Pneumatic removing device for empty bags neglected to be loaded on production line

Abstract

The utility model discloses a pneumatic removing device for empty bags neglected to be loaded on a production line, which comprises a support, an air cylinder is arranged on the support, two connectors of the air cylinder are respectively connected with an electromagnetic valve through air pipes, a push plate is arranged at the telescopic end of the air cylinder, and the air pipe controlling the air cylinder to extend out is communicated with an air blowing pipe. The air outlet end of the air blowing pipe is provided with an air blowing nozzle, and when the air cylinder stretches out, the air blowing nozzle blows air synchronously. According to the empty bag removing device, empty bags can be effectively removed in the salt packaging and weighing process, the empty bags are prevented from entering the subsequent boxing procedure, reliable removing of the empty bags is achieved, and market risks are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of salt production, in particular to a pneumatic rejecting device for empty bags that are leaked from a production line. Background Art

[0002] During the salt production and packaging process, the powdered and granular salt needs to be automatically packed into pre-made bags or roll-film bags by fully automatic packaging equipment for sealing and forming for easy storage and transportation. In order to ensure that the weight of each bag of salt meets the measurement standard range corresponding to the product specifications, the bagged salt needs to be weighed to determine whether the weight of each bag of salt meets the standard. Bags of salt that do not meet the standard need to be automatically removed from the production line to avoid flowing into subsequent links.

[0003] For large-scale production of bagged salt, in order to achieve weighing continuity and improve weighing efficiency, online re-inspection scales and over-limit rejection devices are generally used. The packaged bagged salt products are sent to the online re-inspection scale through the conveyor line, and the weight of the bagged salt on the conveyor belt is measured by the re-inspection scale sensor. When the weight of the bagged salt does not meet the specified range, the solenoid valve of the rejection device is energized, the cylinder is activated, and the over-limit bagged salt is pushed out from one side of the conveyor belt to the other side of the conveyor belt.

[0004] In actual production, if the weight of the bagged salt is within the upper and lower limits set by the weighing sensor, it can pass smoothly; if the detected weight exceeds the limit, the cylinder of the rejection device will be removed. However, empty bags occasionally appear during production. Empty bags are an extreme lower limit because the weight is almost 0. First, when the empty bags are rejected, there is a gap of about 3mm between the rejection device and the conveyor belt, and the empty small bags may pass through the gap and cannot be effectively rejected. Second, because the empty bags are too light, the instantaneous rejection action cannot effectively remove the empty bags from the conveyor belt, causing the empty bags to enter the next packing process, which poses a market risk. Utility Model Content

[0005] The purpose of the utility model is to provide a pneumatic rejection device for empty bags that are missed in a production line, which can effectively reject empty bags during the salt production process, prevent the empty bags from flowing into subsequent packing processes, and reduce market risks.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a pneumatic rejection device for empty bags that are missed in a production line, comprising a bracket, a cylinder is provided on the bracket, two interfaces of the cylinder are respectively connected to the solenoid valve through an air pipe, a push plate is provided on the telescopic end of the cylinder, and an air blowing pipe is connected to the air pipe that controls the extension of the cylinder, and an air outlet nozzle is provided at the air outlet of the air blowing pipe, and the air blowing nozzle blows air synchronously when the cylinder is extended.

[0007] A further improvement of the utility model is that the air pipe for controlling the extension of the cylinder is divided into two sections, the two sections of the air pipe are connected through a first three-way joint, and the air blowing pipe is connected to a remaining interface of the first three-way joint.

[0008] A further improvement scheme of the utility model is that the blowing pipe includes a connecting section and two blowing sections, the air inlet end of the connecting section is connected to the air pipe, the air outlet end of the connecting section is connected to one of the interfaces of the second three-way joint, the two blowing sections are respectively connected to the remaining two interfaces of the second three-way joint, and the air outlet end of the blowing section is provided with the blowing nozzle, and the two blowing nozzles are respectively located on both sides of the cylinder.

[0009] A further improvement of the utility model is that a transparent baffle is provided above the cylinder via a support rod.

[0010] A further improvement of the utility model is that a vertical plate is provided on the bracket, the cylinder is arranged on the vertical plate, and the telescopic end of the cylinder passes through the vertical plate and is connected to the push plate.

[0011] A further improvement of the utility model is that a guide rod parallel to the cylinder is horizontally provided on one side of the cylinder, the guide rod includes a sleeve and a guide rod slidably connected in the sleeve, a sliding opening slidably connected to the guide rod is provided on the vertical plate, and the guide rod passes through the vertical plate and is connected to the push plate.

[0012] The beneficial effects of the utility model are:

[0013] The utility model can effectively remove empty bags in the salt production process by cooperating with the push plate and the blowing nozzle, so as to prevent the empty bags from flowing into the subsequent packing process and reduce the risk of entering the market.

[0014] The utility model provides the first three-way joint so that the blowing nozzle and the cylinder use the same power source, thereby improving the utilization rate of the power source, and can realize the synchronous action of the blowing nozzle and the cylinder, thereby realizing the reliable rejection of empty bags.

[0015] The utility model divides the air blowing pipe into two air blowing sections by arranging the second three-way joint, which are led to two air blowing nozzles, and can simultaneously blow air from both sides of the push plate, thereby further improving the rejection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the main structure of the utility model.

[0017] In the figure, 1- bracket, 2- cylinder, 3- air pipe, 4- electromagnetic valve, 5- push plate, 6- blowing nozzle, 7- first three-way joint, 8- connecting section, 9- blowing section, 10- second three-way joint, 11- transparent baffle, 12- vertical plate, 13- sleeve, 14- guide rod. DETAILED DESCRIPTION

[0018] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. Example

[0019] Combination Figure 1 It can be seen that a pneumatic rejection device for empty bags that are missing from a production line includes a bracket 1, a cylinder 2 is arranged on the bracket 1, two interfaces of the cylinder 2 are respectively connected to the electromagnetic valve 4 through the air pipe 3, and a push plate 5 is arranged on the telescopic end of the cylinder 2. The characteristics are: the air pipe 3 that controls the extension of the cylinder 2 is connected to a blowing pipe, and the air outlet end of the blowing pipe is provided with a blowing nozzle 6, and the blowing nozzle 6 blows synchronously when the cylinder 2 is extended. An air compressor that provides power for the cylinder 2 is arranged on one side of the electromagnetic valve 4.

[0020] The air pipe 3 extending from the control cylinder 2 is divided into two sections, the two sections of the air pipe are connected through a first three-way joint 7, and the air blowing pipe is connected to a remaining interface of the first three-way joint 7.

[0021] Preferably, the air outlet direction of the blowing nozzle 6 is inclined, and the airflow ejected therefrom can contact the conveying surface of the bagged salt conveyor belt, thereby facilitating the blowing away of the empty bags.

[0022] The blowing pipe includes a connecting section 8 and two blowing sections 9. The air inlet end of the connecting section 8 is connected to the air pipe 3, and the air outlet end of the connecting section 8 is connected to one of the interfaces of the second three-way joint 10. The two blowing sections 9 are respectively connected to the remaining two interfaces of the second three-way joint 10. The air outlet end of the blowing section 9 is provided with a blowing nozzle 6, and the two blowing nozzles 6 are respectively located on both sides of the cylinder 2.

[0023] Preferably, a transparent baffle 11 is provided above the cylinder 2 through a support rod, which is convenient for observation and limits the movement range of the blown empty bag.

[0024] A vertical plate 12 is provided on the bracket 1 , and the cylinder 2 is arranged on the vertical plate 12 . The telescopic end of the cylinder 2 passes through the vertical plate 12 and is connected to the push plate 5 .

[0025] A guide rod parallel to the cylinder 2 is horizontally arranged on one side thereof, the guide rod comprising a sleeve 13 and a guide rod 14 slidably connected in the sleeve 13, a sliding opening slidably connected to the guide rod 14 is arranged on the vertical plate 12, and the guide rod 14 passes through the vertical plate and is connected to the push plate 5. The guide rod 14 improves the stability of the cylinder operation.

[0026] The working principle of a pneumatic rejection device for empty bags missed in a production line provided by the utility model is as follows: when it is detected that the weight of the bagged salt does not meet the standard, the solenoid valve 4 supplies air to the air pipe 3 extending from the control cylinder 2, and the airflow is diverted through the first three-way joint 7, and part of it enters the air blowing pipe. When the cylinder 2 drives the push plate 5 to be pushed out, the air blowing nozzle 6 sprays out the airflow, and the push plate and the airflow cooperate to push the bagged salt away from the conveyor belt. When the bagged salt is an empty bag, it can be effectively blown away by the airflow. In the process of salt production, the empty bags can be effectively rejected to prevent the empty bags from flowing into the subsequent packing process, thereby reducing market risks.

[0027] In the description of the present utility model, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model. Any equivalent structure or equivalent process transformation made using the contents of the utility model specification and the accompanying drawings, or directly or indirectly used in other related technical fields, are similarly included in the patent protection scope of the present utility model.

Claims

1. A pneumatic rejection device for empty bags that are leaking from a production line, comprising a bracket (1), a cylinder (2) being provided on the bracket (1), two interfaces of the cylinder (2) being connected to a solenoid valve (4) through an air pipe (3) respectively, a push plate (5) being provided on the telescopic end of the cylinder (2), characterized in that: The air pipe (3) for controlling the extension of the air cylinder (2) is connected to an air blowing pipe, and an air blowing nozzle (6) is provided at the air outlet end of the air blowing pipe. When the air cylinder (2) is extended, the air blowing nozzle (6) blows air synchronously.

2. The pneumatic rejection device for empty bags on a production line according to claim 1, characterized in that: The air pipe (3) for controlling the extension of the air cylinder (2) is divided into two sections, the two sections of the air pipe are connected via a first three-way joint (7), and the air blowing pipe is connected to a remaining interface of the first three-way joint (7).

3. A pneumatic rejection device for empty bags in a production line according to claim 1 or 2, characterized in that: The air blowing pipe comprises a connecting section (8) and two air blowing sections (9); the air inlet end of the connecting section (8) is connected to the air pipe (3); the air outlet end of the connecting section (8) is connected to one of the interfaces of the second three-way joint (10); the two air blowing sections (9) are respectively connected to the remaining two interfaces of the second three-way joint (10); the air outlet end of the air blowing section (9) is provided with the air blowing nozzle (6); the two air blowing nozzles (6) are respectively located on both sides of the cylinder (2).

4. The pneumatic rejection device for empty bags in a production line according to claim 1 is characterized by: A transparent baffle (11) is provided above the cylinder (2) via a support rod.

5. The pneumatic rejection device for empty bags in a production line according to claim 1 is characterized by: The bracket (1) is provided with a vertical plate (12), the cylinder (2) is arranged on the vertical plate (12), and the telescopic end of the cylinder (2) passes through the vertical plate (12) and is connected to the push plate (5).

6. The pneumatic rejection device for empty bags in a production line according to claim 5, characterized in that: A guide rod parallel to the cylinder (2) is horizontally provided on one side thereof, the guide rod comprising a sleeve (13) and a guide rod (14) slidably connected to the sleeve (13), the vertical plate (12) is provided with a sliding opening slidably connected to the guide rod (14), and the guide rod (14) passes through the vertical plate and is connected to the push plate (5).

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