Automatic cutter selecting mechanism for bending and pressing cutters

Abstract

The utility model relates to the technical field of bending equipment, in particular to an automatic cutter selecting mechanism for bending and pressing cutters, which comprises a fixed plate, a mounting plate, a sliding plate, a moving device and a cutter separating device, one side of the mounting plate is slidably arranged on the fixed plate, one side of the sliding plate is slidably arranged on the mounting plate, and the moving device is arranged on the sliding plate. Two fixing supports are further arranged on the mounting plate, a spline shaft part is rotationally arranged between the two fixing supports, the cutter separating device comprises a connecting plate, a rotating motor and a cutter blocking shaft part are arranged outside the connecting plate, a bending cutter set is arranged at the other end of the spline shaft part in a sleeving mode, and the tail end of the cutter blocking shaft part corresponds to the bending cutter set. The moving device is used for controlling the moving distance of the sliding plate, the number of the bending blades can be automatically selected, the edge folding length needed by product bending can be matched by selecting the number of the blades, the metal plate bending machine is suitable for bending metal plate workpieces of different length sizes, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bending equipment, in particular to an automatic tool selection mechanism for bending pressing knives. Background Technique

[0002] A bending center is a machine capable of bending thin plates. During operation, it can perform automated multi-sided bending processing on thin plate workpieces. The bending center has the characteristics of high efficiency, can achieve automatic positioning, ensuring high precision, and can save labor costs. The overall structure of the bending center includes a numerical control system, a servo front and rear movement mechanism, a servo upward movement mechanism, a lower die fixing mechanism, and an upper pressing die machine. Among them, the upper pressing die mechanism customizes corresponding upper pressing dies according to different bending requirements.

[0003] At present, the number of bending pressing knives of the upper pressing die of the traditional automatic bending center is fixed, and it is impossible to perform edge folding processing on sheet metal workpieces with arbitrary edge lengths. When it is necessary to perform bending processing on sheet metal workpieces with different lengths, it is necessary to manually replace the upper pressing die that matches the edge length of the product, which is time-consuming and laborious, affects efficiency, and at the same time, it is necessary to customize a variety of upper pressing dies, resulting in higher costs.

[0004] Referring to the patent publication number "CN217142014U", the patent name is "Quick tool change device for a bending machine". This technical solution discloses "a quick tool change device for a bending machine, including a tool change rack, a pressing block, and an expansion belt. By providing a receiving space, an embedding groove, an activity groove, and a hanging platform on the tool change rack, and cooperating with the pressing block that can move up and down in the activity groove, and the expansion belt that can expand and contract in the activity groove and urges the pressing block to move downward, when changing tools, the support bar of the tool can be inserted into the embedding groove, and at the same time, the hanging platform can be inserted into the hanging groove, and then the expansion belt expands, so that the pressing block presses downward and fixes the tool, and the installation and fixation of the tool can be completed. When removing the tool, only the expansion belt needs to contract, and then the tool can be directly taken out. The replacement process is simpler, which not only reduces the labor intensity and labor cost, but also effectively improves the replacement speed, thereby improving the overall processing efficiency of the product. In addition, the problem of the tool being misaligned front and back can be prevented through the cooperation of the positioning groove and the positioning part", although this technical solution can achieve the improvement of the tool change speed, this technical solution cannot effectively realize the automatic selection of the number of blades to match the length of the edge to be folded of the product.

[0005] Therefore, how to realize the automatic selection of the number of blades is the main technical problem that technical personnel need to solve at present. Content of the Utility Model

[0006] The purpose of the utility model is to provide an automatic tool selection mechanism for bending pressing knives to solve the problems raised in the above background technique.

[0007] To achieve the above object, the present utility model provides the following technical solutions: A bending and pressing tool automatic tool selection mechanism, comprising:

[0008] A fixed plate member, a mounting plate member, a sliding plate member, a moving device and a tool separating device;

[0009] One side of the mounting plate member is slidably arranged on the fixed plate member, the sliding plate member and the moving device are both arranged on the other side of the mounting plate member. The moving device includes a moving motor and a transmission lead screw. The power output end of the moving motor is in transmission connection with the transmission lead screw, and a moving slider is sleeved outside the transmission lead screw. The moving slider is fixed on the sliding plate member;

[0010] One side of the sliding plate member is slidably arranged on the mounting plate member. Two fixed supports are further arranged on the mounting plate member. A spline shaft member is rotatably arranged between the two fixed supports. The tool separating device includes a connecting plate member. The connecting plate member is fixedly arranged on the other side of the sliding plate member. A rotating motor and a knife blocking shaft member are respectively arranged outside the connecting plate member. The power output end of the rotating motor is connected to one end of the spline shaft member. The other end of the spline shaft member is sleeved with a bending knife group. The end of the knife blocking shaft member corresponds to the bending knife group. The moving device is used to control the moving distance of the sliding plate member, and the rotating motor is used to control the rotating direction of the spline shaft member.

[0011] Preferably, rotating bearings are arranged inside both of the two fixed supports. One of the two fixed supports is close to the rotating motor, and the other fixed support is arranged near the spline teeth of the spline shaft member. A spline sleeve is arranged inside the other fixed support, and the inner wall of the spline sleeve is adapted to the spline teeth of the spline shaft member.

[0012] Preferably, a coupling is sleeved on the power output end of the rotating motor, and one end of the spline shaft member passes through the inside of the coupling.

[0013] Preferably, a pushing device is arranged outside the fixed plate member. The pushing device is arranged near the outside of the mounting plate member, and the power output end of the pushing device is connected to the outside of the mounting plate member. The pushing device is used to control the sliding distance of the mounting plate member.

[0014] Preferably, the bending knife group is composed of a plurality of bending blades stacked in sequence. Installation bayonets are opened at the ends of the plurality of bending blades. A limiting card slot is arranged on the inner wall of the installation bayonet, and the limiting card slot is adapted to the spline teeth of the spline shaft member.

[0015] Preferably, a first guide rail is arranged on the side of the fixed plate member facing the mounting plate member, and a first slider is arranged on the side of the mounting plate member facing the fixed plate member. The first slider is slidably connected to the first guide rail.

[0016] Preferably, a second guide rail is provided on the side of the mounting plate facing the sliding plate, a second slider is provided on the side of the sliding plate facing the mounting plate, and the second slider is slidably connected to the second guide rail.

[0017] Preferably, a limiting bushing is sleeved on the other end of the spline shaft, and the limiting bushing is close to the folding cutter group.

[0018] Preferably, a guide plate is provided outside one of the fixed supports, a guide through hole is provided inside the guide plate, a guide copper sleeve is provided inside the guide through hole, and the central axis of the guide copper sleeve and the central axis of the cutter blocking shaft are located on the same central axis.

[0019] Compared with the prior art, the present technical solution provides a bending and pressing tool automatic tool selection mechanism: by providing a fixing plate, a mounting plate, a sliding plate, a moving device and a tool separating device, one side of the mounting plate is slidably arranged on the fixing plate, the moving device of the sliding plate is arranged on the other side of the mounting plate, one side of the sliding plate is slidably arranged on the mounting plate, the moving device includes a moving motor and a transmission lead screw, and the power output end of the moving motor is in transmission connection with the transmission lead screw, so that the moving distance of the sliding plate is controlled by the moving motor. A moving slider can be sleeved outside the transmission lead screw. Therefore, the moving device can be used for the moving distance of the sliding plate. Two fixed supports are also provided on the mounting plate, and a spline shaft is rotatably arranged between the two fixed supports. The tool separating device includes a connecting plate, and the connecting plate is fixedly arranged on the other side of the sliding plate. By driving the sliding plate through the moving device, the connecting plate can be driven by the sliding plate to realize the movement of the tool separating device. By respectively providing a rotating motor and a cutter blocking shaft outside the connecting plate, the power output end of the rotating motor is connected to one end of the spline shaft, so that the spline shaft can rotate. A folding cutter group is sleeved on the other end of the spline shaft, and the end of the cutter blocking shaft corresponds to the folding cutter group. When the moving device drives the tool separating device to approach the folding cutter group, the cutter blocking shaft is located under some bending blades. By driving the spline shaft to rotate through the rotating motor, at this time, the folding cutter group rotates, and some bending blades are blocked by the cutter blocking shaft, thereby realizing the effect of the cutter blocking shaft selecting the number of tools, automatically selecting the number of bending blades, automatically selecting the bending blades to match the folding edge length required for the product bending, being applicable to the bending processing of sheet metal workpieces with length dimensions, and improving the work efficiency. Description of the Drawings

[0020] To more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 It is a schematic diagram of the overall structure in the present utility model.

[0022] Figure 2 It is a schematic diagram of the knife splitting device and the spline shaft part structure in the present utility model.

[0023] Figure 3 It is a schematic diagram of the knife splitting device and the folding and bending knife group structure in the present utility model.

[0024] Figure 4 It is a partial enlarged schematic diagram at position A in the present utility model.

[0025] Figure 5 It is a schematic diagram of the internal structure of the guide plate part and the fixed support in the present utility model.

[0026] Figure 6 It is a schematic diagram of the side structure of the bending blade in the present utility model.

[0027] As shown in the markings in the figure: 1. Fixed plate part; 2. Mounting plate part; 3. Sliding plate part; 4. Moving device; 5. Knife splitting device; 6. Spline shaft part; 7. Pushing device; 8. Guide plate part; 11. First guide rail; 21. Fixed support; 22. Second guide rail; 23. First slider; 31. Second slider; 41. Moving motor; 42. Transmission lead screw; 43. Moving slider; 51. Connecting plate part; 52. Rotating motor; 53. Knife blocking shaft part; 61. Folding and bending knife group; 62. Limit bushing; 81. Guide through hole; 82. Guide copper sleeve; 211. Rotating bearing; 212. Spline sleeve; 521. Coupling; 611. Bending blade; 612. Mounting bayonet; 613. Limit card slot. Detailed implementation manners

[0028] In order to make the objectives, technical solutions and advantages of the present utility model more clearly understood, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part rather than all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model. The preferred embodiments of the present utility model will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present utility model are shown in the drawings, it should be understood that the present utility model can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to make the present utility model more thorough and complete, and to fully convey the scope of the present utility model to those skilled in the art.

[0029] The terms used in the present utility model are for the purpose of describing specific embodiments only and are not intended to limit the present utility model. The singular forms "a", "said" and "the" used in the present utility model and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0030] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0031] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "thickness", "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0032] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" 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 an indirect connection through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0033] It should be understood that although the terms "first", "second", "third", etc. may be used in the present utility model to describe various components, this information should not be limited to these terms. These terms are only used to distinguish components of the same type from each other. For example, without departing from the scope of the present utility model, the first component may also be referred to as the second component, and similarly, the second component may also be referred to as the first component. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, the meaning of "a plurality" is two or more unless otherwise clearly and specifically defined.

[0034] The technical solutions of the embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

[0035] Reference Figures 1 to 6 , a bending and pressing tool automatic tool selection mechanism, comprising:

[0036] A fixed plate member 1, a mounting plate member 2, a sliding plate member 3, a moving device 4, and a tool separating device 5; one side of the mounting plate member 2 is slidably disposed on the fixed plate member 1, the sliding plate member 3 and the moving device 4 are both disposed on the other side of the mounting plate member 2, the moving device 4 includes a moving motor 41 and a transmission lead screw 42, the power output end of the moving motor 41 is in transmission connection with the transmission lead screw 42, and a moving slider is sleeved outside the transmission lead screw 42, and the moving slider is fixed on the sliding plate member 3;

[0037] One side of the sliding plate member 3 is slidably arranged on the mounting plate member 2. Two fixed supports 21 are also arranged on the mounting plate member 2. A spline shaft member 6 is rotatably arranged between the two fixed supports 21. The knife splitting device 5 includes a connecting plate member 51. The connecting plate member 51 is fixedly arranged on the other side of the sliding plate member 3. A rotating motor 52 and a knife blocking shaft member 53 are respectively arranged outside the connecting plate member 51. The power output end of the rotating motor 52 is connected to one end of the spline shaft member 6. A folding knife group 61 is sleeved on the other end of the spline shaft member 6. The end of the knife blocking shaft member 53 corresponds to the folding knife group 61. The moving device 4 is used to control the moving distance of the sliding plate member 3. The rotating motor 52 is used to control the rotating direction of the spline shaft member 6.

[0038] Specifically, rotating bearings 211 are arranged inside both of the two fixed supports 21. One of the two fixed supports 21 is close to the rotating motor 52. The other fixed support 21 is arranged near the spline teeth of the spline shaft member 6. And a spline sleeve 212 is arranged inside the other fixed support 21. The inner wall of the spline sleeve 212 is adapted to the spline teeth of the spline shaft member 6.

[0039] Specifically, a coupling 521 is sleeved on the power output end of the rotating motor 52. And one end of the spline shaft member 6 is arranged inside the coupling 521.

[0040] Specifically, a pushing device 7 is arranged outside the fixed plate member 1. The pushing device 7 is arranged near the outside of the mounting plate member 2. And the power output end of the pushing device 7 is connected to the outside of the mounting plate member 2. The pushing device 7 is used to control the sliding distance of the mounting plate member 2.

[0041] Specifically, the folding knife group 61 is composed of a plurality of folding blade 611 stacked in sequence. Installation bayonets 612 are opened at the ends of the plurality of folding blades 611. A limiting card slot 613 is arranged on the inner wall of the installation bayonet 612. The limiting card slot 613 is adapted to the spline teeth of the spline shaft member 6.

[0042] Specifically, a first guide rail 11 is arranged on the side of the fixed plate member 1 facing the mounting plate member 2. A first slider 23 is arranged on the side of the mounting plate member 2 facing the fixed plate member 1. The first slider 23 is slidably connected to the first guide rail 11.

[0043] Specifically, a second guide rail 22 is arranged on the side of the mounting plate member 2 facing the sliding plate member 3. A second slider 31 is arranged on the side of the sliding plate member 3 facing the mounting plate member 2. The second slider 31 is slidably connected to the second guide rail 22.

[0044] Specifically, a limit bushing 62 is sleeved on the other end of the spline shaft member 6, and the limit bushing 62 is close to the folding cutter group 61.

[0045] Specifically, a guide plate member 8 is arranged outside one of the fixed supports 21. A guide through hole 81 is formed inside the guide plate member 8, and a guide copper bushing 82 is arranged inside the guide through hole 81. The central axis of the guide copper bushing 82 and the central axis of the cutter blocking shaft member 53 are both located on the same central axis.

[0046] Embodiment 1

[0047] To achieve the action of automatically selecting the number of blades, in this embodiment: By providing a fixing plate member 1, a mounting plate member 2, a sliding plate member 3, a moving device 4 and a blade dividing device 5, one side of the mounting plate member 2 is slidably arranged on the fixing plate member 1, and the sliding plate member 3 and the moving device 4 are both arranged on the other side of the mounting plate member 2. The moving device 4 includes a moving motor 41 and a transmission lead screw 42. The power output end of the moving motor 41 is in transmission connection with the transmission lead screw 42. A moving slider is sleeved outside the transmission lead screw 42, and the moving slider is fixed on the sliding plate member 3. Therefore, when the moving motor 41 drives the transmission lead screw 42 to rotate, the moving slider outside the transmission lead screw 42 reciprocates on the transmission lead screw 42. The moving slider 43 is fixed on the sliding plate member 3. Therefore, the sliding plate member 3 can be driven by the moving motor 41 to reciprocate. One side of the sliding plate member 3 is slidably arranged on the mounting plate member 2, so that the sliding plate member 3 can reciprocate on the mounting plate member 2. By further providing 2 fixed supports 21 on the mounting plate member 2, a spline shaft member 6 is rotatably arranged between the 2 fixed supports 21. The blade dividing device 5 includes a connecting plate member 51. By fixing the connecting plate member 51 on the other side of the sliding plate member 3, and by respectively arranging a rotating motor 52 and a cutter blocking shaft member 53 outside the connecting plate member 51, therefore, the rotating motor 52 and the cutter blocking shaft member 53 can be fixed on the sliding plate member 3 through the connecting plate member 51. The power output end of the rotating motor 52 is connected to one end of the spline shaft member 6, and a folding cutter group 61 is sleeved on the other end of the spline shaft member 6. The end of the cutter blocking shaft member 53 corresponds to the folding cutter group 61. When the sliding plate member 3 moves towards the folding cutter group 61, the cutter blocking shaft member 53 approaches the folding cutter group 61. During this process, the cutter blocking shaft member 53 slowly moves under the folding cutter group 61 to block part of the bending blades 611. At this time, the rotating motor 52 drives the spline shaft member 6 to rotate, so that the part on the spline shaft member 6 is blocked by the cutter blocking shaft member 53. Therefore, the automatic tool selection action is realized, and the number of blades is selected to match the folding length required for product bending, which is suitable for bending processing of sheet metal workpieces with different length dimensions and improves work efficiency.

[0048] It should be noted that, in order to automatically control the position blocked by the knife blocking shaft member 53, the sliding distance of the sliding plate member 3 on the mounting plate member 2 can be controlled by the moving device 4. Since the connecting plate member 51 is fixed on the other side of the sliding plate member 3, when the moving device 4 drives the sliding plate member 3 to move, the sliding plate member 3 moves towards the folding knife group 61. Since the knife blocking shaft member 53 is provided on the connecting plate member 51, the moving distance of the knife blocking shaft member 53 is the same as the moving distance of the sliding plate member 3. When it is necessary to move the knife blocking shaft member 53 to a part of the folding knife 611 of the folding knife group 61, the moving range of the knife blocking shaft member 53 can be driven by controlling the operation of the moving device 4.

[0049] It should also be noted that, in order to facilitate the two fixed supports 21 to support the spline shaft member 6 and facilitate the rotation of the spline shaft member 6 inside the two fixed supports 21, in this embodiment: Rotating bearings 211 are provided inside both of the two fixed supports 21. One of the fixed supports 21 is close to the rotating motor 52, and the other fixed support 21 is provided near the spline teeth of the spline shaft member 6. A spline sleeve 212 is provided inside the other fixed support 21, and the inner wall of the spline sleeve 212 is adapted to the spline teeth of the spline shaft member 6. Therefore, the spline teeth of the spline shaft member 6 can be fixed conveniently through the spline sleeve 212.

[0050] For the above description, a further supplement is made that, in the above embodiment, the folding knife group 61 is composed of a plurality of folding knives 611 stacked in sequence. Mounting bays 612 are provided at the ends of the plurality of folding knives 611, and limiting card slots 613 are provided on the inner walls of the mounting bays 612, and the limiting card slots 613 are adapted to the spline teeth of the spline shaft member 6. Therefore, a plurality of folding knives 611 can be effectively arranged on the spline teeth of the spline shaft member 6. The plurality of folding knives can be driven to rotate by the spline shaft member 6, and it is convenient for the plurality of folding knives 611 to axially slide on the spline teeth of the spline shaft member 6, and it can be ensured that the plurality of folding knives can rotate synchronously with the spline shaft member 6.

[0051] It should be noted that, in order to prevent the folding knife group 61 from falling off the spline shaft member 6, a limiting bushing 62 can be sleeved on the other end of the spline shaft member 6, and the limiting bushing 62 is provided near the folding knife group 61. Therefore, the limiting bushing 62 can play a limiting role on the folding knife group 61 to prevent the folding knife group 61 from falling off when the spline shaft member 6 drives the folding knife group 61 to rotate.

[0052] Embodiment Two

[0053] After selecting the number of bending blades 611 corresponding to the bending length of the product, move the selected bending blades 611 to align with the folded edge position of the product, so as to ensure that the folded edge position of the product can be aligned with the selected bending tool group 61 for subsequent bending operations: By providing a pushing device 7 outside the fixed plate member 1, the pushing device 7 is arranged outside the mounting plate member 2 and the power output end of the pushing device 7 is connected to the outside of the mounting plate member 2. Therefore, the pushing device 7 can be used to control the sliding distance of the mounting plate member 2, and the pushing device 7 can drive the mounting plate member 2 to slide on the fixed plate member 1. Since the sliding plate member 3, the moving device 4 and two fixed supports 21 are all arranged on the mounting plate member 2, when the mounting plate member 2 slides on the fixed plate member 1, it can drive the sliding plate member 3, the moving device 4 and two fixed supports 21 to move simultaneously, effectively ensuring that the folded edge position of the product can be aligned with the selected bending tool group 61.

[0054] It should be noted that, in order to enable the mounting plate member 2 to slide on the fixed plate member 1, a first guide rail 11 is provided on the surface of the fixed plate member 1 facing the mounting plate member 2, and a first slider 23 is provided on the surface of the mounting plate member 2 facing the fixed plate member 1, so that the first slider 23 is slidably connected to the first guide rail 11. Therefore, the mounting plate member 2 can slide on the fixed plate member 1.

[0055] It is also noted that a second guide rail 22 is provided on the surface of the mounting plate member 2 facing the sliding plate member 3, and a second slider 31 is provided on the surface of the sliding plate member 3 facing the mounting plate member 2, so that the second slider 31 is slidably connected to the second guide rail 22. Further, the second slider 31 can slide on the second slide rail, thus realizing that the sliding plate member 3 can slide on the mounting plate member 2. In order to enable the sliding plate member 3 to slide close to the bending tool group 61, one end of the second guide rail 22 can be close to the bending tool group 61.

[0056] The solution of the present invention has been described in detail with reference to the accompanying drawings above. In the above embodiments, the descriptions of each embodiment have their own emphases. For the parts not detailedly described in a certain embodiment, reference can be made to the relevant descriptions of other embodiments. Those skilled in the art should also know that the actions and modules involved in the specification are not necessarily essential to the present invention.

[0057] In addition, it can be understood that the steps in the method embodiments of the present invention can be adjusted, combined and deleted according to actual needs, and the structures in the device embodiments of the present invention can be combined, divided and deleted according to actual needs.

[0058] The embodiments of the present utility model have been described above. The above description is exemplary and not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations are obvious to those of ordinary skill in the art in the technical field without departing from the scope and spirit of the described embodiments. The selection of the terms used herein is intended to best explain the principles of the embodiments, the practical application, or the improvement of the technology in the market, or to enable other ordinary technical personnel in the technical field to understand the embodiments disclosed herein.

Claims

1. A bending press knife automatic tool selection mechanism, characterized in that: include: Fixed plate, mounting plate, sliding plate, moving device and knife dividing device; One side of the mounting plate is slidably mounted on the fixed plate, the sliding plate and the moving device are both mounted on the other side of the mounting plate, the moving device comprises a moving motor and a transmission screw, the power output end of the moving motor is transmission-connected to the transmission screw, and a moving slider is sleeved on the outside of the transmission screw, and the moving slider is fixed on the sliding plate; One side of the sliding plate is slidably arranged on the mounting plate, and two fixed supports are also arranged on the mounting plate, and a spline shaft is rotatably arranged between the two fixed supports. The knife-splitting device includes a connecting plate, and the connecting plate is fixedly arranged on the other side of the sliding plate. A rotating motor and a knife-blocking shaft are respectively arranged on the outside of the connecting plate, and a power output end of the rotating motor is connected to one end of the spline shaft, and a bending knife group is sleeved on the other end of the spline shaft, and the end of the knife-blocking shaft corresponds to the bending knife group. The moving device is used to control the moving distance of the sliding plate, and the rotating motor is used to control the rotation direction of the spline shaft.

2. The automatic tool selection mechanism for bending press tool according to claim 1 is characterized in that: Rotating bearings are arranged inside the two fixed supports, one of which is close to the rotating motor, and the other is arranged close to the spline teeth of the spline shaft, and a spline sleeve is arranged inside the other fixed support, and the inner wall of the spline sleeve is adapted to the spline teeth of the spline shaft.

3. The automatic tool selection mechanism for bending press tool according to claim 1 is characterized in that: A coupling is sleeved on the power output end of the rotating motor, and one end of the spline shaft is passed through the interior of the coupling.

4. The automatic tool selection mechanism for bending press tool according to claim 1 is characterized in that: A pushing device is arranged on the outside of the fixed plate, the pushing device is arranged near the outside of the mounting plate, and the power output end of the pushing device is connected to the outside of the mounting plate, and the pushing device is used to control the sliding distance of the mounting plate.

5. The automatic tool selection mechanism for bending press tool according to claim 1 is characterized in that: The bending knife group includes a plurality of bending blades stacked in sequence, and the ends of the plurality of bending blades are provided with mounting sockets, and the inner wall of the mounting socket is provided with a limiting slot, and the limiting slot is adapted to the spline teeth of the spline shaft.

6. The automatic tool selection mechanism for bending press tool according to claim 1 is characterized in that: A first guide rail is arranged on a side of the fixed plate facing the mounting plate, and a first slider is arranged on a side of the mounting plate facing the fixed plate. The first slider is slidably connected to the first guide rail.

7. The automatic tool selection mechanism for bending press tool according to claim 1, characterized in that: A second guide rail is arranged on one side of the mounting plate facing the sliding plate, and a second slider is arranged on one side of the sliding plate facing the mounting plate. The second slider is slidably connected to the second guide rail.

8. The automatic tool selection mechanism for bending press tool according to claim 1, characterized in that: The other end of the spline shaft is sleeved with a limiting sleeve, and the limiting sleeve is close to the bending knife assembly.

9. The automatic tool selection mechanism for bending press tool according to claim 2, characterized in that: One of the fixed supports is provided with a guide plate on the outside, a guide through hole is opened inside the guide plate, a guide copper sleeve is provided inside the guide through hole, and the central axis of the guide copper sleeve and the central axis of the knife blocking shaft are located on the same central axis.

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