A dual-channel injection mold

Abstract

This invention provides a dual-channel injection mold. The upper and lower mold cavities interlock to form a mold cavity assembly. An annular mold is placed in a placement groove and combined with the mold cavity to form a mold chamber. An electric cylinder drives the front annular mold to advance. The feed inlet connects to both mold cavities via two feed channels, enabling simultaneous injection. The ejection system uses springs and a third support column to lift the upper pressure plate to assist demolding. The upper and lower mold cavities are each equipped with independent venting holes and channels to discharge gas. The rear connection port of the annular mold, combined with a moving groove and connecting groove, facilitates pull-out demolding. A pressure block fixes the feed channel. An annular column reinforces the support column. This mold solves the problems of low efficiency, poor venting, inconvenient demolding, and poor stability of traditional injection molds, improving production efficiency, product quality, and automation level. It is suitable for mass production of annular or complex-shaped plastic products, offering significant economic benefits.

Description

Technical Field

[0001] This utility model belongs to the field of injection mold technology, and more specifically, it relates to a dual-channel injection mold. Background Technology

[0002] Injection molds are commonly used molding equipment in the production of plastic products. They are widely used in the automotive, electronics, and home appliance industries by injecting molten plastic into a mold cavity for cooling and shaping. Traditional injection molds typically employ a single-channel design, meaning they have only one feed channel and mold cavity assembly, resulting in low production efficiency and an inability to meet the demands of mass production. Furthermore, existing injection molds often rely on simple venting holes for venting, which can easily lead to gas retention, forming bubbles or defects and affecting product quality. In addition, the demolding process often relies on manual operation or simple machinery, especially in the molding of ring-shaped or complex-shaped products, making demolding inconvenient and prone to product damage or mold wear. The support structure design is also relatively simple, lacking stability and susceptible to displacement or deformation during high-pressure injection molding. These problems limit the overall performance and applicability of injection molds, necessitating an improved mold design to enhance efficiency and reliability. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a dual-channel injection mold.

[0004] The purpose and effect of this utility model of a dual-channel injection mold are achieved by the following specific technical means:

[0005] A dual-channel injection mold includes a supporting body. The supporting body includes a base plate at the bottom; a support plate is provided on the upper side of the base plate; a first placement plate and a second placement plate are stacked on the upper part of the base plate and inside the support plate; a lower pressure plate is provided on the upper part of the support plate; an upper pressure plate is stacked on the upper part of the lower pressure plate; a sandwich panel is stacked on the upper part of the upper pressure plate; and a top cover plate is stacked on the upper part of the sandwich panel.

[0006] The main support body has a first support column at each of its four corners; the first support column is sequentially installed through the upper cover plate, the interlayer plate, the upper pressure plate, the lower pressure plate and the support plate;

[0007] The upper pressure plate has an upper mold cavity at its bottom; the lower pressure plate has a lower mold cavity at its upper part; the upper mold cavity can be fastened to the lower mold cavity; the upper mold cavity and the lower mold cavity are configured as two sets; an upper mold is provided in the upper mold cavity; a lower mold is provided in the lower mold cavity;

[0008] A first placement groove is provided on the outer side of the upper mold cavity; a second placement groove is provided on the outer side of the lower mold cavity;

[0009] The first placement slot engages with the second placement slot; there are three sets of the first and second placement slots, located on the front, left, and rear sides of the upper and lower mold cavities, respectively;

[0010] An annular mold; the annular mold is disposed in the first placement groove and the second placement groove; three sets of annular molds are provided; the annular mold, the upper and lower molds, and the lower-lower mold are combined to form a model cavity;

[0011] An electric cylinder is provided on the front side of the support body; the output end of the electric cylinder is connected to the annular mold located on the front side;

[0012] The upper cover plate is provided with a feeding port in the middle; a feeding channel is provided at the bottom of the feeding port; the feeding channel passes through the upper cover plate and the sandwich plate, and is divided into two paths in the upper pressure plate, which are connected to the upper mold cavities on both sides in sequence.

[0013] Ejection system; the ejection system is located on the upper part of the first placement plate and is used to eject the model.

[0014] Furthermore, a second support column is provided on the base plate; the second support column passes through the first placement plate and the second placement plate and contacts the lower pressure plate.

[0015] Furthermore, the top of the upper mold is provided with a first vent hole; the first vent hole is connected to a first vent channel; the first vent channel is located inside the upper pressure plate and communicates with the outside.

[0016] Furthermore, the annular mold includes a base and an annular mold cavity connected to the front side of the base; the rear side of the base is provided with a connection port for feeding in or pulling out the annular mold.

[0017] Furthermore, each of the second placement slots is provided with a movable slot on its rear side for pulling out the connecting seat for demolding.

[0018] Furthermore, a connecting groove is provided on the rear side of the movable groove located at the rear; the connecting groove corresponds to the connecting port.

[0019] Furthermore, a second vent hole is provided at the bottom of the lower mold; the second vent hole is connected to a second vent channel; the second vent channel is located inside the lower pressure plate and communicates with the outside.

[0020] Furthermore, a pressure block is provided at the top of the upper cover plate; a connecting column is provided at the bottom of the pressure block; the connecting column penetrates the upper cover plate and the interlayer plate, and is pressed against the upper part of the feeding channel.

[0021] Furthermore, the upper cover plate, sandwich plate, upper pressure plate, lower pressure plate, and support plate are all provided with annular cylindrical tubes at their contact points with the first support column.

[0022] Furthermore, the ejection system includes springs disposed around the first placement plate; a third support column is disposed inside the springs; the springs are located between the first placement plate and the lower pressure plate; the third support column passes through the lower pressure plate and contacts the bottom of the upper pressure plate to lift the upper pressure plate.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] This utility model provides a dual-channel injection mold that, by setting up two feed inlets to connect two sets of mold cavities, enables the simultaneous molding of two products, improving production efficiency and solving the problem of low output of traditional single-channel molds. Simultaneously, the upper and lower mold cavities are respectively equipped with a first vent and a second vent, connected to the outside through independent venting channels, effectively removing gas during the injection process, reducing bubbles and defects, and improving product quality. The annular mold design, combined with electric cylinder drive and moving and connecting groove structures, facilitates automatic pull-out and demolding, simplifying the operation process and reducing the risk of product damage. The ejection system uses a spring and third support column mechanism to automatically lift the upper pressure plate, achieving rapid separation of the mold cavity and improving the level of automation. Furthermore, the multi-layer support body, combined with the first support column, the second support column, and the annular cylinder, ensures the stability and durability of the mold under high pressure, optimizing the overall injection process. It is suitable for the production of annular or complex-shaped products, enhancing the practicality and economy of the mold. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of this utility model;

[0026] Figure 2 This is a rear side view of the present invention;

[0027] Figure 3 This is a schematic diagram of the internal structure of this utility model;

[0028] Figure 4 This is a schematic diagram of the front interior of this utility model;

[0029] Figure 5 This is a schematic diagram of the upper pressure plate of this utility model;

[0030] Figure 6 This is a schematic diagram of the lower pressure plate of this utility model;

[0031] Figure 7 This is a schematic diagram of the upper mold of this utility model;

[0032] Figure 8 This is a schematic diagram of the lower mold of this utility model;

[0033] Figure 9 This is a schematic diagram of the ring mold of this utility model;

[0034] Figure 10 This is a schematic diagram of the model of this utility model.

[0035] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0036] 1. Support body; 11. Top cover plate; 111. Feed inlet; 112. Feeding channel; 113. Pressure block; 114. Connecting column; 12. Sandwich plate; 13. Upper pressure plate; 131. Upper mold cavity; 132. First placement slot; 133. First vent hole; 134. First venting channel; 14. Lower pressure plate; 141. Lower mold cavity; 142. Second placement slot; 143. Moving slot; 144. Connecting slot; 145. Second vent hole; 146. Second venting channel; 15. Support plate; 16. Base plate; 161. Second support column; 17. First placement plate; 18. Second placement plate; 19. First support column; 191. Annular column; 2. Annular mold; 21. Base; 211. Connecting port; 22. Annular mold cavity; 3. Electric cylinder; 4. Ejection system; 41. Spring; 42. Third support column. Detailed Implementation

[0037] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0038] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0039] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0040] Example:

[0041] As attached Figure 1 To be continued Figure 10 As shown:

[0042] A dual-channel injection mold includes a support body 1. The support body 1 includes a base plate 16 at the bottom. A support plate 15 is provided on the upper side of the base plate 16. A first placement plate 17 and a second placement plate 18 are stacked on the upper part of the base plate 16 and inside the support plate 15. A lower pressure plate 14 is provided on the upper part of the support plate 15. An upper pressure plate 13 is stacked on the lower pressure plate 14. A sandwich panel 12 is stacked on the upper pressure plate 13. An upper cover plate 11 is stacked on the sandwich panel 12.

[0043] The support body 1 has a first support column 19 at each of its four corners; the first support column 19 is sequentially installed through the upper cover plate 11, the interlayer plate 12, the upper pressure plate 13, the lower pressure plate 14 and the support plate 15.

[0044] The upper pressure plate 13 has an upper mold cavity 131 at its bottom; the lower pressure plate 14 has a lower mold cavity 141 at its upper part; the upper mold cavity 131 can be fastened to the lower mold cavity 141; the upper mold cavity 131 and the lower mold cavity 141 are configured as two sets; an upper mold is provided in the upper mold cavity 131; a lower mold is provided in the lower mold cavity 141;

[0045] A first placement groove 132 is also provided on the outer side of the upper mold cavity 131; a second placement groove 142 is provided on the outer side of the lower mold cavity 141;

[0046] The first placement groove 132 opening is engaged with the second placement groove 142; the first placement groove 132 opening and the second placement groove 142 opening are provided in three sets, respectively located on the front side, left side and rear side of the upper mold cavity 131 and the lower mold cavity 141;

[0047] Annular mold 2; the annular mold 2 is disposed in the first placement groove 132 and the second placement groove 142; three sets of annular mold 2 are provided; the annular mold 2, the upper and lower molds and the lower lower mold are combined to form a model cavity;

[0048] An electric cylinder 3 is provided on the front side of the support body 1; the output end of the electric cylinder 3 is connected to the annular mold 2 located on the front side;

[0049] The upper cover plate 11 is provided with a feed inlet 111 in the middle; the bottom of the feed inlet 111 is connected to a feeding channel 112; the feeding channel 112 passes through the upper cover plate 11 and the sandwich plate 12, and is divided into two paths in the upper pressure plate 13, which are connected to the upper mold cavities 131 located on both sides in sequence.

[0050] Ejection system 4; The ejection system 4 is located on the upper part of the first placement plate 17 and is used to eject the model.

[0051] This structure enables simultaneous injection molding through dual channels, improving production efficiency; the ring mold 2 and the mold cavity combine to form a mold cavity, facilitating the molding of ring-shaped products; the electric cylinder 3 drives the ring mold 2 forward, enhancing automation; the ejection system 4 assists in demolding, simplifying the operation process; the overall support body 1 ensures stability and reduces the risk of deformation under high pressure, thereby improving the reliability of the mold and the quality of the products.

[0052] A second support column 161 is provided on the base plate 16; the second support column 161 passes through the first placement plate 17 and the second placement plate 18 and contacts the lower pressure plate 14. This design enhances the support strength of the lower part of the mold, prevents the lower pressure plate 14 from shifting or deforming during high injection pressure or repeated opening and closing, improves the overall stability and durability of the mold, extends its service life, and ensures the alignment accuracy of the mold cavity, reducing the dimensional deviation of the product.

[0053] The upper mold is provided with a first vent hole 133 at its top; the first vent hole 133 is connected to a first vent channel 134; the first vent channel 134 is located inside the upper pressure plate 13 and communicates with the outside. This venting system effectively discharges air and volatile gases from the upper mold cavity 131, preventing air bubbles or voids caused by uneven filling of the injection molding material, improving the internal density and surface smoothness of the product, and enhancing product quality and yield.

[0054] The annular mold 2 includes a base 21 and an annular mold cavity 22 connected to the front side of the base 21; a connection port 211 is provided on the rear side of the base 21 for feeding or pulling out the annular mold 2. This structure facilitates the installation and disassembly of the annular mold 2, adapts to the molding requirements of complex annular products, and enables automated operation through the connection port 211 in conjunction with an external drive, reducing the complexity and time cost of manual adjustment and improving production efficiency.

[0055] Each of the second placement slots 142 is provided with a movable slot 143 on its rear side for pulling out the connecting seat for demolding. The movable slot 143 provides a dedicated path for pulling out the annular mold 2, ensuring a smooth demolding process, avoiding product jamming or deformation, simplifying the demolding operation, reducing the risk of product damage, and improving the practicality and continuous production capacity of the mold.

[0056] A connecting groove 144 is provided on the rear side of the moving groove 143 located at the rear; the connecting groove 144 corresponds to the connecting port 211. The connecting groove 144 optimizes the positioning and connection of the annular mold 2, facilitates the access of external tools or robotic arms, realizes precise pull-out demolding, further improves the accuracy and efficiency of automated demolding, and reduces operational errors and product defect rates.

[0057] The bottom of the lower mold is provided with a second vent hole 145; the second vent hole 145 is connected to a second vent channel 146; the second vent channel 146 is located inside the lower pressure plate 14 and communicates with the outside. This venting system provides independent venting for the lower mold cavity 141, supplementing the venting function of the upper mold cavity 131, ensuring that all gas in the mold cavity is completely discharged, reducing pressure unevenness and material flow obstruction during injection molding, improving the uniformity and strength of the product, and optimizing the molding quality.

[0058] A pressure block 113 is provided at the top of the upper cover plate 11; a connecting post 114 is provided at the bottom of the pressure block 113; the connecting post 114 penetrates the upper cover plate 11 and the sandwich plate 12, and is pressed against the upper part of the feeding channel 112. This design enhances the sealing and fixation of the feeding channel 112, prevents leakage of molten material under high pressure or channel deformation, ensures uniform distribution of material in the dual mold cavities, improves injection molding stability and product consistency, and reduces waste and cleaning requirements.

[0059] The upper cover plate 11, sandwich plate 12, upper pressure plate 13, lower pressure plate 14, and support plate 15 are all provided with annular cylindrical tubes 191 at their contact points with the first support column 19. These annular cylindrical tubes 191 enhance the bonding strength and guiding accuracy between the plates and the support column, prevent slippage or loosening, improve the stability and wear resistance of the mold during opening and closing, extend the service life of the components, and ensure structural integrity under long-term use.

[0060] The ejection system 4 includes springs 41 arranged around the first placement plate 17; a third support column 42 is disposed within the springs 41; the springs 41 are located between the first placement plate 17 and the lower pressure plate 14; the third support column 42 penetrates the lower pressure plate 14 and contacts the bottom of the upper pressure plate 13 to lift the upper pressure plate 13. This elastic ejection mechanism realizes automatic separation of the upper pressure plate 13 and the lower pressure plate 14, shortens the mold opening time, improves production cycle efficiency, and at the same time buffers impact force, protects the mold cavity surface, reduces wear and the risk of product sticking to the mold, and improves the overall automation level and operational safety.

[0061] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A dual-channel injection mold, characterized in that: Support body (1); the support body (1) includes a bottom plate (16) located at the bottom; a support plate (15) is provided on the upper side of the bottom plate (16); a first placement plate (17) and a second placement plate (18) are stacked on the upper part of the bottom plate (16) and located inside the support plate (15); a lower pressure plate (14) is provided on the upper part of the support plate (15); an upper pressure plate (13) is stacked on the upper part of the lower pressure plate (14); a sandwich panel (12) is stacked on the upper part of the upper pressure plate (13); and an upper cover plate (11) is stacked on the upper part of the sandwich panel (12). The supporting body (1) has a first support column (19) at each of its four corners; the first support column (19) is sequentially installed in the upper cover plate (11), the interlayer plate (12), the upper pressure plate (13), the lower pressure plate (14) and the support plate (15); The upper pressure plate (13) is provided with an upper mold cavity (131) at its bottom; the lower pressure plate (14) is provided with a lower mold cavity (141) at its upper part; the upper mold cavity (131) can be fastened to the lower mold cavity (141); the upper mold cavity (131) and the lower mold cavity (141) are provided as two sets; an upper mold is provided in the upper mold cavity (131); a lower mold is provided in the lower mold cavity (141); The upper mold cavity (131) is also provided with a first placement groove (132) on the outside; the lower mold cavity (141) is provided with a second placement groove (142) on the outside. The first placement groove (132) is engaged with the second placement groove (142); the first placement groove (132) and the second placement groove (142) are provided in three sets, located on the front, left and rear sides of the upper mold cavity (131) and the lower mold cavity (141) respectively; Annular mold (2); the annular mold (2) is set in the first placement groove (132) and the second placement groove (142); the annular mold (2) is provided in three sets; the annular mold (2) and the upper and lower molds and the lower lower mold are combined to form a model cavity; An electric cylinder (3) is provided on the front side of the support body (1); the output end of the electric cylinder (3) is connected to the annular mold (2) located on the front side; The upper cover plate (11) is provided with a feed inlet (111) in the middle; the bottom of the feed inlet (111) is connected to a feeding channel (112); the feeding channel (112) passes through the upper cover plate (11) and the sandwich plate (12), and is divided into two paths in the upper pressure plate (13), which are connected to the upper mold cavities (131) located on both sides in sequence. Ejection system (4); The ejection system (4) is located on the upper part of the first placement plate (17) and is used to eject the model.

2. The dual-channel injection mold as described in claim 1, characterized in that: A second support column (161) is provided on the base plate (16); the second support column (161) passes through the first placement plate (17) and the second placement plate (18) and contacts the lower pressure plate (14).

3. A dual-channel injection mold as described in claim 1, characterized in that: The upper mold is provided with a first vent hole (133) at the top; the first vent hole (133) is connected to a first vent channel (134); the first vent channel (134) is located inside the upper pressure plate (13) and is connected to the outside.

4. A dual-channel injection mold as described in claim 1, characterized in that: The annular mold (2) includes a base (21) and an annular mold cavity (22) connected to the front side of the base (21); a connection port (211) is provided on the rear side of the base (21) for feeding in or pulling out the annular mold (2).

5. A dual-channel injection mold as described in claim 4, characterized in that: The second placement groove (142) is provided with a moving groove (143) on the rear side for pulling out the connecting seat for demolding.

6. A dual-channel injection mold as described in claim 5, characterized in that: The rear side of the movable groove (143) located at the rear is provided with a connecting groove (144); the connecting groove (144) corresponds to the connecting port (211).

7. A dual-channel injection mold as described in claim 1, characterized in that: The bottom of the lower mold is provided with a second vent hole (145); the second vent hole (145) is connected to a second vent channel (146); the second vent channel (146) is located inside the lower pressure plate (14) and is connected to the outside.

8. A dual-channel injection mold as described in claim 1, characterized in that: The top of the upper cover plate (11) is provided with a pressure block (113); the bottom of the pressure block (113) is provided with a connecting column (114); the connecting column (114) passes through the upper cover plate (11) and the sandwich plate (12) and is pressed onto the upper part of the feeding channel (112).

9. A dual-channel injection mold as described in claim 1, characterized in that: The upper cover plate (11), the interlayer plate (12), the upper pressure plate (13), the lower pressure plate (14), and the support plate (15) are all provided with annular cylindrical tubes (191) at their contact points with the first support column (19).

10. A dual-channel injection mold as described in claim 1, characterized in that: The ejection system (4) includes springs (41) arranged around the first placement plate (17); a third support column (42) is arranged inside the springs (41); the springs (41) are located between the first placement plate (17) and the lower pressure plate (14); the third support column (42) passes through the lower pressure plate (14) and contacts the bottom of the upper pressure plate (13) to lift the upper pressure plate (13).

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