CN219028370U - Ejection structure for positioning ribs on product - Google Patents
Ejection structure for positioning ribs on product Download PDFInfo
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- CN219028370U CN219028370U CN202223600318.2U CN202223600318U CN219028370U CN 219028370 U CN219028370 U CN 219028370U CN 202223600318 U CN202223600318 U CN 202223600318U CN 219028370 U CN219028370 U CN 219028370U
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Abstract
The utility model discloses an ejection structure for positioning ribs on a product, which comprises a bottom plate, an ejector plate, a plurality of ejector rods arranged on the ejector plate and an air-ejection structure arranged in a mold core, wherein two groups of air-ejection structures are arranged opposite to one positioning rib on the product, each group of air-ejection structures comprises an air-ejection head, an air-charging pipeline and a positioning base, the air-charging pipeline passes through the positioning base and is arranged in the mold core, one end of the air-charging pipeline is communicated with an air inlet hole of the air-ejection head, and the other end of the air-charging pipeline extends out of the side wall of the mold core; the positioning base is arranged on the lower surface of the mold core. The upper end of the ejector rod sequentially passes through the ejector plate and the mold core from bottom to top to be positioned in the product forming area, abuts against the side of the positioning rib on the product, and forms a triangular area with ejection positions of the two groups of air ejection structures. The utility model has simple structure, convenient use and small size, utilizes the air-jacking structure to assist the ejector rod to finish the ejection work of the positioning ribs in the product, effectively solves the problem of product jacking, ensures the appearance of the product and improves the quality of the whole product.
Description
Technical Field
The utility model relates to the technical field of injection molds, in particular to an ejection structure for positioning ribs on a product.
Background
With the rapid development of the plastic industry, various tools and products used in daily production and life, such as ships, automobiles, screws, buttons and shells of various household appliances, are not closely related to plastic products. Injection molds are important process equipment for producing various plastic industrial products, and are also tools for endowing plastic products with complete structures and precise dimensions. Injection molding is a processing method used in mass production of parts with complex shapes; specifically, heated and melted plastic is injected into a die cavity formed by buckling a movable die and a fixed die through an injection molding machine under high pressure, and a formed product is obtained after cooling and solidification. When the shell with large forming area and deep cavity and thin wall is produced, the positioning ribs are always arranged on the B surface of the product, the wall thickness of the large surface of the product at the moment is only 2.2 mm, the ejection acting force is large during demolding, the product ejection is easy to generate, the surface of the product is damaged, and the product is pulled and deformed, so that the quality of the whole product is influenced.
Disclosure of Invention
The utility model aims to solve the defects of the prior art and provides an ejection structure for positioning ribs on a product.
In order to solve the technical problems, the utility model adopts the following technical scheme: the ejection structure comprises a bottom plate, an ejector plate, a plurality of ejector rods and an air-ejection structure, wherein the ejector rods are opposite to the positioning ribs on the products, two groups of air-ejection structures are opposite to the positioning ribs on one product and are arranged in a mold core, the two groups of air-ejection structures comprise air-ejection heads, corresponding air-charging pipelines and positioning bases, and the top ends of the air-ejection heads are level with the surface of a product forming area on the mold core; the air charging pipeline penetrates through the positioning base and is arranged in the mold core, one end of the air charging pipeline is communicated with the air inlet of the air top, and the other end of the air charging pipeline extends out of the side wall of the mold core and is provided with an air charging port, and is externally connected with high-pressure air; the positioning base is fixedly arranged on the lower surface of the mold core; the bottom plate sets up in the below of mould core, is provided with the ejector pin board between the two, the lower extreme of ejector pin is installed on the ejector pin board, and its upper end passes ejector pin board upper surface, mould core is located the product shaping district, supports the last location muscle side of product.
Further, in the two groups of air-ejection structures, the ejection position of the air-ejection head and the ejection position of the upper end of the ejector rod form a triangle, and the positioning ribs on the product are positioned in the triangle area.
Further, the ejector pin plate comprises an ejector pin bottom plate and an ejector pin panel, wherein the ejector pin bottom plate is fixed on the lower surface of the ejector pin panel, and a groove is formed in the upper surface of the ejector pin bottom plate, which corresponds to the ejector pin setting position; the lower half part of the ejector rod is provided with a limiting block which is clamped in a groove corresponding to the ejector pin bottom plate from bottom to top.
Further, an inward sliding groove is formed in one side of the lower half part of the ejector rod, and a limiting block is sleeved at the sliding groove of the ejector rod; and an upper ejector block is fixedly arranged at the upper end of the ejector rod.
Further, in the air-cap structure, the air-cap comprises a sleeve, a cap core, a spring and a cap block, wherein the sleeve is arranged in the mold core, and a stepped through groove is formed in the inner side of the sleeve; the top core is slidably arranged in the sleeve, a stop protrusion is arranged at the lower end of the top core, a spring is sleeved outside the top core, one end of the spring abuts against the stop protrusion of the top core, and the other end of the spring abuts against the stepped through groove of the sleeve; the upper end of the top core is fixedly provided with a top block, the top block is arranged outside the upper end of the sleeve, and the upper top surface of the top block is propped against the inner side surface of the product; the lower end of the sleeve is provided with an air inlet.
Further, the air charging pipeline is made of hard materials.
Further, the positioning base is detachably connected with the air charging pipeline; the positioning base is detachably fixed on the lower surface of the mold core through countersunk bolts.
Compared with the prior art, the utility model has the following beneficial effects: the utility model has simple structure, convenient use and small size, and the ejector rod is assisted to finish the ejection work of the positioning ribs in the product by embedding the air-ejecting structure into the air holes reserved in the mold core, thereby effectively solving the problem of product ejection, ensuring the appearance of the product and improving the quality of the whole product.
Drawings
FIG. 1 is a view showing the structure of the B-side of a molded product;
FIG. 2 is a diagram illustrating an exemplary assembly relationship of one of the ejector pins according to the present utility model;
FIG. 3 is an enlarged view of the location rib area in the product forming area on the mold core of the present utility model;
FIG. 4 is a side wall orientation view of a mold core in the present utility model;
FIG. 5 is an internal perspective view of a mold core (gas cap construction part) of the present utility model;
FIG. 6 is a schematic view of the ejector rod according to the present utility model;
in the figure: 1. the device comprises a bottom plate, 2, an ejector plate, 3, an ejector rod, 4, an air top, 5, an air pipeline, 6, an air charging port, 7, a positioning base, 8, an upper ejector block, 9, a limiting block, 10, a mold core, 11, a product, 12, a positioning rib, 13, a sliding groove, 14 and a clamp spring.
Detailed Description
It should be noted that, in the description of the present utility model, the terms such as "upper", "lower", "left", "right", "front", "rear", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, but relational terms are merely determined for convenience in describing the structural relationships of the components in the present utility model, and do not particularly denote that any one of the components of the present utility model must have a specific orientation, be configured and operated in a specific orientation, and should not be construed as limiting the present utility model.
It should be further noted that, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and the like are to be construed broadly and include, for example, either fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
The following describes the embodiments of the present utility model in further detail with reference to the accompanying drawings:
in order to avoid the problem that the product 11 is easy to produce product blank at the positioning ribs 12 in a traditional ejection mode when the product 11 is ejected, and the appearance and quality of the product 11 are affected, the utility model provides an ejection structure for the positioning ribs on the product, which is shown in fig. 2-4, and comprises a bottom plate 1, an ejector plate 2, a plurality of ejector rods 3 opposite to the positioning ribs 12 on the product 11 and a gas cap structure, wherein two groups of gas cap structures opposite to the positioning ribs 12 on the product 11 are arranged in the mold core 10 in an embedded manner, and the top end of the gas cap structure is flush with the upper surface of the mold core 10. As shown in fig. 5, each group of air-cap structures comprises an air-cap head 4, an air charging pipeline 5 and a positioning base 7 corresponding to the air-cap head 4; the air head 4 comprises a sleeve, a top core, a spring and a top block, wherein the sleeve is arranged in a reserved air hole of the mold core 10, the inside of the sleeve is hollow, and a stepped through groove is formed in the inner side of the sleeve; the top core is arranged in the sleeve in a sliding manner up and down, the upper part of the top core is wide and the lower part of the top core is narrow, and the lower end of the top core is provided with a stop protrusion; the spring is sleeved outside the top core, one end of the spring is propped against the stop protrusion at the lower end of the top core, the other end of the spring is propped against the stepped through groove of the sleeve, and the upward stretching distance of the top core is limited by the compression of the spring; a jacking block is fixedly arranged at the upper end of the jacking core, the jacking block is arranged outside the upper end of the sleeve, the upper top surface of the jacking block is flush with a product forming area of the mold core 10, and the jacking block butts against the B surface of the product 11; the lower end of the sleeve is also provided with an air inlet hole. The air charging pipeline 5 passes through the corresponding positioning base 7 and is arranged in the mold core 10, and avoids a water injection pipeline in the mold core 10, one end of the air charging pipeline is communicated with an air inlet hole of the air head 4, the other end of the air charging pipeline extends out of one side wall of the mold core 10, an air charging port 6 is arranged outside the air charging port, and the outer end of the air charging port 6 is externally connected with high-pressure air; the air charging pipe 5 is made of hard material, such as plastic or metal. The positioning base 7 is arranged on the lower surface of the mold core 10 through countersunk bolts and is detachably arranged, so that the maintenance, the disassembly and the replacement of the later air head 4 are facilitated; meanwhile, the positioning base 7 is detachably connected with the connected inflation pipeline 5, so that the inflation pipeline 5 is convenient to change the road.
The bottom plate 1 is arranged below the mold core 10 and is arranged at a distance from the mold core 10; the ejector pin plate 2 is arranged between the bottom plate 1 and the mold core 10 and comprises an ejector pin panel and an ejector pin bottom plate, and the ejector pin bottom plate is fixedly arranged on the lower surface of the ejector pin panel. The lower extreme of ejector pin 3 is installed on the thimble bottom plate, and its upper end passes thimble panel, mould core 10 in proper order from the bottom up and is located the product shaping district, and referring to the fig. 6 and show, the upper end fixed mounting of ejector pin 3 has an upper ejector block 8, and the top surface of upper ejector block 8 is parallel and level with the product shaping district surface, supports the side of location muscle 12 on product 11. An inward-sinking sliding groove 13 is further formed in one side of the lower half part of the ejector rod 3, the sliding groove corresponds to the matching position between the ejector rod 3 and the ejector plate 2, and a groove is formed in the upper surface of the ejector plate, corresponding to the mounting position of the ejector rod 3; the outside cover of sliding tray 13 is equipped with stopper 9, from top to bottom block in corresponding recess, and its up end supports in the lower surface of thimble panel, and the below utilizes jump ring 14 to restrict, thereby drives ejection and the withdrawal of ejector pin 3 through the up-and-down motion of thimble board 2.
In the two groups of air-ejection structures, the ejection position of the air-ejection head 4 and the ejection position of the upper ejection block 8 at the upper end of the ejector rod 3 form a triangle, and the positioning ribs 12 on the product 11 are positioned in the triangle area.
The specific use process is as follows: when the product 11 is molded, the mold is opened, the ejector plate 2 moves upwards under the action of a driving oil cylinder of the ejector plate, the limiting block 9 is driven to move upwards synchronously, and when the limiting block 9 clamps the upper end of the sliding groove 13, the ejector rod 3 is driven to slide upwards along the inner sleeve of the mold core 10, so that the upper ejector block 8 protrudes out of the mold core 10; when the oil cylinder instantaneously moves, air is filled from the air filling opening 6 to the inside, under the action of high air pressure, the top block arranged on the upper part of the air top head 4 in the air top structure protrudes upwards to give the upward lifting force to the rib position, so that the rib position is prevented from being broken; the upper ejector block 8 at the upper end of the ejector rod 3 acts on the periphery of the positioning rib 12 together to eject the product 11. After the product 11 is taken out, the ejector plate 2 moves downwards to return, the ejector rod 3 falls back, and the upper ejector block 8 is reset; simultaneously, the inflation is stopped, the ejection core in the air ejection head 4 drives the ejection block to reset under the action of the spring, and the mold is closed again for injection molding.
The air-cap structure can be installed by adopting standard components in the prior art; the related technical characteristics which are not described in the technical scheme of the utility model can be realized by adopting or referring to the prior art.
It should be understood that the above description is not intended to limit the utility model to the particular embodiments disclosed, but to limit the utility model to the particular embodiments disclosed, and that the utility model is not limited to the particular embodiments disclosed, but is intended to cover modifications, adaptations, additions and alternatives falling within the spirit and scope of the utility model.
Claims (7)
1. A ejecting structure for locating rib on product, its characterized in that: the device comprises a bottom plate, an ejector plate, a plurality of ejector rods and an air-ejection structure, wherein the ejector rods are opposite to positioning ribs on a product, two groups of air-ejection structures are opposite to the positioning ribs on a product, and are arranged in a mold core, and the two groups of air-ejection structures comprise an air-ejection head, a corresponding air charging pipeline and a positioning base, wherein the top end of the air-ejection head is level with the surface of a product forming area on the mold core; the air charging pipeline penetrates through the positioning base and is arranged in the mold core, one end of the air charging pipeline is communicated with the air inlet of the air top, and the other end of the air charging pipeline extends out of the side wall of the mold core and is provided with an air charging port, and is externally connected with high-pressure air; the positioning base is fixedly arranged on the lower surface of the mold core; the bottom plate sets up in the below of mould core, is provided with the ejector pin board between the two, the lower extreme of ejector pin is installed on the ejector pin board, and its upper end passes ejector pin board upper surface, mould core is located the product shaping district, supports the last location muscle side of product.
2. An ejector structure for a positioning bar on a product as defined in claim 1, wherein: in the two groups of air-ejection structures, the ejection position of the air-ejection head and the ejection position of the upper end of the ejector rod form a triangle, and the positioning ribs on the product are positioned in the triangle area.
3. An ejector structure for a positioning bar on a product as defined in claim 1, wherein: the ejector pin plate comprises an ejector pin bottom plate and an ejector pin panel, the ejector pin bottom plate is fixed on the lower surface of the ejector pin panel, and a groove is formed in the upper surface of the ejector pin bottom plate, corresponding to the ejector pin, at the position where the ejector pin is arranged; the lower half part of the ejector rod is provided with a limiting block which is clamped in a groove corresponding to the ejector pin bottom plate from bottom to top.
4. A push-out structure for a positioning rib on a product according to claim 3, wherein: one side of the lower half part of the ejector rod is provided with an inward-sinking sliding groove, and a limiting block is sleeved at the sliding groove of the ejector rod; and an upper ejector block is fixedly arranged at the upper end of the ejector rod.
5. An ejector structure for a positioning bar on a product as defined in claim 1, wherein: the air top head in the air top structure comprises a sleeve, a top core, a spring and a top block, wherein the sleeve is arranged in the mold core, and a stepped through groove is formed in the inner side of the sleeve; the top core is slidably arranged in the sleeve, a stop protrusion is arranged at the lower end of the top core, a spring is sleeved outside the top core, one end of the spring abuts against the stop protrusion of the top core, and the other end of the spring abuts against the stepped through groove of the sleeve; the upper end of the top core is fixedly provided with a top block, the top block is arranged outside the upper end of the sleeve, and the upper top surface of the top block is propped against the inner side surface of the product; the lower end of the sleeve is provided with an air inlet.
6. An ejector structure for a positioning bar on a product as defined in claim 1, wherein: the air charging pipeline is made of hard materials.
7. An ejector structure for a positioning bar on a product as defined in claim 1, wherein: the positioning base is detachably connected with the inflation pipeline; the positioning base is detachably fixed on the lower surface of the mold core through countersunk bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223600318.2U CN219028370U (en) | 2022-12-30 | 2022-12-30 | Ejection structure for positioning ribs on product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223600318.2U CN219028370U (en) | 2022-12-30 | 2022-12-30 | Ejection structure for positioning ribs on product |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219028370U true CN219028370U (en) | 2023-05-16 |
Family
ID=86313303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223600318.2U Active CN219028370U (en) | 2022-12-30 | 2022-12-30 | Ejection structure for positioning ribs on product |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219028370U (en) |
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2022
- 2022-12-30 CN CN202223600318.2U patent/CN219028370U/en active Active
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