JPS595497B2 - Conveying device for cloth press machine - Google Patents

Description

[Detailed Description of the Invention] This invention heats and pressurizes two overlapping sheets of cloth by means of a pair of conveying belts that are in opposing contact and rotate in one direction, while sandwiching the cloth from one side and discharging it from the other. The present invention relates to a conveying device for a cloth press machine that melts an adhesive applied to one cloth to bond both cloths together.

Conventionally, the rotational force of the feed belt of this type of press machine is provided by the frictional force generated between each feed roller linked to a motor, and even if the outer diameter and rotation speed of each feed roller are the same, the load condition will vary. Due to the difference in speed, the rotations of both feed belts were not synchronized, resulting in the stacked fabrics shifting during transportation, resulting in a decrease in product quality. The object of the present invention is to overcome the above-mentioned conventional drawbacks by changing the winding angle and/or the contact pressure of one of the feed belts with respect to the feed roller.

Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, a feed roller 5 is connected to a motor 2 installed at the bottom of the machine frame 1 via a belt 3, and rotates around a shaft 4 supported horizontally on the machine frame 1. A lower feed belt 10 is endlessly stretched around feed rollers 8 and 9 rotatably supported on shafts 6 and 7 fixed to the machine frame in parallel with the lower feed belt 10. A rotatable roller 12 is pressed against the free end of the movable arm 11 by the cutting force of a spring 13 to apply appropriate tension, and the free end of the arm 14 is swingably supported on the machine frame 1. The nip roller 15, which is freely rotatable, is pushed toward the feed roller 5 by the elastic force of the spring 16, and when the nip roller 15 contacts the stray roller 5 via the lower feed belt 10, the nip roller 15 The winding angle of the lower feed belt 10 is made to be maximum. Interlocked with motor 2, downward feed bell 0
Shaft 1 supported horizontally on machine frame 1 above ? A feed roller 20 that rotates around , and a shaft 1? A feed roller 21 is rotatably supported on shafts 18 and 19 fixed to the machine frame 1 parallel to the
. An arm 2 that can swing to the machine frame 1 while applying pressure to the machine frame 1 to apply appropriate tension. The nip roller 28, which is rotatable at the free end of the The winding angle θ of the upper feed belt 23 is set to be maximum.

Both feed belts 23 and 10 are arranged in relation to each other so that the workpiece can be sandwiched between the lower surface of the upper feed belt 23 and the upper surface of the lower feed belt 10 and transferred to the left in FIG. An upper trowel 29 that constantly heats is fixedly arranged inside the belt 23, and a lower trowel 30 is arranged so as to be vertically movable via an air spring 31 inside the lower feed belt 10, facing the upper trowel 29. A pair of pressure rollers 32 and 33 are provided ahead of both trowels 29 and 30 in the transport direction of the workpiece, sandwiching both feed belts 23 and 10, and one pressure roller 32 is aligned with one fixed axis relative to the machine frame 1. The other pressure roller 32 is rotatably supported at the free end of an arm 34 which is swingable about a shaft 17 via an air cylinder CY2.

Both feed belts 10 and 23 have a length that can be divided into equal parts by a distance slightly longer than the length of the facing surfaces of both crucibles 29 and 30 in the direction of movement (in the embodiment, the upper feed belt 10 is divided into three equal parts, The lower feed belt 23 is divided into five equal parts), and an input part W for the object to be processed is opened on the lower feed belt 10 extending further forward in the moving direction than the upper feed belt 23.

The lower feed belt 10 is formed with small holes (signal bodies) P on one side thereof at equal intervals as described above, and a light emitter 42 is placed on one side and a light receiver is placed on the other side across the moving path Z3q. Detection means in which the detectors 43 are arranged facing each other are installed in the machine frame 1, and each
- Set the position of the hole P with respect to the joint so that the joint of the feed belt 10 is not located between the two iron bodies 29 and 30 when the FLP faces the detection means. Furthermore, if the position of the small hole P is misaligned with respect to the seam and the joint is located between the iron bodies 29 and 30 when the feed belt 10 is stopped, the detection means is moved and locked in the moving direction of the feed belt 10. This allows for adjustments. Regarding the air circuit diagram in Fig. 2, Ll and L2 are electromagnetic valves whose valve states are switched from the initial state shown in the figure when the coil is excited, and L3 to L5 are solenoid valves whose valve states can be switched from the shown state by manual operation. This is a manual valve.

Reference numerals 35 to 39 indicate pressure reducing valves that can appropriately reduce the pressure of air from an air supply source 40 such as a compressor, and can supply the air to the corresponding solenoid valves Ll, L2 and manual valves L3 to VL5, respectively. The set pressure is set to be weaker than the set pressure of the pressure reducing valve 35 and stronger than the set pressure of the pressure reducing valve 37.

41 is a booster relay that can pass a large volume of air to the same pressure as a small volume of air supplied to the pilot; in the embodiment, when air is supplied from the solenoid valve L1, the supply source The air from the solenoid valve 40 is reduced in pressure to be equal to the air of the solenoid valve L, and is arranged to be supplied to the air spring 31.

In the electrical circuit diagram of FIG. 3, SW1 and SW2 are switches that can be opened and closed manually, and when one of the contacts is closed, the other one is opened.

The starting switch FSW is always open and can be closed manually. The limit switch LSWl is normally open, and is closed when the lower iron 30 rises from a preparation position, which will be described later. The limit switch LSW2 is always open, and the lower iron 30 is connected to both feed belts 10, 23.
It is closed by contacting the upper trowel through the trowel. R1～
R, is a relay, and Rll to R5-1 are contacts with corresponding numbers. Similarly, T is a timer and T-1 is its contact. Note that the normally open contact R2-1 of the relay R2 is a delay relay. The present invention has the above configuration, and its operation will be explained next.

In the initial state shown in FIG. 2, the lower iron 30, the pressure roller 33, and the nip roller 28 are in the positions indicated by the two-dot chain lines in FIG. 1, respectively.

Then, when the manual valve L4 is manually switched from this state, the operating rod 44 of the air cylinder CYl is lowered at the pressure set by the pressure reducing valve 38, and the nip roller 28 is also lowered. The winding angle θ and the contact pressure of the upper feed belt 23 with respect to the roller 20 change. Therefore, by adjusting the pressure reducing valve 38, the displacement of the upper and lower feed belts 23 and 10 that occurs during operation, which will be described later, can be eliminated. Further, when the manual valve L5 is manually switched, the operating rod 45 of the air cylinder CY2 is lowered, whereby the pressure roller 33 presses the pressure roller 32 with the pressure set by the pressure reducing valve 39. Next, manual valve L,
When the pressure is switched manually, the air at the pressure set by the pressure reducing valve 37 flows through the solenoid valves L2 and Ll to the pilot of the booster relay 41.
The pressure is reduced to a set pressure of
Close l.

Incidentally, when the lower trowel 30 is lowered to the lowest position indicated by the two-dot chain line in FIG. 1, a sufficient maintenance space for the lower feed belt 10 is ensured.

As described above, when the manual valves L3 to L are switched from the state shown in FIG.
is supplied to the air spring 31 via the booster relay 41, which causes the lower iron 30 to rise from the preparation position to a slightly pressurized position further upward, and in cooperation with the upper iron 29, the feed belt 23,
Lightly press 10.

At the same time, the motor 2 begins to rotate and moves both feed belts 23 and 10 in the direction of the arrow via the feed rollers 5 and 20. Therefore, when the outer material and the interlining coated with a well-known adhesive are placed one on top of the other on the lower feed verit 10 in front of the feed roller 21, the objects to be processed are transferred to both feed belts 23,
It is held between 10 opposing contact portions and transferred to the left in FIG. The adhesive is heated while passing through the trowels 29 and 30, and immediately after melting, it is pressed between the pressure rollers 32 and 33, so that the objects to be processed are bonded together. Next, switch S
When Wl is opened and switch SW is closed, relay R4 is turned on, normally closed contact R4-1 is opened, and solenoid valve L2 is demagnetized, so air at the pressure set by pressure reducing valve 37 is supplied to air spring 31 from the supply source. As a result, the lower iron 30 is lowered from the slight pressure position to the preparation position, and the motor 2 is stopped.

When the start switch FSW is closed from this state, the relay R1 is turned on and its normally open contacts R and -2 are closed, so that the motor 2 rotates and moves both feed belts 23 and 10 in the direction of the arrow in FIG. At the same time, the normally open contact R1-1 closes until the small hole (signal body) P is removed from the position facing the pair of light emitter 42 and light receiver 43 (detection means) due to the movement of the lower feed belt 10. After a delay of , the delay relay R is turned on and its normally open contact Rt-1 is closed, so that the lower feed belt 10 further moves in the direction of the arrow. When the next small hole P reaches the position facing the detection means, relay R5 is turned on and its normally open contact R5-1 is closed, so relay R3 is turned on and its normally open contact R3-1 is opened to start motor 2. Stop. As a result, the workpiece placed on the lower feed bell opening 0 in front of the feed roller 18 is transferred between the two trowels 29 and 30 and stopped. At the same time, normally open contact R3
-2 is closed and the solenoid valve L1 is energized, so that air at the pressure set by the pressure reducing valve 35 is supplied from the supply source 40 to the air spring 31, and the lower iron 30 is moved from the ready position to above the slight pressure position. The object to be processed is pressed between it and the upper trowel 29 via both feed belts 23 and 10, and heated at the same time.
On the other hand, when the lower iron 30 rises to the position where it presses the upper iron 29, the contact LSW2 of the limit switch closes, which turns on the timer T, and after a predetermined period of time, the normally closed contact T-1 opens, so that the relay R1 is turned off and contact R1-
1 is released, relays R2 and R3 are turned off, and solenoid valve L1 is demagnetized.
Air at the pressure set in step 7 is supplied from the supply source 40, so that the lower iron 30 descends to the ready position and returns to its initial state. The adhesive is melted by heating during this time, and the objects to be treated are bonded by applying pressure. Note that while the two feed belts 23, 10 are moving, the two trowels 29,
30 is far away, so the moving direction of the processed object is the front force? The entire surface of the object to be processed is heated uniformly by raising the lower trowel 30 without overheating. As described above, according to the present invention, by adjusting the rotational force of one feed belt with reference to the other feed belt, the rotation of both feed belts can be easily synchronized, thereby preventing fabric slippage during transfer. It has the effect of preventing and improving product quality.

[Brief explanation of the drawing]

Figure 1 is a schematic side view of the cloth press machine, Figure 2 is an air circuit diagram,
FIG. 3 is an electrical circuit diagram. 5, 8, 9, 20, 21, 22...Feed roller, 10,23...Feed belt, 29,30...
...Front body, 28...Nitsupurora 1.

Claims (1)

[Claims] 1. Two sets of feed rollers are arranged above and below and supported on the machine frame so as to be rotatable about their separate and parallel fixed axes. It has a pair of endless feeding belts that are stretched separately from each other, and a pair of iron bodies that can press the opposing contact portions of both feeding belts and heat at least one of them. In a fabric press machine that feeds cloth from one section, heats and pressurizes it, and then discharges it from the other section facing the other section, it is possible to change the winding angle of one feed belt against the feed roller, the contact pressure against the feed roller, or both. A conveying device for a fabric press having a nip roller associated with one or both of a feed roller and a feed belt.