JP2011219268A - Carrying roller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a carrying roller efficiently carrying a panel body by increasing friction resistance between the panel body and roller main bodies to prevent a slip.SOLUTION: This carrying roller includes friction bodies 2 each installed to a recessed circumferential groove 11 of the roller body 1 carrying the panel body K and each made of an annular elastic material, and the friction body 2 has a plurality of annular protrusion parts contacting with the panel body K. The friction body 2 has annular projecting stripe parts coming into pressure-contact with side wall faces of the recessed circumferential groove 11 in an installation state to the recessed circumferential groove 11. The friction body 2 has the annular projecting stripe parts coming into pressure-contact with the side wall faces of the recessed circumferential groove 11 to increase the friction resistance and to also serve as a seal lip part preventing infiltration of a liquid to a groove bottom part of the recessed circumferential groove 11.

Description

  The present invention relates to a conveyance roller.

  Conventionally, a conveyance roller that conveys a panel body has a friction body such as an O-ring attached to the roller body in order to apply a frictional force between the panel body and the roller body (see, for example, Patent Document 1). .

JP-A-08-88204

However, the O-ring has a problem that sufficient frictional force cannot be obtained, slipping occurs, and conveyance efficiency is lowered.
Further, when the panel body K is conveyed while being clamped from above and below as shown in FIG. 14, if the upper friction body 8A and the lower friction body 8B are displaced in the left and right direction, as shown in FIG. The position where the upper conventional friction body 8A presses the panel body K is separated from the position where the lower conventional friction body 8B presses, a shearing force is generated, and the panel body K is damaged if thin. There was a problem.

Therefore, an object of the present invention is to provide a transport roller that can efficiently transport a panel body by increasing frictional resistance between the panel body and a roller body to prevent slippage.
Another object is to provide a transport roller that can prevent the panel body from being damaged.

  In order to achieve the above object, the transport roller of the present invention has a friction body made of an annular elastic material attached to a concave circumferential groove of a roller body that transports the panel body, and the friction body includes the panel. It has a plurality of annular ridges that contact the body.

  A plurality of pairs of roller bodies that convey the panel body while sandwiching the panel body from above and below, and a friction body made of an annular elastic material that is mounted in the concave circumferential groove of the roller body. A plurality of annular ridges that come into contact with the panel body are provided.

  Further, the friction body has an annular ridge portion that is in pressure contact with a side wall surface of the concave circumferential groove in a state of being mounted in the concave circumferential groove.

  Further, the friction body is pressed against the side wall surface of the concave circumferential groove in the mounting state in the concave circumferential groove to increase the frictional resistance and prevent the liquid from entering the groove bottom portion of the concave circumferential groove. It has an annular ridge that also serves as a seal lip.

  Moreover, the said friction body has an annular groove part between the said adjacent annular protruding parts, and sets the depth dimension of this annular groove part to 0.2 mm or more.

According to the transport roller of the present invention, the contact pressure with the panel body is relatively large, the frictional resistance is increased, the slip is prevented, and the panel body can be transported reliably and efficiently.
In addition, when the panel body is transported while being clamped from above and below, even if the upper friction body and the lower friction body are displaced in the left-right direction, an annular ridge is formed near the corner of each friction body. Since it exists, generation | occurrence | production of a shearing force is prevented and the crack of a panel body can be prevented.

It is sectional drawing of 1st Embodiment of the conveyance roller of this invention. It is a side view of a 1st embodiment. It is sectional drawing which shows the friction body of 1st Embodiment. It is an operation explanatory view. It is an operation explanatory view. It is sectional drawing which shows the friction body of 2nd Embodiment. It is a figure which shows a stress state, Comprising: (A) is the stress state of 1st Embodiment, (B) is the stress state of 2nd Embodiment. It is sectional drawing which shows the friction body of 3rd Embodiment. It is sectional drawing which shows the friction body of 4th Embodiment. It is sectional drawing which shows 5th Embodiment, (a) is sectional drawing, (b) is a principal part expanded sectional view, (c) is a principal part expanded sectional view. It is sectional drawing of 6th Embodiment. It is a side view of 6th Embodiment. It is an operation explanatory view. It is sectional drawing of the conventional conveyance roller. It is operation | movement explanatory drawing of the conventional conveyance roller.

Hereinafter, the present invention will be described in detail based on the illustrated embodiment.
In the first embodiment shown in FIGS. 1 and 2, a plurality of roller shafts 3, 3 arranged in parallel in the transport direction Y of the panel body K on the lower surface Kb side of the panel body K, and the roller shaft 3 and a plurality of roller bodies 1 and 1 for feeding and conveying the panel body K while supporting the panel body K from the lower surface Kb side, and an annular (ring-shaped) elasticity mounted in the concave circumferential groove 11 of the roller body 1 And a friction body 2 made of a material.

  As shown in FIG. 3, the friction body 2 has three annular ridges 21 having a round cross-sectional shape in contact with the panel body K. Between the annular ridge 21 and the annular ridge 21, an annular groove 23 having a U-shaped cross section is provided. A total of two annular grooves 23 are provided. In the free state, the depth dimension h of the annular groove 23 from the top of the annular ridge 21 to the bottom surface of the annular groove 23 is set to 0.2 mm or more.

Moreover, as shown in FIG.3 and FIG.4, it has a pair of left and right cyclic | annular protrusions 22 and 22 which protrude in the left-right outward from the right-and-left side surfaces 2a and 2a of the frictional body 2. The right and left width dimension W22 in the free state from the most protruding point of one annular protruding part 22 to the most protruding point of the other annular protruding part 22 is the circumferential groove lateral width of the recessed circumferential groove 11 of the roller body 1 It is set larger than the dimension W11. The compression allowance (crush allowance) dimension Wa of the annular protrusion 22 is preferably set to 0.01 × W11 to 0.15 × W11. When Wa <0.01 × W11, sufficient adhesion cannot be obtained, and when Wa> 0.15 × W11, it is difficult to mount the groove 11 while being elastically compressed. The annular protrusion 22 is disposed closer to the inner diameter. The annular ridge 22, the annular ridge 21, and the annular groove 23 are formed concentrically on the inner diameter of the friction body 2.
Further, as shown in FIG. 4, with the friction body 2 mounted in the concave circumferential groove 11 and without the panel body K, the gap dimension ΔG between the left and right side surfaces 2a and the side wall surface 11a of the concave circumferential groove 11 is shown. Each dimension is set so that the following relational expression is established between the gap dimension ΔG and the circumferential groove lateral width dimension W11.
0.015 × W11 ≦ ΔG ≦ 0.05 × W11
If the gap dimension ΔG is set so that such a relational expression is established, as shown in FIG. 5 (or FIG. 13 to be described later), the protruding portion 21 is pressed against the panel body K and is elastically compressed and deformed. Even if the width dimension between the left and right side surfaces 2a and 2a is increased, each side surface 2a can be prevented from coming into contact with the opening end corner portion 20 of the concave circumferential groove 11 and being damaged. That is, the gap Z is always formed, and the side surface 2a is prevented from being damaged.

  The friction body 2 is made of an elastomer, and is preferably made of, for example, a fluorine-based elastomer, a silicone-based elastomer, an olefin-based elastomer, or the like, and has high corrosion resistance due to a chemical solution. The friction body 2 is mounted (fitted) in a stretched state in the concave circumferential groove 11, and the inner circumferential surface 2b is always in elastic contact (pressure contact) with the groove bottom surface 11b. This inner diameter stretching rate is set from 2% to 30%.

The panel body K is, for example, a glass substrate (board) for FPD that is as thin as a thickness t of 0.5 mm to 2.5 mm.
When the roller body 1 is made of resin, it is made of PE (polyethylene), PP (polypropylene), PTFE (polytetrafluoroethylene), POM (polyacetal), PA (polyamide), PVC (polyvinyl chloride), or the like. Yes, those having high corrosion resistance due to chemicals are preferable. When it is made of metal, aluminum alloy, stainless steel, carbon steel, chromium molybdenum steel, titanium steel, nickel steel, cobalt steel, etc., and those having high durability due to high loads are preferable.

  FIG. 7A shows a stress state acting on the panel body K from the friction body 2 in a state where the friction body 2 of the first embodiment and the panel body K are in contact with each other. A two-dot chain line indicates a free state of the friction body 2. It is a Maruyama type where the stress increases at the center.

Next, the usage method (action) of the first embodiment of the present invention will be described.
First, when the friction body 2 is mounted in the concave circumferential groove 11 of the roller body 1, as shown in FIG. 4 (in the mounted state), the left and right annular protrusions 22 and 22 are located on the left and right sides of the concave circumferential groove 11. The wall surfaces 11a and 11a are compressed inward and leftward and rightward (the annular protrusions 22 and 22 are pressed against the side wall surfaces 11a and 11a). It is elastically deformed from the shape in the free state indicated by the two-dot chain line to the shape in the attached state indicated by the solid line. A strong pressing force such as a side stress distribution line Fa is applied to the left and right side walls 11a, 11a to be in close contact with each other.

  In addition, the friction body 2 is fitted in a stretched state in the concave circumferential groove 11, and the inner circumferential surface 2b is always in contact (pressure contact) elastically with the groove bottom surface 11b. Further, when the annular ridge 22 formed closer to the inner diameter (inner peripheral surface 2b) is compressed and elastically deformed, a flow (movement) of the elastic material as shown by a thick arrow J in FIG. The groove bottom surface 11b is brought into close contact with a pressing force such as a bottom surface side stress distribution line Fb (such that the inner diameter side corner is more closely attached). In other words, the annular ridge 22 prevents slipping between the friction body 2 and the left and right side wall surfaces 11a, 11a, between the inner peripheral surface 2b and the groove bottom surface 11b, and at the same time, prevents the inner peripheral surface 2b of the friction body 2 from slipping. Prevent wear.

  Further, as shown in FIG. 5, between the panel body K and the roller body 1, the annular ridges 21, 21, 21 of the plurality of strips (books) of the friction body 2 are in a free state indicated by a two-dot chain line. From the shape, it is elastically deformed to the shape of the contact state indicated by the solid line, and contacts the panel body K. Compared with an O-ring (circular cross-section circle), the contact surface pressure (peak pressure) is increased, increasing the frictional resistance (obtaining sufficient frictional force) and preventing slippage.

  As shown in FIG. 5, even if the annular ridge 21 is compressed and the annular ridges 21 adjacent to each other in the left-right direction approach each other, the space between the annular ridge 21 and the annular ridge 21 is The U-shaped annular groove 23 is formed so as not to be in close contact. That is, the friction body 2 has a U-shaped annular groove 23 between the annular ridge 21 and the annular ridge 21 in the contact state with the panel body K.

  As shown in FIGS. 1 and 2, when the roller shaft 3 rotates and the roller body 1 is driven to rotate, the rotational force of the roller body 1 is reliably transmitted to the panel body K as a sending force, and the panel body K is transmitted. Send out and convey while stably supporting. The feeding force due to the rotation of the roller body 1 is not impaired by the slip, and the force is transmitted efficiently. That is, the friction body 2 is preferably provided on the roller body 1 on the driving side.

Further, as shown in FIG. 5, when the liquid e adheres to the panel body K, conventionally, the liquid e infiltrates into the groove bottom portion 11 c of the concave circumferential groove 11, and between the roller body 1 and the friction body 2. There was a risk of slipping.
However, when the annular ridge 22 is brought into close contact with the side wall surface 11a with a stronger pressing force (high contact surface pressure) than the O-ring, the annular ridge 22 acts like a seal lip, and the groove bottom 11c (annular ridge) 22 prevents the liquid e from entering the inner diameter side), prevents the occurrence of slippage, and prevents wear of the inner peripheral surface 2b due to the slippage.

  That is, the annular protrusion 22 serves both as a non-slip portion that increases the frictional resistance with respect to the roller body 1 and a seal lip portion that prevents the liquid e from entering the groove bottom portion 11c.

  Further, the processing liquid (liquid) e adhering to the panel body K flows into the annular groove 23 and prevents the liquid e from interposing between the panel body K and the annular ridge 21 (generation of a liquid film). To do. This prevents slippage (decrease in frictional resistance) between the friction body 2 and the panel body K due to the liquid e. Further, by setting the depth dimension h of the annular groove 23 to 0.2 mm or more (in the free state shown in FIGS. 3 and 10), the U-shaped annular groove is in contact with the panel body K. 23 can be formed reliably, preventing the generation of a liquid film due to the liquid e, or eliminating the liquid film to prevent slippage.

  In addition, the case where the liquid e is adhering to the panel body K is specifically, the panel body K is a glass substrate for FPD, and the conveyance roller of this invention is used for a glass manufacturing apparatus, a FPD manufacturing apparatus, etc. This is the case. In other words, the liquid e is a processing liquid such as an etching liquid or a cleaning liquid that has adhered (stored) in the etching (wet) process or the cleaning process.

  FIG. 6 shows a second embodiment. The cross-sectional shape of the annular protruding portion 21 of the friction body 2 has a flat portion (straight portion) 30 for contacting the lower surface Kb of the panel body K. An annular groove 23 is formed in a substantially V-shaped cross section. Other configurations are the same as those of the first embodiment.

FIG. 7B shows a stress state acting on the panel body K from the friction body 2 in a state where the friction body 2 and the panel body K of the second embodiment are in contact with each other. A two-dot chain line indicates a free state of the friction body 2. The stress is particularly large at both the left and right ends, and shows a peak pressure _Pmax . Therefore, in a state in which the friction body 2 is compressed by the panel body K, the pair of left and right annular ridges 22 and 22 protruding from the left and right side surfaces 2a and 2a near the left and right ends indicating the peak pressure _Pmax are concave grooves. The surface pressure (stress) that presses against the side wall surface 11a of the 11 increases, and thereby liquid can be more reliably prevented from entering the groove bottom portion 11c.

  FIG. 8 shows a third embodiment. An annular groove 23 is formed in a substantially circular cross section. Other configurations are the same as those of the second embodiment.

  FIG. 9 shows a fourth embodiment. The annular groove 23 is formed in a substantially trapezoidal dovetail shape in cross section. Other configurations are the same as those of the second embodiment.

FIG. 10 shows a fifth embodiment.
The friction body 2 has two annular ridges 21 having a round cross-sectional shape and one annular groove 23 having a U-shaped cross section between the adjacent annular ridges 21 and 21. .
Further, the cross-sectional shape of the annular ridge 22 is formed in a triangular mountain shape, as compared with the case of FIG. 3 shown by the two-dot chain line in FIG. Further, as shown in FIGS. 10A and 10B, the width direction is reduced in the direction of the bottom surface (inner peripheral surface) 2b with the straight sloped surface 24, and the right and left ridges are left and right (where the maximum width dimension). The width dimension W22 is reduced to the bottom face width dimension W100. Moreover, a relational expression of W 100 <W 11 is established between the bottom surface width dimension W 100 and the circumferential groove lateral width dimension W 11 (shown in FIG. 4). As a result, the friction body 2 can be smoothly mounted in the concave circumferential groove 11 from the bottom surface (inner peripheral surface) 2b side.
Moreover, due to the presence of the inclined surface 24, substantially triangular relief portions X are formed on both sides of the bottom surface (inner peripheral surface) 2b side (see FIG. 10), and the elastically compressed protrusions are mounted when the concave peripheral groove 11 is mounted. The material of the strip portion 22 flows to the escape portion X, and the above-described gap Z is reliably obtained.
In addition, as shown in FIG.10 (c), while making the top part of the protrusion part 22 into a round mountain type, it is good also as a shape which has the inclined surface 24, and has the same effect | action and advantage as the above-mentioned.

  The friction body 2 may have four or more annular ridges 21 and is preferably 2 to 5. If it is 1, the area contacting the panel body K cannot be sufficiently secured, and if it exceeds 5, the width of the annular groove 23 becomes narrow and the liquid e forms a liquid film between the panel body K and the friction body 2. (Slipping cannot be prevented). Further, the number of the annular groove portions 23 may be one or more, but it is desirable that the number is 1 to 4. If the number exceeds four, the width of the annular groove 23 becomes narrow, and there is a possibility that the liquid e forms a liquid film between the panel body K and the friction body 2 (slipping cannot be prevented).

Next, a sixth embodiment will be described.
As shown in FIGS. 11 and 12, a plurality of roller shafts 3 and 3 arranged in parallel in the conveying direction Y of the panel body K on both the upper and lower sides of the panel body K, and the panel body K that is externally fitted to the roller shaft 3 Are provided with a plurality of pairs of roller bodies 1, 1 that are conveyed while being pinched from above and below, and a friction body 2 similar to that of the first embodiment.

  Further, the upper roller body 1 (1A) and the upper friction body 2 (2A), and the lower roller body 1A and the upper friction body 2A are disposed at facing positions with the panel body K interposed therebetween. The roller body 1 (1B) on the side and the friction body 2 (2B) on the lower side are arranged so that the front-rear direction and the left-right direction coincide with each other. That is, the upper friction body 2A is disposed so that the left and right center line Sa and the lower left and right center line Sb coincide with each other (on the same straight line), and the front and rear center lines of the upper friction body 2A and the lower They are arranged so that the front and rear center lines coincide. In the present invention, the forward direction is the traveling direction Y of the panel body K.

A usage method (action) of the sixth embodiment of the present invention will be described.
As shown in FIGS. 11 and 12, by sending and transporting the friction bodies 2 and 2 in contact with the panel body K from above and below, the level of the panel body K is maintained and stable transportation is possible.

  Conventionally, as shown in FIG. 14, when the friction body 8A composed of the conventional upper O-ring and the friction body 8B composed of the lower O-ring (conventional upper and lower roller bodies 15, 15) are displaced in the left-right direction. As shown in FIG. 15, the friction body 8 made of an O-ring gives a strong pressing force G to the panel body K at the center of the O-ring (friction body 8), and the position of the force G pressing from the upper side. Then, the position of the force G pressing from the lower side is separated, a large shearing force is generated, and the panel body K is damaged such as cracks and cracks.

  However, in the present invention, as shown in FIG. 13, even if the upper friction body 2A and the lower friction body 2B are displaced in the left-right direction, the pressing forces acting from the upper and lower directions are balanced and the left and right positions are displaced. No shearing force is generated between the panels, and the panel body K is prevented from being damaged.

  Further, the upper friction body 2A allows the annular groove 23 to pass the liquid e so that the liquid pool (liquid e) is present on the upper surface Ka of the panel body K so as to cut off the liquid pool at the annular ridge 21. The annular protrusion 21 is brought into contact with the panel body K without the liquid e interposed therebetween to obtain a sufficient frictional force, thereby preventing slippage.

  The design of the present invention can be changed, and the roller body 1, the friction body 2, and the roller shaft are provided only on the upper surface Ka side of the panel body K, and a supporting driven roller is provided on the lower surface Kb side of the panel body K. It may be arranged.

  As described above, the transport roller of the present invention has the friction body 2 made of an annular elastic material that is mounted in the concave circumferential groove 11 of the roller body 1 that transports the panel body K. Since there are a plurality of annular ridges 21, 21 in contact with the body K, the contact pressure can be increased, the frictional resistance can be largely prevented from slipping, and the conveyance efficiency can be prevented from being lowered. That is, the contact pressure with respect to the panel body K can be ensured, and the slip between the panel body K and the friction body 2 can be reduced. A trough (annular groove 23) can be formed between the annular ridge 21 and the annular ridge 21, and the liquid e such as processing liquid can be prevented from interposing between the panel body K and the annular ridge 21. In particular, it is suitable for conveyance of an FPD glass substrate etching (wet) process or cleaning process.

  Also, there are a plurality of pairs of roller bodies 1 and 1 that convey the panel body K while sandwiching it from above and below, and a friction body 2 made of an annular elastic material that is mounted in the concave circumferential groove 11 of the roller body 1. Since the friction body 2 has a plurality of annular ridges 21 and 21 that contact the panel body K, the contact pressure can be increased, the frictional resistance can be greatly prevented from slipping, and the conveyance efficiency can be prevented from being lowered. That is, the contact pressure with respect to the panel body K can be ensured, and the slip between the panel body K and the friction body 2 can be reduced. A trough (annular groove 23) can be formed between the annular ridge 21 and the annular ridge 21, and the liquid e such as processing liquid can be prevented from interposing between the panel body K and the annular ridge 21. In particular, it is suitable for conveyance of an FPD glass substrate etching (wet) process or cleaning process. Further, even if the upper friction body 2 (2A) and the lower friction body 2 (2B) are displaced in the left-right direction, generation of shearing force is prevented, and cracking (breakage) occurs when the panel body K is thin. Can be prevented.

  Further, since the friction body 2 has the annular ridge 22 that presses against the side wall surface 11a of the concave circumferential groove 11 in the mounted state in the concave circumferential groove 11, slip between the friction body 2 and the roller body 1 is prevented. it can. That is, slipping between the friction body 2 and the side wall surface 11a and slipping between the inner peripheral surface 2b of the friction body 2 and the groove bottom surface 11b can be prevented, and wear of the friction body 2 due to slipping can be prevented.

  In addition, the friction body 2 is pressed against the side wall surface 11a of the concave groove 11 in the mounting state in the concave groove 11 to increase the frictional resistance, and the liquid e enters the groove bottom 11c of the concave groove 11. Since the annular ridge portion 22 is also used as a seal lip portion for preventing the slip, the slip between the friction body 2 and the roller body 1 can be prevented. That is, the sliding between the inner peripheral surface 2b of the friction body 2 and the groove bottom surface 11b due to the liquid e and the sliding between the friction body 2 and the side wall surface 11a due to the liquid e are prevented and the friction body 2 is worn due to the sliding. Can be prevented. The liquid e such as a cleaning liquid or a processing liquid can be used in an etching (wet) process or a cleaning process in which there is a possibility of adhering to the panel body K.

  Moreover, since the friction body 2 has the annular groove part 23 between the adjacent annular protrusions 21 and 21, and the depth dimension h of the annular groove part 23 is set to 0.2 mm or more, the panel body K is Even when wet with the liquid e or when there is a liquid pool, the panel e can be reliably brought into contact with the panel body K so that the liquid e does not intervene between the annular protrusion 21 and the panel body K. A reduction in efficiency can be prevented.

1 Roller body 2 Friction body
11 Concave groove
11a Side wall
11c groove bottom
21 Annular ridge
22 Annular ridge
23 Annular groove e Liquid h Depth dimension K Panel body

Claims (5)

A friction body (2) made of an annular elastic material mounted in the concave circumferential groove (11) of the roller body (1) for conveying the panel body (K);
The conveying roller, wherein the friction body (2) has a plurality of annular ridges (21) (21) in contact with the panel body (K). From a plurality of pairs of roller bodies (1) and (1) that convey the panel body (K) while being clamped from above and below, and an annular elastic material that is mounted in the concave circumferential groove (11) of the roller body (1) A friction body (2) comprising:
The conveying roller, wherein the friction body (2) has a plurality of annular ridges (21) (21) in contact with the panel body (K).   The said friction body (2) has the annular protrusion (22) which press-contacts to the side wall surface (11a) of this concave circumferential groove (11) in the mounting state to the said concave circumferential groove (11). 2. The conveyance roller according to 2.   When the friction body (2) is attached to the concave circumferential groove (11), the friction body (2) is pressed against the side wall surface (11a) of the concave circumferential groove (11) to increase the frictional resistance and the concave circumferential groove ( The conveying roller according to claim 1 or 2, further comprising an annular ridge (22) that also serves as a seal lip for preventing liquid (e) from entering the groove bottom (11c) of 11).   The friction body (2) has an annular groove (23) between the adjacent annular ridges (21) (21), and the depth dimension (h) of the annular groove (23) is 0. 5. The conveyance roller according to claim 1, 2, 3 or 4 set to 2 mm or more.

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