CN110639758A - Liquid glue coating device - Google Patents
Liquid glue coating device Download PDFInfo
- Publication number
- CN110639758A CN110639758A CN201810679008.3A CN201810679008A CN110639758A CN 110639758 A CN110639758 A CN 110639758A CN 201810679008 A CN201810679008 A CN 201810679008A CN 110639758 A CN110639758 A CN 110639758A
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- China
- Prior art keywords
- disc
- guide
- driven
- belt
- driving part
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- 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.)
- Pending
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C3/00—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material
- B05C3/02—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material the work being immersed in the liquid or other fluent material
- B05C3/09—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material the work being immersed in the liquid or other fluent material for treating separate articles
- B05C3/10—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material the work being immersed in the liquid or other fluent material for treating separate articles the articles being moved through the liquid or other fluent material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C13/00—Means for manipulating or holding work, e.g. for separate articles
- B05C13/02—Means for manipulating or holding work, e.g. for separate articles for particular articles
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- Coating Apparatus (AREA)
Abstract
The invention relates to a liquid glue coating device, which is provided with a pressing transmission set, wherein a rolling belt which can rotate and has upward pressing force is arranged on a belt lining plate of the pressing transmission set, a glue material box which can contain liquid glue is arranged on the side wall of the belt lining plate, a guide set is also arranged, the guide set is provided with a guide disc and a driven rotary disc which have the same rotation center and are positioned above the pressing transmission set, each positioning hole which is formed by the inner concave of the outer periphery of the guide disc bears the screw to be glued so as to form a positioning part, the driven rotary disc is positioned above the rolling belt, and the passing screw is pressed against the driven rotary disc and the rolling belt so as to form another positioning part, so that the screw can be accurately moved to the glue material box to glue the glue material box without rotating or rotating, and the produced screw has better quality.
Description
Technical Field
The invention relates to a coating device for attaching liquid glue to screws moving in sequence.
Background
In the prior art, in order to save cost and ensure uniform quality when a large number of screw gluing operations are performed, an automatic gluing machine is used in the prior art to align the screws and then automatically and sequentially move the screws to a gluing mechanism for gluing, wherein the gluing area of the screw threads comprises gluing on the whole peripheral surface, gluing on the semi-peripheral surface or gluing on a specific area, so that the screws can obtain a set tightness or bonding and fixing strength after being assembled and combined.
In order to increase the production speed of the leakage-proof and anti-loose screws, the arranged screws sequentially move through the container above the liquid glue, at the moment, the liquid glue with higher concentration in the container slightly floats out of the opening above the container, so that the screw thread part of the screws passing through the container above can be adhered with the glue, the adhered liquid glue with higher concentration forms resistance to the moving screws, and further the screws generate irregular swinging deflection or are pushed to other moving screw positions, therefore, the quality of the glue on the produced and manufactured screws with specific leakage-proof or anti-loose effects is poor under the condition that the screws cannot be stably displaced, and the like.
Disclosure of Invention
The present invention is redesigned to overcome the shortcomings of the prior art, and the coating device can be used for adhering liquid rubber materials to the screws which are arranged in a dynamic way and can rotate horizontally and stably.
In order to achieve the above object, the present invention provides a liquid glue coating device, which comprises a pressing transmission set, a glue box and a guiding set, wherein each of the components is assembled on a frame, the glue box is located on the side surface of the pressing transmission set, and the guiding set is located above the pressing transmission set; the pressing transmission set comprises a belt lining plate, wherein the belt lining plate is provided with a rotatable driving wheel and a rotatable driven wheel, the driving wheel and the driven wheel are sleeved with a rolling belt, the rolling belt is an elastic annular belt body, and the rolling belt can be suspended between the driving wheel and the driven wheel; the rubber material box is a hollow box body, an opening is formed at the top end of the rubber material box, the opening faces upwards, and the rubber material box is assembled on the side wall surface of the belt lining plate and is adjacent to the rolling belt; the guide set is provided with a guide disc, a driven turntable and a plurality of magnets, the guide disc is a disc body, a plurality of positioning holes are formed in the inner concave edge surface of the guide disc, the positioning holes are in concave arc shapes and are arranged at intervals, the magnets are installed on the guide disc, the magnets correspond to the positioning holes respectively, the driven turntable is a hollow disc body, the hollow disc body is sleeved on one side of the guide disc and is provided with the same rotating center, the driven turntable can rotate relative to the guide disc, the outer edge surface of the driven turntable can be adjacent to the arc hole surface of each positioning hole, the radial direction of the driven turntable corresponds to the moving direction of the rolling belt, and the rolling belt can be attached to and pressed against the driven turntable.
The liquid glue coating device is characterized in that the top end face of the belt lining plate body is provided with an upper guide arc face, the upper guide arc face is provided with a concave arc surface and is positioned between the driving wheel and the driven wheel, the arc shape of the driven rotary disc is consistent with the concave arc surface of the upper guide arc face of the belt lining plate, and one side of the rolling belt, relative to the upper guide arc face, can be attached to and pressed against the outer edge face of the driven rotary disc.
In the liquid glue coating device, a ring groove is concavely formed in the circumferential surface of the disc body of the guide disc, a first ring piece and a second ring piece are respectively formed on two sides of the disc body, the outer diameter of the first ring piece is larger than that of the second ring piece, each positioning hole is formed in the outer edge surface of the first ring piece, and each magnet is positioned on the first ring piece; the driven rotating disk is a ring groove which is rotatably positioned on the guide disk.
The liquid glue coating device is further provided with a clamping pin group, the guide disc is provided with a first pin hole, the driven rotary disc is provided with a second pin hole, the first pin hole and the second pin hole are corresponding and in a convex shape, the clamping pin group comprises a rod body, a spring and a baffle plate, the rod body is a long rod body, one end of the rod body is provided with a rod head in a protruding mode, the peripheral surface of the other end of the rod body is provided with a protruding block in a radial protruding mode, the baffle plate is a hollow annular plate, the spring and the baffle plate are sleeved on the rod body, two end portions of the spring respectively abut against the rod head and the baffle plate, the baffle plate abuts against the protruding block, the clamping pin group penetrates through the first pin hole and the second pin hole through the rod body, and the guide disc and the driven rotary disc rotate simultaneously.
In the liquid glue coating device, the driving wheel is driven to rotate by a driving part, the driving part can adjust and control the speed of the driving wheel, the rotation center of the guide disc is driven to rotate by a driving part, the driving part can adjust and control the speed of the guide disc, and each driving part is arranged on the rack.
The liquid glue coating device is further provided with a feeder, the feeder is provided with a vibration mechanism, a feeding rail which is obliquely and transversely arranged is arranged above the vibration mechanism, one end part of the feeding rail is a discharging end, and the discharging end is positioned between the guide disc of the guide set and the belt lining plate of the abutting transmission set.
By applying the technical means of the invention, after the positioning holes arranged on the outer periphery of the guide disc bear the screws to be processed one by one, the screws are supported and positioned by the positioning holes, when each screw moves to the upper part of the belt lining plate, the lower part of each screw is under the action of the upward propping force of the rolling belt, and the upper part of each screw is propped by the driven turntable, so that each screw forms another supporting and positioning, and therefore, each screw can carry out gluing operation through the upper part of the glue material box, even when the screw is stained with thick glue material to form resistance, the movement of the screw can not generate deflection, and the produced screw can maintain the product quality.
The rolling belt driven by the driving wheel and the guide disc are adjusted and controlled by the driving part to form a transfer screw which runs at a high speed to carry out gluing operation, so that the productivity is improved; moreover, the rolling belt and the guide disc can be adjusted to be at the same speed, and the glue liquid level in the glue box is adjusted to be positioned at the 1/2 diameter position or the 3/4 diameter position of the screw, so that 1/2 peripheral surface glue dipping or 3/4 peripheral surface glue dipping can be carried out on the screw; if the moving speed of the driving wheel driving the rolling belt is adjusted to be larger than the tangential speed of the guide disc, the screw rotates and moves above the glue box to glue the whole circumference, so that the glue applying machine can meet various production requirements and has practical efficacy.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a perspective exploded view of the present invention.
FIG. 3 is a schematic diagram of the present invention after combination.
FIG. 4 is a schematic cross-sectional view of the present invention after assembly.
Fig. 5 is a partially enlarged schematic view of the present invention.
Fig. 6 is another enlarged view of the present invention.
Fig. 7 is another exploded perspective view of the present invention.
FIG. 8 is a schematic view of the present invention with the bayonet lock set disengaged from the guide plate and the driven turntable.
FIG. 9 is a schematic view of the bayonet lock set of the present invention inserted and combined with the guide plate and the driven turntable.
FIG. 10 is a schematic diagram of the operation of the present invention.
FIG. 11 is another schematic diagram of the present invention.
Detailed Description
Referring to fig. 1 and 2, the liquid glue coating apparatus of the present invention includes a pressing transmission set 10, a glue box 20 and a guiding set 30, wherein the pressing transmission set 10, the glue box 20 and the guiding set 30 are installed on a frame, the frame is a frame body of the prior art, the glue box 20 is located on a side surface of the pressing transmission set 10, and the guiding set 30 is located above the pressing transmission set 10.
The pressing transmission set 10 has a belt lining board 11, a driving wheel 12, a driven wheel 13 and a rolling belt 14, the belt lining board 11 can be a plate body, the driving wheel 12 and the driven wheel 13 are plate bodies arranged on the belt lining board 11 at intervals, the driving wheel 12 and the driven wheel 13 can rotate relative to the plate body of the belt lining board 11, in one embodiment, the driving wheel 12 is driven to rotate by a driving piece, the driving piece can be a motor used in the prior art, the motor is arranged on a frame, and the rotation center of the driving wheel 12 is connected and fixed with a corresponding motor power output shaft;
the rolling belt 14 is an elastic ring belt body which can be assembled and sleeved between the driving wheel 12 and the driven wheel 13. The top end surface of the belt lining board 11 has an upper arc guiding surface 111, the upper arc guiding surface 111 has a concave arc surface and is located between the driving wheel 12 and the driven wheel 13, in addition, the bottom end surface of the belt lining board 11 can also have a lower arc guiding surface 112, the lower arc guiding surface 112 has an arc surface, one side of the rolling belt 14 assembled between the driving wheel 12 and the driven wheel 13 is not attached to the upper arc guiding surface 111, is suspended and is located between the driving wheel 12 and the driven wheel 13, and the other side is attached to the lower arc guiding surface 112. The rolling belt 14 can be driven by the driving wheel 12 to rotate, and the driven wheel 13 will rotate at the same time, furthermore, the driving wheel 12 can be connected to a control unit, which is a conventional technique, and the control unit can control and adjust the rotation speed of the connected driving wheel 12, and further control and adjust the moving speed of the rolling belt 14.
Referring to fig. 2, 3 and 4, the glue material box 20 is a hollow box body, the top end of the glue material box is formed with an opening 21, the opening 21 faces upward, the box body of the glue material box 20 is assembled on the side wall surface of the plate body of the belt lining plate 11 and is adjacent to the rolling belt 14, liquid glue material can be contained in the box body of the glue material box 20, the liquid glue material is thick and can slightly protrude above the opening 21 of the box body, an adjusting mechanism can be arranged between the glue material box 20 and the plate body of the belt lining plate 11 to adjust the position of the glue material box 20 relative to the plate body, namely, the position of the liquid glue material can be adjusted, and the adjusting mechanism is prior art, and therefore, will not be described in detail and is not shown in the drawings.
Referring to fig. 1, 3 and 4, the guiding assembly 30 includes a guiding disc 31, a driven turntable 32, a plurality of magnets 33 and a dowel pin set 34, the guiding disc 31 is a disc body, a circular groove 311 is formed in the circular circumference of the disc body, two sides of the disc body of the guiding disc 31 are respectively formed into a first circular plate 312 and a second circular plate 313 through the circular groove 311, wherein the outer diameter of the first circular plate 312 is larger than the outer diameter of the second circular plate 313, a plurality of positioning holes 314 are formed in the outer circumference of the first circular plate 312, the positioning holes 314 are in a concave arc shape and are arranged at intervals, and each positioning hole 314 can accommodate and convey a screw 40 to be processed;
the driven turntable 32 can be a hollow disk body and is sleeved on the annular groove 311 of the guide disk 31, the driven turntable 32 and the guide disk 31 have the same rotation center, the driven turntable 32 can be located on the guide disk 31 to rotate freely, the rotation center of the guide disk 31 is driven to rotate by a driving member 35, the driving member 35 can be a motor used in the prior art, the motor is installed on the frame, the arc shape of the driven turntable 32 is consistent with the concave arc surface of the upper arc guiding surface 111 of the belt lining plate 11, and as shown in fig. 5 and 6, the outer edge surface of the driven turntable 32 can be adjacent to the arc surface of each positioning hole 314, as shown in one of the preferred embodiments, the outer edge surface of the driven turntable 32 is tangential to the extension surface of the arc surface of each positioning hole 314, and each magnet 33 is installed on the first ring piece 312 of the guide disk 31, and each magnet 33 corresponds to each positioning hole 314;
referring to fig. 7 and 8, the guiding plate 31 has a first pin hole 315 at a non-rotation center, the driven turntable 32 has a second pin hole 321 at a non-rotation center, the first pin hole 315 and the second pin hole 321 can be aligned with each other, and the first pin hole 315 and the second pin hole 321 have a hole pattern in a convex shape in one embodiment shown in the drawings;
the bayonet lock set 34 comprises a rod 340, a spring 343 and a blocking piece 344, wherein the rod 340 is a long rod, one end of which protrudes out of a rod head 341, the peripheral surface of the other end of which radially protrudes out of a protruding block 342, the blocking piece 344 is a hollow ring piece, the spring 343 and the blocking piece 344 can be sleeved on the rod 340, one end of the spring 343 is abutted against the rod head 341, the other end is abutted against one side of the blocking piece 344, and the other side of the blocking piece 344 is abutted against by the protruding block 342;
referring to fig. 9, the first pin hole 315 of the guiding plate 31 is aligned with the second pin hole 321 of the driven turntable 32, one end of the rod 340 having the protrusion 342 penetrates the first pin hole 315 and the second pin hole 321, the blocking piece 344 abuts against one side of the guiding plate 31, one end having the protrusion 342 penetrates the other side of the guiding plate 31 after compressing the spring 343, and the protrusion 342 abuts against the other side of the guiding plate 31 when rotating the rod 340, so that the guiding plate 31 and the driven turntable 32 are combined with each other.
The guiding set 30 is assembled above the pressing transmission set 20, wherein the driven turntable 32 corresponds to the rolling belt 14, so that one side of the rolling belt 14, which is opposite to the upper arc guiding surface 111, can be abutted and pressed against the outer edge surface of the driven turntable 32, the screw 40 to be processed is located in the positioning hole 314, can be attracted by the magnet 33, but the screw 40 can still rotate in the positioning hole 314, when the guiding disc 31 rotates, each screw 40 located in each positioning hole 314 can be transferred to the belt lining plate 11 of the pressing transmission set 10, at this time, each moving screw 40 is in contact with the rolling belt 14 to form non-rotating translation or self-rotation, and each screw 40 to be processed located in the positioning hole 314 is not only pressed by the upward elastic force of the rolling belt 14, but also pressed downward by the outer edge surface of the driven turntable 32 located above, so as to ensure the displacement of each screw 40; furthermore, the rotation speed of the screw 40 can be adjusted and controlled by adjusting and controlling the rotation speed of the driving wheel 12 to make the rolling belt 14 rotate, and then adjusting and controlling the rotation speed of the rolling belt 14 and the rotation speed of the guiding disc 31.
Referring to fig. 8, 10 and 11, the locking pin set 40 is removed from the guiding disc 31 and the driven rotary disc 32, so that the guiding disc 31 and the driven rotary disc 32 can rotate with each other, when the driving wheel 12 drives the rolling belt 14 to move at a speed higher than the tangential speed of the guiding disc 31, the screws 40 rotate and move through the upper side of the glue box 20, the driven rotary disc 32 abuts against each screw 40, the screws 40 can passively rotate the driven rotary disc 32 relative to the guiding disc 31, the threads of each screw 40 pass through the opening 21 and contact with the liquid glue, the liquid glue can be adhered to the entire circumference of the threads, so as to complete the gluing operation of the entire circumference, and the finished products of each glued screw 40 are taken out for the next process. Since each screw 40 will form resistance to the moving and rotating screw 40 when contacting and adhering liquid glue, each screw 40 is pushed by the driven turntable 32 and the rolling belt 14, as shown in fig. 6, and can still move in a rotating manner, so as to improve the quality of the produced screw.
Referring to fig. 9, 10 and 11, when the present invention is applied to glue around 1/2 or 3/4, the first pin holes 315 of the guiding disk 31 are aligned with the second pin holes 321 of the driven turntable 32 to be assembled and positioned by the pin sets 40, the moving speed of the rolling belt 14 and the tangential speed of the guiding disk 31 are adjusted and controlled to be constant, at this time, each screw 40 can translate and not rotate, passes through the opening 21 of the gum box 20 and contacts with the liquid gum, when the level of glue in the glue cartridge 20 is adjusted to be at 1/2 diameters of the screw 40, 1/2 peripheral glue can be applied to the threads of each screw 40, and 3/4 peripheral glue can be applied to the threads of each screw 40 when the glue level in the glue box 20 is adjusted to be 3/4 diameter of the screw 40.
As mentioned above, the present invention can not only adjust and control the speed of the rolling belt 14 and the guiding disc 31, but also increase the speed of the rolling belt 14 and the guiding disc 31 according to the capacity requirement of the actual production, so as to increase the capacity.
As shown in fig. 1, the liquid glue coating apparatus of the present invention can be further implemented by providing a feeding machine 50, the feeding machine 50 has a vibration mechanism 51, a feeding rail 52 is disposed above the vibration mechanism 51, the feeding rail 52 is disposed transversely or slightly inclined transversely, one end of the feeding device is a discharging end 521, the feeding device 50 is a prior art and will not be further described, in the embodiment shown in the drawings, which is used to transport a plurality of screws 40, each screw 40 is positioned laterally on the feed track 52, after the vibration mechanism 51 generates forward-conveying vibration, each screw 40 can be sequentially moved forward for conveying, and the discharge end 521 is located between the guiding disc 31 and the belt lining plate 11, so that each screw 40 is conveyed into each positioning hole 314 and is attracted by the magnet 33 and is pressed upwards by the rolling belt 14.
Claims (7)
1. A liquid glue coating device comprises a pressing transmission set, a glue box and a guide set, wherein each component is assembled on a rack, the glue box is positioned on the side surface of the pressing transmission set, and the guide set is positioned above the pressing transmission set;
the pressing transmission set comprises a belt lining plate, wherein the belt lining plate is provided with a rotatable driving wheel and a rotatable driven wheel, the driving wheel and the driven wheel are sleeved with a rolling belt, the rolling belt is an elastic annular belt body, and the rolling belt can be suspended between the driving wheel and the driven wheel;
the rubber material box is a hollow box body, an opening is formed at the top end of the rubber material box, the opening faces upwards, and the rubber material box is assembled on the side wall surface of the belt lining plate and is adjacent to the rolling belt;
the guide set is provided with a guide disc, a driven turntable and a plurality of magnets, the guide disc is a disc body, a plurality of positioning holes are formed in the inner concave edge surface of the guide disc, the positioning holes are in concave arc shapes and are arranged at intervals, the magnets are installed on the guide disc, the magnets correspond to the positioning holes respectively, the driven turntable is a hollow disc body, the hollow disc body is sleeved on one side of the guide disc and is provided with the same rotating center, the driven turntable can rotate relative to the guide disc, the outer edge surface of the driven turntable can be adjacent to the arc hole surface of each positioning hole, the radial direction of the driven turntable corresponds to the moving direction of the rolling belt, and the rolling belt can be attached to and pressed against the driven turntable.
2. The liquid glue application apparatus according to claim 1, characterized in that: the top end face of the belt lining plate body is provided with an upper guide arc face, the upper guide arc face is provided with a concave arc-shaped surface and is positioned between the driving wheel and the driven wheel, the arc shape of the driven rotary disc is consistent with the concave arc-shaped surface of the upper guide arc face of the belt lining plate, and one side of the rolling belt, relative to the upper guide arc face, can be attached to and pressed against the outer edge face of the driven rotary disc.
3. A liquid glue application device as claimed in claim 1 or 2, characterised in that: wherein, a ring groove is concavely formed in the circumferential surface of the disc body of the guide disc, a first ring piece and a second ring piece are respectively formed on two sides of the disc body, the outer diameter of the first ring piece is larger than that of the second ring piece, each positioning hole is formed on the outer edge surface of the first ring piece, and each magnet is positioned on the first ring piece;
the driven rotating disk is a ring groove which is rotatably positioned on the guide disk.
4. A liquid glue application device as claimed in claim 3, characterized in that: the driving wheel is driven by a driving part to rotate, the driving part can adjust and control the speed of the driving wheel, the rotating center of the guide disc is driven by a driving part to rotate, the driving part can adjust and control the speed of the guide disc, and each driving part is arranged on the rack.
5. A liquid glue application device as claimed in claim 1 or 2, characterised in that: the pin unit comprises a rod body, a spring and a baffle plate, wherein the rod body is a long rod body, one end of the rod body is provided with a rod head in a protruding mode, the peripheral surface of the other end of the rod body is provided with a protruding block in a radial protruding mode, the baffle plate is a hollow ring plate, the spring and the baffle plate are sleeved on the rod body, two end portions of the spring respectively abut against the rod head and the baffle plate, the baffle plate is abutted against by the protruding block, the pin unit penetrates through the first pin hole and the second pin hole through the rod body, and the guide disc and the driven rotary disc rotate simultaneously.
6. The liquid glue application apparatus according to claim 5, characterized in that: the driving wheel is driven by a driving part to rotate, the driving part can adjust and control the speed of the driving wheel, the rotating center of the guide disc is driven by a driving part to rotate, the driving part can adjust and control the speed of the guide disc, and each driving part is arranged on the rack.
7. The liquid glue application apparatus according to claim 1, characterized in that: the feeding machine is further provided with a vibration mechanism, a feeding track which is obliquely and transversely arranged is arranged above the vibration mechanism, one end part of the feeding track is a discharging end, and the discharging end is positioned between the guide disc of the guide set and the belt lining plate of the pressing transmission set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810679008.3A CN110639758A (en) | 2018-06-27 | 2018-06-27 | Liquid glue coating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810679008.3A CN110639758A (en) | 2018-06-27 | 2018-06-27 | Liquid glue coating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110639758A true CN110639758A (en) | 2020-01-03 |
Family
ID=68988757
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810679008.3A Pending CN110639758A (en) | 2018-06-27 | 2018-06-27 | Liquid glue coating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110639758A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112849576A (en) * | 2021-01-08 | 2021-05-28 | 李洪芳 | Facial mask production method |
| CN112849575A (en) * | 2021-01-08 | 2021-05-28 | 李洪芳 | Facial mask production facility |
-
2018
- 2018-06-27 CN CN201810679008.3A patent/CN110639758A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112849576A (en) * | 2021-01-08 | 2021-05-28 | 李洪芳 | Facial mask production method |
| CN112849575A (en) * | 2021-01-08 | 2021-05-28 | 李洪芳 | Facial mask production facility |
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