JPH10259855A - Die clamping device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a die clamping device which enables efficient insertion of canvas. SOLUTION: A first frame 11 is laid down by a hydraulic cylinder means 25. A die is moved from a first position where an axis is perpendicularly formed to a second position where an axis is horizontally formed. A second frame 19 is rotated, and the die is moved from the second position to a third position where it is rotated by a specified angle within the horizontal surface. Canvas is inserted in such a state, that is, in the state that the die is directed sideward.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mold clamping device for clamping a cylindrical canvas when inserting a tubular canvas into a mold for forming a power transmission belt.

[0002]

2. Description of the Related Art Conventionally, in a manufacturing process of a power transmission belt,
In some cases, a tubular canvas, which is a so-called reinforcing canvas, is inserted around a cylindrical transmission belt forming mold.

[0003] In such insertion of a canvas, one end of a molding die having both ends supported is released, and the canvas is inserted from the opened end side.

[0004]

However, it is troublesome to release the support at one end of the molding die once supported at both ends, and there is a demand for efficient insertion of canvas. Was.

[0005] In addition, it is conceivable that the canvas is inserted while the mold is placed vertically with the axis being vertical. However, in such a case, the canvas is inserted from above, so that the apparatus becomes large-sized. There is a problem of increasing complexity.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a mold clamping device capable of efficiently inserting a canvas.

[0007]

According to a first aspect of the present invention, in a process of manufacturing a power transmission belt for vertically transporting a power transmission belt molding die, a cylinder is inserted into the power transmission belt molding die during the transportation. A mold clamping device that clamps the mold when a shaped canvas is inserted, comprising a first frame, and a rotatable member with respect to the first frame,
A second frame having a clamp portion that is detachably clamped to the lower end of the mold, first support means for supporting the first frame so that the first frame can be turned upside down, and A second supporting means rotatably supporting the first frame; and a first supporting means which is linked to the first frame and which causes the first frame to fall down so that the axis of the mold is vertical. Second position or axis is horizontal
A first driving means for taking a position, and a second frame which is linked to the second frame, rotates the second frame to rotate the mold from the second position by a predetermined angle in a horizontal plane from the second position. And a second drive means for setting the position of the third drive.

According to the first aspect of the present invention, the clamp portion of the second frame is removably clamp-coupled to the lower end of the mold, and the first frame is caused to fall by the first drive means. The mold has a first axis having a vertical axis.
From the position (1) to the second position where the axis is in the horizontal direction. Then, by rotating the second frame by the second driving means, the mold is further moved from the second position to the third position rotated by a predetermined angle in the horizontal plane. Therefore, the insertion of the canvas is performed in a state where the mold is directed sideways.

According to a second aspect of the present invention, in the apparatus of the first aspect, the mold is placed and transported on a transport base, and the second frame is disposed on an upper side. It has a conveyor means and an elevating means for elevating and lowering the mold placed on the conveyor means together with the transport base.

According to the second aspect of the present invention, the mold is transported while being placed on the transport base, is moved up and down together with the transport base on the second frame, and is transported to the next step by the conveyor means. .

[0011]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a mold used for manufacturing a V-ribbed belt in a manufacturing line for a V-ribbed belt which is a power transmission belt. The mold 1 has a cylindrical shape, and has upper and lower engaging portions 1a and 1b at the top and bottom, and is rotatably mounted on the transport base 4 and transported in a vertically placed state where the axis is vertical. It has become. In the vicinity of the upper and lower ends of the mold 1, there are formed a plurality of air holes 1c,..., 1d, which are inclined so as to discharge air from the inside of the mold toward the center. .

2 (a) and 2 (b)
As shown in FIG. 1, a storage pocket portion 4a for detachably storing the magnetic recording means 5 is provided. Magnetic recording means 5
Is supported in a state of being slightly raised by the support portions 4b and 4c, so that the operator can easily grip it as necessary.

FIGS. 3 and 4 show a mold clamping station, which assists in the process of loading the tubular canvas 3 around the mold 1 on which the release agent has been applied in the previous process. In such a station, the lower end of the mold 1 that is placed on the transport base 4 with the axis line vertically oriented and transported by the transport conveyor means 2 from the previous process,
The mold 1 is clamped together with the transport base 4 and automatically rotated to be turned sideways. Thereafter, the mold 1 is turned at a predetermined angle toward the operator, and the operator inserts the tubular canvas 3.

In FIG. 3 and FIG. 4, reference numeral 11 denotes a first frame, on which an engagement shaft portion 12 removably engaged with the upper engagement portion 1a of the mold 1 is rotatably supported. A driven pulley 13 is fixed to an upper end portion of the engagement shaft portion 12, and a driven pulley 15 rotatively driven by a driven motor 14 fixed to the first frame 11 is attached to the driven pulley 13.
Are linked via a transmission belt 16 (see FIG. 8).

At the lower end of the first frame 11,
A second frame 19 is provided, and the second frame 19 is provided.
Further, there is provided a clamp portion 18a which detachably engages with the lower engaging portion 1b of the mold 1 and clamps the lower engaging portion 1b. In addition, the clamp part 18a is a cylinder means 1
8 (air chuck), which is a mechanism that can hold the mold 1 in a cantilever manner.

Further, the second frame 19 is a canvas insertion stage provided with roller conveyor means 17 on the upper side, and the mold 1 is moved together with the transport base 4 by the roller conveyor means 17 in the next cord winding step. It can be transported to Further, on the second frame 19 (cloth insertion stage), the mold 1 is supported by the cylinder means 18 together with the transport base 4 so as to be able to move up and down as described later.

Further, the second frame 19 has a connecting portion 19a projecting toward the conveyor means 2, and one end of a rotary arm 24 is integrally provided on the connecting portion 19a via a connecting shaft 23. The connecting portion 19a and the rotating arm 24 maintain a fixed positional relationship. The other end of the rotary arm 24 is rotatably connected to the tip of a piston rod 25a of a hydraulic cylinder means 25 for raising and lowering as a driving means.
5b is supported on the base frame 21. Then, the first frame 11 is moved to a first position P11 (see FIG. 3) where the axis of the mold 1 is set in a vertical direction by the extension operation and the contraction operation of the hydraulic cylinder
A second position P12 with the axis of the horizontal direction (see FIG. 4)
It is designed to rotate between and. Incidentally, reference numeral 26 denotes a stopper which regulates the stopper to the second position P12.

The above-mentioned mold clamping station is used to check whether or not the mold recorded in the magnetic recording means 5 and the conveyed mold coincide with each other.
A length measuring device 31 for measuring the outer peripheral length of the mold 1 is provided. As shown in detail in FIG.
The outer peripheral surface of the mold 1 is brought into contact with the outer peripheral surface of the disk-shaped length measuring roll 32 to measure the outer peripheral length of the mold 1. The length measuring roll 32 is integrally connected to a flange portion 33a of a roller shaft 33 rotatably supported by a housing 37,
The rotary shaft 33 is connected to an encoder 34. The housing 37 is connected to a tip of a piston rod 35 a of the cylinder 35. It should be noted that the length measuring roll 32 does not interfere with the up and down movement of the mold 1 when it is at the stroke origin, and the length measuring device 31 is not specifically shown. Is fixed to the base frame 21 on the next step (for example, a cord winding step) side.

FIG. 6 shows a canvas insertion jig which expands in accordance with the size of the mold 1 in order to easily insert the canvas 3 into the mold 1. As shown in FIG. 7, the canvas 3 inserted into the mold by the insertion jig is formed in a tubular shape and has an adhesive rubber on the outer peripheral side.

The insertion jig 41 has a plurality of leaf spring members 42,... (For example, ribbon steel) regularly arranged in a circumferential direction, and has a fixed portion 41A whose radius does not change, and a fixing portion 41A. And an expanding portion 41B whose radius gradually increases from the side of the portion 41A and can be deformed into a trumpet shape. Flange members 43, 43 are provided in the fixed portion 41A and at both ends, and a rod member 45 is slidably fitted into a tubular member 44 provided at a substantially central position between the flange members 43, 43. ing. One end of the rod member 45 is connected to each leaf spring member 42,.
Is connected to a substantially intermediate position in the expansion portion 41B, and the distal end of the expansion portion 41B expands or contracts by sliding movement of the rod member 45.

In particular, the use of the insertion jig 41 is particularly effective when the ordinary canvas having no elasticity is used, since it becomes difficult to insert the canvas 3 into the mold 1.

The jig 41 has a lock lever 47.
Is provided so that the lock in an arbitrary state can be performed with one touch, and when the lock is released, the lock is closed to the minimum diameter by a tensile force of a spring or the like. Also,
The mold is provided with air supply holes 1c and 1d (see FIG. 1), and an air curtain is formed between the canvas 3 and the mold.
The insertion of the canvas 3 is facilitated. The air curtain is also effective in facilitating the removal of the insertion jig 41 from the mold 1.

Subsequently, using the above mold clamping device,
The procedure for inserting the canvas 3 into the mold 1 will be described with reference to FIGS. 8 to 19 show the drive motor 1
5 shows an example in which 5 is provided on the protruding portion 11b side.

First, as shown in FIG. 8, a mold 1 on which a release agent has been applied in advance and a transfer base 4 on which the mold has been placed are transported by a second frame via a transfer conveyor means 2 from a previous step. 19 (canvas insertion stage) and the mold 1 is positioned. That is, a sensor (not shown) detects the transport base 4 and stops the operation of the transport conveyor means 2.

Thereafter, as shown in FIG. 9, the cylinder means 18 is extended to engage the clamp portion 18a with the lower engaging portion 1b of the mold 1, and the cylinder means 18 is further extended. The mold 1 is lifted by a predetermined amount together with its transport base 4. At this time, since the engagement shaft portion 12 is being rotated, the engagement shaft portion 12 is engaged with the upper engagement portion 1a of the mold 1 and clamped. The relative positional relationship between the mold 1 and the engagement shaft portion 12 is determined by the positioning pin 12a.

After the clamp connection is completed, as shown in FIG. 10, the mold 1 is lowered in the transport direction by an angle corresponding to approximately 90 °. This lodging is performed on the conveyor means on the next process side.

First, for the purpose of reliably avoiding mistakes in inserting the mold 1 and mistakes in inserting the canvas 3, etc., in the lying state, as shown in FIG. 32 is brought into contact with the mold 1, the mold 1 is rotated substantially one turn, the length of the outer circumference of the mold 1 is measured, and the mold 1 recorded in the magnetic recording means 5 is automatically Check if it matches the mold being conveyed.

After the length measurement is completed, as shown in FIG. 12, the length measurement roll 32 is retracted, and the clamp connection between the engagement shaft portion 12 and the upper engagement portion 1a of the mold is released accordingly. At this time, the lower engaging portion 1b of the mold 1 is chucked by the clamp portion 18a, and the mold 1 is securely held in a cantilever state during the subsequent rotation of the mold 1 to insertion of canvas and return to rotation. Can be held.

Then, as shown in FIG. 13, the mold 1 is turned by approximately 40 ° toward the worker so that the worker can easily insert the canvas 3. At this time, the engagement shaft portion 12 has retreated to a position where it does not interfere with the mold.
When the mold is turned, an interlock is obtained with the forward / backward movement signal of the insertion jig 41, so that the mold 1 can be turned only when the insertion jig 41 is at the retracted position.
In addition, when not used, the insertion jig 41 stands by at a position turned about 50 ° toward the release agent application side in order to secure a walking space for the worker. The turning of the insertion jig 41 is performed manually, and the positioning at the standby position and the insertion position is performed by positioning means (for example, a permanent magnet) not shown. The frame, the hydraulic cylinder means, and the like are all provided inside the transfer line (opposite to the work position) so as not to hinder the work of the worker.

After the turning is completed, in this state, the canvas 3 is inserted into the mold 1 using the insertion jig 41 as described later (see FIG. 14).

After inserting the canvas, as shown in FIG.
Is returned to the original position, and as shown in FIG. 16, the engagement with the engagement shaft portion 12 is performed again, the mold 1 is rotated once, and the end face of the canvas is aligned.

As described above, a series of automatic operations up to the positioning of the die on the second frame 19, the falling of the die, the length measurement, and the turning of the die are performed, and the die standing after the canvas is inserted (see FIG. 17). The positioning on the conveyor means (see FIG. 18) and the transport to the cord winding step (see FIG. 19) are started by the operator pressing a mold discharge switch (not shown) after the canvas insertion operation is completed. It has become. The turning of the mold 1 after the insertion is completed and the rotation of the mold 1 for positioning the transfer end surface are manually operated by a push button switch or the like. Next, a method of inserting the canvas 3 using the insertion jig 41 will be described in detail with reference to FIG. 7 and FIGS.

First, although not specifically shown, the rod member 45 is sufficiently pulled out of the leaf spring member 42, and as shown in FIG. The canvas 3 is inserted from the side where
Move to the side.

Then, as shown in FIG. 20, the expansion member 41B is expanded into a trumpet shape by pushing the rod member 45 into the leaf spring member 42, and in this state, the entire insertion jig 41 is advanced to form the mold 1 To engage.

Thereafter, the rod member 45 is pulled out, and FIG.
As shown in FIG. 1, the radius is reduced so that the leaf spring member 42 follows the outer peripheral surface of the mold 1. In this state, the canvas 3 is inserted into the mold 1 while sliding on the leaf spring member 42 as shown in FIGS. Since the insertion is performed while sliding on the leaf spring member 42, the insertion can be performed without extending the canvas 3 more than necessary.

After the completion of the insertion, the entire insertion jig 41 is retracted, and is removed from the mold 1. At this time, since the sliding with the canvas 3 is good, the canvas 3 does not move with respect to the mold 1 and only the insertion jig 41 is pulled out.

Thereafter, the synthetic resin film 49 attached to the canvas 3 is peeled off while rotating the mold 1 as shown in FIG. The reason why the synthetic resin film 49 is attached to the canvas 3 is to allow the cylindrical canvas to be inserted without being stretched.

Accordingly, the canvas 1 can be inserted without directly touching the mold 1 without extending the end of the canvas 3.

[0040]

According to the first aspect of the present invention, as described above, the first
The first frame is moved down from the first position, in which the axis is vertical, to the second position, in which the axis is horizontal, and the second driving is performed. Means for rotating the second frame,
A third angle rotated a predetermined angle in a horizontal plane from the second position;
, And the canvas is inserted while the mold is directed sideways, so that the canvas can be easily inserted into the mold.

According to the second aspect of the present invention, the mold is transported while being mounted on the transport base, and is moved up and down together with the transport base on the second frame by the lifting / lowering means. It can be transported integrally with the base.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a transmission belt manufacturing system using a mold clamping device according to the present invention.

FIG. 2 is a sectional view showing a schematic configuration of a mold according to the present invention. 1A and 1B show a transport base according to the present invention, wherein FIG. 1A is a partial plan view, and FIG.

FIG. 4 is a schematic configuration diagram of a mold clamping station using the mold clamping device according to the present invention, showing a state where the axis of the mold is at a first position which is a vertical direction.

FIG. 5 is a schematic configuration diagram of the same station, showing a state where the axis of the mold is at a second position in the horizontal direction.

FIG. 6 is a schematic sectional view of a length measuring device.

FIG. 7 is a schematic configuration diagram of a canvas insertion jig.

8 (a) is a plan view, and FIG. 8 (b) is a front view.

9A and 9B are explanatory diagrams of the operation, in which FIG. 9A is a plan view and FIG. 9B is a front view.

10A and 10B are explanatory diagrams of the operation, in which FIG. 10A is a plan view and FIG. 10B is a front view.

11 (a) is a plan view, and FIG. 11 (b) is a front view.

12 (a) is a plan view, and FIG. 12 (b) is a front view.

13A and 13B are explanatory diagrams of the operation, in which FIG. 13A is a plan view and FIG. 13B is a front view.

14 (a) is a plan view, and FIG. 14 (b) is a front view.

15 (a) is a plan view, and FIG. 15 (b) is a front view.

16 (a) is a plan view, and FIG. 16 (b) is a front view.

17 (a) is a plan view, and FIG. 17 (b) is a front view.

18 (a) is a plan view, and FIG. 18 (b) is a front view.

19A and 19B are explanatory diagrams of the operation, in which FIG. 19A is a plan view and FIG. 19B is a front view.

FIG. 20 is an explanatory diagram of a canvas insertion operation.

FIG. 21 is an explanatory diagram of a canvas insertion operation.

FIG. 22 is an explanatory diagram of a canvas insertion operation.

FIG. 23 is an explanatory diagram of a canvas insertion operation.

FIG. 24 is an explanatory diagram of a canvas insertion operation.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Die 1a Upper engaging part 1b Lower engaging part 2 Conveyor means 4 Conveying base 11 First frame 12 Engaging shaft part 13 Clamp part 17 Roller conveyor means 18 Cylinder means 19 Second frame 25 Hydraulic cylinder means 41 canvas insertion jig

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[Procedure amendment]

[Submission date] May 16, 1997

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Brief description of drawings

[Correction method] Change

[Correction contents]

[Brief description of the drawings]

FIG. 1 shows a V-ribbed belt production line according to the present invention.
FIG. 2 is a longitudinal sectional view of a mold used in the first embodiment .

2A and 2B show a transport base according to the present invention, wherein FIG. 2A is a partial plan view, and FIG. 2B is a partial front view.

FIG. 3 is a schematic configuration diagram of a mold clamping station using the mold clamping device according to the present invention, showing a state where the axis of the mold is at a first position which is a vertical direction.

FIG. 4 is a schematic configuration diagram of the same station, showing a state where the axis of the mold is at a second position in the horizontal direction.

FIG. 5 is a schematic sectional view of a length measuring device.

FIG. 6 is a schematic configuration diagram of a canvas insertion jig.

FIG. 7 is a diagram showing a relationship between a canvas insertion jig and a canvas.

8 (a) is a plan view, and FIG. 8 (b) is a front view.

9A and 9B are explanatory diagrams of the operation, in which FIG. 9A is a plan view and FIG. 9B is a front view.

10A and 10B are explanatory diagrams of the operation, in which FIG. 10A is a plan view and FIG. 10B is a front view.

11 (a) is a plan view, and FIG. 11 (b) is a front view.

12 (a) is a plan view, and FIG. 12 (b) is a front view.

13A and 13B are explanatory diagrams of the operation, in which FIG. 13A is a plan view and FIG. 13B is a front view.

14 (a) is a plan view, and FIG. 14 (b) is a front view.

15 (a) is a plan view, and FIG. 15 (b) is a front view.

16 (a) is a plan view, and FIG. 16 (b) is a front view.

17 (a) is a plan view, and FIG. 17 (b) is a front view.

18 (a) is a plan view, and FIG. 18 (b) is a front view.

19A and 19B are explanatory diagrams of the operation, in which FIG. 19A is a plan view and FIG. 19B is a front view.

FIG. 20 is an explanatory diagram of a canvas insertion operation.

FIG. 21 is an explanatory diagram of a canvas insertion operation.

FIG. 22 is an explanatory diagram of a canvas insertion operation.

FIG. 23 is an explanatory diagram of a canvas insertion operation.

FIG. 24 is an explanatory diagram of a canvas insertion operation.

DESCRIPTION OF SYMBOLS 1 Mold 1a Upper engaging part 1b Lower engaging part 2 Conveyor means 4 Conveyor base 11 First frame 12 Engaging shaft part 13 Clamp part 17 Roller conveyor means 18 Cylinder means 19 Second Frame 25 Hydraulic cylinder means for raising and lowering 41 Canvas insertion jig

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Noboru Yoshishima 3-2-1-15 Meiwadori, Hyogo-ku, Kobe-shi, Hyogo BANDO CHEMICAL CO., LTD. 3-2-1-15 Bando Chemical Co., Ltd. (72) Inventor Masahide Naya 3-2-1-15 Meiwadori, Hyogo-ku, Kobe City, Hyogo Prefecture BANDO Chemical Co., Ltd. (72) Inventor Naohisa Harushige Hyogo Prefecture Hyogo Kobe City 3-2-1-15 Meiwadori-ku, Bando Chemical Co., Ltd. (72) Inventor Shoichi Nagai 3-2-1-15 Meiwadori, Hyogo-ku, Kobe-shi, Hyogo Bundo Chemical Co., Ltd.

Claims (2)

[Claims] In a manufacturing process of a power transmission belt for transporting a power transmission belt in a vertical state, when a tubular canvas is inserted into the power transmission belt in the process of transporting the metal belt, the metal belt is inserted into the power transmission belt. A mold clamping device for clamping a mold, comprising: a first frame; and a clamp portion rotatably provided with respect to the first frame, the clamp portion being removably clamped to a lower end portion of the mold. A second frame, first support means for supporting the first frame so that the first frame can be turned upside down, second support means for supporting the second frame rotatably with respect to the first frame, The first frame is linked to the first frame, and the first frame is caused to fall down so that the axis of the mold is vertical.
A first driving means for setting a second position in which the position or the axis is in the horizontal direction; and a second frame, which is linked to the second frame, rotates the second frame to move the second frame to the mold. And a second driving means for setting a third position rotated by a predetermined angle in a horizontal plane from the position. 2. The mold is mounted on a transfer base and transferred, and the second frame is mounted on a conveyor means disposed on an upper side and on the conveyor means. 2. The mold clamping device according to claim 1, further comprising a lifting means for raising and lowering the mold together with a transport base.