Injection molding mold for rear door inner belt line main body

Abstract

The utility model relates to a rear door inner belt line main body injection molding mold, and belongs to the technical field of rear door inner belt line injection molding equipment. Comprising an upper template and a lower template, the upper template and the lower template are stacked up and down, a main body forming protrusion is arranged in the middle of the lower surface of the upper template, an auxiliary body receding groove is formed in the portion, on one side of the main body forming protrusion, of the upper template, and a main body forming concave is formed in the portion, corresponding to the main body forming protrusion, of the upper surface of the lower template; and an auxiliary body positioning groove is formed in the lower template on one side of the main body forming concave part. According to the injection molding mold, the manual labor amount is effectively reduced, the working efficiency of product production is improved, the flocking pieces are welded, the connection firmness is enhanced, and the problem that the flocking pieces are degummed and fall off can be effectively avoided.

Description

Technical Field

[0001] The utility model relates to a rear door inner water-cut main body injection molding die, belonging to the technical field of rear door inner water-cut injection molding equipment. Background Art

[0002] The rear door inner water cut is mainly installed in the structure of the inner edge of the car door to ensure the internal sealing after the door is closed, preventing rain, dust, etc. from entering the car, and may also play a role in sound insulation to a certain extent.

[0003] The rear door inner water-cut is composed of two areas: the main body and the auxiliary body. The existing production method of the rear door inner water-cut is: first, the main body and the auxiliary body are produced separately, and then the staff takes the main body and the auxiliary body and welds them together using welding tools. In order to reduce the sliding of the rear door inner water-cut main body relative to the door frame, glue is manually applied on the flocking sheet on the main body and then pasted to the outer surface of the main body to increase its friction, thus completing the production of the entire rear door inner water-cut.

[0004] In the above-mentioned process of producing the inner water cutting of the back door, the method of manually taking the main body and the sub-body and welding them together through welding tools is complicated and tedious to operate, and there is a problem of large amount of manual labor in manually applying glue on the flocking sheet and then sticking it to the main body. It also leads to low production efficiency of the inner water cutting of the back door. On the other hand, the flocking sheet bonded with glue is prone to degumming and falling, resulting in a low yield rate of the inner water cutting of the back door. Therefore, it is necessary to improve it. Summary of the Invention

[0005] The purpose of the utility model is to provide a rear door inner water-cut main body injection molding mold that effectively reduces manual labor and improves product production efficiency, while solving the problem that existing flocking sheets are prone to degumming and falling off, resulting in low product yield.

[0006] The technical solution of the utility model is:

[0007] A rear door inner water-cut main body injection molding mold includes an upper template and a lower template, and is characterized in that: the upper template and the lower template are stacked up and down, a main body molding protrusion is provided in the middle position of the lower surface of the upper template, a secondary body yielding groove is provided on the upper template on one side of the main body molding protrusion, a main body molding concave is provided on the upper surface of the lower template corresponding to the main body molding protrusion of the upper template, and a secondary body positioning groove is provided on the lower template on one side of the main body molding concave.

[0008] A first positioning recess is provided on the upper template on one side of the auxiliary body's yield groove, a second positioning recess is provided on the upper template on the other side of the main body's forming protrusion, a first positioning protrusion is provided on the lower template corresponding to the first positioning recess, and a second positioning protrusion is provided on the lower template corresponding to the second positioning recess.

[0009] The main body forming protrusion is provided with two injection holes, which penetrate to the upper surface of the upper template and are in the shape of a variable diameter cylinder.

[0010] The lower template is provided with a first plastic inlet hole and a second plastic inlet hole at positions corresponding to the injection holes, and a first plastic outlet hole and a second plastic outlet hole are provided at the center position of the lower template. The first plastic inlet hole is connected to the first plastic outlet hole, and the second plastic inlet hole is connected to the second plastic outlet hole.

[0011] An exhaust channel is provided on the edge of the auxiliary body positioning groove, and a plurality of exhaust holes are provided on the edge of the auxiliary body positioning groove on one side of the exhaust channel, and the exhaust holes are communicated with the exhaust channel.

[0012] One end of the main body forming recess is provided with a plurality of negative pressure suction holes.

[0013] The cross section of the auxiliary body positioning groove is open.

[0014] The beneficial effects of the present invention compared with the prior art are:

[0015] The rear door inner water-cut main body injection molding mold cooperates through the main body molding protrusion of the upper template and the main body molding concave of the lower template, and uses the two injection holes of the upper template to simultaneously inject into the cavity formed by the upper and lower combination of the main body molding protrusion and the main body molding concave. The auxiliary body positioning groove is used to position the auxiliary body, and the negative pressure suction hole fixes the flocking sheet by negative pressure suction. In this way, the main body can be directly injection molded on the auxiliary body, thereby reducing the steps of separate welding of the existing main body and auxiliary body. At the same time, the flocking sheet can be directly welded to the main body, effectively reducing manual labor and improving product production work efficiency. The flocking sheet adopts a welding method to enhance the firmness of the connection, which can effectively avoid the problem of degumming and falling of the flocking sheet. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a front view structural diagram of the utility model;

[0017] Figure 2 This is a schematic diagram of the three-dimensional structure of the upper surface of the upper template in the utility model;

[0018] Figure 3 This is a schematic diagram of the three-dimensional structure of the lower surface of the upper template in the utility model;

[0019] Figure 4 This is a schematic diagram of the three-dimensional structure of the lower template in the utility model;

[0020] Figure 5 This is a schematic diagram of the three-dimensional structure of the lower template in another perspective of the present invention;

[0021] Figure 6It is a structural diagram of the water cut in the rear door of the utility model.

[0022] In the figure: 1. Upper template; 2. Lower template; 3. Main body molding protrusion; 4. Injection hole; 5. Sub-body yield groove; 6. First positioning recess; 7. Second positioning recess; 8. First positioning protrusion; 9. Second positioning protrusion; 10. Main body molding recess; 11. Negative pressure suction hole; 12. Insertion interface; 13. Sub-body positioning groove; 14. Anti-slip teeth; 15. Exhaust channel; 16. Exhaust hole; 17. First plastic inlet hole; 18. Second plastic inlet hole; 19. First plastic outlet hole; 20. Second plastic outlet hole; 21. Main body; 22. Sub-body; 23. Flocking sheet. DETAILED DESCRIPTION

[0023] As attached Figure 1-6 shown

[0024] The rear door inner water-cut main body injection molding mold includes an upper template 1 and a lower template 2, and the upper template 1 and the lower template 2 are stacked up and down. During operation, when the upper template 1 and the lower template 2 are close to each other and stacked up and down, injection molding can be performed. When the upper template 1 and the lower template 2 are away from each other, the upper template 1 gives way to the lower template 2, making it convenient for the staff to remove the product (the rear door inner water-cut main body) from the lower template 2.

[0025] A main body molding protrusion 3 is provided at the middle position of the lower surface of the upper template 1, and two injection holes 4 are provided on the main body molding protrusion 3 at intervals. The injection hole 4 passes through the upper surface of the upper template 1, and the injection hole 4 is a variable diameter cylindrical shape. A first inlet hole 17 and a second inlet hole 18 are provided at positions corresponding to the injection hole 4 on the lower template 2, and a first outlet hole 19 and a second outlet hole 20 are provided at the center position of the lower template 2. The first inlet hole 17 is connected to the first outlet hole 19, and the second inlet hole 18 is connected to the second outlet hole 20. When working, the injection hole 4 is connected to the injection pipe of the injection molding machine set up on site. The injection molding machine can use the injection pipe to pass from the injection hole 4 through the first inlet hole 17 and the second inlet hole 18, and then through the first outlet hole 19 and the second outlet hole 20 to perform injection molding between the upper template 1 and the lower template 2.

[0026] A sub-body clearance groove 5 is provided on the upper template 1 on one side of the main body forming protrusion 3. The sub-body clearance groove 5 is configured to conform to half of the outer contour of the sub-body. During operation, the sub-body clearance groove 5 can cooperate with the sub-body positioning groove 13 to press the top of the sub-body to prevent the sub-body from slipping during the extrusion process, resulting in inaccurate extrusion positioning.

[0027] A first positioning recess 6 is provided on the upper template 1 on one side of the auxiliary body yield groove 5, and a second positioning recess 7 is provided on the upper template 1 on the other side of the main body forming protrusion 3. A first positioning protrusion 8 is provided on the lower template 2 corresponding to the first positioning recess 6, and a second positioning protrusion 9 is provided on the lower template 2 corresponding to the second positioning recess 7. During operation, when the upper template 1 and the lower template 2 are close to each other and stacked up and down, the first positioning protrusion 8 enters into the first positioning recess 6, and the second positioning protrusion 9 enters into the second positioning recess 7. Through the cooperation of the first positioning protrusion 8 with the first positioning recess 6 and the cooperation of the second positioning protrusion 9 with the second positioning recess 7, the precise positioning of the upper template 1 and the lower template 2 is achieved.

[0028] A main body molding recess 10 is provided on the upper surface of the lower template 2 corresponding to the main body molding protrusion 3 of the upper template 1. The main body molding recess 10 cooperates with the main body molding protrusion 3 of the upper template 1 to form a closed cavity for injection molding of the main body. Four negative pressure suction holes 11 are provided at one end of the main body molding recess 10. A plug-in interface 12 is provided on the lower template 2 on one side of the negative pressure suction hole 11. The negative pressure suction hole 11 is connected to the plug-in interface 12, and the plug-in interface 12 can be externally connected to a negative pressure fan.

[0029] A sub-body positioning groove 13 is provided on the lower template 2 on one side of the main body forming concave 10. The cross-section of the sub-body positioning groove 13 corresponds to the contour of the other half of the outer contour of the sub-body. An anti-slip tooth 14 is provided on the top of the sub-body positioning groove 13. The anti-slip tooth 14 is provided corresponding to the sub-body giving way groove 5. The anti-slip teeth 14 of the sub-body giving way groove 5 and the sub-body positioning groove 13 press the top of the sub-body tightly. The anti-slip tooth 14 can further improve the clamping degree of the sub-body and improve the clamping effect of the sub-body.

[0030] The auxiliary body positioning groove 13 has an opening at one end in the cross section. During operation, after the injection molding is completed, the product can be taken out from the auxiliary body positioning groove 13 of the lower template 2 through the opening of the auxiliary body positioning groove 13 .

[0031] An exhaust channel 15 is provided on the edge of the auxiliary body positioning groove 13, and a plurality of exhaust holes 16 are provided on the edge of the auxiliary body positioning groove 13 on one side of the exhaust channel 15. The exhaust holes 16 are connected to the exhaust channel 15. When working, the air in the closed cavity between the upper template 1 and the lower template 2 can be discharged outward through the exhaust holes 16 and the exhaust channel 15 to ensure the density of the main body and avoid the generation of voids in the main body during injection molding.

[0032] When the rear door inner water-cut main body injection molding mold is injection-molding, first insert the auxiliary body 22 into the auxiliary body positioning groove 13, then place the flocking sheet 23 above the negative pressure suction hole 11, start the negative pressure fan, and the negative pressure fan absorbs and positions the flocking sheet 23 through the negative pressure suction hole 11. When the upper template 1 approaches the lower template 2, the first positioning protrusion 8 is positioned in conjunction with the first positioning recess 6, and the second positioning protrusion 9 is positioned in conjunction with the second positioning recess 7. The upper template 1 and the lower template 2 are stacked up and down. Since the top of the auxiliary body positioning groove 13 is provided with an anti-slip tooth 14, the anti-slip tooth 14 of the auxiliary body giving way groove 5 and the auxiliary body positioning groove 13 press the top of the auxiliary body tightly. At the same time, the main forming protrusion 3 of the upper template 1 and the lower template 2 The main body molding concave 10 cooperates to enclose a closed cavity, and the injection molding machine injects the mold between the upper template 1 and the lower template 2 through the injection tube from the injection hole 4, the first plastic inlet hole 17, the second plastic inlet hole 18, the first plastic outlet hole 19 and the second plastic outlet hole 20. During the injection molding process, the air in the cavity is discharged outward through the exhaust hole 16 and the exhaust channel 15. When the injection molding is completed, the upper template 1 is away from the lower template 2, the negative pressure fan is turned off, and the product is taken out from the lower template 2. At this time, the main body 21 of the product is directly injection molded and connected to the sub-body 22. At the same time, a flocking sheet 23 is welded on the main body 21, and then the redundant parts of the main body 21 are sheared. Repeat the above operation to cycle the injection molding of the product.

[0033] The rear door inner water-cut main body injection molding mold cooperates through the main body molding protrusion 3 of the upper template 1 and the main body molding concave 10 of the lower template 2, and uses the two injection holes 4 of the upper template 1 to simultaneously inject into the cavity formed by the upper and lower combination of the main body molding protrusion 3 and the main body molding concave 10. The sub-body positioning groove 13 is used to position the sub-body, and the negative pressure suction hole 11 fixes the flocking sheet by negative pressure suction, thereby realizing the main body directly injection molding on the sub-body, thereby reducing the existing steps of separate welding of the main body and the sub-body, and at the same time, the flocking sheet can be directly welded to the main body, effectively reducing manual labor and improving the work efficiency of product production. The flocking sheet adopts a welding method to enhance the firmness of the connection, which can effectively avoid the problem of degumming and falling of the flocking sheet.

Claims

1. A rear door inner water-cut main body injection molding mold, comprising an upper mold plate (1) and a lower mold plate (2), characterized in that: The upper template (1) and the lower template (2) are stacked up and down, a main body forming protrusion (3) is provided at the middle position of the lower surface of the upper template (1), a secondary body giving way groove (5) is provided on the upper template (1) on one side of the main body forming protrusion (3), a main body forming concave (10) is provided on the upper surface of the lower template (2) corresponding to the main body forming protrusion (3) of the upper template (1), and a secondary body positioning groove (13) is provided on the lower template (2) on one side of the main body forming concave (10).

2. The rear door inner water-cut main body injection molding mold according to claim 1, characterized in that: A first positioning recess (6) is provided on the upper template (1) on one side of the auxiliary body yielding groove (5), a second positioning recess (7) is provided on the upper template (1) on the other side of the main body forming protrusion (3), a first positioning protrusion (8) is provided on the lower template (2) corresponding to the first positioning recess (6), and a second positioning protrusion (9) is provided on the lower template (2) corresponding to the second positioning recess (7).

3. The rear door inner water-cut main body injection molding mold according to claim 1, characterized in that: The main body molding protrusion (3) is provided with two injection holes (4), the injection holes (4) penetrate to the upper surface of the upper template (1), and the injection holes (4) are in the shape of a variable diameter cylinder.

4. The rear door inner water-cut main body injection molding mold according to claim 3, characterized in that: A first plastic inlet hole (17) and a second plastic inlet hole (18) are provided at positions corresponding to the injection hole (4) on the lower template (2), and a first plastic outlet hole (19) and a second plastic outlet hole (20) are provided at a central position on the upper surface of the lower template (2). The first plastic inlet hole (17) is connected to the first plastic outlet hole (19), and the second plastic inlet hole (18) is connected to the second plastic outlet hole (20).

5. The rear door inner water-cut main body injection molding mold according to claim 1, characterized in that: An exhaust channel (15) is provided on the edge of the auxiliary body positioning groove (13), and a plurality of exhaust holes (16) are provided on the edge of the auxiliary body positioning groove (13) on one side of the exhaust channel (15), and the exhaust holes (16) are communicated with the exhaust channel (15).

6. The rear door inner water-cut main body injection molding mold according to claim 1, characterized in that: One end of the main body forming recess (10) is provided with a plurality of negative pressure suction holes (11).

7. The rear door inner water-cut main body injection molding mold according to claim 1, characterized in that: The auxiliary body positioning groove (13) has an open cross section.

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