A cutter fixing frame, cutter assembly and printer

Abstract

The utility model discloses a cutting knife fixing frame, cutting knife assembly and printer relates to printer technical field. The utility model discloses a cutting knife fixing frame, including the knife rest, be provided with cutting knife on the knife rest, still be provided with the first spring on the knife rest, the first end of first spring is connected with the knife rest, and the second end of first spring is located between the knife rest and cutting knife, and the abutting wall of first spring is located outside the knife rest. The utility model discloses a cutting knife fixing frame, and the second end of first spring is limited through the knife rest and cutting knife, need not set up the additional limiting block on the knife rest and limit the second end of first spring, thereby can simplify the knife rest structure, reduce production and processing difficulty, also can avoid the problem of the reduced problem of the strength of the knife rest due to the setting of the limiting block and the increase of the draw -hole.

Description

Technical Field

[0001] This utility model relates to the field of printer technology, and in particular to a cutter holder, a cutter assembly, and a printer. Background Technology

[0002] Label printers include tag printers and wire marking printers. After printing, tag printers and wire marking printers need to cut the labels or sleeves. Therefore, tag printers and wire marking printers usually have a cutting assembly for partially or fully cutting the labels or sleeves.

[0003] The cutting assembly in related technologies includes a blade holder and a cutter mounted on the blade holder. A spring is also provided on the blade holder. During the retraction process after the cutter completes its cutting action, the spring can push against a medium such as a label or sleeve, allowing the cutter to separate from the medium. In this related technology, one end of the spring is fixed to the blade holder, and the other end is limited by a limiting block provided on the blade holder. However, providing a limiting block on the blade holder not only complicates the blade holder structure and makes manufacturing difficult, but also affects the strength of the blade holder. Utility Model Content

[0004] This utility model discloses a cutter holder, a cutter assembly, and a printer to solve the technical problem in related technologies where setting a limiting block on the cutter holder not only leads to a complex cutter holder structure and inconvenience in production and processing, but also affects the strength of the cutter holder.

[0005] To solve the above problems, the present invention adopts the following technical solution: The first aspect of this utility model provides a cutter holder.

[0006] The present invention relates to a cutter holder, which includes a cutter holder on which a cutter is mounted. A first spring is also provided on the cutter holder. The first end of the first spring is connected to the cutter holder, and the second end of the first spring is located between the cutter holder and the cutter. The abutment wall of the first spring is located outside the cutter holder.

[0007] According to an optional embodiment, the blade holder has a first side and a second side, the cutter is located on the first side, and a first positioning shaft is provided on the second side; a first end of the first spring is nested on the first positioning shaft, and a second end of the first spring is located on the first side.

[0008] According to an optional embodiment, a groove is provided on the first side for receiving the second end of the first spring; and / or, a first limiting block is provided on the second side for limiting the first end of the first spring.

[0009] According to an alternative embodiment, the second end of the first spring forms a bent portion, the bent portion being perpendicular to the surface of the cutter, and the bent portion abutting against the cutter.

[0010] According to an alternative embodiment, after the first end of the first spring is wound at the first positioning shaft, it extends from the upper surface of the first spring to the second end of the first spring; or, after the first end of the first spring is wound at the first positioning shaft, it extends from the lower surface of the first spring to the second end of the first spring.

[0011] According to an optional embodiment, the blade holder is further provided with a second spring, the first end of the second spring being connected to the blade holder and the cutter, the second end of the second spring and the second end of the first spring being located on both sides of the cutter, and the abutment wall of the second spring being located outside the blade holder.

[0012] According to an optional embodiment, there is a second positioning shaft on the first side, and the first end of the second spring is nested on the second positioning shaft; after the first end of the second spring is wound at the second positioning shaft, it extends from the upper or lower surface of the second spring to the second end of the second spring, and the second end of the second spring abuts against the cutter.

[0013] According to an optional embodiment, the first side has a second limiting block and a third limiting block, wherein the second limiting block is used to limit the first end of the second spring, and the third limiting block is used to limit the second end of the second spring.

[0014] A second aspect of this invention provides a cutting tool assembly.

[0015] The cutting assembly of this utility model includes the cutting fixture described in any one of the technical solutions of this utility model.

[0016] A third aspect of this invention provides a printer.

[0017] The printer of this utility model includes the cutter assembly described in any of the technical solutions of this utility model.

[0018] The technical solution adopted in this utility model can achieve the following beneficial effects: The cutting blade holder of this invention has a first spring whose first end is connected to the blade holder, and a second end of the first spring located between the blade holder and the cutting blade. This allows the second end of the first spring to be limited by the blade holder and the cutting blade, preventing it from detaching from the blade holder. This invention eliminates the need for an additional limiting block on the blade holder to limit the second end of the first spring, simplifying the blade holder structure, reducing manufacturing difficulty, and avoiding the problem of reduced blade holder strength caused by the addition of draft holes due to limiting blocks. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the printer according to an embodiment of this application; Figure 2 yes Figure 1 Enlarged view of section A; Figure 3 This is a first schematic diagram of the cutter holder according to an embodiment of this application; Figure 4 This is a second schematic diagram of the cutter holder according to an embodiment of this application; Figure 5 This is a third schematic diagram of the cutter holder according to an embodiment of this application; Figure 6 yes Figure 5 Enlarged view of section B; Figure 7 This is an exploded view of the cutter holder according to an embodiment of this application; Figure 8 This is a first schematic diagram of the tool holder according to an embodiment of this application; Figure 9 This is a second schematic diagram of the tool holder according to an embodiment of this application; Figure 10 This is a third schematic diagram of the tool holder according to an embodiment of this application; Figure 11 This is a schematic diagram of the first spring in an embodiment of this application; Figure 12 This is a schematic diagram of the second spring in an embodiment of this application.

[0021] In the diagram: 100, knife holder; 110, knife holder; 111, first side; 112, second side; 113, first positioning shaft; 114, groove; 115, first limiting block; 116, second positioning shaft; 117, second limiting block; 118, third limiting block; 119, knife cavity; 120, knife; 121, second mounting hole; 122, notch; 130, first spring; 131, first fixed end; 132, first abutting end; 1321, bent part; 133, first abutting wall; 140, second spring; 141, second fixed end; 142, second abutting end; 143, second abutting wall; 200, cutting board. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0024] The cutting assembly in related technologies includes a cutter holder and a cutter mounted on the holder, with a spring also installed on the holder. On one hand, the spring in these technologies is open on its mounting side, posing a risk of detachment. To address this, a limiting block is installed on the holder to restrict the spring and prevent it from falling out. On the other hand, the cutter holder is typically an injection-molded plastic support. Installing a limiting block on the holder necessitates the installation of draft holes for demolding after injection molding. Therefore, installing a limiting block on the holder not only complicates the structure but also affects its strength.

[0025] To address this, this application provides a cutter holder. In this application, the second end of the first spring is positioned between the cutter holder and the cutter. The cutter holder and the cutter limit the second end of the first spring, eliminating the need for additional limiting blocks on the cutter holder to limit the second end of the first spring. This simplifies the cutter holder structure, reduces manufacturing difficulty, and avoids the problem of reduced cutter holder strength caused by the addition of draft holes due to the setting of limiting blocks.

[0026] The following is in conjunction with the appendix Figures 1 to 12 The present application provides a detailed description of the cutter holder, cutter assembly, and printer through specific embodiments and application scenarios.

[0027] This embodiment provides a cutter holder 100. The cutter holder 100 of this embodiment can be used in a printer. For example, the printer is a wire marking machine. Figure 1 As shown, the printer includes a housing, a mechanism housed within the housing, and a cutter holder 100 detachably mounted on the mechanism. The cutter holder 100 is used to cut media. In this embodiment, the media includes PVC tubing, heat shrink tubing, self-adhesive labels, etc.

[0028] The cutter holder 100 in this embodiment includes a cutter holder 110, such as... Figures 3-5 , Figure 7 As shown. For example, the tool holder 110 is a plastic support, formed as a single piece through injection molding. The tool holder 110 serves as a load-bearing component. A cutting blade 120 is mounted on the tool holder 110, as... Figure 4 , Figure 5 and Figure 7 As shown. The cutter 120 is used to perform a cutting action on the medium.

[0029] In this embodiment, the tool holder 110 is also provided with a first spring 130, such as Figure 3 As shown. For example, the first spring 130 can be located on the upstream side or the downstream side of the cutter 120. The upstream and downstream sides of the cutter 120 are relative to the material feeding direction; the side closer to the material feeding direction is the upstream side, and the side closer to the material discharging direction is the downstream side. Figures 3-5 A schematic diagram is shown showing the first spring 130 located on the upstream side of the cutter 120.

[0030] In this embodiment, the first end of the first spring 130 is connected to the blade holder 110, the second end of the first spring 130 is located between the blade holder 110 and the cutter 120, and the abutment wall of the first spring 130 is located outside the blade holder 110. Figures 3-5 As shown. Figure 3As shown, the end of the first spring 130 near the upper side of the tool holder 110 is the first end of the first spring 130, and the end near the lower side of the tool holder 110 is the second end of the first spring 130. The portion between the first end and the second end is the abutment wall of the first spring 130. In the following description, the first end of the first spring 130 is simply referred to as the first fixed end 131, the second end of the first spring 130 is simply referred to as the first abutment end 132, and the abutment wall of the first spring 130 is simply referred to as the first abutment wall 133.

[0031] For example, the first fixed end 131 and the tool holder 110 may be snap-fitted or sleeved.

[0032] like Figure 5 and Figure 6 As shown, in this embodiment, the first abutting end 132 is located between the tool holder 110 and the cutter 120. The tool holder 110 and the cutter 120 can limit the first abutting end 132 to prevent it from falling off the tool holder 110. In this embodiment, the tool holder 110 and the cutter 120 limit the first abutting end 132, eliminating the need for additional limiting blocks on the tool holder 110. This simplifies the structure of the tool holder 110, reduces manufacturing difficulty, and avoids the problem of reduced strength of the tool holder 110 due to the addition of draft holes caused by limiting blocks.

[0033] In this embodiment, the first abutting wall 133 is located outside the blade holder 110, which allows the first abutting wall 133 to contact the medium before the blade 120 during the cutting process, thereby facilitating the cutting action of the blade 120 on the medium; at the same time, it also allows the first abutting wall 133 to separate from the medium after the blade 120 during the retraction process. When the blade 120 separates from the medium, the first abutting wall 133 can push against the medium to ensure the separation effect of the blade 120 from the medium.

[0034] In some embodiments, the tool holder 110 has a first side 111 and a second side 112, such as Figures 8-10 As shown. Figures 8-10 As shown, the first side 111 and the second side 112 are opposite to each other. The first side 111 has a cutting cavity 119 for mounting a cutting blade 120, as shown. Figure 9 and Figure 10 As shown. For example, the length of the cutting cavity 119 is the same as the length of the cutter 120, and the width of the cutting cavity 119 may be greater than, less than or equal to the width of the cutter 120. The cutter 120 is movably mounted in the cutting cavity 119 so that the cutter 120 can perform a cutting action on the medium.

[0035] In some embodiments, a first positioning shaft 113 is provided on the second side 112, such as... Figure 8As shown. The first fixed end 131 is nested on the first positioning shaft 113, while the first abutting end 132 is located on the first side surface 111, as shown. Figure 3 , Figure 5 and Figure 6 As shown. Figure 5 and Figure 6 As shown, the first fixed end 131 is located on the second side 112, the first abutting wall 133 spans across the blade holder 110, and the first abutting end 132 is located on the first side 111. Specifically, the first abutting end 132 is located between the blade holder 110 and the cutting blade 120.

[0036] In this embodiment, the first spring 130 is partially located on the second side 112 and partially located on the first side 111. However, it is not limited to this; the first spring 130 may also be entirely located on the first side 111.

[0037] In some embodiments, a first limiting block 115 is provided on the second side 112, such as... Figure 3 and Figure 8 As shown. The first limiting block 115 is used to limit the first fixed end 131, thereby further preventing the first spring 130 from falling off the tool holder 110. Exemplarily, there may be one or more first limiting blocks 115. The first limiting block 115 is disposed near the first fixed end 131. For example... Figure 3 and Figure 8 As shown, two first limiting blocks 115 are provided on the second side 112. The two first limiting blocks 115 are used to limit the first springs 130 on both sides of the first positioning shaft 113.

[0038] In some embodiments, a groove 114 is provided on the first side surface 111, such as... Figure 9 and Figure 10 As shown. The groove 114 is used to receive the first abutment end 132, as... Figure 5 and Figure 6 As shown. Figure 5 and Figure 6 As shown, the first abutting end 132 is engaged within the groove 114. For example, the depth of the groove 114 may be greater than the diameter of the wire used in the first spring 130. However, it is not limited to this; the depth of the groove 114 may also be less than or equal to the diameter of the wire used in the first spring 130.

[0039] In this embodiment, a groove 114 is provided on the first side surface 111. When the first abutting end 132 is located in the groove 114, not only will the overall thickness of the cutter holder 100 not increase, but the groove 114 can also further limit the first abutting end 132. Specifically, the groove 114 can limit the first abutting end 132 in the length direction of the cutter holder 110 (e.g., ...). Figure 5 (As shown) Limit.

[0040] In some embodiments, the first abutting end 132 forms a bent portion 1321, such as... Figure 11 As shown. The bent portion 1321 is perpendicular to the surface of the cutter 120, and the bent portion 1321 abuts against the cutter 120, as... Figure 3 , Figure 5 and Figure 6 As shown. Figure 3 , Figure 5 and Figure 6 As shown, the end of the first abutment end 132 is bent along the longitudinal direction to form a bent portion 1321. In this embodiment, the first abutment end 132 being bent along the longitudinal direction means that the end of the first abutment end 132 is along the thickness direction of the tool holder 110 (e.g., ...). Figure 5 (As shown) bend, so that the first abutment end 132 can provide more reliable abutment force to the cutter 120 to prevent the cutter 120 from tilting.

[0041] In some embodiments, the first fixed end 131, after being wound around the first positioning shaft 113, extends from the upper surface of the first spring 130 to the first abutting end 132, such as... Figure 3 and Figure 11 As shown. For example, the first spring 130 has more than one winding, and the first abutting end 132 extends from the upper surface of the winding area. Simultaneously, the first abutting end 132 also abuts against the side of the cutter 120. This allows a height difference to be formed between the two ends of the first abutting wall 133 in the thickness direction of the blade holder 110, such as... Figure 5 As shown. That is, the first abutting wall 133 gradually slopes toward the surface of the cutter 120 from the direction near the first fixed end 131 to the direction near the first abutting end 132.

[0042] In this embodiment, the first abutting wall 133 is inclined, which on the one hand can provide reliable abutting force to the cutter 120 and prevent the cutter 120 from tilting; on the other hand, when the first abutting wall 133 abuts against the medium, the first abutting wall 133 and the medium have a wider abutting surface in the thickness direction of the cutter holder 110, thereby enhancing the abutting effect of the first spring 130 on the medium.

[0043] Not limited to this, after the first fixed end 131 is wound around the first positioning shaft 113, it extends from the lower surface of the first spring 130 to the first abutting end 132. In this way, the two ends of the first abutting wall 133 will hardly form a height difference in the thickness direction of the blade holder 110, and the first abutting end 132 is less likely to interfere with the cutter 120 when assembling the first spring 130, making installation more convenient.

[0044] In this embodiment, the upper and lower surfaces of the first spring 130 are respectively: the side of the first spring 130 that is close to the surface of the tool holder 110 is the lower surface, and the side of the first spring 130 that is away from the surface of the tool holder 110 is the upper surface.

[0045] In some embodiments, a second spring 140 is also provided on the tool holder 110, such as... Figures 3-5 , Figure 7 As shown. For example, the second spring 140 may be located upstream of the cutter 120 or downstream of the cutter 120. Figures 1-4 A schematic diagram is shown showing the first spring 130 located downstream of the cutter 120.

[0046] In this embodiment, the first end of the second spring 140 is connected to the blade holder 110 and the cutter 120. The second end and the first abutting end 132 of the second spring 140 are located on both sides of the cutter 120, and the second abutting wall 143 of the second spring 140 is located outside the blade holder 110. Figures 3-6 As shown.

[0047] like Figure 3 As shown, the end of the second spring 140 near the upper side of the tool holder 110 is the first end of the second spring 140, and the end near the lower side of the tool holder 110 is the second end of the second spring 140. The portion between the first end and the second end is the abutment wall of the second spring 140. In the following description, the first end of the second spring 140 is simply referred to as the second fixed end 141, the second end of the second spring 140 is simply referred to as the second abutment end 142, and the abutment wall of the second spring 140 is simply referred to as the second abutment wall 143.

[0048] like Figure 3 and Figure 7 As shown, the blade holder 110 has a first mounting hole, and the cutter 120 has a second mounting hole 121. The second fixing end 141 is inserted into the first mounting hole and the second mounting hole 121, and the cutter 120 can be fixed to the blade holder 110 by the second spring 140. Figure 7 As shown, the cutter 120 has a notch 122 on the side away from the blade edge, and the notch 122 engages with a rotating pin on the mechanism. The engagement of the notch 122 and the rotating pin enables the cutter 120 to have an adaptive oscillation effect, making it easier for the cutter 120 to cut the medium.

[0049] In this embodiment, the second abutment end 142 and the first abutment end 132 are located on both sides of the cutter 120, and the first abutment wall 133 and the second abutment wall 143 are both located outside the cutter holder 110. When the cutter 120 completes the cutting action and retracts, the media upstream and downstream of the cutter 120 are pushed by the first spring 130 and the second spring 140, respectively. Compared with the prior art where only the media upstream of the cutter 120 is pushed, the separation effect between the media and the cutter 120 can be improved, thereby reducing the risk of jamming caused by the difficulty in separating the cutter 120 from the media.

[0050] On the other hand, in this embodiment, the second abutment end 142 and the first abutment end 132 are located on both sides of the cutter 120, which can adapt to printers with different material feeding directions. Specifically, when the material feeding direction changes, the media upstream and downstream of the cutter 120 can still be pushed by the first spring 130 and the second spring 140, thereby improving the separation effect between the media and the cutter 120. That is, in this embodiment, when the material feeding direction changes, the separation effect between the cutter 120 and the media is not significantly affected, making the cutter fixing bracket 100 of this embodiment applicable to different feeding scenarios.

[0051] In some embodiments, a second positioning shaft 116 is provided on the first side 111, such as... Figure 10 As shown. The second fixed end 141 is nested on the second positioning shaft 116, as... Figure 4 As shown. The second fixed end 141 is nested on the second positioning shaft 116, and at the same time, the second fixed end 141 is engaged with the second mounting hole 121, which can realize the positioning of the second spring 140.

[0052] In some embodiments, the second fixed end 141, after being wound around the second positioning shaft 116, extends from the upper surface of the second spring 140 to the second abutment end 142, such as... Figure 3 and Figure 12 As shown. For example, the second spring 140 has more than one winding, and the second abutting end 142 extends from the upper surface of the winding, while also abutting the side of the cutter 120. This allows the two ends of the second abutting wall 143 to be aligned in the thickness direction of the blade holder 110 (e.g., ...). Figure 5 As shown, a height difference is formed. That is, the second abutment wall 143 gradually slopes toward the surface of the cutter 120 from the direction near the second fixed end 141 to the direction near the second abutment end 142.

[0053] In this embodiment, the second abutment wall 143 is inclined, which on the one hand can provide reliable abutment force to the cutter 120 and prevent the cutter 120 from tilting; on the other hand, when the second abutment wall 143 abuts against the medium, the second abutment wall 143 and the medium have a wider abutment surface in the thickness direction of the cutter holder 110, thereby enhancing the abutment effect of the second spring 140 against the medium.

[0054] Not limited to this, after the second fixed end 141 is wound around the second positioning shaft 116, it is led out from the lower surface of the second spring 140 and extends to the second abutment end 142.

[0055] In this embodiment, the upper and lower surfaces of the second spring 140 are respectively: the side of the second spring 140 that is close to the surface of the tool holder 110 is the lower surface, and the side of the second spring 140 that is away from the surface of the tool holder 110 is the upper surface.

[0056] In some embodiments, the first side 111 has a second limiting block 117 and a third limiting block 118, such as... Figure 10 As shown. The second limiting block 117 is used to limit the second fixed end 141, and the third limiting block 118 is used to limit the second abutting end 142, as shown. Figure 4 As shown. The second limiting block 117 and the third limiting block 118 prevent the second spring 140 from falling off the tool holder 110.

[0057] This embodiment also provides a cutting knife assembly. The cutting knife assembly of this embodiment includes a cutting knife holder 100 according to any of the technical solutions in this embodiment. Not limited thereto, the cutting knife assembly may also include a cutting board 200 that cooperates with the cutting knife holder 100, such as... Figure 1 and Figure 2 As shown. The cutting board 200 can be a structure found in the prior art, which will not be described in detail here. The cutting knife assembly of this embodiment has a cutting knife holder 100 according to any of the technical solutions in this embodiment, which can simplify the structure of the knife holder 110, reduce the difficulty of production and processing, and also avoid the problem of reducing the strength of the knife holder 110 due to the addition of draft holes caused by the setting of the limiting block.

[0058] This embodiment also provides a printer. The printer of this embodiment includes a cutter assembly according to any of the technical solutions in this embodiment, such as... Figure 1 As shown. However, this is not limited to the printer itself; it also includes components such as the printing mechanism and casing. The printer of this embodiment has a cutting assembly according to any of the technical solutions in this embodiment, which simplifies the structure of the blade holder 110, reduces manufacturing difficulty, and avoids the problem of reduced strength of the blade holder 110 due to the addition of draft holes caused by the setting of the limiting block.

[0059] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0060] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.

Claims

1. A cutter holder, characterized in that, Includes a blade holder (110), on which a cutting blade (120) is mounted, and a first spring (130) is also provided on the blade holder (110). The first end of the first spring (130) is connected to the blade holder (110), and the second end of the first spring (130) is located between the blade holder (110) and the cutting blade (120). The abutment wall of the first spring (130) is located outside the blade holder (110).

2. The cutter holder according to claim 1, characterized in that, The blade holder (110) has a first side (111) and a second side (112), the cutter (120) is located on the first side (111), and a first positioning shaft (113) is provided on the second side (112). The first end of the first spring (130) is nested on the first positioning shaft (113), and the second end of the first spring (130) is located on the first side (111).

3. The cutter holder according to claim 2, characterized in that, The first side surface (111) is provided with a groove (114) for accommodating the second end of the first spring (130); And / or, a first limiting block (115) is provided on the second side (112), the first limiting block (115) being used to limit the first end of the first spring (130).

4. The cutter holder according to claim 2, characterized in that, The second end of the first spring (130) forms a bend (1321), which is perpendicular to the surface of the cutter (120) and abuts against the cutter (120).

5. The cutter holder according to claim 4, characterized in that, After the first end of the first spring (130) is wound around the first positioning shaft (113), it is led out from the upper surface of the first spring (130) and extends to the second end of the first spring (130); Alternatively, after the first end of the first spring (130) is wound around the first positioning shaft (113), it extends from the lower surface of the first spring (130) to the second end of the first spring (130).

6. The cutter holder according to any one of claims 2 to 5, characterized in that, The tool holder (110) is also provided with a second spring (140). The first end of the second spring (140) is connected to the knife holder (110) and the cutter (120). The second end of the second spring (140) and the second end of the first spring (130) are located on both sides of the cutter (120). The abutment wall of the second spring (140) is located outside the knife holder (110).

7. The cutter holder according to claim 6, characterized in that, The first side (111) has a second positioning shaft (116), and the first end of the second spring (140) is nested on the second positioning shaft (116); After the first end of the second spring (140) is wound around the second positioning shaft (116), it extends from the upper or lower surface of the second spring (140) to the second end of the second spring (140) and abuts against the cutter (120).

8. The cutter holder according to claim 6, characterized in that, The first side (111) has a second limiting block (117) and a third limiting block (118), wherein the second limiting block (117) is used to limit the first end of the second spring (140), and the third limiting block (118) is used to limit the second end of the second spring (140).

9. A cutting blade assembly, characterized in that, Includes the cutter holder according to any one of claims 1 to 8.

10. A printer, characterized in that, Includes the cutting assembly as described in claim 9.

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