Weighing machine

Abstract

The utility model discloses a weighing machine, which comprises a base and a suspended weighing assembly, and is characterized in that a discharging channel is arranged in the base; the suspended weighing assembly comprises a weighing unit, a conveying mechanism and a hopper, the weighing unit is arranged on the base, the conveying mechanism is arranged at a discharging port of the hopper, an output port of the conveying mechanism corresponds to an inlet of the discharging channel, the conveying mechanism and / or the hopper are / is arranged on the weighing unit, and the hopper is arranged on the base. The weighing unit can weigh the conveying mechanism, the hopper and materials located in the conveying mechanism and the hopper, the weight of the output materials can be conveniently obtained, therefore, accurate quantitative conveying of the materials is achieved, and the weighing efficiency is high.

Description

Technical Field

[0001] This utility model relates to the field of injection molding peripheral equipment technology, and in particular to a weighing machine. Background Technology

[0002] In the injection molding process, in addition to the main plastic, various auxiliary materials such as color masterbatch and fillers need to be added to the injection molding material, and they need to be configured in a certain proportion. Therefore, it is necessary to weigh and proportion each component of the injection molding material.

[0003] For materials requiring high weighing accuracy, it is usually necessary to pour the material into a special weighing bucket and weigh it using a scale. Although this can achieve good accuracy, the weighing efficiency is relatively low and the operation is cumbersome. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a weighing machine with high weighing efficiency and high weighing accuracy.

[0005] A weighing machine according to a first aspect of the present invention includes a base and a suspended weighing assembly. The base has a discharge channel. The suspended weighing assembly includes a weighing unit, a conveying mechanism, and a hopper. The weighing unit is located on the base, the conveying mechanism is located at the discharge port of the hopper, the output port of the conveying mechanism corresponds to the inlet of the discharge channel, and the conveying mechanism and / or the hopper is located on the weighing unit. The weighing unit is capable of weighing the conveying mechanism, the hopper, and the material located in the conveying mechanism and the hopper.

[0006] The weighing machine according to the embodiments of the present utility model has at least the following beneficial effects: the weighing unit can weigh the conveying mechanism, the hopper and the material located in the conveying mechanism and the hopper as a whole, and can conveniently obtain the weight of the output material, thereby realizing accurate quantitative conveying of the material, and the weighing efficiency is high.

[0007] According to some embodiments of the present invention, a fixing frame is fixedly installed on the side of the base, and the weighing unit is fixedly installed to the fixing frame.

[0008] According to some embodiments of the present invention, the weighing bracket is provided with a protective cover, which can cover the side and / or top of the hopper, and there is a gap between the inner wall of the protective cover and the hopper.

[0009] According to some embodiments of the present invention, a clearance opening is provided on the side of the base, and the output end of the conveying mechanism passes through the clearance opening into the base and aligns the output port of the conveying mechanism with the inlet of the discharge channel.

[0010] According to some embodiments of the present invention, the suspended weighing assembly includes a weighing frame, the weighing frame is disposed in the weighing area of ​​the weighing unit, the conveying mechanism is disposed on the weighing frame, the hopper is disposed above the weighing frame, and the discharge port of the hopper is aligned with the input port of the conveying mechanism.

[0011] According to some embodiments of the present invention, the conveying mechanism is a screw conveying mechanism, which includes a rotation drive unit, a screw, and a barrel. The barrel is disposed on the weighing frame, the screw is rotatably disposed inside the barrel, the rotation drive unit is connected to the screw, one end of the barrel is provided with the input port, and the other end of the barrel is provided with the output port.

[0012] According to some embodiments of the present invention, the end of the material cylinder with the output port is inserted into the base and located above the inlet of the discharge channel, with the output port facing downward and corresponding to the inlet of the discharge channel.

[0013] According to some embodiments of the present invention, the screw and the barrel are gradually lifted along the conveying direction.

[0014] According to some embodiments of the present invention, the lifting angle α between the screw and the barrel is 2° to 10°.

[0015] According to some embodiments of the present invention, the weighing machine further includes a control system, which is connected to the weighing unit. The control system is capable of recording the weighing data of the weighing unit and obtaining the changes in the weighing data.

[0016] According to some embodiments of the present invention, the weighing machine further includes a stirring mechanism, which includes a stirring shaft assembly disposed in the discharge channel and a stirring drive unit capable of driving the stirring shaft assembly to rotate.

[0017] According to some embodiments of the present invention, the stirring shaft assembly includes multiple sets of spiral blades spaced apart along its axial direction.

[0018] According to some embodiments of the present invention, the spiral blade is provided with a plurality of internal through holes that are distributed in an annular interval with the axial direction as the center.

[0019] According to some embodiments of the present invention, the adjacent helical blades have opposite rotation directions.

[0020] According to some embodiments of the present invention, the stirring drive unit is fixedly installed on one side of the base, and the other side of the base is provided with a mixing observation window corresponding to the stirring shaft assembly.

[0021] According to some embodiments of the present invention, a mixing observation port is provided on the side of the base, and the mixing observation window is detachably installed to the mixing observation port.

[0022] According to some embodiments of the present invention, the top of the base is provided with a top maintenance port corresponding to the inlet of the discharge channel.

[0023] According to some embodiments of the present invention, a guide member is provided inside the base, a cavity is provided inside the guide member, an opening is provided at the bottom of the cavity corresponding to the inlet of the discharge channel, and side openings are provided on both sides of the cavity, one of the side openings is for the conveying mechanism to extend into, and a feeding observation window is provided on the side of the base corresponding to the other side opening. Attached Figure Description

[0024] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0025] Figure 1 This is a schematic diagram of the structure of the weighing machine according to an embodiment of the present utility model;

[0026] Figure 2 This is an exploded view of the weighing machine according to an embodiment of the present utility model;

[0027] Figure 3 This is a cross-sectional schematic diagram of the weighing machine according to an embodiment of the present utility model;

[0028] Figure 4 This is a schematic diagram of the structure of the suspended weighing component according to an embodiment of the present invention;

[0029] Figure 5 This is an exploded view of the suspended weighing component according to an embodiment of the present utility model;

[0030] Figure 6 This is a schematic diagram of the stirring mechanism according to an embodiment of the present invention.

[0031] Figure label:

[0032] Base 100, discharge channel 101, clearance opening 102, mixing observation opening 103, top maintenance opening 104, fixing frame 110, protective cover 120, guide component 130, feeding observation window 140;

[0033] Suspended weighing assembly 200, weighing unit 210, output port 221, input port 222, hopper 230, discharge port 231, weighing frame 240, rotation drive unit 250, screw 260, and material cylinder 270;

[0034] The stirring mechanism 300, the stirring shaft assembly 310, the spiral blade 311, the inner through hole 312, and the stirring drive unit 320 are included. Detailed Implementation

[0035] The embodiments of this utility model 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 elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0036] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0037] In the description of this utility model, the use of "first" and "second" is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features or the order of the technical features.

[0038] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0039] The following is for reference. Figures 1 to 5 A weighing machine according to an embodiment of the present utility model is described.

[0040] like Figures 1 to 3 As shown, the weighing machine according to an embodiment of the present invention includes a base 100 and a suspended weighing assembly 200. The base 100 is provided with a discharge channel 101. The suspended weighing assembly 200 includes a weighing unit 210, a conveying mechanism, and a hopper 230. The weighing unit 210 is disposed on the base 100. The conveying mechanism is disposed at the discharge port 231 of the hopper 230. The output port 221 of the conveying mechanism corresponds to the inlet of the discharge channel 101. The conveying mechanism and / or the hopper 230 are disposed on the weighing unit 210. The weighing unit 210 is capable of weighing the conveying mechanism, the hopper 230, and the materials located in the conveying mechanism and the hopper 230.

[0041] Since the weighing unit 210 can weigh the conveying mechanism, the hopper 230 and the material located in the conveying mechanism and the hopper 230 as a whole, it can easily obtain the weight of the output material, thereby realizing accurate quantitative conveying of the material and high weighing efficiency.

[0042] Specifically, the conveying mechanism and the hopper 230 are connected to the base 100 via the weighing unit 210, so that the conveying mechanism and the hopper 230 are suspended relative to the base 100. The weighing unit 210 can accurately obtain the total weight of the conveying mechanism, the hopper 230, and the material located in the conveying mechanism and the hopper 230. The control system starts and stops the conveying mechanism according to the weight change, or the conveying mechanism is started and stopped by manually observing the value change of the weighing unit 210. The set amount of material can be output, and the weighing efficiency is high. The material can be weighed during the feeding and discharging process, which improves the efficiency of material configuration.

[0043] In some embodiments of this utility model, the weighing machine further includes a control system, which is connected to the weighing unit 210 and the conveying mechanism. The control system is able to record the weighing data of the weighing unit 210 and obtain the changes in the weighing data.

[0044] Specifically, the control system can calculate the weight difference between the current time and the initial time to obtain the weight of the output material. When the weight of the output material equals the set value, the control system controls the conveying mechanism to stop and wait for the next output command.

[0045] It is understandable that, in the specific implementation process, the changes in the value of the weighing unit 210 can also be observed manually. When the value of the weighing unit 210 reaches the set value, the conveying mechanism can be manually shut down and then turned on again when the next conveying is needed.

[0046] like Figure 1 , Figure 2 As shown, in some embodiments of this utility model, a fixing frame 110 is fixedly installed on the side of the base 100, and the weighing unit 210 is fixedly installed to the fixing frame 110 so that the suspended weighing component 200 is disposed on the side of the base 100.

[0047] like Figure 1 , Figure 2 , Figure 3 As shown, in some embodiments of this utility model, the fixing frame 110 is provided with a protective cover 120. The protective cover 120 can cover the side and / or top of the hopper 230, and there is a gap between the inner wall of the protective cover 120 and the hopper 230. The protective cover 120 can reduce the occurrence of external objects contacting the hopper 230 and improve the weighing accuracy.

[0048] like Figure 3 As shown, in some embodiments of this utility model, the base 100 has a clearance opening 102 on its side. The output end of the conveying mechanism passes through the clearance opening 102 into the base 100 and aligns the output port 221 of the conveying mechanism with the inlet of the discharge channel 101, so that the conveying mechanism can send the material into the discharge channel 101, which is a reasonable layout.

[0049] It is understood that in some embodiments of this utility model, the suspended weighing component 200 may also be disposed above the base 100, which will not be described in detail here.

[0050] like Figures 1 to 5 As shown, in some embodiments of this utility model, the suspended weighing assembly 200 includes a weighing frame 240, which is disposed in the weighing area of ​​the weighing unit 210. The conveying mechanism is disposed on the weighing frame 240, and the hopper 230 is disposed above the weighing frame 240. The discharge port 231 of the hopper 230 is aligned with the input port 222 of the conveying mechanism. By installing the conveying mechanism and the hopper 230 through the weighing frame 240 and connecting them to the weighing unit 210, the conveying mechanism, the hopper 230, and the materials located in the conveying mechanism and the hopper 230 can be weighed.

[0051] It is understood that in some embodiments of this utility model, the hopper 230 can be set in the weighing area of ​​the weighing unit 210, and the conveying mechanism can be set below the hopper 230. That is, the weighing unit 210 weighs the conveying mechanism through the hopper 230, and can also weigh the conveying mechanism, the hopper 230 and the material located in the conveying mechanism and the hopper 230.

[0052] It is conceivable that in some embodiments of this utility model, the conveying mechanism can be set in the weighing area of ​​the weighing unit 210, and the hopper 230 can be set above the conveying mechanism. That is, the weighing unit 210 weighs the hopper 230 through the conveying mechanism, which can also realize the weighing of the conveying mechanism, the hopper 230 and the materials located in the conveying mechanism and the hopper 230.

[0053] like Figure 3 , Figure 4 , Figure 5As shown, in some embodiments of this utility model, the conveying mechanism is a screw conveying mechanism, which includes a rotation drive unit 250, a screw 260, and a material cylinder 270. The material cylinder 270 is disposed on the weighing frame 240, and the screw 260 is rotatably disposed inside the material cylinder 270. The rotation drive unit 250 is connected to the screw 260. One end of the material cylinder 270 is provided with the inlet 222, and the other end of the material cylinder 270 is provided with the outlet 221. By rotating the screw 260, the material can be transferred from the inlet 222 to the outlet 221 and discharged, thereby realizing the conveying of the material.

[0054] Specifically, the screw conveyor mechanism delivers smoothly, minimizing its impact on the weighing of the weighing unit 210, thus enabling the weighing machine to achieve high weighing accuracy.

[0055] It is understood that in some embodiments of this utility model, the conveying mechanism may also be a belt conveyor mechanism, etc., which will not be described in detail here.

[0056] like Figure 3 As shown, in some embodiments of this utility model, the end of the material cylinder 270 with the output port 221 is inserted into the base 100 and located above the inlet of the discharge channel 101. The output port 221 faces downward and corresponds to the inlet of the discharge channel 101, thereby sending the material into the discharge channel 101.

[0057] like Figure 3 As shown, in some embodiments of this utility model, the discharge channel 101 extends in the vertical direction, with the upper part being the inlet of the discharge channel 101 and the lower part being the outlet of the discharge channel 101. The material fed in by the conveying mechanism can fall into the inlet of the discharge channel 101 and be output from top to bottom by its own weight.

[0058] Specifically, the outlet of the discharge channel 101 is connected to the hopper or conveying channel of other mechanisms.

[0059] like Figure 3 As shown, in some embodiments of this utility model, the screw 260 and the barrel 270 are gradually raised along the conveying direction, that is, gradually raised from the input port 222 to the output port 221. The output port 221 is in a higher position, so that when the conveying mechanism is not started, the material in the barrel 270 is not easy to fall from the output port 221, thereby improving the accuracy of material output.

[0060] Specifically, injection molding materials are generally granular materials, which are prone to rolling off due to their own weight. By setting the screw 260 and the barrel 270 as a lifting structure, the material output by the conveying mechanism is basically the material actively fed out by the conveying mechanism, thereby improving the accuracy of material output.

[0061] like Figure 3 As shown, in some embodiments of this utility model, the lifting angle α between the screw 260 and the barrel 270 is 2° to 10°, which can better prevent materials from falling off automatically and can also reasonably arrange the screw conveying mechanism.

[0062] like Figure 1 , Figure 2 As shown, in some embodiments of this utility model, the weighing machine further includes a stirring mechanism 300. The stirring mechanism 300 includes a stirring shaft assembly 310 disposed in the discharge channel 101 and a stirring drive unit 320 capable of driving the stirring shaft assembly 310 to rotate. The stirring shaft assembly 310 stirs the material in the discharge channel 101, improving the smoothness of material conveying, reducing the occurrence of blockages, and also achieving the effect of stirring and mixing materials.

[0063] like Figure 6 As shown, in some embodiments of the present invention, the stirring shaft assembly 310 includes multiple sets of spiral blades 311 spaced apart along its axial direction to agitate the material in the discharge channel 101.

[0064] It is understood that in some embodiments of this utility model, the stirring shaft assembly 310 may also be provided with other blade structures, such as flat blades, inclined blades, etc.

[0065] like Figure 6 As shown, in some embodiments of this utility model, the spiral blade 311 is provided with a plurality of internal through holes 312 arranged in annular intervals with the axial direction as the center, so as to form a material channel in the internal region of the stirring shaft assembly 310 and improve the material stirring effect.

[0066] like Figure 6 As shown, in some embodiments of this utility model, the adjacent spiral blades 311 rotate in opposite directions, causing the material between the adjacent spiral blades 311 to be pushed in opposite directions, thereby improving the material mixing effect.

[0067] In some embodiments of this utility model, the stirring drive unit 320 is fixedly installed on one side of the base 100, and the other side of the base 100 is provided with a mixing observation window corresponding to the stirring shaft assembly 310, so as to observe the working status and material conveying status of the stirring shaft assembly 310.

[0068] like Figure 1 , Figure 2 As shown, in some embodiments of this utility model, the base 100 is provided with a mixing observation port 103 on its side. The mixing observation window is detachably installed on the mixing observation port 103 to facilitate the removal of the mixing observation window for maintenance of the mixing shaft assembly 310 and the discharge channel 101.

[0069] Specifically, the mixing observation window is a light-transmitting plate, which is installed to the base 100 by screws, clips, etc.

[0070] like Figure 1 , Figure 2 As shown, in some embodiments of this utility model, the top of the base 100 is provided with a top maintenance port 104 corresponding to the inlet of the discharge channel 101, so as to facilitate the maintenance of the interior of the base 100.

[0071] Specifically, the cover plate is installed at the top maintenance port 104 via a detachable mechanism such as screws and clips.

[0072] like Figures 1 to 3 As shown, in some embodiments of this utility model, a guide member 130 is provided inside the base 100, and a cavity is provided inside the guide member 130. The bottom of the cavity is provided with an opening corresponding to the inlet of the discharge channel 101. Side openings are provided on both sides of the cavity. One of the side openings is for the conveying mechanism to extend into. The side of the base 100 is provided with a feeding observation window 140 corresponding to the other side opening, so as to facilitate observation of the material output of the conveying mechanism.

[0073] Specifically, the conveying mechanism is a screw conveying mechanism, the feed observation window 140 corresponds to the screw 260 and the barrel 270, the feed observation window 140 is a light-transmitting plate, and is installed to the side of the base 100 by screws, buckle mechanisms, etc.

[0074] Of course, this invention is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A weighing machine, characterized in that, The weighing machine comprises: a base (100) provided with a discharging channel (101); a suspended weighing assembly (200) comprising a weighing unit (210), a conveying mechanism and a hopper (230), the weighing unit (210) being arranged on the base (100), the conveying mechanism being arranged at a discharging opening (231) of the hopper (230), an output opening (221) of the conveying mechanism corresponding to an inlet of the discharging channel (101), the conveying mechanism and / or the hopper (230) being arranged on the weighing unit (210), the weighing unit (210) being capable of weighing the conveying mechanism, the hopper (230) and material located in the conveying mechanism and the hopper (230).

2. The weighing machine according to claim 1, wherein a fixed frame (110) is fixedly arranged on a side of the base (100), and the weighing unit (210) is fixedly arranged on the fixed frame (110).

3. The weighing machine according to claim 2, wherein the fixed frame (110) is provided with a protective cover (120), the protective cover (120) being capable of shielding a side and / or a top of the hopper (230), and an inner wall of the protective cover (120) is spaced apart from the hopper (230).

4. The weighing machine according to claim 2, wherein an avoiding opening (102) is arranged on a side of the base (100), and an output end of the conveying mechanism penetrates into the base (100) through the avoiding opening (102) and aligns the output opening (221) of the conveying mechanism with the inlet of the discharging channel (101).

5. The weighing machine according to claim 1, wherein the suspended weighing assembly (200) comprises a weighing frame (240), the weighing frame (240) being arranged in a weighing area of the weighing unit (210), the conveying mechanism being arranged on the weighing frame (240), and the hopper (230) being arranged above the weighing frame (240), and the discharging opening (231) of the hopper (230) being aligned with an input opening (222) of the conveying mechanism.

6. The weighing machine according to claim 5, wherein the conveying mechanism is a screw conveying mechanism, the screw conveying mechanism comprising a rotation driving unit (250), a screw (260) and a barrel (270), the barrel (270) being arranged on the weighing frame (240), the screw (260) being rotatably arranged in the barrel (270), the rotation driving unit (250) being connected to the screw (260), one end of the barrel (270) being provided with the input opening (222), and the other end of the barrel (270) being provided with the output opening (221).

7. The weighing machine according to claim 6, wherein The end of the output port (221) of the barrel (270) is inserted into the base (100) and located above the inlet of the discharge channel (101), and the output port (221) faces downward and corresponds to the inlet of the discharge channel (101).

8. The scale according to claim 6, wherein, The screw rod (260) gradually lifts along the conveying direction with the barrel (270).

9. The scale according to claim 8, wherein, The lifting angle a of the screw rod (260) and the barrel (270) is 2° to 10°.

10. The scale according to claim 1, wherein, The top of the base (100) is provided with a top maintenance opening (104) corresponding to the inlet of the discharge channel (101).

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