Injection mold frame with easy adjustment

Abstract

This utility model discloses an easily adjustable injection mold frame, including a base, an upper mold disposed at the upper center of the base, columns fixedly connected to the four ends of the upper part of the base, a top plate fixedly connected to the top of the columns, and a second motor fixedly connected to the inner center of the base. A screw is fixedly connected to the output end of the second motor. This patent enables two sets of movable frames to move relative to each other by setting a bidirectional screw and a connecting rod assembly inside the base and the top plate, positioning and clamping both ends of the upper and lower molds. Simultaneously, the bidirectional screw installed inside the two sets of movable frames enables relative movement of the clamping plates, completing the four-end positioning and clamping of the upper and lower molds, achieving rapid positioning and locking of the upper and lower molds, ensuring mold closing accuracy, avoiding skewing caused by unilateral force, and featuring a modular design compatible with molds of different sizes, reducing changeover time.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, and in particular to an easily adjustable injection mold frame. Background Technology

[0002] Injection molds are precision tools used for injection molding, primarily for the mass production of plastic products. Their core principle involves injecting molten plastic raw materials (such as ABS, PP, PC, etc.) into the mold cavity under high pressure. After cooling and solidification, the mold is opened and the molded part is ejected, resulting in a plastic part that conforms to the shape of the mold.

[0003] Molds typically consist of an upper mold (fixed mold) and a lower mold (moving mold), and are widely used in industries such as home appliances, automobiles, electronics, and medical devices. They are characterized by high efficiency, high precision, and repeatable production, making them core equipment for the industrial production of plastic products. The mold material (such as P20 steel or 718H steel) and design directly affect product yield and cost.

[0004] Existing injection molds have significant drawbacks in mold base adjustment: traditional clamping methods often use bolt fastening or single-sided locking structures, resulting in low positioning accuracy of the upper and lower molds. When the mold is closed, uneven force can easily cause skewing, affecting the consistency of product dimensions. Insufficient modularity makes mold replacement time-consuming, requiring repeated adjustments to alignment and reducing production efficiency. In addition, traditional designs have weak compatibility with multiple mold specifications, requiring additional customized adapter parts, which increases costs. Utility Model Content

[0005] The purpose of this invention is to provide an easily adjustable injection mold base, solving the problem that existing injection mold bases are difficult to adjust according to different mold sizes.

[0006] To achieve the above objectives, an easily adjustable injection mold frame is provided, comprising a base, characterized in that an upper mold is provided at the upper center of the base, columns are fixedly connected to the four ends of the upper part of the base, a top plate is fixedly connected to the top of the columns, a second motor is fixedly connected to the inner center of the base, a screw is fixedly connected to the output end of the second motor, a threaded block is threadedly connected to the screw, and connecting rods are rotatably connected to both ends of the threaded block.

[0007] A sliding groove is provided on the top of the base, and a sliding rod is fixedly connected inside the sliding groove. A slider is slidably connected on the sliding rod, and the other end of the connecting rod is rotatably connected to the bottom of the slider.

[0008] According to the aforementioned easily adjustable injection mold frame, a cylinder is fixedly connected to the upper center of the top plate, and the extended end of the cylinder is fixedly connected to a movable plate downward through the top plate.

[0009] According to the aforementioned easily adjustable injection mold frame, the movable plate is slidably connected to the column, and a lower mold is provided at the lower center of the movable plate.

[0010] According to the aforementioned easily adjustable injection mold frame, a motor is fixedly connected to one end of the outer side of the movable plate, and a slot is provided inside the movable plate.

[0011] According to the aforementioned easily adjustable injection mold frame, the output end of the motor is fixedly connected to a bidirectional screw rod through the slot, and a threaded block is threaded onto the bidirectional screw rod. The lower end of the threaded block and the upper end of the slider are both fixedly connected to a movable frame.

[0012] According to the aforementioned easily adjustable injection mold frame, a motor is fixedly connected to one end of the outer side of the movable frame, and a slot is provided inside the movable frame.

[0013] According to the aforementioned easily adjustable injection mold frame, the output end of the motor three is fixedly connected to a bidirectional screw two through the slot two, and two threaded blocks two are threadedly connected to the bidirectional screw two, with a clamping plate fixedly connected to the inner end of the threaded blocks two.

[0014] The above-mentioned solution has the following beneficial effects:

[0015] This patented technology enables two sets of movable frames to move relative to each other by incorporating bidirectional screws and connecting rod assemblies inside the base and top plate. This allows for positioning and clamping of both ends of the upper and lower molds. Simultaneously, bidirectional screws installed inside the two sets of movable frames enable relative movement of the clamping plates, achieving four-end positioning and clamping of the upper and lower molds. This facilitates rapid positioning and locking of the upper and lower molds, ensuring mold closing accuracy and preventing skewing caused by unilateral force. The modular design is compatible with molds of different sizes, reducing changeover time and simplifying the operation process. It also reduces the difficulty of manual adjustment and is suitable for multi-variety, small-batch production scenarios, balancing efficiency and precision.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

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

[0018] Figure 1 This is a front view of an easily adjustable injection mold frame according to the present invention;

[0019] Figure 2 This is a bottom view of an easily adjustable injection mold frame according to the present invention;

[0020] Figure 3This is a schematic diagram of the interior of the base of an easily adjustable injection mold frame according to this utility model;

[0021] Figure 4 This is a schematic diagram of the clamping plate structure of an easily adjustable injection mold frame according to the present invention.

[0022] Legend:

[0023] 1. Top plate; 2. Movable plate; 3. Column; 4. Base; 5. Lower mold; 6. Movable frame; 7. Upper mold; 8. Cylinder; 9. Double-acting screw one; 10. Slot one; 11. Motor one; 12. Threaded block one; 13. Slide rod; 14. Slide groove; 15. Slider; 16. Connecting rod; 17. Motor two; 18. Screw; 19. Motor three; 20. Threaded block two; 21. Double-acting screw two; 22. Slot two; 23. Clamping plate. Detailed Implementation

[0024] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0025] Reference Figure 1-4 This utility model provides an easily adjustable injection mold frame, including a base 4, an upper mold 5 disposed at the upper center of the base 4, columns 3 fixedly connected to the four ends of the upper part of the base 4, a top plate 1 fixedly connected to the top of the columns 3, a second motor 17 fixedly connected to the inner center of the base 4, a screw 18 fixedly connected to the output end of the second motor 17, a second threaded block 20 threadedly connected to the screw 18, and connecting rods 16 rotatably connected to both ends of the second threaded block 20. Starting the second motor 17 can drive the screw 18 to rotate.

[0026] A groove 14 is provided above the base 4. A slide rod 13 is fixedly connected inside the groove 14. A slider 15 is slidably connected to the slide rod 13. The other end of the connecting rod 16 is rotatably connected to the bottom of the slider 15. Under the action of the threaded connection, the threaded block 20 can move downward. Under the transmission action of the connecting rod 16, the slider 15 can drive the two movable frames 6 above to move relative to each other, and position and clamp the two ends of the lower mold 5. By setting the slide rod 13 and the groove 14, the slider 15 can be restricted to ensure that the slider 15 can drive the movable frames 6 to slide stably.

[0027] A cylinder 8 is fixedly connected to the upper center of the top plate 1. The extended end of the cylinder 8 passes through the top plate 1 and is fixedly connected to the movable plate 2 downwards. By starting the cylinder 8, the movable plate 2 and the upper mold 7 can be driven to move downwards, and the mold can be closed with the upper mold 5. The upper mold 7 can be injection molded through the injection hole of the upper mold 7. The movable plate 2 is slidably connected to the column 3. The lower mold 7 is set in the lower center of the movable plate 2. The stability of the upper mold 7 during lifting and sliding can be improved by setting the column 3.

[0028] A motor 11 is fixedly connected to one outer end of the movable plate 2. A slot 10 is formed inside the movable plate 2. A bidirectional screw 9 is fixedly connected to the output end of the motor 11 through the slot 10. A threaded block 12 is threaded onto the bidirectional screw 9. Movable frames 6 are fixedly connected to the lower end of the threaded block 12 and the upper end of the slider 15. A motor 3 19 is fixedly connected to one outer end of the movable frame 6. A slot 22 is formed inside the movable frame 6. A bidirectional screw 21 is fixedly connected to the output end of the motor 3 19 through the slot 22. Two threaded blocks 20 are threaded onto the bidirectional screw 21. A clamping plate 23 is fixedly connected to the inner end of the threaded blocks 20. The upper mold 7 is placed below the movable plate 2 and manually pressed. The motor 11 is started, driving the bidirectional screw 9 to rotate. Under the action of the threaded connection, the threaded blocks 12 drive the two movable frames 6 to move relative to each other, positioning and clamping the two ends of the upper mold 7. Finally, the motors 3 19 at both ends are started, causing the internal... The bidirectional screw 21 rotates, and under the action of the threaded connection, the two threaded blocks 20 drive the clamping plate 23 to clamp the other two ends of the upper and lower molds, ensuring that the upper mold 7 and the lower mold 7 are centered and aligned. Secondly, in this patent, the upper and lower sets of motors 19 move synchronously. Synchronization commands are sent to the two motors through the industrial bus, and the timing of the actions is ensured by using a high-precision clock protocol (such as IEEE1588), ensuring the centered clamping and alignment of the upper and lower molds. Furthermore, spring-loaded electromagnetic brakes are installed at the rear ends of the three sets of motors. When energized, the electromagnetic coil generates magnetic force, overcomes the spring pressure, releases the brake pad, and the motor shaft can rotate freely. When de-energized, the spring force presses the brake pad and the friction disc, locking the motor shaft through friction and preventing it from rotating, achieving a self-locking effect. This ensures the stability of the entire clamping assembly after clamping, prevents loosening, and improves the practicality of the entire injection molding device to meet the corresponding adjustment operations of molds of different sizes.

[0029] Working principle: During use, the operator places the lower mold 5 on top of the base 4. First, the motor 17 is started to drive the screw 18 to rotate. Under the action of the threaded connection, the threaded block 20 moves downward. Under the transmission action of the connecting rod 16, the slider 15 drives the two movable frames 6 above to move relative to each other, positioning and clamping both ends of the lower mold 5. At the same time, the upper mold 7 is placed below the movable plate 2 and manually pressed. The motor 11 is started to drive the bidirectional screw 9 to rotate. Under the action of the threaded connection, the threaded block 12 drives the two movable frames 6 to move relative to each other, positioning and clamping both ends of the upper mold 7. Finally, the motor 19 at both ends is started to drive the internal bidirectional screw 21 to rotate. Under the action of the threaded connection, the two threaded blocks 20 drive the clamping plate 23 to clamp the other ends of the upper mold 7 and the lower mold 5, ensuring that the upper mold 7 and the lower mold 7 are aligned in the center, improving the overall injection molding efficiency.

[0030] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. An easily adjustable injection mold base, comprising a base (4), characterized in that, The upper mold (5) is provided in the middle of the upper part of the base (4). The four ends of the upper part of the base (4) are fixedly connected to the column (3). The top plate (1) is fixedly connected to the top of the column (3). The inner middle of the base (4) is fixedly connected to the motor (17). The output end of the motor (17) is fixedly connected to the screw (18). The screw (18) is threaded with the threaded block (20). The two ends of the threaded block (20) are rotatably connected to the connecting rod (16). A groove (14) is provided above the base (4). A slide rod (13) is fixedly connected inside the groove (14). A slider (15) is slidably connected on the slide rod (13). The other end of the connecting rod (16) is rotatably connected to the bottom of the slider (15).

2. The easily adjustable injection mold base according to claim 1, characterized in that, A cylinder (8) is fixedly connected to the upper center of the top plate (1), and the extended end of the cylinder (8) is fixedly connected to a movable plate (2) downward through the top plate (1).

3. The easily adjustable injection mold base according to claim 2, characterized in that, The movable plate (2) is slidably connected to the column (3), and a lower mold (7) is provided in the lower center of the movable plate (2).

4. The easily adjustable injection mold base according to claim 2, characterized in that, A motor (11) is fixedly connected to one end of the outer side of the movable plate (2), and a slot (10) is provided inside the movable plate (2).

5. The easily adjustable injection mold base according to claim 4, characterized in that, The output end of the motor (11) is fixedly connected to the slot (10) and a bidirectional screw (9). A threaded block (12) is threaded onto the bidirectional screw (9). A movable frame (6) is fixedly connected to the lower end of the threaded block (12) and the upper end of the slider (15).

6. The easily adjustable injection mold base according to claim 5, characterized in that, A motor (19) is fixedly connected to one end of the outer side of the movable frame (6), and a slot (22) is provided inside the movable frame (6).

7. The easily adjustable injection mold base according to claim 6, characterized in that, The output end of the motor three (19) is fixedly connected to the slot two (22) and the two-way screw two (21) is threadedly connected to the two-way screw two (21). The inner end of the two-way screw two (20) is fixedly connected to the two-way screw two (21). The inner end of the two-way screw two (20) is fixedly connected to the clamping plate (23).

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