JPH0787911B2 - Coating liquid deposition device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coating for forming an insulating coating on an upper member of a U-shaped staple (also called a claw nail) made of a metal material in manufacturing an insulating staple. The present invention relates to a device for adhering a liquid.

[0002]

2. Description of the Related Art As an apparatus of this type, for example, Japanese Patent Publication No. 39
There is a device disclosed in Japanese Patent Publication No. 20971. The apparatus is provided with a coating liquid tank vertically movable below a conveyor that is provided with a large number of staple mounting portions and is configured to move in the horizontal direction, and by the upward movement of the coating liquid tank, The mounted staple is relatively immersed in the coating liquid in the coating liquid tank, and is lifted by downward movement.

In the above apparatus, when the coating liquid is attached to the staple, the staple is soaked in the coating liquid by the vertical movement of the coating liquid tank in the process of horizontal movement of the conveyor, and then the coating liquid is pulled up from there to deposit the coating liquid on the staple. Since it can be attached, the staple with the coating liquid can be directly transferred to the next process.

[0004]

However, in the above device,
In the process of horizontally moving the conveyor, the staple is soaked in the coating liquid and subsequently lifted, so that the staple moves laterally with respect to the coating liquid from the start of the immersion to the end of the lifting. As a result, there have been problems that the thickness of the coating liquid adhered to the staple is uneven and the coating shape becomes distorted.

The present invention has been made in order to solve the above-mentioned problems (technical problems) of the prior art, and the dipping of the staple in the coating liquid is performed at a speed equal to the moving speed of the coating liquid tank in the moving direction of the conveyor. The coating liquid can be applied to the staple in a uniform thickness so that it can be performed in a state where the staple does not laterally move relative to the coating liquid. The purpose is to provide an attachment device.

[0006]

In order to achieve the above object, a coating liquid depositing apparatus according to the present invention is provided with a coating liquid below a conveyor which has a large number of staple mounting portions and is adapted to move in a horizontal direction. A coating is provided so that the tank can be moved up and down, and the stapling attached to the conveyor is relatively immersed in the coating liquid in the coating liquid tank by the upward movement of the coating liquid tank, and is lifted by the downward movement. In the liquid adhering device, the coating liquid tank is configured to be movable in the moving direction of the conveyor in a state where the staple is immersed in the coating liquid, and the coating liquid tank has the tank in the moving direction of the conveyor. A synchronous drive means for moving at a speed equal to the moving speed is additionally provided.

[0007]

Operation: The staple is mounted on the conveyor and moves horizontally. In the process, the coating liquid tank moves up to immerse the staple in the coating liquid, and then the coating liquid tank moves downward to lift the staple out of the coating liquid. In the above process, when the staple is immersed in the coating liquid, the coating liquid tank moves in the moving direction of the conveyor at a speed equal to its moving speed by the synchronous driving means. As a result, the staple and the coating liquid are immersed in the coating liquid and then withdrawn without relative lateral movement.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 1 denotes a base frame, which is formed by providing various support frames 3 on a machine base 2. 4 is a conveyor, and a chain conveyor is used as an example. Reference numerals 5 and 6 denote a pair of drive wheels of the conveyor, which are chain sprockets and are rotatably mounted on the support frame 3. One drive wheel is rotated by a prime mover (not shown) such as a motor. The other drive wheel may be driven in synchronization with it. Reference numeral 7 is an endless chain that is stretched around the drive wheels 5 and 6. The chain 7 has a well-known structure as shown in FIG. 7a is a chain element, and 8 is a chain roller. A fastening piece 9 is provided for each chain element 7a, and a fastening hole 10 is formed therein. Returning to FIG. 1 again, 11 is a locking body, which is attached to each chain element 7a by utilizing its fastening hole 10. Reference numeral 12 denotes a mounting portion provided on the locking body 11, which is formed in a groove shape as an example so that the leg portion of the staple can be inserted. Further, the mounting portion 12 is provided in a positional relationship in which the plurality of locking bodies 11 respectively are arranged side by side at regular intervals. It should be noted that the mounting portion 12 may be configured with a hole into which the leg portion of the staple is inserted instead of the groove.

Next, 15 is a known stapler supply device provided along the upper horizontal moving part of the conveyor 4. Reference numeral 16 is a hopper in the apparatus, in which a large number of staples are housed. Reference numeral 17 is a vertically movable scooping plate provided in the hopper 16, 18 is a cylinder for pushing up the scooping plate 17, and 19 is a guide rail provided in a continuous positional relationship with the scooping plate 17. Reference numeral 20 denotes a launching device, which is provided with a launching piece 21 that is vertically movable.

Next, reference numeral 24 denotes a coating liquid deposition device provided along the lower horizontal moving part of the conveyor 4. The coating liquid deposition device 24 will be described below. Reference numeral 25 denotes a liquid tank table, which is supported by an elevating means 26 such as a hydraulic cylinder so as to be vertically movable. A cylinder using air or other fluid may be used as the elevating means. Alternatively, a pantograph type lifting table may be vertically moved by a motor. 27 is a coating liquid tank, which is mounted on the liquid tank table 25 so as to be movable back and forth in a direction parallel to the moving direction of the conveyor 4. That is, as shown in FIG. 2, overhanging pieces 28, 28 are provided on the left and right sides of the lower portion of the coating liquid tank 27, and these are provided on the liquid tank base 25.
Is fitted to guide members 29, 29 provided in a direction parallel to the moving direction of the conveyor 4, and the coating liquid tank 27 is guided by the guide member 29 so as to be movable back and forth in the above-mentioned direction. ing. Reference numeral 30 represents a coating liquid for insulating coating filled in the liquid tank 27. Reference numeral 31 denotes an overflow liquid receiving box provided on the front and rear sides of the coating liquid tank 27 in the moving direction of the conveyor. As shown in FIG. 2, the coating liquid tank 27 and the side wall 27a of the receiving box 31 are
31a is formed slightly higher than the front and rear walls 27b of the liquid tank 27, so that the coating liquid 30 overflowing from the liquid tank 27 can surely enter the receiving box 31. It should be noted that a hole is formed in the bottom of the receiving box 31 and one end of a hose is connected thereto, and the other end of the hose is connected to a pump for supplying the coating liquid to the liquid tank 27 and collected in the receiving box 31. The coating liquid may be automatically reused.

Next, a synchronous drive means for moving the coating liquid tank 27 in the moving direction of the conveyor 4 at a speed equal to its moving speed will be described. Reference numeral 33 denotes a connecting member attached to the coating liquid tank 27, which is erected from an extending piece 32 integrated with the bottom plate of the liquid tank 27. Reference numeral 34 denotes an engaging portion provided at an upper end portion of the member 33, which is inserted between the chain rollers 8 which are lateral members of the chain 7 as shown in FIG. The chain 7 is movable in the vertical direction and is engaged with the chain 7 in the moving direction. Denoted at 35 is a driven piece extending downward from the extending piece 32, which is projected downward through a guide groove 36 provided in the liquid tank base 25 as shown in FIG. 37 is a restoring means for the coating liquid tank, which is constructed by using a hydraulic cylinder like the elevating means 26.

Next, 41 is a well-known wiping device provided at the lower stage of the conveyor 4 in the horizontal moving section next to the coating liquid depositing device 24, which is one of the inner staples of the coating liquid deposited on the upper member of the staple. The coating liquid adhering to the upper surface of the head is wiped off. Reference numeral 42 denotes a solidification furnace provided next to the wiping device 41, which dries and solidifies the coating liquid attached to the staple.

Next, 43 is a detaching device, which is a mounting portion of the conveyor 4.
It is a device to pull out the insulating staple that is the product from 12. The apparatus will be described below. Reference numeral 45 denotes a detachable piece, which is pivotally attached to the support frame 3 using a shaft body 46. Reference numeral 47 denotes a drive device for the detachable piece 45. Reference numeral 48 denotes a cam in the drive unit, which is rotated by a chain 49 in synchronization with the movement of the conveyor 4. Reference numeral 50 denotes a push-up lever, which is pivotally attached to the support frame 3 using a shaft 51, and a follower (for example, a roller) 52 provided at a free end portion thereof is brought into contact with the peripheral surface of the cam 48.
Reference numeral 53 is a transmission rod, which is supported by a guide 54 attached to the support frame 3 so as to be vertically movable, and its lower end is in contact with the push-up lever 50. Reference numeral 55 is an interlocking lever formed integrally with the disengagement piece 45, and reference numeral 56 is a return spring stretched between the lever 55 and a spring seat 57 attached to the support frame 3, and a tension spring is used. The interlocking lever 55 is pulled by the return spring 56 and is in contact with the upper end of the transmission rod 53.

Next, the manufacturing of the insulating staple by the insulating staple manufacturing apparatus having the above structure will be described. The chain 7 is continuously moved in the direction of the arrow by the rotation of the drive wheels 5, 6. A large number of staples in the hopper 16 are picked up by the vertical movement of the scooping plate 17 in the supply device 15, and the guide rails 19 slide down while being aligned. And conveyor 4
By the operation of the punching piece 21 synchronized with the movement of the guide rail 19
The upper staples S are struck one by one from the lower end of the rail 19 toward the mounting portions 12, and the mounting portions 12 are mounted with the staples S one after another with their heads aligned. The staple S mounted on the mounting portion 12 reaches the horizontal moving portion on the lower side of the conveyor 4 as the conveyor 4 moves, and the head of the staple S faces downward there.

When the staple S reaches the position of the coating liquid adhering device 24, the coating liquid tank 27 in the coating liquid adhering device 24 is moved up by the upward movement of the liquid tank base 25 by the elevating means 26. In the upward movement process, the engaging portion 34 of the connecting member 33 engages with the chain roller 8 as shown in FIG. When the engagement is achieved, the coating liquid tank 27 moves on the liquid tank table 25 in the same direction as the conveyor 4 at the same speed. In this state, the upward movement of the coating liquid tank 27 is still continued, and the head of the staple attached to the mounting portion 12 enters the coating liquid 30 in the coating liquid tank 27 straight downward. Then, when the coating liquid tank 27 moves up to a position where the head of the staple S is immersed in the coating liquid 30 to a predetermined depth, the upward movement of the coating liquid tank 27 by the elevating means 26 is stopped. At this position, the coating liquid tank 27 is held for a certain time, and the coating thickness of the staple becomes a predetermined thickness. After that, the elevating means 26 is used to coat the coating liquid tank.
27 is moved down. The downward movement of the staple S causes the coating liquid.
It is lifted straight up from 30. After the staple S has come out of the coating liquid 30, the engagement between the engaging portion 34 of the connecting member 33 and the chain roller 8 is released, and the coating liquid tank 27 stops its lateral movement. After this state, the coating liquid tank 27 is returned to the original position in the direction opposite to the moving direction of the conveyor by the pushing of the driven piece 35 by the returning means 37.

The operation of the coating liquid depositing device 24 as described above is repeated, and the coating liquid is deposited by the same action as described above on the staples that successively reach the position of the coating liquid depositing device 24 as the conveyor 4 moves. Is done. In that case, the upward movement and downward movement of the coating liquid tank 27 and the progress in the moving direction of the conveyor and the return in the opposite direction are performed by a large number of staples that are successively conveyed by the conveyor once (or even twice or more). Possible) Corresponding to the movement of the conveyor so as to be immersed in the coating liquid. As the means, the elevating mechanism and the returning mechanism of the coating liquid tank 27 are mechanically linked with the conveyor, or the elevating mechanism and the returning mechanism are controlled by a timer.
In the case of repeating the above, the coating liquid 30 is held in a constant amount in the coating liquid tank 27 to keep its liquid level constant, and the rising height of the coating liquid tank 27 by the elevating means 26 is constant. The coating liquid 30 is always immersed to a constant depth. As a means for holding a fixed amount of the coating liquid 30, for example, an electric liquid level sensor is attached to the coating liquid tank 27, the sensor detects the height of the liquid surface, and the coating liquid tank is detected by the detection signal.
The pump that supplies the coating liquid to 27 is automatically controlled so that the height of the liquid surface is kept constant.

The stapling to which the coating liquid is attached as described above reaches the location of the wiping device 41 as the conveyor 4 moves horizontally, where the coating liquid on the upper surface of the head is wiped off, and further reaches the solidification furnace 42 for coating. The liquid is dried and solidified.

The insulating staple S2 thus produced reaches the location of the separating device 43 as the conveyor 4 moves. When the follower 52 is in contact with the lower step portion of the cam 48 as shown in FIG.
45 is held at a position along the locking body 11 by the urging force of the return spring 56. In this state, when the insulating staple S2, which is a product, moves across the separating piece 45 as shown in FIG. 1 or FIG. 3B by the movement of the conveyor 4, the cam 48 that rotates in synchronization with the movement of the conveyor 4 causes As shown in FIG. 3A, the detachable piece 45 is swung rapidly in the direction of arrow 60, which is separated from the conveyor 4. That is, the push-up lever 50 is rapidly pushed up by the cam 48 as shown in the figure, and the interlocking lever 55 is pushed up via the transmission rod 53, so that the disengagement piece 45 rapidly swings in the direction of arrow 60. Due to such a sudden movement of the detaching piece 45, the insulating staple S2 mounted on the mounting portion 12 is momentarily
That is, the insulating coating on the staple S2 is pulled out from the mounting portion 12 without sliding on the detaching piece 45. Immediately after the disengagement piece 45 suddenly moves in the direction of arrow 60 as described above, the follower 52 of the push-up lever 50 comes into contact with the lower step portion of the cam 48 again, so that the disengagement piece 45 is attached with the return spring 56. It is swung rapidly in the direction of arrow 61 by the force, and the next insulating staple S
Before the 2 reaches the tip of the detachable piece 45, the locking body 11
It is returned to the position along.

The above-described operation is repeated in the same manner in the devices denoted by reference numerals 15, 20, 24, 41, 42, and 43, respectively, in accordance with the endless movement of the conveyor 4, and the insulating staple is continuously manufactured. It

Next, the synchronous drive means causes the coating liquid tank 27 to advance in the moving direction of the conveyor 4 by a feed mechanism such as a motor, and the motor is synchronized with the prime mover of the conveyor to form the coating liquid layer. It is also possible to move the 27 at the same speed as the conveyor 4.

[0021]

As described above, according to the present invention, when the coating liquid is adhered to the staple S, the staple S moves in the coating liquid 30 by the upward movement of the coating liquid tank 27 while the conveyor 4 moves horizontally. Since it is possible to attach the coating liquid to the staple by immersing it in the following and pulling it up from there by downward movement, it goes without saying that the staple having the coating liquid attached can be directly transferred to the next step.

Even when the coating liquid is deposited in the process of horizontally moving the conveyor 4 as described above, when the coating liquid is deposited, the coating liquid tank 27 is moved in synchronism with the conveyor 4, so that the coating liquid 30 is swollen S. Is soaked and lifted up that it does not relatively move laterally, that is, the coating liquid is adhered in such a state that the staple S directly enters the stationary coating liquid 30 downward and goes straight upward. It is possible to increase the possibility that the coating liquid adheres to the staple in a uniform thickness.

[Brief description of drawings]

FIG. 1 is a front view of an insulating staple manufacturing apparatus.

FIG. 2A is a perspective view showing a coating liquid tank and a relationship between the coating liquid tank and a chain, and FIG. 2B is a sectional view taken along line BB in FIG.

FIG. 3 (A) is a front view (partial view) showing a product withdrawn state, and FIG. 3 (B) is a perspective view showing a state where the product straddles the detachable piece.

[Explanation of symbols]

 4 Conveyor 26 Elevating means 27 Coating liquid tank

Claims (2)

[Claims] 1. A coating liquid tank is vertically movable below a conveyor having a large number of staple mounting portions and configured to move in a horizontal direction, and the conveyor is moved by the upward movement of the coating liquid tank. In the coating liquid adhering device in which the staple attached to the is relatively immersed in the coating liquid in the coating liquid tank, and is lifted by downward movement, the coating liquid tank is
In the state in which the staple is immersed in the coating liquid, it is configured to be movable in the moving direction of the conveyor, and the coating liquid tank is for moving the tank in the moving direction of the conveyor at a speed equal to its moving speed. A coating liquid adhering device characterized in that a synchronous drive means is attached. 2. A detachment piece for detaching the staple from the staple mounting portion is provided along the conveyor at a position on the lower side in the moving direction of the conveyor with respect to the coating liquid tank. The coating liquid depositing device according to claim 1, further comprising a drive device for abruptly moving it in a direction away from the conveyor.