Method for installing sealing cover on pipe nozzle of standing pouch

Abstract

The invention discloses a method for mounting sealing covers on a nozzle of a self-standing pouch. The method is characterized by sequentially comprising the following steps: (1) sequentially conveying the sealing covers; (2) a plurality of sealing covers are sequentially received and conveyed to a multi-sealing-cover linear arrangement area distributed along a straight line; (3) synchronously pushing all the sealing covers on the multi-sealing-cover linear arrangement area to a multi-sealing-cover arc arrangement area which is distributed along an arc; (4) all the sealing covers located on the multi-sealing-cover arc arrangement area are synchronously grabbed and arranged on all the pipe nozzles, arranged on the positioning rods in a sleeving mode, of the rotating disc type pipe nozzle carrying device located on the installation station in a sleeving mode in a sleeving mode; and (5) respectively tightening all the sealing covers which are arranged on the pipe nozzles in a sleeving manner and are positioned on the mounting station. Compared with the prior art, the device has the beneficial effects that the working efficiency is greatly improved, and equipment is saved.

Description

Technical Field

[0001] This invention relates to a method for installing a sealing cap onto the nozzle of a stand-up pouch. Background Technology

[0002] For some stand-up pouches, where the material is granular solid, it is difficult to fill the material through the nozzle. Therefore, the nozzle and sealing cap are usually assembled into a stand-up pouch cap, which is then installed on the opening at the top of the packaging bag. The bottom of the packaging bag is unsealed and has an opening for filling. Thus, the semi-finished stand-up pouch with the bottom unsealed is filled through the bottom opening. Finally, the bottom opening is sealed to obtain the finished stand-up pouch packaging product.

[0003] In the aforementioned processing method, the stand-up pouch tube cap is a key component. The traditional processing method involves using different injection molding machines to obtain sealing caps and nozzles separately. Then, a large number of sealing caps and nozzles are individually fed out and inspected using vibratory feeders, and qualified products are collected. These are then transported to the assembly line by vehicles. Next, the nozzles and sealing caps are poured into different vibratory feeders and sequentially fed out and inspected. Then, a tube-hanging method (using vertically upright positioning rods inserted into the nozzles from bottom to top) is used to hang the nozzles onto the positioning rods located on the edge of an intermittent rotating turntable. Next, a similar cap-hanging method (using nozzles fitted onto vertically upright positioning rods inserted into the sealing caps from bottom to top) is used to fit the sealing caps onto the nozzles fitted onto the positioning rods located on the edge of the intermittent rotating turntable. Finally, a cap-tightening device is used to tighten the sealing caps, obtaining the finished stand-up pouch tube caps. After another inspection, qualified finished stand-up pouch tube caps are collected.

[0004] However, the disadvantages of this traditional processing method are: 1. Due to the defects in the existing method of putting the sealing cap on the nozzle, both the sealing cap and the nozzle are prone to wear or damage during the process of hanging them on the nozzle (especially the internal and external threads that need to be matched), resulting in a high scrap rate of the self-standing bag nozzle cap; 2. The processing steps are numerous and unreasonable. The manufacturing and assembly of the sealing cap and nozzle are completed on different production lines, which occupies a lot of space, has low work efficiency, and low energy utilization.

[0005] Therefore, the installation method for placing the sealing cap onto the nozzle needs to be improved to avoid collisions during placement. However, if a general-purpose robotic arm is used to mimic the human action of grasping the sealing cap and placing it onto the nozzle (referred to as the cap-grabbing and cap-placing action), this method is not only inefficient but also expensive, thus requiring improvement. Summary of the Invention

[0006] The purpose of this invention is to provide a method for installing sealing caps onto the nozzles of stand-up pouches. This method allows for the rapid installation and tightening of multiple sealing caps onto the nozzles. The technical solution adopted is as follows: A method for installing a sealing cap onto the nozzle of a stand-up pouch, characterized by comprising the following steps in sequence: (1) Sequentially deliver the sealing caps; (2) Receive multiple sealing caps in sequence and deliver them to the linearly arranged area of ​​multiple sealing caps; (3) Simultaneously push all the sealing caps located on the linear arrangement area of ​​the multi-sealing caps to the arc arrangement area of ​​the multi-sealing caps distributed along the arc; (4) Simultaneously grab all the sealing caps located in the arc arrangement area of ​​the multi-sealing cap and put them on all the nozzles on the positioning rod of the rotary nozzle carrying device located at the installation station; (5) Tighten all the sealing caps that are fitted onto the nozzles at the installation station.

[0007] A preferred embodiment is that the equipment used in the method includes a frame and a rotary nozzle carrying device mounted on the frame. The rotary nozzle carrying device has a turntable that rotates intermittently. Multiple positioning rods for positioning the nozzles of stand-up pouches are installed on the edge of the turntable. The frame is provided with a linear arrangement area for multiple sealing caps, an arc arrangement area for multiple sealing caps, and an installation station.

[0008] In a preferred embodiment, the arc arrangement area of ​​the multiple sealing caps is identical to the arc of the positioning rods formed by connecting all the positioning rods located at the installation position, and the arc arrangement area of ​​the multiple sealing caps and the arc of the positioning rods are parallel to each other.

[0009] In a preferred embodiment, the number of sealing caps in the linear arrangement area of ​​the multiple sealing caps, the number of sealing caps in the arc arrangement area of ​​the multiple sealing caps, and the number of positioning rods located at the installation position are all the same.

[0010] In a preferred embodiment, step (1) involves using a vibratory feeder to transport the sealing cap through a conveying channel.

[0011] A better solution is that, in step (1), the sealing cover is inspected during the conveying process, and if a defect is found, the sealing cover is rejected at the outlet of the conveying channel.

[0012] In a preferred embodiment, step (2) involves using a robotic arm to deliver the sealing cap to the area where multiple sealing caps are arranged in a straight line.

[0013] In a preferred embodiment, step (3) involves using one or more robotic arms to grab the sealing cap, raise the sealing cap and move it above the nozzle, then lower the sealing cap and place it onto the corresponding nozzle.

[0014] The beneficial effects of this invention compared to the prior art are that, due to the improvement of the installation method of the sealing caps, multiple sealing caps are first sent to the linear arrangement area of ​​multiple sealing caps distributed in a straight line, then these sealing caps are sent to the arc arrangement area of ​​multiple sealing caps distributed in an arc, and then these sealing caps are simultaneously picked up and placed on all the nozzles sleeved on the positioning rods of the rotary nozzle carrying device located at the installation station, and finally these sealing caps are tightened. Therefore, the work efficiency is greatly improved and equipment is saved. Attached Figure Description

[0015] Figure 1 This is a top view of the device used in one embodiment of the present invention; Figure 2 yes Figure 1 A schematic diagram of the multi-sealing cap arc arrangement area and the positioning rod located at the installation position in the embodiment shown; Figure 3 yes Figure 1 A top view of multiple cap-screwing devices and a positioning rod located at the installation station in the illustrated embodiment; Figure 4 yes Figure 1 A schematic diagram of the robotic arm and all the cap-tightening devices in the illustrated embodiment. Detailed Implementation

[0016] like Figure 1-4 As shown, the installation method of the sealing cap onto the nozzle of a stand-up pouch in one embodiment of this application includes the following steps in sequence: (1) Sequentially deliver the sealing caps; (2) Receive multiple sealing caps in sequence and deliver them to the linearly arranged area of ​​multiple sealing caps; (3) Simultaneously push all the sealing caps located on the linear arrangement area of ​​the multi-sealing caps to the arc arrangement area of ​​the multi-sealing caps distributed along the arc; (4) Simultaneously grab all the sealing caps located in the arc arrangement area of ​​the multi-sealing cap and put them on all the nozzles on the positioning rod of the rotary nozzle carrying device located at the installation station; (5) Tighten all the sealing caps that are fitted onto the nozzles at the installation station.

[0017] like Figure 1 As shown, in an optional embodiment of this application, the equipment used in the method includes a frame 1 and a turntable-type nozzle carrying device 2 mounted on the frame 1. The turntable-type nozzle carrying device 2 has a turntable 201 that rotates intermittently. Multiple positioning rods 202 for positioning the nozzles of stand-up pouches are installed on the edge of the turntable 201. The frame 1 is provided with a linear arrangement area A of multiple sealing caps, an arc arrangement area B of multiple sealing caps, and an installation station C.

[0018] like Figure 1-3As shown, in one optional embodiment of this application, the arc arrangement area B of the multi-sealing cover is the same as the positioning rod arc formed by all the positioning rods 202 located at the installation station C, and the arc arrangement area B of the multi-sealing cover and the positioning rod arc are parallel to each other.

[0019] The number of sealing caps in the linear arrangement area A, the number of sealing caps in the arc arrangement area B, and the number of positioning rods 202 located at the installation position C are all the same.

[0020] like Figure 2 As shown, in one optional embodiment of this application, the number of sealing caps in the linear arrangement area A of the multiple sealing caps, the number of sealing caps in the arc arrangement area B of the multiple sealing caps, and the number of positioning rods 202 located at the installation station C are all four.

[0021] like Figure 1 As shown, in an alternative embodiment of this application, step (1) involves using a vibratory feeder 3 to convey the sealing cap through a conveying channel 4. This not only saves on equipment costs but also effectively reduces noise.

[0022] In one alternative embodiment of this application, step (1) involves inspecting the sealing cap during the conveying process. If a defect is found in the sealing cap, the sealing cap is removed from the conveying channel outlet.

[0023] In one alternative embodiment of this application, step (2) involves using a robotic arm to deliver the sealing cap to the linearly arranged area A of multiple sealing caps.

[0024] In one alternative embodiment of this application, step (2) involves using a cylinder to sequentially push the sealing caps through the top surface of a horizontally extending plate onto the linearly arranged area A of multiple sealing caps. In other alternative embodiments, an electric cylinder or a mechanical mechanism consisting of a servo motor, lead screw, and nut can be used to replace the cylinder in pushing the sealing caps.

[0025] like Figure 1-4 As shown, in one optional embodiment of this application, step (3) involves a robotic arm 5 grasping the sealing cap, raising the sealing cap and moving it above the suction nozzle, then lowering the sealing cap and placing it onto the corresponding suction nozzle.

[0026] In one alternative embodiment of this application, step (3) involves using multiple robotic arms to grab the sealing cap, raise the sealing cap and move it above the suction nozzle, then lower the sealing cap and place it onto the corresponding suction nozzle.

[0027] like Figure 1-4 As shown, in one optional embodiment of this application, step (4) involves tightening the sealing cap using multiple cap-tightening devices 6 installed at the end of the robotic arm 5. In this embodiment, the number of cap-tightening devices 6 is four.

[0028] like Figure 1-4 As shown, in one optional embodiment of this application, the cap-grabbing and cap-releasing operations in step (3) and the cap-tightening operation in step (4) are all completed using the same cap-tightening device 6. That is, the four cap-tightening devices 6 on the robotic arm 5 sequentially complete the cap-grabbing, cap-releasing, and cap-tightening operations.

[0029] like Figure 4 As shown, in one alternative embodiment of this application, the cap-tightening device 6 includes a rotating component 601, a three-jaw cylinder 602, and three cap-clamping friction wheels 603. The rotating component 601 is mounted on the robotic arm 5, and the bottom end of the rotating component 601 has a rotating end. The three-jaw cylinder 602 is mounted on the rotating end, and the three cap-clamping friction wheels 603 are respectively mounted on the three jaws of the three-jaw cylinder 602.

[0030] like Figure 4 As shown, in one optional embodiment of this application, the rotating component 601 is a servo motor, and the rotating end is the output shaft of the servo motor.

[0031] The embodiments described above in this application improve the installation method of the sealing caps. First, multiple sealing caps are sent to a linear arrangement area of ​​multiple sealing caps distributed along a straight line. Then, these sealing caps are sent to an arc arrangement area of ​​multiple sealing caps distributed along an arc. Simultaneously, these sealing caps are picked up and placed onto all the nozzles fitted on the positioning rods of the rotary nozzle carrying device located at the installation station. Finally, these sealing caps are tightened. Moreover, the picking, placing, and tightening of the sealing caps are all completed by the cap tightening device 6. Therefore, the production steps are optimized, work efficiency is greatly improved, and equipment is saved. Furthermore, the producer can select common general-purpose equipment on the market to complete each step of the work as needed.

[0032] Furthermore, it should be noted that the names of the various parts of the specific embodiments described in this specification may differ. All equivalent or simple variations made to the structure, features, and principles described in this invention are included within the scope of protection of this invention. Those skilled in the art can make various modifications or additions to the described specific embodiments or use similar methods to replace them, as long as they do not deviate from the structure of this invention or exceed the scope defined in these claims, all of which should fall within the scope of protection of this invention.

Claims

1. A method for installing a sealing cap onto the nozzle of a stand-up pouch, characterized in that: The steps are as follows: (1) Sequentially deliver the sealing caps; (2) Receive multiple sealing caps in sequence and deliver them to the linearly arranged area of ​​multiple sealing caps; (3) Simultaneously push all the sealing caps located on the linear arrangement area of ​​the multi-sealing caps to the arc arrangement area of ​​the multi-sealing caps distributed along the arc; (4) Simultaneously grab all the sealing caps located in the arc arrangement area of ​​the multi-sealing cap and put them on all the nozzles on the positioning rod of the rotary nozzle carrying device located at the installation station; (5) Tighten all the sealing caps that are fitted onto the nozzles at the installation station.

2. The installation method of installing the sealing cap onto the nozzle of a stand-up pouch as described in claim 1, characterized in that: The equipment used in the method includes a frame and a rotary nozzle carrying device mounted on the frame. The rotary nozzle carrying device has a turntable that rotates intermittently. Multiple positioning rods for positioning the nozzles of stand-up pouches are installed on the edge of the turntable. The frame is provided with a linear arrangement area for multiple sealing caps, an arc arrangement area for multiple sealing caps, and an installation station.

3. The installation method of installing the sealing cap onto the nozzle of a stand-up pouch as described in claim 1, characterized in that: The arc arrangement area of ​​the multi-seal cover is the same as the positioning rod arc formed by all the positioning rods located at the installation position, and the arc arrangement area of ​​the multi-seal cover and the positioning rod arc are parallel to each other.

4. The installation method of installing the sealing cap onto the nozzle of a stand-up pouch as described in claim 1, characterized in that: The number of sealing caps in the linear arrangement area, the number of sealing caps in the arc arrangement area, and the number of positioning rods located at the installation position are all the same.

5. The installation method of installing the sealing cap onto the nozzle of a stand-up pouch as described in claim 1, characterized in that: In step (1), a vibratory plate is used to transport the sealing cap through a conveying channel.

6. The installation method of installing the sealing cap onto the nozzle of a stand-up pouch as described in claim 5, characterized in that: In step (1), during the conveying of the sealing cover, the sealing cover is inspected. If a defect is found in the sealing cover, the sealing cover is rejected at the outlet of the conveying channel.

7. The installation method of installing the sealing cap onto the nozzle of a stand-up pouch as described in claim 1, characterized in that: In step (2), a robotic arm is used to deliver the sealing cap to the area where multiple sealing caps are arranged in a straight line.

8. The installation method of installing the sealing cap onto the nozzle of a stand-up pouch as described in claim 1, characterized in that: In step (3), one or more robotic arms are used to grab the sealing cap, lift it up and move it above the nozzle, and then put the sealing cap down and put it on the corresponding nozzle.

9. The installation method of installing the sealing cap onto the nozzle of a stand-up pouch as described in claim 8, characterized in that: Step (4) involves using multiple cap tightening devices installed at the end of the robotic arm to tighten the sealing cap; the cap gripping and cap placement in step (3) and the cap tightening in step (4) are all completed using the same cap tightening device.

10. The installation method of installing the sealing cap onto the nozzle of a stand-up pouch as described in claim 9, characterized in that: The cap-tightening device includes a rotating component, a three-jaw cylinder, and three cap-clamping friction wheels. The rotating component is mounted on a robotic arm and has a rotating end at its bottom. The three-jaw cylinder is mounted on the rotating end, and the three cap-clamping friction wheels are respectively mounted on the three jaws of the three-jaw cylinder.

Images