CN216309878U - Sound insulation performance detection device for sound insulation type graphene floor heating module - Google Patents

Sound insulation performance detection device for sound insulation type graphene floor heating module Download PDF

Info

Publication number
CN216309878U
CN216309878U CN202121700700.3U CN202121700700U CN216309878U CN 216309878 U CN216309878 U CN 216309878U CN 202121700700 U CN202121700700 U CN 202121700700U CN 216309878 U CN216309878 U CN 216309878U
Authority
CN
China
Prior art keywords
sound insulation
sides
slider
floor heating
pulley
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN202121700700.3U
Other languages
Chinese (zh)
Inventor
付建中
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chuzhou Yangzi Kejian Electric Heating Co ltd
Original Assignee
Chuzhou Yangzi Kejian Electric Heating Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chuzhou Yangzi Kejian Electric Heating Co ltd filed Critical Chuzhou Yangzi Kejian Electric Heating Co ltd
Priority to CN202121700700.3U priority Critical patent/CN216309878U/en
Application granted granted Critical
Publication of CN216309878U publication Critical patent/CN216309878U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)

Abstract

The utility model discloses a sound insulation performance detection device of a sound insulation type graphene floor heating module, which comprises a detection cabinet, wherein a sound insulation door is arranged in front of the detection cabinet through a rotating shaft, first opening plates are arranged on two sides inside the detection cabinet, first sliding grooves are formed in the first opening plates, first sliding blocks are arranged in the first sliding grooves, the first sliding blocks are arranged on two sides of a pressing frame, and a sealing pad is arranged at the bottom end of the pressing frame; according to the utility model, through the arranged soundproof door, the soundproof treatment of the interior of the soundproof door is facilitated, and the pressing and sealing treatment of the gap of the detected graphene floor heating module is carried out through the sealing gasket arranged at the bottom end of the pressing frame, so that the detection effect and accuracy are improved.

Description

Sound insulation performance detection device for sound insulation type graphene floor heating module
Technical Field
The utility model relates to the technical field of equipment, in particular to a sound insulation performance detection device of a sound insulation type graphene floor heating module.
Background
Graphene is a new material which is formed by tightly stacking sp hybridized and connected carbon atoms into a single-layer two-dimensional honeycomb lattice structure, has excellent optical, electrical and mechanical properties, has an important application prospect in the aspects of materials science, micro-nano processing, energy, biomedicine, drug delivery and the like, and is considered to be a future revolutionary material;
the utility model provides a sound insulation performance detection device of a sound insulation type graphene floor heating module, which aims to solve the problems in the prior art.
SUMMERY OF THE UTILITY MODEL
In view of the above problems, the utility model aims to provide a sound insulation performance detection device for a sound insulation type graphene floor heating module, which solves the problems that the traditional sound insulation performance detection device for the sound insulation type graphene floor heating module is not beneficial to improving the detection effect and is not beneficial to rapidly carrying out multi-group detection.
In order to realize the purpose of the utility model, the utility model is realized by the following technical scheme: sound insulation type graphite alkene warms up sound insulation performance detection device of module, including detecting the cabinet, sound-proof door is installed through the pivot in the place ahead of detecting the cabinet, the first board of seting up is all installed to the inside both sides of detecting the cabinet, first spout has been seted up to the first inside of seting up the board, first slider is all installed to the inside of first spout, the both sides at the pressure frame are all installed to first slider, the sealed pad is installed to the bottom of pressure frame, the sliding sleeve is all installed to the top both sides of pressure frame, the internally mounted of sliding sleeve has the gag lever post, the first top of seting up the board is provided with the position sleeve, pressure frame is through gag lever post and the first board fixed connection of seting up.
The further improvement lies in that: the detecting cabinet is characterized in that a second opening plate is mounted on two sides of the bottom end of the detecting cabinet, a second sliding groove is formed in the second opening plate, a second sliding block is mounted in the second sliding groove, the second sliding block is mounted on two sides of a first cross beam, a first cylinder is fixedly connected to the bottom end of the first cross beam through a first flange plate, the first cylinder is mounted at the bottom end of the detecting cabinet, a third sliding groove is formed in the first cross beam, a third sliding block is mounted in the third sliding groove, and a sound source mechanism is mounted at the top end of the third sliding block.
The further improvement lies in that: the sound source mechanism comprises a first fixing plate, a first movable groove, a first pulley, a positioning plate, a fixing frame and a sound box, wherein the first fixing plate is installed on the top end of a third slider, the first movable groove is formed in two sides of the inside of the first fixing plate, the first pulley is installed inside the first movable groove, the first pulley is installed on two sides of the positioning plate, and the sound box is installed on the top end of the positioning plate through the fixing frame.
The further improvement lies in that: the detection cabinet is characterized in that third opening plates are installed on two sides of the interior of the detection cabinet, second movable grooves are formed in the third opening plates, second pulleys are installed in the second movable grooves, the second pulleys are installed on two sides of the installation box, and limiting blocks are arranged at the bottom end of the installation box.
The further improvement lies in that: the inside top both sides that detect the cabinet all install the fourth and establish the board, the third movable groove has all been seted up to the inside that the board was seted up to the fourth, the internally mounted in third movable groove has the third pulley, the both sides at the second crossbeam are installed to the third pulley, the fourth spout has been seted up to the inside of second crossbeam, the internally mounted of fourth spout has the fourth slider, detection mechanism is installed to the bottom of fourth slider.
The further improvement lies in that: detection mechanism includes mounting bolt, second cylinder, second ring flange, decibel detector and display screen, the second cylinder is installed through mounting bolt in the bottom of fourth slider, the decibel detector is installed through the second ring flange in the bottom of second cylinder, the place ahead surface electric connection of decibel detector has the display screen.
The utility model has the beneficial effects that: according to the utility model, the sound insulation treatment of the interior of the graphene floor heating module is facilitated through the arranged sound insulation door, the pressing and sealing treatment of the gap of the detected graphene floor heating module is carried out through the sealing gasket arranged at the bottom end of the pressing frame, so that the detection effect and accuracy are improved, the pressing frame is pulled upwards when the graphene floor heating module is replaced, and the limiting rods in the sliding sleeves arranged at the two sides of the top end of the pressing frame are penetrated and arranged in the positioning sleeves for limiting and fixing; the first air cylinder is arranged, so that the first cross beam can be jacked through the first air cylinder, the distance between the sound source mechanism arranged at the top end of the first cross beam and the graphene floor heating module can be adjusted, different distances can be detected, the sound source mechanism can be transversely adjusted in the third sliding groove through the third sliding block, and therefore all-around detection can be achieved; through the arranged sound source mechanism, the first pulley is favorable for moving back and forth in the first movable groove formed in the first fixing plate, so that omnibearing detection is performed, and sound with specified decibels is played through the sound box for sound insulation detection; through the installation box, the graphene floor heating module can be placed in the installation box conveniently, the limiting block arranged at the bottom end of the installation box is used for limiting and fixing, and meanwhile, the second pulleys on the two sides of the installation box slide in the second movable groove, so that the graphene floor heating module can be replaced quickly; through the arranged third pulley, the second cross beam is matched with the third pulley to slide back and forth in the third movable grooves formed in the fourth forming plate, and the fourth sliding groove formed in the second cross beam is matched with the fourth sliding block to transversely adjust the detection mechanism to be matched with the sound source mechanism to complete detection; through the detection mechanism who sets up, be favorable to driving like this through the second cylinder and push down the decibel detector and reach suitable high back, detect the decibel through the decibel detector, reachd the decibel data through the display screen to whether qualified through the syllable-dividing effect that the module was warmed up to the analysis graphite alkene to the data comes.
Drawings
Fig. 1 is a schematic front view of a cross-sectional structure according to the present invention.
Fig. 2 is a schematic structural diagram of the sound source mechanism part of the present invention.
Fig. 3 is a schematic structural diagram of the parts of the detection mechanism of the present invention.
Fig. 4 is a schematic view of the combined parts of the second pulley, the mounting box and the limiting block.
Fig. 5 is a schematic view of parts of an altimeter, a bushing and a stem of the present invention.
Wherein: 1. a detection cabinet; 2. a rotating shaft; 3. a soundproof door; 4. a first opening plate; 5. a first chute; 6. a first slider; 7. pressing a frame; 8. a gasket; 9. a sliding sleeve; 10. a limiting rod; 11. a positioning sleeve; 12. a second opening plate; 13. a second chute; 14. a second slider; 15. a first cross member; 16. a first flange plate; 17. a first cylinder; 18. a third chute; 19. a third slider; 20. a sound source mechanism; 2001. a first fixing plate; 2002. a first movable slot; 2003. a first pulley; 2004. positioning a plate; 2005. a fixed mount; 2006. a sound box; 21. a third opening plate; 22. a second movable slot; 23. a second pulley; 24. installing a box; 25. a limiting block; 26. a fourth setting plate; 27. a third movable slot; 28. a third pulley; 29. a second cross member; 30. a fourth chute; 31. a fourth slider; 32. a detection mechanism; 3201. installing a bolt; 3202. a second cylinder; 3203. a second flange plate; 3204. a decibel detector; 3205. a display screen; 33. an altimeter; 34. a sleeve; 35. a loop bar.
Detailed Description
In order to further understand the present invention, the following detailed description will be made with reference to the following examples, which are only used for explaining the present invention and are not to be construed as limiting the scope of the present invention.
Example one
According to fig. 1-4, this embodiment provides give sound insulation type graphene floor heating module's sound insulation performance detection device, including detecting cabinet 1, sound-proof door 3 is installed through pivot 2 in the place ahead of detecting cabinet 1, detect cabinet 1's inside both sides and all install first board 4 of seting up, first spout 5 has been seted up to first inside of seting up board 4, first slider 6 is all installed to first spout 5's inside, first slider 6 is all installed in the both sides of pressure frame 7, sealed pad 8 is installed to the bottom of pressure frame 7, sliding sleeve 9 is all installed to the top both sides of pressure frame 7, sliding sleeve 9's internally mounted has gag lever post 10, first top of seting up board 4 is provided with position sleeve 11, pressure frame 7 passes through gag lever post 10 and first board 4 fixed connection of seting up, through the soundproof door 3 that sets up, be favorable to giving sound insulation to the inside through sound insulation door 3 like this, and carry out pressfitting closely to the seam department of the graphene floor heating module who detects through sealed pad 8 that pressure frame 7 bottom set up and carry out pressfitting closely Seal and handle to improve the effect and the accuracy that detect, through pull-up pressure frame 7 when changing graphite alkene floor heating module, and will press the gag lever post 10 in the sliding sleeve 9 that 7 top both sides set up to run through and install and carry out spacing fixed effect in position sleeve 11.
The two sides of the bottom end of the detection cabinet 1 are respectively provided with a second opening plate 12, a second chute 13 is arranged inside the second opening plate 12, a second sliding block 14 is arranged inside the second chute 13, the second sliding block 14 is arranged on two sides of a first cross beam 15, the bottom end of the first cross beam 15 is fixedly connected with a first air cylinder 17 through a first flange 16, the first air cylinder 17 is arranged at the bottom end inside the detection cabinet 1, a third chute 18 is arranged inside the first cross beam 15, a third sliding block 19 is arranged inside the third chute 18, a sound source mechanism 20 is arranged at the top end of the third sliding block 19, the first air cylinder 17 is arranged to facilitate the first cross beam 15 to be lifted up through the first air cylinder 17, the distance between the sound source mechanism 20 arranged at the top end of the first cross beam 15 and a graphene floor heating module is adjusted to carry out detection at different intervals, and the sound source mechanism 20 is transversely adjusted in the third chute 18 through the third sliding block 19, thus, the detection can be carried out in all directions.
The sound source mechanism 20 comprises a first fixing plate 2001, a first movable groove 2002, a first pulley 2003, a positioning plate 2004, a fixing frame 2005 and a sound box 2006, wherein the first fixing plate 2001 is installed at the top end of the third slider 19, the first movable grooves 2002 are respectively formed in two sides of the inside of the first fixing plate 2001, the first pulley 2003 is installed in the first movable groove 2002, the first pulley 2003 is installed on two sides of the positioning plate 2004, a sound box 2006 is installed at the top end of the positioning plate 2004 through the fixing frame 2005, and the sound source mechanism 20 is arranged, so that the first pulley 2003 can move back and forth in the first movable groove 2002 formed in the inside of the first fixing plate 2001, omnibearing detection is achieved, and meanwhile sound with a specified decibel is played through the sound box 2006 to achieve sound insulation detection.
Detect cabinet 1's inside both sides and all install third division and establish board 21, second movable groove 22 has all been seted up to the inside of third division and establishing board 21, the internally mounted of second movable groove 22 has second pulley 23, the both sides at install bin 24 are installed to second pulley 23, install bin 24's bottom is provided with stopper 25, install bin 24 through the setting, be favorable to warming up the module with graphite alkene to place in install bin 24 like this, and carry out spacing fixed through stopper 25 that install bin 24 bottom set up, the second pulley 23 of install bin 24 both sides slides at second movable groove 22 simultaneously, can carry out quick replacement graphite alkene and warm up the module.
Detect cabinet 1's inside top both sides and all install the fourth and offer board 26, the third movable groove 27 has all been seted up to the inside of board 26 is established to the fourth, the internally mounted of third movable groove 27 has third pulley 28, third pulley 28 is installed in the both sides of second crossbeam 29, fourth spout 30 has been seted up to the inside of second crossbeam 29, the internally mounted of fourth spout 30 has fourth slider 31, detection mechanism 32 is installed to the bottom of fourth slider 31, third pulley 28 through setting up, be favorable to second crossbeam 29 cooperation third pulley 28 to slide around in the third movable groove 27 that the inside of fourth board 26 was all seted up is established to the fourth, and carry out horizontal regulation cooperation sound source mechanism 20 through the inside fourth spout 30 cooperation fourth slider 31 of seting up of second crossbeam 29 and accomplish the detection to detection mechanism 32.
Detection mechanism 32 includes mounting bolt 3201, second cylinder 3202, second ring flange 3203, decibel detector 3204 and display screen 3205, second cylinder 3202 is installed through mounting bolt 3201 to the bottom of fourth slider 31, decibel detector 3204 is installed through second ring flange 3203 to the bottom of second cylinder 3202, decibel detector 3204's the place ahead surface electrically connected has display screen 3205, detection mechanism 32 through setting up, be favorable to driving through second cylinder 3202 and push down behind decibel detector 3204 and reach suitable height, detect the decibel through decibel detector 3204, obtain the decibel data through display screen 3205, whether qualified through the syllable-dividing effect of the module of graphene floor heating of come to analyze through the decibel data, the sound insulation performance detection device of the module of graphene floor heating of type that gives sound insulation just uses and has accomplished like this.
When the graphene floor heating module is used, firstly, the graphene floor heating module is placed in the installation box 24, the spacing fixation is carried out through the limiting block 25 arranged at the bottom end of the installation box 24, meanwhile, the second pulleys 23 at the two sides of the installation box 24 slide into the detection cabinet 1 in the second movable groove 22, the sound insulation door 3 is closed through the rotating shaft 2, then, the gap of the detected graphene floor heating module is subjected to press-fit sealing treatment through the sealing gasket 8 arranged at the bottom end of the pressing frame 7, so that the detection effect and the detection accuracy are improved, when the graphene floor heating module is replaced, the pressing frame 7 is pulled upwards, the limiting rods 10 in the sliding sleeves 9 arranged at the two sides of the top end of the pressing frame 7 are penetrated and installed in the positioning sleeves 11 for spacing fixation, then, the first air cylinder 17 is arranged, so that the first cross beam 15 can be jacked through the first air cylinder 17, the distance between the sound source mechanism 20 installed at the top end of the first cross beam 15 and the graphene floor heating module is adjusted, the sound source mechanism 20 is transversely adjusted in the third sliding groove 18 through the third sliding block 19, the sound source mechanism can be moved back and forth in the first movable groove 2002 arranged in the first fixing plate 2001 through the first pulley 2003 so as to carry out omnibearing detection, meanwhile, sound with specified decibel is played through the sound box 2006 so as to carry out sound insulation detection, meanwhile, through the arranged third pulley 28, the second cross beam 29 is favorable for being matched with the third pulley 28 to slide back and forth in the third movable groove 27 arranged in the fourth arrangement plate 26, the fourth sliding groove 30 arranged in the second cross beam 29 is matched with the fourth sliding block 31 to transversely adjust the detection mechanism 32 so as to be matched with the sound source mechanism 20 to complete detection, and finally, after the decibel detector 3204 is driven to be pressed down to a proper height through the second air cylinder 3202, decibel detection is carried out through the decibel detector 3204, obtain the decibel data through display screen 3205 to whether the sound insulation effect of the module is qualified, such one of graphene floor heating is analyzed through the decibel data.
Example two
According to fig. 5, this embodiment provides give sound insulation performance detection device of module warms up type graphite alkene of giving sound insulation, and the inside wall that detects cabinet 1 is provided with altimeter 33.
Sleeve pipe 34 is all installed to the bottom both sides of detecting cabinet 1, and the inside cover of sleeve pipe 34 is equipped with loop bar 35, and the top of loop bar 35 is connected with the bottom of first crossbeam 15.
During the use, altimeter 33 through the inside wall setting of detecting cabinet 1, be favorable to carrying out the syllable-dividing test of the module of warming up the type that gives sound insulation graphite alkene like this, can be fast accurate see out the interval between module and sound source mechanism 20 of warming up the type that gives sound insulation graphite alkene, can be more accurate obtain the result of looking sideways at, and through the loop bar 35 that sets up, be favorable to loop bar 35 to cooperate first cylinder 17 to go up and down to first crossbeam 15 like this, the fixed effect after the ascending process of first crossbeam 15 and rise has been improved like this, the fastness of device has been improved like this.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (6)

1. Sound insulation type graphite alkene warms up sound insulation performance detection device of module, including detecting cabinet (1), its characterized in that: soundproof door (3) are installed through pivot (2) in the place ahead of detection cabinet (1), the inside both sides of detecting cabinet (1) are all installed first and are offered board (4), first spout (5) have been seted up to the first inside of offering board (4), first slider (6) are all installed to the inside of first spout (5), the both sides of pressing frame (7) are all installed in first slider (6), sealed pad (8) are installed to the bottom of pressing frame (7), sliding sleeve (9) are all installed to the top both sides of pressing frame (7), the internally mounted of sliding sleeve (9) has gag lever post (10), the first top of offering board (4) is provided with position sleeve (11), press frame (7) to offer board (4) fixed connection through gag lever post (10) and the first.
2. The sound insulation type graphene floor heating module sound insulation performance detection device according to claim 1, characterized in that: the utility model discloses a detection cabinet, including detection cabinet (1), board (12) are seted up to the second all installed to the bottom both sides of detection cabinet (1), second spout (13) have been seted up to the inside that board (12) were seted up to the second, the internally mounted of second spout (13) has second slider (14), the both sides at first crossbeam (15) are installed in second slider (14), the bottom of first crossbeam (15) is through the first cylinder (17) of first ring flange (16) fixedly connected with, install the inside bottom at detection cabinet (1) in first cylinder (17), third spout (18) have been seted up to the inside of first crossbeam (15), the internally mounted of third spout (18) has third slider (19), sound source mechanism (20) are installed on the top of third slider (19).
3. The sound insulation type graphene floor heating module sound insulation performance detection device according to claim 1, characterized in that: the sound source mechanism (20) comprises a first fixing plate (2001), a first movable groove (2002), a first pulley (2003), a positioning plate (2004), a fixing frame (2005) and a sound box (2006), wherein the first fixing plate (2001) is installed at the top end of a third sliding block (19), the first movable groove (2002) is formed in each of two sides of the interior of the first fixing plate (2001), the first pulley (2003) is installed in the first movable groove (2002), the first pulley (2003) is installed on two sides of the positioning plate (2004), and the sound box (2006) is installed at the top end of the positioning plate (2004) through the fixing frame (2005).
4. The sound insulation type graphene floor heating module sound insulation performance detection device according to claim 1, characterized in that: the third opening is installed on both sides of the interior of the detection cabinet (1), the second movable groove (22) is opened on the interior of the third opening plate (21), the second pulley (23) is installed inside the second movable groove (22), the two sides of the installation box (24) are installed on the second pulley (23), and the limiting block (25) is arranged at the bottom end of the installation box (24).
5. The sound insulation type graphene floor heating module sound insulation performance detection device according to claim 1, characterized in that: the inside top both sides of detecting cabinet (1) all install the fourth and offer board (26), the third movable groove (27) have all been seted up to the inside that the board (26) were established to the fourth, the internally mounted of third movable groove (27) has third pulley (28), the both sides at second crossbeam (29) are installed in third pulley (28), fourth spout (30) have been seted up to the inside of second crossbeam (29), the internally mounted of fourth spout (30) has fourth slider (31), detection mechanism (32) are installed to the bottom of fourth slider (31).
6. The sound insulation type graphene floor heating module sound insulation performance detection device according to claim 1, characterized in that: detection mechanism (32) includes mounting bolt (3201), second cylinder (3202), second ring flange (3203), decibel detector (3204) and display screen (3205), and second cylinder (3202) are installed through mounting bolt (3201) to the bottom of fourth slider (31), decibel detector (3204) is installed through second ring flange (3203) to the bottom of second cylinder (3202), the surperficial electric connection in front of decibel detector (3204) has display screen (3205).
CN202121700700.3U 2021-07-26 2021-07-26 Sound insulation performance detection device for sound insulation type graphene floor heating module Expired - Fee Related CN216309878U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202121700700.3U CN216309878U (en) 2021-07-26 2021-07-26 Sound insulation performance detection device for sound insulation type graphene floor heating module

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202121700700.3U CN216309878U (en) 2021-07-26 2021-07-26 Sound insulation performance detection device for sound insulation type graphene floor heating module

Publications (1)

Publication Number Publication Date
CN216309878U true CN216309878U (en) 2022-04-15

Family

ID=81085579

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202121700700.3U Expired - Fee Related CN216309878U (en) 2021-07-26 2021-07-26 Sound insulation performance detection device for sound insulation type graphene floor heating module

Country Status (1)

Country Link
CN (1) CN216309878U (en)

Similar Documents

Publication Publication Date Title
CN108346356A (en) A kind of physics lesson student material tensile test testing machine
CN216309878U (en) Sound insulation performance detection device for sound insulation type graphene floor heating module
CN112620859B (en) High-sealing compression structure for hot press
CN211061453U (en) Building material check out test set
CN203287250U (en) Tensile test device for sock-soil
CN207380216U (en) linear motor magnetic field tester
CN218444468U (en) Automobile wheel hub bearing rigidity testing machine
CN215374472U (en) Push type tool to lock detects frock
CN215430706U (en) Cleaning device for sample mold
CN201600246U (en) Exhaust pipe fixing device for engine pedestal
CN211205673U (en) Based on weeping detection device for valve
CN210289525U (en) Vacuum push-pull type sliding door structure
CN208125510U (en) A kind of multiple groups grid cell piece horizontal tensile testing machine
CN216082325U (en) Compression-resistant detection device for producing ALC autoclaved lightweight wallboard
CN221668770U (en) Vacuum interface cavity
CN221572099U (en) Detection device for injection molding
CN219729601U (en) DBC (direct current) normalization mechanism
CN218349996U (en) Physical property tester for metal and non-metal material
CN205910204U (en) Drive and positioning device for detecting and analyzing instrument
CN221495749U (en) Building material detects anchor clamps
CN221594762U (en) Sample pressing device for near infrared spectrum
CN205185298U (en) Can press from both sides clamping positioning mechanism of tight aciculiform product
CN210293580U (en) Clamp for air tightness test
CN218766556U (en) Heat-sealing peeling tester
CN220742126U (en) Clip closing device and film transverse stretching machine

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20220415

CF01 Termination of patent right due to non-payment of annual fee