Structure of a special-shaped pipe inlet for a fully automatic hose shoulder injection machine

Abstract

The present invention relates to the technical field of shoulder injection machines, and specifically discloses a structure for a special-shaped tube feeding of a fully automatic hose shoulder injection machine, including a special-shaped tube feeding device, a driving mechanism, a tube-snapping prevention mechanism, a tube-inserting mechanism, a molding mechanism, a hose and a turntable, wherein the tube-snapping prevention mechanism is used to abut against the hose to prevent the hose from being offset, the tube-inserting mechanism is used to insert the hose into the molding mechanism, and the molding mechanism is arranged on the turntable; the special-shaped tube feeding device is a symmetrical structure as a whole, and includes a bottom plate, a guide rail, a slider, a mounting plate, a first connecting plate, a first cylinder, a clamping strip, a chuck and an inner support block. The present invention can realize that the shoulder edge of the male die head does not need to be chamfered R angle, thus avoiding the phenomenon of material leakage during shoulder injection. When the hose is a special-shaped tube, the deformation effect of the hose is more stable, the shape is more precise, the product qualification rate is high, and the production efficiency is high.

Description

Technical Field

[0001] The present invention relates to the technical field of shoulder injection machines, and particularly to a structure for feeding special-shaped tubes into a full-automatic hose shoulder injection machine. Background Art

[0002] In the initial production of the hose body, hoses are generally circular. When injecting shoulders subsequently, in addition to most hoses on the market with circular shoulders, some hose products have shoulders in the shape of ellipses, flats, squares, hexagons, or other shapes. Such non-circular shoulders are collectively referred to as special-shaped shoulders, and such hoses are collectively referred to as special-shaped tubes.

[0003] A hose shoulder injection machine is a special device for forming shoulders on hoses and is widely used in the processing of plastic hoses. Its main function is to inject shoulders onto the hoses through injection molding, compression molding, high-frequency welding, and ultrasonic welding, so as to achieve a uniform thickness and beautiful appearance of the shoulders.

[0004] Currently, the following areas in the existing technology still need to be improved: Generally, the existing hose shoulder injection machines on the market feed the hoses by directly inserting them into the male mold head and the outer sleeve. In order to smoothly insert the tubes, the edges of the shoulders of the male mold head need to be chamfered with an R angle, which results in easy leakage of materials during shoulder injection and low production efficiency. At the same time, the existing methods for deforming hoses are manual deformation or external deformation, and such methods easily lead to unstable deformation and inaccurate shapes of the hoses. Moreover, when the hoses to be produced are special-shaped tubes, there are situations where the deformation effect is not good and there are shape errors, resulting in a high rejection rate of products. Summary of the Invention

[0005] To solve the above problems existing in the prior art, the present invention provides a structure for feeding special-shaped tubes into a full-automatic hose shoulder injection machine, which can achieve that the edges of the shoulders of the male mold head no longer need to be chamfered with an R angle, avoiding the phenomenon of material leakage during shoulder injection. When the hose is a special-shaped tube, the deformation effect of the hose is more stable, the shape is more accurate, the product qualification rate is high, and the production efficiency is high.

[0006] The object of the present invention can be achieved by the following technical solutions:

[0007] A structure for feeding special-shaped tubes into a full-automatic hose shoulder injection machine includes a special-shaped tube feeder, a driving mechanism, an anti-tube-entraining mechanism, an intubation mechanism, a forming mechanism, a hose, and a turntable. The anti-tube-entraining mechanism is used to resist the hose to prevent the position of the hose from shifting. The intubation mechanism is used to insert the hose into the forming mechanism, and the forming mechanism is arranged on the turntable.

[0008] The overall shape of the special-shaped pipe feeder is a symmetric structure. The special-shaped pipe feeder includes a bottom plate, guide rails, sliders, mounting plates, first connecting plates, first cylinders, clamping bars, clamping heads and inner supporting blocks. The two guide rails are fixedly connected to both sides of the bottom plate. The sliders are slidably connected to the guide rails. The first connecting plates are connected to the sliders through the mounting plates. The first cylinders are fixedly connected to the first connecting plates. Two clamping bars are arranged between the first cylinders on both sides. Each clamping bar is provided with two clamping heads. The inner supporting blocks are arranged at the clamping heads.

[0009] A driving mechanism for driving the mounting plate is provided on one side of the special-shaped pipe feeder.

[0010] The forming mechanism includes a mandrel. An outer sleeve is sleeved on the outside of the mandrel. A male mold head is arranged at the top of the mandrel.

[0011] The inner supporting blocks are integrally arranged up and down. The upper part of the inner supporting blocks is cylindrical. The circular diameter of the upper part of the inner supporting blocks is smaller than the diameter of the hose. An annular groove is arranged on the upper part of the inner supporting blocks. A groove is arranged at the bottom of the inner supporting blocks. The groove at the bottom of the inner supporting blocks matches the male mold head.

[0012] Preferably, the driving mechanism includes a first motor, a coupling, a lead screw, a lead screw nut and a second connecting plate. The first motor is connected to the lead screw through the coupling. The lead screw nut is arranged on the lead screw. The lead screw nut is fixedly connected to the second connecting plate. A through hole is arranged on the second connecting plate. The lead screw passes through the through hole of the second connecting plate and is rotatably connected to the second connecting plate. The second connecting plate is fixedly connected to the mounting plate.

[0013] Preferably, the anti-pipe-dragging mechanism includes a chassis, a second cylinder and a top block. The second cylinder is arranged above the chassis. One end of the extending rod of the second cylinder is provided with an external thread. The top block is threadedly connected to the extending rod.

[0014] Preferably, the pipe inserting mechanism includes a pipe inserter, a slide rail, a second motor and a pipe groove. The slide rail is fixedly connected to the middle of one side of the bottom plate. The pipe inserter is slidably connected to the slide rail. The second motor is arranged on the top of the slide rail. The pipe groove is arranged at the lower part of the bottom plate. The hose is arranged at the pipe groove. The position of the hose corresponds to the position of the pipe inserter.

[0015] Preferably, pins are arranged on both side walls of the groove at the bottom of the inner supporting block. Key grooves are arranged on both sides of the male mold head. The pins and the key grooves match each other.

[0016] Preferably, one end of the chuck is semicircularly arranged, the semicircular sections of the chuck on the two clamping strips are arranged opposite to each other, and the semicircular sections of the chuck match the annular groove of the inner support block.

[0017] Preferably, the second connecting plate is arranged in a U shape.

[0018] Preferably, a sensor is provided on one side of the second connecting plate.

[0019] Preferably, a silicone pad is provided on the top block.

[0020] The beneficial effects of the present invention are:

[0021] (1) By setting up a special-shaped tube feeder and a forming mechanism, the technical effect that can be achieved is that the first cylinder of the present application is a slide cylinder. Compared with traditional cylinders and linear guides, it can save more space and the coordination between the structures is tighter and more delicate. The circular diameter of the upper part of the inner support block is smaller than the diameter of the hose, so that the hose can pass through the inner support block smoothly, which is convenient for tube feeding. Pins are provided on the two side walls of the groove at the bottom of the inner support block, and key slots are provided on both sides of the male die head. The pins and key slots match each other, which can effectively avoid the situation where the angle of the inner support block deviates from the male die head when it is seated on the male die head, thereby improving production efficiency.

[0022] (2) By setting up a special-shaped tube feeder and a forming mechanism, a technical effect can also be achieved. By setting up an inner support block, the shoulder edge of the male die head no longer needs to be chamfered with an R angle, thereby avoiding the phenomenon of material leakage during shoulder injection. The upper part of the inner support block is cylindrical, and the lower part is in the shape of the special-shaped tube to be produced, which is convenient for tube feeding and has strong flexibility. The shape of the lower part of the inner support block can be adjusted according to needs. The inner support block, the outer sleeve and the male die head can cooperate to produce special-shaped tubes of various shapes. Compared with deformation from the outside, the deformation effect of the hose is more stable, the shape is more precise, the product qualification rate is high, and the production efficiency is high.

[0023] (3) By providing a special-shaped tube feeder, an anti-tube-snapping mechanism and a tube-inserting mechanism, the technical effect that can be achieved is that the semicircular section of the clamp matches the annular groove of the inner support block, which is convenient for clamping the inner support block; the anti-tube-snapping mechanism is used to support the hose to prevent the hose from shifting in position; a silicone pad is provided on the top block to play a buffering role and also to prevent the hose from being distorted or deformed; the tube-inserting mechanism is used to insert the hose into the molding mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0025] Figure 1 A perspective view of the present invention;

[0026] Figure 2The first structural diagram of the special-shaped tube feeder, driving mechanism, anti-tube-entraining mechanism and tube inserting mechanism in the present invention;

[0027] Figure 3 The second structural diagram of the special-shaped tube feeder, driving mechanism, anti-tube-entraining mechanism and tube inserting mechanism in the present invention;

[0028] Figure 4 The structural diagram of the special-shaped tube feeder in the present invention;

[0029] Figure 5 The right view of the special-shaped tube feeder in the present invention;

[0030] Figure 6 The structural diagram of the chuck and the inner support block in the present invention;

[0031] Figure 7 The top view of a part of the special-shaped tube feeder in the present invention;

[0032] Figure 8 The structural diagram of the driving mechanism in the present invention;

[0033] Figure 9 The structural diagram of the anti-tube-entraining mechanism in the present invention;

[0034] Figure 10 The structural diagram of the tube inserting mechanism in the present invention;

[0035] Figure 11 The cross-sectional view when the special-shaped tube feeder and the forming mechanism in the present invention cooperate;

[0036] Figure 12 The schematic diagram of a part of the forming mechanism in the present invention;

[0037] Main component symbol description:

[0038] In the figure: 101, special-shaped tube feeder; 202, driving mechanism; 303, anti-tube-entraining mechanism; 404, tube inserting mechanism; 505, forming mechanism; 1, bottom plate; 2, guide rail; 3, slider; 4, mounting plate; 5, first connecting plate; 6, first cylinder; 8, clamping strip; 9, chuck; 10, inner support block; 11, first motor; 12, coupling; 13, lead screw; 14, lead screw nut; 15, second connecting plate; 16, inductor; 17, chassis; 18, second cylinder; 19, extending rod; 20, top block; 21, silica gel pad; 22, tube inserter; 23, slide rail; 24, second motor; 25, mandrel; 26, turntable; 27, outer sleeve; 28, male mold head; 29, tube groove; 30, hose; 31, pin; 32, keyway. Detailed implementation mode

[0039] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention are clearly and completely described below in combination with the accompanying drawings and preferred embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] In the description of the present application, it should be understood that the orientation or position relationship indicated by "inside" or "outside" is based on the orientation or position described in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, specific orientation structure and operation, and therefore cannot be understood as a limitation on the present application.

[0041] A structure for feeding a special-shaped tube of a fully automatic hose shoulder injection machine comprises a special-shaped tube feeder 101, a driving mechanism 202, a tube-carrying prevention mechanism 303, a tube-inserting mechanism 404, a molding mechanism 505, a hose 30 and a turntable 26, wherein the tube-carrying prevention mechanism 303 is used to abut against the hose 30 to prevent the position of the hose 30 from being offset, the tube-inserting mechanism 404 is used to insert the hose 30 into the molding mechanism 505, and the molding mechanism 505 is arranged on the turntable 26;

[0042] The special-shaped tube feeder 101 is a symmetrical structure as a whole. The special-shaped tube feeder 101 includes a base plate 1, a guide rail 2, a slider 3, a mounting plate 4, a first connecting plate 5, a first cylinder 6, a clamping strip 8, a chuck 9 and an inner support block 10. The two guide rails 2 are fixedly connected to the two sides of the base plate 1, the slider 3 is slidably connected to the guide rail 2, the first connecting plate 5 is connected to the slider 3 through the mounting plate 4, and the first cylinder 6 is fixedly connected to the first connecting plate 5. The first cylinder 6 of the present application is a slide cylinder. Compared with traditional cylinders and linear guides, it can save more space and the cooperation between the structures is more compact and delicate. Two clamping strips 8 are arranged between the first cylinders 6 on both sides, and two chucks 9 are arranged on each clamping strip 8. The inner support block 10 is arranged at the chuck 9;

[0043] The driving mechanism 202 includes a first motor 11, a coupling 12, a screw 13, a screw nut 14 and a second connecting plate 15. The first motor 11 is connected to the screw 13 through the coupling 12. The screw nut 14 is arranged on the screw 13. The screw nut 14 is fixedly connected to the second connecting plate 15. A through hole is arranged on the second connecting plate 15. The screw 13 passes through the through hole of the second connecting plate 15 and is rotatably connected to the second connecting plate 15. The second connecting plate 15 is fixedly connected to the mounting plate 4.

[0044] The tube-withholding prevention mechanism 303 includes a chassis 17, a second cylinder 18, and a top block 20. The second cylinder 18 is disposed above the chassis 17. One end of the extending rod 19 of the second cylinder 18 is provided with an external thread, and the top block 20 is threadedly connected to the extending rod 19.

[0045] The tube inserting mechanism 404 includes a tube inserter 22, a slide rail 23, a second motor 24, and a tube groove 29. The slide rail 23 is fixedly connected to the middle of one side of the bottom plate 1. The tube inserter 22 is slidably connected to the slide rail 23. The second motor 24 is disposed on the top of the slide rail 23. The tube groove 29 is disposed at the lower part of the bottom plate 1. A flexible tube 30 is disposed at the tube groove 29, and the position of the flexible tube 30 corresponds to the position of the tube inserter 22. The shaping mechanism 505 includes a mandrel 25. An outer sleeve 27 is sleeved outside the mandrel 25. A male mold head 28 is disposed at the top of the mandrel 25.

[0046] The inner support block 10 is integrally formed up and down. The upper part of the inner support block 10 is cylindrical. The diameter of the circle at the upper part of the inner support block 10 is smaller than the diameter of the flexible tube 30, enabling the flexible tube 30 to pass through the inner support block 10 smoothly, facilitating tube feeding. An annular groove is disposed at the upper part of the inner support block 10, and a groove is disposed at the bottom of the inner support block 10. The groove at the bottom of the inner support block 10 matches the male mold head 28. Pins 31 are disposed on both side walls of the groove at the bottom of the inner support block 10, and key grooves 32 are disposed on both sides of the male mold head 28. The pins 31 and the key grooves 32 match each other, which can effectively avoid the situation that the angle between the inner support block 10 and the male mold head 28 deviates when the inner support block 10 sits on the male mold head 28, improving production efficiency. By providing the inner support block 10, the shoulder edge of the male mold head 28 does not need to be chamfered with an R angle anymore, avoiding the phenomenon of material leakage during shoulder injection. The upper part of the inner support block 10 is cylindrical, and the lower part is in the shape of the special-shaped tube to be produced, facilitating tube feeding and having strong flexibility. The shape of the lower part of the inner support block 10 can be adjusted according to requirements. By the cooperation of the inner support block 10, the outer sleeve 27, and the male mold head 28, special-shaped tubes of various shapes can be produced. Compared with external deformation, the deformation effect of the flexible tube 30 is more stable, the shape is more precise, the product qualification rate is high, and the production efficiency is high.

[0047] One end of the chuck 9 is semicircular. The semicircular segments of the chucks 9 on the two clamping strips 8 are oppositely disposed. The semicircular segment of the chuck 9 matches the annular groove of the inner support block 10, facilitating the clamping of the inner support block 10. The second connecting plate 15 is U-shaped. A sensor 16 is disposed on one side of the second connecting plate 15. A silica gel pad 21 is disposed on the top block 20, which plays a buffering role and can also prevent the flexible tube 30 from being dented or deformed.

[0048] The working principle and usage process of the present invention: In the initial state, the special-shaped tube feeder 101 is in a waiting state, that is, the first cylinder 6 and the clamping strips 8 are in a combined state, and the chuck 9 clamps the inner support block 10. At this time, the positions of the first connecting plate 5, the first cylinder 6, the clamping strips 8, the chuck 9, and the inner support block 10 are below the tube groove 29 and above the mandrel 25.

[0049] When the turntable 26 rotates and drives the mandrel 25 to the pipe inlet station, first, the first motor 11 rotates to drive the lead screw 13 to rotate. The lead screw 13 drives the lead screw nut 14 and the second connecting plate 15 to move downward along the Z-axis direction through the lead screw 13. The second connecting plate 15 drives the mounting plate 4, the first connecting plate 5, the first cylinder 6, the clamping strip 8, the clamping head 9, and the inner support block 10 in the special-shaped pipe inlet device 101 to move downward. When the lower groove of the inner support block 10 moves to completely fit with the male die head 28, the first motor 11 stops rotating, and the special-shaped pipe inlet device 101 stops moving downward.

[0050] Control the first cylinder 6 to open, drive the clamping strip 8 and the clamping head 9 to move in opposite directions to loosen the inner support block 10, and control the special-shaped pipe inlet device 101 to continue moving downward to make way for the pipe inserter 22 to avoid interference. Control the second motor 24 to start, and the pipe inserter 22 moves downward along the Z-axis direction through the slide rail 23, pushes the hose 30 placed at the pipe groove 29 downward, inserts it through the inner support block 10 onto the outer sleeve 27 until the upper edge of the hose 30 is about 2 mm higher than the outer sleeve 27, and then control the pipe inserter 22 to lift upward along the Z-axis direction through the slide rail 23. Control the special-shaped pipe inlet device 101 to move upward. When the semi-circular section of the clamping head 9 aligns with the annular groove of the inner support block 10, control the first cylinder 6 to close and drive the clamping strip 8 and the clamping head 9 to move in the direction of approaching each other. The clamping head 9 clamps the inner support block 10, and control the special-shaped pipe inlet device 101 to move upward to return to the initial waiting state. That is, the height of the clamping head 9 is higher than the male die head 28, and the turntable 26 rotates counterclockwise to continue the pipe inlet work of the next group of mandrels 25.

[0051] During the upward lifting process of the special-shaped pipe inlet device 101, the anti-pipe-carrying mechanism 303 works. The extending rod 19 of the second cylinder 18 extends, and the silica gel pad 21 of the top block 20 presses against the hose 30 to prevent the inner support block 10 from driving the hose 30 to lift upward when it disengages from the hose 30 upward.

[0052] The above is only a preferred embodiment of the present invention, and it does not impose any form of limitation on the present invention. Although the present invention has been disclosed as above with the preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments by using the above-disclosed technical content within the scope of the technical solution of the present invention. However, as long as it does not depart from the content of the technical solution of the present invention, any brief modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention still belong to the scope of the technical solution of the present invention.

Claims

1. Structure of a special-shaped pipe inlet for a fully automatic hose shoulder injection machine, characterized in that: It includes a special-shaped pipe inlet device, a driving mechanism, an anti-tube-entraining mechanism, an intubation mechanism, a forming mechanism, a flexible tube and a turntable. The anti-tube-entraining mechanism is used to resist the flexible tube to prevent the position deviation of the flexible tube. The intubation mechanism is used to insert the flexible tube into the forming mechanism. The forming mechanism is arranged on the turntable. The special-shaped pipe inlet device is of a symmetrical structure as a whole. The special-shaped pipe inlet device includes a bottom plate, guide rails, sliders, mounting plates, first connecting plates, first cylinders, clamping bars, clamping heads and inner support blocks. The two guide rails are fixedly connected to both sides of the bottom plate. The sliders are slidably connected to the guide rails. The first connecting plates are connected to the sliders through the mounting plates. The first cylinders are fixedly connected to the first connecting plates. Two clamping bars are arranged between the first cylinders on both sides. Two clamping heads are arranged on each clamping bar. The inner support blocks are arranged at the clamping heads. A driving mechanism for driving the mounting plate is arranged on one side of the special-shaped pipe inlet device. The forming mechanism includes a mandrel. An outer sleeve is sleeved outside the mandrel. A male mold head is arranged at the top of the mandrel. The inner support block is integrally arranged up and down. The upper part of the inner support block is cylindrical. The circular diameter of the upper part of the inner support block is smaller than the diameter of the flexible tube. An annular groove is arranged on the upper part of the inner support block. A groove is arranged at the bottom of the inner support block. The groove at the bottom of the inner support block matches the male mold head.

2. The structure of the special-shaped pipe inlet of a fully automatic hose shoulder injection machine according to claim 1, characterized in that: The driving mechanism includes a first motor, a coupling, a lead screw, a lead screw nut and a second connecting plate. The first motor is connected to the lead screw through the coupling. The lead screw nut is arranged on the lead screw. The lead screw nut is fixedly connected to the second connecting plate. A through hole is arranged on the second connecting plate. The lead screw passes through the through hole of the second connecting plate and is rotatably connected to the second connecting plate. The second connecting plate is fixedly connected to the mounting plate.

3. The structure of the special-shaped pipe inlet of a fully automatic hose shoulder injection machine according to claim 1, characterized in that: The anti-tube-entraining mechanism includes a chassis, a second cylinder and a top block. The second cylinder is arranged above the chassis. One end of the extending rod of the second cylinder is provided with an external thread. The top block is threadedly connected to the extending rod.

4. The structure of the special-shaped pipe inlet of a fully automatic hose shoulder injection machine according to claim 1, characterized in that: The intubation mechanism includes an intubator, a slide rail, a second motor and a tube groove. The slide rail is fixedly connected to the middle of one side of the bottom plate. The intubator is slidably connected to the slide rail. The second motor is arranged on the top of the slide rail. The tube groove is arranged at the lower part of the bottom plate. The flexible tube is arranged at the tube groove. The position of the flexible tube corresponds to the position of the intubator.

5. The structure of the special-shaped pipe inlet of a fully automatic hose shoulder injection machine according to claim 1, characterized in that: Pins are arranged on both side walls of the groove at the bottom of the inner support block. Key grooves are arranged on both sides of the male mold head. The pins and the key grooves match each other.

6. The structure of the special-shaped pipe inlet of a fully automatic hose shoulder injection machine according to claim 1, characterized in that: One end of the clamping head is semicircular. The semicircular sections of the clamping heads on the two clamping bars are arranged oppositely. The semicircular section of the clamping head matches the annular groove of the inner support block.

7. The structure of the special-shaped pipe inlet of a fully automatic hose shoulder injection machine according to claim 2, characterized in that: The second connecting plate is U-shaped.

8. The structure of the special-shaped pipe inlet of a fully automatic hose shoulder injection machine according to claim 2, characterized in that: A sensor is arranged on one side of the second connecting plate.

9. The structure of the special-shaped pipe inlet of a fully automatic hose shoulder injection machine according to claim 3, characterized in that: A silica gel pad is arranged on the top block.

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