Pin machine barrel

Abstract

The pin machine barrel comprises a machine barrel body, N groups of pin connecting holes are distributed in the inner wall of the machine barrel body, the N groups of pin connecting holes are distributed at equal intervals in the axial direction of the machine barrel, and the pin connecting holes in each group of pin connecting holes are distributed along the circumference of the inner wall of the machine barrel body. Each pin connecting hole is connected with a corresponding pin, and N is a natural number larger than 3. Compared with the prior art, the machine barrel has the advantages that the color mixing function is transferred to the machine barrel, the manufacturing difficulty of the screw is reduced, the pins are regularly distributed on the inner wall of the machine barrel body, and the manufacturing difficulty is slightly increased, so that the overall manufacturing difficulty of the whole injection molding machine is reduced; the pin is arranged on the machine barrel, the requirement for the appearance of the screw is lowered, an injection molding machine can be matched with screws with more screw flight types, the pin on the machine barrel body can be disassembled and assembled, and the pin can be designed into different structures to meet the overall color mixing and stirring function.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of injection molding machine cylinder technical field, especially to a kind of pin barrel that can be used for material mixing processing. BACKGROUND

[0002] A kind of cold feeding extruder for high molecular material continuous vacuum mixing is disclosed in a kind of Chinese invention patent application with the name of "a kind of feeding extruder for high molecular material continuous vacuum mixing" with the application number CN202410609200.0, including driving part and reduction gearbox, screw connected in the power output end of reduction gearbox, and the sleeve set in the outer side of screw;Material mixing space is defined between material sleeve and screw. Material sleeve includes feeding module, plasticizing module, vacuumizing module and extrusion module connected in sequence, and a plurality of pins are provided on extrusion module, which are uniformly distributed from the outside to the inside of the circumference, and the outside of the pin is provided with a correction device. The correction device can correct when the pin is bent, and can automatically adjust the distance between the pin and the screw according to the bending force. Temperature adjusting device is also provided outside the extrusion module, which includes temperature guide pipe and temperature adjusting part. The temperature guide pipe penetrates the extrusion module and is connected in the correction device. The present application can reduce the production difficulty of screw by setting the screw as a plurality of split rods connected end to end, and can avoid serious wear of screw and pin, and improve the service life of the extruder. However, the feeding extruder sets the stirring pin on the screw, which affects the manufacture of the original screw rib of the screw, increases the manufacturing difficulty of the screw, and the structure still needs to be improved. Therefore, the structure of the feeding extruder needs to be further improved. SUMMARY

[0003] The technical problem to be solved by the utility model is to provide a pin barrel that can set stirring screws on the inner wall of the cylinder and has good material mixing effect.

[0004] The technical scheme adopted by the utility model to solve the above technical problem is as follows: the pin barrel includes a cylinder body, characterized in that: a plurality of pin connecting holes are distributed on the inner wall of the cylinder body, the pin connecting holes are divided into N groups, the pin connecting holes in each group are arranged along the circumference of the inner wall of the cylinder body, each pin connecting hole is connected with a corresponding pin, and N is a natural number greater than 3.

[0005] As an improvement, the pin connecting hole can be a threaded hole, and the corresponding pin can be screwed into the pin connecting hole.

[0006] Further improvement, the pin connecting hole can be a stepped hole with a smaller diameter at the lower end than at the upper end, and a sink groove is arranged at the opening of the pin connecting hole on the outer wall of the cylinder to facilitate the machining of the pin connecting hole.

[0007] As an improvement, a side wall positioning hole can be preferably arranged on the outer wall of the barrel body between the middle part of the barrel body and the two groups of pin connecting holes.

[0008] As an improvement, oil grooves that can be penetrated by mold temperature oil can be preferably arranged on the side wall of the barrel body in a spaced distribution, and the oil grooves axially penetrate the side wall of the barrel body.

[0009] Further improvement, a positioning groove that can be fitted with a ring-shaped cover plate can be preferably arranged on the end face of the barrel body, and the oil groove is a through hole opened on the bottom surface of the positioning groove.

[0010] Further improvement, a communication groove that communicates the openings of adjacent oil grooves can be preferably arranged on the bottom surface of the positioning groove.

[0011] Further improvement, a connecting flange can be preferably fixed on each end of the barrel body, a communication recess is arranged on the inner wall of the connecting flange, a side wall through hole that communicates with the communication recess is arranged on the side wall of the oil groove, and a water through hole that communicates with the communication recess is arranged on the side wall of the connecting flange.

[0012] Further improvement, a positioning recess can be preferably arranged on the end of the connecting flange.

[0013] Further improvement, an end face positioning hole can be preferably arranged on the bottom surface of the positioning groove.

[0014] Compared with the prior art, the advantages of the utility model lie in that the barrel body is accompanied by a whole circle of pin connecting holes, breaking the conventional logic, transferring the color mixing function to the barrel, and relying on the screw rod to meet the non-color mixing function, reducing the difficulty of manufacturing the screw rod, and the pin is regularly distributed on the inner wall of the barrel body, so that the manufacturing difficulty is increased little, thereby the overall manufacturing difficulty of the injection molding machine is reduced; the pin is arranged on the barrel, the shape requirement of the screw rod is reduced, the injection molding machine can adapt to more types of screw rods, and the pin on the barrel body can be disassembled, different structures of the pin can be designed to meet the overall color mixing and stirring function. The barrel body is also designed with an oil groove, so that the mold temperature oil can be used to maintain the temperature of the melt during material forming, so that the barrel body obtains shear heat, and the mold temperature oil is used to make the melt mixing more compact and the discharge effect better. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a perspective view of the embodiment of the utility model;

[0016] Figure 2 It is Figure 1 It is a perspective view from another angle;

[0017] Figure 3 It is Figure 1 It is a side projection view;

[0018] Figure 4 is Figure 3 a sectional view along line A-A in

[0019] Figure 5 is Figure 3 a sectional view along line B-B in

[0020] Figure 6 is Figure 1 a front projection view of

[0021] Figure 7 is Figure 6 a sectional view along line C-C in

[0022] Figure 8 is Figure 6 a sectional view along line D-D in

[0023] Figure 9 is Figure 1 a structural exploded view of DETAILED DESCRIPTION

[0024] The utility model will be described in further detail below in combination with the drawings.

[0025] As Figures 1 to 9 shown, the pin barrel of the present embodiment comprises a barrel body 1, pin connecting holes 11 are distributed on the inner wall of the barrel body 1, the pin connecting holes 11 are in N groups, the pin connecting holes 11 in the N groups are equally spaced along the barrel axis, the pin connecting holes 11 in each group are arranged along the inner wall circumference of the barrel body 1, each pin connecting hole 11 is connected with a corresponding pin, and N is a natural number greater than 3. There are 8 pin connecting holes in each group, and the 8 pin connecting holes are equally spaced along the inner wall circumference of the barrel body. The pin connecting hole 11 is a threaded hole, and the corresponding pin is screwed on the pin connecting hole 11. The pin connecting hole 11 is a stepped hole with a larger diameter at the upper end and a smaller diameter at the lower end, and a sink groove that facilitates the machining of the pin connecting hole 11 is arranged at the opening of the pin connecting hole on the outer wall of the barrel. A side wall positioning hole 12 is arranged on the outer wall of the barrel body 1 between the two groups of pin connecting holes 11.

[0026] Oil grooves 13 that can pass in mold temperature oil are equally spaced on the side wall of the barrel body 1, and the oil grooves 13 axially penetrate the side wall of the barrel body 1. A positioning groove 14 that can fit a ring-shaped cover plate is arranged on the end face of the barrel body 1, and the oil groove 13 is a through hole opened on the bottom surface of the positioning groove. A communication groove 15 that communicates the openings of adjacent oil grooves is arranged on the bottom surface of the positioning groove 14.

[0027] The connecting flanges 2 are fixed at both ends of the barrel body 1, and the inner wall of the connecting flanges 2 is provided with a communicating recess 21. The side wall of the oil groove 13 is provided with a side wall through hole 131 which communicates with the communicating recess 21. The side wall of the connecting flange 2 is provided with a water through hole 22 which communicates with the communicating recess 21. The end of the connecting flange 2 is provided with a positioning recess 23. The bottom surface of the positioning groove 14 is provided with an end surface positioning hole 141.

Claims

1. A pin barrel comprising a barrel body (1) characterised in that: The inner wall of the barrel body (1) is provided with pin connection holes (11), the pin connection holes (11) are N groups, the N groups of pin connection holes (11) are equally spaced along the barrel axis, the pin connection holes (11) in each group of pin connection holes (11) are arranged along the inner wall circumference of the barrel body (1), each pin connection hole (11) is connected with a corresponding pin, and N is a natural number greater than 3.

2. The pin barrel of claim 1, wherein: The pin connection hole (11) is a threaded hole, and the corresponding pin is screwed on the pin connection hole (11).

3. The pin barrel of claim 2, wherein: The pin connection hole (11) is a stepped hole with a smaller diameter at the lower end, and a sink groove is arranged at the opening of the pin connection hole (11) on the outer wall of the barrel to facilitate the machining of the pin connection hole (11).

4. The pin barrel of any one of claims 1 to 3, wherein: A side wall positioning hole (12) is arranged on the outer wall of the barrel body (1) between the two groups of pin connection holes (11).

5. The pin barrel of any one of claims 1 to 3, wherein: Oil grooves (13) that can pass into mold temperature oil are arranged on the side wall of the barrel body (1) at intervals, and the oil grooves (13) axially penetrate the side wall of the barrel body (1).

6. The pin barrel of claim 5, wherein: A positioning groove (14) that can fit a ring-shaped cover plate is arranged on the end face of the barrel body (1), and the oil groove (13) is a through hole opened on the bottom surface of the positioning groove.

7. The pin barrel of claim 6, wherein: A communication groove (15) is arranged on the bottom surface of the positioning groove (14) to communicate the openings of adjacent oil grooves.

8. The pin barrel of claim 7, wherein: A connecting flange (2) is fixed at each end of the barrel body (1), a communication recess (21) is arranged on the inner wall of the connecting flange (2), a side wall through hole (131) is arranged on the side wall of the oil groove (13) to communicate with the communication recess (21), a water through hole (22) is arranged on the side wall of the connecting flange (2), and the water through hole (22) communicates with the communication recess (21).

9. The pin barrel of claim 8, wherein: A positioning recess (23) is arranged at the end of the connecting flange (2).

10. The pin barrel of claim 6, wherein: An end face positioning hole (141) is arranged on the bottom surface of the positioning groove (14).

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