CN108585455B - Welding machine for glass tube and exhaust tail tube - Google Patents
Welding machine for glass tube and exhaust tail tube Download PDFInfo
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- CN108585455B CN108585455B CN201711498058.3A CN201711498058A CN108585455B CN 108585455 B CN108585455 B CN 108585455B CN 201711498058 A CN201711498058 A CN 201711498058A CN 108585455 B CN108585455 B CN 108585455B
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B23/00—Re-forming shaped glass
- C03B23/20—Uniting glass pieces by fusing without substantial reshaping
- C03B23/207—Uniting glass rods, glass tubes, or hollow glassware
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Abstract
A welding machine for glass tube and exhaust tail tube is composed of machine frame, welding head, clamping unit with glass tube holder, the first clamping unit for clamping glass tube and putting it on glass tube holder, the second clamping unit for clamping glass tube and lifting it vertically, and the welding head consisting of the first welding head and the second welding head for fusing the welding mouth on the lower part of one end of glass tube The clamping device and the welding head are connected with the control circuit through lines. The advantages are that: the automatic operation can be realized, and the welding precision is high.
Description
Technical Field
The invention relates to the technical field of glass tube manufacturing, in particular to a welding machine for a glass tube and an air exhaust tail tube.
Background
The invention discloses a double-glass tube welding device, which is disclosed in the prior Chinese patent with the application number of CN201510077701.X named as a double-glass tube welding device. Compared with the prior art, the invention has the advantages of full automation and stable quality of double glass tube welding. However, the present invention has low welding efficiency, and the clamp of the welding device cannot pull the glass tubes welded together at the welding position to form a glass tube bump, which cannot meet the welding requirement, so that further improvement of the welding device is necessary.
Disclosure of the invention
The invention aims to solve the technical problem of providing a welding machine which is accurate in welding precision and high in machining efficiency and is operated in a full automation degree aiming at the current situation of the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows: this glass pipe and welding machine of tail pipe of bleeding, including the frame, can heat the soldered connection of glass pipe, can press from both sides the clamping device of glass pipe, its characterized in that: the frame is provided with a glass tube bracket, two sides of the glass tube bracket are respectively provided with a limiting part which can seal the end part of the glass tube and introduce air into the inner cavity of the glass tube, a conveying device capable of conveying the glass tube and the glass interface tube to the clamping device is arranged on the outer side of the limiting part, the clamping device comprises a first clamping part which can clamp the glass tube and is placed on the glass tube bracket and a second clamping part which can clamp the glass interface tube and lift and rotate the glass interface tube along the vertical direction, the welding head comprises a first welding head and a second welding head which can melt a welding port at the lower part of one end of the glass tube, the second clamping part vertically rotates the clamped glass interface tube, the end part of the glass interface tube is matched with the welding port, and then the first welding head welds the end parts of the glass tube and the glass interface tube together, the limiting part, the conveying device, the clamping device and the welding head are respectively connected with a control circuit through lines.
As the improvement, spacing portion includes spacing seat, seal baffle, can drive seal baffle and remove the seal baffle driving motor who removes about the relative spacing seat of seal baffle, seal baffle is connected with seal baffle driving motor, seal baffle driving motor sets up the upper portion at spacing seat, when seal baffle driving motor promotes seal baffle and removes and the top touches on the glass pipe, the end opening of seal baffle sealed glass pipe, seal baffle's middle part is provided with the blow vent, the blow vent is linked together through pipeline and air-blower.
As a refinement, the conveying device comprises a first conveying device for conveying the glass tube and a second conveying device for conveying the glass interface tube.
The improved glass tube conveying device is characterized in that the first conveying device comprises an outer frame body and an inner frame body, the outer frame body and the inner frame body can be used for supporting a glass tube, the inner frame body is driven to move up and down relative to the outer frame body through a first driving cylinder, the inner frame body is driven to move back and forth relative to the outer frame body through a second driving cylinder, the inner frame body is arranged in an opening in the middle of the outer frame body, the second driving cylinder is arranged on the bottom surface of the outer frame body, a cylinder push rod of the second driving cylinder is connected with the first driving cylinder of the inner frame body, and the first cylinder push rod of the first driving cylinder of the inner frame body is fixed with the bottom surface of the inner frame body.
The second conveying device comprises a storage hopper for storing the glass interface tubes and a conveying plate which can move left and right relative to the storage hopper and move the glass interface tubes in the storage hopper to the outside of the storage hopper, a strip-shaped opening through which a single glass interface tube can pass is formed in the bottom of the storage hopper, a movable door for opening or closing the strip-shaped opening is arranged on the strip-shaped opening, the conveying plate is arranged on the lower portion of the storage hopper, one end of the conveying plate is connected with a conveying plate driving motor capable of driving the conveying plate to move left and right, and a concave portion capable of being embedded into the single glass interface tube is formed in the upper surface of the conveying plate.
As an improvement, first clamping part is including rotating the seat, and first clamp head can rotate on rotating the seat and press from both sides the first rotation pole that the head removed in first conveyor and glass pipe support top, the one end of first rotation pole is provided with the lift portion that can drive first clamp head and reciprocate first rotation pole relatively, lift portion is connected with the first clamp seat that presss from both sides the head, the both sides of first clamp seat are provided with respectively and can move in opposite directions and press from both sides tight glass pipe or move mutually and put away the first clamp plate of glass pipe mutually.
As an improvement, the second clamping part comprises a second clamping head and a vertical driving rod, and a second rotating rod capable of rotating relative to the vertical driving rod is arranged on a second clamping part fixing frame in a way that the vertical driving rod can move up and down relative to the glass tube support, one end of the second rotating rod can be rotatably arranged at the end part of the vertical driving rod, the other end of the second rotating rod is connected with a second clamping seat of the second clamping head, and two sides of the second clamping seat are respectively provided with a second clamping splint capable of moving in opposite directions to clamp the glass interface tube or moving back to release the glass interface tube.
As an improvement, a first transverse moving rod capable of moving back and forth relative to the second clamping portion fixing frame is arranged on the second clamping portion fixing frame, the first transverse moving rod is linked with a first transverse moving rod driving motor, a first moving slide rail is arranged on the bottom surface of the first transverse moving rod, a first moving slide block capable of moving left and right along the first moving slide rail is arranged on the first moving slide rail, a second transverse moving rod is arranged on the first moving slide block, a second moving slide rail is arranged on the side wall of the second transverse moving rod, a second moving slide block capable of moving up and down along the second moving slide rail is arranged on the second moving slide rail, and the second moving slide block is connected with the end portion of the vertical driving rod.
As an improvement, the second welding head is connected with one end of a third rotating rod, the other end of the third rotating rod is connected with a third rotating rod driving motor, and the third rotating rod driving motor is fixed on the side wall of the limiting seat.
As an improvement, the first welding head is an integral structure formed by oppositely arranging arc-shaped flame-throwing heads, one end of the integral structure is provided with a welding head gap capable of passing through the glass interface tube, the other end of the integral structure is connected with a welding head driving rod for driving the first welding head to rotate by taking a central shaft of the glass interface tube as a circle center, the welding head driving rod is rotatably connected with a driving rod driving seat, a driving slide block is arranged at the bottom of the driving rod driving seat, and the driving slide block can be arranged on a driving seat slide rail at the bottom of the frame in a back-and-forth movement mode.
Compared with the prior art, the welding machine for the glass tube and the exhaust tail tube adopts the structure that the glass tube support is arranged on the machine frame, the two sides of the glass tube support are respectively provided with the limiting parts which can seal the end part of the glass tube and lead air into the inner cavity of the glass tube, the outer side of the limiting parts is provided with the conveying device which can convey the glass tube and the glass interface tube to the clamping device, the clamping device comprises a first clamping part which can clamp the glass tube and is arranged on the glass tube support and a second clamping part which can clamp the glass tube and lift and rotate the glass interface tube along the vertical direction, the welding head comprises a first welding head and a second welding head which can melt a welding port at the lower part of one end of the glass tube, the second clamping part vertically rotates the clamped glass interface tube and enables the end part of the glass interface tube to be matched with the welding port, and then the first welding head welds the end part of the glass tube and the, spacing portion, conveyor, clamping device and soldered connection are connected with control circuit through the circuit respectively, and the advantage of this kind of structure lies in: the limiting part, the conveying device, the clamping device and the welding head are respectively connected with the control circuit through lines, input, involution and welding of the glass tube and the glass interface tube are fully automatically realized, the automation degree is high, the precision is high, the welding efficiency is high, and the welding effect is good; the second clamping part can vertically move the glass interface tube, when air is introduced into the inner cavity of the glass tube, the second clamping part can pull the glass interface tube downwards, so that a glass tube bulge is formed at the joint of the glass tube and the glass interface tube downwards, and the effect of buffering gas is achieved, so that the service life of the welded glass tube is longer, and the processing requirement of glass tube welding is met; the sealing at glass pipe both ends can be guaranteed to spacing portion, avoid the air excessive, make the air only leave the glass pipe from the welding mouth that the second welding head melts, improve blast efficiency, can also play the effect of imitate glass pipe operational environment, the glass pipe arch of formation can accord with the design requirement better, and in addition, spacing portion firmly presss from both sides tightly the both ends of glass pipe, avoids the glass pipe to rock, and welded connection department levels beautifully when welding like this, and welding effect is good, effectively reduces the defective percentage.
Drawings
FIG. 1 is a perspective view of an embodiment of the present invention;
FIG. 2 is a perspective view of the glass tube of FIG. 1 after being placed on the glass tube holder with the blower removed;
FIG. 3 is a perspective view of FIG. 2 at another angle;
FIG. 4 is a perspective view of the glass tube of FIG. 2 after attachment to the glass interface tube;
FIG. 5 is a perspective view of the first weld joint of FIG. 4;
FIG. 6 is a perspective view of FIG. 5 at another angle;
FIG. 7 is an enlarged view of portion I of FIG. 1;
fig. 8 is an enlarged view of a portion II in fig. 3.
Detailed Description
The present invention will be described in further detail with reference to examples.
As shown in fig. 1 to 8, the welding machine for a glass tube and an exhaust tail tube of the present embodiment includes a frame 1, a welding head capable of heating the glass tube 2, and a clamping device capable of clamping the glass tube 2, wherein a glass tube support 11 is disposed on the frame 1, two sides of the glass tube support 11 are respectively provided with a limiting portion capable of sealing an end portion of the glass tube 2 and introducing air into an inner cavity of the glass tube, a conveying device capable of conveying the glass tube 2 and a glass interface tube 41 to the clamping device is disposed outside the limiting portion, the clamping device includes a first clamping portion capable of clamping the glass tube 2 and placing on the glass tube support 11, and a second clamping portion capable of clamping and lifting and rotating the glass interface tube 41 in a vertical direction, the welding head includes a first welding head 51 and a second welding head 61 capable of melting out a welding opening 21 at a lower portion of one end of the glass tube 2, and the second clamping portion vertically rotates the clamped glass interface tube 41 and closes an end portion of the glass interface tube 41 to the welding opening 21, and then is welded by the The first welding head 51 welds the end parts of the glass tube 2 and the glass interface tube 41 together, and the limiting part, the conveying device, the clamping device and the welding head are respectively connected with the control circuit through lines. Spacing portion includes spacing seat 3, seal baffle 31, can drive seal baffle 31 and remove about spacing seat 3 relatively seal baffle driving motor, seal baffle 31 is connected with seal baffle driving motor, seal baffle driving motor sets up the upper portion at spacing seat 3, when seal baffle driving motor promotes seal baffle 31 and removes and the top touches on glass pipe 2, seal baffle 31 seals the tip opening of glass pipe 2, seal baffle 31's middle part is provided with the blow vent, the blow vent is linked together through pipeline and air-blower 32. The conveying device comprises a first conveying device for conveying the glass tube 2 and a second conveying device for conveying the glass interface tube 41. First conveyor is including the outer support body 7, the inner support body 71 that can erect glass pipe 2, and the first actuating cylinder 72 that drives of inner support body that drives inner support body 71 and reciprocate relatively outer support body 7 drives the cylinder 73 for the first inner support body second that drives actuating cylinder 72 and relatively outer support body 7 back-and-forth movement of drive inner support body, inner support body 71 sets up in the middle part opening of outer support body 7, the inner support body second drives actuating cylinder 73 and sets up on the bottom surface of outer support body 7, the inner support body second drives actuating cylinder 73's cylinder catch bar and is connected with the first actuating cylinder 72 that drives of inner support body, the first cylinder catch bar that drives actuating cylinder 72 of inner support body is fixed mutually with the bottom surface of inner support body 71. The second conveying device comprises a storage bucket 4 for storing the glass interface tube 41 and a conveying plate 42 which can move left and right relative to the storage bucket 4 to move the glass interface tube 41 in the storage bucket 4 to the outside of the storage bucket 4, the bottom of the storage bucket 4 is provided with a strip-shaped opening through which the single glass interface tube 41 can pass, a moving door for opening or closing the strip-shaped opening is arranged on the strip-shaped opening, the conveying plate 42 is arranged at the lower part of the storage bucket 4, one end of the conveying plate 42 is connected with a conveying plate driving motor capable of driving the conveying plate 42 to move left and right, and a concave part 43 capable of being embedded into the single glass interface tube 41 is arranged on the upper surface of the conveying plate 42. First clamping part is including rotating seat 8, and first clamp head can rotate on rotating seat 8 and with first clamp head first rotation pole 81 of removing in first conveyor and glass pipe support 11 top, the one end of first rotation pole 81 is provided with the lift portion that can drive first clamp head and first rotation pole 81 relatively and reciprocate, lift portion is connected with the first tight seat 82 of clamp of first clamp head, the both sides of first clamp seat 82 are provided with respectively and can move in opposite directions and press from both sides tight glass pipe 2 or move on the back and relieve the tight splint 83 of first clamp of glass pipe 2 mutually. The second clamping part comprises a second clamping head, a vertical driving rod 91 and a second rotating rod 92 capable of rotating relative to the vertical driving rod 91, the vertical driving rod 91 can be arranged on the second clamping part fixing frame 9 in a manner of moving up and down relative to the glass tube support 11, one end of the second rotating rod 92 can be rotatably arranged at the end part of the vertical driving rod 91, the other end of the second rotating rod 92 is connected with a second clamping seat 93 of the second clamping head, and two sides of the second clamping seat 93 are respectively provided with a second clamping clamp plate 94 capable of moving in opposite directions to clamp the glass interface tube 41 or moving back to release the glass interface tube 41. The clamping device is characterized in that a first transverse moving rod 95 capable of moving back and forth relative to the second clamping portion fixing frame 9 is arranged on the second clamping portion fixing frame 9, the first transverse moving rod 95 is linked with a first transverse moving rod driving motor, a first moving slide rail is arranged on the bottom surface of the first transverse moving rod 95, a first moving slide block capable of moving left and right along the first moving slide rail is arranged on the first moving slide rail, a second transverse moving rod 96 is arranged on the first moving slide block, a second moving slide rail is arranged on the side wall of the second transverse moving rod 96, a second moving slide block capable of moving up and down along the second moving slide rail is arranged on the second moving slide rail, and the second moving slide block is connected with the end portion of the vertical driving rod 91. The second welding head 61 is connected with one end of the third rotating rod 6, the other end of the third rotating rod 6 is connected with a third rotating rod driving motor, and the third rotating rod driving motor is fixed on the side wall of the limiting seat 3. The first welding head 51 is an integral structure formed by oppositely arranging arc-shaped flame-throwing heads, one end of the integral structure is provided with a welding head gap 52 capable of passing through the glass interface tube 41, the other end of the integral structure is connected with a welding head driving rod 53 for driving the first welding head 51 to rotate by taking the central shaft of the glass interface tube 41 as a circle center, the welding head driving rod 53 is rotatably connected with the driving rod driving seat 5, the bottom of the driving rod driving seat 5 is provided with a driving slide block, and the driving slide block is arranged on a driving seat slide rail 54 at the bottom of the frame 1 in a back-and-forth movement mode.
The working principle is as follows: the first conveying device conveys the glass tubes to the lower part of the first clamping part in sequence, the first clamping part clamps the glass tubes on the first conveying device and places the glass tube frame on a glass tube support of the frame, sealing baffles of limiting parts at two sides of the glass tube support move oppositely to seal openings at two ends of the glass tubes, a second welding head is rotated to enable a flame nozzle of the second welding head to align to the lower part of one end of the glass tube and melt out a welding opening at the position, the second conveying device conveys the glass interface tubes to the lower part of the second clamping part, the second clamping part erects and moves the horizontally placed glass interface tubes to the lower part of the welding opening, the glass interface tubes moving to the lower part of the welding opening move upwards to enable one end of the glass interface tubes to be connected with the welding opening, the first welding head moves to the joint of the glass tube and the glass tube, the first welding head heats the joint and introduces gas into a vent on the sealing baffles, and the second clamping part pulls the glass interface tube downwards to form a connecting bulge at the joint of the glass interface tube and the glass tube, and the glass tube after being welded is stored for standby use to process the next glass tube.
Claims (9)
1. The utility model provides a glass pipe and welding machine of tail pipe of bleeding, includes frame (1), can heat the soldered connection of glass pipe (2), can press from both sides the clamping device of glass pipe (2), its characterized in that: the glass tube welding machine is characterized in that a glass tube support (11) is arranged on the rack (1), limiting parts capable of sealing the end parts of the glass tube (2) and introducing air into the inner cavity of the glass tube are respectively arranged on two sides of the glass tube support (11), a conveying device capable of conveying the glass tube (2) and the glass interface tube (41) to a clamping device is arranged on the outer side of each limiting part, each clamping device comprises a first clamping part capable of clamping the glass tube (2) and placing the glass tube support (11) and a second clamping part capable of clamping the glass tube (41) and lifting and rotating the glass interface tube (41) along the vertical direction, each welding head comprises a first welding head (51) and a second welding head (61) capable of melting a welding port (21) at the lower part of one end of the glass tube (2), the clamped glass interface tube (41) is vertically rotated by the second clamping part, the end parts of the glass interface tube (41) are combined with the welding port (21) again, and the glass tube (2) and the glass interface tube (41) are combined by the first welding head (51 The end parts are welded together, and the limiting part, the conveying device, the clamping device and the welding head are respectively connected with a control circuit through lines; spacing portion includes spacing seat (3), seal baffle (31), can drive seal baffle (31) and remove about spacing seat (3) relatively seal baffle driving motor, seal baffle (31) are connected with seal baffle driving motor, seal baffle driving motor sets up on the upper portion of spacing seat (3), when seal baffle driving motor promoted seal baffle (31) and removed and the top touches on glass pipe (2), the tip opening of seal baffle (31) sealed glass pipe (2), the middle part of seal baffle (31) is provided with the blow vent, the blow vent is linked together through pipeline and air-blower (32).
2. The welding machine of claim 1, wherein: the conveying device comprises a first conveying device for conveying the glass tube (2) and a second conveying device for conveying the glass interface tube (41).
3. The welding machine of claim 2, wherein: first conveyor is including outer support body (7), the inner support body (71) that can erect glass pipe (2), and the first interior support body that reciprocates of outer support body (7) relatively of drive inner support body (71) drives actuating cylinder (72), and the first interior support body second that drives actuating cylinder (72) and outer support body (7) back-and-forth movement drives actuating cylinder (73) relatively of driving inner support body, inner support body (71) set up in the middle part opening of outer support body (7), inner support body second drives actuating cylinder (73) and sets up on the bottom surface of outer support body (7), the cylinder catch bar that inner support body second drove actuating cylinder (73) is connected with the first actuating cylinder (72) that drives of inner support body, the first cylinder catch bar that drives actuating cylinder (72) of inner support body is fixed mutually with the bottom surface of inner support body (71).
4. The welding machine of claim 2, wherein: the second conveying device comprises a storage bucket (4) for storing the glass interface tube (41) and a conveying plate (42) which can move left and right relative to the storage bucket (4) to move the glass interface tube (41) in the storage bucket (4) to the outside of the storage bucket (4), a long-strip-shaped opening through the single glass interface tube (41) is formed in the bottom of the storage bucket (4), a moving door for opening or closing the long-strip-shaped opening is arranged on the long-strip-shaped opening, the conveying plate (42) is arranged on the lower portion of the storage bucket (4), one end of the conveying plate (42) is connected with a conveying plate driving motor capable of driving the conveying plate (42) to move left and right, and a concave portion (43) capable of being embedded into the single glass interface tube (41) is formed in the upper surface of the conveying plate (42).
5. The welding machine of claim 2, wherein: first clamping part is including rotating seat (8), and first tight head of clamp can rotate on rotating seat (8) and with first tight head of clamp first pivot pole (81) of removal in first conveyor and glass pipe support (11) top, the one end of first pivot pole (81) is provided with the portion of lifting that can drive first tight head of clamp and first pivot pole (81) relatively and reciprocate, the portion of lifting is connected with first tight seat (82) of clamp of first tight head of clamp, the both sides of first tight seat (82) of clamp are provided with respectively can move in opposite directions and press from both sides tight glass pipe (2) or move on the back and relieve the tight splint (83) of first tight splint of glass pipe (2) of clamp.
6. The welding machine of claim 5, wherein: the second presss from both sides tight portion including the second and presss from both sides tight head, vertical actuating lever (91) pivoted second dwang (92) relatively, vertical actuating lever (91) can set up on second clamping portion mount (9) with reciprocating relative glass pipe support (11), the one end of second dwang (92) can set up the tip at vertical actuating lever (91) with rotating, the other end of second dwang (92) presss from both sides tight seat (93) with the second of the tight head of second clamp and is connected, the both sides of the tight seat of second clamp (93) are provided with respectively can move in opposite directions and press from both sides tight glass interface tube (41) or move mutually and carry on the back and press from both sides tight splint (94) of second of releasing glass interface tube (41).
7. The welding machine of claim 6, wherein: the clamping mechanism is characterized in that a first transverse moving rod (95) capable of moving back and forth relative to a second clamping portion fixing frame (9) is arranged on the second clamping portion fixing frame (9), the first transverse moving rod (95) is linked with a first transverse moving rod driving motor, a first moving slide rail is arranged on the bottom surface of the first transverse moving rod (95), a first moving slide block capable of moving left and right along the first moving slide rail is arranged on the first moving slide rail, a second transverse moving rod (96) is arranged on the first moving slide block, a second moving slide rail is arranged on the side wall of the second transverse moving rod (96), a second moving slide block capable of moving up and down along the second moving slide rail is arranged on the second moving slide rail, and the second moving slide block is connected with the end portion of the vertical driving rod (91).
8. The welding machine of claim 1, wherein: the second welding head (61) is connected with one end of a third rotating rod (6), the other end of the third rotating rod (6) is connected with a third rotating rod driving motor, and the third rotating rod driving motor is fixed on the side wall of the limiting seat (3).
9. The welding machine of claim 8, wherein: the first welding head (51) is an integral structure formed by oppositely arranging arc-shaped flame-throwing heads, one end of the integral structure is provided with a welding head gap (52) capable of passing through the glass interface tube (41), the other end of the integral structure is connected with a welding head driving rod (53) for driving the first welding head (51) to rotate by taking the central shaft of the glass interface tube (41) as a circle center, the welding head driving rod (53) is rotatably connected with a driving rod driving seat (5), a driving slide block is arranged at the bottom of the driving rod driving seat (5), and the driving slide block can be arranged on a driving seat slide rail (54) at the bottom of the rack (1) in a front-back movement mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711498058.3A CN108585455B (en) | 2017-12-28 | 2017-12-28 | Welding machine for glass tube and exhaust tail tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711498058.3A CN108585455B (en) | 2017-12-28 | 2017-12-28 | Welding machine for glass tube and exhaust tail tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108585455A CN108585455A (en) | 2018-09-28 |
| CN108585455B true CN108585455B (en) | 2020-10-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711498058.3A Active CN108585455B (en) | 2017-12-28 | 2017-12-28 | Welding machine for glass tube and exhaust tail tube |
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Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU461906A1 (en) * | 1969-03-31 | 1975-02-28 | Татарский Нефтяной Научно-Исследовательский Институт | Apparatus for making tubular glass blanks |
| CN206375409U (en) * | 2016-12-22 | 2017-08-04 | 杨柳 | A kind of glass tube automatic feed mechanism applied on gas-discharge lamp bulb-tubulating machine |
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