CN210336998U - Tire building drum - Google Patents
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- CN210336998U CN210336998U CN201921004533.1U CN201921004533U CN210336998U CN 210336998 U CN210336998 U CN 210336998U CN 201921004533 U CN201921004533 U CN 201921004533U CN 210336998 U CN210336998 U CN 210336998U
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- building drum
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- grooves
- actuating assembly
- contraction
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Abstract
The utility model provides a tire molding drum, which comprises two half drums; each half-drum comprises: a bead locking unit, a turn-up unit located axially outward of the bead locking unit, a contraction section located axially inward of the bead locking unit; the contraction section comprises a body, an annular contraction surface, an actuating assembly and a plurality of support plate groups, wherein the annular contraction surface is sleeved outside the body and can move radially; the actuating assembly drives the plurality of support plate groups to form a support surface so that the annular contraction surface is in a flush or contraction position; the actuating assembly comprises a plurality of stop elements provided with grooves, the set of support plates being in abutment with the grooves on the stop elements in the retracted position, a circumferential groove being formed at the retracted section; the body comprises a side wall which is far away from the tire bead locking unit, and a plurality of mounting holes are formed in the side wall; the stopper is installed in or removed from the actuating assembly through the installation hole. Therefore, the utility model discloses a building drum has the advantage that the commonality is strong.
Description
Technical Field
The utility model relates to a tire former technical field especially relates to a tire building drum for shaping tire child embryo.
Background
Run-flat tires have been gradually applied to some automobiles in order to ensure that the vehicle can continue to run after a tire burst or deflation. Run-flat tires currently increase sidewall thickness and stiffness by adding a layer of rubber reinforcement at the sidewall. In run-flat tires, rubber reinforcements are interposed between the innerliner and the ply near the beads. After the tire blank is formed, the rubber reinforcement extends from the bead in the radial direction of the run-flat tire, at a position axially inward with respect to both the sidewall and the carcass ply and axially outward with respect to the inner liner. The special structure of the run-flat tire also requires a structure corresponding to that of the tire building drum.
Chinese patent publication No. CN102774024A discloses a forming apparatus (i.e., a drum) for a run-flat tire, including a pair of sidewall plates that can be expanded and reduced in diameter, which are located axially inside of a bead lock unit and can support a sidewall portion of a carcass base from the inside; the outer peripheral surface of the sidewall plate is formed with a recessed peripheral groove conforming to the cross-sectional shape of the rubber reinforcement (see fig. 4 of the patent document). However, since the shape of the circumferential groove is fixed, on one hand, the forming drum cannot meet the requirement of forming a flat cylindrical surface when the inner liner is attached, and on the other hand, the shape of the circumferential groove cannot be matched with rubber reinforcements of different specifications or shapes.
Chinese patent publication No. CN106794651A discloses a drum for manufacturing a run-flat tire, which includes a contraction section provided with a contraction surface capable of moving radially. The constriction section comprises: a plurality of profile segments which are placed adjacent to each other in the axial direction of the drum shaft and which are individually movable in the radial direction between a flush position and a retracted position; a profile seat ring with a step-like stop surface for stopping the profile segments in a retracted position; an actuator segment provided with a main body extending in a radial direction parallel to the profile segments and functioning essentially like a profile segment, and a leveling shaft projecting from both sides of the main body parallel to the axial direction of the drum shaft towards both sets of profile segments, cooperating directly or indirectly with the plurality of profile segments to bring the plurality of profile segments to follow the main body together between a flush position and a retracted position. The contraction section also comprises a piston which is matched with the conical surface of the main body. The body of the actuator segment is moved radially outwardly by the piston drive, and the profile segments together with the body support the converging surface in a flush position by direct or indirect contact of the leveling shaft with the profile segments. When the body of the actuator segment is moved radially inwards, the profile segment together with the leveling shaft is moved radially inwards to abut against the profile ring seat.
In the production process of tire blanks, the cross-sectional shapes of rubber reinforcements of run-flat tires of different models or specifications are also different. In order to meet the production requirements of run-flat tires of different models or specifications, when the profile seat ring with different step-shaped stop surfaces needs to be replaced, a circumferential groove matched with the cross section shape of the corresponding rubber reinforcing piece is formed. Although the drum disclosed in chinese patent publication No. CN106794651A can ensure that a flat cylindrical surface is formed when the liner is attached, a circumferential groove matching with the rubber reinforcement can also be formed; however, since the profile seat ring defining the circumferential groove is enclosed in the shrink section, the operator needs to complete the replacement of the profile seat ring with removal of the other components in the shrink section. In particular, the replacement of the profile ring can be carried out by an operator who has to remove at least a plurality of profile segments, actuator segments, etc. The replacement operation is time consuming, requiring a relatively long downtime of the entire tire building apparatus, with significant losses resulting from the downtime of the apparatus. In addition, the precision and the service life of the parts in the contraction section are affected by frequent disassembly and assembly of the parts. In a word, the drum is less versatile and maintenance difficult due to the profile ring not being easily replaceable.
In view of the above, there is a need for an improved tire building drum that solves the above problems.
Disclosure of Invention
An object of the utility model is to provide a tire building drum that easily changes parts, commonality are strong.
In order to achieve the purpose, the utility model provides a tire molding drum, a main shaft and two half drums which are sleeved on the main shaft in a bilateral symmetry manner; each half-drum comprises: a bead locking unit, a turn-up unit located axially outward of the bead locking unit, a contraction section located axially inward of the bead locking unit;
the constriction section comprises: the device comprises a body, an annular contraction surface which is sleeved outside the body and can move radially, a plurality of supporting sheet groups which are contained in the body and are uniformly distributed along the circumferential direction, and an actuating assembly contained in the body; the actuating assembly is used for driving the plurality of support plate groups to enable the annular contraction surface to be in a flush position or a contraction position;
the actuating assembly comprises a plurality of stop members provided with third grooves, and in the retracted position, the support sheet group abuts against the third grooves of the stop members so that the retracted section forms a circumferential groove;
the body comprises a first side wall positioned on one side far away from the tire bead locking unit, and a plurality of mounting holes are formed in the first side wall; the plurality of stoppers may be installed in or removed from the actuating assembly through the plurality of mounting holes, and one end of the plurality of stoppers is supported on the first sidewall.
Further, each support plate group comprises a plurality of support plates placed adjacent to each other in a direction parallel to the main shaft axis, each support plate being arranged to be individually movable in a radial direction between a flush position and a retracted position.
Further, the actuating assembly comprises: the base disc is uniformly provided with a plurality of radial through holes corresponding to the number and the positions of the support sheet groups along the circumferential direction; and the piston rods are accommodated in the radial through holes respectively.
Furthermore, a plurality of first grooves extending along the axial direction of the base plate are formed in the periphery of the base plate at positions corresponding to the plurality of radial through holes; the actuating assembly further comprises a plurality of supporting blocks which are respectively arranged at the ends of the plurality of piston rods and inserted into the first grooves.
Furthermore, a plurality of groups of second grooves are uniformly formed in the periphery of the base disc corresponding to the plurality of support plate groups, and the second grooves are communicated along the axial direction of the base disc; the number of each group of second grooves is two, and the two second grooves in each group are respectively positioned on two sides of the corresponding first grooves; the stop piece is inserted in the second groove.
Further, the actuating assembly comprises an elastic piece, the elastic piece is sleeved on the periphery of the plurality of supporting piece groups and is radially arranged in the annular contraction surface; the elastic member is arranged to be elastically flexed in a radial direction between a first condition for supporting the annular constricting surface in the flush position and a second condition for supporting the annular constricting surface in the constricting position; wherein the second state is a natural state of the elastic member and the first state is a stressed state of the elastic member.
Furthermore, the annular contraction surface is arranged on the periphery of the contraction section and is in a sleeve shape; one end of the annular contraction surface is connected to the bead locking unit, and the other end of the annular contraction surface is connected to the first side wall of the body; and the circumference of the annular constricting surface in its natural state is smaller than the circumference of the constricting section in its constricted position.
Further, the unpacking unit includes: the turning-up rods are uniformly distributed along the circumferential direction, extend along the axial direction of the main shaft when at the initial position, and form a first circumferential surface around the axis of the main shaft at a first diameter; in the flush position, the annular convergent surface forms a second circumferential surface around the main shaft axis at the first diameter; the first and second circumferential surfaces together serve as an application surface for the tire component on the tire building drum for receiving the first tire layer.
Further, the body further includes a second sidewall located on a side close to the bead lock unit; the actuating assembly also comprises a leveling shaft which is supported on the first side wall and the second side wall of the body and is parallel to the main shaft; each support plate has a slot formed therein extending in a radial direction for receiving a leveling shaft.
Furthermore, one ends of the plurality of stop parts supported on the first side wall are connected into a whole.
Compared with the prior art, the utility model discloses a tire building drum has following beneficial technological effect at least:
in the tire building drum of the present invention, the stopper for abutting and cooperating with each support sheet group to form the circumferential groove matching with the cross-sectional shape of the rubber reinforcement can be installed in or taken out of the actuating assembly accommodated in the body of the shrinkage section by the operator through the installation hole provided on the first side wall of the body of the shrinkage section; thus, the tire building drum stopper has the advantage of being easily replaceable. Therefore, the utility model discloses a tire building drum can satisfy the demand of laminating the rubber reinforcement of different specifications or shape in the run-flat tire child embryo production for this tire building drum has advantages such as the commonality is strong, be convenient for maintain.
Drawings
The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided for explaining the invention without unduly limiting it. In the drawings:
FIG. 1 is a schematic view of a partial cross-sectional structure of a tire building drum according to the present invention, wherein the contraction surface of the contraction section is in a contracted position;
fig. 2 is a schematic cross-sectional structure diagram of a half drum of a tire building drum according to the present invention, wherein a contraction surface of a contraction section is in a contraction position;
FIG. 3 is an enlarged view of a portion of FIG. 2 at M;
fig. 4 is a side view taken along line a-a of fig. 1.
FIG. 5 is a schematic perspective view of the mating relationship of the base plate, the support block and the stop member;
fig. 6 is a schematic cross-sectional structure diagram ii of a half drum of the tire building drum provided by the present invention, wherein the contraction surface of the contraction section is in a flush position;
FIG. 7 is an enlarged view of a portion of FIG. 6 at N;
FIG. 8 is a schematic perspective view of a half drum, with the spindle omitted;
fig. 9 is a partial enlarged view of fig. 8 at H.
In the figure:
100-a tire building drum; 1-a main shaft; 2-half drum;
10-a bead locking unit; 20-a reverse packaging unit; 30-a constriction section;
21-turn-up pole;
31-an annular convergent surface; 32-an actuation assembly; 33-set of support sheets; 34-a body;
321-a basal disc; 322-a piston rod; 323-supporting block; 324-a stop; 325-an elastic member; 326-find the flat axis;
a-a radial through hole; b-a first groove; c-a second groove; d-a third groove; e-mounting holes; a slot f;
331-support piece;
34 a-a first side wall; 34 b-a second side wall;
s1 — a first circumferential surface; s2 — a second circumferential surface; d1-first diameter.
Detailed Description
To make the purpose, technical solution and advantages of the present invention clearer, the following will combine the embodiments of the present invention and the corresponding drawings to clearly and completely describe the technical solution of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1 to 9, the present invention provides a tire building drum applied to a tire building machine for building an unvulcanized run-flat tire blank.
The tire building drum 100 includes: the drum comprises a main shaft 1 and two half drums 2 which are symmetrically sleeved on the main shaft 1. Wherein each half-drum 2 comprises: a bead lock unit 10 for radially supporting a bead (not shown); a turn-up unit 20 located axially outside the bead lock unit 10; and a contraction section 30 located axially inside the bead lock unit 10.
The turn-up unit 20 comprises a plurality of turn-up rods 21 uniformly distributed in the circumferential direction, and when the turn-up rods 21 are in the initial position, the plurality of turn-up rods 21 extend in the axial direction of the main shaft 1 to form a first circumferential surface S1 which is substantially closed and flat. The first circumferential surface S1 extends axially about the spindle 1 axis at a first diameter D1.
The contraction section 30 includes a body 34, an annular contraction surface 31 sleeved outside the body and capable of moving radially, a plurality of support plate groups 33 housed in the body 34 and uniformly distributed along a circumferential direction, and an actuating assembly 32 housed in the body 34. The actuating assembly 32 is used to drive a plurality of support plate sets 33 forming a support surface such that the annular constricting surface 31 is in a flush or constricting position.
Specifically, under the action of the actuating assembly 32, on the one hand, the annular constricting surface 31 may be in a flush position at a first diameter D1, forming a second circumferential surface S2 around the axis of the main shaft 1 at the first diameter D1. The first circumferential surface S1 and the second circumferential surface S2 described above collectively serve as the application surfaces of the tire components on the tire building drum 100 to receive the first tire layer, i.e., the inner liner. On the other hand, under the drive of the actuating assembly 32, the annular constricting surface 31 moves radially inwardly relative to the axis of the main shaft 1 from the flush position to the constricted position. In the retracted position, a circumferential groove can be formed at the retraction section 30, which groove conforms to the cross-sectional shape of the rubber reinforcement.
Next, a specific structure of the contraction section 30 is described in detail.
As shown in fig. 3 to 5 and 7 to 9, the body 34 includes a first sidewall 34b and a second sidewall 34a, wherein the first sidewall 34b is located on a side away from the bead lock unit 10, and the second sidewall 34a is located on a side close to the bead lock unit 10.
Further, the annular contraction surface 31 is provided on the outer periphery of the contraction section 30, and is in a sleeve shape. And the annular contraction surface 31 has one end connected to the bead lock unit 10 and the other end connected to the first side wall 34b of the body 34. The annular constricting surface 31 is made of an elastic or flexible material. In the natural state, the circumference of the annular constriction surface 31 is smaller than the circumference of the constriction section 30 in the constriction position. Thus, the annular constricting surface 31 always tends to constrict uniformly towards its natural diameter under elastic tension.
Further, each support sheet set 33 includes a plurality of support sheets 331, the plurality of support sheets 331 being placed adjacent to each other along a direction parallel to the axis of the spindle 1. Each support tab 331 is arranged to be individually movable in a radial direction between a flush position and a retracted position. In the flush position, all support tabs 331 are at the same radial distance from the axis of the spindle 1 to form a flush support surface to support the annular constricting surface 31 in a flush position. In the retracted position, each support tab 331 is individually moved radially inwardly to form a non-flush support surface to support the annular retracting surface 31 in the retracted position.
Further, the actuating assembly 32 includes a base plate 321, and a plurality of radial through holes a corresponding to the number and positions of the supporting plate groups 33 are uniformly formed on the base plate 321 along the circumferential direction; the plurality of piston rods 322 are respectively accommodated in the plurality of radial through holes a. The outer periphery of the base plate 321 is further provided with a plurality of first grooves b extending along the axial direction thereof at positions corresponding to the plurality of radial through holes a. The actuating assembly 32 further includes a plurality of supporting blocks 323 respectively disposed at ends of the plurality of piston rods 322 and inserted into the first grooves b. Preferably, the supporting block 323 is fixedly connected with the end of the piston rod 322, or the supporting block 323 and the piston rod 322 are integrally provided.
Pneumatically, when the piston rod 322 is moved radially outward along the radial through hole a to be in the extended position, the piston rod 322 pushes up the supporting block 323, so that all the supporting pieces 331 are moved radially outward to be in the flush position, so that the annular constricted face 31 can be in the flush position to form the second circumferential surface S2. When the piston rod 322 is moved radially inward along the radial through hole a to be in the retracted position, the supporting block 323 is received in the first groove b to allow the supporting plate group 33 to move radially inward to the retracted position.
Further, a plurality of sets of second grooves c are uniformly formed in the periphery of the base disc 321 corresponding to the plurality of support plate sets 33, and the second grooves c penetrate through the base disc 321 in the axial direction. The number of each group of second grooves c is 2, and the two second grooves c in each group are respectively positioned on two sides of the corresponding first grooves b. The actuating assembly 32 further includes a plurality of stoppers 324, and the stoppers 324 are inserted into the second grooves c. The stopper 324 is formed with a third groove d having a shape conforming to the cross-sectional shape of the rubber reinforcement.
As such, when all the support tabs 331 move radially inward to the retracted position, each support tab 331 abuts against the stop 324 and contacts the third groove d of the stop 324 to form a non-flush support surface to support the annular retracting surface 31 in the retracted position.
Further, to ensure that all the support tabs 331 can move radially inward to the retracted position, contact is made with the third groove d of the stopper 324. The actuating assembly 32 further comprises an elastic member 325, the elastic member 325 being peripherally arranged to the plurality of support plate groups 33 and being radially arranged within the annular constricting surface 31 and being radially movable with respect to the annular constricting surface 31 for supporting the annular constricting surface 31 in the flush position or the constricting position.
Further, the elastic member 325 is arranged to be elastically flexed in a radial direction between a first state for supporting the annular constricting surface 31 in the flush position and a second state for supporting the annular constricting surface 31 in the constricting position. Wherein the second state is the natural state of the resilient member 325. The first state is a stressed state of the elastic member 325.
In the production process of tire blanks, the cross-sectional shapes of rubber reinforcements of run-flat tires of different models or specifications are also different. To accommodate run-flat tire production requirements of different models or gauges, it is necessary to replace the stopper 324 with a groove of a different shape to match the cross-sectional shape of the corresponding rubber reinforcement.
Therefore, as shown in fig. 3 and 7 to 9, a plurality of mounting holes e are opened on the first side wall 34b of the body 34 corresponding to the stoppers 324. Through the mounting hole e, an operator may insert the stopper 324 into the second groove c, and one end of the stopper 324 is supported on the first sidewall 34 b. Also, through the mounting hole e, the operator can take out the stopper 324 inserted into the second groove c. Thus, the operator can easily and quickly complete the replacement of the stop 324 without having to disassemble other components of the constricted section 30 to accomplish the objectives of the present invention.
Preferably, the ends of the plurality of stoppers 324 supported by the first side wall 34b may be integrally connected to further increase the speed of installation and removal.
Further, the actuating assembly 32 further includes a leveling shaft 326, wherein the leveling shaft 326 is supported on the first and second sidewalls of the body 34 in parallel with the main shaft 1. A slot f extending in a radial direction is cut in each support piece 331 for receiving the leveling shaft 326. With the piston rod 322 in the extended position, the engaged support tabs 331 are all moved to the flush position by the leveling shaft 326 engaging the slot f.
Furthermore, the tyre building drum 100 comprises a vacuum suction device (not shown) operatively connected to the shrink section 30 for creating a partial vacuum between the annular shrink surfaces 31 and the first tyre layer. Under the influence of the partial vacuum, in the retracted position, the first tyre layer is retracted onto the annular shrink surfaces 31.
To sum up, the utility model provides a tire building drum 100, which can not only ensure that a smooth cylindrical surface is formed when a first tire layer (inner liner) is pasted, but also form a circumferential groove matched with a rubber reinforcement; and, be used for the cooperation to form the stopper 324 of this circumferential groove in this tire building drum, easily change for the tire building drum can satisfy the demand of laminating the rubber reinforcement of different specifications or shape in the production of run-flat tire child embryo, makes this tire building drum have advantages such as the commonality is strong, be convenient for maintain.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above-mentioned are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A tire building drum comprises a main shaft and two half drums which are symmetrically sleeved on the main shaft; the method is characterized in that: each of the half drums includes: a bead locking unit, a turn-up unit located axially outward of the bead locking unit, a contraction section located axially inward of the bead locking unit;
the constriction section comprises: the device comprises a body, an annular contraction surface which is sleeved outside the body and can move radially, a plurality of supporting sheet groups which are contained in the body and are uniformly distributed along the circumferential direction, and an actuating assembly contained in the body; the actuating assembly is used for driving the plurality of support plate groups to enable the annular contraction surface to be in a flush position or a contraction position;
the actuating assembly comprises a plurality of stops provided with third grooves, the set of struts abutting the third grooves of the stops in the retracted position so that the retracted section forms a circumferential groove;
the body comprises a first side wall positioned on one side far away from the bead locking unit, and a plurality of mounting holes are formed in the first side wall; the plurality of stoppers are installed in or removed from the actuating assembly through the plurality of mounting holes, and one end of the plurality of stoppers is supported on the first sidewall.
2. Tyre building drum according to claim 1, wherein: each support plate set comprises a plurality of support plates placed adjacent to each other in a direction parallel to the spindle axis, each support plate being arranged to be individually movable in a radial direction between a flush position and a retracted position.
3. Tyre building drum according to claim 1, wherein: the actuating assembly includes: the base disc is uniformly provided with a plurality of radial through holes corresponding to the number and the positions of the support sheet groups along the circumferential direction; and the piston rods are accommodated in the radial through holes respectively.
4. A tyre building drum according to claim 3, wherein: a plurality of first grooves extending along the axial direction of the base plate are further formed in the periphery of the base plate at positions corresponding to the plurality of radial through holes; the actuating assembly further comprises a plurality of supporting blocks which are respectively arranged at the ends of the plurality of piston rods and inserted into the first grooves.
5. Tyre building drum according to claim 4, wherein: a plurality of groups of second grooves are uniformly formed in the periphery of the base disc corresponding to the plurality of support plate groups, and the second grooves are communicated along the axial direction of the base disc; the number of each group of second grooves is two, and the two second grooves in each group are respectively positioned on two sides of the corresponding first grooves; the stop piece is inserted in the second groove.
6. Tyre building drum according to claim 1, wherein: the actuating assembly comprises an elastic piece, the elastic piece is sleeved on the periphery of the plurality of supporting piece groups and is radially arranged in the annular contraction surface; the elastic member is arranged to be elastically flexed in a radial direction between a first condition for supporting the annular constricting surface in the flush position and a second condition for supporting the annular constricting surface in the constricting position; wherein the second state is a natural state of the elastic member and the first state is a stressed state of the elastic member.
7. Tyre building drum according to claim 1, wherein: the annular contraction surface is arranged on the periphery of the contraction section and is in a sleeve shape; one end of the annular contraction surface is connected to the bead locking unit, and the other end of the annular contraction surface is connected to the first side wall of the body; and the circumference of the annular constricting surface in its natural state is smaller than the circumference of the constricting section in its constricted position.
8. Tyre building drum according to claim 1, wherein: the anti-packet unit comprises: a plurality of turnup rods uniformly distributed in a circumferential direction, the plurality of turnup rods extending in an axial direction of the main shaft at a start position, forming a first circumferential surface around the main shaft axis at a first diameter; in the flush position, the annular converging surface forms a second circumferential surface about the spindle axis at the first diameter; the first and second circumferential surfaces together serve as an application surface for the tire component on the tire building drum for receiving the first tire layer.
9. Tyre building drum according to claim 2, wherein: the body further comprises a second sidewall located on a side adjacent to the bead lock unit; the actuating assembly further comprises a leveling shaft, and the leveling shaft is supported on the first side wall and the second side wall of the body and is parallel to the main shaft; a slot extending in a radial direction is formed in each support plate to receive the leveling shaft.
10. Tyre building drum according to claim 1, wherein: the ends of the plurality of stop parts supported on the first side wall are connected into a whole.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921004533.1U CN210336998U (en) | 2019-07-01 | 2019-07-01 | Tire building drum |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921004533.1U CN210336998U (en) | 2019-07-01 | 2019-07-01 | Tire building drum |
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| CN210336998U true CN210336998U (en) | 2020-04-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110202809A (en) * | 2019-07-01 | 2019-09-06 | 萨驰华辰机械(苏州)有限公司 | A kind of tire assembly drum |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110202809A (en) * | 2019-07-01 | 2019-09-06 | 萨驰华辰机械(苏州)有限公司 | A kind of tire assembly drum |
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Address after: No.111 hengchangjing Road, Zhoushi Town, Kunshan City, Suzhou City, Jiangsu Province Patentee after: Sachi Intelligent Equipment Co.,Ltd. Address before: No.111 hengchangjing Road, Zhoushi Town, Kunshan City, Suzhou City, Jiangsu Province Patentee before: SAFE-RUN MACHINERY (SUZHOU) Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |