Feed depth adjusting mechanism of bending machine

Abstract

The utility model discloses a feed depth adjusting mechanism of a bending machine, which relates to the technical field of feed depth adjustment and particularly comprises two parallel supports, the tops of the two supports are connected through a support beam, a hydraulic cylinder is mounted in the middle of one side of the support beam through a first cylinder seat, and the bottom of the hydraulic cylinder is connected with a mounting beam through a second cylinder seat. The mounting beam is horizontally arranged, and a bending upper die is arranged on one side of the mounting beam; supporting guide rails are installed on one side face of the support, and each supporting guide rail is sequentially provided with a first sliding block and a second sliding block from top to bottom. During use, after the upper die descends to a preset depth, the second support can be in contact with the top seat to be sensed by the sensor, and the hydraulic cylinder stops descending at the moment; and the lower die can be prevented from further descending to impact the lower die, so that the lower die can be protected, and the deformation of the upper die caused by impact is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of feed depth adjustment, in particular to a feed depth adjustment mechanism for a bending machine. Background Art

[0002] CNC bending machine uses the equipped mold (general or special mold) to bend the cold metal sheet into workpieces of various geometric cross-sectional shapes. It is a sheet forming machine designed for cold rolled sheet metal processing and is widely used in sheet bending processing in industries such as automobiles, aircraft manufacturing, light industry, shipbuilding, containers, elevators, and railway vehicles.

[0003] In the process of bending the plate, the upper die and the lower die are pressed together to bend the plate into the required shape. However, the lower knife depth of the existing bending machine is not easy to adjust, resulting in insufficient bending accuracy. In addition, the driving component of the upper die is a hydraulic cylinder. After long-term use, the hydraulic cylinder will leak oil, which will cause the hydraulic cylinder to release pressure, which will cause the upper die to fall on the lower die, causing the two to impact each other, resulting in deformation of the upper and lower dies.

[0004] For example, the patent application number "202220436484.4" proposes a feed depth adjustment mechanism for a press brake, in which the inner limit rod can be extended and retracted on the outer limit rod, and can be adjusted by corresponding fixed screw grooves and fixed screw holes at different positions. The adjustment height of this scheme is not accurate enough, and setting the inner limit rod and the outer limit rod on the outside of both ends of the press brake will hinder the normal operation of the press brake, and the inner limit rod and the outer limit rod cannot hinder the ability of the upper and lower dies to squeeze due to the pressure relief of the hydraulic cylinder. To this end, we propose a feed depth adjustment mechanism for a press brake. Utility Model Content

[0005] In view of the disadvantage that the existing bending machine is prone to fall quickly after the hydraulic cylinder is depressurized, causing the upper and lower molds to impact, the utility model provides a bending machine feed depth adjustment mechanism, which has the advantages of adjusting the feed depth and preventing the upper and lower molds from impacting, and solves the problems raised in the above background technology.

[0006] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] A bending machine feed depth adjustment mechanism is designed, comprising two parallel brackets, the tops of the two brackets are connected by a support beam, a hydraulic cylinder is installed in the middle of one side of the support beam through a first cylinder seat, the bottom of the hydraulic cylinder is connected to the mounting beam through a second cylinder seat, the mounting beam is horizontally arranged, and a bending upper mold is provided on one side of the mounting beam;

[0008] A support rail is installed on one side of the bracket, and each support rail is provided with a first slider and a second slider in sequence from top to bottom. Both ends of the mounting beam are connected to the first slider respectively, a second support is vertically provided at the bottom of the first slider, and a top seat is vertically provided at the top of the second slider;

[0009] A first support is installed in the middle of the second sliding block, and a support screw is vertically installed at the bottom of each first support, and the bottom of the support screw is slidably placed in the support seat. The two support seats are respectively installed at the bottom of the side of the bracket, and an adjustment seat is rotatably provided on the top of the support seat that is coaxial with the support screw and threadedly connected;

[0010] Among them, an installation cavity is provided on the top of the top seat, and a sensor is installed in the installation cavity. The sensor is electrically connected to the controller, and the controller is electrically connected to the hydraulic cylinder. The hydraulic cylinder drives the bending upper mold to move downward, and the bending upper mold stops descending when the second support contacts the top seat.

[0011] Preferably, the bending upper mold comprises a mounting plate mounted on the side of the mounting beam, a plurality of upper mold seats are mounted on the bottom edge of the mounting plate, and the bottom of the upper mold seat is connected to the top of the upper mold.

[0012] Preferably, the bottom of the bracket is installed on the top of the frame, a workbench is provided on the top of the frame, and a lower mold corresponding to the bending upper mold is installed at the edge of the workbench.

[0013] Preferably, a control cabinet is installed on the side of one of the brackets, the controller is arranged in the control cabinet, and a display and operation buttons connected to the controller are also arranged on the surface of the control cabinet.

[0014] Preferably, an annular cavity is provided at the bottom of the adjusting seat, the annular cavity is mounted on the annular seat through a bearing, the supporting screw is coaxially disposed in the annular seat, and the annular seat is mounted on the supporting seat.

[0015] Preferably, the top of the adjustment seat is a regular hexagonal structure.

[0016] Preferably, a fastening nut is provided between the bottom of the support screw and the adjustment seat.

[0017] Compared with the prior art, during use, when the utility model is in use, after the upper mold descends to a preset depth, the second support will contact the top seat and be sensed by the sensor, and the hydraulic cylinder will stop descending at this time; if a hydraulic cylinder pressure relief event occurs, the second supports at both ends of the mounting beam will be located above the second slider and the top seat, thereby preventing the lower mold from further descending and causing impact on the lower mold, thereby protecting the lower mold and avoiding deformation of the upper mold caused by the impact. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the front part of the utility model.

[0019] Figure 2 It is a structural schematic diagram of the rear part of the utility model.

[0020] Figure 3 It is a schematic diagram of the specific installation structure of the support screw in the utility model.

[0021] In the figure: 1. frame; 2. adjustment seat; 3. second slide block; 4. control cabinet; 5. support beam; 6. first cylinder seat; 7. hydraulic cylinder; 8. second cylinder seat; 9. upper die seat; 10. upper die; 11. lower die; 12. support seat; 13. support screw; 14. mounting plate; 15. mounting beam; 16. bracket; 17. support rail; 18. first slide block; 19. mounting cavity; 20. sensor; 21. top seat; 22. first support; 23. second support; 24. annular cavity; 25. annular seat; 26. workbench. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figures 1 to 3 The utility model provides a technical solution: a feed depth adjustment mechanism for a bending machine, comprising two parallel brackets 16, the tops of the two brackets 16 are connected by a support beam 5, a hydraulic cylinder 7 is installed in the middle of one side of the support beam 5 through a first cylinder seat 6, the bottom of the hydraulic cylinder 7 is connected to a mounting beam 15 through a second cylinder seat 8, the mounting beam 15 is horizontally arranged, and a mounting plate 14 is provided on one side of the mounting beam 15, the bottom edge of the mounting plate 14 is connected to the top of an upper die 10 through a plurality of upper die seats 9, the mounting plate 14 and the upper die 10 constitute a bending upper die of the bending machine, and realize up and down reciprocating motion under the drive of the hydraulic cylinder 7.

[0024] In order to support the mounting beam 15, as Figure 1 As shown, a support rail 17 is installed on one side surface of the bracket 16, and a first slider 18 is arranged on each support rail 17. Both ends of the mounting beam 15 are connected to the first slider 18 respectively. A second support 23 is vertically arranged at the bottom of the first slider 18. A second slider 3 is arranged on the support rail 17 below the first slider 18, and a top seat 21 is vertically arranged on the top of the second slider 3. When the first slider 18 is lowered, the first slider 18 and the second support 23 are seated above the second slider 3 and the top seat 21.

[0025] A first support 22 is installed in the middle of the second slider 3, and a support screw 13 is vertically installed at the bottom of each first support 22. The bottom of the support screw 13 is slidably placed in the support seat 12. The two support seats 12 are respectively installed at the bottom of the side of the bracket 16. The top of the support seat 12 is rotatably provided with an adjustment seat 2 that is coaxial with the support screw 13 and threadedly connected. Figure 3 As shown, an annular cavity 24 is provided at the bottom of the adjustment seat 2, and the annular cavity 24 is installed on the annular seat 25 through a bearing. The support screw 13 is coaxially placed in the annular seat 25, and the annular seat 25 is installed on the support seat 12. Therefore, when the adjustment seat 2 is rotated, the support screw 13 can be driven to rise and fall along the support seat 12, so as to adjust the height of the second slider 3 and the top seat 21.

[0026] like Figure 1 As shown, in order to facilitate the use of a wrench to twist the adjustment seat 2, the top of the adjustment seat 2 is a regular hexagonal structure, and the bottom of the support screw 13 is fastened to the adjustment seat 2 by a fastening nut. When the second slider 3 needs to be adjusted, only the fastening nut needs to be loosened.

[0027] like Figure 1 As shown, a mounting cavity 19 is provided on the top of the top seat 21, and a sensor 20 is installed in the mounting cavity 19. The sensor 20 is electrically connected to the controller, and the controller is electrically connected to the hydraulic cylinder 7. The hydraulic cylinder 7 drives the upper bending mold to move downward, and the upper bending mold stops descending after the second support 23 contacts the top seat 21. It should be noted that the sensor 20 is completely installed in the mounting cavity 19, so as to avoid damage caused by direct contact between the sensor 20 and the second support 23. The sensor 20 can be an infrared sensor, a proximity sensor, etc.

[0028] Specifically, when the utility model is in use, the hydraulic cylinder 7 drives the upper die 10 to move up and down along the support rail 17. When the upper die is lowered to a preset depth, the second support 23 at the bottom of the first slide 18 will contact the top seat 21 and be sensed by the sensor 20. At this time, the hydraulic cylinder 7 stops descending. At this time, the bending process of the descending tool depth surface is completed, and the tool can be raised and retracted;

[0029] The height of the first support 22 can also be adjusted by adjusting the extension and retraction of the support screw 13. Most importantly, the second slider 3 and the top seat 21 are supported by the support screw 13. If the hydraulic cylinder 7 releases pressure, the mounting beam 15 will fall along the support guide rail 17. At this time, the second supports 23 at both ends of the mounting beam 15 will be located above the second slider 3 and the top seat 21, which can prevent the lower mold from further descending and causing an impact on the lower mold, thereby protecting the lower mold and avoiding deformation of the upper mold caused by the impact.

[0030] The above part only describes the process of hydraulic cylinder driving the upper die to adjust the feed depth, and the bending machine can only be formed when the bracket is installed on the top of the frame, that is, the bottom of the bracket 16 is installed on the top of the frame 1, and a workbench 26 is provided on the top of the frame 1. A lower die 11 corresponding to the upper bending die is installed at the edge of the workbench 26. The lower die 11 corresponds to the upper die. When the upper die descends, the descending depth just matches the bending depth of the lower die.

[0031] like Figure 1 As shown, a control cabinet 4 is installed on the side of one of the brackets 16, and a controller is arranged in the control cabinet 4. A display and operation buttons connected to the controller are also provided on the surface of the control cabinet 4. The frame can be used to install the control part, such as a hydraulic station for controlling the hydraulic cylinder.

[0032] In the description of the present utility model, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. Furthermore, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not expressly listed, or also includes elements inherent to such process, method, article, or apparatus.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A press brake feed depth adjustment mechanism, comprising two brackets (16) arranged in parallel, the tops of the two brackets (16) are connected by a support beam (5), a hydraulic cylinder (7) is installed in the middle of one side of the support beam (5) through a first cylinder seat (6), characterized in that: The bottom of the hydraulic cylinder (7) is connected to the mounting beam (15) through the second cylinder seat (8); the mounting beam (15) is arranged horizontally, and a bending upper mold is arranged on one side of the mounting beam (15); A support rail (17) is installed on one side surface of the bracket (16), and each support rail (17) is provided with a first slider (18) and a second slider (3) in order from top to bottom. Both ends of the mounting beam (15) are respectively connected to the first slider (18), a second support (23) is vertically provided at the bottom of the first slider (18), and a top seat (21) is vertically provided at the top of the second slider (3); A first support (22) is installed in the middle of the second sliding block (3), and a support screw (13) is vertically installed at the bottom of each first support (22), and the bottom of the support screw (13) is slidably placed in the support seat (12). The two support seats (12) are respectively installed at the bottom of the side of the bracket (16), and the top of the support seat (12) is rotatably provided with an adjustment seat (2) coaxial with the support screw (13) and threadedly connected; Wherein, a mounting cavity (19) is provided at the top of the top seat (21), a sensor (20) is installed in the mounting cavity (19), the sensor (20) is electrically connected to the controller, the controller is electrically connected to the hydraulic cylinder (7), the hydraulic cylinder (7) drives the bending upper mold to move downward, and the bending upper mold stops descending when the second support (23) contacts the top seat (21).

2. The feed depth adjustment mechanism of a bending machine according to claim 1 is characterized in that: The bending upper mold comprises a mounting plate (14) mounted on the side of a mounting beam (15), a plurality of upper mold seats (9) are mounted on the bottom edge of the mounting plate (14), and the bottom of the upper mold seat (9) is connected to the top of the upper mold (10).

3. The feed depth adjustment mechanism of a bending machine according to claim 2 is characterized in that: The bottom of the bracket (16) is installed on the top of the frame (1), and a workbench (26) is provided on the top of the frame (1). A lower mold (11) corresponding to the bending upper mold is installed at the edge of the workbench (26).

4. The feed depth adjustment mechanism of a bending machine according to claim 1 is characterized in that: A control cabinet (4) is installed on the side of one of the brackets (16), and a controller is arranged in the control cabinet (4). A display and operation buttons connected to the controller are also arranged on the surface of the control cabinet (4).

5. The feed depth adjustment mechanism of a bending machine according to claim 1 is characterized in that: An annular cavity (24) is provided at the bottom of the adjusting seat (2), the annular cavity (24) is mounted on the annular seat (25) via a bearing, the supporting screw (13) is coaxially arranged in the annular seat (25), and the annular seat (25) is mounted on the supporting seat (12).

6. The feed depth adjustment mechanism of a bending machine according to claim 2, characterized in that: The top of the adjustment seat (2) is a regular hexagonal structure.

7. The feed depth adjustment mechanism of a bending machine according to claim 1, characterized in that: A fastening nut is provided between the bottom of the supporting screw rod (13) and the adjusting seat (2).

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