Anti-glue-overflow plastic mold

Abstract

The utility model relates to the field of plastic molds, and discloses an anti-glue-overflow plastic mold which comprises an upper mold, an extrusion assembly is slidably connected into the left end of the upper mold, the right portion of the extrusion assembly is in contact with a closed shaft, and the side end of the left portion of the closed shaft is fixedly connected with a sliding block. The side end of the sliding block is elastically connected to the interior of the upper mold through a first spring, the side end of the left portion of the upper mold is fixedly connected with an injection molding assembly, the exterior of the injection molding assembly is fixedly connected with a fixing groove, and the upper end and the lower end of the interior of the fixing groove are slidably connected with an upper sleeve and a lower sleeve correspondingly. And the rear parts of the upper sleeve and the lower sleeve are connected with a connecting pipe in a sliding manner. According to the plastic injection mold, the sealing shaft is pulled to slide through the first spring to communicate the connecting pipe with the middle of the upper mold, hot air is heated through the air inlet pipe, then plastic can be sprayed out from the interior of the middle of the upper mold and cannot be blocked, and during injection molding, the slope block can extrude the sealing shaft to seal a hole so that injection molding can be conducted.

Description

Technical Field

[0001] The utility model relates to the field of plastic molds, in particular to an anti-overflow plastic mold. Background Art

[0002] Injection molds are important tools used for plastic injection molding. The mold core and mold cavity are two basic parts of the mold. Their combination forms the shape of the desired product. When the mold is closed, a space is formed between the mold core and the mold cavity for filling and molding plastic products.

[0003] When the existing plastic mold is in use and the injection gun is injecting, the melted plastic is squeezed through the pores in the middle of the upper mold into the space in the middle of the mold by the auger inside the injection molding gun, solidified under the action of the condensation system, and then discharged through the extrusion system.

[0004] When the existing plastic mold is in use, when the injection molding gun is injecting into the upper mold, the plastic may cool and solidify in the hole in the middle of the upper mold, causing the upper mold to be blocked, which may cause the injection molding gun to overflow when injecting. Therefore, an anti-overflow plastic mold is proposed to solve the above problem. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides an anti-overflow plastic mold, aiming to improve the problem in the prior art that the upper mold may overflow due to plastic clogging.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an anti-overflow plastic mold, including an upper mold, an extrusion component is slidably connected to the left end of the upper mold, the right part of the extrusion component contacts a closed shaft, the left side end of the closed shaft is fixedly connected to a sliding block, the side end of the sliding block is elastically connected to the inside of the upper mold through a spring, the left side end of the upper mold is fixedly connected to an injection molding component, the outside of the injection molding component is fixedly connected to a fixed groove, the upper and lower ends of the interior of the fixed groove are respectively slidably connected to an upper sleeve and a lower sleeve, the rear parts of the upper sleeve and the lower sleeve are slidably connected to a connecting pipe, the side end of the upper sleeve is fixedly connected to a square groove, and the inside of the square groove is slidably connected to a fixed component.

[0007] As a further description of the above technical solution:

[0008] The fixing assembly comprises a positioning groove, an outer side end of the positioning groove is fixedly connected with a fixing bolt, and a side end of the fixing bolt is elastically connected with a clamping block through a second spring.

[0009] As a further description of the above technical solution:

[0010] The extrusion assembly includes a fixed column, the middle outer part of the fixed column is slidably connected with a ramp block, the upper and lower ends of the fixed column are fixedly connected to the middle inner part of the upper mold, and the outer part of the ramp block is slidably connected to the middle inner part of the upper mold.

[0011] As a further description of the above technical solution:

[0012] The injection molding assembly comprises a connecting plate, an injection molding gun is slidably connected to the middle inner portion of the right portion of the connecting plate, and the left portion of the connecting plate is fixedly connected to the outer portion of the right end of the upper mold.

[0013] As a further description of the above technical solution:

[0014] The outside of the closed shaft is slidably connected to the middle inner part of the upper mold, the side end of the closed shaft contacts the side end of the ramp block, one end of the spring one is slidably connected to the middle inner part of the upper mold, and the other end of the spring one is fixedly connected to the outer wall of the side end of the sliding block.

[0015] As a further description of the above technical solution:

[0016] The upper part of the upper sleeve is fixedly connected with an air inlet pipe, the interior of the fixing groove is fixedly connected to the exterior of the injection molding gun, and the lower part of the upper sleeve is in contact with the upper part of the lower sleeve.

[0017] As a further description of the above technical solution:

[0018] The left part of the connecting pipe is fixedly connected to the middle outer part of the right end of the connecting plate.

[0019] As a further description of the above technical solution:

[0020] The lower part of the square groove is slidably connected to the inside of the positioning groove.

[0021] As a further description of the above technical solution:

[0022] The side end of the positioning groove is fixedly connected to the outside of the side end of the lower sleeve.

[0023] As a further description of the above technical solution:

[0024] The outside of the side ends of the clamping block are slidably connected to the inside of the square groove and the positioning groove respectively, one end of the second spring is fixedly connected to the outside of the left end of the clamping block, and the other end of the second spring is fixedly connected to the outside of the fixing bolt.

[0025] The utility model has the following beneficial effects:

[0026] 1. In the utility model, the closing shaft is pulled to slide by a spring to connect the connecting pipe and the middle of the upper mold, and the hot air is heated by the air inlet pipe, and then sprayed out from the middle of the upper mold to spray the plastic so that it will not be blocked, and during injection molding, the inclined block can squeeze the closing shaft to close the hole so that it can be injected.

[0027] 2. In the utility model, the square groove can slide out of the positioning groove by pulling the clamping block, so that the upper sleeve and the lower sleeve can be disassembled, which is convenient for maintenance of the interior and the injection molding gun. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is an overall schematic diagram of an anti-overflow plastic mold proposed by the utility model;

[0029] Figure 2 This is a cross-sectional schematic diagram of an upper mold of an anti-overflow plastic mold proposed by the utility model;

[0030] Figure 3 A schematic diagram of an injection gun for an anti-overflow plastic mold proposed by the utility model;

[0031] Figure 4 This is a cross-sectional schematic diagram of a positioning groove of an anti-overflow plastic mold proposed by the utility model;

[0032] Figure 5 The utility model is a schematic diagram of a sliding block of an anti-overflow plastic mold.

[0033] Legend:

[0034] 1. Upper mold; 2. Connecting plate; 3. Upper sleeve; 4. Injection gun; 5. Fixed column; 6. Inclined block; 7. Sliding block; 8. Spring 1; 9. Closing shaft; 10. Fixed groove; 11. Connecting pipe; 12. Square groove; 13. Air inlet pipe; 14. Lower sleeve; 15. Positioning groove; 16. Fixed bolt; 17. Spring 2; 18. Snap-in block. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] Reference Figure 1 , Figure 2 and Figure 5The utility model provides an embodiment: an anti-overflow plastic mold, comprising an upper mold 1, an injection hole is provided in the middle of the upper mold 1 so that plastic can enter the space in the middle of the upper mold 1, an extrusion assembly is slidably connected to the left end of the upper mold 1, and the extrusion assembly comprises a fixed column 5, the fixed column 5 limits the inclined surface block 6 from completely sliding out of the upper mold 1, the middle outer portion of the fixed column 5 is slidably connected to the inclined surface block 6, the right portion of the inclined surface block 6 is an inclined surface that can be squeezed to make the closed shaft 9 slide to the position of the closed injection hole, and injection molding is performed to prevent overflow of glue, the upper and lower ends of the fixed column 5 are fixedly connected to the middle inner portion of the upper mold 1, the outer portion of the inclined surface block 6 is slidably connected to the middle inner portion of the upper mold 1, the upper mold 1 limits the horizontal sliding of the inclined surface block 6, the right portion of the extrusion assembly contacts the closed shaft 9, and the end of the closed shaft 9 close to the injection hole is an arc The outer side of the closed shaft 9 is slidably connected to the middle inner part of the upper mold 1, and the upper mold 1 limits the sliding of the closed shaft 9 within a fixed distance. The side end of the closed shaft 9 contacts the side end of the inclined block 6. The left side end of the closed shaft 9 is fixedly connected with a sliding block 7. The sliding block 7 can drive the closed shaft 9 to slide to the injection hole and can be connected to the connecting pipe 11, so that the cooled plastic can be blown out by wind force to prevent blockage and overflow of glue. The side end of the sliding block 7 is elastically connected to the inside of the upper mold 1 through a spring 8. The spring 8 can pull the sliding block 7 to drive the closed shaft 9 to slide to a position away from the injection hole. One end of the spring 8 is slidably connected to the middle inner part of the upper mold 1, and the other end of the spring 8 is fixedly connected to the outer wall of the side end of the sliding block 7. The spring 8 is subjected to the internal tension of the upper mold 1 to keep the sliding block 7 under tension and sliding within a fixed distance.

[0037] Reference Figure 1 , Figure 3 and Figure 4The left side end of the upper mold 1 is fixedly connected with an injection molding component, and the injection molding component includes a connecting plate 2. A circular hole is opened in the middle of the connecting plate 2 to connect the upper mold 1 and the injection molding gun 4. The injection molding gun 4 is slidably connected to the middle inner part of the right part of the connecting plate 2. The injection molding gun 4 can heat and melt the plastic particles and inject them into the middle injection molding hole of the upper mold 1. The left part of the connecting plate 2 is fixedly connected to the outside of the right end of the upper mold 1. The outside of the injection molding component is fixedly connected with a fixing groove 10. The fixing groove 10 can keep the upper sleeve 3 and the lower sleeve 14 fixed relative to the injection molding gun 4. The inside of the fixing groove 10 is fixedly connected to the outside of the injection molding gun 4. The upper sleeve 3 and the lower sleeve 14 are slidably connected to the upper and lower ends of the inside of the fixing groove 10 respectively. The upper sleeve 3 and the lower sleeve 14 can be snapped together to form a closed space that can be dissipated by the injection molding gun 4. The heat heats the wind and discharges it into the connecting tube 11, which can prevent the upper mold 1 from being too low in temperature and affecting the completion of injection molding. The lower part of the upper sleeve 3 is in contact with the upper part of the lower sleeve 14, and the upper part of the upper sleeve 3 is fixedly connected with an air inlet pipe 13, which can blow cold air into the middle of the upper sleeve 3 and the lower sleeve 14. The rear parts of the upper sleeve 3 and the lower sleeve 14 are slidably connected with a connecting tube 11, which can send hot air into the upper mold 1. The left part of the connecting tube 11 is fixedly connected to the middle outside of the right end of the connecting plate 2, and the side end of the upper sleeve 3 is fixedly connected with a square groove 12, which can be clamped with a fixed component to fix the upper sleeve 3 and the lower sleeve 14. The lower part of the square groove 12 is slidably connected to the inside of the positioning groove 15, and the inside of the square groove 12 is slidably connected with a fixed component.

[0038] Reference Figure 1 and Figure 4 The fixing assembly includes a positioning groove 15, and the positioning groove 15 can limit the horizontal sliding of the clamping block 18. The side end of the positioning groove 15 is fixedly connected to the outside of the side end of the lower sleeve 14, and the outer side end of the positioning groove 15 is fixedly connected to a fixing bolt 16. The fixing bolt 16 can limit the horizontal sliding of the clamping block 18 within a fixed distance. The side end of the fixing bolt 16 is elastically connected to the clamping block 18 through a spring 2 17. The clamping block 18 is T-shaped and can clamp the square groove 12 so that the upper sleeve 3 and the lower sleeve 14 are closed and fixed. The side end outside of the clamping block 18 is respectively slidably connected to the inside of the square groove 12 and the positioning groove 15, and one end of the spring 2 17 is fixedly connected to the left end outside of the clamping block 18, and the spring 2 17 keeps the clamping block 18 in a clamped state. The other end of the spring 2 17 is fixedly connected to the outside of the fixing bolt 16. When disassembly is required, the sliding clamping block 18 can quickly release the connection between the upper sleeve 3 and the lower sleeve 14, which is convenient for disassembly.

[0039] Working principle: During injection molding, the other end of the mold slides and squeezes the left part of the inclined block 6 to make it slide into the interior of the upper mold 1. The inclined surface of the inclined block 6 squeezes the closed shaft 9 to slide toward the injection hole so that both ends of the injection hole are closed. The closed shaft 9 drives the sliding block 7 to slide, and the sliding block 7 pulls the spring 18. The injection gun 4 injects the plastic into the injection hole for injection molding. After the injection molding is completed, the other end of the mold slides back to its original position. At this time, the spring 18 pulls the sliding block 7, and the sliding block 7 drives the closed shaft 9 to slide away from the injection hole, so that the connecting pipe 11 can be connected with the injection hole. The closed shaft 9 squeezes the inclined block 6 to slide to the left. At this time, the air inlet pipe 13 blows cold air into the upper sleeve 3 and the lower sleeve 1 4 is heated by the heat dissipated by the injection gun 4, and then enters the connection pipe 11, and is blown to the injection hole through the connection pipe 11 for dredging. When the injection gun 4 needs to be maintained, the clamping block 18 is pulled to squeeze the spring 17, so that the side end of the clamping block 18 slides out of the square groove 12, and the square groove 12 slides out of the positioning groove 15, so that the upper sleeve 3 and the lower sleeve 14 can be separated. After the maintenance is completed, the ends of the upper sleeve 3 and the lower sleeve 14 are slid into the fixing groove 10, so that the square groove 12 slides into the positioning groove 15, and the clamping block 18 is released so that the clamping block 18 slides into the square groove 12 under the compression of the spring 17.

[0040] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An anti-overflow plastic mold, comprising an upper mold (1), characterized in that: The left end of the upper mold (1) is slidably connected to an extrusion component, the right part of the extrusion component contacts a closed shaft (9), the left side end of the closed shaft (9) is fixedly connected to a sliding block (7), the side end of the sliding block (7) is elastically connected to the inside of the upper mold (1) through a spring (8), the left side end of the upper mold (1) is fixedly connected to an injection molding component, the outside of the injection molding component is fixedly connected to a fixed groove (10), the upper and lower ends of the fixed groove (10) are slidably connected to an upper sleeve (3) and a lower sleeve (14) respectively, the rear parts of the upper sleeve (3) and the lower sleeve (14) are slidably connected to a connecting pipe (11), the side end of the upper sleeve (3) is fixedly connected to a square groove (12), and the inside of the square groove (12) is slidably connected to a fixed component.

2. The anti-overflow plastic mold according to claim 1, characterized in that: The fixing assembly comprises a positioning groove (15), the outer side end of the positioning groove (15) is fixedly connected to a fixing bolt (16), and the side end of the fixing bolt (16) is elastically connected to a clamping block (18) via a second spring (17).

3. The anti-overflow plastic mold according to claim 1, characterized in that: The extrusion assembly comprises a fixed column (5), the middle outer portion of the fixed column (5) is slidably connected to a ramp block (6), the upper and lower ends of the fixed column (5) are fixedly connected to the middle inner portion of the upper mold (1), and the outer portion of the ramp block (6) is slidably connected to the middle inner portion of the upper mold (1).

4. The anti-overflow plastic mold according to claim 1, characterized in that: The injection molding assembly comprises a connecting plate (2), the middle interior of the right part of the connecting plate (2) is slidably connected to an injection molding gun (4), and the left part of the connecting plate (2) is fixedly connected to the outside of the right end of the upper mold (1).

5. The anti-overflow plastic mold according to claim 1, characterized in that: The outside of the closed shaft (9) is slidably connected to the middle interior of the upper mold (1), the side end of the closed shaft (9) is in contact with the side end of the inclined block (6), one end of the spring one (8) is slidably connected to the middle interior of the upper mold (1), and the other end of the spring one (8) is fixedly connected to the outer wall of the side end of the sliding block (7).

6. The anti-overflow plastic mold according to claim 1, characterized in that: The upper part of the upper sleeve (3) is fixedly connected to an air inlet pipe (13), the interior of the fixing groove (10) is fixedly connected to the exterior of the injection gun (4), and the lower part of the upper sleeve (3) is in contact with the upper part of the lower sleeve (14).

7. The anti-overflow plastic mold according to claim 1, characterized in that: The left portion of the connecting pipe (11) is fixedly connected to the middle outer portion of the right end of the connecting plate (2).

8. The anti-overflow plastic mold according to claim 1, characterized in that: The lower part of the square groove (12) is slidably connected to the inside of the positioning groove (15).

9. The anti-overflow plastic mold according to claim 2, characterized in that: The side end of the positioning groove (15) is fixedly connected to the outside of the side end of the lower sleeve (14).

10. The anti-overflow plastic mold according to claim 2, characterized in that: The outer side ends of the clamping block (18) are slidably connected to the inside of the square groove (12) and the positioning groove (15), respectively; one end of the second spring (17) is fixedly connected to the outer left end of the clamping block (18); and the other end of the second spring (17) is fixedly connected to the outside of the fixing bolt (16).

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