Bag placing arm mechanism

Abstract

This utility model relates to a bag-loading swing arm mechanism, including a mounting plate on which a receiving platform is fixed. A liftable baffle is provided at the rear of the receiving platform. A linkage mechanism, driven by a drive mechanism, is located above the receiving platform, enabling the lower part to swing upwards and backwards. Bag-clamping cylinders are located at the lower part of the linkage mechanism and on both sides of the receiving platform. Clamping rods are fixed to the two jaws of each bag-clamping cylinder. This mechanism facilitates the upward and backward delivery of packaging bags fed by a bag-feeding mechanism, helping to change the packaging bag from a flat state to a vertical state.

Description

Technical Field

[0001] This utility model relates to an upper bag swing arm mechanism. Background Technology

[0002] Automatic packaging machines can automatically pick up, open, fill, and seal bags. In current automatic packaging systems, during bag loading, a bag loading mechanism transfers the bags fed by the bag feeding mechanism to the next processing unit. Examples include utility model patents CN218892763U ("A Swing Arm Bag Feeding Mechanism") and CN210259022U ("A Swing Arm Bag Loading Device for a Bag-Feeding Automatic Packaging Machine"). However, due to the height difference between the bag feeding mechanism and the bag receiving mechanism, and the fact that the fed bags are laid flat while the receiving mechanism typically accepts bags in a vertical position, a bag loading swing arm mechanism is needed to change the bag's position from flat to vertical. Utility Model Content

[0003] The purpose of this utility model is to provide an upper bag swing arm mechanism, which is convenient for delivering the packaging bag fed by the bag feeding mechanism to the rear and upward, and helps the packaging bag change from a flat state to a vertical state.

[0004] The technical solution of this utility model is as follows: an upper bag swing arm mechanism, including a mounting plate, a receiving platform fixed on the mounting plate, a liftable baffle plate provided on the rear side of the receiving platform, and a linkage mechanism driven by a drive mechanism to swing the lower part backward and upward on the upper side of the receiving platform. The lower part of the linkage mechanism and both sides of the receiving platform are bag clamping cylinders, and clamping rods are fixed on the two clamping claws of the bag clamping cylinders.

[0005] Furthermore, the linkage mechanism includes a swing shaft arranged laterally and rotatably connected to the mounting plate. Both ends of the swing shaft are fixed with swing arms. A frame is rotatably connected to the upper end of the two swing arms. One side of the upper part of the frame is hinged to one end of a pull rod. One side of the mounting plate is fixed with a vertical plate. The other end of the pull rod is hinged to the upper end of the vertical plate.

[0006] Furthermore, the driving mechanism is a swing cylinder with the housing hinged to the mounting plate, and the telescopic rod of the swing cylinder is hinged to the lower part of one of the swing arms.

[0007] Furthermore, a fixed seat is installed on the rear side of the mounting plate, and the housing of the swing cylinder is hinged to the upper end of the fixed seat.

[0008] Furthermore, the frame includes an upper pivot shaft rotatably connected to the upper ends of the two swing arms. Both ends of the upper pivot shaft are fixed with side plates, and an upper fixing rod located on the upper side of the upper pivot shaft is fixed between the upper ends of the two side plates. One end of the upper fixing rod is hinged to one end of the traction rod.

[0009] Furthermore, the bag-clamping cylinder is arranged laterally and fixed to the lower inner side of the side plate; a lower fixing rod is fixed between the middle of the two side plates.

[0010] Furthermore, a vertical cylinder is fixed to the rear side of the receiving platform, and the telescopic rod of the vertical cylinder is fixedly connected to the lower end of the baffle plate.

[0011] Furthermore, a receiving plate for feeding packaging bags is fixed to the front side of the receiving platform.

[0012] Compared with the prior art, the present invention has the following advantages:

[0013] 1. The bag-loading swing arm mechanism has a compact structure, which can easily overcome the height difference between the bag-feeding mechanism and the bag-receiving mechanism. It can transport the bag fed by the bag-feeding mechanism to the rear and upward to complete the bag loading, and help the bag change from a flat state to a vertical state, making it easier for the bag-receiving mechanism to receive it.

[0014] 2. The bag-loading swing arm mechanism is equipped with a material support platform and a baffle plate, which facilitates the positioning of the packaging bags fed into the bag-loading swing arm mechanism and makes it easier for the bag-clamping cylinder to clamp the bags. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the front structure of the upper bag swing arm mechanism of this utility model;

[0016] Figure 2 This is a schematic diagram of the bag-loading swing arm mechanism of this utility model after the bag is loaded;

[0017] In the diagram: 10-Mounting plate; 20-Receiving platform; 21-Vertical cylinder; 22-Baffle plate; 23-Receiving plate; 24-Baffle protrusion; 30-Linkage mechanism; 31-Bearing seat; 32-Swing shaft; 33-Swing arm; 34-Upper shaft; 35-Side plate; 36-Upper fixing rod; 37-Pull rod; 38-Upright plate; 39-Lower fixing rod; 40-Bag clamping cylinder; 41-Clamping rod; 50-Swing cylinder; 51-Fixed seat. Detailed Implementation

[0018] To make the above-mentioned features and advantages of this utility model more easily understood, specific embodiments are described below in conjunction with the accompanying drawings, but this utility model is not limited thereto.

[0019] refer to Figure 1 and Figure 2

[0020] A bag-loading swing arm mechanism includes a mounting plate 10, on which a receiving platform 20 is fixed. The receiving platform is used to receive the rear part of the packaging bag fed by the bag-feeding mechanism. A liftable baffle plate 22 is provided on the rear side of the receiving platform. A linkage mechanism 30 is provided on the upper side of the receiving platform, which is driven by a drive mechanism to swing the lower part backward and upward. Bag-clamping cylinders 40 are provided on both sides of the receiving platform at the lower part of the linkage mechanism. Clamping rods 41 are fixed on the two jaws of the bag-clamping cylinders so that the rear sides of the packaging bag can be clamped by the clamping rods of the bag-clamping cylinders. Then, the drive mechanism drives the linkage mechanism to rotate, so that the packaging bag is lifted backward and upward for feeding into the next process.

[0021] In this embodiment, the linkage mechanism includes a horizontally arranged swing shaft 32 with both sides rotatably connected to the mounting plate via bearing seats 31. Both ends of the swing shaft are fixed with swing arms 33. A frame is rotatably connected to the upper ends of the two swing arms. One side of the upper part of the frame is hinged to one end of a pull rod 37. A vertical plate 38 is fixed to one side of the mounting plate, and the other end of the pull rod is hinged to the upper end of the vertical plate. Specifically, the frame includes an upper shaft 34 rotatably connected to the upper ends of the two swing arms. Both ends of the upper shaft are fixed with side plates 35. An upper fixing rod 36 located above the upper shaft is fixed between the upper ends of the two side plates. One end of the upper fixing rod is hinged to one end of the pull rod. The bag-clamping cylinder is horizontally arranged and fixed to the lower inner side of the side plate.

[0022] The swing arm is driven to swing backward by the drive mechanism. Due to the action of the pull rod, when the upper part of the swing arm swings backward, the side plate is pulled by the pull rod, so that the lower part of the side plate swings backward and upward, thereby realizing the conveying of the packaging bag backward and upward by the bag clamping cylinder.

[0023] In this embodiment, the driving mechanism is a swing cylinder 50, and a fixed seat 51 is installed on one side of the rear of the mounting plate. The housing of the swing cylinder is hinged to the upper end of the fixed seat, and the telescopic rod of the swing cylinder is hinged to the lower part of one of the swing arms. Thus, the swing arm is driven to swing by the swing cylinder.

[0024] In this embodiment, to make the frame more stable, a lower fixing rod 39 is fixed between the middle of the two side plates.

[0025] In this embodiment, a vertical cylinder 21 is fixed to the rear side of the receiving platform to drive the baffle plate to rise and fall. The telescopic rod of the vertical cylinder is fixedly connected to the lower end of the baffle plate, and the upper end of the baffle plate has a baffle protrusion 24. The baffle plate is driven to rise above the receiving platform by the vertical cylinder so that after the rear end of the packaging bag moves to the receiving platform, the baffle plate can block the packaging bag.

[0026] In this embodiment, to facilitate the entry of packaging bags into the receiving platform, a receiving plate 23 for guiding the packaging bags is fixed to the front side of the receiving platform. An upward-facing sensor (e.g., mounted on...) is installed on the receiving platform. Figure 1 (In the recesses on both sides of the material receiving platform) to detect whether the packaging bag has entered the material receiving platform.

[0027] Initially, the baffle plate protrudes from the receiving platform, and the two clamping rods of the bag-clamping cylinder open. When the rear of the packaging bag is fed into the receiving platform via the bag-feeding mechanism (with a portion of the bag still on the feeding mechanism), the sensor on the receiving platform detects the packaging, and the bag-clamping cylinder immediately activates, clamping both sides of the packaging bag with the clamping rods (the feeding mechanism can stop operating at this time; the feeding mechanism can be a chain-plate feeding mechanism). The baffle plate descends, the swing cylinder retracts, and drives the upper end of the swing arm to swing backward. Under the action of the pull rod, the side plate drives the bag-clamping cylinder to swing backward and upward, so that the packaging bag can be fed into the next process mechanism (after the packaging bag is fed into the next process, the bag-clamping cylinder opens). The telescopic rod of the swing cylinder extends, the swing arm resets, the bag-clamping cylinder returns to its original position on both sides of the receiving platform, and the baffle plate rises.

[0028] If this utility model discloses or relates to mutually fixedly connected parts or structural components, then unless otherwise stated, a fixed connection can be understood as: a detachable fixed connection (e.g., using bolts or screws) or a non-detachable fixed connection (e.g., riveting or welding). Of course, mutually fixed connections can also be replaced by an integral structure (e.g., manufactured using a casting process) (except where it is obviously impossible to use an integral forming process).

[0029] In addition, unless otherwise stated, the terms used to indicate positional relationships or shapes in any of the technical solutions disclosed in this utility model above include states or shapes that are similar to, close to, or approximate with them.

[0030] Any component provided by this utility model can be assembled from multiple individual components, or it can be a single component manufactured by a one-piece molding process.

[0031] The above description is only a preferred embodiment of the present utility model. All equivalent changes and modifications made within the scope of the patent application of the present utility model shall be covered by the present utility model.

Claims

1. A swing arm mechanism for an upper bag, comprising a mounting plate, characterized in that, A receiving platform is fixed on the mounting plate. A liftable baffle is provided on the rear side of the receiving platform. A linkage mechanism driven by a drive mechanism is provided on the upper side of the receiving platform to swing the lower part backward and upward. Bag clamping cylinders are located at the lower part of the linkage mechanism and on both sides of the receiving platform. A clamping rod is fixed on each of the two jaws of the bag clamping cylinder.

2. The upper bag swing arm mechanism according to claim 1, characterized in that, The linkage mechanism includes a horizontally arranged swing shaft that is rotatably connected to the mounting plate. Both ends of the swing shaft are fixed with swing arms. A frame is rotatably connected to the upper ends of the two swing arms. One side of the upper part of the frame is hinged to one end of a pull rod. One side of the mounting plate is fixed with a vertical plate. The other end of the pull rod is hinged to the upper end of the vertical plate.

3. The upper bag swing arm mechanism according to claim 2, characterized in that, The driving mechanism is a swing cylinder with the housing hinged to the mounting plate, and the telescopic rod of the swing cylinder is hinged to the lower part of one of the swing arms.

4. The upper bag swing arm mechanism according to claim 3, characterized in that, A fixed seat is installed on one side of the rear of the mounting plate, and the housing of the swing cylinder is hinged to the upper end of the fixed seat.

5. The upper bag swing arm mechanism according to claim 2, 3 or 4, characterized in that, The frame includes an upper pivot shaft rotatably connected to the upper ends of the two swing arms. Both ends of the upper pivot shaft are fixed with side plates. An upper fixing rod located on the upper side of the upper pivot shaft is fixed between the upper ends of the two side plates. One end of the upper fixing rod is hinged to one end of the traction rod.

6. The upper bag swing arm mechanism according to claim 5, characterized in that, The bag-clamping cylinder is horizontally positioned and fixed to the lower inner side of the side plate; a lower fixing rod is fixed between the middle of the two side plates.

7. The upper bag swing arm mechanism according to claim 1, 2, 3, 4 or 6, characterized in that, A vertical cylinder is fixed to the rear side of the receiving platform, and the telescopic rod of the vertical cylinder is fixedly connected to the lower end of the baffle plate.

8. The upper bag swing arm mechanism according to claim 7, characterized in that, A receiving plate for feeding packaging bags is also fixed to the front side of the receiving platform.

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