CN217748876U - Spacing tool and cross cutting equipment - Google Patents

Abstract

The utility model discloses a spacing tool and cross cutting equipment. The limiting jig is used for limiting the position of a material belt and comprises a bottom plate and a cover plate, wherein the bottom plate is provided with first grooves which are arranged on two sides of the bottom plate in parallel; the cover plates are arranged on two sides of the bottom plate in parallel, the cover plates are correspondingly provided with second grooves, and the second grooves penetrate through the cover plates; the gap is formed between the cover plate and the bottom plate, the gap can at least accommodate the insertion of the edge of the material belt, the projection parts of the first groove and the second groove are overlapped along the direction from the cover plate to the bottom plate, and the cover plate can move relative to the bottom plate so as to adjust the length of the projection overlapped part of the first groove and the second groove in the second direction. The utility model discloses a spacing tool can adjust according to the interval of the locating hole on the material area, makes the drift can pass the locating hole on the material area through first recess and second recess, has better suitability.

Description

Spacing tool and cross cutting equipment

Technical Field

The utility model belongs to the technical field of the cross cutting processing and specifically relates to a design spacing tool and cross cutting equipment.

Background

The cutting die moves along the vertical direction when die cutting, drives the material area easily and follows the cutting die and take place the removal of vertical direction, and then leads to the material area position skew to appear. For preventing the material area from the removal of direction about appearing in the course of working, among the conventional art, tailor spacing tool by hand according to the specification in material area, in order to carry on spacingly to the material area, need walk the both sides border department of material direction at the material area and all set up spacing tool, need the spacing tool that tailors by hand more than two promptly at least. And in order to ensure the repeated positioning precision of die cutting, the edges of the material belts are provided with positioning holes, so that the limiting jig also needs to avoid the positioning holes. Because there is the manual error of tailorring in every spacing tool, and there is positioning error in the locating position of every spacing tool, consequently influences the repeated positioning accuracy in material area easily or causes the skew in material area for the product waste material rate is higher. In the correlation technique, through the fashioned sheet metal structure of machining formation for realize the spacing in material area, and then need not the manual work and tailor, nevertheless because the interval between the locating hole in different material areas is inconsistent, spacing tool can't change according to the interval of locating hole, leads to the material area of different specifications to need the spacing tool of customization different specifications, and production input is great.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a spacing tool can adjust according to the interval of the locating hole on the material area, makes the drift can pass the locating hole on the material area through first recess and second recess, has better suitability.

The utility model discloses still provide a cross cutting equipment with above-mentioned spacing tool.

According to the utility model discloses a spacing tool of first aspect embodiment for the position in restriction material area, include:

the material feeding direction of the material belt is set to be a first direction, a second direction is set to be perpendicular to the first direction and parallel to a horizontal plane, the first grooves are arranged on two sides of the bottom plate in parallel along the first direction, and the length direction of the first grooves is parallel to the second direction;

the two cover plates are arranged on two sides of the bottom plate in parallel along the first direction, second grooves are correspondingly arranged on the cover plates, the length direction of each second groove is parallel to the second direction, and the second grooves penetrate through the cover plates;

the cover plate and the bottom plate are provided with a gap, the gap can at least accommodate the insertion of the edge of the material belt, the projection parts of the first groove and the second groove are overlapped along the direction from the cover plate to the bottom plate, and the cover plate can move relative to the bottom plate along the second direction so as to adjust the length of the overlapped part of the projection parts of the first groove and the second groove in the second direction.

According to the utility model discloses spacing tool has following beneficial effect at least: there is the clearance between apron and the bottom plate, the border that can hold the material area at least inserts, at the cross cutting in-process, upwards the in-process of withdrawing after the cutting die is die-cut, the material area is because both sides receive the apron to block, can't follow the cutting die rebound, and the apron can remove for the bottom plate, and then the interval of adjustment apron, can make the projected overlap portion of first recess and second recess increase or reduce, and then can make the drift pass through first recess and second recess, and pass the locating hole in material area.

According to some embodiments of the utility model, the apron is provided with first spacing portion, the bottom plate is provided with the spacing portion of second, the apron with the bottom plate passes through first spacing portion with the spacing portion of second is connected, two interval between the apron can pass through first spacing portion with the spacing portion of second is adjusted.

According to some embodiments of the utility model, first spacing portion is the third recess, the spacing portion of second is first spacing hole, spacing tool still includes the screw, first spacing hole the third recess with screw cooperation restriction the apron for the removal of bottom plate, wherein, the third recess runs through the apron, the length direction of third recess is followed the second direction sets up.

According to some embodiments of the utility model, spacing tool includes support piece, the support piece both sides respectively with the apron with the bottom plate butt, so that the bottom plate with exist between the apron the clearance, support piece is detachable connection.

According to some embodiments of the invention, the cover plate comprises a first support portion, which can be in abutment with the base plate the cover plate and the gap is formed between the base plates.

According to some embodiments of the present invention, along the second direction, the both ends of bottom plate are provided with the fourth recess respectively, the length direction of fourth recess with the first direction is parallel, first supporting part with the bottom plate butt in the fourth recess.

According to some embodiments of the invention, the bottom plate comprises a second support portion, which abuts against the cover plate, the gap being formed between the cover plate and the bottom plate.

According to some embodiments of the present invention, the end of the first groove close to the material strip is set as a first end, the end far away from the material strip is set as a second end, and the width of the first groove gradually increases along the direction from the first end to the second end; and setting one end, close to the material belt, of the second groove to be a third end, keeping away from one end, far away from the material belt, of the second groove to be a fourth end, and gradually reducing the groove width of the first groove along the direction from the third end to the fourth end.

According to the utility model discloses a some embodiments, first recess the first end is the circular arc section, the second recess the fourth end is the circular arc section, follows the apron extremely the bottom plate direction, first end with the projected overlap portion of fourth end can inject circularly.

According to the utility model discloses a die cutting equipment of second aspect embodiment includes:

the limiting jig in any one of the above embodiments;

the die cutting machine, spacing tool set up in on the die cutting machine.

According to the utility model discloses cross cutting equipment has following beneficial effect at least: through the spacing tool of this kind of fashioned, need not rethread manual clipping spacing tool, greatly improved the efficiency and the precision of processing. On the other hand, this spacing tool can be applicable to the material area of multiple specification, and then has reduced the number of times of changing spacing tool, has improved the efficiency of processing.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The invention will be further described with reference to the following drawings and examples, in which:

fig. 1 is a schematic view of a limiting jig according to an embodiment of the present invention;

fig. 2 is a schematic view of another angle of the limiting jig according to the embodiment of the present invention;

FIG. 3 is a schematic view of a base plate according to an embodiment of the present invention;

fig. 4 is a schematic structural view of a limiting jig according to an embodiment of the present invention;

fig. 5 is another schematic structural view of the limiting jig according to the embodiment of the present invention;

fig. 6 is another schematic structural diagram of a limiting jig according to an embodiment of the present invention.

Reference numerals:

the base plate 100, the first groove 110, the first end 111, the second end 112, the second position-limiting portion 120, the first position-limiting hole 130, the fourth groove 140, the cover plate 200, the second groove 210, the third end 211, the fourth end 212, the first position-limiting portion 220, the third groove 230, the first supporting portion 240, the gap 300, the screw 310, the supporting member 320, the material tape 400, the positioning hole 410, the first direction 510, and the second direction 520.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the directional descriptions, such as the directions or positional relationships indicated by upper, lower, front, rear, left, right, etc., are based on the directions or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but not for indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means is one or more, a plurality of means is two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

In the description of the present invention, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The die cutting process is a cutting process, and paper products or other products can be cut by the die with a designed pattern in advance, so that the shape of the products is not limited to straight edges and right angles. The traditional die cutting production is based on the pattern combination die cutting plate required by the product design, under the action of pressure, the printed matter or other plate-shaped blanks are rolled and cut into the required shape or cutting mark, and the die cutting plate is widely applied to the later processing of materials such as rubber, double-sided adhesive tape, plastic, metal thin strips and the like.

At present, the structure of the die-cutting processing product gradually develops towards the direction of multi-layer and multi-structure. In some die-cutting processing products, a die-cutting material belt needs to be punched for multiple times, and after each punching, a cutting die needs to be replaced and then the next punching is carried out. After the last punching is finished, when the next punching is carried out, the punch is inserted into the material belt positioning hole of the last punching, so that the deviation rectifying function is realized to a certain degree, and the dislocation of punched patterns is prevented. In the correlation technique, through the fashioned sheet metal structure of machining formation for realize the spacing in material area, replaced the spacing tool of manual tailorring, nevertheless because the interval of the locating hole of the both sides in different material areas is inconsistent, spacing tool can't adjust according to the locating hole interval of difference, leads to the material area of different specifications to need the spacing tool of customization different specifications, and the production input is great.

As shown in fig. 1 and fig. 2, an embodiment of the first aspect of the present invention provides a limiting jig for preventing the material strip 400 (the dotted line in fig. 2 represents the material strip 400) from shifting during the processing process, including a bottom plate 100 and two cover plates 200. The feeding direction of the material belt 400 is set to be a first direction 510, and a second direction 520 is set to be perpendicular to the first direction 510 and parallel to a horizontal plane. As shown in fig. 3, the base plate 100 is provided with at least two first grooves 110, and the first grooves 110 are juxtaposed on both sides of the base plate 100 along the first direction 510. The length direction of the first groove 110 is parallel to the second direction 520, and for convenience of description, an end of the first groove 110 close to the tape 400 is set as the first end 111, and an end of the first groove 110 far from the tape 400 is set as the second end 112.

As shown in fig. 2, two cover plates 200 are disposed on two sides of the bottom plate 100 in parallel along a first direction 510, and second grooves 210 are correspondingly disposed on the cover plates 200, the length direction of the second grooves 210 is parallel to a second direction 520, and furthermore, along the length direction, the extension line of the axis of the second grooves 210 should coincide with the extension line of the axis of the first grooves 110, so that the projections of the first grooves 110 and the second grooves 210 in the vertical direction can partially overlap. The second groove 210 penetrates the cap plate 200 for passage of the punch. For convenience of description, an end of the second groove 210 close to the tape 400 is set as a third end 211, and an end of the second groove 210 far from the tape 400 is set as a fourth end 212. In this embodiment, as shown in fig. 1 and fig. 2, four first grooves 110 are provided on the bottom plate 100, and two second grooves 210 are correspondingly provided on each cover plate 200, in other embodiments, the number of the first grooves 110 and the number of the second grooves 210 may be adjusted according to actual processing requirements.

As shown in fig. 1 and 4, a gap 300 exists between the cover plate 200 and the bottom plate 100, the gap 300 can at least accommodate the insertion of the edge of the material tape 400, so that the edge of the material tape 400 can be blocked by the cover plate 200, and during the die cutting process, during the upward withdrawing process after the die cutting by the cutting die, the material tape 400 cannot move upward along with the cutting die because both sides are blocked by the cover plate 200.

The direction from the cover plate 200 to the bottom plate 100 is set to be a third direction, and the projections of the first groove 110 and the second groove 210 are partially overlapped along the third direction, and when the tape 400 is placed on the limiting jig, as shown in fig. 2, the projection of the positioning hole 410 of the tape 400 should be located in the partially overlapped area. The punch can pass through the first groove 110 and the second groove 210, and then the punch can pass through the material belt 400 through the positioning hole 410, whether the positioning hole 410 is repeatedly punched by the punch or not can be judged, whether the punching stroke of the cutting die is accurately positioned or not can be judged, it can be understood that after punching is completed, whether the positioning hole 410 is consistent with the shape of the unprocessed positioning hole 410 or not is checked, if the positioning hole 410 is consistent, the positioning is accurate, if the edge of the positioning hole 410 has a trace of secondary punching, the material belt 400 is deviated, and the adjustment is timely performed.

Along the second direction 520, the cover plate 200 can move relative to the base plate 100, and thus the distance between the cover plate 200 is adjusted, so as to adjust the length of the overlapping portion of the projections of the first groove 110 and the second groove 210 in the second direction 520. For example, when the distance between the positioning holes 410 on the tape 400 is increased, the two cover plates 200 are adjusted to move away from each other, so that the distance between the cover plates 200 is increased, and further, the projection overlapping portion of the first groove 110 and the second groove 210 in the third direction is increased, so that the positioning holes 410 of the tape 400 are still located in the projection overlapping portion. More specifically, the adjustment is a stepless adjustment, i.e., can be adjusted to any one of a maximum value and a minimum value.

Based on the above, the use of spacing tool does:

1. the bottom plate 100 of the limiting jig is fixed on the die-cutting machine in a mode not limited to threaded connection, magnetic adsorption and the like.

2. The tape 400 is laid on the bottom plate 100, and the distance between the cover plates 200 is preliminarily adjusted according to the distance between the positioning holes 410 of the tape 400 and is pre-fixed.

3. The die cutting machine is started and the adjusting punch head just passes through the first groove 110 and the second groove 210 at the same time. If the punch cannot pass through the second groove 210 (i.e., the punch hits the cover 200), the gap between the covers 200 is too small, and fine adjustment is required until the punch can pass through the second groove 210. If the punch easily passes through the second groove 210 (i.e. the punch does not contact the edge of the fourth end 212 of the second groove 210), it indicates that the cover plate 200 has an excessively large pitch, and the punch is properly adjusted according to the accuracy requirement of the die cutting.

4. After the distance between the cover plates 200 is adjusted according to the die cutting accuracy, the cover plates 200 and the base plate 100 are fixed. And opening the die cutting machine for punching.

In some embodiments, as shown in fig. 1 and 2, the cover plate 200 is provided with a first position-limiting portion 220, as shown in fig. 3, the base plate 100 is provided with a second position-limiting portion 120, the cover plate 200 and the base plate 100 are connected by the first position-limiting portion 220 and the second position-limiting portion 120, and the distance between the cover plate 200 and the second position-limiting portion 120 can be adjusted by the first position-limiting portion 220 and the second position-limiting portion 120. The fitting of the first position-limiting portion 220 and the second position-limiting portion 120 is not limited to threaded connection, insertion, clamping, etc.

Based on the above embodiment, as shown in fig. 1 and fig. 3, in some further embodiments, the first position-limiting portion 220 is a third groove 230, the second position-limiting portion 120 is a first position-limiting hole 130, the position-limiting jig further includes a screw 310, the first position-limiting hole 130, the third groove 230 and the screw 310 cooperate to limit the movement of the cover plate 200 relative to the base plate 100, wherein the third groove 230 penetrates through the cover plate 200, and the length direction of the third groove 230 is arranged along the second direction 520. The bottom plate 100 and the cover plate 200 are fixed through threaded connection, and the structure is simple and the use is convenient.

In some embodiments, as shown in fig. 4, the limiting jig includes a supporter 320, and two sides of the supporter 320 abut against the cover plate 200 and the base plate 100, respectively, so that a gap 300 exists between the base plate 100 and the cover plate 200, that is, the supporter 320 is located between the cover plate 200 and the base plate 100 in a vertical direction. The supporting pieces 320 are detachably connected, that is, the supporting pieces 320 can be replaced to adapt to the processing of the material strips 400 with different thicknesses, or for the material strips 400 with different die cutting accuracies, the supporting pieces 320 with different heights are selected to control the height of the gap 300 between the cover plate 200 and the bottom plate 100, and when the die cutting accuracy is higher, the height of the gap 300 is adjusted to be smaller, so that the moving margin of the edge of the material strip 400 after being inserted is smaller, and the material strip is not easy to be driven by a cutting die; when the die cutting precision is not high, the height of the clearance 300 which is slightly larger is adjusted to ensure that the edge of the material belt 400 has a certain moving allowance after being inserted, so that the material belt 400 can move quickly. In addition, the spacing between the supports 320 may also be adjusted to accommodate different widths of the strip of material 400.

In some embodiments, as shown in fig. 5, the limiting jig does not additionally provide the supporting member 320, and the first supporting portion 240 is provided on the cover plate 200 instead. The first support 240 is positioned between the base plate 100 and the cover plate 200, the first support 240 and the cover plate 200 are integrally formed, that is, welded, removed from material, or integrally formed, and the first support 240 abuts against the upper surface of the base plate 100, so that the gap 300 can be formed between the cover plate 200 and the base plate 100. In the die-cutting process, generally, the increase or decrease of the distance between the positioning holes 410 on the two sides of the material tape 400 is accompanied by the increase or decrease of the width of the material tape 400, so that the first supporting portions 240 are disposed on the cover plate 200, and when the cover plate 200 is moved, not only the overlapping area of the first groove 110 and the second groove 210 is changed, but also the distance between the first supporting portions 240 on the two sides is changed accordingly. For example, when the width of the tape 400 is decreased and the distance between the positioning holes 410 is decreased, the adjusting cover plates 200 are moved toward each other to decrease the overlapping area between the first groove 110 and the second groove 210, and the projection of the positioning holes 410 is moved into the overlapping area along the third direction, at this time, the distance between the first supporting portions 240 is also decreased, and when the tape 400 is vertically limited, the left and right deviation of the tape 400 can be limited.

Based on the above embodiment, as shown in fig. 1 and fig. 5, in some further embodiments, the two ends of the base plate 100 are respectively provided with a fourth groove 140 along the second direction 520, the length direction of the fourth groove 140 is parallel to the first direction 510, and the first supporting portion 240 and the base plate 100 abut against the fourth groove 140. The provision of the fourth groove 140 enables the cover plate 200 to be quickly positioned to a position where the interval between the cover plates 200 is minimum, i.e., a position where the side surface of the first support part 240 abuts against the side surface of the fourth groove 140. In the manufacturing process of the position limiting jig, a most common positioning hole interval is determined, and the positions of the first groove 110 and the second groove 210 are determined according to the interval, that is, when the cover plate 200 is located at the position with the minimum interval, the projection of the positioning hole 410 is just located at the projection overlapping part of the first groove 110 and the second groove 210 along the third direction. Furthermore, when the material tape 400 with the positioning hole pitch needs to be processed, the punch can just penetrate through the first groove 110 and the second groove 210 only by abutting the side surface of the first supporting portion 240 with the side surface of the fourth groove 140.

In some embodiments, the spacing jig does not additionally provide the supporting member 320, and the second supporting portion is provided on the bottom plate 100 instead. The second support portion is located between the bottom plate 100 and the cover plate 200, the second support portion and the bottom plate 100 are of an integral structure, that is, welded, subjected to material processing, or integrally formed, and the second support portion abuts against the lower surface of the cover plate 200, so that a gap 300 can be formed between the cover plate 200 and the bottom plate 100. The limiting jig is suitable for processing scenes that the width of the material belt 400 is unchanged and the distance between the positioning holes 410 is changed, and can limit the displacement of the material belt 400 in the vertical direction and the left-right direction while realizing positioning.

In some embodiments, as shown in fig. 6 (the dotted line is the first groove 110), the groove width of the first groove 110 gradually increases along the direction from the first end 111 to the second end 112, and the groove width of the first groove 110 gradually decreases along the direction from the third end 211 to the fourth end 212. The first groove 110 and the second groove 210 are oppositely arranged, and then punches with different radius specifications can pass through the first groove 110 and the second groove 210 by adjusting the distance between the cover plates 200.

Based on the above-mentioned embodiment, as shown in fig. 6 (the dotted line is the first groove 110), in some further embodiments, the first end 111 of the first groove 110 is an arc segment, and the fourth end 212 of the second groove 210 is an arc segment, and along the third direction, the projected overlapping portions of the first groove 110 and the second groove 210 can define a circle. That is, when the cover plate 200 is adjusted to the minimum interval, the overlapping portions of the projections of the first and second grooves 110 and 210 in the third direction are rounded to allow the punch to just pass through.

The utility model discloses still provide the cross cutting equipment of the embodiment of second aspect, including spacing tool and the cross cutting machine in above-mentioned arbitrary embodiment, spacing tool sets up on the cross cutting machine. Through the spacing tool of this kind of fashioned, need not rethread manual clipping spacing tool, greatly improved the efficiency and the precision of processing. On the other hand, this spacing tool can be applicable to the material area of multiple specification, and then has reduced the number of times of changing spacing tool, has improved the efficiency of processing.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art. Furthermore, the embodiments of the present invention and features of the embodiments may be combined with each other without conflict.

Claims (10)

1. Spacing tool for the position in restriction material area, its characterized in that includes:

the material belt comprises a bottom plate, a first guide rail and a second guide rail, wherein the bottom plate is provided with at least two first grooves, the material conveying direction of the material belt is set to be a first direction, a second direction is set to be perpendicular to the first direction and parallel to a horizontal plane, the first grooves are arranged on two sides of the bottom plate in parallel along the first direction, and the length direction of the first grooves is parallel to the second direction;

the two cover plates are arranged on two sides of the bottom plate in parallel along the first direction, second grooves are correspondingly arranged on the cover plates, the length direction of each second groove is parallel to the second direction, and the second grooves penetrate through the cover plates;

the cover plate and the bottom plate are provided with a gap, the gap can at least accommodate the insertion of the edge of the material belt, the projection parts of the first groove and the second groove are overlapped along the direction from the cover plate to the bottom plate, and the cover plate can move relative to the bottom plate along the second direction so as to adjust the length of the overlapped part of the projection parts of the first groove and the second groove in the second direction.

2. The limiting jig according to claim 1, wherein the cover plate is provided with a first limiting portion, the bottom plate is provided with a second limiting portion, the cover plate and the bottom plate are connected through the first limiting portion and the second limiting portion, and the distance between the two cover plates can be adjusted through the first limiting portion and the second limiting portion.

3. The limiting jig of claim 2, wherein the first limiting portion is a third groove, the second limiting portion is a first limiting hole, the limiting jig further comprises a screw, the first limiting hole, the third groove and the screw cooperate to limit the movement of the cover plate relative to the base plate, wherein the third groove penetrates through the cover plate, and the length direction of the third groove is arranged along the second direction.

4. The limiting jig according to claim 1, wherein the limiting jig comprises a support member, two sides of the support member are respectively abutted against the cover plate and the bottom plate, so that the gap exists between the bottom plate and the cover plate, and the support member is detachably connected.

5. The limiting jig according to claim 1, wherein the cover plate includes a first support portion, the first support portion is abutted to the bottom plate, and the gap can be formed between the cover plate and the bottom plate.

6. The limiting jig according to claim 5, wherein along the second direction, fourth grooves are respectively formed at two ends of the bottom plate, the length direction of each fourth groove is parallel to the first direction, and the first supporting portion and the bottom plate abut against the fourth grooves.

7. The limiting jig according to claim 1, wherein the bottom plate includes a second support portion abutting against the cover plate, and the gap is formed between the cover plate and the bottom plate.

8. The limiting jig according to claim 1, wherein the end of the first groove close to the material belt is set as a first end, the end far away from the material belt is set as a second end, and the groove width of the first groove is gradually enlarged along the direction from the first end to the second end; setting one end, close to the material belt, of the second groove to be a third end, setting one end, far away from the material belt, of the second groove to be a fourth end, and gradually reducing the groove width of the first groove along the direction from the third end to the fourth end.

9. The limiting jig according to claim 8, wherein the first end of the first groove is an arc section, the fourth end of the second groove is an arc section, and a projection overlapping portion of the first end and the fourth end can define a circle along a direction from the cover plate to the bottom plate.

10. Die cutting apparatus, comprising:

the spacing jig of any one of claims 1 to 9;

the die cutting machine, spacing tool set up in on the die cutting machine.

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