阅读说明：本技术 一种玻璃管端部在线连续封闭装置及方法 (Online continuous sealing device and method for end part of glass tube ) 是由 王力 滕建中 陈彦章 王立生 李益 于 2021-05-31 设计创作，主要内容包括：本发明公开了一种玻璃管端部在线连续封闭装置及方法,包括：用于运输玻璃管的输送机,所述输送机以第一方向输送玻璃管,所述输送机使玻璃管沿其轴向转动；至少一螺旋杆,所述螺旋杆设于所述输送机的一侧,所述螺旋杆具备螺旋槽,玻璃管的端部架设于所述螺旋槽上,所述螺旋杆向玻璃管施加一个第二方向上的拉力,所述第二方向垂直于所述第一方向且指向玻璃管的端部的外侧；加热装置,所述加热装置设于所述玻璃管的端部的内侧。该装置能够实现玻璃管在线连续封口的目的。(The invention discloses an online continuous sealing device and method for a glass tube end, which comprises the following steps: a conveyor for transporting the glass tube, the conveyor conveying the glass tube in a first direction, the conveyor rotating the glass tube in an axial direction thereof; the spiral rod is arranged on one side of the conveyor and provided with a spiral groove, the end part of the glass tube is erected on the spiral groove, the spiral rod applies a pulling force in a second direction to the glass tube, and the second direction is perpendicular to the first direction and points to the outer side of the end part of the glass tube; and the heating device is arranged on the inner side of the end part of the glass tube. The device can realize the purpose of continuously sealing the glass tube on line.)

1. An in-line continuous glass tube end closure device, comprising:

a conveyor for transporting the glass tube, the conveyor conveying the glass tube in a first direction, the conveyor rotating the glass tube in an axial direction thereof;

the spiral rod is arranged on one side of the conveyor and provided with a spiral groove, the end part of the glass tube is erected on the spiral groove, the spiral rod applies a pulling force in a second direction to the glass tube, and the second direction is perpendicular to the first direction and points to the outer side of the end part of the glass tube;

and the heating device is arranged on the inner side of the end part of the glass tube.

2. The apparatus of claim 1 wherein the screw rotates at a rotational speed that matches the speed of the conveyor.

3. The device for continuously closing the end part of the glass tube in-line as claimed in claim 2, comprising two screw rods which are respectively arranged at two sides of the conveyor, and the rotation directions of the two screw rods are opposite.

4. The apparatus of claim 1, wherein the spiral groove has a trapezoidal cross-sectional shape having a first slope, a second slope, and a groove bottom surface connecting the first slope and the second slope, and the glass tube is in contact with the first slope and the second slope.

5. The apparatus of claim 4 wherein a gap is provided between the glass tube and the trough bottom surface.

6. The device for continuously closing the end part of the glass tube in-line as claimed in any one of claims 1 to 5, further comprising a driving motor, wherein the driving motor is in driving connection with the screw rod.

7. The apparatus of any of claims 1-5, wherein the conveyor comprises at least two conveyor chains and at least one conveyor belt, the conveyor chains and the conveyor belts are arranged in the first direction, and the conveyor chains and the conveyor belts are arranged in parallel with each other.

8. The apparatus as claimed in claim 7, wherein the conveyor chain is provided with a plurality of placement grooves arranged in an array, and the surface of the conveyor belt contacting the glass tube is higher than the bottom surface of the placement grooves.

9. The apparatus of any of claims 1 to 5, wherein the heating device comprises a torch, the torch is disposed in an elongated shape, the length of the torch is along a first direction, and the length of the torch is greater than the total length of the glass tubes in the array.

10. An online continuous closing method for the end part of a glass tube, which is characterized by comprising the following steps:

conveying a glass tube along a first direction, and rotating the glass tube in the conveying process, wherein the first direction is the radial direction of the glass tube;

continuously applying a pulling force in a second direction to the glass tube during the conveying, the pulling force being displaced synchronously with the glass tube, wherein the second direction is perpendicular to the first direction and is directed outside the end of the glass tube;

the inner side of the end portion of the glass tube is heated to melt the material inside the end portion of the glass tube, and the material is reduced in diameter and broken by the tensile force, and is automatically closed by the surface tension of the material.

Technical Field

The invention relates to the technical field of end sealing of glass tubes, in particular to an online continuous sealing device and method for the end of a glass tube.

Background

The domestic 7.0 medicinal glass tube adopts the Japanese NEG fine cutting round technology, and the sold glass tube has two open ends. The two ends are sealed to reduce the risk of foreign matters entering the glass tube in the storage and transportation processes. The medicinal glass tube is used as a raw material product for producing medicinal small bottles, and researches show that the glass tube with the sealed end can slow down the volatilization speed of boron in the production process, is favorable for improving the water resistance level of the small bottles and is helpful for improving the quality of the small bottles.

Some domestic manufacturers begin to develop a 7.0 medical glass tube sealing technology, and seal the medical glass tube by using domestic solar tube sealing equipment, but the equipment is not suitable for on-line production of a tube drawing production line, and the main reasons are as follows: the glass tube must be in a stop state when being sealed, namely the glass tube is moved intermittently on a conveyer, so that the speed of the device is limited, the ampoule tube with high production speed cannot be used, and the intermittent movement cannot be used under the condition that a tube drawing production line runs continuously. Therefore, the domestic 7.0 generally adopts off-line sealing and is suitable for large-size small flat pipes.

Disclosure of Invention

Aiming at the problems in the prior art, the invention aims to provide an online continuous sealing device and method for the end part of a glass tube, which can realize the purpose of online continuous sealing of the glass tube.

The specific technical scheme is as follows:

an online continuous closing device for the end part of a glass tube mainly comprises: a conveyor for transporting the glass tube, the conveyor conveying the glass tube in a first direction, the conveyor rotating the glass tube in an axial direction thereof;

the spiral rod is arranged on one side of the conveyor and provided with a spiral groove, the end part of the glass tube is erected on the spiral groove, the spiral rod applies a pulling force in a second direction to the glass tube, and the second direction is perpendicular to the first direction and points to the outer side of the end part of the glass tube;

and the heating device is arranged on the inner side of the end part of the glass tube.

In the above-described in-line continuous glass tube end closing apparatus, the screw rotates at a rotational speed matching the conveying speed of the conveyor.

In the above-mentioned on-line continuous glass tube end closing device, it is further characterized in that the device comprises two screw rods, the two screw rods are respectively arranged at two sides of the conveyor, and the rotation directions of the two screw rods are opposite.

In the above-described online continuous closing device for a glass tube end portion, further having a feature that a sectional shape of the spiral groove is trapezoidal, the sectional shape of the spiral groove has a first inclined surface, a second inclined surface, and a groove bottom surface connecting the first inclined surface and the second inclined surface, the glass tube being in contact with the first inclined surface and the second inclined surface.

In the above-described in-line continuous closing device for an end portion of a glass tube, there is also a feature that a gap is provided between the glass tube and the bottom surface of the groove.

In the above on-line continuous sealing device for the end part of the glass tube, the device is further characterized by further comprising a driving motor, wherein the driving motor is in driving connection with the screw rod through a speed reducer.

In the above-mentioned in-line continuous glass tube end closing apparatus, the conveyor includes at least two conveyor chains and at least one conveyor belt, the conveyor chains and the conveyor belt are arranged along the first direction, and the conveyor chains and the conveyor belt are arranged in parallel with each other.

In the above-mentioned in-line continuous glass tube end closing device, the conveyor chain is provided with placing grooves arranged in an array, and the surface of the conveyor belt contacting the glass tube is higher than the bottom surface of the placing grooves.

In the above-mentioned online continuous closing device of glass pipe end portion, still have such a characteristic, heating device includes the torch, the torch is microscler setting, the length direction of torch sets up along the first direction, the length of torch is greater than the array the total length of glass pipe.

An online continuous sealing method for the end part of a glass tube, which comprises the steps of conveying the glass tube along a first direction and rotating the glass tube in the conveying process, wherein the first direction is the radial direction of the glass tube;

continuously applying a pulling force in a second direction to the glass tube during the conveying, the pulling force being displaced synchronously with the glass tube, wherein the second direction is perpendicular to the first direction and is directed outside the end of the glass tube;

the inner side of the end portion of the glass tube is heated to melt the material inside the end portion of the glass tube, and the material is reduced in diameter and broken by the tensile force, and is automatically closed by the surface tension of the material.

The positive effects of the technical scheme are as follows:

the invention provides an online continuous sealing device and method for the end part of a glass tube, which can realize the purpose of online continuous sealing of the glass tube.

Drawings

FIG. 1 is a schematic structural view of an in-line continuous glass tube end closing device according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a first schematic representation of a glass tube seal according to an embodiment of the present invention;

fig. 3 is a schematic diagram illustrating a second principle of a glass tube sealing according to an embodiment of the present invention.

In the drawings: 1. a glass tube; 11. a main body portion; 2. a conveyor; 21. a conveyor chain; 211. a placement groove; 22. a conveyor belt; 3. a screw rod; 31. a helical groove; 311. a first inclined plane; 312. a second inclined plane; 313. the bottom surface of the groove; 4. a heating device; 5. a drive motor; 6. a speed reducer; 7. a universal coupling; 8. a bearing seat; a. a first direction; b. a second direction; c1, end of glass tube; c2, inside the end of the glass tube; c3, outside the end of the glass tube.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below by way of embodiments with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The numbering of the components themselves, such as "first", "second", etc., is used herein only to distinguish between the objects depicted and not to have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings). In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Referring to fig. 1 to 3, fig. 1 is a schematic structural view of an on-line continuous sealing device for glass tube ends according to an embodiment of the present invention; FIG. 2 is a schematic diagram of a first schematic representation of a glass tube seal according to an embodiment of the present invention; fig. 3 is a schematic diagram illustrating a second principle of a glass tube sealing according to an embodiment of the present invention.

The invention discloses an online continuous sealing device for the end part of a glass tube, which comprises: a conveyor 2, a screw 3 and a heating device 4.

The conveyor 2 is used for transporting the glass tube 1, the conveyor 2 conveys the glass tube 1 in a first direction a, and the conveyor 2 rotates the glass tube 1 in its axial direction.

Wherein the conveyor 2 transports the glass tube 1 to a first direction a, which is a radial direction of the glass tube 1, in this embodiment, the first direction a includes a positive direction of the first direction a and a negative direction of the first direction a, and further, the conveyor 2 transports the glass tube 1 to the positive direction of the first direction a.

Alternatively, the conveyor 2 comprises at least two conveyor chains 21 and at least one conveyor belt 22, the conveyor chains 21 and the conveyor belt 22 being arranged in the first direction a, the conveyor chains 21 and the conveyor belt 22 being arranged alongside each other.

Alternatively, in the present embodiment, the conveyor chain 21 includes two, the distance between the two conveyor chains 21 is smaller than the length of the glass tube 1, and the end c1 of the glass tube extends out of the conveyor chain 21 and toward the screw rod 3. Of course the conveyor chain 21 may also comprise three or even more than three.

Alternatively, in the present embodiment, the conveyor belt 22 includes two belts, each of which is disposed between two conveyor chains 21. Of course, the conveyor 22 may also comprise three or even more than three.

Specifically, in the present embodiment, the conveyor chain 21 includes the placement grooves 211 arranged in an array, and the surface of the conveyor belt 22 contacting the glass tube 1 is higher than the bottom surface of the placement grooves 211. Placing the glass tube 1 in the placing groove 211, wherein the placing groove 211 has two inner side walls during the process of conveying the glass tube 1 in the positive direction of the first direction a by the conveying chain 21, one of the inner side walls of the placing groove 211 gives a pushing force to the glass tube 1 in the positive direction of the first direction a, and carries the glass tube 1 to linearly translate in the positive direction of the first direction a, the bottom of the glass tube 1 contacts with the surface of the conveying belt 22 because the surface of the conveying belt 22 contacting with the glass tube 1 is higher than the bottom surface of the placing groove 211, the surface of the conveying belt 22 contacts with the surface of the conveying belt 22, the conveying belt 22 gives a friction force to the glass tube 1 during the conveying process, in order to rotate the glass tube 1, the friction force given to the glass tube 1 by the conveying belt 22 should include a component force in the direction opposite to the direction of the glass tube 1 by the conveying chain 21, in other words, the conveying belt 22 should give a component in the negative direction of the first direction a force to the bottom of the glass tube 1, thereby carrying the glass tube 1 to rotate along its axis.

The part of the glass tube 1 on the conveyor 2 is defined as a main body part 11, the part of the glass tube 1 beyond the conveyor 2 is defined as an end part c1 of the glass tube, and the side of the end part c1 of the glass tube, which is far away from the main body part 11, is referred to as an outer side c3 of the end part of the glass tube.

Alternatively, as an optional embodiment of the present embodiment, the spiral rod 3 includes one, and is disposed on one side of the conveyor 2, and the axial direction of the spiral rod 3 is disposed along the first direction a.

The screw rod 3 has a spiral groove 31, and an end c1 of the glass tube is wound around the spiral groove 31.

The conveyor 2 continuously conveys the glass tube 1 with it, and in order to keep the end c1 of the glass tube in a state of being held on the spiral groove 31, the screw 3 is rotated at a rotational speed matched with the conveying speed of the conveyor 2, and therefore the screw 3 needs to give a force in the positive direction of the first direction a to the glass tube 1.

In this embodiment, the screw rod 3 rotates and moves linearly, the contact point of the screw rod 3 and the glass tube 1 provides a friction force to the glass tube 1, the friction force can be decomposed into two component forces in a first direction a and a second direction b, the second direction b is perpendicular to the first direction a and points to the outer side c3 of the end part of the glass tube 1, wherein the component force in the first direction a drives the glass tube 1 to move in the positive direction of the first direction a, and the component force in the first direction a drives the glass tube 1 to move in the positive direction of the first direction a at the same speed as the conveying speed of the conveyor 2; the component force in the second direction b is that the screw rod 3 applies a pulling force in the second direction b to the glass tube 1, so that the glass tube 1 pulls the end portion c1 of the glass tube 1 to separate from the main body portion 11 in the second direction b and fall off in the process of being burnt by the heating device 4.

Further, the screw rod driving device further comprises a driving motor 5, and the driving motor 5 is in driving connection with the screw rod 3. Further, the driving motor 5 is in driving connection with the screw rod 3 through the speed reducer 6, the universal coupling 7 and the bearing seat 8, and the driving motor 5 drives the screw rod 3 to rotate along the second direction b and to move linearly along the positive direction of the first direction a.

The spiral groove 31 has a trapezoidal cross-sectional shape, the spiral groove 31 has a cross-sectional shape having a first inclined surface 311, a second inclined surface 312, and a groove bottom surface 313 connecting the first inclined surface 311 and the second inclined surface 312, and the glass tube 1 is in contact with the first inclined surface 311 and the second inclined surface 312.

Preferably, the first inclined surface 311 and the second inclined surface 312 are symmetrically arranged, in other words, the cross section of the spiral groove 31 is shaped like an isosceles trapezoid, so that the contact points of the glass tube 1 and the first inclined surface 311 and the second inclined surface 312 are parallel, and further, the two sides of the glass tube 1 are subjected to the same height of the pulling force, so that the glass tube 1 is more uniform when being pulled out, and the sealing appearance is more attractive.

Preferably, there is a gap between the glass tube 1 and the groove bottom surface 313. Compared with the case that the glass tube 1 is contacted with the first inclined plane 311, the second inclined plane 312 and the groove bottom surface 313 of the spiral groove 31, the friction resistance of the groove bottom surface 313 to the glass tube 1 is avoided, so that the glass tube 1 rotates more smoothly, and the sealing is performed smoothly.

The heating device 4 is provided inside c2 of the end of the glass tube 1.

The inner side c2 of the end of the glass tube 1 means the side of the end c1 of the glass tube closer to the body 11.

Optionally, in this embodiment, the heating device 4 includes a torch, the torch is in a long shape, the length direction of the torch is set along the first direction a, and the length of the torch is greater than the total length of the glass tubes 1 of the array.

Glass pipe 1 advances in succession on conveyer 2, when advancing to heating device 4 at present, heating device 4 heats glass pipe 1, at the in-process of heating, heating device 4 heats glass pipe 1's part, but because glass pipe 1 is at the rotation, consequently can realize the even heating to glass pipe 1 whole circumference, reach glass's softening temperature point when heating, softened glass can become thin under tensile effect, become a point during the separation, under the effect of surface tension, softened glass can retract and seal, thereby realize sealing.

Optionally, as an optional implementation manner of this embodiment, two screw rods 3 are included, the two screw rods 3 are respectively disposed on two sides of the conveyor 2, and the rotation directions of the two screw rods 3 are opposite. The arrangement can realize the purpose of sealing the two ends of the glass tube 1 at the same time.

In the online continuous sealing device for the end part of the glass tube in the embodiment, the characteristic that the spiral groove 31 can stably advance in the rotation process of the spiral rod 3 is utilized, the friction force generated by the contact of the glass tube 1 and the spiral groove 31 is utilized as the pulling force, the pulling sealing action is realized, the advancing speed of the spiral groove 31 is consistent with the advancing speed of the glass tube 1, the synchronous operation of the pulling force and the end part c1 of the glass tube is always realized in the continuous advancing process of the glass tube 1, and the purpose of continuous online sealing of the glass tube 1 is further realized.

The invention also discloses an online continuous sealing method for the end part of the glass tube, which comprises the following steps:

conveying a glass tube 1 along a first direction, and rotating the glass tube 1 in the conveying process, wherein the first direction a is the radial direction of the glass tube 1;

continuously applying a pulling force in a second direction to the glass tube 1 during said conveying, said pulling force being displaced synchronously with said glass tube 1, wherein said second direction is perpendicular to said first direction and directed towards the outer side c3 of the end of the glass tube;

the inner side c2 of the end of the glass tube is heated to melt the material of the inner side c2 of the end of the glass tube, and the material is reduced in diameter and broken by the tensile force, and is automatically closed by the surface tension of the material.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.