Glue breaking opening structure and mold mechanism

Abstract

The utility model belongs to the technical field of molds, and particularly relates to a glue breaking opening structure and a mold mechanism, the glue breaking opening structure comprises a mold body, an insert pin assembly, a supporting block and a plurality of elastic pieces, the mold body is provided with a mold cavity used for manufacturing a workpiece to be cast and a containing groove communicated with the mold cavity, and the supporting block is installed in the containing groove. The supporting block is provided with a first through hole and a plurality of first mounting holes formed around the first through hole at intervals in the circumferential direction, and the elastic pieces are mounted in the first mounting holes in a one-to-one correspondence mode; the insert pin assembly is movably installed in the first through hole and provided with a convex part abutting against all the elastic pieces, and the end, away from the convex part, of the insert pin assembly extends into or retreats from the glue injection opening of the workpiece to be cast. According to the utility model, the glue breaking port structure can finish the work of the glue breaking port of the workpiece to be cast in advance, so that the quality of the workpiece to be cast is ensured; and the glue breaking opening structure is simple in structure and low in manufacturing cost.

Description

Technical Field

[0001] This utility model belongs to the field of mold technology, and in particular relates to a cut-off joint structure and mold mechanism. Background Technology

[0002] In the process of manufacturing plastic products using molds, liquid plastic is injected into the mold cavity through a sprue. After cooling, the liquid plastic is molded into a rigid plastic part within the mold cavity. The upper and lower molds are then separated, and the molded plastic part is removed from the lower mold cavity. After the plastic product is molded, liquid plastic tends to accumulate at the sprue. When the pull pin and insert assembly separate from the plastic product, the insert assembly may damage the plastic product, affecting its quality. Summary of the Invention

[0003] The present invention aims to solve the technical problem that the plastic product is easily damaged when the pull pin and insert pin assembly are separated from the plastic product together in the prior art, and provides a cut-off structure and mold mechanism.

[0004] To solve the above-mentioned technical problems, this utility model provides a glue break structure, including a mold body, a pin assembly, a support block, and multiple elastic elements; the mold body is provided with a mold cavity for manufacturing the workpiece to be cast and a receiving groove communicating with the mold cavity, and the support block is installed in the receiving groove;

[0005] The support block is provided with a first through hole and a plurality of first mounting holes spaced circumferentially around the first through hole. The elastic elements are installed in the first mounting holes one by one. The insert pin assembly is movably installed in the first through hole. The insert pin assembly is provided with a protrusion that abuts against all the elastic elements. The end of the insert pin assembly away from the protrusion extends into or out of the injection port of the workpiece to be cast.

[0006] Optionally, a limiting hole is provided between the support block and the mold body, and the protrusion is slidably installed in the limiting hole. The limiting hole and the protrusion are used to limit the travel of the insert assembly.

[0007] Optionally, the mold body is further provided with a sliding hole communicating with the limiting hole, and the insert pin assembly includes an insert pin body with the protrusion and a slider slidably installed in the sliding hole. The insert pin body is slidably installed in the first through hole, and the slider abuts against the insert pin body.

[0008] The slider is provided with a second through hole that connects to the inner hole of the pin body.

[0009] Optionally, the cut-off structure further includes a mold closing drive assembly, which drives the insert assembly to move within the first through hole.

[0010] Optionally, the mold closing drive assembly includes a mold closing drive member and a pressure block installed at the output end of the mold closing drive member; the mold closing drive member is used to drive the pressure block to move, so that the pressure block drives the insert pin assembly to move in the first through hole.

[0011] Optionally, the pressure block is further provided with a second mounting hole and a third mounting hole, and the mold closing drive assembly further includes a nozzle installed in the second mounting hole and a pull pin installed in the third mounting hole; the nozzle is used to input liquid casting into the inner hole of the pin assembly, and the pull pin is used to pull the solid part formed in the pin assembly.

[0012] Optionally, the mold body is provided with two first through holes spaced apart, and each first through hole is surrounded by a plurality of first mounting holes, and each first through hole is slidably installed with a pin assembly.

[0013] The mold body is also provided with a slurry groove located between the two pin assemblies, the slurry groove being connected to the inner holes of the two pin assemblies; the nozzle is used to input liquid casting material into the slurry groove.

[0014] Another embodiment of this utility model also provides a mold mechanism, including the above-described cut-off structure.

[0015] In this invention, a support block is installed in the receiving groove of the mold body. The support block has a first through hole and a plurality of first mounting holes spaced circumferentially around the first through hole. Elastic elements are installed in the first mounting holes one by one, and the insert pin assembly is movably installed in the first through hole. When the cut-off structure is in the mold-closed state, the end of the insert pin assembly away from the protrusion extends into the mold cavity of the mold body. The elastic element is in a compressed state, and liquid casting material can be injected into the mold cavity through the insert pin assembly to cast the workpiece to be cast. During the mold opening process of the cut-off structure, the elastic element will drive the insert pin assembly to move towards the end away from the mold cavity. After the insert pin assembly separates from the outlet of the workpiece to be cast, the pull pin will pull the solidified solid part inside the insert pin assembly, so that the solid part inside the insert pin assembly separates from the workpiece to be cast in the mold cavity. Thus, the cut-off structure can complete the cut-off work of the workpiece to be cast in advance, ensuring the quality of the workpiece to be cast. Furthermore, the cut-off structure has a simple structure and low manufacturing cost. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a cross-sectional view of the glue break structure provided in an embodiment of the present invention when it is in the mold-opening state;

[0019] Figure 2 This is a cross-sectional view of the glue break structure provided in an embodiment of the present invention when it is in the mold-closed state;

[0020] Figure 3 This is a partial structural diagram of the glue break structure provided in one embodiment of the present invention.

[0021] The reference numerals in the accompanying drawings are as follows:

[0022] 1. Mold body; 11. Mold cavity; 12. Receiving groove; 13. Sliding hole; 14. Injection groove; 2. Insert pin assembly; 21. Insert pin body; 211. Protrusion; 22. Slider; 3. Support block; 31. First through hole; 32. Limiting hole; 4. Elastic element; 5. Mold closing drive assembly; 51. Pressure block; 52. Squeegee; 53. Pull pin; 100. Workpiece to be cast. Detailed Implementation

[0023] To make the technical problems solved, the technical solutions, and the beneficial effects of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0024] In the description of this invention, it should be understood that the terms "longitudinal," "radial," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0025] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0026] like Figures 1 to 3 As shown, an embodiment of the present invention provides a glue-breaking port structure, including a mold body 1, a pin assembly 2, a support block 3, and a plurality of elastic elements 4; the mold body 1 is provided with a mold cavity 11 for manufacturing a workpiece 100 to be cast and a receiving groove 12 communicating with the mold cavity 11, and the support block 3 is installed in the receiving groove 12; it can be understood that the shape of the mold cavity 11 is set according to the shape of the workpiece 100 to be cast; in a specific embodiment, the workpiece 100 to be cast includes an outer cylinder and an inner cylinder disposed in the outer cylinder, and the glue injection port is disposed on the inner cylinder.

[0027] The support block 3 has a first through hole 31 and a plurality of first mounting holes spaced circumferentially around the first through hole 31. The elastic elements 4 are installed in the first mounting holes one by one. The insert pin assembly 2 is movably installed in the first through hole 31. The insert pin assembly 2 has a protrusion 211 that abuts against all the elastic elements 4. The end of the insert pin assembly 2 away from the protrusion 211 extends into or exits the injection port of the workpiece 100 to be cast. It can be understood that the elastic elements 4 include, but are not limited to, springs, etc., and the number of elastic elements 4 can be set according to actual needs (for example, 3, 4, etc.). The protrusion 211 can be an annular protrusion, and all the elastic elements 4 abut against the annular protrusion. The outer wall of the insert pin assembly 2 can also have a plurality of protrusions 211 spaced apart, and the elastic elements 4 abut against the protrusions 211 one by one.

[0028] In this invention, the support block 3 is installed in the receiving groove 12 of the mold body 1. The support block 3 is provided with a first through hole 31 and a plurality of first mounting holes spaced circumferentially around the first through hole 31. The elastic element 4 is installed in the first mounting hole one by one. The insert pin assembly 2 is movably installed in the first through hole 31. When the glue break structure is in the mold closed state, the end of the insert pin assembly 2 away from the protrusion 211 extends into the mold cavity 11 of the mold body 1. The elastic element 4 is in a compressed state, and liquid casting material can be injected into the mold cavity 11 through the insert pin assembly 2 and cast. During the mold opening process of the workpiece 100 to be cast, the elastic element 4 will drive the insert assembly 2 to move away from the mold cavity 11. After the insert assembly 2 separates from the outlet of the workpiece 100 to be cast, the pull pin 53 will pull the solidified part inside the insert assembly 2, so that the solid part inside the insert assembly 2 separates from the workpiece 100 to be cast in the mold cavity 11. Thus, the workpiece 100 to be cast can complete the workpiece 100 to be cast in advance, ensuring the quality of the workpiece 100 to be cast. Moreover, the workpiece 100 to be cast has a simple structure and low manufacturing cost.

[0029] In one embodiment, such as Figure 1 and Figure 2 As shown, a limiting hole 32 is provided between the support block 3 and the mold body 1. The protrusion 211 is slidably installed in the limiting hole 32. The limiting hole 32 and the protrusion 211 are used to limit the movement stroke of the insert assembly 2. It can be understood that the protrusion 211 can move in the limiting hole 32 and compress the elastic member 4. In this embodiment, by controlling the length of the limiting hole 32, the stroke of the elastic member 4 driving the insert assembly 2 can be controlled, avoiding the accident of the insert assembly 2 damaging the workpiece 100 to be cast due to excessive movement stroke.

[0030] In one embodiment, such as Figure 1 and Figure 2 As shown, the mold body 1 is also provided with a sliding hole 13 communicating with the limiting hole 32. The pin assembly 2 includes a pin body 21 with the protrusion 211 and a slider 22 slidably installed in the sliding hole 13. The pin body 21 is slidably installed in the first through hole 31, and the slider 22 abuts against the pin body 21. It can be understood that the slider 22 abuts against the end of the pin body 21 away from the mold cavity 11, and the slider 22 can restrict the pin body 21 in the limiting hole 32 and the first through hole 31.

[0031] The slider 22 has a second through hole that connects to the inner hole of the insert body 21. Understandably, liquid casting can be injected into the mold cavity 11 through the second through hole and the inner hole of the insert body 21; the mold closing drive can move the insert body 21 via the slider 22. In this embodiment, the design of the slider 22 ensures the stability of the movement of the insert body 21.

[0032] In one embodiment, such as Figure 1 and Figure 2 As shown, the cut-off structure also includes a mold closing drive assembly 5, which drives the insert pin assembly 2 to move within the first through hole 31. It can be understood that the mold closing drive assembly 5 includes, but is not limited to, pneumatic cylinders, hydraulic cylinders, etc., and can drive the insert pin assembly 2 to move.

[0033] In one embodiment, such as Figure 1 and Figure 2 As shown, the mold closing drive assembly 5 includes a mold closing drive component (not shown) and a pressure block 51 installed at the output end of the mold closing drive component. The mold closing drive component drives the pressure block 51 to move, so that the pressure block 51 drives the insert pin assembly 2 to move in the first through hole 31. It can be understood that the mold closing drive component includes, but is not limited to, a pneumatic cylinder, a hydraulic cylinder, etc. When the mold closing drive component drives the pressure block 51 to push the slider 22, the slider 22 will drive the insert pin body 21 to move. The protrusion 211 of the insert pin body 21 will compress the elastic member 4, and the end of the insert pin body 21 away from the protrusion 211 will extend into the injection port of the workpiece 100 to be cast. When the mold closing drive component drives the pressure block 51 away from the slider 22, the slider 22 will release the restriction on the insert pin body 21, the elastic member 4 will drive the insert pin body 21 to move, and the insert pin body 21 will separate from the injection port of the workpiece 100 to be cast. In this embodiment, the pressure block 51 can smoothly push the insert body 21.

[0034] In one embodiment, such as Figure 1 and Figure 2As shown, the pressure block 51 is also provided with a second mounting hole and a third mounting hole. The mold closing drive assembly 5 further includes a nozzle 52 installed in the second mounting hole and a pull pin 53 installed in the third mounting hole. The nozzle 52 is used to input liquid casting into the inner hole of the pin assembly 2, and the pull pin 53 is used to pull the solid part formed in the pin assembly 2. It can be understood that the liquid casting is injected into the mold cavity 11 through the nozzle 52 and the pin assembly 2. When the mold opening structure is in the mold opening state, the pull pin 53 will drive the solidified solid part in the pin assembly 2 to move, so that the solidified solid part in the pin assembly 2 is separated from the workpiece 100 to be cast in the mold cavity 11.

[0035] In one embodiment, such as Figure 1 and Figure 2 As shown, the mold body 1 has two spaced-apart first through holes 31, and each first through hole 31 is surrounded by multiple first mounting holes. Each first through hole 31 has a slidingly mounted insert pin assembly 2. The mold body 1 also has an injection groove 14 located between the two insert pin assemblies 2, which connects to the inner holes of the two insert pin assemblies 2. The nozzle 52 is used to inject liquid casting into the injection groove 14. Understandably, the nozzle 52 injects liquid casting into the injection groove 14, and the liquid casting in the injection groove 14 can flow into the inner holes of the two insert pin assemblies 2. The liquid casting in the two insert pin assemblies 2 is then diverted into the two mold cavities 11, thus enabling the cut-off structure to complete the casting of two workpieces 100, improving the casting efficiency of the cut-off structure.

[0036] Another embodiment of this utility model also provides a mold mechanism, including the above-described cut-off structure.

[0037] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included within the protection scope of the present invention.

Claims

1. A structure for a broken glue joint, characterized in that, It includes a mold body, a pin assembly, a support block, and multiple elastic elements; the mold body is provided with a mold cavity for manufacturing the workpiece to be cast and a receiving groove communicating with the mold cavity, and the support block is installed in the receiving groove; The support block is provided with a first through hole and a plurality of first mounting holes spaced circumferentially around the first through hole. The elastic elements are installed in the first mounting holes one by one. The insert pin assembly is movably installed in the first through hole. The insert pin assembly is provided with a protrusion that abuts against all the elastic elements. The end of the insert pin assembly away from the protrusion extends into or out of the injection port of the workpiece to be cast.

2. The adhesive break structure according to claim 1, characterized in that, A limiting hole is provided between the support block and the mold body, and the protrusion is slidably installed in the limiting hole. The limiting hole and the protrusion are used to limit the movement stroke of the insert assembly.

3. The adhesive break structure according to claim 2, characterized in that, The mold body is also provided with a sliding hole that communicates with the limiting hole. The insert pin assembly includes an insert pin body with the protrusion and a slider that is slidably installed in the sliding hole. The insert pin body is slidably installed in the first through hole, and the slider abuts against the insert pin body. The slider is provided with a second through hole that connects to the inner hole of the pin body.

4. The adhesive break structure according to claim 1, characterized in that, The break-off structure also includes a mold closing drive assembly, which is used to drive the insert pin assembly to move in the first through hole.

5. The adhesive break structure according to claim 4, characterized in that, The mold closing drive assembly includes a mold closing drive component and a pressure block installed at the output end of the mold closing drive component; the mold closing drive component is used to drive the pressure block to move, so that the pressure block drives the insert pin assembly to move in the first through hole.

6. The adhesive break structure according to claim 5, characterized in that, The pressure block is also provided with a second mounting hole and a third mounting hole. The mold closing drive assembly also includes a nozzle installed in the second mounting hole and a pull pin installed in the third mounting hole. The nozzle is used to input liquid casting into the inner hole of the pin assembly, and the pull pin is used to pull the solid part formed in the pin assembly.

7. The adhesive break structure according to claim 6, characterized in that, The mold body is provided with two first through holes spaced apart. Each first through hole is surrounded by multiple first mounting holes. Each first through hole is slidably installed with a pin assembly. The mold body is also provided with a slurry groove located between the two pin assemblies, the slurry groove being connected to the inner holes of the two pin assemblies; the nozzle is used to input liquid casting material into the slurry groove.

8. A mold mechanism, characterized in that, Includes the glue break structure as described in any one of claims 1 to 7.

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