Holding, clamping and centering device for reel materials

Abstract

The invention provides an embracing and centering device for reel materials. The embracing and centering device is used for solving the problems that an existing positioning technology for visually detecting the center of the reel materials is high in cost and difficult to maintain, and a mechanical embracing and clamping type positioning mode is poor in size universality. The device comprises a bottom plate, a material bearing tray and a clamping mechanism. The bottom plate is arranged at the bottom; the material bearing tray is fixedly connected to the bottom plate and used for bearing reel materials. The holding and clamping mechanism is installed on the bottom plate and comprises at least three sets of holding and clamping sleeves higher than the material bearing tray, each set of holding and clamping sleeve comprises at least one sleeve coaxially arranged in the vertical direction, and the holding and clamping mechanism is configured in the mode that the at least three sets of holding and clamping sleeves are synchronously close to the center of the material bearing tray; and the clamping sleeve is used for clamping and centering the reel material placed on the material bearing tray. The device is simple in structure and low in production cost, and can be used for clamping and centering the uppermost layer of reel materials with different stacking heights.

Description

Technical Field

[0001] The present invention relates to the technical field of packaging, in particular to a clamping and centering device for reel materials. Background Art

[0002] During the packaging production process, a variety of packaging materials are used to package products. The most common packaging material is strip material wound into a reel, commonly known as a reel. These reels are typically stacked horizontally for storage and transportation. When using reels, the top layer of the reel must be precisely positioned before it can be used in subsequent processes.

[0003] In the existing technology, the following methods are usually used to accurately position the top layer of reel material in the reel material stack: 1) The center coordinates of the reel material are located through visual inspection and other technologies, and then the reel material is positioned, grasped and used according to the detected center coordinates by a multi-degree-of-freedom robot. This method requires the compilation of a visual inspection program that can accurately identify the center coordinates of the reel material, and requires the use of a high-value multi-degree-of-freedom robot. The production cost is high, the equipment maintenance and repair are difficult, and the overall operating cost of the production enterprise is high; 2) A mechanical clamping method is used to clamp and position the top layer of reel material in the reel material stack, and then a simple disassembly and stacking robot is used to grab and use it at a fixed point. In this way, when there is no auxiliary mechanism such as lifting to assist, it can only clamp and center the reel material at a fixed height position. If auxiliary mechanisms such as lifting are added, the complexity of the equipment mechanism will inevitably increase.

[0004] Therefore, it is necessary to improve the existing technology. Summary of the Invention

[0005] In view of this, an embodiment of the present invention provides a clamping and centering device for reel materials, which is used to solve the problems of high cost and difficult maintenance of the existing visual detection positioning technology for the center of reel materials and the mechanical clamping positioning method that can only clamp and center reel materials at a fixed height position.

[0006] The embodiment of the present disclosure provides a clamping and centering device for a reel material, comprising: a base plate, a material carrying tray, and a clamping mechanism; The base plate is arranged at the bottom; The material carrying tray is fixedly connected to the bottom plate and is used to carry the reel material; The clamping mechanism is mounted on the base plate, and includes a main body and at least three groups of clamping sleeves, each group of clamping sleeves including at least one sleeve coaxially arranged in a vertical direction. The main body of the clamping mechanism is disposed between the base plate and the material carrying tray, and the clamping sleeves are disposed outside the main body and higher than the material carrying tray. The clamping mechanism is configured to: synchronously move the at least three groups of clamping sleeves toward / away from the center of the material carrying tray, so that when approaching the center of the material carrying tray, the reel material placed on the material carrying tray is clamped and centered by the clamping sleeves.

[0007] In some embodiments, when each group of clamping sleeves includes N sleeves arranged coaxially, the diameters of the rotating surfaces of the N sleeves increase sequentially from bottom to top; wherein N is a positive integer greater than or equal to 2.

[0008] In some embodiments, each set of clamping sleeves includes a first sleeve located on the lower side and a second sleeve located on the upper side.

[0009] In some embodiments, the clamping mechanism further comprises: a connecting rod mechanism, at least two sliders, at least two guide rails and a power mechanism; The linkage mechanism includes at least two first linkages and at least two second linkages; one end of each first linkage is rotatably connected to the base plate, and the rotation connection point coincides with the center of the material carrying tray in the vertical direction; the other end of each first linkage is hinged to one end of a second linkage, and the other end of the second linkage is rotatably connected to one of the sliders; the at least two first linkages and the at least two second linkages are symmetrically or evenly distributed relative to the center of the material carrying tray. Each slider is slidably connected to a guide rail, the guide rail is provided on the base plate, and each slider is provided with at least one set of the clamping sleeves; the at least two sliders and the at least two guide rails are symmetrically or evenly distributed relative to the center of the material carrying tray; The power mechanism is disposed on the bottom plate and connected to the slider, and is used to drive the slider to approach or move away from the center of the material carrying tray.

[0010] In some embodiments, the clamping and centering device for the reel material includes four groups of clamping sleeves, with two groups of clamping sleeves installed on each slider; the four groups of clamping sleeves are symmetrically arranged left and right / front and back on a circle with the center of the material carrying tray as the center.

[0011] In some embodiments, the clamping and centering device for the reel material includes three groups of clamping sleeves, one group of clamping sleeves is installed on each slider, and the three groups of clamping sleeves are evenly distributed on a circle with the center of the material carrying tray as the center.

[0012] In some embodiments, the power mechanism is a cylinder, the fixed side of the cylinder is fixedly connected to the base plate, and the telescopic side of the cylinder is hinged to one of the sliders.

[0013] The clamping and centering device for reeled materials provided by the present invention comprises a material carrying tray and a clamping mechanism disposed on a base plate. The clamping mechanism includes at least three sets of clamping sleeves that are higher than the material carrying tray. By driving the at least three sets of clamping sleeves synchronously toward the center of the material carrying tray, the reeled material placed on the material carrying tray can be clamped and centered. This allows for the reeled material to be used in subsequent production processes, requiring only a simple robotic arm to perform fixed-point grasping of the reeled material after clamping and centering. The entire process does not require machine vision inspection technology, resulting in a simple structure and low production costs. Furthermore, each set of clamping sleeves includes multiple sleeves, and the diameter of the rotating surface of the sleeves increases from bottom to top. This allows for clamping and centering the top layer of reeled material stacks with varying stacking heights, achieving precise clamping height adaptation. This solves the problems of existing mechanical clamping positioning methods, eliminating the need for repeated adjustment of the clamping height of the clamping mechanism, saving clamping centering time and increasing production speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 A schematic top view of a first embodiment of a clamping and centering device for reeled materials provided by the present invention; Figure 2 for Figure 1 The front view of the clamping and centering device for the reel material; Figure 3 For Figure 1 A schematic diagram of the structure after the reel material 4 and the material carrying tray 2 are hidden on the basis; Figure 4 A schematic top view of a second embodiment of a clamping and centering device for reeled materials provided by the present invention; Figure 5 For Figure 4 Schematic diagram of the structure after the reel material 4 and the material carrying tray 2 are hidden on the basis.

[0016] Reference numerals: 1-base plate; 2-material carrying tray; 3-clamping mechanism; 4-reel material; 31-connecting rod mechanism; 32-slider; 33-clamping sleeve; 34-power mechanism; 35-guide rail; 311-first connecting rod; 312-second connecting rod; 331-first sleeve; 332-second sleeve; A- Center of material carrying tray 2. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0018] Figure 1 This is a schematic top view of a first embodiment of a clamping and centering device for reel materials provided by the present invention. Figure 2 for Figure 1 The main view of the clamping and centering device for the reel material, Figure 3 For Figure 1 The schematic diagram of the structure after the reel material 4 and the material carrying tray 2 are hidden on the basis of FIG. Figures 1 to 3 As shown in FIG, the device includes: a base plate 1, a material carrying tray 2 and a clamping mechanism 3.

[0019] Among them: the base plate 1 is arranged at the bottom, which is the benchmark and foundation for the installation and use of the entire clamping and centering device; the material carrying tray 2 is fixedly connected to the base plate 1, and is used to carry the reel material 4; the clamping mechanism 3 is installed on the base plate 1, and its main body is arranged between the base plate 1 and the material carrying tray 2, and the clamping sleeve 33 arranged in the clamping mechanism 3 is higher than the material carrying tray 2, which is used to realize the clamping and centering of the reel material 4 placed on the material carrying tray 2.

[0020] The clamping mechanism 3 further includes a connecting rod mechanism 31 , a slider 32 , a power mechanism 34 and a guide rail 35 .

[0021] The connecting rod mechanism 31 includes at least two first connecting rods 311 and at least two second connecting rods 312. The first connecting rods 311 are rotatably arranged on the bottom plate 1, and the rotation center coincides with the center A of the material carrying tray 2 in the vertical direction. At the same time, each first connecting rod 311 is symmetrically or evenly distributed relative to the center A of the material carrying tray 2. One end of the two or more second connecting rods 312 is respectively hinged to one of the first connecting rods 311, and the other end is respectively rotatably connected to two or more sliders 32. The two or more second connecting rods 312 are respectively hinged to the material carrying tray 2. The center A of the material carrying tray 2 is symmetrically or evenly distributed; the sliders 32 include at least two, which are slidably connected to the guide rails 35 respectively, and are symmetrically or evenly distributed relative to the center A of the material carrying tray 2; the clamping sleeves 33 include at least three groups, which are respectively arranged on the sliders 32; the power mechanism 34 is arranged on the base plate 1, and can drive one of the sliders 32 to approach / move away from the center A of the material carrying tray 2; the guide rails 35 include at least two, which are fixed on the base plate 1 and are symmetrically or evenly distributed relative to the center A of the material carrying tray 2.

[0022] In the first embodiment of the present invention: there are two first connecting rods 311, and they are symmetrically arranged with respect to the center A of the material carrying tray 2; there are two second connecting rods 312, and they are symmetrically arranged with respect to the center A of the material carrying tray 2; there are two sliders 32, and they are symmetrically arranged with respect to the center A of the material carrying tray 2; there are four groups of clamping sleeves 33, which are respectively arranged at the two ends of the two sliders 32; the power mechanism 34 is a cylinder, and the fixed side is fixedly connected to the base plate 1, and the telescopic side is hinged to one of the sliders 32; there are two guide rails 35, and they are symmetrically arranged with respect to the center A of the material carrying tray 2.

[0023] Figure 4 This is a schematic top view of a second embodiment of a clamping and centering device for reel materials provided by the present invention. Figure 5 For Figure 4 The schematic diagram of the structure after the reel material 4 and the material carrying tray 2 are hidden on the basis of FIG. Figure 4 and Figure 5 As shown in , compared with the first embodiment, in the second embodiment of the present invention: there are three first connecting rods 311, and they are evenly distributed relative to the center A of the material carrying tray 2; there are three second connecting rods 312, and they are evenly distributed relative to the center A of the material carrying tray 2; there are three sliders 32, and they are evenly distributed relative to the center A of the material carrying tray 2; there are three clamping sleeves 33, which are respectively arranged on the three sliders 32; the power mechanism 34 is a cylinder, and the fixed side is fixedly connected to the base plate 1, and the telescopic side is hinged to one of the sliders 32; there are three guide rails 35, and they are evenly distributed relative to the center A of the material carrying tray 2.

[0024] Preferably: Figure 1As shown in FIG, the four sets of clamping sleeves 33 of the clamping and centering device for reeled material provided in the first embodiment of the present invention are symmetrically arranged left-right and front-back about a circle centered at the center A of the material carrier tray 2. The left-right direction is defined as a first direction within a first plane within the material carrier tray 2 and parallel to the guide direction of the guide rail 35, while the front-back direction is defined as a second direction within the first plane and perpendicular to the first direction.

[0025] Preferably: Figure 4 As shown in FIG, the three groups of clamping sleeves 33 of the clamping and centering device for the reel material provided in the second embodiment of the present invention are evenly distributed on the circumference of a circle with the center A of the material carrying tray 2 as the center.

[0026] When the telescopic side of the power mechanism 34 retracts / extends, it will drive the slider 32 hinged to it to approach / move away from the center A of the material carrying tray 2, and further drive the connecting rod mechanism 31 to fold / expand, while driving the slider 32 and the clamping sleeve 33 set on the slider 32 to approach / move away from the center A of the material carrying tray 2.

[0027] When the telescopic side of the power mechanism 34 retracts, the clamping sleeve 33 is driven through the above process to clamp and center the reel 4 placed on the material tray 2. After the clamping and centering, the center of the reel 4 vertically overlaps with the centerline A of the material tray 2. In subsequent production processes, when the reel 4 is needed, a simple robot arm only needs to grasp the reel 4 at a fixed point after the clamping and centering, which reduces investment costs.

[0028] In the first embodiment of the present invention, each set of clamping sleeves 33 includes at least a first sleeve 331. The clamping and centering principle of the first sleeves 331 is as follows: because the axis of each first sleeve 331 is equidistant from the center A of the material carrying tray 2, and the first sleeves 331 are symmetrical relative to the center A of the material carrying tray 2 in the guide direction of the guide rail 35, when the power mechanism 34 drives the left and right sliders 32 to move synchronously toward the center A of the material carrying tray 2, the two first sleeves 331 on the left and the two first sleeves 331 on the right will move synchronously relative to each other until the rotating surfaces of the first sleeves 331 contact the outer wall of the reel material 4 carried on the material carrying tray 2, at which point the four first sleeves 331 clamp the reel material 4.

[0029] In the second embodiment of the present invention, each set of clamping sleeves 33 includes at least a first sleeve 331. The clamping and centering principle of the first sleeves 331 is as follows: because the axis of each first sleeve 331 is equidistant from the center A of the material carrying tray 2, and the first sleeves 331 are evenly distributed relative to the center A of the material carrying tray 2 in the guide direction of the guide rail 35, when the power mechanism 34 drives the three sliders 32 to move synchronously toward the center A of the material carrying tray 2, the three first sleeves 331 disposed on the three sliders 32 will move synchronously until the rotating surfaces of the first sleeves 331 contact the outer wall of the reel 4 carried on the material carrying tray 2, at which point the three first sleeves 331 clamp the reel 4.

[0030] Obviously, in order to achieve smooth clamping, the rotating surface of the first sleeve 331 needs to be higher than the upper surface of the material carrying tray 2 and be able to contact the outer wall of the reel material 4 placed on the reel material carrying tray 2. Therefore, the installation height of the first sleeve 331 matches the height of the reel material 4 on the material carrying tray 2, and the height of the rotating surface of the first sleeve 331 can be set within the height range of the reel material 4. Preferably, the height of the clamping sleeve 33 can also be adjusted by providing a height adjustment mechanism.

[0031] Furthermore, when the clamping and centering device provided by the present invention needs to clamp and center the top layer of reel material 4 in a stack of varying numbers of reels (for example, sometimes clamping and centering the top layer of reel material 4 in a stack of two reels, and sometimes clamping and centering the top layer of reel material 4 in a stack of five reels), the height of the first sleeve 331 needs to be adjusted back and forth, which increases production time. Furthermore, if a height adjustment mechanism is provided, the structural complexity and cost of the clamping mechanism 3 are increased. To address this issue, in other embodiments, each set of clamping sleeves 33 may include N sleeves, that is, each set of clamping sleeves 33 may also include N-1 other sleeves in addition to the first sleeve 331, where N is a positive integer greater than or equal to 2. The first sleeve 331 and the N-1 other sleeves are coaxially arranged from bottom to top to form a sleeve group, and the diameter of the rotating surface of each sleeve in the clamping sleeve 33 increases from bottom to top. The specific working principles of these embodiments are described below in detail by taking N=2 (ie, each group of clamping sleeves 33 includes 2 sleeves) as an example.

[0032] Preferably, each set of clamping sleeves 33 includes a first sleeve 331 and a second sleeve 332, which are used to clamp and center the top layer of reel material 4 in a stack of reel materials with a maximum of two layers; wherein the first sleeve 331 and the second sleeve 332 are coaxially arranged from bottom to top, and the range of contact between the first sleeve 331 and the second sleeve 332 and the reel material 4 placed on the material carrying tray 2 is set to be a concentric rotation surface, and the rotation surface diameter of the second sleeve 332 located on the upper side is larger than the rotation surface diameter of the first sleeve 331 located on the lower side; in addition, by adjusting and controlling the height of the first sleeve 331 and the second sleeve 332, it is ensured that the first sleeve 331 can only contact the first layer of reel material 4 on the material carrying tray 2, and the second sleeve 332 can only contact the second layer of reel material 4 on the material carrying tray 2. The working principle of this clamping sleeve 33 is as follows: (1) When two layers of reel material 4 are placed on the material carrying tray 2, the power mechanism 34 drives the slider 32 and the connecting rod mechanism 31 to drive multiple groups of clamping sleeves 33 to move toward the center A of the material carrying tray 2. During this process, if the center of the reel material 4 on the upper side (i.e., the second layer of reel material 4) does not coincide with the center A of the material carrying tray 2, the reel material 4 on the upper side (i.e., the second layer of reel material 4) will be pushed toward the center by the second sleeve 332 set on the upper side of the clamping sleeve 33 during the movement, thereby achieving a precise position adjustment function; finally, because the second sleeve 332 can only contact the second layer of reel material 4 on the material carrying tray 2, and the diameter of its rotating surface is larger than the diameter of the rotating surface of the first sleeve 331, even if the diameter of the second layer of reel material 4 is smaller than the diameter of the first layer of reel material 4, as long as the diameter difference is smaller than the diameter difference between the rotating surfaces of the second sleeve 332 and the first sleeve 331, the precise position adjustment function of the second layer of reel material 4 can be achieved in this way.

[0033] (2) When there is only one layer of reel material 4 on the material carrying tray 2, the power mechanism 34 drives the slider 32 and the connecting rod mechanism 31 to drive multiple sets of clamping sleeves 33 to move toward the center A of the material carrying tray 2. During this process, if the center of the reel material 4 does not coincide with the center A of the material carrying tray 2, the reel material 4 will be pushed toward the center by the first sleeve 331 arranged on the lower side of the clamping sleeve 33 during the movement, thereby realizing the precise position adjustment function.

[0034] It can be seen that when each group of clamping sleeves 33 includes N sleeves, the diameter of the rotating surface of the sleeves in each group of clamping sleeves 33 increases from bottom to top, and each sleeve can only contact one layer of the reel material 4. This type of clamping sleeve 33 can clamp and center the top layer of reel material 4 in a stack of reel materials with a maximum of N layers. When it is necessary to clamp and center the top layer of the reel material 4 of a stack of reel materials with M layers, the power mechanism 34 drives the slider 32 and the connecting rod mechanism 31 to drive multiple sets of clamping sleeves 33 to move toward the center A of the material carrying tray 2. During this process, if the center of the reel material 4 of the Mth layer (the top layer of the reel material stack) from the bottom to the top does not coincide with the center A of the material carrying tray 2, the reel material 4 of the Mth layer will be set in the clamping sleeve 33, and the other Mth sleeves from the bottom to the top will be pushed toward the center during the movement, thereby realizing the precise position adjustment function; wherein, M is a positive integer less than or equal to N and greater than or equal to 1.

[0035] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A clamping and centering device for reel materials, characterized in that: include: Base plate, material carrying tray and clamping mechanism; The base plate is arranged at the bottom; The material carrying tray is fixedly connected to the bottom plate and is used to carry the reel material; The clamping mechanism is mounted on the base plate, and includes a main body and at least three groups of clamping sleeves, each group of clamping sleeves including at least one sleeve coaxially arranged in a vertical direction. The main body of the clamping mechanism is disposed between the base plate and the material carrying tray, and the clamping sleeves are disposed outside the main body and higher than the material carrying tray. The clamping mechanism is configured to: synchronously move the at least three groups of clamping sleeves toward / away from the center of the material carrying tray, so that when approaching the center of the material carrying tray, the reel material placed on the material carrying tray is clamped and centered by the clamping sleeves.

2. The clamping and centering device for reel materials according to claim 1, characterized in that: When each group of clamping sleeves includes N sleeves arranged coaxially, the diameters of the rotating surfaces of the N sleeves increase sequentially from bottom to top; wherein N is a positive integer greater than or equal to 2.

3. The clamping and centering device for reel materials according to claim 2, characterized in that: Each set of clamping sleeves includes a first sleeve located on the lower side and a second sleeve located on the upper side.

4. The clamping and centering device for reel materials according to claim 1, characterized in that: The clamping mechanism further comprises: a connecting rod mechanism, at least two sliders, at least two guide rails and a power mechanism; The linkage mechanism includes at least two first linkages and at least two second linkages; one end of each first linkage is rotatably connected to the base plate, and the rotation connection point coincides with the center of the material carrying tray in the vertical direction; the other end of each first linkage is hinged to one end of a second linkage, and the other end of the second linkage is rotatably connected to one of the sliders; the at least two first linkages and the at least two second linkages are symmetrically or evenly distributed relative to the center of the material carrying tray. Each slider is slidably connected to a guide rail, the guide rail is provided on the base plate, and each slider is provided with at least one set of the clamping sleeves; the at least two sliders and the at least two guide rails are symmetrically or evenly distributed relative to the center of the material carrying tray; The power mechanism is disposed on the bottom plate and connected to the slider, and is used to drive the slider to approach or move away from the center of the material carrying tray.

5. The clamping and centering device for reel materials according to claim 4, characterized in that: The clamping and centering device for the reel material includes four groups of clamping sleeves, with two groups of clamping sleeves installed on each slider; the four groups of clamping sleeves are symmetrically arranged left and right / front and back on a circle with the center of the material carrying tray as the center.

6. The clamping and centering device for reel materials according to claim 4, characterized in that: The clamping and centering device for the reel material includes three groups of clamping sleeves. Each slider is equipped with one group of clamping sleeves. The three groups of clamping sleeves are evenly distributed on a circle with the center of the material carrying tray as the center.

7. The clamping and centering device for reel materials according to claim 4, characterized in that: The power mechanism is a cylinder, the fixed side of the cylinder is fixedly connected to the base plate, and the telescopic side of the cylinder is hinged to one of the sliders.

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