CN107870027A - A weighing device for slender materials - Google Patents
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- CN107870027A CN107870027A CN201710787807.8A CN201710787807A CN107870027A CN 107870027 A CN107870027 A CN 107870027A CN 201710787807 A CN201710787807 A CN 201710787807A CN 107870027 A CN107870027 A CN 107870027A
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- 238000005303 weighing Methods 0.000 title claims abstract description 81
- 239000000463 material Substances 0.000 title claims abstract description 46
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 10
- 238000005452 bending Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract 1
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- 238000004519 manufacturing process Methods 0.000 description 13
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- 239000007787 solid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
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- 238000009434 installation Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G17/00—Apparatus for or methods of weighing material of special form or property
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- G—PHYSICS
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- G01G—WEIGHING
- G01G23/00—Auxiliary devices for weighing apparatus
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Abstract
Description
技术领域technical field
本发明创造涉及物理称重技术领域，特别涉及一种细长物料称重装置。The invention relates to the technical field of physical weighing, in particular to a weighing device for elongated materials.
背景技术Background technique
随着社会的进步，制造业迅猛发展，自动化流水线式生产已经成为工业生产的主要模式。在细长物料的自动化流水线式生产中，需要在工位上用称重装置来对生产出的细长物料进行重量监测，从而保证生产品质。但由于传统的称重装置使用环境要求高，而细长体物料的自动化生产工况复杂，导致在实际生产过程中经常发生称重装置损坏现象，因而目前在细长体物料的工业自动化生产中的大部分称重工位仍然由人工称重完成，造成称重效率低，出错率高。With the progress of society and the rapid development of manufacturing industry, automated assembly line production has become the main mode of industrial production. In the automatic assembly line production of slender materials, it is necessary to use a weighing device at the station to monitor the weight of the slender materials produced, so as to ensure the production quality. However, due to the high environmental requirements for the use of traditional weighing devices, and the complex automated production conditions for slender materials, damage to the weighing device often occurs in the actual production process. Most of the weighing stations are still completed by manual weighing, resulting in low weighing efficiency and high error rate.
发明内容Contents of the invention
本发明创造的目的是改善称重装置的损坏率，使其适用于细长物料的自动化流水线式生产。The purpose of the invention is to improve the damage rate of the weighing device, so that it is suitable for automatic assembly line production of elongated materials.
发明人发现：在细长物料的自动化流水线式生产中，由于物料本身具有细长的特点，为便于自动化生产，常常将物料以竖直放置的方式来进行加工制造，因而在细长物料被放至或移出称重装置的过程(简称称重过程)中，细长物料会将由机械手所带来的水平力和绕水平轴的扭力都传递至称重装置(为表述方便，本文将水平方向上的水平力和绕水平轴的扭力统称为横向冲击力)，且由于杠杆作用，传递到称重装置的横向冲击力会变得更大。由于传统的称重装置，其防护措施大多采用弹簧或者机械硬限位的方法来实现过载保护，因而只能保护称重装置免受竖直方向上的冲击力损坏。若是将传统的称重装置应用至细长物料的自动化流水线式生产中，称重装置容易受横向冲击力损坏，导致影响自动化流水线式生产的正常运行。The inventors found that: in the automatic assembly line production of slender materials, due to the slender characteristics of the materials themselves, in order to facilitate automatic production, the materials are often processed and manufactured in a vertically placed manner, so when the slender materials are placed During the process of moving to or from the weighing device (referred to as the weighing process), the long and thin material will transmit the horizontal force brought by the manipulator and the torque around the horizontal axis to the weighing device (for the convenience of expression, this article will use the horizontal direction The horizontal force and the torsion around the horizontal axis are collectively referred to as lateral impact force), and due to leverage, the lateral impact force transmitted to the weighing device will become larger. Due to the traditional weighing device, most of its protective measures adopt the method of spring or mechanical hard limit to realize overload protection, so it can only protect the weighing device from being damaged by the impact force in the vertical direction. If the traditional weighing device is applied to the automatic assembly line production of slender materials, the weighing device is easily damaged by lateral impact force, which will affect the normal operation of the automatic assembly line production.
基于此，发明人提出以下技术方案来实现本发明创造的目的：Based on this, the inventor proposes the following technical solutions to realize the purpose of the invention:
提供一种细长物料称重装置，包括称重传感器和秤盘，所述秤盘的底部设有受非竖直外力则弯折变形的弹性连接件，该弹性连接件安装在称重传感器的称重端上。A weighing device for slender materials is provided, including a load cell and a weighing pan. The bottom of the weighing pan is provided with an elastic connecting piece that is bent and deformed by a non-vertical external force, and the elastic connecting piece is installed on the load cell. On the weighing end.
其中，所述秤盘向下凹陷成中空的细长腔体，该细长腔体的底部设有弹性连接件，其腔口朝上以供物料进出。Wherein, the weighing pan is recessed downwards to form a hollow elongated cavity, and the bottom of the elongated cavity is provided with an elastic connecting piece, and the mouth of the cavity faces upwards for materials to enter and exit.
其中，所述细长腔体的侧壁设有通孔A。Wherein, a through hole A is provided on the side wall of the elongated cavity.
其中，所述秤盘的本体由多根枝条制成，各根枝条的底部相互聚拢以形成本体的底部，本体的顶部设有供物料进出的开口。Wherein, the body of the weighing pan is made of a plurality of branches, the bottoms of each branch are gathered together to form the bottom of the body, and the top of the body is provided with an opening for materials to enter and exit.
其中，所述弹性连接件内部被掏空从而形成中空部。Wherein, the inside of the elastic connecting member is hollowed out to form a hollow portion.
其中，所述弹性连接件的侧壁设有通孔B。Wherein, the side wall of the elastic connector is provided with a through hole B.
其中，所述弹性连接件的外形是侧面和两个端面的外轮廓都沿竖直方向呈中间向外凸出的形状；或者所述弹性连接件的外形是侧面和两个端面的外轮廓都沿竖直方向呈中间向内凹进的形状。Wherein, the shape of the elastic connector is that the outer contours of the side surface and the two end faces are all convex outwards in the middle along the vertical direction; or the shape of the elastic connector is that the outer contours of the side surface and the two end faces are both The shape is inwardly concave in the middle along the vertical direction.
其中，在水平方向上，所述弹性连接件中部的横截面积小于其端部的横截面积。Wherein, in the horizontal direction, the cross-sectional area of the middle part of the elastic connector is smaller than the cross-sectional area of the end part.
其中，所述秤盘下方设有嵌入部来把秤盘固定在弹性连接件上。Wherein, an embedding part is provided under the weighing pan to fix the weighing pan on the elastic connecting piece.
其中，所述秤盘的底部朝下凸起以形成所述嵌入部，该嵌入部嵌入部嵌入弹性连接件的顶部。Wherein, the bottom of the weighing pan protrudes downward to form the embedding part, and the embedding part is embedded in the top of the elastic connecting member.
其中，所述嵌入部嵌入部和秤盘一体成型，在水平方向上，该嵌入部的底部往外扩展从而形成用于与弹性连接件相互锁紧的卡扣件。Wherein, the embedded part and the weighing pan are integrally formed, and in the horizontal direction, the bottom of the embedded part expands outwards to form a buckle for locking with the elastic connecting part.
其中，所述卡扣件的本体呈圆台状，该本体远离秤盘的底面为该圆台的下底面。Wherein, the body of the buckle is in the shape of a circular platform, and the bottom surface of the body away from the weighing pan is the lower bottom surface of the circular platform.
其中，所述称重传感器的称重端上设有用于供弹性连接件过盈嵌入的固定筒体，弹性连接件不完全嵌入在固定筒体中，固定筒体的内侧壁夹紧弹性连接件的外侧壁。Wherein, the weighing end of the load cell is provided with a fixed cylinder for the interference insertion of the elastic connector, the elastic connector is not completely embedded in the fixed cylinder, and the inner wall of the fixed cylinder clamps the elastic connector of the outer wall.
本发明创造的有益效果：Beneficial effects created by the present invention:
本发明创造通过在秤盘的底部与称重传感器的称重端之间设置弹性连接件，在称重过程中，细长物料所受的横向冲击力会被传递至弹性连接件，致使弹性连接件发生弯折变形，使弹性连接件产生一个横向的反弹力来抵消横向冲击力，弹性连接件起到一个缓冲保护的作用，使横向冲击力无法传递至称重传感器的称重端，从而保护称重传感器的称重端免受横向冲击力损坏，达到改善称重装置的损坏率的目的，使称重装置适用于细长物料的自动化流水线式生产。The invention creates an elastic connecting piece between the bottom of the weighing pan and the weighing end of the load cell. During the weighing process, the lateral impact force on the elongated material will be transmitted to the elastic connecting piece, resulting in elastic connection The bending deformation of the parts makes the elastic connecting parts produce a lateral rebound force to offset the lateral impact force, and the elastic connecting parts play a role of buffer protection, so that the lateral impact force cannot be transmitted to the weighing end of the load cell, thus protecting The weighing end of the load cell is protected from damage by lateral impact, so as to improve the damage rate of the weighing device and make the weighing device suitable for the automatic assembly line production of slender materials.
附图说明Description of drawings
利用附图对发明创造作进一步说明，但附图中的实施例不构成对本发明创造的任何限制，对于本领域的普通技术人员，在不付出创造性劳动的前提下，还可以根据以下附图获得其它的附图。The invention is further described by using the accompanying drawings, but the embodiments in the accompanying drawings do not constitute any limitation to the present invention. For those of ordinary skill in the art, on the premise of not paying creative work, they can also be obtained according to the following drawings: Additional drawings.
图1是称重装置的结构示意图。Figure 1 is a schematic structural view of the weighing device.
图2是秤盘的结构示意图。Fig. 2 is a structural schematic diagram of the weighing pan.
图3是秤盘开孔后的结构示意图。Fig. 3 is a schematic diagram of the structure after the weighing pan is opened.
图4是由枝条制成的秤盘的结构示意图。Fig. 4 is a structural schematic diagram of a weighing pan made of branches.
图5是秤盘与弹性连接件粘贴的结构示意图。Fig. 5 is a structural schematic diagram of sticking the weighing pan and the elastic connector.
图6是卡扣件为圆台状时的结构示意图。Fig. 6 is a schematic structural view of the buckle in the shape of a truncated cone.
图7是卡扣件为阶梯状时的结构示意图。Fig. 7 is a structural schematic view of the buckle in a stepped shape.
图8是秤盘与弹性连接件螺栓连接的结构示意图。Fig. 8 is a structural schematic diagram of the bolted connection between the weighing pan and the elastic connector.
图9是弹性连接件内部被掏空后的结构示意图。Fig. 9 is a schematic diagram of the structure of the elastic connector after being hollowed out.
图10是弹性连接件开孔后的第一结构示意图。Fig. 10 is a schematic view of the first structure after the elastic connector is opened.
图11是弹性连接件为实心支撑柱时的结构示意图。Fig. 11 is a schematic diagram of the structure when the elastic connector is a solid support column.
图12是弹性连接件开孔后的第二结构示意图。Fig. 12 is a schematic diagram of the second structure after the elastic connector is opened.
图13是弹性连接件和称重传感器螺钉连接的结构示意图。Fig. 13 is a structural schematic diagram of the screw connection between the elastic connector and the load cell.
图14是弹性连接件和称重传感器粘贴的结构示意图。Fig. 14 is a schematic structural diagram of elastic connectors and load cells pasted together.
图15是弹性连接件嵌入固定筒体的结构示意图。Fig. 15 is a schematic diagram of the structure of the elastic connector embedded in the fixed cylinder.
具体实施方式Detailed ways
如图1，称重装置由秤盘1、弹性连接件2和称重传感器3组成，其中秤盘1向下凹陷成图2中的细长腔体，其中细长腔体中空，中空部21分的横截面积略大于细长体物料的横截面积，保证细长体物料竖直中心线与秤盘1质心接近或重合，减小机械手作用到称盘上的扭矩，细长腔体的腔口朝上以供物料进出。如图3，细长腔体的侧壁开有多个通孔A，以减少称盘侧壁和细长物料之间的接触面积，由于细长物料传递给秤盘1的扭力依靠与秤盘1之间的相互摩擦来传递，接触面积减少，细长物料传递给秤盘1的扭力也将相应减少。为了最大程度的降低扭力，也可以直接用多根枝条来制成图4中秤盘1的本体，各根枝条的底部相互聚拢以形成本体的底部，本体的顶部开设一个供物料进出的开口，这样称盘侧壁和细长物料之间的接触面积即可实现最小。As shown in Figure 1, the weighing device is composed of a weighing pan 1, an elastic connector 2 and a load cell 3, wherein the weighing pan 1 is recessed downwards into the elongated cavity in Figure 2, wherein the elongated cavity is hollow, and the hollow portion 21 The cross-sectional area of the slender body material is slightly larger than that of the slender body material, ensuring that the vertical centerline of the slender body material is close to or coincides with the center of mass of the weighing pan 1, reducing the torque that the manipulator acts on the weighing pan, and the slender cavity The mouth of the cavity faces upwards for material to enter and exit. As shown in Figure 3, the side wall of the slender cavity has multiple through holes A to reduce the contact area between the side wall of the weighing pan and the slender material, because the torque transmitted to the weighing pan 1 by the slender material depends on the weighing pan 1 through mutual friction to transmit, the contact area is reduced, and the torque transmitted to the weighing pan 1 by the slender material will also be correspondingly reduced. In order to reduce the torsion to the greatest extent, it is also possible to directly use multiple branches to form the body of the weighing pan 1 in Figure 4, the bottoms of the branches are gathered together to form the bottom of the body, and the top of the body is provided with an opening for materials to enter and exit. This minimizes the contact area between the side walls of the weighing pan and the elongated material.
秤盘1的底部与弹性连接件2连接，其连接方式是可以如图5所示的秤盘1贴接在弹性连接件2上方，但优选的方式是嵌入，具体地，如图6到图8，在秤盘1的底部设置一个嵌入部，该嵌入部嵌入弹性连接件2的顶部，以把秤盘1固定在弹性连接件2上，这样秤盘1在传递横向冲击力时会以嵌入部为轴倾倒，此时嵌入部挤压弹性连接件2，由于弹性连接件2本身材质具有弹性，弹性连接件2被嵌入部挤压的部分会产生一个弹性恢复力来抵消部分横向冲击力，形成第一级缓冲保护。其中嵌入部可以如图8一样采用螺栓13，即秤盘1的底部与弹性连接件2直接螺栓13连接即可。但为简单起见，则可以将嵌入部和秤盘1一体成型，并在水平方向上，使该嵌入部的底部往外扩展从而形成卡扣件12，这样嵌入部嵌入到弹性连接件2内时，卡扣件12与弹性连接件2自然相互锁紧，省去了螺栓13拧紧的过程。其中，卡扣件12的本体可以是如图6所示的圆台状，也可以是如图7所示的阶梯状，但最优的方案是选用圆台状，其中卡扣件12本体远离秤盘1的底面为该圆台的下底面，由于圆台状本体的侧壁面为弧形面，在需更换秤盘1时，弧形面的设置可以方便秤盘1从弹性连接件2中拨出。The bottom of the weighing pan 1 is connected to the elastic connector 2, and the connection method is that the weighing pan 1 can be pasted above the elastic connector 2 as shown in Figure 5, but the preferred way is to embed it, specifically, as shown in Figure 6 to Figure 8. An embedding part is provided at the bottom of the weighing pan 1, and the embedding part is embedded in the top of the elastic connecting part 2 to fix the weighing pan 1 on the elastic connecting part 2, so that the weighing pan 1 will be embedded in a transversal impact force. At this time, the embedded part squeezes the elastic connecting part 2. Since the material of the elastic connecting part 2 itself is elastic, the part of the elastic connecting part 2 squeezed by the embedded part will generate an elastic restoring force to offset part of the lateral impact force. Form the first level of buffer protection. The embedded part can use bolts 13 as shown in FIG. 8 , that is, the bottom of the weighing pan 1 and the elastic connecting member 2 can be directly connected by bolts 13 . However, for the sake of simplicity, the embedded part and the weighing pan 1 can be integrally formed, and in the horizontal direction, the bottom of the embedded part can be expanded outwards to form the buckle 12, so that when the embedded part is embedded in the elastic connecting part 2, The locking member 12 and the elastic connecting member 2 are naturally locked to each other, and the process of tightening the bolt 13 is omitted. Wherein, the body of the buckle 12 can be a circular platform as shown in Figure 6, or a stepped shape as shown in Figure 7, but the optimal solution is to choose a circular platform, wherein the body of the buckle 12 is far away from the weighing pan The bottom surface of 1 is the lower bottom surface of the round platform. Since the side wall surface of the round platform-shaped body is an arc surface, when the weighing pan 1 needs to be replaced, the setting of the arc surface can facilitate the weighing pan 1 to be pulled out from the elastic connector 2.
弹性连接件2是由弹性材料构成的细长体结构，其侧壁为圆柱面以易于各个方向上的折弯变形。如图11，弹性连接件2可以采用直径较小的实心支撑柱，其弹性模量在弹性范围内使用。但为了易于折弯变形，可以将弹性连接件2的内部掏空从而形成如图9所示的中空部21。进一步地，如图10和图12，在述弹性连接件2的侧壁设有用于把中空部21和外界连通起来的通孔B，从而使弹性连接件2更易折弯变形，优选地，把弹性连接件的外形制成图10中侧面和两个端面的外轮廓都沿竖直方向呈中间向外凸出的形状，或者制成图12中侧面和两个端面的外轮廓都沿竖直方向呈中间向内凹进的形状，这样设置的好处在于当受到竖直外力作用时，弹性连接件侧壁弯曲的结构在水平方向上的振荡时间要少于弹性连接件侧壁竖直的结构。进一步地，在水平方向上，弹性连接件2中部的横截面积小于其端部的横截面积，且弹性连接件2中部的强度要小于其端部的强度，使弹性连接件2更易在其中部处弯折。横向冲击力被传递至弹性连接件2时，弹性连接件2发生折弯变形，使弹性连接件2产生一个横向的反弹力来抵消横向冲击力，形成第二级缓冲保护。The elastic connector 2 is a slender structure made of elastic material, and its side wall is a cylindrical surface to facilitate bending and deformation in all directions. As shown in Fig. 11, the elastic connecting member 2 can adopt a solid support column with a smaller diameter, and its elastic modulus is used within the elastic range. However, in order to be easily bent and deformed, the inside of the elastic connecting member 2 can be hollowed out to form a hollow portion 21 as shown in FIG. 9 . Further, as shown in Fig. 10 and Fig. 12, the side wall of the elastic connector 2 is provided with a through hole B for connecting the hollow part 21 with the outside world, thereby making the elastic connector 2 easier to bend and deform, preferably, the The shape of the elastic connector is made into a shape in which the outer contours of the side and two end faces in Fig. 10 are all protruding in the middle along the vertical direction, or the outer contours of the side and two end faces in Fig. 12 are all along the vertical direction. The direction is concave inward in the middle. The advantage of this arrangement is that when subjected to a vertical external force, the oscillation time of the structure with the curved side wall of the elastic connector in the horizontal direction is shorter than that of the vertical structure with the side wall of the elastic connector . Further, in the horizontal direction, the cross-sectional area of the middle part of the elastic connector 2 is smaller than the cross-sectional area of the end part, and the strength of the middle part of the elastic connector 2 is smaller than the strength of the end part, so that the elastic connector 2 is easier to be placed in it. Bend at the part. When the lateral impact force is transmitted to the elastic connector 2, the elastic connector 2 is bent and deformed, so that the elastic connector 2 generates a lateral rebound force to counteract the lateral impact force, forming a second level of buffer protection.
弹性连接件2的底部可以直接与称重传感器3的称重端连接，其连接方式可以是如图13所示的螺钉32固定，也可以是如图14所示的粘贴固定，但较佳的方式是如图15所示，在称重传感器3的称重端上设置一个用于供弹性连接件2过盈嵌入的固定筒体31，弹性连接件2不完全嵌入在固定筒体31中，固定筒体31的内侧壁夹紧弹性连接件2的外侧壁，从而形成第三级缓冲保护，弹性连接件2折弯时，固定筒体31抓紧弹性连接件2，从而为弹性连接件2支撑力以使其快速恢复到初始的竖直状态。其中，秤盘1、弹性连接件2和称重传感器3都采用细长体结构，以充分利用空间，适用于细长体物料的自动化生产中的紧凑排布安装方式。The bottom of the elastic connector 2 can be directly connected to the weighing end of the load cell 3, and the connection method can be fixed by a screw 32 as shown in Figure 13, or can be fixed by sticking as shown in Figure 14, but preferably The method is as shown in Fig. 15, on the weighing end of the load cell 3, a fixed cylinder 31 for the interference insertion of the elastic connector 2 is provided, and the elastic connector 2 is not completely embedded in the fixed cylinder 31, The inner wall of the fixed cylinder 31 clamps the outer wall of the elastic connector 2 to form a third level of buffer protection. When the elastic connector 2 is bent, the fixed cylinder 31 grasps the elastic connector 2 to support the elastic connector 2 Force to quickly return to the original vertical state. Among them, the weighing pan 1, the elastic connector 2 and the load cell 3 all adopt a slender body structure to make full use of space, and are suitable for compact arrangement and installation in the automatic production of slender body materials.
需要说明的是，弹性连接件2与秤盘1可以作为独立的两个部件来实施，也可以做为一个整体。It should be noted that the elastic connecting member 2 and the weighing pan 1 can be implemented as two independent components, or as a whole.
最后应当说明的是，以上实施例仅用以说明本发明创造的技术方案，而非对本发明创造保护范围的限制，尽管参照较佳实施例对本发明创造作了详细地说明，本领域的普通技术人员应当理解，可以对本发明创造的技术方案进行修改或者等同替换，而不脱离本发明创造技术方案的实质和范围。Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present invention, rather than to limit the protection scope of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art Personnel should understand that the technical solution of the present invention can be modified or equivalently replaced without departing from the essence and scope of the technical solution of the present invention.
Claims (13)
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