Cutter lock catch for printer self-locking

Abstract

The invention belongs to the technical field of printers, and particularly relates to a cutter lock catch for self-locking of a printer, which comprises a bottom plate and a sliding groove, a shell is mounted at the top of the bottom plate, the sliding groove is formed in the bottom plate, a convex block is slidably mounted in the sliding groove, an opening is formed in the bottom plate, and the convex block is slidably mounted in the sliding groove; a movable cutter is mounted on the convex block and located on one side of the opening in an inserted mode, a U-shaped plate is fixedly mounted on the movable cutter, and a fixing plate fixed to the inner wall of the shell is mounted in the U-shaped plate in an inserted mode. The control assembly is located in the shell and used for driving the movable cutter to move in a reciprocating mode and limiting the movable cutter. When the whole device is used, it is ensured that the movable cutter and the fixed cutter can be locked and disassembled, the locking and disassembling modes are convenient, time and labor are saved, it is ensured that the movable cutter can be more stable in the displacement process, and therefore printing paper can be cut off more orderly, and deviation is avoided.

Description

Technical Field

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

[0002] A printer is one of the output devices of a computer, used to print the results of computer processing 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, and they are divided into impact printers and non-impact printers according to whether the printing element has an impact action on the paper.

[0003] Some existing printers are equipped with cutters, but the cutters in some existing printers are not easy to replace. If the cutter cannot be replaced in time, when it is worn or damaged, it may not be able to accurately cut the printed paper, resulting in paper jams, tearing and other problems during the printing process, thereby interrupting the printing task and requiring reprinting, which reduces the printing efficiency. In view of this, we propose a cutter lock for self-locking the printer. Summary of the invention

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

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

[0006] In the technical solution, when in use, the printed label can be moved to the outside through the opening. When the label needs to be cut, the control component is set to drive the mobile cutter to move in 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 mobile cutter until the mobile cutter and the fixed cutter cooperate to cut the label; When the movable 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 pulled out from the through slot and the shell. At this time, the first spring will shrink due to the squeezing of the limit block until the two limit blocks enter the two slide slots respectively. At this time, the movable cutter will be released and the protective shell can be moved laterally so that the protective shell can be pulled out from the shell. At this time, the two rectangular rods will be released and the rectangular rods on both sides of the fixed cutter can be pulled out from the shell. Subsequently, the staff can release the limit on the movable cutter through the set control component and then pull the movable cutter so that there is nothing blocking the top of the movable cutter. At this time, the U-shaped plate will be pulled out from the fixed plate and then the staff can pull the movable cutter upward.

[0007] In the above technical solution, further, the control component includes: 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.

[0008] In the technical solution, the motor can be powered on and started, and then 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, and 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 move, and the moving plate will drive the plug block to move, and then the plug block will drive the circular plate to move in the direction close to the fixed cutter; The staff can pull the pull rod upwards, so that the pull rod drives the insert block to move upwards. At this time, the second spring will be squeezed and contracted until one end of the insert block is completely pulled out of the circular plate, and then the movable cutter can be pulled.

[0009] In the above technical solution, further, 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 into the circular plate.

[0010] In this technical solution, under the action of the thread, it is ensured that the rotation of the threaded rod can drive the movable plate to move, the structural stability of the second spring is ensured, and one end of the insert block can be inserted into the circular plate.

[0011] In the above technical solution, further, the second bevel gear is meshed with the first bevel gear, one end of the second bevel gear is rotatably connected to the fixed block and the long plate, and the output shaft of the motor is rotatably connected to the connecting plate and the fixed block.

[0012] In the technical solution, under the action of meshing, it is ensured that the first bevel gear can drive the second bevel gear to rotate when rotating, ensuring that the second bevel gear can rotate normally and ensuring that the motor can rotate normally.

[0013] In the above technical solution, further, the bottom of the fixed plate contacts the top of the movable cutter, and the bottom of the long plate contacts the top of the movable cutter.

[0014] In this technical solution, it is ensured that the fixed plate can limit the movable cutter to prevent the movable cutter from moving upward, and it is ensured that the long plate can limit the movable cutter.

[0015] In the above technical solution, further, 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.

[0016] In this technical solution, it is ensured that one end of the limit block can be inserted into the housing and the rectangular rod, so that the limit block can be easily lifted upward by the staff by hand.

[0017] In the above technical solution, further, 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 plug-fitted with the movable cutter.

[0018] In this technical solution, the movable cutter will drive the convex block to slide in the sliding groove, thereby ensuring the stability of the displacement of the movable cutter.

[0019] In the above technical solution, further, the movable cutter is located on top of the fixed cutter.

[0020] In this technical solution, it is ensured that the movable cutter and the fixed cutter can be staggered and matched, so that the paper can be cut.

[0021] In the above technical solution, further, the rectangular rod is plug-fitted into the housing.

[0022] In this technical solution, it is ensured that the rectangular rod can be inserted into the housing.

[0023] In the above technical solution, further, the shell and the bottom plate are an integrally formed structure.

[0024] In this technical solution, the structural stability between the shell and the bottom plate is ensured.

[0025] The beneficial effects of the present invention are: 1. The cutter lock for self-locking the printer ensures that the movable cutter and the fixed cutter can be locked and disassembled through the cooperation between the convex block, the rectangular rod, the shell, the slide groove, the first spring, the limit block and the control component. The locking and disassembly method is relatively convenient, saving time and effort.

[0026] 2. The cutter lock for self-locking the printer ensures that the movable cutter can be more stable during the displacement process through the cooperation between the set fixed plate, U-shaped plate, sliding groove, convex block and long plate, so that the printed paper can be cut more neatly and deviation can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure inside the protective shell of the present invention; Figure 3 For the present invention Figure 2 The enlarged structural diagram at A in the middle; Figure 4 It is a schematic diagram of the structure of the fixed cutter and the rectangular rod in the present invention; Figure 5 For the present invention Figure 4The enlarged structural diagram at B in the middle; Figure 6 It is a schematic diagram of the structure inside the shell of the present invention; Figure 7 It is a schematic diagram of the structure inside the long board of the present invention; Figure 8 For the present invention Figure 7 The enlarged structural diagram at C in the middle; Fig. 9 It is a schematic diagram of the structure inside the fixed block, the long plate and the movable plate in the present invention; Fig.10 It is a structural schematic diagram of the bottom plate of the present invention.

[0028] The symbols in the figure are: 1. Bottom plate; 2. Shell; 3. Moving cutter; 4. Fixed cutter; 5. Opening; 6. Protective shell; 7. Convex block; 8. Slide groove; 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. Reciprocating plate; 26. Pull rod; 27. Limit groove; 28. First bevel gear; 29. ​​Cavity; 30. Second bevel gear. DETAILED DESCRIPTION

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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. Embodiment 1:

[0034] See also Figure 1 - Fig.10 As shown, this embodiment provides a cutter lock for printer self-locking, including a bottom plate 1, a housing 2 is installed on the top of the bottom plate 1, and also includes: A sliding groove 13 is provided on the bottom plate 1, a convex block 7 is slidably installed in the sliding groove 13, an opening 5 is provided on the bottom plate 1, a movable cutter 3 is plugged and installed on the convex block 7 and located on one side of the opening 5, a U-shaped plate 15 is fixedly installed on the movable cutter 3, and a fixed plate 14 fixed to the inner wall of the housing 2 is plugged and installed in the U-shaped plate 15; A control component is located in the housing 2 and is used to drive the movable cutter 3 to move back and forth and to limit the movable cutter 3; A protective shell 6 is plugged and installed on the outer shell 2. Two slide grooves 8 are provided in the outer shell 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 located in the outer shell 2. A through groove 12 is provided on the rectangular rod 11. A limit block 9 is slidably installed in the slide groove 8. One end of the limit block 9 passes through the top of the outer shell 2 and extends into the through groove 12. A first spring 10 tightly welded to the inner wall of the slide groove 8 is fixedly installed on the top of the limit block 9.

[0035] When in use, the printed label can be moved to the outside through the opening 5. When the label needs to be cut, the control component is set to drive the mobile cutter 3 to move in 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 mobile cutter 3 until the mobile cutter 3 and the fixed cutter 4 cooperate to cut the label; When it is necessary to disassemble the mobile 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 pulled out from the through slot 12 and the shell 2. At this time, the first spring 10 will shrink due to the squeezing of the limit block 9 until the two limit blocks 9 enter the two slide slots 8 respectively. At this time, the mobile cutter 3 will be released, and then the protective shell 6 can be moved laterally so that the protective shell 6 can be pulled out from the shell 2. At this time, the two rectangular rods 11 will be released, and then the rectangular rods 11 on both sides of the fixed cutter 4 can be pulled out from the shell 2. Subsequently, the staff can release the limit on the mobile cutter 3 through the set control component, and then can pull the mobile cutter 3 so that there is nothing blocking the top of the mobile cutter 3. At this time, the U-shaped plate 15 will be pulled out from the fixed plate 14, and then the staff can pull the mobile cutter 3 upward. Embodiment 2:

[0036] This embodiment provides a cutter lock for printer self-locking, which, in addition to the technical solutions of the above embodiments, also has the following technical features, and the control component includes: A fixed block 17, the fixed block 17 is fixedly installed in the housing 2, a long plate 18 is fixedly installed on one side of the fixed block 17, a limiting groove 27 is provided in the long plate 18, a threaded rod 21 is rotatably installed in the limiting groove 27, and a movable plate 16 is slidably installed in the limiting groove 27 and on the threaded rod 21; A groove 22 is provided in the movable plate 16, an insert block 24 is slidably installed in the groove 22, a circular plate 25 is fixedly installed on the top of the movable cutter 3, one end of the insert block 24 extends into the circular plate 25, a pull rod 26 is fixedly installed on the top of the insert block 24, one end of the pull rod 26 passes through the top of the groove 22 and extends to the outside, and a second spring 23 is sleeved on the pull rod 26 and located in the groove 22; Cavity 29, 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, an output end of the motor 20 passes through the connecting plate 19 and the fixed block 17 to extend 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 to extend into the limiting groove 27 and is coaxially connected to the threaded rod 21.

[0037] The motor 20 can be powered on and started, and then the output shaft of the motor 20 will drive the first bevel gear 28 to rotate. Under the action of meshing, the first bevel gear 28 will drive the second bevel gear 30 to rotate, and 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 move, and the moving plate 16 will drive the plug block 24 to move, and then the plug block 24 will drive the circular plate 25 to move in the direction close to the fixed cutter 4; The staff can pull the pull rod 26 upwards, so that the pull rod 26 drives the insert block 24 to move upwards. At this time, the second spring 23 will be squeezed and contracted until one end of the insert block 24 is completely pulled out of the circular plate 25, and then the movable cutter 3 can be pulled. Embodiment 3:

[0038] The present 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 movable 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 block 24 and the inner wall of the groove 22, and one end of the plug block 24 is plugged into the circular plate 25.

[0039] The thread ensures that the rotation of the threaded rod 21 can drive the movable plate 16 to move, thereby ensuring the structural stability of the second spring 23 and ensuring that one end of the insert block 24 can be inserted into the circular plate 25 . Embodiment 4:

[0040] The present embodiment provides a cutter lock for printer self-locking. In addition to the technical solutions of the above-mentioned embodiments, it also has the following technical features: the second bevel gear 30 is meshed 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, and the output shaft of the motor 20 is rotatably connected to the connecting plate 19 and the fixed block 17.

[0041] Wherein, under the effect of meshing, it is ensured that when the first bevel gear 28 rotates, it can drive the second bevel gear 30 to rotate, so that the second bevel gear 30 can rotate normally and the motor 20 can rotate normally. Embodiment 5:

[0042] 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 fixed plate 14 contacts the top of the movable cutter 3, and the bottom of the long plate 18 contacts the top of the movable cutter 3.

[0043] Among them, it is ensured that the fixed plate 14 can limit the movable cutter 3 to prevent the movable cutter 3 from moving upward, and it is ensured that the long plate 18 can limit the movable cutter 3. Embodiment 6:

[0044] 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 limit block 9 is plugged into the housing 2 and the rectangular rod 11, and the limit block 9 is an L-shaped structure.

[0045] Here, it is ensured that one end of the limit block 9 can be inserted into the housing 2 and the rectangular rod 11, so that the limit block 9 can be easily lifted upward by the staff by hand. Embodiment 7:

[0046] The present embodiment provides a cutter lock for printer self-locking. In addition to the technical solutions of the above-mentioned embodiments, it also has the following technical features: a sliding groove 13 is provided in the bottom plate 1 and at the bottom of the movable cutter 3. A convex block 7 is slidably installed in the sliding groove 13. One end of the convex block 7 extends into the movable cutter 3, and one end of the convex block 7 is plugged into and matched with the movable cutter 3.

[0047] The movable cutter 3 will drive the convex block 7 to slide in the sliding groove 13 , thereby ensuring the stability of the displacement of the movable cutter 3 . Embodiment 8:

[0048] 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 movable cutter 3 is located on top of the fixed cutter 4.

[0049] The movable cutter 3 and the fixed cutter 4 are ensured to be staggered and matched, so that the paper can be cut. Embodiment 9:

[0050] 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 plugged into the housing 2.

[0051] Here, it is ensured that the rectangular rod 11 can be inserted into the housing 2 . Embodiment 10:

[0052] 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 housing 2 and the bottom plate 1 are an integrally formed structure.

[0053] The structural stability between the housing 2 and the base plate 1 is ensured.

[0054] Working principle: When in use, the printed label can move to the outside through the opening 5. When the printed paper needs to be cut, the motor 20 can be powered on and started. Then, the output shaft of the motor 20 will drive the first bevel gear 28 to rotate. Under the action of meshing, the first bevel gear 28 will drive the second bevel gear 30 to rotate, and 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 move, and the moving plate 16 will drive the plug block 24 to move. Then the plug block 24 will drive the circular plate 25 to move in the direction close to the fixed cutter 4. At this time, the mobile cutter 3 will also move in 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 mobile cutter 3 will drive the convex block 7 to slide in the sliding groove 13 to ensure the stability of the displacement of the mobile cutter 3 until the mobile cutter 3 and the fixed cutter 4 cooperate to cut the printed paper. When the movable 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 pulled out from the through slot 12 and the shell 2. At this time, the first spring 10 will be squeezed by the limit block 9 and will shrink until the two limit blocks 9 enter the two slide slots 8 respectively. At this time, the movable cutter 3 will be released, and then the protective shell 6 can be moved horizontally so that the protective shell 6 is pulled out from the shell 2. At this time, the two rectangular rods 11 will be released, and then the rectangular rods 11 on both sides of the fixed cutter 4 can be pulled out. The rod 11 can be pulled out from the shell 2, and then the staff can pull the pull rod 26 upwards, so that the pull rod 26 drives the plug block 24 to move upwards. At this time, the second spring 23 will be squeezed and will shrink until one end of the plug block 24 is completely pulled out from the circular plate 25. Then the movable 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 movable cutter 3. At this time, the U-shaped plate 15 will be pulled out from the fixed plate 14, and then the staff can pull the movable cutter 3 upwards to remove the movable cutter 3 from the convex block 7.

[0055] 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 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 shell.

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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