JPH03216451A - Thin product accepting device - Google Patents

Abstract

PURPOSE:To make a product usable irrespective of height of a product conveying path in the preceding process by installing a first belt conveyer swingable around its drive roll side, a retaining roller in the upper of a drive roller and a second belt conveyer vertically movable. CONSTITUTION:A thin product 16 is conveyed in the direction from left to right by a conveyer 14 and discharged from a discharge port 12a. Since the first belt conveyer 21 is constituted swivelably with a side of a drive roller 20 thereof serving a the center, a side of a driven roll 22 of the belt conveyer 21 is position-adjusted in accordance with height of the conveyer 14. The thin product 16 is moved to the side of the roll 20 in accordance with action of the belt conveyer 21, when a part, protruding ahead, of the product 16 is increased longer than the roll 20, the product 16, by its own weight, is brought into contact with a retaining roll 26 in a manner wherein a rear end side of the product 16 is tumbled, and the product 16 is two-point supported by a part of the roll 20 and the roll 26 and discharged onto the second belt conveyer 38 without flawing.

Description

[Detailed Description of the Invention] Summary Regarding a receiving device for thin products such as printed wiring boards, it can be used regardless of the process of the product conveyance path in the previous process, is less likely to damage stacked products, and is The purpose of this device is to provide the above-mentioned device that can be used without adjusting the operating state of the process, and is designed to sequentially stack thin products transported by a conveyor device at a predetermined position. A first belt conveyor formed by winding an endless belt between rolls is provided so as to be swingable around the drive roll side, and the height of the driven roll is variable in accordance with the height of the conveyor device. A presser roll is provided above the drive roll and is driven to rotate at the same circumferential speed as the circumferential speed of the endless belt, and the presser roll moves from the driven roll side to the drive roll side. The thin products being discharged from the belt conveyor are supported at two points by the drive roll of the first belt conveyor and the presser roll, and the thin products being discharged from the first belt conveyor are sequentially The second stacking belt conveyor is configured to be driven as necessary, and the second belt conveyor is configured to be movable up and down.

INDUSTRIAL APPLICATION FIELD The present invention relates to a receiving device for thin products such as printed wiring boards.

In the field of manufacturing and processing thin products such as printed wiring boards, when processing through multiple processes is required, material nodes between the processes are used to create lines and automate the manufacturing and processing processes. influences the possibility of For this reason, there is a need for a thin product receiving device suitable for line-based processing and automation for the purpose of improving productivity. Furthermore, in order to provide a thin product receiving device that satisfies the above requirements, it is required that the product is not damaged during handling in order to improve the quality of the final product.

FIG. 4 shows an example of a conventional thin product receiving device.

Thin products 4 transported by a conveyor device 2 are stacked one after another on a predetermined position on a mounting table 6 having an elevator mechanism. The mounting table 6 is sequentially lowered according to the number of thin products 4 stacked, and the products 4 discharged from the conveyor device 2 slide on the products already stacked and move to a predetermined position on the mounting table 6.

Problems to be Solved by the Invention According to the prior art illustrated, products are stacked on the mounting table without sequentially lowering the mounting table.
If the conveyor device in the previous process is located at a low position, there is a problem in that the receiving device cannot be operated normally.

Furthermore, since the products discharged from the conveyor device are moved to a predetermined position while sliding over the products already stacked, there is a problem that the front and back surfaces of the products are easily scratched.

Furthermore, when we receive the number of products that can be placed on the mounting table,
Since it takes a finite amount of time to move these stacked products to the subsequent process, it is necessary to make adjustments such as temporarily stopping the conveyor equipment in the previous process, making it suitable for process line formation and automation. There is a drawback that there is no

The present invention was created in view of these circumstances, and can be used regardless of the height of the product conveyance path in the previous process, and can be used to prevent damage to stacked products and prevent damage to products in the previous process. The object of the present invention is to provide a thin product receiving device that can be used without adjusting its operating conditions.

Means for Solving the Problems The thin product receiving device of the present invention, which has been made to solve the above-mentioned technical problem, is a thin product receiving device that sequentially stacks thin products transported by a conveyor device at a predetermined position. , a first belt conveyor formed by winding an endless belt between a driving roll and a driven roll,
The drive roll is provided to be swingable around the drive roll, so that the height of the driven roll is variable according to the height of the conveyor device, and above the drive roll, the rotation speed of the endless belt is adjusted. A presser roll that is rotationally driven at the same circumferential speed is provided, and the thin product that has moved from the driven roll side to the drive roll side and is being discharged from the first belt conveyor is placed on the first belt conveyor. A second belt conveyor is configured to be supported at two points by a drive roll portion and the presser roll, and to be driven as necessary, for sequentially stacking the thin products discharged from the first belt conveyor. In addition, the second belt conveyor is configured to be movable up and down.

According to the configuration of the device of the present invention, the first belt conveyor is provided so as to be swingable around its driving roll side, and the height of the driven roll is adjusted according to the height of the conveyor and conveyor device in the previous process. Since the height is made variable, it can be used regardless of the height of the product conveyance path in the previous process.

Further, according to the configuration of the apparatus of the present invention, a presser roll is provided above the drive roll of the first belt conveyor, so that the thin product being discharged from the first belt conveyor is placed on the drive roll of the first belt conveyor. Since the product is supported at two points by the presser roll, the product is prevented from coming into contact with the products already stacked until the product is moved to a position near the predetermined position where the products are stacked one after another. The product is less likely to be damaged.

Furthermore, according to the configuration of the device of the present invention, the part where the products discharged from the first belt conveyor are stacked is on the second belt conveyor, and the second belt conveyor is configured to be driven as necessary. Since the stacked products can be moved up and down along with the second belt conveyor, the stacked products can be moved to different positions on the second belt conveyor within a short time, and this receiving device can be used to adjust the operating status of the previous process. You will be able to use it without.

The first belt conveyor, which is formed by winding an endless belt between a drive roll and a driven roll, is provided so as to be able to swing around the drive roll side because of the configuration of the drive roll side and the configuration of the driven roll side. This is because the driven roll side is generally simpler when compared with the above, and the swinging mechanism can be constructed relatively easily compared to a case where the driven roll side is provided swingably around the driven roll side.

Example Embodiments of the present invention will be described below based on the drawings.

FIG. 1 is a configuration diagram of a thin product receiving device showing an embodiment of the present invention. In this embodiment, the receiving device is a printed wiring board discharged from a large dryer that dries ink on a solder resist of a printed wiring board. Used for receiving boards. 12 is a dryer, 14 is a conveyor device which is a component of the dryer 12, and a thin product 16 is a conveyor device 1.
4 from the left to the right in FIG. 1, and is discharged from the discharge port 12a.

18 is the main body of the receiving device, and the first belt conveyor 2
The first drive roll 20 is rotated clockwise in the figure by a drive mechanism (not shown) fixed to the main body l8.

The first belt conveyor 21 includes a driving roll 20, a driven roll 22, and a plurality of endless belts 24 such as timing belts arranged in parallel.
is configured to be able to swing freely around the drive roll 20 side. When this receiving device is used, the position of the driven roll 22 side of the first belt conveyor 21 is adjusted according to the height of the conveyor device 14 of the dryer, and is fixed at that position by a locking mechanism (not shown).

Reference numeral 26 denotes a press roll provided above the drive roll 20. In this embodiment, the press roll 26 is provided above the drive roll 20 and on the upstream side of the drive roll 20 in the product conveyance direction.

The presser roll 26 is driven to rotate at the same circumferential speed as the circumferential speed of the endless upper belt 24, and at least the outer peripheral portion of the presser roll 26 and its vicinity are made of a soft elastic material such as urethane rubber. The products being discharged from the belt conveyor 21 of No. 1 are less likely to be damaged.

A stopper drive device 28 is provided at the top of the main body 18, and the alignment stopper 32 is actuated by rotation of a shaft 30 connected to this drive device.

34 is the belt conveyor 21 where the leading or trailing end of the product is the first
This is a sensor such as a photosensor that detects that the product has passed through the approximate center position on the top, and the detection signal is input to the stopper drive device 28, and based on the detection signal, the product reaches the position of the alignment stopper 32. The alignment stopper 32 is activated before this. Alignment stopper 3
2 is a stopper surface 3 parallel to the rotation axis of the driving roll 20, etc.
2a, and when the alignment stopper 32 is in operation, the product comes into contact with this stopper surface 32a, so that the inclination of the product on the first belt conveyor 21 with respect to the traveling direction is corrected. It has become.

Reference numeral 36 denotes a lifting device provided on the main body 18, which allows the second belt conveyor 38 to move up and down. When the products are stacked on the second belt conveyor 38 and the upper part thereof is detected by the sensor 40, this detection signal is input to the lifting device 36, and the second belt conveyor 38 is lowered by a predetermined amount. It has become. When the second belt conveyor 38 descends to the lowest position of its movable range as shown at 38°, the second belt conveyor 38 is driven and the stacked products are moved to the right position in the figure where it is easy to take out the products. It is supposed to move. 42 is a sensor for stopping the movement of the product on the second belt conveyor 38. When the products move on the second belt conveyor 38 as described above, in order to properly stack the products discharged from the first belt conveyor 21,
The second belt conveyor 38 is automatically raised to its original position. Since the stacked products are moved on the second belt conveyor 38 and the second belt conveyor 38 itself is moved quickly, there is no need to stop the dryer-side conveyor 14, etc. during this time.

Now, assuming that the alignment stopper 32 is not operating, the operation of this receiving device will be explained with reference to FIG. The thin products carried in from the conveyor device on the dryer side move to the drive roll 20 side according to the operation of the first belt conveyor 21 (FIG. 2(a)). As the product 16 moves further and the portion of the product 16 that protrudes beyond the drive roll 20 increases, the rear end of the product 16 hits the presser roll 26 due to its own weight, as shown in FIG. The product 16 comes into contact with the product 16 in a manner such that the products 16 are bent over each other, and the product 16 is discharged from the first belt conveyor 21 while being supported at two points by the drive roll 20 portion of the first belt conveyor and the presser roll 26. At this time, since the product 16 is supported at two points, the product 16 is transferred to the second belt conveyor 38.
Even if the product is placed above the product that is already bonded thereto, there is no risk of damage to both products. Then, as shown in FIG. 3C, when the contact between the product 16 and the presser roll 26 is released, the product 16 is moved from its tip side onto the second belt conveyor 38 due to its own weight. Although the products fall upward, the parts where the products rub against each other are limited to the vicinity of the leading ends of the products in the conveyance direction, so that scratches are significantly less likely to occur compared to the prior art.

Next, the function of the alignment stopper, which is unique to this embodiment, will be explained with reference to FIG. The products 16 carried from the conveyor device on the dryer side to the first belt conveyor 21 are tilted non-uniformly with respect to the traveling direction of the products, that is, the left-right direction in FIG. 3, as shown by A. Sometimes. If the products are fed from the first belt conveyor 21 onto the second belt conveyor 38 in such an inclined state, the products cannot be stacked on the second belt conveyor 38 in an orderly manner. In the present embodiment, the sensor 34 detects that the product has passed a predetermined position on the first belt conveyor 21, and the alignment stopper 32 is operated at a predetermined timing based on the detection signal. Belt conveyor 2
Since the products being discharged from the second belt conveyor 38 temporarily come into contact with the stopper surface 32a of the alignment stopper, the inclination of the products with respect to the conveying direction is corrected, and the products can be stacked in an orderly manner on the second belt conveyor 38. become able to.

Effects of the Invention As explained above, according to the present invention, it can be used regardless of the height of the product conveyance path in the previous process, and it can be used to prevent damage to stacked products and prevent the operation of the previous process. This has the effect that it is possible to provide a thin product receiving device that can be used without adjusting its condition.

[Brief Description of the Drawings] Fig. 1 is a configuration diagram of a thin product receiving device showing an embodiment of the present invention; Fig. 2 is an explanatory diagram of the operation of the device; Fig. 3 is an explanatory diagram of the action of the alignment stopper; FIG. 4 is an explanatory diagram of the prior art. DESCRIPTION OF SYMBOLS 14... Conveyor loading, 20... Drive opening 21... First belt conveyor, 22... Driven roll, 24... Endless belt, 26... Presser roll, 32... ...Alignment stopper, 38...Second (7) Helt conveyor.

Claims (1)

[Claims] 1. In a thin product receiving device that sequentially stacks thin products conveyed by a conveyor device (14) at a predetermined position, an endless shape is provided between a driving roll (20) and a driven roll (22). A first belt conveyor formed by winding a belt (24) (
21) is provided to be swingable around the drive roll (20) side, so that the height of the driven roll (22) is variable according to the height of the conveyor device (14), Above the drive roll (20), the endless belt (2
A presser roll (26) rotated at the same circumferential speed as the circumferential speed of step 4) is provided, and the presser roll (26) is moved from the driven roll (22) side to the drive roll (20) side and rotates on the first belt conveyor. The thin products being discharged from the drive roll (21) of the first belt conveyor (21) are
0) and the presser roll (26), and sequentially stack the thin products discharged from the first belt conveyor (21), as necessary. The second
A thin product receiving device characterized by having a belt conveyor (38) movable up and down. 2. The thin product receiving device according to claim 1, further comprising: a sensor (34) for detecting that the thin product passes a predetermined position on the first belt conveyor (21); The alignment stopper (32) is operated at a predetermined timing based on the detection signal, so that the thin products being discharged from the first belt conveyor (21) temporarily come into contact with the alignment stopper (32). A thin product receiving device characterized by: