JPH0565927U - Lubrication device for chain conveyor - Google Patents

Abstract

(57) [Summary] [Purpose] An appropriate amount of oil can be accurately fed to the lubrication points of the chain conveyor only by air pressure, the structure is simple, the safety is high, and it is compatible with various chain conveyors. To be able to refuel. [Structure] A nozzle 14 for ejecting oil guided from an oil source toward an oil supply point of a chain conveyor 4 by air guided through an air passage 11, and a nozzle 14 arranged in the air passage 11 upstream of the nozzle 14. In addition, a mechanical valve 17 that brings the air passage 11 into a communication state or a non-communication state by contact or non-contact of the contact 17a with the chain conveyor 4, and the nozzle of the air passage 11 and the mechanical valve 17. The air operated that is disposed between the two and is changed by the air supplied through the mechanical valve 17 in the communication state from the communication state to the non-communication state when a predetermined time has elapsed after the air was supplied. And a valve 18.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an oil supply device for a chain conveyor, which supplies a predetermined amount of oil to an oil supply point of a chain conveyor.

[0002]

[Prior Art]

 Generally, chain conveyors are used in various industrial fields in various forms as transportation means.

For example, in an automobile manufacturing process, as shown in FIGS. 6 and 7, a conveyor rail 1 having an I-shaped cross section formed in an endless shape in a horizontal direction is provided on a ceiling portion, and a conveyor rail 1 is manufactured during the manufacturing process. A trolley 2 on which a vehicle body or the like is placed and conveyed is suspended and movably suspended by placing a pair of wheels 3 and 3 provided on the left and right of the upper end thereof on grooves on the left and right sides of the conveyance rail 1. By engaging the trolley 2 with the endless chain conveyor 4 arranged immediately below the transport rail 1 and moving the chain conveyor 4 by an appropriate drive means, the trolley 2 is transported to the transport rail 1. The vehicle is run along with it, and certain processing is applied to the vehicle body.

As shown in FIG. 8, the chain conveyor 4 includes one oval single horizontal link 5 and two upper and lower horizontal links 6 having small oval holes 6a, 6a at both ends. , 6 are alternately connected by a pin 7 having heads at the upper and lower ends to prevent them from coming off, thereby forming an endless shape. The chain conveyor 4 and the trolley 2 are engaged with each other by the stays 8 for supporting the pair of wheels 3, 3 of the trolley 2 and the neck portion 9 extending downward from the stays 8 and the elliptical hole 5a of the individual horizontal link 5. It is done by penetrating.

Conventionally, lubricating oil has been jetted and supplied to the chain conveyor 4 from a nozzle (not shown) toward an oiling point composed of frictional portions between the links 5 and 6 and the pin 7. This is because if the chain conveyor 4 is driven in a non-lubricating state, the frictional part will be greatly worn out, which will cause problems in transport, the chain conveyor 4 will have to be replaced frequently, and loud noise will be generated. This is to prevent this.

[0006]

[Problems to be solved by the device]

 In the conventional oil supply device, when the chain conveyor 4 passes in front of the fixed nozzle, a touch sensor and a nozzle drive mechanism are provided in order to accurately supply oil to a lubrication point composed of the friction portion. I was trying to interlock. That is, when the touch sensor is turned on by the link 5 or 6 of the chain conveyor 4 or the sprocket of the drive mechanism that drives the chain conveyor 4, the nozzle drive mechanism (for example, the opening / closing valve) is activated, Lubricating oil is supplied from the nozzle to the lubrication point of the chain conveyor 4.

However, in this conventional oil supply device, since the lubricating oil is continuously supplied while the touch sensor is ON, the moving speed of the chain conveyor 4 changes or the chain conveyor 4 changes. However, if the ON time of the touch sensor changes due to changes in the size of No. 4 and the size of the sprocket, the supply amount of lubricating oil also changes, making it difficult to obtain an appropriate supply amount. Also, if the chain conveyor 4 or the sprocket of its drive mechanism stops while the touch sensor is turned on for some reason, the supply of lubricating oil from the nozzle is continued and the lubricating oil drains. This caused various inconveniences such as adhesion to conveyed products and waste of lubricating oil.

Therefore, conventionally, an on-off valve that drives a nozzle is electromagnetically driven so that the opening time of the nozzle is turned off after a predetermined time has elapsed after the touch sensor was turned on. It was

With this, it becomes possible to control the supply amount of the lubricating oil from the nozzle, but it is necessary to additionally provide a device for electromagnetically driving the opening / closing valve, and moreover, the device is interlocked with the touch sensor. However, there is an inconvenience that the structure is complicated and the cost is high. Further, since a flammable solvent is used in the manufacturing process of coating the conveyed product, it is impossible to install the electrically controlled drive device having the above configuration in the process. .. In this case, it is possible to eliminate the risk of fire by installing the electric control part outside the painting room, but the distance between the on-off valve and the nozzle becomes long, and the responsiveness deteriorates and the lubricating oil supply is reduced. There is a disadvantage that the amount of oil cannot be properly controlled.

The present invention has been made in view of these points, and it is possible to accurately supply an appropriate amount of oil to the oil supply points of the chain conveyor only by air pressure, and the structure is simple and the safety is high. It is an object of the present invention to provide an oil supply device for a chain conveyor, which is highly expensive and capable of supplying oil to various chain conveyors.

[0011]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, an oil supply device for a chain conveyor according to the present invention comprises a nozzle for ejecting oil introduced from an oil source toward air supply points of a chain conveyor by air introduced through an air passage, and the air passage. And a mechanical valve that is disposed upstream of the nozzle and that makes the air flow passages in a communication state and a non-communication state by contact and non-contact of a contact with the chain conveyor. The air is provided between the nozzle and the mechanical valve, and the air supplied through the mechanical valve in the communication state changes from the communication state to the non-communication state when a certain time has elapsed after the air was supplied. And an air operated valve that can be changed.

[0012]

[Action]

 According to the present invention, when the contactor comes into contact with the chain conveyor, the mechanical valve is brought into communication, and air is supplied to the air-operated valve and the nozzle on the downstream side in order, and the air is directed from the nozzle to the lubrication point of the chain conveyor. Oil is supplied. Then, when a predetermined time has elapsed after the air was supplied, the air operated valve is changed from the communication state to the non-communication state, the oil supply from the nozzle is stopped, and a predetermined amount of oil is supplied.

[0013]

【Example】

 An embodiment of the present invention will be described below with reference to FIGS.

1 to 5 show an embodiment of the present invention, FIG. 1 shows a connected state of each component, and FIGS. 2 to 5 show a lubricator for a chain conveyor equipped with each component of FIG. Is shown.

First, the connection state of each component will be described with reference to FIG.

In FIG. 1, the thin solid line indicates the air flow passage 11, and the thick solid line indicates the oil flow passage 12. A one-touch type pipe joint 13 connected to an air source (not shown) provided outside the apparatus is provided on the most upstream side (left end in FIG. 1) of the air flow path 11. Further, two nozzles 14, 14 are connected in parallel on the most downstream side of the air flow path 11 (right end in FIG. 1). Then, in the air flow path 11, in order from the upstream side to the downstream side, the flip toggle 15 for turning on and off the entire apparatus, the regulator 16 for determining the air pressure in the system, and the chain conveyor 4 are contacted. A mechanical valve 17 that is turned on and an air operate valve 18 that determines an air supply time to each nozzle 14 are provided. Further, from the air flow passage 11 between the regulator 16 and the mechanical valve 17, air of a predetermined pressure is fed into the oil tank 19 through the branch air flow passage 11a. Lubricating oil 20 is fed from the oil tank 19 to the nozzles 14 through the oil passage 12.

Explaining each constituent part further, the nozzle 14 is formed so as to inject the lubricating oil 20 guided through the oil passage 12 when air of a predetermined pressure is supplied from the air passage 11. The flip toggle 15 shifts the air flow path 11 from the non-communication state to the communication state when the manual switch 15a is turned on, and shifts the air flow path 11 from the communication state to the non-communication state when the manual switch 15a is turned off. Is formed in. The regulator 16 has a check valve 21 and is formed so as to set the air pressure in the system on the downstream side to a predetermined value by using the pressure adjusting spring 16a. The value of the air pressure on the downstream side is a value at which the lubricating oil 20 in the oil tank 19 can be pumped to the nozzle 14 and the lubricating oil 20 can be satisfactorily injected from the nozzle 14. This air pressure can be monitored by a pressure gauge 22 attached to the regulator 16. The mechanical valve 17 has a contactor 17a, and when the contactor 17a comes into contact with the individual horizontal link 5 of the chain conveyor 4 and is pushed in, the air flow passage 11 shifts from the non-communication state to the communication state. When the contact 17a is separated from the independent horizontal link 5 of the chain conveyor 4 and returns to its original position, the return spring 17b causes the air flow path 11 to shift from the communication state to the non-communication state. The air-operated valve 18 has a speed controller 23 that is operated by air. Until the speed controller 23 operates, the return spring 18a keeps the air flow path 11 in communication with the speed controller 23. Is operated so as to move the air flow path 11 from the communication state to the non-communication state when a predetermined time has elapsed after receiving the supply of the air sent through the mechanical valve 17. A branch air flow path 11b is branched from the upstream side of the air operate valve 18 of the air flow path 11, and an end portion of the branch air flow path 11b is connected to an operating point 18b on the opposite side of the return spring 18a of the air operate valve 18 to the return spring 18a. It is designed to exert opposing air pressure. The speed controller 23 is arranged in the middle of the branch air flow path 11b, and connects the adjustment orifice 23a for variably adjusting the air flow rate toward the operating point 18b of the air operated valve 18 and the check valve 23b in parallel. Has been formed.

Next, a specific configuration of this embodiment will be described with reference to FIGS. 2 to 5.

The chain conveyor oil supply device of the present embodiment is provided with the constituent parts shown in FIG. 1 inside and outside the case 25 of the main body 24. As shown in FIG. 3, the main body 24 is formed to have a lateral width capable of being placed on the transport rail 1, and each mounting plate formed so as to project from the lower portion of both ends of the main body 24 in the longitudinal direction of the transport rail 1. The parts 26, 26 are tightly fixed to the transport rail 1 with a vise 27. Inside the case 25, a flip toggle 15, a regulator 16, an air operated valve 18, and a speed controller 23 are arranged respectively. The pipe joint 13 at the upstream end of the air flow passage 11 is fixed to the left side surface (left side in FIG. 2) of the case 25, and further, the manual switch 15a of the flip toggle 15 and the adjusting orifice 23a of the speed controller 23 are provided. The adjusting knobs 23c are installed so as to be exposed to the outside. Further, a pressure adjusting knob 16b for adjusting the strength of the pressure adjusting spring 16a of the regulator 16 and a pressure gauge 22 are installed on the upper surface of the case 25 so as to be exposed. The oil tank 19 is mounted on the right half portion of the main body 24, and the branch air flow passage 11a is connected to the one-touch type pipe joints 28, 28 fixed to the oil tank 19 and the upper surface of the case 25. Air having a predetermined pressure is supplied inside. A rod support block 29 is fixed to the lower part of the front surface of the case 25, and a valve support rod 31 is passed through an upper and lower through hole 30 at the leftmost portion of the case 25 and is tightly fixed with a tightening screw 32. A valve mounting plate 33 is fixed to the lower end of the valve supporting rod 31 by a nut 34, and the mechanical valve 17 is fixed to the lower surface of the valve mounting plate 33. The contactor 17a of the mechanical valve 17 is positioned and set at a position where it comes into contact with the independent horizontal link 5 of the chain conveyor 4. The inlet / outlet ports of the mechanical valve 17 are connected to the inlet / outlet ports formed in the lower front portion of the case 25 by air pipes 35, 36 forming the air flow passage 11, respectively. On the right side of the rod support block 29, four vertical through holes 38, 38 for mounting the front nozzle support rod 37 are formed at predetermined intervals. A rod support block 40 for supporting the nozzle support rod 39 on the back side is fixed to the back side of the case 25, and one vertical through hole 41 is formed. As shown in FIG. 5, one block 29 is provided with a plurality of vertical through holes 38 so that the nozzles 14 and 14 on the front side and the rear side can be spaced from each other in accordance with the change in size of the chain conveyor 4. This is to change and install. Each nozzle support rod 37, 39 is fixed to each block 29, 40 with a tightening screw 32. Further, the nozzle 14 is fixed to the lower ends of the rods 37 and 39 with appropriate tightening means. As shown in FIG. 5, each nozzle 14 has its discharge port 14a when the contactor 17a of the mechanical valve 17 contacts the single horizontal link 5 of the chain conveyor 4 to eject the lubricating oil 20. It is installed at a position where it can be accurately ejected at the refueling point. On the front side and the back side of the case 25, there are air outlets 42, 42 that are the downstream end of the air flow passage 11 and an oil flow that is the downstream end of the oil flow passage 12 connected to the oil tank 19, respectively. The outlets 43, 43 are arranged side by side. The air inlet 14b of each nozzle 14 and each air outlet 42 are connected by an air pipe 44, and the oil inlet 14c and each oil outlet 43 of each nozzle 14 are connected by an oil pipe 45. There is. The oil flow path 12 is led out from the upper end portion of the oil tank 19 with an oil pipe 46, once enters the case 25, and then branched and connected to each oil outlet port 43. A one-touch type pipe joint may be used to connect the ends of the air pipes 35, 36 and 44, and a stake-in type pipe joint may be used to connect the ends of the oil pipes 45 and 46. ..

Next, the operation of this embodiment will be described.

First, the apparatus is mounted on the transport rail 1 with the main body 24, the nozzles 14 and the contactors 17 a of the mechanical valves 17 are respectively positioned at proper positions, and the vise 27 secures and fixes them. Then, an air source such as a compressor installed outdoors is connected to the pipe joint 13 by an appropriate air pipe (not shown). Further, the oil tank 19 is filled with a predetermined amount of the lubricating oil 20 through an upper filling port having the lid 19a.

After the apparatus is installed as described above, the manual switch 15a of the flip toggle 15 is turned on. As a result, the flip toggle 15 is changed from the non-communication state to the communication state, air is guided to the inside of the oil tank 19 and the mechanical valve 17 through the regulator 16, and the inside of the air flow path 11 and the inside of the oil tank 19 are controlled by the regulator 16 to a predetermined level. Maintained at air pressure.

After that, when the chain conveyor 4 is operated, the individual horizontal link 5 comes into contact with the contact 17a of the mechanical valve 17, and the mechanical valve 17 changes from the non-communication state to the communication state. As a result, air of a predetermined pressure passes through the air operate valve 18 and is guided to each nozzle 14, and the lubricating oil 20 guided through the oil flow path 12 is injected to each lubrication point of the chain conveyor 4. Then, after a predetermined time set in advance, the pressure of the air introduced to the operating point 18b of the air operate valve 18 through the branch air flow passage 11b and the adjusting orifice 23a of the speed controller 23 reaches a predetermined value. Then, the air operated valve 18 is moved against the elastic force of the return spring 18a to change from the communication state to the non-communication state, and the ejection of the lubricating oil 20 from each nozzle 14 is stopped.

As a result, even if the mechanical valve 17 is held in the communicating state, a predetermined amount of the lubricating oil 20 is reliably supplied to each oil supply location of the chain conveyor 4.

After that, when the movement of the chain conveyor 4 progresses and the contactor 17a of the mechanical valve 17 separates from the independent horizontal link 5, the mechanical force of the return spring 17b causes the mechanical valve 17 to change from the communication state to the non-communication state. Then, the air operated valve 18 is pressed toward the operating point 18b by the elastic force of the return spring 18a, the air in the branch air flow passage 11b is returned to the air flow passage 11 through the check valve 23b, and finally the air operated valve 18 is returned. 18 goes from the communication state to the non-communication state.

This oil supply operation is repeated as the chain conveyor 4 moves.

As described above, according to this embodiment, it is possible to accurately supply the appropriate amount of the lubricating oil 20 to the lubrication location of the chain conveyor 4 only by the air pressure. Therefore, even if the chain conveyor 4 is stopped when the contactor 17a of the mechanical valve 17 is in contact with the chain conveyor 4, the lubricating oil 20 is supplied from the nozzles 14 in a predetermined amount, and the lubricating oil 20 There is no discharge of water. In addition, since it does not use an electrical control system, it does not cause a fire, it is extremely safe and can be installed in a painting room filled with a flammable solvent. Moreover, since the installation position of one of the two nozzles 14, 14 is variably formed, even if the size of the chain conveyor 4 is changed, it is extremely easy to change the installation position of the nozzle 14 to an appropriate position. It is possible to deal with it easily. Further, according to the present embodiment, since the entire apparatus is integrally formed with the main body 24, the overall configuration becomes compact, the movement is easy, and the installation work is easy.

Further, only one nozzle 14 may be installed.

Further, the present invention is not limited to the above-mentioned embodiment, but can be modified as necessary.

[0030]

[Effect of the device]

 As described above, the lubrication device for the chain conveyor of the present invention is configured and operates, so that it is possible to accurately supply a proper amount of oil to the lubrication points of the chain conveyor only by air pressure, and the configuration is simple. In addition, the safety is high, and it is possible to perform oil supply corresponding to various chain conveyors.

[Brief description of drawings]

FIG. 1 is a system diagram showing one embodiment of an oil supply device for a chain conveyor according to the present invention.

FIG. 2 is a front view showing an embodiment of a lubrication device for a chain conveyor according to the present invention.

FIG. 3 is a plan view of FIG.

FIG. 4 is a left side view of FIG.

FIG. 5 is a plan view showing a positional relationship between nozzles and a chain conveyor.

FIG. 6 is a perspective view showing an example of a chain conveyor.

FIG. 7 is a sectional view taken along line VII-VII of FIG.

FIG. 8 is an exploded perspective view showing a main part of a chain conveyor.

[Explanation of symbols]

 1 Transport Rail 2 Trolley 4 Chain Conveyor 5 Single Horizontal Link 11 Air Flow Path 12 Oil Flow Path 14 Nozzle 17 Mechanical Valve 17a Contact 18 Air Operated Valve 19 Oil Tank 20 Lubricating Oil 23 Speed Controller

Claims (2)

[Scope of utility model registration request] 1. A nozzle for ejecting oil introduced from an oil source toward an oil supply point of a chain conveyor by air introduced through an air flow path, and a nozzle provided in the air flow path upstream of the nozzle. A contact of the contactor with respect to the chain conveyor, a mechanical valve for connecting and disconnecting the air flow path by non-contact, and a mechanical valve for placing the air flow path between the nozzle and the mechanical valve An air-operated valve that is changed from a communication state to a non-communication state when a predetermined time has elapsed after the air is supplied by the air supplied through the mechanical valve in the communication state. Oil supply device for conveyors. 2. A single nozzle or a plurality of nozzles whose relative positional relationship is changeable are arranged.
An oil supply device for a chain conveyor according to item 1.