A bending machine deflection compensation structure

Abstract

The application discloses a deflection compensation structure of a bending machine, which comprises a bending machine frame, a supporting base fixedly arranged at the lower part of the bending machine frame, a deflection compensation assembly fixedly installed on the supporting base, a lower die seat installed on the deflection compensation assembly, a plurality of groups of the deflection compensation assemblies arranged side by side, the deflection compensation assembly comprising two groups of side baffles fixedly arranged at the upper part of the supporting base, a compensation base fixedly arranged between the two groups of side baffles, a lower inclined block fixedly installed on the upper end of the compensation base, and an upper wedge block slidingly arranged between the two groups of side baffles and matched with the lower inclined block; the compensation base is provided with a driving piece for driving the upper wedge block to move up and down; the lower die seat is pressed by the upper wedge block, so that the deflection of the bending machine is compensated, the deflection compensation amount of the workbench is adjusted in real time according to the change of the bending force after the dynamic deflection compensation, and the angle of the workpiece under different loads is kept stable.

Description

Technical Field

[0001] This invention relates to the field of bending machine technology, and more specifically to a bending machine deflection compensation structure. Background Technology

[0002] Bending machines are a type of forging and pressing machinery, primarily used in the metal processing industry. These products are widely applicable to industries such as aerospace, light industry, metallurgy, automotive, power, and electrical appliances, providing specialized machinery and complete sets of equipment.

[0003] Currently, due to increased automation, as long as the rigidity and strength of forging machinery itself meet the work requirements, the weight of the machinery is always designed to be as simple as possible. The application of hydraulic technology has led to the gradual obsolescence of the original design, resulting in increasingly lighter machine structures and significantly reduced costs. However, this also brings many problems. During use, the slider and worktable will experience deflection deformation, causing uneven bending of the processed parts. Moreover, for multi-cylinder, high-tonnage bending machines, the worktable will also deform due to its length and weight. This will cause the depth of the upper die entering the lower die during bending to be inconsistent along the entire bending length, affecting bending accuracy. Therefore, deflection compensation is required for the bending machine.

[0004] A search revealed Chinese patent number ZL201120063045.5, with an authorization announcement date of October 26, 2011, entitled "Bending Machine Deflection Compensation Mechanism." This application includes an upper inclined iron assembly and a lower inclined iron assembly disposed between the bending machine table and the cover plate. The lower inclined iron assembly comprises a certain number of lower inclined irons, all of which are inlaid and fixed on a lower fixed plate. The planes of the lower inclined irons face downwards within the bending machine table, while the inclined surfaces of the lower inclined irons face upwards. The upper inclined iron group includes a certain number of upper inclined irons, all of which are inlaid and fixed on the upper fixed plate and fixed to the cover plate through the fixed plate pad. The upper and lower inclined irons correspond one-to-one, with the inclined surfaces of the upper inclined irons supporting the inclined surfaces of the lower inclined irons. The inclination of all the upper inclined irons in the upper inclined iron group and the inclination of all the lower inclined irons in the lower inclined iron group gradually increase from both sides towards the middle. A power mechanism is installed on one side of the bending machine table, and the power mechanism is connected to the lower fixed plate. This application can achieve deflection compensation by using the power mechanism to drive the lower fixed plate and all the lower inclined iron fixing plates on it to move left and right. However, the drawback of this application is that the transmission device of the mechanism is complex, bulky, and inconvenient to operate. Summary of the Invention

[0005] The purpose of this invention is to provide a deflection compensation structure for a bending machine, thereby solving the technical problem that the deflection compensation transmission mechanism is complex and inconvenient to operate.

[0006] The objective of this invention can be achieved through the following technical solutions:

[0007] A deflection compensation structure for a bending machine includes a bending machine frame. A support base is fixedly installed at the lower part of the bending machine frame. A deflection compensation component is fixedly installed on the support base. A lower die base is installed on the deflection compensation component. Several sets of deflection compensation components are arranged side by side. Each deflection compensation component includes two sets of side baffles fixedly installed on the upper part of the support base. A compensation base is fixedly installed between the two sets of side baffles. A lower inclined block is fixedly installed on the upper end of the compensation base. An upper wedge block that cooperates with the lower inclined block is slidably arranged between the two sets of side baffles. A driving component for driving the upper wedge block to move up and down is provided on the compensation base.

[0008] As a further aspect of the present invention: the upper end of the compensation base is provided with a mounting groove for mounting the driving component, the lower part of the compensation base is provided with a through hole, the bottom of the mounting groove is provided with a connecting through groove that communicates with the through hole, a driving slide plate is slidably disposed at the through hole, and the driving slide plate is connected to the driving component.

[0009] As a further embodiment of the present invention: a seat plate is fixedly provided between the two sets of side baffles, a drive cylinder is fixedly installed on the seat plate, a drive connecting plate is fixedly connected to the output end of the drive cylinder, and the drive connecting plate is fixedly connected to the drive slide plate.

[0010] As a further embodiment of the present invention: the driving component includes a sliding seat slidably disposed in the mounting groove, the lower end of the sliding seat being connected to the driving slide plate via a driving connecting block, and a lifting seat being connected to the sliding seat.

[0011] As a further aspect of the present invention: a lifting slide groove is provided on one side of the sliding seat, and a lifting guide groove is provided on the side wall of the lifting slide groove;

[0012] The lifting seat includes a lifting slide that slides in conjunction with a lifting slide groove. Both sides of the lifting slide are provided with lifting guide rods that slide in conjunction with lifting guide grooves. A lifting top plate is fixedly provided at the upper end of the lifting slide.

[0013] As a further aspect of the present invention: the lower inclined block is provided with a guide groove that cooperates with the lifting top plate, and the lower end of the upper wedge is provided with a drive groove that cooperates with the lifting top plate.

[0014] As a further aspect of the present invention: an inclined surface is provided at the middle of the upper end of the lower inclined block, and horizontal surfaces are provided on both sides of the inclined surface.

[0015] As a further aspect of the present invention: a first spring is fixedly provided on the lifting seat, and the upper end of the first spring is fixedly connected to the lower inclined block.

[0016] As a further embodiment of the present invention: a spring groove is provided at the upper end of the sliding seat, a second spring is fixedly provided in the spring groove, and a spring seat connected to the second spring is fixedly provided at the lower end of the lower inclined block.

[0017] The beneficial effects of this invention are:

[0018] (1) A set of drive slide plates simultaneously drives multiple drive components synchronously. The drive components slide to drive the upper wedge block to move up and down. The upper wedge block presses against the lower die base, thereby compensating for the deflection of the bending machine. After dynamic deflection compensation, the machine tool adjusts the deflection compensation amount of the worktable in real time according to the change of bending force to ensure that the angle of the workpiece remains stable under different loads. Moreover, a single drive slide plate and drive cylinder can realize the synchronous control of multiple drive components. The structure is simple and the operation is convenient.

[0019] (2) Multiple drive components are arranged side by side. Depending on the position of the drive component on the processing table, the required bending deflection compensation varies. Therefore, the length of the lifting top plate at different positions is different. The compensation deflection is determined according to the actual needs to ensure the accuracy of bending deflection compensation.

[0020] (3) The sliding seat drives the lifting seat to slide upward, and the lifting plate on the lifting seat presses against the lower mold seat, thereby realizing the compensation of bending deflection. After bending is completed, the sliding seat rebounds and resets under the action of the drive cylinder, and the lifting seat rebounds and moves downward under the elastic action of the first spring, ensuring that the upper wedge block is reset.

[0021] (4) The second spring serves to buffer the sliding of the sliding seat and assists in the reset of the sliding seat, ensuring that the drive slide plate can stably drive multiple sliding seats synchronously. Attached Figure Description

[0022] The invention will now be further described with reference to the accompanying drawings.

[0023] Figure 1 This is a three-dimensional structural diagram of the entire invention;

[0024] Figure 2 This is a schematic diagram of the overall front view structure of the present invention;

[0025] Figure 3 This is a schematic diagram of the assembly structure of the lower mold base and the deflection compensation component of the present invention;

[0026] Figure 4 This is a cross-sectional structural schematic diagram of the deflection compensation component of the present invention;

[0027] Figure 5 This is a side view of the deflection compensation component of the present invention.

[0028] Figure 6 This is a schematic diagram of the structure of the lower inclined block and the upper wedge block of the present invention;

[0029] Figure 7 This is a schematic diagram of the structure of the sliding seat of the present invention;

[0030] Figure 8 This is a schematic diagram of the assembly structure of the sliding seat and the lifting seat of the present invention;

[0031] Figure 9 This is a schematic diagram of the assembly structure of the lifting seat and the lower inclined block of the present invention.

[0032] In the diagram: 1. Bending machine frame; 2. Support base; 3. Lower die base; 31. Lower bending die; 32. Lower die base plate; 4. Deflection compensation assembly; 41. Side baffle; 42. Compensation base; 421. Through hole; 422. Mounting slot; 423. Connecting through slot; 43. Lower inclined block; 431. Guide through slot; 432. Inclined surface; 433. Horizontal surface; 434. Spring seat; 44. Upper wedge block; 441. Drive slot; 45. Seat plate; 46. 47. Drive cylinder; 48. Drive connecting plate; 49. Drive slide plate; 40. Drive component; 491. Sliding seat; 4911. Spring groove; 4912. Lifting slide groove; 4913. Lifting guide groove; 492. Lifting seat; 4921. Lifting slide; 4922. Lifting top plate; 4923. Lifting guide rod; 493. First spring; 494. Second spring; 495. Drive connecting block; 5. Bending cylinder; 6. Upper pressure seat; 7. Upper mold seat. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Please see Figures 1-3 As shown, the present invention is a deflection compensation structure for a bending machine, including a bending machine frame 1. A support base 2 is fixedly installed at the lower part of the bending machine frame 1. A deflection compensation component 4 is fixedly installed on the support base 2. A lower die base 3 is installed on the deflection compensation component 4. Several sets of deflection compensation components 4 are arranged side by side. The deflection compensation component 4 includes two sets of side baffles 41 fixedly installed on the upper part of the support base 2. A compensation base 42 is fixedly installed between the two sets of side baffles 41. A lower inclined block 43 is fixedly installed on the upper end of the compensation base 42. An upper wedge block 44 that cooperates with the lower inclined block 43 is slidably arranged between the two sets of side baffles 41. A driving component 49 for driving the upper wedge block 44 to move up and down is provided on the compensation base 42.

[0035] The upper part of the bending machine frame 1 is slidably equipped with an upper pressure seat 6, and the lower end of the upper pressure seat 6 is detachably equipped with an upper die seat 7. Two sets of bending cylinders 5 are fixedly installed on the upper part of the bending machine frame 1. The two sets of bending cylinders 5 are symmetrically distributed on both sides of the upper die seat 7. The bending cylinders 5 drive the upper pressure seat 6 and the upper die seat 7 to move up and down, thereby realizing the bending process of the sheet metal.

[0036] To improve bending efficiency and reduce the difficulty of adjusting bending parameters, the dynamic bending force adjustment function can automatically detect the load of the left and right hydraulic cylinders in real time. Even if the workpiece is not located in the middle of the worktable during bending, the machine tool can automatically adjust the pressure of the two bending hydraulic cylinders 5, eliminating the tedious pre-adjustment process and ensuring bending accuracy while improving bending efficiency.

[0037] The bending pressure can be detected at the bending cylinder 5 using a pressure sensor, or it can be evenly distributed at the upper die seat 7 to ensure pressure detection at different bending points.

[0038] When bending of sheet metal is required, the lower die base 3 and the upper die base 7 are installed according to the different bending structures required. The sheet metal to be bent is placed on the lower die base 3, and the upper pressure base 6 and the upper die base 7 are moved downward by the bending cylinder 5. The bending of the sheet metal is achieved by the cooperation of the upper die base 7 and the lower die base 3. The bending pressure can be adjusted by adjusting the pressure of the two bending cylinders 5 to ensure uniform adjustment.

[0039] Please see Figures 3-5 As shown, the upper end of the compensation base 42 is provided with a mounting groove 422 for mounting the driving component 49, the lower part of the compensation base 42 is provided with a through hole 421, the bottom of the mounting groove 422 is provided with a connecting through groove 423 that communicates with the through hole 421, and a driving slide plate 48 is slidably disposed at the through hole 421, and the driving slide plate 48 is connected to the driving component 49.

[0040] A seat plate 45 is fixedly disposed between the two sets of side baffles 41. A drive cylinder 46 is fixedly installed on the seat plate 45. A drive connecting plate 47 is fixedly connected to the output end of the drive cylinder 46. The drive connecting plate 47 is fixedly connected to the drive slide plate 48.

[0041] A set of drive slide plates 48 simultaneously drives multiple drive components 49 synchronously. The drive components 49 slide to drive the upper wedge block 44 to move up and down. The upper wedge block 44 presses against the lower die base 3, thereby compensating for the deflection of the bending machine. After dynamic deflection compensation, the machine tool adjusts the deflection compensation amount of the worktable in real time according to the change of bending force to ensure that the angle of the workpiece remains stable under different loads.

[0042] The lower die base 3 includes a lower die base plate 32, which is detachably and fixedly installed on the support base 2. A bending lower die 31 is fixedly installed on the upper end of the lower die base plate 32. The bending lower die 31 is used to perform bending processing on the sheet metal of different specifications. The bending deflection compensation component 4 is used to compensate for the bending deflection of the lower die base 3, thereby improving the consistency of the bending angle of the workpiece and improving the product quality.

[0043] Please see Figures 6-9 As shown, the driving component 49 includes a sliding seat 491 slidably disposed in the mounting groove 422. The lower end of the sliding seat 491 is connected to the driving slide plate 48 through a driving connecting block 495. A lifting seat 492 is connected to the sliding seat 491.

[0044] A lifting slide groove 4912 is provided on one side of the sliding seat 491, and a lifting guide groove 4913 is provided on the side wall of the lifting slide groove 4912; the lifting seat 492 includes a lifting slide 4921 that slides with the lifting slide groove 4912, and lifting guide rods 4923 that slide with the lifting guide grooves 4913 are provided on both sides of the lifting slide 4921; a lifting top plate 4922 is fixedly provided on the upper end of the lifting slide 4921.

[0045] The lower inclined block 43 is provided with a guide groove 431 that cooperates with the lifting top plate 4922, and the lower end of the upper wedge block 44 is provided with a drive groove 441 that cooperates with the lifting top plate 4922. The drive groove 441 is provided so that the lifting top plate 4922 can be inserted into it when it rises, thereby effectively ensuring the stable drive of the upper wedge block 44.

[0046] Multiple drive components 49 are arranged side by side. Depending on the position of the drive component 49 on the processing table, the required amount of bending deflection compensation varies. Therefore, the length of the lifting top plate 4922 at different positions is different. The amount of deflection compensation is determined according to the actual needs to ensure the accuracy of bending deflection compensation.

[0047] The lower inclined block 43 has an inclined surface 432 at the middle of its upper end, and horizontal surfaces 433 are provided on both sides of the inclined surface 432. The lower end of the upper wedge block 44 also has an inclined surface 432 and a horizontal surface 433 at the same position.

[0048] When deflection compensation is not required, the lower end of the upper wedge 44 is attached to the upper end of the lower inclined block 43. The inclined surface 432 facilitates the sliding of the upper wedge 44 to the lower inclined block 43. The inclined surface 432 can limit the lifting and sliding of the upper wedge 44, ensuring that the lifting and lowering of the upper wedge 44 remains stable. At the same time, the horizontal surfaces 433 set at both ends of the inclined surface 432 also limit the upper wedge 44, ensuring stable deflection compensation for the bending of the sheet metal.

[0049] A first spring 493 is fixedly installed on the lifting seat 492, and the upper end of the first spring 493 is fixedly connected to the lower inclined block 43.

[0050] The sliding seat 491 drives the lifting seat 492 to slide upward. The lifting top plate 4922 on the lifting seat 492 presses against the lower mold seat 3, thereby compensating for the bending deflection. After bending is completed, the sliding seat 491 rebounds and resets under the action of the drive cylinder 46, and the lifting seat 492 rebounds and moves downward under the elastic action of the first spring 493, ensuring that the upper wedge block 44 is reset.

[0051] The upper end of the sliding seat 491 is provided with a spring groove 4911, and a second spring 494 is fixedly installed in the spring groove 4911. The lower end of the lower inclined block 43 is fixedly provided with a spring seat 434 connected to the second spring 494.

[0052] The drive cylinder 46 drives the drive connecting plate 47 and the drive slider 48 to slide. The drive slider 48 is simultaneously connected to multiple drive components 49, which drive the drive components 49 to slide in the mounting groove 422, thereby driving the lifting seat 492 to move up and down, realizing the lifting drive of the upper wedge block 44. The upper wedge block 44 presses against the lower mold base 3 to achieve deflection compensation. The second spring 494 plays a buffering role on the sliding of the sliding seat 491 on the one hand, and plays an auxiliary role when the sliding seat 491 is reset on the other hand, ensuring that the drive slide plate 48 stably drives multiple sliding seats 491 synchronously.

[0053] The working principle of this invention is as follows: When deflection compensation is required for bending, the drive cylinder 46 drives the drive connecting plate 47 and the drive slider 48 to slide. The drive slider 48 is simultaneously connected to multiple drive components 49, which drive the drive components 49 to slide in the mounting groove 422, thereby driving the lifting seat 492 to move up and down, realizing the lifting drive of the upper wedge block 44. The upper wedge block 44 is used to press the lower die seat 3, thereby compensating for the deflection of the bending machine. After dynamic deflection compensation, the machine tool adjusts the deflection compensation amount of the worktable in real time according to the change of bending force to ensure that the angle of the workpiece remains stable under different loads.

[0054] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A deflection compensation structure for a bending machine, comprising a bending machine frame (1), wherein a support base (2) is fixedly disposed on the lower part of the bending machine frame (1), a deflection compensation component (4) is fixedly installed on the support base (2), and a lower die base (3) is installed on the deflection compensation component (4), characterized in that, The deflection compensation components (4) are arranged in several groups side by side. The deflection compensation components (4) include two groups of side baffles (41) fixedly installed on the upper part of the support base (2). A compensation base (42) is fixedly installed between the two groups of side baffles (41). A lower inclined block (43) is fixedly installed on the upper end of the compensation base (42). An upper wedge block (44) that cooperates with the lower inclined block (43) is slidably installed between the two groups of side baffles (41). A driving component (49) for driving the upper wedge block (44) to move up and down is provided on the compensation base (42). The driving component (49) includes a sliding seat (491) slidably disposed in a mounting groove (422). The lower end of the sliding seat (491) is connected to the driving slide plate (48) via a driving connecting block (495). A lifting seat (492) is connected to the sliding seat (491). A lifting slide groove (4912) is provided on one side of the sliding seat (491), and a lifting guide groove (4913) is provided on the side wall of the lifting slide groove (4912). The lifting seat (492) includes a sliding seat (4913) connected to the lifting slide groove (4912). 12) A sliding sliding block (4921) is provided on both sides of the sliding block (4921) with a lifting guide rod (4923) that slides with the lifting guide groove (4913). A lifting top plate (4922) is fixedly provided on the upper end of the sliding block (4921). A guide groove (431) that cooperates with the lifting top plate (4922) is provided on the lower inclined block (43). A drive groove (441) that cooperates with the lifting top plate (4922) is provided on the lower end of the upper wedge block (44). The upper end of the compensation base (42) is provided with a mounting groove (422) for mounting the drive component (49), and the lower part of the compensation base (42) is provided with a through hole (421). The bottom of the mounting groove (422) is provided with a connecting through groove (423) that communicates with the through hole (421). A drive slide plate (48) is slidably provided at the through hole (421), and the drive slide plate (48) is connected to the drive component (49). The lower inclined block (43) has an inclined surface (432) at the middle of its upper end, and horizontal surfaces (433) are provided on both sides of the inclined surface (432); a first spring (493) is fixedly provided on the lifting seat (492), and the upper end of the first spring (493) is fixedly connected to the lower inclined block (43).

2. The bending machine deflection compensation structure according to claim 1, characterized in that, A seat plate (45) is fixedly arranged between the two sets of side baffles (41). A drive cylinder (46) is fixedly installed on the seat plate (45). A drive connecting plate (47) is fixedly connected to the output end of the drive cylinder (46). The drive connecting plate (47) is fixedly connected to the drive slide plate (48).

3. The bending machine deflection compensation structure according to claim 1, characterized in that, The upper end of the sliding seat (491) is provided with a spring groove (4911), and a second spring (494) is fixedly provided in the spring groove (4911). The lower end of the inclined block (43) is fixedly provided with a spring seat (434) connected to the second spring (494).

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