Stamping die of a wiring harness power connection terminal stamping device

Abstract

The present application relates to the technical field of electrical contact material manufacturing, and specifically discloses a stamping die of a wire harness power connection terminal stamping device, which comprises a wedge-shaped block fixedly connected to a moving frame, a first support fixedly connected below a support frame, a first rotating frame rotatably connected to the first support, and a first return spring fixedly connected between a lower die and a bottom plate. The present application can ensure precise synchronization of the operation frequency between the upper and lower dies, ensure synchronous die closing, improve the stamping quality, ensure uniform distribution of the stamping force of the upper and lower dies on the copper strip, improve the forming precision of the wire harness power connection terminal, avoid defects such as deformation and burrs, enhance stability, reduce the interference of the die closing process on the position stability of the copper strip, ensure the machining precision of subsequent processes, optimize production efficiency, effectively improve the yield of the wire harness power connection terminal by improving the stamping quality, reduce the generation of waste materials, and save production costs.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electrical contact material manufacturing, and specifically discloses a stamping die of a wiring harness electrical terminal stamping device. BACKGROUND

[0002] The wiring harness electrical terminal is a key component in the electrical connection system, and the manufacturing quality thereof directly affects the use stability of the electrical connection. At present, the mainstream production process of the wiring harness electrical terminal adopts a stamping forming technology, that is, a copper strip or other conductive material is subjected to pressure by a stamping device, so that the copper strip or other conductive material forms a specific shape under the action of a die. This technology has advantages of high efficiency, high precision and low cost, and can meet large-scale industrial production. However, in the actual production process, the continuous friction between the die and the copper strip will accelerate the die wear and affect the processing precision. Therefore, the existing technology usually sets a buffer spacing between the die and the copper strip, and the hydraulic device synchronously completes the spacing movement and the stamping forming two actions in the pressing process.

[0003] However, the existing stamping device generally adopts an independent double-hydraulic system control scheme to independently control the upper die and the lower die, which can realize accurate displacement control of the die. However, in the actual processing process, since the hydraulic system controls the stroke distance, movement cycle and working frequency of the upper die and the lower die, once the frequencies of the two hydraulic systems are asynchronous, the upper die and the lower die cannot be accurately synchronized. Specifically, ① when the upper die has completed the stamping stroke and the lower die has not arrived, the stamping force distribution will be unbalanced, which not only affects the product forming precision, but also causes terminal deformation or burr and other quality problems; ② when the die closing position has an axial deviation, the copper strip will be deformed as a whole, thereby affecting the processing precision of the subsequent process. These process defects not only reduce the product quality of the wiring harness electrical terminal, but also increase the production cost due to rework and trimming. SUMMARY

[0004] In order to overcome the defects, the technical problem to be solved is to provide a stamping die of a wiring harness electrical terminal stamping device, which can control the accurate cooperation of the upper die and the lower die for die closing.

[0005] The technical scheme of the present application is: a stamping die of a wiring harness electrical terminal stamping device, comprising: a mounting frame composed of a support frame and a bottom plate; and a stamping mechanism arranged on the mounting frame; the stamping mechanism comprises: a moving frame slidably connected to the support frame; an upper die fixedly connected to the moving frame; a lower die slidably connected to the support frame; and a hydraulic machine fixedly connected to the support frame.

[0006] The control mechanism is arranged on the mounting frame, and comprises: a wedge block fixedly connected to the moving frame, an inclined surface being arranged on one side of the wedge block close to the upper die and the lower die; a first support fixedly connected below the supporting frame; a first rotating frame rotatably connected to the first support, one end of the first rotating frame being slidably connected to the lower die; a roller rotatably connected to the other end of the first rotating frame, the first rotating frame being in contact with the roller during movement of the wedge block; and a first reset spring fixedly connected between the lower die and the bottom plate.

[0007] In one of the embodiments, a vertical surface is arranged on one side of the wedge block close to the upper die and the lower die, and the vertical surface is arranged above the inclined surface; the supporting mechanism is arranged on the mounting frame, and comprises: an insertion rod slidably connected in the supporting frame; a second reset spring fixedly connected between the insertion rod and the supporting frame; a hole is arranged on the lower die, the insertion rod and the hole are in plug-in cooperation; a second rotating frame rotatably connected to the supporting frame, an upper end of the second rotating frame being in contact with the insertion rod, and an inclined contact surface being arranged on a lower end of the second rotating frame, the wedge block being in contact with the inclined contact surface of the second rotating frame during movement of the wedge block; and a first reset torsion spring fixedly connected between the second rotating frame and the supporting frame.

[0008] In one of the embodiments, a positioning hole is arranged on the lower die, the positioning hole being arranged above the hole, and an arc surface being arranged on the positioning hole and matched with the end of the insertion rod.

[0009] In one of the embodiments, the material moving mechanism is arranged on the mounting frame, and comprises: a guide frame fixedly connected to the supporting frame, a material moving roller rotatably connected to an inner side wall of the guide frame; an auxiliary roller rotatably connected to the guide frame, the auxiliary roller being arranged on a side of the guide frame in contact with the copper strip; a moving strip fixedly connected below the moving frame; a pawl rotatably connected to the moving strip, the pawl being rotatable only to one side; a second reset torsion spring fixedly connected between the pawl and the moving strip; and a ratchet wheel rotatably connected to the guide frame, the ratchet wheel being coaxially fixed with the material moving roller.

[0010] In one of the embodiments, the first positioning mechanism is arranged on the mounting frame, and comprises: a pressing strip slidably connected to the moving frame; a first adjusting spring fixedly connected between the pressing strip and the moving frame; a second support slidably connected to the supporting frame, the second support being arranged below the material moving roller; a pressing wheel rotatably connected to the second support; a third reset spring fixedly connected between the second support and the supporting frame; and a third rotating frame rotatably connected to the supporting frame, one end of the third rotating frame being slidably connected to the second support, and the pressing strip being in contact with the other end of the third rotating frame during displacement.

[0011] In one of the embodiments, the second positioning mechanism further comprises: an adjusting column slidingly connected to the pressing plate, the adjusting column is arranged in a row along the length direction of the pressing plate; and a second adjusting spring fixedly connected between the pressing plate and the adjusting column.

[0012] In one of the embodiments, the second positioning mechanism further comprises: an adjusting column slidingly connected to the pressing plate, the adjusting column is arranged in a row along the length direction of the pressing plate; and a second adjusting spring fixedly connected between the pressing plate and the adjusting column.

[0013] In one of the embodiments, the punching mechanism is arranged in equal-interval manner in at least one group according to the punching process; the number of the control mechanism, the supporting mechanism, the material moving mechanism, the first positioning mechanism and the second positioning mechanism is arranged in equal ratio according to the number of the punching mechanism, wherein the guide frame of all the material moving mechanisms is designed in integrated manner, and the total length of the pawls is consistent with the interval between the adjacent two groups of the punching mechanism.

[0014] The beneficial effects are: the control mechanism is used to ensure the accurate synchronization of the operation frequency between the upper and lower molds, to ensure the synchronous mold closing, to improve the punching quality, to ensure the uniform distribution of the punching force of the upper and lower molds on the copper strip, to improve the forming precision of the wire harness terminal, and to avoid defects such as deformation and burr; to enhance the stability, to reduce the interference of the mold closing process on the position stability of the copper strip, to ensure the machining precision of the subsequent process; to optimize the production efficiency, to effectively improve the yield of the wire harness terminal by improving the punching quality, to reduce the generation of waste materials, and to save the production cost. The supporting mechanism is used to provide additional auxiliary supporting force for the lower mold during mold closing, to enhance the rigid support of the lower mold, to avoid the slight deformation of the lower mold caused by uneven stress during mold closing, to ensure the accurate alignment of the upper and lower molds, to increase the stability and punching precision of the whole device, and to further improve the production quality. The material moving mechanism is used to realize the accurate positioning and transfer of the copper strip by the mechanical linkage with the punching mechanism, to simplify the power system structure, and to reduce the energy consumption. The first positioning mechanism and the second positioning mechanism are used for double positioning, and the copper strip can still maintain the position precision during the high-speed continuous punching process, to provide technical support for the batch production of high-precision wire harness terminals. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 Fig. 1 is a schematic diagram of the overall structure of the present application.

[0016] Figure 2 Fig. 2 is a schematic diagram of the internal structure of the present application.

[0017] Figure 3 Fig. 3 is a schematic diagram of the connection structure of the punching mechanism in the present application.

[0018] Figure 4 Fig. 4 is a schematic diagram of the connection structure of the control mechanism and the punching mechanism in the present application.

[0019] Figure 5 Fig. 5 is a separate view of the connection structure of the control mechanism and the punching mechanism in the present application.

[0020] Figure 6 Fig. 6 is a sectional view of the connection structure of the support mechanism and the punching mechanism in the present application.

[0021] Figure 7 Fig. 7 is a schematic diagram of the cooperation structure of the support mechanism and the punching mechanism in the present application.

[0022] Figure 8 Fig. 8 is a schematic diagram of the connection structure of the guide frame, the material moving roller and the auxiliary roller in the present application.

[0023] Figure 9 Fig. 9 is a schematic diagram of the connection structure of the material moving mechanism in the present application.

[0024] Figure 10 Fig. 10 is a schematic diagram of the connection structure of the first positioning mechanism in the present application.

[0025] Figure 11 Fig. 11 is a schematic diagram of the connection structure of the second positioning mechanism in the present application.

[0026] In the drawing marks: 1 - installation frame, 101 - outer frame, 102 - support frame, 103 - bottom plate, 2 - stamping mechanism, 201 - first guide rod, 202 - moving frame, 203 - upper die, 204 - second guide rod, 205 - lower die, 206 - hydraulic machine, 3 - control mechanism, 301 - wedge block, 301a - inclined surface, 301b - vertical surface, 302 - first support, 303 - first rotating frame, 303a - sliding groove, 303b - protruding block, 304 - roller, 305 - first return spring, 4 - supporting mechanism, 401 - insertion rod, 402 - second return spring, 403 - insertion hole, 403a - positioning hole, 404 - second rotating frame, 405 - first return torsion spring, 5 - material moving mechanism, 501 - guide frame, 502 - material moving roller, 503 - auxiliary roller, 504 - moving strip, 505 - third guide rod, 506 - pawl, 507 - second return torsion spring, 508 - ratchet wheel, 6 - first positioning mechanism, 601 - fourth guide rod, 602 - pressing strip, 603 - first adjusting spring, 604 - second support, 605 - pressing wheel, 606 - third return spring, 607 - third rotating frame, 7 - second positioning mechanism, 701 - pressing rod, 702 - third support, 703 - pressing plate, 704 - cushion block, 705 - toothed plate, 706 - gear wheel, 707 - adjusting column, 708 - second adjusting spring. DETAILED DESCRIPTION

[0027] The application will be further described below in connection with the embodiments shown in the drawings.

[0028] Embodiment: A stamping die of a wiring harness power terminal stamping device, as shown in 1 and Figure 2 , comprising: an installation frame 1, the installation frame 1 comprising: an outer frame 101, the outer frame 101 providing external protection; a support frame 102 fixedly installed on the top of the outer frame 101, the support frame 102 passing through left and right, a copper strip will pass through the support frame 102 from left to right for stamping processing, the support frame 102 being provided with upper and lower side plates; a bottom plate 103 fixedly installed on the bottom of the outer frame 101.

[0029] As Figure 1 , Figure 2 and Figure 3As shown, it also comprises: a punching mechanism 2 arranged on the mounting frame 1, which is used for punching processing of the copper strip, and the punching mechanism 2 is arranged in three groups from left to right in a straight line, and sequentially completes three punching forming processes of the copper strip. The punching mechanism 2 comprises: a first guide rod 201 fixedly installed on the bottom plate 103; a moving frame 202 slidingly installed on the lower side plate of the support frame 102, and the moving frame 202 is slidingly installed with the first guide rod 201; an upper die 203 fixedly installed on the moving frame 202; a second guide rod 204 fixedly installed on the bottom plate 103; a lower die 205 slidingly installed on the lower side plate of the support frame 102, and the lower die 205 is slidingly installed with the second guide rod 204; the upper die 203 and the lower die 205 are synchronously and reversely displaced in the vertical direction, and when the two are in contact, they apply pressure to the copper strip for punching processing; a hydraulic machine 206 fixedly installed on the upper side plate of the support frame 102, and the extension shaft of the hydraulic machine 206 is fixedly installed with the moving frame 202, so as to control the vertical displacement of the moving frame 202.

[0030] As shown in Figure 2 , Figure 4 and Figure 5 , it also comprises: a control mechanism 3 arranged on the mounting frame 1, which is used for controlling the punching of the copper strip by the lower die 205 cooperating with the upper die 203. Each punching mechanism 2 is correspondingly connected with a control mechanism 3, and the control mechanism 3 comprises: wedge-shaped blocks 301 fixedly installed on the front and back sides of the lower end of the moving frame 202, and an inclined surface 301a and a vertical surface 301b are arranged on one side of the two wedge-shaped blocks 301 close to the upper die 203 and the lower die 205, wherein the vertical surface 301b is arranged above the inclined surface 301a; first supports 302 fixedly installed on the front and back positions below the lower side plate of the support frame 102; first rotating frames 303 rotatingly installed on the two first supports 302 respectively, wherein a sliding groove 303a is formed on the lower die 205 and arranged in the horizontal direction, the upper end of each of the two first rotating frames 303 is fixedly installed with a protruding block 303b, and the protruding block 303b is slidingly installed in the sliding groove 303a, so that the first rotating frame 303 is slidingly installed with the lower die 205; rollers 304 rotatingly installed on the lower end of the two first rotating frames 303, and in the moving process of the wedge-shaped block 301, the first rotating frame 303 will be in contact with the roller 304, so that the vertical displacement of the wedge-shaped block 301 is transmitted to the first rotating frame 303 through the contact of the inclined surface 301a, and is converted into the reverse vertical displacement of the lower die 205; a first reset spring 305 fixedly installed between the lower die 205 and the bottom plate 103, and the first reset spring 305 is sleeved on the second guide rod 204.

[0031] When the hydraulic machine 206 controls the moving frame 202 and the upper die 203 thereon to move downward, the moving frame 202 will move the wedge block 301 downward to contact the first rotating frame 303, the roller 304 enables the wedge block 301 to smoothly contact the first rotating frame 303, the wedge block 301 then extrudes the lower end of the first rotating frame 303 to move through the inclined surface 301a thereon, and controls the first rotating frame 303 to rotate, the two first rotating frames 303 jointly act to push the lower die 205 to move upward, the first return spring 305 is stretched, when the wedge block 301 moves to the vertical surface 301b thereon to contact the lower end of the first rotating frame 303, the lower die 205 will no longer move upward, at this time the lower die 205 has moved to the lower side of the copper strip and contacted the copper strip, while the upper die 203 continues to move downward, until the upper die 203 and the lower die 205 are combined, the copper strip is punched; conversely, the hydraulic machine 206 controls the moving frame 202 to move upward, the upper die 203 moves upward, while the lower die 205 is not moved, until the wedge block 301 moves to the inclined surface 301a thereon to contact the first rotating frame 303, the first return spring 305 will only restore the deformation, and reset the lower die 205 downward, the lower die 205 reversely displaces to reset the first rotating frame 303 reversely.

[0032] As Figure 2 , Figure 6 and Figure 7As shown, further comprises: support mechanism 4 arranged on the mounting frame 1, the support mechanism 4 is used for providing stable support for the lower mold 205 when the mold is closed, to improve the mold stability of the upper mold 203 and the lower mold 205, each stamping mechanism 2 is correspondingly connected with a support mechanism 4, the support mechanism 4 comprises: the insertion rod 401 slidingly installed in the lower side plate of the support frame 102, the insertion rod 401 is provided with two groups, which are respectively arranged on the front and rear sides of the lower mold 205; The second reset spring 402 is fixedly installed between the insertion rod 401 and the support frame 102, and the second reset spring 402 is sleeved on the insertion rod 401; The front and rear walls of the lower mold 205 are provided with insertion holes 403, and the insertion rod 401 and the insertion hole 403 are insertedly matched; The front and rear sides of the lower mold 205 are provided with positioning holes 403a, and the positioning holes 403a are located above the insertion holes 403, wherein the insertion hole 403 is a deep hole, the positioning hole 403a is a shallow hole, the positioning hole 403a is provided with an arc surface matched with the end of the insertion rod 401, and the upper part of the hole rim of the insertion hole 403 is provided with an arc transition part; The second rotary frame 404 is rotatably installed on the lower side plate of the support frame 102, the second rotary frame 404 is provided with two, which are respectively arranged on the front and rear sides of the lower mold 205, the upper ends of the two second rotary frames 404 are respectively in contact with the two groups of insertion rods 401, and the lower end of the second rotary frame 404 is provided with an inclined contact surface; The first reset torsion spring 405 is fixedly installed between the second rotary frame 404 and the support frame 102, and the first reset torsion spring 405 is sleeved on the rotating shaft of the second rotary frame 404;

[0033] When the lower mold 205 is in the standby state, the insertion rod 401 is inserted into the positioning hole 403a, and the position of the lower mold 205 is limited. When the lower mold 205 starts to move upward, the arc surface of the positioning hole 403a will displace the insertion rod 401 to make the insertion rod 401 disengage from the positioning hole 403a, and the second reset spring 402 is deformed adaptively. During the displacement of the wedge-shaped block 301, when the wedge-shaped block 301 moves to the position where the vertical surface 301b contacts the first rotating frame 303, the lower end of the wedge-shaped block 301 will also contact the inclined contact surface of the lower end of the second rotating frame 404. Therefore, the wedge-shaped block 301 continues to move downward to press the second rotating frame 404 to rotate, the first reset torsion spring 405 is twisted, and the rotation of the second rotating frame 404 will push the insertion rod 401. At this time, the position of the lower mold 205 is fixed, and the position of the insertion rod 401 is opposite to the insertion hole 403, so that the insertion rod 401 is smoothly inserted into the insertion hole 403, and the second reset spring 402 is stretched. At this time, the insertion rod 401 will increase a supporting force on the lower mold 205 to improve the stability of the lower mold 205 during the molding process and improve the stamping effect on the copper strip. Conversely, when the wedge-shaped block 301 moves upward to reset and the inclined contact surface of the second rotating frame 404 is disengaged, the first reset torsion spring 405 restores the deformation, reverses the second rotating frame 404 to reset, and the upper end of the second rotating frame 404 is disengaged from the insertion rod 401. Then, the second reset spring 402 resets the insertion rod 401 to pull the insertion rod 401 out of the insertion hole 403, and the supporting relationship of the insertion rod 401 on the lower mold 205 is released. Subsequently, the lower mold 205 is controlled to move downward to reset, and the arc transition part at the upper part of the insertion hole 403 will press the insertion rod 401 to completely disengage from the insertion hole 403. At this time, the insertion rod 401 abuts against the outer surface of the lower mold 205, and the insertion rod 401 is inserted into the positioning hole 403a under the action of the second reset spring 402 until the lower mold 205 is relatively displaced to the position where the positioning hole 403a is opposite to the insertion rod 401. Then, the insertion rod 401 is automatically inserted into the positioning hole 403a under the action of the second reset spring 402 to limit the position of the lower mold 205 in the standby state.

[0034] As Figure 1 , Figure 2 , Figure 8 and Figure 9The device also comprises a material moving mechanism 5 arranged on the mounting frame 1, each stamping mechanism 2 is connected with a material moving mechanism 5, the material moving mechanism 5 is mechanically linked with the stamping mechanism 2, and the material moving mechanism 5 realizes the accurate transfer of the copper strip from left to right by using the main driving force of the stamping mechanism 2, the material moving mechanism 5 comprises a guide frame 501 fixedly installed on the lower side plate of the support frame 102, wherein the guide frames 501 of the three groups of material moving mechanisms 5 are integrated, so that the copper strip can be continuously and orderly subjected to three-stage stamping processing; material moving rollers 502 are rotatably installed on the front and rear inner side walls of the guide frame 501, the material moving rollers 502 are provided with grooves for increasing the friction coefficient, the material moving rollers 502 are in contact with the copper strip, and the copper strip is controlled to move rightwards by rotating the material moving rollers 502; auxiliary rollers 503 are rotatably installed on the guide frame 501, the auxiliary rollers 503 are arranged on the side of the guide frame 501 in contact with the copper strip, and the auxiliary rollers 503 are in rolling contact with the copper strip to reduce the friction, so that the copper strip can smoothly move rightwards; moving strips 504 are fixedly installed below the front and rear sides of the moving frame 202; two third guide rods 505 are fixedly installed on the lower side plate of the support frame 102, the two moving strips 504 are slidably installed with the two third guide rods 505; pawls 506 are rotatably installed on the moving strips 504, the moving strips 504 are provided with limiting portions on one side of the pawls 506, so that the pawls 506 can only rotate to one side, specifically, the pawls 506 are limited to only rotate upwards, and the total length of the pawls 506 is equal to the distance between the adjacent two stamping mechanisms 2; second reset torsion springs 507 are fixedly installed between the pawls 506 and the moving strips 504, and the second reset torsion springs 507 are sleeved on the rotating shafts of the pawls 506; ratchets 508 are rotatably installed on the front and rear sides of the guide frame 501, and each ratchet 508 is coaxially fixed with each material moving roller 502.

[0035] During the downward movement of the moving frame 202, the moving strips 504 move downward synchronously, so that the pawls 506 are in contact with the ratchets 508, at this time, the directions of the pawls 506 and the ratchets 508 are consistent, therefore, the ratchets 508 press the pawls 506 to rotate back to the direction of the moving strips 504, the second reset torsion springs 507 are deformed adaptively, so that the pawls 506 automatically rotate back after being separated from the ratchets 508, therefore, the ratchets 508 do not rotate at this time, and the position of the copper strip is fixed; when the moving frame 202 moves upward, the directions of the pawls 506 and the ratchets 508 are opposite, and the pawls 506 cannot rotate reversely, therefore, the upward movement of the moving strips 504 can drive the ratchets 508 to rotate clockwise through the cooperation of the pawls 506 and the ratchets 508, the ratchets 508 further drive the material moving rollers 502 to rotate, the material moving rollers 502 control the copper strip to move rightwards, and the auxiliary rollers 503 improve the smoothness of the movement of the copper strip, so as to realize the automatic feeding of the copper strip, and the total length of the pawls 506 enables the copper strip to move to the position below the next stamping mechanism 2, so as to be subjected to the next stage of stamping processing.

[0036] As Figure 1 , Figure 2and Figure 10 As shown, the first positioning mechanism 6 is arranged on the mounting frame 1, and is used to limit the position of the copper strip to improve the position accuracy when the copper strip is punched. The first positioning mechanism 6 comprises: fourth guide rods 601 arranged on the front and rear sides of the lower die 205, the fourth guide rods 601 are composed of two sections, a separation is arranged between the two sections, and the separation length is greater than the moving distance of the moving frame 202. The upper section of the fourth guide rod 601 is fixed with the moving frame 202, and the lower section is fixed with the lower side plate of the support frame 102. Pressing strips 602 are respectively and slidingly installed on the fourth guide rods 601 on the front and rear sides. First adjusting springs 603 are fixedly installed between the pressing strips 602 and the moving frame 202, and the first adjusting springs 603 are correspondingly sleeved on the fourth guide rods 601. Two second supports 604 are slidingly installed on the lower side plate of the support frame 102 through sliding shafts, and the two second supports 604 are arranged below the two material moving rollers 502. Pressing wheels 605 are respectively and rotatably installed on the two second supports 604. The second support 604 moves to control the pressing wheel 605 to tightly abut against the material moving roller 502, and the two cooperate to clamp and fix the copper strip. Third return springs 606 are fixedly installed between the second supports 604 and the support frame 102, and the third return springs 606 are sleeved on the sliding shafts of the second supports 604. Two third rotating frames 607 are rotatably installed on the lower side plate of the support frame 102, one end of each of the two third rotating frames 607 is slidingly installed with the second support 604 on the side, and the pressing strip 602 on the side corresponds to the other end of the third rotating frame 607. The third rotating frame 607 converts the vertical displacement of the pressing strip 602 into the reverse vertical displacement of the second support 604 and the pressing wheel 605 thereon.

[0037] In the process of moving down of the moving frame 202, the moving frame 202 will first press the pressing strip 602 down through the first adjusting spring 603, so that the pressing strip 602 is in contact with the third rotating frame 607, and the spacing between the upper and lower sections of the fourth guide rod 601 is reduced. As the moving frame 202 continues to move, the first adjusting spring 603 is compressed, and the third rotating frame 607 is controlled to rotate, which moves the second support 604 up, and the third return spring 606 is stretched, so that the pressing wheel 605 is close to the material moving roller 502. When the upper die 203 moves to the limit position close to the lower die 205 and performs the die closing process, the first adjusting spring 603 is compressed to the limit state, and the third rotating frame 607 applies pressure to the pressing wheel 605. The pressing wheel 605 increases the friction between the copper strip and the material moving roller 502 by applying pressure to the material moving roller 502, and the material moving roller 502 does not rotate in the process, so as to keep the copper strip position stable and improve the stamping quality of the copper strip. Conversely, the moving frame 202 moves up, the first adjusting spring 603 recovers, and drives the pressing strip 602 to move up and reset. After the pressing strip 602 moves up, it is out of contact with the third rotating frame 607. The third return spring 606 moves the second support 604 down to reset, and the third rotating frame 607 is reversed to reset. In the above process, when the first adjusting spring 603 begins to recover from elastic deformation, it will no longer apply a pressing force to the copper strip through the pressing wheel 605. Then, the ratchet wheel 508 rotates to quantitatively move the copper strip, and the pressing wheel 605 rotates to assist the movement of the copper strip.

[0038] As Figure 1 , Figure 2 and Figure 11Also shown, further comprising: a second positioning mechanism 7 arranged on the mounting frame 1, each of the punching mechanisms 2 is provided with a group of second positioning mechanisms 7 on the left and right sides, the second positioning mechanism 7 positions the copper strip on both sides of the punching mechanism 2, further improves the accuracy of the position of the copper strip during processing, the second positioning mechanism 7 comprises: a pressing rod 701 fixedly installed on the side of the moving frame 202; a third support 702 fixedly installed on the lower side plate of the support frame 102, the third support 702 is arranged on the side of the punching mechanism 2; two upper and lower pressing plates 703 slidingly installed on the third support 702, the two pressing plates 703 are vertically displaced, a spring for resetting is fixed between the two pressing plates 703, not shown in the figure; a pad 704 fixedly installed on the upper pressing plate 703, the pad 704 is matched with the pressing rod 701, the moving frame 202 moves downward, and the pressing rod 701 is in contact with the pad 704, and the upper pressing plate 703 is lowered synchronously; a toothed plate 705 fixedly installed on the front and rear ends of the upper and lower pressing plates 703; a gear 706 rotatably installed on the front and rear ends of the third support 702, each gear 706 is engaged with the upper and lower toothed plates 705 on the corresponding side end, and synchronous and reverse displacement of the upper and lower pressing plates 703 is realized; an adjusting column 707 slidingly installed on the pressing plate 703, the adjusting column 707 is arranged in a row along the length direction of the pressing plate 703; and a second adjusting spring 708 fixedly installed between the pressing plate 703 and the adjusting column 707, the second adjusting spring 708 is sleeved on the adjusting column 707.

[0039] During the downward movement of the moving frame 202, when the pressing rod 701 moves to contact the pad 704, the upper pressing plate 703 is lowered by the pad 704, the lower pressing plate 703 is synchronously raised through the transmission of the gear 706 and the toothed plate 705, the two pressing plates 703 are close to clamp and fix the copper strip, the second adjusting spring 708 changes the position of the adjusting column 707 through self-adaptive change, so that the pressing plate 703 can be suitable for copper strips of different thicknesses, and the restoring tendency of the second adjusting spring 708 can ensure the positioning effect of the pressing plate 703 and the adjusting column 707 on the copper strip; when the punching is completed, the moving frame 202 is raised to reset, the pressing rod 701 is disengaged from the pad 704, and the spring between the pressing plates 703 resets the upper and lower pressing plates 703.

[0040] The above merely describes the embodiments of the present application and is not used to limit the present application. Any equivalent replacement within the principles of the present application shall be included in the protection scope of the present application. The contents not described in detail in the present application belong to the prior art known by those skilled in the art.

Claims

1. A stamping die for a wire harness terminal stamping equipment, comprising: The mounting frame (1) consists of a support frame (102) and a base plate (103); And a stamping mechanism (2) mounted on the mounting frame (1); the stamping mechanism (2) includes: a movable frame (202) slidably connected to the support frame (102); an upper die (203) fixedly connected to the movable frame (202); a lower die (205) slidably connected to the support frame (102), wherein the upper die (203) and the lower die (205) are in mold-closing contact to apply pressure to the copper strip for stamping; and a hydraulic press (206) fixedly connected to the support frame (102) to control the movement of the upper die (203); The feature is that it further includes: a control mechanism (3) disposed on the mounting frame (1), the control mechanism (3) cooperating with the stamping mechanism (2) to control the lower mold (205) and the upper mold (203) to stamp the copper strip; the control mechanism (3) includes: a wedge block (301) fixedly connected to the movable frame (202), the wedge block (301) having an inclined surface (301a) on the side near the upper mold (203) and the lower mold (205); fixedly connected to the support frame (102) The first support (302) is rotatably connected to the first support (302), and one end of the first rotating frame (303) is slidably connected to the lower mold (205); a roller (304) is rotatably connected to the other end of the first rotating frame (303), and the first rotating frame (303) will contact the wedge block (301) through the roller (304) during the movement of the wedge block (301); a first return spring (305) is fixedly connected between the lower mold (205) and the base plate (103). A vertical surface (301b) is provided on one side of the wedge block (301) near the upper mold (203) and the lower mold (205), and the vertical surface (301b) is located above the inclined surface (301a); it also includes: a support mechanism (4) provided on the mounting frame (1), the support mechanism (4) is used to provide stable support for the lower mold (205) when the mold is closed, the support mechanism (4) includes: a plug rod (401) slidably connected in the support frame (102); a second return spring (402) fixedly connected between the plug rod (401) and the support frame (102); the lower mold (205) is provided with a socket (403), and the plug rod (401) is inserted into the socket (403); a second rotating frame (404) is rotatably connected to the support frame (102), the upper end of the second rotating frame (404) is in contact with the plug rod (401), and the lower end of the second rotating frame (404) is provided with an oblique contact surface. During the movement of the wedge block (301), the wedge block (301) will contact the oblique contact surface of the second rotating frame (404); a first reset torsion spring (405) is fixedly connected between the second rotating frame (404) and the support frame (102).

2. The stamping die of the wire harness terminal stamping equipment as described in claim 1, characterized in that: The lower mold (205) has a positioning hole (403a), which is located above the insertion hole (403). The positioning hole (403a) has an arc surface that mates with the end of the insertion rod (401).

3. The stamping die of the wire harness terminal stamping equipment as described in claim 2, characterized in that: Also includes: A material transfer mechanism (5) is installed on the mounting frame (1). The material transfer mechanism (5) includes: a guide frame (501) fixedly connected to the support frame (102); a material transfer roller (502) rotatably connected to the inner wall of the guide frame (501); grooves on the material transfer roller (502) to increase the coefficient of friction; the material transfer roller (502) contacts the copper strip and controls the displacement of the copper strip by rotation; and an auxiliary roller (503) rotatably connected to the guide frame (501). The auxiliary roller (503) is provided with... On the side of the guide frame (501) that contacts the copper strip; a moving bar (504) fixedly connected below the moving frame (202); a pawl (506) rotatably connected to the moving bar (504), the pawl (506) can only rotate to one side; a second reset torsion spring (507) fixedly connected between the pawl (506) and the moving bar (504); a ratchet (508) rotatably connected to the guide frame (501), the ratchet (508) and the transfer roller (502) being fixedly coaxially.

4. The stamping die of the wire harness terminal stamping equipment as described in claim 3, characterized in that: Also includes: A first positioning mechanism (6) is provided on the mounting frame (1). The first positioning mechanism (6) includes: a pressing strip (602) slidably connected to the movable frame (202); a first adjusting spring (603) fixedly connected between the pressing strip (602) and the movable frame (202); a second support (604) slidably connected to the support frame (102), the second support (604) being located below the transfer roller (502); and a pressing wheel (605) rotatably connected to the second support (604). The second support (604) moves, moving the control pressing wheel (605) to be close to the transfer roller (502), and the two cooperate to clamp and fix the copper strip; the third return spring (606) is fixedly connected between the second support (604) and the support frame (102); the third rotating frame (607) is rotatably connected to the support frame (102), one end of the third rotating frame (607) is slidably connected to the second support (604), and the displacement of the pressing bar (602) will contact the other end of the third rotating frame (607).

5. The stamping die of the wire harness terminal stamping equipment as described in claim 4, characterized in that: Also includes: A second positioning mechanism (7) is provided on the mounting frame (1). The second positioning mechanism (7) is located on both sides of the stamping mechanism (2). The second positioning mechanism (7) includes: a pressure rod (701) fixedly connected to the side of the movable frame (202); a third support (702) fixedly connected to the support frame (102). The third support (702) is located on the side of the upper mold (203) and the lower mold (205); and two upper and lower pressing plates (703) slidably connected to the third support (702). The two pressing plates (703) are vertically displaced. A spring for resetting is fixed between the two pressing plates (703); a pad (704) is fixedly connected to the upper pressing plate (703), the pad (704) is adapted to the pressure rod (701), and the pressure rod (701) can move to contact the pad (704); a toothed plate (705) is fixedly connected to the upper and lower pressing plates (703); a gear (706) is rotatably connected to the third support (702), the gear (706) meshes with the upper and lower toothed plates (705), and controls the upper and lower pressing plates (703) to move synchronously and in opposite directions.

6. The stamping die of the wire harness terminal stamping equipment as described in claim 5, characterized in that: The second positioning mechanism (7) further includes: an adjusting column (707) slidably connected to the pressing plate (703), the adjusting column (707) being arranged in a row along the length direction of the pressing plate (703); and a second adjusting spring (708) fixedly connected between the pressing plate (703) and the adjusting column (707).

7. The stamping die of the wire harness terminal stamping equipment as described in claim 6, characterized in that: The stamping mechanism (2) will be set up with no less than one set according to the stamping process. Each set of stamping mechanisms (2) will be arranged in an equally spaced manner. The number of sets of control mechanism (3), support mechanism (4), material transfer mechanism (5), first positioning mechanism (6) and second positioning mechanism (7) will be configured proportionally according to the number of stamping mechanisms (2). Among them, the guide frame (501) of all material transfer mechanisms (5) adopts an integrated design, and the total length of the pawl (506) is consistent with the spacing between the two adjacent sets of stamping mechanisms (2).

Images