CN114454438B

CN114454438B - Forming die and sealing ring injection molding equipment with same

Info

Publication number: CN114454438B
Application number: CN202210244497.6A
Authority: CN
Inventors: 邓海平
Original assignee: Xiamen Zhanfeng Electromechanical Co ltd
Current assignee: Xiamen Zhanfeng Electromechanical Co ltd
Priority date: 2022-03-14
Filing date: 2022-03-14
Publication date: 2025-08-19
Anticipated expiration: 2042-03-14
Also published as: CN114454438A

Abstract

The invention relates to the technical field of injection molding, in particular to a forming die and sealing ring injection molding equipment with the forming die, wherein the forming die comprises an upper die and a lower die, a plurality of rear die inserts are arranged in the upper end of the lower die, a top sleeve and a push block are arranged on the upper part of the rear die inserts, the ejector pad is connected with first ejector pin upper end, and the top cover is connected with second ejector pin upper end, and a plurality of injection molding cavities that are used for injecting the injection molding material of runner cover input have been seted up to the one side inside of going up the mould towards the lower mould, and the injection molding material in the injection molding cavity forms the sealing washer product after the cooling of moulding plastics. According to the invention, the injection molding material is injected into the injection molding cavity through the sprue bush, the top bush is arranged, the groove with the height drop is formed at the edge part, and when the second ejector rod drives the top bush to jack up upwards, the material handle and the sealing ring product are cut off and separated, so that the problem that the existing mold needs to be removed after demoulding when the sealing ring is produced is solved, and the injection molding cavity has a wide market prospect.

Description

Forming die and sealing ring injection molding equipment with same

Technical Field

The invention belongs to the technical field of injection molding, and particularly relates to a forming die and sealing ring injection molding equipment with the forming die.

Background

The injection molding technology is widely applied to various fields of electromechanics, automobiles, transportation, building materials, packaging and daily life of people due to the characteristics of rapid molding and complex molding appearance. In the market, injection molding materials are injected into a mold by an injection molding machine, and then products with various shapes are manufactured by cooling molding.

The mold is used as key equipment of an injection molding process and is usually composed of various parts, so that the processing precision requirement of respective products is met, and various complicated shapes can be manufactured. Thus, for different types of products, there is typically a corresponding mold. The existing battery sealing ring products are small in size and thin, so that waste is usually cut off after demolding in the injection molding process. However, the prior art scheme has the defects that the operation flow is increased undoubtedly by cutting off the waste after demolding, and the work efficiency is reduced by cutting off the waste usually in a manual mode.

Disclosure of Invention

The embodiment of the invention aims to provide a forming die, which solves the problem that the existing die provided in the background art needs to be removed after demolding in the process of producing a sealing ring.

The embodiment of the invention is realized in such a way that the forming die comprises an upper die and a lower die which is used for being matched with the upper die, wherein a plurality of rear die inserts are arranged in the upper end of the lower die, a top sleeve and a pushing block which is positioned above the top sleeve are arranged on the upper part of the rear die inserts, a sprue bush for inputting injection molding materials is arranged at the upper end of the upper die, and the forming die further comprises:

The upper end of the first ejector rod is connected with the ejector block and used for driving the ejector block to reciprocate along the axial lead direction of the rear mold insert, a plurality of injection cavities for injecting injection materials input by the sprue bush are formed in one side of the upper mold facing the lower mold, the injection materials in the injection cavities form a sealing ring product after injection and cooling, the residual injection materials at the upper end of the sealing ring product form a material handle, and

The upper end of the second ejector rod is connected with the ejector sleeve and used for driving the ejector sleeve to reciprocate along the axial line direction of the rear die insert so as to cut off and separate the material handle and the sealing ring product.

Preferably, the top sleeve comprises a top sleeve base fixedly installed at the upper end of the second ejector rod, a top sleeve main body is arranged on the top sleeve base, a top sleeve head is installed at the upper end of the top sleeve main body, the diameter of the top sleeve main body is larger than that of the top sleeve head, and a top sleeve concave surface is formed in the inner side of the edge of the upper end of the top sleeve head.

In another embodiment of the present invention, there is further provided a seal ring injection molding apparatus having the molding die, the seal ring injection molding apparatus further including an injection molding machine body, an input end of the injection molding machine body being communicated with the sprue bush to inject an injection molding material into the injection molding cavity.

The beneficial effects of the invention are as follows:

compared with the prior art, the forming die comprises an upper die and a lower die, wherein a plurality of rear die inserts are arranged in the upper end of the lower die, a top sleeve and a push block are arranged on the upper portion of the rear die inserts, a sprue bush for inputting injection materials is arranged at the upper end of the upper die, the push block is connected with the upper end of a first ejector rod, the top sleeve is connected with the upper end of a second ejector rod, a plurality of injection cavities for injecting injection materials input by the sprue bush are arranged in one side of the upper die, injection materials in the injection cavities form sealing ring products after injection cooling, residual injection materials at the upper end of the sealing ring products form material handles, the injection materials in the injection cavities form sealing ring products after injection cooling through the sprue bush, a groove with a height drop is formed at the edge part due to the fact that the top sleeve is arranged, and when the top sleeve is driven by the second ejector rod to be cut off, the sealing ring products are cut off upwards, and the sealing ring products are cut off after the demolding, and the existing production of the sealing ring products are cut off, and the existing production waste is completed at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following description will briefly introduce the drawings that are needed in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are only some embodiments of the present invention.

Fig. 1 is a schematic structural diagram of a molding mold according to an embodiment of the invention.

Fig. 2 is a perspective view of a molding die according to an embodiment of the invention.

Fig. 3 is a schematic structural diagram of a first lower mold layer, a second lower mold layer and a third lower mold layer in a molding mold according to an embodiment of the invention.

Fig. 4 is a schematic structural diagram of a handle according to an embodiment of the present invention.

Fig. 5 is a schematic structural diagram of a seal ring product according to an embodiment of the present invention.

Fig. 6 is a schematic diagram of a lower mold two-layer and a lower mold three-layer structure in a molding mold according to an embodiment of the invention.

Fig. 7 is a schematic structural diagram of a top cover in a forming mold according to an embodiment of the invention.

Fig. 8 is a schematic perspective view of a concave surface of a top cover in a forming mold according to an embodiment of the invention.

Fig. 9 is a schematic structural diagram of a lower mold layer, a first ejector pin and a pushing block in a forming mold according to an embodiment of the invention.

Fig. 10 is a perspective view of a sprue bush in a forming die according to another embodiment of the present invention.

Fig. 11 is a perspective view of a stripper plate insert in a molding die according to another embodiment of the present invention.

The mold comprises a 101-rear mold insert, a 102-secondary ejection fixing block, a 103-secondary ejection swing rod, a 104-push block, a 105-top sleeve, a 106-cooling water jacket, a 107-mold clamping piece, a 108-front mold insert, a 109-gate insert, a 110-first ejector pin, a 111-second ejector pin, a 112-runner insert, a 113-draw pin, a 114-double ejector pin, a 115-gate sleeve, a 116-stripper plate insert, a 117-limit post, a 118-material handle, a 119-injection cavity, a 120-sealing ring product, a 121-lower mold layer, a 122-lower mold layer, a 123-lower mold layer, a 124-material head, a 1051-top sleeve base, a 1052-top sleeve main body, a 1053-top sleeve head and a 1054-top sleeve concave surface.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clear, the technical solutions in the present embodiments will be clearly and completely described below with reference to the drawings in the present embodiments, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, based on the embodiments herein, which would be within the purview of one of ordinary skill in the art without the creative effort, are contemplated as falling within the scope of the present invention.

In the description of the present invention, it is to be understood that unless explicitly specified and limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact by another feature therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature. The above indicated azimuth or positional relationship is based on the azimuth or positional relationship shown in the drawings, and is merely for convenience of description and simplification of description, and thus is not to be construed as limiting the invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.

Specific implementations of the invention are described in detail below in connection with specific embodiments.

As shown in fig. 1 to 11, a structure diagram of a forming mold according to an embodiment of the present invention is provided, where the forming mold includes an upper mold and a lower mold adapted to the upper mold, a plurality of rear mold inserts 101 are disposed in an upper end of the lower mold, a top sleeve 105 and a pushing block 104 disposed above the top sleeve 105 are disposed on an upper portion of the rear mold inserts 101, a sprue bush 115 for inputting injection molding material is disposed on an upper end of the upper mold, and the forming mold further includes:

A first ejector rod 110, the upper end of which is connected with the ejector 104 and is used for driving the ejector 104 to reciprocate along the axial line direction of the rear mold insert 101, a plurality of injection cavities 119 for injecting injection materials input by the sprue bush 115 are formed in one side of the upper mold facing the lower mold, the injection materials in the injection cavities 119 form a sealing ring product 120 after injection and cooling, a residual injection material at the upper end of the sealing ring product 120 forms a material handle 118, and

The upper end of the second ejector rod 111 is connected with the top sleeve 105, and is used for driving the top sleeve 105 to reciprocate along the axial line direction of the rear die insert 101 so as to cut off and separate the material handle 118 and the sealing ring product 120.

In the embodiment of the invention, the pushing block 104 and the top sleeve 105 are arranged, so that the material handle 118 and the sealing ring product 120 can be directly cut off and separated after injection molding is completed, and the cutting off and separation are not required after demolding, thereby reducing the operation flow and effectively improving the working efficiency.

In one embodiment of the present invention, specifically, the second ejector rod 111 drives the ejector sleeve 105 to cut off the material handle 118 and the sealing ring product 120, and the first ejector rod 110 drives the ejector sleeve 105 to move upwards along the axial line direction of the rear mold insert 101, so that the sealing ring product 120 is ejected upwards, and demolding is completed.

Further, as a preferred embodiment of the present invention, the top sleeve 105 includes a top sleeve base 1051 fixedly installed at the upper end of the second push rod 111, a top sleeve main body 1052 is disposed on the top sleeve base 1051, a top sleeve head 1053 is installed at the upper end of the top sleeve main body 1052, the diameter of the top sleeve main body 1052 is greater than the diameter of the top sleeve head 1053, and a top sleeve concave surface 1054 is formed inside the edge of the upper end of the top sleeve head 1053.

In the embodiment of the invention, specifically, because the top sleeve concave 1054 is provided, that is, the head of the top sleeve 105 is provided with a small concave surface, a groove with a height drop is formed at the edge part, when the second ejector rod 111 drives the top sleeve 105 to jack up, the material handle 118 and the sealing ring product 120 are cut off and separated, that is, the cutting is completed while demolding, rather than manually cutting and separating the material handle 118 and the sealing ring product 120 after demolding, the problem that the accuracy cannot be mastered is still existed when the cutting is performed by adopting a manual mode, and the rejection rate can be increased.

In one example of the present invention, it can be seen from fig. 5 that the gasket product 120 is a very small and thin shell, typically used in button cell packaging and the like, and therefore, there is a high requirement for mold quality, and conventional molds are used to mold such very thin products, typically after demolding, to ensure their shape, by severing the stem 118 from the gasket product 120.

In yet another example of the present invention, the button cell package is illustrated, but not limited thereto, and the molding die may be used to produce other types of gasket products 120. In this embodiment of the present invention, the forming mold may have a top concave surface 1054 with a height drop, and when the top concave surface 1054 contacts the sealing ring product 120 connected to the material handle 118 in the injection cavity 119, the second ejector rod 111 drives the top sleeve 105 to lift upwards, so that the material handle 118 and the sealing ring product 120 are separated, and the sealing ring product 120 is separated from the material handle 118 at the upper end.

Further, as a preferred embodiment of the present invention, at least one mold locking piece 107 is disposed on the outer side of the upper mold, and mold locking can be achieved by using the mold locking piece 107, and the embodiment of the present invention does not limit a specific structural form of the mold locking piece 107, for example, the mold locking piece 107 may be in a U-shape, a rectangular shape, a triangular shape, an L-shape, or the like, and may be adaptively adjusted according to an installation environment.

Further, as a preferred embodiment of the present invention, the lower mold includes a base, and a first lower mold layer 121, a second lower mold layer 122, and a third lower mold layer 123 sequentially disposed on the base, where the first lower mold layer 121 is provided with a double-section thimble 114, the second lower mold layer 122 is provided with a top swing rod assembly for driving the first lower mold layer 121 to move upward, and correspondingly, the base is further provided with a plurality of limit posts 117 for mounting the first lower mold layer 121, the second lower mold layer 122, the third lower mold layer 123 and defining the first lower mold layer 121, the second lower mold layer 122, and the third lower mold layer 123 to reciprocate up and down.

In the embodiment of the present invention, specifically, by the head of the concave 1054 of the top sleeve, when the second ejector rod 111 drives the top sleeve 105 to jack up, the material handle 118 and the sealing ring product 120 are cut off and separated. When the lower die second layer 122 rises, the upper swing rod assembly on the lower die second layer 122 clamps the inner wall of the die and swings up, as shown in fig. 3 and 6, the upper swing rod assembly is used for jacking the lower die first layer 121 up again, and then the pushing block 104 and the double-section ejector pins 114 are used for pushing out the sealing ring product 120 and the material handle 118, so that the sealing ring product is separated from the top sleeve 105, and at the moment, the demolding and the separation of the sealing ring product 120 and the material handle 118 can be completed.

Further, as a preferred embodiment of the present invention, the ejector pin assembly includes a secondary ejection fixing block 102 detachably disposed on the lower mold second layer 122, the secondary ejection fixing block 102 is provided with a rotatable secondary ejection pin 103, and the lower mold first layer 121 can be ejected upwards again through the structure similar to a teeterboard of the secondary ejection pin 103, that is, after the injection molding is completed in the mold cavity, the mold is opened, the lower mold first layer 121 and the lower mold second layer 122 in the lower mold are ejected upwards, and the sealing ring product 120 is ejected upwards through the first ejector pin 110, the second ejector pin 111 and the double-section ejector pin 114 to complete the demolding.

In one embodiment of the present invention, the secondary ejecting fixing block 102 may be detachably connected by using a positioning member, for example, the positioning member may be a nut, a buckle, a screw, etc., and in this embodiment, the positioning member is preferably a bolt and a nut in cooperation. Of course, the secondary ejection fixing block 102 may be fixed to the lower mold second layer 122 by welding to improve stability, if necessary.

Further, as a preferred embodiment of the present invention, a cooling water jacket 106 passing through the inner axis of the rear mold insert 101 is further disposed in the rear mold insert 101, and the cooling water jacket 106 can cool the rear mold insert 101, so as to cool the injection molding material in the injection cavity 119 to form the sealing ring product 120.

It should be noted that, the technical point of the forming mold in application is that, because the sealing ring product 120 is small and thin, by providing the cooling water jacket 106, the sealing ring product 120 is pushed out in the action, the outer wall of the sealing ring product 120 is cooled first, and then the sealing ring product 120 is separated from the top sleeve 105, thus completing the whole demolding, thus effectively preventing the sealing ring product 120 from being directly demolded and being easy to deform, and the material handle 118 is not needed to be cut off after demolding, thus realizing the automation in the whole course.

As shown in fig. 1 to 4, as a preferred embodiment of the present invention, the lower end of the upper mold is provided with a runner insert 112 for communicating with a sprue bush 115, the runner insert 112 communicates with a front mold insert 108 through a sprue insert 109, and the injection cavity 119 is provided in the front mold insert 108.

As a preferred embodiment of the present invention, the side of the upper mold provided with the sprue bush 115 is further correspondingly provided with a plurality of material pulling pins 113, the material pulling pins 113 are used for pushing the material head 124 (the material stem 118 and the rest part of the sealing ring product 120 are removed after injection molding of the injection molding material), the molding mold is particularly suitable for small-sized sealing ring injection molding, when injection molding is completed in the mold cavity, the mold is opened, the material pulling pins 113 pull the material head 124 in fig. 1, the lower mold first layer 121 and the lower mold second layer 122 in the lower mold are pushed upwards, and the sealing ring product 120 is pushed upwards through the first ejector pin 110, the second ejector pin 111 and the double ejector pins 114, so as to complete demolding.

As a preferred embodiment of the present invention, a stripper plate insert 116 is further disposed in the middle of the side of the upper mold away from the sprue bush 115, and the stripper plate insert 116 may be communicated with the runner insert 112, so as to implement the injection molding material input of the sprue bush 115.

An embodiment of the present invention further provides a sealing ring injection molding apparatus, including the above molding mold, where the sealing ring injection molding apparatus further includes an injection molding machine body, and an input end of the injection molding machine body is communicated with the sprue bush 115 to input injection molding material into the injection molding cavity 119.

In one embodiment of the present invention, the injection molding machine body may be an existing injection molding machine product, the specific model is selected according to needs, and the present invention is not limited thereto, or a driving mechanism for driving each component in the molding mold to move according to the above embodiment may be installed on the basis of the existing injection molding machine product.

In yet another embodiment of the present invention, the driving mechanism may be a servo motor in the prior art, and the specific model is not described herein. It will be understood that in other embodiments, the steering engine may be driven by an air cylinder or the like, or may be set under the control of a servo motor, and the steering engine is driven by the servo motor to work, and is connected with a corresponding device to be driven, which is not limited specifically, and may be adaptively adjusted according to the installation environment.

Further, as a preferred embodiment of the present invention, the seal ring injection molding apparatus further includes a pump body for inputting cooling water into the cooling water jacket 106, and circulation of the cooling water in the cooling water jacket 106 can be achieved by transportation of the pump body, thereby ensuring a cooling effect.

In one embodiment of the present invention, a circulation pump (pump for circulating liquid for transporting reaction, absorption, separation, and regeneration of absorption liquid) may be generally used, and the existing product such as a cooling water pump (suitable for transporting clear water or a liquid of physicochemical property in a high-pressure operation system) may be used, and the specific model is selected according to need, and is not limited herein, as long as circulation transport of cooling water can be achieved.

In yet another embodiment of the present invention, the sealing ring injection molding apparatus further includes a two-axis manipulator for driving the jig to adsorb the sealing ring product 120 and collect the sealing ring product 120, and directly clamp and take out the scraps such as the stub bar 124 and the handle 118, where the two-axis manipulator may be used in the prior art and is not described herein.

The implementation principle of the embodiment is that the molding die inputs injection molding materials into the injection molding cavity 119 through the sprue bush 115, the injection molding materials in the injection molding cavity 119 form a sealing ring product 120 after injection molding and cooling, the rest injection molding materials at the upper end of the sealing ring product 120 form a material handle 118, a groove with height drop is formed at the edge part due to the arrangement of the top bush 105, when the second ejector rod 111 drives the top bush 105 to jack up, the material handle 118 and the sealing ring product 120 are cut off and separated through the drop, namely, cutting is completed while demolding, instead of manually cutting off and separating the material handle 118 and the sealing ring product 120 after demolding, a layer 121 of the lower die is jacked up again through the ejector rod assembly, and then the sealing ring product 120 and the material handle 118 are pushed out through the ejector block 104 and the double-section ejector pin 114 and separated from the top bush 105, and at this time, the demolding and the separation of the sealing ring product 120 and the material handle 118 can be completed.

The electrical appliances in the connection device can be connected with an external main controller and 220V mains supply, and the main controller can be conventional known equipment for controlling a computer and the like.

In the description of the present invention, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected via an intervening medium, or in communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art in a specific case.

It is further intended that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without more in the limited case. The word "comprising" does not exclude the presence of other elements or steps than those listed in a process, method, article or apparatus that comprises an element. Standard parts used in the invention can be purchased from the market, special-shaped parts can be customized according to the description of the specification and the drawings, and the specific connection modes of the parts can adopt conventional means such as mature bolts, rivets, welding and the like in the prior art, and the detailed description is omitted.

The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present invention, and are not intended to limit the invention, and that various changes and modifications may be made therein without departing from the spirit and scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A molding die, comprising an upper die and a lower die adapted to match the upper die, characterized in that a plurality of rear die 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 die insert (101), a gate sleeve (115) for inputting injection molding material is provided on the upper end of the upper die, and the molding die 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 reciprocate along the axis of the rear die insert (101); A plurality of injection molding cavities (119) for injecting the injection plastic input by the gate sleeve (115) are provided on the inner side of the upper mold toward the lower mold. The injection plastic in the injection molding cavity (119) forms a sealing ring product (120) after cooling, and the remaining injection plastic at 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 of the rear mold insert (101) to cut off and separate the material handle (118) and the sealing ring product (120); wherein, the 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), 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 (120) sequentially arranged on the base. 1), a lower mold second layer (122), a lower mold third layer (123), a double-section ejector pin (114) is provided on the lower mold first layer (121), a top swing rod assembly for driving the lower mold first layer (121) to move upward is provided on the lower mold second layer (122); the top swing rod assembly includes a secondary ejection fixed block (102) detachably provided on the lower mold second layer (122), a rotatable secondary ejection swing rod (103) is installed on the secondary ejection fixed block (102); a cooling water jacket (106) is further provided in the rear mold insert (101) and passes through the internal axis of the rear mold insert (101).

2. A molding mold according to claim 1, characterized in that a runner insert (112) for connecting to a gate sleeve (115) is provided at the lower end of the upper mold, 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).

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

4. A molding die according to claim 2, characterized in that a stripper plate insert (116) is further provided in the middle of a side of the upper die away from the gate sleeve (115).

5. A sealing ring injection molding device, comprising a molding mold as described in any one of claims 1 to 4, characterized in that 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 (115) to inject the injection material into the injection molding cavity (119).

6 . The sealing ring injection molding equipment according to claim 5 , further comprising a pump body.