阅读说明：本技术 熔融态聚苯乙烯塑料制造塑料管件的组件 (Assembly for manufacturing plastic pipe fittings from molten polystyrene plastic ) 是由 陆永柱 祝磊 丁先虎 于 2019-11-24 设计创作，主要内容包括：本发明提供了熔融态聚苯乙烯塑料制造塑料管件的组件,其包括主架体、安装于主架体上并且用于接收熔融态塑料并使其成型为符合要求的管件形状的管件成型装置(200),管件成型装置(200)包括原料进给机构(210)、管件成型机构(220)、管件切割机构(230),原料进给机构(210)用于接收熔融态塑料并将其输送给管件成型机构(220),管件成型机构(220)用于将熔融态塑料成型为圆形管件结构,管件切割机构(230)用于将成型后的圆形管件切割呈符合要求长度的管件段；其可依次对塑料原材料进行熔化、输送进给、水冷成型、定长切割处理并得到符合生产要求的管件,得到的管件切断面光滑平整,质量更佳,更便于后续的销售。(The invention provides a component for manufacturing plastic pipe fittings by using molten polystyrene plastic, which comprises a main frame body and a pipe fitting forming device (200) which is arranged on the main frame body and is used for receiving the molten plastic and forming the molten plastic into a pipe fitting shape meeting requirements, wherein the pipe fitting forming device (200) comprises a raw material feeding mechanism (210), a pipe fitting forming mechanism (220) and a pipe fitting cutting mechanism (230), the raw material feeding mechanism (210) is used for receiving the molten plastic and conveying the molten plastic to the pipe fitting forming mechanism (220), the pipe fitting forming mechanism (220) is used for forming the molten plastic into a circular pipe fitting structure, and the pipe fitting cutting mechanism (230) is used for cutting the formed circular pipe fitting into pipe fitting sections meeting the requirements; the plastic pipe fitting can be sequentially subjected to melting, conveying and feeding, water-cooling forming and fixed-length cutting treatment on plastic raw materials, the pipe fitting meeting the production requirement is obtained, the cut surface of the obtained pipe fitting is smooth and flat, the quality is better, and the subsequent sale is more convenient.)

1. The assembly for manufacturing the plastic pipe fitting by using the molten polystyrene plastic is characterized by comprising a main frame body and a pipe fitting forming device (200) which is arranged on the main frame body and used for receiving the molten plastic and forming the molten plastic into a pipe fitting shape meeting requirements, wherein the pipe fitting forming device (200) comprises a raw material feeding mechanism (210), a pipe fitting forming mechanism (220) and a pipe fitting cutting mechanism (230), the raw material feeding mechanism (210) is used for receiving the molten plastic and conveying the molten plastic to the pipe fitting forming mechanism (220), the pipe fitting forming mechanism (220) is used for forming the molten plastic into a circular pipe fitting structure, and the pipe fitting cutting mechanism (230) is used for cutting the formed circular pipe fitting into pipe fitting sections meeting the requirements.

2. The assembly for manufacturing the plastic pipe fitting by the polystyrene plastic in the molten state according to claim 1, wherein the raw material feeding mechanism (210) comprises a connecting pipeline (211), a feeding pipeline (215) and a feeding member, the feeding pipeline (215) is horizontally fixed on the main frame body, the feeding pipeline (215) is positioned below the conveying pipeline (121), a pipe orifice of the feeding pipeline (215) is provided with a fixed end cover in a matching way, the other pipe orifice is provided with a fastening bracket in a matching way, the outer circular surface of the feeding pipeline (215) is also connected and communicated with a communicating nozzle (2151), the communicating nozzle (2151) is positioned right above the feeding pipeline (215), and the fixed end cover is coaxially provided with an avoiding hole penetrating through the thickness of the fixed end cover;

one end of the connecting pipeline (211) is used for receiving molten plastic, and the other end of the connecting pipeline is fixedly connected and communicated with the communicating nozzle (2151).

3. The assembly for manufacturing the plastic pipe fitting by using the polystyrene plastics in the molten state as claimed in claim 2, wherein the feeding member comprises a feeding screw rod (216), a feeding motor (217) and a pushing plug (218), an output shaft of the feeding motor (217) and the feeding screw rod (216) are coaxially arranged with the feeding pipeline (215), an output end of the feeding screw rod (216) is movably connected with the fastening bracket, and an input end of the feeding screw rod passes through the feeding pipeline (215) and an avoidance hole arranged on the fixed end cover and is positioned outside the feeding pipeline (215);

the feeding motor (217) is fixed on the main frame body, a coupler is arranged between the power output end of the feeding motor (217) and the input end of the feeding screw rod (216), and power is connected and transmitted between the power output end of the feeding motor and the input end of the feeding screw rod through the coupler;

the pushing plug (218) is of a circular piston structure matched with an inner cavity of the feeding pipeline (215), the pushing plug (218) is located in the feeding pipeline (215) and forms sealed sliding guide fit between the pushing plug and the feeding pipeline, the pushing plug (218) is further coaxially installed outside the feeding screw rod (216) through a nut, the initial position of the pushing plug (218) is close to a fixed end cover, and the feeding screw rod (216) axially rotates around the feeding screw rod (216) and can pull the pushing plug (218) to displace along the axial direction of the feeding screw rod (216).

4. An assembly for manufacturing plastic pipes from polystyrene in the molten state according to claim 2, characterized in that the external part of said feeding duct (215) is fitted with a second heating element (219) for keeping the plastic inside the feeding duct (215) always in the molten state.

5. An assembly for manufacturing plastic pipes from styrofoam in the molten state according to claim 2, wherein said connecting duct (211) is provided with a pressure relief member for relieving the pressure of the molten plastic inside the connecting duct (211) during the process of closing the access mouth (2151) by the push plug (218);

the pressure relief piece comprises a pressure relief pipeline (212), a pressure relief plug (213) and a pressure relief spring (214), the pressure relief pipeline (212) is of a circular pipeline structure with one open end and one closed end, the pressure relief pipeline (212) is horizontally fixed on the main frame body, and the open end of the pressure relief pipeline (212) is also communicated with the connecting pipeline (211) in a mutual connection manner;

the pressure relief plug (213) is of a circular piston structure matched with the inner cavity of the pressure relief pipeline (212), the pressure relief plug (213) is positioned in the pressure relief pipeline (212) and forms sealed sliding guide fit between the pressure relief plug and the pressure relief pipeline;

one end of the pressure relief spring (214) is fixedly connected with the cavity bottom of the pressure relief pipeline (212), the other end of the pressure relief spring (214) is fixedly connected with the pressure relief plug (213), the elastic force of the pressure relief spring (214) drives the pressure relief plug (213) to move away from the cavity bottom of the pressure relief pipeline (212), and the initial position of the pressure relief plug (213) is located at the connection position between the pressure relief pipeline (212) and the connecting pipeline (211).

6. The assembly for manufacturing the plastic pipe fitting by the polystyrene plastic in the molten state according to the claim 3 or 5, wherein the pipe fitting forming mechanism (220) comprises an outer die body (221), an inner die core (222) and a water cooling pipeline, the outer die body (221) is a pipeline structure with openings at two ends and is coaxially arranged with the feeding pipeline (215), the outer die body (221) can be divided into two parts along the self axial direction and is respectively a receiving section and a forming section, the receiving section is of a circular truncated cone structure, the forming section is of a cylindrical structure, the large end of the receiving section is communicated with the pipe orifice of the feeding pipeline (215) provided with a fastening bracket, and the small end of the receiving section is communicated with the forming section;

the inner die core (222) is of a circular cylinder structure with one open end and one closed end, the inner die core (222) is coaxially located in the outer die body (221), the closed end of the inner die core (222) faces the large end of the circular truncated cone section of the outer die body (221), and the open end of the inner die core (222) penetrates through the cylindrical section of the outer die body (221) and is located outside the outer die body (221).

7. The assembly for manufacturing the plastic pipe fitting by using the polystyrene plastic in the molten state as claimed in claim 6, wherein the water cooling pipeline comprises a first water inlet pipeline (223), a second water inlet pipeline (224), a first inner wall cooling water pipe (225) and a first outer wall cooling water pipe (226), the first water inlet pipeline (223) is of a closed circular ring-shaped pipeline structure, the first water inlet pipeline (223) is fixed on the main frame body, the first water inlet pipeline (223) coaxially surrounds the outer part of the outer mold body (221), one end of the second water inlet pipeline (224) is connected and communicated with an external water supply device, and the other end of the second water inlet pipeline (224) is connected and communicated with the first water inlet pipeline (223);

one end of the inner wall cooling water pipe (225) is connected and communicated with the water inlet pipeline I (223), the other end of the inner wall cooling water pipe penetrates through the outer die body (221) and is fixedly connected and communicated with the inner die core (222), and a plurality of groups of inner wall cooling water pipes (225) are arranged in an array mode along the circumferential direction of the inner die core (222);

the outer die body (221) is characterized in that a spraying cylinder which is of a circular shell structure with two closed ends and an inner cavity is coaxially arranged at the free end of a cylindrical section, a plurality of groups of spraying holes penetrating through the thickness of the spraying cylinder are uniformly arranged on the inner annular surface of the spraying cylinder at intervals, one end of an outer wall cooling water pipe (226) is connected and communicated with a water inlet pipeline I (223), the other end of the outer wall cooling water pipe is connected and communicated with the spraying cylinder, and the outer wall cooling water pipe (226) is provided with a plurality of groups in an array mode along the circumferential direction of the spraying cylinder.

8. An assembly for manufacturing plastic pipes from polystyrene in a molten state according to claim 6, characterised in that said pipe cutting means (230) are located on the side of the pipe forming means (220) facing away from the feeding duct (215), the pipe cutting means (230) comprising a synchronous displacement member (2310), said pipe cutting member (2320) being adapted to perform a fixed length cutting process on the circular pipe after the cooling forming output, said synchronous displacement member (2310) being adapted to maintain the relative rest between the pipe cutting member (2320) and the circular pipe after the continuous output;

the synchronous displacement component (2310) comprises a fixing support (2311), a baffle (2312), a sliding rod (2314), a return spring (2315), a mounting support (2316) and a guide plate (2317), the fixing support (2311) is fixedly connected with the main frame body, the extending direction of the sliding rod (2314) is parallel to the axial direction of the inner die core (222), the sliding rod (2314) is movably mounted on the fixing support (2311) and forms sliding guide fit between the fixing support and the inner die core (222), the end part of the sliding rod (2314) facing the inner die core (222) is provided with abutting steps, and the sliding rod (2314) is provided with two groups;

the reset springs (2315) are sleeved outside the sliding rod (2314), two groups of reset springs (2315) are correspondingly arranged, one end of each reset spring (2315) is abutted against the abutting step, the other end of each reset spring (2315) is abutted against the fixed support (2311), and the elastic force of each reset spring (2315) drives the sliding rod (2314) to move close to the inner die core (222);

the large face of the baffle (2312) is perpendicular to the extending direction of the sliding rod (2314), the baffle (2312) is fixed at the end, away from the inner die core (222), of the sliding rod (2314), the baffle (2312) can be in contact with a round pipe which is formed in a cooling mode and continuously output outwards, and an inductor (2313) used for inducing whether the round pipe is in contact with the baffle (2312) or not is arranged on the baffle (2312);

the installation support (2316) is fixedly installed outside the sliding rod (2314), the sliding rod (2314) moves and pulls the installation support (2316) to move synchronously, the pipe cutting member (2320) is installed on the installation support (2316), and the installation support (2316) moves and pulls the pipe cutting member (2320) to move synchronously;

the guide plate (2317) is obliquely fixed on the fixed bracket (2311) and the highest point of the guide plate (2317) is positioned right below the circular pipe which is cooled, formed and continuously output outwards.

9. The assembly for manufacturing the plastic pipe fitting by using the molten polystyrene plastic as claimed in claim 8, wherein the pipe fitting cutting member (2320) comprises a driving motor (2321), a mounting shaft (2322), a supporting frame (2324), a cutting motor (2325) and a cutting cutter wheel (2326), the axial directions of the output shaft of the driving motor (2321) and the mounting shaft (2322) are both parallel to the extending direction of the sliding rod (2314), the driving motor (2321) is fixed on the mounting bracket (2316), the mounting shaft (2322) is movably mounted on the mounting bracket (2316) and can rotate around the axial direction of the mounting shaft (2316), the supporting frame (2324) is fixed outside the mounting shaft (2322), and the mounting shaft (2322) rotates and pulls the supporting frame (2324) to rotate synchronously;

a third power transmission member (2323) is arranged between the power output end of the driving motor (2321) and the mounting shaft (2322), and power is connected and transmitted between the third power transmission member (2323) and the mounting shaft through the third power transmission member (2323), and the third power transmission member (2323) is of a belt transmission structure;

the axial directions of an output shaft of the cutting motor (2325) and the cutting knife wheel (2326) are both parallel to the extending direction of the sliding rod (2314), the cutting motor (2325) is fixed on the supporting frame (2324), the cutting knife wheel (2326) is movably mounted on the supporting frame (2324) and can axially rotate around the cutting knife wheel, a power transmission member IV (2327) is arranged between the power output end of the cutting motor (2325) and the cutting knife wheel (2326), power connection transmission is carried out between the power output end of the cutting motor (2325) and the cutting knife wheel IV (2327), and the power transmission member IV (2327) is of a belt transmission structure;

the distance between the cutting knife wheel (2326) and the baffle (2312) is equal to the length of the pipe fitting meeting the production requirement.

10. An assembly for manufacturing plastic tubing from polystyrene plastic in molten state according to claim 8, characterized in that said baffle (2312) is provided with water outlet holes arranged coaxially with the inner mold core (222).

Technical Field

The invention relates to the field of plastic processing, in particular to a plastic pipe fitting forming and manufacturing assembly.

Background

The plastic pipe has the characteristics of light weight, corrosion resistance, attractive appearance, no bad smell, easy processing, convenient construction and the like, is widely applied to building engineering and is mainly used as a tap water supply system pipe, a drainage, exhaust and pollution discharge sanitary pipe, an underground drainage pipe system, a rainwater pipe, a wire penetrating pipe for electric wire installation and application and the like of a house building Water-cooling shaping, fixed length cutting handle and obtain the pipe fitting that accords with the production requirement, and in the fixed length cutting process, the cutting break bar keeps relative quiescent condition between with the pipe fitting throughout to make the pipe fitting cut surface who obtains smooth level and smooth, the quality is better, is more convenient for subsequent sale.

Disclosure of Invention

In order to solve the defects of the prior art, the invention aims to provide a plastic pipe fitting forming and manufacturing assembly, which receives molten plastic, sequentially carries out conveying and feeding, water-cooling forming and fixed-length cutting on the molten plastic, obtains a pipe fitting meeting production requirements, and has the advantages of smooth and flat cut surface, better quality and more convenience for subsequent sales.

In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows.

The assembly for manufacturing the plastic pipe fitting by using the molten polystyrene plastic comprises a main frame body and a pipe fitting forming device (200) which is arranged on the main frame body and is used for receiving the molten plastic and forming the molten plastic into a pipe fitting shape meeting requirements, wherein the pipe fitting forming device (200) comprises a raw material feeding mechanism (210), a pipe fitting forming mechanism (220) and a pipe fitting cutting mechanism (230), the raw material feeding mechanism (210) is used for receiving the molten plastic and conveying the molten plastic to the pipe fitting forming mechanism (220), the pipe fitting forming mechanism (220) is used for forming the molten plastic into a circular pipe fitting structure, and the pipe fitting cutting mechanism (230) is used for cutting the formed circular pipe fitting into a pipe fitting section meeting the requirements.

The technical scheme is further improved and optimized.

The raw material feeding mechanism (210) comprises a connecting pipeline (211), a feeding pipeline (215) and a feeding piece, wherein the feeding pipeline (215) is horizontally fixed on the main frame body, the feeding pipeline (215) is positioned below the conveying pipeline (121), one pipe orifice of the feeding pipeline (215) is provided with a fixed end cover in a matching way, the other pipe orifice of the feeding pipeline (215) is provided with a fastening support in a matching way, the outer circular surface of the feeding pipeline (215) is also connected and communicated with a communicating nozzle (2151), the communicating nozzle (2151) is positioned right above the feeding pipeline (215), and the fixed end cover is coaxially provided with an avoiding hole penetrating through the thickness of the fixed end cover;

one end of the connecting pipeline (211) is used for receiving molten plastic, and the other end of the connecting pipeline is fixedly connected and communicated with the communicating nozzle (2151).

The technical scheme is further improved and optimized.

The feeding piece comprises a feeding screw rod (216), a feeding motor (217) and a pushing plug (218), an output shaft of the feeding motor (217) and the feeding screw rod (216) are coaxially arranged with the feeding pipeline (215), the output end of the feeding screw rod (216) is movably connected with the fastening bracket, and the input end of the feeding screw rod passes through the feeding pipeline (215) and an avoiding hole arranged on the fixed end cover and is positioned outside the feeding pipeline (215);

the feeding motor (217) is fixed on the main frame body, a coupler is arranged between the power output end of the feeding motor (217) and the input end of the feeding screw rod (216), and power is connected and transmitted between the power output end of the feeding motor and the input end of the feeding screw rod through the coupler;

the pushing plug (218) is of a circular piston structure matched with an inner cavity of the feeding pipeline (215), the pushing plug (218) is located in the feeding pipeline (215) and forms sealed sliding guide fit between the pushing plug and the feeding pipeline, the pushing plug (218) is further coaxially installed outside the feeding screw rod (216) through a nut, the initial position of the pushing plug (218) is close to a fixed end cover, and the feeding screw rod (216) axially rotates around the feeding screw rod (216) and can pull the pushing plug (218) to displace along the axial direction of the feeding screw rod (216).

The technical scheme is further improved and optimized.

And a second heating element (219) for keeping the plastic in the feeding pipeline (215) in a molten state all the time is matched and installed outside the feeding pipeline (215).

The technical scheme is further improved and optimized.

The connecting pipeline (211) is provided with a pressure relief piece for relieving the pressure of the molten plastic in the connecting pipeline (211) in the process of plugging the connecting nozzle (2151) by the pushing plug (218);

the pressure relief piece comprises a pressure relief pipeline (212), a pressure relief plug (213) and a pressure relief spring (214), the pressure relief pipeline (212) is of a circular pipeline structure with one open end and one closed end, the pressure relief pipeline (212) is horizontally fixed on the main frame body, and the open end of the pressure relief pipeline (212) is also communicated with the connecting pipeline (211) in a mutual connection manner;

the pressure relief plug (213) is of a circular piston structure matched with the inner cavity of the pressure relief pipeline (212), the pressure relief plug (213) is positioned in the pressure relief pipeline (212) and forms sealed sliding guide fit between the pressure relief plug and the pressure relief pipeline;

one end of the pressure relief spring (214) is fixedly connected with the cavity bottom of the pressure relief pipeline (212), the other end of the pressure relief spring (214) is fixedly connected with the pressure relief plug (213), the elastic force of the pressure relief spring (214) drives the pressure relief plug (213) to move away from the cavity bottom of the pressure relief pipeline (212), and the initial position of the pressure relief plug (213) is located at the connection position between the pressure relief pipeline (212) and the connecting pipeline (211).

The technical scheme is further improved and optimized.

The pipe fitting forming mechanism (220) comprises an outer die body (221), an inner die core (222) and a water cooling pipeline, wherein the outer die body (221) is of a pipeline structure with openings at two ends and is coaxially arranged with a feeding pipeline (215), the outer die body (221) can be divided into two parts along the self axial direction and is respectively a receiving section and a forming section, the receiving section is of a circular truncated cone structure, the forming section is of a cylindrical structure, the large end of the receiving section is communicated with a pipe orifice of the feeding pipeline (215) provided with a fastening support, and the small end of the receiving section is communicated with the forming section;

the inner die core (222) is of a circular cylinder structure with one open end and one closed end, the inner die core (222) is coaxially located in the outer die body (221), the closed end of the inner die core (222) faces the large end of the circular truncated cone section of the outer die body (221), and the open end of the inner die core (222) penetrates through the cylindrical section of the outer die body (221) and is located outside the outer die body (221).

The technical scheme is further improved and optimized.

The water cooling pipeline comprises a water inlet pipeline I (223), a water inlet pipeline II (224), an inner wall cooling water pipe (225) and an outer wall cooling water pipe (226), the water inlet pipeline I (223) is of a closed circular ring-shaped pipeline structure, the water inlet pipeline I (223) is fixed on the main frame body, the water inlet pipeline I (223) coaxially surrounds the outer portion of the outer die body (221), one end of the water inlet pipeline II (224) is connected and communicated with external water supply equipment, and the other end of the water inlet pipeline II (224) is connected and communicated with the water inlet pipeline I (223);

one end of the inner wall cooling water pipe (225) is connected and communicated with the water inlet pipeline I (223), the other end of the inner wall cooling water pipe penetrates through the outer die body (221) and is fixedly connected and communicated with the inner die core (222), and a plurality of groups of inner wall cooling water pipes (225) are arranged in an array mode along the circumferential direction of the inner die core (222);

the outer die body (221) is characterized in that a spraying cylinder which is of a circular shell structure with two closed ends and an inner cavity is coaxially arranged at the free end of a cylindrical section, a plurality of groups of spraying holes penetrating through the thickness of the spraying cylinder are uniformly arranged on the inner annular surface of the spraying cylinder at intervals, one end of an outer wall cooling water pipe (226) is connected and communicated with a water inlet pipeline I (223), the other end of the outer wall cooling water pipe is connected and communicated with the spraying cylinder, and the outer wall cooling water pipe (226) is provided with a plurality of groups in an array mode along the circumferential direction of the spraying cylinder.

The technical scheme is further improved and optimized.

The pipe cutting mechanism (230) is positioned on one side, away from the feeding pipeline (215), of the pipe forming mechanism (220), the pipe cutting mechanism (230) comprises a synchronous displacement pipe (2310) and a pipe cutting member (2320), the pipe cutting member (2320) is used for carrying out fixed-length cutting processing on the circular pipe after the cooling forming output, and the synchronous displacement member (2310) is used for keeping the pipe cutting member (2320) and the circular pipe which is continuously output in a relatively static state;

the synchronous displacement component (2310) comprises a fixing support (2311), a baffle (2312), a sliding rod (2314), a return spring (2315), a mounting support (2316) and a guide plate (2317), the fixing support (2311) is fixedly connected with the main frame body, the extending direction of the sliding rod (2314) is parallel to the axial direction of the inner die core (222), the sliding rod (2314) is movably mounted on the fixing support (2311) and forms sliding guide fit between the fixing support and the inner die core (222), the end part of the sliding rod (2314) facing the inner die core (222) is provided with abutting steps, and the sliding rod (2314) is provided with two groups;

the reset springs (2315) are sleeved outside the sliding rod (2314), two groups of reset springs (2315) are correspondingly arranged, one end of each reset spring (2315) is abutted against the abutting step, the other end of each reset spring (2315) is abutted against the fixed support (2311), and the elastic force of each reset spring (2315) drives the sliding rod (2314) to move close to the inner die core (222);

the large face of the baffle (2312) is perpendicular to the extending direction of the sliding rod (2314), the baffle (2312) is fixed at the end, away from the inner die core (222), of the sliding rod (2314), the baffle (2312) can be in contact with a round pipe which is formed in a cooling mode and continuously output outwards, and an inductor (2313) used for inducing whether the round pipe is in contact with the baffle (2312) or not is arranged on the baffle (2312);

the installation support (2316) is fixedly installed outside the sliding rod (2314), the sliding rod (2314) moves and pulls the installation support (2316) to move synchronously, the pipe cutting member (2320) is installed on the installation support (2316), and the installation support (2316) moves and pulls the pipe cutting member (2320) to move synchronously;

the guide plate (2317) is obliquely fixed on the fixed bracket (2311) and the highest point of the guide plate (2317) is positioned right below the circular pipe which is cooled, formed and continuously output outwards.

The technical scheme is further improved and optimized.

The pipe fitting cutting member (2320) comprises a driving motor (2321), a mounting shaft (2322), a supporting frame (2324), a cutting motor (2325) and a cutting cutter wheel (2326), the axial directions of an output shaft of the driving motor (2321) and the mounting shaft (2322) are parallel to the extending direction of the sliding rod (2314), the driving motor (2321) is fixed on the mounting bracket (2316), the mounting shaft (2322) is movably mounted on the mounting bracket (2316) and can rotate around the axial direction of the mounting shaft, the supporting frame (2324) is fixed outside the mounting shaft (2322), and the mounting shaft (2322) rotates and pulls the supporting frame (2324) to rotate synchronously;

a third power transmission member (2323) is arranged between the power output end of the driving motor (2321) and the mounting shaft (2322), and power is connected and transmitted between the third power transmission member (2323) and the mounting shaft through the third power transmission member (2323), and the third power transmission member (2323) is of a belt transmission structure;

the axial directions of an output shaft of the cutting motor (2325) and the cutting knife wheel (2326) are both parallel to the extending direction of the sliding rod (2314), the cutting motor (2325) is fixed on the supporting frame (2324), the cutting knife wheel (2326) is movably mounted on the supporting frame (2324) and can axially rotate around the cutting knife wheel, a power transmission member IV (2327) is arranged between the power output end of the cutting motor (2325) and the cutting knife wheel (2326), power connection transmission is carried out between the power output end of the cutting motor (2325) and the cutting knife wheel IV (2327), and the power transmission member IV (2327) is of a belt transmission structure;

the distance between the cutting knife wheel (2326) and the baffle (2312) is equal to the length of the pipe fitting meeting the production requirement.

The technical scheme is further improved and optimized.

The baffle (2312) is provided with water outlet holes which are coaxially arranged with the inner mold core (222).

Compared with the prior art, the invention has the beneficial effects that the plastic raw material is sequentially melted, conveyed and fed, water-cooled and formed, and cut to a fixed length to obtain the pipe fitting meeting the production requirement, in the melting process, the melted plastic can be subjected to impurity filtering treatment by the metal filter screen when flowing, and the impurities can be dragged and conveyed away by the auger after being blocked by the metal filter screen, so that the metal filter screen is prevented from being frequently replaced and maintained, the production efficiency is reduced, and the manpower and material resources are wasted; in the conveying and feeding process, the pressure relief piece can achieve the purpose of relieving the pressure of the molten plastic in the connecting pipeline when the connector nozzle is blocked by the pushing plug, so that the phenomenon of high pressure caused by excessive molten plastic in the connecting pipeline is avoided; in the water-cooling forming process, the inner wall and the outer wall of the pipe fitting can be fully cooled due to the existence of the inner wall cooling water pipe and the outer wall cooling water pipe, so that the cooling forming effect is better; in the fixed-length cutting process, the cutting knife wheel always keeps a relative static state with the pipe fitting, so that the obtained pipe fitting cut-off surface is smooth and flat, the quality is better, and subsequent sales are more convenient.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic structural diagram of the present invention.

Fig. 3 is a schematic view of the structure of the plastic melting apparatus of the present invention.

Fig. 4 is a schematic structural view of the melting mechanism of the present invention.

Fig. 5 is a schematic cross-sectional view of the trash removal duct of the present invention.

Fig. 6 is a schematic structural diagram of the conveying mechanism of the present invention.

Fig. 7 is a schematic structural diagram of the pipe forming apparatus of the present invention.

Fig. 8 is a schematic structural diagram of the pipe forming apparatus of the present invention.

Fig. 9 is a schematic structural view of the material feeding mechanism of the present invention.

Fig. 10 is a schematic view of the feed conduit of the present invention in cooperation with a feed member.

Fig. 11 is a schematic view of the mating of the connecting tube to the pressure relief member of the present invention.

Fig. 12 is a schematic cross-sectional view of a connecting tube and a pressure relief element of the present invention.

Fig. 13 is a schematic structural diagram of the pipe forming mechanism of the present invention.

Fig. 14 is a schematic cross-sectional view of the pipe forming mechanism of the present invention.

Fig. 15 is a schematic structural diagram of the pipe cutting mechanism of the present invention.

FIG. 16 is a schematic structural diagram of a synchronous displacement member according to the present invention.

FIG. 17 is a schematic structural diagram of a synchronous displacement member according to the present invention.

Fig. 18 is a schematic structural view of the pipe cutting member of the present invention.

Detailed Description

The invention has the advantages that the plastic raw material is melted, conveyed and fed, water-cooled and formed and cut at a fixed length in sequence, so that the pipe fitting meeting the production requirement can be obtained, in the melting process, the melted plastic can be subjected to impurity filtering treatment by the metal filter screen when flowing, and impurities can be dragged and conveyed away by the auger after being blocked by the metal filter screen, thereby avoiding the situations that the metal filter screen is frequently replaced and maintained, the production efficiency is reduced and manpower and material resources are wasted; in the conveying and feeding process, the pressure relief piece can achieve the purpose of relieving the pressure of the molten plastic in the connecting pipeline when the connector nozzle is blocked by the pushing plug, so that the phenomenon of high pressure caused by excessive molten plastic in the connecting pipeline is avoided; in the water-cooling forming process, the inner wall and the outer wall of the pipe fitting can be fully cooled due to the existence of the inner wall cooling water pipe and the outer wall cooling water pipe, so that the cooling forming effect is better; in the fixed-length cutting process, the cutting knife wheel always keeps a relative static state with the pipe fitting, so that the obtained pipe fitting cut-off surface is smooth and flat, the quality is better, and subsequent sales are more convenient.

A booster-type fixed-length plastic pipe fitting forming machine comprises a plastic melting device 100 and a pipe fitting forming device 200, wherein the plastic melting device 100 is used for sequentially heating and melting plastic raw materials, filtering impurities and then conveying molten plastic into the pipe fitting forming device 200, and the pipe fitting forming device 200 is used for receiving the molten plastic and forming the molten plastic into a pipe fitting shape meeting requirements.

The plastic melting apparatus 100 includes a main frame body, on which a melting mechanism 110 for heating and melting plastic raw materials and filtering impurities, and a conveying mechanism 120 for receiving and conveying molten plastic to the pipe forming apparatus 200 are mounted.

The melting mechanism 110 comprises a melting tank 111 and an impurity filtering component, wherein the melting tank 111 is vertically fixed on the main frame body, and the melting tank 111 is used for heating and melting plastic raw materials and enabling the plastic to be in a molten state structure finally; the melting pot 111 is a conventional plastic melting technique and will not be described in detail herein.

The impurity filtering component is used for filtering impurities of molten plastics, and comprises an impurity discharging pipeline 112 and a packing auger 113, wherein the impurity discharging pipeline 112 is of a circular pipeline structure which is obliquely arranged, the impurity discharging pipeline 112 is fixed on the main frame body, a first closed end cover is installed at a lower pipe opening of the impurity discharging pipeline 112 in a matching mode, and a second closed end cover is installed at an upper pipe opening of the impurity discharging pipeline 112 in a matching mode.

The outer circular surface of the impurity discharge pipeline 112 is connected and communicated with vertical connecting nozzles which are vertically arranged and close to the first closed end cover, the vertical connecting nozzles are provided with two groups of vertical connecting nozzles 1121 and 1122 which are respectively positioned above the impurity discharge pipeline 112 and below the impurity discharge pipeline 112, the two groups of vertical connecting nozzles are coaxially arranged, a metal filter screen used for blocking impurities in molten plastic from passing through is arranged at a communicating position between the vertical connecting nozzles 1122 and the impurity discharge pipeline 112 in a matching mode, and the vertical connecting nozzles 1121 and the melting tank body 111 are connected and communicated.

The outer circle surface of the impurity discharging pipeline 112 is communicated with an impurity discharging connector 1123, the impurity discharging connector 1123 is close to the second closed end cover, the impurity discharging connector 1123 is positioned below the impurity discharging pipeline 112, and an impurity collecting tray 114 positioned right below the impurity discharging connector 1123 is further arranged on the main frame body.

The coaxial wear-to-establish hole that runs through its thickness of offering of blind end cover one, auger 113 and arrange and be coaxial between the miscellaneous pipeline 112 and arrange, swing joint between auger 113's output and the blind end two, auger 113's input passes row miscellaneous pipeline 112 in proper order, set up in the wear-to-establish hole of blind end cover one and lie in row miscellaneous pipeline 112's below, auger 113 can rotate around self axial and auger 113 rotates and can pull impurity and to arrange miscellaneous connector 1123 direction and carry, auger 113's helicoid uniform spacing has seted up a plurality of groups and has run through its thickness and be used for the flow hole that the molten state plastics passed through.

The plastic raw material is heated and melted in the melting tank body 111 to be molten and then flows into the impurity removing pipeline 112 through the first vertical connecting nozzle 1121, then the molten plastic sequentially passes through the flow hole formed in the spiral surface of the packing auger 113, the metal filter screen and the second vertical connecting nozzle 1122 to continuously flow downwards, impurities in the molten plastic can be stopped and remained on the metal filter screen, meanwhile, the packing auger 113 can rotate around the axial direction of the packing auger 113 and drag the impurities to be conveyed towards the impurity removing connecting nozzle 1123, the impurities can fall into the impurity collecting disc 114 through the impurity removing connecting nozzle 1123, and in the process, the impurities on the metal filter screen can be conveyed and discharged by the packing auger 113 all the time, so that the metal filter screen does not need to be frequently replaced and removed, and the impurity removing process.

The conveying mechanism 120 is located right below the melting mechanism 110, the conveying mechanism 120 comprises a conveying pipeline 121, a material pushing screw 122 and a conveying motor 124, the conveying pipeline 121 is a horizontally arranged circular pipeline structure, the conveying pipeline 121 is fixed on the main frame body, a third closed end cover is installed at a pipe orifice of the conveying pipeline 121 in a matching mode, a connecting support is arranged at the other pipe orifice in a matching mode, a connecting nozzle 1211 is connected and communicated with the outer circular surface of the conveying pipeline 121, the connecting nozzle 1211 is located above the conveying pipeline 121 and is close to the third closed end cover, and the connecting nozzle 1211 is connected and communicated with the second vertical connecting nozzle 1122.

The pushing screw 122 and the conveying pipeline 121 are coaxially arranged, a protruding hole penetrating through the thickness of the closed end cover is coaxially formed in the closed end cover, the output end of the pushing screw 122 is movably connected with the connecting support, the input end of the pushing screw 122 sequentially penetrates through the conveying pipeline 121, is arranged in the protruding hole of the closed end cover and is located outside the conveying pipeline 121, and the pushing screw 122 can axially rotate around itself and can pull molten plastic to convey the molten plastic to the direction of the pipe orifice of the conveying pipeline 121 provided with the connecting support.

The axial direction of the output shaft of the conveying motor 124 is parallel to the axial direction of the conveying pipeline 121, the conveying motor 124 is fixed on the main frame body, a first power transmission piece 125 is arranged between the power output end of the conveying motor 124 and the input end of the pushing screw 122 and is in power connection transmission through the first power transmission piece 125, a second power transmission piece 130 is arranged between the input end of the pushing screw 122 and the input end of the packing auger 113 and is in power connection transmission through the second power transmission piece 130, specifically, the first power transmission piece 125 is a belt transmission mechanism, and the second power transmission piece 130 is a bevel gear transmission mechanism.

Preferably, in order to avoid the solidification and blockage phenomenon when the molten plastic flows in the conveying pipe 121, a first heating element 123 for heating the conveying pipe 121 and keeping the plastic in a molten state is installed outside the conveying pipe 121 in a matching manner.

The molten plastic flows into the conveying pipeline 121 through the vertical connecting nozzle 1122 and the connecting nozzle 1211, meanwhile, the conveying motor 124 drives the pushing screw 122 to rotate axially, the pushing screw 122 rotates and can pull the molten plastic to convey towards the pipe orifice of the conveying pipeline 121, which is provided with the connecting support, in the conveying process, the plastic is always kept in the molten state due to the heating element 123, and the conveying process is more stable and smooth.

The pipe forming device 200 includes a raw material feeding mechanism 210, a pipe forming mechanism 220, and a pipe cutting mechanism 230, wherein the raw material feeding mechanism 210 is configured to receive the molten plastic conveyed by the conveying mechanism 120 and convey the molten plastic to the pipe forming mechanism 220, the pipe forming mechanism 220 is configured to form the molten plastic into a circular pipe structure, and the pipe cutting mechanism 230 is configured to cut the formed circular pipe into pipe segments having a length meeting a requirement.

The raw material feeding mechanism 210 comprises a connecting pipeline 211, a feeding pipeline 215 and a feeding piece, wherein the feeding pipeline 215 is horizontally fixed on the main frame body, the feeding pipeline 215 is positioned below the conveying pipeline 121, one pipe orifice of the feeding pipeline 215 is provided with a fixed end cover in a matching way, the other pipe orifice is provided with a fastening support in a matching way, the outer circular surface of the feeding pipeline 215 is also connected and communicated with a communicating nozzle 2151, the communicating nozzle 2151 is positioned right above the feeding pipeline 215, and the fixed end cover is coaxially provided with an avoiding hole penetrating through the thickness of the fixed end cover.

One end of the connecting pipeline 211 is fixedly connected and communicated with the pipe orifice of the conveying pipeline 121 provided with the connecting support, and the other end of the connecting pipeline 211 is fixedly connected and communicated with the connecting nozzle 2151.

The feeding piece comprises a feeding screw rod 216, a feeding motor 217 and a pushing plug 218, an output shaft of the feeding motor 217 and the feeding screw rod 216 are coaxially arranged with the feeding pipeline 215, an output end of the feeding screw rod 216 is movably connected with the fastening bracket, and an input end of the feeding screw rod passes through the feeding pipeline 215 and an avoiding hole arranged on the fixed end cover and is positioned outside the feeding pipeline 215.

The feeding motor 217 is fixed on the main frame body, a coupler is arranged between the power output end of the feeding motor 217 and the input end of the feeding screw rod 216, and the power output end and the input end are in power connection transmission through the coupler.

The pushing plug 218 is a circular piston structure matched with the inner cavity of the feeding pipe 215, the pushing plug 218 is located in the feeding pipe 215 and forms sealed sliding guide fit between the feeding pipe 215 and the pushing plug 218, the pushing plug 218 is further coaxially installed outside the feeding screw rod 216 through a nut, the initial position of the pushing plug 218 is close to a fixed end cover, and the feeding screw rod 216 rotates around the axial direction of the feeding screw rod 216 and can pull the pushing plug 218 to displace along the axial direction of the feeding screw rod 216.

Preferably, in order to avoid clogging due to semi-solidification of the molten plastic during its transit in the feeding duct 215, the outside of said feeding duct 215 is fitted with a second heating element 219.

Molten plastic flows into the feeding pipe 215 through the connecting pipe 211 and the connecting nozzle 2151, meanwhile, the feeding motor 217 operates and drives the feeding screw rod 216 to rotate around the axial direction of the feeding screw rod 216, the feeding screw rod 216 rotates around the axial direction of the feeding screw rod 216 and can pull the pushing plug 218 to displace along the axial direction of the feeding screw rod 216, and therefore reciprocating motion of the pushing plug 218 which is close to a pipe orifice of the feeding pipe 215 and then far from the pipe orifice of the feeding pipe 215 provided with the fastening support can be achieved through presetting of an operation program of the feeding motor 217, and therefore the molten plastic is pulled to be pushed towards the pipe orifice of the feeding pipe 215 provided.

More specifically, in the process of pushing the molten plastic by the push plug 218 in a reciprocating manner, the push plug 218 plugs the nozzle 2151, and in the plugging process, the molten plastic cannot flow into the feeding pipe 215, and meanwhile, the pushing screw 122 continuously rotates and pulls the molten plastic to be conveyed into the connecting pipe 211, so that the molten plastic in the connecting pipe 211 is too much to cause a high pressure phenomenon, and a large pressure is generated on the connecting pipe 211, the pushing screw 122 and the conveying pipe 121, and in order to solve the problem, the connecting pipe 211 is provided with a pressure relief piece for relieving the pressure of the molten plastic in the connecting pipe 211 in the process of plugging the nozzle 2151 by the push plug 218.

The pressure relief piece comprises a pressure relief pipeline 212, a pressure relief plug 213 and a pressure relief spring 214, the pressure relief pipeline 212 is a circular pipeline structure with one open end and one closed end, the pressure relief pipeline 212 is horizontally fixed on the main frame body, and the open end of the pressure relief pipeline 212 is communicated with the connecting pipeline 211 in an interconnecting mode.

The pressure relief plug 213 is a circular piston structure matched with the inner cavity of the pressure relief pipeline 212, and the pressure relief plug 213 is positioned in the pressure relief pipeline 212 and forms a sealed sliding guide fit between the pressure relief pipeline 212 and the pressure relief plug.

One end of the pressure relief spring 214 is fixedly connected with the cavity bottom of the pressure relief pipeline 212, the other end of the pressure relief spring 214 is fixedly connected with the pressure relief plug 213, the elastic force of the pressure relief spring 214 drives the pressure relief plug 213 to move away from the cavity bottom of the pressure relief pipeline 212, and the initial position of the pressure relief plug 213 is located at the connection position between the pressure relief pipeline 212 and the connecting pipeline 211.

When the push plug 218 closes the connection nozzle 2151, the molten plastic is gathered in the connection pipe 211 and pushes the pressure relief plug 213 to seat close to the bottom of the cavity of the pressure relief pipe 212, the pressure relief spring 214 is in a compressed state, so that the purpose of relieving the pressure of the molten plastic in the connection pipe 211 is achieved, when the push plug 218 cancels to block the connection nozzle 2151, the elastic force of the pressure relief spring 214 enables the pressure relief plug 213 to move away from the bottom of the cavity of the pressure relief pipe 212, the pressure relief plug 213 recovers to the initial position, and the molten plastic can smoothly flow into the feeding pipe 215 through the connection nozzle 2151.

Pipe fitting forming mechanism 220 include the outer mould body 221, interior mould core 222, the water-cooling pipeline, the outer mould body 221 is both ends opening and with the pipeline structure of feeding pipe 215 coaxial arrangement, the outer mould body 221 can be divided into two parts along self axial and be the receiving section respectively, the shaping section, the receiving section is the round platform structure, the shaping section is the cylinder structure, the main aspects of receiving section and the mouth of pipe that feeding pipe 215 is provided with the fastening support are connected between and are put through, connect the put through between the main aspects of receiving section and the shaping section.

The inner mold core 222 is a circular cylinder structure with an open end and a closed end, the inner mold core 222 is coaxially located in the outer mold body 221, the closed end of the inner mold core 222 faces the large end of the circular truncated cone section of the outer mold body 221, and the open end of the inner mold core 222 penetrates through the cylindrical section of the outer mold body 221 and is located outside the outer mold body 221.

The water-cooling pipeline comprises a first water inlet pipeline 223, a second water inlet pipeline 224, an inner wall cooling water pipe 225 and an outer wall cooling water pipe 226, the first water inlet pipeline 223 is of a closed circular ring-shaped pipeline structure, the first water inlet pipeline 223 is fixed on the main frame body, the first water inlet pipeline 223 coaxially surrounds the outer portion of the outer mold body 221, one end of the second water inlet pipeline 224 is connected and communicated with external water supply equipment, and the other end of the second water inlet pipeline 224 is connected and communicated with the first water inlet pipeline 223.

One end of the inner wall cooling water pipe 225 is connected and communicated with the first water inlet pipe 223, the other end of the inner wall cooling water pipe 225 penetrates through the outer die body 221 and is fixedly connected and communicated with the inner die core 222, and a plurality of groups of inner wall cooling water pipes 225 are arranged in an array mode along the circumferential direction of the inner die core 222.

The outer mould 221 is characterized in that a spraying cylinder with a circular shell structure with two closed ends and an inner cavity is coaxially arranged at the free end of the cylindrical section, a plurality of groups of spraying holes penetrating through the thickness of the spraying cylinder are uniformly arranged on the inner annular surface of the spraying cylinder at intervals, one end of an outer wall cooling water pipe 226 is connected and communicated with a water inlet pipeline 223, the other end of the outer wall cooling water pipe is connected and communicated with the spraying cylinder, and the outer wall cooling water pipe 226 is provided with a plurality of groups in an array mode along the circumferential direction of the spraying cylinder.

When the molten plastic passes through the inner wall cooling water pipe 225, the plastic is in a flowing molten state, so that the inner wall cooling water pipe 225 does not cause adverse effects on the flowing of the molten plastic, then in the process that the molten plastic is output towards the free end of the cylindrical section of the outer mold body 221, cooling water provided by external water supply equipment flows into the inner mold core 222 through the water inlet pipeline I223, the water inlet pipeline II 224 and the inner wall cooling water pipe 225, so that the molten plastic is converted into a solidification state, and when the initially solidified and formed circular pipe fitting is output outwards through the free end of the cylindrical section of the outer mold body 221, the cooling water is sprayed onto the outer wall of the pipe fitting through the outer wall cooling water pipe 226, the spray cylinder and the spray holes, so that the pipe fitting is cooled rapidly;

in addition, the cooling water sprayed to the outer wall of the pipe fitting flows out from the gap between the spraying cylinder and the outer wall of the formed pipe fitting, and the water in the inner mold core 222 flows out through the opening at the free end of the formed pipe fitting.

The pipe cutting mechanism 230 is located on a side of the pipe forming mechanism 220 facing away from the feeding pipe 215, the pipe cutting mechanism 230 includes a synchronous displacement pipe 2310 and a pipe cutting member 2320, the pipe cutting member 2320 is used for performing fixed-length cutting processing on the circular pipe after the cooling forming output, and the synchronous displacement member 2310 is used for keeping the pipe cutting member 2320 and the circular pipe which is continuously output in a relatively static state.

The synchronous displacement member 2310 comprises a fixing support 2311, a baffle 2312, a sliding rod 2314, a return spring 2315, a mounting support 2316 and a guide plate 2317, the fixing support 2311 is fixedly connected with the main frame body, the extending direction of the sliding rod 2314 is parallel to the axial direction of the inner mold core 222, the sliding rod 2314 is movably mounted on the fixing support 2311 and forms sliding guide fit between the fixing support and the inner mold core 222, the end part of the sliding rod 2314 facing the inner mold core 222 is provided with abutting steps, and two groups of sliding rods 2314 are arranged.

The reset springs 2315 are sleeved outside the slide bar 2314, two groups of reset springs 2315 are correspondingly arranged, one end of each reset spring 2315 is abutted against the abutting step, the other end of each reset spring 2311 is abutted against the fixing support 2311, and the slide bar 2314 is driven by the elastic force of each reset spring 2315 to move close to the inner mold core 222.

The large surface of the baffle 2312 is perpendicular to the extending direction of the sliding rod 2314, the baffle 2312 is fixed at the end of the sliding rod 2314, which is away from the inner die core 222, the baffle 2312 can be contacted with the round pipe which is cooled and formed and is continuously output outwards, and an inductor 2313 for inducing whether the round pipe is contacted with the baffle 2312 or not is arranged on the baffle 2312.

The mounting bracket 2316 is fixedly mounted outside the sliding rod 2314, the sliding rod 2314 moves and pulls the mounting bracket 2316 to move synchronously, the pipe cutting member 2320 is mounted on the mounting bracket 2316, and the mounting bracket 2316 moves and pulls the pipe cutting member 2320 to move synchronously.

The guide plate 2317 is obliquely fixed on the fixing bracket 2311, and the highest point of the guide plate 2317 is positioned right below the circular pipe which is cooled, formed and continuously output outwards.

The pipe cutting member 2320 comprises a driving motor 2321, a mounting shaft 2322, a supporting frame 2324, a cutting motor 2325 and a cutting cutter wheel 2326, the axial directions of the output shaft of the driving motor 2321 and the mounting shaft 2322 are both parallel to the extending direction of the sliding rod 2314, the driving motor 2321 is fixed on the mounting frame 2316, the mounting shaft 2322 is movably mounted on the mounting frame 2316 and can rotate around the axial direction of the mounting shaft, the supporting frame 2324 is fixed outside the mounting shaft 2322, and the mounting shaft 2322 rotates and pulls the supporting frame 2324 to rotate synchronously.

A third power transmission member 2323 is arranged between the power output end of the driving motor 2321 and the mounting shaft 2322, and power connection transmission is performed between the third power transmission member 2323 and the third power transmission member 2323, specifically, the third power transmission member 2323 is a belt transmission structure.

The axial directions of the output shaft of the cutting motor 2325 and the cutting knife wheel 2326 are both parallel to the extending direction of the sliding rod 2314, the cutting motor 2325 is fixed on the supporting frame 2324, the cutting knife wheel 2326 is movably mounted on the supporting frame 2324 and can rotate around the axial direction of the cutting motor, a power transmission member four 2327 is arranged between the power output end of the cutting motor 2325 and the cutting knife wheel 2326, power connection transmission is performed between the power output end of the cutting motor 2325 and the cutting knife wheel 2326 through the power transmission member four 2327, and specifically, the power transmission member four 2327 is of a belt transmission structure.

The distance between the cutting knife wheel 2326 and the baffle 2312 is equal to the length of the pipe fitting meeting the production requirement.

The round pipe fitting after water-cooling forming by the pipe fitting forming mechanism 220 continues to be output outwards, when the free end of the round pipe fitting contacts the baffle 2312, the inductor 1313 transmits a signal to the pipe fitting cutting member 2320, then the driving motor 2321 and the cutting motor 2325 both start to operate, the driving motor 2321 and the cutting motor 2325 are matched and drive the cutting knife wheel 2326 to cut the round pipe fitting, after cutting, the driving motor 2321 and the cutting motor 2325 both operate reversely, so that the pipe fitting cutting member 2320 is restored to an original shape, and the length of the cut pipe fitting meets the production requirement and is guided to be output through the guide plate 2317;

in addition, in the cutting process, the circular pipe can be continuously output outwards, so that the baffle 2312 is pushed to move away from the pipe forming mechanism 220, the baffle 2312 moves and pulls the sliding rod 2314, the mounting bracket 2316 and the pipe cutting member 2320 to synchronously move, the cutting knife wheel 2326 and the circular pipe are in a relatively static state, the cutting surface of the circular pipe is smooth and flat, and the quality is better.

Preferably, in order to avoid that the cooling water in the inner mold core 222 cannot smoothly flow out due to the contact between the molding pipe and the baffle 2312, the baffle 2312 is provided with a water outlet hole coaxially arranged with the inner mold core 222.