Hardware packing and quantifying device

Abstract

The present application relates to a kind of hardware packing ration equipment, including feed hopper, switch mechanism is equipped in feed hopper, switch mechanism is divided into upper and lower two parts, respectively, as main bin and bottom bin, with the space in feed hopper;Bottom bin outlet is equipped with weighing mechanism below, weighing mechanism is equipped with discharge mechanism below;The structure of switch mechanism is as follows: including several rollers, roller includes roll shaft and three side plates around roll shaft, three side plates are sequentially connected to form right triangular prism structure, and the side edge of right triangular prism structure is equipped with baffle;Several rollers are distributed along horizontal direction parallelly and interval, and can be rotated synchronously under the drive of power mechanism, so that switch mechanism opens or closes, to connect or cut off main bin and bottom bin.The present application solves the technical problem that weighing and packing machine cannot run due to the damage of weighing mechanism caused by large amount of feeding, realizes the automatic continuous weighing and packing operation of hardware under tonnage level feeding condition.

Description

Technical Field

[0001] This invention relates to the field of hardware packaging technology, and in particular to a hardware packaging quantitative device. Background Technology

[0002] After batch processing, hardware parts such as screws, nuts, and washers are typically received at the output end of the batch processing production line using a large-capacity receiving frame. The receiving frame is heavy and requires a crane to transport it to the weighing and packaging station for manual weighing and packaging into small packages weighing 1-8 kg. Manual weighing and packaging is not only inefficient but also results in inconsistent product weight. If machine weighing and packaging is used, considering continuous operation, a feed rate of several tens of kilograms is needed to continuously package the 1-8 kg packages. However, the amount of material transported to the weighing and packaging station by the crane is often 1-2 tons. If the material is fed directly at once, the weighing mechanism of conventional packaging machines cannot handle the load, causing the machine to malfunction. Feeding in stages, with each stage only yielding several tens of kilograms, requires repeated feeding, is cumbersome, and results in low production efficiency. Summary of the Invention

[0003] In response to the shortcomings of existing technologies, this invention provides a hardware parts packaging and quantitative equipment, which aims to achieve automatic continuous weighing and packaging operations under heavy material feeding conditions.

[0004] The technical solution adopted in this invention is as follows: A hardware parts packaging and quantitative equipment includes a feeding hopper, a switching mechanism inside the feeding hopper, the switching mechanism dividing the space inside the feeding hopper into upper and lower parts, namely a main material bin and a bottom material bin; a weighing mechanism is provided below the outlet of the bottom material bin, and a discharging mechanism is provided below the weighing mechanism; The switching mechanism has the following structure: it includes a power mechanism and several rollers. Each roller includes a roller shaft and three side plates that surround the roller shaft. The three side plates are connected in sequence to form a regular triangular prism structure. The side edges of the regular triangular prism structure are provided with baffles. The plurality of rollers are distributed in parallel along the horizontal direction and can rotate synchronously under the drive of the power mechanism, so as to open or close the switching mechanism, thereby connecting or separating the main hopper and the bottom hopper. When the switching mechanism is closed, all rollers rotate to the first state: one side plate of the roller serves as a support plate, which is in a horizontal position; the baffles on both sides of the support plate are inclined outward from bottom to top, and the two baffles between the support plates of two adjacent rollers form a closed structure, which seals the gap between the two rollers, thereby separating the main hopper and the bottom hopper; When the switching mechanism is opened, all rollers rotate to the second state: the support plate tilts, and a channel is formed between two adjacent rollers, thereby connecting the main hopper and the bottom hopper.

[0005] The further technical solution is as follows: The included angle between each side plate on the roller and the baffle connected thereto is 150°; the second state is the first state in which the roller rotates clockwise by 15° to 45°.

[0006] The width of the channel is 50-70 mm.

[0007] It also includes a sensing device for detecting the height or weight of the material in the bottom hopper; The sensing device is connected to the control module to control the power mechanism, which in turn drives the switching mechanism to open or close.

[0008] The sensing device includes several photoelectric switches, which are distributed in the same horizontal plane in the bottom hopper.

[0009] The weighing mechanism includes a vibrating conveyor plate, a vibrating conveyor channel, and a weighing hopper; The inlet of the vibrating conveyor is connected to the outlet of the bottom hopper. One or more vibrating conveying channels are provided below the outlet of the vibrating conveyor, and the discharge volume of one or more vibrating conveying channels per unit time is less than the discharge volume of the vibrating conveyor per unit time. The weighing hopper is connected below the outlet of the vibrating conveyor plate and the vibrating conveyor channel, and a weighing sensor is installed on the weighing hopper.

[0010] The discharge section of the vibrating conveyor channel is V-shaped.

[0011] The discharge mechanism includes a discharge hopper and a buffer platform; The discharge hopper inlet is connected below the weighing hopper outlet, and the buffer platform is located below the discharge hopper outlet; The buffer platform includes a support plate, one side of which is rotatably connected to a vertical mounting surface, and the bottom of the other side of the support plate is connected to a horizontal mounting surface via an elastic element.

[0012] The baffle is made of rubber, and the roller body is provided with a slot for cooperating with the baffle. The baffle and the roller body are connected by fasteners.

[0013] The power mechanism includes a servo motor and a synchronous belt or synchronous chain. The rollers of the plurality of rollers are sequentially connected by the synchronous belt or synchronous chain, and the roller of one of the rollers is poweredly connected to the output end of the servo motor.

[0014] The beneficial effects of this invention are as follows: This invention allows for large-volume feeding from the main hopper and small-volume feeding from the bottom hopper via a switching mechanism, preventing overload and damage to the weighing mechanism. The switching mechanism employs several triangular prism rollers with baffles, satisfying the heavy load-bearing requirements while allowing for small-volume feeding by controlling the roller rotation. The design is rational, ingenious, and easy to operate.

[0015] The weighing mechanism of this invention, through the setting of a vibrating weighing pan and a vibrating weighing channel, meets the requirements for coarse and fine graded weighing, and is particularly suitable for the characteristics of large weight and large inertia of hardware parts, thereby improving weighing accuracy and enhancing the consistency of packaging quality.

[0016] Other features and advantages of the invention will be set forth in the following description or may be learned by practicing the invention. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present invention.

[0018] Figure 2 This is a schematic diagram of the switching principle of the switching mechanism according to an embodiment of the present invention.

[0019] Figure 3 This is a top view of the mounting structure of the switching mechanism according to an embodiment of the present invention (the switching mechanism is in the closed state).

[0020] Figure 4 This is a side view of an embodiment of the present invention.

[0021] Figure 5 for Figure 1 Enlarged view of section A.

[0022] In the diagram: 1. Main hopper; 2. Bottom hopper; 3. Roller; 4. Baffle; 5. Vibrating conveyor disc; 6. Vibrating conveyor trough; 7. Weighing hopper; 8. Discharge hopper; 9. Support plate; 10. Elastic element; 11. Servo motor; 12. Synchronous belt or synchronous chain; 13. Second vibrator; 14. Weighing sensor; 15. First vibrator; 16. Hinge; 17. Gap; 18. Channel; 31. Bearing plate; 61. Vertical plate; 62. Base plate; 201. Mounting position. Detailed Implementation

[0023] The specific embodiments of the present invention are described below with reference to the accompanying drawings.

[0024] See Figure 1The hardware packaging and quantitative equipment of this embodiment includes a feeding hopper, and a switching mechanism is provided inside the feeding hopper. The switching mechanism divides the space inside the feeding hopper into upper and lower parts, namely the main material bin 1 and the bottom material bin 2. The bottom material bin 2 has a gate at its outlet, a weighing mechanism below it, and a discharge mechanism below the weighing mechanism. The structure of the switching mechanism is as follows: it includes a power mechanism and several rollers 3. Each roller 3 includes a roller shaft and three side plates around the roller shaft. The three side plates are connected in sequence to form a regular triangular prism structure. A baffle 4 is provided on the side edge of the regular triangular prism structure (i.e., at the position where two adjacent side plates are connected). Several rollers 3 are distributed in parallel along the horizontal direction and can rotate synchronously under the drive of the power mechanism, so that the switching mechanism is opened or closed, thereby connecting or separating the main hopper 1 and the bottom hopper 2. See Figure 2 When the switching mechanism is closed, all rollers 3 rotate to the first state: one side plate of roller 3 serves as a support plate 31, which is in a horizontal position; the baffles 4 on both sides of the support plate 31 are inclined outward from bottom to top, and the two baffles 4 between the support plates 31 of two adjacent rollers 3 form a closed structure. The closed structure is inverted V-shaped, like a pointed hat, sealing the gap 17 between the two rollers 3, separating the main material bin 1 and the bottom material bin 2, so that the material in the main material bin 1 cannot fall into the bottom material bin 2; it can be understood that the gap between the two baffles constituting the closed structure is very small or fits very tightly to prevent the material from falling out; When the switching mechanism is opened, all rollers 3 move along... Figure 2 Rotate to the second state in the direction indicated by the middle arrow: the bearing plate 31 is tilted, and a channel 18 is formed between two adjacent rollers 3, thereby connecting the main material bin 1 and the bottom material bin 2. The material can fall from the main material bin 1 to the bottom material bin 2 in the direction indicated by the thick solid line arrow in the figure (clockwise direction).

[0025] In this embodiment, the switching mechanism divides the feed hopper into upper and lower parts. The main hopper 1 can be used to feed 1 to 2 tons of hardware parts at a time. When the drum rotates to the first state, the switching mechanism is closed. The supporting plate 31 and the closed structure constitute the bottom plate of the main hopper 1, which can be used to support the material. When the drum rotates to the second state, the switching mechanism is opened, and the material in the main hopper 1 falls into the bottom hopper 2 through the channel 18. When the required storage capacity of the bottom hopper 2 is met, the drum (which can rotate counterclockwise) rotates to the first state, and the switching mechanism closes again, stopping the material from falling.

[0026] Based on actual production needs, the storage capacity of the bottom hopper 2 is approximately ten to several tens of kilograms, which is sufficient to meet the needs of subsequent continuous weighing and packaging. This also prevents all the material in the main hopper 1 from falling onto the weighing mechanism and causing it to become crushed and unable to operate.

[0027] In this embodiment, the switching mechanism addresses the issue of the large weight of materials in the main hopper 1, which makes it difficult for ordinary switches to control the material discharge speed and amount. It employs a design structure combining a regular triangular prism roller with a baffle, resulting in a rational design and convenient operation. By optimizing the width of the channel 18 formed when the roller is opened, and by controlling the roller's rotation speed, direction, and rotation rhythm, precise control of the material discharge amount can be achieved. Compared to traditional switching structures, this effectively solves the problem of inaccurate material discharge control under significant gravity. Therefore, the switching mechanism in this embodiment effectively acts as a buffer, while the bottom hopper serves as a temporary storage and transition area.

[0028] As a preferred embodiment, the width of channel 18 is 50–70 mm.

[0029] As a preferred embodiment, the included angle α between each side plate on the roller 3 and the baffle 4 connected to it is 150°, that is, the width direction of the baffle 4 is consistent with the direction of the angle bisector of the equilateral triangle in the cross-section of the regular triangular prism.

[0030] As a preferred embodiment, the second state is the same as the first state, where the roller 3 rotates clockwise by 15° to 45°.

[0031] Alternatively, the baffle 4 is made of rubber, and the body of the roller 3 is provided with a slot for engaging with the baffle 4. The baffle 4 and the body of the roller 3 are connected by fasteners.

[0032] Preferably, the thickness of the baffle 4 is 6 to 8 mm; the length of the baffle 4 is the same as the length of the roller side plate; the width of the baffle 4 is 80 mm, of which the portion inside the slot is 30 mm and the portion outside the slot is 50 mm.

[0033] When the switching mechanism is closed, the closed structure is inverted V-shaped, and the baffle 4 is made of rubber, which serves as a buffer and provides flexible contact, preventing stress concentration caused by direct impact when feeding material into the main hopper.

[0034] The hardware packaging and metering equipment in this embodiment can control the start and stop of the power mechanism according to a set time interval, and combine this with the rotation direction control of the rollers to meet the rhythm of feeding material into the bottom hopper 2, allowing for continuous or intermittent feeding. Furthermore, control can also be achieved by setting up a sensing device to detect the height or weight of the material in the bottom hopper 2. This sensing device is connected to the control module to control the power mechanism, causing it to drive the switching mechanism to open or close.

[0035] The sensing device includes several photoelectric switches, which are distributed on the same horizontal plane in the bottom hopper 2. For example... Figure 4As shown, the bottom hopper 2 has an installation position 201 on its side wall for installing the photoelectric switch. Multiple photoelectric switches are installed on the same horizontal plane to identify the height of the material in the hopper. If the set height is reached, the switch mechanism is turned off to stop feeding; otherwise, feeding continues until the set height is met.

[0036] See Figure 1 and Figure 4 The weighing mechanism in this embodiment includes a vibrating conveyor plate 5, a vibrating conveyor channel 6, and a weighing hopper 7; The inlet of the vibrating conveyor 5 is connected below the outlet of the bottom hopper 2. One or more vibrating conveying channels 6 are provided below the outlet of the vibrating conveyor 5, and the discharge rate of one or more vibrating conveying channels 6 per unit time is less than the discharge rate of the vibrating conveyor 5 per unit time. The weighing hopper 7 is connected to the outlet of the vibrating conveyor plate 5 and the vibrating conveyor channel 6, and the weighing hopper 7 is equipped with a weighing sensor 14.

[0037] The purpose of this embodiment, which includes a vibrating conveyor plate 5 and a vibrating conveying channel 6, is to achieve graded weighing. The vibrating conveyor plate 5 performs coarse weighing, while the vibrating conveying channel 6 performs fine weighing. For example, if 500g of material needs to be conveyed to the weighing hopper 2, 450g is first conveyed by the vibrating conveyor plate 5, and then the conveying stops. Since the vibrating conveying channel 6 is located below the vibrating conveyor plate 5 and contains the remaining material, the remaining 50g is then conveyed to the weighing hopper 7, achieving accurate weighing. This design satisfies the structural characteristics of the hardware and prevents over-weighing due to inertia.

[0038] Understandable, such as Figure 4 As shown, the vibrating conveyor plate 5 and the vibrating conveyor channel 6 are set independently, and a certain gap is formed between them in the vertical direction. The discharge cross-section of the vibrating conveyor channel 6 is much smaller than the discharge cross-section of the vibrating conveyor plate 5. Most of the material discharged from the vibrating conveyor plate 5 falls into the weighing hopper 7, and a small portion falls into the vibrating conveyor channel 6.

[0039] Specifically, the vibrating conveyor plate 5 is inclined downwards from the inlet to the outlet, and multiple first vibrators 15 are provided at the bottom of the inlet end; the vibrating conveying channel 6 is inclined at a smaller angle from the inlet to the outlet than the vibrating conveyor plate 5, and a second vibrator 13 is provided at the bottom of the inlet end.

[0040] Preferably, the discharge cross-section of the vibrating conveyor trough 6 is V-shaped. For example... Figure 5 As shown, the vibrating conveyor channel 6 includes a V-shaped base plate 62 and vertical plates 61 arranged on both sides of the base plate 62. This channel structure can effectively prevent the material from being discharged too quickly and is conducive to accurate weighing.

[0041] It is understood that the outlet of weighing hopper 7 can be opened or closed. When the required weighing weight is met, the outlet of weighing hopper 7 opens to discharge material to the subsequent discharge mechanism.

[0042] See Figure 1 and Figure 4 The discharge mechanism in this embodiment includes a discharge hopper 8 and a buffer platform. The inlet of the discharge hopper 8 is connected to the outlet of the weighing hopper 7, and the buffer platform is located below the outlet of the discharge hopper 8. The buffer platform includes a support plate 9, one side of which is rotatably connected to a vertical mounting surface, and the bottom of the other side of the support plate 9 is connected to a horizontal mounting surface via an elastic element 10.

[0043] In this embodiment, the support plate 9 is used to hold the packaging bag, and its opening is aligned with the outlet of the hopper 8. Since the hardware is heavy, it is easy to impact the packaging bag when unloading. If the support plate 9 is set as a conventional fixed structure, the packaging bag is easy to be knocked to the ground. However, in this embodiment, the support plate 9 provides cushioning through the elastic member 10 and can rotate relative to the vertical mounting surface, thereby preventing the packaging bag from falling.

[0044] One side of the support plate 9 can be rotatably connected to the vertical mounting surface via hinge 16.

[0045] The elastic element 10 can be a compression spring.

[0046] See Figure 3 The power mechanism includes a servo motor 11 and a synchronous belt or chain 12. Several rollers 3 are sequentially connected via the synchronous belt or chain 12, with one roller 3's roller connected to the output of the servo motor 11. This power mechanism enables synchronous forward and reverse rotation of the rollers 3.

[0047] In summary, this invention allows for large-volume feeding through the main hopper and small-volume feeding through the bottom hopper via a switching mechanism, preventing damage to the weighing mechanism due to overload. The switching mechanism employs several triangular prism rollers with baffles, satisfying the heavy load-bearing requirements while allowing for small-volume feeding by controlling the roller rotation. The structure is ingeniously designed and easy to operate.

[0048] It will be understood by those skilled in the art that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A hardware parts packaging and quantitative control device, characterized in that, Includes a feeding hopper, the feeding hopper is equipped with a switching mechanism, the switching mechanism divides the space inside the feeding hopper into upper and lower parts, namely the main material bin (1) and the bottom material bin (2); a weighing mechanism is provided below the outlet of the bottom material bin (2), and a discharge mechanism is provided below the weighing mechanism; The structure of the switching mechanism is as follows: it includes a power mechanism and several rollers (3). The rollers (3) include a roller shaft and three side plates around the roller shaft. The three side plates are connected in sequence to form a regular triangular prism structure. The side edges of the regular triangular prism structure are provided with baffles (4). The plurality of rollers (3) are distributed in parallel along the horizontal direction and can rotate synchronously under the drive of the power mechanism, so that the switching mechanism is opened or closed, thereby connecting or separating the main silo (1) and the bottom silo (2); When the switching mechanism is closed, all rollers (3) rotate to the first state: one side plate of the roller (3) serves as a bearing plate (31), which is in a horizontal position; the baffles (4) on both sides of the bearing plate (31) are inclined outward from bottom to top, and the two baffles (4) between the bearing plates (31) of two adjacent rollers (3) form a closed structure, which closes the gap (17) between the two rollers (3), thereby separating the main silo (1) and the bottom silo (2). When the switching mechanism is opened, all rollers (3) rotate to the second state: the bearing plate (31) tilts, and a channel (18) is formed between two adjacent rollers (3), thereby connecting the main hopper (1) and the bottom hopper (2).

2. The hardware parts packaging and quantitative equipment according to claim 1, characterized in that, The included angle between each side plate on the roller (3) and the baffle (4) connected thereto is 150°; the second state is the first state in which the roller (3) rotates clockwise by 15° to 45°.

3. The hardware parts packaging and quantitative equipment according to claim 1, characterized in that, The width of the channel (18) is 50-70 mm.

4. The hardware parts packaging and quantitative equipment according to claim 1, characterized in that, It also includes a sensing device for detecting the height or weight of the material in the bottom hopper (2); The sensing device is connected to the control module to control the power mechanism, which in turn drives the switching mechanism to open or close.

5. The hardware parts packaging and quantitative equipment according to claim 4, characterized in that, The sensing device includes several photoelectric switches, which are distributed in the same horizontal plane in the bottom hopper (2).

6. The hardware parts packaging and quantitative equipment according to claim 1, characterized in that, The weighing mechanism includes a vibrating conveyor plate (5), a vibrating conveyor channel (6), and a weighing hopper (7). The inlet of the vibrating conveyor (5) is connected to the outlet of the bottom hopper (2), and one or more vibrating conveying channels (6) are provided below the outlet of the vibrating conveyor (5), and the discharge volume of one or more vibrating conveying channels (6) per unit time is less than the discharge volume of the vibrating conveyor (5) per unit time. The weighing hopper (7) is connected to the outlet of the vibrating conveyor plate (5) and the vibrating conveyor channel (6), and a weighing sensor (14) is provided on the weighing hopper (7).

7. The hardware parts packaging and quantitative equipment according to claim 6, characterized in that, The discharge section of the vibrating conveying channel (6) is V-shaped.

8. The hardware parts packaging and quantitative equipment according to claim 6, characterized in that, The discharge mechanism includes a discharge hopper (8) and a buffer platform; The inlet of the discharge hopper (8) is connected to the outlet of the weighing hopper (7), and the buffer platform is located below the outlet of the discharge hopper (8); The buffer platform includes a support plate (9), one side of which is rotatably connected to a vertical mounting surface, and the bottom of the other side of the support plate (9) is connected to a horizontal mounting surface via an elastic element (10).

9. The hardware parts packaging and quantitative equipment according to claim 1, characterized in that, The baffle (4) is made of rubber, and the body of the roller (3) is provided with a slot for cooperating with the baffle (4). The baffle (4) and the body of the roller (3) are connected by fasteners.

10. The hardware parts packaging and quantitative equipment according to claim 1, characterized in that, The structure of the power mechanism includes a servo motor (11) and a synchronous belt or synchronous chain (12). The rollers of the plurality of rollers (3) are connected in sequence through the synchronous belt or synchronous chain (12). The roller of one of the rollers (3) is connected to the output end of the servo motor (11).

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