A quick-release device for upper die of bending machine

Abstract

The utility model discloses a quick-release device for an upper die of a bending machine, comprising an upper die seat, and also comprising: a movable plate, which can selectively approach or move away from the upper die seat; a clamping piece, which is used to press and fix the upper die body and the upper die seat; when the movable plate approaches the upper die seat, the clamping piece is driven upward to press the upper die body on the upper die seat; when the movable plate moves away from the upper die seat, the clamping piece gradually relaxes the upper die body, and when the movable plate returns to the initial position, the clamping piece constrains the upper die body under the action of gravity and does not separate from it, and in this state, the upper die body can be selectively separated vertically from the clamping piece. It can complete vertical assembly and disassembly, especially in working conditions with limited horizontal space, and can be fully applicable. The overall structure is compact, small in size, low in cost, and easy to operate.

Description

Technical Field

[0001] The utility model belongs to the technology of quick-disassembly of upper molds for bending, in particular to a quick-disassembly device for upper molds of bending machines. Background Art

[0002] In the workpiece bending process, a bending upper die and a bending lower die are usually required. The bending upper die has an upper die clamping part and an upper die cutter head. The bending lower die is V-shaped. The workpiece is placed between the bending upper die and the bending lower die. The upper die clamping part is clamped on the bending machine. The upper die cutter head applies force to the surface of the workpiece to bend the workpiece.

[0003] After searching CN 201394597Y, a quick clamping device for the upper die of a bending machine is found, which includes a rear plate, a front plate arranged on the front surface of the rear plate and a locking plate arranged in front of the front plate, the front plate is located between the rear plate and the locking plate, and its bottom edge end is retracted upward, the rear plate, the front plate and the locking plate are staggered, and their lower parts form a clamping groove body; an oblique iron is installed on the upper surface of the rear plate, and the oblique iron is fastened to the front plate, the locking plate, the front plate and the rear plate are connected by two bolts, and a spring is mounted on the bolt, and the spring is pressed between the locking plate and the rear plate, characterized in that: a transverse handle groove is provided above the two bolt holes of the locking plate, and an eccentric handle is hingedly installed on the inner end of the handle groove, and when the eccentric handle is closed, it presses the front surface of the front plate. In actual application of this technology, the bending upper die is installed between the locking plate and the back plate. When the eccentric handle is closed, the front surface of the front plate is pressed tightly, and the locking plate rotates slightly with the two bolts below it as the fulcrum, and the lower part of the locking plate is retracted, and the bending upper die is pressed by the elastic clamping strip; when the eccentric handle is pulled up and opened, the locking plate returns to its original position under the action of the spring, and the bending upper die can be loosened and removed. There are the following problems: First, since the upper die has an installation reference surface (surface A or surface B), if Figure 3 As shown, during installation, the operator needs to install the upper die on the installation reference surface before clamping. Secondly, during disassembly, the upper die needs to be caught, otherwise it will fall and cause damage to the upper die. Summary of the invention

[0004] In order to solve the above technical problems, the inventors have obtained the technical solution of the utility model through practice and summary. The utility model adopts the following technical solution:

[0005] A quick-release device for an upper die of a bending machine comprises an upper die seat and also comprises:

[0006] A movable plate, which can selectively move closer to or farther from the upper die seat;

[0007] A clamping piece, which is used to press and fix the upper die body and the upper die base;

[0008] When the moving plate approaches the upper die seat, it drives the clamping piece upward to press the upper die body onto the upper die seat;

[0009] When the movable plate moves away from the upper die seat, the clamping piece gradually relaxes the upper die body. When the movable plate returns to the initial position, the clamping piece constrains the upper die body under the action of gravity and does not separate from it. In this state, the upper die body can be selectively separated vertically from the clamping piece.

[0010] Preferably, a connecting hole pointing obliquely downward toward the upper die seat is provided on the side of the movable plate facing away from the upper die seat, the connecting hole is a T-shaped hole, a limiting pin is installed in the connecting hole, and the limiting pin is used to penetrate the movable plate and connect the clamp.

[0011] Preferably, a spring is installed in the connecting hole, and the spring is sleeved on the outside of the limiting pin and is located on the lower side of the large head structure at the top of the limiting pin.

[0012] Preferably, the movable plate is provided with a guide surface parallel to the axis of the connecting hole, and the clamp moves along the guide surface.

[0013] Preferably, a driving member is also included, and the driving member is used to drive the movable plate to selectively approach or move away from the upper mold base.

[0014] Preferably, the driving member is installed on the rear side of the upper die base, the movable plate is installed on the front side of the upper die base, and the movable end of the driving member passes through the upper die base and is connected to the movable plate.

[0015] Preferably, a guide rod is installed on the upper die seat, and the guide rod freely passes through the movable plate, and the guide rod is used for guiding the movable plate when it moves.

[0016] Preferably, the clamping member is provided with a hook clamping surface and a restraining surface, the hook clamping surface is used for vertically hooking the upper mold body, and the restraining surface is used for laterally pressing the upper mold body onto the upper mold base.

[0017] Preferably, a blocking body is provided on the clamping member at a side close to the upper die seat, and the blocking body is located at the top of the upper die body.

[0018] Preferably, a limiting boss is provided on the guide surface, and the limiting boss is used to set the downward stroke of the clamp relative to the movable plate.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] The utility model adopts a movable plate to approach or move away from the upper mold base, and then tightens and loosens the upper mold body through the clamping piece. The clamping piece can vertically overcome the gravity of the upper mold body in a relaxed state and restrain the upper mold body from falling. At the same time, the upper mold body and the clamping piece can be actively separated in this state. One way is that the upper mold body moves upward and the clamping piece does not move upward. The upper mold body moves vertically upward for a short distance, so that the top is deflected forward by a certain angle, and the clamping piece moves upward relative to the upper mold body and gradually moves away until it is completely separated, and finally pulled down to achieve separation. Another way is that the clamping piece and the upper mold body move upward together, and during the upward process, the clamping piece gradually moves away from the upper mold body relative to the upper mold base. After the two are separated, they can continue to move upward for a short distance and then quickly pull down to achieve straight up and down assembly and disassembly, or the top of the upper mold body is deflected forward by a certain angle, and the clamping piece will completely separate from the upper mold body, and then pulled down.

[0021] The utility model can complete vertical assembly and disassembly, especially in the case of limited horizontal space, and is fully applicable. The overall structure is compact, the volume is small, the cost is low, and the operation is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The overall structure of the utility model is shown in FIG. Figure 1 ;

[0023] Figure 2 This is the first clamping structure of the utility model;

[0024] Figure 3 It is the upper mold body structure 1 of the utility model;

[0025] Figure 4 It is a cross-sectional view of the movable plate of the utility model;

[0026] Figure 5 This is the overall structural diagram of the movable plate of the utility model;

[0027] Figure 6 for Figure 1 Disassembly diagram of the upper mold body in the structure;

[0028] Figure 7 The overall structure of the utility model is shown in FIG. Figure 2 ;

[0029] Figure 8 This is the second clamping structure of the utility model;

[0030] Fig. 9 for Figure 7 Disassembly diagram of the upper mold body in the structure;

[0031] Fig.10 The overall structure of the utility model is shown in FIG. Figure 3 ;

[0032] Fig.11This is the third clamping structure of the utility model.

[0033] In the figure: 1. movable plate; 11. connecting hole; 12. limiting pin; 13. spring; 2. clamping member; 21. hook clamping surface; 22. restraining surface; 23. blocking body; 24. limiting boss; 3. driving member; 4. upper die seat; 41. guide rod; 5. upper die body. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0035] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are 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, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0036] like Figures 1 to 5 As shown, a quick-release device for an upper die of a bending machine includes an upper die seat 4 and further includes:

[0037] A movable plate 1, which can selectively approach or move away from an upper die holder 4;

[0038] A clamping member 2, the clamping member 2 is used to press and fix the upper mold body 5 and the upper mold base 4;

[0039] When the moving plate 1 approaches the upper die seat 4, it drives the clamping member 2 upward to press the upper die body 5 onto the upper die seat 4;

[0040] When the movable plate 1 moves away from the upper mold base 4, the clamping part 2 gradually relaxes the upper mold body 5. When the movable plate 1 returns to the initial position, the clamping part 2 constrains the upper mold body 5 under the action of gravity and does not separate from it. In this state, the upper mold body 5 can be selectively separated vertically from the clamping part 2.

[0041] Among them, the movable plate 1 is provided with a connecting hole 11 obliquely downward and pointing to the upper mold base 4 on the side facing away from the upper mold base 4. The connecting hole 11 is a T-shaped hole. A limiting pin 12 is installed in the connecting hole 11. The limiting pin 12 is used to penetrate the movable plate 1 and connect the clamp 2.

[0042] The upper mold body 5 is inserted from bottom to top between the upper mold base 4 and the movable plate 1, and is prevented from falling freely by the clamping piece 2. When the movable plate 1 approaches the upper mold base 4, the clamping piece 2 drives the upper mold body 5 upward and presses the upper mold body 5 on the upper mold base 4; when the movable plate 1 is away from the upper mold base 4, the clamping piece 2 and the upper mold body 5 descend to the initial position under the action of gravity, and by moving the upper mold body 5 upward a short distance and deflecting the top forward, the clamping piece 2 ascends relative to the upper mold body 5 and gradually disengages from the groove of the upper mold body 5, and then the upper mold body 5 is pulled down to be vertically removed from between the upper mold base 4 and the movable plate 1.

[0043] Preferably, Figure 2 As shown, the clamping part 2 is provided with a hook clamping surface 21 and a constraint surface 22, which form a concave hooking area. The hook clamping surface 21 is horizontally arranged at the bottom for vertically hooking the upper mold body 5, and the constraint surface 22 is used for laterally pressing the upper mold body 5 on the upper mold base 4.

[0044] Preferably, Figure 5 As shown, the connection holes 11 can be provided with one group or multiple groups arranged in parallel in the horizontal direction. The movable plate 1 is provided with a guide surface arranged parallel to the axis of the connection holes 11, so that the clamping part 2 can be balanced in motion, and the clamping part 2 always moves in close contact with the guide surface. The angle between the guide surface and the lifting hole and the horizontal plane is 10-89°, preferably 45°, and the vertical displacement of the clamping part 2 is equal to the horizontal displacement.

[0045] Preferably, Figure 4 and Figure 5 As shown, a limiting boss 24 is provided on the guide surface, and the limiting boss 24 is used to set the downward stroke of the clamping member 2 relative to the movable plate 1.

[0046] Preferably, Figure 1 As shown, a spring 13 is installed in the connecting hole 11, and the spring 13 is sleeved on the outside of the limiting pin 12 and is located at the lower side of the large head structure at the top of the limiting pin 12. The spring 13 is used to reduce the impact strength between the clamping part 2 and the moving plate 1.

[0047] Preferably, Figure 1 As shown, it also includes a driving member 3, which can be a pneumatic cylinder, an oil cylinder, or a servo electric cylinder. The driving member 3 is used to drive the moving plate 1 to selectively approach or move away from the upper die seat 4.

[0048] The driving member 3 is installed on the rear side of the upper die base 4 , the moving plate 1 is installed on the front side of the upper die base 4 , and the movable end of the driving member 3 passes through the upper die base 4 and is connected to the moving plate 1 .

[0049] The drive member 3 and the movable plate are located on both sides of the upper die base, and the front and rear structural layout on the upper die base 4 is optimized, so that the space can be better utilized, making the entire fixture system more compact, while providing a larger operating space, which is convenient for the installation, adjustment and replacement of the mold. This layout makes operation and maintenance more convenient and improves work efficiency. The drive member 3 can be used as a universal part or standard part of the same type of clamping structure, so that when replacing the same type of clamping structure with different specifications and replacing the clamping member 2, multiple specifications can be pre-set for pre-selection, without replacing the drive member 3 on the rear side, reducing the workload. It can also share the clamping force more evenly to ensure that the upper mold body 5 is balanced in force during the clamping process. This balanced distribution reduces the deformation or displacement of the mold due to uneven force, thereby improving the stability and accuracy of the processing.

[0050] like Figure 5 As shown, a guide rod 41 is installed on the upper die base 4, and the guide rod 41 freely penetrates the movable plate 1. The guide rod 41 is used for guiding the movable plate 1 during movement to ensure stable longitudinal movement.

[0051] Preferably, Figures 7 to 9 As shown, the clamp 2 is provided with a blocking body 23 on one side close to the upper mold base 4, and the blocking body 23 is located at the top of the upper mold body 5. When the clamp 2 and the upper mold body 1 are in the initial position, the clamp 2 is moved upward, and when the top of the clamp 2 supports the blocking body 23, it moves upward together with the upper mold body 1, and during the upward process, the clamp 2 gradually moves away from the upper mold base 4 under the action of the limit pin 12. After the two are separated, they can continue to move upward for a short distance and then quickly pull down to achieve straight up and down assembly and disassembly, or the top of the upper mold body 5 is deflected forward by a certain angle, the clamp 2 will completely separate from the upper mold body 5, and then pull down. Alternatively, the upper mold body and the clamp are moved obliquely upward to a certain height together, the upper mold body is moved close to the upper mold base and fits it to the surface, and then the upper mold body is quickly pulled down, and the disassembly work can also be completed.

[0052] Alternatively, a blind hole is provided on the side of the movable plate 1 opposite to the upper mold base 4, a reset spring 202 and a clamp 2 are installed in the blind hole, the end of the clamp 2 is two wedge-shaped surfaces, a guide groove is provided on the inner wall of the blind hole, a sliding body is provided on the clamp 2, the sliding body and the guide groove are slidably adapted, and a limit plate 201 is installed at the end of the blind hole, the limit plate 201 is used to prevent the sliding body from moving out.

[0053] When the upper mold body 5 is installed from bottom to top in the area between the upper mold base 4 and the moving plate 1, the end of the clamping piece 2 will be inserted into the notch of the upper mold body 5, squeezing the return spring 202 inward. After insertion, the elastic force of the return spring 202 is sufficient to overcome the fall of the upper mold body 5; when the moving plate 1 approaches the upper mold base 4, the return spring 202 continues to compress, and at the same time, the wedge surface moves the upper mold body 5 upward until the A surface or the B surface is attached to the bottom of the upper mold base 4. During the return process of the moving plate 1, the return spring 202 prevents the upper mold body 5 from falling, and when the spring pressure is overcome by the downward pulling force resistance, the upper mold body 5 and the clamping piece 2 will be actively separated.

[0054] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited to this. The replacement can be a replacement of part of the structure, device, method step, or a complete technical solution. After the clamp is fixed to the upper mold body, the top rear side wall and the top rear upper surface of the upper mold body are pressed on the upper mold base. Equivalent replacement or change according to the technical solution of the utility model and its inventive concept should be included in the protection scope of the utility model.

Claims

1. A quick-release device for an upper die of a bending machine, comprising an upper die seat (4), characterized in that: Also includes: A movable plate (1), the movable plate (1) being capable of selectively moving closer to or farther from an upper die seat (4); A clamping member (2), the clamping member (2) is used to press and fix the upper mold body (5) and the upper mold base (4); When the movable plate (1) approaches the upper die seat (4), the clamping member (2) is driven upward to press the upper die body (5) against the upper die seat (4); When the movable plate (1) moves away from the upper mold base (4), the clamping member (2) gradually relaxes the upper mold body (5). When the movable plate (1) returns to the initial position, the clamping member (2) constrains the upper mold body (5) under the action of gravity and does not separate from it. In this state, the upper mold body (5) can be selectively separated vertically from the clamping member (2).

2. The quick-release device for upper die of a bending machine according to claim 1, characterized in that: The movable plate (1) is provided with a connection hole (11) on the side facing away from the upper die seat (4) and pointing obliquely downward toward the upper die seat (4). The connection hole (11) is a T-shaped hole. A limiting column pin (12) is installed in the connection hole (11). The limiting column pin (12) is used to penetrate the movable plate (1) and connect the clamping part (2).

3. The quick-release device for upper die of a bending machine according to claim 2, characterized in that: A spring (13) is installed in the connection hole (11), and the spring (13) is sleeved on the outside of the limiting column pin (12) and is located at the lower side of the large head structure at the top of the limiting column pin (12).

4. The quick-release device for upper die of a bending machine according to claim 3, characterized in that: The movable plate (1) is provided with a guide surface which is arranged parallel to the axis of the connecting hole (11), and the clamping member (2) moves along the guide surface; A limiting boss (24) is provided on the guide surface, and the limiting boss (24) is used to set the downward stroke of the clamping member (2) relative to the movable plate (1).

5. The quick-release device for upper die of a bending machine according to claim 4, characterized in that: It also includes a driving member (3) for driving the movable plate (1) to selectively move closer to or farther away from the upper die seat (4).

6. The quick-release device for upper die of a bending machine according to claim 5, characterized in that: The driving member (3) is installed on the rear side of the upper die base (4), the movable plate (1) is installed on the front side of the upper die base (4), and the movable end of the driving member (3) passes through the upper die base (4) and is connected to the movable plate (1).

7. The quick-release device for upper die of a bending machine according to claim 1, characterized in that: A guide rod (41) is installed on the upper die seat (4), and the guide rod (41) freely penetrates the movable plate (1). The guide rod (41) is used for guiding the movable plate (1) when it moves.

8. The quick-release device for upper die of a bending machine according to claim 1, characterized in that: The clamping piece (2) is provided with a hook clamping surface (21) and a restraining surface (22), wherein the hook clamping surface (21) is used for vertically hooking the upper mold body (5), and the restraining surface (22) is used for laterally pressing the upper mold body (5) onto the upper mold base (4).

9. The quick-release device for upper die of a bending machine according to claim 1, characterized in that: The clamping member (2) is provided with a blocking body (23) on one side close to the upper die seat (4), and the blocking body (23) is located on the top of the upper die body (5).

10. The quick-release device for upper die of a bending machine according to claim 1, characterized in that: A blind hole is arranged on one side of the movable plate (1) opposite to the upper die seat (4), a reset spring (202) and a clamping member (2) are installed in the blind hole, the end of the clamping member (2) is two wedge-shaped surfaces, a guide groove is arranged on the inner wall of the blind hole, a sliding body is arranged on the clamping member (2), the sliding body and the guide groove are slidably adapted, and a limit plate (201) is installed at the end of the blind hole, the limit plate (201) is used to prevent the sliding body from moving outward.

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