Quick die changing mechanism of punching machine tool

Abstract

The utility model discloses a quick die changing mechanism of a punching machine, which relates to the technical field of punching machines and comprises a punching machine, a quick demoulding base is arranged on the front side of the punching machine, a hydraulic machine is fixedly mounted above the front side of the punching machine, and an upper die positioning mechanism is arranged at the output end of the bottom of the hydraulic machine. A mold assembly is arranged at the top of the rapid demolding base, a left-right through containing groove is formed in the top of the rapid demolding base, a clamping sliding groove is formed in the center of the top of the containing groove, and a servo motor is fixedly installed on the rear side of the rapid demolding base. An output shaft of the servo motor penetrates into an inner cavity of the clamping sliding groove and is fixedly provided with a first right-hand and left-hand threaded rod. According to the utility model, the rapid demoulding base and the upper mould positioning mechanism are matched with each other, so that the mould of the punching machine can be rapidly disassembled and assembled without being fixed by bolts, the demoulding replacement speed is increased, and the punching efficiency is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of punching machine tools, in particular to a quick die changing mechanism of a punching machine tool. Background Art

[0002] A stamping machine is a machine that uses the die on its own stamping mechanism to apply pressure to the material during the metal or non-metal processing process, causing it to separate or plastically deform, thereby obtaining the desired parts. It is often used for stamping different parts, and in order to obtain different types of parts, the die often needs to be replaced. The existing technology has the following problems:

[0003] In order to ensure the stability of the upper and lower molds, the existing stamping machine stamping molds usually adopt a T-shaped slide groove, the mold is inserted into the T-shaped slide groove by sliding a round head bolt, and fixed by tightening the bolt. However, once this fixing method needs to be replaced, the round head bolt fixed in the T-shaped slide groove needs to be removed with a rotating nut, and then repeatedly tightened when installing a new mold. The operation process is relatively inconvenient, which affects the efficiency of mold replacement. Utility Model Content

[0004] The utility model provides a quick die-changing mechanism for a punching machine tool to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] The top of the hydraulic press is provided with an eccentric actuator, and the bottom of the hydraulic press is provided with an upper mold positioning mechanism, and the top of the hydraulic press is provided with an upper mold positioning mechanism.

[0007] A further improvement of the technical solution of the present utility model is that: a motor slot is provided in the middle part of the front side of the quick demoulding base, and an L-shaped slide groove is provided on the left and right sides of the quick demoulding base, the vertical parts of the two L-shaped slide grooves are both extended to the top of the placement slot, and the two L-shaped slide grooves are both extended to the inner cavity of the motor slot, and a two-way axis motor is fixedly installed on the bottom of the inner wall of the motor slot, and the left and right output shafts of the two-way axis motor are fixedly installed with a threaded rod one with opposite threads, and the other ends of the two threaded rods one respectively extend through the inner cavity of the L-shaped slide groove and are fixedly installed with a limit plate, and the outer walls of the two threaded rods one are threaded with L-shaped plates, and the vertical parts of the two L-shaped plates extend through the top of the placement slot.

[0008] A further improvement of the technical solution of the present utility model is that: the mold assembly includes a lower mold plate and an upper mold plate, the upper mold plate is located above the lower mold plate, four guide rods are fixedly installed on the top rectangular array of the lower mold plate, and four guide cylinders passing through the upper and lower mold plates are fixedly installed on the rectangular array of the upper mold plate, and the four guide rods are respectively slidably connected to the four guide cylinders.

[0009] A further improvement of the technical solution of the present utility model is that: a positioning groove 1 is provided in the middle of the four side surfaces of the lower mold plate, and a positioning groove 2 is provided in the middle of the four side surfaces of the four upper mold plates, and the vertical parts of the two L-shaped plates are respectively engaged with the positioning grooves 1 provided on the left and right sides of the lower mold plate.

[0010] A further improvement of the technical solution of the present utility model is that: the upper mold positioning mechanism includes a connecting box, the output end of the hydraulic press is fixedly connected to the top of the connecting box, the bottom of the connecting box overlaps the top of the upper mold plate, and a two-way axis motor is fixedly installed at the center of the bottom of the inner wall of the connecting box. The left and right output shafts of the two-way axis motor are respectively fixedly installed with two threaded rods with opposite threads, and the outer walls of the two threaded rods are threadedly installed with movable plates, and the two movable plates are both slidably connected to the inner cavity of the connecting box. The two movable plates are fixedly installed with L-shaped clamps on the side away from the two-way axis motor, and the ends of the two L-shaped clamps away from the movable plates respectively penetrate the left and right sides of the connecting box and are provided with locking mechanisms.

[0011] A further improvement of the technical solution of the present utility model is that: the bottom of the vertical part of the two L-shaped clamps is provided with a lifting slide groove that passes through left and right, the two locking mechanisms include a fixed plate, the two fixed plates are respectively fixedly installed above the opposite back sides of the vertical part of the two L-shaped clamps, the top of the two fixed plates are fixedly installed with an electric push rod, the output ends of the two electric push rods respectively pass through the bottom of the two fixed plates and are fixedly installed with clamping rods, the two clamping rods are respectively slidably connected to the two lifting slide grooves, and the opposite surfaces of the two clamping rods are fixedly installed with inverted T-shaped clamping blocks, and the vertical parts of the two inverted T-shaped clamping blocks are respectively clamped with the mold assemblies opened on the left and right sides of the upper mold plate.

[0012] Due to the adoption of the above technical solution, the present invention has achieved the following technical advancements compared to the prior art:

[0013] 1. The utility model provides a quick die-changing mechanism for a stamping machine tool. Through the mutual cooperation between the quick demoulding base and the upper die positioning mechanism, the die of the stamping machine tool can be quickly disassembled and assembled without the need for bolt fixation, thereby improving the demoulding and replacement speed, thereby further improving the stamping efficiency.

[0014] 2. The utility model provides a quick die-changing mechanism for a stamping machine tool. Through the mutual cooperation between the T-shaped clamp, the L-shaped plate, the L-shaped clamp, and the locking mechanism, the demoulding speed is improved while being applicable to molds of different sizes, thereby improving the applicability of the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is an overall schematic diagram of the structure of the utility model;

[0016] Figure 2 This is a top view of the quick demoulding base of the utility model structure;

[0017] Figure 3 This is a cross-sectional diagram of the quick demoulding base structure of the utility model;

[0018] Figure 4 This is a schematic diagram of the upper mold positioning mechanism of the utility model structure;

[0019] Figure 5 This is a schematic diagram of the locking mechanism of the utility model structure.

[0020] In the figure: 1. Stamping machine; 2. Quick demoulding base; 21. Placement slot; 22. Clamping slide; 23. Servo motor; 24. Forward and reverse threaded rod 1; 25. T-shaped clamp; 26. Motor slot; 261. Bidirectional axis motor 1; 262. Threaded rod 1; 263. Limit plate; 264. L-shaped plate; 27. L-shaped slide; 3. Hydraulic press; 4. Upper mold positioning mechanism; 41. Connecting box; 42. Bidirectional axis motor 2; 43. Threaded rod 2; 44. Moving plate; 45. L-shaped clamp; 451. Lifting slide; 46. Locking mechanism; 461. Fixed plate; 462. Electric push rod; 463. Clamping rod; 464. Inverted T-shaped clamp; 5. Mold assembly; 51. Lower mold plate; 52. Guide rod; 53. Positioning slot 1; 54. Upper mold plate; 55. Guide cylinder; 56. Positioning slot 2. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0022] like Figure 1 、 Figure 2 As shown, the utility model provides a quick die changing mechanism for a stamping machine tool, comprising a stamping machine tool 1, a quick demoulding base 2 is provided on the front side of the stamping machine tool 1, a hydraulic press 3 is fixedly installed on the upper front side of the stamping machine tool 1, an upper mold positioning mechanism 4 is provided at the bottom output end of the hydraulic press 3, a mold assembly 5 is provided on the top of the quick demoulding base 2, a placement groove 21 is provided on the top of the quick demoulding base 2, a clamping slide 22 is provided at the top center of the placement groove 21, a servo motor 23 is fixedly installed on the rear side of the quick demoulding base 2, the output shaft of the servo motor 23 passes through the inner cavity of the clamping slide 22 and is fixedly installed with a positive and negative threaded rod 24, the outer wall of the positive and negative threaded rod 24 is provided with threaded walls with opposite threads on the front and back sides, and the outer walls of the two threaded walls are threadedly installed with T-shaped clamps 25, the vertical parts of the two T-shaped clamps 25 are slidably connected to the inner cavity of the clamping slide 22, and the horizontal bottoms of the two T-shaped clamps 25 are overlapped with the top of the placement groove 21;

[0023] During installation, the mold assembly 5 is placed directly on the top of the placement groove 21 opened on the quick demoulding base 2, and then the servo motor 23 on the rear side of the placement groove 21 can be started to drive the positive and negative threaded rod 24 in the clamping slide 22 to rotate, thereby cooperating with the threaded walls of the positive and negative threaded rod 24 on the front and rear sides of the outer wall and the threaded connection at the vertical part of the T-shaped clamp 25, and the two T-shaped clamps 25 can be driven to move towards each other at the top of the placement groove 21 horizontally, so as to clamp and fix the lower mold plate 51 included in the mold assembly 5 in the front and rear directions, and starting the placement groove 21 to reverse can make the T-shaped clamp 25 horizontally detach from the lower mold plate 51 for disassembly.

[0024] like Figure 3 As shown, a motor slot 26 is provided in the middle of the front side of the quick demoulding base 2, and L-shaped slide grooves 27 are provided on the left and right sides of the quick demoulding base 2. The vertical parts of the two L-shaped slide grooves 27 are both connected to the top of the placement groove 21, and the two L-shaped slide grooves 27 are both connected to the inner cavity of the motor slot 26. A two-way shaft motor 261 is fixedly installed on the bottom of the inner wall of the motor slot 26, and the left and right output shafts of the two-way shaft motor 261 are fixedly installed with threaded rods 262 with opposite threads. The other ends of the two threaded rods 262 respectively penetrate into the inner cavity of the L-shaped slide groove 27 and are fixedly installed with a limiting disk 263. The outer walls of the two threaded rods 262 are threadedly installed with L-shaped plates 264, and the vertical parts of the two L-shaped plates 264 are both connected to the inner cavity of the placement groove 21. At the top, the mold assembly 5 includes a lower mold plate 51 and an upper mold plate 54. The upper mold plate 54 is located above the lower mold plate 51. Four guide rods 52 are fixedly installed in a rectangular array on the top of the lower mold plate 51. Four guide cylinders 55 that pass through the upper mold plate 54 are fixedly installed in a rectangular array. The four guide rods 52 are slidably connected to the four guide cylinders 55 respectively. A vertically penetrating positioning groove 1 53 is opened in the middle of the four side surfaces of the lower mold plate 51. A vertically penetrating positioning groove 2 56 is opened in the middle of the four side surfaces of the four upper mold plates 54. The vertical parts of the two L-shaped plates 264 are respectively engaged with the positioning groove 1 53 opened on the left and right sides of the lower mold plate 51. The positioning groove 1 53 and the positioning groove 2 56 are both holes reserved for fixing with bolts.

[0025] When the lower mold plate 51 is fixed front and back, the bidirectional axis motor 261 in the inner cavity of the motor slot 26 can be started to drive the threaded rod 262 with opposite threads of the output shaft on the left and right sides to rotate, and the threaded connection between the threaded rod 262 and the L-shaped plate 264 can be used to drive the two L-shaped plates 264 to move closer to each other in the two L-shaped slide grooves 27, and finally the vertical part of the L-shaped plate 264 is gradually inserted into the positioning groove 53 opened on the left and right sides of the lower mold plate 51 for clamping and fixing in the left and right directions, so that the lower mold plate 51 is fixed at the top center of the placement groove 21, and when the output shaft of the bidirectional axis motor 261 is driven to reverse, the two L-shaped plates 264 can be moved away from the lower mold plate 51, which is convenient for direct demoulding and disassembly. At the same time, the upper mold plate 54 is still located above the lower mold plate 51 at this time, and the sliding connection between the upper mold plate 54 and the upper mold plate 54 can be maintained by the guide rod 52 and the guide cylinder 55. Stamping stability.

[0026] like Figure 4 、 Figure 5As shown, the upper mold positioning mechanism 4 includes a connecting box 41, the output end of the hydraulic press 3 is fixedly connected to the top of the connecting box 41, the bottom of the connecting box 41 overlaps the top of the upper mold plate 54, and a two-way shaft motor 42 is fixedly installed at the center of the bottom of the inner wall of the connecting box 41. The left and right output shafts of the two-way shaft motor 42 are respectively fixedly installed with threaded rods 43 with opposite threads. The outer walls of the two threaded rods 43 are threadedly installed with moving plates 44. The two moving plates 44 are both slidably connected to the inner cavity of the connecting box 41. The two moving plates 44 are fixedly installed with L-shaped clamps 45 on one side away from the two-way shaft motor 42. The ends of the two L-shaped clamps 45 away from the moving plates 44 respectively penetrate the left and right sides of the connecting box 41 and are provided with locking mechanisms. Structure 46, the bottom of the vertical part of the two L-shaped clamping plates 45 are provided with a lifting slide 451 that passes through left and right, and the two locking mechanisms 46 each include a fixed plate 461, and the two fixed plates 461 are respectively fixedly installed on the upper and lower back surfaces of the two L-shaped clamping plates 45 at the vertical part, and the top of the two fixed plates 461 is fixedly installed with an electric push rod 462, and the output ends of the two electric push rods 462 respectively pass through the bottom of the two fixed plates 461 and are fixedly installed with a clamping rod 463, and the two clamping rods 463 are respectively slidably connected to the two lifting slides 451, and the opposite surfaces of the two clamping rods 463 are fixedly installed with an inverted T-shaped clamping block 464, and the vertical parts of the two inverted T-shaped clamping blocks 464 are respectively clamped with the mold assemblies 5 opened on the left and right sides of the upper mold plate 54;

[0027] After fixing the lower mold plate 51, the hydraulic press 3 can be started to drive the connecting box 41 to descend until it stops at the top center of the upper mold plate 54. Then the bidirectional shaft motor 2 42 in the inner cavity of the connecting box 41 can be started to drive the threaded rod 2 43 with opposite threads connected to the output shafts on both sides to rotate. The threaded connection between the two movable plates 44 in the inner cavity of the connecting box 41 and the outer walls of the two threaded rods 2 43 can drive the two movable plates 44 to move closer to each other, driving the vertical part of the L-shaped clamping plate 45 to clamp and fix the left and right sides of the upper mold plate 54. At the same time, because the lower mold plate 51 has been fixed at the center of the placement groove 21, the upper mold plate 54 is also located at the bottom center of the connecting box 41. When the L-shaped clamping plate 45 is vertically clamped, the inverted T at one end of the clamping rod 463 can be made. The T-shaped clamping block 464 is vertically inserted into the positioning groove 2 56 opened on the left and right sides of the upper mold plate 54 to prevent the upper mold plate 54 from moving forward and backward. At the same time, after being inserted, the electric push rod 462 on the top of the fixed plate 461 is started to drive the clamping rod 463 to rise, so that the bottom of the upper mold plate 54 is squeezed upward by the inverted T-shaped clamping block 464 horizontally, so that the upper mold plate 54 is tightly fixed to the bottom of the connecting box 41. At this time, the hydraulic press 3 is started normally to separate the upper mold plate 54 and the lower mold plate 51 vertically up and down. When demolding, it is necessary to merge the upper mold plate 54 and the lower mold plate 51 and then start the two-way axis motor 2 42 to reverse the output shaft, so that the two L-shaped clamping plates 45 can be separated and moved from each other, and the fixation of the upper mold plate 54 can be released, and the demolding process can be carried out to replace the new mold.

[0028] The following is a detailed description of the working principle of the quick die change mechanism of the stamping machine.

[0029] like Figure 1-5As shown, during installation, the mold assembly 5 is directly placed on the top of the placement groove 21 opened on the quick demoulding base 2, and then the servo motor 23 on the rear side of the placement groove 21 can be started to drive the positive and negative threaded rod 24 in the clamping slide 22 to rotate, so as to cooperate with the threaded walls of the positive and negative threaded rod 24 on the front and rear sides of the outer wall and the threaded connection at the vertical position of the T-shaped clamp 25, and the two T-shaped clamps 25 can be driven to move towards each other at the top of the placement groove 21 horizontally, so as to clamp and fix the lower mold plate 51 included in the mold assembly 5 in the front and rear directions, and the placement groove 21 can be reversed to make the T-shaped clamp 25 horizontally separate from the lower mold plate 51 for disassembly. , and while the front and back are fixed, the bidirectional shaft motor 261 in the inner cavity of the motor slot 26 can be started to drive the threaded rod 262 with opposite threads of the output shaft on the left and right sides to rotate, and the threaded connection between the threaded rod 262 and the L-shaped plate 264 can drive the two L-shaped plates 264 to move closer to each other in the two L-shaped slide grooves 27, and finally use the vertical part of the L-shaped plate 264 to gradually fit into the positioning groove 53 opened on the left and right sides of the lower mold plate 51 to clamp and fix it in the left and right directions, so that the lower mold plate 51 is fixed at the top center of the placement groove 21. At the same time, the upper mold plate 54 is still located above the lower mold plate 51 at this time, and can be connected to the upper mold plate 54 through the guide rod 52 and the guide cylinder. The sliding connection of 55 maintains the stability of stamping. After fixing the lower mold plate 51, the hydraulic press 3 can be started to drive the connecting box 41 to descend until it stops at the top center of the upper mold plate 54. Then the bidirectional shaft motor 2 42 in the inner cavity of the connecting box 41 can be started to drive the threaded rod 2 43 with opposite threads connected to the output shafts on both sides to rotate. The threaded connection between the two moving plates 44 in the inner cavity of the connecting box 41 and the outer walls of the two threaded rods 2 43 can drive the two moving plates 44 to move closer to each other, driving the vertical part of the L-shaped clamping plate 45 to clamp and fix the left and right sides of the upper mold plate 54. At the same time, because the lower mold plate 51 has been fixed at the center of the placement groove 21, The upper mold plate 54 is also located at the bottom center of the connecting box 41. When the L-shaped clamping plate 45 is clamped vertically, the inverted T-shaped clamping block 464 at one end of the clamping rod 463 can be vertically inserted into the positioning groove 2 56 opened on the left and right sides of the upper mold plate 54 to prevent the upper mold plate 54 from moving forward and backward. At the same time, after being inserted, the electric push rod 462 on the top of the fixed plate 461 can be started to drive the clamping rod 463 to rise, so that the inverted T-shaped clamping block 464 is used to squeeze the bottom of the upper mold plate 54 upward horizontally, so that the upper mold plate 54 is tightly fixed to the bottom of the connecting box 41. At this time, the upper mold plate 54 and the lower mold plate 51 can be separated vertically up and down by starting the hydraulic press 3 normally.

[0030] While the present invention has been generally described above, it is readily apparent to those skilled in the art that modifications or improvements may be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A quick die change mechanism for a stamping machine tool, comprising a stamping machine tool (1), characterized in that: The front side of the punching machine (1) is provided with a quick demoulding base (2), a hydraulic press (3) is fixedly installed above the front side of the punching machine (1), an upper mold positioning mechanism (4) is provided at the bottom output end of the hydraulic press (3), a mold assembly (5) is provided on the top of the quick demoulding base (2), a placement groove (21) is provided on the top of the quick demoulding base (2) and a clamping slide groove (22) is provided at the center of the top of the placement groove (21), and a rear side of the quick demoulding base (2) is fixedly installed. A servo motor (23) is provided, the output shaft of the servo motor (23) passes through the inner cavity of the clamping chute (22) and is fixedly installed with a positive and negative threaded rod (24), the outer wall of the positive and negative threaded rod (24) is provided with threaded walls with opposite threads on both the front and rear sides, the outer walls of the two threaded walls are threadedly installed with T-shaped clamps (25), the vertical parts of the two T-shaped clamps (25) are slidably connected to the inner cavity of the clamping chute (22), and the horizontal bottoms of the two T-shaped clamps (25) are overlapped with the top of the placement groove (21).

2. The rapid die-changing mechanism for a stamping machine tool according to claim 1, characterized in that: A motor slot (26) is provided in the middle of the front side of the quick demoulding base (2), and L-shaped slide grooves (27) are provided on the left and right sides of the quick demoulding base (2), and the vertical parts of the two L-shaped slide grooves (27) are both connected to the top of the placement groove (21), and the two L-shaped slide grooves (27) are both connected to the inner cavity of the motor slot (26), and a bidirectional shaft motor (261) is fixedly installed at the bottom of the inner wall of the motor slot (26), and the left and right output shafts of the bidirectional shaft motor (261) are both fixedly installed with threaded rods (262) with opposite threads, and the other ends of the two threaded rods (262) respectively pass through the inner cavity of the L-shaped slide groove (27) and are fixedly installed with a limiting plate (263), and the outer walls of the two threaded rods (262) are both threadedly installed with L-shaped plates (264), and the vertical parts of the two L-shaped plates (264) are both connected to the top of the placement groove (21).

3. The rapid die-changing mechanism for a stamping machine tool according to claim 2, characterized in that: The mold assembly (5) comprises a lower mold plate (51) and an upper mold plate (54). The upper mold plate (54) is located above the lower mold plate (51). Four guide rods (52) are fixedly mounted in a rectangular array on the top of the lower mold plate (51). Four guide cylinders (55) passing through the upper mold plate (54) are fixedly mounted in a rectangular array. The four guide rods (52) are slidably connected to the four guide cylinders (55) respectively.

4. The rapid die-changing mechanism for a stamping machine tool according to claim 3, characterized in that: The four side surfaces of the lower mold plate (51) are provided with a first positioning groove (53) extending vertically therethrough in the middle, and the four side surfaces of the four upper mold plates (54) are provided with a second positioning groove (56) extending vertically therethrough in the middle. The vertical portions of the two L-shaped plates (264) are respectively engaged with the first positioning groove (53) provided on the left and right sides of the lower mold plate (51).

5. The rapid die-changing mechanism for a stamping machine tool according to claim 1, characterized in that: The upper mold positioning mechanism (4) includes a connecting box (41), the output end of the hydraulic press (3) is fixedly connected to the top of the connecting box (41), the bottom of the connecting box (41) overlaps the top of the upper mold plate (54), and a two-way shaft motor (42) is fixedly installed at the center of the bottom of the inner wall of the connecting box (41). The left and right output shafts of the two-way shaft motor (42) are respectively fixedly installed with two threaded rods (43) with opposite threads. The outer walls of the two threaded rods (43) are both threadedly installed with moving plates (44). The two moving plates (44) are both slidably connected to the inner cavity of the connecting box (41). The two moving plates (44) are fixedly installed with L-shaped clamps (45) on the side away from the two-way shaft motor (42). The ends of the two L-shaped clamps (45) away from the movable plates (44) respectively pass through the left and right sides of the connecting box (41) and are provided with locking mechanisms (46).

6. The rapid die-changing mechanism for a stamping machine tool according to claim 5, characterized in that: The bottom of the vertical part of the two L-shaped clamps (45) is provided with a lifting slot (451) that passes through left and right. The two locking mechanisms (46) include a fixed plate (461). The two fixed plates (461) are respectively fixedly installed on the upper and lower back surfaces of the vertical parts of the two L-shaped clamps (45). The tops of the two fixed plates (461) are fixedly installed with electric push rods (462). The output ends of the two electric push rods (462) respectively pass through the bottom of the two fixed plates (461) and are fixedly installed with clamping rods (463). The two clamping rods (463) are respectively slidably connected to the two lifting slots (451). The opposite surfaces of the two clamping rods (463) are fixedly installed with inverted T-shaped clamping blocks (464). The vertical parts of the two inverted T-shaped clamping blocks (464) are respectively clamped with the mold assemblies (5) opened on the left and right sides of the upper mold plate (54).

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