Sheet punching and shearing device

Abstract

The utility model belongs to the technical field of sheet punching and shearing, and particularly relates to a sheet punching and shearing device which comprises a base, a sliding groove is formed in one side of the base, a sliding plate is installed in the sliding groove in a sliding mode, scale marks are engraved on the top of the sliding plate, a limiting plate is fixedly installed at one end of the sliding plate, and a sliding rod is fixedly installed on one side of the limiting plate. One end of the sliding rod extends into the base; the driving assembly is located in the base and used for driving the sliding plate to move; the U-shaped frame is fixedly installed on the top of the base and located on one side of the sliding plate, a lower pressing plate is installed in the U-shaped frame in a sliding mode, a clamping groove is formed in the bottom of the lower pressing plate, a cutting knife is installed in the clamping groove in an inserted mode, and a hydraulic cylinder is fixedly installed on the top of the U-shaped frame. And the cutting knife can be conveniently replaced by the personnel, and it is guaranteed that no tool needs to be used when the cutting knife is replaced.

Description

Technical Field

[0001] The utility model belongs to the technical field of sheet metal punching and shearing, in particular to a sheet metal punching and shearing device. Background Art

[0002] Sheet metal punching and shearing is a metal processing process that uses a die to punch and shear metal sheets on a press to obtain workpieces or parts of specific shapes and sizes.

[0003] For example, the Chinese patent with publication number CN212633989U discloses a sheet metal punching and shearing device, which belongs to the technical field of fully automatic sheet metal punching and shearing lines, and includes a base, a punching and shearing box is fixedly connected to the top of the base, a punching and shearing machine is installed inside the punching and shearing box, a shearing knife is fixedly connected to the top of the punching and shearing machine, a buffer plate is installed on the top of the punching and shearing box, the buffer plate is located on the inner side wall of the punching and shearing box, a fixing machine is fixedly connected to the bottom end of the buffer plate, the fixing machine is located on the right side of the buffer plate, a vacuum cleaner is inlaid and connected to the left side of the punching and shearing box, a carrier plate is installed at the lower end of the vacuum cleaner, both ends of the carrier plate are fixedly connected to the punching and shearing box, and a positioning detector, a pusher and a control switch are installed on the right side of the punching and shearing box. The utility model provides a sheet metal punching and shearing device, which can punch and shear sheets and process them into finished products for workers to use. It has mechanized operation, saves time and effort, improves work efficiency, can absorb dust, will not cause environmental pollution, and protects the environment.

[0004] The above patent has the following problems:

[0005] This patent has some disadvantages when used, such as: when the device is punching and shearing the sheet, it cannot accurately control the length of the sheet, which results in the length of the sheet punched and sheared by the device being inaccurate. In addition, when the shearing knife of the device is used for a long time, the blade of the shearing knife often loses its sharpness, and the shearing knife of the device is not easy to replace. In view of this, we propose a sheet punching and shearing device. Utility Model Content

[0006] The purpose of the utility model is to provide a plate punching and shearing device to solve the problems raised in the above background technology.

[0007] In view of this, the utility model provides a sheet metal punching and shearing device, comprising:

[0008] A base, one side of the base is provided with a sliding groove, a sliding plate is slidably installed in the sliding groove, a scale line is engraved on the top of the sliding plate, one end of the sliding plate is fixedly installed with a limit plate, one side of the limit plate is fixedly installed with a sliding rod, and one end of the sliding rod extends into the base;

[0009] A driving assembly, the driving assembly is located in the base and is used to drive the sliding plate to move;

[0010] A U-shaped frame, wherein the U-shaped frame is fixedly mounted on the top of the base and located on one side of the sliding plate, a lower pressing plate is slidably mounted in the U-shaped frame, a card slot is provided at the bottom of the lower pressing plate, a cutting knife is inserted and installed in the card slot, a hydraulic cylinder is fixedly mounted on the top of the U-shaped frame, an output end of the hydraulic cylinder passes through the top of the U-shaped frame and is tightly welded to the lower pressing plate, a damping rod is symmetrically fixedly mounted on the bottom of the lower pressing plate and located on one side of the cutting knife, the bottom ends of the two damping rods are fixedly mounted with the same extrusion plate, and a spring 1 is sleeved on the damping rod;

[0011] A fixing assembly is located in the lower pressing plate and is used to fix the cutting knife.

[0012] The camming mechanism that is used for this purpose is as follows: when the camming mechanism is used, the camming tool is moved upwards to move the camming tool behind the camming tool, and the camming tool is moved downwards to move the camming tool behind the camming tool.

[0013] By setting up the fixing component, when the cutting knife becomes dull after long-term use, the fixing component can release the cutting knife, and the personnel can then pull the cutting knife out of the card slot and insert a new cutting knife into the card slot. When the cutting knife is completely inserted into the card slot, the cutting knife is fixed by the fixing component, ensuring that the cutting knife can be easily replaced by the personnel and that no tools are required when replacing the cutting knife.

[0014] In the above technical solution, further, the driving component includes:

[0015] A threaded rod is rotatably mounted in the sliding groove, and one end of the threaded rod penetrates the sliding plate and the inner wall of the sliding groove and extends to the outside.

[0016] In the present technical scheme, personnel can first rotate the threaded rod according to the length of the sheet material to be punched and sheared. Under the action of the thread, the threaded rod rotates to drive the sliding plate to move in the sliding groove, and the sliding plate will drive the limit plate to move, and the limit plate will drive the sliding rod to slide in the base. At the same time, the personnel can observe the scale line with their eyes, so as to accurately control the spacing between the limit plate and the base. Then the personnel can place the sheet material to be punched and sheared on the top of the base, and push the sheet material so that one side of the sheet material is against the limit plate, and then start the hydraulic cylinder. The output shaft of the hydraulic cylinder will drive the lower pressure plate to move downward, and the downward movement of the lower pressure plate will drive the cutting knife and the two damping rods to move downward. The downward movement of the two damping rods will drive the extrusion plate to move downward. Since the bottom of the extrusion plate is lower than the bottom of the cutting knife, the extrusion plate will contact the sheet material before the cutting knife. Then the extrusion plate will passively squeeze the damping rod and the spring to contract, and squeeze the sheet material on the top of the base. The cutting knife continues to move downward to punch and shear the sheet material, ensuring that personnel can accurately control the length of the sheet material punching and shearing, and the operation is simple and convenient for personnel to use.

[0017] In the above technical solution, further, the threaded rod is threadedly connected to the sliding plate, and one end of the threaded rod is rotatably connected to the base.

[0018] In this technical solution, it is ensured that the rotation of the threaded rod can drive the sliding plate to move, and it is ensured that one end of the threaded rod can rotate normally in the base.

[0019] In the above technical solution, further, the fixing assembly includes:

[0020] A limiting groove is provided in the lower pressure plate and is located above the cutting knife. A movable plate is slidably installed in the limiting groove. The bottom of the movable plate passes through the bottom of the limiting groove and extends into the cutting knife. A plurality of springs fixed to the inner wall of the limiting groove are fixed on the top of the movable plate.

[0021] In the present technical solution, when the cutting knife becomes dull after long-term use, the personnel can move the movable plate upwards. The movable plate moving upwards in the limit groove will squeeze the plurality of springs 2 to contract. When the bottom of the movable plate moves out of the cutting knife, the movable plate can release the fixation of the cutting knife. The personnel can then pull the cutting knife out of the slot and insert a new cutting knife into the slot. When the cutting knife completely enters the slot, under the action of the rebound force of the plurality of springs 2, the plurality of springs 2 will squeeze the movable plate, causing the movable plate to move downwards until the bottom of the movable plate is inserted into the cutting knife. At this time, the movable plate can fix the cutting knife, ensuring that the cutting knife can be easily replaced by the personnel and that no tools are required when replacing the cutting knife.

[0022] In the above technical solution, further, the bottom of the movable plate is plug-fitted with the cutting knife, and the movable plate is slidably connected with the lower pressing plate.

[0023] In this technical solution, it is ensured that the bottom of the movable plate can be inserted into the cutting knife, and it is ensured that the movable plate can slide normally in the lower pressing plate.

[0024] In the above technical solution, further, it also includes:

[0025] The collecting trough is provided in the base and is located below the limiting plate, and a collecting box is inserted and installed in the collecting trough.

[0026] In this technical solution, the punched and sheared sheet metal will fall into the collection box under the action of gravity, making it easy for personnel to collect it.

[0027] In the above technical solution, further, the sliding rod is slidably connected to the base, the output shaft of the hydraulic cylinder is slidably connected to the U-shaped frame, and both ends of the spring are tightly welded to the U-shaped frame and the extrusion plate respectively.

[0028] In this technical solution, it is ensured that the sliding rod can slide normally in the base, that the output shaft of the hydraulic cylinder can slide normally in the U-shaped frame, and that the structure of the spring 1 is stable.

[0029] In the above technical solution, further, the bottom of the extrusion plate is lower than the bottom of the cutting knife.

[0030] In this technical solution, it is ensured that the bottom of the extrusion plate contacts the sheet material before the bottom of the cutting knife.

[0031] The beneficial effects of the utility model are:

[0032] The camming mechanism is a kind of mechanism that is used for the lifting of the lifting link and the lifting of the lifting link, and the lifting of the lifting link is a kind of mechanism that is used for the lifting of the lifting link.

[0033] 2. The sheet metal punching and shearing device has a fixing component. When the cutting knife becomes dull after long-term use, the fixing component can release the fixing of the cutting knife. Then the personnel can pull the cutting knife out of the slot and insert a new cutting knife into the slot. When the cutting knife is completely inserted into the slot, the cutting knife is fixed by the fixing component, ensuring that the cutting knife can be easily replaced by the personnel and that no tools are required when replacing the cutting knife. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is one of the overall structural diagrams of the utility model;

[0035] Figure 2 This is the second schematic diagram of the overall structure of the utility model;

[0036] Figure 3 It is a schematic diagram of the detailed internal structure of the base in the utility model;

[0037] Figure 4 It is a schematic diagram of the cross-sectional structure of the U-shaped frame in the utility model;

[0038] Figure 5 This is a schematic diagram of the regional structure of the U-shaped frame in the utility model;

[0039] Figure 6 It is a schematic diagram of the cross-sectional structure of the lower pressing plate in the utility model;

[0040] Figure 7 For this utility model Figure 6 The enlarged structural diagram at A in the middle;

[0041] Figure 8 This is a schematic diagram of the structure of the explosion of the cutting knife in the utility model;

[0042] Fig. 9 It is a schematic diagram of the structure of the collection box explosion in the utility model.

[0043] The symbols in the figure are:

[0044] 1. Base; 2. Sliding groove; 3. Sliding plate; 4. Scale line; 5. Limit plate; 6. Sliding rod; 7. Threaded rod; 8. U-shaped frame; 9. Lower pressure plate; 10. Slot; 11. Cutting knife; 12. Damping rod; 13. Extrusion plate; 14. Spring 1; 15. Hydraulic cylinder; 16. Limit groove; 17. Moving plate; 18. Spring 2; 19. Collecting groove; 20. Collecting box. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0046] In the description of the present application, it should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0047] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0048] It should be noted that, in the description of the present application, the orientation or positional relationship indicated by terms such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise stated, these orientation words do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present application; the orientation words "inside and outside" refer to the inside and outside relative to the contour of each component itself.

[0049] It should be noted that, in the present application, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises one..." does not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be noted that the scope of the method and device in the embodiment of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0050] Embodiment 1:

[0051] See also Figure 1 - Fig. 9 As shown, this embodiment provides a sheet metal punching and shearing device, comprising:

[0052] A base 1, a sliding groove 2 is provided on one side of the base 1, a sliding plate 3 is slidably installed in the sliding groove 2, a scale line 4 is engraved on the top of the sliding plate 3, a limit plate 5 is fixedly installed on one end of the sliding plate 3, a sliding rod 6 is fixedly installed on one side of the limit plate 5, and one end of the sliding rod 6 extends into the base 1;

[0053] A driving assembly, which is located in the base 1 and is used to drive the sliding plate 3 to move;

[0054] A U-shaped frame 8 is fixedly mounted on the top of the base 1 and is located on one side of the sliding plate 3. A lower pressing plate 9 is slidably mounted in the U-shaped frame 8. A card slot 10 is provided at the bottom of the lower pressing plate 9. A cutting knife 11 is inserted and installed in the card slot 10. A hydraulic cylinder 15 is fixedly mounted on the top of the U-shaped frame 8. The output end of the hydraulic cylinder 15 passes through the top of the U-shaped frame 8 and is tightly welded to the lower pressing plate 9. A damping rod 12 is symmetrically fixedly mounted on the bottom of the lower pressing plate 9 and is located on one side of the cutting knife 11. The bottom ends of the two damping rods 12 are fixedly mounted with the same extrusion plate 13, and a spring 14 is sleeved on the damping rod 12;

[0055] The fixing assembly is located in the lower pressing plate 9 and is used to fix the cutting knife 11 .

[0056] Among them, through the set driving component, the driving component will drive the sliding plate 3 to move in the sliding groove 2, and at the same time, the sliding plate 3 will drive the limit plate 5 to move, and the limit plate 5 will drive the sliding rod 6 to slide in the base 1. At the same time, the personnel can observe the scale line 4 with their eyes, so as to accurately control the distance between the limit plate 5 and the base 1. Then the personnel can place the sheet material to be punched and sheared on the top of the base 1, and push the sheet material so that one side of the sheet material is against the limit plate 5, and then start the hydraulic cylinder 15. The output shaft of the hydraulic cylinder 15 will drive the lower pressing plate 9 to move downward, and the lower pressing plate 9 The downward movement will drive the cutting blade 11 and the two damping rods 12 to move downward, and the downward movement of the two damping rods 12 will drive the extrusion plate 13 to move downward. Since the bottom of the extrusion plate 13 is lower than the bottom of the cutting blade 11, the extrusion plate 13 will contact the sheet material before the cutting blade 11, and then the extrusion plate 13 will passively squeeze the damping rod 12 and the spring 14 to contract and squeeze the sheet material on the top of the base 1. The cutting blade 11 continues to move downward to punch and shear the sheet material, ensuring that the personnel can accurately control the punching and shearing length of the sheet material. At the same time, the operation is simple and convenient for personnel to use;

[0057] By setting up the fixing component, when the cutting knife 11 becomes dull after long-term use, the fixing component can release the fixing of the cutting knife 11, and then the personnel can pull the cutting knife 11 out of the card slot 10 and insert a new cutting knife 11 into the card slot 10. When the cutting knife 11 is completely inserted into the card slot 10, the cutting knife 11 is fixed by the fixing component again, ensuring that it is convenient for personnel to replace the cutting knife 11 and ensuring that no tools are required when replacing the cutting knife 11.

[0058] Embodiment 2:

[0059] This embodiment provides a sheet metal punching and shearing device, which, in addition to the technical solutions of the above embodiments, also has the following technical features, and the driving component includes:

[0060] The threaded rod 7 is rotatably mounted in the sliding groove 2, and one end of the threaded rod 7 penetrates the sliding plate 3 and the inner wall of the sliding groove 2 and extends to the outside.

[0061] Among them, the personnel can first rotate the threaded rod 7 according to the length of the sheet material that needs to be punched and sheared. Under the action of the thread, the threaded rod 7 rotates to drive the sliding plate 3 to move in the sliding groove 2, and the sliding plate 3 will drive the limit plate 5 to move, and the limit plate 5 will drive the sliding rod 6 to slide in the base 1. At the same time, the personnel can observe the scale line 4 with their eyes, so as to accurately control the distance between the limit plate 5 and the base 1. Then the personnel can place the sheet material that needs to be punched and sheared on the top of the base 1, and push the sheet material so that one side of the sheet material is against the limit plate 5, and then start the hydraulic cylinder 15, and the output shaft of the hydraulic cylinder 15 will drive The lower pressing plate 9 moves downward, and the downward movement of the lower pressing plate 9 will drive the cutting knife 11 and the two damping rods 12 to move downward. The downward movement of the two damping rods 12 will drive the extrusion plate 13 to move downward. Since the bottom of the extrusion plate 13 is lower than the bottom of the cutting knife 11, the extrusion plate 13 will contact the sheet material before the cutting knife 11, and then the extrusion plate 13 will passively squeeze the damping rod 12 and the spring 14 to contract and squeeze the sheet material on the top of the base 1. The cutting knife 11 continues to move downward to punch and shear the sheet material, ensuring that personnel can accurately control the punching and shearing length of the sheet material. At the same time, the operation is simple and convenient for personnel to use.

[0062] Embodiment 3:

[0063] This embodiment provides a sheet metal punching and shearing device, which, in addition to the technical solutions of the above embodiments, also has the following technical features: the threaded rod 7 is threadedly connected to the sliding plate 3, and one end of the threaded rod 7 is rotatably connected to the base 1.

[0064] Here, it is ensured that the rotation of the threaded rod 7 can drive the sliding plate 3 to move, and that one end of the threaded rod 7 can rotate normally in the base 1 .

[0065] Embodiment 4:

[0066] This embodiment provides a sheet metal punching and shearing device, which, in addition to the technical solutions of the above embodiments, also has the following technical features, and the fixing component includes:

[0067] The limiting groove 16 is opened in the lower pressure plate 9 and is located above the cutting knife 11. A movable plate 17 is slidably installed in the limiting groove 16. The bottom of the movable plate 17 passes through the bottom of the limiting groove 16 and extends into the cutting knife 11. A plurality of springs 18 fixed to the inner wall of the limiting groove 16 are fixedly installed on the top of the movable plate 17.

[0068] Among them, when the cutting knife 11 becomes dull after long-term use, the personnel can move the movable plate 17 upwards. The movable plate 17 moves upward in the limit groove 16 to squeeze the plurality of springs 18 to shrink. When the bottom of the movable plate 17 moves out of the cutting knife 11, the movable plate 17 can release the fixing of the cutting knife 11. Then the personnel can pull the cutting knife 11 out of the card slot 10 and insert the new cutting knife 11 into the card slot 10. When the cutting knife 11 completely enters the card slot 10, under the action of the rebound force of the plurality of springs 18, the plurality of springs 18 will squeeze the movable plate 17, so that the movable plate 17 moves downward until the bottom of the movable plate 17 is inserted into the cutting knife 11. At this time, the movable plate 17 can fix the cutting knife 11, ensuring that it is convenient for personnel to replace the cutting knife 11 and ensuring that no tools are required when replacing the cutting knife 11.

[0069] Embodiment 5:

[0070] This embodiment provides a sheet metal punching and shearing device, which, in addition to the technical solutions of the above embodiments, also has the following technical features: the bottom of the movable plate 17 is plug-fitted with the cutting knife 11, and the movable plate 17 is slidably connected with the lower pressing plate 9.

[0071] Here, it is ensured that the bottom of the movable plate 17 can be inserted into the cutting knife 11 , and it is ensured that the movable plate 17 can slide normally in the lower pressing plate 9 .

[0072] Embodiment 6:

[0073] This embodiment provides a sheet metal punching and shearing device, which, in addition to the technical solutions of the above embodiments, also has the following technical features, including:

[0074] The collecting tank 19 is provided in the base 1 and is located below the limiting plate 5 . A collecting box 20 is inserted and installed in the collecting tank 19 .

[0075] The punched and sheared sheet materials will fall into the collection box 20 under the action of gravity, so that personnel can collect them easily.

[0076] Embodiment 7:

[0077] This embodiment provides a sheet metal punching and shearing device, which, in addition to the technical solutions of the above-mentioned embodiments, also has the following technical features: the sliding rod 6 is slidably connected to the base 1, the output shaft of the hydraulic cylinder 15 is slidably connected to the U-shaped frame 8, and the two ends of the spring 14 are tightly welded to the U-shaped frame 8 and the extrusion plate 13 respectively.

[0078] Among them, it is ensured that the sliding rod 6 can slide normally in the base 1, that the output shaft of the hydraulic cylinder 15 can slide normally in the U-shaped frame 8, and that the structure of the spring 14 is stable.

[0079] Embodiment 8:

[0080] This embodiment provides a sheet metal punching and shearing device, which, in addition to the technical solutions of the above embodiments, also has the following technical features: the bottom of the extrusion plate 13 is lower than the bottom of the cutting knife 11.

[0081] It is ensured that the bottom of the pressing plate 13 contacts the sheet material before the bottom of the cutting blade 11 .

[0082] Working principle: When using this device, the personnel can first rotate the threaded rod 7 according to the length of the sheet material to be punched and sheared. Under the action of the thread, the threaded rod 7 rotates to drive the sliding plate 3 to move in the sliding groove 2, and the sliding plate 3 will drive the limit plate 5 to move, and the limit plate 5 will drive the sliding rod 6 to slide in the base 1. At the same time, the personnel can observe the scale line 4 with their eyes, so as to accurately control the distance between the limit plate 5 and the base 1. Then the personnel can place the sheet material to be punched and sheared on the top of the base 1, and push the sheet material so that one side of the sheet material is against the limit plate 5, and then start the hydraulic cylinder 15, and the output shaft of the hydraulic cylinder 15 will drive the lower pressure plate 9 to move downward The downward movement of the lower pressing plate 9 will drive the cutting blade 11 and the two damping rods 12 to move downward, and the downward movement of the two damping rods 12 will drive the extrusion plate 13 to move downward. Since the bottom of the extrusion plate 13 is lower than the bottom of the cutting blade 11, the extrusion plate 13 will contact the sheet material before the cutting blade 11, and then the extrusion plate 13 will passively squeeze the damping rod 12 and the spring 14 to contract and fix the sheet material on the top of the base 1. The cutting blade 11 continues to move downward to punch and shear the sheet material. The punched and sheared sheet material will fall into the collection box 20 under the action of gravity, ensuring that personnel can accurately control the punching and shearing length of the sheet material. At the same time, the operation is simple and convenient for personnel to use.

[0083] When the cutting knife 11 becomes dull after long-term use, personnel can move the movable plate 17 upwards. The movable plate 17 moves upwards in the limiting groove 16 to squeeze the plurality of springs 18 to shrink. When the bottom of the movable plate 17 moves out of the cutting knife 11, the movable plate 17 can release the fixing of the cutting knife 11. Then the personnel can pull the cutting knife 11 out of the card slot 10 and insert a new cutting knife 11 into the card slot 10. When the cutting knife 11 completely enters the card slot 10, under the action of the rebound force of the plurality of springs 18, the plurality of springs 18 will squeeze the movable plate 17 to move downwards until the bottom of the movable plate 17 is inserted into the cutting knife 11. At this time, the movable plate 17 can fix the cutting knife 11, ensuring that it is convenient for personnel to replace the cutting knife 11 and ensuring that no tools are required when replacing the cutting knife 11.

[0084] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A sheet metal punching and shearing device, characterized in that: include: A base (1), wherein a sliding groove (2) is provided on one side of the base (1), a sliding plate (3) is slidably installed in the sliding groove (2), a scale line (4) is engraved on the top of the sliding plate (3), a limit plate (5) is fixedly installed on one end of the sliding plate (3), a sliding rod (6) is fixedly installed on one side of the limit plate (5), and one end of the sliding rod (6) extends into the base (1); A driving assembly, the driving assembly being located in the base (1) and being used to drive the sliding plate (3) to move; A U-shaped frame (8), wherein the U-shaped frame (8) is fixedly mounted on the top of the base (1) and is located on one side of the sliding plate (3); a lower pressing plate (9) is slidably mounted in the U-shaped frame (8); a slot (10) is provided at the bottom of the lower pressing plate (9); a cutting knife (11) is inserted and installed in the slot (10); a hydraulic cylinder (15) is fixedly mounted on the top of the U-shaped frame (8); an output end of the hydraulic cylinder (15) passes through the top of the U-shaped frame (8) and is tightly welded to the lower pressing plate (9); a damping rod (12) is symmetrically fixedly mounted at the bottom of the lower pressing plate (9) and is located on one side of the cutting knife (11); the bottom ends of the two damping rods (12) are fixedly mounted with the same extrusion plate (13); and a spring (14) is sleeved on the damping rod (12); A fixing component is located in the lower pressing plate (9) and is used to fix the cutting knife (11).

2. A sheet metal punching and shearing device according to claim 1, characterized in that: The drive assembly comprises: A threaded rod (7) is rotatably mounted in the sliding groove (2), and one end of the threaded rod (7) penetrates the sliding plate (3) and the inner wall of the sliding groove (2) and extends to the outside.

3. A sheet metal punching and shearing device according to claim 2, characterized in that: The threaded rod (7) is threadedly connected to the sliding plate (3), and one end of the threaded rod (7) is rotatably connected to the base (1).

4. A sheet metal punching and shearing device according to claim 1, characterized in that: The fixing assembly comprises: A limiting groove (16), wherein the limiting groove (16) is provided in the lower pressure plate (9) and is located above the cutting blade (11); a movable plate (17) is slidably installed in the limiting groove (16); the bottom of the movable plate (17) passes through the bottom of the limiting groove (16) and extends into the cutting blade (11); a plurality of springs (18) fixed to the inner wall of the limiting groove (16) are fixedly installed on the top of the movable plate (17).

5. A sheet metal punching and shearing device according to claim 4, characterized in that: The bottom of the movable plate (17) is plug-fitted with the cutting knife (11), and the movable plate (17) is slidably connected with the lower pressing plate (9).

6. A sheet metal punching and shearing device according to claim 1, characterized in that: Also includes: A collecting trough (19), the collecting trough (19) is opened in the base (1) and is located below the limiting plate (5), and a collecting box (20) is inserted and installed in the collecting trough (19).

7. A sheet metal punching and shearing device according to claim 1, characterized in that: The sliding rod (6) is slidably connected to the base (1), the output shaft of the hydraulic cylinder (15) is slidably connected to the U-shaped frame (8), and the two ends of the spring 1 (14) are tightly welded to the U-shaped frame (8) and the extrusion plate (13) respectively.

8. A sheet metal punching and shearing device according to claim 1, characterized in that: The bottom of the squeezing plate (13) is lower than the bottom of the cutting knife (11).

Images