Chuck distance adjusting structure of post-inflation device

Abstract

The utility model provides a chuck distance adjusting structure of a post-inflation device. The chuck distance adjusting structure comprises a fixed beam, a locking rod, an upper chuck seat, an upper chuck, a lower chuck seat and a lower chuck, the device further comprises an adjusting stud, an inner nut, an outer nut, a distance adjusting inner nut, a guide rod, a driven gear, a driving gear and a speed reducer. The adjusting stud is arranged on the locking rod in a sleeving manner; the inner and outer nuts are sleeved on the adjusting stud, and transmission threads on the inner side of the inner and outer nuts are matched with transmission threads on the outer side of the adjusting stud; transmission threads are arranged on the inner side of the distance adjusting inner nut and are matched with the transmission threads on the outer side of the inner nut and the outer side of the outer nut; the guide rod penetrates through the guide seat; the driven gear is fixedly connected to the upper end of the internal and external nut; and the driving gear is meshed with the driven gear. According to the utility model, the distance between the upper chuck and the lower chuck of the post-inflation device can be electrically adjusted, and an operator does not need to directly and manually adjust the distance between the chucks on a machine table, so that the adjusting process is more convenient, the adjusting efficiency and accuracy are improved, and the operation safety of the operator is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of tire vulcanization shaping, in particular to a clamping plate distance adjustment structure of a rear inflation device. Background Art

[0002] The post-inflation device is an important part of the tire vulcanizer. It is used to inflate, cool and shape the tires with high temperatures after vulcanization in the vulcanizer. For tires with nylon or polyester fiber cords as the skeleton material, due to their large elongation and thermal shrinkage characteristics, the tires will collapse and have irregular surfaces when they are just vulcanized. Therefore, after the tires are vulcanized and demolded, they should be quickly inflated with internal pressure through the post-inflation device while the temperature is still high, so that the tires can be cooled and shaped under tension to maintain the correct size and physical properties of the tires, avoid defects such as concave tire surface and bead deformation caused by the cooling of the tires in the natural state, reduce permanent deformation of the tire carcass, and ensure the quality of the tires.

[0003] The general four-station flip-type rear inflation device mainly includes a frame, a central device, a movable beam, a fixed beam, a flip mechanism and a roller. Figure 7 As shown, each central device of the rear inflation device corresponds to an inflation station, which includes upper and lower chucks, upper and lower disc seats, a locking rod 2, a stud 18, a positioning plate 19, etc. One end of the locking rod 2 is connected and fixed to the fixed beam 1, the upper and lower disc seats are sleeved on the locking rod 2, the upper chuck 31 is adaptively connected to the upper disc seat 3, the lower chuck 41 is adaptively connected to the lower disc seat 4, the upper and lower chucks are positioned relative to each other and are used to clamp the inflated and cooled tire, the lower disc seat 4 is fixedly connected to the movable beam 6, and the movable beam 6 can be controlled to rise and fall by a lifting cylinder (not shown in the figure) connected thereto. During operation, the movable beam 6 is first driven down by the lifting cylinder, and the movable beam 6 drives the lower chuck 41 to move down. Then, the tire that needs to be inflated and cooled is transported to the inflation station through external equipment such as rollers, and the tire is placed on the lower chuck 41. The movable beam 6 and the lower chuck 41 are then driven up by the lifting cylinder, so that the upper and lower chucks are in contact with and clamp the tire, and the tire surface is compacted and sealed. The rear inflation device inflates, cools and shapes the tire. After the processing is completed, the lower chuck 41 is driven down by the lifting cylinder, and the processed tire is moved away from the inflation station by rollers and other equipment to the subsequent process.

[0004] Since the range of motion of the lifting cylinder is fixed, that is, the position of the movable beam and the lower chuck is fixed, when changing tires of different specifications for inflation and cooling, it is necessary to adjust the distance between the upper and lower chucks, that is, the chuck spacing, so that the rear inflation device can compact and seal the tire during processing. Figure 7As shown, the lower disc seat 4 needs to be rotated manually, and the lower disc seat 4 is connected to the stud 18 by a threaded connection, so that the lower disc seat 4 can move up and down along the stud 18, thereby adjusting the chuck spacing a between the upper and lower chucks to match the tire specifications. After adjusting the chuck spacing a, the positioning plate 19 is inserted into the groove of the lower disc seat to fix its position and prevent it from loosening. However, the above-mentioned distance adjustment structure relies on manual operation. Whenever a tire of different specifications needs to be replaced, the operator needs to climb onto the machine and manually adjust the chuck spacing in the above manner, and the chuck spacing of each station needs to be adjusted separately. The equipment has a low degree of automation and is not convenient to operate. In addition, due to the heavy weight of the lower disc seat, the operator needs to provide a large force to rotate it to change its position, which makes the work intensity high and the adjustment speed slow, resulting in extended processing time and low efficiency. It is difficult to accurately adjust the distance by manual force, which reduces the adjustment accuracy. In addition, when the operator performs the above-mentioned processing, he needs to be directly close to the working machine equipment, so there is still a certain safety risk. Utility Model Content

[0005] The utility model aims to provide a chuck distance adjustment structure for a rear inflation device, which can realize the electric distance adjustment of the upper and lower chucks of the rear inflation device. The operator does not need to manually adjust the chuck distance directly on the machine, which makes the adjustment process more convenient, improves the adjustment efficiency and accuracy, and ensures the operator's operating safety.

[0006] A chuck distance adjustment structure of a rear inflation device comprises a fixed beam, a locking rod, an upper disc seat, an upper chuck, a lower disc seat, and a lower chuck, wherein the upper end of the locking rod is fixedly connected to the fixed beam, the upper disc seat and the lower disc seat are both sleeved on the locking rod, the upper chuck is adapted to be installed on the outer side of the upper disc seat, and the lower chuck is adapted to be installed on the outer side of the lower disc seat and is opposite to the upper chuck; it also comprises an adjusting stud, an inner and outer screw nut, an inner screw nut for adjusting the distance, a guide rod, a driven gear, and a driving gear, wherein:

[0007] The adjusting stud is sleeved on the locking rod, the upper end is fixedly connected to the fixed beam, the outer side is provided with a transmission thread, and the outer side is connected to a guide seat facing the vertical direction;

[0008] The inner and outer nut sleeves are arranged on the adjusting stud, and the inner and outer sides are provided with transmission threads with opposite rotation directions, and the transmission threads on the inner side are matched with the transmission threads on the outer side of the adjusting stud;

[0009] The adjustable inner screw nut is sleeved on the inner and outer screw nuts, and has a transmission thread on the inner side that matches with the outer transmission thread of the inner and outer screw nuts, and its lower end is fixedly connected to the upper disc seat;

[0010] The lower end of the guide rod is fixedly connected to the distance-adjusting inner nut, and the upper end thereof passes through the guide seat and can move up and down in the guide seat;

[0011] The driven gear is fixedly connected to the upper ends of the inner and outer screw nuts;

[0012] The driving gear is a cylindrical structure, and its outer side is meshed with the driven gear. The tooth width of the driving gear is greater than the tooth width of the driven gear, so that the driven gear will not be separated from the driving gear when it moves up and down with the inner and outer screw nuts. The upper end of the driving gear is provided with a connecting hole with a keyway;

[0013] A reducer is fixedly connected to the fixed beam, and the reducer is provided with an output shaft. The output shaft is provided with a key that matches the keyway. The output shaft is connected to the driving gear by inserting into the connecting hole and matching the key with the keyway. A gland is fixed to the end of the output shaft by bolts so that the output shaft will not be separated from the driving gear, and the driving gear is driven to rotate by the output shaft of the reducer.

[0014] In some embodiments, the upper disc seat is connected to a tire-lifting cylinder, and the tire-lifting cylinder can push the upper disc seat to move up and down.

[0015] In some embodiments, a distance-adjusting ruler with a scale is fixedly mounted on the fixed beam, and a distance-adjusting pointer with an arrow is connected to the distance-adjusting inner nut, and the arrow of the distance-adjusting pointer can point to the scale on the distance-adjusting ruler.

[0016] In some embodiments, telescopic brackets are connected to both sides of the upper disc seat, and tire pushing cylinders are provided on the telescopic brackets.

[0017] In some embodiments, the transmission threads on the adjusting stud, the inner and outer nuts, and the adjustable inner nut are all trapezoidal threads.

[0018] In some embodiments, the reducer is specifically an on-shaft worm gear reduction motor.

[0019] In some embodiments, a movable beam is fixedly connected to the lower end of the lower disc seat, and a lifting cylinder is connected to the movable beam to drive the movable beam to move up and down.

[0020] In some embodiments, a locking portion is provided at the lower end of the locking rod, and a locking groove matching the locking portion is provided in the lower disc seat. When the locking groove is positioned relative to the locking portion, the locking portion can move in and out of the locking groove. When the locking portion extends into the locking groove and is misplaced, the locking portion can be prevented from detaching from the locking groove.

[0021] In some embodiments, the locking rod is connected to a brake arm that allows the locking rod to rotate around its central axis.

[0022] During the working process of the utility model, when it is necessary to replace tires of different specifications for inflation and cooling, the operator can control the reducer connected to the fixed beam to work in a set operating mode. Since the output shaft of the reducer is connected to the connecting hole of the driving gear, the driving gear can be driven to rotate in a set direction, and the driving gear drives the driven gear meshing with it to rotate. The rotation of the driven gear causes the inner and outer nuts fixedly connected thereto to rotate around the locking rod; since the transmission threads on the inner sides of the inner and outer nuts match the transmission threads on the outer sides of the adjusting studs, the inner and outer nuts can move axially along the locking rod in a direction close to or away from the fixed beam during the rotation process; and the transmission threads on the outer sides of the inner and outer nuts match the transmission threads on the inner side of the adjustable inner nut, and the transmission threads on the inner and outer sides of the inner and outer nuts are matched. The thread rotation direction is opposite, so the adjustable inner nut will also move in the same direction as the inner and outer nuts; and at this time, the guide rod connected and fixed to the adjustable inner nut will be restricted by the guide seat passing through it, causing the guide rod to move in the vertical direction of the guide seat. Therefore, the adjustable inner nut moves axially along the locking rod under the guidance of the guide rod without rotating and tilting, thereby ensuring a good subsequent inflation sealing effect, and its relative movement speed of the adjusting stud is twice the movement speed of the inner and outer nuts relative to the adjusting stud; the adjustable inner nut can drive the upper disc seat and the upper chuck to be fixedly connected thereto to move axially in the same direction, so that the upper chuck is close to or away from the position of the lower chuck, thereby changing the chuck spacing until it is adapted to the tire specifications, causing the reducer to stop working, and subsequent processing can be carried out. Therefore, the beneficial effects of the present invention are as follows: when the rear inflation device needs to adjust the chuck spacing, the operator can control the rotation time of the reducer and the rotation direction of the output shaft. Under the rotation of the gear and the conduction of the transmission thread, the movement position of the upper chuck in the axial direction of the locking rod can be controlled, thereby adjusting the chuck spacing of the workstation according to the specifications of the tire. The operator does not need to directly climb onto the machine to use operating tools to manually adjust the chuck position on each workstation, making the chuck spacing adjustment process more convenient and controlled by the reducer to improve the automation level of the equipment; the operator does not need to apply force manually, reducing the work intensity; and the above-mentioned structure can make the movement speed during adjustment faster, which can effectively shorten the time for adjusting the chuck, improve the adjustment efficiency, and can more conveniently control the movement direction of the chuck, thereby improving the accuracy of adjustment; during adjustment, the operator does not need to approach the working machine station, thereby ensuring the operator's work safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The utility model is further described below in conjunction with the accompanying drawings:

[0024] Figure 1 It is a schematic diagram of the main structure of a chuck distance adjustment structure of a rear inflation device of the utility model;

[0025] Figure 2It is a side structural schematic diagram of a chuck distance adjustment structure of a rear inflation device of the utility model;

[0026] Figure 3 It is a structural schematic diagram of the reducer, driving gear and driven gear of the utility model;

[0027] Figure 4 yes Figure 3 A schematic diagram of the structure from another perspective;

[0028] Figure 5 yes Figure 3 A schematic diagram of a top view structure;

[0029] Figure 6 yes Figure 1 Schematic diagram of the structure along the AA direction;

[0030] Figure 7 It is a schematic diagram of a distance adjustment structure of a rear inflation device in the prior art;

[0031] Figure numerals: 1-fixed beam, 11-adjusting stud, 12-inner and outer nuts, 13-adjusting inner nut, 14-guide rod, 15-driven gear, 16-driving gear, 17-guide seat, 18-stud, 19-positioning plate, 2-locking rod, 20-tire-pushing cylinder, 21-adjusting pointer, 22-adjusting scale, 3-upper disc seat, 31-upper chuck, 32-telescopic bracket, 33-tire-pushing cylinder, 4-lower disc seat, 41-lower chuck, 42-locking part, 43-locking groove, 44-brake arm, 5-reducer, 51-output shaft, 52-connecting hole, 53-pressure cover, 6-movable beam, 9-tire. DETAILED DESCRIPTION

[0032] The technical scheme in the embodiment of the utility model is further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field based on the utility model belong to the scope of protection of the utility model.

[0033] It should be noted that if there are directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial...), then the directional indication is only used to explain the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly, so it cannot be understood as a limitation on the present invention. In the description of the embodiments, unless otherwise clearly specified and limited, the terms such as "installation" and "connection" should be understood in a broad sense. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. In addition, in the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly specified and limited.

[0034] like Figures 1 to 3 As shown, the utility model provides a chuck distance adjustment structure of a rear inflation device, including a fixed beam 1, a locking rod 2, an upper disc seat 3, an upper chuck 31, a lower disc seat 4, and a lower chuck 41. The upper end of the locking rod 2 is fixedly connected to the fixed beam 1, and the upper disc seat 3 and the lower disc seat 4 are both sleeved on the locking rod 2. The upper chuck 31 is adapted to be installed on the outer side of the upper disc seat 3, and the lower chuck 41 is adapted to be installed on the outer side of the lower disc seat 4 and is opposite to the upper chuck 31; it also includes an adjusting stud 11, an inner and outer screw nut 12, an adjustable inner screw nut 13, a guide rod 14, a driven gear 15, and a driving gear 16, wherein:

[0035] The adjusting stud 11 is sleeved on the locking rod 2, the upper end of which is fixedly connected to the fixed beam 1, the outer side of which is provided with a transmission thread, and the outer side is connected with a guide seat 17 in the vertical direction;

[0036] The inner and outer nut 12 is sleeved on the adjusting stud 11, and the inner and outer sides are provided with transmission threads with opposite rotation directions, and the transmission threads on the inner side cooperate with the transmission threads on the outer side of the adjusting stud 11;

[0037] The adjustable inner screw nut 13 is sleeved on the inner and outer screw nuts 12, and has a transmission thread on the inner side thereof and matches with the outer transmission thread of the inner and outer screw nuts 12, and its lower end is fixedly connected to the upper disc seat 3;

[0038] The lower end of the guide rod 14 is fixedly connected to the distance-adjusting inner screw nut 13, and the upper end thereof passes through the guide seat 17 and can move up and down in the guide seat 17;

[0039] The driven gear 15 is fixedly connected to the upper end of the inner and outer screw nuts 12;

[0040] The driving gear 16 is a cylindrical structure, and its outer side is meshed with the driven gear 15. The tooth width of the driving gear 16 is greater than the tooth width of the driven gear 15, so that the driven gear 15 will not be separated from the driving gear 16 when it moves up and down with the inner and outer screw nuts 12. The upper end of the driving gear 16 is provided with a connecting hole 52 with a keyway;

[0041] The fixed beam 1 is fixedly connected with a reducer 5, and the reducer 5 is provided with an output shaft 51. The output shaft 51 is provided with a key adapted to the keyway. The output shaft 51 is connected to the driving gear 16 by inserting into the connecting hole 52 and adapting the key to the keyway. The end of the output shaft 51 is fixed with a pressure cover 53 by bolts, so that the output shaft 51 will not be separated from the driving gear 16, and the output shaft 51 of the reducer 5 drives the driving gear 16 to rotate.

[0042] During the operation of the utility model, when it is necessary to replace tires 9 of different specifications for inflation and cooling, the operator can control the reducer 5 connected to the fixed beam 1 to work according to the set operation mode, such as Figures 3 to 5 As shown, since the output shaft 51 of the reducer 5 is connected to the connecting hole 52 of the driving gear 16, the driving gear 16 can be driven to rotate in a set direction, and the driving gear 16 drives the driven gear 15 meshing with it to rotate. The rotation of the driven gear 15 causes the inner and outer nuts 12 fixedly connected thereto to rotate around the locking rod 2.

[0043] The driving gear 16 is configured as a cylindrical structure, which is hollow inside, so as to reduce its weight and save material costs. Figure 3 and Figure 4 As shown, the tooth width of the driving gear 16, that is, the axial length of the gear, is greater than the tooth width of the driven gear 15, so that when the inner and outer screw nuts 12 drive the driven gear 15 to move up and down, the driven gear 15 will not be separated from the axial range of the driving gear 16, ensuring that the driving gear 16 and the driven gear 15 always remain in meshing during operation, and the contact line between the two remains at the tooth width of the driven gear 15, and the contact line length will not be reduced. The radius of the driven gear 15 can be as follows Figure 5 As shown, it is set to be smaller than the radius of the driving gear 16, so that the rotation speed of the driven gear 15 is slightly slower than that of the driving gear 16, so that the subsequent up and down movement of the inner and outer screw nuts 12 is smooth, which is convenient for accurately adjusting the chuck spacing.

[0044] Since the transmission threads on the inner side of the inner and outer screw nuts 12 match the transmission threads on the outer side of the adjusting stud 11, the inner and outer screw nuts 12 can move axially along the locking rod 2 in the direction close to or away from the fixed beam 1 during the rotation process; and the transmission threads on the outer side of the inner and outer screw nuts 12 match the transmission threads on the inner side of the distance-adjusting inner screw nut 13, and the transmission threads on the inner and outer sides of the inner and outer screw nuts 12 rotate in opposite directions, so the distance-adjusting inner screw nut 13 will also move in the same moving direction as the inner and outer screw nuts 12, that is, the distance-adjusting inner screw nut 13 and the inner and outer screw nuts 12 both move axially in the same direction close to or away from the fixed beam 1. Since the up and down movement of the distance-adjusting inner screw nut 13 is transmitted through the two-stage transmission thread structure, its moving speed relative to the adjusting stud 11 is twice the moving speed of the inner and outer screw nuts 12 relative to the adjusting stud 11, and it can move to the desired position faster during adjustment.

[0045] The adjustable inner nut 13 can drive the upper disc seat 3 and the upper chuck 31 fixedly connected thereto to move axially in the same direction, so that the upper chuck 31 is close to or away from the position of the lower chuck 41, thereby changing the distance between the chucks, until it is adapted to the specifications of the tire 9, and then the reducer 5 is controlled to stop working, the upper disc seat 3 and the upper chuck 31 stop moving, and the position is fixed, so that the subsequent inflation and cooling processing of the tire 9 can be carried out.

[0046] When the adjustable inner screw nut 13 moves, the guide rod 14 connected and fixed to the adjustable inner screw nut 13 will be restricted by the guide seat 17 passing through the upper part thereof, so that the guide rod 14 moves in the vertical direction of the guide seat 17. Therefore, the adjustable inner screw nut 13 moves axially along the locking rod 2 under the guidance of the guide rod 14 without rotating and tilting, thereby ensuring a good subsequent inflation and sealing effect. The number of guide rods 14 and their corresponding guide seats 17 to be installed is not specifically limited here, and can be as follows: Figure 1 As shown, a set of guide rods 14 and their corresponding guide seats 17 are installed on both sides of the workstation to achieve a better limiting effect on the distance adjusting inner screw nut 13.

[0047] Specifically, Figure 1 As shown, the lower end of the lower disc seat 4 is fixedly connected to a movable beam 6, and the movable beam 6 is connected to a lifting cylinder (not shown in the attached figure) that can drive the movable beam 6 to move up and down. With the above structure, when the rear inflation device clamps and unloads the tire 9, the lifting cylinder controls the lifting of the movable beam 6 to drive the lower disc seat 4 and the lower clamping plate 41 to move up and down, so that when the lower disc seat 4 and the lower clamping plate 41 move up, the tire 9 is moved to the rear inflation device station, and the tire 9 is clamped with the upper clamping plate 31, and when the lower disc seat 4 and the lower clamping plate 41 move down, the tire 9 is driven away from the rear inflation device station.

[0048] After the adjustment of the chuck spacing is completed, the rear inflation device is used to inflate, cool and shape the tire 9. First, the movable beam 6 is driven to descend by the lifting cylinder, and the movable beam 6 drives the lower chuck 41 to move downward, and then the tire 9 is transported by the external transportation equipment below, such as a roller, to be placed above the lower chuck 41, and then the movable beam 6 and the lower chuck 41 are raised by the lifting cylinder. When the lower chuck 41 rises, it drives the tire 9 above it to move upward together, so that it gradually approaches the position of the upper chuck 31. When the lower chuck 41 moves up to the chuck spacing with the upper chuck 31, the upper chuck 31 and the lower chuck 41 clamp the tire 9 and compact and seal the tire 9 surface. Then, the rear inflation device is controlled to inflate, cool and shape the tire 9. After the processing is completed, the lower chuck 41 is driven to move downward by the lifting cylinder, so that the lower chuck 41 carries the processed tire 9 and moves downward. After moving down to a certain position, other equipment, such as a roller, is used to move the tire 9 to the subsequent process for processing, and then the next tire 9 is inflated and cooled.

[0049] When the rear inflation device needs to adjust the distance between the chucks, the operator can control the rotation time of the reducer 5 and the rotation direction of the output shaft 51. Under the transmission effect of the gear rotation and the transmission thread, the movement position of the upper chuck 31 in the axial direction of the locking rod 2 can be controlled, so that the distance between the chucks of the work station can be adjusted according to the specifications of the tire 9; by setting the guide seat 17, the guide rod 14 can be further stabilized in the vertical direction to play a good guiding role, avoiding the upper chuck 31 from tilting during the movement process, and ensuring that the rear inflation device has a good inflation sealing effect during subsequent inflation and cooling.

[0050] The beneficial effect of the utility model is that the operator does not need to directly climb onto the machine to use operating tools to manually adjust the position of the chucks on each workstation when adjusting the distance, which makes the process of adjusting the chuck spacing more convenient and is controlled by the reducer 5 to improve the degree of automation of the equipment; the operator does not need to apply force manually, which reduces his work intensity; and the above-mentioned structure can make the movement speed during adjustment faster, which can effectively shorten the time for adjusting the chuck, improve the adjustment efficiency, and can more conveniently control the movement direction of the chuck, thereby improving the accuracy of adjustment; the operator does not need to be close to the working machine station during adjustment, thereby ensuring the operator's work safety.

[0051] In some embodiments, Figure 1 and Figure 2As shown, the upper disc seat 3 is connected to a tire-lifting cylinder 20, and the tire-lifting cylinder 20 can push the upper disc seat 3 to move up and down. Before the tire 9 is inflated, cooled and shaped, the tire-lifting cylinder 20 is used to push the upper disc seat 3 toward one side of the tire 9 through its piston rod, driving the upper clamping plate 31 to provide extrusion force to the tire 9, and cooperating with the lower clamping plate 41 to clamp and compact the tire surface, and then inflate and cool it to make the tire 9 firmly sealed, so as to prevent the tire 9 from leaking during the inflation process, resulting in poor shaping effect, or causing safety accidents due to unstable position.

[0052] In some embodiments, Figure 1 As shown, a distance-adjusting ruler 22 with a scale is fixedly installed on the fixed beam 1, and a distance-adjusting pointer 21 with an arrow is connected to the distance-adjusting inner nut 13, and the arrow of the distance-adjusting pointer 21 can point to the scale on the distance-adjusting ruler 22. The up and down movement of the distance-adjusting inner nut 13 can drive the distance-adjusting pointer 21 connected thereto to change its position up and down, so that its arrow points to different scale positions on the distance-adjusting ruler 22. Therefore, the operator can easily check the specific distance value of the adjustment by observing the scale pointing of the distance-adjusting pointer 21 on the distance-adjusting ruler 22, so as to confirm the adjustment of the chuck spacing, thereby setting a suitable chuck spacing, eliminating the step of manual measurement, further facilitating the distance-adjusting process of the operator, and further improving the accuracy of the distance adjustment. Since the tire-lifting cylinder 20 is connected to the upper disc seat 3 during the distance adjustment process, and the upper disc seat 3 is also fixedly connected to the distance-adjusting inner nut 13, it can be as shown in the figure. Figure 1 As shown, the distance adjustment pointer 21 is installed on the tire-lifting cylinder 20, and the distance adjustment pointer 21 is connected to the distance adjustment inner screw nut 13 through the tire-lifting cylinder 20, so that the distance adjustment pointer 21 can move up and down with the lifting and lowering of the upper disc seat 3 and the distance adjustment inner screw nut 13, making the installation more convenient. Of course, the connection between the distance adjustment pointer 21 and the distance adjustment inner screw nut 13 can also be other ways, which are not specifically limited here.

[0053] In some embodiments, Figure 1 and Figure 2 As shown, the upper disc seat 3 is connected to telescopic brackets 32 on both sides, and a tire-pushing cylinder 33 is provided on the telescopic brackets 32. When the rear inflation device is inflated and the tire is unloaded, the tire 9 is easily adhered to the upper chuck 31 and cannot be automatically and quickly removed in a short time, resulting in the lower chuck 41 not being able to smoothly carry the tire 9 down when it moves down, affecting the subsequent moving process. Therefore, the tire-pushing cylinder 33 is installed on the left and right sides of the upper disc seat 3 through the telescopic brackets 32, so that the tire 9 can be pushed to fall off and separate from the upper chuck 31 faster after the inflation process is completed. The telescopic bracket 32 ​​is provided with slots, and the telescopic bracket 32 ​​can adjust the position of the tire-pushing cylinder 33 according to different tire diameters, so that it can align and smoothly push the tire 9, unload the tire 9 from the workstation, and improve the working speed.

[0054] In some embodiments, the transmission threads on the adjusting stud 11, the inner and outer nuts 12, and the adjustable inner nut 13 are all trapezoidal threads. The trapezoidal threads have a low manufacturing cost, good self-locking properties, and can withstand large loads. Therefore, they can reduce loosening or falling off caused by vibration or external forces, making them more stable. Moreover, their transmission effect is relatively efficient, and they can effectively convert the rotational motion between the stud and the nut into linear axial motion, making the position adjustment more precise.

[0055] In some embodiments, the reducer 5 is specifically an on-axis worm gear reduction motor. A worm transmission structure composed of a worm and a worm wheel is arranged inside the reducer 5. This structure facilitates obtaining a larger transmission ratio. When the driving gear 16 is driven to rotate, the driving gear 16 can be set to rotate smoothly at a lower and appropriate speed, so that the driven gear 15, the inner and outer screw nuts 12, the adjustable inner screw nut 13, etc. driven by it can all move smoothly, and it is convenient for the operator to adjust the chuck position more accurately and improve the adjustment accuracy of the chuck spacing; it has a compact structure, small size, and light weight, which can save occupied space, and it works smoothly, with relatively small impact, vibration, and noise during operation, and is suitable for complex factory environments.

[0056] In some embodiments, Figure 1 As shown, the lower end of the locking rod 2 is provided with a locking portion 42, and the lower disc seat 4 is provided with a locking groove 43 matched with the locking portion 42. When the locking groove 43 is positioned relative to the locking portion 42, the locking portion 42 can move in and out of the locking groove 43. When the locking portion 42 extends into the locking groove 43 and is misaligned, the locking portion 42 can be prevented from being separated from the locking groove 43. Through the above structure, when the upper and lower chucks clamp the tire 9 for inflation, the locking effect of the locking portion 42 and the locking groove 43 prevents the lower disc seat 4 and the lower chuck 41 from being separated from the locking rod 2, ensuring that the lower chuck 41 will not deviate or fall off during inflation and cooling, and ensuring smooth inflation and cooling. Among them, the locking portion 42 can be a cross-shaped lock head, and the locking groove 43 can be a cross-shaped groove adapted thereto, or of course, it can also be other shapes, and its specific shape is not specifically limited in this solution.

[0057] Furthermore, if Figure 6As shown, the locking rod 2 is connected with a brake arm 44 that can rotate the locking rod 2 around its central axis. The locking rod 2 is rotated by changing the position of the brake arm 44, thereby changing the relative relationship between the locking portion 42 and the locking groove 43. When the lower disc seat 4 and the lower clamping plate 41 need to be locked to the locking rod 2, the locking portion 42 only needs to be aligned and inserted into the locking groove 43, and then the locking rod 2 is rotated by a certain angle through the brake arm 44, so that the locking portion 42 and the locking groove 43 are misaligned, which can play a role in blocking the disengagement. When it is necessary to disengage, just follow the reverse steps. In order to facilitate the control of the rotation of the locking rod 2, the brake arm 44 can be arranged to be connected to a push-pull cylinder, and the position of the brake arm 44 is controlled by the push-pull cylinder, so that the locking rod 2 is rotated, and the relative relationship between the locking portion 42 and the locking groove 43 is changed. Of course, other methods can also be used to control the position of the brake arm 44.

[0058] The above are only some implementation methods of the utility model, and the protection scope of the utility model is not limited thereto. Although the utility model has been described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some or all of the technical features therein can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the various embodiments of the utility model, and they should all be included in the scope of the claims and description of the utility model. Therefore, non-substantial changes or replacements made by those skilled in the art on the basis of the utility model still fall within the protection scope of the utility model.

Claims

1. A chuck distance adjustment structure of a rear inflation device, comprising a fixed beam (1), a locking rod (2), an upper disc seat (3), an upper chuck (31), a lower disc seat (4), and a lower chuck (41), wherein the upper end of the locking rod (2) is fixedly connected to the fixed beam (1), the upper disc seat (3) and the lower disc seat (4) are both sleeved on the locking rod (2), the upper chuck (31) is adapted to be installed on the outer side of the upper disc seat (3), and the lower chuck (41) is adapted to be installed on the outer side of the lower disc seat (4) and is opposite to the upper chuck (31); It is characterized in that It also includes an adjusting screw (11), an inner and outer screw nut (12), an adjustable inner screw nut (13), a guide rod (14), a driven gear (15), and a driving gear (16), wherein: The adjusting stud (11) is sleeved on the locking rod (2), the upper end of which is fixedly connected to the fixed beam (1), the outer side of which is provided with a transmission thread, and the outer side of which is connected to a guide seat (17) facing the vertical direction; The inner and outer nut (12) is sleeved on the adjusting stud (11), and has transmission threads with opposite rotation directions on the inner and outer sides, wherein the transmission threads on the inner side cooperate with the transmission threads on the outer side of the adjusting stud (11); The adjustable inner screw nut (13) is sleeved on the inner and outer screw nuts (12), and has a transmission thread on the inner side thereof and matches with the outer transmission thread of the inner and outer screw nuts (12), and its lower end is fixedly connected to the upper disc seat (3); The lower end of the guide rod (14) is fixedly connected to the distance-adjusting inner nut (13), and the upper end thereof passes through the guide seat (17) and can move up and down in the guide seat (17); The driven gear (15) is fixedly connected to the upper ends of the inner and outer screw nuts (12); The driving gear (16) is a cylindrical structure, the outer side of which meshes with the driven gear (15), the tooth width of the driving gear (16) is greater than the tooth width of the driven gear (15), so that the driven gear (15) will not be separated from the driving gear (16) when it moves up and down with the inner and outer screw nuts (12), and the upper end of the driving gear (16) is provided with a connecting hole (52) with a keyway; A reducer (5) is fixedly connected to the fixed beam (1), the reducer (5) is provided with an output shaft (51), the output shaft (51) is provided with a key adapted to the key slot, the output shaft (51) is connected to the driving gear (16) by inserting into the connection hole (52) and making the key adapted to the key slot, the end of the output shaft (51) is fixed with a gland (53) by bolts so that the output shaft (51) will not be separated from the driving gear (16), and the driving gear (16) is driven to rotate by the output shaft (51) of the reducer (5).

2. The chuck distance adjustment structure of the rear inflation device according to claim 1, characterized in that: The upper disc seat (3) is connected to a tire-lifting cylinder (20), and the tire-lifting cylinder (20) can push the upper disc seat (3) to move up and down.

3. The chuck distance adjustment structure of the rear inflation device according to claim 1, characterized in that: A distance-adjusting ruler (22) with scale is fixedly mounted on the fixed beam (1), and a distance-adjusting pointer (21) with an arrow is connected to the distance-adjusting inner nut (13), and the arrow of the distance-adjusting pointer (21) can point to the scale on the distance-adjusting ruler (22).

4. The chuck distance adjustment structure of the rear inflation device according to claim 1, characterized in that: Both sides of the upper disc seat (3) are connected with telescopic brackets (32), and the telescopic brackets (32) are provided with tire pushing cylinders (33).

5. The chuck distance adjustment structure of the rear inflation device according to claim 1, characterized in that: The transmission threads on the adjusting stud (11), the inner and outer screw nuts (12), and the distance-adjusting inner screw nut (13) are all trapezoidal threads.

6. The chuck distance adjustment structure of the rear inflation device according to claim 1, characterized in that: The reducer (5) is specifically an on-axis worm gear reduction motor.

7. The chuck distance adjustment structure of the rear inflation device according to claim 1, characterized in that: The lower end of the lower disc seat (4) is fixedly connected to a movable beam (6), and the movable beam (6) is connected to a lifting cylinder capable of driving the movable beam (6) to move upward and downward.

8. The chuck distance adjustment structure of the rear inflation device according to claim 1, characterized in that: A locking portion (42) is provided at the lower end of the locking rod (2), and a locking groove (43) matching with the locking portion (42) is provided in the lower disc seat (4); when the locking groove (43) and the locking portion (42) are positioned relative to each other, the locking portion (42) can move in and out of the locking groove (43); when the locking portion (42) extends into the locking groove (43) and is misaligned, the locking portion (42) can be prevented from being separated from the locking groove (43).

9. The chuck distance adjustment structure of the rear inflation device according to claim 8, characterized in that: The locking rod (2) is connected to a brake arm (44) which enables the locking rod (2) to rotate around its central axis.

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