Ejector pin type circular knife die and ejector pin mounting tool thereof

Abstract

The utility model relates to the technical field of die-cutting circular knife dies, in particular to an ejector pin type circular knife die and an ejector pin installation tool thereof, which comprise a cutting die main body and an ejector pin, the cutting die main body is in an axial through cylindrical shape, and a plurality of ejector pin installation holes are symmetrically arranged on the outer wall of the cutting die main body left and right. The diameter of the thimble mounting hole on one side of the inner wall of the cutting die main body is greater than that on one side of the outer wall of the cutting die main body; a plurality of ejector pins are detachably inserted into the ejector pin mounting holes and are in a circular truncated cone shape, the large-head ends of the ejector pins are matched with the sides, located on the inner wall of the cutting die body, of the ejector pin mounting holes in size, and the small-head ends of the ejector pins are the same as the sides, located on the outer wall of the cutting die body, of the ejector pin mounting holes in diameter. And when the large head end of the ejector pin is completely matched with the ejector pin mounting hole in one side of the inner wall of the cutting die main body, the small head end of the ejector pin extends out of the outer side of the ejector pin mounting hole. The ejector pin type circular cutter die and the ejector pin mounting tool thereof can improve the ejector pin mounting efficiency.

Description

Technical Field

[0001] This utility model relates to the field of die-cutting circular cutter mold technology, and in particular to an ejector pin type circular cutter mold and its ejector pin installation tool. Background Technology

[0002] Die-cutting technology is widely used in printing, packaging, electronics, pharmaceuticals, and many other industries. Die-cutting dies, as core tools, directly affect the quality and efficiency of die-cut products due to their type and performance. Die-cutting dies are classified in many ways, each with its own characteristics. Circular die-cutting dies, as an emerging technology, have attracted widespread attention due to their high efficiency and high precision.

[0003] Circular die-cutting, also known as circular die-cutting mold, is usually composed of a blade and a mold. It uses gear transmission to achieve continuous rolling die-cutting. The ejector-type waste removal circular die-cutting is a type of circular die-cutting mold that allows die-cutting and waste removal to be carried out simultaneously, effectively avoiding waste accumulation and damage to the blade. It is an ideal choice for products with small holes, small gaps, and other difficult-to-remove waste.

[0004] Existing ejector-type waste removal circular cutters are all equipped with a shaft head on one side, with half of the shaft body hollowed out to install the ejector pin. This single-sided ejector pin installation method is slow, inefficient, and makes it difficult to observe the phenomenon of missing ejector pins. Utility Model Content

[0005] The purpose of this utility model is to provide a pin-type circular die-cutting mold and its pin installation tool to solve the technical problems existing in the background art.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows:

[0007] A pin-type circular die-cutting mold includes: a die-cutting body and pins. The die-cutting body is an axially penetrating cylindrical shape. A plurality of pin mounting holes are symmetrically formed on the outer wall of the die-cutting body. Each pin mounting hole is countersunk, and the diameter of the pin mounting hole on the inner wall side of the die-cutting body is larger than the diameter on the outer wall side. A plurality of pins are detachably inserted into the pin mounting holes. Each pin is frustoconical, with the larger end of the pin matching the size of the pin mounting hole on the inner wall side of the die-cutting body, and the smaller end having the same diameter as the pin mounting hole on the outer wall side of the die-cutting body. When the larger end of the pin is fully engaged with the pin mounting hole on the inner wall side of the die-cutting body, the smaller end of the pin extends beyond the outer side of the pin mounting hole.

[0008] Furthermore, it also includes: support rings, shaft head frustums, and shaft heads. Two support rings are symmetrically fixedly connected to both ends of the die body. Two shaft head frustums are symmetrically and detachably fixedly installed on the outer ends of the two support rings. Two shaft heads are coaxially and symmetrically fixedly connected to the outer ends of the two shaft head frustums.

[0009] Furthermore, the diameter of the large end of the frustum of the shaft head is the same as the diameter of the outer wall of the support ring, the diameter of the small end of the frustum of the shaft head is the same as the diameter of the inner wall of the support ring, and the length of the small end of the frustum of the shaft head is the same as the height of the support ring.

[0010] Furthermore, it also includes fasteners, which are provided in several sets, and the outer ends of the two support rings are detachably and fixedly connected to the two shaft head truncated cones by several sets of fasteners.

[0011] Furthermore, the fastener includes: a bolt and a washer; a plurality of threaded holes are evenly provided on the outer wall of the support ring; a plurality of through holes corresponding one-to-one with the plurality of threaded holes are provided on the truncated cone of the shaft head; the bolt slides through the through holes and is threadedly connected to the threaded holes at the corresponding positions; a washer is pressed and contacted between the large end of the bolt and the outer wall of the truncated cone of the shaft head.

[0012] Furthermore, it also includes: hollow rubber rods, two of which are provided, a center mark line is provided in the middle of the outer wall of the die body, the outer wall diameter of the two hollow rubber rods is the same as the inner wall diameter of the die body, the sum of the lengths of the two hollow rubber rods is equal to the length of the die body, and the two hollow rubber rods are symmetrically slidably inserted into the inner cavity of the die body.

[0013] Furthermore, it also includes: a center roller, the length of which is equal to the length of the die body, the center roller passing through and filling the inner cavities of the two hollow rubber rods respectively.

[0014] An ejector pin installation tool for an ejector pin type circular die is used to install ejector pins in the ejector pin type circular die. It includes: a mounting plate and a handle. The mounting plate has a plurality of ejector pin placement holes evenly arranged on the right side of its top end. The plurality of ejector pin placement holes are arranged one-to-one with a plurality of ejector pin mounting holes arranged axially on one side of the die body. The ejector pin placement holes cooperate with the ejector pins. When the ejector pin is placed in the ejector pin placement hole, the small end of the ejector pin protrudes from the ejector pin placement hole. The handle is fixedly connected to the left end of the mounting plate.

[0015] Furthermore, the mounting plate is L-shaped, and the handle is provided with anti-slip texture.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] By designing the die-cutting mold body as an axially continuous cylindrical shape, it is convenient to install ejector pins from both ends of the die-cutting mold body. Compared with installing ejector pins from one side, this can improve the installation speed and efficiency. With the ejector pin installation tool that is designed to match the ejector pins, multiple ejector pins can be installed at the same time, which greatly improves the installation speed. Attached Figure Description

[0018] Figure 1This is a structural schematic diagram of a pin-type circular die provided by this utility model;

[0019] Figure 2 This is a cross-sectional view of a pin-type circular die provided by this utility model;

[0020] Figure 3 This is a structural schematic diagram of an ejector pin installation tool for an ejector pin type circular die-cutting mold provided by this utility model.

[0021] The labels in the attached drawings are as follows: 1-die body, 2-support ring, 3-shaft head frustum, 4-fastener, 5-shaft head, 6-center mark line, 7-ejector pin, 8-hollow rubber rod, 9-center roller, 10-mounting plate, 1001-ejector pin placement hole, 11-handle. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0023] See Figures 1-3 As shown, a pin-type circular die includes: a die body 1 and pins 7. The die body 1 is an axially penetrating cylindrical shape. Several pin mounting holes are symmetrically opened on the outer wall of the die body 1. The pin mounting holes are countersunk holes. The diameter of the pin mounting hole on the inner wall side of the die body 1 is larger than the diameter on the outer wall side of the die body 1. Several pins 7 are detachably inserted into the pin mounting holes. The pins 7 are frustoconical. The size of the large end of the pin 7 matches the size of the pin mounting hole on the inner wall side of the die body 1. The diameter of the small end of the pin 7 is the same as the diameter of the pin mounting hole on the outer wall side of the die body 1. When the large end of the pin 7 is fully engaged with the pin mounting hole on the inner wall side of the die body 1, the small end of the pin 7 extends out of the pin mounting hole.

[0024] The ejector-type circular die also includes: a support ring 2, a shaft head frustum 3, and a shaft head 5. Two support rings 2 are symmetrically fixedly connected to both ends of the die body 1 along the axial direction. Two shaft head frustums 3 are symmetrically and detachably fixedly installed on the outer ends of the two support rings 2. Two shaft heads 5 are coaxially and symmetrically fixedly connected to the outer ends of the two shaft head frustums 3.

[0025] The diameter of the large end of the frustum 3 is the same as the outer diameter of the support ring 2, the diameter of the small end of the frustum 3 is the same as the inner diameter of the support ring 2, and the length of the small end of the frustum 3 is the same as the height of the support ring 2.

[0026] In this embodiment, the ejector-type circular die further includes fasteners 4, which are provided in several sets. The outer ends of the two support rings 2 are detachably fixedly connected to the two shaft head truncated cones 3 through several sets of fasteners 4.

[0027] Fastener 4 includes: bolts and washers. The outer wall of the support ring 2 is evenly provided with several threaded holes. The shaft head truncated cone 3 is provided with several through holes that correspond one-to-one with the several threaded holes. The bolt slides through the through holes and is threaded to the corresponding threaded holes. The large end of the bolt is pressed against the outer wall of the shaft head truncated cone 3 with a washer.

[0028] In this embodiment, the ejector-type circular die further includes: hollow rubber rods 8, two of which are provided. A center mark line 6 is provided in the middle of the outer wall of the die body 1. The outer diameter of the two hollow rubber rods 8 is the same as the inner diameter of the die body 1. The sum of the lengths of the two hollow rubber rods 8 is equal to the length of the die body 1. The two hollow rubber rods 8 are symmetrically slidably inserted into the inner cavity of the die body 1. The hollow rubber rods 8 can prevent the ejector pin 7 from falling off.

[0029] The ejector-type circular die also includes a center roller 9, the length of which is equal to the length of the die body 1. The center roller 9 passes through and fills the inner cavities of the two hollow rubber rods 8.

[0030] An ejector pin installation tool for an ejector pin type circular die is used to install ejector pins 7 in an ejector pin type circular die. It includes a mounting plate 10 and a handle 11. The mounting plate 10 has a plurality of ejector pin placement holes 1001 evenly arranged on the right side of its top end. These holes correspond one-to-one with a plurality of ejector pin installation holes arranged axially on one side of the die body 1. The ejector pin placement holes 1001 cooperate with the ejector pins 7. When the ejector pin 7 is placed in the ejector pin placement hole 1001, the small end of the ejector pin 7 protrudes from the hole. The handle 11 is fixedly connected to the left end of the mounting plate 10. By placing a plurality of ejector pins 7 in the ejector pin placement holes 1001 and extending the entire device into the inner cavity of the die body 1 through the handle 11, and aligning them one-to-one with the plurality of ejector pin installation holes arranged axially on one side, multiple ejector pins 7 can be installed simultaneously, greatly improving the installation speed.

[0031] In this embodiment, the mounting plate 10 is L-shaped, and the handle 11 is provided with anti-slip texture. The anti-slip texture can prevent the operator from slipping when holding the handle 11.

[0032] When it is necessary to install ejector pins 7 on the die body 1, first place the die body 1 on the worktable, then place several ejector pins 7 in the ejector pin placement holes 1001, and extend the entire device into the inner cavity of the die body 1 through the handle 11, corresponding one-to-one with several ejector pin mounting holes in the axial array on one side, so as to install multiple ejector pins 7 at the same time. Then repeat the above steps multiple times until all ejector pins 7 on one side are installed. Next, insert hollow rubber rods 8 into the inner cavity of the die body 1, not exceeding the center mark line 6 and ensuring that the ejector pins 7 do not fall off; then install the ejector pins 7 on the other side in the same way. After all ejector pins 7 are installed, move the two hollow rubber rods 8 relative to each other and fit them together, then insert the center roller 9, and then install the two shaft head frustums 3 on the two support rings 2 respectively through several fasteners 4; finally, arrange the material for test cutting.

[0033] In the description of this utility model, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", "top / bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications, equivalent substitutions, and improvements made by those skilled in the art to the above embodiments without departing from the scope of the present utility model's technical solution and based on the technical essence of the present utility model shall still fall within the protection scope of the present utility model's technical solution.

Claims

1. A needle die for a circular knife, characterized in that It includes: The cutter die body (1) is axially through the cylinder, the cutter die body (1) outer wall is symmetrically provided with a plurality of ejector pin mounting holes, the ejector pin mounting hole is countersunk hole, the diameter of the ejector pin mounting hole located on the inner wall of the cutter die body (1) is greater than the diameter of the ejector pin mounting hole located on the outer wall of the cutter die body (1);A plurality of ejector pins (7) are detachably inserted into a plurality of ejector pin mounting holes, the ejector pin (7) is a circular truncated cone, the large end size of the ejector pin (7) is matched with the size of the ejector pin mounting hole located on the inner wall of the cutter die body (1), the small end diameter of the ejector pin (7) is the same as the diameter of the ejector pin mounting hole located on the outer wall of the cutter die body (1), when the large end of the ejector pin (7) is completely matched with the ejector pin mounting hole located on the inner wall of the cutter die body (1), the small end of the ejector pin (7) extends outside the ejector pin mounting hole.

2. A needle die for a circular knife as claimed in claim 1, characterized in that: It also includes: Support ring (2), shaft head circular truncated cone (3) and shaft head (5), the axial both ends of the cutter die body (1) are symmetrically fixedly connected with two support rings (2), the outer side ends of the two support rings (2) are respectively and symmetrically detachably fixedly installed with two shaft head circular truncated cones (3), the outer side ends of the two shaft head circular truncated cones (3) are coaxially and symmetrically fixedly connected with two shaft heads (5).

3. A needle die for a circular knife as claimed in claim 2, wherein: The diameter of the large end of the shaft head circular truncated cone (3) is the same as the diameter of the outer wall of the support ring (2), the diameter of the small end of the shaft head circular truncated cone (3) is the same as the diameter of the inner wall of the support ring (2), and the length of the small end of the shaft head circular truncated cone (3) is the same as the height of the support ring (2).

4. A needle die for a circular knife as defined in claim 3, wherein: It also includes: Fastener (4), the fastener (4) is provided with a plurality of groups, the outer side ends of the two support rings (2) and the two shaft head circular truncated cones (3) are detachably fixedly connected by a plurality of groups of fasteners (4).

5. A needle die for a circular knife as claimed in claim 4, wherein: The fastener (4) includes: bolt and gasket, a plurality of threaded holes are uniformly formed on the outer wall of the support ring (2), a plurality of through holes corresponding to the plurality of threaded holes are formed on the shaft head circular truncated cone (3), the bolt is slidably penetrated through the through hole and threadedly connected with the threaded hole at the corresponding position, and the gasket is in pressure contact between the large end of the bolt and the outer wall of the shaft head circular truncated cone (3).

6. A needle die for a circular knife as defined in claim 1, wherein: It also includes: Hollow rubber stick (8), the hollow rubber stick (8) is provided with two, the cutter die body (1) outer wall middle part is provided with center mark line (6), the outer wall diameter of the two hollow rubber sticks (8) is the same as the inner wall diameter of the cutter die body (1), the sum of the lengths of the two hollow rubber sticks (8) is equal to the length of the cutter die body (1), and the two hollow rubber sticks (8) are symmetrically and slidably inserted into the inner cavity of the cutter die body (1).

7. A needle die for a circular knife as defined in claim 6, wherein: It also includes: Center roller (9), the length of the center roller (9) is equal to the length of the cutter die body (1), and the center roller (9) is respectively penetrated and filled in the inner cavities of the two hollow rubber sticks (8).

8. A punch mounting tool for a punch die for a punch and die circular blade, for mounting a punch (7) in a punch die for a punch and die circular blade according to claim 1, characterized in that: It includes: The installation plate (10) and the handle (11), the installation plate (10) top end right side is uniformly provided with several needle placing holes (1001), several needle placing holes (1001) with the single side axial array of several needle mounting holes of the cutter die main body (1) one-to-one arrangement, the needle placing hole (1001) is matched with the needle (7), when the needle (7) is placed in the needle placing hole (1001), the small head end of needle (7) is stretched out from the needle placing hole (1001), the installation plate (10) left end is fixedly connected with the handle (11).

9. A needle mounting tool for a needle die of a needle die circular die as defined in claim 8, characterized in that: The installation plate (10) is L-shaped, and the handle (11) is provided with anti-skid lines.

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