Sheet cutting device

Abstract

The utility model relates to a sheet cutting device, which can cut a sheet into a plurality of parts by one cutting action, and comprises a bottom plate seat used for bearing the sheet; the cutting mechanism is arranged above the bottom plate seat, and the cutting mechanism comprises a knife rest and a plurality of blades connected to the knife rest; the movement guide mechanism is arranged between the cutting mechanism and the bottom plate seat and used for guiding the cutting mechanism to move on the bottom plate seat, and the blade cuts the sheet on the bottom plate seat in the moving process so as to achieve sheet cutting; wherein the base plate seat comprises a positioning piece which is used for fixing the sheet so as to prevent the sheet from moving, and the positioning piece is further configured to limit one side end of the sheet to be a reference position. According to the sheet cutting device, rapid cutting can be achieved, positioning is convenient, and waste materials are not generated.

Description

Technical Field

[0001] The present application relates to the technical field of sheet cutting, and in particular to a sheet cutting device. Background Art

[0002] In many application scenarios, it is necessary to cut a large sheet into small pieces of required specifications. For example, in the field of testing machines, it is necessary to cut the thermal pad into the specifications corresponding to the chip so that it can be adhered to the corresponding chip for use. The current method for cutting the thermal pad is to fit the metal mold with the thermal pad, and then use a utility knife to cut the thermal pad into the required specifications in the mold. However, due to the large number of chip specifications and quantities, this cutting method requires the replacement of different molds for chips of different specifications and requires manual cutting, which is labor-intensive and inefficient. In some other application fields, such as the production of paper or release film, there are also equipment that can achieve batch cutting, but it usually has problems such as inconvenience in fixing the paper or release film, and the area where the paper or release film is used for fixing will form scraps for discarding after cutting.

[0003] In view of this, it is necessary to propose a new technical solution to overcome the shortcomings of the prior art. Utility Model Content

[0004] Based on this, the present application provides a sheet cutting device that can achieve fast cutting, convenient positioning, and no waste.

[0005] To this end, the present application adopts the following technical solution: a sheet cutting device capable of cutting a sheet into multiple copies by one cutting action, the sheet cutting device comprising:

[0006] A bottom plate seat, used for carrying the sheet;

[0007] A cutting mechanism is disposed above the base plate, the cutting mechanism comprising a knife holder and a plurality of blades connected to the knife holder; and

[0008] A motion guide mechanism is disposed between the cutting mechanism and the bottom plate seat, and is used to guide the cutting mechanism to move on the bottom plate seat, and the blade cuts the sheet on the bottom plate seat during the movement to achieve sheet cutting;

[0009] Wherein, the bottom plate seat includes a positioning member for fixing the sheet to prevent the sheet from moving, and the positioning member is also configured to limit one side end of the sheet to a reference position.

[0010] In one embodiment, a scale is provided on the base plate, and a reference line of the scale is the same as the reference position limited by the positioning member.

[0011] In one embodiment, the scale is assembled on the base seat or integrally formed with the base seat.

[0012] In one embodiment, the sheet includes a sheet body and a thin film covering the lower side of the sheet body. The thin film extends beyond the sheet body at least at the side end where the sheet is restricted to the reference position. The positioning member presses the thin film and the side surface of the positioning member abuts against the side end of the sheet body.

[0013] In one embodiment, the positioning member includes a limiting strip extending along the moving direction of the cutting mechanism and a limiting block located at the end of the limiting strip. The base seat has a limiting groove that cooperates with the limiting block to define the position of the positioning member.

[0014] In one embodiment, the cutting depth of the blade is configured to be the same as the thickness of the sheet body, so that the sheet body is cut while the thin film is not cut.

[0015] In one embodiment, the tool holder includes at least one support shaft, and the plurality of blades are connected to the support shaft at adjustable intervals. Among them, a plurality of grooves are provided at intervals on the support shaft, and the blades are provided with elastic convex portions. When the blades slide axially along the support shaft under force, the distance between the plurality of blades is defined by the cooperation of the elastic convex portions and different grooves.

[0016] In one embodiment, the height of the tool holder and the plurality of blades above the base seat is adjustable.

[0017] In one embodiment, the tool holder includes a support shaft and shaft seats supported at both ends of the support shaft. Adjusting screws are provided in the shaft seats, and the lower ends of the adjusting screws abut against the motion guiding mechanism.

[0018] In one embodiment, the motion guiding mechanism includes a guide rail provided on the base seat and a slider provided on the tool holder.

[0019] For the sheet cutting device provided by the present application, the positioning member for fixing the sheet on the base seat simultaneously restricts one side end of the sheet to the reference position, which can realize the rapid positioning of the sheet, ensure the cutting specifications of the sheet and generate no waste after cutting. The positioned sheet can be cut into multiple pieces by the cutting mechanism with a single movement relative to the base seat, and rapid cutting can be achieved. Description of the Drawings

[0020] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can also be obtained based on these drawings.

[0021] Figure 1 It is a perspective view of the sheet cutting device of the present application.

[0022] Figure 2 It is Figure 1 The partial enlarged view at position A in

[0023] Figure 3 It is Figure 1 The partial enlarged view at position B in

[0024] Figure 4 It is a perspective view of another angle of the sheet cutting device of the present application.

[0025] Figure 5 It is a partial cross-sectional view of the blade in the sheet cutting device of the present application.

[0026] Figure 6 It is a perspective view of the bottom plate seat in the sheet cutting device of the present application.

[0027] The reference numerals of each component are as follows:

[0028] 100, sheet cutting device; 1, bottom plate seat; 101, limit groove; 11, rear baffle; 12, stop post; 14, scale; 15, positioning member; 151, limit strip; 16, limit block; 17, handle; 2, cutting mechanism; 21, support shaft; 211, plunger shaft; 2110, groove; 212, optical axis; 22, shaft seat; 23, adapter; 24, adjusting screw; 25, handle; 26, blade; 260, plunger hole; 2601, shaft hole; 261, small round knife; 3, motion guiding mechanism; 31, guide rail; 32, slider; 5, sheet; 51, sheet body; 52, film. Detailed implementation manners

[0029] To make the above objects, features, and advantages of the present application more obvious and understandable, the following will describe the detailed implementation manners of the present application in conjunction with the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein. Those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0030] It should be noted that when a component is referred to as "fixed to" or "disposed on" another component, it can be directly on the other component or there may also be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the description of this application are only for illustrative purposes and do not represent the only implementation.

[0031] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of this application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0032] In this application, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first feature is in direct contact with the second feature, or the first feature and the second feature are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is lower than that of the second feature.

[0033] Unless otherwise defined, all technical and scientific terms used in the description of this application have the same meaning as commonly understood by those skilled in the technical field to which this application belongs. The terms used in the description of this application are only for the purpose of describing specific implementations and are not intended to limit this application. The term "and / or" used in the description of this application includes any and all combinations of one or more of the related listed items.

[0034] Please refer to Figures 1 to 6As shown in the figure, the present application provides a sheet cutting device 100, which can cut a sheet 5 into multiple pieces by one cutting action. The sheet cutting device 100 includes a bottom plate base 1, a cutting mechanism 2, and a motion guiding mechanism 3. The bottom plate base 1 is used to carry the sheet 5. The cutting mechanism 2 is arranged above the bottom plate base 1 and is used to move relative to the bottom plate base 1 to cut the sheet 5. The cutting mechanism 2 includes a tool holder and a plurality of blades 26 connected to the tool holder. The motion guiding mechanism 3 is arranged between the cutting mechanism 2 and the bottom plate base 1 and is used to guide the cutting mechanism 2 to move on the bottom plate base 1. During the movement, the sheet 5 on the bottom plate base 1 is cut by the blades 26 to realize the cutting of the sheet 5. Among them, the bottom plate base 1 includes a positioning member 15 for fixing the sheet 5 to prevent the sheet 5 from moving, and the positioning member 15 is further configured to limit one side end of the sheet 5 as a reference position.

[0035] In the present application, the positioning member 15 fixes the sheet 5 on the bottom plate base 1 to prevent the sheet 5 from moving due to the force of the blades 26 during the process of the cutting mechanism 2 contacting and cutting the sheet 5, resulting in the sheet 5 being cut into waste. At the same time, the positioning member 15 also limits one side end of the sheet 5 as a reference position. Based on this side end, it is ensured that the cutting mechanism 2 will not be skewed during the cutting process, so as to ensure that the cutting specifications of the sheet 5 meet the requirements and no waste will be generated.

[0036] Please refer to Figure 1 、 Figure 3 and Figure 6 As shown in the figure, in this embodiment, the positioning member 15 includes a limiting strip 151 extending along the moving direction of the cutting mechanism 2 and a limiting block 16 located at the end of the limiting strip 151. The bottom plate base 1 has a limiting groove 101 that cooperates with the limiting block 16 to limit the position of the positioning member 15. By the cooperation of the limiting groove 101 and the limiting block 16, the certainty of the position of the positioning member 15 on the bottom plate base 1 is ensured, so as to ensure that the position of the sheet 5 positioned by the positioning member 15 on the bottom plate base 1 is determined. In this embodiment, the limiting block 16 is a rectangular block, and the limiting groove 101 is a matching rectangular groove; the limiting block 16 is fixed to the lower side of the end of the limiting strip 151 by screws. Of course, in other embodiments, the shapes of the limiting block 16 and the limiting groove 101 are not limited to this, and they can be set to other shapes, such as a polygonal column and a polygonal groove, etc.; the assembly method of the limiting block 16 and the limiting strip 151 is not limited to screw connection either. For example, the two can be integrally formed.

[0037] In this embodiment, the limiting strip 151 included in the positioning member 15 is a metal member with a certain weight, which can press and fix the sheet material 5 by its own gravity, so the fixing is convenient. Correspondingly, the sheet material 5 includes a sheet body 51 and a thin film 52 covering the lower side of the sheet body 51. The thin film 52 extends beyond the sheet body 51 at least at the side end where the sheet material 5 is restricted to the reference position. The positioning member 15 presses the thin film 52 and the side surface of the positioning member 15 abuts against the side end of the sheet body 51. By picking up the limiting strip 151 and placing the part of the thin film 52 that extends beyond the sheet body 51 under the limiting strip 151, and then putting down the limiting strip 151 to press the thin film 52, since the sheet body 51 above the thin film 52 has a certain thickness, it is easy to abut against the side surface of the limiting strip 151 to achieve reference positioning. In this embodiment, the positioning member 15 presses and fixes the sheet material 5 by its own gravity; in other embodiments, the positioning member 15 can also fix the sheet material 5 through other locking devices, such as abutting screws, etc. In this embodiment, the thin film 52 extends beyond the sheet body 51 on all four perimeters of the sheet body 51, so that any side end of the sheet body 51 can be restricted as the reference position. When the sheet body 51 needs to be cut in two mutually perpendicular directions, it is ensured that the side end can be restricted as the reference position in two mutually perpendicular placement angles. In this embodiment, the sheet body 51 is thermal conductive silicone grease, and the thin film 52 is a peelable release film.

[0038] In some embodiments, the sheet material 5 needs to be cut into strips, so it can be achieved by pushing the cutting mechanism 2 once from front to back. In other embodiments, the sheet material 5 needs to be cut into rectangular blocks, then after the sheet material 5 is cut into strips, the sheet material 5 needs to be rotated 90° as a whole and cut again. To prevent the cut sheet material 5 from spreading and being inconvenient for overall rotation, in one embodiment, the cutting depth of the blade 26 is configured to be the same as the thickness of the sheet body 51, so that the sheet body 51 is cut while the thin film 52 is not cut, which is convenient for moving the sheet body 51 as a whole through the thin film 52. It should be noted that the cutting depth of the blade 26 being configured to be the same as the thickness of the sheet body 51 so that the sheet body 51 is cut should be understood that it is cut to the extent that it can be separated, and it does not necessarily mean that each part of the sheet body 51 cut is completely separated from each other; it can be understood that, for example, the sheet body 51 is thermal conductive silicone grease, and there can still be a small thickness connection at the bottom of the cut sheet body 51, and the user can gently pull to separate each part of the cut sheet body 51 from each other, and this situation should also be understood as the sheet body 51 being cut.

[0039] In this embodiment, the spacing between several blades 26 is adjustable, so that the sheet material 5 can be cut into small pieces of different size specifications. Please refer to Figures 1 to 3As shown, a scale 14 is provided on the bottom plate base 1 to facilitate visually displaying the distance between the blades 26. The reference line of this scale 14 is the same as the reference position defined by the positioning member 15. Thus, when the blades 26 are adjusted according to the scale 14, the size is the size of the blades 26 relative to the side end of the sheet material 5 that serves as the reference position. In this embodiment, the fact that the reference line of the scale 14 is the same as the reference position defined by the positioning member 15 specifically means that the zero line of the scale 14 is aligned with the side end edge of the sheet material 5 that serves as the reference position. In this embodiment, the scale 14 is assembled on the bottom plate base 1. Thus, it can be fixed on the bottom plate base 1 by purchasing a finished ruler. In other embodiments, the scale 14 can also be integrally formed on the bottom plate base 1, that is, when machining the bottom plate base 1, the scale is directly engraved or printed on the bottom plate base 1. As Figure 1 shown, in this embodiment, the scale 14 is arranged at the front edge of the bottom plate base 1. The front end is the end closer to the human body during use, and the end far from the human body is the rear end. The scale 14 is arranged at the front end of the bottom plate base 1 closer to the human body, which is convenient for the user to adjust the position of the blade 26.

[0040] Please refer to Figure 1 、 Figure 2 and Figure 5As shown, the cutting mechanism 2 includes a knife holder, which includes at least one support shaft 21, and a plurality of blades 26 are connected to the support shaft 21 with adjustable spacing, wherein the support shaft 21 is provided with a plurality of grooves 2110 arranged at intervals, and the blades 26 are provided with elastic protrusions, and when the blades slide along the axial direction of the support shaft 21 under force, the elastic protrusions cooperate with different grooves 2110 to limit the distance between the plurality of blades 26. In this embodiment, the support shaft 21 is two cylindrical shafts, one of which is a plunger shaft 211, which is provided with a groove 2110. The groove 2110 is an annular groove, and of course it can also be a spherical pit or a through hole, etc., which can be limited by the elastic protrusion. The other one included in the support shaft 21 is an optical axis 212, and the plunger shaft 211 and the optical axis 212 cooperate to prevent the blade 26 from rotating. In another embodiment, the support shaft 21 can also be set as one, and other structures are used to prevent the blade 26 from rotating. For example, the support shaft 21 is a shaft with a D-shaped, rectangular or polygonal cross section, and the corresponding blade 26 has a hole matching it, so that the blade 26 can also be prevented from rotating. In this embodiment, the spacing between adjacent grooves 2110 is 5mm, so that the size adjustment with an accuracy of 5mm can be achieved. According to the accuracy requirements of the cutting specifications to be cut, the spacing between adjacent grooves 2110 can be set to other sizes. The elastic protrusion forms a plunger structure. For example, in one embodiment, it is arranged in a plunger hole 260 opened on the blade 26, and the lower end of the plunger hole 260 penetrates to the shaft hole 2601 opened on the blade 26 for the plunger shaft 211 to pass through. The plunger structure includes a spring and a metal ball or a metal column supported by the spring. The metal ball or the metal column is partially inserted into the groove 2110 of the plunger shaft 211 under the action of the spring. When the blade 26 is moved along the support shaft 21, the metal ball or metal column can move upward to slide out of a groove 2110 and slide into an adjacent groove 2110 to adjust the position of the blade 26. In this embodiment, the blade 26 has a small round knife 261. When the blade holder drives the blades 26 to move, the small round knife 261 contacts the sheet 5 to achieve cutting. In this embodiment, the small round knife 261 is a tungsten steel small round knife. In other embodiments, the blade 26 can also use a knife head of other materials or shapes.

[0041] See also Figure 1 and Figure 4As shown in the figure, to meet the cutting requirements of sheets 5 with different thicknesses, the cutting mechanism 2 is also set to be adjustable in the height direction. Specifically, the tool holder and several blades 26 are adjustable in height above the base plate 1. In this embodiment, the tool holder includes a support shaft 21 and shaft seats 22 supported at both ends of the support shaft 21. An adjusting screw 24 is provided in the shaft seat 22, and the lower end of the adjusting screw 24 abuts against the motion guiding mechanism 3. In this embodiment, the shaft seat 22 includes an adapter 23, which is connected to the slider 32 of the motion guiding mechanism 3. A threaded hole penetrating up and down is provided in the adapter 23, and the adjusting screw 24 is threadedly connected to the threaded hole. The length of the adjusting screw 24 is greater than the depth of the threaded hole, so that the lower end of the adjusting screw 24 can pass through the threaded hole and abut against the slider 32. By screwing the adjusting screw 24 clockwise or counterclockwise, the length of the adjusting screw 24 extending out of the threaded hole can be changed, thereby changing the position of the shaft seat 22 and the entire tool holder and blades 26 in the up and down directions, so that sheets 5 with different thicknesses can be placed between the blades 26 and the base plate 1 for cutting.

[0042] Please continue to refer to Figure 1 and Figure 4 As shown in the figure, the motion guiding mechanism 3 includes a guide rail 31 provided on the base plate 1 and a slider 32 provided on the tool holder. A chute is provided on the slider 32 that can be sleeved on the guide rail 31, and the two cooperate to slide. In this embodiment, there are two sets of sliders 32 and guide rails 31, which are parallel to each other. In one embodiment, their parallelism is not less than 0.02. In other embodiments, the motion guiding mechanism 3 can also adopt other structures, such as a structure in which a roller cooperates with a roller groove. In this embodiment, several stoppers 12 are also provided on the base plate 1, which can be used to limit the assembly accuracy of the guide rail 31 and can be used to contact the slider 32 to limit the two extreme positions of the cutting mechanism 2 in the moving direction. A rear baffle 11 for shielding and protecting is provided at the rear end of the base plate 1, and a handle 17 for conveniently moving the sheet cutting device 100 is provided at the side end of the base plate 1. The tool holder also includes a handle 25 for the user to push conveniently.

[0043] In one embodiment, the process of using the sheet cutting device 100 to cut the thermal conductive gasket is as follows: First, lift the positioning member 15, place the thermal conductive gasket along the limiting strip 151 of the positioning member 15, and press the film 52 of the thermal conductive gasket so that one side of the sheet body 51 of the thermal conductive gasket abuts against the side of the limiting strip 151; then move the blade 26, and adjust the distance between the blades 26 according to the cutting size requirements; then push the handle 25 to make the cutting mechanism 2 move along the guide rail 31 to cut the sheet body 51; finally, manually rotate the thermal conductive gasket 90°, and position the thermal conductive gasket, adjust the distance between the blades 26 (if necessary) and complete the cutting in the same way as above.

[0044] As can be seen from the above description of the specific embodiments, for the sheet cutting device 100 provided by the present application, the positioning member 15 on the bottom plate base 1 for fixing the sheet 5 simultaneously restricts one side end of the sheet 5 as the reference position, which can achieve the rapid positioning of the sheet 5, ensure the cutting specifications of the sheet 5 and no waste is generated after cutting. The positioned sheet 5 can be cut into multiple pieces by the cutting mechanism 2 with a single movement relative to the bottom plate base 1, and rapid cutting can be achieved.

[0045] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0046] The above-described embodiments only represent several implementation manners of the present application. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. A sheet material cutting device capable of cutting a sheet material into multiple pieces by one cutting action, characterized in that: The sheet cutting device comprises: A bottom plate seat, used for carrying the sheet; A cutting mechanism is disposed above the base plate, the cutting mechanism comprising a knife holder and a plurality of blades connected to the knife holder; and A motion guide mechanism is disposed between the cutting mechanism and the bottom plate seat, and is used to guide the cutting mechanism to move on the bottom plate seat, and the blade cuts the sheet on the bottom plate seat during the movement to achieve sheet cutting; Wherein, the bottom plate seat includes a positioning member for fixing the sheet to prevent the sheet from moving, and the positioning member is also configured to limit one side end of the sheet to a reference position.

2. The sheet cutting device according to claim 1, characterized in that: The base plate seat is provided with a scale, and the reference line of the scale is the same as the reference position limited by the positioning member.

3. The sheet cutting device according to claim 2, characterized in that: The scale is assembled on the base plate, or is integrally formed on the base plate.

4. The sheet cutting device according to claim 1, characterized in that: The sheet material includes a sheet material body and a film covering the lower side of the sheet material body, wherein the film extends beyond the sheet material body at least at the side end where the sheet material is restricted to the reference position, and the positioning member presses the film and the side surface of the positioning member abuts against the side end of the sheet material body.

5. The sheet cutting device according to claim 4, characterized in that: The positioning member comprises a limiting strip extending along the moving direction of the cutting mechanism and a limiting block located at the end of the limiting strip, and the base plate seat has a limiting groove cooperating with the limiting block to limit the position of the positioning member.

6. The sheet material cutting device according to claim 4, characterized in that: The cutting depth of the blade is configured to be the same as the thickness of the sheet body, so that the sheet body is cut but the film is not cut.

7. The sheet cutting device according to claim 1, characterized in that: The tool holder includes at least one supporting shaft, and the plurality of blades are connected to the supporting shaft with adjustable spacing, wherein the supporting shaft is provided with a plurality of grooves arranged at intervals, and the blades are provided with elastic protrusions, and when the blades slide along the axial direction of the supporting shaft under force, the elastic protrusions cooperate with different grooves to limit the distance between the plurality of blades.

8. The sheet cutting device according to claim 1, characterized in that: The heights of the knife holder and the plurality of blades above the base plate seat are adjustable.

9. The sheet material cutting device according to claim 8, characterized in that: The tool holder comprises a supporting shaft and a shaft seat supported at two ends of the supporting shaft, an adjusting screw is arranged in the shaft seat, and the lower end of the adjusting screw abuts against the motion guide mechanism.

10. The sheet material cutting device according to claim 1 or 9, characterized in that: The motion guide mechanism comprises a guide rail arranged on the base plate seat and a slide block arranged on the tool holder.

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