JPH046622B2 - - Google Patents

Abstract

PURPOSE:To automatically transfer and replace raw tires in a small space by providing a chain conveyer provided with a carrier stocking raw tires, a raw tire grasping unit and a lift unit under a hunger conveyer unit. CONSTITUTION:Under an endless hunger conveyer unit 100 having a plurality of hungers 130 is longitudinally arranged a chain conveyer 240 having a raw tire stocking carrier 250 formed to support at least two raw tires W on a chain 241 endlessly circulating. On a portion of this chain conveyer 240 are provided a raw tire grasping unit 260 for grasping the raw tire W on this carrier 250 and a lift unit 280 for lifting the grasped tire W and transferring sequentially the tire W to the hunger 130 of the above hunger conveyer unit 100.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a green tire setting device, and more specifically, a green tire setting device that efficiently transports a molded green tire to a vulcanization process. It is related to.

[Prior art]

Conventionally, methods for transporting molded green tires to the vulcanization process include, for example, loading the green tires on a storage trolley and transporting them to the next process, or installing a hanger conveyor device on the molding machine, and then transporting the green tires to the vulcanization process. A method is known in which green tires are sequentially transferred to a hanger and transported (Japanese Patent Application Laid-Open No. 112980/1983).

By the way, in the case of the conventional transportation method as described above, in the former case, a carrier is always required, and this carrier has to switch between the real truck and the empty truck, so productivity is extremely low. There was also the problem that unmanned transport required a large amount of equipment cost.

In the latter case, it is necessary for a worker to hang each green tire on the hanger conveyor, which is not only inefficient but also dangerous.

[Purpose of the invention]

This invention was devised by focusing on the conventional problems, and its purpose is to automatically perform the transfer work and replacement work of green tires in the green tire transportation process. To provide a green tire setting device that improves productivity in the green tire conveyance process, improves workability, and allows molded green tires to be efficiently conveyed to the vulcanization process. .

[Structure of the invention]

In order to achieve the above-mentioned object, this invention consists of a plurality of U-shaped pipes, presser bars, and support plates configured to be able to support at least two sides of a green tire in two endless chains that circulate in the vertical direction. carriers are mounted horizontally at a predetermined interval, and a tire gripping device is mounted on the upper part of the two chains and vertically grips the outer peripheral surface of the green tire being conveyed by the carriers with a plurality of expandable and contractible arms. , a lifting device for raising and lowering the tire gripping device is installed, and above the tire gripping device and the lifting device, raw tires gripped vertically by the tire gripping device are sequentially pulled to a hanger that moves at a constant speed. The gist is that an endless hanger conveyor device is provided to hang the hanger and transport it to the next process.

[Embodiments of the invention]

Embodiments of the present invention will be described below based on the accompanying drawings.

1 and 2 show a hanger conveyor device 100 and a setting device 20 according to the present invention.
0 shows a front view and a side view of 0.

In the hanger conveyor device 100, an endless rail 110 is laid on a setting device 200, and a chain 1 is installed in the rail 110.
20 are rotating at the same speed via a drive motor (not shown).

On the chain 120, a plurality of hangers 130 having a U-shaped cross section on which the raw tires W are hung are hung at predetermined intervals, and the hangers 130 move in the direction of travel (in the direction of the arrow), and
The raw tire W is conveyed by hooking the inner surface of the bead.

Next, the setting device 200 includes a roller conveyor 210, a chain conveyor 240, a green tire gripping device 260, and a lifting device 280.

The roller conveyor 210 has a plurality of freely rotating rollers 211 lined up, the tips of the rollers 211 protruding from the frame, and a U-shaped pipe 244 of a carrier 250, which will be described later, passes through the cutout.

A photoelectric switch PH1 is provided above the roller conveyor 210, and this photoelectric switch PH1 detects the presence or absence of green tires W. The positional relationship between the upper surface of the roller conveyor 210 and the carrier 250 is such that the carrier 250 is stopped at a position where the green tire W enters to the left in FIG. next,
The chain conveyor 240 includes a chain 24 with attachments stretched in an endless manner as shown in FIG.
Chain 24 with two threads of 1 and each attachment
1 meshes with a sprocket 242 having the same number of teeth on the left and right sides. Chain 24 with 2 thread attachments
A T-shaped plate 243 is fixed to the inner mounting seat 1. This T-shaped plate 243 has a U-shaped pipe 244
is fixed, and a shaft 245 is fixed to both ends. A support plate 246 having a semicircular arc cross section is fixed to the shaft 245 on both sides, and it is preferable that the curvature of the support plate 246 corresponds to the curvature of the green tire W.

Further, the U-shaped pipe 244 and the presser bar 247 are set to dimensions such that the bead portion of the green tire W fits into the U-shaped portion of the U-shaped pipe 244 and the presser bar 247, as shown in FIGS. 6 and 7. A pipe 249 is fixed to a guide plate 248 attached to the upper end of the shaft 245, and is configured to be able to slide on this shaft 245, so that when the width of the green tire W changes,
It can be adjusted by sliding it.

Although not shown, it is also possible to fix the pipe 249 and the shaft 245 using a pin or the like if the interval is determined.

The presser bar 247 has the effect of preventing the green tire W from tipping over when the green tire W is oriented vertically as shown in FIG. When the green tire W is transferred to the carrier 250, if the chain 241 is stretched in the vertical direction as shown in FIG.
A force acts to cause the mold pipe 244 to rotate clockwise around the chain 241. As shown in Figures 1 to 3, the chain guide rail 2
51a, 251b and 252a, 252b guide the rollers 241a of the chain 241, thereby preventing large swings of the U-shaped pipe 244. Chain guide rails 251a, 251b and 252a,
252b is fixed to the machine frame 300.

Although a plurality of carriers 250 are shown in FIG. 1, the number is not particularly limited.

The sprocket 242 has shafts 253a, 25
3b, 253c, and 253d, respectively, and the shaft 2
5a is the bearing member 254a, and the shaft 253b is
The shaft 253c is mounted on the take-up type bearing 254b, the shaft 253c is mounted on the bearing 254c, and the shaft 253d is mounted on the bearing 254d for rotation.

A sprocket 25 is attached to the end of the shaft 253a.
5 is fixed, and a chain 259 is stretched between this sprocket 255 and a sprocket 258 fixed to an output shaft 257 of a reduction gear with a brake motor 256. Reducer with brake motor 256
is fixed to the machine frame 300. When the output shaft 257 of the reduction gear with brake motor 256 rotates, the driving force is transmitted to the shaft 253a through the chain 259, and the sprocket 242 rotates and the chain with attachment 241 moves. 250 also moves.

Next, the tire gripping device 260 is operated as shown in FIGS.
As shown in the figure, the shafts 262 and 26 are attached to the frame 261.
3 is rotatably supported, and arms 264 are each fixed to this shaft 262. Arm 2
64, where the green tire W comes into contact with the tip,
A plurality of rollers 265 are rotatably attached. Further, an arm 266 is fixed to the shaft 263, and a green tire W at the tip of the arm 266 is fixed to the shaft 263.
A plate 267 is attached to the portion that comes into contact with.

Two cylinders 267a, 267b for rotating arms 264, 266 are fixed to frame 261 via brackets 268a, 268b, respectively.

Metal fittings 270a, 270b are attached to the tip of the rod of each cylinder 267a, 267b,
An arm 271 fixed to the other end of the shaft 262 and a metal fitting 270b are connected via a pin 273, and the shaft 2
The arm 274 fixed to 63 and the metal fitting 270a are connected by a pin 276.

When air pressure is supplied to the opposite side of the cylinder 267a, the cylinder rod protrudes and the arm 26
4 rotates toward the green tire W side. Conversely, when air pressure is supplied to the rod side, each arm 264 returns to the position indicated by the two-dot chain line in FIG.

Also, when air pressure is supplied to the opposite side of the cylinder 267b, the cylinder rod comes out and the arm 26
6 rotates, and the upper part of the raw tire W is attached to the plate 267.
presses lightly. Conversely, when air pressure is supplied to the rod side, the arm 266 rises and opens to the position shown by the two-dot chain line.

When the raw tire W is gripped (FIG. 4), the cylinder 267a is stopped at the stroke end.

The pressing force of this cylinder 267a is
Arm 264 overcomes the weight of 4 and raw tires W
A pressing force is required to hold the

Further, the arm 266 is adjusted to a pressing force of the cylinder 267b such that the plate 267 lightly presses the upper side of the raw tire W. By making the tip of the arm 264 a roller 265, the left and right arms 26
Even if the speed of 4 increases differently, the raw tire W
and rollers 265, both arms 26
At the rising limit point of 4,266, the center of the green tire W is in the middle of the shaft 262.

Furthermore, although the vertical axis varies depending on the outer diameter of the raw tire W, this does not pose a problem because the tire mounting portion of the hanger 130 is much smaller than the bead diameter of the raw tire W.

Next, the lifting device 280 moves the cylinder 281 onto the machine frame 300 as shown in FIGS.
A float coupler 283 is fixed to the cylinder rod 282. The float coupler 283 is
Attach to bracket 284, lift frame 285
Fixed to. Further, two guide rods 286 are respectively fixed to the elevating frame 285, an elevating guide frame 287 is attached to the machine frame frame 300, and a linear ball bearing 288 is attached to the elevating guide frame 287. The guide rod 286 moves up and down slightly on a linear ball bearing 288. The upper parts of both guide rods 286 are connected to the frame 261.
Fixed to. When air pressure is supplied to the side opposite to the rod of the cylinder 281, the elevating frame 285 rises. Therefore, the green tire gripping device 260 fixed to the guide rod 286 is simultaneously raised.

In FIGS. 1 and 2, PH1 is a photoelectric switch for detecting the presence or absence of a green tire W on the roller conveyor 210 as described above, PH2 is a photoelectric switch for detecting the presence or absence of a green tire in the green tire gripping device 260, PH3 is a photoelectric switch on the hanger 130 for detecting the presence or absence of a tire.

Further, PR1 is a proximity switch that detects the head of the hanger 130 divided into the set number of hangers, and detects it by attaching an iron piece to the head hanger 130.

PR2 is a proximity switch for the tire gripping and rising signal of the setting device 200, and the hanger 130 is
A signal will be emitted when you pass PR2. PR3 is a proximity switch that releases the tire grip in a state where the hanger 130 is placed in the bead of the raised raw tire W and issues a lowering signal. PR
5 is a proximity switch for stopping the carrier 250;
Carrier 2 on chain 241 with attachment
Attach iron pieces at the same intervals as 50 and take the signal. During standby, the carrier 250 is adjusted so that it stops at a position where the upper surface of the roller conveyor 210 is approximately at the same level.
PR4 is a proximity switch for the stop signal of the carrier 250 to the gripping device.

Next, automatic operation of the present invention will be explained. First, at the time of starting, the most advanced carrier 250 is stopped at section X1 in FIG.

Next, the raw tire W is placed on the roller conveyor 210, and the tread portion of the raw tire W is placed on the carrier 250.
Push it in until it contacts the support plate 246 of.
When the photoelectric switch PH1 for detecting the presence or absence of a green tire W is blocked from light for a certain period of time, the carrier 250 is moved by one pitch by the brake motor-equipped reducer 256.
Stop at position X2. The next green tire W is placed on the roller conveyor 210, pushed in the same manner as above, and placed on the next carrier 250. In Fig. 1, the raw tire W is placed on the carrier 250 in the shape shown in Fig.
0, it is placed on the carrier 250 as shown in FIG.

The number of tires to be set is 10 in Fig. 1, and when the 10th raw tire W is placed on the X1 section, the pitch feed is stopped by the proximity switch PR4. Setting device 20
0 is ready, then the leading hanger 130 passes the proximity switch PR1, and when the proximity switch PR3 detects that there is no green tire W, the hanger 130 comes to the proximity switch PR2 and the presence detection photoelectric switch PH2 is activated. If the light is blocked, the raw tire W
Grab it and rise.

Note that W1 indicates a raised raw tire.

At the position where the hanger 130 enters the bead portion (when the hanger 130 reaches the proximity switch PR3), the green tire gripping device 260 releases the green tire W and lowers it. On the other hand, the chain conveyor 240 starts moving one pitch after the green tire W rises, and when the green tire gripping device 260 descends, the green tire W
is located at section X10 in FIG.

Since the photoelectric switch PH2 for presence/absence detection is shielded from light, the next hanger 130 comes to the proximity switch PR2 and lifts up by grabbing the green tire W, and the hanger 13
0 comes to proximity switch PR3 and goes down. Through these series of operations, the raw tires W up to X1 are hung on the hanger 130.

Since this invention is as described above, it is possible to lengthen the chain conveyor 240 equipped with the carrier 250 that stores the green tires W in the vertical direction to save space, and as shown in FIG. It can be used as a control panel 350 or other parts conveyance path in the middle of the machine.

Furthermore, when the raw tire W is oriented horizontally, it rides on the U-shaped pipe 244 as shown in FIG. 6, and when it is oriented vertically, it rides on the support plate 246 as shown in FIG. Since the raw tire W is not deformed much and hits the support plate 246 uniformly when the raw tire W is standing as shown in FIG. 7, it is corrected to a uniform position in the width direction (horizontal direction in FIG. 2). .

In addition, by attaching the presser bar 247 to the carrier 250, it is possible to prevent the raw tire W from impact when moving in a pitch.
Since one set of carriers 250 is attached to one set of chain attachments, the chain conveyor 240 can be used at various angles from vertical to horizontal directions.

Furthermore, as shown in FIG. 4, the green tire gripping device 260 has four arms 264 and 266 that operate independently, so there is no connecting rod etc. that links the left and right movements, so the green tire gripping device 260 The passage section is wide and there is no interference.

Note that the direction in which the hanger conveyor device 100 moves can be opposite to that shown in FIG. In this case, the orientation of the hanger 130 is reversed.

In addition to setting, this device can also be used as a device for transferring objects that have flowed on the roller conveyor 210 to the hanger 130. In addition to raw tires W, this device can also transfer product tires and ring-shaped objects to the hanger 130. It is also possible to do so.

〔Effect of the invention〕

This invention consists of a plurality of U-shaped pipes, presser bars, and support plates configured to support at least two surfaces of a green tire on two endless chains that circulate in the vertical direction as described above. a tire gripping device that attaches carriers horizontally at a predetermined interval, and vertically grips the outer peripheral surface of the raw tire being conveyed by the carrier on the top of the two chains with a plurality of expandable and contractible arms; A lifting device for lifting and lowering this tire gripping device is installed, and above the tire gripping device and the lifting device,
An endless hanger conveyor device is installed, which sequentially hooks the green tires held vertically by the tire gripping device onto hangers moving at a constant speed and transports them to the next process, resulting in the following excellent effects: It is something to play.

(a) Improve productivity in the green tire transport process by automatically performing the transfer and rehanging work of green tires without deforming or damaging the green tires. In addition to improving workability, the molded green tires can be efficiently transported as a set to the vulcanization process.

(b). By making the chain conveyor equipped with a carrier longer in the vertical direction, it is possible to save space.

(c) When the green tire is oriented horizontally, it rides on the U-shaped pipe, and when it is vertical, it rides on the support plate, so there is less deformation on the green tire, and when the green tire is standing, it rides on the support plate. As a result, the transfer work can be carried out accurately and efficiently as a result of being constantly corrected and transported in a uniform state in the width direction.

(d) By attaching a presser bar to the carrier,
The raw tires do not fall over even with the impact of pitch movement, and since one set of carriers is attached to one set of chain attachments, the chain conveyor can be used at various angles from vertical to horizontal.

(e) Since the four arms of the tire gripping device are operated independently, there is no connecting rod or the like for movement of the left and right movement, so there is nothing that interferes with the wide area where the raw tire passes.

(f) In addition to setting, this device can also be used to transfer objects that have flowed on a roller conveyor onto a hanger. It is also possible to do so.

[Brief explanation of drawings]

Figures 1 and 2 are front and side views of the hanger conveyor device and setting device, Figure 3 is a perspective view of the carrier attached to the chain with attachments, and Figures 4 and 5 are the green tire gripping device. The front view and side view, and FIGS. 6 and 7 are explanatory diagrams showing a state in which a green tire is placed on a carrier. 100...hanger conveyor device, 130...
Hanger, 200... Setting device, 240...
...Chain conveyor, 241...Chain, 25
0...Carrier, 260...Raw tire gripping device,
280... Lifting device, W... Raw tire, 244...
... U-shaped pipe, 246 ... Support plate, 247
...presser bar, 264...arm.

Claims (1)

[Claims] 1 A plurality of carriers consisting of a U-shaped pipe, a presser bar, and a support plate configured to support at least two sides of a green tire are arranged at predetermined intervals on two endless chains that circulate in the vertical direction. Install it horizontally, and place it on top of the two chains above.
A tire gripping device that vertically grips the outer peripheral surface of a green tire being transported by a carrier with a plurality of expandable and contractible arms, and a lifting device that raises and lowers this tire gripping device are installed, and the tire gripping device and the lifting device are installed. The method is characterized in that an endless hanger conveyor device is provided above, which sequentially hooks the raw tires vertically gripped by the tire gripping device onto hangers moving at a constant speed and conveys them to the next process. A device for setting raw tires.