Automatic weighing machine

Abstract

The utility model relates to an automatic weighing machine, which solves the problem of low efficiency during weighing of precious metals in the prior art. Comprising a shell, an electronic scale, a first feeding mechanism, a first feeding slide way, a second feeding mechanism, a second feeding slide way, a third feeding mechanism, a third feeding slide way and a cutter mechanism, and a storage barrel is arranged on a scale pan of the electronic scale. The automatic weighing machine is provided with the three feeding mechanisms, the first feeding mechanism can supply large-particle materials, the second feeding mechanism can supply small-particle materials, the rotating disc on the third feeding mechanism is wound with linear materials, the linear materials are conveyed through the feeding roller set, the cutter mechanism cuts off the linear materials, and the automatic weighing machine is convenient to use. In the weighing process, the large-particle materials and the small-particle materials are subjected to weight balancing to be close to the preset weight, then the linear materials are discharged and subjected to weight balancing compensation, the final weight balancing requirement is met, and therefore automatic weighing is achieved, weighing is accurate, and efficiency is high.

Description

Technical Field

[0001] The utility model relates to the field of precious metal processing, in particular to an automatic weighing machine. Background Art

[0002] When precious metals are processed and produced, they usually need to be divided into blocks of equal weight and then melted and molded. Since precious metals are relatively expensive, they are weighed by gram with an accuracy of less than or equal to 0.01 gram. Therefore, the requirements for weighing are relatively high. The existing weighing usually weighs a larger block first, and then takes a smaller block to compensate so that the overall weight reaches the specified weight. The existing weighing is usually done manually, resulting in low weighing efficiency. Utility Model Content

[0003] The utility model aims to solve the problem of low efficiency in the existing precious metal weighing.

[0004] The technical solution adopted to solve the technical problem proposed by the utility model is as follows: the automatic weighing machine of the utility model includes a shell, an electronic scale, a first feeding mechanism, a first feeding chute, a second feeding mechanism, a second feeding chute, a third feeding mechanism, a third feeding chute and a cutting mechanism. A storage barrel is provided on the weighing plate of the electronic scale. One end of the first feeding chute is connected to the first feeding mechanism, and the discharge port of the first feeding chute is arranged corresponding to the top of the storage barrel. One end of the second feeding chute is connected to the second feeding mechanism, and the discharge port of the second feeding chute is arranged corresponding to the top of the storage barrel. The third feeding mechanism includes a turntable for winding linear materials and a feeding roller assembly. The feed port of the third feeding channel is arranged corresponding to the discharge end of the feeding roller assembly, the discharge port of the third feeding channel is arranged corresponding to the top of the storage barrel, and the cutting mechanism is arranged corresponding to the discharge port of the third feeding channel.

[0005] The technical solutions further defining the utility model include:

[0006] A material guiding channel is arranged above the material storage barrel, and the discharge port of the first feeding slideway, the discharge port of the second feeding slideway and the discharge port of the third feeding slideway are all arranged corresponding to the material guiding channel.

[0007] The first feeding mechanism includes a first funnel silo and a first vibrating plate. The discharge port of the first funnel silo is arranged corresponding to the top of the first vibrating plate. The discharge port of the first vibrating plate is provided with a first conical opening for material to flow out. The first conical opening is arranged corresponding to the feed port of the first feeding chute.

[0008] The second feeding mechanism includes a second funnel silo and a second vibrating plate. The discharge port of the second funnel silo is arranged corresponding to the top of the second vibrating plate. The discharge port of the second vibrating plate is provided with a second conical port for material to flow out. The second conical port is arranged corresponding to the feed port of the second feeding chute.

[0009] The first feeding chute and the second feeding chute are both provided with valves, the back of the valve is provided with a weighing sensor for detecting the weight of the material on the valve, and the housing is provided with a valve driving motor for driving the valve to rotate open or close.

[0010] The feeding roller assembly includes a transmission wheel group and a guide wheel group, the guide wheel is located between the transmission wheel group and the turntable, the transmission wheel group includes a first transmission wheel and a second transmission wheel arranged relatively to each other and a transmission drive mechanism driving the first transmission wheel and the second transmission wheel to rotate synchronously in opposite directions, and the guide wheel group includes more than one guide wheel monomer for guiding the linear material on the turntable to between the first transmission wheel and the second transmission wheel.

[0011] The outer periphery of the guide wheel unit is provided with a circle of inwardly concave guide grooves.

[0012] The cutter mechanism includes a cutter head, a rack, a driving gear and a cutter drive motor. The cutter drive motor is installed in a shell. The driving gear is connected to the main shaft of the cutter drive motor. The rack is meshed with the driving gear. The rack is connected to the shell for vertical sliding connection. The cutter head is fixed on the rack. The cutter head is arranged above the discharge port of the third feeding channel. The cutter drive motor drives the driving gear to rotate and drives the rack to move up and down.

[0013] The cutout of the cutter head is in an inverted V shape.

[0014] A protective cover is arranged on the weighing body of the electronic scale, the weighing pan of the electronic scale is located in the protective cover, a protective cover feeding port is arranged above the protective cover for materials to enter the storage barrel, and a movable door is arranged on the side of the protective cover.

[0015] The bottom of the shell is provided with a universal wheel and a foot pad support, the foot pad support is provided with a screw rod, and the shell is provided with a threaded hole matched with the screw rod.

[0016] Through the above technical scheme, the beneficial effects of the utility model are as follows: the automatic weighing machine of the utility model is provided with three feeding mechanisms, the first feeding mechanism can supply large-particle materials, the second feeding mechanism can supply small-particle materials, and the turntable on the third feeding mechanism is wound with linear materials, the linear materials are transported by the feeding roller group, and the cutting mechanism cuts the linear materials. When weighing, the large-particle materials and the small-particle materials are first weighed to a weight close to a predetermined weight, and then the linear materials are discharged for weight compensation to meet the final weight requirement, thereby realizing automatic weighing with accurate weighing and high efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The utility model is a three-dimensional structural schematic diagram of an automatic weighing machine installed and positioned in a tooling.

[0018] Figure 2 It is a structural schematic diagram of a first feeding mechanism and a second feeding mechanism of an automatic weighing machine of the utility model.

[0019] Figure 3 It is a structural schematic diagram of the third feeding mechanism of an automatic weighing machine of the utility model.

[0020] Figure 4 The utility model is a schematic diagram of the structure of a transmission drive mechanism of an automatic weighing machine.

[0021] Figure 5 The utility model is a schematic diagram of the cross-section structure of a valve of an automatic weighing machine.

[0022] Figure 6 The utility model is a schematic structural diagram of a cutter mechanism of a valve of an automatic weighing machine. DETAILED DESCRIPTION

[0023] The structure of the utility model is further described below in conjunction with the accompanying drawings.

[0024] Reference Figures 1 to 6, the precious metal combined with gold in the embodiment of the utility model is used to illustrate that the material supplied by the first feeding mechanism is large-particle gold balls, the material supplied by the second feeding mechanism is small-particle gold balls, and the material supplied by the third feeding mechanism is gold wire. The automatic weighing machine of the utility model is not limited to metal gold, but can also be other metals, and the shape of the metal is not limited. The automatic weighing machine of the utility model includes a shell 10, an electronic scale 20, a first feeding mechanism 30, a first feeding slide 31, a second feeding mechanism 40, a second feeding slide 41, a third feeding mechanism 50, a third feeding slide 51 and a cutting mechanism 52, an electronic scale 20, a first feeding mechanism 30, a first feeding slide 31, a second feeding mechanism 40, a second feeding slide 41, a third feeding mechanism 50, a third feeding slide 51 and a cutting mechanism 52, A storage barrel 60 is provided on the weighing pan 21 of the scale 20, one end of the first feeding slide is connected to the first feeding mechanism, and the discharge port of the first feeding slide is arranged above the storage barrel, one end of the second feeding slide is connected to the second feeding mechanism, and the discharge port of the second feeding slide is arranged above the storage barrel, the third feeding mechanism 50 includes a turntable 501 for winding linear materials and a feeding roller assembly 502, the feed port of the third feeding channel is arranged corresponding to the discharge end of the feeding roller assembly, the discharge port of the third feeding channel is arranged above the storage barrel, and the cutter mechanism is arranged above the discharge port 511 of the third feeding channel. The third feeding channel is cylindrical, and the discharge port 511 of the third feeding channel is a conical port to prevent the gold wire from shaking at the discharge port, so that the cutter can quickly cut the gold wire.

[0025] The automatic weighing machine of the utility model is provided with three feeding mechanisms, the first feeding mechanism can supply large-particle materials, the second feeding mechanism can supply small-particle materials, the turntable on the third feeding mechanism is wound with linear materials, the linear materials are transported by a feeding roller group, and the cutting mechanism cuts the linear materials. During weighing, the large-particle materials supplied by the first feeding mechanism slide down and are discharged through the first feeding chute, when the large-particle materials are close to the weight within a predetermined range, the first feeding mechanism stops feeding, the small-particle materials supplied by the second feeding mechanism slide down and are discharged through the second feeding chute, when the small-particle materials are close to the weight within a predetermined range, the second feeding mechanism stops feeding, the large-particle materials and the small-particle materials are first weighted to a weight close to the predetermined weight, and finally the third feeding mechanism is started, and the third feeding mechanism supplies the linear materials to compensate for the predetermined missing weight, thereby realizing automatic weighing, and the weighing is accurate and efficient.

[0026] In this embodiment, the first feeding mechanism 30 includes a first hopper bin 301 and a first vibrating plate 302. The first hopper bin is located at the top of the shell, so that it is convenient to feed the first hopper bin from the top of the shell. The discharge port of the first hopper bin corresponds to the arrangement above the first vibrating plate. The discharge port of the first vibrating plate is provided with a first conical port 3021 for the material to flow out. The first conical port corresponds to the feed port of the first feeding chute. The large particle material in the first hopper bin flows out from the bottom of the first hopper onto the vibrating plate. During the vibration of the first vibrating plate, the material flows toward the first conical port and flows out from the first conical port. The outflowing material flows to the first feeding chute through the feed port of the first feeding chute.

[0027] In this embodiment, the second feeding mechanism 40 includes a second hopper bin 401 and a second vibrating plate 402. The second hopper bin is located at the top of the shell, so that it is convenient to feed the second hopper bin from the top of the shell. The discharge port of the second hopper bin corresponds to the upper part of the second vibrating plate. The discharge port of the second vibrating plate is provided with a second conical port 4021 for the material to flow out. The second conical port corresponds to the feed port of the second feeding chute. The small particle material in the second hopper bin flows out from the bottom of the second hopper onto the vibrating plate. During the vibration of the second vibrating plate, the material flows toward the first conical port and flows out from the first conical port. The outflowing material flows to the first feeding chute through the feed port of the first feeding chute.

[0028] In this embodiment, the first feeding chute and the second feeding chute are connected and arranged in an integrated manner. A valve 70 is arranged in the first feeding chute and the second feeding chute. A weighing sensor 72 for detecting the weight of the material on the valve is arranged on the back of the valve. A valve driving motor 71 is arranged in the housing. The rotating shaft of the valve is fixedly connected to the main shaft of the valve motor. The valve driving motor drives the valve to rotate and open the first feeding channel and the second feeding channel at the same time or close the first feeding channel and the second feeding channel at the same time. When feeding, close the valve, the first vibration plate vibrates and discharges the material first, and the large particle material flowing out is intercepted by the valve. When the predetermined weight is reached, the weighing sensor transmits a signal to the controller of the whole machine, the controller closes the first vibration plate, starts the second vibration plate, the second vibration plate vibrates and discharges the material, and the small particle material flowing out is intercepted by the valve. When the predetermined weight is reached, the weighing sensor transmits a signal to the controller of the whole machine, the controller closes the second vibration plate, the controller controls the valve driving motor to start, the valve driving motor drives the valve to rotate and open, and at the same time starts the third feeding mechanism to supply linear material to compensate for the predetermined missing weight. Then take away the material in the storage barrel. Because of the existence of the valve, while the third feeding mechanism is supplying, the valve can be closed, and the first feeding mechanism can be started to start feeding to start a new cycle. First, the large-particle material and the small-particle material are batched to the predetermined weight. After the linear material supplied by the third feeding mechanism in the previous cycle is completed, the prepared material on the valve can be opened and flowed into the storage barrel, thereby improving the batching efficiency. In specific implementation, the valve can also be omitted. When the valve is not set, the first feeding mechanism feeds first. When the large-particle material flows directly into the storage barrel to reach the predetermined weight, the second feeding mechanism starts to feed. When the small-particle material flows into the storage barrel to reach the predetermined weight, the third feeding mechanism starts to compensate for the predetermined missing weight, thereby realizing automatic weighing. The weighing efficiency of this scheme does not take into account the scheme of setting a valve.

[0029] In this embodiment, a material guide channel 80 is provided above the storage barrel 60, and the discharge ports of the first feeding chute, the second feeding chute, and the third feeding chute are all arranged corresponding to the material guide channel. The material guide channel is a funnel-shaped structure, and the discharge port of the third feeding chute is located at the upper part of the material guide channel, and the discharge port of the third feeding chute extends into the material guide channel. An opening is provided in the middle of the material guide channel, and the discharge port of the first feeding chute and the discharge port of the second feeding chute are obliquely downwardly connected with the opening, so as to guide the material into the storage barrel to prevent the material from splashing out.

[0030] In this embodiment, the feed roller assembly 502 includes a transmission wheel group 5021 and a guide wheel group 5022, the guide wheel is located between the transmission wheel group and the turntable, the transmission wheel group 5021 includes a first transmission wheel 50211 and a second transmission wheel 50212 arranged opposite to each other and a transmission drive mechanism 5023 driving the first transmission wheel and the second transmission wheel to rotate synchronously in opposite directions, and the guide wheel group 5022 includes more than one guide wheel monomer 50221 for guiding the linear material on the turntable to between the first transmission wheel and the second transmission wheel. In this embodiment, the guide wheel monomers are arranged in two rows, and the adjacent guide wheel monomers in the upper and lower rows are arranged in a transverse staggered manner, and a circle of concave guide grooves 50222 is arranged on the outer periphery of the guide wheel monomer 50221. The transmission drive mechanism 5023 is a motor gear set drive mechanism, a first transmission wheel drive motor 50231 is provided in the housing, the first transmission wheel drive motor drives the first transmission wheel to rotate through the first pulley 50232, a first transmission gear 50233 is provided on the rotating shaft of the first transmission wheel, a second transmission gear 50234 is provided on the rotating shaft of the second transmission wheel, the first transmission gear and the second transmission gear are arranged in coordination, the first transmission gear drives the second transmission gear to rotate synchronously in the opposite direction, so that the first transmission wheel and the second transmission wheel rotate synchronously in the opposite direction, thereby pulling the gold wire to the third feeding slideway for transmission, the gold wire extends from the discharge port of the third feeding slideway, and the cutter mechanism cuts the gold wire. The feeding length of the gold wire can be controlled by controlling the number of revolutions of the first transmission wheel drive motor.

[0031] In this embodiment, the cutter mechanism 52 includes a cutter head 521, a rack 522, a driving gear 523 and a cutter drive motor 524. The cutter drive motor is installed in the housing, and the driving gear is connected to the main shaft of the cutter drive motor through a second pulley 525. In specific implementation, the driving gear can also be fixedly connected to the main shaft of the cutter drive motor, and the main shaft of the cutter drive motor directly drives the driving gear to rotate. The rack is meshed with the driving gear, and the rack is connected to the housing for sliding up and down. The cutter head is fixed on the rack, and the cutter head is arranged above the discharge port of the third feeding channel. The rotation of the driving gear of the cutter drive motor drives the rack to move up and down, thereby cutting off the gold wire at the discharge port. The cutter head's incision 5211 is an inverted V shape, which can position the gold wire at the cutter head's incision to prevent the gold wire from moving during cutting, so that the gold wire can be quickly cut off.

[0032] In this embodiment, a protective cover 11 is provided on the scale body 22 of the electronic scale 20, and the weighing pan 21 of the electronic scale is located inside the protective cover. A protective cover feed port 111 is provided above the protective cover for materials to enter the storage barrel, and a movable door 112 is provided on the side of the protective cover. The movable door is rotatably connected to the side wall of the protective cover through a hinge 113 provided on the upper part of the side wall of the protective cover. The movable door is rotated upward to open the movable door, and the storage barrel in the protective cover can be taken out. The movable door is released, and the movable door is automatically closed under the action of gravity. A handle 114 can be provided on the movable door to facilitate the opening of the movable door. The movable door is closed to prevent the material splashing out of the storage barrel from rolling to the ground.

[0033] In this embodiment, a universal wheel 12 and a foot support 13 are provided at the bottom of the housing 10. The foot support is provided with a screw 131, and the housing is provided with a threaded hole that matches the screw. The foot support can adjust the height of the housing upwards through the screw so that the universal wheel is suspended in the air. At this time, the foot support can stably support the housing. When the housing needs to be moved, the height of the housing can be adjusted downwards through the screw so that the universal wheel touches the ground, which makes it convenient to move the housing.

[0034] Although the specific implementation of the utility model is described in detail in conjunction with the drawings, it should not be understood as limiting the protection scope of the utility model. Within the scope described in the claims, various modifications and variations that can be made by those skilled in the art without creative work still belong to the protection scope of the utility model.

Claims

1. An automatic weighing machine, characterized in that: The automatic weighing machine includes a shell, an electronic scale, a first feeding mechanism, a first feeding chute, a second feeding mechanism, a second feeding chute, a third feeding mechanism, a third feeding channel and a cutting mechanism. A storage barrel is provided on the weighing pan of the electronic scale. One end of the first feeding chute is connected to the first feeding mechanism, and the discharge port of the first feeding chute is arranged corresponding to the top of the storage barrel. One end of the second feeding chute is connected to the second feeding mechanism, and the discharge port of the second feeding chute is arranged corresponding to the top of the storage barrel. The third feeding mechanism includes a turntable for winding linear materials and a feeding roller assembly. The feed port of the third feeding channel is arranged corresponding to the discharge end of the feeding roller assembly, the discharge port of the third feeding channel is arranged corresponding to the top of the storage barrel, and the cutting mechanism is arranged corresponding to the discharge port of the third feeding channel.

2. An automatic weighing machine as claimed in claim 1, characterized in that: A material guiding channel is arranged above the material storage barrel, and the discharge port of the first feeding slideway, the discharge port of the second feeding slideway and the discharge port of the third feeding slideway are all arranged corresponding to the material guiding channel.

3. An automatic weighing machine as claimed in claim 1, characterized in that: The first feeding mechanism includes a first funnel silo and a first vibrating plate. The discharge port of the first funnel silo is arranged corresponding to the top of the first vibrating plate. The discharge port of the first vibrating plate is provided with a first conical opening for material to flow out. The first conical opening is arranged corresponding to the feed port of the first feeding chute.

4. An automatic weighing machine as claimed in claim 1, characterized in that: The second feeding mechanism includes a second funnel silo and a second vibrating plate. The discharge port of the second funnel silo is arranged corresponding to the top of the second vibrating plate. The discharge port of the second vibrating plate is provided with a second conical port for material to flow out. The second conical port is arranged corresponding to the feed port of the second feeding chute.

5. An automatic weighing machine as claimed in claim 1, characterized in that: The first feeding chute and the second feeding chute are both provided with valves, the back of the valve is provided with a weighing sensor for detecting the weight of the material on the valve, and the housing is provided with a valve driving motor for driving the valve to rotate open or close.

6. An automatic weighing machine as claimed in claim 1, characterized in that: The feeding roller assembly includes a transmission wheel group and a guide wheel group, the guide wheel is located between the transmission wheel group and the turntable, the transmission wheel group includes a first transmission wheel and a second transmission wheel arranged relatively to each other and a transmission drive mechanism driving the first transmission wheel and the second transmission wheel to rotate synchronously in opposite directions, and the guide wheel group includes more than one guide wheel monomer for guiding the linear material on the turntable to between the first transmission wheel and the second transmission wheel.

7. An automatic weighing machine as claimed in claim 1, characterized in that: The cutter mechanism includes a cutter head, a rack, a driving gear and a cutter drive motor. The cutter drive motor is installed in a shell. The driving gear is connected to the main shaft of the cutter drive motor. The rack is meshed with the driving gear. The rack is connected to the shell for vertical sliding connection. The cutter head is fixed on the rack. The cutter head is arranged above the discharge port of the third feeding channel. The cutter drive motor drives the driving gear to rotate and drives the rack to move up and down.

8. An automatic weighing machine as claimed in claim 7, characterized in that: The cutout of the cutter head is in an inverted V shape.

9. An automatic weighing machine as claimed in claim 1, characterized in that: A protective cover is arranged on the weighing body of the electronic scale, the weighing pan of the electronic scale is located in the protective cover, a protective cover feeding port is arranged above the protective cover for materials to enter the storage barrel, and a movable door is arranged on the side of the protective cover.

10. An automatic weighing machine as claimed in claim 1, characterized in that: The bottom of the shell is provided with a universal wheel and a foot pad support, the foot pad support is provided with a screw rod, and the shell is provided with a threaded hole matched with the screw rod.

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