JPH0433986Y2 - - Google Patents

Description

[Detailed description of the invention] This invention fills and fixes the dense and dense parts such as pinholes that occur in porous objects such as cast products, sintered products, and synthetic resin molded products with an organic synthetic resin impregnating liquid to create a homogeneous product. This invention relates to an automatic basket attachment/detachment device in a fully automatic continuous impregnation facility for porous objects.

Conventionally, in the above-mentioned type of continuous impregnation processing equipment, the impregnation liquid is impregnated under vacuum into the coarse and dense parts of a porous object in an impregnation tank containing an organic synthetic resin impregnation liquid, and then the impregnation liquid is impregnated under pressure under vacuum. The following processing steps were performed using separate and independent linearly arranged equipment or devices.

(1) Remove and collect excess impregnating liquid adhering to the surface of the porous object or the object to be treated in a liquid recovery tank.

(2) In the first washing tank, the impregnated product is made into a concentrated waste liquid by water bath jet or air agitation.

(3) Process in the same manner as before in the secondary washing tank to make a diluted solution.

(4) The impregnated product was circulated in boiling water while controlling the hot water level in a thermosetting tank equipped with a preliminary tank.
Harden the impregnation solution in a hot water bath at 98℃.

(5) Remove the hot water adhering to the impregnated product using a drainer.

Therefore, the conventional method requires, for example, six units of linearly arranged equipment or equipment for the five-step process, and requires manual labor using a hoist to take in and out the impregnated material for each process. At present, there is still ample room for improvement in terms of cost, operability, safety, labor saving, etc.

Therefore, the present invention aims to provide an automatic attachment/detachment device for a bucket for storing impregnated materials, which allows attachment/detachment of the basket to be carried out in an assembly-line manner without manual intervention. The lower tip of the insertion mandrel is attached to the lower end of the insertion mandrel, which is installed vertically on the free end of the lifting/lowering frame, which is attached to the monopole of the pole swinging lift so that it can be raised, lowered and rotated by a frame lifting mechanism and a frame turning mechanism. The basket has a casing screwed onto the casing, and a drive gear attached to the lower end of a drive shaft directly connected to a stepping motor installed in the casing. is meshed with three driven gears integrated with the casing, and clearance grooves for each of the detachable pawls are carved in the lower periphery of the casing. The invention consists in that each of the detachable claws is configured to be rotated simultaneously in a horizontal plane in a counterclockwise or clockwise direction, and thus, according to the present invention, a monopole swing lift with the simplest structure can be moved up and down. The basket can be easily attached and detached by reversing the attachment/detachment claw that is attached to the frame and is to be performed following the lifting and lowering movement of the lift, and since the structure is simple and the operation is reliable, the lifting and turning of the lift is easy. The two types of motion can greatly contribute to the automation and labor saving of the impregnation process.

Next, the present invention will be explained in more detail with reference to an embodiment shown in FIGS. 1 to 5.

In FIG. 1, 1 is a loading/unloading zone for porous objects or objects to be processed located on the impregnation treatment line, 2 is an impregnation tank that is connected to an impregnating liquid supply tank (not shown), and 3 is a loading/unloading zone for porous objects or objects to be processed. 4 is a primary washing tank, 5 is a secondary washing tank, 6 is a thermosetting tank equipped with a spare tank (not shown), and 7 is a water drainer using an intermittent rotation system. These units are arranged concentrically around the first monopole swing lift 8 and are installed between the loading or unloading zone 1 on the impregnation line and the conveyor 9. The second monopole swing lift 10 is used to load and unload workpieces between the unloading zone 11 and loading zone 12 on the production conveyor line and the aforementioned loading or unloading zone.

In addition, an impregnating liquid containing acrylic as a main component and containing no surfactant is stored in the impregnating liquid supply tank, and is kept at a temperature of 5 to 15°C by appropriate cooling means, and the impregnating liquid is stored in the impregnating liquid supply tank. Tank 2 (pressure 10
Kg/cm ² ) is equipped with a clutch door type lid that can be opened and closed freely, and these two tanks are connected through appropriate pipes. A cylindrical movable body that can rotate and swing at the same time is provided in the liquid drainer 3, and the impregnating liquid recovered by this is fed back to the impregnating tank 2, which is used for primary washing. The tank 4 and the secondary washing tank 5 have almost the same structure and function, and wash the objects with an oscillating underwater jet generated by the vertical movement of the first monopole swing lift 8. The washing tanks are connected to each other through appropriate pipes. The thermosetting tank 6, which is equipped with a preliminary tank (not shown), circulates the impregnated material stored therein with hot water at a temperature of approximately 90 to 98°C while controlling the hot water level.
The impregnating liquid is hardened in a hot water bath, and the drainer 7 has an intermittent rotation type structure to remove hot water adhering to the impregnated material.

Next, as shown in FIGS. 2 and 3, the first monopole swing lift 8 is mainly composed of an elevating and lowering swing frame 13, a frame elevating mechanism 14, a frame swinging mechanism 15, a base 16, etc.
The elevating and lowering rotating frame does not rotate itself, but is attached to a monopole 19 having a rectangular cross section via a pair of geared rollers 17 and 18 so that it can be raised and lowered, and the inner guide roller pair 17 is connected to two upper and lower support shafts. 20, the outer guide roller pairs 18 are each pivoted on one other support shaft 21, so that the elevating rotating frame moves up and down without rotating independently, and the elevating rotating frame An automatic attachment/detachment device 23 for a basket 22 according to the present invention for storing objects to be processed is attached to the free end of the frame.

The automatic basket attachment/detachment device 23 according to the present invention includes:
As shown in detail in Figures 4 and 5,
An insertion mandrel 26 screws onto a casing 25 whose upper end is attached to the free end of the lifting and rotating frame 13 and whose lower end is an inverted cone-shaped guide shoe 24, and a drive source such as a stem installed inside the casing. A driving gear 30 attached to the lower end of a driving shaft 29 connected to the stepping motor 27 and the stepping motor via a coupling 28, and detachable claws of the basket 22 arranged concentrically and at equal intervals with respect to the driving shaft. A plurality of driven gears 31 integrally formed with 32
(three pieces in the illustration),
In this case, the stepping motor is connected to the partition plate 33.
It is attached to a pedestal 34 placed above with appropriate bolts 35, and each of the driven gears is fixed to each pin 36 provided between the partition plate 33 and the guide shoe 24. A sector-shaped relief groove 37 is formed on the lower circumferential side so that the attachment/detachment pawl is accommodated in the casing when the attachment/detachment claw rotates from forward rotation to reverse rotation.

As a result, when the stepping motor 27 is driven, the detachable pawl 32 is rotated counterclockwise or clockwise within a horizontal plane via the drive gear 30 and the driven gear 31.

Next, the elevating mechanism 14 of the elevating and rotating frame 13
As shown in FIG. 2, the monopole 19 is composed of a hydraulic cylinder 38 pivotally installed along the lower end of the monopole 19 and a rod 39 having one end drivingly connected to the lower support shaft 20 of the pair of guide rollers 17. The rotating mechanism 15 of the lifting/lowering rotating frame includes a reduction motor 41 placed on a pedestal 40, a drive gear 42 directly connected to this, and a drive gear 42 that meshes with the gear and is connected below the monopole 19 via a flange 43. The monopole is rotatably mounted on the base 16 via a thrust bearing (not shown) as appropriate. Further, as shown in FIGS. 6 and 7, the basket 22 for storing the impregnated product is equipped with a circular lid 45 which can be opened, closed or locked using a hinge 46 and a lock fitting 47. A stop ring 48 is provided which cooperates with the removable pawl 32 of the insertion mandrel 26.

Next, the second monopole swing lift 10 to be placed inside the production conveyor line of the transport conveyor 9 has exactly the same structure as the first monopole swing lift 8, so a detailed explanation will be omitted. The loading and unloading conditions of the unloading zone 11 and the loading zone 12 on the conveyor line for producing impregnated products are exactly the same as the loading and unloading conditions of the loading or unloading zone 1 on the circumferential impregnation line, so detailed explanations will be given below. The loading and unloading operations on the impregnation line will be described below without explanation.

Thus, an aluminum die cast product (automobile cylinder head) will be described as an example of the device of the present invention having the above configuration.
It is as follows.

First, check not only the surface but also the inside of defective holes to see if oil, water, etc. have adhered to the porous object or impregnated object (automobile cylinder head), and if so, pre-treat it. As a process, degreasing is performed by means well known per se (immersion in degreasing solution for 2 to 5 minutes),
No washing with water (immersion in clean water for 2 minutes), rust prevention (immersion in anti-rust solution for 2 to 5 minutes), and drying with hot air (120℃)
1 to 2 hours) and let it cool naturally until it can be touched by hand.

Next, about 80 cylinder heads that have been pretreated as described above or that do not require pretreatment are stored in the basket 22, and placed in the loading zone 1 shown in FIGS. 1 and 3 as shown in FIG. When the hydraulic cylinder 38 of the frame elevating mechanism 14 is actuated to lower the elevating and rotating frame 13, the stepping motor 27 is actuated in advance to position each detachable pawl 32 as shown in the two-dot chain line in FIG. In this state, the insertion mandrel 26 descends as shown in FIGS. 8 and 9, and the stopper ring 48
When the elevator shaft 29 reaches a predetermined position, the lifting and lowering rotating frame is stopped, and the stepping motor is activated to move the drive shaft 29 in the direction of the hour hand as shown in FIGS. 4 and 5. When the drive gear 30 fixed to the tip of the shaft is rotated in the direction of the hour hand, the driven gears 31 that mesh with the gear, that is, the detachable claws 32, are rotated in the direction of the hour hand ( (in the direction of the arrow) from the two-dot chain line position to the solid line position, and as shown in FIG. In this state, by operating the fluid pressure cylinder 38 in the opposite direction, the lifting/lowering rotating frame 13 is raised, and therefore the insertion mandrel 26 is raised, and each attachment/detachment claw 32 is in a horizontal state as shown in FIG. The storage basket 22 is brought into contact with the back surface of the stopper ring 48 to lift the storage basket 22, and when a certain height is reached, the lifting of the vertically rotating frame 13 is stopped.

Next, the basket 22 containing the impregnated material is transferred from the loading zone 1 to the impregnating tank 2 (withstand pressure 10 kg/cm ² ).
When charging into
The monopole 19 integrated with the driven gear rotates,
Therefore, after the lifting and lowering rotating frame 13 is rotated to just above the impregnating tank 2, the deceleration motor is stopped and the fluid pressure cylinder 38 is activated to lower the lifting and lowering rotating frame, as shown in FIG. Then, as shown in FIG. 13, if the stepping motor 27 is operated to rotate the drive shaft 29 in the counterclockwise direction, the drive gear 30 and the driven gear 31, each attachment/detachment pawl 32 is also rotated counterclockwise in the direction of the hour hand and retracted from the outside to the inside, and if the insertion mandrel 26 is raised in this state, it passes through the stopper ring 48 as shown in FIG. Return to the previous position and wait for the next processing step or loading/unloading operation.

Furthermore, the degree of vacuum in the impregnation tank 2 is set to 5 mmHg or less using a mercury manometer using a vacuum pump (not shown), and acrylic is pre-impregnated with a small amount of curing agent (peroxide) as the main component, and a surfactant is added. Pour the required amount of impregnating agent into the impregnating tank, and use a compressor (not shown) to collect 5 to 7 kg/kg of impregnating agent.
cm ² for 10 to 15 minutes, the pressure inside the impregnating tank is released by operating a valve, and the basket is lifted by the first monopole swing lift 8 in the same manner as described above and transferred to the liquid drainer 3. The collected impregnating agent is fed back to the impregnating tank.

Next, the bucket 22 containing the drained cylinder head is moved to the primary cleaning tank 4 by the first monopole swing lift 8, and the inside of the tank is cleaned by, for example, air blowing from the nozzle pipe and vertical movement of the basket. After washing with water for 10 to 20 minutes, washing is performed again with water in the secondary washing tank 5, and the waste water containing a small amount of impregnating agent is fed back to the primary washing tank 4. Subsequently, the cylinder head in the basket 22 that has been washed with water for the second time is immersed in a thermosetting tank 6 that is kept at a constant temperature of 90 to 98° C. for 15 minutes, taken out, and drained using a drainer 7. After drying with hot air at 70 to 80°C for about 20 to 30 minutes, the cylinder head is naturally released to complete the impregnation treatment process. It is transferred to the loading zone 12 on the production conveyor line of the conveyor 9 that moves to the next process.

[Brief explanation of drawings]

Figure 1 is a layout diagram of a fully automatic continuous impregnation equipment for porous objects equipped with the automatic basket attaching/detaching device according to the present invention, and Figures 2 and 3 are the first and second objects to which the device of the present invention is attached. A front view and a plan view of the pole swing lift, FIG. 4 is a longitudinal sectional view of the device of the present invention, FIG. A plan view, FIG. 7 is a sectional view taken along the line - in FIG. 6, and FIGS. 8 to 14 are explanatory diagrams showing various operating modes of the device of the present invention. Note that the correspondence relationship between the main parts shown and the symbols is as follows. 1... Loading or unloading zone, 2... Impregnation tank, 3... Liquid drainer, 4... Primary cleaning tank, 5... Secondary cleaning tank, 6... Thermosetting layer, 7... Drainer, 8...First monopole swing lift, 11...Unloading zone, 12...Loading zone, 13...Elevating and lowering rotating frame, 14...Frame lifting mechanism, 15...Frame rotating mechanism, 22...
...Storage basket, 23...Basket automatic attachment/detachment device according to the present invention, 25...Casing, 26...
...Insertion mandrel, 27...Stepping motor, 30...Drive gear, 31...Driven gear, 3
2...Removable claw, 37...Escape groove.

Claims (1)

[Scope of utility model registration request] Monopole 19 of the first monopole swing lift 8
The frame lifting mechanism 14 and the frame rotating mechanism 15
A guide shoe 24 whose tip is located below an insertion mandrel 26 which is vertically attached to the free end of the elevating and rotating frame 13, which is mounted so as to be able to rise and fall and turn according to the
A driving gear 30 attached to the lower end of a driving shaft 29 directly connected to a stepping motor 27 installed in the casing is arranged concentrically and at equal intervals with respect to the driving shaft. Attachment/detachment claw 32 for the placed basket 22
The casing is meshed with three driven gears 31 integrated with the casing, and an escape groove 37 for each of the detachable pawls is carved in the lower periphery of the casing, and the driving gear and the driven gear are driven by the stepping motor. 1. An automatic basket attachment/detachment device for fully automatic continuous impregnation equipment for porous objects, characterized in that each of the attachment/detachment claws is simultaneously rotated counterclockwise or clockwise within a horizontal plane.