Common base for injection molding of weather strip

Abstract

The application provides a shared base of a sealing strip injection molding mold, and belongs to the technical field of molds, and comprises a bottom plate, a lifting plate, a guide groove plate, a balance guide mechanism and a top pin and bottom plate connecting mechanism, the bottom plate is arranged on a workbench of an injection machine, the lifting plate is connected to a top pin mechanism of the injection machine and is located above the bottom plate, the guide groove plate is symmetrically arranged on left and right sides of the lifting plate, support columns are arranged between the guide groove plate and the lifting plate, the balance guide mechanisms are symmetrically arranged on left and right sides of the bottom plate, and the guide groove plates are respectively connected to the balance guide mechanisms on the same side. The shared base of the application is provided for corner joint molds of different types of glass slot sealing strips, the shared base is fixed on the workbench of the injection machine and does not need to be removed and moved away, the corner joint mold is miniaturized, the weight of the corner joint mold is reduced, the mold changing time and labor intensity are reduced, and the production efficiency of the production line is improved.

Description

Technical Field

[0001] This invention belongs to the field of mold technology, and specifically relates to a common base for a sealing strip injection molding mold. Background Technology

[0002] Automotive glass channel sealing strips primarily serve functions such as sound insulation, noise reduction, dustproofing, waterproofing, and aesthetics. Glass channel sealing strips typically require injection molding by combining 3-5 sealing strip components with different cross-sectional shapes. The injection molding die for the corner joints of glass channel sealing strips, as a crucial tool for joining different materials into one unit, is an indispensable part of the corner injection molding process.

[0003] Currently, injection molding corner joint molds typically utilize hydraulic or pneumatic cylinders to drive the moving mold mechanism for lifting, forming a lifting system with other mold components to ensure that the glass groove sealing strip corner can be smoothly removed from the mold after molding. However, due to the large space occupied, heavy weight, and complex structure of the molds, the hydraulic or pneumatic cylinders require connection to corresponding pipe fittings, as well as oil and air circuits for connection to the equipment. This connection process is cumbersome. When glass groove sealing strips for different car models are produced on the same production line, rapid mold changes are not possible, resulting in long mold change times, high manual labor intensity, and low injection corner joint efficiency. Summary of the Invention

[0004] This invention provides a common base for injection molding molds of sealing strips, aiming to solve the problem of long replacement time, time and labor costs, and reduced production efficiency of the corner molds for sealing strips of glass grooves in different car models.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a common base for a sealing strip injection molding die is provided, comprising: a base plate, a lifting plate, a guide groove plate, a balancing guide mechanism, and an ejector pin and base plate connection mechanism. The base plate is disposed on the worktable of the injection molding machine; the lifting plate is connected to the ejector pin mechanism of the injection molding machine and is located above the base plate; the guide groove plates are symmetrically disposed on the left and right sides of the lifting plate; a support column is disposed between the guide groove plate and the lifting plate; the balancing guide mechanism is symmetrically disposed on the left and right sides of the base plate, and the guide groove plates are respectively connected to the balancing guide mechanism on the same side; the ejector pin and base plate connection mechanism is used to connect the lifting plate and the ejector pin mechanism.

[0006] In one possible implementation, a lower anti-rotation structure is provided between the support column and the lifting plate. The lower anti-rotation structure includes: a lower anti-rotation hole provided on the lifting plate and a lower anti-rotation shaft provided at the lower end of the support column. The lower anti-rotation shaft is adapted to the lower anti-rotation hole. A first anti-rotation surface is provided on the lower anti-rotation shaft, and a second anti-rotation surface parallel to the first anti-rotation surface is provided on the lower anti-rotation hole.

[0007] In one possible implementation, the lower anti-rotation structure further includes an anti-rotation pad disposed within the lower anti-rotation hole, the anti-rotation pad being fixedly connected to the lower end of the lower anti-rotation shaft of the support column by a first bolt.

[0008] In one possible implementation, the lower anti-rotation hole is further provided with an outwardly expanding process hole, and the anti-rotation pad is provided with an anti-rotation lug that protrudes and is adapted to the process hole.

[0009] In one possible implementation, the balancing guide mechanism includes a support fixed to the base plate, a balancing guide post disposed on the support plate, and a balancing guide sleeve slidably fitted on the balancing guide post. The guide groove plate is fixed to the upper end of the balancing guide sleeve, and the guide groove plate is provided with an upper guide hole that avoids the balancing guide post.

[0010] In one possible implementation, the balancing guide sleeve includes an outer balancing guide sleeve and an inner balancing guide sleeve, wherein a locking screw for axial locking is provided at the gap between the outer balancing guide sleeve and the inner balancing guide sleeve; the balancing guide post is slidably engaged with the inner balancing guide sleeve, and the guide groove plate is fixed to the upper end of the outer balancing guide sleeve.

[0011] In one possible implementation, a support structure is further included, fixed to the base plate, the support structure being located between the two guide plates; the support structure includes a front support block and a rear support block fixed to the base plate; the support structure also includes a top plate and a guard plate fixed to the front support block and the rear support block, the top plate being located between the guard plates on both sides; a clamping guide post is further provided between the top plate and the base plate, and a first guide hole cooperating with the clamping guide post is provided on the lifting plate.

[0012] In one possible implementation, a locking and limiting mechanism is further provided on the support structure. The locking and limiting mechanism includes a front locking block provided on the front support block and a rear locking block provided on the rear support block. The front support block is provided with a front sliding groove extending in the left-right direction, and the front locking block slides in cooperation with the front sliding groove. The rear support block is provided with a rear sliding groove extending in the left-right direction, and the rear locking block slides in cooperation with the rear sliding groove.

[0013] In one possible implementation, front anti-slip components are respectively provided at both ends of the front slide groove on the front support block.

[0014] The common base for the injection molding die of the sealing strip provided by this invention has the following advantages compared with the prior art: The common base provided by this invention is a functional medium between the injection machine and the injection molding die, and can simultaneously match the corner molds of glass groove sealing strips of different types and car models. For the corner molds of different types of glass groove sealing strips, the common base is fixed on the worktable of the injection machine and does not need to be removed or moved. The moving mold mechanism of the corner mold can be pushed in along the guide plate, which realizes the miniaturization of the corner mold, reduces the weight of the corner mold, reduces the mold change time and the labor intensity of mold change, and improves the production efficiency of the production line. Attached Figure Description

[0015] Figure 1 A three-dimensional structural diagram of the common base of the injection molding die for the sealing strip provided in an embodiment of the present invention. Figure 1 ;

[0016] Figure 2 A three-dimensional structural diagram of the common base of the injection molding die for the sealing strip provided in an embodiment of the present invention. Figure 2 ;

[0017] Figure 3 This is a front view structural diagram of the common base of the sealing strip injection molding die provided in an embodiment of the present invention;

[0018] Figure 4 For along Figure 3 Cross-sectional view of line AA in the middle;

[0019] Figure 5 For along Figure 3 Cross-sectional view of the middle BB line;

[0020] Figure 6 For along Figure 3 Cross-sectional view of the CC line;

[0021] Figure 7 For along Figure 3 Cross-sectional view of the DD line;

[0022] Figure 8 A three-dimensional structural diagram of a common base portion of the injection molding die for the sealing strip provided in the embodiments of the invention. Figure 1 ;

[0023] Figure 9 A three-dimensional structural diagram of a common base portion of the injection molding die for the sealing strip provided in the embodiments of the invention. Figure 2 ;

[0024] Figure 10 A three-dimensional structural diagram of a common base portion of the injection molding die for the sealing strip provided in the embodiments of the invention. Figure 3 ;

[0025] Figure 11 A three-dimensional structural diagram (bottom view) of the common base of the injection molding die for the sealing strip provided in the embodiment of the invention;

[0026] Figure 12 A top view of a portion of the common base of the injection molding die for the sealing strip provided in the embodiments of the invention. Figure 1 ;

[0027] Figure 13 A top view of a portion of the common base of the injection molding die for the sealing strip provided in the embodiments of the invention. Figure 1 ;

[0028] Figure 14 A three-dimensional structural schematic diagram of the guide plate provided in an embodiment of the invention;

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Guide plate; 101. Baffle; 102. Support plate; 103. Upper anti-rotation hole; 104. Second guide hole; 2. Balance outer guide sleeve; 3. Quick-release block; 4. Front anti-detachment component; 5. Top rod; 6. Lifting plate; 601. Lower anti-rotation hole; 602. Anti-rotation pad block; 603. Process hole; 7. Base plate; 8. Front locking block; 9. Front support block; 901. Front slide groove; 10. Balance guide post; 11. ... 12. Bolt; 13. Guard plate; 14. Rear locking block; 15. Top plate; 16. Rear support block; 17. Rear slide groove; 18. Support seat; 19. First bolt; 20. Balance inner guide sleeve; 21. Upper limit pin; 22. Clamping guide post; 23. Guide slide sleeve; 24. Auxiliary guide post; 25. Support post; 26. Connector; 27. Foot plate; 28. First limit snap ring; 29. ​​Locking screw. Detailed Implementation

[0031] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0032] It should be noted that in the description of this invention, the front and back, left and right, and up and down directions refer to the directions marked in the figures, which are based on the attached figures. Figure 1 and Figure 2 The orientations or positional relationships shown are for the purpose of facilitating the description of the present invention and simplifying the description, and are not intended to 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 limiting the present invention.

[0033] Please refer to the following: Figures 1 to 14The common base of the sealing strip injection molding die provided by the present invention will now be described. The common base of the sealing strip injection molding die includes: a base plate 7, a lifting plate 6, a guide groove plate 1, and a balancing guide mechanism. The base plate 7 is disposed on the worktable of the injection molding machine; the lifting plate 6 is connected to the ejector mechanism of the injection molding machine and is located above the base plate 7; the guide groove plates 1 are symmetrically disposed on the left and right sides of the lifting plate 6; a support column 23 is disposed between the guide groove plates 1 and the lifting plate 6; the balancing guide mechanism is symmetrically disposed on the left and right sides of the base plate 7, and the guide groove plates 1 are respectively connected to the balancing guide mechanism on the same side. The ejector pin and base plate connection mechanism is used to connect the lifting plate 6 and the ejector pin mechanism. The ejector pin and base plate connection mechanism includes a connector head 24 and a foot plate 25. The foot plate 25 is fixed on the lifting plate 6, forming a space between the foot plate 25 and the lifting plate, and the connector head 24 extends between the two foot plates 25. The ejector rod of the ejector pin mechanism is connected to the connector head 24.

[0034] The common base for the injection molding die of the sealing strip provided by the present invention has the following advantages compared with the prior art: The common base provided by the present invention is a functional medium between the injection machine and the injection molding die, and can simultaneously match the corner molds of glass groove sealing strips of different types and car models. For the corner molds of different types of glass groove sealing strips, the common base is fixed on the worktable of the injection machine and does not need to be removed or moved. The moving mold mechanism of the corner mold can be pushed in along the guide plate 1, which realizes the miniaturization of the corner mold, reduces the weight of the corner mold, reduces the mold change time and the labor intensity of mold change, and improves the production efficiency of the production line.

[0035] The common base uses the injection molding machine's own ejector pin to connect with the machine's oil cylinder to drive the mold lifting. The common base can be permanently fixed on the injection (pressure) machine. When different glass mesh groove sealing strips are formed and different corner molds are used, the corner molds are pushed into the guide plate 1 of the common base.

[0036] To further explain, existing corner molds of various types, including automatic mold insertion mechanisms, automatic mold opening mechanisms, integrated water and air circuit mechanisms, and integrated circuit control connectors, all require a base for their corner sealing mechanisms to support the moving mold mechanism and connect to the injection molding machine's worktable. Currently, all types of corner molds are equipped with a base, resulting in large overall size and weight, making movement and replacement very inconvenient. Since the base is primarily made of solid steel or iron plates, it accounts for a significant portion of the weight, but its main purpose is support. Therefore, this invention separates the bases of different types of corner molds from the upper moving mold mechanism, designing a shared base. The moving mold mechanism only needs the necessary base plate 7 to provide support for the automatic mold opening mechanism, automatic mold insertion mechanism, integrated water and air circuit mechanism, and integrated circuit control connector. During replacement, the moving mold mechanism only needs to be pushed in along the guide plate 1, eliminating the need for installation between the moving mold mechanism and the injection molding machine's worktable. This significantly reduces the overall weight of the corner mold and greatly reduces the workload of mold replacement. According to on-site weighing, the simplified corner mold has a 35% weight reduction, from 325kg to 210kg.

[0037] The ejector mechanism is part of the injection molding machine. The ejector mechanism includes an ejector rod 5, which is connected to a hydraulic cylinder below the injection molding machine. The hydraulic cylinder drives the lifting plate 6 to move up and down. The ejector rod 5 and the lifting plate 6 can be directly connected. In this preferred embodiment, an avoidance notch is provided on the base plate 7, and two foot plates 25 are symmetrically arranged at the bottom of the lifting plate 6. A connector 24 is provided at the upper end of the ejector rod 5, and the connector 24 is located on the two foot plates 25. In this way, the ejector rod 5 and the lifting plate 6 do not need to be connected to lift the lifting plate 6.

[0038] The support columns 23 on the left and right sides of the lifting plate 6 support the guide plate 1, and in turn support the moving mold mechanism or corner mold on the guide plate 1. With the help of the balance guide mechanism set at the four corners of the lifting plate 6, the support columns 23 rise and fall with the lifting plate 6, guide and balance the lifting plate 6 and the corner mold it supports, and meet the requirement of stably and balancedly supporting the mold.

[0039] Preferably, the support column 23 is located in the middle of the two balancing guide mechanisms on the same side, and the left and right ends of the lifting plate 6 extend into the two balancing guide mechanisms on the same side. The lifting plate 6 is spindle-shaped, which can support the corner mold while reducing the weight of the shared base and saving material costs.

[0040] In some embodiments, such as Figures 3 to 13As shown, a lower anti-rotation structure is provided between the support column 23 and the lifting plate 6. The lower anti-rotation structure includes: a lower anti-rotation hole 601 provided on the lifting plate 6 and a lower anti-rotation shaft provided at the lower end of the support column 23. The lower anti-rotation shaft is adapted to the lower anti-rotation hole 601. A first anti-rotation surface is provided on the lower anti-rotation shaft, and a second anti-rotation surface parallel to the first anti-rotation surface is provided on the lower anti-rotation hole 601.

[0041] Although the corner fitting mold has been reduced in weight through weight reduction, its remaining weight is still considerable. To ensure the balance and horizontal lifting of the left and right sides of the corner fitting mold, it is necessary to prevent rotation between the support column 23 and the lifting plate 6. This invention does not use conventional screw connections, but instead constructs a non-circular lower anti-rotation hole 601 on the lifting plate 6. The lower anti-rotation shaft at the lower end of the support column 23 cooperates with the lower anti-rotation hole 601 to prevent relative rotation between the support column 23 and the lifting plate 6; wherein, the lower anti-rotation shaft can be fitted into the lower anti-rotation hole 601.

[0042] Optionally, the lower anti-rotation hole 601 can be elliptical, square, hexagonal, etc. The lower anti-rotation hole 601 provided by the present invention is provided with two symmetrical second anti-rotation surfaces.

[0043] Correspondingly, an upper anti-rotation structure is provided between the upper end of the support column 23 and the guide plate 1. The upper anti-rotation structure is the same as the lower anti-rotation structure, specifically, an upper anti-rotation hole 103 is provided in the guide plate 1 (e.g., Figure 14 As shown, the upper end of the support column 23 is fixedly connected to the guide plate 1 by the second bolt 11. The upper anti-rotation hole 103 is a countersunk hole with a plane on the inner side that abuts against the upper end of the support column 23.

[0044] In some embodiments, such as Figure 4 As shown, the lower anti-rotation structure also includes an anti-rotation pad 602 disposed within the lower anti-rotation hole 601. The anti-rotation pad 602 is fixedly connected to the lower end of the lower anti-rotation shaft of the support column 23 by a first bolt 17. The anti-rotation pad 602 provides support for the lower end of the support column 23. A through hole for the first bolt 17 is provided on the base plate 7 to prevent the first bolt 17 from being exposed outside the base plate 7. The surrounding surfaces of the anti-rotation pad 602 are in contact with the inner wall of the lower anti-rotation hole 601.

[0045] In some embodiments, such as Figure 13 As shown, the lower anti-rotation hole 601 is also provided with an outwardly expanding process hole 603, and the anti-rotation pad 602 is provided with a protruding anti-rotation ear block that is adapted to the process hole 603.

[0046] In some embodiments, such as Figure 5 , Figures 7 to 10As shown, the balancing guide mechanism includes a support base 16 fixed on the base plate 7, a balancing guide post 10 disposed on the support base 16, and a balancing guide sleeve slidably fitted on the balancing guide post 10. A guide groove plate 1 is fixed to the upper end of the balancing guide sleeve, and the guide groove plate 1 has an upper guide hole to avoid the balancing guide post 10. The balancing guide mechanism is distributed on the outer sides of the four corners of the lifting plate 6, providing balance and guidance for the lifting of the lifting plate 6 supporting the corner mold, ensuring that the lifting plate 6 rises and falls vertically. The balancing guide sleeve rises and falls along the balancing guide post 10 with the lifting plate 6.

[0047] like Figure 1 and Figure 2 As shown, the guide plate 1 includes a support plate 102 and a baffle 101. The support plate 102 is fixed to the balance guide sleeve by bolts, and the baffle 101 is fixed to the side of the support plate 102 to form the left and right limit of the mating corner mold.

[0048] In some embodiments, such as Figure 5 , Figures 7 to 10 As shown, the base plate 7 is provided with anti-rotation and sinking holes, and the lower end of the support base 16 is adapted to fit into the anti-rotation and sinking holes; the support base 16 is provided with a lower guide hole for mounting the lower end of the balance guide column 10. The anti-rotation and sinking holes provided on the base plate 7 can prevent the support base 16 and the balance guide column 10 from rotating relative to each other, ensuring the balanced lifting and lowering of the lifting plate 6.

[0049] The anti-rotation sink hole and the upper anti-rotation hole 103 can have the same shape or different shapes. For example, the upper anti-rotation hole 103 has two parallel second anti-rotation surfaces, and the anti-rotation sink hole is square.

[0050] In some embodiments, such as Figure 5 , Figures 7 to 10 As shown, the balance guide sleeve includes an outer balance guide sleeve 2 and an inner balance guide sleeve 18. A locking screw 27 for axial locking is provided at the gap between the outer balance guide sleeve 2 and the inner balance guide sleeve 18. The balance guide post 10 is slidably fitted with the inner balance guide sleeve 18, and the guide groove plate 1 is fixed at the upper end of the outer balance guide sleeve 2.

[0051] Optionally, the support base 16 has the function of lower limit and support for the balance guide sleeve. The upper end of the outer balance guide sleeve 2 is provided with an upper limit pin 19. The height of the inner balance guide sleeve 18 is lower than that of the outer balance guide sleeve 2. When the inner balance guide sleeve 18 abuts against the upper limit pin 19, the lifting plate 6 stops moving upward.

[0052] The common base of the injection molding mold for sealing strips, such as Figure 4 , Figures 6 to 10As shown, it also includes a support structure fixed to the base plate 7, located between the two guide plates 1; the support structure includes a front support block 9 and a rear support block 15 fixed to the base plate 7; the support structure also includes a top plate 14 and a guard plate 12 fixed to the front support block 9 and the rear support block 15, with the top plate 14 located between the guard plates 12 on both sides; a clamping guide post 20 is also provided between the top plate 14 and the base plate 7, and a first guide hole is provided on the lifting plate 6 to cooperate with the clamping guide post 20. The clamping guide post 20 guides the lifting of the lifting plate 6, and at the same time, the support structure supports the corner mold. As the lifting plate 6 rises and falls, the distance between the guide plate 1 and the top plate 14 can be adjusted according to different types of corner molds to meet the common function of different types of corner molds.

[0053] Among them, the side guard plates 12 are higher than the top plate 14 to adapt to the needs of the bottom of different corner molds. The guard plates 12 have the function of limiting the left and right sides of the corner molds.

[0054] Preferably, four clamping guide posts 20 are provided for the lifting plate 6, and guide sleeves 21 are also fitted on the clamping guide posts 20. The guide sleeves 21 are fastened together with the first guide hole on the lifting plate 6 by the first limiting spring 26. The guide sleeves 21 move up and down with the lifting plate 6, while avoiding wear on the lifting plate 6.

[0055] Optionally, an auxiliary guide column 22 is also provided between the top plate 14 and the lifting plate 6. The two ends of the auxiliary guide column 22 are fixed on the bottom plate 7 and the top plate 14 respectively, and are provided between two clamping guide columns 20 on the same side.

[0056] The top of the support structure uses two strip-shaped top plates 14, which can support the weight of molds under 300kg, reducing the weight of the shared base; the two ends of the guard plate 12 are made into open "trumpet" shaped guides (with guide slopes), which can quickly push the mold in from the front of the operation without having to align it before installation, saving the mold installation time.

[0057] In some embodiments, such as Figures 1 to 3 As shown, it also includes a locking and limiting mechanism disposed on the support structure. The locking and limiting mechanism includes a front locking block 8 disposed on the front support block 9 and a rear locking block 13 disposed on the rear support block 15. The front support block 9 is provided with a front sliding groove 901 extending in the left and right direction, and the front locking block 8 is slidably engaged with the front sliding groove 901. The rear support block 15 is provided with a rear sliding groove 151 extending in the left and right direction, and the rear locking block 13 is slidably engaged with the rear sliding groove 151.

[0058] The front locking block 8 and the rear locking block 13 can be adjusted to appropriate positions on the front support block 9 and the rear support block 15 according to different corner molds, and then locked with screws. Once locked, they remain stationary, eliminating the need for disassembly when changing different molds. The front locking block 8 has a sliding key, allowing it to move freely within the front slide groove 901 to accommodate different mold positions. Changing molds only requires removing and installing one screw from the front locking block for quick locking. The rear locking block 13 also slides along the rear slide groove 151, corresponding to different bolt holes for locking.

[0059] In some embodiments, such as Figures 1 to 3 As shown, front anti-slip components 4 are respectively provided at the left and right ends of the front slide groove 901 on the front support block 9. The anti-slip components can be cylindrical pins, bolts, or blocks fixed at both ends.

[0060] It should be noted that all components of this invention are connected by bolts, making assembly and disassembly simple and convenient.

[0061] Among them, such as Figures 1 to 3 As shown, quick-assembly blocks 3 are also provided on the left and right sides of the base plate 7. The quick-assembly blocks 3 cooperate with the groove structure on the injection molding machine worktable to realize the quick assembly of the shared base onto the injection molding machine without adjustment or alignment, thereby improving production efficiency.

[0062] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0063] Based on the same inventive concept, this application also provides a sealing strip injection molding die, which is equipped with a common base.

[0064] The corner mold is pushed into the common base along the guide plate. The front locking block and the rear locking block lock the corner mold from the front and rear. After completion, the equipment opens the mold, the lifting system of the injection molding machine rises, the mold opening system opens in sequence, the product is unmolded, and the product is manually removed. The entire molding process is completed.

[0065] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A common base for an injection molding die for a sealing strip, characterized in that, include: The base plate (7) is set on the worktable of the injection molding machine; The lifting plate (6) is connected to the ejector mechanism of the injection machine and is located above the base plate (7); Guide plates (1) are symmetrically arranged on the left and right sides of the lifting plate (6); a support column (23) is provided between the guide plates (1) and the lifting plate (6); A balancing guide mechanism is symmetrically arranged on the left and right sides of the base plate (7), and the guide slot plates (1) are respectively connected to the balancing guide mechanism on the same side; and The ejector pin and base plate connection mechanism is used to connect the lifting plate (6) to the ejector pin mechanism; The balance guide mechanism includes a support base (16) fixed on the base plate (7), a balance guide post (10) set on the support base (16), and a balance guide sleeve slidably fitted on the balance guide post (10). The guide groove plate (1) is fixed at the upper end of the balance guide sleeve, and the guide groove plate (1) is provided with an upper guide hole to avoid the balance guide post (10). It also includes a support structure fixed on the base plate (7), the support structure being located between the two guide plates (1); the support structure includes a front support block (9) and a rear support block (15) fixed on the base plate (7); the support structure also includes a top plate (14) and a guard plate (12) fixed on the front support block (9) and the rear support block (15), the top plate (14) being located between the guard plates (12) on both sides; a clamping guide post (20) is also provided between the top plate (14) and the base plate (7), and a first guide hole that cooperates with the clamping guide post (20) is provided on the lifting plate (6); It also includes a locking and limiting mechanism disposed on the support structure, the locking and limiting mechanism including a front locking block (8) disposed on the front support block (9) and a rear locking block (13) disposed on the rear support block (15); the front support block (9) is provided with a front sliding groove (901) extending in the left and right direction, the front locking block (8) is slidably engaged with the front sliding groove (901); the rear support block (15) is provided with a rear sliding groove (151) extending in the left and right direction, the rear locking block (13) is slidably engaged with the rear sliding groove (151).

2. The common base of the injection molding die for the sealing strip as described in claim 1, characterized in that, A lower anti-rotation structure is provided between the support column (23) and the lifting plate (6). The lower anti-rotation structure includes a lower anti-rotation hole (601) provided on the lifting plate (6) and a lower anti-rotation shaft provided at the lower end of the support column (23). The lower anti-rotation shaft is adapted to the lower anti-rotation hole (601). A first anti-rotation surface is provided on the lower anti-rotation shaft, and a second anti-rotation surface parallel to the first anti-rotation surface is provided on the lower anti-rotation hole (601).

3. The common base of the injection molding die for the sealing strip as described in claim 2, characterized in that, The lower anti-rotation structure also includes an anti-rotation pad (602) disposed in the lower anti-rotation hole (601), and the anti-rotation pad (602) is fixedly connected to the lower end of the lower anti-rotation shaft of the support column (23) by a first bolt (17).

4. The common base of the injection molding die for the sealing strip as described in claim 1, characterized in that, The base plate (7) is provided with anti-sinking holes, and the lower end of the support base (16) is adapted to the anti-sinking holes; the support base (16) is provided with a lower guide hole for assembling the lower end of the balance guide column (10).

5. The common base of the injection molding die for the sealing strip as described in claim 1, characterized in that, The balancing guide sleeve includes an outer balancing guide sleeve (2) and an inner balancing guide sleeve (18). A locking screw (27) for axial locking is provided at the gap between the outer balancing guide sleeve (2) and the inner balancing guide sleeve (18). The balancing guide post (10) is slidably engaged with the inner balancing guide sleeve (18). The guide groove plate (1) is fixed at the upper end of the outer balancing guide sleeve (2).

6. The common base of the injection molding die for the sealing strip as described in claim 1, characterized in that, The front support block (9) has front anti-detachment components (4) respectively provided at both ends of the front slide groove (901).

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