JP2009143717A - Takeup device for conveyor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a takeup device for a conveyor, enabling an air cylinder to move along the conveyor chain tension direction with small force without complicating or enlarging the air cylinder. <P>SOLUTION: In the takeup device 100 for a conveyor, a conveyor chain is wound around a sprocket 140 provided on a takeup shaft 130, and the takeup shaft 130 is borne on a movable base 110 supported and guided on a fixed base 120 slidable along the conveyor chain tension direction T. The air cylinder 160 to energize the movable base 110 is movably provided in the conveyor chain tension direction T. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a conveyor take-up device that adjusts the tension and axial position of a conveyor chain.

  2. Description of the Related Art Conventionally, a conveyor chain is wound around a sprocket provided on a take-up shaft, and the take-up shaft is supported by a movable base supported and supported by a fixed base so as to be slidable along the tension direction of the conveyor chain. As a mechanism for moving the movable table back and forth along the conveyor chain tension direction, a take-up device is known in which a movable table moving screw shaft is provided on the fixed base.

  These take-up devices 400 include, for example, a bearing 411 in which a take-up shaft 430 on which a sprocket 440 around a conveyor chain 450 is rotatably supported is provided on a movable table 410 as shown in FIGS. It is pivotally supported via the shaft.

  The movable base 410 is guided and supported so as to be movable back and forth along the tension direction T of the conveyor chain 450 with respect to the fixed base 420, and a nut 413 is fixed to a bracket 412 provided on the movable base 410. ing.

  On the other hand, a movable base moving screw shaft 421 is rotatably provided on the fixed base 420, and a handle mounting portion 422 and an interlocking sprocket 423 are attached to one end of the movable base moving screw shaft 421. And are provided so as to be rotatable together. In addition, an interlocking chain 424 is suspended between the left and right interlocking sprockets 423 so that the left and right movable platform moving screw shafts 421 rotate by the same amount, and a handle (not shown) is attached to the handle mounting portion 422. And the movable table moving screw shaft 421 is rotated, so that the movable table 410 can be moved back and forth along the tension direction T of the conveyor chain 450. (For example, refer to Patent Document 1.)

  Further, the conveyor chain is wound around a sprocket provided on the take-up shaft, and the take-up shaft is supported by a movable base supported and supported by a fixed base so as to be slidable along the tension direction of the conveyor chain. As a mechanism for moving the movable table in the conveyor chain tension direction, the movable table can be moved back and forth along the conveyor chain tension direction by an air cylinder provided on the fixed base. What to do is known.

  In these take-up devices 500, for example, as shown in FIG. 7 as an example, a take-up shaft 530 that rotatably supports a sprocket 540 wound around a conveyor chain 550 is provided with a bearing (not shown) on a movable base 510. Via a shaft.

The movable table 510 is guided and supported so as to be movable in the tension direction T of the conveyor chain 550 with respect to the fixed base 520, and the fixed base 520 is provided with an air cylinder 560. The movable table 510 can move back and forth along the tension direction T of the conveyor chain 550 by the reciprocating motion of the piston 561. (For example, see Patent Document 2.)
JP 2007-204210 A (page 3, FIGS. 1 and 2) Japanese Patent No. 3602068 (page 3, FIG. 4)

  However, in the conventional movable table moving screw shaft, the movable table can be moved back and forth along the conveyor chain tension direction, such as a large flow conveyor, the larger the conveyor, the larger the chain tension. Further, since the sliding resistance of the movable table is increased, there is a problem that a large force is required to rotate the movable table moving screw shaft.

  In addition, if the movable table can be moved back and forth along the conveyor chain tension direction by a conventional air cylinder, an air cylinder having a stroke that covers the entire adjustment range is required, which increases the size of the apparatus. There is a problem, and the normal air cylinder cannot fix the piston position in the middle of the stroke, so when fixing the position of the take-up shaft, an additional mechanism is required for that purpose, and the device becomes complicated and large was there.

  The present invention solves the problems of the prior art as described above, that is, the object of the present invention is to move the movable table in the direction of the conveyor chain with a small force without complicating and increasing the size of the apparatus. It is an object of the present invention to provide a conveyor take-up device that can move back and forth along.

  In the invention according to claim 1, the conveyor chain is wound around a sprocket provided on the take-up shaft, and the take-up shaft is guided and supported by the fixed base so as to be slidable along the tension direction of the conveyor chain. In the take-up device of the conveyor supported by the movable table, the movable table can be moved back and forth along the conveyor chain tension direction by a movable table moving screw shaft provided on the fixed base. The air cylinder provided on the fixed base can be urged in the direction of increasing tension, and the air cylinder is guided and supported so as to be movable back and forth along the conveyor chain tension direction according to the position of the movable base. Thus, the above-described problems are solved.

  In the invention according to claim 2, in addition to the configuration of the conveyor take-up device according to claim 1, the air cylinder is attached to the fixed base by a cylinder moving screw shaft provided in the air cylinder. The above-mentioned problem is further solved by being movable with respect to the fixed base with a fixing nut provided on the cylinder moving screw shaft.

  In the invention according to claim 3, in addition to the configuration of the conveyor take-up device according to claim 1 or 2, the movable table moving screw shaft is provided at both ends of the take-up shaft. The movable table moving screw shaft is provided with an interlocking sprocket, and the interlocking chain is suspended between the two interlocking sprockets, thereby further solving the above problem.

  According to a fourth aspect of the present invention, in addition to the configuration of the conveyor take-up device according to any one of the first to third aspects, the air cylinder is fixed to both ends of the take-up shaft. By being provided in the base, the said subject is further solved.

  In the conveyor take-up device according to the present invention, the conveyor chain is wound around a sprocket provided on the take-up shaft, and the take-up shaft is guided and supported on a fixed base so as to be slidable along the tension direction of the conveyor chain. In the take-up device of the conveyor supported by the movable table, the movable table can be moved back and forth along the conveyor chain tension direction by a movable table moving screw shaft provided on the fixed base. Since the air cylinder provided on the fixed base can be biased in the direction of increasing the tension, the movable base moving screw shaft can be rotated with a smaller force than before to resist the movable base against the tension. As well as the following special effects.

  That is, the conveyor take-up device according to the first aspect of the present invention is such that the air cylinder is guided and supported so as to be movable back and forth along the conveyor chain tension direction according to the position of the movable base. Since the piston of the air cylinder can always be in the most contracted state, the air cylinder can be used only for the stroke required for adjusting the tension and the axial position, and the entire apparatus can be downsized. .

  The conveyor take-up device according to the second aspect of the present invention is the cylinder moving screw provided on the air cylinder, in addition to the effect exhibited by the conveyor take-up device according to the first aspect. The shaft is movable with respect to the fixed base, and is fixed to the fixed base with a fixing nut provided on a cylinder moving screw shaft. Since the air cylinder can be easily moved and fixed, and the air cylinder can be easily moved to the optimum position, the stroke of the air cylinder can be further shortened to reduce the size of the entire apparatus.

  Further, in the conveyor take-up device according to the third aspect of the present invention, in addition to the effect exhibited by the conveyor take-up device according to the first or second aspect, the movable table moving screw shaft includes the take-up device. In addition to being provided on both ends of the shaft, an interlocking sprocket is provided on the movable base moving screw shaft, and an interlocking chain is suspended between the two interlocking sprockets, thereby rotating one of the movable base moving screw shafts. As a result, both the movable bases move, and the adjustment work becomes extremely easy.

  Furthermore, in addition to the effect which the conveyor take-up apparatus which concerns on any one of Claim 1 thru | or 3 show | plays, the said air cylinder is the said take-up axis | shaft. By being provided on both the fixed bases at both ends, both movable bases are biased in the direction of increasing tension by the air cylinder, so that the force for rotating the movable base moving screw shaft can be made smaller, The air cylinder can be made smaller.

  In the conveyor take-up device according to the present invention, the conveyor chain is wound around a sprocket provided on the take-up shaft, and the take-up shaft is guided and supported on a fixed base so as to be slidable along the tension direction of the conveyor chain. In the take-up device of the conveyor supported by the movable table, the movable table can be moved back and forth along the conveyor chain tension direction by a movable table moving screw shaft provided on the fixed base. The air cylinder provided on the fixed base can be urged in the direction of increasing tension, and the air cylinder is guided to move back and forth along the conveyor chain tension direction according to the position of the movable base. Supported, the movable platform can be moved back and forth along the conveyor chain tension direction with a small force without complicating and increasing the size of the device. As long as the, specific embodiments thereof are may any be any one.

  That is, the conveyor to which the take-up device for a conveyor according to the present invention is applied may be any one as long as it has a chain, and the chain row may be a single row or a double row.

  If the conveyor to which the take-up device for a conveyor of the present invention is applied is a conveyor that houses a chain in a sealed case such as a flow conveyor for powders and granules, the end of the case is It can also be a fixed base.

A conveyor take-up device according to an embodiment of the present invention will be described below with reference to the drawings.
FIG. 1 is a side view of a large flow conveyor apparatus to which the present invention is applied, FIG. 2 is a perspective view of a conveyor take-up apparatus according to an embodiment of the present invention, and FIG. 4 is a side view of the conveyor take-up device shown, and FIG. 4 is a plan view of the conveyor take-up device shown in FIG.

First, as shown in FIG. 1, a take-up device 100 for a conveyor according to an embodiment of the present invention moves a sprocket 140 on the driven side of one end of a large-sized flow conveyor device 200 back and forth along a tension direction T. It is provided so that it can be moved and the tension can be adjusted.
The large flow conveyor apparatus 200 has a case 260 for accommodating a conveyor chain (not shown) therein, and a drive sprocket 270 for driving the conveyor chain is axially positioned with respect to the case 260 at the other end. Is fixed.

  In addition, a carrier input port 280 for powder or the like is provided in the upper part of the case 260 in the vicinity of the take-up device 100 of the large flow conveyor apparatus 200, and a carrier discharge port 290 is provided in the lower part of the case 260 at the other end. The conveyed product is configured to be conveyed in the case 260 by a conveyor chain.

A conveyor take-up device 100 according to an embodiment of the present invention will be described in detail below.
As shown in FIGS. 2 to 4, a conveyor take-up device 100 according to an embodiment of the present invention includes a take-up shaft 130 that supports a sprocket (not shown) wound around a conveyor chain (not shown). Is rotatably supported via a bearing 111 provided on the movable table 110.

  The movable base 110 is guided and supported so as to be movable back and forth along the conveyor chain tension direction T with respect to the fixed base 120, and a nut 113 is fixed to a bracket 112 provided on the movable base 110. Yes.

  The fixed base 120 is provided in the case 260 at the end of the large flow conveyor apparatus 200, and the movable base moving screw shaft 121 with the axial direction as the tension T direction is provided on the end of the fixed base 120. The movable shaft moving screw shaft 121 is screwed into a nut 113 provided on the bracket 112.

  Further, a handle mounting portion 122 and an interlocking sprocket 123 are provided at one end of the movable base moving screw shaft 121 so as to be integrally rotatable with the movable base moving screw shaft 121, and an interlocking chain 124 is provided between the left and right interlocking sprockets 123. The left and right movable table moving screw shafts 121 are rotated by the same amount, and a handle (not shown) is attached to the handle mounting portion 122 and the movable table moving screw shaft 121 is rotated. The movable table 110 is movable back and forth along the tension direction T of the conveyor chain. The bracket 112 is provided with a movable base fixing means 116 so that the position of the movable base 110 with respect to the fixed base 120 can be firmly fixed.

On the other hand, on the opposite side of the bracket 112 across the bearing 111 of the movable base 110, an air cylinder 160 that can be moved back and forth along the tension direction T of the conveyor chain is provided. The cylinder moving screw shaft 162 is provided so as to be rotatable and not movable in the axial direction with respect to the air cylinder 160.
A cylinder moving nut 163 is fixed to the fixed base 120, and a cylinder moving screw shaft 162 is screwed with the cylinder moving nut 163. By rotating the cylinder moving screw shaft 162, the cylinder moving nut 162 is rotated. Similar to the movable table 110, the air cylinder 160 is movable back and forth along the tension direction T of the conveyor chain. A fixing nut 164 is screwed onto the cylinder moving screw shaft 162, and the fixing nut 164 is tightened in the direction of the cylinder moving nut 163 when the cylinder is fixed.

  A holding block 114 is provided on the air cylinder 160 side of the movable base 110, and a contact screw 115 is provided at the tip thereof. The tip of the piston 161 of the air cylinder 160 is connected to the head of the contact screw 115. They are facing each other so that they abut. Further, an air valve 165 for operating the air cylinder 160 is provided in the vicinity of the handle mounting portion 122 of the fixed base 120, and the air valve 165 and the air cylinder 160 are connected by a pressure pipe 166.

The take-up adjusting operation of the conveyor take-up device 100 configured as described above will be described in detail below.
First, the fixing nut 164 is loosened and the cylinder moving screw shaft 162 is rotated so that the air cylinder 160 approaches the movable base 110 side, and the tip of the piston 161 abuts against the head of the contact screw 115 to move the piston 161. The air cylinder 160 is advanced to a position where there is the least protrusion. At this position, the fixing nut 164 is tightened again to fix the air cylinder 160.
When the air cylinder 160 is provided at both ends of the take-up shaft 130, the same operation is performed on both sides.

Next, the movable table fixing means 116 is loosened so that the movable table 110 can be moved, the air valve 165 is operated to apply pressure to the air cylinder 160 so that the piston 161 protrudes, and in this state, the movable table moving screw The shaft 121 is rotated to move the movable base 110 in the direction opposite to the tension direction T of the conveyor chain.
At this time, since the movable table 110 is urged by the piston 161 of the air cylinder 160 in the reverse direction of the tension direction T of the conveyor chain, the movable table moving screw shaft 121 can be rotated with an extremely light force.

After moving the movable table 110 by a necessary distance, the movable table fixing means 116 is tightened again to firmly fix the movable table 110, and the air valve 165 is operated to release the pressure of the air cylinder 160.
First, the fixing nut 164 is loosened and the cylinder moving screw shaft 162 is rotated so that the air cylinder 160 approaches the movable base 110 side, and the tip of the piston 161 is moved to the head of the contact screw 115. The operation of advancing the air cylinder 160 to the position where the piston 161 protrudes to the smallest position may be performed at this time.

  As described above, the air cylinder 160 is started from the position where the piston 161 moves to the position where the protrusion of the piston 161 is minimum every time adjustment work is performed. Therefore, the stroke of the air cylinder 160 is the amount of movement required for one adjustment. The effect is enormous, such as being able to use a very compact device, simplifying the structure and performing a take-up adjustment operation with a light force.

The side view of the large sized flow conveyor apparatus with which this invention is applied. The perspective view of the take-up apparatus of the conveyor which is one Example of this invention. The side view of the take-up apparatus of the conveyor shown in FIG. The top view of the take-up apparatus of the conveyor shown in FIG. Side view of a conventional manual conveyor take-up device. The top view of the conventional take-up apparatus of the manual conveyor. The side view of the take-up apparatus of the conveyor by the conventional air cylinder.

Explanation of symbols

100, 400, 500 ... Take-up device 110, 410, 510 ... Movable base 111, 411 ... Bearing 112, 412 ... Bracket 113, 413 ... Nut 114 ... Presser block 115 ··································································································································· •・ Interlocking sprockets 124,424 ... Interlocking chains 130,430,530 ... Take-up shafts 140,440,540 ... Sprockets 160,560 ... Air cylinders 161,561 ... Pistons 162 ... Cylinder moving screw shaft 163 ... Cylinder moving nut 164 ... Fixing nut 16 5 ... Air valve 166 ... Pressure piping 200 ... Large flow conveyor device 260 ... Case 270 ... Drive sprocket 280 ... Transported object inlet 290 ... Transported object outlet 450,550 ..Conveyor chain T ... Tension direction

Claims (4)

The conveyor chain is wound around a sprocket provided on the take-up shaft, and the take-up shaft is supported by a movable base supported by a fixed base so as to be slidable along the tension direction of the conveyor chain. Up device,
The movable base can be moved back and forth along the conveyor chain tension direction by a movable base moving screw shaft provided on the fixed base, and tension is applied by an air cylinder provided on the fixed base. It can be energized in the increasing direction,
A take-up device for a conveyor, wherein the air cylinder is guided and supported so as to be movable back and forth along the conveyor chain tension direction according to the position of the movable table.   The air cylinder is movable with respect to the fixed base by a cylinder moving screw shaft provided on the air cylinder, and is fixed to the fixed base by a fixing nut provided on the cylinder moving screw shaft. The conveyor take-up device according to claim 1, wherein the take-up device is fixed to the conveyor.   The movable table moving screw shaft is provided on both ends of the take-up shaft, and the movable table moving screw shaft is provided with an interlocking sprocket, and the interlocking chain is suspended between the two interlocking sprockets. 3. A conveyor take-up device according to claim 1, wherein the take-up device is a conveyor.   The take-up device for a conveyor according to any one of claims 1 to 3, wherein the air cylinder is provided on the fixed bases at both ends of the take-up shaft.

Images