Plastic mold with runner inside the slider

Abstract

The application discloses a plastic mold with a flow channel located in a slider, comprising an upper mold and a lower mold, wherein the upper mold comprises a mold cavity plate, a first slider is slidably arranged on the mold cavity plate, the first slider slides forward and backward, thereby forming different mold cavities, and the first slider is used for backward movement for glue injection after injection molding is completed, a second slider is further slidably arranged on the first slider, and the second slider is used for forming a granular groove on the bottom surface of the glue injection cavity. The plastic mold with the flow channel located in the slider can directly lock the slider during injection molding, so that the slider does not move, meanwhile, the slider moves to realize double-color mold cavity conversion, the glue outlet is switched, another glue outlet is blocked when the glue outlet is switched, the internal glue liquid is prevented from flowing out during the blocking process, the product production efficiency is improved, and the product quality is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of injection mold, especially a plastic mold with flow channel inside slider. BACKGROUND

[0002] Now many injection parts often need to be wrapped with a layer of soft glue, at this time, after a injection is completed, the injection part is installed in the glue wrapping mold for secondary injection, so as to wrap a layer of soft glue on the surface of the injection part.

[0003] On the existing double-color injection molding machine, two sets of injection molds are often installed on an injection rotary table, then after a injection is completed, the mold is opened, the rotary table is rotated, so as to realize the exchange of glue ports, and the mold cavity of the converted mold bottom also needs to be changed, so as to empty the glue injection cavity after the mold is closed, so that the secondary injection needs two sets of molds to be completed. SUMMARY

[0004] The present application provides a plastic mold with flow channel inside slider aiming at the deficiencies in the prior art.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a plastic mold with the flow channel located inside the slider, including an upper mold and a lower mold. The upper mold includes a cavity plate, on which a first slider is slidably disposed. The first slider slides back and forth to form different cavities, which are used for subsequent injection after injection molding. A second slider is also slidably disposed on the first slider to form a particle groove on the bottom surface of the injection cavity. The first slider is provided with a first outlet cavity, a second outlet cavity, a first injection device, and a second injection device. The second slider is provided with a first tube and a second tube. The first tube is slidably disposed in the first outlet cavity, and the second tube is slidably disposed in the second outlet cavity. A first block is provided at the bottom of the first tube, leaving a channel opening. A horizontal plate is provided in the second outlet cavity, and a second block is slidably disposed on the horizontal plate. A limiting block is provided at the upper end of the second block. One end of a pull rope is provided at the lower end of the second tube, and the other end passes around the horizontal plate. The first glue inlet device is placed on the bottom surface of the limiting block, and the bottom of the limiting block and the second glue outlet cavity are both made of magnetic material. When the second slider slides down, the first block can block the glue outlet at the bottom of the first glue outlet cavity. At the same time, the second glue outlet cavity descends and attracts the second block upward, so that the second glue outlet cavity is unobstructed. The first glue inlet device includes a first piston tube and a first piston sleeve. The first piston tube is slidably disposed in the first piston sleeve. The upper end of the first piston tube is connected to the first glue outlet cavity, and the lower end is provided with a first piston ring. The upper end face of the first piston ring is provided with an opening. The first piston sleeve is disposed on the mold cavity plate, and the upper end of the first piston sleeve is connected to the external first material pipe. The second glue inlet device includes a second piston tube and a second piston sleeve. The second piston tube is slidably disposed in the second piston sleeve. The upper end of the second piston tube is connected to the second glue outlet cavity, and the lower end is provided with a second piston ring. The lower end of the second piston ring is provided with an opening. The second piston sleeve is disposed on the mold cavity plate, and the lower end of the second piston sleeve is connected to the external second material pipe.

[0006] Its beneficial effect is that the injection molding and glue injection processes can be completed in one mold. At the same time, when switching between injection molding and glue injection, the glue outlet can be automatically blocked, preventing the internal injection liquid or glue liquid from flowing out and avoiding the two from mixing and affecting product quality.

[0007] In the above scheme, preferably, the glue outlets at the bottom of the first glue outlet cavity and the second glue outlet cavity are conical, and the bottoms of the first block and the second block are also conical, and are configured to cooperate with the first glue outlet cavity and the second glue outlet cavity.

[0008] Its beneficial effect is that it makes it easier to seal the glue outlet.

[0009] Preferably, the upper die is further provided with a lifting device, the lifting device comprises a telescopic part and a top contact part, the telescopic part is arranged on the die cavity plate, the top contact part is arranged on the telescopic rod of the telescopic part, the first sliding block is provided with a first inclined block and a second inclined block, the top contact part is provided with a first top contact plate and a first pressure contact plate, the telescopic part is extended forward, the first top contact plate is in contact with the first inclined block, so that the first sliding block is upwardly slid, the telescopic part is retracted, and the first pressure contact plate is in contact with the second inclined block, so that the first sliding block is downwardly slid.

[0010] Preferably, the second sliding block is provided with a third inclined block and a fourth inclined block, the top contact part is further provided with a second top contact plate and a second pressure contact plate, the telescopic part is extended forward, the second top contact plate is in contact with the third inclined block, so that the second sliding block is upwardly slid, the telescopic part is retracted, and the second pressure contact plate is in contact with the fourth inclined block, so that the second sliding block is downwardly slid.

[0011] Preferably, the lifting device further comprises a limiting part, the limiting plate is provided with a first pressure plate and a second pressure plate, when the telescopic part is fully extended, the plane of the top contact part is in contact with the planes of the third inclined block and the first inclined block, and the first sliding block and the second sliding block are in contact with the first pressure plate and the second pressure plate respectively.

[0012] The beneficial effects are that the glue injection channel is located in the sliding block, when injection molding or glue injection is performed, the sliding block can be locked to avoid movement, so that the phenomenon of flash or product deformation caused by insufficient sliding block thrust is avoided.

[0013] Preferably, the first sliding block and the second sliding block are arranged in left-right symmetry, and the lifting device is also arranged in left-right symmetry.

[0014] Preferably, the limiting block is provided with a hollow hole, so as to facilitate the flow of glue liquid.

[0015] Preferably, the first block is connected with the bottom of the first glue pipe through an inclined plate, and the first block is provided with a through hole above the first block, so that the glue liquid in the first glue pipe can flow out from the through hole.

[0016] The beneficial effects of the present application are that the present application provides a plastic mold with a flow channel located in the sliding block, which can directly lock the sliding block during injection molding, so that the sliding block does not move, and at the same time, the switching of the glue outlet is realized when the sliding block moves to realize the conversion of the double-color mold cavity, and another glue outlet is blocked when the glue outlet is switched, and the internal glue liquid is not allowed to flow out during the blocking process, thereby improving the production efficiency and the quality of the product. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 The figure is a schematic diagram of the mold shape.

[0018] Figure 2 is a sectional view of the present application.

[0019] Figure 3 is an internal schematic view of the present application.

[0020] Figure 4 is a schematic view of the second slider of the present application.

[0021] Figure 5 is a schematic view of the first slider of the present application.

[0022] Figure 6 is a partial enlarged view of the second glue outlet cavity of the present application.

[0023] Figure 7 is a partial enlarged view of the first glue outlet cavity of the present application.

[0024] Figure 8 is a partial enlarged view of the second block of the present application.

[0025] Figure 9 is a partial enlarged view of the first piston tube of the present application.

[0026] Figure 10 is a partial enlarged view of the first block of the present application. DETAILED DESCRIPTION

[0027] The present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments: refer to Figures 1-10 The plastic mold with the flow channel inside the slider includes an upper mold and a lower mold, and the upper and lower molds form a complete mold after being combined, and the upper mold includes a mold cavity plate 2, a first slider 1, a second slider 3, and a lifting device 4, the first slider 1 is slidingly arranged on the mold cavity plate 2, the second slider 3 is slidingly arranged on the first slider 1, and the lifting device 4 is arranged on the mold cavity plate 2 and can control the first slider 1 and the second slider 3 to slide up and down.

[0028] The first slider 1 and the second slider 3 are slid downward to a position and cooperate with the mold cavity plate 2 to form a mold cavity of the injection mold, at which time injection of the injection liquid can complete injection molding, and the lifting device 4 controls the first slider 1 and the second slider 3 to slide upward to a position, which can form a soft glue mold cavity with the bottom surface of the injection molded plastic part, at which time injection of the soft glue can also complete the rubber coating work.

[0029] The upper die is further provided with a lifting device 4, which comprises a telescopic part 41, a top contact part 42 and a limiting part 43. The limiting part 43 is arranged on the die cavity plate 2 and is provided with a first pressing plate 431 and a second pressing plate 432. The telescopic part 41 is arranged on the die cavity plate 2. The top contact part 42 is arranged on the telescopic rod of the telescopic part 41 and is provided with a first top contact plate 421, a first pressing contact plate 422, a second top contact plate 423 and a second pressing contact plate 424. The first sliding block 1 is provided with a first inclined block 16 and a second inclined block 17. The second sliding block 3 is provided with a third inclined block 35 and a fourth inclined block 36.

[0030] The bottom surface of the first top contact plate 421 and the second top contact plate 423 is in contact with the die cavity plate 2 and is provided with an inclined surface at the front end. The telescopic part 41 can be an electric push rod or a hydraulic rod. When the telescopic part 41 is in the retracted state, the lower planes of the first pressing contact plate 422 and the second pressing contact plate 424 are respectively in contact with the upper planes of the second inclined block 17 and the fourth inclined block 36 of the first sliding block 1 and the second sliding block 3, so that the first sliding block 1 and the second sliding block 3 cooperate with the die cavity plate 2 to form the die cavity of the injection mold. At the same time, the top contact part 42 is slidingly arranged on the die cavity plate 2, so that after the top contact part 42 is in contact with the first sliding block 1 and the second sliding block 3, both of them cannot move backward. When the injection liquid is injected into the injection mold cavity, they can remain stationary, thereby avoiding the phenomenon that the injection part has flash due to insufficient thrust of the sliding block.

[0031] When the injection is completed, the telescopic part 41 is extended forward, and the front ends of the first top contact plate 421 and the second top contact plate 423 are in contact with the first inclined block 16 and the third inclined block 35, so that the first sliding block 1 and the second sliding block 3 slide upward. When the telescopic part 41 is completely pushed out, the upper planes of the first top contact plate 421 and the second top contact plate 423 are respectively in contact with the lower planes of the first inclined block 16 and the third inclined block 35. At this time, the first sliding block 1 and the second sliding block 3 are respectively in contact with the lower planes of the first pressing plate 431 and the second pressing plate 432. At this time, the glue is injected, and under the action of the limiting part 43, the first sliding block 1 and the second sliding block 3 will not move backward.

[0032] The second sliding block 3 is provided with a ejector pin. After the second sliding block 3 and the first sliding block 1 move backward, the moving distance of the second sliding block 3 is greater than that of the first sliding block 1, so that the ejector pin on the second sliding block 3 is retracted into the first sliding block 1. When the glue is injected, particles are formed on the surface of the soft glue, which further improves the touch of the product. After the injection of the glue is completed, the telescopic part 41 is retracted. At this time, the top contact part 42 is away from the lower sides of the first inclined block 16 and the third inclined block 35 and is in contact with the upper sides of the second inclined block 17 and the fourth inclined block 36, so that the first sliding block 1 and the second sliding block 3 are lowered. During the lowering process, because the lowering distance of the second sliding block 3 is greater than that of the first sliding block 1, the upper plane of the ejector pin on the second sliding block 3 is flush with the plane of the first sliding block 1, thereby ejecting the product.

[0033] The first slider 1 is further provided with a first glue outlet cavity 11, a second glue outlet cavity 12, a first glue inlet device 14 and a second glue inlet device 15, the second slider 3 is provided with a first glue pipe 31 and a second glue pipe 32, the first glue pipe 31 is slidingly arranged in the first glue outlet cavity 11, the second glue pipe 32 is slidingly arranged in the second glue outlet cavity 12, and the bottom of the first glue outlet cavity 11 and the bottom of the second glue outlet cavity 12 are provided with glue outlets, the second glue outlet cavity 12 is provided with a cross plate 13, and a space is left between the cross plate 13 and the second glue outlet cavity 12 for the glue to pass through, the cross plate 13 is slidingly provided with a second blocking block 34, the upper end of the second blocking block 34 is provided with a limiting block 341, and the limiting block 341 is provided with a hollow hole 3411, which can allow the glue to pass through, one end of a pull rope 3412 is arranged on the lower end face of the limiting block 341, the other end of the pull rope 3412 passes through the cross plate 13 downward and then passes through the cross plate 13 upward to be arranged on the lower end face of the second glue pipe 32, the second glue inlet device 15 comprises a second piston pipe 151 and a second piston sleeve 152, the second piston pipe 151 is slidingly arranged in the second piston sleeve 152, the second piston pipe 151 is provided with a passage in the middle, the upper end of the second piston pipe 151 is communicated with the second glue outlet cavity 12, and the lower end of the second piston pipe 151 is provided with a second piston ring 153, the lower end of the second piston ring 153 is provided with an opening, the second piston sleeve 152 is arranged on the mold cavity plate 2, and the lower end of the second piston sleeve 152 is connected with a second material pipe outside.

[0034] In the initial injection molding stage, the first slider 1 and the second slider 3 are in a merged state, at this time, the pull rope 3412 is in a relaxed state, and because the limiting block 341 and the bottom of the second glue pipe 32 have magnetism, when the first slider 1 and the second slider 3 are merged and the second glue pipe 32 is close to the limiting block 341, the limiting block 341 is adsorbed upward, so that the glue outlet at the lower end of the second glue outlet cavity 12 is in a smooth state, and the injection molding liquid can be injected into the mold cavity, after the completion of injection molding, the second slider 3 and the first slider 1 slide upward together, and the rising height of the second slider 3 is greater than the rising height of the first slider 1, so that the second glue pipe 32 rises, and one end of the pull rope 3412 connected with the bottom of the second glue pipe 32 rises together, thereby pulling the second blocking block 34 connected with the other end to slide downward, thereby plugging the glue outlet at the lower end of the second glue outlet cavity 12, and in the process of the upward movement of the second slider 3, the second piston pipe 151 is driven to slide upward, thereby increasing the space below the second piston pipe 151 and forming a vacuum inside, thereby sucking the injection molding liquid at the glue outlet of the second glue outlet cavity 12 back into the second piston sleeve 152, so as to achieve the purpose of plugging the glue outlet at the lower end of the second glue outlet cavity 12 while preventing the injection molding liquid from continuing to flow out, thereby avoiding the mixing of the two liquids in the next glue injection process, so as to affect the color or quality of the glue liquid.

[0035] The first rubber tube 31 is provided with a first plug 33, which is connected with the bottom of the first rubber tube 31 through an inclined plate, and a through hole is arranged above the first plug 33, so that the glue in the first rubber tube 31 can flow out from the through hole. The first glue feeding device 14 comprises a first piston tube 141 and a first piston sleeve 142. The first piston tube 141 is slidingly arranged in the first piston sleeve 142. The upper end of the first piston tube 141 is communicated with the first glue outlet cavity 11, and the lower end of the first piston tube 141 is provided with a first piston ring 143. A channel is arranged in the middle of the first piston tube 141. An opening is arranged on the upper end surface of the first piston ring 143. The first piston sleeve 142 is arranged on the mold cavity plate 2, and the upper end of the first piston sleeve 142 is connected with the first material pipe outside.

[0036] The first material pipe is connected with a glue coating pipe, which is used for injecting glue coating liquid. When the first sliding block 1 and the second sliding block 3 are in the combined state, the first plug 33 blocks the glue outlet at the bottom of the first glue outlet cavity 11, and the lower bottom surface of the first plug 33 is flush with the bottom surface of the first sliding block 1, so that the injection liquid cannot enter the cavity during injection. After the injection is completed, the second sliding block 3 is slid upward, and the sliding distance of the second sliding block 3 is greater than that of the first sliding block 1. During the upward sliding process, the conical surface of the first plug 33 is separated from the conical surface of the glue outlet. At this time, the glue outlet is in a free state, and the glue in the first rubber tube 31 can flow out from the glue outlet, so that the glue injection work can be performed. After the glue injection is completed, the first sliding block 1 and the second sliding block 3 are combined, and the second sliding block 3 drives the first piston ring 143 to slide downward, so that the space above the first piston sleeve 142 is increased, and the internal pressure is reduced, so that the glue in the first glue outlet cavity 11 is sucked back into the first piston sleeve 142, thereby realizing the sealing of the glue outlet at the bottom of the first glue outlet cavity 11 while preventing the glue in the first glue outlet cavity 11 from flowing out.

[0037] The working principle or use method is as follows:

[0038] Wherein in the initial injection stage, the first slider 1 and the second slider 3 are in the merged state, the lower planes of the first and second pressing plates 422 and 424 respectively press against the upper planes of the second and fourth inclined blocks 17 and 36 of the first and second sliders 1 and 3, so that the first and second sliders 1 and 3 cooperate with the mold cavity plate 2 to form the mold cavity of the injection mold, and the top contact 42 is slidingly arranged on the mold cavity plate 2, so that after the top contact 42 presses against the first and second sliders 1 and 3, they cannot move backward, and can remain stationary when the injection liquid is injected into the injection mold cavity, thereby avoiding the phenomenon that the injection part has flash due to insufficient thrust of the sliders to move backward, at this time, the pull rope 3412 is in a relaxed state, and because the limiting block 341 and the bottom of the second rubber tube 32 have magnetism, when the first and second sliders 1 and 3 are merged and the second rubber tube 32 is close to the limiting block 341, the limiting block 341 is upwardly adsorbed, so that the glue outlet at the lower end of the second glue outlet cavity 12 is in an unobstructed state, and the injection liquid can be injected into the mold cavity.

[0039] After the injection is completed, the telescopic member 41 is extended forward, the front ends of the first and second top contact plates 421 and 423 press against the first and third inclined blocks 16 and 35, so that the first and second sliders 1 and 3 slide upward, when the telescopic member 41 is completely pushed out, the upper planes of the first and second top contact plates 421 and 423 press against the lower planes of the first and third inclined blocks 16 and 35, at this time, the first and second sliders 1 and 3 press against the lower planes of the first and second pressing plates 431 and 432, at this time, the glue injection is performed, and under the action of the limiting member 43, the first and second sliders 1 and 3 will not move backward.

[0040] During the process of extending the telescopic member 41 forward, the second slider 3 slides upward together with the first slider 1, the second slider 3 has a greater upward height than the first slider 1, so that the second rubber tube 32 is lifted, one end of the pull rope 3412 connected to the bottom of the second rubber tube 32 is also lifted, thereby pulling the second blocking block 34 connected to the other end to slide downward, so as to block the glue outlet at the lower end of the second glue outlet cavity 12, and during the upward sliding of the second slider 3, the second piston tube 151 is driven to slide upward, so that the space below the second piston tube 151 is increased, a vacuum is formed inside, so as to suck the injection liquid at the glue outlet of the second glue outlet cavity 12 back into the second piston sleeve 152, thereby achieving the purpose of blocking the glue outlet at the lower end of the second glue outlet cavity 12 while preventing the injection liquid from continuing to flow out, thereby avoiding the mixing of the two liquids during the next glue injection process, so as to affect the color or quality of the glue coating liquid, and during the upward sliding, the conical surface of the first blocking block 33 is separated from the conical surface of the glue outlet, at this time, the glue outlet is in an unobstructed state, and the glue liquid in the first rubber tube 31 can flow out of the glue outlet, so as to perform the glue injection operation.

[0041] The second slider 3 is provided with a ejector pin. After the glue injection is completed, the telescopic member 41 is retracted, at this time, the top contact member 42 is away from below the first inclined block 16 and the third inclined block 35, and is pressed against the second inclined block 17 and the fourth inclined block 36, so as to make the first slider 1 and the second slider 3 descend. In the process of descending, because the descending distance of the second slider 3 is greater than that of the first slider 1, the top pin on the second slider 3 is leveled with the first slider 1, so as to eject the product. The second slider 3 drives the first piston ring 143 to slide downward, so as to increase the space above the first piston sleeve 142, reduce the internal pressure, and suck the glue liquid in the first glue outlet cavity 11 into the space above the first piston sleeve 142, so as to realize the sealing of the glue outlet at the bottom of the first glue outlet cavity 11, and prevent the glue liquid in the first glue outlet cavity 11 from flowing out.

[0042] The above embodiments are only used to illustrate the technical solutions of the present application, but not limit the present application; although the present application is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A plastic mold with a runner inside a slide, comprising an upper mold and a lower mold, characterized in that: The upper die comprises a die cavity plate, a first slider is slidably arranged on the die cavity plate, the first slider is slidably arranged on the first slider, thereby forming different die cavities for upward movement after injection molding is completed; A second slider is also slidably arranged on the first slider, for forming a granular groove on the bottom surface of the injection cavity, the first slider is provided with a first glue outlet cavity, a second glue outlet cavity, a first glue inlet device and a second glue inlet device, the second slider is provided with a first glue pipe and a second glue pipe, the first glue pipe is slidably arranged in the first glue outlet cavity, the second glue pipe is slidably arranged in the second glue outlet cavity, the first glue pipe is provided with a first plug at the bottom, and a passage is left, the second glue outlet cavity is provided with a horizontal plate, the second plug is slidably arranged on the horizontal plate, the upper end of the second plug is provided with a limiting block, one end of a pull rope is arranged at the lower end of the second glue pipe, the other end of the pull rope is arranged on the bottom surface of the limiting block by passing through the horizontal plate, and the limiting block and the bottom of the second glue outlet cavity are both magnetic materials, when the second slider is slid downward, the first plug can block the glue outlet at the bottom of the first glue outlet cavity, at the same time, the second glue outlet is lowered to adsorb the second plug upward, so that the second glue outlet is unobstructed; The first glue inlet device comprises a first piston pipe and a first piston sleeve, the first piston pipe is slidably arranged in the first piston sleeve, the upper end of the first piston pipe is communicated with the first glue outlet cavity, and the lower end of the first piston pipe is provided with a first piston ring, the upper end surface of the first piston ring is provided with an opening, the first piston sleeve is arranged on the die cavity plate, and the upper end of the first piston sleeve is connected with a first material pipe outside; The second glue inlet device comprises a second piston pipe and a second piston sleeve, the second piston pipe is slidably arranged in the second piston sleeve, the upper end of the second piston pipe is communicated with the second glue outlet cavity, and the lower end of the second piston pipe is provided with a second piston ring, the lower end of the second piston ring is provided with an opening, the second piston sleeve is arranged on the die cavity plate, and the lower end of the second piston sleeve is connected with a second material pipe outside; The upper die is also provided with a lifting device, the lifting device comprises a telescopic member and a top touch member, the telescopic member is arranged on the die cavity plate, the top touch member is arranged on the telescopic rod of the telescopic member, the first slider is provided with a first inclined block and a second inclined block, the top touch member is provided with a first top touch plate and a first pressure touch plate, the telescopic member is extended forward, the first top touch plate is in contact with the first inclined block, so that the first slider is slid upward, the telescopic member is retracted, the first pressure touch plate is in contact with the second inclined block, so that the first slider is slid downward.

2. The plastic mold of claim 1, wherein: The glue outlet at the bottom of the first glue outlet cavity and the second glue outlet cavity is conical, the bottom of the first plug and the second plug is also conical, and is matched with the first glue outlet cavity and the second glue outlet cavity.

3. The plastic mold of claim 1, wherein: The second slider is provided with a third inclined block and a fourth inclined block, the top touch member is also provided with a second top touch plate and a second pressure touch plate, the telescopic member is extended forward, the second top touch plate is in contact with the third inclined block, so that the second slider is slid upward, the telescopic member is retracted, the second pressure touch plate is in contact with the fourth inclined block, so that the second slider is slid downward.

4. The plastic mold of claim 3, wherein: The lifting device further comprises a limiting member, the limiting plate is provided with a first pressure plate and a second pressure plate, when the telescopic member is fully extended, the plane of the top touch member is in contact with the plane of the third inclined block and the first inclined block, at the same time, the first slider and the second slider are respectively in contact with the first pressure plate and the second pressure plate.

5. The plastic mold of claim 1, wherein: The first slider and the second slider are symmetrically arranged left and right, and the lifting device is also symmetrically arranged left and right.

6. The plastic mold of claim 1, wherein: The limiting block is provided with a hollow hole, facilitating the flow of glue solution.

7. The plastic mold of claim 1, wherein the runner is located inside the slider. The first block is connected with the bottom of the first rubber tube through an inclined plate, and the first block is provided with a through hole above the first block, and the glue solution in the first rubber tube can flow out from the through hole.

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