Upper and lower die structure of hydraulic numerical control bending machine

Abstract

The utility model relates to the technical field of bending machines, in particular to a hydraulic numerical control bending machine upper and lower die structure which comprises an operation table and a hydraulic machine, the hydraulic machine is installed at the top end of the operation table, an upper die mechanism is installed at the bottom end of the hydraulic machine, the upper die mechanism comprises a limiting block, and an upper die is inserted into the limiting block. Four sets of screws are arranged at the joint of the upper die and the limiting block for fixing, a base plate is installed on the table top of the operation table, a lower die mechanism is installed on the upper side of the base plate and comprises a lower main die, and the front end of the lower main die is connected with the rear end of a pushing assembly. Different types of upper dies can be inserted into T-shaped grooves formed in the limiting blocks, installation and replacement are more convenient and faster, the lower auxiliary die can move in the sliding rails to adjust the angle of the plate so as to achieve the bending effect of the plate at different angles, the lower auxiliary die can be rapidly driven to move in the middle through the driving assembly, the moving time is shortened, and the efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bending machines, in particular to an upper and lower die structure of a hydraulic numerically controlled bending machine. Background Art

[0002] With the continuous development of industry, the requirements for the processing accuracy and efficiency of metal sheets are getting higher and higher. Traditional bending machines mainly rely on manual operation, which is not only difficult to ensure accuracy, but also has low production efficiency. In this case, CNC bending machines came into being. CNC bending machines use advanced CNC technology and can achieve high-precision bending of plates through precise programming control. It can automatically adjust parameters such as bending angle and pressure, greatly improving processing accuracy and consistency. At the same time, the high degree of automation of CNC bending machines can greatly reduce manual operation, improve production efficiency, and reduce labor intensity. In addition, CNC bending machines are also multifunctional and can process plates of various shapes and sizes to meet the needs of different industries. It is widely used in automobile manufacturing, aerospace, electrical manufacturing, construction and other fields, providing strong support for the development of these industries. The bending machine cannot be separated from the upper and lower die structures for bending plates. For example, the patent document with announcement number CN212703755U discloses a stamping die used in a bending machine, including a detachable upper die base and a lower die base fixed on the bending machine, and also includes an upper concave die fixed on the upper die base and movable along the vertical direction with the upper die base, and a lower punch fixed on the lower die base for placing the product. The upper concave die and the lower punch are arranged opposite to each other up and down and are both flat plate structures. The utility model provides a stamping die for use on a bending machine, comprising an upper die base, a lower die base, an upper concave die and a lower punch, wherein the upper concave die is fixedly connected to the bending machine through the upper die base, and can be driven by the bending machine to move up and down relative to the lower punch, thereby completing a simple stamping or stretching operation. The die has a simple structure and is particularly suitable for simple stamping operations on some products with small batches and large sizes. It can not only improve the utilization rate of the bending machine, but also utilize the length of the bending machine to process some large-sized products and reduce the cost of stamping processing. However, the existing die cannot adjust the angle of some larger plates when bending, and it needs to be taken out as a whole before it can be used. It is difficult to replace the die, which affects the work efficiency. Therefore, it is urgent to design an upper and lower die structure of a hydraulic CNC bending machine to solve the above problems. Utility Model Content

[0003] The purpose of the utility model is to provide an upper and lower die structure of a hydraulic CNC bending machine to solve the problem that the existing die proposed in the above background technology cannot adjust the angle of some larger plates when bending, and needs to be taken out as a whole before use, and it is difficult to replace the die, which affects the work efficiency.

[0004] To achieve the above object, the present utility model provides the following technical solutions: A hydraulic numerical control bending machine upper and lower die structure, including an operating table and a hydraulic press. The hydraulic press is installed at the top end of the operating table, and the upper die mechanism is installed at the bottom end of the hydraulic press. The upper die mechanism includes a limit block, and an upper die is inserted into the inside of the limit block. Four groups of screws are provided at the connection between the upper die and the limit block. A backing plate is installed on the tabletop of the operating table, and a lower die mechanism is installed on the upper side of the backing plate. The lower die mechanism includes a lower main die, and the front end of the lower main die is connected to the rear end of a pushing component. The front end of the pushing component penetrates through the bottom side of the lower sub-die, and the lower sub-die is installed at the front end of the backing plate.

[0005] Preferably, the top end of the limit block is installed at the bottom end of the hydraulic press. A T-shaped groove is opened inside the limit block. Two groups of through upper circular holes are opened on both sides of the bottom end of the T-shaped groove. Four groups of limit circular holes are opened vertically above the four groups of upper circular holes.

[0006] Preferably, the upper die is clamped inside the T-shaped groove. An upper bending block is provided at the center of the bottom side of the upper die. Four groups of lower circular holes are opened on both sides of the upper die. The four groups of lower circular holes communicate with the four groups of upper circular holes.

[0007] Preferably, a card slot is opened at the rear side of the top end of the backing plate, and slide rails are installed on both sides of the top end of the backing plate.

[0008] Preferably, a limit sleeve is fixedly provided at the center of the front end of the lower main die, and the bottom end of the lower main die is inserted into the card slot.

[0009] Preferably, both sides of the bottom end of the lower sub-die are installed on the top side of the slide rails. A protruding block is provided at the center of the bottom end of the lower sub-die, and the center of the protruding block penetrates through the center of the pushing component.

[0010] Preferably, the pushing component includes a servo motor. The servo motor is installed at the front side of the top end of the backing plate. The rear end of the servo motor is drivingly connected to a lead screw. A long barrel nut is provided at the center of the lead screw. The rear end of the long barrel nut is fixedly provided at the front bottom side of the lower sub-die. The rear end of the lead screw penetrates through the lower sub-die and is inserted into the limit sleeve.

[0011] Compared with the prior art, the beneficial effects of the present utility model are:

[0012] For this hydraulic numerical control bending machine upper and lower die structure, different types of upper dies can be inserted and installed through the T-shaped groove opened in the limit block, which is more convenient and fast for installation and replacement. The four groups of lower circular holes opened in the upper die can communicate with the upper circular holes opened in the limit block for better adaptation, and the limit block and the upper die can be quickly installed using screws.

[0013] The upper and lower die structure of this hydraulic numerically controlled bending machine can place the lower main die at different angles through the card slots opened on the backing plate, which is convenient for bending different plates. The lower sub-die can move in the slide rail to adjust the angle of the plate, thereby achieving the bending effect of the plate at different angles. The driving component can quickly drive the lower sub-die to move in the middle, reducing the moving time and improving the efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic side view of the present utility model;

[0015] Figure 2 It is an exploded schematic view of the upper die mechanism structure of the present utility model;

[0016] Figure 3 It is a schematic top view of the lower die mechanism structure of the present utility model;

[0017] Figure 4 It is a schematic side sectional view of the lower die mechanism of the present utility model.

[0018] In the figure: 1, operating table; 2, hydraulic press; 3, upper die mechanism; 31, limit block;

[0019] 311, T-shaped groove; 312, upper circular hole; 313, limit circular hole; 32, upper die;

[0020] 321, upper bending block; 322, lower circular hole; 33, screw; 4, backing plate; 41, card slot; 42, slide rail; 5, lower die mechanism; 51, lower main die; 511, limit sleeve; 52, lower sub-die; 521, protruding block; 53, pushing component; 531, servo motor; 532, lead screw; 533, long barrel nut. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0022] Please refer to Figures 1 - 4 , an embodiment provided by the present utility model:

[0023] A structure of the upper and lower dies of a hydraulic numerically controlled bending machine, comprising an operating table 1 and a hydraulic press 2. The hydraulic press 2 is installed at the top end of the operating table 1, and the upper die mechanism 3 is installed at the bottom end of the hydraulic press 2. The upper die mechanism 3 includes a limit block 31, and an upper die 32 is inserted into the inside of the limit block 31. Four groups of screws 33 are provided at the connection between the upper die 32 and the limit block 31 for fixation. A backing plate 4 is installed on the tabletop of the operating table 1, and a lower die mechanism 5 is installed on the upper side of the backing plate 4. The lower die mechanism 5 includes a lower main die 51. The front end of the lower main die 51 is connected to the rear end of a pushing component 53. The front end of the pushing component 53 penetrates through the bottom side of a lower sub-die 52, and the lower sub-die 52 is installed at the front end of the backing plate 4.

[0024] As a further improvement of the present utility model, the top end of the limit block 31 is installed at the bottom end of the hydraulic press 2. A T-shaped groove 311 is opened inside the limit block 31. Two groups of through upper circular holes 312 are opened on both sides of the bottom end of the T-shaped groove 311. Four groups of limit circular holes 313 are opened vertically above the four groups of upper circular holes 312. The upper die 32 is clamped inside the T-shaped groove 311. An upper bending block 321 is provided at the center of the bottom side of the upper die 32. Four groups of lower circular holes 322 are opened on both sides of the upper die 32. The four groups of lower circular holes 322 communicate with the four groups of upper circular holes 312, which is convenient for replacing the upper die and facilitates installation to improve efficiency.

[0025] Furthermore, a card slot 41 is opened at the rear side of the top end of the backing plate 4, and slide rails 42 are installed on both sides of the top end of the backing plate 4, which can place the lower main die at different angles to facilitate bending different plates.

[0026] As a further improvement of the present utility model, a limit sleeve 511 is fixedly provided at the center of the front end of the lower main die 51. The bottom end of the lower main die 51 is inserted into the card slot 41. The bottom ends of both sides of the lower sub-die 52 are installed on the top side of the slide rails 42. A protruding block 521 is provided at the center of the bottom end of the lower sub-die 52. The center of the protruding block 521 penetrates through the center of the pushing component 53. The pushing component 53 includes a servo motor 531, which is installed at the front side of the top end of the backing plate 4. The rear end of the servo motor 531 is drivingly connected to a lead screw 532. A long barrel nut 533 is provided at the center of the lead screw 532. The rear end of the long barrel nut 533 is fixedly provided at the front bottom end of the lower sub-die 52. The rear end of the lead screw 532 penetrates through the lower sub-die 52 and is inserted into the limit sleeve 511. The lower sub-die can move in the slide rails to adjust the angle of the plate, thereby achieving the bending effect of the plate at different angles.

[0027] Working principle: When in use, the operator first places the sheet on the upper sides of the lower main die 51 and the lower auxiliary die 52 in the lower die mechanism 3, and then powers on and starts the hydraulic press 2 to lower the upper die mechanism 3. When the upper die 32 descends, the upper bending block 321 at the bottom can drive the sheet at the bottom to be bent. When it is necessary to replace or repair the upper bending block 321, first turn and remove the four screws 33 at the bottom end of the limit block 31, and then the upper die 32 can be taken out. Subsequently, the upper die 32 to be replaced is pushed into the T-shaped groove 311 inside the limit block 31. Then, after aligning the four lower circular holes 322 opened on both sides of the upper die 32 with the four upper circular holes 312 opened in the T-shaped groove 311, the screws 33 can be used to penetrate and be threadedly fixed in the limit circular holes 313. When it is necessary to replace the lower main die 51, it can be replaced only by pulling it out of the card slot 41 opened in the backing plate 4. When the sheet needs to be bent at other angles, only need to start the servo motor 531 to drive the lead screw 532 to rotate, and when the lead screw 532 rotates, it can drive the installed long barrel nut 533 to push backward in the lower auxiliary die 52, so as to adjust the distance between the lower auxiliary die 52 and the lower main die 51, thereby adjusting the bending of the sheet. The above is all the working principle of the present utility model.

[0028] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present utility model, the present utility model can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be encompassed within the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. A hydraulic CNC bending machine upper and lower die structure, comprising an operating table (1) and a hydraulic press (2), wherein the hydraulic press (2) is installed on the top of the operating table (1), characterized in that: An upper die mechanism (3) is installed at the bottom end of the hydraulic press (2), and the upper die mechanism (3) includes a limit block (31), an upper die (32) is inserted inside the limit block (31), and the connection between the upper die (32) and the limit block (31) is fixed by four groups of screws (33). The table top of the operating table (1) is installed with a pad (4), and the upper side of the pad (4) is installed with a lower die mechanism (5), and the lower die mechanism (5) includes a lower main die (51), the front end of the lower main die (51) is connected to the rear end of a pushing component (53), the front end of the pushing component (53) passes through the bottom side of the lower auxiliary die (52), and the lower auxiliary die (52) is installed at the front end of the pad (4).

2. The upper and lower die structures of a hydraulic CNC bending machine according to claim 1 are characterized in that: The top end of the limit block (31) is mounted on the bottom end of the hydraulic press (2), a T-shaped groove (311) is provided inside the limit block (31), two groups of penetrating upper circular holes (312) are provided on both sides of the bottom end of the T-shaped groove (311), and four groups of limit circular holes (313) are provided vertically above the four groups of upper circular holes (312).

3. The upper and lower die structures of a hydraulic CNC bending machine according to claim 1 are characterized in that: The upper mold (32) is clamped inside the T-shaped groove (311), an upper bending block (321) is provided at the center of the bottom side of the upper mold (32), four groups of lower circular holes (322) are opened on both sides of the upper mold (32), and the four groups of lower circular holes (322) are connected to the four groups of upper circular holes (312).

4. The upper and lower die structures of a hydraulic CNC bending machine according to claim 1 are characterized in that: A slot (41) is provided at the rear side of the top end of the pad (4), and slide rails (42) are installed on both sides of the top end of the pad (4).

5. The upper and lower die structures of a hydraulic CNC bending machine according to claim 1 are characterized in that: A limiting sleeve (511) is fixedly arranged at the front end center of the lower main mold (51), and the bottom end of the lower main mold (51) is inserted into the inside of the clamping groove (41).

6. The upper and lower die structures of a hydraulic CNC bending machine according to claim 1 are characterized in that: Both sides of the bottom end of the lower auxiliary mold (52) are installed on the top side of the slide rail (42), and a protruding block (521) is provided at the center of the bottom end of the lower auxiliary mold (52), and the center of the protruding block (521) passes through the center of the pushing component (53).

7. The upper and lower die structures of a hydraulic CNC bending machine according to claim 1 are characterized in that: The pushing assembly (53) comprises a servo motor (531), which is mounted on the front side of the top end of the pad (4). The rear end of the servo motor (531) drives a connecting screw rod (532). A long tube nut (533) is provided at the center of the screw rod (532). The rear end of the long tube nut (533) is fixed to the bottom side of the front end of the lower auxiliary mold (52). The rear end of the screw rod (532) passes through the lower auxiliary mold (52) and is inserted into the limiting sleeve (511).

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