CN222972700U - Injection mold of automobile wheel arch - Google Patents
Injection mold of automobile wheel arch Download PDFInfo
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- CN222972700U CN222972700U CN202422199540.9U CN202422199540U CN222972700U CN 222972700 U CN222972700 U CN 222972700U CN 202422199540 U CN202422199540 U CN 202422199540U CN 222972700 U CN222972700 U CN 222972700U
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- mold
- driving device
- automobile wheel
- wheel arch
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Abstract
The application discloses an injection mold for an automobile wheel arch, which comprises a mold body, a driving device, a thimble assembly and a first molding assembly, wherein the mold body is provided with an upper mold and a lower mold, the driving device is arranged on the lower mold, the thimble assembly is arranged on the lower mold and is connected with the driving device, and the first molding assembly is arranged on the lower mold and is used for molding a rib position of the automobile wheel arch. The application has the beneficial effects that the first molding assembly at the rib position of the product can be firstly extracted through different actions of the driving device, and then the whole product is ejected through the driving device, so that the problem of deformation of the product caused by stress concentration at the rib position in the demolding process is avoided, and the dimensional accuracy and the shape integrity of the automobile wheel arch can be ensured through the step-by-step demolding mode, and the specification requirement of the product is met.
Description
Technical Field
The application relates to the technical field of molds, in particular to an injection mold for automobile wheel rims.
Background
The injection mold is a tool for producing plastic products and also a tool for endowing the plastic products with complete structures and precise dimensions. Injection molding is a processing method used for mass production of parts with complex shapes, and specifically refers to injection molding of heated and melted plastic into a mold cavity by an injection molding machine under high pressure, and cooling and solidification are carried out to obtain a molded product.
The existing wheel arch structure is shown in fig. 1, and has a plurality of rib positions 101, the wheel arch product is relatively large, the product material is relatively soft, the deformation of the produced product is relatively large, if the produced product is ejected and demoulded according to normal once, the deformation easily occurs at the rib positions 101, and the product can not meet the specification requirement of the product, therefore, the injection mold of the automobile wheel arch is provided for solving the technical problems.
Disclosure of utility model
One of the purposes of the application is to provide an injection mold for automobile wheel rims.
The injection mold for the automobile wheel arch comprises a mold body, a driving device, an ejector pin assembly and a first molding assembly, wherein the mold body is provided with an upper mold and a lower mold, the driving device is arranged on the lower mold, the ejector pin assembly is arranged on the lower mold and connected with the driving device, the first molding assembly is arranged on the lower mold and used for molding the rib position of the automobile wheel arch, after the mold is opened, the first molding assembly is suitable for being separated from the rib position of the automobile wheel arch under the action of the driving device when the driving device performs a first action, and when the driving device performs a second action, the driving device is suitable for ejecting the automobile wheel arch in the cavity of the lower mold through the ejector pin assembly.
Preferably, the lower die comprises a die frame and a die body, the die body is vertically and slidably arranged at the top end of the die frame, the ejector pin assembly is vertically and slidably arranged in the die frame, the driving device is arranged at the die body, the output end of the driving device is in matched connection with the ejector pin assembly, the first forming assembly is arranged at the top end of the die frame and is matched with the die body, when the driving device performs a first action, the die body is suitable for being driven by the driving device to move upwards and away from the die frame, so that the first forming assembly is separated from the rib position of the automobile wheel arch, and when the driving device performs a second action, the ejector pin assembly is suitable for being driven by the driving device to move upwards relative to the die body and eject the automobile wheel arch.
Preferably, the die body and the thimble assembly are matched through a traction structure, when the driving device performs a first action, the traction structure is in a locking state, and the thimble assembly is suitable for moving upwards synchronously with the die body under the action of the traction structure.
Preferably, the traction structure comprises a traction rod and a traction sleeve, wherein the traction rod is arranged on the die body, the traction sleeve is arranged on the thimble assembly, the traction rod is in sliding fit with the traction sleeve, and when the driving device performs a first action, the traction rod and the traction sleeve are in a limit far-away state.
Preferably, the lower die is internally provided with a plurality of pouring gates, and the pouring gates are close to the side positions of the rib positions.
Preferably, the injection mold of the automobile wheel arch further comprises a plurality of second molding assemblies, the second molding assemblies are horizontally and slidably mounted on the lower mold and matched with the lower mold to form runners matched with the pouring gates, and the second molding assemblies are matched with the upper mold through guide structures.
Preferably, the guide structure comprises an inclined guide post and an inclined guide groove, wherein the inclined guide post is arranged on the upper die, the inclined guide groove is arranged on the second molding assembly, and when the die is opened, the second molding assembly is suitable for horizontally sliding and keeping away from the automobile wheel arch under the inclined sliding fit of the inclined guide post and the inclined guide groove.
Preferably, the runner comprises a buffer section and a vertical section, a first end of the buffer section is connected with the gate, a second end of the buffer section is communicated with the bottom end of the vertical section, and the top end of the vertical section is communicated with the lower die cavity.
Preferably, the buffer section comprises a horizontal portion and a vertical portion, a first end of the horizontal portion forms a first end of the buffer section, a second end of the horizontal portion is communicated with a top end of the vertical portion, and a bottom end of the vertical portion forms a second end of the buffer section.
Preferably, the conducting area of the vertical section is gradually increased from top to bottom.
Compared with the prior art, the application has the beneficial effects that:
The utility model is provided with the driving device, the first molding assembly at the rib position of the product can be firstly extracted through different actions of the driving device, and then the whole product is ejected through the driving device, so that the problem of deformation of the product caused by stress concentration at the rib position in the demolding process is avoided, and the size precision and the shape integrity of the automobile wheel arch can be ensured through the step-by-step demolding mode, so that the specification requirement of the product is met.
Drawings
FIG. 1 is a schematic diagram of the automobile wheel arch product of the present utility model.
Fig. 2 is a schematic diagram of the overall structure of the present utility model.
Fig. 3 is a schematic diagram of the structure of the upper die after die opening.
Fig. 4 is a schematic structural view of a first molding assembly according to the present utility model.
Fig. 5 is a schematic diagram of the driving device of the present utility model during a first operation.
Fig. 6 is a schematic diagram of a driving device according to a second embodiment of the present utility model.
Fig. 7 is a schematic drawing of the traction structure of the present utility model.
FIG. 8 is a schematic perspective view of the runner of the present utility model mated with a second molding assembly.
FIG. 9 is a schematic view of a flow channel according to the present utility model.
FIG. 10 is a schematic front view of the runner of the present utility model mated with a second molding assembly.
The drawing shows that the automobile wheel arch comprises a wheel arch body 1, a rib position 101, a mould body 201, an upper mould 202, a lower mould 2021, a mould body 2022, a mould frame 3, a driving device 4, a thimble assembly 5, a first forming assembly 6, a second forming assembly 7, a pouring gate 8, a traction structure 801, a traction rod 802, a traction sleeve 9, a runner 901, a vertical section 902, a buffer section 9021, a vertical section 9022 and a horizontal section.
Detailed Description
The present application will be further described with reference to the following specific embodiments, and it should be noted that, on the premise of no conflict, new embodiments may be formed by any combination of the embodiments or technical features described below.
In the description of the present application, it should be noted that, for the azimuth words such as terms "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the azimuth and positional relationships are based on the azimuth or positional relationships shown in the drawings, it is merely for convenience of describing the present application and simplifying the description, and it is not to be construed as limiting the specific scope of protection of the present application that the device or element referred to must have a specific azimuth configuration and operation.
It should be noted that the terms "first," "second," and the like in the description and in the claims are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.
In one preferred embodiment of the present application, as shown in fig. 1 to 10, an injection mold for an automobile wheel arch comprises a mold body 2, a driving device 3, a thimble assembly 4 and a first molding assembly 5, wherein the mold body 2 is provided with an upper mold 201 and a lower mold 202, the driving device 3 is mounted on the lower mold 202, the thimble assembly 4 is mounted on the lower mold 202 and connected with the driving device 3, and the first molding assembly 5 is mounted on the lower mold 202 and is used for molding a rib 101 of the automobile wheel arch 1.
When the upper die 201 and the lower die 202 are separated, the driving device 3 is started to perform a first action at this time, and then the first molding assembly 5 is separated from the rib 101 of the automobile wheel arch 1 under the action of the driving device 3, and when the driving device 3 performs a second action, the driving device 3 can eject a product (namely the automobile wheel arch 1) in the die cavity of the lower die 202 through the ejector pin assembly 4, so that the whole demolding process is realized.
Therefore, when demolding is performed, the first molding assembly 5 at the rib position 101 of the product can be firstly pulled out, and the product is hardly deformed due to the fact that the product is located in the mold cavity (the whole mold cavity is used for limiting the column), and then the whole product is ejected through the driving device 3, so that the problem of deformation of the product due to stress concentration at the rib position 101 in the demolding process is avoided. Through the step-by-step demoulding mode, the size precision and the shape integrity of the automobile wheel arch 1 can be ensured, and the specification requirement of products can be met. Meanwhile, only one driving device is needed in the whole process, so that the cost and the installation space in the die can be reduced.
The specific structure and operation principle of the driving device 3 are well known to those skilled in the art, and therefore, detailed description will not be given here, and the common driving device 3 includes a hydraulic cylinder, a pneumatic cylinder, a linear motor, and the like, but the hydraulic cylinder is preferably used in the present application.
As a further description of the above embodiment, the lower die 202 includes a die frame 2022 and a die body 2021, the die body 2021 is vertically slidably mounted on the top end of the die frame 2022, the ejector pin assembly 4 is vertically slidably mounted in the die frame 2022, the driving device 3 is mounted on the die body 2021, the output end of the driving device is cooperatively connected with the ejector pin assembly 4, and the first molding assembly 5 is fixedly mounted on the top end of the die frame 2022 and is cooperatively connected with the die body 2021.
It will be understood that, as shown in a of fig. 5, it is assumed that the first operation is performed by the driving device 3 (i.e. the extension of the hydraulic cylinder) at this time, one end of the piston rod of the hydraulic cylinder abuts against the bottom end of the mold frame 2022, and then the mold body 2021 is moved up and away from the mold frame 2022 under the support action of the mold frame 2022 under the extension of the driving device 3, which corresponds to the extraction of the first molding assembly 5 and the rib 101 of the automobile wheel arch 1, as shown in (b) of fig. 5.
When the driving device 3 performs the second action (i.e. shortening the hydraulic cylinder), the mold body 2021 moves down and abuts against the top end of the mold frame 2022 (returns to the initial state at this time), and when the driving device 3 continues to shorten, one end of the piston rod of the hydraulic cylinder pulls the ejector pin assembly 4 up, so that the ejector pin assembly 4 ejects and demolds the automobile wheel arch 1 in the mold body 2021.
In the above process, there may be a problem that during the process of driving the die body 2021 by the driving device 3 to move upwards, the ejector pin assembly 4 is stationary, and other structures matched with the die body 2021 may exist on the ejector pin assembly 4, so that interference may be caused to the movement of the die body 2021.
Therefore, in order to solve the above-mentioned problems, in one embodiment of the present application, as shown in fig. 5, the mold body 2021 and the ejector pin assembly 4 are matched by the traction structure 8, it should be understood that the ejector pin assembly 4 is a conventional ejector structure in the mold field, and is composed of a top plate and a plurality of ejector pins mounted on the top plate, and one end of a piston rod of the driving device 3 (i.e. a hydraulic cylinder) can be slidably matched with the ejector pin assembly 4 (top plate). In the initial state, the top plate of the ejector pin assembly 4 slides to the lowest limit position with respect to the driving device 3.
It will be appreciated that when the driving device 3 performs the first action, the traction structure 8 is in the locked state, and the ejector pin assembly 4 can move up synchronously with the die body 2021 (i.e. the top plate moves up along one end of the piston rod of the hydraulic cylinder) under the action of the traction structure 8, as shown in fig. 5 (b), that is, the ejector pin assembly 4 and the die body 2021 remain in a relatively stationary state, so that no interference is caused to the upward movement of the die body 2021. In the same way, when the driving device 3 performs the second action, the traction structure 8 will be in the unlocking state at this time, that is, when the driving device 3 drives the thimble assembly 4 to move upwards, the die body 2021 will be kept in a static state at this time, so as to realize the demolding of the product.
The application is not limited to the specific configuration of the traction structure 8, and a specific embodiment is provided below for description:
traction structure 8 includes traction rod 801 and traction sleeve 802, traction rod 801 is mounted on die body 2021, traction sleeve 802 is mounted on thimble assembly 4, and traction rod 801 is slidably engaged with traction sleeve 802. Specifically, as shown in FIG. 7, when the traction bar 801 and the traction sleeve 802 are relatively far apart to a limit state, the traction structure 8 is in a locked state, and the traction bar 801 and the traction sleeve 802 can relatively slide, so that the traction structure 8 is in an unlocked state.
In order to facilitate understanding of the demolding process of the product, the working principle thereof is described below:
in the initial state, as shown in fig. 5 (a), at this time, the driving device 3 (hydraulic cylinder) extends, one end of a piston rod of the hydraulic cylinder abuts against the bottom end of the mold frame 2022, and then under the supporting action of the mold frame 2022, the mold body 2021 is driven to move upwards and away from the mold frame 2022 by the extension of the driving device 3, and of course, the ejector pin assembly 4 can move upwards synchronously with the mold body 2021 under the action of the traction structure 8 (in the locking state), and the first molding assembly 5 is fixedly mounted on the mold frame 2022, which is equivalent to that the first molding assembly 5 is pulled out from the rib position 101 of the automobile wheel arch 1, as shown in fig. 5 (b). When the driving device 3 continues to shrink, one end of the piston rod of the hydraulic cylinder drives the ejector pin assembly 4 to pull and move upwards, so that the ejector pin assembly 4 ejects and demolds the automobile wheel arch 1 in the die body 2021, as shown in (d) of fig. 6, and the demolding process of the whole product is completed.
In one embodiment of the present application, as shown in fig. 4, since the product itself is large, a plurality of gates 7 may be provided at the lower mold 202, the gates 7 being located near the rib 101 and at the side portions of the product to ensure that molten plastic can be uniformly filled into the corners of the mold during injection molding. The design of the plurality of gates 7 not only improves the production efficiency, but also helps to reduce the stress concentration inside the product, thereby further improving the overall quality of the product.
Further, as shown in fig. 8 and 9, the injection mold for the automobile wheel arch further comprises a plurality of second molding assemblies 6, wherein the second molding assemblies 6 are horizontally slidably mounted on the lower mold 202 to be matched with the lower mold 202 and form a runner 9 matched with the runner 7, that is, molten material enters the runner 9 from the runner 7 and then enters the mold cavity of the lower mold 202 from the runner 9, and the second molding assemblies 6 are matched with the upper mold 201 through a guiding structure.
Specifically, the guiding structure comprises an inclined guide post and an inclined guide groove, wherein the inclined guide post is arranged on the upper die 201, the inclined guide groove is arranged on the second molding assembly 6, when the die is opened, the inclined guide post moves upwards, and the second molding assembly 6 can horizontally slide and be far away from the automobile wheel arch 1 (product) under the inclined sliding fit of the inclined guide post and the inclined guide groove.
It should be noted that, by designing the runner 9, the molten material in the runner 9 will also cool and form a part of the product during the molding process of the later product, the runner 9 can also act as a riser at this time, and thus can perform a feeding function on the product (the main rib 101), and also has the functions of preventing shrinkage cavity, exhaust and slag collection. Through the guide structure, the second molding assembly 6 can be separated from the solidified runner 9 during mold opening, and the demolding effect on the product can be greatly improved.
In the injection mold, the molten material flows into the gate 7 of the lower mold 202 from top to bottom, so that the molten material generates a large impact force, which affects the quality of the subsequent product. Therefore, as shown in fig. 9, in the application, the runner 9 can be divided into a buffer section 902 and a vertical section 901 which are communicated, the first end of the buffer section 902 is connected with the gate 7, the second end of the buffer section 902 is communicated with the bottom end of the vertical section 901, and the top end of the vertical section 901 is communicated with the cavity of the lower die 202, so that the impact force when the molten material flows into the cavity can be effectively relieved by design. The provision of the buffer section 902 allows a degree of deceleration and dispersion of the melt prior to entering the vertical section 901, thereby reducing direct impact to the mold cavity. The vertical section 901 ensures that the melt can smoothly enter the mold cavity while maintaining sufficient pressure to ensure filling within the mold cavity.
Further, in order to make the impact force of the molten material smaller, the buffer segment 902 includes a horizontal portion 9022 and a vertical portion 9021, a first end of the horizontal portion 9022 forms a first end of the buffer segment 902, a second end of the horizontal portion 9022 communicates with a top end of the vertical portion 9021, and a bottom end of the vertical portion 9021 forms a second end of the buffer segment 902, that is, a bottom end of the vertical portion 9021 communicates with a bottom end of the vertical segment 901. The provision of the horizontal portion 9022 enables further dispersion and deceleration of the melt prior to entry into the vertical portion 9021, thereby further reducing the impact force to the mold cavity. By this design, the melt is sufficiently buffered before entering the mold cavity, ensuring the stability of the molding process and the quality of the product.
Further, as shown in fig. 10, the conducting area of the vertical section 901 increases gradually from top to bottom, that is, the molten material enters from the lower end of the vertical section 901 and then enters into the mold cavity from the upper end, the conducting area of the vertical section 901 decreases gradually, so that the molten material has a certain pressure after entering into the mold cavity, thereby ensuring that the molten material in the mold cavity can be filled uniformly, and avoiding the molding defect caused by insufficient pressure. The design not only improves the molding quality of the product, but also helps to reduce the stress concentration phenomenon caused by uneven flow of the molten material.
The foregoing has outlined the basic principles, features, and advantages of the present application. It will be understood by those skilled in the art that the present application is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present application, and various changes and modifications may be made therein without departing from the spirit and scope of the application, which is defined by the appended claims. The scope of the application is defined by the appended claims and equivalents thereof.
Claims (10)
1. An injection mold for an automobile wheel arch, comprising:
the die body is provided with an upper die and a lower die;
The driving device is arranged on the lower die;
The ejector pin assembly is arranged on the lower die and connected with the driving device, and
The first molding assembly is arranged on the lower die and used for molding rib positions of automobile wheel rims, and after the die is opened:
When the driving device performs a first action, the first molding assembly is suitable for being separated from the rib position of the automobile wheel arch under the action of the driving device, and when the driving device performs a second action, the driving device is suitable for ejecting the automobile wheel arch in the lower die cavity through the ejector pin assembly.
2. The injection mold of the automobile wheel arch according to claim 1, wherein the lower mold comprises a mold frame and a mold body, the mold body is vertically and slidably arranged at the top end of the mold frame, the ejector pin assembly is vertically and slidably arranged in the mold frame, the driving device is arranged at the mold body, the output end of the driving device is in matched connection with the ejector pin assembly, and the first molding assembly is arranged at the top end of the mold frame and matched with the mold body;
when the driving device performs a first action, the die body is suitable for moving upwards and away from the die frame under the driving of the driving device, so that the first molding assembly is separated from the rib position of the automobile wheel arch, and when the driving device performs a second action, the thimble assembly is suitable for moving upwards relative to the die body under the driving of the driving device and ejecting the automobile wheel arch.
3. The injection mold for an automobile wheel arch according to claim 2, wherein the mold body and the ejector pin assembly are matched through a traction structure, and when the driving device performs a first action, the traction structure is in a locking state, and the ejector pin assembly is suitable for moving upwards synchronously with the mold body under the action of the traction structure.
4. The injection mold of an automobile wheel arch according to claim 3, wherein the traction structure comprises a traction rod and a traction sleeve, the traction rod is mounted on the mold body, the traction sleeve is mounted on the thimble assembly, the traction rod is in sliding fit with the traction sleeve, and when the driving device performs a first action, the traction rod and the traction sleeve are in a limit far-away state.
5. The injection mold for an automobile wheel arch according to any one of claims 1 to 4, wherein the lower mold has a plurality of gates therein, the gates being located near the side of the rib position.
6. The injection mold for an automobile wheel arch according to claim 5, further comprising a plurality of second molding assemblies horizontally slidably mounted on the lower mold and engaged with the lower mold and forming runners engaged with the gates, the second molding assemblies engaged with the upper mold through guide structures.
7. The injection mold of an automobile wheel arch according to claim 6, wherein the guide structure comprises an inclined guide post and an inclined guide groove, the inclined guide post is mounted on the upper mold, the inclined guide groove is formed in the second molding assembly, and the second molding assembly is suitable for horizontally sliding and moving away from the automobile wheel arch under the inclined sliding fit of the inclined guide post and the inclined guide groove during mold opening.
8. The injection mold of an automobile wheel arch according to claim 7, wherein the runner comprises a buffer section and a vertical section, a first end of the buffer section is connected with the gate, a second end of the buffer section is communicated with a bottom end of the vertical section, and a top end of the vertical section is communicated with the lower mold cavity.
9. The injection mold of an automobile wheel arch according to claim 8, wherein the buffer section comprises a horizontal portion and a vertical portion, a first end of the horizontal portion forms a first end of the buffer section, a second end of the horizontal portion communicates with a top end of the vertical portion, and a bottom end of the vertical portion forms a second end of the buffer section.
10. The injection mold of an automobile wheel arch according to claim 8, wherein the vertical sections have an increasing conduction area from top to bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202422199540.9U CN222972700U (en) | 2024-09-09 | 2024-09-09 | Injection mold of automobile wheel arch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202422199540.9U CN222972700U (en) | 2024-09-09 | 2024-09-09 | Injection mold of automobile wheel arch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222972700U true CN222972700U (en) | 2025-06-13 |
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ID=95971483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202422199540.9U Active CN222972700U (en) | 2024-09-09 | 2024-09-09 | Injection mold of automobile wheel arch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222972700U (en) |
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- 2024-09-09 CN CN202422199540.9U patent/CN222972700U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A injection mold for a car fender Granted publication date: 20250613 Pledgee: Ningbo Ninghai Sub branch of Zhejiang Tailong Commercial Bank Co.,Ltd. Pledgor: NINGBO BAILI MOLDING Co.,Ltd. Registration number: Y2025980040053 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |