A push-up mold facilitating inner mold demolding

Abstract

The utility model provides a kind of push pipe mould convenient to inner die stripping, it is related to push pipe mould technical field, including lower mould plate, inner stripping structure and upper mould plate, the upper portion of lower mould plate is provided with lower cushion block, and the upper portion of lower cushion block is provided with lower heat insulation plate, lower cushion block and lower heat insulation plate are equipped with inner stripping structure, and the upper portion of lower heat insulation plate is provided with first lower female die, the lower portion of upper mould plate is provided with upper cushion block, the lower portion of upper heat insulation plate is provided with upper heating plate, and the lower end surface middle portion of upper heating plate is provided with inner extrusion block, and the periphery of inner extrusion block is provided with male die, and push pipe is injection molded between first lower female die, inner extrusion block and male die.The utility model mould product production positioning is stable and accurate, pouring is fast and uniform, and it is convenient and fast to help mould product cooling forming, when stripping, mould product inner and outer surface can be cleanly removed adherend, burr, stripping is more fast and convenient and guarantees stripping quality, more efficient and practical.

Description

Technical Field

[0001] This utility model relates to the field of pipe jacking mold technology, specifically to a pipe jacking mold that facilitates demolding of the inner mold. Background Technology

[0002] Pipe jacking is a trenchless construction method, a technology for laying pipelines with little or no excavation. In the working pit, the jacking equipment uses its jacking force to overcome the friction between the pipeline and the surrounding soil, pushing the pipeline into the ground at the designed slope, and then removing the excavated soil.

[0003] The specification of a top tube mold for easy demolding of an inner mold (publication number CN215094512U) mentions that "a rotary inner mold collecting device includes a fixed shaft fixed to a base, the fixed shaft being located at the center of the inner mold, and an upper rotating disk and a lower rotating disk fixed to the upper and lower ends of the fixed shaft by bearings. Arc-shaped guide holes are provided at four corresponding positions on the upper and lower rotating disks. The free ends of the connecting rods are respectively engaged in the arc-shaped guide holes, and before demolding, the connecting rods are located at one end of the arc-shaped guide holes. The arc-shaped guide holes are symmetrical in pairs, with one pair being symmetrical." The diameter of the arc-shaped guide hole decreases continuously towards the fixed axis, and the arc-shaped guide hole with the continuously decreasing diameter is connected to the arc-shaped plate that was demolded first; the diameter of the front part of the other pair of arc-shaped guide holes remains unchanged and is concentric with the upper and lower rotating disks, while the diameter of the rear part decreases continuously towards the fixed axis; a rotation drive device for the upper and lower rotating disks is provided on the fixed axis. However, the internal demolding process in the existing technology cannot cleanly remove the adhering substances and burrs on the inner and outer sides of the molded product, resulting in the top mold not being completely removed, which cannot guarantee the quality of the demolded product and is not efficient and practical. Utility Model Content

[0004] To overcome the shortcomings of existing technologies, a top tube mold that facilitates demolding from the inner mold is provided. This solves the problem that existing technologies cannot cleanly remove adhering substances and burrs from the inner and outer surfaces of the molded product during the inner demolding process, resulting in incomplete and unclean demolding, which fails to guarantee the quality of the demolded product and is not efficient or practical.

[0005] To achieve the above objectives, a top tube mold for easy demolding of the inner mold is provided, comprising a lower mold plate, an inner demolding structure, and an upper mold plate. A lower pad block is provided on the upper part of the lower mold plate, and a lower heat insulation plate is provided on the upper part of the lower pad block. The inner demolding structure is installed between the lower pad block and the lower heat insulation plate, and a first lower concave mold is provided on the upper part of the lower heat insulation plate. External telescopic cylinders are fixed on both sides of the upper end face of the lower mold plate, and the upper ends of the external telescopic cylinders are fixed to the lower part of the upper mold plate. An upper pad block is provided on the lower part of the upper mold plate, and an upper heat insulation plate is provided on the lower part of the upper heat insulation plate. An inner extrusion block is provided in the middle of the lower end face of the upper heating plate, and a punch is sleeved around the inner extrusion block. A top tube is injection molded between the first lower concave mold, the inner extrusion block, and the punch.

[0006] Furthermore, a first groove is provided in the middle of the first lower die, and an outer insert is provided on the lower end face of the punch. An upper groove is provided between the inner wall of the inner extrusion block and the outer side of the outer insert and the outer side of the inner extrusion block, and the top tube is located in the upper groove.

[0007] Furthermore, the inner extrusion block is provided with a first external cooling cavity, and the outer insert is provided with a second external cooling cavity, while the inner extrusion block is provided with a first internal cooling cavity.

[0008] Furthermore, the lower part of the inner extrusion block is provided with a first upper groove, and multiple sets of cooling water pipes are sleeved inside the first outer cooling cavity, the second outer cooling cavity, and the first inner cooling cavity.

[0009] Furthermore, the upper template has a pouring gate in its core, and the upper pad and the upper heat insulation plate have an upper flow channel in their center, and a branch channel is provided between the upper heating plate and the punch.

[0010] Furthermore, the pouring port, the upper runner, and the branch runner are interconnected, and the lower end of the branch runner leads into the upper groove.

[0011] Furthermore, the lower part of the inner demolding structure is provided with a middle sleeve plate, and multiple sets of inner ring telescopic cylinders are sleeved inside the middle sleeve plate. The upper end of the inner ring telescopic cylinder is fixed under the inner push plate. The upper end of the punch is provided with an inner support frame, and the upper end of the inner support frame is fixed with an upper cone. The inner push plate and the upper cone are located in the first groove.

[0012] Furthermore, an outer sleeve plate is fixed to the lower part of the outer side of the middle sleeve plate, and multiple sets of outer ring telescopic cylinders are fitted inside the outer sleeve plate. The upper end of the outer ring telescopic cylinder is fixed to the lower part of the outer push plate. The inner side of the outer push plate is in contact with the outer side of the top tube. Multiple sets of middle ring top mold telescopic cylinders are fixed on the upper part of the outer sleeve plate, and the upper end of the middle ring top mold telescopic cylinder rests on the lower end face of the top tube.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. In this utility model, the upper groove between the inner wall of the punch and the outer side of the insert and the outer side of the inner extrusion block can be used as a casting mold groove. After casting, the cooling water pipes in the first and second outer cooling chambers can be used for external cooling, and the cooling water pipes in the first inner cooling chamber can be used for internal cooling. This helps the product to cool faster and more evenly, and improves the demolding efficiency.

[0015] 2. This utility model injects molten raw materials through a pouring port, an upper flow channel, and a branch flow channel, resulting in more uniform and rapid material delivery, which helps to complete the casting of the jacking pipe more quickly and efficiently.

[0016] 3. This utility model utilizes the upward extension of the inner ring telescopic cylinder within the middle sleeve plate to push the inner push plate and its upper cone to remove adhering substances or burrs from the inner side of the top tube. The upper cone accurately fits into the first upper groove, ensuring accurate and reliable positioning. Furthermore, the upward extension of the outer ring telescopic cylinder pushes the outer push plate upward to remove adhering substances or burrs from the outer side of the top tube. Finally, the upward extension of the middle ring top mold telescopic cylinder ejects the top tube, facilitating quick and clean demolding. Attached Figure Description

[0017] Figure 1 This is a cross-sectional schematic diagram of an embodiment of the present utility model;

[0018] Figure 2 This is a schematic diagram of the lower template structure according to an embodiment of the present utility model;

[0019] Figure 3 This is a schematic diagram of the upper template structure according to an embodiment of the present utility model;

[0020] Figure 4 This is a bottom view of the inner demolding structure according to an embodiment of the present invention;

[0021] Figure 5 This is a schematic diagram of the inner demolding structure under the top tube in an embodiment of the present invention.

[0022] In the diagram: 1. Lower mold plate; 10. Lower pad block; 11. Lower heat insulation plate; 12. First lower die; 13. Outer telescopic cylinder; 14. First groove; 2. Inner demolding structure; 20. Middle sleeve plate; 21. Inner ring telescopic cylinder; 22. Outer sleeve plate; 23. Outer ring telescopic cylinder; 24. Outer push plate; 25. Inner push plate; 26. Inner support frame; 27. Upper cone; 28. Middle ring top mold telescopic cylinder; 3. Upper mold plate; 30. Sprue; 31. Upper runner; 32. Upper pad block; 33. Upper heat insulation plate; 34. Upper heating plate; 35. Punch; 36. Inner extrusion block; 37. Outer insert block; 38. First outer cooling cavity; 39. Second outer cooling cavity; 300. Cooling water pipe; 301. Upper groove; 302. First inner cooling cavity; 303. First upper groove; 304. Runner; 4. Top pipe. Detailed Implementation

[0023] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. The specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model. Specific details such as particular system structures and technologies are provided to facilitate a more thorough understanding of the embodiments of this utility model. The described embodiments are some, but not all, of the embodiments disclosed herein. However, those skilled in the art should understand that the present utility model can also be implemented in other embodiments without these specific details. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without inventive effort are within the scope of protection of this disclosure.

[0024] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0025] Figure 1 This is a cross-sectional schematic diagram of an embodiment of the present utility model. Figure 2 This is a schematic diagram of the lower template structure according to an embodiment of the present utility model. Figure 3 This is a schematic diagram of the upper template structure according to an embodiment of the present utility model. Figure 4 This is a bottom view of the inner demolding structure according to an embodiment of the present invention. Figure 5 This is a schematic diagram of the inner demolding structure under the top tube in an embodiment of the present invention.

[0026] Reference Figures 1 to 5As shown, this utility model provides a top tube mold for easy demolding of the inner mold, including a lower template 1, an inner demolding structure 2, and an upper template 3. A lower pad 10 is provided on the upper part of the lower template 1, and a lower heat insulation plate 11 is provided on the upper part of the lower pad 10. The inner demolding structure 2 is installed between the lower pad 10 and the lower heat insulation plate 11, and a first lower concave mold 12 is provided on the upper part of the lower heat insulation plate 11. External telescopic cylinders 1 are fixed on both the left and right sides of the upper end face of the lower template 1. 3. The upper end of the external telescopic cylinder 13 is fixed under the upper template 3. The lower part of the upper template 3 is provided with an upper pad 32, and the lower part of the upper pad 32 is provided with an upper heat insulation plate 33. The lower part of the upper heat insulation plate 33 is provided with an upper heating plate 34, and the middle of the lower end face of the upper heating plate 34 is provided with an inner extrusion block 36. The outer periphery of the inner extrusion block 36 is fitted with a punch 35. An ejector tube 4 is injection molded between the first lower die 12, the inner extrusion block 36 and the punch 35.

[0027] In this embodiment, a first groove 14 is provided in the middle of the first lower die 12, and an outer insert 37 is provided on the lower end face of the punch 35. An upper groove 301 is provided between the inner sidewall of the inner extrusion block 36 and the outer sidewall of the outer insert 37 and the outer sidewall of the inner extrusion block 36, and the top tube 4 is located in the upper groove 301. A first outer cooling cavity 38 is provided in the inner extrusion block 36, and a second outer cooling cavity 39 is provided in the outer insert 37. A first inner cooling cavity 302 is provided in the inner extrusion block 36. A first upper groove 303 is provided at the lower part of the inner extrusion block 36, and multiple sets of cooling water pipes 300 are sleeved in the first outer cooling cavity 38, the second outer cooling cavity 39 and the first inner cooling cavity 302.

[0028] In a preferred embodiment, the upper groove 301 between the inner wall of the punch 35 and the outer insert 37 and the outer side of the inner extrusion block 36 can be used as a casting mold groove. After casting, the cooling water pipes 300 in the first outer cooling cavity 38 and the second outer cooling cavity 39 can be used for external cooling, while the cooling water pipes 300 in the first inner cooling cavity 302 can be used for internal cooling. This helps the product to cool faster and more evenly, and improves the demolding efficiency.

[0029] In this embodiment, the upper mold plate 3 has a pouring gate 30 in its core, and the upper pad block 32 and the upper heat insulation plate 33 have an upper runner 31 in their center. A branch runner 304 is provided between the upper heating plate 34 and the punch 35. The pouring gate 30, the upper runner 31 and the branch runner 304 are connected and communicate with each other. The lower end of the branch runner 304 leads into the upper groove 301.

[0030] As a preferred embodiment, the present invention injects and pours molten raw materials through the pouring port 30, the upper flow channel 31 and the branch channel 304, which makes the material delivery more uniform and faster, and helps the pouring of the jacking pipe 4 to be completed more quickly and efficiently.

[0031] In this embodiment, a middle sleeve plate 20 is provided at the lower part of the inner demolding structure 2. Multiple sets of inner ring telescopic cylinders 21 are fitted inside the middle sleeve plate 20, and the upper end of the inner ring telescopic cylinders 21 is fixed under the inner push plate 25. An inner support frame 26 is provided at the upper end of the punch 35, and an upper cone 27 is fixed at the upper end of the inner support frame 26. The inner push plate 25 and the upper cone 27 are located in the first groove 14. An outer sleeve plate 22 is fixed at the lower part of the outer side of the middle sleeve plate 20, and multiple sets of outer ring telescopic cylinders 23 are fitted inside the outer sleeve plate 22. The upper end of the outer ring telescopic cylinders 23 is fixed under the outer push plate 24. The inner side of the outer push plate 24 is in contact with the outer side of the top tube 4. Multiple sets of middle ring top mold telescopic cylinders 28 are fixed on the upper part of the outer sleeve plate 22, and the upper end of the middle ring top mold telescopic cylinder 28 is pressed against the lower end face of the top tube 4.

[0032] In a preferred embodiment, the present invention utilizes the upward extension of the inner ring telescopic cylinder 21 within the middle sleeve plate 20 to push the inner push plate 25 and its upper cone 27 to remove adhering substances or burrs from the inner side of the top tube 4. The upper cone 27 and the first upper groove 303 are accurately fitted together, ensuring accurate and reliable positioning. Furthermore, the upward extension of the outer ring telescopic cylinder 23 pushes the outer push plate 24 to move upward to remove adhering substances or burrs from the outer side of the top tube 4. Then, the upward extension of the middle ring top mold telescopic cylinder 28 ejects the top tube 4, facilitating a quick and clean demolding process.

[0033] This invention effectively solves the problem in existing technologies where internal demolding processes cannot cleanly remove adhering substances and burrs from the inner and outer surfaces of the molded product, resulting in incomplete and unclean ejection of the top mold, which fails to guarantee the quality of the demolded product and is not efficient or practical. This invention provides stable and accurate positioning of the molded product during manufacturing, rapid and uniform pouring, and facilitates quick and easy cooling and molding of the molded product. During demolding, it can cleanly remove adhering substances and burrs from the inner and outer surfaces of the molded product, making demolding faster, more convenient, and ensuring demolding quality, thus being more efficient and practical.

[0034] The above embodiments are used to explain and illustrate the present utility model, and are not intended to limit the utility model. Any modifications and changes made to the present utility model within the spirit and scope of the claims should be included within the protection scope of the present utility model.

Claims

1. A top tube mold that facilitates demolding of the inner mold, characterized in that: The assembly includes a lower template (1), an inner demolding structure (2), and an upper template (3). A lower pad (10) is provided on the upper part of the lower template (1), and a lower heat insulation plate (11) is provided on the upper part of the lower pad (10). The inner demolding structure (2) is installed between the lower pad (10) and the lower heat insulation plate (11), and a first lower concave mold (12) is provided on the upper part of the lower heat insulation plate (11). External telescopic cylinders (13) are fixed on both the left and right sides of the upper end face of the lower template (1), and the upper end of the external telescopic cylinders (13) is... Fixed under the upper template (3), the lower part of the upper template (3) is provided with an upper pad (32), and the lower part of the upper pad (32) is provided with an upper heat insulation plate (33). The lower part of the upper heat insulation plate (33) is provided with an upper heating plate (34), and the middle part of the lower end face of the upper heating plate (34) is provided with an inner extrusion block (36). The outer periphery of the inner extrusion block (36) is fitted with a punch (35). A top tube (4) is injected between the first lower die (12), the inner extrusion block (36) and the punch (35).

2. The top tube mold for easy demolding of the inner mold according to claim 1, characterized in that, The first lower die (12) has a first groove (14) in the middle, and the lower end face of the punch (35) is provided with an outer insert (37). The inner sidewall of the inner extrusion block (36) and the outer sidewall of the outer insert (37) are separated by an upper insert groove (301), and the top tube (4) is located in the upper insert groove (301).

3. The top tube mold for easy demolding of the inner mold according to claim 1, characterized in that, The inner extrusion block (36) is provided with a first outer cooling chamber (38), and the outer insert block (37) is provided with a second outer cooling chamber (39), and the inner extrusion block (36) is provided with a first inner cooling chamber (302).

4. A top tube mold for easy demolding of the inner mold according to claim 3, characterized in that, The lower part of the inner extrusion block (36) is provided with a first upper groove (303), and multiple sets of cooling water pipes (300) are sleeved in the first outer cooling cavity (38), the second outer cooling cavity (39) and the first inner cooling cavity (302).

5. A top tube mold for easy demolding of the inner mold according to claim 1, characterized in that, The upper template (3) has a pouring gate (30) in its core, and the upper pad (32) and the upper heat insulation plate (33) have an upper runner (31) in their center, and a branch runner (304) is provided between the upper heating plate (34) and the punch (35).

6. A top tube mold for easy demolding of the inner mold according to claim 5, characterized in that, The pouring port (30), the upper runner (31) and the branch runner (304) are connected and connected, and the lower port of the branch runner (304) is connected to the upper groove (301).

7. A top tube mold for easy demolding of the inner mold according to claim 1, characterized in that, The lower part of the inner demolding structure (2) is provided with a middle sleeve plate (20), and multiple sets of inner ring telescopic cylinders (21) are sleeved inside the middle sleeve plate (20). The upper end of the inner ring telescopic cylinder (21) is fixed under the inner push plate (25). The upper end of the punch (35) is provided with an inner support frame (26), and the upper end of the inner support frame (26) is fixed with an upper cone (27). The inner push plate (25) and the upper cone (27) are located in the first groove (14).

8. A top tube mold for easy demolding of the inner mold according to claim 7, characterized in that, The lower part of the outer side of the middle sleeve plate (20) is fixed with an outer sleeve plate (22), and multiple sets of outer ring telescopic cylinders (23) are fitted inside the outer sleeve plate (22). The upper end of the outer ring telescopic cylinder (23) is fixed under the outer push plate (24). The inner side of the outer push plate (24) is in contact with the outer side of the top tube (4). Multiple sets of middle ring top mold telescopic cylinders (28) are fixed on the upper side of the outer sleeve plate (22). The upper end of the middle ring top mold telescopic cylinder (28) is pressed against the lower end face of the top tube (4).

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