Synchronous bag opening mechanism of horizontal pushing vacuum packaging machine

Abstract

The utility model discloses a synchronous bag opening mechanism of a horizontal-pushing vacuum packaging machine, which is used for being arranged between a bag feeding station and a material poking station and comprises an arc-shaped rack plate, an arc-shaped guide rail, a sliding seat, a driving device and a gear, and the gear is meshed with the rack plate; a lifting bag suction arm is arranged at the upper end of the sliding seat and comprises a vertical plate, a vertical guide rail, a lifting air cylinder, a connecting plate, a flat plate and a suction cup, and the suction cup is communicated with an air extractor. During working, the bag suction arm sucks the upper end of a packaging bag, moves upwards to open the bag and synchronously rotates to a material poking station along with the rotating disc, so that the intermittent bag opening time is saved, and the efficiency is improved. The mechanism is compact in structure, reliable in action and suitable for packaging bags of various specifications, and the packaging speed and the automation level are remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of food packaging machinery, and in particular to a synchronous bag opening mechanism for a flat-push vacuum packaging machine. Background Technology

[0002] Flatbed vacuum packaging machines are mainly used for food packaging. Their structure includes a sorting turntable with vacuum chambers evenly distributed around its circumference. Around the turntable are a bag-loading station and a material-feeding station. The packaging bag is placed into the vacuum chamber at the bag-loading station and then rotates to the material-feeding station. Currently, the material-feeding station requires a bag-opening component to open the bag before feeding material in. This operation requires the turntable to stop for a considerable time, severely impacting packaging efficiency. Utility Model Content

[0003] This invention aims to overcome the shortcomings of existing flat-push vacuum packaging machines, which require stopping the machine to open the bag before inserting the material, resulting in low efficiency. It provides a mechanism that can complete the bag opening simultaneously during the rotation of the turntable, thereby shortening the downtime and improving packaging efficiency.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a synchronous bag-opening mechanism for a flat-push vacuum packaging machine, used to be installed between the bag-loading station and the material-push station of the flat-push vacuum packaging machine, including an arc-shaped rack plate, an arc-shaped guide rail arranged along the rack plate, a slide block that can slide along the arc-shaped guide rail, a driving device installed on the lower end face of the slide block, and a gear connected to the output shaft of the driving device. The gear is meshed with the teeth on the rack plate for transmission. The upper end face of the slide block is provided with a liftable bag-suction arm. The bag-suction arm includes a vertical plate installed on the upper end face of the slide block, a vertical guide rail arranged on the vertical plate, a lifting cylinder that can slide up and down along the vertical guide rail, and a connecting plate fixed to the upper end of the lifting cylinder. The end of the connecting plate is provided with a flat plate, and the flat plate is provided with a plurality of suction cups. The suction cups are connected to a suction device through a solenoid valve.

[0005] The driving device is a servo motor.

[0006] The lower piston rod of the lifting cylinder is connected to the upper end face of the slide block, enabling the lifting cylinder to drive the connecting plate and the flat plate to move up and down.

[0007] The suction cup is connected to an air pump via a solenoid valve, and the solenoid valve controls the suction and de-airing of the suction cup.

[0008] The curvature of the arc-shaped guide rail is adapted to the rotation trajectory of the indexing turntable of the flat-push vacuum packaging machine, so that the slide can rotate synchronously with the turntable.

[0009] After the bag-loading station moves the packaging bag into the vacuum chamber, the lower end of the packaging bag is fixed by the bottom of the vacuum chamber. The suction arm of the synchronous bag-opening mechanism descends and uses a suction cup to attach the upper end of the packaging bag. Then, the lifting cylinder drives the suction arm to move up and open the bag. At the same time, the drive device drives the slide to rotate synchronously with the turntable along the arc guide rail through gear and rack transmission, transferring the opened packaging bag to the material feeding station. At this station, the material feeding operation can be carried out directly without additional stoppage to open the bag, thus significantly improving packaging efficiency.

[0010] The beneficial effects of this utility model are:

[0011] 1. Bag opening is completed simultaneously while the turntable is rotating, reducing downtime and significantly improving packaging speed.

[0012] 2. The combination of gear rack and pinion with arc-shaped guide rail enables synchronous rotation of the suction bag arm and turntable, resulting in a simple and reliable structure.

[0013] 3. The suction arm can be raised and lowered and the suction cups can be used to hold the bag opening. The bag opening action is smooth and adaptable to different sizes of packaging bags.

[0014] 4. The overall structure is compact, easy to integrate into existing equipment, and has low modification costs.

[0015] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0016] Figure 1 This is a perspective view of a specific embodiment of the present utility model.

[0017] Explanation of reference numerals in the attached drawings: 101, arc-shaped rack plate; 102, arc-shaped guide rail; 103, slide block; 201, servo motor; 202, gear; 301, vertical plate; 303, lifting cylinder; 304, connecting plate; 305, flat plate; 306, suction cup; Detailed Implementation

[0018] The present invention will be described in detail below through embodiments, which are only used to further illustrate the present invention and should not be construed as limiting the scope of protection of the present invention.

[0019] like Figure 1 As shown, this embodiment discloses a flat-push vacuum packaging machine including an indexing turntable with vacuum chambers evenly distributed around its circumference. A bag-loading station and a material-opening station are sequentially arranged around the turntable. A synchronous bag-opening mechanism, as described in this embodiment, is provided between the two stations.

[0020] The synchronous bag opening mechanism includes an arc-shaped rack plate 101, an arc-shaped guide rail 102 along the rack plate, a slide block 103 that can slide along the arc-shaped guide rail, a servo motor 201 mounted on the lower end face of the slide block, and a gear 202 connected to the output shaft of the servo motor. The gear meshes with the teeth on the rack plate for transmission. A vertical plate 301 is fixedly mounted on the upper end face of the slide block. A vertical guide rail is provided on the vertical plate. A lifting cylinder 303 is mounted on the vertical guide rail via a slider and can slide up and down. The piston rod at the lower end of the lifting cylinder is connected to the upper end face of the slide block. A long plate-shaped connecting plate 304 is fixedly mounted on the upper end of the lifting cylinder. A flat plate 305 is mounted on the end of the connecting plate. Multiple suction cups 306 are mounted on the flat plate. The suction cups 306 are connected to a vacuum pump via a solenoid valve.

[0021] During operation, the bag-loading station places the packaging bag into the vacuum chamber, where the bottom surface of the vacuum chamber adheres to and fixes the lower end of the packaging bag. The slide of the synchronous bag-opening mechanism is located above the corresponding vacuum chamber. The lifting cylinder 303 drives the bag-suction arm to descend, and the suction cup 306 contacts and adheres to the upper end of the packaging bag. Then, the lifting cylinder moves upward, lifting the upper end of the packaging bag to open the bag opening. At the same time, the servo motor 201 drives the gear 202 to move along the rack plate 101, causing the slide 103 to rotate synchronously with the indexing turntable along the arc guide rail 102, conveying the opened packaging bag to the material-removing station, where material can be directly removed, greatly reducing downtime.

[0022] In the above structure, the curvature of the arc-shaped guide rail 102 matches the rotation trajectory of the indexing turntable, ensuring that the slide and the vacuum chamber move synchronously; the number and layout of the suction cups 306 can be adjusted according to the size of the packaging bag; the vacuum pump and the solenoid valve work together to realize the rapid adsorption and release of the suction cups, improving the action response speed.

Claims

1. A synchronous bag opening mechanism of a horizontal push vacuum packaging machine, used between a bag loading station and a material pushing station of the horizontal push vacuum packaging machine, characterized in that: The rack plate (101) is arc-shaped, an arc-shaped guide rail (102) is arranged along the rack plate (101), a sliding seat (103) can slide along the arc-shaped guide rail (102), a driving device is installed on the lower end surface of the sliding seat (103), a gear (202) is connected with the output shaft of the driving device, the gear (202) is in meshing transmission connection with the teeth on the rack plate (101); the upper end surface of the sliding seat (103) is provided with a bag suction arm capable of lifting, the bag suction arm comprises a vertical plate (301) installed on the upper end surface of the sliding seat (103), a vertical guide rail arranged on the vertical plate (301), a lifting cylinder (303) capable of sliding up and down along the vertical guide rail, and a connecting plate (304) fixed to the upper end of the lifting cylinder (303), the end of the connecting plate (304) is provided with a flat plate (305), a plurality of suction cups (306) are arranged on the flat plate (305), and the suction cups (306) are communicated with a suction device through electromagnetic valves.

2. The synchronous bag opening mechanism of claim 1, wherein: The driving device is a servo motor (201).

3. The synchronous bag opening mechanism of claim 1, wherein: The lower end piston rod of the lifting cylinder (303) is connected with the upper end surface of the sliding seat (103), so that the lifting cylinder (303) can drive the connecting plate (304) and the flat plate (305) to move up and down.

4. The synchronous bag opening mechanism of claim 1, wherein: The suction cups (306) are connected with a suction pump through electromagnetic valves, and the suction and exhaust of the suction cups (306) are controlled by the electromagnetic valves.

5. The synchronous bag opening mechanism of claim 1, wherein: The curvature of the arc-shaped guide rail (102) is matched with the rotation track of the indexing turntable of the flat push vacuum packaging machine, so that the sliding seat (103) can rotate synchronously with the turntable.

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