A multi-part, large-angle automotive hollow plastic pipe mold

Abstract

The present invention discloses a multi-part large-angle automobile hollow plastic tube mold, comprising: a fixed mold mechanism and a movable mold mechanism, the movable mold mechanism comprises a movable mold base and a movable mold plate, a first molding assembly and a second molding assembly are arranged on the movable mold plate, the first molding assembly and the second molding assembly are arranged in parallel, the first molding assembly comprises a first base, a first rotating core pulling block, a first movable mold core, a first driving device, a first side core pulling block and a second driving device, the second molding assembly comprises a second base, a second rotating core pulling block, a second movable mold core, a third driving device and a second side core pulling block, a through hole is arranged on the second side core pulling block, and an inclined guide column whose position corresponds to the through hole is arranged on the fixed mold mechanism. Compared with the prior art, the present invention molds two different large-angle hollow plastic tube parts at one time, which is convenient for post-processing and the parts are demolded smoothly.

Description

Technical Field

[0001] The invention belongs to the field of injection molding molds, and in particular relates to a multi-part large-angle automobile hollow plastic pipe mold. Background Art

[0002] Injection molding is a processing method used in mass production of certain parts with complex shapes. Specifically, it refers to injecting heated and molten materials into the mold cavity by high pressure, and obtaining a molded product after cooling and solidification. The injection mold is mainly composed of a movable mold and a fixed mold. The movable mold is installed on the movable mold plate of the injection molding machine, and the fixed mold is installed on the fixed mold plate of the injection molding machine. During injection molding, the movable mold and the fixed mold are closed to form a pouring system and a cavity. When the mold is opened, the movable mold and the fixed mold are separated and then the plastic product is pushed out through the ejection mechanism to remove the plastic product.

[0003] The existing hollow plastic tubes are one part per mold during injection molding. Two parts need two sets of molds to be produced separately, and then post-processing is performed, which wastes mold costs, equipment costs, storage costs and personnel costs. However, when processing two large-angle hollow plastic tubes with arc-shaped curved sections with one mold, it is inconvenient to demold the parts. Summary of the invention

[0004] The purpose of the present invention is to provide a multi-part large-angle automobile hollow plastic tube mold, which can form two different large-angle hollow plastic tube parts at one time, facilitate subsequent processing, and the parts can be demoulded smoothly.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a multi-part large-angle automobile hollow plastic tube mold, comprising: a fixed mold mechanism and a movable mold mechanism, the movable mold mechanism comprises a movable mold base and a movable mold plate, a first molding assembly and a second molding assembly are arranged on the movable mold plate, the first molding assembly and the second molding assembly are arranged in parallel, the first molding assembly comprises a first base, a first rotating core pulling block, a first movable mold core, a first driving device, a first side core pulling block and a second driving device, the first base is fixedly installed in the movable mold plate, the first rotating core pulling block is rotatably installed on the first base, the first gear arranged at the bottom of the first rotating core pulling block is meshed with the first rack connected to the output end of the first driving device, and the first movable mold core is fixedly installed in the first side core pulling block. On a base, the first rotating core pulling block is slidably connected to the first slide groove on the first movable mold core, the first side core pulling block is fixedly installed at the output end of the second driving device, the second molding assembly includes a second base, a second rotating core pulling block, a second movable mold core, a third driving device and a second side core pulling block, the second base is fixedly installed in the movable mold plate, the second rotating core pulling block is rotatably installed on the second base, the second gear arranged at the bottom of the second rotating core pulling block is meshed with the second rack connected to the output end of the third driving device, the second movable mold core is fixedly installed on the second base, the second rotating core pulling block is slidably connected to the second slide groove on the second movable mold core, a through hole is arranged on the second side core pulling block, and an inclined guide column whose position corresponds to the through hole is arranged on the fixed mold mechanism.

[0006] As a further description of the above technical solution:

[0007] The top surface of the first base is an inclined surface, and the first rotating core-pulling block is slidably connected to the top surface.

[0008] As a further description of the above technical solution:

[0009] An arc-shaped through hole is arranged on the top surface, and a convex block is arranged on the bottom surface of the first rotating core-pulling block, and the convex block is slidably connected in the arc-shaped through hole.

[0010] As a further description of the above technical solution:

[0011] A cushion block is arranged at one end of the first slide groove.

[0012] As a further description of the above technical solution:

[0013] A locking module is arranged on the fixed die mechanism, one end of the locking module is fixedly mounted on the fixed die mechanism, and the other end opposite thereto is fixedly mounted on the movable die plate.

[0014] As a further description of the above technical solution:

[0015] A top block is arranged on the push plate of the movable mold mechanism. The top block is in a "Z" shape. One end of the top block is fixedly mounted on the push plate, and the other end is against the back of the movable mold plate.

[0016] As a further description of the above technical solution:

[0017] One end of the lock module is against the step surface of the top block.

[0018] As a further description of the above technical solution:

[0019] The first driving device is a hydraulic cylinder.

[0020] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0021] 1. In the present invention, during injection molding, the fixed mold mechanism and the movable mold mechanism are molded together. After molding, the first movable mold core and the second movable mold core are respectively provided with products to be demolded (two in total). Taking the demolding of the product on the first movable mold core as an example, when the product thereon is demolded, on the one hand, the first rack at the output end of the first driving device drives the first rotating core block to rotate backward through the first gear, and the first rotating core block is separated from the product (large-angle arc-shaped bending section); on the other hand, the first side core block moves backward under the drive of the second driving device, and the first side core block is separated from the product, which is convenient for product demolding. When the product on the second movable mold core is demolded, the working principle of the second rotating core block is the same as that of the first rotating core block, but because the mold molds two different large-angle hollow plastic tube parts at one time, there is no space to set the driving device for the second side core block, so the movement is realized by the inclined guide column of the fixed mold mechanism. The mold molds two different large-angle hollow plastic tube parts at one time, which is convenient for subsequent processing and the demolding of the parts is smooth.

[0022] 2. In the present invention, a cushion block is provided at one end of the first slide groove on the first movable mold core to assist in limiting the stroke of the first rotating core-pulling block and protect the first movable mold core from being easily damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 A schematic diagram of the structure of a multi-part, large-angle automotive hollow plastic tube mold Figure 1 .

[0025] Figure 2 A schematic diagram of the structure of a multi-part, large-angle automotive hollow plastic tube mold Figure 2 .

[0026] Figure 3The figure is a cross-sectional view of a multi-part, large-angle automotive hollow plastic tube mold.

[0027] Figure 4 The present invention is a structural schematic diagram of the movable mold mechanism in a multi-part, large-angle automobile hollow plastic tube mold.

[0028] Figure 5 This is a cross-sectional schematic diagram of the movable mold mechanism in a multi-part, large-angle automobile hollow plastic tube mold. Legend:

[0029] 1. Fixed mold mechanism; 11. Oblique guide column; 2. Moving mold mechanism; 21. Moving mold seat; 22. Moving mold plate; 23. First molding component; 231. First base; 2311. Top surface; 2312. Arc through hole; 232. First rotating core pulling block; 233. First moving mold core; 2331. First slide groove; 2332. Cushion block; 234. First driving device; 235. First side core pulling block; 236. Second driving device; 237. First gear; 238. First rack; 24. Second molding component; 241. Second base; 242. Second rotating core pulling block; 243. Second moving mold core; 2431. Second slide groove; 244. Third driving device; 245. Second side core pulling block; 246. Second gear; 247. Second rack; 25. Push plate; 3. Lock module; 4. Top block. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0033] In the description of the embodiments of the present invention, it should be noted that the terms "upper", "inner", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are directions or positional relationships in which the inventive product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0034] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] See also Figure 1-5The present invention provides a technical solution: a multi-part large-angle automobile hollow plastic tube mold, comprising: a fixed mold mechanism 1 and a movable mold mechanism 2, the movable mold mechanism 2 comprises a movable mold base 21 and a movable mold plate 22, a first molding assembly 23 and a second molding assembly 24 are arranged on the movable mold plate 22, the first molding assembly 23 and the second molding assembly 24 are arranged in parallel, the first molding assembly 23 comprises a first base 231, a first rotating core pulling block 232, a first movable mold core 233, a first driving device 234, a first side core pulling block 235 and a second driving device 236, the first base 231 is fixedly installed in the movable mold plate 22, the first rotating core pulling block 232 is rotatably installed on the first base 231, a first gear 237 arranged at the bottom of the first rotating core pulling block 232 is meshed with a first rack 238 connected to the output end of the first driving device 234 (the first rotating core pulling block 232 and the first gear 237 are coaxially arranged), the first movable mold core 233 is fixedly installed on the first base 231, the first rotating core pulling block 232 is rotatably installed on the first base 231, and the ... side core pulling block 235 is meshed with the first rack 238 connected to the output end of the first driving device 234. The core block 232 is slidably connected to the first slide groove 2331 on the first movable mold core 233, the first side core pulling block 235 is fixedly installed at the output end of the second driving device 236, the second molding assembly 24 includes a second base 241, a second rotating core pulling block 242, a second movable mold core 243, a third driving device 244 and a second side core pulling block 245, the second base 241 is fixedly installed in the movable mold plate 22, the second rotating core pulling block 242 is rotatably installed on the second base 241, and the second rotating core pulling block 242 is rotatably installed on the second base 241. The second gear 246 arranged at the bottom of the rotating core pulling block 242 is meshed with the second rack 247 connected to the output end of the third driving device 244 (the second rotating core pulling block 242 and the second gear 246 are coaxially arranged), the second movable mold core 243 is fixedly installed on the second base 241, the second rotating core pulling block 242 is slidably connected to the second slide groove 2431 on the second movable mold core 243, a through hole is arranged on the second side core pulling block 245, and an inclined guide column 11 whose position corresponds to the through hole is arranged on the fixed mold mechanism 1.

[0036] The top surface 2311 of the first base 231 is an inclined surface, and the first rotating core-pulling block 232 is slidably connected to the top surface 2311. The inclined surface makes it easier for the first rotating core-pulling block 232 to rotate and retreat more smoothly by its own gravity under the action of the first driving device 234.

[0037] An arc-shaped through hole 2312 is provided on the top surface 2311 , and a protrusion is provided on the bottom surface of the first rotating core-pulling block 232 . The protrusion is slidably connected in the arc-shaped through hole 2312 to assist in limiting the rotation stroke and ensure smooth rotation of the first rotating core-pulling block 232 .

[0038] A cushion block 2332 is disposed at one end of the first slide groove 2331 to assist in limiting the travel of the first rotating core-pulling block 232 and protect the first movable mold core 233 from being easily damaged.

[0039] The fixed mold mechanism 1 is provided with a locking module 3, one end of the locking module 3 is fixedly mounted on the fixed mold mechanism 1, and the other end is fixedly mounted on the movable mold plate 22. The locking module 3 prevents the fixed mold mechanism 1 and the movable mold mechanism 2 from separating, thereby ensuring the molding quality of the product.

[0040] The push plate 25 of the movable mold mechanism 2 is provided with a top block 4, which is in a "Z" shape, with one end of the top block 4 fixedly mounted on the push plate 25 and the other end against the back of the movable mold plate 22. The push plate 25 is used for product demoulding. In order to prevent the push plate 25 from rising (affecting product demoulding) when the first rotating core pulling block 232, the first side core pulling block 235, the second rotating core pulling block 242 and the second side core pulling block 245 are not completely separated from the product, the top block 4 is used to limit the upward movement of the push plate 25.

[0041] One end of the locking module 3 is against the step surface of the top block 4. The top block 4 is installed first, and then the locking module 3 is installed. The top block 4 is against the locking module 3 to facilitate its installation. At the same time, the locking module 3 assists the top block 4 to limit the upward movement of the push plate 25.

[0042] The first driving device 234 is a hydraulic cylinder, and the second driving device 236 and the third driving device 244 are similar.

[0043] Working principle: During injection molding, the fixed mold mechanism and the movable mold mechanism are molded together. After molding, the first movable mold core and the second movable mold core are respectively provided with products to be demolded (two in total). Taking the demolding of the product on the first movable mold core as an example, when the product on it is demolded, on the one hand, the first rack at the output end of the first driving device drives the first rotating core block to rotate backward through the first gear, and the first rotating core block is separated from the product (large-angle arc bending section); on the other hand, the first side core block moves backward under the drive of the second driving device, and the first side core block is separated from the product, which is convenient for product demolding. When the product on the second movable mold core is demolded, the working principle of the second rotating core block is the same as that of the first rotating core block, but because the mold molds two different large-angle hollow plastic tube parts at one time, there is no space to set the driving device for the second side core block, so the movement is realized by the inclined guide column of the fixed mold mechanism. The mold molds two different large-angle hollow plastic tube parts at one time, which is convenient for post-processing and smooth demolding of the parts. A cushion block is arranged at one end of the first slide groove on the first movable mold core to assist in limiting the stroke of the first rotating core-pulling block and protect the first movable mold core from being easily damaged.

[0044] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A multi-part large-angle automobile hollow plastic tube mold, characterized in that: include: A fixed mold mechanism (1) and a movable mold mechanism (2), wherein the movable mold mechanism (2) comprises a movable mold base (21) and a movable mold plate (22), wherein a first molding assembly (23) and a second molding assembly (24) are arranged on the movable mold plate (22), wherein the first molding assembly (23) and the second molding assembly (24) are arranged in parallel, and wherein the first molding assembly (23) comprises a first base (231), a first rotating core pulling block (232), a first movable mold core (233), a first driving device (234), a first side core pulling block (235) and a second driving device (236). The movable mold core (233) is fixedly mounted on the first base (231) in the movable mold plate (22); the first rotating core pulling block (232) is rotatably mounted on the first base (231); a first gear (237) arranged at the bottom of the first rotating core pulling block (232) is meshed with a first rack (238) connected to the output end of the first driving device (234); the first movable mold core (233) is fixedly mounted on the first base (231); the first rotating core pulling block (232) is slidably connected to the first movable mold core (233); The first side core pulling block (235) is fixedly mounted in a first slide groove (2331) on the core (233), and the second side core pulling block (235) is fixedly mounted at the output end of the second driving device (236). The second molding assembly (24) comprises a second base (241), a second rotating core pulling block (242), a second movable mold core (243), a third driving device (244) and a second side core pulling block (245). The second base (241) is fixedly mounted in the movable mold plate (22), and the second rotating core pulling block (242) is rotatably mounted on the second base (241). The second rotating core pulling block (242) is provided with a second gear (246) at the bottom thereof and meshes with a second rack (247) connected to the output end of the third driving device (244); the second movable mold core (243) is fixedly mounted on the second base (241); the second rotating core pulling block (242) is slidably connected in a second slide groove (2431) on the second movable mold core (243); a through hole is provided on the second side core pulling block (245); and an inclined guide column (11) whose position corresponds to the through hole is provided on the fixed mold mechanism (1); The top surface (2311) of the first base (231) is an inclined surface; A cushion block (2332) is provided at one end of the first slide groove (2331); The core-pulling block on the second side is moved by means of the inclined guide column of the fixed mold mechanism, and the mold forms two different large-angle hollow plastic pipe parts at one time.

2. A multi-part large-angle automobile hollow plastic pipe mold according to claim 1, characterized in that: The first rotating core-pulling block (232) is slidably connected to the top surface (2311).

3. A multi-part large-angle automobile hollow plastic tube mold according to claim 2, characterized in that: An arc-shaped through hole (2312) is provided on the top surface (2311), and a convex block is provided on the bottom surface of the first rotating core-pulling block (232), and the convex block is slidably connected in the arc-shaped through hole (2312).

4. A multi-part large-angle automobile hollow plastic tube mold according to claim 1, characterized in that: The fixed die mechanism (1) is provided with a locking module (3), one end of the locking module (3) being fixedly mounted on the fixed die mechanism (1) and the other end thereof being fixedly mounted on the movable die plate (22).

5. A multi-part large-angle automobile hollow plastic tube mold according to claim 4, characterized in that: A top block (4) is provided on the push plate (25) of the movable mold mechanism (2). The top block (4) is in a "Z" shape. One end of the top block (4) is fixedly mounted on the push plate (25) and the other end thereof is against the back of the movable mold plate (22).

6. A multi-part large-angle automobile hollow plastic tube mold according to claim 5, characterized in that: One end of the locking module (3) abuts against the step surface of the top block (4).

7. The multi-part large-angle automobile hollow plastic pipe mold according to claim 1, characterized in that: The first driving device (234) is a hydraulic cylinder.

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