A wire clamp blanking device

Abstract

The application provides a wire clamp punching device, which comprises a fixed lower die and a movable upper die, the front side of the lower die is provided with a positioning part, the lower side of the upper die is provided with a groove corresponding to the lower die and allowing the lower die to enter, the groove penetrates through the front side of the upper die, a movable pressing block is adaptively connected in the groove, the upper side of the pressing block is provided with a reset part for resetting the upward movement of the pressing block, the left and right sides of the front end of the lower die are respectively provided with first guide parts, and the rear side of the first guide part is a guide surface with a gradually decreasing height from front to back. The cut-off waste is stacked on the left and right sides and the front side of the lower die, moves downward under the downward punching force, moves backward under the guidance of the guide surface, and gradually expands and moves backward under the guidance of the second guide part.

Description

Technical Field

[0001] This invention relates to the field of metal stamping technology, and more specifically to a wire clamp stamping device. Background Technology

[0002] Compression clamps are electrical fittings in power systems that use hydraulic or explosive compression processes to deform and press the metal tube and conductor (or ground wire) together, and are used for anchoring, splicing, or connecting conductors or equipment.

[0003] refer to Figure 1 As shown, this is an existing type of aluminum compression clamp, which consists of a tubular part and a plate-like part.

[0004] During product manufacturing, the semi-finished product needs to be punched to remove the excess parts of the plate-shaped portion.

[0005] semi-finished products such as Figure 2 and Figure 3 As shown, where Figure 3 The shaded areas on the plate-like portion indicate the parts that need to be removed.

[0006] When punching and cutting semi-finished products, the semi-finished products are usually placed on the lower die, and the lower die moves downward to cut the semi-finished products on the upper die.

[0007] In continuous cutting operations, how to discharge the waste material that has been cut off is a problem that needs to be solved. Summary of the Invention

[0008] In view of the problems pointed out in the background art, the present invention proposes a wire clamp punching device to solve the above-mentioned technical problems.

[0009] The technical solution of this invention is implemented as follows: A wire clamp punching device includes a fixedly mounted lower die and an upper die that can move up and down. The lower mold is provided with a positioning part on its front side; The lower side of the upper mold is provided with a groove corresponding to the lower mold and allowing the lower mold to enter. The groove extends through the front side of the upper mold. A pressure block that can move up and down is adapted to be connected in the groove. A reset member is provided on the upper side of the pressure block to reset it after it moves upward. The front end of the lower mold is provided with a first guide part on the left and right sides respectively, and the rear side of the first guide part is a guide surface whose height gradually decreases from front to back.

[0010] The present invention is further configured such that the left and right sides and the rear side of the lower mold are respectively provided with a second guide portion whose thickness gradually increases from top to bottom.

[0011] The present invention is further configured such that the upper end of the second guide portion is lower than the upper side surface of the lower mold.

[0012] The present invention is further configured such that, in the front-rear direction, the upper end of the first guide portion is located on the front side of the upper mold, and the upper end of the first guide portion is flush with the upper side surface of the lower mold.

[0013] The present invention is further configured such that an arc-shaped positioning groove is provided on the upper side of the positioning part, and the positioning groove is provided through the front and rear sides of the positioning part.

[0014] The invention is further configured to include a forward-extending screw, on which a long strip-shaped positioning bar is vertically connected. The positioning bar can be adjusted in position along the length of the screw and can be rotated around the screw to adjust its angle.

[0015] The present invention is further configured such that two nuts are threadedly connected to the screw, and the two nuts are respectively located on both sides of the positioning strip.

[0016] The invention is further configured to include an upper seat and a lower seat, which are arranged vertically. The lower mold and the positioning part are fixedly installed on the upper side of the lower seat, and the upper mold is fixedly installed on the lower side of the upper seat. Positioning rods are provided on the left and right sides of the lower seat, and a positioning tube coaxial with the positioning rods is provided on the upper seat. The screw is fixedly connected to the lower seat.

[0017] The invention is further configured such that the reset component is a spring, the left and right sides of the pressure block are respectively provided with limiting parts, the left and right side walls of the groove are respectively provided with limiting grooves, the limiting grooves are arranged in the vertical direction, and the limiting parts and the limiting grooves slide in a vertical fit; a fixing block is provided between the lower mold and the upper seat, multiple guide rods are vertically provided on the upper side of the pressure block, the fixing block is provided with guide holes corresponding to the guide rods on the same axis, some guide rods are sleeved with springs, and the upper and lower ends of the springs abut against the fixing block and the pressure block respectively.

[0018] The present invention is further configured such that the lower mold is a rectangular structure.

[0019] By adopting the above technical solution, the beneficial effects of the present invention are as follows: The wire clamp punching device provided by this invention performs punching operations on products through the cooperation of a lower die and an upper die. During the punching operation, the semi-finished product is placed on the lower die, with the plate-shaped part of the semi-finished product placed on the upper side of the lower die and the tubular part placed on the positioning part. The positioning part positions the semi-finished product to ensure accurate punching position.

[0020] After the product is placed, the upper mold moves downward and the lower mold enters the groove in the upper mold. The pressure block presses and fixes the semi-finished product. The upper mold at the edge of the groove punches and cuts off the left, right and front sides of the semi-finished product. After one punching is completed, the upper mold moves upward and resets.

[0021] The cut-off waste material forms a U-shaped structure that surrounds the left, right, and front sides of the lower die. Under the action of the upper die, the waste material moves downwards while still encircling the lower die. During this downward movement, it is guided by the guiding surface of the first guiding part, gradually moving towards the rear of the lower die. As the cut-off waste material gradually moves downwards, the upper waste material squeezes the lower waste material downwards, and the waste material, guided by the guiding surface, gradually moves backwards.

[0022] The left, right and rear sides of the lower die are provided with second guide parts whose thickness gradually increases from top to bottom. As the waste moves downward, it is guided by the second guide parts. The middle part of the U-shaped waste will move to the rear side of the lower die, and the left and right sides of the U-shaped waste will gradually deform outward.

[0023] In this way, the cut-off waste material is stacked on the left and right sides and the front side of the lower die, and under the downward punching force, it gradually moves downward, gradually moves backward under the guidance of the guide surface, and gradually undergoes opening deformation and moves backward under the guidance of the second guide part.

[0024] The lower die is fixedly installed on the lower base body, stacking the waste material that moves downward and backward. The lower side is restricted by the lower base body, so that the waste material eventually moves backward and is discharged, completing the waste material discharge of the continuous punching operation. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the finished aluminum compression clamp of the present invention.

[0027] Figure 2 This is a schematic diagram of the structure of the aluminum compression clamp semi-finished product of the present invention. Figure 1 .

[0028] Figure 3 This is a schematic diagram of the structure of the aluminum compression clamp semi-finished product of the present invention. Figure 2 .

[0029] Figure 4 This is a schematic diagram of the punching device of the present invention.

[0030] Figure 5 This is a schematic diagram of the structure of the lower mold of the present invention. Figure 1 .

[0031] Figure 6 This is a schematic diagram of the structure of the lower mold of the present invention. Figure 2 .

[0032] Figure 7 This is a schematic diagram of the upper mold of the present invention.

[0033] Figure 8 This is a cross-sectional view of the upper mold of the present invention.

[0034] Figure 9 This is a cross-sectional view of the lower mold of the present invention.

[0035] The following are the labels in the attached drawings: lower mold 1, upper mold 2, positioning part 3, groove 4, pressure block 5, reset part 6, first guide part 7, guide surface 8, second guide part 9, positioning groove 10, screw 11, positioning strip 12, nut 13, upper seat 14, lower seat 15, positioning rod 16, positioning tube 17, limiting part 18, limiting groove 19, fixing block 20, guide rod 21. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] For reference as follows Figures 1-9 The present invention will be described as follows: Example: A wire clamp punching device includes a fixed lower die 1 and an upper die 2 that can move up and down.

[0038] The blanking execution structure of this wire clamp blanking device consists of a fixed lower die 1 and an upper die 2 that can move vertically up and down. The two are the cooperating parts for blanking operations. The lower die 1 adopts an integral rectangular structure and serves as the basic carrier for workpiece support, positioning, and waste material guidance.

[0039] The upper mold 2 relies on a vertical moving power structure to achieve reciprocating lifting and lowering, and works with the lower mold 1 to complete the waste material punching and cutting operation of the wire clamp semi-finished product.

[0040] A drive device is installed on the equipment frame to drive the upper mold 2 to move up and down. The drive device can be a hydraulic cylinder.

[0041] The overall support and positioning structure of the device includes an upper base 14 and a lower base 15 arranged correspondingly to provide a fixed installation reference for each functional component.

[0042] The lower mold 1 and the positioning part 3 are fixedly installed on the upper side of the lower base 15 by bolts or welding, keeping their positions fixed and without displacement.

[0043] The upper mold 2 is fixedly installed on the lower side of the upper base 14 and moves up and down synchronously with the upper base 14.

[0044] To ensure the alignment accuracy of the upper die 2 and the lower die 1 during punching, positioning rods 16 are vertically fixed on the left and right sides of the lower base 15, and positioning tubes 17 that are coaxially matched with the positioning rods 16 are assembled at the corresponding positions on the upper base 14. During the punching operation, the positioning rods 16 and the positioning tubes 17 slide together to limit the horizontal offset of the upper die 2 and ensure the alignment stability of the upper and lower dies.

[0045] To achieve multi-dimensional precise positioning of the wire clamp semi-finished product and avoid the problem of blanking deviation, the device is equipped with a positioning part 3 on the front side of the lower die 1 to limit and fix the workpiece in three directions: up and down, left and right, and front and back, so as to ensure the accuracy of blanking dimensions.

[0046] The upper side of the positioning part 3 is provided with an arc-shaped positioning groove 10. The positioning groove 10 runs through the front and rear sides of the positioning part 3 in the front-back direction. The arc curvature of the positioning groove 10 matches the outer circle size of the tubular part of the wire clamp semi-finished product, so as to realize the fitting and limiting of the tubular part.

[0047] During operation, the flat plate-shaped part of the aluminum wire clamp semi-finished product is laid flat on the upper side plane area of ​​the lower mold 1; the tubular embedded part of the semi-finished product is engaged and placed inside the positioning groove 10. The left and right displacement of the tubular part is restricted by the side wall of the positioning groove 10, and the downward displacement of the tubular part is restricted by the arc surface at the bottom of the groove, thus completing the precise positioning of the workpiece in the left and right and up and down dimensions.

[0048] To achieve positioning of the workpiece in the front-to-back direction, the device is equipped with a forward-extending screw 11, which is fixedly connected to the lower seat 15 to maintain the overall stability of the front positioning structure.

[0049] The screw 11 is vertically inserted through the long strip-shaped positioning strip 12. The positioning strip 12 has a hole for connecting with the screw 11. Two nuts 13 are threaded onto the body of the screw 11. The two nuts 13 are symmetrically arranged on the front and rear sides of the positioning strip 12 to form a two-way locking positioning structure.

[0050] This positioning structure has a bidirectional adjustment function: First, the position can be adjusted in the front and back direction. After loosening the nuts 13 on both sides, the positioning strip 12 can slide along the length direction (front and back direction) of the screw 11 to adjust the front and back positioning distance.

[0051] Secondly, the angle can be adjusted. The positioning bar 12 can rotate around the axis of the screw 11 and rotate to the position corresponding to the axis of the positioning groove 10.

[0052] Once the position and angle of the positioning strip 12 are adjusted to the appropriate position, tighten the nuts 13 on both sides simultaneously. Through the squeezing friction between the nuts 13 and the end face of the positioning strip 12, the position and angle of the positioning strip 12 are locked to prevent displacement during operation.

[0053] When the workpiece is fully positioned, the front end face of the semi-finished tubular part is in close contact with the rear side of the positioning strip 12. The positioning strip 12 positions the workpiece in the front-back direction, thus achieving all-round positioning of the wire clamp semi-finished product in three dimensions: up and down, left and right, and front and back, ensuring the positional accuracy of the punching process from a structural perspective.

[0054] The lower side of the upper mold 2 is provided with a groove 4 that corresponds to the lower mold 1 and allows the lower mold 1 to enter. The groove 4 is set through the front side of the upper mold 2, and the internal contour and size of the groove 4 are precisely matched with the rectangular external contour of the lower mold 1. When the upper mold 2 moves downward to complete the punching, the lower mold 1 can be completely embedded in the groove 4, so as to achieve precise mold closing and cooperation between the upper and lower molds.

[0055] The internal cavity of the groove 4 is equipped with a pressure block 5 that can slide up and down independently. The pressure block 5 is a rectangular block structure and is adapted to and connected to the groove 4.

[0056] The upper side of the pressure block 5 is equipped with a reset component 6, which adopts a spring structure to provide the pressure block 5 with a reset driving force after it moves down.

[0057] In the initial non-operational state, the reset piece 6 is in a naturally extended state, and the lower side of the pressure block 5 is at the same level as the lower side of the upper mold 2, with no height difference.

[0058] To limit the sliding trajectory of the pressure block 5 and prevent horizontal deviation, the left and right sides of the pressure block 5 are integrally formed with limiting parts 18. The left and right side walls of the groove 4 are respectively opened with vertically arranged limiting grooves 19. The limiting grooves 19 extend in the vertical direction and penetrate the upper side of the upper mold 2. The limiting parts 18 of the pressure block 5 are embedded in the limiting grooves 19 to form a vertical sliding fit structure, which only allows the pressure block 5 to move vertically in a straight line along the limiting grooves 19, thus completely limiting the horizontal displacement and rotational deviation of the pressure block 5.

[0059] In the initial state, the limiting part 18 abuts against the bottom of the limiting groove 19.

[0060] A fixing block 20 is fixedly assembled between the upper mold 2 and the upper base 14 (the fixing block 20 is fixedly connected to the upper base 14 by bolts or welding). The fixing block 20 provides an installation reference for the reset structure.

[0061] Multiple guide rods 21 are vertically fixed on the upper side of the pressure block 5. The fixing block 20 has guide holes that are coaxially matched with the guide rods 21 at the corresponding positions. The guide rods 21 are set through the guide holes to further improve the straightness of the pressure block 5 moving up and down.

[0062] Among them, a reset spring is sleeved on the body of part of the guide rod 21. The upper end of the spring abuts against the lower side of the fixing block 20, and the lower end abuts against the upper side of the pressure block 5, forming a complete reset component 6 structure.

[0063] The single punching operation process is as follows: The upper body 14 drives the upper die 2 to move downward as a whole. When the lower side of the upper die 2 and the pressure block 5 comes into contact with the surface of the semi-finished workpiece after positioning, the workpiece forms an upward supporting resistance on the pressure block 5. As the upper die 2 continues to move downward, the pressure block 5 remains stationary. The guide rod 21 slides upward along the guide hole of the fixed block 20. The spring structure of the reset piece 6 is compressed and stores force. The pressure block 5 is always pressed against the surface of the workpiece, realizing the pressing and fixing of the workpiece during the punching process and preventing the workpiece from loosening, displacing, or warping.

[0064] As the upper die 2 continues to move downward, the edge of the groove 4 contacts the excess waste material of the workpiece on the outer edge of the lower die 1. Through the rigid extrusion and shearing force of the upper and lower dies, the excess material on the left and right sides and the front side of the workpiece is punched off.

[0065] After the blanking operation is completed, the upper seat 14 drives the upper die 2 to move upward and separate from the workpiece. The pressure block 5 loses the downward pressure of the upper die 2. Under the elastic reset force of the spring of the reset piece 6, the pressure block 5 and the guide rod 21 are driven to reset downward and return to the initial flat state, thus completing a single blanking cycle.

[0066] The waste material cut off by this device is a U-shaped integrated structure. After the waste material is formed, it surrounds and covers the left, right and front sides of the lower die 1.

[0067] In continuous punching operation, the new U-shaped scrap generated by each punching will move downward under the punching force and stack on top of the scrap generated by the previous punching, forming a multi-layered stack of scrap. All the stacked scrap continuously surrounds the outside of the lower die 1.

[0068] To achieve automatic displacement and discharge of waste materials, the left and right side walls of the front end of the lower mold 1 are integrally formed with first guide parts 7. The rear side of the first guide part 7 is an inclined guide surface 8. The height of the guide surface 8 gradually decreases from front to back, forming an inclined structure that is high in the front and low in the back.

[0069] In terms of front-back orientation, the upper surface of the first guide part 7 is flush with the upper side of the lower die 1, and the upper part is located in the front area of ​​the upper die 2. This structural layout can completely avoid structural collision between the upper die 2 and the first guide part 7 when the upper die 2 punches downwards, ensuring the safety and smoothness of the punching operation.

[0070] During the downward pressing and movement of the waste material, the front end of the waste material continuously abuts against the guide surface 8 of the first guide part 7. Under the guidance of the inclined structure, the vertically downward moving waste material will simultaneously generate a backward horizontal displacement, realizing the backward offset during the downward movement of the waste material.

[0071] At the same time, the continuously stacked upper layer of waste will exert a continuous downward squeezing force on the lower layer of waste, strengthening the adhesion between the lower layer of waste and the guide surface 8, and ensuring that each layer of stacked waste can be stably shifted backward.

[0072] The left, right, and rear sides of the lower mold 1 are all integrally formed with a second guide portion 9. The thickness of the second guide portion 9 gradually increases from top to bottom, forming a gradient structure that is narrower at the top and wider at the bottom.

[0073] The height of the upper end face of the second guide part 9 is lower than the height of the upper end face of the lower die 1. This structural design ensures that the brand-new scrap material that has just been punched is located in the area above the second guide part 9 and will not come into contact with the second guide part 9. The two sides of the brand-new scrap material maintain their initial forming state and no deformation occurs.

[0074] As the scrap material continues to move downwards during the stamping operation, it enters the coverage area of ​​the second guide section 9, and the inner wall of the scrap material comes into contact with the gradually changing outer wall of the second guide section 9. Under the structural guidance of the second guide section 9, whose thickness increases from top to bottom, the middle area of ​​the U-shaped scrap material continues to shift backwards. At the same time, the left and right arms of the U-shaped scrap material are subjected to outward supporting forces, and gradually undergo outward deformation, changing the initial tight state of the scrap material and completely releasing the tight gripping force between the scrap material and the outer wall of the lower die 1.

[0075] The waste material, which was stacked down, gradually moved backward and opened up and deformed, was blocked by the vertical limit of the upper surface of the lower seat 15 at the bottom and could not continue to move downward.

[0076] Under the combined action of continuous upper waste extrusion pressure and the bidirectional guiding force of the first guide part 7 and the second guide part 9, all the stacked waste eventually moves backward and separates from the encircling area of ​​the lower die 1, achieving automated continuous discharge without the need for manual waste cleaning, thus ensuring the continuity of continuous punching operations.

[0077] The device uses the lower die 1 to support the plate-shaped part of the workpiece and the positioning groove 10 of the positioning part 3 to support the tubular part of the workpiece, thereby achieving positioning of the workpiece in the up-down and left-right directions. Through the adjustable screw 11 and positioning bar 12 structure, the device achieves precise positioning of the workpiece in the front-back direction, effectively ensuring the positional accuracy of each punching operation and reducing the scrap rate.

[0078] During the punching process, the pressure block 5 is always pressed and fixed to the workpiece under the action of the reset part 6, which can effectively avoid problems such as loosening, offset, and warping of the workpiece during the punching process. With the help of the multiple limiting and guiding structure of the limiting part 18, the limiting groove 19, and the guide rod 21, the pressure block 5 is guaranteed to run stably without offset or jamming, which improves the flatness of the scrap cut and the forming quality of the workpiece.

[0079] By cooperating with the guide surface 8 of the first guide part 7 and the gradual structure of the second guide part 9, the U-shaped waste material gradually completes the backward displacement and the opening deformation on both sides during the downward stacking process, releasing the tight state between the waste material and the lower die 1. With the bottom limit of the lower seat 15, the waste material is automatically discharged backward without the need for manual intervention, which greatly improves the efficiency of continuous punching operations and is suitable for the needs of mass production on the assembly line.

[0080] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A wire clamp punching device, comprising a fixedly disposed lower die and an upper die movable up and down, characterized in that: The lower mold is provided with a positioning part on its front side; The lower side of the upper mold is provided with a groove corresponding to the lower mold and allowing the lower mold to enter. The groove extends through the front side of the upper mold. A pressure block that can move up and down is adapted to be connected in the groove. A reset member is provided on the upper side of the pressure block to reset it after it moves upward. The left and right sides of the front end of the lower mold are integrally formed with a first guide part, and the rear side of the first guide part is a guide surface whose height gradually decreases from front to back; The left, right, and rear sides of the lower mold are integrally formed with a second guide portion whose thickness gradually increases from top to bottom.

2. The wire clamp punching device according to claim 1, characterized in that: The upper end of the second guide portion is positioned below the upper side surface of the lower mold.

3. The wire clamp punching device according to claim 1, characterized in that: In the front-back direction, the upper end of the first guide is located on the front side of the upper mold, and the upper end of the first guide is flush with the upper side of the lower mold.

4. The wire clamp punching device according to claim 1, characterized in that: The upper side of the positioning part is provided with an arc-shaped positioning groove, which runs through the front and rear sides of the positioning part.

5. A wire clamp punching device according to claim 4, characterized in that: It also includes a forward-extending screw with a long, rectangular positioning bar vertically connected to it. The positioning bar can be adjusted in position along the length of the screw and can be rotated around the screw to adjust its angle.

6. The wire clamp punching device according to claim 5, characterized in that: The screw has two nuts threaded onto it, with the two nuts located on either side of the positioning strip.

7. A wire clamp punching device according to claim 4, characterized in that: It also includes an upper seat and a lower seat, which are arranged vertically. The lower mold and the positioning part are fixedly installed on the upper side of the lower seat, and the upper mold is fixedly installed on the lower side of the upper seat. Positioning rods are provided on the left and right sides of the lower seat, and a positioning tube coaxial with the positioning rod is provided on the upper seat. The screw is fixedly connected to the lower seat.

8. A wire clamp punching device according to claim 7, characterized in that: The reset component is a spring. Limiting parts are provided on the left and right sides of the pressure block, and limiting grooves are provided on the left and right side walls of the groove. The limiting grooves are set in the vertical direction, and the limiting parts and limiting grooves slide in a vertical fit. A fixing block is provided between the lower mold and the upper seat. Multiple guide rods are vertically provided on the upper side of the pressure block. The fixing block is provided with guide holes coaxial with the guide rods. Springs are sleeved on some of the guide rods, and the upper and lower ends of the springs abut against the fixing block and the pressure block, respectively.

9. A wire clamp punching device according to claim 1, characterized in that: The lower mold is a rectangular structure.

Images