Staple cartridge injection mold

Abstract

The utility model discloses a kind of nail bin injection moulds, including upper die mechanism and lower die mechanism, upper die mechanism has upper die core, lower die mechanism has lower die core, first, second top plate, lower die core is equipped with insert assembly and can be cooperated with upper die core, insert assembly cooperation and define cavity, first top plate is equipped with multiple first thimble and multiple oblique ejector pins of corresponding cavity front and back side distribution, second top plate is equipped with multiple second thimble respectively in cavity left and right end, the upper portion of first, second thimble is all worn insert assembly and can all extend to cavity, oblique ejector pin is obliquely slidably inserted in lower die core and can extend to the side wall of cavity, first, second top plate can be moved together, so that first, second thimble collectively push long strip-shaped nail bin, oblique ejector pin is obliquely moved to separate from long strip-shaped nail bin, second top plate can be relative to first top plate, so that second thimble pushes long strip-shaped nail bin. The utility model is beneficial to the injection molding of long strip-shaped nail bin and guarantee demoulding quality.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, and in particular to a stud cartridge injection mold. Background Technology

[0002] The staple cartridge is one of the core components of stapler-type surgical instruments, and it has high requirements for parameters such as strength, shape, and related dimensions. Existing staple cartridges have a long, narrow structure, referring to... Figure 1 and Figure 2 The illustration shows a long, narrow staple cartridge 10. Multiple strip-shaped grooves 12 are provided at both ends along its length (left-right direction in the illustration). Multiple rows of through-holes are provided between the ends, each row including multiple through-holes 11 spaced apart along the length. The rows of through-holes are staggered along the width (front-back direction in the illustration). The long, narrow staple cartridge 10 also has undulating sidewall structures on both sides along its width. This type of long, narrow staple cartridge has a complex structure, resulting in a complex insert structure, making integral molding difficult, and also making demolding the cartridge difficult. Therefore, it is necessary to provide a staple cartridge injection mold capable of molding the aforementioned long, narrow staple cartridge and ensuring demolding quality. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a staple cartridge injection mold that can push the middle and both ends of the elongated staple cartridge through the first ejector pin and the second ejector pin respectively to achieve secondary ejection and demolding, and uses a slanted ejector to complete the forming and demolding of the concave and convex structure on the side of the elongated staple cartridge. This is beneficial for the injection molding of the elongated staple cartridge and ensures the demolding quality, making it convenient for production applications.

[0004] According to the embodiment of this utility model, the injection mold for a staple cartridge includes an upper mold mechanism and a lower mold mechanism. The lower mold mechanism is located below the upper mold mechanism and can be closed or opened with the upper mold mechanism. The upper mold mechanism has an upper mold core, and the lower mold mechanism has a lower mold core, a first top plate, and a second top plate. The lower mold core is provided with an insert assembly. When the upper mold mechanism and the lower mold mechanism are closed, the upper mold core, the lower mold core, and the insert assembly cooperate to define a cavity adapted to the elongated staple cartridge. The first top plate is located below the lower mold core and is provided with a plurality of first ejector pins and a plurality of inclined ejector pins. The second top plate is located below the first top plate and is provided with a plurality of second ejector pins. The plurality of second ejector pins are respectively located at the left and right ends of the cavity. Multiple first ejector pins are arranged at intervals along the left-right direction between the two ends of the cavity. The upper part of the first ejector pin and the upper part of the second ejector pin both pass through the insert assembly and can extend into the cavity. Multiple inclined ejector pins are respectively distributed on the front and rear sides of the cavity. The upper part of the inclined ejector pin is slidably inserted into the lower mold core along the inclined direction and can extend to the side wall of the cavity. The first top plate and the second top plate can move together, so that the first ejector pin and the second ejector pin jointly push the elongated pin cartridge on the insert assembly. The inclined ejector pin moves inclined to separate from the side wall of the elongated pin cartridge. The second top plate can be relative to the first top plate, so that the second ejector pin can push the elongated pin cartridge relative to the first ejector pin.

[0005] According to the embodiment of this utility model, the injection mold for the staple cartridge has at least the following beneficial effects: During use, the upper mold mechanism and the lower mold mechanism move relative to each other vertically to achieve mold closing and opening; during mold closing, the upper mold core, the lower mold core, and the insert assembly cooperate to define a cavity adapted to the elongated staple cartridge; during injection molding, the elongated staple cartridge is formed on the insert assembly, which utilizes the insert assembly to form through holes, strip grooves, and lower side contour structures on the elongated staple cartridge; the upper part of the inclined ejector extends to the side wall of the cavity to form the concave and convex contour structure of the side of the elongated staple cartridge; after injection molding is completed, the upper mold mechanism and the lower mold mechanism move relative to each other to open the mold, the upper mold core and the lower mold core separate, and then the first ejector plate and the second ejector plate move together. The first and second ejector pins move upward relative to the insert assembly. Multiple second ejector pins push the left and right ends of the elongated nail cartridge, while multiple first ejector pins push the middle area between the two ends of the elongated nail cartridge. Multiple first and second ejector pins together push the elongated nail cartridge on the insert assembly. At the same time, the first ejector plate drives the inclined ejector to tilt relative to the lower mold core, so that the inclined ejector gradually separates from the side wall of the elongated nail cartridge during the upward movement, thereby separating the elongated nail cartridge from the insert assembly and the inclined ejector, achieving a first ejection. Subsequently, the second ejector plate is driven to move relative to the first ejector plate, causing the second ejector pins to move upward relative to the first ejector pins, continuing to push the elongated nail cartridge upward, achieving a second ejection, and completing the second ejection and demolding of the elongated nail cartridge. This invention utilizes a first ejector pin and a second ejector pin to push the middle region and both ends of the elongated nail cartridge, respectively, to achieve secondary ejection and demolding. This ensures that the elongated nail cartridge is subjected to more uniform force along its length, preventing damage to the cartridge and guaranteeing demolding quality and reliability. Furthermore, the use of an inclined ejector pin completes the molding and demolding of the concave-convex structure on the side of the elongated nail cartridge, which is beneficial for the injection molding of the side structure. The inclined ejector pin separates from the side of the elongated nail cartridge during demolding, avoiding damage to the side structure and ensuring demolding quality, thus facilitating production and application.

[0006] According to some embodiments of the present invention, the insert assembly includes a first insert and a second insert. Multiple first inserts are provided, and the multiple first inserts are arranged in a left-right direction between the two ends of the cavity. A first through hole for the first ejector pin to pass through is defined between two adjacent first inserts. Multiple second inserts are provided at both the left and right ends of the cavity. Multiple second inserts located at the same end of the cavity are arranged in a front-back direction, and a second through hole for the second ejector pin to pass through is defined between two adjacent second inserts.

[0007] According to some embodiments of the present invention, the insert assembly further includes a plurality of third inserts. Both the first insert and the third insert are provided with a post for forming a through hole on the elongated nail cartridge. The third insert is sandwiched between every two adjacent first inserts, and the post on the first insert and the post on the third insert are staggered.

[0008] According to some embodiments of the present invention, the insert assembly further includes a positioning pin, each first insert is provided with at least three posts, multiple posts on the same first insert are spaced apart along the front-back direction, at least two third inserts are sandwiched between every two adjacent first inserts, and the positioning pin passes through multiple third inserts sandwiched between two adjacent first inserts along the front-back direction.

[0009] According to some embodiments of the present invention, the lower mold core includes two first fixing blocks and two second fixing blocks. The two first fixing blocks are respectively disposed on the front and rear sides of the insert assembly, and the two second fixing blocks are respectively disposed on the left and right ends of the insert assembly. The first fixing blocks and the second fixing blocks are connected and fixed so that the two first fixing blocks and the two second fixing blocks together surround and clamp the insert assembly.

[0010] According to some embodiments of the present invention, the lower mold mechanism is provided with a clutch structure, which enables the first top plate and the second top plate to be linked or delinked. When the first top plate and the second top plate are linked, the second top plate can drive the first top plate to move together through the clutch structure. When the first top plate and the second top plate are delinked, the second top plate can move relative to the first top plate.

[0011] According to some embodiments of this utility model, the clutch structure includes a linkage member, a pusher member, and a trigger member. The trigger member is fixedly disposed relative to the lower mold mechanism. The pusher member is fixedly connected to the second top plate and extends upward. The linkage member is slidably connected to the first top plate and can extend or retract relative to the side of the first top plate. When the linkage member is extended, the upper part of the pusher member can push the linkage member upward to move the first top plate upward together. The trigger member is provided with a triggering inclined surface, which is disposed corresponding to the movement path of the first top plate assembly. It can drive the linkage member from the extended state to the retracted state during the upward movement of the first top plate. When the linkage member is retracted, the pusher member releases its push on the linkage member.

[0012] According to some embodiments of the present invention, the clutch structure further includes an elastic element, which acts on the linkage element, and the linkage element can extend relative to the side of the first top plate under the action of the elastic element.

[0013] According to some embodiments of the present invention, a limiting structure is provided between the first top plate and the linkage member, the limiting structure being used to limit the telescopic movement stroke of the linkage member relative to the first top plate.

[0014] According to some embodiments of the present invention, a connecting block is provided on the first top plate, and a sliding groove is provided on the upper side of the connecting block. The sliding groove extends in a horizontal direction, and the groove cross-section is an inverted "T" shape structure that slides in cooperation with the lower part of the inclined top member.

[0015] Additional aspects and advantages of this 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. Attached Figure Description

[0016] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0017] Figure 1 This is a schematic diagram of the elongated staple cartridge in the background art of this utility model;

[0018] Figure 2 for Figure 1 A schematic diagram of the structure of a medium-length strip-shaped staple cartridge from another perspective;

[0019] Figure 3 This is a schematic diagram of the structure of the injection mold for the staple cartridge in an embodiment of this utility model;

[0020] Figure 4 for Figure 3 One of the schematic diagrams of a partial cross-section of a nail gun injection mold;

[0021] Figure 5 for Figure 3 Schematic diagram of a partial cross-section of the injection mold for the nail chamber (part two);

[0022] Figure 6 for Figure 3 A partial structural diagram of the lower and middle mold mechanism;

[0023] Figure 7 for Figure 6 Schematic diagram of the structure of the inlay component;

[0024] Figure 8 for Figure 7 A structural schematic diagram of the inlay component from another perspective;

[0025] Figure 9 for Figure 3 A schematic diagram of the clutch mechanism.

[0026] Figure label:

[0027] 10 elongated staple cartridge, 11 through hole, 12 strip groove;

[0028] Upper mold mechanism 100, upper mold core 110;

[0029] The components include: lower mold mechanism 200, cavity 201, first through hole 202, second through hole 203, slide groove 204, lower mold core 210, first fixing block 211, second fixing block 212, first top plate 220, first ejector pin 221, inclined ejector 222, connecting block 223, second top plate 230, second ejector pin 231, insert assembly 240, first insert 241, second insert 242, third insert 243, column 244, positioning pin 245, plate 246, lower mold fixing plate 250, guide plate 251, and base template 260.

[0030] Linkage component 310, limit groove 311, push component 320, trigger component 330, trigger inclined surface 331, elastic component 340, limit screw 350. Detailed Implementation

[0031] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote 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 and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0032] In the description of this utility model, it should be understood that if directional descriptions are involved, such as up, down, front, back, left, right, etc., indicating the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings, it is only for the convenience of describing this utility model and simplifying the description, and does 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, and therefore should not be construed as a limitation of this utility model.

[0033] In the description of this utility model, if words such as several, greater than, less than, exceeding, above, below, or within appear, several means one or more, multiple means two or more, greater than, less than, exceeding, etc. are understood to exclude the number itself, and above, below, or within are understood to include the number itself.

[0034] If the terms "first" and "second" are used only to distinguish technical features, they should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features indicated, or implicitly indicating the order of the technical features indicated.

[0035] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0036] Reference Figure 3 , Figure 4 , Figure 5 and Figure 6 A staple cartridge injection mold includes an upper mold mechanism 100 and a lower mold mechanism 200. The lower mold mechanism 200 is located below the upper mold mechanism 100 and can be closed or opened with the upper mold mechanism 100. The upper mold mechanism 100 has an upper mold core 110, and the lower mold mechanism 200 has a lower mold core 210, a first ejector plate 220, and a second ejector plate 230. The lower mold core 210 is provided with an insert assembly 240. When the upper mold mechanism 100 and the lower mold mechanism 200 are closed, the upper mold core 110, the lower mold core 210, and the insert assembly 240 cooperate to define a cavity 201 adapted to the elongated staple cartridge 10. The first ejector plate 220 is located below the lower mold core 210 and is provided with a plurality of first ejector pins 221 and a plurality of inclined ejector pins 222. The second ejector plate 230 is located below the first ejector plate 220 and is provided with a plurality of second ejector pins 231. The plurality of second ejector pins 231 are respectively disposed in the cavity 201. At the left and right ends of 01, multiple first ejector pins 221 are arranged at intervals in the left and right direction between the two ends of the cavity 201. The upper part of the first ejector pin 221 and the upper part of the second ejector pin 231 are both inserted through the insert assembly 240 and can extend to the cavity 201. Multiple inclined ejector pins 222 are respectively distributed on the front and rear sides of the cavity 201. The upper part of the inclined ejector pin 222 is slidably inserted into the lower mold core 210 in the inclined direction and can extend to the side wall of the cavity 201. The first top plate 220 and the second top plate 230 can move together, so that the first ejector pin 221 and the second ejector pin 231 jointly push the long strip-shaped nail cartridge 10 on the insert assembly 240. The inclined ejector pin 222 moves inclined to separate from the side wall of the long strip-shaped nail cartridge 10. The second top plate 230 can be relative to the first top plate 220, so that the second ejector pin 231 can push the long strip-shaped nail cartridge 10 relative to the first ejector pin 221.

[0037] Understandably, such as Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, the lower mold mechanism 200 is located below the upper mold mechanism 100. The lower mold mechanism 200 includes a lower mold fixing plate 250 and a base template 260. The lower mold core 210 is located on the lower mold fixing plate 250. The base template 260 is spaced below the lower mold fixing plate 250, forming a movement space between them. The first top plate 220 and the second top plate 230 are located in this movement space. The first top plate 220 is located above the second top plate 230. Multiple second ejector pins 231 are distributed at the left and right ends of the cavity 201, respectively. Multiple first ejector pins 221 are spaced at the ends of the cavity 201 in the left and right directions. Multiple inclined ejector members 222 are distributed at the front and rear sides of the cavity 201, respectively. The upper part of the inclined ejector member 222 is slidably inserted into the lower mold core 210 in the inclined direction and can extend to the side wall of the cavity 201.

[0038] In use, the upper mold mechanism 100 and the lower mold mechanism 200 move up and down relative to each other to achieve mold closing and opening. During mold closing, the upper mold core 110, the lower mold core 210, and the insert assembly 240 cooperate to define a cavity 201 that matches the elongated pin cartridge 10. During injection molding, the elongated pin cartridge 10 is formed on the insert assembly 240, which forms the through hole 11, the strip groove 12, and the lower contour structure on the elongated pin cartridge 10. The upper part of the inclined ejector 222 extends to the side wall of the cavity 201 to form the concave and convex contour structure on the side of the elongated pin cartridge 10. After injection molding is completed, the upper mold mechanism 100 and the lower mold mechanism 200 move relative to each other to open the mold, and the upper mold core 110 and the lower mold core 210 separate. Then, the first ejector plate 220 and the second ejector plate 230 are driven to move together, so that the first ejector pin 221 and the second ejector pin 231 are relative to each other. As the insert assembly 240 moves upward, multiple second ejector pins 231 push the left and right ends of the elongated nail cartridge 10, while multiple first ejector pins 221 push the middle area between the two ends of the elongated nail cartridge 10. The multiple first ejector pins 221 and multiple second ejector pins 231 together push the elongated nail cartridge 10 on the insert assembly 240. At the same time, the first top plate 220 drives the inclined ejector pin 222 to move at an angle relative to the lower mold core 210, so that the inclined ejector pin 222 gradually separates from the side wall of the elongated nail cartridge 10 during the upward movement, thereby separating the elongated nail cartridge 10 from the insert assembly 240 and the inclined ejector pin 222, achieving a first ejection. Subsequently, the second top plate 230 is driven to move relative to the first top plate 220, causing the second ejector pins 231 to move upward relative to the first ejector pins 221, continuing to push the elongated nail cartridge 10 upward, achieving a second ejection, and completing the second ejection and demolding of the elongated nail cartridge 10.

[0039] This invention uses a first ejector pin 221 and a second ejector pin 231 to push the middle region and both ends of the elongated nail cartridge 10 respectively, achieving secondary ejection and demolding. This ensures that the elongated nail cartridge 10 is subjected to more uniform force along its length, preventing damage to the nail cartridge and guaranteeing demolding quality and reliability. Furthermore, the inclined ejector pin 222 is used to complete the molding and demolding of the concave-convex structure on the side of the elongated nail cartridge 10, which is beneficial for the injection molding of the side structure of the elongated nail cartridge 10. The inclined ejector pin 222 separates from the side of the elongated nail cartridge 10 during demolding, avoiding damage to the side structure of the elongated nail cartridge 10 during demolding, ensuring demolding quality, and facilitating production application.

[0040] In practical applications, the specific structure of the upper mold mechanism 100 and the lower mold mechanism 200, as well as the specific number and distribution of ejector pins, can be set according to actual usage needs.

[0041] In some embodiments, the insert assembly 240 includes a first insert 241 and a second insert 242. The first insert 241 is provided in multiple ways, and the multiple first inserts 241 are arranged in the left-right direction between the two ends of the cavity 201. A first through hole 202 for the first ejector pin 221 to pass through is defined between two adjacent first inserts 241. The left and right ends of the cavity 201 are provided with multiple second inserts 242. The multiple second inserts 242 located at the same end of the cavity 201 are arranged in the front-back direction, and a second through hole 203 for the second ejector pin 231 to pass through is defined between two adjacent second inserts 242.

[0042] Understandably, such as Figure 4 , Figure 6 , Figure 7 and Figure 8 As shown, multiple first inserts 241 are arranged in the left-right direction between the left and right ends of the cavity 201. A first through hole 202 is defined between two adjacent first inserts 241 for the first ejector pin 221 to pass through, so that the upper part of the first ejector pin 221 can extend to the upper side of the insert assembly 240. Multiple second inserts 242 are provided at both the left and right ends of the cavity 201. Multiple second inserts 242 located at the same end of the cavity 201 are arranged in the front-back direction. A second through hole 203 is defined between two adjacent second inserts 242 for the second ejector pin 231 to pass through, so that the upper part of the second ejector pin 231 can extend to the upper side of the insert assembly 240. By setting the insert assembly 240 as multiple separate inserts, the difficulty of production and processing can be reduced. It is also more convenient to modify the mold in the future. The size of some inserts can be adjusted individually without wasting large workpieces, which helps to save material processing costs. In practical applications, the specific number of the first insert 241 and the second insert 242 can be set according to the actual needs of use.

[0043] In some embodiments, the insert assembly 240 further includes a plurality of third inserts 243, wherein both the first insert 241 and the third insert 243 are provided with post portions 244 for forming through holes 11 on the elongated nail cartridge 10, and a third insert 243 is sandwiched between every two adjacent first inserts 241, such that the post portions 244 on the first insert 241 and the post portions 244 on the third insert 243 are staggered.

[0044] Understandably, such as Figure 6 , Figure 7 and Figure 8 As shown, a third insert 243 is sandwiched between every two adjacent first inserts 241. Both the first insert 241 and the third insert 243 are provided with pillars 244, and the pillars 244 on the first insert 241 and the pillars 244 on the third insert 243 are staggered. When the mold is closed, the pillars 244 abut against the upper cavity wall of the cavity 201 to form through holes 11 on the elongated staple cartridge 10. The staggered distribution of the pillars 244 makes the layout of the formed through holes 11... The staggered arrangement satisfies the forming requirements of the through-hole 11 of the elongated nail cartridge 10. Multiple plates 246 are provided at both ends of the insert assembly 240, mounted on the second insert 242. These plates 246 are spaced apart along the front-to-back direction. During mold closing, the pillars 244 abut against the upper cavity wall of the cavity 201 to form the strip-shaped grooves 12 at both ends of the elongated nail cartridge 10, thus meeting the forming requirements of the strip-shaped grooves 12 of the elongated nail cartridge 10. By distributing the pillars 244 on the first insert 241 and the third insert 243, the difficulty of production and processing is reduced, facilitating production application. In practical applications, the number and specific structure of the pillars 244 and plates 246 can be set according to actual usage needs.

[0045] In some embodiments, the insert assembly 240 further includes a positioning pin 245. Each first insert 241 is provided with at least three posts 244. The multiple posts 244 on the same first insert 241 are distributed at intervals in the front-back direction. At least two third inserts 243 are sandwiched between every two adjacent first inserts 241. The positioning pin 245 passes through the multiple third inserts 243 sandwiched between two adjacent first inserts 241 in the front-back direction.

[0046] Understandably, such as Figure 7 and Figure 8As shown, each of the first inserts 241 has at least three post portions 244 spaced apart along the front-back direction. At least two third inserts 243 are sandwiched between every two adjacent first inserts 241. By using positioning pins 245 to pass through the multiple third inserts 243 sandwiched between two adjacent first inserts 241 along the front-back direction, the multiple third inserts 243 are positioned and connected together, which helps ensure proper installation and fit between the inserts and facilitates use. In practical applications, the positioning pins 245 can be set according to actual usage requirements.

[0047] In some embodiments, the lower mold core 210 includes two first fixing blocks 211 and two second fixing blocks 212. The two first fixing blocks 211 are respectively disposed on the front and rear sides of the insert assembly 240, and the two second fixing blocks 212 are respectively disposed on the left and right ends of the insert assembly 240. The first fixing blocks 211 and the second fixing blocks 212 are connected and fixed, so that the two first fixing blocks 211 and the two second fixing blocks 212 together surround and clamp the insert assembly 240.

[0048] Understandably, such as Figure 4 , Figure 5 and Figure 6 As shown, two first fixing blocks 211 are respectively located on the front and rear sides of the insert assembly 240, and two second fixing blocks 212 are respectively located on the left and right ends of the insert assembly 240. The first fixing blocks 211 and the second fixing blocks 212 are connected and fixed, so that the two first fixing blocks 211 and the two second fixing blocks 212 together surround and clamp the insert assembly 240, thereby realizing the installation and fixing of the split-type insert assembly 240. The structure is simple and easy to use. In practical applications, the specific structure of the first fixing blocks 211 and the second fixing blocks can be set according to the actual needs of use.

[0049] In some embodiments, the lower mold mechanism 200 is provided with a clutch structure, which enables the first top plate 220 and the second top plate 230 to be linked or delinked. When the first top plate 220 and the second top plate 230 are linked, the second top plate 230 can drive the first top plate 220 to move together through the clutch structure. When the first top plate 220 and the second top plate 230 are delinked, the second top plate 230 can move relative to the first top plate 220.

[0050] Understandably, such as Figure 3 , Figure 4 and Figure 9As shown, in use, a drive mechanism (which can be a drive unit on an injection molding machine) is connected to the lower side of the second top plate 230 to drive the second top plate 230 to move up and down. The lower mold mechanism 200 has clutch structures on both its left and right sides. By setting the clutch structures, after the upper mold mechanism 100 and the lower mold mechanism 200 open, the drive mechanism drives the second top plate 230 to move upwards. At this time, the clutch structures link the second top plate 230 and the first top plate 220 together, allowing the second top plate 230 to move through the clutch structures. The first top plate 220 moves together with the first ejector pin 221 and the second ejector pin 231, which together push the elongated nail cartridge 10 on the insert assembly 240 upwards. After the second top plate 230 moves a preset distance, the clutch structure disengages the linkage between the second top plate 230 and the first top plate 220. The drive mechanism continues to drive the second top plate 230 upwards, and the second top plate 230 moves upwards relative to the first top plate 220, causing the multiple second ejector pins 231 to push the left and right ends of the elongated nail cartridge 10 respectively. By adopting a clutch structure, it is possible to avoid the need for an additional drive to move the first top plate 220, which simplifies the drive structure and makes it easier to use.

[0051] In practical applications, in addition to setting a clutch structure, two drive units can be set to drive the first top plate 220 and the second top plate 230 respectively. When the two need to move together, the two drive units synchronously drive the first top plate 220 and the second top plate 230 to move. When the two need to move relative to each other, the drive unit that drives the first top plate 220 to move stops working, and the other drive unit drives the second top plate 230 to move. The specific settings can be set according to the actual use needs.

[0052] In some embodiments, the clutch structure includes a linkage 310, a pusher 320, and a trigger 330. The trigger 330 is fixedly disposed relative to the lower mold mechanism 200. The pusher 320 is fixedly connected to the second top plate 230 and extends upward. The linkage 310 is slidably connected to the first top plate 220 and can extend or retract relative to the side of the first top plate 220. When the linkage 310 is extended, the upper part of the pusher 320 can push the linkage 310 upward to move it, thereby driving the first top plate 220 to move upward together. The trigger 330 is provided with a trigger ramp 331, which is set according to the movement path of the first top plate 220 assembly. It can drive the linkage 310 from the extended state to the retracted state during the upward movement of the first top plate 220. When the linkage 310 is retracted, the pusher 320 releases its push on the linkage 310.

[0053] Understandably, such as Figure 3 , Figure 4 and Figure 9As shown, a pusher 320 is connected to the side of the second top plate 230. The pusher 320 extends upward. The linkage 310 is slidably connected to the side of the first top plate 220. The trigger 330 is fixedly connected to the lower mold fixing plate 250 and a trigger slope 331 is provided corresponding to the movement path of the first top plate 220. Under normal conditions, the linkage 310 extends out from the side of the first top plate 220. After mold opening, the second top plate 230 moves upward. At this time, the pusher 320 can push the extended linkage 310, thereby driving the first top plate 220 to move upward together, achieving linkage. When the first top plate 220 moves upward a preset distance, the extended linkage 310 contacts the triggering inclined surface 331. Utilizing the wedge structure principle, the longitudinal movement is converted into lateral movement, thereby driving the linkage 310 to retract relative to the side of the first top plate 220, achieving state switching. At this time, the pusher 320 cannot push the retracted linkage 310, and the second top plate 230 will continue to move upward, resulting in relative movement with the first top plate 220, thus disengaging the linkage. The above structure is simple, reasonable, and easy to use.

[0054] In practical applications, in addition to the above-mentioned clutch structure, a spring can be set between the first top plate 220 and the second top plate 230, and a limiting member can be set corresponding to the first top plate 220. Utilizing the elastic force of the spring, the first top plate 220 is pushed upward when the second top plate 230 moves upward, thus achieving linkage. When the first top plate 220 moves to abut against the limiting member, the first top plate 220 cannot continue to move upward due to the travel limitation of the limiting member. Therefore, the second top plate 230, which continues to move upward, will move relative to the first top plate 220 under the compression of the spring, thus disengaging the linkage. Of course, in addition to the above structure, clutch control can also be achieved by setting an electromagnet. For example, the extension and retraction of the linkage member 310 can be controlled by the on and off of the electromagnet, thereby achieving linkage and disengagement between the pushing member 320 and the linkage member 310. The specific settings can be adjusted according to actual usage needs.

[0055] In some embodiments, the clutch structure further includes an elastic element 340, which acts on a linkage element 310, and the linkage element 310 can extend relative to the side of the first top plate 220 under the action of the elastic element 340.

[0056] Understandably, such as Figure 4 and Figure 9As shown, the elastic element 340 is a spring, with its two ends acting on the linkage element 310 and the first top plate 220 respectively. This causes the linkage element 310 to tend to move away from the first top plate 220. Under the action of the elastic element 340, the linkage element 310 extends out relative to the side of the first top plate 220, so that after the first top plate 220 and the second top plate 230 are reset, the linkage element 310 can be restored and extended, making it convenient to use. In practical applications, the extension of the linkage element 310 can also be achieved by manual operation by the worker, and the specific method can be changed according to the actual needs of use.

[0057] In some embodiments, a limiting structure is provided between the first top plate 220 and the linkage 310, the limiting structure being used to limit the telescopic movement stroke of the linkage 310 relative to the first top plate 220.

[0058] Understandably, such as Figure 4 and Figure 9 As shown, the limiting structure includes a limiting groove 311 and a limiting screw 350. The limiting groove 311 is located on the linkage member 310 and extends in the left-right direction. The limiting screw 350 passes through the limiting groove 311, passes through the linkage member 310, and connects to the first top plate 220. The upper part of the limiting screw 350 is located in the limiting groove 311. When the linkage member 310 moves left or right, the limiting screw 350 moves along the limiting groove 311 and limits the movement stroke of the linkage member 310. This helps ensure the reliability of the movement of the linkage member 310, avoids excessive movement, and facilitates use. In practical applications, in addition to the above structure, the limiting structure can also include two limiting blocks. The two limiting blocks are respectively set at the two ends of the movement stroke of the linkage member 310, so as to use the limiting blocks to prevent the linkage member 310 from moving beyond the preset stroke range and achieve the limiting effect. The specific settings can be adjusted according to actual usage needs.

[0059] In some embodiments, a connecting block 223 is provided on the first top plate 220, and a sliding groove 204 is provided on the upper side of the connecting block 223. The sliding groove 204 extends in the horizontal direction, and the groove cross section of the sliding groove 204 has an inverted "T" shaped structure and slides in cooperation with the lower part of the inclined top member 222.

[0060] Understandably, such as Figure 5 and Figure 6As shown, the groove 204 extends horizontally and slides into the lower part of the inclined pusher 222. By setting the groove 204 to an inverted "T" shape, the longitudinal movement of the inclined pusher 222 and the connecting block 223 is restricted, allowing the connecting block 223 to both push the inclined pusher 222 upwards and drive it downwards. This facilitates the repositioning of the inclined pusher 222 and ensures reliable movement. In practical applications, in addition to the above structure, a guide rail can be provided on the upper side of the connecting block 223, and a matching guide groove can be provided on the lower part of the inclined pusher 222 to achieve a sliding fit between them. The specific design can be varied according to actual usage requirements.

[0061] In some embodiments, a guide plate 251 is provided on the lower side of the lower mold fixing plate 250, and the first ejector pin 221, the second ejector pin 231, and the connecting block 223 all pass through the guide plate 251. It is understood that, as Figure 4 , Figure 5 and Figure 6 As shown, by setting the guide plate 251 to provide guidance and limit for the up and down movement of the first ejector pin 221, the second ejector pin 231, and the connecting block 223, the reliability of their movement can be improved and their use can be facilitated. In actual applications, the specific structure of the guide plate 251 can be set according to the actual needs of use.

[0062] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A staple cartridge injection mold, characterized in that, include: Upper mold mechanism, wherein the upper mold mechanism has an upper mold core; A lower mold mechanism is located below the upper mold mechanism and can be closed or opened with the upper mold mechanism. The lower mold mechanism has a lower mold core, a first top plate, and a second top plate. The lower mold core is provided with an insert assembly. When the upper mold mechanism and the lower mold mechanism are closed, the upper mold core, the lower mold core, and the insert assembly cooperate to define a cavity adapted to the elongated pin magazine. The first top plate is located below the lower mold core and is provided with a plurality of first ejector pins and a plurality of inclined ejector pins. The second top plate is located below the first top plate and is provided with a plurality of second ejector pins. The plurality of second ejector pins are respectively located at the left and right ends of the cavity, and the plurality of first ejector pins are arranged at intervals along the left and right direction. Between the two ends of the cavity, the upper part of the first ejector pin and the upper part of the second ejector pin both pass through the insert assembly and can extend into the cavity. A plurality of inclined ejector pins are respectively distributed and arranged corresponding to the front and rear sides of the cavity. The upper part of the inclined ejector pin is slidably inserted into the lower mold core along the inclined direction and can extend to the side wall of the cavity. The first top plate and the second top plate can move together, so that the first ejector pin and the second ejector pin jointly push the elongated pin cartridge on the insert assembly. The inclined ejector pin moves inclined to separate from the side wall of the elongated pin cartridge. The second top plate can be relative to the first top plate, so that the second ejector pin can push the elongated pin cartridge relative to the first ejector pin.

2. The staple cartridge injection mold according to claim 1, characterized in that, The insert assembly includes a first insert and a second insert. Multiple first inserts are provided, and the multiple first inserts are arranged in a left-right direction between the two ends of the cavity. A first through hole for the first ejector pin to pass through is defined between two adjacent first inserts. Multiple second inserts are provided at both the left and right ends of the cavity. Multiple second inserts located at the same end of the cavity are arranged in a front-back direction, and a second through hole for the second ejector pin to pass through is defined between two adjacent second inserts.

3. The staple cartridge injection mold according to claim 2, characterized in that, The insert assembly further includes a plurality of third inserts, wherein both the first insert and the third insert are provided with a post for forming a through hole on the elongated staple cartridge, and the third insert is sandwiched between every two adjacent first inserts, such that the post on the first insert and the post on the third insert are staggered.

4. The staple cartridge injection mold according to claim 3, characterized in that, The insert assembly further includes a positioning pin. Each first insert has at least three posts. Multiple posts on the same first insert are spaced apart in the front-back direction. At least two third inserts are sandwiched between every two adjacent first inserts. The positioning pin passes through multiple third inserts sandwiched between two adjacent first inserts in the front-back direction.

5. The staple cartridge injection mold according to claim 2, characterized in that, The lower mold core includes two first fixing blocks and two second fixing blocks. The two first fixing blocks are respectively located on the front and rear sides of the insert assembly, and the two second fixing blocks are respectively located on the left and right ends of the insert assembly. The first fixing blocks and the second fixing blocks are connected and fixed so that the two first fixing blocks and the two second fixing blocks together surround and clamp the insert assembly.

6. The staple cartridge injection mold according to claim 1, characterized in that, The lower mold mechanism is provided with a clutch structure, which enables the first top plate and the second top plate to be linked or delinked. When the first top plate and the second top plate are linked, the second top plate can drive the first top plate to move together through the clutch structure. When the first top plate and the second top plate are delinked, the second top plate can move relative to the first top plate.

7. The staple cartridge injection mold according to claim 6, characterized in that, The clutch structure includes a linkage, a pusher, and a trigger. The trigger is fixedly disposed relative to the lower mold mechanism. The pusher is fixedly connected to the second top plate and extends upward. The linkage is slidably connected to the first top plate and can extend or retract relative to the side of the first top plate. When the linkage is extended, the upper part of the pusher can push the linkage upward to move the first top plate upward together. The trigger has a trigger slope, which is set to correspond to the movement path of the first top plate assembly. It can drive the linkage from the extended state to the retracted state during the upward movement of the first top plate. When the linkage is retracted, the pusher releases its push on the linkage.

8. The staple cartridge injection mold according to claim 7, characterized in that, The clutch structure also includes an elastic element that acts on the linkage element, and the linkage element can extend relative to the side of the first top plate under the action of the elastic element.

9. The staple cartridge injection mold according to claim 7, characterized in that, A limiting structure is provided between the first top plate and the linkage component, the limiting structure being used to limit the telescopic movement stroke of the linkage component relative to the first top plate.

10. The staple cartridge injection mold according to claim 1, characterized in that, The first top plate is provided with a connecting block, and the upper side of the connecting block is provided with a sliding groove. The sliding groove extends in the horizontal direction, and the groove cross section is in the shape of an inverted "T" and slides in cooperation with the lower part of the inclined top member.

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