Gravity type adjustable tire clamping device of tire inner spraying machine

Abstract

The invention discloses a gravity type adjustable tire clamping device of a tire inner spraying machine, and relates to the technical field of tire processing equipment, the gravity type adjustable tire clamping device comprises a clamping mechanism and a linkage mechanism, the clamping mechanism comprises a clamping block arranged on the outer side of a green tire, and the side part of the clamping block is connected with a clamping arm; the linkage mechanism comprises a driving gear and a driven gear meshed with the driving gear, the driven gear is fixedly connected with a lead screw, the lead screw is rotationally connected with a nut, and the nut is fixedly connected with the clamping arm; according to the inner spraying device, a green tire can be supported, the situation that a lower tire bead is contaminated by the inner spraying device to cause pollution is avoided, meanwhile, the linkage device is arranged, the green tire can be clamped in four directions at the same time, and the working efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of tire processing equipment, and in particular to a gravity-type adjustable tire clamping device for a tire internal spraying machine. Background Art

[0002] At present, in the tire production process, the green tire needs to be sprayed inside before vulcanization. During the spraying process of the green tire, due to repeated spraying of the nozzle, there are drips of inner spray liquid accumulated on the green tire spray tray. When the green tire is stored on the tray, it is very easy to cause the lower end of the green tire to be contaminated by the inner spray liquid, which makes it difficult to clean during vulcanization.

[0003] like Figure 1 As shown, it is a schematic diagram of the structure of the tire clamping device currently in use. When changing the specifications of the green tire, it is necessary to manually rotate the nuts on the clamping blocks in each direction separately to adjust the position of the clamping block 101 and limit the green tire. The adjustment needs to rely on the experience of the workers. If the adjustment is skewed, the green tire will fall off when the base rotates due to centrifugal force, resulting in problems such as vulcanized foreign matter and crushing of semi-finished products, affecting product quality, reducing production efficiency, wasting production costs, and being unfavorable for large-scale mass production. Summary of the invention

[0004] The purpose of the present invention is to provide a gravity-type adjustable tire clamping device for a tire internal spraying machine, which can lift the green tire to prevent the lower tire lip from being contaminated by the internal spraying device and causing pollution. At the same time, a linkage device is provided to clamp the green tire from four directions at the same time, so that the clamping force is more uniform, the clamping speed is faster, and the work efficiency can be improved.

[0005] The invention comprises a clamping mechanism and a linkage mechanism. The clamping mechanism comprises a clamping block arranged on the outer side of a green tire, and a clamping arm is connected to the side of the clamping block; the linkage mechanism comprises a driving gear and a driven gear meshing with the driving gear, and a lead screw is fixedly connected to the lead screw, and a nut is rotatably connected to the lead screw, and the nut is fixedly connected to the clamping arm.

[0006] Preferably, four driven gears are provided, and the four driven gears are evenly arranged on the circumference of the driving gear with the center of the driving gear as the center; each driven gear is connected to a lead screw, and each lead screw is connected to a clamping block through a clamping arm.

[0007] Preferably, the clamping block comprises a crescent-shaped rotating plate, the arcuate edge of which is located on the green tire side; an arc-shaped cavity is provided in the rotating plate, the cavity is located on the straight edge of the rotating plate and has an opening; a fixed plate is rotatably connected in the cavity, and the fixed plate is fixedly connected to the clamping arm.

[0008] Preferably, the fixed plate is in an arc shape, and the center of the arc of the fixed plate is located below the center line of the rotating plate.

[0009] Preferably, a plurality of small teeth are provided at intervals on the arc-shaped edge of the fixing plate, and a convex ridge meshing with the small teeth is provided on the inner wall of the concave cavity.

[0010] Preferably, an arc-shaped opening is provided on one side wall of the rotating plate, the center of the arc-shaped opening coincides with the center of the fixed plate, and a scale line is provided on the outer edge of the arc-shaped opening.

[0011] Preferably, a pointer is fixedly provided on the fixed plate, and the needle shaft of the pointer passes through the arc-shaped opening and extends out of the side wall of the rotating plate.

[0012] In summary, the present invention has the following beneficial effects:

[0013] 1. An L-shaped clamping arm is provided to lift the clamping block, so that the green tire is lifted up by the clamping arm after being clamped by the clamping block, and the green tire does not contact the rotating rod, so as to prevent the lower tire lip from being contaminated by the internal spraying device, and to prevent the green tire from falling off due to the centrifugal force of rotation, causing green tire pollution, or green tire crushing, so as to ensure product quality and reduce cost waste;

[0014] 2. The linkage mechanism drives the lead screws in four directions to move in linkage, thereby driving the four clamping blocks to approach the green tire from four directions at the same time, so that the green tire can be clamped by the clamping blocks in the front, back, left and right directions, with a faster clamping speed, improved production efficiency, more uniform clamping force, and less likely to fall off;

[0015] 3. A number of small teeth are arranged at intervals on the arc-shaped edge of the fixed plate, and a convex ridge meshing with the small teeth is arranged on the inner wall of the concave cavity; when the rotating plate is adjusted to a suitable position, the convex ridge in the concave cavity is tightly meshed with the small teeth on the outer arc-shaped edge of the fixed plate, making the clamping block more stable and not easy to loosen, and avoiding wear caused by long-term friction between the two, so that the clamping block cannot clamp the green tire tightly;

[0016] 4. An arc-shaped opening is provided on one side wall of the rotating plate, and a scale line is provided on the outer edge of the arc-shaped opening; a pointer is fixedly provided on the fixed plate, and the needle shaft of the pointer passes through the arc-shaped opening and extends out of the side wall of the rotating plate; when the rotating plate rotates around the fixed plate, the reading on the scale line indicated by the pointer can be observed, and each clamping plate can be adjusted to the same reading, so that the clamping force of the clamping block on the four sides of the green tire is the same and fixed, without relying on the workers' work experience and hand feel, which is convenient for standardized operation; in addition, when processing green tires of the same model, remember the pointer reading when the first green tire is clamped, and adjust the pointer reading of each subsequent green tire of the same model to the same value. On the one hand, it can improve the work efficiency of the workers, and on the other hand, it can ensure that the clamping force of each green tire is consistent, so that the processing quality of the green tire is more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of the tire clamping device currently used in the background technology;

[0018] Figure 2 A structural schematic diagram of a gravity-type adjustable tire clamping device for a tire internal spraying machine of the present invention;

[0019] Figure 3 It is a schematic diagram of the internal structure of the screw sleeve;

[0020] Figure 4 This is the internal schematic diagram of the linkage mechanism;

[0021] Figure 5 It is a schematic diagram of the structure of the clamping block;

[0022] Figure 6 The diagram is the rotation principle of the rotating plate;

[0023] Figure 7 is a longitudinal cross-sectional view of the clamping block;

[0024] Figure 8 for Figure 7 Enlarged view of point A in the middle;

[0025] Fig. 9 It is a schematic diagram of the structure of the scale line and the pointer.

[0026] In the figure: 1. clamping mechanism; 101. clamping block; 1011. rotating plate; 1012. fixed plate; 1013. small teeth; 1014. convex ridge; 1015. arc-shaped mouth; 1016. scale line; 1017. pointer; 102. clamping arm; 2. linkage mechanism; 201. driving gear; 202. driven gear; 203. lead screw; 204. nut; 3. green tire; 4. screw sleeve; 5. slider; 6. slide groove. DETAILED DESCRIPTION

[0027] The present invention will be further described below in conjunction with the accompanying drawings.

[0028] The orientations mentioned in this specification are based on the orientations of the gravity-type adjustable tire clamping device of the tire spraying machine of the present invention when it is working normally, and do not limit its orientation during storage and transportation. They only represent relative positional relationships, not absolute positional relationships.

[0029] like Figures 2 to 9As shown together, a gravity-type adjustable tire clamping device for an in-tire spraying machine includes a clamping mechanism 1 and a linkage mechanism 2. The clamping mechanism 1 includes a clamping block 101 arranged on the outside of a raw tire 3, and a clamping arm 102 is connected to the side of the clamping block 101; the linkage mechanism 2 includes a driving gear 201 and a driven gear 202 meshing with the driving gear 201, the driven gear 202 is fixedly connected with a lead screw 203, and a nut 204 is rotatably connected to the lead screw 203, the nut 204 is fixedly connected to the clamping arm 102, and the nut 204 is a ball screw nut 204. When the driving gear 201 rotates, it drives the driven gear 202 and the lead screw 203 to rotate, thereby driving the nut 204 and the clamping arm 102 to move back and forth along the lead screw 203, and at this time the clamping block 101 can move away from or close to the raw tire 3.

[0030] A threaded sleeve 4 is disposed outside the lead screw 203 , and a slide groove 6 extending along the length direction of the threaded sleeve 4 is disposed at the bottom of the threaded sleeve 4 ; a slider 5 is fixedly connected to the bottom of the nut 204 , and the slider 5 slides in the slide groove 6 along the length direction of the threaded sleeve 4 .

[0031] Furthermore, the clamping arm 102 is L-shaped and made of a bendable material with a certain toughness. One end of the clamping arm 102 is horizontally connected to the clamping block 101, bent 90 degrees in the middle, and the other end extends vertically downward and is connected to the linkage mechanism 2 at the bottom of the device, so that the raw tire 3 is supported by the clamping arm 102 after being clamped by the clamping block 101, and the raw tire 3 does not contact the rotating rod, thereby preventing the lower tire lip from being contaminated by the internal spray device, and preventing the raw tire 3 from falling off due to the centrifugal force of rotation, causing pollution of the raw tire 3, or crushing the raw tire 3, thereby ensuring product quality, improving production efficiency, and reducing cost waste.

[0032] Furthermore, four driven gears 202 are provided, and the four driven gears 202 are arranged on the circumference of the driving gear 201 at even intervals with the center of the driving gear 201 as the center of the circle; each driven gear 202 is connected to a lead screw, each lead screw 203 is connected to a nut 204, and each nut 204 is connected to a clamping block 101 through a clamping arm 102; so that the raw tire 3 can be clamped by the clamping block 101 in the front, back, left and right directions, and is not easy to fall off. The module and number of teeth of each driven gear 202 are the same, and they are all driven by the same driving gear 201, and can rotate at the same angle and speed at the same time, driving the lead screws 203 in four directions to work together, thereby driving the four clamping blocks 101 to approach the raw tire 3 from four directions at the same time; in other embodiments, the number of driven gears 202 and the clamping block 101 is set to three, or more than four, and similar effects can also be achieved through the same principle.

[0033] The clamping block 101 includes a crescent-shaped rotating plate 1011, the arc side of which is located on the side of the green tire 3; an arc-shaped cavity is provided in the rotating plate 1011, and the cavity is provided with an opening on the straight side of the rotating plate 1011; a fixed plate 1012 is rotatably connected in the cavity, and the fixed plate 1012 is fixedly connected to the clamping arm 102 from the opening; the fixed plate 1012 is arc-shaped, and its size is adapted to the size of the cavity, and the center of the circle coincides with the center of the cavity; the center of the arc of the fixed plate 1012 is located below the center line of the rotating plate 1011, as shown in FIG. Figure 6 As shown, the more the rotating plate 1011 rotates downward, the tighter the raw tire 3 is clamped, and the more the rotating plate 1011 rotates upward, the looser the raw tire 3 is clamped; when the raw tire 3 needs to be loosened, the rotating plate 1011 is rotated upward so that it rotates around the center of the fixed plate 1012, so as to adjust the distance between the outer arc edge of the rotating plate 1011 and the raw tire 3, thereby loosening the raw tire 3.

[0034] Furthermore, a plurality of small teeth 1013 are provided at intervals on the arc-shaped edge of the fixed plate 1012, and a ridge 1014 meshing with the small teeth 1013 is provided on the inner wall of the concave cavity, and the top ends of the small teeth 1013 and the ridge 1014 are arc-shaped, so that the rotation is smoother; when the rotating plate 1011 is adjusted to a suitable position, the ridge 1014 in the concave cavity is tightly meshed with the small teeth 1013 on the outer arc-shaped edge of the fixed plate 1012, so that the clamping block 101 is clamped more firmly and not easy to loosen, and also avoids wear caused by long-term friction between the two, so that the clamping block 101 cannot clamp the green tire 3 tightly.

[0035] Furthermore, an arc-shaped opening 1015 is provided on one side wall of the rotating plate 1011, the center of the arc-shaped opening 1015 coincides with the center of the fixed plate 1012, and a scale line 1016 is provided on the outer edge of the arc-shaped opening 1015; a pointer 1017 is fixedly provided on the fixed plate 1012, and the needle axis of the pointer 1017 passes through the arc-shaped opening 1015 and extends out of the side wall of the rotating plate 1011; the extension line of the center of the pointer 1017 passes through the center of the fixed plate 1012, and when the rotating plate 1011 rotates around the fixed plate 1012, the pointer 1017 can be observed. The reading on the scale line 1016 shown is adjusted to the same reading for each clamping plate, so that the clamping force of the clamping block 101 on the four sides of the raw tire 3 is the same, without relying on the worker's work experience and hand feel; in addition, when processing the same type of raw tire 3, remember the reading of the pointer 1017 when the first raw tire 3 is clamped, and adjust the reading of the pointer 1017 of each subsequent raw tire 3 of the same type to the same value. On the one hand, it can improve the work efficiency of the workers, and on the other hand, it can ensure that the clamping force of each raw tire 3 is consistent, making the processing quality of the raw tire 3 more stable.

[0036] Before spraying the green tire 3, adjust the height of the clamping arm 102 according to the size of the green tire 3 to ensure that the lower part of the green tire 3 does not touch the spraying tray after the green tire 3 is clamped; adjust the clamping block 101 to a horizontal position so that the pointer 1017 points to the "0" scale located in the middle of the scale line 1016; then rotate the active gear 201 to drive the driven gear 202 to rotate, thereby driving the clamping blocks 101 in four directions to approach the green tire 3 at the same time until the clamping blocks 101 clamp the green tire 3; at this time, if the green tire 3 is not clamped tightly enough, the rotating plate 1011 can be rotated downward to allow the clamping blocks 101 to clamp further Tighten the raw tire 3 to prevent it from falling; rotate the spray tray, move the internal spray nozzle downward, and spray when the photoelectric sensing detects the upper end of the raw tire 3. When the photoelectric sensing device passes the bottom of the raw tire 3, the spraying is ended and the internal spray nozzle returns to its position; when the raw tire 3 is taken out after spraying, the rotating plate 1011 of the clamp 101 is rotated upward to loosen the raw tire 3, and the raw tire 3 can be removed; during the spraying process, the raw tire 3 does not contact the spray machine tray to avoid contamination of the raw tire 3 by the internal spray equipment. The four sides of the clamp fix the raw tire 3 to prevent the raw tire 3 from detaching during rotation, thereby improving production efficiency and product quality and reducing production costs.

[0037] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. A gravity-type adjustable tire clamping device for a tire internal spraying machine, characterized in that: The invention comprises a clamping mechanism (1) and a linkage mechanism (2), wherein the clamping mechanism (1) comprises a clamping block (101) arranged on the outside of a green tire (3), and the side of the clamping block (101) is connected to a clamping arm (102); the linkage mechanism (2) comprises a driving gear (201) and a driven gear (202) meshing with the driving gear (201), the driven gear (202) is fixedly connected to a lead screw (203), a nut (204) is rotatably connected to the lead screw (203), and the nut (204) is fixedly connected to the clamping arm (102).

2. A gravity-type adjustable tire clamping device for a tire internal spraying machine as claimed in claim 1, characterized in that: Four driven gears (202) are provided, and the four driven gears (202) are arranged on the circumference of the driving gear (201) with the center of the driving gear (201) as the center of the circle and are evenly spaced; each driven gear (202) is connected to a lead screw, and each lead screw (203) is connected to a clamping block (101) via a clamping arm (102).

3. A gravity-type adjustable tire clamping device for a tire internal spraying machine as claimed in claim 1, characterized in that: The clamping block (101) comprises a crescent-shaped rotating plate (1011), the arc-shaped side of the rotating plate (1011) being located on the green tire (3) side; a circular arc-shaped cavity is provided in the rotating plate (1011), and an opening is provided in the cavity located on the straight side of the rotating plate (1011); a fixed plate (1012) is rotatably connected in the cavity, and the fixed plate (1012) is fixedly connected to the clamping arm (102).

4. A gravity-type adjustable tire clamping device for a tire internal spraying machine as claimed in claim 3, characterized in that: The fixed plate (1012) is in the shape of an arc, and the center of the arc of the fixed plate (1012) is located below the center line of the rotating plate (1011).

5. The gravity-type adjustable tire clamping device for tire internal spraying machine according to claim 3, characterized in that: A plurality of small teeth (1013) are arranged at intervals on the arc-shaped edge of the fixing plate (1012), and a convex ridge (1014) meshing with the small teeth (1013) is arranged on the inner wall of the concave cavity.

6. A gravity-type adjustable tire clamping device for a tire internal spraying machine as claimed in claim 3, characterized in that: An arc-shaped opening (1015) is provided on a side wall of one side of the rotating plate (1011), the center of the arc-shaped opening (1015) coincides with the center of the fixed plate (1012), and a scale line (1016) is provided on the outer edge of the arc-shaped opening (1015).

7. A gravity-type adjustable tire clamping device for a tire internal spraying machine as claimed in claim 6, characterized in that: A pointer (1017) is fixedly provided on the fixed plate (1012), and the needle shaft of the pointer (1017) passes through the arc-shaped opening (1015) and extends out of the side wall of the rotating plate (1011).

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