阅读说明：本技术 一种用于轮胎翻新的方法 (Method for retreading a tire ) 是由 周斌 于 2018-12-25 设计创作，主要内容包括：本发明公开了一种用于轮胎翻新的方法,包括以下步骤：(1)通过检测设备对轮胎进行固定,并检测轮胎上的通孔和扎在轮胎表面上的钉子；(2)将轮胎表面上的钉子去除后,对轮胎的表面进行削磨,去除轮胎表面的污渍；(3)在轮胎表面涂刷胶浆,在轮胎胎冠上缠绕帘子布,并贴上中垫胶；贴中垫胶的步骤如下：在轮胎未缠绕帘子布的位置处贴合2-3层中垫胶,再在轮胎的胎冠处贴合1层中垫胶;(4将加工完成的轮胎送入硫化罐中进行硫化。本发明中通过对应在未缠绕帘子布处贴了更厚的中垫胶,进而能够有效避免为缠绕帘子布的位置在后期使用过程中出现易损坏的情况,延长胎体的使用寿命,提高翻新轮胎整体的质量。(The invention discloses a method for retreading a tire, which comprises the following steps: (1) fixing the tire through detection equipment, and detecting a through hole in the tire and a nail pricked on the surface of the tire; (2) after the nails on the surface of the tire are removed, the surface of the tire is ground to remove stains on the surface of the tire; (3) coating the surface of the tire with rubber cement, winding cord fabric on the crown of the tire, and attaching middle cushion rubber; the step of sticking the middle cushion glue is as follows: the method comprises the steps of (1) attaching 2-3 layers of middle cushion rubber at the position where the tyre is not wound with the cord fabric, and then attaching 1 layer of middle cushion rubber at the tyre crown of the tyre, (4) delivering the processed tyre into a vulcanizing tank for vulcanization.)

1. A method for tire retreading comprising the steps of:

fixing the tire through detection equipment, and detecting a through hole in the tire and a nail pricked on the surface of the tire;

after the nails on the surface of the tire are removed, the surface of the tire is ground to remove stains on the surface of the tire;

coating the surface of the tire with rubber cement, winding cord fabric on the crown of the tire, and attaching middle cushion rubber; the step of sticking the middle cushion glue is as follows: attaching 2-3 layers of cushion rubber at the position where the tire is not wound with cord fabric, and attaching 1 layer of cushion rubber at the tire crown of the tire;

conveying the processed tire into a vulcanizing tank for vulcanizing;

the detection equipment comprises a rack (1), a rotating roller component (2) for rotating a tire, a tire fixing component (3) arranged on the rack (1) and a tire expanding component (5) arranged on the rack (1); the tire expanding component (5) comprises a first tire expanding piece (51) arranged at one end of the rack (1), a second tire expanding piece (52) arranged at the other end of the rack (1) and a driving piece (53) used for driving the second tire expanding piece (52) to move left and right, the side wall of the lower part of the second tire expanding piece (52) is movably connected with an expanding sheet (54), and a cylinder (55) used for driving the expanding sheet (54) to open and close is arranged on the second tire expanding piece (52);

a positioning concave part (521) for accommodating the expansion sheet (54) is arranged on the second tire expanding piece (52), and a buffer gasket (56) matched with the expansion sheet (54) is detachably connected to the side wall of the positioning concave part (521);

the buffer gasket (56) comprises a fixed layer (561) and a buffer layer (562) bonded with the fixed layer (561); a groove (522) is formed in the side wall of the positioning concave part (521), at least two clamping convex parts (523) are arranged on the inner wall of the groove (522), and a clamping concave part (524) matched with the clamping convex parts (523) is arranged on the side wall of the fixed layer (561);

the second tire expanding piece (52) is further provided with a dust removing component (57), the dust removing component (57) comprises a dust removing piece (571), an elastic piece (572) and a dust leakage hole (573), the dust removing piece (571) is located at the lower end of the positioning concave part (521), the dust removing piece (571) is a rubber block, the bottom surface of the rubber block is bonded with a wear-resistant layer (577), the side wall of the dust removing piece (571) is bonded with a connecting piece (575), the connecting piece (575) is a metal sheet, one end of the connecting elastic piece (572) is connected with the connecting piece (575), and the other end of the connecting elastic piece penetrates into the accommodating cavity (520) and is connected with the inner wall of the accommodating cavity (520); the ash leakage holes (573) are formed in through holes in the expansion sheet (54), and the ash leakage holes (573) are obliquely arranged from top to bottom; the dust falling into the expansion pieces (573) and the positioning concave part (521) slides into the dust leakage holes (573) along the upper end surface of the dust removing part (571) and then is discharged from the dust leakage holes (573);

the grinding adopts the following modes: grinding the surface of the tire body and the surface of the tire crown respectively to remove dirt on the surface of the tire tread; then, independently polishing the puncture and the puncture on the surface of the tire body by a polisher;

the process of winding the cord fabric comprises the following steps: firstly, cutting cord fabric into long strips, cleaning the cord fabric with gasoline, and winding the cord fabric onto a tire crown after air drying to form a belt layer; pressure is then applied to the belt layers so that air between adjacent belt layers is expelled outwardly.

2. A method for tire retreading as recited in claim 1, wherein: the thickness of the middle cushion rubber in the step (3) is 0.8-1.5 mm.

3. A method for tire retreading as recited in claim 2, wherein: the thickness of the middle cushion rubber in the step (3) is 1 mm.

4. A method for tire retreading as recited in claim 2, wherein: the width of the strip-shaped cord fabric is 1.4-1.8 cm.

5. A method for tire retreading as recited in claim 4, wherein: the width of the strip-shaped cord fabric is 1.6 cm.

Technical Field

The invention belongs to the technical field of tire retreading, and particularly relates to a method for tire retreading.

Background

The number of waste tires is continuously increased every year, and in order to reduce resource waste, a mode of continuously using the tires after being renovated appears in the prior art, so that the utilization rate of resources is improved. However, in the traditional retreading method, the whole tread is usually attached with the same thickness when the middle cushion rubber is attached, so that the firmness degree after retreading is lower, and the quality of the retreaded tire is influenced.

Disclosure of Invention

The present invention overcomes the deficiencies of the prior art by providing a method for retreading a tire having a high tire quality.

In order to achieve the purpose, the invention adopts the following technical scheme: a method for tire retreading comprising the steps of:

(1) fixing the tire through detection equipment, and detecting a through hole in the tire and a nail pricked on the surface of the tire;

(2) after the nails on the surface of the tire are removed, the surface of the tire is ground to remove stains on the surface of the tire;

(3) coating the surface of the tire with rubber cement, winding cord fabric on the crown of the tire, and attaching middle cushion rubber; the step of sticking the middle cushion glue is as follows: 2-3 layers of cushion rubber are attached to the position where the tire is not wound with the cord fabric, and 1 layer of cushion rubber is attached to the crown of the tire.

(4) And (4) conveying the processed tire into a vulcanizing tank for vulcanization.

According to the invention, the middle cushion rubber is adhered to the position where the cord fabric is not wound correspondingly, so that the situation that the position where the cord fabric is wound is easily damaged in the later use process can be effectively avoided, the service life of the tire body is prolonged, and the overall quality of the retreaded tire is improved.

The grinding adopts the following modes: grinding the surface of the tire body and the surface of the tire crown respectively to remove dirt on the surface of the tire tread; then, independently polishing the puncture and the puncture on the surface of the tire body by a polisher; the puncture and the puncture on the tire body can be polished smoothly, the flatness of the surface of the tire body is improved, and the quality of the retreaded tire is further improved.

The process of winding the cord fabric comprises the following steps: firstly, cutting cord fabric into long strips, cleaning the cord fabric with gasoline, and winding the cord fabric onto a tire crown after air drying to form a belt layer; pressure is then applied to the belt layers so that air between adjacent belt layers is expelled outwardly.

The thickness of the middle cushion rubber in the step (3) is 0.8-1.5 mm.

The thickness of the middle cushion rubber in the step (3) is 1 mm.

The width of the strip-shaped cord fabric is 1.4-1.8 cm.

The width of the strip-shaped cord fabric is 1.6 cm.

The detection equipment comprises a rack, a rotating roller component for rotating a tire, a tire fixing component arranged on the rack and a tire expanding component arranged on the rack; the tire expanding component comprises a first tire expanding piece arranged at one end of the rack, a second tire expanding piece arranged at the other end of the rack and a driving piece for driving the second tire expanding piece to move left and right, the side wall of the lower part of the second tire expanding piece is movably connected with an expanding piece, and the second tire expanding piece is provided with a cylinder for driving the expanding piece to open and close; the first tire expanding piece and the second tire expanding piece are arranged to break the left side and the right side of the tire, so that the fine holes at the bottom of the tire and the nails tied on the tire can be conveniently detected; the expansion piece and the air cylinder are arranged on the side wall of the second tire expansion piece, and the air cylinder pushes away the sunken part of the side wall of the tire, so that the side wall of the tire is conveniently detected; the expansion sheet avoids the process of detecting the tire by putting the tire down in the detection process, improves the detection efficiency of the tire and enhances the detection effect of the tire; the rotating roller component can rotate the tire in the detection process, so that the tire can be conveniently detected on other rotating surfaces, and the process does not need manual operation, so that the difficulty of the manual operation is reduced; the arrangement of the foot switch is convenient for opening and closing the rotating roller component, and the operation is convenient.

The second tire expanding piece is provided with a positioning concave part for accommodating the expanding piece, and the side wall of the positioning concave part is detachably connected with a buffer gasket matched with the expanding piece; the positioning concave part is arranged, so that the expansion sheet can be conveniently closed on the second tire expansion piece, the second tire expansion piece can conveniently break the tire in the initial stage, and on the other hand, in the early detection process, the expansion sheet has no pressure on the tire, so that the tire deformation caused by long-time tire breaking is avoided; the buffer washer is arranged, so that when the expansion piece is retracted to the second tire expansion piece, the expansion piece and the side wall of the positioning concave part are prevented from colliding with each other and being abraded; and set up this cushion ring it and can take place deformation when the expansion piece is withdrawed, consequently the cylinder can draw tight expansion piece, has ensured to be connected closely between expansion piece and the location concave part, and the expansion piece can not rock.

The buffer gasket comprises a fixed layer and a buffer layer bonded with the fixed layer; a groove is formed in the side wall of the positioning concave part, at least two clamping convex parts are arranged on the inner wall of the groove, and a clamping concave part matched with the clamping convex parts is arranged on the side wall of the fixed layer; the fixing layer is arranged, so that the buffer gasket can be conveniently inserted into the groove, and the connection is convenient; and set up joint convex part and joint concave part when connecting, the joint convex part can block in to the joint concave part to the fixed bed is difficult for breaking away, and this connected mode is simple, makes things convenient for the dismouting.

According to the invention, the thicker middle cushion rubber is adhered to the position where the cord fabric is not wound correspondingly, so that the condition that the position where the cord fabric is wound is easily damaged in the later use process can be effectively avoided, the service life of the tire body is prolonged, and the overall quality of the retreaded tire is improved.

Drawings

Fig. 1 is a front view of the present invention.

Fig. 2 is a top view of the present invention.

Fig. 3 is a side view of the present invention.

Fig. 4 is an enlarged view of D in fig. 3.

Fig. 5 is a partial structural diagram of the first embodiment of the present invention.

Fig. 6 is a partial structural schematic diagram of the present invention.

Fig. 7 is a partial cross-sectional view of the first embodiment of the present invention.

Fig. 8 is an enlarged view of a in fig. 7.

Fig. 9 is a partial sectional view of the second embodiment of the present invention.

Fig. 10 is an enlarged view of B in fig. 9.

Fig. 11 is an enlarged view of C in fig. 10.

Detailed Description

A method for tire retreading comprising the steps of: (1) fixing the tire through detection equipment, and detecting a through hole in the tire and a nail pricked on the surface of the tire; (2) after the nails on the surface of the tire are removed, the surface of the tire is ground to remove stains on the surface of the tire; (3) coating the surface of the tire with rubber cement, winding cord fabric on the crown of the tire, and attaching middle cushion rubber; the step of sticking the middle cushion glue is as follows: attaching 2-3 layers of cushion rubber at the position where the tyre is not wound with cord fabric, and attaching 1 layer of cushion rubber at the tyre crown of the tyre; the grinding adopts the following modes: grinding the surface of the tire body and the surface of the tire crown respectively to remove dirt on the surface of the tire tread; then, independently polishing the puncture and the puncture on the surface of the tire body by a polisher; the process of winding the cord fabric comprises the following steps: firstly, cutting cord fabric into long strips, cleaning the cord fabric with gasoline, and winding the cord fabric onto a tire crown after air drying to form a belt layer; applying pressure to the belt layers to enable air between two adjacent belt layers to be discharged outwards; the thickness of the middle cushion rubber in the step (3) is 0.8-1.5 mm; preferably 1 mm; the width of the strip-shaped cord fabric is 1.4-1.8 cm; preferably 1.6 cm.

As shown in fig. 1-11, the detecting apparatus includes a frame 1, a rotating roller member 2, a tire fixing member 3, and a tire expanding member 5, wherein the frame 1 is an H-shaped metal frame, the rotating roller member 2 is disposed in the middle of the frame 1, and the tire fixing member 3 is disposed above the frame 1; the tire fixing component 3 comprises two support rods 31 and two limiting pieces 32, the support rods 31 are metal rods, and the lower end parts of the support rods 31 are welded with the rack 1; the limiting member 32 includes a first rod 321 horizontally disposed, a second rod 322 obliquely disposed from top to bottom, and a sleeve 323; the first rod body 321 and the second rod body 322 are both metal rods, the sleeve 323 is a metal sleeve, one end of the first rod body 321 is connected with the sleeve 323, one end of the second rod body 322 is connected with the end part of the first rod body 321, and the other end of the second rod body is welded with the sleeve 323, so that the first rod body 321, the second rod body 322 and the sleeve 323 form a right triangle, the sleeve 323 is sleeved on the support rod 31, and the limiting part 32 can rotate on the support rod 31; the dust removing component can remove dust falling between the positioning concave part and the expansion piece in the process of detection and polishing, so that the expansion piece is prevented from being opened and closed due to the fact that the dust exists between the expansion piece and the positioning concave part for a long time; the elastic piece can compress and stretch when the expansion piece is driven to open and close, so that the ash removing piece can be tightly attached to the side wall of the expansion piece; and set up the ash leakage hole to slope from top to bottom, it can be convenient for the dust to spill from this hole, and the slope sets up the downthehole volume of reducible dust entering, avoids the ash leakage hole to plug up.

Specifically, a locking structure 6 is arranged on the supporting rod 31, and the locking structure 6 comprises a base 61, a locking piece 62, a spring 63 and a locking hole 64; the base 61 is a metal sheet welded on the outer wall of the support rod 31, a round hole is arranged on the base 61, the locking piece 62 penetrates out of the round hole from the lower end face of the base 61, the spring 63 is sleeved on the locking piece 62, one end of the spring 63 is welded with the lower end face of the base 61, and the other end of the spring 63 is welded with the lower end of the locking piece 62; a wear-resistant piece 621 is bonded on the upper end of the locking piece 62, the wear-resistant piece 621 is a wear-resistant plastic block, and the upper end surface of the wear-resistant piece 621 is a sliding inclined surface 622 inclined from top to bottom; a convex ring 324 is welded on the outer wall of the sleeve 323, the locking hole 64 is formed on the convex ring 324, the limiting member 32 is rotated, and the locking member 62 is inserted into the locking hole 64.

The tire expanding component 5 comprises a first tire expanding part 51, a second tire expanding part 52 and a driving part 53, wherein the first tire expanding part 51 comprises a tire expanding head 511 and a fixing plate 512, the fixing plate 512 is a flat plastic sheet, the fixing plate 512 is fixed at the left end of the rack 1 through a bolt, the tire expanding head 511 is an inverted conical plastic head, and the tire expanding head 511 is fixedly connected with one end of the fixing plate 512; the second tire expanding member 52 is arranged at the right end of the frame 1, the driving member 53 is an air cylinder, the driving member 53 is connected with the second tire expanding member 52, and thus the driving member 53 pulls the second tire expanding member 52 to move left and right.

Specifically, the second tire enlarging element 52 is an inverted conical metal block, and a side wall portion of the second tire enlarging element 52 is recessed inwards to form a positioning recess 521; the side wall of the positioning concave part 521 is hinged with an expansion sheet 54, and the specific hinged position is the lower end part of the positioning concave part 521; the expansion piece 54 is a metal piece with the same size as the positioning concave part 521, the shape of the metal piece is the same as that of the positioning concave part 521, the expansion piece 54 is an arc-shaped metal piece, and the upper end part of the expansion piece 54 is bent; when the expansion piece 54 is closed into the positioning concave part 521, the expansion piece 54 and the second tyre expanding piece 52 form a complete inverted metal cone; the second tire expanding member 52 is provided with an accommodating cavity 520, the side wall of the positioning concave part 521 is provided with an opening 529, the accommodating cavity 520 is internally provided with an air cylinder 55, one end of the air cylinder 55 extends out of the opening 529 and is hinged with the upper part of the expanding sheet 54, so that the air cylinder 55 can drive the expanding sheet 54 to open and close; so that the expansion tabs 54 can spread apart the portion of the tire that contacts the hub during use; in order to improve the anti-slip property between the expansion piece 54 and the tire, a plurality of anti-slip ribs 541 are provided on the sidewall of the expansion piece 54, and the anti-slip ribs 541 have an S-shape.

A buffer gasket 56 is arranged on the side wall of the positioning concave part 521, and the buffer gasket 56 is arranged along the edge of the side wall of the positioning concave part 521; the buffer gasket 56 comprises a fixed layer 561 and a buffer layer 562, wherein the fixed layer 561 is a plastic block, and the buffer layer 562 is a rubber strip; a plurality of fixing protrusions 563 are arranged on the fixed layer 561, the upper end portions of the fixing protrusions 563 are of an umbrella-shaped structure, a plurality of connecting holes 564 are arranged on the buffer layer 562, and the fixing protrusions 563 are inserted into the connecting holes 564, so that the buffer layer 562 and the fixed layer 561 are temporarily fixed, and in order to enable the buffer layer 562 and the fixed layer 561 to be more stably connected, the fixed layer 561 and the buffer layer 562 are further bonded through glue; when the fixing convex part is inserted into the buffer layer, the fixing layer and the buffer layer are tightly connected, so that the fixing layer and the buffer layer are conveniently and accurately positioned and connected; and the setting of fixed convex part and locating hole can effectively fix the buffer layer when the buffer layer appears partly coming unstuck, avoids the further aggravation that comes unstuck between buffer layer and the fixed layer, has prolonged the life of cushion washer.

Specifically, a groove 522 is formed in the edge of the sidewall of the positioning concave portion 521, and the fixing layer 561 is inserted into the groove 522; two clamping convex parts 523 are arranged on the inner wall of the groove 522, and the clamping convex parts 523 are two convex strips adhered to the inner wall of the groove 522; two clamping concave parts 524 are arranged on the side wall of the fixed layer 561, the clamping concave parts 524 are formed by inwards sinking the side wall of the fixed layer 561, and when the fixed layer 561 is inserted into the groove 522, the clamping convex part 523 is clamped into the clamping concave part 524, so that the buffer gasket 56 is fixed in the positioning concave part 521; when the expansion piece 54 is closed, the side wall of the expansion piece 54 presses against the cushion washer 56.

The second tire expanding piece 52 is further provided with an ash removing component 57, the ash removing component 57 comprises an ash removing piece 571, an elastic piece 572 and an ash leakage hole 573, the ash removing piece 571 is positioned at the lower end of the positioning concave part 521, the ash removing piece 571 is a rubber block, a wear-resistant layer 577 is bonded on the bottom surface of the rubber block, the wear-resistant layer 577 is made of wear-resistant plastic, a connecting piece 575 is bonded on the side wall of the ash removing piece 571, the connecting piece 575 is a metal sheet, one end of the connecting elastic piece 572 is connected with the connecting piece 575, the other end of the connecting elastic piece 572 penetrates into the accommodating cavity 520 and is connected with the inner wall of the accommodating cavity 520, and the elastic piece is a spring; the ash leakage holes 573 are through holes formed in the expansion sheet 54, and the ash leakage holes 573 are obliquely arranged from top to bottom; the dust falling into the expansion pieces 573 and the positioning recess 521 slides down into the dust leakage holes 573 along the upper end surface of the dust removing member 571 and is then discharged from the dust leakage holes 573.

The rotating roller part 2 comprises a first rotating roller 21, a second rotating roller 22 and a driving motor 23, the first rotating roller 21 and the second rotating roller 22 are both metal rollers, the first rotating roller 21 and the second rotating roller 22 are arranged side by side, and a space is formed between the first rotating roller and the second rotating roller; the driving motor 23 is a motor existing in the market, the driving motor 23 is connected with the first rotating roller 21 through a belt, and similarly, the first rotating roller 21 is connected with the second rotating roller 22 through a belt, so that the first rotating roller 21 rotates and the second rotating roller 22 rotates synchronously.