Cup thread forming process

Abstract

The invention discloses a cup thread forming process which comprises the following steps: S1, fixing a to-be-processed cup body: clamping and fixing the lower end of the to-be-processed cup body on cup body positioning bases, and conveying a plurality of cup body positioning bases to a processing station through a transmission belt to ensure that the axial direction of the to-be-processed cup body is perpendicular to the horizontal plane; s2, positioning an inner pressing wheel: driving an inner pressing wheel fixing seat to move through a first servo control system, so that the inner pressing wheel extends into a cup opening of the cup body to be processed and is attached to the inner wall of the cup body; s3, positioning an outer pressing plate: driving an outer pressing plate fixing seat to move through a second servo control system, so that the starting point of a linear groove in the outer pressing plate is close to the outer wall of the cup body to be processed; the inner pressing wheel is driven to rotate, meanwhile, the outer pressing plate is controlled to move according to a preset track, the non-equal-height spiral protruding part on the outer surface of the inner pressing wheel and the linear groove of the outer pressing plate synchronously correspond to the end point from the starting point, and non-equal-height threads are formed on the cup body to be machined through synchronous lifting or offset of the outer pressing plate.

Description

Technical Field

[0001] This application relates to the technical field of thermos cup processing, and particularly to a cup body thread forming process. Background Art

[0002] In traditional cup body thread forming processes, methods such as machining like turning or rolling are usually adopted. These traditional methods often require the cup body to be processed to be placed obliquely to adapt to the angles of the cutting tools or dies. This not only limits the production efficiency but also easily leads to problems such as low thread accuracy and poor surface quality. Especially for some products with high-precision requirements, such as stainless steel thermos cups and aluminum sports water bottles, traditional processing methods are difficult to meet their strict dimensional and appearance standards. In addition, due to the high operational complexity and difficulty in equipment adjustment, the cost increases, and at the same time, the labor intensity of workers is increased.

[0003] With the continuous improvement of market requirements for product quality and production efficiency, the existing technologies can no longer fully meet the needs. There are obvious deficiencies especially in terms of automation level, processing accuracy, and flexibility in adapting to different specifications of products.

[0004] The above content is only used to assist in understanding 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 forming process to solve the above technical problems.

[0006] The technical solution adopted by this application to solve its technical problems is: a cup body thread forming process, including the following steps: S1. Fix the cup body to be processed: Clamp and fix the lower end of the cup body to be processed on the cup body positioning base, and convey multiple cup body positioning bases to the processing station through a conveyor belt to ensure that the axis of the cup body to be processed is perpendicular to the horizontal plane; S2. Position the inner pressure wheel: Drive the inner pressure wheel fixing seat to move through the first servo control system, so that the inner pressure wheel extends into the cup mouth of the cup body to be processed and fits with the inner wall of the cup body; S3. Position the outer pressing plate: Drive the outer pressing plate fixing seat to move through the second servo control system, so that the starting point of the linear groove on the outer pressing plate is close to the outer wall of the cup body to be processed; S4. Synchronous extrusion forming: Drive the inner pressure wheel to rotate, and at the same time control the outer pressing plate to move along a predetermined trajectory, so that the non-equidistant spiral protrusions on the outer surface of the inner pressure wheel and the linear groove of the outer pressing plate correspond from the starting point to the end point synchronously. Through the synchronous lifting or offset of the outer pressing plate, a non-equidistant thread is formed on the cup body to be processed.

[0007] In some embodiments, in step S2: The first servo control system drives the inner pressure wheel fixing seat to move along the X-axis through a first servo motor, and drives the substrate to move up and down along the Z-axis through a servo electric cylinder to adjust the longitudinal and transverse positions of the inner pressure wheel.

[0008] In some embodiments, in step S3: The second servo control system drives the deflection frame to deflect around the X-axis through a second servo motor, drives the sliding seat to move along the X-axis through a third servo motor, and drives the outer pressure plate fixing seat to move along the Y-axis through a fourth servo motor to adjust the longitudinal, transverse and deflection angles of the outer pressure plate.

[0009] In some embodiments, in step S4: The rotation of the inner pressure wheel is driven by a power transmission mechanism. Specifically, a fifth servo motor transmits power to the inner pressure wheel through a universal transmission rod and a gear set, so that the spiral convex part contacts and rotates and extrudes the inner wall of the cup to be processed.

[0010] In some embodiments, both ends of the linear groove of the outer pressure plate have a horizontal height difference. In step S4: The predetermined trajectory of the outer pressure plate is a linear path corresponding to the height difference at both ends of the linear groove, and the outer wall of the cup is synchronously extruded through at least two juxtaposed linear grooves.

[0011] In some embodiments, the linear groove of the outer pressure plate is arranged on the convex platform, and other areas of the cup are avoided through an avoidance part, ensuring that the extrusion process only acts on the target thread forming area.

[0012] The beneficial effects of the present application are as follows: By precisely controlling the actions of the inner pressure wheel and the outer pressure plate through the servo control system, the high automation of the thread forming process is realized, manual intervention is reduced, and production efficiency is improved; the equipment can process without tilting the cup body, ensuring the accuracy and consistency of the thread and avoiding errors caused by tilting; the automated process reduces the need for manual operation by workers and reduces the labor intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for description in the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0014] Figure 1 is the overall assembly structure schematic diagram of the present application.

[0015] Figure 2 is the structure schematic diagram of the outer pressure plate and part of the second servo control system of the present application.

[0016] Figure 3 This is another perspective overall assembly structure schematic diagram of the present application.

[0017] Reference numerals: 10. Frame, 20. Cup positioning base, 21. Transmission belt, 30. Inner pressure wheel fixing seat, 40. Outer pressing plate fixing seat, 50. Inner pressure wheel, 51. Spiral convex part, 56. Fifth servo motor, 57. Universal transmission rod, 58. Gear set, 59. Gear shaft rod, 60. Outer pressing plate, 61. Linear groove, 71. First servo motor, 72. Servo electric cylinder, 73. Column, 74. Substrate, 81. Second servo motor, 82. Third servo motor, 83. Fourth servo motor, 84. Mounting bracket, 85. Deflection bracket, 86. Sliding seat, 90. Cup to be processed. Specific embodiments

[0018] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions appears to be contradictory or unable to be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection of the present application.

[0019] Embodiment 1 of the present application: Provide a cup thread forming process, including the following steps: S1. Fix the cup to be processed: Clamp and fix the lower end of the cup to be processed on the cup positioning base, and convey multiple cup positioning bases to the processing station through the transmission belt to ensure that the axis of the cup to be processed is perpendicular to the horizontal plane; S2. Inner pressure wheel positioning: Drive the inner pressure wheel fixing seat to move through the first servo control system, so that the inner pressure wheel extends into the cup mouth of the cup to be processed and fits against the inner wall of the cup; S3. Outer pressing plate positioning: Drive the outer pressing plate fixing seat to move through the second servo control system, so that the starting point of the linear groove on the outer pressing plate is close to the outer wall of the cup to be processed; S4. Synchronous extrusion forming: Drive the inner pressure wheel to rotate, and at the same time control the outer pressing plate to move along a predetermined trajectory, so that the non-equidistant spiral convex part on the outer surface of the inner pressure wheel and the linear groove of the outer pressing plate correspond from the starting point to the end point synchronously, and through the synchronous lifting or offset of the outer pressing plate, the cup to be processed forms non-equidistant threads.

[0020] Among them, in step S2: The first servo control system drives the inner pressure wheel fixing seat to move along the X-axis through a first servo motor, and drives the substrate to lift and lower along the Z-axis through a servo electric cylinder to adjust the longitudinal and transverse positions of the inner pressure wheel.

[0021] Among them, in step S3: The second servo control system drives the deflection frame to deflect around the X-axis through a second servo motor, drives the sliding seat to move along the X-axis through a third servo motor, and drives the outer pressure plate fixing seat to move along the Y-axis through a fourth servo motor to adjust the longitudinal, transverse and deflection angles of the outer pressure plate.

[0022] Among them, in step S4: The rotation of the inner pressure wheel is driven by a power transmission mechanism. Specifically, a fifth servo motor transmits power to the inner pressure wheel through a universal transmission rod and a gear set, so that the spiral convex part contacts and rotates and extrudes the inner wall of the cup to be processed.

[0023] Among them, there is a horizontal height difference at both ends of the linear groove of the outer pressure plate. In step S4: The predetermined trajectory of the outer pressure plate is a linear path corresponding to the height difference at both ends of the linear groove, and the outer wall of the cup is synchronously extruded through at least two linearly arranged linear grooves.

[0024] Among them, the linear groove of the outer pressure plate is arranged on the convex platform and avoids other areas of the cup through an avoidance part to ensure that the extrusion process only acts on the target thread forming area.

[0025] Embodiment 2 of the present application: Refer to Figures 1 to 3 As shown, a cup thread forming device for implementing the above process is provided, which includes the following components.

[0026] Frame 10: As the basic support frame of the entire device.

[0027] Cup positioning base 20: Used to fix the cup 90 to be processed to ensure that its axis is perpendicular to the horizontal plane.

[0028] Inner pressure wheel fixing seat 30: Driven by the first servo control system, it can displace longitudinally and transversely on the frame 10.

[0029] Outer pressure plate fixing seat 40: Driven by the second servo control system, it can displace longitudinally and transversely on the frame 10.

[0030] Inner pressure wheel 50: Arranged on the inner pressure wheel fixing seat 30, driven by a power transmission mechanism to rotate and can extend into the cup mouth of the cup 90 to be processed. The outer surface of it is surrounded by non-equidistant spiral convex parts 51.

[0031] Outer pressure plate 60: Fixed on the outer pressure plate fixing seat 40, a linear groove 61 is provided on one side relative to the cup body 90 to be processed. There is a horizontal height difference at both ends of the linear groove 61. Preferably, at least two of them are arranged in parallel. In addition, the outer pressure plate includes a boss and an avoidance portion formed below the boss, and the linear groove is provided on the boss. The avoidance portion is used to prevent unnecessary interference with the cup body to be processed.

[0032] First servo control system: Comprises a first servo motor 71, a servo electric cylinder 72 and a column 73. The column 73 is installed on the frame 10, the base plate 74 is longitudinally movably installed on the column 73 along the Z-axis, and the inner pressure wheel fixing seat 30 is slidably installed on the base plate 74 and can move along the X-axis to approach or move away from the outer pressure plate 60. The first servo motor 71 drives the inner pressure wheel fixing seat 30 to slide, and the servo electric cylinder 72 drives the base plate 74 to lift and lower.

[0033] Second servo control system: Comprises a second servo motor 81, a third servo motor 82, and a fourth servo motor 83. An installation frame 84 is provided on the frame 10, a deflection frame 85 capable of deflecting around the X-axis is provided on the installation frame 84, a sliding seat 86 capable of moving along the X-axis is slidably installed on the deflection frame 85, and an outer pressure plate fixing seat 40 capable of moving along the Y-axis is slidably installed on the sliding seat 86. The second servo motor 81 drives the deflection frame 85 to deflect, the third servo motor 82 drives the sliding seat 86 to slide, and the fourth servo motor 83 drives the outer pressure plate fixing seat 40 to slide.

[0034] Power transmission mechanism: Comprises a fifth servo motor 56, a universal transmission rod 57, a gear set 58 and a gear shaft rod 59 installed on the gear. The inner pressure wheel 50 is installed on a gear shaft rod 59, the fifth servo motor 56 is installed on the frame 10, the gear set 58 and the gear shaft rod 59 are installed on the inner pressure wheel fixing seat 30, and the universal transmission rod 57 is used to link the gear set 58 and the fifth servo motor 56.

[0035] The working principle and process are as follows.

[0036] Preparation work: Clamp and fix the lower end of the cup body 90 to be processed on the cup body positioning base 20, and arrange a plurality of cup body positioning bases 20 through the transmission belt 21 to achieve continuous production.

[0037] Ensure that the cup body 90 to be processed is in a vertical state relative to the working reference plane, and adjust the position of the cup body positioning base 20 so that the axis of the cup body is perpendicular to the horizontal plane.

[0038] Start processing: Positioning and calibration: Use a sensor to detect the position of the cup body 90 to be processed. After ensuring its correctness, start the first servo control system and the second servo control system.

[0039] Feeding and contacting: The first servo control system controls the movement of the inner pressure wheel fixing seat 30, so that the inner pressure wheel 50 extends into the cup mouth of the cup body 90 to be processed and fits against the inner wall of the cup body; at the same time, the second servo control system controls the movement of the outer pressing plate fixing seat 40, so that the starting point of the linear groove 61 on the outer pressing plate 60 is close to the outer wall of the cup body 90 to be processed.

[0040] Synchronous extrusion forming: Start the power transmission mechanism. The fifth servo motor 56 transmits the rotational force to the inner pressure wheel 50 through the universal drive rod 57 and the gear set 58, causing it to rotate; at the same time, the second servo control system controls the outer pressing plate 60 to move along a predetermined trajectory, so that the spiral convex portion 51 of the inner pressure wheel 50 and the linear groove 61 of the outer pressing plate 60 exactly correspond from the starting point to the end point. During this process, the outer pressing plate 60 is lifted or offset synchronously, so that the cup body 90 to be processed forms non-uniform threads.

[0041] Completion and reset: After the processing is completed, the servo system is reset, the finished cup body 90 is taken out, and preparations are made for the next processing cycle.

[0042] So far, various embodiments of the present application have been described in detail. To avoid obscuring the concept of the present application, some details well 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.

[0043] Finally, it should be noted that the above are only the preferred embodiments of the present application. The foregoing embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present application.

Claims

1. A cup body thread forming process, characterized in that, The following steps are involved: S1. Fix the cup body to be processed: clamp and fix the lower end of the cup body to be processed on the cup body positioning base, and transport multiple cup body positioning bases to the processing station through a transmission belt to ensure that the axial direction of the cup body to be processed is perpendicular to the horizontal plane; S2. Inner pressure wheel positioning: The inner pressure wheel fixed seat is driven by the first servo control system to move so that the inner pressure wheel extends into the mouth of the cup body to be processed and fits with the inner wall of the cup body; S3. Positioning the outer pressure plate: The outer pressure plate fixing seat is driven to move by the second servo control system so that the starting point of the linear groove on the outer pressure plate is close to the outer wall of the cup body to be processed; S4. Synchronous extrusion molding: drive the inner pressure wheel to rotate, and control the outer pressure plate to move along a predetermined trajectory, so that the non-uniform spiral convex part on the outer surface of the inner pressure wheel and the linear groove of the outer pressure plate correspond synchronously from the starting point to the end point, and the non-uniform threads are formed on the cup body to be processed through the synchronous lifting or offset of the outer pressure plate.

2. The cup body thread forming process according to claim 1, wherein, In step S2: The first servo control system drives the inner pressure wheel fixing seat to move along the X-axis through the first servo motor, and drives the base plate to rise and fall along the Z-axis through the servo electric cylinder to adjust the longitudinal and lateral positions of the inner pressure wheel.

3. The cup body thread forming process according to claim 1, characterized in that, In step S3: The second servo control system drives the deflection frame to deflect around the X-axis through the second servo motor, drives the sliding seat to move along the X-axis through the third servo motor, and drives the outer pressure plate fixing seat to move along the Y-axis through the fourth servo motor to adjust the longitudinal, lateral and deflection angle of the outer pressure plate.

4. The cup body thread forming process according to claim 1, characterized in that, In step S4: The rotation of the inner pressing wheel is driven by a power transmission mechanism, specifically, the fifth servo motor transmits power to the inner pressing wheel via a universal transmission rod and a gear set, so that the spiral convex portion contacts the inner wall of the cup body to be processed and rotates and squeezes.

5. The cup body thread forming process according to claim 1, characterized in that, The two ends of the linear groove of the outer pressure plate have a horizontal height difference, in step S4: The predetermined trajectory of the outer pressure plate is a linear path corresponding to the height difference between the two ends of the linear groove, and the outer wall of the cup body is synchronously squeezed by at least two parallel linear grooves.

6. The cup body thread forming process according to claim 5, characterized in that, The linear groove of the outer pressure plate is arranged on the boss and avoids other areas of the cup body through the avoidance portion, ensuring that the extrusion process only acts on the target thread forming area.

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