Cutting tool

Abstract

The utility model relates to a cutting tool which comprises a shell and a tool body, a cavity for containing the tool body is formed in the shell, the bottom and / or the front side portion of the cavity are / is open, the tool body is installed in the cavity through a telescopic mechanism, and the tool body can selectively stretch out of or retract back into the cavity through the telescopic mechanism. A pressing plate assembly is installed on the cutter body and used for pressing a to-be-cut piece in the direction perpendicular to the surface of the to-be-cut piece during cutting. When the cutter is in an unused initial state, the cutter body is completely contracted in the shell, workers can be effectively prevented from being accidentally scratched by the cutter, operation safety is guaranteed, meanwhile, the pressing plate assembly is arranged, and before the cutter makes contact with a piece to be cut, the cutter body is pressed downwards through the pressing plate assembly, so that the cutter body is prevented from being damaged. Sufficient shearing force can be formed in the contact process of the cutting knife and the to-be-cut piece, and the cutting quality and the cutting efficiency are improved.

Description

Technical Field

[0001] The utility model relates to the field of cutting equipment technology, in particular to a cutting tool. Background Art

[0002] To ensure the overall sealing of EMU windows, sealant is often applied to the gap between the windows and the train body after installation. To protect the train body and windows from contamination, plastic-based tape is used to secure the edges of the train body and windows before applying the sealant.

[0003] At present, the application of sealant to protect the gaps between car windows and car bodies is mostly done manually, that is, workers use plastic-based tape to stick along the edges of the gaps between the car windows and the car body near the gaps. When protecting the rounded corners between the car windows and the car body, workers need to use plastic-based tape to continuously tangent the rounded corners to complete the protection of the rounded corners.

[0004] Currently, this purely manual process places high demands on the workers, and the quality of the applied protection is highly dependent on their experience, making it difficult to guarantee the quality of the protection. Furthermore, even experienced workers can take upwards of 10 minutes to apply protection to a single window, making it inefficient.

[0005] To improve the efficiency of applying sealant, the current solution is to apply tape over the gap, then cut the tape with a knife to expose the gap before applying sealant. However, the existing method of cutting tape is still manual with a cutting blade, which is not only unsafe and can easily injure the operator, but also affects cutting quality and efficiency due to inconsistent tape tightness when applying. Utility Model Content

[0006] The main technical problem solved by the utility model is to provide a cutting tool which can improve the safety of the tool and improve the cutting quality and cutting efficiency.

[0007] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0008] A cutting tool comprises a shell and a blade body, wherein the shell has a cavity for accommodating the blade body, the bottom and / or front side of the cavity are open, the blade body is installed in the cavity via a telescopic mechanism, and the blade body can be selectively extended or retracted from the cavity via the telescopic mechanism, and a pressure plate assembly is installed on the blade body, and the pressure plate assembly is used to press the workpiece to be cut in a direction perpendicular to the surface of the workpiece to be cut during cutting.

[0009] Furthermore, the telescopic mechanism includes an operating part and a limiting part. The operating part is connected to the blade body and is configured to be manually operated and movable up and down relative to the shell. The limiting part is configured to limit the blade body to a retracted initial state or an extended use state.

[0010] Furthermore, the operating portion is a push handle extending vertically from the side of the blade body, and a slide groove extending in a vertical direction is provided on the side wall of the shell. The push handle extends to the outside of the shell through the slide groove, and the push handle slides along the slide groove.

[0011] Furthermore, the limiting part includes an upward limiting part, a downward limiting part and a stop handle extending perpendicularly to the blade body. The upward limiting part and the downward limiting part can be pulled out and installed on the side of the shell. When pulled out, they are disengaged from the stop handle to enable the blade to move freely up and down. When retracted, they cooperate with the stop handle to limit the blade body to a retracted initial state or an extended use state.

[0012] Furthermore, the upward limiting part includes an upward pull rod and an upward pull spring, and the upward pull spring is sleeved on the upward pull rod. The downward limiting part includes a downward pull rod and a downward pull spring, and the downward pull spring is sleeved on the downward pull rod. The upward pull spring and the downward pull spring respectively drive the upward pull rod and the downward pull rod to reset from the pulled-out position to the retracted position.

[0013] Furthermore, the upward pull-out rod includes a first upward pull-out rod and a second upward pull-out rod, and the first upward pull-out rod and the second upward pull-out rod are connected by a first torsion spring. The downward pull-out rod includes a first downward pull-out rod and a second downward pull-out rod, and the first downward pull-out rod and the second downward pull-out rod are connected by a second torsion spring. The first upward pull-out rod and the first downward pull-out rod are respectively installed through the shell, and the second upward pull-out rod and the second downward pull-out rod can be flipped in the vertical direction relative to the first upward pull-out rod and the first downward pull-out rod respectively.

[0014] Furthermore, an upward limit baffle is provided on the side wall of the cavity corresponding to the upward pull rod, and the free end of the upward pull rod is lowered and rests on the bottom of the upward limit baffle to achieve vertical limitation. A downward limit baffle is provided on the side wall of the cavity corresponding to the downward pull rod, and the free end of the downward pull rod is lowered and rests on the top of the downward limit baffle to achieve vertical limitation.

[0015] Furthermore, the upward limiting portion, the downward limiting portion and the operating portion are mounted on the same side wall of the housing, and the blocking handle and the operating portion are mounted perpendicularly to each other on the blade body in a horizontal direction.

[0016] Furthermore, the telescopic mechanism also includes a spring installed above the blade body and between the top wall of the cavity. The spring undergoes elastic deformation in the initial state and the use state, and the spring elastically drives the blade body to exceed the limit position of the initial state or the use state.

[0017] Furthermore, the knife body includes a base, a cutting knife and a connecting rod. The base has a rectangular structure. The base is gap-fitted with the inner wall of the cavity and slides along the inner wall of the cavity. The cutting knife is arranged on the front side of the base and extends in the vertical direction of the base. The telescopic mechanism is connected to the connecting rod.

[0018] Furthermore, the pressing plate assembly includes two pressing plates, which extend horizontally outward from the front side of the knife body. The pressing plates have a pressing surface, which fits the surface of the workpiece to be cut during cutting.

[0019] In summary, the cutting tool provided by the present invention has the following advantages compared with the prior art:

[0020] (1) The utility model installs the knife body in the shell through a telescopic mechanism. When the knife is in the initial state of not being used, the knife body will be completely retracted into the shell. Only when it is in use can the knife body be extended from the shell to perform normal cutting work, which can effectively prevent the knife from accidentally scratching the worker and ensure the safety of the operation.

[0021] (2) The utility model is particularly suitable for cutting flexible, thin sheet or strip cutting parts, such as tapes, etc. By setting a pressure plate assembly, before the cutter contacts the tape waiting to be cut, the pressure plate assembly is used to press the tape waiting to be cut downward, stretching the tape waiting to be cut and giving it greater tension. This is beneficial in the cutting process, and is conducive to forming sufficient shear force during the contact process between the cutter blade and the tape waiting to be cut, so as to better cut the tape, improve cutting efficiency, and improve cutting quality. The tape waiting to be cut will not be damaged during the cutting process.

[0022] The specific implementation of the present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are part of this utility model and are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. Obviously, the drawings described below are only some embodiments. For those of ordinary skill in the art, other drawings can be derived from these drawings without inventive effort.

[0024] In the attached figure:

[0025] Figure 1 This is a schematic diagram of the structure of the tool of the utility model in its initial state;

[0026] Figure 2 yes Figure 1 lateral view of;

[0027] Figure 3 yes Figure 2 AA section view;

[0028] Figure 4 This is a schematic diagram of the structure of the cutter body of the utility model;

[0029] Figure 5 This is a schematic diagram of the structure of the tool of the utility model when it is in use;

[0030] Figure 6 yes Figure 5 lateral view of;

[0031] Figure 7 yes Figure 6 BB cross-sectional view.

[0032] In the picture:

[0033] Housing 1, chute 11, cutter body 2, base 21, connecting rod 23, cutter 22, connecting end 24, cavity 3, pressure plate assembly 4, pressure plate 41, fixing frame 42;

[0034] Spring 5, operating part 6, push handle 61;

[0035] Limiting part 7, upward limiting part 71, upward pull rod 711, first upward pull rod 7111, second upward pull rod 7112, first torsion spring 7113, upward pull spring 712, downward limiting part 72, downward pull rod 721, first downward pull rod 7211, second downward pull rod 7212, second torsion spring 7213, downward pull spring 722, blocking handle 73, upward limiting baffle 74, downward limiting baffle 75.

[0036] It should be noted that the drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0038] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0039] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; and direct connections or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0040] like Figures 1 to 4 As shown, this embodiment provides a cutting tool, which is mainly used for cutting flexible, thin sheet or strip materials, such as tapes, etc. The following is a detailed description taking cutting tapes as an example.

[0041] The cutting tool provided in this embodiment includes a housing 1 and a blade body 2. The housing 1 has a cavity 3 for accommodating the blade body 2. The blade body 2 is positioned within the cavity 3 and is slidably mounted within the cavity 3 of the housing 1 via a telescopic mechanism (not shown). This mechanism allows the blade body 2 to selectively extend or retract from the cavity 3. A pressure plate assembly 4 is also mounted on the blade body 2. The pressure plate assembly 4 is used to compress the tape perpendicularly to the tape during cutting. In this embodiment, the bottom and front sides of the cavity 3 are open. The blade body 2 extends from the bottom opening, and the pressure plate assembly 4 extends forward from the front side opening of the housing 1 to compress the tape.

[0042] In this embodiment, the blade body 2 is vertically slidably mounted within the cavity 3 of the housing 1 via a telescopic mechanism. This allows the blade body 2 to extend and retract within the housing 1. When in use, the blade body 2 can extend downward from the housing 1 to complete the cutting operation. When not in use, the blade body 2 can be fully retracted into the housing 1. This not only protects the blade body 2 but also effectively prevents the blade body 2 from accidentally injuring the operator, thereby increasing the safety of the blade storage and operation. Furthermore, before the cutting blade 22 of the blade body 2 contacts the tape, the pressure plate assembly 4 vertically compresses the tape downward, stretching it and imparting greater tension to the tape. This facilitates the generation of a stable shear force during contact between the cutting blade 22 of the blade body 2 and the tape, ensuring better tape cutting and ensuring cutting quality. Furthermore, it provides a certain amount of support for the operator, making it easier for the operator to move the blade to cut the tape.

[0043] like Figure 4 As shown, in this embodiment, the shell 1 is a rectangular parallelepiped structure as a whole, and the shape of the cavity 3 is also a rectangular parallelepiped. The blade 2 includes a base 21, a cutting knife 22, and a connecting rod 23. The base 21 is a rectangular parallelepiped structure. The three side surfaces of the base 21 are clearance-matched with the three inner walls that enclose the cavity 3, so that the base 21 slides along the inner wall of the cavity 3, thereby ensuring that the blade 2 does not deflect when moving up and down. The connecting rod 23 is vertically installed above the base 21, and a connecting end 24 is also provided at the top of the connecting rod 23. The connecting rod 23 is movably connected to the shell 1 through the connecting end 24. The telescopic mechanism is connected to the connecting rod 23. The setting of the connecting rod 23 provides sufficient installation space for the installation of the telescopic mechanism in the cavity 3, which is conducive to reducing the volume of the shell 1 and facilitating movement and carrying.

[0044] In this embodiment, the cutting blade 22 is preferably disposed on the front side of the base 21 (i.e., toward the front opening of the cavity 3), and extends outward from the front side of the base 21. The cutting blade 22 is preferably integrally formed with the base 21. The cutting blade 22 (i.e., the blade of the cutting blade 22) extends in a vertical direction. More preferably, the height of the cutting blade 22 is the same as that of the base 21, and the cutting blade 22 extends from the bottom to the top of the base 21.

[0045] like Figures 1 to 4 As shown, in this embodiment, preferably, the telescopic mechanism includes an operating portion 6 and a limiting portion 7, wherein the operating portion 6 is connected to the blade body 2 and is configured to be operable and movable up and down relative to the housing 1. More preferably, the operating portion 6 is manually operated and moved up and down along the housing 1. Manually moving the operating portion 6 up and down can drive the blade body 2 to move up and down to achieve the transition between the initial state and the use state. This makes the tool structure simple, low-cost, and easy to carry. The limiting portion 7 is configured to limit the blade body 2 to a retracted initial state or an extended use state, ensuring that the blade body 2 does not extend out of the housing 1 in the initial state, ensuring the safety of the operator, and does not retract into the housing 1 in the use state, thereby affecting the cutting quality and efficiency.

[0046] In this embodiment, it is further preferred that the operating portion 6 is a push handle 61 extending vertically from the side of the blade body 2. A corresponding slide groove 11 extending in the vertical direction is provided on one side wall of the housing 1. The push handle 61 extends through the slide groove 11 to the outside of the housing 1. The operator can grasp the push handle 61 and drive it to move up and down within the slide groove 11, thereby driving the blade body 2 to move up and down. The slide groove 11 limits the maximum stroke of the push handle 61. The operator manually pushes the push handle 61 downward or upward to achieve the steps of cutting the tape downward and retracting the blade body 2. The operating portion 6 has a simple structure and is easy to operate, making it more convenient for the operator to move the tool according to cutting needs.

[0047] In this embodiment, it is further preferred that the limiting portion 7 includes an upward limiting portion 71, a downward limiting portion 72, and a stop handle 73 extending perpendicularly from the blade body 2. The upward limiting portion 71 and the downward limiting portion 72 can be retracted and installed on the side of the housing 1 and have an extended portion extending from the housing 1 for operation. When pulled out, they disengage from the stop handle 73, achieving the separation of the blade body 2 from the limiting portion 7, allowing the blade body 2 to move freely up and down. When retracted, they cooperate with the stop handle 73 to limit the blade body 2 to an initial state position or a use state position. The upward limiting portion 71 and the downward limiting portion 72 are retractably installed on the housing 1, making operation more convenient and quick for the operator, improving cutting efficiency, and also making the structure of the tool simple and compact, low-cost, and easy to carry.

[0048] In this embodiment, it is further preferred that the upward limiter 71, the downward limiter 72, and the push handle 61 are mounted on the same side wall of the housing 1, with the downward limiter 72 positioned above the upward limiter 71 to facilitate operation by the operator. Furthermore, in this embodiment, the stop handle 73 and the push handle 61 are mounted horizontally and perpendicularly to each other on the blade body 2. Specifically, one end of each of the stop handle 73 and the push handle 61 is fixedly connected to the connecting rod 23, and the stop handle 73 is completely positioned within the cavity 3 and faces the rear wall of the cavity 3.

[0049] In this embodiment, the upward limiting portion 71 preferably includes an upward withdrawal rod 711 and an upward withdrawal spring 712. The upward withdrawal spring 712 is mounted on the upward withdrawal rod 711. Specifically, the upward withdrawal spring 712 is mounted on the upward withdrawal rod 711 located outside the housing 1. The downward limiting portion 72 includes a downward withdrawal rod 721 and a downward withdrawal spring 722. The downward withdrawal spring 722 is mounted on the downward withdrawal rod 721. Specifically, the downward withdrawal spring 722 is mounted on the downward withdrawal rod 721 located outside the housing 1. The upward withdrawal rod 711 and the downward withdrawal rod 721 are preferably installed parallel to the push handle 61 (i.e., horizontally). Two through-holes (not shown) are respectively formed on the side of the housing 1. The upward withdrawal rod 711 and the downward withdrawal rod 721 respectively pass through the corresponding through-holes and can slide horizontally relative to the through-holes to achieve withdrawal. One end of the upward pull spring 712 and the downward pull spring 722 are connected to the ends of the upward pull rod 711 and the downward pull rod 721, respectively, and the other end is fixedly connected to the outer surface of the housing 1. The upward pull spring 712 and the downward pull spring 722 respectively drive the upward pull rod 711 and the downward pull rod 721 to return from the extended position to the retracted position. In the retracted position, the stop handle 73 cooperates with the free end of the upward pull rod 711 or the free end of the downward pull rod 721 to achieve an upward limit or a downward limit, thereby restricting the blade body 2 to the retracted initial state or the extended use state.

[0050] When the state of the blade body 2 needs to be adjusted, the operator pulls out the upward pull rod 711 or the downward pull rod 721. At this time, the upward pull spring 712 or the downward pull spring 722 is stretched, and the upward pull rod 711 or the downward pull rod 721 is disengaged from the stop handle 73, and the blade body 2 is free from the restriction and can move freely. After the blade body 2 moves, the upward pull rod 711 or the downward pull rod 721 is released. Under the elastic action of the upward pull spring 712 or the downward pull spring 722, the upward pull rod 711 or the downward pull rod 721 automatically returns to the initial retracted position.

[0051] In this embodiment, it is further preferred that the upward pull rod 711 includes a first upward pull rod 7111 and a second upward pull rod 7112, and the first upward pull rod 7111 and the second upward pull rod 7112 are connected by a first torsion spring 7113. The first upward pull rod 7111 is installed through the housing 1, the upward pull spring 712 is mounted on the first upward pull rod 7111, and the second upward pull rod 7112 is placed inside the cavity 3, and the second upward pull rod 7112 cooperates with the stop handle 73. Figure 3 and Figure 7 As shown, the first upward pulling rod 7111 and the second upward pulling rod 7112 are in a horizontal state as a whole under the action of the first torsion spring 7113 in the natural state, and the second upward pulling rod 7112 can be flipped up and down relative to the first upward pulling rod 7111 under the action of external force.

[0052] The downward pull rod 721 includes a first downward pull rod 7211 and a second downward pull rod 7212, which are connected by a second torsion spring 7213. The first downward pull rod 7211 is installed through the housing 1, and the downward pull spring 722 is mounted on the first downward pull rod 7211. The second downward pull rod 7212 is placed inside the cavity 3, and the free end of the second downward pull rod 7212 is engaged with the stop handle 73. Figure 3 and Figure 7 As shown, the first downward pulling rod 7211 and the second downward pulling rod 7212 are in a horizontal state as a whole under the action of the second torsion spring 7213 in the natural state, and the second downward pulling rod 7212 can be flipped up and down relative to the first downward pulling rod 7211 under the action of external force.

[0053] When the blade body 2 needs to be moved downward and extended, the operator pulls out the downward pulling rod 721 to release the blocking handle 73 from the restriction of the downward pulling rod 721. When the operator pushes the push handle 61 downward to make the blade body 2 continue to move downward to the second upward pulling rod 7112, under the action of the blocking handle 73, the second upward pulling rod 7112 is pushed and flipped downward until the blocking handle 73 passes over the second upward pulling rod 7112 to the bottom of the second upward pulling rod 7112. At this time, under the action of the first torsion spring 7113, the second upward pulling rod 7112 automatically flips upward and returns to a horizontal state.

[0054] When the blade body 2 needs to move upward, the operator pulls out the upward pulling rod 711 to release the blocking handle 73 from the restriction of the upward pulling rod 711. When the operator pushes the push handle 61 upward to make the blade body 2 continue to move upward to the second downward pulling rod 7212, under the action of the blocking handle 73, the second downward pulling rod 7212 is pushed and flipped upward until the blocking handle 73 passes over the second downward pulling rod 7212 to the top of the second downward pulling rod 7212. At this time, under the action of the second torsion spring 7213, the second downward pulling rod 7212 automatically flips downward and returns to a horizontal state.

[0055] In this embodiment, the upward pulling rod 711 and the downward pulling rod 721 are designed to be two sections and connected by a torsion spring. When the operator moves the push handle 61 up and down to drive the blade 2 to switch between the initial state and the use state, he only needs to pull the upward pulling rod 711 or the downward pulling rod 721, without having to pull it twice to avoid the blocking handle 73, making the operation more convenient.

[0056] In this embodiment, it is further preferred that both the second upward drawer rod 7112 and the second downward drawer rod 7212 adopt a one-way rotation structure, that is, the second upward drawer rod 7112 can only be tilted downward from an initial horizontal state and then returned to the initial horizontal state relative to the first upward drawer rod 7111, but cannot be tilted upward from the initial horizontal state, and the second downward drawer rod 7212 can only be tilted upward from an initial horizontal state and then returned to the initial horizontal state relative to the first downward drawer rod 7211, but cannot be tilted downward from the initial horizontal state. This not only restricts the upward movement of the stop handle 73 when in use or downward movement in the initial state, thus serving as an auxiliary vertical limit, but also ensures that the upward drawer rod 711 and the downward drawer rod 721 always remain in a horizontal state during the drawing process.

[0057] The one-way rotation structure can be achieved by providing a limit platform (not shown) protruding in opposite directions at the end portion where the second upward pulling rod 7112 and the first upward pulling rod 7111 are connected. For example, a limit platform protruding in the direction of the second upward pulling rod 7112 can be provided on the end face of the first upward pulling rod 7111 facing the second upward pulling rod 7112. When the rod is flipped to a horizontal state, the limit platform can be placed on the end face of the second upward pulling rod 7112, preventing the rod from further flipping upward, thereby achieving the limitation of one-way rotation. Similarly, the first downward pulling rod 7211 and the second upward pulling rod 7112 also adopt the above one-way rotation structure.

[0058] like Figure 3 and Figure 7 As shown, in the present embodiment, it is further preferred that an upward limit baffle 74 is provided on the side wall of the cavity 3 corresponding to the upward pull rod 711, and the upward limit baffle 74 extends horizontally outward, and the free end of the upward pull rod 711 (that is, the free end of the second upward pull rod 7112) is restricted below the upward limit baffle 74 to achieve vertical limitation, thereby restricting the second upward pull rod 7112 from flipping upward when the blade body 2 is in use, that is, restricting the blade body 2 from moving upward. Corresponding to the downward pull-out rod 721, a downward limit baffle 75 is provided on the side wall of the cavity 3. The downward limit baffle 75 is placed above the upward limit baffle 74. The downward pull-out rod 721 extends forward horizontally. The free end of the downward pull-out rod 721 (that is, the free end of the second downward pull-out rod 7212) is restricted above the downward limit baffle 75 to achieve vertical limitation, limiting the second downward pull-out rod 7212 from flipping downward when the blade body 2 is in the initial state, that is, limiting the blade body 2 from moving downward.

[0059] In this embodiment, further, Figure 2 and Figure 3 As shown, the telescopic mechanism also includes a spring 5 installed above the blade body 2. The spring 5 is sleeved on the outside of the connecting end 24. The blade body 2 is movably connected to the housing 1 through the spring 5. There is a mounting platform (not shown) with a diameter larger than the connecting end 24 at the top of the connecting rod 23 and the bottom of the connecting end 24. The top and bottom of the spring 5 are respectively in contact with the top wall of the housing 1 forming the cavity 3 and the mounting platform at the top of the connecting rod 23. Figures 1 to 3 In the initial state (i.e. the blade body 2 is in the retracted state), the spring 5 is in a compressed elastic deformation state. Figures 5 to 7When the blade 2 is in the use state (i.e., the blade body 2 is in the extended state), the spring 5 is in a stretched elastic deformation state. The function of the spring 5 is to enable the blade body 2 to automatically drive the blade body 2 to cross the limit position of the initial state and the limit position of the use state according to the elasticity of the spring 5. Among them, the limit position of the initial state specifically refers to the position where the blocking handle 73 abuts against the top of the downward drawing rod 721. When the downward drawing rod 721 is pulled out, the blocking handle 73 is free from the restriction of the downward drawing rod 721. At this time, under the action of the spring 5, the blocking handle 73 automatically moves downward to between the downward drawing rod 721 and the upward drawing rod 711; the limit position of the use state specifically refers to the position where the blocking handle 73 abuts against the bottom of the upward drawing rod 711. When the upward drawing rod 711 is pulled out, the blocking handle 73 is free from the restriction of the upward drawing rod 711. At this time, under the action of the spring 5, the blocking handle 73 automatically moves upward to between the downward drawing rod 721 and the upward drawing rod 711.

[0060] In this embodiment, it is further preferred that the pressure plate assembly 4 is composed of two pressure plates 41, and the two pressure plates 41 are horizontally arranged on both sides of the cutting knife 22. The two pressure plates 41 are extended vertically forward from the side of the base 21, and the lower surface of the pressure plate 41 is the pressing surface, which is in contact with the surface of the tape during cutting.

[0061] More preferably, a fixing frame 42 is provided between the two pressing plates 41. Both pressing plates 41 are fixedly connected to the middle fixing frame 42. The fixing frame 42 preferably has an inverted V-shaped structure. At least the front ends of the two pressing plates 41 extend from the side of the cavity 3 to press the tape downward during cutting.

[0062] By setting up the pressure plate assembly 4, before the cutter contacts the tape, the pressure plate assembly 4 is used to press the tape downward, stretching the tape and giving the tape greater tension. This is beneficial in forming sufficient shear force during the contact between the blade of the cutter 22 and the tape during the process of cutting the tape, which is beneficial to better cutting the tape, high cutting efficiency, and good cutting quality, and the tape will not be damaged during the cutting process.

[0063] The following describes in detail the process of using the tool:

[0064] like Figures 1 to 3 As shown, when the tool is in its initial non-working state, the connecting end 24 on the top of the blade body 2 is connected to the top wall of the cavity 3 formed by the shell 1 through the spring 5. At this time, the spring 5 is in a compressed state, and the stop handle 73 is in contact with the second downward pull-out rod 7212. The stop handle 73 is placed above the second downward pull-out rod 7212, and the free end of the second downward pull-out rod 7212 is restricted above the downward limit baffle 75, completely fixing the blade body 2 in the cavity 3 of the shell 1, and the blade body 2 will not move downward.

[0065] When the tape needs to be cut and the knife body 2 needs to be moved downward, the operator pulls out the first downward pull rod 7211 by hand, and the second downward pull rod 7212 will move outward along with the first downward pull rod 7211. During the movement, the second downward pull rod 7212 breaks away from the restriction of the downward limit baffle 75. Further, when the blocking handle 73 breaks away from contact with the second downward pull rod 7212, the spring 5 uses the elastic force stored when it is compressed to pop the knife body 2 as a whole downward, so that the blocking handle 73 bounces to a position between the second downward pull rod 7212 and the second upward pull rod 7112. During this process, the first downward pull rod 7211 and the second downward pull rod 7212 always remain in a horizontal state.

[0066] When the operator releases the first downward pull rod 7211 , the downward pull spring 722 will automatically rebound the first downward pull rod 7211 and the second downward pull rod 7212 to the retracted initial position, and the free end of the second downward pull rod 7212 abuts against the top of the downward limit baffle 75 .

[0067] like Figures 5 to 7 As shown, the operator continues to push the push handle 61 downward with his hand, and the blocking handle 73 moves downward accordingly. During this process, the second upward pulling rod 7112 is flipped downward relative to the first upward pulling rod 7111 under the action of the blocking handle 73 until the blocking handle 73 passes over the second upward pulling rod 7112 and reaches Figure 7 The second upward pull rod 7112 stops at the position shown. At this time, the second upward pull rod 7112 is reset to a horizontal state under the action of the first torsion spring 7113, and the free end of the second upward pull rod 7112 abuts against the bottom of the upward limit baffle 74, restricting the blocking handle 73 to the bottom of the second upward pull rod 7112.

[0068] At this point, the action of the blade body 2 extending out of the shell 1 is completed. At this time, the spring 5 is in a stretched state, the blocking handle 73 is in contact with the second upward pull rod 7112, and is restricted below the second upward pull rod 7112, vertically positioning the blade body 2 to prevent the blade body 2 from moving upward and retracting into the shell 1.

[0069] At this point, the operator operates the cutter, pressing the two pressure plates 41 on the cutter body 2 against the tape, and moving the cutter along the cutting line on the tape. The cutter 22 on the cutter body 2 then cuts the tape. For applications requiring sealant to be applied to the gap between the window and the body, the cutter can be used to cut the plastic-based tape covering the gap between the body and the window. The cutter is then moved along the gap, cutting the tape in the gap and exposing the gap, preparing for the application of sealant.

[0070] like Figures 1 to 3 、 Figures 5 to 7As shown, after the use of the tool is completed, the above components are operated in reverse. First, the first upward pulling rod 7111 and the second upward pulling rod 7112 are pulled out of the shell 1 to release the blocking handle 73 from the restriction of the second upward pulling rod 7112. Under the elastic force of the spring 5, the knife body 2 is driven to retract upward, and the blocking handle 73 moves to a position between the second upward pulling rod 7112 and the second downward pulling rod 7212. During this process, the first upward pulling rod 7111 and the second upward pulling rod 7112 always remain in a horizontal state.

[0071] When the first upward pulling rod 7111 is released, the upward pulling spring 712 will automatically rebound the first upward pulling rod 7111 and the second upward pulling rod 7112 to the initial position, and the free end of the second upward pulling rod 7112 abuts against the bottom of the upward limit baffle 74.

[0072] The operator continues to push the push handle 61 upward with his hand, and the blocking handle 73 moves upward accordingly. During this process, the second downward pulling rod 7212 is flipped upward relative to the first downward pulling rod 7211 under the action of the blocking handle 73 until the blocking handle 73 passes over the second downward pulling rod 7212 and reaches Figure 3 At this time, the second downward pull rod 7212 is reset to a horizontal state under the action of the second torsion spring 7213, and the free end of the second downward pull rod 7212 abuts against the top of the downward limit baffle 75, limiting the blocking handle 73 above the second downward pull rod 7212.

[0073] At this point, the action of retracting the blade body 2 into the shell 1 is completed. At this time, the spring 5 is in a compressed state, the blocking handle 73 is in contact with the second downward pull-out rod 7212, and is restricted above the second downward pull-out rod 7212, vertically positioning the blade body 2 to prevent the blade body 2 from moving downward and extending out of the shell 1.

[0074] After the tool adopts the above solution, it has the following beneficial effects:

[0075] 1. The cutter body is installed in the shell through a telescopic mechanism. When the cutter is in the initial state of not in use, the cutter body will be completely retracted into the shell. Only when in use can the cutter body be extended from the shell to perform normal tape cutting work, which can effectively prevent the cutter from accidentally scratching workers and ensure the safety of the operation.

[0076] 2. The tool is provided with a pressure plate assembly. Before the cutter contacts the tape waiting to be cut, the pressure plate assembly is used to press the tape waiting to be cut downward, stretching the tape waiting to be cut and giving it greater tension. This is beneficial in the cutting process. It is beneficial to form sufficient shear force during the contact between the cutter blade and the tape waiting to be cut, so as to better cut the tape, improve cutting efficiency, and improve cutting quality. The tape waiting to be cut will not be damaged during the cutting process.

[0077] 3. This tool is particularly suitable for cutting flexible, thin sheet or strip materials.

[0078] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any technician familiar with this patent can make some changes or modifications to equivalent embodiments with equivalent changes using the above-mentioned technical contents without departing from the scope of the technical solution of the present invention. The implementation schemes in the above embodiments can be further combined or replaced. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the solution of the present invention.

Claims

1. A cutting tool, characterized in that: The utility model comprises a shell and a blade body, wherein the shell has a cavity for accommodating the blade body, the bottom and / or the front side of the cavity are open, the blade body is installed in the cavity by a telescopic mechanism, and the blade body can be selectively extended or retracted from the cavity by the telescopic mechanism, and a pressure plate assembly is installed on the blade body, and the pressure plate assembly is used to press the workpiece to be cut in a direction perpendicular to the surface of the workpiece to be cut during cutting.

2. The cutting tool according to claim 1, characterized in that: The telescopic mechanism includes an operating portion and a limiting portion. The operating portion is connected to the blade body and is configured to be manually operated and movable up and down relative to the housing. The limiting portion is configured to limit the blade body to a retracted initial state or an extended use state.

3. The cutting tool according to claim 2, characterized in that: The operating portion is a push handle extending vertically from the side of the blade body. A slide groove extending vertically is provided on the side wall of the shell. The push handle extends to the outside of the shell through the slide groove and slides along the slide groove.

4. The cutting tool according to claim 2, characterized in that: The limiting part includes an upward limiting part, a downward limiting part and a stop handle extending perpendicularly to the blade body. The upward limiting part and the downward limiting part can be pulled out and installed on the side of the shell. When pulled out, they are disengaged from the stop handle to enable the blade to move freely up and down. When retracted, they cooperate with the stop handle to limit the blade body to a retracted initial state or an extended use state.

5. The cutting tool according to claim 4, characterized in that: The upward limiting part includes an upward pull rod and an upward pull spring, and the upward pull spring is sleeved on the upward pull rod. The downward limiting part includes a downward pull rod and a downward pull spring, and the downward pull spring is sleeved on the downward pull rod. The upward pull spring and the downward pull spring respectively drive the upward pull rod and the downward pull rod to reset from the pulled-out position to the retracted position.

6. The cutting tool according to claim 5, characterized in that: The upward pull-out rod includes a first upward pull-out rod and a second upward pull-out rod, which are connected by a first torsion spring. The downward pull-out rod includes a first downward pull-out rod and a second downward pull-out rod, which are connected by a second torsion spring. The first upward pull-out rod and the first downward pull-out rod are respectively installed through the shell, and the second upward pull-out rod and the second downward pull-out rod can be flipped in the vertical direction relative to the first upward pull-out rod and the first downward pull-out rod.

7. The cutting tool according to claim 5, characterized in that: Corresponding to the upward pull rod, an upward limit baffle is provided on the side wall of the cavity, and the free end of the upward pull rod is lowered and rests on the bottom of the upward limit baffle to achieve vertical limitation. Corresponding to the downward pull rod, a downward limit baffle is provided on the side wall of the cavity, and the free end of the downward pull rod is lowered and rests on the top of the downward limit baffle to achieve vertical limitation.

8. The cutting tool according to claim 4, characterized in that: The upward limiting portion, the downward limiting portion and the operating portion are mounted on the same side wall of the housing, and the blocking handle and the operating portion are mounted perpendicularly to each other on the knife body in a horizontal direction.

9. The cutting tool according to claim 2, characterized in that: The telescopic mechanism further includes a spring installed above the blade body and between the top wall of the cavity. The spring undergoes elastic deformation in the initial state and the use state, and the spring elastically drives the blade body to pass the limit position in the initial state or the use state.

10. The cutting tool according to claim 1, characterized in that: The knife body includes a base, a cutting knife and a connecting rod. The base is a rectangular parallelepiped structure. The base is loosely fitted with the inner wall of the cavity and slides along the inner wall of the cavity. The cutting knife is arranged on the front side of the base and extends in the vertical direction of the base. The telescopic mechanism is connected to the connecting rod.

11. The cutting tool according to any one of claims 1 to 10, characterized in that: The pressing plate assembly includes two pressing plates, which extend horizontally outward from the front side of the knife body. The pressing plates have a pressing surface, which fits the surface of the workpiece to be cut during cutting.

Images