Quick replacement die for bending machine

Abstract

The utility model discloses a quick-change die for a bending machine, which comprises a mounting rack, L-shaped supports are mounted on two sides of the mounting rack through lifting structures, rotating shafts are rotatably mounted on the supports, rotating plates are fixedly mounted at opposite ends of the rotating shafts of the two supports, and the rotating plates are fixedly mounted on the mounting rack. Wherein the outer end of one rotating shaft is fixedly connected with an output shaft of a servo motor, the servo motor is fixedly installed on the support, and the rotating plate is rectangular. A die holder is detachably installed between the two rotating plates and is in a rectangular block shape, and different die openings are formed in the four directions of the die holder correspondingly. And the mounting frame is provided with a die holder positioning structure and a die holder locking structure. The rapid replacement die for the bending machine has the advantages of being stable in locking, convenient to use and high in efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of bending machines, in particular to a quick-changing mold for a bending machine. Background Art

[0002] In the production process of commercial air conditioners, various sheet metal parts are used. At present, a bending machine is needed to bend the sheet metal parts. Different sheet metal bending structures are formed according to the die openings of different die bases of the bending machine.

[0003] However, in the actual production process, the mold base needs to be replaced frequently to obtain the corresponding mold opening. The replacement efficiency is low and the labor intensity is high. In addition, frequent replacement will lead to reduced equipment accuracy and affect the final sheet metal forming quality. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by this patent application is how to provide a quick-change mold for a bending machine that has stable locking, is easy to use, and has high efficiency.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A quick-change die for a bending machine comprises a mounting frame, brackets are mounted on both sides of the mounting frame through a lifting structure, the brackets are L-shaped, a rotating shaft is rotatably mounted on the brackets, rotating plates are fixedly mounted on the ends of the rotating shafts of two brackets, an outer end of one rotating shaft is fixedly connected to an output shaft of a servo motor, the servo motor is fixedly mounted on the brackets, and the rotating plate is rectangular;

[0007] A die base is detachably installed between the two rotating plates, the die base is in a rectangular block shape, and different die openings are respectively arranged at four positions of the die base;

[0008] The mounting frame is provided with a mold base positioning structure and a mold base locking structure.

[0009] In this way, the die base can be detachably mounted on the mounting frame, the die base positioning structure positions the die base, and the die base locking structure locks the die base. When the die mouth needs to be replaced, that is, the die base needs to be rotated, the die base locking structure is unlocked, the lifting structure drives the bracket to rise, the die base is disengaged from the die base positioning structure, and the distance the die base rises to above the mounting frame is greater than the diagonal size of the die base, the servo motor drives the die base to rotate, when it rotates to the required die mouth upward, the servo motor stops, the lifting structure drives the die base down to the mounting frame, the die base positioning structure positions the die base, and the die base locking structure locks the die base to complete the replacement of the die mouth. When the die base needs to be replaced, the die base can be disassembled, which is convenient for disassembly and assembly.

[0010] Wherein, the lifting structure comprises a cylinder seat fixedly mounted on a mounting frame, a cylinder is fixedly mounted on the lower end of the cylinder seat, and a cylinder rod of the cylinder passes through the cylinder seat and is fixedly connected to the bracket.

[0011] A vertically arranged guide rod is fixed between the cylinder seat and the mounting frame, and a guide hole which is slidably matched with the guide rod is penetrated through the bracket.

[0012] Wherein, a threaded hole is provided at the end of the mold base, and the mold base is fixedly connected to the rotating plate by screws.

[0013] The mold base positioning structure includes positioning pins fixedly mounted on a mounting frame, and positioning holes capable of being plugged and matched with the positioning pins are arranged at four positions of the mold base.

[0014] The mold base locking structure includes two locking plates, the locking plates are fixedly provided with locking pins which can be plugged into and cooperate with the positioning blocks, and the mounting frame is provided with a synchronous power mechanism for driving the two locking plates to move synchronously.

[0015] Wherein, at least two synchronous power mechanisms are provided.

[0016] Among them, the synchronous power mechanism includes a bidirectional screw, which is installed on a mounting frame through a bearing seat, and a driving motor is fixedly installed on the mounting frame. One end of the bidirectional screw is fixedly connected to the output shaft of the driving motor. Two nut blocks are threadedly connected to the bidirectional screw, and the threads at both ends of the bidirectional screw have opposite rotation directions. A clearance groove for allowing the nut block to pass through is opened on the mounting frame, and the two sides of the nut block are slidably fitted with the groove sides of the clearance groove, and the upper ends of the two nut blocks are respectively fixedly connected to the locking plates.

[0017] In summary, the quick-change mold for the bending machine has the advantages of stable locking, easy use and high efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The utility model is a structural schematic diagram of a quick-change mold for a bending machine.

[0019] Figure 2 for Figure 1 Schematic diagram with the mold base removed.

[0020] Figure 3 for Figure 2 Enlarged schematic diagram at point A in the middle.

[0021] Figure 4 Schematic diagram of the synchronous power mechanism.

[0022] Figure 5 Schematic diagram of the lifting structure. DETAILED DESCRIPTION

[0023] The present invention is further described in detail below in conjunction with the accompanying drawings. In the description of the present invention, it should be understood that the directions or positional relationships indicated by directional words such as "upper, lower" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description. Unless otherwise stated, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0024] like Figure 1-5 As shown, a quick-change mold for a bending machine includes a mounting frame 1, brackets 2 are installed on both sides of the mounting frame through a lifting structure, the brackets are L-shaped, a rotating shaft is rotatably installed on the brackets, and rotating plates 3 are fixedly installed at the ends of the rotating shafts of the two brackets, the outer end of one of the rotating shafts is fixedly connected to the output shaft of a servo motor 4, the servo motor is fixedly installed on the bracket, and the rotating plate is rectangular;

[0025] A die base 5 is detachably installed between the two rotating plates, and the die base is in a rectangular block shape, and four positions of the die base are respectively provided with different die openings 6;

[0026] The mounting frame is provided with a mold base positioning structure and a mold base locking structure.

[0027] In this way, the die base can be detachably mounted on the mounting frame, the die base positioning structure positions the die base, and the die base locking structure locks the die base. When the die mouth needs to be replaced, that is, the die base needs to be rotated, the die base locking structure is unlocked, the lifting structure drives the bracket to rise, the die base is disengaged from the die base positioning structure, and the distance the die base rises to above the mounting frame is greater than the diagonal size of the die base, the servo motor drives the die base to rotate, when it rotates to the required die mouth upward, the servo motor stops, the lifting structure drives the die base down to the mounting frame, the die base positioning structure positions the die base, and the die base locking structure locks the die base to complete the replacement of the die mouth. When the die base needs to be replaced, the die base can be disassembled, which is convenient for disassembly and assembly.

[0028] During implementation, the lifting structure includes a cylinder seat 11 fixedly mounted on a mounting frame, a cylinder 12 is fixedly mounted at the lower end of the cylinder seat, and a cylinder rod of the cylinder passes through the cylinder seat and is fixedly connected to the bracket. The cylinder drives the bracket to lift.

[0029] During implementation, a vertically arranged guide rod 13 is fixed between the cylinder seat and the mounting frame, and a guide hole slidably matched with the guide rod is provided through the bracket, so as to guide the lifting and lowering of the bracket.

[0030] During implementation, a threaded hole is provided at the end of the mold base, and the mold base is fixedly connected to the rotating plate by screws, so as to facilitate disassembly and assembly.

[0031] During implementation, the mold base positioning structure includes a positioning pin 21 fixedly mounted on the mounting frame, and four positions of the mold base are provided with positioning holes 22 that can be plugged and matched with the positioning pin, so as to better position the mold base.

[0032] During implementation, the die base locking structure includes two locking plates 23, the locking plates are fixedly mounted with locking pins 24 that can be plugged into the positioning block, and the mounting frame is mounted with a synchronous power mechanism for driving the two locking plates to move synchronously. The synchronous power mechanism drives the two locking plates to move closer to clamp and lock the die base.

[0033] During implementation, at least two synchronous power mechanisms are provided to improve the clamping effect of the locking plate.

[0034] During implementation, the synchronous power mechanism includes a bidirectional screw 25, which is mounted on a mounting frame through a bearing seat, and a driving motor 26 is fixedly mounted on the mounting frame. One end of the bidirectional screw is fixedly connected to the output shaft of the driving motor, and two nut blocks 27 are threadedly connected to the bidirectional screw. The threads at both ends of the bidirectional screw have opposite rotation directions. A clearance groove 8 is provided on the mounting frame to allow the nut blocks to pass through. The two sides of the nut block are slidably fitted with the groove sides of the clearance groove, and the upper ends of the two nut blocks are fixedly connected to the locking plates respectively. The driving motor drives the bidirectional screw to rotate, and the locking plate is driven to move through the nut block, and the clearance groove guides the movement of the nut block.

[0035] Finally, it should be noted that those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include these modifications and variations.

Claims

1. A quick-change die for a bending machine, characterized in that: It comprises a mounting frame, brackets are installed on both sides of the mounting frame through a lifting structure, the brackets are L-shaped, a rotating shaft is rotatably installed on the bracket, and rotating plates are fixedly installed at the ends of the rotating shafts of the two brackets, the outer end of one rotating shaft is fixedly connected to the output shaft of the servo motor, the servo motor is fixedly installed on the bracket, and the rotating plate is rectangular; A die base is detachably installed between the two rotating plates, the die base is in a rectangular block shape, and different die openings are respectively arranged at four positions of the die base; The mounting frame is provided with a mold base positioning structure and a mold base locking structure.

2. A quick-change mold for a bending machine according to claim 1, characterized in that: The lifting structure comprises a cylinder seat fixedly mounted on a mounting frame, a cylinder is fixedly mounted on the lower end of the cylinder seat, and a cylinder rod of the cylinder passes through the cylinder seat and is fixedly connected to the bracket.

3. A quick-change mold for a bending machine according to claim 2, characterized in that: A vertically arranged guide rod is fixed between the cylinder seat and the mounting frame, and a guide hole which is slidably matched with the guide rod is penetrated through the bracket.

4. The quick-change mold for a bending machine according to claim 3, characterized in that: A threaded hole is provided at the end of the mold base, and the mold base is fixedly connected to the rotating plate by screws.

5. The quick-change mold for a bending machine according to claim 4, characterized in that: The mold base positioning structure comprises a positioning pin fixedly mounted on a mounting frame, and positioning holes capable of being plugged and matched with the positioning pin are arranged at four positions of the mold base.

6. A quick-change die for a bending machine according to claim 5, characterized in that: The die base locking structure comprises two locking plates, the locking plates are fixedly provided with locking pins which can be plugged and matched with the positioning blocks, and the mounting frame is provided with a synchronous power mechanism for driving the two locking plates to move synchronously.

7. A quick-change die for a bending machine according to claim 6, characterized in that: At least two synchronous power mechanisms are provided.

8. The quick-change mold for a bending machine according to claim 7, characterized in that: The synchronous power mechanism includes a bidirectional screw, which is installed on a mounting frame through a bearing seat. A driving motor is fixedly installed on the mounting frame. One end of the bidirectional screw is fixedly connected to the output shaft of the driving motor. Two nut blocks are threadedly connected to the bidirectional screw. The threads at both ends of the bidirectional screw have opposite rotation directions. A clearance groove for allowing the nut block to pass through is opened on the mounting frame. The two sides of the nut block are slidably fitted with the groove sides of the clearance groove, and the upper ends of the two nut blocks are fixedly connected to the locking plates respectively.

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