Injection mold for automobile parts
The push mechanism with a limit mechanism in the mold design addresses the issue of inconsistent wall thickness in automobile pipes by maintaining uniformity during molding, enhancing the production quality and yield.
Patent Information
- Application Number
- CN202422014620.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-19
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-08-19
AI Technical Summary
During the mold injection molding process, the middle part of the automobile pipe is prone to arching, resulting in the flashes on both sides of the product or the size does not meet the standards, affecting the inconsistent thickness of the pipe wall and reducing the yield rate.
The limiting mechanism and the thrust mechanism are adopted. Through the cooperation of the fixed template and the moving template, the cylinder and sliding components are used to control the movement of the limiting mechanism to ensure that the thickness of the pipe wall when the vehicle pipe is formed in the mold and prevent arches.
Effectively prevent uneven thickness of the automobile pipeline pipe wall during injection molding, reduce the problem of flash and size inconsistency, improve product yield, and protect the mold from damage.
Smart Images
Figure CN223099817U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of injection molds, and in particular to an injection mold for automotive parts. Background Art
[0002] With the rapid development of the automotive industry, the requirements for the quality and production efficiency of automotive parts, especially seals, are getting higher and higher. As a key tool for producing these parts, the structural design of injection molds directly affects the quality and production efficiency of products.
[0003] When an automotive pipe is injection-molded by a mold, there is a risk that the middle part bulges, causing warping, resulting in flash on both sides of the product or non-compliant dimensions, leading to inconsistent wall thickness of the automotive pipe, thereby affecting the yield rate of the product. Summary of the Utility Model
[0004] In order to improve the problem that the wall thickness of the injection-molded automotive pipe is inconsistent, affecting the product yield rate, the present application provides an injection mold for automotive parts.
[0005] The injection mold for automotive parts provided by the present application adopts the following technical solutions:
[0006] An injection mold for automotive parts includes a moving template, a fixed template, a front mold, a rear mold, a pushing mechanism and a limiting mechanism; the moving template is arranged inside the front mold, the fixed template is arranged inside the rear mold, the front mold is arranged on the top of the rear mold, the pushing mechanism is obliquely arranged on the rear mold, the end face of the fixed template is an inclined surface, and the end face of the moving template is parallel to the end face of the fixed template; the limiting mechanism is installed on the pushing mechanism and is used to limit the moving stroke of the pushing mechanism on the end face of the fixed template and press against the injection-molded pipe wall to keep the thickness uniform.
[0007] By adopting the above technical solutions, the automotive pipe is injection-molded by the fixed template and the moving template. The pushing mechanisms on both sides of the fixed template move towards each other until they are close to each other. The automotive pipe is formed between the fixed template and the moving template. The limiting mechanism prevents the middle of the injection-molded automotive pipe from bulging, and the produced product has a consistent wall thickness, improving the product yield rate.
[0008] Optionally, the pushing mechanism includes a first air cylinder, a second air cylinder and a sliding assembly. The first air cylinder is fixed on one side of the fixed template, the second air cylinder is fixed on the other side of the fixed template. The two ends of the limiting mechanism are respectively connected to the piston rods of the first air cylinder and the second air cylinder. The sliding assembly is respectively installed on the piston rods of the first air cylinder and the second air cylinder and is used to push the limiting mechanism located on the fixed template to move.
[0009] By adopting the above technical solution, the piston rods of the first cylinder and the second cylinder approach or move away from each other, so as to push the limiting mechanism to abut or move away.
[0010] Optionally, the sliding assembly includes a slide rail and a slide block. The slide rail is fixed on the fixed template, the slide block is slidably arranged on the slide rail, and the slide block is connected to the piston rod of the first cylinder / second cylinder.
[0011] By adopting the above technical solution, when the piston rod of the first cylinder / second cylinder extends and pushes the slide block, and the slide block moves on the slide rail, it drives the limiting mechanism to move along the inclined end face of the fixed template.
[0012] Optionally, the limiting mechanism includes a slide rod, a push plate, a slider bundle block and a slider stop block. The push plate is fixed on the slide block, the slide rod is fixed on the side of the push plate facing away from the piston rod of the first cylinder / second cylinder, the slider stop block is inserted on the slide rod, and the slider bundle block is inserted on the slider stop block.
[0013] By adopting the above technical solution, the push plate drives the slide rod and the slider stop block clamped on the slide rod to move together on the inclined end face of the fixed template, and the slider bundle block is used to limit the movement of the slider stop block to the corresponding position.
[0014] Optionally, a first inclined surface is formed on the slider bundle block, and a second inclined surface is formed on the slider baffle, and the first inclined surface and the second inclined surface abut against each other.
[0015] By adopting the above technical solution, the first inclined surface and the second inclined surface fit together, improving the clamping degree between the slider bundle block and the slider stop block. The two inclined surfaces abut against each other, thereby preventing the slide rod from tipping up and ensuring the yield rate of the injection-molded products.
[0016] Optionally, a clamping groove is formed on the moving template, and the shape and specification of the clamping groove are adapted to those of the slider bundle block.
[0017] By adopting the above technical solution, during the mold opening process, the clamping groove clamps the slider bundle block and pulls it up together, releasing the limiting restraint on the slider stop block, facilitating the sliding of the slide rod and the slider stop block on the fixed template.
[0018] Optionally, a side end face tangent to the slider stop block is formed on the end face of the fixed template. A gap for the slider stop block to slide is formed between the side end face and the slide rod, and the gap decreases from the end to the middle along the axial direction of the slide rod.
[0019] By adopting the above technical solution, the side end face of the slider stop block abuts against the side end face of the fixed template. Since the gap is wide at both ends and narrow in the middle, when the slider stop block moves along the axis of the slide rod to the middle in the gap, it is tightened to prevent uneven wall thickness of the injection-molded automobile tube.
[0020] Optionally, the axis of the piston rod of the first cylinder and the axis of the piston rod of the second cylinder are collinear.
[0021] By adopting the above technical solution, the piston rods of the first cylinder and the second cylinder are coaxial and collinear, so that the slide bars on both sides sliding on the fixed template are kept coaxial, ensuring the perpendicularity of the automotive pipeline.
[0022] In summary, the present application includes at least one of the following beneficial technical effects:
[0023] 1. The limiting mechanism is used for the automotive pipeline injection-molded between the fixed template and the moving template to prevent the middle part of the injection from arching towards each other, avoiding uneven wall thickness of the injection-molded automotive pipeline.
[0024] 2. The limiting mechanism plays a self-locking role for the injection-molded automotive pipeline on the slide bar, preventing flash or non-compliant dimensions on both sides of the product during injection molding, reducing the risk of mold damage, and improving the yield rate of the product. Description of the Drawings
[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0026] Figure 1 is a schematic diagram showing the overall structure of the present application.
[0027] Figure 2 is a cross-sectional view of the fixed template and the rear mold shown in the present application.
[0028] Figure 3 is a schematic diagram showing the structure of the pushing mechanism in the present application.
[0029] Figure 4 is a schematic diagram showing the structure of the front mold and the moving template observed from a top view in the present application.
[0030] Figure 5 is a schematic diagram showing the structure of the limiting mechanism in the present application.
[0031] Figure 6 is shown in the present application Figure 3 An enlarged view in the direction A.
[0032] Reference numerals: 1, moving template; 2, fixed template; 3, front mold; 4, rear mold; 5, pushing mechanism; 6, limiting mechanism; 51, first cylinder; 52, second cylinder; 53, sliding assembly; 531, slide rail; 532, sliding seat; 61, slide bar; 62, push plate; 63, slider bundle block; 64, slider stop block; 631, first inclined surface; 632, second inclined surface; 7, clamping groove. Detailed implementation mode
[0033] The following is a further detailed description of this application in conjunction with the attached Figures 1-6 drawings.
[0034] The embodiment of this application discloses an injection mold for automobile parts.
[0035] Referring to Figure 1 , it includes a moving template 1, a fixed template 2, a front mold 3, a rear mold 4, a pushing mechanism 5 and a limiting mechanism 6; the rear mold 4, the fixed template 2, the moving template 1 and the front mold 3 are arranged in sequence from bottom to top. The moving template 1 is arranged in the front mold 3, the fixed template 2 is arranged in the rear mold 4, the front mold 3 is arranged on the top of the rear mold 4, the pushing mechanism 5 is arranged obliquely on the rear mold 4, the end face of the fixed template 2 is an inclined surface, the end face of the moving template 1 and the end face of the fixed template 2 are parallel, when the moving template 1 and the fixed template 2 are in contact, the end face of the moving template 1 and the end face of the fixed template 2 are in fit. The cross-sections of the front mold 3 and the rear mold 4 are both planar. The limiting mechanism 6 is installed on the pushing mechanism 5, and is used to limit the moving stroke of the pushing mechanism 5 on the end face of the fixed template 2 and press against the wall of the injection molding to keep the thickness uniform.
[0036] As shown in Figure 3 , the pushing mechanism 5 is composed of a first cylinder 51, a second cylinder 52 and a sliding assembly 53. The first cylinder 51 and the second cylinder 52 are coaxial. The sliding assembly 53 and the first cylinder 51 / second cylinder 52 form a certain angle. The first cylinder 51 is fixed on one side of the fixed template 2, the second cylinder 52 is fixed on the other side of the fixed template 2. The two ends of the limiting mechanism 6 are respectively connected to the piston rods of the first cylinder 51 and the second cylinder 52. The sliding assembly 53 is respectively installed on the piston rods of the first cylinder 51 and the second cylinder 52, and is used to push the limiting mechanism 6 located on the fixed template 2 to move. The axis of the piston rod of the first cylinder 51 and the axis of the piston rod of the second cylinder 52 are collinear. The piston rod of the first cylinder 51 and the piston rod of the second cylinder 52 expand and contract synchronously. The piston rod of the first cylinder 51 and the piston rod of the second cylinder 52 push each other closer, so that the limiting mechanism 6 moves closer to each other, thus facilitating the injection molding of the automobile pipeline; when the first cylinder 51 and the second cylinder 52 move towards each other and drive the limiting mechanism 6 to move away from each other at the same time, it is convenient for the automobile pipeline injection molding to be demolded.
[0037] As shown in Figure 3As shown, the sliding assembly 53 includes a slide rail 531 and a slide seat 532. The slide rail 531 is fixed on the fixed mold plate 2, and the slide seat 532 is slidably arranged on the slide rail 531. The slide seat 532 is connected to the piston rod of the first cylinder 51 / the second cylinder 52. When the first cylinder 51 / the second cylinder 52 is extended, the slide seat 532 is driven to move along the slide rail 531, so that the movement process of the parts connected to the slide seat 532 maintains straightness. The slide rail 531 is provided as a fixed platform, so that the slide seat 532 can slide freely thereon, thereby improving the smooth movement on the track and avoiding the slide seat 532 and the parts connected to the slide seat 532 from being offset.
[0038] See also Figure 2 , Figure 5 and Figure 6 As shown, the limiting mechanism 6 includes a slide bar 61, a push plate 62, a slider block 63 and a slider block 64. The push plate 62 is fixed on the slide seat 532. The slide bar 61 is fixed on the side of the push plate 62 away from the piston rod of the first cylinder 51 / the second cylinder 52. The slide bar 61 is placed on the inclined end surface of the top of the fixed template 2. The inclined end surface is provided with a track groove for the slide bar 61 to slide. The slider block 64 is plugged into the slide bar 61. When the slide bar 61 moves with the first cylinder 51 or the second cylinder 52, it drives the slider block 64 to move together. A side end face tangent to the slider block 64 is formed on the end face of the template 2, and a gap is formed between the side end face and the slide rod 61 for the slider block 64 to slide. The gap decreases from the end to the middle along the axial direction of the slide rod 61. When the slider block 64 slides to a position close to the middle of the gap, the slider block 64 and the side wall of the fixed template 2 are clamped, and the slider bundle block 63 is inserted into the slider block 64 and slides to the corresponding position. The slider bundle block 63 and the movable template 1 are clamped, and the slider bundle block 63 is locked to the slider block 64 to prevent the slide rod 61 from slipping as a whole.
[0039] See also Figure 5 As shown, a first inclined surface 631 is provided on the slider block 63, and a second inclined surface 632 is provided on the slider baffle. The first inclined surface 631 and the second inclined surface 632 abut against each other. When the slider block 63 moves downward, the first inclined surface 631 and the second inclined surface 632 rub against each other to increase the abutting force.
[0040] See also Figure 4 As shown, a slot 7 is provided on the movable template 1, and the slot 7 and the slider block 63 have matching shapes and specifications. When the mold is opened, the slider block 63 is clamped in the slot 7 of the movable template 1. After the movable template 1 is lifted and pulled to open, the slider block is pulled upward together, thereby releasing the limit of the slider block 63 on the slider stopper 64, and the slider block 63 can slide freely in the gap.
[0041] The implementation principle of an injection mold for an automotive part in an embodiment of this application is as follows: The piston rods of the first cylinder 51 and the second cylinder 52 are both lifted. The side wall of the slider stop 64 abuts against the inner wall of the fixed template 2. The slider binding block 63 limits and fastens the slider stop 64, so that the slide bar 61 on the fixed template 2 is locked. A slider stop 64 and a slider binding block 63 are added to the head of the slide bar 61. The two inclined surfaces abut against each other to prevent the slider from tilting, making the wall thickness of the automotive pipe uniform, avoiding flash on both sides of the product or non-compliance with dimensions caused by the slider slipping during the injection process, effectively protecting the mold, and effectively improving the yield rate of the product. After injection molding, when the mold is opened for the product, when the fixed template 2 and the moving template 1 are opened, the slider binding block 63 releases the limit on the slider stop 64. The slider binding block 63 moves upward together with the fixed mold core. The slide bar 61 is then driven by the cylinders on both sides to perform a core-pulling operation backward. The slider moves according to the set stroke. After reaching the position, the product is then ejected.
[0042] Unless otherwise defined, the technical terms or scientific terms used in this application shall have the ordinary meanings understood by those of ordinary skill in the art to which this application pertains. The words "first", "second", "third", and similar terms used in the specification and claims of this application do not denote any order, quantity, or importance, but are only used to distinguish different components. The words "a" or "an" and similar terms do not denote a quantity limitation, but mean that there is at least one. The words "including" or "comprising" and similar terms are intended to mean that the elements or items appearing before "including" or "comprising" cover the elements or items listed after "including" or "comprising" and their equivalents, and do not exclude other elements or items. The terms "upper", "lower", "left", "right", etc. are only used to indicate relative position relationships. When the absolute position of the object being described changes, the relative position relationships may also change accordingly.
[0043] The above are all the preferred embodiments of this application. Without limiting the protection scope of this application accordingly, therefore: All equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.
Claims
1. An injection mold for automotive parts, characterized in that: The invention comprises a movable die plate (1), a fixed die plate (2), a front die plate (3), a rear die plate (4), a push mechanism (5) and a limiting mechanism (6); the movable die plate (1) is arranged in the front die plate (3), the fixed die plate (2) is arranged in the rear die plate (4), the front die plate (3) is arranged on the top of the rear die plate (4), the push mechanism (5) is arranged obliquely on the rear die plate (4), the end face of the fixed die plate (2) is an inclined face, and the end face of the movable die plate (1) is parallel to the end face of the fixed die plate (2); the limiting mechanism (6) is installed on the push mechanism (5) and is used to limit the moving stroke of the push mechanism (5) located on the end face of the fixed die plate (2) and to press against the injection molded tube wall to maintain uniform thickness.
2. The injection mold for an automotive part according to claim 1, wherein: The pushing mechanism (5) comprises a first cylinder (51), a second cylinder (52) and a sliding assembly (53); the first cylinder (51) is fixed on one side of the fixed mold plate (2); the second cylinder (52) is fixed on the other side of the fixed mold plate (2); the two ends of the limiting mechanism (6) are respectively connected to the piston rods of the first cylinder (51) and the second cylinder (52); the sliding assembly (53) is respectively mounted on the piston rods of the first cylinder (51) and the second cylinder (52) and is used to push the limiting mechanism (6) located on the fixed mold plate (2) to move.
3. The injection mold for an automotive part according to claim 2, wherein: The sliding assembly (53) comprises a sliding rail (531) and a sliding seat (532); the sliding rail (531) is fixed on the fixed mold plate (2); the sliding seat (532) is slidably arranged on the sliding rail (531); and the sliding seat (532) is connected to the piston rod of the first cylinder (51) / the second cylinder (52).
4. The injection mold for an automotive part according to claim 3, wherein: The limiting mechanism (6) comprises a sliding rod (61), a push plate (62), a slider block (63) and a slider block (64); the push plate (62) is fixed on a sliding seat (532); the sliding rod (61) is fixed on a side of the push plate (62) away from the piston rod of the first cylinder (51) / the second cylinder (52); the slider block (64) is plugged into the sliding rod (61); and the slider block (63) is plugged into the slider block (64).
5. The injection mold for an automotive part according to claim 4, characterized in that: The slider bundle block (63) is provided with a first inclined surface (631), and the slider stopper block (64) is provided with a second inclined surface (632), and the first inclined surface (631) and the second inclined surface (632) are in contact with each other.
6. The injection mold for an automotive part according to claim 5, characterized in that: The movable plate (1) is provided with a clamping groove (7), and the clamping groove (7) and the slider bundle block (63) are compatible in shape and specification.
7. The injection mold for an automotive part according to claim 4, wherein: A side end surface tangent to the slider block (64) is formed on the end surface of the fixed template (2), and a gap is formed between the side end surface and the slide bar (61) for the slider block (64) to slide, and the gap decreases from the end to the middle along the axial direction of the slide bar (61).
8. The injection mold for an automotive part according to claim 2, wherein: The piston rod axis of the first cylinder (51) and the piston rod axis of the second cylinder (52) are collinear.