CA1240129A

CA1240129A - Socketing machine hose pull

Info

Publication number: CA1240129A
Application number: CA000461357A
Authority: CA
Inventors: James A. Verplanck
Original assignee: Aeroquip Corp
Current assignee: Eaton Aeroquip LLC
Priority date: 1983-08-24
Filing date: 1984-08-20
Publication date: 1988-08-09
Also published as: US4535521A; JPS6069391A; BR8404175A; JPH0126812B2

Abstract

ABSTRACT OF THE DISCLOSURE

A machine for assembling flexible hose to hose end fittings utilizing a socket. In such machines the socket is chucked and rotated and the hose end is inserted into the socket for engagement by the internal spiraled socket serrations. In the inventory, manually operated force multiplying means in the form of a winch forces the hose clamp and hose, toward the socket, and by means of a reversing bar the winch may be used to disassemble the hose and socket by reversing the direction of axial force on the hose.

Description

1. Detachable or reusable fittings for flexible hose

2. have the advantage of permitting hose assemblies of

3. various lengths to be readily produced with a minimum

4. inventory of parts. IIose wound upon a spool merely need

5. to be cut to the desired length and a fitting assembled

6. to each hose end to complete the assembly. Such fittings

7. commonly employ a nipple received within the hose bore

8. and a socket threaded upon the nipple engages the exterior

9. surface of the hose end in radial spaced alignment with

10. the nipple. In this manner the hose end is firmly gripped

11. between the nipple and the socket establishing a fluid

12. tight relationship between the hose and fitting, and

13. threads, nuts or other connection structure mounted upon

14. the nipple permits the fitting to be connected to the other

15. components of the system.

16. With hose fittings of this type, the socket usually

17. includes internal serrations for increasing the frictional

18. engagement of the socket with the hose cover, and such ser-

19. rations are typically of a spiral or thread configuration

20. permitting the socket to be "threaded" upon the hose end.

21. Usually, the spiraled or helical socket serrations are of

22. a rounded configuration to prevent cutting or tearing of

23. the hose cover.

24. When assembling fittings and hose of large diameter,

25. i.e. hose having an OD of 2 inches or greater, considerable

26. torque is requi~ed to thread the socket upon the hose, and

27. commonly, the hose must be firmly clamped and a wrench is

28. applied to the socket to produce the necessary torque.

29. Where a significant number of hose assemblies are as-

30. sembled, such as in the plant of an industrial equipment 1. manufacturer, or a hose distributor, it is common to 2. employ powered machines for assembling the fittings upon 3. flexible hose, and in such machines the hose is clamped 4. against rotation while the socket is chucked and rotated 5. by an eleckric motor. As the socket is rotated the hose 6. is manually pushed into the rotating socket to produce 7. the assembly. Such hose assembly machines are sold by 8. the assignee identified as Model i~os. FT1013 and FT1097.
9. In the operation of the aforedescribed assembly ma-lQ. chines the axial movement of the hose relative to the soc-11. ket is produced manually, and considerable axial force on 12. the hose is often required, especially with the larger 13. sizes of hose and sockets, but, heretofore, power or 14. force multiplying means were not available for axially 15. translating the hose and considerable effort was required 16. by the operator when assembling or disassembling hose and 17. fittings.
18. It is an object of the invention to provide a hose 19. assembly machine wherein manually operated force multi-20. plying hose feeding means are utilized to feed the hose 21. into a rotating socket, or retract the hose therefrom, and 22. thereby substantially reduce the effort required for hose 23. assembly or disassembly.
24. An additional object of the invention is to provide 25. a manual hose feeding or disassembly means for US2 with 26. existing powered hose assembly machines wherein the appara-27. t~s of the invention may be retroactively fitted to existing 28. hose assembly machines with a minimum of modification thereto.
29. Yet another object of the invention is to provide 30. manual means for feeding and retracting hose relative to a ~24q~1~9 1. fitting socket when the apparatus is economical to produce 2. and use, and may be readily utilized by operators of 3. ordinary skill.
4. In the practice of the invention, the hose assembly 5. machine commonly consists of a powered chuck mounted upon 6. a chuck frame and a reversible electric motor selectively 7. rotating the chuck and clamped socket in either direction 8. of rotation. Guide means parallel to the axis of chuck ro-9. tation support a hose clamp wherein the clamp, and clamped 10. hose, is movable in a direction parallel to the axis of 11. socket rotation, and the hose end is maintained coaxial 12. with the socket. Such apparatus is known, as described 13. above, and during socket rotation manual axial displacement 14. of the hose clamp and hose toward the socket permits the 15. hose to enter the socket and be threaded therein upon the 16. socket serrations.
17. In the practice of the invention, a shaft is rotatably 18. mounted upon the apparatus frame upon bearings, and hexa-19. gonal drive heads mounted upon the ends of the reel shaft 20. permit the shaft to be rotated by means of a conventional 21. ratchet wrench. A nylon web or strap is affixed at one 22, end to the reel shaft, and the other end of the reel shaft 23. is attached to the hose clamp. As the reel shaft is loca-24. ted on the frame in the direction of the chuck relative 25. to the location of the hose clamp, rotation of the reel 26. shaft by the ratchet wrench winds the strap upon the shaft, 27. pulling the hose clamp toward the chuck, and in this manner 28. the hose clamp, and hose, are "winched" toward the rotating 29. socket for hose assembly purposes.
30. ~hen using the invention to disassemble hose from a 1. socket, a reversing bar is mounted upon the ends of the 2. hose clamp guides and the strap passes around the outer 3. portion of the reversing bar prior to being affixed to 4. the hose clamp. As the location of the xeversing bar 5. locates the bar at a greater distance from the chuck 6. than the hose clamp, tensioning of the strap will dis-7. place the hose clamp, and hose, away from the chuck and 8. the socket producing the necessary axial force on the hose 9. to permit disassembly of the hose and socket.
10. The apparatus of the invention is of a relatively 11. simple configuration, readily manufacturable and saleable 12. at moderate expense, yet the invention permits high axial 13. forces to be readily mechanically imposed upon the hose 14. within a hose assembly machine substantially reducing the 15. manual effort required for hose assembly and disassembly 16. purposes.
17. The aforementioned objects and advantages of the 18. invention will be appreciated from the following descrip-19. tion and accompanying drawings wherein:
20. Fig. 1 is a perspective view of a hose assembly 21. machine in accord with the invention illustrating the 22. hose clamp at its outer location, the reversing bar being 23. shown in exploded relationship to the hose clamp guides, 24. and the strap attached to the hose clamp in the assembly 25. mode, 26. Fig. 2 is a perspective view`of the apparatus of the 27. invention illustrating the reversing bar in place and the 28. strap attached to the hose clamp in the hose disassembly 29. mode, and 30. Fig. 3 is an enlarged, detail, perspective view of 12~0~

1. the reel shaft, reversing bar and associated components.
2. The present invention pertains to the apparatus for 3. manually mechanically feeding and retracting the hose 4. clamp on a hose assembly machine relative to the chuck, 5. by force multiplying means and in the drawings, use of 6. the appara~us with known hose assembly machine is illus-7. trated. Such a hose assembly machine includes a frame 10 8. supported upon tripod legs 12, and a power head 14 is 9. mounted upon the frame upon a pair of metal straps 16, 10. each having a front end region 18. The power head 14 in-11. cludes an electric motor within the head, not shown, 12. operably connected to the rotatable head plate 20, wherein 13. the head plate can be rotated in either direction by con-14. ventional bi-airectional switches, which may include a 15. foot operated switch, as is known. Head plate includes 16. a chuck 22 attached to the head plate by extensions 24, 17. and the chuck includes radially movable jaws 26 for firmly 18. gripping a hose fitting socket 28.
19. The power head 14 supports a pair of parallel cylin-20. drical guides 30 which are parallel to the axis of rota-21. tion of the chuck 22 and terminate at their outer ends, 22. which are provided with a bore 32. A hose clamp 34 is 23. slidably mounted upon the guides 30 for movement toward 24. and away from the chuck 22, and the hose clamp includes 25. jaws 36 adjustable by means of a screw and wheel 38. The 26. hose clamp jaws 36 include a V-shaped notch for holding 27. the hose 40 wherein the hose end will be in axial alignment 28. with the socket 28, as shown in Figs. 1 and 2.
29. I~ose assembly apparatus of the aforedescribed type 30. is used by chucking the socket 28 within the chuck jaws 26, 1. and clamping the hose 40 within the hose clamp 34 by 2. tightening of the screw wheel 38. The chuck 22 and socket 3. is rotated in the desired direction by energizing the motor 4. driving the chuck, and the operator manually pushes upon 5. the hose clamp 34, forcing the hose toward the socket 6. wherein the hose end enters the socket, engages the spiral 7. serrations and continuing axial pressure is maintained upon 8. the hose and hose clamp until the hose has fully entered 9. the socket and "bottoms out". At such time the rotation 10. of the socket is terminated and the assembly of socket and 11. and hose is completed. Disassembly of the hose from the 12. socket is accomplished by reversing the above sequence, and 13. a "pull" is applied to the hose and hose clamp by the opera-14. tor to aid in the unthreading of the hose from the socket.
15. With larger sizes of hose, the aforementioned assembly 16. procedure requires extensive effort by the operator as 17. the entering of the hose into the socket is often difficult 18. to achieve and the frictional engagement between the spiral 19. serrations of the socket and hose is not sufficient to 20. "draw" the hose into the socket.
21. In the practice of the invention a reel shaft 42 is 22. rotatably mounted upon the front ends of the power head 23. mounting straps 16, as apparent from the drawing. This 24. mounting is achieved by utilizing brackets 44 each having 25. a bearing 46 which rotatably supports the shaft 42. The 26. brackets 44, being of a "U" configuration, are provided 27. with aligned holes wherein bolts 48 may be inserted 28. through holes in the brackets and the straps to firmly 29. mount the reel shaft to the straps at a location substan-30. tially below the chuck 22.

1. The ends of the reel shaft 42 are each provided with 2. a hexagonal head 50 which forms a drive head which may be 3. received wi.thin the socket of a conventional socket ratchet 4. wrench 52, Fig. 3, wherein the shaft may be readily rotated 5. with a high torque by the ratchet wrench.
6. A nylon web or strap 54 includes an end 56 which is 7. wound upon the reel shaft 42 and to assure winding of the 8. strap upon the shaft, a screw, not shown, extends through 9. the strap end and is threaded into the shaft. Thus, rota-10. tion of the reel shaft will cause the strap 54 to wind 11. upon the shaft in a winch type of relationship as apparent 12. in Fig. 3.
13. The outer end 58 of the strap 54 includes a loop 60 14. formed by D ring 62 permitting the outer end of the strap 15. to be attached to the hose clamp 34 as apparent in Fig. 3.
16. Of course, the looped outer end of the strap will be at-17. tached to the hose clamp prior to the outer end of the 18. strap being affi.xed to the reel shaft 42.
19. As the reel shaft 42 is located in the direction of 20. the chuck 22 relative to the normal position of the hose 21. clamp 34, it will be appreciated that winding of the 22. strap 54 upon the shaft by the wrench 52 will draw the 23~ hose clamp, and clamped hose 40, toward the chuck and 24. chucked socket 28. Thus, during assembly of a hose and 25. socket, the operator will oscillate the ratchet wrench 52 26. to produce the necessary torque upon the reel shaft to 27. pull the hose clamp 34 and hose in the direction of the 28. chuck and socket to permit the assembly operation to 29. take place with a minimum effort on the part of the operator.
30. If it is desired to use the reel shaft 42 to disassemble 1. a hose 40 from a fitting socket 28, the U-shaped reversing 2. bar 64 is utilized. The reversing bar includes a base 66 3. and legs 68, and the legs 68 are readily received within the 4. bores 32 defined in the ends of the guides 30. Thus, by 5. unwinding the reel shaft to permit sufficient slack in the 6. strap 54, the reversing bar may be slipped "inside" the strap 7. and the legs 68 inserted into the guide end bores as shown in 8. Fig. 3. In this relationship the strap will be "outside" of 9. the reserving bar, and the tensioning of the strap will pull 10. the hose clamp 34 away from the chuck and chucked socket per-11. mitting high axial forces to be applied to the hose 40 for dis-12. assembly purposes.
13. Of course, when using the apparatus as aforedescribed, 14. it is necessary that the chuck motor rotate the chuck in that 15. direction commensurate with the operation underway and the 16. operator, will, at all times, maintain close control of the 17. operation of the power head motor.
18. It will be appreciated that the reel shaft 42 and asso-19. ciated components are of a readily manufacturable form and 20. configuration, and may be produced at a reasonable cost. The 21. ease with which the apparatus may be assembled to existing 22. hose assembly machines permits the apparatus to be retrofitted 23. to existing hose assembly machines with little modifications.
24. It is to be appreciated that for the apparatus to function 25. as described, the reel shaft must be located closer to the 26. chuck 22 than the normal position of the hose clamp wherein 27. tensioning of the strap will permit sufficient axial displace-28. ment of the hose cla,np to achieve the desired purpoce. Of 29. course, the reel shaft may be attache~i to the assembly machine 30. apparatus at a location different than that illustrated and ~:4~9 1. described, as lony as tensioning of the strap will draw 2. the hose clamp toward the chuck, and it is understood 3. that other modifications to the inventive concepts may 4. be apparent to thcse skilled in the art without departiny 5. from the spirit and scope of the invention.

9.

Claims

The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:

1. Apparatus for assembling a hose fitting socket having an internally spirally, serrated recess, having an axis to the end of a flexible hose, wherein the apparatus includes a frame rotatably supporting a socket holding chuck having an axis whereby the socket may be rotated about its axis, power drive means drvingly connected to the chuck, a hose clamp adapted to clamp a flexible hose, guide means mounting the hose clamp upon the frame in sub-stantial alignment with the chuck axis for reciprocal move-ment toward and away from the chuck, the improvement com-prising, manually operated force multiplying hose clamp translating means mounted upon the frame operatively con-nected to the hose clamp for selectively translating the hose clamp upon the guide means toward and away from the chuck to aid in assembling and disassembling of a chucked socket and a hose held within the hose clamp, said man-ually operated hose clamp translating means comprising a winch defined by a shaft rotatably mounted upon the frame below the chuck at a location closer to the chuck than the hose clamp having a length substantially per-pendicular to the chuck axis and an accessible end, a flexible strand wound upon said shaft having an outer end attached to the hose clamp, and manual shaft rotating means defined on said shaft end

2. In an apparatus for assembling a hose fitting as in claim 1, said manual shaft rotating means comprising a wrench engaging hub fixed upon said shaft end, said strand comprising a web adapted to be wound upon said shaft.

3. Apparatus for assembling a hose fitting socket having an internally spirally, serrated recess, having an axis to the end of a flexible hose, wherein the apparatus includes a frame rotatably supporting a socket holding chuck having an axis whereby the socket may be rotated about its axis, power drive means drivingly connected to the chuck, a hose clamp adapted to clamp a flexible hose, guide means mounting the hose clamp upon the frame in sub-stantial alignment with the chuck axis for reciprocal move-ment toward and away from the chuck, the improvement com-prising, manually operated force multiplying hose clamp translating means mounted upon the frame operatively con-nected to the hose clamp for selectively translating the hose clamp upon the guide means toward and away from the chuck to aid in assembling and disassembling of a chucked socket and a hose held within the hose clamp, said manually operated hose clamp translating means comprising a winch rotatably mounted upon the frame at a location closer to the chuck than the hose clamp, a flexible strand wound upon said winch having an outer end attached to the hose clamp, manually operating means connected to said winch, the guide means including a pair of substantially parallel guides, each having an end located a greater distance from the chuck than the hose clamp and each end having an axial bore defined therein, said hose clamp translating means in-cluding a U-shaped reversing bar having a base and parallel legs extending from said base in a common direction, said legs being received within the guide's bores whereby said base bridges the guides adjacent said ends thereof and pass-ing of said strand about said bar base permits said winch to translate the hose clamp away from the chuck.