CN114588028A

CN114588028A - Herbal pieces-production is with stir-fry medicine machine that is heated evenly

Info

Publication number: CN114588028A
Application number: CN202210217125.4A
Authority: CN
Inventors: 不公告发明人
Original assignee: Anhui University of Science and Technology
Current assignee: Anhui University of Science and Technology
Priority date: 2022-03-07
Filing date: 2022-03-07
Publication date: 2022-06-07

Abstract

The invention discloses a uniformly heated herbal medicine roaster for herbal medicine decoction piece production, belonging to the field of herbal medicine decoction piece production; a uniformly heated herbal medicine roaster for producing herbal pieces comprises a workbench, a roller mechanism, an end cover assembly, a material pushing mechanism, a containing box and a reciprocating mechanism; the roller mechanism is arranged on the workbench, the end cover assembly is arranged on the roller to shield the front end and the rear end of the roller, and the material pushing mechanism is arranged to drive the end cover assembly to slide, so that the traditional Chinese medicinal materials in the roller can be pushed into the containing box; the clamping assembly is arranged in the roller mechanism, and the movement position of the clamping assembly is controlled by utilizing the position of the front end cover, so that the roller cannot rotate when loading and unloading are carried out, and the loading safety and the unloading accuracy are improved; through setting up reciprocating mechanism, come chinese-medicinal material to improve the homogeneity that is heated.

Description

Herbal pieces-production is with stir-fry medicine machine that is heated evenly

Technical Field

The invention belongs to the field of traditional Chinese medicine decoction piece production, and particularly relates to a uniformly heated herbal medicine roaster for traditional Chinese medicine decoction piece production.

Background

Along with the continuous development of present science and technology, in the herbal pieces-production process, need dry to the traditional chinese medicine, adopt stir-fry medicine machine to add hot drying to the traditional chinese medicine usually, cylinder evenly turns over the stir-fry heating to the medicinal material among the prior art, but makes remaining traditional chinese medicine be difficult to by the clearance in the cylinder.

Disclosure of Invention

Aiming at the defects of the prior art, the invention aims to provide a uniformly heated herbal medicine roaster for producing herbal medicine decoction pieces, which solves the problem that the residual herbal medicine in a roller is difficult to clean in the prior art.

The purpose of the invention can be realized by the following technical scheme:

a uniformly heated herbal medicine roaster for producing herbal pieces for decoction comprises a workbench, wherein a roller mechanism is arranged on the workbench and comprises a roller and a bottom plate arranged at the upper end of the workbench, two support frames are fixed at the upper end of the bottom plate, the roller is rotationally connected with the two support frames, a first gear is arranged on the excircle of the roller, a first driving device is fixed on one support frame, a second gear is fixed on the driving shaft of the first driving device, and the second gear is meshed with the first gear;

furthermore, the front end and the rear end of the roller are both open, a cover plate assembly is mounted on the roller and comprises a front cover plate and a rear cover plate, and the front cover plate and the rear cover plate are fixedly connected through a fixing rod; the front cover plate and the rear cover plate are both circular plates, the diameter of the front cover plate is larger than the inner diameter of the roller, the diameter of the rear cover plate is in clearance fit with the inner diameter of the roller, and Chinese medicinal materials cannot leak out from a clearance between the rear cover plate and the roller;

furthermore, a material pushing mechanism and a storage box are arranged at the upper end of the bottom plate, the material pushing mechanism comprises a first fixing frame fixed at the upper end of the bottom plate, a first rack is connected to the upper end of the first fixing frame in a sliding manner, the end part of the first rack is fixedly connected with the rear cover plate, a second driving device is fixed on the first fixing frame, a third gear is fixed on a driving shaft of the second driving device, and the third gear is meshed with the first rack; the rear cover plate can push the traditional Chinese medicinal materials to the containing box.

Furthermore, a slip ring is rotatably connected to one end, facing the rear cover plate, of the front cover plate, and the slip ring can be tightly attached to one end of the roller, so that the end of the roller is blocked.

Furthermore, the upper end of the bottom plate is provided with a clamping assembly, the clamping assembly comprises a first fixing plate fixed at the upper end of the bottom plate, a guide rod is connected onto the first fixing plate in a sliding manner, one end of the guide rod is fixedly provided with a clamping plate, the clamping plate penetrates through one of the support frames and is connected with the support frames in a sliding manner, a first spring is sleeved on the guide rod, two ends of the first spring are respectively fixedly connected with the side surface of the first fixing plate and the end surface of the clamping plate, and the clamping plate can be clamped between two adjacent teeth of the second gear under the elastic force action of the first spring;

furthermore, a connecting plate is arranged at the lower end of the front end cover, and when the sliding ring on the front end cover is tightly attached to the end of the roller, the connecting plate is in contact with the clamping plate and prevents the clamping plate from being clamped with the second gear; before unloading or material loading, slide the front end housing outwards, at this moment, the cardboard can with the adjacent two intertooth spaces block of second gear under the elasticity effect of first spring.

Furthermore, the bottom plate is connected with the workbench in a sliding manner, the upper end of the workbench is provided with a reciprocating mechanism, the reciprocating mechanism comprises a second fixing plate fixed at the upper end of the workbench and a second rack fixed on one side of the bottom plate, a third driving device is fixed on the second fixing plate, a gear-lacking gear is fixed on a driving shaft of the second driving device, and the gear-lacking gear is incompletely meshed with the second rack; and a second spring is arranged between the containing box and the side surface of the bottom plate, and two ends of the second spring are respectively fixedly connected with the side surface of the containing box and the side surface of the bottom plate.

Further, be provided with first locking mechanism on the bottom plate, first locking mechanism is including fixing the second mount in the bottom plate upper end, and sliding connection has the slide bar on the second mount, and the direction of sliding is vertical direction, and the lower extreme of slide bar is provided with first fixture block, and the cover has the third spring on the slide bar, and the both ends of third spring respectively with the up end of fixture block and the lower terminal surface fixed connection of second mount, under the spring action of third spring, the fixture block can with the adjacent two intertooth spaces block of first rack.

Furthermore, a second locking mechanism is arranged on the workbench and comprises a third fixing frame fixed at the upper end of the workbench, a fourth driving device is fixed at the upper end of the third fixing frame, a second clamping block is fixed at the tail end of a driving shaft of the fourth driving device, and the second clamping block can be clamped with two adjacent teeth of the second rack.

Furthermore, a linkage mechanism is arranged at the upper end of the workbench and comprises a third fixing plate and a guide rail at the upper end of the workbench, a rotating shaft is rotatably connected onto the third fixing plate, a fourth gear is fixed onto the rotating shaft, a third rack is fixed onto one side of the second fixture block, a lifting rod is connected onto the guide rail in a sliding mode, the sliding direction is vertical, a fourth rack is arranged on the lifting rod, and the third rack and the fourth rack are meshed with the fourth gear at the same time and are opposite in moving direction; the upper end of the sliding rod is provided with a connecting rod, the upper end of the lifting rod is connected with the connecting rod in a sliding manner, and the sliding direction is parallel to that of the bottom plate;

further, when the first clamping block is clamped between two adjacent teeth of the first rack, the second clamping block leaves the second rack; when the first clamping block just leaves the first rack, the second rack is clamped with two adjacent teeth of the second rack.

The invention has the beneficial effects that: the roller mechanism is arranged on the workbench, the end cover assembly is arranged on the roller to shield the front end and the rear end of the roller, and the material pushing mechanism is arranged to drive the end cover assembly to slide, so that the traditional Chinese medicinal materials in the roller can be pushed into the containing box; the clamping assembly is arranged in the roller mechanism, and the movement position of the clamping assembly is controlled by utilizing the position of the front end cover, so that the roller cannot rotate when loading and unloading are carried out, and the loading safety and the unloading accuracy are improved; the reciprocating mechanism is arranged to improve the uniformity of heating of the traditional Chinese medicinal materials; through setting up first locking mechanism, second locking mechanism and link gear, come to control pushing equipment and reciprocating mechanism's operation opportunity, avoid pushing equipment and reciprocating mechanism simultaneous operation, cause the unable accuracy of medicinal material to fall into the containing box.

Drawings

In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a roller mechanism according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a fastening assembly according to an embodiment of the present invention;

FIG. 4 is a schematic structural view of an end cap assembly of an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a pushing mechanism according to an embodiment of the present invention

FIG. 6 is a schematic view of a reciprocating mechanism of an embodiment of the present invention;

FIG. 7 is a schematic structural view of a first locking mechanism of the embodiment of the present invention;

FIG. 8 is a schematic structural view of a second locking mechanism of the embodiment of the present invention;

fig. 9 is a schematic structural view of a linkage mechanism according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1-5, a uniformly heated herbal medicine roaster for herbal medicine decoction piece production comprises a workbench 1, a roller mechanism 2 is arranged at the upper end of the workbench 1, the roller mechanism 2 comprises a roller 23, and the herbal medicine is uniformly heated in the roller 23 to complete drying;

the roller mechanism 2 comprises a bottom plate 21 arranged at the upper end of the workbench 1, two support frames 22 are fixed at the upper end of the bottom plate 21, the roller 23 is rotatably connected with the two support frames 22, a first gear 221 is arranged on the excircle of the roller 23, a first driving device 23 is fixed on one support frame 22, a second gear 24 is fixed on the driving shaft of the first driving device 23, and the second gear 24 is meshed with the first gear 221, so that the rotation of the roller 23 is realized; a heating pipe 3 is arranged below the roller 23, the heating pipe 3 is used for heating the roller, and the uniformity of heating of the traditional Chinese medicinal materials in the roller is ensured along with the rotation of the roller 23;

the front end and the rear end of the roller 23 are both open so as to facilitate loading and unloading; the roller 23 is provided with a cover plate assembly 4, the cover plate assembly 4 comprises a front cover plate 41 and a rear cover plate 42, and the front cover plate 41 and the rear cover plate 42 are fixedly connected through a fixing rod 43; the front cover plate 41 and the rear cover plate 42 are both circular plates, the diameter of the front cover plate 41 is larger than the inner diameter of the roller 23, the diameter of the rear cover plate 42 is in clearance fit with the inner diameter of the roller 23, and Chinese medicinal materials cannot leak out from the clearance between the rear cover plate 42 and the roller 23; the upper end of the bottom plate 21 is provided with a material pushing mechanism 5 and a containing box 6, the material pushing mechanism 5 comprises a first fixing frame 51 fixed at the upper end of the bottom plate 21, the upper end of the first fixing frame 51 is connected with a first rack 52 in a sliding manner, the end part of the first rack 52 is fixedly connected with the rear cover plate 42, a second driving device 53 is fixed on the first fixing frame 51, a third gear 54 is fixed on a driving shaft of the second driving device 53, the third gear 54 is meshed with the first rack 52, the sliding driving of the rear cover plate 42 can be realized by controlling the operation of the second driving device 53, so that traditional Chinese medicinal materials in the roller 23 can be pushed into the box 6, and the unloading convenience is improved;

in this embodiment, when the traditional Chinese medicine is dried, the front end cover 41 can seal one end of the roller 23, so as to prevent the leakage of the traditional Chinese medicine; the front end cover 41 is rotatably connected with a slip ring on one side facing the rear end cover 42, the slip ring is tightly attached to one end of the roller 23, the roller 23 is sealed, and friction between the rotation of the roller 23 and the front end cover 41 is avoided.

The clamping assembly 25 is arranged at the upper end of the bottom plate 21, and the clamping assembly 25 is used for limiting the rotation of the roller 23, so that the roller 23 cannot rotate when loading and unloading materials, the loading safety is ensured, and the situation that the medicinal materials are thrown out of the containing box 6 due to the fact that the medicinal materials are subjected to upper rotating power when unloading materials is also avoided;

as shown in fig. 3, the engaging assembly 25 includes a first fixing plate 251 fixed at the upper end of the base plate 21, a guide rod 252 is slidably connected to the first fixing plate 251, a catch plate 253 is fixed at one end of the guide rod 252, the catch plate 253 penetrates through one of the supporting frames 22 and is slidably connected to the supporting frame 22, a first spring 254 is sleeved on the guide rod 252, two ends of the first spring 254 are respectively and fixedly connected to a side surface of the first fixing plate 251 and an end surface of the catch plate 253, and the catch plate 253 can be engaged with two adjacent teeth of the second gear 24 under the elastic force of the first spring 254, so as to prevent the rotation of the drum 23;

in this embodiment, the lower end of the front cover 41 is provided with a connecting plate 411, when the slip ring on the front cover 41 is tightly attached to the end of the drum 23, the connecting plate 411 contacts with the clamping plate 253 and prevents the clamping plate 253 from being engaged with the second gear 24, and at this time, the drum 23 can rotate; before unloading or loading, the front end cover 41 is slid outward, and at this time, the catch plate 253 can be engaged with two adjacent teeth of the second gear 24 under the elastic force of the first spring 254, so that the rotation of the drum 23 is prevented.

The bottom plate 21 is connected with the workbench 1 in a sliding way, and the sliding direction is parallel to the axial direction of the roller 23; the upper end of the workbench 1 is provided with a reciprocating mechanism 7, and the reciprocating mechanism 7 is used for controlling the bottom plate 21 to slide in a reciprocating manner, so that the roller 23 is driven to slide in a reciprocating manner, and the traditional Chinese medicinal materials are heated more uniformly;

as shown in fig. 6, the reciprocating mechanism 7 includes a second fixing plate 72 fixed at the upper end of the table 1, and a second rack 71 fixed at one side of the bottom plate 21, a third driving device 73 is fixed on the second fixing plate 72, a gear 74 with missing teeth is fixed on a driving shaft of the second driving device 73, and the gear 74 with missing teeth is not completely meshed with the second rack 71; a second spring 75 is arranged between the containing box 6 and the side surface of the bottom plate 21, and two ends of the second spring 75 are respectively fixedly connected with the side surface of the containing box 6 and the side surface of the bottom plate 21, so that the bottom plate 21 can slide back and forth.

As shown in fig. 7-9, the upper end of the bottom plate 21 is provided with a first locking mechanism 8 for limiting the operation of the pushing mechanism 5; the upper end of the workbench 1 is provided with a second locking mechanism 9 for limiting the operation of the reciprocating mechanism 7; the linkage mechanism 10 is arranged at the upper end of the workbench 1 to control the operation time of the pushing mechanism 5 and the reciprocating mechanism 7, so that the situation that medicinal materials cannot accurately fall into the containing box 6 due to the fact that the pushing mechanism 5 and the reciprocating mechanism 7 operate simultaneously is avoided;

the first locking mechanism 8 comprises a second fixing frame 81 fixed at the upper end of the bottom plate 21, a sliding rod 82 is connected to the second fixing frame 81 in a sliding mode, the sliding direction is vertical, a first clamping block 821 is arranged at the lower end of the sliding rod 82, a third spring 83 is sleeved on the sliding rod 82, two ends of the third spring 83 are respectively and fixedly connected with the upper end face of the clamping block 821 and the lower end face of the second fixing frame 81, and under the action of the elastic force of the third spring 83, the clamping block 821 can be clamped between two adjacent teeth of the first rack 52, so that the operation of the pushing mechanism 5 is limited;

the second locking mechanism 9 comprises a third fixing frame 91 fixed at the upper end of the workbench 1, a fourth driving device 92 is fixed at the upper end of the third fixing frame 91, a second fixture block 93 is fixed at the tail end of a driving shaft of the fourth driving device 92, and the second fixture block 93 can be clamped with two adjacent teeth of the second rack 71, so that the operation of the reciprocating mechanism 7 is limited;

the linkage mechanism 10 comprises a third fixing plate 101 and a guide rail 105 which are fixed at the upper end of the workbench 1, the third fixing plate 101 is rotatably connected with a rotating shaft 102, a fourth gear 103 is fixed on the rotating shaft 102, a third rack 104 is fixed on one side of the second fixture block 93, a lifting rod 106 is slidably connected on the guide rail 105, the sliding direction is vertical, a fourth rack 1061 is arranged on the lifting rod 106, and the third rack 104 and the fourth rack 1061 are simultaneously meshed with the fourth gear 103 and have opposite movement directions; the upper end of the sliding rod 82 is provided with a connecting rod 822, the upper end of the lifting rod 106 is connected with the connecting rod 822 in a sliding way, and the sliding direction is parallel to that of the bottom plate 21, so that the reciprocating motion of the bottom plate 21 cannot interfere with other mechanisms such as the linkage mechanism 10;

in this embodiment, when the first latch 821 is engaged with two adjacent teeth of the first rack 52, the second latch 93 is away from the second rack 71, and at this time, the pushing mechanism 5 is not operated, and the reciprocating mechanism 7 is able to operate; when the first fixture block 821 just leaves the first rack 52, the second rack 93 is clamped with two adjacent teeth of the second rack 71, so that the situation that the medicinal materials cannot accurately fall into the storage box 6 due to simultaneous operation of the pushing mechanism 5 and the reciprocating mechanism 7 is avoided.

The working principle is as follows:

the roller mechanism 2 is arranged on the workbench 1, the end cover assembly 4 is arranged on the roller 23, the front end and the rear end of the roller 23 are shielded, the material pushing mechanism 5 is arranged to drive the end cover assembly 4 to slide, and therefore traditional Chinese medicinal materials in the roller 23 can be pushed into the containing box 6; the clamping component 25 is arranged in the roller mechanism 2, and the movement position of the clamping component 25 is controlled by utilizing the position of the front end cover 41, so that the roller 23 cannot rotate during feeding and discharging, and the feeding safety and the discharging accuracy are improved; the reciprocating mechanism 7 is arranged to improve the uniformity of heating of the Chinese medicinal materials; through setting up first locking mechanism 8, second locking mechanism 9 and link gear 10, come to control the operation opportunity of pushing equipment 5 and reciprocating mechanism 7, avoid pushing equipment 5 and reciprocating mechanism 7 to move simultaneously, cause that the medicinal material can't be accurate to fall into in the containing box 6.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.

Claims

1. The uniformly heated herbal medicine roaster for producing the herbal pieces for decoction comprises a workbench (1) and is characterized in that a roller mechanism (2) is arranged on the workbench (1), the roller mechanism (2) comprises a roller 23 and a bottom plate (21) arranged at the upper end of the workbench (1), two support frames (22) are fixed at the upper end of the bottom plate (21), the roller (23) is rotatably connected with the two support frames (22), a first gear (221) is arranged on the excircle of the roller (23), a first driving device (23) is fixed on one support frame (22), a second gear (24) is fixed on the driving shaft of the first driving device (23), and the second gear (24) is meshed with the first gear (221);

the front end and the rear end of the roller (23) are open, a cover plate assembly (4) is mounted on the roller (23), the cover plate assembly (4) comprises a front cover plate (41) and a rear cover plate (42), and the front cover plate (41) and the rear cover plate (42) are fixedly connected through a fixing rod (43); the front cover plate (41) and the rear cover plate (42) are both circular plates, the diameter of the front cover plate (41) is larger than the inner diameter of the roller (23), the diameter of the rear cover plate (42) is in clearance fit with the inner diameter of the roller (23), and Chinese medicinal materials cannot leak out from the clearance between the rear cover plate (42) and the roller (23);

the upper end of the bottom plate (21) is provided with a material pushing mechanism (5) and a containing box (6), the material pushing mechanism (5) comprises a first fixing frame (51) fixed at the upper end of the bottom plate (21), the upper end of the first fixing frame (51) is connected with a first rack (52) in a sliding mode, the end part of the first rack (52) is fixedly connected with the rear cover plate (42), a second driving device (53) is fixed on the first fixing frame (51), a third gear (54) is fixed on a driving shaft of the second driving device (53), and the third gear (54) is meshed with the first rack (52); the rear cover plate (42) can push the Chinese medicinal materials to the containing box (6).

2. The uniformly heated herbal medicine roaster for herbal medicine decoction piece production as claimed in claim 1, wherein the front cover plate (41) is rotatably connected with a slip ring towards one end of the rear cover plate (42), and the slip ring can be tightly attached to one end of the roller (23) so as to seal the end of the roller (23).

3. The uniformly heated herbal medicine roaster for herbal medicine decoction piece production according to claim 2, wherein the clamping assembly (25) is arranged at the upper end of the bottom plate (21), the clamping assembly (25) comprises a first fixing plate (251) fixed at the upper end of the bottom plate (21), a guide rod (252) is slidably connected to the first fixing plate (251), a clamping plate (253) is fixed at one end of the guide rod (252), the clamping plate (253) penetrates through one of the supports (22) and is slidably connected with the support (22), a first spring (254) is sleeved on the guide rod (252), two ends of the first spring (254) are respectively fixedly connected with a side surface of the first fixing plate (251) and an end surface of the clamping plate (253), and the clamping plate (253) can be clamped between two adjacent teeth of the second gear (24) under the elastic force of the first spring (254);

the lower end of the front end cover (41) is provided with a connecting plate (411), when the sliding ring on the front end cover (41) is tightly attached to the end of the roller (23), the connecting plate (411) is in contact with the clamping plate (253) and prevents the clamping plate (253) from being clamped with the second gear (24); before unloading or loading, the front end cover (41) slides outwards, and at the moment, the clamping plate (253) can be clamped with two adjacent teeth of the second gear (24) under the elastic force action of the first spring (254).

4. The uniformly heated herbal medicine roaster for producing herbal pieces for decoction, according to claim 1, wherein the bottom plate (21) is slidably connected to the worktable (1), the upper end of the worktable (1) is provided with the reciprocating mechanism (7), the reciprocating mechanism (7) comprises a second fixing plate (72) fixed at the upper end of the worktable (1) and a second rack (71) fixed at one side of the bottom plate (21), a third driving device (73) is fixed on the second fixing plate (72), a gear (74) with teeth missing is fixed on a driving shaft of the second driving device (73), and the gear (74) with teeth missing is incompletely meshed with the second rack (71); a second spring (75) is arranged between the containing box (6) and the side surface of the bottom plate (21), and two ends of the second spring (75) are respectively fixedly connected with the side surface of the containing box (6) and the side surface of the bottom plate (21).

5. The herbal medicine roaster capable of uniformly heating for producing herbal pieces according to claim 4, wherein the bottom plate (21) is provided with a first locking mechanism (8), the first locking mechanism (8) comprises a second fixing frame (81) fixed at the upper end of the bottom plate (21), the second fixing frame (81) is slidably connected with a sliding rod (82), the sliding direction is vertical, the lower end of the sliding rod (82) is provided with a first clamping block (821), the sliding rod (82) is sleeved with a third spring (83), two ends of the third spring (83) are respectively and fixedly connected with the upper end surface of the clamping block (821) and the lower end surface of the second fixing frame (81), and the clamping block (821) can be clamped between two adjacent teeth of the first rack (52) under the elastic force of the third spring (83).

6. The uniformly heated herbal medicine roaster for producing herbal pieces-for-decoction according to claim 5, wherein the workbench (1) is provided with a second locking mechanism (9), the second locking mechanism (9) comprises a third fixing frame (91) fixed on the upper end of the workbench (1), the upper end of the third fixing frame (91) is fixed with a fourth driving device (92), the end of the driving shaft of the fourth driving device (92) is fixed with a second clamping block (93), and the second clamping block (93) can be clamped between two adjacent teeth of the second rack (71).

7. The herbal pieces-production is with stir-fry medicine machine that is heated evenly of claim 6, characterized in that, link gear (10) is set up in workstation (1) upper end, link gear (10) includes third fixed plate (101) and guide rail (105) in workstation (1) upper end, rotate on third fixed plate (101) and be connected with pivot (102), be fixed with fourth gear (103) on pivot (102), one side of second fixture block (93) is fixed with third rack (104), slide on guide rail (105) and be connected with lifter (106), and the slip direction is vertical direction, be provided with fourth rack (1061) on lifter (106), third rack (104) and fourth rack (1061) mesh with fourth gear (103) simultaneously, and the direction of motion is opposite; the upper end of the sliding rod (82) is provided with a connecting rod (822), the upper end of the lifting rod (106) is connected with the connecting rod (822) in a sliding mode, and the sliding direction of the lifting rod is parallel to that of the bottom plate (21);

when the first clamping block (821) is clamped between two adjacent teeth of the first rack (52), the second clamping block (93) leaves the second rack (71); when the first clamping block (821) just leaves the first rack (52), the second rack (93) is clamped with two adjacent teeth of the second rack (71).