JP5426152B2 - Caret removal device - Google Patents

Description

  In the present invention, when a scribe line is formed on a brittle material such as a glass plate, a cullet such as scraps and chips generated when a brittle material such as a glass plate is broken is surely brought into contact with the brittle material. The present invention relates to a cullet removal device that can be removed.

  When a glass substrate is manufactured, a scribe line is generally formed on the surface of a glass substrate that is a brittle material, and a predetermined load is applied to the glass substrate to break the glass substrate to a desired size. When a scribe line is formed, the surface of the glass substrate is shaved, and when a break occurs, a crack or the like is generated, so that glass waste called cullet, glass chips and the like are always generated.

  In order to remove powdery dust such as cullet generated by processing a brittle material, for example, in Patent Document 1, air such as paper dust is blown almost uniformly over the entire width of the surface of a punched sheet to be conveyed. There is disclosed a dust collecting device that sucks up dust such as paper dust that has risen with air that bounces up and rebounds from the surface of the sheet. Further, Patent Document 2 discloses a glass plate cutting method in which air is blown onto a planned cutting line at an angle of 20 to 40 degrees with respect to the surface of a stationary glass substrate, and glass dust is sucked and discharged by a suction nozzle. .

Furthermore, in Patent Document 3, the processing air is blown out in a direction at an angle of about 45 degrees with respect to the traveling paper sheet, and dust such as paper dust is floated by the attracted ambient air, so that the processing air, the ambient air, the paper dust, etc. A paper dust removing device for sucking dust is disclosed.
JP-A-10-71596 JP 2006-89325 A JP 2006-26752 A

  However, it is not possible to guarantee that 100% of the floated dust is sucked by the method of blowing powdered air so as to float and suck the dust as disclosed in Patent Documents 1 to 3. Therefore, there is a high possibility that the surrounding environment is contaminated by powdered dust that has not been sucked, and it is difficult to withstand continuous use for a long time from the viewpoint of the health of the operator.

  In addition, an apparatus for removing cullet by bringing a blade into contact with the surface of a glass substrate, such as an automobile wiper, has been developed. However, the cullet is often generated on the cut surface, and the cullet generated when the scribe line is formed is brought into the scribe line by the blade and may be scattered during the break.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a non-contact type cullet removing apparatus that can reliably suck powder dust without scattering around.

  In order to achieve the above object, a cullet removing apparatus according to a first aspect of the present invention is a cullet removing apparatus that sucks and removes cullet that is generated when a brittle material is scribed or broken. A gas injection unit provided at an upper part of at least one of the passage part, the gas passage part, one end opened to the gas passage part, and the other end connected to a gas injection mechanism that injects gas; A straight pipe portion having a constant cross-sectional shape connected between the lower end portions of the gas passage portion, and a suction opening portion that opens at the upper end portions of the pair of gas passage portions and is connected to a suction mechanism that sucks gas. And a cullet suction port which is opened below the straight pipe portion is formed.

  In the first aspect of the present invention, a pair of gas passage portions for guiding the rising and lowering airflows respectively and at least one upper portion of the gas passage portion, one end is opened to the gas passage portion, and the other end injects gas. The gas injection unit connected to the gas injection mechanism, and the straight pipe part having a constant cross-sectional shape connected between the lower end parts of the pair of gas passage parts, and the upper end part of the pair of gas passage parts, And a suction opening connected to a suction mechanism for sucking gas. Gas is jetted from either one of the gas jetting parts, and is sucked by the suction device from one gas passage part to the other gas passage part via the straight pipe part. A cullet suction port is formed below the straight pipe part, a negative pressure is generated by a laminar flow of gas generated in the straight pipe part, and ambient air in the vicinity of the cullet suction port is sucked from the cullet suction port.

  Therefore, the cullet existing in the vicinity of the cullet suction port is sucked from the cullet suction port to the inside, and is discharged to the outside through the other gas passage part. In addition, since no gas is blown onto the cullet, the cullet is not scattered to the surrounding environment, such as rising, and only the cullet can be reliably sucked without contact with a brittle material such as a glass plate. Furthermore, by appropriately selecting the gas injection part and the gas passage part, it is possible to switch the flow direction of the internal gas in accordance with the relative movement direction of the brittle material and the apparatus, and to move in any direction. Even in this case, the cullet can be effectively sucked.

  The cullet removing device according to a second aspect of the present invention is the first aspect of the present invention, wherein the straight pipe portion is disposed such that a central axis is substantially parallel to a surface of a brittle material supported below the cullet suction port. It is characterized by being.

  In the second aspect of the invention, the straight pipe portion is disposed so that the central axis is substantially parallel to the surface of the brittle material supported below the cullet suction port. A laminar flow of gas that is substantially parallel occurs. Due to the negative pressure generated due to the laminar flow, the ambient air near the cullet suction port is sucked from the cullet suction port, and the cullet can be sucked together with the ambient air.

  Moreover, the cullet removing apparatus according to a third aspect of the present invention is the first or second aspect of the present invention, wherein the gas injection part is provided on each of the gas passage parts, and one end of the gas injection part is the gas passage part. And the other end is connected to the gas injection mechanism via an injection selection switching unit that selects gas to be injected from either one of the gas injection units. It has a flow path switching unit that switches so that either one of the upper end parts is connected to the suction opening, and gas is supplied from one of the pair of gas injection units according to the relative movement direction of the brittle material. The flow path switching portion is switched so that the upper end portion of the gas passage portion provided with the other gas injection portion is connected to the suction opening portion.

  In 3rd invention, the gas injection part is provided in each upper part of a gas passage part, one end of the gas injection part is opened to the gas passage part, and the other end receives gas from either one of the gas injection parts It is connected to the gas injection mechanism via an injection selection switching unit that selects to be injected. It has a flow path switching part that switches so that either one of the upper ends of the pair of gas passage parts is connected to the suction opening, and depending on the relative movement direction of the brittle material, The flow path switching unit is switched so that the gas is injected from either one and the upper end portion of the gas passage unit provided with the other gas injection unit is connected to the suction opening. Therefore, the flow direction of the internal gas can be switched according to the relative movement direction of the brittle material and the device, and the brittle material moves in any direction relative to the device. It becomes possible to suck cullet effectively.

  The cullet removing apparatus according to a fourth aspect of the present invention is the cullet removing device according to the third aspect of the present invention, in which gas is injected from one of the pair of gas injection portions provided on the direction side where the brittle material approaches, and the direction in which the brittle material leaves The flow path switching unit is switched so that the upper end of the gas passage unit and the suction opening are connected.

  In the fourth invention, gas is injected from one gas injection portion provided on the side in which the brittle material such as a glass plate approaches, and the upper end portion of the gas passage portion and the suction opening are connected on the direction side in which the brittle material leaves. By switching in such a manner, the cullet can be effectively sucked according to the relative movement direction of the brittle material with respect to the present apparatus.

  A cullet removing apparatus according to a fifth aspect of the present invention is the cullet removing device according to any one of the first to fourth aspects, further comprising a rectifying member that rectifies the flow of the passing gas under the pair of gas injection units. It is characterized by being.

  In the fifth aspect of the invention, by arranging the rectifying member, the gas passing through the inside can be brought as close to the laminar flow as possible, and the cullet suction effect in the straight pipe portion is substantially the same as the relative movement direction of the brittle material. It can be made uniform in the orthogonal direction.

  The cullet removing apparatus according to the sixth invention is characterized in that, in the fifth invention, a plurality of the rectifying members are arranged in a direction substantially orthogonal to a relative movement direction of the brittle material.

  In the sixth aspect of the invention, by arranging a plurality of rectifying members in a direction substantially orthogonal to the relative movement direction of the brittle material, a more uniform gas flow can be generated, and the straight pipe portion is homogeneous. A laminar flow can be generated.

  The cullet removing apparatus according to a seventh aspect of the invention is characterized in that, in the sixth aspect, the plurality of rectifying members are arranged so that the size thereof decreases as the distance from the central portion increases.

  In the seventh aspect of the invention, the flow straightening member is arranged so as to be reduced in size as it moves away from the central portion, whereby a more uniform gas flow can be generated, and a uniform laminar flow can be generated in the straight pipe portion. Is possible.

  The cullet removing apparatus according to the eighth invention is characterized in that, in any one of the first to seventh inventions, the cross-sectional area of the pair of gas passage portions gradually decreases toward the lower side.

  In the eighth invention, the pair of gas passage portions gradually decrease in cross-sectional area as they go downward, so that the flow velocity increases as they go downward and a laminar flow having a constant flow velocity is generated in the straight pipe portion. Can do.

  With the above configuration, gas is injected from one of the gas injection units, and is sucked by the suction device from one gas passage unit to the other gas passage unit via the straight pipe unit. A cullet suction port is formed below the straight pipe part, a negative pressure is generated by a laminar flow of gas generated in the straight pipe part, and ambient air in the vicinity of the cullet suction port is sucked from the cullet suction port.

  Therefore, the cullet existing in the vicinity of the cullet suction port is sucked from the cullet suction port to the inside, and is discharged to the outside through the other gas passage part. In addition, since no gas is blown onto the cullet, the cullet is not scattered to the surrounding environment, such as rising, and only the cullet can be reliably sucked without contact with a brittle material such as a glass plate. Furthermore, by appropriately selecting the gas injection part and the gas passage part, it is possible to switch the flow direction of the internal gas in accordance with the relative movement direction of the brittle material and the apparatus, and to move in any direction. Even in this case, the cullet can be effectively sucked.

  Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments thereof. FIG. 1 is a schematic diagram showing a configuration of a cullet removing apparatus according to an embodiment of the present invention.

  As shown in FIG. 1, a cullet removing device 1 according to an embodiment of the present invention has a relative arrow on a scribe device for scribing a brittle material 3 such as a glass plate and / or a support base 2 of a break device for breaking. The cullet suction port 111 for sucking cullet is provided at the lower end portion of the main body 11. The cullet sucked from the cullet suction port 111 passes through the inside of the main body 11 and is sucked into the suction device (suction mechanism) 13 through the suction pipe 12.

  The gas sucked by the suction device 13 is jetted from the gas jetting device (gas jetting mechanism) 15 or 15 inside the main body 11 through the connected jet pipe 14. FIG. 2 is a cross-sectional view of the cullet removing apparatus 1 according to the embodiment of the present invention on a plane along the moving direction of the glass plate 3.

  In FIG. 2, gas passage portions 112 and 112, which are a pair of flow paths through which gas can flow, are formed in body portion 11 of cullet removal apparatus 1 according to the embodiment of the present invention. The gas passage portions 112 and 112 are formed so that the cross-sectional area gradually decreases as going downward. As a result, the flow velocity of the gas flowing inside is accelerated, and the generation of turbulence and vortex is prevented as much as possible.

  The upper ends of the gas passage portions 112 and 112 are joined together, and the suction pipe 12 is inserted into the suction opening 116 </ b> A of the suction pipe connecting member 116. The suction pipe 12 is connected to the suction device 13, and the gas inside the gas passage portions 112 and 112 is sucked up through the suction pipe 12.

  A switching valve (flow path switching section) 115 that switches the flow path to only one of the gas passage sections 112 is provided at the junction of the gas passage sections 112 and 112. When the switching valve 115 is switched in the direction indicated by the solid line in FIG. 2, the gas is sucked up from the gas passage 112 on the right side in FIG. 2, and the switching valve 115 is switched in the direction indicated by the broken line in FIG. In this case, the gas is sucked up from the gas passage 112 on the left side as viewed in FIG.

  In the vicinity of the upper end portion inside the gas passage portions 112 and 112, a pair of gas injection portions 113 and 113 for injecting a gas for generating an air flow, for example, a compressed gas, is provided. FIG. 3 is a schematic diagram illustrating a configuration of a gas injection mechanism including the gas injection unit 113. The gas injection unit 113 is provided with a plurality of holes 121, 121,... In a row in a main body 120 having a substantially cylindrical shape. The main body 120 is connected to a gas injection device 15 that supplies gas to the main body 120 via the injection pipe 14.

  The gas injection units 113 and 113 are controlled so that when either one is injecting gas, the other is not injected. That is, the gas injection units 113, 113 and the gas injection device 15 are connected to the flow path switching valve (injection selection switching unit) 130 via the injection tubes 14, 14, 14. The actuator 131 of the flow path switching valve 130 is connected to the control unit 200 together with the actuator 141 of the switching valve 115 and the movement mechanism unit 150 of the cullet removal apparatus 1 described above. The control unit 200 controls the operation of the movement mechanism unit 150 of the cullet removal device 1 to determine the movement direction of the cullet removal device 1, and interlocks with the movement direction to operate the actuator 141 of the switching valve 115 and the flow path switching valve. The operation of 130 actuators 131 is controlled to control the direction of the gas flowing inside. As a result, a gas flow having a constant velocity in a certain direction can be generated inside the cullet removing apparatus 1.

  FIG. 4 is a schematic diagram showing the relationship between the gas injection unit 113 and the switching valve 115. As shown in FIG. 4A, when the gas injection part 113A injects the compressed gas downward, the switching valve 115 moves the gas passage part 112A on the left side, that is, the gas passage part 112A on the side injecting the compressed gas. Switch to close. By doing in this way, the compressed gas injected from the gas injection part 113A is induced | guided | derived to the gas passage part 112B on the right side via the straight pipe part 114. Then, the gas is sucked upward by the suction device 13 connected via the suction pipe 12, thereby generating a counterclockwise gas flow.

  On the other hand, as shown in FIG. 4B, when the gas injection unit 113B injects the compressed gas downward, the switching valve 115 is on the left gas passage 112B, that is, the gas passage on the side injecting the compressed gas. Switch to close 112B. By doing in this way, the compressed gas injected from the gas injection part 113B is guide | induced to the gas passage part 112A on the left side via the straight pipe part 114. Then, the gas is sucked upward by the suction device 13 connected via the suction pipe 12, thereby generating a clockwise gas flow.

  The lower ends of the pair of gas passage portions 112 and 112 are connected by a straight pipe portion 114 having a constant cross-sectional shape, and a cullet suction port opened below the straight pipe portion 114 to suck the cullet. 111 is formed.

  FIG. 5 is a schematic view showing a state in which gas flows in the vicinity of the cullet suction port 111. The straight pipe portion 114 is provided with an air flow that is as close as possible to the laminar flow, and flows in the vicinity of the cullet suction port 111 at a relatively high flow rate, so that a negative pressure is generated in the straight pipe portion 114 near the cullet suction port 111. Occurs. Therefore, since the pressure inside the straight pipe portion 114 is lower than the atmospheric pressure, ambient air outside the vicinity of the cullet suction port 111 is sucked into the straight pipe portion 114. Therefore, the cullet existing in the vicinity of the cullet suction port 111 is guided from the cullet suction port 111 to the inside of the straight pipe portion 114 by the flow of the ambient air, and is guided to the suction device 13 by the air flow generated inside. The

  Further, as shown in FIG. 4, the gas flow direction can be controlled by interlocking the gas injection units 113 </ b> A and 113 </ b> B and the switching valve 115, so that the glass plate 3 that is the target of cullet removal. However, regardless of the direction of movement relative to the main body 11, the cullet can be effectively sucked by switching the gas flow direction.

  For example, in FIG. 4, when the glass plate 3 moves from left to right, the gas flows counterclockwise as shown in FIG. Conversely, when the glass plate 3 moves from right to left, the gas flows clockwise as shown in FIG. By doing in this way, the direction in which gas flows can be switched to the direction in which the cullet can be effectively sucked according to the moving direction, and the cullet can be reliably sucked and removed.

  The cullet suction port 111 has a slit shape having a long axis or a long side in a direction substantially orthogonal to the moving direction of the glass plate 3. Therefore, the suction force by the suction device 13 becomes larger in the vicinity of the central portion of the gas passage portion 112 in a direction substantially orthogonal to the moving direction of the glass plate 3. FIG. 6 is a schematic diagram showing the magnitude of the suction force inside the gas passage portion 112 by the suction device 13. As shown in FIG. 6, the suction force is larger at the central portion of the gas passage portion 112 and is smaller at the end portion.

  Therefore, in the present embodiment, the rectifying member 117 is disposed in the vicinity of the central portion of the gas passage portion 112 in a direction substantially orthogonal to the moving direction of the glass plate 3. FIG. 7 is a schematic diagram illustrating a state in which gas flows in the gas passage portion 112 when the rectifying member 117 is provided. As shown in FIG. 7, by arranging the rectifying member 117 in the vicinity of the central portion of the gas passage portion 112, the airflow in the vicinity of the central portion circulates outward and the suction force in the vicinity of the central portion is reduced. On the other hand, when the sucked air current is pushed outward, the suction force of the end portion of the gas passage portion 112 where the suction force is relatively small increases. Therefore, the suction force inside the gas passage portion 112 can be corrected so as to be uniform in a direction substantially orthogonal to the moving direction of the glass plate 3.

  Moreover, it is preferable to arrange | position the rectification | straightening member 117 below the gas injection part 113, as shown in FIG. Since the gas injection unit 113 also injects the compressed gas in the vicinity of the central portion of the gas passage portion 112 in a direction substantially orthogonal to the moving direction of the glass plate 3, the gas flow rate is higher in the central portion of the gas passage portion 112. The faster the end, the slower the gas flow rate. Due to the existence of such a speed difference, it is difficult to generate a laminar flow in the straight pipe portion 114.

  FIG. 8 is a schematic diagram illustrating a gas flow inside the gas passage portion 112 when the rectifying member 117 is disposed in the vicinity of the center portion. As shown in FIG. 8, by arranging the rectifying member 117 in the vicinity of the central portion of the gas passage portion 112, the airflow in the vicinity of the central portion circulates outward, and the flow velocity of the gas in the vicinity of the central portion is reduced. On the other hand, the flow velocity of the gas at the end portion of the gas passage portion 112 can be accelerated by pushing the air flow outward. Therefore, the flow velocity inside the gas passage portion 112 can be corrected to be uniform in a direction substantially orthogonal to the moving direction of the glass plate 3, and it becomes easy to generate a laminar flow in the straight pipe portion 114. .

  Further, the number of the rectifying members 117 is not limited to being provided in the gas passage portion 112, and a plurality of the rectifying members 117 may be provided. FIG. 9 is a schematic diagram showing the inside of the gas passage portion 112 when a plurality of rectifying members 117 are arranged. As shown in FIG. 9, the rectifying member 117 has the largest rectifying member 117 </ b> A disposed in the vicinity of the central portion of the gas passage portion 112 in a direction substantially orthogonal to the moving direction of the glass plate 3, and reaches the end portion. The size of the rectifying members 117B and 117C is gradually reduced as it goes. This is because the suction force is larger and the gas flow rate is faster near the center, so that the suction force reduction effect and the gas flow rate reduction effect are strengthened, and the suction force is smaller and the gas flow rate is slower toward the end. Therefore, the effect of reducing the suction force and the effect of decelerating the gas flow velocity are weakened.

  Furthermore, in order to generate a homogeneous laminar flow in the straight pipe portion 114, it is preferable to arrange other rectifying members symmetrically about the rectifying member 117A disposed in the vicinity of the central portion. Thereby, it can correct | amend so that gas may flow uniformly in the left-right direction.

  Further, the shape of the rectifying member 117 is not particularly limited. However, in the cullet removing apparatus 1 according to the present embodiment, since the gas flowing direction is switched depending on the moving direction of the glass plate 3, a shape that is vertically symmetric is preferable. FIG. 10 is an exemplary view of a cross-sectional shape on a surface along the gas flow direction of the rectifying member 117.

  As shown in FIG. 10A, the same effect can be expected even if the direction of gas flow is switched, as long as the two conical shapes are bonded together at the bottom. Also, an elliptical sphere shape as shown in FIG. 10B or a teardrop shape may be used.

  As described above, according to the present embodiment, no gas is blown onto the cullet, so that the cullet is not scattered to the surrounding environment, for example, and only the cullet is reliably secured without contacting the brittle material such as the glass plate 3. Can be aspirated. Furthermore, by appropriately selecting the gas injection part 113 and the gas passage part 112, the direction in which the internal gas flows can be switched according to the relative movement direction between the glass plate 3 and the main body part 11, and in which direction Even when moving, the cullet can be effectively sucked.

  In the above-described embodiment, one suction device 13 is provided and switched by the switching valve 115. However, the present invention is not particularly limited to this, and two suction devices 13 are provided to switch the orbit timing. It may be.

  In addition, the brittle material is not limited to a glass plate, and any type of brittle material can be used as long as it forms a scribe line when it is divided and then breaks at a high quality by performing a break treatment. Absent.

  In addition, various modifications and substitutions are possible within the scope of the present invention. For example, even if the gas injection unit 113 is provided only on one side of the gas passage unit 112 without using the switching valve 115, the cullet suction effect can be achieved. FIG. 11 is a cross-sectional view of the cullet removing apparatus 1 according to the embodiment of the present invention when the switching valve 115 is not used, along a plane along the moving direction of the glass plate. As shown in FIG. 11, a partition wall 161 is provided instead of the switching valve 115, and a gas injection unit 113 is provided above the gas passage portion 112 on the side where the gas passage is blocked by the partition wall 161.

  Even in such a configuration, since a laminar flow is generated in the straight pipe portion 114 and a negative pressure is generated in the vicinity of the cullet suction port 111, it goes without saying that the cullet can be effectively sucked.

It is a schematic diagram which shows the structure of the cullet removal apparatus which concerns on embodiment of this invention. It is sectional drawing in the surface along the moving direction of the glass plate of the cullet removal apparatus which concerns on embodiment of this invention. It is a schematic diagram which shows the structure of the gas injection mechanism containing a gas injection part. It is a schematic diagram which shows the relationship between a gas injection part and a switching valve. It is a schematic diagram which shows the state through which the gas of the cullet suction port vicinity flows. It is a schematic diagram which shows the magnitude | size of the suction force inside the gas passage part by a suction device. It is a schematic diagram which shows the state through which the gas inside a gas passage part at the time of arrange | positioning a rectification | straightening member. It is a schematic diagram which shows the flow of the gas inside a gas passage part at the time of arrange | positioning a rectification member in the center part vicinity. It is a schematic diagram which shows the inside of the gas passage part at the time of arrange | positioning multiple rectification | straightening members. It is an illustration figure of the cross-sectional shape in the surface along the flow direction of the gas of a rectification | straightening member. It is sectional drawing in the surface along the moving direction of the glass plate of the cullet removal apparatus which concerns on embodiment of this invention when not using a switching valve.

Explanation of symbols

1 Caret removal device 3 Glass plate (brittle material)
11 Main body 13 Suction device (suction mechanism)
111 cullet suction port 112, 112A, 112B gas passage part 113, 113A, 113B gas injection part (gas injection mechanism)
114 Straight pipe section 115 Switching valve (flow path switching section)
116A Suction opening 117 Rectification member

Claims (9)

In a cullet removing device that sucks and removes cullet generated when scribing or breaking brittle material,
A pair of gas passages for respectively leading up and down airflow;
A gas injection part provided at an upper part of at least one of the gas passage parts, one end opening to the gas passage part, and the other end connected to a gas injection mechanism for injecting gas;
A straight pipe part having a constant cross-sectional shape, connected between the lower ends of the pair of gas passage parts,
A suction opening that opens at an upper end of the pair of gas passages and is connected to a suction mechanism that sucks the gas;
A cullet removing device, wherein a cullet suction port opened below the straight pipe portion is formed.   2. The cullet removing apparatus according to claim 1, wherein the straight pipe portion is disposed so that a central axis thereof is substantially parallel to a surface of a brittle material supported below the cullet suction port. The gas injection part is provided on each upper part of the gas passage part,
One end of the gas injection unit is open to the gas passage unit, and the other end is connected to the gas injection mechanism via an injection selection switching unit that selects gas to be injected from one of the gas injection units. And
A flow path switching unit that switches so that either one of the upper ends of the pair of gas passages is connected to the suction opening;
According to the relative movement direction of the brittle material, the upper end portion of the gas passage portion and the suction opening portion in which the gas is injected from one of the pair of gas injection portions and the other gas injection portion is provided The cullet removing apparatus according to claim 1 or 2, wherein the flow path switching unit is switched so that the two are connected to each other.   Gas is injected from one of the pair of gas injection portions provided on the direction side where the brittle material approaches, and the upper end portion of the gas passage portion and the suction opening are connected on the direction side where the brittle material leaves. The cullet removing apparatus according to claim 3, wherein the flow path switching unit is switched.   The cullet removing device according to any one of claims 1 to 4, wherein a rectifying member that rectifies the flow of the passing gas is disposed below the pair of gas injection units.   6. The cullet removing apparatus according to claim 5, wherein a plurality of the rectifying members are arranged in a direction substantially orthogonal to a relative moving direction of the brittle material.   The cullet removing device according to claim 6, wherein the plurality of rectifying members are arranged so that the size thereof decreases as the distance from the central portion increases.   The cullet removing device according to any one of claims 1 to 7, wherein a cross-sectional area of the pair of gas passage portions gradually decreases toward the lower side. In a cullet removing device that sucks and removes cullet generated when scribing or breaking brittle material,
A pair of gas passage portions for respectively leading up and down airflow;
A gas injection part provided at the upper part of the gas passage part for guiding the descending airflow, one end opened to the gas passage part, and the other end connected to a gas injection mechanism for injecting gas;
A straight pipe part having a constant cross-sectional shape, connected between the lower ends of the pair of gas passage parts,
A suction opening that opens at the upper end of the gas passage that guides the rising airflow and is connected to a suction mechanism that sucks the gas;
Have
A cullet removing device, wherein a cullet suction port opened below the straight pipe portion is formed.

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