Forward and reverse clamping bridge die for die-cutting rule

Abstract

The invention discloses a die-cutting rule forward and reverse clamping bridge die which comprises a bottom plate assembly, a lower punching needle assembly is arranged in the bottom plate assembly and connected with a first driving device, a guide plate is further arranged above the bottom plate assembly, the guide plate and the bottom plate assembly are arranged in a spaced mode, and an upper punching needle assembly is arranged in the guide plate and connected with a second driving device. The upper punching needle assembly is connected with a second driving device, when the bridge position of the cutter moves to the preset position, the first driving device drives the end of the lower punching needle assembly to stretch out of the bottom plate assembly, and the second driving device drives the end of the upper punching needle assembly to stretch out of the guide plate to punch opposite clamping positions on the two sides of the bridge position. Through the arrangement of the upper punching needle assembly and the lower punching needle assembly, the clamping position is punched on the cutter bridge position, the clamping position is fixedly connected with the die cutting plate, the procedure of manual gluing is omitted, the gluing time is shortened, the labor cost and the material cost are reduced, the installation efficiency is improved, and the die is simple in structure, low in cost, adaptive to an existing production line and high in applicability.

Description

Technical Field

[0001] The invention relates to the technical field of die cutting knives, in particular to a front and back bridge mould of a die cutting knives. Background Art

[0002] The die-cutting rule is also called a die-cutting knife or a creasing knife. It refers to a sheet of material made of steel with a blade on the top for making die-cutting boards. The die-cutting knife is placed on the die-cutting board when in use, so a groove of a preset shape will be cut out on the die-cutting board by laser according to needs for placing the die-cutting knife. In order to prevent the part of the die-cutting board within the cutting range from completely losing connection with the die-cutting board and falling off during laser cutting, intermittent cutting is usually performed according to a preset length during cutting, so as to ensure that the part within the cutting range is connected to the die-cutting board to avoid falling off. The connected part is called the die-cutting board bridge. At the same time, in order to make the die-cutting knife adapt to the groove, a bridge hole adapted to the die-cutting board bridge needs to be opened at the position corresponding to the die-cutting knife. This is the die-cutting knife bridge. The setting of the die-cutting knife bridge can also prevent the die-cutting knife from moving when it is set in the groove; the bridge hole positions of the existing die-cutting knives are all ordinary hole positions. When inserted into the groove of the die-cutting board, in order to prevent the die-cutting knife from falling off, it is also necessary to apply glue along the groove on the die-cutting board so that the die-cutting knife is bonded to the die-cutting board, which results in time-consuming and labor-intensive installation of the die-cutting knife, low installation efficiency and high labor cost.

[0003] Therefore, it is urgent to design a die-cutting knife front and back bridge mold to overcome the above-mentioned deficiencies of one or more prior arts. Summary of the invention

[0004] The technical solution adopted by the present invention to solve the above-mentioned technical problems is: to provide a die-cutting knife positive and negative bridge mold, characterized in that it includes: a base plate assembly, a lower punch needle assembly is arranged in the base plate assembly, the lower punch needle assembly is connected to a first driving device, the first driving device drives the end of the lower punch needle assembly to extend or retract into the base plate assembly, a guide plate is also arranged above the base plate assembly, the guide plate and the base plate assembly are spaced apart for knife material to pass through, an upper punch needle assembly is arranged in the guide plate, the upper punch needle assembly is connected to a second driving device, the second driving device drives the end of the upper punch needle assembly to extend or retract into the guide plate, when the bridge position of the knife material moves to a predetermined position, the first driving device drives the end of the lower punch needle assembly to extend out of the base plate assembly, and the second driving device drives the end of the upper punch needle assembly to extend out of the guide plate to punch out opposite clamping positions on both sides of the bridge position.

[0005] In a preferred embodiment, the bottom plate assembly includes: a base, one end of the base is provided with a recess, a back plate is fixedly provided in the recess, one end of the guide plate is fixedly connected to the base, the top surface of the back plate and the bottom surface of the guide plate are spaced apart, a vertical sliding hole is provided in the back plate, and the lower punch needle assembly is slidably arranged in the vertical sliding hole.

[0006] In a preferred embodiment, a slide groove is further provided in the bottom surface of the back plate, and the slide groove is perpendicular to the vertical slide hole. A lifting member is slidably provided in the slide groove, and a slope inclined toward a first direction is provided on one side of the lifting member. The lower punch needle assembly corresponds to the lifting member, and the bottom end of the lower punch needle assembly contacts the lifting member. The first driving device is connected to one end of the lifting member. Driven by the first driving device, the lifting member lifts the lower punch needle assembly through the slope so that the top end of the lower punch needle assembly extends out of the back plate.

[0007] In a preferred embodiment, the lower punch needle assembly includes: a first punch needle, the first punch needle is located in the vertical sliding hole, the top surface of the first punch needle is provided with an inclined punching surface, and the bottom end of the first punch needle is adapted to the inclined surface.

[0008] In a preferred embodiment, the lower punch needle assembly also includes: a ejection punch needle, which is slidably disposed in the back plate, and the other side of the lifting member is also provided with an inclined surface inclined to a second direction, and the second direction is opposite to the first direction, and the ejection punch needle corresponds to the upper punch needle assembly.

[0009] In a preferred embodiment, at least one lower pin is further provided in the back plate, and the lower pin passes through the lower punch needle assembly, and the lower pin can move up and down in the back plate and the lower punch needle assembly.

[0010] In a preferred embodiment, the top surface of the back plate is located on both sides of the lower punch assembly and is provided with push-down screws respectively, the push-down screws correspond to the lower pin, and a spring is provided at the bottom of the push-down screw, and the spring is in contact with the lower pin.

[0011] In a preferred embodiment, the upper punch needle assembly includes: a blade, which is slidably disposed at one end of the guide plate, a second punch needle is disposed inside the blade, an adjusting screw is disposed on the top of the blade, and the adjusting screw is used to adjust the extension length of the second punch needle. A fixed top screw is also disposed on one side of the blade for fixing the second punch needle, and an avoidance position is also disposed at the bottom end of the blade for the lower punch needle assembly to punch out a positioning position.

[0012] The beneficial effects of the present invention are as follows: the present application realizes punching out a card position on the knife bridge position through the arrangement of the upper punch needle assembly and the lower punch needle assembly, and uses the card position to fix the connection with the die-cutting plate, thereby eliminating the manual gluing process and the gluing time, reducing labor costs and material costs, and improving installation efficiency; the mold structure is simple, the cost is low, it is compatible with existing production lines, and it has strong applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the present invention;

[0014] Figure 2 An exploded view of the present invention;

[0015] Figure 3 It is a schematic diagram of the cooperation between the lower punch needle assembly and the lifting member of the present invention;

[0016] Figure 4 It is a structural schematic diagram of the upper punch needle assembly of the present invention;

[0017] Figure 5 This is a punching state diagram of the present invention.

[0018] In the figure:

[0019] 10. Bottom plate assembly; 101. Base; 102. Concave position; 103. Back plate; 104. Vertical slide hole; 105. Slide groove; 11. Guide plate; 12. Upper punch assembly; 121. Blade; 122. Adjusting screw; 123. Fixed top screw; 124. Second punch; 125. Avoidance position; 13. Lower punch assembly; 131. First punch; 132. Ejection punch; 14. Lower pin; 15. Pressing screw; 16. Spring; 17. First drive device; 18. Knife material; 19. Lifting piece; 191. Inclined surface. DETAILED DESCRIPTION

[0020] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0021] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms, "connection" and "installation" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. In addition, "connection" can be a direct connection or an indirect connection through an intermediate medium. Among them, "fixed" means that they are connected to each other and the relative position relationship after connection remains unchanged. The directional terms mentioned in the embodiments of the present invention, such as "inside", "outside", "top", "bottom", etc., are only reference to the directions of the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0022] In the embodiments of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0023] In the embodiments of the present invention, "and / or" is only a description of the association relationship of the associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0024] References to "one embodiment" or "some embodiments" etc. described in this specification mean that one or more embodiments of the present invention include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the statements "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0025] like Figure 1-Figure 5As shown, the present invention provides a die-cutting knife positive and negative bridge mold, characterized in that it includes: a bottom plate assembly 10, a lower punch assembly 13 is provided in the bottom plate assembly 10, the lower punch assembly 13 is connected to a first driving device 17, the first driving device 17 drives the end of the lower punch assembly 13 to extend or retract the bottom plate assembly 10, a guide plate 11 is also provided above the bottom plate assembly 10, the guide plate 11 and the bottom plate assembly 10 are spaced apart for a knife material 18 to pass through, an upper punch assembly 11 is provided in the guide plate 11, the upper punch assembly 11 is connected to a second driving device, the second driving device drives the end of the upper punch assembly 11 to extend or retract the guide plate 11, when the bridge position of the knife material 18 moves to a predetermined position, the first driving device 17 drives the end of the lower punch assembly 13 to extend out of the bottom plate assembly 10, and the second driving device drives the end of the upper punch assembly 11 to extend out of the guide plate 11 to punch out opposite clamping positions on both sides of the bridge position;

[0026] Specifically, the first drive device 17 and the second drive device can be a motor or a motor plus a screw or a cylinder. The lower punch assembly 13 is connected to the first drive device 17. Under the drive of the first drive device 17, the end of the lower punch assembly 13 extends out of the top surface of the bottom plate assembly 10. The upper punch assembly 11 is similar. When the bridge position of the knife material 18 moves between the lower punch assembly 13 and the upper punch assembly 11, the first drive device 17 drives the end of the lower punch assembly 13 to extend out of the bottom plate assembly 10, and the second drive device drives the upper punch assembly 11 extends out of the guide plate 11 and presses on the knife material 18, and the lower punch needle assembly 13 and the upper punch needle assembly 11 respectively punch out raised clamping positions on the bridge position of the knife material 18, one of the two clamping positions is tilted upward, and the other is tilted downward, and the raised ends of the two clamping positions are located at the same end. When the knife material 18 is cut and inserted into the die-cutting board, the two clamping positions can cooperate with the side walls of the die-cutting board groove to clamp the knife material 18, thereby fixing the knife material 18 to the die-cutting board without manual gluing, reducing labor costs and improving installation efficiency.

[0027] Further, the bottom plate assembly 10 comprises: a base 101, a recess 102 is provided at one end of the base 101, a back plate 103 is fixedly provided in the recess 102, one end of the guide plate 11 is fixedly connected to the base 101, the top surface of the back plate 103 is spaced from the bottom surface of the guide plate 11, a vertical sliding hole 104 is provided in the back plate 103, and the lower punch assembly 13 is slidably provided in the vertical sliding hole 104;

[0028] Specifically, a recess 102 is provided on one side of the base 101, and a back plate 103 is provided in the recess 102. The guide plate 11 is located above the base 101 and the back plate 103, and the back plate 103 and the guide plate 11 are spaced apart to allow the knife material 18 to pass through. A vertical slide hole 104 corresponding to the height direction of the back plate 103 is provided in the back plate 103, and the lower punch needle assembly 13 is slidably arranged in the vertical slide hole 104. At this time, the first drive device 17 can be located below the lower punch needle assembly 13, and can directly drive the end of the lower punch needle assembly 13 to extend out of the back plate 103 to perform positioning punching; wherein, the spacing between the back plate 103 and the guide plate 11 can also allow the knife material 18 to be taken out through the gap after the material is stuck.

[0029] Further, in the present embodiment, a slide groove 105 is further provided in the bottom surface of the back plate 103, the slide groove 105 is perpendicular to the vertical slide hole 104, a lifting member 19 is slidably provided in the slide groove 105, one side of the lifting member 19 is provided with an inclined surface 191 inclined in a first direction, the lower punch needle assembly 13 corresponds to the lifting member 19, and the bottom end of the lower punch needle assembly 13 contacts the lifting member 19, the first driving device 17 is connected to one end of the lifting member 19, and the lifting member 19, driven by the first driving device 17, lifts the lower punch needle assembly 13 through the inclined surface 191, so that the top end of the lower punch needle assembly 13 extends out of the back plate 103;

[0030] Specifically, a slide groove 105 is provided in the bottom surface of the back plate 103 along the length of the back plate 103, and a lifting member 19 is slidably provided in the slide groove 105. One side of the lifting member 19 is provided with an inclined surface 191 inclined in the first direction. The lifting member 19 corresponds to the lower punch needle assembly 13, and the bottom end of the lower punch needle assembly 13 contacts the inclined surface 191. One end of the lifting member 19 is connected to the first driving device 17, and the first driving device 17 drives the lifting member 19 to move in the slide groove 105. The lifting member 19 promotes the lower punch needle assembly 13 to move. The assembly 13 is lifted up, so that the end of the lower punch assembly 13 extends out of the back plate 103. When the punching is completed, the first drive device 17 drives the lifting member 19 to move back. At this time, the lower punch assembly 13 will fall down by itself under gravity after losing the support of the inclined surface 191 of the lifting member 19, so that the end of the lower punch assembly 13 is retracted into the back plate 103. In this way, due to the setting of the lifting member 19, the first drive device 17 can be located at one end of the base plate assembly 10, not below the base plate assembly 10, so as to adapt to the existing production line and facilitate the installation of the bridge mold.

[0031] Furthermore, the lower punch assembly 13 includes: a first punch 131, the first punch 131 is located in the vertical sliding hole 104, the top surface of the first punch 131 is provided with an inclined punching surface, and the bottom end of the first punch 131 is adapted to the inclined surface 191;

[0032] Specifically, the lower punch needle assembly 13 includes: a first punch needle 131, which is slidably set in the vertical sliding hole 104, and the bottom end of the first punch needle 131 is adapted to fit with the inclined surface 191 of the lifting member 19. In order to facilitate punching out a position for the knife material 18, an inclined punching surface is provided at the top end of the first punch needle 131. The inclined punching surface is used to punch out a position with the same inclination and direction in the bridge position of the knife material 18, and one end of the position is still connected to the knife material 18 and will not be completely cut off.

[0033] Furthermore, the lower punch needle assembly 13 further includes: a material ejection punch needle 132, the material ejection punch needle 132 is slidably disposed in the back plate 103, and the other side of the lifting member 19 is further provided with an inclined surface 191 inclined in a second direction, the second direction is opposite to the first direction, and the material ejection punch needle 132 corresponds to the upper punch needle assembly 11;

[0034] Specifically, since the knife material 18 needs to be transported to the subsequent process after punching out the position, and the position punched out by the upper punch needle assembly 11 is downward, in order to avoid the downward position from getting stuck with the back plate 103 during transportation, the lower punch needle assembly 13 also includes: a material ejection punch needle 132, which is also slidably arranged in the back plate 103 and can slide vertically in the back plate 103. In order to drive the movement of the ejection punch needle 132, an inclined surface 191 inclined to the second direction is provided on the other side of the lifting member 19, wherein the first direction is opposite to the second direction, and the ejection punch needle 1 The bottom end of the lifting member 19 contacts the inclined surface 191, so that when the lifting member 19 is driven by the first driving device 17 to move, the movement of the first punch needle 131 is opposite to the movement of the ejecting punch needle 132, that is, when the end of the first punch needle 131 is extended, the end of the ejecting punch needle 132 is retracted. When the first punch needle 131 completes the cutting, during the retreat of the lifting member 19, the ejecting punch needle 132 will be lifted to extend its end, and the downward clamping position will be lifted so that the clamping position is higher than the upper surface of the back plate 103, thereby avoiding the clamping position from being stuck with the back plate 103, so as to ensure the smooth transportation of the knife material 18.

[0035] Furthermore, at least one lower pin 14 is also provided in the back plate 103, and the lower pin 14 passes through the lower punch assembly 13, and the lower pin 14 can move up and down in the back plate 103 and the lower punch assembly 13;

[0036] Further, the top surface of the back plate 103 is located on both sides of the lower punch assembly 13 and is respectively provided with pressing screws 15, the pressing screws 15 correspond to the lower pin 14, and the bottom of the pressing screw 15 is provided with a spring 16, and the spring 16 is in contact with the lower pin 14;

[0037] Specifically, although the first punch needle 131 can fall down by itself due to its own gravity after losing the squeezing of the lifting member 19, in order to prevent the first punch needle 131 from getting stuck, at least one lower pin 14 is also penetrated in the back plate 103, and the lower pin 14 passes through the first punch needle 131. The lower pin 14 can move up and down in the back plate 103 and the lower pin 14, and at the same time, downward pressing screws 15 are fixed on both sides of the lower punch needle assembly 13, and a spring 16 is connected to the bottom end of the downward pressing screw 15, and the other end of the spring 16 contacts with the lower pin 14. The lower pin 14 will press the lower pin 14 downward under the action of the spring 16, and the lower pin 14 will press the first punch needle 131 to fit with the inclined surface 191 of the lifting member 19. With the cooperation of the spring 16 and the lower pin 14, the first punch needle 131 can be prevented from getting stuck in the vertical sliding hole 104.

[0038] It should be pointed out that since a ejection punch needle 132 is also provided, in order to prevent the ejection punch needle 132 from getting stuck, two lower pins 14 are provided, one passes through the first punch needle 131, and the other passes through the ejection punch needle 132, and a pressing screw 15 and a spring 16 are also provided, so that the bottom end of the ejection punch needle 132 is always in contact with the lifting piece 19.

[0039] Further, the upper punch assembly 11 includes: a blade 121, the blade 121 is slidably arranged at one end of the guide plate 11, a second punch 124 is arranged in the blade 121, an adjusting screw 122 is arranged at the top of the blade 121, the adjusting screw 122 is used to adjust the extension length of the second punch 124, a fixed top screw 123 is also arranged on one side of the blade 121, which is used to fix the second punch 124, and an avoidance position 125 is also arranged at the bottom end of the blade 121, so that the lower punch assembly 13 can punch out a position;

[0040] Specifically, the upper punch needle assembly 11 includes: a blade 121, which is slidably arranged in the guide plate 11 and can slide vertically in the guide plate 11. The top of the blade 121 is connected to the second driving device, and a second punch needle 124 is installed in the blade 121. The tail end of the second punch needle 124 is also connected to an adjusting screw 122, and the adjusting screw 122 is used to adjust the length of the head end of the second punch needle 124 extending out of the blade 121, and is adjusted according to the punching depth; a fixed top screw 123 is also provided on one side of the blade 121, and the fixed top screw 123 is used to fix the second punch needle 124 after the second punch needle 124 has adjusted the extension length to prevent the second punch needle 124 from being displaced; when punching is required, the second driving device will drive the blade 121 to move, so that it presses on the knife material 18, and at the same time through the first The second punch needle 124 punches out a position on the knife material 18, and at the same time, the first drive device 17 drives the first punch needle 131 to extend out of the back plate 103, and synchronously punches out a position for the knife material 18, wherein the second punch needle 124 corresponds to the ejection punch needle 132. Due to the setting of the ejection punch needle 132 and its being in a descending state when the first punch needle 131 is extended, the hole position of the ejection punch needle 132 is used as an avoidance hole, so that the second punch needle 124 can smoothly punch out a position, but the extension of the first punch needle 131 will push against the blade 121. In order to enable the first punch needle 131 to punch out a position, an avoidance hole is opened at a position corresponding to the first punch needle 131 on the blade 121. When the first punch needle 131 is extended, the end of the first punch needle 131 extends into the avoidance hole to smoothly punch out a position.

[0041] To summarize, the present application realizes punching out a slot on the knife bridge position through the setting of the upper punch needle assembly and the lower punch needle assembly, and uses the slot to fix the connection with the die-cutting plate, thereby eliminating the manual gluing process and gluing time, reducing labor costs and material costs, and improving installation efficiency. The mold structure is simple, the cost is low, it is compatible with existing production lines, and it has strong applicability.

[0042] The present invention is not limited to what is described in the specification and implementation modes, and therefore additional advantages and modifications can be easily realized by those skilled in the art. Therefore, without departing from the spirit and scope of the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details, representative devices, and illustrative examples shown and described herein.

Claims

1. A die-cutting knife front and back bridge mold, characterized in that: include: A base plate assembly, wherein a lower punch assembly is provided inside the base plate assembly, and the lower punch assembly is connected to a first driving device, the first driving device drives the end of the lower punch assembly to extend out of or retract into the base plate assembly, and a guide plate is also provided above the base plate assembly, the guide plate and the base plate assembly are spaced apart for knife material to pass through, an upper punch assembly is provided inside the guide plate, the upper punch assembly is connected to a second driving device, the second driving device drives the end of the upper punch assembly to extend out of or retract into the guide plate, when the bridge position of the knife material moves to a predetermined position, the first driving device drives the end of the lower punch assembly to extend out of the base plate assembly, and the second driving device drives the end of the upper punch assembly to extend out of the guide plate to punch out opposite positions on both sides of the bridge position.

2. The die-cutting knife front and back bridge mold according to claim 1, characterized in that: The bottom plate assembly includes: a base, one end of the base is provided with a recess, a back plate is fixedly provided in the recess, one end of the guide plate is fixedly connected to the base, the top surface of the back plate and the bottom surface of the guide plate are spaced apart, a vertical sliding hole is provided in the back plate, and the lower punch needle assembly is slidably arranged in the vertical sliding hole.

3. The die-cutting knife front and back bridge mold according to claim 2, characterized in that: A slide groove is also provided in the bottom surface of the back plate, and the slide groove is perpendicular to the vertical slide hole. A lifting piece is slidably provided in the slide groove, and a slope inclined toward a first direction is provided on one side of the lifting piece. The lower punch needle assembly corresponds to the lifting piece, and the bottom end of the lower punch needle assembly contacts the lifting piece. The first driving device is connected to one end of the lifting piece. Driven by the first driving device, the lifting piece lifts the lower punch needle assembly through the slope so that the top end of the lower punch needle assembly extends out of the back plate.

4. The die-cutting knife front and back bridge mold according to claim 3, characterized in that: The lower punch needle assembly includes: a first punch needle, the first punch needle is located in the vertical sliding hole, the top surface of the first punch needle is provided with an inclined punching surface, and the bottom end of the first punch needle is adapted to the inclined surface.

5. The die-cutting knife front and back bridge mold according to claim 4, characterized in that: The lower punch needle assembly also includes: a ejection punch needle, which is slidably arranged in the back plate, and the other side of the lifting member is also provided with an inclined surface inclined in a second direction, and the second direction is opposite to the first direction. The ejection punch needle corresponds to the upper punch needle assembly.

6. The die-cutting knife front and back bridge mold according to claim 2, characterized in that: At least one lower pin is also inserted into the back plate, and the lower pin passes through the lower punch needle assembly. The lower pin can move up and down in the back plate and the lower punch needle assembly.

7. The die-cutting knife front and back bridge mold according to claim 6, characterized in that: The top surface of the back plate is located on both sides of the lower punch assembly and is respectively provided with push-down screws, the push-down screws correspond to the lower pins, and a spring is provided at the bottom of the push-down screws, and the spring is in contact with the lower pins.

8. The die-cutting knife front and back bridge mold according to claim 1, characterized in that: The upper punch needle assembly includes: a blade, which is slidably arranged at one end of the guide plate, a second punch needle is arranged in the blade, an adjusting screw is arranged on the top of the blade, and the adjusting screw is used to adjust the extension length of the second punch needle. A fixed top screw is also arranged on one side of the blade for fixing the second punch needle. An avoidance position is also arranged at the bottom end of the blade for the lower punch needle assembly to punch out a position.

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