阅读说明：本技术 玻璃热弯炉 (Glass hot bending furnace ) 是由 张然 于 2019-10-17 设计创作，主要内容包括：本发明公开了一种玻璃热弯炉,包括机架、滑动支撑在机架上的物料台车、驱使物料台车移动的驱动装置以及为驱动装置提供动力的动力装置,所述驱动装置包括外形为封闭环形的柔性导轨,所述柔性导轨转动安装在机架上,物料台车与柔性导轨相连接；所述机架沿柔性导轨运转方向设有热弯炉功能区。本发明的玻璃热弯炉改变了外形结构和运行方式,在相同占地面积下具有更多的热弯炉功能区和模砖,有效提高玻璃热弯效率。(The invention discloses a glass hot bending furnace, which comprises a rack, a material trolley, a driving device and a power device, wherein the material trolley is slidably supported on the rack, the driving device drives the material trolley to move, and the power device provides power for the driving device; the frame is provided with a hot bending furnace functional area along the running direction of the flexible guide rail. The glass hot bending furnace changes the appearance structure and the operation mode, has more hot bending furnace functional areas and mold bricks under the same floor area, and effectively improves the glass hot bending efficiency.)

1. A glass hot bending furnace is characterized in that: the device comprises a rack (1), a material trolley (2) which is slidably supported on the rack (1), a driving device (3) for driving the material trolley (2) to move and a power device (4) for providing power for the driving device (3), wherein the driving device (3) comprises a flexible guide rail which is in a closed ring shape, the flexible guide rail is rotatably arranged on the rack (1), and the material trolley (2) is connected with the flexible guide rail; the frame (1) is provided with a hot bending furnace functional area along the running direction of the flexible guide rail.

2. The glass bending furnace according to claim 1, wherein: the flexible guide rail is chain guide (31), drive arrangement (3) still include that horizontal rotation installs driving fluted disc (32) and driven fluted disc (33) on frame (1), chain guide (31) cover is established on the outer flank of tooth of driving fluted disc (32) and driven fluted disc (33), is connected with driving fluted disc (32), driven fluted disc (33) meshing.

3. The glass bending furnace according to claim 2, wherein: the power device (4) is selected as a variable frequency motor, and the power device (4) is in transmission connection with the driving fluted disc (32).

4. The glass bending furnace according to claim 1, wherein: the material trolley (2) comprises a chassis (21), universal wheels (22) arranged on the lower surface of the chassis (21), a support rod (23) vertically fixed on the upper surface of the chassis (21), and a tray (24) fixedly connected to the upper end of the support rod (23), wherein a mold brick bottom brick (25) is arranged on the tray (24); the bottom of the chassis (21) is vertically and fixedly connected with a connecting plate (26), the side wall of the connecting plate (26) is provided with two connecting pieces (27) and two hinge pieces (28), the connecting pieces (27) are horizontally fixed on the side wall of the connecting plate (26), the two connecting pieces (27) are distributed at intervals from top to bottom, the two hinge pieces (28) are also distributed at intervals from top to bottom, and the hinge pieces (28) are hinged on the connecting pieces (27); the connecting sheet (27) and the hinge sheet (28) are respectively hinged on the flexible guide rail.

5. The glass bending furnace according to claim 4, wherein: a vacuum device (70) for providing negative pressure is arranged on the rack (1) and below the material trolley (2), and the vacuum device (70) comprises a linear auxiliary rail (701) fixed on the rack (1), ejection cylinders (703) which are slidably mounted on the linear auxiliary rail (701) and vertically and upwards distributed at the output end of the linear auxiliary rail (701), suckers (705) mounted on the output ends of the ejection cylinders (703) and a negative pressure source for providing negative pressure for the suckers (705);

along the running direction of the material trolley (2), a return cylinder (707) is arranged in front of the linear auxiliary track (701), a damping rubber sleeve (708) is arranged behind the linear auxiliary track (701), and a termination sensor is further arranged on one side of the linear auxiliary track (701);

the material trolley (2) is provided with a negative pressure adsorption structure, the negative pressure adsorption structure comprises a sucker seat (80) positioned below the chassis (21), and the material trolley (2) is provided with an adsorption channel for communicating the sucker seat (80) with the mold brick bottom brick (25); the material trolley (2) is also provided with an induction point, and the rack (1) is provided with an initial sensor matched with the induction point.

6. The glass bending furnace according to any one of claims 1 to 5, wherein: the heat preservation backup pad (11) is fixedly connected to the turning position of the flexible guide rail on the frame (1) respectively, the traveling track (12) is fixedly arranged between the two heat preservation backup pads (11) and along the straight traveling track after the flexible guide rail turns, the traveling track (12) and the heat preservation backup pad (11) are in smooth transition, and the material trolley (2) runs on the heat preservation backup pad (11) and the traveling track (12).

7. The glass bending furnace according to claim 4, wherein: the hot bending furnace functional area comprises a U-shaped feeding area (6), a hot bending area (7), a first straight cooling area (8), a U-shaped discharging area (9) and a second straight cooling area (10), wherein the U-shaped feeding area (6) and the U-shaped discharging area (9) are positioned at the turning position of the flexible guide rail, and the hot bending area (7), the first straight cooling area (8) and the second straight cooling area (10) are distributed along the straight track of the flexible guide rail;

u type feeding interval (6), first cooling interval (8), U type ejection of compact interval (9) and second cooling interval (10) all are equipped with driving passageway (62), hot bending interval (7) are equipped with hot bend passageway (71), driving passageway (62) is linked together with hot bend passageway (71), material platform truck (2) are worn to establish in driving passageway (62) or hot bend passageway (71).

8. The glass bending furnace according to claim 7, wherein: the hot bending area (7) comprises a heat shield (72), the heat shield (72) comprises a bottom plate (721) which is horizontally arranged, side plates (722) which are vertically fixed on two sides of the bottom plate (721), a cover plate (723) which is horizontally fixed on the tops of the side plates (722), an inlet plate (724) and an outlet plate (725), the bottom plate (721), the side plates (722) and the cover plate (723) are enclosed to form an isolation cavity, the inlet plate (724) and the outlet plate (725) are vertically fixed at the inlet end and the outlet end of the isolation cavity respectively, the hot bending channel (71) is arranged inside the heat shield (72), and through holes matched with the hot bending channel (71) are formed in the inlet plate (724) and the outlet plate (725);

a yielding port is formed in a bottom plate (721) of the heat shield (72), the end part of the bottom plate (721) where the yielding port is formed is bent upwards to form a flange (75), a flange angle steel (76) is arranged right above the flange (75), a fixing plate (77) is arranged on one side, facing the yielding port, of the flange (75), one end of the fixing plate (77) is fixedly connected with the baffle (243), and the other end of the fixing plate is fixedly connected with the flange angle steel (76);

the hot bending channel (71) is composed of furnace top bricks (711), furnace side bricks (712) and furnace bottom bricks (713), the furnace bottom bricks (713) are arranged in a double number and are symmetrically distributed on two sides of a abdicating opening of the bottom plate (721), the lower edges of the furnace bottom bricks (713) are abutted with the flanges (75), the upper edges of the furnace bottom bricks (713) are abutted with the edge-protecting angle steel (76), the furnace side bricks (712) are erected on the furnace bottom bricks (713), the furnace top bricks (711) are covered on the furnace side, and the upper surfaces of the furnace bottom bricks (713) are assembly surfaces;

a furnace wire is arranged in the hot bending channel (71).

9. The glass bending furnace according to claim 8, wherein: the tray (24) of the material trolley (2) is rectangular, two sealing plates (242) are fixedly connected to the long edges of the lower surface of the tray (24) vertically, a sealing groove (714) is formed in the assembly surface of a bottom brick (713) of the hot bending channel (71) vertically and downwards, and when the material trolley (2) runs in the hot bending channel (71), the sealing plates (242) are in sliding fit with the sealing groove (714); the broadside level rigid coupling of tray (24) lower surface has baffle (243), baffle (243) surpass tray (24), and can stretch into tray (24) below of adjacent material platform truck (2).

10. The glass bending furnace according to claim 7, wherein: closing member (60) are all installed to the entry end of the interval (6) of U type feeding and the exit end of the interval (9) of U type ejection of compact, closing member (60) are including keeping off frame (601) and setting up flashboard (602) on keeping off frame (601), keep off frame (601) and be the U-shaped, and the opening is fixed downwards on the exit end of the interval (9) of the entry end of the interval (6) of U type feeding or the U type ejection of compact, the horizontal symmetry sets up two screw rods on the lateral surface of keeping off frame (601), corresponding regulation hole (603) have been seted up to vertical on flashboard (602), regulation hole (603) are rectangular form, threaded connection has the nut on the screw rod.

Technical Field

The invention relates to the technical field of glass forming, in particular to a glass hot bending furnace.

Background

The hot bending furnace is a common device for hot bending and forming the glass of the automobile rearview mirror. The conventional hot bending furnace is generally characterized in that a heater is arranged at a certain fixed position above a turntable, a plurality of hot bending dies are arranged on the circumferential edge of the turntable, and when a glass workpiece to be molded is placed on the hot bending dies and is conveyed to the position below the heater, the glass workpiece is heated and molded by the heater. However, the existing hot bending furnace often has the following obvious defects in the practical production application process:

the traditional hot bending furnace is a circular furnace, the number of functional areas of the hot bending furnace and the number of hot bending dies are in direct proportion to the diameter of the hot bending furnace, the larger the diameter of the hot bending furnace is, the more the functional areas and the hot bending dies are, but the larger the space occupied by the corresponding hot bending furnace is; and the furnace bricks of the functional area of the circular furnace are all fan-shaped, so the manufacturing difficulty is high, and the later maintenance is difficult.

Disclosure of Invention

The invention aims to provide a glass hot bending furnace, which changes the appearance structure and the operation mode, has more hot bending furnace functional areas and mold bricks under the same floor area and effectively improves the glass hot bending efficiency.

The above object of the present invention is achieved by the following technical solutions:

a glass hot bending furnace comprises a frame, a material trolley, a driving device and a power device, wherein the material trolley is slidably supported on the frame, the driving device drives the material trolley to move, the power device provides power for the driving device, the driving device comprises a flexible guide rail in a closed annular shape, the flexible guide rail is rotatably installed on the frame, and the material trolley is connected with the flexible guide rail; the frame is provided with a hot bending furnace functional area along the running direction of the flexible guide rail.

By adopting the technical scheme, the flexible guide rail realizes the diversification of the running tracks of the material trolleys, and the traditional standard circular shape can be changed into an oval shape or other shapes, so that the distance between the adjacent material trolleys is reduced, and the material trolleys can be arranged and installed more compactly; correspondingly, the functional areas of the hot bending furnace can be divided more finely. When the glass hot bending furnace works, the power device is operated, then the specific temperature of the functional area is set according to workpieces to be processed of different specifications, the temperature is waited for rising, after the temperature is reached, the material trolley runs at the set speed, the workpieces to be processed are heated and naturally collapse in the functional area, and after cooling forming, the hot bending process is completed through mechanical arms or manual blanking.

The invention is further configured to: the flexible guide rail is a chain guide rail, the driving device further comprises a driving fluted disc and a driven fluted disc which are horizontally and rotatably installed on the rack, and the chain guide rail is sleeved on the outer tooth surfaces of the driving fluted disc and the driven fluted disc and is meshed with the driving fluted disc and the driven fluted disc.

By adopting the technical scheme, the chain guide rail meets the flexible requirement, the chain transmission has the advantages of accurate transmission ratio, large transmission power and strong overload capacity, and the chain transmission can also work in a high-temperature environment, can completely meet the requirement of a transmission structure of the hot bending furnace, and ensures the normal operation of the material trolley.

The invention is further configured to: the power device is a variable frequency motor and is in transmission connection with the driving fluted disc.

By adopting the technical scheme, the variable frequency motor can set the rotating speed according to actual needs, so that the hot bending furnace can carry out hot bending treatment on workpieces to be processed with different specifications, and the universality of the hot bending furnace is improved.

The invention is further configured to: the material trolley comprises a chassis, universal wheels arranged on the lower surface of the chassis, a supporting rod vertically fixed on the upper surface of the chassis, and a tray fixedly connected to the upper end of the supporting rod, wherein a mold brick bottom brick is arranged on the tray; the bottom of the chassis is vertically and fixedly connected with a connecting plate, the side wall of the connecting plate is provided with two connecting pieces and two hinge pieces, the connecting pieces are horizontally fixed on the side wall of the connecting plate, the two connecting pieces are distributed at intervals from top to bottom, the two hinge pieces are also distributed at intervals from top to bottom, and the hinge pieces are hinged on the connecting pieces; the connecting piece and the hinging piece are respectively hinged on the flexible guide rail.

By adopting the technical scheme, before the glass hot bending furnace works, the mold brick corresponding to the workpiece to be machined is installed on the mold brick bottom brick, then the workpiece to be machined is placed on the mold brick, namely, the workpiece to be machined is installed, the power device drives the flexible guide rail to rotate, the material trolley synchronously moves along with the flexible guide rail through the transmission of the connecting lug and the connecting piece, and the hinged piece is used for adjusting the angle of the trolley body of the material trolley and ensuring the smoothness of the material trolley during turning; and each material trolley is an independent individual, so that the fault tolerance rate is high, mutual interference cannot occur during maintenance, and the maintenance is convenient.

The invention is further configured to: a vacuum device for providing negative pressure is arranged below the hot bending section, and the vacuum device comprises a linear auxiliary track fixed on the rack, ejection cylinders which are slidably mounted on the linear auxiliary track and vertically and upwardly distributed at the output end of the linear auxiliary track, suckers mounted on the output ends of the ejection cylinders and a negative pressure source for providing negative pressure for the suckers; a return cylinder is arranged in front of the linear auxiliary track along the running direction of the material trolley, a damping rubber sleeve is arranged behind the linear auxiliary track, and a termination sensor is also arranged on one side of the linear auxiliary track; the material trolley is provided with a negative pressure adsorption structure, the negative pressure adsorption structure comprises a sucker seat positioned below the chassis, and the material trolley is provided with an adsorption channel for communicating the sucker seat with the bottom bricks of the mold bricks; the material trolley is also provided with a sensing point, and the rack is provided with a starting sensor matched with the sensing point.

By adopting the technical scheme, when the material trolley needs a vacuum device to assist in processing deep-curvature products, all elements of the vacuum device are ensured to be in a working state, the working process of the vacuum device is as follows, the material trolley enters a hot bending section, when a sensing point of the material trolley moves to an initial sensor, the initial sensor senses the sensing point and sends a signal, an ejection cylinder starts an ejection action after receiving the signal sent by the initial sensor, namely the ejection cylinder works to push a part connected with a piston rod of the cylinder to move upwards, a sucker continuously performs negative pressure extraction under the action of a negative pressure source, the ejection speed of the piston rod of the ejection cylinder and the operation speed of the material trolley are regulated and controlled, so that the sucker just can correspond to a yielding hole of a sucker seat, and when the sucker abuts against the sucker seat, the sucker is adsorbed on the sucker seat under the action of negative pressure suction force, the products on a brick bottom brick are assisted to be bent, and drives the fixed seat to move synchronously along the I-shaped sliding rail.

When the induction point runs to the termination sensor on the switch board, the termination sensor generates induction, a signal is returned to the ejection cylinder, the piston rod of the ejection cylinder returns to reset, the sucking disc is separated from the sucking disc seat, the termination sensor simultaneously gives a signal to the return cylinder, the piston rod of the return cylinder is ejected, and the fixed seat arranged on the linear auxiliary track returns to the initial position under the action of the piston rod of the return cylinder; in order to prevent the vacuum device from rebounding due to collision with the rubber sleeve after returning to the initial position, a return delay time is set for a piston rod of the return cylinder, the return delay time of the return cylinder can be realized by a PLC program, and when the return delay is static, a vacuum pumping working cycle is completed.

The invention is further configured to: the material trolley is characterized in that heat preservation supporting plates are fixedly connected to the turning positions of the flexible guide rails on the rack respectively, a travelling track is fixedly arranged between the two heat preservation supporting plates and along the straight track after the flexible guide rails turn, the travelling track and the heat preservation supporting plates are in smooth transition, and the material trolley runs on the heat preservation supporting plates and the travelling track.

Through adopting above-mentioned technical scheme, heat preservation backup pad and driving track support the material platform truck of turn state and the material platform truck of straight-going state respectively, guarantee the even running of material platform truck in the frame.

The invention is further configured to: the hot bending furnace functional area comprises a U-shaped feeding area, a hot bending area, a first straight cooling area, a U-shaped discharging area and a second straight cooling area, wherein the U-shaped feeding area and the U-shaped discharging area are positioned at the turning position of the flexible guide rail, and the hot bending area, the first straight cooling area and the second straight cooling area are distributed along the straight track of the flexible guide rail; the U type feeding interval, the first interval that directly cools down, the U type ejection of compact interval and the second interval that directly cools down all are equipped with the driving passageway, the hot crooked interval is equipped with the curved passageway of heat, the driving passageway is linked together with the curved passageway of heat, the material platform truck is worn to establish in driving passageway or the curved passageway of heat.

By adopting the technical scheme, the U-shaped feeding section, the hot bending section, the first direct cooling section, the U-shaped discharging section and the second direct cooling section are distributed in a non-circular manner along the flexible guide rail, so that the problems of strong air convection and large heat loss of the conventional circular hot bending furnace are solved, and the energy consumed by the unit quantity of glass hot bending forming is reduced; and be the hot bending section of straight line distribution, its insulation material all adopt the standard construction can, do not need the customization, make things convenient for people to assemble in addition higher thermal insulation performance, later maintenance is simple and convenient.

The invention is further configured to: the hot bending area comprises a heat insulation cover, the heat insulation cover comprises a horizontally arranged bottom plate, side plates vertically fixed on two sides of the bottom plate, a cover plate horizontally fixed on the tops of the side plates, an inlet plate and an outlet plate, the bottom plate, the side plates and the cover plate are enclosed to form an isolation cavity, the inlet plate and the outlet plate are vertically fixed at the inlet end and the outlet end of the isolation cavity respectively, the hot bending channel is arranged in the heat insulation cover, and the inlet plate and the outlet plate are provided with through holes matched with the hot bending channel; a position-giving opening is formed in a bottom plate of the heat shield, the end portion, provided with the position-giving opening, of the bottom plate is bent upwards to form a flange, edge-protecting angle steel is arranged right above the flange, a fixing plate is arranged on one side, facing the position-giving opening, of the flange, one end of the fixing plate is fixedly connected with the baffle, and the other end of the fixing plate is fixedly connected with the edge-protecting angle steel; the hot bending channel consists of furnace top bricks, furnace side bricks and furnace bottom bricks, wherein the furnace bottom bricks are arranged in a double number and are symmetrically distributed at two sides of a abdicating opening of the bottom plate, the lower edges of the furnace bottom bricks are abutted with flanges, the upper edges of the furnace bottom bricks are abutted with edge protection angle steels, the furnace side bricks are lapped on the furnace bottom bricks, the furnace top brick covers are arranged on furnace side turns, and the upper surfaces of the furnace bottom bricks are assembly surfaces; and a furnace wire is arranged in the hot bending channel.

By adopting the technical scheme, the flanges and the edge protection angle steel are arranged to provide a position reference for the furnace bottom bricks, so that the furnace bottom bricks are laid more neatly, the laying efficiency of the furnace bottom bricks can be improved, the furnace side bricks and the furnace top bricks are erected by taking the furnace bottom bricks as the position reference, and the laying speed of the whole hot bending channel is improved; and the hot bending channel laid along the straight track of the flexible guide rail has the advantages that the furnace rotation of the hot bending channel is a standard rectangular body, so that convenience is brought to people for building construction on one hand, the hot bending channel is suitable for industrial mass production on the other hand, and the production cost and the later maintenance cost of the furnace rotation can be correspondingly reduced.

The invention is further configured to: the tray of the material trolley is rectangular, two sealing plates are fixedly connected to the long edges of the lower surface of the tray vertically, a sealing groove is formed in the furnace bottom brick assembling surface of the hot bending channel vertically and downwards, and when the material trolley runs in the hot bending channel, the sealing plates are in sliding fit with the sealing groove; the horizontal rigid coupling of broadside of tray lower surface has the baffle, the baffle surpasss the tray, and can stretch into the tray below of adjacent material platform truck.

By adopting the technical scheme, the sealing plates are matched with the sealing grooves, so that the contact area of the tray and the assembly surface of the hearth brick is increased, and the vertically distributed sealing plates can plug the gap between the tray and the hearth brick so as to reduce the heat dissipated from the gap between the tray and the hearth brick; and the baffle shields the clearance between two adjacent material trolleys to this reduces the heat that scatters and disappears from the clearance between the adjacent material trolley, has finally reduced the scattering and disappearing of the inside heat of hot curved channel, makes the temperature in the hot curved channel more stable.

The invention is further configured to: the sealing member is all installed to the interval entry end of U type feeding and the interval exit end of U type ejection of compact, the sealing member is including keeping off the frame and setting up the flashboard on keeping off the frame, keep off the frame and be the U-shaped, and the opening is fixed downwards on the interval entry end of U type feeding or the interval exit end of U type ejection of compact, the horizontal symmetry sets up two screw rods on the lateral surface of keeping off the frame, corresponding regulation hole has vertically been seted up on the flashboard, the regulation hole is rectangular form, threaded connection has the nut on the screw rod.

By adopting the technical scheme, the height of the flashboard can be adjusted by setting the adjusting holes, so that the inlet end of the U-shaped feeding section and the outlet end of the U-shaped discharging section can adjust the height of the inlet of the travelling crane channel in real time according to the height of the workpiece to be processed, air convection inside and outside the glass hot bending furnace can be avoided as far as possible, and heat loss inside the glass hot bending furnace is reduced.

In conclusion, the invention has the following beneficial effects:

1. the flexible guide rail is used as a driving structure of the material trolley, so that the running track of the material trolley is changed from the traditional standard circular shape to an oval shape or other shapes, the space between adjacent material trolleys is reduced, the material trolleys can be arranged and installed more compactly, and the occupied area of a rack adopting the flexible guide rail is smaller under the same field;

2. the functional area of the hot bending furnace is changed into other shapes along with the flexible guide rail from the traditional round shape, and the air convection and the heat loss amount in the hot bending furnace can be effectively reduced, so that the heating speed of the functional area of the hot bending furnace is higher, the internal temperature is stable, compared with the traditional hot bending furnace, the efficiency of hot bending forming of glass in unit quantity is improved by 50%, and the energy consumption is reduced by 30%;

3. the hot bending sections are linearly distributed, the heat insulation materials and the furnace rotation of the hot bending channel are all in standard structures, customization is not needed, the assembly of people is facilitated, meanwhile, the heat insulation performance is high, and later maintenance is facilitated;

4. each material trolley is an independent individual, the fault tolerance rate is high, mutual interference cannot occur during maintenance, and maintenance is facilitated.

Drawings

FIG. 1 is a schematic structural view of example 1;

FIG. 2 is a plan view of embodiment 1;

FIG. 3 is a schematic structural view of a material cart in embodiment 1;

FIG. 4 is a schematic view showing a state where the material cart is connected to the chain guide in embodiment 1;

FIG. 5 is a schematic structural view of a U-shaped feed section in example 1;

FIG. 6 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 7 is a schematic view showing the distribution positions of the isolation windows in example 1;

FIG. 8 is a schematic view of the structure of a vacuum apparatus in example 2.

Fig. 9 is a schematic structural view of the material cart in embodiment 2.

In the figure, 1, a frame; 11. a heat preservation support plate; 12. a running track; 13. a support frame; 2. a material trolley; 21. a chassis; 22. a universal wheel; 23. a support bar; 24. a tray; 241. turning over edges; 242. a sealing plate; 243. a baffle plate; 25. molding a brick bottom brick; 26. a connecting plate; 27. connecting sheets; 28. a hinged sheet; 3. a drive device; 31. a chain guide; 32. a driving fluted disc; 33. a driven fluted disc; 34. connecting lugs; 4. a power plant; 5. an electric cabinet; 6. a U-shaped feeding interval; 61. a feed shell; 62. a travelling crane passage; 63. a feeding area lower sealing plate; 7. a thermal bend region; 71. hot bending the channel; 711. a furnace roof brick; 712. furnace side bricks; 713. a hearth brick; 714. a sealing groove; 72. a heat shield; 721. a base plate; 722. a side plate; 723. a cover plate; 724. an inlet plate; 725. an outlet plate; 73. an adjusting frame; 74. a trapezoidal lead screw; 75. blocking edges; 76. edge-protecting angle steel; 77. a fixing plate; 78. a wire casing cover; 8. a first constant temperature reduction interval; 9. a U-shaped discharging interval; 91. a discharging area lower sealing plate; 92. an observation tube; 10. a second direct cooling interval; 101. adjusting the foot; 102. an air duct; 20. connecting the framework; 30. an isolation window; 40. a travel switch; 50. a scram switch; 60. a closure; 601. a blocking frame; 602. a shutter plate; 603. an adjustment hole; 70. a vacuum device; 701. a linear pair track; 7011. an I-shaped sliding rail; 702. a fixed seat; 7021. a slide base; 7022. a guide bar; 703. ejecting out the cylinder; 704. a connecting seat; 705. a suction cup; 7051. a negative pressure hole; 706. a spring rod; 7061. a U-shaped connecting frame; 7062. a rectangular connecting frame; 707. a return cylinder; 708. a rubber sleeve; 709. a section bar frame; 7091. a switch plate; 80. a sucker seat; 801. and (4) a yielding hole.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.