Hose enclasping mechanism for core rod

Abstract

The invention relates to the technical field of shoulder injection machines, in particular to a hose enclasping mechanism for a core rod, which comprises a core rod and a hose sleeved on the core rod, and further comprises a clamping assembly, a locking shaft sleeve sleeved on the core rod, a movable ring sleeved outside the locking shaft sleeve, a limiting cover mounted at the top of the movable ring, and a clamping assembly mounted on the limiting cover, a silica gel ring is arranged between the locking shaft sleeve and the limiting cover; an air pipe joint is arranged on one side of the movable ring; and the detection assembly comprises a vent hole formed in the core rod, ventilation is conducted in the hose through the vent hole, a marking piece is arranged at the top of the limiting cover, and when the air pressure in the vent hole cannot be continuously increased, the marking piece marks the outer wall of the hose. The pressure energy of compressed air is directly converted into power for linear motion, and efficient and accurate control is achieved. The hose is extruded through deformation of the silica gel ring, wrapping performance is good, flexibility is good, and the hose cannot be scratched. The application range is wide, and the device can be used for pipe inlet limiting and mold closing pipe carrying prevention of the shoulder injection machine; and detecting the air tightness of the cover locking machine.

Description

Technical Field

[0001] This invention relates to the field of injection molding machine technology, and more specifically to a hose clamping mechanism for mandrels. Background Technology

[0002] With the rapid development of modern technology and the continuous improvement of people's living standards, the cosmetics and pharmaceutical industries are changing rapidly. Therefore, for the tube packaging industry, which serves the cosmetics and pharmaceutical industries, the ability to maintain continuous and efficient production directly affects the overall profitability of the company.

[0003] Currently, the existing injection molding machine has two different devices for the inlet tube limit and the mold closing anti-slip tube. The original mold closing anti-slip tube was ejected by a cylinder, which was subjected to force on one side. This made it easy for die-cast products to tilt, resulting in product defects. In addition, the locking machine does not have an airtightness detection device, which requires additional detection steps and reduces production efficiency. Summary of the Invention

[0004] In view of the above-mentioned shortcomings of the prior art, the present invention provides a hose clamping mechanism for mandrels, which can effectively solve the problems of products being prone to tilting and the inability to detect them in a timely manner during the production process.

[0005] To achieve the above objectives, the present invention provides the following technical solution: This invention provides a hose clamping mechanism for a mandrel, comprising a mandrel and a hose sleeved on the mandrel, and further comprising: The clamping assembly includes a locking bushing fitted on a mandrel, a movable ring fitted on the outside of the locking bushing, a limit cap installed on the top of the movable ring, a silicone ring between the locking bushing and the limit cap, and an air pipe connector installed on one side of the movable ring. When gas is filled into the air pipe connector, the silicone ring is squeezed to become shorter in the longitudinal direction and wider in the transverse direction. The detection component includes a vent hole in the mandrel, through which air is supplied to the hose. A marker is provided on the top of the limiting cover. When the air pressure in the vent hole cannot be continuously increased, the marker marks the outer wall of the hose.

[0006] Furthermore, the bottom of the locking bushing is provided with a slit and a locking nut is threaded on it. When the locking nut is tightened, the inner diameter of the locking bushing shrinks.

[0007] Furthermore, a detection tube is connected to the bottom end of the vent, a reinforcing tube is connected to the air pipe connector, the detection tube and the reinforcing tube are connected to a flow divider box, an air inlet pipe is connected to the outside of the flow divider box, and a delay element is provided in the flow divider box, through which the air in the air inlet pipe first enters the reinforcing tube and then enters the detection tube.

[0008] Furthermore, the delay component includes a first baffle and a second baffle that are slidably installed in the distribution box. The first baffle is located at the connection between the detection tube and the distribution box, and the second baffle is located at the connection between the reinforcement tube and the distribution box. A vent plate is connected between the first baffle and the second baffle. The vent plate has multiple small vent holes. A first elastic rod is connected between the vent plate and the distribution box. When the air inlet pipe adds air to the distribution box, the first baffle gradually opens the detection tube, and the second baffle gradually closes the reinforcement tube.

[0009] Furthermore, the marking element includes a right-angle tube fixedly connected to the intake pipe, an electric actuator mounted on the right-angle tube, and a marking rod on the output shaft of the electric actuator.

[0010] Furthermore, a test box is connected to the right-angle tube, and two wind resistance plates are slidably installed in the test box. A third elastic rod is installed between the two wind resistance plates. A first connecting plate is elastically installed on one of the wind resistance plates, and a second connecting plate is fixedly installed on the other wind resistance plate. Contact electrodes are provided on the side of the first connecting plate and the second connecting plate that are close to each other. When the two contact electrodes come into contact, the electric push rod is activated.

[0011] Furthermore, the test box is equipped with an airbag, and a piston tube is provided on one side of the two first connecting plates. The piston tube is connected to the airbag. A piston rod is movably inserted into the piston tube. A right-angle bracket is slidably installed on the piston rod and is slidably connected to the first connecting plate. A wedge block is provided on the right-angle bracket. A protrusion is provided on the first connecting plate. When the airbag is compressed, the piston rod drives the wedge block to squeeze the protrusion, causing the first connecting plate and the second connecting plate to separate.

[0012] Furthermore, the airbag is equipped with a return spring.

[0013] Furthermore, the top of the hose is provided with a shoulder cap, and the shoulder cap has internal threads.

[0014] Furthermore, the outer ring of the silicone ring is fitted with a limiting ring.

[0015] Furthermore, the upper end of the locking bushing has a first sealing groove, in which a piston sealing ring is installed. The outer ring of the locking bushing cooperates with the movable ring, and the lower end of the movable ring has a second sealing groove, in which a dustproof sealing ring is installed.

[0016] Furthermore, the upper end of the movable ring is provided with an external thread, and the inner wall of the limiting cover is provided with an internal thread that matches the movable ring.

[0017] The technical solution provided by this invention has the following advantages compared with the known prior art: This technology directly converts compressed air pressure into linear motion power, achieving efficient and precise control. The silicone ring deforms to compress the flexible hose, providing excellent wrapping and flexibility without scratching it. It has a wide range of applications, including inlet tube limiting and mold closing anti-tube slippage in injection molding machines; and airtightness testing in capping machines. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0019] Figure 1 This is an overall schematic diagram of the present invention; Figure 2 This is a sectional view of the shoulder cap when it is closed; Figure 3 for Figure 2 Enlarged view of the structure of part A in the middle; Figure 4 for Figure 2 Enlarged view of the structure of section B; Figure 5 for Figure 2 Enlarged view of the structure of section C in the middle; Figure 6 This is a structural schematic diagram of the locking bushing section; Figure 7 This is a sectional view of the locking bushing section.

[0020] The labels in the diagram represent: 1. Locking bushing; 2. Moving ring; 3. Limiting cap; 4. Locking nut; 5. Limiting ring; 6. Silicone ring; 7. Piston seal ring; 8. Dustproof seal ring; 9. Air pipe connector; 10. Core rod; 11. Hose; 12. Injection cap; 13. Vent hole; 14. Air inlet pipe; 15. Diverter box; 16. Detection tube; 17. Reinforcing tube; 18. Vent plate; 19. First elastic rod; 20. First baffle; 21. Second baffle; 22. Right-angle tube; 23. Electric actuator; 24. Marking rod; 25. Test box; 26. First connecting plate; 27. Second connecting plate; 28. Second elastic rod; 29. ​​Airbag; 30. Piston tube; 31. Third elastic rod; 32. Right-angle bracket; 33. Wedge block. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0022] The present invention will be further described below with reference to embodiments.

[0023] Example 1: refer to Figure 1 A hose clamping mechanism for a mandrel includes a mandrel 10 and a hose 11 sleeved on the mandrel 10. It also includes a clamping assembly, including a locking sleeve 1 sleeved on the mandrel 10. The locking sleeve 1 has a slit at its bottom and a locking nut 4 threaded onto it. When the locking nut 4 is tightened, the inner diameter of the locking sleeve 1 shrinks. A movable ring 2 is sleeved on the outside of the locking sleeve 1. A limit cap 3 is installed on the top of the movable ring 2. A silicone ring 6 is installed between the locking sleeve 1 and the limit cap 3. An air pipe connector 9 is installed on one side of the movable ring 2. When the air pipe connector... When gas is filled into the 9, the silicone ring 6 is compressed, becoming shorter longitudinally and wider laterally. The top of the hose 11 is provided with a shoulder cap 12, and the inside of the shoulder cap 12 is provided with internal threads. The outer ring of the silicone ring 6 is equipped with a limit ring 5. The upper end of the locking bushing 1 has a first sealing groove, and the first sealing groove is equipped with a piston sealing ring 7. The outer ring of the locking bushing 1 cooperates with the movable ring 2. The lower end of the movable ring 2 has a second sealing groove, and the second sealing groove is equipped with a dustproof sealing ring 8. The upper end of the movable ring 2 is provided with external threads, and the inner wall of the limit cap 3 is provided with internal threads that are compatible with the movable ring 2.

[0024] When working on the injection molding machine, the hose 11 clamping mechanism is fitted onto the mandrel 10. The clamping position is determined according to the length of the hose being produced. Tightening the locking nut 4 reduces the inner diameter of the locking sleeve 1, fixing it firmly onto the mandrel 10. During tube insertion, the hose 11 is fitted onto the mandrel 10 from top to bottom. When the lower end of the hose touches the step on the locking sleeve 1, the hose 11 is fully inserted. During mold closing, the air pipe connector 9 is vented, and the movable ring 2 and the limit cover 3 move downwards. At this time, the silicone ring 6 is compressed, becoming shorter longitudinally and wider laterally. During the deformation process, the hose 11 is pressed tightly onto the mandrel 10. This soft pressure and replacement compression method is more stable and safer. When the mold frame is lifted upwards after injection, this hose clamping mechanism can effectively prevent the hose 11 from being carried upwards by the mold frame.

[0025] Example 2: refer to Figure 2The detection assembly includes a vent 13 formed in the mandrel 10, through which air is supplied to the hose 11. A detection tube 16 is connected to the bottom end of the vent 13. A reinforcing tube 17 is connected to the air pipe connector 9. The detection tube 16 and the reinforcing tube 17 are connected to a distribution box 15. An air inlet pipe 14 is connected to the distribution box 15. A delay element is provided in the distribution box 15, allowing air from the air inlet pipe 14 to first enter the reinforcing tube 17 and then the detection tube 16. The delay element includes a first baffle 20 and a second baffle 21 slidably mounted in the distribution box 15. The first baffle 20 is located on the detection tube. At the connection between the reinforcing tube 17 and the distribution box 15, the second baffle 21 is located at the connection between the reinforcing tube 17 and the distribution box 15. A vent plate 18 is connected between the first baffle 20 and the second baffle 21. The vent plate 18 has multiple small vent holes. A first elastic rod 19 is connected between the vent plate 18 and the distribution box 15. When the air inlet pipe 14 adds air to the distribution box 15, the first baffle 20 gradually opens the detection tube 16, and the second baffle 21 gradually closes the reinforcing tube 17. A marker is provided on the top of the limiting cover 3. When the air pressure in the vent 13 cannot continue to increase, the marker marks the outer wall of the hose 11. The system includes a right-angle tube 22 fixedly connected to the intake pipe 14, an electric actuator 23 mounted on the right-angle tube 22, a marking rod 24 on the output shaft of the electric actuator 23, a test box 25 connected to the right-angle tube 22, two air resistance plates slidably mounted in the test box 25, a third elastic rod 31 installed between the two air resistance plates, a first connecting plate 26 elastically mounted on one of the air resistance plates, a second elastic rod 28 connecting the first connecting plate 26 and the test box 25, and a second connecting plate 27 fixedly mounted on the other air resistance plate. Contact electrodes are provided on the sides of the first connecting plate 26 and the second connecting plate 27 that are close to each other. When the two contact electrodes come into contact, the electric push rod 23 is activated. The test box 25 is equipped with an airbag 29, and the airbag 29 is equipped with a return spring. The piston tube 30 is provided on one side of the two first connecting plates 26, and the piston tube 30 is connected to the airbag 29. A piston rod is movably inserted on the piston tube 30, and a right-angle bracket 32 ​​is slidably installed on the piston rod. The right-angle bracket 32 ​​is slidably connected to the first connecting plate 26. A wedge block 33 is provided on the right-angle bracket 32, and a protrusion is provided on the first connecting plate 26. When the airbag 29 is compressed, the piston rod drives the wedge block 33 to squeeze the protrusion, so that the first connecting plate 26 and the second connecting plate 27 are separated.

[0026] When operating on the capping machine, the hose clamping mechanism is fitted onto the mandrel 10 of the capping machine. The hose 11, with its nozzle already inserted at the inlet station, is then fitted onto the mandrel 10. After passing through the film application and capping stations, once the head of the hose 11 is secured with the inlet cap 12, the sealing performance of the hose 11 after capping needs to be checked. Air is then supplied to the air pipe connector 9, causing the silicone ring 6 to be compressed, becoming shorter longitudinally and wider laterally. This compresses the hose tightly against the mandrel 10, resulting in a sealed tail. Next, air is supplied to the mandrel, with gas flowing from the vent hole 13 into the hose 11. If no gas leaks from the inlet cap 12 where it meets the hose, the cap seal is good; if gas leaks from the connection, the cap seal is unqualified. After the test, air supply to the air pipe connector 9 and the mandrel 10 is stopped, the silicone ring 6 returns to its original shape, and the movable ring 2 returns to its original position.

[0027] To improve the efficiency of testing and production, such as Figure 2 As shown, air is introduced into the distribution box 15 through the air inlet pipe 14. The distribution box 15 is equipped with a sliding vent plate 18 with small vent holes for airflow, albeit at a relatively slow speed. This airflow pushes the vent plate 18 to slide. The airflow first passes through the reinforcing pipe 17 and enters the air pipe connector 9, gradually completing the aforementioned clamping and reinforcing process. As the vent plate 18 slides, the second baffle 21 gradually blocks the opening of the reinforcing pipe 17, and the first baffle 20 gradually opens the opening of the detection pipe 16. Air gradually enters the vent hole 13 through the detection pipe 16. During this clamping process, the aforementioned shoulder injection process is completed. After the shoulder injection is complete, the vent hole 13 is vented to complete the aforementioned detection process.

[0028] It is worth noting that while air continuously enters through the intake pipe 14, the amount of air entering through the reinforcing pipe 17 gradually decreases over time until it closes, while the amount of air entering through the detection pipe 16 continuously increases. When the seal is satisfactory, the air pressure in the detection pipe 16 continuously increases, thus the air pressure in the intake pipe 14 also continuously increases. As the air pressure increases, such as... Figure 4 As shown, the wind resistance plates slide under the action of air pressure. The elastic force of the two third elastic rods 31 is less than the spring force in the airbag 29. This allows the gap between the two wind resistance plates to decrease first when the air pressure increases, meaning the third elastic rods 31 are gradually compressed. The first connecting plate 26 and the second connecting plate 27 gradually move closer, and the two contact electrodes make full contact, causing the electric actuator 23 to start (as shown). Figure 5 As shown), when the sealing effect is satisfactory, the air pressure continues to increase, causing the airbag 29 to be gradually compressed. The air in the airbag 29 enters the piston tube 30, increasing the air pressure in the piston tube 30. The piston rod extends out of the piston tube 30, and the piston rod drives the right-angle bracket 32 ​​to move towards the first connecting plate 26 (as shown). Figure 4The right-angle bracket 32 ​​is horizontally slidably mounted on the first connecting plate 26 (the right-angle bracket 32 ​​and the piston rod are vertically slidably connected). The wedge block 33 squeezes the protrusion, causing the first connecting plate 26 to move away from the second connecting plate 27, separating the two contact electrodes. The electric push rod 23 stops driving, preventing the marking rod 24 from completing the marking. When the marking is defective, the internal air pressure will not continue to increase (due to air leakage), failing to achieve the effect of squeezing the airbag 29. Therefore, the electric push rod 23 continues to drive, completing the marking of the defective hose 11 or the shoulder cap 12.

[0029] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A hose clamping mechanism for a mandrel, comprising a mandrel (10) and a hose (11) sleeved on the mandrel (10), characterized in that, Also includes: The clamping assembly includes a locking bushing (1) sleeved on the mandrel (10), a movable ring (2) sleeved on the outside of the locking bushing (1), a limit cap (3) installed on the top of the movable ring (2), a silicone ring (6) between the locking bushing (1) and the limit cap (3), and an air pipe connector (9) installed on one side of the movable ring (2). When gas is filled into the air pipe connector (9), the silicone ring (6) is squeezed to become shorter in the longitudinal direction and wider in the transverse direction. The detection component includes a vent (13) in the mandrel (10) through which air is supplied to the hose (11). A marker is provided on the top of the limiting cover (3). When the air pressure in the vent (13) cannot be increased continuously, the marker marks the outer wall of the hose (11).

2. The hose clamping mechanism for a mandrel according to claim 1, characterized in that, The locking bushing (1) has a slit at the bottom and a locking nut (4) is threaded on it. When the locking nut (4) is tightened, the inner diameter of the locking bushing (1) shrinks.

3. The hose clamping mechanism for a mandrel according to claim 1, characterized in that, The bottom end of the vent (13) is connected to a detection tube (16), and a reinforcing tube (17) is connected to the air pipe connector (9). The detection tube (16) and the reinforcing tube (17) are connected to a flow divider (15). An air inlet pipe (14) is connected to the outside of the flow divider (15). A delay element is provided in the flow divider (15). The delay element allows the air in the air inlet pipe (14) to enter the reinforcing tube (17) first and then enter the detection tube (16).

4. A hose clamping mechanism for a mandrel according to claim 3, characterized in that, The delay component includes a first baffle (20) and a second baffle (21) slidably mounted on the diversion box (15). The first baffle (20) is located at the connection between the detection tube (16) and the diversion box (15), and the second baffle (21) is located at the connection between the reinforcing tube (17) and the diversion box (15). A vent plate (18) is connected between the first baffle (20) and the second baffle (21). The vent plate (18) has multiple small vent holes. A first elastic rod (19) is connected between the vent plate (18) and the diversion box (15). When the air inlet pipe (14) adds air to the diversion box (15), the first baffle (20) gradually opens the detection tube (16), and the second baffle (21) gradually closes the reinforcing tube (17).

5. A hose clamping mechanism for a mandrel according to claim 1, characterized in that, The marking element includes a right-angle tube (22) fixedly connected to the intake pipe (14), an electric actuator (23) is mounted on the right-angle tube (22), and a marking rod (24) is on the output shaft of the electric actuator (23).

6. A hose clamping mechanism for a mandrel according to claim 5, characterized in that, The right-angle tube (22) is connected to a test box (25). Two wind resistance plates are slidably installed in the test box (25). A third elastic rod (31) is installed between the two wind resistance plates. A first connecting plate (26) is elastically installed on one of the wind resistance plates, and a second connecting plate (27) is fixedly installed on the other wind resistance plate. Contact electrodes are provided on the side of the first connecting plate (26) and the second connecting plate (27) that are close to each other. When the two contact electrodes come into contact, the electric push rod (23) is activated.

7. A hose clamping mechanism for a mandrel according to claim 6, characterized in that, The test box (25) is provided with an airbag (29). A piston tube (30) is provided on one side of the two first connecting plates (26), and the piston tube (30) and the airbag (29) are connected. A piston rod is movably inserted on the piston tube (30). A right angle bracket (32) is slidably installed on the piston rod, and the right angle bracket (32) and the first connecting plate (26) are slidably connected. A wedge block (33) is provided on the right angle bracket (32), and a protrusion is provided on the first connecting plate (26). When the airbag (29) is compressed, the piston rod drives the wedge block (33) to squeeze the protrusion, so that the first connecting plate (26) and the second connecting plate (27) are separated.

8. A hose clamping mechanism for a mandrel according to claim 7, characterized in that, The airbag (29) is equipped with a return spring.

9. A hose clamping mechanism for a mandrel according to claim 1, characterized in that, The top of the hose (11) is provided with a shoulder cap (12), and the shoulder cap (12) is provided with an internal thread.

10. A hose clamping mechanism for a mandrel according to claim 1, characterized in that, The outer ring of the silicone ring (6) is fitted with a limiting ring (5).

11. A hose clamping mechanism for a mandrel according to claim 1, characterized in that, The upper end of the locking bushing (1) has a first sealing groove, and a piston sealing ring (7) is installed in the first sealing groove. The outer ring of the locking bushing (1) is engaged with the movable ring (2). The lower end of the movable ring (2) has a second sealing groove, and a dustproof sealing ring (8) is installed in the second sealing groove.

12. A hose clamping mechanism for a mandrel according to claim 1, characterized in that, The upper end of the movable ring (2) is provided with an external thread, and the inner wall of the limiting cover (3) is provided with an internal thread that is compatible with the movable ring (2).

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