JPH10156838A - Die surface cleaning device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a die surface cleaning device which can scrape off the lower surface of a die in the narrow space of the discharge part of a reactor by a scraper for every batch without manual operation at a constant angle and under a constant pressure as if done by a skilled operator to clean the surface promptly and remove resin adherent to the scraper at an appropriate chance. SOLUTION: An apparatus is equipped with a knife-shaped scraper 20 which contacts the lower surface of a die 27 having holes fixed to the discharge part on the lower side of a reactor holding a viscous molten resin by the end part of one side and has a prescribed contact angle, a pressurizing means 22 which is installed near the scraper 20 and pressurizes the scraper 20 upward to the lower surface of the die 27, a moving means 30 which holds the scraper 20 and moves the side end part of the scraper 20 along the holes 26 of the lower surface of the die 27, a position moving means 30 having a guide means which scrapes off the resin hanging from the holes 26 of the die 27 or the residual resin by the side end part of the scraper 20 to clean the lower surface of the die 27 and guides the moving means 30 movably between a work position and a waiting position, and an adherent resin removing means.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for cleaning a die surface, and more particularly, to a discharge section provided below a reactor in a batch polymerization production method of synthetic resin such as polyester or polyamide which is deteriorated by heating in air. And a die surface cleaning device for cleaning the die surface.

[0002]

2. Description of the Related Art Conventionally, in the production of polyester, for example, polybutylene terephthalate (PBT), a viscous resin after the reaction is passed through a hole of a porous die head from a discharge portion of a reaction vessel, and is drooped under pressure as a strand. Let
There is a molding method for cutting to a specified size. In the case of a batch method using such a molding method, when the discharge of the molten resin from the reaction vessel is completed, the closing mechanism attached to the discharge section flow path to the die head is closed. At this time, the resin remaining in the flow passage is inevitably leaked from the closing mechanism due to the feature of the vertical structure. Therefore, by the time the new resin descends and drops next time, these leaked resins adhere to the die head in a number of shapes such as teardrops, thin films, etc., including threads. In some cases, the hole in the die head may be closed by a shutter valve for reasons such as controlling the amount of leaked resin or suppressing deterioration of the leaked resin due to exposure to air. Also at this time, the resin remains in a small gap between the die head and the shutter valve in a thread-like or irregular shape and adheres to the lower surface of the die. In any case, the residual resin adhered to the inside of the discharge channel and to the die surface is heated and oxidized and deteriorated by the time of the next dripping of the new resin.

[0003] For this reason, the residual resin or the deteriorated resin adhering to the lower surface of the die must be removed at the start of the next batch. And overreacted residue due to the residue, which is mixed with the strand of the newly formed non-defective resin and causes deterioration in physical properties and appearance. In order to prevent this, the lower surface of the die is manually scraped and cleaned.

[0004]

However, the cleaning work on the lower surface of the die by hand must be performed for each batch at the time of dripping new resin, and the cleaning work must be performed on the lower side of the reactor. The valve, heater (heater), piping, equipment for the next process, etc. are arranged, and must be carried out in a tight space and in an upward unreasonable posture, which poses safety problems and poor workability. There is a problem that it takes a long time to worsen and lowers productivity. The lower surface of the die is rectangular, and scraping of the resin that hangs under pressure is manually performed with a metallic spatula at a substantially constant angle with respect to the lower surface of the die in the longitudinal direction of the die at a scraping speed of 350. ~ 940mm / s
However, there is a problem in that the lower surface of the die has holes and irregularities, the angle varies depending on the operator, the scraping state is different, and skill is always required to clean the die.

It is an object of the present invention to clean the lower surface of a die in a narrow space without manual intervention, and by means of a scraping plate, as with a skilled worker, a constant lower surface of the die. Scrap the dripping resin and adhered resin every batch at an angle and with a constant pressing force, clean quickly and cleanly, and easily and quickly remove the adhered resin adhered to the scraping plate from the scraping plate The purpose is to remove.

[0006]

SUMMARY OF THE INVENTION The present inventors consider a narrow installation space and a space for repair, mount a multi-axis manipulator movable to a standby position on a support table, and provide a lower surface of a die. To solve the above problems by finding the material, optimal contact angle, pressing force, and surface treatment method of the scraping plate, and finding the optimal timing for removing the resin adhered to the scraping plate and its removing means. It was understood that it was possible to complete the present invention.

That is, according to the present invention, a spatula having a predetermined contact angle is formed by contacting one end of a side with a lower surface of a die provided with a plurality of holes and provided at a lower discharge portion of a reaction vessel holding a viscous molten resin. A scraping plate, and pressing means provided near the scraping plate to press the scraping plate against the lower surface of the die,
Moving means for holding the scraping plate and moving a side edge of the scraping plate along a plurality of holes on a lower surface of the die, wherein a hole of the die is formed by a side edge of the scraping plate. An object of the present invention is to provide a die surface cleaning device for scraping a dripping viscous molten resin or a residual resin and cleaning a lower surface of the die.

Further, the present invention provides a position having a support for supporting the moving means and the pressurizing means, and a guide connected to the support and guiding the support to be movable between a working position and a standby position. The present invention provides a die surface cleaning device including a moving unit.

Further, according to the present invention, two plate-like members are formed in a C-shaped cross section, two opposing sides form a gap with a constant interval, and the intersection angle formed by the two opposing plate surfaces forms a predetermined angle. An adhesive resin removing means having a support member for supporting the scraping plate and a passing means for moving the scraping plate so as to pass through the gap between the two opposing plate surfaces; An object of the present invention is to provide a die surface cleaning device for removing resin.

[0010] The present invention also provides a die surface cleaning device, wherein the moving means also functions as a passing means.

Further, the present invention provides a die surface cleaning apparatus in which a scraping plate to which the adhered resin adheres is solidified until the adhered resin can be peeled off, and then passes through a gap of the adhered resin removing means.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 4 to 6, a scraping plate 20 is a flat spatula-shaped flat plate, one end of which can be pressed against a lower surface 27a of a die and hangs down from a hole of the die. Viscous molten resin 51 and adhered resin 5 adhered to the lower surface of die
Anything that can remove 0 can be used. Further, the shape of the scraping plate is preferably a wedge-shaped cross section from the center side of the scraping plate toward the side end near the side end. The material of the scraping plate is one that does not damage the lower surface of the die, for example, a copper-based metal having a lower hardness than the material of the die is desirable, for example, brass, phosphor bronze that has elasticity so as to be in close contact with the lower surface of the die. preferable. The thickness D of the scraper is 0.5 to 2.0m
m is desirable, and especially 1.2 mm is preferable because of good contact with the lower surface of the die.

The contact angle B of the scraping plate is an angle (a sharp angle) between the lower surface of the die and the plate surface of the scraping plate (see FIG. 5), and the contact angle is desirably 0 to 60 degrees, preferably 30.
Degrees to 45 degrees. When the angle is 60 to 90 degrees, the scraping effect is not sufficient because the scraping plate fluctuates during operation, and irregularities on the die surface are caught.

The scraping plate only needs to be able to easily remove the viscous molten resin or the residual resin at the time of scraping, and it is also desirable to perform a surface treatment. The surface treatment is preferably a treatment that reduces the affinity with the adhered resin, such as a titanium carbide (TIC) treatment by physical vapor deposition on the brass surface. Then, it is desirable to finish buffing with buff No. 400. Further, in order to perform the proper peeling and scattering of the adhered resin, the thickness of the scraping plate is adjusted, and the optimum
mm.

The moving means is a pneumatically driven X as shown in FIG. 1 in order to operate similarly to the scraping operation of the lower surface of the die manually with good reproducibility in a small installation space.
The YZ three-axis manipulator 18 was used. Then, the scraping plate 20 is rotatably attached to the tip end portion 16 of the shaft of the Z-axis air cylinder, and the same operation as a manual operation is performed by interlocking operation with another XY two-axis air cylinder. The scraping speed becomes equal to the moving speed on the X-axis by supplying air to the X-axis air cylinder. The moving speed depends on the viscosity of the resin, but is preferably in the range of 300 to 1200 mm / sec, and more preferably 1000 mm / sec. Of course, the drive may be electric, hydraulic, or the like.

The pressurizing means is constituted by providing a cam mechanism 22 near the scraping plate 20 at the tip of the shaft of the Z-axis air cylinder as shown in FIGS. The vertical movement of the Z-axis air cylinder is converted into a rotational movement by a cam mechanism, so that the scraping plate connected to the cam always appropriately presses upward. The pressing force depends on the material of the scraping plate, but is desirably 4 to 7 kg / cm ² . The upward pressure is not limited to the cam mechanism but may be air or hydraulic pressure, or may be an elastic member (for example, a spring or rubber) or an electric means (for example, repulsion by an electromagnetic coil).

As shown in FIGS. 2 and 3, the position moving means 30 is fixed in consideration of a narrow installation space, a space for repair, and a standby position M of a work position L for performing a scraping operation by a scraping plate. The rotating frame 32 is supported by the supporting shaft 31 and is rotatable around the supporting shaft. The moving frame 35 is connected to the distal end of the rotating frame and can move the position greatly. The fixed support 37 is a distal end 35A on the side opposite to the support shaft of the moving frame 35.
Is detachably supported, and has a height from the floor surface to the bottom of the moving frame. The moving frame is a scraping plate 2
0 is the fixed support 3 at the work position L where the scraping work is performed.
7. Stand still on the capital of No. 7 and fixed to the fixed support which is the support base with set bolts.

The position moving means 30 has a three-axis manipulator 18 as a moving means mounted on the moving frame, and easily and easily moves between a working position L where the scraping plate performs a scraping operation and a standby position M where repair is easy. It is possible to turn quickly. A motor or the like may be provided on the support shaft that supports the rotating frame and the tip of the rotating frame to facilitate rotation and movement of the rotating frame and the moving frame. The column forms a support base, and the support shaft, the moving frame, the rotating frame, and the motor form guide means. In addition to the above-described rotational movement, the position moving means provides a wheel or axle to the moving frame, and provides a rotating handle or a motor to rotate and reciprocate the moving frame on the rail to move the three-axis manipulator to the working position. May be rotated and reciprocated between the position and the standby position.

The attached resin removing means 40 is, for example, as shown in FIG.
As shown in FIGS. 7 and 8, immediately before the scraping plate 20 moves in the longitudinal direction (X 'axis) of the die 27, a point Y'DN on the horizontal axis (Y' axis) of the scraping plate is set. Is provided. The adhering resin removing means 40 includes upper and lower two plate-like bodies 41 and 4.
2 in the form of a C-shaped cross section and two opposite sides 41a, 4
There is a support member 43 that forms a constant gap S with an interval 2a of 5 mm or less and that supports an intersection angle C between the opposing plate surfaces of 160 degrees. In addition, the plate-like body is
In the vicinity of the side, each is formed in a wedge-shaped cross section toward the side. Incidentally, the adhered resin removing means may be provided on the X "axis or the Y" axis, and in some cases, on the X "'axis in the same manner as described above.

The gap S between two opposing sides of the plate is preferably 3.0 mm to 5 mm when the plate has a thickness of 1.2 mm. If it exceeds 5 mm, the impact to the adhered resin is small, and it is difficult to remove the adhered resin. If it is less than 3.0 mm, interference with the scraping plate that passes therethrough may occur. Also, the intersection angle C is desirably 140 to 180 degrees, preferably 160 to 180 degrees.
170 degrees. If it is less than 140 degrees, it becomes difficult to remove the adhered resin. Further, the reason why the cross section is formed in a wedge shape is to apply an appropriate impact to the adhered resin to scatter it.

The scraping plate scrapes the dripping viscous resin or residual resin on the lower surface of the die, cools the adhered resin with time, crystallizes and solidifies, or removes the non-crystalline resin similarly. After solidification to a certain extent, the liquid is passed through the gap between the adhering resin removing means by the passing means.
If the elapsed time after the scraping is short and the crystallization of the adhered resin has not progressed, the adhered resin cannot be sufficiently removed from the scraping plate. After the scraping, the timing T until the adhered resin is appropriately solidified depends on the type of the resin. For example, when the resin is polybutylene terephthalate (PBT), it is preferably at least 3 minutes at room temperature cooling, and more preferably 5 to 45 minutes. Minutes. The reason for setting the timing T to 3 minutes or more is that if the time T is less than 3 minutes, crystallization and solidification of the resin do not sufficiently proceed, and it becomes difficult to separate the resin from the scraping plate. The longer the timing T, the more the solidification proceeds and the easier it is to peel off.
Although there is no practical upper limit, usually 180
Minutes. Further, the moving means 18 may also have the function of the passing means.

[0022]

EXAMPLES The present invention will now be described specifically with reference to examples, but the present invention is not limited to these examples. FIG.
8 are diagrams showing one embodiment of the present invention. In FIG. 1, reference numeral 10 denotes a die surface cleaning device using a three-axis manipulator 18. The die surface cleaning device 10 includes a first air cylinder 11 disposed in the X-axis direction and a first air cylinder 1.
A first head 12 fixed to the tip of one shaft and movable in the X-axis direction, a second air cylinder 13 fixed to the first head 12 and arranged in the Y-axis direction, and a shaft tip of the second air cylinder 13 A second head 14 fixed to the section and movable in the Y-axis direction, a third air cylinder 15 fixed to the second head 14 and arranged in the Z-axis direction, and fixed to a shaft tip of the third air cylinder 15 A third head 16 is provided.

The position of the third head 16 can be changed on the XYZ axes by adjusting the amount of air to the first to third air cylinders 11, 13, and 15, respectively. Further, since the second and third air cylinders are fixed and air is introduced only into the first air cylinder 11, the third head 16 can be moved in parallel with the X-axis direction. First, second, third air cylinders 11, 13, 15 and first, second, third heads 12, 1
Reference numerals 4 and 16 constitute a three-axis manipulator 18 as moving means.

The third head 16 has a support shaft 2 parallel to the Y axis.
1 is provided. The support shaft 21 is a rectangular scraping plate 20 whose one edge 20a is a lower surface 2 of a die to be described later.
A side end 20b facing the side end 20a is pivotally supported so as to be in contact with 7a. In the vicinity of the support shaft, the upper plate surface 20c of the scraping plate and the lower surface 27 of the die are provided.
An angle adjusting mechanism 23 capable of adjusting a contact angle B with the horizontal plane A corresponding to a from about 0 to 90 degrees is provided. Further, the third head is provided with a cam mechanism 22 as a pressing means, and in conjunction with the vertical movement of the third head, constantly presses the edge 20a of the scraping plate to the horizontal plane A side with a pressure of 4 to 7 kg / cm.
Pressurization is possible with ² . The scraping plate 20 is made of brass, has a plate thickness of 1.2 mm, and has a plate width equal to the die width. The scraping plate 20 may be subjected to a Teflon treatment as a surface treatment, and then a No. 400 buff finish.

Reference numeral 25 denotes a lower discharge portion of a reaction vessel holding a polymerization product of polybutylene terephthalate, which is a viscous molten resin. FIG. 1 shows a case where the discharge portion 25 is seen from above. A plurality of holes 26 (in this case, about 60 rows in two rows) through which polybutylene terephthalate (hereinafter referred to as resin) in the reactor is suspended as strands are provided in the discharge section 25.
And a shutter valve (not shown) that closes the hole 26 in the substantially horizontal lower surface 27a of the die. The hole 26 is provided along the X ′ axis parallel to the X axis in the longitudinal direction of the rectangular die 27.

In this embodiment, by adjusting the amount of air to the first, second, and third air cylinders, the edge 20a of the scraping plate is positioned on the lower surface 27a of the die. The scraping plate 20 is adjusted by the support shaft 21 so that the contact angle B contacts the lower surface 27a of the die at 45 degrees. Further, the cam mechanism 22 presses one side end 20a parallel to the side end 20b upward with a pressing force of 5 kg / cm ² . Further, by supplying air to the first air cylinder, the scraping plate 20 is moved at a speed of 300 in the X′-axis direction.
From 1200mm / sec. In this embodiment, the optimum speed is adjusted to 1000 mm / sec.

In FIGS. 2 and 3, reference numeral 30 denotes a movable gantry as a position moving means. The movable gantry 30 has a fixed support shaft 31 and a length of about 30 cm rotatably supported around the support shaft 31. And a moving frame 35 having a length of about 1 m, which is rotatably connected to the tip 32a of the rotating frame and is movable on the floor surface 33. The movable frame is provided with three auxiliary frames 36 at equal intervals in the longitudinal direction. The fixed support 37 is the moving frame 3
5 detachably supports the bottom surface of the distal end portion 35A on the side opposite to the support shaft, and has a height from the floor surface 33 to the bottom of the moving frame. The moving frame rests on the stigma of the fixed column 37 at the working position L where the scraping plate 20 performs the scraping operation. Then, the moving frame 35 is fixed to the fixed column 37 with set bolts. The fixed column 37 is detachable in consideration of the floor and the convenience of repair and repair work.
Wheels or the like may be provided to facilitate movement. Reference numeral 38 denotes a stopper, which fixes the working position when moving. The bottom surface of the tip 32a of the rotating frame has a support 39 similar to the fixed support 37.
It is supported by.

The first air cylinder 11 of the three-axis manipulator 18 is mounted on the moving frame 35, and the moving frame 35 is moved to the working position L on the X '''' axis in FIG. 3 parallel to the X axis.
To a standby position M on the Y "" axis where repair is easy. This movement is due to the resin closing valve, heating jacket, die heater, die nozzle, die hole shutter valve near the discharge part of the reaction vessel, piping and wiring to these devices, etc., and the installation space at the working position L is small. Therefore, in order to secure a sufficient space at the time of repair, sufficient work can be performed without interference. That is, the moving frame 35 is moved only from the working position L parallel to the X ″ ″ axis around the support shaft 31 so that only the turning frame 32 turns to move the moving frame 35 in parallel. The moving frame 35 rotates about the portion 32a, and Y ″ ″
It is adapted to move to a standby position M parallel to the axis.
When moving from the standby position M to the work position L, the movement is reversed. The stopper 38 defines a position when the moving frame 35 is installed at the working position.

FIG. 8 is a coordinate axis diagram for explaining the cleaning operation of the lower surface of the die of the scraping plate 20. The scraping operation point of the scraping plate 20 is indicated by a point X′US → point X′UN, and the returning operation point of the scraping plate 20 in a horizontal state is indicated by a point X′DN → point X′DS. Further, the horizontal movement and return of the scraping plate 20 are defined by the points X'UN → X'DN and X'DS.
→ Shown by point X'US. FIG. 1 shows a main part of the coordinate diagram of FIG. 1, 7 and 8, reference numeral 40 denotes an adhesion resin removing mechanism which is an adhesion resin removing means. The adhesion resin removing mechanism 40 is configured such that the edge 20a of the scraping plate 20 contacts the lower surface 27a of the die and the length of the die is reduced. After moving in the direction of the X 'axis to scrape off the adhered resin 50 on the lower surface 27a, it waits at the origin (XDS) until the next batch starts, and the scraping plate 20 moves in the longitudinal direction of the lower surface 27a of the die. (Y 'axis) with the scraping plate 20 horizontal just before
It is provided above (for example, Y′DN). (In FIG. 1, the attached resin removing mechanism 40 is shown away from the point Y′DN.) The attached resin removing mechanism 40 is formed by removing upper and lower two plate-like removing plates 41 and 42 into a C-shaped cross section. A constant gap S where the interval between the two opposite sides 41a and 42a of the removing plate is 4 mm is formed. Further, the support arm 43 supports the intersection angle C between the opposed plate surfaces 41b and 42b so as to form 160 degrees. The removal plates 41 and 42 are formed in a wedge-shaped cross section toward the sides 41a and 42a in the vicinity of the two opposing sides 41a and 42a, respectively. Further, the horizontal scraping plate 20 is fixed to the tip of the shaft (third head 15) of the third air cylinder, and supplies air to the second air cylinder 13 which is also a passage means, and the second head 1
4 is moved on the Y′-axis, so that the scraping plate 20 is moved.
Are passed between the gaps S as shown in FIG. When the moving frame 35 moves from the work position L to the standby position M, the support arm 43
It moves to the standby position together with the connecting arm 45 connected to the third arm 3.

Next, the operation of cleaning the lower surface of the die will be described (see FIGS. 1 and 8). The lower surface of the die of the reactor is closed with a shutter valve. When the polymerization reaction in the reactor is completed and the resin drooping starts, a shutter valve (not shown) opens the hole 26 of the die. At this point, the new (regular) resin after the polymerization reaction has not flowed down to the flow path leading to the die because the discharge valve of the reactor is closed. Upon receiving the shutter valve opening signal S1, the three-axis manipulator 1
Air is supplied to the first air cylinder 11 of No. 8, the first head 12 moves the X axis from the origin O to the point XN, and the scraping plate 20 moves from the origin XDS, which is the standby position, to the point XDN. At the point XDN, the limit switch mounted in the first air cylinder 11 is kicked, and the signal S reaching the point is reached.
Send 2. By this signal S2, air is supplied to the second air cylinder 13 of the three-axis manipulator 18 and the second
The head 14 moves, and the scraping plate 20 moves to the point X′DN. During this time, the adhered resin on the scraping plate 20 that has been scraped off in the previous batch and has passed the timing T25 of appropriately solidifying passes through the gap S formed by the removal plates 41 and 42 of the adhered resin removing mechanism 40, The impact force generated at that time completely peels off the scraping plate 20.

When the scraping plate 20 reaches the point X'DN, air is supplied to the first cylinder 11 by the arrival signal S3, the first head 12 moves to the origin O side, and the scraping plate 20 moves to the point X'DN. Move towards DS. When the scraping plate 20 reaches the point X'DS, the limit switch in the first air cylinder is kicked, and the reaching signal S4 is output from the slit cock valve near the die in the flow path from the discharge valve of the reactor to the die. Order to open and start dripping of poor quality resin of previous batch remaining in the flow path. After a lapse of a certain time from the start of dripping of the poor quality resin, when the time signal S5 is received,
The air is supplied to the third air cylinder 15, the third head rises, and the driving force conversion by the cam mechanism on the third head 16 causes the side end 20 a of the scraping plate 20 to contact the die 27 with the contact angle B.
It is pressed at 45 degrees with a pressure of 5 kg / cm ² . This pressure is received as the point X'US arrival signal S6 of the scraping plate 20, and the air is supplied again to the first air cylinder 11, the first head 12 moves to the point XN, and the scraping plate 20 moves to the point X'U.
It moves toward N at a predetermined moving speed of 1000 mm / sec. By this movement, the edge 20a of the scraping plate 20 cleans the lower surface 27a of the die 27. After that, the scraping plate 20 moves along the path shown in FIGS.
→ Point X′DS → Point X′US → Point X′UN are repeated a predetermined number of times, and the scraping operation is repeated.

Point X'UN → point X'DN and point X'DS
→ The operation of the point X'US is that the scraping plate 20 receives the signals S7 and S8 that have reached the respective arrival points, thereby pressing the die 27 and returning the scraping plate 20 to a horizontal state. Is shown. Thus, teardrops formed by dripping of residual resin and poor quality resin adhered around the hole 26 of the die.
The thread-like leaking resin is swept away from the die surface. The scraping operation is set to be repeated for a predetermined time,
At the end of that time, the scraping plate 20 is moved to the origin X
Return to DS. Upon receiving the return signal S9, the discharge of the regular resin from the reaction vessel is performed by opening the discharge valve. A sequencer controls the series of operations of the three-axis manipulator 18, the opening and closing of the discharge valve and the slicott cock valve of the reactor, and the opening and closing of the die shutter valve. 3
The axis manipulator 18 is disconnected from this sequencer,
It is controlled so that each axis can operate independently.

As described above, although there is only a small space near the lower surface of the die, the scraping plate 20 is moved from the standby position M to the working position L by the movable frame 30, that is, by the movable frame 35 and the rotating frame 32. To the scraping start position N without interfering with many devices and members in the lower part of the reaction vessel.
Further, the third head 16 is provided with an angle adjusting mechanism 23 and a cam mechanism 22, and the scraping plate 20 is made of brass of a suitable shape and thickness, and the movement speed and other operations are controlled by a sequencer. Thus, the scraping plate 20 can be pressed against the lower surface of the die at an optimum contact angle and pressure to repeat the scraping operation.

As a result, as shown in FIG. 4, the dripping resin 51 or the residual resin 50 can all be wiped cleanly and adheres to the vicinity of the side edge 20a of the scraping plate. After the elapse of the solidification timing T, the adhered resin 50 adhered to the scraping plate 20 passes through the gap S of the adhered resin removing mechanism 40 as shown in FIG.

Since the scraping plate 20 has a Teflon surface treatment and has a suitable finish, and the adhesion resin removing mechanism 40 has a suitable shape, a suitable gap of 4 mm, and a crossing angle of 160 degrees, Removal plate 4 when passing through the gap
Due to a slight impact with 1, 42, the adhered resin 50 is separated from the scraping plate 20, broken, and scattered around. For this reason,
The lower surface of the die can be quickly and cleanly cleaned without using humans, and the removal of the adhered resin 50 on the scraping plate 20 can be performed very easily and quickly.

[0036]

As described above, according to the present invention,
To clean the lower surface of the die in a narrow space, it is fixed to the lower surface of the die without manual labor and with a specific material and a specific surface treated scraping plate like a skilled worker The dripping resin and adhered resin can be scraped every batch at an angle and with a constant pressing force, and can be cleaned quickly and cleanly, and the adhered resin adhered to the scraping plate can be easily and quickly measured by timing. Can be removed.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view of a three-axis manipulator and an attached resin removing mechanism of a die surface cleaning device according to the present invention.

FIG. 2 is a front view of a movable base on which the three-axis manipulator of the present invention is mounted.

FIG. 3 is a plan view of the movable gantry shown in FIG. 2;

4A and 4B are cross-sectional views illustrating a scraping state of a scraping plate, wherein FIG. 4A is a diagram when a resin is drooped, FIG. 4B is a diagram when a viscous molten resin or a residual resin is scraped, and FIG.

FIG. 5 is a sectional view showing a contact angle of a scraping plate with a lower surface of a die.

FIG. 6 is a cross-sectional view showing a state where a scraping plate is pressed against a lower surface of a die.

FIG. 7 is a sectional view showing a state in which the scraping plate passes through a gap of the adhesion resin removing mechanism.

FIG. 8 is a coordinate axis diagram for explaining a cleaning operation of the lower surface of the die.

[Explanation of symbols]

 Reference Signs List 10 die surface cleaning device 11 first air cylinder (passing means) 18 3-axis manipulator (moving means) 20 scraping plate 22 cam mechanism (pressing means) 26 hole 27 die 30 moving gantry (position moving means) 40 removal of adhered resin Mechanism (adhesive resin removing means) 41, 42 Removal plate (plate-like body) 43 Support arm (support member) 50 Adhesive resin B Contact angle C Intersection angle S Gap

Claims (5)

[Claims] 1. A spatula-shaped scraper having a predetermined contact angle by contacting one side edge to a lower surface of a die provided with a plurality of holes and provided at a lower discharge portion of a reaction vessel holding a viscous molten resin. Plate, pressing means provided in the vicinity of the scraping plate for pressing the scraping plate against the lower surface of the die, holding the scraping plate and holding the edge of the scraping plate at the lower surface of the die. Moving means for moving along the plurality of holes, and scraping viscous molten resin or residual resin dripping from the holes of the die by means of a side edge of the scraping plate to clean the lower surface of the die. A die surface cleaning device. 2. A position moving means having a support for supporting the moving means and the pressurizing means, and a guide connected to the support and guiding the support so as to be movable between a working position and a standby position. The die surface cleaning device according to claim 1, further comprising: 3. The two plate-shaped members have a C-shaped cross section, and two opposing sides of the plate-shaped members form a gap with a constant interval, and the two opposing plates have a C-shape.
An adhering resin having a support member for supporting an intersection angle between two plate surfaces to form a predetermined angle, and a passage means for moving a scraping plate so as to pass through the gap between the two opposing plate surfaces. The die surface cleaning apparatus according to claim 1 or 2, further comprising a removing means for removing the resin adhered to the scraping plate. 4. The die surface cleaning apparatus according to claim 1, wherein the moving unit has a function of the passing unit. 5. The scraping plate to which the adhered resin has adhered is solidified until the adhered resin can be peeled off, and then passes through a gap of the adhered resin removing means. A die surface cleaning device as described.