JP2010254413A - Chain conveyor device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a chain conveyor device for smoothly performing processes such as painting and drying, temporarily stocking, and the like while avoiding a traveling means and the like from becoming an obstacle, increasing freedom of weight and size of a conveyed object that can be conveyed with a small-sized structure, and smoothly conveying and processing by preventing problems from occurring on the processes for the conveyed object due to rocking caused by traveling vibration or the like and preventing the conveyed object itself from being damaged. <P>SOLUTION: In the chain conveyor device travelling while the conveyed object with a horizontal support shaft 120 in a cantilever state, a fall prevention roller 117 at the upper end of a vertical support section 111 of a carrier 110 is guided by a fall prevention rail 104 provided at the upper part of the vertical support section 111. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a chain conveyor apparatus that cantilever-supports a horizontal support shaft that supports a conveyed product, and relates to a chain conveyor apparatus that is optimal for a conveyance processing facility such as a painting line for automobile components.

  Conventionally, in order to smoothly carry out processing such as painting and drying without obstructing the traveling means etc., the transported object is supported as a chain conveyor device that cantilever-supports the horizontal support shaft that supports the transported object. 2. Description of the Related Art A chain conveyor device is known that has a carrier that cantilever supports a horizontal support shaft and travels while being guided by a travel rail, and the carrier is driven by a chain provided below the travel rail.

  As shown in FIGS. 7 and 8, the known chain conveyor apparatus 500 conveys a transported object W such as a motorcycle fuel tank supported by a horizontal support shaft 520 along a traveling rail 501, and performs processing such as painting. Is configured to do.

  The horizontal support shaft 520 has a transport object support portion 521 that detachably supports a transport object W such as a motorcycle fuel tank at one end, and two support shafts having different numbers of teeth from the alignment cam 523 at the other end. A dynamic sprocket 522 is mounted on the shaft, and the horizontal support shaft 520 is rotatably supported by the upper end portion of the vertical support portion 511 of the carrier 510.

  The conveyed product W can rotate around the horizontal axis when the support shaft rotating sprocket 522 meshes with a rotation chain (not shown), and the alignment cam 523 is guided by cam guide means (not shown). Thus, the rotation angle can be fixed to the horizontal support shaft 520.

  The carrier 510 includes a traveling carriage unit 512 having a traveling roller 516 that travels on a traveling rail and a traveling guide roller 517 that guides the vehicle during curved traveling. The carrier 510 is driven in a conveying direction provided below. It is comprised so that it may move to a transfer direction by connecting with the chain 530 (for example, refer patent document 1).

Japanese Patent Laid-Open No. 2002-336746 (3rd to 4th pages, FIG. 2 and FIG. 3)

  However, the known chain conveyor apparatus 500 is configured such that the horizontal support shaft 520 is rotatably supported by the upper end of the vertical support portion 511 of the carrier 510 and supports the conveyed product W sideways. In order to maintain the 511 vertically and support the conveyed product W without moving up and down, it is necessary to limit the weight and size of the conveyed product W in consideration of the balance of the horizontal support shaft 520 at the upper end portion of the vertical support portion 511. In addition, there is a problem that the opposite end portion of the conveyed product support portion 521 needs to be heavy or lengthened and the structure of the entire apparatus becomes large.

  Further, since the upper end portion of the vertical support portion 511 supports the weight of the horizontal support shaft 520 and the conveyed product W, the vertical support portion 511 or the carrier 510 as a whole vibrates due to vibration during traveling, and the like. There is a risk that the processing such as painting may be hindered, or the conveyed product W itself may be damaged.

  The present invention solves the problems of the prior art as described above. That is, the object of the present invention is to smoothly perform processing such as painting and drying, temporary stock, etc. without obstructing the traveling means. Increase the degree of freedom of the weight and size of transportable objects that can be transported in a compact structure, and the processing of the transported objects may be hindered by swinging vibrations during travel, etc. It is to provide a chain conveyor device that prevents the occurrence and smoothly conveys and processes.

  The invention according to claim 1 is a horizontal support shaft that supports a conveyed product, a carrier that cantilever-supports the horizontal support shaft and travels while being guided by a travel rail, and a chain guide provided below the travel rail. A chain conveyor apparatus having a chain guided by a rail and driven, and an engagement means for allowing the chain and the carrier to be engaged and disengaged, wherein the carrier includes a traveling carriage unit, a fall prevention roller and the horizontal support shaft. And a vertical support portion provided above the support portion, and the fall prevention roller is guided by a fall prevention rail provided above the vertical support portion, thereby solving the problem.

  In the invention according to claim 2, in addition to the structure of the chain conveyor device according to claim 1, the horizontal support shaft is rotatably supported by the vertical support portion around a horizontal axis, and A side arm portion extending in a direction away from the axial center is provided at the opposite end portion across the support side and the vertical support portion of the conveyed product, and the side arm portion is guided to a side rail provided on the side of the carrier. By having the side roller to be provided, the above-mentioned problem is further solved.

  In addition to the structure of the chain conveyor device described in claim 1 or 2, the invention according to claim 3 includes a front traveling carriage unit and a rear part in which the traveling carriage unit is connected in the traveling direction by a connecting member. The above-mentioned problem is further solved by having a traveling carriage part and the vertical support part being provided on the connecting member.

  In the invention according to claim 4, in addition to the structure of the chain conveyor device according to any one of claims 1 to 3, the horizontal support shaft is vertically supported by the clamping means on the support side of the conveyed product. The above-mentioned problem is further solved by gripping and fixing the opposite end portion across the portion.

  According to the fifth aspect of the present invention, in addition to the structure of the chain conveyor device according to any one of the first to fourth aspects, the horizontal support shaft supports the end portion on the support side of the transported object. The above-mentioned problem is further solved by having a support end clamping means that is supported by a guide, and the end support guide grips and fixes the support side end of the horizontal support shaft.

  According to the sixth aspect of the invention, in addition to the structure of the chain conveyor device according to any one of the first to fifth aspects, the horizontal support shaft can rotate about the horizontal axis of the vertical support portion. The above-mentioned problem is further solved by having a counterweight at a position away from the axis center.

  According to the seventh aspect of the invention, in addition to the configuration of the chain conveyor device according to any one of the first to sixth aspects, the horizontal support shaft can rotate about the horizontal axis in the vertical support portion. The above-described problem is further solved by having an elastic member that is supported by the elastic member and is biased in at least one of the rotational directions to apply a rotational force in the direction opposite to the rotational direction.

  The chain conveyor device of the present invention includes a horizontal support shaft that supports a conveyed product, a carrier that cantilever-supports the horizontal support shaft and travels while being guided by a travel rail, and a chain guide rail provided below the travel rail. By having a chain that is guided and driven, and an engaging means that allows the chain and the carrier to be engaged and disengaged, it is possible to carry and stop the conveyed object by cantilevering the side of the traveling means. Therefore, it is possible to smoothly perform processing such as painting and drying, temporary stock, and the like without obstructing the traveling means, and the following special effects can be achieved.

  In the chain conveyor apparatus according to the first aspect of the present invention, the carrier has a traveling carriage unit and a vertical support unit provided with a fall prevention roller above the support unit of the horizontal support shaft, and the fall prevention roller is located above the vertical support unit. Even if a moment that the vertical support part tilts to the side in the traveling direction is generated by the weight and size of the conveyed item, the anti-tip roller is guided to the anti-tip rail. Since the vertical support portion can be kept vertical, it is not necessary to make the end heavy or long in order to balance the horizontal support shaft, and the overall structure of the device can be made compact. Since the fall prevention roller is guided by the fall prevention rail and can reduce shaking due to vibrations during travel, the handling of the conveyed item may be hindered or the conveyed item itself may be damaged. It is or can be carried out smoothly conveyed and processed to prevent.

  In addition to the effect of the chain conveyor device according to claim 1, the chain conveyor device according to the second aspect of the invention has a horizontal support shaft supported by the vertical support portion so as to be rotatable about the horizontal axis, A side arm portion extending in a direction away from the axial center at the opposite end portion across the support side and the vertical support portion of the object, and the side arm portion is guided by a side rail provided on the side of the carrier By having the rollers, the side rollers can be guided by the side rails and the side arms can be moved up and down as the carrier travels, so the horizontal support shaft rotates about the horizontal axis and the posture of the conveyed product is smooth. It can be changed, and can be transported and processed more smoothly.

  In addition to the effect of the chain conveyor device according to claim 1 or 2, the chain conveyor device according to the third aspect of the present invention includes a forward traveling cart unit in which the traveling cart unit is coupled in the traveling direction by a coupling member. And a vertical support portion provided on the connecting member can reduce the swing of the vertical support portion caused in the travel direction due to vibrations during travel, etc. It is possible to prevent the processing from being hindered or to damage the transported object itself, thereby smoothly transporting and processing.

  In addition to the effects of the chain conveyor device according to any one of claims 1 to 3, the horizontal support shaft is vertically supported by the clamp means on the support side of the conveyed product. By gripping and fixing the opposite end across the section, the horizontal support shaft can be fixed when stopping the carrier, so that the carrier can be stopped accurately and the transported object at the stop position can be Since the posture is also accurately fixed, the conveyance and processing can be performed more smoothly.

  In addition to the effects of the chain conveyor device according to any one of claims 1 to 4, the horizontal support shaft supports the end portion on the support side of the conveyed product. The end support guide is supported by a guide, and the end support guide has support end clamping means for gripping and fixing the support side end of the horizontal support shaft, thereby positioning and fixing the conveyed product side end of the horizontal support shaft when stopping the carrier. Therefore, the carrier can be stopped accurately, and the posture of the conveyed product at the stop position is also more accurately fixed, so that the conveyance and processing can be performed smoothly.

  In addition to the effects of the chain conveyor device according to any one of claims 1 to 5, the horizontal support shaft can rotate about the horizontal axis in the vertical support portion. Since the counterweight is provided at a position distant from the center of the shaft and the rotational moment unbalance around the center of the horizontal support shaft can be reduced. The support shaft can be smoothly rotated, and can be transported and processed more smoothly.

  In addition to the effects of the chain conveyor device according to any one of claims 1 to 6, the horizontal support shaft can rotate about the horizontal axis in the vertical support portion. And having an elastic member that is urged in at least one of the rotational directions and applies a rotational force in a direction opposite to the rotational direction, by the urging force of the elastic member around the center of the horizontal support shaft. Since a stable neutral position can be set by generating a moment, transport and processing can be performed more smoothly.

The schematic plan view of the coating line to which the chain conveyor apparatus of this invention is applied. The partial cross section front view of the chain conveyor apparatus which is one Example of this invention. FIG. 3 is a partially enlarged view of FIG. 2. The partial cross section side view of the chain conveyor apparatus which is one Example of this invention. Operation | movement explanatory drawing of FIG. The elements on larger scale of the other part of FIG. The front view of the conventional chain conveyor apparatus. The side view of the conventional chain conveyor apparatus.

  The chain conveyor device of the present invention includes a horizontal support shaft that supports a conveyed product, a carrier that cantilever-supports the horizontal support shaft and travels while being guided by a travel rail, and a chain guide rail provided below the travel rail. In a chain conveyor apparatus having a guided and driven chain, and an engaging means for allowing the chain and the carrier to be engaged and disengaged, the carrier has a traveling carriage part and a fall prevention roller above the support part of the horizontal support shaft. The fall prevention roller is guided by the fall prevention rail provided above the vertical support part, and processing such as painting and drying, temporary stock, etc. without obstructing the traveling means etc. Smoothly increase the degree of freedom of the weight and size of the transportable object that can be transported with a compact structure, and also disturb the processing of the transported object by swinging the vibration during travel Any specific embodiment may be used as long as it has the effect of preventing the occurrence or damage of the conveyed product itself and performing smooth conveyance and processing. I do not care.

  That is, the chain conveyor device of the present invention may be applied to any line for conveying, assembling, processing, etc., and is particularly suitable for a coating line for automobile parts.

  Further, the conveyed product support portion of the horizontal support shaft of the chain conveyor apparatus of the present invention may be supported by any means / structure, such as one fixed to the support portion or one placed on a table-like support portion. In particular, when the present invention is applied to a coating line or the like of a flat plate-like automobile part having a large area, a configuration in which the transported object is fixed and supported so as to have a thin frame shape that does not hinder processing such as painting is suitable.

Below, the chain conveyor apparatus which is an Example of this invention is demonstrated based on drawing.
The coating line 200 to which the chain conveyor device of the present invention is applied is shown in FIG.
A traveling rail on which the carrier 110 travels so that the transported object W fixed on the horizontal support shaft 120 is cantilevered by the carrier 110 via the horizontal support shaft 120 and sequentially passes through each processing step. 101 is laid in a loop along each processing step.

  The coating line 200 is transferred from the carry-in unit 201 (lower left of the drawing) through the charge removal / wipe zone 202, the coating zone 203 by the coating robot 210, the liquid draining zone 204, the preheat zone 205, the UV irradiation zone 206, and the stock zone 207. The carrier 110 can be stopped by carrier stopping means 220 provided on the traveling rail 101 as necessary in each processing step, and a horizontal support shaft is provided at a place where fixing is required. Clamping means 105 for clamping both ends of 120 and support end clamping means 106 are provided.

  As shown in FIGS. 2 to 4, the chain conveyor device 100 includes a vertical support portion 111 of a carrier 110 that travels while a horizontal support shaft 120 that supports a transported product W supported by a transported product support unit 121 is guided by a travel rail 101. The chain 130 and the carrier 110, which are cantilevered so as to be rotatable about the horizontal axis and guided by the chain guide rail 102, are engaged and disengaged by an engagement / disengagement mechanism 119, thereby being transported and stopped. ing.

The engagement / disengagement mechanism 119 may have any shape and operation mechanism as long as it can operate so that the chain 130 and the carrier 110 can be engaged / disengaged.
In the present embodiment, the chain 130 is configured such that the traveling mechanism 131 provided directly below the engagement / disengagement mechanism 119 is slidably guided to the chain guide rail 102, but the entire chain 130 is connected to the chain guide rail 102. Any configuration may be used, such as one that slides directly.

  A fall prevention roller 117 is provided above the vertical support 111 and is guided by the fall prevention rail 104 provided above the vertical support 111 to prevent inclination due to weight imbalance due to cantilever support. In addition, it is possible to reduce shaking and inclination due to vibration and the like.

Further, as shown in FIG. 4, the traveling cart unit 112 of the carrier 110 includes a front traveling cart unit 113 and a rear traveling cart unit 114 connected in the traveling direction by a connecting member 118, and each guides to the traveling rail 101. The traveling roller 116 is configured to be able to travel.
The vertical support portion 111 is provided in the connecting member 118 that extends in the traveling direction and is supported by the front traveling carriage unit 113 and the rear traveling carriage unit 114, so that the vertical support unit 111 is stable in the front-rear direction and is swayed by vibration or the like. And inclination can be reduced.

  The horizontal support shaft 120 is supported by the vertical support portion 111 so as to be rotatable about the horizontal axis, and extends in a direction away from the shaft center at the opposite end with the conveyed product support portion 121 and the vertical support portion 111 interposed therebetween. An arm portion 122 is provided.

  A side roller 125 is provided at the tip of the side arm portion 112 away from the axial center, and the horizontal support shaft 120 is linked to the travel of the carrier 110 by being guided by the side rail 103 provided on the side. The posture of the conveyed product W is changed by rotating around the horizontal axis.

  In addition, a counterweight 123 is provided at a position away from the axis center of the horizontal support shaft 120 to smoothly reduce the rotational moment unbalance around the axis of the horizontal support shaft 120 when the conveyed product W is supported. In addition to being configured to be able to rotate, an elastic member 124 is provided between the vertical support portion 111 and the vibration around the center of the horizontal support shaft 120 is reduced by the urging force so that it can be smoothly conveyed and processed. It is configured.

  As shown in FIG. 5, the change of the posture of the conveyed product W is supported horizontally by the side roller 125 provided at the tip of the side arm portion 112 being guided by the side rail 103 in conjunction with the traveling of the carrier 110. This is performed by swinging in the vertical direction about the axis of the axis 120 and rotating around the axis of the horizontal support axis 120.

At this time, since the elastic member 124 applies an urging force, the side rollers 125 are prevented from being separated from the side rails 103 and the horizontal support shaft 120 being excessively rotated or vibrating.
In this embodiment, the elastic member 124 is a tension spring provided between the counterweight 123 and the vertical support portion 111. However, the elastic member 124 may be provided in another portion, and other urging means such as a torsion spring. It may be.

  Clamping means 105 is provided at an appropriate position on the travel path so as to grip and fix the opposite end of the horizontal support shaft 120 with the transported object support part 121 and the vertical support part 111 interposed therebetween. The posture of the object W is accurately fixed and various processes can be performed smoothly.

Further, as shown in FIGS. 1 and 6, an end support guide 140 for guiding the end of the horizontal support shaft 120 on the side of the transported object support 121 is provided at an appropriate position on the travel route. The horizontal support shaft 120 supported in a cantilever manner is configured to be transported more stably, and the support end clamping means 106 is disposed at an appropriate position of the end support guide 140 so that the transport support portion of the horizontal support shaft 120 is supported. 121 is provided so as to grip and fix the end portion on the 121 side, and the posture of the conveyed product W at the stop position can be more accurately fixed to perform various processes smoothly.
The clamp means 105 and the support end clamp means 106 are gripped and released by an air cylinder 107, respectively.

The operation | movement in the coating line 200 of the chain conveyor apparatus 100 which is an Example of this invention comprised as mentioned above is demonstrated.
Clamp means 105 and support end clamp means 106 are arranged in the carry-in portion 201 (lower left in the drawing of FIG. 1), and both ends of the horizontal support shaft 120 of the carrier 110 stopped by the carrier stop means 220 are held and fixed. The conveyed product W is attached to the conveyed product support unit 121.

Next, the carrier 110 cantilever-supports the transported object W and is transported to the static elimination / wipe zone 202, and neutralization / wipe is performed as a pretreatment for coating the transported object W.
In the static elimination / wipe zone 202, carrier stopping means 220 is arranged at an appropriate position for processing.

Next, the carrier 110 cantilever-supports the conveyed product W and is conveyed to the coating zone 203, and the coating robot 210 performs coating on the conveyed item W.
The clamping means 105 and the support end clamping means 106 are arranged at the coating position, and both ends of the horizontal support shaft 120 of the carrier 110 stopped by the carrier stopping means 220 are held and fixed, and the positions of the coating robot 210 and the transported object W are fixed. Accurate painting can be performed by fixing the relationship.

Next, the carrier 110 cantileverally supports the conveyed product W and is transported to the liquid draining zone 204, where liquid draining is performed.
In the liquid draining zone 204, the carrier stop means 220 is arranged at an appropriate position so that the excess paint is removed from the transported object W for a period of time, and transport and stop are repeated.

Next, the carrier 110 cantilever-supports the conveyed product W and is conveyed to the preheat zone 205. After the coated conveyed item W is heated, the carrier 110 is conveyed to the UV irradiation zone 206 to perform a coating fixing process.
When transported from the preheat zone 205 to the UV irradiation zone 206, the side roller 125 is guided by the side rail 103, so that the horizontal support shaft 120 rotates about the horizontal axis in conjunction with the traveling of the carrier 110. The posture of the conveyed product W is changed to a posture suitable for UV irradiation.

Next, the carrier 110 cantilever-supports the transported object W and is transported to the stock zone 207. After the transported objects W having been coated are sequentially stocked, they are transported one by one to the unloading unit 208 to support the transported object. The conveyed product W is removed from the section 121.
Clamping means 105 and support end clamping means 106 are disposed in the carry-out portion 208, and both ends of the horizontal support shaft 120 of the carrier 110 stopped by the carrier stop means 220 are held and fixed so that the carry-out operation can be performed smoothly. It is configured.

  As described above, according to the chain conveyor apparatus of the present invention, the weight of the transportable object that can be smoothly transported with a compact structure, such as painting and drying, and temporary stock without any obstacles to the traveling means. In addition to increasing the degree of freedom of size and size, it can be smoothly transported and processed by preventing vibrations during travel, etc., from affecting the processing of the conveyed product or damaging the conveyed product itself. The effect is enormous.

DESCRIPTION OF SYMBOLS 100,500 ... Chain conveyor apparatus 101,501 ... Traveling rail 102 ... Chain guide rail 103 ... Side rail 104 ... Fall prevention rail 105 ... Clamp means 106 ... Support end clamp Means 110, 510... Carrier 111, 511... Vertical support portion 112, 512... Traveling cart portion 113 .. front traveling cart portion 114 .. rear traveling cart portion 115. 516 ... Traveling roller 117 ... Fall prevention roller 517 ... Traveling guide roller 118 ... Connection member 119 ... Engagement / disengagement mechanism 120, 520 ... Horizontal support shaft 121, 521 ... Conveyance Object support part 122 ... side arm part 522 ... support shaft rotating sprocket 123 ... counterweight 523 .... Positioning cam 124 ... Elastic member 125 ... Side rollers 130, 530 ... Chain 140 ... End support guide 200 ... Paint line 201 ... Carry-in part 202 ... Static elimination Wipe zone 203 ・ ・ ・ Paint zone 204 ・ ・ ・ Liquid drain zone 205 ・ ・ ・ Preheat zone 206 ・ ・ ・ UV irradiation zone 207 ・ ・ ・ Stock zone 208 ・ ・ ・ Transport unit 210 ・ ・ ・ Coating robot 220 ・ ・ ・Carrier stop means W ... Conveyed material

Claims (7)

A horizontal support shaft that supports a conveyed product, a carrier that cantilever-supports the horizontal support shaft and travels while being guided by a traveling rail, and a chain that is guided and driven by a chain guide rail provided below the traveling rail. And a chain conveyor device having an engagement means that allows the chain and the carrier to be engaged and disengaged,
The carrier has a traveling carriage part and a vertical support part provided with a fall prevention roller above the support part of the horizontal support shaft,
The chain conveyor apparatus, wherein the fall prevention roller is guided by a fall prevention rail provided above the vertical support portion. The horizontal support shaft is supported by the vertical support portion so as to be rotatable about a horizontal axis, and extends in a direction away from the shaft center at the opposite end portion across the support side and the vertical support portion of the transported object. Having an arm part,
The chain conveyor apparatus according to claim 1, wherein the side arm portion includes a side roller guided by a side rail provided on a side of the carrier. The traveling carriage unit includes a front traveling carriage unit and a rear traveling carriage unit that are connected in a traveling direction by a connecting member;
The chain conveyor apparatus according to claim 1, wherein the vertical support portion is provided on the connecting member.   The chain according to any one of claims 1 to 3, wherein the horizontal support shaft is clamped and fixed at the opposite end by clamping means between the support side and the vertical support part of the conveyed product. Conveyor device. The horizontal support shaft is supported by an end support guide at a support side end of the conveyed product,
The chain conveyor apparatus according to any one of claims 1 to 4, wherein the end support guide includes support end clamping means for gripping and fixing a support side end of the horizontal support shaft.   6. The horizontal support shaft is supported by the vertical support portion so as to be rotatable about a horizontal axis, and has a counterweight at a position away from the center of the shaft. The chain conveyor device described in 1.   The horizontal support shaft is supported by the vertical support portion so as to be rotatable about the horizontal axis, and is provided with an elastic member that is biased in at least one of the rotation directions and applies a rotational force in a direction opposite to the rotation direction. The chain conveyor device according to claim 1, wherein the chain conveyor device is provided.

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