Bottle cap assembling device for long-rod gas cylinder

Abstract

The utility model provides a long-rod gas cylinder cap assembling device, which relates to the technical field of gas container manufacturing equipment, and comprises a cylinder body conveying belt, a bottle cap conveying belt, a finished product conveying belt and a pressing device, the pressing device comprises a fixing frame, a pressing rod vertically and downwards arranged on the fixing frame, and a rotating shaft vertically arranged on the fixing frame, the star wheel is fixedly mounted on the rotating shaft; the star wheel is provided with a plurality of limiting grooves, the lower half parts of the limiting grooves are bottle body limiting parts, and the upper half parts of the limiting grooves are bottle cap limiting parts; the molded surface of the bottle body limiting part is matched with the molded surface of the upper end of the bottle body, and the molded surface of the bottle cap limiting part is matched with the molded surface of the side face of the bottle cap. The bottle body conveying belt, the bottle cap conveying belt, the pressing rod and the finished product conveying belt correspond to different limiting grooves in the rotating direction of the star wheel. The limiting grooves matched with the molded surfaces of the bottle body and the bottle cap are formed in the star wheel, it is guaranteed that the bottle body and the bottle cap are coaxial in the assembling process, and the assembling efficiency and quality are improved.

Description

Technical Field

[0001] This utility model relates to the technical field of gas container manufacturing equipment, specifically to a long rod gas cylinder cap assembly device. Background Technology

[0002] Gas cylinders are pressure vessels widely used in industry and daily life, and their sealing performance directly affects safety. Currently, most gas cylinder valves on the market are standard-sized metal valves, which are typically connected to the cylinder body by mechanical compression. To achieve automated compression of gas cylinder valves, various capping machines have been developed in the industry.

[0003] Existing capping machines mainly consist of a valve feeding mechanism, a bottle conveying mechanism, and a pressing mechanism. The valve feeding mechanism typically uses a vibratory feeder to shape the valve and then transport it to the designated position. The bottle conveying mechanism uses a conveyor belt or turntable to transport the bottle to the pressing station. The pressing mechanism uses a cylinder or hydraulic cylinder to drive the pressing head downwards, pressing the valve into the bottle neck to achieve a sealed connection. This equipment structure can meet the pressing requirements of standard metal valves.

[0004] However, existing capping machines have significant shortcomings for special products such as long-rod gas cylinders that use irregularly shaped plastic valves. First, the special shape of the irregularly shaped plastic valves makes it difficult to shape and transport them using conventional vibratory feeders. Second, the assembly of the irregularly shaped valves with the cylinder body requires higher positioning accuracy, and existing conveying mechanisms cannot guarantee the coaxiality requirements between the valve and the cylinder body. Utility Model Content

[0005] The purpose of this utility model is to provide a long rod gas cylinder cap assembly device, which can realize the precise assembly and pressing of the long rod gas cylinder body and cap, and realize the automated assembly of long rod gas cylinders.

[0006] To achieve the above objectives, this utility model employs the following technical solution:

[0007] A long rod gas cylinder cap assembly device includes a bottle body conveyor belt, a cap conveyor belt, a finished product conveyor belt, and a pressing device. The pressing device includes a fixed frame, a pressure rod vertically downward mounted on the fixed frame, a rotating shaft vertically mounted on the fixed frame, and a star wheel fixedly mounted on the rotating shaft.

[0008] The star wheel is provided with multiple limiting grooves. The lower half of the limiting groove is the bottle body limiting part, and the upper half of the limiting groove is the bottle cap limiting part. The shape of the bottle body limiting part matches the shape of the upper part of the bottle body, and the shape of the bottle cap limiting part matches the side shape of the bottle cap.

[0009] The bottle body conveyor belt, bottle cap conveyor belt, pressure bar, and finished product conveyor belt each correspond to different limiting grooves along the rotation direction of the star wheel.

[0010] Furthermore: the star wheel is divided into an upper star wheel and a lower star wheel, the bottle body limiting part is located on the lower star wheel, and the bottle cap limiting part is located on the upper star wheel.

[0011] Furthermore, the bottle cap conveyor belt includes a frame-shaped slide composed of multiple parallel steel bars, the cross-section of which matches the outer surface of the bottle cap.

[0012] Furthermore, the steel bars are fixedly connected to each other by connectors.

[0013] Furthermore, a pressure head is installed at the lower end of the pressure rod, and a soft pad is provided at the lower end of the pressure head. By providing a soft pad at the lower end of the pressure head, the plastic bottle cap can be buffered and protected during the pressing process, avoiding excessive pressure that could cause deformation or damage to the bottle cap, thereby ensuring assembly quality.

[0014] Furthermore, the pressing device also includes a motor that drives the rotating shaft.

[0015] Furthermore, the pressing device also includes a cylinder that drives the pressing rod.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] I. This device sets a limiting groove on the star wheel and divides the limiting groove into upper and lower limiting parts, so that the bottle body and bottle cap respectively fit the surface of the corresponding limiting part, thereby ensuring that the bottle body and bottle cap always remain coaxial during the assembly process, thus facilitating automated assembly.

[0018] Second, a frame-shaped slide composed of multiple parallel steel bars is used to transport bottle caps. The cross-section of the frame-shaped slide fits the outer surface of the bottle cap, allowing the bottle cap to be transported by its own weight. At the same time, it ensures the stability of the bottle cap during transportation, preventing the bottle cap from flipping or shifting during transportation, thus improving the transportation efficiency and reliability of irregularly shaped plastic valves. Attached Figure Description

[0019] Figure 1 This is a schematic front view of the present invention;

[0020] Figure 2 for Figure 1 A schematic cross-sectional view along the AA direction;

[0021] Figure 3 This is a schematic cross-sectional view of a certain point on a frame-type slide rail.

[0022] In the picture:

[0023] 1. Bottle body conveyor belt; 2. Bottle cap conveyor belt; 2.1 Steel bar; 2.2 Connector; 3. Finished product conveyor belt; 4. Pressing device; 4.1 Fixing frame; 4.2 Pressure bar; 4.21 Pressure head; 4.22 Soft pad; 4.3 Rotating shaft; 4.4 Upper star wheel; 4.41 Bottle cap limiting part; 4.5 Lower star wheel; 4.51 Bottle body limiting part; 5. Bottle body; 6. Bottle cap; 6.1 Long bar; 7. Clearance area. Detailed Implementation

[0024] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0025] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] like Figure 1 As shown: The long rod gas cylinder cap assembly device provided by this utility model includes a bottle body conveyor belt 1, a cap conveyor belt 2, a finished product conveyor belt 3, and a pressing device 4. The pressing device 4 includes a fixed frame 4.1, a pressure rod 4.2 vertically arranged on the fixed frame 4.1, a rotating shaft 4.3 vertically arranged on the fixed frame 4.1, and a star wheel fixedly installed on the rotating shaft 4.3.

[0027] The star wheel consists of an upper star wheel 4.4 and a lower star wheel 4.5, used for positioning and conveying the bottle cap 6 and bottle body 5, respectively. The star wheel has multiple positioning grooves; the upper half of each groove is a bottle cap positioning part 4.41, and the lower half is a bottle body positioning part 4.51. The surface of the bottle body positioning part 4.51 matches the surface of the upper end of the bottle body 5, and the surface of the bottle cap positioning part 4.41 matches the side surface of the bottle cap 6, thus ensuring that the bottle body 5 and bottle cap 6 remain coaxial during assembly.

[0028] like Figure 3As shown, the bottle cap conveyor belt 2 consists of a frame-shaped slide composed of multiple parallel steel bars 2.1. The steel bars 2.1 are fixedly connected by connectors 2.2. A connector 2.2 should be installed at intervals along the bottle cap conveyor belt 2 to prevent deformation of the frame-shaped slide under external forces. More preferably, the connector 2.2 is a metal strip welded to the outer periphery of the steel bars 2.1. In principle, it should not interfere with the internal space of the frame-shaped slide. Furthermore, two steel bars 2.1 are selected from several steel bars 2.1 with the same cross-section, and the space between the two steel bars 2.1 is designated as a clearance area 7 (generally the lower left or lower right area). The connector 2.2 is not allowed to close this clearance area 7. This clearance area 7 is used to reserve a conveying position for the long rods installed on the bottle cap 6. Specifically, the cross-section of the frame-shaped slide matches the outer surface of the bottle cap 6 to restrict the conveying posture of the bottle cap 6, allowing the bottle cap 6 to slide stably within the frame-shaped slide. Optionally, the frame-shaped slide is inclined, thereby utilizing the weight of the bottle cap 6 for conveying. At the same time, since the frame-shaped slide fits the outer surface of the bottle cap 6, it can effectively prevent the bottle cap 6 from flipping or shifting during the conveying process.

[0029] In one example, the pressing device 4 also includes a motor and a cylinder. The motor drives the rotating shaft 4.3 to rotate the star wheel, and the cylinder drives the pressing rod 4.2 to move up and down. A pressing head 4.21 is installed at the lower end of the pressing rod 4.2, and a soft pad 4.22 is provided at the lower end of the pressing head 4.21 to cushion and protect the plastic bottle cap during the pressing process.

[0030] like Figure 2 As shown, the bottle body conveyor belt 1, the cap conveyor belt 2, the pressure bar 4.2, and the finished product conveyor belt 3 correspond to different limiting grooves along the rotation direction of the star wheel. In actual operation, the bottle body 5 is conveyed by the bottle body conveyor belt 1 to the bottle body limiting part 4.51 of the lower star wheel 4.5, and the cap 6 is conveyed by the cap conveyor belt 2 to the cap limiting part 4.41 of the upper star wheel 4.4. When the bottle body 5 rotates from the bottle body limiting part 4.51 to the cap limiting part 4.41, the cap 6 falls into the area of ​​the cap limiting part 4.41 and simultaneously onto the bottle body 5, thus completing the initial assembly of the bottle body 5 and the cap 6. When the bottle body 5 and the cap 6 rotate under the drive of the star wheel to directly below the pressure bar 4.2, the cylinder drives the pressure bar 4.2 downwards, pressing the cap 6 into the bottle body 5, completing the assembly. After assembly, the long rod cylinder continues to rotate with the star wheel to the finished product conveyor belt 3, where it is conveyed away.

[0031] In this embodiment, the bottle cap 6 is an irregularly shaped plastic valve. The frame-shaped slide and star wheel work together to ensure the stability of the irregularly shaped plastic valve during transport and assembly. Simultaneously, by placing a soft gasket 4.22 at the lower end of the pressure head 4.21, damage to the plastic valve during the pressing process can be avoided. This device has a simple structure and reasonable design, enabling automated assembly of long-stem gas cylinders.

[0032] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent transformations or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A long rod cylinder cap assembly device, comprising a cylinder body conveying belt, a cap conveying belt, a finished product conveying belt, and a pressing device, characterized in that: The pressing device comprises a fixed frame, a pressing rod vertically downward arranged on the fixed frame, a rotating shaft vertically arranged on the fixed frame, and a star wheel fixedly arranged on the rotating shaft; The star wheel is provided with a plurality of limiting grooves, the lower half of the limiting groove is a bottle body limiting part, and the upper half of the limiting groove is a bottle cap limiting part; the profile of the bottle body limiting part is matched with the profile of the upper end of the bottle body, and the profile of the bottle cap limiting part is matched with the profile of the side surface of the bottle cap; The bottle body conveying belt, the bottle cap conveying belt, the pressing rod and the finished product conveying belt correspond to different limiting grooves in the rotating direction of the star wheel.

2. The long rod gas cylinder cap assembly device according to claim 1, wherein: The star wheel is divided into an upper star wheel and a lower star wheel, the bottle body limiting part is located in the lower star wheel, and the bottle cap limiting part is located in the upper star wheel.

3. The long rod gas cylinder cap assembly device according to claim 1, wherein: The bottle body conveying belt comprises a plurality of parallel steel bars arranged in a frame type slide, and the cross section of the frame type slide is matched with the profile of the bottle cap.

4. The long rod gas cylinder cap assembly device according to claim 3, characterized in that: The steel bars are fixedly connected through connecting pieces.

5. The long pole gas cylinder cap assembly device according to claim 1, characterized in that: The lower end of the pressing rod is provided with a pressing head, and the lower end of the pressing head is provided with a soft gasket.

6. The long pole gas cylinder cap assembly device according to claim 1, characterized in that: The pressing device further comprises a motor, and the motor drives the rotating shaft.

7. The long pole gas cylinder cap assembly device according to claim 1, characterized in that: The pressing device further comprises a pneumatic cylinder, and the pneumatic cylinder drives the pressing rod.

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