WO2020170620A1

WO2020170620A1 - Device and method for removing deposits

Info

Publication number: WO2020170620A1
Application number: PCT/JP2020/000130
Authority: WO
Inventors: 正俊望月; 豊吉野
Original assignee: ポリプラスチックス株式会社
Priority date: 2019-02-19
Filing date: 2020-01-07
Publication date: 2020-08-27
Also published as: CN113439017B; CN113439017A; JP7223595B2; TW202039209A; TWI829847B; JP2020131537A

Abstract

This device for removing deposits includes an injecting means for injecting a gas so that a gas flow having strength varying temporally and/or spatially around a discharge hole 12 so as to remove deposits. The injecting means includes a nozzle 1 for injecting the gas, and a driving means capable of controlling the position and direction of the nozzle 1. The driving means drives the nozzle 1 so that the nozzle performs a predetermined operation with respect to the position and/or direction such that the gas flow having strength varying temporally and/or spatially around a discharge hole 12, and thereby sufficiently removing deposits in a short period of time, the deposits being created around a strand 100 of a molten resin discharged from the die 10 and/or the discharge hole 12 of the die 10.

Description

Adhesion removal device and method

The present invention relates to a removing device and method for removing deposits adhering around the strands or the discharge holes of an extruder die when the resin composition is extruded into strands using an extruder.

When extruding the resin composition into a strand using an extruder, some components of the resin composition may adhere to the periphery of the discharge holes of the extruder die depending on the resin composition. Such deposits are sometimes referred to as “meyani” and have various adverse effects. For example, if the resin composition is continuously extruded in a state in which the resin is attached to the periphery of the discharge hole, the resin may grow and become entangled with the strands. If such an eyelid is left as it is, it may be mixed in the product, and there is a concern that the quality may be deteriorated due to the mixture of the eyelid in the product. Alternatively, the strands may be cut as the grown eyelids leave the extruder die. This occurs several times per hour at a high frequency, so it is necessary to constantly monitor and remove the eyebrow if necessary, but it is necessary to cut the strands of the discharge holes to be removed and carry out the operation. Will be lost.

Therefore, in order to remove the melted resin strands discharged from the extruder die or the mesiness around the discharge holes, various studies have been conventionally performed (for example, Patent Documents 1 and 2).

Patent Documents

1 and 2 disclose an extruder die having a mechanism for blowing gas near a discharge hole through which a resin is extruded to blow away the main body.

JP 2012-232432A JP, 2017-47638, A

The extruder dies disclosed in

Patent Documents

1 and 2 have a configuration in which gas is simply blown onto the eyebrows, and may not be sufficiently removed if the eyebrows are firmly attached. Then, in order to sufficiently remove such a body, it is necessary to continue jetting the gas for a long time or increase the pressure of the jetted gas. These can cause strand breaks. Further, although it is conceivable that the gas to be sprayed is heated and sprayed on the adhering material in the state of hot air, it cannot be sufficiently removed by itself.

The present invention has been made in view of the above conventional problems. And the object is to provide a deposit removing device and method capable of sufficiently removing a deposit of a molten resin discharged from an extruder die or a periphery of a resin discharge hole of a die in a short time. It is in.

In order to solve the above-mentioned problems, the deposit removing device according to the present application removes the deposit of molten resin discharged from the discharge hole formed on the discharge surface of the die and/or the deposit generated around the discharge hole. It is for removing, and includes a jetting means for jetting gas so that an air flow whose strength fluctuates temporally and/or spatially hits the periphery of the discharge hole so as to remove the deposit.

The ejection unit includes a nozzle that ejects gas, and a driving unit that can control the position and/or direction of the nozzle, and the driving unit has a temporal and/or spatially varying intensity around the ejection hole. The nozzle may be driven to perform a predetermined operation with respect to its position and/or direction so as to be hit by the air flow.

The driving means may control the position of the nozzle so that the nozzle operates with a predetermined distance from the ejection surface. The driving unit may control the position of the nozzle so that the nozzle operates while varying the distance from the ejection surface. The driving unit may control the nozzle direction so as to have a predetermined angle with respect to the ejection surface.

The predetermined operation may include a rocking operation in which the nozzle is rocked in the position and/or the direction so that the air flow whose strength fluctuates temporally and/or spatially hits the circumference of the predetermined discharge hole.

The ejection means may include two or more nozzles that can simultaneously apply airflow around one discharge hole from different directions. The driving unit may further include a support base that supports the two or more nozzles, and the driving unit may drive the two or more nozzles via the support base. The support may be capable of adjusting the distance between the two or more nozzles and the orientation of the two or more nozzles.

A plurality of discharge holes may be formed in a row in the horizontal direction on the discharge surface, and the driving means may control the position of the nozzle so as to perform a predetermined operation along the discharge holes in one row. The predetermined operation may include a translational operation of translating the nozzle from a position corresponding to the predetermined ejection hole in the ejection hole to a position corresponding to another ejection hole.

The injection means is rotatable about a predetermined axis and may include a nozzle for injecting gas. The nozzle may be rotatable about a predetermined axis over a predetermined angular range that includes the direction of adjacent ejection holes.

The nozzle is rotatable around a predetermined axis along the discharge surface, covers a rotatable range of the nozzle on the discharge surface, and rotates the nozzle at a predetermined angle including adjacent discharge holes in the circumferential direction. It may further include a hood that is opened only in the range and guides the gas injected from the nozzle to the opened range.

The ejection means may include a pipe extending along the ejection surface and having an ejection hole for ejecting gas, and the pipe may be movable along the ejection surface. The pipe may extend in one direction, and the pipe may be movable along the one direction. The pipe may be swung so that the gas jetted from the jet holes impinges on the periphery of a predetermined discharge hole an air flow whose intensity varies temporally and/or spatially.

The injecting means may inject a predetermined amount of gas. It may further include gas supply means for supplying gas to the injection means. It may further include pressure adjusting means for adjusting the pressure of the gas supplied to the injection means. It may further include gas heating means for heating the gas supplied to the injection means.

The deposit removing method according to the present application is for removing a strand of molten resin discharged from a discharge hole formed on a discharge surface of a die and/or a deposit generated around the discharge hole, An injection step of injecting a gas may be included so that an airflow having a temporally and/or spatially varying intensity hits the periphery of the discharge hole so that the deposit is removed.

The injecting step controls the position and/or direction of the nozzle that injects the gas, so that the nozzle is controlled so that an air flow having a temporally and/or spatially varying intensity hits a predetermined ejection hole around the ejection hole. It may include a driving step for driving to perform a predetermined operation with respect to position and/or direction.

In the jetting step, the nozzle may be driven so as to have a predetermined distance from the discharge surface. The driving step may drive the nozzle so that the distance to the ejection surface varies. The driving step may drive the nozzle so as to have a predetermined angle with respect to the ejection surface.

The driving step may include a rocking step of rocking the nozzle in position and/or direction so that an air flow whose strength fluctuates temporally and/or spatially hits a predetermined discharge hole.

A plurality of ejection holes may be formed in a row in the horizontal direction on the ejection surface, and the driving step may drive the nozzles along the ejection holes in one row. The driving step includes a swinging step of swinging the nozzle in a position and/or a direction so that an airflow whose intensity fluctuates temporally and/or spatially hits the predetermined discharge hole, and a predetermined discharge hole. The translation step of translating the nozzle from the corresponding position to the position corresponding to another ejection hole may be alternately repeated.

The injecting step may include a driving step for driving to rotate a nozzle that injects a gas that is rotatable around a predetermined axis over a predetermined angle range including a direction of an adjacent ejection hole.

The injection step is covered by a hood that is rotatable around a predetermined axis along the discharge surface and that is open only within a predetermined angle range that includes circumferentially adjacent discharge holes that are rotatable on the discharge surface. A driving step of driving the nozzle for injecting the gas to rotate the nozzle may be included.

The injecting step may include a driving step of driving the pipe, which extends along the ejection surface and has an ejection hole for ejecting a gas that is movable along the ejection surface, to move. The driving step may include an oscillating step of oscillating the pipe so that the gas jetted from the jet holes impinges an air flow whose intensity varies temporally and/or spatially around a predetermined discharge hole.

The injection step may inject a predetermined amount of gas. The injecting step may further include a gas supplying step of supplying a gas to be injected. The injecting step may further include a pressure adjusting step of adjusting the pressure of the gas to be injected. The injection step may further include a gas heating step of heating the gas to be injected.

According to the present invention, it is possible to sufficiently remove the strand of molten resin discharged from the extruder die or the deposits around the resin discharge hole of the die in a short time.

It is a figure which shows the deposit removal device applied to the die which has a single discharge hole. It is a figure explaining the rocking|fluctuation operation|movement of the deposit removal apparatus applied to the die which has a single discharge hole. It is a conceptual diagram explaining a series of manufacturing processes to which an adhered matter removing device is applied. It is a figure which shows the deposit removal device applied to the die which has a some discharge hole. It is a figure explaining operation|movement of the deposit removal apparatus applied to the die which has a some discharge hole. It is a figure which shows the deposit removal apparatus of the 1st modification applied to the die which has a single discharge hole. It is a perspective view which shows the support stand of the two nozzles of a 1st modification. It is a figure which shows the deposit removal apparatus of the 1st modification applied to the die which has a some discharge hole. It is a perspective view which shows the deposit removal device of the 2nd modification. It is a figure which shows the deposit removal device of the 3rd modification. It is a perspective view which shows the deposit removal apparatus of the 4th modification.

Hereinafter, embodiments of the deposit removing device and method will be described in detail with reference to the drawings. The deposit removing apparatus and method according to the present embodiment removes a strand of molten resin discharged from a discharge hole formed on a discharge surface of a die and/or a deposit generated around the discharge hole. .. There are a single die and a plurality of die that eject a molten resin strand. The deposit removing apparatus and method according to the present embodiment can be applied to a die having a single discharge hole or a plurality of discharge holes. However, in the following description, a single discharge hole will be used for convenience. Description will be given separately for a die having the same and a die having a plurality of ejection holes.

FIG. 1 is a diagram showing an adhered substance removing device of the present embodiment applied to a die having a single discharge hole. FIG. 1A is a perspective view of the deposit removing device, FIG. 1B is a front view of the deposit removing device, and FIG. 1C is a left side view of the deposit removing device. In the die 10, a single discharge hole 12 having a predetermined diameter is formed at a substantially center of a discharge surface 11 extending in a substantially vertical direction. The molten resin strands 100 are discharged from the discharge holes 12 at a predetermined linear velocity.

The deposit removing device according to the present embodiment has one nozzle 1 for injecting gas at a predetermined flow rate. The nozzle 1 is driven by a driving unit (not shown), has a predetermined space from the ejection surface 11 of the die 10, and has a predetermined position and/or direction with respect to the ejection hole 12 formed in the ejection surface 11. By performing the operation, the air flow whose strength fluctuates temporally and/or spatially is controlled around the ejection hole 12. In the present specification, regarding the operation of the nozzle 1 in space and/or direction so that an air flow whose strength fluctuates temporally and/or spatially hits the ejection hole 12 of the ejection surface 11, I will rock it. The driving means of the nozzle 1 may be constituted by a suitable actuator or a robot arm.

In the present embodiment, the nozzle 1 is located on the upper left side of the ejection surface 11 of the die 10 toward the ejection hole 12, faces the ejection surface 11 at a predetermined interval, and forms a predetermined angle with the ejection surface 11. The first position P1 for injecting the gas downward and the first position P1 are at substantially the same height as the first position P1 and are located on the upper right side toward the ejection holes 12 of the ejection surface 11 at a predetermined interval. It has and opposes and oscillates between the discharge surface 11 and the second position P2 that makes a predetermined angle and injects gas downward. By such an oscillating operation, it is possible to make the air flow whose strength fluctuates temporally and/or spatially around the ejection holes 12 of the ejection surface 11.

In the deposit removing device of the present embodiment, the nozzle 1 that injects gas at a predetermined flow rate oscillates between the first position P1 and the second position P2, so that the discharge hole 12 of the discharge surface 11 The surroundings may be exposed to an air flow whose intensity varies temporally and/or spatially. Therefore, the strands 100 ejected from the ejection holes 12 of the ejection surface 11 or the deposits generated around the ejection holes 12 of the ejection face 11 are blown off by an air flow whose strength varies, and these deposits are sufficiently removed in a short time. can do.

In the deposit removing device of the present embodiment, the distance between the ejection surface 11 and the nozzle 1 may be 2 to 30 mm. In the present specification, the distance between the ejection surface 11 and the nozzle 1 is the distance a between the tip of the nozzle 1 shown in FIG. Of the distance b between the tip of the nozzle 1 and the ejection surface 11 when viewed from above, the distance a between the tip of the nozzle 1 and the position where the gas actually hits the ejection surface 11 is referred to.

The deposit removing device of the present embodiment may have a gas supply means for supplying a predetermined type of gas to the nozzle 1. The gas supply means may be a compressor that supplies compressed gas. The gas may be air or a non-oxidizing gas. Further, the deposit removing device of the present embodiment may have a pressure adjusting means for adjusting the pressure so as to inject a gas having a predetermined pressure from the nozzle 1. The pressure adjusting means may be a pressure reducing valve provided in an air supply pipe for supplying gas from the gas supply means to the nozzle 1.

Further, the deposit removing device of the present embodiment may have a gas heating means for heating the gas injected from the nozzle 1 to a predetermined temperature. The gas heating means may be a heater provided in the air supply pipe or the nozzle 1. The temperature of the heated gas supplied to the nozzle 1 may be in the range of 20 to 800°C, preferably 20 to 600°C. The temperature of the air flow ejected from the nozzle 1 and hitting the periphery of the discharge hole 12 is lower than the temperature of the heated gas supplied to the nozzle 1. The temperature of the air flow that hits the periphery of the discharge hole 12 has influential factors such as the heater set temperature, the gas flow rate, the inner diameter/length of the nozzle 1, the distance between the tip of the nozzle 1 and the discharge surface 11, etc. It suffices to select the conditions suitable for the product.

FIG. 2 is a diagram explaining the swinging operation of the adhered substance removing device applied to a die having a single discharge hole. In the swinging operation of the first mode shown in FIG. 2A, the nozzle 1 moves from the first position P1 at the upper left toward the ejection hole 12 of the ejection surface 11 toward the ejection hole 12 of the ejection surface 11 of the die 10. One cycle is to move forward in the substantially horizontal direction to the second position P2 located on the upper right side and move forward in the substantially horizontal direction, and then move in the reverse direction from the second position P2 to the first position P1 in the substantially horizontal direction and return. Then, this cycle is repeated a predetermined number of times. By such a swinging operation, it is possible to make the air flow whose strength fluctuates temporally and/or spatially hit the periphery of the ejection hole 12 of the ejection surface 11.

In the swing operation of the first aspect, the nozzle 1 that injects gas at a predetermined flow rate swings between the first position P1 and the second position P2, so that the discharge surface 11 is surrounded by the discharge holes 12. The air flow whose intensity fluctuates temporally and/or spatially can be applied. Therefore, the strands 100 ejected from the ejection holes 12 of the ejection surface 11 or the deposits generated around the ejection holes 12 of the ejection face 11 are blown off by an air flow whose strength varies, and these deposits are sufficiently removed in a short time. can do.

In this specification, the predetermined operation along the ejection surface 11 of the nozzle 1 is illustrated, but the nozzle 1 is not limited to the order of the illustrated operation, and may be operated in the reverse order. For example, in the swing motion of the first mode shown in FIG. 2A, the operation of advancing from the second position P2 to the first position P1 and returning from the first position P1 to the second position P2 may be one cycle. .. The same applies below.

In the swinging operation of the second mode shown in FIG. 2B, the nozzle 1 is directly above the ejection hole 12 of the ejection surface 11 and faces the ejection surface 11 at a predetermined interval. The 0th position P0 which makes a predetermined angle with 11 and injects gas downward is made into the starting point. Then, the nozzle 1 moves in the forward direction in a substantially horizontal direction from the 0th position P0 at the starting point to the second position P2 in the upper right direction toward the discharge hole 12 of the discharge surface 11, and then proceeds from the second position P2 to the second position P2. The operation of moving to the 0 position P0 in a substantially horizontal direction in the opposite direction and returning is referred to as a first cycle. Further, the nozzle 1 moves in a reverse direction in a substantially horizontal direction from the 0th position P0 at the starting point to the first position P1 at the upper left toward the discharge hole 12 of the discharge surface 11, and then proceeds from the first position P1 to the first position P1. The operation of moving to the 0 position P0 in the substantially horizontal direction in the forward direction and returning to the 0 position P0 is referred to as a second cycle. Then, the operation in which the first cycle and the second cycle are combined is defined as one cycle, and this cycle is repeated a predetermined number of times. By such a swinging operation, it is possible to make the air flow whose strength fluctuates temporally and/or spatially hit the periphery of the ejection hole 12 of the ejection surface 11.

Comparing the first cycle and the second cycle of the rocking motion of the second mode with one cycle of the rocking motion of the first mode, the combined amplitude of the first cycle and the second cycle of the motion of the second mode is first. This corresponds to the amplitude of one cycle of the swinging motion of the embodiment. Further, the sum of the periods of the first cycle and the second cycle of the rocking motion of the second mode corresponds to the period of one cycle of the rocking motion of the first mode. Furthermore, the sum of the number of times of the first cycle and the second cycle of the swing motion of the second mode corresponds to twice the number of times of one cycle of the corresponding motion of the first mode.

Also in the swinging operation of the second aspect, the nozzle 1 that injects gas at a predetermined flow rate swings between the first position P1 and the second position P2 starting from the 0th position P0, so that the discharge surface 11 It is possible to make the air flow whose strength fluctuates temporally and/or spatially hit the periphery of the discharge hole 12. Therefore, the strands 100 ejected from the ejection holes 12 of the ejection surface 11 or the deposits generated around the ejection holes 12 of the ejection face 11 are blown off by an air flow whose strength varies, and these deposits are sufficiently removed in a short time. can do.

In the swing motion of the second aspect, the nozzle 1 is driven between the 0th position P0 and the first position P1 in the first cycle in which the nozzle 1 is driven between the 0th position P0 and the second position P2. The second cycle to be driven can be individually controlled. Therefore, it is possible to individually control the strength of the airflow that strikes the ejection holes 12 from the right side and the left side toward the ejection surface 11. Therefore, even when the amounts of the adhered substances generated on the left and right sides of the discharge hole 12 are different, it is possible to deal with the situation by individually adjusting the intensities of the air currents that hit the discharge hole 12 from the right side and the left side.

In the deposit removing device according to the present embodiment, the swinging operation corresponding to the discharge hole 12 may be performed with an amplitude of 0.5 to 3 times the diameter of the discharge hole 12. Further, the cycle of the rocking operation corresponding to the single ejection hole 12 may be 0.5 to 3 seconds. The number of times of rocking with respect to the ejection hole 12 may be 2 to 4 times.

In addition, in the deposit removing device of the present embodiment, the distance between the ejection surface 11 of the die 10 and the nozzle 1 may not be a constant distance. The distance between the ejection surface 11 and the nozzle 1 may be controlled so as to change in a predetermined operation of the nozzle 1 by the driving unit.

FIG. 3 is a conceptual diagram illustrating a series of manufacturing processes to which an adhered matter removing device is applied. The deposit removing device according to the present embodiment is applied to the die 10 attached to the extruder 40, and is formed around the molten resin strand 100 discharged from the discharge hole 12 of the die 10 and/or around the discharge hole 12. Removed deposits. The strand 100 from which the deposits have been removed is put into the water bath 50 and cooled by the cooling water 51. After that, the pellets 110 are conveyed to the cutter 60 and cut into a predetermined length to form pellets 110.

In the extruder 40, a deposit removing device is installed above the discharge surface 11 of the die 10. The extruder 40 is not particularly limited as long as it has an extrusion screw, and examples thereof include a single-screw extruder, different-direction twin-screw extruder, and same-direction twin-screw extruder. Then, in the extruder 40, since the removal operation is performed by the deposit removing device, it is possible to suppress the growth of deposits around the discharge holes 12 of the die 10. Therefore, the deposits generated around the discharge holes 12 at the time of extrusion are removed, and the deposits are mixed in the final product, and the maintenance work frequency for cutting the strands 100 and removing the deposits due to the deposits is reduced. It can be reduced.

In the present embodiment, the resin composition forming the strand 100 is manufactured by charging at least the resin and the additive into the extruder 40 and discharging the resin from the die 10. The resin used in this embodiment is not particularly limited, and may be a general-purpose resin or an engineering resin. A plurality of these resins may be mixed. Further, the additive used is not limited, and various stabilizers, various function-imparting agents, various physical property enhancers and the like can be used. The deposit removing device according to the present embodiment is particularly effective for producing a resin composition that is likely to generate deposits.

As the resin composition, for example, at least a polyacetal resin and a graft copolymer having a main chain of polyethylene and a side chain of an acrylonitrile-styrene copolymer are charged into an extruder 40, and then a die 10 is used. A polyacetal resin composition can be obtained by discharging. When extruding with the extruder 40 when obtaining such a resin composition, an adhered matter derived from the graft copolymer tends to be generated around the discharge hole 12 of the die 10. By using the deposit removing device of the present embodiment, deposits are reduced, and it is possible to suppress inclusion of deposits in the final product and cutting of the strand 100.

As described above, in the present embodiment, the adhering substance removing apparatus can sufficiently adhere the adhering substances generated around the resin strands 100 and/or the ejection holes 12 ejected from the ejection holes 12 of the die 10 in a short time. It has been removed. Therefore, the strand 100 will not be cut due to the generation of deposits, and the manufacturing efficiency can be improved. Further, since the deposits are sufficiently removed from the strand 100, the quality of the pellet 110 produced by cutting the strand 100 can be improved.

FIG. 4 is a diagram showing an adhered substance removing device of the present embodiment applied to a die having a plurality of discharge holes. FIG. 4A is a perspective view of the deposit removing device, FIG. 4B is a front view of the deposit removing device, and FIG. 4C is a left side view of the deposit removing device. In the die 10, the four first discharge holes 13, the second discharge holes 14, the third discharge holes 15, and the fourth discharge holes 16 each having a predetermined diameter are provided at the substantially vertical center of the discharge surface 11 extending in the substantially vertical direction. Of the discharge holes are formed side by side in a row at a predetermined interval in a substantially horizontal direction. From the first discharge hole 13, the second discharge hole 14, the third discharge hole 15, and the fourth discharge hole 16, the first strand 101, the second strand 102, the third strand 103, and the fourth strand 104 have predetermined lines. Discharged at a speed.

The deposit removing device of the present embodiment has a nozzle 1 for injecting gas at a predetermined flow rate. The nozzle 1 is driven by a driving unit (not shown) and has a predetermined interval with respect to the ejection surface 11 of the die 10, and has a first ejection hole 13, a second ejection hole 14, and a third ejection hole formed in the ejection surface 11. By performing a predetermined operation with respect to the position and direction of the hole 15 and the fourth discharge hole 16, the first discharge hole 13, the second discharge hole 14, the third discharge hole 15 and the fourth discharge hole 16 are surrounded. It is driven so that it is hit by an air flow whose intensity varies temporally and/or spatially.

In the present embodiment, the nozzle 1 is located on the upper left side of the ejection surface 11 of the die 10 toward the first ejection hole 13, faces the ejection surface 11 at a predetermined interval, and forms a predetermined angle with the ejection surface 11. The first position P1 for injecting the gas downward and at substantially the same height as the first position P1 is located on the upper right side of the first discharge hole 13 of the discharge surface 11 and on the second discharge hole 14. On the other hand, a second position P2, which is on the upper left side and faces the ejection surface 11 with a predetermined interval, injects gas downward at a predetermined angle with the ejection surface 11, and a first position. It is located at substantially the same height as P1 and the second position P2, and is located on the upper right side of the second ejection hole 14 of the ejection surface 11 and on the upper left side of the third ejection hole 15 at a predetermined interval on the ejection surface 11. The third position P3, which has and faces the ejection surface 11 at a predetermined angle with respect to the ejection surface 11 and has the same height as the first position P1, the second position P2, and the third position P3. The upper surface of the discharge surface 11 faces the third discharge hole 15 and the upper surface of the discharge surface 11 faces the fourth discharge hole 16, and faces the discharge surface 11 with a predetermined space. At the same height as the fourth position P4 for injecting gas downward and at the first position P1, the second position P2, the third position P3, and the fourth position P4. The fifth position P5, which is on the upper right side of the fourth discharge hole 16 and faces the discharge surface 11 at a predetermined interval and injects gas downward at a predetermined angle with the discharge surface 11. A predetermined operation is performed along a line of the first ejection hole 13, the second ejection hole 14, the third ejection hole 15, and the fourth ejection hole 16. This operation is performed so that the airflow whose strength fluctuates temporally and/or spatially is applied to the periphery of the first ejection hole 13, the second ejection hole 14, the third ejection hole 15, and the fourth ejection hole 16 of the ejection surface 11. It includes a swinging motion.

In the deposit removing device of the present embodiment, the nozzles 1 for injecting gas at a predetermined flow rate are arranged along a row of the first discharge hole 13, the second discharge hole 14, the third discharge hole 15, and the fourth discharge hole 16. And swings between the first position P1, the second position P2, the third position P3, the fourth position P4, and the fifth position P5. For example, you may swing about the suitable folding|turning endpoint selected from the 1st position P1, the 2nd position P2, the 3rd position P3, the 4th position P4, and the 5th position P5. As a result, an air flow whose intensity fluctuates temporally and/or spatially is applied to the periphery of the first ejection hole 13, the second ejection hole 14, the third ejection hole 15, and the fourth ejection hole 16 of the ejection surface 11. can do. Therefore, the first strand 101, the second strand 102, the third strand 103, and the third strand 103 discharged from the first discharge hole 13, the second discharge hole 14, the third discharge hole 15, and the fourth discharge hole 16 of the discharge surface 11, respectively. It is possible to blow away the adhered matter generated around the four strands 104 or the first discharge hole 13, the second discharge hole 14, the third discharge hole 15, and the fourth discharge hole 16 of the discharge surface 11 with an air current whose strength varies. Therefore, these deposits can be sufficiently removed in a short time.

An example in which four ejection holes of a first ejection hole 13, a second ejection hole 14, a third ejection hole 15 and a fourth ejection hole 16 are formed on the ejection surface 11 as a die 10 having a plurality of ejection holes. Although shown, the die 10 to which the deposit removing device of the present embodiment is applied is not limited to the one having four ejection holes. The deposit removing device according to the present embodiment can be applied to the die 10 having two or more ejection holes on the ejection surface 11 as the die 10 having a plurality of ejection holes.

FIG. 5 is a diagram for explaining the operation of the deposit removing device applied to a die having a plurality of discharge holes. In FIG. 5, the starting point of the swinging motion corresponding to a predetermined discharge hole is shown as the upper left of the corresponding discharge hole toward the discharge surface 11 as shown as the swinging motion of the first mode in FIG. However, as shown in FIG. 2B as the swing motion of the second mode, the starting point of the swing motion corresponding to a predetermined discharge hole is set directly above the corresponding discharge hole toward the discharge surface 11. Good.

In the operation of the first mode shown in FIG. 5A, the swing operation is performed for each of the first discharge hole 13, the second discharge hole 14, the third discharge hole 15, and the fourth discharge hole 16. As the swing motion corresponding to the first discharge hole 13, the first discharge is performed toward the discharge surface 11 from the first position P1 which is the starting point of the swing motion corresponding to the first discharge hole 13 toward the second position P2. With a predetermined amplitude, the nozzle 1 moves forward in a substantially horizontal direction beyond just above the hole 13 to a predetermined turnaround end point and moves in a reverse direction in a substantially horizontal direction from the turnaround end point to the first position P1. The operation is the first cycle, and the first cycle is repeated a predetermined number of times. By such a swinging operation, it is possible to make the air flow whose strength fluctuates temporally and/or spatially hit the periphery of the first ejection hole 13 of the ejection surface 11.

In order to enable the swinging motion corresponding to the second discharge hole 14 subsequent to the swinging motion corresponding to the first discharge hole 13, it is the starting point of the swinging motion corresponding to the first discharge hole 13. The nozzle 1 is advanced from the first position P1 to the second position P2 which is the starting point of the swinging motion corresponding to the second ejection hole 14. In the following specification, the nozzle is translated in terms of moving the nozzle from a position corresponding to a predetermined discharge hole to a position corresponding to another discharge hole. Subsequent to such a translational motion, as a swinging motion corresponding to the second discharge hole 14, the nozzle 1 moves the second discharge hole 14 from the second position P2 toward the third position P3 toward the discharge surface 11. The second cycle is an operation of a predetermined amplitude that moves forward in a substantially horizontal direction to a predetermined turnaround end point over just above and then moves in a reverse direction in a substantially horizontal direction from the turnaround end point to a second position P2. , The second cycle is repeated a predetermined number of times. By such a swinging operation, it is possible to make the airflow whose strength fluctuates temporally and/or spatially hit the periphery of the second ejection hole 14 of the ejection surface 11.

In order to enable the swinging motion corresponding to the third discharge hole 15 subsequent to the swinging motion corresponding to the second discharge hole 14, it is the starting point of the swinging motion corresponding to the second discharge hole 14. The nozzle 1 is translated from the second position P2 to the third position P3, which is the starting point of the swing motion corresponding to the third ejection hole 15. Subsequent to such a translational motion, as a swinging motion corresponding to the third discharge hole 15, the nozzle 1 moves from the third position P3 to the fourth position P4 toward the discharge surface 11 toward the discharge surface 11 so that the third discharge hole 15 moves. An operation of a predetermined amplitude is defined as a third cycle, in which the operation proceeds in a forward direction in a substantially horizontal direction beyond just above to a predetermined turnaround end point and proceeds, and moves in a reverse direction in a substantially horizontal direction from the turnaround end point to a third position P3. , The third cycle is repeated a predetermined number of times. By such a swinging operation, it is possible to make the air flow whose strength fluctuates temporally and/or spatially around the third ejection hole 15 of the ejection surface 11.

In order to enable the swing operation corresponding to the fourth discharge hole 16 subsequent to the swing operation corresponding to the third discharge hole 15, the swing operation corresponding to the third discharge hole 15 is the starting point. The nozzle 1 is translated from the third position P3 to the fourth position P4 which is the starting point of the swinging motion corresponding to the fourth ejection hole 16. Subsequent to such a translational movement, as a swinging operation corresponding to the fourth ejection hole 16, the nozzle 1 moves toward the ejection surface 11 from the fourth position P4 to the fifth position P5 toward the ejection surface 11 so that the fourth ejection hole 16 moves. The fourth cycle is an operation with a predetermined amplitude, which goes forward and moves in a substantially horizontal direction forward to a predetermined turnaround end point, and moves in a reverse direction in a substantially horizontal direction from the turnaround end point to the fourth position P4. , The fourth cycle is repeated a predetermined number of times. By such a swinging operation, it is possible to make the air flow whose strength fluctuates temporally and/or spatially hit the periphery of the fourth ejection hole 16 of the ejection surface 11.

After completing such a series of operations, the nozzle 1 may be returned to the first position P1 which is the starting point of the swinging operation corresponding to the first discharge hole 13. The first cycle, the second cycle, the third cycle, and the fourth cycle of a predetermined number of times may be combined into one cycle, and this cycle may be repeated a predetermined number of times.

In the operation of the first aspect, the nozzle 1 that injects the gas at a predetermined flow rate has the first cycle starting from the first position P1 corresponding to the first discharge hole 13, and the second position corresponding to the second discharge hole 14. A second cycle starting from P2, a third cycle starting from a third position P3 corresponding to the third discharge hole 15, and a fourth cycle starting from a fourth position P4 corresponding to the fourth discharge hole 16 By performing the swinging motion of the, the strength around the first discharge hole 13, the second discharge hole 14, the third discharge hole 15, and the fourth discharge hole 16 of the discharge surface 11 is temporally and/or spatially. A fluctuating air flow can be applied. Therefore, the first strand 101, the second strand 102, the third strand 103, and the third strand 103 discharged from the first discharge hole 13, the second discharge hole 14, the third discharge hole 15, and the fourth discharge hole 16 of the discharge surface 11, respectively. The four strands 104 or the first discharge hole 13, the second discharge hole 14, the third discharge hole 15, and the fourth discharge hole 16 on the discharge surface 11 are blown off by an air flow whose strength fluctuates, and these deposits are attached. The kimono can be sufficiently removed in a short time.

In the operation of the first aspect, the nozzle 1 starts the first cycle starting from the first position P1 corresponding to the first discharge hole 13 and the second cycle starting from the second position P2 corresponding to the second discharge hole 14. Two cycles, the third cycle starting from the third position P3 corresponding to the third discharge hole 15 and the fourth cycle starting from the fourth position P4 corresponding to the fourth discharge hole 16 are individually controlled. can do. Therefore, it is possible to individually control the strength of the airflow impinging around the first ejection hole 13, the second ejection hole 14, the third ejection hole 15, and the fourth ejection hole 16 of the ejection surface 11. Therefore, even when the amounts of deposits generated in the first ejection hole 13, the second ejection hole 14, the third ejection hole 15, and the fourth ejection hole 16 are different, the first ejection hole 13 and the second ejection hole 14 are different. This can be dealt with by individually adjusting the strength of the airflow impinging on the periphery of the third discharge hole 15 and the fourth discharge hole 16.

In the operation of the second mode shown in FIG. 5B, two ejection holes, such as the first ejection hole 13 and the second ejection hole 14, and the third ejection hole 15 and the fourth ejection hole 16, are formed. The rocking motion is performed for each as a set. As the rocking motion corresponding to the first ejection hole 13 and the second ejection hole 14, from the first position P1 which is the starting point of the rocking motion corresponding to the first ejection hole 13 and the second ejection hole 14 to the third position P3. Toward the discharge surface 11, the nozzle 1 moves forward in a substantially horizontal direction beyond the first discharge hole 13 and the second discharge hole 14 to a predetermined turnaround end point, and advances from the turnaround end point to the predetermined turnaround end point. The operation of a predetermined amplitude that moves to the first position P1 in a substantially horizontal direction in the reverse direction and returns is defined as a first cycle, and the first cycle is repeated a predetermined number of times. By such a swinging operation, it is possible to make the air flow whose strength fluctuates temporally and/or spatially hit the periphery of the first ejection hole 13 and the second ejection hole 14 of the ejection surface 11.

In order to enable the swing operation corresponding to the third discharge hole 15 and the fourth discharge hole 16 subsequent to the swing operation corresponding to the first discharge hole 13 and the second discharge hole 14, the first discharge hole 13 is provided. And a nozzle from the first position P1 which is the starting point of the swinging motion corresponding to the second discharge hole 14 to the third position P3 which is the starting point of the swinging motion corresponding to the third discharge hole 15 and the fourth discharge hole 16. Translate 1 Subsequent to such a translational movement, the nozzle 1 moves toward the ejection surface 11 from the third position P3 to the fifth position P5 as a swinging operation corresponding to the third ejection hole 15 and the fourth ejection hole 16. The nozzle 1 moves forward in the substantially horizontal direction beyond just above the third discharge hole 15 and the fourth discharge hole 16 to a predetermined folding end point, and moves in the reverse direction from the folding end point to the third position P3 in the substantially horizontal direction. The operation of a predetermined amplitude that moves in the direction and returns is defined as a second cycle, and the second cycle is repeated a predetermined number of times. By such a swinging operation, it is possible to make the air flow whose strength fluctuates temporally and/or spatially around the third ejection hole 15 and the fourth ejection hole 16 of the ejection surface 11. After completing such a series of operations, the nozzles may be returned to the first position P1 which is the starting point of the swinging operation corresponding to the first ejection hole 13 and the second ejection hole 14. The predetermined number of times of the first cycle and the second cycle may be combined into one cycle, and this cycle may be repeated a predetermined number of times.

Also in the operation of the second aspect, the first cycle in which the nozzle 1 that injects the gas at a predetermined flow rate starts from the first position P1 corresponding to the first discharge hole 13 and the second discharge hole 14, and the third discharge hole 15 By the swinging operation of the second cycle starting from the third position P3 corresponding to the fourth discharge hole 16, the first discharge hole 13, the second discharge hole 14, the third discharge hole 15 of the discharge surface 11, and An air flow whose intensity fluctuates temporally and/or spatially can be applied to the periphery of the fourth discharge hole 16. Therefore, the first strand 101, the second strand 102, the third strand 103, and the third strand 103 discharged from the first discharge hole 13, the second discharge hole 14, the third discharge hole 15, and the fourth discharge hole 16 of the discharge surface 11, respectively. The four strands 104 or the first discharge hole 13, the second discharge hole 14, the third discharge hole 15, and the fourth discharge hole 16 on the discharge surface 11 are blown off by an air flow whose strength fluctuates, and these deposits are attached. The kimono can be sufficiently removed in a short time.

Further, in the operation of the second aspect, the first cycle in which the nozzle 1 starts from the first position P1 corresponding to the first ejection hole 13 and the second ejection hole 14, the third ejection hole 15, and the fourth ejection hole 16 It is possible to individually control the swinging operation of the second cycle starting from the third position P3 corresponding to. Therefore, it is possible to individually control the intensities of the airflows that impinge around the first ejection holes 13 and the second ejection holes 14 of the ejection surface 11, and the third ejection holes 15 and the fourth ejection holes 16. Therefore, even when the amounts of the deposits generated in the first ejection hole 13 and the second ejection hole 14 and the third ejection hole 15 and the fourth ejection hole 16 are different, the first ejection hole 13 and the second ejection hole This can be dealt with by individually adjusting the intensities of the air currents that hit the peripheries of the holes 14 and the third and fourth ejection holes 15 and 16.

Further, comparing the operation of the second aspect with the operation of the first aspect, in the operation of the first aspect, one cycle is the first position where the nozzle 1 is the starting point of the swinging operation corresponding to the first ejection hole 13. From P1, it corresponds to the second position P2, which is the starting point of the rocking operation corresponding to the second ejection hole 14, the third position P3, which is the starting point of the rocking operation corresponding to the third ejection hole 15, and the fourth ejection hole 16. While the translation operation of 5 steps such as translation to the fourth position P4, which is the starting point of the swing operation, and then translation to the first position P1, was included, in the second swing operation, one cycle However, from the first position P1 at which the nozzle 1 is the starting point of the swing operation corresponding to the first discharge hole 13 and the second discharge hole 14, the swing operation corresponding to the third discharge hole 15 and the fourth discharge hole 16 is performed. The difference is that it includes a three-step translation operation of translating to a third position P3 that is a starting point and then translating to a first position P1. Therefore, in the operation of the second aspect, since the steps of the translational movement are reduced as compared with the operation of the first aspect, the predetermined operation of the nozzle 1 including the swinging operation and the translational operation becomes simpler, and the operation of the predetermined operation is reduced. The cycle of one cycle is also shortened.

As the swinging motion of the second aspect, two ejection holes, such as the first ejection hole 13 and the second ejection hole 14, and the third ejection hole 15 and the fourth ejection hole 16, are respectively set as a set. Although the example in which the swinging operation is performed is described above, the swinging operation may be performed for each set of two or more discharge holes. The same applies below.

In the operation of the third mode shown in FIG. 5C, the four ejection holes of the first ejection hole 13, the second ejection hole 14, the third ejection hole 15, and the fourth ejection hole 16 are collectively swung. I do. As the swing motion corresponding to the first ejection hole 13, the second ejection hole 14, the third ejection hole 15, and the fourth ejection hole 16, the first ejection hole 13, the second ejection hole 14, the third ejection hole 15, and the third ejection hole 15 The first ejection hole 13, the second ejection hole 14, the third ejection hole 15, and the third ejection hole 15 from the first position P1 which is the starting point of the swinging operation corresponding to the fourth ejection hole 16 toward the fifth position P5 toward the ejection surface 11. The nozzle 1 moves forward in the substantially horizontal direction beyond just above the fourth discharge hole 16 to a predetermined folding end point, and moves in the reverse direction in the substantially horizontal direction from the folding end point to the first position P1 and returns. The operation with a predetermined amplitude is defined as one cycle, and this cycle is repeated a predetermined number of times. Due to such swinging operation, the airflow whose strength fluctuates temporally and/or spatially around the first ejection hole 13, the second ejection hole 14, the third ejection hole 15, and the fourth ejection hole 16 of the ejection surface 11. Can be hit.

Also in the operation of the third aspect, the nozzle 1 for injecting gas at a predetermined flow rate has the first position P1 corresponding to the first ejection hole 13, the second ejection hole 14, the third ejection hole 15, and the fourth ejection hole 16. By swinging between the folding end points, the strength is temporal and/or temporal around the first ejection hole 13, the second ejection hole 14, the third ejection hole 15, and the fourth ejection hole 16 of the ejection surface 11. It is possible to impinge a spatially varying air flow. Therefore, the first strand 101, the second strand 102, the third strand 103, and the third strand 103 discharged from the first discharge hole 13, the second discharge hole 14, the third discharge hole 15, and the fourth discharge hole 16 of the discharge surface 11, respectively. The four strands 104 or the first discharge hole 13, the second discharge hole 14, the third discharge hole 15, and the fourth discharge hole 16 on the discharge surface 11 are blown off by an air flow whose strength fluctuates, and these deposits are attached. The kimono can be sufficiently removed in a short time.

Further, when the operation of the third aspect is compared with the operations of the first aspect and the second aspect, in the operation of the first aspect, one cycle is the starting point of the swinging operation in which the nozzle 1 corresponds to the first ejection hole 13. From the first position P1 to the second position P2, which is the starting point of the rocking motion corresponding to the second ejection hole 14, the third position P3, which is the starting point of the rocking motion corresponding to the third ejection hole 15, and the fourth ejection hole. 16 translational motions such as translating to the fourth position P4 which is the starting point of the swing motion corresponding to 16 and then translating to the first position P1. In the motion of the second aspect, one cycle is From the first position P1 at which the nozzle 1 is the starting point of the rocking operation corresponding to the first ejection hole 13 and the second ejection hole 14, to the starting point of the rocking operation corresponding to the third ejection hole 15 and the fourth ejection hole 16. In contrast to the three-step translational motion of translating to the third position P3 and then to the first position P1, the operation of the third aspect is different in that the translational motion is not included. doing. Therefore, in the operation of the third aspect, as compared with the operations of the first aspect and the second aspect, the step of the translation operation does not exist, so that the predetermined operation of the nozzle 1 including the swinging operation becomes easier and the predetermined operation is performed. The cycle of 1 cycle is also shortened.

FIG. 6 is a view showing an adhered substance removing device of a first modified example applied to a die having a single discharge hole. 6A is a perspective view of the first modification, FIG. 6B is a front view of the first modification, and FIG. 1C is a left side view of the first modification. In the die 10, a single discharge hole 12 having a predetermined diameter is formed at a substantially center of a discharge surface 11 extending in a substantially vertical direction. The molten resin strands 100 are discharged from the discharge holes 12 at a predetermined linear velocity.

The adhered matter removing device of the first modification has two nozzles, a first nozzle 2 and a second nozzle 3 which inject gas at a predetermined flow rate. The first nozzle 2 and the second nozzle 3 are driven by a driving unit (not shown) via a support base 8 that supports the first nozzle 2 and the second nozzle 3, and a predetermined amount with respect to the ejection surface 11 of the die 10. By performing a predetermined operation with respect to the position and/or the direction of the discharge holes 12 formed on the discharge surface 11 having a space, the strength varies temporally and/or spatially around the discharge holes 12. It is swung so as to hit the air flow.

In the first modified example, the two nozzles of the first nozzle 2 and the second nozzle 3 allow the airflow whose strength fluctuates temporally and/or spatially to hit the ejection hole 12 of the ejection surface 11. can do. Therefore, the strands 100 ejected from the ejection holes 12 of the ejection surface 11 or the deposits generated around the ejection holes 12 of the ejection face 11 are blown off by an air flow whose strength varies, and these deposits are sufficiently removed in a short time. can do. Further, in the first modified example, the two nozzles of the first nozzle 2 and the second nozzle 3 simultaneously apply the airflow from the different directions to the periphery of the ejection hole 12 of the ejection surface 11 to reliably remove the adhering matter. can do.

It should be noted that, although the example of having the two nozzles of the first nozzle 2 and the second nozzle 3 has been shown as the attached matter removing device of the first modified example, the present embodiment is not limited to the two nozzles. The present embodiment can be similarly applied to three or more nozzles as a plurality of nozzles.

FIG. 7 is a perspective view showing a support base for two nozzles of a first modified example. The support base 8 supports the first nozzle 2 and the second nozzle 3 so that the angles and heights of the first nozzle 2 and the distance between the second nozzle 3 can be adjusted. The first nozzle 2 and the second nozzle 3 may be set by the support base 8 so that the air streams of the gas jetted from the respective nozzles merge at one point, for example. In addition, it may be set so that the air streams of the gas jetted from each do not join. The angles and heights of the first nozzle 2 and the second nozzle 3, the mutual distances, and the like can be appropriately adjusted based on the position of the support base 8 with respect to the ejection holes of the ejection surface 11 of the die 10.

In the first modified example, the first nozzle 2 and the second nozzle 3 are located on the upper left side of the ejection surface 11 of the die 10 toward the ejection hole 12 and face the ejection surface 11 with a predetermined interval. 11, a first position P1 for injecting gas downward at a predetermined angle with the first position P1, which is substantially at the same height as the first position P1, and is located on the upper right side toward the discharge hole 12 of the discharge surface 11, The discharge surface 11 is opposed to the discharge surface 11 at a predetermined interval, and swings between the discharge surface 11 and a second position P2 that makes a predetermined angle and injects gas downward. By such a swinging operation, it is possible to make the air flow whose strength fluctuates temporally and/or spatially hit the periphery of the ejection hole 12 of the ejection surface 11.

The swinging motion of the first nozzle 2 and the second nozzle 3 in the first modification is as shown in FIG. 2A for one nozzle 1 as the swinging motion of the first mode. The second nozzle 3 is forward in a substantially horizontal direction from a first position P1 located on the upper left side of the ejection surface 11 of the ejection surface 11 to a second position P2 located on the upper right side of the ejection hole 12 of the ejection surface 11 of the die 10. The cycle may be repeated a predetermined number of times, with one cycle being an operation of moving to and moving from the second position P2 to the first position P1 in the reverse direction in the substantially horizontal direction.

The swinging motion of the first nozzle 2 and the second nozzle 3 in the first modified example is the same as the one nozzle 1 shown in FIG. 2B as the swinging motion of the second mode. The second nozzle 2 and the second nozzle 3 are directly above the ejection hole 12 of the ejection surface 11 and face the ejection surface 11 with a predetermined interval, and face the ejection surface 11 downward at a predetermined angle. From the position P0 for injecting the gas toward the discharge hole 12 of the discharge surface 11 to the second position P2 at the upper right in a substantially horizontal forward direction, and then proceed, and then from the second position to the position P0 in a substantially horizontal direction. The operation of moving in the opposite direction and returning is defined as the first cycle, and moves in the substantially horizontal direction in the opposite direction from the position P0 to the first position P1 located on the upper left side toward the ejection hole 12 of the ejection surface 11 and then proceeds. The operation of moving from the first position P1 to the position P0 in the substantially horizontal direction in the forward direction and returning is referred to as the second cycle, and the operation in which the first cycle and the second cycle are combined is defined as one cycle, and this cycle is repeated a predetermined number of times. It may be one.

FIG. 8 is a view showing an adhered matter removing device of a first modified example applied to a die having a plurality of discharge holes. 8A is a perspective view of the first modification, FIG. 8B is a front view of the first modification, and FIG. 8C is a left side view of the first modification. In the die 10, the four first discharge holes 13, the second discharge holes 14, the third discharge holes 15, and the fourth discharge holes 16 each having a predetermined diameter are provided at the substantially vertical center of the discharge surface 11 extending in the substantially vertical direction. Of the discharge holes are formed side by side in a row at a predetermined interval in a substantially horizontal direction. From the first discharge hole 13, the second discharge hole 14, the third discharge hole 15, and the fourth discharge hole 16, the first strand 101, the second strand 102, the third strand 103, and the fourth strand 104 have predetermined lines. Discharged at a speed.

The adhered matter removing device of the first modification has two nozzles, a first nozzle 2 and a second nozzle 3 which inject gas at a predetermined flow rate. The first nozzle 2 and the second nozzle 3 are driven by a driving unit (not shown) via a support base 8 that supports the first nozzle 2 and the second nozzle 3, and have a predetermined distance from the ejection surface 11 of the die 10. By performing a predetermined operation with respect to the position and direction of the first ejection hole 13, the second ejection hole 14, the third ejection hole 15 and the fourth ejection hole 16 formed on the ejection surface 11, The first ejection hole 13, the second ejection hole 14, the third ejection hole 15, and the fourth ejection hole 16 are swung so that an air flow whose strength fluctuates temporally and/or spatially is hit.

Even in the first modification applied to a die having a plurality of ejection holes, the starting point of the rocking operation corresponding to a predetermined ejection hole is shown as the rocking operation of the first mode in FIG. The upper left of the corresponding discharge hole toward the discharge surface 11 will be described, but as shown in FIG. 2B as the swing motion of the second mode, the start point of the swing motion corresponding to a predetermined discharge hole. May be directly above the corresponding ejection hole toward the ejection surface 11.

In the first modified example, the first nozzle 2 and the second nozzle 3 are located on the upper left side of the ejection surface 11 of the die 10 toward the first ejection hole 13 and face the ejection surface 11 at a predetermined interval. The first position P1 at which the gas is jetted downward at a predetermined angle with the discharge surface 11 is at substantially the same height as the first position P1, and is located at the upper right side toward the first discharge hole 13 of the discharge surface 11. A second upper left side of the second discharge hole 14 that faces the discharge surface 11 at a predetermined interval and injects gas downward at a predetermined angle with the discharge surface 11. The position P2 is at substantially the same height as the first position P1 and the second position P2, and is on the upper right side toward the second ejection hole 14 of the ejection surface 11 and on the upper left side toward the third ejection hole 15, A third position P3, which faces the ejection surface 11 with a predetermined interval and injects gas downward at a predetermined angle with the ejection surface 11, a first position P1, a second position P2, and a third position P3. It is located at substantially the same height as the position P3, is located at the upper right of the third ejection hole 15 of the ejection surface 11 and is located at the upper left of the fourth ejection hole 16, and opposes the ejection surface 11 at a predetermined interval. Then, the fourth position P4 that makes a predetermined angle with the ejection surface 11 and injects the gas downward, and the first position P1, the second position P2, the third position P3, and the fourth position P4 have substantially the same height. The discharge surface 11 is located on the upper right side of the fourth discharge hole 16 and faces the discharge surface 11 with a predetermined space, and forms a predetermined angle with the discharge surface 11 toward the lower side. A predetermined operation is performed along the row of the first ejection hole 13, the second ejection hole 14, the third ejection hole 15, and the fourth ejection hole 16 with respect to the fifth position P5 for ejecting. This operation is performed so that the airflow whose strength fluctuates temporally and/or spatially is applied to the periphery of the first ejection hole 13, the second ejection hole 14, the third ejection hole 15, and the fourth ejection hole 16 of the ejection surface 11. It includes a swinging motion.

In the first modified example, the first nozzle 2, the second nozzle 3, and the second nozzle 3 are used to form the first ejection hole 13, the second ejection hole 14, the third ejection hole 15, and the fourth ejection hole 16 of the ejection surface 11. An airflow whose intensity varies temporally and/or spatially can be applied to the surroundings of the. Therefore, the first strand 101, the second strand 102, the third strand 103, and the fourth strand 103 discharged from the first discharge hole 13, the second discharge hole 14, the third discharge hole 15, and the fourth discharge hole 16 of the discharge surface 11 The deposits generated around the strands 104 or the first discharge holes 13, the second discharge holes 14, the third discharge holes 15, and the fourth discharge holes 16 of the discharge surface 11 are blown off by an air current whose strength varies, and these deposits Can be sufficiently removed in a short time. Further, in the first modified example, the first nozzle 2, the second nozzle 3, the second nozzle 3, the second nozzle 14, the third nozzle 15, and the fourth nozzle 15 are used by the two nozzles of the first nozzle 2 and the second nozzle 3. By simultaneously applying air currents to the periphery of 16 from different directions, it is possible to reliably remove the deposits.

The operation of the first nozzle 2 and the second nozzle 3 in the first modified example is the same as that of the single nozzle 1 as the operation of the first mode in FIG. The swing motion may be performed for each of the hole 14, the third discharge hole 15, and the fourth discharge hole 16. In this case, as the swing motion corresponding to the first discharge hole 13, the discharge surface 11 is moved from the first position P1 which is the starting point of the swing motion corresponding to the first discharge hole 13 to the second position P2. The first nozzle 2 and the second nozzle 3 move in the forward direction in a substantially horizontal direction beyond just above the first discharge hole 13 to a predetermined folding end point, and proceed substantially horizontally from the folding end point to the first position P1. The operation of a predetermined amplitude that moves in the opposite direction and returns is defined as the first cycle, and the first cycle is repeated a predetermined number of times. Subsequent to the rocking motion corresponding to the first ejection hole 13, the starting point of the rocking motion corresponding to the second ejection hole 14 from the first position P1, which was the starting point of the rocking motion corresponding to the first ejection hole 13. Then, the first nozzle 2 and the second nozzle 3 are translated to the second position P2 which is defined as follows, and as a swinging motion corresponding to the second discharge hole 14, the discharge surface 11 is moved from the second position P2 to the third position P3. Toward the predetermined folding end point over the second ejection hole 14 in the substantially horizontal direction in the forward direction, and then proceeds from the folding end point to the second position P2 in the substantially horizontal direction in the reverse direction and returns. The amplitude operation is the second cycle, and the second cycle is repeated a predetermined number of times. Subsequent to the swinging motion corresponding to the second discharge hole 14, the swinging motion corresponding to the third discharge hole 15 is started from the second position P2 which was the starting point of the swinging motion corresponding to the second discharge hole 14. Then, the first nozzle 2 and the second nozzle 3 are translated to the third position P3 which is defined as follows, and as a swinging motion corresponding to the third discharge hole 15, the discharge surface 11 is moved from the third position P3 to the fourth position P4. Toward the predetermined folding end point over the third discharge hole 15 in the substantially horizontal direction in the forward direction, and then proceeds from the folding end point to the third position P3 in the substantially horizontal direction in the reverse direction and returns. The amplitude operation is the third cycle, and the third cycle is repeated a predetermined number of times. Subsequent to the rocking motion corresponding to the third ejection hole 15, the starting point of the rocking motion corresponding to the fourth ejection hole 16 from the third position P3, which was the starting point of the rocking motion corresponding to the third ejection hole 15. The first nozzle 2 and the second nozzle 3 are translated to the fourth position P4 which becomes, and as the swinging motion corresponding to the fourth discharge hole 16, the discharge surface 11 is moved from the fourth position P4 to the fifth position P5. Toward the predetermined folding end point over the fourth discharge hole 16 in the substantially horizontal direction in the forward direction, and then proceeds from the folding end point to the fourth position P4 in the substantially horizontal direction in the reverse direction and returns. The amplitude operation is the fourth cycle, and the fourth cycle is repeated a predetermined number of times. After completing such a series of operations, the first nozzle 2 and the second nozzle 3 may be returned to the first position P1 which is the starting point of the swinging operation corresponding to the first ejection hole 13. The first cycle, the second cycle, the third cycle, and the fourth cycle of a predetermined number of times may be combined into one cycle, and this cycle may be repeated a predetermined number of times.

Further, the operation of the first nozzle 2 and the second nozzle 3 in the first modified example is the same as that of the single nozzle 1 as the operation of the second mode in FIG. Like the two ejection holes 14 and the third ejection hole 15 and the fourth ejection hole 16, two ejection holes may be set as one set and the swinging operation may be performed for each. In this case, as the rocking motion corresponding to the first ejection hole 13 and the second ejection hole 14, from the first position P1 which is the starting point of the rocking motion corresponding to the first ejection hole 13 and the second ejection hole 14. Toward the third position P3, the first nozzle 2 and the second nozzle 3 are arranged in a substantially horizontal direction toward the ejection surface 11 beyond just above the first ejection hole 13 and the second ejection hole 14 to a predetermined folding end point. The first cycle is an operation of a predetermined amplitude in which the first cycle is repeated by moving in the direction, moving from the folding end point to the first position P1, and moving in the reverse direction in the substantially horizontal direction in the reverse direction. Following the swinging motion corresponding to the first discharge hole 13 and the second discharge hole 14, from the first position P1 which was the starting point of the swinging motion corresponding to the first discharge hole 13 and the second discharge hole 14, The first nozzle 2 and the second nozzle 3 are translated to the third position P3 which is the starting point of the swinging motion corresponding to the third discharge hole 15 and the fourth discharge hole 16, and the third discharge hole 15 and the fourth discharge hole 16 are caused to move. As a corresponding swinging operation, from the third position P3 to the fifth position P5, in a substantially horizontal direction toward the ejection surface 11 beyond just above the third ejection hole 15 and the fourth ejection hole 16 to a predetermined folding end point. The operation of a predetermined amplitude is moved to the forward direction, moves to the third position P3 from the folding end point in the reverse direction in the substantially horizontal direction, and returns to the second cycle. The second cycle is repeated a predetermined number of times. After completing such a series of operations, the first nozzle 2 and the second nozzle 3 may be returned to the first position P1 which is the starting point of the swinging operation corresponding to the first ejection hole 13 and the second ejection hole 14. .. The predetermined number of times of the first cycle and the second cycle may be combined into one cycle, and this cycle may be repeated a predetermined number of times.

Further, the operations of the first nozzle 2 and the second nozzle 3 in the first modified example are the same as those of the single nozzle 1 as the operation of the third aspect in FIG. The swing operation may be performed by collectively using the four discharge holes of the second discharge hole 14, the third discharge hole 15, and the fourth discharge hole 16. In this case, the rocking motion corresponding to the first ejection hole 13, the second ejection hole 14, the third ejection hole 15, and the fourth ejection hole 16 is the first ejection hole 13, the second ejection hole 14, and the third ejection hole. The first nozzle 2 and the second nozzle 3 move forward in a substantially horizontal direction from the first position P1 to the fifth position P5, which is the starting point of the swinging motion corresponding to the discharge holes 15 and the fourth discharge holes 16, to proceed in the forward direction. The operation of a predetermined amplitude that moves in the reverse direction from the fifth position P5, which is the turn-back end point, to the first position P1 and returns substantially horizontally is defined as one cycle, and this cycle is repeated a predetermined number of times.

FIG. 9 is a perspective view showing an adhering matter removing device according to a second modified example. In the die 10, the four first discharge holes 13, the second discharge holes 14, the third discharge holes 15, and the fourth discharge holes 16 each having a predetermined diameter are provided at the substantially vertical center of the discharge surface 11 extending in the substantially vertical direction. Of the discharge holes are formed side by side in a row at a predetermined interval in a substantially horizontal direction. From the first discharge hole 13, the second discharge hole 14, the third discharge hole 15, and the fourth discharge hole 16, the first strand 101, the second strand 102, the third strand 103, and the fourth strand 104 have predetermined lines. Discharged at a speed.

The adhered matter removing device of the second modified example has five nozzles of a first nozzle 21, a second nozzle 22, a third nozzle 23, a fourth nozzle 24, and a fifth nozzle 25 which inject gas at a predetermined flow rate. doing. The first nozzle 21 is located on the upper left side of the ejection surface 11 of the die 10 toward the first ejection hole 13, faces the ejection surface 11 with a predetermined interval, and forms a predetermined angle with the ejection surface 11 to form a gas. Is in the first position P1 for injecting. The second nozzle 22 is located at substantially the same height as the first position P1, is located on the upper right side of the ejection surface 11 toward the first ejection hole 13, and is located on the upper left side of the second ejection hole 14 on the ejection surface 11. At a second position P2, which is opposed to the discharge surface 11 at a predetermined interval and injects gas at a predetermined angle with the discharge surface 11. The third nozzle 23 is located at substantially the same height as the first position P1 and the second position P2, and is located on the upper right side toward the second ejection hole 14 of the ejection surface 11 and on the upper left side toward the third ejection hole 15. The third position P3 is opposed to the ejection surface 11 at a predetermined interval and injects gas at a predetermined angle with the ejection surface 11. The fourth nozzle 24 is at substantially the same height as the first position P1, the second position P2, and the third position P3, and is located on the upper right side of the third ejection hole 15 of the ejection surface 11 and with respect to the fourth ejection hole 16. It is located on the upper left side, faces the ejection surface 11 at a predetermined interval, and is in a fourth position P4 for ejecting gas at a predetermined angle with the ejection surface 11. The fifth nozzle 25 is located at substantially the same height as the first position P1, the second position P2, the third position P3, and the fourth position P4, and is located on the upper right side of the ejection surface 11 toward the fourth ejection hole 16. It is located at a fifth position P5, which is opposed to the ejection surface 11 with a predetermined interval and injects gas at a predetermined angle with the ejection surface 11.

Each of the first nozzle 21, the second nozzle 22, the third nozzle 23, the fourth nozzle 24, and the fifth nozzle 25 is driven by a driving unit (not shown) around a predetermined axis, and is located at the first position P1. Reference numeral 21 denotes an angular range including the directions of the adjacent first ejection holes 13, second nozzle 22 at the second position P2 has an angular range including the adjacent first ejection holes 13 and second ejection holes 14, and a third position. The third nozzle 23 at P3 is in an angular range including the adjacent second ejection hole 14 and the third ejection hole 15, and the fourth nozzle 24 at the fourth position P4 is the adjacent third ejection hole 15 and the fourth ejection hole. In the angle range including 16, the fifth nozzle 25 at the fifth position P5 rotates so as to oscillate at a predetermined rotation speed in the angle range including the adjacent fourth ejection hole 16.

In the second modified example, the first nozzle 21, the second nozzle 22, the third nozzle 23, the fourth nozzle 24, and the fifth nozzle 25 are used to form the first ejection hole 13 of the ejection surface 11 and the second nozzle An air flow whose strength fluctuates temporally and/or spatially can be applied to the periphery of the ejection holes 14, the third ejection holes 15, and the fourth ejection holes 16. Therefore, the first strand 101, the second strand 102, the third strand 103, and the fourth strand 103 discharged from the first discharge hole 13, the second discharge hole 14, the third discharge hole 15, and the fourth discharge hole 16 of the discharge surface 11 The deposits generated around the strands 104 or the first discharge holes 13, the second discharge holes 14, the third discharge holes 15, and the fourth discharge holes 16 of the discharge surface 11 are blown off by an air current whose strength varies, and these deposits Can be sufficiently removed in a short time. Further, in the second modified example, the first nozzle 21 and the second nozzle 22 are discharged to the first discharge hole 13, the second nozzle 22 and the third nozzle 23 are discharged to the second discharge hole 14, and the third discharge is performed. Since the third nozzle 23 and the fourth nozzle 24 correspond to the hole 15 and the fourth nozzle 24 and the fifth nozzle 25 correspond to the fourth ejection hole 16, respectively, the first ejection hole 13 of the ejection surface 11 corresponds. A sufficient flow rate of airflow is supplied from different directions around the second discharge hole 14, the third discharge hole 15, and the fourth discharge hole 16, and the deposit can be reliably removed.

FIG. 10 is a diagram showing an adhering matter removing device according to a third modified example. FIG. 10A is a perspective view of the third modification, and FIG. 10B is a cross-sectional view taken along the section line XX of FIG. 10A of the third modification. In the die 10, a single discharge hole 12 having a predetermined diameter is formed at a position slightly below the center of the discharge surface 11 extending in the substantially vertical direction. The molten resin strands 100 are discharged from the discharge holes 12 at a predetermined linear velocity.

The adhered matter removing device of the third modified example is located on the discharge surface 11 immediately above the discharge hole 12 and rotates along the discharge surface 11 around a predetermined axis 30 at a predetermined rotation speed to discharge gas. A single nozzle 31 that injects a predetermined flow rate along the nozzle 11 and a nozzle 31 that covers the nozzle 31 that rotates on the discharge surface 11 and that includes a discharge hole 12 that is immediately below the shaft 30 in the circumferential direction in which the nozzle 31 rotates. And a hood 32 provided with an opening 33 over the angular range of.

In the third modification, the gas sprayed from the nozzle 31 is guided so as to be sprayed from the opening 33 of the hood 32 in the hood 32 covering the nozzle 31. From the opening 33 of the hood 32, an air flow having a strength that temporally and/or spatially varies depending on the rotation of the nozzle 31 and includes a predetermined discharge hole 12 of the discharge surface 11 in the circumferential direction of the rotation of the nozzle 31. It is possible to make the air flow, which is jetted within the angular range and whose strength varies temporally and/or spatially, around the ejection holes 12 of the ejection surface 11. Therefore, the strands 100 ejected from the ejection holes 12 of the ejection surface 11 or the deposits generated around the ejection holes 12 of the ejection face 11 are blown off by an air flow whose strength varies, and these deposits are sufficiently removed in a short time. can do. In the third modified example, the temporal and/or spatial variation in the strength of the air flow ejected from the opening 33 of the hood 32 due to the rotation of the nozzle 31 is secured. Therefore, in the third modification, the adhering matter can be reliably removed by the sufficient fluctuation of the air flow.

FIG. 11 is a perspective view showing an adhering matter removing device of a fourth modified example. In the die 10, the four first discharge holes 13, the second discharge holes 14, the third discharge holes 15, and the fourth discharge holes 16 each having a predetermined diameter are provided at the substantially vertical center of the discharge surface 11 extending in the substantially vertical direction. Of the discharge holes are formed side by side in a row at a predetermined interval in a substantially horizontal direction. From the first discharge hole 13, the second discharge hole 14, the third discharge hole 15, and the fourth discharge hole 16, the first strand 101, the second strand 102, the third strand 103, and the fourth strand 104 have predetermined lines. Discharged at a speed.

The adhered matter removing device of the fourth modified example has a predetermined interval above the ejection surface 11 from the first ejection hole 13, the second ejection hole 14, the third ejection hole 15, and the fourth ejection hole 16 arranged in a row. Therefore, the pipe 35 is arranged so as to extend in a substantially horizontal direction along this one row. A gas having a predetermined pressure is supplied to the pipe 35, and a first injection hole 35A and a second injection hole 35B are formed at predetermined positions below the pipe 35 so as to inject the gas in a predetermined direction. There is. As shown in the drawing, a first injection hole 35A for injecting gas in the lower right direction toward the ejection surface 11 and a second injection hole 35B for injecting gas in the lower left direction toward the ejection surface 11 are formed. They are formed alternately. In the pipe 35, the first ejection hole 13, the second ejection hole 14, the third ejection hole 14, the third ejection hole 15, and the third ejection hole 15 of the ejection surface 11 are provided above the first ejection hole 13, the second ejection hole 14, the third ejection hole 15, and the fourth ejection hole 16. A pair of first injection holes 35A and second injection holes 35B are formed so that the airflows hit the discharge holes 15 and the fourth discharge holes 16, respectively. The pipe 35 is swung at a predetermined distance along a direction in which the pipe 35 extends at a predetermined cycle.

In the fourth modified example, the first ejection hole 13, the second ejection hole 14, the third ejection hole 15, and the fourth ejection hole 16 of the ejection surface 11 each have a pair of first ejections formed in the upper pipe 35. Gas is ejected from the holes 35A and the second ejection holes 35B, and the strength is temporal and/or temporal around the first ejection hole 13, the second ejection hole 14, the third ejection hole 15, and the fourth ejection hole 16 on the ejection surface. It is possible to impinge a spatially varying air flow. Therefore, the first strand 101, the second strand 102, the third strand 103 and the fourth strand 103 discharged from the first discharge hole 13, the second discharge hole 14, the third discharge hole 15 and the fourth discharge hole 16 of the discharge surface 11 The deposits generated around the strands 104 or the first discharge holes 13, the second discharge holes 14, the third discharge holes 15, and the fourth discharge holes 16 of the discharge surface 11 are blown off by an air flow whose strength changes, and these deposits are generated. Can be sufficiently removed in a short time. In addition, in the fourth modified example, since it is sufficient to swing the pipe 35 in the extending direction, driving is easy. Further, even when applied to the die 10 having a different number of discharge holes, it can be easily dealt with by changing the length of the pipe 35.

Hereinafter, the content of the present invention will be specifically described with reference to Examples and Comparative Examples, but the present invention is not limited thereto.

[Example 1]
Polyacetal resin (polyacetal copolymer obtained by copolymerizing 96.7% by mass of trioxane and 3.3% by mass of 1,3-dioxolane (melt mass flow rate (measured according to ISO 1133 at a temperature of 190° C. and a load of 2160 g)) : 2.5 g/10 min) 100 parts by mass, 7 parts by mass of a graft copolymer having a main chain of polyethylene and a side chain of an acrylonitrile-styrene copolymer, and a hindered phenolic antioxidant (product name: 0.5 parts by mass of Irganox 1010 (manufactured by BASF Japan Ltd.) are charged into a twin-screw extruder (TEX65 manufactured by Japan Steel Works), barrel setting temperature: 200° C., die setting: 170° C., temperature screw rotation speed: 280 rpm. The extrusion rate was 350 kg/h, and the extruded strands were conveyed to the cutter 60 through the water bath 50 as shown in Fig. 3. The discharge surface 11 was in a line. Twenty-four circular discharge holes having a diameter of 4.0 mm arranged side by side were installed.

As the deposit removing device, the one of the first modified example having two nozzles was used. Air is sent to a heater with a preset temperature of 350°C at a flow rate of 30 L/min using a compressor for heating, and then this is supplied to a nozzle with a cylindrical cross section with an inner diameter of 2 mm and a length of 50 mm, and is jetted from the tip of the nozzle to the vicinity of the discharge hole. Let The distance between the tip of the nozzle and the resin ejection surface was 5 mm. The temperature of the gas in the vicinity of the discharge hole is lower than the set temperature of 350° C. of the heater depending on the gas flow rate, the shape of the nozzle, the distance between the nozzle tip and the resin discharge surface, and the like. Each of the ejection holes was rocked twice with the center distance of the adjacent ejection hole as the amplitude, and then translated to the rocking start position of the adjacent ejection hole. The extrusion was continued for 60 hours, but during that period, the operation for removing the deposit was unnecessary.

Table 1 shows the conditions of Example 1 and the results of removing the deposits. Table 1 also shows the following Examples 2 to 4 and Comparative Example 1.

[Example 2]
The same operation as in Example 1 was performed, except that the swinging of the adhered matter removing device was performed not for the respective discharge holes but for the entire discharge holes by continuously swinging the discharge holes at the intervals of the both ends. went. It was necessary to perform the deposit removal operation during extrusion once every 30 hours.

[Example 3]
The same operation as in Example 1 was performed except that the air sent to the nozzle of the deposit removing device was not heated. It was necessary to perform the deposit removal operation during extrusion once every 8 hours.

[Example 4]
The same operation as in Example 1 was performed, except that the air sent to the nozzle of the adhered matter removing device was not heated and the rocking with the interval between the discharge holes at both ends as the amplitude was continued. It was necessary to perform the deposit removal operation during extrusion once every 5 hours.

[Comparative Example 1]
Extrusion similar to that of Example 1 was carried out without using the deposit removing device. The deposit removal operation during extrusion had to be performed once every 20 minutes.

[Example 5]
100 parts by weight of polybutylene terephthalate resin (intrinsic viscosity (measured in o-chlorophenol at a temperature of 35° C.): 0.69 dL/g) and 45 parts by weight of glass fiber having a fiber diameter of 13 μm were combined with a twin-screw extruder ( It was put into TEX65 manufactured by Japan Steel Works and extruded at a barrel setting temperature: 250° C., a die setting temperature: 270° C., a screw rotation speed: 280 rpm, and an extrusion rate: 350 kg/h. Further, the extruded strands were conveyed to the cutter 60 via the water bath 50 as shown in FIG. On the

discharge surface

11, 21 circular discharge holes having a diameter of 4.0 mm arranged in a line were installed.

Table 2 shows the conditions of Example 5 and the results of removing deposits. Table 2 also shows the following Examples 6 to 8 and Comparative Example 2.

[Example 6]
The same operation as in Example 5 was performed except that the swinging of the adhered matter removing device was performed not for the respective discharge holes but for the entire discharge holes by continuously swinging the discharge holes at the intervals of the both ends. went. It was necessary to carry out the operation for removing eye blemishes during extrusion once every 25 hours.

[Example 7]
The same operation as in Example 5 was performed except that the air sent to the nozzle of the deposit removing device was not heated. It was necessary to perform the deposit removal operation during extrusion once every 7 hours.

[Example 8]
The same operation as in Example 5 was performed, except that the air sent to the nozzle of the adhered matter removing device was not heated and the rocking with the interval between the discharge holes at both ends as the amplitude was continued. The deposit removal operation during extrusion had to be performed once every 4.5 hours.

[Comparative Example 2]
Extrusion similar to that of Example 5 was carried out without using the deposit removing device. It was necessary to carry out the operation for removing the eye tarpaulin during the extrusion once every 20 minutes.

1 Nozzle 2 1st Nozzle 3 2nd Nozzle 10 Die 11 Discharge Surface 12 Discharge Hole 13 First Discharge Hole 14 Second Discharge Hole 15 Third Discharge Hole 16 Fourth Discharge Hole 100 Strand 101 First Strand 102 Second Strand 103 No. 3 strand 104 4th strand

Claims

A deposit removing device for removing a strand of molten resin discharged from a discharge hole formed on a discharge surface of a die and/or a deposit generated around the discharge hole,
An adhering substance removing device including an ejecting unit that ejects gas so that an airflow whose intensity fluctuates temporally and/or spatially hits the periphery of the discharge hole so that the adhering substance is removed.
The injection means,
A nozzle that injects gas,
Drive means capable of controlling the position and/or orientation of the nozzle,
The driving means drives the nozzle so as to perform a predetermined operation with respect to its position and/or direction so that an airflow whose intensity fluctuates temporally and/or spatially strikes the discharge hole. The deposit removing device according to 1.
The deposit removing device according to claim 2, wherein the drive unit controls the position of the nozzle so that the nozzle operates with a predetermined gap between the nozzle and the ejection surface.
The adhering matter removing device according to claim 2, wherein the drive means controls the position of the nozzle so that the nozzle operates while varying the distance from the ejection surface.
The adhering matter removing device according to any one of claims 2 to 4, wherein the driving means controls the direction of the nozzle so as to have a predetermined angle with respect to the ejection surface.
The predetermined operation includes a rocking operation of rocking the nozzle in a position and/or a direction so that an air flow whose strength fluctuates temporally and/or spatially hits a predetermined discharge hole. The deposit removing device according to any one of 2 to 5.
The deposit removing device according to any one of claims 2 to 6, wherein the spraying means includes two or more nozzles that can simultaneously apply airflow around one discharge hole from different directions.
The deposit removing device according to claim 7, further comprising a support base that supports the two or more nozzles, and the drive unit drives the two or more nozzles via the support base.
The deposit removing device according to claim 8, wherein the support base can adjust a distance between the two or more nozzles and a direction of the two or more nozzles.
3. A plurality of discharge holes are formed in a line in the horizontal direction on the discharge surface, and the drive means controls the position of the nozzle so as to perform a predetermined operation along the discharge holes in the one line. 11. The deposit removing device according to any one of 9 to 9.
The deposit removing device according to claim 10, wherein the predetermined operation includes a translational operation of translating the nozzle from a position corresponding to a predetermined ejection hole to a position corresponding to another ejection hole of the ejection hole.
The adhering matter removing device according to claim 1, wherein the injecting unit includes a nozzle that is rotatable about a predetermined axis and injects a gas.
The deposit removing device according to claim 12, wherein the nozzle is rotatable about the predetermined axis over a predetermined angle range including directions of adjacent ejection holes.
The nozzle is rotatable about a predetermined axis along a discharge surface, covers a rotatable range of the nozzle on the discharge surface, and includes adjacent discharge holes in a circumferential direction in which the nozzle is rotatable. The deposit removing device according to claim 12, further comprising a hood which is opened only in a predetermined angle range and guides the gas jetted from the nozzle to the opened range.
The deposit removing device according to claim 1, wherein the injection unit includes a pipe that extends along the ejection surface and has an injection hole that ejects gas, and the pipe is movable along the ejection surface. ..
The deposit removing device according to claim 15, wherein the pipe extends in one direction, and the pipe is movable along the one direction.
The deposit removal according to claim 16, wherein the pipe is swung so that an air flow whose strength fluctuates temporally and/or spatially hits a predetermined discharge hole by the gas injected from the injection hole. apparatus.
The deposit removing device according to any one of claims 1 to 17, wherein the spraying unit sprays a gas at a predetermined flow rate.
The deposit removing device according to any one of claims 1 to 18, further comprising gas supply means for supplying gas to the injection means.
The deposit removing device according to any one of claims 1 to 19, further comprising pressure adjusting means for adjusting the pressure of the gas supplied to the injection means.
The deposit removing device according to any one of claims 1 to 20, further comprising a gas heating unit that heats a gas supplied to the injection unit.
A method for removing deposits for removing a strand of molten resin discharged from a discharge hole formed on a discharge surface of a die and/or a deposit formed around the discharge hole,
A method for removing deposits, which comprises a spraying step of spraying a gas so that an air flow whose strength fluctuates temporally and/or spatially hits the periphery of the discharge holes so that the deposits are removed.
The injecting step controls a position and/or a direction of a nozzle for injecting a gas, and the airflow of which the intensity fluctuates temporally and/or spatially is applied to the ejection hole around a predetermined ejection hole. The deposit removing method according to claim 22, further comprising a driving step of driving the nozzle so as to perform a predetermined operation with respect to its position and/or direction.
The deposit removing method according to claim 23, wherein in the spraying step, the nozzle is driven so as to have a predetermined distance from the discharge surface.
24. The deposit removing method according to claim 23, wherein the driving step drives the nozzle so that a distance between the nozzle and the ejection surface varies.
26. The deposit removing method according to claim 23, wherein the driving step drives the nozzle so as to have a predetermined angle with respect to the ejection surface.
24. The driving step includes a rocking step of rocking the nozzle with respect to a position and/or a direction so that an airflow having a temporally and/or spatially varying intensity hits a predetermined discharge hole. 27. The method for removing deposits according to any one of 26 to 26.
The deposit according to any one of claims 23 to 26, wherein a plurality of discharge holes are formed in a line in the horizontal direction on the discharge surface, and the driving step drives the nozzles along the line of the discharge holes. Removal method.
The driving step includes a swinging step of swinging the nozzle in a position and/or a direction so that an air flow whose intensity fluctuates temporally and/or spatially hits a predetermined discharge hole, and a predetermined discharge. 29. The deposit removing method according to claim 28, wherein a translation step of translating the nozzle from a position corresponding to a hole to a position corresponding to another ejection hole is alternately repeated.
23. The jetting step according to claim 22, wherein the jetting step includes a driving step of driving to rotate a nozzle for jetting a gas that is rotatable around a predetermined axis over a predetermined angular range including a direction of an adjacent ejection hole. How to remove deposits.
The jetting step is covered by a hood that is rotatable about a predetermined axis along the discharge surface and that is open only in a predetermined angle range that includes circumferentially adjacent discharge holes that are rotatable on the discharge surface. 23. The deposit removing method according to claim 22, further comprising a driving step of driving to rotate the nozzle for injecting the gas.
23. The deposit according to claim 22, wherein the injecting step includes a driving step of driving to move a pipe having an injection hole extending along the ejection surface and ejecting a gas that is movable along the ejection surface. Removal method.
The driving step includes a rocking step in which the pipe is rocked so that an air flow whose strength temporally and/or spatially fluctuates around a predetermined discharge hole by the gas injected from the injection hole. Item 32. A method for removing deposits according to Item 32.
The deposit removing method according to any one of claims 22 to 33, wherein the injecting step injects a gas at a predetermined flow rate.
The deposit removing method according to any one of claims 22 to 34, wherein the spraying step further includes a gas supply step of supplying a gas to be sprayed.
The deposit removing method according to any one of claims 22 to 35, wherein the injecting step further includes a pressure adjusting step of adjusting the pressure of the gas to be injected.
The method of removing deposits according to any one of claims 22 to 36, wherein the spraying step further includes a gas heating step of heating the sprayed gas.