Weighing device with fine counterweight

Abstract

The utility model relates to the technical field of weighing, and provides a fine counterweight weighing device, which comprises a machine table, a blanking piece, a small piece, a large piece, a shaking piece, a counterweight piece, a weighing piece and a discharging piece, the discharging piece is installed on the top of the machine table and extends into the machine table. The large material piece and the small material piece are both located in the machine table and both communicated with the discharging piece. The weighing piece is mounted in the machine table; the counterweight piece is connected with the weighing end of the weighing piece and is positioned below the large material piece; the material shaking part is connected with the weighing part and located below the small material part, and a material shaking opening of the material shaking part extends to the position above the balance weight part. The discharging piece is located below the balance weight piece and communicates with the exterior of the machine table. The balance weight device has the effect of reducing the balance weight error.

Description

Technical Field

[0001] The present application relates to the field of weighing technology, and in particular to a weighing device with fine weight balancing. Background Art

[0002] In some industrial production processes such as plastic granulation, each product requires a fixed amount or weight of raw materials for manufacturing, so counterweight equipment is used. The raw materials have different sizes, so ordinary counterweight scales are difficult to provide accurate counterweight effects. Too much or too little material is often used, resulting in a lower yield of plastic products. Summary of the invention

[0003] In order to improve the above problems, the present application provides a weighing device with fine weight balance.

[0004] The present application provides a weighing device with fine weight balance, which adopts the following technical solution:

[0005] A weighing device with fine counterweight, comprising a machine platform, a material discharge piece, a small material piece, a large material piece, a material shaking piece, a counterweight piece, a weighing piece and a material discharge piece; the material discharge piece is installed on the top of the machine platform and extends into the machine platform; the large material piece and the small material piece are both located in the machine platform and are communicated with the material discharge piece; the weighing piece is installed in the machine platform; the counterweight piece is connected to the weighing end of the weighing piece and is located below the large material piece; the material shaking piece is connected to the weighing piece and is located below the small material piece, and the material shaking port of the material shaking piece extends to above the counterweight piece; the material discharge piece is located below the counterweight piece and is communicated with the outside of the machine platform.

[0006] By adopting the above technical scheme, the raw materials are distributed into large and small pieces by using the feeding piece. The large materials in the large pieces fall directly into the counterweight piece, and the small materials in the small pieces fall into the shaking piece. As the raw materials in the counterweight piece continue to increase, until the weighing end monitors that the weight is close to the preset weight, the large and small pieces are closed so that the large and small pieces no longer fall, and the shaking piece is opened. As the shaking piece shakes, the small materials inside are slowly shaken into the counterweight piece until the counterweight piece reaches the preset weight. Therefore, the raw materials are divided into large and small pieces for separate counterweighting until they are close to the preset weight and then the small materials are shaken off by vibration to fill the counterweight, so as to achieve the effect of fine counterweighting, reduce the error of raw material counterweighting, and make the subsequent product yield higher.

[0007] Optionally, the material shaking component includes a blanking part, a vibrating part and an elastic part; the vibrating part is installed at the bottom end of the blanking part; and the elastic part is installed at the bottom end of the vibrating part.

[0008] By adopting the above technical solution, the small material is transported to the blanking part. When the raw material in the counterweight is close to the preset weight, the vibrating part vibrates, and the elastic part increases the arc generated by the vibration, so that the blanking part is vibrated by the vibrating part and the elastic part, and the small material is vibrated and dropped into the counterweight, thereby performing fine counterweighting.

[0009] Optionally, an inserting portion is provided at the bottom end of the vibration portion, and the elastic portion is arranged around the inserting portion.

[0010] By adopting the above technical solution, the insertion rod is inserted into the elastic part to provide partial support to prevent the elastic part from being unable to bear the weight of the blanking part and the vibrating part. At the same time, it also alleviates the arc generated by the vibration when the elastic part is subjected to vibration to ensure that the blanking part will not tip over or fall.

[0011] Optionally, a plurality of the elastic parts are provided, and the number of the insertion parts is consistent with that of the elastic parts, and the two correspond one to one.

[0012] By adopting the above technical solution, the more elastic parts are set, the greater the supporting force provided, so that the blanking part can be installed on the weighing piece more stably, so that the blanking part will not fall down during vibration. At the same time, the number of the inserted parts is consistent with the elastic parts, which further improves the stability of the blanking part when it is subjected to vibration.

[0013] Optionally, the weighing element is provided with a limiting portion, and the limiting portion is engaged with the elastic portion.

[0014] By adopting the above technical solution, the elastic part is limited by the limiting part, so that when it is vibrated by the vibrating part, it will not move along the surface of the weighing piece due to the vibration, so as to ensure that the blanking port of the blanking part is always located above the counterweight, so that the blanking position is accurate.

[0015] Optionally, the counterweight component includes a counterweight part, an unfolding part and a driving part; a counterweight cavity is opened in the counterweight part, and a cavity opening is arranged at the bottom; the unfolding part is movably connected with the counterweight part, is located at the cavity opening, and covers the cavity opening; the driving part is connected with the unfolding part, and drives the unfolding part to cover the cavity opening or open the cavity opening.

[0016] By adopting the above technical solution, when the weighing end monitors that the weight of the counterweight part reaches the preset weight, the driving part drives the unfolding part to open the cavity opening of the counterweight cavity, so that the counterweighted raw material falls from the cavity opening to the discharge piece for collection.

[0017] Optionally, a partition is provided in the blanking piece, the partition is provided with a plurality of partition holes, and the partition holes are connected to the small piece.

[0018] By adopting the above technical solution, a number of separation holes are arranged on the separation net. The raw materials that can pass through the separation holes are small materials, and the raw materials that cannot pass through the separation holes are large materials. The large materials pass through the separation holes and fall from the large material pieces to the counterweight pieces, while the small materials pass through the separation holes and fall from the small material pieces to the shaking material pieces, so as to be separated and counterweighted.

[0019] Optionally, the partition is arranged at an angle.

[0020] By adopting the above technical solution, the partition has a certain inclination when located in the unloading piece, so that the large material that cannot pass through the partition hole can roll along the inclination to the large material piece, so as to ensure the stable transportation of the large material.

[0021] In summary, the present application includes at least one of the following beneficial technical effects:

[0022] 1. The raw materials are divided into large and small pieces by large and small pieces for separate weighting. When the weight is close to the preset weight, the small pieces are shaken off by vibration to fill the weight, so as to achieve the effect of fine weighting, reduce the weighting error of the raw materials, and make the subsequent product yield higher;

[0023] 2. Small materials are transported to the blanking part. When the raw materials in the counterweight are close to the preset weight, the vibrating part vibrates, and the elastic part increases the arc generated by the vibration, so that the blanking part is vibrated by the vibrating part and the elastic part, and the small materials are vibrated and dropped into the counterweight, thereby performing fine weighting;

[0024] 3. The more the number of elastic parts is set, the greater the supporting force provided, so that the blanking part can be installed on the weighing piece more stably, so that the blanking part will not fall down when vibrating. At the same time, the number of the insertion parts is consistent with the elastic parts, which further improves the stability of the blanking part when it is vibrated;

[0025] 4. The elastic part is limited by the limiting part, so that when it is vibrated by the vibrating part, it will not move along the surface of the weighing piece due to the vibration, so as to ensure that the blanking port of the blanking part is always located above the counterweight, so that the blanking position is accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic diagram of the three-dimensional structure of a weighing device in one embodiment of the present application;

[0027] Figure 2 is a schematic diagram of the three-dimensional structure of the shaking material part in some embodiments of the present application;

[0028] Figure 3 It is an enlarged structural schematic diagram of A in the present application;

[0029] Figure 4 is a schematic diagram of the three-dimensional structure of a counterweight in some embodiments of the present application;

[0030] Figure 5 is a schematic diagram of the cross-sectional structure of a blanking piece in some embodiments of the present application;

[0031] The marks in the accompanying drawings are: 1. Machine table, 2. Unloading part, 21. Partition part, 3. Small part, 4. Large part, 5. Shaking part, 51. Blanking part, 52. Vibrating part, 53. Elastic part, 54. Inserting part, 6. Counterweight part, 61. Counterweight part, 62. Unfolding part, 63. Driving part, 7. Weighing part, 71. Limiting part, 8. Discharging part, 9. Solenoid valve. DETAILED DESCRIPTION

[0032] The following is an explanation of the implementation of the present application by specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the information disclosed in the present application. The present application can also be implemented or applied through other different specific implementations, and the details in the present application can also be modified or changed in various ways according to different viewpoints and application systems without departing from the spirit of the present application. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0033] The following is a detailed description of the embodiments of the present application with reference to the accompanying drawings so that those skilled in the art can easily implement the present application. The present application can be embodied in a variety of different forms and is not limited to the embodiments described herein.

[0034] In the representations of the present application, the representations with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics represented in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. Moreover, the represented specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples represented in the present application and the features of the different embodiments or examples, unless they contradict each other.

[0035] In addition, the terms "first" and "second" are only used to indicate the target, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the representation of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0036] Throughout the specification, when a device is said to be "connected" to another device, this includes not only the case of "direct connection" but also the case of "indirect connection" by placing other elements therebetween. In addition, when a device is said to "include" a certain component, unless otherwise stated, it does not exclude other components, but means that other components may be included.

[0037] The following is combined with Figure 1 -Attached Figure 5 , further details of this application are given.

[0038] The embodiment of the present application discloses a weighing device with fine weight balance.

[0039] A weighing device with fine weight, referring to Figure 1 , including a machine 1, a feeding piece 2, a small material piece 3, a large material piece 4, a shaking piece 5, a counterweight piece 6, a weighing piece 7 and a discharging piece 8; the machine 1 is a box-type structure, and a placing table for placing a loading bag or a loading box and a control panel for numerical control are arranged on the outside. The control panel is used to select the required counterweight weight and provide control for each component, and an installation space is opened inside the machine 1, and the small material piece 3, the large material piece 4, the shaking piece 5, the counterweight piece 6, and the weighing piece 7 are all installed in the installation space.

[0040] The material discharge part 2 is installed on the top of the machine platform 1 and extends into the installation space. The material discharge part 2 can be a material discharge hopper for uniformly discharging the raw materials.

[0041] Both the large material piece 4 and the small material piece 3 are located in the installation space and are connected to the lower material piece 2. The large material piece 4 can adopt a large material conveying pipe or a large material conveying channel, and the small material piece 3 can adopt a small material conveying pipe or a small material conveying channel. The raw materials with larger size and heavier weight are conveyed through the large material piece 4, and the raw materials with smaller size and lighter weight are conveyed through the small material piece 3.

[0042] Among them, electric control valves are provided in the large material 4 and the small material 3. The electric control valves will close the drop openings of the large material 4 and the small material 3 under the command of the control panel, so that the large material 4 and the small material 3 will no longer drop for counterweighting.

[0043] The weighing piece 7 is installed on the machine 1 and is located in the installation space. The weighing piece 7 can be a weighing scale or a weighing platform equipped with a pressure sensor. The weighing piece 7 is provided with a weighing end. When the weighing end is subjected to pressure, the weight will change until the pressure on the weighing end is close to the weight pressure specified by the control panel.

[0044] The counterweight 6 is connected to the weighing end of the weighing piece 7 and is located below the large material 4. That is, when the raw materials transported by the large material 4 fall directly into the counterweight 6, when the weight in the counterweight 6 continues to increase, the weighing end monitors the weight of the counterweight 6 in real time.

[0045] The material shaking piece 5 is connected to the weighing piece 7 and is located below the small material piece 3. The raw materials transported by the small material piece 3 will directly fall onto the material shaking piece 5. The shaking piece has the effect of vibrating and shaking the materials, and the installation point of the material shaking piece 5 does not contact the weighing end. Therefore, when the material shaking piece 5 piles up small materials, it will not affect the detection accuracy of the weighing end.

[0046] The main function of the material shaking member 5 is to shake the raw materials into the material distribution member, so the material shaking opening of the material shaking member 5 extends above the counterweight member 6, so that when the material shaking member 5 vibrates, the raw materials can be shaken smoothly into the counterweight member 6.

[0047] The discharging piece 8 is located below the counterweight piece 6 and is connected to the outside of the machine 1 . The discharging piece 8 can be a discharging hopper. When the counterweighted raw materials are poured out from the counterweight piece 6 , they can be collected from the discharging piece 8 .

[0048] Specifically, the raw materials are distributed into large pieces 4 and small pieces 3 by means of the unloading piece 2. The large materials of the large pieces 4 fall directly into the counterweight piece 6, and the small materials in the small pieces 3 fall into the shaking piece 5. As the raw materials in the counterweight piece 6 continue to increase, until the weighing end detects that the weight is close to the predetermined weight, the electric control valve closes the large pieces 4 and the small pieces 3, so that the large pieces 4 and the small pieces 3 no longer fall, and opens the shaking piece 5. As the shaking of the shaking piece 5, the small materials inside are slowly shaken off into the counterweight piece 6 until the counterweight piece 6 reaches the predetermined weight. Therefore, the raw materials are divided into large and small materials for separate counterweighting until they are close to the preset weight and then the small materials are shaken off by vibration to fill the counterweight, so as to achieve the effect of fine counterweighting, reduce the error of raw material counterweighting, and make the subsequent product yield higher.

[0049] In some embodiments, reference Figure 2 As shown, the material shaking part 5 includes a blanking part 51, a vibrating part 52 and an elastic part 53; the vibrating part 52 is installed at the bottom end of the blanking part 51; the elastic part 53 is installed at the bottom end of the vibrating part 52, and the blanking part 51 can adopt a blanking hopper, which is horizontally arranged and has a blanking port on one side close to the counterweight 6, and the discharge point of the small material 3 is located above the blanking part 51.

[0050] The vibration part 52 may be a small vibration motor, which can drive the blanking part 51 to vibrate, thereby vibrating the small materials on the blanking part 51 out from the blanking opening.

[0051] The elastic part 53 can be a spring, and the elasticity generated by the spring can cooperate with the vibration part 52 to increase the vibration arc of the vibration effect, so that the small materials are easier to fall.

[0052] Specifically, the small material piece 3 conveys the small material to the blanking part 51. When the raw material in the counterweight 6 is close to the preset weight, the vibration part 52 vibrates, and the elastic part 53 increases the arc generated by the vibration, so that the blanking part 51 is vibrated by the vibration part 52 and the elastic part 53, and the small material is vibrated and dropped into the counterweight 6, thereby performing fine counterweighting.

[0053] For further reference, Figure 3 As shown, an insertion portion 54 is provided at the bottom end of the vibration portion 52, and the elastic portion 53 is arranged around the insertion portion 54. The insertion portion 54 can adopt an insertion rod, which is inserted into the elastic portion 53 to provide partial support to prevent the elastic portion 53 from being unable to bear the weight of the blanking portion 51 and the vibration portion 52. At the same time, it also alleviates the elastic portion 53 when it is subjected to vibration, reducing the arc generated by the vibration, so as to ensure that the blanking portion 51 will not tip over or fall.

[0054] Furthermore, a plurality of elastic portions 53 are provided, and the number of insertion portions 54 is consistent with that of the elastic portions 53, and the two correspond one to one. The more the number of elastic portions 53 is provided, the greater the supporting force provided, so that the blanking portion 51 can be more stably installed on the weighing piece 7, so that the blanking portion 51 will not fall down during vibration. At the same time, the number of insertion portions 54 is also consistent with that of the elastic portions 53, so as to further improve the stability of the blanking portion 51 when subjected to vibration. In this embodiment, the number of elastic portions 53 and insertion portions 54 are both 4 as an example.

[0055] Furthermore, the weighing piece 7 is provided with a limiting portion 71, which is clamped with the elastic portion 53. The limiting portion 71 can adopt a limiting column, which is clamped with one end of the elastic portion 53 away from the insertion portion 54, that is, when the elastic portion 53 is a spring, one end of the spring is inserted into the limiting column, and the other end of the insertion portion 54 is inserted therein.

[0056] The elastic part 53 is limited by the limiting part 71 so that it will not move along the surface of the weighing piece 7 due to the vibration of the vibrating part 52, thereby ensuring that the blanking opening of the blanking part 51 is always located above the counterweight 6, so that the blanking position is accurate.

[0057] In some embodiments, reference Figure 4 As shown, the counterweight 6 includes a counterweight portion 61, an unfolding portion 62 and a driving portion 63; a counterweight cavity is opened in the counterweight portion 61, and a cavity opening is arranged at the bottom. When the raw materials in the large material piece 4 and the shaking material piece 5 fall, the counterweight cavity receives them, and the cavity opening pours the prepared raw materials into the discharge piece 8, which collects them. The weighing end is connected to the counterweight portion 61 to monitor the weight of the counterweight portion 61.

[0058] The unfolding portion 62 is movably connected to the counterweight portion 61 and is located at the cavity opening and covers the cavity opening. The unfolding portion 62 may adopt two unfolding plates, and the two unfolding plates are respectively blocked at the cavity opening so that the counterweight cavity is in a closed state, and the unfolding portion 62 is movably connected to the counterweight portion 61 so that the unfolding portion 62 can be opened along the movable connection point to open the cavity opening, wherein the movable connection can be a hinge.

[0059] The driving part 63 is connected to the unfolding part 62 and drives the unfolding part 62 to cover or open the cavity opening. The driving part 63 can adopt a telescopic cylinder or a pneumatic cylinder, and utilize the telescopic characteristics of the telescopic cylinder to push the unfolding part 62 to close or open the cavity opening for material discharge collection.

[0060] Among them, the two unfolding plates used in the unfolding part 62 are both provided with a hinged frame, so that when one of the unfolding plates is driven by the driving part 63, the hinged frame is used to push the other unfolding plate to unfold or fold synchronously. Two driving parts 63 can also be provided, and the effect can also be achieved by driving the two unfolding plates separately. One is taken as an example in the figure.

[0061] Furthermore, when the unfolding portion 62 adopts two unfolding plates, one of the unfolding plates can be in a fixed connection state, and the other unfolding plate can be movably connected, so that the driving portion 63 drives the other unfolding plate to be close to the fixedly connected unfolding plate to close the cavity opening, and vice versa, it moves away from the fixedly connected unfolding plate to open the cavity opening.

[0062] Specifically, when the weighing end monitors that the weight of the counterweight part 61 reaches a preset weight, the driving part 63 drives the unfolding part 62 to open the cavity mouth of the counterweight chamber, so that the counterweighted raw material falls from the cavity mouth to the discharge piece 8 for collection. When counterweighting is required, the driving part 63 drives the unfolding part 62 to close the cavity mouth of the counterweight chamber, and then counterweighting can be carried out.

[0063] In some embodiments, reference Figure 5 As shown, a partition 21 is provided in the lower material 2, and a plurality of partition holes are opened in the partition 21, which are connected with the small material 3. The partition 21 can adopt a partition net, and a plurality of partition holes are provided on the partition net. The raw materials that can pass through the partition holes are small materials, and the raw materials that cannot pass through the partition holes are large materials. The large materials pass through the partition holes and fall from the large material 4 to the counterweight 6, and the small materials pass through the partition holes and fall from the small material 3 to the shaking material 5, so as to be separated and counterweighted.

[0064] Furthermore, the partition 21 is inclined so that the partition 21 has a certain inclination when located in the unloading piece 2, so that the large material that cannot pass through the partition hole can roll along the inclination to the large material piece 4 to ensure stable transportation of the large material.

[0065] Furthermore, the partition 21 is connected to a vibration motor, which can directly vibrate the partition 21 to prevent raw materials with sizes consistent with or similar to the aperture of the partition hole from being blocked in the partition hole, resulting in other small materials being unable to fall through the partition hole. Therefore, the vibration effect is provided by the vibration motor to vibrate the blocked raw materials and ensure the smoothness of the falling of small materials.

[0066] In some embodiments, several groups of counterweight mechanisms can be set up in the machine 1 at the same time. A counterweight piece 6, a material shaking piece 5 and a weighing piece 7 form a group. Large materials 4 and small materials 3 fall into each group of counterweight mechanisms synchronously to achieve synchronous counterweighting and improve production efficiency. This application takes two groups as an example.

[0067] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A weighing device with fine weight balance, characterized in that: The invention comprises a machine (1), a material discharge part (2), a small material part (3), a large material part (4), a material shaking part (5), a counterweight part (6), a weighing part (7) and a material discharge part (8); the material discharge part (2) is mounted on the top of the machine (1) and extends into the machine (1); the large material part (4) and the small material part (3) are both located in the machine (1) and are both connected to the material discharge part (2); the weighing part (7) is mounted in the machine (1); the counterweight part (6) is connected to the weighing end of the weighing part (7) and is located below the large material part (4); the material shaking part (5) is connected to the weighing part (7) and is located below the small material part (3), and the material shaking port of the material shaking part (5) extends to the top of the counterweight part (6); the material discharge part (8) is located below the counterweight part (6) and is connected to the outside of the machine (1).

2. A weighing device with fine weight balancing according to claim 1, characterized in that: The shaking member (5) comprises a blanking portion (51), a vibrating portion (52) and an elastic portion (53); the vibrating portion (52) is mounted on the bottom end of the blanking portion (51); and the elastic portion (53) is mounted on the bottom end of the vibrating portion (52).

3. A weighing device with fine weight balance according to claim 2, characterized in that: An inserting portion (54) is provided at the bottom end of the vibration portion (52), and the elastic portion (53) is arranged around the inserting portion (54).

4. A weighing device with fine weight balance according to claim 3, characterized in that: A plurality of the elastic parts (53) are provided, and the number of the insertion parts (54) is consistent with that of the elastic parts (53), and the two correspond one to one.

5. A weighing device with fine weight balancing according to claim 2 or 4, characterized in that: The weighing element (7) is provided with a limiting portion (71), and the limiting portion (71) is engaged with the elastic portion (53).

6. A weighing device with fine weight balance according to claim 1, characterized in that: The counterweight component (6) comprises a counterweight portion (61), an unfolding portion (62) and a driving portion (63); a counterweight cavity is provided in the counterweight portion (61), and a cavity opening is provided at the bottom; the unfolding portion (62) is movably connected to the counterweight portion (61), is located at the cavity opening, and covers the cavity opening; the driving portion (63) is connected to the unfolding portion (62), and drives the unfolding portion (62) to cover the cavity opening or open the cavity opening.

7. A weighing device with fine weight balance according to claim 1, characterized in that: A partition (21) is provided in the lower material piece (2), and a plurality of partition holes are provided in the partition part (21), and the partition holes are connected to the small material piece (3).

8. A weighing device with fine weight balance according to claim 7, characterized in that: The partition (21) is arranged in an inclined manner.

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