JPH045278Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention is directed to a synthetic resin sheet joining device used for a synthetic resin house for greenhouse cultivation, in which an edge portion cut from an original sheet is fed out. Regarding equipment.

(Prior Art) Vinyl sheets used in greenhouses are made wide by joining the ends of a plurality of vinyl sheets each having a predetermined width. In an apparatus for manufacturing such vinyl sheets, a plurality of vinyl sheets are continuously unwound from a roll-shaped raw material, and the ends of the vinyl sheets are overlapped, for example, and then connected to heating electrodes. It passes through a heat welding section equipped with rollers. Then, the overlapping portions of the ends are thermally welded by being pressed by an electrode roller.

However, in the case of roll-shaped raw material, the edges of the vinyl sheet are usually uneven, and when the vinyl sheet is unwound from such a raw material, the ends are unwound adjacent to each other. When overlapping the ends of vinyl sheets, it is difficult to make the width of the overlapping portion uniform in the longitudinal direction. Therefore, when an overlapping portion with uneven width is pressed against and heated by an electrode roller, the overlapping portion meandering relative to the electrode roller as the vinyl sheet is fed out.
It becomes impossible to reliably heat weld the overlapping portions.

Therefore, in order to properly overlap or oppose the ends of adjacent vinyl sheets, a process is carried out in which the ends of the vinyl sheets are cut parallel to the direction of unwinding when the vinyl sheets are unrolled from the original roll. The ears generated by the cutting are, for example, fed out to the opposite side of the splicing machine body and accommodated as appropriate.

(Problems to be solved by the invention) As described above, various devices have been devised as ear feeding devices for storing ears, but all of them have complicated structures and a large number of parts, and therefore It has problems such as a relatively high failure rate.

The present invention was developed in view of the background of such conventional technology, and it is a synthetic structure that simplifies the structure, reduces the number of parts, and allows the ears to be extended properly at all times while minimizing the occurrence of failures. An object of the present invention is to provide a device for feeding out ears in a resin sheet joining device.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides roll winding on each of a plurality of raw fabric carts that are arranged facing each other in parallel with a required interval in the main body of the splicing machine. Synthetic resin sheet raw fabrics having a shape of In a synthetic resin sheet joining device that welds adjacent ends of synthetic resin sheets using electrode rollers,
A selvage feeding roller is rotatably supported on each of the raw fabric carts via a support mechanism, and a presser roller is provided facing the selvage feeding roller and pressing the selvage against the outer periphery of the selvage feeding roller. In addition, the ear portion delivery roller is configured to be rotationally driven by a driving electric motor via a power transmission mechanism.

(Function) In the present invention, the driving electric motor rotates the ear portion feeding roller in the ear feeding direction via the power transmission mechanism, and the outer periphery of the rotating ear portion feeding roller is held by the press roller. It is rolled out by pressing the ears.

(Embodiment) FIG. 1 is a side view showing an example of a sheet joining apparatus to which an embodiment of the present invention is applied, and in the figure, 1 is a main body of the joining machine, which has an upper plate 2 that slopes forward and downward; A high frequency generator (not shown) inside this main body 1;
Auxiliary equipment such as a drive motor and a speed reducer are provided.

A feed auxiliary roller 3 is provided along the front end of the top plate 2, and the feed auxiliary roller 3 is rotatably supported via a bracket 4 projecting from the front end of the top plate 2.

Further, a feed drive roller 5 is provided along the rear end of the top plate 2, and this drive roller 5 is rotatably supported via a bracket 6 protruding from the rear end of the top plate 2. It is connected to the aforementioned reduction gear and drive motor via a transmission mechanism (not shown), and is driven to rotate at a predetermined speed by the drive motor.

The feed roller 7 is attached to several places on the top surface of the feed drive roller 5.
is transposed. This feed roller 7 has a bar (not shown) installed between end plates 8 erected on both sides of the welding machine main body 1, and a plurality of rollers rotatably attached to the bar at appropriate intervals. It is rotatably supported by each tip of the arm 8a.

A folding bar 9 is rotatably provided at the rear end of the welding machine main body 1, and the tip of a crank rod 10 is pivotally attached to the intermediate portion thereof. The crank rod 10 is connected to a drive motor via a crank mechanism (not shown), and the drive motor causes the folding bar 9 to reciprocate at a predetermined amplitude. Also, a feeding auxiliary roll 11 is attached to the tip of the folding bar 9.
has been established.

13 and 14 are electrode rollers to which high frequency power is supplied from the above-mentioned high frequency generator. Then, the synthetic resin sheet 15 conveyed over the top plate 2 is clamped and the joints of the sheet 15 are welded.

In front of the splicing machine main body 1 (on the right side of the drawing), a plurality of raw fabric carts 16 are arranged facing each other in parallel with a required interval.

As shown in FIG. 2, each web cart 16 is equipped with a pair of web feed rollers 17, 17 that are parallel and rotatable with a required spacing between them. Vs fork 18,
18 protrudes upward. Then, roll-shaped synthetic resin sheet raw fabrics 19a, 19b, 19c
The spindle 20 is rotatably held by forks 18, 18, and the rolls 17, 1 are fed out from the original fabric.
7.

Reference numeral 21 denotes a drive motor, which is mounted on one end of the fabric cart 16 and drives the fabric feeding rollers 17, 17 through the power transmission mechanism 22 to the sheet fabrics 19a, 19.
b, 19c are rotated in the feeding direction (arrow A in FIG. 1).

Reference numeral 23 denotes a cutter device, which has a rotating cutter blade 23a rotated by a motor (not shown) and a roller 23b attached to the side of the cutter blade 23a.
It is set at a position that is set back from the cutting edge by a dimension corresponding to the thickness of one synthetic resin sheet 15.

Therefore, as described later, the sheet material 19
By rotating a, 19b, and 19c in the feeding direction, both longitudinal ends thereof are cut off as ears 24 in parallel to the feeding direction.

25 indicates a device for feeding out the ears. As shown in FIGS. 3 and 4, this selvage feeding device 25 includes an selvage feeding roller 25A, a presser roller 25B, and a driving electric motor 25C, and the selvage feeding roller 25A is provided with a support mechanism. It is rotatably supported by each of the raw fabric carts 16 via 26. That is, the support mechanism 26 is
A bracket 26A attached to the bracket 26A, a column 26B erected on the bracket 26A, and a bearing member 2 attached to the upper end of the column 26B.
6C, and an ear portion delivery roller 25A is loosely fitted onto a roll shaft 27 bridged by this bearing member 26C.

The presser roller 25B is loosely fitted onto the roll shaft 28 and is disposed opposite to the upper side of the ear part delivery roller 25A, and both ends of the roll shaft 28 pass through vertically elongated holes 26C1 and 26C1 formed in the bearing member 26C. It is supported by a bearing member 26C so as to be vertically movable. Further, the driving electric motor 25C is mounted and fixed on a support plate 26b attached to a support column 26B.

As shown in FIG. 3, the power transmission mechanism 29 includes a first pulley 2 fixed to the output shaft of a driving electric motor 25C.
9A, a second pulley 29B integrally connected to one side of the ear part feeding roller 25A, and an endless belt 29C stretched around these pulleys 29A, 29B.
It is composed of. In the figure, 30 indicates a guide roller.

Next, a procedure for joining the synthetic resin sheet 15 having the above structure and a procedure for feeding out the ears 24 will be explained.

Grasp the edges of each synthetic resin sheet raw material 19a, 19b, 19c, pull it out, hang it on the feed auxiliary roller 3, and then transfer it to the upper electrode roller 1.
4 and the lower electrode roller 13 and between the feed drive roller 5 and the feed roller 7.

Subsequently, by rotationally driving the feed drive roller 5 and the drive motor 21 mounted on the web carriage 16, the sheet webs 19a, 19b, and 19c are rotated in the feeding direction (arrow A), and the sheet 15 is fed out.

When the original sheets 19a, 19b, 19c rotate in the feeding direction, each original sheet 19a, 19
The cutter blade 23a of the cutter device 23 cuts both ends of the edges b and 19c into the ears 2 by the thickness of one sheet of the synthetic resin sheet 15 in parallel to the feeding direction.
It is excised as 4.

When the ear portion 24 reaches an appropriate length, the feed drive roller 5 and drive motor 21 are temporarily stopped.

Next, after grasping the end of each ear portion 24 and winding it around the guide roller 30 from below, the ear portion feeding roller 25A of the ear portion feeding device 25 and the presser roller 2 are connected.
Pull it out through the space between 5B.

After obtaining this state, feed drive roller 5
and rotates the drive motor 21. As a result, the edge lap portions, that is, the joint portions of each synthetic resin sheet 15 are pressed between the electrode rolls 13 and 14 and continuously welded. The welded synthetic resin sheet 15 is then folded toward the rear of the welding machine main body 1 by the reciprocating movement of the folding bar 9.

On the other hand, powder such as starch is applied to the inner surface of the synthetic resin sheet 15 and the circumferential surface of the sheet material 19a, 19b, 19c fed out from the material sheet material 19a, 19b, 19c from the powder injection tube 32 as shown by the arrow B. Since the body 33 is sprayed, the synthetic resin sheet 15
This powder 33 adheres to both sides of the synthetic resin sheet 15, and even when the synthetic resin sheet 15 is folded, there is no possibility that the synthetic resin sheet 15 will come into close contact with each other.

On the other hand, the driving electric motor 25C in the ear part feeding device 25 is rotationally driven. This rotation is transmitted to the ear portion delivery roller 25A via the power transmission mechanism 29, that is, the first pulley 29A, the endless belt 29C, and the second pulley 29B, and the ear portion delivery roller 25A is moved in the direction of arrow C, that is, the ear portion 24 is fed out. The ear portion 24, which is pressed against the ear portion delivery roller 25A by the presser roller 25B, is continuously fed out and accommodated as appropriate.

The synthetic resin sheet 15 has the powder injection pipe 32
Since the powder 33 injected from the lug is attached, there is a risk that slips may occur between the lug feeding roller 25A and the lug 24, causing slack in the lug 24 and reducing the feeding condition. There is.

In this way, the slack occurring in the ear portion 24, that is, the decrease in tension, is detected by a detector not shown, and this detection signal is input to the drive motor 25C to increase the rotation speed of the first pulley 29A. This makes it possible to absorb the slack of the ear portion 24 and let it out.

Of course, if the above-mentioned slack is absorbed and the selvedge parts are fed out with appropriate tension, that is, the selvedge parts 2 that are fed out from the sheet originals 19a, 19b, 19c.
When the feeding speed of the ear portion 24 fed out from the edge portion feeding roller 25A is synchronized with the feeding speed of No. 4, this state is detected by the aforementioned tension detector, and this detection signal is sent to the driving electric motor. 25C to adjust the rotation speed of the first pulley 29A.

(Effects of the Invention) As explained above, according to the present invention, the selvedge feeding roller is rotatably supported on each of the raw fabric carts via the support mechanism, and the selvedge feeding roller is provided with a selvedge on the outer periphery of the selvedge feeding roller. In addition to providing a presser roller for pressing the portion, the ear portion feeding roller is rotatably connected to the drive motor via a power transmission mechanism, thereby simplifying the structure and reducing the number of parts. The ears can be extended properly at all times while minimizing the occurrence of failures.

[Brief explanation of drawings]

Fig. 1 is a side view showing an example of a sheet joining device to which an embodiment of the present invention is applied, Fig. 2 is a perspective view showing an example of the arrangement of the fabric carts, and Fig. 3 is an enlarged side view of the main parts. , FIG. 4 is a sectional view taken along the - line in FIG. 3. 1... Bonding machine main body, 13, 14... Electrode roller, 16... Original fabric trolley, 19a, 19b, 19c
... Sheet original fabric, 25A ... Ear feeding roller, 25B ... Pressing roller, 25C ... Drive electric motor, 26 ... Support mechanism, 29 ... Power transmission mechanism.

Claims (1)

[Scope of utility model registration request] A roll-shaped synthetic resin sheet raw material is rotatably supported on each of a plurality of raw material carts that are arranged parallel to each other at required intervals in the main body of the splicing machine, and these raw sheet materials are rotated in the longitudinal direction. At least one end of the synthetic resin sheet is cut off parallel to the feeding direction, and the synthetic resin sheet is fed out to the main body of the joining machine, and the adjacent ends of these fed out synthetic resin sheets are welded together by an electrode roller. In the welding device, a selvage feeding roller is rotatably supported on each of the raw fabric carts via a support mechanism, and a presser roller is disposed opposite to the selvage feeding roller and presses the selvage against the outer periphery of the selvage feeding roller. In a synthetic resin sheet bonding apparatus, the edge portion feeding roller is configured to be rotationally driven by a driving electric motor via a power transmission mechanism. A device for feeding out ears.