Pneumatic pipe extrusion mechanism

Abstract

The utility model discloses a pneumatic pipe extrusion mechanism, including frame, extrusion pipe subassembly and stirring stock bin, the extrusion pipe subassembly includes drive mechanism, extrusion pipe body and extrusion mould, the extrusion pipe body is installed on the frame, the extrusion pipe body is equipped with the extrusion cavity, the extrusion cavity is equipped with the rotation shaft, the rotation shaft is equipped with the stirring stock bin, and the stirring stock bin is equipped with the stirring stock bin. An extrusion cavity is formed in the extrusion pipe body, an extrusion screw is arranged on the rotating shaft, the driving mechanism is installed on the rack and connected with the rotating shaft, and the extrusion die is installed at the end of the extrusion pipe body and communicated with the extrusion cavity; the extrusion pipe body is further provided with an extrusion pipe feeding port, and the extrusion pipe feeding port is communicated with the extrusion cavity. The stirring stock bin is installed above the extrusion pipe assembly through a first support, a first feeding port is formed in the top of the stirring stock bin, a first discharging port is formed in the bottom of the stirring stock bin, a good feeding effect is achieved, the occupied area is small, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a pneumatic tube extrusion mechanism, belonging to the technical field of pneumatic tube production equipment. Background Art

[0002] Pneumatic tubes are flexible tubing widely used in industries such as industrial automation, automotive, and medical equipment. Traditional pneumatic tube production methods typically include extrusion, drawing, and winding. Extrusion is a key step in the entire production process, directly impacting the quality, production efficiency, and cost of pneumatic tubes. Traditional extrusion mechanisms often lack efficient management of raw material delivery, which can lead to problems such as blockage, stratification, and air intrusion during transportation. These issues negatively impact the quality of the final product. A search revealed that Chinese patent publication number CN211307325U discloses a pneumatic tube extrusion mechanism. In this patent, the extrusion material is placed in an extrusion tube body and heated until it reaches the desired extrusion temperature. A drive motor is then activated, rotating the rotary shaft, which in turn drives the extrusion screw. The extrusion screw propels the heated and softened material forward and out through the extrusion port of the outer tube. A guide plate guides the extruded material smoothly toward the outer tube, where it forms the desired tubular product through the inner cavity of the outer tube. Furthermore, the collinear arrangement of the inner rod, connecting rod, and rotary shaft ensures linearity and stability during the extrusion process. However, in this patent, the raw materials are directly transported into the pipe body and kept warm by the heating pipe. The stirring operation and the extrusion operation before the raw materials are put into the pipe body are carried out separately, which is time-consuming, labor-intensive and inefficient. Summary of the Invention

[0003] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a pneumatic tube extrusion mechanism, which has good feeding effect, occupies a small area and improves production efficiency.

[0004] In order to solve the above technical problems, the technical solution of the utility model is: a pneumatic tube extrusion mechanism, comprising:

[0005] frame;

[0006] An extrusion tube assembly, comprising a drive mechanism, an extrusion tube body, and an extrusion die, wherein the extrusion tube body is mounted on the frame, an extrusion cavity is provided in the extrusion tube body, a rotating shaft is provided in the extrusion cavity, an extrusion screw is provided on the rotating shaft, the drive mechanism is mounted on the frame, the drive mechanism is connected to the rotating shaft, and the extrusion die is mounted at the end of the extrusion tube body and communicates with the extrusion cavity;

[0007] The extrusion tube body is further provided with an extrusion tube feed port, and the extrusion tube feed port is communicated with the extrusion cavity;

[0008] A stirring silo, the stirring silo is installed above the extrusion tube assembly through a first bracket, a first feed port is provided at the top of the stirring silo, a first discharge port is provided at the bottom of the stirring silo, a stirring cavity is provided in the stirring silo, and the first feed port and the first discharge port are both in communication with the stirring cavity;

[0009] The first discharge port corresponds to the feed port of the extrusion tube, and the stirring silo is suitable for stirring the raw materials uniformly through the stirring mechanism and conveying them into the extrusion cavity;

[0010] The driving mechanism is adapted to drive the rotating shaft to rotate so as to cause the extrusion screw to rotate in the extrusion cavity so as to push the raw material in the extrusion cavity forward and extrude it from the extrusion die;

[0011] The extruded pneumatic tube is pulled by an external winding device and wound.

[0012] Furthermore, a feed hopper is provided at the feed port of the extrusion tube, and the feed hopper is provided with a feed slope suitable for guiding the raw materials into the extrusion cavity.

[0013] Furthermore, in order to control the flow rate and extrusion rate of the raw material, a solenoid valve suitable for controlling the opening and closing of the first discharge port is provided at the first discharge port.

[0014] Furthermore, in order to prevent dust or other impurities from entering the mixing silo, a cover plate is hinged at the first feed port, and a handle for easy gripping is provided on the cover plate.

[0015] Furthermore, in order to ensure that the raw materials are fully mixed before entering the extrusion chamber, the stirring mechanism includes a stirring bracket, a stirring motor and a stirring shaft, the stirring bracket is installed on the first bracket, the stirring motor is installed on the stirring bracket, the stirring shaft is connected to the movable end of the stirring motor, the stirring shaft is arranged in the stirring material chamber, and the stirring shaft is provided with stirring blades.

[0016] Furthermore, the driving mechanism includes a driving motor and a driving box, the driving motor is connected to the driving box through a synchronization component, the driving box is provided with a driving component, the driving component includes a driving gear and a driven gear, the axes of the driving gear and the driven gear are staggered, and the driven gear is connected to the rotating shaft.

[0017] Furthermore, the synchronization assembly includes a main synchronization wheel, a slave synchronization wheel and a synchronization belt, the main synchronization wheel is connected to the active end of the drive motor, the slave synchronization wheel is installed on the outside of the drive box and is coaxially arranged with the driving gear, and the synchronization belt is suitable for connecting the main synchronization wheel and the slave synchronization wheel.

[0018] Furthermore, in order to achieve automatic cutting, the pneumatic tube extrusion mechanism further includes a cutting mechanism, the cutting mechanism including a cutting cylinder, a cutting bracket and a cutting knife, the cutting cylinder is mounted on the cutting bracket, the cutting bracket is mounted on the frame, and the cutting knife is connected to the movable end of the cutting cylinder;

[0019] The cutting cylinder is suitable for driving the cutting knife to move downward to cut the pneumatic tube extruded by the extrusion die.

[0020] After adopting the above technical solution, the utility model has the following beneficial effects:

[0021] In the utility model, the raw materials are added to the mixing silo through the first feed port, the mixing mechanism mixes the raw materials thoroughly and evenly, and the evenly mixed raw materials enter the extrusion cavity of the extrusion tube assembly through the first discharge port and the extrusion tube feed port. The driving mechanism drives the rotating shaft to rotate, and the extrusion spiral on the rotating shaft rotates accordingly, pushing the raw materials forward and extruding them from the extrusion die. The extruded pneumatic tube is pulled and cooled by an external winding device, and is wound to form the required tubular product. After the pneumatic tube reaches a predetermined length, the cutting cylinder drives the cutting knife to cut the pneumatic tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The three-dimensional structure of the pneumatic tube extrusion mechanism of the utility model Figure 1 ;

[0023] Figure 2 The three-dimensional structure of the pneumatic tube extrusion mechanism of the utility model Figure 2 ;

[0024] Figure 3 This is a schematic diagram of the structure of the pneumatic tube extrusion mechanism of the utility model Figure 1 ;

[0025] Figure 4 This is a schematic diagram of the structure of the pneumatic tube extrusion mechanism of the utility model Figure 2 . DETAILED DESCRIPTION

[0026] In order to make the contents of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments in conjunction with the accompanying drawings.

[0027] like Figure 1-4 As shown, a pneumatic tube extrusion mechanism comprises:

[0028] Rack 1;

[0029] The extrusion tube assembly includes a drive mechanism, an extrusion tube body 21 and an extrusion die 22. The extrusion tube body 21 is mounted on the frame 1. An extrusion cavity 211 is provided in the extrusion tube body 21. A rotating shaft 212 is provided in the extrusion cavity 211. An extrusion screw is provided on the rotating shaft 212. The drive mechanism is mounted on the frame 1 and connected to the rotating shaft 212. The extrusion die 22 is mounted at the end of the extrusion tube body 21 and communicates with the extrusion cavity 211.

[0030] The extrusion tube body 21 is also provided with an extrusion tube feed port, which is communicated with the extrusion cavity 211;

[0031] A stirring silo 3 is mounted above the extrusion tube assembly via a first bracket 34. A first feed port 31 is provided at the top of the stirring silo 3, a first discharge port 32 is provided at the bottom of the stirring silo 3, and a stirring cavity 33 is provided in the stirring silo 3. Both the first feed port 31 and the first discharge port 32 are in communication with the stirring cavity 33.

[0032] The first discharge port 32 corresponds to the feed port of the extrusion tube. The mixing silo 3 is suitable for mixing the raw materials uniformly through the mixing mechanism and conveying them into the extrusion cavity 211;

[0033] The driving mechanism is adapted to drive the rotating shaft 212 to rotate so that the extrusion screw rotates in the extrusion cavity 211 to push the raw material in the extrusion cavity 211 forward and extrude it from the extrusion die 22;

[0034] The extruded pneumatic tube is pulled by an external winding device and wound.

[0035] In this embodiment, the extrusion die 22 can refer to a similar structure disclosed in a plastic extrusion die disclosed in Chinese patent publication number CN218171310U. The extrusion die 22 is suitable for extruding the raw material into the shape of the pneumatic tube required for production. This embodiment does not elaborate on its implementation principle and actual structure.

[0036] Specifically, if Figure 1-4 As shown, a feed hopper 213 is provided at the feed port of the extrusion tube, and the feed hopper 213 is provided with a feed slope suitable for guiding the raw materials into the extrusion cavity 211.

[0037] Specifically, a solenoid valve suitable for controlling the opening and closing of the first discharge port 32 is provided at the first discharge port 32 .

[0038] In this embodiment, the solenoid valve is controlled by an external control device. When the solenoid valve is opened, the raw material flows into the feed port of the extrusion tube through the first discharge port 32 and enters the extrusion cavity 211 along the feed slope of the feed hopper 213.

[0039] Specifically, if Figure 1-4As shown, a cover plate 311 is hinged at the first feed port 31, and a handle 312 for easy gripping is provided on the cover plate 311. The setting of the cover plate 311 can prevent dust or other impurities from entering the mixing silo 3 and keep the raw materials clean. The handle 312 makes it more convenient to open and close the cover plate 311, which is convenient for operators to add or clean raw materials.

[0040] Specifically, if Figure 4 As shown, the stirring mechanism includes a stirring bracket 41, a stirring motor 42 and a stirring shaft 43. The stirring bracket 41 is installed on the first bracket, the stirring motor 42 is installed on the stirring bracket 41, the stirring shaft 43 is connected to the movable end of the stirring motor 42, the stirring shaft 43 is set in the stirring material chamber 33, and a stirring blade 44 is provided on the stirring shaft 43.

[0041] Specifically, if Figure 1-4 As shown, the driving mechanism includes a driving motor 51 and a driving box 52. The driving motor 51 is connected to the driving box 52 through a synchronization component. The driving box 52 is provided with a driving component. The driving component includes a driving gear and a driven gear. The axes of the driving gear and the driven gear are staggered, and the driven gear is connected to the rotating shaft 212.

[0042] Specifically, if Figure 1-4 As shown, the synchronization assembly includes a main synchronization wheel 53, a slave synchronization wheel 54 and a synchronization belt 55. The main synchronization wheel 53 is connected to the movable end of the drive motor 51, and the slave synchronization wheel 54 is installed on the outside of the drive box 52 and is coaxially arranged with the driving gear. The synchronization belt 55 is suitable for connecting the main synchronization wheel 53 and the slave synchronization wheel 54.

[0043] In this embodiment, the driving gear and the driven gear are bevel gears. The driving motor 51 drives the main synchronous wheel 53 to rotate counterclockwise, and drives the slave synchronous wheel 54 to rotate counterclockwise through the synchronous belt 55. Since the slave synchronous wheel 54 and the driving gear are coaxially arranged, the driving gear also rotates counterclockwise. The driving gear is engaged with the driven gear, and the driving gear drives the driven gear to rotate clockwise to drive the extrusion screw to rotate and move the raw material forward.

[0044] Specifically, if Figure 1-4 As shown, the pneumatic tube extrusion mechanism further includes a cutting mechanism, which includes a cutting cylinder 61, a cutting bracket 62 and a cutting knife 63. The cutting cylinder 61 is mounted on the cutting bracket 62, and the cutting bracket 62 is mounted on the frame 1. The cutting knife 63 is connected to the movable end of the cutting cylinder 61.

[0045] The cutting cylinder 61 is suitable for driving the cutting knife 63 downward to cut the pneumatic tube extruded by the extrusion die 22.

[0046] In this embodiment, the raw materials are added to the mixing silo 3 through the first feed port 31, and the mixing mechanism mixes the raw materials thoroughly and evenly. The evenly mixed raw materials enter the extrusion cavity 211 of the extrusion tube assembly through the first discharge port 32 and the extrusion tube feed port. The driving mechanism drives the rotating shaft 212 to rotate, and the extrusion spiral on the rotating shaft 212 rotates accordingly, pushing the raw materials forward and extruding them from the extrusion die 22. The extruded pneumatic tube is pulled and cooled by an external winding equipment, and is wound to form the required tubular product. After the pneumatic tube reaches a predetermined length, the cutting cylinder 61 drives the cutting knife 63 to cut the pneumatic tube.

[0047] The specific embodiments described above further illustrate the technical problems, technical solutions and beneficial effects solved by the present invention. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A pneumatic tube extrusion mechanism, characterized in that: include: Rack (1); An extrusion tube assembly, comprising a drive mechanism, an extrusion tube body (21) and an extrusion die (22); the extrusion tube body (21) is mounted on the frame (1); an extrusion cavity (211) is provided in the extrusion tube body (21); a rotating shaft (212) is provided in the extrusion cavity (211); an extrusion screw is provided on the rotating shaft (212); the drive mechanism is mounted on the frame (1); the drive mechanism is connected to the rotating shaft (212); the extrusion die (22) is mounted at the end of the extrusion tube body (21) and is in communication with the extrusion cavity (211); The extrusion tube body (21) is further provided with an extrusion tube feed port, and the extrusion tube feed port is communicated with the extrusion cavity (211); A stirring silo (3), the stirring silo (3) is installed above the extrusion tube assembly through a first bracket (34), a first feed port (31) is provided at the top of the stirring silo (3), a first discharge port (32) is provided at the bottom of the stirring silo (3), a stirring cavity (33) is provided in the stirring silo (3), and the first feed port (31) and the first discharge port (32) are both connected to the stirring cavity (33); The first discharge port (32) corresponds to the feed port of the extrusion tube, and the stirring silo (3) is suitable for stirring the raw materials uniformly through the stirring mechanism and conveying them into the extrusion cavity (211); The driving mechanism is suitable for driving the rotating shaft (212) to rotate so that the extrusion screw rotates in the extrusion cavity (211) to push the raw material in the extrusion cavity (211) forward and extrude it from the extrusion die (22); The extruded pneumatic tube is pulled by an external winding device and wound.

2. The pneumatic tube extrusion mechanism according to claim 1, characterized in that: A feed hopper (213) is provided at the feed port of the extrusion tube, and the feed hopper (213) is provided with a feed slope suitable for guiding the raw materials into the extrusion cavity (211).

3. The pneumatic tube extrusion mechanism according to claim 1, characterized in that: A solenoid valve suitable for controlling the opening and closing of the first discharge port (32) is provided at the first discharge port (32).

4. The pneumatic tube extrusion mechanism according to claim 1, characterized in that: A cover plate (311) is hinged at the first feed port (31), and a handle (312) for easy gripping is provided on the cover plate (311).

5. The pneumatic tube extrusion mechanism according to claim 1, characterized in that: The stirring mechanism comprises a stirring bracket (41), a stirring motor (42) and a stirring shaft (43); the stirring bracket (41) is mounted on the first bracket; the stirring motor (42) is mounted on the stirring bracket (41); the stirring shaft (43) is connected to the movable end of the stirring motor (42); the stirring shaft (43) is arranged in the stirring material chamber (33); and a stirring blade (44) is provided on the stirring shaft (43).

6. The pneumatic tube extrusion mechanism according to claim 1, characterized in that: The driving mechanism comprises a driving motor (51) and a driving box (52), wherein the driving motor (51) is connected to the driving box (52) via a synchronization component, wherein the driving box (52) is provided with a driving component, wherein the driving component comprises a driving gear and a driven gear, wherein the axes of the driving gear and the driven gear are staggered, and the driven gear is connected to the rotating shaft (212).

7. The pneumatic tube extrusion mechanism according to claim 6, characterized in that: The synchronous assembly comprises a main synchronous wheel (53), a slave synchronous wheel (54) and a synchronous belt (55), wherein the main synchronous wheel (53) is connected to the movable end of the driving motor (51), the slave synchronous wheel (54) is installed outside the driving box (52) and is coaxially arranged with the driving gear, and the synchronous belt (55) is suitable for connecting the main synchronous wheel (53) and the slave synchronous wheel (54).

8. The pneumatic tube extrusion mechanism according to claim 1, characterized in that: The machine also includes a cutting mechanism, the cutting mechanism including a cutting cylinder (61), a cutting bracket (62) and a cutting knife (63), the cutting cylinder (61) is mounted on the cutting bracket (62), the cutting bracket (62) is mounted on the frame (1), and the cutting knife (63) is connected to the movable end of the cutting cylinder (61); The cutting cylinder (61) is suitable for driving the cutting knife (63) to move downward to cut the pneumatic tube extruded by the extrusion die (22).

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