Throttling socket type pipeline injection molding process and injection molding equipment

Abstract

According to the throttling socket type pipeline injection molding technology and the injection molding equipment, plastic particles are poured into a feeding hopper of the injection molding equipment, so that the plastic particles enter a plastic extruding machine, the plastic extruding machine is used for melting and extruding the plastic particles, and the molten plastic particles are conveyed into a forming device through a feeding pipe; according to the forming device, a motor is used for driving a gear, the gear drives a plurality of sets of first side molds and second side molds to rotate through a chain structure, the first side molds and the second side molds complete mold closing and mold splitting operation in the rotating process, and molten plastic particles are shaped into socket pipe bodies in the first side molds and the second side molds; the formed socket pipe body is output from the end part of the former; when the injection molding equipment for the throttling socket type pipeline is used, the injection molding equipment is matched with a first mold and a second mold for use, so that the injection molding equipment has a double-pipe type circulating discharging orientation structure, the shaping operation of the two throttling socket type pipelines can be completed at the same time, and the working efficiency of the injection molding equipment is improved.

Description

Technical Field

[0001] The invention belongs to the field of injection molding technology, and more specifically relates to a throttling socket-type pipe injection molding process and injection molding equipment. Background Art

[0002] The throttling socket pipe is a connector that can control the flow when the pipeline is running. It achieves the purpose of throttling by reducing or increasing the flow of the pipeline, thereby adjusting the flow and speed of the fluid in the pipeline. It is mainly processed by injection molding.

[0003] The application document with application number CN109454806A discloses a pipeline injection molding device and a processing and preparation method, including a horizontal plate, a support column fixedly installed at the bottom of the horizontal plate, a support plate arranged below the horizontal plate, a slide groove provided inside the support plate, a limit plate movably sleeved inside the slide groove, the bottom end of the support column passes through the support plate and extends to the inside of the slide groove, the bottom end of the support column is fixedly connected to the top of the limit plate, and the outer surface of the support column is movably sleeved with the support plate. The pipeline injection molding device and processing and preparation method, through the cooperation between the fixed frame, the limit block, the drive motor, the drive gear and the passive gear, because the two threaded rods are respectively located on the left and right sides of the upper module, the upper module is driven to move up and down through the horizontal column, and then the position of the upper module is limited.

[0004] The above-mentioned equipment has certain shortcomings when performing processing operations on throttling socket-type pipes. The above-mentioned device adopts a single-tube extrusion structure design, so that during the extrusion processing operation of the throttling socket-type pipe, only a single throttling socket-type pipe can be extruded at a time, and double-tube extrusion cannot be completed at the same time, thereby reducing its work efficiency; secondly, when performing the extrusion processing operation of the double-tube throttling socket-type pipe, the traditional equipment cannot cool the double throttling socket-type pipes, because the size and position between the single pipe and the double pipe are different, and the traditional cooling method cannot make the double throttling socket-type pipes cool evenly during extrusion, thereby reducing the effect of the double-tube extrusion operation of the throttling socket-type pipe; at the same time, when performing the extrusion processing operation of the double-tube throttling socket-type pipe, during the pipeline transportation process, due to the influence of the pipeline's own weight, one end of the pipeline will bend downward, thereby causing the two throttling socket-type pipes to bend and deform, thereby reducing their processing quality. Summary of the invention

[0005] The purpose of the present invention is to provide a throttling socket-type pipe injection molding process and injection molding equipment, which can solve the existing problems.

[0006] The problem to be solved by the present invention is:

[0007] 1. The above device adopts a single-tube extrusion structure design, so that during the extrusion operation of the throttling socket-and-spigot pipe, only a single throttling socket-and-spigot pipe can be extruded at a time, and double-tube extrusion cannot be completed at the same time, which reduces its working efficiency;

[0008] 2. Secondly, when performing the extrusion processing of double-tube throttling socket-and-spigot pipes, traditional equipment cannot cool the double-tube throttling socket-and-spigot pipes, because the size and position between the single pipe and the double pipe are different. The traditional cooling method cannot make the double-tube throttling socket-and-spigot pipes cool down evenly during extrusion, thereby reducing the effect of the double-tube extrusion operation of the throttling socket-and-spigot pipes;

[0009] 3. At the same time, when the double-tube throttling socket-and-spigot pipe is extruded, one end of the pipe will bend downward due to the weight of the pipe itself during the pipe transportation process, causing both throttling socket-and-spigot pipes to bend and deform, reducing their processing quality.

[0010] The purpose of the present invention can be achieved through the following technical solutions:

[0011] The throttling socket pipe injection molding process includes the following steps:

[0012] Step 1: pour the plastic pellets into the feed hopper of the injection molding equipment, so that the plastic pellets enter the extruder, melt and extrude the plastic pellets by the extruder, and transport the melted plastic pellets to the inside of the molding device through the feed pipe;

[0013] Step 2: The former drives the gears with a motor, and the gears drive the first side molds and the second side molds to rotate with a chain structure, so that the first side molds and the second side molds complete the mold closing and mold separation operations during the rotation process, so that the melted plastic particles are formed into the socket pipe body in the first side molds and the second side molds;

[0014] Step three, the formed bell-and-spigot pipe body is output from the end of the former, and the surface of the bell-and-spigot pipe body is sprayed and cooled by a cooling plate and a nozzle to shape the cold zone of the bell-and-spigot pipe body, and then the bell-and-spigot pipe body is transported and discharged by a support frame.

[0015] A throttling socket-and-spigot pipe injection molding device comprises a fixed base and a former, wherein the former is fixedly mounted at the middle position of the upper end of the fixed base, an extruder is fixedly mounted on the upper end of the fixed base located at one end of the former, and a cooling plate is fixedly mounted on the upper end of the fixed base located at the other end of the former, a plurality of groups of first side molds are movably mounted on one side of the former, and a plurality of groups of second side molds are movably mounted on the other side of the former, a circulating water tank is fixedly mounted below the cooling plate, the cooling plate and the circulating water tank are connected by a drainage pipe, and the mold closing and mold separation operations can be completed by rotating the first side mold and the second side mold, so that the plastic material can continuously complete the shaping operation of the socket-and-spigot pipe during the extrusion process.

[0016] As a further technical solution of the present invention, several groups of first side molds and several groups of second side molds are movably connected by chains, gears for cooperating with the chains are provided inside the former, a feed pipe is provided at the middle position of one end of the former, and limit clamps are provided on the surfaces of the first side mold and the second side mold. The gears are driven by a motor, and the chains are driven to operate through the gears. When the chains are operating, several groups of first side molds and several groups of second side molds are in a rotating state, and the first side mold and the second side mold are tangent to each other, that is, the molds are closed, and the socket pipe body is continuously extruded and formed by continuous rotation of the first side mold and the second side mold.

[0017] As a further technical solution of the present invention, the first side mold and the second side mold are spliced ​​and installed with the first mold and the second mold on their inner sides, and the first mold is spliced ​​and installed on the outer surface of one side of the second mold. The first mold and the second mold can be used flexibly by using the first mold and the second mold, so that the extrusion operation of two small-diameter socket pipe bodies can be completed in the first side mold and the second side mold at one time. At the same time, the user can replace the first mold and the second mold with a set of conventional molds, so that a large-diameter socket pipe body can be extruded between the first side mold and the second side mold.

[0018] As a further technical solution of the present invention, the inner sides of the first side mold and the second side mold are provided with docking slots, the outer surfaces of the first mold and the second mold are provided with splicing strips used in conjunction with the docking slots, and the surfaces of the first side mold and the second side mold are provided with docking buckles used in conjunction with chains. The splicing operation between the first side mold and the second side mold and the first mold and the second mold can be completed by utilizing the docking slots in conjunction with the splicing strips.

[0019] As a further technical solution of the present invention, two groups of spray racks are arranged in the middle of the upper end of the cooling plate, and a plurality of groups of spray nozzles are fixedly installed on the inner side of the spray racks. The spray racks and the cooling plate are connected and fixed by a fixed rack. By utilizing the plurality of groups of spray nozzles of the two groups of spray racks, the surface of the socket pipe body can be cooled during the extrusion operation of the socket pipe body, so that the socket pipe body can be quickly cooled and shaped.

[0020] As a further technical solution of the present invention, a water inlet pipe is arranged between the spray rack and the circulating water tank, and a plurality of groups of cooling pipes are fixedly installed inside the circulating water tank. A compressor is arranged at the bottom of the circulating water tank, and the circulating water tank uses the compressor to cool down the cooling pipes through a refrigerant. When the nozzle of the spray rack sprays water, the water is collected by a cooling plate, and the water is introduced into the interior of the circulating water tank through a drain pipe. The used water is cooled by the cooling pipe to reduce the temperature of the water, and then the water is re-delivered to the spray rack through the water inlet pipe by a pump, thereby completing the recycling of the water.

[0021] As a further technical solution of the present invention, the two groups of spray racks are movably connected by a telescopic sleeve, the fixed frame and the spray rack are driven by a transverse push rod, and a pump body is provided at one end of the water inlet pipe. Because the first side mold and the second side mold adopt a splicing structure design, a single-tube or double-tube extrusion structure can be performed, and the two groups of spray racks use the telescopic sleeve to form a telescopic adjustment structure, so that the two groups of spray racks can be adjusted arbitrarily according to the diameter of the pipeline. During operation, the spray rack is driven to move by the transverse push rod to adjust the nozzle distance between the two groups of spray racks.

[0022] As a further technical solution of the present invention, a support frame is provided at one end of the fixed base, and the support frame includes a lower support seat and an upper support seat. The upper support seat is movably installed above the lower support seat, and roller rods are movably installed on the upper surfaces of the lower support seat and the upper support seat. The roller rods of the lower support seat and the upper support seat can be used to provide auxiliary support for the output of a single pipe or double pipes.

[0023] As a further technical solution of the present invention, the lower support seat and the upper support seat are movably connected to each other through a rod body, and both ends of the lower support seat are provided with fastening bolts used in conjunction with the rod body.

[0024] Beneficial effects of the present invention:

[0025] 1. By setting a first side mold and a second side mold, when the injection molding equipment for the throttling socket-and-spigot pipe is used, the first mold and the second mold are used together to make it have a double-tube circulating discharge directional structure, and the shaping operation of two throttling socket-and-spigot pipes can be completed at the same time, thereby improving its working efficiency;

[0026] During operation, firstly, a motor is used to drive the gear, and the gear drives the chain to rotate. When the chain is running, several groups of first side molds and several groups of second side molds are in a rotating state. When the first side mold and the second side mold are tangent, the mold is closed. The continuous rotation of the first side mold and the second side mold is used to continuously extrude the socket pipe body. The first mold and the second mold can be used flexibly, so that the extrusion operation of two small-diameter socket pipe bodies can be completed in the first side mold and the second side mold at one time. At the same time, the user can replace the first mold and the second mold with a set of conventional molds, so that a large-diameter socket pipe body can be extruded between the first side mold and the second side mold. The docking card slot is used in conjunction with the splicing card strip to complete the splicing operation between the first side mold and the second side mold and the first mold and the second mold. Secondly, in order to improve the accuracy of the first side mold and the second side mold when the mold is closed, a limiting clamp is installed so that the first side mold and the second side mold are docked and fixed by the limiting clamp when they are closed, so as to prevent the first side mold and the second side mold from being misaligned, thereby improving the pipeline processing accuracy.

[0027] 2. By setting a spray rack and a telescopic sleeve, when the throttling socket-type pipe injection molding equipment is used, it has a pipe cooling switching structure, which can flexibly switch between the single-pipe and double-pipe cooling structures, thereby improving its application range;

[0028] When in use, firstly, several groups of nozzles of two groups of spray racks are used to cool the surface of the bell-and-spigot pipe body during the extrusion operation of the bell-and-spigot pipe body, so that the bell-and-spigot pipe body can be quickly cooled and shaped. Secondly, the circulating water tank uses the compressor to cool the cooling pipe through the refrigerant. When the nozzles of the spray rack spray water, the water body is collected by the cooling plate, and the water body is introduced into the inside of the circulating water tank through the drainage pipe. The cooling pipe is used to cool the used water body so that the water body temperature drops, and then the pump is used to re-transport it to the spray rack through the water inlet pipe to complete the circulation of the water body. The water consumption is reduced because the first side mold and the second side mold adopt a spliced ​​structure design, which can carry out a single-tube or double-tube extrusion structure, and the two groups of spray racks use telescopic sleeves to form a telescopic adjustment structure, so that the two groups of spray racks can be adjusted arbitrarily according to the pipe diameter. During operation, the spray rack is driven to move by a horizontal push rod to adjust the nozzle distance between the two groups of spray racks, so that two throttling socket-type pipes can pass between the two groups of spray racks, and at the same time, several groups of vertically arranged nozzles can evenly cool the two throttling socket-type pipes.

[0029] 3. By setting a support frame, when the throttling socket-and-spigot pipe injection molding equipment is used, it has an auxiliary support structure to avoid bending and deformation of the double throttling socket-and-spigot pipes during extrusion and transportation, thereby improving its processing quality;

[0030] During operation, the roller rods of the lower support seat and the upper support seat can be used to assist in supporting the output of a single pipe or double pipes. When performing a single pipe conveying operation, the lower support seat and the rod body are loosened by rotating the fastening bolt, and the rod body is pulled down to drive the upper support seat to move up and down, thereby adjusting the distance between the lower support seat and the upper support seat, so that a throttling socket-type pipe can pass between the lower support seat and the upper support seat, and the output pipe is assisted by the rotation of the roller rod. When performing a double pipe conveying operation, the distance between the lower support seat and the upper support seat is adjusted according to the size of the two pipes by pulling up the rod body, so that the lower support seat and the upper support seat are both supported on the lower surface of the pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present invention will be further described below in conjunction with the accompanying drawings.

[0032] Figure 1 It is a flow chart of the injection molding process of the throttling socket-and-spigot pipe of the present invention;

[0033] Figure 2 It is an overall structural diagram of the injection molding equipment for the throttling socket-and-spigot pipe of the present invention;

[0034] Figure 3 It is an internal structure diagram of a molding device in an injection molding device for a throttling socket-and-spigot pipe of the present invention;

[0035] Figure 4 It is an overall structural diagram of the first side mold in the injection molding equipment for throttling socket-and-spigot pipes of the present invention;

[0036] Figure 5 It is an overall structural diagram of a cooling plate in an injection molding device for a throttling socket-and-spigot pipe of the present invention;

[0037] Figure 6 It is an overall structural diagram of a spray rack in an injection molding device for a throttling socket-and-spigot pipe of the present invention;

[0038] Figure 7 It is a planar structural diagram of a support frame in an injection molding device for a throttling socket-and-spigot pipe of the present invention.

[0039] In the figure: 1. feed hopper; 2. fixed base; 3. circulating water tank; 4. support frame; 5. socket pipe body; 6. cooling plate; 7. first side mold; 8. former; 9. second side mold; 10. extruder; 11. docking buckle; 12. gear; 13. feed pipe; 14. first mold; 15. second mold; 16. docking slot; 17. splicing strip; 18. limit clamp; 19. cooling pipe; 20. drain pipe; 21. fixed frame; 22. nozzle; 23. spray frame; 24. telescopic sleeve; 25. horizontal push rod; 26. water inlet pipe; 27. pump body; 28. lower support seat; 29. ​​upper support seat; 30. roller rod; 31. fastening bolt; 32. rod body. DETAILED DESCRIPTION

[0040] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0041] like Figure 1 As shown, the throttling socket pipe injection molding process includes the following steps:

[0042] Step 1: pour the plastic particles into the feed hopper 1 of the injection molding equipment, so that the plastic particles enter the extruder 10, melt and extrude the plastic particles by the extruder 10, and transport the melted plastic particles to the inside of the molding device 8 through the feed pipe 13;

[0043] Step 2: The former 8 drives the gear 12 with a motor, and the gear 12 drives a plurality of sets of first side molds 7 and second side molds 9 to rotate with a chain structure, so that the first side molds 7 and the second side molds 9 complete the mold closing and mold separation operations during the rotation process, so that the melted plastic particles are formed into the socket pipe body 5 in the first side molds 7 and the second side molds 9;

[0044] Step three, the formed bell-and-spigot pipe body 5 is output from the end of the former 8, and the surface of the bell-and-spigot pipe body 5 is sprayed and cooled by the cooling plate 6 and the nozzle 22, so that the cold zone of the bell-and-spigot pipe body 5 is shaped, and then the support frame 4 is used to transport the bell-and-spigot pipe body 5 out.

[0045] like Figure 2 As shown, an injection molding device for a throttling socket-and-spigot pipe comprises a fixed base 2 and a former 8, wherein the former 8 is fixedly mounted at the middle position of the upper end of the fixed base 2, wherein the upper end of the fixed base 2 is located at one end of the former 8 and an extruder 10 is fixedly mounted thereon, and the upper end of the fixed base 2 is located at the other end of the former 8 and a cooling plate 6 is fixedly mounted thereon, wherein a plurality of groups of first side molds 7 are movably mounted on one side of the former 8, and a plurality of groups of second side molds 9 are movably mounted on the other side of the former 8, wherein a circulating water tank 3 is fixedly mounted below the cooling plate 6, wherein the cooling plate 6 and the circulating water tank 3 are connected through a drainage pipe 20, and the mold closing and mold separation operations can be completed by utilizing the rotation of the first side mold 7 and the second side mold 9, so that the plastic material continuously completes the shaping operation of the socket-and-spigot pipe during the extrusion process.

[0046] To solve the problem of synchronous extrusion of two pipes, such as Figure 3As shown, several groups of first side molds 7 and several groups of second side molds 9 are movably connected by chains, a gear 12 for cooperating with the chain is provided inside the former 8, a feed pipe 13 is provided at the middle position of one end of the former 8, and the surfaces of the first side mold 7 and the second side mold 9 are provided with limit clamps 18. The gear 12 is driven by a motor, and the chain is driven by the gear 12. When the chain is running, several groups of first side molds 7 and several groups of second side molds 9 are in a rotating state, and the first side mold 7 and the second side mold 9 are tangent to each other, that is, the mold is closed, and the continuous rotation of the first side mold 7 and the second side mold 9 is used to continuously extrude and mold the socket pipe body 5.

[0047] To solve the problem of synchronous extrusion of two pipes, such as Figure 4 As shown, the inner sides of the first side mold 7 and the second side mold 9 are spliced ​​with the first mold 14 and the second mold 15, and the first mold 14 is spliced ​​and installed on the outer surface of one side of the second mold 15. The first mold 14 and the second mold 15 can be used flexibly to flexibly use the first side mold 7 and the second side mold 9, so that the extrusion operation of two small-diameter socket pipe bodies 5 can be completed in the first side mold 7 and the second side mold 9 at one time. At the same time, the user can replace the first mold 14 and the second mold 15 with a set of conventional molds, so that a large-diameter socket pipe body 5 can be extruded between the first side mold 7 and the second side mold 9.

[0048] The inner sides of the first side mold 7 and the second side mold 9 are both provided with docking slots 16, and the outer surfaces of the first mold 14 and the second mold 15 are both provided with splicing strips 17 used in conjunction with the docking slots 16. The surfaces of the first side mold 7 and the second side mold 9 are provided with docking buckles 11 used in conjunction with the chain. The docking slots 16 and the splicing strips 17 can be used to complete the splicing operation between the first side mold 7 and the second side mold 9 and the first mold 14 and the second mold 15.

[0049] To solve the cooling problem during double-tube extrusion operation, such as Figure 5 As shown, two groups of spray racks 23 are provided in the middle of the upper end of the cooling plate 6, and a plurality of groups of nozzles 22 are fixedly installed on the inner side of the spray racks 23. The spray racks 23 and the cooling plate 6 are connected and fixed by a fixing rack 21. By utilizing the plurality of nozzles 22 of the two groups of spray racks 23, the surface of the socket pipe body 5 can be cooled during the extrusion operation of the socket pipe body 5, so that the socket pipe body 5 can be quickly cooled and shaped.

[0050] like Figure 5As shown, a water inlet pipe 26 is arranged between the spray rack 23 and the circulating water tank 3, a plurality of cooling pipes 19 are fixedly installed inside the circulating water tank 3, a compressor is arranged at the bottom of the circulating water tank 3, and the circulating water tank 3 uses the compressor to cool down the cooling pipes 19 through the refrigerant. When the nozzle 22 of the spray rack 23 sprays water, the water is collected by the cooling plate 6, and the water is introduced into the inside of the circulating water tank 3 through the drain pipe 20. The used water is cooled by the cooling pipe 19 to reduce the temperature of the water, and then the water is re-delivered to the spray rack 23 through the water inlet pipe 26 by a pump, thereby completing the recycling of the water.

[0051] like Figure 6 The two groups of spray racks 23 shown are movably connected by a telescopic sleeve 24, the fixed frame 21 and the spray rack 23 are driven by a transverse push rod 25, and a pump body 27 is provided at one end of the water inlet pipe 26. Because the first side mold 7 and the second side mold 9 adopt a spliced ​​structure design, a single-tube or double-tube extrusion structure can be performed, and the two groups of spray racks 23 use the telescopic sleeve 24 to form a telescopic adjustment structure, so that the two groups of spray racks 23 can be adjusted arbitrarily according to the diameter of the pipeline. During operation, the spray rack 23 is driven to move by the transverse push rod 25 to adjust the distance between the nozzles 22 of the two groups of spray racks 23.

[0052] A support frame 4 is provided at one end of the fixed base 2, and the support frame 4 includes a lower support seat 28 and an upper support seat 29. The upper support seat 29 is movably installed above the lower support seat 28, and rollers 30 are movably installed on the upper surfaces of the lower support seat 28 and the upper support seat 29. The rollers 30 of the lower support seat 28 and the upper support seat 29 can be used to provide auxiliary support for the output of a single pipe or two pipes.

[0053] like Figure 7 As shown, the lower support seat 28 and the upper support seat 29 are movably connected to each other through a rod body 32 , and both ends of the lower support seat 28 are provided with fastening bolts 31 used in conjunction with the rod body 32 .

[0054] When in use, the conventional device adopts a single-tube extrusion structure design, so that during the extrusion operation of the throttling socket-type pipe, only a single throttling socket-type pipe can be extruded at a time, and double-tube extrusion cannot be completed at the same time, which reduces its working efficiency;

[0055] To this end, by setting the first side mold 7 and the second side mold 9, when the throttling socket-type pipe injection molding device is used, the first mold 14 and the second mold 15 are used together, so that it has a double-tube circulating discharge directional structure, and the shaping operation of two throttling socket-type pipes can be completed at the same time, thereby improving its working efficiency;

[0056] During operation, firstly, the motor is used to drive the gear 12, and the gear 12 drives the chain to rotate. When the chain is running, the plurality of first side molds 7 and the plurality of second side molds 9 are in a rotating state. When the first side mold 7 and the second side mold 9 are tangent to each other, the mold is closed. The first side mold 7 and the second side mold 9 are continuously rotated to make the socket pipe body 5 continuously extruded and formed. The first mold 14 and the second mold 15 can flexibly use the first side mold 7 and the second side mold 9, so that the first side mold 7 and the second side mold 9 can complete the extrusion operation of two small-diameter socket pipe bodies 5 at one time. At the same time, the user can use the first mold 14 and the second mold 15 are replaced with a set of conventional molds, so that a large-diameter socket pipe body 5 can be extruded between the first side mold 7 and the second side mold 9, and the splicing operation between the first side mold 7 and the second side mold 9 and the first mold 14 and the second mold 15 can be completed by using the docking card groove 16 and the splicing card strip 17. Secondly, in order to improve the accuracy of the first side mold 7 and the second side mold 9 when closing the mold, by installing a limiting clamp 18, the first side mold 7 and the second side mold 9 are fixed by the limiting clamp 18 when closing, so as to prevent the first side mold 7 and the second side mold 9 from being misaligned, thereby improving the pipeline processing accuracy;

[0057] Secondly, when performing the extrusion processing of double-tube throttling socket-and-spigot pipes, traditional equipment cannot cool down the double-tube throttling socket-and-spigot pipes because the size and position of the single pipe and the double pipe are different. The traditional cooling method cannot evenly cool down the double-tube throttling socket-and-spigot pipes during extrusion, thereby reducing the effect of the double-tube extrusion operation of the throttling socket-and-spigot pipes.

[0058] To this end, by providing a spray rack 23 and a telescopic sleeve 24, when the throttling socket-type pipe injection molding device is used, it has a pipe cooling switching structure, which can flexibly switch between a single-pipe and a double-pipe cooling structure, thereby improving its application range;

[0059] When in use, firstly, the several groups of nozzles 22 of the two groups of spray racks 23 are used to cool the surface of the bell-and-spigot pipe body 5 during the extrusion operation of the bell-and-spigot pipe body 5, so that the bell-and-spigot pipe body 5 is quickly cooled and shaped. Secondly, the circulating water tank 3 uses the compressor to cool the cooling pipe 19 through the refrigerant. After the nozzles 22 of the spray rack 23 spray water, the water body is collected by the cooling plate 6, and the water body is introduced into the inside of the circulating water tank 3 through the drain pipe 20. The cooling pipe 19 is used to cool the used water body so that the water body temperature drops, and then the pump is used to re-deliver it to the spray rack 23 through the water inlet pipe 26 to complete the water body. Recycling and reducing water consumption, because the first side mold 7 and the second side mold 9 adopt a splicing structure design, a single-tube or double-tube extrusion structure can be performed, and the two groups of spray racks 23 use telescopic sleeves 24 to form a telescopic adjustment structure, so that the two groups of spray racks 23 can be arbitrarily adjusted according to the pipe diameter. During operation, the spray rack 23 is driven to move by the transverse push rod 25 to adjust the distance between the two groups of spray racks 23. The nozzles 22 can pass through the two groups of throttling socket-type pipes, and at the same time, a plurality of groups of vertically arranged nozzles 22 can evenly cool the two throttling socket-type pipes;

[0060] At the same time, when the double-tube throttling socket-and-spigot pipe is extruded, one end of the pipe will bend downward due to the weight of the pipe itself during the pipe transportation process, causing both throttling socket-and-spigot pipes to bend and deform, reducing their processing quality;

[0061] By providing the support frame 4, when the throttling socket-and-spigot pipe injection molding device is used, it has an auxiliary support structure, thereby preventing the double throttling socket-and-spigot pipes from bending and deforming during the extrusion and transportation process, thereby improving the processing quality;

[0062] During operation, the roller rod 30 of the lower support seat 28 and the upper support seat 29 can be used to assist in supporting the output of a single pipe or two pipes. When performing a single pipe conveying operation, the lower support seat 28 and the rod body 32 are loosened by rotating the fastening bolt 31, and the rod body 32 is pulled down to drive the upper support seat 29 to move up and down, thereby adjusting the distance between the lower support seat 28 and the upper support seat 29, so that a throttling socket-type pipe can pass between the lower support seat 28 and the upper support seat 29, and the output pipe is assisted by the rotation of the roller rod 30. When performing a double pipe conveying operation, the distance between the lower support seat 28 and the upper support seat 29 is adjusted according to the size of the two pipes by pulling up the rod body 32, so that the lower support seat 28 and the upper support seat 29 are both supported on the lower surface of the pipe.

[0063] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. The throttling socket pipe injection molding process is characterized by: The following steps are involved: Step 1: pour plastic particles into a feed hopper (1) of an injection molding device, so that the plastic particles enter an extruder (10), melt and extrude the plastic particles using the extruder (10), and transport the melted plastic particles to the interior of a molding device (8) through a feed pipe (13); Step 2: The former (8) drives the gear (12) with a motor, and the gear (12) drives a plurality of sets of first side molds (7) and second side molds (9) to rotate with a chain structure, so that the first side molds (7) and the second side molds (9) complete mold closing and mold separation operations during the rotation process, so that the melted plastic particles are formed into the socket pipe body (5) in the first side molds (7) and the second side molds (9); Step three, the formed bell-and-spigot pipe body (5) is output from the end of the former (8), and the surface of the bell-and-spigot pipe body (5) is sprayed and cooled by a cooling plate (6) in cooperation with a nozzle (22), so that the cold zone of the bell-and-spigot pipe body (5) is shaped, and then the bell-and-spigot pipe body (5) is transported and discharged by a support frame (4).

2. An injection molding device for a throttling socket-and-spigot pipe, characterized in that: The invention comprises a fixed base (2) and a former (8), wherein the former (8) is fixedly mounted at the middle position of the upper end of the fixed base (2), an extruder (10) is fixedly mounted at the upper end of the fixed base (2) located at one end of the former (8), a cooling plate (6) is fixedly mounted at the upper end of the fixed base (2) located at the other end of the former (8), a plurality of groups of first side molds (7) are movably mounted on one side of the former (8), and a plurality of groups of second side molds (9) are movably mounted on the other side of the former (8), a circulating water tank (3) is fixedly mounted below the cooling plate (6), and the cooling plate (6) and the circulating water tank (3) are connected through a drainage pipe (20).

3. The injection molding equipment for throttling socket-and-spigot pipe according to claim 2, characterized in that: A plurality of groups of first side molds (7) and a plurality of groups of second side molds (9) are movably connected via chains; a gear (12) for use with the chain is provided inside the former (8); a feed pipe (13) is provided at the middle of one end of the former (8); and limiting clamps (18) are provided on the surfaces of the first side mold (7) and the second side mold (9).

4. The injection molding equipment for throttling socket-and-spigot pipe according to claim 2, characterized in that: The first mold (14) and the second mold (15) are spliced ​​and installed on the inner sides of the first side mold (7) and the second side mold (9), and the first mold (14) is spliced ​​and installed on the outer surface of one side of the second mold (15).

5. The injection molding equipment for throttling socket-and-spigot pipe according to claim 4, characterized in that: The inner sides of the first side mold (7) and the second side mold (9) are both provided with docking slots (16); the outer surfaces of the first mold (14) and the second mold (15) are both provided with splicing strips (17) used in conjunction with the docking slots (16); and the surfaces of the first side mold (7) and the second side mold (9) are provided with docking buckles (11) used in conjunction with the chain.

6. The injection molding equipment for throttling socket-and-spigot pipe according to claim 2, characterized in that: Two groups of spray racks (23) are arranged in the middle of the upper end of the cooling plate (6), and a plurality of groups of spray heads (22) are fixedly installed on the inner side of the spray rack (23). The spray rack (23) and the cooling plate (6) are connected and fixed by a fixing frame (21).

7. The injection molding equipment for throttling socket-and-spigot pipe according to claim 6, characterized in that: A water inlet pipe (26) is arranged between the spray rack (23) and the circulating water tank (3), a plurality of groups of cooling pipes (19) are fixedly installed inside the circulating water tank (3), and a compressor is arranged at the bottom of the circulating water tank (3).

8. The injection molding equipment for throttling socket-and-spigot pipe according to claim 6, characterized in that: The two groups of spray racks (23) are movably connected via a telescopic sleeve (24), the fixed frame (21) and the spray rack (23) are driven via a transverse push rod (25), and a pump body (27) is provided at one end of a water inlet pipe (26).

9. The injection molding equipment for throttling socket-and-spigot pipe according to claim 2, characterized in that: A support frame (4) is provided at one end of the fixed base (2), and the support frame (4) comprises a lower support seat (28) and an upper support seat (29). The upper support seat (29) is movably mounted above the lower support seat (28), and rollers (30) are movably mounted on the upper surfaces of the lower support seat (28) and the upper support seat (29).

10. The injection molding equipment for throttling socket-and-spigot pipe according to claim 9, characterized in that: The lower support seat (28) and the upper support seat (29) are movably connected to each other via a rod body (32), and both ends of the lower support seat (28) are provided with fastening bolts (31) used in conjunction with the rod body (32).

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