CN209940024U - Automatic coil stock exchanging device - Google Patents
Automatic coil stock exchanging device Download PDFInfo
- Publication number
- CN209940024U CN209940024U CN201920526178.8U CN201920526178U CN209940024U CN 209940024 U CN209940024 U CN 209940024U CN 201920526178 U CN201920526178 U CN 201920526178U CN 209940024 U CN209940024 U CN 209940024U
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- cutting
- rotating
- rotary
- pressing
- bearing
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- 238000005520 cutting process Methods 0.000 claims abstract description 68
- 239000000463 material Substances 0.000 claims abstract description 54
- 238000003825 pressing Methods 0.000 claims abstract description 53
- 230000001360 synchronised effect Effects 0.000 claims description 18
- 238000007789 sealing Methods 0.000 claims description 6
- 239000002390 adhesive tape Substances 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 2
- 230000001939 inductive effect Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 8
- KLARSDUHONHPRF-UHFFFAOYSA-N [Li].[Mn] Chemical compound [Li].[Mn] KLARSDUHONHPRF-UHFFFAOYSA-N 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000004804 winding Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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Abstract
The utility model relates to the technical field of battery manufacturing, in particular to an automatic coil exchanging device for coil stock, which comprises a machine table, a left unwinding device, a right unwinding device and a rotary cutting device; the machine table is provided with a left auxiliary roller, a right auxiliary roller and a plurality of fixed rollers; the rotary cutting device comprises a bearing seat, a bearing arranged on the bearing seat, a rotary body arranged on the bearing, a rotary mechanism for driving the rotary body to rotate on the bearing seat, a rotary mechanism for driving the bearing seat to rotate and a driving mechanism; the rotating body comprises an upper part and a lower part; a gap for materials to pass through is arranged between the upper part and the lower part; the rotating body is provided with a pressing mechanism for pressing the material and a cutting mechanism for cutting off the material. The utility model discloses a set up rotatory main part, rotary mechanism, slewing mechanism, actuating mechanism, hold-down mechanism and cutting mechanism and realize that the material of left unwinding device and right unwinding device takes automatic exchange.
Description
Technical Field
The utility model relates to a battery preparation technical field, concretely relates to coil stock automatic exchange book device.
Background
Domestic lithium-manganese battery manufacturers always realize manual operation in the process of the full-automatic lithium-manganese battery winding machine, under the increasingly dramatic market demands, the efficiency is about one minute when the lithium-manganese battery is wound by manual operation with great hands, the development of enterprises is greatly hindered, and the automation of the winding realization becomes the urgent demand of the enterprises.
In the unreeling process of the material roll of the automatic reeling machine, after the material of one material roll is unreeled, the machine needs to be stopped for the continuity of the material, and then the residual material of the material roll is manually cut off and is pasted on a new material roll, so that the working efficiency is low.
Disclosure of Invention
The utility model aims at the above-mentioned among the prior art not enough, provide a coil stock automatic switching rolling device, do not need manual the getting ready, realize full-automatic splicing.
The purpose of the utility model is realized through the following technical scheme: an automatic coil exchanging device for coil materials comprises a machine table, a left unwinding device, a right unwinding device and a rotary cutting device, wherein the left unwinding device, the right unwinding device and the rotary cutting device are all arranged on the machine table; the rotary cutting device is arranged between the left unwinding device and the right unwinding device;
the machine table is provided with a left auxiliary roller, a right auxiliary roller and a plurality of fixed rollers; the left auxiliary roller is used for moving up and down between the left unreeling device and the rotary cutting device; the right auxiliary roller is used for moving up and down between the right unreeling device and the rotary cutting device;
the rotary cutting device comprises a bearing seat, a bearing arranged on the bearing seat, a rotary body arranged on the bearing, a rotary mechanism for driving the rotary body to rotate on the bearing seat, a rotary mechanism for driving the bearing seat to rotate and a driving mechanism for driving the bearing seat to move back and forth on the machine platform;
the rotating body comprises an upper part and a lower part; a gap for materials to pass through is arranged between the upper part and the lower part; the rotating body is provided with a pressing mechanism for pressing the material and a cutting mechanism for cutting off the material.
The utility model is further arranged in that the compressing mechanism comprises a compressing pressing block arranged in the gap, a first air cavity arranged at the upper part and a compressing piston arranged at the upper part; one end of the pressing piston is used for abutting against the pressing block; the other end of the pressing piston is arranged in the first air cavity; the rotating main body is provided with a first air path communicated with the first air cavity; the pressing mechanism further comprises a first resetting piece for resetting the pressing block;
the first reset piece is a first tension spring; one end of the first tension spring is connected with the pressing block; the other end of the first tension spring is connected with the rotating main body;
and a sealing ring is arranged between the first air path and the rotating main body.
The utility model is further arranged in that the cutting mechanism comprises a cutter arranged in the gap, a cutting pressing block connected with the cutter, a second air cavity arranged at the upper part and a cutting piston arranged at the upper part; one end of the cutting piston is used for abutting against the cutting pressing block; the other end of the cutting piston is arranged in the second air cavity; the rotating main body is provided with a second air path communicated with the second air cavity; the cutting mechanism further comprises a second resetting piece for resetting the cutter;
the second resetting piece is a second tension spring; one end of the second tension spring is connected with the cutting pressing block; the other end of the second tension spring is connected with the rotating main body;
and a sealing ring is arranged between the second air path and the rotating main body.
The utility model is further arranged in that the rotating mechanism comprises a rotating motor, a first synchronous wheel, a synchronous belt and a second synchronous wheel; the output end of the rotating motor is connected with the first synchronous wheel; the first synchronous wheel is linked with the second synchronous wheel through a synchronous belt; the second synchronizing wheel is in coaxial transmission with the rotating body.
The utility model is further arranged in that the rotating mechanism comprises a connecting rod, a motor base and a rotating motor arranged on the motor base; one end of the connecting rod is connected with the rotating motor; the other end of the connecting rod is connected with the rotating body; the driving mechanism is an air cylinder; the output end of the air cylinder is connected with the motor base; the bottom of the motor base is provided with a sliding block; the machine table is provided with a slide rail which is connected with the slide block in a sliding way.
The utility model discloses further set up to, left side unwinding device and right side unwinding device all are equipped with the inductor that is used for responding to the double faced adhesive tape.
The utility model is further provided with that the fixed roll comprises a fixed roll, a left fixed roll and a right fixed roll; the fixed roller is arranged between the left fixed roller and the right fixed roller.
The utility model has the advantages that: the utility model discloses a set up rotatory main part, rotary mechanism, slewing mechanism, actuating mechanism, hold-down mechanism and cutting mechanism and realize that the material of left unwinding device and right unwinding device takes automatic exchange.
Drawings
The invention is further described with the aid of the accompanying drawings, in which, however, the embodiments do not constitute any limitation to the invention, and for a person skilled in the art, other drawings can be derived from the following drawings without inventive effort.
FIG. 1 is a schematic view of the structure of a roll of the present invention;
fig. 2 is a top view of the present invention;
FIG. 3 is a schematic structural view of the rotary cutting apparatus of the present invention;
FIG. 4 is a side view of the rotary cutoff of the present invention;
fig. 5 is a front view of the rotating body of the present invention;
figure 6 is a cross-sectional view of the side of the rotating body of the present invention;
fig. 7 is a schematic diagram of the right unwinding device of the present invention during unwinding;
fig. 8 is a schematic diagram of the right unwinding device of the present invention after unwinding;
fig. 9 is a schematic diagram of the right unwinding device of the present invention during cutting;
fig. 10 is a schematic diagram of the right unwinding device after being cut;
fig. 11 is a schematic diagram of the left unwinding device of the present invention when being attached;
fig. 12 is a schematic diagram of the right unwinding device of the present invention after being attached;
fig. 13 is a schematic diagram of the reset of the rotating body of the present invention;
FIG. 14 is a schematic diagram of the present invention after the roll change is completed;
the reference numerals in fig. 1 to 14 illustrate:
1-a bearing seat; 11-a bearing; 12-a first gas path; 13-a second gas path; 2-a rotating body; 21-upper part; 22-lower part; 23-a gap; 31-pressing the pressing block; 32-a first air cavity; 33-a hold-down piston; 34-a first restoring member; 41-a cutter; 42-cutting and briquetting; 43-a second air cavity; 44-a cutting piston; 45-a second restoring member; 51-a rotating electrical machine; 52-first synchronizing wheel; 53-synchronous belt; 54-a second synchronizing wheel; 61-a connecting rod; 62-a rotating motor; 63-a motor seat; 64-a cylinder; 7-sealing ring; 8-a machine platform; 81-left unwinding device; 82-right unwinding device; 83-rotary cutting means; 84-left auxiliary roller; 85-right auxiliary roller; 86-fixed roller; 87-left fixed roll; 88-right fixed roll; 91-material roll head part; 92-the tail of the coil; 93-double sided tape.
Detailed Description
The invention will be further described with reference to the following examples.
As can be seen from fig. 1 to 14; the automatic coil exchanging device for coil materials in this embodiment includes a machine table 8, and a left unwinding device 81, a right unwinding device 82, and a rotary cutting device 83, which are all disposed on the machine table 8; the rotary cutting device 83 is arranged between the left unwinding device 81 and the right unwinding device 82;
a left auxiliary roller 84, a right auxiliary roller 85 and a plurality of fixed rollers are arranged on the machine table 8; the left auxiliary roller 84 is used for moving up and down between the left unreeling device 81 and the rotary cutting device 83; the right auxiliary roller 85 is used for moving up and down between the right unreeling device 82 and the rotary cutting device 83; the fixed roller of the roller plays a role in guiding materials,
the rotary cutting device 83 comprises a bearing 11 seat, a bearing 11 arranged on the bearing 11 seat, a rotary body 2 arranged on the bearing 11, a rotary mechanism for driving the rotary body 2 to rotate on the bearing 11 seat, a rotary mechanism for driving the bearing 11 seat to rotate and a driving mechanism for driving the bearing 11 seat to move back and forth on the machine table 8;
the rotating body 2 comprises an upper portion 21 and a lower portion 22; a gap 23 for passing materials is arranged between the upper part 21 and the lower part 22; the rotating body 2 is provided with a pressing mechanism for pressing the material and a cutting mechanism for cutting the material.
Specifically, before the material roll is placed in the left unwinding device 81 or the right unwinding device 82, as shown in fig. 1, a through hole is formed in the material roll head 91, and a double-sided tape 93 is attached to the through hole (this step is completed when the last process is finished), and then the material roll is placed in the left unwinding device 81 or the right unwinding device 82 for unwinding;
when the material of the left unwinding device 81 or the right unwinding device 82 is used up, the driving mechanism drives the bearing 11 base to move to the position parallel to the material roll, and after the rotating mechanism drives the bearing 11 base to perform angular deflection towards the left unwinding device 81 or the right unwinding device 82, the rotating mechanism drives the rotating body 2 to rotate on the bearing 11 base by a certain angle so that the material plate or sheet enters the gap 23 between the upper portion 21 and the lower portion 22; then the pressing mechanism works to press the material, and the cutting mechanism works to cut off the material plate or sheet, so that the automatic cutting of the material plate or sheet is realized;
after the cutting is completed, the rotating mechanism drives the bearing 11 seat to deflect towards another unreeling device, and then the rotating mechanism drives the rotating main body 2 to rotate on the bearing 11 seat for a certain angle, so that the cut materials in the gap 23 are attached to the double-sided adhesive tape 93 of a new material roll, and the automatic material roll exchange is completed.
In the automatic coil exchanging device for coil stock in this embodiment, the pressing mechanism includes a pressing block 31 disposed in the gap 23, a first air cavity 32 disposed in the upper portion 21, and a pressing piston 33 disposed in the upper portion 21; one end of the pressing piston 33 is used for abutting against the pressing block 31; the other end of the pressing piston 33 is arranged in the first air cavity 32; the rotating main body 2 is provided with a first air path 12 communicated with a first air cavity 32; the pressing mechanism further comprises a first resetting piece 34 for resetting the pressing block 31; specifically, when the material enters the gap 23 between the upper portion 21 and the lower portion 22, the gas is introduced into the first gas passage 12, and the gas enters the first gas chamber 32 through the first gas passage 12, so that the pressing piston 33 is pushed to move downward, and the pressing block 31 is moved toward the lower portion 22, so that the pressing block 31 presses the material.
The first reset piece 34 is a first tension spring; one end of the first tension spring is connected with the pressing block 31; the other end of the first tension spring is connected with the rotating main body 2; when the tape replacement is completed, the gas supply to the first gas passage 12 is stopped, and the first tension spring resets the pressing block 31 and the pressing piston 33.
A seal ring 7 is provided between the first air passage 12 and the rotary body 2. The provision of the seal ring 7 prevents the gas from being exposed from the first gas passage 12 and the rotary body 2.
In the automatic coil-exchanging device for coil stock of this embodiment, the cutting mechanism includes a cutter 41 disposed in the gap 23, a cutting press block 42 connected to the cutter 41, a second air cavity 43 disposed in the upper portion 21, and a cutting piston 44 disposed in the upper portion 21; one end of the cutting piston 44 is used for abutting against the cutting pressing block 42; the other end of the cutting piston 44 is arranged in the second air cavity 43; the rotating main body 2 is provided with a second air path 13 communicated with the second air cavity 43; the cutting mechanism further comprises a second resetting member 45 for resetting the cutter 41; specifically, after the pressing mechanism presses the material, the second air path 13 is filled with air, and the air enters the second air cavity 43 through the second air path 13, so as to push the cutting piston 44 to move downwards, so that the cutting press block 42 and the cutter 41 move towards the lower portion 22, and the cutter 41 cuts off the material.
The second reset piece 45 is a second tension spring; one end of the second tension spring is connected with the cutting pressing block 42; the other end of the second tension spring is connected with the rotating main body 2; when the cutting is completed, the gas is stopped from flowing into the second gas path 13, and the second tension spring resets the cutting press block 42 and the cutting piston 44.
And a sealing ring 7 is arranged between the second air passage 13 and the rotating main body 2. By providing the seal ring 7, the gas can be prevented from being exposed from the second gas passage 13 and the rotary body 2.
In the automatic coil-exchanging device for coil stock according to this embodiment, the rotating mechanism includes a rotating motor 51, a first synchronizing wheel 52, a synchronizing belt 53 and a second synchronizing wheel 54; the output end of the rotating motor 51 is connected with a first synchronous wheel 52; the first synchronous wheel 52 and the second synchronous wheel 54 are linked through a synchronous belt 53; the second synchronizing wheel 54 is coaxially driven with the rotating body 2. Specifically, when the rotation of the rotating body 2 is required, the rotating motor 51 is operated, thereby rotating the rotating body 2 by the first timing wheel 52, the timing belt 53, and the second timing wheel 54.
In the automatic coil exchanging device for coil stock according to this embodiment, the rotating mechanism includes a connecting rod 61, a motor base 63, and a rotating motor 62 disposed on the motor base 63; one end of the connecting rod 61 is connected with a rotating motor 62; the other end of the connecting rod 61 is connected with the rotating body 2; specifically, when the rotating body 2 needs to be deflected toward the left unwinding device 81 or the right unwinding device 82, the rotating motor 62 rotates by a certain angle, so as to drive the connecting rod 61 and the rotating body 2 to adjust the angle. The driving mechanism is a cylinder 64; the output end of the air cylinder 64 is connected with the motor base 63; a sliding block is arranged at the bottom of the motor base 63; the machine table 8 is provided with a slide rail which is connected with the slide block in a sliding way.
In the automatic roll exchanging device for the roll material according to this embodiment, the fixed rollers include a fixed roller 86, a left fixed roller 87 and a right fixed roller 88; the fixed roller 86 is provided between the left fixed roller 87 and the right fixed roller 88. The arrangement is convenient for guiding and positioning the material.
In the automatic coil exchanging device for coil stock according to this embodiment, the left unwinding device 81 and the right unwinding device 82 are both provided with sensors for sensing the double-sided adhesive tape 93.
Specifically, for further understanding of the working principle, the right unwinding device 82 exchanges the material belt to the left unwinding device 81 as an example:
as shown in fig. 7, at this time, the right material roll on the right unwinding device 82 is in an unwinding state, and the right auxiliary roller 85 is in a lower position, so as to play a role in guiding and positioning the right material roll; as shown in fig. 8, when the right roll is about to be used up, the left unwinding device 81 rotates until the sensor senses the position of the double-sided tape 93; then, as shown in fig. 9, after the rotating mechanism drives the bearing 11 seat to perform angular deflection towards the right unwinding device 82, the rotating mechanism drives the rotating body 2 to rotate on the bearing 11 seat by a certain angle so that the material enters into the gap 23 between the upper portion 21 and the lower portion 22; then the pressing mechanism works to press the tail part 92 of the material roll, and the cutting mechanism works to cut off the tail part 92 of the material roll, so that the automatic cutting of the material plate or sheet is realized; as shown in FIG. 10, the hold-down mechanism is operative to hold down the tail 92 of the roll; as shown in fig. 11, the rotating mechanism drives the bearing 11 seat to perform angular deflection towards the left unwinding device 81; as shown in fig. 12, the rotating mechanism drives the rotating body 2 to rotate on the bearing 11 seat by a certain angle, so that the tail part 92 of the material roll is attached to the double-sided adhesive tape 93 of the roll head part 91 of the left roll; as shown in fig. 13, after the attachment is completed, the rotating mechanism is reset; as shown in fig. 14, the left auxiliary roller 84 moves downward, the pressing material serves as a wire positioning, and then the rotating mechanism drives the rotating body 2 to rotate on the bearing 11 seat for a certain angle and the pressing mechanism stops working, so that the material roll is pushed out from the gap 23, thereby completing the exchange of the material tape.
It should be finally noted that the above embodiments are only intended to illustrate the technical solutions of the present invention, and not to limit the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention.
Claims (7)
1. The utility model provides a coil stock automatic switching book device which characterized in that: comprises a machine table (8), and a left unreeling device (81), a right unreeling device (82) and a rotary cutting device (83) which are all arranged on the machine table (8); the rotary cutting device (83) is arranged between the left unwinding device (81) and the right unwinding device (82);
the machine table (8) is provided with a left auxiliary roller (84), a right auxiliary roller (85) and a plurality of fixed rollers; the left auxiliary roller (84) is used for moving up and down between the left unreeling device (81) and the rotary cutting device (83); the right auxiliary roller (85) is used for moving up and down between the right unreeling device (82) and the rotary cutting device (83);
the rotary cutting device (83) comprises a bearing (11) seat, a bearing (11) arranged on the bearing (11) seat, a rotary body (2) arranged on the bearing (11), a rotary mechanism for driving the rotary body (2) to rotate on the bearing (11) seat, a rotary mechanism for driving the bearing (11) seat to rotate and a driving mechanism for driving the bearing (11) seat to move back and forth on the machine table (8);
the rotating body (2) comprises an upper part (21) and a lower part (22); a gap (23) for passing through materials is arranged between the upper part (21) and the lower part (22); the rotating body (2) is provided with a pressing mechanism for pressing the material and a cutting mechanism for cutting off the material.
2. The automatic coil exchanging device according to claim 1, wherein: the pressing mechanism comprises a pressing block (31) arranged in the gap (23), a first air cavity (32) arranged on the upper part (21) and a pressing piston (33) arranged on the upper part (21); one end of the pressing piston (33) is used for abutting against the pressing block (31); the other end of the pressing piston (33) is arranged in the first air cavity (32); the rotating main body (2) is provided with a first air path (12) communicated with the first air cavity (32); the pressing mechanism further comprises a first resetting piece (34) for resetting the pressing block (31);
the first resetting piece (34) is a first tension spring; one end of the first tension spring is connected with the pressing block (31); the other end of the first tension spring is connected with the rotating main body (2);
and a sealing ring (7) is arranged between the first air path (12) and the rotating body (2).
3. The automatic coil exchanging device according to claim 1, wherein: the cutting mechanism comprises a cutter (41) arranged in the gap (23), a cutting pressing block (42) connected with the cutter (41), a second air cavity (43) arranged on the upper part (21) and a cutting piston (44) arranged on the upper part (21); one end of the cutting piston (44) is used for abutting against the cutting pressing block (42); the other end of the cutting piston (44) is arranged in the second air cavity (43); the rotating main body (2) is provided with a second air path (13) communicated with the second air cavity (43); the cutting mechanism further comprises a second resetting piece (45) for resetting the cutting knife (41);
the second resetting piece (45) is a second tension spring; one end of the second tension spring is connected with the cutting pressing block (42); the other end of the second tension spring is connected with the rotating main body (2);
and a sealing ring (7) is arranged between the second air path (13) and the rotating main body (2).
4. The automatic coil exchanging device according to claim 1, wherein: the rotating mechanism comprises a rotating motor (51), a first synchronous wheel (52), a synchronous belt (53) and a second synchronous wheel (54); the output end of the rotating motor (51) is connected with a first synchronous wheel (52); the first synchronous wheel (52) is linked with the second synchronous wheel (54) through a synchronous belt (53); the second synchronizing wheel (54) is in coaxial transmission with the rotating body (2).
5. The automatic coil exchanging device according to claim 1, wherein: the rotating mechanism comprises a connecting rod (61), a motor base (63) and a rotating motor (62) arranged on the motor base (63); one end of the connecting rod (61) is connected with a rotating motor (62); the other end of the connecting rod (61) is connected with the rotating main body (2); the driving mechanism is an air cylinder (64); the output end of the air cylinder (64) is connected with the motor base (63); a sliding block is arranged at the bottom of the motor base (63); the machine table (8) is provided with a slide rail which is connected with the slide block in a sliding way.
6. The automatic coil exchanging device according to claim 1, wherein: and the left unwinding device (81) and the right unwinding device (82) are respectively provided with an inductor for inducing a double-faced adhesive tape (93).
7. The automatic coil exchanging device according to claim 1, wherein: the fixed rollers comprise a fixed roller (86), a left fixed roller (87) and a right fixed roller (88); the fixed roller (86) is arranged between the left fixed roller (87) and the right fixed roller (88).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920526178.8U CN209940024U (en) | 2019-04-17 | 2019-04-17 | Automatic coil stock exchanging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920526178.8U CN209940024U (en) | 2019-04-17 | 2019-04-17 | Automatic coil stock exchanging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209940024U true CN209940024U (en) | 2020-01-14 |
Family
ID=69128585
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920526178.8U Withdrawn - After Issue CN209940024U (en) | 2019-04-17 | 2019-04-17 | Automatic coil stock exchanging device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209940024U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110002259A (en) * | 2019-04-17 | 2019-07-12 | 东莞市雅康精密机械有限公司 | A kind of coiled strip exchanges winding apparatus automatically |
| CN111453494A (en) * | 2020-04-09 | 2020-07-28 | 安庆市恒昌机械制造有限责任公司 | Raw material switching device and feeding device |
-
2019
- 2019-04-17 CN CN201920526178.8U patent/CN209940024U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110002259A (en) * | 2019-04-17 | 2019-07-12 | 东莞市雅康精密机械有限公司 | A kind of coiled strip exchanges winding apparatus automatically |
| WO2020211560A1 (en) * | 2019-04-17 | 2020-10-22 | 东莞市雅康精密机械有限公司 | Automatic coiled material switching device |
| CN110002259B (en) * | 2019-04-17 | 2024-04-12 | 东莞市雅康精密机械有限公司 | Automatic coil stock exchange device |
| CN111453494A (en) * | 2020-04-09 | 2020-07-28 | 安庆市恒昌机械制造有限责任公司 | Raw material switching device and feeding device |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20200114 Effective date of abandoning: 20240412 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20200114 Effective date of abandoning: 20240412 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |