A kind of injection molding device for helmet shell

Abstract

This utility model discloses a safety helmet shell injection molding device, relating to the field of safety helmet injection molding technology. The device includes a workbench with a support frame mounted in the middle. A moving component is mounted on the workbench, a first drive component is installed inside the workbench, and second drive components are mounted at both ends of the workbench. Shearing components are mounted at both ends of the second drive components. An electric push rod is mounted on the support frame, with an upper mold mounted at the lower end of the electric push rod. Lower molds are mounted at both ends of the moving component. This utility model uses the moving component to reciprocate, driving the lower molds to correspond with the upper mold and shearing components respectively. Injection molding is performed by merging the lower and upper molds. The shearing components then remove the sprue marks from the injection-molded safety helmet shell. This device can autonomously and smoothly perform injection molding and sprue mark removal, eliminating the need for manual sprue mark removal and increasing production speed.

Description

Technical Field

[0001] The utility model belongs to the technical field of injection molding of safety helmets, and in particular relates to an injection molding device for a safety helmet shell. Background Art

[0002] Safety helmets are hats that protect people's heads from falling objects and other specific factors. Safety helmets are composed of a helmet shell, a hat lining, a chin strap and accessories. Safety helmets are divided into two categories according to their uses: general operation (Y-type) safety helmets and special operation (T-type) safety helmets. The shell of a safety helmet is the most important part of a safety helmet. Usually, the shell of a safety helmet is made of ABS material, which is a thermoplastic polymer structural material with high strength, good toughness and easy processing and molding, also known as ABS resin.

[0003] In the prior art, an injection molding machine is generally used to produce the outer shell of a helmet. The raw materials are injected into the mold of the outer shell of the helmet through the injection molding machine to make the outer shell of the helmet. During the injection molding production, there is usually an extra piece of sprue waste at the injection port position of the outer shell of the helmet, which needs to be cut off manually, wasting manpower and time, resulting in slow production progress, reduced work efficiency, and inability to guarantee output.

[0004] Currently, no effective solution has been proposed for the problems in the related technologies. Utility Model Content

[0005] In view of the problems in the related technology, the utility model proposes an injection molding device for a helmet shell to overcome the above technical problems existing in the existing related technology.

[0006] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] The utility model is a device for injection molding a helmet shell, comprising a workbench, a support frame is installed in the middle of the workbench, a moving assembly is installed on the workbench, a first driving assembly is installed inside the workbench, second driving assemblies are installed at both ends of the workbench, shearing assemblies are installed at both ends of the second driving assembly, an electric push rod is installed on the support frame, an upper mold is installed at the lower end of the electric push rod, and lower molds are installed at both ends of the moving assembly;

[0008] The electric push rod is used to drive the upper mold to fit with the lower mold. An injection pipe is installed on the upper mold to inject the raw material into the cavity formed by the upper mold and the lower mold. The first driving component can drive the moving component to drive the lower mold at one end of the moving component to correspond to the shearing component at one end. The second driving component can drive the shearing components at both ends to move closer to the middle to cut off the excess water outlet on the injection-molded helmet shell.

[0009] Furthermore, a first slide groove is provided on the workbench, and the moving component includes a moving plate, a sliding block is installed at the lower end of the moving plate, and the sliding block is slidably installed in the first slide groove.

[0010] Furthermore, first springs are installed at four corners of the lower surface of the lower mold, and the lower end of the first spring is installed on the upper surface of the movable plate.

[0011] Furthermore, a driving rack is installed on the lower surface of the sliding block, and the first driving component includes a first motor, which is installed inside the workbench. A driving shaft is installed on the axis of the first motor, and a gear is installed on the moving axis of the driving shaft, and the gear is meshed with the driving rack.

[0012] Furthermore, second slide grooves are symmetrically opened on both sides of both ends of the workbench, and the shearing assembly includes an L-shaped sliding rod, the lower end of the L-shaped sliding rod is slidably installed in the second slide groove, and a plurality of positioning rods are slidably installed on the upper end of the L-shaped sliding rod, a shearing plate is installed at one end of the positioning rod, a second spring is installed around the positioning rod, and a shearing blade is installed at the lower end of the shearing plate.

[0013] Furthermore, the second driving assembly includes a second motor, and the second motors are installed on one side of the workbench. A rotating rod is installed on the axis of the second motor. One end of the rotating rod passes through the workbench and extends into the interior, and is rotatably installed on the inner wall of the other side of the workbench. Threaded sections are provided at both ends of the rotating rod, and the thread directions of the threaded sections at both ends are different. The lower ends of the L-shaped sliding rods respectively pass through and are threadedly installed on the threaded sections, and the L-shaped sliding rods at both ends can move close to the middle of the rotating rod.

[0014] The utility model has the following beneficial effects:

[0015] 1. The utility model can drive the moving component to move through the first driving component, so that it reciprocates and drives the lower molds at both ends to correspond to the upper mold and the shearing component respectively, so as to perform injection molding operation by merging the lower mold and the upper mold, and then the lower mold corresponds to the shearing component, and the shearing component is driven by the second driving component to cut the sprue of the helmet shell after its injection molding, so that the device can independently, continuously and smoothly perform injection molding operations and sprue cutting operations, and no manual cutting of injection molding sprues is required, which saves manpower and time, improves production speed, and increases output.

[0016] 2. The utility model drives the helmet shell injection molded on the lower mold at one end thereof to correspond to its shear blade through the movable plate, and drives the rotating rod to rotate by driving the second motor, so that the L-shaped sliding rods installed at both ends thereof can move toward the middle of the rotating rod under the action of the threaded section, thereby driving the shear plates at both ends to move together, and the redundant water outlets formed by injection molding are cut off by the shear blades. Because its shear plate is installed on the positioning rod, and the positioning rod is surrounded by a second spring, during the cutting operation, the second spring will generate a resisting force through compression, so that under the action of the second spring, the shear blade can better perform the water outlet cutting operation, thereby achieving the goal that the device can autonomously cut water outlet waste and improve work efficiency.

[0017] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the utility model embodiments, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0020] Figure 2 This is the second schematic diagram of the three-dimensional structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the internal structure of the workbench of the utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the mobile component of the utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the first driving component of the utility model;

[0024] Figure 6This is a schematic diagram of the shear assembly structure of the utility model;

[0025] Figure 7 For the utility model Figure 6 Schematic diagram of the local enlarged structure at point A in the middle.

[0026] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0027] 1. Workbench; 2. Support frame; 3. Moving assembly; 4. First drive assembly; 5. Second drive assembly; 6. Shearing assembly; 7. Electric push rod; 8. Upper mold; 9. Lower mold; 10. Injection pipe; 11. First slide groove; 12. Moving plate; 13. Sliding block; 14. First spring; 15. Driving rack; 16. First motor; 17. Driving shaft; 18. Gear; 19. Second slide groove; 20. L-shaped sliding rod; 21. Positioning rod; 22. Shearing plate; 23. Second spring; 24. Shearing blade; 25. Second motor; 26. Rotating rod; 27. Threaded segment. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the utility model embodiments to clearly and completely describe the technical solutions in the utility model embodiments. Obviously, the described embodiments are only part of the utility model embodiments, 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.

[0029] In the description of the present utility model, it should be understood that the terms "opening", "upper", "lower", "top", "middle", "inside" and the like indicating orientation or positional relationship are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0030] See also Figure 1-Figure 7 As shown, the utility model is a helmet shell injection molding device, comprising a workbench 1, a support frame 2 is installed in the middle of the workbench 1, a moving component 3 is installed on the workbench 1, a first driving component 4 is installed inside the workbench 1, second driving components 5 are installed at both ends of the workbench 1, shearing components 6 are installed at both ends of the second driving component 5, an electric push rod 7 is installed on the support frame 2, an upper mold 8 is installed at the lower end of the electric push rod 7, and lower molds 9 are installed at both ends of the moving component 3;

[0031] The electric push rod 7 is used to drive the upper mold 8 to fit with the lower mold 9. An injection pipe 10 is installed on the upper mold 8 to inject the raw material into the cavity formed by the upper mold 8 and the lower mold 9. The first driving component 4 can drive the moving component 3 to drive the lower mold 9 at one end of the moving component 3 to correspond to the shearing component 6 at one end. The second driving component 5 can drive the shearing components 6 at both ends to move closer to the middle to cut off the excess water outlet on the injection-molded helmet shell.

[0032] In actual use, the lower mold 9 at one end is first matched with the upper mold 8, so that the electric push rod 7 drives the upper mold 8 to move downward and merge with the lower mold 9 to form a cavity, and then the raw material is transported into the cavity through the injection pipe 10, so that the helmet shell is injection molded. After the helmet shell is injection molded, the upper mold 8 can be moved to the original position by the electric push rod 7, and then the moving component 3 can be driven to move by the first driving component 4, so that the helmet shell that has been injected on the lower mold 9 corresponds to the shearing component 6 at the same end, so that the shearing component 6 is driven to the lower mold by the second driving component 5. 9 is moved closer to the middle part, and the excess sprue on the helmet shell is cut off, and the movement of the moving component 3 will also drive the lower mold 9 at the other end to correspond with the upper mold 8, so that the electric push rod 7 can be driven to perform the next round of injection molding. After the injection molding operation at this end is completed, the lower mold 9 at this end can also be matched with the shearing component 6 at the same end through the moving component 3, so as to perform the sprue cutting operation on the helmet shell that has been injection molded at this end, and at this time, the lower mold 9 at the other end will correspond with the upper mold 8 again, so that the device can smoothly and continuously perform injection molding and shearing operations, thereby improving production efficiency.

[0033] The utility model can drive the moving component 3 to move through the first driving component 4, so that it reciprocates and drives the lower molds 9 at both ends to correspond to the upper mold 8 and the shearing component 6 respectively, so that the injection molding operation is performed by combining the lower mold 9 and the upper mold 8, and then the lower mold 9 is made to correspond to the shearing component 6, and the shearing component 6 is driven by the second driving component 5 to cut the sprue of the helmet shell after its injection molding, so that the device can independently, coherently and smoothly perform the injection molding operation and the sprue cutting operation, and there is no need to manually cut the injection molding sprue, which saves manpower and time, improves production speed, and increases output.

[0034] In one embodiment, for the above-mentioned workbench 1, a first slide groove 11 is opened on the workbench 1, and the moving component 3 includes a moving plate 12, and a sliding block 13 is installed at the lower end of the moving plate 12, and the sliding block 13 is slidably installed in the first slide groove 11.

[0035] By opening the first slide groove 11, the sliding block 13 can drive the movable plate 12 to slide back and forth, thereby changing the lower mold 9 at one end to correspond to its upper mold 8 to perform injection molding operations, and at the same time making the lower mold 9 at the other end correspond to its shear component 6 to perform water outlet cutting operations.

[0036] In one embodiment, for the lower mold 9 , first springs 14 are installed at four corners of the lower surface of the lower mold 9 , and the lower end of the first spring 14 is installed on the upper surface of the moving plate 12 .

[0037] By installing the first spring 14 on the lower surface of the lower mold 9, when the lower mold 9 is combined with the upper mold 8 for injection molding, the first spring 14 will be compressed, thereby releasing the elastic force, so that the upper mold 8 and the lower mold 9 can be combined better and the quality of the injection-molded helmet shell can be better.

[0038] In one embodiment, for the above-mentioned sliding block 13, a driving rack 15 is installed on the lower surface of the sliding block 13, and the first driving component 4 includes a first motor 16, and the first motor 16 is installed inside the workbench 1. A driving shaft 17 is installed on the axis of the first motor 16, and a gear 18 is installed on the moving axis of the driving shaft 17, and the gear 18 is meshed with the driving rack 15.

[0039] By driving the first motor 16 , the gear 18 is driven to rotate through the driving shaft 17 , so that the gear 18 drives the rack meshing therewith to move, thereby driving the sliding block 13 to slide in the first sliding groove 11 .

[0040] In one embodiment, for the above-mentioned workbench 1, second slide grooves 19 are symmetrically opened on both sides of the two ends of the workbench 1, and the shearing assembly 6 includes an L-shaped sliding rod 20, and the lower end of the L-shaped sliding rod 20 is slidably installed in the second slide groove 19, and a plurality of positioning rods 21 are slidably installed on the upper end of the L-shaped sliding rod 20, and a shearing plate 22 is installed at one end of the positioning rod 21, and a second spring 23 is installed around the positioning rod 21, and a shearing blade 24 is installed at the lower end of the shearing plate 22.

[0041] When the movable plate 12 drives the helmet shell injection molded on the lower mold 9 at one end to correspond to its shear blade 24, the L-shaped sliding rods 20 at both ends can be driven by the second driving component 5 to move closer to the middle of the helmet shell, thereby driving the shear plates 22 at both ends to move closer, and the redundant water outlets formed by injection molding are cut off by the shear blade 24. Because its shear plate 22 is installed on the positioning rod 21, and the positioning rod 21 is surrounded by a second spring 23, during the cutting operation, the second spring 23 will generate a resisting force through compression, and then under the action of its second spring 23, its shear blade 24 can better perform the water outlet cutting operation.

[0042] In one embodiment, for the above-mentioned second driving component 5, the second driving component 5 includes a second motor 25, and the second motors 25 are all installed on one side of the workbench 1. The axis of the second motor 25 is installed with a rotating rod 26, one end of the rotating rod 26 passes through the workbench 1 and extends into the interior, and is rotatably installed on the inner wall of the other side of the workbench 1, and both ends of the rotating rod 26 are provided with threaded sections 27, and the thread directions of the threaded sections 27 at both ends are different, and the lower ends of the L-shaped sliding rods 20 respectively pass through and are threadedly installed on the threaded sections 27, and the L-shaped sliding rods 20 at both ends can be close to the middle of the rotating rod 26.

[0043] By driving the second motor 25 to drive the rotating rod 26 to rotate, the L-shaped sliding rods installed at both ends can move toward the middle of the rotating rod 26 under the action of the threaded section 27, thereby driving the shear plates 22 at both ends to move together, and the redundant water outlet formed by injection molding is cut off by the shear blade 24.

[0044] In summary, with the aid of the above technical solution of the utility model, the lower mold 9 at one end is first matched with the upper mold 8, so that the electric push rod 7 drives the upper mold 8 to move downward and merge with the lower mold 9 to form a cavity, and the first spring 14 is installed on the lower surface of the lower mold 9, so that when the lower mold 9 is merged with the upper mold 8 for injection molding, the first spring 14 will be compressed, thereby releasing the elastic force, so that the upper mold 8 and the lower mold 9 can be merged better, and then the raw material is transported into the cavity through the injection molding pipe 10, so that the outer surface of the safety helmet is Shell injection molding, and when the helmet shell is injection molded, the upper mold 8 can be moved to the original position by the electric push rod 7, so as to drive the first motor 16, so that it drives the gear 18 to rotate through the driving shaft 17, so that the gear 18 drives the rack meshing with it to move, and then drives the sliding block 13 to slide in the first slide groove 11, so that the moving plate 12 drives the helmet shell injection molded on the lower mold 9 at one end to move, so that it corresponds to the shear assembly 6 at the same end, thereby driving the second motor 25 to drive The rotating rod 26 rotates so that the L-shaped sliding rods installed at both ends can move closer to the middle of the rotating rod 26 under the action of the threaded section 27, thereby driving the shear plates 22 at both ends to move closer, and the redundant nozzles formed by injection molding are cut off by the shear blades 24. Since the shear plates 22 are installed on the positioning rod 21, and the positioning rod 21 is surrounded by the second spring 23, during the cutting operation, the second spring 23 will generate a resisting force through compression, and then under the action of the second spring 23, the shear blades 24 can better perform the cutting operation of the nozzle. , and the movement of the moving component 3 will also drive the lower mold 9 at the other end to correspond to the upper mold 8, so that the electric push rod 7 can be driven to perform the next round of injection molding operation. After the injection molding operation at this end is completed, the lower mold 9 at this end can also be matched with the shearing component 6 at the same end through the moving component 3, so as to perform the sprue cutting operation on the helmet shell that has been injection molded, and at this time, the lower mold 9 at the other end will correspond to the upper mold 8 again, so that the device can smoothly and continuously perform injection molding and shearing operations, thereby improving production efficiency.

[0045] Through the above technical scheme, 1. The first driving component 4 can drive the moving component 3 to move, so that it reciprocates and drives the lower molds 9 at both ends to correspond to the upper mold 8 and the shearing component 6 respectively, so that the injection molding operation is performed by merging the lower mold 9 and the upper mold 8, and then the lower mold 9 is made to correspond to the shearing component 6, and the second driving component 5 drives its shearing component 6 to perform the water outlet cutting operation on the injection-molded helmet shell, so that the device can autonomously, coherently and smoothly perform the injection molding operation and the water outlet cutting operation, and no longer needs to manually cut the injection nozzle, which saves manpower and time, improves production speed, and increases output; 2. The helmet shell injected and molded on the lower mold 9 at one end is driven by the moving plate 12 Corresponding to its shear blade 24, by driving the second motor 25 to drive its rotating rod 26 to rotate, the L-shaped sliding rods installed at both ends can move closer to the middle of the rotating rod 26 under the action of the threaded section 27, thereby driving the shear plates 22 at both ends to move closer, and the redundant water outlets formed by injection molding are cut off by the shear blade 24. Because its shear plate 22 is installed on the positioning rod 21, and the positioning rod 21 is surrounded by a second spring 23, during the cutting operation, the second spring 23 will generate a resisting force through compression, so that under the action of the second spring 23, the shear blade 24 can better perform the water outlet cutting operation, thereby achieving the goal that the device can autonomously cut off water outlet waste and improve work efficiency.

[0046] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0047] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A helmet shell injection molding device, comprising a workbench (1), characterized in that: A support frame (2) is installed in the middle of the workbench (1), a moving assembly (3) is installed on the workbench (1), a first driving assembly (4) is installed inside the workbench (1), second driving assemblies (5) are installed at both ends of the workbench (1), shearing assemblies (6) are installed at both ends of the second driving assembly (5), an electric push rod (7) is installed on the support frame (2), an upper mold (8) is installed at the lower end of the electric push rod (7), and lower molds (9) are installed at both ends of the moving assembly (3); The electric push rod (7) is used to drive the upper mold (8) to fit with the lower mold (9); an injection molding pipe (10) is installed on the upper mold (8) to inject the raw material into the cavity formed by the upper mold (8) and the lower mold (9); the first driving component (4) can drive the moving component (3) to drive the lower mold (9) at one end of the moving component (3) to correspond to the shearing component (6) at one end; the second driving component (5) can drive the shearing components (6) at both ends to move closer to the middle thereof, so as to cut off the excess water outlet on the injection-molded helmet shell.

2. The device for injection molding a helmet shell according to claim 1, characterized in that: The workbench (1) is provided with a first slide groove (11), the moving assembly (3) comprises a moving plate (12), a sliding block (13) is installed at the lower end of the moving plate (12), and the sliding block (13) is slidably installed in the first slide groove (11).

3. The helmet shell injection molding device according to claim 2, characterized in that: First springs (14) are installed at four corners of the lower surface of the lower mold (9), and the lower end of the first spring (14) is installed on the upper surface of the movable plate (12).

4. The device for injection molding a helmet shell according to claim 3, characterized in that: A driving rack (15) is installed on the lower surface of the sliding block (13); the first driving component (4) includes a first motor (16); the first motor (16) is installed inside the workbench (1); a driving shaft (17) is installed on the axis of the first motor (16); a gear (18) is installed on the moving axis of the driving shaft (17); and the gear (18) is meshed with the driving rack (15).

5. The device for injection molding a helmet shell according to claim 4, characterized in that: The workbench (1) is symmetrically provided with second slide grooves (19) on both sides of both ends. The shearing assembly (6) comprises an L-shaped sliding rod (20). The lower end of the L-shaped sliding rod (20) is slidably installed in the second slide groove (19). The upper end of the L-shaped sliding rod (20) is slidably installed with a plurality of positioning rods (21). One end of the positioning rod (21) is installed with a shearing plate (22). The positioning rod (21) is surrounded by a second spring (23). The lower end of the shearing plate (22) is installed with a shearing blade (24).

6. The device for injection molding a helmet shell according to claim 5, characterized in that: The second driving assembly (5) comprises a second motor (25), and the second motor (25) is installed on one side of the workbench (1). A rotating rod (26) is installed on the axis of the second motor (25). One end of the rotating rod (26) passes through the workbench (1) and extends into the interior, and is rotatably installed on the inner wall of the other side of the workbench (1). Both ends of the rotating rod (26) are provided with a threaded section (27), and the threaded directions of the threaded sections (27) at the two ends are different. The lower ends of the L-shaped sliding rods (20) respectively pass through and are threadedly installed on the threaded sections (27), and the L-shaped sliding rods (20) at the two ends can move close to the middle of the rotating rod (26).

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