JPH0682020U - Drive device for accumulation conveyor - Google Patents

Abstract

(57) [Abstract] [Purpose] To double the average breaking strength of the roller chain that rotates the accumulator roller and guide the drive of this roller chain in a stable state. [Structure] A sprocket 21 mounted on a rotary shaft 5T that rotates an accumulator roller 5 has two rows of roller chains 22A,
The two-row roller chains 22A, 22B are guided by the upper and lower two-row chain guides 23, 24 fitted in the fitting grooves 23T, 24T provided in the frame 4B, while being rotated by being engaged with 22B.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 INDUSTRIAL APPLICABILITY The present invention is used in the technical field of an accumulator used in an assembly and production line of various electric and mechanical machines, and more specifically, it relates to a drive device suitable for use in this accumulator. is there.

[0002]

[Prior art]

 In a conventional general accumulator, many rotating shafts of accumulating rollers arranged in parallel in the longitudinal direction are inserted into shaft holes formed in the left and right frames respectively, and sprockets attached to these rotating shafts are used as driving chains. Each accumulator roller is rotated by being meshed with each other, and each accumulator roller is supported between the left and right frames and its pitch interval cannot be adjusted. As disclosed in Japanese Patent Publication No. 46405/1994, the rotation distance of the accumulator roller can be variably adjusted by arranging it so that the rotary shaft of the accumulator roller can be attached to the left and right frames by moving in the conveying direction. Therefore, we succeeded in developing an accumulator that can correct the error of the pitch interval and the parallel arrangement of the accumulators. It was.

[0003]

[Problems to be solved by the device]

 However, as shown in FIG. 4, the above-mentioned accumulator roller has a structure in which the sprocket P mounted on the rotating shaft S of the accumulator roller supported by the frame Z is meshed with the roller chain H of the single row structure to rotate. Due to the lack of mechanical strength, the single-row roller chain H may extend and interfere with the engagement with the sprocket P when used for a long period of time, and the pitch interval of the accumulator rollers may be adjusted incorrectly. When the load increases, the single-row roller chain H may be broken and the transportation may be interrupted.

Further, since the chain guide X that supports the single-row roller chain H is also formed in a single-row structure fitted to the projecting piece Y on the frame side as shown in FIG. There was a problem that the operation could not be guided in a stable state, which adversely affected the rotation of the accumulator roller.

Therefore, the technical problem of the present invention is to double the average breaking strength of the roller chain that rotates the accumulator roller, smoothly guide the driving of the roller chain, and stably convey and rotate the accumulative roller. Is.

[0006]

[Means for Solving the Problems]

 Means taken in the present invention to solve the above technical problems are as follows. An accumulator configured such that a large number of accumulator rollers, which are driven and rotated by meshing of a driving chain and a sprocket, are arranged side by side at intervals in the longitudinal direction, and the pitch intervals of these accumulator rollers can be variably adjusted. And

(1) The driving chain is a two-row roller chain in which the roller chains are connected in two rows. (2) A fitting groove is formed in a longitudinal direction in a frame that supports each of the accumulation rollers, and a two-row chain guide that supports the two-row roller chain is fitted into the fitting groove.

[0008]

[Action]

 The above means operate as follows. According to the means described in (1) above, since the two-row roller chain is used as the roller chain that meshes with the sprockets attached to the rotary shaft of the accumulator roller to transmit the driving force, the average breaking strength is doubled for a long time. Even if it is used, the chain will not extend and it will not interfere with meshing with the sprocket, and even if the load increases due to incorrect adjustment of the accumulator pitch interval, it will break and the conveyance will be interrupted. This makes it possible to carry the product smoothly without worrying about it.

According to the means described in (2) above, the two-row roller chain can be guided in a stable state by the two-row chain guide, and the two-row chain guide is installed in the frame. Since it is fitted in the fitting groove provided, it does not move in the guide or disengage from the frame and does not affect the guide of the two-row roller chain, and it smoothly guides the drive of the two-row roller chain. To enable that. As described above, the technical problems described above can be solved by the above means, and the problems of the conventional technology can be solved.

[0010]

【Example】

 Hereinafter, preferred embodiments of an accumulator drive device according to the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a perspective view showing the overall structure of an accumulator equipped with a drive device according to the present invention, in which a large number of accumulator rollers 5 are freely rotatable on an upper plate 2 of a frame stand 1. The left and right frame bodies 3 and 4 which are supported in the vertical direction are arranged side by side in the longitudinal direction.

The frame bodies 3 and 4 made of aluminum metal or the like are divided into two upper and lower frame frames 3A and 3B and 4A and 4B as shown in FIGS. 1 and 2, and The upper and lower frame frames 3A, 3B and 4A, 4B are attached to the lower frame by mounting bolts 6 and 7 inserted through bolt holes formed in the lower outer surface of the upper frame frames 3A and 4A. -By screwing with nuts 6a, 7a fitted in nut rails 8, 9 recessed in the outer longitudinal direction of the frame frames 3B, 4B, the structure is integrated as shown in the figure. .

Reference numerals 10a and 10b denote insertion grooves notched on the inner upper and lower joint edges of the left frame frames 3A and 3B, respectively, and these insertion grooves 10a and 10b arranged along the longitudinal direction of the frame body 3 are provided. By combining them, an insertion port for inserting one end 5Ta of the rotary shaft 5T to which the accumulator roller 5 is attached is formed. Reference numeral 11 is a substantially L-shaped bracket that rotatably supports a sleeve 12 portion attached to one end 5Ta of the rotary shaft 5T inserted through the insertion opening. Reference numeral 13 is a bolt for fixing the bracket, and 13a. Is a nut for the bolt 13 that is movably accommodated in a nut rail 14 that is recessed in the upper surface of the lower frame frame 3B. The nut rail 14 extends along the longitudinal direction of the frame frame 3B. It has been set up.

Reference numeral 11a denotes an upper end portion of the L-shaped bracket 11, which is formed on the inner wall of the upper frame frame 3A when fixing the upper and lower frame frames 3A and 3B. The engaging recess 15 is engaged. In addition, the bottom convex portion 16 of the upper frame frame 3A is also engaged in the engaging concave portion 17 of the lower frame frame 3B, and the upper and lower frame frames 3A and 3B are fixed by the bolt 6 and the nut 6a. To further strengthen. Reference numerals 18a and 18b are nut rails for accommodating bolt nuts (neither shown) for fixing the lower frame frame 3B to the upper plate 2 side of the frame stand 1.

Next, reference numeral 20 denotes an insertion opening that is relatively large in the inner longitudinal direction of the right frame body 4 constituted by the upper and lower frame frames 4A and 4B. -The other end 5Tb of the rotary shaft 5T to which the muller 5 is attached is inserted. Reference numeral 21 denotes a sprocket attached to the other end 5Tb. The forward path of the two-row driving roller chains 22A and 22B installed inside the right frame body 4 engages with the sprocket 21, and the accumulator roller 5 It is designed to rotate and convey.

Reference numeral 25 is an L-shaped bracket that rotatably supports the other end 5Tb of the rotary shaft 5T, 26 is a bolt for fixing the bracket, and 26a is a nut rail recessed in the upper surface of the lower frame frame 4B. In the nut for the bolt 26, which is movably accommodated in 27, the nut rail 27 is provided along the longitudinal direction of the frame frame 4B.

Further, 28 is a cover attached to the inside of the right frame body 4 so as to close the insertion opening 20, 29 is a cover attaching screw, and 31 is a screw housed in the nut rail 30. The lower end of the cover 28 whose upper end side is fixed to the upper frame frame 4A with screws 29 and nuts 31 is a groove formed inside the lower frame frame 4B. It is inserted. In addition, when fixing the upper and lower frame frames 4A and 4B, the convex portion 33 protruding from the lower frame frame 4B is fitted into the groove 34 formed in the bottom surface of the upper frame frame 4A. Further, the convex portion 35 formed on the upper frame frame 4A is fitted into the concave portion 36 on the side of the lower frame frame 4B, and the upper and lower frame frames 4A and 4B by the bolt 7 and the nut 7a are inserted. Make the fixing stronger. 37A and 37B are nut rails for accommodating bolt nuts (neither shown) for fixing the lower frame frame 4B to the upper plate 2 side of the frame stand 1.

Next, in FIG. 2 described above and in FIG. 3 in which the main part of the present invention is enlarged, 23 is fitted in a fitting groove 23T recessed in the upper surface longitudinal direction of the lower frame frame 4B. In the upper two-row chain guide, the two guide protrusions 23A and 23B projectingly provided on the upper surface of the guide 23 form a mechanism for supporting the forward path of the above-described two-row roller chains 22A and 22B from below. There is. Further, reference numeral 24 is a lower two-row chain guide fitted in a fitting groove 24T which is recessed in the longitudinal direction of the inner bottom surface of the lower frame frame 4B, and guide pieces 24A and 24B projecting on the upper surfaces on both sides of the guide 24 are provided. It is designed to support both the left and right sides of the return path of the two-row roller chains 22A and 22B.

Since the drive device for the accumulator according to the present invention is configured as described above, the rotating shaft 5T of each accumulator roller 5 can be freely rotated by the brackets 11 and 25 mounted in the left and right frame bodies 3 and 4. The mounting positions of the fixing bolts 13 and 26 which support the brackets 11 and 25 and are fixed to each other are moved along the nut rails 14 and 27, and screwed with the nuts 13a and 26a at the moving positions. If the state is tightened, the accumulation roller 5 can be fixed at an arbitrary position moved along the frame bodies 3 and 4, so that the pitch intervals of the rollers 5 can be freely adjusted in a wide and narrow manner.

Further, in the present invention, the sprocket 21 mounted on the rotary shafts 5T is engaged with the two-row roller chains 22A and 22B, and the two accumulator rollers 5 ... Since the rollers rotate in accordance with the operation of the roller chains 22A and 22B, the average breaking strength of the chain is doubled, and each accumulator roller 5 can be stably conveyed and rotated even if some overload is applied.

Further, in the present invention, the above-mentioned two-row roller chains 22A, 22B are operated by their forward and backward paths guided by the upper and lower two-row chain guides 23, 24, and the upper and lower two-row chain guides 23, 24 are guided. Since both of 24 are fitted in the fitting grooves 23T and 24T provided on the upper and lower sides of the lower frame frame 4B and are stable, the two-row roller chains 22A and 22B are fitted to the upper and lower two-row chain guides 23 and 24, respectively. It is guided and operates smoothly, and each accumulator roller 5 can be accurately conveyed and rotated.

[0021]

[Effect of device]

 As described above, according to the drive device for the accumulator of the present invention, the accumulator rollers arranged in parallel can be interlocked with each other to convey various products or parts in a stable state together with the pallet. In particular, in the present invention, since the double-row roller chain is used as the chain for rotating each accum roller, the average breaking strength of the chain can be doubled, so there is no concern that the chain will extend even after long-term use. Since there is no concern that the chain will break even if an overload is applied, it is possible to provide a conveyor that is strong and has few failures, and the two-row roller chain is supported by the two-row chain guide that is fitted into the fitting groove of the frame. Since it is operated by being operated, the chain can be reliably meshed with the sprocket and the accumulation roller can be rotated smoothly. Be one that can be performed in more stable state transport, practical effect of that is extremely high.

[Brief description of drawings]

FIG. 1 is a perspective view showing the overall structure of an accumulator having a drive device according to the present invention.

FIG. 2 is a front sectional view similarly showing the internal structure of the accumulation conveyor.

FIG. 3 is a front sectional view showing an enlarged main part of the present invention.

FIG. 4 is a front sectional view showing a main part of a conventional device.

[Explanation of symbols]

 3, 4 Left and right frame body 5 Accumulation roller 5T Rotation shaft 21 Sprocket 22A, 22B Two rows of roller chain 23 Upper chain guide 23T Fitting groove 24 Lower chain guide 24T Fitting groove

Claims (1)

[Scope of utility model registration request] 1. A structure in which a large number of accumulator rollers, which are driven and rotated by meshing of a driving chain and a sprocket, are arranged side by side at intervals in the longitudinal direction, and the pitch intervals of these accumulator rollers can be variably adjusted. In the above-mentioned accumulation conveyor, the driving chain is connected to the roller chain in two rows.
A row roller chain is formed, and a fitting groove is provided in the longitudinal direction in the frame that supports each of the above accumulator rollers,
A drive device for an accumulator, wherein a two-row chain guide that supports the two-row roller chain is fitted in the fitting groove.