An extrusion device

Abstract

The present invention provides an extrusion device having an extrusion assembly, the extrusion assembly including a first extrusion structure, a second extrusion structure, and a transmission structure. The transmission structure is obliquely arranged between the first extrusion structure and the second extrusion structure and slidably cooperates with at least one of the first extrusion structure and the second extrusion structure. The two second extrusion structures are correspondingly provided with a first extrusion portion and a second extrusion portion arranged opposite each other. A first extrusion head is movably fixed to the first extrusion portion, and a second extrusion head is movably fixed to the second extrusion portion. When the first extrusion structure drives the first extrusion portion and the second extrusion portion to move toward each other via two transmission structures, the transmission structure converts a force in a first direction from the first extrusion structure into a force in a second direction acting on the second extrusion structure, so that the first extrusion head and the second extrusion head have the same extrusion precision on the extruded part; the first direction and the second direction are different. The present invention has a small external size and high extrusion precision.

Description

Technical Field

[0001] The present invention relates to the technical field of medical device processing, in particular to an extrusion device. Background Art

[0002] An extrusion tool is a device used in the production and manufacturing of medical devices, specifically for extruding tubing. In the medical device field, extrusion can produce slight deformations in tubing, which can be leveraged for pre-assembly, pre-positioning, and pre-tensioning, facilitating the production of medical devices. For example, the extrusion of the hollow needle of a meniscus suture device ensures that the fixation rod, once installed, will not slide out of the hollow needle, reducing surgical risks.

[0003] The extrusion tooling currently available on the market objectively has the following shortcomings: on the one hand, the degree of extrusion is difficult to control and can only be performed according to the scale or the operator's proficiency, the extrusion error is large, and the precision is difficult to control; on the other hand, the objects to be extruded are all regular and have relatively large dimensions; on the other hand, the degree of extrusion is adjusted through the operator's operating process. When the operator's proficiency is different, the degree of extrusion will also be different, and it is impossible to achieve basically the same precision for objects extruded by different operators. Summary of the Invention

[0004] The purpose of the present invention is to solve at least one problem existing in the prior art and to provide an extrusion device with small dimensions, small extrusion error, and easy-to-control extrusion precision, so that operators with different proficiency can extrude objects with basically the same precision.

[0005] The extrusion device provided by the present invention includes an extrusion assembly, which includes a first extrusion structure, a second extrusion structure and a transmission structure. The transmission structure is obliquely arranged between the first extrusion structure and the second extrusion structure, and slides with at least one of the first extrusion structure and the second extrusion structure; there are two second extrusion structures, and the two second extrusion structures are correspondingly provided with a first extrusion part and a second extrusion part that are relatively arranged. The first extrusion part is movably fixed with a first extrusion head, and the second extrusion part is movably fixed with a second extrusion head; there are two transmission structures, and when the first extrusion structure drives the first extrusion part and the second extrusion part to move toward each other through the two transmission structures, the transmission structure converts the force in the first direction from the first extrusion structure into a force in the second direction acting on the second extrusion structure, so that the first extrusion head and the second extrusion head have the same accuracy in extruding the extruded part; the first direction is different from the second direction.

[0006] Furthermore, there are two transmission structures, which are respectively slidably matched with the first extrusion structure. Two first sliding holes are symmetrically opened on the first extrusion structure. The central axis of the first sliding hole is inclined toward the direction of movement away from the first extrusion structure. The transmission structure is passed through the first sliding hole and forms a sliding match with the first extrusion structure; there are two second extrusion structures, which are respectively fixedly connected to the corresponding transmission structures.

[0007] Furthermore, the first extrusion structure is fixedly connected to the transmission structure; the second extrusion structure is slidably matched with the transmission structure. There are two second extrusion structures, and two second sliding holes are symmetrically opened on the two second extrusion structures. The central axis of the second sliding hole is inclined toward the movement direction close to the first extrusion structure.

[0008] Furthermore, the two second extrusion structures are correspondingly provided with a first extrusion part and a second extrusion part that are relatively arranged, the first extrusion head is movably fixed on the first extrusion part, and the second extrusion head is movably fixed on the second extrusion part; the first extrusion structure drives the first extrusion part and the second extrusion part to move toward each other through two transmission structures, so that the first extrusion head and the second extrusion head extrude the extruded part.

[0009] Furthermore, the first extrusion part and the second extrusion part can be slidably fixed to the third base, and the third base has a first groove wall and a second groove wall arranged opposite to each other, and the first groove wall and the second groove wall are parallelly provided with a slide rail; the first extrusion part and the second extrusion part are provided with a second slide groove, and the second slide groove is slidably installed on the slide rail.

[0010] Furthermore, a first through groove is provided on the first extrusion part, the first through groove is provided parallel to the second slide groove, and the first extrusion head is movably fixed to the first through groove; a second through groove is provided on the second extrusion part, the second through groove is provided parallel to the second slide groove, and the second extrusion head is movably fixed to the second through groove.

[0011] Furthermore, the first extrusion portion has a first extrusion surface facing the second extrusion portion, the first extrusion head protrudes from the first extrusion surface, a first limiting boss is formed on the first extrusion surface, and a first limiting groove is formed on the first limiting boss; the second extrusion portion has a second extrusion surface facing the first extrusion portion, the second extrusion head protrudes from the second extrusion surface, a second limiting boss is formed on the second extrusion surface, and a second limiting groove is formed on the second limiting boss; the first limiting groove and the second limiting groove together form a positioning groove for positioning the rear end of the extruded part.

[0012] Furthermore, a third through hole for accommodating the stopper rod is provided on the first groove wall, and the first groove wall is fixed to the first base body; a first through hole is provided on the first base body, and the first through hole is communicated with the third through hole.

[0013] Furthermore, the first base is fixed with a first positioning part, and the first extrusion structure includes a first movable part, a second movable part and a first positioning part; a first sliding groove is provided on the first positioning part, and the first movable part is slidably installed in the first sliding groove; the second movable part is fixedly connected to the first movable part, and when the first movable part moves in the first direction along the first sliding groove, the second movable part moves in the first direction, driving the transmission structure to move along the first direction.

[0014] Furthermore, an operating mechanism is installed above the first movable part, and the operating mechanism includes an operating part and a hinge structure, and the operating part is connected to one end of the hinge structure; an H-shaped structure is arranged inside the hinge structure, and the H-shaped structure has a first groove and a second groove arranged opposite to each other, and the groove wall of the first groove is pivotally connected to the operating part, and the groove wall of the second groove is pivotally connected to the first movable part.

[0015] Furthermore, the shape of the stopper rod changes with the shape of the front end of the extruded member.

[0016] The present invention converts the force in the first direction from the first extrusion structure into a force in the second direction acting on the second extrusion structure through an inclined transmission structure, thereby reducing the external dimensions of the extrusion device; by adjusting the relative positions of the first extrusion head and the first extrusion part and the second extrusion head and the second extrusion part, the extrusion error is small and the extrusion accuracy is easy to control, so that operators with different proficiency can extrude objects with basically the same accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The preferred embodiments will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present invention.

[0018] Figure 1 This is a schematic diagram of the overall structure of the extrusion device provided by a preferred embodiment of the present invention;

[0019] Figure 2 Main display Figure 1 Extrusion assembly 30;

[0020] Figure 3 Main display Figure 1 a second extruded structure 34;

[0021] Figure 4 Main display Figure 1 A third substrate 15;

[0022] Figure 5 It is a schematic diagram of the cooperation between the stopper rod and the squeezed tube;

[0023] Figure 6 Main display Figure 3 The first extrusion head 343 and the second extrusion head 345;

[0024] Figure 7 Main display Figure 1 The first substrate 11 in. DETAILED DESCRIPTION

[0025] The technical solution of this application is further described in detail below with reference to the accompanying drawings and specific embodiments. Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as those commonly understood by those skilled in the art to which this application belongs. The terms used in this specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0026] The extrusion device provided in the preferred embodiment of the present application is intended to be used for extruding medical tubing, and the extrusion device comprises an extrusion assembly 30. Figure 1 As shown, the extrusion assembly 30 includes a first extrusion structure 32, a second extrusion structure 34 and a transmission structure 36. 。 The transmission structure 36 is obliquely disposed between the first extrusion structure 32 and the second extrusion structure 34 and is slidably engaged with at least one of the first extrusion structure 32 and the second extrusion structure 34 .

[0027] In this embodiment, you can refer to Figure 2 The first extrusion structure 32 is fixedly connected to the transmission structure 36. The second extrusion structure 34 is in close sliding cooperation with the transmission structure 36. There are two second extrusion structures 34, and two second sliding holes 341 are symmetrically provided on the two second extrusion structures 34. The central axis of the second sliding hole 341 is inclined toward the direction of movement close to the first extrusion structure 32. In another embodiment, there are two transmission structures 36, and they are respectively in close sliding cooperation with the first extrusion structure 32. The first extrusion structure 32 is symmetrically provided with two first sliding holes 321. The central axis of the first sliding hole 321 is inclined toward the direction of movement away from the first extrusion structure 32. Specifically, the central axis of the first sliding hole 321 is inclined toward the direction of movement away from the first extrusion structure 32. The transmission structure 36 is inserted into the first sliding hole 321 and forms a close sliding cooperation with the first extrusion structure 32. There are two second extrusion structures 34, and they are respectively fixedly connected to the transmission structure 36. In another embodiment, the transmission structure 36 is slidably connected to both the first extrusion structure 32 and the second extrusion structure 34.

[0028] The transmission structure 36 is preferably symmetrically arranged with respect to both the first extrusion structure 32 and the second extrusion structure 34. When the transmission structure 36 slides with one of the first extrusion structure 32 and the second extrusion structure 34, the cumulative error is small, facilitating precision control. However, when the transmission structure slides with both, the cumulative error is large. To avoid excessive cumulative error, the transmission structure 36 of this embodiment is tightly fitted with the second sliding hole 341.

[0029] The direction of movement of the transmission structure 36 is inclined relative to the direction of movement of the first extrusion structure 32 and the second extrusion structure 34. When the first extrusion structure 32 drives the transmission structure 36 to move, the transmission structure 36 converts the force from the first extrusion structure 32 in a first direction into a force acting on the second extrusion structure 34 in a second direction, so that the second extrusion structure 34 can extrude the extruded part 20 with the same precision. The first direction and the second direction are different.

[0030] The first direction is generally perpendicular to the second direction. In this embodiment, the first direction is vertical, and the second direction is horizontal. Transmission structure 36 is in the form of a slide bar, and second extrusion structure 34 is in the form of a slider. This embodiment converts the vertical relative motion of the slide bar into the left-right motion of the slider, resulting in a change in motion direction. Furthermore, the motion is relatively stable, highly precise, and easily controlled.

[0031] See Figure 3 and Figure 6 . The two second extrusion structures 34 are correspondingly provided with a first extrusion part 342 and a second extrusion part 344 that are arranged opposite to each other. The first extrusion head 343 is movably fixed to the first extrusion part 342, and the second extrusion head 345 is movably fixed to the second extrusion part 344. The first extrusion head 343 and the second extrusion head 345 can be fixed to the first extrusion part 342 and the second extrusion part 344 respectively by a screw assembly 90, so that the first extrusion head 343 and the second extrusion head 345 will not move relative to the first extrusion part 342 and the second extrusion part 344 after being subjected to force. There are various ways for the screw assembly 90 to lock the first extrusion head 343 and the second extrusion head 345 to the first extrusion part 342 and the second extrusion part 344 respectively. It can be pressed from above, squeezed from the back, or locked from the side. The first extrusion structure 32 drives the first extrusion part 342 and the second extrusion part 344 to move toward each other through two transmission structures 36, so that the first extrusion head 343 and the second extrusion head 345 extrudes the extruded part 20. By adjusting the relative position of the first extrusion head 343 and the first extrusion part 342, as well as the relative position of the second extrusion head 345 relative to the second extrusion part 344, the relative distance or fitting spacing between the first extrusion head 343 and the second extrusion head 345 can be adjusted, thereby adjusting the degree of extrusion of the extruded part 20. Therefore, the degree of extrusion of the extruded part 20 can be adjusted under the influence of structural assembly. After adjustment, as long as the extrusion process is operated in place, the degree of extrusion of the extruded part 20 is the same.

[0032] See Figures 3 to 5The first extrusion portion 342 and the second extrusion portion 344 are slidably fixed to the third base 15. The third base 15 is generally groove-shaped, with a first groove wall 152 and a second groove wall 154 disposed opposite each other. The first groove wall 152 is taller than the second groove wall 154. Slide rails 157 are disposed parallel to the first and second groove walls 152, 154. The first and second extrusion portions 342, 344 are provided with second slide grooves 347, which are slidably mounted on the slide rails 157. The bottoms of the first and second extrusion portions 342, 344 slide along the groove bottom 151 of the third base 15.

[0033] See Figure 3 and Figure 4 The first extrusion portion 342 is provided with a first through-groove 331, which is arranged parallel to the second chute 347. The first extrusion head 343 is movably fixed to the first through-groove 331. The second extrusion portion 344 is provided with a second through-groove 351, which is arranged parallel to the second chute 347. The second extrusion head 345 is movably fixed to the second through-groove 351.

[0034] Continue reading Figure 3 , and also see Figure 1 and Figure 6 . The first extrusion portion 342 has a first extrusion surface 41 facing the second extrusion portion 344, the first extrusion head 343 protrudes from the first extrusion surface 41, a first limiting boss 43 is formed on the first extrusion surface 41, and a first limiting groove 45 is formed on the first limiting boss 43. The second extrusion portion 344 has a second extrusion surface 61 facing the first extrusion portion 342, the second extrusion head 345 protrudes from the second extrusion surface 61, a second limiting boss 63 is formed on the second extrusion surface 61, and a second limiting groove 65 is formed on the second limiting boss 63. The first limiting groove 45 and the second limiting groove 65 of the second extrusion portion 344 together form a positioning groove 70 for positioning the rear end 24 of the extruded part. In this embodiment, the first extrusion surface 41 is composed of two parts, the first part protrudes from the first extrusion head 343, and the second part forms the first limiting boss 43. The two parts are not on the same cross-section, and the second part is closer to the second extrusion portion 344 than the first part. Similarly, the second extrusion surface 61 is also composed of two parts. The first part protrudes from the second extrusion head 345 , and the second part forms the second limiting boss 63 . The second part is closer to the first extrusion portion 342 than the first part.

[0035] See also Figure 3 and Figure 5In this embodiment, the extruded part 20 is a medical device tube. When the rear end 24 of the extruded part is in the shape of a catheter, the positioning groove 70 is cylindrical. The rear end 24 of the extruded part is fixed to the positioning groove 70, and the front end 22 of the extruded part is fixed to the stopper rod 80. When the extruded part 20 is first placed in the extrusion device and the first extrusion portion 342 is still away from the second extrusion portion 344, the extruded part 20 can be held to prevent it from falling, or a separate jig with a positioning groove can be placed under the rear end 24 of the extruded part.

[0036] See Figures 1 to 7 The third base 15 is fixed to the angle formed by the second base 13 and the first base 11 by the screw assembly 90. The second base 13 and the first base 11 are perpendicular to each other. The higher side of the first groove wall 152 is fixed to the first base 11, and the first groove bottom 151 is fixed to the second base 13. A third through hole 153 for accommodating the stopper rod 80 is provided on the first groove wall 152. A first through hole 113 is provided on the first base 11. The first through hole 113 is connected to the third through hole 153. The stopper rod 80 is inserted into the third through hole 153 through the first through hole. After the stopper rod 80 is inserted into the third through hole 153, it can be tightened and fixed to the third through hole 153 by the screw assembly 90. During operation, the stopper rod 80 is pressed so that it will not move when subjected to external force, ensuring that the object being squeezed can be squeezed with guaranteed precision. If the shape of the front end 22 of the extruded part changes or becomes irregular, the shape of the end of the stopper rod 80 can change accordingly. This allows for extrusion of extruded parts with different and irregular shapes and features, demonstrating a high degree of professionalism and specialized capabilities. The high-temperature-resistant insulating fastening structure cooperates with the head of the stopper rod 80. The head structure of the stopper rod 80 is not fixed and can change according to the structure or shape of the front end 22 of the extruded part. It can be regular or irregular. For example, if the front end 22 of the extruded part has a circular hole or a cutout, the shape of the stopper rod 80 will also change accordingly. After the stopper rod 80 is inserted into the cavity of the extruded part 20, the first and second extrusion heads 343 and 345 squeeze the extruded part 20, changing the extrusion molding effect of the extruded part 20. In this case, the stopper rod 80 effectively shapes the extruded part 20.

[0037] You can refer to it again Figure 1. A first positioning portion 326 is provided on the first base 11, and the first positioning portion 326 can be fixed to the first base 11 by a screw assembly 90. The first extrusion structure 32 includes a first movable portion 322, a second movable portion 324 and a first positioning portion 326. A first slide groove 327 is provided on the first positioning portion 326, and the first movable portion 322 is slidably installed in the first slide groove 327. The second movable portion 324 is fixedly connected to the first movable portion 322. When the first movable portion 322 moves in the first direction along the first slide groove 327, the second movable portion 324 moves in the first direction, driving the transmission structure 36 to move in the first direction. An operating mechanism 50 is installed above the first movable portion 322. The operating mechanism 50 includes an operating portion 51 and a hinge structure 53. The operating portion 51 is connected to one end of the hinge structure 53. The hinge structure 53 is internally provided with an H-shaped structure having a first groove 531 and a second groove 533 disposed opposite each other. The first groove 531 pivotally connects to the operating portion 51, while the second groove 533 pivotally connects to the first movable portion 322. In this embodiment, the operating portion 51 may be a push-type handle. The rear end of the operating portion 51 is secured to the hinge structure 512 via a threaded assembly 90. The support base 112 is also secured to the first base 11 via the threaded assembly 90. The operating portion 51 can be secured to the first base 11 via the support base 112.

[0038] The above-mentioned extrusion process is completed, which means that the operator's operating stroke has reached the maximum stroke position, or it can be said that the action is complete. The operator can press the operating part 51. When the pressure can no longer be continued, it is considered that the operating stroke has reached the maximum. In this embodiment, the operating stroke can be limited by adjusting the position of the first extrusion head 343 and the second extrusion head 345 so that the first extrusion surface 41 and the second extrusion surface 61 are in contact and cannot move further. In other embodiments, it can also be limited by the distance between the first movable part 322 and the first positioning part 326 and the lower end of the hinge structure 53, or by the sliding stroke of the transmission structure 36.

[0039] During operation, the transmission structure 36 in this embodiment is fixedly connected to the first extrusion structure 32. Therefore, when the operating part 51 is pressed, it will be forced to move downward, forcing the first extrusion part 342 and the second extrusion part 344 to move toward the center. Since the first extrusion head 343 and the second extrusion head 345 are tightened by the threaded assembly 90 and remain fixed with the first extrusion part 342 and the second extrusion part 344, the first extrusion head 343 and the second extrusion head 345 also move toward the center, and together squeeze the extruded part 22 that is matched with the head end of the stopper rod 80 until it is completely extruded and formed.

[0040] In summary, the present invention provides an extrusion device that is independent of operator proficiency. Furthermore, the objects being extruded can be either irregular or regular in shape. Furthermore, the degree of extrusion is adjustable, and once adjusted, the degree of extrusion is determined. High-precision extrusion results can be achieved with proper operation. The present invention has broad applications in the field of medical devices, is easy to use, reduces production costs, and ensures product quality.

[0041] In this document, the directions or positional relationships indicated by terms such as "up", "down", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "vertical", and "horizontal" are based on the directions or positional relationships shown in the accompanying drawings and are only for the clarity of the technical solution and the convenience of description, and therefore should not be understood as limiting the present invention.

[0042] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. An extrusion device, characterized in that: The invention comprises an extrusion assembly (30), wherein the extrusion assembly (30) comprises a first extrusion structure (32), a second extrusion structure (34) and a transmission structure (36), wherein the transmission structure (36) is obliquely arranged between the first extrusion structure (32) and the second extrusion structure (34), and is slidably matched with at least one of the first extrusion structure (32) and the second extrusion structure (34); There are two second extrusion structures (34), and the two second extrusion structures (34) are respectively provided with a first extrusion portion (342) and a second extrusion portion (344) arranged opposite to each other, a first extrusion head (343) is movably fixed to the first extrusion portion (342), and a second extrusion head (345) is movably fixed to the second extrusion portion (344); There are two transmission structures (36), and when the first extrusion structure (32) drives the first extrusion part (342) and the second extrusion part (344) to move toward each other through the two transmission structures (36), the transmission structure (36) converts the force in the first direction from the first extrusion structure (32) into a force in the second direction acting on the second extrusion structure (34), so that the first extrusion head (343) and the second extrusion head (345) have the same precision in extruding the extruded part (20); the first direction is different from the second direction; The first extrusion head (343) and the second extrusion head (345) are respectively fixed to the first extrusion part (342) and the second extrusion part (344) through a threaded assembly (90), so that the first extrusion head (343) and the second extrusion head (345) will not move relative to the first extrusion part (342) and the second extrusion part (344) after being subjected to force. By adjusting the relative position of the first extrusion head (343) and the first extrusion part (342), and the relative position of the second extrusion head (345) relative to the second extrusion part (344), the relative distance or fitting spacing between the first extrusion head (343) and the second extrusion head (345) can be adjusted, thereby adjusting the degree of extrusion of the extruded part (20).

2. The extrusion device according to claim 1, characterized in that: There are two transmission structures (36), which are respectively slidably matched with the first extrusion structure (32). Two first sliding holes (321) are symmetrically provided on the first extrusion structure (32). The central axis of the first sliding hole (321) is inclined toward the direction of movement away from the first extrusion structure (32). The transmission structure (36) is inserted into the first sliding hole (321) to form a sliding match with the first extrusion structure (32); There are two second extrusion structures (34), which are respectively fixedly connected to the transmission structure (36).

3. The extrusion device according to claim 1, characterized in that: The first extrusion structure (32) is fixedly connected to the transmission structure (36); The second extrusion structure (34) is slidably engaged with the transmission structure (36). There are two second extrusion structures (34), and two second sliding holes (341) are symmetrically provided on the two second extrusion structures (34). The central axis of the second sliding hole (341) is inclined toward the movement direction close to the first extrusion structure (32).

4. The extrusion device according to claim 1, characterized in that: The first extrusion portion (342) and the second extrusion portion (344) are slidably fixed to a third base (15); the third base (15) has a first groove wall (152) and a second groove wall (154) arranged opposite to each other; and slide rails (157) are arranged in parallel on the first groove wall (152) and the second groove wall (154); A second sliding groove (347) is provided on the first extrusion portion (342) and the second extrusion portion (344), and the second sliding groove (347) is slidably mounted on the slide rail (157).

5. The extrusion device according to claim 4, characterized in that: A first through-groove (331) is provided on the first extrusion portion (342), the first through-groove (331) is arranged parallel to the second slide groove (347), and the first extrusion head (343) is movably fixed to the first through-groove (331); A second through-groove (351) is provided on the second extrusion portion (344), the second through-groove (351) is arranged parallel to the second slide groove (347), and the second extrusion head (345) is movably fixed to the second through-groove (351).

6. The extrusion device according to claim 1, characterized in that: The first extrusion portion (342) has a first extrusion surface (41) facing the second extrusion portion (344); the first extrusion head (343) protrudes from the first extrusion surface (41); a first limiting boss (43) is formed on the first extrusion surface (41); and a first limiting groove (45) is formed on the first limiting boss (43); The second extrusion portion (344) has a second extrusion surface (61) facing the first extrusion portion (342), the second extrusion head (345) protrudes from the second extrusion surface (61), a second limiting boss (63) is formed on the second extrusion surface (61), and a second limiting groove (65) is formed on the second limiting boss (63); The first limiting groove (45) and the second limiting groove (65) together form a positioning groove (70) for positioning the rear end (24) of the extruded component.

7. The extrusion device according to claim 4, characterized in that: A third through hole (153) for accommodating a stopper rod (80) is provided on the first groove wall (152), and the first groove wall (152) is fixed to the first base body (11); A first through hole (113) is provided on the first base body (11), and the first through hole (113) is connected to the third through hole (153).

8. The extrusion device according to claim 7, characterized in that: The first base (11) is fixed with a first positioning portion (326), and the first extrusion structure (32) comprises a first moving portion (322), a second moving portion (324), and the first positioning portion (326); A first sliding groove (327) is provided on the first positioning portion (326), and the first moving portion (322) is slidably mounted in the first sliding groove (327); The second moving part (324) is fixedly connected to the first moving part (322). When the first moving part (322) moves in the first direction along the first sliding groove (327), the second moving part (324) moves in the first direction, driving the transmission structure (36) to move in the first direction.

9. The extrusion device according to claim 8, characterized in that: An operating mechanism (50) is installed above the first movable portion (322), the operating mechanism (50) comprising an operating portion (51) and a hinge structure (53), the operating portion (51) being connected to one end of the hinge structure (53); An H-shaped structure is provided inside the hinge structure (53), wherein the H-shaped structure has a first groove (531) and a second groove (533) arranged opposite to each other, wherein the groove wall of the first groove (531) is pivotally connected to the operating portion (51), and the groove wall of the second groove (533) is pivotally connected to the first moving portion (322).

10. The extrusion device according to claim 7, characterized in that: The shape of the stopper rod (80) changes with the structure of the front end (22) of the extruded part.

Images