CN214868559U

CN214868559U - Double-station faucet valve element assembling device

Info

Publication number: CN214868559U
Application number: CN202120390258.2U
Authority: CN
Inventors: 曾温赐
Original assignee: Fujian Quantai Intelligent Technology Development Co ltd
Current assignee: Fujian Quantai Intelligent Technology Development Co ltd
Priority date: 2021-02-22
Filing date: 2021-02-22
Publication date: 2021-11-26
Anticipated expiration: 2031-02-22

Abstract

The utility model relates to a double-station faucet valve core assembling device, which relates to the technical field of faucet valve core assembling devices and comprises a frame, a valve rod double-station rotating disc arranged at the upper side of the frame, and valve rod assembling devices distributed around the periphery of the valve rod double-station rotating disc, wherein a transition conveying device used for conveying a valve rod is arranged between the valve rod rotating disc and a shell conveying device, one side of the transition conveying device is provided with a first clamping conveying device, one end of the shell conveying device is provided with a detection device used for detecting the valve core, the device can assemble the valve core in a double-station assembling mode, the speed and the productivity of the whole assembling process are improved, the valve core is assembled by the arranged shell conveying device in a straight line flowing mode, the whole assembling process can be clearer, the control of the device is convenient, and the valve core can be detected by the arranged device, improve ejection of compact effect and work efficiency, the automation level is high.

Description

Double-station faucet valve element assembling device

Technical Field

The utility model relates to a duplex position tap case equipment relates to tap case rigging equipment technical field.

Background

The valve core of the water tap is a key part which influences the quality of the water tap and directly influences the function realization and the quality of the water tap, the existing valve core of the water tap mainly comprises three types, namely a rubber valve core, a stainless steel valve core, a ceramic valve core and the like, and the ceramic valve core is most widely applied. The existing ceramic valve core is usually assembled manually, and is low in assembly speed and low in working efficiency.

Chinese patent No.: 201821968259.5 discloses a faucet valve core assembly machine, which comprises a frame, a first rotary disk and a second rotary disk arranged on the frame, a fixed seat station, a valve rod assembly mechanism, a gasket assembly mechanism, a sealing ring assembly mechanism, a shell assembly mechanism, a valve rod installation mechanism, a first ceramic chip assembly mechanism, a second ceramic chip assembly mechanism, a sealing ring assembly mechanism, a bottom ring assembly mechanism, a discharge mechanism, a rotary head for inserting the shell to close the valve, and a test mechanism for detecting the air tightness of the valve core, wherein when the device operates, the valve rod and the shell are all conveyed through the placing station of the rotary disks, each assembly mechanism surrounds the two rotary disks and drives the large and small rotary disks to rotate and assemble in sequence through a motor, the device structure is dense, is not convenient for workers to control the discharging of the valve core assembly, and the valve core assembly speed and the working efficiency are to be improved, therefore, it is necessary to provide a two-position faucet valve core assembling device.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a duplex position tap case equipment to solve the problem of mentioning in the above-mentioned background art not enough to prior art exists.

In order to achieve the above purpose, the present invention is realized by the following technical solution: the valve rod double-station rotary disc type valve core assembling device comprises a rack, a valve rod double-station rotary disc arranged on the upper side of the rack, a valve rod assembling device distributed around the periphery of the valve rod double-station rotary disc, a gasket assembling device, a plurality of sealing ring assembling devices for sleeving sealing rings on valve rods, a shell assembling device, a shell conveying device for placing and conveying a shell, a first clamping and conveying device for clamping and loading the valve rods into the shell, a first ceramic wafer assembling device, a second ceramic wafer assembling device, a shell sealing ring assembling device for sleeving the sealing rings on the shell, a bottom ring assembling device and a discharging device for conveying assembled valve cores to the next process, wherein the shell assembling device, the first ceramic wafer assembling device, the second ceramic wafer assembling device, the shell sealing ring assembling device and the bottom ring assembling device are sequentially arranged on one side of the shell conveying device, and a transition conveying device for conveying the valve rods is arranged between the valve rod double-station rotary disc and the shell conveying device, a first clamping and conveying device is installed on one side of the transition conveying device, the first clamping and conveying device is arranged between the transition conveying device and the shell conveying device, a detection device for detecting valve cores is arranged at one end of the shell conveying device, a third clamping and conveying device is arranged on one side of the detection device, the third clamping and conveying device is arranged on one side of a conveying station of the discharging device, the detection device is arranged between the shell conveying device and the discharging device, the shell conveying device comprises a fixed frame and a conveying belt, the transition conveying device and the detection device are respectively arranged on two sides of the conveying belt, the fixed frame is installed on a rack through bolts, the conveying belt is installed on the fixed frame, a plurality of valve core double-station parts are installed on the conveying belt, a linear notch is formed in the middle of the fixed frame, and each double-valve core double-station part is arranged on the inner side of the linear notch, and the upper side of the fixed frame is also provided with a plurality of stabilizing devices for clamping and stabilizing the valve core.

Furthermore, the transition conveying device comprises a double-workpiece sliding groove, a second clamping conveying device and a first overturning device are arranged at two ends of the double-workpiece sliding groove respectively, clamping stations of the second clamping conveying device and the first overturning device are arranged corresponding to the double-workpiece sliding groove, the second clamping conveying device corresponds to a station on the double-station rotating disc, the first clamping conveying device, the second clamping conveying device and the third clamping conveying device are identical in structure, and the clamping station of the first overturning device and the clamping station of the first clamping conveying device are on the same horizontal line.

Further, the second clamping and conveying device structure comprises a mounting plate, a first hydraulic cylinder, a horizontal sliding plate, a vertical sliding plate and a second hydraulic cylinder, the first hydraulic cylinder is horizontally mounted on the mounting plate, the horizontal sliding plate is connected with the mounting plate through a sliding chute and a sliding block, the horizontal sliding plate is connected with the telescopic end of the first hydraulic cylinder to realize horizontal sliding, the second hydraulic cylinder is vertically mounted on the upper side of the horizontal sliding plate, the vertical sliding plate is vertically connected with the horizontal sliding plate in a sliding mode, the upper side of the vertical sliding plate is connected with the telescopic end of the second hydraulic cylinder to realize vertical sliding, and a double-station clamping head is mounted at the bottom of the vertical sliding plate.

Furthermore, the double-station clamping head of the first clamping and conveying device corresponds to the positions of the valve core double-station parts on the conveying belt, the double-station clamping head of the second clamping and conveying device corresponds to the positions of the double-station parts sliding groove and the valve rod double-station rotating disc, and the double-station clamping head of the third clamping and conveying device is correspondingly arranged above the valve core double-station parts of the conveying belt.

Furthermore, the detection device structure comprises a detection station rotating disc, the detection station rotating disc is provided with a plurality of groups of stations for placing the valve cores, one group of stations is four placing stations, photoelectric sensors are arranged above one group of stations for placing the valve cores, and each photoelectric sensor is installed on the rack through a fixing plate.

Furthermore, the double-station clamping head of the third clamping and conveying device corresponds to one group of stations of the detection station rotating disc, wherein the stations are used for placing the valve cores.

Further, detection station rolling disc one side is equipped with second turning device, second turning device is the same with first turning device structure, second turning device includes the rotatory swinging boom through motor drive, swinging boom one end is provided with the double-end telescopic link, two flexible ends of double-end telescopic link are connected with the splint of two relative settings to through splint with one of them a set of case centre gripping upset to discharging device of detection station rolling disc.

Further, the clamping plates of the first turnover device are respectively kept on the same parallel line with the double-workpiece sliding groove and the double-station clamping head of the first clamping and conveying device.

Further, the stabilizing device comprises two connecting plates which are respectively installed above the fixing frame through screws, two sliding rods are horizontally arranged between the connecting plates respectively, two abutting plates are arranged on the sliding rods in a penetrating mode respectively, two stable telescopic cylinders are installed on the connecting plates, the telescopic ends of the stable telescopic cylinders are connected with the two abutting plates respectively, the two abutting plates are arranged above the conveying belt and are arranged on two sides of the valve core double-station piece.

By adopting the technical scheme, the beneficial effects of the utility model are that: equipment can assemble the case with the duplex position equipment mode, has improved the speed and the productivity of whole equipment flow, and the casing conveyor who leads to the setting assembles the case with the mode of straight line flowing water, makes the clear management and control to equipment of being convenient for that whole equipment process can be more, just can detect the case of each assembly through setting up, improves ejection of compact effect and work efficiency, and the automation level is high, more has positive profitable result of use than prior art.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is a schematic view of the present invention;

FIG. 2 is a schematic view of a partial structure of the present invention;

fig. 3 is a schematic structural view of the shell conveying device of the present invention;

fig. 4 is a schematic side view of the conveyor belt of the present invention;

fig. 5 is a schematic top view of the conveyor belt of the present invention;

fig. 6 is a schematic structural diagram of the transition conveyor of the present invention;

fig. 7 is a schematic structural view of a second clamping and conveying device of the present invention;

fig. 8 is a schematic structural view of the detecting device of the present invention;

fig. 9 is a schematic structural view of a second turnover device of the present invention;

FIG. 10 is a schematic view of the fixing device of the present invention;

FIG. 11 is a schematic side view of the stabilizer of the present invention;

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

Referring to fig. 1-11, the present invention provides a technical solution of a double-station faucet valve core assembling apparatus: comprises a frame 1, a valve rod double-station rotating disc 10 arranged on the upper side of the frame 1, a valve rod assembling device 11 arranged around the periphery of the valve rod double-station rotating disc 10, a gasket assembling device 12, a plurality of sealing ring assembling devices 13 used for sleeving sealing rings on valve rods, a shell assembling device 14, a shell conveying device 15 used for placing and conveying shells, a first clamping conveying device 16 used for clamping valve rods into the shells, a first ceramic piece assembling device 17, a second ceramic piece assembling device 18, a shell sealing ring assembling device 19 used for sleeving sealing rings on the shells, a bottom ring assembling device 110 and a discharging device 111 used for conveying assembled valve cores to the next procedure, wherein the shell assembling device 14, the first ceramic piece assembling device 17, the second ceramic piece assembling device 18, the shell sealing ring assembling device 19 and the bottom ring assembling device 110 are sequentially arranged on one side of the shell conveying device 15, a transition conveying device 2 for conveying the valve rod is arranged between the valve rod double-station rotating disc 10 and the shell conveying device 15, a first clamping conveying device 16 is installed on one side of the transition conveying device 2, the first clamping conveying device 16 is arranged between the transition conveying device 2 and the shell conveying device 15, a detection device 3 for detecting the valve core is arranged at one end of the shell conveying device 15, a third clamping conveying device 4 is arranged on one side of the detection device 3, the third clamping conveying device 4 is arranged on one side of a conveying station of the discharging device 111, the detection device 3 is arranged between the shell conveying device 15 and the discharging device 111, the shell conveying device 15 comprises a fixed frame 151 and a conveying belt 152, the transition conveying device 2 and the detection device 3 are respectively arranged on two sides of the conveying belt 152, and the fixed frame 151 is installed on the frame 1 through bolts, the conveying belt 152 is mounted on the fixing frame 151 through conveying rollers and driven by a motor, a plurality of valve core double-station pieces 153 are mounted on the conveying belt 152, a linear notch 154 is formed in the middle of the fixing frame 151, each valve core double-station piece 153 is arranged on the inner side of the linear notch 154, a plurality of fixing devices 155 used for clamping and fixing a valve core are further mounted on the upper side of the fixing frame 151, the transition conveying device 2 comprises a double-workpiece chute 21, a second clamping conveying device 22 and a first overturning device 23 are respectively arranged at two ends of the double-workpiece chute 21, clamping stations of the second clamping conveying device 22 and clamping stations of the first overturning device 23 are arranged corresponding to the double-workpiece chute 21, the second clamping conveying device 22 corresponds to stations on the valve rod double-station rotating disc 10, and the first clamping conveying device 16, the second clamping conveying device 22 and the third clamping conveying device 4 are identical in structure, the first turnover device 23 has a clamping station on the same horizontal line as the clamping station of the first clamping and conveying device 16, the second clamping and conveying device 22 includes a mounting plate 221, a first hydraulic cylinder 222, a horizontal sliding plate 223, a vertical sliding plate 224, and a second hydraulic cylinder 225, the first hydraulic cylinder 222 is horizontally mounted on the mounting plate 221, the horizontal sliding plate 223 is connected with the mounting plate 221 through a sliding block, the horizontal sliding plate 223 is connected with the telescopic end of the first hydraulic cylinder 222 to realize horizontal sliding, the second hydraulic cylinder 225 is vertically mounted on the upper side of the horizontal sliding plate 223, the vertical sliding plate 224 is vertically connected with the horizontal sliding plate 223, the upper side of the vertical sliding plate 224 is connected with the telescopic end of the second hydraulic cylinder 225 to realize vertical sliding, a double-station clamping head 226 is mounted at the bottom of the vertical sliding plate 224, the double-station clamping head 226 of the first clamping and conveying device 16 corresponds to the position of the double-station piece 153 on the conveying belt 152, the double-station clamping head 226 of the second clamping and conveying device 22 corresponds to the station positions of the double-workpiece chute 21 and the valve rod double-station rotating disc 10, the double-station clamping head 226 of the third clamping and conveying device 4 corresponds to the position above the valve core double-station piece 153 of the conveying belt 152, the structure of the detection device 3 comprises a detection station rotating disc 31, the detection station rotating disc 31 is provided with a plurality of groups of stations for placing valve cores, one group of stations is four placing stations, photoelectric sensors 32 are arranged above one group of stations for placing the valve cores, each photoelectric sensor 32 is installed on the machine frame 1 through a fixing plate, the double-station clamping head 226 of the third clamping and conveying device 4 corresponds to one group of stations for placing the valve cores in the detection station rotating disc 31, one side of the detection station rotating disc 31 is provided with a second overturning device 33, and the second overturning device 33 has the same structure as the first overturning device 23, the second turnover device 33 comprises a rotating arm 331 which is driven to rotate by a motor, a double-end telescopic rod 332 is arranged at one end of the rotating arm 331, two telescopic ends of the double-end telescopic rod 332 are connected with two oppositely arranged clamping plates 333, one group of valve cores of the detection station rotating disc 31 is clamped and turned to the discharging device 111 through the clamping plates 333, the clamping plates 333 of the first turnover device 23 are respectively kept on the same parallel line with the double-workpiece sliding groove 21 and the double-station clamping head 226 of the first clamping and conveying device 16, the stabilizing device 155 comprises two connecting plates 1551 which are respectively installed above the fixed frame 151 through screws, two sliding rods 1552 are respectively horizontally arranged between the two connecting plates 1551, two abutting plates 1553 are respectively arranged in a penetrating way through the sliding rods 1552, stabilizing telescopic cylinders 1554 are respectively installed on the two connecting plates 1551, and the telescopic ends of the two stabilizing telescopic cylinders 1554 are respectively connected with the two abutting plates 1553, the two abutting plates 1553 are arranged above the conveying belt 152 and are arranged on two sides of the valve core double-position piece 153.

The working principle is as follows: the utility model discloses a valve rod duplex position rolling disc 10 is used for placing the valve rod and rotates under the transmission of motor, valve rod assembly device 11, packing ring assembly device 12 and two sealing washer assembly device 13 that are used for the sealing washer cover-mounted on the valve rod that set up around its valve rod duplex position rolling disc 10 after assembling the valve rod, through the duplex position clamping head 226 centre gripping of second centre gripping conveyor 22 and carry to duplex spout 21, specifically through first pneumatic cylinder 222 control mounting panel 221 horizontal displacement, second pneumatic cylinder 225 control duplex position clamping head 226 vertical displacement, therefore realize the valve rod centre gripping of assembling into duplex spout 21 and impel the transport forward in proper order, in order to insert the well assembled valve rod top one end in the casing, therefore need through the rotatory arm 331 of first turning device 23 rotatory and splint duplex clamping effect 333, overturn the valve rod, after the valve core is turned over, the valve rod is clamped and installed on the shell conveying device 15 by the first clamping and conveying device 16, the shell is assembled by the shell assembling device 14 by the valve core double-station part 153 of the shell conveying device 15, so that the valve rod is clamped and inserted into the shell on the valve core double-station part 153 by the first clamping and conveying device 16, the assembled valve core is sequentially conveyed to the first ceramic chip assembling device 17, the second ceramic chip assembling device 18, the shell sealing ring assembling device 19 and the bottom ring assembling device 110 by the valve core double-station part 153 under the action of the conveying belt 152 for combination, the conveying belt 152 is provided with a plurality of stabilizing devices 155, the stabilizing devices 155 can clamp and stabilize the valve core assembled on the valve core double-station part 153, the valve core is prevented from moving out of position when assembled, the stability and the accuracy of the valve core are improved, and particularly, the opposite valve cores are clamped simultaneously under the telescopic action of the stabilizing telescopic cylinder 1554 by the two abutting plates 1553, two valve cores on the valve core double-station piece 153 are stabilized, the assembly of a ceramic plate, a sealing ring and a bottom ring is convenient, after the assembly of the valve core is finished, the valve core is clamped and conveyed to a corresponding detection device 3 through a third clamping and conveying device 4, the valve core is specifically placed on one group of stations on a detection station rotating disc 31, whether a station which is not filled with the valve core exists is detected through a photoelectric sensor 32, the position can be timely supplemented, the detection is timely supplemented, the station is rotated to a second overturning device 33 through the post-detection station rotating disc 31 through a motor, the assembled valve core is overturned, a rotating arm 331 is specifically driven to rotate through the motor, one end of the rotating arm 331 is provided with a double-end telescopic rod 332, two telescopic ends of the double-end telescopic rod 332 are connected with two oppositely arranged clamping plates 333, the double-end telescopic rod 332 drives the two clamping plates 333 to oppositely clamp, the valve core on the detection station is clamped to a discharging device 111, and the material is clamped by a clamping mechanism in the discharging device 111 to be discharged, so that automatic assembly, assembly and conveying are realized, the whole equipment is compact in structure and high in automation level, and the working efficiency and the yield are improved.

The utility model discloses valve rod assembly device 11, packing ring assembly device 12, sealing washer assembly device 13, casing assembly device 14, casing conveyor 15, first potsherd assembly device 17, second potsherd assembly device 18, shell sealing washer assembly device 19, foundation ring assembly device 110, discharging device 111 and the centre gripping head of tap valve core assembly machine have been in chinese patent number: 201821968259.5, and will not be described in detail herein.

It should be noted that the present invention mainly improves the above structure, and other functions, components and structures not mentioned can be implemented by adopting components and structures capable of implementing corresponding functions in the prior art when necessary.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a duplex position tap case equipment, which comprises a frame, install in the valve rod duplex position rolling disc of frame upside, around distributing in the valve rod assembly device of valve rod duplex position rolling disc periphery, packing ring assembly device and a plurality of sealing washer assembly device that are used for establishing the sealing washer cover on the valve rod, casing assembly device, a casing conveyor who is used for placing and carrying the casing, a centre gripping conveyor who is used for packing into the casing with the valve rod centre gripping, first potsherd assembly device, second potsherd assembly device, a shell sealing washer assembly device for establishing the sealing washer cover on the casing, end circle assembly device, a discharging device for carrying the case that assembles to next process, its characterized in that: the shell assembling device, the first ceramic piece assembling device, the second ceramic piece assembling device, the shell sealing ring assembling device and the bottom ring assembling device are sequentially arranged on one side of the shell conveying device, a transition conveying device for conveying a valve rod is arranged between the valve rod double-station rotating disc and the shell conveying device, a first clamping conveying device is arranged on one side of the transition conveying device, the first clamping conveying device is arranged between the transition conveying device and the shell conveying device, a detection device for detecting a valve element is arranged at one end of the shell conveying device, a third clamping conveying device is arranged on one side of the detection device, the third clamping conveying device is arranged on one side of a conveying station of the discharging device, the detection device is arranged between the shell conveying device and the discharging device, the shell conveying device comprises a fixing frame and a conveying belt, and the transition conveying device and the detection device are respectively arranged on two sides of the conveying belt, the fixing frame is installed on the rack through bolts, the conveying belt is installed on the fixing frame, a plurality of valve core double-position pieces are installed on the conveying belt, a linear notch is formed in the middle of the fixing frame, each valve core double-position piece is arranged on the inner side of the linear notch, and a plurality of stabilizing devices used for clamping and stabilizing the valve cores are further installed on the upper side of the fixing frame.

2. The double-station faucet valve core assembly equipment of claim 1, wherein: the transition conveying device comprises a double-workpiece sliding groove, a second clamping conveying device and a first overturning device are arranged at two ends of the double-workpiece sliding groove respectively, clamping stations of the second clamping conveying device and the first overturning device are arranged corresponding to the double-workpiece sliding groove, the second clamping conveying device corresponds to a station on the valve rod double-station rotating disc, the first clamping conveying device, the second clamping conveying device and the third clamping conveying device are identical in structure, and the clamping stations of the first overturning device and the first clamping conveying device are on the same horizontal line.

3. The double-station faucet valve core assembly equipment of claim 2, wherein: the second clamping and conveying device structure comprises a mounting plate, a first hydraulic cylinder, a horizontal sliding plate, a vertical sliding plate and a second hydraulic cylinder, wherein the first hydraulic cylinder is horizontally mounted on the mounting plate, the horizontal sliding plate is connected with the mounting plate through a sliding chute and a sliding block, the horizontal sliding plate is connected with the telescopic end of the first hydraulic cylinder to realize horizontal sliding, the second hydraulic cylinder is vertically mounted on the upper side of the horizontal sliding plate, the vertical sliding plate is vertically connected with the horizontal sliding plate in a sliding manner, the upper side of the vertical sliding plate is connected with the telescopic end of the second hydraulic cylinder to realize vertical sliding, and a double-station clamping head is mounted at the bottom of the vertical sliding plate.

4. The double-station faucet valve core assembly equipment of claim 3, wherein: the double-station clamping head of the first clamping and conveying device corresponds to the positions of the valve core double-station parts on the conveying belt, the double-station clamping head of the second clamping and conveying device corresponds to the positions of the double-station parts sliding groove and the valve rod double-station rotating disc, and the double-station clamping head of the third clamping and conveying device is correspondingly arranged above the valve core double-station parts of the conveying belt.

5. The double-station faucet valve core assembly equipment of claim 4, wherein: the detection device structure comprises a detection station rotating disc, wherein a plurality of groups of stations for placing the valve cores are arranged on the detection station rotating disc, one group of stations is four placing stations, photoelectric sensors are arranged above one group of stations for placing the valve cores, and each photoelectric sensor is installed on the rack through a fixing plate.

6. The double-station faucet valve core assembly equipment of claim 5, wherein: and the double-station clamping head of the third clamping and conveying device corresponds to one group of stations for placing the valve cores in the detection station rotating disc.

7. The double-station faucet valve core assembly equipment of claim 5, wherein: the automatic detection device is characterized in that a second overturning device is arranged on one side of the detection station rotating disc, the second overturning device is identical to the first overturning device in structure, the second overturning device comprises a rotating arm driven to rotate by a motor, a double-end telescopic rod is arranged at one end of the rotating arm, two telescopic ends of the double-end telescopic rod are connected with two oppositely arranged clamping plates, and one group of valve core clamping devices of the detection station rotating disc is overturned to a discharging device through the clamping plates.

8. The double-station faucet valve core assembly equipment of claim 7, wherein: and the clamping plates of the first turnover device are respectively kept on the same parallel line with the double-workpiece sliding groove and the double-station clamping head of the first clamping and conveying device.

9. The double-station faucet valve core assembly equipment of claim 1, wherein: the stabilizing device comprises two connecting plates which are respectively arranged above the fixing frame through screws, two sliding rods are horizontally arranged between the connecting plates respectively, two abutting plates are arranged on the sliding rods in a penetrating mode respectively, two stabilizing telescopic cylinders are arranged on the connecting plates, two telescopic ends of the stabilizing telescopic cylinders are connected with the two abutting plates respectively, and the two abutting plates are arranged above the conveying belt and are arranged on two sides of the valve core double-station piece.