Variable-distance clamp for cigarette cartons

Abstract

The utility model relates to the technical field of cigarette clamps, in particular to a cigarette variable-distance clamp. The utility model provides a variable-pitch clamp for cigarette cartons. The variable-pitch clamp comprises a mounting frame, a vacuum generator, a variable-pitch mechanism, a driving device and a plurality of vacuum chuck mechanisms, the mounting frame comprises two side plates arranged in the first direction, the pitch changing mechanism is mounted between the two side plates, and the multiple vacuum suction cup mechanisms are mounted on the pitch changing mechanism in the first direction. The driving device is installed on the installation frame and used for driving the distance changing mechanism to adjust the distance between the two adjacent vacuum suction cup mechanisms. According to the cigarette variable-distance clamp, the distance between the vacuum suction cup mechanisms can be flexibly adjusted according to the cigarette width size of a to-be-grabbed cigarette, so that the grabbing range of the vacuum suction cup assemblies is flexibly adjusted, and the grabbing efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cigarette rod clamps, in particular to a cigarette rod clamp with a variable distance. Background Art

[0002] Currently in the field of cigarette production, the main way to grab cigarette strips from the assembly line is to use a robot to control the suction cups to grab, and the suction cups can grab multiple cigarette strips (usually four) at the same time and bring them to the packaging station for stacking and packaging; however, the current suction cup assembly has a major disadvantage. Since the relative positions between the suction cups are fixed, the general suction cup assembly can only grab four cigarette strips with a width of 80-105mm at the same time. When the width of the cigarette strip is greater than 105mm, the outermost suction cup can only hold the edge of the cigarette strip during grabbing, and the outermost cigarette strip is easy to fall off during transfer; in this way, the suction cup assembly with a larger suction cup spacing can be replaced, which increases the investment cost of the equipment, is inflexible to use, troublesome to replace, and reduces efficiency. Utility Model Content

[0003] (1) The problem to be solved by the present invention is: how to flexibly adjust the distance between the suction cups in the suction cup assembly to adapt to cigarette strips of different widths.

[0004] (2) Technical solution

[0005] A variable-distance clamp for cigarette strips, comprising a mounting frame, a vacuum generator, a variable-distance mechanism, a driving device, and a plurality of vacuum suction cup mechanisms; the mounting frame comprises two side plates arranged along a first direction, the variable-distance mechanism is mounted between the two side plates, and the plurality of vacuum suction cup mechanisms are mounted on the variable-distance mechanism in an arranged manner along the first direction; the driving device is mounted on the mounting frame and is used to drive the variable-distance mechanism to adjust the distance between two adjacent vacuum suction cup mechanisms;

[0006] The vacuum generator is connected to the vacuum suction cup mechanism through a pipeline mechanism to adjust the negative pressure in the vacuum suction cup mechanism.

[0007] According to one embodiment of the present utility model, the pitch-changing mechanism includes a scissor fork mechanism, a slide rod, a first moving block, at least one second moving block and a third moving block, the slide rod is fixed between the two side plates, the first moving block, the second moving block and the third moving block are arranged along the first direction and are respectively slidably connected to the slide rod;

[0008] The third moving block is fixed to the side plate, and the first moving block, the second moving block and the third moving block are hinged to the scissor fork mechanism respectively;

[0009] A vacuum suction cup mechanism is installed on the lower surfaces of the first moving block, the second moving block and the third moving block.

[0010] According to one embodiment of the present utility model, the driving device includes a screw and a servo motor, the screw is rotatably installed between the two side plates, the first moving block is threadedly connected to the screw, the second moving block and the third moving block are respectively slidably connected to the screw, the servo motor is installed on the side plate, and its output end is connected to the screw.

[0011] According to an embodiment of the present invention, the driving device includes an electric push rod, the rod end of which is connected to the first moving block and is used to push the first moving block to move along the axial direction of the sliding rod.

[0012] According to an embodiment of the present invention, a plurality of second moving blocks are provided.

[0013] According to one embodiment of the present invention, a camera for identifying cigarette information is further included, wherein the camera is vertically mounted on the mounting bracket with the camera lens facing downward.

[0014] According to one embodiment of the present invention, a connecting piece is installed on the top of the mounting frame, and the connecting piece includes a bottom flange, a column and a top flange connected in sequence. The bottom flange is fixedly connected to the mounting frame, and the top flange is used to connect to the robotic arm.

[0015] According to one embodiment of the present invention, the vacuum suction cup mechanism includes at least one vacuum suction cup.

[0016] According to an embodiment of the present invention, the vacuum suction cup mechanism includes a plurality of vacuum suction cups, and the plurality of vacuum suction cups are arranged along a second direction, and the second direction is perpendicular to the first direction.

[0017] According to one embodiment of the present invention, the pipeline mechanism includes a plurality of hoses corresponding one-to-one to the vacuum suction cups, one end of the hose is connected to the corresponding vacuum suction cup, and the other end is connected to the vacuum generator.

[0018] Beneficial effects of the utility model:

[0019] The utility model provides a variable-distance clamp for cigarette strips, comprising a mounting frame, a vacuum generator, a variable-distance mechanism, a driving device and a plurality of vacuum suction cup mechanisms; the mounting frame comprises two side plates arranged along a first direction, the variable-distance mechanism is installed between the two side plates, and the plurality of vacuum suction cup mechanisms are arranged along the first direction and installed on the variable-distance mechanism; the driving device is installed on the mounting frame, and is used to drive the variable-distance mechanism to adjust the distance between two adjacent vacuum suction cup mechanisms; the vacuum generator is connected to the vacuum suction cup mechanism through a pipeline mechanism to adjust the negative pressure in the vacuum suction cup mechanism.

[0020] The distance-adjustable clamp can adjust the distance between the adjacent vacuum suction disc mechanisms, thereby increasing the grabbing range of the suction disc assembly, and further making the grabbing of the outermost cigarettes more stable and flexible, and without the need of replacing the suction disc assembly with a larger distance between the suction disc mechanisms, thereby saving the replacement time, improving the grabbing efficiency, and being more convenient and flexible to use. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings described below are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0022] Figure 1 The structural schematic diagram provided for the embodiments of the present application;

[0023] Figure 2 The structural diagram provided for the embodiments of the present application after removing the camera, the connecting piece and the vacuum generator;

[0024] Figure 3 The structural diagram of the distance-adjustable mechanism and the vacuum suction disc provided for the embodiments of the present application;

[0025] Figure 4 The connecting schematic diagram of the first moving block and the vacuum suction disc provided for the embodiments of the present application.

[0026] Figure legend: 1, mounting frame; 101, top plate; 102, side plate; 2, connecting piece; 3, vacuum generator; 4, camera; 5, connecting plate; 6, servo motor; 7, screw rod; 8, scissor fork mechanism; 9, first moving block; 901, threaded sleeve; 902, sleeve; 903, weight-reducing hole; 10, second moving block; 11, third moving block; 12, vacuum suction disc; 13, sliding rod; 14, fixed block; 141, mounting hole; 15, pin shaft. DETAILED DESCRIPTION

[0027] The technical solutions of the present application will be described below in conjunction with the embodiments, and obviously, the described embodiments are some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0028] As Figures 1-4 As shown in the utility model, one embodiment of the utility model provides a cigarette variable-distance clamp, including mounting frame 1, vacuum generator 3, variable-distance mechanism, drive device and a plurality of vacuum chuck mechanisms, mounting frame 1 includes two side plates 102 arranged along the first direction, variable-distance mechanism is installed between two side plates 102, and a plurality of vacuum chuck mechanisms are installed on variable-distance mechanism along the first direction, drive device is installed on mounting frame 1, is used to drive variable-distance mechanism to adjust the distance between adjacent two vacuum chuck mechanisms, and vacuum generator 3 is connected with vacuum chuck mechanism through pipeline mechanism to adjust the negative pressure size in vacuum chuck mechanism.

[0029] In the embodiment, since the variable-distance mechanism can adjust the distance between adjacent two vacuum chuck mechanisms, the grabbing range of the chuck assembly is increased, then the outermost cigarette is grabbed more stably, and the use is more flexible, and simultaneously, it is not necessary to replace the chuck assembly with larger distance between chucks, replacement time is saved, grabbing efficiency is improved, and the use is more convenient and flexible.

[0030] That is, the cigarette variable-distance clamp can flexibly adjust the distance between vacuum chuck mechanisms according to the cigarette width size of the cigarette to be grabbed, flexibly adjust the grabbing range of the vacuum chuck assembly, so as to improve the grabbing efficiency and use more conveniently.

[0031] In the embodiment, the first direction is the left-right direction in Figure 1 .

[0032] As a preferred embodiment, as shown in Figure 1 , mounting frame 1 includes top plate 101 and two side plates 102, two side plates 102 are arranged on the lower surface of top plate 101, and are perpendicular to top plate 101, and side plate 102 is integrally formed with top plate 101. The top of mounting frame 1 is provided with connecting piece 2 for being connected with a mechanical arm, and connecting piece 2 includes bottom flange, column body and top flange connected in sequence, wherein, bottom flange is fixedly connected with mounting frame 1, and top flange is used for being connected with the end of the mechanical arm.

[0033] As a preferred embodiment, as shown in Figure 1 and Figure 2 , variable-distance mechanism includes scissor fork mechanism 8, slide rod 13, first moving block 9, at least one second moving block 10 and third moving block 11. Wherein, slide rod 13 is fixed between two side plates 102, first moving block 9, second moving block 10 and third moving block 11 are arranged along the length direction of slide rod 13, and are respectively connected with slide rod 13 in sliding mode. Specifically, from Figure 1From left to right, the first moving block 9, second moving block 10, and third moving block 11 are arranged in sequence. Furthermore, the third moving block 11 is fixed to the side panel 102 on the right side of the mounting frame 1. The first moving block 9, second moving block 10, and third moving block 11 are each hingedly connected to the scissor fork mechanism 8. A vacuum suction cup mechanism is mounted on the lower surface of each of the first moving block 9, second moving block 10, and third moving block 11.

[0034] In this embodiment, preferably, the driving device includes a screw 7 and a servo motor 6, wherein the screw 7 is rotatably installed between the two side plates 102, and the slide rod 13 and the screw 7 are arranged in the front-to-back direction, that is, the screw 7 is located in front of the slide rod 13, and the axes of the screw 7 and the slide rod 13 are located in the same horizontal plane.

[0035] Furthermore, the first moving block 9 is screwed to the screw 7 , the second moving block 10 and the third moving block 11 are slidingly connected to the screw 7 respectively, and the servo motor 6 is installed on the side plate 102 on the left side of the mounting frame 1 , and its output end is connected to the screw 7 .

[0036] In this way, when the spacing between the vacuum suction cup mechanisms needs to be adjusted, the servo motor 6 drives the screw 7 to rotate, causing the first moving block 9 to move to the left. Driven by the scissor fork mechanism 8, multiple second moving blocks 10 move successively, thereby increasing the spacing between the vacuum suction cup assemblies, increasing the suction cup grabbing range, and making it more flexible to use.

[0037] It should be noted that the first moving block 9, the second moving block 10, and the third moving block 11 are respectively hinged to the scissor fork mechanism 8 via a pin 15. The scissor fork mechanism 8 is prior art, and its specific structure and working principle are not described in detail.

[0038] like Figure 3 As shown, the second ends of the first moving block 9, the second moving block 10 and the third moving block 11 are each provided with a first circular hole, in which a sleeve 902 for the slide rod 13 to pass is fixed. The first ends of the first moving block 9, the second moving block 10 and the third moving block 11 are each provided with a second circular hole, wherein, as shown Figure 4 A threaded sleeve 901 adapted to the screw rod 7 is fixed in the second circular hole of the first moving block 9, and a sleeve 902 for the screw rod 7 to pass through is fixed in the second circular holes at the first ends of the second moving block 10 and the third moving block 11.

[0039] In addition, if Figure 2 and Figure 3As shown, a fixing block 14 is fixedly mounted on the top of the third movable block 11 via bolts. A rectangular groove is formed on the lower surface of the fixing block 14 for the scissor fork mechanism 8 to extend into. A mounting hole 141 is formed on the side of the fixing block 14. A hole is formed on the side plate 102 on the right side of the mounting frame 1 to cooperate with the mounting hole 141. When fixing the third movable block 11, the fixing block 14 is first installed on the third movable block 11 using bolts, and then the fixing block 14 is fixed to the side plate 102 on the right side of the mounting frame 1 using bolts and nuts.

[0040] As an alternative embodiment, unlike the above-mentioned method using the screw rod 7 and the servo motor 6, in this embodiment, the driving device includes an electric push rod, which is fixedly mounted on the side plate 102 on the left side of the mounting frame 1 and is perpendicular to the side plate 102. The rod end of the electric push rod is fixedly connected to the first movable block 9. In this way, when the spacing between the vacuum suction cup mechanisms needs to be adjusted, the electric push rod is shortened to pull the first movable block 9 toward the left. Driven by the scissor fork mechanism 8, the multiple second movable blocks 10 move successively, thereby increasing the spacing between the vacuum suction cup assemblies and expanding the suction cup gripping range. In addition, in this embodiment, the first moving block 9, the second moving block 10 and the third moving block 11 are all provided with round holes for the sliding rod 13 to pass through. The round hole on the first moving block 9 is located in the middle position of the first moving block 9, the round hole on the second moving block 10 is located in the middle position of the second moving block 10, and the round hole on the third moving block 11 is located in the middle position of the third moving block 11. A sleeve 902 for the sliding rod 13 to pass through is sleeved in the round holes of the first moving block 9, the second moving block 10 and the third moving block 11.

[0041] As a preferred embodiment, Figure 1 As shown, a camera 4 is installed on the side of the mounting frame 1. The camera 4 is used to identify cigarette information. The camera 4 is vertically installed on the mounting frame 1, and the lens of the camera 4 faces downward.

[0042] Exemplarily, a connecting plate 5 is installed on the left end face of the mounting frame 1 by bolts. The cross section of the connecting plate 5 is L-shaped. The camera 4 is fixedly mounted on the connecting plate 5, and the lens of the camera 4 is lower than the connecting plate 5.

[0043] It should be noted that the camera 4 is used to identify the cigarette carton information and its location information. The camera 4 provides the cigarette carton location information to the controller so that the controller can control the robotic arm to accurately grab the cigarette carton.

[0044] For example, when the camera 4 obtains that the width of the current cigarette to be grasped is greater than 105mm, the controller controls the servo motor 6 to drive the screw 7 to rotate, so that the first moving block 9 moves to the left. Driven by the scissor fork mechanism 8, multiple second moving blocks 10 move successively, and the distance between two adjacent vacuum suction cup mechanisms gradually increases until the distance between two adjacent vacuum suction cup mechanisms reaches the set value. At this time, when grasping, the vacuum suction cup assembly is just aligned with multiple cigarettes with a width greater than 105mm, and the outermost suction cup can only suck the edge of the cigarette, causing the outermost cigarette to fall during the transfer.

[0045] When the camera 4 captures the next batch of cigarettes with a width of 80mm-105mm to be grabbed, the controller controls the servo motor 6 to drive the screw 7 to rotate, so that the first moving block 9 moves toward the right. Driven by the scissor fork mechanism 8, multiple second moving blocks 10 successively move toward the right, and the distance between two adjacent vacuum suction cup mechanisms gradually decreases until the distance between the two adjacent vacuum suction cup mechanisms is reduced to the set value. At this time, when grabbing, the multiple vacuum suction cup mechanisms in the vacuum suction cup assembly are just aligned with the multiple cigarettes with a width of 80mm-105mm.

[0046] It can be seen that this variable-distance cigarette clamp can flexibly adjust the distance between the vacuum suction cup mechanisms according to the width of the cigarette to be grasped, so as to flexibly adjust the grasping range of the vacuum suction cup assembly, thereby improving the grasping efficiency and making it more convenient to use.

[0047] For example, Figure 3 As shown, the vacuum suction cup mechanism includes a vacuum suction cup 12 , that is, a vacuum suction cup 12 is installed on the lower surface of the first moving block 9 , the second moving block 10 and the third moving block 11 .

[0048] In addition, in order to improve the stability of the adsorption of cigarettes, the vacuum suction cup mechanism includes two vacuum suction cups 12, that is, two vacuum suction cups 12 are installed on the lower surface of the first moving block 9, the second moving block 10 and the third moving block 11, and the two vacuum suction cups 12 are arranged along the second direction, which is perpendicular to the first direction. Figure 1 The front-to-back direction.

[0049] Exemplarily, a plurality of weight-reducing holes 903 are provided on the first moving block 9 , the second moving block 10 and the third moving block 11 to reduce the weight of the entire pitch-changing mechanism and save costs.

[0050] In this embodiment, the vacuum generator 3 is fixedly mounted on the upper surface of the top plate 101, and each vacuum suction cup 12 is connected to the vacuum generator 3 via a hose. The vacuum generator 3 generates a negative pressure (lower than atmospheric pressure) inside the closed container of the vacuum suction cup 12, so that the density of gas molecules in the container of the vacuum suction cup 12 is reduced. During negative pressure adsorption of cigarettes, due to the negative pressure inside the vacuum suction cup 12, the pressure difference between the vacuum suction cup 12 and the cigarette to be adsorbed causes gas molecules to flow from the outside to the inside of the vacuum suction cup 12, and the gas molecules are adsorbed on the surface inside the vacuum suction cup 12 to form vacuum adsorption. Once negative pressure is generated, the vacuum suction cup 12 can be maintained for a long time to ensure that the cigarette is firmly connected to the suction cup. When adsorption is not required, the vacuum generator 3 can disconnect the adsorption by releasing the negative pressure inside the vacuum suction cup 12, so that the suction cup is separated from the cigarette. Compared with using an air pump, the use of an electric vacuum generator 3 produces less noise during operation.

[0051] In the description of this utility model, it should be noted that the terms "upper" and "lower" and other terms indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0052] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or a connection between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A cigarette rod variable distance clamp, characterized in that: The invention comprises a mounting frame (1), a vacuum generator (3), a pitch-changing mechanism, a driving device, and a plurality of vacuum suction cup mechanisms; the mounting frame (1) comprises two side plates (102) arranged along a first direction, the pitch-changing mechanism is installed between the two side plates (102), and the plurality of vacuum suction cup mechanisms are arranged along the first direction and installed on the pitch-changing mechanism; the driving device is installed on the mounting frame (1) and is used to drive the pitch-changing mechanism to adjust the distance between two adjacent vacuum suction cup mechanisms; The vacuum generator (3) is connected to the vacuum suction cup mechanism via a pipeline mechanism to adjust the negative pressure in the vacuum suction cup mechanism.

2. The variable-length cigarette holder according to claim 1, characterized in that: The pitch-changing mechanism comprises a scissor fork mechanism (8), a slide bar (13), a first moving block (9), at least one second moving block (10) and a third moving block (11); the slide bar (13) is fixed between the two side plates (102); the first moving block (9), the second moving block (10) and the third moving block (11) are arranged in a first direction and are respectively slidably connected to the slide bar (13); The third moving block (11) is fixed on the side plate (102), and the first moving block (9), the second moving block (10) and the third moving block (11) are respectively hinged to the scissor fork mechanism (8); Vacuum suction cup mechanisms are installed on the lower surfaces of the first moving block (9), the second moving block (10) and the third moving block (11).

3. The variable-length cigarette holder according to claim 2, characterized in that: The driving device comprises a screw (7) and a servo motor (6); the screw (7) is rotatably mounted between the two side plates (102); the first moving block (9) is screwed to the screw (7); the second moving block (10) and the third moving block (11) are respectively slidably connected to the screw (7); the servo motor (6) is mounted on the side plate (102), and its output end is connected to the screw (7).

4. The variable-length cigarette holder according to claim 2, characterized in that: The driving device comprises an electric push rod, the rod end of which is connected to the first moving block (9) and is used to push the first moving block (9) to move along the axial direction of the sliding rod (13).

5. The variable-length cigarette holder according to claim 2, characterized in that: A plurality of the second moving blocks (10) are provided.

6. The variable-length cigarette holder according to claim 1, characterized in that: It also includes a camera (4) for identifying cigarette information, wherein the camera (4) is vertically mounted on the mounting frame (1), with the lens of the camera (4) facing downward.

7. The variable-length cigarette holder according to claim 1, characterized in that: A connecting piece (2) is installed on the top of the mounting frame (1), and the connecting piece (2) includes a bottom flange, a column, and a top flange connected in sequence. The bottom flange is fixedly connected to the mounting frame (1), and the top flange is used to be connected to the robotic arm.

8. The variable-length cigarette holder according to claim 2, characterized in that: The vacuum suction cup mechanism comprises at least one vacuum suction cup (12).

9. The variable-length cigarette holder according to claim 8, characterized in that: The vacuum suction cup mechanism comprises a plurality of vacuum suction cups (12), wherein the plurality of vacuum suction cups (12) are arranged along a second direction, and the second direction is perpendicular to the first direction.

10. The variable-length cigarette holder according to claim 9, characterized in that: The pipeline mechanism includes a plurality of hoses corresponding one to one with the vacuum suction cups (12), one end of the hose is connected to the corresponding vacuum suction cup (12), and the other end is connected to the vacuum generator (3).

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