WO2014002666A1

WO2014002666A1 - Cleaning device for glass tube and cleaning and cutting device

Info

Publication number: WO2014002666A1
Application number: PCT/JP2013/064666
Authority: WO
Inventors: 健一干場; 正広市川; 長谷川　徹
Original assignee: 日本電気硝子株式会社
Priority date: 2012-06-27
Filing date: 2013-05-27
Publication date: 2014-01-03
Also published as: WO2014002666A8; JP2014009105A

Abstract

[Problem] To provide a cleaning device for glass tubes, which has a simple structure and can clean the inside of glass tubes directly after cutting of the same without requiring a dedicated source of power, and a cleaning and cutting device. [Solution] This cleaning device for glass tubes cleans the inside of glass tubes (G1), which have a prescribed length and are transported in a parallel state in a direction orthogonal to the tube axes by a conveyor (400). The cleaning device for glass tubes is provided with: a separating means (31) that separates each glass tube (G1), one tube at a time, at a prescribed interval in the transport direction; a blowing means (32) that blows cleaning air toward an opening part on one end side of each glass tube (G1) that has been separated by the separating means (31); and an impact means (33) that taps and imparts an impact to the outer peripheral surface of the glass tube (G1) into which cleaning air (A2) is blown by the blowing means (32). The impact means (33) is constituted from an elastic member (331), the base end of which is affixed to a device frame (Fr), and a tapping member (332) provided on the tip end side of the elastic member (331). This cleaning device is provided in a cleaning and cutting device for glass tubes at a location which is directly after a continuous glass tube is cut into prescribed lengths.

Description

Glass tube cleaning device and cleaning cutting device

The present invention relates to a cleaning device for cleaning the inside of a glass tube cut into a predetermined length immediately after the cutting, and a glass tube cleaning and cutting device equipped with the cleaning device.

For example, glass tubes used for fluorescent lamps, medical containers such as ampoules and vials, backlights for liquid crystal panels and the like are generally produced mainly by the Danner method (see Patent Document 1 below).

That is, as shown in FIG. 10, in the muffle furnace 100, the molten glass M flowing down from the trough 110 is wound around the outer peripheral surface of the continuously rotating sleeve 120 to form a cylindrical shape, and is separated from the tip of the sleeve 120. The continuous glass tube G0 is drawn by continuously drawing the molten glass M by the tube drawing machine 200 provided outside the muffle furnace 100 while blowing the blow air A1 into the cylinder. While the continuous glass tube G0 is continuously running, the cutting device 300 cuts the glass glass G1 by a predetermined length to obtain a plurality of glass tubes G1. And while conveying the obtained glass tube G1 with the conveyor 400, the glass tube used as a product is produced by recutting both ends of the glass tube G1 and carrying out a mouth burning process.

The thing of the following patent document 2 is known as an example of the cutting device 300 of the continuous glass tube G0 used in the production process of the glass tube mentioned above. Such a cutting device cuts the continuous glass tube G0 to a predetermined length by intermittently bringing a cutting blade into contact with the outer peripheral surface of the continuous glass tube G0 to form a scratch and applying a thermal shock. However, in the conventional cutting device, as shown in FIG. 11, the glass fine powder P generated at the time of cutting is blown from the rear end opening B1 of the glass tube G1 by the blow air A1 ejected from the front end opening F0 of the continuous glass tube G0. It will be blown into the tube. For this reason, the glass fine powder P adheres to the inner peripheral surface of the glass tube G1, and the cleanliness of the glass tube G1 is impaired.

Therefore, an attached matter removing apparatus for removing the fine glass powder P attached to the inner peripheral surface of the glass tube G1 is disclosed in Patent Document 3 below. Such a deposit removing device is configured such that glass fine powder P released from the inner peripheral surface by ultrasonically vibrating the glass tube G1 itself is opened at the other end by injecting air into the tube from one end opening of the glass tube G1. It is discharged outside the pipe through the section. Such dry cleaning is more effective as the inside of the glass tube G1 is in a dry state. In the above-described production process, the internal humidity of the glass tube G1 increases before and after these steps due to the influence of the combustion gas used during recutting and calcination, so the glass tube G1 immediately after cutting by the cutting device 300. It is desirable to perform in-pipe cleaning.

However, the conventional deposit removing device has a limited installation place because a dedicated power source (power supply) is required separately and a sufficient installation space must be secured below the conveyor 400. In some cases, it may not be installed at a desired location in the existing equipment (for example, the location immediately after cutting by the cutting device 300 in the above production process). Further, when such a deposit removing device is used in a place immediately after cutting by the cutting device 300, the temperature of each glass tube G1 immediately after cutting is as high as 250 to 300 ° C., so that the precision machine is placed under a severe temperature environment. Forced to operate continuously.

Japanese Unexamined Patent Publication No. 7-172852 JP 2007-331994 A Japanese Patent Laid-Open No. 7-100449

The present invention has been made in view of such circumstances, and provides a glass tube cleaning device and a cleaning cutting device with a simple configuration that can clean the inside of a glass tube immediately after cutting without requiring a dedicated power source. Doing this is a technical issue.

The present invention is a glass tube cleaning device for cleaning the inside of a glass tube of a predetermined length that is conveyed in a state orthogonal to the tube axis by a conveyor,
Partition means comprising a plurality of projecting members provided on the endless transport member at regular intervals along a circular path of the endless transport member of the conveyor, and partitioning each glass tube one by one at a predetermined interval in the transport direction; A blow means for blowing clean air into an opening on one end side of each glass tube partitioned by the partition means, and an impact by striking the outer peripheral surface of the glass tube blown with clean air by the blow means A striking means for giving
The striking means is provided on the distal end side of the elastic member, the elastic member having a base end fixed to the apparatus frame and being deformed by being pressed by the one glass tube by the movement of the endless conveying member, A tapping member that taps the one glass tube and another glass tube adjacent on the upstream side of the conveyance by the elastic force of the elastic member that is elastically deformed when the pressure is released. To do.

The present invention is characterized in that a plurality of the hitting means are provided at a predetermined interval in a direction orthogonal to the tube axis of the glass tube.

The present invention is characterized in that the striking means is provided at a position closer to the other end side of the glass tube toward the downstream side of conveyance of the glass tube.

The present invention is characterized in that the hitting member is made of a heat resistant resin.

The present invention is characterized in that the protruding member is made of a heat resistant resin.

According to the present invention, the endless conveying member of the conveyor is provided with a pressing means for pressing and deforming the elastic member of the striking means instead of the one glass tube by the movement of the endless conveying member. Features.

In addition, the glass tube cleaning and cutting apparatus according to the present invention intermittently contacts the first cutting blade with the outer peripheral surface of a continuous glass tube that is continuously drawn and blown while blown air is blown into the continuous cutting tube. Obtained in the first cutting part, the first cutting part to form a plurality of glass tubes by forming a scratch on the outer peripheral surface of the glass tube and applying thermal shock to cut the continuous glass tube by a predetermined length While the glass tube is conveyed by a conveyor in a direction perpendicular to the tube axis, the second cutting blade forms a scratch on the outer peripheral surface of one end side and the other end side of the glass tube, and thermal shock A second cutting part that cuts one end side and the other end side of the glass tube, and a conveyance path of the glass tube, the first cutting part and the second cutting part Clean the glass tube placed between Characterized in that it comprises a location, a.

According to the glass tube cleaning apparatus of the present invention, the striking means for impacting the outer peripheral surface of the glass tube includes an elastic member whose base end is fixed to the device frame, and a tapping member provided on the distal end side of the elastic member. The device configuration is extremely simple. Further, since the striking means is continuously operated by the power of the conveyor drive source, it is not necessary to provide a power source dedicated to the striking means. Furthermore, since each glass tube moving in a parallel state functions as a trigger for operating the hitting means, it is not necessary to separately provide a control means for controlling the operation. Therefore, it can be installed at low cost, and at the same time is suitable for installation in existing facilities.

Further, if a plurality of hitting means are provided at a predetermined interval in a direction orthogonal to the tube axis of the glass tube, the glass tube can be impacted a plurality of times while the glass tube moves a certain distance. Thereby, the glass fine powder can be more reliably released from the inner peripheral surface of the glass tube and removed from the tube while suppressing the magnitude of impact per one time.

Furthermore, if each striking means is provided at a position closer to the other end side of the glass tube toward the conveyance downstream side of the glass tube, the glass fine powder can be blown sequentially from the central side to the rear end side of the glass tube. it can. Thereby, for example, when the glass fine powder has been blown into the tube near the center of the considerably long glass tube by blow air, or when the inner diameter of the glass tube is small and it is difficult to ensure sufficient pressure of clean air in the tube. Moreover, the glass fine powder can be reliably removed from the inside of the glass tube.

In addition, since the projecting member and the hitting member are made of a heat-resistant resin, melting or deformation due to contact with the glass tube does not occur even when the temperature of the glass tube is high. Therefore, it can be used without damaging or scratching the outer peripheral surface of the glass tube. For example, the glass tube is installed in a place of severe temperature environment such as immediately after each glass tube is cut to a predetermined length from the continuous glass tube. It is possible.

Further, even if the endless conveying member of the conveyor is provided with pressing means for pressing and deforming the elastic member of the striking means instead of the one glass tube by the movement of the endless conveying member, the respective effects described above are similarly obtained. be able to. In addition, since the pressing means is directly involved in the operation of the striking means in place of the glass tube, even if the glass tube is being transported in the state of missing teeth, etc. Operation is not hindered and an impact can be applied to all glass tubes.

Further, according to the glass tube cleaning and cutting apparatus of the present invention, the glass tube transport path is provided between the first cutting portion and the second cutting portion in which the glass tube is in a high temperature state. Since the glass tube cleaning device is provided, the inside of the glass tube can be cleaned immediately after cutting. As a result, it becomes possible to perform more effective dry cleaning before the humidity inside the glass tube increases due to the influence of the combustion gas used when recutting both ends of the glass tube in the second cutting part. The tube can be cut to a desired length while maintaining cleanliness within the tube.

It is a schematic plan view of the cleaning apparatus and the cleaning cutting apparatus of the glass tube of this embodiment. It is a top view of the 1st cutting part in the cleaning cutting apparatus of the glass tube of this embodiment. It is a perspective view of the fusible means in the cleaning device of the glass tube of this embodiment. It is a sectional side view of the hit | damage means in the cleaning apparatus of the glass tube of this embodiment. It is a schematic sectional drawing which shows operation | movement of the hit | damage means in the cleaning apparatus of the glass tube of this embodiment. It is sectional drawing of the radial direction which shows a mode when an impact is given to the glass tube by the glass tube cleaning apparatus of this embodiment. It is sectional drawing of a tube-axis direction which shows a mode when an impact is given to the glass tube by the glass tube cleaning apparatus of this embodiment. It is a schematic sectional drawing which shows the cleaning apparatus of the glass tube which concerns on other embodiment. It is a schematic plan view of the clean cutting apparatus of the glass tube which concerns on other embodiment. It is a schematic side view which shows the production process of the conventional glass tube. It is principal part sectional drawing which shows a mode that glass fine powder adheres to the inner surface of a glass tube in the manufacturing process of the conventional glass tube.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, the glass tube cleaning device and the cleaning cutting device described below can be applied to the cutting and cleaning processing of continuous glass tubes that are drawn while blown air is blown by the Danner method. The present invention can also be applied to a cutting / cleaning process of a continuous glass tube that is drawn while blown air is blown by a draw method or the like.

As shown in FIG. 1, the glass tube cleaning and cutting device 10 of the present embodiment is a first cutting unit 1 that cuts a continuous glass tube G0 that is continuously drawn and blown while blowing air A1 by a predetermined length. A second cutting section 2 that cuts one end side and the other end side of the glass tube G1 cut by the first cutting section 1, and a glass tube that cleans the inside of the glass tube G1. The cleaning device 3 is provided.

As shown in FIG. 2, the first cutting unit 1 includes a vertical rotating shaft 12 that is driven by a motor 11 via a bevel gear (not shown), and is provided on the rotating shaft 12 and continuously rotates in a substantially horizontal plane. An arm 15 that moves up and down by a shaft 14 in response to the cam 13 and a first cutting blade 16 that is fixed to the lower end of the arm 15 and is supplied with an appropriate amount of moisture through a supply path (not shown). Has been. The first cutting unit 1 is disposed on the downstream side of the continuous glass tube G0 with respect to the known tube drawing machine 200 that pulls the continuous glass tube G0, and the continuous glass tube G0 that continuously travels as follows. Are cut by a predetermined length.

That is, the arm 15 of the first cutting section 1 is continuously rotated in synchronization with the traveling of the continuous glass tube G0 that continuously travels in the horizontal direction, and the first cutting blade 16 is intermittently placed on the upper part of the outer peripheral surface of the continuous glass tube G0. By making contact with each other, a scratch is formed at the upper part of the outer peripheral surface of the continuous glass tube G0 and at the same time a thermal shock is applied, and this thermal shock generates a crack with the scratch as an origin on the outer peripheral surface of the continuous glass tube G0. The continuous glass tube G0 is cut by a predetermined length by applying a bending moment due to its own weight.

Each glass tube G1 cut | disconnected by predetermined length in the 1st cutting part 1 is conveyed in the orthogonal state with respect to a tube axis by the conveyor 400 in the parallel state. The conveyor 400 according to the present embodiment includes an endless conveying member 410 formed of a pair of endless roller chains that are wound around a sprocket (not shown) and are parallel to each other. The conveyor 400 circulates the endless transport member 410 in a circular orbit via a sprocket by a drive source (not shown), and is supported on each of the roller chains constituting the endless transport member 410. The glass tube G1 is conveyed to the next process.

As shown in FIG. 1, the second cutting unit 2 includes

second cutting blades

21 a and 21 b made of disk-shaped cutters that continuously rotate around a horizontal axis by a drive source (not shown), and these

second cutting blades

21a, 21b is comprised so that the lower part may be cooled by being immersed in the cooling water stored in the water tank not shown provided below these. In the 2nd cutting part 2 of this embodiment, the

2nd cutting blade

21a, 21b of each glass tube G1 in the conveyance path | route of the conveyor 400 which conveys each glass tube G1 obtained in the 1st cutting part 1, respectively. Relative in the conveyance direction of the glass tube G1 on the downstream side of the conveyance (hereinafter, simply referred to as “conveyance downstream side”) in the vicinity of the planned cutting site on one end side and the other end side of the glass tube G1. They are arranged in different positions.

The second cutting unit 2 includes

second cutting blades

21a and 21b cooled on the outer peripheral surface of the glass tube G1 that has been preheated in the vicinity of the cutting scheduled part during conveyance by a preheating means (for example, a burner) (not shown). By contacting, a scratch is formed on the outer peripheral surface of the glass tube G1, and a thermal shock is applied to cut the end of the glass tube G1. A mechanism for rotating the glass tube G1 being transported around the tube axis (for example, a roller or the like for contacting the glass tube G1 being transported) is provided in the transport path of the endless transport member 410 or the conveyor 400 in the vicinity thereof. Also good. Thereby, pre-heat treatment and scratch formation can be performed over substantially the entire circumference of the outer peripheral surface of the glass tube G1, and the end of the glass tube G1 can be cut at right angles to the tube axis.

The glass tube cleaning device 3 is partitioned by the partition unit 31 and the partition unit 31 that partitions each glass tube G1 suspended and supported by the endless transport member 410 of the conveyor 400 one by one at a predetermined interval in the transport direction. The blower means 32 that blows clean air A2 into the opening (tip opening part F1) on one end side of each glass tube G1, and the outer peripheral surface of the glass tube G1 into which clean air A2 is blown by this blower means 32 is struck. Striking means 33 for giving an impact. The glass tube cleaning device 3 of the present embodiment is a conveyance path of the glass tube G1 and is disposed between the first cutting unit 1 and the second cutting unit 2. In more detail, it is provided in the place immediately after the cutting | disconnection of the glass tube G1 by the 1st cutting part 1. FIG.

As shown in FIG. 1, the partition means 31 of the glass tube cleaning device 3 includes a plurality of protruding members 311 provided on an endless conveying member 410 of the conveyor 400. Each protrusion member 311 is provided at a constant interval along the circumferential track of the endless transport member 410, and moves along the circular track with the endless transport member 410 being kept at a constant interval. In the present embodiment, a plurality of projecting members 311 are provided at the same interval on each of a pair of parallel roller chains, and the projecting members 311 are positioned relative to each other in the normal direction of each virtual plane including their orbits. Are configured to move in a synchronized manner in a state in which they are matched. The partition means 31 may be provided with a plurality of protruding members 311 provided at regular intervals on another endless roller chain or the like that can circulate in synchronization with the endless transport member 410.

In the partition means 31 of this embodiment, as shown in FIG. 5, each protrusion member 311 is formed in the shape of a truncated cone protruding upward from the conveying surface S of the glass tube G1 in the conveyor 400, and its height is It is designed to be higher than the outer diameter of the glass tube G1. Further, the adjacent projecting members 311 are juxtaposed at a distance slightly larger than the outer diameter of the glass tube G1. For this reason, the partition means 31 of this embodiment regulates the direction of the tube axis of the glass tube G1 and aligns the glass tubes G1 in a parallel state, and in a direction orthogonal to the tube axis of the glass tube G1. There is an advantage that it can also be used as a restricting means for restricting the relative movement between the glass tube G1 and the endless conveying member 410 within the interval.

Furthermore, the partition means 31 of the present embodiment employs a heat resistant resin as a raw material for these protruding members 311. As the heat resistant resin, one having a heat resistant temperature higher than 250 to 300 ° C. corresponding to the temperature of each glass tube G1 immediately after cutting by the first cutting section 1 is used. At the same time, it is desirable to use one having excellent wear resistance. Specific examples of such heat-resistant resins include polybenzimidazole (PBI) resins. By using the protruding member 311 made of such a material, it is possible to prevent a portion of the protruding member 311 from melting and adhering to the outer peripheral surface of the glass tube G1 when contacting with the high temperature glass tube G1, and each protruding member. Subsequent deformation (for example, plastic deformation due to heat or deformation due to wear) can be suppressed, and unnecessary scratches resulting from this can be prevented from being formed on the outer peripheral surface of the glass tube G1.

As shown in FIG. 1, the fusible means 32 of the glass tube cleaning device 3 has a predetermined length along the conveying path of the conveyor 400, and is supported by the endless conveying member 410 so as to be conveyed and moved. Clean air A2 is blown into the opening (tip opening F1) on one end side of the tube G1 for a predetermined time. The blowing means 32 of the present embodiment is provided on the downstream side of conveyance immediately after the cutting of the glass tube G1 by the first cutting unit 1 and on the tip side of the glass tube G1.

As shown in FIG. 3, the squirting means 32 of the present embodiment includes a squirting nozzle 322 having a flat nozzle port 321 along the conveying path of the glass tube G1, and is supplied from a supply source (not shown). Dry air is sprayed from the nozzle port 321 as horizontally long strip-like clean air A2. By making the clean air A2 ejected from the nozzle port 321 into a horizontally long strip shape along the transport path, the end opening of each glass tube G1 is opened while each glass tube G1 is transported by a certain distance by the movement of the endless transport member 410. Clean air A2 can be reliably blown into the part F1.

In the present embodiment, when the blow means 33 described later gives an impact to the outer peripheral surface of the glass tube G 1, the blow air means 32 causes the clean air A 2 blown into the tip opening F 1 of the glass tube G 1 to be at least by the blow means 33. Clean air A2 is blown so as to reach the other end opening to be struck. Specifically, the jet pressure, the jetting time, the jetting timing, etc., of the clean air A2 by the jetting means 32 are set according to the length and inner diameter of the glass tube G1, the transfer movement speed of the glass tube G1, and the protruding members 311 in the endless transfer member 410. It adjusts suitably according to the magnitude | size of the space | interval. Moreover, in this embodiment, although the clean air A2 injected by the blowing means 32 is continuously blown into the tube of the glass tube G1, it may be blown intermittently.

As shown in FIG. 4, the hitting means 33 of the glass tube cleaning device 3 includes an elastic member 331 having a base end fixed to the device frame Fr, a hitting member 332 provided on the distal end side of the elastic member 331, It is composed of As shown in FIG. 1, the striking means 33 of the present embodiment is provided at a predetermined position in the range through which the glass tube G 1 passes, while the front end opening F 1 of the glass tube G 1 is opposed to the blowing means 32. It has been.

As shown in FIG. 5B, the elastic member 331 of the striking means 33 is pressed and deformed by one glass tube G 1 that is transported and moved in a direction orthogonal to the tube axis by the movement of the endless transport member 410. That is, the elastic member 331 of the present embodiment is applied with a load via the protruding member 311, the glass tube G 1, and the tapping member 332 by the power of a driving source (not shown) that moves the endless transport member 410 in the circular path. Deformed. In the present embodiment, a coil spring is used as the elastic member 331, but a leaf spring or the like may be used.

As shown in FIG. 5 (c), the striking member 332 of the striking means 33 is pressed in the transport direction while being in contact with its outer peripheral surface by one glass tube G1 during transport movement by the endless transport member 410, When the pressure from one glass tube G1 is released, one glass tube G1 and another glass tube G1 adjacent on the upstream side of the glass tube G1 are struck by the elastic force of the elastic member 331 that is elastically deformed. The tapping member 332 of the present embodiment has a shape such as a columnar body such as a polygonal column or a cylinder, a cone-shaped body in which a tapered portion is formed on the columnar body, or a cylindrical body in which a hollow portion having a predetermined shape is provided. In order to avoid partial concentration of impact on the glass tube G1, the wide flat surface portion is configured to strike a range of a predetermined length in the tube axis direction of the glass tube G1.

Further, the tapping member 332 of the present embodiment employs a heat resistant resin (for example, polybenzimidazole resin) as a raw material. The tapping member 332 is in contact with the high-temperature glass tube G1 in the same manner as the projection member 311 of the partitioning means 31 described above, and therefore uses a tapping member 332 that is softer than the glass tube G1 and excellent in heat resistance and wear resistance. As a result, the adhesion of dirt to the outer peripheral surface of the glass tube G1 is prevented, and the formation of unnecessary scratches due to subsequent deformation is avoided.

Further, as shown in FIG. 1, a plurality of striking means 33 according to the present embodiment are provided at predetermined intervals in the direction orthogonal to the tube axis of the glass tube G1, and clean air A2 is introduced into the tube of the glass tube G1. While being blown, the outer peripheral surface of the glass tube G1 that moves to the downstream side of the conveyance is sequentially beaten, and an impact is given to the glass tube G1 a plurality of times. In the present embodiment, the tip opening F1 of the glass tube G1 is blown at five locations at intervals equal to the interval between the adjacent protruding members 311 during a certain distance in which the tip opening F1 is transported and moved while facing the air blowing means 32. Means 33 are provided.

In addition, it is possible to change the design as appropriate as to whether the hitting means 33 are provided at regular intervals or at irregular intervals. When each striking means 33 is provided at equal intervals, each glass tube G1 moving at a constant speed is struck at substantially the same timing. Therefore, the portion struck by each tapping member 332 is the glass tube G1. It becomes substantially the same in the circumferential direction of the outer peripheral surface. On the other hand, when the hitting means 33 are provided at unequal intervals, the glass tubes G1 moving at a constant speed are hit at different timings, and the hitting members 332 are circumferential in the circumferential direction of the glass tube G1. Strike a slightly different part in each.

Furthermore, in this embodiment, these striking means 33 are provided at a position closer to the other end side (rear end side) of the glass tube G1 toward the downstream side of the conveyance of the glass tube G1. Therefore, each striking means 33 gives an impact to the outer peripheral surface near the center as the position of the glass tube G1 is on the upstream side of the conveyance, and gradually increases the portion of the glass tube G1 that gives an impact as the glass tube G1 moves to the downstream side of the conveyance. It is configured to vary toward the rear end side of the tube G1. Further, each striking member 33 is provided in a range between a pair of roller chains constituting the endless conveying member 410. Thereby, it is possible to prevent the parallel state of the glass tubes G1 being conveyed from being disturbed by an impact from the striking means 33, and to avoid a decrease in the wind pressure of the clean air A2 blown into the tubes of the glass tubes G1.

Hereinafter, a method of cleaning the inside of the glass tube G1 cut into a predetermined length by the glass tube cleaning device 3 will be described along with the operation of the glass tube cleaning device 3 of the present embodiment with reference to the drawings.

As shown in FIG. 1, the glass tube cleaning and cutting apparatus 10 of the present embodiment cuts a continuous glass tube G0 that is continuously run by being pulled by a known pipe drawing machine 200 by a predetermined length at the first cutting unit 1. To do. The plurality of glass tubes G1 thus obtained are suspended and supported by the endless conveying member 410 while being partitioned one by one by the partitioning means 31, and are transported in parallel by the conveyor 400 in a direction orthogonal to the tube axis.

By the way, since the continuous glass tube G0 is formed by drawing while blowing air A1 is blown (see FIG. 10), the glass fine powder P generated at the time of cutting by the first cutting unit 1 is the tip opening of the continuous glass tube G0. The blow air A1 ejected from the portion F0 is blown into the tube from the rear end opening B1 of the glass tube G1 (see FIG. 11). For this reason, as for each glass tube G1 immediately after the cutting | disconnection by the 1st cutting part 1, the cleanliness in the tube | pipe in the rear end side is impaired by adhesion in the tube | pipe of the glass fine powder P. FIG.

The glass tube cleaning and cutting device 10 of the present embodiment is a conveyance path of each glass tube G1, and the glass tube cleaning device 3 is provided at a location immediately after the cutting of the glass tube G1 by the first cutting unit 1. The glass tube cleaning device 3 allows each glass tube G1 to be transported to the next step (step of recutting the end of the glass tube G1 by the second cutting unit 2) immediately after the cutting. In-tube cleaning of the glass tube G1 is performed.

The glass tube cleaning device 3 of the present embodiment blows clean air A2 into the tube from the front end opening F1 of the glass tube G1 and gives an impact to the outer peripheral surface of the glass tube G1, thereby applying to the inner peripheral surface of the glass tube G1. The adhering glass fine powder P is removed from the inside of the tube. This will be described in detail below.

As shown in FIG. 1, the glass tube G 1 is conveyed in a parallel state by the conveyor 400 after being cut by the first cutting unit 1, and the tip opening F 1 is the jetting means 32 (specifically, the nozzle port 321 of the jetting nozzle 322). Move to the position opposite to. At this time, the clean air A2 is blown into the front end opening F1 of the glass tube G1 by the blowing means 32. In the present embodiment, the blowing of the clean air A2 into the tip opening F1 is started from when the glass tube G1 is on the upstream side of conveyance with respect to the striking means 33. In addition, since the nozzle unit 321 of the nozzle unit 322 has a flat shape along the conveyance path of the glass tube G1, each glass tube G1 continuously or intermittently supplies clean air A2 into the tube. Move a certain distance while being blown.

One glass tube G1 in which clean air A2 is blown into the tube by the blowing means 32 is struck by the striking means 33 disposed in the transportation path during the transportation by the conveyor 400, as shown in FIG. It contacts the member 332. The endless conveying member 410 of the conveyor 400 continues to move around as it is, and the one glass tube G1 presses the tapping member 332 in the same direction while being pressed in the conveying direction by the protruding member 311 that moves together with the endless conveying member 410. Therefore, in this embodiment, a load is applied to the striking member 332 of the striking means 33 through the endless conveying member 410, the protruding member 311 and the one glass tube G1 by the power of the driving source of the conveyor 400.

When the endless conveying member 410 moves further to the conveying downstream side while the one glass tube G1 and the tapping member 332 are in contact with each other, the tapping member 332 of the striking means 33 becomes one as shown in FIG. It is further pressed by the glass tube G1 and displaced downstream in the conveyance. Further, since the base end of the elastic member 331 that is integrally connected to the tapping member 332 is fixed to the device frame Fr, the elastic member 331 is deformed by a load applied to the tapping member 332. At this time, the tapping member 332 displaced from the original position to the conveyance downstream side is in a state where potential energy (elastic energy) due to the elastic force of the deformed elastic member 331 is stored.

When the endless conveying member 410 continues to move downstream in the conveying direction, the pressure from the one glass tube G1 on the striking means 33 (directly the tapping member 332) is released. Then, as shown in FIG. 5 (C), the elastic member 331 released from the pressing and the load is removed is elastically deformed to return to the original shape, and the tapping member 332 is elastically deformed. Displacement to the upstream side of the transport attempts to return to the original position by the elastic force. Also at this time, since the endless conveying member 410 continues the circular movement, the outer peripheral surface of the one glass tube G1 that pressed the striking means 33 and the other glass tube G1 adjacent on the upstream side of the conveying is the original. It is struck by a tapping member 332 that attempts to return to the position.

When the outer peripheral surface of the glass tube G1 is struck by the tapping member 332 of the hitting means 33, the glass powder P adhering to the inner peripheral surface is instantaneously caused by the impact as shown in FIG. It is released from the inner peripheral surface. In the present embodiment, the relative movement in the transport direction of each glass tube G1 being transported with respect to the endless transport member 410 is regulated within a certain range by the respective projecting members 311 of the partitioning means 31, and therefore the glass tube by the striking means 33 The impact on G1 does not escape more than necessary, and the glass fine powder P can be reliably released from the inner peripheral surface of the glass tube G1.

When the glass tube G1 receives an impact from the striking means 33, the clean air A2 from the blowing means 32 is blown into the tube of the glass tube G1 from the front end opening F1 toward the rear end opening B1 as described above. Is in a state of being. Accordingly, as shown in FIG. 7, the glass fine powder P released from the inner peripheral surface of the glass tube G1 is blown off to the outside by the clean air A2 through the rear end opening B1 of the glass tube G1, and from the inside of the glass tube G1. The glass fine powder P is removed. Thus, the inside of the glass tube G1 whose cleanliness is impaired by the adhesion of the glass fine powder P is dry-cleaned.

The glass tube G1 continues to move further to the downstream side of conveyance while still in contact with the striking member 332 of the striking means 33. Therefore, immediately after that, the glass tube G1 that has received an impact from the striking means 33 changes its position to the side where the striking member 332 of the striking means 33 is pressed and the elastic member 331 is deformed. In this embodiment, each glass tube G1 is sequentially conveyed in a parallel state by the conveyor 400, so that the operation of the hitting means 33 described above (FIGS. 5A to 5C) is performed by two glasses adjacent in the conveying direction. Repeatedly between tubes G1.

In the present embodiment, even if a product defect such as a scratch occurs in the glass tube G1 immediately after cutting by the first cutting unit 1, all the glass tubes G1 are transported to the next process. Is done. For this reason, each glass tube G1 does not pass through the conveying path in which the striking means 33 is disposed, and the interval between the two glass tubes G1 adjacent in the conveying direction is always kept within a certain range. Is done. Therefore, in this embodiment, malfunction due to the swinging of the striking means 33 does not occur, and the contact between each glass tube G1 and the striking member 332 (FIG. 5 (a)), except for the top glass tube G1, All are accompanied by impact by the striking means 33.

Here, for example, when the glass fine powder P is blown into the tube near the center of the glass tube G1 that is considerably long by the blow air A1, or when the inner diameter of the glass tube G1 is small and the pressure of the clean air A2 in the tube is sufficiently secured. In the case where it is difficult to do so, there is a possibility that the glass fine powder P cannot be sufficiently removed from the inside of the glass tube G1 only by cleaning the inside of the tube once.

However, even in such a case, in the present embodiment, the portion of the glass tube G1 that gives an impact is struck while the outer peripheral surface is struck multiple times by the plurality of striking means 33 while the glass tube G1 is conveyed and moved. In order to gradually change from the central portion side to the rear end side, the glass fine powder P is sequentially blown away from the central portion side to the rear end side of the glass tube G1. For this reason, the glass fine powder P adhering in the tube | pipe near the center part of the glass tube G1 can also be reliably blown off to the outer side of the glass tube G1. Even when a plurality of striking means 33 are provided, the operation of each striking means 33 is repeatedly performed between two glass tubes G1 adjacent in the transport direction.

And after each glass tube G1 which finished the cleaning in a tube is conveyed to the next process, both ends of glass tube G1 are recut by the 2nd cutting part 2, and it is baked with respect to the recut both ends. Processing is performed. Thus, a glass tube as a product is produced.

As described above, according to the glass tube cleaning device 3 of the present embodiment, the striking means 33 that gives an impact to the outer peripheral surface of each glass tube G1 includes the elastic member 331 whose base end is fixed to the device frame Fr, and the elastic member 331. The tapping member 332 provided on the front end side of the member 331, and the device configuration is very simple. Further, since the striking means 33 is continuously operated by the power of the drive source of the conveyor 400, it is not necessary to provide a power source dedicated to the striking means 33. Furthermore, since each glass tube G1 moving in a parallel state functions as a trigger for operating the hitting means 33, it is not necessary to separately provide a control means for controlling the operation. Therefore, it can be installed at low cost, and at the same time is suitable for installation in existing facilities.

Further, if a plurality of striking means 33 are provided at a predetermined interval in a direction orthogonal to the tube axis of the glass tube G1, a shock is applied to the glass tube G1 a plurality of times while the glass tube G1 moves a certain distance. Can do. Thereby, the glass fine powder P can be more reliably released from the inner peripheral surface of the glass tube G1 while suppressing the magnitude of the impact per time.

Furthermore, if each striking means 33 is provided at a position closer to the other end side (rear end side) of the glass tube G1 toward the conveyance downstream side of the glass tube G1, the glass fine powder P is supplied from the center side of the glass tube G1. It can be blown off sequentially toward the rear end side. Thereby, for example, when the glass fine powder P is blown into the tube near the center of the glass tube G1 which is considerably long by the blow air A1, or the inner diameter of the glass tube G1 is small, and the pressure of the clean air A2 in the tube is sufficiently secured. Even when it is difficult to do so, the glass fine powder P can be reliably removed from the glass tube G1.

In addition, since the protruding member 311 and the hitting member 332 are made of a heat-resistant resin, even when the temperature of the glass tube G1 is about 250 to 300 ° C., melting or deformation due to contact with the glass tube G1 does not occur. . Therefore, the glass tube G1 can be used without being stained or scratched on the outer peripheral surface of the glass tube G1, and can also be installed in a place with a severe temperature environment such as immediately after cutting by the first cutting unit 1.

Further, according to the glass tube cleaning and cutting apparatus 10 of the present embodiment, as described above, the glass tube G1 is a transport path, and in particular, the first cutting unit 1 and the second glass tube G1 are in a high temperature state. Since the glass tube cleaning device 3 of the present embodiment is disposed between the cutting portion 2 and the inside of the glass tube G1, the inside of the glass tube G1 can be cleaned immediately after the cutting. Thereby, it is possible to perform more effective dry cleaning before the humidity inside the glass tube G1 increases due to the influence of the combustion gas used when recutting both ends of the glass tube G1 in the second cutting unit 2. Thus, the glass tube G1 can be cut to a desired length while maintaining the cleanliness in the tube.

The glass tube cleaning device 3 and the cleaning and cutting device 10 according to the present embodiment have been described above, but the present invention can also be implemented in other forms.

For example, in the glass tube cleaning device 3 of the above embodiment, the elastic member 331 of the striking means 33 is configured to be deformed by being pressed by the one glass tube G1, but as shown in FIG. The endless transport member 410 may be provided with a pressing means 34 that presses and deforms the elastic member 331 of the striking means 33 instead of the one glass tube G1 by the movement of the endless transport member 410. As shown in FIGS. 8 and 9, the pressing unit 34 includes a plurality of suspension members 341 installed in parallel with a pair of roller chains. For example, the pressing unit 34 includes a virtual trajectory including the endless conveyance member 410. A plurality of projecting members (not shown) projecting in the direction intersecting the plane (preferably the normal direction) may be provided in parallel.

In the glass tube cleaning apparatus 3 ′ of this embodiment, each suspension member 341 constituting the pressing means 34 is below the corresponding glass tube G1 and close to the protruding member 311 that partitions the glass tube G1 on the upstream side of conveyance. Are arranged at the same distance as the projection members 311 of the partitioning means 31. Therefore, the elastic member 331 of the striking means 33 is pressed by the glass tube G1 to cause some deformation, but is deformed mainly by being pressed by the pressing means 34, and finally the pressure from the pressing means 34 is released. Sometimes elastically deforms. Therefore, also in this embodiment, there exists the same effect | action and effect as the glass tube cleaning apparatus 3 of the said embodiment.

According to the glass tube cleaning device 3 ', the pressing means 34 is directly involved in the operation of the striking means 33 instead of the glass tube G1. For this reason, even if it is a case where the glass tube G1 is conveyed in the state of missing teeth, the continuous operation | movement of the striking means 33 is not inhibited, and the said embodiment is applied with respect to all the glass tubes G1. In the same manner as the glass tube cleaning device 3 of FIG. The glass tube cleaning device 3 ′ can be used, for example, in the form of a glass tube cleaning and cutting device 20 shown in FIG. 9.

As shown in FIG. 9, the glass tube cleaning and cutting device 20 is configured such that the glass tube cleaning device 3 ′ is between the first cutting unit 1 and the second cutting unit 2 in the conveyance path of the glass tube G 1, and The second cutting part 2 is provided respectively. The operation of the glass tube cleaning device 3 ′ provided between the first cutting unit 1 and the second cutting unit 2 is the same as the glass tube cleaning device 3 of the above embodiment. The description is omitted here.

The glass tube cleaning device 3 ′ provided in the second cutting unit 2 is provided with second blowing means 32 a provided on the opposite side to the

second cutting blades

21 a and 21 b across the conveyance path of the conveyor 400. 32b and the striking means provided downstream of the

second cutting blades

21a and 21b and on the rear end side and the front end side of the glass tube G1 immediately after cutting by the

second cutting portions

21a and 21b, respectively. 33.

In the second cutting part 2, the blow air A1 is not blown into the tube of the glass tube G1 from the openings on both end sides which are to be cut, and the glass fine powder P can be blown to the vicinity of the central part of the glass tube G1 at the time of cutting. The property is much lower than that at the time of cutting by the first cutting part 1. For this reason, sufficient cleaning can be performed even with a single impact by one striking means 33.

Also, in the second cutting unit 2, it is conceivable that defective products are eliminated during the conveyance and the glass tube G1 is conveyed in a state of missing teeth. However, in the glass tube cleaning device 3 ′, as described above, the pressing means 34 is directly involved in the operation of the striking means 33 in place of the glass tube G1, so that the operation of the striking means 33 is inhibited. Absent. Therefore, according to the glass tube cleaning and cutting apparatus 20, the inside of the glass tube G1 can be kept highly clean until it is baked.

It should be noted that the present invention can be implemented in a mode in which various improvements, modifications, or variations are added based on the knowledge of those skilled in the art without departing from the spirit of the present invention. Moreover, you may implement with the form which substituted any invention specific matter to the other technique within the range which the same effect | action or effect produces.

Claims

A glass tube cleaning device that cleans the inside of a glass tube of a predetermined length that is conveyed in a direction parallel to the tube axis by a conveyor,
Partition means comprising a plurality of projecting members provided on the endless transport member at regular intervals along a circular path of the endless transport member of the conveyor, and partitioning each glass tube one by one at a predetermined interval in the transport direction; ,
A blowing means for blowing clean air into an opening on one end of each glass tube partitioned by the partitioning means;
A striking means for striking the outer peripheral surface of the glass tube into which clean air is blown by the blowing means to give an impact, and
The striking means is
An elastic member having a base end fixed to the device frame and deformed by being pressed by one glass tube by the movement of the endless conveying member;
Another glass tube that is provided on the distal end side of the elastic member and is adjacent to the one glass tube on the upstream side of conveyance by the elastic force of the elastic member that is elastically deformed when the pressure from the one glass tube is released. A tapping member for tapping,
A glass tube cleaning device comprising:
2. The glass tube cleaning apparatus according to claim 1, wherein a plurality of the hitting means are provided at predetermined intervals in a direction orthogonal to the tube axis of the glass tube.
3. The glass tube cleaning device according to claim 2, wherein the striking means is provided at a position closer to the other end side of the glass tube toward the downstream side of the conveyance of the glass tube.
2. The glass tube cleaning apparatus according to claim 1, wherein the hitting member is made of a heat resistant resin.
2. The glass tube cleaning apparatus according to claim 1, wherein the protruding member is made of a heat resistant resin.
The endless conveying member of the conveyor is provided with pressing means for pressing and deforming the elastic member of the striking means instead of the one glass tube by movement of the endless conveying member. Item 2. The glass tube cleaning apparatus according to Item 1.
By intermittently contacting the first cutting blade with the outer peripheral surface of the continuous glass tube that is continuously drawn and blown while blown air is blown, the outer peripheral surface of the continuous glass tube is scratched and subjected to thermal shock. Giving the first continuous cutting section to obtain a plurality of glass tubes by cutting the continuous glass tube by a predetermined length;
While conveying the glass tube obtained in the first cutting section in a direction orthogonal to the tube axis by a conveyor, each of the one end side and the other end side of the glass tube by the second cutting blade A second cutting part for forming a scratch on the outer peripheral surface and applying a thermal shock to cut one end side and the other end side of the glass tube;
The glass tube cleaning apparatus according to claim 1, wherein the glass tube cleaning path is disposed between the first cutting portion and the second cutting portion in the conveyance path of the glass tube.
An apparatus for cleaning and cutting glass tubes, comprising: