Window pasting machine

Abstract

To provide a window pasting machine which can improve the register accuracy of a sheet-like rigid film to a mount and can efficiently obtain a high-quality product.SOLUTION: A window pasting machine is provided with a film transportation device 6 that comprises a transportation frame 60 inclined obliquely downward at an upper position of a mount transportation device 3 and loaded with a rigid film B supplied from a film supply device 5; and a sending-out conveyor 62 with a plurality of feed claws 66 projected at predetermined intervals for push-sending the rigid film B along the transportation frame 60. In the film transportation device 6, the rigid film B is push-sent by the feed claws 66 of the sending-out conveyor 62 while the sending-out conveyor 62 runs at a constant speed synchronized with transportation conveyors 30 and 31 of the mount transportation device 3, and the rigid film B is sent out while being laminated onto a mount A transported by the transportation conveyors 30, 31 of the mount transportation device 3.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a technology of a window pasting machine that pastes on a cardboard with a window conveyed by a conveying conveyor of a cardboard conveying device, and overlaps and bonds a sheet-like rigid film supplied from a film supply device along a window frame.

Background Art

[0002] Conventionally, a technology of a window pasting machine that pastes on a cardboard with a window conveyed by a conveying conveyor of a cardboard conveying device, and overlaps and bonds a sheet-like rigid film supplied from a film supply device along a window frame has been known. As a configuration of this type of window pasting machine, a cardboard with a window cut to a predetermined size is conveyed one by one at regular time intervals by a conveying conveyor of a cardboard conveying device. During this time, it is pasted along the window frame on the back surface of the cardboard by a pasting device, and then, a rigid film is supplied to the cardboard being conveyed while synchronized with the cardboard conveying device by a film supply device, so that the rigid film is overlapped and bonded along the window frame of the cardboard.

[0003] As a configuration of a conventional window pasting machine, for example, Patent Document 1 discloses a configuration including a film supply device that adsorbs a sheet-like rigid film cut to a predetermined size in advance on an adsorption drum and supplies it sheet by sheet (see FIG. 3 of Patent Document 1). By enabling continuous supply of the rigid film to the cardboard conveyed by the conveying conveyor of the cardboard conveying device via the adsorption drum, high-speed production can be expected.

[0004] However, in the conventional window pasting machine as described above, since the rigid film is adsorbed on the adsorption drum in the film supply device, and the conveying speed of the conveying conveyor of the cardboard conveying device and the peripheral speed of the adsorption drum are synchronized, and the rigid film is overlapped on the cardboard conveyed by the conveying conveyor of the cardboard conveying device, it is difficult to finely adjust including acceleration and deceleration of the rotation control of the adsorption drum, and it is impossible to accurately align the rigid film in the front-rear direction during the conveyance of the cardboard, and there is a problem that high-quality products cannot be obtained.

[0005] In particular, affected by the recent soaring raw material prices of rigid films, it is preferable that the surplus of the rigid film with respect to the window shape (window frame) of the backing paper can be reduced as much as possible, and the usage amount of the sheet-like rigid film can be reduced. There is a demand for a window pasting machine that improves the alignment accuracy of the rigid film with respect to the backing paper.

Prior Art Documents

Patent Documents

[0006]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0007] Therefore, in the present invention, regarding a window pasting machine, the above-mentioned conventional problems are solved, and an object is to provide a window pasting machine that can improve the alignment accuracy of a sheet-like rigid film with respect to a backing paper and efficiently obtain high-quality products.

Means for Solving the Problems

[0008] The problems to be solved by the present invention are as described above. Next, means for solving these problems will be described.

[0009] That is, in claim 1, in a window pasting machine that pastes on a cardboard with a window being conveyed by a conveying conveyor of a cardboard conveying device, and overlaps and bonds a sheet-shaped rigid film supplied from a film supply device along a window frame, a conveying frame is disposed obliquely downward at an upper position of the cardboard conveying device, on which the rigid film supplied from the film supply device is placed, and a feeding conveyor on which a plurality of feeding claws for pushing the rigid film along the conveying frame project at regular intervals is provided, and a film conveying device is provided. The film conveying device feeds out the rigid film while being overlapped with the cardboard conveyed by the conveying conveyor of the cardboard conveying device, with the moving speed of the feeding claws of the feeding conveyor being in a constant speed state synchronized with the conveying conveyor of the cardboard conveying device, and the rigid film being pushed by the feeding claws of the feeding conveyor.

[0010] In claim 2, the film conveying device is provided with a transfer conveyor on which a plurality of feeding claws for pushing the rigid film along the conveying frame project at regular intervals. The transfer conveyor is disposed at a lower position on the upstream side in the feeding direction with respect to the conveying frame, and the feeding conveyor is disposed at an upper position on the downstream side in the feeding direction with respect to the conveying frame, and the starting point side thereof vertically overlaps with the transfer conveyor. The rigid film supplied from the film supply device is continuously transferred from the transfer conveyor to the feeding conveyor.

[0011] In claim 3, a cardboard conveying detection means for detecting the position of the cardboard conveyed by the conveying conveyor of the cardboard conveying device, a film feeding detection means for detecting the position of the feeding claws of the feeding conveyor, and a control means for controlling the moving speed of the feeding claws of the feeding conveyor to a constant speed state based on the position of the feeding claws detected by the film transfer detection means based on the position of the cardboard detected by the cardboard conveying detection means are provided.

[0012] In claim 4, the control means switches the feeding claws of the feeding conveyor from a constant speed state to a temporary stop state when the feeding claws of the feeding conveyor reach the end point side.

[0013] In claim 5, the control means switches the feed claws of the delivery conveyor from a temporarily stopped state to an acceleration state faster than the constant speed state.

Effect of the Invention

[0014] As an effect of the present invention, the alignment accuracy of the sheet-like hard film with respect to the mount can be improved, and high-quality products can be efficiently obtained.

Brief Description of the Drawings

[0015]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Modes for Carrying Out the Invention

[0016] Next, modes for carrying out the invention will be described. In the following examples, the X direction of the arrow in the figure is the front-rear direction, and the Y direction of the arrow is the up-down direction.

[0017] First, the overall configuration of the window pasting machine 1 will be described below.

[0018] As shown in Fig. 1, the window pasting machine 1 of this embodiment is configured as a window pasting machine for laminating and pasting a backing paper A with a window and a sheet-like rigid film B. Specifically, it includes a backing paper supply unit 2 for supplying one by one the backing paper A cut to a predetermined size, a backing paper conveying device 3 for conveying the backing paper A placed with its back side facing upward at regular time intervals, a pasting device 4 for pasting glue on the back side of the backing paper A, a film supply device 5 for supplying one by one the rigid film B cut to a predetermined size, a film conveying device 6 for feeding out the rigid film B supplied from the film supply device 5 so as to overlap the backing paper A conveyed by the backing paper conveying device 3, a pasting device 7 for integrally pasting the backing paper A and the rigid film B, etc. It is configured such that the rigid film B fed out from the film conveying device 6 can be overlapped and pasted along the window frame on the backing paper A conveyed by the conveying conveyors 30 and 31 of the backing paper conveying device 3.

[0019] As shown in Fig. 5, the backing paper A is formed, for example, as a rectangular sheet made of cardboard, coated paper, cardstock, etc., or a blank in a developed state that can assemble a carton (box), and a rectangular window A1 is opened at a predetermined position. The rigid film B is formed, for example, as a sheet-like film with a thickness of about 150 μm or more made of polypropylene, polystyrene, polyethylene terephthalate, polycarbonate, etc., and is formed in a substantially similar rectangular shape with slightly larger vertical and horizontal dimensions than the shape of the window A1 of the backing paper A. In the window pasting machine 1 of this embodiment, the rigid film B is overlapped and pasted along the window frame of the window A1 of the backing paper A.

[0020] As shown in Fig. 1, the backing paper supply device 2 is disposed at the rearmost position of the device (the right side of the paper surface in Fig. 1), and the backing paper A is held in a state where a large number of them are laminated with their back sides facing up. Among the laminated backing papers A, the lowermost backing paper A is discharged to the downstream side in the conveying direction (from the right side to the left side of the paper surface in Fig. 1) and is supplied one by one to the backing paper conveying device 3 described later at a predetermined timing.

[0021] As shown in Fig. 1, the base paper conveying device 3 extends from a position above the device to the laminating device 7, and horizontally conveys the base paper A supplied from the base paper supply device 2 to the downstream side in the conveying direction (from the right side to the left side of the paper surface in Fig. 1 etc.). The base paper conveying device 3 is provided with conveying conveyors 30 and 31 for conveying the base paper A supplied one by one from the base paper supply device 2. The conveying conveyors 30 and 31 in this embodiment are configured as suction conveyors for sucking and conveying the base paper A.

[0022] The conveying conveyors 30 and 31 have endless conveying belts 30a and 31a with a plurality of suction holes penetrating the entire surface fixed to pulleys, rollers, etc. on a plurality of rotating shafts, and during the rotation of the conveying belts 30a and 31a, the upper surface (suction surface) is sucked by an air suction device (not shown), so that the base paper A placed on the conveying conveyors 30 and 31 is adsorbed on the upper surface (suction surface) of the conveying belts 30a and 31a through the suction holes and conveyed.

[0023] As shown in Fig. 1, the pasting device 4 is arranged on the upstream side in the conveying direction of the film conveying device 6 described later, and pastes along the window frame on the back side of the base paper A conveyed by the conveying conveyor 30 of the base paper conveying device 3. The pasting device 4 is provided with a pasting roller 40 that contacts the base paper A during conveyance and transfers the paste, and a pasting frame 41 etc. arranged on the roll surface of the pasting roller 40. The base paper A conveyed by the conveying conveyor 30 of the base paper conveying device 3 has its back surface abutted against the frame 41 of the pasting roller 40 and is fed out as the paste is transferred while the pasting roller 40 rotates (clockwise in Fig. 1).

[0024] Above the pasting roller 40 at a position above the device, a paste application roller 42 for applying paste to the surface (frame 41) of the pasting roller 40 is arranged, and a certain amount of paste is supplied from the paste supply unit 43 to the paste application roller 42. The paste application roller 42 is configured to rotate in the opposite direction to the pasting roller 40 so that the paste is applied to the frame 41 of the pasting roller 40 with uniform pressure through the paste application roller 42.

[0025] As shown in FIGS. 1 to 3, the film supply device 5 is disposed above the mount sheet conveying device 3, and takes out the lowermost hard film B one by one from among a plurality of stacked hard films B and supplies it to a film discharge device 6 described later at a predetermined timing. The film supply device 5 has the hard film B stacked and held at the stacking portion 50, and is configured such that the hard film B is taken out one by one from the stacking portion 50 by the rotary supply portion 51 and supplied to a conveying frame 60 above the transfer conveyor 61 of the film conveying device 6 described later.

[0026] The rotary supply portion 51 has a plurality (three in this embodiment) of film holding portions 53 rotatably disposed at equal intervals in an annular shape on a support frame 52 that is rotatably drivable. The rotary supply portion 51 is configured such that the support frame 52 rotates continuously (counterclockwise in FIG. 2) about the rotation axis 52a, and as the support frame 52 rotates, each film holding portion 53 also rotates continuously (clockwise in FIG. 2) in the direction opposite to the support frame 52 about the rotation axis 53a. Note that the film supply device 5 of this embodiment is configured such that each film holding portion 53 rotates twice while the support frame rotates once in the rotary supply portion 51.

[0027] The film holding portion 53 has an adsorption portion 54 projecting at the end for air-adsorbing and holding the hard film B. In the rotary supply portion 51, when a predetermined film holding portion 53 reaches the position P1, the adsorption portion 54 abuts on the lowermost hard film B in the placement portion 50 and air-adsorbs it, and as the support frame 52 rotates (counterclockwise), the hard film B is held by the adsorption portion 54 and rotated (clockwise), so that only one hard film B is taken out from the placement portion 50. Then, when the film holding portion 53 holding the hard film B reaches the position P2 while rotating (clockwise), the adsorption by the adsorption portion 54 is released, and the held hard film B is dropped and supplied to the conveying frame 60 on the transfer conveyor 61 of the film conveying device 6.

[0028] As shown in FIGS. 1 to 4, the film conveying device 6 is disposed above the backing sheet conveying device 3 and at the rear lower position of the film supply device 5 described above, and feeds out the rigid film B supplied from the film supply device 5 while overlapping it with the backing sheet A conveyed by the conveying conveyors 30 and 31 of the backing sheet conveying device 3. The film conveying device 6 of this embodiment includes a conveying frame 60 on which the rigid film B supplied one by one from the film supply device 5 is placed, a transfer conveyor 61 disposed below the conveying frame 60, a delivery conveyor 62 disposed above the conveying frame 60 and at a position where the starting point side overlaps the transfer conveyor 61 in the vertical direction, and a pressing roller 63 etc. disposed in front of the delivery conveyor 62 for pressing the rigid film B onto the backing sheet A from above.

[0029] The conveying frame 60 is composed of a pair of long, substantially L-shaped frame members on the left and right, has a predetermined separation in the left-right direction according to the length in the width direction of the rigid film B, and extends in the front-rear direction. The conveying frame 60 is disposed so as to incline downward toward the downstream side (the left side of the paper surface in FIG. 2 etc.) in the feeding direction of the rigid film B above the backing sheet conveying device 3, and a film placement surface 60a on which the rigid film B supplied from the film supply device 5 is placed is formed. An upper guide 64 for guiding the rigid film B from above is disposed above the film placement surface 60a (see FIG. 4).

[0030] The transfer conveyor 61 has a pair of endless annular conveyor chains 61a stretched in parallel so as to be rotatable along the front-rear direction, and is disposed so as to be inclined along the transfer frame 60 at a lower position on the upstream side in the feeding direction with respect to the transfer frame 60 (the right side of the paper surface in FIG. 2 etc.), and is wound around a drive sprocket 61b and a driven sprocket 61c. The transfer conveyor 61 has a plurality (two in this embodiment) of feed claws 65 projecting at regular intervals for pushing the rigid film B against the conveyor chain 61a. The feed claws 65 are disposed so as to project above the film placement surface 60a of the transfer frame 60 (see FIG. 4), and by being moved as the transfer conveyor 61 rotates, the rigid film B placed on the transfer frame 60 is sent downstream in the feeding direction.

[0031] For the transfer conveyor 61, the drive sprocket 61b is connected in a drive-transmittable manner to a drive motor 11 for a transfer conveyor (not shown) serving as a drive source of the transfer conveyor 61. By controlling the drive of the drive motor 11 by a control unit 10 described later, the moving speed of the feed claws 65 of the transfer conveyor 61 is controlled (see FIG. 6).

[0032] The delivery conveyor 62 has a pair of endless annular conveyor chains 62a stretched in parallel so as to be rotatable along the front-rear direction, and is disposed so as to be inclined along the transfer frame 60 at an upper position on the downstream side in the feeding direction with respect to the transfer frame 60, and at a position where the starting point side overlaps the transfer conveyor 61 in the vertical direction, and is wound around a drive sprocket 62b and a driven sprocket 62c. The delivery conveyor 62 has a plurality (two in this embodiment) of feed claws 66 projecting at regular intervals for pushing the rigid film B against the conveyor chain 62a. The feed claws 66 are disposed so as to project below the film placement surface 60a of the transfer frame 60 (see FIG. 4), and by being moved as the delivery conveyor 62 rotates, the rigid film B placed on the transfer frame 60 is sent downstream in the feeding direction.

[0033] The delivery conveyor 62 has a drive sprocket 62b drivingly connected to a drive motor 12 (not shown) for the delivery conveyor as a drive source of the delivery conveyor 62. The transfer conveyor 62 has its feed pawl 66 moving speed controlled by controlling the drive of the drive motor 12 by a control unit 10 described later (see FIG. 6).

[0034] The pressing roller 63 is composed of a pair of roller members arranged side by side in the left - right direction above the conveyor 31 of the mount paper conveying device 3, and is disposed with a predetermined gap so as to respectively contact the width - direction edges of the rigid film B fed out from the delivery conveyor 62. The pressing roller 63 presses and affixes the width - direction edges of the rigid film B to the mount paper A conveyed by the mount paper conveying device 3 while winding the rigid film B sent out by the delivery conveyor 62 between the outer peripheral surface of the pressing roller 63 and the conveyor 31.

[0035] Here, the drive control of the transfer conveyor 61 and the delivery conveyor 62 of the film conveying device 6 will be described in detail below.

[0036] As shown in FIGS. 6 and 7, in the window pasting machine 1 of this embodiment, the control unit 10 controls the drive of the transfer conveyor 61 and the delivery conveyor 62 of the film conveying device 6 so that the moving speed of the feed pawl 65 of the transfer conveyor 61 is controlled to be in a constant - speed state S, and the moving speed of the feed pawl 66 of the delivery conveyor 62 is switched and controlled to a constant - speed state S1, a temporary stop state S2, an acceleration state S3, and a deceleration state S4, respectively.

[0037] The control unit 10 is configured as a control device including a CPU that controls the whole, a ROM that stores various programs, a RAM as a working memory, a non-volatile memory, etc., and is connected to be able to drive and control the drive motor 11 of the transfer conveyor 61 and the drive motor 12 of the delivery conveyor 62 described above. It is also connected to a base sheet transfer detection sensor 13 as a base sheet transfer detection means for detecting the position of the base sheet A conveyed by the transfer conveyors 30 and 31 of the base sheet transfer device 3, a film transfer detection sensor 14 as a film transfer detection means for detecting the position of the feed pawl 65 of the transfer conveyor 61, and a film delivery detection sensor 15 as a film delivery detection means for detecting the position of the feed pawl 66 of the delivery conveyor 62. Based on the detection results of each detection sensor 13 to 15, the driving of the drive motor 11 of the transfer conveyor 61 and the drive motor 12 of the delivery conveyor 62 is controlled.

[0038] The base sheet detection sensor 13 is configured as a known non-contact sensor (photoelectric sensor), is disposed at an upper position above the transfer conveyors 30 and 31 of the base sheet transfer device 3, and detects the (front end) position of the base sheet A conveyed by the transfer conveyors 30 and 31 as position information.

[0039] The film transfer detection sensor 14 is configured as a known non-contact sensor (rotary encoder), is disposed on the drive shaft of the drive motor 11 for the transfer conveyor that is connected to the drive sprocket 61b of the transfer conveyor 61, and detects the position of the feed pawl 65 of the transfer conveyor 61 as position information from the rotation angle of the drive shaft.

[0040] The film delivery detection sensor 15 is configured as a known non-contact sensor (photoelectric sensor), is disposed at an upper position above the transfer conveyor 62, and detects the position of the feed pawl 66 of the transfer conveyor 62 as position information.

[0041] The window pasting machine 1 of this embodiment is preset so that the conveying speeds of the conveyors 30 and 31 of the backing paper conveying device 3 become a predetermined speed. Regarding the transfer conveyor 61, based on the position information of the backing paper A detected by the backing paper conveyance detection sensor 13, the control unit 10 calculates the deviation amount from the position of the feed pawl 65 detected by the film transfer detection sensor 14, and controls the drive (rotation speed) of the drive motor 11 so that the moving speed of the feed pawl 65 becomes a preset constant speed state S. Regarding the delivery conveyor 62, the control unit 10 calculates the deviation amount of the position of the feed pawl 66 detected by the film delivery detection sensor 15, and controls the drive (rotation speed) of the drive motor 12 so that the moving speed of the feed pawl 66 becomes a preset constant speed state S1.

[0042] In particular, regarding the delivery conveyor 62, the control unit 10 controls the drive of the drive motor 12 so that, in addition to the preset constant speed state S1 of the moving speed of the feed pawl 66 of the delivery conveyor 62, it can be switched to a temporary stop state S2, an acceleration state S3, and a deceleration state S4.

[0043] The constant speed state S1 is a state in which the feed pawl 66 of the delivery conveyor 62 moves at a predetermined constant speed. In this embodiment, the moving speed of the feed pawl 66 of the delivery conveyor 62 is set to be synchronized with (the same moving speed as) the conveyors 30 and 31 of the backing paper conveying device 3, and is set to be faster than the moving speed of the feed pawl 65 of the transfer conveyor 61 described above. The temporary stop state S2 is a state in which the feed pawl 66 of the delivery conveyor 62 stops without moving. The acceleration state S3 is a state in which the feed pawl 66 of the delivery conveyor 62 is accelerated until it reaches the maximum speed faster than the constant speed state S1. And the deceleration state S4 is a state in which the feed pawl 66 of the delivery conveyor 62 decelerates from the maximum speed reached to the constant speed state S1.

[0044] Referring to FIG. 7, the control of the moving speed of the feed pawl 66 of the delivery conveyor 62 by the control unit 10 will be described. First, as described above, the feed pawl 66 of the delivery conveyor 62 calculates the deviation amount of the position of the feed pawl 66 detected by the film delivery detection sensor 15 based on the position information of the mount A detected by the mount conveyance detection sensor 13, and is controlled to enter the constant speed state S1 (S100). When switching from the constant speed state S1 to the temporary stop state S2, the rotation of the drive motor 12 is temporarily stopped, and stop control is performed so that the feed pawl 66 stops without moving (S101).

[0045] Also, when switching from the temporary stop state S2 to the acceleration state S3, the drive motor 12 is operated and the rotational speed of the drive motor 12 is increased, and acceleration control is performed so that the feed pawl 66 moves at a speed higher than that in the constant speed state S1 (S102). When switching from the acceleration state S3 to the deceleration state S4, the rotational speed of the drive motor 12 is decreased, and deceleration control is performed until the feed pawl 66 reaches the constant speed state S1 (S103).

[0046] Returning to FIG. 1, the laminating device 7 is disposed on the downstream side in the conveyance direction of the mount conveyance device 3, and laminates the mount A and the rigid film B integrally. In the laminating device 7, a pair of upper and lower pressure rollers 70 and 71 are disposed, and the mount A with the rigid film B conveyed from the mount conveyance device 3 attached thereto is sent between the pressure rollers 70 and 71, so that the mount A and the rigid film B are integrally laminated.

[0047] On the downstream side in the conveyance direction of the laminating device 7, a discharge device 8 for discharging the laminated paper laminated by the laminating device 7 outside the machine, a defective discharge device (not shown) for discharging defective laminations outside the machine, etc. are disposed.

[0048] Note that, as shown in FIG. 1, the window pasting machine 1 of this embodiment is configured to be able to use not only a sheet-shaped rigid film B that has been pre-cut to a predetermined size, but also a roll-shaped unwind film C. Specifically, the window pasting machine 1 of this embodiment is provided with an unwind film supply device 9 that unwinds the roll-shaped unwind film C and supplies it to the base paper A being conveyed by the conveyor 30·31 of the base paper conveying device 3 while cutting it to a predetermined size.

[0049] In the film supply device 9, the unwind film C is unwound from the original roll supported by the unwind portion 90, which is disposed above the bonding device 7. It is sent between the cutter drum 91 and the pressure roller 70, which is disposed directly above the pressure roller (suction drum) 70 of the bonding device 7, and is cut to a predetermined size as the cutter drum 91 rotates. Then, the unwind film C cut to a predetermined size is overlapped with the base paper A conveyed by the conveyor 31 of the base paper conveying device 3 as it is adsorbed and held by the pressure roller 70, so that the base paper A and the rigid film B are integrally bonded.

[0050] Next, the window pasting process by the window pasting machine 1 of this embodiment will be described below.

[0051] As shown in FIGS. 1, 7 to 9, first, when the base paper A is placed on the conveyors 30·31 of the base paper conveying device 3 from the base paper supply device 2, it is conveyed in a state of being adsorbed to the upper surface (adsorption surface) of the conveyor belts 30a·31a. After being pasted by the pasting device 4, it is conveyed at regular time intervals until it reaches the bonding device 7. On the other hand, the rigid film B is supplied from the film supply device 5 to the film conveying device 6 at regular time intervals, and is transported to a position directly above the transfer conveyor 61 of the film conveying device 6 (position P2) while being adsorbed and held by the film holding portion 53 of the rotary supply portion 51, and then is placed on the film conveying surface 60a of the conveying frame 60.

[0052] In the film conveyance device 6, the driving of the transfer conveyor 61 and the delivery conveyor 62, that is, the moving speeds of the feed claws 65 of the transfer conveyor 61 and the feed claws 66 of the delivery conveyor 62, are controlled by the control unit 10. The rigid film 5 placed on the conveyance frame 60 is fed out downstream in the feed direction by being pressed by one of the feed claws 65 that moves in a constant speed state S in the transfer conveyor 61 (see Fig. 8(a)). At this time, one of the feed claws 66 of the delivery conveyor 62 moves in a constant speed state S1 at a speed faster than that of the feed claws 65 of the transfer conveyor 61. At the position where the transfer conveyor 61 and the delivery conveyor 62 overlap vertically, the rigid film B is transferred from the transfer conveyor 61 to the delivery conveyor 62 and is fed out downstream in the feed direction by being pressed by one of the feed claws 66 of the delivery conveyor 62 (see Fig. 8(b)).

[0053] In the delivery conveyor 62, one of the feed claws 66 moves in a constant speed state S1 synchronized with the conveyor 30·31 of the mount paper conveyance device 3. The rigid film B pressed by the feed claws 66 will be gradually wound between the outer peripheral surface of the pressing roller 63 and the conveyor 31 of the mount paper conveyance device 3, and will be overlapped with the mount paper A that has already reached the pressing roller 63, and the widthwise edge portion will be pressed by the pressing roller 63 and thus will be sequentially pasted on the window frame of the mount paper A (see Fig. 8(b)).

[0054] At this time, in the delivery conveyor 62, when one of the feed claws 66 reaches the turning position by the driven sprocket 62c at the end side, that is, the most downstream position in the feed direction, it is continuously switched from the constant speed state S1 to the temporary stop state S2 and then to the acceleration state S3 (see Fig. 7). In this way, by controlling the feed claws 66 of the delivery conveyor 62 to be instantaneously switched to the temporary stop state S2 at the end side, the rigid film B is pulled away from the temporarily stopped feed claws 66 by the winding of the pressing roller 63, and the contact (bouncing up) when the feed claws 66 are turned upward at the end side is avoided (see Fig. 9(a)).

[0055] Note that the delivery conveyor 62 is controlled such that the moving speed of one of the feed claws 66 returns from the acceleration state S3, passes through the deceleration state S4, and returns to the constant speed state S1 again. However, in the delivery conveyor 62 of this embodiment, since the other feed claw 66 is also interlocked, it is controlled to return to the constant speed state S1 at the latest by the time the next hard film B is fed out by the other feed claw 66.

[0056] And after the base paper A and the hard film B are integrally adhered by the pressing roller 63 (see Fig. 9(b)), they are sent to the laminating device 7 by the conveyor 31 of the base paper conveying device 3 and sent out between the pressure rollers 70 and 71 of the laminating device 7, so that the base paper A and the hard film B are integrally laminated.

[0057] As described above, the window pasting machine 1 of this embodiment pastes glue on the windowed base paper A conveyed by the conveyors 30 and 31 of the base paper conveying device 3, and laminates and pastes the sheet-shaped hard film B supplied from the film supply device 5 along the window frame. In the window pasting machine 1, a conveying frame 60 is disposed obliquely downward at an upper position of the base paper conveying device 3, and the hard film B supplied from the film supply device 5 is placed thereon. A film conveying device 6 is provided with a delivery conveyor 62 on which a plurality of feed claws 66 for pressing the hard film B along the conveying frame 60 project at regular intervals. The film conveying device 6 is such that the hard film B is pressed by the feed claws 66 of the delivery conveyor 62 in a constant speed state in which the moving speed of the feed claws 66 of the delivery conveyor 62 is synchronized with the conveyors 30 and 31 of the base paper conveying device 3, and is fed out while being overlapped with the base paper A conveyed by the conveyors 30 and 31 of the base paper conveying device 3. Therefore, the alignment accuracy of the sheet-shaped hard film B with respect to the base paper A can be improved, and high-quality products can be obtained efficiently.

[0058] That is, the window sticker machine 1 of this embodiment feeds out the rigid film B supplied from the film supply device 5 while pushing it with the feed claws 66 of the feed conveyor 62 along the transport frame 60 arranged in an inclined manner so as to overlap with the base paper A. Therefore, it is easy to synchronously control the transport speed of the transport conveyors 30 and 31 of the base paper transport device 3 and the moving speed of the feed claws 66 of the transfer conveyor 62. By controlling the moving speed of the feed claws 66, the alignment of the rigid film B in the front-rear direction can be accurately performed during the transport of the base paper A, and high-quality products can be obtained. In addition, by improving the alignment accuracy of the rigid film B with respect to the base paper A, the surplus of the rigid film B can be reduced and the usage amount can be decreased.

[0059] In particular, the film transport device 6 of this embodiment is provided with a transfer conveyor 61 in which a plurality of feed claws 65 for pushing the rigid film B along the transport frame 60 are protruded at regular intervals. The transfer conveyor 61 is arranged at a lower position on the upstream side in the feeding direction with respect to the transport frame 60, and the feed conveyor 62 is arranged at an upper position on the downstream side in the feeding direction with respect to the transport frame 60, and the starting point side thereof overlaps with the transfer conveyor 61 in the vertical direction. Since the rigid film B supplied from the film supply device 5 is configured to be continuously transferred from the transfer conveyor 61 to the feed conveyor 61, by separating and arranging the transfer conveyor 61 and the feed conveyor 62 in the vertical position, the supply of the rigid film B to the feed conveyor 62 can be facilitated, and the feeding accuracy to the base paper A can be improved.

[0060] In addition, the window pasting machine 1 of the present embodiment includes a base paper conveyance detection sensor 13 that detects the position of the base paper A conveyed by the conveyance conveyors 30 and 31 of the base paper conveyance device 3, a film delivery detection sensor 15 that detects the position of the feed claws 66 of the delivery conveyor 62, and a control unit 10 that controls the moving speed of the feed claws 66 of the delivery conveyor 62 to a constant speed state S1 based on the position of the base paper A detected by the base paper conveyance detection sensor 13 from the position of the feed claws 66 detected by the film transfer detection sensor 15. Therefore, based on the position of the base paper A conveyed by the conveyance conveyors 30 and 31 of the base paper conveyance device 4, it is easy to align the front and rear directions during the feeding of the rigid film B by the transfer conveyor 62, and a high-quality product with higher front and rear alignment accuracy can be obtained.

[0061] In addition, the control unit 10 of the present embodiment switches the feed claws 66 of the delivery conveyor 62 from the constant speed state S1 to the temporary stop state S2 when the feed claws 66 of the delivery conveyor 62 reach the end side. Therefore, by separating the rigid film B from the temporarily stopped feed claws 66, it is possible to prevent the feed claws 66 from contacting the rigid film B when they are folded upward on the end side.

[0062] In addition, the control unit 10 of the present embodiment switches the feed claws 66 of the delivery conveyor 62 from the temporary stop state S2 to the acceleration state S3 faster than the constant speed state, so that the delay in the phase of the feed claws 66 with respect to the position of the base paper A conveyed by the conveyance conveyors 30 and 31 of the base paper conveyance device 3 can be recovered, and the high-speed production can be achieved.

[0063] Note that the configuration of the window pasting machine 1 is not limited to the above-described embodiment, and various modifications are possible without departing from the object of the present invention.

[0064] That is, in the window pasting machine 1 of the above-described embodiment, the configuration in which two feed claws 65 of the transfer conveyor 61 and two feed claws 66 of the delivery conveyor 62 are respectively arranged in the film conveyance device 6 has been described. However, the number of such feed claws 66 is not limited to this, and for example, one or three or more may be respectively arranged.

[0065] Also, in the film conveyance device 6 of the above-described embodiment, the configuration in which a pair of endless annular conveyor chains 61a and 62a are stretched in parallel in the transfer conveyor 61 and the delivery conveyor 62 has been described. However, it is preferable that the distance between the conveyor chains 61a and 62a of the transfer conveyor 61 and the delivery conveyor 62 can be appropriately changed according to the size (length in the width direction) of the rigid film B.

Explanation of Signs

[0066] 1 Window pasting machine 3 Mounting paper conveyance device 5 Film supply device 6 Film conveyance device 10 Control unit (control means) 13 Mounting paper conveyance detection sensor (mounting paper conveyance detection means) 14 Film transfer detection sensor (film transfer detection means) 15 Film delivery detection sensor (film delivery detection means) 30 Conveyor 30a Conveyor belt 31 Conveyor 31a Conveyor belt 50 Loading section 51 Rotary supply section 52 Support frame 52a Rotating shaft 53 Film holding section 53a Rotating shaft 54 Suction section 60 Conveyor frame 60a Film placement surface 61 Transfer conveyor 61a Conveyor chain 61b Driving sprocket 61c Driven sprocket 62 Delivery conveyor 62a Conveyor chain 62b Driving sprocket 62c Driven sprocket 63 Pressing roller 64 Upper guide 65 Feeding claw 66 Feed Pawl

Claims

1. In a window pasting machine that pastes on a cardboard with a window, which is conveyed by a conveying conveyor of a cardboard conveying device, and overlaps and pastes a sheet-like rigid film supplied from a film supply device along a window frame, a conveying frame that is disposed obliquely downward at an upper position of the cardboard conveying device and on which the rigid film supplied from the film supply device is placed; a delivery conveyor on which a plurality of feed claws for pushing the rigid film along the conveying frame project at regular intervals; It is provided with a film conveying device, In the film conveying device, the rigid film is pushed by the feed claws of the delivery conveyor in a constant speed state where the moving speed of the feed claws of the delivery conveyor is synchronized with the conveying conveyor of the cardboard conveying device, and is sent out while being overlapped with the cardboard conveyed by the conveying conveyor of the cardboard conveying device. A window pasting machine characterized by the above.

2. The film conveying device is provided with a transfer conveyor on which a plurality of feed claws for pushing the rigid film along the conveying frame project at regular intervals, the transfer conveyor is disposed at a lower position on the upstream side in the feeding direction with respect to the conveying frame, and the delivery conveyor is disposed at an upper position on the downstream side in the feeding direction with respect to the conveying frame and at a position where the starting point side overlaps the transfer conveyor in the vertical direction, The window pasting machine according to claim 1, wherein the rigid film supplied from the film supply device is continuously delivered from the transfer conveyor to the delivery conveyor.

3. Cardboard conveyance detection means for detecting the position of the cardboard conveyed by the conveying conveyor of the cardboard conveying device; Film delivery detection means for detecting the position of the feed claws of the delivery conveyor; Control means for controlling the moving speed of the feed claws of the delivery conveyor to a constant speed state based on the position of the feed claws detected by the film transfer detection means based on the position of the cardboard detected by the cardboard conveyance detection means; The window pasting machine according to claim 1 or claim 2, comprising:

4. The window pasting machine according to claim 3, wherein the control means switches the feed claws of the delivery conveyor from a constant speed state to a temporary stop state when the feed claws of the delivery conveyor reach the end side.

5. The window pasting machine according to claim 4, wherein the control means switches the feed claws of the delivery conveyor from a temporary stop state to an acceleration state faster than the constant speed state.

Images