Heat sealing mechanism of a nozzle bag assembly production line

Abstract

A kind of heat sealing mechanism of suction nozzle bag assembly production line, it is characterized by comprising frame, multiple sealing units, controllable opening and closing mechanism, controllable opening and closing mechanism, all sealing units are respectively mounted on frame;Controllable opening and closing mechanism drives all sealing units to complete opening, closing action alternately and synchronously and can control any one sealing unit not to complete sealing work in closing process.The beneficial effects of the prior art are that, due to the improvement of sealing mechanism, each opening and closing group respectively uses a separate control cylinder to control the upper sealing device and the lower sealing device of the corresponding sealing unit, and when unexpected situations such as missing or skewing of the suction nozzle are found, the corresponding sealing unit can be controlled to give up processing the bag body during the opening and closing movement, and the suction nozzle bag that fails to insert the nozzle can be processed again if it is not damaged, so the scrap rate can be reduced.

Description

Technical Field

[0001] This utility model relates to a heat sealing mechanism for a spout bag assembly production line. Background Technology

[0002] The manufacturing process of spout pouches typically involves first manufacturing the spout and the pouch body separately, and then sending them to the spout pouch assembly line. After the spout is inserted into the opening of the pouch body, a sealing mechanism (usually including at least one sealing device; when multiple sealing devices are used, some are heat-sealing devices and some are cold-sealing devices) is used to seal the spout to the opening of the pouch body, thus completing the assembly of the spout pouch and obtaining the finished spout pouch.

[0003] A horizontal nozzle welding machine, as disclosed in Chinese patent document CN223671988U, includes a frame, a bag picking mechanism, a bag horizontal conveying mechanism, a bag opening mechanism, a nozzle and bag insertion mechanism, at least two heat sealing mechanisms, and a finished product collection mechanism. The frame is characterized by having a bag picking station, a bag opening station, an insertion station, at least one heat sealing temporary parking station, and a finished product collection station arranged sequentially along the bag conveying path. The bag horizontal conveying mechanism includes a horizontal clamping conveying unit and a temporary clamping unit for bag processing. All heat sealing mechanisms are mounted on the horizontal clamping conveying unit, and each heat sealing mechanism corresponds one-to-one with the insertion station and all heat sealing temporary parking stations.

[0004] However, the applicant discovered that the existing spout bag assembly line (including the aforementioned horizontal nozzle welding machine) cannot control each sealing mechanism individually. If a spout bag semi-finished product has a missing or misaligned nozzle, the sealing of that spout bag semi-finished product cannot be stopped. Utility Model Content

[0005] The purpose of this invention is to provide a heat-sealing mechanism for a spout pouch assembly line, which can control any sealing unit to not complete the sealing process during closure. The technical solution adopted is as follows: A heat-sealing mechanism for a spout pouch assembly production line is characterized by: a frame, multiple sealing units, and a controllable opening and closing mechanism. The controllable opening and closing mechanism and all sealing units are respectively mounted on the frame. The controllable opening and closing mechanism drives all sealing units to synchronously and alternately complete opening and closing actions, and can control any sealing unit to not complete the sealing work during the closing process. Each sealing unit includes a support frame, a vertical slide rail, an upper sealing device, and a lower sealing device. The support frame is mounted on the frame, and the vertical slide rail is mounted on the support frame. The upper sealing device and the lower sealing device are slidably mounted on the vertical slide rail. The controllable opening and closing mechanism is connected to the upper sealing device and the lower sealing device respectively and drives the upper sealing device and the lower sealing device to perform opening and closing movements. When a problem exists with a certain spout pouch semi-finished product (such as no spout, or incorrect spout position or status), the controllable opening and closing mechanism controls the corresponding sealing unit to not perform the sealing work on the spout pouch semi-finished product during the closing process.

[0006] In a preferred embodiment, the controllable opening and closing mechanism includes a servo motor, a drive shaft, and at least one opening and closing group. The drive shaft is rotatably mounted on the bottom of the frame. The servo motor is mounted on the frame and connected to the drive shaft, driving the drive shaft to rotate. All opening and closing groups are respectively mounted on the drive shaft. Each opening and closing group corresponds to a sealing unit. Each opening and closing group is connected to the corresponding sealing unit and drives the upper sealing device and lower sealing device of the corresponding sealing unit to perform opening and closing movements.

[0007] The beneficial effects of this utility model compared with the prior art are that, due to the improvement of the sealing mechanism, each opening and closing group uses a separate control cylinder to control the upper sealing device and lower sealing device of the corresponding sealing unit. If an unexpected situation such as missing or crooked nozzle is found, the corresponding sealing unit can be controlled to abandon the processing of the bag body during the opening and closing movement. As long as the nozzle bag that failed to insert the nozzle is not damaged, it can be processed again, thus reducing the scrap rate. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the structure of one embodiment of the present invention; Figure 2 yes Figure 1 Left view of the embodiment shown; Figure 3 yes Figure 1 The circuit block diagram of the embodiment shown is shown. Detailed Implementation

[0009] like Figure 1 , 2As shown, in one embodiment of this application, the heat sealing mechanism of the spout bag assembly production line includes a controllable opening and closing mechanism 2, multiple sealing units 1, and a frame 3. The controllable opening and closing mechanism 2 and all sealing units 1 are respectively mounted on the frame 3. The controllable opening and closing mechanism 2 drives all sealing units 1 to synchronously and alternately complete the opening and closing actions, and can control any sealing unit 1 to not complete the sealing work during the closing process. The sealing unit 1 includes a support frame 11, a vertical slide rail 12, an upper sealing device 13, and a lower sealing device 14. The support frame 11 is mounted on the frame 201, and the vertical slide rail 12 is mounted on the support frame 11. The upper sealing device 13 and the lower sealing device 14 are slidably mounted on the vertical slide rail 12. The controllable opening and closing mechanism 2 is connected to the upper sealing device 13 and the lower sealing device 14 respectively and drives the upper sealing device 13 and the lower sealing device 14 to perform opening and closing movements. When a problem exists with a certain spout bag semi-finished product (such as: no spout, or the spout position or status is incorrect), the controllable opening and closing mechanism 2 can control the corresponding sealing unit 1 not to seal the spout bag semi-finished product during the closing process.

[0010] like Figure 1 , 2 As shown, in one alternative embodiment, the controllable opening and closing mechanism 2 includes a servo motor 21, a drive shaft 22, and at least one opening and closing group 23. The drive shaft 22 is rotatably mounted on the bottom of the frame 201. The servo motor 21 is mounted on the frame 201 and is connected to the drive shaft 22, driving the drive shaft 22 to rotate. All opening and closing groups 23 are respectively mounted on the drive shaft 22. Each opening and closing group 23 corresponds to a sealing unit 1. Each opening and closing group 23 is connected to the corresponding sealing unit 1 and drives the upper sealing device 13 and the lower sealing device 14 of the corresponding sealing unit 1 to perform opening and closing movements.

[0011] The opening and closing assembly 23 includes a first connecting rod 231, a second connecting rod 232, and a control cylinder 233. The corresponding upper sealing device 13 and lower sealing device 14 are connected to both sides of the transmission shaft 22 through the connecting structure composed of the first connecting rod 231, the control cylinder 233, and the second connecting rod 232.

[0012] like Figure 1 , 2 As shown, in an alternative embodiment, the opening and closing assembly 23 includes a first connecting rod 231, a second connecting rod 232, and a control cylinder 233. The two ends of the first connecting rod 231 are respectively connected to one side of the drive shaft 22 and the corresponding upper sealing device 13. The two ends of the control cylinder 233 are respectively connected to the other side of the drive shaft 22 and the bottom end of the second connecting rod 232. The top end of the second connecting rod 232 is connected to the corresponding lower sealing device 14.

[0013] In an alternative embodiment, the opening and closing assembly 23 includes a first connecting rod 231, a second connecting rod 232, and a control cylinder 233. The two ends of the first connecting rod 231 are respectively connected to one side of the drive shaft 22 and the corresponding lower sealing device 14. The two ends of the control cylinder 233 are respectively connected to the other side of the drive shaft 22 and the bottom end of the second connecting rod 232. The top end of the second connecting rod 232 is connected to the corresponding upper sealing device 13.

[0014] like Figure 3 As shown, in an alternative embodiment, the heat sealing mechanism of the spout bag assembly line further includes a PLC control device 4, which controls the servo motor 21 and all control cylinders 233 respectively.

[0015] The following is combined with Figure 1 , 2 The working process of this embodiment is described below: Servo motor 21 operates, and its output shaft alternately rotates forward and reverse, driving transmission shaft 22 to rotate forward and reverse. Transmission shaft 22 drives all opening and closing groups 23 to operate, causing the upper sealing device 13 and lower sealing device 14 of each sealing unit 1 to alternately open and close, while the piston shaft of control cylinder 233 remains extended. During normal operation, the upper sealing device 13 and lower sealing device 14 of each sealing unit 1 contact each other when closing, completing the sealing of the nozzle bag and the nozzle.

[0016] When the spout bag is missing a spout or the spout is misaligned (detected through manual observation or a testing device), the PLC control device 4 controls the piston shaft of the corresponding control cylinder 233 to retract a short distance. This prevents the upper sealing device 13 and lower sealing device 14 of the corresponding sealing unit 1 from contacting each other during closing, as the lower sealing device 14 cannot rise to the appropriate position. This prevents the spout bag from being processed into waste (the spout bag can be recycled and reused).

[0017] like Figure 1 , 2 As shown in this embodiment, due to the improvement of the sealing mechanism, each opening and closing group uses a separate control cylinder to control the upper and lower sealing devices of the corresponding sealing unit. If unexpected situations such as missing or misaligned nozzles are detected, the corresponding sealing unit can be controlled to abandon processing of the bag body during the opening and closing motion. This reduces the scrap rate, and nozzle bags that have failed to insert nozzles can be reprocessed as long as they are not damaged.

[0018] 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 utility model patent concept are included within the protection scope of this utility model patent. Those skilled in the art to which this utility model pertains may 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 utility model or exceed the scope defined in these claims, they should all fall within the protection scope of this utility model.

Claims

1. A heat-sealing mechanism for a spout pouch assembly production line, characterized in that: The device includes a frame, multiple sealing units, and a controllable opening and closing mechanism. The controllable opening and closing mechanism and all sealing units are respectively mounted on the frame. The controllable opening and closing mechanism drives all sealing units to synchronously and alternately complete the opening and closing actions, and can control any sealing unit to not complete the sealing work during the closing process. Each sealing unit includes a support frame, a vertical slide rail, an upper sealing device, and a lower sealing device. The support frame is mounted on the frame, the vertical slide rail is mounted on the support frame, and the upper sealing device and lower sealing device are slidably mounted on the vertical slide rail. The controllable opening and closing mechanism is connected to the upper sealing device and the lower sealing device respectively and drives the upper sealing device and the lower sealing device to perform opening and closing movements.

2. The heat-sealing mechanism of the spout bag assembly line as described in claim 1, characterized in that: The controllable opening and closing mechanism includes a servo motor, a drive shaft, and at least one opening and closing group. The drive shaft is rotatably mounted on the bottom of the frame. The servo motor is mounted on the frame and connected to the drive shaft, driving the drive shaft to rotate. All opening and closing groups are respectively mounted on the drive shaft. Each opening and closing group corresponds to a sealing unit. Each opening and closing group is connected to the corresponding sealing unit and drives the upper sealing device and lower sealing device of the corresponding sealing unit to perform opening and closing movements.

3. The heat-sealing mechanism of the spout bag assembly line as described in claim 2, characterized in that: The opening and closing assembly includes a first connecting rod, a second connecting rod, and a control cylinder. The corresponding upper sealing device and lower sealing device are respectively connected to both sides of the transmission shaft through the connecting structure composed of the first connecting rod, the control cylinder, and the second connecting rod.

4. The heat-sealing mechanism of the spout bag assembly line as described in claim 3, characterized in that: The heat sealing mechanism of the spout bag assembly line also includes a PLC control device, which controls the servo motor and all control cylinders respectively.

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