CN114799870B - Production line of fire control shower head - Google Patents

Abstract

The invention provides a production line of a fire-fighting spray head, which comprises a control system and an operation system connected with the control system, wherein the operation system comprises a transmission mechanism for transmitting a spray head valve body, and a valve plate feeding mechanism, a dispensing mechanism and an assembling mechanism which are sequentially arranged along the transmission direction of the transmission mechanism; then, the glue dispensing mechanism is started, and glue dispensing is carried out through the glue dispensing mechanism; then entering an assembly mechanism; the glass beads are assembled and locked by an assembling mechanism, so that the mechanical assembly of the spray header is completed; so as to avoid the problems of long assembly time and low qualification rate in manual assembly.

Description

Production line of fire control shower head

Technical Field

The invention relates to a production and preparation process of a fire-fighting spray header, in particular to a production line of the fire-fighting spray header.

Background

The fire-fighting spray header is a terminal fire-fighting component of the full-automatic sprinkling fire-extinguishing system, almost manual operation is needed in the assembly process of the fire-fighting spray header at the present stage, the working process is complex, and time and labor are wasted; meanwhile, when the valve plate is assembled, the valve plate is required to be installed in the valve body, then the glass beads are required to be installed in the valve body, and then the valve plate is screwed, so that in the process, the manual operation method is not easy to cause low assembly qualification rate, for example, torque is difficult to control when screwing the screw manually, and the born load is too large, so that the spray head is wrongly exploded, and the like. For this reason, it is highly desirable to design a mechanized assembly line instead of manual assembly.

Disclosure of Invention

Therefore, the invention provides a production line of the fire-fighting spray header, which can realize the mechanized assembly of the fire-fighting spray header.

In order to achieve the above purpose, the technical scheme provided by the invention is as follows:

the production line of the fire-fighting spray header comprises a control system and an operation system connected with the control system, wherein the operation system comprises a transmission mechanism for transmitting a spray header valve body, and a valve plate feeding mechanism, a glue dispensing mechanism and an assembling mechanism which are sequentially arranged along the transmission direction of the transmission mechanism, wherein the valve plate feeding mechanism is used for connecting a valve plate supply device so as to transfer a valve plate onto the spray header valve body on the transmission mechanism; the assembly mechanism comprises a screw assembly component and a glass bead feeding component, the screw assembly component comprises a first lifting driver, a screw assembly machine and a screw guide block, the screw guide block is provided with a vertical through hole and an inclined guide hole communicated with the vertical through hole, the first lifting driver is connected with the screw assembly machine, a rotating shaft of the screw assembly machine penetrates through the vertical through hole of the screw guide block, the inclined guide hole is used for being connected with a screw feeding device, the glass bead feeding component comprises a clamping seat and an ejection tube, the ejection tube is used for being connected with the glass bead feeding device, the tail end of the ejection tube extends to the lower position of the screw guide block, and the clamping seat corresponds to the tail end of the ejection tube and is used for clamping glass beads ejected by the ejection tube.

Further, the transmission mechanism comprises a linear chute, a return material transmission belt, a front-end propelling device, a front-end switching device and a rear-end switching device, wherein the linear chute is used for transmitting a spray header tool carrying a spray header valve body, and the valve plate feeding mechanism, the dispensing mechanism and the assembly mechanism are sequentially arranged along the transmission direction of the linear chute; the rear end of the linear chute is communicated with the front end of the return conveying belt through a first transition channel, and the rear end of the return conveying belt is communicated with the front end of the linear chute through a second transition channel; the front end pushing device corresponds to the front end of the linear chute so as to push the spray header tool into the linear chute from the front end of the linear chute, and the rear end switching device is arranged on the first transition channel so as to transfer the spray header tool output from the rear end of the linear chute to the front end of the return conveying belt; the front-end switching device is arranged on the second transition channel so as to transfer the spray header tool output from the rear end of the return material conveying belt to the front end of the linear chute.

Further, the transmission mechanism further comprises a positioning device, and the positioning device is arranged at the side end of the linear chute to position the spray header tool in the linear chute.

Further, the operation system further comprises a feeding channel and a valve body feeding mechanism, wherein the valve body feeding mechanism is positioned at the front end of the valve plate feeding mechanism and is also positioned between the feeding channel and the transmission mechanism, so that the spray header valve body on the feeding channel is transferred to a tool on the transmission mechanism.

Further, the valve body feeding mechanism comprises a mounting seat, a rotary driver, a swinging plate, a vertical connecting plate, a transverse connecting plate and a grabbing component, wherein an inverted U-shaped limit slot hole and a transverse horizontal guide rail are arranged on the mounting seat, the rotary driver is fixed on the mounting seat, the vertical connecting plate is slidably assembled on the horizontal guide rail, a vertical guide rail is arranged on the vertical connecting plate, and the transverse connecting plate is slidably assembled on the vertical guide rail; one end of the swinging plate is connected to the rotating shaft of the rotary driver, the other end of the swinging plate is provided with a long slot, the transverse connecting plate is provided with a limiting pin shaft, and the limiting pin shaft is arranged in the long slot of the swinging plate and the limiting slot of the mounting seat in a penetrating manner; the grabbing component is assembled on the transverse connecting plate.

Further, the valve plate feeding mechanism comprises a mounting seat, a rotary driver, a swinging plate, a vertical connecting plate, a transverse connecting plate and a grabbing component, wherein an inverted U-shaped limit slot hole and a transverse horizontal guide rail are arranged on the mounting seat, the rotary driver is fixed on the mounting seat, the vertical connecting plate is slidably assembled on the horizontal guide rail, a vertical guide rail is arranged on the vertical connecting plate, and the transverse connecting plate is slidably assembled on the vertical guide rail; one end of the swinging plate is connected to the rotating shaft of the rotary driver, the other end of the swinging plate is provided with a long slot, the transverse connecting plate is provided with a limiting pin shaft, and the limiting pin shaft is arranged in the long slot of the swinging plate and the limiting slot of the mounting seat in a penetrating manner; the grabbing component is assembled on the transverse connecting plate.

Further, the glass bead feeding assembly further comprises a plurality of switch devices, and the switch devices are sequentially arranged along the length direction of the ejection tube.

Further, the clamping seat comprises a first part and a second part which are oppositely arranged, the first part comprises a first translation driver and a first clamping block, the first translation driver is connected with the first clamping block to drive the first clamping block to be close to or far away from a to-be-processed spray header valve body, and the first clamping block is provided with an accommodating notch; the second part comprises a second translational driver and a second clamping block, wherein the second translational driver is connected with the second clamping block to drive the second clamping block to be close to or far away from the shower head valve body to be processed.

Further, the dispensing mechanism comprises a second lifting driver and a dispensing machine, wherein the second lifting driver is fixed on the mounting frame, and a telescopic driving rod of the second lifting driver is connected with the dispensing machine to drive the dispensing machine to lift.

Further, the automatic box loading device also comprises a pressure measuring mechanism and a box loading mechanism, wherein a first carrying mechanism is arranged between the pressure measuring mechanism and the tail end of the transmission mechanism (particularly a linear chute); and a second carrying mechanism is arranged between the pressure measuring mechanism and the boxing mechanism.

The pressure measuring mechanism includes: the hydraulic self-locking device comprises a fixed bottom plate, a plurality of mechanical claw pairs and a plurality of opening and closing driving mechanisms, wherein the fixed bottom plate is provided with a plurality of positioning tables in an array manner, two sides of each positioning table are respectively provided with a mounting through groove, and the fixed bottom plate corresponding to each positioning table is provided with a hydraulic self-locking mechanism; the mechanical claw pairs are penetrated through the fixed bottom plate and can be fixed on the fixed bottom plate in an openable and closable manner, are symmetrically arranged at two sides of the positioning table, and are respectively provided with a tension spring at two sides, and are connected with the fixed bottom plate or fixedly connected with the adjacent mechanical claw pairs; the plurality of opening and closing driving mechanisms are arranged between the mechanical claw pairs at the lower part of the fixed bottom plate.

The technical scheme provided by the invention has the following beneficial effects:

when the spray head valve body is operated, the spray head valve body is conveyed by the conveying mechanism, and the valve plate feeding mechanism firstly transfers the valve plate to the spray head valve body on the conveying mechanism; then, the glue dispensing mechanism is started, and glue dispensing is carried out through the glue dispensing mechanism; then entering an assembly mechanism; the glass beads are assembled and locked by an assembling mechanism, so that the mechanical assembly of the spray header is completed; so as to avoid the problems of long assembly time and low qualification rate in manual assembly.

Meanwhile, when the glass beads are assembled, the ejector tube ejects the glass beads, and the clamping seat clamps and positions the glass beads ejected by the ejector tube to realize pre-assembly; then the screw enters the vertical through hole through the inclined guide hole of the screw guide block and is output by the vertical through hole, so that the pre-assembly of the screw is realized; finally, the first lifting driver drives the screw assembly machine to move downwards, and the rotating shaft of the screw assembly machine passes through the vertical through hole of the screw guide block, so that the screw can be accurately abutted and locked; thus completing the loading of the glass beads. The glass beads and the screw are accurate in pre-fixing positions, and the screw assembling machine can be used for accurately butting the screws and achieving locking.

Drawings

FIG. 1 is a schematic diagram showing the overall structure of a production line of a fire sprinkler head according to an embodiment;

FIG. 2 is a schematic diagram showing the structure of a transmission mechanism in the embodiment;

FIG. 3 is an enlarged schematic view of area A of FIG. 2;

FIG. 4 is an enlarged schematic view of region B of FIG. 2;

FIG. 5 is a schematic view of a first positioning device according to an embodiment;

FIG. 6 is a schematic diagram of a showerhead tool according to an embodiment;

fig. 7 is a schematic perspective view of a valve body feeding mechanism in an embodiment;

FIG. 8 is a schematic perspective view of a valve body feeding mechanism at another angle in an embodiment;

FIG. 9 is a schematic diagram showing a part of the structure of the valve body feeding mechanism in an exploded manner;

fig. 10 is a schematic diagram showing a part of a structure of a valve body feeding mechanism in a second embodiment;

FIG. 11 is a front view of the mount of the embodiment;

fig. 12 is a schematic structural diagram of a valve plate feeding mechanism in the embodiment;

FIG. 13 is a schematic perspective view showing a portion of the dispensing mechanism and the assembling mechanism according to the first embodiment;

FIG. 14 is a schematic diagram showing a perspective view of a dispensing mechanism and an assembling mechanism according to a second embodiment;

FIG. 15 is a schematic perspective view of a dispensing mechanism and assembly mechanism according to a third embodiment;

FIG. 16 is a cross-sectional view of a screw guide block according to an embodiment;

FIG. 17 is a schematic view of the structure of the first clamping block according to the embodiment;

FIG. 18 is a perspective view showing a structure in the embodiment;

FIG. 19 is a transverse cross-sectional view of an embodiment;

FIG. 20 is an enlarged schematic view of area C of FIG. 19;

FIG. 21 is an enlarged schematic view of area D of FIG. 19;

fig. 22 is a perspective view showing a pair of grippers according to the embodiment.

Detailed Description

For further illustration of the various embodiments, the invention is provided with the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments and together with the description, serve to explain the principles of the embodiments. With reference to these matters, one of ordinary skill in the art will understand other possible embodiments and advantages of the present invention. The components in the figures are not drawn to scale and like reference numerals are generally used to designate like components.

The invention will now be further described with reference to the drawings and detailed description.

The embodiment provides a production line of a fire-fighting spray header, which comprises a control system and an operation system connected with the control system, and particularly, the control system can adopt a PLC control system applied to automatic equipment in the prior art, and can control all mechanisms of the operation system so as to realize the coordinated operation of all mechanisms.

Specifically, referring to fig. 1 to 17, the operation system includes a transmission mechanism 100 for transmitting the showerhead valve body 5, and a valve sheet feeding mechanism 300, a dispensing mechanism 400 and an assembling mechanism 500 sequentially disposed along a transmission direction of the transmission mechanism 100, that is, the showerhead valve body 5 transmitted by the transmission mechanism 100 sequentially passes through the valve sheet feeding mechanism 300, the dispensing mechanism 400 and the assembling mechanism 500. The valve plate feeding mechanism 300 is used for connecting a valve plate supply device to transfer the valve plate to the spray header valve body 5 on the transmission mechanism 100, so as to realize feeding of the valve plate. The dispensing mechanism 400 is connected with a glue supply device and is used for dispensing glue to the shower head valve body 5 with the valve plate.

With continued reference to fig. 13-17, the assembly mechanism 500 includes a screw assembly and a glass bead loading assembly, and in particular, the screw assembly and the glass bead loading assembly are mounted on a mounting frame 510. The screw assembly comprises a first lifting driver 521 (specifically, a driving cylinder), a screw assembly machine 522 and a screw guide block 523, wherein the screw guide block 523 is provided with a vertical through hole 5231 and an inclined guide hole 5232 communicated with the vertical through hole 5231, the first lifting driver 521 is connected with the screw assembly machine 522, a rotating shaft of the screw assembly machine 522 is arranged in the vertical through hole 5231 of the screw guide block 523 in a penetrating manner, and the inclined guide hole 5232 is used for connecting a screw feeding device. The glass bead feeding assembly comprises a clamping seat and an ejection tube 531, wherein the ejection tube 531 is used for being connected with a glass bead feeding device, the tail end of the ejection tube 531 extends to the lower position of the screw guide block 523, and the clamping seat corresponds to the tail end of the ejection tube 531 and is used for clamping glass beads ejected by the ejection tube 531.

When the assembling mechanism performs assembling operation, the ejection pipe 531 ejects glass beads, and the clamping seat clamps and positions the glass beads ejected by the ejection pipe 531, so that the glass beads can be accurately pre-fixed on the shower head valve body 5, and pre-assembling is realized; afterwards, the screw enters the vertical through hole 5231 through the inclined guide hole 5232 of the screw guide block 523 and is output by the vertical through hole 5231, so that the screw can accurately fall onto the spray header valve body 5, and the pre-assembly of the screw is realized. Finally, the first lifting driver 521 drives the screw assembling machine 522 to move downwards, and the rotating shaft of the screw assembling machine 522 passes through the vertical through hole 5231 of the screw guide block 523, so that the screw can be accurately abutted and locked; thereby completing the assembly. The pre-fixing positions of the glass beads and the screws are accurate, and the screw assembling machine 522 can accurately butt the screws and achieve locking.

Thus, the spray header valve body 5 is installed into the valve plate through the valve plate feeding mechanism 300, the dispensing mechanism 400 is used for dispensing, and the assembling mechanism 500 is used for assembling glass beads and locking; thereby realizing mechanical assembly. Has the characteristics of high operation efficiency and high qualification rate.

Further, with continued reference to fig. 2 to 6, in this embodiment, the conveying mechanism 100 includes a linear chute 111, a return conveying belt 112, a front end pushing device 121, a front end switching device 123, and a rear end switching device 122, where the linear chute 111 is used for conveying the showerhead tool 1 carrying the showerhead valve body 5, that is, the showerhead tool 1 is used for fixing the showerhead valve body 5. The valve plate feeding mechanism 300, the dispensing mechanism 400 and the assembling mechanism 500 are sequentially arranged along the transmission direction of the linear chute 111; the rear end of the linear chute 111 is communicated with the front end of the return material conveying belt 112 through a first transition channel 113, and the rear end of the return material conveying belt 112 is communicated with the front end of the linear chute 111 through a second transition channel 114; thus, a circulating transmission channel is formed.

The front end pushing device 121 corresponds to the front end of the straight chute 111, so that the shower head tooling 1 is pushed into the straight chute 111 from the front end of the straight chute 111, and therefore, each time the front end pushing device 121 pushes into one shower head tooling 1, the shower head tooling 1 in the straight chute 111 advances by one position, and the rear end of the straight chute 111 moves out of one shower head tooling 1, and therefore, the shower head tooling 1 moves on the straight chute 111.

The rear end switching device 122 is disposed on the first transition channel 113, so as to transfer the shower head tooling 1 output from the rear end of the linear chute 111 to the front end of the return conveying belt 112; namely, after the rear end of the linear chute 111 moves out of one shower head tooling 1, the rear end is transferred to the front end of the return material conveying belt 112 through the rear end switching device 122, and is conveyed to the second transition channel 114 through the return material conveying belt 112; specifically, the return material conveying belt 112 may employ a belt conveying apparatus or the like in the related art.

The front end switching device 123 is disposed on the second transition channel 114, so as to transfer the shower head tooling 1 output from the rear end of the return material conveying belt 112 to the front end of the linear chute 111; namely, when the feed back conveying belt 112 outputs a shower head tool 1, the shower head tool is transferred to the front end of the linear chute 111 through the front end switching device 123, so that one cycle is realized; thus, the cyclic supply of the spray header tool 1 can be well realized.

Specifically, the positioning device is further included, and the positioning device is arranged at the side end of the linear chute 111 to position the spray header tool 1 in the linear chute 111, so that the spray header tool 1 on the linear chute 111 can be well positioned, and the machining precision is guaranteed.

Further, referring to fig. 6, in this embodiment, a positioning notch 2 is provided at a side end of the shower head tool 1. The positioning means has two structures, respectively defined as a first positioning means 131 and a second positioning means 132. The first positioning device 131 includes a driving cylinder (defined as a first driving cylinder 1311) and a positioning rod 1312, and the first driving cylinder 1311 is fixedly disposed, such as fixed on a frame. The positioning rod 1312 is arranged on the first driving cylinder 1311, so as to approach or depart from the linear chute 111 by the driving of the first driving cylinder 1311; that is, when the first driving cylinder 1311 drives the positioning rod 1312 to approach the linear chute 111, the positioning rod 1312 can be inserted into the positioning notch 2 of the shower head tool 1, so as to position a single shower head tool 1. The first positioning device 131 is mainly configured to position a single shower head tool.

Specifically, the second positioning device 132 includes a guide rail 1321, a positioning plate 1322, and a driving cylinder (defined as a second driving cylinder 1323), where the guide rail 1321 is perpendicular to the linear chute 111, the positioning plate 1322 is slidably assembled on the guide rail 1321, and a plurality of positioning protrusions 1324 corresponding to the linear chute 111 are disposed at intervals, and the second driving cylinder 1323 is in driving connection with the positioning plate 1322, so as to drive the positioning plate 1322 to approach or separate from the linear chute 111. That is, when the second driving cylinder 1323 drives the positioning plate 1322 to approach the linear chute 111, the positioning protrusions 1324 on the positioning plate 1322 can be simultaneously inserted into the positioning notches 2 of the plurality of shower head tools 1, so as to position the plurality of shower head tools 1.

The single positioning mode of the first positioning device 131 and the multiple positioning modes of the second positioning device 132 are suitable for positioning in different situations, and can be specifically selected by those skilled in the art according to practical situations. Of course, in other embodiments, the structure and positioning manner of the positioning device are not limited thereto.

Specifically, in this embodiment, the linear chute 111 and the return conveying belt 112 are disposed in parallel, so that the layout space is saved, and the position of the shower head tool 1 is not affected.

The front end pushing device 121 comprises a pushing cylinder 1211 and a pushing plate 1212, wherein the pushing cylinder 1211 is in driving connection with the pushing plate 1212 to drive the pushing plate 1212 to approach or depart from the front end of the linear chute 111; when the pushing cylinder 1211 drives the pushing plate 1212 to move close to the front end of the linear chute 111, the spray header tool 1 positioned at the front end of the linear chute 111 is pushed into the linear chute 111, so that transmission is realized; after completion, the push plate 1212 is driven away to effect reset. The device is simple in structure and easy to realize. Of course, in other embodiments, the implementation structure of the front-end propulsion device 121 is not limited thereto.

The back-end switching device 122 includes a first translational driver 1221 and a first push plate 1222, where the first translational driver 1221 is connected to the first push plate 1222 to drive the first push plate 1222 to reciprocate on the first transition channel 113, so as to push the shower head tool 1 output from the back end of the linear chute 111 to the front end of the feed back conveyor 112. That is, when the rear end of the linear chute 111 outputs a shower head tool 1, the first translational driver 1221 drives the first push plate 1222 to move, so as to push the shower head tool 1 to the front end of the return material conveying belt 112, and convey the shower head tool 1 by the return material conveying belt 112; after completion, the first translation driver 1221 drives the first pusher 1222 into reset.

More specifically, a first sensor (not shown) for sensing whether the shower head tool 1 is in place is disposed on the first push plate 1222, and when the shower head tool 1 is output through the rear end of the linear chute 111, the shower head tool 1 is sensed by the first sensor. The first sensor transmits the sensing signal to the control system, and the control system further controls the first translation driver 1221 to drive the first push plate 1222 to move, so as to realize the transfer of the shower head tool 1.

The front end switching device 123 includes a second translation driver 1231 and a second pushing plate 1232, where the second translation driver 1231 is connected to the second pushing plate 1232 to drive the second pushing plate 1232 to reciprocate on the second transition channel 114, so as to push the showerhead tool 1 output from the rear end of the return conveying belt 112 to the front end of the linear chute 111. That is, when the rear end of the feed back conveyor 112 outputs a shower head tool 1, the second translation driver 1231 drives the second push plate 1232 to move, so as to push the shower head tool 1 to the front end of the linear chute 111; after completion, the second translation driver 1231 drives the second push plate 1232 to reset.

Similarly, a second sensor 142 for sensing whether the shower head tool 1 is in place is disposed on the second pushing plate 1232. When the shower head tooling 1 is output through the rear end of the return material conveying belt 112, the shower head tooling is sensed by the second sensor 142. The second sensor 142 transmits an induction signal to the control system, and the control system controls the second translation driver 1231 to drive the second push plate 1232 to move, so as to realize the transfer of the shower head tooling 1.

Specifically, the first translation driver 1221 and the second translation driver 1231 may be a flat pushing structure such as a cylinder or other driving devices capable of realizing flat pushing.

Of course, in other embodiments, the back-end switching device 122 and/or the front-end switching device 123 may also employ other transfer devices such as flipping, grabbing, etc.

Further, in this embodiment, the shower head tooling 1 is provided with a positioning block 3 for assembling a shower head valve body, and specifically, the positioning block 3 is a conical spiral positioning block made of nylon, and in this embodiment, five nylon sheets (not limited to five in other embodiments) are uniformly distributed on the periphery of a center column of the positioning block and extend obliquely outwards at a certain angle. Therefore, the spray heads with different sizes can be used by means of the deformation of nylon, so that the requirements of successful feeding and positioning are met, and the practicability is wider.

Further, the operation system further includes a feeding channel 201 and a valve body feeding mechanism 200, and specifically, the feeding channel 201 is used for connecting with a valve body feeding device to realize feeding of the shower head valve body 5. The valve body feeding mechanism 200 is located at the front end of the valve plate feeding mechanism 300, and is further located between the feeding channel 201 and the conveying mechanism 100 (specifically, the linear chute 111 of the conveying mechanism 100), so as to transfer the shower head valve body 5 on the feeding channel 201 onto a tool (i.e., the shower head tool 1) on the linear chute 111. In this way, the mechanical transfer of the shower head valve body 5 can be realized, and then the shower head valve body enters the valve body feeding mechanism 300 to start the assembly of parts.

Specifically, with continued reference to fig. 7 to 11, the valve body feeding mechanism 200 includes a mounting seat 210, a rotary driver (specifically, a driving motor 250), a swinging plate 251, a vertical connection plate 221, a lateral connection plate 231 and a grabbing component 240, where an inverted "U" shaped limit slot 211 and a horizontal guide rail 212 disposed transversely are disposed on the mounting seat 210, specifically, as shown in fig. 11, the inverted "U" shaped limit slot 211 includes a transverse slot hole 2111 extending transversely and vertical slots communicating with left and right ends of the transverse slot hole 2111 (defining the left vertical slot hole as a left vertical slot hole 2112 and the right vertical slot hole as a right vertical slot hole 2113), and the vertical slot holes extend downward, so as to form an inverted "U" structure.

The driving motor 250 is fixed on the mounting base, and the vertical connection plate 221 is slidably assembled on the horizontal guide rail 212, so that the vertical connection plate 221 can horizontally translate left and right. The vertical connecting plate 221 is provided with a vertical guide rail 222, and the transverse connecting plate 231 is slidably assembled on the vertical guide rail 222; in this way, the transverse web 231 can be vertically translated up and down.

One end of the swinging plate 251 is connected to the rotating shaft of the driving motor 250, the other end is provided with a long slot 2511, the transverse connecting plate 231 is provided with a limit pin 233, and the limit pin 233 is arranged in the long slot 2511 of the swinging plate 251 and the limit slot 211 of the mounting seat 210 in a penetrating manner; the gripping assembly 240 is mounted on the transverse web 231.

In operation, the driving motor 250 drives the swinging plate 251 to swing, and the swinging of the swinging plate 251 drives the limit pin 233 and the transverse connection plate 231 to move on the inverted "U" track of the limit slot 211, for example, in the process that the swinging plate 251 swings from the left side to the right side, the limit pin 233 moves upward from the bottom of the left vertical slot 2112 and enters the transverse slot 2111, and at this time, the transverse connection plate 231 and the grabbing assembly 240 are lifted synchronously; after the limit pin shafts 233 enter the horizontal slot holes 2111, the limit pin shafts 233 are driven to translate from the left end to the right end of the horizontal slot holes 2111 along with the continued rightward swinging of the swinging plate 251, and at the moment, the vertical connecting plates 221, the horizontal connecting plates 231 and the grabbing components 240 are synchronously translated rightward; then, the swing plate 251 continues to swing rightward, so as to drive the limit pin 233 to move downwards from the top of the right vertical slot 2113 to the bottom, and at this time, the transverse connection plate 231 and the grabbing component 240 are synchronously lowered; in summary, the swing plate 251 swings from the left side to the right side, and drives the grabbing assembly 240 to move up to the right side and move down to the right side. Similarly, the swinging plate 251 swings from the right side to the left side, and then a reverse action is formed, that is, the grabbing component 240 is driven to move up to the right side, translate to the left side and move down to the left side.

Defining that when the limit pin 233 is located at the bottom of the left vertical slot 2112, the grabbing component 240 is located at the first station, and when the limit pin 233 is located at the bottom of the right vertical slot 2113, the grabbing component 240 is located at the second station. The end of the feeding channel 201 corresponds to the first station, and the linear chute 111 of the conveying mechanism 100 is at the second station. The driving motor 250 drives the swinging plate 251 to swing left and right, so that the limiting pin shaft 233 reciprocates in the limiting slot hole 211, and meanwhile, the grabbing component 240 is driven to switch between a left station and a right station (a first station and a second station). When the grabbing component 240 reaches the first station, grabbing the valve body (i.e. the spray header valve body 5) of the feeding channel 201, and transferring to the second station, placing the valve body on the spray header tool 1 of the linear chute 111, so as to realize mechanized transfer.

The valve body feeding mechanism 200 provided by the embodiment is simple in structure, low in cost and easy to realize.

Further, in this embodiment, the vertical connection plate 221 is further provided with a baffle plate 223, the baffle plate 223 is located below the transverse connection plate 231, and the transverse connection plate 231 is provided with an elastic buffer member 232 (such as a gas spring) corresponding to the baffle plate 223; so set up, when snatch the subassembly 240 by the upward-downward movement, the synchronous downward movement of transverse connection board 231 at this moment, the elastic buffer member 232 can butt on the baffle 223 and realize the buffering when moving down to certain position, reduces the speed of moving down, and the speed is too fast when preventing to load into the frock with the valve body and lead to the collision damage.

Specifically, the number of the horizontal guide rails 212 is two, the two horizontal guide rails are respectively located at the upper side and the lower side of the limiting slot hole 211, the upper end and the lower end of the vertical connecting plate 221 are respectively assembled on the horizontal guide rails 212 at the upper side and the lower side, the vertical guide rails 222 are arranged at the middle positions of the vertical connecting plate 221, so that the vertical connecting plate 221 is uniformly stressed, and the horizontal translation of the vertical connecting plate 221 is more stable. Of course, this is not limiting in other embodiments.

The middle part of the transverse connection plate 231 is assembled on the vertical guide rail 222, the first end of the transverse connection plate 231 is provided with the limit pin 233, and the grabbing component 240 is assembled on the second end of the transverse connection plate 231. So configured, the transverse web 231 is also more uniformly stressed and the vertical translation is more stable. Of course, this is not limiting in other embodiments.

The mounting base 210 is further provided with two position sensors 261, and the two position sensors 261 are respectively located at the left side and the right side of the limit slot 211 to respectively sense the swinging position of the swinging plate 251. So configured, in actual use, the two position sensors 261 are used to connect to a control system, and when the swing plate 251 swings to the position sensor 261 corresponding to the left side, such as when the leftmost position is reached, the position sensor 261 senses the position of the swing plate 251 and outputs a signal to the control system, and the control system controls the driving motor 250 to stop or reverse, etc.; preventing the drive motor 250 from doing idle work. The same applies to the case where the swing plate 251 swings to the rightmost side.

The grabbing component 240 is a clamping component for grabbing through clamping, and specifically, the structure of the clamping component is as follows: the clamping assembly comprises a clamping cylinder 241 and a jaw 242 arranged on the clamping cylinder 241, the clamping cylinder 241 being fixed on the transverse connection plate 231. When reaching the first station, the clamping cylinder 241 drives the jaw 242 to retract to clamp the valve body on the feed channel, and when reaching the second station, the clamping cylinder 241 drives the jaw 242 to open to release the valve body. The clamping structure is adopted, the structure is simple, and the implementation is easy. Of course, in other embodiments, the gripping assembly 240 may be an adsorption assembly that performs gripping by vacuum adsorption, or the like.

Of course, in other embodiments, the structure of the valve body feeding mechanism 200 is not limited thereto.

Further, referring to fig. 12, in this embodiment, the valve plate feeding mechanism 300 includes a mounting seat 310, a rotary driver (also a driving motor), a swinging plate, a vertical connection plate 321, a horizontal connection plate 331, and a grabbing assembly 340, where the valve plate feeding mechanism 300 is substantially the same as the valve body feeding mechanism 200, that is, the connection relationship between each component of the valve plate feeding mechanism 300 is substantially the same as the connection relationship between components of the valve body feeding mechanism 200, and the same actions can be implemented. Meanwhile, the output end of the valve plate supply device is located at a first station of the valve plate feeding mechanism 300, and the valve plate feeding mechanism 300 transfers the valve plate located at the first station to the spray header valve body 5 of the second station through the grabbing component 340. The main difference between the valve plate feeding mechanism 300 and the valve body feeding mechanism 200 is that: the grabbing component 340 of the valve plate feeding mechanism 300 is an adsorption component for grabbing through vacuum adsorption, the valve plate structure is small, and better transfer can be realized by transferring the valve plate in a vacuum adsorption mode. Of course, in other embodiments, the valve plate feeding mechanism 300 is not limited thereto, and may be completely different from the valve body feeding mechanism 200 described above.

Specifically, the dispensing mechanism 400 includes a second lifting driver 410 and a dispensing machine 420, the second lifting driver 410 is fixed on the mounting frame 510, and a telescopic driving rod of the second lifting driver 410 is connected with the dispensing machine 420 to drive the dispensing machine 420 to lift, so as to realize dispensing operation, and the structure is simple. Of course, in other embodiments, the structure of the dispensing mechanism 400 is not limited thereto.

Specifically, in the assembly mechanism 500, the mounting frame 510 is provided with a yielding window 511, the ejection tube 531 is fixed at the rear end of the mounting frame 510, and the tail end of the ejection tube 531 passes through the yielding window 511 and extends to the lower position of the screw guide block 523. Therefore, the fixing structure of the ejection tube 531 is arranged at the rear part deviating from the station, so that the layout space is saved, and the mechanism is more compact.

Specifically, the ejector tube 531 is a transparent tube for transporting glass beads, and the transparent tube is convenient for visual confirmation of the internal condition.

Specifically, the glass bead feeding assembly further includes a plurality of switch devices 5311, in this embodiment, five switch devices 5311 (only two switch devices 5311 are shown in fig. 2 and 3), and the five switch devices 5311 are sequentially disposed along the length direction of the ejector tube 531; by the cooperation of the five switching devices 5311, the output of a single glass bead can be achieved. If the first switch device is used for blocking all glass beads, when one glass bead is to be put down independently, the second switch device is used for blocking other glass beads except the first glass bead, then the first switch device is used for unblocking, and the first glass bead slides onto the shower head valve body 5 from the ejection track independently; meanwhile, the positions of the third switch device, the fourth switch device and the fifth switch device can be set to be detection stations, subsequent glass beads can be detected, and abnormal glass beads can be screened out.

More specifically, the switch 5311 includes a cylinder and a blocking block, the ejector tube 531 is provided with a lateral opening, the blocking block is located in the lateral opening, and the cylinder is connected with the blocking block to drive the blocking block to extend into the ejector tube 531 or move out of the ejector tube 531, so that when the blocking block extends into the ejector tube, the glass beads are blocked, and when the blocking block moves out of the ejector tube 531, the blocking is released. Meanwhile, when abnormal glass beads are detected, the glass beads can be independently taken out from the lateral opening positions; if the glass beads blocked by the fourth switching device are detected to be abnormal, the second switching device and the fourth switching device keep in a blocking state, the blocking block of the third switching device is removed, and abnormal glass beads are removed at the same time; the abnormal glass beads are more simply removed by sieving. Of course, in other embodiments, the number and configuration of the switch devices 5311 are not limited thereto, or the switch devices 5311 need not be employed.

The clamping seat comprises a first part 532 and a second part 533 which are oppositely arranged, and the spray header valve body 5 entering the working station is positioned between the first part 532 and the second part 533; the first portion 532 includes a first translational driver 5321 (in this embodiment, a driving cylinder) and a first clamping block 5322, where the first translational driver 5321 is connected to the first clamping block 5322 to drive the first clamping block 5322 to approach or depart from the showerhead valve body 5 to be machined, and the first clamping block 5322 has a receiving notch 5323, in this embodiment, a U-shaped receiving notch 5323; the second portion 533 includes a second translational driver 5331 (in this embodiment, a driving cylinder) and a second clamping block 5332, and the second translational driver 5331 is connected to the second clamping block 5332 to drive the second clamping block 5332 toward or away from the showerhead valve body 5 to be machined. So set up, when shower head valve body 5 reachd predetermined station, first translation driver 5321 drive first grip block 5322 is close to shower head valve body 5, and at this moment, glass pearl is from ejection tube 531 roll-off, because the defect of notch 5323 is held to the U-shaped of first grip block 5322, glass pearl can not launch out appointed scope, afterwards, second translation driver 5331 drive second grip block 5332 is close to, first grip block 5322 and second grip block 5332 hold glass pearl jointly, stand up the glass pearl, realize the pre-fixing of glass pearl. When the screw locking operation is completed, the clamping state is released, and the first clamping block 5322 and the second clamping block are reset 5332.

Of course, in other embodiments, the structure of the mounting mechanism 500 is not limited thereto.

Further, in order to further complete the subsequent operation, in this embodiment, the operation system further includes a pressure measuring mechanism 600 and a boxing mechanism 700, where a first carrying mechanism 801 is disposed between the pressure measuring mechanism 600 and the end of the conveying mechanism 100 (specifically, the linear chute 111); in this way, the first carrying mechanism 801 can take out the assembled shower head from the linear chute 111 and transfer the shower head to the pressure measuring mechanism 600 for pressure measurement. A second carrying mechanism 802 is arranged between the pressure measuring mechanism 600 and the boxing mechanism 700; after the pressure measurement is completed, the second handling mechanism 802 transfers the showerhead on the pressure measurement mechanism 600 to the boxing mechanism 700 for boxing and packaging. The integration of assembly, detection and boxing is realized.

Specifically, in this embodiment, the first carrying mechanism 801 and the second carrying mechanism 802 each include a driving device, a transmission rail connected to the driving device, a cross beam slidably mounted on the transmission rail, and a plurality of gripping devices disposed on the cross beam. Taking the first carrying mechanism 801 as an example, the driving device drives the transmission rail, so as to drive the cross beam to slide between a first position corresponding to the linear chute 111 and a second position corresponding to the pressure measuring mechanism 600, and meanwhile, the grabbing device is used for taking and placing products, so that the transfer of the products is realized. Simple structure and easy realization.

Further, the boxing mechanism 700 comprises a moving track and a box body arranged on the moving track. The second carrying mechanism 802 transfers the tested spray header to the box body, and the moving track drives the box body to move so as to realize boxing.

Of course, in other embodiments, the structures of the first conveyance mechanism 801, the second conveyance mechanism 802, and the boxing mechanism 700 are not limited thereto.

Further, as shown in fig. 18 to 22, the pressure measuring mechanism 600 includes a fixed bottom plate 61, a hydraulic self-locking mechanism 62, a plurality of gripper pairs 63, and a plurality of opening and closing driving mechanisms 64.

Wherein, the fixed bottom plate 61 is provided with a plurality of square grooves 611 in an array, the square grooves 611 are internally provided with sealing gaskets 612, as a preferred implementation manner, the gaskets 612 can be fluorine rubber gaskets, the sealing gaskets 612 are provided with valve body positioning blocks 613, and the valve body positioning blocks 613 are internally provided with positioning holes 6130 for placing fire-fighting spray heads. Here, the positioning block 613 may span one or more longitudinal square grooves 611 and then be locked on the fixed bottom plate 61 by screws, so that when the sealing gasket 612 in the square groove 611 needs to be replaced, the valve body positioning block 613 can be quickly replaced by only removing the valve body positioning block 613.

The water pressure self-locking mechanism 62 is arranged in the fixed bottom plate 61 corresponding to the square groove 611, and the two sides of the square groove 611 are respectively provided with a mounting through groove 620. The hydraulic self-locking mechanism 62 comprises a push rod 621 and a pre-tightening spring 622, wherein the push rod 621 is provided with a step 6201, a pressure injection cavity 610 is arranged in the fixed bottom plate 61 below the square groove 620, and the push rod 621 passes through the pressure injection cavity 610, the fixed bottom plate 61 and the positioning hole 6130 from bottom to top and then is abutted against the fire-fighting nozzle 7. A limiting plate 613 is fixed at the bottom of the injection cavity 610, and the pre-tightening spring 622 is arranged between the limiting plate 613 and the step 6201.

The mechanical claw pairs 63 are arranged on the fixed bottom plate 61 through the mounting through grooves 620, can be fixed on the fixed bottom plate 61 in an openable and closable manner, are symmetrically arranged on two sides of the square groove 611, and are respectively provided with a tension spring 631 on two sides of each mechanical claw pair 63, and are connected with the fixed bottom plate 61 or fixedly connected with the adjacent mechanical claw pairs 63. For the pair of grippers 63, the left side will be referred to as gripper 6301 and the right side will be referred to as gripper 6302.

Further, each two groups of the mechanical claw pairs 663 are transversely arranged, a plurality of groups of mechanical claws 6302 and 6301 are longitudinally arranged in front of and behind each other, the two mechanical claws 6302 and 6301 located at the middle position are arranged in the same installation through groove 620 and are fixedly connected with each other through a tension spring 631, and the two mechanical claws 6301 and 6302 located at the outer sides are respectively fixed to the fixed bottom plate 61 through the tension spring 631. By the arrangement mode, a plurality of fire-fighting nozzles 7 can be detected at the same time, two groups of transversely arranged mechanical claw pairs 63 are linked with each other, when one group of mechanical claw pairs 63 are in an open state, the other group of mechanical claw pairs 63 are in a closed state, so that one row can be removed and undetected nozzles can be rearranged synchronously in the detection process, and high-efficiency and automatic detection can be realized.

Specifically, each of the grippers 6301, 6302 may have an inverted "L" shape, which is divided into an upper end portion 63011 (63021), a bent portion 63012 (63022), and a lower end portion 63013 (63023) from top to bottom. The tension spring 631 is disposed at the bending portion 63012 (63022), a first through hole 6501 is disposed between the bending portion 63012 (63022) and the lower end portion 63013 (63023), a first optical axis 651 is disposed in the first through hole 6501, the longitudinally arranged mechanical claws 6301 and 6302 are movably connected through the first optical axis 651, and two ends of the first optical axis 651 are fixed to the bottom of the fixed bottom plate 61 through an optical axis seat 6503.

Further, the grippers 6301, 6302 are longitudinally arranged, deep groove ball bearings 66 are arranged between every two adjacent groups, second through holes 6502 are formed in the lower end portions 63013 (63023) of the grippers 6301, 6302, the second through holes 6502 are elliptical holes, the second optical axes 6502 longitudinally penetrate through the elliptical holes, and the deep groove ball bearings 66 are longitudinally connected through the second optical axes 652. An adjusting screw 6503 is further arranged on the outer side of each mechanical claw 6301 and 6302, and the opening and closing degree of each mechanical claw can be finely adjusted by rotating the adjusting screw 6503 so as to achieve the best matching effect.

And a plurality of opening and closing driving mechanisms 64 arranged between the pair of mechanical claws 63 at the lower part of the fixed bottom plate 61. The opening and closing driving mechanism 64 comprises a cylinder 641 and a trapezoid block 642, and the bottom of the trapezoid block 642 is fixedly connected with a push plate 6421. A piston rod 6411 of the cylinder 641 is connected with an end plate 6412, and the end plate 6412 is fixedly connected with the bottom of the push plate 6421. Deep groove ball bearings 66 which are arranged in longitudinal rows are arranged between the bottom ends of the mechanical claws 6301 and 6302 on the left side and the right side and between the mechanical claws 6301 (6302) which are longitudinally arranged in front and back, the deep groove ball bearings 66 on the two sides are in tangential fit with the trapezoid blocks 642, and the trapezoid blocks 642 are arranged between the mechanical claws 6301 and 6302 on the left side and the right side in a vertically movable mode. A sensor is provided on cylinder 641 as described above for detecting whether piston rod 6411 is in place or not.

The pair of grippers 63 is opened or closed by an opening/closing driving mechanism 64. In the initial state, the opening and closing driving mechanism 64 enables the mechanical claw pair 63 to be in an opened state, the push rod 621 upwards presses the injection cavity 610 under the action of the elastic force of the pre-tightening spring 622, the step 6201 on the push rod enables the injection cavity 610 to be in a closed state, the water pressure self-locking mechanism 62 is in a self-locking state, and the cylinder 641 is located at the top dead center in the initial position. When it is detected that the fire sprinkler is placed on the valve body positioning block 613, the piston rod 6411 moves downward to the bottom dead center. In this process, the piston rod 6411 drives the trapezoid block 642 to move downward, because the trapezoid block 642 is tangent to the deep groove ball bearing 66, when the trapezoid block 642 moves downward, the deep groove ball bearing 66 is subjected to radial load, and the angle of the gripper pair 63 is changed, so that the gripper pair 63 grabs, positions and presses the fire-fighting nozzle valve body, the fire-fighting nozzle valve body 671 moves downward to push the push rod 621, the pre-tightening spring 622 is completely contracted, the self-locking state is released, and then the air tightness of the fire-fighting nozzle 7 can be detected by using water pressure.

The detection process of the detection spray head is as follows:

when the mechanical claw pair 63 is opened, the fire-fighting spray head 7 is placed on the valve body positioning block 613 through automatic operation, then the opening and closing driving mechanism 64 is operated, the mechanical claw pair 63 is closed, the hydraulic pressure self-locking mechanism 62 is touched and pressed in the process to unlock the mechanical claw pair, the air tightness detection of the fire-fighting spray head 7 is completed, after the detection is completed, the opening and closing driving mechanism 64 is operated again to open the mechanical claw pair 63, meanwhile, the hydraulic pressure self-locking mechanism 62 is synchronously self-locked, and the fire-fighting spray head 7 after the detection is completed can be automatically removed and the fire-fighting spray head which is not detected is rearranged.

While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (9)

1. The utility model provides a production line of fire control shower head, includes control system and connects control system's operation system, its characterized in that: the operation system comprises a transmission mechanism for transmitting the spray header valve body, and a valve plate feeding mechanism, a dispensing mechanism and an assembling mechanism which are sequentially arranged along the transmission direction of the transmission mechanism, wherein the valve plate feeding mechanism is used for connecting a valve plate supply device so as to transfer a valve plate to the spray header valve body on the transmission mechanism;

the assembly mechanism comprises a screw assembly and a glass bead feeding assembly, the screw assembly comprises a first lifting driver, a screw assembly machine and a screw guide block, the screw guide block is provided with a vertical through hole and an inclined guide hole communicated with the vertical through hole, the first lifting driver is connected with the screw assembly machine, a rotating shaft of the screw assembly machine is arranged in the vertical through hole of the screw guide block in a penetrating mode, the inclined guide hole is used for being connected with a screw feeding device, the glass bead feeding assembly comprises a clamping seat and an ejection pipe, the ejection pipe is used for being connected with the glass bead feeding device, the tail end of the ejection pipe extends to the lower position of the screw guide block, and the clamping seat corresponds to the tail end of the ejection pipe and is used for clamping glass beads ejected by the ejection pipe;

The conveying mechanism comprises a linear chute, a return conveying belt, a front-end propelling device, a front-end switching device and a rear-end switching device, wherein the linear chute is used for conveying a spray header tool carrying a spray header valve body, and the valve plate feeding mechanism, the dispensing mechanism and the assembling mechanism are sequentially arranged along the conveying direction of the linear chute; the rear end of the linear chute is communicated with the front end of the return conveying belt through a first transition channel, and the rear end of the return conveying belt is communicated with the front end of the linear chute through a second transition channel; the front end pushing device corresponds to the front end of the linear chute so as to push the spray header tool into the linear chute from the front end of the linear chute, and the rear end switching device is arranged on the first transition channel so as to transfer the spray header tool output from the rear end of the linear chute to the front end of the return conveying belt; the front-end switching device is arranged on the second transition channel so as to transfer the spray header tool output from the rear end of the return material conveying belt to the front end of the linear chute.

2. The fire sprinkler head production line according to claim 1, wherein: the transmission mechanism further comprises a positioning device, and the positioning device is arranged at the side end of the linear chute to position the spray header tool in the linear chute.

3. The fire sprinkler head production line according to claim 1, wherein: the operation system further comprises a feeding channel and a valve body feeding mechanism, wherein the valve body feeding mechanism is positioned at the front end of the valve plate feeding mechanism and is also positioned between the feeding channel and the transmission mechanism, so that the spray header valve body on the feeding channel is transferred to a tool on the transmission mechanism.

4. A fire sprinkler head production line according to claim 3, wherein: the valve body feeding mechanism comprises a mounting seat, a rotary driver, a swinging plate, a vertical connecting plate, a transverse connecting plate and a grabbing component, wherein an inverted U-shaped limit slot hole and a transverse horizontal guide rail are arranged on the mounting seat, the rotary driver is fixed on the mounting seat, the vertical connecting plate is slidably assembled on the horizontal guide rail, a vertical guide rail is arranged on the vertical connecting plate, and the transverse connecting plate is slidably assembled on the vertical guide rail; one end of the swinging plate is connected to the rotating shaft of the rotary driver, the other end of the swinging plate is provided with a long slot, the transverse connecting plate is provided with a limiting pin shaft, and the limiting pin shaft is arranged in the long slot of the swinging plate and the limiting slot of the mounting seat in a penetrating manner; the grabbing component is assembled on the transverse connecting plate.

5. The fire sprinkler head production line according to claim 1, wherein: the valve plate feeding mechanism comprises a mounting seat, a rotary driver, a swinging plate, a vertical connecting plate, a transverse connecting plate and a grabbing component, wherein an inverted U-shaped limit slot hole and a transverse horizontal guide rail are arranged on the mounting seat, the rotary driver is fixed on the mounting seat, the vertical connecting plate is slidably assembled on the horizontal guide rail, a vertical guide rail is arranged on the vertical connecting plate, and the transverse connecting plate is slidably assembled on the vertical guide rail; one end of the swinging plate is connected to the rotating shaft of the rotary driver, the other end of the swinging plate is provided with a long slot, the transverse connecting plate is provided with a limiting pin shaft, and the limiting pin shaft is arranged in the long slot of the swinging plate and the limiting slot of the mounting seat in a penetrating manner; the grabbing component is assembled on the transverse connecting plate.

6. The fire sprinkler head production line according to claim 1, wherein: the glass bead feeding assembly further comprises a plurality of switch devices, and the switch devices are sequentially arranged along the length direction of the ejection tube.

7. The fire sprinkler head production line according to claim 1, wherein: the clamping seat comprises a first part and a second part which are oppositely arranged, the first part comprises a first translation driver and a first clamping block, the first translation driver is connected with the first clamping block so as to drive the first clamping block to be close to or far away from a spray header valve body to be processed, and the first clamping block is provided with an accommodating notch; the second part comprises a second translational driver and a second clamping block, wherein the second translational driver is connected with the second clamping block to drive the second clamping block to be close to or far away from the shower head valve body to be processed.

8. The fire sprinkler head production line according to claim 1, wherein: the operation system further comprises a pressure measuring mechanism and a boxing mechanism, wherein a first carrying mechanism is arranged between the pressure measuring mechanism and the tail end of the transmission mechanism; and a second carrying mechanism is arranged between the pressure measuring mechanism and the boxing mechanism.

9. The fire sprinkler head production line according to claim 8, wherein: the pressure measuring mechanism includes:

the fixed bottom plate is provided with a plurality of positioning tables in an array manner, two sides of each positioning table are respectively provided with a mounting through groove, and the fixed bottom plate corresponding to each positioning table is provided with a water pressure self-locking mechanism;

the mechanical claw pairs penetrate through the fixed bottom plate and are fixed on the fixed bottom plate in an openable and closable manner, the mechanical claw pairs are symmetrically arranged on two sides of the positioning table, and tension springs are respectively arranged on two sides of each mechanical claw pair and are connected with the fixed bottom plate or fixedly connected with the adjacent mechanical claw pairs;

the opening and closing driving mechanisms are arranged between the mechanical claw pairs at the lower part of the fixed bottom plate.

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