JP6282953B2 - Raw cover holding device - Google Patents

Description

  The present invention relates to a raw cover holding device used for temporarily storing a raw cover before vulcanization.

  The raw cover before vulcanization is easily deformed, and if it is vulcanized and molded in the deformed state, the product becomes defective. Therefore, an apparatus for preventing the deformation by holding the raw cover on a horizontal shaft has been proposed (for example, Patent Document 1). There has also been proposed an apparatus that holds the raw cover in an upright state to prevent its deformation.

  FIG. 3 is a front view showing a conventional raw cover holding device that holds the raw cover in an upright state. As shown in FIG. 3, the raw cover holding device A1 includes a bottom plate a placed with the raw cover C standing upright and a pair of openable and closable members that sandwich and hold the raw cover C placed on the bottom plate a from both sides. The lower cover C is prevented from being deformed by holding the raw cover C upright with the bottom plate a and the pair of holding arms b.

  Further, the pair of holding arms b are rotatably supported by their respective axes c, and one holding arm b is rotated by the air cylinder e and the other holding arm is connected via the transmission mechanism d. b is also rotated to open and close the pair of holding arms b.

JP 2004-359448 A

  However, in the above-described conventional apparatus, the pair of holding arms is opened and closed by a power source such as an air cylinder, and it is necessary to adjust the opening and closing to change the force for sandwiching the raw cover.

  For example, when the holding force by the holding arm is too strong, the raw cover is crushed and deformed. Conversely, when the holding force is too weak, the raw cover cannot be stably held.

  Although the adjustment of the opening and closing of the holding arm is performed by adjusting the power source, the adjustment work of the power source may cause a decrease in productivity.

  The present invention has been made in view of the above points, and does not require a power source and does not require adjustment work. On the other hand, the low cover holding device can always hold and hold the raw cover with an appropriate force. It is an issue to provide.

The invention described in claim 1
Bucket frame,
A pair of moving frames provided symmetrically;
A pair of shafts provided horizontally to rotatably support the pair of moving frames attached to the bucket frame;
The pair of moving frames includes a pair of bottom portions on which a raw cover is placed, and a pair of holding arms that are provided on both outer sides of the pair of bottom portions and sandwich both sides of the raw cover,
A low cover in which the pair of bottom portions move in the vertical direction and the pair of holding arms move away from each other or approach each other with the rotation of the pair of moving frames around the pair of axes. It is a holding device.

The invention described in claim 2
A forced opening mechanism for opening the pair of holding arms;
The forced opening mechanism is
Elevating means for elevating and lowering the bucket frame;
A push-up body disposed below the pair of moving frames and erected upward;
The bucket frame is lowered by the elevating means, and the push-up body is pressed against the pair of moving frames, whereby the pair of moving frames rotate around the pair of axes, and the pair of bottom portions are directed upward. The low cover holding device according to claim 1, wherein the pair of holding arms moves in a direction away from each other.

The invention according to claim 3
3. The raw cover holding device according to claim 1, wherein respective rollers are attached to positions opposite to each other at upper ends of the pair of holding arms. 4.

  ADVANTAGE OF THE INVENTION According to this invention, while using the power source and the adjustment work is unnecessary, the low cover holding | maintenance apparatus which can always pinch | interpose and hold | maintain a low cover with moderate force can be provided.

It is a front view which shows the raw cover holding | maintenance apparatus which concerns on embodiment of this invention. It is a front view which shows the operation | movement for forcibly opening a pair of holding | maintenance arm of the raw cover holding | maintenance apparatus which concerns on embodiment of this invention. It is a front view which shows the conventional raw cover holding | maintenance apparatus hold | maintained in the state which stood the raw cover.

  Hereinafter, the present invention will be described with reference to the drawings based on embodiments.

1. Basic Configuration of Raw Cover Holding Device FIG. 1 is a front view showing a raw cover holding device according to the present embodiment. (A) is a figure which shows the state which a pair of holding arm opened, (b) is a figure which shows the state where a pair of holding arm closed.

  As shown in FIG. 1, the raw cover holding device A includes a pedestal part 1, a bucket part 2 that holds the raw cover C in an upright state, and an elevating part 4 that raises and lowers the bucket part 2.

  The bucket unit 2 is supported by a lifting unit 4 so as to be movable up and down, a pair of shafts 2b provided horizontally on the bucket frame 2a, and a pair of shafts 2b. And a pair of moving frames 2A provided. The pair of moving frames 2A are provided on the outer sides of the pair of bottom portions 2e on which the raw cover C is placed, the pair of bottom portions 2e, the pair of holding arms 2c sandwiching both sides of the raw cover C, and the pair of moving frames 2A. And a pair of connecting arms 2g to be connected.

  The pair of holding arms 2c are opened and closed by moving in the direction of separating or approaching as the pair of moving frames 2A rotate about the pair of shafts 2b. Each roller 2h is attached to a position where the upper ends of the pair of holding arms 2c face each other.

  The pair of bottom portions 2e is provided on the pair of connecting arms 2g. The pair of bottom portions 2e have a pair of bottom plates 2d so that the peripheral surface of the raw cover C is received by the bent upper surfaces of the pair of bottom plates 2d. As the pair of moving frames 2A rotate about the pair of shafts 2b, the pair of bottom portions 2e and the pair of bottom plates 2d move in the vertical direction. The pair of bottom plates 2d are alternately arranged in the horizontal direction so as not to interfere when approaching each other.

  The pair of connecting arms 2g are connected to each other so that the distal ends of the pair of connecting arms 2g can freely rotate and slide in the horizontal direction, and the rotations of the pair of moving frames 2A are transmitted to each other. Rotate symmetrically.

  The operation of the raw cover holding device according to the present embodiment having the above-described configuration will be described below.

  When the low cover C is not held, as shown in FIG. 1A, the stationary position of the pair of moving frames 2A is maintained by the left and right weight balance of the pair of moving frames 2A around the pair of shafts 2b. The pair of holding arms 2c are opened. At this time, the pair of bottom plates 2d are positioned above, and the pair of connecting arms 2g are arranged in a straight line.

  As shown in FIG. 1B, when the raw cover C is placed on the pair of bottom plates 2d through a pair of opened holding arms 2c, the pair of bottom plates 2d are moved downward by the weight of the raw cover C. Along with this, the pair of moving frames 2A rotate around the pair of shafts 2b, the pair of holding arms 2c move in a direction approaching each other, and the raw cover C is sandwiched between the pair of holding arms 2c. Held. That is, the raw cover C is placed on the pair of bottom plates 2d and held by the pair of holding arms 2c.

  At this time, since the rollers 2h of the pair of holding arms 2c are in contact with both sides of the raw cover C, the surface of the raw cover C is not damaged. Moreover, a pair of connection arm 2g will be in the state bent at the connection location of each other.

  Thus, in the present embodiment, the pair of bottom plates 2d is pushed down by the weight of the raw cover C and the raw cover C is sandwiched and held by the pair of holding arms 2c. Therefore, the raw cover C does not become so large that the raw cover C is greatly deformed.

  Specifically, in the case of a large and heavy raw cover C, the force that pushes down the pair of bottom plates 2d increases, and the holding force by the pair of holding arms 2c increases. On the other hand, in the case of the small and light raw cover C, the force for pushing down the pair of bottom plates 2d becomes small, and the holding force by the pair of holding arms 2c becomes small.

  As described above, in this embodiment, instead of using a power source such as air as in the past, the holding force by the holding arm is automatically and appropriately adjusted according to the weight of the low cover, so that The low cover can always be sandwiched and held with an appropriate force, and the deformation of the low cover C can be sufficiently suppressed.

  The raw cover C is pulled out and lowered. At this time, the pair of moving frames 2A return to their original stationary positions due to the left and right weight balance of the pair of moving frames 2A, so that the pair of bottom plates 2d move upward to return to their original positions, and the pair of holding arms 2c Moves away from each other and opens to return to the original position.

  On the other hand, if the pair of holding arms 2c is not opened even if the raw cover C is pulled upward, the raw cover C cannot be pulled out, and there is a possibility that the raw cover C may be damaged by excessive pulling. In anticipation of such a situation, the raw cover holding device A of the present embodiment is provided with a forcible opening mechanism for forcibly opening the pair of holding arms 2c. This forcible opening mechanism includes an elevating part 4 and a push-up body 2 f erected on the base part 1 toward the bottom part 2 e of the bucket part 2.

  The elevating unit 4 includes a support 1a, a traveling body 1b that is moved in the vertical direction along the support 1a, a motor 3, and a transmission mechanism for transmitting the driving force of the motor 3 to the traveling body 1b. The bucket frame 2a is attached to the traveling body 1b. As the traveling body 1b is moved in the vertical direction by the motor 3, the bucket frame 2a is also moved in the vertical direction.

  As shown in FIG. 2, when the bucket frame 2a moves downward, a receiving member (not shown) provided between the distal ends of the pair of connecting arms 2g is pushed up by the push-up body 2f, The connecting arms 2g are arranged in a straight line, and accordingly, the pair of moving frames 2A rotate around the pair of shafts 2b, and the pair of holding arms 2c move away from each other and open. For this reason, the raw cover C can be pulled out without being damaged.

  The pusher 2f has a built-in spring. When the push-up body 2f hits the receiving member between the end portions of the pair of connecting arms 2g, the push-up body 2f slightly recedes against the spring force, and the impact force on the receiving member is alleviated by the spring. The impact force on the pair of moving frames 2A is also alleviated and the low cover C is protected.

  Thus, according to the forcible opening mechanism, the pair of holding arms 2c can be forcibly opened, which is effective as a countermeasure against the opening failure.

2. Effect of the present embodiment According to the present embodiment, it is not necessary to use a power source (for example, air, electricity) per se when holding the raw cover, so that adjustment of the power source is also unnecessary.

  In addition, by holding the raw cover using its own weight, the raw cover can always be held with an appropriate force.

  While the present invention has been described based on the embodiments, the present invention is not limited to the above embodiments. Various modifications can be made to the above-described embodiments within the same and equivalent scope as the present invention.

1 Pedestal part 1a Post 1b Traveling body 2 Bucket part 2A Moving frame 2a Bucket frame 2b, c Shaft 2c, b Holding arm 2d, a Bottom plate 2e Bottom part 2f Pushing body 2g Connecting arm 2h Roller 3 Motor 4 Lifting part A, A1 Low cover holding Device C Low cover d Transmission mechanism e Air cylinder

Claims (3)

Bucket frame,
A pair of moving frames provided symmetrically;
A pair of shafts provided horizontally to rotatably support the pair of moving frames attached to the bucket frame;
The pair of moving frames includes a pair of bottom portions on which a raw cover is placed, and a pair of holding arms that are provided on both outer sides of the pair of bottom portions and sandwich both sides of the raw cover,
A low cover in which the pair of bottom portions move in the vertical direction and the pair of holding arms move away from each other or approach each other with the rotation of the pair of moving frames around the pair of axes. Holding device. A forced opening mechanism for opening the pair of holding arms;
The forced opening mechanism is
Elevating means for elevating and lowering the bucket frame;
A push-up body disposed below the pair of moving frames and erected upward;
The bucket frame is lowered by the elevating means, and the push-up body is pressed against the pair of moving frames, whereby the pair of moving frames rotate around the pair of axes, and the pair of bottom portions are directed upward. The low cover holding device according to claim 1, wherein the pair of holding arms moves in a direction away from each other.   3. The raw cover holding device according to claim 1, wherein each roller is attached to a position where the upper ends of the pair of holding arms are opposed to each other.

Images