Injection mold feed port slag removal mechanism and slag removal method

Abstract

The application relates to the technical field of integrated circuit plastic packaging, and particularly discloses an injection mold feed inlet slag removal mechanism and a slag removal method, which comprise: a feed push head arranged in a vertical lifting and moving mode in a feed cylinder, and a lower push rod connected to the bottom center of the feed push head, the lower push rod providing power for the vertical lifting of the feed push head; and a positioning groove arranged on the middle section outer wall of the feed push head, the positioning groove is arranged in an annular structure, and a Teflon ring is sleeved in the positioning groove and tightly combined with the inner wall of the feed cylinder. The injection mold feed inlet slag removal mechanism and the slag removal method are provided with the tightly combined Teflon sealing ring structure, the residual slag on the inner wall of the feed cylinder is scraped clean when the injection head runs up and down, the inner wall of the feed cylinder is free of residual slag, and the effect of preventing abrasion is achieved.

Description

Technical Field

[0001] This invention relates to the field of integrated circuit molding technology, specifically to a slag removal mechanism and method for the feed inlet of an injection mold. Background Technology

[0002] In integrated circuit molding, the material cake needs to be placed in a barrel and heated to melt it. Then, the molten material cake is squeezed upward through the injection head, so that it flows into the mold cavity through the runner. After cooling, it solidifies, thus achieving the purpose of molding the product.

[0003] During the process of the injection head extruding the molten material, the injection head needs to move up and down in the barrel to achieve the injection effect. Therefore, there is a tiny gap between the barrel and the injection head. During the extrusion process, the large pressure will cause the molten material to penetrate into the gap between the barrel and the injection head. After the molten material cools down, it becomes quite hard. The molten material remaining in the barrel will cause wear to the barrel and the injection head during normal use, reducing the service life of the barrel and the injection head.

[0004] To solve this problem, it is urgent to innovate the design of the existing injection mold feed inlet mechanism;

[0005] A wear-resistant technology was studied, in which an annular groove was machined at the upper end of the injection head, and a Teflon sealing ring was installed on the annular groove. The sealing ring fits tightly against the inner wall of the barrel. As the injection head moves up and down, it scrapes away the residue remaining on the inner wall of the barrel, leaving no residue on the inner wall of the barrel, thereby achieving the effect of wear resistance. Summary of the Invention

[0006] The purpose of this invention is to provide a slag removal mechanism and method for the injection mold feed port, in order to solve the problem mentioned in the background art that, during the injection molding process, the pressure inside the cavity increases as the feed pusher moves upward after mold closing, and the material above the feed pusher is preheated and is fluid. Under pressure, some of it flows down along the gap between the feed pusher and the material channel and adheres to the inner wall of the material channel. After cooling, it becomes solid residue, causing wear to the feed pusher in subsequent operations.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a slag removal mechanism and method for the feed inlet of an injection mold, comprising:

[0008] The feed pusher is installed inside the material cylinder and moves vertically up and down. A lower push rod is connected to the center of the bottom of the feed pusher, which provides power for the vertical movement of the feed pusher.

[0009] It also includes: a positioning groove, which is set on the outer wall of the middle section of the feed pusher. The positioning groove is arranged in a ring structure, and a Teflon ring is sleeved inside the positioning groove. The Teflon ring is tightly fitted to the inner wall of the feed cylinder.

[0010] Preferably, the Teflon ring is arranged in a segmented semi-circular ring structure, and two semi-circular Teflon rings are joined end to end to form a complete circular ring structure. A washer is provided on the inner side of the Teflon ring, and a connecting rod is vertically fixed in the middle of the inner side of the Teflon ring. The connecting rod and the positioning groove are a through-type disassembly and installation structure that fits together.

[0011] Preferably, the feed pusher and the lower push rod are designed for disassembly and installation, and a limiting component for connecting rods is provided at the top center of the feed pusher. This limiting component enables the disassembly and replacement of the Teflon ring through the connecting rods. There are two types of limiting components.

[0012] Preferably, the limiting member of the first type includes a positioning cavity inside the center of the top of the feeding pusher, a positioning cavity fixed at the center of the bottom of the positioning cavity, and a top cover plate movably installed on the top of the positioning cavity. A threaded rod is vertically fixed at the center of the bottom of the top cover plate, wherein the threaded rod is coaxially arranged with the positioning sleeve.

[0013] A fixing plate is fixed on the inner wall of both the left and right sides of the positioning cavity. A limit block is installed through the middle of the fixing plate, and the limit block is used to limit the positioning hole set at the end of the connecting rod.

[0014] Preferably, the connecting rod and the positioning cavity are a horizontally penetrating disassembly and installation structure, and the connecting rod and the limiting block are vertically distributed. The limiting block and the fixing plate are a penetrating vertical telescopic structure, and an elastic element is provided at the penetrating connection between the limiting block and the fixing plate. The top of the limiting block is fitted and connected to the bottom of the top cover plate, and a ball bearing structure is provided on the top of the limiting block to reduce the contact friction between the limiting block and the top cover plate.

[0015] Preferably, the top cover plate is vertically coaxial with the threaded rod and the positioning sleeve, wherein the threaded rod and the positioning sleeve are connected by a through thread, and the top of the top cover plate is coplanar with the top of the feed pusher, and the edges of the two are in contact with each other.

[0016] Preferably, a downward pressure rod plug is movably installed through the bottom of the limiting block, and an expansion rubber block is movably installed through the side of the limiting block. An elastic element is fixed between the expansion rubber block and the inner wall of the limiting block. The downward pressure rod plug and the expansion rubber block are relatively telescopic structures that fit and seal with the limiting block. Hydraulic oil is provided inside the limiting block. The expansion rubber block improves the limiting block's stability in limiting and filling the positioning hole at the end of the connecting rod.

[0017] Preferably, the limiting component of the second type includes a sealing cavity at the center of the top of the feed pusher. The sealing cavity is embedded in the feed pusher, and the tops of the two are coplanar. A positioning screw is threaded through the center of the top of the sealing cavity. The positioning screw is used to engage and limit the wedge block set at the end of the connecting rod. The connecting rod and the sealing cavity are arranged laterally through each other, and a positioning magnet is set on the wedge block.

[0018] Preferably, a connecting cylinder is fixedly installed through the sealing cavity directly below the positioning screw and inside the feeding pusher, and a valve is fixedly installed at the lower end of the connecting cylinder.

[0019] Preferably, a telescopic rod is coaxially installed through the bottom center of the positioning screw, an elastic element is fixed between the top of the telescopic rod and the inside of the positioning screw, and damping rubber blocks are distributed at equal angles on the side wall of the positioning screw. Furthermore, the middle section of the telescopic rod is provided with an arc-shaped segmented structure to realize the convex inner wall compression and propulsion of the damping rubber blocks.

[0020] This invention also discloses a slag removal mechanism for the injection mold inlet and a slag removal method after slag removal at the injection mold inlet, the specific steps of which are as follows:

[0021] S1: A positioning groove is opened in the middle section of the feeding pusher, and a Teflon ring is fixedly installed in the positioning groove. The feeding pusher and the Teflon ring on it are guided into the material channel of the injection mold barrel, so that the Teflon ring is tightly fitted to the inner wall of the material channel.

[0022] S2: The material inside the barrel and channel is heated and softened into a fluid state. The feed pusher moves upward under the action of the lower push rod and pushes the material into the mold for injection molding. During this process, some material adheres to the inner wall of the barrel and channel.

[0023] S3: After injection molding is completed and the mold is opened, the feeding pusher moves downward to scrape off the residue on the inner wall of the material channel for the first time. This part of the residue falls into the bottom of the equipment.

[0024] S4: The feed pusher moves upward again to scrape the residue on the inner wall of the material channel for the second time. This part of the residue moves to the surface of the lower injection mold and is blown away by the operator using an air gun.

[0025] S5: The feed pusher head resets and waits for the next push action.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows: The slag removal mechanism and method for the injection mold inlet are equipped with a tightly fitted Teflon sealing ring structure, which scrapes away the residue remaining on the inner wall of the barrel while the injection head moves up and down, leaving no residue on the inner wall of the barrel, thereby achieving the effect of wear prevention. The specific method is as follows:

[0027] 1. By opening a positioning groove on the feed pusher and installing a ring-shaped Teflon sealing ring in the positioning groove, both the Teflon sealing ring and the feed pusher are located in the material channel of the injection barrel, and the Teflon ring is tightly fitted to the inner wall of the material channel. When the feed pusher moves up and down, it uses pressure to guide the fluid material used for injection into the injection mold. The Teflon sealing ring achieves the cleaning action of the inner wall of the material channel, effectively preventing the fluid material from adhering and cooling into solid residue that remains in the inner wall of the material channel and causing wear during the movement of the feed pusher.

[0028] 2. To prevent damage to the Teflon sealing ring during use, it needs to be disassembled and reassembled. To facilitate the replacement of the Teflon sealing ring, a limiting and disassembling mechanism for the Teflon sealing ring is set. This mechanism uses a semi-circular Teflon sealing ring structure with a connecting rod in the middle of the inner wall of the sealing ring, extending to the middle of the feed pusher. By limiting the connecting rod, the Teflon ring can be positioned or disassembled. The limiting of the connecting rod is achieved firstly through a first-type limiting mechanism, utilizing the threaded assembly of the top cover plate and the threaded rod. Downward pressure is used to move the limiting block up and down, guiding it into the positioning hole of the connecting rod, thus achieving the limiting effect. Furthermore, during the downward pressing of the limiting block, the bottom pressing rod plug... The contraction movement, under hydraulic pressure, pushes the expanding rubber block outward, increasing the lateral width of the expanding rubber block and the limiting block. This allows the expanding rubber block and the limiting block to completely fill the positioning hole of the connecting rod, improving the limiting stability of the connecting rod and preventing large differences in the positioning holes on the connecting rod due to manufacturing processes from affecting the limiting stability of the connecting rod. At the same time, the second type of limiting mechanism only needs to use the threaded connection of the positioning screw to lift and insert it into the wedge at the end of the connecting rod. The mortise and tenon joint action achieves the limiting effect of the connecting rod and the Teflon ring. Meanwhile, the mutual squeezing action of the telescopic rod on the positioning screw and the damping rubber block can also cause the damping rubber block to bulge outward and fill the wedge at the end of the connecting rod, improving the limiting stability of the Teflon ring.

[0029] 3. Simultaneously, the aforementioned second type of limiting mechanism also includes a removal component to address situations where the Teflon ring, due to long-term use, undergoes localized deformation, causing it to become stuck and difficult to remove during replacement. This component specifically includes a connecting cylinder and valves. When the Teflon ring is difficult to remove, the positioning screw can be directly removed, and an external hydraulic pressurization assembly pipeline can be connected to the threaded installation position of the positioning screw. Alternatively, without removing the positioning screw, the external hydraulic pressurization assembly pipeline can be connected via the valve. Through hydraulic pressure, oil pressure is introduced into the sealed cavity, and the hydraulic pressure propels the Teflon ring and connecting rod in the opposite direction. Furthermore, the oil fills the gap at the connection between the Teflon ring and the feed pusher, achieving rapid removal of the Teflon ring and connecting rod under hydraulic pressure. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the front structure of the present invention;

[0031] Figure 2 This is a schematic diagram of the front section structure of Embodiment 2 of the present invention;

[0032] Figure 3 This is a schematic diagram of the Teflon ring installation structure in Embodiment 1 of the present invention;

[0033] Figure 4 This is a schematic diagram of the installation structure of the limiting block of the present invention;

[0034] Figure 5 This is a schematic diagram of the internal structure of the limiting block of the present invention;

[0035] Figure 6 This is a schematic diagram of the front section structure of Embodiment 3 of the present invention;

[0036] Figure 7 This is a schematic diagram of the Teflon ring installation structure in Embodiment 3 of the present invention;

[0037] Figure 8 This is a schematic diagram of the wedge block structure of the present invention;

[0038] Figure 9 This is a schematic diagram of the positioning screw structure of the present invention;

[0039] Figure 10 This is a schematic diagram of the internal structure of the positioning screw of the present invention.

[0040] In the diagram: 1. Feed pusher; 2. Lower push rod; 3. Positioning groove; 4. Teflon ring; 5. Washer; 6. Connecting rod; 7. Positioning cavity; 8. Positioning sleeve; 9. Top cover plate; 10. Threaded rod; 11. Fixing plate; 12. Limiting block; 13. Lower pressure rod plug; 14. Expanding rubber block; 15. Spring; 16. Sealing cavity; 17. Positioning screw; 1701. Telescopic rod; 1702. Damping rubber block; 18. Wedge; 19. Connecting cylinder; 20. Valve. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] Example 1

[0043] Please see Figure 1 This invention provides a technical solution: a slag removal mechanism and method for the feed inlet of an injection mold, comprising:

[0044] The feeding pusher 1 is set inside the material cylinder and moves vertically up and down. A lower push rod 2 is connected to the bottom center of the feeding pusher 1. The lower push rod 2 provides power for the vertical lifting of the feeding pusher 1. The feeding pusher 1 also includes a positioning groove 3, which is set on the outer wall of the middle section of the feeding pusher 1. The positioning groove 3 is set in a ring structure, and a Teflon ring 4 is sleeved inside the positioning groove 3. The Teflon ring 4 is tightly fitted to the inner wall of the feeding cylinder.

[0045] By setting a Teflon ring 4 in the middle section of the lower push rod 2, the Teflon ring 4 moves along the inner wall of the feed cylinder with the lower push rod 2 during use. The Teflon ring 4 fits tightly against the inner wall of the material channel, thereby achieving the cleaning action of the inner wall of the material channel.

[0046] Example 2

[0047] Adopting such Figure 2-5 As shown, based on Embodiment 1, the present invention also provides a detachable Teflon ring 4 and a first-type limiting component for the Teflon ring 4, which facilitates the replacement of the Teflon ring 4 when it is damaged. Specifically:

[0048] The Teflon ring 4 is set in a segmented semi-circular ring structure, and two semi-circular Teflon rings 4 are joined end to end to form a complete ring structure. A washer 5 is set on the inner side of the Teflon ring 4, and a connecting rod 6 is vertically fixed in the middle of the inner side of the Teflon ring 4. The connecting rod 6 and the positioning groove 3 are a through-type disassembly and installation structure that fits closely. The feeding push head 1 and the lower push rod 2 are set in a disassembly and installation structure, and a limiting component for the connecting rod 6 is set at the top center of the feeding push head 1. This limiting component realizes the disassembly and replacement of the Teflon ring 4 through the connecting rod 6. With the combination of the Teflon ring 4 and the connecting rod 6, when the Teflon ring 4 needs to be replaced, it is only necessary to determine whether the connecting rod 6 is limited or not to achieve the disassembly and replacement of the Teflon ring 4, which facilitates the stable installation of the Teflon ring 4 inside the positioning groove 3.

[0049] like Figure 2-4The technical solution shown includes a first-type limiting component comprising a positioning cavity 7 inside the top center of the feed pusher 1, a fixed positioning cavity 7 at the bottom center of the positioning cavity 7, and a top cover plate 9 movably mounted on the top of the positioning cavity 7. A threaded rod 10 is vertically fixed at the bottom center of the top cover plate 9, wherein the threaded rod 10 is coaxially arranged with the positioning sleeve 8. Fixing plates 11 are fixed on the left and right inner walls of the positioning cavity 7, and a limiting block 12 is movably mounted through the middle of the fixing plate 11, wherein the limiting block 12 is used for through-limiting the positioning hole provided at the end of the connecting rod 6. The connecting rod 6 and the positioning cavity 7 are disassembled and installed in a transversely penetrating manner. The structure consists of a connecting rod 6 and a limiting block 12, which are vertically distributed. The limiting block 12 and the fixing plate 11 are vertically telescopic structures that pass through each other. An elastic element is provided at the connection between the limiting block 12 and the fixing plate 11. The top of the limiting block 12 is fitted and connected to the bottom of the top cover plate 9. A ball bearing structure is provided on the top of the limiting block 12 to reduce the contact friction between the limiting block 12 and the top cover plate 9. The top cover plate 9 is vertically coaxially distributed with the threaded rod 10 and the positioning sleeve 8. The threaded rod 10 and the positioning sleeve 8 are connected by a threaded connection that passes through each other. The top of the top cover plate 9 is coplanar with the top of the feeding push head 1, and their edges are fitted together.

[0050] When the Teflon ring 4 and the connecting rod 6 on the feed pusher 1 are limited, only the threaded connection between the threaded rod 10 and the positioning sleeve 8 is needed. As the two are connected by threads, the top cover plate 9 at the upper end of the threaded rod 10 rises and falls synchronously. When it falls, the bottom outer wall presses down on the limiting block 12, so that the limiting block 12 passes through the fixing plate 11 and moves downward. When it moves and presses down, the limiting block 12 is directly inserted into the positioning hole at the end of the connecting rod 6, so as to achieve the installation limiting effect of the connecting rod 6 and the Teflon ring 4.

[0051] To prevent discrepancies in the installation position and size of the positioning holes on the connecting rod 6 due to production and processing techniques, which could lead to gaps between the positioning holes and the limiting block 12 at the connection point and cause wobbling during the installation of the connecting rod 6 and the Teflon ring 4, a downward pressure plug 13 is installed through the bottom of the limiting block 12, and an expansion rubber block 14 is installed through the side of the limiting block 12. An elastic element is fixed between the expansion rubber block 14 and the inner wall of the limiting block 12. The downward pressure plug 13 and the expansion rubber block 14 are all relatively telescopic structures that fit and seal with the limiting block 12. Hydraulic oil is provided inside the limiting block 12. The expansion rubber block 14 improves the stability of the limiting block 12 in limiting and filling the positioning holes at the rod end of the connecting rod 6.

[0052] In such Figure 5As shown, when the limiting block 12 is inserted into the positioning hole at the end of the connecting rod 6 and continues to move downward, the pressing rod plug 13 at the bottom of the limiting block 12 contacts and squeezes the inner wall of the positioning cavity 7, causing the upper end of the pressing rod plug 13 to extend into the limiting block 12. Under the action of hydraulic pressure, the expanding rubber block 14 on the side of the limiting block 12 protrudes outward, and the overlapping width of the expanding rubber block 14 and the limiting block 12 changes, completely filling the connection gap between the limiting block 12 and the positioning hole, making the installation of the connecting rod 6 and the Teflon ring 4 more stable.

[0053] Example 3

[0054] Adopting such Figure 6-10 The technical solution shown in this invention discloses a second type of limiting member;

[0055] The second type of limiting component includes a sealing cavity 16 at the top center of the feed pusher 1. The sealing cavity 16 is embedded in the feed pusher 1, and the tops of both are coplanar. A positioning screw 17 is threaded through at the top center of the sealing cavity 16. The positioning screw 17 is used to engage and limit the wedge 18 at the end of the connecting rod 6. The connecting rod 6 and the sealing cavity 16 are arranged laterally through each other, and a positioning magnet is provided on the wedge 18. The sealing cavity 16 directly below the positioning screw 17 and the feed pusher 16 are connected to the sealing cavity 16. A connecting cylinder 19 is fixedly installed inside the material pusher head 1, and a valve 20 is fixed at the lower end of the connecting cylinder 19; a telescopic rod 1701 is coaxially installed at the bottom center of the positioning screw 17, an elastic element is fixed between the top of the telescopic rod 1701 and the inside of the positioning screw 17, and damping rubber blocks 1702 are distributed at equal angles on the side wall of the positioning screw 17, and an arc-shaped segmented structure is set in the middle section of the telescopic rod 1701 to realize the convex inner wall extrusion and propulsion of the damping rubber block 1702;

[0056] After installation, the connecting rod 6 and Teflon ring 4 can be directly installed via the positioning screw 17, the end of which passes through the wedge 18. The connection between the connecting rod 6 and Teflon ring 4 and the wedge 18 achieves direct positioning. At the same time, the positioning screw 17 is continuously pushed into the connecting cylinder 19. Under relative pressure, the telescopic rod 1701 and the positioning screw 17 retract relative to each other, and the telescopic rod 1701 pushes and squeezes the damping block 1702 in the opposite direction. This causes the damping block 1702 to bulge out from the outer wall of the positioning screw 17. The bulging damping block 1702 fills the through gap between the positioning screw 17 and the wedge 18, achieving the positioning effect of the wedge 18. Furthermore, the end of the wedge 18 is provided with a magnet that has mutual magnetic properties, which facilitates the initial positioning of the connecting rod 6 and Teflon ring 4 during installation.

[0057] Furthermore, when the connecting rod 6 and Teflon ring 4 are partially deformed due to long-term use and are inconvenient to remove, an external hydraulic pressurization component pipeline can be connected through the installation position of the positioning screw 17 or the position of the valve 20. Under the action of hydraulic pressure, the hydraulic fluid is introduced into the sealing cavity 16, and the hydraulic pressure is used to push the connecting rod 6 and Teflon ring 4 in the reverse direction, making it convenient to remove the connecting rod 6 and Teflon ring 4.

[0058] Example 4

[0059] The present invention also provides a slag removal method for a slag removal mechanism at the injection mold inlet, the specific steps of which are as follows:

[0060] S1: A positioning groove 3 is opened in the middle section of the feeding pusher 1, and a Teflon ring 4 is fixedly installed in the positioning groove 3. The feeding pusher 1 and the Teflon ring 4 on it are guided into the material channel of the injection mold, so that the Teflon ring 4 is tightly attached to the inner wall of the material channel.

[0061] S2: The material inside the material channel of the barrel is heated and softened into a fluid state. The feed pusher 1 moves upward under the action of the lower push rod 2 and pushes the material into the mold for injection molding. During this process, some material adheres to the inner wall of the material channel.

[0062] S3: After injection molding is completed and the mold is opened, the feed pusher 1 moves downward to scrape off the residue on the inner wall of the material channel for the first time. This part of the residue falls into the bottom of the equipment.

[0063] S4: The feed pusher 1 moves upward again to scrape the residue on the inner wall of the material channel for the second time. This part of the residue moves to the surface of the lower injection mold and is blown away by the operator using an air gun.

[0064] S5: Feed pusher 1 resets, waiting for the next push action.

[0065] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A slag removal mechanism for the feed inlet of an injection mold, comprising: The feeding pusher (1) is installed inside the material cylinder and moves vertically up and down. A lower push rod (2) is connected to the center of the bottom of the feeding pusher (1). The lower push rod (2) provides power for the vertical lifting and lowering of the feeding pusher (1). Its characteristic is that it further includes: The positioning groove (3) is set on the outer wall of the middle section of the feed pusher (1). The positioning groove (3) is set in a ring structure, and a Teflon ring (4) is sleeved inside the positioning groove (3). The Teflon ring (4) is tightly fitted to the inner wall of the feed cylinder. The Teflon ring (4) is set in a segmented semi-circular ring structure, and the two semi-circular Teflon rings (4) are joined end to end to form a complete ring structure. A washer (5) is set on the inner side of the Teflon ring (4), and a connecting rod (6) is vertically fixed in the middle of the inner side of the Teflon ring (4). A limiting component of the connecting rod (6) is set at the top center of the feed pusher (1). The limiting component realizes the disassembly and replacement of the Teflon ring (4) through the connecting rod (6). The limiting component of the first type includes a positioning cavity (7) inside the top center of the feed pusher (1). A positioning cavity (7) is fixed at the bottom center of the positioning cavity (7), and a top cover plate (9) is movably installed on the top of the positioning cavity (7). A threaded rod (10) is vertically fixed at the bottom center of the top cover plate (9), wherein the threaded rod (10) is coaxially set with the positioning sleeve (8). A fixing plate (11) is fixed on the inner wall of the left and right sides of the positioning cavity (7). A limiting block (12) is installed through the middle of the fixing plate (11). The limiting block (12) is used to limit the positioning hole set at the end of the connecting rod (6). A pressing rod plug (13) is installed through the bottom of the limiting block (12). An expanding rubber block (14) is installed through the side of the limiting block (12). An elastic element is fixed between the expanding rubber block (14) and the inner wall of the limiting block (12). The pressing rod plug (13) and the expanding rubber block (14) are relatively telescopic structures that fit and seal with the limiting block (12). Hydraulic oil is provided in the limiting block (12). The stability of the limiting block (12) in limiting and filling the positioning hole set at the end of the connecting rod (6) is improved by expanding the rubber block (14).

2. The slag removal mechanism for the injection mold feed inlet according to claim 1, characterized in that: The connecting rod (6) and the positioning groove (3) are a through-type disassembly and installation structure that fits together.

3. The slag removal mechanism for the injection mold feed inlet according to claim 1, characterized in that: The connecting rod (6) and the positioning cavity (7) are horizontally through-type disassembly and installation structures, and the connecting rod (6) and the limiting block (12) are vertically distributed. The limiting block (12) and the fixing plate (11) are through-type vertical telescopic structures. An elastic element is provided at the through-connection of the limiting block (12) and the fixing plate (11). The top of the limiting block (12) is attached to the bottom of the top cover plate (9). A ball bearing structure is provided on the top of the limiting block (12) to reduce the contact friction between the limiting block (12) and the top cover plate (9).

4. The slag removal mechanism for the injection mold feed inlet according to claim 1, characterized in that: The top cover plate (9) is vertically coaxial with the threaded rod (10) and the positioning sleeve (8), wherein the threaded rod (10) and the positioning sleeve (8) are connected by a through thread, and the top of the top cover plate (9) is coplanar with the top of the feed pusher (1), and the edges of the two are in contact with each other.

5. The slag removal mechanism for the injection mold feed inlet according to claim 1, characterized in that: The second type of limiting component includes a sealing cavity (16) at the top center of the feed pusher (1). The sealing cavity (16) is embedded in the feed pusher (1), and the tops of the two are coplanar. A positioning screw (17) is threaded through the top center of the sealing cavity (16). The positioning screw (17) is used to fit and limit the wedge (18) at the end of the connecting rod (6). The connecting rod (6) and the sealing cavity (16) are arranged horizontally through each other. A positioning magnet is provided on the wedge (18).

6. The slag removal mechanism for the injection mold feed inlet according to claim 5, characterized in that: A connecting tube (19) is fixed through the sealing cavity (16) directly below the positioning screw (17) and the feeding pusher (1), and a valve (20) is fixed at the lower end of the connecting tube (19).

7. A slag removal mechanism for the feed inlet of an injection mold according to claim 6, characterized in that: A telescopic rod (1701) is coaxially installed through the bottom center of the positioning screw (17). An elastic element is fixed between the top of the telescopic rod (1701) and the inside of the positioning screw (17). Damping rubber blocks (1702) are distributed at equal angles on the side wall of the positioning screw (17). The middle section of the telescopic rod (1701) is provided with an arc-shaped segmented structure to realize the convex inner wall extrusion and propulsion of the damping rubber block (1702).

8. A slag removal mechanism for the feed inlet of an injection mold according to any one of claims 1-7, characterized in that, It also includes a method for removing slag after removing slag from the injection mold inlet, the specific steps of which are as follows: S1: A positioning groove (3) is opened in the middle section of the feed pusher (1), and a Teflon ring (4) is fixedly installed in the positioning groove (3). The feed pusher (1) and the Teflon ring (4) on it are guided into the material channel of the injection mold, so that the Teflon ring (4) is tightly attached to the inner wall of the material channel. S2: The material inside the material channel of the barrel is heated and softened into a fluid state. The feed pusher (1) moves upward under the action of the lower push rod (2) and pushes the material into the mold for injection molding. During this process, some material adheres to the inner wall of the material channel of the barrel. S3: After injection molding is completed and the mold is opened, the feed pusher (1) moves downward and scrapes the residue on the inner wall of the material channel for the first time. This part of the residue falls into the bottom of the equipment. S4: The feed pusher (1) moves upward again to scrape the residue on the inner wall of the material channel for the second time. This part of the residue moves to the surface of the injection mold and is blown away by the operator with an air gun. S5: The feed pusher (1) is reset and waits for the next push action.

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