Injection mold for vehicle bumper

Abstract

The utility model relates to the technical field of injection molds, and discloses an injection mold for a vehicle bumper, which comprises a base, a bearing frame is fixedly mounted at the top end of the base, a fixed mold is arranged at the top end of the bearing frame, a cooling structure is arranged on the fixed mold, an ejection structure is arranged on the bearing frame, and the ejection structure is arranged on the bearing frame. The ejection structure is movably connected with the interior of the fixed mold and fixedly connected with the bottom wall of an inner cavity of the bearing frame, a through hole is formed in the bottom wall of a mold cavity of the fixed mold, the inner cavity wall of the through hole is movably connected with the ejection structure, and positioning columns are fixedly installed at the four corners of the top end of the fixed mold. The cooling structure comprises heat dissipation fins, the heat dissipation fins are fixedly connected with the outer surface of the fixed mold, the heat dissipation fins are arranged in a linear array, and the cooling structure further comprises a cooling pipe. According to the utility model, not only can the injection-molded vehicle bumper be conveniently and quickly demoulded, but also the injection-molded vehicle bumper can be quickly ejected out.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to an injection mold for a vehicle bumper. Background Art

[0002] The vehicle bumper not only affects the appearance of the car, but also provides safety for the car. Therefore, the vehicle bumper must not only have a good appearance, but also have good quality strength. At present, in order to meet the demand for lightweight vehicles, the bumper at the front of the vehicle is gradually transformed from metal materials to high-performance plastics. Therefore, injection molds for vehicle bumpers came into being.

[0003] At present, vehicle bumpers are generally removed manually after being molded on injection molds. However, during injection molding, the vehicle bumper will adhere to the mold surface, making it difficult to demold the vehicle bumper. Therefore, we proposed an injection mold for vehicle bumpers. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the utility model provides an injection mold for a vehicle bumper, which has the advantages of convenient and quick demolding of the injection-molded vehicle bumper, and solves the problem that the vehicle bumper will fit with the mold surface, making it difficult to demold the vehicle bumper.

[0006] (II) Technical solution

[0007] In order to achieve the above-mentioned purpose of facilitating rapid demolding of an injection-molded vehicle bumper, the utility model provides the following technical solution: an injection mold for a vehicle bumper, comprising a base, a bearing frame fixedly mounted on the top of the base, a fixed mold provided on the top of the bearing frame, a cooling structure provided on the fixed mold, an ejection structure provided on the bearing frame, the ejection structure being movably connected to the interior of the fixed mold, and the ejection structure being fixedly connected to the bottom wall of the inner cavity of the bearing frame.

[0008] As a preferred technical solution of the utility model, a through hole is opened on the bottom wall of the mold cavity of the fixed mold, the inner cavity wall of the through hole is movably connected to the ejection structure, and positioning columns are fixedly installed at the four corners of the top of the fixed mold to facilitate the ejection structure to penetrate the fixed mold.

[0009] As a preferred technical solution of the utility model, the cooling structure includes heat dissipation fins, which are fixedly connected to the outer surface of the fixed mold and arranged in a linear array to quickly dissipate the heat on the fixed mold based on the principle of heat exchange.

[0010] As a preferred technical solution of the utility model, the cooling structure also includes a cooling pipe, the top end of the cooling pipe is fixedly connected to the bottom end of the fixed mold, one end of the cooling pipe is fixedly installed with a liquid inlet pipe, and the end of the liquid inlet pipe away from the cooling pipe is connected to the external liquid inlet structure;

[0011] A drain pipe is fixedly installed at the other end of the cooling pipe. The end of the drain pipe away from the cooling pipe is connected to the external drain structure. Cooling water is provided to the inlet pipe through the external liquid inlet structure. At this time, the cooling water enters the cooling pipe through the inner cavity of the inlet pipe, and flows from the inner cavity of the drain pipe to the external drain structure. During this period, the heat on the fixed mold is taken away by the heat exchange principle. At the same time, the heat dissipation fins dissipate the heat on the fixed mold, thereby facilitating rapid heat dissipation of the fixed mold, and then facilitating rapid demolding of the injection-molded vehicle bumper.

[0012] As a preferred technical solution of the utility model, the inner cavity side wall of the carrier frame is provided with first waist-shaped holes, which are arranged in a circular array to facilitate external air to enter the inner cavity of the carrier frame through the inner cavity of the first waist-shaped holes.

[0013] As an optimal technical solution of the present utility model, the ejection structure includes a hydraulic push rod, the bottom end of the hydraulic push rod is fixedly connected to the bottom wall of the inner cavity of the supporting frame, a hollow disk is fixedly installed on the top of the hydraulic push rod, a hollow rod is fixedly installed on the top of the hollow disk, the hollow rods are arranged in a circular array, and the outer surface of the hollow rod is movably connected to the inner cavity of the through hole. By starting the hydraulic push rod, the hydraulic push rod drives the hollow disk to move, and the hollow disk drives the hollow rod to move in the inner cavity of the through hole, and penetrates the through hole to eject the injection molded vehicle bumper in the fixed mold. At the same time, the outside air enters the inner cavity of the supporting frame through the first waist-shaped hole cavity, and then enters the fixed mold cavity through the through hole cavity, the hollow disk cavity, the hollow rod cavity and the second waist-shaped hole cavity or through the hollow rod cavity and the second waist-shaped hole cavity to ensure that the external pressure is balanced with the pressure in the fixed mold, thereby facilitating the rapid ejection of the injection-molded vehicle bumper.

[0014] As a preferred technical solution of the utility model, through holes are opened on the inner cavity wall of the hollow disk, and the through holes are arranged in a circular array to facilitate external air to enter the cavity of the hollow disk through the inner cavity of the through holes.

[0015] As a preferred technical solution of the utility model, a second waist-shaped hole is opened in the inner cavity wall of the hollow rod to facilitate the external air to enter the mold cavity of the fixed mold through the cavity of the hollow rod and the inner cavity of the second waist-shaped hole to ensure that the external pressure is balanced with the pressure in the fixed mold.

[0016] (III) Beneficial effects

[0017] Compared with the prior art, the utility model provides an injection mold for a vehicle bumper, which has the following

[0018] Beneficial effects:

[0019] 1. The injection mold for the vehicle bumper provides cooling water to the liquid inlet pipe through an external liquid inlet structure. At this time, the cooling water enters the cooling pipe through the inner cavity of the liquid inlet pipe, and flows from the inner cavity of the liquid discharge pipe to the external liquid discharge structure. During this period, the heat on the fixed mold is taken away by the heat exchange principle. At the same time, the heat dissipation fins dissipate the heat on the fixed mold, thereby facilitating rapid heat dissipation of the fixed mold, and then facilitating rapid demoulding of the injection-molded vehicle bumper.

[0020] 2. The injection mold for the vehicle bumper starts the hydraulic push rod, which drives the hollow disk to move, and the hollow disk drives the hollow rod to move in the through-hole cavity, and penetrates the through-hole to eject the injection-molded vehicle bumper in the fixed mold. At the same time, the outside air enters the inner cavity of the bearing frame through the first waist-shaped hole cavity, and then enters the fixed mold cavity through the through-hole cavity, the hollow disk cavity, the hollow rod cavity and the second waist-shaped hole cavity or through the hollow rod cavity and the second waist-shaped hole cavity, so as to ensure that the external pressure is balanced with the pressure in the fixed mold, thereby facilitating the rapid ejection of the injection-molded vehicle bumper. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a main stereoscopic view of the utility model;

[0022] Figure 2 This is a front perspective view of the connection between the fixed mold and the cooling structure of the utility model;

[0023] Figure 3 This is a bottom-up stereogram of the connection between the fixed mold and the cooling structure of the utility model;

[0024] Figure 4 This is a three-dimensional diagram of the connection between the load-bearing frame and the ejection structure of the utility model.

[0025] In the figure: 1. base; 2. bearing frame; 21. first waist-shaped hole; 3. fixed mold; 31. through hole; 32. positioning column; 4. cooling structure; 41. heat dissipation fin; 42. cooling pipe; 43. drain pipe; 44. liquid inlet pipe; 5. ejection structure; 51. hydraulic push rod; 52. hollow disk; 521. through hole; 53. hollow rod; 531. second waist-shaped hole. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0027] Example 1

[0028] Reference Figure 1-3 , which is the first embodiment of the utility model, provides an injection mold for a vehicle bumper, including a base 1, a bearing frame 2 is fixedly installed on the top of the base 1, a fixed mold 3 is arranged on the top of the bearing frame 2, a cooling structure 4 is arranged on the fixed mold 3, and an ejection structure 5 is arranged on the bearing frame 2, the ejection structure 5 is movably connected to the inside of the fixed mold 3, and the ejection structure 5 is fixedly connected to the bottom wall of the inner cavity of the bearing frame 2.

[0029] A through hole 31 is provided on the bottom wall of the mold cavity of the fixed mold 3 , and the inner wall of the through hole 31 is movably connected to the ejection structure 5 . Positioning columns 32 are fixedly installed at the four corners of the top end of the fixed mold 3 .

[0030] The cooling structure 4 includes heat dissipation fins 41 , which are fixedly connected to the outer surface of the fixed mold 3 , and the heat dissipation fins 41 are arranged in a linear array.

[0031] The cooling structure 4 further includes a cooling pipe 42, the top end of the cooling pipe 42 is fixedly connected to the bottom end of the fixed mold 3, one end of the cooling pipe 42 is fixedly installed with a liquid inlet pipe 44, and one end of the liquid inlet pipe 44 away from the cooling pipe 42 is connected to the external liquid inlet structure;

[0032] A drain pipe 43 is fixedly mounted on the other end of the cooling pipe 42 , and one end of the drain pipe 43 away from the cooling pipe 42 is connected to an external drain structure.

[0033] During use, when the injection mold needs to be cooled, cooling water is provided to the liquid inlet pipe 44 through the external liquid inlet structure. At this time, the cooling water enters the cooling pipe 42 through the inner cavity of the liquid inlet pipe 44, and flows from the inner cavity of the liquid discharge pipe 43 to the external liquid discharge structure. During this period, the heat on the fixed mold 3 is taken away by the heat exchange principle. At the same time, the heat dissipation fins 41 arranged in a linear array dissipate the heat on the fixed mold 3, thereby facilitating rapid heat dissipation of the fixed mold 3, and then facilitating rapid demolding of the injection-molded vehicle bumper.

[0034] Example 2

[0035] Reference Figure 1-4 , which is the second embodiment of the utility model. This embodiment is different from the first embodiment in that: the inner cavity side wall of the carrier frame 2 is provided with first waist-shaped holes 21, and the first waist-shaped holes 21 are arranged in a circular array.

[0036] The ejection structure 5 includes a hydraulic push rod 51, the bottom end of which is fixedly connected to the bottom wall of the inner cavity of the supporting frame 2, a hollow disk 52 is fixedly installed on the top of the hydraulic push rod 51, and a hollow rod 53 is fixedly installed on the top of the hollow disk 52. The hollow rods 53 are arranged in a circular array, and the outer surface of the hollow rods 53 is movably connected to the inner cavity of the through hole 31.

[0037] Through holes 521 are formed on the inner wall of the hollow disk 52 , and the through holes 521 are arranged in a circular array.

[0038] A second waist-shaped hole 531 is formed in the inner wall of the hollow rod 53 .

[0039] During use, by starting the hydraulic push rod 51 fixed on the bottom wall of the inner cavity of the supporting frame 2, the hydraulic push rod 51 drives the hollow disk 52 fixed on the hydraulic push rod 51 to move, and the hollow disk 52 drives the hollow rod 53 to move in the inner cavity of the through hole 31, and penetrates the through hole 31 to eject the injection-molded vehicle bumper in the fixed mold 3. At the same time, the outside air enters the inner cavity of the supporting frame 2 through the inner cavity of the first waist-shaped hole 21, and then enters the inner cavity of the fixed mold 3 through the inner cavity of the through hole 521, the cavity of the hollow disk 52, the cavity of the hollow rod 53 and the inner cavity of the second waist-shaped hole 531, or through the cavity of the hollow rod 53 and the inner cavity of the second waist-shaped hole 531, to ensure that the external pressure is balanced with the pressure in the fixed mold 3, thereby facilitating the rapid ejection of the injection-molded vehicle bumper.

[0040] The remaining structures are the same as those of Example 1.

[0041] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. An injection mold for a vehicle bumper, comprising a base (1), characterized in that: A bearing frame (2) is fixedly mounted on the top of the base (1), a fixed mold (3) is arranged on the top of the bearing frame (2), a cooling structure (4) is arranged on the fixed mold (3), an ejection structure (5) is arranged on the bearing frame (2), the ejection structure (5) is movably connected to the inside of the fixed mold (3), and the ejection structure (5) is fixedly connected to the bottom wall of the inner cavity of the bearing frame (2); The inner cavity side wall of the carrying frame (2) is provided with first waist-shaped holes (21), and the first waist-shaped holes (21) are arranged in a circular array; The ejection structure (5) comprises a hydraulic push rod (51), the bottom end of the hydraulic push rod (51) is fixedly connected to the bottom wall of the inner cavity of the bearing frame (2), the top end of the hydraulic push rod (51) is fixedly mounted with a hollow disk (52), the top end of the hollow disk (52) is fixedly mounted with a hollow rod (53), the hollow rods (53) are arranged in a circular array, and the outer surface of the hollow rod (53) is movably connected to the inner cavity of the through hole (31); The inner cavity wall of the hollow disk (52) is provided with through holes (521), and the through holes (521) are arranged in a circular array; The inner cavity wall of the hollow rod (53) is provided with a second waist-shaped hole (531).

2. The injection mold for a vehicle bumper according to claim 1, characterized in that: A through hole (31) is provided on the bottom wall of the mold cavity of the fixed mold (3), the inner wall of the through hole (31) is movably connected to the ejection structure (5), and positioning columns (32) are fixedly installed at the four corners of the top end of the fixed mold (3).

3. The injection mold for a vehicle bumper according to claim 1, characterized in that: The cooling structure (4) comprises heat dissipation fins (41), the heat dissipation fins (41) are fixedly connected to the outer surface of the fixed mold (3), and the heat dissipation fins (41) are arranged in a linear array.

4. The injection mold for a vehicle bumper according to claim 1, characterized in that: The cooling structure (4) further comprises a cooling pipe (42), the top end of the cooling pipe (42) being fixedly connected to the bottom end of the fixed mold (3), one end of the cooling pipe (42) being fixedly mounted with a liquid inlet pipe (44), and one end of the liquid inlet pipe (44) away from the cooling pipe (42) being connected to an external liquid inlet structure; A drain pipe (43) is fixedly mounted on the other end of the cooling pipe (42), and one end of the drain pipe (43) away from the cooling pipe (42) is connected to an external drain structure.

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