Semi-automatic bottle finish threading apparatus

Abstract

This invention discloses a semi-automatic bottle neck thread processing device, including a frame, a thread rolling die, an elastic return mechanism, an eccentric wheel, a transmission mechanism, a motor, and a bottle holder. The bottle holder is mounted on the frame and can accommodate horizontal insertion of aluminum bottles. The motor drives the thread rolling die and the eccentric wheel to rotate on the frame simultaneously through the transmission mechanism. During rotation, the eccentric wheel can periodically push the thread rolling die toward the bottle holder by a specified distance through its external protrusion. The elastic return mechanism is mounted on the frame and can pull the thread rolling die back to its original position when the external protrusion leaves the thread rolling die. This device enables convenient loading and unloading, efficient and stable semi-automatic processing of aluminum bottle neck threads.

Description

Technical Field

[0001] This invention relates to the technical field of metal bottle processing, and in particular to the technical field of bottle neck thread processing. Background Technology

[0002] Aluminum packaging containers, with their core advantages of being lightweight, high-strength, corrosion-resistant, and recyclable, are now widely used in all categories of distribution scenarios, including pressure packaging for daily chemicals, sealed storage and transportation of food, dispensing of fine chemical reagents, and packaging of sterile medical supplies. They are a core and essential material in the green and low-carbon packaging system. To ensure that the subsequent sealing caps of aluminum bottles are precisely locked, pressure-resistant, and leak-free, the industry-standardized processing technology requires the integrated molding of a matching sealing thread structure on the outer edge of the aluminum bottle mouth. This establishes the basic assembly conditions for the closed-loop packaging, stacking, storage, transportation, and repeated turnover of aluminum bottles, such as the aluminum packaging bottle with announcement number CN211766903U and the aluminum can bottle mouth thread processing technology with publication number CN109746342A.

[0003] At present, the above-mentioned cold rolling forming process for aluminum bottle neck threads is mostly adapted to the use of split positioning clamping and matching integrated rolling forming equipment. The core operation logic follows the step-by-step closed-loop process of "pre-clamping and locking - precise centering and thread rolling - post-clamping and unloading". Typical standardized operation equipment can refer to the traditional integrated aluminum bottle neck special thread precision machining equipment with announcement number CN220278493U. On the one hand, before the formal cold rolling thread processing of the bottle neck is carried out, the worker must rely on the matching special mechanical clamping fixture (first thread rod 10, second thread rod 12 and arc-shaped clamping ring 13, etc.) to lock the aluminum bottle. On the other hand, when the thread cold rolling operation is completed, the worker is required to manually untie the original mechanical clamping fixture in the reverse direction.

[0004] Based on the fixed operation mode of the traditional dedicated thread processing equipment, the workshop has long faced the challenge of adapting to the current high-speed, low-cost, and lightweight operational mass production requirements for improving quality and efficiency. Specifically, firstly, all aluminum bottles to be processed rely on manual operation of clamping fixtures one by one. Within the complete processing cycle of a single piece, a clamping, alignment, and locking operation and an unlocking, loosening, and unloading operation are forcibly superimposed (the double manual intervention operation steps are redundant and complicated, significantly lengthening the overall time for thread forming of a single aluminum bottle, resulting in a significant reduction in the effective pure processing ratio of the equipment and the overall workstation operation speed). First, the work involves frequent manual alignment, locking, and unlocking operations at all workstations. The entire process relies on visual calibration and manual control of clamping force, which easily leads to human error such as clamping alignment deviation, uneven locking force, and misalignment of the release sequence. Second, the long-term high-frequency reciprocating locking and rigid extrusion alignment of mechanical fixtures can cause wear and tear on the fixture body, such as elastic fatigue, wear on positioning points, and deformation of buckles. The frequent replacement and maintenance of tooling parts is also high (increasing downtime for equipment maintenance, further reducing the effective production time in the workshop, and dragging down the overall efficiency of the entire aluminum bottle pre-forming production line).

[0005] In summary, there is an urgent need in the industry to develop a dedicated processing device for aluminum bottle neck threads that eliminates the need for traditional separate clamping fixtures (eliminating redundant manual high-frequency clamping and unlocking processes); it can efficiently complete high-precision cold rolling forming of bottle neck threads without repeated fixture alignment and locking, thereby avoiding the hidden dangers of manual clamping interference from the structural source, reducing labor and energy consumption costs, accelerating mass production, and meeting the practical needs of large-scale, lightweight, and efficient mass production of all sizes of conventional aluminum bottles. Summary of the Invention

[0006] The purpose of this invention is to solve the problems in the prior art and to propose a semi-automatic bottle neck thread processing device that can realize convenient, efficient and stable semi-automatic processing of aluminum bottle neck threads.

[0007] To achieve the above objectives, the present invention proposes a semi-automatic bottle neck thread processing device, comprising a frame, a thread rolling die, an elastic return mechanism, an eccentric wheel, a transmission mechanism, a motor, and a bottle holder. The bottle holder is mounted on the frame and can accommodate horizontal insertion of aluminum bottles. The motor drives the thread rolling die and the eccentric wheel to rotate on the frame simultaneously via the transmission mechanism. During rotation, the eccentric wheel can periodically push the thread rolling die toward the bottle holder a specified distance via its external protrusion. The elastic return mechanism is mounted on the frame and can pull the thread rolling die back to its original position when the external protrusion leaves the thread rolling die.

[0008] Preferably, the thread rolling die and the eccentric wheel each have a horizontal die rod and a wheel rod that pass through the frame. Outside the die rod, there is a rod guide post that passes through the frame along the first vertical groove. The elastic return mechanism has an elastic element disposed between the rod guide post and the frame. The elastic element can deform synchronously and store elastic force during the outward pushing of the thread rolling die by the outward protrusion.

[0009] Preferably, the elastic element is a vertically arranged straight spring, and the elastic return mechanism adjusts the initial length of the straight spring when it is not affected by the outward protrusion through the adjustment component.

[0010] Preferably, the adjustment assembly includes a base block and a screw rod. The screw rod is threaded into the frame and its end is rotatably connected to the base block. A block guide post is provided outside the base block, extending out of the frame along a second vertical groove. The two ends of the straight spring are fixed to the rod guide post and the block guide post, respectively.

[0011] Preferably, the bottle holder has a horizontally extending seat rod through the frame, and the transmission mechanism includes a first gear, a second gear, and a third gear. The first gear, the second gear, and the third gear are coaxially mounted on the wheel rod, the mold rod, and the seat rod, respectively. The first gear, the second gear, or the third gear is driven to rotate by a motor.

[0012] Preferably, the transmission mechanism further includes a first sprocket, a second sprocket, a guide chain, a driven wheel, a driving wheel, and a transmission belt. The third gear is coaxially linked with the first sprocket, the second sprocket is coaxially linked with the driven wheel, the driving wheel is fixed at the output shaft of the motor, the guide chain is fitted outside both the first and second sprockets, and the transmission belt is fitted outside both the driven wheel and the driving wheel.

[0013] Preferably, the bottle holder allows the aluminum bottle to be inserted through a post with a conical head, and the bottle holder is also provided with a guide plate facing the conical head, the guide plate having a plate channel through which the aluminum bottle can pass horizontally.

[0014] Preferably, the surface of the plate channel is provided with ball bearings.

[0015] The beneficial effects of this invention are: 1) Fixture-free design simplifies loading and unloading processes and significantly improves processing efficiency: This invention completely eliminates the special clamping fixtures required for traditional aluminum bottle neck thread processing equipment. It adopts a horizontal direct-fitting positioning bottle seat structure. Workers only need to put the aluminum bottle directly into the bottle seat to complete the positioning. After processing, the bottle can be directly pulled out for unloading. There is no need to perform secondary operations such as clamping and unlocking throughout the process. Structurally, it eliminates the cumbersome steps of traditional equipment that require two clamping operations for a single workpiece (workers only need to complete two basic actions of putting on and taking off the bottle, and can quickly get started without professional training). It greatly shortens the processing cycle of a single piece, effectively improves the effective operating rate of the equipment and the overall production cycle of the workstation. It is especially suitable for the continuous batch production of aluminum bottles, which can effectively reduce the intensity of manual operation and improve the efficiency of production line flow. 2) Single motor synchronous drive, simple structure, reliable linkage and low failure rate: This invention uses a single motor to drive the bottle holder, thread rolling die and eccentric wheel to rotate synchronously through a transmission mechanism. It does not require multiple power sources, complex electrical control systems or independent lifting drive units. The overall mechanical structure is more compact and simple, the transmission path is clear, and the speed and phase of each moving part are strictly matched. There will be no problems such as asynchrony or misalignment. It effectively reduces the difficulty of equipment manufacturing, assembly and later maintenance costs. The equipment has higher operating stability and is less prone to transmission failure after long-term use, which can effectively extend the service life of the equipment. 3) Elastic return and adjustable structure, strong adaptability and convenient debugging: The present invention uses an elastic element to realize the automatic reset of the thread rolling die, and is equipped with an adjustment structure composed of a screw and a base block. The initial tension of the elastic element and the reset force of the thread rolling die can be flexibly adjusted to adapt to the processing needs of aluminum bottles with different wall thicknesses and different thread specifications. There is no need to replace the mold as a whole or make major adjustments to the frame. The debugging process is simple and intuitive. Workers can quickly complete the specification switching and parameter calibration, improve the equipment's adaptability to multi-variety and small-batch production, and reduce changeover costs and downtime. 4) Guiding and friction-reducing structure for smooth loading and unloading and no scratches on the workpiece: This invention makes it easier to align horizontal insertion by setting a cone-headed insert and a ball-bearing guide plate at the bottle seat position. The guide plate and ball structure can also significantly reduce the frictional resistance between the outer wall of the aluminum bottle and the tooling, making the pushing and pulling of the aluminum bottle smoother and less labor-intensive. At the same time, it avoids appearance defects such as scratches, bumps, and deformation on the bottle mouth or outer wall of the bottle body, and improves the finished product qualification rate. It is especially suitable for the processing of aluminum packaging containers with high surface requirements.

[0016] The features and advantages of the present invention will be described in detail through embodiments and in conjunction with the accompanying drawings. Attached Figure Description

[0017] Figure 1 This is a front view of the semi-automatic bottle neck thread processing device of the present invention; Figure 2 This is a schematic diagram of the transmission of the semi-automatic bottle neck thread processing device of the present invention; Figure 3 This is a schematic diagram of the semi-automatic bottle neck thread processing device of the present invention for bottle loading; Figure 4 This is a schematic diagram showing the installation position of the elastic return mechanism of the semi-automatic bottle neck thread processing device of the present invention; Figure 5 This is a right view of the guide plate of the semi-automatic bottle neck thread processing device of the present invention.

[0018] In the diagram: 1-Frame, 11-First vertical groove, 12-Second vertical groove, 2-Thread rolling die, 21-Die rod, 22-Rod guide post, 3-Elastic return mechanism, 31-Elastic element, 32-Base block, 321-Block guide post, 33-Screw, 4-Eccentric wheel, 41-Wheel rod, 5-Transmission mechanism, 51-First gear, 52-Second gear, 53-Third gear, 54-First sprocket, 55-Second sprocket, 56-Guide chain, 57-Passive wheel, 58-Driving wheel, 59-Transmission belt, 6-Motor, 7-Bottle holder, 71-Seat rod, 72-Guide plate, 721-Ball bearing, 73-Conical head, 8-Aluminum bottle. Detailed Implementation

[0019] See Figures 1 to 5 This invention relates to a semi-automatic bottle neck thread processing device, comprising a frame 1, a thread rolling die 2, an elastic return mechanism 3, an eccentric wheel 4, a transmission mechanism 5, a motor 6, and a bottle holder 7. The bottle holder 7 is mounted on the frame 1 and allows an aluminum bottle 8 to be horizontally inserted. The motor 6 drives the thread rolling die 2 and the eccentric wheel 4 to rotate on the frame 1 simultaneously via the transmission mechanism 5. During rotation, the eccentric wheel 4 can periodically push the thread rolling die 2 toward the bottle holder 7 by its outward protrusion (this movement can be achieved by adjusting the initial installation distance between the thread rolling die 2 and the eccentric wheel 4 or by replacing the eccentric wheel 4 with one of different sizes). The eccentric wheel 4 on the protrusion changes the moving distance of the thread rolling die 2 during the working process, thereby realizing the thread rolling depth of the thread rolling die 2 on the aluminum bottle 8. The elastic return mechanism 3 is installed on the frame 1 and can pull the thread rolling die 2 back to its original position when the outer protrusion leaves the thread rolling die 2. With this design, the whole machine only needs to control the start, stop and speed of a single motor 6. There is no need to perform complex programming, parameter matching and linkage debugging of the lifting and rotation systems. Operators can get started quickly and the calibration difficulty is low. It can effectively reduce the threshold for equipment use and training costs, and improve the efficiency of on-site production management.

[0020] The thread rolling die 2 and the eccentric wheel 4 respectively have a horizontal die rod 21 and a wheel rod 41 that pass through the frame 1. Outside the die rod 21, there is a rod guide post 22 that passes through the frame 1 along the first vertical groove 11. The elastic return mechanism 3 has an elastic element 31 disposed between the rod guide post 22 and the frame 1. The elastic element 31 can deform synchronously and store elastic force during the outward pushing of the thread rolling die 2 by the outward convex part.

[0021] The elastic element 31 is a vertically arranged straight spring, and the elastic return mechanism 3 adjusts the initial length of the straight spring when it is not affected by the outward protrusion through the adjustment component.

[0022] The adjustment assembly includes a base block 32 and a screw 33. The screw 33 is screwed into the frame 1 and its end is rotatably connected to the base block 32. A block guide post 321 is provided outside the base block 32, extending out of the frame 1 along the second vertical groove 12. The two ends of the straight spring are fixed to the rod guide post 22 and the block guide post 321, respectively.

[0023] The bottle holder 7 has a horizontally penetrating seat rod 71 through the frame 1. The transmission mechanism 5 includes a first gear 51, a second gear 52, and a third gear 53. The first gear 51, the second gear 52, and the third gear 53 are coaxially mounted on the outside of the wheel rod 41, the mold rod 21, and the seat rod 71, respectively. The first gear 51, the second gear 52, or the third gear 53 is driven to rotate by the motor 6.

[0024] The transmission mechanism 5 further includes a first sprocket 54, a second sprocket 55, a guide chain 56, a driven wheel 57, a driving wheel 58, and a transmission belt 59. The third gear 53 is coaxially linked with the first sprocket 54, the second sprocket 55 is coaxially linked with the driven wheel 57, the driving wheel 58 is fixed at the output shaft of the motor 6, the guide chain 56 is fitted over both the first sprocket 54 and the second sprocket 55, and the transmission belt 59 is fitted over both the driven wheel 57 and the driving wheel 58.

[0025] The bottle holder 7 allows the aluminum bottle 8 to be inserted through a post with a conical head 73. The bottle holder 7 is also provided with a guide plate 72 facing the conical head 73. The guide plate 72 has a plate channel through which the aluminum bottle 8 can pass horizontally.

[0026] The plate channel surface is provided with ball bearings 721, thereby reducing the friction between the aluminum bottle 8 and the guide plate 72.

[0027] The working process of this invention: In this embodiment, the thread rolling die 2 is located below the eccentric wheel 4, the bottle holder 7 is located below the thread rolling die 2, and the screw 33 is located at the top of the frame 1.

[0028] After the motor 6 starts, on the one hand, the transmission mechanism 5 synchronously drives the thread rolling die 2, the eccentric wheel 4 and the bottle holder 7 to rotate. On the other hand, the eccentric wheel 4 uses its own protrusion to periodically push the thread rolling die 2 downwards towards the bottle holder 7 and perform cold rolling thread forming on the aluminum bottle 8 (the elastic element 31 will also be stretched and store elastic force). During this period, whenever the protrusion moves away from the thread rolling die 2, the elastic element 31 will pull the thread rolling die 2 back to its original position through elastic force. In this process, the worker needs to push the aluminum bottle 8 along the plate channel until its bottle mouth is inserted outside the insertion post before the thread rolling die 2 approaches the bottle holder 7, and then pull the thread-rolled aluminum bottle 8 out of the bottle holder 7 when the thread rolling die 2 leaves the bottle holder 7.

[0029] In addition, before operation, the tension of the elastic element 31 can be changed by adjusting the depth of the screw 33 into the frame 1.

[0030] The above embodiments are illustrative of the present invention and are not intended to limit the present invention. Any simple modifications to the present invention are within the scope of protection of the present invention.

Claims

1. A semi-automatic bottle neck thread processing device, characterized in that: The device includes a frame (1), a thread rolling die (2), an elastic return mechanism (3), an eccentric wheel (4), a transmission mechanism (5), a motor (6), and a bottle holder (7). The bottle holder (7) is mounted on the frame (1) and allows aluminum bottles (8) to be inserted horizontally. The motor (6) drives the thread rolling die (2) and the eccentric wheel (4) to rotate on the frame (1) simultaneously through the transmission mechanism (5). The eccentric wheel (4) can periodically push the thread rolling die (2) toward the bottle holder (7) by its external protrusion during rotation. The elastic return mechanism (3) is mounted on the frame (1) and can pull the thread rolling die (2) back to its original position when the external protrusion leaves the thread rolling die (2).

2. The semi-automatic bottle neck thread processing device as described in claim 1, characterized in that: The thread rolling die (2) and the eccentric wheel (4) respectively have a horizontal through-frame (1) die rod (21) and wheel rod (41). The die rod (21) is provided with a rod guide post (22) that passes through the frame (1) along the first vertical groove (11). The elastic return mechanism (3) has an elastic element (31) disposed between the rod guide post (22) and the frame (1). The elastic element (31) can deform synchronously and store elastic force during the outward pushing of the thread rolling die (2) by the outward convex part.

3. The semi-automatic bottle neck thread processing device as described in claim 2, characterized in that: The elastic element (31) is a vertically arranged straight spring, and the elastic return mechanism (3) adjusts the initial length of the straight spring when it is not affected by the outward protrusion through the adjustment component.

4. The semi-automatic bottle neck thread processing device as described in claim 3, characterized in that: The adjustment assembly includes a base block (32) and a screw (33). The screw (33) is screwed into the frame (1) and its end is rotatably connected to the base block (32). A block guide post (321) is provided outside the base block (32) and extends out of the frame (1) along the second vertical groove (12). The two ends of the straight spring are fixed to the rod guide post (22) and the block guide post (321) respectively.

5. The semi-automatic bottle neck thread processing device as described in any one of claims 2 to 4, characterized in that: The bottle holder (7) has a horizontal through-frame (1) seat rod (71), and the transmission mechanism (5) includes a first gear (51), a second gear (52) and a third gear (53). The first gear (51), the second gear (52) and the third gear (53) are coaxially mounted on the outside of the wheel rod (41), the mold rod (21) and the seat rod (71), respectively. The first gear (51), the second gear (52) or the third gear (53) is driven to rotate by a motor (6).

6. The semi-automatic bottle neck thread processing device as described in claim 5, characterized in that: The transmission mechanism (5) further includes a first sprocket (54), a second sprocket (55), a guide chain (56), a driven wheel (57), a driving wheel (58), and a transmission belt (59). The third gear (53) is coaxially linked with the first sprocket (54), the second sprocket (55) is coaxially linked with the driven wheel (57), the driving wheel (58) is fixed at the output shaft of the motor (6), the guide chain (56) is simultaneously fitted outside the first sprocket (54) and the second sprocket (55), and the transmission belt (59) is simultaneously fitted outside the driven wheel (57) and the driving wheel (58).

7. The semi-automatic bottle neck thread processing device as described in claim 1, characterized in that: The bottle holder (7) allows the aluminum bottle (8) to be inserted through a post with a conical head (73). The bottle holder (7) is also provided with a guide plate (72) facing the conical head (73). The guide plate (72) has a plate channel through which the aluminum bottle (8) can pass horizontally.

8. The semi-automatic bottle neck thread processing device as described in claim 7, characterized in that: The plate channel surface is provided with ball bearings (721).

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