A bending tool for a plate bending machine

Abstract

The utility model relates to a kind of bending tool for plate bending machine in the field of plate bending, comprising:C type machine base;C type tool holder, it is longitudinally and vertically movably arranged in the inside of C type machine base, the opening direction of C type tool holder is consistent with the opening direction of C type machine base;Main cutter, straddling the front end of C type tool holder, for bending workpiece;Auxiliary cutter mounting seat, it is laterally movably arranged in the inside of C type tool holder;Auxiliary cutter, it is arranged in the front end of auxiliary cutter mounting seat, the front end of auxiliary cutter is slidably buckled on the side of main cutter away from C type tool holder, for bending workpiece;The utility model can be bent by main cutter to the whole side of workpiece, by the lateral movement of auxiliary cutter to the local area of workpiece and bend, the cooperative action of this main, auxiliary cutter, so that some originally need multiple equipment or multiple processes to complete complex bending process, can be clamped once, continuously complete on the device, significantly improve processing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of sheet metal bending technology, and in particular to a bending cutter for a sheet metal bending machine. Background Technology

[0002] Sheet bending is a crucial process in metal sheet forming and processing, and its processing quality and efficiency directly affect the manufacturing level of the product. The bending machine is the core equipment for achieving sheet bending, and the bending cutter is the key component of the bending machine; its structural design directly determines the capabilities and limitations of the bending process.

[0003] Currently, common bending machine cutters typically employ a fixed upper cutter and lower die assembly. The downward pressing motion of the upper cutter causes plastic deformation of the sheet metal between the upper and lower dies, thereby achieving the desired bending angle. However, these traditional cutters have relatively limited functionality, primarily suitable for simple straight-line bending. When processing complex multi-segment bending contours of sheet metal, it is often necessary to change different dies or complete multiple processes sequentially on different equipment, resulting in cumbersome processing procedures, low production efficiency, and large cumulative positioning errors.

[0004] To address this, we designed a bending cutter for a sheet metal bending machine. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, this utility model discloses a bending cutter for a sheet metal bending machine.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A bending cutter for a sheet metal bending machine, comprising:

[0008] C-type base;

[0009] The C-shaped tool holder is movably disposed longitudinally and vertically inside the C-shaped machine base, and the opening direction of the C-shaped tool holder is consistent with the opening direction of the C-shaped machine base;

[0010] The main blade, spanning the front end of the C-shaped tool holder, is used to bend the workpiece;

[0011] The secondary tool mounting base is laterally movable inside the C-shaped tool holder;

[0012] A secondary blade is located at the front end of the secondary blade mounting base. The front end of the secondary blade is slidably engaged with the side of the main blade away from the C-shaped blade holder, and is used to bend the workpiece.

[0013] Furthermore, it also includes a secondary tool drive component, which comprises:

[0014] The belt drive assembly has two pulleys respectively installed at both ends of the C-shaped tool holder laterally;

[0015] A drive motor is used to drive the belt drive assembly.

[0016] The auxiliary blade mounting base is installed on the front straight section of the belt of the belt drive assembly.

[0017] Furthermore, the secondary blade drive unit and the secondary blade mounting base and the secondary blade connected thereto are arranged in two sets in a rotationally symmetrical manner.

[0018] Furthermore, the main blade includes an upper main blade and a lower main blade arranged symmetrically, and are respectively located at the front end of the upper arm and the front end of the lower arm of the C-shaped blade holder;

[0019] The secondary blade includes an upper secondary blade and a lower secondary blade arranged symmetrically at the top and bottom; the top front end of the upper secondary blade is slidably engaged with the lower end of the upper main blade; the bottom front end of the lower secondary blade is slidably engaged with the upper end of the lower main blade.

[0020] Furthermore, the C-shaped base is slidably connected to a mounting base on its inner side, and is provided with a first driving device for driving the mounting base to move back and forth;

[0021] The C-shaped tool holder is slidably connected to the front end of the mounting base, and the mounting base is also provided with a second driving device for driving the C-shaped tool holder to slide up and down.

[0022] Furthermore, a top blade spans across the top of the front end of the lower arm of the C-shaped machine base to support the bottom surface of the workpiece.

[0023] Furthermore, the front end of the upper arm of the C-shaped machine base is provided with a knife-pressing assembly; the knife-pressing assembly includes:

[0024] The lifting cutter holder is vertically and slidably connected to the front end face of the upper arm of the C-shaped machine base;

[0025] The third drive device is located on the upper arm of the C-shaped base and is used to drive the lifting tool holder to rise and fall.

[0026] A dovetail slide rail spans the lower end of the lifting knife holder;

[0027] The pressure cutter, held in place at the dovetail portion of the bottom of the dovetail slide rail, is used to press down and cooperate with the top cutter to clamp the workpiece.

[0028] Furthermore, the top surface of the dovetail slide rail is provided with an assembly groove for the bottom of the lifting knife seat to be inserted. The front side of the assembly groove is inclined and a wedge block is slidably fitted therein. The wedge block is pulled in and fixed by a vertical bolt.

[0029] The dovetail slide rail is connected to the lifting knife holder by a bolt that runs vertically through it.

[0030] Furthermore, the top surface of the pressure knife is provided with a horizontally penetrating mounting groove. A floating block that can move longitudinally is connected to the middle of the front side wall of the mounting groove by bolts. The floating block cooperates with the rear side wall of the mounting groove to clamp the dovetail part of the dovetail slide rail.

[0031] Furthermore, the pressing knife is composed of multiple single blades sequentially spliced ​​together in the transverse direction.

[0032] Compared with the prior art, the beneficial effects of this utility model are:

[0033] 1. It can bend the entire side of the workpiece with the main cutter and bend the local area of ​​the workpiece with the auxiliary cutter that can move laterally. This coordinated action of the main and auxiliary cutters allows some complex bending processes that originally required multiple machines or multiple processes to be completed in one clamping and continuous operation on this device, which significantly improves processing efficiency.

[0034] 2. Because the front end of the auxiliary cutter is slidably engaged with the corresponding main cutter, the front end of the auxiliary cutter can always receive direct support from the main cutter during bending operations. This not only enhances the rigidity and deformation resistance of the auxiliary cutter during operation, but also effectively prevents the auxiliary cutter from bending or vibrating due to the reaction force of the workpiece, ensuring the stability of the bending process. At the same time, the auxiliary cutter can also move under the guidance and support of the main cutter, with a more precise trajectory, thereby ensuring the accuracy of the bending angle and shape of the workpiece.

[0035] 3. The auxiliary cutter is driven by a belt drive assembly, which can achieve precise lateral reciprocating motion. Combined with the forward and backward and up and down motion of the main cutter, it can achieve a variety of different bending angles and bending shapes, greatly expanding the processing range and application flexibility of bending tools. At the same time, the auxiliary cutter drive components such as the belt drive assembly are integrated into the C-shaped cutter holder and its rotationally symmetrical arrangement achieves the balance of driving force and the compactness of the structure. This allows the entire device to achieve complex functions while avoiding an overly large structure and saving equipment space.

[0036] 4. The pressing knife assembly adopts a fastening method of dovetail slide rail and wedge block, and a connection structure between the pressing knife and the dovetail slide rail is clamped by floating block. This not only ensures reliable connection, but also facilitates quick adjustment of the lateral position of the pressing knife or disassembly and replacement. In addition, the pressing knife adopts a modular splicing design, which can quickly adapt to plates of different widths, improving the versatility and maintenance efficiency of the equipment. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the structure of this utility model;

[0038] Figure 2 This is a schematic diagram of the assembly structure of the C-shaped tool holder and the mounting base in this utility model;

[0039] Figure 3 This is a schematic diagram of the C-shaped tool holder in this utility model;

[0040] Figure 4 for Figure 3 Enlarged view of part I in the image;

[0041] Figure 5 This is a schematic diagram of the pressure knife assembly in this utility model;

[0042] Figure 6 This is a cross-sectional view of the pressure knife assembly in this utility model.

[0043] In the diagram: 1. C-type base; 2. C-type tool holder; 3. Main tool; 31. Upper main tool; 32. Lower main tool; 4. Secondary tool; 41. Upper secondary tool; 42. Lower secondary tool; 5. Secondary tool drive unit; 51. Belt drive assembly; 52. Drive motor; 6. Mounting base; 7. Secondary drive device; 8. Top tool; 9. Pressing tool assembly; 91. Lifting tool holder; 92. Third drive device; 93. Dovetail slide rail; 94. Pressing tool; 941. Floating block; 95. Wedge block; 10. Secondary tool mounting base. Detailed Implementation

[0044] The present invention will be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention. In the description of the present invention, it should be understood that if terms such as "upper", "lower", "front", "rear", "left", "right" indicate orientation or positional relationship, they are only corresponding to the drawings of this application for the convenience of describing the present invention. It should be understood that if terms such as "end", "side", "end portion", "side part", "lateral", "longitudinal", etc. indicate orientation or positional relationship, they are only corresponding to the length and width of the corresponding component. That is, "end" indicates the head and tail area in the length direction of the corresponding component, and "side part" indicates the head and tail area in the width direction of the corresponding component. They are used for the convenience of describing the present invention and do not indicate or imply that the device or element referred to must have a specific orientation.

[0045] Example 1, in conjunction with Appendix Figure 1-6 A bending cutter for a sheet metal bending machine, mainly composed of a frame, a main bending section, a secondary bending section, and a clamping section.

[0046] The frame includes a C-shaped base 1, and a mounting seat 6 is slidably connected to the inner side of the C-shaped base 1 via a guide rail slider mechanism. The mounting seat 6 is driven by a first drive device (not shown in the figure) and can move back and forth relative to the C-shaped base 1.

[0047] The main bending section includes a C-shaped cutter holder 2 and a main cutter 3. The C-shaped cutter holder 2 is slidably connected to the front end of the mounting base 6 via a guide rail slider mechanism. A second drive device 7 is mounted on the mounting base 6 to drive the C-shaped cutter holder 2 to slide up and down. The main cutter 3 spans and is fixed to the front end of the C-shaped cutter holder 2.

[0048] In use, the first drive device can drive the mounting base 6 to move back and forth, thereby adjusting the position of the C-shaped tool holder 2. This allows the main tool 3 or the auxiliary tool 4 to move to the working area. Then, the second drive device 7 drives the C-shaped tool holder 2 to move up and down, causing the main tool 3 or the auxiliary tool 4 to move up or down, thus completing the bending operation of the entire workpiece.

[0049] The secondary bending section includes a secondary blade drive unit 5, a secondary blade mounting base 10, and a secondary blade 4. The secondary blade drive unit 5 includes a belt drive assembly 51 and a drive motor 52. The two pulleys in the belt drive assembly 51 are respectively mounted on the lateral ends of the C-shaped blade holder 2 via bearing seats. The drive motor 52 is fixed to one end of the C-shaped blade holder 2 and is used to drive the belt drive assembly 51 to operate.

[0050] The auxiliary blade mounting base 10 is fixed to the front straight section of the belt in the belt drive assembly 51 by a connector, so that it can be driven by the belt to perform lateral reciprocating motion.

[0051] Combined with appendix Figure 4 The secondary blade 4 is fixed to the front end of the secondary blade mounting base 10. The front end of the secondary blade 4 is slidably engaged with the side of the main blade 3 away from the C-shaped blade holder 2 via a sliding groove and slide rail structure. That is, the front end of the secondary blade 4 and the side of the main blade 3 away from the C-shaped blade holder 2 form a sliding groove and slide rail structure. Specifically, the front end of the secondary blade 4 has a first sliding groove structure, the outer wall of which is bent inward to form a first slide rail structure. At the same time, the side of the main blade 3 away from the C-shaped blade holder 2 has a second slide rail structure that slides and engages with the first sliding groove structure, and a second sliding groove structure that slides and engages with the first slide rail structure, so that the first sliding groove structure and the first slide rail structure, as well as the second sliding groove structure and the second slide rail structure, slide and engage simultaneously to form an engaging structure.

[0052] This configuration allows the main blade 3 to support the front end of the secondary blade 4 during operation, increasing the rigidity of the secondary blade 4.

[0053] Specifically, when the main blade 3 and the auxiliary blade 4 move upward to complete the upward bending operation of the workpiece, the bottom front end of the auxiliary blade 4 slides and engages with the upper end of the main blade 3; similarly, when the main blade 3 and the auxiliary blade 4 move downward to complete the downward bending operation of the workpiece, the top front end of the auxiliary blade 4 slides and engages with the lower end of the main blade 3.

[0054] In use, the drive motor 52 can drive the belt drive group 51 to run, and the belt drives the auxiliary blade mounting base 10 to move laterally, thereby driving the auxiliary blade 4 to move laterally to the working area or idle area.

[0055] As needed, two sets of secondary tool drive units 5 are provided, arranged rotationally symmetrically on the C-shaped tool holder 2. Specifically, one set of secondary tool drive units 5 is spaced above the other set of secondary tool drive units 5.

[0056] Preferably, the passive pulley in one set of secondary blade drive components 5 and the active pulley in another set of secondary blade drive components 5 are coaxially mounted in the same housing.

[0057] In a preferred embodiment of this invention, in conjunction with the appendix Figure 2-4 To enhance practicality and enable both downward and upward bending of workpieces, the main cutter 3 consists of an upper main cutter 31 and a lower main cutter 32 symmetrically arranged vertically, fixed to the front ends of the upper and lower arms of the C-shaped tool holder 2, respectively. Simultaneously, the auxiliary cutter 4 also includes an upper auxiliary cutter 41 and a lower auxiliary cutter 42 symmetrically arranged vertically.

[0058] Specifically, the top front end of the upper auxiliary blade 41 is slidably engaged with the lower end of the upper main blade 31; the bottom front end of the lower auxiliary blade 42 is slidably engaged with the upper end of the lower main blade 32.

[0059] Preferably, the upper main blade 31 and the lower main blade 32 adopt different shapes of working structures, that is, the upper main blade 31 and the lower main blade 32 can complete two shapes of bending operations.

[0060] Preferably, the upper auxiliary blade 41 and the lower auxiliary blade 42 also adopt different shapes of working structures, that is, the upper auxiliary blade 41 and the lower auxiliary blade 42 can complete two shapes of bending operations.

[0061] When downward bending is required, the C-shaped tool holder 2 is driven to move downward by the second drive device 7, which causes the upper main tool 31 and the upper auxiliary tool 41 to press the workpiece downward, thus achieving downward bending; when upward bending is required, the C-shaped tool holder 2 is driven to move upward by the second drive device 7, which causes the lower main tool 32 and the lower auxiliary tool 42 to lift the workpiece upward, thus achieving upward bending.

[0062] Combined with appendix Figure 1 and 5 -6, The clamping part includes the top knife 8 and the clamping knife assembly 9.

[0063] The top cutter 8 spans across and is fixed to the top front end of the lower arm of the C-type base 1, and is used to support the bottom surface of the workpiece during bending.

[0064] The pressing knife assembly 9 is located at the front end of the upper arm of the C-shaped base 1, and mainly includes a lifting knife holder 91, a third drive device 92, a dovetail slide rail 93, and a pressing knife 94.

[0065] The lifting tool holder 91 is vertically slidably connected to the front end face of the upper arm of the C-shaped base 1 via a guide rail slider mechanism. The third drive device 92 is fixed to the upper arm of the C-shaped base 1, and its output end is connected to the lifting tool holder 91 to drive the lifting tool holder 91 to rise and fall.

[0066] In use, the third drive device 92 can drive the lifting tool holder 91 to move downward, which in turn drives the pressure tool 94 to press down, and together with the top tool 8, clamps the workpiece.

[0067] In a preferred embodiment of this invention, in conjunction with the appendix Figure 5-6 The dovetail slide rail 93 spans the lower end of the lifting tool holder 91. Specifically, the top surface of the dovetail slide rail 93 has an assembly groove, the front side of which is inclined. The bottom of the lifting tool holder 91 is inserted into this assembly groove, and is pre-positioned longitudinally by a wedge block 95 that slides on this inclined surface. By tightening the vertical bolt, the wedge block 95 can be tightened, eliminating the assembly gap. That is, the bolt can be rotated to move the wedge block 95 downward, allowing the dovetail slide rail 93 to move forward, thereby making the rear side of the assembly groove fit tightly against the rear side of the lifting tool holder 91, thus achieving the function of longitudinal positioning of the dovetail slide rail 93.

[0068] Meanwhile, the dovetail slide rail 93 is also finally fastened to the lifting tool holder 91 by a bolt that runs vertically through it. This bolt can be rotated to make the dovetail slide rail 93 move upward, so that the bottom surface of the mounting slot is in close contact with the bottom surface of the lifting tool holder 91, thereby realizing the function of vertical positioning of the dovetail slide rail 93.

[0069] It should be noted that: the hole on the wedge block 95 through which the corresponding bolt passes is larger than the diameter of the bolt's threaded portion. That is, when the bolt is rotated, as the wedge block 95 moves downward, it can move backward relative to the bolt, engaging with the rear side of the assembly groove to longitudinally clamp the lower end of the lifting tool holder 91. At the same time, the hole on the dovetail slide rail 93 through which the corresponding bolt passes is larger than the diameter of the bolt's threaded portion. That is, as the wedge block 95 engages with the rear side of the assembly groove to longitudinally clamp the lower end of the lifting tool holder 91, it can push the dovetail slide rail 93 forward. This effectively avoids over-positioning (i.e., positioning conflict caused by multiple constraints).

[0070] The pressure cutter 94 is clamped at the dovetail portion of the bottom of the dovetail slide rail 93 via a horizontally penetrating mounting groove on its top surface. Specifically, a longitudinally movable floating block 941 is bolted to the middle of the front sidewall of the mounting groove. This allows the pressure cutter 94 to move laterally along the dovetail portion of the bottom of the dovetail slide rail 93 when the bolt is not tightened, and also allows the floating block 941 to cooperate with the rear sidewall of the mounting groove to longitudinally clamp the dovetail portion of the dovetail slide rail 93 when the bolt is tightened, thus fixing the position of the pressure cutter 94.

[0071] Preferably, in order to accommodate plates of different widths, the pressure knife 94 can be composed of multiple standard-length single blades spliced ​​together in the transverse direction.

[0072] It should be noted that the horizontal direction mentioned above refers to the left-right direction, and the vertical direction refers to the front-back direction.

[0073] Preferably, all of the above-mentioned drive devices adopt existing technologies, such as lead screw motor sets, etc.

[0074] The parts of this utility model not described in detail are prior art. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that this utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the above embodiments should be regarded as exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended to include all changes that fall within the meaning and scope of the equivalents of the claims in this utility model, and no reference numerals in the claims should be regarded as limiting the content of the claims.

Claims

1. A bending cutter for a sheet metal bending machine, characterized in that, include: C-type base (1); The C-shaped tool holder (2) is movably disposed on the inner side of the C-shaped machine base (1) in both longitudinal and vertical directions, and the opening direction of the C-shaped tool holder (2) is consistent with the opening direction of the C-shaped machine base (1); The main blade (3) spans across the front end of the C-shaped tool holder (2) and is used to bend the workpiece; The secondary tool mounting base (10) is laterally movable inside the C-shaped tool holder (2); The secondary blade (4) is located at the front end of the secondary blade mounting base (10). The front end of the secondary blade (4) is slidably engaged with the side of the main blade (3) away from the C-shaped blade holder (2) and is used to bend the workpiece.

2. The bending cutter for a sheet metal bending machine according to claim 1, characterized in that: It also includes a secondary blade drive unit (5), which includes: The belt drive assembly (51) has two pulleys installed at the two transverse ends of the C-shaped cutter holder (2); A drive motor (52) is used to drive the belt drive assembly (51) to run; The auxiliary blade mounting base (10) is installed on the front straight section of the belt of the belt drive assembly (51).

3. A bending cutter for a sheet metal bending machine according to claim 2, characterized in that: The secondary blade drive unit (5), the secondary blade mounting base (10) connected thereto, and the secondary blade (4) are arranged in two sets in a rotationally symmetrical manner.

4. A bending cutter for a sheet metal bending machine according to claim 1, characterized in that: The main blade (3) includes an upper main blade (31) and a lower main blade (32) arranged symmetrically on the upper and lower sides, respectively located at the front end of the upper arm and the front end of the lower arm of the C-shaped blade holder (2); The secondary blade (4) includes an upper secondary blade (41) and a lower secondary blade (42) arranged symmetrically above and below; the top front end of the upper secondary blade (41) is slidably fastened to the lower end of the upper main blade (31); the bottom front end of the lower secondary blade (42) is slidably fastened to the upper end of the lower main blade (32).

5. A bending cutter for a sheet metal bending machine according to claim 1, characterized in that: The C-type base (1) is slidably connected to a mounting base (6) on its inner side, and is provided with a first driving device for driving the mounting base (6) to move back and forth. The C-shaped tool holder (2) is slidably connected to the front end of the mounting base (6), and the mounting base (6) is also provided with a second driving device (7) for driving the C-shaped tool holder (2) to slide up and down.

6. A bending cutter for a sheet metal bending machine according to claim 1, characterized in that: The top of the lower arm of the C-type base (1) is supported by a top knife (8) for supporting the bottom surface of the workpiece.

7. A bending cutter for a sheet metal bending machine according to claim 6, characterized in that: The upper arm of the C-type base (1) is provided with a knife pressing assembly (9); the knife pressing assembly (9) includes: The lifting knife holder (91) is vertically and slidably connected to the front end face of the upper arm of the C-type machine base (1); The third drive device (92) is located on the upper arm of the C-shaped base (1) and is used to drive the lifting knife holder (91) to rise and fall. The dovetail slide rail (93) spans the lower end of the lifting knife holder (91); The pressure cutter (94) is clamped at the dovetail portion at the bottom of the dovetail slide rail (93) and is used to press down and cooperate with the top cutter (8) to clamp the workpiece.

8. A bending cutter for a sheet metal bending machine according to claim 7, characterized in that: The top surface of the dovetail slide rail (93) is provided with an assembly groove for the bottom of the lifting knife seat (91) to be inserted. The front side of the assembly groove is a slope and a wedge block (95) is slidably fitted thereon. The wedge block (95) is pulled in and fixed by a vertical bolt. The dovetail slide rail (93) is connected to the lifting knife seat (91) by bolts that pass vertically through it.

9. A bending cutter for a sheet metal bending machine according to claim 7, characterized in that: The top surface of the pressure knife (94) is provided with a horizontal through mounting groove. A floating block (941) that can move longitudinally is connected to the middle of the front side wall of the mounting groove by bolts. The floating block (941) cooperates with the rear side wall of the mounting groove to clamp the dovetail part of the dovetail slide rail (93).

10. A bending cutter for a sheet metal bending machine according to claim 7 or 9, characterized in that: The pressing knife (94) is composed of multiple single blades spliced ​​together in the transverse direction.

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