A cutter latch for printer self-locking

Abstract

The present invention belongs to the technical field of printers, and particularly relates to a cutter lock for printer self-locking, including a bottom plate, on the top of which a housing is installed. It further includes: a sliding groove opened on the bottom plate, a convex block slidably installed in the sliding groove, an opening opened on the bottom plate, a moving cutter inserted and installed on the convex block and located on one side of the opening, a U-shaped plate fixedly installed on the moving cutter, and a fixing plate fixed to the inner wall of the housing inserted in the U-shaped plate; a control component located in the housing and used to drive the reciprocating displacement of the moving cutter and limit the moving cutter; when the whole device of the present invention is in use, it ensures that the moving cutter and the fixed cutter can be locked and disassembled. The locking and disassembly methods are relatively convenient, time-saving and labor-saving. Moreover, it ensures that the moving cutter can be more stable during the displacement process, so that the printing paper can be cut more neatly and deviation can be avoided.

Description

Technical Field

[0001] The present invention belongs to the technical field of printers, and particularly relates to a cutter lock for printer self-locking. Background Art

[0002] A printer is one of the output devices of a computer, used to print the processing results of the computer on relevant media. There are three indicators to measure the quality of a printer: print resolution, print speed, and noise. There are many types of printers. According to whether the printing element has a striking action on the paper, it is divided into impact printers and non-impact printers.

[0003] Some existing printers are equipped with a cutter. However, the cutter in some existing printers is not easy to replace. If the cutter cannot be replaced in time, when it wears out, is damaged, etc., it may not be able to accurately cut the printing paper, resulting in problems such as paper jams and tears during the printing process, thus interrupting the printing task and requiring reprinting, reducing the printing efficiency. In view of this, we propose a cutter lock for printer self-locking. Summary of the Invention

[0004] The purpose of the present invention is to provide a cutter lock for printer self-locking to solve the problems raised in the above background art.

[0005] In view of this, the present invention provides a cutter lock for printer self-locking, including a bottom plate. An outer shell is installed on the top of the bottom plate, and further includes:

[0006] A sliding groove is opened on the bottom plate. A convex block is slidably installed in the sliding groove. An opening is opened on the bottom plate. A moving cutter is inserted and installed on the convex block and on one side of the opening. A U-shaped plate is fixedly installed on the moving cutter. A fixing plate fixed to the inner wall of the outer shell is inserted and installed in the U-shaped plate;

[0007] A control component is located inside the outer shell and is used to drive the moving cutter to reciprocate and limit the moving cutter;

[0008] A protective shell is inserted and installed on the outer shell. Two sliding grooves are opened inside the outer shell. A fixed cutter is provided on the bottom plate and on the other side of the opening. Rectangular rods are fixedly installed on both sides of the fixed cutter and inside the outer shell. Through grooves are opened on the rectangular rods. A limiting block is slidably installed in the sliding groove. One end of the limiting block penetrates through the top of the outer shell and extends into the through groove. A first spring tightly welded to the inner wall of the sliding groove is fixedly installed on the top of the limiting block.

[0009] In this technical solution, during use, the printed label can move outside through the opening. When the label needs to be cut, the control component drives the moving cutter to displace towards the direction close to the fixed cutter. At this time, the U-shaped plate will slide on the fixed plate to ensure the stability of the displacement of the moving cutter until the moving cutter and the fixed cutter cooperate to cut off the label.

[0010] When the moving cutter and the fixed cutter need to be disassembled, the staff can lift the limit block by hand, so that one end of the limit block is completely withdrawn from the through groove and the housing. At this time, the first spring will contract under the extrusion of the limit block until the two limit blocks respectively enter the two sliding grooves. At this time, the moving cutter will be released from fixation. Then, the protective shell can be moved horizontally to be withdrawn from the housing. At this time, the two rectangular rods will be released from fixation. Then, the rectangular rods on both sides of the fixed cutter can be withdrawn from the housing. Subsequently, the staff can release the limit on the moving cutter through the set control component and then pull the moving cutter so that there is no obstruction on the top of the moving cutter. At this time, the U-shaped plate will be withdrawn from the fixed plate, and then the staff can pull the moving cutter upward.

[0011] In the above technical solution, further, the control component includes:

[0012] A fixed block, which is fixedly installed in the housing. A long plate is fixedly installed on one side of the fixed block. A limit groove is opened in the long plate. A threaded rod is rotatably installed in the limit groove. A moving plate is slidably installed on the threaded rod in the limit groove.

[0013] A groove, which is opened in the moving plate. A plug is slidably installed in the groove. A return plate is fixedly installed on the top of the moving cutter. One end of the plug extends into the return plate. A pull rod is fixedly installed on the top of the plug. One end of the pull rod penetrates through the top of the groove and extends to the outside. A second spring is sleeved on the pull rod in the groove.

[0014] A cavity, which is opened in the fixed block. A first bevel gear is rotatably installed in the cavity. A second bevel gear is rotatably installed on one side of the first bevel gear in the cavity. A connecting plate is fixedly installed in the housing. A motor is fixedly installed on the side of the connecting plate away from the fixed block. The output end of the motor penetrates through the connecting plate and the fixed block and extends into the cavity and is coaxially connected with the first bevel gear. One end of the second bevel gear penetrates through one side of the cavity and the long plate and extends into the limit groove and is coaxially connected with the threaded rod.

[0015] In this technical solution, the motor can be powered on and started. Subsequently, the output shaft of the motor will drive the first bevel gear to rotate. Under the action of meshing, the first bevel gear will drive the second bevel gear to rotate. Then, the second bevel gear will drive the threaded rod to rotate. Under the action of the thread, the threaded rod will drive the displacement moving plate to displace. The moving plate will drive the plug to displace. Subsequently, the plug will drive the loop plate to displace in the direction close to the fixed cutter.

[0016] The staff can pull up the pull rod, so that the pull rod drives the plug to displace upward. At this time, the second spring will be compressed and contract until one end of the plug is completely withdrawn from the loop plate. Then, the moving cutter can be pulled.

[0017] In the above technical solution, further, the moving plate is threadedly connected to the threaded rod. The two ends of the second spring are tightly welded to the top of the plug and the inner wall of the groove respectively. One end of the plug is in plug-in fit with the loop plate.

[0018] In this technical solution, under the action of the thread, it is ensured that the rotation of the threaded rod can drive the moving plate to displace, the structure of the second spring is stable, and one end of the plug can be inserted into the loop plate.

[0019] In the above technical solution, further, the second bevel gear meshes with the first bevel gear. One end of the second bevel gear is rotationally connected to the fixed block and the long plate. The output shaft of the motor is rotationally connected to the connecting plate and the fixed block.

[0020] In this technical solution, under the action of meshing, it is ensured that the rotation of the first bevel gear can drive the second bevel gear to rotate, the second bevel gear can rotate normally, and the motor can rotate normally.

[0021] In the above technical solution, further, the bottom of the fixed plate contacts the top of the moving cutter, and the bottom of the long plate contacts the top of the moving cutter.

[0022] In this technical solution, it is ensured that the fixed plate can limit the moving cutter to prevent the moving cutter from moving upward, and the long plate can limit the moving cutter.

[0023] In the above technical solution, further, one end of the limit block is in plug-in fit with the housing and the rectangular rod, and the limit block is in an L-shaped structure.

[0024] In this technical solution, it is ensured that one end of the limit block can be inserted into the housing and the rectangular rod, and the limit block is convenient for the staff to lift upward by hand.

[0025] In the above technical solution, further, a sliding groove is formed in the bottom plate and located at the bottom of the moving cutter. A convex block is slidably installed in the sliding groove. One end of the convex block extends into the moving cutter, and one end of the convex block is inserted and matched with the moving cutter.

[0026] In this technical solution, the moving cutter will drive the convex block to slide in the sliding groove to ensure the stability of the displacement of the moving cutter.

[0027] In the above technical solution, further, the moving cutter is located above the fixed cutter.

[0028] In this technical solution, it is ensured that the moving cutter and the fixed cutter can be staggered and matched, so that the paper can be cut off.

[0029] In the above technical solution, further, the rectangular rod is inserted and matched with the housing.

[0030] In this technical solution, it is ensured that the rectangular rod can be inserted into the housing.

[0031] In the above technical solution, further, the housing and the bottom plate are of an integrally formed structure.

[0032] In this technical solution, the structure between the housing and the bottom plate is ensured to be stable.

[0033] The beneficial effects of the present invention are:

[0034] 1. For the cutter lock for printer self-locking, through the cooperation of the convex block, rectangular rod, housing, sliding groove, first spring, limiting block and control component, it is ensured that the moving cutter and the fixed cutter can be locked and disassembled. The locking and disassembly methods are relatively convenient, saving time and effort.

[0035] 2. For the cutter lock for printer self-locking, through the cooperation of the fixed plate, U-shaped plate, sliding groove, convex block and long plate, it is ensured that the moving cutter can be more stable during the displacement process, so that the cutting of the printing paper is more neat and the deviation is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0037] Figure 2 is a schematic diagram of the structure inside the protective shell of the present invention;

[0038] Figure 3 For the present invention Figure 2 is an enlarged schematic diagram of part A in;

[0039] Figure 4Schematic diagram of the structure of the fixed cutter and the rectangular rod in the present invention;

[0040] Figure 5 In the present invention Figure 4 Enlarged schematic diagram of the structure at position B;

[0041] Figure 6 Schematic diagram of the internal structure of the housing in the present invention;

[0042] Figure 7 Schematic diagram of the internal structure of the long plate in the present invention;

[0043] Figure 8 In the present invention Figure 7 Enlarged schematic diagram of the structure at position C;

[0044] Figure 9 Schematic diagram of the internal structure of the fixed block, the long plate and the moving plate in the present invention;

[0045] Figure 10 Schematic diagram of the structure of the bottom plate in the present invention.

[0046] The markings in the figure are as follows:

[0047] 1. Bottom plate; 2. Housing; 3. Moving cutter; 4. Fixed cutter; 5. Opening; 6. Protective shell; 7. Convex block; 8. Chute; 9. Limit block; 10. First spring; 11. Rectangular rod; 12. Through groove; 13. Sliding groove; 14. Fixed plate; 15. U-shaped plate; 16. Moving plate; 17. Fixed block; 18. Long plate; 19. Connecting plate; 20. Motor; 21. Threaded rod; 22. Groove; 23. Second spring; 24. Insert block; 25. Return plate; 26. Pull rod; 27. Limit groove; 28. First bevel gear; 29. Cavity; 30. Second bevel gear. Detailed implementation manners

[0048] Next, the technical solutions in the embodiments of the present application will be clearly described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope protected by the present application.

[0049] 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 of the present application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not require further discussion in subsequent drawings.

[0050] It should be noted that the terms "first", "second", etc. in the description 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 such data can be interchanged where appropriate 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 the same category and do not limit the number of objects. For example, the first object can be one or multiple. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / ", generally represents an "or" relationship between the associated objects before and after.

[0051] It should be noted that in the description of the present application, the orientation or positional relationships indicated by the orientation terms such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal", and "top, bottom" are usually based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Without contrary explanations, these orientation terms do not indicate and imply that the devices or elements referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus cannot be construed as limiting the protection scope of the present application; the orientation terms "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0052] It should be noted that in this application, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising a..." does not exclude the presence of additional identical elements in the process, method, article or device comprising that element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of this 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 the reverse order according to the functions involved. For example, the described method may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples. Embodiment 1:

[0053] Please refer to Figure 1 - Figure 10 As shown, this embodiment provides a cutter lock for printer self-locking, including a bottom plate 1, on the top of which a housing 2 is installed. It further includes:

[0054] A sliding groove 13 is opened on the bottom plate 1. A convex block 7 is slidably installed in the sliding groove 13. An opening 5 is opened on the bottom plate 1. A moving cutter 3 is inserted and installed on the convex block 7 and on one side of the opening 5. A U-shaped plate 15 is fixedly installed on the moving cutter 3. A fixing plate 14 fixed to the inner wall of the housing 2 is inserted and installed in the U-shaped plate 15;

[0055] A control component is located inside the housing 2 and is used to drive the moving cutter 3 to reciprocate and limit the displacement of the moving cutter 3;

[0056] A protective shell 6 is inserted and installed on the housing 2. Two sliding grooves 8 are opened inside the housing 2. A fixed cutter 4 is provided on the bottom plate 1 and on the other side of the opening 5. Rectangular rods 11 are fixedly installed on both sides of the fixed cutter 4 and inside the housing 2. Through grooves 12 are opened on the rectangular rods 11. Limit blocks 9 are slidably installed in the sliding grooves 8. One end of the limit block 9 penetrates through the top of the housing 2 and extends into the through groove 12. A first spring 10 tightly welded to the inner wall of the sliding groove 8 is fixedly installed on the top of the limit block 9.

[0057] Among them, during use, the printing label can move outside through the opening 5. When the label needs to be cut, the control component drives the moving cutter 3 to displace towards the direction close to the fixed cutter 4. At this time, the U-shaped plate 15 will slide on the fixed plate 14 to ensure the stability of the displacement of the moving cutter 3 until the moving cutter 3 and the fixed cutter 4 cooperate to cut off the label;

[0058] When the moving cutter 3 and the fixed cutter 4 need to be disassembled, the staff can lift the limit block 9 by hand, so that one end of the limit block 9 is completely withdrawn from the through groove 12 and the housing 2. At this time, the first spring 10 will contract under the extrusion of the limit block 9 until the two limit blocks 9 enter the two sliding grooves 8 respectively. At this time, the moving cutter 3 will be released from fixation. Then, the protective shell 6 can be moved horizontally to be withdrawn from the housing 2. At this time, the two rectangular rods 11 will be released from fixation. Then, the rectangular rods 11 on both sides of the fixed cutter 4 can be withdrawn from the housing 2. Subsequently, the staff can release the limit on the moving cutter 3 through the set control component, and then pull the moving cutter 3 so that there is no obstruction on the top of the moving cutter 3. At this time, the U-shaped plate 15 will be withdrawn from the fixed plate 14, and then the staff can pull the moving cutter 3 upward. Embodiment 2:

[0059] This embodiment provides a cutter lock for printer self-locking. In addition to including the technical solutions of the above embodiments, it also has the following technical features. The control component includes:

[0060] A fixed block 17, which is fixedly installed in the housing 2. A long plate 18 is fixedly installed on one side of the fixed block 17. A limit groove 27 is formed in the long plate 18. A threaded rod 21 is rotatably installed in the limit groove 27. A moving plate 16 is slidably installed on the threaded rod 21 in the limit groove 27;

[0061] A groove 22, which is formed in the moving plate 16. A plug 24 is slidably installed in the groove 22. A return plate 25 is fixedly installed on the top of the moving cutter 3. One end of the plug 24 extends into the return plate 25. A pull rod 26 is fixedly installed on the top of the plug 24. One end of the pull rod 26 penetrates through the top of the groove 22 and extends to the outside. A second spring 23 is sleeved on the pull rod 26 in the groove 22;

[0062] The cavity 29 is opened in the fixed block 17. A first bevel gear 28 is rotatably installed in the cavity 29. A second bevel gear 30 is rotatably installed in the cavity 29 and on one side of the first bevel gear 28. A connecting plate 19 is fixedly installed in the housing 2. A motor 20 is fixedly installed on the side of the connecting plate 19 away from the fixed block 17. The output end of the motor 20 passes through the connecting plate 19 and the fixed block 17 and extends into the cavity 29 and is coaxially connected to the first bevel gear 28. One end of the second bevel gear 30 passes through one side of the cavity 29 and the long plate 18 and extends into the limit groove 27 and is coaxially connected to the threaded rod 21.

[0063] Among them, the motor 20 can be powered on and started. Subsequently, the output shaft of the motor 20 will drive the first bevel gear 28 to rotate. Under the meshing action, the first bevel gear 28 will drive the second bevel gear 30 to rotate. Then the second bevel gear 30 will drive the threaded rod 21 to rotate. Under the action of the thread, the threaded rod 21 will drive the displacement moving plate 16 to displace. The moving plate 16 will drive the plug 24 to displace. Subsequently, the plug 24 will drive the loop plate 25 to displace towards the direction close to the fixed cutter 4.

[0064] The staff can pull up the pull rod 26, so that the pull rod 26 drives the plug 24 to displace upward. At this time, the second spring 23 will be compressed and contract until one end of the plug 24 is completely withdrawn from the loop plate 25, and then the moving cutter 3 can be pulled. Embodiment 3:

[0065] This embodiment provides a cutter lock for printer self-locking. In addition to including the technical solutions of the above embodiments, it also has the following technical features. The moving plate 16 is threadedly connected to the threaded rod 21. The two ends of the second spring 23 are tightly welded to the top of the plug 24 and the inner wall of the groove 22 respectively. One end of the plug 24 is inserted and matched with the loop plate 25.

[0066] Among them, under the action of the thread, it is ensured that the rotation of the threaded rod 21 can drive the moving plate 16 to displace, ensure the structural stability of the second spring 23, and ensure that one end of the plug 24 can be inserted into the loop plate 25. Embodiment 4:

[0067] This embodiment provides a cutter lock for printer self-locking. In addition to including the technical solutions of the above embodiments, it also has the following technical features. The second bevel gear 30 meshes with the first bevel gear 28. One end of the second bevel gear 30 is rotatably connected to the fixed block 17 and the long plate 18. The output shaft of the motor 20 is rotatably connected to the connecting plate 19 and the fixed block 17.

[0068] Among them, under the action of meshing, it is ensured that when the first bevel gear 28 rotates, it can drive the second bevel gear 30 to rotate, ensuring that the second bevel gear 30 can rotate normally and the motor 20 can rotate normally. Embodiment 5:

[0069] This embodiment provides a cutter lock for printer self-locking. In addition to the technical solutions of the above embodiments, it also has the following technical features. The bottom of the fixing plate 14 contacts the top of the moving cutter 3, and the bottom of the long plate 18 contacts the top of the moving cutter 3.

[0070] Among them, it is ensured that the fixing plate 14 can limit the moving cutter 3 to prevent the moving cutter 3 from moving upward, and it is ensured that the long plate 18 can limit the moving cutter 3. Embodiment 6:

[0071] This embodiment provides a cutter lock for printer self-locking. In addition to the technical solutions of the above embodiments, it also has the following technical features. One end of the limiting block 9 is inserted and matched with the housing 2 and the rectangular rod 11, and the limiting block 9 is in an L-shaped structure.

[0072] Among them, it is ensured that one end of the limiting block 9 can be inserted into the housing 2 and the rectangular rod 11, and it is ensured that the limiting block 9 can be easily lifted upward by the staff. Embodiment 7:

[0073] This embodiment provides a cutter lock for printer self-locking. In addition to the technical solutions of the above embodiments, it also has the following technical features. A sliding groove 13 is formed in the bottom plate 1 and at the bottom of the moving cutter 3. A convex block 7 is slidably installed in the sliding groove 13. One end of the convex block 7 extends into the moving cutter 3, and one end of the convex block 7 is inserted and matched with the moving cutter 3.

[0074] Among them, the moving cutter 3 will drive the convex block 7 to slide in the sliding groove 13 to ensure the stability of the displacement of the moving cutter 3. Embodiment 8:

[0075] This embodiment provides a cutter lock for printer self-locking. In addition to the technical solutions of the above embodiments, it also has the following technical features. The moving cutter 3 is located on the top of the fixed cutter 4.

[0076] Among them, it is ensured that the moving cutter 3 and the fixed cutter 4 can be staggered and matched so as to cut the paper. Embodiment 9:

[0077] This embodiment provides a cutter lock for printer self-locking. In addition to the technical solutions of the above embodiments, it also has the following technical features. The rectangular rod 11 is inserted and matched with the housing 2.

[0078] Among them, it is ensured that the rectangular rod 11 can be inserted into the housing 2. Embodiment 10:

[0079] This embodiment provides a cutter lock for printer self-locking. In addition to including the technical solutions of the above embodiments, it also has the following technical features that the housing 2 and the bottom plate 1 are of an integrally formed structure.

[0080] Among them, the structure between the housing 2 and the bottom plate 1 is ensured to be stable.

[0081] Working principle: When in use, the printed label can move outside through the opening 5. When it is necessary to cut the printing paper, the motor 20 can be powered on and started. Subsequently, the output shaft of the motor 20 will drive the first bevel gear 28 to rotate. Under the meshing action, the first bevel gear 28 will drive the second bevel gear 30 to rotate. Then the second bevel gear 30 will drive the threaded rod 21 to rotate. Under the action of the thread, the threaded rod 21 will drive the displacement moving plate 16 to displace. The moving plate 16 will drive the plug 24 to displace. Subsequently, the plug 24 will drive the loop plate 25 to displace towards the direction close to the fixed cutter 4. At this time, the moving cutter 3 will also displace towards the direction close to the fixed cutter 4. At this time, the U-shaped plate 15 will slide on the fixed plate 14. And the moving cutter 3 will drive the convex block 7 to slide in the sliding groove 13 to ensure the stability of the displacement of the moving cutter 3 until the moving cutter 3 and the fixed cutter 4 cooperate to cut off the printing paper;

[0082] When it is necessary to disassemble the moving cutter 3 and the fixed cutter 4, the staff can lift the limit block 9 by hand so that one end of the limit block 9 is completely withdrawn from the through groove 12 and the housing 2. At this time, the first spring 10 will be compressed and contracted by the limit block 9 until the two limit blocks 9 respectively enter the two sliding grooves 8. At this time, the moving cutter 3 will be released from fixation. Then the protective shell 6 can be moved horizontally so that the protective shell 6 is withdrawn from the housing 2. At this time, the two rectangular rods 11 will be released from fixation. Then the rectangular rods 11 on both sides of the fixed cutter 4 can be withdrawn from the housing 2. Subsequently, the staff can pull up the pull rod 26 so that the pull rod 26 drives the plug 24 to displace upward. At this time, the second spring 23 will be compressed and contracted until one end of the plug 24 is completely withdrawn from the loop plate 25. Then the moving cutter 3 can be pulled so that the long plate 18 and the fixed plate 14 are no longer located on the top of the moving cutter 3. At this time, the U-shaped plate 15 will be withdrawn from the fixed plate 14. Then the staff can pull up the moving cutter 3 so that the moving cutter 3 is taken out from the convex block 7.

[0083] The embodiments of the present application have been described above in conjunction with the accompanying drawings. Without 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 specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all of them fall within the protection scope of the present application.

Claims

1. A cutter lock for self-locking a printer, comprising a bottom plate, a shell is mounted on the top of the bottom plate, characterized in that: Also includes: A sliding groove, the sliding groove is provided on the bottom plate, a convex block is slidably installed in the sliding groove, an opening is provided on the bottom plate, a movable cutter is plugged and installed on the convex block and on one side of the opening, a U-shaped plate is fixedly installed on the movable cutter, and a fixed plate fixed to the inner wall of the shell is plugged and installed in the U-shaped plate; A control component, which is located in the housing and is used to drive the movable cutter to move back and forth and to limit the movable cutter; A protective shell, the protective shell is plugged and installed on the outer shell, two slide grooves are provided in the outer shell, a fixed cutter is provided on the bottom plate and on the other side of the opening, rectangular rods are fixedly installed on both sides of the fixed cutter and located in the outer shell, a through groove is provided on the rectangular rod, a limit block is slidably installed in the slide groove, one end of the limit block passes through the top of the outer shell and extends into the through groove, and a first spring tightly welded to the inner wall of the slide groove is fixedly installed on the top of the limit block.

2. A cutter lock for self-locking a printer according to claim 1, characterized in that: The control component comprises: A fixed block, the fixed block is fixedly installed in the housing, a long plate is fixedly installed on one side of the fixed block, a limiting groove is provided in the long plate, a threaded rod is rotatably installed in the limiting groove, and a movable plate is slidably installed in the limiting groove and on the threaded rod; A groove, wherein the groove is provided in the movable plate, an insert block is slidably installed in the groove, a circular plate is fixedly installed on the top of the movable cutter, one end of the insert block extends into the circular plate, a pull rod is fixedly installed on the top of the insert block, one end of the pull rod passes through the top of the groove and extends to the outside, and a second spring is sleeved on the pull rod and located in the groove; A cavity, wherein the cavity is opened in the fixed block, a first bevel gear is rotatably installed in the cavity, a second bevel gear is rotatably installed in the cavity and on one side of the first bevel gear, a connecting plate is fixedly installed in the shell, a motor is fixedly installed on the side of the connecting plate away from the fixed block, an output end of the motor passes through the connecting plate and the fixed block, extends into the cavity and is coaxially connected to the first bevel gear, one end of the second bevel gear passes through one side of the cavity and the long plate, extends into the limiting groove and is coaxially connected to the threaded rod.

3. A cutter lock for self-locking a printer according to claim 2, characterized in that: The movable plate is threadedly connected to the threaded rod, the two ends of the second spring are tightly welded to the top of the plug block and the inner wall of the groove respectively, and one end of the plug block is plugged and matched with the circular plate.

4. A cutter lock buckle for self-locking a printer according to claim 2, characterized in that: The second bevel gear is meshed with the first bevel gear, one end of the second bevel gear is rotatably connected to the fixing block and the long plate, and the output shaft of the motor is rotatably connected to the connecting plate and the fixing block.

5. A cutter lock for self-locking a printer according to claim 4, characterized in that: The bottom of the fixed plate contacts the top of the moving cutter, and the bottom of the long plate contacts the top of the moving cutter.

6. A cutter lock for self-locking a printer according to claim 1, characterized in that: One end of the limit block is plugged into and matched with the housing and the rectangular rod, and the limit block is in an L-shaped structure.

7. A cutter lock for self-locking a printer according to claim 1, characterized in that: A sliding groove is provided in the bottom plate and at the bottom of the movable cutter. A convex block is slidably installed in the sliding groove. One end of the convex block extends into the movable cutter, and one end of the convex block is plugged and matched with the movable cutter.

8. A cutter lock buckle for self-locking a printer according to claim 1, characterized in that: The movable cutter is located on top of the fixed cutter.

9. A cutter lock buckle for self-locking a printer according to claim 1, characterized in that: The rectangular rod is plug-fitted with the housing.

10. A cutter lock buckle for self-locking a printer according to claim 1, characterized in that: The shell and the bottom plate are an integrally formed structure.

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