JP4693124B2 - Glass tube sorting equipment - Google Patents

Description

  The present invention relates to an apparatus for sorting and sorting a non-defective glass tube and a defective glass tube when a glass base tube that is continuously drawn is cut to a predetermined length at the end of a carriage and dropped downward. Is.

  In general, in a glass tube manufacturing process, a continuously drawn glass main tube is roughly cut into a predetermined length and conveyed to the next process. Before the glass main tube is roughly cut, bubbles, In the case where a defective portion is detected by performing a visual inspection such as an outer diameter inspection, an outer diameter, and a wall thickness, the glass tube including the defective portion is sorted and removed immediately after rough cutting.

  For example, as shown in FIG. 6, the conventional sorting apparatus is provided with a non-defective product conveyer 20 below one side of the sorting position and a defective product discarding unit 21 below the other side. 21, a sorting guide member 24 is provided on the support 22 via a pivot 23 so as to be tiltable to both sides, and the glass tube G roughly cut into a predetermined length from the glass main tube G ′ by the cutting machine 25 is moved to the sorting position. When dropped, the distribution guide member 24 is changed in its inclination direction by an appropriate driving means 26 according to the inspection result of the glass tube G, and in the case of a non-defective product, the defective product is transferred to the non-defective product conveyor 20 side. In this case, the product is sorted by rolling to the defective product disposal unit 21 side.

As another sorting device, as shown in FIG. 7, a non-defective product conveyor 1 for receiving and transporting a falling glass tube G, and a defective product disposal unit 11 installed on the opposite side of the good product conveyor 10 are provided. In addition, between the non-defective product conveyor 10 and the defective product disposal unit 11, the guide surface is connected to the rotation shaft 14 'of the rotation drive source 14 in a state where the guide surface is inclined toward the defective product disposal unit, and the rotation shaft 14' is connected to the rotation shaft 14 '. A guide member 12 that rotates in the in-plane direction of the guide surface is provided at the center, and the guide member 12 has a guide direction of the guide member tube G so that it does not interfere with dropping when the glass tube G is a good product. Is in a position that is substantially parallel to the tube drawing direction of ', and when it is a defective glass tube G, it receives the falling glass tube G and flows it to the defective product disposal unit 11 with respect to the tube drawing direction of the glass main tube G'. Rotate to a position that is almost vertical The direction is changed (Patent Document 1).
JP-A-8-119655

However, the sorting apparatus shown in FIG. 6 tilts the guide member 24 to a predetermined position both when the glass tube is a good product and when it is a defective product, and when the glass tube production speed increases, the sorting process cannot follow. Problems such as contact between the glass tubes at the sorting position or the failure to stably supply the non-defective glass tube to the non-defective conveyance conveyor 20 cause damage to the glass tube or cause confusion in the process. is there.
Further, in the sorting apparatus shown in FIG. 7, the rotation direction of the guide member 12 is preferably a direction opposite to the drawing direction of the glass main tube G ′. However, when sorting and sorting thin tubes with a small outer diameter of the glass tube, the tube pulling speed is very fast and the posture of falling to the sorting device after the cutting process is not stable, so it falls with the front and back tilted. May come. Therefore, when the guide member 12 is rotated from the direction facing the glass tube G in order to sort out the defective glass tubes G, the glass tube G that has fallen in the forward tilted posture or the backward tilted posture has dropped. The guide member 12 cannot receive the side, and the defective glass tube G may be blown off toward the non-defective conveyor 10 side. The defective glass tube blown off toward the non-defective conveyor 10 side may come into contact with the non-defective glass tube on the conveyor, resulting in damage to the non-defective glass tube. In addition, the defective glass tube blown off and the non-defective glass tube on the conveyor may be entangled, resulting in a conveyance trouble. Further, when a defective product is mixed into a non-defective product, it is necessary to discard the mixed peripheral glass tube including the non-defective product or to pass the inspection machine again in order to identify the mixed defective product. As described above, the defective glass tube G is blown off toward the non-defective product conveyer 10 to cause a problem that the yield of the product is deteriorated and the production is not stable.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a glass tube sorting device capable of performing stable and accurate sorting from a low speed range to a high speed range of the glass tube production speed.

The present invention has been made in view of the above-mentioned problems and objects, and the invention according to claim 1 of the present invention is that when a continuously drawn glass tube is cut into a predetermined length and dropped downward. In addition, the apparatus sorts and sorts the non-defective glass tube and the defective glass tube, and receives the non-defective glass tube and conveys the falling glass tube, and a defective product disposal unit installed on the opposite side of the non-defective product conveyor. Between the non-defective product conveyor and the defective product disposal unit, the guide surface is connected to the rotating shaft of the rotation drive source in a state inclined to the non-defective product conveyor, and the guide surface is in the plane of the rotating shaft. A guide member that rotates in a direction, the center of rotation of the guide member being closer to the non-defective conveyance conveyor side than the glass tube dropping position, and receiving a falling glass tube when it is a non-defective glass tube. To flow to the conveyor The guide direction of the guide member is substantially perpendicular to the pulling direction of the glass main tube, and in the case of a defective glass tube, it is substantially parallel to the pulling direction of the glass main tube so as not to interfere with dropping. The glass tube sorting device is characterized in that it rotates to a position and changes its directional position.

The invention according to claim 2 of the present invention sorts and sorts a non-defective glass tube and a defective glass tube when the glass base tube continuously drawn is cut into a predetermined length and dropped downward. A non-defective product conveyer that receives and conveys a falling glass tube, and a defective product disposal unit installed on the opposite side of the non-defective product conveyer, and between the good product conveyer and the defective product disposal unit A rotating shaft connected to the rotation driving source and having an axis parallel to the drawing direction of the glass main tube, and a guide member fixed in the axial direction of the rotating shaft so as to rotate around the axis of the rotating shaft. The rotation axis of the guide member is closer to the non-defective conveyance conveyor side than the glass tube drop position , and the guide member is positioned so that the guide direction of the guide member is vertical so as not to interfere with the drop when the glass tube is non- defective. Yes, defective products The glass tube is characterized in that when the tube is received, the glass tube is dropped and the guide direction of the guide member is rotated to a position inclined toward the defective product disposal section so as to flow to the defective product disposal section, and the direction position is changed. It is a sorting device.

  The guide surface is connected to the rotating shaft in a state inclined to the non-defective conveyor, and has a guide member that rotates in the in-plane direction of the guide surface around the rotating shaft. When the guide member is a non-defective glass tube, The guide direction of the guide member is at a position that is substantially perpendicular to the pulling direction of the glass main tube, and the cut glass tube is rolled onto the guide surface, flows to a non-defective conveyance conveyor, and is conveyed to the next process. When the glass tube is defective, the guide member is rotated to a position substantially parallel to the pulling direction of the glass main tube so as not to interfere with the drop of the glass tube, thereby changing the direction position. In this way, the guide member is only rotated in the in-plane direction of the guide surface according to the non-defective and defective glass tube, so stable and accurate automatic sorting from the low speed range to the high speed range of the glass tube manufacturing speed is possible. It becomes possible. Furthermore, since the rotation center of the guide member is on the non-defective product conveyor side relative to the drop position of the glass tube, there is no possibility that the defective glass tube is blown off to the non-defective product conveyor side.

  In addition, a rotation shaft connected to the rotation drive source and having an axis parallel to the drawing direction of the glass main tube, and a guide member fixed in the axial direction of the rotation shaft so as to rotate around the axis of the rotation shaft. However, the guide member is in a position where the guide direction of the guide member is vertical so that it does not interfere with dropping when it is a non-defective glass tube, and the cut glass tube is dropped onto a non-defective conveyor and conveyed to the next process To do. When the glass tube is defective, the guide member rotates the guide direction to a position inclined toward the defective product disposal unit so as to receive the falling glass tube and flow it to the defective product disposal unit, and change the direction position. . In this way, the guide member is only rotated around an axis parallel to the drawing direction of the glass main tube according to whether the glass tube is good or bad, so it is stable from the low speed range to the high speed range of the glass tube manufacturing speed. Accurate automatic sorting is possible. Further, since the rotating shaft is located on the non-defective product conveyor side with respect to the dropping position of the glass tube, there is no possibility that the defective glass tube is blown off to the non-defective product conveyor side.

  Hereinafter, the glass tube sorting apparatus of the present invention will be described based on each embodiment.

Example 1
1A and 1B are schematic side views of a sorting apparatus according to Embodiment 1 of the present invention.

  1 is a non-defective product conveyor, 2 is a defective product disposal unit, 51 is a guide member, 31 is a rotating shaft, 41 is a rotational drive source, and G is a glass tube.

  The glass tube G is roughly cut into a predetermined length from the glass base tube by a cutting machine provided in front of the sorting device. The cut glass tube G is supplied to the sorting device in the same direction as the drawing direction of the glass original tube and at a speed substantially the same as the drawing speed.

  The non-defective conveyor 1 receives the glass tube G cut by the cutting machine via the guide member 51 and conveys it to the next process. A plurality of endless belts that run in a substantially horizontal direction are connected to the glass main tube. They are arranged in a direction perpendicular to the tube drawing direction.

  The defective product discarding unit 2 is installed on the opposite side of the non-defective product conveyor 1, and for example, a crusher or the like is disposed so that the defective glass tube G is crushed and collected by the cullet conveyor.

  The guide member 51 is for receiving a non-defective glass tube G and flowing it to the non-defective product conveyor 1. The guide member 51 is inclined between the non-defective product conveyor 1 and the defective product disposal unit 2 toward the non-defective product conveyor 1 side. It is installed in. The guide member 51 is connected to the rotation shaft 31 of the rotational drive source 41 such as a servo motor at the lower end side of the guide surface so as to be orthogonal to the guide surface, and rotates in the in-plane direction of the guide surface around the rotation shaft 31. When it is a non-defective glass tube G, it is in a position to receive the falling glass tube and flow it to the non-defective conveyor 1, and when it is a defective glass tube G, it is rotated to a position where it does not interfere with dropping To change.

  An inspection section (not shown) of appearance and dimensions by a laser or the like is provided on the drawing line before the glass main tube is cut, and if a defect is detected in the glass main tube, a failure signal is sent. The rotation drive source 41 is configured to shift.

  The first embodiment has the above configuration, and the operation will be described next.

A glass main tube continuously drawn by a glass tube forming machine is inspected for appearance and dimensions by an inspection unit, and is roughly cut by a cutting machine every predetermined length. When no defect is detected in the glass main tube in the inspection unit, that is, when the roughly cut glass tube G is a non-defective product, the guide member 51 receives the falling glass tube G as shown in FIG. 1 In addition, when a defect is detected in the glass main tube in the inspection unit, a signal for discharging the glass tube G including the defective portion is shifted to the rotation drive source 41, and the guide member 51 is moved by the rotation drive source 41. While maintaining the inclined state, it is rotated in the in-plane direction of the guide surface to change the direction position, and the defective glass tube G is dropped onto the defective product disposal section 2 as shown in FIG.
Regarding the rotation direction of the guide member 51, the stability of the behavior of the glass tube G when the non-defective glass tube G is caused to flow to the non-defective conveyor 1 by the guide member 51, for example, when the glass tube G jumps on the guide member 51. However, in view of the stability for allowing the glass tube G to flow more reliably to the non-defective conveyance conveyor 1, the direction opposite to the pulling direction of the glass main tube is preferable. Thereby, the non-defective glass tube G is received by the guide member 51 more quickly and reliably. After the non-defective glass tube G is discharged, when the glass tube G that subsequently falls is defective, the guide member 51 rotates backward to a position where the glass tube G does not interfere with the rotation by the rotation drive source 41. Change position.

  The sorting device according to the first embodiment is characterized in that the guide surface of the guide member is inclined toward the non-defective product conveyor. As a result, the guide member is rotated to a position substantially parallel to the pulling direction of the glass main tube so as not to interfere with the drop of the defective glass tube, and the direction position is changed. Non-defective glass tubes do not come into contact. Therefore, the defective glass tube does not stay on the guide member, and the defective glass tube does not fall on the non-defective conveyor. In addition, when the connecting part of the guide member and the rotation shaft is on the lower end side of the guide surface, that is, when the rotation center of the guide member is on the non-defective conveyor side of the glass tube dropping position, the non-defective glass tube is inclined greatly. Even if it falls to the sorting device and the rotation of the guide member (rotation in the direction substantially perpendicular to the pulling direction of the glass main tube) is not in time, the non-defective glass tube will be rejected. The product is merely flipped to the side, and no defective product is mixed into the non-defective product.

( Reference example )
2 (a) and 2 (b) are schematic side views of a sorting apparatus according to a reference example of the present invention.

  1 is a non-defective product conveyor, 2 is a defective product disposal unit, 52 is a guide member, 32 is a rotating shaft, 42 is a rotation drive source, and G is a glass tube. In addition, since the non-defective product conveyer 1, the defective product disposal unit 2, and the cutting machine have the same configuration as that of the first embodiment, the description thereof is omitted.

  The guide member 52 is for receiving a non-defective glass tube G and flowing it to the non-defective conveyance conveyor 1. Between the non-defective product conveyer 1 and the defective product disposal unit 2, there is a rotating shaft 32 having an axis parallel to the drawing direction of the glass main tube, and 1 of the guide surface of the guide member 52 substantially perpendicular to the rotating shaft 32. One end face is fixed to the rotating shaft 32. The rotary shaft 32 is fixed to an apparatus frame or the like so as to be rotatable, and is connected to a rotary drive source 42 such as a servo motor at one end, and the rotary shaft 32 is rotated by the driving force of the rotary drive source 42. As a result, the guide member 52 also rotates. The guide member 52 is in a position to receive the glass tube G that falls when it is a non-defective glass tube G and flow it to the non-defective conveyance conveyor 1, and rotates to a position that does not interfere with the drop when it is a defective glass tube G. The position is changed. In addition, the guide member 52 may be comprised from one board | plate material, and the structure which attaches several board | plate materials to the rotating shaft 32 at equal intervals may be sufficient. Further, the fixed position between the rotating shaft and the guide surface may not be the end surface of the guide surface as long as there is no interference with other members.

  An inspection unit for appearance and dimensions by a laser or the like is provided on the drawing line before the glass main tube is cut, and when a defect is detected in the glass main tube, a defect signal is sent to the rotary drive source 42. It is configured to shift.

The reference example has the above configuration, and the operation will be described next.

  A glass main tube continuously drawn by a glass tube forming machine is inspected for appearance and dimensions by an inspection unit, and is roughly cut by a cutting machine every predetermined length. When no defect is detected in the glass main tube in the inspection section, that is, when the glass tube G to be roughly cut is a non-defective product, the guide member 52 receives the falling glass tube G as shown in FIG. 1 flow. In addition, when a defect is detected in the glass main tube in the inspection unit, a signal for discharging the glass tube G including the defective portion is shifted to the rotation drive source 42, and the guide member 2 is centered on the rotation shaft 32. The position where the guide direction does not interfere with the dropping of the defective glass tube G, that is, the direction position is changed so that the guide direction becomes the vertical direction, and the defective glass tube G is shown in FIG. Is dropped into the defective product disposal section 2.

2A and 2B show a case where the lower end of the guide member 52 is fixed to the rotary shaft 32 with respect to the fixing position of the rotary shaft 32 and the guide member 52. In this case, at the time of the non-defective glass tube G, the guide member 52 is in a stationary state inclined at a predetermined angle so as to receive the falling glass tube G and flow it to the non-defective conveyance conveyor 1. Sometimes, from this state, the guide member 52 rotates counterclockwise so that the tip of the guide member 52 is upward and the guide direction is vertical. As a result, the defective glass tube G falls directly onto the defective product disposal section 2 without touching the guide member 52.
In addition, as for the fixing position of the rotating shaft 32 and the guide member 52, the upper end of the guide member 52 may be fixed to the rotating shaft 32 as shown in FIGS. 3 (a) and 3 (b). In this case, at the time of the non-defective glass tube G, the guide member 52 is in a stationary state inclined at a predetermined angle so as to receive the falling glass tube G and flow it to the non-defective conveyance conveyor 1. Sometimes, the guide member 52 rotates clockwise from the inclined state so that the tip of the guide member 52 is downward and the guide direction is vertical.

The sorting apparatus according to the reference example is characterized in that the rotation angle of the guide member is small when switching between a good product and a defective product. This depends on the setting of the tilt angle in the guide direction when flowing a non-defective glass tube on the non-defective conveyor. For example, if the tilt angle in the guide direction for a non-defective product is set to 45 °, the rotation axis is set when a defective product is detected. The rotation angle is 45 °, and the time required for rotation is very short. Thereby, even if the drawing speed of the glass main tube is high, the responsiveness of the guide member is good, and stable and accurate sorting is possible. Regarding the setting of the inclination angle, it is necessary to quickly flow a non-defective glass tube to a non-defective conveyance conveyor as the tube drawing speed is high and the sorting processing speed is high. For this purpose, it is necessary to set a large inclination angle in the guide direction for non-defective products. In the structure of the sorting device of the reference example, the larger the setting of the tilt angle in the guide direction, the smaller the rotation angle of the guide member when switching between the non-defective product and the defective product. Is possible.
In addition, since the time required for the rotation of the guide member for switching between the non-defective product and the defective product is very short, there is no contact with the non-defective glass tube falling during the pivoting operation of the guide member. The guide member is inclined at a predetermined angle and can receive the glass tube in a stationary state, so that stable sorting can be performed.

( Example 2 )
4 (a) and 4 (b) are schematic side views according to the second embodiment of the present invention.

  Reference numeral 1 is a non-defective product conveyor, 2 is a defective product disposal unit, 53 is a guide member, 33 is a rotating shaft, 43 is a rotation drive source, and G is a glass tube. In addition, since the non-defective product conveyer 1, the defective product disposal unit 2, and the cutting machine have the same configuration as that of the first embodiment, the description thereof is omitted.

  The guide member 53 is for flowing the defective glass tube G to the defective product disposal unit 2. Between the non-defective product conveyor 1 and the defective product disposal unit 2, there is a rotating shaft 33 having an axis parallel to the drawing direction of the glass main tube, and 1 of the guide surface of the guide member 53 substantially perpendicular to the rotating shaft 33. One end face is fixed to the rotating shaft 33. The rotating shaft 33 is fixed to an apparatus frame or the like so as to be freely rotatable. One end of the rotating shaft 33 is connected to a rotation driving source 43 such as a servo motor, and the rotating shaft 33 is rotated by a driving force of the rotation driving source 43. Thus, the guide member 53 also rotates. The guide member 53 is in a position where it does not interfere with dropping when it is a non-defective glass tube G. The position is changed. In addition, the guide member 53 may be comprised from one board | plate material, and may be the structure which attaches several board | plate materials to the rotating shaft 33 at equal intervals. Further, the fixed position between the rotating shaft and the guide surface may not be the end surface of the guide surface as long as there is no interference with other members.

  A fixed guide 60 having a guide surface inclined toward the non-defective product conveyor 1 may be used at a location where the non-defective glass tube G falls between the non-defective product conveyor 1 and the defective product disposal unit 2.

  An inspection section for appearance and dimensions by a laser or the like is provided on the drawing line before the glass main tube is cut. When a defect is detected in the glass main tube, a defect signal is sent to the rotation drive source 43. It is configured to shift.

The second embodiment has the above configuration, and the operation will be described next.

  A glass main tube continuously drawn by a glass tube forming machine is inspected for appearance and dimensions by an inspection unit, and is roughly cut by a cutting machine every predetermined length. When no defect is detected in the glass main tube in the inspection section, that is, when the roughly cut glass tube G is a non-defective product, the guide member 53 does not interfere with the dropping of the non-defective glass tube G as shown in FIG. The position, that is, the guide direction faces the vertical direction, and the dropped glass tube G is conveyed to the next process by the non-defective conveyance conveyor 1. In addition, when a defect is detected in the glass main tube in the inspection unit, a signal for discharging the glass tube G including the defective portion is shifted to the rotation drive source 43, and the guide as shown in FIG. The member 53 is rotated about the rotation shaft 33 so that the guide direction is inclined toward the defective product discarding section, and the direction of the member 53 is changed. Then, the guide member 53 receives the defective glass tube G and flows it to the defective product disposal unit 2.

  With respect to the fixing position of the rotating shaft 33 and the guide member 53, FIGS. 4A and 4B show the case where the upper end of the guide member 53 is fixed to the rotating shaft 33. FIG. In this case, when the glass tube G is a non-defective product, the tip of the guide member 53 is downward and the guide direction is vertical, and the non-defective glass tube G is adjacent to the non-defective conveyance conveyor 1 without touching the guide member 53. It drops onto the fixed guide 60 provided. In the case of a defective glass tube G, the guide member 53 rotates counterclockwise from this state so that the guide direction is inclined toward the defective product disposal section 2 side. As a result, the guide member 53 receives the dropped defective glass tube G and flows it to the defective product disposal section 2.

The sorting apparatus according to the second embodiment is characterized in that the rotation angle of the guide member is small when switching between a non-defective product and a defective product. This depends on the setting of the tilt angle in the guide direction when flowing the defective glass tube to the defective product disposal section. For example, if the tilt angle in the guide direction for defective products is set to 45 °, the defective product will be detected. The rotation angle of the rotation shaft is 45 °, and the time required for rotation is very short. Thereby, even if the drawing speed of the glass main tube is high, the responsiveness of the guide member is good, and stable and accurate sorting is possible. Regarding the setting of the inclination angle, it is necessary to quickly flow the defective glass tube to the defective product disposal section as the tube drawing speed is increased and the sorting processing speed is increased. For this purpose, it is necessary to set a large inclination angle in the guide direction for defective products. In the structure of the sorting apparatus according to the second embodiment, the larger the setting of the tilt angle in the guide direction, the smaller the rotation angle of the guide member at the time of switching between the non-defective product and the defective product. It is possible.
In addition, since the time required for the rotation of the guide member for switching between the non-defective product and the defective product is very short, there is no contact with the non-defective glass tube falling during the pivoting operation of the guide member. The guide member can receive the glass tube in a state of being inclined and inclined at a predetermined angle.
In addition, when the connecting part between the guide member and the rotating shaft is on the upper end side of the guide surface, that is, the rotating shaft is closer to the non-defective conveyor side than the dropping position of the glass tube, the glass tube falls to the sorting device in a largely inclined posture. Even when the rotation of the guide member in the vertical direction is not in time, the non-defective glass tube is merely blown off to the defective product disposal side. Therefore, it works on the safe side without damaging the non-defective glass tube on the non-defective conveyance conveyor, mixing in the defective glass tube, or causing trouble on the conveyer, and it is beneficial for quality assurance and stabilization of production. There is.

  According to the sorting apparatus of the present invention, since the guide member is only rotated according to whether the glass tube is good or bad, it is possible to perform stable and accurate automatic sorting from the low speed range to the high speed range of the glass tube. The sorting operation can be performed well without causing damage to the tube and without causing confusion in the process.

It is a schematic side view of the sorting device concerning Example 1 of the present invention. It is a schematic side view of the selection apparatus concerning the reference example of this invention. It is a schematic side view of another form of the sorting device concerning the reference example of this invention. It is a schematic side view of the sorting device concerning Example 2 of the present invention. It is a schematic side view of another form of the sorting device concerning the reference example of this invention. It is a schematic side view of the conventional sorting device. It is a schematic side view of the conventional sorting device.

  DESCRIPTION OF SYMBOLS 1,10,20 ... Non-defective conveyance conveyor, 2,11,21 ... Defective product disposal part, 12, 24, 51, 52, 53 ... Guide member, 14, 41, 42, 43 ... Rotation drive source, 22 ... Support , 23 ... pivot axis, 25 ... cutting machine, 26 ... driving means, 31, 32, 33 ... rotating shaft, 60 ... fixed guide, 100, 200, 300 ... sorting device, G ... glass tube, G '... glass main tube.

Claims (2)

This is a device that sorts and sorts non-defective and non-defective glass tubes when a glass base tube that is continuously drawn is cut to a predetermined length and dropped downwards. It has a non-defective product conveyor to be transported and a defective product disposal unit installed on the opposite side of the good product conveyor, and the guide surface is inclined to the good product conveyor side between the good product conveyor and the defective product disposal unit. And a guide member that is connected to the rotation shaft of the rotation drive source and rotates in the in-plane direction of the guide surface about the rotation shaft, and the rotation center of the guide member is from the drop position of the glass tube. Is located on the non- defective conveyor side, and when the glass tube is non- defective, the guide direction of the guide member is substantially perpendicular to the pulling direction of the glass main tube so that the falling glass tube is received and flowed to the non-defective conveyor. Yes, no Sorting apparatus of the glass tube, characterized in that changing the direction position by rotating the tube drawing direction and substantially parallel position of the glass source tube so as not to interfere the fall when the glass tube goods. This is a device that sorts and sorts non-defective and non-defective glass tubes when a glass base tube that is continuously drawn is cut to a predetermined length and dropped downwards. It has a non-defective product conveyor to be transported and a defective product disposal section installed on the opposite side of the non-defective product conveyor. A rotating shaft having an axis parallel to the pulling direction, and a guide member fixed in the axial direction of the rotating shaft so as to rotate about the axis of the rotating shaft, and the rotating shaft is made of glass. Glass that is closer to the good conveyor than the drop position of the tube, and the guide member is in the vertical direction so that it does not interfere with the drop when the glass tube is good, and the glass that falls when the glass tube is defective Receive the tube Sorting apparatus of the glass tube, characterized in that changing the direction position by rotating the position inclined guide direction of the guide member to the defective discard portion to flow to the defective product discarding unit taking.