Empty pressing and covering bag removing device

Abstract

The utility model belongs to the technical field of packaging equipment, and relates to an empty bag removing device, in particular to a pressing and covering empty bag removing device which comprises two sections of conveying devices, a first section of conveying device is composed of a first conveying belt and a first belt motor, and a second section of conveying device is composed of a second conveying belt and a second belt motor. The rolling wheel device is arranged between the two sections of conveying devices and comprises rolling wheels, and the upper ends of the rolling wheels are flush with or slightly higher than the first conveying belt and the second conveying belt; the rolling brush device comprises a rolling brush and a supporting rod used for adjusting the distance between the rolling brush and the rolling wheel, and the rolling brush is arranged over the rolling wheel; the blowing device is arranged on one side of the second-section conveying device and used for blowing the empty bags on the second conveying belt. According to the device, empty bags pressed and covered by normal products can be separated from the normal products, and then the normal products are removed, so that not only can independent empty bags be removed, but also the pressed and covered empty bags can be removed.

Description

Technical Field

[0001] The utility model belongs to the technical field of packaging equipment and relates to an empty bag rejection device, in particular to a pressed empty bag rejection device. Background Art

[0002] During the packaging process of bagged products, the packaging production line usually uses a bag blowing mechanism such as compressed air to separate the empty bags without products from the normal products and remove the empty bags. For example, during the packaging process of bagged ice cream, the ice cream is heat-sealed after the air is exhausted by the roller brush of the packaging machine, and then pushed onto the conveyor belt under the friction of the roller brush. Since the empty bags without ice cream are light in weight and can be easily blown away by compressed air, the empty bags are generally blown away by the purge effect of compressed air during the transmission process. Normal products have their own weight, so they can continue to be transported and enter the boxing stage.

[0003] However, in the above process, since the packaging machine runs very fast, up to 2 to 3 bags per second, a special situation may occur, that is, when an empty bag is generated, the empty bag in front without ice cream may be pressed under by the normal product with ice cream in the back, and the compressed air blowing empty bag mechanism in the back loses its effect. This results in that the empty bag covered by the normal product cannot be removed. Based on the above problem, the present invention designs an empty bag removal device, especially a removal device for covered empty bags. Utility Model Content

[0004] The purpose of the utility model is to solve the above-mentioned problems existing in the prior art, and a device for removing covered empty bags is proposed, which can separate the empty bags covered by normal products from the normal products and then remove them, so that both individual empty bags and covered empty bags can be removed.

[0005] The technical solution of the utility model is:

[0006] A device for rejecting pressed empty bags, comprising:

[0007] A two-stage transmission device, wherein the first-stage transmission device is composed of a first transmission belt and a first belt motor, and the second-stage transmission device is composed of a second transmission belt and a second belt motor;

[0008] A roller device, arranged between the two sections of the transmission device, comprises a roller, the upper end of which is flush with or slightly higher than the first transmission belt and the second transmission belt;

[0009] A roller brush device, comprising a roller brush and a support rod for adjusting the distance between the roller brush and the roller, wherein the roller brush is arranged directly above the roller;

[0010] The purge device is arranged at one side of the two-stage conveyor and is used for purging the empty bags on the second conveyor belt.

[0011] Furthermore, the distance between the roller and the roller brush is adjusted according to the thickness of the product conveyed by the transmission device. The height or position of the roller brush can be adjusted by a cable connecting the roller brush and the support rod. Similarly, the roller is also connected to the support rod, and the height or position of the roller can be adjusted by a cable connecting the roller and the support rod; thereby adjusting the distance between the roller and the roller brush.

[0012] Furthermore, the running speed of the first conveyor belt is V1, the running speed of the second conveyor belt is V2, the running speed of the roller is V3, and the running speed of the roller brush is V4; wherein the magnitudes of the speeds satisfy V3>V1>V2>V4.

[0013] Furthermore, the first belt motor drives the first conveyor belt to run clockwise at a speed V1, and the second belt motor drives the second conveyor belt to run clockwise at a speed V2, and V1>V2.

[0014] Furthermore, the roller brush rolls counterclockwise at a speed V3, and the roller rolls counterclockwise at a speed V4, and V3>V4.

[0015] Furthermore, the upper end surface of the roller is higher than the upper end surfaces of the first conveyor belt and the second conveyor belt by 0.5 to 1 cm.

[0016] Furthermore, the upper end surfaces of the first conveyor belt and the second conveyor belt are located on the same horizontal plane.

[0017] Furthermore, the roller may be replaced by a negative pressure adsorption device.

[0018] Beneficial effects of the utility model:

[0019] The utility model provides a device for rejecting covered empty bags, which separates the empty bags covered by normal products from the products through two-stage transmission devices with different operating speeds in cooperation with a roller brush, and then rejects the empty bags through a subsequent compressed air blowing device; the separation function of the rejection device enables the subsequent blowing device to work effectively, and can reject both individual empty bags and covered empty bags without interfering with the transportation of normal products. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the overall structure of the device provided by the utility model;

[0021] Figure 2 This is a schematic diagram of the overall structure of the device provided by the utility model after using the negative pressure adsorption device;

[0022] In the above figures, 1. first conveyor belt; 2. first belt motor; 3. second conveyor belt; 4. second belt motor; 5. roller brush; 6. roller; 7. support rod; 8. purge device. DETAILED DESCRIPTION

[0023] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0024] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "inside", "outside", "upper", "lower", "between", etc. are based on the positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0025] like Figure 1 As shown, the utility model relates to a device for rejecting pressed empty bags, comprising a two-stage transmission device, a purge device 8, and a roller device and a roller brush device arranged between the two-stage transmission devices. The two-stage transmission device comprises a one-stage transmission device composed of a first transmission belt 1 and a first belt motor 2, and a second-stage transmission device composed of a second transmission belt 3 and a second belt motor 4, and the roller device is arranged directly below the roller brush device. When the whole device is running, the product starts from the first transmission belt 1, passes through the roller device and then enters the second transmission belt 3, and the upper end surfaces of the first transmission belt 1 and the second transmission belt 3 are located on the same horizontal plane.

[0026] The roller device includes a roller 6, a motor for driving the roller 6 to rotate, and a support rod 7. The support rod 7 and the roller 6 can be connected by a connecting piece such as a cable, and the height of the roller 6 in the vertical direction can be adjusted by controlling the cable. The height of the roller 6 needs to satisfy that the upper end surface of the roller 6 is flush with the first conveyor belt 1 and the second conveyor belt 3, or the upper end surface is slightly higher than the first conveyor belt 1 and the second conveyor belt 3; in this specific embodiment, the upper end surface of the roller 6 is 0.5 to 1 cm higher than the upper end surface of the first conveyor belt 1 and the second conveyor belt 3 by 0.5 to 1 cm, preferably 0.5 cm, which can be adjusted according to the packaging film of different products. This slight height difference, combined with different conveying speeds, is more conducive to the separation of normal products from compressed empty bags.

[0027] The roller brush device includes a roller brush 5, a motor for driving the roller brush 5 to rotate, and a support rod 7. The roller brush 5 is arranged directly above the roller 6. The support rod 7 and the roller brush 5 are connected by a connecting member such as a cable. The distance between the roller brush 5 and the roller 6 is adjusted by controlling the cable. This distance is adjusted according to the thickness of the product being transported. In this specific embodiment, the product being transported is packaged ice cream. Then, by adjusting the support rod 7, the relative distance between the roller brush 5 and the roller 6 can be adjusted, and the contact pressure between the roller brush 5 and the roller 6 can be adjusted according to the thickness of the ice cream.

[0028] It should be noted that the first conveyor belt 1 and the second conveyor belt 3 have different operating speeds. Due to the speed difference between the first conveyor belt 1 and the second conveyor belt 3, the greater the mass, the greater the inertia. Based on this feature, the normal products are separated from the compressed empty bags. The first belt motor 2 drives the first conveyor belt 1 to run clockwise at a speed of V1, and the second belt motor 4 drives the second conveyor belt 3 to run clockwise at a speed of V2. The speeds of the two satisfy V1>V2. In a specific embodiment, the first belt motor 2 drives the first conveyor belt 1 at a speed of V1=6m / s, and the second belt motor 4 drives the second conveyor belt 3 at a speed of V2=4m / s.

[0029] Furthermore, the motor drives the roller brush 5 to roll counterclockwise at a speed V3, and the motor drives the roller 6 to roll counterclockwise at a speed V4, and the speeds of the two satisfy V3>V4. In a specific embodiment, the speed V3=7m / s, and the speed V4=3m / s. In general, the running speed V1 of the first conveyor belt 1, the running speed V2 of the second conveyor belt 3, the running speed V3 of the roller 6, and the running speed V4 of the roller brush 5 satisfy V3>V1>V2>V4.

[0030] From the perspective of product conveying direction, the blowing device 8 is installed after the roller 6 device and the roller brush 5 device. Specifically, it is arranged on one side of the second conveyor belt 3 and is used to blow away the empty bags on the second conveyor belt 3.

[0031] During the actual production process, when an empty bag is pressed under a normal product, the two first run synchronously at a high speed (6 meters per second) on the first conveyor belt 1. When reaching the position of the roller brush 5 and the roller 6, the normal product on the top is subject to relative acceleration by the roller brush 5 (7 meters per second, i.e., a speed of 1 plus 1 relative to 6 meters per second), and the empty bag below is subject to relative deceleration by the roller 6 (3 meters per second, i.e., a speed of 3 minus 3 relative to 6 meters per second). In this way, there is a speed difference between the normal product and the empty bag, and they will separate when entering the second conveyor belt 3 and run at a speed of 4 meters per second; then, the compressed air of the purge device 8 will blow the separate empty bag away from the second conveyor belt 3, while the normal product will not be blown away due to its sufficient self-weight, thereby achieving the removal of the empty bag.

[0032] In another specific embodiment, the roller 6 can be replaced with a negative pressure adsorption device, such as a suction cup, etc., and the suction force can be adjusted so that normal products can pass through, while empty bags or empty bags covered by normal products are adsorbed downward, thereby achieving the purpose of removing empty bags.

[0033] The above description is only a preferred embodiment of the utility model, and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments, or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, modification, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A device for rejecting covered empty bags, characterized in that: include: A two-stage transmission device, wherein the first-stage transmission device is composed of a first transmission belt and a first belt motor, and the second-stage transmission device is composed of a second transmission belt and a second belt motor; A roller device, arranged between the two sections of the transmission device, comprises a roller, the upper end of which is flush with or slightly higher than the first transmission belt and the second transmission belt; A roller brush device, comprising a roller brush and a support rod for adjusting the distance between the roller brush and the roller, wherein the roller brush is arranged directly above the roller; A purge device, arranged on one side of the two-stage conveyor device and used for purging the empty bags on the second conveyor belt; The running speed of the first conveyor belt is V1, the running speed of the second conveyor belt is V2, the running speed of the roller is V3, and the running speed of the roller brush is V4; wherein the magnitudes of the speeds satisfy V3>V1>V2>V4.

2. The rejecting device according to claim 1, characterized in that: The distance between the roller and the roller brush is adjusted according to the thickness of the product conveyed by the transmission device.

3. The rejecting device according to claim 1, characterized in that: The first belt motor drives the first conveyor belt to run clockwise at a speed V1, and the second belt motor drives the second conveyor belt to run clockwise at a speed V2, where V1>V2.

4. The rejecting device according to claim 1, characterized in that: The roller brush rolls counterclockwise at a speed V3, and the roller rolls counterclockwise at a speed V4, where V3>V4.

5. The rejecting device according to claim 1, characterized in that: The upper end surface of the roller is higher than the upper end surfaces of the first conveyor belt and the second conveyor belt by 0.5 to 1 cm.

6. The rejecting device according to claim 1, characterized in that: The upper end surfaces of the first conveyor belt and the second conveyor belt are located on the same horizontal plane.

7. The rejecting device according to claim 1, characterized in that: The roller can be replaced by a negative pressure adsorption device.

Images