CN213379812U - Ultrasonic spot welding machine - Google Patents
Ultrasonic spot welding machine Download PDFInfo
- Publication number
- CN213379812U CN213379812U CN202022199268.6U CN202022199268U CN213379812U CN 213379812 U CN213379812 U CN 213379812U CN 202022199268 U CN202022199268 U CN 202022199268U CN 213379812 U CN213379812 U CN 213379812U
- Authority
- CN
- China
- Prior art keywords
- sliding plate
- photoelectric sensor
- guide
- fixed seat
- ultrasonic spot
- 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.)
- Active
Links
Images
Landscapes
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
The application relates to the technical field of ultrasonic welding equipment, in particular to an ultrasonic spot welding machine which comprises a rack and a welding main body, wherein a fixed seat is arranged on the rack, a guide mechanism is arranged on the fixed seat, the guide mechanism comprises a sliding plate, a guide assembly and a driving assembly, the guide assembly is positioned between the sliding plate and the fixed seat, the driving assembly drives the sliding plate to move along the vertical direction, the welding main body is arranged at the lower end of the sliding plate, and the sliding plate is arranged at the upper end of the fixed seat; the guide assembly can reduce the shaking phenomenon of the sliding plate, so that the control precision of the welding main body on the workpiece is improved, and the yield of the finished workpiece is improved.
Description
Technical Field
The application relates to the field of ultrasonic welding equipment, in particular to an ultrasonic spot welding machine.
Background
The ultrasonic spot welder is a common welding equipment, and its main components include ultrasonic generator and energy conversion welding head mechanism formed from transducer, amplitude modulator and welding head, so that in the whole process of welding and combining workpieces, it has no need of using any scaling powder, metal filler or adhesive, and possesses the advantages of large production quantity, stable quality and low cost, etc..
With respect to the related art, the inventors consider that: in the actual production process, the control precision of the welding main body is poor, so that the finished product quality of the workpiece is uneven.
SUMMERY OF THE UTILITY MODEL
In order to improve the control accuracy to the welding main part, guarantee the processingquality of work piece, this application provides an ultrasonic spot welder.
The application provides an ultrasonic spot welder adopts following technical scheme:
the utility model provides an ultrasonic spot welder, includes frame, welding main part, is equipped with the fixing base in the frame, is equipped with guiding mechanism on the fixing base, and guiding mechanism includes the sliding plate, is located between sliding plate and the fixing base and is used for reducing the direction subassembly that the sliding plate rocked and order about the drive assembly that the sliding plate removed along vertical direction, and welding main part installs in the lower extreme of sliding plate, and drive assembly installs in the fixing base upper end.
Through adopting above-mentioned technical scheme, place the work piece in the below of welding the main part, then drive assembly orders about the sliding plate along vertical direction up-and-down motion for the welding main part that is in the sliding plate lower extreme can carry out welding operation to the work piece, and the guide assembly can reduce the phenomenon of rocking of sliding plate, and then improves the control accuracy of welding the main part to the work piece, improves the off-the-shelf yields of work piece.
Preferably, the guide assembly comprises a first guide rod fixedly connected to one side of the fixed seat facing the sliding plate and a second guide rod fixedly connected to one side of the sliding plate facing the fixed seat, the driving assembly comprises a driving motor installed at the upper end of the fixed seat and a lead screw fixedly connected to one end of an output shaft of the driving motor, and the sliding plate is in threaded connection with the lead screw.
By adopting the technical scheme, the driving motor is started to drive the screw rod to rotate, so that the sliding plate moves along the extension direction of the screw rod to drive the welding main body to approach to the workpiece, and finally the welding work on the workpiece is completed; the first guide rod and the second guide rod reduce the contact area between the sliding plate and the fixed seat, so that the friction damage of the sliding plate and the fixed seat is reduced; on the other hand, the control precision of the welding body is improved.
Preferably, first guide bar is close to second guide bar one side and extends along vertical direction and is equipped with first sliding groove, and the second guide bar is equipped with the second sliding groove that corresponds with first sliding groove, and the direction subassembly still includes that the interval sets up a plurality of rollers between first sliding groove and second sliding groove.
Through adopting above-mentioned technical scheme, when the lead screw rotated, first guide bar can produce relative slip with the second guide bar, and at this moment, the roller can all produce slip and roll with the inside wall in first groove and the second groove that slides, reduces the frictional force between first guide bar and the second guide bar, leads to the condition of the wearing and tearing of first guide bar and second guide bar to take place.
Preferably, the axes of adjacent rollers are arranged in a vertical direction.
Through adopting above-mentioned technical scheme, the roller can play direction and limiting displacement to first guide bar and second guide bar, and then reduces rocking phenomenon of second guide bar.
Preferably, a clamping plate is arranged between the first guide rod and the second guide rod, and a plurality of yielding grooves corresponding to the rollers are arranged at intervals along the length direction of the clamping plate.
Through adopting above-mentioned technical scheme, when the installation, fix the joint board in first guide bar one side earlier, then wear to establish the groove of stepping down with the roller in proper order, then contradict on first sliding groove inside wall, correspond second sliding groove and first sliding groove on the second guide bar again, the convenient installation to the roller.
Preferably, the sliding plate is provided with a pressure sensor for detecting the pressure of the welding main body on the workpiece and triggering the driving motor to stop, and the pressure sensor is connected to the driving motor.
By adopting the technical scheme, when the pressure value between the ultrasonic welding head and the workpiece reaches the set value set by the pressure sensor, the driving motor stops running, the distance control precision of the sliding plate is further improved, and the yield of finished workpieces is improved.
Preferably, a magnetic grid ruler for detecting the relative sliding distance between the sliding plate and the fixed seat and triggering the driving motor to stop is arranged above the frame, and the magnetic grid ruler comprises a grid ruler fixedly connected to the lower end of the sliding plate and a reading head fixedly connected to the lower end of the fixed seat.
By adopting the technical scheme, when the grid ruler reaches the position preset by the read head, the driving motor stops running, the distance control precision of the sliding plate is further improved, and the yield of finished workpieces is improved.
Preferably, the fixed base is provided with a first photoelectric sensor and a second photoelectric sensor located below the first photoelectric sensor, and the sliding plate is provided with a first blocking sheet for blocking a light source of the first photoelectric sensor or the second photoelectric sensor and triggering the driving motor to stop.
By adopting the technical scheme, when the first blocking piece blocks the light source of the first photoelectric sensor, the driving motor stops running, and when the first blocking piece blocks the light source of the second photoelectric sensor, the driving motor stops running, so that the distance control precision of the sliding plate is further improved, and the yield of finished workpieces is improved.
Preferably, the fixing base is further provided with a third photoelectric sensor, the third photoelectric sensor is located below the second photoelectric sensor, the sliding plate is provided with a second blocking sheet, and when the first blocking sheet blocks the light source of the first photoelectric sensor, the second blocking sheet can cut off the light source of the third photoelectric sensor.
Through adopting above-mentioned technical scheme, if first photoelectric sensor became invalid, lead to sliding plate and fixing base to bump easily, cause accident, at this moment, the second blockked the piece and can blockked third photoelectric sensor's light source for driving motor stall has improved the security in the production process.
In summary, the present application includes at least one of the following beneficial technical effects:
under the combined action of the driving motor and the roller, the movement control precision of the welding main body is improved, and the yield of finished products of workpieces is improved;
the roller is playing direction and limiting displacement to first guide bar and second guide bar, improves the sliding stability of first guide bar and second guide bar.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present application.
Fig. 2 is an exploded view for showing a connection block and a magnetic scale.
Fig. 3 is an exploded view showing the snap plate and the roller.
Description of reference numerals: 1. a frame; 101. a side plate; 102. a back plate; 103. a hole of abdication; 11. an ultrasonic horn; 12. positioning a clamp; 2. a fixed seat; 201. a base plate; 202. a guide frame; 21. a sliding plate; 3. a drive motor; 31. a screw rod; 32. a coupling; 4. connecting blocks; 41. a horizontal connecting block; 42. a vertical connecting block; 5. a guide assembly; 51. a first guide bar; 511. a first sliding groove; 52. a second guide bar; 521. a second sliding groove; 53. a roller; 54. a first guide slope; 6. a clamping and connecting plate; 61. a yielding groove; 7. a pressure sensor; 71. a clamping block; 8. a magnetic grid ruler; 81. a grid ruler; 82. a read head; 9. a first photosensor; 91. a second photosensor; 92. a third photosensor; 93. a first barrier sheet; 94. a second barrier sheet.
Detailed Description
The present application is described in further detail below with reference to figures 1-3.
The embodiment of the application discloses ultrasonic spot welding machine. Referring to fig. 1 and 2, the welding machine includes a frame 1, a welding body, and a guide mechanism. In the embodiment of the present application, the rack 1 includes two side plates 101 and a back plate 102, the two side plates 101 are respectively disposed on two opposite sides of the same side of the back plate 102, and the two side plates 101 are connected to the back plate 102 by welding or other fixing methods such as bolts; in order to facilitate the installation of the guide mechanism, the rack 1 further includes a fixing base 2, in this embodiment of the present application, the fixing base 2 may include two parts, that is, a bottom plate 201 and a guide frame 202, the bottom plate 201 is installed between the two side plates 101, and the installation position may be a side away from the back plate 102, and the guide frame 202 is installed on a side of the bottom plate 201 facing the back plate 102, the installation positions of the bottom plate 201 and the guide frame 202 in this embodiment of the present application may be adjusted according to actual needs, and when a final purpose is achieved, the normal installation of the guide mechanism can still be achieved.
Referring to fig. 2 and 3, a guide mechanism is mounted on one side surface of the guide frame 202 facing the back plate 102, the guide mechanism includes a sliding plate 21 and two guide assemblies 5 located between the sliding plate 21 and the guide frame 202, a welding main body is mounted on the lower end of the sliding plate 21 by bolts, the two guide assemblies 5 are provided, each guide assembly 5 includes a first guide rod 51 fixedly connected to one side of the guide frame 202 facing the sliding plate 21 and a second guide rod 52 fixedly connected to one side of the sliding plate 21 facing the guide frame 202, in the embodiment, the first guide rod 51 is connected to the guide frame 202 by other fixing methods such as welding or bolts, and the second guide rod 52 is connected to the sliding plate 21 by other fixing methods such as welding or bolts.
The guide mechanism further comprises a drive assembly installed on one side of the guide frame 202 far away from the bottom plate 201, in the embodiment, the drive assembly comprises a drive motor 3 installed on the upper end of the guide frame 202 and a screw rod 31 fixedly connected to one end of an output shaft of the drive motor 3, the drive motor 3 is fixed to the guide frame 202 through fixing modes such as bolts, the drive motor 3 is connected with the screw rod 31 through a coupler 32, a clamping block 71 is used on the screw rod 31 in a threaded fit mode, a connecting block 4 connected with the sliding plate 21 is installed on the lower side of the clamping block 71, the connecting block 4 comprises a horizontal connecting block 41 and a vertical connecting block 42, the vertical connecting block 42 is connected with the sliding plate 21 through bolts and the like, the vertical connecting block 42 is connected with the horizontal connecting block 41 through a welding mode, and the horizontal.
In order to reduce the friction between the first guide rod 51 and the second guide rod 52, in the embodiment, a first sliding slot 511 is vertically disposed on a side of the first guide rod 51 close to the second guide rod 52, a second sliding slot 521 is vertically disposed on a side of the second guide rod 52 close to the first guide rod 51, the first sliding slot 511 is communicated with the second sliding slot 521, a plurality of rollers 53 are disposed in the first sliding slot 511, one end surface of each guide circular tube abuts against one side of the first sliding slot 511, and the other end abuts against an opposite side of the second sliding slot 521, when the first guide rod 51 and the second guide rod 52 slide relatively, the rollers 53 play a role of reducing the friction.
In order to reduce the occurrence of shaking phenomenon caused by the sliding plate 21 and the guide frame 202 during actual operation, in the embodiment, the axes of the adjacent rollers 53 are arranged in the vertical direction, so that the rollers 53 can limit the first guide rod 51 and the second guide rod 52, and the shaking phenomenon is reduced; in order to facilitate installation and fixation of the roller 53, in an embodiment, the clamping plate 6 is arranged between the first guide rod 51 and the second guide rod 52, the clamping plate 6 is provided with a plurality of yielding grooves 61 at intervals along the length direction of the clamping plate 6, during installation, the roller 53 is firstly inserted into the yielding grooves 61, then the clamping plate 6 is close to the first guide rod 51, so that one end of the roller 53 is abutted against the side wall of the first sliding groove 511, then the second guide rod 52 is correspondingly matched with the first guide rod 51, and finally the sliding plate 21 is fixed with the first guide rod 51, so that the installation of the guide assembly 5 is realized; in order to facilitate the clamping of the roller 53 and the clamping plate 6, first guide slopes 54 are provided at both end edges of the roller 53.
In the embodiment of the application, the welding main body includes an ultrasonic welding head installed at the lower end of the sliding plate 21, the ultrasonic welding head 11 is connected with the sliding plate 21 through a bolt, the back plate 102 is provided with a yielding hole 103 along the vertical direction, one end of the ultrasonic welding head 11 penetrates through and penetrates out of the yielding hole 103, one side of the back plate 102, which is far away from the sliding plate 21, is provided with a positioning fixture 12, the positioning fixture 12 is located below the ultrasonic welding head 11, and the positioning fixture 12 is connected with the back plate 102 through a bolt or a welding mode.
In order to improve the welding precision of the ultrasonic welding head 11 to the workpiece, a pressure sensor 7 for detecting the pressure of the ultrasonic welding head 11 to the workpiece and triggering the driving motor 3 to stop is arranged on the horizontal connecting block 41, the pressure sensor 7 is connected with the horizontal connecting block 41 through a bolt, the pressure sensor 7 is electrically connected with a processor, the processor is electrically connected with the driving motor 3, the pressure sensor 7 is connected with the horizontal connecting block 41 through a bolt, the lower end of the clamping block 71 is embedded at the upper end of the pressure sensor 7, and under the combined action of the sliding plate 21 and the connecting block 4, when the screw rod 31 rotates, the clamping block 71 cannot rotate; on the contrary, when the screw rod 31 rotates, the connecting block 4 moves up and down along the vertical direction to drive the sliding plate 21 to drive the ultrasonic welding head 11 to weld the workpiece, and when the pressure value between the ultrasonic welding head 11 and the workpiece reaches the set value set by the pressure sensor 7, the driving motor 3 stops operating, so that the distance control precision of the sliding plate 21 is improved.
In order to further improve the distance control precision of the sliding plate 21, a magnetic grid ruler 8 for detecting the relative sliding distance between the sliding plate 21 and the guide frame 202 and triggering the driving motor 3 to stop is arranged on the frame 1, the magnetic grid ruler 8 comprises a grid ruler 81 fixedly connected to one side of the welding main body and a read head 82 fixedly connected to the lower end of the guide frame 202, the grid ruler 81 is connected with the welding main body through a bolt, the read head 82 is connected with the guide frame 202 through a bolt, the read head 82 is electrically connected with the processor, the grid ruler 81 can move along with the movement of the sliding plate 21, when the grid ruler 81 moves to a preset position of the read head 82, the driving motor 3 stops running, so that the sliding plate 21 stops sliding, the distance control precision of the sliding plate 21 is improved, and the yield of workpieces is improved.
In the embodiment of the present application, a first photosensor 9 and a second photosensor 91 are mounted on one side of the guide frame 202 close to the side plate 101, the first photosensor 9 and the second photosensor 91 are both connected to the guide frame 202 by bolts, the first photosensor 9 and the second photosensor 91 are both electrically connected to the processor, and the distance between the first photosensor 9 and the second photosensor 91 is equal to the distance that the sliding plate 21 needs to move, a first blocking plate 93 is mounted on one side of the sliding plate 21 close to the side plate 101, the first blocking plate 93 is connected to the sliding plate 21 by bolts, during a welding operation, the first blocking plate 93 moves along with the movement of the sliding plate 21, when the first blocking plate 93 moves to block the light source of the first photosensor 9, the driving motor 3 stops operating, when the first blocking plate 93 blocks the light source of the second photosensor 91, the driving motor 3 stops running, the distance control precision of the sliding plate 21 is improved, and the yield of finished workpieces is improved.
If the first photoelectric sensor 9 suddenly fails, the sliding plate 21 and the fixed seat 2 are likely to collide to cause an accident, so that the third photoelectric sensor 92 is installed on one side of the guide frame 202 close to the side plate 101, the third photoelectric sensor 92 is connected to the guide frame 202 through a bolt, the third photoelectric sensor 92 is located below the second photoelectric sensor 91, the sliding plate 21 is provided with the second blocking piece 94, the second blocking piece 94 is connected to the sliding plate 21 through a bolt, the third photoelectric sensor 92 is electrically connected to the processor, when the first blocking piece 93 blocks the light source of the first photoelectric sensor 9, the second blocking piece 94 can cut off the light source of the third photoelectric sensor 92, so that even if the first photoelectric sensor 9 fails, the third photoelectric sensor 92 can control the driving motor 3, and the safety in the production process is improved.
The implementation principle of the ultrasonic spot welding machine in the embodiment of the application is as follows: the workpiece is fixed through the positioning fixture 12, then the driving motor 3 is started to drive the screw rod 31 to rotate, the sliding plate 21 is driven to move downwards along the length direction of the guide frame 202, and under the common control of the pressure sensor 7, the magnetic grid ruler 8, the first photoelectric sensor 9 and the second photoelectric sensor 91, the ultrasonic welding head 11 can be in contact with the workpiece, the welding work on the workpiece is completed, the movement control precision of a welding main body is improved, and the yield of finished workpieces is further improved.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (9)
1. The utility model provides an ultrasonic spot welder, includes frame (1), welding main part, its characterized in that: the welding machine is characterized in that a fixed seat (2) is arranged on the rack (1), a guide mechanism is arranged on the fixed seat (2), the guide mechanism comprises a sliding plate (21), a guide component (5) which is located between the sliding plate (21) and the fixed seat (2) and used for reducing the shaking of the sliding plate (21), and a driving component for driving the sliding plate (21) to move along the vertical direction, the welding main body is arranged at the lower end of the sliding plate (21), and the driving component is arranged at the upper end of the fixed seat (2).
2. An ultrasonic spot welder according to claim 1, characterized in that: the guide assembly (5) comprises a first guide rod (51) fixedly connected to one side, facing the sliding plate (21), of the fixed seat (2) and a second guide rod (52) fixedly connected to one side, facing the fixed seat (2), of the sliding plate (21), the driving assembly comprises a driving motor (3) installed at the upper end of the fixed seat (2) and a screw rod (31) fixedly connected to one end of an output shaft of the driving motor (3), and the sliding plate (21) is in threaded connection with the screw rod (31).
3. An ultrasonic spot welder according to claim 2, characterized in that: first guide bar (51) are close to second guide bar (52) one side is equipped with first groove (511) that slides along vertical direction extension, second guide bar (52) be equipped with second groove (521) that slides that first groove (511) correspond, direction subassembly (5) still including the interval set up in first groove (511) that slides with a plurality of roller (53) between second groove (521) that slides.
4. An ultrasonic spot welder according to claim 3, characterized in that: the axes of the adjacent rollers (53) are arranged in the vertical direction.
5. An ultrasonic spot welder according to claim 4, characterized in that: be equipped with joint board (6) between first guide bar (51) and second guide bar (52), joint board (6) along its length direction interval be provided with a plurality of with roller (53) correspond abdication groove (61).
6. An ultrasonic spot welder according to claim 2, characterized in that: and a pressure sensor (7) for detecting the pressure of the welding main body on a workpiece and triggering the driving motor (3) to stop is arranged on the sliding plate (21), and the pressure sensor (7) is connected to the driving motor (3).
7. An ultrasonic spot welder according to claim 2, characterized in that: and a magnetic grid ruler (8) for detecting the relative sliding distance between the sliding plate (21) and the fixed seat (2) and triggering the driving motor (3) to stop is arranged above the rack (1), and the magnetic grid ruler (8) comprises a grid ruler (81) fixedly connected to the lower end of the sliding plate (21) and a read head (82) fixedly connected to the lower end of the fixed seat (2).
8. An ultrasonic spot welder according to claim 2, characterized in that: the fixing seat (2) is provided with a first photoelectric sensor (9) and a second photoelectric sensor (91) located below the first photoelectric sensor (9), and the sliding plate (21) is provided with a first blocking sheet (93) used for blocking a light source of the first photoelectric sensor (9) or the second photoelectric sensor (91) and triggering the driving motor (3) to stop.
9. An ultrasonic spot welder according to claim 8, characterized in that: the fixing seat (2) is further provided with a third photoelectric sensor (92), the third photoelectric sensor (92) is located below the second photoelectric sensor (91), the sliding plate (21) is provided with a second blocking sheet (94), and when the first blocking sheet (93) blocks the light source of the first photoelectric sensor (9), the second blocking sheet (94) can cut off the light source of the third photoelectric sensor (92).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022199268.6U CN213379812U (en) | 2020-09-29 | 2020-09-29 | Ultrasonic spot welding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022199268.6U CN213379812U (en) | 2020-09-29 | 2020-09-29 | Ultrasonic spot welding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213379812U true CN213379812U (en) | 2021-06-08 |
Family
ID=76184971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022199268.6U Active CN213379812U (en) | 2020-09-29 | 2020-09-29 | Ultrasonic spot welding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213379812U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115415660A (en) * | 2022-08-31 | 2022-12-02 | 无锡安姆特科技有限公司 | Servo motor loading type ultrasonic spot welding machine |
-
2020
- 2020-09-29 CN CN202022199268.6U patent/CN213379812U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115415660A (en) * | 2022-08-31 | 2022-12-02 | 无锡安姆特科技有限公司 | Servo motor loading type ultrasonic spot welding machine |
| CN115415660B (en) * | 2022-08-31 | 2024-05-10 | 无锡安姆特科技有限公司 | Servo motor loading type ultrasonic spot welder |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101920420B (en) | Alien tank inclined joint automatic welding machine | |
| CN213379812U (en) | Ultrasonic spot welding machine | |
| CN110202642B (en) | Novel CCD automatic deviation rectifying die cutting machine | |
| CN201807845U (en) | Automatic welding machine for special-shaped inclined joints of tanks | |
| CN213224719U (en) | Compact double-guide-rail ultrasonic metal welding machine | |
| CN211414030U (en) | Transmission hold-down mechanism and ultrasonic welding machine | |
| CN210820016U (en) | Grooving device for floor processing | |
| CN109369000B (en) | Glass cutting machine | |
| CN215998473U (en) | Shearing mechanism and machining device | |
| CN213764465U (en) | Welding pressure and displacement control mechanism that sinks | |
| CN109277749B (en) | Positioning device of high-precision laser butt welding machine | |
| CN210451549U (en) | Plate friction stir welding fixing tool | |
| CN113953667A (en) | Multi-angle welded pipeline laser spot welding robot and welding method thereof | |
| CN220993323U (en) | Welding equipment for frame body machining | |
| CN216938622U (en) | Two-way keyway planer | |
| CN218192797U (en) | Transverse cutter mechanism | |
| JPS5828443A (en) | Self-traveling type machining device | |
| CN213764466U (en) | Laser position adjusting mechanism | |
| CN213352763U (en) | Wood lathe | |
| CN214921343U (en) | Ultrasonic welding mechanism | |
| CN221454180U (en) | Wire bending manipulator and wire bending automaton | |
| CN215546781U (en) | Tooth broaching tool for sector teeth | |
| CN218365078U (en) | Automatic section aligning, positioning and clamping mechanism | |
| CN214920815U (en) | Milling flutes frock on PVC floor | |
| CN216969158U (en) | Embossing roller automatic control device for embossing machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |