Limiting mechanism of plastic particle packaging machine

Abstract

The utility model discloses a limiting mechanism of a plastic particle packaging machine, which relates to the field of plastic particle processing and packaging, and comprises packaging machine equipment, the limiting mechanism is arranged below a rack shell of the packaging machine equipment, and the limiting mechanism is used for limiting and stabilizing a packaging bag containing plastic particles; the limiting mechanism comprises a sliding bottom frame, one side end of the sliding bottom frame is fixed to a machine frame of the packaging machine equipment, a first bag holding hoop and a second bag holding hoop which are movably arranged are installed on the sliding bottom frame, and the first bag holding hoop and the second bag holding hoop are movably arranged relatively and used for limiting and clamping packaging bags containing plastic particles. By means of the limiting mechanism, packaging machine equipment used for packaging plastic particle packaging bags can better seal the tops of the packaging bags, and the situation that due to the sealing quality problem, plastic particles in the packaging bags are scattered out of the packaging bags before sealing, and waste of raw materials is caused is avoided.

Description

Technical Field

[0001] The utility model relates to the field of plastic particle processing and packaging, in particular to a limiting mechanism of a plastic particle packaging machine. Background Art

[0002] Plastic particles refer to granular plastics, which are generally divided into more than 200 types and subdivided into thousands of types. Common plastic particles include general-purpose plastics, engineering plastics, and special plastics. Among them, general-purpose plastics: polypropylene, polyethylene, polyvinyl chloride, polystyrene, polyester, polyurethane, etc.; engineering plastics: nylon, polytetrafluoroethylene, polyoxymethylene, polycarbonate silicone, etc.; special plastics: thermosetting plastics, functional polymer plastics, such as artificial kidneys. With the development of society, the use of plastic particles is becoming more and more extensive.

[0003] In order to facilitate the transportation and processing of plastic particles, the produced plastic particles are generally packaged in packaging bags, and then the bags of packaged plastic particles are transported to the factory for further processing as needed. However, the existing packaging machines (equipment) used for packaging plastic particles generally place the packaging bags directly on the processing operation table during the packaging process, and then fill and package them through the packaging machine, and finally "seal" the packaging bags. In this process, as the number of plastic particles in the packaging bag increases, the volume of the packaging bag increases and expands. If the packaging bag is not clamped and limited, it may not only affect the upper sealing end of the packaging bag, but also cause the sealing to be loose; moreover, as the volume of the packaging bag increases and expands, the center of gravity of the plastic particles in the packaging bag "shifts", which may cause the upper sealing end of the packaging bag to detach from the sealing mechanism of the packaging machine, and the plastic particles in the packaging bag fall out of the packaging bag before sealing, resulting in a waste of raw materials. Utility Model Content

[0004] The purpose of this utility model is achieved through the following technical solutions:

[0005] A limiting mechanism for a plastic granule packaging machine comprises a sliding chassis, one side end of which is fixed to a frame of the packaging machine, and a movable structure which can be movably arranged and is used to limit and clamp a packaging bag containing plastic granules is installed on the sliding chassis;

[0006] The movable structure comprises a first bag holding hoop and a second bag holding hoop. The first bag holding hoop and the second bag holding hoop are relatively movable and are used to limit and clamp the packaging bag containing plastic particles.

[0007] Preferably, one end face of the first bag - holding hoop away from the second bag - holding hoop is hinged with a first connecting rod, the other end of the first connecting rod is hinged on the first sliding frame, a first deformation spring is arranged through the first connecting rod, one end of the first deformation spring is connected with the first bag - holding hoop, and the other end of the first deformation spring is connected with the first sliding frame;

[0008] One end face of the second bag - holding hoop away from the first bag - holding hoop is hinged with a second connecting rod, the other end of the second connecting rod is hinged on the second sliding frame, a second deformation spring is arranged through the second connecting rod, one end of the second deformation spring is connected with the second bag - holding hoop, and the other end of the second deformation spring is connected with the second sliding frame.

[0009] Preferably, one end of the first sliding frame away from the first bag - holding hoop is connected with a first rotating shaft, the first rotating shaft is rotatably connected with the first movable bracket through a bearing, and the upper and lower ends on both sides of the first movable bracket are respectively rotatably connected with first limiting rotating rods;

[0010] The bottom end of the first sliding frame is connected with a first connecting shaft, both ends of the first connecting shaft are connected with the first movable bracket through connecting seats, the first connecting shaft is connected with a first movable curved rod, the other end of the first movable curved rod is hinged on the output end of the first movable cylinder through a hinge seat, and the first movable cylinder drives the first sliding frame to move through the first movable curved rod.

[0011] Preferably, a first limiting guide rod a is arranged below the two first limiting rotating rods on the upper part of the first movable bracket, the two first limiting rotating rods on the upper part of the first movable bracket are respectively and limit - connected with the first limiting guide rod a through pin shafts, and both ends of the first limiting guide rod a are respectively connected to the sliding bottom frame through connecting seats;

[0012] A first limiting guide rod b is arranged above the two first limiting rotating rods on the lower part of the first movable bracket, the two first limiting rotating rods on the lower part of the first movable bracket are respectively and limit - connected with the first limiting guide rod b through pin shafts, and both ends of the first limiting guide rod b are respectively connected to the sliding bottom frame through connecting seats.

[0013] Preferably, one end of the second sliding frame away from the second bag - holding hoop is connected with a second rotating shaft, the second rotating shaft is rotatably connected with the second movable bracket through a bearing, and the upper and lower ends on both sides of the second movable bracket are respectively rotatably connected with second limiting rotating rods;

[0014] The bottom end of the second sliding frame is connected with a second connecting shaft, both ends of the second connecting shaft are connected with the second movable bracket through connecting seats, the second connecting shaft is connected with a second movable curved rod, the other end of the second movable curved rod is hinged on the output end of the second movable cylinder through a hinge seat, and the second movable cylinder drives the second sliding frame to move through the second movable curved rod.

[0015] Preferably, a second limiting guide rod a is arranged below the two second limiting rotating rods on the upper part of the second movable bracket. The two second limiting rotating rods on the upper part of the second movable bracket are respectively and limit-connected to the second limiting guide rod a through pin shafts. Two ends of the second limiting guide rod a are respectively connected to the sliding chassis through connecting seats;

[0016] A second limiting guide rod b is arranged above the two second limiting rotating rods on the lower part of the second movable bracket. The two second limiting rotating rods on the lower part of the second movable bracket are respectively in limit contact with the second limiting guide rod b through pin shafts. Two ends of the second limiting guide rod b are respectively connected to the sliding chassis through connecting seats.

[0017] The beneficial effects of the present utility model are as follows: The purpose of the present utility model is to provide a limiting mechanism for a plastic particle packaging machine. This limiting mechanism is an improved and added component on the existing packaging machine equipment, which is used to clamp and limit the packaging bag filled with plastic particles. Through this limiting mechanism, not only can it play a role in supporting, stabilizing and limiting the packaging bag filled with plastic particles, but also, through this limiting mechanism, the packaging machine equipment for packaging the plastic particle packaging bag can better seal the top of the packaging bag, avoiding the plastic particles in the packaging bag spilling out of the packaging bag before sealing due to sealing quality problems, resulting in waste of raw materials. Description of the Drawings

[0018] Figure 1 is a schematic structural diagram of a limiting mechanism for a plastic particle packaging machine of the present utility model;

[0019] Figure 2 is a partially exploded schematic structural diagram of a limiting mechanism for a plastic particle packaging machine of the present utility model;

[0020] In the figure, 21 - sliding chassis, 22 - first bag - holding hoop, 23 - second bag - holding hoop, 221 - first sliding frame, 222 - first movable bracket, 223 - first limiting rotating rod, 224 - first movable curved rod, 225 - first movable cylinder, 231 - second sliding frame, 232 - second movable bracket, 233 - second limiting rotating rod, 234 - second movable curved rod, 235 - second movable cylinder. Detailed Embodiment

[0021] In order to make the purpose, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the drawings and embodiments.

[0022] Such as Figures 1 to 2As shown in the figure, a limiting mechanism for a plastic particle packaging machine. This limiting mechanism is an improved and added component on the existing packaging machine equipment, used to clamp and limit the plastic particle-filled packaging bags. Through this limiting mechanism, it can support and stabilize the plastic particle-filled packaging bags, playing a role in limiting, and preventing the plastic particles in the packaging bags from spilling out before sealing, thus avoiding waste of raw materials. This limiting mechanism is arranged below the frame shell of the packaging machine equipment, and this set limiting mechanism is used to limit and stabilize the plastic particle-filled packaging bags. At the same time, this limiting mechanism includes a sliding bottom frame 21. One side end of the sliding bottom frame 21 is fixed on the frame of the packaging machine equipment, and an activity structure that can be movably arranged and is used to limit and clamp the plastic particle-filled packaging bags is installed on the sliding bottom frame 21. Moreover, this improved and added activity structure includes a first bag clamping hoop 22 and a second bag clamping hoop 23. The first bag clamping hoop 22 and the second bag clamping hoop 23 are arranged to move relative to each other, used to limit and clamp the plastic particle-filled packaging bags. When implementing packaging and sealing, the plastic bag for packaging plastic particles is transported and moved to the bottom plate of the sliding bottom frame 21 through the existing technology (the conveying system of the packaging machine equipment). Then, the packaging machine equipment transports and fills the plastic particles that need to be sealed and transported to the factory building for processing into this packaging bag. At this time, the packaging bag is placed on the bottom plate of the sliding bottom frame 21. The bottom plate of the sliding bottom frame 21 is used to support the plastic particles in the packaging bag. And as the plastic particles in the packaging bag increase, the set activity structure plays a role in limiting and stabilizing this packaging bag, preventing the plastic particles in the packaging bag from spilling.

[0023] Furthermore, in the embodiment, a first connecting rod is hinged to the end face of the first bag-holding hoop 22 on the side away from the second bag-holding hoop 23. The other end of the first connecting rod is hinged to the first sliding frame 221. A first deformation spring is disposed through the first connecting rod. One end of the first deformation spring is connected to the first bag-holding hoop 22, and the other end of the first deformation spring is connected to the first sliding frame 221. Moreover, a first rotating shaft is connected to the end of the first sliding frame 221 away from the first bag-holding hoop 22. The first rotating shaft is rotatably connected to the first movable bracket 222 through a bearing. The upper and lower ends on both sides of the first movable bracket 222 are respectively rotatably connected to first limiting rotating rods 223. Also, a first connecting shaft is connected to the bottom end of the first sliding frame 221. Both ends of the first connecting shaft are connected to the first movable bracket 222 through connecting seats. The first connecting shaft is connected to a first movable curved rod 224 (the first connecting shaft is hinged to the first movable curved rod 224). The other end of the first movable curved rod 224 is hinged to the output end of the first movable cylinder 225 through a hinge seat. The first movable cylinder 225 drives the first sliding frame 221 to move through the first movable curved rod 224. Since the connection structure provided for the second bag-holding hoop 23 is similar to that of the first bag-holding hoop 22, therefore, by the same token, a second connecting rod is hinged to the end face of the second bag-holding hoop 23 on the side away from the first bag-holding hoop 22. The other end of the second connecting rod is hinged to the second sliding frame 231. A second deformation spring is disposed through the second connecting rod. One end of the second deformation spring is connected to the second bag-holding hoop, and the other end of the second deformation spring is connected to the second sliding frame 231. At the same time, a second rotating shaft is connected to the end of the second sliding frame 231 away from the second bag-holding hoop 23. The second rotating shaft is rotatably connected to the second movable bracket 232 through a bearing. The upper and lower ends on both sides of the second movable bracket 231 are respectively rotatably connected to second limiting rotating rods 233. And, a second connecting shaft is connected to the bottom end of the second sliding frame 231. Both ends of the second connecting shaft are connected to the second movable bracket 232 through connecting seats. The second connecting shaft is connected to a second movable curved rod 234 (the second connecting shaft is hinged to the second movable curved rod 234). The other end of the second movable curved rod 234 is hinged to the output end of the second movable cylinder 235 through a hinge seat. The second movable cylinder 235 drives the second sliding frame 231 to move through the second movable curved rod 234.In this design, in the embodiment, by controlling the first movable cylinder 225 to drive the first sliding frame 221 to move, the first sliding frame 221 drives the first bag-holding hoop 22 to move; similarly, by controlling the second movable cylinder 235 to drive the second sliding frame 231 to move, the second sliding frame 231 drives the second bag-holding hoop 23 to move; thus, finally, by controlling the relative movement and approach of the first bag-holding hoop 22 and the second bag-holding hoop 23, the packaging bag filled with plastic particles placed between the first bag-holding hoop 22 and the second bag-holding hoop 23 is "position-limited and clamped", so as to ensure the "stability" of the center of gravity of the plastic particles in the packaging bag, facilitate the sealing mechanism of the packaging machine to seal the upper end of the packaging bag, and ensure the quality of the seal; avoid the plastic particles in the packaging bag from spilling out of the packaging bag before sealing, resulting in waste of raw materials.

[0024] Further, in the embodiment, a first limiting guide rod a is disposed below the two first limiting rotating rods 223 on the upper portion of the first movable bracket 222. The two first limiting rotating rods 223 on the upper portion of the first movable bracket 222 are respectively and limit-connected to the first limiting guide rod a through a pin shaft. Two ends of the first limiting guide rod a are respectively connected to the sliding chassis 21 through a connecting seat; a first limiting guide rod b is disposed above the two first limiting rotating rods 223 on the lower portion of the first movable bracket 222. The two first limiting rotating rods 223 on the lower portion of the first movable bracket 222 are respectively and limit-connected to the first limiting guide rod b through a pin shaft. Two ends of the first limiting guide rod b are respectively connected to the sliding chassis 21 through a connecting seat. Moreover, a second limiting guide rod a is disposed below the two second limiting rotating rods 233 on the upper portion of the second movable bracket 232. The two second limiting rotating rods 233 on the upper portion of the second movable bracket 232 are respectively and limit-connected to the second limiting guide rod a through a pin shaft. Two ends of the second limiting guide rod a are respectively connected to the sliding chassis 21 through a connecting seat; a second limiting guide rod b is disposed above the two second limiting rotating rods 233 on the lower portion of the second movable bracket 232. The two second limiting rotating rods 233 on the lower portion of the second movable bracket 232 are respectively and limit-connected to the second limiting guide rod b through a pin shaft. Two ends of the second limiting guide rod b are respectively connected to the sliding chassis 21 through a connecting seat. With such a design, the "positions" of the first bag clamping hoop 22 and the second bag clamping hoop 23 can be adjusted as needed, so as to facilitate "clamping and limiting" different packaging bags to meet the packaging requirements; moreover, both the first bag clamping hoop 22 and the second bag clamping hoop 23 are "flexibly arranged", which plays a certain protective role for the limited and clamped packaging bags and the plastic particles in the packaging bags. In terms of the structure of the added and improved limiting mechanism, the limiting mechanism can not only be used to support, stabilize and limit the packaging bags filled with plastic particles, but also enable the packaging machine equipment for packaging the plastic particle packaging bags to better seal the top of the packaging bags, avoiding the plastic particles in the packaging bags spilling out of the packaging bags before sealing due to sealing quality problems, resulting in waste of raw materials.

[0025] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details in the above-described embodiments in the specification. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

Claims

1. A limiting mechanism for a plastic granule packaging machine, characterized in that: It comprises a sliding chassis, one side end of which is fixed on the frame of the packaging machine, and a movable structure which can be movably arranged and can limit and clamp the packaging bag containing plastic particles is installed on the sliding chassis; The movable structure comprises a first bag holding hoop and a second bag holding hoop, wherein the first bag holding hoop and the second bag holding hoop are relatively movable and are used to limit and clamp the packaging bag containing plastic particles; A first connecting rod is hingedly connected to an end surface of one side of the first bag holding hoop away from the second bag holding hoop, the other end of the first connecting rod is hingedly connected to the first sliding frame, a first deformation spring is passed through the first connecting rod, one end of the first deformation spring is connected to the first bag holding hoop, and the other end of the first deformation spring is connected to the first sliding frame; A second connecting rod is hinged on the end face of the second bag holding hoop on one side away from the first bag holding hoop, and the other end of the second connecting rod is hinged on the second sliding frame. A second deformation spring is passed through the second connecting rod, and one end of the second deformation spring is connected to the second bag holding hoop, and the other end of the second deformation spring is connected to the second sliding frame.

2. A limiting mechanism for a plastic granule packaging machine according to claim 1, characterized in that: The first sliding frame is connected to a first rotating shaft at one end away from the first bag holding hoop, the first rotating shaft is rotatably connected to the first movable bracket through a bearing, and the upper and lower ends of both sides of the first movable bracket are rotatably connected to first limit rotating rods respectively; The bottom end of the first sliding frame is connected to a first connecting shaft, both ends of the first connecting shaft are connected to the first movable bracket through a connecting seat, the first connecting shaft is connected to a first movable bent rod, the other end of the first movable bent rod is hinged to the output end of the first movable cylinder through a hinge seat, and the first movable cylinder drives the first sliding frame to move through the first movable bent rod.

3. A limiting mechanism for a plastic granule packaging machine according to claim 2, characterized in that: A first limiting guide rod a is provided below the two first limiting rotating rods on the upper part of the first movable bracket, the two first limiting rotating rods on the upper part of the first movable bracket are respectively connected to the first limiting guide rod a through a pin shaft, and both ends of the first limiting guide rod a are respectively connected to the sliding base through a connecting seat; A first limiting guide rod b is arranged above the two first limiting rotating rods at the lower part of the first movable bracket. The two first limiting rotating rods at the lower part of the first movable bracket are respectively connected to the first limiting guide rod b through a pin shaft, and the two ends of the first limiting guide rod b are respectively connected to the sliding base through a connecting seat.

4. A limiting mechanism for a plastic granule packaging machine according to claim 3, characterized in that: The second sliding frame is connected to a second rotating shaft at one end away from the second bag holding hoop, and the second rotating shaft is rotatably connected to the second movable bracket through a bearing, and the upper and lower ends of both sides of the second movable bracket are rotatably connected to second limit rotating rods respectively; The bottom end of the second sliding frame is connected to a second connecting shaft, both ends of the second connecting shaft are connected to the second movable bracket through a connecting seat, the second connecting shaft is connected to a second movable bent rod, the other end of the second movable bent rod is hinged to the output end of the second movable cylinder through a hinge seat, and the second movable cylinder drives the second sliding frame to move through the second movable bent rod.

5. A limiting mechanism for a plastic granule packaging machine according to claim 4, characterized in that: A second limiting guide rod a is provided below the two second limiting rotating rods on the upper part of the second movable bracket, the two second limiting rotating rods on the upper part of the second movable bracket are respectively connected to the second limiting guide rod a through a pin shaft, and the two ends of the second limiting guide rod a are respectively connected to the sliding base through a connecting seat; A second limiting guide rod b is arranged above the two second limiting rotating rods at the lower part of the second movable bracket. The two second limiting rotating rods at the lower part of the second movable bracket are respectively in limiting contact with the second limiting guide rod b through pin shafts, and both ends of the second limiting guide rod b are respectively connected to the sliding base through connecting seats.

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