CN112223602B - Mould mobile device for mould manufacturing - Google Patents
Mould mobile device for mould manufacturing Download PDFInfo
- Publication number
- CN112223602B CN112223602B CN202010924174.2A CN202010924174A CN112223602B CN 112223602 B CN112223602 B CN 112223602B CN 202010924174 A CN202010924174 A CN 202010924174A CN 112223602 B CN112223602 B CN 112223602B
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- seat
- pair
- sliding
- boosting
- mold
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 21
- 230000007246 mechanism Effects 0.000 claims abstract description 24
- 230000006835 compression Effects 0.000 claims description 11
- 238000007906 compression Methods 0.000 claims description 11
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 239000004809 Teflon Substances 0.000 claims description 3
- 229920006362 Teflon® Polymers 0.000 claims description 3
- 239000003973 paint Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 4
- 230000003139 buffering effect Effects 0.000 description 9
- 230000009471 action Effects 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
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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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/34—Moulds or cores; Details thereof or accessories therefor movable, e.g. to or from the moulding station
Abstract
The invention discloses a mould moving device for manufacturing moulds, which comprises a placing seat and a jacking mechanism, wherein the jacking mechanism comprises a movable seat and a fork frame, reset spring, a pair of boosting seat and a pair of cylinder, the sliding seat activity sets up in placing the riser on the seat, the bottom of sliding seat is provided with a pair of first slide rail, it is provided with first slider to slide on the first slide rail, the crotch sets up in erecting the downthehole, the crotch includes a pair of middle part pin joint fork arm together, the upper end pin joint of fork arm is on the first slider that corresponds, the lower extreme pin joint of fork arm has one to go up the sloping block, the bottom in erecting the hole sets firmly corresponds sliding fit's lower sloping block with last sloping block, reset spring sets up between the inboard of a pair of sloping block, a pair of boosting seat is the activity respectively and sets up in the side opening of erecting the hole both sides, the boosting pole of a pair of boosting seat supports respectively and leans on the lateral surface of the last sloping block that corresponds one side, the piston rod of a pair of cylinder is connected with the boosting seat that corresponds one side respectively. The invention has the advantage of stable and reliable work of the jacking mechanism.
Description
Technical Field
The invention relates to the technical field of mold movement, in particular to a mold moving device for mold manufacturing.
Background
The mold is a tool commonly used in industrial production, and the production development level of the mold is one of important marks of the mechanical manufacturing level. Movement of the mold is often required during the mold manufacturing process.
Published patent CN210552943U discloses a mould mobile device for mould manufacturing, including placing the seat, the mould has been placed to the upper end of placing the seat, two curb plates of symmetry are installed to one side of placing the seat, install a plurality of drive rollers between the curb plate, every the sprocket is all installed to a point of drive roller, every the meshing has the chain on the sprocket, driving motor is installed to one side of curb plate, driving motor's output shaft and one of them drive roller fixed connection, the jack-up mechanism is installed to the both sides of placing the seat. The utility model discloses a through jack-up mechanism with mould jack-up to support through the gyro wheel, make the resistance when the mould removes littleer, and need not to drive the base of mould and remove, reduce drive power, when mould production, can put down the gyro wheel simultaneously, guarantee the frictional force of mould and base, thereby guarantee the manufacturing stability of mould. However, in the actual production process, it is found that when the jacking mechanism works, the movable seat is easy to generate clamping stagnation due to deflection, so that the jacking mechanism fails, and the normal work of the mold moving device is influenced.
Disclosure of Invention
In view of the above, the present invention provides a mold moving device for manufacturing a mold to solve the above technical problems.
In order to achieve the purpose, the invention provides the following technical scheme: a mold moving device for mold manufacturing, comprising a placing seat and a jack-up mechanism, the jack-up mechanism comprising a movable seat, the jack-up mechanism further comprising: the fork frame comprises a pair of fork rods, the middle parts of the fork rods are pivoted together, so that the fork frame is in an X shape, the upper ends of the fork rods are pivoted on the corresponding first sliding blocks, the lower ends of the fork rods are pivoted with an upper inclined block, the inner side height of the lower inclined plane at the bottom of the upper inclined block is higher than the outer side height, the bottom of the vertical hole is fixedly provided with a lower inclined block which is in sliding fit with the upper inclined block correspondingly, the reset spring is arranged between the inner sides of the pair of upper inclined blocks, the pair of boosting seats are movably arranged in the side holes at two sides of the vertical hole respectively, and the boosting rods of the pair of boosting seats are respectively abutted against the outer side surfaces of the upper inclined blocks at one corresponding side, the pair of cylinders are fixedly arranged in the pair of side holes through cylinder fixing seats respectively, and piston rods of the pair of cylinders are connected with the boosting seats on the corresponding side respectively.
Furthermore, the sliding seat slides through the sliding module and is arranged in the vertical hole, a second sliding rail of the sliding module is fixedly arranged on the inner wall of the vertical hole, and a second sliding block of the sliding module is connected to the side wall of the sliding seat.
Furthermore, the bottom of the main body of the boosting seat is provided with a bottom wheel, and the bottom of the side hole is provided with a roller groove matched with the bottom wheel.
Furthermore, a buffer spring is arranged between the main body and the cylinder fixing seat on the corresponding side.
Further, go up the outside of sloping block and be provided with the side spout, a buffering head has set firmly on the tip of helping the push rod, the buffering head slides and sets up in the side spout, the buffering head includes the fixing base, removes seat, compression spring and elastic rubber cover, the tail end rigid coupling of fixing base is in help on the tip of push rod, it is in to remove seat swing joint on the fixing base, compression spring sets up the fixing base with remove between the seat, elastic rubber cover suit is in remove on the front end of seat.
Furthermore, the tail rod part of the movable seat is movably arranged in the counter bore on the fixed seat, a plurality of friction rings are embedded on the periphery of the tail rod part, and the peripheral surfaces of the friction rings abut against the inner peripheral surface of the counter bore.
Furthermore, a plurality of rubber columns are arranged at the front end of the fixed seat.
Furthermore, the outer side of the elastic rubber sleeve is sprayed with Teflon paint.
Furthermore, the jacking mechanism further comprises a guide rod, two ends of the guide rod are respectively arranged in guide holes in the upper inclined blocks on the corresponding side in a sliding mode, and the reset spring is sleeved on the guide rod.
Furthermore, the top of the lower sloping block is provided with a chute matched with the upper sloping block.
The technical scheme can show that the invention has the advantages that: the arrangement of the sliding module ensures the reliability and the fluency of the up-and-down movement of the movable seat, avoids the occurrence of clamping stagnation and ensures that the work of the jacking mechanism is more reliable; the arrangement of the pair of cylinders in the jacking mechanism avoids the problem of failure of the jacking mechanism caused by the fault of a single cylinder, so that the jacking mechanism is more reliable in work.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is an enlarged view at L in fig. 1.
Fig. 3 is an enlarged view of fig. 1 at M.
Fig. 4 is an enlarged view of fig. 1 at N.
List of reference numbers: the device comprises a placing seat 1, a vertical hole 11, a side hole 12, a roller groove 121, a movable seat 2, a roller 21, a first slider 22, a first slide rail 23, a sliding module 3, a second slide rail 31, a second slider 32, a fork frame 4, a fork rod 41, an upper inclined block 5, a lower inclined surface 51, a side sliding groove 52, a baffle plate 53, a pivoting seat 54, a guide hole 55, a lower inclined block 6, an inclined groove 61, a return spring 7, a guide rod 71, a boosting seat 8, a main body 81, a bottom wheel 82, a boosting rod 83, a buffering head 84, a fixed seat 841, a counter bore 8411, a pin hole 8412, a moving seat 842, a tail rod part 8421, a tail hole 8422, an annular groove 8423, a compression spring 843, an elastic rubber sleeve 844, a friction ring 845, a blocking pin 846, a rubber column 847, a guide rod 85, a buffering spring 86, a shaft sleeve 87, a cylinder 9, a cylinder fixed seat 91 and a mounting hole 92.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the following embodiments and accompanying drawings. The exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but not to limit the present invention.
Referring to fig. 1 to 4, a mold moving device for manufacturing a mold as shown in fig. 1 comprises a placing base 1 and a jacking mechanism, the jacking mechanism comprises a movable base 2, a fork frame 4, a return spring 7, a pair of boosting bases 8 and a pair of cylinders 9, the movable base 2 is slidably disposed in a vertical hole 11 of the placing base 1 through a pair of sliding modules 3, the pair of sliding modules 3 are symmetrically disposed on both sides of the movable base 2, second sliding rails 31 of the sliding modules 3 are vertically mounted on the inner wall of the vertical hole 11, second sliding blocks 32 of the sliding modules 3 are connected to the side walls of the movable base 2, so that the movable base 2 can move up and down smoothly, a plurality of rollers 21 are disposed on the top of the movable base 2, a pair of first sliding rails 23 are disposed on the bottom of the movable base 2, first sliding blocks 22 are slidably disposed on the first sliding rails 23, the fork frame 4 is disposed in the vertical hole 11, the fork frame 4 comprises a pair of fork rods 41 with middle portions pivoted together, the fork frame 4 is made to be in an X shape, the upper end of a fork rod 41 is pivoted on a corresponding first sliding block 22, the lower end of the fork rod 41 is pivoted with an upper inclined block 5, the inner side of a lower inclined surface 51 at the bottom of the upper inclined block 5 is higher than the outer side, the bottom of a vertical hole 11 is fixedly provided with a lower inclined block 6 which is in sliding fit with the upper inclined block 5, the outer side of the lower inclined block 6 extends towards a side hole 12 formed in the side wall of the vertical hole 11, a return spring 7 is arranged between the inner sides of a pair of upper inclined blocks 5, a pair of boosting seats 8 are respectively and movably arranged in the side holes 12 at two sides of the vertical hole 11, boosting rods 83 of the pair of boosting seats 8 respectively abut against the outer side surfaces of the upper inclined blocks 5 at corresponding sides, a pair of air cylinders 9 are respectively and fixedly arranged in the pair of side holes 12 through air cylinder fixing seats 91, and piston rods of the pair of air cylinders 9 are respectively connected with the boosting seats 8 at corresponding sides.
In this embodiment, in order to ensure the stability and reliability of the return spring 7 during operation, the jacking mechanism further includes a guide rod 71, two ends of the guide rod 71 are respectively slidably disposed in the guide holes 55 on the upper inclined block 5 on the corresponding side, and the return spring 7 is sleeved on the guide rod 71.
As shown in fig. 2, the lower end of the fork rod 41 is pivotally connected to the pivot seat 54 at the top of the upper inclined block 5, the top of the lower inclined block 6 is provided with an inclined groove 61 matched with the upper inclined block 5, the outer side of the upper inclined block 5 is provided with a side sliding groove 52, the end of the boosting rod 83 is fixedly provided with a buffer head 84, the buffer head 84 is slidably arranged in the side sliding groove 52, and the top of the side sliding groove 52 is provided with a baffle 53.
As shown in fig. 3, the buffer head 84 includes a fixing seat 841, a moving seat 842, a compression spring 843 and an elastic rubber sleeve 844, a tail end of the fixing seat 841 is fixedly connected to an end of the push rod 83, a tail rod portion 8421 of the moving seat 842 is movably disposed in a counter bore 8411 of the fixing seat 841, one end of the compression spring 843 abuts against an inner end wall of the counter bore 8411, and the other end of the compression spring 843 extends into a tail hole 8422 at a rear end of the tail rod portion 8421 and abuts against an inner end wall of the tail hole 8422, when the moving seat 842 is impacted, the compression spring 843 can play a role in buffering, reducing mechanical vibration and noise, the elastic rubber sleeve 844 is sleeved on a front end of the moving seat 842, and the elastic rubber sleeve 844 is made of elastic rubber, and can further play a role in buffering.
In this embodiment, in order to reduce the friction between the buffer head 84 and the side sliding slot 52 when the buffer head 84 moves in the side sliding slot 52, the outer side of the elastic rubber sleeve 844 is coated with teflon paint.
In this embodiment, in order to reduce the friction force between the tail rod portion 8421 of the moving seat 842 and the counter bore 8411, a plurality of annular grooves 8423 are arranged at intervals on the periphery of the tail rod portion 8421, a friction ring 845 is installed in each annular groove 8423, the outer peripheral surface of the friction ring 845 abuts against the inner peripheral surface of the counter bore 8411, in order to prevent the moving seat 842 from falling off from the counter bore 8411, a pin hole 8412 which is perpendicular to and communicated with the counter bore 8411 is arranged on the fixing seat 841, a blocking pin 846 is inserted into the pin hole 8412, and the inner end of the blocking pin 846 extends into the counter bore 8411 to abut against the friction ring 845.
In this embodiment, an opening is provided in the friction ring 845 for ease of installation.
In this embodiment, be provided with a plurality of rubber column 847 on the front end of fixing base 841, rubber column 847 passes through the fix with screw on fixing base 841, is compressed to when being close to the limit at compression spring 843, removes the rear end face on the outer edge of seat 842 and supports and press on rubber column 847, because rubber column 847 is made by elastic rubber, when receiving the compression, can play the effect of buffering, and then the cushioning effect of promotion buffer head 84 that can step forward.
As shown in fig. 4, in order to improve the accuracy and smoothness of the movement of the booster seat 8, the bottom of the main body 81 of the booster seat 8 is provided with a bottom wheel 82, and the bottom of the side hole 12 is provided with a roller groove 121 matched with the bottom wheel 82.
In this embodiment, a guide rod 85 is connected and disposed at the rear side of the boosting seat 8, a shaft sleeve 87 is installed in the installation hole 92 of the cylinder fixing seat 91, the guide rod 85 is slidably disposed in the shaft sleeve 87, a buffer spring 86 is sleeved on the guide rod 85, one end of the buffer spring 86 abuts against the main body 81, the other end of the buffer spring 86 abuts against the shaft sleeve 87, when the cylinder 9 orders the boosting seat 8 to return, the buffer spring 86 can play a role in buffering, vibration impact during the action of the jacking mechanism is reduced, and noise during the operation of the jacking mechanism is reduced.
As shown in fig. 1, when the mold needs to be ejected, the piston rods of a pair of cylinders 9 extend synchronously to push the corresponding push-aid seats 8 to move, and then the pair of push-aid seats 8 respectively push the corresponding upper inclined blocks 5, so that the pair of upper inclined blocks 5 are drawn close to each other, under the action of a pair of lower inclined blocks 6, the upper inclined blocks 5 drive the movable seat 2 to move upwards through the fork frame 4, meanwhile, the pair of upper inclined blocks 5 are drawn close to each other to drive the fork frame 4 to move, so that the movable seat 2 is further lifted upwards to eject the mold, at this time, the return spring 7 is compressed, when the mold needs to be put down, the piston rods of the pair of cylinders 9 synchronously retract and drive the corresponding push-aid seats 8 to move reversely, then under the action of the return spring 7, the pair of upper inclined blocks 5 are separated from each other, under the action of the pair of lower inclined blocks 6, the upper inclined blocks 5 drive the movable seat 2 to move downwards through the fork frame 4, meanwhile, the pair of upper inclined blocks 5 are far away from each other to drive the fork frame 4 to act, so that the movable seat 2 further descends and retracts into the vertical hole 11.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made to the embodiment of the present invention by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A mould mobile device of mould manufacturing usefulness, including placing seat (1) and jack-up mechanism, the jack-up mechanism includes sliding seat (2), its characterized in that, the jack-up mechanism still includes: the fork frame (4), a return spring (7), a pair of boosting seats (8) and a pair of cylinders (9), wherein the movable seat (2) is movably arranged in a vertical hole (11) on the placing seat (1), the bottom of the movable seat (2) is provided with a pair of first sliding rails (23), the first sliding rails (23) are provided with first sliding blocks (22) in a sliding manner, the fork frame (4) is arranged in the vertical hole (11), the fork frame (4) comprises a pair of fork rods (41) with the middle parts pivoted together, so that the fork frame (4) is in an X shape, the upper ends of the fork rods (41) are pivoted on the corresponding first sliding blocks (22), the lower ends of the fork rods (41) are pivoted with an upper inclined block (5), the inner height of a lower inclined plane (51) at the bottom of the upper inclined block (5) is higher than the outer height, and the bottom of the vertical hole (11) is fixedly provided with a lower inclined block (6) which is correspondingly matched with the upper inclined block (5) in a sliding manner, the reset spring (7) is arranged between the inner sides of the pair of upper inclined blocks (5), the pair of boosting seats (8) are respectively and movably arranged in the side holes (12) at two sides of the vertical hole (11), boosting rods (83) of the pair of boosting seats (8) are respectively abutted against the outer side surfaces of the upper inclined blocks (5) at the corresponding side, the pair of air cylinders (9) are respectively and fixedly arranged in the pair of side holes (12) through air cylinder fixing seats (91), and piston rods of the pair of air cylinders (9) are respectively connected with the boosting seats (8) at the corresponding side; the movable seat (2) is arranged in the vertical hole (11) in a sliding mode through a sliding module (3), a second sliding rail (31) of the sliding module (3) is fixedly arranged on the inner wall of the vertical hole (11), and a second sliding block (32) of the sliding module (3) is connected to the side wall of the movable seat (2); a side sliding groove (52) is formed in the outer side of the upper inclined block (5), a buffer head (84) is fixedly arranged at the end part of the push-aid rod (83), the buffer head (84) is arranged in the side sliding groove (52) in a sliding manner, the buffer head (84) comprises a fixed seat (841), a moving seat (842), a compression spring (843) and an elastic rubber sleeve (844), the tail end of the fixed seat (841) is fixedly connected to the end part of the push-aid rod (83), the moving seat (842) is movably connected to the fixed seat (841), the compression spring (843) is arranged between the fixed seat (841) and the moving seat (842), and the elastic rubber sleeve (844) is sleeved on the front end part of the moving seat (842); a tail rod part (8421) of the moving seat (842) is movably arranged in a counter bore (8411) in the fixed seat (841), a plurality of friction rings (845) are embedded on the periphery of the tail rod part (8421), and the peripheral surface of each friction ring (845) abuts against the inner peripheral surface of the counter bore (8411).
2. The mold moving device for mold manufacturing according to claim 1, wherein the bottom of the body (81) of the booster seat (8) is provided with a bottom wheel (82), and the bottom of the side hole (12) is provided with a roller groove (121) that fits with the bottom wheel (82).
3. The mold moving device for mold manufacturing according to claim 2, wherein a buffer spring (86) is provided between the main body (81) and the cylinder holder (91) on the corresponding side.
4. The mold moving apparatus for manufacturing a mold as claimed in claim 3, wherein a plurality of rubber columns (847) are provided on a front end of the fixing base (841).
5. The mold moving device for mold manufacturing according to claim 1, wherein the outer side of the elastic rubber sleeve (844) is coated with teflon paint.
6. The mold moving device for mold manufacturing according to claim 1, wherein the jacking mechanism further comprises a guide rod (71), two ends of the guide rod (71) are respectively slidably disposed in the guide holes (55) of the upper inclined block (5) on the corresponding side, and the return spring (7) is sleeved on the guide rod (71).
7. The mold moving device for mold manufacturing according to claim 1, wherein the top of the lower swash block (6) is provided with a chute (61) that mates with the upper swash block (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010924174.2A CN112223602B (en) | 2020-09-04 | 2020-09-04 | Mould mobile device for mould manufacturing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010924174.2A CN112223602B (en) | 2020-09-04 | 2020-09-04 | Mould mobile device for mould manufacturing |
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| Publication Number | Publication Date |
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| CN112223602A CN112223602A (en) | 2021-01-15 |
| CN112223602B true CN112223602B (en) | 2022-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010924174.2A Active CN112223602B (en) | 2020-09-04 | 2020-09-04 | Mould mobile device for mould manufacturing |
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| CN (1) | CN112223602B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113058206A (en) * | 2021-03-30 | 2021-07-02 | 温州职业技术学院 | Body training device for model performance |
| CN115076564A (en) * | 2022-08-09 | 2022-09-20 | 中电科机器人有限公司 | Automatic fixing device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107856960A (en) * | 2017-12-05 | 2018-03-30 | 成都环磊科技有限公司 | A kind of unmanned plane transport case |
| CN209721473U (en) * | 2018-12-25 | 2019-12-03 | 厦门承威自动化有限公司 | A kind of novel hoistable platform |
| CN211071955U (en) * | 2019-07-12 | 2020-07-24 | 绵阳恒弘机械制造有限责任公司 | Milling machine that facilitates use |
| CN211106996U (en) * | 2019-08-14 | 2020-07-28 | 合芯磁导科技(无锡)有限公司 | Liftable wireless transmitter that charges who adjusts |
-
2020
- 2020-09-04 CN CN202010924174.2A patent/CN112223602B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107856960A (en) * | 2017-12-05 | 2018-03-30 | 成都环磊科技有限公司 | A kind of unmanned plane transport case |
| CN209721473U (en) * | 2018-12-25 | 2019-12-03 | 厦门承威自动化有限公司 | A kind of novel hoistable platform |
| CN211071955U (en) * | 2019-07-12 | 2020-07-24 | 绵阳恒弘机械制造有限责任公司 | Milling machine that facilitates use |
| CN211106996U (en) * | 2019-08-14 | 2020-07-28 | 合芯磁导科技(无锡)有限公司 | Liftable wireless transmitter that charges who adjusts |
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| CN112223602A (en) | 2021-01-15 |
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Effective date of registration: 20221116 Address after: 230000 B-2704, wo Yuan Garden, 81 Ganquan Road, Shushan District, Hefei, Anhui. Patentee after: HEFEI LONGZHI ELECTROMECHANICAL TECHNOLOGY Co.,Ltd. Address before: 325000 No. 1 Incubator Building, Science Park, Wenzhou National University, No. 38 Dongfangnan Road, Ouhai Economic Development Zone, Wenzhou City, Zhejiang Province Patentee before: WENZHOU VOCATIONAL & TECHNICAL College |
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Effective date of registration: 20221220 Address after: 266000 500 meters east of Beiwan community neighborhood committee, Jihongtan street, Chengyang District, Qingdao City, Shandong Province Patentee after: Qingdao mingyusheng precision mould Co.,Ltd. Address before: 230000 B-2704, wo Yuan Garden, 81 Ganquan Road, Shushan District, Hefei, Anhui. Patentee before: HEFEI LONGZHI ELECTROMECHANICAL TECHNOLOGY Co.,Ltd. |
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