KR20020039869A - Grinder device of buffing equipment for a tire - Google Patents

Abstract

PURPOSE: A grinder unit of a tire buffing device is provided to improve the accuracy of work and to easily perform the repair work by automatically controlling a position of the grinder using a separate control device. CONSTITUTION: A grinder unit includes a grinder(50) having a buffing grindstone(51). The buffing grindstone(51) is rotated by a grinder driving motor(40). The grinder(50) and the driving motor(40) are vertically reciprocated by a vertical reciprocating device(10). A grinding angle of the grinder(50) is controlled by a grinder angle control device(20). A horizontal reciprocating device(30) is provided to horizontally reciprocate the grinder(50) and the driving motor(40). The horizontal reciprocating device(30) is installed at an upper portion of the grinder angle control device(20). The grinder angle control device(20) is installed on the vertical reciprocating device(10). The grinder(50) and the driving motor(40) are fixed to the upper portion of the horizontal reciprocating device(30).

Description

Grinder device of buffing equipment for a tire}

The present invention relates to a grinding mechanism constituting a tire buffing apparatus, and more particularly, to a grinding mechanism of a tire buffing apparatus configured to buff a downward sidewall portion of a tire.

As is well known, the buffing operation is the grinding of the curve strip to indicate the embossed state of the white sidewall or white letter. This buffing operation constitutes a tire manufacturing apparatus. It is automatically performed by the buffing device.

Conventional buffing device, the tire supplied from the tire supply device is set in the working position on the process progress line via the tire transfer device and the tire centering device, and by lifting the tire via a separate lifting device via the rim fixing means After the tire is rotatably fixed, the tire is inflated by means of the tire pressure adjusting means, while the tire is rotated, the sidewall portion facing upward of the tire is ground through the grinding machine, and when the grinding is completed, the tire rotation is stopped. After the tire is reduced to the initial state by the tire pressure adjusting means, the rim fixing means and the tire engaged with the lifting device are separated by placing the buffed tire on the tire discharging device on the working position, and then the tire discharging device is Exhaust the buffed tire into the next process, and then step by step To be executed repeatedly is adapted to process the tire buffing continuously supplied.

However, in the conventional buffing apparatus, since the buffing operation is performed while the tire is up / down on one work position placed on the process progress line, the other tire is supplied after the one tire supplied to the buffing apparatus is buffed and discharged. The problem that the tires are supplied by the buffing process is caused, and the time required for the buffing operation is increased, thereby causing a problem in that the productivity is lowered.

In order to solve this problem, tire replacement work and tire buffing work are carried out separately at two working positions through the tire position change device, so that the tire supply work and the tire discharge work are performed at almost the same time, thereby greatly improving the working speed. A buffing device has been proposed.

In the case of such a buffing device, it is to replace the buffed tire and the tire to be buffed at one work position, and to perform the buffing work at the other work position, and when the tire replacement work and the buffing work are completed, the tire position is changed. After changing the position of the replaced tire and the buffed tire by rotating the device by 180 °, the above operation is repeated. Since the buffing operation is performed at only one working position, the buffing operation of one grinder is performed. It is desirable to selectively grind the tires in the order of the process while fixing them in the working position to be performed and changing the position while the grinder is fixed, and thus such a grinder is required.

In addition, the conventional grinding machine is fixed to the support structure to move forward and backward reciprocating, and selectively grinding the tire rotated by the rim fixing means, so that when the type of tire to be buffed is changed, the forward and backward reciprocating distance Wow, the hassle of having to readjust the installation position considering the grinding angle. In addition, the setting of such a grinder installation position requires precision, but in the prior art, the operator is required to perform the manual work, and in order to install the grinder at the correct setting position, the tire grinding operation is repeatedly performed to optimally install the grinder. Since the position has to be determined, the positioning operation considering the grinding angle and the working distance of the grinding machine is quite difficult, and a problem arises in that a large number of tires are unnecessarily processed when setting the position.

Accordingly, the present invention is invented to solve the problems caused in the related art while satisfying the above requirements, the position of the grinding machine is automatically controlled by a separate control device, the grinding angle of the grinding machine by a separate control device It is an object of the present invention to provide a grinding mechanism of a tire buffing apparatus that can be controlled automatically and revived to meet demands, thereby improving work accuracy and making maintenance and maintenance convenient.

1 is a front view of a grinding mechanism according to the present invention,

2 is a right side view of FIG. 1;

FIG. 3 is a cross-sectional view taken along line X-X of FIG. 1, wherein the top and bottom reciprocating transfer means constituting the grinding mechanism are viewed from above;

4 is a sectional view taken along the line Y-Y of FIG. 1, showing a plan view of the grinding angle control means constituting the grinding mechanism from above.

-Explanation of terms for the main parts of the accompanying drawings-

10; Vertical reciprocating means, 10a; Driving,

10b; Power transmission means, 10c; Power conversion means,

10d; Moving plate, 10e; Guide,

11; Servo motor, 12; reducer,

12a; Gear; First rotating shaft,

13a; Gears 14a and 14b; Bevel Gear Assay,

15a, 15b, 15c, 15d; A second rotary shaft, 16; Rack Pinion Assay,

16a; Rack, 16b; Pinion,

17; LM guide, 17a; Guide Shaft,

17b; Slider, 20; Grinding angle control means,

20a; Drive means, 20b; Power conversion means,

20c ', 20c "; Moving plate, 20d; Inclined plate,

20e; Grinding angle adjustment plate, 20f; Safety Measure,

20 g; Guide means, 21; Servo motor,

22; Ball screw, 22a; Screw shaft,

22b; Nut bunch, 23; Support member,

25; Air cylinder, 26; L Guide,

26a; Guide shaft, 26b; Slider,

27; Coupling; Left and Right Round Trip,

30a; Drive means, 30b; Power conversion means,

30c; Moving plate, 30d; Guide,

31; Servo motor, 32; Ball Screw,

32a; Screw shaft, 32b; Nut,

33; LM guide, 33a; Guide Shaft,

33b; Slider, 40; Grinding machine drive motor,

50; Grinding machine 51; Buffing Whetstone,

A, B, C; Hinge.

The present invention for achieving the above object, a grinding machine having a buffing grinder, a grinding machine drive motor for rotating the buffing grinder of the grinding machine; Vertical reciprocating transfer means for linearly reciprocating the grinding machine and the driving motor in a vertical direction; Grinding angle control means for controlling the grinding angle of the grinding machine; It has a structure characterized in that it consists of a left and right reciprocating transfer means for linearly reciprocating the grinding machine and the drive motor in the left and right directions.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 to 4 illustrate a grinding mechanism according to the present invention. Referring to this, a grinding machine 50 for driving a grinding machine 50 having a buffing grindstone 51 and a buffing grinding wheel 51 of the grinding machine 50 is rotated. Motor 40; Vertical reciprocating transfer means (10) for linear reciprocating movement of the grinding machine (50) and the drive motor (40) in the vertical direction; A grinding angle control means 20 for controlling a grinding angle of the grinding machine 50; It is composed of the left and right reciprocating transfer means 30 for linearly reciprocating the grinding machine 50 and the drive motor 40 in the left and right directions, the grinding angle control means 20 is installed on the upper and lower reciprocating transfer means 10, The left and right reciprocating transfer means 30 is installed on the upper part of the grinding angle control means 20, and the grinding machine 50 and the grinding machine driving motor 40 are fixed to the upper and left reciprocating transfer means 30.

The vertical reciprocating transfer means 10, the drive means (10a), the power transmission means (10b) connected to the drive means (10a) for transmitting the rotational force from the drive means (10a) to the power switching means (10c), A power switching means 10c fixed to the power switching means 10c and a power switching means 10c connected to the power transmission means 10b to convert the rotational force from the power transmission means 10b into a linear reciprocating motion in the vertical direction; It consists of a moving plate (10d) is a linear reciprocating movement in the vertical direction by a), and a guide means (10e) for guiding the linear reciprocating movement in the vertical direction of the moving plate (10e). In the present embodiment, the servo motor 11 is used as the driving means 10a, while the gear 13a meshing with the reducer 12 connected to the servomotor 11 and the gear 12a of the reducer 12 are mutually engaged. The first rotary shaft 13 with the bevel gear assemblies 14a and 14b and the bevel gear assemblies 14a and 14b respectively provided at both ends of the first rotary shaft 13 and the first rotary shaft 13. A second rotational shaft 15a, 15b, 15c, 15d having one end engaged with each bevel gear assembly 14a, 14b at an angle of 90 °), as a power transmission means 10b. It was. In addition, the power switching means (10c), the pinion (16b) which is individually fastened to the free ends of the second rotary shaft (15a, 15b, 15c, 15d) and the pinion (16b) is disposed in the vertical direction A rack pinion assembly 16 constituted by a rack 16a was used, and the guide shaft 10e is a guide shaft arranged in a vertical direction in parallel with the rack 16a of the rack pinion assembly 16. LM guide 17 which consists of 17a and the slider 17b which is fixed to the moving plate 16d and is moved along the longitudinal direction of the guide shaft 17a while surrounding the outer peripheral surface of the guide shaft 17a was used. . Therefore, when the servomotor 11 is driven, the driving force of the servomotor 11 is the servomotor 11 → reducer 12 → first rotary shaft 13 → bevel gear assembly 14a, 14b → second rotary shaft. (15a, 15b, 15c, 15d) is transferred to the rack and pinion assembly 16, and the moving plate 10d is linearly reciprocated in the upward or downward direction, while the movable plate 10d is ) Movement is stable.

The grinding angle control means 20 is connected to the driving means 20a and the driving means 20a, and the power switching means 20b converts the rotational force from the driving means 20a into a linear reciprocating motion in the left and right directions. Fixed to the power switching means 20b, the movable plates 20c 'and 20 "are linearly reciprocated in the horizontal direction by the power switching means 20b. The inclined plate 20d in which one end portion is rotatably fixed to the moved structure 10d, and the other end of the inclined plate 20d is rotatably fixed to the other end of the inclined plate 20d. The grinding angle adjustment plate 20e, whose one end is rotatably fixed, and guide means 20g for guiding linear reciprocating movement in the left and right directions of the movable plates 20c 'and 20c ". Driving means 20a for driving the servomotor 21 On the other hand, it is composed of a screw shaft 22a connected to the servomotor 21 and rotated in the same manner, and a nut bundle 22b disposed in the left and right direction (see FIG. 1) while being engaged with the outer circumferential surface of the screw shaft 22a. The used ball screw 22 was used as the power switching means 20b. In addition, the guide shaft 20g is a guide shaft 26a arranged in the left and right directions in parallel with the screw shaft 22a of the ball screw 22. And an L guide 26 composed of a slider 26b which is fixed to the movable plate 20c "while being wrapped around the outer circumferential surface of the guide shaft 26a and moved along the longitudinal direction of the guide shaft 26a. Therefore, when the servomotor 21 is driven, the screw shaft 22a connected to the servomotor 21 is rotated so that the nut bundle 22b and the movable plates 20c 'and 20c "fixed thereto are left and right (Fig. 1) the linear reciprocating movement, whereby the grinding angle adjustment plate 20e is rotated clockwise or counterclockwise about the two hinges B and C, so that the inclined plate 20d is one hinge ( Since it rotates in a clockwise or counterclockwise direction with respect to A), the grinding angle of the grinding machine 50 is adjusted, while the movement of the moving plates 20c 'and 20 "is stably maintained by the LM guide 26. . In addition, as shown in FIG. 1, the movable plates 20c 'and 20c "are divided into two, and the first movable plate 20c' is connected to the nut bundle 22b of the power switching means 20b. , The second movable plate 20c "is connected to the slider 26b of the guide means 20g, and the first movable plate 20c 'and the second movable plate 20c" are connected to each other via the safety means 20f. The safety means 20f may be connected to the left side of the second moving plate 20c " in an instantaneously fast time when a safety accident occurs or when the buffing wheel 51 of the grinder 50 is overloaded. In the direction (see Fig. 1), the inclined plate 20d is rotated in the clockwise direction so that the buffing grindstone 51 of the grinding machine 50 sags downward, i.e., a predetermined distance from the grinding position ensures a safety distance. In this embodiment, the air cylinder 25 is used, but it is expanded or contracted. All known ones that can be spaced apart from the first moving plate 20c 'from the first moving plate 20c' instantaneously and rapidly are controlled.

The left and right reciprocating transfer means 30, drive means (30a) and; A power switching means 30b connected to the driving means 30a to convert the rotational force from the driving means 30a into a linear reciprocating motion in the left and right directions; A moving plate 30c fixed to the power switching means 30b and linearly reciprocating in the left and right directions by the power switching means 30b; And a guide means (30d) for guiding the linear reciprocating movement in the left and right directions of the moving plate (30c). In this embodiment, the servo motor 31 is used as the driving means 30a, while the screw shaft 32a is connected to the servomotor 31 and rotates in the same direction, and is engaged with the outer circumferential surface of the screw shaft 32a. A ball screw 32 composed of a nut bundle 32b arranged in (see Fig. 1) was used as the power switching means 30b. In addition, as the guide means 30d, the movable plate 30c is wrapped around the outer circumferential surface of the guide shaft 33a and the guide shaft 33a arranged in the left and right direction while being parallel to the screw shaft 32a of the ball screw 32. The L guide 33 which is fixed to the slider 33b which is moved along the longitudinal direction of the guide shaft 33a is used. Therefore, when the servo motor 31 is driven, the screw shaft 32a connected to the servomotor 31 is rotated so that the nut bundle 32b and the movable plate 30c fixed thereto are inclined by the inclination angle control means 20. Since the linear reciprocating movement in the left and right directions (see Fig. 1) in parallel with the plate 20d, the grinding machine 50 and the grinder drive motor 40 installed on the upper surface of the moving plate 30c moves together with the moving plate 30c. Is reciprocated by a straight line.

According to the invention, since the position of the grinding machine 50 is controlled by the up and down reciprocating transfer means 10 and the reciprocating transfer means 30, by a separate control means (not shown) for automatically controlling the operation of the grinding mechanism. The grinding position is automatically set for each type of tire.

In addition, since the grinding angle of the buffing grindstone 51 is controlled by the grinding angle control means 20, the optimum buffing angle is automatically set for each type of tire, and the grinding angle is reduced by using one grinding machine buffing grindstone 51. A plurality of portions on the sidewall portion of the tire facing in the direction can be buffed. In more detail, when the grinding machine is fastened to an arbitrary structure in consideration of the grinding position and the grinding angle of the grinding machine as in the related art, the grinding wheel buffing wheel 51 is arbitrarily disposed on the sidewall portion spaced from the center of the tire by a predetermined distance. Since only the circumferential portion of is buffed, if the buffing surfaces are located at different distances from the center of the tire, two grinding machines 50 correspondingly arranged are required to buff all of them. In the case of the grinding mechanism according to the present invention, the grinding machine buffing the grinding machine 50 through the grinding angle control means 20 while moving the two positions through the vertical reciprocating transfer means 10 and the reciprocating transfer means 30. The grindstone 51 grinds the tire while making an optimum grinding angle at each grinding position.

According to the present invention as described above, while the grinding machine is moved by the upper and lower reciprocating means and the left and right reciprocating means, the grinding angle of the grinding machine is controlled by the grinding angle control means, so that the sidewall portion facing the tire downward direction Since the buffing process, the trouble of having to readjust the position of the grinding machine manually by the type of tire according to the conventional type is eliminated.

In addition, the position and grinding angle of the grinding machine are accurately set by the up and down reciprocating transfer means, the reciprocating transfer means and the grinding angle control means, so that the number of repetitions of the buffing experiment for optimal position setting is greatly reduced, or the experiment itself Since it becomes unnecessary, it is possible to reduce the waste of tires, thereby reducing the occurrence of defects due to operation errors, while the maintenance and maintenance is advantageous and convenient.

The present invention is not limited to the embodiments as described above, and of course, various modifications can be made without departing from the scope of the following claims.

Claims (5)

A grinding machine 50 having a buffing grindstone 51; A grinding machine driving motor 40 for rotating the buffing grindstone 51 of the grinding machine 50; Vertical reciprocating transfer means (10) for linear reciprocating movement of the grinding machine (50) and the drive motor (40) in the vertical direction; A grinding angle control means 20 for controlling a grinding angle of the grinding machine 50; Grinding mechanism (50) and grinding mechanism of the tire buffing device, characterized in that consisting of the left and right reciprocating transfer means (30) for linear reciprocating movement in the horizontal direction. The method of claim 1, wherein the up and down reciprocating transfer means 10, drive means (10a); A power transmission means (10b) connected to the drive means (10a) to transfer the rotational force from the drive means (10a) to the power switching means (10c); A power switching means (10c) connected to the power transmission means (10b) for converting the rotational force from the power transmission means (10b) into a linear reciprocating motion in the vertical direction; A moving plate 10d fixed to the power switching means 10c and linearly reciprocating in the vertical direction by the power switching means 10c; Grinding mechanism of the tire buffing device, characterized in that consisting of a guide means (10e) for guiding a linear reciprocating movement in the vertical direction of the moving plate (10e). 2. The grinding angle control means (20) according to claim 1, further comprising: drive means (20a); A power switching means 20b connected to the driving means 20a for converting the rotational force from the driving means 20a into a linear reciprocating motion in the horizontal direction; Moving plates 20c 'and 20 "fixed to the power switching means 20b and linearly reciprocated in the left and right directions by the power switching means 20b; provided in the up and down reciprocating transfer means 10, and the linear reciprocating movement in the vertical direction An inclined plate 20d in which one end portion is rotatably fixed to the structure 10d to be formed; one end is rotatably fixed to the other end of the inclined plate 20d, and the other in the movable plate 20c " A grinding angle adjustment plate 20e having a front end fixed rotatably; Grinding mechanism of the tire buffing device, characterized in that made of a guide means (20g) for guiding a linear reciprocating movement of the moving plates (20c ', 20c ") in the left and right directions. 4. The moving plate (20c ', 20c ") of claim 3, wherein the first moving plate (20c') connected to the power switching means and the second moving plate (20c") connected to the guide means (20g). Grinding mechanism of the tire buffing device, characterized in that the first moving plate (20c ') and the second moving plate (20c ") is connected to each other via the safety means (20f). The method of claim 1, wherein the left and right reciprocating transfer means 30, drive means (30a) and; A power switching means 30b connected to the driving means 30a to convert the rotational force from the driving means 30a into a linear reciprocating motion in the left and right directions; A moving plate 30c fixed to the power switching means 30b and linearly reciprocating in a horizontal direction by the power switching means 30b; and guide means for guiding a linear reciprocating movement in the left and right directions of the moving plate 30c ( Grinding mechanism of the tire buffing device, characterized in that consisting of 30d).