Special-shaped pipe feeding structure of full-automatic hose shoulder injection machine

Abstract

The invention relates to the technical field of shoulder injection machines, and particularly discloses a special-shaped pipe feeding structure of a full-automatic hose shoulder injection machine, which comprises a special-shaped pipe feeding device, a driving mechanism, a pipe carrying prevention mechanism, a pipe insertion mechanism, a forming mechanism, a hose and a turntable, the pipe inserting mechanism is used for inserting a hose into the forming mechanism; the forming mechanism is arranged on the turntable; the whole special-shaped pipe feeding device is of a symmetrical structure. The special-shaped pipe feeding device comprises a bottom plate, a guide rail, a sliding block, a mounting plate, a first connecting plate, a first air cylinder, a clamping strip, a clamping head and an inner supporting block. According to the invention, an R angle does not need to be chamfered on the shoulder edge of the male die head, the phenomenon of material leakage during shoulder injection is avoided, and when the hose is a special-shaped hose, the deformation effect of the hose is more stable, the shape is more accurate, the product percent of pass is high, and the production efficiency is high.

Description

Technical Field

[0001] The invention relates to the technical field of shoulder injection machines, and in particular to a special-shaped tube inlet structure of a fully automatic hose shoulder injection machine. Background Art

[0002] The initial tube body of the hose is generally round. During the subsequent shoulder injection, except for most hoses on the market that use round shoulders, some hose products use elliptical, flat, square, hexagonal or other shaped shoulders. Such non-circular shoulders are collectively referred to as special-shaped shoulders, and such hoses are collectively referred to as special-shaped tubes.

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

[0004] The existing technology still has the following areas for improvement: generally, the tube feeding method of the existing hose shoulder injection machines on the market is to directly insert the hose into the male die head and the outer jacket. In order to smoothly insert the tube, the edge of the shoulder of the male die head needs to be chamfered, which leads to easy leakage during shoulder injection and low production efficiency; at the same time, the existing deformation method for hoses is artificial deformation or external deformation, which can easily lead to unstable deformation and inaccurate shape of the hose; and, when the hose to be produced is a special-shaped tube, there are cases where the deformation effect is not good and the shape has errors, and the product unqualified rate is high. Summary of the invention

[0005] In order to solve the above-mentioned problems existing in the prior art, the present invention provides a structure for a special-shaped tube inlet of a fully automatic hose shoulder injection machine, which can realize that the shoulder edge of the male die head does not need to be chamfered R angle, thereby 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.

[0006] The purpose of the present invention can be achieved through the following technical solutions: A structure for feeding a special-shaped tube of a fully automatic hose shoulder injection machine, comprising a special-shaped tube feeder, a driving mechanism, a tube-carrying prevention mechanism, a tube-inserting mechanism, a molding mechanism, a hose and a turntable, wherein the tube-carrying prevention mechanism is used to abut against the hose to prevent the position of 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 feeder 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 two guide rails are fixedly connected to the two sides of the bottom plate, the slider is slidably connected to the guide rails, the first connecting plate is connected to the slider through the mounting plate, the first cylinder is fixedly connected to the first connecting plate, two clamping strips are arranged between the first cylinders on both sides, each clamping strip is provided with two chucks, and the inner support block is arranged at the chuck; A driving mechanism for driving the mounting plate is provided on one side of the special-shaped tube feeder; The molding mechanism comprises a core rod, the outer portion of the core rod is provided with a jacket, and the top of the core rod is provided with a male die head; 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 hose, the upper part of the inner support block is provided with an annular groove, the bottom of the inner support block is provided with a groove, and the groove at the bottom of the inner support block matches the male die head.

[0007] Preferably, the driving mechanism includes a first motor, a coupling, a screw, a screw nut and a second connecting plate, the first motor is connected to the screw through the coupling, the screw nut is arranged on the screw, the screw nut is fixedly connected to the second connecting plate, a through hole is arranged on the second connecting plate, the screw passes through the through hole of the second connecting plate and is rotatably connected to the second connecting plate, and the second connecting plate is fixedly connected to the mounting plate.

[0008] Preferably, the anti-tube mechanism includes a base frame, a second cylinder and a top block, the second cylinder is arranged above the base frame, one end of the extension rod of the second cylinder is provided with an external thread, and the top block is threadedly connected to the extension rod.

[0009] Preferably, the intubation mechanism includes an intubation device, a slide rail, a second motor and a tube groove, the slide rail is fixedly connected to the middle part of one side of the base plate, the intubation device is slidably connected to the slide rail, the second motor is arranged at the top of the slide rail, the tube groove is arranged at the lower part of the base plate, the hose is arranged at the tube groove, and the position of the hose corresponds to the position of the intubation device.

[0010] Preferably, pins are provided on both side walls of the bottom groove of the inner support block, and keyways are provided on both sides of the male die head, and the pins match the keyways.

[0011] 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.

[0012] Preferably, the second connecting plate is arranged in a U shape.

[0013] Preferably, a sensor is provided on one side of the second connecting plate.

[0014] Preferably, a silicone pad is provided on the top block.

[0015] The beneficial effects of the present invention are: (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.

[0016] (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.

[0017] (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

[0018] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0019] Figure 1 A perspective view of the present invention; Figure 2 It is a first structural diagram of the special-shaped tube feeder, the driving mechanism, the anti-tube entrainment mechanism and the tube insertion mechanism in the present invention; Figure 3 It is a second structural diagram of the special-shaped tube feeder, the driving mechanism, the anti-tube entrainment mechanism and the tube insertion mechanism in the present invention; Figure 4 It is a structural diagram of the special-shaped pipe feeder in the present invention; Figure 5 It is a right side view of the special-shaped pipe feeder in the present invention; Figure 6 It is a structural diagram of the chuck and the inner support block in the present invention; Figure 7 It is a top view of a part of the special-shaped pipe feeder in the present invention; Figure 8 is a structural diagram of the driving mechanism in the present invention; Fig. 9 It is a structural diagram of the anti-belt pipe mechanism in the present invention; Fig.10 It is a structural diagram of the cannula mechanism in the present invention; Fig.11 It is a cross-sectional view of the special-shaped tube feeder and the forming mechanism in the present invention when they are in cooperation; Fig.12 It is a schematic diagram of a part of the forming mechanism in the present invention; Description of main component symbols: In the figure: 101, special-shaped tube feeder; 202, driving mechanism; 303, anti-tube mechanism; 404, tube insertion 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, screw rod; 14, screw rod nut; 15, second connecting plate; 16, sensor; 17, bottom frame; 18, second cylinder; 19, extension rod; 20, top block; 21, silicone pad; 22, tube inserter; 23, slide rail; 24, second motor; 25, mandrel; 26, turntable; 27, outer sleeve; 28, male die head; 29, tube groove; 30, hose; 31, pin; 32, keyway. DETAILED DESCRIPTION

[0020] 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.

[0021] 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.

[0022] 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; 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; 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.

[0023] The anti-belting mechanism 303 includes a base frame 17, a second cylinder 18 and a top block 20. The second cylinder 18 is arranged above the base frame 17. One end of the extension rod 19 of the second cylinder 18 is provided with an external thread. The top block 20 is threadedly connected to the extension rod 19.

[0024] The insertion 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 base plate 1, the tube inserter 22 is slidably connected to the slide rail 23, the second motor 24 is arranged at the top of the slide rail 23, the tube groove 29 is arranged at the lower part of the base plate 1, and the hose 30 is arranged at the tube groove 29. The position of the hose 30 corresponds to the position of the tube inserter 22; the molding mechanism 505 includes a core rod 25, the outer sleeve of the core rod 25 is provided with a jacket 27, and the top of the core rod 25 is provided with a male mold head 28.

[0025] The inner support block 10 is arranged in an integrated manner from top to bottom, and the upper part of the inner support block 10 is arranged in a cylindrical shape. The circular diameter of the upper part of the inner support block 10 is smaller than the diameter of the hose 30, so that the hose 30 can smoothly pass through the inner support block 10, which is convenient for entering the tube. The upper part of the inner support block 10 is provided with an annular groove, and the bottom of the inner support block 10 is provided with a groove. The groove at the bottom of the inner support block 10 matches the male die head 28; pins 31 are provided on both side walls of the groove at the bottom of the inner support block 10, and key grooves 32 are provided on both sides of the male die head 28. The pins 31 and the key grooves 32 match each other, which can effectively prevent the inner support block 10 from being caught in the male die head 28 when it is seated. In order to improve the production efficiency by setting the inner support block 10, the shoulder edge of the male die head 28 does not need to be chamfered, thus 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 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 10 can be adjusted according to needs. The inner support block 10, the outer sleeve 27 and the male die head 28 cooperate to produce special-shaped tubes of various shapes. Compared with deformation from the outside, the deformation effect of the hose 30 is more stable, the shape is more precise, the product qualification rate is high, and the production efficiency is high.

[0026] One end of the clamp 9 is semicircular, and the semicircular sections of the clamp 9 on the two clamp strips 8 are opposite to each other. The semicircular section of the clamp 9 matches the annular groove of the inner support block 10, which is convenient for clamping the inner support block 10; the second connecting plate 15 is U-shaped; a sensor 16 is provided on one side of the second connecting plate 15; a silicone pad 21 is provided on the top block 20, which plays a buffering role and can also avoid the hose 30 from being damaged or deformed.

[0027] The working principle and use process of the present invention are as follows: in the initial state, the special-shaped tube feeder 101 is in a waiting state, that is, the first cylinder 6 and the clamping strip 8 are in a combined state, and the chuck 9 clamps the inner support block 10. At this time, the first connecting plate 5, the first cylinder 6, the clamping strip 8, the chuck 9 and the inner support block 10 are located below the tube groove 29 and above the core rod 25.

[0028] When the turntable 26 rotates and brings the core rod 25 to the tube feeding station, the first motor 11 rotates first, driving the screw rod 13 to rotate, and the screw rod 13 drives the screw nut 14 and the second connecting plate 15 to move downward along the Z-axis direction through the screw rod 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 chuck 9 and the inner support block 10 in the special-shaped tube feeder 101 to move downward. When the lower groove of the inner support block 10 moves to fully fit with the male die head 28, the first motor 11 stops rotating, and the special-shaped tube feeder 101 stops moving downward.

[0029] The first cylinder 6 is controlled to open, driving the clamping strip 8 and the chuck 9 to move in opposite directions to release the inner support block 10, and the special-shaped tube feeder 101 is controlled to move downward to make way for the tube inserter 22 to avoid interference. The second motor 24 is controlled to start, and the tube inserter 22 moves downward along the Z axis through the slide rail 23, pushing the hose 30 placed at the tube groove 29 downward, passing through the inner support block 10 and inserting it into the outer jacket 27, until the upper edge of the hose 30 is about 2 mm higher than the outer jacket 27, and the tube inserter 22 is controlled to lift up along the Z axis through the slide rail 23. The special-shaped tube feeder 101 is controlled to move upward, and when the semicircular section of the chuck 9 is aligned with the annular groove of the inner support block 10, the first cylinder 6 is controlled to combine and drive the clamping strip 8 and the chuck 9 to move in a direction close to each other, and the chuck 9 clamps the inner support block 10, and the special-shaped tube feeder 101 is controlled to move upward and return to the initial waiting state. That is, the height of the chuck 9 is higher than the male die head 28, and the turntable 26 rotates counterclockwise to continue the tube feeding work of the next group of core rods 25.

[0030] When the special-shaped tube feeder 101 is lifted upward, the anti-tube mechanism 303 works, the extension rod 19 of the second cylinder 18 extends, and the silicone pad 21 of the top block 20 supports the hose 30 to prevent the inner support block 10 from detaching from the hose 30 upward, thereby driving the hose 30 to be lifted upward.

[0031] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A structure for feeding a special-shaped tube of a fully automatic hose shoulder injection machine, characterized in that: It includes a special-shaped tube feeder, a driving mechanism, a tube-carrying prevention mechanism, a tube-inserting mechanism, a molding mechanism, a hose and a rotating disk, wherein the tube-carrying prevention mechanism is used to abut against the hose to prevent the hose from being displaced, the tube-inserting mechanism is used to insert the hose into the molding mechanism, and the molding mechanism is arranged on the rotating disk; The special-shaped tube feeder 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 two guide rails are fixedly connected to the two sides of the bottom plate, the slider is slidably connected to the guide rails, the first connecting plate is connected to the slider through the mounting plate, the first cylinder is fixedly connected to the first connecting plate, two clamping strips are arranged between the first cylinders on both sides, each clamping strip is provided with two chucks, and the inner support block is arranged at the chuck; A driving mechanism for driving the mounting plate is provided on one side of the special-shaped tube feeder; The molding mechanism comprises a core rod, the outer portion of the core rod is provided with a jacket, and the top of the core rod is provided with a male die head; 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 hose, the upper part of the inner support block is provided with an annular groove, the bottom of the inner support block is provided with a groove, and the groove at the bottom of the inner support block matches the male die head.

2. The structure of the special-shaped tube inlet of the fully automatic hose shoulder injection machine according to claim 1, characterized in that: The driving mechanism includes a first motor, a coupling, a screw, a screw nut and a second connecting plate. The first motor is connected to the screw through the coupling. The screw nut is arranged on the screw. The screw nut is fixedly connected to the second connecting plate. A through hole is arranged on the second connecting plate. The 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 tube inlet of the fully automatic hose shoulder injection machine according to claim 1, characterized in that: The anti-belt tube mechanism comprises a base frame, a second cylinder and a top block, wherein the second cylinder is arranged above the base frame, one end of the extension rod of the second cylinder is provided with an external thread, and the top block is threadedly connected with the extension rod.

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

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

6. The structure of the special-shaped tube inlet of the fully automatic hose shoulder injection machine according to claim 1, characterized in that: One end of the clamp is semicircularly arranged, and the semicircular sections of the clamp on the two clamp strips are arranged opposite to each other, and the semicircular sections of the clamp match the annular groove of the inner support block.

7. The structure of the special-shaped tube inlet of the fully automatic hose shoulder injection machine according to claim 1, characterized in that: The second connecting plate is arranged in a U shape.

8. The structure of the special-shaped tube inlet of the fully automatic hose shoulder injection machine according to claim 1, characterized in that: A sensor is disposed on one side of the second connecting plate.

9. The structure of the special-shaped tube inlet of the 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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