CN223265807U - A trimming machine for TPU film processing - Google Patents
A trimming machine for TPU film processingInfo
- Publication number
- CN223265807U CN223265807U CN202422649999.4U CN202422649999U CN223265807U CN 223265807 U CN223265807 U CN 223265807U CN 202422649999 U CN202422649999 U CN 202422649999U CN 223265807 U CN223265807 U CN 223265807U
- Authority
- CN
- China
- Prior art keywords
- tpu film
- rotating roller
- wall
- frame
- belt
- 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
Landscapes
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
The utility model discloses an edge cutter for TPU film processing, which relates to the field of TPU film processing and comprises an edge cutter base, wherein a film discharging frame is fixedly arranged at the back of the edge cutter base, a TPU film body is sleeved on the outer wall of the film discharging frame, a material guiding frame is fixedly connected to the inner wall of the film discharging frame at the back of the edge cutter base, three material guiding rollers are arranged on the inner wall of the material guiding frame, and two supporting frames are fixedly arranged at the top of the back of the edge cutter base. Through having set up lower conveyer belt and last conveyer belt, can carry out automatic conveying blowing to the TPU film, and set up the protection tooth, can prevent its slip or skew in the transportation of TPU film body, still played the effect that the protection film surface was not scratched or worn and torn to set up pneumatic cylinder body and compression roller, can carry out fixed cutting to the TPU film, set up the screw rod simultaneously, can carry out the accurate regulation to the height of compression roller, with the TPU film of adaptation different thickness.
Description
Technical Field
The utility model relates to the technical field of TPU film processing, in particular to an edge cutter for TPU film processing.
Background
TPU film processing refers to the process of forming a TPU (thermoplastic polyurethane) material into a film-like product through a series of specific process steps. Has excellent wear resistance, elasticity and chemical resistance, and thus is widely used in various fields, and trimming is required in the process of processing the TPU film, so that a trimming machine can be used;
When the conventional edge cutter is used, the TPU film is manually moved and fed, the manual feeding is difficult to meet the requirement of high precision due to the limitation of manual operation, errors and deviations exist in the feeding process, the quality and consistency of edge cutting are affected, and the labor cost is increased.
In order to overcome the defects, the prior art (China patent with application number of 202022238554.9 and application day of 2020.10.10) discloses a trimming device for processing TPU films, wherein the trimming device is respectively provided with a discharging roller and a winding roller on two sides of a machine table, so that the TPU films are conveyed and discharged.
Although the prior art can solve the problem of conveying and discharging TPU film, the trimming blade is arranged between the discharging roller and the winding roller, because the TPU film is softer, the TPU film is difficult to continuously link with the winding roller after trimming, thus the subsequent trimming is interrupted, the effect of conveying and discharging is poor, the TPU film cannot be prevented from sliding or shifting in the conveying process, the surface of the film is easily worn, the film cannot be fixed in the process of trimming, the film is easily shifted or wrinkled, and the trimming effect and efficiency are reduced.
Therefore, we propose an edge trimmer for TPU film processing, which can well solve the problems.
Disclosure of utility model
The utility model aims to provide an edge cutter for TPU film processing, which solves the problems that when the edge cutter for TPU film processing in the current market is used, a trimming blade is arranged between a discharging roller and a winding roller, and the TPU film is hard to continuously link with the winding roller after trimming is completed because the TPU film is softer, so that the subsequent trimming is interrupted, the effect of conveying and discharging is poor, sliding or shifting cannot be prevented in the conveying process, abrasion is easily caused on the surface of the film, and the film cannot be fixed in the trimming process, so that the film is easy to shift or wrinkle, and the effect and efficiency of trimming are reduced.
The trimming machine for TPU film processing comprises a trimming machine base, wherein a film discharging frame is fixedly arranged at the back of the trimming machine base, a TPU film body is sleeved on the outer wall of the film discharging frame, a material guiding frame is fixedly connected to the inner wall of the film discharging frame at the back of the trimming machine base, three material guiding rollers are arranged on the inner wall of the material guiding frame, and two supporting frames are fixedly arranged at the top of the back of the trimming machine base;
The automatic transmission device comprises a support frame, a servo motor body, a first rotating roller, a second rotating roller, a lower conveying belt, a first belt, a second belt, a first belt and a second belt, wherein the servo motor body is arranged on the left side of the back of the support frame, the output shaft of the servo motor body is fixedly provided with the first rotating roller through a coupler, the tail end of the first rotating roller penetrates through the support frame, the outer wall of the right side of the first rotating roller is sleeved with the first belt, the inner wall of the back of the first belt penetrates through the second rotating roller, and the outer walls of the second rotating roller and the first rotating roller are sleeved with the lower conveying belt;
The top of bead cutter base is located the support frame openly and is provided with two conveying rollers, the positive top fixed mounting of bead cutter base has the mount, the top of mount is provided with two pneumatic cylinder bodies, the output fixed mounting of pneumatic cylinder body has the removal frame, the interior roof of removal frame is provided with cutting blade.
As a preferable technical scheme of the application, a first gear is sleeved on the outer wall on the right side of the second rotating roller, a second gear is arranged at the top of the first gear, a third rotating roller is arranged in the second gear, the tail end of the third rotating roller penetrates through the supporting frame, a second belt is sleeved on the outer wall on the right side of the third rotating roller, a fourth rotating roller penetrates through the inner wall behind the second belt, and an upper conveying belt is sleeved on the outer walls of the third rotating roller and the fourth rotating roller.
According to the technical scheme, the upper conveyor belt and the lower conveyor belt are arranged in parallel, the outer walls of the upper conveyor belt and the lower conveyor belt are provided with a plurality of protection teeth which are made of rubber, and the protection teeth made of the rubber are arranged on the upper conveyor belt and the lower conveyor belt, so that the grabbing force of the TPU film body is improved, the TPU film body is prevented from sliding or shifting in the conveying process, and the effect of protecting the surface of the film from being scratched or worn is also achieved.
According to the technical scheme, a fixed plate is fixedly arranged at the back of two sides of the movable frame, a groove is formed in the fixed plate, sliding grooves are formed in the inner walls of the groove at the front side and the back side of the fixed plate, a rotary motor body is arranged at the top of the fixed plate at the right side of the movable frame, a screw is fixedly arranged on an output shaft of the rotary motor body through a coupler, the tail end of the screw penetrates through the fixed plate, a thread bush is sleeved on the outer wall of the screw, sliding plates penetrate through the front side and the back side of the thread bush, sliding grooves penetrate through the tail end of the sliding plates, a compression roller is arranged at the left side of the thread bush, and a limit groove is formed in the position of the top of the edge cutter base below the fixed plate.
As the preferable technical scheme of the application, the thread sleeves are fixedly arranged on the two sides of the press roller, the guide rod penetrates through the inside of the thread sleeve on the left side of the press roller, and the thread sleeve connected on the left side is driven to move on the guide rod in the moving process of the press roller, so that the moving stability and guiding effect of the press roller are improved.
According to the technical scheme, the first gear and the second gear are in meshed connection, the second gear and the third rotating roller are in fixed connection, and the first gear and the second gear are driven to be meshed to rotate in the rotating process of the first rotating roller, so that the second gear drives the third rotating roller to rotate.
According to the technical scheme, the threaded sleeve is in movable connection with the screw rod and the groove, the threaded sleeve is tightly attached to the sliding plate, the sliding plate is in sliding connection with the sliding groove, the sliding plate is driven to slide in the corresponding sliding groove in the moving process of the threaded sleeve, and the moving stability of the threaded sleeve is improved.
Compared with the prior art, the utility model has the beneficial effects that:
This bead cutter is used in TPU film processing, through having set up lower conveyer belt and last conveyer belt, can carry out automatic conveying blowing to the TPU film, and set up the protection tooth, can prevent its slip or skew in the transportation of TPU film body, still played the effect that the protection film surface was not scratched or worn and torn, and set up pneumatic cylinder body and compression roller, can fix the cutting to the TPU film, set up the screw rod simultaneously, can carry out the accurate regulation to the height of compression roller, in order to adapt to the TPU film of different thickness, concrete content is as follows:
1. The lower conveyor belt and the upper conveyor belt are arranged, and the servo motor body, the first rotating roller, the first belt, the second rotating roller, the lower conveyor belt, the first gear, the second gear, the third rotating roller, the second belt, the fourth rotating roller and the upper conveyor belt are mutually matched, so that the TPU film can be automatically conveyed and discharged conveniently;
furthermore, the protective teeth are arranged, and the protective teeth made of a plurality of rubbers are arranged on the lower conveyor belt and the upper conveyor belt, so that the holding power of the TPU film body is increased, the TPU film body is prevented from sliding or shifting in the conveying process, and the effect of protecting the surface of the film from being scratched or worn is also achieved;
2. The hydraulic cylinder bodies are arranged, and the two hydraulic cylinder bodies, the movable frame and the cutting blade are mutually matched, so that the TPU film is subjected to edge cutting;
Further, the press roll is arranged, the trimming TPU film is fixed through the mutual matching of the movable frame, the two fixing plates and the press roll, the cutting accuracy and stability are ensured, and the TPU film is prevented from being deviated or wrinkled in the cutting process;
Still further, set up the screw rod, through rotating motor body, screw rod, thread bush, recess, slide, spout, compression roller and guide arm mutually support to highly the accurate regulation to the compression roller, with the TPU film of adaptation different thickness, guaranteed TPU film side cut course of working's flexibility and high efficiency.
Drawings
FIG. 1 is a schematic diagram of the main structure of the present utility model;
FIG. 2 is a schematic view of a partial structure of a film discharging frame, a material guiding frame, a conveying roller and a supporting frame;
FIG. 3 is a schematic view of the partial structure of the lower and upper conveyors of the present utility model;
FIG. 4 shows a holder according to the present utility model a partial structural schematic;
FIG. 5 is a schematic cross-sectional view of a fixing plate according to the present utility model;
FIG. 6 shows a press roll according to the utility model a partial structural schematic;
Fig. 7 is an enlarged schematic view of the structure of fig. 2 a according to the present utility model.
In the figure, 1, a base of the edge cutter; 2, a film discharging frame, 3, a material guiding frame, 4, a conveying roller, 5, a fixed plate, 6, a supporting frame, 7, a servo motor body, 8, a first rotating roller, 9, a first belt, 10, a second rotating roller, 11, a lower conveying belt, 12, a first gear, 13, a second gear, 14, a third rotating roller, 15, an upper conveying belt, 16, a protective tooth, 17, a groove, 18, a guide rod, 19, a fixed frame, 20, a hydraulic cylinder body, 21, a moving frame, 22, a rotating motor body, 23, a screw, 24, a thread bush, 25, a press roller, 26 and a sliding plate.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-7, the present utility model provides the following technical solutions:
In order to solve the problems that when an edge cutter for TPU film processing in the market is used, but an edge cutter blade is arranged between a discharging roller and a winding roller, because the TPU film is softer, the TPU film is difficult to continuously connect with the winding roller after edge cutting is finished, so that the subsequent edge cutting is interrupted, the effect of conveying and discharging is poor, the edge cutter cannot prevent sliding or shifting in the conveying process, and the abrasion to the surface of the film is easy to occur, the edge cutter can refer to figures 1-3 and 7, and comprises an edge cutter base 1, a film discharging frame 2 is fixedly arranged at the rear of the edge cutter base 1, a TPU film body is sleeved on the outer wall of the film discharging frame 2, a guide frame 3 is fixedly connected to the rear of the edge cutter base 1, three guide rollers are arranged on the inner wall of the guide frame 3, and two supporting frames 6 are fixedly arranged at the top of the rear of the edge cutter base 1; the device also comprises a servo motor body 7 arranged on the left side behind the support frame 6, a first rotating roller 8 fixedly arranged on an output shaft of the servo motor body 7 through a coupler, a first belt 9 sleeved on the outer wall of the right side of the first rotating roller 8, a second rotating roller 10 sleeved on the inner wall behind the first belt 9, a lower conveying belt 11 sleeved on the outer wall of the second rotating roller 10 and the outer wall of the first rotating roller 8, a first gear 12 sleeved on the outer wall of the right side of the second rotating roller 10, a second gear 13 arranged on the top of the first gear 12, a third rotating roller 14 arranged inside the second gear 13, a second belt sleeved on the outer wall of the right side of the third rotating roller 14, and a fourth rotating roller sleeved on the inner wall behind the second belt, the outer walls of the third rotating roller 14 and the fourth rotating roller are sleeved with an upper conveying belt 15. The upper conveyor belt 15 and the lower conveyor belt 11 are arranged in parallel, a plurality of protection teeth 16 are arranged on the outer walls of the upper conveyor belt 15 and the lower conveyor belt 11, and the protection teeth 16 are made of rubber. The first gear 12 is meshed with the second gear 13, and the second gear 13 is fixedly connected with the third rotating roller 14.
The TPU film body one end of installing film blowing frame 2 is pulled through the staff, make TPU film body one end pass through three guide rolls on the guide frame 3, then TPU film gets into under conveyer belt 11, go up between conveyer belt 15 and two conveyer rolls 4, then behind the cutting blade that roller 25 and movable frame 21 below set up, start servo motor body 7 through external control panel, make the output shaft of servo motor body 7 drive first conveyer belt 8 and rotate, thereby first conveyer belt 8 drives the second rotor roll 10 that first belt 9 connects and carries out synchronous rotation, make first conveyer belt 8 and second rotor roll 10 drive conveyer belt 11 move down, drive first gear 12 and second gear 13 in the pivoted in-process of first conveyer belt 8 and carry out the meshing rotation, make second gear 13 drive third rotor roll 14 rotate, thereby third rotor roll 14 drives the fourth rotor roll that the second belt is connected, make third rotor roll 14 and fourth rotor roll drive conveyer belt 15 move, thereby conveyer belt 11 and last conveyer belt 15 move similarly, thereby the conveyer belt 11 is convenient for move down, carry out the conveyer belt 11 and carry out the motion to the conveyer belt 15 on the film carrier, the film is cut and is carried out the film roll 16 to the side cut and is carried out to the film roll on the film carrier is cut to the film carrier 21, the film is cut to the side cut and is not carried out to the side cut in the film carrier film is cut to the film carrier's of the side cut to the film is set up to the side cut.
In the second embodiment, the TPU film can be fixed and cut, referring to fig. 1-2 and fig. 4-6, two conveying rollers 4 are arranged on the top of the edge cutter base 1, which is positioned on the front of the supporting frame 6, a fixing frame 19 is fixedly arranged on the top of the front of the edge cutter base 1, two hydraulic cylinder bodies 20 are arranged on the top of the fixing frame 19, a movable frame 21 is fixedly arranged at the output end of the hydraulic cylinder bodies 20, and a cutting blade is arranged on the inner top wall of the movable frame 21. The back fixed mounting who removes frame 21 both sides has fixed plate 5, recess 17 has been seted up to the inside of fixed plate 5, and the spout has been seted up to both sides in recess 17 inner wall around fixed plate 5, the top of moving frame 21 right side fixed plate 5 is provided with rotates motor body 22, the output shaft of rotating motor body 22 has screw rod 23 through shaft coupling fixed mounting, and the screw rod 23 end runs through fixed plate 5, screw rod 23's outer wall cover is equipped with thread bush 24, both sides run through around thread bush 24 have slide 26, and slide 26 end runs through the spout, the left side of thread bush 24 is provided with compression roller 25, the top of bead cutter base 1 is provided with the spacing groove in the below of fixed plate 5. Screw thread sleeves 24 are fixedly arranged on two sides of the press roller 25, and guide rods 18 penetrate through the interiors of the screw thread sleeves 24 on the left side of the press roller 25. The threaded sleeve 24 is movably connected with the screw 23 and the groove 17, the threaded sleeve 24 is tightly attached to the sliding plate 26, and the sliding plate 26 is slidably connected with the sliding groove.
When trimming is required through moving and conveying the TPU film to a proper length, an external control panel starts two hydraulic cylinder bodies 20, so that the output end of each hydraulic cylinder body 20 simultaneously drives a movable frame 21 to move downwards, the movable frame 21 drives a cutting blade to trim the TPU film below, and in the process that the movable frame 21 drives the cutting blade to move downwards, the movable frame 21 drives a press roller 25 arranged on the inner walls of the two fixed plates 5 to move downwards, so that the press roller 25 presses the TPU film, the trimmed TPU film is fixed, the cutting accuracy and stability are ensured, and the TPU film is prevented from shifting or wrinkling in the cutting process;
The staff starts to rotate the motor body 22 through external control panel according to the thickness of TPU film, make the output that rotates the motor body 22 drive screw rod 23 and rotate, thereby screw rod 23 drives thread bush 24 and carries out vertical movement in recess 17, drive slide 26 in corresponding spout at the in-process that thread bush 24 removed and slide, increase the stability that thread bush 24 removed, thereby thread bush 24 drives compression roller 25 and removes, drive the thread bush 24 that the left side is connected on guide arm 18 at the in-process that compression roller 25 removed and remove, increase the stability and the guide effect that compression roller 25 removed, thereby carry out accurate regulation to compression roller 25's height, in order to adapt to the TPU film of different thickness, the flexibility and the high efficiency of TPU film side cut course of working have been guaranteed.
What is not described in detail in this specification is prior art known to those skilled in the art.
Although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described above, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present utility model.
Claims (7)
1. The utility model provides a TPU film processing edge cutter, includes edge cutter base (1), film blowing frame (2) are fixed mounting at the back of edge cutter base (1), and the outer wall cover of film blowing frame (2) is equipped with TPU film body, be located film blowing frame (2) inner wall fixedly connected with guide frame (3) at the back of edge cutter base (1), the inner wall of guide frame (3) is provided with three guide rolls, two support frames (6) are fixed mounting at the top at the back of edge cutter base (1);
The automatic transmission device is characterized by further comprising a servo motor body (7) arranged on the left side of the back of the support frame (6), wherein a first rotating roller (8) is fixedly arranged on an output shaft of the servo motor body (7) through a coupler, the tail end of the first rotating roller (8) penetrates through the support frame (6), a first belt (9) is sleeved on the outer wall of the right side of the first rotating roller (8), a second rotating roller (10) penetrates through the inner wall of the back of the first belt (9), and a lower conveying belt (11) is sleeved on the second rotating roller (10) and the outer wall of the first rotating roller (8);
the automatic edge trimmer is characterized in that two conveying rollers (4) are arranged on the front face of the supporting frame (6) at the top of the edge trimmer base (1), a fixing frame (19) is fixedly arranged on the front top of the edge trimmer base (1), two hydraulic cylinder bodies (20) are arranged on the top of the fixing frame (19), a movable frame (21) is fixedly arranged at the output end of each hydraulic cylinder body (20), and a cutting blade is arranged on the inner top wall of each movable frame (21).
2. The edge trimmer for TPU film processing according to claim 1, wherein the outer wall on the right side of the second rotating roller (10) is sleeved with a first gear (12), the top of the first gear (12) is provided with a second gear (13), the inside of the second gear (13) is provided with a third rotating roller (14), the tail end of the third rotating roller (14) penetrates through the supporting frame (6), the outer wall on the right side of the third rotating roller (14) is sleeved with a second belt, the inner wall behind the second belt penetrates through a fourth rotating roller, and the outer walls of the third rotating roller (14) and the fourth rotating roller are sleeved with an upper conveying belt (15).
3. The edge trimmer for TPU film processing according to claim 2 is characterized in that the upper conveyor belt (15) and the lower conveyor belt (11) are arranged in parallel, a plurality of protection teeth (16) are arranged on the outer walls of the upper conveyor belt (15) and the lower conveyor belt (11), and the protection teeth (16) are made of rubber.
4. The edge trimmer for TPU film processing of claim 1 is characterized in that a fixed plate (5) is fixedly arranged at the back of two sides of the movable frame (21), a groove (17) is formed in the fixed plate (5), sliding grooves are formed in the inner walls of the groove (17) on the front side and the back side of the fixed plate (5), a rotating motor body (22) is arranged at the top of the fixed plate (5) on the right side of the movable frame (21), a screw rod (23) is fixedly arranged on an output shaft of the rotating motor body (22) through a coupler, the tail end of the screw rod (23) penetrates through the fixed plate (5), a thread bush (24) is sleeved on the outer wall of the screw rod (23), a sliding plate (26) penetrates through the front side and the back side of the thread bush (24), a sliding groove is formed in the tail end of the sliding plate (26), a pressing roller (25) is arranged on the left side of the thread bush (24), and a limit groove is formed in the position of the top of the base (1) of the edge trimmer under the fixed plate (5).
5. The edge trimmer for TPU film processing according to claim 4, wherein screw sleeves (24) are fixedly arranged on two sides of the press roller (25), and guide rods (18) penetrate through the left screw sleeve (24) of the press roller (25).
6. The edge trimmer for TPU film processing according to claim 2, wherein the first gear (12) is meshed with the second gear (13), and the second gear (13) is fixedly connected with the third rotating roller (14).
7. The edge trimmer for TPU film processing as set forth in claim 4, wherein the threaded sleeve (24) is movably connected with the screw (23) and the groove (17), the threaded sleeve (24) is tightly attached with the sliding plate (26), and the sliding plate (26) is slidably connected with the sliding groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202422649999.4U CN223265807U (en) | 2024-10-31 | 2024-10-31 | A trimming machine for TPU film processing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202422649999.4U CN223265807U (en) | 2024-10-31 | 2024-10-31 | A trimming machine for TPU film processing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN223265807U true CN223265807U (en) | 2025-08-26 |
Family
ID=96805526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202422649999.4U Active CN223265807U (en) | 2024-10-31 | 2024-10-31 | A trimming machine for TPU film processing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN223265807U (en) |
-
2024
- 2024-10-31 CN CN202422649999.4U patent/CN223265807U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113928648A (en) | Adhesive tape sealing equipment for packaging box | |
| CN214298556U (en) | Edge cutting device for processing TPU (thermoplastic polyurethane) film | |
| CN212065649U (en) | Novel automatic cut and wear integrative threading machine assembly line | |
| CN223265807U (en) | A trimming machine for TPU film processing | |
| CN212796175U (en) | Film laminating device for color printing package | |
| CN203173591U (en) | Label cutting machine | |
| CN215710488U (en) | Adjustable material guide equipment of laser marking machine | |
| CN205272153U (en) | Automatic cotton machine that cuts of drum -type | |
| CN219054527U (en) | Cutting machine is used in sticky tape processing | |
| CN213798363U (en) | Bag making machine with driving roller | |
| CN115847758B (en) | High performance PVC floor processing is with roll-in former | |
| CN218799514U (en) | Feeding device of plate shearing machine | |
| CN218776751U (en) | Cutting device for backpack cotton sliver | |
| CN118047102A (en) | Full-automatic transparent film three-dimensional packagine machine | |
| CN103224162A (en) | Label cutting machine | |
| CN111531600B (en) | Production process of polyethylene rubber blended waterproof coiled material | |
| CN221364995U (en) | Elastic band feeding device | |
| CN221167191U (en) | Practical cloth cutting device for clothing production | |
| CN211306500U (en) | Rubber cutting equipment | |
| CN222987095U (en) | Double-deck feed arrangement and unloading all-in-one in rubber | |
| CN222987093U (en) | Automatic feeding device for rubber slitter | |
| CN223777737U (en) | An anti-sticking slicing mechanism for an extruder | |
| CN221436609U (en) | Positioning device for cutting decoration printed matter | |
| CN220182282U (en) | Vertical slitting machine with automatic feeding function | |
| CN220481788U (en) | Rice straw cutter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |