JPH0332640B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a surface treatment barrel used for surface treatments such as plating and phosphate treatment.

[Background of the invention]

A surface treatment barrel is used to continuously perform surface treatments such as plating and phosphate treatment. The surface treatment barrel generally has a polygonal cross section (usually 6
It is a square-shaped porous container that is rotatably supported by a frame. The object to be processed is placed in the porous container and transported through the frame to a predetermined processing tank by a transport means, and when the barrel is immersed in the processing liquid in the processing tank, the processing liquid flows into the porous container through the holes. However, when the barrel is rotated or rocked in this state, the material to be processed in the porous container is agitated and comes into uniform contact with the processing liquid.
In the case of plating, when the object to be treated in the barrel is energized as a cathode, plating or other surface treatment is applied to the surface of the object. After processing, the barrel is taken out from the processing tank by means of a conveying means via the frame, and further transferred to the next predetermined processing tank for the next processing.

The surface treatment barrel is thus extremely useful because it is successively conveyed to a series of treatment tanks to automatically perform successive surface treatments. For example, in the case of galvanizing, a pre-cleaning tank, a degreasing tank, a rinsing tank, a plating tank, and a rinsing tank are arranged, and the barrel is sequentially transferred and immersed in each of the tanks, and a series of treatments is automatically performed.

[Conventional technology]

The structure of a conventional barrel is shown in FIG. In the figure, reference numeral 1 denotes a container, which has a polygonal cross section, and has a large number of holes 3 formed therein, and both sides 4, 4.
Lead wire insertion holes 5, 5 are provided in the. An opening 6 is provided on one side of the circumferential body 2, and a lid 7 is removably attached to the opening 6. Locking pieces 8, 8 are provided on the upper surface of the lid 7 to hold shafts 9, 9. The locking pieces 8, 8 are mounted rotatably around the center.
Both ends of the opening 6 are fitted into locking holes 12, 12, 13, 13 provided in the front and rear edges 10, 11 of the opening 6. The lid 7 is attached to and removed from the opening 6 when the object to be processed is taken in and out of the barrel 14 having the above-mentioned structure.

[Problem that the invention seeks to solve]

In the above conventional configuration, when closing the opening 6 with the lid 7, the lid 7 is fitted into the opening 6, the locking piece 8,
8 to fit both ends of the locking pieces 8, 8 into the locking holes 12, 12, 13, 13 on the front and rear edges 10, 11 of the opening 6 (solid line position in Figure 17).
Bolts 15, 15 screwed onto shafts 9, 9 of 8
to secure the locking pieces 8, 8, and when removing the lid 7 from the opening 6, loosen the bolts 15, 15 and rotate the locking pieces 8, 8 to secure both ends of the locking pieces 8, 8. are released from the locking holes 12, 12, 13, 13 (dotted line position in Figure 17). The attachment and detachment of the lid 7 must be carried out manually by all workers, and therefore, it is very time-consuming to take in and out the objects to be treated from the barrel 14, and this is why surface treatment using a surface treatment barrel is difficult. This had become a major obstacle to continuous and complete automation. For example, in the case of plating, the workpiece is removed from the barrel at the end of the process for post-processing and drying, but at this time, opening and closing the barrel and taking out the workpiece must be done manually, so the continuous plating process It was impossible to fully automate the process.

[Means for solving problems]

As a means for improving the above-mentioned conventional drawbacks, the present invention provides an opening in the circumferential body of a porous container rotatably supported by a frame, and a pair of lid plates that open outward at both side edges of the opening. A lid plate locking mechanism is installed between the pair of lid plates of the surface treatment barrel whose root edges are pivotally connected to each other, and the lid plate locking mechanism is attached to a locking mechanism provided on one of the lid plates. It consists of a joint part and a locking piece slidably provided on the other lid plate, and the locking piece is slid forward and backward by a pressing means disposed close to the barrel, thereby allowing the locking piece to open. The present invention provides a lid plate locking mechanism for a surface treatment barrel, characterized in that a locking piece and an engaging portion of one lid plate engage and disengage.

[Effect]

The effects of the present invention are as follows.

The lock between the pair of lid plates is released by pressing and sliding the locking piece of the lid plate locking mechanism with a pressing means on one side of the barrel, thereby separating the engaging part from the locking piece. When the porous container is rotated, as the opening moves downward, the pair of lid plates will open naturally due to its own weight, and while it remains open, as the opening moves upward, the pair of lid plates will collapse under its own weight and open. Close section. Then, just before the opening moves upward and the pair of cover plates closes the opening, the barrel rotation is temporarily stopped, the object to be processed is introduced into the barrel from the opening, and the barrel rotation is started again to close the pair of lid plates. When the lid plate closes the opening, the locking piece of the lid plate locking mechanism is pressed and slid by the pressing means on one side of the barrel, thereby engaging the engaging part with the locking piece and locking the pair of locking pieces. Lock the lid plates together. When the barrel is immersed in the processing liquid in this state, the processing liquid flows into the container through the hole and comes into contact with the object to be processed. When the barrel is rotated or rocked, the object to be treated is stirred within the barrel, uniformly contacted with the treatment liquid, and subjected to surface treatment such as plating or plating by phosphate treatment or energization.
After processing, the barrel is removed from the processing solution, the lid plate is unlocked by the lid plate locking mechanism, and the barrel is rotated.As the opening moves downward, the pair of lid plates open naturally under their own weight and move inside the barrel. The objects to be processed fall from the opening to the outside due to their own weight and are received in a predetermined receiving means.

〔Effect of the invention〕

Therefore, in the present invention, the locking and releasing of the lid plate locking mechanism is carried out by a simple means of pressing the locking pieces of the lid plate locking mechanism with the pressing means on both sides of the barrel. The material to be processed can be automatically taken in and out of the
Complete continuous automation of surface treatment using barrels can be achieved.

〔Example〕

1 to 13 show an embodiment of the present invention, 1A is a container with a polygonal cross section, and a large number of holes 3A are formed in the container 1A,
Lead wire insertion holes 5A, 5A on both sides 4A, 4A
is provided, and limit switch detection pieces 58A, 58B, and 58C are attached to one side surface 4A. An opening 6A is provided on one side of the peripheral body 2A of the container 1A, and a pair of lid plates 7A and 7B are attached to the opening 6A so as to be openable and closable.
The root edges of A and 7B are the edges 11 on both sides of the opening 6A.
A, 11B are pivotally connected via screw threads 20A, 20B. As shown in FIG. 3, the hinges 20A and 20B consist of a pair of fixed pieces 200 and 210, and cylindrical parts 211 and 211 having a pin hole 212 in the center are formed at the upper and lower parts of the inner edge of one of the fixed pieces 210. A cylindrical portion 201 having a pin hole 202 at the center is also formed at the center of the inner edge of the other fixing piece 200, and a locking protrusion 203 is further provided on the cylindrical portion 201. The pair of fixing pieces 2
00 and 210 are joined to the pin holes 202 and 212 of the cylindrical parts 201, 211, and 211 through a pin 220, so that they can rotate relative to each other via the pin 220. The lid plates 7A and 7B are opened and closed via the hinges 20A and 20B.
When A and 7B are fully closed, the hinges 20A and 20B of the lid plates 7A and 7B are attached to the fixing pieces 20 as shown in FIG.
The locking protrusion 203 provided on the cylindrical portion 201 of 0 is prevented from bending by contacting the fixing piece 210, that is, the cover plates 7A, 7B are received at a predetermined angle θ with the opening 6A. . In this example, θ is
It is set slightly larger than 90°.

A pair of brackets 19A, 19B are attached as engaging parts near the center of the top edge of the top surface of the lid plate 7A, while a pair of brackets 19C, 19D are attached to the top edge of the top surface of the lid plate 7B. A lock frame 8 having locking pieces 8A and 8B is attached to the brackets 19C and 19D so as to be slidable left and right. Bent portions 8 are provided at both ends of the lock frame 8.
C, 8D are formed, and the bent portions 8C, 8
A contact piece 50 formed at the tip of a piston rod 49 of an air cylinder 48 serving as a pressing means, which is arranged in a pair on the left and right sides of a frame 40 for taking in and out of the processed material, which will be described later, comes into contact with the outer surface of D. Then, the locking pieces 8A, 8B of the locking frame 8 are engaged with the brackets 19A, 19B of the cover plate 7A by pressing the locking frame 8 through the bent portions 8C, 8D with the air cylinder 48 and sliding it left and right. or cause them to leave. Bracket 1 as shown in Figure 6
9C and 19D, a ball 54 that is urged downward by a spring 53 built into the cap 52 is attached to the center part.
A protrusion 56 is formed on the lock frame 8 in the vicinity of the ball 54, and in the locked state shown in FIG. is prevented. In order to release the lock, when the lock frame 8 is pushed to the right by the air cylinder 48, the elasticity of the spring 53 is overcome and the ball 5
4 climbs over the convex portion 56 of the lock frame 8 and enters the unlocked state shown in FIG.

As shown in FIG. 7, the barrel 14A is rotated via a shaft 26A at the lower part of the leg 24A of a T-shaped support frame 22A consisting of a head 23A and leg 24A from which support rods 25A and 25A are extended. Can be hung freely. A gear 27A is attached to one side of the barrel 14A, and the gear 27A is connected to the support frame 2.
Gear 28 attached to one inner surface of 2A
A, the gear 28A further meshes with a gear 29A attached to one inner surface of the support frame 22A, and is coaxial with the gear 29A on one outer surface of the support frame 22A. A gear 30A is attached.

The barrel 14A is filled with the material to be processed and the lid plate 7 is closed.
A and 7B are closed, and as described above, it is suspended from the support frame 22A and transferred to a suitable conveying means for a pre-cleaning tank, a degreasing tank, a washing tank, a plating tank, a phosphate treatment tank, a chromate treatment tank, etc. Then, it is immersed in the transported processing liquid. FIG. 8 shows the barrel 14
The state in which A is immersed in the plating tank 31A is shown.
That is, in the plating tank 31A, the arms 3
1B, 31B are held out, and the arms 31B, 31
Receptacle pieces 31C, 31C are attached to the upper end of B, and the support rod 25 of the support frame 22A of the barrel 14A
A, 25A to the receiving pieces 3 of the arms 31B, 31B.
Barrel 1 by being received by 1C and 31C
4A is suspended in the plating tank 31A via the support frame 22A, and the lead wires 32A, 3 are inserted from the lead wire insertion holes 5A, 5A on both sides 4A, 4A of the barrel 14A.
2A is inserted. At this time, arm 31 is generally
A cathode bus bar (not shown) is connected to the receiving pieces 31C, 31C of B, 31B, and the lead wires 32A, 3
2A is the support rod 25 of the support frame 22A of the barrel 14A
A, connected to 25A. and barrel 14A
The gear 30A of the support frame 22A is connected to the sprocket 3 attached to one outer surface of the plating tank 31A.
It meshes with chain 35A suspended from 3A and 34A. A coaxial sprocket 36A is attached to the sprocket 34A, and the sprocket 36A is connected to a motor 38 via a chain 37. When the barrel 14A is immersed in the plating tank 31A in this way, the plating liquid 39 in the plating tank 31A flows from the hole 3A in the barrel 14A to the plating tank 31A.
into the chain 37 by the motor 38.
The sprocket 36A is rotated through the sprocket 36A, and the chain 35 is rotated through the sprockets 33A and 34A.
Rotate A. When a series of surface treatment steps are performed sequentially, the chain 35A is stretched across a plurality of treatment tanks used in the step, but in this case, sprockets 33A and 34A are installed at the front and rear ends of the treatment line. is installed. Chain 35A
When the gear 30A rotates, the gear 30A of the support frame 22A meshing with the chain 35A rotates, and therefore the gear 29A coaxial with the gear 30A also rotates.
The rotation of A is transmitted to the barrel 14A via gears 28A and 27A, and the barrel 14A rotates in the direction of the arrow in FIG. 3. As the barrel 14A rotates, the objects to be treated are mixed in the barrel 14A and the plating liquid 3 is mixed.
arm 31 from the cathode busbar.
B, 31B receiving pieces 31C, 31C, barrel 14
When the lead wires 32A, 32A are energized through the support rods 25A, 25A of the support frame 22A, the surface of the object to be processed is plated. After plating and other treatments are completed, the barrel 14A is taken out from the plating tank 31A via the support frame 22A, transported, washed with water, and suspended on the loading/unloading frame 40 as shown in FIGS. 9 and 10. That is, the upper edge of the loading/unloading frame 40 has receiving pieces 41, 41.
is attached, and the support rods 25A, 25A of the head 23A of the support frame 22A are moved in and out of the frame 40, and
1, 41 accepts. In this state, the support frame 22A
The gear 30A is the sprocket 4 of the loading/unloading frame 40.
It meshes with a chain 44 suspended from 2 and 43. A coaxial sprocket 45 is attached to the sprocket 43, and the sprocket 45 is connected to a motor 47 via a chain 46. To take out the object to be processed from the barrel 14A, open the cover plate 7A, rotate the sprocket 45 by the motor 47 via the chain 46, and then rotate the sprocket 45 through the chain 46.
2 and 43 to rotate the chain 44. When the chain 44 rotates, the gear 29A of the support frame 22A that meshes with the chain 44 rotates, and therefore the gear 28A coaxial with the gear 29A also rotates. The pressure is transmitted to the barrel 14A, and the barrel 14A rotates in the direction of the arrow in FIG. 10, and when the barrel 14A is turned upside down, the object to be processed falls out of the barrel 14A due to its own weight.

The operating procedure of the barrel 14A when the object to be processed is taken in and out of the barrel 14A suspended on the loading/unloading frame 40 is shown in FIG. That is, when the barrel 14A is rotated to the state shown in A, the barrel 14A is stopped and the air cylinder 48 is operated to release the lock of the cover plates 7A and 7B of the barrel 14A as described above, and in this state, the barrel 14A is further moved in the direction of the arrow. When the barrel 14A is rotated, the lid plate 7 is rotated as the barrel 14A is rotated.
A opens under its own weight and becomes the state shown in Low-A and Low-B. In the state shown in (b), the workpiece 51 in the barrel 14A automatically falls. After taking out the object to be processed, the barrel 14A is further rotated in the direction of the arrow, and after passing through the state shown in C, the barrel 14A is stopped at 2, just before the cover plates 7A and 7B fall down due to their own weight, and the object to be processed 51 is put in. . When the barrel 14A further rotates slightly in the direction of the arrow from the state D, the cover plates 7A and 7B fall onto the opening 6A due to their own weight, closing the opening 6A and entering the states Ho-A and Ho-B. Then, the air cylinder 48 of the loading/unloading frame 40 is operated to lock the cover plate 7A as shown in FIG. 3, thereby completing the procedure for loading/unloading the workpiece. The barrel 14A with the lid plate 7A locked in this manner is taken out from the loading/unloading frame 40 and transported to a predetermined processing tank. The barrel 14A may be rotated completely in the opposite direction to the above operating procedure, or it may be rotated in the direction of the arrow until A and B.
It may then be rotated in the opposite direction, or alternatively, it may be rotated in the opposite direction from A to B, and then rotated in the direction of the arrow. As described above, the cover plates 7A and 7B are received by the locking protrusions 203 of the hinges 20A and 20B so as to form an angle θ with the opening 6A as shown in FIG. By adjusting the inclination of the barrel 14A, the lid plates 7A and 7B are about to fall under their own weight and close the opening 6A, that is, the object to be processed 5
It is possible to adjust the inclination of the barrel 14A when inserting 1. Generally, the object to be processed 51 is placed in the barrel 14.
The angle θ of the opening 6A, which facilitates the introduction of the liquid into A, is an obtuse angle of approximately 125°.

In order to automate the procedure of taking in and out of the barrel 14A the processing object, as shown in FIG.
A, 58B, 58C are attached, and the detection pieces 58A, 58 are attached to the insertion/extraction frame 40 as shown in FIG.
A mount 5 on which limit switches 57A, 57B, and 57C are mounted, which are connected to a motor 47 that is in contact with B and 58C, and a pair of air cylinders and 48.
Attach 7 so that it can slide in the direction of the arrow. That is, when the barrel 14A is placed on the loading/unloading frame 40 and rotated, the frame 57 moves forward and the limit switches 57A, 57 are moved.
B, 57C are detection pieces 58A, 58 of barrel 14A
In this state, with the opening 6A positioned upward (FIG. 11A), the detection piece 58A of the barrel 14A and the limit switch 57A of the loading/unloading frame 40 come into contact with each other. Then, the limit switch 57A operates to stop the motor 47, temporarily stopping the rotation of the barrel 14A, and causing the pair of air cylinders 48, 48 to stop.
operates, and one air cylinder 48 releases the barrel 14.
The locking piece of the lid plate locking mechanism A is pressed and slid to automatically release the lock between the lid plates 7A and 7B of the barrel 14A. When the barrel 14A starts rotating again and operates according to the state shown in FIG. 11 and reaches the state shown in FIG. stops, a feeder (not shown) operates to feed the workpiece into the barrel 14A, and the barrel 14A starts rotating again to reach the state shown in E. When the lid plate 7B falls down under its own weight and opens the opening 6A. When the barrel 14A is closed, the detection piece 58C of the barrel 14A comes into contact with the limit switch 57C of the loading/unloading frame 40, and the rotation of the barrel 14A is stopped, and the pair of air cylinders 48, 48 are operated, and one air cylinder 48 closes the lid of the barrel 14A. The locking piece of the plate locking mechanism is pressed and slid to automatically lock the cover plate 7A of the barrel 14A. In this way, the loading/unloading operation procedure is automated.

As described above, the barrel 14A can open and close the lid plates 7A and 7B and charge the objects to be treated regardless of the rotational direction. For example, as shown in FIG. and cover plate 7A,
The workpiece 51 is put in with 7B open, and the barrel 14A is rotated in the direction of arrow A to close and lock the lid plate 7A, and the barrel 14A is immersed in the galvanizing tank 60 and moved in the direction of the arrow. After galvanizing, the barrel 14A is rotated in the direction of arrow B by passing through the rinsing tank after the galvanizing tank 60 (Fig. 13 right), releasing the lock in the access frame, and rotating the barrel 14A in the direction of arrow B, opening 6A of the barrel 14A downward. Object to be processed 5
1 is discharged, and the workpiece 51 is transferred to a baking furnace 61.
After hydrogen embrittlement removal treatment, barrel 1
4A is moved to the front stage of the chromate tank 62 (on the right side of the drawing) together with the access frame, rotated in the direction of the arrow C, and the workpiece 51 that has undergone hydrogen embrittlement removal treatment is placed with the opening 6A facing upward. By rotating 14A in the direction of arrow C, cover plates 7A and 7B are closed and locked, and barrel 1 is placed in chromate tank 62.
4A is immersed and moved in the direction of the arrow to perform chromate treatment, placed on the access frame at the rear stage of the chromate tank 62 (left side of the drawing), released the lock, rotated the barrel 14A in the direction of the arrow D, and removed the barrel 14A. A process can be performed in which the object to be treated 51 is discharged with the opening 6A facing downward, and the barrel 14A returns to the front stage of the galvanizing tank 60 again.

The present invention is not limited to the above embodiments.

14 to 16 show another cover plate locking mechanism, in which hooks 80, 80 as engaging parts are provided on the front edge of the upper surface of the cover plate 7A, and
An engagement rod 81 is inserted into the front edge of the upper surface via support tubes 82, 82 so as to be slidable in the front and rear directions. The engagement rod 81 is provided with locking pieces 80A, 80A that can be engaged with the hooks 80, 80.
1. At the lower end of the drawing frame 40, there is an abutment rod 8 that is extended out from the drawer frame 40 so that it can be moved in and out from the left and right in response to the rotation of the barrel 14A.
A contact piece 83 that contacts 4 is attached.

In the above configuration, in the locked state shown in FIG. 15, the contact rod 84 is in contact with the back side of the contact piece 83, and when the barrel 14A is rotated in the forward direction shown by the arrow in this state, as shown in FIG. Engagement rod 81
slides relatively backward, and the hooks 80, 80 and the locking pieces 80A, 80A are disengaged from each other, resulting in an unlocked state. Next, when the barrel 14A is rotated in the backward direction shown by the arrow in FIG. 16, the contact rod 84 comes into contact with the front side of the contact piece 83, and the engagement rod 81 slides relatively forward, as shown in FIG. Hook 80,80 as shown
The engaging pieces 80A and 80A are engaged again, and a locked state is established.

In this embodiment, the contact rod 84 is connected to the insertion and removal frame 40.
It may be held out from the top so that it can be raised and lowered.

[Brief explanation of the drawing]

Figures 1 to 13 show an embodiment of the present invention, with Figure 1 being a perspective view, Figure 2 being a partial sectional view of the cover plate, Figure 3 being a perspective view of the hinge, and Figure 4 being a perspective view of the hinge. 5 is a partial plan view of the lid locking mechanism in the unlocked state; FIG. 6 is a front sectional view of the bracket; FIG. 7 is a side view of the support frame attached; FIG. 8 is a partial plan view of the lid locking mechanism in the locked state; 9 is a front view of the loading/unloading frame in a suspended state, FIG. 10 is a side view thereof, and FIG.
A, Ho-B are explanatory diagrams of barrel loading and unloading operations, No. 12
The figure is a perspective view of the detection piece and limit switch part of the barrel, Figure 13 is a process diagram of galvanizing → baking → chromate treatment, and Figures 14 to 16 show other lid plate locking mechanisms. 15 is a plan view in the locked state, FIG. 16 is a plan view in the unlocked state, and FIG. 17 is a perspective view of the conventional example. In the figure, 1A... Porous container, 2A... Circumferential body, 6
A...Opening, 7A, 7B...Lid plate, 11A, 1
1B...Side edge, 14A...Barrel.

Claims (1)

[Scope of Claims] 1. An opening is provided in the peripheral body of a porous container that is rotatably supported by a frame, and a pair of lid plates that open toward the outside are provided at both side edges of the opening, respectively. A cover plate locking mechanism is further installed between the pair of cover plates of the pivotally connected surface treatment barrel, and the cover plate locking mechanism has an engaging portion provided on one cover plate and an engaging portion provided on the other cover plate. It consists of a locking piece that is slidably provided on the lid plate, and the locking piece is slid forward and backward by a pressing means placed close to the barrel, thereby locking the locking piece and one side. Lid plate locking mechanism 2 for a surface treatment barrel, characterized in that the engaging part of the lid plate engages with and separates from the engaging part of the lid plate. The base edges of a pair of cover plates that open outwardly are pivotally attached to both side edges of the unit, and a cover plate locking mechanism is installed between the pair of cover plates. The lid plate locking mechanism consists of an engaging part provided on one lid plate and a locking piece slidably provided on the other lid plate. The locking piece is slid forward and backward by a pressing means disposed close to the barrel, so that the locking piece and the engaging portion of one of the lid plates engage and disengage. The locking piece of the lid plate locking mechanism is pressed and slid by the pressing means on one side of the barrel while the object to be processed is contained in the barrel, thereby releasing the engaging part from the locking piece and locking the locking mechanism. is released, the barrel is rotated so that the opening moves downward, and the pair of lid plates is opened by its own weight, allowing the object to be processed to fall and be discharged from the opening by its own weight, and as the barrel rotates, the opening moves downward. The object to be processed is introduced into the barrel through the opening while the is moved upward, and the barrel is further rotated to collapse the pair of lid plates under its own weight to close the other half of the opening and close the lid. The plate locking mechanism is characterized in that the locking piece of the plate locking mechanism is pressed and slid by a pressing means on one side of the barrel, thereby causing the engaging portion to engage with the locking piece and putting the locking mechanism into a locked state. How to put the processed material in and out of the barrel