Rubber sealing rubber strip injection molding machine head and injection molding device

Abstract

The invention relates to the technical field of injection molding, and discloses a rubber sealing rubber strip injection molding machine head and an injection molding device.The rubber sealing rubber strip injection molding machine head comprises a fixing base, a mold, a guiding piece and a mounting assembly; the fixed seat is matched with an injection molding machine, the mold is fixed with the guide part, the guide part slides on the fixed seat to drive the mold to get close to or get away from the fixed seat, and a groove is formed in the periphery of the mold; at least one group of mounting components are mounted on the fixed seat to be matched with the mold; each installation assembly comprises a telescopic power part, a connecting part and an abutting-in part. The telescopic direction of the telescopic power is parallel to the sliding direction of the guide part; the connecting piece is connected to the telescopic power telescopic end; the abutting-in piece is in linkage with the connecting piece in the direction close to or away from the mold. The telescopic linkage installation assembly of the telescopic power is switched between the locking state and the unlocking state. The disassembly and assembly efficiency of the machine head mold can be improved.

Description

Technical Field

[0001] This application relates to the technical field of injection molding, and in particular to an injection molding head and injection molding device for a rubber sealing strip. Background Technology

[0002] When rubber sealing strips are discharged from the injection molding machine, the molten material enters the die cavity of the injection molding machine and is extruded from the die outlet to form a sealing strip with a specific cross-sectional shape.

[0003] Currently, the molds on the machine head are usually detachably connected to the machine head by bolts. Every time the product mold is changed or the mold is maintained, the operator needs to use special tools to tighten or loosen multiple bolts one by one, which is labor-intensive and inefficient. Summary of the Invention

[0004] To improve the efficiency of disassembling and assembling the injection molding head, this application provides a rubber sealing strip injection molding head.

[0005] In a first aspect, this application provides a rubber sealing strip injection molding head, which adopts the following technical solution: A rubber sealing strip injection molding head includes: a fixed base, a mold, a guide component, and an installation assembly; the fixed base cooperates with the injection molding machine, the mold is fixed to the guide component, the guide component slides on the fixed base to drive the mold closer to or away from the fixed base, and the outer periphery of the mold is provided with a groove; The mounting assembly has at least one set and is mounted on the fixed base to cooperate with the mold; each set of the mounting assembly includes a telescopic force, a connector, and an insert; the telescopic force extends in a direction parallel to the sliding direction of the guide; the connector is connected to the telescopic end of the telescopic force; the insert moves towards or away from the mold and is linked with the connector. The telescopic linkage of the telescopic force switches the mounting component between a locked state and an unlocked state; when the mounting component is in the locked state, the inserting member inserts into the groove and presses the mold against the fixing seat; during the process of the mounting component moving to the unlocked state, the inserting member first pushes the mold away from the fixing seat, and then the inserting member leaves the groove.

[0006] By adopting the above technical solution, the telescopic movement of the telescopic power unit can be linked to the installation components to switch between locked and unlocked states, enabling rapid clamping and disassembly of the mold. In the locked state, the insert is embedded in the groove on the outer periphery of the mold and presses it firmly against the fixed seat, ensuring the mold's stable position and good sealing during injection molding. During the unlocking process, the insert first pushes the mold away from the fixed seat, creating a heat dissipation gap, and then disengages from the groove, allowing the mold to be easily removed. This improves mold change efficiency, reduces manual operation intensity, and is suitable for production scenarios with frequent mold changes.

[0007] Optionally, the abutting member includes a heating seat capable of being heated, and when the mounting assembly is in the locked state, the abutting member abuts against the mold via the heating seat.

[0008] By adopting the above technical solution, the heating seat can contact the mold in the locked state, which can continuously heat the mold, maintain its working temperature, and avoid poor molding of the rubber strip or solidification of the material due to temperature fluctuations.

[0009] Optionally, the connector includes a connecting seat and a gear; the connecting seat is connected to the telescopic power telescopic end and allows the insert to move; the gear is rotatably fitted onto the connecting seat and engages with the insert, and the insert has a toothed portion that meshes with the gear; During the process of moving the installation component to the unlocked state, the rotation of the gear drives the insert to move closer to or away from the mold along the vertical telescopic force extension direction.

[0010] By adopting the above technical solution, the meshing transmission between the gear and the toothed part enables the insert to move along the direction of the telescopic force under the drive of telescopic power, thereby realizing the insertion and release of the insert in the mold groove.

[0011] Optionally, the connector may further include a sliding post and an elastic portion; The sliding column slides through the connecting seat in a direction parallel to the telescopic force, the gear is coaxially sleeved on the sliding column, and the gear is located in the insert and is restricted from relative displacement with the insert in the telescopic force direction; the elastic part cooperates with the connecting seat and the sliding column to give the sliding column an ​​elastic force to extend through the insert at the end away from the fixed seat; The injection molding head also includes a limiting seat opposite to the sliding column. The limiting seat is positioned relative to the fixed seat. During the process of moving the mounting assembly to the unlocked state, the sliding column abuts against the limiting seat, so that the sliding column resists the elastic force of the elastic element. At the same time, the sliding column and the gear undergo relative displacement along the gear axis to drive the gear to rotate.

[0012] By adopting the above technical solution, the sliding column and gear mating structure realizes the conversion of axial displacement to rotational motion during the unlocking process, thereby driving the gear to rotate and moving the insert. The elastic part provides a restoring force, enabling the insert to stably press against the mold in the locked state.

[0013] Optionally, the outer periphery of the sliding column has a travel protrusion, and the inner periphery of the gear has a travel groove for the travel protrusion to abut against and slide, the travel groove extending obliquely along the circumferential direction of the gear.

[0014] By adopting the above technical solution, the cooperation between the stroke cam and the inclined stroke groove converts the axial movement of the sliding column into the rotational motion of the gear.

[0015] Optionally, there are multiple sets of mounting components. When the mounting components are in a locked state, the abutments of adjacent mounting components move close to each other and are magnetically attracted to each other.

[0016] By adopting the above technical solution, the inserts in the mounting assembly attract each other through magnetic attraction in the locked state, forming a closed clamping force field, which further enhances the stability of the mounting assembly in the locked state.

[0017] Optionally, the portion of the fixed seat near the mold has a ball-head plunger, the ball head of which is located on the moving path of the guide, and the outer periphery of the guide away from the mold has a limiting groove for the ball head of the ball-head plunger to abut.

[0018] By adopting the above technical solution, the ball plunger and the limiting groove can still limit the guide component after the mold is removed from the fixed seat, preventing it from accidentally falling off in a non-disassembly state.

[0019] Optionally, the injection molding head also includes a cooling component, which is positioned relative to the fixed base. When the mounting assembly pushes the mold to the unlocked state, the mold is opposite to the cooling component.

[0020] By adopting the above technical solution, the cooling component is opposite to the mold in the unlocked state, which can actively cool the mold, accelerate its cooling process, and shorten the production cycle.

[0021] Optionally, the mounting base is covered with a heating element.

[0022] Secondly, this application provides an injection molding device, which adopts the following technical solution: An injection molding apparatus includes: two injection molding machines and the aforementioned rubber sealing strip injection molding head, wherein the injection molding head has flow channels that are respectively opposite to and connected to the two injection molding machines.

[0023] In summary, this application includes at least one of the following beneficial effects: 1. By switching the state of the installation component, the mold can be pressed against or pushed away from the fixed base to disassemble and install the mold. When the installation component is in the unlocked state, the operator only needs to pull out the old mold and insert the new mold. The mold can be replaced by moving the installation component, thereby improving the disassembly and assembly efficiency of the machine head mold. 2. The cooling component can cool the rubber strip being ejected when the injection molding head is working, and cool the mold when the mold is disassembled, thereby improving the efficiency of mold replacement. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of this application; Figure 2 This is a structural schematic diagram from another angle of Embodiment 1 of this application; Figure 3 This is a schematic diagram of the exploded structure of the mold and the fixed base in Embodiment 1 of this application; Figure 4 This is a schematic diagram of the structure of the two sets of mounting components in Embodiment 1 of this application; Figure 5 yes Figure 4 A perspective view of the A-side of a set of installed components; Figure 6 This is a structural schematic diagram of Embodiment 2 of this application.

[0025] Explanation of reference numerals in the attached drawings: 1. Fixed base; 2. Mold; 3. Guide component; 4. Mounting assembly; 41. Telescopic power; 42. Connecting component; 421. Connecting base; 422. Gear; 423. Sliding column; 424. Elastic part; 43. Inserting part; 431. Heating base; 432. Connecting rod; 5. Groove; 6. Toothed part; 7. Limiting base; 8. Stroke protrusion; 9. Stroke groove; 10. Ball head plunger; 11. Limiting groove; 12. Cooling component; 13. Heating component; 14. Guide groove; 15. Mounting base; 16. Protrusion; 17. Moving cavity; 18. Relief strip hole; 19. Injection molding machine. Detailed Implementation

[0026] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0027] Example 1: This application discloses an injection molding head for a rubber sealing strip. (Refer to...) Figure 1 and Figure 2 The rubber sealing strip injection molding head includes a fixed base 1, a mold 2, a guide 3, and an installation assembly 4. The fixed base 1 cooperates with the injection molding machine, and the mold 2 is fixed together with the guide 3. The guide 3 can slide on the fixed base 1, thereby moving the mold 2 closer to or away from the fixed base 1. The installation assembly 4 is installed on the fixed base 1 for disassembling and assembling the mold 2.

[0028] Reference Figure 3 In this design, the fixed base 1 is approximately disc-shaped and is fixed to the injection molding machine, having a flow channel communicating with the machine. The mold 2 is square-shaped, with an internal cavity and an outlet on one side. During use, the side of the mold 2 facing away from the outlet abuts against the fixed base 1. The central axis of the fixed base 1 coincides with the center line of the mold 2, and the mold 2 communicates with the flow channel through the cavity. The liquid material in the injection molding machine passes sequentially through the fixed base 1 and the mold 2, then exits in a strip shape from the outlet of the mold 2. It should be noted that while the internal appearance of the mold 2 may be identical for different products, the cavities may vary. Additionally, the mold 2 has a groove 5 along its circumferential direction on its outer periphery.

[0029] The guide member 3 is a column with its length direction parallel to the axial direction of the fixed base 1. The guide member 3 is fixed to the side of the mold 2 facing the fixed base 1, and multiple guide members 3 are distributed on the mold 2. The fixed base 1 has guide grooves 14 that correspond one-to-one with the guide members 3. The guide members 3 slide in the guide grooves 14 along the axial direction parallel to the fixed base 1 to guide the direction in which the mold 2 leaves the fixed base 1.

[0030] Reference Figure 2 , Figure 3 and Figure 4 The mounting assembly 4 has at least one set, and is mounted on the fixing base 1 and mates with the mold 2. In this embodiment, the mounting assembly 4 has two sets, which are symmetrically positioned diagonally relative to the mold 2.

[0031] Each mounting assembly 4 includes a telescopic power source 41, a connecting member 42, and an inserting member 43. The telescopic power source 41 is a power source with a telescopic end, which can be a cylinder or an electric telescopic rod. The base of the telescopic power source 41 is fixed to the fixed base 1 via a mounting base 15. The telescopic end of the telescopic power source 41 extends parallel to the axial direction of the fixed base 1, and the telescopic end of the telescopic power source 41 extends in the direction in which the mold 2 leaves the fixed base 1. The connecting member 42 is installed on the telescopic end of the telescopic power source 41. The inserting member 43 moves on the connecting member 42, specifically moving in a direction parallel to the radial direction of the fixed base 1 toward or away from the mold 2, so that the inserting member 43 can abut into or leave the groove 5 of the mold 2.

[0032] The telescopic force 41 allows the mounting component 4 to switch between a locked and unlocked state. When the mounting component 4 is in the locked state, the telescopic end of the telescopic force 41 retracts, at which point the abutment 43 abuts into the groove 5, and the abutment 43 presses against the inner wall of the groove 5 near the fixing seat 1 to press the mold 2 against the fixing seat 1. When the telescopic end of the telescopic force 41 extends, it moves the mounting component 4 from the locked state to the unlocked state. During this process, the abutment 43 first pushes the mold 2 away from the fixing seat 1 along the axial direction of the fixing seat 1, so that the end of the guide member 3 away from the mold 2 is close to the end of the fixing seat 1 facing the mold 2 but still in the guide groove 14. Then the abutment 43 moves away from the groove 5 in a direction parallel to the fixing seat 1 radially.

[0033] After the mounting component 4 is in the unlocked state, the insert 43 disengages from the mold 2, and the mold 2 is supported only by the guide 3 by the fixed seat 1. At this time, the operator can remove the mold 2 along the axial direction of the fixed seat 1, so that the guide 3 leaves the fixed seat 1. Similarly, when installing a new mold 2, the operator inserts part of the guide 3 on the mold 2 into the fixed seat 1, and then the telescopic end of the telescopic power 41 moves from the telescopic state to the retracted state, so that the insert 43 first abuts into the groove 5 of the mold 2, and then the abutment between the insert 43 and the mold 2 drives the mold 2 to press against the fixed seat 1 along the axial direction of the fixed seat 1.

[0034] Reference Figure 4 and Figure 5 Specifically, the connector 42 includes a connecting seat 421, a gear 422, a sliding column 423, and an elastic part 424. The connecting seat 421 is connected to the telescopic end of the telescopic power 41. The sliding column 423 slides through the connecting seat 421 along the direction parallel to the axis of the fixed seat 1. The connecting seat 421 has a rotation-limiting part that abuts against the sliding column 423. The outer wall of the sliding column 423 has a rotation-limiting groove for the rotation-limiting part to slide along the axial direction of the sliding column 423, so as to limit the rotation of the sliding column 423 relative to the connecting seat 421. The end of the sliding column 423 near the fixed seat 1 has a protrusion 16 with an outer circumferential dimension larger than the outer circumferential dimension of the sliding column 423. Gear 422 is coaxially sleeved on sliding column 423, and a columnar travel protrusion 8 is fixedly protruding on the outer peripheral wall of sliding column 423 opposite to gear 422. A travel groove 9 extends obliquely along the inner peripheral wall of gear 422. Travel protrusion 8 slides in travel groove 9 along the extension direction of travel groove 9, so as to drive gear 422 to move axially along sliding column 423 and rotate around the axis of sliding column 423. Elastic part 424 is a spring, which is sleeved on sliding column 423. The two ends of the spring that are far apart are respectively connected to protrusion 16 and connecting seat 421, and the elastic force of the spring causes sliding column 423 to move away from fixed seat 1, that is, protrusion 16 to move closer to connecting seat 421.

[0035] The insert 43 includes a fixed heating base 431 and a connecting rod 432. The heating base 431 is a right angle shape that mates with the adjacent two sides of the mold 2. It is used to move along the diagonal extension direction of the mold 2 to the insert groove 5 and abut against the edge of the mold 2. The width of the heating base 431 is smaller than the width of the groove 5 to facilitate the insertion of the heating base 431 into the groove 5. The heating base 431 is connected to a temperature probe and a power supply, and can heat the abutting mold 2 according to the set temperature to maintain the working temperature of the mold 2. Similarly, in order to maintain the working temperature of the fixed base 1, the fixed base 1 is covered with a heating element 13, which can be a resistance heating coil, a ceramic heating plate, etc.

[0036] The connecting rod 432 is fixed to the corner of the outer periphery of the heating base 431 and extends along the diagonal direction of the mold 2. The connecting rod 432 slides along the diagonal direction of the mold 2 and passes through the connecting base 421. The sliding column 423 passes through the connecting rod 432. The gear 422 is located in the connecting rod 432. The connecting rod 432 has a moving cavity 17 inside for the gear 422 to move along the length of the connecting rod 432. The inner walls of the moving cavity 17 on opposite sides abut against the end walls of opposite ends of the gear 422 to limit the relative displacement between the gear 422 and the connecting rod 432 along the axial direction of the sliding column 423. The inner wall of the connecting rod 432 facing the gear 422 has a toothed portion 6. The toothed portion 6 has teeth evenly spaced along the length of the connecting rod 432. The connecting rod 432 meshes with the gear 422 through the toothed portion 6.

[0037] Meanwhile, the connecting rod 432 has clearance slots 18 on both sides that communicate with the moving cavity 17. The clearance slots 18 extend along the length of the connecting rod 432 and are used to make way for the sliding column 423 when the relative displacement of the sliding column 423 and the connecting rod 432 occurs in the length direction of the connecting rod 432.

[0038] Reference Figure 2 , Figure 3 and Figure 5 Furthermore, the injection molding head also includes a limiting seat 7 opposite to the end of the sliding column 423 away from the fixed seat 1. The limiting seat 7 is fixed to the frame near the injection molding head by a bracket, so that the limiting seat 7 is positioned relative to the fixed seat 1.

[0039] When the mounting assembly 4 is in the locked state, the elastic force of the elastic part 424 causes the travel part to abut against the end of the travel groove 9 away from the fixed seat 1. At this time, the heating seats 431 in both sets of mounting assemblies 4 abut into the groove 5 of the mold 2 and together clamp and surround the mold 2. The side of the heating seat 431 near the fixed seat 1 abuts against the side of the groove 5 near the connecting seat 421, so as to press the mold 2 against the fixed seat 1. At the same time, the end of the sliding column 423 away from the fixed seat 1 extends the connecting rod 432 near the limit seat 7.

[0040] When the telescopic end of the telescopic power 41 extends and moves the mounting assembly 4 to the unlocked state, the side of the connecting rod 432 near the limit seat 7 will abut against the limit seat 7. Specifically, before the end of the sliding column 423 near the limit seat 7 abuts against the limit seat 7, the heating seat 431 clamps the mold 2 to move the mold 2 away from the fixed seat 1, so that a heat dissipation space is formed between the mold 2 and the fixed seat 1.

[0041] After the sliding column 423 abuts against the limiting seat 7, the sliding column 423 stops moving, while the connecting seat 421 continues to drive the connecting rod 432 to move closer to the limiting seat 7. This causes the connecting rod 432 to drive the gear 422 to move relative to the sliding column 423 along the axial direction of the sliding column 423, stretching the elastic part 424. With the cooperation of the stroke part and the stroke groove 9, the gear 422 rotates simultaneously. Furthermore, through the cooperation of the gear 422 and the toothed part 6, the connecting rod 432 and the heating seat 431 are driven to disengage from the mold 2 away from the mold 2. When the connecting rod 432 abuts against the limiting seat 7, the heating seat 431 completely disengages from the mold 2, and at this time, the end of the guide member 3 on the mold 2 away from the mold 2 is still located in the guide groove 14. After replacing with a new mold 2, the telescopic power 41 is retracted, and the heating seat 431, driven by the elastic force of the elastic part 424, re-abuts into the groove 5 of the new mold 2 and pushes the mold 2 against the fixing seat 1.

[0042] Reference Figure 4 Furthermore, magnets are provided at the ends of the heating seats 431 in both sets of mounting components 4, and the magnets at one end of the two heating seats 431 attract each other, thereby assisting the heating seats 431 in clamping the mold 2.

[0043] Reference Figure 3 Furthermore, a ball-head plunger 10 is installed in the guide groove 14 near the mold 2 at the end of the fixed base 1. The seat of the ball-head plunger 10 is inserted into the fixed base 1, and the ball head of the ball-head plunger 10 enters the guide groove 14. An arc-shaped limiting groove 11 is opened on the surface of the guide member 3 away from the mold 2 for the ball head of the ball-head plunger 10 to abut. After the heating base 431 drives the mold 2 to detach from the fixed base 1, it simultaneously drives the limiting groove 11 to approach or be opposite to the ball head. When the limiting groove 11 is opposite to the ball head, the ball head is abutted into the limiting groove 11 by the elastic force of the spring in the ball-head plunger 10, thereby limiting the guide member 3. This makes it less likely for the guide member 3 to accidentally detach from the fixed base 1 without the operator pulling it out, thus improving the stability of the mold 2 during disassembly.

[0044] Reference Figure 2Furthermore, the injection molding head also includes a cooling element 12 fixed to the connector 42. The cooling element 12 is fixed to the frame near the injection molding head by a bracket. The cooling element 12 can be a cooling sub-unit or an air outlet pipe connected to a cooling fan, and there are two cooling elements 12. When the mold 2 is pressed against the fixed base 1 by the mounting component 4, the cooling element 12 is located on the side of the mold 2 away from the fixed base 1, so that the rubber sealing strip extruded by the mold 2 is cooled by the cooling element 12 for initial cooling. When the mounting component 4 is in the unlocked state to move the mold 2 away from the fixed base 1, the two cooling elements 12 are opposite to the two opposite corners of the mold 2 to cool the mold 2.

[0045] The implementation principle of the rubber sealing strip injection molding head according to this application embodiment is as follows: the injection molding head drives the connecting part 42 and the inserting part 43 through the telescopic power 41 to realize the automatic locking and unlocking of the mold 2. In the locked state, the inserting part 43 is embedded in the groove 5 of the mold 2 and applies a clamping force, so that the mold 2 and the fixed seat 1 are tightly fitted. During the unlocking process, the inserting part 43 first pushes the mold 2 away from the fixed seat 1 to form a heat dissipation gap, and then laterally withdraws from the groove 5, which facilitates the disassembly of the mold 2.

[0046] Example 2: This application discloses an injection molding apparatus. (Refer to...) Figure 6 The injection molding device includes an injection molding machine 19 and an injection molding head. The injection molding head has flow channels that are respectively opposite to the two injection molding machines, and the two injection molding machines are arranged vertically.

[0047] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A rubber sealing strip injection molding head, characterized in that, include: The fixed base (1), mold (2), guide (3) and mounting assembly (4) are provided; the fixed base (1) is used in conjunction with the injection molding machine, the mold (2) is fixed to the guide (3), the guide (3) slides on the fixed base (1) to drive the mold (2) to move closer to or away from the fixed base (1), and the outer periphery of the mold (2) is provided with a groove (5). The mounting assembly (4) has at least one set and is mounted on the fixed base (1) to cooperate with the mold (2); each set of the mounting assembly (4) includes a telescopic power (41), a connector (42) and an insert (43); the telescopic power (41) extends in a direction parallel to the sliding direction of the guide (3); the connector (42) is connected to the telescopic end of the telescopic power (41); the insert (43) moves in a direction close to or away from the mold (2) and is linked with the connector (42); The telescopic linkage of the telescopic power (41) switches the mounting component (4) between a locked state and an unlocked state. When the mounting component (4) is in the locked state, the insert (43) inserts into the groove (5) and presses the mold (2) against the fixed seat (1). During the process of the mounting component (4) moving to the unlocked state, the insert (43) first pushes the mold (2) away from the fixed seat (1), and then the insert (43) leaves the groove (5).

2. The injection molding head for a rubber sealing strip according to claim 1, characterized in that: The insert (43) includes a heating seat (431) capable of being heated. When the mounting assembly (4) is in the locked state, the insert (43) abuts against the mold (2) through the heating seat (431).

3. The injection molding head for a rubber sealing strip according to claim 1, characterized in that: The connector (42) includes a connector (421) and a gear (422); the connector (421) is connected to the telescopic end of the telescopic power (41) and allows the insert (43) to move; the gear (422) is rotatably fitted onto the connector (421) and engages with the insert (43), and the insert (43) has a toothed portion (6) that meshes with the gear (422). During the process of moving the installation component (4) to the unlocked state, the gear (422) rotates, causing the insert (43) to move closer to or away from the mold (2) along the telescopic direction of the vertical telescopic force (41).

4. The injection molding head for a rubber sealing strip according to claim 3, characterized in that: The connector (42) also includes a sliding post (423) and an elastic part (424). The sliding column (423) slides through the connecting seat (421) in a direction parallel to the telescopic force (41). The gear (422) is coaxially sleeved on the sliding column (423), and the gear (422) is located in the insert (43) and is restricted from relative displacement with the insert (43) in the telescopic force (41) direction. The elastic part (424) cooperates with the connecting seat (421) and the sliding column (423) to give the sliding column (423) an elastic force to pass through the insert (43) at the end away from the fixed seat (1). The injection molding head also includes a limiting seat (7) opposite to the sliding column (423). The limiting seat (7) is positioned relative to the fixed seat (1). During the process of the mounting assembly (4) moving to the unlocked state, the sliding column (423) abuts against the limiting seat (7), so that the sliding column (423) resists the elastic force of the elastic element. At the same time, the sliding column (423) and the gear (422) undergo relative displacement along the axial direction of the gear (422) to drive the gear (422) to rotate.

5. The injection molding head for a rubber sealing strip according to claim 4, characterized in that: The sliding column (423) has a stroke protrusion (8) on its outer periphery, and the gear (422) has a stroke groove (9) on its inner periphery for the stroke protrusion (8) to slide into. The stroke groove (9) extends obliquely along the circumference of the gear (422).

6. The injection molding head for a rubber sealing strip according to claim 1, characterized in that: There are multiple sets of the mounting components (4). When the mounting components (4) are in the locked state, the abutments (43) of adjacent mounting components (4) approach each other and magnetically attract each other.

7. The injection molding head for a rubber sealing strip according to claim 1, characterized in that: The fixed seat (1) has a ball-head plunger (10) near the mold (2), the ball head of the ball-head plunger (10) is located on the moving path of the guide (3), and the outer periphery of the guide (3) away from the mold (2) has a limiting groove (11) for the ball head of the ball-head plunger (10) to abut.

8. The injection molding head for a rubber sealing strip according to claim 1, characterized in that: The injection molding head also includes a cooling component (12), which is positioned relative to the fixed base (1). When the mounting component (4) pushes the mold (2) to the unlocked state, the mold (2) is opposite to the cooling component (12).

9. The injection molding head for a rubber sealing strip according to claim 1, characterized in that: The fixing base (1) is covered with a heating element (13).

10. An injection molding apparatus, characterized in that, include: Two injection molding machines (19) and the injection molding head of the rubber sealing strip according to any one of claims 1-9, wherein the injection molding head has flow channels that are respectively opposite to and connected to the two injection molding machines.

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