JP6795838B2 - Balance weight crimping device - Google Patents

Description

The present invention relates to a balance weight crimping device which is installed in a production line of an automobile or the like and crimps an adhesive balance weight to an inner peripheral portion of a wheel with a tire.

Adhesive balance weights may be attached to the inner circumference of the wheel on which the tire is assembled to adjust the rotational balance of the wheel with the tire. The balance weight crimping device described in Patent Document 1 includes a support mechanism for supporting a wheel with a tire, a roller pressing mechanism for pressing a balance weight by bringing a roller close to the back surface of the rim of the wheel with a tire, and the roller along the back surface of the rim. Includes a roller rotation mechanism that rotates the tires. In this balance weight crimping device, the wheel with tire is stationary with the open end of the back surface of the rim facing downward, and the roller and roller pressing mechanism are inserted from below into the inner space surrounded by the back surface of the rim. Is done. Then, while the wheel with the tire is still stationary, the roller pressing mechanism rotates around the rotation axis of the wheel with the tire, so that the roller orbits along the back surface of the rim. As a result, the balance weight is fixed by being crimped to the back surface of the rim by the roller.

Japanese Patent No. 4661295

When the roller and the roller pressing mechanism are rotated while the wheel with tire is stationary as in the balance weight crimping device described in Patent Document 1, a dedicated roller rotating mechanism is provided around the roller pressing mechanism. Need to be placed. This complicates the configuration around the roller pressing mechanism.
The present invention has been made to solve such a problem, and an object of the present invention is to provide a balance weight crimping device capable of crimping an adhesive balance weight to an inner peripheral portion of a wheel with a tire by a simple structure.

The present invention is a balance weight crimping device (1) for crimping an adhesive balance weight (W) to an inner peripheral portion (H3) of a wheel with a tire (H), and the inner circumference of the wheel with a tire in a collapsed state. An advancing / retreating portion (6) capable of advancing / retreating from the vertical direction with respect to the inner space (H5) surrounded by the portions, and a tired portion provided in the advancing / retreating portion with the advancing / retreating portion entering the inner space of the wheel with tires. Rotation to rotate the tired wheel around the vertical axis (J) with the pressing portion (7) that presses the inner peripheral portion of the wheel from the inside in the radial direction (R) and the inner peripheral portion pressed by the pressing portion. It is a balance weight crimping device including a part (3). The alphanumeric characters in parentheses represent the corresponding components and the like in the embodiments described later.

According to this configuration, if the advancing / retreating portion is made to enter the inner space of the wheel with tire and the inner peripheral portion of the wheel with tire is pressed by the pressing portion, the advancing / retreating portion and the pressing portion are not further moved. When the wheel is rotated, the balance weight adhered to the inner peripheral portion is pressed against the inner peripheral portion when passing through the pressing portion, and is crimped. That is, the balance weight can be crimped to the inner peripheral portion of the tired wheel by the simple configuration of rotating the tired wheel in this way.

Further, the present invention is characterized in that the rotating portion includes a roller (21) that rotates around a vertical axis (G) in a state of being in contact with an outer peripheral portion (H4) of the wheel with tires.
According to this configuration, the wheel with tires can be rotated by a simple configuration using rollers, and the balance weight can be crimped to the inner peripheral portion of the wheel with tires.
Further, the present invention is characterized by including a detection unit (70) for detecting the runout of the tired wheel in a state where the rotating unit is rotating the tired wheel.

According to this configuration, when the wheel with tires is rotating, not only the balance weight is crimped to the inner peripheral portion of the wheel with tires, but also the runout can be measured from the wheel with tires during rotation. It is possible to improve work efficiency on production lines and shorten cycle time.

FIG. 1 is a plan view of a balance weight crimping device according to an embodiment of the present invention. FIG. 2 is a front view of the balance weight crimping device. FIG. 3 is a plan view of the balance weight crimping device in the operating state. FIG. 4 is a front view of the balance weight crimping device in the operating state. FIG. 5 is a side view of the balance weight crimping device in the operating state as viewed from the downstream side in the transport direction of the wheel with tire.

Hereinafter, the balance weight crimping device 1 (hereinafter, abbreviated as “device 1”) according to the embodiment of the present invention will be described in detail. With reference to FIGS. 1 and 2, the apparatus 1 includes a transport unit 2, a rotating unit 3, an elevating unit 4, a support unit 5, an advancing / retreating unit 6, and a pressing unit 7.
The transport unit 2 includes a frame 10 arranged at a position above the floor surface Y, a roller conveyor 11 supported by the frame 10 and extending substantially horizontally, and a motor 12 fixed to the frame 10. In the roller conveyor 11, the upper ends of the outer peripheral surfaces of the plurality of rollers 13 arranged in the transport direction X of the tired wheels H (see FIG. 3) are at substantially the same height position and extend substantially horizontally as part of the production line. It constitutes a transport surface 14 (see FIG. 2). All the rollers 13 rotate in the same direction by receiving the driving force of the motor 12 by, for example, chain driving. In the middle of the roller conveyor 11 in the transport direction X, a relatively wide space 15 is secured between two adjacent rollers 13, and the roller conveyor 11 is interrupted in the space 15.

There are a pair of rotating portions 3. The pair of rotating portions 3 are arranged on both sides of the space 15 in the orthogonal direction T orthogonal to the transport direction X in a plan view. Each rotating portion 3 includes a vertical frame 20 and a pair of rollers 21 arranged side by side in the transport direction X at the upper end portion of the vertical frame 20. Each roller 21 is supported by a vertical frame 20 in a state of being rotatable around a vertical axis G passing through its center and facing a space 15. One rotating portion 3A includes a motor 22 fixed to the vertical frame 20 thereof. One roller 21A in the rotating portion 3A is driven and rotated by receiving the driving force of the motor 22 by, for example, belt driving. All other rollers 21 are free rollers that do not receive driving force. Of course, all four rollers 21 may be driven and rotated.

In each rotating portion 3, the lower end portion of the vertical frame 20 is fixed to the floor surface Y and connected to a guide rail 23 extending in the orthogonal direction T. These rotating portions 3 can slide along the guide rail 23 according to the operation of the actuator 24 such as an air cylinder, and can approach or separate from each other in the orthogonal direction T. Each rotating portion 3 in FIG. 1 is in a standby position separated from the space 15 in the orthogonal direction T.

The elevating portion 4 is formed in a flat plate shape extending substantially horizontally, and is arranged directly below the space 15. In connection with the elevating part 4, the device 1 includes a support frame 30 and a motor 31 extending vertically from the floor surface Y (see FIG. 2). The elevating portion 4 is supported by a support frame 30 via a linear guide 32 (see FIG. 2), and elevates and elevates by receiving a driving force of a motor 31 via a ball screw mechanism (not shown). The elevating part 4 in FIG. 2 is in a standby position away from the space 15 downward.

The support portion 5 includes four support rollers 40 arranged in a cross shape, for example, in a plan view. Each support roller 40 is a rotatable free roller, and is fixed to the upper surface of the elevating portion 4 via a bracket 41 (see FIG. 2).
The advancing / retreating portion 6 is attached to an area surrounded by four support rollers 40 on the upper surface of the elevating portion 4. The advancing / retreating portion 6 includes a pair of actuators 50. Each actuator 50 is, for example, an air cylinder, and has a rod 51 that moves forward and backward in a substantially horizontal direction according to its drive. The advancing directions of the rods 51 in the pair of actuators 50 are opposite to each other. In the case of FIG. 1, the rod 51 in one actuator 50A advances to the upstream side in the transport direction X, while the rod 51 in one actuator 50B advances to the downstream side in the transport direction X. The rod 51 of each actuator 50 in FIG. 1 is in the retracted position.

The pressing portion 7 is a free roller and is rotatable around a vertical axis passing through the center thereof. The two pressing portions 7 are attached to the tip ends of the rods 51 of each actuator 50 of the advancing / retreating portions 6 via the bracket 52. With reference to FIG. 2, the pressing portion 7 is located above each of the supporting rollers 40 of the supporting portion 5. In the state where the elevating portion 4 is in the standby position, each pressing portion 7 is separated from the conveying surface 14 downward from the transport surface 14 directly below the space 15 together with the supporting portion 5 and the advancing / retreating portion 6.

The operations of the transport unit 2, the rotating unit 3, the elevating unit 4, and the advancing / retreating unit 6 in the device 1 are controlled by a control unit 60 configured by a microcomputer or the like.
Next, the operation of the device 1 will be described. With reference to FIGS. 3 and 4, in the wheel with tire H whose rotational balance was measured in the upstream process of the production line, the disc portion H2 in which the hub hole H1 is formed is located above the rim portion H3. It is delivered to the device 1 in a state of being tilted substantially horizontally, and is transported on the transport surface 14 by the transport unit 2. A known adhesive type balance weight W is preliminarily adhered to a position designated on the inner peripheral surface of the rim portion H3 according to the measurement result of the rotational balance by manual work or the like of an operator. When the wheel H with tires overlaps the space 15 in the middle of the roller conveyor 11 in the transport direction X, the transport of the wheel H with tires is stopped.

Next, as shown in FIG. 3, the pair of rotating portions 3 that have been in the standby positions slide so as to approach each other, and the wheels H with tires in the collapsed state are sandwiched from the orthogonal direction T to convey the wheels. It leads to the center side of the orthogonal direction T on the surface 14. As a result, the wheel H with tires is pre-centered for remeasurement of the rotational balance in the downstream process of the production line. In each rotating portion 3 in the state where the slide is stopped, the outer peripheral surface of each roller 21 is in contact with the outer peripheral portion H4 of the tired wheel H, that is, the tread surface of the tire from the outside in the radial direction R of the tired wheel H. .. At this time, a total of four rollers 21 are positioned by contacting the outer peripheral portion H4 of the tired wheel H in a state of being substantially evenly arranged in the circumferential direction S of the tired wheel H to position the tired wheel H.

Next, as shown in FIG. 4, the elevating part 4 rises from the conventional standby position. As a result, the supporting portion 5 and the advancing / retreating portion 6 that have risen together with the elevating portion 4 pass through the space 15 in the middle of the roller conveyor 11 and protrude above the transport surface 14. In the support portion 5, four support rollers 40 come into contact with the wheel H with tires in a fallen state from below, and support the wheel H with tires in a state of being lifted from the transport surface 14. The advancing / retreating portion 6 enters the inner peripheral portion of the tired wheel H, that is, the inner space H5 surrounded by the cylindrical rim portion H3 from below. In this state, the pressing portion 7 provided on each rod 51 in the retracted position in the advancing / retreating portion 6 is arranged in the inner space H5 and faces the inner peripheral surface of the rim portion H3 from the inside in the radial direction R.

In the state where the advancing / retreating portion 6 and the pressing portion 7 have entered the inner space H5 in this way, as shown in FIG. 4, each rod 51 of the advancing / retreating portion 6 advances to the outside in the radial direction R from the retracted position so far. , The outer peripheral surface of each pressing portion 7 presses the rim portion H3 from the inside in the radial direction R. After that, the roller 21A (see FIG. 3) of the rotating portion 3A is driven and rotated around the vertical axis G in a state of being in contact with the outer peripheral portion H4 of the wheel with tire H. As a result, the tired wheel H in the state where the rim portion H3 is pressed by the pressing portion 7 rotates around the vertical axis J passing through the center of the tired wheel H. Further, like the roller 21A, each of the other three rollers 21 (see FIG. 3) in contact with the tired wheel H is driven and rotated around the vertical axis G. By rotating the four support rollers 40 on which the tired wheel H is mounted, the tired wheel H can rotate stably on the support roller 40.

If the advancing / retreating portion 6 is made to enter the inner space H5 of the tired wheel H and the rim portion H3 of the tired wheel H is pressed by the pressing portion 7 as described above, then the advancing / retreating portion 6 and the pressing portion 7 are further pressed. If the wheel with tire H is rotated without moving, the balance weight W that is adhered to the rim portion H3 and rotates integrally with the wheel H with tire is pressed by the rim portion H3 when passing through the pressing portion 7. As a result, it is crimped and fixed to the rim portion H3. That is, the balance weight W can be crimped to the rim portion H3 of the wheel H with tires by a simple configuration in which the wheel H with tires is rotated while the advancing / retreating portion 6 and the pressing portion 7 after approaching are stationary. In particular, the wheel H with tires can be rotated by the rotating portion 3 having a simple structure using the rollers 21, and the balance weight W can be crimped to the rim portion H3 of the wheel H with tires. While the wheel H with tires is rotating, each pressing portion 7 in contact with the rim portion H3 may be stationary or may rotate in conjunction with the rotation of the wheel H with tires.

With reference to FIG. 5, the device 1 may further include a detection unit 70 that detects the runout of the rotating tired wheel H. The runout of the tired wheel H is a variation in shape existing over the entire circumference of the tired wheel H, and exists in each of the radial direction R and the axial direction A of the tired wheel H. The detection unit 70 includes a first detection unit 70A for measuring the runout in the radial direction R in a non-contact manner, and a second detection unit 70B for measuring the runout in the axial direction A in a non-contact manner. As the first detection unit 70A and the second detection unit 70B, non-contact displacement sensors such as a laser displacement sensor and a capacitance type displacement sensor can be used. The first detection unit 70A is fixed, for example, in the vertical frame 20 of one of the rotating portions 3A in the pair of rotating portions 3 so as to face the outer peripheral portion H4 of the fallen tired wheel H from the outside in the radial direction R. .. The second detection unit 70B is fixed to the vertical frame 20 of the other rotating unit 3B via, for example, the stay 71, and in this state, faces the upper surface portion H6 of the fallen tired wheel H from above.

In relation to the detection of runout, a marking (not shown) for generating a reference signal of one pulse for each rotation of the tired wheel H is attached to one place on the circumference of the tired wheel H. .. The configuration for marking (not shown) may be provided in the device 1 or in a station for measuring the rotational balance in the upstream process. Further, one of the markings attached to the disproportionate portion of the wheel H with tires when measuring the rotational balance may be used as markings for detecting runout. Further, a reference signal detection sensor 72 for detecting a reference signal based on the marking is provided on any of the devices 1 (for example, the elevating part 4) (see FIG. 3). As the reference signal detection sensor 72, a known color mark sensor or the like can be used.

During the rotation of the tired wheel H by the rotating unit 3, the detection unit 70 detects the runout of the tired wheel H, and the first detection unit 70A and the second detection unit 70B of the detection unit 70 detect the runout in the radial direction R. The original signals of the respective runouts in the axial direction A and the axial direction A are input to the control unit 60. Further, every time the wheel H with tires makes one rotation, a reference signal from the reference signal detection sensor 72 is input to the control unit 60. Even if an error occurs in each signal due to rotation fluctuation of the wheel H with tires or the like, the control unit 60 filters the error in the input signal as noise. From each input signal, the control unit 60 is the primary of the magnitude (swing amount) of each of the radial direction R and the axial direction A generated during one rotation of the tired wheel H and the angular position in the circumferential direction S. The component is detected and the pass / fail judgment of the runout is made.

As described above, in the state where the wheel H with tires is rotating, not only the balance weight W is crimped to the rim portion H3 of the wheel H with tires, but also the measurement of runout that cannot be measured unless the wheel H with tires is rotating. It is also possible to improve the work efficiency on the production line and shorten the cycle time. Further, since it is not necessary to separately provide a measurement station for measuring the runout of the wheel H with tires on the production line, space saving and cost reduction on the production line can be achieved.

When the crimping of the balance weight W to the rim portion H3 of the tired wheel H and the detection of the runout of the tired wheel H are completed in this way, each rod 51 of the advancing / retreating portion 6 returns to the retracted position, and the elevating portion 4 moves. It descends to the standby position, and the pair of rotating parts 3 returns to the standby position (see FIGS. 1 and 2). As the elevating part 4 descends, the advancing / retreating part 6 retracts downward from the inner space H5 of the tired wheel H, and the tired wheel H (see FIG. 4) that has been lifted from the transport surface 14 until now. It descends and rests on the transport surface 14. Next, the drive of the roller conveyor 11 is restarted and each roller 13 is driven and rotated, so that the wheel H with tires on the transfer surface 14 is conveyed to the downstream side in the transfer direction X. As a result, the wheel H with tires is carried out from the device 1 and undergoes a remeasurement of the rotational balance in the downstream process.

The present invention is not limited to the embodiments described above, and various modifications can be made within the scope of the claims.
For example, in the above-described embodiment, the balance weight W is rimmed by rotating the wheel H with a tire so that the disc portion H2 is located above the rim portion H3 and the inner space H5 is opened downward. Although it is crimped to the portion H3, the vertical direction of the wheel H with tires may be reversed. That is, there is also a configuration in which the balance weight W is crimped to the rim portion H3 with the wheel H with tires tilted so that the disc portion H2 is located below the rim portion H3 and the inner space H5 is opened upward. possible. In this case, the advancing / retreating portion 6 provided with the pressing portion 7 is arranged above the tired wheel H so that it can advance / retreat from the upper side with respect to the inner space H5 of the tired wheel H. Will be done.

Further, the advancing / retreating portion 6 may be independently movable in a state of being attached to the elevating portion 4, and in that case, an actuator (not shown) for raising / lowering the advancing / retreating portion 6 is provided on the elevating portion 4. It is provided. When the balance weights W are adhered to a plurality of positions different in the vertical direction on the inner peripheral surface of the rim portion H3 of the wheel H with the tire in the collapsed state, the advancing / retreating portion 6 corresponds to the position of each balance weight W. Since the height position of the pressing portion 7 is adjusted by moving up and down, each balance weight W having a different height position can be reliably crimped by the pressing portion 7.

1 Balance weight crimping device 3 Rotating part 6 Advancing / retreating part 7 Pressing part 21 Roller 70 Detection part G Vertical axis H Wheel with tire H3 Rim part H4 Outer part H5 Inner space J Vertical axis R Radial direction W Balance weight

Claims (3)

A balance weight crimping device that crimps an adhesive balance weight to the inner circumference of a wheel with tires.
A transport unit that has a transport surface that extends substantially horizontally and has a space in the middle, and that transports the wheel with tires in a fallen state on the transport surface.
An elevating part that can be elevated and lowered through the space,
An advancing / retreating portion that can advance / retreat from the lower side by ascending / descending together with the elevating portion with respect to the inner space surrounded by the inner peripheral portion in the wheel with a tire in a collapsed state.
A support roller that can be raised and lowered together with the elevating portion, and supports the wheel with tires in a state of being lifted from the transport surface when the advancing and retreating portions have entered the inner space of the wheel with tires in response to the ascent of the elevating portion. When,
A pressing portion provided in the advancing / retreating portion and pressing the inner peripheral portion of the tired wheel from the inside in the radial direction when the advancing / retreating portion has entered the inner space of the wheel with tire in response to the ascent of the elevating portion .
A rotating portion that rotates a wheel with a tire around a vertical axis when the inner peripheral portion is pressed by the pressing portion, and includes a roller that rotates around the vertical axis in a state of being in contact with the outer peripheral portion of the wheel with a tire. Balance weight crimping device including rotating parts. The advancing / retreating portion includes a pair of actuators arranged side by side.
These actuators have rods that advance in opposite directions to each other.
The balance weight crimping device according to claim 1 , wherein the pressing portion is provided at the tip end portion of each rod . The advancing / retreating portion can be raised and lowered independently in a state of being attached to the elevating portion.
The balance weight crimping device according to claim 1 or 2, further comprising a detection unit that detects the runout of the tired wheel in a non-contact manner while the rotating portion is rotating the tired wheel.

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