A fully automatic inner tube extruder head

Abstract

The present invention discloses a fully automatic inner tube extruder head, including a through head body, a rubber material channel with a conical cross section correspondingly arranged in the head body, a core shaft correspondingly arranged in the rubber material channel, a plurality of movable plates correspondingly arranged at the discharge end of the rubber material channel, the free ends of the plurality of movable plates encircling a closed loop rubber outlet connected end to end, the connecting rod correspondingly connected to a spiral elevator, the spiral elevator correspondingly driven by a second servo motor, one end of the core shaft inserted into the rubber outlet, the worm gear correspondingly driven by a first servo motor, and a plurality of adjusting bolts correspondingly driven by a third servo motor respectively. The present invention is entirely controlled by servo motors, can be adjusted quickly and accurately, and automatically changed to adapt to inner tubes of different sizes, and the inner tube size change process does not need to be debugged by a manual wrench, and when the specifications and models of the inner tube are changed, there is no need to stop the machine for processing, which effectively saves costs.

Description

Technical Field

[0001] The invention relates to the field of supporting equipment for inner tube extruders, in particular to a full-automatic inner tube extruder head. Background Art

[0002] The existing inner tube extruder die needs to replace the die mouth tines about 10 times a day (if the specifications of the inner tube produced change, the die mouth tines need to be replaced to match), all of which are purely manual operations with high labor intensity. Since all die mouth tines are currently round, one die mouth tines must be configured for each specification of inner tube. When changing the specifications, the extruder needs to be stopped, and then the die mouth tines are manually taken out, and then the rubber inside the die is cleaned, which is time-consuming and laborious. After replacing the new die mouth tines, the machine is turned on again. After the rubber comes out, the thickness of the inner tube and the appearance shape must continue to be tested to see if they meet the requirements. After replacing the mouth tines, all parameters are changed, and the test is started from scratch, the speed is adjusted, and then the test is repeated, and then the debugging is done. Only when the standard is met, the debugging is stopped. Under normal circumstances, it takes 30 minutes to delay the production of inner tubes. In this way, the production of inner tubes is reduced by 6,000 per day, and a large amount of rubber is generated by replacing the die mouth tines, which needs to be recycled and processed again, affecting the product quality. Therefore, it is necessary to design a fully automatic inner tube extruder die head. Summary of the invention

[0003] In order to overcome the defects in the prior art, a fully automatic inner tube extruder head is provided.

[0004] The present invention is achieved through the following solutions:

[0005] A fully automatic inner tube extruder head, including a through head body, a rubber channel with a conical cross-section is correspondingly provided in the head body, a core shaft is correspondingly provided in the rubber channel, and a plurality of movable plates are correspondingly provided at the discharge end of the rubber channel, and the free ends of the plurality of movable plates form a closed-loop rubber outlet connected end to end, the other ends of the plurality of movable plates are correspondingly connected to a connecting rod, and the connecting rod is correspondingly connected to a spiral elevator, and the spiral elevator is correspondingly driven by a second servo motor, one end of the core shaft is inserted into the rubber outlet, and the other end of the core shaft extends into the rubber channel and is correspondingly connected to a worm gear, and the worm gear is correspondingly driven by a first servo motor, and the middle part of the core shaft can also be correspondingly connected to a plurality of adjustment bolts, and the plurality of adjustment bolts are respectively driven by a third servo motor.

[0006] The feed end of the head body is correspondingly provided with a connecting flange, and the connecting flange is correspondingly provided with a connecting thread. The discharge end of the head body is correspondingly provided with a head fixing ring with an isosceles trapezoidal cross-section, and a movable plate is correspondingly provided on the outside of the head fixing ring, and an outer fixing ring is also correspondingly provided on the outside of the movable plate.

[0007] One end of the core shaft extending into the rubber material channel is correspondingly connected to the diversion shuttle.

[0008] The cross section of one end of the core shaft inserted into the glue outlet is an isosceles trapezoid.

[0009] The second servo motors are two and centrally symmetrically arranged, the movable plates are four and centrally symmetrically arranged, each of the second servo motors drives a screw elevator, the screw elevator drives a connecting rod, and one connecting rod drives two adjacent movable plates accordingly.

[0010] There are four third servo motors arranged symmetrically around the center, each of the third servo motors is connected to a corresponding adjusting bolt, and the four adjusting bolts are evenly distributed on the same cross section of the core shaft.

[0011] An internal powder spraying device is correspondingly arranged at the end of one end of the core shaft inserted into the glue outlet.

[0012] The first servo motor is a corresponding one, and the first servo motor drives the worm gear, and the worm gear drives the core shaft to move away from or approach the glue outlet.

[0013] The beneficial effects of the present invention are:

[0014] The external dimensions of the mouthpiece (size of the glue outlet and the distance from the mandrel) of the head of a fully automatic inner tube extruder of the present invention are all controlled by a servo motor, which can be quickly and accurately adjusted, and automatically changed to adapt to inner tubes of different sizes. The inner tube size change process does not require manual wrench debugging, and can be controlled by directly changing parameters on the touch screen, which is very convenient, easy and fast. When changing the specifications of the inner tube, there is no need to stop the machine for processing, and the required specifications of the inner tube can be quickly adjusted. When changing the specifications of the inner tube, the adjustment time can be completed in 3-5 minutes (the traditional one takes at least 30 minutes), and the recycled rubber generated when changing the specifications of the inner tube is only about 10% of the original traditional mode, which effectively saves costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of a fully automatic inner tube extruder head of the present invention;

[0016] Figure 2 This is a schematic diagram of the main structure of a fully automatic inner tube extruder head of the present invention;

[0017] Figure 3 It is a left-side structural schematic diagram of a fully automatic inner tube extruder head of the present invention;

[0018] Figure 4 It is a cross-sectional structural schematic diagram of a fully automatic inner tube extruder head of the present invention;

[0019] Figure 5 for Figure 3 Schematic diagram of the cross-sectional structure in the FF direction;

[0020] In the figure: 1 is a connecting flange, 2 is a rubber channel, 3 is a core shaft, 4 is a movable plate, 5 is a head fixing ring, 6 is an outer fixing ring, 7 is a diverter shuttle, 8 is a worm gear, 9 is a first servo motor, 10 is a connecting rod, 11 is a screw elevator, 12 is a second servo motor, 13 is an adjusting bolt, 14 is a third servo motor, and 15 is an internal powder spraying device. DETAILED DESCRIPTION

[0021] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments:

[0022] like Figure 1-2 As shown, a fully automatic inner tube extruder head includes a through head body, a rubber channel 2 with a conical cross-section is correspondingly provided in the head body, a core shaft 3 is correspondingly provided in the rubber channel 2, and a plurality of movable plates 4 are correspondingly provided at the discharge end of the rubber channel 2, and the free ends of the plurality of movable plates 4 form a closed-loop rubber outlet (not marked in the accompanying drawings) connected end to end. The present application redesigns a new set of heads, changing the shape of the inner tube mouth (movable plate 4) from round to square, and of course the four corners of the movable plate 4 are arc-shaped.

[0023] The square movable plate 4 is designed to be movable. When the specifications and dimensions change, the glue outlet composed of four movable plates 4 can automatically expand and contract to match the required specifications and dimensions. When the square mouth is expanded and contracted, it is controlled by a servo motor (the second servo motor 12) and slides automatically. There is no need for manual wrench to debug. The precision and accuracy of the adjustment can be controlled, and a lot of manpower is saved.

[0024] The adjusting bolts 13 respectively control the offset of the mandrel 3 on the central axis of the rubber channel 2, thereby controlling the size of the four sides of the inner tube. In this embodiment, four servo motors (the third servo motor 14) are used to control the thickness of the four sides of the inner tube. The thickness of the inner tube is also controlled by using a servo motor (the first servo motor 9) to control the distance between the mandrel and the glue outlet. The control of the above three servo motors (all corresponding to matching reducers, which will not be repeated here) does not require manual wrench debugging, and the parameters can be changed directly on the touch screen to control, which is very convenient, easy and fast. The specific automatic control process and principle are well-known technologies and will not be repeated here.

[0025] The rubber channel 2 is mainly used to make the rubber flow inside the machine head body and then transport it to the rubber outlet. There is a mandrel inside the machine head for adjustment. After the servo control is adopted, the whole adjustment is very fast and accurate. The rubber outlet is mainly used to make the rubber directly become the inner tube, which is the shaping function. After the size of the rubber outlet is adjusted by the servo, there is no need to replace the outlet metal, which can effectively save time.

[0026] The rubber channel 2 is connected to the rubber outlet part. The rubber enters the rubber channel 2 from the previous process, and first passes through the rubber channel 2, which is a structure with a gradually decreasing cross-section. The rubber is squeezed and transported to the rubber outlet area. Then the rubber outlet and the core shaft 3 cooperate to shape the rubber and extrude it out of the tire tube to form an inner tube blank.

[0027] The steps for adjusting the circumference of the inner tube in this application are as follows: the second servo motor 12 (a servo motor with a power of 50W) drives the screw elevator 11, and the screw elevator 11 moves the movable plate 4 through the connecting rod 10 to adjust the circumference of the inner tube. In the specific adjustment process, the two second servo motors 12 must be driven at the same speed and circle speed at the same time to ensure that the four movable plates 4 are adjusted at the same time. The change in the position of the movable plate 4 causes the size of the glue outlet to change, thereby adjusting the circumference of the extruded inner tube.

[0028] Steps to adjust the inner tube thickness (eg Figure 5 ): The first servo motor 9 (a servo motor with a power of 50W) drives the worm gear. The rotation of the worm gear causes the core shaft matched with it to move forward and backward. The movement of the core shaft causes the distance between the core shaft and the glue outlet in four directions to change simultaneously, thereby realizing the thickness adjustment of the extruded inner tube.

[0029] Steps for adjusting the wall thickness of the inner tube: four third servo motors 14 (servo motors with a power of 200W) simultaneously drive the adjustment bolts. The adjustment bolts are converted into displacement of the adjustment bolts through threaded transmission. With the displacement of the adjustment bolts, the adjustment bolts are supported by the mandrel and the mandrel is offset in the corresponding direction. The offset of the mandrel causes the gap between the mandrel and the glue outlet to change in the upper and lower directions (or left and right directions). If the gap between the mandrel and the glue outlet is larger than the gap between the upper part and the lower part, the wall thickness of the inner tube in different directions of the extruded inner tube can be different to meet the needs of different customers. In actual adjustment, firstly, the four third servo motors 14 should be controlled to simultaneously rotate the four corresponding adjustment bolts for two turns to ensure that the adjustment bolts do not contact the mandrel. At this time, the mandrel is restored to the position of the central axis of the rubber channel 2. Then, according to different requirements for the wall thickness of the tire, the corresponding third servo motor 14 is adjusted to control the corresponding adjustment bolts, so as to control the mandrel to deviate in the set direction to obtain the required inner tube with different wall thickness.

[0030] The other ends of the multiple movable plates 4 are correspondingly connected to the connecting rod 10, the connecting rod 10 is correspondingly connected to the spiral elevator 11, the spiral elevator 11 is correspondingly driven by the second servo motor 12, one end of the core shaft 3 is inserted into the glue outlet, the other end of the core shaft 3 extends into the glue channel 2 and is correspondingly connected to the worm gear 8, the worm gear 8 is correspondingly driven by the first servo motor 9, the middle part of the core shaft 3 can also be correspondingly connected to multiple adjusting bolts 13, and the multiple adjusting bolts 13 are respectively driven by the third servo motor 14.

[0031] like Figure 3-5 As shown, the feed end of the head body is provided with a connecting flange 1, and the connecting flange 1 is provided with a connecting thread. The discharge end of the head body is provided with a head fixing ring 5 with an isosceles trapezoidal cross-section, and a movable plate 4 is provided on the outer side of the head fixing ring 5, and an outer fixing ring 6 is also provided on the outer side of the movable plate 4.

[0032] One end of the core shaft 3 extending into the rubber channel 2 is correspondingly connected to the diverter shuttle 7 .

[0033] The cross section of the end of the core shaft 3 inserted into the glue outlet is an isosceles trapezoid.

[0034] There are two second servo motors 12 arranged symmetrically at the center, and there are four movable plates 4 arranged symmetrically at the center. Each second servo motor 12 drives a screw elevator 11, and the screw elevator 11 drives a connecting rod 10. One connecting rod 10 drives two adjacent movable plates 4. Two second servo motors 12 can complete the adjustment of the movable plates 4, which not only ensures the accuracy of the adjustment, but also saves floor space, prevents the problem of being unable to be placed due to too many second servo motors 12, and can also save the purchase cost of the entire equipment.

[0035] There are four third servo motors 14 arranged symmetrically with respect to the center, each of the third servo motors 14 is connected to a corresponding adjusting bolt 13, and the four adjusting bolts 13 are evenly distributed on the same cross section of the core shaft 3, which can ensure the stability and accuracy of the adjustment of the adjusting bolts to the greatest extent.

[0036] The end of the mandrel 3 inserted into the glue outlet is provided with an inner powder spraying device 15. The inner powder spraying device 15 can spray a layer of release agent on the inner tube, and the specific spraying amount is a well-known technology and will not be repeated here.

[0037] The first servo motor 9 is a corresponding one, and the first servo motor 9 drives the worm gear 8, and the worm gear 8 drives the core shaft 3 away from or close to the glue outlet.

[0038] When the present application is working, the connecting flange 1 is connected to the rubber material outlet end of the extruder, and the rubber material passes through the rubber material channel 2, the diverter shuttle, and then the head fixing ring 5 in sequence, and finally extruded from the gap between the rubber outlet formed by the movable plate and the core shaft. During extrusion, the release agent is sprayed by the inner powder spraying device 15 to obtain the inner tube. Although the technical scheme of the present invention has been described and listed in detail, it should be understood that it is obvious to those skilled in the art to modify the above embodiments or adopt equivalent alternatives. These modifications or improvements made without departing from the spirit of the present invention are all within the scope of protection claimed by the present invention.

Claims

1. A fully automatic inner tube extruder die head, comprising a through die body, characterized in that: A rubber material channel (2) having a conical cross section is correspondingly provided in the machine head body, a core shaft (3) is correspondingly provided in the rubber material channel (2), a plurality of movable plates (4) are correspondingly provided at the material discharge end of the rubber material channel (2), the free ends of the plurality of movable plates (4) enclose a closed-loop rubber discharge port connected end to end, the other ends of the plurality of movable plates (4) are correspondingly connected to a connecting rod (10), the connecting rod (10) is correspondingly connected to a spiral elevator (11), the spiral elevator (11) is correspondingly driven by a second servo motor (12), one end of the core shaft (3) is inserted into the rubber discharge port, the other end of the core shaft (3) extends into the rubber material channel (2) and is correspondingly connected to a worm gear (8), the worm gear (8) is correspondingly driven by a first servo motor (9), the middle portion of the core shaft (3) can also be correspondingly connected to a plurality of adjustment bolts (13), the plurality of adjustment bolts (13) are respectively correspondingly driven by a third servo motor (14); The feed end of the die body is provided with a connecting flange (1), the connecting flange (1) is provided with a connecting thread, the discharge end of the die body is provided with a die fixing ring (5) with an isosceles trapezoidal cross section, a movable plate (4) is provided on the outside of the die fixing ring (5), and an outer fixing ring (6) is also provided on the outside of the movable plate (4); The second servo motors (12) are two centrally symmetrically arranged, the movable plates (4) are four centrally symmetrical plates, each of the second servo motors (12) drives a screw elevator (11), the screw elevator (11) drives a connecting rod (10), and one connecting rod (10) drives two adjacent movable plates (4) accordingly.

2. A fully automatic inner tube extruder head according to claim 1, characterized in that: One end of the core shaft (3) extending into the rubber material channel (2) is correspondingly connected to the diversion shuttle (7).

3. A fully automatic inner tube extruder head according to claim 1, characterized in that: The cross-section of the end of the core shaft (3) inserted into the glue outlet is an isosceles trapezoid.

4. A fully automatic inner tube extruder head according to claim 1, characterized in that: The third servo motors (14) are four in a centrally symmetrical arrangement, each of the third servo motors (14) is correspondingly connected to an adjustment bolt (13), and the four adjustment bolts (13) are evenly distributed on the same cross section of the core shaft (3).

5. The fully automatic inner tube extruder head according to claim 1, characterized in that: An internal powder spraying device (15) is provided correspondingly at the end of the core shaft (3) inserted into the glue outlet.

6. The fully automatic inner tube extruder head according to claim 1, characterized in that: The first servo motor (9) is a corresponding one, the first servo motor (9) drives the worm gear (8), and the worm gear (8) drives the core shaft (3) away from or close to the glue outlet.

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