Injection mold for automobile sealing strip

Abstract

The utility model discloses an injection mold for an automobile sealing strip, which comprises a lower mold base and an upper mold base, metal plates are fixedly connected to the inner wall of the lower mold base, semiconductor chilling plates are mounted on the outer sides of the metal plates on the two sides, a mounting frame is fixedly connected to the lower mold base positioned on the outer sides of the semiconductor chilling plates, and a fan is fixedly connected to the upper side of the mounting frame. A bearing plate is slidably connected into the lower die base, a telescopic pipe is fixedly connected to the lower side of the bearing plate, a second spring sleeves the outer side of the telescopic pipe, a limiting block is fixedly connected to the inner wall, located on the periphery of the telescopic pipe, of the lower die base, the upper die base is U-shaped, extrusion plates are fixedly connected to the two ends of the lower side of the upper die base, and a lifting plate is slidably connected into the upper die base. The upper side of the lifting plate is fixedly connected with first springs, the lifting plate located between the first springs is fixedly connected with a guide rod, the guide rod is slidably connected with an upper die base, and the upper side of the upper die base is fixedly connected with a driving piece. Through the structure, the problems that the cooling effect is poor, the speed is low and demolding is difficult are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to an injection mold for automobile sealing strips. Background Art

[0002] Automobile sealing strip is one of the important parts of automobiles. It is widely used in doors, windows, bodies, seats, sunroofs, engine boxes and trunks. It has the important functions of waterproofing, sealing, sound insulation, dustproofing, antifreeze, shock absorption, warmth preservation and energy saving, improves the comfort of driving experience and protects the body. It is generally processed and formed using injection molds. However, the surface temperature of products formed by traditional injection molds is relatively high. After injection molding, they cannot be removed immediately and need to be cooled, otherwise the operator will be scalded. Traditional cooling adopts natural cooling, which has poor cooling effect and slow speed. Moreover, after cooling, the workpiece is close to the cavity and is difficult to demold, which wastes a lot of time, reduces production efficiency and increases production cost. This requires a long cooling time for the product and reduces the production efficiency of automobile sealing strips. Therefore, an injection mold for automobile sealing strips is proposed. Utility Model Content

[0003] In view of the deficiencies of the prior art, the utility model provides an injection mold for an automobile sealing strip, which solves the problems of poor cooling effect, slow speed, and difficulty in demoulding because the workpiece adheres tightly to the cavity after cooling.

[0004] The utility model also provides an injection mold for an automobile sealing strip as described above, comprising: a lower mold base and an upper mold base, the inner wall of the lower mold base is fixedly connected to a metal plate, the outer sides of the metal plates on both sides are installed with semiconductor refrigeration plates, the lower mold base located on the outer sides of the semiconductor refrigeration plates is fixedly connected to a mounting frame, the upper side of the mounting frame is fixedly connected to a fan, the lower mold base is slidably connected to a bearing plate, the lower side of the bearing plate is fixedly connected to a telescopic tube, the outer side of the telescopic tube is sleeved with a second spring, a limiting block is fixedly connected to the inner wall of the lower mold base located on the outer periphery of the telescopic tube, the upper mold base is U-shaped, and the two ends of the lower side are fixedly connected to extrusion plates, the upper mold base is slidably connected to a lifting plate, the upper side of the lifting plate is fixedly connected to a first spring, the lifting plate between the first springs is fixedly connected to a guide rod, the guide rod is slidably connected to the upper mold base, and the upper side of the upper mold base is fixedly connected to a driving member.

[0005] According to the injection mold for an automobile sealing strip, an L-shaped through hole is provided inside the right end of the lower mold base, and an injection tube is fixedly connected to the upper end of the L-shaped through hole.

[0006] According to the injection mold for the automobile sealing strip, an injection hole is provided on the extrusion plate located at the right end of the upper mold base, and the injection hole is connected to the L-shaped through hole.

[0007] According to the injection mold for an automobile sealing strip, a one-way valve is provided in the L-shaped through hole.

[0008] According to the injection mold for automobile sealing strip, a metal dust screen is fixedly connected to the lower mold base located outside the fan, and a plurality of air outlet holes are provided on the lower mold base located on the upper side of the fan.

[0009] According to the injection mold for an automobile sealing strip, a scale bar is provided on the guide rod.

[0010] The utility model has the following beneficial effects:

[0011] 1. In the utility model, a metal plate is provided inside the lower mold base, and semiconductor refrigeration sheets and fans are provided on both sides, so that the sealing strip can be quickly cooled, and the cooling effect is good and the speed is fast.

[0012] 2. In the utility model, by respectively providing the first spring and the second spring in the upper die seat and the lower die seat, during demoulding, the sealing strip can be directly pushed out of the die seat under the action of the first spring and the second spring, which is simple to operate and convenient for rapid demoulding.

[0013] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0015] Figure 1 This is a structural diagram of an injection mold for an automobile sealing strip of the utility model;

[0016] Figure 2 This is a cross-sectional view of an injection mold for an automobile sealing strip according to the utility model;

[0017] Figure 3 The utility model is a diagram showing the internal structure of a lower mold base of an injection mold for an automobile sealing strip.

[0018] Legend:

[0019] 1. Lower die base; 2. Upper die base; 3. Extrusion plate; 31. Injection hole; 4. Lifting plate; 5. First spring; 6. Guide rod; 61. Scale bar; 7. Driving member; 8. Load-bearing plate; 9. Limit block; 10. Telescopic tube; 11. Second spring; 12. Metal plate; 13. Semiconductor cooling sheet; 14. Mounting frame; 15. Fan; 16. Metal dust screen; 17. Air outlet; 18. Injection tube; 19. L-shaped through hole. DETAILED DESCRIPTION

[0020] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0021] Reference Figure 1-3 The utility model embodiment is an injection mold for an automobile sealing strip, which includes a lower mold base 1 and an upper mold base 2. The inner wall of the lower mold base 1 is fixedly connected to a metal plate 12. Semiconductor refrigeration sheets 13 are installed on the outer sides of the metal plates 12 on both sides. The cooling side of the semiconductor refrigeration sheet 13 is in contact with the metal plate 12, which is convenient for cooling it. A mounting frame 14 is fixedly connected to the lower mold base 1 located on the outer side of the semiconductor refrigeration sheet 13. A fan 15 is fixedly connected to the upper side of the mounting frame 14. The fan 15 is used to dissipate heat for the semiconductor refrigeration sheet 13 and the metal plate 12. The lower mold base 1 located on the outer side of the fan 15 is fixedly connected to the mounting frame 14. There is a metal dustproof net 16, and a plurality of air outlet holes 17 are arranged on the lower mold base 1 located on the upper side of the fan 15. Dustproof nets are arranged in the plurality of air outlet holes 17. A bearing plate 8 is slidably connected in the lower mold base 1. The bearing plate 8 is made of metal. A telescopic tube 10 is fixedly connected to the lower side of the bearing plate 8. A second spring 11 is sleeved on the outer side of the telescopic tube 10. A limited block 9 is fixedly connected to the inner wall of the lower mold base 1 located on the outer periphery of the telescopic tube 10. An L-shaped through hole 19 is arranged inside the right end of the lower mold base 1. An injection tube 18 is fixedly connected to the upper end of the L-shaped through hole 19. A one-way valve is arranged in the L-shaped through hole 19 to prevent the raw material from flowing back after the injection molding is completed.

[0022] The upper mold base 2 is U-shaped, and the two ends of the lower side are fixedly connected with extrusion plates 3, which are made of metal. An injection hole 31 is provided on the extrusion plate 3 located at the right end of the upper mold base 2, and the injection hole 31 is communicated with the L-shaped through hole 19. A lifting plate 4 is slidably connected inside the upper mold base 2, and the lifting plate 4 is made of metal. A first spring 5 is fixedly connected to the upper side of the lifting plate 4. A guide rod 6 is fixedly connected to the lifting plate 4 located between the first springs 5, and a scale bar 61 is provided on the guide rod 6. The thickness of the seal can be accurately judged by the scale bar 61 with good accuracy. The guide rod 6 is slidably connected to the upper mold base 2, and a driving member 7 is fixedly connected to the upper side of the upper mold base 2.

[0023] Working principle: When in use, the upper mold base 2 is first moved downward by the driving member 7 to close the mold with the lower mold base 1 until the bearing plate 8 contacts the limit block 9. At this time, the injection hole 31 on the extrusion plate 3 at the right end of the upper mold base 2 is connected with the L-shaped through hole 19, and then the raw material is injected into the space between the upper mold base 2 and the lower mold base 1 through the injection tube 18. After the raw material enters the mold base, the lifting plate 4 is squeezed to make the guide rod 6 on the upper side of the lifting plate 4 move upward. At the same time, the thickness of the sealing strip can be judged according to the scale bar 61 on the guide rod 6. When the appropriate thickness is reached, the injection molding is stopped with high precision. After the injection molding is completed, the semiconductor refrigeration plates 13 and the fan 15 on both sides of the lower mold base 1 are started to quickly cool the sealing strip. The cooling effect is good and the speed is fast. After cooling is completed, the upper mold base 2 and the lower mold base 1 are opened, and the sealing strip is pushed out of the mold base under the action of the first spring 5 and the second spring 11. The operation is simple and easy to demold.

[0024] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. An injection mold for automobile sealing strips, characterized in that: include: A lower die base (1) and an upper die base (2), wherein a metal plate (12) is fixedly connected to the inner wall of the lower die base (1), semiconductor cooling plates (13) are installed on the outer sides of the metal plates (12) on both sides, a mounting frame (14) is fixedly connected to the lower die base (1) located on the outer side of the semiconductor cooling plate (13), a fan (15) is fixedly connected to the upper side of the mounting frame (14), a bearing plate (8) is slidably connected inside the lower die base (1), a telescopic tube (10) is fixedly connected to the lower side of the bearing plate (8), and a second spring is sleeved on the outer side of the telescopic tube (10). (11), a limit block (9) is fixedly connected to the inner wall of the lower die base (1) located on the outer periphery of the telescopic tube (10), the upper die base (2) is U-shaped, and the two ends of the lower side are fixedly connected to the extrusion plates (3), the upper die base (2) is slidably connected to a lifting plate (4), the upper side of the lifting plate (4) is fixedly connected to a first spring (5), the lifting plate (4) is fixedly connected to a guide rod (6) located between the first springs (5), the guide rod (6) is slidably connected to the upper die base (2), and the upper side of the upper die base (2) is fixedly connected to a driving member (7).

2. The injection mold for automobile sealing strip according to claim 1, characterized in that: An L-shaped through hole (19) is provided inside the right end of the lower mold base (1), and an injection tube (18) is fixedly connected to the upper end of the L-shaped through hole (19).

3. The injection mold for automobile sealing strip according to claim 2, characterized in that: An injection hole (31) is provided on the extrusion plate (3) located at the right end of the upper mold base (2), and the injection hole (31) is connected to the L-shaped through hole (19).

4. The injection mold for automobile sealing strip according to claim 3, characterized in that: A one-way valve is arranged in the L-shaped through hole (19).

5. The injection mold for automobile sealing strip according to claim 4, characterized in that: A metal dust screen (16) is fixedly connected to the lower die base (1) located outside the fan (15), and a plurality of air outlet holes (17) are provided on the lower die base (1) located above the fan (15).

6. The injection mold for automobile sealing strip according to claim 5, characterized in that: The guide rod (6) is provided with a scale bar (61).

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