A kind of plane automatic packaging machine
Technical field
The utility model relates to packing technique fields, more particularly, to a kind of plane automatic packaging machine.
Background technique
The existing towel that will be folded, face-cloth, bath mats, sheet quilt cover, clothing, aviation woollen blanket etc. are basic when being packed
It is realized by manpower, worker's great work intensity and low efficiency have much room for improvement.
Utility model content
The purpose of the utility model is to overcome above-mentioned the deficiencies in the prior art, provide a kind of plane automatic packaging machine, real
Automatic operation is showed, work efficiency is high.
To achieve the goals above, the utility model adopts the following technical solution:
A kind of plane automatic packaging machine, front end panel and rear bearing sheet including time interval parallelly distribute on prop up before described
By connecting between the upper and lower every the connecting plate of parallelly distribute between fagging and rear bearing sheet, the top of the rear bearing sheet is from back to front
It is successively arranged the rear transmission device and preceding transmission device being fed forward to packing material, the front end of the rear transmission device is higher than
Before the packing material of the rear end of preceding transmission device and rear transmission device front end is directly fallen on transmission device, the front end of rear transmission device
Equipped with the packing material that passes through for packing material frame is stored, is coated in the middle part of the packing material storage frame and is spaced apart with its outer wall
Two bifurcated cladding plates, two bifurcated cladding plates are in staggered distribution and in two bifurcated cladding plates in the two sides of packing material storage frame
Between partially overlap and between the upper and lower every setting, the lower section positioned at packing material storage frame is equipped with packing bag conveying device, the packaging
Bag transmission device includes the packaging bag loosening motor by packaging bag and being transmitted, and the front end of the packaging bag is received across packing material
Receive the space between the outer wall and bifurcated cladding plate of frame and the front end beyond packing material storage frame, the packing material be fed forward into
Before entering in packaging bag and being fallen in together with packaging bag on transmission device, after the top of the packing material storage frame is equipped with to bifurcated
Packaging bag upper end middle carry out the stitching devices of hot pressing suture, the lower section of the preceding transmission device, which is equipped with, can drive preceding transmission
The propulsion device that device pushes forward, the front of packing material storage frame are equipped with disconnecting device, and the propulsion device is to being pushed forward
Cooperative movement is sealed and is cut off to packaging bag above and below into rear disconnecting device.
The output that motor is loosened in the packaging bag drives packaging bag to loosen line shaft, and the packaging bag is loosened line shaft and passed through
Driven shaft is loosened in the connection packaging bag of packaging bag dynamic conveyor belt, and a packaging bag is additionally provided on the packaging bag dynamic conveyor belt and is passed
Tensioning wheel is sent, line shaft is loosened in packaging bag and packaging bag is loosened placement packaging bag volume, packaging bag between driven shaft and rolled up by packaging bag
It winds, the both ends that driven shaft is loosened in the packaging bag are arranged limit shaft sleeve, and the both ends of the packaging bag volume resist two limits
Position axle sleeve, the packaging bag are successively wound across lower rotary steering axis, clipping frame, upper rotary steering axis, leading axle, packaging bag warp
Cross after leading axle along bifurcated rod and on, the top connection of the bifurcated rod is mounted on the bifurcated of packing material storage back end of frame bottom
Directing plate, space of the packaging bag along bifurcated directing plate across the outer wall and bifurcated cladding plate of packing material storage frame.
The connecting plate being located above is equipped with vertical side plate, and the top of the side plate is connected by upper mounting plate plate, described
The upper surface of upper mounting plate plate is equipped with guide motor, and the output of the guide motor connects guide motor master gear, the guiding electricity
Owner's gear is connect with driven gear under driven gear, guide motor Tension gear, guide motor on guide motor by belt,
The coaxially connected upper driven tooth linkage gear of driven gear on the guide motor, the upper driven tooth linkage gear pass through band connection
There is upper guide reel driving cog, the upper guide reel driving cog is equipped with upper guide reel transmission shaft, the upper guide reel transmission shaft
Outer wall middle is arranged guide reel, the nock face of the packing material storage frame be equipped with upper guide reel it is opposing upper and lower on
Be oriented to roller bearing, be directed across between the upper guide reel and upper guiding roller bearing for the upper end of packaging bag, under the guide motor from
The coaxially connected lower driven tooth linkage gear of moving gear, the lower driven tooth linkage gear have lower guide reel to be driven by band connection
Tooth, the lower guide reel driving cog are equipped with lower guide reel transmission shaft, and the outer wall middle of the lower guide reel transmission shaft is arranged
Lower guide reel, the front lower ends face of packing material storage frame be equipped with lower guide reel lower guiding roller bearing opposing upper and lower, it is described
Lower end between lower guiding roller bearing and lower guide reel for packaging bag is directed across.
The stitching devices include suture cylinder and heat pressure roller, and the upper surface of the upper mounting plate plate is equipped with suture bracket
Plate, suture air cylinder fixed plate is connected on the suture supporting plate, and the upper surface of the suture air cylinder fixed plate is equipped with suture gas
Cylinder, the suture cylinder are connected with downwards heat pressure roller mounting plate, and the lower end of the heat pressure roller mounting plate is connected with hot pressing rolling
Wheel, the outer wall center of the heat pressure roller are equipped with the hot pressing raised line of protrusion, and the upper surface of the packing material storage frame is fixed with heat
Nip drum axis mounting rack, is equipped with hot pressing roller bearing on the hot pressing roller bearing mounting rack, the hot pressing raised line and hot pressing roller bearing phase up and down
Right, the upper surface of packing material storage frame is connected with guiding axle installing plate, wears in the guiding axle installing plate moving up and down
The lower end of heat pressure roller mounting plate guiding axis, the heat pressure roller mounting plate guiding axis is connected on heat pressure roller mounting plate.
The disconnecting device includes disconnecting device substrate and can move up and down and pass through the blade of disconnecting device substrate, described
Cutting knife cylinder mounting plate is connected on disconnecting device substrate, the upper surface of the cutting knife cylinder mounting plate is connected with cutting knife cylinder,
The cutting knife cylinder connects downwards blade, and the bottom end of the blade is equipped with sawtooth, and two sides connect inside the disconnecting device substrate
It is connected to position-limited wheel mounting plate, position-limited wheel is connected on the position-limited wheel mounting plate, the two sidewalls of the blade are supported by position-limited wheel
It connects, the blade is arranged right below bottom plate movement cylinder, and the upper end of the bottom plate movement cylinder is symmetrically connected with interval setting
Two disconnecting device lower plate of hot press, the two sides that the lower end surface of the disconnecting device substrate is located at blade be symmetrically arranged with hot pressing patch
Plate, two hot pressing pasting boards respectively with two disconnecting device lower plate of hot press up and down with respect to and the bottom end of blade can go deep into two cuttings and fill
It sets between lower plate of hot press.
The propulsion device includes propulsion cylinder, promotes connecting plate and promote guiding axis, is connected between two front end panels
There is propulsion cylinder mounting plate, the front end face of the propulsion cylinder mounting plate is connected with propulsion cylinder, the front end of the propulsion cylinder
Transmission device, the propulsion cylinder mounting plate and propulsion before connection promotes connecting plate, the upper surface for promoting connecting plate to connect
It is equipped between connecting plate and promotes guiding axis, the propulsion connecting plate can be moved forward and backward along propulsion guiding axis.
Deflector roll is transmitted after transmission device includes rear transport motor and is multiple after described, the output of the rear transport motor drives
Transmission gear afterwards, the rear transmission gear transmits main shaft after connecting by rear feed belt, after the rear feed belt is equipped with
Tension gear is transmitted, is transmitted after described and is wound with rear conveyer belt on main shaft and multiple rear transmission deflector rolls, after one of front end
Transmission deflector roll is located at packing material storage frame interior forward end.
The preceding transmission device includes preceding transport motor and multiple preceding transmission deflector rolls, and the output of the preceding transport motor passes through
Preceding feed belt transmits main shaft before driving, transmitted on main shaft and multiple preceding transmission deflector rolls before described and be wound with preceding conveyer belt.
Cavity after the rear end of the rear bearing sheet is equipped with one.
The upper surface of the packing material storage frame is connected to the lower end surface of upper mounting plate plate, packing material storage by upper mounting plate
The lower end surface of frame is connected to rear bearing sheet by lower installation board.
The beneficial effects of the utility model are: being packed packing material automatically by three edge sealings, automation is realized
Operation, work efficiency is high.
Detailed description of the invention
Fig. 1 is the perspective view of the utility model;
Fig. 2 is the first partial schematic diagram of the utility model;
Fig. 3 is second partial schematic diagram of the utility model;
Fig. 4 is the cooperation schematic diagram of the packing bag conveying device of the utility model;
Fig. 5 is the left view of Fig. 4;
Fig. 6 is the enlarged drawing in Fig. 5 at A;
Fig. 7 is that the packing material of the utility model stores the scheme of installation of frame;
Fig. 8 is the rear transmission device of the utility model and the installation stereoscopic schematic diagram of preceding transmission device;
Fig. 9 is the rear transmission device of the utility model and the cooperation perspective view of preceding transmission device;
Figure 10 is the rear transmission device of the utility model and the cooperation plan view of preceding transmission device;
Figure 11 is the installation perspective view of the stitching devices of the utility model;
Figure 12 is the partial assembled schematic diagram of the stitching devices of the utility model;
Figure 13 is the installation perspective view of the disconnecting device of the utility model;
Figure 14 is the enlarged drawing in Figure 13 at B;
Figure 15 is the installation perspective view of the propulsion device of the utility model;
Figure 16 is the part cooperation schematic diagram of the disconnecting device of the utility model;
Figure 17 is the folding schematic diagram of the packaging bag of the utility model.
In figure: front end panel 1, rear bearing sheet 11, connecting plate 12, rear cavity 13, side plate 14, upper mounting plate plate 15, rear transmission
Device 2, rear transport motor 21, rear transmission gear 22, rear transmission main shaft 23, rear feed belt 24, rear transmission Tension gear 25, after
It is conveyer belt 26, rear transmission deflector roll 27, preceding transmission device 3, preceding transport motor 31, preceding feed belt 32, preceding transmission deflector roll 33, preceding defeated
Send band 34, preceding transmission main shaft 35, packing bag conveying device 4, motor 41 is loosened in packaging bag, line shaft 42 is loosened in packaging bag, packaging
Bag loosen driven shaft 43, packaging bag dynamic conveyor belt 44, packaging bag transmission tensioning wheel 45, limit shaft sleeve 46, packaging bag volume 47, under
Rotary steering axis 48, clipping frame 49, upper rotary steering axis 410, leading axle 411, bifurcated rod 412, bifurcated directing plate 413, bifurcated
Cladding plate 414, packaging bag 415, preceding mouth-sealed portion 416, flap 417, propulsion device 5, propulsion cylinder mounting plate 51, propulsion cylinder
52, it promotes connecting plate 53, promote guiding axis 54, stitching devices 6, suture supporting plate 61, suture air cylinder fixed plate 62, suture cylinder
63, heat pressure roller mounting plate 64, heat pressure roller 65, hot pressing raised line 66, hot pressing roller bearing mounting rack 67, hot pressing roller bearing 68, guiding electricity
Machine 69, guide motor master gear 610, on guide motor under driven gear 611, guide motor Tension gear 612, guide motor from
Moving gear 613, upper driven tooth linkage gear 614, upper guide reel driving cog 615, upper guide reel transmission shaft 616, upper guide reel
617, upper guiding roller bearing 618, lower driven tooth linkage gear 619, lower guide reel driving cog 620, lower guide reel transmission shaft 621, under
Guide reel 622, guiding axle installing plate 624, heat pressure roller mounting plate guiding axis 625, disconnecting device 7, is cut lower guiding roller bearing 623
Disconnected device substrate 71, cutting knife cylinder mounting plate 72, cutting knife cylinder 73, blade 74, sawtooth 75, position-limited wheel mounting plate 76, position-limited wheel
77, bottom plate movement cylinder 78, disconnecting device lower plate of hot press 79, hot pressing pasting board 710, packing material storage frame 8, lower installation board 81, on
Mounting plate 82.
Specific embodiment
The utility model is further described with reference to the accompanying drawings and detailed description:
As shown in Fig. 1~Figure 17, a kind of plane automatic packaging machine, 1 He of front end panel including time interval parallelly distribute on
Rear bearing sheet 11, by being connected between the upper and lower every the connecting plate of parallelly distribute on 12 between the front end panel 1 and rear bearing sheet 11, institute
The top for stating rear bearing sheet 11 is successively arranged the rear transmission device 2 and preceding transmission dress being fed forward to packing material from back to front
3 are set, the packing material of rear end and 2 front end of rear transmission device that the front end of the rear transmission device 2 is higher than preceding transmission device 3 is directly fallen
On preceding transmission device 3, the front end of rear transmission device 2 is equipped with the packing material passed through for packing material and stores frame 8, and the packing material is received
Receiving the middle part of frame 8 is coated with two bifurcated cladding plates 414 being spaced apart with its outer wall, and two bifurcated cladding plates 414 are being packed
The two sides of object storage frame 8 are in staggered distribution and the middle of two bifurcated cladding plates 414 partially overlaps and between the upper and lower every setting, are located at
The lower section that packing material stores frame 8 is equipped with packing bag conveying device 4, and the packing bag conveying device 4 includes being loosened by packaging bag
The packaging bag 415 that motor 41 is transmitted, initial packaging bag 415 are flat shape, and final three edge sealing becomes sack.
The front end of the packaging bag 415 across packing material storage frame 8 outer wall and bifurcated cladding plate 414 space and
Front end beyond packing material storage frame 8, the packing material be fed forward into packaging bag 415 and with packaging bag 415 together
Before falling on transmission device 3, the top of the packing material storage frame 8 be equipped with to the 415 upper end middle of packaging bag after bifurcated into
The lower section of the stitching devices 6 of row hot pressing suture, the preceding transmission device 3 is pushed away equipped with what transmission device 3 before can driving pushed forward
Into device 5, the front of the packing material storage frame 8 is equipped with disconnecting device 7, and the propulsion device 5 pushes ahead rear disconnecting device 7
Upper and lower cooperative movement is sealed and is cut off to packaging bag 415.
The output that motor 41 is loosened in the packaging bag drives packaging bag to loosen line shaft 42, and line shaft is loosened in the packaging bag
42, which connect packaging bag by packaging bag dynamic conveyor belt 44, loosens driven shaft 43, is additionally provided on the packaging bag dynamic conveyor belt 44
One packaging bag transmits tensioning wheel 45, and packaging bag transmission tensioning wheel 45 is used to adjust the elasticity of packaging bag dynamic conveyor belt 44.
Line shaft 42 is loosened in packaging bag and packaging bag is loosened and places packaging bag volume 47 between driven shaft 43, packaging bag volume 47 by
Packaging bag 415 is wound, and the both ends that driven shaft 43 is loosened in the packaging bag are arranged limit shaft sleeve 46, the packaging bag volume 47
Both ends resist two limit shaft sleeves 46, and limit shaft sleeve 46, which is located in packaging bag by screw, to be loosened on driven shaft 43, limit shaft sleeve
46 limit the back-and-forth motion of packaging bag volume 47.
The packaging bag 415 is successively wound across lower rotary steering axis 48, clipping frame 49, upper rotary steering axis 410, guidance
Axis 411, packaging bag 415 after leading axle 411 along bifurcated rod 412 and on, the connection of the top of the bifurcated rod 412 is mounted on
Packing material stores the bifurcated directing plate 413 of 8 rear end bottom of frame, and the packaging bag 415 passes through packing material along bifurcated directing plate 413
Store the space between the outer wall and bifurcated cladding plate 414 of frame 8.Packaging bag 415 after meeting the step just forms and two
Two flaps 417 that bifurcated cladding plate 414 matches, the middle section of two of them flap 417 is between the upper and lower every being staggered and again
It closes, intermediate be overlapped when position passes through between hot pressing roller bearing 68 and hot pressing raised line 66 of two such flap 417 is just heated simultaneously
Sealing.
The connecting plate 12 being located above is equipped with vertical side plate 14, and the top of the side plate 14 is connected by upper mounting plate plate 15
It connects, the upper surface of the upper mounting plate plate 15 is equipped with guide motor 69, and the output of the guide motor 69 connects the main tooth of guide motor
Wheel 610, the guide motor master gear 610 and driven gear 611, guide motor Tension gear 612, guiding electricity on guide motor
Driven gear 613 is connected by belt under machine, the coaxially connected upper driven tooth linkage gear of driven gear 611 on the guide motor
614, the upper driven tooth linkage gear 614 has upper guide reel driving cog 615, the upper guide reel driving cog by band connection
615 are equipped with upper guide reel transmission shaft 616, and the outer wall middle of the upper guide reel transmission shaft 616 is arranged guide reel 617,
The nock face of packing material storage frame 8 be equipped with upper guide reel 617 upper guiding roller bearing 618 opposing upper and lower, it is described on
Upper end between guide reel 617 and upper guiding roller bearing 618 for packaging bag 415 is directed across.Driven gear under the guide motor
613 coaxially connected lower driven tooth linkage gears 619, the lower driven tooth linkage gear 619 have lower guide reel to pass by band connection
Movable tooth 620, the lower guide reel driving cog 620 are equipped with lower guide reel transmission shaft 621, the lower guide reel transmission shaft 621
Outer wall middle set sets guide reel 622, and the front lower ends face of the packing material storage frame 8 is equipped with and lower about 622 guide reel
Opposite lower guiding roller bearing 623, the lower end guidance between the lower guiding roller bearing 623 and lower guide reel 622 for packaging bag 415 are worn
It crosses.
The stitching devices 6 include suture cylinder 63 and heat pressure roller 65, and the upper surface of the upper mounting plate plate 15 is equipped with seam
Supporting plate 61 is closed, suture air cylinder fixed plate 62 is connected on the suture supporting plate 61, it is described to suture the upper of air cylinder fixed plate 62
End face is equipped with suture cylinder 63, and the suture cylinder 63 is connected with downwards heat pressure roller mounting plate 64, the heat pressure roller installation
The lower end of plate 64 is connected with heat pressure roller 65, and the outer wall center of the heat pressure roller 65 is equipped with the hot pressing raised line 66 of protrusion, described
The upper surface of packing material storage frame 8 is fixed with hot pressing roller bearing mounting rack 67, is equipped with hot pressing on the hot pressing roller bearing mounting rack 67
Roller bearing 68, the hot pressing raised line 66 and about 68 hot pressing roller bearing are opposite, and the rear cavity 13 of the utility model can place heating device,
Heat pressure roller 65 is heated by heating device, hot-seal can be carried out to the upper end opening of packaging bag 415.Packaging bag 415 passes through
Out-of-date meeting is so that hot pressing raised line 66 and hot pressing roller bearing 68 roll.
The upper surface of packing material storage frame 8 is connected with guiding axle installing plate 624, wears in the guiding axle installing plate 624
The lower end of heat pressure roller mounting plate guiding axis 625 moving up and down, the heat pressure roller mounting plate guiding axis 625 is connected to heat
On pressing roller mounting plate 64.
The disconnecting device 7 includes disconnecting device substrate 71 and the blade that can move up and down and pass through disconnecting device substrate 71
74, cutting knife cylinder mounting plate 72 is connected on the disconnecting device substrate 71, the upper surface of the cutting knife cylinder mounting plate 72 connects
It is connected to cutting knife cylinder 73, connection blade 74, the bottom end of the blade 74 are described to cut equipped with sawtooth 75 downwards for the cutting knife cylinder 73
Disconnected 71 inside two sides of device substrate are respectively connected with position-limited wheel mounting plate 76, are connected with position-limited wheel on the position-limited wheel mounting plate 76
77, the two sidewalls of the blade 74 are abutted by position-limited wheel 77, are able to maintain in this way when blade 74 moves up and down repeatedly correct
Position.
The blade 74 is arranged right below bottom plate movement cylinder 78, and the upper end of the bottom plate movement cylinder 78 symmetrically connects
There are spaced two disconnecting device lower plate of hot press 79, the lower end surface of the disconnecting device substrate 71 is located at the two sides of blade 74
It is symmetrically arranged with hot pressing pasting board 710, two hot pressing pasting boards 710 and blade opposite with two about 79 disconnecting device lower plate of hot press respectively
74 bottom end can be goed deep between two disconnecting device lower plate of hot press 79.Disconnecting device lower plate of hot press 79 is carried out also by heating device
Heating, the front end of such packaging bag 415 just forms two between two disconnecting device lower plate of hot press 79 and two hot pressing pasting boards 710
Road sealing, and blade 74 is just cut and divides packaging bag 415 between twice sealing, preceding sealing together becomes a upper packaging bag
415 rear end closure, rear sealing together become the preceding end closure of the latter packaging bag 415.The packaging bag 415 of each final molding
It include being sealed at 3, respectively the preceding mouth-sealed portion 416 positioned at front end (passes through a disconnecting device lower plate of hot press being located behind
79 and hot pressing pasting board 710 realize), positioned at rear end rear mouth-sealed portion (pass through be located at front a disconnecting device lower plate of hot press 79
Realized with hot pressing pasting board 710) and sealing (pass through hot pressing raised line 66 and hot pressing roller bearing 68 realize) positioned at upper end.
The propulsion device 5 includes propulsion cylinder 52, promotes connecting plate 53 and promote guiding axis 54, two front end panels 1
Between be connected with propulsion cylinder mounting plate 51, the front end face of the propulsion cylinder mounting plate 51 is connected with propulsion cylinder 52, described
Transmission device 3 before the front end connection of propulsion cylinder 52 promotes connecting plate 53, the upper surface for promoting connecting plate 53 to connect, it is described
It is equipped between propulsion cylinder mounting plate 51 and propulsion connecting plate 53 and promotes guiding axis 54, the propulsion connecting plate 53 can be along propulsion
Guiding axis 54 is moved forward and backward.
Transmission device 2 includes rear transport motor 21 and transmits deflector roll 27 after multiple after described, the rear transport motor 21
Transmission gear 22 after output drives, the rear transmission gear 22 transmits main shaft 23 after connecting by rear feed belt 24, after described
Feed belt 24 transmits Tension gear 25 after being equipped with, transmitted after being wound on main shaft 23 and multiple rear transmission deflector rolls 27 after described
Conveyer belt 26 transmits deflector roll 27 after one of front end and is located at packing material storage 8 interior forward end of frame.Conveyer belt 26 after i.e.
It passes back through inside packing material storage frame 8.
The preceding transmission device 3 includes preceding transport motor 31 and multiple preceding transmission deflector rolls 33, the preceding transport motor 31
Output transmits main shaft 35 before driving by preceding feed belt 32, wind on the preceding transmission main shaft 35 and multiple preceding transmission deflector rolls 33
There is preceding conveyer belt 34.
Cavity 13 after the rear end of the rear bearing sheet 11 is equipped with one.
The upper surface of the packing material storage frame 8 is connected to the lower end surface of upper mounting plate plate 15, packaging by upper mounting plate 82
The lower end surface of object storage frame 8 is connected to rear bearing sheet 11 by lower installation board 81.
The working principle of the utility model is: the packing material being located on rear conveyer belt 26 is forwarded and is stored by packing material
Frame 8,416 (the preceding mouth-sealed portion 416 shape when a upper packaging bag 415 is cut off of mouth-sealed portion before packaging bag at this time 415 has been formed
At), and the lower end of packaging bag at this time 415 encases the front lower portion of packing material storage frame 8, the upper end of packaging bag 415 encases packaging
Object stores the upper front end of frame 8 and forms the opening being overlapped, and packing material automatically falls into packaging bag in the front end of packing material storage frame 8
It falls in 415 and then on preceding conveyer belt 34, packing material drives packaging bag 415 to travel forward before this, in this way, packaging bag
The opening of 415 upper end just completes hot pressing fusion sealing forward and between hot pressing raised line 66 and hot pressing roller bearing 68 all the way, then
Propulsion cylinder 52 acts, and entire preceding transmission device 3 is pushed forward by past, so that only surplus between blade 74 and disconnecting device lower plate of hot press 79
Lower packaging bag 415, such 73 downward actuation of cutting knife cylinder, bottom plate movement cylinder 78 move upwards, hot pressing pasting board 710 and cutting dress
It sets the fitting of lower plate of hot press 79 and packaging bag 415 is formed into twice sealing, mouth-sealed portion 416 before one of sealing as being located behind,
Blade 74 protrudes between two disconnecting device lower plate of hot press 79 and cuts off packaging bag 415 between twice sealing, complete to packing material
It moves and falls forward under the transmission of preceding conveyer belt 34 at the packaging bag 415 of packaging, at this time cutting knife cylinder 73 and bottom plate movement
The equal return of cylinder 78, then the also return of propulsion cylinder 52, completes a packaging process.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all practical at this
Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model
Within the scope of shield.