Glass tube melting and sealing jig

Abstract

The utility model provides a glass tube melt sealing jig, and belongs to the technical field of tool clamps. The glass tube melt sealing jig comprises a clamp base, a main shaft mounting block, a clamp main shaft and a friction sleeve. The main shaft installation block is fixedly installed on the clamp base, a vertical through hole is formed in the main shaft installation block, and the clamp main shaft is installed in the vertical through hole through a bearing. The friction sleeve is provided with a glass tube mounting hole along the axis, and sleeves the upper end part of the clamp main shaft through the lower end of the glass tube mounting hole; and the upper end of the glass tube mounting hole is used for mounting a glass tube part and is in clearance fit with the glass tube part. The peripheral surface of the friction sleeve is a friction surface which is used for receiving friction force to rotate and driving the glass tube part to rotate. The laser fusion sealing device can be applied to laser fusion sealing, a main shaft for driving the glass tube part to rotate does not need to be arranged, and the fusion sealing machining efficiency of the glass tube part can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tooling fixtures, in particular to a glass tube melting and sealing fixture. Background Art

[0002] During the processing of some glass tube parts, it is necessary to seal them to form a closed cavity inside the glass tube. Currently, the glass tube is generally heated by laser, and the end of the glass tube is melted to complete the sealing. During the laser heating of the glass tube, the glass tube needs to rotate around the axis to make the heating uniform. The existing glass tube melting and sealing machines generally set a rotating main shaft at the laser heating station to drive the glass tube to rotate, and the loading and unloading operations are carried out at this station, so the processing efficiency will be limited. Content of the Utility Model

[0003] To solve the technical problems in the background art, the utility model aims to provide a glass tube melting and sealing fixture that can improve the processing efficiency. The purpose of the utility model can be achieved by the following technical solutions.

[0004] A glass tube melting and sealing fixture includes: a fixture base, a main shaft mounting block, a fixture main shaft, and a friction sleeve.

[0005] The main shaft mounting block is fixedly installed on the fixture base. A vertical through hole is provided on the main shaft mounting block, and the fixture main shaft is installed in the vertical through hole through a bearing.

[0006] The friction sleeve is provided with a glass tube mounting hole along the axis, and the lower end of the glass tube mounting hole is sleeved on the upper end of the fixture main shaft. The upper end of the glass tube mounting hole is used to install the glass tube part and is in clearance fit with the glass tube part. The outer peripheral surface of the friction sleeve is a friction surface, and the friction surface is used to receive the frictional force for self-rotation and drive the glass tube part to rotate.

[0007] Further, a groove is provided on the fixture base below the main shaft mounting block, and the main shaft mounting block straddles the groove; the lower end of the fixture main shaft extends into the groove, and a fastening nut is installed at the lower end of the fixture main shaft.

[0008] Further, a positioning rod mounting hole is provided along the axis of the fixture main shaft, the positioning rod mounting hole is communicated with the glass tube mounting hole, and a positioning rod is installed in the positioning rod mounting hole. The positioning rod is used for axially positioning the glass tube part installed in the glass tube mounting hole.

[0009] Further, a collar is provided in the middle of the positioning rod, the positioning rod mounting hole is a stepped hole, and a spring is installed between the collar and the stepped surface of the stepped hole.

[0010] Further, it further includes a lower limit adjusting plate installed at the bottom of the groove; the lower limit adjusting plate is used to contact the lower end of the positioning rod to determine the lower limit position of the positioning rod.

[0011] Furthermore, the lower limit adjusting plate is fixed to the bottom of the groove by two bolts with different helix directions.

[0012] Furthermore, the fixture base has two layers. The lower layer is provided with screw holes for fixing the fixture base, and the upper layer is equipped with a positioning structure for positioning the fixture base.

[0013] Furthermore, the positioning structure is positioning bolts arranged on both sides of the friction sleeve, and the circumferential surface of the head of the positioning bolt is the positioning surface.

[0014] Furthermore, a chamfer is provided at the entrance of the glass tube mounting hole.

[0015] Furthermore, the outer peripheral surface of the friction sleeve is coated with a rubber coating.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] The present utility model installs the glass tube parts on the fixture, which can save the time of loading and unloading, and improve the efficiency of laser melting and sealing. The present utility model does not need to set a main shaft connected to the glass tube parts. By applying a tangential frictional force to the friction sleeve, the glass tube parts can be driven to rotate, reducing the positioning and installation cost and improving the working efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the glass tube melting and sealing fixture in Embodiment 1 of the present utility model;

[0019] Figure 2 is a cross-sectional view of the glass tube melting and sealing fixture in Embodiment 1 of the present utility model;

[0020] Figure 3 is a schematic structural diagram of the glass tube melting and sealing fixture in Embodiment 2 of the present utility model;

[0021] Figure 4 is a cross-sectional view of the glass tube melting and sealing fixture in Embodiment 2 of the present utility model;

[0022] Figure 5 is an installation schematic diagram of the positioning rod in Embodiment 3 of the present utility model;

[0023] Figure 6 is a cross-sectional view of the glass tube melting and sealing fixture in Embodiment 3 of the present utility model;

[0024] Figure 7 is a schematic structural diagram of the glass tube melting and sealing fixture in Embodiment 3 of the present utility model;

[0025] Figure 8 is an installation schematic diagram of the glass tube melting and sealing fixture in Embodiment 3 of the present utility model.

[0026] Among them, 1: fixture base; 2: spindle mounting block; 3: fixture spindle; 4: friction sleeve; 5: bearing; 6: glass tube part; 7: fastening nut; 8: positioning rod; 9: positioning bolt; 11: groove; 12: screw hole; 13: conveying device; 21: vertical through hole; 31: positioning rod mounting hole; 41: glass tube mounting hole; 42: driving device; 81: spring; 82: lower limit adjusting plate; 91: clamping device. Specific embodiments

[0027] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0029] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly. The described connection can be a direct connection or an indirect connection.

[0030] In addition, in the present invention, descriptions such as "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of these features.

[0031] In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on what can be achieved by those of ordinary skill in the art. When the combination of technical solutions results in contradictions or cannot be achieved, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention. Embodiment 1

[0032] As Figure 1 shown, it is a structural schematic diagram of a glass tube melting and sealing fixture provided in this embodiment. In this embodiment, the glass tube melting and sealing fixture includes: a fixture base 1, a spindle mounting block 2, a fixture spindle 3, and a friction sleeve 4.

[0033] Among them, the glass tube sealing fixture provided in this embodiment can be applied to a laser sealing machine. The laser sealing machine is provided with a laser and can focus on a fixed focal point. The glass tube sealing fixture provided in this embodiment can transport the glass tube part 6 so that the end of the glass tube part 6 to be sealed is located at the position of the focal point. Generally, a driving device is provided on the laser sealing machine to rotate the glass tube part 6 around the axis, so that the laser heats the glass tube part 6 more evenly. In this embodiment, the friction sleeve 4 is used to install the glass tube part 6 and cooperate with the driving device on the laser sealing machine to obtain the kinetic energy required for rotation through frictional transmission. Preferably, the driving device can include a motor, a friction wheel and a moving mechanism. When the glass tube part 6 moves to the focal point, the moving mechanism drives the friction wheel to contact the friction sleeve 4, and the motor drives the friction wheel to rotate, so that the friction sleeve 4 starts to rotate, thereby realizing the rotational movement of the glass tube part 6.

[0034] As Figure 2 shown, it is a cross-sectional view of the glass tube sealing fixture. The main shaft mounting block 2 is fixedly installed on the fixture base 1. A vertical through hole 21 is opened on the main shaft mounting block 2, and the fixture main shaft 3 is installed in the vertical through hole 21 through a bearing 5.

[0035] Among them, the fixture base 1 is used to carry other components and can be connected to the laser sealing machine. Preferably, the fixture base 1 is fixed on the conveying device and sequentially conveyed to the feeding station and the processing station to improve the efficiency of the laser sealing machine. The main shaft mounting block 2 is used to install the fixture main shaft 3. The vertical through hole 21 is a stepped hole, provided with a part for installing the bearing 5. The bearing 5 can make the fixture main shaft 3 rotate around the axis with a smaller driving force and fix the position of the fixture main shaft 3 axially.

[0036] The friction sleeve 4 is provided with a glass tube mounting hole 41 along the axis and is sleeved on the upper end of the fixture main shaft 3 through the lower end of the glass tube mounting hole 41. The upper end of the glass tube mounting hole 41 is used to install the glass tube part 6 and has a clearance fit with the glass tube part 6; the outer peripheral surface of the friction sleeve 4 is a friction surface, and the friction surface is used to receive the frictional force for self-rotation and drive the glass tube part 6 to rotate.

[0037] Among them, the friction sleeve 4 is a cylinder, and the glass tube mounting hole 41 is a stepped hole. The lower end thereof is provided with a hole section for mounting the fixture main shaft 3. The upper end of the fixture main shaft 3 is fixed to the lower end of the glass tube mounting hole 41 and can be fixed by a pin. The above mounting method can make the friction sleeve 4 and the fixture main shaft 3 coaxial, thereby improving the rotational stability. The fixture main shaft 3 is mounted on the fixture base 1 through a bearing 5 and is prone to rotational movement when receiving a tangential force. The glass tube mounting hole 41 has a clearance fit with the glass tube part 6, and the glass tube part 6 is generally light. Therefore, when the friction sleeve 4 rotates, it can easily drive the glass tube part 6 to rotate together, so that the periphery of the glass tube part 6 can be evenly irradiated by the laser, improving the sealing effect of the glass tube part 6. The outer peripheral surface of the friction sleeve 4 is a friction surface, and the friction surface can be made of a material with a relatively large coefficient of friction, such as rubber, etc. During use, a frictional force along the tangent direction of the friction surface can be provided to the friction surface through a friction wheel, so that the friction sleeve 4 drives the glass tube part 6 to rotate.

[0038] In this embodiment, mounting the glass tube part 6 on the fixture can save the time for loading and unloading and improve the efficiency of laser sealing. This embodiment does not need to set a main shaft connected to the glass tube part 6. By applying a tangential frictional force to the outer peripheral surface of the friction sleeve 4, the glass tube part 6 can be driven to rotate, reducing the positioning and mounting cost and improving the working efficiency. Embodiment 2

[0039] As Figure 3 shown, it is a schematic structural diagram of the glass tube sealing fixture in this embodiment, and Figure 4 shown, it is a cross-sectional view of the glass tube sealing fixture in this embodiment. In this embodiment, the fixture base 1 is provided with a groove 11 below the main shaft mounting block 2, and the main shaft mounting block 2 straddles above the groove 11. The lower end of the fixture main shaft 3 extends into the groove 11, and a fastening nut 7 is installed at the lower end of the fixture main shaft 3.

[0040] Among them, opening the groove 11 on the fixture base 1 can accommodate the fixture main shaft 3 to extend into the groove 11, so that the fixture main shaft 3 can extend into the groove 11, increasing the length of the fixture main shaft 3. The upper and lower ends of the vertical through hole 21 can be provided with hole sections for installing the bearing 5, and one bearing 5 is installed respectively to make the fixture main shaft 2 more stable. The bearing 5 in this embodiment includes but is not limited to a deep groove ball bearing, a tapered roller bearing or an angular contact bearing. Increasing the length of the fixture main shaft 3 and using two bearings 5 in this embodiment can further improve the rotational stability of the fixture main shaft 3. The lower end of the fixture main shaft 3 can be provided with an external thread to facilitate the installation of the fastening nut 7. The fastening nut 7 can fix the bearing 5 in the counterbore in the axial direction, thereby fixing the fixture main shaft 3 in the axial direction and determining the height of the fixture main shaft 3, so that the laser can be focused on the top of the glass tube part 6. Embodiment 3

[0041] As shown Figure 5 in the figure, it is a schematic installation diagram of the positioning rod in this embodiment. In this embodiment, the fixture spindle 3 is axially provided with a positioning rod installation hole 31, and the positioning rod installation hole 31 communicates with the glass tube installation hole 41. A positioning rod 8 is installed in the positioning rod installation hole 31, and the positioning rod 8 is used for axially positioning the glass tube part 6 installed in the glass tube installation hole 41.

[0042] Among them, the top end of the positioning rod 8 can extend into the glass tube installation hole 41 to contact the bottom of the glass tube part 6. By controlling the height of the positioning rod 8, the depth of the glass tube part 6 entering the glass tube installation hole 41 can be controlled, so as to realize the axial positioning of the glass tube part 6. The position of the positioning rod 8 is adjustable, so that this embodiment can install glass tube parts 6 with different lengths, improving the versatility of this embodiment. Further, different friction sleeves 4 can be replaced to change the diameter of the glass tube installation hole 41, further improving the versatility of this embodiment.

[0043] In this embodiment, a collar is provided in the middle of the positioning rod 8, the positioning rod installation hole 31 is a stepped hole, and a spring 81 is installed between the collar and the stepped surface of the stepped hole.

[0044] Among them, installing the spring 81 can reduce the impact between the positioning rod 8 and the glass tube part 6 and prevent the glass tube part 6 from being damaged. A vertical limit structure of the positioning rod 8 can also be provided in the positioning rod 8 or the positioning rod installation hole 31 to prevent the positioning rod 8 from falling out of the positioning rod installation hole 31.

[0045] As shown Figure 6 in the figure, it is a cross-sectional view of the glass tube sealing fixture in this embodiment. In this embodiment, it further includes a lower limit adjusting plate 82 installed at the bottom of the groove 11; the lower limit adjusting plate 82 is used to contact the lower end of the positioning rod 8 to determine the lower limit position of the positioning rod 8.

[0046] Among them, the lower limit adjusting plate 82 can contact the lower end of the positioning rod 8, thereby preventing the positioning rod 8 from moving downward further and determining the lower limit position of the positioning rod 8. When the length of the positioning rod 8 is fixed, adjusting the height of the lower limit adjusting plate 82 can determine the limit position of the positioning rod 8, so as to axially position the glass tube part 6. Preferably, a blind hole for accommodating the positioning rod 8 can be provided on the lower limit adjusting plate 82 to prevent the positioning rod 8 from shifting.

[0047] In this embodiment, the lower limit adjusting plate 82 is fixed to the bottom of the groove 11 by two bolts with different helix directions.

[0048] Among them, two screws with different rotation directions can play a locking role to prevent the lower limit adjusting plate 82 from moving in the vertical direction and improve stability. Preferably, the positions of the two bolts are staggered from the main shaft mounting block 2 so that there is no obstruction above the two bolts, so that the two bolts can be directly adjusted during use without disassembling the main shaft mounting block 2, thereby improving convenience.

[0049] In this embodiment, the fixture base 1 has two layers. The lower layer is provided with screw holes 12 for fixing the fixture base 1. The upper layer is equipped with a positioning structure for positioning the fixture base 1.

[0050] Among them, the fixture base 1 can be fixed on the conveying device. The conveying device includes but is not limited to a conveyor belt. A plurality of fixture bases 1 can be installed on one conveyor belt, and a glass tube loading station, a laser fusion sealing station, and a blanking station are sequentially arranged along the conveying direction of the conveyor belt to improve the continuity of the fusion sealing process of the glass tube parts 6, thereby improving the processing efficiency. The positioning structure positions the fixture base 1, thereby realizing the positioning of the glass tube parts 6 and improving the accuracy of laser fusion sealing. The positioning structure can be but does not include a positioning block. The positioning structure can cooperate with other mechanisms on the laser fusion sealing machine for positioning, and can calibrate the focus of the laser or the position of the glass tube parts 6 so that its focus is aligned with the position to be fused of the glass tube parts 6. The fixture base 1 being divided into upper and lower layers can increase the overall thickness, facilitate the opening of the groove 11 and the installation of the lower limit adjusting plate 82.

[0051] As Figure 7 shown, it is a schematic structural diagram of the glass tube fusion sealing fixture in this embodiment. In this embodiment, the positioning structure is positioning bolts 9 arranged on both sides of the friction sleeve 4, and the circumferential surface of the head of the positioning bolt 9 is the positioning surface.

[0052] Among them, the relative positions of the positioning bolts 9 and the glass tube parts 6 installed on the glass tube fusion sealing fixture are fixed. During use, the clamping device 91 can be used to clamp the heads of the two positioning bolts 9 to complete the position correction of the fixture base 1 and realize the positioning of the glass tube parts 6. As Figure 8As shown in the figure, it is an installation schematic diagram of the glass tube sealing fixture provided by this embodiment. In this embodiment, the conveying device 13 is a conveyor belt device, and the fixture seat 1 is fixed on the conveyor belt through the lower layer of screw holes 12, enabling the glass tube sealing fixture provided by this embodiment to move cyclically on the conveyor belt. Clamping devices 91 and driving devices 42 are arranged on both sides of the conveying device 13. The driving device 42 includes a motor, a pulley, and a friction wheel. The motor drives the pulley to rotate and drives the friction wheel to rotate through a belt. The entire driving device 42 can move perpendicular to the conveying device 13, enabling the friction wheel to contact the friction sleeve 4 and transmit kinetic energy to the friction sleeve 4. The clamping device 91 includes a clamping block that can move perpendicular to the conveying device 13, and the head of the positioning bolt 9 is clamped by the clamping block. The clamping block can have a V-shaped groove, and the V-shaped groove can cooperate with the circumferential surface of the head of the positioning bolt 9 to improve the positioning accuracy.

[0053] In this embodiment, a chamfer is provided at the entrance of the glass tube installation hole 41.

[0054] Among them, providing a chamfer at the entrance of the glass tube installation hole 41 can facilitate the installation of the glass tube part 6 and make it easier to achieve automatic feeding.

[0055] In this embodiment, a rubber coating is applied to the outer peripheral surface of the friction sleeve 4.

[0056] Among them, the rubber coating can increase the roughness of the outer peripheral surface of the friction sleeve 4, making it easier for the friction sleeve 4 to be subjected to frictional force and rotate. Preferably, the rubber coating can be polished to further improve the roughness of the outer peripheral surface. The rubber coating can be wear-resistant rubber to further improve the service life of the friction sleeve 4.

[0057] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural or equivalent process transformations made by using the content of the specification and drawings of the present invention, or directly or indirectly applied to other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. A glass tube melting and sealing jig, characterized in that: include: A fixture seat (1), a spindle mounting block (2), a fixture spindle (3) and a friction sleeve (4); The spindle mounting block (2) is fixedly mounted on the fixture seat (1); a vertical through hole (21) is provided on the spindle mounting block (2); and the fixture spindle (3) is mounted in the vertical through hole (21) via a bearing (5); The friction sleeve (4) is provided with a glass tube mounting hole (41) along the axis, and is sleeved on the upper end of the fixture main shaft (3) through the lower end of the glass tube mounting hole (41); the upper end of the glass tube mounting hole (41) is used to mount a glass tube part (6) and is clearance-matched with the glass tube part (6); the outer peripheral surface of the friction sleeve (4) is a friction surface, and the friction surface is used to receive friction force to rotate and drive the glass tube part (6) to rotate.

2. The glass tube melting and sealing jig according to claim 1, characterized in that: The fixture seat (1) is provided with a groove (11) below the spindle mounting block (2), and the spindle mounting block (2) is arranged across the groove (11); the lower end of the fixture spindle (3) extends into the groove (11), and a fastening nut (7) is installed at the lower end of the fixture spindle (3).

3. The glass tube melting and sealing jig according to claim 2, characterized in that: The fixture main shaft (3) is provided with a positioning rod mounting hole (31) along the axis, the positioning rod mounting hole (31) is communicated with the glass tube mounting hole (41), a positioning rod (8) is mounted in the positioning rod mounting hole (31), and the positioning rod (8) is used to axially position a glass tube part (6) mounted in the glass tube mounting hole (41).

4. The glass tube melting and sealing jig according to claim 3, characterized in that: A shaft collar is provided in the middle of the positioning rod (8); the positioning rod mounting hole (31) is a stepped hole; and a spring (81) is installed between the shaft collar and the stepped surface of the stepped hole.

5. The glass tube melting and sealing jig according to claim 4, characterized in that: It also includes a lower limit adjustment plate (82) installed at the bottom of the groove (11); the lower limit adjustment plate (82) is used to contact the lower end of the positioning rod (8) to determine the lower limit position of the positioning rod (8).

6. The glass tube melting and sealing jig according to claim 5, characterized in that: The lower limit adjustment plate (82) is fixed to the bottom of the groove (11) by two bolts with different rotation directions.

7. The glass tube melting and sealing jig according to claim 1, characterized in that: The clamp seat (1) has two layers, the lower layer is provided with screw holes (12) for fixing the clamp seat (1); and the upper layer is provided with a positioning structure for positioning the clamp seat (1).

8. The glass tube melting and sealing jig according to claim 7, characterized in that: The positioning structure is a positioning bolt (9) arranged on both sides of the friction sleeve (4), and the circumferential surface of the head of the positioning bolt (9) is a positioning surface.

9. The glass tube melting and sealing jig according to claim 1, characterized in that: The entrance of the glass tube installation hole (41) is provided with a chamfer.

10. The glass tube melting and sealing jig according to claim 1, characterized in that: The outer peripheral surface of the friction sleeve (4) is coated with a rubber coating.

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