Cup thread double-roller forming device

Abstract

The utility model discloses a cup body thread double-roller forming device which comprises a machine body, a conveying belt is arranged in the middle of the machine body, a plurality of positioning seats rotating on the conveying belt are arranged on the conveying belt, cup bodies are fixed to the positioning seats, and the conveying belt is used for circularly conveying the positioning seats and the cup bodies; the internal thread rolling device is arranged on one side of the conveying belt and comprises a first roller column, male threads are formed on the surface of the first roller column, and the first roller column is driven by a rotating motor to rotate, can move horizontally and vertically and is used for stretching into the cup body to roll the internal threads; the external thread rolling device is arranged on the other side of the conveying belt and comprises a second roller column, female threads are formed on the surface of the second roller column, and the second roller column is driven by another rotating motor to rotate and can also be controlled to move horizontally and vertically.

Description

Technical Field

[0001] This application relates to the field of cup body processing technology, and in particular to a cup body thread forming device with rollers. Background Technology

[0002] The existing method for rolling the threads of a cup body and rim typically involves using a fixed roller and a moving roller to achieve the rolling of the threads. The moving roller presses the cup body in the direction of the moving roller. Since one of the rollers needs to extend into the cup body, there is a gap between the inner wall of the cup body and the roller. When the two rollers are close together and pressing, the cup body will inevitably tilt, which will affect the quality of the rolled thread, resulting in insufficient thread fullness and the helix of the formed thread not being perpendicular to the central axis of the cup body. This will cause difficulties in screwing the cup lid on and insufficient sealing after screwing on.

[0003] In addition, existing patents that enable roll casting of cup rim threads in a vertical cup state, such as a threading machine with publication number CN109894554A, involve moving a large threading die and a small threading die to the inner and outer sides of the cup body respectively, then moving them towards each other and rotating counterclockwise under the drive of a fifth motor to perform roll casting. After completion, the machine needs to be rotated in the opposite direction to exit the threading die. This results in low die casting efficiency and requires high precision control of the large and small threading dies and the fifth motor.

[0004] The above content is only used to help understand the technical solution of this application and does not represent an admission that the above content is the closest prior art to this application. Summary of the Invention

[0005] Based on this, this application provides a cup body thread roller forming device to solve one of the above-mentioned technical problems.

[0006] The technical solution adopted by this application to solve its technical problem is: a cup body threaded roller forming device, comprising: a machine body, a conveyor belt arranged in the middle of the machine body, a plurality of positioning seats rotating on the conveyor belt, a cup body fixed on the positioning seats, and the conveyor belt used to circulate and transport the positioning seats and the cup body; an internal thread rolling device, arranged on one side of the conveyor belt, including a first roller with a male thread formed on its surface, the first roller being driven to rotate by a rotary motor and capable of horizontal and vertical movement, used to extend into the cup body to roll the internal thread; and an external thread rolling device, arranged on the other side of the conveyor belt, including a second roller with a female thread formed on its surface, the second roller being driven to rotate by another rotary motor and also capable of horizontal and vertical movement, the second roller being used to abut against the outer wall of the cup body and cooperate with the first roller to shape the external thread of the cup body; the first roller and the second roller cooperate with each other to jointly roll the thread on the cup body, the cup body remains vertical during rolling, and the verticality of the rolled thread is improved.

[0007] In some embodiments, both the internal thread rolling device and the external thread rolling device include a bracket, a lifting platform and a sliding plate. The bracket is fixed on the machine body, the lifting platform is sleeved on and slides on the bracket, an mounting plate is fixed on the top of the bracket, and a lifting motor for lifting the lifting platform is fixed on the mounting plate. The output end of the lifting motor is connected to a lifting rod, and the end of the lifting rod is fixed on the lifting platform.

[0008] In some embodiments, the lifting platform is provided with a slide rail, the sliding plate slides on the slide rail, and a propulsion motor is fixedly provided on the lifting platform, the propulsion motor being used to drive the sliding plate to move horizontally on the slide rail.

[0009] In some embodiments, the slide rail is configured to be perpendicular to the conveyor belt in its length direction.

[0010] In some embodiments, both rotary motors are mounted on the machine body, and their output ends are connected to universal joint drive shafts. A gear transmission assembly is provided on the sliding plate, and one end of the universal joint drive shaft is connected to the gear transmission assembly.

[0011] In some embodiments, a single gear transmission group includes a first end and a second end, one end of the universal joint drive shaft is connected to the gear at the first end for transmission, and the two sets of gears at the second end are respectively fixed to the first roller and the second roller.

[0012] In some embodiments, when the first roller and the second roller roll, force is applied to the inner and outer walls of the cup body on the same side. When the first roller and the second roller rotate, the cup body and the positioning seat are driven, and the rotation axis of the cup body remains vertical.

[0013] In some embodiments, the first roller and the second roller rotate in opposite directions.

[0014] The beneficial effects of this application are as follows:

[0015] 1. The first and second rollers are precisely controlled by a servo motor to move in opposite directions and work together to roll the threads of the cup mouth. The first roller extends into the body to roll the inner wall, while the second roller abuts against the outer wall of the cup to shape the threads. During the rolling process, the cup body rotates on the mounting base and always remains vertical, ensuring the perpendicularity of the rolled threads to the cup body and further improving the fullness of the threads at the cup mouth.

[0016] 2. After the cup body is fed, it is transported by a conveyor belt. Servo motors such as lifting motor, propulsion motor, and rotary motor precisely control the opposing movement of the first and second rollers to perform thread processing. The process is highly automated, with a high yield rate and high quality consistency. There is no need for reverse retraction. The production efficiency is greatly improved under automated die casting, and the requirements for precision control are relatively reduced. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a three-dimensional schematic diagram of this application.

[0019] Figure 2 This is a three-dimensional schematic diagram from another angle of this application.

[0020] Figure 3 This is a schematic diagram of the internal thread rolling device of this application.

[0021] Explanation of reference numerals: 1. Machine body, 2. Conveyor belt, 3. Positioning seat, 4. Cup body, 5. Internal thread roller pressing device, 6. External thread roller pressing device, 7. First roller, 8. Second roller, 9. Rotary motor, 10. Support, 11. Lifting platform, 12. Sliding plate, 13. Mounting plate, 14. Lifting motor, 15. Lifting rod, 16. Slide rail, 17. Propulsion motor, 18. Universal joint drive shaft, 19. Gear transmission group, 1901. First end, 1902. Second end. Detailed Implementation

[0022] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application. In addition, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those of ordinary skill in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection of this application.

[0023] In the embodiments of this application, please refer to Figure 1-3As shown, this cup-body threaded roller forming device mainly includes: a machine body 1, a conveyor belt 2 disposed in the middle of the machine body 1, a plurality of positioning seats 3 rotating on the conveyor belt 2, a cup body 4 fixed on the positioning seats 3, and the conveyor belt 2 used for cyclically conveying the positioning seats 3 and the cup body 4; and an internal thread rolling device 5 disposed on one side of the conveyor belt 2, including a first roller 7 with a male thread formed on its surface, the first roller 7 being driven to rotate by a rotary motor 9 and capable of horizontal and vertical movement, for extending into the cup. The inner thread of the cup body 4 is pressed by an internal roller; the outer thread pressing device 6 is set on the other side of the conveyor belt 2, including a second roller 8 with a female thread formed on its surface. The second roller 8 is driven to rotate by another rotary motor 9, which can also control its horizontal and vertical movement. The second roller 8 is used to abut against the outer wall of the cup body 4 and cooperate with the first roller 7 to shape the outer thread of the cup body 4. The first roller 7 and the second roller 8 cooperate with each other to jointly press the thread on the cup body 4. During the pressing, the cup body 4 remains vertical, improving the verticality of the pressed thread.

[0024] The following will continue to describe some preferred / improved embodiments based on the above embodiments. Any one of the following embodiments can be selected, or multiple embodiments can be combined.

[0025] like Figure 1 As shown, both the internal thread rolling device 5 and the external thread rolling device 6 include a bracket 10, a lifting platform 11, and a sliding plate 12. The bracket 10 is fixed on the machine body 1. The lifting platform 11 is sleeved on and slides on the bracket 10. An mounting plate 13 is fixed to the top of the bracket 10. A lifting motor 14 for lifting the lifting platform 11 is fixed on the mounting plate 13. The output end of the lifting motor 14 is connected to a lifting rod 15. The end of the lifting rod 15 is fixed to the lifting platform 11. The height of the lifting platform 11 is controlled by the lifting motor 14. When the lifting motor 14 controls the lifting rod 15 to retract, the lifting platform 11 rises. Conversely, when the lifting motor 14 drives the lifting rod 15 to extend, the lifting platform 11 descends. The lifting platform 11 can only move up and down within a limited range.

[0026] Furthermore, the lifting platform 11 is provided with a slide rail 16, the sliding plate 12 slides on the slide rail 16, and a propulsion motor 17 is fixedly provided on the lifting platform 11. The propulsion motor 17 is used to drive the sliding plate 12 to move horizontally on the slide rail 16. The output shaft of the propulsion motor 17 is threadedly engaged with the sliding plate 12. The horizontal movement of the sliding plate 12 on the slide rail 16 is controlled by driving the output shaft of the propulsion motor 17 to rotate.

[0027] Specifically, the slide rail 16 is configured to be perpendicular to the conveyor belt 2 in the length direction. The slide rail 16 on the internal thread roller pressing device 5 and the external thread roller pressing device 6 are located on the same horizontal straight line, ensuring that when the first roller 7 and the second roller 8 on the sliding plate 12 are rolling, their axes are on the same straight line as the rolling point on the cup body 4.

[0028] Furthermore, both rotary motors 9 are mounted on the machine body 1, and their output ends are connected to universal joint drive shafts 18. A gear transmission assembly 19 is mounted on the sliding plate 12. One end of the universal joint drive shaft 18 is connected to the gear transmission assembly 19. The rotary motor 9 transmits rotational power to the universal joint drive shaft 18, which in turn transmits power to the gear transmission assembly 19. Finally, the gear transmission assembly 19 transmits power laterally, ultimately driving the rotation of the first roller 7 and the second roller 8.

[0029] Specifically, the single gear transmission group 19 includes a first end 1901 and a second end 1902. One end of the universal joint drive shaft 18 is connected to the gear at the first end 1901 for transmission. The two sets of gears at the second end 1902 are respectively fixed to the first roller 7 and the second roller 8. The universal joint drive shaft 18 transmits the rotation to the gear at the first end 1901. The gear at the first end 1901 is transmitted laterally through the intermediate gear meshing with it, ultimately driving the gear at the second end 1902 to rotate, thereby driving the first roller 7 or the second roller 8, which is coaxial with the gear at the second end 1902, to rotate, thus completing the transmission.

[0030] Specifically, when the first roller 7 and the second roller 8 roll, they apply force to the inner and outer walls of the cup body 4 on the same side. When the first roller 7 and the second roller 8 rotate, the cup body 4 and the positioning seat 3 are driven. The rotation axis of the cup body 4 remains vertical. Under the precise control of the rotary motor 9, the first roller 7 and the second roller 8 rotate at the same angular velocity.

[0031] Furthermore, the first roller 7 and the second roller 8 rotate in opposite directions, allowing the cup body 4 to rotate around its axis while remaining vertical and not tilted, and to always maintain one side for thread pressing. After the rollers have rotated a sufficient number of times and the thread is die-cast, the sliding plate 12 can be driven to move, causing the first roller 7 to detach from the inner wall of the cup body 4, and the cup body can be lifted and extracted, resulting in high efficiency.

[0032] Furthermore, the lifting motor, the propulsion motor 17, and the rotary motor 9 in this application are all servo motors that can precisely control the feed output, which can ensure the accuracy of the rolling process and the consistency of the products.

[0033] In practical use, the cup body 4 is first loaded manually or by a robotic arm and fixed on the mounting base. At the same time, the conveyor belt 2 works to transport the cup body 4 to the designated processing position between the internal thread rolling device 5 and the external thread rolling device 6. The propulsion motor 17 drives the sliding plate 12 to move towards the cup body 4 until the first roller 7 is directly above the cup body 4. Then, driven by the lifting motor, the first roller 7 descends to the part of the cup body 4 where the thread needs to be rolled. After that, the propulsion motor 17 drives the first roller 7 and the second roller 8 to move in opposite directions and abut against the inner and outer walls on the same side of the cup body 4. Finally, the rotation motor 9 works to drive the first roller 7 and the second roller 8 to rotate, completing the thread rolling. During the rolling process, the cup body remains vertical, and the rolled thread has high vertical accuracy and good saturation.

[0034] The various embodiments of this application have now been described in detail. To avoid obscuring the concept of this application, some details known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0035] Finally, it should be noted that the above description is only a preferred embodiment of this application. The foregoing embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A cup body thread forming device with rollers, characterized in that, include: The machine body has a conveyor belt in the middle, and a plurality of positioning seats that rotate on the conveyor belt are provided on the conveyor belt. A cup is fixed on the positioning seat, and the conveyor belt is used to circulate and transport the positioning seat and the cup. An internal thread rolling device is provided on one side of the conveyor belt, including a first roller with a male thread formed on its surface. The first roller is driven to rotate by a rotary motor and can move horizontally and vertically to extend into the cup body to roll the internal thread. An external thread rolling device is located on the other side of the conveyor belt. It includes a second roller with a female thread formed on its surface. The second roller is driven to rotate by another rotary motor, which can also control its horizontal and vertical movement. The second roller is used to abut against the outer wall of the cup and cooperate with the first roller to shape the external thread of the cup. The first and second rollers cooperate to roll the threads on the cup body together. During the rolling process, the cup body remains vertical, which improves the verticality of the rolled threads.

2. The cup body thread forming device according to claim 1, characterized in that, Both the internal thread rolling device and the external thread rolling device include a bracket, a lifting platform, and a sliding plate. The bracket is fixed on the machine body, and the lifting platform is sleeved on and slides on the bracket. An mounting plate is fixed on the top of the bracket, and a lifting motor for lifting the lifting platform is fixed on the mounting plate. The output end of the lifting motor is connected to a lifting rod, and the end of the lifting rod is fixed on the lifting platform.

3. The cup body thread forming device according to claim 2, characterized in that, The lifting platform is equipped with a slide rail, the sliding plate slides on the slide rail, and a propulsion motor is fixedly installed on the lifting platform. The propulsion motor is used to drive the sliding plate to move horizontally on the slide rail.

4. The cup body thread forming device according to claim 3, characterized in that, The slide rail is configured to be perpendicular to the conveyor belt in its length direction.

5. The cup body thread forming device according to claim 2, characterized in that, Both of the aforementioned rotary motors are mounted on the machine body, and both of their output ends are connected to universal joint drive shafts. A gear transmission assembly is provided on the sliding plate, and one end of the universal joint drive shaft is connected to the gear transmission assembly.

6. The cup body thread forming device according to claim 5, characterized in that, The single gear transmission group includes a first end and a second end. One end of the universal joint drive shaft is connected to the gear at the first end for transmission, and the two sets of gears at the second end are respectively fixed to the first roller and the second roller.

7. The cup body thread forming device according to claim 1, characterized in that, When the first and second rollers roll, they apply force to the inner and outer walls of the cup body on the same side. When the first and second rollers rotate, the cup body and the positioning seat are driven, and the rotation axis of the cup body remains vertical.

8. The cup body thread forming device according to claim 7, characterized in that, The first and second rollers rotate in opposite directions.

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