Traction wheel and traction assembly for glass tube production
By setting annular grooves and annular grooves on the traction wheels produced by glass tubes, sandblasting and coating treatment, the problems of insufficient friction and scratches of ceramic traction wheels are solved, higher traction and lower scratch risk are achieved, and the quality and pass rate of glass tube production are improved.
Patent Information
- Application Number
- CN202421869505.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-05
- Publication Date
- 2025-04-29
- Estimated Expiration
- 2034-08-05
AI Technical Summary
The existing ceramic traction wheels are insufficient in the production process of glass tubes and are prone to scratches on the glass tubes, affecting product quality and pass rate.
A traction wheel for glass tube production is designed, by providing a first annular groove and a plurality of annular grooves on the outer circular surface of the contact ring, an effective contact area between the glass tube and the contact ring is increased, and a sandblasting treatment is carried out on the outer circular surface of the contact ring and a polyimide coating is provided to increase the coefficient of friction and reduce the risk of scratches.
By increasing the contact area and friction coefficient, the traction force on the glass tube is improved, the pressure on the glass tube is reduced, damage to the glass tube is avoided, and the quality and qualification rate of the product are improved.
Smart Images
Figure CN222808755U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of glass tubes, in particular to a traction wheel and a traction component used for glass tube production. Background Art
[0002] In the production process of pharmaceutical glass tubes, the traction machine plays a vital role. Its main function is to provide pulling force for the glass tube, shape it and transfer it to the next process. In the prior art, the traction machine uses a ceramic traction wheel as the material in contact with the glass tube to complete the pulling process. However, in actual production, due to the smooth surface of the ceramic, the effective contact area between the traction wheel and the glass tube is very small, and the traction force provided is insufficient; at the same time, due to the high hardness of the ceramic itself, the glass tube will be scratched during the traction process, affecting the quality of the glass tube and reducing the product qualification rate. Utility Model Content
[0003] The utility model aims to provide a traction wheel and a traction assembly for glass tube production, so as to solve the problem that the existing traction wheel has insufficient friction force and damages the glass tube.
[0004] In order to solve the above technical problems, the technical solution provided by the utility model is:
[0005] A traction wheel for glass tube production, comprising a contact ring, wherein the outer circumferential surface of the contact ring is provided with a first annular groove, and the axis of the first annular groove is colinear with the axis of the contact ring;
[0006] An annular groove is formed on the surface of the first annular groove, and the axis of the annular groove is collinear with the axis of the first annular groove;
[0007] The plurality of annular grooves are arranged along the axis of the first annular groove.
[0008] Furthermore, the cross-sectional profile of the first annular groove is arc-shaped.
[0009] Furthermore, the cross-section of the annular groove is U-shaped.
[0010] Furthermore, the outer cylindrical surface of the contact ring is sandblasted.
[0011] Furthermore, the abrasive for sandblasting is aluminum oxide, and the contact ring is made of ceramic material.
[0012] Furthermore, a polyimide coating is provided on the outer circle of the contact ring after sandblasting.
[0013] Further, the traction wheel for glass tube production also includes an inner ring and a silicone ring;
[0014] The silicone ring is inserted into the contact ring, and the silicone ring is sleeved on the inner ring.
[0015] Furthermore, a second annular groove is formed on the outer circumferential surface of the inner ring, and the axis of the second annular groove is colinear with the axis of the inner ring;
[0016] The silicone ring is clamped in the second annular groove.
[0017] Furthermore, the inner ring is made of stainless steel.
[0018] Another aspect of the present invention provides a traction assembly, comprising the above-mentioned traction wheel for glass tube production, wherein the axes of the two traction wheels are parallel and the plane where the axes of the two traction wheels are located is perpendicular to the glass tube;
[0019] The glass tube abuts against the first annular grooves of the two traction wheels.
[0020] Based on the above technical solutions, the technical effects that can be achieved by the utility model are:
[0021] The utility model provides a traction wheel for glass tube production, comprising a contact ring, an outer circumferential surface of the contact ring is provided with a first annular groove, the axis of the first annular groove is collinear with the axis of the contact ring; an annular groove is opened on the surface of the first annular groove, the axis of the annular groove is collinear with the axis of the first annular groove; a plurality of annular grooves are arranged along the axis of the first annular groove.
[0022] The traction wheel for glass tube production provided by the utility model increases the effective contact area between the glass tube and the contact ring by setting the first annular groove and the annular groove, changes the original one-point contact into multiple-point contact, increases the contact area and reduces the pressure on the glass tube, thereby increasing the traction force on the glass tube and avoiding damage to the glass tube. At the same time, the multiple-point contact can increase the friction coefficient between the contact ring and the glass tube, which is conducive to reducing the positive pressure of the contact ring on the glass tube, thereby further reducing the pressure on the glass tube to avoid damage.
[0023] Specifically, the provision of the annular groove can make the contact between the contact ring and the glass tube become at least two-point contact, thereby increasing the friction force on the glass tube to increase the traction force and reduce the pressure on the glass tube. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0025] Figure 1 A front view of a traction wheel for glass tube production provided by an embodiment of the utility model;
[0026] Figure 2 for Figure 1 The enlarged view of point A in the middle;
[0027] Figure 3 A left side view of a traction wheel for glass tube production provided by an embodiment of the utility model;
[0028] Figure 4 A schematic diagram of the structure of a traction wheel for glass tube production provided by an embodiment of the utility model;
[0029] Figure 5 A cross-sectional view of a traction wheel for glass tube production provided by an embodiment of the utility model;
[0030] Figure 6 Schematic diagram of contact between the glass tube and the annular groove;
[0031] Figure 7 A schematic diagram of the structure of the traction component.
[0032] Icon: 100-contact ring; 200-inner ring; 300-silicone ring; 110-first annular groove; 120-annular groove; 10-glass tube. DETAILED DESCRIPTION
[0033] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.
[0034] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0035] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.
[0036] In the production process of pharmaceutical glass tubes, the traction machine uses a ceramic traction wheel as the material in contact with the glass tube to complete the pulling process. Due to the smooth surface of the ceramic, the effective contact area between the traction wheel and the glass tube is very small, and the traction force provided is insufficient; at the same time, due to the high hardness of the ceramic itself, the glass tube will be scratched during the traction process, affecting the quality of the glass tube and reducing the product qualification rate.
[0037] In view of this, the utility model provides a traction wheel for glass tube production, including a contact ring 100, the outer cylindrical surface of the contact ring 100 is provided with a first annular groove 110, the axis of the first annular groove 110 is collinear with the axis of the contact ring 100; the surface of the first annular groove 110 is provided with an annular groove 120, the axis of the annular groove 120 is collinear with the axis of the first annular groove 110; a plurality of annular grooves 120 are arranged along the axis of the first annular groove 110.
[0038] The traction wheel for glass tube production provided by the utility model increases the effective contact area between the glass tube and the contact ring 100 by setting the first annular groove 110 and the annular groove 120, changes the original one-point contact into multiple-point contact, increases the contact area and reduces the pressure on the glass tube, thereby increasing the traction force on the glass tube and avoiding damage to the glass tube. At the same time, the multiple-point contact can increase the friction coefficient between the contact ring 100 and the glass tube, which is conducive to reducing the positive pressure of the contact ring 100 on the glass tube, thereby further reducing the pressure on the glass tube to avoid damage.
[0039] Specifically, the provision of the annular groove 120 can make the contact between the contact ring 100 and the glass tube become at least two-point contact, thereby increasing the friction force on the glass tube to increase the traction force and reduce the pressure on the glass tube.
[0040] The following combination Figure 1-Figure 6 The structure and shape of the traction wheel for glass tube production provided in this embodiment are described in detail:
[0041] In this embodiment, the traction wheel for glass tube production includes a contact ring 100, an inner ring 200 and a silicone ring 300. The silicone ring 300 is inserted into the contact ring 100 and sleeved on the inner ring 200. Figure 3 , Figure 4 The contact ring 100 is made of ceramic material, and its outer surface is provided with a first annular groove 110, as shown in FIG. Figure 1 Therefore, the axis of the first annular groove 110 is collinear with the axis of the contact ring 100. An annular groove 120 is provided on the surface of the first annular groove 110, and the axis of the annular groove 120 is collinear with the axis of the first annular groove 110; a plurality of annular grooves 120 are arranged along the axis of the first annular groove 110, such as Figure 2 In this embodiment, the annular grooves 120 are small in width and large in number, so only Figure 2 , Figure 5 The specific structure of the annular groove 120 is shown in the figure to avoid unclear display, and the annular groove 120 is omitted in other figures.
[0042] Since the pulling speed of the traction wheel on the glass tube is relatively fast during the production process, the position of the glass tube is not fixed, that is, the glass tube is not fixed in the middle position. In this embodiment, the glass tube is not fixed at the bottom of the first annular groove 110, but will move along the axis direction of the contact ring 100 during the pulling process. Therefore, multiple annular grooves 120 are provided on the surface of the first annular groove 110 to ensure that each position can generate sufficient traction force on the glass tube. At this time, the diameter of the annular groove 120 changes with the diameter of the first annular groove 110.
[0043] In this embodiment, the cross-sectional profile of the first annular groove 110 is an arc shape, so as to reduce the movement of the glass tube along the axis of the contact ring 100, so that the glass tube is closer to the bottom of the arc during the traction process, thereby enhancing the stability of the glass tube traction.
[0044] In this embodiment, the cross section of the annular groove 120 is U-shaped to increase the contact points with the glass tube. Figure 6 As shown, the friction coefficient and supporting points between the contact ring 100 and the glass tube are increased, the friction force is increased and the pressure is reduced, and finally the traction force is increased and the damage to the glass tube is avoided. Furthermore, the contact position between the annular groove 120 and the glass tube is rounded to further avoid scratches.
[0045] In order to further improve the friction between the contact ring 100 and the glass tube, after the annular groove 120 is provided, the outer circumferential surface of the contact ring 100 is sandblasted to improve the surface roughness. Specifically, the sandblasting abrasive is aluminum oxide.
[0046] In order to prevent the contact ring 100 from scratching the surface of the glass tube, a polyimide coating is provided on the outer circumferential surface of the contact ring 100 after sandblasting. The polyimide coating can maintain chemical stability in a high temperature environment and provide good lubrication properties, thereby further reducing the possibility of scratching the glass tube. It should be noted that the thickness of the polyimide coating is very small and will not affect the friction coefficient increased by sandblasting.
[0047] Specifically, the polyimide coating may be provided by ultrasonic spraying, sol-gel method, chemical plating, thermal spraying or the like.
[0048] In this embodiment, the silicone ring 300 is used to provide a buffer for the contact ring 100, increase the flexibility of the contact ring 100 when in contact with the glass tube, avoid violent collision or extrusion between the glass tube and the contact ring 100, and thus avoid damage to the glass tube by the contact ring 100.
[0049] Specifically, the inner surface of the contact ring 100 is provided with an annular protrusion, and the silicone ring 300 is provided with a corresponding annular groove to engage with the contact ring 100, thereby ensuring a reliable connection between the silicone ring 300 and the contact ring 100 and avoiding axial relative displacement. Figure 5 As shown. Similarly, the outer circumferential surface of the inner ring 200 is provided with a second annular groove, the axis of the second annular groove is colinear with the axis of the inner ring 200, and the silicone ring 300 is clamped in the second annular groove. That is, the silicone ring 300 is used to achieve connection and buffering between the contact ring 100 and the inner ring 200, and prevent axial relative displacement between the parts, thereby ensuring stable operation of the traction wheel.
[0050] In this embodiment, the inner ring 200 is made of stainless steel and is used to connect with the rotating shaft of the traction machine.
[0051] In this embodiment, the silicone ring 300 is made of high temperature resistant silicone to avoid being affected by high temperature. In addition, the silicone material can also be replaced by polyetheretherketone, polyurethane, rubber and other materials.
[0052] The traction wheel for glass tube production provided in this embodiment improves the roughness of the surface of the contact ring 100 by providing the arc-shaped first annular groove 110 and the annular groove 120 arranged along the axis of the first annular groove 110, and further performs sandblasting to improve the friction coefficient between the contact ring 100 and the glass tube, thereby improving the traction force and reducing the requirement for the positive pressure, which is conducive to reducing the damage to the glass tube while ensuring the traction force. In addition, due to the increase in the traction force of a single traction wheel, the total number of traction wheels can be reduced.
[0053] The polyimide coating provides lubrication while ensuring friction, thereby avoiding scratches on the glass tube. The silicone ring 300 provides a buffer for the contact between the contact ring 100 and the glass tube, further reducing the possibility of scratches.
[0054] Based on the traction wheel for glass tube production provided in this embodiment, a traction assembly is proposed, including the traction wheel for glass tube production described above, wherein the axes of the two traction wheels are parallel and the planes where the axes of the two traction wheels are located are perpendicular to the glass tube 10; the glass tube 10 abuts against the first annular grooves 110 of the two traction wheels, such as Figure 7 shown.
[0055] That is, the two traction wheels rotate in opposite directions to drive the glass tube 10 forward. Due to the increase in the friction force of the traction wheel on the glass tube 10, the number of traction components can be reduced. The existing traction components need to be set up with three groups, that is, six traction wheels, while the traction component of this embodiment only needs one group to meet the traction requirements, reducing the number of contacts between the glass tube 10 and the traction wheel, thereby reducing the chance of scratches. At the same time, it avoids the traction components between different groups from pushing and pulling the glass tube 10 in opposite directions along the axial direction of the traction wheel, ensuring the quality of the glass tube 10 and avoiding scratches perpendicular to the axis of the glass tube 10.
[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.
Claims
1. A traction wheel for glass tube production, characterized in that: It comprises a contact ring (100), wherein the outer circumferential surface of the contact ring (100) is provided with a first annular groove (110), and the axis of the first annular groove (110) is colinear with the axis of the contact ring (100); An annular groove (120) is provided on the surface of the first annular groove (110), and the axis of the annular groove (120) is colinear with the axis of the first annular groove (110); The plurality of annular grooves (120) are arranged along the axis of the first annular groove (110).
2. The traction wheel for glass tube production according to claim 1, characterized in that: The cross-sectional profile of the first annular groove (110) is arc-shaped.
3. The traction wheel for glass tube production according to claim 1, characterized in that: The cross section of the annular groove (120) is U-shaped.
4. The traction wheel for glass tube production according to claim 3, characterized in that: The outer circumferential surface of the contact ring (100) is sandblasted.
5. The traction wheel for glass tube production according to claim 4, characterized in that: The abrasive material for sandblasting is aluminum oxide, and the contact ring (100) is made of ceramic material.
6. The traction wheel for glass tube production according to claim 4, characterized in that: After sandblasting, a polyimide coating is provided on the outer circumference of the contact ring (100).
7. The traction wheel for glass tube production according to claim 1, characterized in that: It also includes an inner ring (200) and a silicone ring (300); The silicone ring (300) is inserted into the contact ring (100), and the silicone ring (300) is sleeved on the inner ring (200).
8. The traction wheel for glass tube production according to claim 7, characterized in that: A second annular groove is formed on the outer circumferential surface of the inner ring (200), and the axis of the second annular groove is colinear with the axis of the inner ring (200); The silicone ring (300) is snap-fitted into the second annular groove.
9. The traction wheel for glass tube production according to claim 8, characterized in that: The inner ring (200) is made of stainless steel.
10. A traction assembly, characterized in that: A traction wheel for glass tube production according to any one of claims 1 to 9, wherein the axes of the two traction wheels are parallel and the planes in which the axes of the two traction wheels lie are perpendicular to the glass tube; The glass tube abuts against the first annular grooves (110) of the two traction wheels.