CN114770791A - Raw material mixing device for processing injection molding of electronic equipment - Google Patents
Raw material mixing device for processing injection molding of electronic equipment Download PDFInfo
- Publication number
- CN114770791A CN114770791A CN202210301501.8A CN202210301501A CN114770791A CN 114770791 A CN114770791 A CN 114770791A CN 202210301501 A CN202210301501 A CN 202210301501A CN 114770791 A CN114770791 A CN 114770791A
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- electronic equipment
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- mixing device
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- 239000002994 raw material Substances 0.000 title claims abstract description 17
- 238000001746 injection moulding Methods 0.000 title claims description 14
- 238000007599 discharging Methods 0.000 claims abstract description 32
- 239000000463 material Substances 0.000 abstract description 23
- 238000000034 method Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
- B29B7/22—Component parts, details or accessories; Auxiliary operations
- B29B7/26—Component parts, details or accessories; Auxiliary operations for discharging, e.g. doors
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The invention discloses a raw material mixing device for processing injection-molded parts of electronic equipment, which comprises a rack and a tank body fixed on the inner side of the top end of the rack, wherein the bottom end of the tank body is connected with a charging hopper, the surfaces of two sides of the tank body are respectively provided with a discharge opening component, each discharge opening component comprises a discharge pipe and a discharge cylinder movably sleeved on the surface of the discharge pipe, the top end of the discharge pipe is welded and fixed with the tank body, the top end of the discharge pipe is communicated with the inside of the tank body and is used for subsequent discharging, and the top end of the discharge cylinder is provided with an integrated base ring; through setting up the discharge opening subassembly of compriseing discharge cylinder, discharge tube and base ring for the length of discharge opening subassembly can correspond the adjustment according to the height of external material receiving box, at the in-process of actually unloading, can reduce the difference in height between discharge opening and the external material receiving box, prevents that the in-process of unloading from taking place the material and incline to spill, improves and connects material precision and convenience, brings the convenience for operating personnel.
Description
Technical Field
The invention belongs to the technical field of raw material mixing and stirring, and particularly relates to a raw material mixing device for processing an injection molding piece of electronic equipment.
Background
In the electronic equipment injection molding course of working, at first need many processing raw materials to mix the stirring, need to adopt a vertical mixer to mix the stirring to the raw materials usually, this kind of vertical mixer mainly comprises parts such as the jar body, frame, loading hopper, discharge opening, motor and (mixing) shaft, and the (mixing) shaft setting is in jar internal portion, passes through the belt with the motor of jar external side and is connected, can drive the (mixing) shaft after the motor starts and mix the stirring to jar internal portion material.
When the existing vertical mixer is used, the material can be discharged through the discharge openings on the two sides of the tank body, the material receiving box is placed below the discharge openings, however, the length of the existing discharge openings cannot be correspondingly adjusted according to the height of the material receiving box, and the problem that the material is prone to being scattered due to the height difference between the discharge openings and the material receiving box in the actual discharging process is solved, so that the normal material receiving of the material receiving box is influenced, and inconvenience is brought to operating personnel.
Disclosure of Invention
The invention aims to provide a raw material mixing device for processing an injection molding part of electronic equipment, which aims to solve the problem that the length of a discharge opening on the existing vertical stirrer cannot be correspondingly adjusted according to the height of a material receiving box in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a raw material mixing device for processing injection molding parts of electronic equipment comprises a rack and a tank body fixed on the inner side of the top end of the rack, wherein the bottom end of the tank body is connected with a charging hopper, discharge port assemblies are arranged on the surfaces of two sides of the tank body respectively, each discharge port assembly comprises a discharge pipe and a discharge cylinder movably sleeved on the surface of the discharge pipe, the top end of each discharge pipe is welded and fixed with the tank body, the top end of each discharge pipe is communicated with the inner part of the tank body and used for subsequent discharging, an integrated base ring is arranged at the top end of each discharge cylinder, the base ring is movably sleeved on the surface of the discharge pipe, so that the discharge cylinders can slide up and down on the surface of the discharge pipes to realize adjustment, an annular groove is formed in the surface of the base ring, a rotating ring is installed in the annular groove in a rotating manner, a first T-shaped slot is formed in the inner wall of the annular groove, and a T-shaped limiting block is inserted in the first T-shaped slot, a plurality of cylindrical slots are uniformly formed in the surface of the discharge pipe, the end portion of the T-shaped limiting block is inserted into the inner side of one of the cylindrical slots and used for limiting the discharge pipe after sliding, and a dismounting notch is formed in the surface of the rotating ring and used for subsequently dismounting and mounting the T-shaped limiting block.
Preferably, a telescopic groove is formed in the base ring, a first spring and a telescopic clamping block are arranged in the telescopic groove, the first spring is connected between the telescopic clamping block and the inner wall of the telescopic groove, a plurality of circular clamping grooves are formed in the inner wall of the rotating ring, and the end portion of the telescopic clamping block is clamped in one of the circular clamping grooves and used for limiting the rotating ring after rotating.
Preferably, two second T-shaped slots are symmetrically formed in the surface of the discharging cylinder, T-shaped guide rods are arranged in the two second T-shaped slots, two strip-shaped guide grooves are symmetrically formed in the surface of the discharging pipe, and the end portions of the T-shaped guide rods are inserted into the strip-shaped guide grooves, so that the discharging cylinder cannot fall off in the vertical sliding process.
Preferably, a U-shaped seat is fixed on one side, opposite to each second T-shaped slot, of the surface of the discharging cylinder, an L-shaped stop block penetrates through the inner side of the U-shaped seat, one end of the L-shaped stop block covers the second T-shaped slots and is used for stopping and limiting the T-shaped guide rods, the T-shaped guide rods are prevented from falling off, and the discharging cylinder can be detached by laterally pulling the L-shaped stop block in the follow-up process to achieve dismounting and mounting of the T-shaped guide rods.
Preferably, a rectangular sliding groove is formed in the inner wall of the U-shaped seat, a rectangular sliding block and a second spring are arranged inside the rectangular sliding groove, the second spring is connected between the rectangular sliding block and the inner wall of the rectangular sliding groove, and one end of the rectangular sliding block is fixed to the L-shaped stop block and used for limiting after the L-shaped stop block is laterally pulled.
Preferably, the surface mounting of T shape stopper has holds between the fingers the piece, and holds between the fingers the piece and be the arc, conveniently takes T shape stopper.
Preferably, the surface of rotatory ring evenly is equipped with the antiskid sand grip of a plurality of integral types, plays the antiskid effect, is convenient for to the rotation of rotatory ring, the bottom mounting of frame has the bracer.
Compared with the prior art, the invention has the beneficial effects that:
1. through setting up the discharge opening subassembly of compriseing discharge cylinder, discharge tube and base ring for the length of discharge opening subassembly can correspond the adjustment according to the height of external material receiving box, at the in-process of actually unloading, can reduce the difference in height between discharge opening and the external material receiving box, prevents to unload the in-process and takes place the material and incline to spill, improves and connects material precision and convenience, brings the convenience for operating personnel.
2. Through the second T shape slot, the T shape guide arm that set up, U-shaped seat and L shape dog isotructure for the follow-up easy dismouting of discharging barrel, thereby it is convenient to have brought for follow-up operating personnel to the dismantlement clearance of discharging barrel, has improved the holistic maintenance convenience in later stage.
Drawings
FIG. 1 is a schematic view of the structure of the present invention;
FIG. 2 is an enlarged view of a portion of the area A of FIG. 1 in accordance with the present invention;
FIG. 3 is a cross-sectional view of the discharge vessel and discharge tube junction of the present invention;
FIG. 4 is a side cross-sectional view of the discharge vessel and discharge tube junction of the present invention;
FIG. 5 is an enlarged view of a portion of the area C of FIG. 4 in accordance with the present invention;
FIG. 6 is an enlarged view of a portion of the area D of FIG. 4 in accordance with the present invention;
FIG. 7 is an enlarged view of a portion of the area B of FIG. 3 according to the present invention;
in the figure: 1. a tank body; 2. a frame; 3. a hopper; 4. a discharge cylinder; 5. a discharge pipe; 6. a base ring; 7. a rotating ring; 8. a U-shaped seat; 9. an L-shaped stop block; 10. disassembling and assembling the notch; 11. a first T-shaped slot; 12. a T-shaped limiting block; 13. a T-shaped guide rod; 14. a strip-shaped guide groove; 15. a cylindrical slot; 16. a circular slot; 17. a telescopic groove; 18. a first spring; 19. a telescopic clamping block; 20. a second T-shaped slot; 21. a rectangular chute; 22. a rectangular slider; 23. a second spring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Examples
Referring to fig. 1 to 7, the present invention provides a technical solution: a raw material mixing device for processing injection molding parts of electronic equipment comprises a frame 2 and a tank body 1 fixed on the inner side of the top end of the frame 2, the bottom end of the tank body 1 is connected with a charging hopper 3, the surfaces of the two sides of the tank body 1 are both provided with discharge opening components, each discharge opening component comprises a discharge pipe 5 and a discharge barrel 4 movably sleeved on the surface of the discharge pipe 5, the top end of the discharge pipe 5 is welded and fixed with the tank body 1, the top end of the discharge pipe 5 is communicated with the inside of the tank body 1, the top end of the discharge barrel 4 is provided with an integrated base ring 6, the base ring 6 is movably sleeved on the surface of the discharge pipe 5, so that the discharge barrel 4 can slide up and down on the surface of the discharge pipe 5 to realize the length adjustment of the discharge opening components, the surface of the base ring 6 is provided with a ring groove, a rotating ring 7 is rotatably installed in the ring groove, the inner wall of the ring groove is provided with a first T-shaped slot 11, and a T-shaped limit block 12 is inserted in the first T-shaped slot 11, a plurality of cylindrical slots 15 corresponding to T shape stopper 12 have evenly been seted up on the surface of discharge tube 5, and the tip of T shape stopper 12 inserts to one of them cylindrical slot 15 inboardly, be used for spacing after the discharge tube 4 slides, dismouting breach 10 corresponding with T shape stopper 12 is seted up on the surface of rotatory ring 7, rotatory ring 7 of follow-up accessible will rotate, cause dismouting breach 10 and T shape stopper 12 to align, can realize taking out and putting into of T shape stopper 12, can slide about discharge tube 4 takes out the back at T shape stopper 12.
In this embodiment, preferably, a telescopic groove 17 is formed inside the base ring 6, a first spring 18 and a telescopic fixture block 19 are disposed inside the telescopic groove 17, the first spring 18 is connected between the telescopic fixture block 19 and an inner wall of the telescopic groove 17, a plurality of circular slots 16 corresponding to the telescopic fixture block 19 are formed in an inner wall of the rotating ring 7, and an end of the telescopic fixture block 19 is clamped inside one of the circular slots 16 for limiting the rotating ring 7 after rotating.
In this embodiment, preferably, two second T-shaped slots 20 are symmetrically formed in the surface of the discharging cylinder 4, two T-shaped guide rods 13 are disposed in the two second T-shaped slots 20, two strip-shaped guide slots 14 corresponding to the T-shaped guide rods 13 are symmetrically formed in the surface of the discharging tube 5, and the end portions of the T-shaped guide rods 13 are inserted into the strip-shaped guide slots 14, so that the discharging cylinder 4 can slide up and down on the surface of the discharging tube 5 and cannot fall off.
In this embodiment, preferably, a U-shaped seat 8 is fixed on one side of the surface of the discharging cylinder 4 opposite to each second T-shaped slot 20, and the inner side of the U-shaped seat 8 is provided with an L-shaped stop dog 9 in a penetrating way, one end of the L-shaped stop dog 9 covers the second T-shaped slot 20, the T-shaped guide rod 13 is blocked and limited, the second T-shaped slot 20 can be exposed by laterally pulling the L-shaped stop block 9, so that the T-shaped guide rod 13 can be disassembled and assembled, after the T-shaped guide rod 13 is disassembled, the discharging cylinder 4 can be directly dismounted from the bottom end of the discharging pipe 5, the inner wall of the U-shaped seat 8 is provided with a rectangular sliding groove 21, and the rectangular sliding block 22 and the second spring 23 are arranged in the rectangular sliding groove 21, the second spring 23 is connected between the rectangular sliding block 22 and the inner wall of the rectangular sliding groove 21, and one end of the rectangular sliding block 22 is fixed with the L-shaped stop block 9, so that the L-shaped stop block 9 can be reset under the action of the second spring 23 after being pulled laterally.
In this embodiment, preferred, the fixed surface of T shape stopper 12 has the piece of holding between the fingers, and holds between the fingers the piece and be the arc, and the operating personnel of being convenient for is to taking of T shape stopper 12, and the surface of rotatory ring 7 evenly is equipped with the anti-skidding sand grip of a plurality of integral types, and the operating personnel of being convenient for is to the rotation of rotatory ring 7, and the bottom mounting of frame 2 has the kicking block.
The working principle and the using process of the invention are as follows: when the vertical mixer is used, an operator can place an external material receiving box below the discharging tube 4 for material receiving, meanwhile, the length of a discharging opening component can be adjusted, the height difference between the discharging opening and the external material receiving box is reduced, when the vertical mixer is adjusted, only the rotating ring 7 needs to be rotated by force first, so that the end part of the telescopic fixture block 19 is extruded into the inner side of the telescopic groove 17 by the inner wall of the rotating ring 7, and the first spring 18 is gradually compressed, the rotating ring 7 can be smoothly rotated until the dismounting notch 10 is aligned with the position of the T-shaped stopper 12, and the end part of the telescopic fixture block 19 can be clamped into the circular clamping grooves 16 at other positions under the pushing of the first spring 18, so that the rotating ring 7 can be limited, at the moment, the T-shaped stopper 12 can be taken out through the dismounting notch 10, so that the T-shaped stopper 12 is not limited to the base ring 6 any more, at the discharging tube 4 can slide up and down on the surface of the discharging tube 5, thereby change the length of the discharge opening assembly, after the discharge opening assembly is adjusted to the appropriate length, insert the T-shaped stopper 12 back into the first T-shaped slot 11 again, and make the tip of the T-shaped stopper 12 insert into the cylindrical slot 15 of other positions, can realize the spacing of the base ring 6, rotate the rotating ring 7 round again at last, cause the flexible fixture block 19 can block into the round neck 16 of other positions, and make the disassembling and assembling gap 10 not align with T-shaped stopper 12 again, can cover the plugging of the first T-shaped slot 11 through the rotating ring 7, thus realize the spacing to T-shaped stopper 12, cause the length of the discharge opening assembly to carry on the corresponding adjustment according to the height of the external material receiving box, in the course of actually unloading, can reduce the difference in height between external material receiving box and the discharge opening, prevent the material from spilling taking place in the course of unloading;
when the discharging barrel 4 needs to be removed for cleaning subsequently, the L-shaped stop block 9 is pulled laterally to enable the rectangular sliding block 22 to gradually compress the second spring 23 until the end part of the L-shaped stop block 9 does not shield the second T-shaped slot 20, the T-shaped guide rod 13 can be taken out of the second T-shaped slot 20, the discharging barrel 4 can be directly removed from the bottom end of the discharging pipe 5 without the action of the T-shaped guide rod 13, so that the discharging barrel 4 is cleaned and maintained, when the discharging barrel is mounted subsequently, the discharging barrel 4 is sleeved on the surface of the discharging pipe 5, the second T-shaped slot 20 is aligned with the strip-shaped guide groove 14, the L-shaped stop block 9 is pulled laterally again to enable the second T-shaped slot 20 to be exposed, the T-shaped guide rod 13 is inserted into the second T-shaped slot 20, so that the end part of the T-shaped guide rod 13 can enter the inner side of the strip-shaped guide groove 14, and then the L-shaped stop block 9 is loosened, make second spring 23 push back rectangle slider 22 to make L shape dog 9 kick-back reset, cause L shape dog 9 can cover the shutoff with second T shape slot 20, can realize spacing to T shape guide arm 13, thereby accomplish the quick installation of discharge cylinder 4.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a raw material mixing device is used in processing of electronic equipment injection molding, includes frame (2) and fixes in the inboard jar body (1) in frame (2) top, the bottom of the jar body (1) is connected with loading hopper (3), the both sides surface of the jar body (1) all is provided with discharge opening subassembly, its characterized in that: the discharge opening assembly comprises a discharge pipe (5) and a discharge cylinder (4) movably sleeved on the surface of the discharge pipe (5), the top end of the discharge pipe (5) is welded and fixed with the tank body (1), the top end of the discharge pipe (5) is communicated with the inside of the tank body (1), the top end of the discharge cylinder (4) is provided with an integrated base ring (6), the base ring (6) is movably sleeved on the surface of the discharge pipe (5), the surface of the base ring (6) is provided with an annular groove, a rotating ring (7) is rotatably installed in the annular groove, the inner wall of the annular groove is provided with a first T-shaped slot (11), a T-shaped limit block (12) is inserted into the first T-shaped slot (11), the surface of the discharge pipe (5) is uniformly provided with a plurality of cylindrical slots (15), and the end part of the T-shaped limit block (12) is inserted into the inner side of one of the cylindrical slots (15), the surface of rotatory ring (7) has seted up dismouting breach (10).
2. The raw material mixing device for processing the injection molding part of the electronic equipment according to claim 1, wherein: the ring is characterized in that a telescopic groove (17) is formed in the base ring (6), a first spring (18) and a telescopic clamping block (19) are arranged in the telescopic groove (17), the first spring (18) is connected between the telescopic clamping block (19) and the inner wall of the telescopic groove (17), a plurality of circular clamping grooves (16) are formed in the inner wall of the rotating ring (7), and the end portion of the telescopic clamping block (19) is clamped in one of the circular clamping grooves (16).
3. The raw material mixing device for processing the injection molding part of the electronic equipment according to claim 1, wherein: two second T-shaped slots (20) are symmetrically formed in the surface of the discharging barrel (4), T-shaped guide rods (13) are arranged in the two second T-shaped slots (20), two strip-shaped guide grooves (14) are symmetrically formed in the surface of the discharging pipe (5), and the end portions of the T-shaped guide rods (13) are inserted into the strip-shaped guide grooves (14).
4. The raw material mixing device for processing the injection molding part of the electronic equipment, according to claim 3, wherein: and a U-shaped seat (8) is fixed on one side of the surface of the discharging cylinder (4) corresponding to each second T-shaped slot (20), an L-shaped stop block (9) penetrates through the inner side of the U-shaped seat (8), and one end of the L-shaped stop block (9) covers the second T-shaped slot (20).
5. The raw material mixing device for processing the injection molding part of the electronic equipment, according to claim 4, wherein: rectangular sliding grooves (21) are formed in the inner walls of the U-shaped seats (8), rectangular sliding blocks (22) and second springs (23) are arranged inside the rectangular sliding grooves (21), the second springs (23) are connected between the rectangular sliding blocks (22) and the inner walls of the rectangular sliding grooves (21), and one ends of the rectangular sliding blocks (22) are fixed to the L-shaped stop blocks (9).
6. The raw material mixing device for processing the injection molding part of the electronic equipment, according to claim 1, wherein: the surface of the T-shaped limiting block (12) is fixed with a pinching block, and the pinching block is arc-shaped.
7. The raw material mixing device for processing the injection molding part of the electronic equipment according to claim 1, wherein: the surface of the rotating ring (7) is uniformly provided with a plurality of integrated anti-skidding raised lines, and the bottom end of the rack (2) is fixed with a supporting block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210301501.8A CN114770791A (en) | 2022-03-25 | 2022-03-25 | Raw material mixing device for processing injection molding of electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210301501.8A CN114770791A (en) | 2022-03-25 | 2022-03-25 | Raw material mixing device for processing injection molding of electronic equipment |
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| Publication Number | Publication Date |
|---|---|
| CN114770791A true CN114770791A (en) | 2022-07-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210301501.8A Pending CN114770791A (en) | 2022-03-25 | 2022-03-25 | Raw material mixing device for processing injection molding of electronic equipment |
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| Country | Link |
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| CN (1) | CN114770791A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6244632B1 (en) * | 1996-07-24 | 2001-06-12 | Jott Australia Pty. Ltd. | Connection arrangement |
| CN203770886U (en) * | 2014-03-27 | 2014-08-13 | 孟桂莲 | Connecting and fastening device suitable for traditional Chinese medicine fumigation pipeline and external equipment pipeline |
| CN209455179U (en) * | 2018-12-29 | 2019-10-01 | 浙江华大树脂有限公司 | A kind of movably flexible feeding device |
| CN111705595A (en) * | 2020-06-22 | 2020-09-25 | 江南 | Back box for laying cobblestones |
| CN212092510U (en) * | 2019-12-16 | 2020-12-08 | 湖北玉亮食品股份有限公司 | Reducing mechanism is used in rice processing |
| CN216045969U (en) * | 2021-08-29 | 2022-03-15 | 邓康 | Explosion-proof pipeline connecting equipment for simple buckle |
-
2022
- 2022-03-25 CN CN202210301501.8A patent/CN114770791A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6244632B1 (en) * | 1996-07-24 | 2001-06-12 | Jott Australia Pty. Ltd. | Connection arrangement |
| CN203770886U (en) * | 2014-03-27 | 2014-08-13 | 孟桂莲 | Connecting and fastening device suitable for traditional Chinese medicine fumigation pipeline and external equipment pipeline |
| CN209455179U (en) * | 2018-12-29 | 2019-10-01 | 浙江华大树脂有限公司 | A kind of movably flexible feeding device |
| CN212092510U (en) * | 2019-12-16 | 2020-12-08 | 湖北玉亮食品股份有限公司 | Reducing mechanism is used in rice processing |
| CN111705595A (en) * | 2020-06-22 | 2020-09-25 | 江南 | Back box for laying cobblestones |
| CN216045969U (en) * | 2021-08-29 | 2022-03-15 | 邓康 | Explosion-proof pipeline connecting equipment for simple buckle |
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