A forming mold and a sealing ring injection molding device having the forming mold

Abstract

The present invention relates to the field of injection molding technology, and specifically discloses a molding die and a sealing ring injection molding device having the molding die. The molding die includes an upper mold and a lower mold, wherein a plurality of rear mold inserts are provided inside the upper end of the lower mold, a top sleeve and a push block are provided on the upper part of the rear mold insert, the push block is connected to the upper end of the first ejector pin, and the top sleeve is connected to the upper end of the second ejector pin. A plurality of injection molding cavities for injecting plastic material input by a sprue sleeve are provided inside the upper mold on the side facing the lower mold, and the plastic material in the injection molding cavity forms a sealing ring product after cooling after injection molding. The present invention injects plastic material into the injection molding cavity through the sprue sleeve. Due to the provision of the top sleeve, a groove with a height difference is formed at the edge. Through this height difference, when the second ejector pin drives the top sleeve to push up, the material handle and the sealing ring product will be cut off and separated, thereby solving the problem that the existing mold needs to remove the waste material after demolding when producing the sealing ring, and has broad market prospects.

Description

Technical Field

[0001] The present invention belongs to the technical field of injection molding, and in particular relates to a molding die and a sealing ring injection molding device having the molding die. Background Art

[0002] Injection molding technology is widely used in various fields such as electromechanics, automobiles, transportation, building materials, packaging, and daily life due to its rapid prototyping and complex molding features. Currently, injection molding machines use plastics to inject into molds, which are then cooled and molded into various shapes.

[0003] Among them, the mold, as the key equipment of the injection molding process, is usually composed of various parts. It must not only meet the processing accuracy requirements of each product, but also be able to be made into various complex shapes. Therefore, for different types of products, corresponding molds are usually required. Because the existing battery sealing ring products are very small and thin, it is usually necessary to cut off the waste after demolding during the injection molding process. However, the above-mentioned existing technical solutions have the following defects: cutting off the waste after demolding will undoubtedly increase the operation process, and usually the cutting is done manually, which reduces work efficiency. Summary of the Invention

[0004] The purpose of the embodiments of the present invention is to provide a forming mold to solve the problem mentioned in the background art that the existing mold needs to be demoulded and then the waste material needs to be cut off when producing the sealing ring.

[0005] The embodiment of the present invention is implemented as follows: a molding die includes an upper die and a lower die adapted to match the upper die, a plurality of rear die inserts are disposed within the upper end of the lower die, a top sleeve and a push block located above the top sleeve are disposed on the upper portion of the rear die insert, a sprue sleeve for inputting injection molding material is provided at the upper end of the upper die, and the molding die further includes:

[0006] A first ejector pin, the upper end of which is connected to the push block and is used to drive the push block to reciprocate along the axis of the rear mold insert; a plurality of injection molding cavities are provided in the interior of the upper mold on a side facing the lower mold for injecting the injection molding plastic input by the sprue bushing, the injection molding plastic in the injection molding cavity forms a sealing ring product after injection molding and cooling, and the remaining injection molding plastic at the upper end of the sealing ring product forms a material handle; and

[0007] The second ejector rod has an upper end connected to the ejector sleeve and is used to drive the ejector sleeve to move back and forth along the axis of the rear mold insert to cut off the material handle and the sealing ring product.

[0008] Preferably, the top sleeve includes a top sleeve base fixedly mounted on the upper end of the second top rod, a top sleeve body is provided on the top sleeve base, a top sleeve head is mounted on the upper end of the top sleeve body, the diameter of the top sleeve body is larger than the diameter of the top sleeve head, and a top sleeve concave surface is provided on the inner side of the upper end edge of the top sleeve head.

[0009] In another embodiment of the present invention, a sealing ring injection molding device having the molding mold is also provided, and the sealing ring injection molding device also includes an injection molding machine body, and the input end of the injection molding machine body is connected to the gate sleeve to inject the injection material into the injection molding cavity.

[0010] The beneficial effects of the present invention are:

[0011] Compared with the prior art, the molding mold provided by the embodiment of the present invention includes an upper mold and a lower mold, wherein a plurality of rear mold inserts are arranged inside the upper end of the lower mold, a top sleeve and a push block are arranged on the upper part of the rear mold insert, a gate sleeve for inputting injection plastic is opened on the upper end of the upper mold, the push block is connected to the upper end of the first ejector rod, the top sleeve is connected to the upper end of the second ejector rod, and a plurality of injection molding cavities for injecting the injection plastic input by the gate sleeve are opened inside the side of the upper mold facing the lower mold, the injection plastic in the injection molding cavity forms a sealing ring product after injection molding and cooling, and the residual material on the upper end of the sealing ring product The injection plastic forms a material handle; the molding die inputs the injection plastic into the injection molding cavity through the gate sleeve, and the injection plastic in the injection molding cavity forms a sealing ring product after injection molding and cooling, and the remaining injection plastic on the upper end of the sealing ring product forms the material handle; because a top sleeve is provided, a groove with a height difference is formed at the edge. Through this height difference, when the second ejector drives the ejector sleeve to push up, the material handle and the sealing ring product will be cut off and separated, that is, the cutting is completed at the same time as demoulding, which solves the problem of the existing mold having to remove waste material after demoulding when producing sealing rings, thereby improving practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention.

[0013] Figure 1 A schematic structural diagram of a forming mold provided in one embodiment of the present invention.

[0014] Figure 2 A three-dimensional diagram of a forming mold provided in accordance with an embodiment of the present invention.

[0015] Figure 3 This is a schematic structural diagram of the lower mold layer, lower mold layer, and lower mold layer three in a molding mold provided by an embodiment of the present invention.

[0016] Figure 4 This is a schematic structural diagram of a material handle provided in one embodiment of the present invention.

[0017] Figure 5 This is a schematic structural diagram of a sealing ring product provided in one embodiment of the present invention.

[0018] Figure 6 This is a schematic structural diagram of the lower mold layer 2 and the lower mold layer 3 in a molding mold provided by one embodiment of the present invention.

[0019] Figure 7 This is a schematic structural diagram of a top sleeve in a forming mold provided by one embodiment of the present invention.

[0020] Figure 8 This is a schematic diagram of the three-dimensional structure of the concave surface of the top sleeve in the molding die provided in one embodiment of the present invention.

[0021] Figure 9 This is a structural schematic diagram of a lower mold layer, a first ejector rod, and a push block in a molding mold provided by one embodiment of the present invention.

[0022] Figure 10 A three-dimensional structural diagram of a sprue sleeve in a molding die provided in another embodiment of the present invention.

[0023] Figure 11 A three-dimensional structural diagram of a stripper plate insert in a molding die provided in another embodiment of the present invention.

[0024] In the figure: 101-rear mold insert; 102-secondary ejector fixing block; 103-secondary ejector rocker; 104-push block; 105-ejector sleeve; 106-cooling water jacket; 107-locking plate; 108-front mold insert; 109-gate insert; 110-first ejector pin; 111-second ejector pin; 112-runner insert; 113-pulling needle; 114-double-section ejector pin; 115-gate sleeve; 116-stripper plate insert; 117-limiting column; 118-material handle; 119-injection cavity; 120-sealing ring product; 121-lower mold layer one; 122-lower mold layer two; 123-lower mold layer three; 124-material head; 1051-ejector sleeve base; 1052-ejector sleeve body; 1053-ejector sleeve head; 1054-top sleeve concave surface. DETAILED DESCRIPTION

[0025] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of this invention.

[0026] In the description of the present invention, it should be understood that, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may also include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," or "above" a second feature may include the first feature being directly above or diagonally above the second feature, or may simply mean that the first feature is at a higher level than the second feature. A first feature being "below," "below," or "below" a second feature may include the first feature being directly below or diagonally below the second feature, or may simply mean that the first feature is at a lower level than the second feature. The above-mentioned orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are provided solely for the purpose of facilitating and simplifying the description of the present invention. Therefore, they should not be construed as limiting the present invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed to indicate or imply relative importance or to implicitly specify the number of the technical features indicated. Therefore, features designated "first," "second," etc., may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0027] The specific implementation of the present invention is described in detail below with reference to specific embodiments.

[0028] like Figure 1-11 FIG. 1 is a structural diagram of a molding die provided by one embodiment of the present invention. The molding die comprises an upper die and a lower die adapted to match the upper die. A plurality of rear mold inserts 101 are provided inside the upper end of the lower die. A top sleeve 105 and a push block 104 located above the top sleeve 105 are provided on the upper portion of the rear mold insert 101. A sprue bushing 115 for inputting injection molding material is provided on the upper end of the upper die. The molding die further comprises:

[0029] A first ejector pin 110, the upper end of which is connected to the push block 104, is used to drive the push block 104 to reciprocate along the axis of the rear mold insert 101; a plurality of injection cavities 119 are defined in the interior of the upper mold on one side facing the lower mold for injecting the injection plastic input by the sprue bushing 115; the injection plastic in the injection cavities 119 forms a sealing ring product 120 after injection molding and cooling, and the remaining injection plastic on the upper end of the sealing ring product 120 forms a material handle 118; and

[0030] The second ejector rod 111 is connected to the ejector sleeve 105 at its upper end and is used to drive the ejector sleeve 105 to move back and forth along the axis of the rear mold insert 101 to cut off the material handle 118 and the sealing ring product 120.

[0031] In an embodiment of the present invention, a push block 104 and a top sleeve 105 are provided, which can be used together to directly cut off and separate the material handle 118 and the sealing ring product 120 after the injection molding is completed, without the need to cut and separate them after demolding, thereby reducing the operation process and effectively improving work efficiency.

[0032] In one embodiment of the present invention, specifically, the second ejector pin 111 drives the ejector sleeve 105 to cut off and separate the material handle 118 and the sealing ring product 120, and the first ejector pin 110 drives the ejector sleeve 105 to move upward along the axial direction of the rear mold insert 101, thereby ejecting the sealing ring product 120 upward to complete demolding.

[0033] Furthermore, as a preferred embodiment of the present invention, the top sleeve 105 includes a top sleeve base 1051 fixedly mounted on the upper end of the second top rod 111, a top sleeve body 1052 is provided on the top sleeve base 1051, a top sleeve head 1053 is installed on the upper end of the top sleeve body 1052, the diameter of the top sleeve body 1052 is larger than the diameter of the top sleeve head 1053, and a top sleeve concave surface 1054 is provided on the inner side of the upper end edge of the top sleeve head 1053.

[0034] In the embodiment of the present invention, specifically, since the top sleeve concave surface 1054 is provided, that is, a small concave surface is provided on the head of the top sleeve 105, a groove with a height difference is formed at the edge. Through this height difference, when the second push rod 111 drives the top sleeve 105 to push up, the material handle 118 and the sealing ring product 120 will be cut off and separated, that is, the cutting is completed at the same time as demoulding, instead of manually cutting off the material handle 118 and the sealing ring product 120 after demoulding. Usually, manual cutting has the problem of uncontrollable accuracy, which will increase the scrap rate.

[0035] In one embodiment of the present invention, Figure 5It can be seen that the sealing ring product 120 is a very small and thin shell, which is usually used for button battery packaging and other aspects. Therefore, there are very high requirements for the mold quality. When traditional molds are used to injection mold such very thin products, in order to ensure their shape, the material handle 118 and the sealing ring product 120 are usually cut off and separated after demolding.

[0036] In another example of the present invention, the embodiment of the present invention is described using button battery packaging as an example, but is not limited thereto. The molding die can also be used to produce other types of sealing ring products 120. In the embodiment of the present invention, the molding die can include a top sleeve concave surface 1054 with a height difference. When the top sleeve concave surface 1054 contacts the sealing ring product 120 connected to the material handle 118 in the injection cavity 119, the second ejector pin 111 drives the top sleeve 105 upward, cutting off the material handle 118 and the sealing ring product 120, thereby separating the sealing ring product 120 from the upper end of the material handle 118.

[0037] Furthermore, as a preferred embodiment of the present invention, at least one locking piece 107 is provided on the outer side of the upper mold, and mold locking can be achieved through the locking piece 107. The embodiment of the present invention does not limit the specific structural form of the locking piece 107. For example, the shape of the locking piece 107 can be U-shaped, rectangular, triangular, L-shaped, etc., and can be adaptively adjusted according to the installation environment.

[0038] Furthermore, as a preferred embodiment of the present invention, the lower mold includes a base and a lower mold layer 121, a lower mold second layer 122, and a lower mold third layer 123 arranged on the base in sequence, the lower mold layer 121 is provided with a double-section ejector pin 114, the lower mold second layer 122 is provided with a top rocker rod assembly for driving the lower mold layer 121 to move upward, and correspondingly, the base is also provided with a plurality of limiting columns 117 for installing the lower mold layer 121, the lower mold second layer 122, and the lower mold third layer 123 and limiting the reciprocating movement of the lower mold layer 121, the lower mold second layer 122, and the lower mold third layer 123.

[0039] In the embodiment of the present invention, specifically, due to the drop of the concave surface 1054 of the top sleeve, when the second ejector 111 drives the top sleeve 105 to push up, the material handle 118 and the sealing ring product 120 are cut off and separated. When the second layer 122 of the lower mold rises, the top swing arm assembly on the second layer 122 of the lower mold is stuck to the inner wall of the mold while tilting up. Figure 3 and Figure 6 As shown, the lower mold layer 121 is pushed up again by the top rocker assembly, and then the sealing ring product 120 and the material handle 118 are pushed out by the push block 104 and the double-section ejector pin 114, and separated from the top sleeve 105. At this time, demolding and separation of the sealing ring product 120 and the material handle 118 can be completed.

[0040] Furthermore, as a preferred embodiment of the present invention, the ejector rocker assembly includes a secondary ejection fixing block 102 that is detachably arranged on the second layer 122 of the lower mold, and a rotatable secondary ejection rocker 103 is installed on the secondary ejection fixing block 102. Through the seesaw-like structure of the secondary ejection rocker 103, the lower mold layer 121 can be pushed upward again, that is, after the injection molding is completed in the mold cavity, the mold is opened, and the lower mold layer 121 and the lower mold second layer 122 in the lower mold are pushed upward, and the sealing ring product 120 is ejected upward by the first ejector rod 110, the second ejector rod 111, and the double-section ejector pin 114 to complete the demolding.

[0041] In one embodiment of the present invention, the secondary ejection fixing block 102 can be detachably connected using positioning members. For example, the positioning members can be nuts, clips, screws, etc. In this embodiment, the positioning members are preferably a combination of bolts and nuts. Of course, if desired, to improve stability, the secondary ejection fixing block 102 can also be fixed to the lower mold second layer 122 by welding.

[0042] Furthermore, as a preferred embodiment of the present invention, the rear mold insert 101 is also provided with a cooling water jacket 106 passing through the internal axis of the rear mold insert 101. The cooling water jacket 106 can cool the rear mold insert 101, and then the injection molding material in the injection molding cavity 119 can be cooled to form a sealing ring product 120.

[0043] It should be noted that the technical point of the molding mold in application is: because the sealing ring product 120 is small and thin, by providing a cooling water jacket 106, the sealing ring product 120 is first pushed out during the operation, and the outer wall of the sealing ring product 120 is first cooled, and then the sealing ring product 120 is separated from the top sleeve 105, thereby completing the entire demolding. This effectively prevents the sealing ring product 120 from being easily deformed when demolded directly, and there is no need to cut off the material handle 118 after demolding, and the entire process is automated.

[0044] like Figure 1-4 As shown, as a preferred embodiment of the present invention, the lower end of the upper mold is provided with a runner insert 112 for connecting to the gate sleeve 115, the runner insert 112 is connected to the front mold insert 108 through the gate insert 109, and the injection cavity 119 is provided in the front mold insert 108.

[0045] As a preferred embodiment of the present invention, the upper mold is provided with a plurality of puller needles 113 on one side of the gate sleeve 115. The puller needles 113 are used to pull the material head 124 (the remaining part of the injection molding material after removing the material handle 118 and the sealing ring product 120). The molding mold is particularly suitable for small sealing ring injection molding. When the injection molding is completed in the mold cavity and the mold is opened, the puller needles 113 will Figure 1 The middle material head 124 is pulled away, and the lower mold layer 121 and the lower mold layer 122 in the lower mold are pushed upward, and the sealing ring product 120 is pushed upward by the first ejector rod 110, the second ejector rod 111, and the double-section ejector pin 114 to complete the demoulding.

[0046] As a preferred embodiment of the present invention, a stripper plate insert 116 is further provided in the middle of the side of the upper mold away from the gate sleeve 115. The stripper plate insert 116 can be connected to the runner insert 112, thereby enabling the gate sleeve 115 to input the injection molding material.

[0047] An embodiment of the present invention also provides a sealing ring injection molding device, including the above-mentioned molding mold, and the sealing ring injection molding device also includes an injection molding machine body, the input end of the injection molding machine body is connected to the gate sleeve 115 to input the injection material to be injected into the injection molding cavity 119.

[0048] In one embodiment of the present invention, specifically, the injection molding machine body can be an existing injection molding machine product, and the specific model is selected according to needs and is not limited here. It can also be based on the existing injection molding machine product, and a driving mechanism for driving the various components in the molding mold to move according to the description of the above embodiment can be installed.

[0049] In another embodiment of the present invention, the driving mechanism may be a servo motor known in the art, the specific model of which is not described in detail herein. It is understood that in other embodiments, a cylinder or the like may be used for driving, or a steering gear may be provided under the control of a servo motor, driven by the servo motor and connected to a corresponding device to be driven. The specific embodiment is not limited thereto and may be adapted to the installation environment.

[0050] Furthermore, as a preferred embodiment of the present invention, the sealing ring injection molding equipment also includes a pump body for inputting cooling water into the cooling water jacket 106. Through the delivery of the pump body, the cooling water can be circulated in the cooling water jacket 106, thereby ensuring the cooling effect.

[0051] In one embodiment of the present invention, generally speaking, existing products such as circulation pumps (pumps for conveying circulating liquid for reaction, absorption, separation, and regeneration of absorption liquid), cooling water pumps (suitable for conveying clean water or liquids with physical and chemical properties in high-pressure operating systems) can be used. The specific model is selected according to needs and is not limited here, as long as the circulation and transportation of cooling water can be achieved.

[0052] In another example of the present invention, the sealing ring injection molding equipment also includes a two-axis manipulator for driving the jig to adsorb the sealing ring product 120 and complete the collection of the sealing ring product 120. It can also directly clamp and remove waste materials such as the material head 124 and the material handle 118. The two-axis manipulator can adopt existing technology and will not be elaborated here.

[0053] The working principle of this embodiment is as follows: the molding die inputs the injection plastic into the injection cavity 119 through the gate sleeve 115, and the injection plastic in the injection cavity 119 forms a sealing ring product 120 after injection cooling, and the remaining injection plastic on the upper end of the sealing ring product 120 forms a material handle 118; due to the provision of the ejector sleeve 105, a groove with a height difference is formed at the edge portion. Through this height difference, when the second ejector pin 111 drives the ejector sleeve 105 to push upward, the material handle 118 and the sealing ring product 120 are cut off and separated, that is, the cutting is completed at the same time as the demoulding, instead of manually cutting off the material handle 118 and the sealing ring product 120 after demoulding. The lower mold layer 121 is pushed upward again by the ejector rocker assembly, and then the sealing ring product 120 and the material handle 118 are pushed out and separated from the ejector sleeve 105 by the push block 104 and the double-section ejector pin 114. At this time, the demoulding and the separation of the sealing ring product 120 and the material handle 118 are completed.

[0054] The electrical appliances mentioned in this article can all be connected to an external main controller and 220V mains electricity, and the main controller can be a conventional known device that performs control such as a computer.

[0055] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0056] It should be further explained that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The statement "comprising a defined element does not exclude the existence of other identical elements in the process, method, article or device comprising the element". The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can all be customized according to the description in the specification and the drawings. The specific connection method of each part can adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art, which will not be described in detail here.

[0057] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A molding die, comprising an upper die and a lower die adapted to the upper die, characterized in that: A plurality of rear mold inserts (101) are provided inside the upper end of the lower mold, a top sleeve (105) and a push block (104) located above the top sleeve (105) are provided on the upper part of the rear mold insert (101), a gate sleeve (115) for inputting injection plastic is provided on the upper end of the upper mold, and the molding mold further comprises: a first ejector rod (110), the upper end of which is connected to the push block (104) and is used to drive the push block (104) to move back and forth along the axis of the rear mold insert (101); a plurality of gate sleeves (115) for injecting the injection plastic are provided inside the upper mold on one side facing the lower mold. The injection molding cavity (119) of the injection plastic input by the sleeve (115), the injection plastic in the injection molding cavity (119) forms a sealing ring product (120) after cooling, and the remaining injection plastic on the upper end of the sealing ring product (120) forms a material handle (118); and a second ejector rod (111), the upper end of which is connected to the ejector sleeve (105) and is used to drive the ejector sleeve (105) to move back and forth along the axis direction of the rear mold insert (101) to cut off the material handle (118) and the sealing ring product (120); wherein the ejector sleeve (105) includes a second ejector rod (111) fixedly mounted on the first ejector sleeve (105) and the second ejector rod (111) The top sleeve base (1051) is located at the upper end of the second push rod (111), and a top sleeve body (1052) is provided on the top sleeve base (1051). A top sleeve head (1053) is installed on the upper end of the top sleeve body (1052), and a top sleeve concave surface (1054) is provided on the inner side of the upper end edge of the top sleeve head (1053), thereby forming a groove with a height difference, and the height difference is used to achieve the cutting and separation of the material handle (118) and the sealing ring product (120); the lower mold includes a base and a lower mold layer (121), a lower mold second layer (122) and a lower mold second layer (123) which are sequentially arranged on the base. 22), a lower mold three-layer (123), a double-section ejector pin (114) is provided on the lower mold one layer (121), and a top swing rod assembly for driving the lower mold one layer (121) to move upward is provided on the lower mold two layer (122); the top swing rod assembly includes a secondary ejection fixed block (102) detachably provided on the lower mold two layer (122), and a rotatable secondary ejection swing rod (103) is installed on the secondary ejection fixed block (102); a cooling water jacket (106) passing through the internal axis of the rear mold insert (101) is also provided in the rear mold insert (101).

2. A forming mold according to claim 1, characterized in that: The lower end of the upper mold is provided with a runner insert (112) for communicating with a gate sleeve (115); the runner insert (112) is communicated with a front mold insert (108) via a gate insert (109); and the injection cavity (119) is provided in the front mold insert (108).

3. A forming mold according to claim 2, characterized in that: A plurality of pulling needles (113) are correspondingly provided on one side of the upper mold where the gate sleeve (115) is provided.

4. A forming mold according to claim 2, characterized in that: A stripper plate insert (116) is also provided in the middle of one side of the upper mold away from the sprue sleeve (115).

5. A sealing ring injection molding device, comprising a molding die according to any one of claims 1 to 4, characterized in that: The sealing ring injection molding equipment further comprises an injection molding machine body, the input end of which is in communication with a sprue bushing (115) so as to inject the injection molding material into the injection molding cavity (119).

6. The sealing ring injection molding equipment according to claim 5, characterized in that: The sealing ring injection molding equipment also includes a pump body.

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