Plastic material molding injection mold

Abstract

The utility model discloses a plastic material molding injection mold, which comprises a support table, an upper mold and a lower mold, the lower mold is bolted on the upper surface of the support table, the upper mold is fixed on the surface of the lower mold through a bolt, one side of the upper mold is provided with a positioning component, and the positioning component is fixed on the support table. A lower die is arranged on one side of the upper die, a screw-out mechanism used for separating the upper die from the lower die is further arranged on the other side of the upper die, the screw-out mechanism comprises an extension block, an expansion sleeve and an expansion assembly, and the extension block is fixedly installed below the side wall of one side of the upper die. And an expansion sleeve is arranged in the extension block, an expansion assembly used for extruding the expansion sleeve to enable the expansion sleeve and the through hole in the surface of the extension block to be extruded is further arranged above the expansion sleeve, the extension block is taken out from the interior of the groove through the expansion assembly, then the upper mold and the lower mold are separated, and demolding by workers is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to an injection mold for forming plastic materials. Background Art

[0002] Molds are various molds and tools used in industrial production to obtain the desired products through methods such as injection molding, blow molding, extrusion, die casting or forging, smelting, and stamping. In short, molds are tools used to make shaped objects. Such tools are composed of various parts, and different molds are composed of different parts.

[0003] When injecting plastic materials, existing molds are difficult to open for demolding. Due to the high surface temperature of the mold, workers cannot manually separate the upper and lower molds. They need to wait for the mold to cool before demolding it, which is time-consuming and not conducive to continuous production.

[0004] After searching, the prior art has an authorization announcement number of CN211307206U, which discloses a plastic material molding injection mold, including a lower mold, four sides of the bottom of the lower mold are provided with a second groove, the two sides of the four second grooves are fixedly connected to the two ends of the four rotating shafts, the lower mold is rotatably connected to the movable rods through the four rotating shafts, the tops of the four movable rods are fixedly connected to the fixing columns on both sides of the top of the lower mold, the top of the lower mold is fixedly connected to the annular clamping block, the lower mold is clamped and connected to the upper mold through the annular clamping block, and the two sides of the bottom of the upper mold are provided with a first clamping groove. The utility model is a plastic material molding injection mold, the mutual cooperation of the fixed column, the first clamping groove, the annular clamping block and the annular clamping groove makes it convenient for the user to initially clamp the upper and lower molds, and the mutual cooperation of the movable rod, the fixing bolt, the fixing block and the rotating shaft makes it convenient for the user to fix the upper and lower molds, and also convenient for the user to disassemble and clean them.

[0005] The above patent has the problem of inconvenience in opening the mold during demoulding during use. Due to the high surface temperature of the mold, workers cannot manually separate the upper and lower molds. They need to wait for the mold to cool down before demoulding, which is time-consuming, not conducive to continuous production, and reduces production efficiency. Therefore, we need to propose a plastic material molding injection mold. Utility Model Content

[0006] The purpose of the present utility model is to provide an injection mold for molding plastic materials, which solves the problems raised in the above-mentioned background technology by providing an expansion component to extrude an expansion sleeve to expand the interior of an extension block, thereby removing the extension block from the interior of a groove opened on the surface of a fixed block fixedly installed on the side wall of the lower mold, and then separating the upper mold and the lower mold.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solution: a plastic material molding injection mold, comprising: a support platform, an upper mold, and a lower mold, the lower mold being bolted to the upper surface of the support platform, the upper mold being fixed to the surface of the lower mold by bolts, a positioning assembly being provided on one side of the upper mold, and a screw-out mechanism for separating and demolding the upper mold from the lower mold being provided on the other side of the upper mold;

[0008] The screw-out mechanism includes an extension block, an expansion sleeve and an expansion assembly. The extension block is fixedly installed below one side wall of the upper mold. A through hole is provided on the surface of the extension block and the bottom end of the extension block is set to a protruding cylindrical shape. The side wall of the lower mold is located below the extension block and is provided with a fixed block. A groove is provided on the surface of the fixed block. The outer arc surface below the expansion sleeve and the inner wall of the through hole on the surface of the extension block are pressed against each other.

[0009] Preferably, the outer arc surface where the bottom end of the expansion sleeve and the through hole on the surface of the extension block are pressed against each other is configured to be threaded.

[0010] Preferably, the expansion assembly includes a rotating rod, a movable sleeve and a support module. The middle part of the outer arc surface of the rotating rod is set to be threaded, and a thread groove is provided on the surface of the movable sleeve. The thread in the middle part of the outer arc surface of the rotating rod is threadedly connected to the thread groove. The support module is threadedly connected to the bottom of the movable sleeve. The bottom end of the rotating rod passes through the inner wall of the support assembly and the expansion sleeve and rotates and squeezes each other, and the bottom end of the rotating rod is rotatably connected to the inner bottom surface of the groove. A handle is provided on the top of the rotating rod.

[0011] Preferably, the support module includes a support sleeve, which is threadedly connected to the bottom of the movable sleeve. A placement groove is provided on the upper part of the support sleeve, a stop block is placed inside the placement groove, and the top end of the expansion sleeve is arranged inside the placement groove.

[0012] Preferably, the top diameter of the expansion sleeve is larger than the inner diameter of the supporting sleeve, and the top of the expansion sleeve contacts the bottom surface of the stop block.

[0013] Preferably, the positioning assembly includes a first vertical plate, a first sliding groove is provided on a side wall of the first vertical plate facing the upper mold, a first protrusion is slidingly provided inside the first sliding groove, and the first protrusion is fixedly installed on a side wall of the upper mold.

[0014] Preferably, a second protrusion is fixedly provided on the outer arc surface of the movable sleeve, a second vertical plate is provided on one side of the surface of the support platform, a second sliding groove is provided on the side wall of the second vertical plate facing the second protrusion, and the second protrusion is slidably connected to the inner wall of the second sliding groove.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] The utility model has an extension block fixedly installed on one side of the upper mold, and an expansion sleeve is provided inside the extension block. An expansion component is provided above the expansion sleeve for squeezing the expansion sleeve so that the expansion sleeve and the through hole on the surface of the extension block are squeezed. The extension block is taken out from the groove through the expansion component, and then the upper mold and the lower mold are separated, which is convenient for workers to demold.

[0017] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be achieved and obtained by the structures indicated in the description and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is the overall structural diagram of the utility model;

[0019] Figure 2 This is a cross-sectional structural diagram of the first vertical plate and the second vertical plate of the present invention;

[0020] Figure 3 This is a structural diagram of the upper mold and the lower mold separation of the utility model;

[0021] Figure 4 This is a disassembled structural diagram of the screw-out mechanism of the utility model;

[0022] Figure 5 This is a front view cutaway structural diagram of the screw-out mechanism of the utility model.

[0023] In the figure: 1. Support platform; 2. First vertical plate; 3. First slide groove; 4. First protrusion; 5. Upper mold; 6. Lower mold; 7. Fixed block; 8. Second vertical plate; 9. Second slide groove; 10. Second protrusion; 11. Unscrewing mechanism; 12. Extension block; 13. Groove; 14. Turning rod; 15. Handle; 16. Expansion sleeve; 17. Support sleeve; 18. Placement groove; 19. Abutment block; 20. Threaded groove; 21. Moving sleeve. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] The utility model provides: a plastic material molding injection mold, such as Figure 1-5As shown, it includes: a support platform 1, an upper mold 5 and a lower mold 6, the lower mold 6 is bolted to the upper surface of the support platform 1, the upper mold 5 is fixed to the surface of the lower mold 6 by bolts, a positioning component is provided on one side of the upper mold 5, and a rotating mechanism 11 for separating and demolding the upper mold 5 and the lower mold 6 is further provided on the other side of the upper mold 5;

[0026] The unscrewing mechanism 11 includes an extension block 12, an expansion sleeve 16 and an expansion assembly. The extension block 12 is fixedly installed below the side wall of one side of the upper mold 5. A through hole is provided on the surface of the extension block 12 and the bottom end of the extension block 12 is set to a protruding cylindrical shape. The side wall of the lower mold 6 is located below the extension block 12 and is provided with a fixed block 7. A groove 13 is provided on the surface of the fixed block 7. The outer arc surface below the expansion sleeve 16 and the inner wall of the through hole on the surface of the extension block 12 are pressed against each other.

[0027] An extension block 12 is fixedly installed below one side wall of the upper mold 5, a through hole is provided on the surface of the extension block 12, and the bottom end of the extension block 12 is set to a protruding cylindrical shape, so that when workers install the upper mold 5 and the lower mold 6, the bottom end of the extension block 12 enters into the interior of the groove 13 opened on the top surface of the fixed block 7, and the expansion sleeve 16 is squeezed by the expansion component, so that the expansion sleeve 16 and the through hole on the surface of the extension block 12 are squeezed against each other, and the extension block 12 is taken out from the interior of the groove 13, thereby driving the upper mold 5 and the lower mold 6 to separate, and realizing the demolding requirement.

[0028] The outer arc surface of the bottom end of the expansion sleeve 16 and the through hole on the surface of the extension block 12 are set to be threaded. By setting the outer arc surface of the bottom end of the expansion sleeve 16 and the through hole on the surface of the extension block 12 to be threaded, the expansion sleeve 16 can be squeezed by the expansion component, so that the outer arc surface of the expansion sleeve 16 and the inner wall of the through hole on the surface of the extension block 12 contact each other. The threaded shape increases the friction between the expansion sleeve 16 and the extension block 12, ensuring that the extension block 12 can be taken out from the inside of the groove 13 when the expansion component is rotated.

[0029] The expansion assembly includes a rotating rod 14, a movable sleeve 21 and a support module. The middle part of the outer arc surface of the rotating rod 14 is set to be threaded. A thread groove 20 is opened on the surface of the movable sleeve 21. The thread in the middle part of the outer arc surface of the rotating rod 14 is threadedly connected to the thread groove 20. The support module is threadedly connected to the bottom of the movable sleeve 21. The bottom end of the rotating rod 14 passes through the inner wall of the support assembly and the expansion sleeve 16 and rotates and squeezes each other. The bottom end of the rotating rod 14 is rotatably connected to the inner bottom surface of the groove 13. The top of the rotating rod 14 is penetrated by a handle 15.

[0030] By setting a thread in the middle of the outer arc surface of the rotating rod 14 and threadedly connecting it with the thread groove 20 opened on the surface of the movable sleeve 21, and the bottom end of the rotating rod 14 passes through the inner wall of the support assembly and the expansion sleeve 16 and rotates and squeezes each other, the expansion sleeve 16 is squeezed outward to expand and squeeze the through hole on the surface of the extension block 12, and the rotating rod 14 is rotated to make the movable sleeve 21 threadedly connected to the rotating rod 14 move upward, and then the extension block 12 is removed from the inside of the groove 13 to separate the upper mold 5 from the lower mold 6, and the lower mold 6 is disassembled from the surface of the support platform 1 to demold the model.

[0031] The support module includes a support sleeve 17, which is threadedly connected to the bottom of the movable sleeve 21. A placement groove 18 is opened on the upper part of the support sleeve 17, and a stop block 19 is placed inside the placement groove 18. The top end of the expansion sleeve 16 is set inside the placement groove 18.

[0032] The top diameter of the expansion sleeve 16 is larger than the inner diameter of the support sleeve 17 , and the top of the expansion sleeve 16 contacts the bottom surface of the stop block 19 .

[0033] By providing a support sleeve 17 that is sleeved on the outside of the expansion sleeve 16, the expansion sleeve 16 is supported and protected by the support sleeve 17 to prevent the expansion sleeve 16 and the extension block 12 from being excessively squeezed due to excessive rotation of the rotating rod 14, resulting in the expansion sleeve 16 bursting and causing damage to the equipment.

[0034] The positioning assembly includes a first vertical plate 2 , which has a first sliding groove 3 on the side wall facing the upper mold 5 , and a first protrusion 4 is slidingly provided inside the first sliding groove 3 , and the first protrusion 4 is fixedly installed on the side wall of the upper mold 5 .

[0035] The first protrusion 4 is slidably arranged inside the first sliding groove 3 so that the lifting direction of the upper mold 5 can be positioned by the first protrusion 4, thereby increasing the stability of the upper mold 5 when it is lifted.

[0036] A second protrusion 10 is fixedly provided on the outer arc surface of the movable sleeve 21, and a second vertical plate 8 is provided on one side of the surface of the support platform 1. A second sliding groove 9 is opened on the side wall of the second vertical plate 8 facing the second protrusion 10, and the second protrusion 10 is slidably connected to the inner wall of the second sliding groove 9.

[0037] A second protrusion 10 is fixedly provided on the outer arc surface of the movable sleeve 21, and the second protrusion 10 is slidably provided inside the second sliding groove 9 opened inside the second vertical plate 8 on one side, so that the direction of the movable sleeve 21 when being raised or lowered is determined by the second protrusion 10, thereby increasing the stability of the movable sleeve 21 when being raised or lowered.

[0038] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Plastic material molding injection mold, characterized in that, The invention comprises: a support platform (1), an upper mold (5) and a lower mold (6), wherein the lower mold (6) is bolted to the upper surface of the support platform (1), and the upper mold (5) is fixed to the surface of the lower mold (6) by bolts. A positioning assembly is provided on one side of the upper mold (5), and a screw-out mechanism (11) for separating and demolding the upper mold (5) and the lower mold (6) is also provided on the other side of the upper mold (5); The screw-out mechanism (11) comprises an extension block (12), an expansion sleeve (16) and an expansion assembly. The extension block (12) is fixedly installed below one side wall of the upper mold (5). A through hole is provided on the surface of the extension block (12) and the bottom end of the extension block (12) is configured to be a protruding cylindrical shape. A fixed block (7) is provided on the side wall of the lower mold (6) below the extension block (12). A groove (13) is provided on the surface of the fixed block (7). The outer arc surface below the expansion sleeve (16) is pressed against the inner wall of the through hole on the surface of the extension block (12).

2. The plastic material molding injection mold according to claim 1, characterized in that: The outer arc surface of the bottom end of the expansion sleeve (16) and the through hole on the surface of the extension block (12) pressed against each other is arranged in a threaded shape.

3. The plastic material injection mold according to claim 2, characterized in that: The expansion assembly comprises a rotating rod (14), a movable sleeve (21) and a support module. The middle portion of the outer arc surface of the rotating rod (14) is arranged to be threaded. A thread groove (20) is provided on the surface of the movable sleeve (21). The thread in the middle portion of the outer arc surface of the rotating rod (14) is threadedly connected to the thread groove (20). The support module is threadedly connected to the bottom of the movable sleeve (21). The bottom end of the rotating rod (14) passes through the inner wall of the support assembly and the expansion sleeve (16) to rotate and squeeze each other. The bottom end of the rotating rod (14) is rotatably connected to the inner bottom surface of the groove (13). The top end of the rotating rod (14) is penetrated by a handle (15).

4. The plastic material molding injection mold according to claim 3, characterized in that: The support module comprises a support sleeve (17), the support sleeve (17) is threadedly connected to the bottom of the movable sleeve (21), a placement groove (18) is provided on the upper part of the interior of the support sleeve (17), a stop block (19) is placed inside the placement groove (18), and the top end of the expansion sleeve (16) is arranged inside the placement groove (18).

5. The plastic material molding injection mold according to claim 4, characterized in that: The top diameter of the expansion sleeve (16) is larger than the inner diameter of the supporting sleeve (17), and the top of the expansion sleeve (16) and the bottom surface of the stop block (19) are in contact with each other.

6. The plastic material molding injection mold according to claim 1, characterized in that: The positioning assembly includes a first vertical plate (2), a first sliding groove (3) is provided on a side wall of the first vertical plate (2) facing the upper mold (5), a first protrusion (4) is slidably provided inside the first sliding groove (3), and the first protrusion (4) is fixedly installed on a side wall of the upper mold (5).

7. The plastic material molding injection mold according to claim 3, characterized in that: A second protrusion (10) is fixedly provided on the outer arc surface of the movable sleeve (21), a second vertical plate (8) is provided on one side of the surface of the support platform (1), a second sliding groove (9) is provided on a side wall of the second vertical plate (8) facing the second protrusion (10), and the second protrusion (10) is slidably connected to the inner wall of the second sliding groove (9).

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