Weighing mechanism and weighing and carrying device

Abstract

The utility model relates to weight detection equipment technical field especially, and it is a weighing mechanism and weighing handling device, the weighing mechanism in this weighing handling device includes weighing sensor, bearing piece, suspension piece and jacking assembly, and bearing piece is fixed in the deformation end of weighing sensor, and suspension piece is fixedly connected with work piece, and suspension piece can be hung fixed with bearing piece, and the output end of jacking assembly is located below suspension piece, and the output end of jacking assembly can move upwards and drive suspension piece to move upwards, to make suspension piece switch between the first working state of hanging fixed with bearing piece and the second state of being placed on the output end of jacking assembly, when needing to weigh work piece, make suspension piece hang on bearing piece, when not needing to weigh work piece, drive suspension piece to separate from bearing piece and be placed on the output end of jacking assembly by jacking assembly, improve the protection of weighing sensor.

Description

Technical Field

[0001] This utility model relates to the field of weight detection equipment technology, and in particular to weighing mechanisms and weighing and handling devices. 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 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 deformable 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.

[0004] Therefore, there is an urgent need to invent weighing mechanisms and weighing and handling devices to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a weighing mechanism and a weighing and handling device, so that the load of the workpiece can be selectively transferred to the bending part of the weighing sensor during actual work, thereby improving the protection of the weighing sensor and extending its service life.

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

[0007] The weighing mechanism includes a load cell, a support member, a suspension member, and a lifting assembly. The support member is fixed to the deformable end of the load cell. The suspension member is fixedly connected to the clamping mechanism and can be suspended and fixed to the support member. The output end of the lifting assembly is located below the suspension member. The output end of the lifting assembly can move upward and drive the suspension member to move upward, so that the suspension member switches between a first working state of being suspended and fixed to the support member and a second state of being placed on the output end of the lifting assembly.

[0008] As an optional solution, the lifting assembly includes:

[0009] A first driving member, the first driving member having a power transmission shaft that rotates about a horizontal axis;

[0010] The first transmission module has its input end connected to the power transmission shaft;

[0011] An abutment is disposed below the suspension member, the abutment being able to abut against the suspension member, the abutment being connected to the output end of the first transmission module, the first transmission module being configured to change the power transmission direction of the first driving member, and the first transmission module being able to drive the abutment to move in the vertical direction.

[0012] As an optional solution, the first transmission module includes:

[0013] A first transmission structure, comprising two meshing bevel gears, one of which is coaxially fixed to the power transmission shaft; and

[0014] The second transmission structure includes a first lead screw and a lifting seat with threaded engagement. The first lead screw extends along the vertical direction and is coaxially fixed with the other of the two bevel gears. The lifting seat is sleeved on the axial outer circumference of the first lead screw and threadedly engaged with the first lead screw. The abutment is fixed above the lifting seat.

[0015] As an optional solution, the lifting assembly further includes:

[0016] The base has a first driving member mounted on it. The lifting seat has a limiting pin extending along the vertical direction. The base has a guide hole, and the limiting pin and the guide hole slide in cooperation along the vertical direction.

[0017] As an optional solution, the lifting assembly further includes:

[0018] A guide post is fixed on the base and extends along the vertical direction. The suspension member has a mating notch extending along the vertical direction, and the guide post and the mating notch slide together along the vertical direction.

[0019] As an optional solution, the weighing mechanism further includes:

[0020] A first housing has a first receiving cavity for accommodating the weighing sensor, the carrier, the suspension member, and the lifting assembly. A downwardly extending limiting post is provided at the top of the first receiving cavity, and the suspension member can be fixed upwardly with the limiting post.

[0021] As an optional solution, the upper end face of the suspension member is provided with a suspension groove, which extends through the suspension member in a horizontal direction. The suspension groove includes a limiting part and a receiving part connected sequentially from top to bottom. The width of the limiting part in the horizontal direction is smaller than the width of the receiving part in the horizontal direction. The receiving part is used to receive the carrier member, and the position of the carrier member in the receiving part is adjustable in the vertical direction.

[0022] A weighing and handling device includes a clamping mechanism and a weighing mechanism as described above, wherein the clamping mechanism is capable of clamping and fixing the workpiece;

[0023] 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.

[0024] Alternatively, the center line of the mounting flange may coincide with the center line of the clamping mechanism.

[0025] And / or, the mounting flange (131) 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.

[0026] As an optional solution, the weighing and handling device further includes:

[0027] 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.

[0028] The beneficial effects of this utility model are:

[0029] The weighing mechanism provided by this utility model fixes a carrier to the deformation end of the weighing sensor and fixes the workpiece to the suspension component. By suspending and fixing the suspension component to the carrier, the gravitational load of the suspension component and the workpiece can be transferred to the deformation end of the weighing sensor, thereby realizing the weight detection of the workpiece. By setting a lifting component, the output end of the lifting component is located below the suspension component. The upward movement of the lifting component's output end drives the suspension component to move upward, allowing the suspension component to switch between a first working state of being suspended and fixed to the carrier and a second state of resting on the output end of the lifting component. This allows the carrier to selectively bear the gravitational load of the suspension component and the workpiece. When weighing the workpiece is required, the suspension component is suspended on the carrier to transfer the load of the suspension component and the workpiece to the deformation end of the weighing sensor. When weighing is not required, the lifting component drives the suspension component to detach from the carrier and rest on the output end of the lifting component, and the load of the suspension component and the workpiece is transferred to the output end of the lifting component. The deformation end of the weighing sensor does not bear the load, improving the protection of the weighing sensor and extending the service life of the weighing and handling mechanism.

[0030] This utility model also provides a weighing and handling device. By applying the above-mentioned weighing mechanism, the weight of the workpiece can be detected during the handling process. Moreover, in actual operation, the load of the workpiece can be selectively transferred to the bending part of the weighing sensor, thereby improving the protection of the weighing sensor and extending its service life. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the weighing and handling device provided in this embodiment of the utility model;

[0032] Figure 2 This is a structural schematic diagram of the weighing mechanism provided in an embodiment of the present invention;

[0033] Figure 3 This is a cross-sectional schematic diagram of the weighing mechanism provided in an embodiment of the present utility model;

[0034] Figure 4 This is a cross-sectional schematic diagram of the weighing mechanism in the state of concealing the lifting component, as provided in an embodiment of this utility model.

[0035] Figure 5 This is a cross-sectional schematic diagram of the lifting assembly provided in an embodiment of this utility model;

[0036] Figure 6 yes Figure 2 A magnified view of a section at point A in the middle;

[0037] Figure 7 This is a cross-sectional schematic diagram of the suspension component and the load-bearing component provided in an embodiment of this utility model;

[0038] Figure 8 This is a schematic diagram of the clamping mechanism provided in an embodiment of the present invention.

[0039] In the picture:

[0040] 1000. Weighing and handling device;

[0041] 100. Weighing mechanism; 110. Weighing sensor; 111. Deformation end; 120. Bearing component; 130. Suspension component; 131. Mounting flange; 132. Suspension groove; 1321. Limiting part; 1322. Receiving part; 133. Second weight reduction through hole; 134. Extension plate; 1341. Mating notch; 140. Lifting assembly; 141. Abutting part; 142. First driving component; 143. First transmission structure Structure; 1431, bevel gear; 144, second transmission structure; 1441, first lead screw; 1442, lifting seat; 14421, limiting pin; 145, guide post; 146, base; 1461, guide hole; 147, first circuit board; 150, second circuit board; 160, third circuit board; 170, first housing; 171, first limiting post; 172, second limiting post; 180, first wiring harness;

[0042] 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. Second lead screw; 240. Second housing; 250. Fourth circuit board; 260. Fifth circuit board; 270. Second wiring harness; 280. Dust cover. Detailed Implementation

[0043] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar parts or parts having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0044] In the description of this utility model, 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 utility model according to the specific circumstances.

[0045] In the description of this utility model, 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 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 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.

[0046] like Figure 1 and Figure 2 As shown, this embodiment provides a weighing and handling device 1000. The weighing and handling device 1000 includes a clamping mechanism 200 and a weighing mechanism 100. The weighing mechanism 100 has a weighing sensor 110. The clamping mechanism 200 is fixed to the deformable end 111 of the weighing sensor 110 within the weighing mechanism 100. The clamping mechanism 200 can clamp and fix the workpiece so as to realize the weighing of the workpiece during the process of transferring the workpiece after clamping it.

[0047] During the transfer of workpieces in existing weighing and handling devices, the acceleration and off-center loading of the workpieces can affect the accuracy of the weighing sensors and may even damage them.

[0048] To solve the above problems, such as Figures 2-4 As shown, this embodiment provides a weighing mechanism 100. The weighing mechanism 100 includes a weighing sensor 110, a support member 120, a suspension member 130, and a lifting assembly 140. The support member 120 is fixed to the deformable end 111 of the weighing sensor 110. The suspension member 130 is fixedly connected to the clamping mechanism 200 and can be suspended and fixed to the support member 120. The output end of the lifting assembly 140 is located below the suspension member 130. The output end of the lifting assembly 140 can move upward and drive the suspension member 130 to move upward, so that the suspension member 130 switches between a first working state of being suspended and fixed to the support member 120 and a second state of being placed on the output end of the lifting assembly 140.

[0049] The weighing mechanism 100 fixes a carrier 120 to the deformation end 111 of the weighing sensor 110 and fixes a clamping mechanism 200 for clamping and fixing a workpiece to a suspension member 130. By suspending and fixing the suspension member 130 to the carrier 120, the gravity load of the suspension member 130, the clamping mechanism 200, and the workpiece clamped by the clamping mechanism 200 can be transferred to the deformation end 111 of the weighing sensor 110, thereby realizing the weight detection of the workpiece. By setting a lifting assembly 140, with the output end of the lifting assembly 140 located below the suspension member 130, and by moving the output end of the lifting assembly 140 upward and driving the suspension member 130 upward, the suspension member 130 can be in a first working state of being suspended and fixed to the carrier 120 and in a second state of being placed on the output end of the lifting assembly 140. The system allows the carrier 120 to selectively bear the weight of the suspension 130, the clamping mechanism 200, and the clamped workpiece. When weighing the workpiece is required, the suspension 130 is suspended on the carrier 120 to transfer the load of the suspension 130, the clamping mechanism 200, and the clamped workpiece to the deformation end 111 of the load cell 110. When weighing is not required, the lifting assembly 140 drives the suspension 130 to detach from the carrier 120 and place it on the output end of the lifting assembly 140. The load of the suspension 130, the clamping mechanism 200, and the clamped workpiece is transferred to the output end of the lifting assembly 140, and the deformation end 111 of the load cell 110 does not bear the load, thus improving the protection of the load cell 110 and extending the service life of the weighing and handling device 1000.

[0050] like Figure 2 As shown, the weighing mechanism 100 also includes a first housing 170. The first housing 170 has a first receiving cavity for accommodating the load cell 110, the carrier 120, the suspension member 130, and the lifting assembly 140. A downwardly extending limiting post is provided at the top of the first receiving cavity, and the suspension member 130 can be fixed upward with the limiting post. By accommodating the load cell 110, the carrier 120, the suspension member 130, and the lifting assembly 140 within the first receiving cavity of the first housing 170, the protection of the load cell 110, the carrier 120, the suspension member 130, and the lifting assembly 140 can be improved. By providing a downwardly extending limiting post at the top of the first receiving cavity, the suspension member 130 can be fixed upward with the limiting post, limiting the extreme position of the upward movement of the suspension member 130 and ensuring the normal operation of the suspension member 130.

[0051] It should be noted that, in this embodiment, the suspension member 130 has an extension plate 134 extending outward in a horizontal direction. The extension plate 134 is located above the abutment member 141 and can abut against the abutment member 141. Furthermore, the limiting posts include a first limiting post 171 and a second limiting post 172. The extension plate 134 can be fixed upwards with the first limiting post 171, and the suspension member 130 can be fixed upwards with the second limiting post 172. This ensures that the suspension member 130 is fixed horizontally when it is fixed upwards, thus solving the problem of the suspension member 130 tilting when fixed upwards. In addition, in this embodiment, the deformation end 111 of the weighing sensor 110 is located between the first limiting post 171 and the second limiting post 172, further improving the protection of the deformation end 111 of the weighing sensor 110.

[0052] 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, which is fixedly connected to the suspension member 130 within the weighing mechanism 100, to move arbitrarily within space, the handling requirements for the arbitrary movement of workpieces 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. Furthermore, to improve the fixing effect of the suspension member 130 and the clamping mechanism 200, the suspension member 130 is provided with a mounting flange 131, which is fixedly connected to the clamping mechanism 200.

[0053] 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.

[0054] To improve the space utilization of the first accommodating cavity, the lifting assembly 140 includes a first driving member 142, a first transmission module, and a contact member 141. The first driving member 142 has a power transmission shaft that rotates around a horizontal axis. The input end of the first transmission module is connected to the power transmission shaft. The contact member 141 is disposed below the suspension member 130 and can abut against the suspension member 130. The contact member 141 is connected to the output end of the first transmission module. The first transmission module is configured to change the power transmission direction of the first driving member 142 and can drive the contact member 141 to move in the vertical direction. By configuring a first driving member 142, which has a power output shaft that rotates around a horizontal axis, the input end of the first transmission module is connected to the power transmission shaft, and the output end of the first transmission module is connected to the abutment member 141. The first transmission module changes the power transmission direction of the first driving member 142, causing it to drive the abutment member 141, located below the suspension member 130, to move vertically. This not only achieves the effect of the abutment member 141 moving upward to abut against the suspension member 130 and driving the suspension member 130 to move upward, but also allows for the rational arrangement of the position of the first driving member 142 within the first receiving cavity, thereby improving the space utilization of the first receiving cavity. It should be noted that in this embodiment, the first driving member 142 is a rotary electric motor. Rotary electric motors are responsive and have stable output power.

[0055] Combination Figure 5The specific structure of the first transmission module is described below. The first transmission module includes a first transmission structure 143 and a second transmission structure 144. The first transmission structure 143 includes two meshing bevel gears 1431, one of which is coaxially fixed with the power transmission shaft. The second transmission structure 144 includes a threaded first lead screw 1441 and a lifting seat 1442. The first lead screw 1441 extends vertically and is coaxially fixed with the other of the two bevel gears 1431. The lifting seat 1442 is sleeved on the axial outer periphery of the first lead screw 1441 and threadedly engaged with the first lead screw 1441. The abutment 141 is fixed above the lifting seat 1442. By splitting the first transmission module into a first transmission structure 143 and a second transmission structure 144 connected to each other, the first transmission structure 143 includes two meshing bevel gears 1431. By fixing one of the two bevel gears 1431 coaxially with the power output shaft of the first drive member 142, the other bevel gear 1431 can rotate around the vertical axis. By making the second transmission structure 144 include a threaded first lead screw 1441 and a lifting seat 1442, the first lead screw 1441 extends vertically and is coaxially fixed with the bevel gear 1431 that rotates around the vertical axis, the first lead screw 1441 can be driven to rotate along the vertical axis, thereby driving the lifting seat 1442 to move vertically, thus achieving the purpose of driving the abutment member 141 installed on the lifting seat 1442 to move vertically.

[0056] To enable the first lead screw 1441 to linearly drive the lifting seat 1442 in the vertical direction, the lifting assembly 140 also includes a base 146. The base 146 is fixed within the first receiving cavity, and the first driving member 142 is mounted on the base 146. The lifting seat 1442 has a limiting pin 14421 extending in the vertical direction, and the base 146 has a guide hole 1461. The limiting pin 14421 and the guide hole 1461 slide in the vertical direction. By providing a guide hole 1461 on the base 146 and a limiting pin 14421 extending in the vertical direction on the lifting seat 1442, the sliding engagement between the limiting pin 14421 and the guide hole 1461 in the vertical direction solves the problem of the first lead screw 1441 driving the lifting seat 1442 to rotate around the vertical axis, thereby enabling the first lead screw 1441 to drive the lifting seat 1442 to move in the vertical direction.

[0057] In addition, such as Figure 2 and Figure 6As shown, the lifting assembly 140 also includes a guide post 145, which is fixed to the base 146 and extends vertically. The outer plate 134 of the suspension member 130 has a mating notch 1341 extending vertically, and the guide post 145 slides in contact with the mating notch 1341 in the vertical direction. By providing a guide post 145 extending vertically in the lifting assembly 140, and allowing the guide post 145 to slide in contact with the mating notch 1341 of the outer and inner plates 134 of the suspension member 130 in the vertical direction, guidance can be provided for the movement of the outer plate 134 in the vertical direction, thereby improving the movement accuracy of the suspension member 130.

[0058] It should be noted that, in this embodiment, the lifting assembly 140 has four guide posts 145, which are spaced apart on the base 146. Each guide post 145 slides vertically with a mating notch 1341 to further improve the guiding effect on the suspension component 130. In other embodiments, the number of guide posts 145 and mating notches 1341 can be adjusted arbitrarily according to actual needs; this embodiment does not impose specific limitations.

[0059] As an optional solution, the lifting assembly 140 also includes a first circuit board 147, which is communicatively connected to the first drive component 142. The weighing mechanism 100 also includes a second circuit board 150, a third circuit board 160, and a first wiring harness 180. The second circuit board 150 is communicatively connected to the load cell 110. The first circuit board 147 and the second circuit board 150 are respectively communicatively connected to the third circuit board 160 via the first wiring harness 180. The third circuit board 160 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 147, the second circuit board 150, the third circuit board 160, and the control mechanism is prior art and will not be described in detail here.

[0060] Optionally, such as Figure 7As shown, a suspension groove 132 is provided on the upper end surface of the suspension member 130. The suspension groove 132 extends through the suspension member 130 in the horizontal direction. The suspension groove 132 includes a limiting part 1321 and a receiving part 1322 connected sequentially from top to bottom. The width of the limiting part 1321 in the horizontal direction is smaller than the width of the receiving part 1322 in the horizontal direction. The receiving part 1322 is used to receive the carrier member 120. The position of the carrier member 120 in the receiving part 1322 is adjustable in the vertical direction. By opening a suspension groove 132 on the upper end face of the suspension member 130, the suspension groove 132 passes through the suspension member 130 in the horizontal direction, and the suspension groove 132 is divided into a limiting part 1321 and a receiving part 1322 connected from top to bottom. The width of the limiting part 1321 in the horizontal direction is smaller than the width of the receiving part 1322 in the horizontal direction. The receiving part 1322 is used to accommodate the carrier member 120, and the position of the carrier member 120 in the receiving part 1322 is adjustable in the vertical direction. When the suspension member 130 and the carrier member 120 are suspended and fixed, the upper end face of the carrier member 120 abuts against the stepped end face between the receiving part 1322 and the limiting part 1321. When the suspension member 130 and the carrier member 120 are separated, the upper end face of the carrier member 120 separates from the stepped end face between the receiving part 1322 and the limiting part 1321.

[0061] 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.

[0062] 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.

[0063] 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.

[0064] 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.

[0065] In addition, the suspension component 130 also has a second weight-reducing through hole 133 to further reduce the weight of the suspension component 130 itself.

[0066] Combination Figure 8 The 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 mechanism 200 inside the second housing 240, and fixing the second housing 240 to the mounting flange 131 of the suspension unit 130, the suspension unit 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.

[0067] 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.

[0068] In addition, the clamping structure 230 also has a second lead screw 232, which is located inside the second housing 240 and extends horizontally. The second lead screw 232 is coaxially fixed with the third cylindrical gear 223. The second transmission module can drive the second lead screw 232 to rotate around the axial direction of the second 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 second lead screw 232, and the jaw 231 with the through hole is fixedly connected to the second housing 240. The second 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 second lead screw 232. The inner wall of the through hole does not have an internal thread. By providing a second 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 second 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 second lead screw 232. When the second lead screw 232 rotates around its own axis, the jaw 231 with the threaded through hole will move along the axis of the second 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.

[0069] It should be noted that the second housing 240 has an opening extending axially along the second 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 second 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 second 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 second lead screw 232, so as to improve the sealing effect of the opening by utilizing the telescopic characteristics of the dust cover 280.

[0070] In addition, the gripper 231 is provided with an oil injection hole to facilitate lubrication of the second lead screw 232 and the gripper 231.

[0071] 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.

[0072] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A weighing mechanism, characterized in that, The device includes a weighing sensor (110), a support member (120), a suspension member (130), and a lifting assembly (140). The support member (120) is fixed to the deformable end (111) of the weighing sensor (110). The suspension member (130) is fixedly connected to the workpiece and can be suspended and fixed with the support member (120). The output end of the lifting assembly (140) is located below the suspension member (130). The output end of the lifting assembly (140) can move upward and drive the suspension member (130) to move upward, so that the suspension member (130) can switch between a first working state of being suspended and fixed with the support member (120) and a second state of being placed on the output end of the lifting assembly (140).

2. The weighing mechanism according to claim 1, characterized in that, The lifting assembly (140) includes: A first drive member (142) has a power transmission shaft that rotates about a horizontal axis; The first transmission module has its input end connected to the power transmission shaft; An abutment (141) is disposed below the suspension member (130). The abutment (141) is capable of abutting against the suspension member (130). The abutment (141) is connected to the output end of the first transmission module. The first transmission module is configured to change the power transmission direction of the first drive member (142). The first transmission module is capable of driving the abutment (141) to move in the vertical direction.

3. The weighing mechanism according to claim 2, characterized in that, The first transmission module includes: A first transmission structure (143) includes two meshing bevel gears (1431), one of which is coaxially fixed to the power transmission shaft; and The second transmission structure (144) includes a first lead screw (1441) and a lifting seat (1442) with threaded engagement. The first lead screw (1441) extends along the vertical direction and is coaxially fixed with the other of the two bevel gears (1431). The lifting seat (1442) is sleeved on the axial outer periphery of the first lead screw (1441) and threadedly engaged with the first lead screw (1441). The abutment (141) is fixed above the lifting seat (1442).

4. The weighing mechanism according to claim 3, characterized in that, The lifting assembly (140) also includes: The base (146) has the first driving member (142) mounted on it. The lifting seat (1442) has a limiting pin (14421) extending along the vertical direction. The base (146) has a guide hole (1461) and the limiting pin (14421) slides in cooperation with the guide hole (1461) along the vertical direction.

5. The weighing mechanism according to claim 4, characterized in that, The lifting assembly (140) also includes: A guide post (145) is fixed on the base (146) and extends along the vertical direction. The suspension member (130) has a mating notch (1341) extending along the vertical direction. The guide post (145) and the mating notch (1341) slide together along the vertical direction.

6. The weighing mechanism according to any one of claims 1-5, characterized in that, The weighing mechanism also includes: The first housing (170) has a first receiving cavity for accommodating the weighing sensor (110), the carrier (120), the suspension member (130) and the lifting assembly (140). The top of the first receiving cavity is provided with a downwardly extending limiting post, and the suspension member (130) can be fixed upward with the limiting post.

7. The weighing mechanism according to any one of claims 1-5, characterized in that, The upper end face of the suspension member (130) is provided with a suspension groove (132), which extends through the suspension member (130) in the horizontal direction. The suspension groove (132) includes a limiting part (1321) and a receiving part (1322) connected sequentially from top to bottom. The width of the limiting part (1321) in the horizontal direction is smaller than the width of the receiving part (1322) in the horizontal direction. The receiving part (1322) is used to receive the carrier member (120). The position of the carrier member (120) in the receiving part (1322) is adjustable in the vertical direction.

8. A weighing and handling device, characterized in that, Includes a clamping mechanism (200) and a weighing mechanism as described in any one of claims 1-7, wherein the clamping mechanism (200) is capable of clamping and fixing the workpiece; The lower end of the suspension component (130) is provided with a mounting flange (131), which is fixedly connected to the upper end of the clamping mechanism (200).

9. The weighing and handling device according to claim 8, characterized in that, The center line of gravity of the mounting flange (131) coincides with the center line of gravity of the clamping mechanism (200); And / or, the mounting flange (131) 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.

10. The weighing and handling device according to claim 8, characterized in that, The weighing and handling device further includes: The display mechanism is communicatively connected to the weighing sensor (110). The display mechanism is used to display the detection information of the weighing mechanism. The display mechanism is integrated with the weighing mechanism, or the display mechanism and the weighing mechanism are set separately.

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