A vacuum shaping equipment for polybutene pipe manufacturing

Abstract

The present application relates to the technical field related to plastic shaping, and discloses a vacuum shaping device for manufacturing polybutene pipes. In order to solve the problem that the pipe fittings are first hardened by the influence of the cooling medium, a cooling turntable is arranged in the shaping disk. Only when the pipe fittings are close to the inner side of the shaping disk and move forward, the cooling turntable will rotate due to the movement of the pipe fittings. The water storage tank will transport the cooling medium in the water pipe to the outside of the pipe fittings as the cooling turntable rotates, and the pipe fittings will be cooled according to the cooling medium, thereby accelerating the cooling and hardening of the pipe fittings after shaping, and finally achieving the effect of shaping first and then cooling.

Description

Technical Field

[0001] The present application relates to the technical field related to plastic shaping, and in particular to a vacuum shaping device for manufacturing polybutylene pipes. Background Art

[0002] Polybutylene pipe is a piping system used to transport liquids or gases. It has good heat resistance, chemical corrosion resistance and mechanical strength, making it very suitable for manufacturing pipes.

[0003] When manufacturing pipe fittings, vacuum forming equipment is required to ensure the material forming. The working principle of the current vacuum forming equipment is as follows: the pipe fittings are conveyed to the forming box after being formed by extrusion, and the forming box on the outside of the pipe fittings is evacuated, so that the pipe is pressurized and close to the inner side of the sizing sleeve. At the same time, cooling water is sprayed on the outside of the pipe to achieve the shaping of the pipe fitting under rapid cooling. However, in actual use, since the cooling water is continuously sprayed outward through the nozzle, the pipe fittings will be cooled by the cooling water before reaching the sizing sleeve under vacuum pressure. When the pipe fittings cool down, the ductility will be reduced, making it difficult for the pipe fittings to approach the sizing pipe, and ultimately causing the pipe diameter to fail to meet manufacturing requirements. Summary of the Invention

[0004] The present application proposes a vacuum shaping device for manufacturing polybutene pipes, which has the advantages of shaping first and then cooling, and is used to solve the problem of pipes being hardened first due to the influence of cooling medium proposed in the above background technology.

[0005] In order to achieve the above-mentioned purpose, the present application adopts the following technical solutions: a vacuum shaping device for manufacturing polybutene pipes, comprising: a shaping box, which has a shaping cavity inside, and a pipe is inserted into one end of the shaping box, and the pipe passes through the shaping cavity and then exits from the other end of the shaping box; an air pump installed on the shaping box to extract the airflow in the shaping cavity to form a negative pressure vacuum; a water pump installed on the shaping box to extract the cooling medium at the bottom of the shaping cavity; a shaping plate fixedly installed on the inner side of the shaping box and located on the pipe The outer side of the shaping disks, and the shaping disks are connected via a connecting mesh ring; the cooling turntable is movably installed on the inner side of the shaping box, and when the pipe moves axially, the cooling turntable rotates; the water storage tank is opened on the outer side of the cooling turntable, and the cooling medium in the water storage tank is transported to the outer side of the pipe when the cooling turntable rotates; the water pipe is fixed on the inner side of the shaping disk, and the top end of the water pipe extends to the top of the shaping box, and a water tank connected to the water pipe is fixed on the top of the shaping box, and the water tank is filled with cooling medium.

[0006] Furthermore, the connecting mesh ring is in the shape of a cylindrical tube with a through middle portion, and a water-permeable hole is provided on the outer side of the cylindrical tube.

[0007] Furthermore, there are multiple shaping disks, and the multiple shaping disks are arranged at equal distances.

[0008] Furthermore, the waist of the cooling swivel is in an arc shape, the center point of the arc coincides with the center point of the pipe, and an anti-slip frame located in the water tank is fixedly installed on the outer side of the cooling swivel.

[0009] Furthermore, the shaping plate includes four cooling turntables, and the waists of the four cooling turntables surround the outer side of the pipe.

[0010] Furthermore, an air-filling plug seat located on one side of the cooling turntable is movably installed on the inner side of the shaping disk, and the end of the air-filling plug seat is pressed against the outer side of the cooling turntable by the elastic force of the top spring, and the center line of the water pipe points to the center line of the cooling turntable.

[0011] Furthermore, an air guide cavity located on one side of the cooling turntable is opened on the inner side of the shaping plate, and an air supply pipe connected to the air guide cavity is fixedly installed on the bottom of the shaping box. The end of the air supply plug seat is located in the air guide cavity, and the air supply plug seat realizes the communication between the air guide cavity and the water storage tank. An atomization tank connected to the water storage tank is opened on one side of the shaping plate.

[0012] Furthermore, arc angles are provided on both sides of the interior of the water storage tank, and when the air supply plug seat is pressed against the arc angles, the air guide cavity is communicated with the water storage tank.

[0013] Furthermore, the cross-sectional shape of the air replenishing plug seat is set to be L-shaped.

[0014] The present invention has the following beneficial effects:

[0015] The present application provides a vacuum forming equipment for the manufacture of polybutene pipes. A cooling turntable is arranged in the forming disk. Only when the pipe fitting is close to the inner side of the forming disk and moves forward, the cooling turntable will rotate due to the movement of the pipe fitting. The water storage tank will transport the cooling medium in the water pipe to the outside of the pipe fitting as the cooling turntable rotates, and the pipe fitting will be cooled according to the cooling medium, thereby accelerating the cooling and hardening of the pipe fitting after forming, and finally achieving the effect of forming first and then cooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments disclosed herein and, together with the description, serve to explain the principles disclosed herein.

[0017] The present application can be more clearly understood from the following detailed description with reference to the accompanying drawings, in which:

[0018] Figure 1 It is a three-dimensional diagram of the overall appearance;

[0019] Figure 2 This is the overall interior three-dimensional layout diagram;

[0020] Figure 3 It is the overall front sectional view;

[0021] Figure 4 This is a partial cross-sectional structural diagram of the shaping disc;

[0022] Figure 5 for Figure 4 The structure diagram at AA in the middle is enlarged;

[0023] Figure 6 This is a diagram of the cooling transposition structure.

[0024] In the figure: 1. Forming box; 100. Forming cavity; 2. Water pump; 3. Air pump; 4. Water tank; 5. Pipe fittings; 6. Forming plate; 600. Air guide cavity; 601. Connecting mesh ring; 602. Atomizing tank; 7. Air supply pipe; 8. Water pipe; 9. Cooling swivel seat; 900. Water storage tank; 901. Anti-slip rack; 10. Top spring; 11. Air supply plug seat. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0026] Example 1

[0027] See also Figure 1 and Figure 2 The shaping box 1 is used as the main body of vacuum shaping. During use, the pipe 5 passes through one end of the shaping box 1, passes through the shaping cavity 100 opened inside the shaping box 1, and then passes through the other end of the shaping box 1, so that the outside of the pipe 5 is exposed in the shaping cavity 100. The outside of the shaping box 1 is fixed with an air pump 3 that extracts the air flow in the shaping cavity 100 to the outside, so that the shaping cavity 100 maintains a negative pressure vacuum. The outside of the shaping box 1 is fixed with a water pump 2 located below the air pump 3. The water pump 2 can extract the cooling medium accumulated at the bottom of the shaping cavity 100 outwards. Figure 3 It can be seen that a shaping plate 6 located on the outside of the pipe fitting 5 is fixedly installed on the inner side of the shaping box 1, and the shaping plates 6 are connected by a connecting mesh ring 601. The connecting mesh ring 601 is in the shape of a cylindrical tube with a through middle, and a water-permeable hole is provided on the outside of the cylindrical tube. When the pressure in the shaping cavity 100 is reduced, the outer side of the pipe fitting 5 will be forced to move closer to the inner side of the connecting mesh ring 601, thereby limiting the outer diameter of the pipe fitting 5 through the connecting mesh ring 601 to ensure that the output pipe fitting 5 is of the size required for manufacturing.

[0028] Combine Figure 3 It can be seen that there are multiple shaping discs 6, preferably 4-6. The accompanying drawings of this application take 5 as an example. The multiple shaping discs 6 are arranged equidistantly. Figure 4 and 6 It can be seen that a cooling turntable 9 is movably installed on the inner side of the shaping disk 6. The waist of the cooling turntable 9 is arc-shaped, and the center point of the arc coincides with the center point of the pipe 5. Therefore, when the pipe 5 moves axially, the cooling turntable 9 will rotate. A water storage tank 900 is opened on the outside of the cooling turntable 9, and the two ends of the water storage tank 900 are respectively located at the two ends of the cooling turntable 9, and an anti-slip frame 901 located in the water storage tank 900 is fixedly installed on the outside of the cooling turntable 9. The anti-slip frame 901 is consistent with the arc shape of the waist of the cooling turntable 9, which prevents the cooling turntable 9 from not rotating with the pipe 5 due to the existence of the water storage tank 900 during the fitting process with the pipe 5.

[0029] A water pipe 8 is fixedly installed on the inner side of the shaping plate 6, and the top of the water pipe 8 extends to the top of the shaping box 1. A water tank 4 connected to the water pipe 8 is fixedly installed on the top of the shaping box 1, and the water tank 4 is filled with a sufficient amount of cooling medium, which is preferably water.

[0030] In the present application, one shaping plate 6 includes four cooling rotats 9 , so that the outer side of the tube 5 is surrounded by the waists of the four cooling rotats 9 , thereby comprehensively cooling the outer side of the tube 5 .

[0031] During use, the pipe fitting 5 is input from one end of the shaping box 1 and output from the other end of the pipe fitting 5 after passing through the shaping disk 6 and the inside of the connecting mesh ring 601. At the same time, the vacuum pump 3 will output the airflow in the shaping cavity 100 to the outside, thereby reducing the pressure in the shaping cavity 100.

[0032] The pipe fitting 5 will be pressed outward against the inner side of the forming plate 6 due to the pressure drop in the forming cavity 100. When the pipe fitting 5 moves axially, the pipe fitting 5 will drive the cooling turntable 9 to rotate. As the cooling turntable 9 rotates, the cooling medium in the water tank 900 will be transported to the outside of the pipe fitting 5, thereby cooling the outside of the pipe fitting 5 with water.

[0033] In the present application, the pipe 5 can only rotate and subsequently dissipate heat by water when it is close to the cooling swivel seat 9, thereby preventing the pipe 5 from being cooled by water first.

[0034] Example 2

[0035] Further improvements are made based on Example 1. Figure 4 and Figure 5When the air flow in the molding cavity 100 is output from the vacuum pump 3, the cooling turntable 9 is not provided with a limiting mechanism, so that the cooling turntable 9 rotates accordingly, forcing the cooling medium in the water pipe 8 to continuously flow outward. In order to prevent such problems from occurring, an air replenishing plug seat 11 is movably installed on the inner side of the molding disk 6 and is located on one side of the cooling turntable 9. The end of the air replenishing plug seat 11 is pressed against the outer side of the cooling turntable 9 by the elastic force of the top spring 10. Therefore, in actual use, the center line of the water pipe 8 is pointed to the center line of the cooling turntable 9. After the air replenishing plug seat 11 is pressed against the water storage tank 900, it not only prevents the cooling turntable 9 from rotating, but also resets the cooling turntable 9. Figure 5 It can be seen that the two sides of the bottom of the cooling turntable 9 are arranged symmetrically, so that the suction forces on both sides of the bottom of the cooling turntable 9 are relatively balanced, reducing the strength of the limit of the air supply plug seat 11, that is, when the cooling turntable 9 is maintained in balance by a smaller force, the cooling turntable 9 can be prevented from continuously rotating, thereby allowing the cooling medium in the water pipe 8 to be transported outward.

[0036] Example 3

[0037] Further improvements are made based on Example 2. Figure 5 In order to enable the cooling medium in the water storage tank 900 to efficiently cool the pipe 5, an air guide cavity 600 is opened on the inner side of the shaping plate 6 and is located on one side of the cooling turntable 9, and an air supply pipe 7 connected to the air guide cavity 600 is fixedly installed at the bottom of the shaping box 1, so that the air guide cavity 600 is connected to the external air. At the same time, the end of the air supply plug seat 11 is located in the air guide cavity 600. When the cooling turntable 9 rotates, the air supply plug seat 11 is pushed to compress the top spring 10, and after the air supply plug seat 11 continues to move to the left, the air guide cavity 600 and the water storage tank 900 are connected, thereby replenishing the air flow into the shaping cavity 100 through the air guide cavity 600.

[0038] Combine Figure 5 It can be seen that an atomizing groove 602 communicating with the water storage tank 900 is opened on one side of the shaping plate 6. The atomizing groove 602 is a thin semicircular hole, and the atomizing groove 602 is located below the air replenishing plug seat 11, so that the cooling medium in the water storage tank 900 can be output to the outside.

[0039] During use, the cooling medium in the water tank 900 is transported to the outside of the pipe 5 by rotating the cooling seat 9. At this time, the water tank 900 located on the outside of the pipe 5 is connected to the molding cavity 100 only through the atomization groove 602. Even if the pressure in the molding cavity 100 is reduced, the cooling medium in the water tank 900 is not easily output from the atomization groove 602.

[0040] As the cooling swivel 9 rotates clockwise, the direction reference Figure 5The water storage tank 900 located on the outside of the pipe 5 will be gradually inserted by the air supply plug seat 11. Since arc angles are provided on both sides of the interior of the water storage tank 900, when the air supply plug seat 11 is pressed against the arc angle, the air guide cavity 600 is connected with the water storage tank 900. At this time, the pressure in the molding cavity 100 is small, and the pressure in the water storage tank 900 is the same as the external air pressure through the air guide cavity 600, causing the external air flow to push the cooling medium to be ejected from the atomizing groove 602 through the water storage tank 900. When the cooling medium is ejected from a relatively high-pressure environment to a low-pressure environment, the atomizing groove 602 will be sprayed on the outside of the pipe 5 in a mist form, further cooling the outside of the pipe 5.

[0041] During actual use, the outer side of the cooling turntable 9 needs to form a seal with the inner side of the shaping disk 6 to prevent the cooling medium in the water pipe 8 from directly communicating with the shaping cavity 100. After the cooling turntable 9 is worn, outsiders cannot quickly know whether the cooling turntable 9 is well sealed. In order to enable outsiders to quickly know whether the cooling turntable 9 is well sealed, the cross-sectional shape of the air replenishing plug seat 11 is set to L-shaped. Therefore, during actual use, after all the cooling medium in the water storage tank 900 is output from the atomizing tank 602, as the cooling turntable 9 rotates, the water storage tank 900 where the cooling medium has been output will continue to rotate upward. At this time, the water storage tank 900 passes the atomizing tank 602, but the cooling turntable 9 is not connected to the water pipe 8 at this time. As the cooling turntable 9 rotates, the air replenishing plug seat 11 will be subjected to the elastic force of the top spring 10 and gradually move to the bottom of the water storage tank 900. Figure 5 As shown, when the air supply plug seat 11 moves to the right, the air flow will be squeezed into the water storage tank 900 by the air supply plug seat 11. If the outer side of the cooling turntable 9 and the inner side of the shaping plate 6 are well sealed at this time, the air flow pressure in the water storage tank 900 will increase, thereby preventing the air supply plug seat 11 from moving; similarly, if the seal between the cooling turntable 9 and the inner side of the shaping plate 6 is worn, Figure 5 It can be seen that the waist of the cooling turntable 9 is between the air supply plug seat 11 and the water pipe 8. When a gap appears between the two, the air flow will be transported from the gap to the water pipe 8. Due to the water medium filled in the water pipe 8, the air flow will continue to rise until it emerges from the water tank 4. External personnel only need to check whether there are bubbles in the water tank 4 to know whether the cooling turntable 9 is well sealed. In addition, each cooling turntable 9 is connected to a water pipe 8, so based on the water pipe 8, it can be determined which cooling turntable 9 has a sealing problem, thereby speeding up the inspection and maintenance of the equipment.

Claims

1. A vacuum shaping equipment for manufacturing polybutene pipes, characterized in that: include: The shaping box has a shaping cavity inside, and a pipe is inserted into one end of the shaping box, and the pipe passes through the shaping cavity and out of the other end of the shaping box; The vacuum pump is installed on the molding box to extract the air flow in the molding cavity to form a negative pressure vacuum; The water pump is installed on the shaping box and is used to extract the cooling medium from the bottom of the shaping cavity; The shaping disc is fixedly installed on the inner side of the shaping box and located on the outer side of the pipe fitting, and the shaping discs are connected via a connecting mesh ring; The cooling swivel is movably mounted on the inner side of the shaping box, and when the pipe moves axially, the cooling swivel rotates; The water storage tank is provided on the outside of the cooling turntable, and the cooling medium in the water storage tank is transported to the outside of the pipe when the cooling turntable rotates; A water pipe is fixed on the inner side of the shaping plate, and the top end of the water pipe extends to the top of the shaping box. A water tank connected to the water pipe is fixed on the top of the shaping box, and the water tank is filled with cooling medium; An air supply plug seat is movably mounted on the inner side of the shaping plate and is located on one side of the cooling rotatable seat. The end of the air supply plug seat is pressed against the outer side of the cooling rotatable seat by the elastic force of the top spring. The center line of the water supply pipe points to the center line of the cooling rotatable seat. An air guide cavity is provided on the inner side of the shaping plate and is located on one side of the cooling rotary seat. An air supply pipe communicating with the air guide cavity is fixedly installed on the bottom of the shaping box. The end of the air supply plug seat is located in the air guide cavity. The air supply plug seat enables the air guide cavity and the water storage tank to communicate. An atomization tank communicating with the water storage tank is provided on one side of the shaping plate. Arc angles are provided on both sides of the interior of the water storage tank, and when the air supply plug seat is pressed against the arc angles, the air guide cavity is communicated with the water storage tank; The cross-sectional shape of the air replenishing plug seat is set to be L-shaped.

2. The vacuum setting equipment for manufacturing polybutene pipes according to claim 1, characterized in that: The connecting net ring is in the shape of a cylindrical tube with a through middle portion, and a water-permeable hole is provided on the outer side of the cylindrical tube.

3. The vacuum setting equipment for manufacturing polybutene pipes according to claim 1, characterized in that: There are multiple shaping discs, and the multiple shaping discs are arranged at equal distances.

4. The vacuum setting equipment for manufacturing polybutene pipes according to claim 1, characterized in that: The waist of the cooling swivel seat is in an arc shape, the center point of the arc coincides with the center point of the pipe fitting, and an anti-slip frame located in the water storage tank is fixedly installed on the outer side of the cooling swivel seat.

5. The vacuum setting equipment for manufacturing polybutene pipes according to claim 1, characterized in that: The shaping plate includes four cooling turntables, and the waists of the four cooling turntables surround the outer side of the pipe.

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