TPU microcellular foaming tire forming equipment

Abstract

The invention provides TPU microcellular foaming tire forming equipment, and relates to the technical field of supercritical fluid microcellular foaming, the TPU microcellular foaming tire forming equipment comprises a workbench, a bottom die is rotatably mounted on the top surface of the workbench, the bottom die is horizontally arranged, an upper die is detachably mounted on the bottom die, a die cavity is formed between the bottom die and the upper die, and lower mounting blocks are symmetrically mounted on the periphery of the bottom die. According to the TPU microcellular foaming tire forming equipment, through the arrangement of the workbench, the bottom die, the upper die, the lower mounting block, the upper mounting block, the L-shaped clamping hook, the first ejection rod, the first ejection structure, the second ejection rod and the second ejection structure, it can be ensured that the weight distribution of the whole die is uniform; according to the tire mold, the situation that materials are distributed unevenly due to eccentricity caused by uneven weight distribution during high-speed rotation is reduced, the quality of tires is ensured, demolding of the tires can be completed while mold opening is conducted, manual demolding of workers is not needed, the labor amount of the workers is reduced, the working procedures are reduced, time is saved, and the working efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of supercritical fluid microporous foaming, in particular to a TPU microporous foaming tire molding device. Background Art

[0002] The molding process of TPU (thermoplastic polyurethane elastomer) microcellular foamed tires mainly uses supercritical fluid microcellular foaming technology. During TPU molding, supercritical fluid is injected into the mold, and then the mold is driven by a motor to rotate at high speed, so that the supercritical fluid material evenly fills the mold cavity. It is kept in the mold for a certain period of time to allow the TPU sol to cool and solidify, and the bubble nucleus is also stabilized to form a microporous structure. After cooling and solidification, a balloon is used to align with the holes on the mold, and the air blows the tire out of the mold through the connecting holes in the mold.

[0003] In actual use, the existing TPU microporous foam tire molding molds are mostly connected by hinges, and the other side is locked by a lock to achieve the clamping of the upper and lower molds. However, the weight of the hinge side and the lock side cannot be consistent, and eccentricity will occur during high-speed rotation, which will affect the distribution of the supercritical fluid material. In addition, when demolding the tire, it is necessary to manually use an air gun to aim at the air hole on the mold to blow the tire out of the mold. Due to its fast molding speed, the demolding of each tire requires the use of an air gun for a long time, which will increase the fatigue of the staff, affect work efficiency, and is relatively inconvenient. Summary of the invention

[0004] Based on the technical problems existing in the background technology, the present invention proposes a TPU microcellular foaming tire molding equipment.

[0005] A TPU microcellular foam tire molding device proposed by the present invention comprises a workbench, a bottom mold is rotatably installed on the top surface of the workbench, the bottom mold is arranged horizontally, an upper mold is detachably installed on the bottom mold, a mold cavity is provided between the bottom mold and the upper mold, a lower mounting block is symmetrically installed on the outer periphery of the bottom mold, an upper mounting block is symmetrically installed on the outer periphery of the upper mold, the number of the upper mounting blocks is the same as the number of the lower mounting blocks and is arranged one by one, a switch slide groove is provided on the upper mounting block, an L-shaped hook is slidably installed in the switch slide groove; the transverse section of the L-shaped hook slides through the inner wall of the switch slide groove and extends to the outside of the upper mounting block, and the lower mounting block is provided with a buckle groove engaged with the vertical section of the L-shaped hook; The bottom inner wall of the bottom mold cavity is provided with a No. 1 ejection hole, a No. 1 ejection rod is slidably installed in the No. 1 ejection hole, a No. 1 ejection structure is installed in the bottom mold, the No. 1 ejection structure can drive the end of the No. 1 ejection rod to extend out of the No. 1 ejection hole and enter the mold cavity, and the L-shaped hook can drive the No. 1 ejection structure to work; A No. 2 ejection hole is opened on the top inner wall of the upper mold cavity, and a No. 2 ejection rod is slidably installed in the No. 2 ejection hole. The No. 2 ejection structure can drive the end of the No. 2 ejection rod to extend out of the No. 2 ejection hole and enter the mold cavity, and the L-shaped hook can drive the No. 2 ejection structure to work.

[0006] Preferably, the No. 1 ejection structure includes a No. 1 inclined surface block, a No. 1 driving rod, a No. 1 spring, a No. 1 driving block and a driving assembly; the No. 1 inclined surface block is fixedly mounted on the other end of the No. 1 ejection rod, the bottom mold is provided with a No. 1 telescopic groove that slidably cooperates with the No. 1 inclined surface block, the No. 1 spring is located in the No. 1 telescopic groove, and the two ends of the No. 1 spring respectively abut against the end inner wall of the No. 1 telescopic groove and the No. 1 inclined surface block, the bottom mold is provided with a No. 1 adjustment groove that slidably cooperates with the No. 1 driving rod, a No. 1 push spring is installed in the No. 1 adjustment groove, and the two ends of the No. 1 push spring respectively abut against the end of the No. 1 driving rod and the end inner wall of the No. 1 adjustment groove, the No. 1 driving block is fixedly connected to the No. 1 driving rod, the No. 1 spring is slidably cooperated with the inclined surface of the No. 1 driving block, and the movement direction of the No. 1 driving block is arranged perpendicular to the movement direction of the No. 1 spring; The driving assembly can convert the insertion action of the L-shaped hook into the buckle slot into the sliding action of the No. 1 driving rod in the No. 1 adjustment slot.

[0007] Preferably, the driving assembly comprises a pressing block, a side block and a lifting spring; the pressing block is slidably mounted in the buckle groove, the end of the No. 1 driving rod is slidably matched with the inclined surface of the pressing block, the side block is fixedly connected to one side of the pressing block, the lower mounting block is provided with an anti-slip groove slidably matched with the side block, the lifting spring is installed in the anti-slip groove, and the two ends of the lifting spring are respectively connected to the side block and the bottom inner wall of the anti-slip groove; When the vertical section of the L-shaped hook is inserted into the buckle slot, the end of the vertical section of the L-shaped hook can abut against the pressing block and drive the pressing block to slide in the buckle slot.

[0008] Preferably, the No. 2 ejection structure comprises a No. 2 inclined surface block, a No. 2 spring, a No. 2 driving rod, a No. 2 driving block and a unidirectional driving structure; the No. 2 inclined surface block is fixedly connected to one end of the No. 2 ejection rod, a No. 2 telescopic groove slidingly matched with the No. 2 inclined surface block is provided in the upper mold, the No. 2 spring is located in the No. 2 telescopic groove, the two ends of the No. 2 spring are respectively connected to the No. 2 inclined surface block and the inner wall of the No. 2 telescopic groove, a No. 2 adjusting groove slidingly matched with the No. 2 driving rod is provided in the upper mold, a No. 2 pushing spring is arranged in the No. 2 adjusting groove, the two ends of the No. 2 pushing spring are respectively against the end of the No. 2 driving rod and the inner wall of the end of the No. 2 adjusting groove, the No. 2 driving block is fixedly connected in the No. 2 adjusting groove, and the No. 2 inclined surface block is slidingly matched with the inclined surface of the No. 2 driving block; The one-way driving structure is fixedly mounted on the L-shaped hook. When the L-shaped hook slides, the one-way driving structure can drive the second driving rod to slide in the second adjusting groove.

[0009] Preferably, the one-way driving structure includes a top block and a toggle block; the top block is fixedly mounted on the L-shaped hook, a driving groove that slides with the top block is provided in the upper mounting block, a receiving groove is provided on the top block, the toggle block is rotatably mounted in the receiving groove via a rotating shaft, the toggle block can be rotatably stored in the receiving groove, a torsion spring is mounted on the rotating shaft of the toggle block, and a plurality of toggle grooves that match the toggle block are provided on the No. 2 driving rod.

[0010] Preferably, an anti-deviation structure is installed on the No. 2 driving rod. When the upper mold rotates at high speed, the anti-deviation structure can prevent the No. 2 driving rod from sliding in the No. 2 adjusting groove due to centrifugal force.

[0011] Preferably, the anti-deviation structure includes an anti-slip pin, a retraction spring, an inclined ejection block and a return spring; a positioning hole slidably matched with the anti-slip pin is provided on the No. 2 driving rod, and the anti-slip pin can be received in the positioning hole; a plurality of positioning grooves matched with the end of the anti-slip pin are provided on the inner wall of the No. 2 adjusting groove; the retraction spring is located in the positioning hole; the two ends of the retraction spring are respectively connected with the big head end of the anti-slip pin and the end of the positioning block; a driving groove slidably matched with the inclined ejection block is also provided in the No. 2 driving rod; the inclined surface of the inclined ejection block slidably matches with the end of the anti-slip pin; the return spring is installed in the driving groove; the two ends of the return spring are respectively connected with the end of the inclined ejection block and the inner wall of the end of the driving groove.

[0012] Preferably, a disc is mounted on the transverse section of the L-shaped hook, a reset groove slidably matched with the disc is provided in the upper mounting block, a clamping spring is installed in the reset groove, and both ends of the clamping spring respectively abut against the end inner wall of the reset groove and the disc.

[0013] Preferably, a vertically arranged alignment rod is fixedly connected to the lower mounting block, and an alignment hole matching the alignment rod is provided on the upper mounting block; The outer periphery of the workbench is sleeved with a protective tube.

[0014] The TPU microporous foam tire molding equipment proposed by the present invention has the following beneficial effects: through the arranged workbench, bottom mold, upper mold, lower mounting block, upper mounting block, L-shaped hook, No. 1 ejector rod, No. 1 ejector structure, No. 2 ejector rod and No. 2 ejector structure, it can ensure the uniform weight distribution of the entire mold, reduce the eccentricity caused by uneven weight distribution during high-speed rotation and cause uneven material distribution, ensure the quality of the tire, and can also complete the demolding of the tire while opening the mold, without the need for manual demolding by the staff, reducing the labor of the staff, reducing the number of processes, saving time, and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of a TPU microcellular foam tire molding equipment proposed in the present invention.

[0016] Figure 2 The present invention provides a schematic structural diagram of a bottom mold and a lower mounting block in a TPU microcellular foam tire molding device.

[0017] Figure 3 The present invention provides a side cross-sectional view of the entire mold when the mold is closed in a TPU microcellular foam tire molding device.

[0018] Figure 4 The present invention provides a partial cross-sectional view of a mold in a TPU microcellular foam tire molding device.

[0019] Figure 5 The present invention provides a schematic structural diagram of a No. 1 ejector rod and a No. 1 inclined surface in a TPU microcellular foam tire molding device proposed by the present invention.

[0020] Figure 6 The present invention provides a schematic structural diagram of a pressing block and a side block in a TPU microcellular foam tire molding device.

[0021] Figure 7 The present invention provides a schematic structural diagram of an L-shaped hook, a top block and a toggle block in a TPU microcellular foam tire molding device proposed by the present invention.

[0022] Figure 8 This is a structural cross-sectional view of a one-way driving structure in a TPU microcellular foam tire molding device proposed by the present invention.

[0023] Fig. 9 The present invention provides a structural cross-sectional view of an anti-deviating structure in a TPU microcellular foam tire molding device.

[0024] Fig.10 This is a schematic structural diagram of a No. 2 driving rod in a TPU microcellular foam tire molding device proposed in the present invention.

[0025] In the figure: 1. workbench; 2. bottom mold; 3. upper mold; 4. lower mounting block; 5. upper mounting block; 6. L-shaped hook; 7. No. 1 ejector rod; 8. No. 2 ejector rod; 9. No. 1 inclined block; 10. No. 1 driving rod; 11. No. 1 spring; 12. No. 1 driving block; 13. No. 1 pushing spring; 14. pressing block; 15. side block; 16. lifting spring; 17. No. 2 inclined block; 18. No. 2 spring; 19. No. 2 driving rod; 20. No. 2 driving block; 21. No. 2 pushing spring; 22. ejector block; 23. toggle block; 24. toggle slot; 25. anti-slip pin; 26. retraction spring; 27. inclined ejector block; 28. return spring; 29. ​​clamping spring; 30. alignment rod; 31. protective tube. DETAILED DESCRIPTION

[0026] Reference Figure 1-Figure 10 The present invention proposes a TPU microcellular foam tire molding device, including a workbench 1, a bottom mold 2 is rotatably installed on the top surface of the workbench 1, the bottom mold 2 is driven by a motor to rotate at a high speed, the bottom mold 2 is arranged horizontally, a lower mold groove is provided on the top surface of the bottom mold 2, an upper mold 3 is detachably installed on the bottom mold 2, an upper mold groove is provided on the bottom surface of the upper mold 3, the upper mold groove and the lower mold groove are combined to form a mold cavity, the outer periphery of the bottom mold 2 is symmetrically installed with lower mounting blocks 4, the number of the lower mounting blocks 4 is two, the outer periphery of the upper mold 3 is symmetrically installed with upper mounting blocks 5, the number of the upper mounting blocks 5 is also two, the number of the upper mounting blocks 5 is the same as the number of the lower mounting blocks 4 and is arranged one by one, a switch slide is provided on the upper mounting block 5, an L-shaped hook 6 is slidably installed in the switch slide, and the shape of the L-shaped hook 6 is as follows Figure 7 As shown in the figure, the bottom end of the vertical section of the L-shaped hook 6 is provided with a side inclined block; the horizontal section of the L-shaped hook 6 slides through the inner wall of the switch slide groove and extends to the outside of the upper mounting block 5, and the lower mounting block 4 is provided with a buckle groove that is engaged with the vertical section of the L-shaped hook 6; the L-shaped hook 6 and the buckle groove on the lower mounting block 4 are engaged as shown in the figure. Figure 3 and Figure 4 As shown in , when the mold is rotated at high speed, the L-shaped hook 6 will move outward with the centrifugal force and be tightly clamped to ensure the mold closing state of the bottom mold 2 and the upper mold 3. The structure is simple and the installation is firm.

[0027] It should be noted that the bottom mold 2 and the lower mounting block 4 can be regarded as one body, and the upper mold 3 and the upper mounting block 5 can also be regarded as one body. In the following text, the component structure is in the two structures and is not explained in detail.

[0028] In actual operation, after the tire is formed, the staff removes the upper mold 3, then uses an air gun to aim at the air holes on the bottom mold 2, and uses air pressure to demold the tire from the bottom mold 2. However, the tire is formed at a fast speed, and the staff needs to use the air gun frequently, with high repetition, which easily leads to fatigue. Therefore, automatic demolding is designed for it. Because the bottom mold 2 and the upper mold 3 are in a state of high-speed rotation during the forming process, the use of external power drive requires the design of wiring and piping, which is relatively inconvenient. Therefore, the following design is proposed.

[0029] like Figure 3 , Figure 4 and Figure 5 As shown in the figure, the bottom inner wall of the cavity of the bottom mold 2 is provided with a No. 1 ejection hole, and a No. 1 ejection rod 7 is slidably installed in the No. 1 ejection hole. A No. 1 ejection structure is installed in the bottom mold 2, and the No. 1 ejection structure can drive the end of the No. 1 ejection rod 7 to extend out of the No. 1 ejection hole and enter the cavity, and the L-shaped hook 6 can drive the No. 1 ejection structure to work; when demolding after the tire is formed, the upper mold 3 is removed, and the L-shaped hook 6 is pressed first so that the L-shaped hook 6 is disengaged from the buckle groove, and the No. 1 ejection structure works, and the No. 1 ejection structure drives the No. 1 ejection rod 7 to extend out of the ejection hole to eject the tire from the lower mold groove to prevent the tire from being stuck in the lower mold groove.

[0030] like Figure 3 , Figure 4 and Figure 5 As shown in , a No. 2 ejection hole is opened on the top inner wall of the cavity of the upper mold 3, and a No. 2 ejection rod 8 is slidably installed in the No. 2 ejection hole. The No. 2 ejection structure can drive the end of the No. 2 ejection rod 8 to extend out of the No. 2 ejection hole and enter the cavity, and the L-shaped hook 6 can drive the No. 2 ejection structure to work. During demoulding, the L-shaped hook 6 slides and resets in the switch slide groove to make the No. 2 ejection structure work, and the No. 2 ejection structure drives the No. 2 ejection rod 8 to extend out of the No. 2 ejection hole to eject the tire from the upper mold groove, completing the demoulding operation of the tire, without the need for the staff to frequently manually use an air gun to aim at the air hole to blow out the tire; the driving operations of the No. 1 ejection structure and the No. 2 ejection structure are all related to the L-shaped hook 6, without the need for external power, avoiding the design troubles of wiring and piping, ensuring the normal operation of the ejection structure, and the symmetrical structural design ensures that the entire mold can be stable during high-speed rotation, reduces the eccentricity caused by uneven weight distribution, ensures uniform material distribution, and ensures the quality of the tire after molding.

[0031] like Figure 3 , Figure 4 and Figure 5As shown in, the No. 1 ejection structure includes a No. 1 inclined surface block 9, a No. 1 driving rod 10, a No. 1 spring 11, a No. 1 driving block 12 and a driving assembly; the No. 1 inclined surface block 9 is fixedly installed at the other end of the No. 1 ejection rod 7, and the bottom mold 2 is provided with a No. 1 telescopic groove that slides with the No. 1 inclined surface block 9, and the No. 1 spring 11 is located in the No. 1 telescopic groove. The two ends of the No. 1 spring 11 respectively abut against the end inner wall of the No. 1 telescopic groove and the No. 1 inclined surface block 9, and the No. 1 ejection rod 7 is driven to slide by the rebound effect of the No. 1 spring 11, so as to drive the No. 1 ejection rod 7 to retract into the No. 1 ejection hole, and the bottom mold 2 is provided with a No. 1 adjustment groove that slides with the No. 1 driving rod 10, and a No. 1 push spring 13 is installed in the No. 1 adjustment groove, and the two ends of the No. 1 push spring 13 respectively abut against the end of the No. 1 driving rod 10 and the end inner wall of the No. 1 adjusting groove, and the No. 1 drive rod 10 is driven to slide in the No. 1 adjustment groove by the rebound effect of the No. 1 push spring 13. The first drive block 12 is fixedly connected to the first drive rod 10, and the first spring 11 is slidably matched with the inclined surface of the first drive block 12. The movement direction of the first drive block 12 is arranged perpendicular to the movement direction of the first spring 11; the driving component can convert the insertion action of the L-shaped hook 6 into the buckle groove into the sliding action of the No. 1 drive rod 10 in the No. 1 adjustment groove. When the L-shaped hook 6 is out of the buckle groove, the driving component is not squeezed by the L-shaped hook 6, and the driving component slides and resets. The rebound action of the No. 1 push spring 13 pushes the No. 1 drive rod 10 to slide in the No. 1 adjustment groove, and the No. 1 drive rod 10 drives the No. 1 drive block 12 to move synchronously. The inclined surface of the No. 1 drive block 12 and the inclined surface of the No. 1 inclined surface block 9 slide in the No. 1 telescopic groove, and the No. 1 inclined surface block 9 drives the No. 1 ejection rod 7 to move synchronously, and the end of the No. 1 ejection rod 7 extends out of the No. 1 ejection hole to eject the tire from the lower mold groove.

[0032] like Figure 3 , Figure 4 , Figure 5 and Figure 6As shown in the figure, the driving assembly includes a pressing block 14, a side block 15 and a lifting spring 16; the pressing block 14 is slidably installed in the buckle groove, the end of the No. 1 driving rod 10 is slidably matched with the inclined surface of the pressing block 14, the side block 15 is fixedly connected to one side of the pressing block 14, and an anti-slip groove that slides with the side block 15 is opened in the lower mounting block 4, and the lifting spring 16 is installed in the anti-slip groove, and the two ends of the lifting spring 16 are respectively connected to the side block 15 and the bottom inner wall of the anti-slip groove; when the L-shaped card When the vertical section of the hook 6 is inserted into the buckle groove, the end of the vertical section of the L-shaped hook 6 can abut against the pressing block 14 and drive the pressing block 14 to slide in the buckle groove. When the mold is closed, the vertical section of the L-shaped hook 6 is inserted into the buckle groove, and the end of the vertical section of the L-shaped hook 6 abuts against the pressing block 14 and pushes the pressing block 14 to move downward in the buckle groove. When the pressing block 14 moves downward, the inclined surface of the pressing block 14 and the end of the No. 1 driving rod 10 slide together, so that the No. 1 driving rod 10 is in the No. 1 driving groove. The first driving rod 10 drives the first driving block 12 to slide synchronously, and the first inclined surface block 9 and the first ejection rod 7 are lowered under the rebound action of the first spring 11, and the first ejection rod 7 is retracted into the first ejection hole until the end of the first ejection rod 7 is flush with the bottom inner wall of the lower die groove; when the L-shaped hook 6 is out of the buckle groove, the side block 15 and the pressing block 14 are driven to rise and reset synchronously under the rebound action of the lifting spring 16, and the first driving rod 10 is not pressed. The inclined surface of the pressure block 14 is squeezed, and the No. 1 driving rod 10 slides and resets under the rebound pushing action of the No. 1 pushing spring 13, and the No. 1 driving rod 10 drives the No. 1 driving block 12 to slide synchronously, and the inclined surface of the No. 1 driving block 12 and the No. 1 inclined surface block 9 slide and cooperate, so that the No. 1 ejection rod 7 is withdrawn from the No. 1 ejection hole, and the demoulding of the tire is completed. The demoulding action is carried out synchronously when the mold is opened, and no additional manual operation is required by the staff, which reduces the workload of the staff, reduces the process, saves time, and improves work efficiency.

[0033] like Figure 3 and Figure 4 As shown in the figure, the second ejection structure includes a second inclined surface block 17, a second spring 18, a second drive rod 19, a second drive block 20 and a one-way drive structure; the structure of the second ejection rod 8 is the same as that of the first ejection rod 7, and the structure of the second inclined surface block 17 is the same as that of the first inclined surface block 9. The structure of the second ejection rod 8 and the second inclined surface block 17 can be referred to Figure 5The second inclined surface block 17 is fixedly connected to one end of the second ejection rod 8, and the upper mold 3 is provided with a second telescopic groove that slides with the second inclined surface block 17. The second spring 18 is located in the second telescopic groove, and the two ends of the second spring 18 are respectively connected to the inner wall of the second inclined surface block 17 and the second telescopic groove. The upper mold 3 is provided with a second adjustment groove that slides with the second drive rod 19. The second adjustment groove is provided with a second push spring 21, and the two ends of the second push spring 21 are respectively connected to the end of the second drive rod 19. The inner wall of the end of the No. 2 adjusting groove abuts against the No. 2 driving block 20, which is fixedly connected in the No. 2 adjusting groove, and the No. 2 inclined surface block 17 slides with the inclined surface of the No. 2 driving block 20; the one-way driving structure is fixedly installed on the L-shaped hook 6, and when the L-shaped hook 6 slides, the one-way driving structure can drive the No. 2 driving rod 19 to slide in the No. 2 adjusting groove. When opening the mold, the staff needs to press the L-shaped hook 6 to disengage the L-shaped hook 6 from the buckle groove. When pressed, the L-shaped hook 6 will be in the switch slide groove When sliding horizontally, when pressing the L-shaped hook 6, the bottom mold 2 and the upper mold 3 still need to be in a mold-closing state. When the L-shaped hook 6 moves upward from the buckle groove, the bottom mold 2 and the upper mold 3 are in a gradually opening state. Therefore, when pressing the L-shaped hook 6, it is necessary to control the extension of the No. 2 ejector rod 8 to reduce the occurrence of the No. 2 ejector rod 8 ejecting and pushing the tire. Under the interaction of forces, the L-shaped hook 6 is stuck in the buckle groove and is not easy to disengage. Therefore, the sliding of the No. 2 drive rod 19 is driven by the one-way drive structure. Only when the L-shaped hook 6 slides and resets in the switch slide groove, the L-shaped hook 6 will drive the No. 2 driving rod 19 to slide in the No. 2 adjusting groove through the one-way driving structure, thereby driving the No. 2 driving block 20 to slide synchronously. When the No. 2 driving block 20 slides, the inclined surface of the No. 2 driving block 20 slides with the inclined surface of the No. 2 inclined surface block 17, driving the No. 2 inclined surface block 17 and the No. 2 ejector rod 8 to move downward, so that the No. 2 ejector rod 8 extends out of the No. 2 ejection hole, and ejects the tire out of the upper mold groove, completing the demolding operation.

[0034] like Figure 3 , Figure 4 , Figure 7 and Figure 8As shown in, the one-way drive structure includes a top block 22 and a toggle block 23; the top block 22 is fixedly mounted on the L-shaped hook 6, a driving groove that slides with the top block 22 is provided in the upper mounting block 5, a receiving groove is provided on the top block 22, the toggle block 23 is rotatably mounted in the receiving groove through a rotating shaft, the toggle block 23 can be rotatably stored in the receiving groove, a torsion spring is mounted on the rotating shaft of the toggle block 23, and a plurality of toggle grooves 24 that are compatible with the toggle block 23 are provided on the No. 2 driving rod 19. When the L-shaped hook 6 is pressed, the toggle block 23 is blocked and rotated by the inner wall of the toggle groove 24, and the toggle block 23 is rotated and stored in the storage groove to ensure the sliding of the top block 22 and the L-shaped hook 6. When the L-shaped hook 6 slides and resets, the L-shaped The hook 6 drives the top block 22 to slide synchronously. Due to the action of the torsion spring, the toggle block 23 is always in a rotated and upright state (the toggle block 23 can be rotated and stuck in the toggle slot 24 at the corresponding position). The toggle block 23 abuts against the inner wall of the toggle slot 24 on the No. 2 driving rod 19 and cannot continue to rotate. When the L-shaped hook 6 slides and resets, the L-shaped hook 6 will drive the top block 22 and the toggle block 23 to move synchronously. The toggle block 23 is stuck in the toggle slot 24 and drives the No. 2 driving rod 19 to slide horizontally, thereby completing the ejection action of driving the No. 2 ejection rod 8. It should be noted that the sliding of the No. 2 driving rod 19 is not a horizontal sliding. The lateral sliding of the No. 2 driving rod 19 has a certain inclination. For example, Figure 4 When the No. 2 driving rod 19 slides from left to right, the No. 2 driving rod 19 moves upward at an angle, so that the toggle block 23 can be disengaged from the toggle slot 24, and then the No. 2 driving rod 19 is pushed to slide and reset under the action of the No. 2 pushing spring 21, so that the No. 2 ejection rod 8 is retracted into the No. 2 ejection hole.

[0035] In actual situations, when the mold rotates at high speed, centrifugal force will be generated, and the L-shaped hook 6 will be stuck tighter due to the centrifugal force, and the No. 1 driving rod 10 will be blocked by the pressing block 14 and cannot move. The No. 1 driving rod 10 squeezes the pressing block 14, driving the pressing block 14 to move upward, and the pressing block 14 presses against the L-shaped hook 6 to make the L-shaped hook 6 stick tighter, and the No. 2 driving rod 19 will have a tendency to slide in the No. 2 adjusting groove due to the centrifugal force. When the No. 2 driving rod 19 is transmitting and moving, it may drive the No. 2 ejector rod 8 to extend out of the No. 2 ejector hole. Therefore, the following design is made for it to ensure the molding quality of the tire.

[0036] like Figure 3 , Figure 4 , Fig. 9 and Fig.10As shown in, an anti-drift structure is installed on the No. 2 driving rod 19. When the upper mold 3 rotates at a high speed, the anti-drift structure can prevent the No. 2 driving rod 19 from sliding in the No. 2 adjusting groove due to centrifugal force. The anti-drift structure includes an anti-sliding pin 25, a retraction spring 26, a ramp ejection block 27 and a return spring 28; the material of the ramp ejection block 27 is metal (such as copper, stainless steel, etc.), and a positioning hole that slidably cooperates with the anti-sliding pin 25 is provided on the No. 2 driving rod 19. The anti-sliding pin 25 and the No. 2 driving rod 19 are arranged vertically, and the anti-sliding pin 25 can be received in the positioning hole. The inner wall of the No. 2 adjusting groove is provided with a plurality of positioning grooves that are compatible with the ends of the anti-sliding pin 25. The retraction spring 26 is located in the positioning hole, and the two ends of the retraction spring 26 are respectively connected to the big head end of the anti-sliding pin 25 and the end of the positioning block. The No. 2 driving rod 19 also has a positioning hole that slidably cooperates with the ramp ejection block. The ejection block 27 slides with the driving groove, the inclined surface of the inclined ejection block 27 slides with the end of the anti-slip pin 25, and the return spring 28 is installed in the driving groove. The two ends of the return spring 28 are respectively connected to the end of the inclined ejection block 27 and the inner wall of the end of the driving groove. When the mold rotates at a high speed, due to the large mass of the inclined ejection block 27, the inclined ejection block 27 will slide preferentially due to the centrifugal force. When the inclined ejection block 27 slides, it slides with the bottom surface of the anti-slip pin 25 to eject the anti-slip pin 25 out of the positioning hole. The anti-slip pin 25 is ejected out of the positioning hole and enters the positioning groove and gets stuck, thereby blocking the position of the No. 2 driving rod 19, reducing the sliding of the No. 2 driving rod 19 due to the centrifugal force, ensuring the quality of the tire, and the anti-slip pin 25 is driven by the retraction spring 26 to slide and reset, and the inclined ejection block 27 is pulled by the return spring 28 to slide and reset.

[0037] like Figure 3 , Figure 4 and Figure 7 As shown in the figure, a disc is mounted on the transverse section of the L-shaped hook 6, and a reset groove is provided in the upper mounting block 5 for slidingly cooperating with the disc. A clamping spring 29 is installed in the reset groove, and the two ends of the clamping spring 29 are respectively against the inner wall of the end of the reset groove and the disc, and the clamping spring 29 pushes the disc and the L-shaped hook 6 to slide and reset.

[0038] like Figure 1 and Figure 2 As shown in the figure, a vertically arranged alignment rod 30 is fixedly connected to the lower mounting block 4, and an alignment hole matched with the alignment rod 30 is opened on the upper mounting block 5, so as to facilitate the alignment and clamping of the upper and lower molds.

[0039] like Figure 1 As shown in FIG, a protective tube 31 is provided on the outer periphery of the workbench 1. The opening of the protective tube 31 is higher than the mold, which plays a certain protective role.

[0040] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A TPU microcellular foaming tire molding equipment, characterized in that: The workbench (1) comprises a workbench (1), wherein a bottom mold (2) is rotatably mounted on the top surface of the workbench (1), the bottom mold (2) being arranged horizontally, an upper mold (3) being detachably mounted on the bottom mold (2), a mold cavity being provided between the bottom mold (2) and the upper mold (3), a lower mounting block (4) being symmetrically mounted on the outer periphery of the bottom mold (2), an upper mounting block (5) being symmetrically mounted on the outer periphery of the upper mold (3), the number of the upper mounting blocks (5) being the same as the number of the lower mounting blocks (4) and being arranged one-to-one, a switch slide groove being provided on the upper mounting block (5), an L-shaped hook (6) being slidably mounted in the switch slide groove; the transverse section of the L-shaped hook (6) slidingly passes through the inner wall of the switch slide groove and extends to the outside of the upper mounting block (5), and the lower mounting block (4) being provided with a buckle groove for being engaged with the vertical section of the L-shaped hook (6); The bottom inner wall of the mold cavity of the bottom mold (2) is provided with a No. 1 ejection hole, a No. 1 ejection rod (7) is slidably installed in the No. 1 ejection hole, a No. 1 ejection structure is installed in the bottom mold (2), the No. 1 ejection structure can drive the end of the No. 1 ejection rod (7) to extend out of the No. 1 ejection hole and enter the mold cavity, and the L-shaped hook (6) can drive the No. 1 ejection structure to work; A No. 2 ejection hole is formed on the top inner wall of the mold cavity of the upper mold (3), and a No. 2 ejection rod (8) is slidably installed in the No. 2 ejection hole. The No. 2 ejection structure can drive the end of the No. 2 ejection rod (8) to extend out of the No. 2 ejection hole and enter the mold cavity, and the L-shaped hook (6) can drive the No. 2 ejection structure to work.

2. A TPU microcellular foam tire molding equipment according to claim 1, characterized in that: The No. 1 ejection structure comprises a No. 1 inclined surface block (9), a No. 1 driving rod (10), a No. 1 spring (11), a No. 1 driving block (12) and a driving assembly; the No. 1 inclined surface block (9) is fixedly mounted on the other end of the No. 1 ejection rod (7); a No. 1 telescopic groove slidably matched with the No. 1 inclined surface block (9) is provided in the bottom mold (2); the No. 1 spring (11) is located in the No. 1 telescopic groove; the two ends of the No. 1 spring (11) respectively abut against the end inner wall of the No. 1 telescopic groove and the No. 1 inclined surface block (9); the bottom mold (2) is provided with a No. 1 telescopic groove. A No. 1 adjustment groove is provided which is slidably matched with the No. 1 driving rod (10), a No. 1 push spring (13) is installed in the No. 1 adjustment groove, two ends of the No. 1 push spring (13) respectively abut against the end of the No. 1 driving rod (10) and the inner wall of the end of the No. 1 adjustment groove, the No. 1 driving block (12) is fixedly connected to the No. 1 driving rod (10), the No. 1 spring (11) is slidably matched with the inclined surface of the No. 1 driving block (12), and the movement direction of the No. 1 driving block (12) is arranged perpendicular to the movement direction of the No. 1 spring (11); The driving assembly is capable of converting the insertion action of the L-shaped hook (6) into the buckle slot into the sliding action of the No. 1 driving rod (10) in the No. 1 adjustment slot.

3. A TPU microcellular foam tire molding equipment according to claim 2, characterized in that: The driving assembly comprises a pressing block (14), a side block (15) and a lifting spring (16); the pressing block (14) is slidably mounted in the buckle groove, the end of the No. 1 driving rod (10) is slidably matched with the inclined surface of the pressing block (14), the side block (15) is fixedly connected to one side of the pressing block (14), the lower mounting block (4) is provided with an anti-slip groove slidably matched with the side block (15), the lifting spring (16) is installed in the anti-slip groove, and the two ends of the lifting spring (16) are respectively connected to the side block (15) and the bottom inner wall of the anti-slip groove; When the vertical section of the L-shaped hook (6) is inserted into the buckle slot, the end of the vertical section of the L-shaped hook (6) can abut against the pressing block (14) and drive the pressing block (14) to slide in the buckle slot.

4. A TPU microcellular foam tire molding equipment according to claim 1, characterized in that: The second ejection structure comprises a second inclined surface block (17), a second spring (18), a second driving rod (19), a second driving block (20) and a one-way driving structure; the second inclined surface block (17) is fixedly connected to one end of the second ejection rod (8); a second telescopic groove slidably matched with the second inclined surface block (17) is provided in the upper mold (3); the second spring (18) is located in the second telescopic groove; two ends of the second spring (18) are respectively connected to the second inclined surface block (17), The upper mold (3) is connected to the inner wall of the No. 2 telescopic groove, a No. 2 adjusting groove is provided in the upper mold (3) and is slidably matched with the No. 2 driving rod (19), a No. 2 pushing spring (21) is provided in the No. 2 adjusting groove, two ends of the No. 2 pushing spring (21) are respectively abutted against the end of the No. 2 driving rod (19) and the inner wall of the end of the No. 2 adjusting groove, the No. 2 driving block (20) is fixedly connected in the No. 2 adjusting groove, and the No. 2 inclined surface block (17) is slidably matched with the inclined surface of the No. 2 driving block (20); The one-way driving structure is fixedly mounted on the L-shaped hook (6); when the L-shaped hook (6) slides, the one-way driving structure can drive the second driving rod (19) to slide in the second adjusting groove.

5. A TPU microcellular foam tire molding equipment according to claim 4, characterized in that: The one-way driving structure comprises a top block (22) and a toggle block (23); the top block (22) is fixedly mounted on the L-shaped hook (6); a driving groove slidably matched with the top block (22) is provided in the upper mounting block (5); a receiving groove is provided on the top block (22); the toggle block (23) is rotatably mounted in the receiving groove via a rotating shaft; the toggle block (23) can be rotatably received in the receiving groove; a torsion spring is mounted on the rotating shaft of the toggle block (23); and a plurality of toggle grooves (24) matched with the toggle block (23) are provided on the second driving rod (19).

6. A TPU microcellular foam tire molding equipment according to claim 1, characterized in that: An anti-deviating structure is installed on the second driving rod (19), and when the upper mold (3) rotates at a high speed, the anti-deviating structure can prevent the second driving rod (19) from sliding in the second adjusting groove due to centrifugal force.

7. A TPU microcellular foam tire molding equipment according to claim 6, characterized in that: The anti-deviating structure comprises an anti-slip pin (25), a retraction spring (26), an inclined ejection block (27) and a return spring (28); a positioning hole slidably matched with the anti-slip pin (25) is provided on the second drive rod (19); the anti-slip pin (25) can be received in the positioning hole; a plurality of positioning grooves matched with the ends of the anti-slip pin (25) are provided on the inner wall of the second adjustment groove; the retraction spring (26) is located in the positioning hole; the retraction spring (26) is arranged in the positioning hole; the The two ends of the anti-slip pin (26) are respectively connected to the large end of the anti-slip pin (25) and the end of the positioning block. The second driving rod (19) is also provided with a driving groove that is slidably matched with the inclined ejection block (27). The inclined surface of the inclined ejection block (27) is slidably matched with the end of the anti-slip pin (25). The return spring (28) is installed in the driving groove. The two ends of the return spring (28) are respectively connected to the end of the inclined ejection block (27) and the inner wall of the end of the driving groove.

8. The TPU microcellular foam tire molding equipment according to claim 1, characterized in that: A disc is mounted on the transverse section of the L-shaped hook (6), a reset groove slidably matched with the disc is provided in the upper mounting block (5), a clamping spring (29) is installed in the reset groove, and two ends of the clamping spring (29) respectively abut against the inner wall of the end of the reset groove and the disc.

9. The TPU microcellular foam tire molding equipment according to claim 1, characterized in that: A vertically arranged alignment rod (30) is fixedly connected to the lower mounting block (4), and an alignment hole matching the alignment rod (30) is provided on the upper mounting block (5); The outer periphery of the workbench (1) is provided with a protective tube (31).

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