Metal can air conveying device with removing function and automatic removing method

Abstract

A metal can air conveying device with a removing function is arranged between a front conveying mechanism and a rear conveying mechanism and comprises an air conveying body. The air conveying body comprises a removing mechanism and a conventional air conveying mechanism which are arranged in the metal can conveying direction, the removing mechanism comprises a mounting frame fixed to the front conveying mechanism, and a plurality of rotary removing units are arranged on the mounting frame in the direction perpendicular to the metal can conveying direction. The rotary rejecting units are connected with rejecting action controllers respectively, the rejecting action controllers can drive the rotary rejecting units to rotate downwards from a horizontal state, and air conveying inclined holes are formed in the upper surfaces of the rotary rejecting units and above the conventional air conveying mechanism; a shielding mechanism is arranged above the air conveying body, and the metal can can penetrate through the space between the air conveying body and the shielding mechanism. On the basis of an original air conveying mechanism, the removing mechanism is additionally arranged, and metal cans can be removed under the condition that the machine is not stopped.

Description

Technical Field

[0001] The present invention relates to the technical field of pneumatic conveying devices for metal cans, and in particular to a pneumatic conveying device for metal cans with a rejection function and an automatic rejection method. Background Art

[0002] As shown in a metal can air conveying mechanism with publication number CN221396097U, different from the conventional conveyor belt transmission method, the air conveying mechanism can arrange the metal cans tightly and keep the metal cans moving in the process. In order to avoid the metal cans being blown down by the air conveying method, a shielding mechanism is also required. Therefore, when the deformed metal cans enter the air conveying mechanism, they cannot be removed manually, and the deformed metal cans are easily stuck in the position of the sorting and arranging mechanism, affecting the normal operation of the packaging line. Under normal circumstances, the deformed metal cans need to be removed after the shielding mechanism is moved, and the operation of the air conveying mechanism needs to be interrupted, thereby affecting the packaging efficiency. Summary of the invention

[0003] In order to solve the above-mentioned problem, the present invention provides a metal can air conveying device with a rejection function.

[0004] The technical solution of the present invention is as follows:

[0005] A metal can air conveying device with a rejection function, arranged between a front conveying mechanism and a rear conveying mechanism, comprising an air conveying body on the same horizontal plane as the front conveying mechanism and the rear conveying mechanism;

[0006] The air conveying body includes a rejection mechanism and a conventional air conveying mechanism arranged along the conveying direction of the metal cans. The rejection mechanism includes a mounting frame fixed to the front conveying mechanism. The mounting frame is provided with a plurality of rotating rejection units arranged in a direction perpendicular to the conveying direction of the metal cans, and the rotating rejection units are respectively connected to rejection action controllers, and the rejection action controllers can drive the rotating rejection units to rotate downward from a horizontal state, and the upper surface of the rotating rejection unit and the upper part of the conventional air conveying mechanism are both provided with air conveying inclined holes, and the opening direction of the air conveying inclined holes is the same as the conveying direction of the metal cans, and they are arranged to be inclined upward;

[0007] A shielding mechanism is arranged above the air conveying body, and the metal can can pass through between the air conveying body and the shielding mechanism, and the height between the air conveying body and the shielding mechanism cannot allow the metal can to fall over.

[0008] On the basis of the original air conveying mechanism, a rejection mechanism is added, which can remove the metal cans from the packaging line through the operation of the rejection mechanism without stopping the machine, and the rejection process will not affect other normal metal cans.

[0009] The specific structure of the above-mentioned rotating rejection unit is that the rotating rejection unit includes a rotating seat detachably connected to the mounting frame, the end of the rotating seat is rotatably connected to a pneumatic support bar, and the rotating plane of the pneumatic support bar is arranged parallel to the conveying direction of the metal can, and pneumatic inclined holes are arranged above the pneumatic support bar.

[0010] In order to avoid affecting other metal cans when rejecting deformed metal cans, a single metal can passing through the rejection mechanism is supported by at least four adjacent air conveying support bars during the same time period, and the same metal can cannot cross six adjacent air conveying support bars.

[0011] The specific structure of the above-mentioned rejection action controller is that the rejection action controller includes an air supply pipe connected to the air supply support bar, one end of the air supply pipe is connected to the air supply inclined hole, and the other end is provided with an air supply port and connected to the external air source structure, and the end of the air supply pipe away from the air supply support bar is also connected to the end of the telescopic unit and is driven to move by the telescopic unit.

[0012] The method for realizing the rotation switching state of the air delivery support bar is that a torsion spring is arranged between the air delivery support bar and the rotating seat, and the end of the air delivery support bar away from the rotating seat is an inclined surface and conflicts with the conventional air delivery mechanism. The air delivery support bar can conflict with the conventional air delivery mechanism under the action of the torsion spring, and can be driven by the telescopic unit and then pulled to rotate by the air delivery pipe.

[0013] As a preferred solution, the length of the air delivery support bar is less than 3 / 2 of the diameter of the metal can.

[0014] In order to ensure that deformed metal cans can be removed normally, the four adjacent air delivery support bars are simultaneously rotated downward to the extreme position, and the resulting gap can be passed vertically by the metal can.

[0015] In order to prevent the metal cans from being stagnant on the packaging line, within the same time period, a single metal can passing through the rejection mechanism is blown and moved by at least two adjacent air conveying inclined holes in the conveying direction of the metal cans.

[0016] In order to facilitate identification of the number of air conveying support bars across which a metal can spans, a reflective coating is provided on the upper surface of the air conveying support bars, and the reflective coatings of adjacent air conveying support bars are of different colors.

[0017] An automatic rejection method for a metal can air conveying device with a rejection function is also provided with a main control terminal, the output end of the main control terminal is connected to each telescopic unit, and the input end is connected to a visual recognition camera, the visual recognition camera is arranged above the rejection mechanism, and the shielding mechanism is provided with a transparent shielding plate between the rejection mechanism and the visual camera, and the main control terminal can drive the corresponding telescopic unit to drive the air conveying support bar to rotate downward after the visual recognition camera detects the deformed metal can. Human identification and control are no longer required, but monitoring feedback is performed through the visual recognition camera, and then the corresponding telescopic unit action is controlled by the active terminal.

[0018] The beneficial effects of the present invention are as follows: the present invention is a metal can air conveying device with a rejection function, which can reject deformed metal cans by adding a rejection mechanism on the basis of the existing structure, and will not affect the movement of other normal metal cans during the rejection process, and the above-mentioned rejection mechanism can cooperate with the main control terminal and the visual recognition camera to complete the recognition and rejection operations instead of manpower, thereby realizing the automation of the above-mentioned actions. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] By reading the detailed description of the preferred embodiment below, the scheme and advantages of the present application will become clear to those skilled in the art. The accompanying drawings are only for the purpose of illustrating the preferred embodiment and are not to be considered as limiting the present invention.

[0020] In the attached picture:

[0021] Figure 1 This is a schematic diagram of the structure of the present invention after being placed on a metal can packaging line;

[0022] Figure 2 This is a schematic diagram of the main structure of the air conveyor of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of the metal can rejection state of the present invention;

[0024] Figure 4 The present invention is a schematic diagram of the main structure of the air conveyor (with Figure 2 different states);

[0025] Figure 5 It is a schematic diagram of the structure of the rejecting mechanism of the present invention;

[0026] Figure 6 The schematic diagram of the structure of the rejection mechanism of the present invention (with Figure 5 different states);

[0027] Figure 7 This is a schematic diagram of the shielding mechanism structure of the present invention;

[0028] The components represented by the reference numerals in the figure are:

[0029] 1. Front conveying mechanism; 2. Air conveying body; 21. Rejection mechanism; 211. Mounting frame; 212. Rotating rejection unit; 2121. Rotating seat; 2122. Air conveying support bar; 2123. Air conveying inclined hole; 213. Rejection action controller; 2131. Telescopic unit; 2132. Air supply pipe; 2133. Air supply port; 22. Conventional air conveying mechanism; 3. Shielding mechanism; 31. Mobile frame; 32. Transparent shielding plate; 4. Arrangement mechanism; 5. Rear conveying mechanism; 6. Metal cans. DETAILED DESCRIPTION

[0030] like Figure 2 The metal can air conveying device with a rejection function is arranged between the front conveying mechanism 1 and the rear conveying mechanism 5, and the structure of the metal can 6 packaging line is as shown in FIG. Figure 1 As shown, after screening, they can be arranged by the sorting and arranging mechanism 4. In the patent previously applied for by the company, the above-mentioned sorting and arranging mechanism 4 will be provided with a metal can screening structure, but it is limited to the case where the deformation of the metal can body is large, and some metal cans are limited by the deformation and cannot directly enter the sorting and arranging mechanism 4. Therefore, there are problems in use. When the overall production qualification rate of the metal can 6 is high, it can still be used normally. When the yield of the metal can 6 is not high, the impact is greater. For this reason, the above-mentioned shielding mechanism 3 is set to a movable structure to facilitate the removal of the metal can 6 stuck in the position of the sorting and arranging structure 4. However, this structure is different. Different from the previous method, the present device is in the air conveying section, that is, the metal can 6 is removed. For this reason, the present device includes an air conveying body 2 on the same horizontal plane as the front conveying mechanism 1 and the rear conveying mechanism 5.

[0031] The same as the air conveying mechanism 2 of the existing device, it can push the metal can 6 forward by blowing air, and the air conveying body 2 includes a rejection mechanism 21 and a conventional air conveying mechanism 22 arranged along the conveying direction of the metal can 6, wherein the conventional air conveying mechanism 22 does not need to be introduced, and has been described in detail in the previous application documents of the company, and the key point is that the rejection mechanism 21 includes a mounting frame 211 fixed to the front conveying mechanism 1, and the mounting frame 211 is arranged along a direction perpendicular to the conveying direction of the metal can 6. The purpose of setting up multiple rotating rejection units 212 is to reject a single metal can 6 according to demand, and during the rejection process, it cannot affect the normal air conveying of other normal metal cans 6. For this reason, the rotating rejection units 212 are respectively connected to rejection action controllers 213, and each of the rejection action controllers 213 can drive the rotating rejection unit 212 to rotate downward from a horizontal state. Under normal conditions, the rotating rejection unit 212 is in a horizontal state, and can then be normally air conveyed. After it rotates, as Figure 5-6As shown, an aisle space can be generated, and the metal can 6 can lose the air conveying driving force and then fall freely into the empty cavity below. For this reason, a collection mechanism can be set below the above-mentioned rotating rejection unit 212. The details are not repeated here. It should be noted that in order to ensure normal air conveying, the upper surface of the rotating rejection unit 212 and the top of the conventional air conveying mechanism 22 are both provided with air conveying inclined holes 2123, and the opening direction of the air conveying inclined holes 2123 is the same as the conveying direction of the metal can 6, and is arranged to be inclined upward. After ventilation, the above-mentioned air conveying inclined holes 2123 will push the metal can 6 to move forward and upward. For this reason, a shielding mechanism 3 is set above the air conveying main body 2, and the metal can 6 can pass through between the air conveying main body 2 and the shielding mechanism 3, and the height between the air conveying main body 2 and the shielding mechanism 3 cannot allow the metal can 6 to fall over. Since it cannot fall over, the above-mentioned metal can 6 can jump forward and move under the action of the air blowing from the air conveying inclined holes 2123, and ensure the normal connection between the front conveying mechanism 1 and the rear conveying mechanism 5.

[0032] like Figure 3-6As shown, the specific structure of the above-mentioned rotating rejection unit 212 is that the rotating rejection unit 212 includes a rotating seat 2121 detachably connected to the mounting frame 211. The reason for adopting this method is that after a single rotating rejection unit 212 has a problem, it can be replaced separately, and the replacement will not affect normal use. It is only necessary to disassemble and assemble the rotating seat 2121 through the bolt structure. Afterwards, the end of the rotating seat 2121 is rotatably connected with an air delivery support bar 2122. Under normal conditions, the air delivery support bar 2122 can be in a horizontal state for supporting the metal can 6, and the rotation plane of the air delivery support bar 2122 is set parallel to the conveying direction of the metal can 6, that is, it can only be rotated vertically, and in order to avoid affecting the movement of other metal cans 6, the above-mentioned air delivery support bar 2122 can only be rotated downward. Correspondingly, in order to ensure that the metal can 6 passing above it can be normally conveyed, the air delivery support bar 2122 is provided with an air delivery inclined hole 2123 above it. Then, the specific structure of the above-mentioned rejection action controller 213 is that the rejection action controller 213 includes an air supply pipe 2132 connected to the air supply support bar 2122, the air supply pipe 2132 is a conventional hard pipe structure, and the air supply support bar 2122 and the air supply pipe 2132 adopt a detachable plug-in structure to ensure that when the air supply support bar 2132 is replaced, the current air supply pipe 2132 can continue to be used, and then one end of the air supply pipe 2132 is connected to the air supply inclined hole 2123, and the other end is provided with an air supply port 2133 and connected to the air supply inclined hole 2123. The external air source structure is connected. After the external air source is turned on, air can be blown from the air supply inclined hole 2132. The external air source can be one, and then it is connected to the air supply port 2133 by setting multiple branch pipes through a main pipe. In order to facilitate separate control, each branch pipe can be provided with an independent solenoid valve. In order to drive the above-mentioned air supply support bar 2122 to rotate, the end of the air supply pipe 2132 away from the air supply support bar 2122 is also connected to the end of the telescopic unit 2131, and is driven to move by the telescopic unit 2131.

[0033] It should be noted that the above-mentioned air delivery support bar 2122 needs to be horizontal under normal conditions, and for this purpose it needs to be able to automatically reset. The way to achieve the rotation switching state of the air delivery support bar 2122 is that a torsion spring is arranged between the air delivery support bar 2122 and the rotating seat 2121, and the end of the air delivery support bar 2122 away from the rotating seat 2121 is an inclined surface and conflicts with the conventional air delivery mechanism 22. The air delivery support bar 2122 can conflict with the conventional air delivery mechanism 22 under the action of the torsion spring, and then reach a horizontal state. When the state is changed, the air supply pipe 2132 can be driven by the telescopic unit 2131 and then pulled to rotate by the air supply pipe 2132. After the metal can 6 is rotated and dropped, the output end of the telescopic unit 2131 can be extended. Then, under the action of the torsion spring, the above-mentioned air delivery support bar 2122 can be reset normally and reach a horizontal state.

[0034] In the above structure, in order to prevent the metal can 6 from being stagnant on the packaging line, in the same time period, the same metal can 6 is blown and moved by at least two adjacent air delivery inclined holes 2123 in the conveying direction of the metal can 6. In other words, the metal can 6 can be normally transferred between the air delivery inclined holes 2123.

[0035] The above structure can realize that, on the basis of the original air conveying mechanism, the rejecting mechanism 21 is added, and the metal can 6 can be rejected from the packaging line by the operation of the rejecting mechanism 21 without stopping the machine, and the rejecting process will not affect other normal metal cans 6. And the rejecting mechanism 21 can be reset normally after rejecting the corresponding metal can 6, thereby preventing the subsequent metal cans 6 from being affected.

[0036] As a preferred embodiment, in order to avoid affecting other metal cans 6 when rejecting deformed metal cans 6, within the same time period, the same metal can 6 is supported by at least four adjacent air delivery support bars 2122, and the same metal can 6 cannot cross six adjacent air delivery support bars 2122. When two adjacent metal cans 6 pass closely through the rejection mechanism 21, even if one of them needs to be rejected, it can be ensured that during the rejection process, the other normal metal can 6 has a sufficient number of air delivery support bars 2122 to support it, and thus will not tilt or fall. And in the above structure, the length of the air delivery support bar 2122 is less than 3 / 2 of the length of the diameter of the metal can 6. In other words, the above air delivery support bar 2122 cannot accommodate two metal cans 6, which can ensure that during the rejection process, the metal can 6 rejected in the front or back will affect the normal air delivery process of the adjacent metal cans 6 in front and behind.

[0037] For this reason, in the above structure, in order to ensure that the deformed metal can 6 can be normally removed, after the four adjacent air delivery support bars 2122 are simultaneously rotated downward to the extreme position, the gaps generated can be vertically passed through by the metal can 6.

[0038] The gap between adjacent closely arranged air delivery support bars 2122 is small, so it is easy to fail to accurately determine the edge line of each air delivery support bar 2122. Therefore, in order to facilitate identification of the number of air delivery support bars 2122 that the metal can 6 crosses, a reflective coating is provided on the upper surface of the air delivery support bar 2122, and the reflective coatings of adjacent air delivery support bars 2122 are of different colors. In this way, the boundary of each air delivery support bar 2122 can be seen at an angle, so it is easy to determine each air delivery support bar 2122 that specifically supports the metal can 6.

[0039] The screening process by conventional manpower is relatively complicated and slow to operate. Metal cans that move faster cannot complete the operation. Therefore, in order to replace manpower to complete the rejection operation, the present invention also discloses an automatic rejection method for a metal can air conveying device with a rejection function. Therefore, a main control terminal is also required to be set, the output end of the main control terminal is connected to each telescopic unit 2131, and the input end is connected to a visual recognition camera. The visual recognition camera is set above the rejection mechanism 21, and the shielding mechanism 3 is set between the rejection mechanism 21 and the visual camera. Figure 7 The transparent shielding plate 32 shown is used to avoid affecting the image acquisition of the visual camera;

[0040] When in use, the specific steps are as follows: the main control terminal obtains the current image through the visual recognition camera; then the image is cropped so that the image range is limited to the position of the rejection mechanism 21; when the deformed metal can 6 is detected, the current image is gray-scaled. Under normal circumstances, there are two gray-scale images of the air delivery support bar 2122 with intervals and different gray-scales. When it is blocked by the metal can, a third type will be generated. For this reason, after the above image is binarized according to the preset gray-scale value, it is possible to accurately obtain which specific air delivery support bars 2122 are blocked by the metal can; accordingly, the main control terminal can drive the corresponding telescopic unit 2131 to drive the air delivery support bar 2122 to rotate downward, so that the metal can 6 falls.

Claims

1. A metal can air conveying device with a rejection function, arranged between a front conveying mechanism (1) and a rear conveying mechanism (5), It is characterized in that It comprises an air conveying body (2) which is on the same horizontal plane as the front conveying mechanism (1) and the rear conveying mechanism (5); The air conveying body (2) comprises a rejection mechanism (21) and a conventional air conveying mechanism (22) arranged along the conveying direction of the metal can (6); the rejection mechanism (21) comprises a mounting frame (211) fixed to the front conveying mechanism (1); the mounting frame (211) is provided with a plurality of rotating rejection units (212) arranged in a direction perpendicular to the conveying direction of the metal can (6); the rotating rejection units (212) are respectively connected to a rejection action controller (213); the rejection action controller (213) is capable of driving the rotating rejection units (212) to rotate downward from a horizontal state; and the upper surface of the rotating rejection unit (212) and the upper part of the conventional air conveying mechanism (22) are both provided with air conveying inclined holes (2123); the opening direction of the air conveying inclined holes (2123) is the same as the conveying direction of the metal can (6) and is arranged to be inclined upward; A shielding mechanism (3) is arranged above the air delivery body (2), and the metal can (6) can pass between the air delivery body (2) and the shielding mechanism (3), and the height between the air delivery body (2) and the shielding mechanism (3) is such that the metal can (6) cannot fall over.

2. A metal can air conveying device with a rejection function according to claim 1, It is characterized in that The rotating rejection unit (212) comprises a rotating seat (2121) detachably connected to the mounting frame (211); an end of the rotating seat (2121) is rotatably connected to an air delivery support bar (2122); a rotating plane of the air delivery support bar (2122) is arranged parallel to a conveying direction of the metal can (6); and air delivery inclined holes (2123) are arranged above the air delivery support bar (2122).

3. A metal can air conveying device with a rejection function according to claim 2, It is characterized in that In the same time period, a single metal can (6) passing through the rejection mechanism (21) is supported by at least four adjacent air delivery support bars (2122).

4. A metal can air conveying device with a rejection function according to claim 2, It is characterized in that The rejection action controller (213) comprises an air supply pipe (2132) connected to the air supply support bar (2122); one end of the air supply pipe (2132) is connected to the air supply inclined hole (2123); the other end is provided with an air supply port (2133) and is connected to an external air source structure; the end of the air supply pipe (2132) away from the air supply support bar (2122) is also connected to the end of the telescopic unit (2131) and is driven to move by the telescopic unit (2131).

5. A metal can air conveying device with a rejection function according to claim 4, It is characterized in that A torsion spring is arranged between the air delivery support strip (2122) and the rotating seat (2121), and the end of the air delivery support strip (2122) away from the rotating seat (2121) is an inclined surface and contacts with the conventional air delivery mechanism (22); the air delivery support strip (2122) can contact with the conventional air delivery mechanism (22) under the action of the torsion spring, and can be driven by the telescopic unit (2131) and then pulled by the air delivery pipe (2132) to rotate.

6. A metal can air conveying device with a rejection function according to claim 2, It is characterized in that The length of the air delivery support bar (2122) is less than 3 / 2 of the diameter length of the metal can (6).

7. A metal can air conveying device with a rejection function according to claim 6, It is characterized in that When the four adjacent air delivery support bars (2122) are simultaneously rotated downward to the extreme position, the resulting gap can be vertically passed through by the metal can (6).

8. The metal can air conveying device with a rejection function according to claim 2, It is characterized in that In the same time period, a single metal can (6) passing through the rejection mechanism (21) is blown and moved by at least two adjacent air delivery inclined holes (2123) in the conveying direction of the metal can (6).

9. A metal can air conveying device with a rejection function according to any one of claims 2 to 8, It is characterized in that A reflective coating is provided on the upper surface of the air delivery support bar (2122), and the reflective coatings of adjacent air delivery support bars (2122) are of different colors.

10. The automatic rejection method of the metal can air conveying device with rejection function according to claim 9, It is characterized in that A main control terminal is also provided, wherein the output end of the main control terminal is connected to each telescopic unit (2131), and the input end is connected to a visual recognition camera, the visual recognition camera is arranged above the rejection mechanism (21), and the shielding mechanism (3) is provided with a transparent shielding plate (32) between the rejection mechanism (21) and the visual camera. After the visual recognition camera detects the deformed metal can (6), the main control terminal can drive the corresponding telescopic unit (2131) to drive the air delivery support bar (2122) to rotate downward.

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