JPS6364727A - Transferring apparatus for truck for raw sheet in apparatus for bonding synthetic resin sheet - Google Patents

Abstract

PURPOSE:To make it possible to carry out easily and accurately a fine adjustment of the amt. of sheet lap, by supporting plural trucks for raw sheets in a movable condition parallel to a main body of a bonding machine by means of a driving wheel and a following wheel and providing a driving device for driving and rotating the driving wheel in reduced speed and a switching device for elevating a manual operated wheel in a landing or rising position. CONSTITUTION:Each truck for raw sheets 2... is in a movable condition parallel to the width direction of the main body of a bonding machine 1 by means of a pair of driving wheels and at least a pair of following wheel 26. A driving device 27 is consisted of a geared motor driving and rotating deceleratedly the driving wheel 25 through a driving force transmitting means 27A such as a chain and so on and put on an end of each truck 2 for a raw sheet. A pair of manual operated wheels 28 are set on the truck for a raw sheet through a switching device 29, which is constituted of an eccentric shaft 29A connected eccentrically to a wheel shaft 28A of the manual operated wheel 28 and set on the truck for a raw sheet 2 in a rotatable condition and a switching lever 29B set on this eccentric shaft 29A and being rotatable along the shaft. When the switching lever 29B is laid down to the left, the manual operated wheel 28 is in its upper limit position and raised from the floor F and the driving wheel 25 is landed on the floor F and moved by the driving force. The switching lever 29B is laid down to the right, the manual operated wheel 28 is held in its lower limit position and the manual operated wheel 28 is landed on the floor F and the driving wheel 25 is thereby raised from the floor F and the wheel is manually moved.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a moving device for a sheet trolley in a joining device for vinyl sheets, that is, synthetic resin sheets, used in greenhouses and the like for greenhouse cultivation.

(Prior Art) Vinyl tents, ie, synthetic resin tents, used for greenhouse cultivation, etc., are made wide by joining adjacent side edges of a plurality of synthetic resin sheets each having a predetermined width.

The plurality of synthetic resin sheets are roll-shaped synthetic resin sheet material rotatably supported on each of a plurality of material carts that are arranged facing each other in parallel with the required spacing in the main body of the splicing machine. The hot melt R equipped with electrode rollers for heating is continuously fed out by rotating and guided through a guide roller to a feed roller, that is, a driving means, with adjacent side edges overlapped, for example. Welding and joining are performed by passing through the section.

(Problem to be Solved by the Invention) By the way, the overlapping amount for thermally welding the adjacent side edges of the synthetic resin sheet, that is, the amount of wrapping of the adjacent side edges, is determined by the amount that allows the rolled sheet to be freely rotated. This is done by moving the original fabric cart that is supported on the shaft.

That is, it is set by moving the original fabric carts relative to each other in the width direction of the original sheet fabric, that is, in a direction parallel to the splicing machine main body.

However, the conventional fabric trolley is simply supported movably by wheels, and relies on manual pushing by an operator to move the fabric trolley when setting the amount of wrap.

Therefore, when setting the sheet wrap amount, in the initial adjustment stage of moving the fabric trolley to a position near the set value, the fabric trolley can be moved by a relatively large amount of movement, so the operator can manually push the fabric trolley. However, although this can be easily done, it is extremely difficult to make minute adjustments by hand that require a slight movement (for example, a movement of 1 to 2 ml) from a position close to the set value to the set position. However, the adjustment work takes a long time and has the problem of poor workability.

The present invention was made to solve the above-mentioned conventional problems, and in particular facilitates slight movement of the sheet material cart from a position close to the set value of the lap amount to the set position, that is, fine adjustment of the sheet wrap amount. It is an object of the present invention to provide a moving device for a raw fabric truck in a synthetic resin sheet bonding apparatus that can perform the bonding process accurately.

(Means for Solving the Problems) In the sheet fabric truck moving device according to the present invention, a plurality of fabric carts are each supported by a driving wheel and a driven wheel so as to be movable in parallel to the splicing machine main body.

Further, a driving means for driving the driving wheels to rotate at a reduced speed is mounted thereon.

The vehicle also has a manual wheel that is raised and lowered to a grounded or floating state by a switching means, and is configured such that when the manual wheel touches the ground, the drive wheel floats up, and when the manual wheel floats, the drive wheel touches the ground.

(Function) In the present invention, one manual wheel is brought into contact with the ground by the switching operation of the switching means, and a state in which the material cart can be moved by hand pushing operation in cooperation with the driven wheel, and a state in which the driving wheel is brought into contact with the ground and driven. It is possible to select a state in which the material cart can be moved at a reduced speed by the means.

(Example) Fig. 1 is a perspective view of a synthetic resin sheet joining apparatus to which an embodiment of the present invention is applied, and Fig. 2 is a right side view of the same. In these figures, 1 is the main body of the joining machine; Front side of frame IA (
On the front side in FIG. 1 and the left side in FIG.
are roll-shaped vinyl sheets 3a, 3b, 3c.
The web supporter for supporting the web is a 0M web support which is provided with a stand 4... and cutter devices 5... corresponding to both ends of the webs 3a, 3b, 3c. The platform 4 is constructed by providing a figure-7 bearing 4b at the upper end of a column 4a that is erected at both ends of the platform 2, and these bearings 4b
The structure is such that a support shaft 8 passing through the original fabrics 3a to 3c is placed on it.

The cutter device 5 is a swinging rod 5 which has an abbreviated shape and is rotatably attached to the trolley 2 at the intersection of the upward arm and the sideward arm.
a, a rotary cutter blade 5b attached to the upper end of the upward arm of the swinging rod 5a, a roller 5C attached to the side of the rotary cutter blade 5b, a motor 5d that rotationally drives the rotary cutter blade 5b, and a rocker. The weight 5e is equipped with a weight 5e provided on the sideways arm of the swinging rod 5a, and the weight 5e can be slid along a long hole 5f bored in the sideways arm of the swinging rod 5a. The pressing force of the cutter blade 5b against the original fabrics 3a to 3c can be increased or decreased, and the outer peripheral surface of the roller 5c is shaped like the cutter blade 5b.
It is set at a position that is set back from the cutting edge of the vinyl sheet by a distance equivalent to the thickness of one sheet of Sl'' Sl.

In the machine frame IA, a plurality of brackets 7, . . .
~ These brackets are arranged in parallel between the ends of 3c? , . . . each have a support arm 8. ...is the spindle S,
It is attached to the fulcrum for tilting and rotating. And these support arms 8. There is a guide roller 10 at each tip of...
is rotatably installed, and the support arm 8. ... are cantilever-supported by the brackets 7, ... in an inverted state.

At this time, the guide roller 10 is located at a predetermined position above the webs 3a, 3c, and 3b on both sides arranged in two parallel rows, as shown in FIG. ．． When ... is raised up, it contacts the machine frame IA and is held in a slightly backward tilted state, and at this time, the guide roller IO and the rear original web receiver are positioned diagonally above the rear side of the table 4. .

Also, at the top of the machine frame IA, there is a feed roller, that is, a sheet sl.
-s is provided, and this tension driving means 11 is rotationally driven in the direction of the arrow in FIG. 2 by a drive motor (not shown). Reference numerals 12 and 13 are upper and lower electrode rollers provided between the guide roller 10 and the driving means 11 described above. These electrode rollers 12,1
3 is a guide plate 1 provided in an inclined state on the upper part of the machine frame IA.
The electrodes 12.
The vinyl sheets St, S2, and Sl passing between them are heated to a thermal welding temperature.

16 is a pressing force adjustment mechanism for the upper electrode roller 12.

Furthermore, a cutting device 17 is provided in the machine frame IA.

This cutting device 17 is a self-propelled type that moves reciprocally in the width direction of the vinyl sheet by a traveling motor 17d without lateral vibration along a rail 17a provided at the rear of the drive means 11. i and a cutting blade rotation drive motor 17h.

18 is a vinyl sheet folding device provided at the rear of the machine frame IA. This folding device 18 has a plurality of endless belts 18c, . . , and connects both rotating shafts 18a and 18b.
8d and a crank arm 18e installed on the machine frame IA are connected by a connecting rod 18F, and the crank arm 18e
The connecting arm 18 rotates once in the direction of the arrow in FIG.
d is configured to swing back and forth back and forth as shown by the arrow in the figure. Furthermore, a beam 19 extending laterally is provided above the machine frame IA, and a presser roller 21 is attached to the free end of the support arm 20, one end of which is pivotally connected to the beam 19. Because this presser roller 21 presses the vinyl sheet against the aforementioned feed roller 11,
The vinyl sheet wrapped around the feed roller 11 is sent backward. Further, a support rod 22 extending on the opposite side of the support arm 20 is supported in a cantilevered manner on the beam member 13, and a rolled vinyl sheet S for joining is attached to the tip of the support rod 22. The original fabric 23 is attached, and the vinyl sear (Sl) is fed out from the original fabric 23 and the guide pin 24
is guided between both electrode rollers 12 and 13 via.

As shown in FIG. 3, each of the raw fabric carts 2... has a pair of driving wheels 25 (however, only one driving wheel 25 is shown in the drawing) and at least one pair of subordinate wheels 25. Driving wheel 26 (however, only one driven wheel 2G is shown in the drawing, 27 is a driving means, and in this embodiment, it is a geared motor that drives the driving wheel 25 in deceleration rotation via a power transmission means 27A such as a chain, It is mounted on one end of the anti-bogie 2.

Reference numeral 28 denotes a pair of manual wheels (however, only one manual wheel 28 is shown in the drawing), which are attached to the web carriage 2 via the switching means 23. In this embodiment, as shown in FIG. 4, the switching means 29 includes an eccentric shaft 29A eccentrically connected to the axle 28A of the manual wheel 28 and rotatably attached to the web cart 2; When the switching lever 29B is in the position shown in FIGS. 3 and 4, that is, tilted to the left in the drawing, the manual wheel 28 is the upper limit. The drive wheel 25 is in position and floats above the floor F, and the drive wheels 25 are in contact with the floor F.

On the other hand, by tilting the switching lever 29B to the right in the drawing as shown in FIG. 5, the manual wheel 28 is held at the lower limit position.
float from the floor F.

Next, the operation of the embodiment apparatus configured as described above will be explained. The raw web supports are vinyl sheets (51 to S1) that are unwound from the webs 3a to 3c supported on the table 4, and both ends thereof are cut in a straight line parallel to the unwinding direction by the cutter device 5. At this time, the cutter device a5 is adjusted to the pressing force necessary to cut the thickness of one sheet of vinyl sheets (St to S) by the fixed position of the weight 5e, and is fed out from the original fabrics 3a to 3c. The ends of only the portions of the vinyl sheets S1 to S that are fed out are cut and removed by the cutter 5b, and the ends of the vinyl sheets S8 to S1 are aligned. This vinyl sheet S
t'' Sz is guided between the upper and lower electrode rollers 12 and 13 via the guide roller 1O, and is further sent rearward by the tension drive means 11 and the presser roller 21, and the folding device 1
8 endless bell) can be placed on top of 18c.

On the other hand, the bonding vinyl sheet S4 unwound from the original fabric 23 is passed through the guide pin 24 to both electrode rollers 12 and 13.
At each side edge of adjacent vinyl seams (Sl, Sl and S, S, S,) which are aligned at the ends and opposed at regular intervals by the cutter device 5, as shown in FIG. The bonding vinyl sheets S4 are overlapped across each other, and by sandwiching and heating them between both electrode rollers 12 and 13, the adjacent vinyl sheets S, , S
1 and Sl, and Sl and the bonding vinyl sheet S4 are welded.

The vinyl sheets (Sl-St) thermally welded by electrode rollers 12 and 13 are sent to a folding device 18.

The endless belt 18c of this folding device 18 has both rotating shafts 1
The crank arm 18e rotates in synchronization with the speed at which the vinyl sheet is fed out by the rotation of the crank arm 18a and 18b.
Since the receiver is reciprocated by the rotation of the reciprocating rocker, the joined vinyl sheet S is folded as the receiver is delivered onto the table.

Then, when each of the vinyl sheets S1 to S1 has been joined by a predetermined length, it is detected by a detection device (not shown), and the thermal welding part by the double-electrode rollers 12, 13, the driving means 11, etc. are driven. stops, the cutting die 17 is driven, and the joined vinyl sheet S is cut by the cutter blade 17i.

By the way, the joined state of the above-mentioned joined vinyl sheets S is as shown in Fig. 6, where the joining vinyl sheets S are welded over each side edge of vinyl sheets S1. However, in addition to this method, the seventh
As shown in the figure, the side edges of the bonding vinyl sheets Sl, Sl and S, , Sl may be directly welded to each other. In such a welding method, vinyl seams suitable for proper welding) Sl, St and s, +S
When setting the wrap amount W of the side edge of No. 1, and when setting the wrap amount W of the side edge of No.
When setting the facing distance W between the vinyl sheets sl, s, and s, , s, shown in the figure, first operate the switching lever 29B of the switching means 28 in each web trolley 2 to the position shown in FIG. The manual wheels 28 are set to the lower limit position and grounded on the floor F, and the driving wheels 25 are raised from the floor F, that is, each fabric cart 2 is movably supported by the manual wheels 28 and the driven wheels 26. Then, each fabric trolley 2 is pushed manually by the worker.
Push and move the vinyl sheets S, Sz, Sl, and S to a position near the facing distance W.

Wrap or approach the side edges of the
A state is obtained in which the drive wheels 25 are held on the floor surface F and the drive wheels 25 are grounded on the floor surface F, that is, a state in which each fabric trolley 2 is movably supported by the drive wheels 25 and the driven wheels 26, and then This is accomplished by driving the drive means 27 and decelerating and rotating the drive wheels 25 in either forward or reverse directions via the power transmission means 27A.

(Effects of the Invention) As described above, according to the present invention, each fabric cart is supported in parallel movement and rotation on the splicing machine main body by a driving wheel and a driven wheel, and a driving means for decelerating and rotating the driving wheel. is mounted on a fabric trolley, and these fabric trolleys are equipped with manual wheels that can be raised and lowered by switching the switching means, and are configured so that either the drive wheel or the manual wheel can be selected to ground the fabric to the floor. A slight movement of the sheet material cart from a position near the set value of the wrap amount or the facing interval of the side edge of the vinyl sheet to the set position, that is, a fine adjustment of the sheet wrap amount or the facing interval can be easily and accurately performed, Improved work efficiency can be achieved.

[Brief explanation of drawings]

Fig. 1 is a perspective view of a synthetic resin sheet joining apparatus to which an embodiment of the present invention is applied, Fig. 2 is a right side view of the same, Fig. 3 is a front view of a raw material cart, and Fig. 4 is a floating manual wheel. Fig. 5 is an enlarged front view showing the state of the driving wheels floating; Fig. 6 is an enlarged front view showing the floating state of the drive wheels;
The figure is a sectional front view showing an example of the welding method, and FIG. 7 is a sectional front view showing another example of the welding method. l... Splicing machine main body 2... Original fabric carts 3a to 3c... Original fabric 11... Tension drive means 12.13... Electrode roller 25... Drive wheel 26... Driven wheel 27 ... Drive means 28 ... Manual wheel 28 ... Switching means

Claims (1)

[Claims] (1) A roll-shaped synthetic resin sheet raw fabric rotatably supported on each of a plurality of raw fabric carts arranged in parallel and facing each other at a required interval in the welding machine main body is joined at least as described above. In the synthetic resin sheet joining apparatus, the synthetic resin sheet is rotated in the feeding direction by a tension drive means built into the machine body, and adjacent side edges of the fed out synthetic resin sheet are high-frequency welded by an electrode roller. The raw fabric cart is supported by a driving wheel and a driven wheel so as to be able to move in parallel to the splicing machine main body, and is mounted with a driving means for decelerating and rotationally driving the driving wheel, and is set to a grounded or floating state by a switching means. An apparatus for joining synthetic resin sheets, characterized in that it has a manual wheel that can be raised and lowered, and is configured such that when the manual wheel touches the ground, the driving wheel floats up, and when the manual wheel floats, the driving wheel touches the ground. A moving device for sheet roll carts.