JPS63267116A - Separation device - Google Patents

Abstract

PURPOSE:To aim at smooth operation by installing a position controlling device suspending a scraper, a device pressing the scraper to a cathode mother board with a roller and so on, in addition to a cathode holding and locking mechanism and a reciprocating mechanism of the scraper. CONSTITUTION:A locking mechanism is provided with a support frame 3 holding a cathode 2 and also provided with a cradle 4 mounting a head cover 2a of a cathode mother board 2b on the upper end. Next, a separation mechanism consists of a scraper 5, a hydraulic cylinder 6 and a guide roll 7. And, the scraper 5 is advanced forward by the hydraulic cylinder 6, and a knife edge is closed with a clamp starting signal. Afterward, this knife edge is inserted into space between a surface of the cathode mother board 2b and a precipitation metal 2c, separating this precipitation metal 2c. According to this device, even in case of the cathode motor board 2b different in plate thickness, smooth separating operation is executable and, what is more, the knife edge of the scraper 5 is in no case bitten in the surface of the cathode mother board 2b.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an apparatus for peeling off metal deposited on the surface of a cathode mother plate during electrolytic refining.

Normally, in zinc electrolysis, electricity is applied to a zinc electrolytic solution in an open tank using a silver-containing lead anode and an Ai cathode, metal zinc is deposited on the An cathode mother plate, and then the cathode is Pull it out to peel off the electrodeposited zinc on the surface of the mother plate.

In the present invention, when removing precipitated metal from the cathode mother plate,
The present invention relates to a stripping device that reliably strips deposited metal even from cathode mother plates of different plates n, causes little damage to the cathode mother plates, and requires short working time.

[Prior Art and Problems] A typical example of a conventional stripping device has a pedestal for suspending and holding a plurality of cathodes in alignment, and the surface of the cathode mother plate held by the pedestal and the deposited metal are separated. It has a mechanism for inserting a scraper between the electrolytic cell and peeling off the metal, and is configured so that multiple cathode mother plates lifted from the electrolytic cell can be peeled off at once (Japanese Patent Publication No. 57-38984, 513-
411637, Japanese Unexamined Patent Publication No. 57-28188).

However, since all conventional stripping devices use spring force to tighten the scraper, they have the following problem.

a. Since the thickness of the cathode mother plate is not constant, the tightening of the souffle bar becomes uncertain, resulting in excessive digging and insufficient suppression.
This causes damage to the surface of the cathode mother plate and complicates the peeling work.

b. The scraper was not inserted at the right timing, and the scraper collided with the end of the cathode mother plate, damaging the end.

C. The insertion of the scraper becomes uncertain because the cathode mother plate is driven.

d. It takes a lot of effort to align the peeled metal plates, prolonging the working time.

e. Since the scraper is inserted at approximately the same location on the end of the cathode mother plate, this location is likely to be damaged.

The inventors of the present invention solved the problem of easy damage to the scraper insertion point by making it possible to adjust the relative height of the cathode base plate to the scraper as appropriate, and also made it possible to adjust the spacing between the scraper blades to reduce the plate thickness. This technology enabled accurate peeling even for different cathode base plates, and an application for this was previously filed (Japanese Patent Application No. 138010/1981).

[Means for Solving Problems] In addition to a mechanism for suspending and holding the cathode mother plate, a reciprocating mechanism and a tightening mechanism for the scraper, the present invention provides a mechanism in which the cutting edge of the scraper advances slightly inward from the end of the cathode mother plate. By providing a position control means for temporarily stopping the scraper at the position where the scraper is pressed, and by adding a means for pressing the scraper against the cathode base plate using a roller and maintaining the pressing force constant, it is possible to The scraper can be inserted and tightened reliably and smoothly even into thick cathode motherboards.

[Structure of the Invention] According to the present invention, a fixed holding mechanism that hangs and holds a plurality of cathodes, a plurality of scrapers inserted between a cathode mother plate surface and deposited metal on the surface, and the scraper In a peeling device comprising a reciprocating mechanism and a tightening mechanism for the scraper; the scraper reciprocating mechanism includes a drive means for reciprocating the scraper, and a cutting edge of the scraper is slightly inward from the edge of the cathode base plate. position control means for temporarily stopping the scraper at the advanced position; the tightening mechanism includes rotatable tightening rollers disposed on both sides of the scraper; There is provided a stripping device characterized in that it is provided with a tightening means for pressing the scraper against the scraper and pressing the cutting edge of the scraper against the cathode base plate at a constant pressure.

In a preferred embodiment, (a) the tightening mechanism includes a tightening roller attached to the shaft ends of a pair of rotating shafts disposed on both sides of the scraper, and the tightening roller is pressed against the scraper. A device formed of a hydraulic cylinder and a hydraulic control circuit that controls the hydraulic cylinder to a constant pressure, and (b) the scraper reciprocating mechanism includes a device that detects the protruding length of a rod with a continuous scraper at its tip. A signal system is provided for temporarily stopping the rod and transmitting a tightening start signal or a tightening release signal to the hydraulic cylinder of the tightening mechanism according to the protrusion length.

On the other hand, the hydraulic control circuit of the scraper tightening mechanism is equipped with a signal system that transmits a signal to start moving the scraper to the moving hydraulic cylinder when the tightening pressure of the tightening hydraulic cylinder reaches a certain pressure. equipment is provided.

Hereinafter, a specific embodiment of the present invention will be described based on the drawings.

FIG. 1 is a schematic side view of a peeling device according to the present invention, and FIG. 2 is a schematic plan view of the same device.

As shown in the figure, the apparatus of the present invention has a cathode holding and fixing mechanism and a precipitate peeling mechanism.

The fixing mechanism and the peeling mechanism are integrally formed on the base 1, and the fixing mechanism is provided with a support frame 3 that holds the cathode 2. The support frame 3 is erected on both sides of the cathode 2 so as to suspend and hold the cathode 2, and the head bar 2 of the cathode base plate 2b is attached to the upper end of the support frame 3.
A pedestal 4 on which a is placed is provided. In addition, in order to hold the cathode 2 at a constant interval, a head par 2a is attached to the pedestal 4.
A groove is provided to insert the. Note that the means for holding the cathodes 2 at regular intervals is not limited to the above-mentioned grooves, but may be adopted as appropriate.

As shown in FIG. 2, a plurality of cathodes 2 are suspended and held in parallel on the support frame 3. As shown in FIG. On the other hand, the peeling mechanism is located on the side of the holding and fixing mechanism, and includes a scraper 5 inserted between the cathode base plate 2b and the precipitate 2C on the surface of the base plate, and a hydraulic cylinder B that reciprocates the scraper 5. The scraper 5 is composed of a drive unit and a guide roll 7 that guides the scraper 5. In addition, the above scraper 5
is constructed by laminating two plate materials so as to be in pressure contact with both sides of the cathode 2, and a cutting edge 5a is formed on the side edge of the tip end thereof.

A positioning mechanism 1G for the cathode 2 is attached to the fixing and holding mechanism. As shown in FIGS. 3 and 4, the positioning mechanism IO includes a pair of alignment bars 11a and llb located on both sides of a plurality of cathodes 2 (cathode row) suspended from the pedestal 4. It is formed by alignment hydraulic cylinders J2a to 12d that reciprocally support the alignment bar. The alignment bars 11a-11b are arranged on the cathode base plate 2 so as to pinch the cathode rows from both sides.
They are placed facing each other with a gap wider than the plate width b. Since the alignment bars 11a and llb are pressed against the side edges of the cathode base plate 2b, the surfaces of the bars are preferably made of a flexible material so as not to damage the side edges of the cathode base plate. It is located below the platform 4,
The cathodes 2 suspended on the pedestal 4 are aligned. First of all,
One alignment bar 11a is pushed forward and uniformly presses the plurality of cathodes 2 forward, and then the other alignment bar 1
1b protrudes to push back the cathode row and stop it at a predetermined position. The cathode rows are aligned along the alignment bars 11a, 11b by being pressed alternately from both sides by the alignment bars 11a, 11b.

In addition, there is peeling below the aligned cathode rows,
A cooling plate 50 is provided between the conveyor 40 and the cathode row to temporarily hold metal plates that peel off and fall.
is interposed.

Next, the scraper reciprocating mechanism is provided with a position control means 20 that temporarily stops the scraper at a predetermined position and simultaneously operates the scraper tightening mechanism. A specific example of the position control means 20 is shown in FIG. 5. As shown in FIG. It consists of In addition, it is preferable to use a metering cylinder for the sub cylinder 22, and for the main cylinder 2.
1 indicates the original position P1.1 at the start of operation. Rod forward position P2
, reed switches 24a to 24c are installed that operate at the stroke limit position P3 of low and 2nd positions. The auxiliary cylinder 22 is connected to the main cylinder 21 by a hydraulic circuit 25 so as to be operated by receiving the hydraulic pressure accompanying the movement of the rod of the main cylinder 21.
Operates at the rod forward position P4 of J-Z11
-- P -y / -iQj u ko (%lJ
-ah (1,% 1 1 Lej rod forward position P
4 corresponds to a position where the cutting edge 5a of the scraper 5 slightly penetrates inward from the side edge of the cathode base plate 2b and faces the end surface of the deposited metal. The reed switches 24a to 24d are a control system 23 that transmits control signals to the scraper tightening mechanism 30.
are connected to each other. In addition, in FIG. 5, 25b and 25c
, 25e is a hydraulic pressure switching valve, and 25d is a pressure switch. When the rod of the main cylinder 21 reaches P4 from PI, the reed switch 24d is activated to temporarily stop the forward movement of the main cylinder 21, and at the same time transmits a tightening start signal to the scraper tightening mechanism 30. Then the main cylinder
21 receives the forward movement signal from the tightening mechanism 30, and when the rod moves forward again and reaches the predetermined position 21P2, the reed switch 24b is activated and a tightening release signal is transmitted to the tightening mechanism 30. When the stroke of the rod reaches P3, the main cylinder is stopped by the reed switch 24c.

The tightening mechanism 30 is installed for each of the plurality of scrapers 5, as shown in FIGS. 8 to 8, and is provided behind the pedestal 4. The tightening mechanism 30 has a pair of rotating shafts 31a and 31 disposed on both sides of the cathode base plate.
b, tightening rolls 32a, 32b attached to the lower ends of the rotating shafts 31a, 31b, and the rotating shaft 31a.

A pair of sector gears 33a attached to the upper end of gear 31b.

33b and a hydraulic cylinder 34 that drives them. The tightening rollers 32a, 32b are integrally fixed to rotating shafts 31a, 31b via arms 36, and are rotated by the rotating shafts. On the other hand, the sector gears 33a, 33b are attached to the upper ends of the rotating shafts 31a, 31b, and mesh with each other. Further, one rotating shaft 31a is connected to the hydraulic cylinder 34 via an arm 35. When one rotating shaft 3.1a is rotated by the hydraulic cylinder 34, the sector gear 33
The other rotating shaft 31b is rotated in the opposite direction through the shafts a and 33b, and the pair of tightening rollers 32a and 32b respectively attached to the ends of these shafts are pressed against the scraper surface or pulled away from the scraper surface. It will be done. The hydraulic cylinder 34 is provided with a hydraulic control circuit 37 equipped with a pressure switch 25d for ensuring a constant tightening pressure.

The pressure switch 36 supplies hydraulic pressure to the hydraulic cylinder 34 until it reaches a certain pressure. When the rod of the hydraulic cylinder 34 is extended and the tightening rollers 32a and 32b are pressed against the scraper surface and the hydraulic cylinder 34 reaches a certain pressure, the pressure switch 25d stops the supply of hydraulic pressure, and accordingly, the control system 23 A forward movement start signal is transmitted to the hydraulic cylinder 8 via the hydraulic cylinder 8.

Next, the operation of the above peeling device will be explained.

When a plurality of cathodes 2 are placed on the pedestal 4, the positioning hydraulic cylinders 12a and 12b are activated to move the alignment bar IQ.
A is moved forward to press the cathode row forward, and then retreated to the original position. In response to the retreat signal, the other hydraulic cylinders 12c and 12d are operated to push out the alignment bar 10b, push back the cathode row, and then retreat to the original position. The cathode rows are aligned along the alignment bars 10a, 10b by being alternately pressed from the sides.

After the above alignment operation is completed, the hydraulic cylinder 6 moves the scraper 5 from PI to the tightening position P4 by 1'v 13
1S+r Target 2 Rei Se Pattern 2 1 Shigen-147#
Umomi D -1-) -1h The cutting edge 5a of -1ζ5 advances slightly inward from the cathode mother plate side edge and corresponds to the position facing the side edge of the deposited metal. The scraper 5 is temporarily stopped at the position P4, and at the same time a tightening start signal is transmitted to the tightening mechanism 30. In response to the tightening start signal, the hydraulic cylinder 34 operates, and the sector gears 33a, 3
The rotating shafts 31a, 31b are rotated through the shafts 3b, and the tightening rolls 32a, 32b attached to the ends of the shafts are pressed against the scraper surface to close the cutting edge 5a. When the clamping pressure reaches a certain value, a forward start signal is transmitted from the clamping mechanism 30 to the hydraulic cylinder 6, and the scraper 5 moves forward again while clamping the cathode surface from both sides, so that the cutting edge 5a touches the cathode base plate. It is inserted between the surface and the deposited metal 2C.

When the scraper 5 advances further and reaches a position corresponding to position P2, a tightening release signal is transmitted to the tightening mechanism 30, and the hydraulic cylinder 34 releases the tightening roller 32a.

32b is pulled away from the scraper surface. The precipitated metal 2C adhering to the surface of the cathode mother plate is gradually peeled off from the insertion side as the scraper 5 advances, and when the tightening pressure is released, there is a gap between the surface of the cathode mother plate and the precipitated metal 2c. The inserted scraper blade edge 5a opens, and the deposited metal 2C is separated from the scraper surface and falls onto the conveyor 40 below.

When the scraper 5 advances to the stroke limit P3, the reed switch 24c stops the operation of the hydraulic cylinder 6.

When all of the plurality of scrapers 5 advance to their stroke limits and their respective peeling operations are completed, the scrapers 5 retreat, and the peeled deposited metal plates fall down in the conveying direction and are aligned on the cushion plate. The metal plates are dropped onto the conveyor 40 in an aligned state.
Exported by 0.

[Effects of the Invention] Since the device of the present invention has a tightening mechanism that ensures a constant tightening pressure, it is possible to perform smooth stripping work even on cathode base plates with different plate pressures, and the blade edge of the scraper is No problems such as digging into the surface of the cathode mother plate occur.

Further, since it has a means for aligning the cathode base plate by preventing it from shaking and a means for controlling the tightening position of the scraper, there is no misalignment between the cathode base plate and the scraper, and the peeling operation can be performed reliably.

Since the separated deposited metal plates are sequentially overturned in an aligned state, the carrying out operation is easy and the working time is significantly shortened.

[Brief explanation of the drawing]

FIG. 1 is a schematic side view of a peeling device according to the present invention, and FIG. 2 is a schematic plan view of the same device. FIG. 3 is a partial sectional view showing the alignment mechanism, and FIG. 4 is a partial plan view thereof. Fig. 5 is a circuit diagram showing the scraper position control means, Figs. 6 to 8 show the tightening mechanism, Fig. 6 is a schematic plan view thereof, Fig. 7 is a partial sectional view thereof, and Fig. 8 is a FIG. 3 is a sectional view of a tightening roller portion. In the drawings, 2-cathode, 2b-cathode mother plate, 5-scraper, 5a-scraper cutting edge, 6-hydraulic cylinder, 10-positioning mechanism, 20-position control means,
30-Tightening mechanism, 32a, 32b-tightening roller, 34
-Hydraulic cylinder-0 Patent applicant Mitsubishi Metals Co., Ltd. agent Patent attorney Masahiro Matsui and one other person Figure 1 Figure 4

Claims (4)

[Claims] (1) A fixed holding mechanism that suspends and holds a plurality of cathodes, a plurality of scrapers inserted between the cathode mother plate surface and the deposited metal on the surface, a reciprocating mechanism for the scrapers, and a reciprocating mechanism for the scrapers; a tightening mechanism; the scraper reciprocating mechanism includes a drive means for reciprocating the scraper; The tightening mechanism includes a rotatable tightening roller disposed on both sides of the scraper, and a position control means for temporarily stopping the scraper; A peeling device characterized in that it is provided with a tightening means for pressing the cathode base plate against the cathode base plate at a constant pressure. (2) The above-mentioned tightening mechanism includes a tightening roller attached to the shaft ends of a pair of rotating shafts disposed on both sides of the scraper, a hydraulic cylinder that presses the tightening roller against the scraper, and a hydraulic cylinder that presses the tightening roller against the scraper. 2. The device according to claim 1, which is formed from a hydraulic control circuit that controls the pressure to a constant pressure. (3) The scraper reciprocating mechanism detects the protruding length of a rod with a scraper connected to its tip and temporarily stops the rod, and also causes the hydraulic cylinder of the tightening mechanism to tighten the rod according to the protruding length. A signal system is installed to transmit a tightening start signal or a tightening release signal, and on the other hand, the hydraulic control circuit of the scraper tightening mechanism is equipped with a signal system that transmits a tightening start signal or a tightening release signal. 2. The device according to claim 1, further comprising a signal system for transmitting a signal to start moving the scraper to the moving hydraulic cylinder. (4) A cathode positioning mechanism is attached to the fixing and holding mechanism, and the positioning mechanism includes a pair of alignment bars arranged on both sides of the plurality of cathodes, and alternately aligning the alignment bars to the end of the cathode mother plate. 2. The device according to claim 1, comprising a reciprocating means for abutting against each other.