JP2902257B2 - Auto splice equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic splicing device for a bias cutter.

[0002]

2. Description of the Related Art FIGS. 12 to 14 show a conventional apparatus.
The raw material 3 unwound by the let-off conveyor 2 of the not-shown let-off 1 is controlled by an end surface position control device (EPC device) 4 so that one end surface is introduced to a fixed position of the cutting conveyor 5. The measured raw material is cut by a cutting device 6, and the cut fabric 7 is suction-conveyed at its tip by a vacuum transfer device 8 and spliced into a spliced fabric 9.

The spliced fabric 9 is cut
The sheet is conveyed by an unloading conveyor 10 arranged downstream of the conveyor 5 and is wound by a winding device 11. In addition, carry out
The conveying direction of the conveyor 10 is the same as the conveying direction of the cutting conveyor 5.
Cross at almost right angles. The length measurement of the raw fabric 3 is performed by measuring the valley of the encoder 12 placed on the raw fabric 3 and controlling the feed roller 13 so as to feed the distance l ₁ , and in the splice width direction of the cut fabric 7. positioning is performed by controlling so as send the distance l ₂ that is determined cutting conveyor 5 from the cut line.

[0004] The amount of wrapping of the splice is such that the rear end of the spliced fabric 9 is spaced a fixed distance l from the sensor 14.
Stop at the position ₃ and retract the vacuum transfer device 8 to a position corresponding to the signal of the sensor 15 of the EPC device 4, grasp the fabric 7 and calculate the distance l ₄ calculated so that the tip of the fabric 7 wraps by a predetermined amount. Controlled by sending.

[0005]

The above-mentioned prior art has the following problems. (1) Even if the raw material is controlled by the end surface position control device (EPC device) and introduced into the fixed position of the cutting conveyor, the raw material is measured, and when the cut fabric is sent to the splice position, the raw material is used. May slide on the cutting conveyor and move sideways, and even if the position where the vacuum transport device grips the cut fabric is controlled in accordance with the sensor signal of the EPC device, the fabric tip position will be at the position of the vacuum transport device. On the other hand, the position is not correct, and the lap amount is not correct even if the paper is conveyed as it is programmed. (2) Even if the front end of the cut fabric is accurately conveyed by the vacuum conveying device, the rear end may laterally move in the splice width direction while being conveyed from the cutting conveyor to the splice position on the unloading conveyor. In some cases, the splice portion may be different in the width direction, which is commonly called a dock ear.

SUMMARY OF THE INVENTION An object of the present invention is to eliminate the above-mentioned problems in the prior art, and to provide an auto splicing apparatus capable of accurately maintaining a lap amount and a splice position in a splice portion and performing good splicing. Things.

[0007]

[Means for Solving the Problems]

(1) A measuring device for measuring the position of the end face of the raw material during cutting is provided, and the position where the vacuum transfer device grips the cut fabric is controlled according to the measured end face position. In addition, the end face of the cut fabric may be detected by a sensor attached to the vacuum transfer device, but in this case, it is necessary to reduce the speed in order to increase the detection accuracy, and the cycle time is significantly extended. The problem remains. (2) A pair of guide blocks for guiding the rear end of the cut fabric so as not to move laterally is installed immediately before the splice position.

[0008]

According to the position of the raw fabric end face measured by the measuring device, a predetermined position of the cut fabric is suction-held and conveyed by the vacuum conveying device to convey a predetermined wrap amount. A pair of guide blocks having a width corresponding to the cut width of the cut fabric guides the fabric immediately before the splice position, so that the side surface shape of the splice portion becomes a linear shape without a dock ear.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. (1) Positioning of the cut fabric 7 in the splice width direction, (2) Vacuum suction device 8 for transporting the fabric 7, (3) Positioning of the rear end of the spliced fabric 9 will be described with reference to FIGS. Since it is the same as the related art described above, detailed description is omitted.

FIGS. 1 and 2 show the overall arrangement of a bias cutter provided with an automatic splicing device according to the present invention.
Even if the roller 16 of the EPC device 4 is replaced with a normal parallel roller, the overall function is not affected. Reference numeral 101 denotes a raw material end face position measuring device, the details of which are shown in FIGS. 3, 4, and 5.
Shown in The raw material end position measuring device 101 is attached to the traveling frame 17 of the cutting device 6 at a position where the sensor 18 can move in a range in which the sensor 18 can cover the expected raw material end position in parallel with the cutting line.

The sensor 18 is attached to the bracket 19 at a position at a predetermined height F from the surface of the cutting conveyor 5. The bracket 19 is slidably mounted on a rail 20 mounted parallel to the cutting line via a slider 21, and is slidably driven by a motor 22 via a screw rod 23 and a nut 24. A sensor 1 is provided at the shaft end of the motor 22.
An encoder 25 for detecting the position 8 is connected.
The rails 20, the motor 22, and the like are attached to a bracket 26, and the bracket 26 is fixed to the frame 17. Although the cutting motor 27 is not shown,
It is reciprocally attached to the traveling frame 17 by a known method.

Reference numeral 102 denotes a fabric guide device.
The details are shown in FIGS. In the fabric guide device 102, a guide block 28 is provided immediately before the splice position at a position almost in contact with the unloading conveyor 10 so as to be adjustable according to the width of the spliced fabric 9. The guide block 28 is attached to an arm 29, and the arm 29 is slidably attached to a frame 30 installed below the unloading conveyor 10 via a rail 31 and a slider 32. ,
Its position is adjusted to open and close symmetrically to the center line.

Next, the operation of the material end face position measuring device 101 will be described with reference to FIGS. In Figure 8, the original anti-3,
Conveying the cutting conveyor 5 with respect to the reference line on the cutting conveyor 5
The position of the end face parallel to the feeding direction (the lower end in FIG. 8) is conveyed to the position G and cut. During cutting the raw sheet 3 is stopped, the original fabric end surface position measurement device 101 measures the edge position. Since the cut fabric 7 is conveyed on the cutting conveyor 5 without slipping, the distance G is maintained. By performing feedback control of this distance information to the gripping position of the vacuum transfer device 8, the vacuum transfer device 8 can always be kept at a constant position H with respect to the leading end position of the cut fabric 7. Thereafter, by sending a fixed distance I from the reference line of the vacuum transfer device 8, the cut end of the fabric 7 is always transferred to a fixed position.

FIG. 9 shows the case where the end face position is J. Also in this case, the gripping position of the vacuum transfer device becomes the same position H as the tip position of the cut fabric, and the distance I from the reference line is sent. As a result, the tip of the cut fabric 7 becomes a fixed position. It is numerically possible to control only the feed amounts H + G + I and H + J + I of the cut fabric without feeding back the distance information G and J to the gripping position of the vacuum transfer device 8. The distance H is limited in order to grasp the leading end of the fabric 7, and if G and J change significantly, it becomes impossible to grasp as shown in FIG.

Next, the operation of the fabric guide device 102 will be described with reference to FIG. In the cases 1 and 2, the rear end is free during the conveyance while grasping the front end of the fabric 7 cut by the vacuum conveyance device 8 and may move right and left. If the rear end is also held during transportation, such a left-right movement can be prevented. However, as shown in FIG. 3, since the rear end becomes free after splicing, the left-right movement during the unloading by the unloading conveyor 10 is performed. The possibility remains.

Therefore, by providing the guide block 28 immediately before the splice portion, it is possible to prevent left and right movement as shown in FIG.

[0017]

The present invention is configured as described above.
Is cut by the raw material end face position measuring device.
While cutting the web on the conveyor, the cutting conveyor
Measures the position of the end face parallel to the transport direction and transports it in vacuum
By performing feedback control on the equipment,
Fabric with the suction holding position (gripping position)
Always keep a fixed position with respect to the tip of the
Fabric so that its tip is always in the same position
To the unloading conveyor that intersects the cutting conveyor
As a result, the splice lap amount can be accurately controlled without extending the cycle time. Also,
To provide a guide block just before the splice position
More spliced fabric in the width direction
Can be easily prevented.

[Brief description of the drawings]

FIG. 1 is an overall layout view of a bias cutter embodying the automatic splicing apparatus of the present invention.

FIG. 2 is a side view along the cutting conveyor of FIG.

FIG. 3 is a plan view of the raw material end face position measuring device.

FIG. 4 is a side view of FIG. 3;

FIG. 5 is a side view of FIG. 4;

FIG. 6 is a plan view of the fabric guide device.

FIG. 7 is a side view of FIG. 6;

FIG. 8 is a plan view for explaining the operation of the raw material end face position measuring device when the end face position is G;

FIG. 9 is a plan view for explaining the operation of the raw material end face position measuring device when the end face position is J;

FIG. 10 is a KK view of FIG. 8;

FIG. 11 is a plan view illustrating the operation of the fabric guide device.

FIG. 12 is an overall layout view of a conventional bias cutter.

FIG. 13 is a plan view along the cutting conveyor of FIG.

FIG. 14 is a view along AA in FIG. 12;

[Explanation of symbols]

 3 Raw Material 5 Cutting Conveyor 7 Cut Fabric 8 Vacuum Transfer Device 9 Spliced Fabric 101 Raw Material End Face Position Measurement Device 102 Fabric Guide Device

Claims (1)

(57) [Claims] 1. A a cutting conveyor for positioning the raw and cut at predetermined intervals and cut fabric, the switching
Unloading conveyor with transport direction crossing the cutting conveyor
When the vacuum transfer apparatus for taking out the cut fabric on the cutting conveyor onto the discharge conveyor, the automatic splicing device with a splicing mechanism for splicing the fabric on the discharge conveyor, on the cutting conveyor smell
The position of the conveying direction and parallel to the end surface of the raw measured during cutting Te, in accordance with the measured end surface position, the vacuum transfer apparatus cut fabric suction position control for raw end face position measuring holding An automatic splicing apparatus, comprising: an apparatus; and a fabric guide apparatus having a pair of guide blocks for guiding both side edges parallel to a conveying direction of the unloading conveyor of fabric immediately before a splice position.