Injection mold convenient to demold and used for automobile ABC column

Abstract

The utility model is applicable to the technical field of automobile injection molding, and provides an automobile ABC column injection mold convenient for demolding, which comprises a top cover, an upper mold connected with the top cover, a lower mold arranged at the bottom of the upper mold and a base arranged at the bottom of the lower mold, and an automobile ABC column is arranged between the upper mold and the lower mold; the top cover is of a rectangular structure, a round injection molding channel is formed in the center of the top cover in a penetrating mode, a plurality of sets of connecting bolts in two rows are arranged on the side, close to the upper mold, of the bottom of the top cover, and the two rows of connecting bolts are symmetrically arranged about the axis in the length direction of the top cover and penetrate through the side, close to the upper mold, of the bottom of the top cover. According to the device, the problem that the demolded automobile ABC column finished product cannot meet the normal use requirement due to the fact that the structure is easily damaged in the demolding process of the automobile ABC column finished product is solved, and the effects that the automobile ABC column finished product can be conveniently and rapidly demolded, and the structure of the automobile ABC column cannot be damaged in the demolding process are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile injection molding, and more specifically, to an injection molding mold for automobile ABC columns which is easy to demould. Background Art

[0002] There are three pillars on both sides of the front windshield and the front and rear door glass, namely the front pillar A-pillar, the middle pillar B-pillar, and the rear pillar C-pillar. The A-pillar is between the engine compartment and the cockpit, that is, the pillars on both sides of the front windshield. The B-pillar is between the front and rear seats in the cockpit, that is, the door pillars between the front and rear doors. The C-pillar is on both sides of the rear seats, that is, the pillars on both sides of the rear windshield. The strength of the ABC pillars is an important indicator of automobile safety. When the vehicle rolls over or overturns, the ABC pillars can effectively prevent the cockpit from being squeezed and deformed, and protect the passengers in the car.

[0003] The production of automobile ABC pillars mostly adopts the injection molding method. The molten plastic material is injected into the injection mold with high pressure. After cooling and solidification, automobile ABC pillar products with complex shapes and precise dimensions can be formed.

[0004] Although injection molding has the advantages of fast speed and high efficiency, the molten material is not easy to be released from the mold after cooling. Compared with ordinary injection molded parts, the finished car ABC pillars have more complex structures and higher precision. It is easy to damage the fine structure of the finished car ABC pillars during the demoulding process, resulting in the finished car ABC pillars after demoulding not meeting the requirements of normal use, and ultimately resulting in a lower yield rate of the production of car ABC pillars. Utility Model Content

[0005] In view of the deficiencies in the prior art, the purpose of the utility model is to provide an injection mold for automobile ABC columns that is easy to demould, which is convenient for fast demoulding of finished automobile ABC columns and does not damage the structure of the automobile ABC columns themselves during the demoulding process.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] The invention discloses an injection mold for automobile ABC pillars, which is easy to demould, and comprises a top cover, an upper mold connected to the top cover, a lower mold arranged at the bottom of the upper mold, and a base arranged at the bottom of the lower mold, wherein the automobile ABC pillars are arranged between the upper mold and the lower mold; the top cover is arranged as a rectangular structure, and a circular injection channel is penetrated at the center position thereof, and two rows of a total of several groups of connecting bolts are arranged at the bottom of the top cover close to the upper mold, and the two rows of connecting bolts are symmetrically arranged about the axis in the longitudinal direction of the top cover, and are penetrated at the bottom of the top cover close to the upper mold; the upper mold is arranged as a rectangular structure with a shape matching the top cover, and a circular injection through hole is penetrated at the center position thereof, and several groups of connecting through holes are penetrated at positions corresponding to the positions of the connecting bolts on the upper mold, and circular upper mold positioning through holes are penetrated at the four corners thereof.

[0008] The utility model is further configured as follows: the connecting through hole is configured as a circular structure with a shape adapted to the connecting bolt, and its position corresponds to the connecting bolt, and the position of the injection through hole corresponds to the position of the injection channel.

[0009] The utility model is further configured as follows: an upper mold cavity is arranged at the bottom of the upper mold away from the top cover, the shape of the upper mold cavity is adapted to the shape of the ABC column of the automobile, and protrudes from the bottom of the upper mold; a plurality of groups of upper mold heat dissipation pipes are arranged on the upper mold side wall along its length direction, the upper mold heat dissipation pipes penetrate the upper mold side wall and are inwardly connected with the interior of the upper mold.

[0010] By adopting the above technical solution, after the injection molding is completed, the temperature inside the upper mold can be quickly reduced by introducing air flow or water flow into the heat dissipation pipe of the upper mold.

[0011] The utility model is further configured as follows: the lower mold is configured as a rectangular structure that is adapted to the shape of the upper mold, and lower mold positioning through holes are opened through the four corners thereof; the lower mold side wall is provided with a lower mold connecting piece that can be connected to the upper mold side wall, and a lower mold cavity is provided on the top of the side close to the upper mold; the lower mold positioning through hole is configured as a circular structure that is adapted to the shape of the upper mold positioning through hole, and the position corresponds to the upper mold positioning through hole; the lower mold cavity is recessed at the top of the lower mold, and its shape is adapted to the shape of the upper mold cavity; and an automobile ABC column is provided between the lower mold cavity and the upper mold cavity.

[0012] The utility model is further configured as follows: a plurality of groups of lower mold heat dissipation pipes are arranged on the side wall of the lower mold along its length direction, the lower mold heat dissipation pipes are arranged through the side wall of the upper mold, and are inwardly connected with the interior of the upper mold; a first mold ejector and a second mold ejector are arranged on the top of the lower mold close to the upper mold, the first mold ejector and the second mold ejector are arranged along the length direction of the lower mold, and are inwardly abutted against the lower mold cavity.

[0013] By adopting the above technical solution, after the injection molding is completed, the temperature inside the lower mold can be quickly reduced by introducing air or water into the heat dissipation pipe of the lower mold. After the automobile ABC column is cooled and formed, pressure can be applied to the inside of the mold through the first mold ejector and the second mold ejector to separate the automobile ABC column from the mold.

[0014] The utility model is further configured as follows: the base is configured as a rectangular structure whose shape is adapted to the upper mold and the lower mold, and positioning columns are arranged at the four corners of its top; a buffer pad of a rectangular structure is arranged on the top of the base close to the lower mold, and a plurality of groups of main support rods and auxiliary support rods are arranged on the top of the buffer pad along the vertical direction; wherein, the positioning column is configured as a cylindrical structure, the top of the main support rod is in contact with the bottom of the lower mold, and the top of the auxiliary support rod is inserted into the lower mold.

[0015] In summary, the present application includes at least one of the following beneficial technical effects:

[0016] 1. By introducing air or water flow into the heat dissipation pipe of the upper mold, the temperature inside the upper mold can be quickly reduced, so that the ABC column of the automobile can be quickly and smoothly separated from the upper mold cavity, ensuring the demoulding effect of the ABC column of the automobile.

[0017] 2. By introducing airflow or water flow into the lower mold heat dissipation pipe, the temperature inside the lower mold can be quickly reduced, so that the ABC pillars of the automobile can be quickly and smoothly separated from the lower mold cavity, thereby ensuring the demoulding effect of the ABC pillars of the automobile.

[0018] 3. By applying pressure to the inside of the mold through the first mold ejector and the second mold ejector, the automobile ABC pillar and the mold can be quickly separated without damaging the internal structure of the automobile ABC pillar, which is convenient for demoulding and can also avoid damage to the automobile ABC pillar during the demoulding process, thereby improving the qualified rate of the finished automobile ABC pillar. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The utility model is a structural schematic diagram of an injection mold for automobile ABC columns which is easy to demould.

[0020] Figure 2 It is a schematic diagram of the structure of the top cover in the utility model.

[0021] Figure 3 It is a structural schematic diagram of the upper mold in the utility model.

[0022] Figure 4 It is a structural schematic diagram of the lower mold in the utility model.

[0023] Figure 5 It is a schematic diagram of the explosion structure of the lower mold in the utility model.

[0024] Figure 6 It is a structural schematic diagram of the base in the utility model.

[0025] Description of reference numerals: 1, top cover; 11, injection channel; 12, connecting bolt;

[0026] 2. Upper mold; 21. Connecting through hole; 22. Upper mold positioning through hole; 23. Injection through hole; 24. Upper mold cavity; 25. Upper mold heat dissipation pipe;

[0027] 3. Lower mold; 31. Lower mold positioning through hole; 32. Lower mold cavity; 33. First mold ejector; 34. Second mold ejector; 35. Lower mold heat dissipation pipe; 36. Lower mold connector;

[0028] 4. Base; 41. Positioning column; 42. Main support rod; 43. Secondary support rod; 44. Buffer pad;

[0029] 5. Car ABC pillars. DETAILED DESCRIPTION

[0030] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0031] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0032] For example, see Figure 1-6 , the utility model provides the following technical solutions:

[0033] Specifically refers to an injection mold for automobile ABC column that is easy to demould, see Figure 1 , including a top cover 1, an upper mold 2, a lower mold 3, a base 4 and an automobile ABC pillar 5, wherein the upper mold 2 is arranged at the bottom of the top cover 1, the lower mold 3 is arranged at the bottom of the upper mold 2, and the base 4 is arranged at the bottom of the lower mold 3. The top cover 1 is connected with the upper mold 2, the base 4 is connected with the lower mold 3, and after the upper mold 2 and the lower mold 3 are butt-jointed, molten plastic is injected into the interior thereof, and after cooling and molding, the automobile ABC pillar 5 can be formed on the upper mold 2 and the lower mold 3.

[0034] See also Figure 2 The top cover 1 is set to a rectangular structure, and a circular injection channel 11 is opened at its center, and the molten plastic can be injected into the mold through the injection channel 11. Two rows of connecting bolts 12 are arranged on the bottom of the top cover 1 near the upper mold 2, and a total of several groups of connecting bolts 12 are arranged. The two rows of connecting bolts 12 are symmetrically arranged about the longitudinal axis of the top cover 1 and are arranged through the bottom of the top cover 1 near the upper mold 2. The top cover 1 and the upper mold 2 can be connected by the connecting bolts 12.

[0035] See also Figure 3 The upper mold 2 is set to a rectangular structure whose shape matches the top cover 1, and a circular injection hole 23 is opened through its center. The position of the injection hole 23 corresponds to the position of the injection channel 11. The top of the injection hole 23 is connected to the injection channel 11, and the other end is connected to the upper mold cavity 24. The molten plastic inside the injection channel 11 can flow into the upper mold cavity 24 through the injection hole 23 to complete the injection. A plurality of groups of connecting holes 21 are opened through the upper mold 2 at the position corresponding to the position of the connecting bolt 12. The connecting holes 21 are set to a circular structure with a shape that matches the connecting bolt 12, and their positions correspond to the connecting bolt 12. The connection between the connecting holes 21 and the connecting bolt 12 can be achieved by docking the connecting holes 21 with the connecting bolts 12.

[0036] See also Figure 3 , circular upper mold positioning through holes 22 are provided at the four corners of the upper mold 2. The upper mold positioning through holes 22 can realize the docking of the upper mold 2 and the lower mold 3, ensure the docking of the upper mold cavity 24 and the lower mold cavity 32, and form a cavity for the injection molding of the automobile ABC pillar 5 inside the two. The upper mold cavity 24 is arranged at the bottom of the upper mold 2 away from the top cover 1. The shape of the upper mold cavity 24 is adapted to the shape of the automobile ABC pillar 5 and protrudes from the bottom of the upper mold 2. Several groups of upper mold heat dissipation pipes 25 are arranged on the side wall of the upper mold 2 along its length direction. The upper mold heat dissipation pipes 25 penetrate the side wall of the upper mold 2 and are connected inwardly with the interior of the upper mold 2. After the injection molding is completed, the temperature inside the upper mold 2 can be quickly reduced by introducing airflow or water flow into the interior of the upper mold heat dissipation pipes 25, so that the automobile ABC pillar 5 and the upper mold cavity 24 can be quickly and smoothly separated, and the demoulding effect of the automobile ABC pillar 5 can be ensured.

[0037] See also Figure 4-5 , the lower die 3 is set to a rectangular structure that matches the shape of the upper die 2, and the lower die positioning through holes 31 are opened at the four corners. The lower die positioning through hole 31 is set to a circular structure that matches the shape of the upper die positioning through hole 22, and the position corresponds to the upper die positioning through hole 22. The positioning connection between the lower die positioning through hole 31 and the upper die positioning through hole 22 can achieve accurate positioning of the upper die 2 and the lower die 3. The side wall of the lower die 3 is provided with a lower die connector 36 that can be connected to the side wall of the upper die 2. After the positioning of the upper die 2 and the lower die 3 is completed, the connection between the lower die connector 36 and the side wall of the upper die 2 can further ensure the reliability of the connection between the upper die 2 and the lower die. A lower die cavity 32 is provided on the top of the lower die 3 close to the upper die 2. The lower die cavity 32 is recessed in the top of the lower die 3, and its shape matches the shape of the upper die cavity 24. After the upper mold 2 and the lower mold 3 are positioned, and the upper mold cavity 24 and the lower mold cavity 32 are connected, the cavity formed inside the two is consistent with the shape of the automobile ABC pillar 5, which means that the cavity is the cavity for injection molding of the automobile ABC pillar 5. The molten plastic can form the automobile ABC pillar 5 after cooling inside the cavity.

[0038] See also Figure 4-5 , the side wall of the lower mold 3 is provided with several groups of lower mold heat dissipation pipes 35 along its length direction, and the lower mold heat dissipation pipes 35 are arranged through the side wall of the upper mold 2 and are connected to the interior of the upper mold 2 inwardly. After the injection molding is completed, the temperature inside the lower mold 3 can be quickly reduced by introducing airflow or water flow into the lower mold heat dissipation pipes 35, so that the automobile ABC pillar 5 and the lower mold cavity 32 can be quickly and smoothly separated, and the demoulding effect of the automobile ABC pillar 5 can be ensured. The first mold ejector 33 and the second mold ejector 34 are arranged on the top of the lower mold 3 near the upper mold 2. The first mold ejector 33 and the second mold ejector 34 are arranged along the length direction of the lower mold 3 and abut against the lower mold cavity 32 inwardly. After the automobile ABC pillar 5 is cooled and formed, pressure can be applied to the inside of the mold by the first mold ejector 33 and the second mold ejector 34, so that the automobile ABC pillar 5 can be quickly separated from the mold without damaging the internal structure of the automobile ABC pillar 5, which is convenient for demoulding, and can also avoid damage to the automobile ABC pillar 5 during the demoulding process, thereby improving the qualified rate of the finished automobile ABC pillar 5.

[0039] See also Figure 6 The base 4 is configured as a rectangular structure that matches the upper mold 2 and the lower mold 3, and positioning columns 41 are provided at the four corners of the top thereof. The positioning columns 41 are configured as cylindrical structures, and their shapes match the upper mold positioning through holes 22 and the lower mold positioning through holes 31, respectively. The positioning columns 41 pass through the lower mold positioning through holes 31 and the upper mold positioning through holes 22 in sequence upward to achieve the connection between the base 4 and the upper mold 2 and the lower mold 3. A rectangular buffer pad 44 is provided on the top of the base 4 near the lower mold 3, and a plurality of groups of main support rods 42 and auxiliary support rods 43 are provided on the top of the buffer pad 44 in the vertical direction. The top of the main support rod 42 abuts against the bottom of the lower mold 3, and the top of the auxiliary support rod 43 is inserted into the lower mold 3. The main support rod 42 and the auxiliary support rod 43 can transfer the pressure on the lower mold 3 during the injection molding process to the buffer pad 44, which is buffered by the buffer pad 44.

[0040] Obviously, the embodiments described above are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

Claims

1. An injection mold for automobile ABC columns that is easy to demould, characterized in that: It comprises a top cover (1), an upper mold (2) connected to the top cover (1), a lower mold (3) arranged at the bottom of the upper mold (2), and a base (4) arranged at the bottom of the lower mold (3); an automobile ABC column (5) is arranged between the upper mold (2) and the lower mold (3); The top cover (1) is arranged in a rectangular structure, and a circular injection channel (11) is provided through the center thereof; two rows of connecting bolts (12) are arranged on the bottom of the top cover (1) close to the upper mold (2), and a total of several groups of connecting bolts (12) are arranged; the two rows of connecting bolts (12) are symmetrically arranged about the longitudinal axis of the top cover (1), and are arranged through the bottom of the top cover (1) close to the upper mold (2); The upper mold (2) is configured as a rectangular structure having a shape matching that of the top cover (1), and a circular injection through hole (23) is provided at its center, a plurality of groups of connecting through holes (21) are provided at positions corresponding to the positions of the connecting bolts (12) on the upper mold (2), and circular upper mold positioning through holes (22) are provided at its four corners; The connecting through hole (21) is configured as a circular structure having a shape adapted to the connecting bolt (12), and its position corresponds to the connecting bolt (12); the position of the injection through hole (23) corresponds to the position of the injection channel (11).

2. The easy-to-demold injection mold for automobile ABC columns according to claim 1, characterized in that: An upper mold cavity (24) is provided at the bottom of the upper mold (2) away from the top cover (1); the shape of the upper mold cavity (24) is adapted to the shape of the automobile ABC column (5) and is arranged to protrude from the bottom of the upper mold (2).

3. The easy-to-demold injection mold for automobile ABC columns according to claim 2, characterized in that: The side wall of the upper mold (2) is provided with a plurality of groups of upper mold heat dissipation pipes (25) along its length direction. The upper mold heat dissipation pipes (25) penetrate the side wall of the upper mold (2) and are inwardly connected with the interior of the upper mold (2).

4. The easy-to-demold injection mold for automobile ABC columns according to claim 3, characterized in that: The lower mold (3) is configured as a rectangular structure that matches the shape of the upper mold (2), and lower mold positioning through holes (31) are provided at its four corners; a lower mold connecting piece (36) that can be connected to the side wall of the upper mold (2) is provided on the side wall of the lower mold (3), and a lower mold cavity (32) is provided on the top of the side close to the upper mold (2); The lower die positioning through hole (31) is arranged as a circular structure whose shape matches that of the upper die positioning through hole (22) and whose position corresponds to that of the upper die positioning through hole (22); the lower die cavity (32) is recessed at the top of the lower die (3) and whose shape matches that of the upper die cavity (24); and an automobile ABC column (5) is arranged between the lower die cavity (32) and the upper die cavity (24).

5. The easy-to-demold injection mold for automobile ABC columns according to claim 4, characterized in that: The side wall of the lower mold (3) is provided with a plurality of groups of lower mold heat dissipation pipes (35) along its length direction, and the lower mold heat dissipation pipes (35) penetrate the side wall of the upper mold (2) and are inwardly connected with the interior of the upper mold (2); A first mold ejector (33) and a second mold ejector (34) are arranged at the top of the lower mold (3) near the upper mold (2). The first mold ejector (33) and the second mold ejector (34) are arranged along the length direction of the lower mold (3) and abut against the lower mold cavity (32) inwardly.

6. The easy-to-demold injection mold for automobile ABC columns according to claim 1, characterized in that: The base (4) is configured as a rectangular structure whose shape matches that of the upper mold (2) and the lower mold (3), and positioning columns (41) are provided at the four corners of the top thereof; a buffer pad (44) of a rectangular structure is provided on the top of the base (4) near the lower mold (3); and a plurality of groups of main support rods (42) and auxiliary support rods (43) are provided on the top of the buffer pad (44) in a vertical direction; The positioning column (41) is configured as a cylindrical structure, the top of the main support rod (42) abuts against the bottom of the lower mold (3), and the top of the auxiliary support rod (43) is inserted into the interior of the lower mold (3).

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