A large diameter cable terminal crimping device and crimping method

Abstract

The present invention provides a large-diameter cable terminal crimping device and crimping method, which belongs to the field of cable connection. It solves the problem that the existing manual crimping clamps are prone to insufficient crimping force, which makes the terminal easy to fall off. Its technical solution is as follows: it includes a support base, the support base has a foot-operated one-way air supply component; the foot-operated one-way air supply component includes a foot-operated drive component, a reset component and a one-way air supply component; the support base has a pressing component, and the pressing component is connected to the one-way air supply component; the pressing component includes a push rod, an air cylinder and a first piston, and the air cylinder has a pressure relief component; the crimping method includes the following contents: the one-way air supply component realizes one-way air supply to the pressing component. The beneficial effects of the present invention are as follows: the foot-operated one-way air supply component of the present invention realizes one-way air supply to the pressing component, realizes that the pressing component generates a large thrust, is conducive to the crimping terminal generating a large crimping force, can avoid the terminal from falling off, has no power supply requirements, and improves practicality.

Description

Technical Field

[0001] The invention belongs to the field of cable connection, and in particular relates to a crimping device and a crimping method for large-diameter cable connection terminals. Background Art

[0002] When connecting large-diameter cables to electrical equipment, the large-diameter cables need to be crimped onto the terminals first. The terminals for crimping large-diameter cables generally use tinned copper noses.

[0003] Electric clamps are generally used to crimp large-diameter cables and terminal blocks outdoors. When power supply is inconvenient, electric clamps cannot perform normal crimping. Manual crimping clamps are prone to insufficient crimping force, making the terminal blocks prone to falling off.

[0004] Based on this, the present invention provides a large-diameter cable terminal crimping device and crimping method to solve the above technical problems. Summary of the Invention

[0005] In order to solve the problem that the existing manual crimping clamps are prone to insufficient crimping force, which makes the terminal easy to fall off, the present invention provides a large-diameter cable terminal crimping device and crimping method.

[0006] The present invention proposes a large-diameter cable terminal crimping device, comprising a support base, the lower end of which is connected to a pedal-type one-way air supply component;

[0007] The pedal-type one-way air supply assembly includes a pedal drive assembly, a reset assembly and a one-way air supply assembly, wherein the one-way air supply assembly is fixedly connected to the reset assembly, the reset assembly is fixedly connected to the pedal drive assembly, and the pedal drive assembly is movably connected to the one-way air supply assembly;

[0008] The top of the support seat is connected to a pressing component, and the pressing component is connected to a one-way air supply component;

[0009] The pressing assembly includes a push rod, an air cylinder and a first piston. The top of the one-way air supply assembly is installed in the air inlet hole of the air cylinder. The first piston is slidably connected in the air cylinder. The side wall of the first piston away from the air inlet hole of the air cylinder is fixedly connected to the push rod. The push rod is slidably connected to the sliding hole opened in the air cylinder.

[0010] A pressure relief component is fixedly connected to the side wall of the air cylinder near the air inlet, and the pressure relief component is used to relieve pressure from the pressing component;

[0011] The side wall of the air cylinder away from the pressure relief assembly is fixedly connected with a lower crescent plate and an upper crescent plate, and the lower crescent plate and the upper crescent plate are arranged opposite to each other, and the outer ends of the lower crescent plate and the upper crescent plate are connected with a locking assembly;

[0012] The lower crescent plate and the upper crescent plate are connected to two identical crimping dies, and the crimping dies are arranged opposite to each other. The crimping die close to the pressing component is in contact with the driving end, and the locking component is plugged into the crimping die away from the pressing component to fix the crimping die away from the pressing component.

[0013] Furthermore, the one-way air supply assembly includes a pressurized chassis, a first one-way valve, an air inlet pipe, an air outlet pipe and a second one-way valve. The air outlet and air inlet holes of the pressurized chassis are fixedly connected with the air outlet pipe and the air inlet pipe respectively. The air inlet pipe is installed with a first one-way valve, the air outlet pipe is installed with a second one-way valve, and the support seat is installed on the top of the pressurized chassis.

[0014] Furthermore, the foot-operated drive assembly includes a straight slide groove, an L-shaped plate, a foot pedal, an oblique frame, a push rod and a second piston. A straight slide groove is provided on the top of the pressurized case, and the straight slide groove is fitted and slidably connected to the upright part of the L-shaped plate. The bottom side wall of the L-shaped plate is fixedly connected to the push rod, and the outer end of the L-shaped plate is fixedly connected to the foot pedal. The outer wall of the second piston is fitted and slidably connected to the inner wall of the pressurized case, and the end face of the second piston away from the air inlet hole of the pressurized case is fixedly connected to an oblique frame used in conjunction with the push rod.

[0015] Furthermore, the reset component is a second elastic member, and both ends of the second elastic member are fixedly connected to the inner end surface away from the air inlet hole of the pressurized chassis and the end surface of the second piston away from the air inlet hole of the pressurized chassis.

[0016] Furthermore, the pressure relief assembly includes a pressure relief cylinder, a transverse hole, a stopper, a threaded column, a rotating block and a pressure relief hole. A transverse hole is provided on the side wall of the air cylinder near its air inlet hole. The air cylinder is fixedly connected to a pressure relief cylinder at the outer end of the transverse hole. A threaded column is threadedly connected to the outer end of the pressure relief cylinder. A rotating block is fixedly connected to the outer end of the threaded column. A stopper is fixedly connected to the inner end of the threaded column and is slidably connected to the inner wall of the pressure relief cylinder. The pressure relief cylinder is provided with a pressure relief hole.

[0017] Furthermore, the crimping mold includes a side plate, a V-shaped groove, a circular plate, a limit slider and a limit slide groove. The inner arc surfaces of the lower crescent plate and the upper crescent plate are provided with a limit slide groove. The limit slide groove is connected to the limit slider in a limit sliding manner. The limit sliders are fixedly connected with a circular plate. The circular plate is fixedly connected with a side plate. The inner wall of the side plate is provided with a V-shaped groove. The two groups of V-shaped grooves cooperate to crimp the terminal into a regular hexagon.

[0018] Furthermore, the locking assembly includes an upper fixed plate, a locking rod, a trapezoidal block, a first elastic member, a straight sliding groove and a transverse groove. The top of the locking rod is fixedly connected to the upper fixed plate, the circular plate, the lower crescent plate and the upper crescent plate are all provided with a straight sliding groove, and the locking rod is slidingly connected to the straight sliding groove. The lower end side wall of the locking rod is provided with a transverse groove, the inner end of the transverse groove is fixedly connected to the first elastic member, and the outer end of the first elastic member is fixedly connected to the trapezoidal block.

[0019] Furthermore, the trapezoidal block is in sliding contact with the inner wall of the transverse groove, and the top of the trapezoidal block is in contact with the bottom of the lower crescent plate.

[0020] In order to better achieve the purpose of the present invention, the present invention also provides a crimping method of a large-diameter cable terminal crimping device, comprising the following steps:

[0021] Step 1: Select a symmetrical crimping die according to the diameter of the large-diameter cable;

[0022] Step 2: The circular plate of the crimping die drives the limiting slider to rotate and slide in the limiting slide groove. The outer side wall of the circular plate at the inner end contacts the end of the push rod of the pressing assembly. The lower crescent plate and the upper crescent plate radially limit the circular plate through the limiting slider and the limiting slide groove. Then the upper fixed plate drives the locking rod to insert into the straight sliding groove. After the upper crescent plate contacts the trapezoidal block, it pushes the trapezoidal block to move into the horizontal groove. When the trapezoidal block moves to the bottom of the lower crescent plate, the first elastic member pushes the trapezoidal block to move outward. The trapezoidal block moves to contact the bottom of the lower crescent plate. The locking assembly fixes the crimping die at the outer end, thereby realizing quick installation of the crimping die.

[0023] Step 3: Connect the terminal block with antioxidant to the cable conductor and move it into the V-groove;

[0024] Step 4: Step on the pedal of the foot-operated one-way air supply assembly, and the foot pedal in the original position moves downward, and the foot pedal drives the L-shaped plate to move downward along the straight slide groove, and the L-shaped plate drives the push rod to move downward, and the push rod drives the second piston to move toward the outlet pipe of the one-way air supply assembly through the oblique frame, and the first one-way valve closes and the second one-way valve opens to push the gas of the pressurized chassis into the outlet pipe, and then release the foot, and the second elastic member of the reset assembly drives the second piston to move away from the outlet pipe, and the first one-way valve opens and the second one-way valve closes, and the external gas enters the pressurized chassis through the intake pipe, and the foot pedal returns to its original position, and then steps on the foot pedal to move downward, and the intake pipe realizes one-way air supply to the pressing assembly;

[0025] Step 5: Gas enters the cylinder of the pressing assembly through the air inlet pipe, and the gas pushes the first piston, which drives the push rod to move, and the push rod drives the inner circular plate to move, and the inner circular plate drives the side plate to move. When the two side plates are in contact, the two V-shaped grooves cooperate to crimp the terminal with antioxidant to the cable conductor, thus achieving one-time crimping of large-diameter cable terminals;

[0026] Step 6: Rotate the rotating block of the pressure relief assembly, which drives the threaded column to rotate, and the threaded column drives the stopper to move to the outside of the pressure relief hole. The gas in the cylinder is discharged from the cylinder transverse hole and the pressure relief hole, realizing rapid pressure relief of the cylinder. After the pressure is relieved, rotate the rotating block of the pressure relief assembly, which drives the threaded column to rotate, and the threaded column drives the stopper to move to the inside of the pressure relief hole;

[0027] Step 7: Push the push rod toward the pressure relief assembly, push the inner crimping die to move, and then move the part to be crimped between the V-grooves;

[0028] Step 8. Repeat steps 4 to 7. Large diameter cable terminals can be crimped continuously to achieve large diameter cable terminal crimping.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] 1. The lower crescent plate and the upper crescent plate of the present invention radially limit the crimping die through the crimping die, and then the locking assembly fixes the crimping die at the outer end, thereby realizing rapid installation of the crimping die. At the same time, it is convenient to assemble the corresponding crimping die according to the cable diameter, thereby improving adaptability.

[0031] 2. The foot-operated one-way air supply assembly of the present invention realizes one-way air supply to the pressing assembly, so that the pressing assembly generates a large thrust, which is beneficial for the crimping terminal to generate a large crimping force, can avoid the terminal from falling off, has no power supply requirements, and improves practicality.

[0032] 3. The present invention adjusts the pressure relief component to achieve rapid pressure relief of the air cylinder. After the air cylinder is depressurized, it provides space for the push rod to move, making it easy to adjust the position of the crimping die at the inner end. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0034] Figure 1 The structural three-dimensional structure of the present invention Figure 1 .

[0035] Figure 2 It is a structural front view of the present invention.

[0036] Figure 3It is the structural left view of the present invention.

[0037] Figure 4 The structural three-dimensional structure of the present invention Figure 2 .

[0038] Figure 5 For the present invention Figure 3 AA direction section Figure 1 .

[0039] Figure 6 For the present invention Figure 3 AA direction section Figure 2 .

[0040] Figure 7 for Figure 5 A magnified view of the structure at point B.

[0041] Figure 8 for Figure 6 Enlarged view of the structure at point C.

[0042] Wherein, the accompanying drawings are marked as follows:

[0043] 1. Pressurized chassis; 2. Straight slide; 3. L-shaped plate; 4. Foot pedal; 5. Lower crescent plate; 6. Pressing die; 61. Side plate; 62. V-shaped groove; 63. Circular plate; 64. Limiting slider; 65. Limiting slide; 7. Locking assembly; 71. Upper fixed plate; 72. Locking rod; 73. Trapezoidal block; 74. First elastic member; 75. Straight slide; 76. Horizontal groove; 8. Upper crescent plate; 9. Push rod ;10. Air cylinder;11. Pressure relief assembly;111. Pressure relief cylinder;112. Horizontal hole;113. Stop block;114. Threaded column;115. Rotating block;116. Pressure relief hole;12. First one-way valve;13. Air inlet pipe;14. Air outlet pipe;15. Second one-way valve;16. Support seat;17. First piston;18. Second elastic member;19. Oblique frame;20. Push rod;21. Second piston. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the following examples further illustrate the present invention in detail. Of course, the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0045] Example 1

[0046] See also Figures 1 to 8 As shown, a large diameter cable terminal crimping device includes a support base 16, the lower end of the support base 16 is connected to a foot-operated one-way air supply assembly;

[0047] The pedal-type one-way air supply assembly includes a pedal drive assembly, a reset assembly and a one-way air supply assembly, wherein the one-way air supply assembly is fixedly connected to the reset assembly, the reset assembly is fixedly connected to the pedal drive assembly, and the pedal drive assembly is movably connected to the one-way air supply assembly;

[0048] The one-way air supply assembly includes a pressurized chassis 1, a first one-way valve 12, an air inlet pipe 13, an air outlet pipe 14, and a second one-way valve 15. The air outlet and air inlet of the pressurized chassis 1 are fixedly connected to the air outlet pipe 14 and the air inlet pipe 13 respectively. The first one-way valve 12 is installed on the air inlet pipe 13, and the second one-way valve 15 is installed on the air outlet pipe 14. The support base 16 is installed on the top of the pressurized chassis 1.

[0049] The pedal drive assembly includes a straight slide 2, an L-shaped plate 3, a foot pedal 4, an oblique frame 19, a push rod 20 and a second piston 21. A straight slide 2 is provided on the top of the pressurized chassis 1. The straight slide 2 is fitted and slidably connected to the upright portion of the L-shaped plate 3. The push rod 20 is fixedly connected to the side wall of the bottom of the L-shaped plate 3. The foot pedal 4 is fixedly connected to the outer end of the L-shaped plate 3. The outer wall of the second piston 21 is fitted and slidably connected to the inner wall of the pressurized chassis 1. The end surface of the second piston 21 away from the air inlet of the pressurized chassis 1 is fixedly connected to the oblique frame 19 used in conjunction with the push rod 20.

[0050] The reset component uses a second elastic member 18, and both ends of the second elastic member 18 are fixedly connected to the inner end surface away from the air inlet of the pressurized chassis 1 and the end surface of the second piston 21 away from the air inlet of the pressurized chassis 1;

[0051] When the foot is stepped on, the foot pedal 4 of the foot-operated one-way air supply assembly moves downward, and the foot pedal 4 in the original position moves downward, and the foot pedal 4 drives the L-shaped plate 3 to move downward along the straight slide groove 2, and the L-shaped plate 3 drives the push rod 20 to move downward, and the push rod 20 drives the second piston 21 to move toward the outlet pipe 14 of the one-way air supply assembly through the oblique frame 19, the first one-way valve 12 is closed, and the second one-way valve 15 is opened to push the gas of the pressurized chassis 1 into the outlet pipe 14, and then release the foot, the second elastic member 18 of the reset assembly drives the second piston 21 to move away from the outlet pipe 14, the first one-way valve 12 is opened, and the second one-way valve 15 is closed to allow the outside gas to enter the pressurized chassis 1 through the air inlet pipe 13, and the foot pedal 4 returns to its original position. When the foot pedal 4 is stepped on again, it moves downward, and the air inlet pipe 13 realizes one-way air supply to the pressing assembly, so that the pressing assembly generates a large thrust, which is beneficial for the crimping terminal to generate a large crimping force, can avoid the terminal from falling off, has no power supply requirement, and improves practicality.

[0052] Just step on the foot pedal 4 downwards, and after the foot is separated from the foot pedal 4, the foot pedal 4 returns to the uppermost end under the action of the reset component, and the one-way air supply saves effort.

[0053] The top of the support seat 16 is connected to a pressing component, which is connected to a one-way air supply component;

[0054] The pressing assembly includes a push rod 9, an air cylinder 10 and a first piston 17. The top of the air outlet pipe 14 is installed in the air inlet hole of the air cylinder 10. The first piston 17 is slidably connected in the air cylinder 10. The side wall of the first piston 17 away from the air inlet hole of the air cylinder 10 is fixedly connected to the push rod 9. The push rod 9 is slidably connected to the sliding hole opened in the air cylinder 10.

[0055] A pressure relief assembly 11 is fixedly connected to the side wall of the air cylinder 10 near its air inlet, and the pressure relief assembly 11 is used to release pressure from the pressing assembly;

[0056] The pressure relief assembly 11 includes a pressure relief cylinder 111, a transverse hole 112, a stopper 113, a threaded column 114, a rotating block 115 and a pressure relief hole 116. The side wall of the air cylinder 10 near its air inlet is provided with a transverse hole 112. The air cylinder 10 is fixedly connected to the pressure relief cylinder 111 at the outer end of the transverse hole 112. The outer end of the pressure relief cylinder 111 is threadedly connected to the threaded column 114. The outer end of the threaded column 114 is fixedly connected to the rotating block 115. The inner end of the threaded column 114 is fixedly connected to the stopper 113 that is slidably connected to the inner wall of the pressure relief cylinder 111. The pressure relief cylinder 111 is provided with a pressure relief hole 116.

[0057] The rotating block 115 of the pressure relief assembly 11 drives the threaded column 114 to rotate, and the threaded column 114 drives the stop block 113 to move to the outside of the pressure relief hole 116. The gas in the cylinder 10 is discharged from the horizontal hole 112 and the pressure relief hole 116, thereby realizing rapid pressure relief of the cylinder 10. After the pressure is relieved, the cylinder 10 provides space for the push rod 9 to move, which is convenient for adjusting the position of the crimping mold 6 at the inner end.

[0058] The side wall of the air cylinder 10 away from the pressure relief assembly 11 is fixedly connected with a lower crescent plate 5 and an upper crescent plate 8, and the lower crescent plate 5 and the upper crescent plate 8 are arranged opposite each other, and the outer ends of the lower crescent plate 5 and the upper crescent plate 8 are connected with a locking assembly 7;

[0059] The air cylinder 10 and the lower crescent plate 5 are installed on the top of the support seat 16.

[0060] The lower crescent plate 5 and the upper crescent plate 8 are connected to two identical crimping dies 6, and the crimping dies 6 are arranged opposite to each other. The crimping die 6 close to the pressing component is in contact with the driving end, and the locking component 7 is plugged into the crimping die 6 away from the pressing component to fix the crimping die 6 away from the pressing component.

[0061] The crimping mold 6 includes a side plate 61, a V-shaped groove 62, a circular plate 63, a limit slide 64 and a limit slide 65. The inner arc surface of the lower crescent plate 5 and the upper crescent plate 8 are provided with a limit slide 65. The limit slide 65 is limited and slidingly connected to the limit slide 64. The circular plate 63 is fixedly connected between the limit slides 64. The side plate 61 is fixedly connected to the circular plate 63. The inner wall of the side plate 61 is provided with a V-shaped groove 62. The two groups of V-grooves 62 cooperate to crimp the terminal into a regular hexagon.

[0062] The circular plate 63 of the crimping mold 6 drives the limiting slider 64 to rotate and slide in the limiting groove 65. The outer wall of the circular plate 63 at the inner end contacts the end of the push rod 9 of the pressing assembly. The lower crescent plate 5 and the upper crescent plate 8 radially limit the circular plate 63 through the limiting slider 64 and the limiting groove 65.

[0063] Example 2

[0064] Based on Example 1, see Figure 1 、 5 As shown in Figures 6 and 8, the locking assembly 7 includes an upper fixed plate 71, a locking rod 72, a trapezoidal block 73, a first elastic member 74, a straight sliding groove 75 and a transverse groove 76. The top of the locking rod 72 is fixedly connected to the upper fixed plate 71, the circular plate 63, the lower crescent plate 5 and the upper crescent plate 8 are all provided with a straight sliding groove 75, and the locking rod 72 is fitted and slidably connected to the straight sliding groove 75, and a transverse groove 76 is provided on the side wall of the lower end of the locking rod 72, and the inner end of the transverse groove 76 is fixedly connected to the first elastic member 74, and the outer end of the first elastic member 74 is fixedly connected to the trapezoidal block 73, and the trapezoidal block 73 is fitted and slidably connected to the inner wall of the transverse groove 76, and the top of the trapezoidal block 73 is in contact with the bottom of the lower crescent plate 5.

[0065] When the lock body 71 is in the unlocking state, the locking lever 72 is locked and the locking lever 73 is locked. When the lock body 71 is unlocked, the locking lever 72 is locked and the locking lever 73 is locked. When the lock body 71 is unlocked, the locking lever 72 is locked and the locking lever 73 is locked.

[0066] In order to better achieve the purpose of the present invention, the present invention also provides a crimping method of a large-diameter cable terminal crimping device, comprising the following steps:

[0067] Step 1: Move the pressurized chassis 1 to the location where crimping is required, and select a symmetrical crimping die 6 according to the diameter of the large-diameter cable;

[0068] When the locking ram 73 is in the closed position, the locking ram 73 is in the closed position, and the locking ram 73 is in the closed position, so that the locking ram 73 is in the closed position, and the locking ram 73 is in the closed position, so that the locking ram 73 is in the closed position, and the locking ram 73 is in the closed position, so that the locking ram 73 is in the closed position, and the locking ram 73 is in the closed position, so that the locking ram 73 is in the closed position, and the locking ram 73 is in the closed position, so that the locking ram 73 is in the closed position, and the locking ram 73 is in the closed position, so that the locking ram 7 is in the closed position, and the locking ram 73 is in the closed position, so that the locking ram 73 is in the closed position, and the locking ram 73 is in the closed position, so that the locking ram 7 is in the closed position, and the locking ram 73 is in the closed position, so that the locking ram 7 is in the closed position, and the locking ram 73 is in the closed position, so that the locking ram 7 is in the closed position, and the locking ram 73 is in the closed position, so that the locking ram 7 is in the closed position, and the locking ram 73 is in the closed position, so that the locking ram 7 is in the closed position, and the locking ram 73 is in the closed position, so that the locking ram 7 is in the closed position,

[0069] Step 3: Connect the terminal block with the antioxidant to the wire of the cable and then move it into the V-shaped groove 62;

[0070] Step 4: Step on the foot pedal 4 of the foot-operated one-way air supply assembly, the foot pedal 4 in the original position moves downward, the foot pedal 4 drives the L-shaped plate 3 to move downward along the straight slide groove 2, the L-shaped plate 3 drives the push rod 20 to move downward, the push rod 20 drives the second piston 21 to move toward the outlet pipe 14 of the one-way air supply assembly through the oblique frame 19, the first one-way valve 12 is closed, the second one-way valve 15 is opened to push the gas of the pressurized chassis 1 into the outlet pipe 14, then release the foot, the second elastic member 18 of the reset assembly drives the second piston 21 to move away from the outlet pipe 14, the first one-way valve 12 is opened, the second one-way valve 15 is closed, and the external gas enters the pressurized chassis 1 through the inlet pipe 13, and the foot pedal 4 returns to its original position, and then steps on the foot pedal 4 to move downward, and the inlet pipe 13 realizes one-way air supply to the pressing assembly;

[0071] Step 5: The gas enters the air cylinder 10 of the pressing assembly through the air inlet pipe 13, and the gas pushes the first piston 17, and the first piston 17 drives the push rod 9 to move, so that the push rod 9 of the pressing assembly generates a large thrust, which is beneficial for the crimping terminal to generate a large crimping force, and can avoid the terminal from falling off. There is no power supply requirement, which improves practicality. The push rod 9 pushes the circular plate 63 at the inner end to move, and the circular plate 63 at the inner end drives the side plate 61 to move. When the two side plates 61 are in contact, the two V-shaped grooves 62 cooperate to crimp the terminal with antioxidant to the wire of the cable, so as to achieve one-time crimping of the large-diameter cable terminal.

[0072] Step 6: Rotate the rotating block 115 of the pressure relief assembly 11, the rotating block 115 drives the threaded column 114 to rotate, the threaded column 114 drives the stopper 113 to move to the outside of the pressure relief hole 116, and the gas in the cylinder 10 is discharged from the cylinder transverse hole 112 and the pressure relief hole 116, thereby realizing rapid pressure relief of the cylinder 10. After the pressure relief of the cylinder 10, the activity space of the push rod 9 is provided, which is convenient for adjusting the position of the crimping die 6 at the inner end. After the pressure relief, the rotating block 115 of the pressure relief assembly 11 is rotated, the rotating block 115 drives the threaded column 114 to rotate, and the threaded column 114 drives the stopper 113 to move to the inner side of the pressure relief hole 116;

[0073] Step 7: Push the push rod 9 toward the pressure relief assembly 11, push the inner crimping die 6 to move, and then move the part to be crimped to between the V-shaped grooves 62;

[0074] Step 8. Repeat steps 4 to 7. Large diameter cable terminals can be crimped continuously to achieve large diameter cable terminal crimping.

[0075] There are two types of crimping dies 6 for cables of the same diameter. The large crimping dies 6 need to crimp the crimping terminals three times, and the small crimping dies 6 need to crimp the crimping terminals eight times.

[0076] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A large diameter cable terminal crimping device, comprising a support seat (16), characterized in that: The lower end of the support seat (16) is connected to a pedal-type one-way air supply component; The pedal-type one-way air supply assembly includes a pedal drive assembly, a reset assembly and a one-way air supply assembly, wherein the one-way air supply assembly is fixedly connected to the reset assembly, the reset assembly is fixedly connected to the pedal drive assembly, and the pedal drive assembly is movably connected to the one-way air supply assembly; The top of the support seat (16) is connected to a pressing component, and the pressing component is connected to a one-way air supply component; The pressing assembly comprises a push rod (9), an air cylinder (10) and a first piston (17); the top of the one-way air supply assembly is mounted in the air inlet of the air cylinder (10); the first piston (17) is slidably connected in the air cylinder (10); the side wall of the first piston (17) away from the air inlet of the air cylinder (10) is fixedly connected to the push rod (9); the push rod (9) is slidably connected to the sliding hole provided in the air cylinder (10); The side wall of the air cylinder (10) close to the air inlet is fixedly connected to a pressure relief component (11), and the pressure relief component (11) is used to relieve pressure from the pressing component; The side wall of the air cylinder (10) away from the pressure relief assembly (11) is fixedly connected to a lower crescent plate (5) and an upper crescent plate (8), and the lower crescent plate (5) and the upper crescent plate (8) are arranged opposite to each other, and the outer ends of the lower crescent plate (5) and the upper crescent plate (8) are connected to a locking assembly (7); The lower crescent plate (5) and the upper crescent plate (8) are connected to two identical crimping dies (6), and the crimping dies (6) are arranged opposite to each other, the crimping dies (6) close to the pressing component are in contact with the driving end, and the locking component (7) is plugged into the crimping dies (6) away from the locking component (7), so that the crimping dies (6) away from the locking component (7) are fixed; The one-way air supply assembly comprises a pressurized chassis (1), a first one-way valve (12), an air inlet pipe (13), an air outlet pipe (14) and a second one-way valve (15); the air outlet and air inlet of the pressurized chassis (1) are respectively fixedly connected with the air outlet pipe (14) and the air inlet pipe (13); the first one-way valve (12) is installed on the air inlet pipe (13); the second one-way valve (15) is installed on the air outlet pipe (14); and the support seat (16) is installed on the top of the pressurized chassis (1); The pedal drive assembly comprises a straight slide (2), an L-shaped plate (3), a foot pedal (4), an oblique frame (19), a push rod (20) and a second piston (21); a straight slide (2) is provided on the top of the pressurizing case (1); the straight slide (2) is fitted and slidably connected to the upright portion of the L-shaped plate (3); the bottom side wall of the L-shaped plate (3) is fixedly connected to the push rod (20); the outer end of the L-shaped plate (3) is fixedly connected to the foot pedal (4); the outer wall of the second piston (21) is fitted and slidably connected to the inner wall of the pressurizing case (1); and the end face of the second piston (21) away from the air inlet of the pressurizing case (1) is fixedly connected to the oblique frame (19) used in conjunction with the push rod (20).

2. A large diameter cable terminal crimping device according to claim 1, characterized in that: The reset assembly uses a second elastic member (18), and both ends of the second elastic member (18) are fixedly connected to the inner end surface away from the air inlet of the pressurized chassis (1) and the end surface of the second piston (21) away from the air inlet of the pressurized chassis (1).

3. A large diameter cable terminal crimping device according to claim 2, characterized in that: The pressure relief assembly (11) includes a pressure relief cylinder (111), a transverse hole (112), a stopper (113), a threaded column (114), a rotating block (115) and a pressure relief hole (116). The air cylinder (10) is provided with a transverse hole (112) on its side wall near the air inlet. The air cylinder (10) is fixedly connected to the pressure relief cylinder (111) at the outer end of the transverse hole (112). The outer end of the pressure relief cylinder (111) is threadedly connected to the threaded column (114). The outer end of the threaded column (114) is fixedly connected to the rotating block (115). The inner end of the threaded column (114) is fixedly connected to the stopper (113) that is slidably connected to the inner wall of the pressure relief cylinder (111). The pressure relief cylinder (111) is provided with a pressure relief hole (116).

4. A large diameter cable terminal crimping device according to claim 3, characterized in that: The crimping die (6) comprises a side plate (61), a V-shaped groove (62), a circular plate (63), a limiting slider (64) and a limiting slide groove (65). The inner arc surface of the lower crescent plate (5) and the upper crescent plate (8) are provided with a limiting slide groove (65). The limiting slide groove (65) is connected to the limiting slider (64) in a limiting sliding manner. The limiting sliders (64) are fixedly connected with a circular plate (63). The circular plate (63) is fixedly connected with a side plate (61). The inner wall of the side plate (61) is provided with a V-shaped groove (62). The two groups of V-shaped grooves (62) cooperate to crimp the terminal into a regular hexagon.

5. A large diameter cable terminal crimping device according to claim 4, characterized in that: The locking assembly (7) comprises an upper fixed plate (71), a locking rod (72), a trapezoidal block (73), a first elastic member (74), a straight sliding groove (75) and a transverse groove (76), wherein the top of the locking rod (72) is fixedly connected to the upper fixed plate (71), the circular plate (63), the lower crescent plate (5) and the upper crescent plate (8) are all provided with a straight sliding groove (75), and the locking rod (72) is slidably connected to the straight sliding groove (75), the side wall of the lower end of the locking rod (72) is provided with a transverse groove (76), the inner end of the transverse groove (76) is fixedly connected to the first elastic member (74), and the outer end of the first elastic member (74) is fixedly connected to the trapezoidal block (73).

6. A large diameter cable terminal crimping device according to claim 5, characterized in that: The trapezoidal block (73) is in sliding contact with the inner wall of the transverse groove (76), and the top of the trapezoidal block (73) is in contact with the bottom of the lower crescent plate (5).

7. A crimping method for a large-diameter cable terminal crimping device according to claim 6, characterized in that: The following steps are involved: Step 1: Select a symmetrical crimping die (6) according to the diameter of the large-diameter cable; Step 2: The circular plate (63) of the crimping die (6) drives the limiting slider (64) to rotate and slide in the limiting slot (65). The outer wall of the circular plate (63) at the inner end contacts the end of the push rod (9) of the pressing assembly. The lower crescent plate (5) and the upper crescent plate (8) radially limit the circular plate (63) through the limiting slider (64) and the limiting slot (65). Then, the upper fixed plate (71) drives the locking rod (72) to move toward the straight sliding slot (75). ) is inserted, and after the upper crescent plate (8) contacts the trapezoidal block (73), the trapezoidal block (73) is pushed to move into the transverse groove (76). When the trapezoidal block (73) moves to the bottom of the lower crescent plate (5), the first elastic member (74) pushes the trapezoidal block (73) to move outward, and the trapezoidal block (73) moves to contact the bottom of the lower crescent plate (5). The locking assembly (7) fixes the crimping die (6) at the outer end, thereby realizing the rapid installation of the crimping die (6); Step 3: Connect the terminal with antioxidant to the wire of the cable and then move it into the V-shaped groove (62); Step 4: Step on the pedal (4) of the pedal drive assembly of the pedal-type one-way air supply assembly, the pedal (4) in the original position moves downward, the pedal (4) drives the L-shaped plate (3) to move downward along the straight slide groove (2), the L-shaped plate (3) drives the push rod (20) to move downward, the push rod (20) drives the second piston (21) to move toward the outlet pipe (14) of the one-way air supply assembly through the oblique frame (19), the first one-way valve (12) is closed, and the second one-way valve (15) is opened. Push the gas in the pressurized case (1) into the air outlet pipe (14), then release the foot, the second elastic member (18) of the reset assembly drives the second piston (21) to move away from the air outlet pipe (14), the first one-way valve (12) opens, the second one-way valve (15) closes, and the external gas enters the pressurized case (1) through the air inlet pipe (13), and the foot pedal (4) returns to its original position. Then, step on the foot pedal (4) to move downward, and the air inlet pipe (13) realizes one-way air supply to the pressurized assembly; Step 5: The gas enters the gas cylinder (10) of the pressing assembly through the air inlet pipe (13), and the gas pushes the first piston (17), the first piston (17) drives the push rod (9) to move, the push rod (9) pushes the inner circular plate (63) to move, the inner circular plate (63) drives the side plate (61) to move, and when the two side plates (61) are in contact, the two V-shaped grooves (62) cooperate to crimp the terminal with the antioxidant and the conductor of the cable, thereby achieving one-time crimping of the large-diameter cable terminal; Step 6: Rotate the rotating block (115) of the pressure relief assembly (11), the rotating block (115) drives the threaded column (114) to rotate, the threaded column (114) drives the stopper (113) to move to the outside of the pressure relief hole (116), and the gas in the cylinder (10) is discharged from the cylinder transverse hole (112) and the pressure relief hole (116), thereby achieving rapid pressure relief of the cylinder (10). After the pressure is relieved, rotate the rotating block (115) of the pressure relief assembly (11), the rotating block (115) drives the threaded column (114) to rotate, and the threaded column (114) drives the stopper (113) to move to the inside of the pressure relief hole (116); Step 7: Push the push rod (9) toward the pressure relief assembly (11), push the inner crimping die (6) to move, and then move the portion to be crimped to between the V-shaped grooves (62); Step 8. Repeat steps 4 to 7. Large diameter cable terminals can be crimped continuously to achieve large diameter cable terminal crimping.

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