Injection prepressing forming mold for rubber track

Abstract

The utility model relates to the technical field of track manufacturing molds, in particular to an injection pre-pressing forming mold for a rubber track, which comprises a lower mold main body, a mold lower cavity mounted on the lower mold main body through a mounting structure, a runner plate arranged above the mold lower cavity, a cover plate mounted on the runner plate, an injection port arranged on the cover plate, and an injection port arranged on the injection port. The installation structure comprises two pressing blocks, the two ends of the lower die body are each connected with one pressing block in a sliding mode, two symmetrical inclined grooves are formed in each pressing block, rolling shafts are connected into the inclined grooves in a sliding mode, clamping blocks are fixedly connected to the rolling shafts, clamping grooves are formed in the lower die cavity, and first springs are fixedly connected between the pressing blocks and the lower die body. Automatic operation can be achieved, the efficiency is improved, meanwhile, unstable product quality caused by human factors is avoided, the appearance defect of a crawler belt is reduced or avoided, meanwhile, the lower mold cavity is rapidly installed on the lower mold body through the installation structure, and the assembling efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a pre-pressing molding die, in particular to an injection pre-pressing molding die for a rubber crawler, and belongs to the technical field of crawler manufacturing dies. Background Art

[0002] As a chassis component of agricultural machinery, rubber tracks have the characteristics of soil protection, strong grip and passability, and low noise compared to wheeled chassis. They are widely used in various large agricultural harvesters and tractors.

[0003] The existing crawler manufacturing method adopts direct mold filling and fabric vulcanization or press pre-vulcanization and molding followed by mold filling and vulcanization. The rubber is shaped in the vulcanization mold, and the quality requirements of the coating inside the mold are relatively high. The shrinkage after press pre-vulcanization is large, and the pitch changes. After filling the mold, the preform block and the mold cavity cannot be completely aligned. There will also be the problem of secondary shaping during vulcanization. In the actual production process, it is very easy to produce appearance defects and insufficient internal density and low efficiency. Human factors have a great impact on quality, and there are major product quality risks. Utility Model Content

[0004] The purpose of the present utility model is to provide an injection pre-pressing molding mold for rubber tracks in order to solve the above problems, which can realize automated operation, improve efficiency while avoiding unstable product quality caused by human factors, reduce or avoid appearance defects of the tracks, and at the same time, quickly install the mold lower cavity on the lower mold body through the installation structure, thereby improving assembly efficiency.

[0005] The utility model achieves the above-mentioned purpose through the following technical scheme: an injection pre-pressing molding mold for rubber tracks, comprising a lower mold body, a mold lower cavity is installed on the lower mold body through a mounting structure, a runner plate is provided above the mold lower cavity, a cover plate is installed on the runner plate, an injection port is provided on the cover plate, the mounting structure comprises two pressing blocks, a pressing block is slidably connected to each of the two ends of the lower mold body, two symmetrical inclined grooves are provided on the pressing block, a roller is slidably connected to the inside of the inclined groove, a clamping block is fixedly connected to the roller, a clamping slot is provided on the mold lower cavity, and a first spring is fixedly connected between the pressing block and the lower mold body.

[0006] Preferably, a guide shaft passes through the interior of the first spring, one end of the guide shaft is fixedly connected to the lower mold body, and the other end of the guide shaft is slidably connected to the interior of the pressing block.

[0007] Preferably, the flow channel plate is provided with a plurality of notches, and the cross-section of the notches is a U-shaped structure.

[0008] Preferably, a sealing structure is provided on the flow channel plate, and the sealing structure includes a sealing frame. The bottom end of the flow channel plate is fixedly connected to the sealing frame. The lower mold body and the lower mold cavity of the mold are both provided with sealing grooves, and the sealing frame is used in conjunction with the sealing groove.

[0009] Preferably, a buffer structure is provided on the flow channel plate, and the buffer structure includes positioning columns. Four positioning columns are fixedly connected to the flow channel plate, and four positioning holes are provided on the lower mold body. The positioning columns are used in conjunction with the positioning holes.

[0010] Preferably, a slider is slidably connected to the interior of the positioning hole, and a third spring is fixedly connected between the slider and the lower mold body.

[0011] Preferably, a demolding structure is provided on the lower cavity of the mold, and the demolding structure includes a pressure rod, and the pressure rod is slidably connected to the lower cavity of the mold, and the bottom end of the pressure rod is fixedly connected to a connecting frame, and the connecting frame is slidably connected to the lower cavity of the mold, and a plurality of top blocks are fixedly connected to the connecting frame, and the top blocks are slidably connected to the lower cavity of the mold.

[0012] Preferably, a sealing sleeve is fixedly connected to the lower cavity of the mold, and the pressure rod is slidably connected to the sealing sleeve.

[0013] Preferably, an anti-slip block is fixedly connected to the pressure rod, the anti-slip block is slidably connected to the lower cavity of the mold, and a second spring is fixedly connected between the anti-slip block and the lower cavity of the mold.

[0014] Preferably, the cross-section of the connecting frame is a T-shaped structure, and the cross-section of the top block is a T-shaped structure.

[0015] The beneficial effects of the present invention are as follows: a lower mold cavity is installed on the lower mold body through the mounting structure, a runner plate is provided above the lower mold cavity, a cover plate is installed on the runner plate, an injection port is provided on the cover plate, the mounting structure includes two pressing blocks, a pressing block is slidably connected to each of the two ends of the lower mold body, two symmetrical inclined grooves are provided on the pressing blocks, a roller is slidably connected to the inside of the inclined groove, a clamping block is fixedly connected to the roller, a clamping groove is provided on the lower mold cavity, and a first spring is fixedly connected between the pressing block and the lower mold body; it can realize automated operation, improve efficiency, avoid unstable product quality caused by human factors, reduce or avoid track appearance defects, and at the same time, the lower mold cavity is quickly installed on the lower mold body through the mounting structure, thereby improving assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 for Figure 1The enlarged structural diagram of part A is shown;

[0018] Figure 3 This is a schematic diagram of the connection structure between the lower mold body and the sealing groove of the utility model;

[0019] Figure 4 for Figure 3 The enlarged structural diagram of part B is shown;

[0020] Figure 5 This is a schematic diagram of the connection structure between the flow channel plate and the notch of the utility model;

[0021] Figure 6 for Figure 5 The enlarged structural diagram of part C is shown;

[0022] Figure 7 This is a schematic diagram of the connection structure between the lower mold body and the buffer structure of the present invention;

[0023] Figure 8 This is a schematic diagram of the connection structure between the lower cavity and the top block of the mold of the present invention.

[0024] In the figure: 1. Lower mold body; 2. Lower mold cavity; 3. Runner plate; 4. Cover plate; 5. Mounting structure; 501. Pressing block; 502. Inclined groove; 503. Roller; 504. Clamping block; 505. Clamping groove; 506. Guide shaft; 507. First spring; 6. Sealing structure; 601. Sealing groove; 602. Sealing frame; 7. Demolding structure; 701. Press rod; 702. Connecting frame; 703. Ejecting block; 704. Sealing sleeve; 705. Anti-slip block; 706. Second spring; 8. Buffer structure; 801. Positioning column; 802. Positioning hole; 803. Slider; 804. Third spring; 9. Notch; 10. Injection port. DETAILED DESCRIPTION

[0025] 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.

[0026] See also Figure 1-8As shown, an injection pre-pressing molding mold for a rubber track includes a lower mold body 1, a mold lower cavity 2 is installed on the lower mold body 1 through a mounting structure 5, a runner plate 3 is provided above the mold lower cavity 2, a cover plate 4 is installed on the runner plate 3, and an injection port 10 is provided on the cover plate 4, the mounting structure 5 includes two pressing blocks 501, a pressing block 501 is slidably connected to each end of the lower mold body 1, two symmetrical inclined grooves 502 are provided on the pressing block 501, a roller 503 is slidably connected inside the inclined groove 502, a clamping block 504 is fixedly connected to the roller 503, a clamping groove 505 is provided on the mold lower cavity 2, a first spring 507 is fixedly connected between the pressing block 501 and the lower mold body 1; a guide shaft 506 is passed through the interior of the first spring 507, one end of the guide shaft 506 is fixedly connected to the lower mold body 1, and the other end of the guide shaft 506 is slidably connected to the interior of the pressing block 501.

[0027] As a technical optimization solution of the present invention, the flow channel plate 3 is provided with multiple groups of notches 9, and the cross section of the notches 9 is a U-shaped structure; the flow channel plate 3 is fixed to the lifting assembly of the injection molding machine through the notches 9.

[0028] As a technical optimization solution of the present invention, a sealing structure 6 is provided on the runner plate 3, and the sealing structure 6 includes a sealing frame 602. The bottom end of the runner plate 3 is fixedly connected with the sealing frame 602. The lower mold body 1 and the lower mold cavity 2 are both provided with a sealing groove 601. The sealing frame 602 is used in conjunction with the sealing groove 601 to improve the sealing performance of the cover plate 4 and the lower mold cavity 2 when they are covered by the sealing structure 6.

[0029] As a technical optimization solution of the present invention, a buffer structure 8 is provided on the flow channel plate 3, and the buffer structure 8 includes a positioning column 801. Four positioning columns 801 are fixedly connected to the flow channel plate 3, and four positioning holes 802 are provided on the lower mold body 1. The positioning columns 801 are used in conjunction with the positioning holes 802; a slider 803 is slidably connected inside the positioning hole 802, and a third spring 804 is fixedly connected between the slider 803 and the lower mold body 1, so that the stability of the mold during mold closing is improved by the buffer structure 8.

[0030] As a technical optimization solution of the present invention, a demolding structure 7 is provided on the lower cavity 2 of the mold, and the demolding structure 7 includes a pressure rod 701, and a pressure rod 701 is slidably connected to the lower cavity 2 of the mold, and the bottom end of the pressure rod 701 is fixedly connected to a connecting frame 702, and the connecting frame 702 is slidably connected to the lower cavity 2 of the mold, and a plurality of top blocks 703 are fixedly connected to the connecting frame 702, and the top blocks 703 are slidably connected to the lower cavity 2 of the mold; a sealing sleeve 704 is fixedly connected to the lower cavity 2 of the mold, and the pressure rod 701 is slidably connected to the sealing sleeve 704; an anti-stripping block 705 is fixedly connected to the pressure rod 701, and the anti-stripping block 705 is slidably connected to the lower cavity 2 of the mold, and a second spring 706 is fixedly connected between the anti-stripping block 705 and the lower cavity 2 of the mold; the cross-section of the connecting frame 702 is a T-shaped structure, and the cross-section of the top block 703 is a T-shaped structure. The molding block is removed by the demolding structure 7, thereby improving the demolding efficiency of the molding block.

[0031] When the present invention is in use, when it is necessary to manufacture a rubber track, the lower mold body 1 can be first fixed in the T-slot on the injection molding machine, and then the cover plate 4 can be spliced ​​on the runner plate 3, and then the runner plate 3 can be fixedly connected to the lifting assembly of the injection molding machine through the bolts matching the notch 9, and then the pressing block 501 is pressed, and the pressing block 501 compresses the first spring 507. At the same time, the pressing block 501 is provided with an inclined groove 502, and the sliding of the pressing block 501 will drive the roller 503 to move, and the roller 503 drives the clamping block 504 to slide, and the clamping block 504 retreats into the lower mold body. The interior of the body 1, and then the two mold lower cavities 2 are inserted into the lower mold body 1, and then the pressing block 501 is released, the first spring 507 is reset, and then the pressing block 501 is reset, and then the roller 503 and the clamping block 504 are reset. The clamping block 504 is engaged with the clamping groove 505 on the lower mold body 1, thereby fixing the mold lower cavity 2. The setting of the guide shaft 506 improves the sliding stability of the pressing block 501 and prevents the first spring 507 from running off. When the mold is closed, the lifting assembly drives the runner plate 3 to descend, and the positioning column 801 on the runner plate 3 is engaged with the lower mold body 1. When the positioning hole 802 on the mold body 1 is plugged in and continues to descend, the flow channel plate 3 will conflict with the pressure rod 701, thereby driving the anti-slip block 705 and the connecting frame 702 to slide downward, and the second spring 706 is compressed. At the same time, when the flow channel plate 3 is completely fitted with the lower cavity 2 of the mold, the top block 703 is fitted with the lower cavity 2 of the mold, and the sealing frame 602 is plugged in and fitted with the sealing groove 601, which improves the sealing of the device. When the positioning column 801 descends, it will conflict with the slider 803, causing the third spring 804 to be compressed. The third spring 804 plays a buffering role, improving the up and down The effect of mold closing is that after the mold closing is completed, the rubber is plasticized by the injection machine, and then the plasticized rubber is injected through the injection port 10. The plastic flows into the internal shape of the lower cavity 2 of the mold after passing through the through hole on the runner plate 3. After maintaining the pressure, a high-density pre-formed block is formed. When the mold is opened, the lifting component adjusts the runner plate 3 to rise, and the runner plate 3 no longer conflicts with the pressure rod 701. The second spring 706 resets to drive the anti-slip block 705 and the pressure rod 701 to reset, and then drives the connecting frame 702 and the top block 703 to rise. The top block 703 ejects multiple molding blocks, thereby improving the demolding efficiency.

[0032] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0033] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. An injection pre-pressing mold for a rubber crawler, comprising a lower mold body (1), characterized in that: The lower mold body (1) is provided with a mold lower cavity (2) via a mounting structure (5), a flow channel plate (3) is provided above the mold lower cavity (2), a cover plate (4) is installed on the flow channel plate (3), an injection port (10) is provided on the cover plate (4), the mounting structure (5) comprises two pressing blocks (501), a pressing block (501) is slidably connected to each of the two ends of the lower mold body (1), two symmetrical inclined grooves (502) are provided on the pressing block (501), a roller (503) is slidably connected inside the inclined groove (502), a clamping block (504) is fixedly connected to the roller (503), a clamping groove (505) is provided on the mold lower cavity (2), and a first spring (507) is fixedly connected between the pressing block (501) and the lower mold body (1).

2. The injection pre-pressing mold for a rubber crawler according to claim 1, characterized in that: A guide shaft (506) passes through the interior of the first spring (507), one end of the guide shaft (506) is fixedly connected to the lower mold body (1), and the other end of the guide shaft (506) is slidably connected to the interior of the pressing block (501).

3. The injection pre-pressing mold for a rubber crawler according to claim 1, characterized in that: The flow channel plate (3) is provided with a plurality of groups of notches (9), and the cross-section of the notches (9) is a U-shaped structure.

4. The injection pre-pressing mold for a rubber crawler according to claim 1, characterized in that: The flow channel plate (3) is provided with a sealing structure (6), the sealing structure (6) includes a sealing frame (602), the bottom end of the flow channel plate (3) is fixedly connected to the sealing frame (602), the lower mold body (1) and the mold lower cavity (2) are both provided with a sealing groove (601), and the sealing frame (602) and the sealing groove (601) are used in conjunction with each other.

5. The injection pre-pressing mold for a rubber crawler according to claim 1, characterized in that: The flow channel plate (3) is provided with a buffer structure (8), the buffer structure (8) includes positioning columns (801), four positioning columns (801) are fixedly connected to the flow channel plate (3), and four positioning holes (802) are provided on the lower mold body (1), and the positioning columns (801) are used in conjunction with the positioning holes (802).

6. The injection pre-pressing mold for a rubber crawler according to claim 5, characterized in that: A slider (803) is slidably connected inside the positioning hole (802), and a third spring (804) is fixedly connected between the slider (803) and the lower mold body (1).

7. The injection pre-pressing mold for a rubber crawler according to claim 1, characterized in that: The lower mold cavity (2) of the mold is provided with a demoulding structure (7), and the demoulding structure (7) includes a pressure rod (701), the lower mold cavity (2) is slidably connected to the pressure rod (701), the bottom end of the pressure rod (701) is fixedly connected to a connecting frame (702), the connecting frame (702) is slidably connected to the lower mold cavity (2), and a plurality of top blocks (703) are fixedly connected to the connecting frame (702), and the top blocks (703) are slidably connected to the lower mold cavity (2).

8. The injection pre-pressing mold for a rubber crawler according to claim 7, characterized in that: A sealing sleeve (704) is fixedly connected to the lower mold cavity (2) of the mold, and the pressure rod (701) is slidably connected to the sealing sleeve (704).

9. The injection pre-pressing mold for a rubber crawler according to claim 7, characterized in that: An anti-slip block (705) is fixedly connected to the pressure rod (701), the anti-slip block (705) is slidably connected to the lower mold cavity (2), and a second spring (706) is fixedly connected between the anti-slip block (705) and the lower mold cavity (2).

10. The injection pre-pressing mold for a rubber track according to claim 7, characterized in that: The cross section of the connecting frame (702) is a T-shaped structure, and the cross section of the top block (703) is a T-shaped structure.

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