CN210392565U - Stepping type conveying mechanism suitable for vacuum pumping equipment - Google Patents

Abstract

The utility model discloses a marching type conveying mechanism suitable for evacuation equipment, the main points of the technical scheme are that the mechanism comprises a frame, a conveying box body for placing a four-way valve, a conveying component which is arranged on the frame and used for placing a supporting surface of the conveying box body and driving the conveying box body to move on the supporting surface, a heating station, an evacuation station and a cooling station are sequentially arranged in the length direction on the supporting surface, a conveying plate is connected in the frame in a sliding way, the length direction and the sliding direction of the conveying plate are the same as the length direction of the supporting surface, and a sliding driving component for driving the conveying plate to slide back and forth is also arranged on the frame; the conveying assembly is provided with a plurality of, and the conveying assembly distributes along the length direction of delivery board, stops when the cross valve heats the station, evacuation station and cooling station and heats, evacuation and cooling operation, and the delivery board keeps motionless, carries the transport box body of having placed the cross valve through conveying assembly when the delivery board slides.

Description

Stepping type conveying mechanism suitable for vacuum pumping equipment

Technical Field

The utility model relates to a conveying mechanism field, more specifically the marching type conveying mechanism suitable for evacuation equipment is related to that says so.

Background

The four-way reversing valve (hereinafter referred to as four-way valve) is one of the most extensive valves applied to an air conditioning system, and the development and application of the four-way valve are a revolution in the development history of air conditioners. The four-way valve is popular for the reasons that firstly the four-way valve drives the main valve through the pilot valve, differential pressure switching action is adopted, reversing is flexible and reliable, secondly the four-way valve can realize the conversion of refrigeration and heating and also can be used for defrosting, when the outdoor unit of the air conditioner is frosted, the four-way valve is used for switching the flow direction of a refrigerant, so that the temperature of the outdoor unit of the air conditioner is increased, defrosting in a short time is completed, energy conservation can be realized, and the four-way valve is safer and more reliable than.

In the production process of the four-way valve, drying treatment is needed, moisture in the four-way valve is removed, the service life of a product is prolonged, the four-way valve needs to enter a heating station to heat the four-way valve in the drying process, then the four-way valve is conveyed to a vacuumizing station to be vacuumized, the four-way valve continues to be heated while vacuumizing is performed, the boiling point of the moisture can be reduced in the negative pressure environment of the vacuumizing station, evaporation of the moisture is accelerated, finally the four-way valve is conveyed to a cooling station to be cooled, the four-way valve needs to stay for a certain time in the heating station, the vacuumizing station and the cooling station, and therefore a stepping type conveying mechanism is needed to convey the four.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a marching type conveying mechanism, this conveying mechanism can carry out marching type to the cross valve and carry.

In order to achieve the above purpose, the utility model provides a following technical scheme: a stepping type conveying mechanism suitable for vacuumizing equipment comprises a rack, conveying boxes for placing a four-way valve, a supporting surface arranged on the rack and used for placing the conveying boxes, and a conveying assembly for driving the conveying boxes to move on the supporting surface, wherein a heating station, a vacuumizing station and a cooling station are sequentially arranged in the length direction of the supporting surface, convex blocks are arranged on two opposite side surfaces of every two adjacent conveying boxes, every two adjacent conveying boxes on the same station are abutted through the convex blocks, a gap is formed between the two opposite side surfaces of every two conveying boxes, a vacuumizing box with an opening at the lower end and a lifting driving device for driving the vacuumizing box to move up and down are arranged on the vacuumizing station, the vacuumizing box and the lifting driving device are both arranged on the rack, and the vacuumizing box covers a plurality of conveying boxes after moving down, the lower end of the vacuumizing box body is attached to the supporting surface, the rack is connected with a conveying plate in a sliding mode, the conveying plate is arranged on one side of the length direction of the supporting surface, the length direction and the sliding direction of the conveying plate are the same as those of the supporting surface, and the rack is further provided with a sliding driving assembly for driving the conveying plate to slide back and forth;

the conveying assemblies are distributed along the length direction of the conveying plate, each conveying assembly comprises a push rod hinged on the conveying plate, an elastic part used for driving the push rod to turn, a pin shaft fixed on the conveying plate and a positioning column positioned between the supporting surface and the conveying plate, the positioning column is fixed on the rack, the middle of each push rod is hinged with the conveying plate, one end, away from the supporting surface, of each push rod is connected with the elastic part, under the elastic action of the elastic part, one end, close to the supporting surface, of each push rod has a turning trend opposite to the conveying direction of the four-way valve, the pin shaft and the positioning column are both positioned on a turning path of the push rods and used for blocking turning of the push rods, the push rods are firstly abutted against the positioning columns and are continuously turned over until the push rods are abutted against the pin shafts under the elastic action of the elastic parts, one ends, close to the supporting surfaces, of the push rods extend into the, and then the push rod drives the conveying box body and the conveying plate to move synchronously, a return blocking piece which blocks the push rod from reversely pushing the conveying box body under the reset state of the conveying plate is arranged between the supporting surface and the conveying plate, and the return blocking piece and the conveying assembly are arranged in a one-to-one correspondence manner.

As a further improvement of the utility model, the positioning columns and the return stroke blocking pieces on the same conveying component are sequentially arranged along the conveying direction of the four-way valve, the return stroke blocking piece comprises a vertical rod hinged with the frame and a cross rod vertically connected with the vertical rod, the middle or lower end of the vertical rod is hinged with the conveying plate, the axial direction of the hinged shaft is vertical to the conveying direction of the four-way valve, one end of the cross rod is fixedly connected with the upper end of the vertical rod, the other end of the cross rod extends towards the conveying direction of the four-way valve, a stop block for preventing the cross rod on the return stroke blocking piece from overturning towards the direction opposite to the conveying direction of the four-way valve is fixed on the frame, a tension spring is arranged at the hinged position of the vertical rod and the frame, the vertical rod is abutted against the stop block under the elastic force, the push rod is abutted against the cross rod, the return stop piece is kept still under the action of the stop block, and the push rod is turned over.

As a further improvement, the slide driving assembly includes a driving wheel installed on the frame, a driving chain installed between the two driving wheels, and a driving piece for driving the driving wheel to rotate, the length direction of the driving chain is consistent with the length direction of the conveying plate, and the lower surface of the conveying plate is fixedly connected with the driving chain.

As a further improvement, the delivery board is provided with two, and two delivery boards set up respectively in holding surface length direction's relative both sides, the correspondence of slip drive assembly is provided with two, and the delivery assembly who sets up on two delivery boards sets up along cross valve direction of delivery symmetry.

As a further improvement, the conveying box becomes top open-ended cuboid setting, the length direction of conveying box is perpendicular with cross valve direction of delivery, conveying box length direction's relative both sides all set up the lug, are located the same side of conveying box the lug and all are provided with two, and two lugs are arranged along the length direction of conveying box.

As a further improvement, the push rod is close to holding surface one end reference column one side dorsad and all is provided with the separation blade, the separation blade sets up with the push rod is perpendicular, and under two push rods promoted the transport box moving state in step, carry the box by spacing between two separation blades on two push rods.

The utility model has the advantages that: through the delivery board, conveying component and return stroke keep off the setting of piece, carry the conveying box body of having placed the cross valve through conveying component when the delivery board slides, when the cross valve is at the heating station, evacuation station and cooling station stop and heat respectively, during heating and evacuation and cooling operation, the delivery board keeps motionless, consequently, the mechanism has realized the marching type of cross valve and has carried, and the structure is ingenious, and when the delivery board was motionless, the push rod is close to holding surface one end and also overturns to keeping away from holding surface department, consequently, the evacuation box body can not interfere with the push rod when moving down, the evacuation box body can move down smoothly.

Drawings

FIG. 1 is a schematic structural view of a step-by-step conveying mechanism suitable for a vacuum-pumping device;

FIG. 2 is a schematic structural diagram of a step-by-step conveying mechanism suitable for a vacuum-pumping device when the push rod is at the initial position;

FIG. 3 is an enlarged view taken at A in FIG. 2;

FIG. 4 is a schematic structural diagram of a stepping conveying mechanism suitable for vacuum-pumping equipment when a push rod enters between adjacent conveying boxes;

FIG. 5 is a schematic structural view of a step-by-step conveying mechanism suitable for a vacuum-pumping device when a push rod pushes a conveying box body in place;

fig. 6 is a schematic structural view of the return stopper.

Reference numerals: 1. a frame; 11. a conveying plate; 2. a conveying box body; 21. a bump; 3. a support surface; 31. A heating station; 32. a vacuum-pumping station; 321. vacuumizing the box body; 322. a lift drive; 33. a cooling station; 4. a delivery assembly; 41. a push rod; 411. a baffle plate; 42. an elastic member; 43. a pin shaft; 44. a positioning column; 45. a return stop; 451. a vertical rod; 452. a cross bar; 453. a stopper; 5. a slide drive assembly; 51. a driving wheel; 52. a drive chain; 53. a drive member.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "bottom" and "top," "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

Referring to fig. 1, the stepping type conveying mechanism suitable for a vacuum pumping device of this embodiment includes a frame 1, a conveying box 2 for placing a four-way valve, a supporting surface 3 disposed on the frame 1 for placing the conveying box 2, and a conveying assembly 4 for driving the conveying box 2 to move on the supporting surface 3, a heating station 31, a vacuum pumping station 32, and a cooling station 33 are sequentially disposed on the supporting surface 3 in a length direction, bumps 21 are disposed on two opposite side surfaces of two adjacent conveying boxes 2, two adjacent conveying boxes 2 on the same station are abutted with each other through the bumps 21, a gap is formed between two opposite side surfaces of the two conveying boxes 2, a vacuum pumping box 321 with an opening at a lower end and a lifting driving device 322 for driving the vacuum pumping box 321 to move up and down are disposed on the vacuum pumping station 32, both the vacuum pumping box 321 and the lifting driving device 322 are mounted on the frame 1, the vacuumizing box body 321 covers the conveying box bodies 2 after moving downwards, the lower end of the vacuumizing box body 321 is attached to the supporting surface 3, the conveying plate 11 is connected to the rack 1 in a sliding mode, the conveying plate 11 is arranged on one side of the supporting surface in the length direction of the supporting surface 3, the length direction and the sliding direction of the conveying plate 11 are the same as the length direction of the supporting surface 3, and the rack 1 is further provided with a sliding driving assembly 5 which is used for driving the conveying plate 11 to slide back and forth. Referring to fig. 2 to 5, a plurality of conveying assemblies 4 are provided, and the conveying assemblies 4 are distributed along the length direction of the conveying plate 11, each conveying assembly 4 includes a push rod 41 hinged to the conveying plate 11, an elastic member 42 for driving the push rod 41 to turn, a pin 43 fixed to the conveying plate 11, and a positioning column 44 located between the supporting surface 3 and the conveying plate 11, the positioning column 44 is fixed to the frame 1, the middle of the push rod 41 is hinged to the conveying plate 11, one end of the push rod 41 away from the supporting surface 3 is connected to the elastic member 42, under the elastic force of the elastic member 42, one end of the push rod 41 close to the supporting surface 3 has a turning tendency opposite to the conveying direction of the four-way valve, the pin 43 and the positioning column 44 are both located on the turning path of the push rod 41 and are used for hindering turning of the push rod 41, under the sliding state of the conveying plate 11 along the conveying direction of the four-way valve, the push rod 41 abuts, one end of the push rod 41 close to the supporting surface 3 extends into the space between the two conveying boxes 2 through a gap, then the push rod 41 drives the conveying boxes 2 to move synchronously with the conveying plate 11, a return blocking piece 45 which blocks the push rod 41 from reversely pushing the conveying boxes 2 in the reset state of the conveying plate 11 is further arranged between the supporting surface 3 and the conveying plate 11, and the return blocking pieces 45 are arranged in one-to-one correspondence with the conveying components 4.

Referring to fig. 1 to 5, the lifting driving device 322 may be a device capable of driving the box body to move up and down, and may be an air cylinder. The vacuuming box 321 should be externally connected with an air extractor, and when the vacuuming box 321 moves down, after the lower end of the vacuuming box 321 is attached to the supporting surface 3, the air extractor extracts air from the vacuuming box 321 so as to reduce the air pressure in the vacuuming box 321, reduce the boiling point of water, and facilitate rapid evaporation of water on the four-way valve in the vacuuming box 321. Still should be provided with a plurality of heating pipes in the evacuation box 321, when air exhaust equipment bled in the evacuation box 321, the heating pipe heated the cross valve, after the temperature in the evacuation box 321 reached a setting value, carried the cross valve to cooling station 33 again, and the setting of heating pipe can avoid when carrying out the evacuation to the cross valve that has the large water yield, and the temperature drops fast and leads to moisture stoving effect poor. The arrangement of the convex blocks 21 on the conveying box bodies 2 ensures that when the adjacent conveying box bodies 2 are abutted, a gap can be reserved between the opposite two side surfaces of the two adjacent conveying box bodies 2, and the pushing rod can conveniently stretch into the space between the two conveying box bodies 2 from the gap. The elastic member 42 may employ a spring. The position of the pin shaft 43 on the conveying plate 11 can be set to be that when the push rod 41 abuts against the pin shaft 43, the length direction of the push rod 41 is perpendicular to the conveying direction of the four-way valve, if the conveying box body 2 is set to be a cube, the push rod 41 pushes the conveying box body 2 at the moment and is in line contact with the conveying box body 2, the conveying box body 2 is driven to move more easily, and the conveying box body 2 is more stable to move. The initial state of the conveying assembly 4 is that one end of the push rod 41 close to the supporting surface 3 abuts against the positioning column 44, when the sliding driving assembly 5 drives the conveying plate 11 to slide towards the conveying direction, one end of the push rod 41 close to the supporting surface 3 is kept in the abutting state with the positioning column 44 under the elastic force of the elastic piece 42, because the positioning column 44 is arranged on the rack 1 and is kept motionless, the push rod 41 continuously turns around the hinge shaft until the push rod 41 abuts against the hinge shaft 43, at the moment, the hinge shaft 43 limits the turning of the push rod 41, in the turning process of the push rod 41, one end of the push rod 41 close to the supporting surface 3 extends into the space between two adjacent conveying boxes 2 through the gap, then the conveying plate 11 continuously slides towards the conveying direction of the four-way valve, the push rod 41 is separated from the positioning column 44, the push rod 41 keeps abutting against the hinge shaft 43 under the elastic force of the elastic piece 42, the push rod 41 moves along with the . After the conveying box body 2 is moved to a designated position, the sliding driving assembly 5 drives the conveying plate 11 to reversely slide, the push rod 41 is firstly abutted to the return stopper 45, and the push rod 41 is firstly reversely overturned under the blocking action of the return stopper 45 and then resets along with the conveying plate 11, so that the conveying box body 2 cannot be reversely pushed in the resetting process of the push rod 41. The conveying assemblies 4 are preferably three, one conveying assembly 4 is used for conveying the conveying box bodies 2 from the heating station 31 to the vacuumizing station 32, one conveying assembly 4 is used for conveying the conveying box bodies 2 from the vacuumizing station 32 to the cooling station 33, the last conveying assembly 4 is used for conveying the conveying box bodies 2 from the cooling station 33 to the next station, the conveying plate 11 reciprocates once to drive the three conveying assemblies 4 to convey the conveying box bodies 2 synchronously, a plurality of conveying box bodies 2 are placed at each station simultaneously, after the conveying box body 2 at the previous station is conveyed to the next station, the conveying box body 2 newly conveyed to the next station is abutted to the conveying box body 2 which is not conveyed out, and the conveying box body 2 which is not conveyed out is pushed to the set position of the station, so that the conveying box bodies 2 can be conveyed out smoothly. The conveying plate 11 conveys the conveying box body 2 in which the four-way valve is placed when sliding, when the four-way valve stops at the heating station 31, the vacuumizing station 32 and the cooling station 33 to be respectively heated, vacuumized and cooled, the conveying plate 11 keeps still, therefore, the mechanism realizes the stepping conveying of the four-way valve, the structure is ingenious, and when the conveying plate 11 is not moved, one end, close to the supporting surface 3, of the push rod 41 is also overturned to a position far away from the supporting surface 3, therefore, the vacuumizing box body 321 cannot interfere with the push rod 41 when moving downwards, and the vacuumizing box body 321 can move downwards smoothly.

As an improved specific embodiment, referring to fig. 6, the positioning posts 44 and the return stopper 45 on the same conveying assembly 4 are sequentially arranged along the conveying direction of the four-way valve, the return stopper 45 includes a vertical rod 451 hinged to the frame 1 and a cross rod 452 perpendicularly connected to the vertical rod 451, the middle or lower end of the vertical rod 451 is hinged to the conveying plate 11, the axial direction of the hinged shaft is perpendicular to the conveying direction of the four-way valve, one end of the cross rod 452 is fixedly connected to the upper end of the vertical rod 451, the other end of the cross rod extends in the conveying direction of the four-way valve, a stopper 453 is fixed on the frame 1 for preventing the cross rod 452 on the return stopper 45 from turning in the direction opposite to the conveying direction of the four-way valve, a tension spring 453 is arranged at the hinged. The stopper 453 may be positioned such that the vertical bar 451 is in a vertical state when the vertical bar 451 abuts the stopper 453. In an initial state, one end of the push rod 41 close to the supporting surface 3 is positioned between the positioning column 44 and the return stop piece 45, and when the push rod 41 and the conveying plate 11 move together along the conveying direction of the four-way valve, the push rod 41 abuts against the vertical rod 451 and pushes the reverse return stop piece 45 to turn over until the push rod 41 is separated from the return stop piece 45, the return component is reset to abut against the vertical rod 451 and the stop piece 453 under the elastic force of the tension spring; after the push rod 41 conveys the conveying box 2 to the designated position, the conveying plate 11 resets, at this moment, the push rod 41 abuts against the cross rod 452 on the return stopper 45 firstly, due to the stopping effect of the stopper 453 on the return stopper 45, the push rod 41 cannot drive the return stopper 45 to overturn against the thrust of the return stopper 45, and the reaction force of the cross rod 452 on the push rod 41 drives the push rod 41 to overturn, so that the push rod 41 is separated from the pin shaft 43, until the end, close to the supporting surface 3, of the push rod 41 also overturns to the side of the supporting surface 3 based on the principle of the cross rod 452, then the conveying plate 11 resets to the initial position together with the push rod 41 when continuing conveying, through the setting of the return stopper 45, in the resetting process of the conveying plate 11, the push rod 41 overturns firstly and then resets, the reverse pushing of the push rod 41.

As an improved embodiment, referring to fig. 1, the sliding driving assembly 5 includes a driving wheel 51 mounted on the frame 1, a driving chain 52 mounted between the two driving wheels 51, and a driving member 53 for driving the driving wheel 51 to rotate, wherein the length direction of the driving chain 52 is consistent with the length direction of the conveying plate 11, and the lower surface of the conveying plate 11 is fixedly connected to the driving chain 52. The driving part 53 is a device capable of driving the transmission wheel 51 to rotate, a servo motor can be adopted, the transmission mechanism such as a transmission belt can be used for driving the transmission wheel 51 to rotate, the servo motor can drive the conveying plate 11 to slide through the transmission chain 52 in the working state, and the structure is simple and the practicability is high.

As a modified specific embodiment, referring to fig. 2 to 5, two conveying plates 11 are provided, two conveying plates 11 are respectively disposed on two opposite sides of the length direction of the supporting surface 3, two sliding driving assemblies 5 are correspondingly provided, and the conveying assemblies 4 disposed on the two conveying plates 11 are symmetrically disposed along the conveying direction of the four-way valve. Servo motor, driving chain 52 etc. all correspond and are provided with two, two servo motor synchronous motion, through transport assembly 4 on two delivery boards 11 in transport box 2 both ends synchronous promotion transport box 2 for transport box 2 both ends atress simultaneously, transport box 2's transport is more steady.

As an improved specific embodiment, referring to fig. 2 to 5, the conveying box 2 is a rectangular parallelepiped with an opening at the top, the length direction of the conveying box 2 is perpendicular to the conveying direction of the four-way valve, two lugs 21 are arranged on two opposite sides of the length direction of the conveying box 2, two lugs 21 are arranged on the same side of the conveying box 2, and the two lugs 21 are arranged along the length direction of the conveying box 2. Two lugs 21 that lie in the same side of box set up along the setting of arranging of 2 length direction of conveying box, compare with only setting up a lug 21 in the middle of 2 length of conveying box, 2 length direction's of conveying box two places and adjacent another conveying box 2 butt, can make the space between two adjacent conveying box 2 more even, two conveying box 2's parallelism is higher, more is favorable to push rod 41 from inserting between two conveying box 2.

As an improved specific embodiment, referring to fig. 3, blocking pieces 411 are respectively disposed on one side of the push rods 41 close to the supporting surface 3 and the side of the push rods 41 opposite to the positioning column 44, the blocking pieces 411 are perpendicular to the push rods 41, and the conveying box 2 is limited between the two blocking pieces 411 on the two push rods 41 when the two push rods 41 synchronously push the conveying box 2 to move. After one end of the push rod 41 close to the supporting surface 3 is inserted between the two positioning columns 44, the baffle piece 411 on the conveying push rod 41 can limit the movement of the conveying box body 2 along the length direction, so that the phenomenon that the conveying box body 2 deviates along the length direction in the conveying process of the conveying box body 2 is avoided, the vacuumizing box body 321 is interfered with the conveying box body 2 when moving downwards, and the smooth drying of the four-way valve in the conveying box body 2 is influenced.

The working principle is as follows:

when the conveying boxes 2 in each station need to be conveyed, the two servo motors synchronously move, the two conveying plates 11 are driven by the two transmission chains 52 to synchronously slide towards the conveying direction, one end of the push rod 41 close to the supporting surface 3 is kept in a state of abutting against the positioning column 44 under the elastic action of the elastic piece 42, because the positioning column 44 is arranged on the rack 1, the push rod 41 is continuously overturned around the hinge shaft until the push rod 41 abuts against the hinge shaft 43, at the moment, the hinge shaft 43 limits the overturning of the push rod 41, in the overturning process of the push rod 41, one end of the push rod 41 close to the supporting surface 3 extends into the space between the two adjacent conveying boxes 2 through a gap, then the conveying plates 11 continuously slide towards the conveying direction of the four-way valve, the push rod 41 is separated from the positioning column 44, the push rod 41 is kept in abutting against the hinge shaft 43 under the elastic action of the elastic piece 42, the push rod 41 moves along with the conveying plates 11 and pushes the During the moving process of the push rod 41, the push rod 41 is firstly abutted to the vertical rod 451 and pushes the overturning return stopper 45 to overturn until the push rod 41 is separated from the return stopper 45, and the return assembly is reset to abut the vertical rod 451 to the stopper 453 under the elastic action of the tension spring;

after each delivery box 2 is moved to the assigned position, servo motor drives delivery plate 11 and resets, push rod 41 earlier with the return stroke keep off horizontal pole 452 butt on the piece 45 this moment, because the effect of blockking of return stroke fender piece 45 upset is kept off to the dog 453, push rod 41 can't drive return stroke fender piece 45 upset to the thrust that the piece 45 was kept off to the return stroke, and horizontal pole 452 drives push rod 41 upset to the reaction force of push rod 41, make push rod 41 break away from with round pin axle 43 mutually, 3 one side of horizontal pole 452 principle holding surface 3 is also overturned to the push rod 41 near holding surface 3 one end, later when delivery plate 11 continues to reset, will drive push rod 41 and reset to the initial position together, keep off the setting of piece 45 through the return stroke, delivery plate 11 resets in-process, push rod 41 overturns earlier and resets again, push rod 41 has been avoided reverse promotion.

The conveying assemblies 4 are preferably three, one conveying assembly 4 is used for conveying the conveying box bodies 2 from the heating station 31 to the vacuumizing station 32, one conveying assembly 4 is used for conveying the conveying box bodies 2 from the vacuumizing station 32 to the cooling station 33, the last conveying assembly 4 is used for conveying the conveying box bodies 2 from the cooling station 33 to the next station, the conveying plate 11 reciprocates once to drive the three conveying assemblies 4 to convey the conveying box bodies 2 synchronously, a plurality of conveying box bodies 2 are placed at each station simultaneously, after the conveying box body 2 at the previous station is conveyed to the next station, the conveying box body 2 newly conveyed to the next station is abutted to the conveying box body 2 which is not conveyed out, and the conveying box body 2 which is not conveyed out is pushed to the set position of the station, so that the conveying box bodies 2 can be conveyed out smoothly. The conveying plate 11 conveys the conveying box body 2 in which the four-way valve is placed when sliding, when the four-way valve stops at the heating station 31, the vacuumizing station 32 and the cooling station 33 for heating, vacuumizing and cooling, the conveying plate 11 keeps still, therefore, the mechanism realizes the stepping conveying of the four-way valve, the structure is ingenious, and when the conveying plate 11 is not moved, one end, close to the supporting surface 3, of the push rod 41 is also overturned to a position far away from the supporting surface 3, so that the vacuumizing box body 321 cannot interfere with the push rod 41 when moving downwards, and the vacuumizing box body 321 can move downwards smoothly. The setting of separation blade 411 makes when push rod 41 is close to the one end of holding surface 3 and inserts between two reference columns 44 after, the separation blade 411 on carrying push rod 41 can carry on spacingly to carrying box 2 along length direction's removal, avoids carrying box 2 transportation process, carries box 2 to take place the skew along length direction, leads to evacuation box 321 to move down the time and interfere with carrying box 2, influences the smooth stoving of cross valve in carrying box 2.

Above only the utility model discloses an it is preferred embodiment, the utility model discloses a scope of protection not only limits in above-mentioned embodiment, and the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (6)

1. The utility model provides a marching type conveying mechanism suitable for evacuation equipment, includes frame (1), is used for placing transport box (2) of cross valve, sets up supporting surface (3) that are used for placing transport box (2) and drive transport assembly (4) that transport box (2) moved on supporting surface (3) in frame (1), heating station (31), evacuation station (32) and cooling station (33) have set gradually on the length direction on supporting surface (3), its characterized in that: the two opposite side surfaces of two adjacent conveying box bodies (2) are provided with a convex block (21), the two adjacent conveying box bodies (2) positioned on the same station are abutted through the convex block (21), a gap is formed between the two opposite side surfaces of the two conveying box bodies (2), the vacuumizing station (32) is provided with a vacuumizing box body (321) with an opening at the lower end and a lifting driving device (322) for driving the vacuumizing box body (321) to move up and down, the vacuumizing box body (321) and the lifting driving device (322) are both arranged on the rack (1), the vacuumizing box body (321) moves down to cover a plurality of conveying box bodies (2), the lower end of the vacuumizing box body (321) is attached to the supporting surface (3), the rack (1) is connected with a conveying plate (11) in a sliding manner, the conveying plate (11) is arranged on one side of the length direction of the supporting surface (3), the length direction and the sliding direction of the conveying plate (11) are both the same as the length direction of the supporting surface, the rack (1) is also provided with a sliding driving component (5) for driving the conveying plate (11) to slide back and forth;

the conveying assembly (4) is provided with a plurality of conveying assemblies (4), the conveying assemblies (4) are distributed along the length direction of the conveying plate (11), each conveying assembly (4) comprises a push rod (41) hinged to the conveying plate (11), an elastic part (42) used for driving the push rod (41) to overturn, a pin shaft (43) fixed on the conveying plate (11) and a positioning column (44) located between the supporting surface (3) and the conveying plate (11), the positioning column (44) is fixed on the rack (1), the middle of the push rod (41) is hinged to the conveying plate (11), one end, far away from the supporting surface (3), of the push rod (41) is connected with the elastic part (42), the push rod (41) is under the elastic action of the elastic part (42), one end, close to the supporting surface (3), of the push rod (41) has an overturning trend opposite to the conveying direction of the four-way valve, and the pin shaft (43) and the positioning column (44) are located on an overturning path of the push rod (41) and used ) The conveying device comprises a conveying plate (11), wherein the conveying plate (11) is in a sliding state along the conveying direction of a four-way valve, a push rod (41) is firstly abutted to a positioning column (44) and is continuously overturned until the push rod (41) is abutted to a pin shaft (43), one end, close to a supporting surface (3), of the push rod (41) extends into a space between two conveying boxes (2) through a gap, then the push rod (41) drives the conveying boxes (2) and the conveying plate (11) to move synchronously, a return blocking piece (45) which blocks the push rod (41) from reversely pushing the conveying boxes (2) in the reset state of the conveying plate (11) is further arranged between the supporting surface (3) and the conveying plate (11), and the return blocking pieces (45) and the conveying assemblies (4) are arranged in a.

2. The step-by-step conveying mechanism suitable for the vacuum-pumping equipment as claimed in claim 1, wherein: the positioning columns (44) and the return stopper (45) on the same conveying assembly (4) are sequentially arranged along the conveying direction of the four-way valve, the return stopper (45) comprises a vertical rod (451) hinged with the rack (1) and a cross rod (452) vertically connected with the vertical rod (451), the middle or lower end of the vertical rod (451) is hinged with the conveying plate (11), the axial direction of a hinged shaft is vertical to the conveying direction of the four-way valve, one end of the cross rod (452) is fixedly connected with the upper end of the vertical rod (451), the other end of the cross rod extends towards the conveying direction of the four-way valve, a stopper (453) for preventing the cross rod (452) on the return stopper (45) from overturning in the direction opposite to the conveying direction of the four-way valve is fixed on the rack (1), a tension spring is arranged at the hinged position of the vertical rod (451) and the rack (1), and the, under the state that the push rod (41) moves along the four-way valve in the conveying direction, the push rod (41) is abutted to the vertical rod (451) and pushes the overturning return stopper (45) to overturn, under the reset state of the push rod (41), the push rod (41) is abutted to the cross rod (452), the return stopper (45) is kept still under the action of the stopper (453), and the push rod (41) overturns.

3. The step-by-step conveying mechanism suitable for the vacuum-pumping equipment as claimed in claim 1, wherein: the sliding driving assembly (5) comprises driving wheels (51) arranged on the rack (1), a driving chain (52) arranged between the two driving wheels (51) and a driving piece (53) used for driving the driving wheels (51) to rotate, the length direction of the driving chain (52) is consistent with that of the conveying plate (11), and the lower surface of the conveying plate (11) is fixedly connected with the driving chain (52).

4. A step conveyor suitable for use in a vacuum extractor according to any one of claims 1-3, wherein: the conveying plates (11) are arranged in two, the two conveying plates (11) are arranged on two opposite sides of the length direction of the supporting surface (3) respectively, the sliding driving assemblies (5) are correspondingly arranged in two, and the conveying assemblies (4) arranged on the two conveying plates (11) are symmetrically arranged along the conveying direction of the four-way valve.

5. The step-by-step conveying mechanism suitable for the vacuum-pumping equipment as claimed in claim 4, wherein: the conveying box body (2) is arranged in a cuboid with an upper opening, the length direction of the conveying box body (2) is perpendicular to the conveying direction of the four-way valve, the two opposite sides of the length direction of the conveying box body (2) are provided with two lugs (21), the lugs (21) on the same side face of the conveying box body (2) are provided with two lugs, and the two lugs (21) are arranged along the length direction of the conveying box body (2).

6. The step-by-step conveying mechanism suitable for the vacuum-pumping equipment as claimed in claim 5, wherein: one side of one end, close to the supporting surface (3), of the push rod (41) back to the positioning column (44) is provided with a baffle sheet (411), the baffle sheet (411) is perpendicular to the push rod (41), the two push rods (41) synchronously push the conveying box body (2) to move, and the conveying box body (2) is limited between the two baffle sheets (411) on the two push rods (41).

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