CN215661423U - Lifting type driving mold locking mechanism - Google Patents
Lifting type driving mold locking mechanism Download PDFInfo
- Publication number
- CN215661423U CN215661423U CN202121961333.2U CN202121961333U CN215661423U CN 215661423 U CN215661423 U CN 215661423U CN 202121961333 U CN202121961333 U CN 202121961333U CN 215661423 U CN215661423 U CN 215661423U
- Authority
- CN
- China
- Prior art keywords
- locking
- pull rod
- mold
- pull
- slide
- 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
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The utility model discloses a lifting type driving mold locking mechanism which is used for locking a moving mold on a fixed mold and comprises two groups of mold locking pull rods, two mold locking pull blocks, two groups of pull rod driving assemblies and two groups of pull rod locking assemblies, wherein the two groups of mold locking pull rods are positioned at two sides of the fixed mold, the pull rod driving assemblies comprise a ball screw and a servo motor, one end of each group of mold locking pull rods is connected through one mold locking pull block, the other end of each group of mold locking pull rods sequentially penetrates through the fixed mold and the moving mold and then is connected with the pull rod locking assemblies, one end of the ball screw is connected to the mold locking pull blocks, the other end of the ball screw penetrates through the fixed mold and then is exposed out of the fixed mold, a screw rod through hole matched with the ball screw is arranged on the moving mold, and the servo motor is connected to a ball nut of the ball screw. The utility model can realize fast mode locking, has low failure occurrence rate and low maintenance cost, cancels a hydraulic power assembly, has no insufficient pressure maintaining and oil leakage phenomena, can prevent the workshop environment and the equipment working environment from being polluted, has fast power transmission and high mode locking efficiency, and improves the production efficiency.
Description
Technical Field
The utility model relates to a part of a foaming machine forming machine, in particular to a lifting type driving mold locking mechanism.
Background
The mold locking mechanism is a necessary mechanism for locking the movable mold on the fixed mold in the foaming forming machine; the conventional die-shifting locking mechanism usually adopts a hydraulic power assembly to tension a die-shifting or push the die-shifting, and the structure is greatly influenced by the hydraulic power assembly, so that the failure occurrence rate of the hydraulic power assembly is high, and the maintenance cost is high; meanwhile, a hydraulic mode locking structure is adopted, the problem that the pressure of a machine locking mould is not kept constant is more, oil leakage is easy to occur, and workshop oil pollution is caused; the hydraulic drive mode locking is directly stopped when the hydraulic drive mode locking is in the position, the hydraulic drive mode locking cannot be automatically adjusted, and the feeding position is unstable due to accumulated errors, machine guide rod abrasion and oil cylinder abrasion; and the power transmission of the hydraulic power assembly is slower, so that the mold locking speed is influenced, and the production efficiency is reduced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the defects and shortcomings in the prior art, provides a method for locking a mode locking pull rod after a driving cylinder is adopted to drive a pull rod locking assembly to lift, and the servo motor drives the ball screw to act to quickly tension the mold locking pull rod, so that the rapid and stable mold locking can be realized, the failure occurrence rate is low, the maintenance cost is low, meanwhile, a hydraulic power assembly is cancelled, the phenomena of insufficient pressure maintaining and oil leakage do not exist, the pollution of workshop environment and equipment working environment can be prevented, the servo motor drives the ball screw to act, the in-place position of the mold moving can be automatically adjusted according to the actual condition, so that the precision of feeding control is high, the power of a servo motor is small, the mold locking force is large and stable, the mold moving walking is stable, the service life is long, and the power transmission is fast, and the mold locking efficiency is ensured, so that the production efficiency is improved.
The technical scheme of the utility model is as follows: the utility model provides a promotion formula drive clamping mechanism for with shifting mold locking on solid mould, including the mode locking draw bar that is located two sets of mode locking draw bars of solid mould both sides, two cooperation mode locking draw blocks of mode locking draw bar, the pull rod drive assembly of two sets of drive mode locking draw bar actions and the pull rod locking assembly of two sets of cooperation mode locking draw bars, pull rod drive assembly includes ball screw and the servo motor who drives the ball screw action, and the one end of every group mode locking draw bar is connected through a mode locking draw block, and the other end of mode locking draw bar passes solid mould in proper order and is connected with pull rod locking assembly behind the shifting mould, the one end of ball screw is connected on the mode locking draw block, and the other end of ball screw exposes outside solid mould after passing solid mould, is equipped with the lead screw perforation of cooperation ball screw on the shifting mould, servo motor connects on ball screw's ball nut.
The mold locking device adopts the driving cylinder to drive the pull rod locking assembly to lock the mold locking pull rod after being lifted, and drives the ball screw to act through the servo motor to quickly tension the mold locking pull rod, so that the rapid and stable mold locking can be realized, the fault occurrence rate is low, the maintenance cost is low, meanwhile, the hydraulic power assembly is cancelled, the phenomena of insufficient pressure maintaining and oil leakage do not exist, the pollution to the workshop environment and the equipment working environment can be prevented, and the servo motor drives the ball screw to act to automatically adjust the mold moving position according to the actual condition, so that the precision of material feeding control is high, the power of the servo motor is small, the mold locking force is large and stable, the mold moving walking is stable, the service life is long, the power transmission is fast, the mold locking efficiency is ensured, and the production efficiency is improved.
Preferably, every group pull rod locking subassembly includes that at least one pull rod locking slide, at least one slide backing plate and at least one drive pull rod locking slide are gliding on the slide backing plate and drive actuating cylinder, be equipped with the pull rod perforation and the pull rod lockhole of intercommunication each other on the pull rod locking slide, the tip of mode locking pull rod is equipped with the pull rod locked groove of cooperation pull rod lockhole, the width of pull rod lockhole is less than the diameter of mode locking pull rod.
The structure can ensure the locking effect of the pull rod locking assembly on the mold locking pull rod, thereby ensuring the tensioning mold locking pull rod which can be better formed by the servo motor and the ball screw and further ensuring the mold locking effect.
Preferably, each group of mode locking pull rods comprises an upper mode locking pull rod and a lower mode locking pull rod, each mode locking pull rod corresponds to one pull rod locking sliding plate and one sliding plate base plate, and the two pull rod locking sliding plates share one driving cylinder for driving.
The structure further ensures the locking effect of the locking mold pull rod, and has simple structure and reliable locking.
Preferably, two pull rod locking slide boards divide into the upper pull rod locking slide board of cooperation upper mould locking pull rod and the cooperation lower pull rod locking slide board of locking pull rod down, and two slide backing plates divide into the upper slide backing plate of cooperation upper pull rod locking slide board and the cooperation lower slide backing plate of lower pull rod locking slide board, and the lower extreme of upper slide backing plate is equipped with the trace board, and the upper end of lower slide backing plate is equipped with down the trace board, connects through two connecting rods between two trace boards, the upside of the lower trace board is connected to the piston rod tip connection upper trace board of actuating cylinder or connection lower.
The structure ensures that the linkage of the upper pull rod locking sliding plate and the lower pull rod locking sliding plate is more stable and reliable.
Preferably, the both sides of top slide backing plate are equipped with the top slide stopper of cooperation pull rod locking slide, the both sides of bottom slide backing plate are equipped with the bottom slide stopper of cooperation pull rod locking slide, be equipped with the antifriction plate between top pull rod locking slide and the top slide backing plate, be equipped with down the antifriction plate between bottom pull rod locking slide and the bottom slide backing plate.
The structure ensures that the upper pull rod locking sliding plate slides on the upper sliding plate base plate more stably and reliably, and ensures that the lower pull rod locking sliding plate slides on the lower sliding plate base plate more stably and reliably.
Preferably, a motor shaft of the servo motor is connected with a ball nut through a gear box, the gear box is installed on the fixed die through a gear transmission box body and far away from the die moving side, and one end of the ball screw is connected with the middle of the die locking and pulling block through a screw rod seat.
The structure ensures that the action of the servo motor driving the ball screw is more stable and reliable.
Preferably, the upper end of the mode locking pull block is provided with an upper mounting elbow matched with the upper mode locking pull rod, the lower end of the mode locking pull block is provided with a lower mounting elbow matched with the lower mode locking pull rod, one end of the upper mode locking pull rod passes through the upper mounting elbow and then is locked through the locking nut, and one end of the lower mode locking pull rod passes through the lower mounting elbow and then is locked through the locking nut.
The structure ensures that one end of each mode locking pull rod is firmly and reliably installed, thereby further ensuring the tensioning mode locking effect of the mode locking pull rod.
Preferably, the driving cylinder is fixed on the moving die through a cylinder frame and far away from the die fixing side, a piston rod of the driving cylinder faces downwards, the end part of the piston rod is connected with the middle part of the lower linkage plate, and one side of the driving cylinder is provided with a proximity switch.
The structure ensures that the driving cylinder is firmly and reliably installed and simultaneously ensures that the action of the driving cylinder is timely and reliable.
A mode locking method of a lifting type driving mode locking mechanism comprises the following steps:
1) when the mold moving plate moves to a specified position, each mold locking pull rod penetrates through the mold moving plate and then penetrates out of a pull rod through hole of the corresponding pull rod locking sliding plate, and the position of a pull rod lock groove on each mold locking pull rod is aligned with the position of a pull rod lock hole;
2) the driving cylinder receives an instruction to drive the pull rod locking sliding plate to slide downwards, so that a pull rod groove on the mode locking pull rod is clamped in the pull rod locking hole;
3) then the servo motor moves to drive the ball nut to rotate, so that the ball screw drives the mold locking pull block to move towards the direction far away from the mold fixing direction, the corresponding mold locking pull rod is tensioned, and the movable mold is firmly locked on the fixed mold.
The mold locking device adopts the driving cylinder to drive the pull rod locking assembly to lock the mold locking pull rod after being lifted, and drives the ball screw to act through the servo motor to quickly tension the mold locking pull rod, so that the rapid and stable mold locking can be realized, the fault occurrence rate is low, the maintenance cost is low, meanwhile, the hydraulic power assembly is cancelled, the phenomena of insufficient pressure maintaining and oil leakage do not exist, the pollution to the workshop environment and the equipment working environment can be prevented, and the servo motor drives the ball screw to act to automatically adjust the mold moving position according to the actual condition, so that the precision of material feeding control is high, the power of the servo motor is small, the mold locking force is large and stable, the mold moving walking is stable, the service life is long, the power transmission is fast, the mold locking efficiency is ensured, and the production efficiency is improved.
Drawings
FIG. 1 is a schematic view of one of the angles of the present invention;
FIG. 2 is a schematic view of another embodiment of the present invention;
FIG. 3 is a schematic structural view of an upper mold clamping rod and a lower mold clamping rod according to the present invention;
FIG. 4 is a schematic structural view of the pull rod locking assembly of the present invention;
in the drawing, 1, a moving die, 2, a ball screw, 3, a ball nut, 4, a servo motor, 5, a fixed die, 6, a driving cylinder, 7, a mold locking pull block, 8, a screw rod seat, 9, a gear box, 10, a screw rod through hole, 11, an upper mold locking pull rod, 12, a lower mold locking pull rod, 13, an upper pull rod locking slide plate, 14, a lower pull rod locking slide plate, 15, an upper slide plate backing plate, 16, a lower slide plate backing plate, 17, an upper slide plate limiting block, 18, a lower slide plate limiting block, 19, an upper wear plate, 20, a lower wear plate, 21, an upper linkage plate, 22, a lower linkage plate, 23, a pull rod through hole, 24, a pull rod locking hole, 25, a pull rod locking groove, 26, a connecting rod, 27, a cylinder frame, 28, an upper mounting elbow, 29, a lower mounting elbow and 30 a proximity switch are arranged.
Detailed Description
The present invention will be described in further detail with reference to the attached drawings, but the present invention is not limited thereto.
As shown in fig. 1-4, a lifting type driving mold locking mechanism is used for locking a movable mold 1 on a fixed mold 5, the mold locking mechanism comprises two groups of mold locking pull rods positioned on two sides of a fixed mold 5, two mold locking pull blocks 7 matched with the mold locking pull rods, two groups of pull rod driving assemblies driving the mold locking pull rods to move and two groups of pull rod locking assemblies matched with the mold locking pull rods, each pull rod driving assembly comprises a ball screw 2 and a servo motor 4 driving the ball screw 2 to move, one end of each group of mold locking pull rods is connected with one mold locking pull block 7, the other end of each mold locking pull rod 7 sequentially penetrates through the fixed mold 5 and moves the mold 1 to be connected with the pull rod locking assemblies, one end of each ball screw 2 is connected to the mold locking pull block 7, the other end of each ball screw 2 penetrates through the fixed mold 5 to be exposed outside the fixed mold 5, a screw penetrating hole 10 matched with the ball screw 2 is formed in the moving mold 1, and the servo motor 4 is connected to a ball nut 3 of the ball screw 2. Each group of pull rod locking assemblies comprises two pull rod locking sliding plates, two sliding plate base plates and a driving cylinder 6 for driving the pull rod locking sliding plates to slide on the sliding plate base plates, the pull rod locking sliding plates are provided with pull rod through holes 23 and pull rod locking holes 24 which are communicated with each other, the end parts of the mode locking pull rods are provided with pull rod locking grooves 25 matched with the pull rod locking holes 24, and the width of the pull rod locking holes 24 is smaller than the diameter of the mode locking pull rods. Each group of mode locking pull rods comprises an upper mode locking pull rod 11 and a lower mode locking pull rod 12, each mode locking pull rod corresponds to a pull rod locking sliding plate and a sliding plate base plate, and the two pull rod locking sliding plates share one driving cylinder for driving. The two pull rod locking sliding plates are divided into an upper pull rod locking sliding plate 13 matched with the upper mold locking pull rod 11 and a lower pull rod locking sliding plate 14 matched with the lower locking pull rod 12, the two sliding plate cushion plates are divided into an upper sliding plate cushion plate 15 matched with the upper pull rod locking sliding plate 13 and a lower sliding plate cushion plate 16 matched with the lower pull rod locking sliding plate 14, an upper linkage plate 21 is arranged at the lower end of the upper sliding plate cushion plate 15, a lower linkage plate 22 is arranged at the upper end of the lower sliding plate cushion plate 16, the two linkage plates are connected through two connecting rods 26, and the end part of a piston rod of the driving cylinder 6 is connected with the upper side of the lower linkage plate 22. An upper slide limiting block 17 matched with the upper pull rod locking slide plate 13 is arranged on two sides of the upper slide plate backing plate 15, a lower slide plate limiting block 18 matched with the lower pull rod locking slide plate 14 is arranged on two sides of the lower slide plate backing plate 16, an upper wear-resisting plate 19 is arranged between the upper pull rod locking slide plate 13 and the upper slide plate backing plate 15, and a lower wear-resisting plate 20 is arranged between the lower pull rod locking slide plate 14 and the lower slide plate backing plate 16. A motor shaft of the servo motor 4 is connected with the ball nut 3 through a gear box 9, a box body of the gear box 9 is installed on the fixed die 5 and far away from the side of the moving die 1, and one end of the ball screw 2 is connected with the middle of the die locking pulling block 7 through a screw rod seat 8. The upper end of the mode locking pull block 7 is provided with an upper mounting elbow 28 matched with the upper mode locking pull rod 11, the lower end of the mode locking pull block 7 is provided with a lower mounting elbow 29 matched with the lower mode locking pull rod 12, one end of the upper mode locking pull rod 11 passes through the upper mounting elbow 28 and then is locked through a locking nut, and one end of the lower mode locking pull rod 12 passes through the lower mounting elbow 29 and then is locked through a locking nut. The driving air cylinder 6 is fixed on the moving die 1 through an air cylinder frame 27 and far away from the fixed die 5 side, a piston rod of the driving air cylinder 6 faces downwards, the end part of the piston rod is connected with the middle part of the lower linkage plate 22, and one side of the driving air cylinder 6 is provided with a proximity switch 30.
A mode locking method of a lifting type driving mode locking mechanism comprises the following steps:
1) when the mold moving plate moves to a specified position, each mold locking pull rod penetrates through the mold moving plate and then penetrates out of a pull rod through hole of the corresponding pull rod locking sliding plate, and the position of a pull rod lock groove on each mold locking pull rod is aligned with the position of a pull rod lock hole;
2) the driving cylinder receives an instruction to drive the pull rod locking sliding plate to slide downwards, so that a pull rod groove on the mode locking pull rod is clamped in the pull rod locking hole;
3) then the servo motor moves to drive the ball nut to rotate, so that the ball screw drives the mold locking pull block to move towards the direction far away from the mold fixing direction, the corresponding mold locking pull rod is tensioned, and the movable mold is firmly locked on the fixed mold.
The servo motor, the ball screw, the gear box, the driving cylinder and the proximity switch are conventional components purchased from the market, and the specific structure and the working process of the servo motor are conventional means, so detailed description is omitted.
A pair of direction changing gears in the gear box are respectively connected with a motor shaft of the servo motor and the ball nut, and the power of the servo motor is transmitted to the ball nut.
The mold locking device adopts the driving cylinder to drive the pull rod locking assembly to lock the mold locking pull rod after being lifted, and drives the ball screw to act through the servo motor to quickly tension the mold locking pull rod, so that the rapid and stable mold locking can be realized, the fault occurrence rate is low, the maintenance cost is low, meanwhile, the hydraulic power assembly is cancelled, the phenomena of insufficient pressure maintaining and oil leakage do not exist, the pollution to the workshop environment and the equipment working environment can be prevented, and the servo motor drives the ball screw to act to automatically adjust the mold moving position according to the actual condition, so that the precision of material feeding control is high, the power of the servo motor is small, the mold locking force is large and stable, the mold moving walking is stable, the service life is long, the power transmission is fast, the mold locking efficiency is ensured, and the production efficiency is improved.
Claims (8)
1. The utility model provides a promotion formula drive clamping mechanism for with shifting die locking on solid mould which characterized in that: the mold locking mechanism comprises two groups of mold locking pull rods positioned on two sides of a fixed mold, two mold locking pull blocks matched with the mold locking pull rods, two groups of pull rod driving assemblies driving the mold locking pull rods to move and two groups of pull rod locking assemblies matched with the mold locking pull rods, wherein each pull rod driving assembly comprises a ball screw and a servo motor driving the ball screw to move, one end of each group of mold locking pull rods is connected with one mold locking pull block, the other end of each mold locking pull rod sequentially penetrates through the fixed mold and the movable mold and then is connected with the pull rod locking assemblies, one end of each ball screw is connected onto the mold locking pull block, the other end of each ball screw penetrates through the fixed mold and then is exposed out of the fixed mold, a screw rod through hole matched with the ball screw is arranged on the movable mold, and the servo motor is connected onto a ball nut of the ball screw.
2. The lift-driven clamping mechanism of claim 1, wherein: every group pull rod locking subassembly includes that at least one pull rod locking slide, at least one slide backing plate and at least one drive pull rod locking slide are gliding on the slide backing plate and are driven actuating cylinder, be equipped with the pull rod perforation and the pull rod lockhole of intercommunication each other on the pull rod locking slide, the tip of mode locking pull rod is equipped with the pull rod locked groove of cooperation pull rod lockhole, the width of pull rod lockhole is less than the diameter of mode locking pull rod.
3. The lift-driven clamping mechanism of claim 2, wherein: each group of mode locking pull rods are divided into an upper mode locking pull rod and a lower mode locking pull rod, each mode locking pull rod corresponds to one pull rod locking sliding plate and one sliding plate base plate, and the two pull rod locking sliding plates share one driving cylinder for driving.
4. A lift-driven clamping mechanism as defined in claim 3, wherein: two pull rod locking slide boards divide into the cooperation and lock the last pull rod locking slide board of mode locking pull rod and the cooperation down pull rod locking slide board of locking pull rod down, and two slide backing plates divide into the cooperation and go up the upper slide backing plate of pull rod locking slide board and the cooperation down slide backing plate of pull rod locking slide board down, and the lower extreme of upper slide backing plate is equipped with the trace board, and the upper end of lower slide backing plate is equipped with down the trace board, connects through two connecting rods between two trace boards, drive the upside of the downside of the trace board or connection down trace board on the piston rod end portion of actuating cylinder.
5. The lift-driven clamping mechanism of claim 4, wherein: the two sides of the upper sliding plate backing plate are provided with upper sliding plate limiting blocks matched with the upper pull rod locking sliding plates, the two sides of the lower sliding plate backing plate are provided with lower sliding plate limiting blocks matched with the lower pull rod locking sliding plates, an upper wear-resisting plate is arranged between the upper pull rod locking sliding plates and the upper sliding plate backing plate, and a lower wear-resisting plate is arranged between the lower pull rod locking sliding plates and the lower sliding plate backing plate.
6. The lift-driven clamping mechanism of claim 4, wherein: a motor shaft of the servo motor is connected with a ball nut through a gear box, a box body of the gear box is arranged on the fixed die and far away from the die moving side, and one end of a ball screw is connected with the middle part of the die locking pulling block through a screw rod seat.
7. The lift-driven clamping mechanism of claim 6, wherein: the upper end of mode locking draw block is equipped with the last installation elbow that cooperates the mode locking pull rod, and the lower extreme of mode locking draw block is equipped with the lower installation elbow that cooperates mode locking pull rod down, the one end of going up the mode locking pull rod is passed and is installed the elbow after and lock through lock nut, the one end of mode locking pull rod is passed down and is installed the elbow after and lock through lock nut.
8. The lift-driven clamping mechanism of claim 4, wherein: the driving cylinder is fixed on the moving die through a cylinder frame and far away from the die fixing side, a piston rod of the driving cylinder faces downwards, the end part of the piston rod is connected with the middle part of the lower linkage plate, and one side of the driving cylinder is provided with a proximity switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121961333.2U CN215661423U (en) | 2021-08-20 | 2021-08-20 | Lifting type driving mold locking mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121961333.2U CN215661423U (en) | 2021-08-20 | 2021-08-20 | Lifting type driving mold locking mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215661423U true CN215661423U (en) | 2022-01-28 |
Family
ID=79954082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121961333.2U Active CN215661423U (en) | 2021-08-20 | 2021-08-20 | Lifting type driving mold locking mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215661423U (en) |
-
2021
- 2021-08-20 CN CN202121961333.2U patent/CN215661423U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2014047756A1 (en) | Hydraulic chain riveting machine | |
| CN215661423U (en) | Lifting type driving mold locking mechanism | |
| CN202592799U (en) | Multi-station moving die changing mechanism of hydraulic machine | |
| CN113752461A (en) | Lifting type driving mold locking mechanism and mold locking method thereof | |
| CN211277378U (en) | High-speed railway wrist arm front end apparatus for producing | |
| CN202963282U (en) | Automatic loading and unloading mechanical hand for stamping | |
| CN106736393A (en) | The cutting agency of brake pump gland feeder | |
| CN201317082Y (en) | Mold replacing trolley positioning mechanism | |
| CN215661311U (en) | Foam forming machine with moving die, moving die and stable and reliable locking | |
| CN215704421U (en) | Quick die change mechanism of press | |
| CN220837616U (en) | Perforating mechanism for panel production | |
| CN113752435A (en) | Foam forming machine with stable and reliable moving and locking of moving die | |
| CN113664910B (en) | Wide-width adjustable punching device | |
| CN106734240B (en) | Modularization sideslip slider | |
| CN101284407B (en) | Tape stripping off device for vulcanizing press | |
| CN217252213U (en) | Universal die change frame | |
| CN216831882U (en) | Engineering plastic plate compression molding device | |
| CN201154535Y (en) | Adhesive tape peeling device for vulcanizing press | |
| CN2887592Y (en) | Slider of powder forming machine | |
| CN219546037U (en) | Butt clamp mechanism applied to roller machine and capable of achieving conveying in-place automatic alignment | |
| CN212822481U (en) | Novel hydraulic pushing device | |
| CN216183613U (en) | Full-automatic screen printing machine | |
| CN208853525U (en) | A kind of c-type mold | |
| CN220464556U (en) | Guiding mechanism of injection mold die carrier | |
| CN220784571U (en) | Dust cover top die mechanism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |