JPH0613169Y2 - Conveying device for sheet - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention, when performing various types of processing and treatment on a long strip-shaped sheet-like body, sends the sheet-like body to a processing / treatment device and transfers it. The present invention relates to a sheet-shaped material conveying device for sending out.

[Conventional technology]

In this type of sheet-shaped material conveying apparatus, since the sheet-shaped material is subjected to heat treatment, press working, resin molding, etc. while continuously or intermittently conveying the sheet-shaped material, It is necessary to have a mechanism for reliably gripping both side ends of the sheet-like body and smoothly releasing it at the end position. Such an apparatus is conventionally disclosed, for example, in Japanese Utility Model Publication No. 63-20664.

This device uses a double roller chain in which plate link chains are arranged in upper and lower two rows, and a sheet picking member is projected at equal intervals on the lower or upper roller chain, and the roller of the other roller chain is also used. A guide rail is arranged along the inside and outside of the roller row using the row as a guide member, and the guide rail supports the double roller chain in a state in which the roller row is rotatably sandwiched between the inside and the outside of the roller row. A pair of revolving chains composed of such double roller chains is arranged parallel to both sides of the sheet transfer path so as to be revolvable in a horizontal plane. Further, the sheet sandwiching member is one of the roller chains,
Support pieces project outward from a pair of upper and lower link plates that sandwich the roller, a support shaft is provided slidably through both support pieces, and a pressing piece projects outward from the support shaft. However, a coil spring for urging the pressing piece toward one of the upper and lower support pieces is provided. Then, at the turning positions of both ends of the circling chain, the pressing piece of the sheet sandwiching member is pressed in the axial direction against the spring force of the coil spring to open between the pressing piece and the supporting piece, and By closing between the pressing piece and the supporting piece by the restoring force,
A cam is provided for pressing and releasing the seat.

[Problems to be solved by the device]

In the above-mentioned conveying device disclosed in Japanese Utility Model Publication No. 63-20664, the sheet is securely held by the sheet picking member and transferred, and the sheet is released from the sheet picking member at the end position, and the operation is repeated. Enables the sheet to be smoothly conveyed, the revolving chain to smoothly revolve, and even when the sheet contracts, a large pulling force acts on the sheet picking member. One of the roller rows of the double roller chain serves as a guide member, and the inner and outer guide rails guide the orbiting chain straightly, so that the sheet can always be conveyed straight. is doing.

However, in the conveying device described in the same publication, in order to support the revolving chain, the roller row of the upper or lower roller chain is sandwiched by the guide rails from the inner side and the outer side to the inner and outer guide rails. It is designed to be engaged and suspended. In this way, the revolving chain is suspended and supported by the inner and outer guide rails, and the rollers of the roller chain roll on the guide surfaces of the guide rails under their own weight, so an unreasonable force is applied to the roller chain. However, there is a problem in that the life of the guide surface is shortened and the degree of wear of the guide surface is relatively large. Further, since it is necessary to accurately form the guide surface of the guide rail in an uneven shape corresponding to the shape of the roller chain composed of a pair of upper and lower link plates and rollers sandwiched between the link plates, it is difficult to process the guide surface. There is also a problem in that the structure becomes a little complicated and assembly and maintenance work of the device becomes troublesome.

The present invention has been made to solve the above-mentioned problems, and does not apply excessive force to the roller chain, and the degree of wear of the guide surface of the guide rail is relatively small. It is a technical object to provide a sheet-shaped member transporting device whose surface can be easily processed and whose structure is relatively simple.

[Means for Solving the Problems]

In this invention, as a means for achieving the above-mentioned object, a sheet-shaped member conveying device is configured as follows. That is, the conveying device according to the present invention is provided with a pair of conveying chains which are hung on a pair of sprockets and guided by guide rails to move in a horizontal plane in parallel to both sides of a sheet conveying path. , The side end portion of the sheet-shaped body is clamped by the action of the first cam mechanism at one end side of each of the transport chains, and the side end portion of the sheet-shaped body is moved from one end side to the other end side while being pinched. In the sheet-shaped member conveying device, in which a plurality of holding means for opening the side end portion of the sheet-shaped body by the action of the second cam mechanism at the other end side are respectively attached at equal intervals, the holding means is provided. The roller shafts of the link units constituting the transport chain are extended vertically upward so as to protrude from the upper surface of the link plate, and auxiliary rollers are pivotally attached to the respective extension shaft portions, and the link unit is The upper and lower link plate and extending outwardly of and horizontally supporting plate portions respectively Katachi設, slidably mounted to the operating shaft through them both supporting plate portion in the vertical direction,
An elastic means for fixing a pressing piece to the upper end portion of the operating shaft projecting to the upper surface side of the upper support plate portion, and urging the operating shaft downward to press the pressing piece against the upper surface of the upper support plate portion. Further, a lower link plate of a link unit different from or common to the link unit in which the pressing piece is arranged is extended vertically downward to form a holding plate portion, and the holding plate portion is formed. In addition, a guide roller that rotates around a horizontal axis is mounted on the shaft. Further, the guide rail includes an inner / outer vertical guide surface for rolling the auxiliary roller by sandwiching the auxiliary roller of the holding means from inside and outside,
A horizontal guide surface for supporting the guide roller of the holding means and rolling the guide roller.

[Action]

In the sheet-shaped carrier having the above-described structure, the lower end surface of the operating shaft of the holding means attached to the carrier chain is the first in accordance with the turning operation of the carrier chain on one end side of the carrier path.
When an upward force is applied from the cam surface of the cam mechanism, the pressing piece fixed to the upper end of the actuating shaft moves upward against the elastic force of the elastic means, and the pressing piece and the upper support plate upper surface And the side end portion of the sheet-like body is arranged between them, the holding piece moves downward due to the restoring force of the elastic means, and the sheet-like body is provided between the holding piece and the upper surface of the upper support plate portion. The side edge of the is securely held. Then, by moving the transport chain while holding the side end portion of the sheet-shaped body by the holding means, the sheet-shaped body is transferred from one end side to the other end side, and when the transport chain is reversed at the other end side, Similarly to the above, the lower end surface of the actuating shaft of the holding means receives an upward force from the cam surface of the second cam mechanism, and the pressing piece moves upward against the elastic force of the elastic means, and the pressing piece and the upper side. When the space between the upper surface of the support plate and the upper surface of the upper plate is opened, the side end of the sheet-like body is opened. To do. By repeating the above operation, the sheet-like body is conveyed.

Further, when the transport chain moves from one end side to the other end side, the transport chain has a guide roller that is pivotally mounted on a holding plate portion vertically installed on the lower link plate of the link unit of the transport chain. While rolling on the horizontal guide surface of the guide unit, the auxiliary rollers protruding to the upper surface side of the upper link plate of the link unit are located inside and outside the vertical guide surface inside and outside the guide rail. It is guided as desired by rolling on both vertical guide surfaces in a state of being sandwiched between the two. In this way, since the conveyor chain moves while being placed on the horizontal guide surface of the guide rail, no vertical load is applied to the auxiliary roller and the inner / outer vertical guide surfaces of the guide rail. Unnecessary force is not applied to the conveyor chain as much as when the chain is moved in a suspended state, and the inner and outer vertical guide surfaces of the guide rails are relatively less worn. The inner and outer vertical guide surfaces of the guide rail may be formed in a flat shape so as to abut the cylindrical surface of the auxiliary roller, so that the machining is easy and the structure is relatively simple.

〔Example〕

Hereinafter, a preferred embodiment of the present invention will be described with reference to the drawings.

FIG. 2 is an overall plan view of a processing apparatus equipped with a sheet conveying apparatus according to the present invention. In the figure, 2 is a heating device and 4 is a molding press. A long strip-shaped sheet, for example, a resin sheet, is conveyed from the right side to the left side in the drawing as indicated by the arrow, is heated by the heating device 2 during that time, and is pressed by the molding press machine 4.

The conveying device is configured by disposing a pair of conveying chains 10 and 10 'in parallel on both sides of a sheet-like conveying path. The transport chains 10, 10 'include a pair of sprockets 12, 14, 12', 14 ', guide rolls 16, 16', 18, 18 'and tension rolls 20, 2 respectively arranged at both ends of the transport path.
The sprocket 14, 14 'is hung around 0', and is rotated by a rotation drive mechanism (not shown), so that the sprocket 14, 14 'is rotated in the horizontal plane.

As shown in a partially enlarged plan view of FIG. 3, the transport chain 10 holds the side end portion of the sheet-like body S, and the transport chain 10
A large number of holding means 22 for transferring the sheet-like body S in accordance with the orbiting movement are attached at equal intervals. This means of holding
As shown in FIGS. 1 and 3 to 5, reference numeral 22 denotes an extension shaft formed by extending each roller shaft 24 of the link unit constituting the transport chain 10 vertically upward and projecting from the upper surface of the link plate 26. It has an auxiliary roller 30 pivotally mounted on the part 28. Also,
Support plate parts 36, 38 by extending the upper and lower link plates 32, 34 of the link unit horizontally and outwardly, respectively.
Is formed. A slide bearing 40 is attached to both of the support plate portions 36 and 38, and an operating shaft 42 is slidably fitted in the slide bearing 40 in the vertical direction. Working axis
A pressing piece 44 is fixed to the upper end portion of the upper support plate portion 36 protruding to the upper surface side of the upper support plate portion 36. A holding plate 46 is fixed to the lower end of the operating shaft 42, and a coil spring 48 wound around the operating shaft 42 is provided between the holding plate 46 and the lower support plate portion 38.
Has been inserted. This coil spring 48 allows
42 is always urged downward via a holding plate 46, and the pressing piece 44 is pressed against the upper surface of the upper support plate portion 36. Further, in this embodiment, a holding plate portion 52 is formed by vertically extending a lower link plate 50 of a link unit different from the link unit in which the pressing piece 44 is arranged, and the holding plate portion 52 is formed.
A guide roller 54 that rotates around a horizontal axis is attached to the shaft 52.

FIG. 4 is a vertical cross-sectional view showing an engaged state between the sprocket 14 disposed at the turning position of the transport chain on the transport path and the transport chain. The sprocket 14 has 5 teeth on the upper and lower two stages.
The rotary shaft 60 is connected to a drive motor (not shown) via a power transmission mechanism (not shown), and the sprocket is driven by driving the drive motor.
14 is rotated. Upper and lower teeth 56, 58 of sprocket 14
Is the auxiliary roller 30 of the transport chain and the upper and lower link plates 3
The rollers 62 sandwiched by the rollers 2 and 34 are brought into meshing contact with each other, and the rotational force of the sprocket 14 is transmitted to the transport chain to orbit the transport chain. Below the teeth 56 of the sprocket 14, a guide base 66 having a guide surface 64 having a semicircular planar shape formed on the upper surface is arranged, and the guide roller 54 rolls on the guide surface 64. It is supposed to do. Also, the guide base
In the outer peripheral direction of 66, a cam 70 having a cam surface 68, which has an arc-shaped planar shape, and which has a gentle inclined surface that inclines upward once and then inclines downward, is provided. At the turning position of the transport chain on the other side of the transport path, the same sprocket 12 as well as a guide base having a guide surface and a cam having a gently inclined cam surface are provided.

FIG. 5 shows guide rails 72 arranged on both sides of the conveying path for guiding and moving the conveying chain from one end side to the other end side.
FIG. 6 is a vertical cross-sectional view showing an engagement state between a carrier chain and a conveyor chain. As shown in the figure, the guide rail 72 supports the guide rollers 54 and the inner and outer vertical guide surfaces 74 and 76 that slide the auxiliary rollers 30 of the transport chain from inside and outside to roll the auxiliary rollers 30. And a horizontal guide surface 78 for rolling the guide roller 54. The horizontal guide surface 78 is formed on the same horizontal plane as the guide surface 64 of the guide base 66 described above, and is connected to the guide surface 64.

Next, the operation of this carrying device will be described. First, on one end side of the transport path, the lower end surface of the operating shaft 42 of the holding means 22 attached to the transport chain 10 rides on the cam surface 68 of the cam 70 as shown on the right side of FIG. Then, as the sprocket 12 rotates, the carrier chain 10
When is rotated, the lower end surface of the operating shaft 42 receives an upward force from the cam surface 68 of the cam 70 according to the operation, and the pressing piece 44 fixed to the upper end of the operating shaft 42 resists the elastic force of the coil spring 48. And move up. As a result, as shown on the left side of FIG. 4, the space between the pressing piece 44 and the upper surface of the upper support plate portion 36 is opened, and the side end portion of the sheet S is arranged therebetween. After that, the lower end surface of the operating shaft 42 cams as the transport chain 10 orbits.
The pressing piece is slid on the cam surface 68 of the 70 and is gently inclined downwards by the restoring force of the coil spring 48 corresponding to the cam surface 68.
The lower side of the sheet-like body S is clamped between the pressing piece 44 and the upper supporting plate portion 36 by pressing the pressing piece 44 against the upper surface of the upper supporting plate portion 36 by the downward movement of the pressing piece 44.

In this way, the carrier chain 10 is guided and moved by the guide rails 72 with the holding means 22 holding the side end portion of the sheet-like body S, so that the sheet-like body S is moved from one end side to the other end side. Be transferred. At this time, the transport chain 10 moves while being supported on the horizontal guide surface 78 of the guide rail 72 by the guide roller 54 rolling on the horizontal guide surface 78 of the guide rail 72. Therefore, the vertical load is not applied to the inner and outer vertical guide surfaces 74 and 76 of the auxiliary roller 30 and the guide rail 72. Further, during the circular movement, the auxiliary roller 30 of the transport chain 10 rolls on both the vertical guide surfaces 74, 76 of the guide rail 72 while being sandwiched between the vertical guide surfaces 74, 76 on both sides. The transport chain 10 is guided straight and moves.

Then, at the other end side of the transport path, when the transport chain 10 is reversed, the operating shaft 42 of the holding means 22 is operated in the same manner as above.
The lower end surface of the pressing member receives an upward force from the surface of the cam 68 of the cam 70, and the pressing piece 44 moves upward against the elastic force of the coil spring 48.
By opening between 44 and the upper surface of the upper support plate portion 36, the side end portion of the sheet S is opened. After that, the pressing piece 44 moves downward again by the restoring force of the coil spring 48, and the pressing piece 44 and the upper surface of the upper support plate portion 36 are in pressure contact with each other. By repeating the above operation, the sheet S is conveyed.

[Effect of device]

Since the present invention is constructed and operates as described above, the sheet conveying apparatus according to the present invention does not exert an excessive force on the conveying roller, and therefore the life of the conveying apparatus is practical. Since it is longer than the conveying device described in Japanese Patent Laid-Open No. 63-20664, and the degree of wear of the guide surface of the guide rail is relatively small, it is possible to reduce the time and labor required for repairing the guide rail. Also,
In this transfer device, the guide surface of the guide rail can be easily processed, and the device can be easily assembled and maintained.

[Brief description of drawings]

FIG. 1 is a partially enlarged perspective view showing a main portion of a sheet-shaped member conveying device according to an embodiment of the present invention, and FIG.
An overall plan view showing an example of a processing apparatus equipped with this carrying device, FIG. 3 is a partially enlarged plan view showing a carrying chain of this carrying device, and FIG. 4 is a sprocket and carrying chain of this carrying device. 5 is a longitudinal sectional view showing the engaged state of FIG.
It is a longitudinal cross-sectional view showing an engaged state of a guide rail and a transport chain of this transport device. 10, 10 '... Transport chain, 12, 14, 12', 14 '... Sprocket, 22 ... Holding means, 24 ... Roller shaft, 26 ... Link plate, 28 ... Extension shaft part, 30 ... Auxiliary rollers, 32, 34 …… Upper / lower link plates, 36, 38 …… Upper / lower support plate parts, 42 …… Operating shafts, 44 …… Pressing pieces, 48 …… Coil springs, 50 …… Lower side links Plate, 52 ... Holding plate, 54 ... Guide roller, 68 ... Cam surface, 70 ... Cam, 72 ... Guide rail, 74, 76 ... Inner / outer vertical guide surface, 78 ... Horizontal guide surface , S ... Sheet-like body.

Claims (1)

[Scope of utility model registration request] 1. A pair of transport chains are provided parallel to both sides of a sheet-shaped transport path, which are respectively wound around a pair of sprockets, guided by guide rails, and circularly moved in a horizontal plane. At one end side, the side end portion of the sheet-shaped body is clamped by the action of the first cam mechanism, and the side end portion of the sheet-shaped body is clamped and moved from the one end side to the other end side. In a sheet-shaped member conveying device, in which a plurality of holding means for opening the side end portions of the sheet-shaped member are attached at equal intervals by the action of the second cam mechanism, the link unit of the conveying chain is Each roller shaft is extended vertically upward so that it protrudes from the upper surface of the link plate, and auxiliary rollers are pivotally attached to the respective extension shaft parts, and the upper and lower link plates of the link unit are directed horizontally and outward. Extending and forming support plate parts respectively, penetrating both support plate parts and mounting the operating shaft slidably in the vertical direction, at the upper end part of the operating shaft projecting to the upper surface side of the upper supporting plate part. An elastic means is provided to fix the pressing piece, and urge the operating shaft downward to press the pressing piece against the upper surface of the upper support plate portion. Furthermore, the link unit provided with the pressing piece is Another or a common lower link unit lower link plate of the link unit is extended vertically downward to form a holding plate portion, and by mounting a guide roller rotating around a horizontal axis on the holding plate portion, The nipping means is configured, and the guide rail supports the inner / outer vertical guide surfaces for rolling the auxiliary rollers of the nipping means from inside and outside and rolling the auxiliary rollers, and the guide rollers of the nipping means. Horizontal to roll its guide roller An inner surface is formed, and the lower end surface of the actuating shaft of the sandwiching means receives the above-mentioned upward force from the cam surface of each cam mechanism against the elastic force of the elastic means at both end positions of the conveying path. After the pressing piece moves upward and is once separated from the upper surface of the upper support plate portion, the pressing piece is moved downward by the restoring force of the elastic means and comes into pressure contact with the upper surface of the upper support plate portion again. A conveying device for a sheet-shaped body, wherein a side end portion of the sheet-shaped body is clamped and opened.