JPH0368147B2 - - Google Patents

Description

Detailed Description of the Invention [Industrial Field of Application] The present invention provides a method for transporting a long base material such as a fabric made of non-woven material, glass fiber, etc. by a drum, while The present invention relates to a drum for transporting a substrate in a heat treatment apparatus that performs heat treatment such as drying by blowing hot air from a hot air blower installed in the apparatus.

[Prior Art] As a heat treatment apparatus for a long base material such as a fabric made of nonwoven fabric or glass fiber, the base material is transferred by rotating a base material transfer drum.
Some types perform heat treatment such as drying by blowing hot air onto the base material from a hot air blower installed outside the drum.

The drum that transfers this base material has holes in the wall of the drum, and the base material to be transferred is sucked through the hole.
This prevents slippage between the base material and the drum and controls the linear speed of the base material. However, if the base material is run directly on the drum, the shape of the suction holes will be reflected on the base material, so a net is provided on the outer circumferential surface of the drum and the base material is run on the net so that the shape of the suction holes is based on the shape of the suction hole. I tried not to show it in the wood.

The conventional structure of winding and fixing this net around a drum is as shown in FIG.
A net 118 is wound around the outer peripheral surface of the drum body 1.
Net 11 with bands 120 at both ends of 11
8 and fixed with rivets 122 or the like.

[Problems to be Solved by the Invention] However, in the drum having the above structure, since the net 118 is fixed to the drum body 111, the net 11 is
Due to the difference in thermal expansion between the net 118 and the drum body 111, small wrinkles occur in the net 118, and the ambient temperature rises to 120°C.
If the amount exceeds that amount, large wrinkles will occur in the circumferential direction.
Therefore, there was a problem in that the wrinkles of the net 118 were transferred to the base material and wrinkles were formed on the base material.

Further, due to the difference in thermal expansion between the net 118 and the drum body 111, the net 118 tends to slip on the outer peripheral surface of the drum body 111. Therefore, there was a problem in that the net 118 slipped on the outer peripheral surface of the drum body 111 due to shrinkage of the traveling base material and the difference in rotational speed of the plurality of drum bodies 111, causing twisting of the net 118.

As the twisting of the net 118 progresses, there is also a fear that the net 118 may be destroyed.

[Object of the Invention] In view of the above-mentioned problems, the present invention provides a drum for transporting a substrate in a heat treatment apparatus that allows the substrate to run stably without wrinkles or twisting of the net. be.

[Means for Solving the Problems] The drum for substrate transfer in the heat treatment apparatus of the present invention has a drum body in which a suction hole for the substrate is provided on the outer circumferential surface, and a net is wound around the drum body, and both ends of the wound net are One end of a plurality of tension wires is attached at a required angle to the drum body, and the other end of the tension wire is guided toward the center of the side of the drum body by ring-shaped bending guides fixed to the periphery of both sides of the drum body. It is bent and attached to one end of a coiled spring, and the other end of this spring is attached radially to rings arranged on both sides of the drum body, and both sides of the net are pulled by the plurality of tension wires and springs. As a result, the net is held under tension on the outer peripheral surface of the drum body.

[Function] In the substrate transfer drum in the heat treatment apparatus configured as described above, a plurality of tension wires are attached to a net wound around the outer peripheral surface of the drum body, and each of the tension wires is connected to a ring-shaped bending guide member. The net is bent toward the center of the side of the drum body and attached to the spring, and these multiple springs are attached radially on the ring, so the net is pulled to both sides and the drum body is in tension. Retained.

Therefore, the net is not directly fixed to the drum body, but is rotatable by sliding in the circumferential direction on the ring-shaped bending guide relative to the drum body.
Even if there is a difference in thermal expansion between the net and the drum body, shrinkage of the base material, or a difference in the rotational speed of a plurality of drum bodies, the net will not be twisted. Further, even if the net expands and contracts in the longitudinal direction with respect to the drum body due to the difference in thermal expansion between the net and the drum body, the movement is absorbed by the expansion and contraction of the spring.

[Example] Hereinafter, an example of the present invention will be described based on the drawings.

F is a long base material such as a fabric made of nonwoven fabric, glass fiber, etc. to be heat treated.

1 is a heat treatment machine, which includes a drum 10 and a drum 1.
The hot air blower 14 is installed outside the drum 1, and the blowing port 16 of the hot air blower 14 is connected to the drum 1.
It has an arch shape that is curved along the outer peripheral surface of the base material F, and has a structure in which hot air hits the base material F uniformly.

Reference numeral 11 denotes a drum body for transferring the base material, and a plurality of suction holes 12 are provided on the outer peripheral surface of the drum body.
The structure is such that the base material F running on the outer circumferential surface of the base material F is sucked and run stably without slipping.

18 is a metal net wound around the outer peripheral surface of the drum body 11.

Reference numeral 20 denotes tension members, which are provided at required angles on both sides of the net 18 wound around the drum body 11, and are used to pull the net 18 in the longitudinal direction and attach it to the outer peripheral surface of the drum body 11. The tension member 20 includes a tension wire 22, a coil spring 24, a hook-shaped mounting member 26, a turnback 28, and a hook-shaped mounting member 30.

One end of tension wire 22 is welded to the side of net 18. In the case shown, the tension wires 22 are provided on the net 18 every 30 degrees, but
The number and angle of attachment may be set arbitrarily as long as both sides of the net 18 can be pulled uniformly.

Guide rings 32 are bending guide parts provided at both ends of the drum body 11, and have approximately the same size as the outer diameter of the drum body 11. has been fixed through. Since the guide ring 32 has an annular cross section, the tension wire 22 is bent along the outer peripheral surface of the guide ring 32 and extends toward the center of both sides of the drum body 11 .

One end of the coil spring 24 is attached to the other end of the tension wire 22, and the other end is hooked with a hook portion 26a of a hook-shaped attachment member 26.

The male threaded portion 26b of the hook-shaped attachment member 26 is screwed onto one end of the turnback 28, and the male threaded portion 30b of the hook-shaped attachment member 30 is screwed onto the other end.

Reference numeral 36 denotes a rotating ring, which is disposed on both sides of the drum body 11, and the pieces 30a of the hook-shaped attachment member 30 are hooked radially at required angles. This rotating ring 36 has 12 tension members 20
It is supported by both ends of the drum body 11 by means of , and is not directly attached to the drum body 11 . Note that since the guide ring 32 protrudes from the side of the drum body 11, the coil spring 24, turnback 28, and rotation ring 36 are attached to the drum body 1.
There is no contact with the side of 1.

Therefore, the net 18 is pulled from both sides of the drum body 11 by the tension member 20 having 12 coil springs 24.
It is attached to the outer peripheral surface of 1. Also, Net18
The degree of tension can be adjusted by adjusting the length of the male screw portions 26b, 30b which are screwed into the turnback 28.

Even if the net 18 moves in the circumferential direction of the drum 10, the tension wire 22 slides on the guide ring 32, and the rotation ring 36 rotates with it, so that the net 18 moves around the outer peripheral surface of the drum body 11. Rotate. Therefore, as before, Net18
is not directly fixed to the drum body 11, and no twisting occurs. Further, even if a force is applied only to a part of the net 18 in the tangential direction, the coil spring 24 corresponding to that part will not be bent in the radial direction of the drum 10 and the net 18 will not be twisted. Therefore, even if the ambient temperature rises, the net 18 will not be twisted in the circumferential direction, and no wrinkles will be formed, so that the base material F will not be wrinkled. Since the net 18 is not twisted relative to the drum body 11, the net 18 is not destroyed.

Further, even if the net 18 is expanded or contracted in the longitudinal direction of the drum 10, the expansion and contraction movement of the coil spring 24 is absorbed, and the net 18 is not wrinkled or destroyed.

With the heat treatment machine 1 configured as described above, the base material F running on the net 18 of the plurality of drums 10 is absorbed by the suction holes 12 and is stably transferred at a constant speed without slipping. Heat treatment is performed using hot air from 14. Moreover, when the base material F is transferred, the shape of the absorption hole 12 of the drum 10 is not reflected on the base material F due to the net 18, and no wrinkles are formed.

[Effects of the Invention] As described above, the drum in the heat treatment machine of the present invention does not twist the net or form wrinkles, so long base materials can be stably transferred and heat treated. I can do it.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway perspective view showing one embodiment of the present invention, FIG. 2 is an explanatory diagram of the heat treatment machine, and FIG.
4 is a partially enlarged sectional view of the drum, FIG. 4 is a partially enlarged side view of the drum, and FIG. 5 is a front view of a conventional drum. Explanation of symbols, F...Base material, 10...Drum, 1
2...Suction hole, 14...Hot air blower, 16...
Spray port, 18... Net, 20... Tension member,
22...Tensile wire, 24...Spring spring, 26...Mounting member, 28...Turnback, 30...Mounting member, 32...Guide ring, 34...Fixing member, 36...Rotating ring.

Claims (1)

[Claims] 1. A net is wound around a drum body having suction holes for the base material on the outer circumferential surface, and one ends of a plurality of tension wires are attached at required angles to both sides of the wound net, and other than the tension wires are One end of the coil spring is attached by bending the end toward the center of the side of the drum body by ring-shaped bending guides fixed to the periphery of both sides of the drum body, and the other end of this spring is bent toward the center of the side of the drum body. A heat treatment characterized in that the net is radially attached to rings arranged on both sides, and the net is held under tension on the outer peripheral surface of the drum body by pulling both sides of the net using the plurality of tension wires and springs. Drum for transferring substrates in equipment.