CN110919995A - Anti-adhesion demolding structure for slider-wrapped annular product - Google Patents

Abstract

The invention provides an anti-adhesion demolding structure for a slider-wrapped annular product, and belongs to the field of injection molds. The injection molding machine comprises a liquid flow block connected to a bottom injection mold, wherein forming sliding blocks are arranged on two sides of the liquid flow block respectively, a side-pumping sliding block is connected to the outer side of each forming sliding block, a forming boss is arranged on one side, close to the liquid flow block, of each forming sliding block, the side-pumping sliding blocks are wrapped on one sides, far away from the forming bosses, of the forming sliding blocks, a plurality of demolding assemblies which are uniformly distributed are embedded in each side-pumping sliding block, a limiting groove which is matched with the demolding assemblies is further formed in the top surface of each forming sliding block, the demolding assemblies are located in the limiting grooves, and the demolding assemblies can perform reciprocating linear motion in the axial direction. The invention has the advantages of simple operation, simple structure and high production efficiency.

Description

Anti-adhesion demolding structure for slider-wrapped annular product

Technical Field

The invention belongs to the field of injection molds, and relates to an anti-adhesion demolding structure for an annular product formed by wrapping a sliding block.

Background

There are various cyclic annular products of being wrapped up in slider inside shaping on the market, accomplish the operation back of moulding plastics, need break away from slider and shaping piece from injection mold in proper order, break away from the slider with the product again, because the particularity of cyclic annular product, can adhere each other with the slider after the shaping, in-process that follow-up product breaks away from the slider, may lead to the ejecting process degree of difficulty to increase because slider and cyclic annular product closely laminate.

For example, the chinese patent discloses an anti-blocking type compression mold [ application No.: 201320110797.1], including the upper cover plate on top and the lower cover plate of bottom, the lower extreme of upper cover plate is connected with the backup pad, goes up the backup pad lower extreme and is provided with the hot plate, is fixed with the top platen on the top hot plate, is provided with the movable mould on the top platen, and the upper end of lower cover plate is connected with the lower support plate, and the lower hot plate upper end is provided with the lower hot plate, is fixed with the lower die pressing plate on the lower hot plate, is provided with the cover half on the lower die pressing plate, is provided with the pressure bottle on the lower surface of upper cover plate, the pressure bottle. However, the mold in this solution does not take into account that demolding of the annular product by injection molding cannot be accomplished by this structure.

Disclosure of Invention

The invention aims to solve the problems and provides an anti-adhesion demoulding structure for a slider-wrapped annular product.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides an antiseized even demoulding structure of cyclic annular product for slider parcel shaping, is including connecting the liquid stream piece on injection mould down, and liquid stream piece both sides respectively are equipped with the shaping slider, and the outside of every shaping slider respectively is connected with the side and takes out the slider, and one side that the shaping slider is close to the liquid stream piece is equipped with the shaping boss, the side take out the slider parcel and keep away from shaping boss one side at the shaping slider, every side is taken out the slider and is embedded has a plurality of evenly distributed's drawing of patterns subassembly, still is equipped with the spacing groove that matches with the drawing of patterns subassembly on the top surface of shaping slider, drawing of patterns subassembly is located the spacing inslot, just drawing of patterns subassembly can take out the slider in the side.

In the anti-adhesion demoulding structure for the slider to wrap and form the annular product, the forming boss is positioned on the end face of the forming slider close to one side of the liquid flow block, the top face of the forming boss protrudes out of the top face of the forming slider, the side drawing slider is positioned on the top face of the forming slider, the end face of the side drawing slider close to the forming boss is tightly attached to the end face of the forming boss, and the end face of the demoulding component close to the forming boss and the end face of the side drawing slider close to the forming boss are positioned in the same plane.

In the anti-adhesion demoulding structure for the slider-wrapped and molded annular product, the end face of the side drawing slider, which is far away from the liquid flow block, is provided with a limiting groove, a fixing plate is fixedly connected in the limiting groove, all demoulding assemblies penetrate through the side drawing slider, and the demoulding assemblies are movably connected with the fixing plate.

In the anti-adhesion demoulding structure for the slider-wrapped and molded annular product, each demoulding component comprises a shifting boss, the end face, close to the liquid flow block, of each shifting boss is fixedly connected with a limiting boss, the end face, far away from the shifting bosses, of each limiting boss is fixedly connected with a thimble sheet, the tail end of each limiting boss is provided with a one-way moving block perpendicular to the thimble sheet, and the one-way moving block is movably connected with the fixed plate.

In the anti-adhesion demoulding structure for the annular product formed by wrapping the sliding block, the shifting lug boss and the limiting lug boss are cylindrical, the thimble sheet is positioned at the center of the limiting lug boss, the thimble sheet is arranged along the horizontal direction, the limiting groove is matched with the limiting lug boss in shape, and the limiting lug boss can perform axial linear motion in the limiting groove.

In the anti-adhesion demoulding structure for the slider-wrapped and molded annular product, the side-pulling slider is internally provided with three sections of grooves matched with the demoulding components in shape and size, the three sections of grooves are the same as the demoulding components in quantity, the demoulding components are correspondingly positioned in the three sections of grooves, the fixed plate is positioned on one side of the shifting lug boss far away from the liquid flow block, and the one-way moving block penetrates into the fixed plate.

In the anti-adhesion demoulding structure for the slider-wrapped and molded annular product, the end face of the unidirectional moving block, which is far away from the liquid flow block, is provided with the matching inclined plane, the matching inclined plane inclines towards the direction far away from the liquid flow block along the direction close to the liquid flow block, and the matching inclined plane is matched with the end face of the inclined ejecting block arranged on the outer side of the side-pulling slider.

In the anti-adhesion demoulding structure for the slider to wrap and form the annular product, the bottom surface of the side drawing slider, which is far away from one side of the liquid flow block, is provided with a plurality of fixed-distance moving grooves, each fixed-distance moving groove is internally provided with a fixed block which can move in the vertical direction, the fixed block is always positioned in the fixed-distance moving grooves to perform linear motion, the length of each fixed-distance moving groove is greater than that of the fixed block, and the fixed block is fixedly connected with a lower injection mould.

In the above-mentioned be used for cyclic annular product of slider parcel shaping antiseized even demoulding structure, be equipped with a plurality of flowing liquid way on the top surface of liquid flow piece, every flowing liquid way is close to the both ends of side take out the slider and is equipped with the play liquid hole with the shaping boss intercommunication, just flowing liquid way between evenly distributed have a plurality of antiseized discharge chute.

In the foretell be arranged in the antiseized even demoulding structure of cyclic annular product of slider parcel shaping, the flowing liquid say and be the cross, every flowing liquid is said and is equipped with a plurality of ejector pin, every flowing liquid says and is close to the terminal downward sloping that the slider was taken out to the side, antiseized flash tank be the T font, one side that antiseized flash tank is close to the shaping boss is the opening form, just antiseized flash tank be close to the degree of depth on one side of the shaping boss and reduce gradually.

Compared with the prior art, the invention has the advantages that:

1. the inside drawing of patterns subassembly that sets up of slider is taken out to the side, and when the die sinking, the slider is taken out to the side motion, and drawing of patterns subassembly takes place the motion simultaneously, does not have relative displacement between the two, and when product and slider moved to the assigned position, drawing of patterns subassembly relative side take out the slider and take place to remove, and the thimble piece on the drawing of patterns subassembly moves certain distance backward, breaks away from the product from the shaping boss of shaping slider successfully, has avoided product and slider to take place the adhesion.

2. The aperture of the liquid flowing channel is gradually reduced towards one side close to the forming boss, when the injection molding liquid enters rapidly, the final flow speed is controlled through the aperture, and the shape of the inclined downward liquid flowing channel is favorable for the flow of the injection molding liquid.

3. The depth of the anti-sticking flash groove close to the molding boss is reduced, namely the thickness of the molded structure is gradually reduced, and when the product is pushed by the ejector pin, redundant structures can be easily folded down from the product.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

FIG. 1 is a schematic of the present invention.

Fig. 2 is a schematic view of the internal structure of the present invention.

Fig. 3 is a schematic structural diagram of the side drawing slider.

Fig. 4 is a schematic structural view of the stripper assembly.

Fig. 5 is a schematic view in another direction of fig. 4.

FIG. 6 is a schematic view of the structure of the shaped slider.

Fig. 7 is an enlarged view at a in fig. 1.

In the figure: the device comprises a liquid flow block 1, a side drawing slide block 2, a forming slide block 300, a forming boss 3, a demoulding component 4, a limiting groove 5, a limiting groove 6, a fixing plate 7, a shifting boss 8, a limiting boss 9, a thimble sheet 10, a one-way moving block 11, three sections of grooves 12, a matching inclined plane 13, a fixed distance moving groove 14, a fixing block 15, a liquid flow channel 16, a liquid outlet hole 17 and an anti-sticking overflow groove 18.

Detailed Description

The invention is further described below with reference to the accompanying drawings.

As shown in fig. 1 and 2, an anti-adhesion demoulding structure for a slider-wrapped and formed annular product comprises a liquid flow block 1 connected to a lower injection mould, forming sliders 300 are respectively arranged on two sides of the liquid flow block 1, a side-pulling slider 2 is respectively connected to the outer side of each forming slider 300, a forming boss 3 is arranged on one side, close to the liquid flow block 1, of each forming slider 300, the side-pulling sliders 2 are wrapped on one sides, far away from the forming bosses 3, of the forming sliders 300, demoulding components 4 which are uniformly distributed are embedded in each side-pulling slider 2, a limiting groove 5 which is matched with each demoulding component 4 is further arranged on the top surface of each forming slider 300, each demoulding component 4 is located in the limiting groove 5, and each demoulding component 4 can perform reciprocating linear motion in the side-pulling sliders 2 along the axial direction.

Various annular products which are wrapped inside the sliding block for forming exist on the market, after the injection molding operation is completed, the sliding block and the forming block are required to be sequentially separated from the injection mold, then the products are separated from the sliding block, due to the particularity of the annular products, the formed annular products can be mutually adhered with the sliding block, in the process that the subsequent products are separated from the sliding block, the difficulty in the ejection process is possibly increased due to the close adhesion of the sliding block and the annular products, and therefore a special structure is required to be designed to prevent the products from being adhered with the sliding block, in the scheme, the side-pulling sliding block 2 moves towards two sides during mold opening, the demolding component 4 moves simultaneously, relative displacement does not exist between the side-pulling sliding block 2 and the sliding block, when the products and the sliding block move to the appointed position, the demolding component 4 moves towards the side-pulling sliding block 2, the thimble sheet 10 on the demolding component 4 moves backwards, successfully break away from the shaping boss 3 of shaping slider 300 with the product, this structure has reduced the difficult and easy degree of product drawing of patterns, has avoided product and slider to take place the adhesion again, and the drawing of patterns process can accomplish automaticly, has reduced manufacturing cost again when having improved production efficiency.

As shown in fig. 6, in this embodiment, the molding boss 3 is located on the end surface of the molding slider 300 close to the liquid flow block 1, the top surface of the molding boss 3 protrudes from the top surface of the molding slider 300, the side-pulling slider 2 is located on the top surface of the molding slider 300, the end surface of the side-pulling slider 2 close to the molding boss 3 is tightly attached to the end surface of the molding boss 3, and the end surface of the demolding assembly 4 close to the molding boss 3 and the end surface of the side-pulling slider 2 close to the molding boss 3 are located in the same plane.

The shaping boss 3 is located shaping slider 300 inboard, and during the shaping, the liquid of moulding plastics flows to both sides shaping boss 3 through flowing through liquid way 16 to at the annular product of surface cooling one-tenth of shaping boss 3, the final product glues on shaping boss 3, takes out slider 2 through the side and drives shaping boss 3 and remove to the outside, breaks away from the shaping boss 3 with the product afterwards again, prevents that the product from directly gluing and leading to unable smooth drawing of patterns on taking out slider 2 at the side.

As shown in fig. 2, in this embodiment, a limiting groove 6 is disposed on an end surface of the side-pulling slider 2 away from the liquid flow block 1, a fixing plate 7 is fixedly connected in the limiting groove 6, all the demolding assemblies 4 penetrate through the side-pulling slider 2, and the demolding assemblies 4 are movably connected to the fixing plate 7.

The limiting groove 6 penetrates through the side drawing sliding block 2, the length of the fixing plate 7 connected with the inside of the limiting groove 6 is required to be equal to that of all the demolding components 4, as shown in fig. 1, most preferably, the demolding components 4 with even numbers are connected through penetrating through the fixing plate 7, the demolding components 4 can be connected between every two adjacent fixing plates 7 through notches and the like matched with the shapes of the demolding components 4, the number of the demolding components 4 is increased properly, the distance between the demolding components 4 is shortened, and the stability of the product separated from the forming boss 3 is improved.

As shown in fig. 1, 4 and 5, in this embodiment, each demolding assembly 4 includes a displacement boss 8, a limiting boss 9 is fixedly connected to an end surface of the displacement boss 8 close to the liquid flow block 1, an ejector pin sheet 10 is fixedly connected to an end surface of each limiting boss 9 far from the displacement boss 8, a one-way moving block 11 perpendicular to the ejector pin sheet 10 is arranged at a tail end of each limiting boss 9, and the one-way moving block 11 is movably connected to the fixing plate 7.

The interconnection of one-way moving block 11 and fixed plate 7 prevents that drawing of patterns subassembly 4 from taking place to rotate at the removal in-process, leads to thimble piece 10 to change the horizontal direction setting originally, utilizes drawing of patterns subassembly 4 ejecting product in-process because of the atress is inhomogeneous and takes place to deflect.

As shown in fig. 2, in this embodiment, the displacement boss 8 and the limit boss 9 are both cylindrical, the thimble sheet 10 is located at the center of the limit boss 9, the thimble sheet 10 is arranged along the horizontal direction, the limit groove 5 is matched with the limit boss 9 in shape, and the limit boss 9 can perform axial linear motion in the limit groove 5.

After the injection molding operation is completed, the side drawing sliding block 2 drives the molding sliding block 300 and the demolding component 4 to move outwards simultaneously, when the side drawing sliding block moves to a fixed distance, the limiting boss 9 controls the distance of the demolding component 4 to perform linear motion in the limiting groove 5, the demolding component 4 draws the distance of the limiting groove 5 by the side drawing sliding block 2 opposite to the limiting groove 5, a product is ejected out from the molding boss 3, and the demolding operation is completed.

As shown in fig. 3, in the present embodiment, three grooves 12 are provided in the side-pulling slider 2, the shape and size of each of the three grooves 12 are matched with those of the demolding assembly 4, the number of the three grooves 12 is the same as that of the demolding assembly 4, the demolding assembly 4 is correspondingly located in the three grooves 12, the fixing plate 7 is located on one side of the displacement boss 8 away from the fluidic block 1, and the one-way moving block 11 penetrates through the fixing plate 7.

The internal structure of the three grooves 12 is matched with the demoulding component 4, the distance of the demoulding component 4 moving towards the direction close to the liquid flow block 1 is fixed, the fixing plate 7 is fixedly connected with the side drawing slide block 2, the demoulding component 4 is sealed in the three grooves 12, the distance of the demoulding component 4 moving towards the direction far away from the liquid flow block 1 is also fixed, namely, the demoulding component 4 does not leave the side drawing slide block 2 all the time in the moving process.

As shown in fig. 5, in this embodiment, an end surface of the unidirectional moving block 11 away from the fluidic block 1 is provided with a matching inclined surface 13, the matching inclined surface 13 inclines along a direction close to the fluidic block 1 toward a direction away from the fluidic block 1, and the matching inclined surface 13 is matched with an end surface of an inclined top block arranged outside the side pulling slider 2.

In the process that the unidirectional moving block 11 moves outwards in a segmented mode, the unidirectional moving block is matched with the inclined ejector block through the matching inclined surface 13, after the unidirectional moving block 11 moves, the relative position of the unidirectional moving block and the inclined ejector block changes, and the ejector pin piece 10 is controlled to move backwards and separate from a product.

As shown in fig. 1, 2 and 4, in this embodiment, a plurality of fixed distance moving grooves 14 are formed in a bottom surface of the side-drawing sliding block 2 on a side away from the liquid flow block 1, a fixed block 15 moving in a vertical direction is arranged in each fixed distance moving groove 14, the fixed block 15 is always located in the fixed distance moving grooves 14 to perform linear motion, the length of the fixed distance moving groove 14 is greater than that of the fixed block 15, and the fixed block 15 is fixedly connected with a bottom pour mold.

The moving distance of the fixed block 15 in the fixed distance moving groove 14 is determined by the moving distance of the demoulding component 4 on the side drawing slide block 2, and the fixed block 15 limits the side drawing slide block 2 to excessively move towards two sides, so that the positions of the side drawing slide block 2 and the forming boss 3 are deviated, and the next injection molding operation is influenced.

As shown in fig. 1, in this embodiment, a plurality of liquid flow channels 16 are disposed on the top surface of the liquid flow block 1, liquid outlet holes 17 communicated with the forming boss 3 are disposed at two ends of each liquid flow channel 16 close to the side-drawing slider 2, and a plurality of anti-sticking spillway grooves 18 are uniformly distributed between the liquid flow channels 16.

When the drawing of patterns is operated, take out slider 2 when the side and remove to both sides respectively, the fashioned structure of a plurality of antiseized flash tanks 18 can be fixed annular product, prevents that the product from gluing and being taken out slider 2 pulling by the side on the slider 2 is taken out to the side, moves to both sides simultaneously, finally leads to the drawing of patterns to fail.

As shown in fig. 1 and 7, in this embodiment, the flow channel 16 is cross-shaped, a plurality of push rods are arranged in each flow channel 16, each flow channel 16 inclines downwards near the end of the side-pulling slide block 2, the anti-sticking overflow groove 18 is T-shaped, one side of the anti-sticking overflow groove 18 near the molding boss 3 is open, and the depth of the anti-sticking overflow groove 18 near one side of the molding boss 3 is gradually reduced.

The aperture that and the flowing liquid says 16 reduces to being close to shaping boss 3 one side gradually, when the liquid of moulding plastics enters into fast, through the final velocity of flow of aperture control, and the downward shape that sets up of flowing liquid way 16 slope does benefit to the flow of the liquid of moulding plastics, antiseized flash tank 18 reduces near the degree of depth of shaping boss 3, fashioned structure thickness reduces gradually promptly, when the thimble promotes the product, can be easy fold down unnecessary structure from the product, after the completion drawing of patterns operation, detach unnecessary structure with the runner clamp.

The working principle of the invention is as follows: during injection molding, injection molding liquid is uniformly distributed on a molding boss 3 of a molding slider 300 through a liquid outlet hole 17 at the tail end of a flow channel 16, demolding operation is carried out after cooling molding, a demolding component 4 is arranged inside a side-pulling slider 2, during mold opening, the side-pulling slider 2 moves towards two sides, the molding slider 300 and the demolding component 4 move simultaneously, no relative displacement exists between the molding slider and the demolding component, when a product and the slider move to a specified position, the demolding component 4 moves relative to the side-pulling slider 2, through mutual matching of a one-way moving block 11 and a fixed plate 7, a limiting boss 9 on the demolding component 4 moves for a fixed distance in a limiting groove 5, a thimble sheet 10 moves backwards for a certain distance along with the displacement, the product is successfully separated from the molding boss 3 of the molding slider 300, a T-shaped structure simultaneously injected on an anti-sticking overflow groove 18 plays a certain role of tensile force on the product, and the product is prevented, in the demolding process, the structure avoids the product from being adhered to the sliding block, the difficulty of demolding the product is reduced, the demolding process can be automated, and the production cost is reduced while the production efficiency is improved.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit of the invention.

Although the terms of the liquid flow block 1, the side drawing slide block 2, the forming slide block 300, the forming boss 3, the demolding component 4, the limiting groove 5, the limiting groove 6, the fixing plate 7, the shifting boss 8, the limiting boss 9, the thimble sheet 10, the one-way moving block 11, the three-section groove 12, the matching inclined plane 13, the distance moving groove 14, the fixing block 15, the liquid flow channel 16, the liquid outlet hole 17, the anti-sticking overflow groove 18 and the like are used more frequently, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention and they are to be interpreted as any additional limitation which is not in accordance with the spirit of the present invention.

Claims (10)

1. An anti-adhesion demoulding structure for a slider-wrapped and molded annular product comprises a liquid flow block (1) connected on a lower injection mould, molding sliders (300) are respectively arranged at two sides of the liquid flow block (1), a side-pumping slider (2) is respectively connected at the outer side of each molding slider (300), it is characterized in that one side of the forming slide block (300) close to the liquid flow block (1) is provided with a forming lug boss (3), the side-pulling sliding blocks (2) are wrapped at one side of the forming sliding blocks (300) far away from the forming lug bosses (3), a plurality of demoulding components (4) which are uniformly distributed are embedded in each side-pulling sliding block (2), the top surfaces of the forming sliding blocks (300) are also provided with limit grooves (5) which are matched with the demoulding components (4), the demoulding components (4) are positioned in the limit grooves (5), and the demoulding component (4) can do reciprocating linear motion along the axial direction in the side-drawing sliding block (2).

2. The anti-adhesion demolding structure for the slider wrapped and molded annular product according to claim 1, wherein the molding boss (3) is located on the end face of the molding slider (300) close to one side of the liquid flow block (1), the top face of the molding boss (3) protrudes out of the top face of the molding slider (300), the side pulling slider (2) is located on the top face of the molding slider (300), the end face of the side pulling slider (2) close to the molding boss (3) is tightly attached to the end face of the molding boss (3), and the end face of the demolding assembly (4) close to the molding boss (3) and the end face of the side pulling slider (2) close to the molding boss (3) are located in the same plane.

3. The anti-adhesion demolding structure for the slider-wrapped and molded annular product according to claim 2, wherein a limiting groove (6) is formed in the end face of one side, away from the liquid flow block (1), of the side-pulling slider (2), a fixing plate (7) is fixedly connected in the limiting groove (6), all demolding assemblies (4) penetrate through the side-pulling slider (2), and the demolding assemblies (4) are movably connected with the fixing plate (7).

4. The anti-adhesion demolding structure for the slider package-formed annular product according to claim 3, wherein each demolding component (4) comprises a displacement boss (8), a limiting boss (9) is fixedly connected to the end face, close to the liquid flow block (1), of each displacement boss (8), a thimble sheet (10) is fixedly connected to the end face, far away from the displacement boss (8), of each limiting boss (9), a one-way moving block (11) perpendicular to the thimble sheet (10) is arranged at the tail end of each limiting boss (9), and the one-way moving block (11) is movably connected with the fixing plate (7).

5. The anti-adhesion demolding structure for the slider package-formed annular product according to claim 4, wherein the displacement boss (8) and the limiting boss (9) are cylindrical, the thimble sheet (10) is located at the center of the limiting boss (9), the thimble sheet (10) is arranged along the horizontal direction, the limiting groove (5) is matched with the limiting boss (9) in shape, and the limiting boss (9) can perform axial linear motion in the limiting groove (5).

6. The anti-adhesion demolding structure for the slider package-formed annular product according to claim 5, wherein three sections of grooves (12) matched with the demolding assembly (4) in shape and size are arranged in the side-pulling slider (2), the number of the three sections of grooves (12) is the same as that of the demolding assembly (4), the demolding assembly (4) is correspondingly positioned in the three sections of grooves (12), the fixing plate (7) is positioned on one side of the displacement boss (8) far away from the liquid flow block (1), and the one-way moving block (11) penetrates through the fixing plate (7).

7. The anti-adhesion demolding structure for the slider package-formed annular product according to claim 3, wherein the end surface of the one-way moving block (11) far away from the liquid flow block (1) is provided with a matching inclined surface (13), the matching inclined surface (13) inclines towards the direction far away from the liquid flow block (1) along the direction close to the liquid flow block (1), and the matching inclined surface (13) is matched with the end surface of an inclined ejector block arranged on the outer side of the side-pulling slider (2).

8. The anti-adhesion demolding structure for the slider-wrapped and molded annular product according to claim 2, wherein a plurality of fixed-distance moving grooves (14) are formed in the bottom surface of one side of the side-pulling slider (2) away from the liquid flow block (1), a fixed block (15) moving in the vertical direction is arranged in each fixed-distance moving groove (14), the fixed block (15) is always located in each fixed-distance moving groove (14) to perform linear motion, the length of each fixed-distance moving groove (14) is greater than that of each fixed block (15), and the fixed blocks (15) are fixedly connected with a lower injection mold.

9. The anti-adhesion demolding structure for the slider wrapped and molded annular product according to claim 8, wherein a plurality of liquid flow channels (16) are arranged on the top surface of the liquid flow block (1), liquid outlet holes (17) communicated with the molding boss (3) are formed in two ends, close to the side-drawing slider (2), of each liquid flow channel (16), and a plurality of anti-adhesion overflow troughs (18) are uniformly distributed among the liquid flow channels (16).

10. The anti-adhesion demolding structure for the slider package-formed annular product as claimed in claim 9, wherein the liquid flow channel (16) is cross-shaped, each liquid flow channel (16) is internally provided with a plurality of ejector rods, the end of each liquid flow channel (16) close to the side-pulling slider (2) is inclined downwards, the anti-adhesion overflow groove (18) is T-shaped, one side of the anti-adhesion overflow groove (18) close to the forming boss (3) is open, and the depth of the anti-adhesion overflow groove (18) close to one side of the forming boss (3) is gradually reduced.

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