A kind of shrinkage and stretching mechanism of bonding drum and method for bonding apex

Abstract

The application aims to provide a fitting drum contraction and stretching mechanism with adjustable diameter outer circumference length taper and a method for fitting triangular rubber, and realizes efficient fitting between the triangular rubber and the steel ring, so as to solve the problems of low efficiency, low quality and poor universality of the traditional fitting drum; in order to achieve the above-mentioned purpose, the solving method of the application is to provide a fitting drum contraction and stretching mechanism, which comprises a power cylinder system, a contraction and stretching device and a finger plate turning device, the contraction and stretching device is surrounded on the head of the main shaft, the finger plate turning device is surrounded outside the contraction and stretching device, and the power cylinder system is surrounded on the middle part of the main shaft and provides power for the contraction and stretching device.

Description

Technical Field

[0001] This invention relates to the field of rubber tire manufacturing technology, and in particular to a bonding drum shrinkage and stretching mechanism and a triangular rubber bonding method. Background Technology

[0002] With the development of the rubber industry, there is an increasing pursuit of low-carbon, environmentally friendly, low-energy-consumption, low-noise, zero-pollution, high-efficiency, and low-cost rubber equipment and processes for producing rubber products. This is also the current trend in the development of rubber equipment technology.

[0003] The bonding of the triangular rubber to the fabric-covered steel rim is a crucial process in tire forming. Currently, most domestic tire manufacturers still use manual bonding in the production of all-steel truck tires. This method has drawbacks such as high labor intensity, low production efficiency, and unstable product quality. Even automatic bonding drums have poor versatility and are only suitable for producing products of a single specification, thereby indirectly increasing production costs.

[0004] CN201610750058.7 discloses a bonding drum for an automatic triangular adhesive bonding machine, belonging to the technical field of triangular adhesive bonding machines. It includes a main shaft extending front and rear, a cylinder, a rear support plate, a front support plate spaced apart in front of the cylinder, an adjusting screw located in front of the main shaft, several drum flipping mechanisms arranged sequentially around the outer ring of the main shaft, a collar, and a guide key fixedly connected to the collar. Although this bonding drum can realize the function of automatically bonding triangular adhesive, the outer diameter of the bonding drum is fixed and unchanged. The same type of bonding drum is only suitable for producing tires of a single specification. It has poor versatility and cannot meet the production needs of tires of various nominal sizes, which indirectly increases the production cost.

[0005] Therefore, providing a shrinkage and stretching mechanism with an adjustable outer circumference of the bonding drum and a bonding method for the triangular rubber in the field of rubber tire manufacturing technology is an urgent technical problem to be solved. Summary of the Invention

[0006] The purpose of this invention is to provide a shrinkage and stretching mechanism for a bonding drum with adjustable outer diameter and taper, as well as a bonding method for triangular adhesive, to achieve high-efficiency bonding between the triangular adhesive and the steel ring, thereby solving the problems of low efficiency, low quality and poor versatility of traditional bonding drums.

[0007] To achieve the above objectives, the present invention provides a shrinking and stretching mechanism for a fitting drum, comprising: a power cylinder system, a shrinking and stretching device, and a finger plate flipping device. The shrinking and stretching device surrounds the head of the main shaft, the finger plate flipping device surrounds the outside of the shrinking and stretching device, and the power cylinder system surrounds the middle of the main shaft and provides power to the shrinking and stretching device.

[0008] Furthermore, the contraction and extension device includes several contraction and extension components, which circumferentially surround the main shaft. The contraction and extension system includes a push rod, a connecting rod, a pressure ring, a short hinge rod, a slider A, and a slider B. The finger plate flipping device is fixed on slider A. One end of the short hinge rod is connected to slider A via a second self-lubricating bearing fitted onto pin C. The other end of the short hinge rod is connected to a small sliding plate via a second self-lubricating bearing fitted onto pin D. The small sliding plate is slidably connected to the main shaft. The pressure ring has a circumferentially surrounding groove. One end of the connecting rod is connected to the groove of the pressure ring via a first self-lubricating bearing fitted onto pin B. The other end of the connecting rod is slidably connected to the finger plate flipping device via a slider B fitted onto pin E. One end of the push rod is connected to the cylinder power system. The other end of the push rod is connected to the middle of the connecting rod via a first self-lubricating bearing fitted onto pin F.

[0009] Furthermore, the power cylinder system includes a first cylinder, a second cylinder, a large sliding plate, a slider seat, a first slider connecting plate, and a second slider connecting plate. There are one pair of first cylinders and one pair of second cylinders, respectively arranged opposite each other on both sides of the main shaft. The first cylinder is connected to the cylinder sliding mechanism. A first piston rod is provided inside the first cylinder and connected to the slider seat. The slider seat is located outside the first slider connecting plate. A slider is provided inside the first slider connecting plate and slidably connected to the main shaft. The second cylinder is connected to one side of the slider seat, and the large sliding plate is located on the other side of the slider seat. A second piston rod is provided inside the second cylinder, passing through the slider seat and connecting to the large sliding plate. The large sliding plate is located outside the second slider connecting plate. A slider is provided inside the second slider connecting plate and slidably connected to the main shaft. The large sliding plate has multiple circumferentially surrounding grooves. One end of a push rod is fitted with a second self-lubricating bearing via a pin A and engages with a groove on the large sliding plate. A pressure plate is used to fix the push rod within the corresponding groove on the large sliding plate.

[0010] Furthermore, the spindle head is provided with a base, which is a ring-shaped part fitted around the spindle head. The end cap is connected to the base by screws. The base is provided with several radially open sliding grooves, and the slider A is inserted into the sliding grooves.

[0011] Furthermore, the finger plate flipping device includes several finger plate flipping assemblies. Each finger plate flipping assembly includes a tile, a supporting finger plate, and a finger plate hinge. The tile is fixed to the slider A by pins and screws. The head of the finger plate hinge is connected to the tile. The supporting finger plate is embedded in the finger plate hinge by screws. One end of the connecting rod is fitted with a slider B and slidably connected to the finger plate hinge.

[0012] Furthermore, the number of sliding grooves on the base, pressure ring, large sliding plate, and small sliding plate is consistent with the number of finger plate flipping components.

[0013] Furthermore, among the multiple finger plate flipping assemblies, one of the finger plate flipping assemblies has an adsorption tile, and the adsorption tile is provided with an adsorber mounting plate and a vacuum adsorber.

[0014] A method for bonding triangular adhesive to a drum shrinkage and expansion mechanism:

[0015] 101: According to the specifications of the tire bead to be processed, adjust the diameter and taper of the bonding drum, move the power cylinder system along the main shaft direction, and move the small slide plate along the main shaft direction to adjust the height of the slider A, so that the diameter and taper of the bonding drum are adjusted to the appropriate position.

[0016] 102: Rotate the bonding drum to rotate the finger plate flipping assembly containing the adsorption tiles to the set position, namely the vacuum adsorption tile docking position on the drum.

[0017] 103: The adhesive delivery device delivers the head of the triangular adhesive to the adsorption tile. The vacuum adsorption tile holds the head of the adhesive. The bonding drum rotates to wrap the triangular adhesive around its circumference. The adhesive delivery device then delivers the tail of the triangular adhesive to overlap with the head and place it to pre-press the joint, thereby completing the head and tail sealing and rolling action of the triangular adhesive.

[0018] 104: Move the bonding drum to the upright position so that the bonding drum is opposite to the bonding plate. The bonding drum rotates the triangular glue joint to the pressing start angle. The pressing mechanism then presses down the multi-layer sheet roller. The bonding drum rotates a certain angle to ensure that the multi-layer sheet roller presses the entire joint, thereby completing the rolling action of sealing the head and tail of the triangular glue.

[0019] 105: The bonding disc extends into position and aligns with the bonding drum. The first cylinder remains stationary. The first piston rod inside the first cylinder drives the second cylinder and the slider seat to move axially along the main shaft. When the first piston rod of the first cylinder moves to its maximum position, the second cylinder remains stationary. The second piston rod inside the second cylinder drives the large sliding disc to move towards the main shaft, causing the push rod, connecting rod, and finger plate flipping assembly to swing. This causes the finger plate flipping assembly to flip outward, flipping the triangular rubber bead onto the steel ring of the bonding disc. After bonding is complete, the second cylinder and the first cylinder are controlled to drive the finger plate flipping assembly to retract and flip inward. Attached Figure Description

[0020] Figure 1 This is a cross-sectional view along the second cylinder provided by the present invention;

[0021] Figure 2 This is a cross-sectional view provided by the present invention along the first cylinder as the section line;

[0022] Figure 3 This is a schematic diagram of the finger plate flipping assembly provided by the present invention.

[0023] As shown in the figure, 1-main shaft, 2-second piston rod, 3-first slider connecting plate, 4-second cylinder, 5-large slide plate, 6-push rod, 7-connecting rod, 8-second self-lubricating bearing, 9-pin D, 10-finger plate flipping assembly, 11-short hinge rod, 12-slider A, 13-second slider connecting plate, 14-pin A, 15-slider B, 16-pin E, 17-first self-lubricating bearing, 18-pin F, 19-pin B, 20-pin C, 21-first piston rod, 23-first cylinder, 24-slider seat, 25-small slide plate, 26-pressure ring, 27-base, 28-bearing block, 29-finger plate hinge, 30-supporting finger plate. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0025] like Figure 1 and Figure 2 As shown, a shrinking and stretching mechanism for a fitting drum includes: a power cylinder system, a shrinking and stretching device, and a finger plate flipping device. The shrinking and stretching device is surrounded around the head of the main shaft 1, the finger plate flipping device is surrounded around the outside of the shrinking and stretching device, and the power cylinder system is surrounded around the middle of the main shaft 1 and provides power to the shrinking and stretching device.

[0026] The contraction and extension device includes several contraction and extension components, which circumferentially surround the main shaft 1. The contraction and extension system includes a push rod 6, a connecting rod 7, a pressure ring 26, a short hinge rod 11, a slider A12, and a slider B15. The finger plate flipping device is fixed on the slider A12. One end of the short hinge rod 11 is connected to the slider A12 via a pin C20 and a second self-lubricating bearing 8. The other end of the short hinge rod 11 is connected to the small sliding plate 25 via a pin D9 and a second self-lubricating bearing 8. A sliding bearing 8 is connected, and the small sliding plate 25 is slidably connected to the main shaft 1; the pressure ring 26 is provided with a circumferentially surrounding sliding groove, one end of the connecting rod 7 is connected to the sliding groove of the pressure ring 26 through the first self-lubricating bearing 17 sleeved on the pin B19, and the other end of the connecting rod 7 is slidably connected to the finger plate flipping device through the sliding block B15 sleeved on the pin E16; one end of the push rod 6 is connected to the cylinder power system, and the other end of the push rod 6 is connected to the middle of the connecting rod 7 through the first self-lubricating bearing 17 sleeved on the pin F18;

[0027] The power cylinder system includes a first cylinder 23, a second cylinder 4, a large sliding plate 5, a slider seat 24, a first slider connecting plate 3, and a second slider connecting plate 13. There are one pair of first cylinders 23 and one pair of second cylinders 4, respectively arranged opposite each other on both sides of the main shaft 1. The first cylinder 23 is connected to the cylinder sliding mechanism. A first piston rod 21 is provided inside the first cylinder 23 and connected to the slider seat 24. The slider seat 24 is located outside the first slider connecting plate 3. A slider is provided inside the first slider connecting plate 3 and slidably connected to the main shaft 1. The second cylinder 4 is connected to... The large slide plate 5 is located on the other side of the slider seat 24 and is connected to one side of the slider seat 24. The second piston rod 2 is provided in the second cylinder 4. The second piston rod 2 passes through the slider seat 24 and is connected to the large slide plate 5. The large slide plate 5 is located on the outside of the second slider connecting plate 13. The inner side of the second slider connecting plate 13 is provided with a slider that is slidably connected to the main shaft 1. The large slide plate 5 is provided with multiple circumferentially surrounding slide grooves. One end of the push rod 6 is fitted with a second self-lubricating bearing 8 through a pin A14 and cooperates with the slide groove on the large slide plate 5. It is fixed in the corresponding slide groove of the large slide plate 5 by a pressure plate.

[0028] The spindle 1 has a base 27 at its head. The base 27 is annular and fits around the head of the spindle 1. The end cap is connected to the base 27 by screws. The base 27 has several radially open grooves, and the slider A12 is inserted into the grooves.

[0029] like Figure 3 As shown, the finger plate flipping device includes several finger plate flipping assemblies 10. Each finger plate flipping assembly 10 includes a tile 28, a supporting finger plate 30, and a finger plate hinge 29. The tile 28 is fixed to the slider A12 by pins and screws. The head of the finger plate hinge 29 is connected to the tile 28. The supporting finger plate 30 is embedded in the finger plate hinge 29 by screws. One end of the connecting rod 7 is fitted with a slider B15 and slidably connected to the finger plate hinge 29. The number of sliding grooves on the base 27, pressure ring 26, large sliding plate 5, and small sliding plate 25 is the same as the number of finger plate flipping assemblies 10. Among the multiple finger plate flipping assemblies 10, one of the finger plate flipping assemblies 10 has an adsorption tile, which is equipped with an adsorber mounting plate and a vacuum adsorber.

[0030] A method for bonding triangular adhesive to a drum shrinkage and expansion mechanism:

[0031] 101: According to the specifications of the tire bead to be processed, adjust the diameter and taper of the bonding drum, move the power cylinder system along the main shaft direction, and move the small slide plate along the main shaft direction to adjust the height of the slider A12, so that the diameter and taper of the bonding drum are adjusted to the appropriate position.

[0032] 102: Rotate the bonding drum to rotate the finger plate flipping assembly 10 containing the adsorption tiles to the set position, and the vacuum adsorption tiles on the drum are aligned.

[0033] 103: The adhesive delivery device delivers the head of the triangular adhesive to the adsorption tile. The vacuum adsorption tile holds the head of the adhesive. The bonding drum rotates to wrap the triangular adhesive around its circumference. The adhesive delivery device then delivers the tail of the triangular adhesive to overlap with the head and pre-press the joint.

[0034] 104: Move the bonding drum to the upright position so that the bonding drum is opposite to the bonding plate. The bonding drum rotates the triangular glue joint to the pressing start angle. The pressing mechanism then presses down the multi-layer roller. The bonding drum rotates a certain angle to ensure that the multi-layer roller presses the entire joint, thereby completing the triangular glue sealing head and tail rolling action.

[0035] 105: The bonding disc extends into position and aligns with the bonding drum. The first cylinder 23 remains stationary. The first piston rod 21 within the first cylinder 23 drives the second cylinder 4 and the slider seat 24 to move axially along the main shaft 1. When the first piston rod 21 of the first cylinder 23 reaches its maximum position, the second cylinder 4 remains stationary. The second piston rod 2 within the second cylinder 4 drives the large sliding disc 5 to move towards the main shaft 1, causing the push rod 6, connecting rod 7, and finger plate flipping assembly 10 to swing, causing the finger plate flipping assembly 10 to flip outward and flip the triangular rubber bead onto the bonding disc. After bonding is complete, the second piston rod 2 within the second cylinder 4 is controlled to retract the large sliding disc 5 towards the main shaft 1. The first piston rod 21 within the first cylinder 23 is controlled to retract the second cylinder 4 and the slider seat 24 along the main shaft 1, causing the finger plate flipping assembly 10 to retract and flip inward.

[0036] Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

Claims

1. A conforming drum retraction and extension mechanism, characterized by, include: The system includes a power cylinder system, a shrinking and stretching device, and a finger plate flipping device. The shrinking and stretching device is surrounded around the head of the main shaft (1), the finger plate flipping device is surrounded around the outside of the shrinking and stretching device, and the power cylinder system is surrounded around the middle of the main shaft (1) and provides power to the shrinking and stretching device. The power cylinder system includes a first cylinder (23), a second cylinder (4), a large slide plate (5), a slider seat (24), a first slider connecting plate (3), and a second slider connecting plate (13); The contraction and extension device includes several contraction and extension components, which circumferentially surround the main shaft (1). The contraction and extension device includes a push rod (6), a connecting rod (7), a pressure ring (26), a short hinge rod (11), a slider A (12), and a slider B (15). The finger plate flipping device is fixed on slider A (12). One end of the short hinge rod (11) is connected to slider A (12) via a second self-lubricating bearing (8) fitted onto a pin C (20). The other end is connected to the small slide plate (25) by a second self-lubricating bearing (8) through a pin D (9), and the small slide plate (25) is slidably connected to the main shaft (1); the pressure ring (26) is provided with a circumferentially surrounding groove, one end of the connecting rod (7) is connected to the groove of the pressure ring (26) by a first self-lubricating bearing (17) through a pin B (19), and the other end of the connecting rod (7) is slidably connected to the finger plate flipping device by a slider B (15) through a pin E (16); one end of the push rod (6) is connected to the power cylinder system, and the other end of the push rod (6) is connected to the middle of the connecting rod (7) through a first self-lubricating bearing (17) through a pin F (18); The finger plate flipping device includes several finger plate flipping assemblies (10). Each finger plate flipping assembly (10) includes a tile (28), a supporting finger plate (30), and a finger plate hinge (29). The tile (28) is fixed to the slider A (12) by pins and screws. The head of the finger plate hinge (29) is connected to the tile (28). The supporting finger plate (30) is embedded in the finger plate hinge (29) by screws. One end of the connecting rod (7) is fitted with a slider B (15) and slidably connected to the finger plate hinge (29). Among the multiple finger plate flipping assemblies (10), one finger plate flipping assembly (10) has an adsorption tile in its tile, which is provided with an adsorption mounting plate and a vacuum adsorption device; wherein, the finger plate flipping assembly (10) with the adsorption tile can rotate to the vacuum adsorption tile docking position on the bonding drum, and the triangular adhesive head is delivered to the adsorption tile using the adhesive delivery device, the vacuum adsorption tile holds the adhesive head, the bonding drum rotates to wrap the triangular adhesive around its circumference, and the adhesive delivery device then delivers the triangular adhesive tail to overlap with the head, thereby achieving pre-pressing of the joint.

2. A conforming drum shrink and stretch mechanism according to claim 1, wherein, The first cylinder (23) and the second cylinder (4) are arranged on both sides of the main shaft (1) respectively, the first cylinder (23) is connected with the cylinder sliding mechanism, the first cylinder (23) is provided with a first piston rod (21) connected with the sliding block seat (24), the sliding block seat (24) is arranged on the outer side of the first sliding block connecting plate (3), the inner side of the first sliding block connecting plate (3) is provided with a sliding block connected with the main shaft (1) in a sliding mode, the second cylinder (4) is connected with one side of the sliding block seat (24), the large sliding disc (5) is arranged on the other side of the sliding block seat (24), the second cylinder (4) is provided with a second piston rod (2), the second piston rod (2) passes through the sliding block seat (24) and is connected with the large sliding disc (5), the large sliding disc (5) is arranged on the outer side of the second sliding block connecting plate (13), the inner side of the second sliding block connecting plate (13) is provided with a sliding block connected with the main shaft (1) in a sliding mode, the large sliding disc (5) is provided with a plurality of circumferentially surrounding sliding grooves, one end of the push rod (6) is sleeved with a second self-lubricating bearing (8) through a pin shaft A (14) and is matched with the sliding groove on the large sliding disc (5), and the push rod (6) is fixed in the corresponding sliding groove of the large sliding disc (5) by a pressing plate.

3. A conformable drum shrink-stretch mechanism according to claim 1, wherein, The head of the main shaft (1) is provided with a base (27), the base (27) is a circular ring arranged on the head of the main shaft (1), an end cover is connected with the base (27) through screws, a plurality of radial through sliding grooves are arranged on the base (27), and the sliding block A (12) penetrates the sliding grooves.

4. A conforming drum shrinking and stretching mechanism according to claim 3, wherein The number of the sliding grooves on the base (27), the compression ring (26), the large sliding disc (5) and the small sliding disc (25) is consistent with the number of the finger plate overturning assembly (10).

5. A method of applying a bead of triangular glue using a drum shrink-stretch mechanism, using the drum shrink-stretch mechanism of any one of claims 1-4, wherein, Including 101: according to the size of the tire bead to be processed, the diameter and taper of the matching drum are adjusted, the power cylinder system is moved along the direction of the main shaft, the height of the small sliding disc adjusting sliding block A (12) is adjusted along the direction of the main shaft, and the diameter and taper of the matching drum are changed to the appropriate position; 102: rotate the matching drum, make the finger plate overturning assembly (10) provided with the adsorbed tile rotate to the set position, that is, the vacuum adsorbed tile butt joint position on the drum; 103: the triangular rubber head is delivered to the adsorbed tile by using the glue delivery device, the vacuum adsorbed tile sucks the rubber head, the matching drum rotates to wrap the triangular rubber around the circumference, the glue delivery device delivers the tail of the triangular rubber to coincide with the head and place it, the butt joint is pre-pressed, and then the rolling and pressing action of closing the head and tail of the triangular rubber is completed; 104: move the matching drum to the overturning position, make the matching drum opposite to the matching disc, rotate the triangular rubber joint to the pressing starting angle by the matching drum, press the laminated sheet roll down by the pressing mechanism, rotate the matching drum by a certain angle, ensure that the laminated sheet roll presses the whole joint, and then the rolling and pressing action of closing the head and tail of the triangular rubber is completed; 105: The first piston rod (21) in the first cylinder (23) drives the second cylinder (4) and the slider block (24) to move axially along the main shaft (1). When the first piston rod (21) in the first cylinder (23) moves to the maximum position, the second cylinder (4) is stationary, and the second piston rod (2) in the second cylinder (4) drives the large sliding disc (5) to move towards the main shaft (1), drives the push rod (6), the connecting rod (7) and the finger plate flipping assembly (10) to swing, so that the finger plate flipping assembly (10) flips outward, and the triangular rubber bead is flipped to the bonding disc. After the bonding is completed, the second cylinder (4) and the first cylinder (23) drive the finger plate flipping assembly (10) to flip inward.

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