Punching equipment for two ends of pressed metal rod type blank

Abstract

The utility model belongs to the technical field of punching equipment, and particularly relates to two-end punching equipment for pressing a metal rod piece type blank. Punching equipment for two ends of a pressed metal rod piece type blank comprises a feeding mechanism, a punching mechanism and a clamping mechanism, the feeding mechanism is used for conveying a pressed metal rod piece type blank workpiece to the clamping mechanism, the punching mechanism comprises two punching assemblies which are symmetrically arranged, and the punching assemblies can move close to or away from the clamping mechanism. The clamping mechanism comprises two clamping arms used for clamping or loosening the pressed metal rod piece type blank workpiece, and the two clamping arms are connected in a hinged mode. The hinged position of the clamping arms is fixed to a movable block, fixed blocks are arranged on the two sides of the movable block, and first elastic pieces are arranged between the two transverse sides of the movable block and the fixed blocks. The punching device has the advantages that vibration can be buffered when a pressed metal rod piece type blank piece is punched, and therefore the pressed metal rod piece type blank piece is prevented from being damaged.

Description

Technical Field

[0001] The utility model belongs to the technical field of punching equipment, in particular to a device for punching holes at both ends of a pressed metal rod blank. Background Art

[0002] When processing metal rods, it is necessary to first put metal powder into wax and press it into metal rod blanks, and then sinter the metal rod blanks into metal. Since the recovery value of the abrasives ground off before metal sintering is higher than the recovery value of the abrasives ground off after sintering into metal, it is usually rough-processed by drilling holes at both ends of the metal rod blanks to save processing costs.

[0003] Chinese patent application number 201010209607.2 discloses a mechanical device for punching holes at both ends, which inserts the workpiece from the main chuck into the spindle until it is locked in a three-claw positioning ring at the left end of the spindle.

[0004] Chinese patent application number 202022770765.7 discloses a quick positioning clamping device for punching holes at both ends of a circular shaft, which presses the workpiece onto a positioning base through a pressure plate.

[0005] Both of the above solutions completely press or lock the workpiece so that it cannot move during the drilling process. However, the workpiece will vibrate during the drilling process. When the workpiece is a pressed metal rod blank, the pressed metal rod blank is relatively fragile and cannot buffer the vibration when pressed or locked, which may cause damage to the pressed metal rod blank. Utility Model Content

[0006] The utility model aims to provide a device for punching holes at both ends of a pressed metal rod blank, which can buffer vibration when the pressed metal rod blank is punched, thereby avoiding damage to the pressed metal rod blank.

[0007] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a device for punching holes at both ends of a pressed metal rod blank, comprising a feeding mechanism, a punching mechanism and a clamping mechanism, wherein the feeding mechanism is used to feed the pressed metal rod blank workpiece to the clamping mechanism, the punching mechanism comprises two symmetrically arranged punching components, the punching components can move towards or away from the clamping mechanism, the clamping mechanism comprises two clamping arms for clamping or releasing the pressed metal rod blank workpiece, the two clamping arms are hingedly connected; the hinge of the clamping arm is fixed on a moving block, fixed blocks are provided on the lateral sides of the moving block, and a first elastic member is provided between the lateral sides of the moving block and the fixed block; during the punching process, the moving block buffers the vibration under the action of the first elastic member.

[0008] During punching, the feeding mechanism delivers the pressed metal rod blank workpiece to the clamping mechanism, the clamping mechanism clamps the pressed metal rod blank workpiece, and then the punching assembly approaches the pressed metal rod blank workpiece and performs rough punching on the pressed metal rod blank workpiece.

[0009] The punching assembly may be any existing device that can perform rough punching processing on a pressed metal rod-like blank workpiece, such as a milling cutter assembly.

[0010] The feeding mechanism may be any existing feeding device that can feed pressed metal rod blank workpieces.

[0011] The first elastic member may be directly welded between the moving block and the fixed block.

[0012] This solution arranges two clamping arms on a moving block, and the moving block can move laterally under the action of the first elastic member, so that when the punching assembly punches holes in the pressed metal rod blank workpiece, the moving block can make the two clamping arms move laterally in an adaptive manner with the vibration, which can offset most of the vibration and buffer the vibration, thereby not damaging the pressed metal rod blank workpiece.

[0013] Preferably, a first guide rod is provided between the fixed block and the movable block, the first guide rod passes through the fixed block horizontally and slidably cooperates with the fixed block, one end of the first guide rod is fixed to the movable block, and the first elastic member is sleeved on the outer side of the first guide rod.

[0014] The first guide rod is provided to fix the moving track of the moving block, thereby preventing the first elastic member from moving too much.

[0015] Preferably, the lower end of the clamping arm is the clamping end, and the upper end is the driving end; the driving ends of the two clamping arms are provided with a clearance groove which penetrates horizontally and extends vertically, the second guide rod passes through the clearance groove and the two ends of the second guide rod are fixed to the fixed block, and a second elastic member sleeve is sleeved on the outer side of the second guide rod, and the second elastic member is located between the clamping arm and the fixed block; the driving ends of the two clamping arms are closed inwardly under the action of the second elastic member to clamp the clamping ends.

[0016] Since the nature of pressed metal rod blanks is relatively fragile, the clamping end is clamped by the second elastic member. This clamping is elastic clamping, which is better than rigid clamping. At the same time, the second elastic member can make the driving end of the clamp arm move laterally accordingly with the movement of the moving block. If the existing cylinder clamp is used, it is impossible to achieve the corresponding lateral movement. Among them, since the movement trajectory of the clamp arm is arc-shaped, it is necessary to set a vertically extending clearance groove for clearance to ensure that the clamp arm can move, and the vertical width of the clearance groove is greater than the diameter of the second guide rod.

[0017] Preferably, the driving end of the clamp arm is equipped with a driving member, and the driving member performs vertical lifting movement through a first lifting driver. The width of the driving member gradually decreases from top to bottom, and the driving end of the clamp arm is provided with a linkage member in contact with the driving member; when the driving member descends, the driving end of the clamp arm opens outward to open the clamping end of the clamp arm.

[0018] The driving member can be lifted and moved vertically so that the driving member can be completely away from the clamping arm, thereby not affecting the lateral movement of the clamping arm and not causing interference. At the same time, after the processing of the pressed metal rod blank workpiece is completed, the clamping end of the clamping arm can be opened outward to release the pressed metal rod blank workpiece.

[0019] Preferably, the linkage member is rotationally connected to the clamp arm, and the cross-section of the circumferential outer edge of the linkage member is circular.

[0020] The circular linkage part can rotate, which can reduce the friction between the driving part and the driving part, facilitate the vertical movement of the driving part, and avoid scratching each other.

[0021] Preferably, the clamping ends of the two clamping arms are provided with V-shaped grooves facing each other.

[0022] The V-shaped groove can be provided to facilitate the clamping end to be clamped on a blank workpiece such as a pressed metal rod.

[0023] Preferably, the feeding mechanism includes two placement plates which are arranged laterally at intervals and are used to place a number of pressed metal rod-type blank workpieces, and the placement plates are provided with a number of first placement grooves which are open upwards; two feeding plates which are arranged laterally at intervals are provided between the two placement plates, and the feeding plates are provided with a number of second placement grooves which are open upwards; the placement plates and the feeding plates both extend along the feeding direction, and the feeding plates are equipped with a loading drive, which drives the feeding plates to rise above the upper end of the placement plates and drives the feeding plates to move toward the clamping mechanism.

[0024] The operator can place a number of pressed metal rod blanks in the first placement slot of the placement plate, and then the loading driver drives the feed plate to rise above the upper end of the placement plate, so that the pressed metal rod blanks on the placement plate are transferred to the second placement slot of the feed plate, and then the feed plate moves toward the clamping arm, and then the feed plate descends, so that the pressed metal rod blanks return to the placement plate, but the position of the pressed metal rod blanks moves forward one grid and is closer to the clamping arm. Through the above arrangement, the operator only needs to place the pressed metal rod blanks in the first placement slot, and the labor intensity is low.

[0025] Preferably, the fixed block is fixed to the output end of the second lifting drive mechanism, and the second lifting drive mechanism drives the fixed block to move up and down so that the clamping arm moves closer to or away from the feeding mechanism.

[0026] The second lifting drive enables the clamping arm to rise or fall, thereby preventing the feeding plate from hitting the clamping end of the clamping arm when the feeding mechanism is feeding.

[0027] Preferably, the two punching assemblies each comprise a punch, and the output ends of the two punches rotate in opposite directions.

[0028] The output ends of the punching machines rotate in opposite directions so that the rotation of the pressed metal rod blank workpieces can be offset when punching the pressed metal rod blank workpieces.

[0029] The utility model has the following advantages: two clamping arms are arranged on a moving block, and the moving block can move laterally under the action of the first elastic member, so that when the punching assembly punches holes in a pressed metal rod blank workpiece, the moving block can make the two clamping arms move laterally in an adaptive manner with the vibration, which can offset most of the vibration and thus will not damage the pressed metal rod blank workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of the utility model.

[0031] Figure 2 It is a structural schematic diagram of the clamping mechanism.

[0032] Figure 3 for Figure 2 sectional view of .

[0033] Figure 4 It is a structural diagram of the feeding mechanism.

[0034] Figure 5 It is a structural diagram of the feeding mechanism.

[0035] Figure numbers: workbench 1, feeding mechanism 2, placement plate 21, first placement slot 211, feeding plate 22, second placement slot 221, loading driver 3, first loading driver 31, second loading driver 32, punching mechanism 4, slide slot 41, slide plate 42, cylinder 43, clamping mechanism 5, fixed block 51, first lifting driver 52, fixed part 53, second lifting driver 54, moving block 6, first guide rod 61, first elastic member 62, clamping arm 7, clamping end 71, V-shaped groove 711, linkage member 72, give way groove 73, hinge 74, second guide rod 8, second elastic member 81, pressed metal rod-like blank workpiece 100. DETAILED DESCRIPTION

[0036] The utility model is further described below based on the accompanying drawings and specific embodiments.

[0037] like Figure 1 and Figure 2 As shown, this embodiment discloses a punching device for both ends of a pressed metal rod blank, including a workbench 1, on which a feeding mechanism 2, a punching mechanism 4 and a clamping mechanism 5 are arranged. The feeding mechanism 2 delivers the pressed metal rod blank workpiece 100 to the clamping mechanism 5, and the punching mechanism 4 is arranged on the left and right sides of the clamping mechanism 5. The punching mechanism 4 includes punching assemblies symmetrically arranged, and the punching assembly includes punching machines, and the output ends of the two punching machines rotate in opposite directions. The punching assembly is fixed on a slide 42, and a support plate is provided at the lower end of the slide 42, and a slide groove 41 is provided on the support plate. The slide 42 and the slide groove 41 are slidably matched, and a cylinder 43 is provided on the support plate, and the cylinder 43 drives the punching assembly to move closer to or away from the clamping mechanism 5. Among them, the punching assembly can be any existing device that can perform punching processing on the pressed metal rod blank workpiece 100, such as a milling cutter assembly.

[0038] like Figure 2 , Figure 3 and Figure 4As shown, the workbench 1 is provided with a bracket 11 extending upward, and the clamping mechanism 5 is fixed on the bracket 11. The clamping mechanism 5 includes a fixed block 51, and the bracket 11 is provided on one side of the fixed block 51. A second lifting driver 54 is fixed on the bracket 11, and the fixed block 51 is fixed at the output end of the second lifting driver 54. The fixed block 51 can perform vertical lifting movement under the action of the second lifting driver 54. The fixed block 51 is provided with a chamber with a lateral opening and penetrating downwardly through the bottom of the fixed block 51; a moving block 6 is provided in the chamber of the fixed block 51, and the moving block 6 is provided with a receiving groove with a lateral opening and penetrating upward and downward, and the opening direction of the moving block 6 is the same as that of the fixed block 51; two clamping arms 7 are rotatably fixed in the receiving groove, and the two clamping arms 7 are hingedly connected, and the hinge 74 is fixed on the moving block 6. A first elastic member 62 is provided between the two sides of the moving block 6 and the fixed block 51. The first elastic member 62 is sleeved on the outside of the first guide rod 61. One end of the first guide rod 61 is fixed to the fixed block 51, and the other end of the first guide rod 61 passes through the fixed block 51 and slidably cooperates with the fixed block 51. The first elastic member 62 is a spring.

[0039] like Figure 3 and Figure 4 As shown, the lower end of the clamp arm 7 is a clamping end 71 for contacting the pressed metal rod blank workpiece 100, and the two clamping ends 71 ​​are provided with V-shaped grooves 711 facing each other; the upper end of the clamp arm 7 is a driving end, and a clearance groove 73 is provided at the driving end of the clamp arm 7, which penetrates horizontally and extends vertically. The second guide rod 8 passes horizontally through the fixed block 51, the fixed portion 53 and the clearance groove 73, and the second guide rod 8 is fixedly connected to the fixed block 51. The vertical width of the clearance groove 73 is greater than the diameter of the second guide rod 8. A second elastic member 81 is provided between the fixed portion 53 and the clamp arm 7, and the second elastic member 81 is sleeved on the outside of the second guide rod 8. Under the action of the second elastic member 81, the driving end of the clamp arm 7 has a tendency to close inward to clamp the clamping end 71 of the clamp arm 7. Two linkage members 72 are rotatably connected to the driving end of the clamp arm 7, and the circumferential outer edge cross section of the linkage member 72 is circular; a first lifting driver is fixed to the fixed block 51, and a driving member 521 is connected to the output end of the first lifting driver. The driving member 521 can perform vertical lifting movement under the action of the first lifting driver, and the width of the driving member 521 gradually decreases from top to bottom, and the driving member 521 is conical. When the driving member 521 descends, the driving member 521 squeezes the linkage member 72 of the clamp arm 7 to both sides so that the driving end of the clamp arm 7 opens, so that the clamping end of the clamp arm 7 opens, and when the driving member 521 rises, the second elastic member 81 drives the driving end of the clamp arm 7 to close inward so that the clamping end of the clamp arm 7 is clamped. Among them, the first lifting driver 52 is a cylinder.

[0040] like Figure 1 , Figure 4 and Figure 5As shown, the loading mechanism 2 includes two placement plates 21 fixed on the workbench 1, the two placement plates 21 are arranged horizontally at intervals, and the placement plates 21 are provided with a plurality of first placement grooves 211 that are open upward and penetrate horizontally, and the plurality of first placement grooves 211 are tooth-shaped and arranged horizontally. Two feed plates 22 that are arranged horizontally at intervals are provided between the two placement plates 21, the top of the feed plate 22 is lower than the top of the placement plates 21, and the two feed plates 22 are provided with a plurality of second placement grooves 221 that are open upward and penetrate horizontally, and the plurality of second placement grooves 221 are tooth-shaped and arranged horizontally. A loading driver 3 is fixed at the lower end of the feeding plate 22, and the loading driver 3 includes a first loading driver 31 and a second loading driver 32. The first loading driver 31 drives the feeding plate 22 to move toward the clamping mechanism, and the second loading driver 32 is fixed to the output end of the first loading driver 31. The output end of the second loading driver 32 is fixed to the lower ends of the two feeding plates 22. The second loading driver 32 drives the two feeding plates 22 to rise upward to above the upper end of the placement plate 21.

[0041] When in use, the operator first places a number of pressed metal rod blank workpieces 100 in the first placement slot 211 of the placement plate 21, and then the feeding driver 3 drives the feeding plate 22 to rise and move forward to the clamping mechanism, and then drives the feeding plate 22 to descend, thereby realizing the feeding of the pressed metal rod blank workpiece 100. The second lifting driver 54 drives the fixed block 51 to descend, and at the same time, the first lifting driver 52 causes the driving member 72 to descend, so that the clamping end 71 of the clamp arm 7 opens, so that the clamping end 71 of the clamp arm 7 is located on both sides of the pressed metal rod blank workpiece 100, and then the first lifting driver 52 causes the driving member 72 to rise. The second elastic member 81 presses the driving end of the clamp arm 7 so that the clamping end 71 of the clamp arm 7 clamps the pressed metal rod blank workpiece 100. Then, the punching mechanisms 4 on both sides move toward the middle, and perform rough punching processing on the pressed metal rod blank workpiece 100.

Claims

1. A punching device for punching holes at both ends of a pressed metal rod blank, comprising a feeding mechanism, a punching mechanism and a clamping mechanism, wherein the feeding mechanism is used to feed the pressed metal rod blank to the clamping mechanism, and the punching mechanism comprises two symmetrically arranged punching assemblies, which can move toward or away from the clamping mechanism, and is characterized in that: The clamping mechanism includes two clamping arms for clamping or loosening pressed metal rod-like blank workpieces, and the two clamping arms are hingedly connected; the hinge of the clamping arms is fixed on a moving block, fixed blocks are provided on the lateral sides of the moving block, and a first elastic member is provided between the lateral sides of the moving block and the fixed block; during punching processing, the moving block buffers vibration under the action of the first elastic member.

2. The punching device for punching holes at both ends of a pressed metal rod blank according to claim 1, characterized in that: A first guide rod is provided between the fixed block and the movable block. The first guide rod passes through the fixed block transversely and is slidably matched with the fixed block. One end of the first guide rod is fixed to the movable block. The first elastic member is sleeved on the outer side of the first guide rod.

3. The punching device for punching holes at both ends of a pressed metal rod blank according to claim 1, characterized in that: The lower end of the clamping arm is the clamping end, and the upper end is the driving end; the driving ends of the two clamping arms are provided with a clearance groove which penetrates horizontally and extends vertically, the second guide rod passes through the clearance groove and the two ends of the second guide rod are fixed to the fixed block, and a second elastic member sleeve is sleeved on the outer side of the second guide rod, and the second elastic member is located between the clamping arm and the fixed block; the driving ends of the two clamping arms are closed inwardly under the action of the second elastic member to clamp the clamping ends.

4. The punching device for punching holes at both ends of a pressed metal rod blank according to claim 3 is characterized in that: The driving end of the clamp arm is equipped with a driving member, and the driving member performs vertical lifting movement through a first lifting driver. The width of the driving member gradually decreases from top to bottom, and the driving end of the clamp arm is provided with a linkage member in contact with the driving member; when the driving member descends, the driving end of the clamp arm opens outward to open the clamping end of the clamp arm.

5. The punching device for punching holes at both ends of a pressed metal rod blank according to claim 4, characterized in that: The linkage member is rotatably connected to the clamp arm, and the cross-section of the circumferential outer edge of the linkage member is circular.

6. The punching device for punching holes at both ends of a pressed metal rod blank according to claim 3, 4 or 5, characterized in that: The clamping ends of the two clamping arms are both provided with V-shaped grooves facing each other.

7. The punching device for punching holes at both ends of a pressed metal rod blank according to claim 1, characterized in that: The feeding mechanism includes two placement plates that are arranged at intervals laterally and are used to place a number of pressed metal rod-like blank workpieces, and the placement plates are provided with a number of first placement grooves that are open upwards; two feeding plates that are arranged at intervals laterally are provided between the two placement plates, and the feeding plates are provided with a number of second placement grooves that are open upwards; the placement plates and the feeding plates both extend along the feeding direction, and the feeding plates are equipped with a loading driver, which drives the feeding plates to rise above the upper end of the placement plates and drives the feeding plates to move toward the clamping mechanism.

8. The device for punching holes at both ends of a pressed metal rod blank according to any one of claims 1 to 5, characterized in that: The fixed block is fixed to the output end of the second lifting driver, and the second lifting driver drives the fixed block to move up and down so that the clamping arm moves closer to or away from the feeding mechanism.

9. The device for punching holes at both ends of a pressed metal rod blank according to any one of claims 1 to 5, characterized in that: The two punching assemblies each include a punch, and the output ends of the two punches rotate in opposite directions.

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