Flat plastic part injection mold

Abstract

The utility model relates to the technical field of injection molds, in particular to a flat plastic part injection mold which comprises a lower mold base, the lower end of the lower mold base is fixedly connected with two vertical plates distributed left and right, a reverse thread lead screw is rotatably connected between the two vertical plates, and the outer wall of the reverse thread lead screw is in threaded connection with two symmetrically distributed driving blocks. The lower ends of the two driving blocks are fixedly connected with L-shaped supports, motors are installed on the opposite faces of the two supports, the output ends of the motors penetrate through the supports and are fixedly connected with gears, the outer walls of the gears are connected with two racks distributed front and back in a meshed mode, and the two motors are started to drive the gears to rotate. When the gear rotates, the two racks meshed with the gear are driven to move reversely, so that the upper end and the lower end of the lower die base and the upper end of the upper die base can be clamped, the die locking force between the lower die base and the upper die base is increased, and the purposes of reducing the working pressure of the hydraulic cylinder and prolonging the service life through cooperation of a plurality of locking plates are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to a flat plastic part injection mold. Background Art

[0002] A mold is a tool that can be used to produce the desired product through methods such as injection molding, blow molding, extrusion, and die casting. The injection mold is the one that can be used to produce the desired product through injection molding. The injection mold can inject hot-melt plastic into the mold, and then cool it to produce a variety of plastic parts.

[0003] An existing flat plastic part injection mold generally uses the clamping force generated by a hydraulic cylinder to fix the injection molding machine mold up and down to achieve the opening and closing of the mold. However, the hydraulic cylinder is subjected to injection pressure for a long time, which may cause increased wear and reduce the service life. Therefore, it is necessary to propose a flat plastic part injection mold to solve the above-mentioned problems. Utility Model Content

[0004] The utility model aims to provide a flat plastic part injection mold, which has the characteristics of being able to reduce the working pressure of a hydraulic cylinder and prolong the service life through the cooperation of a plurality of locking plates.

[0005] The utility model aims to provide a flat plastic part injection mold, comprising a lower mold base, the lower end of the lower mold base is fixedly connected to two vertical plates distributed left and right, a reverse threaded screw is rotatably connected between the two vertical plates, the outer wall of the reverse threaded screw is threadedly connected to two symmetrically distributed driving blocks, the lower ends of the two driving blocks are fixedly connected to "L"-shaped brackets, the opposite sides of the two brackets are equipped with motors, the output end of the motor passes through the bracket and is fixedly connected to a gear, the outer wall of the gear is meshedly connected to two racks distributed front and back, and the opposite sides of the two racks are fixedly connected to locking plates.

[0006] In order to facilitate the driving of the reverse threaded screw to rotate, as a preferred flat plastic part injection mold of the utility model, a second motor is installed at the left end of the vertical plate at the left end, and the output end of the second motor passes through the vertical plate and is fixedly connected to the reverse threaded screw.

[0007] In order to facilitate the positioning of the racks, as a preferred embodiment of the flat plastic part injection mold of the utility model, the opposite sides of the two racks are slidably connected to the bracket via a slide rail.

[0008] In order to facilitate the movement of the upper mold base, as a preferred flat plastic part injection mold of the utility model, the outer wall of the lower mold base is fixedly connected to a support block, the upper end of the support block is fixedly connected to a support plate through a connecting rod, and an electric push rod is installed on the upper end of the support plate, and the output end of the electric push rod passes through the support plate and is fixedly connected to the upper mold base.

[0009] In order to prevent the driving block from axially rotating, as a preferred embodiment of the flat plastic part injection mold of the utility model, the upper ends of the two driving blocks are in contact with the bottom end of the lower mold base.

[0010] In order to facilitate the support of the lower mold base, as a preferred flat plastic part injection mold of the utility model, the lower end of the lower mold base is fixedly connected to two symmetrically distributed support columns.

[0011] In order to facilitate the limiting of the racks, as a preferred embodiment of the flat plastic part injection mold of the utility model, the two racks have their opposite sides fixedly connected to limiting blocks.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] The utility model drives two driving blocks to move in opposite directions by rotating a reverse threaded screw rod, and when the two driving blocks move in opposite directions, they drive the brackets connected thereto to move, and the locking plates are moved to the upper and lower ends of the lower die base and the upper die base through the relative movement of the two brackets, and then the two motors are started to drive the gears to rotate, and when the gears rotate, they drive the two racks meshing therewith to move in opposite directions, so that the upper and lower ends of the lower die base and the upper die base can be clamped by the locking plates, thereby increasing the clamping force between the lower die base and the upper die base, and achieving the purpose of reducing the working pressure of the hydraulic cylinder and extending the service life by cooperating with multiple locking plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is the overall structure diagram of the utility model;

[0015] Figure 2 It is a partial structural diagram of the utility model;

[0016] Figure 3 This is a structural diagram of the locking plate of the utility model.

[0017] In the figure: 1. lower die base; 2. vertical plate; 3. reverse threaded screw; 4. drive block; 5. second motor; 6. support column; 7. gear; 8. motor; 9. rack; 10. locking plate; 11. limit block; 12. support block; 13. bracket; 14. electric push rod; 15. support plate; 16. connecting rod; 17. upper die base. DETAILED DESCRIPTION

[0018] See also Figures 1 to 3A flat plastic part injection mold comprises a lower mold base 1, the lower end of the lower mold base 1 is fixedly connected to two vertical plates 2 distributed left and right, a reverse threaded screw 3 is rotatably connected between the two vertical plates 2, the outer wall of the reverse threaded screw 3 is threadedly connected to two symmetrically distributed driving blocks 4, the lower ends of the two driving blocks 4 are fixedly connected to "L"-shaped brackets 13, the opposite sides of the two brackets 13 are installed with motors 8, the output end of the motor 8 passes through the bracket 13 and is fixedly connected to a gear 7, the outer wall of the gear 7 is meshedly connected to two racks 9 distributed front and back, and the opposite sides of the two racks 9 are fixedly connected to locking plates 10.

[0019] In this embodiment: the two driving blocks 4 can be driven to move in the opposite direction by rotating the reverse threaded screw 3. When the two driving blocks 4 move in the opposite direction, they drive the bracket 13 connected thereto to move. The locking plate 10 can be moved to the upper and lower ends of the lower die base 1 and the upper die base 17 through the relative movement of the two brackets 13. Then the two motors 8 are started to drive the gear 7 to rotate. When the gear 7 rotates, it drives the two racks 9 meshing therewith to move in the opposite direction, so that the upper and lower ends of the lower die base 1 and the upper die base 17 can be clamped, thereby increasing the clamping force between the lower die base 1 and the upper die base 17.

[0020] As a technical optimization solution of the utility model, a second motor 5 is installed at the left end of the left vertical plate 2 , and the output end of the second motor 5 passes through the vertical plate 2 and is fixedly connected to the reverse threaded screw 3 .

[0021] In this embodiment: the reverse threaded screw rod 3 can be driven to rotate by the second motor 5 .

[0022] As a technical optimization solution of the present invention, opposite sides of the two racks 9 are slidably connected to the bracket 13 via a slide rail.

[0023] In this embodiment, the two racks 9 are conveniently limited in position because the opposite sides of the two racks 9 are slidably connected to the bracket 13 via a slide rail.

[0024] As a technical optimization solution of the utility model, the outer wall of the lower mold base 1 is fixedly connected to a support block 12, the upper end of the support block 12 is fixedly connected to a support plate 15 through a connecting rod 16, and an electric push rod 14 is installed on the upper end of the support plate 15. The output end of the electric push rod 14 passes through the support plate 15 and is fixedly connected to the upper mold base 17.

[0025] In this embodiment, the upper die base 17 can be driven to move by the electric push rod 14 to make the upper die base 17 abut against the lower die base 1 .

[0026] As a technical optimization solution of the present invention, the upper ends of the two driving blocks 4 are both in contact with the bottom end of the lower die base 1 .

[0027] In this embodiment, the upper ends of the two driving blocks 4 are in contact with the bottom end of the lower die base 1 , so as to prevent the two driving blocks 4 from axially rotating.

[0028] As a technical optimization solution of the utility model, two symmetrically distributed support columns 6 are fixedly connected to the lower end of the lower die base 1 .

[0029] In this embodiment: the lower die base 1 can be conveniently supported by the support column 6 , thereby increasing the stability of the lower die base 1 .

[0030] As a technical optimization solution of the present utility model, the two racks 9 have opposite sides fixedly connected to the limiting blocks 11 .

[0031] In this embodiment: the two racks 9 are fixedly connected to the limiting blocks 11 on the opposite sides thereof, and the limiting blocks 11 can be used to conveniently limit the two racks 9 .

[0032] Working principle: When in use, the upper die base 17 can be driven to move by the electric push rod 14, so that the upper die base 17 abuts against the lower die base 1;

[0033] Then, the reverse threaded screw 3 is driven to rotate by the second motor 5, and the reverse threaded screw 3 can drive the two driving blocks 4 to move in the opposite direction. When the two driving blocks 4 move in the opposite direction, the bracket 13 connected thereto is driven to move. The locking plate 10 can be moved to the upper and lower ends of the lower die base 1 and the upper die base 17 by the relative movement of the two brackets 13.

[0034] Then, the two motors 8 are started to drive the gear 7 to rotate. When the gear 7 rotates, it drives the two racks 9 meshing with it to move in the opposite direction, so that the upper and lower ends of the lower mold base 1 and the upper mold base 17 can be clamped, thereby increasing the clamping force between the lower mold base 1 and the upper mold base 17.

[0035] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A flat plastic part injection mold, comprising a lower mold base (1), characterized in that: The lower end of the lower die base (1) is fixedly connected to two vertical plates (2) distributed on the left and right, and a reverse threaded screw (3) is rotatably connected between the two vertical plates (2). The outer wall of the reverse threaded screw (3) is threadedly connected to two symmetrically distributed driving blocks (4). The lower ends of the two driving blocks (4) are fixedly connected to an "L"-shaped bracket (13). The opposite sides of the two brackets (13) are both equipped with a motor (8). The output end of the motor (8) passes through the bracket (13) and is fixedly connected to a gear (7). The outer wall of the gear (7) is meshedly connected to two racks (9) distributed in front and back, and the opposite sides of the two racks (9) are both fixedly connected to a locking plate (10).

2. The flat plastic part injection mold according to claim 1, characterized in that: A second motor (5) is installed at the left end of the vertical plate (2) at the left end, and an output end of the second motor (5) passes through the vertical plate (2) and is fixedly connected to the reverse threaded screw (3).

3. The flat plastic part injection mold according to claim 1, characterized in that: The opposite sides of the two racks (9) are slidably connected to the bracket (13) via a slide rail.

4. The flat plastic part injection mold according to claim 1, characterized in that: The outer wall of the lower die base (1) is fixedly connected to a support block (12); the upper end of the support block (12) is fixedly connected to a support plate (15) via a connecting rod (16); an electric push rod (14) is installed at the upper end of the support plate (15); the output end of the electric push rod (14) passes through the support plate (15) and is fixedly connected to an upper die base (17).

5. The flat plastic part injection mold according to claim 1, characterized in that: The upper ends of the two driving blocks (4) are in contact with the bottom end of the lower die base (1).

6. The flat plastic part injection mold according to claim 1, characterized in that: The lower end of the lower die base (1) is fixedly connected to two symmetrically distributed support columns (6).

7. The flat plastic part injection mold according to claim 1, characterized in that: The opposite sides of the two racks (9) are fixedly connected to the limiting blocks (11).

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