Weighing and carrying device

Abstract

The invention relates to the technical field of weight detection equipment, in particular to a weighing and carrying device. The weighing and carrying device comprises a weighing mechanism and a clamping mechanism, the clamping mechanism can clamp a workpiece, the weighing mechanism comprises a weighing sensor, a bearing part, a suspension part, a jacking structure and a positioning part, the bearing part is fixed to the deformation end of the weighing sensor, the suspension part can be fixed to the bearing part in a suspended mode, the jacking structure can drive the suspension part to be separated from the bearing part, and the positioning part is fixed to the bearing part. The suspension part is fixedly connected with the clamping mechanism, the weighing and carrying device has a first protection mode and a second protection mode, in the first protection mode, the bearing part and the weighing sensor are both fixedly connected with the positioning part, the suspension part is separated from the bearing part, and in the second protection mode, the weighing and carrying device is switched between a first working state and a second working state. In the first working state, the hanging piece is fixedly connected with the positioning piece, and the hanging piece is separated from the bearing piece, and in the second working state, the hanging piece is fixedly connected with the positioning piece, and the hanging piece is fixed to the bearing piece in a hanging mode.

Description

Technical Field

[0001] This invention relates to the field of weight detection equipment technology, and more particularly to a weighing and handling device. Background Technology

[0002] In the workpiece processing production line, handling devices are needed to clamp and fix the workpieces and move them between various processing units. Furthermore, after each processing unit processes the workpiece, it needs to be weighed to verify its quality. Moreover, the workpiece needs to be weighed once after processing at each processing unit.

[0003] In related technologies, the weighing and detection of workpieces requires a transport device to transfer and fix the workpiece and move it to a weighing platform, where the platform detects the workpiece's weight. After the weighing and detection are completed, the transport device re-clamps and fixes the workpiece and moves it to the next processing unit for the next processing step. This method of weighing workpieces requires repeated clamping, increasing cycle time, making the operation cumbersome, and reducing processing efficiency. A weighing gripper has been developed, with a carrier component fixed to the deformation end of the weighing sensor. The carrier component connects to the gripper, enabling weighing of the workpiece during transfer after clamping. During workpiece transfer, the workpiece's acceleration and off-center loading can affect the accuracy of the weighing sensor and may even damage it. Furthermore, the carrier component has a certain mass, and during transport, various external forces drive the gripper and carrier component to repeatedly bend the deformation end of the weighing sensor. The number of times the deformation end of the load cell is bent determines its service life. Repeatedly bending the deformation end of the load cell during transportation will greatly reduce the service life of the weighing gripper.

[0004] Therefore, there is an urgent need to invent a weighing and handling device to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a weighing and handling device to protect the weighing sensor during transportation and operation, thereby extending its service life.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] Weighing and handling device, including:

[0008] A clamping mechanism, which is capable of clamping and fixing a workpiece;

[0009] A weighing mechanism includes a load cell, a load-bearing component, a suspension component, a lifting structure, and a positioning component. The load cell is fixed to the deformable end of the load cell. The suspension component is suspended and fixed to the load cell. The lifting structure can drive the suspension component to move upward and separate from the load cell. The suspension component is fixedly connected to the clamping mechanism. The positioning component is fixedly connected to the load cell and the load cell or to the suspension component.

[0010] The weighing and handling device has a first protection mode and a second protection mode. In the first protection mode, the load-bearing component and the weighing sensor are fixedly connected to the positioning component, and the suspension component is separated from the load-bearing component.

[0011] In the second protection mode, the weighing and handling device can switch between a first working state and a second working state. In the first working state, the suspension member is fixedly connected to the positioning member and the suspension member is separated from the load-bearing member. In the second working state, the suspension member is fixedly connected to the positioning member and the suspension member is suspended and fixed to the load-bearing member.

[0012] As an optional solution, the positioning element can switch between a first connection state and a second connection state. The positioning element has a first positioning part and a second positioning part. When the positioning element is in the first connection state, the weighing and handling device is in the first protection mode, and the carrier is fixedly connected to the first positioning part.

[0013] When the positioning component is in the second connection state, the weighing and handling device is in the first working state of the second protection mode, and the suspension component is fixedly connected to the second positioning part.

[0014] As an optional solution, the first positioning part has a first stop boss and a second stop boss. The first stop boss can be fixedly connected to the side wall of the bearing member in the horizontal direction; the second stop boss can be fixedly abutted against the upper end face of the bearing member in the vertical direction.

[0015] The second positioning part can be fixedly connected to the side wall of the suspension member along the horizontal direction.

[0016] As an optional solution, the first positioning part also has a third stop boss, and the weighing and conveying device also includes a first fixed column, a first limiting column and a second limiting column. In the first protection mode, the first fixed column can drive the suspension member to move upward relative to the carrier member in the vertical direction, and the third stop boss can abut and fix with the upper end surface of the suspension member.

[0017] In the second protection mode, the positioning element can be fixed upward to the first limiting post and the second limiting post respectively.

[0018] As an optional solution, the weighing and handling device further includes:

[0019] A lifting assembly, which is the lifting structure, includes a first driving component, a first transmission module, and an abutment component. The input end of the first transmission module is connected to the output end of the first driving component. The output end of the first transmission module is located below the positioning component and can move along the vertical direction. The abutment component is fixed to the output end of the first transmission module and is configured to abut against the positioning component.

[0020] As an optional solution, the weighing mechanism further includes:

[0021] A first housing, the first housing having a first receiving cavity, wherein the weighing sensor, the bearing member, the suspension member and the positioning member are all located within the first receiving cavity;

[0022] In the first protection mode, the weighing sensor and the positioning component are fixedly connected to the first housing, and the bearing component is fixedly connected to the positioning component;

[0023] In the second protection mode, the weighing sensor is fixedly connected to the first housing, the positioning member is fixedly connected to the suspension member, and is movably disposed within the first receiving cavity in a preset range along the vertical direction.

[0024] As an optional solution, the lower end of the suspension component is provided with a mounting flange, which is fixedly connected to the upper end of the clamping mechanism.

[0025] Alternatively, the center line of the mounting flange may coincide with the center line of the clamping mechanism.

[0026] And / or, the mounting flange is provided with a plurality of first weight-reducing through holes extending in the vertical direction, the first weight-reducing through holes forming a wiring channel.

[0027] As an optional solution, the weighing and handling device further includes:

[0028] The display mechanism is communicatively connected to the weighing sensor and is used to display the detection information of the weighing mechanism. The display mechanism is integrated with the weighing mechanism or the display mechanism is set separately from the weighing mechanism.

[0029] As an optional solution, the weighing and handling device further includes:

[0030] A transport mechanism is connected to the weighing mechanism, and the transport mechanism is capable of driving the weighing mechanism to move arbitrarily within space.

[0031] The beneficial effects of this invention are:

[0032] The weighing and handling device provided by this invention, by setting a weighing sensor in the weighing mechanism, fixing a carrier to the deformable end of the weighing sensor, and setting a suspension member that can be suspended and fixed to the carrier, and setting a lifting structure that can drive the suspension member to move upward and separate from the carrier, and fixing the suspension member to a clamping mechanism that can clamp and fix the workpiece, realizes the clamping, fixing and weighing of the workpiece. Combined with the subsequent driving of the weighing mechanism in space, it realizes the weighing of the workpiece during the transfer process. By setting a positioning member, the carrier and the weighing sensor are fixedly connected to the positioning member respectively, and the suspension member is separated from the carrier, which enables the weighing and handling device to... In the first protection mode, the carrier component is relatively fixed to the deformation end of the load cell under the action of the positioning component. This solves the problem of repeated bending of the load cell's deformation end by various external forces during the transportation process of the weighing and handling device, improving the protection of the load cell and thus extending the service life of the weighing and handling mechanism. By fixing the suspension component to the positioning component and using a lifting structure to drive the suspension component upward to separate it from the carrier component, the weighing and handling device can be put into the first working state of the second protection mode. This achieves the goal of only needing to weigh the workpiece when it is not required to weigh the workpiece. During the transfer process, the gravitational load of the suspension component, clamping mechanism, and the workpiece clamped and fixed by the clamping mechanism is transferred to the positioning component. The load-bearing component does not bear the gravitational load of the suspension component, clamping mechanism, and the workpiece clamped and fixed by the clamping mechanism at this time. This solves the problem of the workpiece's acceleration and off-center load affecting the accuracy of the weighing sensor and damaging the weighing sensor during workpiece transfer. By fixing the suspension component to the positioning component and preventing the lifting structure from driving the suspension component upward, the suspension component is suspended and fixed to the load-bearing component under its own weight. This allows the weighing and handling device to be in the second working state of the second protection mode, realizing the operation when workpiece weighing is required. During the process, the gravity load of the suspension component, positioning component, clamping mechanism, and the workpiece clamped and fixed by the clamping mechanism is transferred to the bearing component. Under the action of the above load, the bearing component bends the deformation end of the load cell, realizing the gravity detection of the suspension component, positioning component, clamping mechanism, and the workpiece clamped and fixed by the clamping mechanism by the load cell. By using the switching between the first working state and the second working state of the weighing and handling device in the second protection mode, the purpose of connecting the workpiece to the deformation end of the load cell is achieved only when the workpiece needs to be weighed in actual work, which further improves the protection of the load cell and increases the service life of the weighing and handling device. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the weighing and handling device provided in an embodiment of the present invention;

[0034] Figure 2 This is a schematic diagram of the weighing mechanism of the weighing and handling device provided in the first protection mode according to an embodiment of the present invention;

[0035] Figure 3 This is a schematic diagram of the structure of the weighing and handling device provided in the embodiment of the present invention, showing the hidden lifting component inside the weighing mechanism in the first protection mode;

[0036] Figure 4 This is a schematic diagram of the weighing mechanism of the weighing and handling device provided in the embodiment of the present invention in the second protection mode.

[0037] Figure 5 This is a cross-sectional schematic diagram of the weighing mechanism of the weighing and handling device provided in the embodiment of the present invention in the first protection mode;

[0038] Figure 6 This is a cross-sectional schematic diagram of the hidden lifting component inside the weighing mechanism of the weighing and handling device provided in the first protection mode according to an embodiment of the present invention.

[0039] Figure 7 yes Figure 6 A magnified view of a section at point A in the middle;

[0040] Figure 8 yes Figure 3 A magnified view of a section at point B in the middle;

[0041] Figure 9 yes Figure 4 A magnified view of a section at point C;

[0042] Figure 10 This is a cross-sectional schematic diagram of the lifting assembly provided in an embodiment of the present invention;

[0043] Figure 11 This is a cross-sectional schematic diagram of the clamping mechanism provided in an embodiment of the present invention.

[0044] In the picture:

[0045] 1000. Weighing and handling device;

[0046] 100. Weighing mechanism; 110. Weighing sensor; 111. Deformation end; 120. Bearing component; 121. Extension portion; 130. Suspension component; 131. Mounting flange; 140. Positioning component; 141. First positioning part; 1411. First stop boss; 1412. Second stop boss; 1413. Third stop boss; 142. Second positioning part; 150. Lifting assembly; 151. First driving component; 152. First transmission structure; 1521 153. Bevel gear; 154. Second transmission structure; 155. Second lead screw; 156. Lifting component; 157. Guide pin; 158. Mounting base; 159. Guide hole; 100. Abutment component; 101. Second fixing post; 102. First circuit board; 163. Second circuit board; 174. Third circuit board; 185. First housing; 186. First limiting post; 187. Second limiting post; 188. First fixing post; 190. First wiring harness;

[0047] 200. Clamping mechanism; 210. Second driving component; 220. Third transmission structure; 221. First cylindrical gear; 222. Second cylindrical gear; 223. Third cylindrical gear; 230. Clamping structure; 231. Gripper; 232. First lead screw; 240. Second housing; 250. Fourth circuit board; 260. Fifth circuit board; 270. Second wiring harness; 280. Dust cover. Detailed Implementation

[0048] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0049] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0050] In the description of this invention, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0051] In workpiece processing production lines, handling devices are needed to clamp and fix workpieces and move them between various processing units. After processing at each unit, the workpiece needs to be weighed to verify its quality. Furthermore, a weighing check is required after each processing unit completes its processing. For this weighing check, the handling device transfers and fixes the workpiece, moving it to a weighing platform where its weight is measured. After weighing, the handling device re-clamps and moves the workpiece to the next processing unit for the next step. This method of weighing requires repeated clamping, increasing cycle time, being cumbersome, and reducing processing efficiency. A weighing gripper has been developed. A carrier component is fixed to the deformable end of the weighing sensor in the gripper, and the carrier component connects to the gripper, allowing for weighing of the workpiece during transfer. During workpiece transfer, the workpiece's acceleration and off-center loading can affect the accuracy of the weighing sensor and may even damage it. Furthermore, since the load-bearing component has a certain mass, during the transportation of the weighing gripper, various external forces drive the gripper and the load-bearing component to repeatedly bend the deformation end of the load cell. The number of bends at the deformation end of the load cell determines its service life. If the deformation end of the load cell is repeatedly bent during transportation, it will greatly reduce the service life of the weighing gripper.

[0052] To solve the above problems, such as Figures 1-4As shown, this embodiment provides a weighing and handling device 1000. The weighing and handling device 1000 includes a weighing mechanism 100 and a clamping mechanism 200. The clamping mechanism 200 can clamp and fix a workpiece. The weighing mechanism 100 includes a weighing sensor 110, a support member 120, a suspension member 130, a lifting structure, and a positioning member 140. The support member 120 is fixed to the deformable end 111 of the weighing sensor 110. The suspension member 130 can be suspended and fixed to the support member 120. The lifting structure can drive the suspension member 130 to move upward and separate from the support member 120. The suspension member 130 is fixedly connected to the clamping mechanism 200. The positioning member 140 can be fixedly connected to the support member 120 and the weighing sensor 110 or to the suspension member 140. The weighing and handling device 1000 has a first protection mode and a second protection mode. In the first protection mode, the load-bearing component 120 and the weighing sensor 110 are fixedly connected to the positioning component 140, and the suspension component 130 is separated from the load-bearing component 120. In the second protection mode, the weighing and handling device 1000 can switch between the first working state and the second working state. In the first working state, the suspension component 130 is fixedly connected to the positioning component 140 and is separated from the load-bearing component 120. In the second working state, the suspension component 130 is fixedly connected to the positioning component 140 and is suspended and fixed to the load-bearing component 120.

[0053] The weighing and handling device 1000 achieves workpiece clamping, fixing, and weighing by installing a weighing sensor 110 within the weighing mechanism 100, fixing a carrier 120 to the deformable end 111 of the weighing sensor 110, suspending a suspension member 130 that can be suspended and fixed to the carrier 120, and providing a lifting structure that can drive the suspension member 130 to move upward and separate from the carrier 120. The suspension member 130 is fixedly connected to a clamping mechanism 200 that can clamp and fix the workpiece. This, combined with the subsequent driving of the weighing mechanism, enables the clamping, fixing, and weighing of the workpiece. The 1000 is driven within space to weigh the workpiece during transfer. By setting a positioning element 140, the carrier 120 and the weighing sensor 110 are fixedly connected to the positioning element 140, and the suspension element 130 is separated from the carrier 120. This allows the weighing and handling device 1000 to be in a first protection mode. In the first protection mode, the carrier 120 is kept relatively fixed to the deformable end 111 of the weighing sensor 110 under the action of the positioning element 140, thus solving the problem of weighing and handling... During the transportation of device 1000, various external forces drive the load-bearing component 120 to repeatedly bend the deformation end 111 of the load cell 110. To improve the protection of the load cell 110 and thus extend the service life of the weighing and handling device 1000, the suspension component 130 is fixedly connected to the positioning component 140, and a lifting structure is used to drive the suspension component 130 upward to separate it from the load-bearing component 120. This allows the weighing and handling device 1000 to be in the first working state of the second protection mode. This invention enables the transfer of the gravity load of the suspension member 130, the clamping mechanism 200, and the workpiece clamped and fixed by the clamping mechanism 200 to the positioning member 140 during the process of transferring the workpiece without weighing it. At this time, the bearing member 120 does not bear the gravity load of the suspension member 130, the clamping mechanism 200, and the workpiece clamped and fixed by the clamping mechanism 200. This solves the problem of the acceleration and off-center load of the workpiece affecting the accuracy of the weighing sensor 110 and damaging the weighing sensor 110 during the transfer of the workpiece.By fixing the suspension member 130 to the positioning member 140 and preventing the lifting structure from driving the suspension member 130 to move upward, the suspension member 130 is suspended and fixed to the bearing member 120 under its own weight. This allows the weighing and handling device 1000 to be in the second working state of the second protection mode. During the process of weighing a workpiece, the weight of the suspension member 130, the positioning member 140, the clamping mechanism 200, and the workpiece clamped and fixed by the clamping mechanism 200 is transferred to the bearing member 120. Under the aforementioned load, the bearing member 120 bends the weighing sensor. The deformation end 111 of the weighing sensor 110 enables the weighing sensor 110 to detect the gravity of the suspension member 130, the positioning member 140, the clamping mechanism 200, and the workpiece clamped and fixed by the clamping mechanism 200. By utilizing the switching between the first and second working states of the weighing and handling device 1000 in the second protection mode, the workpiece is only connected to the deformation end 111 of the weighing sensor 110 when it is necessary to weigh the workpiece during actual operation. This further improves the protection of the weighing sensor 110 and extends the service life of the weighing and handling device 1000.

[0054] In this embodiment, the weighing mechanism 100 further includes a first housing 180, wherein the first housing 180 has a first receiving cavity, and the weighing sensor 110, the carrier 120, the suspension member 130 and the positioning member 140 are all located in the first receiving cavity. In the first protection mode, the weighing sensor 110 and the positioning member 140 are fixedly connected to the first housing 180, and the carrier 120 is fixedly connected to the positioning member 140. In the second protection mode, the weighing sensor 110 is fixedly connected to the first housing 180, the positioning member 140 is fixedly connected to the suspension member 130, and the positioning member 140 is movably disposed in the first receiving cavity within a preset range in the vertical direction. By setting a first housing 180 on the weighing mechanism 100, the weighing sensor 110, the carrier 120, the suspension member 130, and the positioning member 140 are all set in the first receiving cavity. In the first protection mode, the weighing sensor 110 and the positioning member 140 are fixedly connected to the first housing 180, and the carrier 120 is fixedly connected to the positioning member 140. This realizes the separation of the suspension member 130 from the carrier 120 and the fixed connection of the positioning member 140 to the weighing sensor 110. In the second protection mode, the weighing sensor 110 is fixedly connected to the first housing, and the positioning member 140 is fixedly connected to the suspension member 130. The positioning member 140 is movably set in the first receiving cavity within a preset range in the vertical direction. The fixed connection between the positioning member 140 and the suspension member 130 can drive the suspension member 130 to move in the preset range in the vertical direction, thereby allowing the suspension member 130 to switch between a first working state separated from the carrier 120 and a second working state suspended and fixed to the carrier 120.

[0055] It should be noted that when the weighing and handling device 1000 is in the first protection mode, the suspension member 130 is not separated from the carrier member 120 by the lifting structure. Instead, the suspension member 130 is fixedly connected to the first housing 180 by an additional locking structure to achieve separation. When the weighing and handling device 1000 switches from the first protection mode to the second protection mode, the aforementioned additional locking structure needs to be removed.

[0056] Understandably, the load cell 110 includes a load cell body and a deformation end 111, and the load cell body being subjected to force will not affect the deformation end 111. When the weighing and handling device 1000 is in the first protection mode, the load cell body and the positioning component 140 are respectively fixedly connected to the first housing 180, thereby realizing the indirect fixed connection between the load cell 110 and the positioning component 140.

[0057] In this embodiment, the weighing and handling device 1000 further includes a handling mechanism, which is connected to the weighing mechanism 100 and can drive the weighing mechanism 100 to move arbitrarily within space. By setting the handling mechanism to drive the weighing mechanism 100 and the clamping mechanism 200 fixedly connected to the suspension member 130 within the weighing mechanism 100 to move arbitrarily within space, the handling requirements for workpieces to move arbitrarily within space can be met. The specific structure and working principle of the handling mechanism are all prior art and will not be described in detail here. In addition, the handling mechanism and the weighing mechanism 100 are stored and transported separately during transportation to improve transportation convenience.

[0058] In addition, to improve the fixing effect between the suspension component 130 and the clamping mechanism 200, a mounting flange 131 is provided at the lower end of the suspension component 130, and the mounting flange 131 is fixedly connected to the upper end of the clamping mechanism 200.

[0059] Furthermore, in this embodiment, the clamping mechanism 200 and the mounting flange 131 are detachably fixed together by bolts. By using bolts to detachably fix the clamping mechanism 200 and the mounting flange 131 together, the clamping mechanism 200 and the weighing mechanism 100 can be stored and transported separately during the transportation of the weighing and handling device 1000, thereby further improving transportation convenience.

[0060] To further improve the weighing accuracy of the load cell 110, the center of gravity line of the mounting flange 131 coincides with the center of gravity line of the clamping mechanism 200. It should be noted that in this embodiment, the center of gravity lines of the deformed end 111 of the load cell 110, the mounting flange 131, and the clamping mechanism 200 coincide, ensuring that the deformed end 111 of the load cell 110 only bears a vertically downward load. This solves the problem of reduced detection accuracy of the load cell 110 caused by the offset of the center of gravity of the clamping mechanism 200 and the mounting flange 131 relative to the center of gravity of the deformed end 111.

[0061] Optionally, the mounting flange 131 has several first weight-reducing through holes extending vertically, which form a wiring channel. By having several first weight-reducing through holes extending vertically on the mounting flange 131 and using them to form a wiring channel, not only can the weight of the suspension component 130 be reduced, but also wiring space can be provided for the connecting wire harness between the clamping mechanism 200 and the weighing mechanism 100. It should be noted that in this embodiment, two first weight-reducing through holes are spaced apart on the mounting flange 131. In other embodiments, the specific number of first weight-reducing through holes on the mounting flange 131 can be adjusted according to actual needs; this embodiment does not impose a specific limitation.

[0062] As an optional solution, the weighing and handling device 1000 also includes a display mechanism, which is communicatively connected to the weighing sensor 110. The display mechanism is used to display the detection information of the weighing mechanism 100. The display mechanism and the weighing mechanism 100 are integrated together to observe the clamping effect of the clamping mechanism 200 on the workpiece and the weight information of the workpiece in real time at the work site. In other embodiments, the display mechanism and the weighing mechanism 100 can also be set separately to observe the weight information of the workpiece at a location far from the work site, thereby improving work safety. The specific structure and working principle of the display mechanism are all prior art and will not be described in detail here.

[0063] Understandably, in the first protection mode, the load cell 110 is completely inactive. In the second protection mode, the load cell 110 will operate in the second operating state. To further enhance the protection of the load cell 110 and prevent bending of the deformable end 111 inside the load cell 110 during transportation, such as... Figure 3 as well as Figures 5-8As shown, the positioning member 140 can switch between a first connection state and a second connection state. The positioning member 140 has a first positioning part 141 and a second positioning part 142. When the positioning member 140 is in the first connection state, the weighing and handling device 1000 is in a first protection mode, and the carrier member 120 is fixedly connected to the first positioning part 141. When the positioning member 140 is in the second connection state, the weighing and handling device 1000 is in the first working state of the second protection mode, and the suspension member 130 is fixedly connected to the second positioning part 142. It should be noted that in this embodiment, both the suspension member 130 and the carrier member 120 are disposed at one end of the positioning member 140 along the length direction, and the first positioning part 141 and the second positioning part 142 are respectively disposed at both ends of the positioning member 140 along the length direction. When it is necessary to switch the positioning member 140 from the first connection state to the second connection state, it is necessary to drive the positioning member 140 to rotate 180° around the horizontal axis.

[0064] Specifically, the first positioning part 141 has a first stop boss 1411 and a second stop boss 1412. The first stop boss 1411 can be fixedly connected to the side wall of the bearing member 120 in the horizontal direction; the second stop boss 1412 can be fixedly abutted against the upper end face of the bearing member 120 in the vertical direction; and the second positioning part 142 can be fixedly connected to the side wall of the suspension member 130 in the horizontal direction. By providing a first positioning part 141 and a second positioning part 142 on the positioning member 140, and by providing a first stop boss 1411 and a second stop boss 1412 on the first positioning part 141, the first stop boss 1411 abuts against and is fixed to the upper end face of the support member 120, which can achieve positioning and fixing of the support member 120 in the vertical direction. The second stop boss 1412 is fixedly connected to the side wall of the support member 120 in the horizontal direction, which can achieve positioning and fixing of the support member 120 in the horizontal direction, thus improving the positioning effect of the support member 120. By fixing the second positioning part 142 to the side wall of the suspension member 130 in the horizontal direction, the position of the suspension member 130 relative to the support member 120 can be adjusted in the vertical direction while the positioning member 140 and the suspension member 130 are positioned and fixed, thus meeting the position adjustment requirements of the suspension member 130 and the support member 120 in the vertical direction.

[0065] It should be noted that, in this embodiment, as Figure 7 As shown, the support member 120 has an extension 121 that extends out of the horizontal sidewall of the deformed end 111 in the horizontal direction, and the first stop boss 1411 abuts and is fixed to the upper end face of the extension 121.

[0066] In addition, such as Figure 4 and Figure 9As shown, the first positioning part 141 also has a third stop boss 1413. The first housing 180 of the weighing mechanism 100 includes a first fixing post 183, a first limiting post 181 and a second limiting post 182. In the first protection mode, the first fixing post 183 can drive the suspension member 130 to move upward in the vertical direction relative to the bearing member 120, and the third stop boss 1413 can abut and fix with the upper end face of the suspension member 130. In the second protection mode, the positioning member 140 can stop and fix upward with the first limiting post 181 and the second limiting post 182 respectively. By additionally providing a third stop boss 1413 in the first positioning part 141, the third stop boss 1413 can abut and fix with the upper end face of the suspension member 130 in the first protection mode. This achieves the effect of positioning and fixing the bearing member 120 in the first positioning part 141, and cooperating with the first fixing post 183 to position and fix the suspension member 130. It also achieves the effect of limiting the upward movement of the positioning member 140 to the extreme position in the second protection mode by cooperating with the first limiting post 181 and the second limiting post 182.

[0067] It should be noted that in this embodiment, the first fixing post 183 is a bolt. The bolt shank passes through the top of the first housing 180 from top to bottom and is threadedly fixed to the suspension member 130. The bolt nut cannot pass through the top of the housing. By tightening the bolt shank, the suspension member 130 can move upward under the drive of the thread and abut against and fix to the third stop boss 1413.

[0068] In this embodiment, as Figure 3 and Figure 4 As shown, in the second protection mode, the suspension member 130 and the positioning member 140 are fixed together, and the suspension member 130 is fixed to the second limiting post 182 with an upward stop, that is, the positioning member 140 is fixed to the second limiting post 182 with an upward stop. Moreover, the first limiting post 181 and the second limiting post 182 are respectively set at opposite ends of the positioning member 140. When the positioning member 140 is fixed with an upward stop, the positioning member 140 can be fixed in a horizontal state by the upward stop, which solves the problem of the positioning member 140 tilting when it is fixed with an upward stop.

[0069] Furthermore, in this embodiment, the deformation end 111 of the weighing sensor 110 is located between the first limiting post 181 and the second limiting post 182, so as to further improve the protection of the deformation end 111 of the weighing sensor 110.

[0070] In one of the alternative solutions, such as Figure 2As shown, the weighing and handling device 1000 also includes a lifting assembly 150, which is the aforementioned lifting structure. The lifting assembly 150 is installed in the first receiving cavity of the first housing 180. The output end of the lifting assembly 150 can drive the positioning member 140 and the suspension member 130 fixedly connected to the positioning member 140 to move upward in the vertical direction within a preset range. By setting the lifting assembly 150 to drive the positioning member 140 and the suspension member 130 fixedly connected to the positioning member 140 to move in the vertical direction, stable support can be provided for the positioning member 140. In the first working state of the second protection mode of the weighing and handling device 1000, the lifting assembly 150 bears the gravity load of the suspension member 130, the clamping mechanism 200 and the workpiece clamped and fixed by the clamping mechanism 200, and drives the suspension member 130, the clamping mechanism 200 and the workpiece clamped and fixed by the clamping mechanism 200 to move upward.

[0071] Combination Figure 10 The specific structure of the lifting assembly 150 is described below. The lifting assembly 150 includes a first driving member 151, a first transmission module, and a contact member 155. The first driving member 151 is installed in a first receiving cavity. The input end of the first transmission module is connected to the output end of the first driving member 151. The output end of the first transmission module is located below the positioning member 140 and can move vertically. The contact member 155 is fixed to the output end of the first transmission module and is configured to abut against the positioning member 140. By installing the first driving member 151 in the first receiving cavity, the input end of the first transmission module is connected to the output end of the first driving member 151, and the output end of the first transmission module is connected to the abutment member 155. The output end of the first transmission module is positioned below the positioning member 140. The abutment member 155 is driven to move vertically by the first transmission module. When the abutment member 155 moves upward, it abuts against the positioning member 140 and drives the positioning member 140 to move upward. When the first transmission module drives the abutment member 155 to move upward, the positioning member 140 moves downward synchronously with the abutment member 155 under its own gravity.

[0072] It should be noted that in this embodiment, the first driving member 151 is a rotary motor, and the first transmission module is used to change the transmission direction of the first driving member 151 so that the abutment member 155 can move in the vertical direction.

[0073] Specifically, the first drive member 151 has an output shaft that rotates about a horizontal axis. The first transmission module includes a first transmission structure 152 and a second transmission structure 153. The first transmission structure 152 includes two meshing bevel gears 1521. The second transmission structure 153 includes a second lead screw 1531 and a lifting member 1532. Either of the two bevel gears 1521 is coaxially fixed to the output end of the first drive member 151. The other of the two bevel gears 1521 is fixed to the second lead screw 1531. The second lead screw 1531 extends in the vertical direction. The lifting member 1532 is sleeved on the axial outer periphery of the second lead screw 1531 and threadedly engaged with the second lead screw 1531. The abutment member 155 is fixed on the lifting member 1532 to convert the output power of the first drive member 151 rotating about a horizontal axis into the output power extending in the vertical direction, thereby improving the space utilization rate of the first accommodating space inside the first housing 180.

[0074] To ensure stable vertical driving of the lifting member 1532 by the second lead screw 1531, the lifting member 1532 has a guide pin 15231 extending vertically. The mounting base 154 has a guide hole 1541, and the guide pin 15231 slides in the guide hole 1541. When the lifting member 1532 moves vertically, the guide pin 15231 slides in the guide hole 1541 to prevent the second lead screw 1531 from driving the lifting member 1532 to rotate synchronously, thus ensuring that the second lead screw 1531 can normally drive the lifting member 1532 to move vertically.

[0075] In addition, in this embodiment, the lifting assembly 150 also includes a mounting base 154 and a second fixing column 156. The second fixing column 156 is fixedly connected to the mounting base 154 and the first housing 180 respectively. The mounting base 154 is used to install the first driving component 151.

[0076] As an optional solution, the lifting assembly 150 also includes a first circuit board 157, which is communicatively connected to the first drive component 151. The weighing mechanism 100 also includes a second circuit board 160, a third circuit board 170, and a first wiring harness 190. The second circuit board 160 is communicatively connected to the load cell 110. The first circuit board 157 and the second circuit board 160 are respectively communicatively connected to the third circuit board 170 through the first wiring harness 190. The third circuit board 170 is communicatively connected to the control mechanism to improve the ease of operation of the weighing mechanism 100. The communication connection principle of the first circuit board 157, the second circuit board 160, the third circuit board 170, and the control mechanism is prior art and will not be described in detail here.

[0077] Combination Figure 11The specific structure of the clamping mechanism 200 is described below. The clamping mechanism 200 includes a second housing 240, a second drive member 210, a second transmission module, and a clamping structure 230. The second housing 240 is fixedly connected to the mounting flange 131 of the suspension member 130. The second drive member 210 is installed inside the second housing 240. The second transmission module is installed inside the second housing 240, and its input end is connected to the output end of the second drive member 210. The clamping structure 230 is installed inside the second housing 240 and has two opposing grippers 231 located outside the second housing 240. The output end of the second transmission module is connected to the input end of the clamping structure 230, and the second transmission module can drive the two grippers 231 to move towards each other or away from each other. By setting the second drive unit 210, the second transmission module, and part of the clamping structure 230 inside the second housing 240, and fixing the second housing 240 to the mounting flange 131 of the suspension member 130, the suspension member 130 can be fixedly connected to the clamping mechanism 200. By connecting the input end of the second transmission module to the output end of the second drive unit 210, and connecting the output end of the second transmission module to the input end of the clamping structure 230, the second transmission module drives the two jaws 231 located outside the second housing 240 in the clamping mechanism 200 to move towards each other or away from each other, thus achieving the effect of the two jaws 231 jointly clamping and fixing the workpiece or releasing the workpiece.

[0078] It should be noted that in this embodiment, the second driving member 210 is a rotary motor with an output shaft that rotates around a horizontal axis. The second transmission module includes a third transmission structure 220, which includes a first cylindrical gear 221, a second cylindrical gear 222, and a third cylindrical gear 223 that mesh in sequence. The first cylindrical gear 221 is coaxially fixed with the output shaft of the second driving member 210. The second cylindrical gear 222 and the third cylindrical gear 223 are both rotatably mounted in the second housing 240. The third cylindrical gear 223 is connected to the input end of the clamping structure 230, thereby driving the two grippers 231 in the clamping structure 230 to move towards each other or away from each other, thereby improving the space utilization rate in the second housing 240.

[0079] In addition, the clamping structure 230 also has a first lead screw 232, which is located inside the second housing 240 and extends horizontally. The first lead screw 232 is coaxially fixed with the third cylindrical gear 223. The second transmission module can drive the first lead screw 232 to rotate around the axial direction of the first lead screw 232. Either of the two jaws 231 is provided with a threaded through hole, and the other of the two is provided with a through hole. The jaw 231 with the threaded through hole is slidably engaged with the second housing 240 along the axial direction of the first lead screw 232, and the jaw 231 with the through hole is fixedly connected to the second housing 240. The first lead screw 232 passes through the threaded through hole and the through hole in sequence. The inner wall of the threaded through hole has an internal thread, which engages with the external thread of the first lead screw 232. The inner wall of the through hole does not have an internal thread. By providing a first lead screw 232 extending horizontally within the second housing 240, and providing a threaded through hole in either of the two jaws 231, and a through hole in the other jaw 231, the inner wall of the threaded through hole has an internal thread that engages with the external thread of the first lead screw 232, while the inner wall of the through hole does not have an internal thread that engages with the external thread of the first lead screw 232. When the first lead screw 232 rotates around its own axis, the jaw 231 with the threaded through hole will move along the axis of the first lead screw 232 under the drive of the thread, while the position of the jaw 231 with the through hole remains unchanged, thereby achieving the effect of the two jaws 231 moving towards each other or away from each other.

[0080] It should be noted that the second housing 240 has an opening extending axially along the first lead screw 232, so that the gripper 231 with a threaded through hole can slide and engage with the second housing 240 along the axial direction of the first lead screw 232. To improve the protection of the second drive member 210 and the third transmission structure 220 inside the second housing 240, the clamping mechanism 200 includes a dust cover 280, which is telescopic. The gripper 231 with a through hole is located at one end of the opening along the axial direction of the first lead screw 232, and the dust cover 280 is located between the two grippers 231. Furthermore, the dust cover 280 is located between the gripper 231 with the threaded through hole and the other end of the opening along the axial direction of the first lead screw 232, so as to improve the sealing effect of the opening by utilizing the telescopic characteristics of the dust cover 280.

[0081] In addition, the gripper 231 is provided with an oil injection hole to facilitate lubrication of the first lead screw 232 and the gripper 231.

[0082] Optionally, the clamping mechanism 200 further includes a fourth circuit board 250, a fifth circuit board 260, and a second wiring harness 270. The fourth circuit board 250 is communicatively connected to the second drive unit 210, the fifth circuit board 260 is communicatively connected to the fourth circuit board 250 via the second wiring harness 270, and the fifth circuit board 260 is communicatively connected to the control mechanism to improve the ease of operation of the clamping mechanism 200. The communication connection principle of the fourth circuit board 250, the fifth circuit board 260, and the control mechanism is prior art and will not be described in detail here.

[0083] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A load handling device, characterized in that The utility model relates to a kind of weighing and carrying device, including: Clamping mechanism (200), the clamping mechanism (200) can clamp fixed workpiece; Weighing mechanism (100), the weighing mechanism (100) includes load cell (110), carrier (120), suspension (130), jacking structure and positioning piece (140), the carrier (120) is fixed in the deformation end (111) of load cell (110), the suspension (130) can be suspended with the carrier (120) fixed, the jacking structure can drive the suspension (130) upward and separate with the carrier (120), the suspension (130) is fixedly connected with the clamping mechanism (200), the positioning piece (140) can be fixedly connected with the carrier (120) and load cell (110) or with the suspension (130) fixedly connected; The weighing and carrying device has a first protection mode and a second protection mode, in the first protection mode, the carrier (120) and the load cell (110) are fixedly connected with the positioning piece (140) respectively, the suspension (130) is separated from the carrier (120); In the second protection mode, the weighing and carrying device can be switched between a first working state and a second working state, in the first working state, the suspension (130) is fixedly connected with the positioning piece (140), the suspension (130) is separated from the carrier (120), in the second working state, the suspension (130) is fixedly connected with the positioning piece (140), the suspension (130) is suspended with the carrier (120).

2. The load handling device of claim 1, wherein, The positioning piece (140) can be switched between a first connection state and a second connection state, the positioning piece (140) has a first positioning part (141) and a second positioning part (142), in the first connection state of the positioning piece (140), the weighing and carrying device is in the first protection mode, the carrier (120) is fixedly connected with the first positioning part (141); In the second connection state of the positioning piece (140), the weighing and carrying device is in the first working state of the second protection mode, the suspension (130) is fixedly connected with the second positioning part (142).

3. The load handling device of claim 2, wherein, The first positioning part (141) has a first stop boss (1411) and a second stop boss (1412), the first stop boss (1411) can be fixedly connected with the side wall of the carrier (120) along the horizontal direction, the second stop boss (1412) can be fixedly connected with the upper end surface of the carrier (120) along the vertical direction; The second positioning part (142) can be fixedly connected with the side wall of the suspension (130) along the horizontal direction.

4. The load handling device of claim 3, wherein, The first positioning part (141) further has a third stop boss (1413), and the weighing and carrying device further comprises a first fixing column (183), a first limiting column (181) and a second limiting column (182). In the first protection mode, the first fixing column (183) can drive the suspension piece (130) to move upwards relative to the bearing piece (120) along the vertical direction, and the third stop boss (1413) can abut against and fix the upper end surface of the suspension piece (130). In the second protection mode, the positioning piece (140) can be upwardly stopped and fixed with the first limiting column (181) and the second limiting column (182) respectively.

5. Weighing and carrying device according to any of claims 1-4, characterized in that, The weighing and carrying device further comprises: A jacking assembly (150), which is the jacking structure. The jacking assembly (150) comprises a first driving piece (151), a first transmission module and an abutting piece (155). The input end of the first transmission module is connected with the output end of the first driving piece (151), the output end of the first transmission module is located below the positioning piece (140), the output end of the first transmission module can move along the vertical direction, and the abutting piece (155) is fixed on the output end of the first transmission module and is configured to abut against the positioning piece (140).

6. Weighing and carrying device according to any of claims 1-4, characterized in that, The weighing mechanism (100) further comprises: A first machine shell (180) having a first accommodating cavity. The weighing sensor (110), the bearing piece (120), the suspension piece (130) and the positioning piece (140) are located in the first accommodating cavity. In the first protection mode, the weighing sensor (110) and the positioning piece (140) are fixedly connected with the first machine shell (180), and the bearing piece (120) is fixedly connected with the positioning piece (140). In the second protection mode, the weighing sensor (110) is fixedly connected with the first machine shell (180), the positioning piece (140) is fixedly connected with the suspension piece (130), and the positioning piece (140) is movably arranged in the first accommodating cavity within a preset range along the vertical direction.

7. Weighing and carrying device according to any of claims 1-4, characterized in that, The lower end of the suspension piece (130) is provided with a mounting flange (131), and the mounting flange (131) is fixedly connected with the upper end of the clamping mechanism (200).

8. Weighing and carrying device according to claim 7, characterized in that The center of gravity of the mounting flange (131) coincides with the center of gravity of the clamping mechanism (200). And / or, a plurality of first weight-reducing through holes extending along the vertical direction are formed in the mounting flange (131), and the first weight-reducing through holes constitute a wiring channel.

9. Weighing and carrying device according to any of claims 1-4, characterized in that, The weighing and carrying device further comprises: A display mechanism, which is in communication connection with the weighing sensor (110) and is used to display the detection information of the weighing mechanism (100). The display mechanism is integrated with the weighing mechanism (100), or the display mechanism is separately arranged from the weighing mechanism (100).

10. Weighing and carrying device according to any of claims 1-4, characterized in that, The weighing and carrying device further comprises: A carrying mechanism is connected with the weighing mechanism (100), and the carrying mechanism can drive the weighing mechanism (100) to move anywhere in space.

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