CN111186064A - Synchronous belt forming equipment - Google Patents
Synchronous belt forming equipment Download PDFInfo
- Publication number
- CN111186064A CN111186064A CN202010241858.2A CN202010241858A CN111186064A CN 111186064 A CN111186064 A CN 111186064A CN 202010241858 A CN202010241858 A CN 202010241858A CN 111186064 A CN111186064 A CN 111186064A
- Authority
- CN
- China
- Prior art keywords
- steel wire
- spindle box
- base plate
- servo motor
- steel
- 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.)
- Pending
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/22—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length
- B29C43/28—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length incorporating preformed parts or layers, e.g. compression moulding around inserts or for coating articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/44—Compression means for making articles of indefinite length
- B29C43/48—Endless belts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/58—Measuring, controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/44—Compression means for making articles of indefinite length
- B29C43/48—Endless belts
- B29C2043/486—Endless belts cooperating with rollers or drums
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
Abstract
The invention discloses synchronous belt forming equipment which comprises a rack (1), a steel wire winding mechanism (2), a steel wire output mechanism (3) and a steel belt extrusion forming mechanism (4), wherein a linear guide rail (5) is arranged on the rack (1), and the steel wire winding device (2), the steel wire output mechanism (3) and the steel belt extrusion forming mechanism (4) are sequentially arranged on the linear guide rail (5); the steel wire winding mechanism (2) comprises a first base plate (201), a second base plate (202), a reversing wheel mounting plate (203), a first main shaft box base (204), a first main shaft box (205), a first servo motor (206), a steel wire cylinder (207) and a counterweight mechanism (208) for tightening a steel wire. The invention adopts synchronous belt forming equipment, and has high production efficiency, good running stability and high yield.
Description
Technical Field
The invention relates to the technical field of numerical control machine tools, in particular to synchronous belt forming equipment.
Background
The present synchronous belt uses steel wire rope as strong force layer, and is covered with polyurethane or chloroprene rubber ring belt, and integrates the advantages of belt transmission, chain transmission and synchronous belt transmission, and when it is rotated, it utilizes the toothed belt and toothed groove of wheel to make engagement to transfer power, so that its transmission ratio is accurate, counter shaft action force is small, structure is compact, and the synchronous belt is oil-resistant, wear-resisting, and ageing-resisting, and can obtain constant speed ratio, transmission is stable, noise for absorbing vibration is small, transmission ratio range is large, and it can be extensively used in various transmission machines. In the production process of the synchronous belt, the synchronous belt is generally manufactured by a synchronous belt forming machine, and the production process comprises the processes of arranging wires, applying compression glue and the like.
In the prior art, the synchronous belt forming machine has the defects of low production efficiency, poor stability, occupied space and the like. Therefore, it is necessary for those skilled in the art to develop a new type of synchronous belt forming equipment.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides synchronous belt forming equipment with high production efficiency and good running stability.
In order to achieve the above purpose, the technical scheme provided by the invention is as follows: a synchronous belt forming device comprises a rack, a steel wire winding mechanism, a steel wire output mechanism and a steel belt extrusion forming mechanism, wherein a linear guide rail is arranged on the rack, and the steel wire winding device, the steel wire output mechanism and the steel belt extrusion forming mechanism are sequentially arranged on the linear guide rail;
the steel wire winding mechanism comprises a first bottom plate, a second bottom plate, a reversing wheel mounting plate, a first main shaft box base, a first main shaft box, a first servo motor, a steel wire cylinder and a counterweight mechanism for tightening the steel wire, wherein the counterweight mechanism comprises a supporting vertical plate, a reversing pulley, a first feed rod assembly and a counterweight block, a lead screw guide rail is arranged on the first bottom plate, the second bottom plate is arranged on the lead screw guide rail so as to enable the second bottom plate to move linearly, the reversing wheel mounting plate, the second feed rod assembly and the first main shaft box base are arranged on the second bottom plate, a slidable support is adapted and assembled on the second feed rod assembly, a reel for tightening the steel wire is arranged on the support, a first main shaft box is arranged on the first main shaft box base, one end of the first main shaft box is adapted and connected with the first servo motor, and the other end of the first main shaft box is adapted and connected with the steel, the reversing wheel mounting plate is provided with a guide wheel group for steering a steel wire, one side end of the second bottom plate is provided with a counterweight mechanism for balancing the tension of the steel wire, the reversing pulley is arranged at the upper part of the supporting vertical plate, the first light bar component is arranged at the lower part of the supporting vertical plate, the first light bar component is matched and assembled with a slidable counterweight block, and the support is connected with the counterweight block through a traction rope and the reversing pulley;
the steel wire output system comprises a driving wheel, a driven wheel, a third main shaft box base, a third servo motor, a first planetary reducer, a fourth main shaft box base, a fourth servo motor, a second planetary reducer and a synchronous belt die, the third spindle box base and the fourth spindle box base are both arranged on the linear guide rail, the third spindle box is arranged on the third spindle box base, one end of the third main spindle box is connected with a first planetary reducer, one end of the first planetary reducer is connected with a third servo motor, the fourth spindle box is arranged on a fourth spindle box base, one end of the fourth spindle box is connected with a second planetary reducer, one end of the second planetary reducer is connected with a fourth servo motor, the synchronous belt die is mounted on the driving wheel, and flange plates are further arranged at two ends of the driving wheel;
the steel band extrusion molding device comprises a molding device support, a molding roller group, a steel band, a third bottom plate, a fourth bottom plate and a screw rod mechanism, wherein the molding roller group is arranged on the molding device support and comprises at least three rollers, one end of each roller is connected with a fifth spindle box in an adaptive mode, the steel band is coated on the molding roller group, the fifth spindle box is arranged on the third bottom plate, the fourth bottom plate is arranged on the bottom side of the third bottom plate and is in transmission connection with the third bottom plate through the screw rod mechanism, and the fourth bottom plate is arranged on the linear guide rail.
Preferably, a first limit switch and a second limit switch are respectively arranged at two ends of the second optical lever assembly, the first limit switch and the second limit switch are both electrically connected with the first servo motor, and the first limit switch and the second limit switch are both used for detecting the position of the support so as to control the rotating speed of the first servo motor.
Preferably, the number of the rollers is three, and a connecting line of center points of the three rollers is a triangle.
Based on the technical scheme, compared with the prior art, the invention has the following technical advantages:
the invention adopts synchronous belt forming equipment, has reasonable structural design, high production efficiency and high yield; the steel wire can be tightened by using the counterweight mechanism, so that the constant tightening force of the steel wire is ensured; set up first limit switch and second limit switch respectively at second polished rod subassembly both ends, first limit switch and second limit switch all with a servo motor electric connection, thereby first servo motor rotational speed is controlled to first limit switch and second limit switch position that can detect the support, ensures that equipment operating stability is good.
Drawings
Fig. 1 is a schematic structural view of a synchronous belt molding apparatus of the present invention.
Fig. 2 is a schematic structural view of the wire winding mechanism of the present invention.
In the figure: 1. a frame, 2, a steel wire winding mechanism, 201, a first base plate, 202, a second base plate, 203, a reversing wheel mounting plate, 204, a first main spindle box base, 205, a first main spindle box, 206, a first servo motor, 207, a steel wire cylinder, 208, a counterweight mechanism, 209, a supporting vertical plate, 210, a reversing pulley, 211, a first light bar component, 212, a counterweight block, 213, a lead screw guide rail component, 214, a reversing wheel mounting plate, 215, a second light bar component, 216, a second main spindle box base, 217, a support, 218, a reel, 219, a guide wheel set, 220, a first limit switch, 221, a second limit switch, 3, a steel wire output mechanism, 301, a driving wheel, 302, a driven wheel, 303, a third main spindle box, 304, a third main spindle box base, a third servo motor, 306, a first planetary reducer, 307, a fourth main spindle box, 308, a fourth main spindle box base, 309, a fourth servo motor, 310. the steel belt forming device comprises a second planetary reducer, 311 synchronous belt dies, 312 flange plates, 4 steel belt extrusion forming mechanisms, 401 former supports, 402 forming roller sets, 403 steel belts, 404 third bottom plates, 405 fourth bottom plates, 406 lead screw mechanisms, 407 rollers, 408 fifth spindle boxes and 5 linear guide rails.
Detailed Description
The invention is further explained below with reference to the figures and examples.
As shown in fig. 1-2, a synchronous belt forming apparatus comprises a frame 1, a steel wire winding mechanism 2, a steel wire output mechanism 3 and a steel belt extrusion forming mechanism 4, wherein a linear guide rail 5 is arranged on the frame 1, and the steel wire winding device 2, the steel wire output mechanism 3 and the steel belt extrusion forming mechanism 4 are sequentially arranged on the linear guide rail 5;
the steel wire winding mechanism 2 comprises a first bottom plate 201, a second bottom plate 202, a reversing wheel mounting plate 203, a first main shaft box base 204, a first main shaft box 205, a first servo motor 206, a steel wire cylinder 207 and a counterweight mechanism 208 for tightening a steel wire, wherein the counterweight mechanism 208 comprises a supporting vertical plate 209, a reversing pulley 210, a first polish rod assembly 211 and a counterweight 212, a lead screw guide rail member 213 is arranged on the first bottom plate 201, the second bottom plate 202 is arranged on the lead screw guide rail member 213 so that the second bottom plate can move along a straight line, the reversing wheel mounting plate 203, a second polish rod assembly 214 and the first main shaft box base 204 are arranged on the second bottom plate 202, a slidable support 215 is assembled on the second polish rod assembly 214 in an adaptive manner, a winding wheel 216 for tightening the steel wire is arranged on the support 215, the first main shaft box base 204 is provided with the first main shaft box 205, one end of the first main shaft box 205 is in adaptive connection with the first servo motor 206, the other end of the first spindle box 205 is in adaptive connection with a steel wire cylinder 207, a guide wheel set 217 for steel wire steering is arranged on the reversing wheel mounting plate 203, a counterweight mechanism 208 for balancing tension of the steel wire is arranged at one side end of the second base plate 202, the reversing pulley 210 is arranged at the upper part of a supporting vertical plate 209, the first feed rod assembly 211 is arranged at the lower part of the supporting vertical plate 209, a slidable counterweight 212 is in adaptive assembly on the first feed rod assembly 211, and the support 215 is connected with the counterweight 212 through the reversing pulley 210 by a traction rope;
the steel wire output system 3 comprises a driving wheel 301, a driven wheel 302, a third spindle box 303, a third spindle box base 304, a third servo motor 305, a first planetary reducer 306, a fourth spindle box 307, a fourth spindle box base 308, a fourth servo motor 309, a second planetary reducer 310 and a synchronous belt mold 311, wherein the third spindle box base 304 and the fourth spindle box base 308 are both arranged on a linear guide rail 5, the third spindle box 303 is arranged on the third spindle box base 304, one end of the third spindle box 303 is connected with the first planetary reducer 306, one end of the first planetary reducer 306 is connected with the third servo motor 305, the fourth spindle box 307 is arranged on the fourth spindle box base 308, one end of the fourth spindle box 307 is connected with the second planetary reducer 310, one end of the second planetary reducer 310 is connected with the fourth servo motor 309, and the synchronous belt mold 311 is arranged on the driving wheel 301, flanges 312 are arranged at the two ends of the driving wheel 301;
the steel strip extrusion molding device 4 comprises a molding device support 401, a molding roller set 402, a steel strip 403, a third bottom plate 404, a fourth bottom plate 405 and a screw rod mechanism 406, the molding roller set 402 is arranged on the molding device support 401, the molding roller set 402 comprises at least three rollers 407, one end of each roller 407 is connected with a fifth spindle box 408 in an adaptive mode, the steel strip 403 is wrapped on the molding roller set 402, the fifth spindle box 408 is arranged on the third bottom plate 404, the fourth bottom plate 405 is arranged on the bottom side of the third bottom plate 404, the third bottom plate 404 is in transmission connection with the fourth bottom plate 405 through the screw rod mechanism 406, and the fourth bottom plate 405 is arranged on the linear guide 5.
A first limit switch 218 and a second limit switch 219 are respectively disposed at two ends of the second optical lever assembly 214, the first limit switch 218 and the second limit switch 219 are both electrically connected to the first servo motor 206, and the first limit switch 218 and the second limit switch 219 are both used for detecting the position of the support 215 so as to control the rotation speed of the first servo motor 206. The number of the rollers 407 is three, and a connecting line of the center points of the three rollers 407 is a triangle.
The implementation process of the invention is as follows:
the steel wire is drawn from a steel wire cylinder 207, one end of the steel wire is wound on a winding wheel 216 and turns to the steel wire through a guide wheel set 217, the steel wire is further paved in a synchronous belt die 311 on a driving wheel 301 through a driven wheel 302, a polyurethane extrusion nozzle is positioned on one side of a steel belt 403, when the synchronous belt forming equipment works, polyurethane material of the polyurethane extrusion nozzle falls in the synchronous belt die 311 and is fused with the steel wire, the polyurethane material and the steel wire enter a forming roller set 402 together, the polyurethane material and the steel wire in the synchronous belt die 311 are pressed through the steel belt 403 to be formed, and a synchronous belt is obtained.
The foregoing is illustrative and explanatory of the invention and is not intended to limit the advantages attainable thereby, and it is within the scope of the present application for any one or more of the advantages to be realized, whether simple changes in construction and/or implementation in some embodiments are possible in the practice of the invention.
Claims (3)
1. The utility model provides a hold-in range former which characterized in that: the steel wire winding machine comprises a rack (1), a steel wire winding mechanism (2), a steel wire output mechanism (3) and a steel belt extrusion forming mechanism (4), wherein a linear guide rail (5) is arranged on the rack (1), and the steel wire winding device (2), the steel wire output mechanism (3) and the steel belt extrusion forming mechanism (4) are sequentially arranged on the linear guide rail (5);
the steel wire winding mechanism (2) comprises a first base plate (201), a second base plate (202), a reversing wheel mounting plate (203), a first main shaft box base (204), a first main shaft box (205), a first servo motor (206), a steel wire cylinder (207) and a counterweight mechanism (208) for tightening a steel wire, wherein the counterweight mechanism (208) comprises a supporting vertical plate (209), a reversing pulley (210), a first feed rod assembly (211) and a counterweight block (212), a lead screw guide rail part (213) is arranged on the first base plate (201), the second base plate (202) is arranged on the lead screw guide rail part (213) to enable the second base plate to move along a straight line, the reversing wheel mounting plate (203), the second feed rod assembly (214) and the first main shaft box base (204) are arranged on the second base plate (202), and a slidable support (215) is matched and assembled on the second feed rod assembly (214), a reel (216) for tightening steel wires is arranged on the support (215), a first main spindle box (205) is arranged on the first main spindle box base (204), one end of the first main spindle box (205) is connected with a first servo motor (206) in a matching way, the other end of the first main spindle box (205) is in adaptive connection with a steel wire cylinder (207), a guide wheel set (217) for steering steel wires is arranged on the reversing wheel mounting plate (203), one side end of the second bottom plate (202) is provided with a counterweight mechanism (208) for balancing the tension of the steel wire, the reversing pulley (210) is arranged at the upper part of a supporting vertical plate (209), the first optical lever component (211) is arranged at the lower part of the supporting vertical plate (209), and the first light bar component (211) is matched and assembled with a sliding balancing weight (212), the support (215) is connected with a balancing weight (212) through a traction rope via a reversing pulley (210);
the steel wire output system (3) comprises a driving wheel (301), a driven wheel (302), a third spindle box (303), a third spindle box base (304), a third servo motor (305), a first planetary speed reducer (306), a fourth spindle box (307), a fourth spindle box base (308), a fourth servo motor (309), a second planetary speed reducer (310) and a synchronous belt mold (311), wherein the third spindle box base (304) and the fourth spindle box base (308) are both arranged on a linear guide rail (5), the third spindle box (303) is arranged on the third spindle box base (304), one end of the third spindle box (303) is connected with the first planetary speed reducer (306), one end of the first planetary speed reducer (306) is connected with the third servo motor (305), and the fourth spindle box (307) is arranged on the fourth spindle box base (308), one end of the fourth spindle box (307) is connected with a second planetary reducer (310), one end of the second planetary reducer (310) is connected with a fourth servo motor (309), the synchronous belt die (311) is mounted on the driving wheel (301), and two ends of the driving wheel (301) are further provided with flange plates (312);
the steel strip extrusion molding device (4) comprises a molding device support (401), a molding roller group (402), a steel strip (403), a third base plate (404), a fourth base plate (405) and a screw rod mechanism (406), wherein the molding roller group (402) is arranged on the molding device support (401), the molding roller group (402) comprises at least three rollers (407), one end of each roller (407) is connected with a fifth spindle box (408) in an adaptive mode, the steel strip (403) is wrapped on the molding roller group (402), the fifth spindle box (408) is arranged on the third base plate (404), the fourth base plate (405) is arranged on the bottom side of the third base plate (404), the third base plate (404) is in transmission connection with the fourth base plate (405) through the screw rod mechanism (406), and the fourth base plate (405) is arranged on a linear guide rail (5).
2. The synchronous belt molding apparatus as claimed in claim 1, wherein: the two ends of the second light bar component (214) are respectively provided with a first limit switch (218) and a second limit switch (219), the first limit switch (218) and the second limit switch (219) are electrically connected with the first servo motor (206), and the first limit switch (218) and the second limit switch (219) are used for detecting the position of the support (215) so as to control the rotating speed of the first servo motor (206).
3. The synchronous belt molding apparatus as claimed in claim 1, wherein: the number of the rollers (407) is three, and the connecting line of the central points of the three rollers (407) is triangular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010241858.2A CN111186064A (en) | 2020-03-31 | 2020-03-31 | Synchronous belt forming equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010241858.2A CN111186064A (en) | 2020-03-31 | 2020-03-31 | Synchronous belt forming equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111186064A true CN111186064A (en) | 2020-05-22 |
Family
ID=70703078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010241858.2A Pending CN111186064A (en) | 2020-03-31 | 2020-03-31 | Synchronous belt forming equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111186064A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112454954A (en) * | 2020-12-11 | 2021-03-09 | 奥力孚传动科技股份有限公司 | Small-diameter synchronous belt manufacturing device formed by thermoplastic polyurethane and manufacturing method thereof |
-
2020
- 2020-03-31 CN CN202010241858.2A patent/CN111186064A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112454954A (en) * | 2020-12-11 | 2021-03-09 | 奥力孚传动科技股份有限公司 | Small-diameter synchronous belt manufacturing device formed by thermoplastic polyurethane and manufacturing method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2594225Y (en) | Automatic metal wire winder | |
| CN101950632B (en) | Method and device for manufacturing special-shaped wire material | |
| CN219882906U (en) | Novel combined rope sawing machine for cutting stone plates | |
| CN111186064A (en) | Synchronous belt forming equipment | |
| CN101898222A (en) | Small multi-strand spring numerical control machine tool | |
| CN204159672U (en) | A kind of spooling equipment of water tank type wire drawing machine | |
| CN212021421U (en) | Synchronous belt forming equipment | |
| CN213950204U (en) | High-precision wire arranging device for winding machine | |
| CN212024351U (en) | Steel wire winding mechanism for forming synchronous belt | |
| CN103337359B (en) | High-power transformer coil manufactures the pneumatic conducting wire tensioning device of walking | |
| CN1673059A (en) | Wire arranging machine | |
| CN216613535U (en) | Coil separating device for raw material coil of galvanized steel stranded wire of cable | |
| CN215210202U (en) | Cradle type stranding machine | |
| CN108486702B (en) | Coiling device for capacity expansion of drawing frame barrel | |
| CN1585053A (en) | Circular iron-core foil winding apparatus and method thereof | |
| CN114590625A (en) | Multi-station unreeling machine base | |
| CN113005799A (en) | Cradle type stranding machine | |
| CN220351356U (en) | Copper braided wire tensioning and conveying device | |
| CN220375968U (en) | Wire arrangement device with uniform wire winding | |
| CN205769283U (en) | Flat car reciprocating movement driving device | |
| CN217102474U (en) | Tension-free loose-winding type optical fiber unit take-up device | |
| CN205811816U (en) | Stator multi cord coil winding machine | |
| CN218538744U (en) | Auxiliary caterpillar tractor for production of high-voltage wires of electric automobile | |
| CN220664483U (en) | Cable winding device for cable production | |
| CN218708055U (en) | Coiling machine is used in optic fibre production |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |