Auxiliary shaping mold for plastic corrugated pipe production

Abstract

The utility model relates to the technical field of plastic corrugated pipe production and processing, and discloses an auxiliary shaping mold for plastic corrugated pipe production, which comprises an outer shell, a first mold sealing plate and a second mold sealing plate, and a liquid discharge pipe is additionally arranged on one side of the first mold sealing plate; the circulating hole is integrally designed in a spiral shape, and the two ends of the circulating hole penetrate through the inner wall of the outer shell and extend outwards; and liquid guide holes are formed in the periphery of the inner cavity of the die shaft, one end of each liquid guide hole is communicated with a circulating groove, and the corresponding liquid guide hole is communicated with the liquid discharge pipe. According to the auxiliary shaping mold for plastic corrugated pipe production, cooling liquid is injected into the circulating hole of the outer shell, the liquid guide hole of the mold shaft and the circulating groove and then flows, heat generated by the formed plastic corrugated pipe is absorbed, and the cooling liquid absorbing the heat is discharged through the liquid discharging pipe and the liquid outlet end of the circulating hole; by the adoption of the mode, the efficiency of the corrugated pipe is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic corrugated pipe production and processing, in particular to an auxiliary shaping die for plastic corrugated pipe production. Background Art

[0002] A plastic corrugated pipe is a tubular elastic sensitive element made of plastic, which has foldable corrugated sheets that are connected together along the folding and telescoping direction. Its pipe wall is relatively thin and the sensitivity is relatively high, and it is commonly used to measure various pressures. The open end of the corrugated pipe is fixed, the sealed end is in a free state, and an auxiliary spiral spring or reed is used to increase the elasticity. Under the action of internal pressure, the corrugated pipe will elongate along the length direction of the pipe, causing the movable end to generate a displacement related to the pressure, and then driving the pointer through the movable end to indicate the magnitude of the pressure. An auxiliary shaping die is required for the production and processing of plastic corrugated pipes.

[0003] Common auxiliary shaping dies for plastic corrugated pipe production usually consist of a shaft and connecting parts, a pressure plate and adjustment parts, a sealing part, and an adjustment plate, etc. The plastic material enters the die through the head of the extruder. The pressure plate and adjustment plate of the die play a role in supporting and shaping. As the corrugated pipe gradually takes shape, the pipe drawing machine will draw it out of the die, and the pipe cutting saw will cut it off. This is the structure and usage method of a common auxiliary shaping die for plastic corrugated pipe production. For traditional auxiliary shaping dies for plastic corrugated pipe production, the cooling time is long, resulting in low processing efficiency of the corrugated pipe. For example, in a plastic corrugated pipe forming die with the patent number CN212666604U, a water cooling cavity is opened in the die cavity and cooling water is injected to improve the cooling speed of the corrugated pipe. However, in this way, after the cooling water absorbs a certain amount of heat, the die needs to be replaced by draining and injecting water, which not only makes the water replacement operation complicated, but also reduces the processing efficiency of the corrugated pipe. Therefore, an auxiliary shaping die for plastic corrugated pipe production is proposed. Summary of the Utility Model

[0004] (1) Technical Problems to be Solved

[0005] In view of the deficiencies of the prior art, the utility model provides an auxiliary shaping die for plastic corrugated pipe production to solve the technical problems of complicated water replacement operation and reduced processing efficiency of the corrugated pipe.

[0006] (2) Technical Solutions

[0007] To achieve the above object, the utility model provides the following technical solutions: An auxiliary shaping die for plastic corrugated pipe production, comprising:

[0008] An outer shell, and a first sealing plate and a second sealing plate arranged on both sides of the outer shell, and a liquid discharge pipe is additionally provided on one side of the first sealing plate;

[0009] The circulation holes are arranged in the inner cavity of the outer casing, and the whole of the circulation holes is designed in a spiral shape. Both ends of the circulation holes penetrate through the inner wall of the outer casing and extend outwards.

[0010] The die shaft is arranged at the center of the inner cavity of the outer casing. Liquid guiding holes are formed around the inner cavity of the die shaft. A circulation groove is connected to one end of each liquid guiding hole in a communicating manner. The corresponding liquid guiding holes and the drain pipe are connected in a communicating manner. After injecting coolant into the circulation holes of the outer casing, the liquid guiding holes and the circulation grooves of the die shaft and making it flow, the heat generated by the plastic corrugated pipe being formed is absorbed. And within a certain period of time, the coolant after absorbing heat is discharged through the drain pipe and the liquid outlet end of the circulation holes. On the one hand, the coolant that has absorbed sufficient heat can be discharged in time during production, which is convenient for operation. On the other hand, the injection and discharge of the cooling water can be carried out intermittently, so as to absorb heat more fully and improve the processing efficiency of the corrugated pipe.

[0011] Preferably, a material guiding port is connected to the center of the outer side of the first sealing template, and the inner end of the material guiding port corresponds to the space between the outer casing and the die shaft. Raw materials can be injected between the outer casing and the die shaft through the first sealing template and the material guiding port for shaping.

[0012] Preferably, the liquid guiding holes on the die shaft are designed to be cylindrical as a whole, and there are four groups. The circulation grooves are designed to be semi-circular as a whole, and there are two groups, and they are connected to the corresponding liquid guiding holes in a communicating manner. The four groups of liquid guiding holes are connected through the two groups of circulation grooves. When draining the liquid, the coolant that has absorbed heat is discharged through one group of liquid guiding holes.

[0013] Preferably, a cylindrical plate is installed at the center position on one side of the die shaft. The outer side of the cylindrical plate penetrates through the outer side of the second sealing template and extends outwards. A threaded shaft is rotatably connected to the center position of the outer side of the cylindrical plate. The second sealing template closely fits on the cylindrical plate on one side of the outer casing and the die shaft, and the threaded shaft can rotate on the cylindrical plate.

[0014] Preferably, a rotating handle is coaxially connected to the outer end of the threaded shaft. A sliding block is sleeved at the center of the surface of the threaded shaft. Guide rods are added to the front and back of the threaded shaft and are connected between the cylindrical plates. The guide rods are slidably connected to the sliding block. The rotating handle drives the threaded shaft to rotate, and the sliding block translates along the guide rods according to the rotation direction of the threaded shaft.

[0015] Preferably, reset springs are connected to both the top and bottom center positions of the sliding block, and connecting seats are installed at one ends of the reset springs, and rotating balls are rotatably connected to the corresponding positions of the connecting seats. When the sliding block drives the reset springs, the connecting seats and the rotating balls to move to the outside of the cylindrical plate and continue to move, the rotating balls are pressed downward and move to the outside of the second sealing template. On the one hand, it ensures the stability of the connection between the second sealing template, the outer shell and the mold shaft; on the other hand, compared with the traditional bolt connection method, the second sealing template is convenient to separate from the outer shell and the mold shaft, and can facilitate the traction of the formed corrugated pipe.

[0016] (III) Beneficial effects

[0017] Compared with the prior art, the utility model provides an auxiliary shaping mold for plastic corrugated pipe production, which has the following beneficial effects:

[0018] For the auxiliary shaping mold for plastic corrugated pipe production, after injecting cooling liquid into the circulation holes of the outer shell, the liquid guide holes and the circulation grooves of the mold shaft for flowing, and absorbing the heat generated by the plastic corrugated pipe during shaping, and within a certain period of time, discharging the cooling liquid after absorbing heat through the liquid discharge pipe and the liquid outlet end of the circulation hole. By adopting this method, on the one hand, the cooling liquid after absorbing sufficient heat can be discharged in time during production, which is convenient for operation; on the other hand, the injection and discharge of cooling water can be interrupted, so as to absorb heat more fully and accelerate the processing efficiency of the corrugated pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 is a schematic diagram of the right side view of the overall structure of the utility model;

[0021] Figure 3 is a schematic diagram of the separated structure of the outer shell of the utility model;

[0022] Figure 4 is a schematic diagram of the separated structure of the mold shaft of the utility model;

[0023] Figure 5 is a schematic diagram of the threaded shaft and its connection structure of the utility model.

[0024] In the figure: 1. Outer shell; 2. First sealing template; 3. Material guiding port; 4. Liquid discharge pipe; 5. Second sealing template; 6. Circulation hole; 7. Mold shaft; 8. Liquid guide hole; 9. Circulation groove; 10. Cylindrical plate; 11. Threaded shaft; 12. Rotating handle; 13. Reset spring; 14. Connecting seat; 15. Rotating ball; 16. Guide rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts belong to the scope of protection of the present invention.

[0026] The present invention provides a technical solution, an auxiliary shaping mold for plastic corrugated pipe production, including: Please refer to Figure 1 , Figure 2 , an outer shell 1, and a first sealing template 2 and a second sealing template 5 arranged on both sides of the outer shell 1, and a drain pipe 4 is additionally provided on one side of the first sealing template 2;

[0027] Please refer to Figure 3 , a circulation hole 6, arranged in the inner cavity of the outer shell 1, and the whole of the circulation hole 6 is designed in a spiral shape, and both ends of the circulation hole 6 penetrate through the inner wall of the outer shell 1 and extend outwards;

[0028] Please refer to Figure 4 , a mold shaft 7, arranged at the center of the inner cavity of the outer shell 1, and liquid guide holes 8 are opened around the inner cavity of the mold shaft 7, and a circulation groove 9 is connected to one end of the liquid guide hole 8, and the corresponding liquid guide hole 8 is connected to the drain pipe 4. By injecting a coolant into the circulation hole 6 of the outer shell 1, the liquid guide holes 8 and the circulation groove 9 of the mold shaft 7 and making it flow, the heat generated by the plastic corrugated pipe during molding is absorbed, and within a certain period of time, the coolant after absorbing heat is discharged through the drain pipe 4 and the liquid outlet end of the circulation hole 6. On the one hand, the coolant that has absorbed sufficient heat can be discharged in time during production, which is convenient for operation; on the other hand, the injection and discharge of cooling water can be carried out intermittently, so as to absorb heat more fully and accelerate the processing efficiency of the corrugated pipe.

[0029] Please refer to Figure 1 , the center of the outer side of the first sealing template 2 is connected to a material guiding port 3, and the inner end of the material guiding port 3 corresponds to the space between the outer shell 1 and the mold shaft 7. Raw materials can be injected between the outer shell 1 and the mold shaft 7 through the first sealing template 2 and the material guiding port 3 for shaping.

[0030] Please refer to Figure 4 , the liquid guide holes 8 on the mold shaft 7 are designed as a whole in a cylindrical shape and there are four groups, and the circulation grooves 9 are designed as a whole in a semi-circular shape and there are two groups, and are connected to the corresponding liquid guide holes 8. The four groups of liquid guide holes 8 are connected through the two groups of circulation grooves 9, and when draining, the coolant that has absorbed heat is discharged through one group of liquid guide holes 8.

[0031] Please refer to Figure 5, a cylindrical plate 10 is installed at the central position on one side of the die shaft 7, and the outer side of the cylindrical plate 10 penetrates through the outer side of the second sealing template 5 and extends outward. A threaded shaft 11 is rotatably connected to the central position on the outer side of the cylindrical plate 10. The second sealing template 5 is closely attached to the outer shell 1 and one side of the die shaft 7 on the cylindrical plate 10, while the threaded shaft 11 can rotate on the cylindrical plate 10. The outer end of the threaded shaft 11 is coaxially connected with a rotating handle 12, and a sliding block is sleeved at the central position on the surface of the threaded shaft 11. Guide rods 16 are added to the front and back of the threaded shaft 11 and are connected between the cylindrical plates 10, and the guide rods 16 are slidably connected with the sliding block. The rotating handle 12 drives the threaded shaft 11 to rotate, and the sliding block translates along the guide rod 16 according to the rotation direction of the threaded shaft 11. A return spring 13 is connected to the central positions at the top and bottom of the sliding block, and a connecting seat 14 is installed at one end of each return spring 13, and a rotating ball 15 is rotatably connected to the corresponding position of the connecting seat 14. When the sliding block drives the return spring 13, the connecting seat 14 and the rotating ball 15 to move to the outside of the cylindrical plate 10 and continue to move, the rotating ball 15 presses downward and moves to the outside of the second sealing template 5. On the one hand, the stability of the connection between the second sealing template 5 and the outer shell 1 and the die shaft 7 is ensured; on the other hand, compared with the traditional method of using bolts for connection, the second sealing template 5 is convenient for separation from the outer shell 1 and the die shaft 7, and the formed corrugated pipe can be conveniently pulled.

[0032] In this solution: After injecting coolant into the circulation hole 6 of the outer shell 1, the liquid guide hole 8 and the circulation groove 9 of the die shaft 7, the coolant flows, absorbs the heat generated by the plastic corrugated pipe during forming, and within a certain period of time, the coolant after absorbing heat is discharged through the drain pipe 4 and the liquid outlet end of the circulation hole 6. Raw materials can be injected between the outer shell 1 and the die shaft 7 through the first sealing template 2 and the material guide port 3 for shaping. The rotating handle 12 drives the threaded shaft 11 to rotate, and the sliding block translates along the guide rod 16 according to the rotation direction of the threaded shaft 11. When the sliding block drives the return spring 13, the connecting seat 14 and the rotating ball 15 to move to the outside of the cylindrical plate 10 and continue to move, the rotating ball 15 presses downward and moves to the outside of the second sealing template 5.

[0033] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to this process, method, article or device.

[0034] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. An auxiliary shaping die for the production of plastic corrugated pipes, characterized in that: include: An outer shell (1), and a first sealing plate (2) and a second sealing plate (5) arranged on both sides of the outer shell (1), and a liquid discharge pipe (4) is additionally provided on one side of the first sealing plate (2); A circulation hole (6) is arranged in the inner cavity of the outer shell (1), and the circulation hole (6) is designed as a whole in a spiral shape, and both ends of the circulation hole (6) penetrate the inner wall of the outer shell (1) and extend outward; The mold shaft (7) is arranged at the center of the inner cavity of the outer shell (1), and the inner cavity of the mold shaft (7) is provided with liquid guide holes (8) all around, and a circulation groove (9) is connected to one end of the liquid guide hole (8), and the corresponding liquid guide hole (8) is connected to the liquid discharge pipe (4).

2. The auxiliary shaping mold for producing plastic corrugated pipes according to claim 1, characterized in that: The center of the outer side of the first sealing plate (2) is connected to a material guide port (3), and the inner end of the material guide port (3) corresponds to the outer shell (1) and the mold shaft (7).

3. The auxiliary shaping mold for producing plastic corrugated pipes according to claim 1, characterized in that: The liquid guide holes (8) on the mold shaft (7) are designed as a whole in a cylindrical shape and are in four groups. The circulation grooves (9) are designed as a whole in a semicircular shape and are in two groups, and are in communication with the corresponding liquid guide holes (8).

4. The auxiliary shaping mold for producing plastic corrugated pipes according to claim 1, characterized in that: A cylindrical plate (10) is installed at the center position of one side of the mold shaft (7), and the outer side of the cylindrical plate (10) passes through the outer side of the second sealing plate (5) and extends outward, and a threaded shaft (11) is rotatably connected at the center position of the outer side of the cylindrical plate (10).

5. The auxiliary shaping mold for producing plastic corrugated pipes according to claim 4, characterized in that: The outer end of the threaded shaft (11) is coaxially connected to a rotating handle (12), and a sliding block is sleeved at the center of the surface of the threaded shaft (11). Guide rods (16) are added to the front and back sides of the threaded shaft (11) and are connected between the cylindrical plates (10), and the guide rods (16) are slidably connected to the sliding block.

6. The auxiliary shaping mold for producing plastic corrugated pipes according to claim 5, characterized in that: The top and bottom center positions of the sliding block are both connected with a return spring (13), and one end of the return spring (13) is installed with a connecting seat (14), and a rotating ball (15) is rotatably connected to the corresponding position of the connecting seat (14).

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