CN-224209033-U - Thread rolling device for cup mouth of water cup

CN224209033UCN 224209033 UCN224209033 UCN 224209033UCN-224209033-U

Abstract

The utility model discloses a thread rolling device for a cup mouth of a cup, which can greatly improve the out-of-roundness of the cup mouth after thread rolling, and comprises a first thread die arranged on the inner side of the cup mouth of the cup and a second thread die arranged on the outer side of the cup mouth of the cup, and can synchronously rotate, wherein the second thread die can be driven to be far away from or close to the first thread die, and the thread rolling device further comprises a pinch roller mechanism fixed on a telescopic driving device, at least comprises a pinch roller capable of rotating, in the rotation direction of the first thread die, the pinch roller is arranged behind the thread rolling position where the second thread die is contacted with the first thread die, and when the pinch roller and the second thread die are in contact with each other and tightly pressed on the cup mouth of the cup, the section of the cup mouth between the pinch roller and the second thread die can be tightly attached to the first thread die.

Inventors

HU YUEYAN
LIN WEIQIANG
LV TING
WU WEI
LV LIANG
SHI YONGJUN
LIU XIAOYAN
Guan Qingshang

Assignees

浙江哈尔斯真空器皿股份有限公司

Dates

Publication Date: 20260508
Application Date: 20250529

Claims (6)

1. A thread rolling device for a cup rim of a cup comprises a first thread die (1) arranged on the inner side of the cup rim and a second thread die (2) arranged on the outer side of the cup rim, and can synchronously rotate, and the second thread die (2) can be driven to be far away from or close to the first thread die (1), and is characterized in that: the telescopic driving device also comprises a pinch roller mechanism (3) fixed on the telescopic driving device and at least comprises a pinch roller (31) capable of rotating automatically; in the rotation direction of the first thread die (1), the pressing wheel (31) is arranged at the rear of a thread rolling position where the second thread die (2) is contacted with the first thread die (1); And when the pressing wheel (31) and the second thread die (2) are in conflict and press on the cup rim, the section of the cup rim between the pressing wheel (31) and the second thread die (2) can be tightly attached to the first thread die (1).
2. A thread rolling apparatus for a cup opening of a water cup according to claim 1, wherein: When the pressing wheel (31) and the second thread die (2) are in contact with and tightly pressed on the cup opening of the cup, the included angle between the central connecting line of the pressing wheel (31) and the first thread die (1) and the central connecting line of the second thread die (2) and the first thread die (1) is not more than 90 degrees.
3. A thread rolling apparatus for a cup opening of a water cup according to claim 1, wherein: When the pressing wheel (31) and the second thread die (2) are in contact with each other and tightly pressed on the cup opening of the cup, an included angle between the central connecting line of the pressing wheel (31) and the first thread die (1) and the central connecting line of the second thread die (2) and the first thread die (1) is 90 degrees.
4. A thread rolling apparatus for a cup opening of a water cup according to claim 1, wherein: The pinch roller mechanism (3) at least comprises a cantilever (32), a spring arm (33) and an elastic mechanism; The pinch roller (31) can be arranged on the spring arm (33) in a self-rotating way; the spring arm (33) is telescopically and movably arranged on the cantilever (32) through an elastic mechanism; The elastic mechanism has elastic force for enabling the pinch roller (31) to press and apply force to the first thread die (1); The cantilever (32) is fixedly connected to the telescopic driving device.
5. A thread rolling apparatus for a cup opening of a water cup as claimed in claim 4, wherein: The elastic mechanism at least comprises a movable bolt (35) and a first spring (36); The movable bolt (35) is of a partial thread structure, threads at one end of the movable bolt penetrate through a movable hole (321) at one end of the cantilever (32) and are fixedly connected with the spring arm (33) in a threaded mode, and the head at the other end of the movable bolt is in interference limit with the cantilever (32); The first spring (36) is sleeved on the movable bolt (35) and is arranged between the cantilever (32) and the elastic arm (33).
6. A thread rolling apparatus for a cup opening of a water cup as claimed in claim 4, wherein: the elastic structure comprises a movable bolt (35), a first spring (36), a second spring (37), a baffle plate (38) and a fixed bolt (39); the movable bolt (35) and the fixed bolt (39) are of a partial thread structure; Threads at one end of the movable bolt (35) sequentially penetrate through the baffle (38) and the cantilever (32) to be in threaded connection with the spring arm (33) for fixation, and the head at the other end is in interference limit with the baffle (38); The screw thread at one end of the fixing bolt (39) passes through the baffle plate (38) to be in threaded connection and fixed with the cantilever (32), and the head at the other end is in interference limit with the baffle plate (38), and the fixing bolt (39) is arranged at two sides of the movable bolt (35) symmetrically; the first spring (36) is sleeved on the movable bolt (35) and is arranged between the cantilever (32) and the elastic arm (33); The second spring (37) is sleeved on the movable bolt (35) and arranged between the cantilever (32) and the baffle plate (38).

Description

Thread rolling device for cup mouth of water cup Technical Field The utility model belongs to the technical field of equipment for processing a water cup, and particularly relates to a thread rolling device for a water cup opening. Background The connection mode of the water cup and the cup cover is usually screw thread screwing connection, so that screw threads are required to be processed at the cup mouth of the water cup during processing of the metal water cup. The existing thread processing mode generally adopts a rolling mode, and a thread female die (or a thread male die) is placed on the inner side of a cup opening, and the thread male die (or the thread female die) is matched with the thread female die (or the thread male die) to roll on the outer side of the cup opening, so that threads can be formed on the cup opening by rolling, such as manufacturing equipment of rolling threads of a barrel body of a ZL201320419766.4 heat-preserving container, a thread processing device of a cup body and the like. In the prior art, in the process of forming the extrusion cup mouth, the thin-wall cup mouth can deform and lose round, and the screwing between the cup mouth and the cup cover is influenced after the round is lost, so that the problem of losing round is also required to be improved. Disclosure of Invention In order to solve the problems in the prior art, the utility model provides the thread rolling device for the cup mouth of the water cup, which can greatly improve the out-of-roundness of the cup mouth after thread rolling. In order to achieve the above purpose, the present utility model adopts the following technical scheme. The rolling thread device for the cup mouth of the water cup comprises a first thread die arranged on the inner side of the cup mouth of the water cup, a second thread die arranged on the outer side of the cup mouth of the water cup and capable of synchronously rotating, and a pinch roller mechanism fixed on a telescopic driving device and at least comprising a pinch roller capable of rotating, wherein the pinch roller is arranged behind a thread rolling position where the second thread die is in contact with the first thread die in the rotation direction of the first thread die, and when the pinch roller and the second thread die are in contact with and pressed on the cup mouth of the water cup, the section of the cup mouth of the water cup, which is positioned between the pinch roller and the second thread die, can be tightly attached to the first thread die. Compared with the prior art, the novel rolling device has the beneficial effects that by adopting the technical scheme, the pinch roller mechanism is arranged, so that the pinch roller can be tightly pressed on the cup rim of the cup, the pinch roller is arranged behind the thread rolling position where the second thread die is in contact with the first thread die, namely, the section of the cup rim between the pinch roller and the second thread die is the section of the thread to be rolled, the two ends of the section can be tightly attached to the first thread die through the compression of the pinch roller and the first thread die, the gap is eliminated, and the out-of-roundness of the cup rim after the thread rolling can be greatly improved. Preferably, when the pressing wheel and the second thread die are in contact with and pressed against the cup rim of the cup, an included angle between the central connecting line of the pressing wheel and the first thread die and the central connecting line of the second thread die and the first thread die is not more than 90 degrees. By adopting the technical scheme, through testing, the included angle between the central connecting line of the pressing wheel and the first thread die and the central connecting line of the second thread die and the first thread die is 90 degrees, which is the maximum angle of the section of the cup mouth between the pressing wheel and the second thread die, which is tightly attached to the first thread die, and after the angle exceeds 90 degrees, the force is applied in the obtuse angle direction, so that the thin-wall cup mouth is easily arched, and the clearance elimination is not facilitated. Preferably, when the pressing wheel and the second thread die are in contact with and pressed against the cup rim of the cup, an included angle between the central connecting line of the pressing wheel and the first thread die and the central connecting line of the second thread die and the first thread die is 90 degrees. By adopting the technical scheme, through testing, 90 degrees are the best angles of the sections of the cup rim between the pressing wheel and the second thread die, which are tightly attached to the first thread die, and when the clearance is eliminated, the sections of the cup rim between the pressing wheel and the second thread die are long enough, and the second thread die and the pressing wheel are also ensured not to interfere. T