Multi-point compensation workbench device of bending machine

Abstract

The utility model discloses a multi-point compensation workbench device of a bending machine, which relates to the field of compensation of bender workbenches and comprises a workbench, the workbench is of a hollow structure, the top end of the workbench is of an opening structure, a sealing plate is fixedly mounted in the opening of the workbench, a middle block is arranged at the bottom end of the inner wall of the workbench, and the middle block is fixedly connected with the workbench. Wedge block mechanisms are slidably connected to the positions, located on the two sides of the middle block, of the bottom end of the inner wall of the workbench, the wedge block mechanisms penetrate to the position above the sealing plate, and square grooves allowing the wedge block mechanisms to penetrate through are formed in the sealing plate. And a positioning mechanism for positioning the bottom ends of the middle block and the wedge block mechanism is mounted at the bottom end of the inner wall of the worktable. According to the utility model, through the arrangement of the positioning mechanism, the lower wedge block can be mounted at an initial position in the mounting process, so that slightly undetectable dislocation of the lower wedge block and the upper wedge block is avoided, and the problem that the compensation precision is reduced is avoided.

Description

Technical Field

[0001] This utility model relates to the field of compensation for bending machine worktables, specifically a multi-point compensation worktable device for bending machines. Background Technology

[0002] The moving plate of a bending machine is usually equipped with two cylinders at both ends. Therefore, when the upper die moves downward, the force applied to the workpiece at both ends is greater, while the force applied to the middle is smaller. This will cause the middle bending position of the workpiece to be bent to be incomplete, that is, greater than the preset bending angle, and the deviation from the bending angle at both ends is generally between 1 and 3 degrees.

[0003] In existing technology, a wedge mechanism is added to the worktable to achieve bending compensation by using the inclined surface between the upper and lower wedges. However, the upper and lower wedges will wear excessively during long-term use, so regular maintenance and replacement of unqualified wedges are required. When installing a new wedge after replacement, it is necessary to reposition it and ensure that it is installed in the preset position. The lower wedge generally only needs to be flush with the upper wedge in the vertical direction. This method will cause a slight misalignment, which will affect the compensation accuracy in subsequent use. Utility Model Content

[0004] The purpose of this utility model is to provide a multi-point compensation workbench device for a bending machine in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a multi-point compensation workbench device for a bending machine, comprising a workbench, the workbench having a hollow structure and an open top, a sealing plate fixedly installed inside the opening of the workbench, a middle block provided at the bottom of the inner wall of the workbench, and wedge mechanisms slidably connected to both sides of the bottom of the inner wall of the workbench on the middle block, the wedge mechanisms extending through to the top of the sealing plate, and a square groove for the wedge mechanisms to pass through inside the sealing plate;

[0006] The bottom of the inner wall of the workbench is equipped with a positioning mechanism for positioning the bottom of the intermediate block and the wedge mechanism. The positioning mechanism is used to assist the wedge mechanism and the intermediate block in being installed in a preset position.

[0007] As a further embodiment of this utility model: the wedge mechanism includes a lower wedge block slidably connected to the inner wall of the worktable, an upper wedge block slidably connected above the lower wedge block, the upper wedge block being slidably connected to the worktable, and the top of the upper wedge block being located in a square groove.

[0008] As a further embodiment of this utility model: the wedge mechanism further includes vertical sliders fixedly connected to both sides of the upper wedge, and vertical sliding grooves are provided on both sides of the inner wall of the worktable for the vertical sliders to slide up and down. Horizontal sliders are integrally formed on both sides of the lower wedge, and horizontal sliding grooves are provided on both sides of the inner wall of the worktable for the horizontal sliders to slide axially.

[0009] As a further embodiment of this utility model: the top of the upper wedge block is integrally formed with a connecting column, the top of the connecting column is spherical, a connecting plate is provided above the workbench, and a connecting groove is provided at the bottom of the connecting plate to mate with the connecting column, the vertical cross-section of the connecting groove matches the vertical cross-section of the connecting column.

[0010] As a further embodiment of this utility model: the positioning mechanism includes a first receiving groove opened at the center of the bottom end of the inner wall of the workbench, a first positioning block is fixedly connected to the inner wall of the first receiving groove, the top end of the first positioning block penetrates into the inner cavity of the workbench, and a positioning groove is opened at the bottom end of the middle block to connect with the top of the first positioning block.

[0011] As a further embodiment of this utility model: the positioning mechanism further includes a second receiving groove formed at the bottom of the inner wall of the workbench, and multiple second receiving grooves are symmetrically distributed on both sides of the first receiving groove. The second receiving groove is located below the lower wedge block. A spring is fixedly connected to the bottom of the inner wall of the second receiving groove, and a second positioning block is fixedly connected to the top of the spring and slidably connected to the second receiving groove. The top of the second positioning block extends through the inner cavity of the workbench, and the top of the second positioning block has an arc-shaped structure. A positioning groove that matches the outer wall of the top of the second positioning block is formed at the center of the bottom end of the lower wedge block.

[0012] As a further embodiment of this utility model: a screw is rotatably mounted between the two end plates of the workbench, and the screw is threadedly connected to a plurality of the lower wedges.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. By setting a positioning mechanism, the lower wedge can be installed in its initial position during the installation process, avoiding imperceptible misalignment between the lower and upper wedges, thus preventing the problem of reduced compensation accuracy. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0017] Figure 3 This is a schematic diagram of the installation of the screw of this utility model;

[0018] Figure 4 This is a schematic diagram of the sliding installation of the lower wedge block and the upper wedge block of this utility model;

[0019] Figure 5 For the present utility model Figure 3 Enlarged view of a portion of point A in the middle;

[0020] Figure 6 For the present utility model Figure 3 Enlarged view of a section at point B in the middle;

[0021] Figure 7 For the present utility model Figure 4 Enlarged view of a section at point C.

[0022] In the diagram: 1. Workbench; 2. Sealing plate; 3. Connecting plate; 4. Middle block; 5. Upper wedge block; 6. Connecting column; 7. Connecting groove; 8. Vertical slider; 9. Lower wedge block; 10. Horizontal slider; 11. Screw; 12. Vertical slide groove; 13. Second receiving groove; 14. Spring; 15. Second positioning block; 16. First positioning block; 17. Horizontal slide groove; 18. First receiving groove; 19. Positioning groove. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1 to 7In this embodiment of the present invention, a multi-point compensation workbench device for a bending machine includes a workbench 1. The workbench 1 has a hollow structure and an open top. A sealing plate 2 is fixedly installed inside the opening of the workbench 1. A middle block 4 is provided at the bottom of the inner wall of the workbench 1. Wedge mechanisms are slidably connected to both sides of the middle block 4 at the bottom of the inner wall of the workbench 1. The wedge mechanisms extend through to the top of the sealing plate 2. A square groove for the wedge mechanism to pass through is provided inside the sealing plate 2. A positioning mechanism for positioning the middle block 4 and the bottom of the wedge mechanism is installed at the bottom of the inner wall of the workbench 1. The positioning mechanism is used to assist the wedge mechanism and the middle block 4 in being installed in a preset position. The wedge mechanism includes a lower wedge 9 slidably connected to the inner wall of the workbench 1. An upper wedge 5 is slidably connected above the lower wedge 9. The upper wedge 5 is slidably connected to the workbench 1, and the top of the upper wedge 5 is located in the square groove. A screw 11 is rotatably installed between the two end plates of the workbench 1. The screw 11 is threadedly connected to multiple lower wedges 9.

[0025] In this embodiment: when performing bending compensation on the bent part, the servo motor connected to the screw 11 is started. The output shaft of the servo motor is connected to a reducer. The running servo motor transmits torque to the screw 11 through the reducer. The rotating screw 11 drives multiple lower wedges 9 to move synchronously. Since the slope of the pressing slope at the top of the multiple lower wedges 9 gradually decreases from both sides to the middle, the upward movement of the multiple upper wedges 5 through the pressing slope at their bottom is inconsistent. Therefore, the vertical sliding distance of the multiple upper wedges 5 is inconsistent. Specifically, the vertical sliding distance of the upper wedges 5 that are further out is larger. Therefore, the two ends of the connecting plate 3 can be bent. When the two ends of the connecting plate 3 bend downward, the middle part of the bent workpiece is compensated to achieve the purpose of consistent bending angle.

[0026] Please refer to this carefully. Figures 1 to 7 The wedge mechanism also includes vertical sliders 8 fixedly connected to both sides of the upper wedge 5. Vertical sliding grooves 12 are provided on both sides of the inner wall of the worktable 1 for the vertical sliders 8 to slide up and down. Horizontal sliders 10 are integrally formed on both sides of the lower wedge 9. Horizontal sliding grooves 17 are provided on both sides of the inner wall of the worktable 1 for the horizontal sliders 10 to slide axially. A connecting post 6 is integrally formed at the top of the upper wedge 5. The top of the connecting post 6 has a spherical structure. A connecting plate 3 is provided above the worktable 1. A connecting groove 7 is provided at the bottom of the connecting plate 3 to connect with the connecting post 6. The vertical section of the connecting groove 7 matches the vertical section of the connecting post 6.

[0027] In this embodiment: when multiple upper wedges 5 slide downwards synchronously, the upper wedges 5 drive the connecting posts 6 at their tops to move downwards synchronously. Since the connecting posts 6 are hooked in the connecting grooves 7, the multiple connecting posts 6 pull the two ends of the connecting plate 3 downwards. At this time, from a microscopic perspective, the two ends of the connecting plate 3 are downward-facing arc-shaped structures (i.e., the middle position is raised upwards and the two ends are bent downwards), which can compensate for the bending of the workpiece.

[0028] When the lower wedge 9 moves, it drives the horizontal slider 10 to slide axially in the horizontal slide groove 17, while the upper wedge 5 drives the vertical slider 8 to slide up and down in the vertical slide groove 12.

[0029] Please refer to this carefully. Figures 1 to 7 The positioning mechanism includes a first receiving groove 18 located at the center of the bottom of the inner wall of the worktable 1. A first positioning block 16 is fixedly connected to the inner wall of the first receiving groove 18. The top of the first positioning block 16 extends into the inner cavity of the worktable 1. A positioning groove 19 is provided at the bottom of the middle block 4, which is opposite to the top of the first positioning block 16. The positioning mechanism also includes a second receiving groove 13 located at the bottom of the inner wall of the worktable 1. Multiple second receiving grooves 13 are symmetrically distributed on both sides of the first receiving groove 18. The second receiving grooves 13 are located below the lower wedge block 9. A spring 14 is fixedly connected to the bottom of the inner wall of the second receiving groove 13. A second positioning block 15, which is slidably connected to the top of the spring 14, is fixedly connected to the top of the second receiving groove 13. The top of the second positioning block 15 extends through the inner cavity of the worktable 1, and the top of the second positioning block 15 has an arc-shaped structure. A positioning groove 19, which matches the outer wall of the top of the second positioning block 15, is opened at the center of the bottom end of the lower wedge block 9. The connecting plate 3 has a front and rear two-half structure. The ends of the two parts of the connecting plate 3 are fixedly connected to bolts and nuts through protruding plates (e.g.: Figure 2 The connecting plate 3 shown is a half structure.

[0030] In this embodiment: During long-term use of the upper wedge 5 and the lower wedge 9, different wedges will experience different wear, so they need to be inspected and replaced regularly. For regular inspection and replacement, first separate the two parts of the connecting plate 3, at which point the connecting plate 3 can be separated from the connecting post 6. Then remove the sealing plate 2, and finally pull the middle block 4 upwards to remove it.

[0031] Next, remove the end plate of the workbench 1 and the screw 11 between the two end plates. First, remove the two end plates of the workbench 1, and then separate the screw 11 from the two end plates. The end plate of the workbench 1 is connected to the end of the workbench 1 by bolts. Then, the lower wedge 9 can be slid out. Since the vertical slide groove 12 and the horizontal slide groove 17 are connected, after the lower wedge 9 is slid out, the upper wedge 5 above the lower wedge 9 can be slid into the horizontal slide groove 17 along the vertical slide groove 12, and the upper wedge 5 can be slid out.

[0032] After removal, the excessively worn wedges are replaced by inspection, and new upper wedges 5 and lower wedges 9 are installed. The replaced and non-replaceable upper wedges 5 are first slid into the horizontal sliding groove 17 until they are aligned with the vertical sliding groove 12. Then the upper wedges 5 are slid upwards, and the lower wedges 9 are slid into the bottom of the upper wedges 5 through the horizontal sliding groove 17.

[0033] During the sliding of the lower wedge 9, the bottom end of the lower wedge 9 presses the top arc of the second positioning block 15. At this time, the second positioning block 15 is pressed and squeezes the spring 14, and completely enters the second receiving groove 13. When the positioning groove 19 and the second positioning block 15 are aligned, the spring 14 can be reset, driving the second positioning block 15 to be inserted into the positioning groove 19, thus positioning and installing the lower wedge 9. As for the installation of the middle block 4, the top of the first positioning block 16 can be inserted into the positioning groove 19 below.

[0034] This positioning and installation method can ensure the installation accuracy of the lower wedge block 9 and the upper wedge block 5, and there will be no installation offset.

[0035] Furthermore, the design of this positioning mechanism, with the top of the second positioning block 15 having an arc-shaped structure, will not affect the axial movement of the lower wedge block 9.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A multi-point compensation workbench device for a bending machine, comprising a workbench (1), characterized in that, The workbench (1) has a hollow structure and the top of the workbench (1) has an open structure. A sealing plate (2) is fixedly installed inside the opening of the workbench (1). A middle block (4) is provided at the bottom of the inner wall of the workbench (1). A wedge mechanism is slidably connected to both sides of the middle block (4) at the bottom of the inner wall of the workbench (1). The wedge mechanism extends through to the top of the sealing plate (2). A square groove for the wedge mechanism to pass through is opened inside the sealing plate (2). The bottom of the inner wall of the workbench (1) is equipped with a positioning mechanism for positioning the bottom of the intermediate block (4) and the wedge mechanism. The positioning mechanism is used to assist the wedge mechanism and the intermediate block (4) in being installed in a preset position.

2. The multi-point compensation workbench device for a bending machine according to claim 1, characterized in that, The wedge mechanism includes a lower wedge (9) slidably connected to the inner wall of the worktable (1), an upper wedge (5) slidably connected above the lower wedge (9), the upper wedge (5) slidably connected to the worktable (1) vertically, and the top of the upper wedge (5) is located in a square groove.

3. The multi-point compensation workbench device for a bending machine according to claim 2, characterized in that, The wedge mechanism also includes vertical sliders (8) fixedly connected to both sides of the upper wedge (5). The inner wall of the worktable (1) is provided with vertical sliding grooves (12) for the vertical sliders (8) to slide up and down. The lower wedge (9) is integrally formed with horizontal sliders (10) on both sides. The inner wall of the worktable (1) is provided with horizontal sliding grooves (17) for the horizontal sliders (10) to slide axially.

4. The multi-point compensation workbench device for a bending machine according to claim 3, characterized in that, The top of the upper wedge (5) is integrally formed with a connecting column (6), the top of the connecting column (6) is spherical, a connecting plate (3) is provided above the workbench (1), and a connecting groove (7) is provided at the bottom of the connecting plate (3) to connect with the connecting column (6), and the vertical section of the connecting groove (7) matches the vertical section of the connecting column (6).

5. A multi-point compensation workbench device for a bending machine according to claim 4, characterized in that, The positioning mechanism includes a first receiving groove (18) located at the center of the bottom of the inner wall of the workbench (1). A first positioning block (16) is fixedly connected to the inner wall of the first receiving groove (18). The top of the first positioning block (16) extends through the inner cavity of the workbench (1). The bottom of the middle block (4) is provided with a positioning groove (19) that is opposite to the top of the first positioning block (16).

6. The multi-point compensation workbench device for a bending machine according to claim 5, characterized in that, The positioning mechanism also includes a second receiving groove (13) opened at the bottom of the inner wall of the workbench (1). Multiple second receiving grooves (13) are symmetrically distributed on both sides of the first receiving groove (18). The second receiving groove (13) is located below the lower wedge block (9). A spring (14) is fixedly connected to the bottom of the inner wall of the second receiving groove (13). A second positioning block (15) is fixedly connected to the top of the spring (14) and is slidably connected to the second receiving groove (13). The top of the second positioning block (15) extends through the inner cavity of the workbench (1), and the top of the second positioning block (15) has an arc-shaped structure. A positioning groove (19) that matches the outer wall of the top of the second positioning block (15) is opened at the center of the bottom end of the lower wedge block (9).

7. A multi-point compensation workbench device for a bending machine according to claim 6, characterized in that, A screw (11) is rotatably mounted between the two end plates of the workbench (1), and the screw (11) is threadedly connected to a plurality of the lower wedges (9).

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