Injection mold for automobile bumper with core-pulling mechanism

Abstract

This application relates to an injection mold for an automotive bumper with a core-pulling mechanism. It includes, from top to bottom, an upper fixed plate, an upper mold base, a lower mold base, a connecting seat, and a lower fixed plate. A female mold core is located on the side of the upper mold base near the lower mold base, and a female mold core is located on the side of the lower mold base near the upper mold base. The female mold core and the female mold core form a mold cavity. A sprue is provided on the upper fixed plate, and a runner is provided on the inner wall of the sprue, connecting to the female mold core. Several side holes are provided in the female mold core. The application also includes several core-pulling assemblies, each consisting of a core-pulling block and a core-pulling rod. The core-pulling blocks are slidably disposed within the side holes, and the core-pulling rods are located at the ends of the core-pulling blocks away from the female mold core. A driving component is also included, which drives the core-pulling rods to slide, thereby causing the core-pulling blocks to slide away from the female mold core, completing the core-pulling process. This application offers advantages such as convenient mold demolding, reduced mold costs, and one-time molding of the product's side holes.

Description

Technical Field

[0001] This application relates to the field of automotive mold technology, and in particular to an automotive bumper injection mold with a core-pulling mechanism. Background Technology

[0002] Automotive molds are specialized tools used in the mass production of automotive parts during the automobile manufacturing process. Their design and manufacturing level directly affects the precision, quality, and production efficiency of automotive parts. As a core process equipment in the modern automotive industry, molds are widely used in the molding and processing of body panels, interior parts, engine components, and functional parts. Automotive bumpers are primarily formed using injection molds.

[0003] Common car bumpers often have side holes. Conventional injection molding of side holes is quite difficult and not easy to demold. The side hole precision is also low, so after the mold is formed, secondary processing is required to achieve the side hole forming of the car bumper. Summary of the Invention

[0004] To facilitate mold release and allow for one-time molding of the product's side holes, this application provides an injection mold for an automotive bumper with a core-pulling mechanism.

[0005] This application provides an injection mold for an automotive bumper with a core-pulling mechanism, employing the following technical solution:

[0006] An injection mold for an automotive bumper with a core-pulling mechanism includes, from top to bottom, an upper fixed plate, an upper mold base, a lower mold base, a connecting base, and a lower fixed plate. The connecting base has guide pillars circumferentially arranged, and the upper mold base has guide grooves for the guide pillars to slide along the length of the guide grooves. A female mold core is provided on the side of the upper mold base near the lower mold base, and a female mold core is provided on the side of the lower mold base near the upper mold base. The female mold core and the female mold core form a mold cavity. A sprue is provided on the upper fixed plate. The inner wall of the sprue is provided with a runner pipe, which is connected to the female mold core. The runner pipe supplies injection material to the mold cavity. The female mold core is provided with several side holes and also includes several core-pulling assemblies. The core-pulling assembly includes a core-pulling block and a core-pulling rod. The core-pulling blocks are slidably disposed in the side holes one by one. The core-pulling rod is disposed at the end of the core-pulling block away from the female mold core. The assembly also includes a driving component, which drives the core-pulling rod to slide, thereby causing the core-pulling block to slide away from the female mold core, and the core-pulling is completed.

[0007] By adopting the above technical solution, when the mold needs core pulling, the mold is installed on the injection molding machine. When the upper mold base and the lower mold base are closed, the female mold core and the male mold core form a mold cavity. The material enters the mold cavity through the sprue and runner. The male mold core has a side hole. To facilitate demolding, a core pulling assembly is set. The core pulling assembly consists of a core pulling block and a core pulling rod. The core pulling block is slidably connected in the side hole. After the material is cooled and formed, the driving component drives the core pulling rod to slide, thereby driving the core pulling block to slide away from the male mold core. The core pulling is completed. At this time, after the mold is opened, the product forms a side hole, which facilitates the demolding of the mold. The product side hole is formed in one step.

[0008] Optionally, the side holes are arranged in parallel, and a fixing block is provided at the end of the core-pulling rod away from the core-pulling block. The fixing block connects several core-pulling blocks. The driving component is a hydraulic cylinder, which is mounted on a connecting seat. The output end of the hydraulic cylinder is fixed on the fixing block, and the hydraulic cylinder drives several core-pulling blocks to slide.

[0009] By adopting the above technical solution, several sets of core-pulling components are driven by a hydraulic cylinder to achieve core pulling, resulting in lower mold costs and a simplified core-pulling structure.

[0010] Optionally, the connecting seat has protrusions on both sides, the protrusion cylinder is mounted on the protrusion, and the lower fixing plate has a through groove, in which the protrusion cylinder is located.

[0011] By adopting the above technical solution, the protrusion facilitates the installation and positioning of the hydraulic cylinder, and the through groove ensures that the installation of the lower fixing plate will not affect the hydraulic cylinder, making the hydraulic cylinder easy to install.

[0012] Optionally, a plurality of flow channels are provided, and all of the plurality of flow channels are connected to the master mold core.

[0013] By adopting the above technical solutions, several flow channels enable the injection material to fill the mold cavity more quickly during injection, resulting in faster mold forming.

[0014] Optionally, the connecting seat is provided with a connecting block, and the connecting block has a sliding groove on both sides. The lower mold base is provided with four sliding blocks in the circumferential direction. The sliding blocks are slidably connected to the sliding grooves, and the sliding of the connecting blocks drives the lower mold base to slide.

[0015] By adopting the above technical solution, the lower mold base is easy to install through the connecting block and the sliding block, thus improving the mold installation efficiency.

[0016] In summary, this application includes at least one of the following beneficial technical effects:

[0017] 1. When the mold needs to pull the core, after the material has cooled and solidified, the driving component drives the core-pulling block to slide away from the sub-mold core, and the core pulling is completed. The mold is easy to demold, and the side hole of the product is formed in one step.

[0018] 2. Multiple core-pulling components are driven by a single hydraulic cylinder, resulting in lower mold costs;

[0019] 3. Multiple flow channels enable faster mold forming. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of an injection mold for an automobile bumper with a core-pulling mechanism, as shown in the embodiment.

[0021] Figure 2 This is a schematic diagram of the sub-mold core in an embodiment.

[0022] Figure 3 This is a schematic diagram of the upper mold base in an embodiment.

[0023] Figure 4 This is a schematic diagram of the sub-mold core and flow channel pipeline in an embodiment.

[0024] Figure 5 This is a schematic diagram of the core-pulling assembly in an embodiment.

[0025] Figure 6 This is a structural schematic diagram of an automotive bumper injection mold with a core-pulling mechanism from another perspective, as shown in the embodiment.

[0026] Explanation of reference numerals in the attached drawings: 1. Upper fixed plate; 2. Upper mold base; 3. Lower mold base; 4. Connecting seat; 5. Lower fixed plate; 61. Guide pillar; 62. Guide groove; 63. Female mold core; 64. Sub-mold core; 65. Sprue; 66. Runner; 67. Side hole; 7. Core pulling assembly; 71. Core pulling block; 72. Core pulling rod; 8. Driving component; 81. Hydraulic cylinder; 91. Fixed block; 92. Protrusion; 93. Through groove; 94. Connecting block; 95. Sliding groove; 96. Sliding block; 97. Through hole. Detailed Implementation

[0027] The present application will be further described in detail below with reference to the accompanying drawings and embodiments.

[0028] This application discloses an injection mold for an automobile bumper with a core-pulling mechanism. (Refer to...) Figure 1 , Figure 2 , Figure 3The automotive bumper injection mold with a core-pulling mechanism includes, from top to bottom, an upper fixed plate 1, an upper mold base 2, a lower mold base 3, a connecting seat 4, and a lower fixed plate 5. A guide post 61 is circumferentially fixed to the connecting seat 4. A guide groove 62 is provided on the upper mold base 2 for the guide post 61 to slide along the length of the guide groove 62. A connecting block 94 is fixed to the connecting seat 4. Sliding grooves 95 are provided on both sides of the connecting block 94. Four sliding blocks 96 are circumferentially fixed to the lower mold base 3. The sliding blocks 96 are slidably connected to the sliding grooves 95. The sliding of the connecting blocks 94 drives the lower mold base 3 to slide. A through hole 97 is provided on the side wall of the connecting block 94, connecting the lower mold base 3. Bolts (not shown in the figure) pass through the through holes 97 and are threadedly connected to the connecting block 94 and the lower mold base 3.

[0029] Reference Figure 1 , Figure 3 , Figure 4 A female mold core 63 is fixed on the side of the upper mold base 2 near the lower mold base 3, and a male mold core 64 is fixed on the side of the lower mold base 3 near the upper mold base 2. The female mold core 63 and the male mold core 64 form a mold cavity. A sprue 65 is provided on the upper fixed plate 1, and a runner 66 is provided on the inner wall of the sprue 65. Several runners 66 are provided, and all runners 66 are connected to the female mold core 63. The runners 66 supply injection material to be sprayed into the mold cavity.

[0030] Reference Figure 2 , Figure 5 The automotive bumper injection mold with a core-pulling mechanism also includes several core-pulling components 7. Each core-pulling component 7 includes a core-pulling block 71 and a core-pulling rod 72. Several side holes 67 are provided inside the mold core 64. The side holes 67 are arranged in parallel, and the core-pulling blocks 71 are slidably disposed in the side holes 67 one by one. The core-pulling rod 72 is fixed to the end of the core-pulling block 71 away from the mold core 64.

[0031] Reference Figure 2 , Figure 5 , Figure 6 The end of the core-pulling rod 72 away from the core-pulling block 71 is fixed with a fixing block 91. The fixing block 91 connects several core-pulling blocks 71. The car bumper injection mold with the core-pulling mechanism also includes a driving component 8, which is a hydraulic cylinder 81. The connecting seat 4 has protrusions 92 fixed on both sides. The hydraulic cylinder 81 is fixed on the protrusions 92. The output end of the hydraulic cylinder 81 is fixed on the fixing block 91. A through groove 93 is opened on the fixing plate. The protrusions 92 and the hydraulic cylinder 81 are located in the through groove 93. The driving component 8 drives several core-pulling rods 72 to slide, thereby driving the core-pulling block 71 to slide away from the sub-mold core 64, and the core-pulling is completed.

[0032] The implementation principle of an injection mold for an automobile bumper with a core-pulling mechanism according to an embodiment of this application is as follows: When the mold needs to pull the core, the mold is installed on the injection molding machine, the hydraulic cylinder 81 is fixed on the protrusion 92, and when the upper mold base 2 and the lower mold base 3 are closed, the female mold core 63 and the female mold core 64 form a mold cavity. The material enters the mold cavity through the sprue 65 and the runner. The core-pulling block 71 is slidably connected to the side hole 67. After the material has been fully cooled and formed, the hydraulic cylinder 81 drives several sets of core-pulling rods 72 to slide simultaneously, thereby driving several core-pulling blocks 71 to slide away from the female mold core 64. Several side holes 67 are pulled out simultaneously. The mold is easy to demold, the mold cost is reduced, and the product side holes 67 are formed in one step.

[0033] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An injection mold for an automobile bumper with a core-pulling mechanism, comprising, from top to bottom, an upper fixing plate (1), an upper mold base (2), a lower mold base (3), a connecting seat (4), and a lower fixing plate (5), characterized in that: The connecting seat (4) is provided with a guide post (61) circumferentially. The upper mold base (2) is provided with a guide groove (62) for the guide post (61) to slide. The guide post (61) slides along the length of the guide groove (62). The upper mold base (2) is provided with a female mold core (63) on the side near the lower mold base (3). The lower mold base (3) is provided with a female mold core (64) on the side near the upper mold base (2). The female mold core (63) and the female mold core (64) form a mold cavity. The upper fixing plate (1) is provided with a sprue (65). The inner wall of the sprue (65) is provided with a runner pipe (66). The mother mold core (63) is connected, and the flow channel (66) supplies injection material to the mold cavity. The daughter mold core (64) has several side holes (67) and also includes several core-pulling assemblies (7). The core-pulling assembly (7) includes a core-pulling block (71) and a core-pulling rod (72). The core-pulling blocks (71) are slidably disposed in the side holes (67) one by one. The core-pulling rod (72) is disposed at the end of the core-pulling block (71) away from the daughter mold core (64). It also includes a driving member (8). The driving member (8) drives the core-pulling rod (72) to slide, thereby driving the core-pulling block (71) to slide away from the daughter mold core (64), and the core-pulling is completed.

2. The automotive bumper injection mold with a core-pulling mechanism according to claim 1, characterized in that: The side holes (67) are arranged in parallel. A fixing block (91) is provided at the end of the core-pulling rod (72) away from the core-pulling block (71). The fixing block (91) connects several core-pulling blocks (71). The driving component (8) is a hydraulic cylinder (81). The hydraulic cylinder (81) is set on the connecting seat (4). The output end of the hydraulic cylinder (81) is fixed on the fixing block (91). The hydraulic cylinder (81) drives several core-pulling blocks (71) to slide.

3. The automotive bumper injection mold with a core-pulling mechanism according to claim 2, characterized in that: The connecting seat (4) has protrusions (92) on both sides, and the protrusion (92) cylinder (81) is set on the protrusion (92). The lower fixing plate (5) has a through groove (93), and the protrusion (92) cylinder (81) is located in the through groove (93).

4. The automotive bumper injection mold with a core-pulling mechanism according to claim 1, characterized in that: The flow channel (66) is provided in a plurality of ways, and all of the flow channel (66) are connected to the mother mold core (63).

5. The automotive bumper injection mold with a core-pulling mechanism according to claim 1, characterized in that: The connecting seat (4) is provided with a connecting block (94), and the connecting block (94) has a sliding groove (95) on both sides. The lower mold base (3) is provided with four sliding blocks (96) in the circumferential direction. The sliding blocks (96) are slidably connected to the sliding groove (95). The sliding of the connecting block (94) drives the lower mold base (3) to slide.

Images