Ceramic wafer punching clamp

Abstract

The utility model relates to the technical field of small component machining devices, in particular to a ceramic chip punching clamp. The utility model aims to solve the problem that dust is difficult to recover when a ceramic chip is punched. The ceramic chip punching device comprises a punching die piece, a clamping seat and a connecting structure used for being connected with a negative pressure device. The punching die piece is used for placing a ceramic wafer and is provided with a positioning through hole penetrating through the upper surface and the lower surface of the punching die piece, and the positioning through hole is used for positioning a to-be-punched area of the ceramic wafer; the clamping seat comprises a limiting assembly and a base, the base is provided with a hollowed-out area, the limiting assembly is used for enabling the punching die piece to cover an upper opening of the hollowed-out area, the positioning through hole is completely exposed in the hollowed-out area, the connecting structure is connected with the base in a sealed mode, and the connecting structure completely covers a lower opening of the hollowed-out area; wherein the ceramic chip adsorbs the upper surface of the punching membrane through negative pressure generated by the negative pressure device during punching.

Description

Technical Field

[0001] The utility model relates to the technical field of small component processing devices, and more specifically, to a ceramic sheet punching fixture. Background Art

[0002] The process of processing ceramic raw sheets into chips requires a drilling process. In order to ensure stability during drilling, the ceramic sheets need to be assembled in a suitable assembly. In addition, the ceramic sheets will inevitably produce ceramic dust during the drilling process. If dust extraction equipment is added to the surrounding environment of the assembly, it will be difficult to completely remove the dust, and it will inevitably lead to a complicated layout of the equipment related to the drilling process and occupy a large space, affecting the orderly layout of the overall ceramic sheet production line.

[0003] In view of this, it is necessary to improve the assembly device of the ceramic sheet drilling process in order to make breakthroughs in ceramic sheet assembly stability, dust removal efficiency, miniaturization, etc. Utility Model Content

[0004] The utility model aims to overcome at least one defect of the above-mentioned prior art and provides a ceramic sheet punching fixture for solving the problem of difficult dust recovery when punching holes in the ceramic sheet.

[0005] The technical solution adopted by the utility model is to provide a ceramic sheet punching fixture, including a punching die, a clamping seat and a connecting structure for connecting a negative pressure device;

[0006] The punching die is used to place the ceramic sheet, and the punching die is provided with positioning holes penetrating the upper and lower surfaces thereof, and the positioning holes are used to locate the area to be punched of the ceramic sheet;

[0007] The clamping seat includes a limiting assembly and a base, the base is provided with a hollow area, the limiting assembly is used to limit the punching mold so that the punching mold covers the upper opening of the hollow area, and the positioning through hole is completely exposed in the hollow area, the connecting structure is sealed and connected to the lower surface of the base, and the connecting structure completely covers the lower opening of the hollow area;

[0008] When the ceramic sheet is punched, the negative pressure generated by the negative pressure device adsorbs the upper surface of the punching die.

[0009] The clamping seat and the connecting structure of this solution are integrated into one structure. The negative pressure generated by the negative pressure device makes the ceramic sheet to be drilled closely adhere to the drilling die sheet. At the same time, the positioning through holes of the drilling die sheet position the area to be drilled of the ceramic sheet. Thus, the ceramic sheet is stably set on the drilling fixture, ensuring the accuracy of the drilling process. On the other hand, the negative pressure generated by the negative pressure device also makes the ceramic dust generated during the drilling process pass through the positioning through holes, the hollow area, and the connecting structure in sequence and then be sucked away from the ceramic sheet drilling fixture by the negative pressure device, achieving the purpose of efficiently recovering the dust. In addition, the ceramic sheet drilling fixture of this solution also has the characteristics of a compact structure and is suitable for popularizing large-scale production and use.

[0010] Furthermore, an embedding groove for embedding the drilling die sheet is provided on the surface of the base, the hollow area is arranged in the embedding groove, and an embedding groove reserved part is left between the hollow area and the four peripheral edges of the embedding groove.

[0011] In this solution, the drilling die sheet is matched and installed through the embedding groove, which can play a certain limiting role on the drilling die sheet. Cooperating with the limiting component can improve the stability when the drilling die sheet together with the ceramic sheet is positioned in the hollow area. In addition, by leaving an embedding groove reserved part between the hollow area and the four peripheral edges of the embedding groove, it is ensured that the drilling die sheet completely covers the hollow area. Thus, when the negative pressure device generates negative pressure, the drilling die sheet together with the ceramic sheet can tightly adhere to and cover the upper opening of the hollow area, avoiding the situation of air leakage caused by the gap between the drilling die sheet and the hollow area.

[0012] Furthermore, the embedding groove is a "C"-shaped groove, the opening of the "C"-shaped groove is arranged on one side of the base, and a base surface reserved part is left between the "C"-shaped groove and the surface edge of the base.

[0013] In this solution, the drilling die sheet can be conveniently introduced into the embedding groove through the opening of the "C"-shaped groove, and the base surface reserved part therein is used to set necessary components such as the limiting component.

[0014] Furthermore, stepped structures are arranged on both transverse sides of the "C"-shaped groove, a clamping groove matching with the stepped structure is arranged on the lower surface of the drilling die sheet, and the longitudinal side of the "C"-shaped groove is used to abut against one side surface of the drilling die sheet.

[0015] The cooperation between the stepped structure and the clamping groove of this solution, on the one hand, provides a reliable guiding ability when the drilling die sheet is installed into the embedding groove, and on the other hand, also improves the moving restriction ability of the embedding groove on the drilling die sheet. In addition, blocking the forward movement of the drilling die sheet by the longitudinal side of the "C"-shaped groove can limit the movement of the drilling die sheet and also simply position the drilling die sheet.

[0016] Further, the limiting component includes a transverse cover plate and a longitudinal cover plate. The transverse cover plate is disposed on a reserved portion of the base surface corresponding to one of the horizontal sides of the "C"-shaped groove, and the longitudinal cover plate is disposed on a reserved portion of the base surface corresponding to the vertical side of the "C"-shaped groove. Both the transverse cover plate and the longitudinal cover plate cover at least a part of the punching die sheet.

[0017] In this solution, the transverse cover plate and the longitudinal cover plate respectively cover two adjacent right-angled sides of the punching die sheet, thereby reliably limiting the movement of the punching template in its own thickness direction. At the same time, a right-angled positioning structure is formed inside the transverse cover plate and the longitudinal cover plate. Since the ceramic sheet is usually rectangular, when the ceramic sheet is placed above the punching die sheet, this right-angled positioning structure can position the position between the ceramic sheet and the punching die sheet.

[0018] Further, the limiting component includes a detachable longitudinal pressing plate, which is used to press down the punching die sheet. When the longitudinal pressing plate presses down the punching die sheet, it is closely attached to a reserved portion of the embedding groove between the opening of the "C"-shaped groove and the hollowed-out area.

[0019] In this solution, when the punching die sheet is installed in the embedding groove, the front side of the punching die sheet abuts against the vertical side of the "C"-shaped groove, and the rear side of the punching die sheet is pressed down on the reserved portion of the embedding groove by the longitudinal pressing plate. At this time, the longitudinal pressing plate limits the movement of the punching die sheet in its own thickness direction, and the longitudinal pressing plate and the vertical side of the "C"-shaped groove jointly limit the movement of the punching die sheet in the front-rear direction. The two horizontal sides of the "C"-shaped groove limit the movement of the punching die sheet in the up-down direction. Thus, the movement of the punching die sheet in three-dimensional space is restricted, so that the punching die sheet is stably positioned at the upper opening of the hollowed-out area. When the ceramic sheet is adsorbed and positioned on the punching die sheet, accurate punching operations can be performed.

[0020] Further, the connection structure includes a dust filtering component and a bottom plate connection component arranged up and down. The dust filtering component is hermetically connected to the base, and the dust filtering component completely covers the lower opening of the hollowed-out area. The dust filtering component and the bottom plate connection component are hermetically connected, and the connection component is provided with an interface for connecting to a negative pressure device.

[0021] In this solution, large-particle ceramic dust is blocked in the area between the dust filtering component and the base through the dust filtering component, and small-particle ceramic dust can smoothly pass through the dust filtering component and then be evacuated from the ceramic sheet punching fixture through the interface of the connection component, thereby avoiding potential blockage of the interface by large-particle ceramic dust.

[0022] Further, the dust filtering component is a filter plate, and a plurality of micropores penetrating through the upper and lower surfaces of the filter plate are provided in the middle of the filter plate.

[0023] In this solution, the micropores in the middle of the filter plate are used to filter large particles of ceramic dust, and the four sides of the filter plate are sealed and connected to the lower surface of the base, which makes it easy to completely cover the lower opening of the hollow area, and the multi-microporous structure can ensure good gas flow capacity between the connecting structure and the clamping seat, so that the negative pressure generated by the negative pressure device is sufficient to stably adsorb the ceramic sheet on the perforated mold and fully extract the ceramic dust.

[0024] Further, a sealing ring is provided between the dust filtering component and the base; and / or a sealing ring is provided between the dust filtering component and the bottom plate connecting component.

[0025] This solution improves the sealing performance between the connection structure itself and the clamping seat through the sealing ring, and has a simple structure.

[0026] Furthermore, a concave cavity is provided on the surface of the perforated die sheet, and the concave cavity at least exposes a part of itself when the limiting component limits the perforated die sheet.

[0027] In this solution, when the punching die is limited on the clamping seat, the concave cavity can increase the force-bearing area of ​​the punching die, thereby facilitating the removal of the punching die from the clamping seat.

[0028] Furthermore, the positioning through holes are a plurality of long strip-shaped through holes.

[0029] Usually, the rectangular area in the middle of the ceramic sheet is evenly punched. The long strip through holes are easy to correspond to the ceramic holes in the same straight line. Then, several long strip through holes are sufficient to locate the rectangular area to be punched of the ceramic sheet. This solution can reduce the amount of holes opened in the punching mold and reduce the difficulty of setting the positioning through holes.

[0030] Furthermore, the clamping seat is provided with connecting holes around it.

[0031] This solution facilitates positioning connection with an external device through the connection hole.

[0032] Compared with the prior art, the beneficial effects of the utility model are as follows: 1) through the connection structure of the clamping seat and the negative pressure device being sealed in an up-and-down manner, the ceramic sheet can be stably positioned on the punching mold based on the negative pressure, and the dust generated during the punching process can be absorbed and stored in real time, and the clamping structure and the connection structure of the negative pressure device are integrated into one, thereby promoting a miniaturized layout; 2) through the cooperation of the transverse cover plate, the longitudinal cover plate and the detachable longitudinal pressure plate, the punching mold is stably limited in the embedded groove to avoid positional deviation during the punching process. At the same time, the ceramic sheet is positioned by the transverse cover plate and the longitudinal cover plate, so that the area to be punched of the ceramic sheet is accurately matched with the positioning through hole of the punching mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 The structure of the utility model when equipped with ceramic sheets Figure 1 .

[0034] Figure 2 The structure of the utility model when equipped with ceramic sheets Figure 2 .

[0035] Figure 3 for Figure 2 Side view of.

[0036] Figure 4 It is a structural explosion diagram of the utility model.

[0037] Figure 5 This is a structural diagram of the base.

[0038] Figure numerals: ceramic sheet 10, punching mold 100, positioning through hole 110, slot 120, cavity 130, clamping seat 200, transverse cover plate 210, longitudinal cover plate 220, longitudinal pressure plate 230, positioning hole 231, base 240, reserved portion 241 of base surface, hollow area 242, embedding groove 243, reserved portion 2431 of embedding groove, step structure 2432, matching hole position 2433, connecting hole 244, connecting structure 300, dust filtering component 310, micropore 311, bottom plate connecting component 320, interface 321, first sealing ring 330, second sealing ring 340. DETAILED DESCRIPTION

[0039] The drawings of the present invention are only used for illustrative purposes and cannot be construed as limiting the present invention. In order to better illustrate the following embodiments, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0040] Example 1

[0041] like Figure 1-4As shown, this embodiment provides a ceramic sheet punching fixture, including a punching mold 100, a clamping seat 200 and a connecting structure 300 for connecting a negative pressure device; the punching mold 100 is used to place the ceramic sheet 10, and the punching mold 100 is provided with a positioning through hole 110 that passes through its upper and lower surfaces, and the positioning through hole 110 is used to position the area to be punched of the ceramic sheet 10; the clamping seat 200 includes a limiting component and a base 240, and the base 240 is provided with a hollow area 242, and the limiting component is used to limit the punching mold so that the punching mold 100 covers the upper opening of the hollow area 242, and the positioning through hole 110 is completely exposed in the hollow area 242, the connecting structure 300 is sealed and connected to the lower surface of the base 240, and the connecting structure 300 completely covers the lower opening of the hollow area 242; during the punching operation, the ceramic sheet 10 is adsorbed on the upper surface of the punching mold by the negative pressure generated by the negative pressure device. In a specific implementation, connection holes 244 are provided around the clamping seat 200 to facilitate positioning and connection with an external device through the connection holes 244 .

[0042] During specific use, the negative pressure generated by the negative pressure device makes the ceramic sheet 10 to be punched close to the punching template 100, and at the same time, the positioning through hole 110 of the punching template 100 positions the area to be punched of the ceramic sheet 10, so that the ceramic sheet 10 is stably set on the clamping seat 200, ensuring the accuracy of the punching process; on the other hand, the negative pressure generated by the negative pressure device also makes the ceramic dust generated in the punching process pass through the positioning through hole 110, the hollow area 242, and the connecting structure 300 in turn, and then is extracted from the ceramic sheet punching clamp by the negative pressure device, thereby achieving the purpose of efficient dust recovery.

[0043] refer to Figure 5 The surface of the base 240 is provided with an embedding groove 243 for embedding the punching mold 100 , the hollow area 242 is arranged in the embedding groove 243 , and an embedding groove reserved portion 2431 is reserved between the hollow area 242 and the surrounding edges of the embedding groove 243 .

[0044] It can be understood that the punching mold 100 plays a certain limiting role through the embedding groove 243, and the cooperation with the limiting component can improve the stability of the punching mold 100 and the ceramic sheet 10 when they are positioned in the hollow area 242. In addition, by leaving embedded groove reserved parts 2431 on the edges around the hollow area 242 and the embedded groove 243, it can be ensured that the punching mold 100 completely covers the hollow area 242, so that when the negative pressure device generates negative pressure, the punching mold 100 and the ceramic sheet 10 can be tightly covered The upper opening of the hollow area 242 can be avoided due to the gap between the punching mold 100 and the hollow area 242. Leakage caused by.

[0045] like Figure 4-5As shown, the embedding groove 243 is a "C"-shaped groove. The opening of the "C"-shaped groove is provided on one side of the base 240. There is a reserved part 241 of the base surface between the "C"-shaped groove and the surface edge of the base 240. During assembly, the punching die piece 100 can be conveniently introduced into the embedding groove 243 through the opening of the "C"-shaped groove, and the reserved part 241 of the base surface is used to set necessary components such as the limiting component.

[0046] Specifically, referring to Figure 5 , stepped structures 2432 are provided on both horizontal sides of the "C"-shaped groove. A clamping groove 120 that cooperates with the stepped structure 2432 is provided on the lower surface of the punching die piece. The vertical side of the "C"-shaped groove is used to abut against one side surface of the punching die piece 100.

[0047] During specific implementation, in combination with Figure 4 for understanding, the cooperation between the stepped structure 2432 and the clamping groove 120 of the punching die piece 100 provides reliable guiding ability for installing the punching die piece 100 into the embedding groove 243 on the one hand, and improves the ability of the embedding groove 243 to restrict the movement of the punching die piece 100 on the other hand. In addition, the vertical side of the "C"-shaped groove blocks the punching die piece 100 and can limit the forward movement of the punching die piece 100, and also simply positions the punching die piece 100.

[0048] Referring to Figure 1-2 and 4-5, the limiting component includes a horizontal cover plate 210 and a vertical cover plate 220. The horizontal cover plate 210 is provided on the reserved part 241 of the base surface corresponding to one of the horizontal sides of the "C"-shaped groove, and the vertical cover plate 220 is provided on the reserved part 241 of the base surface corresponding to the vertical side of the "C"-shaped groove. Both the horizontal cover plate 210 and the vertical cover plate 220 cover at least a part of the punching die piece 100.

[0049] During specific implementation, the horizontal cover plate 210 and the vertical cover plate 220 respectively cover a part of two adjacent right-angle sides of the punching die piece 100, so as to reliably limit the movement of the punching template in its own thickness direction. At the same time, referring to Figure 2 , a right-angle positioning structure is formed on the surface of the punching die piece 100 by the inner sides of the horizontal cover plate 210 and the vertical cover plate 220. Since the ceramic sheet 10 is usually rectangular, when the ceramic sheet 10 is placed on the punching die piece 100, by abutting the two adjacent right-angle sides of the ceramic sheet 10 against the inner sides of the horizontal cover plate 210 and the vertical cover plate 220 respectively, the position between the ceramic sheet 10 and the punching die piece 100 can be positioned.

[0050] Such as Figure 1-2As shown in Fig. 4, in order to improve the limiting ability of the punching die plate 100, the limiting component includes a detachable longitudinal pressing plate 230. The longitudinal pressing plate 230 is used to press down the punching die plate. When the longitudinal pressing plate 230 presses down the punching die plate, it is closely attached to the reserved part 2431 of the embedding groove between the opening of the "C"-shaped groove and the hollow area 242.

[0051] When the punching die plate 100 is installed in the embedding groove 243, the front side of the punching die plate 100 abuts against the longitudinal side of the "C"-shaped groove, and the rear side of the punching die plate 100 is pressed down on the reserved part 2431 of the embedding groove by the longitudinal pressing plate 230. Specifically, the longitudinal pressing plate 230 and the reserved part 2431 of the embedding groove can be detachably and fixedly connected through external fixing parts. Specifically, referring to Figure 4 、 5 , a positioning hole 231 is formed on the longitudinal pressing plate 230, and a matching hole position 2433 matching with the positioning hole 231 is provided on the reserved part 2431 of the embedding groove. By arranging a fixing part between the positioning hole 231 and the matching hole position 2433, the positioning connection between the longitudinal pressing plate 230 and the base 240 can be realized. At this time, the longitudinal pressing plate 230 plays a limiting role in the movement of the punching die plate 100 in its own thickness direction. The longitudinal pressing plate 230 and the longitudinal side of the "C"-shaped groove jointly play a limiting role in the front-back direction movement of the punching die plate 100. The two transverse sides of the "C"-shaped groove play a limiting role in the up-down direction movement of the punching die plate 100. Thus, the movement of the punching die plate 100 in three-dimensional space is restricted, so that the punching die plate 100 is stably positioned at the upper opening of the hollow area 242. When the ceramic sheet 10 is adsorbed and positioned on the punching die plate 100, an accurate punching operation can be carried out.

[0052] As Figure 3-4 shown, the connection structure 300 includes a dust filtering component 310 and a bottom plate connection component 320 arranged up and down. The dust filtering component 310 is hermetically connected to the base 240 and the dust filtering component 310 completely covers the lower opening of the hollow area 242. The dust filtering component 310 and the bottom plate connection component 320 are hermetically connected. The connection component is provided with an interface 321 for connecting to a negative pressure device. During specific implementation, in order to ensure the sealing performance, a first sealing ring 330 is provided between the dust filtering component 310 and the base 240, and a second sealing ring 340 is provided between the dust filtering component 310 and the bottom plate connection component 320. Based on the sealing rings, the sealing performance of the connection structure 300 itself and with the clamping seat 200 is improved, and the structure is simple.

[0053] When punching holes in the ceramic sheet 10, the dust filter component 310 blocks large particles of ceramic dust in the area between the dust filter component 310 and the base 240, and small particles of ceramic dust can smoothly pass through the dust filter component and continue to be pulled out of the ceramic sheet punching fixture through the interface 321 of the connecting component, thereby avoiding potential blockage of the interface 321 by large particles of ceramic dust. The dust filter component 310 and the base 240, as well as the dust filter component 310 and the bottom plate connecting component 320 are all detachably connected, so as to facilitate the cleaning of ceramic dust accumulated in the dust filter component 310 or the bottom plate connecting component 320.

[0054] refer to Figure 4 The dust filtering component is a filter plate, and a plurality of micropores 311 penetrating the upper and lower surfaces of the filter plate are provided in the middle of the filter plate. It can be understood that the micropores 311 provided in the middle of the filter plate are used to filter large particles of ceramic dust. Space is reserved around the filter plate, which can be used for sealing connection with the lower surface of the base 240, so that it is easy to completely cover the lower opening of the hollow area 242, and the multi-micropore 311 structure can ensure that the connection structure 300 and the clamping seat 200 have good gas flow capacity, so that the negative pressure generated by the negative pressure device is sufficient to stably adsorb the ceramic sheet 10 on the perforated mold 100 and fully extract the ceramic dust.

[0055] like Figure 4 As shown, a cavity 130 is provided on the surface of the punching die 100, and the cavity 130 at least exposes a part of itself when the limiting assembly limits the punching die. Figure 2 When the punching die 100 is limited on the clamping seat 200, the cavity 130 is not covered by the limiting component. When the punching die 100 needs to be removed from the clamping seat 200, the cavity 130 can be pressed by fingers or other auxiliary mechanical components to increase the force points between the punching die 100 and the punching die 100, thereby improving the efficiency of the punching die 100 entering and exiting the clamping seat 200. In addition, the positioning through holes 110 are a plurality of long strip through holes. The punching area of ​​the ceramic sheet 10 is usually a rectangular area in the middle. The long strip through holes on the punching die 100 are convenient for corresponding to the pores on the ceramic sheet 10 that are in the same straight line. It is easy to understand that a plurality of long strip through holes are sufficient to locate the rectangular area to be punched of the ceramic sheet 10, thereby reducing the amount of holes opened in the punching die 100 and reducing the difficulty of setting the positioning through holes 110.

[0056] The method of using the ceramic sheet punching fixture of the utility model is as follows: Figure 1-5, assemble the perforated die 100 into the embedding groove 243 and make the perforated die 100 completely cover the upper opening of the hollow area 242, press the longitudinal pressing plate 230 downward on the rear of the perforated die 100, at this time, the longitudinal cover plate 220 and the transverse cover plate 210 respectively cover the outer edge of the adjacent pair of right-angle sides of the perforated die 100, and the positioning through hole 110 of the perforated die 100 is completely exposed within the range of the hollow area 242, place the ceramic sheet 10 on the perforated die 100, and through the right-angle positioning structure formed by the longitudinal cover plate 220 and the transverse cover plate 210 The outer sides of a pair of adjacent right-angled sides of the ceramic sheet 10 are fitted and positioned, and then the interface 321 of the bottom plate connecting component 320 is connected to the negative pressure device, and the negative pressure device is started. The negative pressure generated makes the ceramic sheet 10 tightly adsorbed on the punching mold 100. At this time, the upper surface of the ceramic sheet 10 is punched. Under the action of negative pressure, the dust generated by the ceramic sheet 10 passes through the punching mold 100, the hollow area 242, the dust filtering component 310 and the bottom plate connecting component 320 from top to bottom, thereby achieving the purpose of fully recovering the ceramic dust.

[0057] Obviously, the above embodiments of the utility model are only examples for clearly explaining the technical solution of the utility model, and are not intended to limit the specific implementation methods of the utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the claims of the utility model shall be included in the protection scope of the claims of the utility model.

Claims

1. A ceramic sheet punching fixture, characterized in that: It includes a punching die plate, a clamping seat, and a connection structure for connecting a negative pressure device; The punching die plate is used for placing a ceramic sheet. The punching die plate is provided with a positioning through hole penetrating its upper and lower surfaces, and the positioning through hole is used for positioning the area to be punched of the ceramic sheet; The clamping seat includes a limiting component and a base. The base is provided with a hollow area. The limiting component is used for limiting the punching die plate so that the punching die plate covers the upper opening of the hollow area, and the positioning through hole is completely exposed in the hollow area. The connection structure is hermetically connected to the lower surface of the base, and the connection structure completely covers the lower opening of the hollow area; Wherein, when punching the ceramic sheet, the upper surface of the punching die plate is adsorbed by the negative pressure generated by the negative pressure device.

2. The ceramic sheet punching fixture according to claim 1, characterized in that: The surface of the base is provided with an embedding groove for embedding the punching die plate. The hollow area is arranged in the embedding groove, and an embedding groove reserved part is left between the hollow area and the four peripheral edges of the embedding groove.

3. The ceramic sheet punching fixture according to claim 2, characterized in that: The embedding groove is a "C"-shaped groove, and the opening of the "C"-shaped groove is arranged on one side of the base. A base surface reserved part is left between the "C"-shaped groove and the surface edge of the base.

4. The ceramic sheet punching fixture according to claim 3, characterized in that: Step structures are arranged on both transverse sides of the "C"-shaped groove, and a clamping groove matched with the step structure is arranged on the lower surface of the punching die plate. The longitudinal side of the "C"-shaped groove is used for abutting against one side surface of the punching die plate.

5. The ceramic sheet punching fixture according to claim 4, characterized in that: The limiting component includes a transverse cover plate and a longitudinal cover plate. The transverse cover plate is arranged on the base surface reserved part corresponding to one transverse side of the "C"-shaped groove, and the longitudinal cover plate is arranged on the base surface reserved part corresponding to the longitudinal side of the "C"-shaped groove. Both the transverse cover plate and the longitudinal cover plate cover at least a part of the punching die plate.

6. The ceramic sheet punching fixture according to any one of claims 3 to 5, characterized in that: The limiting component includes a detachable longitudinal pressing plate, and the longitudinal pressing plate is used for pressing down the punching die plate. When the longitudinal pressing plate presses down the punching die plate, it is closely attached to the embedding groove reserved part between the opening of the "C"-shaped groove and the hollow area.

7. The ceramic sheet punching fixture according to any one of claims 1 to 5, characterized in that: The connection structure includes a dust filtering component and a bottom plate connection component arranged up and down. The dust filtering component is hermetically connected to the base and completely covers the lower opening of the hollow area. The dust filtering component and the bottom plate connection component are hermetically connected, and the connection component is provided with an interface for connecting to a negative pressure device.

8. The ceramic sheet punching fixture according to claim 7, characterized in that: The dust filtering component is a filter plate, and a plurality of micropores penetrating its upper and lower surfaces are arranged in the middle of the filter plate.

9. The ceramic sheet punching fixture according to claim 7, characterized in that: A sealing ring is arranged between the dust filtering component and the base; and / or, a sealing ring is arranged between the dust filtering component and the bottom plate connection component.

10. The ceramic sheet punching fixture according to any one of claims 1-5, 8-9, characterized in that: A concave cavity is arranged on the surface of the punching die plate, and at least a part of the concave cavity is exposed when the limiting component limits the punching die plate; and / or, the positioning through hole is a plurality of strip-shaped through holes; and / or, connection holes are arranged around the clamping seat.

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