Automatic pipe feeding device of shoulder injection machine

Abstract

An automatic pipe feeding device of a shoulder injection machine comprises a pipe feeding disc, an arc-shaped groove is machined in the surface of the pipe feeding disc, air suction ports are evenly distributed in the arc-shaped groove, a pipe pushing device is arranged above the pipe feeding disc, a pipe pushing head is installed on the pipe pushing device, the pipe pushing head pushes pipes in the arc-shaped groove, first installation holes are machined in the peripheries of the air suction ports, and the first installation holes are communicated with the arc-shaped groove. A pressing sleeve is installed at an opening of the first installation hole, a telescopic pin is arranged in the pressing sleeve, a rotating shaft is arranged in the upper pipe disc in a penetrating mode, an arc-shaped deep-shallow groove is machined in the rotating shaft, the tail of the telescopic pin extends into the arc-shaped deep-shallow groove, a protruding shoulder is machined on the telescopic pin, a spring is arranged between the protruding shoulder and the pressing sleeve, and the telescopic pin is sleeved with the spring. Compared with the prior art, according to the automatic pipe feeding device of the shoulder injection machine, the telescopic pin is arranged on the periphery of the air suction port, in the pipe pushing process, the telescopic pin extends out by a small section, an aluminum plastic hose is separated from the air suction port by a small distance, suction force is reduced, and resistance during pipe pushing is reduced.

Description

Technical Field

[0001] This utility model relates to the field of shoulder injection machine technology, specifically to an automatic tube feeding device for shoulder injection machines. Background Technology

[0002] The injection molding machine is used to form the tube head of aluminum-plastic packaging tubes. The injection molding machine is equipped with an automatic tube feeding device, such as the Chinese patent with publication number CN207711200U entitled "An Automatic Tube Feeding Device for a Fully Automatic Double-Head Injection Molding Machine". It includes a tube feeding disc with several air inlets. During the tube feeding process, the tube feeding disc sucks up the aluminum-plastic tube through the air inlets and then pushes the aluminum-plastic tube onto the mandrel through the tube pushing device. In order to prevent the aluminum-plastic tube from falling off, the negative pressure of the air inlet is very large. Therefore, the tube pushing device needs a lot of pushing force to push the aluminum-plastic tube, which makes the tube head part that comes into contact with the tube pushing device particularly easy to be squeezed and deformed during the tube pushing process. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an automatic tube feeding device for a shoulder injection machine, which addresses the shortcomings of the prior art.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0005] An automatic tube feeding device for a shoulder injection machine includes a tube feeding disc with an arc-shaped groove machined on its surface. Air intake ports are evenly distributed within the arc-shaped groove. A tube pushing device is positioned above the tube feeding disc, and a tube pushing head is mounted on the tube pushing device. The tube pushing head pushes the tube within the arc-shaped groove. A first mounting hole is machined around the air intake port, and a pressure sleeve is installed at the opening of the first mounting hole. A telescopic pin is installed inside the pressure sleeve. A rotating shaft passes through the tube feeding disc, and an arc-shaped deep and shallow groove is machined on the rotating shaft. The tail of the telescopic pin extends into the arc-shaped deep and shallow groove. A shoulder is machined on the telescopic pin, and a spring is installed between the shoulder and the pressure sleeve, with the spring sleeved on the telescopic pin.

[0006] Furthermore, a second mounting hole is machined above the air intake, and a limiting screw is connected inside the second mounting hole. An arc-shaped limiting groove is machined on the rotating shaft, and the end of the limiting screw is inserted into the arc-shaped limiting groove.

[0007] Furthermore, the upper tube disc is connected to two support plates at both ends, and bearing seats are installed on the support plates. The two ends of the rotating shaft are connected to the bearing seats. A motor is installed on the support plate below the upper tube disc, and the output shaft of the motor is connected to one end of the rotating shaft through a pulley and a belt.

[0008] Furthermore, the telescopic pins are arranged in the same row, and the push tube head is machined with a clearance groove to avoid the telescopic pins.

[0009] Compared with the prior art, the automatic tube feeding device for a shoulder injection machine of this utility model sets a telescopic pin around the air inlet. During the tube pushing process, the telescopic pin extends a small section, separating the aluminum-plastic hose from the air inlet by a small distance, thereby reducing the suction force and reducing the resistance during tube pushing. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model;

[0011] Figure 2 This is a sectional view of the installation of the rotating shaft and the telescopic pin of this utility model;

[0012] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0013] Figure 4 yes Figure 2 Enlarged view of point B in the middle;

[0014] Figure 5 This is a cross-sectional view of the push tube head of this utility model;

[0015] Among them, 1. upper tube coil, 2. arc-shaped groove, 3. air intake, 4. push tube cylinder, 5. push rod, 6. bridge plate, 7. push tube head, 8. pressure sleeve, 9. telescopic pin, 10. rotating shaft, 11. arc-shaped deep and shallow groove, 12. spring, 13. motor, 14. limit screw, 15. arc-shaped limit groove, 16. clearance groove. Detailed Implementation

[0016] The technical solutions in the embodiments of this utility model will be clearly and completely described below.

[0017] like Figures 1-5 As shown, an automatic tube feeding device for a shoulder injection machine includes a tube feeding disc 1. An arc-shaped groove 2 is machined on the surface of the tube feeding disc 1, which accommodates an aluminum-plastic flexible tube. A row of suction ports 3 are evenly distributed within the arc-shaped groove 2. Suction is generated at the suction ports 3, creating negative pressure to adsorb the aluminum-plastic flexible tube. A tube pushing device is installed above the tube feeding disc 1. The tube pushing device includes a tube pushing cylinder 4, with push rods 5 on both sides of the push cylinder 4. The upper end of the push rod 5 is connected to a bridge plate 6, and the piston end of the push cylinder 4 is connected to the bridge plate 6. A tube pushing head 7 is installed at the lower end of the push rod 5, pushing the tube within the arc-shaped groove 2. A first mounting hole is machined around the suction port 3, and a pressure sleeve 8 is installed at the opening of the first mounting hole. A telescopic pin 9 is installed inside the pressure sleeve 8, which can extend and retract to control the distance between the aluminum-plastic tube and the suction port 3.

[0018] In this embodiment, a rotating shaft 10 is inserted into the upper tube plate 1. An arc-shaped deep and shallow groove 11 is machined on the rotating shaft 10. The tail of the telescopic pin 9 extends into the arc-shaped deep and shallow groove 11. During the rotation of the rotating shaft 10, the arc-shaped deep and shallow groove 11 controls the extension and retraction of the telescopic pin. When the shallow part of the arc-shaped deep and shallow groove 11 contacts the telescopic pin 9, the telescopic pin 9 extends. A shoulder is machined on the telescopic pin 9. A spring 12 is provided between the shoulder and the pressure sleeve 8. The spring 12 is sleeved on the telescopic pin 9. When the deep part of the arc-shaped deep and shallow groove 11 contacts the telescopic pin 9 after the rotating shaft 10 rotates, the telescopic pin 9 retracts into the pressure sleeve 8.

[0019] The upper tube plate 1 is connected to support plates at both ends, and bearing seats are installed on the support plates. The two ends of the rotating shaft 10 are connected to the bearing seats. A motor 13 is installed on the support plate below the upper tube plate 1. The output shaft of the motor 13 is connected to one end of the rotating shaft 10 through a pulley and a belt. In this embodiment, telescopic pins 9 and rotating shafts 10 are provided on both sides of the air intake 3. The two rotating shafts 10 control the extension and retraction of the corresponding telescopic pins 9 respectively.

[0020] A second mounting hole is machined above the air intake, and a limiting screw 14 is connected inside the second mounting hole. An arc-shaped limiting groove 15 is machined on the rotating shaft 10. The end of the limiting screw 14 is inserted into the arc-shaped limiting groove 15. The arc-shaped limiting groove 15 controls the left and right rotation of the rotating shaft 10 and precisely controls the extension of the telescopic pin 9.

[0021] In this embodiment, the telescopic pins 9 are in the same row, and the push tube head 7 is machined with a relief groove 16 to avoid the telescopic pins 9. When pushing the tube, the relief groove 16 avoids the telescopic pins 9 around the air intake 3.

[0022] This utility model is not limited to the embodiments described. Those skilled in the art can still make some modifications or changes without departing from the spirit and scope of this utility model. Therefore, the scope of protection of this utility model shall be determined by the scope defined in the claims.

Claims

1. An automatic tube feeding device for a shoulder injection machine, comprising a tube feeding disc, an arc-shaped groove machined on the surface of the tube feeding disc, air intakes evenly distributed within the arc-shaped groove, a tube pushing device disposed above the tube feeding disc, a tube pushing head mounted on the tube pushing device, the tube pushing head pushing the tube within the arc-shaped groove, characterized in that: The air intake port is surrounded by a first mounting hole. A pressure sleeve is installed at the opening of the first mounting hole. A telescopic pin is installed inside the pressure sleeve. A rotating shaft is inserted into the upper tube plate. An arc-shaped deep and shallow groove is machined on the rotating shaft. The tail of the telescopic pin extends into the arc-shaped deep and shallow groove. A shoulder is machined on the telescopic pin. A spring is installed between the shoulder and the pressure sleeve. The spring is sleeved on the telescopic pin.

2. The automatic tube feeding device for a shoulder injection machine according to claim 1, characterized in that: A second mounting hole is machined above the air intake, and a limiting screw is connected inside the second mounting hole. An arc-shaped limiting groove is machined on the rotating shaft, and the end of the limiting screw is inserted into the arc-shaped limiting groove.

3. The automatic tube feeding device for a shoulder injection machine according to claim 1, characterized in that: The upper tube coil is connected to two support plates at both ends, and bearing seats are installed on the support plates. The two ends of the rotating shaft are connected to the bearing seats. A motor is installed on the support plate below the upper tube coil, and the output shaft of the motor is connected to one end of the rotating shaft through a pulley and a belt.

4. The automatic tube feeding device for a shoulder injection machine according to claim 1, characterized in that: The telescopic pins are in the same row, and the push tube head is machined with a clearance groove to avoid the telescopic pins.

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