CA1048245A - Radial jaws hydraulic crimper - Google Patents
Radial jaws hydraulic crimperInfo
- Publication number
- CA1048245A CA1048245A CA76244183A CA244183A CA1048245A CA 1048245 A CA1048245 A CA 1048245A CA 76244183 A CA76244183 A CA 76244183A CA 244183 A CA244183 A CA 244183A CA 1048245 A CA1048245 A CA 1048245A
- Authority
- CA
- Canada
- Prior art keywords
- outer piston
- inner cylinder
- piston member
- cylinder member
- hydraulic chamber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
- B21D39/04—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes with tubes; of tubes with rods
- B21D39/046—Connecting tubes to tube-like fittings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
- B21D39/04—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes with tubes; of tubes with rods
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P11/00—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for
- B23P11/005—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for by expanding or crimping
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
- Joints That Cut Off Fluids, And Hose Joints (AREA)
- Press Drives And Press Lines (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
Apparatus for crimping a fitting onto a hose or the like, including a ran with a hollow inner cylinder member and with an outer piston member disposed about the inner member, the outer piston member being slideable to move a set of crimping dies together. The inner cylinder member has an outwardly-extending flange sealed to the inside of the outer-extending forward portion sealed to the outside of the inner cylinder member, to form a hydraulic chamber.
Apparatus for crimping a fitting onto a hose or the like, including a ran with a hollow inner cylinder member and with an outer piston member disposed about the inner member, the outer piston member being slideable to move a set of crimping dies together. The inner cylinder member has an outwardly-extending flange sealed to the inside of the outer-extending forward portion sealed to the outside of the inner cylinder member, to form a hydraulic chamber.
Description
~L~39~Z~S
This invention relates to crimping apparatus~
Crimping mach~nes can ~e used to crimp hose fittings onto hoses, tv crimp electrical fittings onto cahles, or to press elongated pieces of material into a desired shape. Such a machine typically includes several crimping dies at a forward end of ~he machine that can be forced together by a piston of a ram.
In accordance with one embodiment of the present inventlon there is provided a cr;mping machine comprising: an inner c~linder memb~r having forward and rearward ends and having a central passagewa~; die means movably mounted at the front portion of said inner cylinder member to close and open;
an outer piston member disposed about said inner cylinder member and movable forwardl~ and rearwardly wlth respect to said inner cylinder me~ber, said outer piston member having a forward portion coupled to said die means to force said die means toward a closed con~figuration when said outer piston member moves in a for~ard direction; said inner c~linder mem~er having an out~
wardly-extending flange sealed to the inside of said outer piston member, and said outer piston member ha~ing an inwardly-extending forward portion sealed to the outside of said inner cylinder member forward of said flange, to form a hydraulic chamber; and means for coupling hydraulic fluid to said hydraulic ; 20 chamber to pressurize said hydraulic cham~er and move said outer piston member forwardly.
For the purpose of illustration, but not of l~itation, two embod ments of the invention are hereinafter described ~it~ reference to the following drawings, in which:
Figure 1 is a front elevation view of a crimping machine construct-ed in accordance with one embodiment of the invention;
Figure 2 is a side view, taken on the line 2~2 o Figure l;
Figure 3 is a rear elevation view of the machine of Figure 2;
Figure 4 is a partial sectional side elevat~on view of a crimping 30 machine constructed ~n accordance ~Ith another embodi~ent of the invention, and Figure 5 is a front elevation ~ie~ of tfiQ cri~pi~ng machine of -~~ ~
1~)4L~Z~
Figure ~I.
Figures 1J 2, and 3, illustrate a crimping machine 98 which has a hydraulic ram 100. The ram includes inner and outer cylindr~cal me~bers 104 and 106 respectively that :~orm a pair of annular cham~er 108, 110 for receiving hydraulic fluid. The inner member 104 is fixed to a support 112 which can lie on a table, while the outer member 106 moves longitudinally ~ ~ ' ~, . , .
.:
~ - la -~ 8~S
r along the inner member. Thus, the inner member 104 serves as a hydraulic cylinder while the outer member 106 serves as a hydraulic piston. The or-ward end 114 of the outer ram member or piston 106 has a tapered inner cam-ming surface 116 which can engage a set oE six dies 118 at the forward end of the machine to move them together, or in other words, ko close the dies.
~en the piston 106 moves rean~ardly, the lower dies fall of their own weight, while the upper dies can be easily pressed up.
The ram is energized by hydraulic fluid passing through a pair of flexible hoses 120, 122 which are connected to the piston 106~ When the pis~on must move fo~ardl fluid is passed through hose 120 into chamber 108 ~; while fluid in chamber 110 is emptied through hose 122. The reverse occurs when the piston is to be moved rean~ardly. A conventional valve, hydraulic pump, and reservoir assembly 124 is connected to the hoses to control fluid r flow.
~ The cylinder 104 has an outwardly-extending flange 126 at a middle f~ portion thereof which forms a wall of each of the two chambers 108, 110.
The piston 106 includes an inward~extending portion a* the front 114 which is sealed to the cylinder, and a sealing ring 128 at the rear which is slide-~ able and which is sealed to the cylinder. The ring 128 is formed as a i 20 separate member to facilitate assembly of the machine, and is retained against rearward movement by a snap-retainer 130 while being moved rearwardly against jr the snap-retainer by oil pressure. I'he piston is prevented from rotating ¦~ by a roll pin 132 which slides along a groove in a base plate 134 of the support 112. The rear end of the cylinder 104 is captured in a rear end plate 136 of the support 112. When the piston moves to its extreme rearward position, the lower dies 118 can fall until they rest on a surface 134s of , the base plate. All of the dies have a retainer pin 138 to prevent the upper ~
dies from falling too far down. In one machine that has been constructed, the ~`
~`- inside diameter of the passage~ay 144 is 4.0 inch.
Both the inner and outer cylindrical members 104, 106 of the ram, ' .
This invention relates to crimping apparatus~
Crimping mach~nes can ~e used to crimp hose fittings onto hoses, tv crimp electrical fittings onto cahles, or to press elongated pieces of material into a desired shape. Such a machine typically includes several crimping dies at a forward end of ~he machine that can be forced together by a piston of a ram.
In accordance with one embodiment of the present inventlon there is provided a cr;mping machine comprising: an inner c~linder memb~r having forward and rearward ends and having a central passagewa~; die means movably mounted at the front portion of said inner cylinder member to close and open;
an outer piston member disposed about said inner cylinder member and movable forwardl~ and rearwardly wlth respect to said inner cylinder me~ber, said outer piston member having a forward portion coupled to said die means to force said die means toward a closed con~figuration when said outer piston member moves in a for~ard direction; said inner c~linder mem~er having an out~
wardly-extending flange sealed to the inside of said outer piston member, and said outer piston member ha~ing an inwardly-extending forward portion sealed to the outside of said inner cylinder member forward of said flange, to form a hydraulic chamber; and means for coupling hydraulic fluid to said hydraulic ; 20 chamber to pressurize said hydraulic cham~er and move said outer piston member forwardly.
For the purpose of illustration, but not of l~itation, two embod ments of the invention are hereinafter described ~it~ reference to the following drawings, in which:
Figure 1 is a front elevation view of a crimping machine construct-ed in accordance with one embodiment of the invention;
Figure 2 is a side view, taken on the line 2~2 o Figure l;
Figure 3 is a rear elevation view of the machine of Figure 2;
Figure 4 is a partial sectional side elevat~on view of a crimping 30 machine constructed ~n accordance ~Ith another embodi~ent of the invention, and Figure 5 is a front elevation ~ie~ of tfiQ cri~pi~ng machine of -~~ ~
1~)4L~Z~
Figure ~I.
Figures 1J 2, and 3, illustrate a crimping machine 98 which has a hydraulic ram 100. The ram includes inner and outer cylindr~cal me~bers 104 and 106 respectively that :~orm a pair of annular cham~er 108, 110 for receiving hydraulic fluid. The inner member 104 is fixed to a support 112 which can lie on a table, while the outer member 106 moves longitudinally ~ ~ ' ~, . , .
.:
~ - la -~ 8~S
r along the inner member. Thus, the inner member 104 serves as a hydraulic cylinder while the outer member 106 serves as a hydraulic piston. The or-ward end 114 of the outer ram member or piston 106 has a tapered inner cam-ming surface 116 which can engage a set oE six dies 118 at the forward end of the machine to move them together, or in other words, ko close the dies.
~en the piston 106 moves rean~ardly, the lower dies fall of their own weight, while the upper dies can be easily pressed up.
The ram is energized by hydraulic fluid passing through a pair of flexible hoses 120, 122 which are connected to the piston 106~ When the pis~on must move fo~ardl fluid is passed through hose 120 into chamber 108 ~; while fluid in chamber 110 is emptied through hose 122. The reverse occurs when the piston is to be moved rean~ardly. A conventional valve, hydraulic pump, and reservoir assembly 124 is connected to the hoses to control fluid r flow.
~ The cylinder 104 has an outwardly-extending flange 126 at a middle f~ portion thereof which forms a wall of each of the two chambers 108, 110.
The piston 106 includes an inward~extending portion a* the front 114 which is sealed to the cylinder, and a sealing ring 128 at the rear which is slide-~ able and which is sealed to the cylinder. The ring 128 is formed as a i 20 separate member to facilitate assembly of the machine, and is retained against rearward movement by a snap-retainer 130 while being moved rearwardly against jr the snap-retainer by oil pressure. I'he piston is prevented from rotating ¦~ by a roll pin 132 which slides along a groove in a base plate 134 of the support 112. The rear end of the cylinder 104 is captured in a rear end plate 136 of the support 112. When the piston moves to its extreme rearward position, the lower dies 118 can fall until they rest on a surface 134s of , the base plate. All of the dies have a retainer pin 138 to prevent the upper ~
dies from falling too far down. In one machine that has been constructed, the ~`
~`- inside diameter of the passage~ay 144 is 4.0 inch.
Both the inner and outer cylindrical members 104, 106 of the ram, ' .
-2-"` :
32~i as well as the rest of the machine, is formed to permit an elongated member to project rearwardly through the en~ire machine. To this purpose, the entire machine apparatus is devoid of obstruction along the horizontal centerline 140 of the dies. It would be possible to locate a bar or other obstruction, such as that indicated in phantom lines at 142, along the centerline 140, while still permitting a flexible hose or cable or project through the rear of the machine up to the dies 118. However, if such an obstruction were present, then it would be necessary for the passageway 144 to be unobstructed along the centerline 140 for a length L and a width W
which are both great enough to permit projection of a hose, cable, or other flexible elongated member through the rear of the machine up to the dies 118 without requiring a sharp bend in the elongated member. Typically, a flexible hose or cable may be bent to a radius R, as indicated for one of the hydraulic hoses 122, of about five times the hose diameter d, and still can be slid into the machine; however, it becomes progressively more difficult to slide ~ the hose or cable into or out of a machine, if the hose or cable must be -~ bent at a smaller radius of curvature. Accordingly, the machine is devoid, or clear, of any obstructions immediately behind the dies that would prevent the insertion of an elongated member in a substantially straight configuration, that is, at a configuration where the member is straight or bent at a radius of curvature greater than five times the dïameter of the elongated member. ;~ '~
Normally, a hose or cable on which a fitting is to be crimped, has a diameter . :
H (Figure 1) only slightly smaller than the opening in the fully closed dies, ~ so that it would undergo even less bending than a hose of a diameter equal to -; the opening in the fully closed dies.
.~ .
Figures 4 and 5 illustrate still another crimping machine 150 which ~;
utilizes a coil spring 152 for returning a piston or movable outer member 156 rearwardly, and wherein the piston 156 surrounds the stationary inner member 158. The spring 152 is disposed about the inner member 158 rearwardly of a ; 30 flange 162 thereof, and has a rear spring end coupled to the outer member 156 , ~ ':
:
~3~ ~ ~
2~5 through a sliding ring 164. The machine i5 otherwise largely similar to the machine 98 of Figure 2, with the rear end of the inner member 158 mounted on a support 166~ and with the front of the piston having a camming surface which can move a set of dies 168 together.
Thus, the invention provides a crimping machine which facilitates the crimping of a itting onto a member or the deformation of a member. The device is useful not only to crimp a fitting onto a hose, but also to crimp an electrical fitting onto a cable or other member, or to merely deform a member. The machine is compact and yet has a large capacityJ by utilizing a slideable piston member~ such as 106 in Figure 2 or 156 in Figure 4, which surrounds a stationary inner member such as 104 in Figure 2 or 158 in Figure 4.
.
i`, :
,.'' :
' ,' ' ..
:
.
32~i as well as the rest of the machine, is formed to permit an elongated member to project rearwardly through the en~ire machine. To this purpose, the entire machine apparatus is devoid of obstruction along the horizontal centerline 140 of the dies. It would be possible to locate a bar or other obstruction, such as that indicated in phantom lines at 142, along the centerline 140, while still permitting a flexible hose or cable or project through the rear of the machine up to the dies 118. However, if such an obstruction were present, then it would be necessary for the passageway 144 to be unobstructed along the centerline 140 for a length L and a width W
which are both great enough to permit projection of a hose, cable, or other flexible elongated member through the rear of the machine up to the dies 118 without requiring a sharp bend in the elongated member. Typically, a flexible hose or cable may be bent to a radius R, as indicated for one of the hydraulic hoses 122, of about five times the hose diameter d, and still can be slid into the machine; however, it becomes progressively more difficult to slide ~ the hose or cable into or out of a machine, if the hose or cable must be -~ bent at a smaller radius of curvature. Accordingly, the machine is devoid, or clear, of any obstructions immediately behind the dies that would prevent the insertion of an elongated member in a substantially straight configuration, that is, at a configuration where the member is straight or bent at a radius of curvature greater than five times the dïameter of the elongated member. ;~ '~
Normally, a hose or cable on which a fitting is to be crimped, has a diameter . :
H (Figure 1) only slightly smaller than the opening in the fully closed dies, ~ so that it would undergo even less bending than a hose of a diameter equal to -; the opening in the fully closed dies.
.~ .
Figures 4 and 5 illustrate still another crimping machine 150 which ~;
utilizes a coil spring 152 for returning a piston or movable outer member 156 rearwardly, and wherein the piston 156 surrounds the stationary inner member 158. The spring 152 is disposed about the inner member 158 rearwardly of a ; 30 flange 162 thereof, and has a rear spring end coupled to the outer member 156 , ~ ':
:
~3~ ~ ~
2~5 through a sliding ring 164. The machine i5 otherwise largely similar to the machine 98 of Figure 2, with the rear end of the inner member 158 mounted on a support 166~ and with the front of the piston having a camming surface which can move a set of dies 168 together.
Thus, the invention provides a crimping machine which facilitates the crimping of a itting onto a member or the deformation of a member. The device is useful not only to crimp a fitting onto a hose, but also to crimp an electrical fitting onto a cable or other member, or to merely deform a member. The machine is compact and yet has a large capacityJ by utilizing a slideable piston member~ such as 106 in Figure 2 or 156 in Figure 4, which surrounds a stationary inner member such as 104 in Figure 2 or 158 in Figure 4.
.
i`, :
,.'' :
' ,' ' ..
:
.
Claims (3)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A crimping machine comprising: an inner cylinder member having forward and rearward ends and having a central passageway; die means movably mounted at the front portion of said inner cylinder member to close and open;
an outer piston member disposed about said inner cylinder member and movable forwardly and rearwardly with respect to said inner cylinder member, said outer piston member having a forward portion coupled to said die means to force said die means toward a closed configuration when said outer piston member moves in a forward direction; said inner cylinder member having an out-wardly-extending flange sealed to the inside of said outer piston member, and said outer piston member having an inwardly-extending forward portion sealed to the outside of said inner cylinder member forward of said flange, to form a hydraulic chamber; and means for coupling hydraulic fluid to said hydraulic chamber to pressurize said hydraulic chamber and move said outer piston member forwardly.
an outer piston member disposed about said inner cylinder member and movable forwardly and rearwardly with respect to said inner cylinder member, said outer piston member having a forward portion coupled to said die means to force said die means toward a closed configuration when said outer piston member moves in a forward direction; said inner cylinder member having an out-wardly-extending flange sealed to the inside of said outer piston member, and said outer piston member having an inwardly-extending forward portion sealed to the outside of said inner cylinder member forward of said flange, to form a hydraulic chamber; and means for coupling hydraulic fluid to said hydraulic chamber to pressurize said hydraulic chamber and move said outer piston member forwardly.
2. The crimping machine described in Claim 1 including: a ring disposed around said inner cylinder member rearwardly of said flange, said ring sealed to the outer surface of said inner cylinder member and the inner surface of said outer piston member, to form a rearward hydraulic chamber;
means for coupling said ring to said outer piston member to allow said ring to apply rearward force to said outer piston member; and means for coupling hydraulic fluid to said rearward hydraulic chamber, to pressure said rearward hydraulic chamber and move said ring and outer piston member rearwardly.
means for coupling said ring to said outer piston member to allow said ring to apply rearward force to said outer piston member; and means for coupling hydraulic fluid to said rearward hydraulic chamber, to pressure said rearward hydraulic chamber and move said ring and outer piston member rearwardly.
3. The crimping machine described in Claim 1 including: a coil spring disposed about said inner cylinder member behind said flange thereof, said spring having a rearward end coupled to said outer piston member to urge it rearwardly.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/544,185 US3977065A (en) | 1973-03-01 | 1975-01-27 | Crimping machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1048245A true CA1048245A (en) | 1979-02-13 |
Family
ID=24171107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA76244183A Expired CA1048245A (en) | 1975-01-27 | 1976-01-26 | Radial jaws hydraulic crimper |
Country Status (7)
| Country | Link |
|---|---|
| JP (1) | JPS51102269A (en) |
| CA (1) | CA1048245A (en) |
| DE (1) | DE2602781A1 (en) |
| FR (1) | FR2298384A1 (en) |
| GB (1) | GB1528494A (en) |
| IT (1) | IT1050776B (en) |
| SE (1) | SE7513288L (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT376589B (en) * | 1982-02-04 | 1984-12-10 | Karl Sauder | DEVICE FOR COMPRESSING TUBULAR PARTS |
| DE3512241A1 (en) * | 1985-04-03 | 1986-10-16 | Peter Dipl Ing Schroeck | RADIAL PRESS |
| DE10149924A1 (en) * | 2001-10-10 | 2003-04-30 | Uniflex Hydraulik Gmbh | radial press |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4519507Y1 (en) * | 1966-03-18 | 1970-08-07 |
-
1975
- 1975-11-26 SE SE7513288A patent/SE7513288L/en unknown
- 1975-12-09 GB GB50438/75A patent/GB1528494A/en not_active Expired
- 1975-12-15 IT IT30295/75A patent/IT1050776B/en active
-
1976
- 1976-01-23 JP JP51006049A patent/JPS51102269A/ja active Pending
- 1976-01-26 DE DE19762602781 patent/DE2602781A1/en active Pending
- 1976-01-26 CA CA76244183A patent/CA1048245A/en not_active Expired
- 1976-01-27 FR FR7602140A patent/FR2298384A1/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| SE7513288L (en) | 1976-07-28 |
| JPS51102269A (en) | 1976-09-09 |
| GB1528494A (en) | 1978-10-11 |
| DE2602781A1 (en) | 1976-07-29 |
| FR2298384A1 (en) | 1976-08-20 |
| IT1050776B (en) | 1981-03-20 |
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