Extrusion device for automobile sealing strip

Abstract

The utility model relates to an extrusion device for an automobile sealing strip and belongs to the technical field of automobile sealing strip extrusion equipment. Comprising a bottom plate, a first plastic extruding machine and a second plastic extruding machine, the first plastic extruding machine and the second plastic extruding machine are distributed on the bottom plate in a right-angle mode, a forming cylinder die is installed on the bottom plate at the intersection of the first plastic extruding machine and the second plastic extruding machine through a supporting seat, and the forming cylinder die is connected with the first plastic extruding machine through a first forming die head. And the forming cylinder die is connected with the second plastic extruding machine through a second forming die head. According to the extrusion device for the automobile sealing strip, different molten materials can be jointly extruded, the subsequent process of manually smearing glue for bonding is avoided, the manual labor amount is effectively reduced, and meanwhile the product consistency can be guaranteed through the co-extrusion mode.

Description

Technical Field

[0001] The utility model relates to an extrusion device for automobile sealing strips, belonging to the technical field of automobile sealing strip extrusion equipment. Background Art

[0002] Automobile sealing strips are usually installed around the door frame. They have certain waterproof, soundproof, dustproof and heat-insulating functions, and are important sealing components of automobile doors. Existing automobile sealing strips are composed of a main part and a water-cut part. The main part is made of plastic material, while the water-cut part is made of rubber material. In this way, the main part ensures the stability of the installation of the automobile sealing strip while the water-cut part can also seal the door frame to adapt to the assembly needs of the door frame.

[0003] The existing method for producing automobile sealing strips is: first, a main body is produced by an extruder, and then a water-cut part is produced by another extruder. The produced main body and water-cut parts are manually applied with glue to bond the main body and water-cut parts to each other, thereby forming a finished automobile sealing strip. The above-mentioned manual bonding method not only requires manual application of glue, but also manual alignment of the main body and water-cut parts, which is cumbersome to operate and has a large amount of manual labor. At the same time, due to individual differences among workers, manual bonding is prone to the problem of skew bonding between the main body and water-cut parts, resulting in a low product yield. Therefore, it is necessary to improve it. Summary of the Invention

[0004] The purpose of the utility model is to provide an extrusion device for automobile sealing strips which can effectively reduce manual labor and ensure product consistency.

[0005] The technical solution of the utility model is:

[0006] An extrusion device for an automobile sealing strip comprises a base plate, a first extruder and a second extruder, and is characterized in that the first extruder and the second extruder are distributed at right angles on the base plate, a forming cylinder mold is installed on the base plate at the intersection of the first extruder and the second extruder through a support seat, the forming cylinder mold is connected to the first extruder through a first forming die head, and the forming cylinder mold is connected to the second extruder through a second forming die head.

[0007] The first extruder and the second extruder respectively include a frame, a collecting hopper, an extrusion cylinder and an extrusion shaft. The extrusion cylinder is mounted on the frame, and a collecting hopper is mounted on the circumference of the extrusion cylinder. The collecting hopper is connected to the inside of the extrusion cylinder. The extrusion shaft is movably mounted in the extrusion cylinder through a bearing seat. Extrusion blades are arranged on the circumference of the extrusion shaft in the extrusion cylinder. One end of the extrusion shaft extends to the outside of the extrusion cylinder. A driven pulley is arranged on the extrusion shaft extending to the outside of the extrusion cylinder. A driving motor is mounted on the frame below the extrusion cylinder. A driving pulley is arranged on the transmission shaft of the driving motor corresponding to the driven pulley. The driving pulley and the driven pulley are connected by a transmission belt. An electric heating cylinder is arranged on the outside of the extrusion cylinder.

[0008] The forming cylinder mold is cylindrical, and a first flange is provided at one end of the forming cylinder mold. A first contour extrusion channel is provided in the forming cylinder mold, and a second contour extrusion channel is provided above the first contour extrusion channel. The first contour extrusion channel and the second contour extrusion channel are correspondingly connected. A feed port is provided on the circumference of the forming cylinder mold corresponding to the second contour extrusion channel, and the feed port is connected to the second contour extrusion channel.

[0009] The first molding die is in the shape of a cone, and a second flange is provided at one end of the first molding die. The second flange is locked and connected to the first flange by bolts. A third flange is provided at the other end of the first molding die, and the third flange is fixedly installed on the first extruder by bolts. A first electric heating wire is mounted on the outer circle of the first molding die.

[0010] The first molding die head is provided with a first molding channel with a trumpet-shaped cross section. One end of the molding channel is the same size as the first contoured extrusion channel of the molding drum die and is correspondingly connected.

[0011] The second molding die head is in the shape of a cone, one end of the second molding die head is curved, a boss is provided on the curved end head, and a fourth flange is provided on the other end of the second molding die head. The boss is plugged and fixed with the feed port of the molding cylinder mold, and a second electric heating wire is installed on the circumference of the second molding die head.

[0012] A second molding channel is provided inside the second molding die head. One end of the second molding channel extends to the boss. The second molding channel is tapered.

[0013] The beneficial effects of the present invention compared with the prior art are:

[0014] The extrusion device of the automobile sealing strip first extrude molten plastic into the shape of the main part of the automobile sealing strip through a first extruder, and the formed plastic enters the first contour extrusion channel through the first forming channel and is naturally cooled and shaped in the first contour extrusion channel; the second extruder pushes the rubber melt through the second forming channel of the second forming die head and enters the second contour extrusion channel, the rubber melt entering the second contour extrusion channel and the formed plastic are mutually welded, and at the same time are extruded outwardly along the second contour extrusion channel into the shape of the water-cut part of the automobile sealing strip, and the formed plastic and the formed rubber are hot-melted and combined into the automobile sealing strip after cooling. The extrusion device of the automobile sealing strip can extrude different molten materials together, avoiding the subsequent manual glue application and bonding process, effectively reducing manual labor, and at the same time, the co-extrusion through the mold can also ensure product consistency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overhead structure of the utility model;

[0016] Figure 2 for Figure 1 A schematic diagram of the front structure of FIG.

[0017] Figure 3 This is a schematic diagram of the three-dimensional structure of the first molding die head in the present utility model;

[0018] Figure 4 This is a schematic cross-sectional view of the second molding die head in the present invention;

[0019] Figure 5 for Figure 2 Schematic diagram of the cross-sectional structure along the AA direction;

[0020] Figure 6 for Figure 2 Schematic diagram of the cross-sectional structure along the BB direction.

[0021] In the figure: 1. Base plate; 2. First extruder; 3. Second extruder; 4. Frame; 5. Collecting hopper; 6. Extrusion cylinder; 7. Extrusion shaft; 8. Extrusion blade; 9. Driven pulley; 10. Driving motor; 11. Active pulley; 12. Transmission belt; 13. Electric heating cylinder; 14. Bearing seat; 15. Support seat; 16. Molding cylinder mold; 17. First flange; 18. First contoured extrusion channel; 19. Second contoured extrusion channel; 20. Feed port; 21. First molding die; 22. Second flange; 23. Third flange; 24. First electric heating wire; 25. First molding channel; 26. Second molding die; 27. Boss; 28. Second molding channel; 29. ​​Second electric heating wire; 30. Fourth flange. DETAILED DESCRIPTION

[0022] As attached Figure 1-6 shown

[0023] The extrusion device of the automobile sealing strip includes a base plate 1, a first extruder 2 and a second extruder 3. The first extruder 2 and the second extruder 3 are distributed at right angles on the base plate 1. The first extruder 2 and the second extruder 3 have the same structure. The first extruder 2 and the second extruder 3 include a frame 4, a collecting hopper 5, an extrusion cylinder 6 and an extrusion shaft 7. The extrusion cylinder 6 is mounted on the frame 4. The collecting hopper 5 is mounted on the circumference of the extrusion cylinder 6. The collecting hopper 5 is connected to the inside of the extrusion cylinder 6. When working, the collecting hopper 5 of the first extruder 2 is filled with plastic particles. Under the action of its own gravity, the plastic particles fall from the collecting hopper 5 of the first extruder 2 into the extrusion cylinder 6. The collecting hopper 5 of the second extruder 3 is filled with rubber particles. Under the action of its own gravity, the rubber particles fall from the collecting hopper 5 of the second extruder 3 into the extrusion cylinder 6.

[0024] An extrusion shaft 7 is movably mounted in the extrusion cylinder 6 through a bearing seat 14, and an extrusion blade 8 is provided on the circumference of the extrusion shaft 7 in the extrusion cylinder 6. One end of the extrusion shaft 7 extends to the outside of the extrusion cylinder 6, and a driven pulley 9 is provided on the extrusion shaft 7 extending to the outside of the extrusion cylinder 6. A drive motor 10 is mounted on the frame 4 below the extrusion cylinder 6, and a driving pulley 11 is fixedly mounted on the transmission shaft of the drive motor 10 corresponding to the driven pulley 9. The driving pulley 11 and the driven pulley 9 are connected by a transmission belt 12. When working, the transmission shaft of the drive motor 10 drives the driving pulley 11 to rotate, and the driving pulley 11 drives the driven pulley 9 to rotate through the transmission belt 12, and the driven pulley 9 drives the extrusion shaft 7 and the extrusion blade 8 to rotate synchronously to perform extrusion operation.

[0025] An electric heating cylinder 13 is mounted on the outside of the extrusion cylinder 6. The electric heating cylinder 13 is connected to an external power supply. When working, the electric heating cylinder 13 heats the extrusion cylinder 6. The electric heating cylinder 13 of the first extruder 2 ensures that the plastic particles inside the extrusion cylinder 6 are molten, and the electric heating cylinder 13 of the second extruder 3 ensures that the rubber particles inside the extrusion cylinder 6 are molten.

[0026] A support base 15 is fixedly installed on the bottom plate 1 at the intersection of the first extruder 2 and the second extruder 3, and a forming cylinder mold 16 is fixedly installed on the support base 15. The forming cylinder mold 16 is cylindrical, and a first flange 17 is provided at one end of the forming cylinder mold 16. A first profiling extrusion channel 18 is provided through the forming cylinder mold 16. The first profiling extrusion channel 18 is the same as the outer contour of the cross-section of the main part of the automobile sealing strip. A second profiling extrusion channel 19 is provided above the first profiling extrusion channel 18. The second profiling extrusion channel 19 is the same as the outer contour of the cross-section of the water-cut part of the automobile sealing strip. The first profiling extrusion channel 18 and the second profiling extrusion channel 19 are communicated. A feed port 20 is provided on the circumference of the forming cylinder mold 16 corresponding to the second profiling extrusion channel 19, and the feed port 20 is communicated with the second profiling extrusion channel 19.

[0027] The molding cylinder mold 16 is connected to the first extruder 2 through the first molding die head 21. The first molding die head 21 is conical. A second flange 22 is provided at one end of the first molding die head 21. The second flange 22 is locked and connected to the first flange 17 of the molding cylinder mold 16 by bolts. A third flange 23 is provided at the other end of the first molding die head 21. The third flange 23 is fixedly installed on the end of the extrusion cylinder 6 of the first extruder 2 by bolts. A first electric heating wire 24 is mounted on the outer circle of the first molding die head 21. The first electric heating wire 24 heats the first molding die head 21 to ensure that the plastic inside it remains in a molten state, which is convenient for subsequent extrusion work.

[0028] A first molding channel 25 with a trumpet-shaped cross-section is provided inside the first molding die head 21. One end of the molding channel is the same size as and correspondingly connected to the first contoured extrusion channel 18 of the molding drum mold 16. During operation, the first molding channel 25 extrude the main part of the automobile sealing strip into the first contoured extrusion channel 18.

[0029] The molding cylinder mold 16 is connected to the second extruder 3 through the second molding die head 26. The second molding die head 26 is conical, and one end of the second molding die head 26 is curved. A boss 27 is provided on the curved end. The boss 27 is plugged and fixed with the feed port 20 of the molding cylinder mold 16. The other end of the second molding die head 26 is provided with a fourth flange 30. The fourth flange 30 is fixed to the end of the extrusion cylinder 6 of the second extruder 3 by bolts.

[0030] A second molding channel 28 is provided inside the second molding die 26. The second molding channel 28 is tapered to increase the internal pressure of the second molding channel 28 and facilitate the extrusion operation. One end of the second molding channel 28 extends to the boss 27. During operation, the molten rubber particles in the second molding channel 28 of the second molding die 26 enter the feed port 20 through the second molding channel 28, and then enter the second contour extrusion channel 19 from the feed port 20.

[0031] A second electric heating wire 29 is mounted on the circumference of the second molding die 26 . The second electric heating wire 29 heats the second molding die 26 to ensure that the rubber inside the die remains in a molten state, facilitating subsequent extrusion work.

[0032] When the extrusion device of the automobile sealing strip is used, the first extruder 2 is first started, and the electric heating cylinder 13 of the first extruder 2 heats the plastic particles entering the extrusion cylinder 6 into a molten material. The extrusion shaft 7 and the extrusion blade 8 of the first extruder 2 cooperate to push the molten plastic forward into the first forming die 21, and the molten plastic is extruded into the shape of the main part of the automobile sealing strip through the first forming channel 25 of the first forming die 21. The formed plastic enters the first contour extrusion channel 18 from the first forming channel 25 and is naturally cooled and shaped in the first contour extrusion channel 18.

[0033] When the molded plastic enters from one end of the first profile extrusion channel 18 and is discharged from the other end of the first profile extrusion channel 18, the second extruder 3 is turned on, and the second extruder 3 pushes the rubber melt through the second molding channel 28 of the second molding die 26 into the second profile extrusion channel 19. The rubber melt entering the second profile extrusion channel 19 is welded with the molded plastic and extruded outward along the second profile extrusion channel 19 into the shape of the water-cut part of the automobile sealing strip. Thus, the molded plastic and the molded rubber hot melt are combined into the automobile sealing strip after cooling, thereby completing the extrusion operation of the automobile sealing strip. The extrusion device of the automobile sealing strip can extrude different molten materials together, avoiding the subsequent manual glue application process, effectively reducing the amount of manual labor, and at the same time, the co-extrusion through the mold can also ensure product consistency.

Claims

1. An extrusion device for an automobile sealing strip, comprising a base plate (1), a first extruder (2) and a second extruder (3), characterized in that: A first extruder (2) and a second extruder (3) are arranged at right angles on the bottom plate (1). A forming cylinder mold (16) is mounted on the bottom plate (1) at the intersection of the first extruder (2) and the second extruder (3) via a support seat (15). The forming cylinder mold (16) is connected to the first extruder (2) via a first forming die head (21), and the forming cylinder mold (16) is connected to the second extruder (3) via a second forming die head (26).

2. The extrusion device for an automobile sealing strip according to claim 1, characterized in that: The first extruder (2) and the second extruder (3) respectively include a frame (4), a collecting hopper (5), an extrusion barrel (6) and an extrusion shaft (7). The frame (4) is provided with an extrusion barrel (6). The collecting hopper (5) is provided on the circumference of the extrusion barrel (6). The collecting hopper (5) is communicated with the interior of the extrusion barrel (6). The extrusion shaft (7) is movably provided in the extrusion barrel (6) through a bearing seat (14). The extrusion shaft (7) in the extrusion barrel (6) is provided with extrusion blades (8) on the circumference. The extrusion shaft (7) ) one end extends to the outside of the extrusion cylinder (6), a driven pulley (9) is provided on the extrusion shaft (7) extending to the outside of the extrusion cylinder (6), a driving motor (10) is installed on the frame (4) below the extrusion cylinder (6), a driving pulley (11) is provided on the transmission shaft of the driving motor (10) corresponding to the driven pulley (9), the driving pulley (11) and the driven pulley (9) are connected by a transmission belt (12), and an electric heating cylinder (13) is provided on the outside of the extrusion cylinder (6).

3. The extrusion device for an automobile sealing strip according to claim 1, characterized in that: The molding cylinder mold (16) is cylindrical, and a first flange (17) is provided at one end of the molding cylinder mold (16). A first profiling extrusion channel (18) is provided in the molding cylinder mold (16), and a second profiling extrusion channel (19) is provided above the first profiling extrusion channel (18). The first profiling extrusion channel (18) and the second profiling extrusion channel (19) are correspondingly connected. A feed port (20) is provided on the circumference of the molding cylinder mold (16) corresponding to the second profiling extrusion channel (19), and the feed port (20) is connected to the second profiling extrusion channel (19).

4. The extrusion device for an automobile sealing strip according to claim 1, characterized in that: The first molding die (21) is in the shape of a cone, and a second flange (22) is provided at one end of the first molding die (21), and the second flange (22) is locked and connected to the first flange (17) by bolts. A third flange (23) is provided at the other end of the first molding die (21), and the third flange (23) is fixedly installed on the first extruder (2) by bolts. A first electric heating wire (24) is sleeved on the outer circle of the first molding die (21).

5. The extrusion device for an automobile sealing strip according to claim 1, characterized in that: The first molding die (21) is provided with a first molding channel (25) with a trumpet-shaped cross section. One end of the molding channel is the same size as the first contoured extrusion channel (18) of the molding barrel die (16) and is correspondingly connected.

6. The extrusion device for an automobile sealing strip according to claim 1, characterized in that: The second forming die (26) is in the shape of a cone, one end of the second forming die (26) is curved, a boss (27) is provided on the curved end, and a fourth flange (30) is provided on the other end of the second forming die (26). The boss (27) is plugged and fixed with the feed port (20) of the forming cylinder mold (16), and a second electric heating wire (29) is sleeved on the circumference of the second forming die (26).

7. The extrusion device for an automobile sealing strip according to claim 1, characterized in that: A second molding channel (28) is provided inside the second molding die head (26), one end of the second molding channel (28) extends to the boss (27), and the second molding channel (28) is tapered.

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