Hardware packaging and quantifying equipment

Abstract

The hardware packaging and quantifying equipment comprises a feeding hopper, a switching mechanism is arranged in the feeding hopper, and the space in the feeding hopper is divided into an upper part and a lower part by the switching mechanism, and the upper part and the lower part are a main material bin and a bottom material bin respectively; a weighing mechanism is arranged below an outlet of the bottom stock bin, and a discharging mechanism is arranged below the weighing mechanism. The switch mechanism structurally comprises a plurality of rollers, each roller comprises a rolling shaft and three side plates surrounding the rolling shaft, the three side plates are sequentially connected to form a regular triangular prism structure, and baffles are arranged on side edges of the regular triangular prism structure; the rollers are distributed in parallel at intervals in the horizontal direction and can be driven by the power mechanism to rotate synchronously, so that the switch mechanism is opened or closed, and the main bin and the bottom bin are communicated or separated. The technical problem that a weighing mechanism of an existing weighing and packing machine is damaged and cannot run due to the fact that the feeding amount is large is solved, and automatic and continuous weighing and packing operation of hardware under the tonnage-level feeding working condition is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of hardware packaging, in particular to a quantitative packaging device for hardware. Background Art

[0002] After batch processing of hardware such as screws, nuts, and gaskets, a large-volume material receiving frame is usually used to connect the materials to the output end of the batch processing production line. The receiving frame after receiving the materials is heavy, and it needs to be hoisted to the weighing and packaging position by a crane, and then manually weighed and packaged to pack the hardware into small packages ranging from 1 to 8 kg. Manual weighing and packaging is not only inefficient but also has poor consistency in the weight of the packaged products. If machine weighing and packaging is used, considering continuous operation, in order to meet the continuous packaging into small packages of 1 to 8 kg, the feed volume of several tens of kilograms needs to be maintained. However, the amount of material hoisted to the weighing and packaging position by the crane is often 1 to 2 tons. If the material is fed directly at one time, the weighing mechanism of the conventional baler in the prior art cannot withstand it, which will cause the machine to fail to operate. If the material is fed in batches, only several tens of kilograms can be fed each time, and repeated feeding is required, which is cumbersome to operate and has low production efficiency. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a hardware parts packaging quantitative equipment, the purpose of which is to achieve automatic continuous weighing and packaging operations under the condition of heavy weight feeding.

[0004] The technical solution adopted by the present invention is as follows:

[0005] A hardware packaging quantitative equipment comprises a feed hopper, wherein a switch mechanism is arranged in the feed hopper, wherein the switch mechanism divides the space in the feed hopper into an upper part and a lower part, which are a main silo and a bottom silo respectively; a weighing mechanism is arranged below the outlet of the bottom silo, and a discharging mechanism is arranged below the weighing mechanism;

[0006] The structure of the switch mechanism is as follows: it includes a power mechanism and a plurality of rollers, wherein the roller includes a roller shaft and three side plates surrounding the roller shaft, wherein the three side plates are connected in sequence to form a regular triangular prism structure, and a baffle is provided on the side edge of the regular triangular prism structure;

[0007] The plurality of rollers are parallelly spaced and distributed in the horizontal direction, and can rotate synchronously driven by the power mechanism to open or close the switch mechanism, thereby connecting or disconnecting the main silo and the bottom silo;

[0008] When the switch mechanism is turned on, all rollers rotate to the first state: one side plate of the roller serves as a bearing plate, which is in a horizontal position; the baffles on both sides of the bearing plate are inclined outward from bottom to top, and the two baffles between the bearing plates of two adjacent rollers form a closed structure, which closes the gap between the two rollers, thereby separating the main material bin and the bottom material bin;

[0009] When the switch mechanism is closed, all rollers rotate to the second state: the bearing plate is tilted, and a channel is formed between two adjacent rollers, so that the main bin and the bottom bin are connected.

[0010] Further technical solutions are:

[0011] The angle between each side plate on the drum and the baffle connected thereto is 150°; the second state is that the drum in the first state rotates clockwise by 15° to 45°.

[0012] The width of the channel is 50-70 mm.

[0013] Also included is a sensing device, the sensing device is used to detect the height or weight of the material in the bottom silo;

[0014] The sensing device is connected to the control module to control the power mechanism so as to drive the switch mechanism to open or close.

[0015] The sensing device comprises a plurality of photoelectric switches, and the plurality of photoelectric switches are distributed in the same horizontal plane in the bottom silo.

[0016] The weighing mechanism includes a vibrating conveying plate, a vibrating conveying channel and a weighing bucket;

[0017] The inlet of the vibrating conveyor plate is connected to the bottom of the bottom silo outlet, one or more vibrating conveying channels are arranged below the outlet of the vibrating conveyor plate, and the material discharge per unit time of the one or more vibrating conveying channels is less than the material discharge per unit time of the vibrating conveyor plate;

[0018] The weighing bucket is connected to the vibrating conveying plate and below the outlet of the vibrating conveying trough, and a weighing sensor is arranged on the weighing bucket.

[0019] The discharge cross section of the vibrating conveying channel is V-shaped.

[0020] The discharging mechanism includes a discharging hopper and a buffer table;

[0021] The discharge hopper inlet is butted below the weighing hopper outlet, and the buffer platform is arranged below the discharge hopper outlet;

[0022] The buffer platform comprises a support plate, one side of the support plate 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 through an elastic member.

[0023] The baffle is made of rubber material, and a slot for cooperating with the baffle is provided on the body of the roller. The baffle is connected to the roller body by a fastener.

[0024] The structure of the power mechanism includes a servo motor and a synchronous belt or a synchronous chain. The rollers of the plurality of rollers are sequentially connected through the synchronous belt or the synchronous chain, and the roller of one of the rollers is connected to the output end power of the servo motor.

[0025] The beneficial effects of the present invention are as follows:

[0026] The present invention meets the requirement of large-scale one-time feeding through the main silo, and discharges a small amount of material from the bottom silo through the switch mechanism, thereby preventing the weighing mechanism from being damaged by overload. The switch mechanism of the present invention adopts a plurality of rollers with regular triangular prism structures with baffles, which can meet the large load bearing requirements while realizing a small amount of material discharge by controlling the rotation of the rollers. The structural design is reasonable and ingenious, and the operation is convenient.

[0027] The weighing mechanism of the present invention meets the requirements of coarse and fine weighing by setting a vibrating weighing plate and a vibrating weighing channel, is particularly suitable for the characteristics of heavy weight and large inertia of hardware, improves weighing accuracy, and improves the consistency of packaging quality.

[0028] Other features and advantages of the present invention will be set forth in the following description or may be learned by practicing the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the three-dimensional structure of an embodiment of the present invention.

[0030] Figure 2 Schematic diagram of the switching principle of the switch mechanism according to an embodiment of the present invention.

[0031] Figure 3 FIG. 1 is a top view of the mounting structure of the switch mechanism according to an embodiment of the present invention (the switch mechanism is in a closed state).

[0032] Figure 4 It is a side view of an embodiment of the present invention.

[0033] Figure 5 for Figure 1 Enlarged view of part A in the middle.

[0034] In the figure: 1. main silo; 2. bottom silo; 3. roller; 4. baffle; 5. vibrating conveyor plate; 6. vibrating conveyor trough; 7. weighing bucket; 8. discharge hopper; 9. support plate; 10. elastic member; 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. bottom plate; 201. installation position. DETAILED DESCRIPTION

[0035] The specific implementation of the present invention is described below with reference to the accompanying drawings.

[0036] See also Figure 1 The hardware packaging quantitative equipment of this embodiment includes a feed hopper, a switch mechanism is provided in the feed hopper, and the switch mechanism divides the space in the feed hopper into an upper part and a lower part, which are respectively a main silo 1 and a bottom silo 2; a gate is provided at the outlet of the bottom silo 2, a weighing mechanism is provided below the gate, and a discharging mechanism is provided below the weighing mechanism;

[0037] The structure of the switch mechanism is as follows: it includes a power mechanism and a plurality of rollers 3, the roller 3 includes a roller shaft and three side plates surrounding the roller shaft, the three side plates are connected in sequence to form a regular triangular prism structure, and a baffle 4 is provided on the side edge of the regular triangular prism structure (i.e., the position where two adjacent side plates are connected);

[0038] A plurality of rollers 3 are arranged in parallel and spaced apart in the horizontal direction, and can rotate synchronously driven by the power mechanism to open or close the switch mechanism, thereby connecting or disconnecting the main silo 1 and the bottom silo 2;

[0039] See also Figure 2 When the switch mechanism is turned on, 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 is in an inverted V shape, closing the gap 17 between the two rollers 3 like a pointed hat, 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 therefrom;

[0040] When the switch mechanism is closed, all rollers 3 move along Figure 2 Rotate to the second state in the direction indicated by the middle arrow: the supporting plate 31 is tilted, and a channel 18 is formed between two adjacent rollers 3, so that the main silo 1 and the bottom silo 2 are connected, and the material can fall from the main silo 1 to the bottom silo 2 in the direction indicated by the thick solid arrow in the figure (clockwise).

[0041] In this embodiment, the switch mechanism is used to separate the feed hopper into two parts, upper and lower. The main bin 1 can be used to feed 1-2 tons of hardware at one time. The drum rotates to the first state, the switch mechanism is closed, and the bearing plate 31 and the closed structure constitute the bottom plate of the main bin 1, which can be used to hold the material. When the drum rotates to the second state, the switch mechanism is opened, and the material in the main bin 1 falls to the bottom bin 2 through the channel 18. When the required storage volume of the bottom bin 2 is met, the drum (can be counterclockwise) rotates to the first state, the switch mechanism is closed again, and the material dropping stops.

[0042] According to actual production needs, the storage capacity of the bottom silo 2 is about ten to several dozen kilograms, which can meet the needs of subsequent continuous weighing and packaging. At the same time, it prevents all the materials in the main silo 1 from falling into the weighing mechanism, causing the equipment to be crushed and unable to operate.

[0043] The switch mechanism of this embodiment takes into account the problem that the material weight in the main silo 1 is large, which makes it difficult for ordinary switches to control the material drop speed and the amount of material dropped. The switch mechanism of this embodiment adopts a regular triangular prism-type roller combined with a baffle design structure, which is reasonable in design and easy to operate. The amount of material dropped can be accurately controlled by optimizing the width of the channel 18 formed when it is opened, and combining the control of the speed, direction and rotation rhythm of the roller. Compared with the traditional switch structure, it effectively solves the problem that the material drop cannot be accurately controlled under the action of large gravity. Therefore, the switch mechanism of this embodiment actually plays a buffering role, and the bottom silo actually plays a temporary storage and transition role.

[0044] As a preferred embodiment, the width of the channel 18 is 50-70 mm.

[0045] As a preferred embodiment, the angle α between each side plate on the drum 3 and the baffle 4 connected thereto is 150°, that is, the width direction of the baffle 4 is consistent with the direction of the angle bisector of the equilateral triangle of the cross section of the regular triangular prism.

[0046] As a preferred embodiment, the second state is that the drum 3 in the first state rotates clockwise by 15° to 45°.

[0047] As an optional method, the baffle 4 is made of rubber material, and a slot for cooperating with the baffle 4 is provided on the body of the drum 3, and the baffle 4 is connected to the body of the drum 3 by fasteners.

[0048] Preferably, the thickness of the baffle 4 is 6 to 8 mm; the length of the baffle 4 is consistent with the length of the roller side plate; the width of the baffle 4 is 80 mm, of which the part located in the slot is 30 mm and the part located outside the slot is 50 mm.

[0049] When the switch mechanism is closed, the closed structure is in an inverted V shape, and the baffle 4 is made of rubber material, which has the effect of buffering and flexible contact, thereby preventing stress concentration caused by direct impact when unloading materials into the main silo.

[0050] The hardware packaging quantitative equipment of this embodiment can control the start and stop of the power mechanism according to the set time interval, and combine the rotation direction control of the drum to meet the rhythm of feeding into the bottom silo 2, and feed continuously or intermittently. In addition, it can also be controlled by setting a sensing device, which is used to detect the height or weight of the material in the bottom silo 2. The sensing device is connected to the control module to control the power mechanism to drive the switch mechanism to open or close.

[0051] The sensing device includes a plurality of photoelectric switches, which are distributed in the same horizontal plane in the bottom silo 2. Figure 4 As shown, a mounting position 201 is provided on the side wall of the bottom silo 2 for installing the photoelectric switch. Multiple photoelectric switches are installed on the same horizontal plane to identify the height of the material in the silo. If the set height is reached, the switch mechanism is closed to stop unloading, otherwise the unloading continues until the set height is met.

[0052] See also Figure 1 and Figure 4 , the weighing mechanism of this embodiment includes a vibrating conveying plate 5, a vibrating conveying channel 6 and a weighing bucket 7;

[0053] The inlet of the vibrating conveyor plate 5 is connected to the bottom of the outlet of the bottom silo 2, and one or more vibrating conveying channels 6 are arranged below the outlet of the vibrating conveyor plate 5, and the discharge amount per unit time of the one or more vibrating conveying channels 6 is less than the discharge amount per unit time of the vibrating conveyor plate 5;

[0054] The weighing bucket 7 is docked below the outlet of the vibrating conveying plate 5 and the vibrating conveying trough 6 , and a weighing sensor 14 is provided on the weighing bucket 7 .

[0055] The purpose of setting the vibrating conveyor plate 5 and the vibrating conveyor trough 6 in this embodiment is to achieve graded weighing. The vibrating conveyor plate 5 performs rough weighing, and the vibrating conveyor trough 6 performs fine weighing. For example, if 500g of material needs to be conveyed to the weighing bucket 2, 450g is first vibrated and conveyed through the vibrating conveyor plate 5, and then the conveying is stopped. Since the vibrating conveyor trough 6 is located below the vibrating conveyor plate 5, the material is contained in it, and then the vibrating conveyor trough 6 is used to convey the remaining 50g to the weighing bucket 7 to achieve accurate weighing. This design method meets the structural characteristics of hardware and can prevent multiple weighing due to inertia.

[0056] It is understandable that Figure 4 As shown, the vibrating conveyor plate 5 and the vibrating conveyor trough 6 are independently arranged, and a certain gap is formed between the two in the vertical direction. The discharge cross-section of the vibrating conveyor trough 6 is much smaller than the discharge cross-section of the vibrating conveyor plate 5. Most of the discharge from the vibrating conveyor plate 5 falls into the weighing bucket 7, and a small part can fall into the vibrating conveyor trough 6.

[0057] Specifically, the vibrating conveying plate 5 is inclined downward from the inlet to the outlet, and a plurality of first vibrators 15 are provided at the bottom of the inlet end; the vibrating conveying channel 6 is inclined at an angle smaller than the vibrating conveying plate 5 from the inlet to the outlet, and a second vibrator 13 is provided at the bottom of the inlet end.

[0058] Preferably, the discharge cross section of the vibrating conveying channel 6 is V-shaped. Figure 5As shown, the vibrating conveying channel 6 includes a V-shaped bottom plate 62 and vertical plates 61 arranged on both sides of the bottom plate 62. This channel structure can effectively prevent the material from being discharged too quickly, which is conducive to accurate weighing.

[0059] It is understandable that the outlet of the weighing hopper 7 can be opened or closed. When the required weighing weight is met, the outlet of the weighing hopper 7 is opened to discharge the material to the subsequent discharging mechanism.

[0060] See also Figure 1 and Figure 4 The discharging mechanism of this embodiment includes a discharge hopper 8 and a buffer table, the inlet of the discharge hopper 8 is docked below the outlet of the weighing hopper 7, and the buffer table is arranged below the outlet of the discharge hopper 8;

[0061] The buffer platform includes a support plate 9 , one side of the support plate 9 is rotatably connected to the vertical mounting surface, and the bottom of the other side of the support plate 9 is connected to the horizontal mounting surface through an elastic member 10 .

[0062] The support plate 9 of this embodiment is used to place the packaging bag, and its opening is aligned with the outlet of the hopper 8. Due to the heavy weight of the hardware, the packaging bag is easily impacted when the material is discharged. If the support plate 9 is set as a conventional fixed structure, the packaging bag is easily smashed and falls to the ground. However, the support plate 9 of this embodiment provides a buffer through the elastic member 10, and can rotate relative to the vertical mounting surface, thereby preventing the packaging bag from falling.

[0063] One side of the support plate 9 can be rotatably connected to the vertical mounting surface through a hinge 16 .

[0064] The elastic member 10 may specifically be a compression spring.

[0065] See also Figure 3 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 sequentially connected through the synchronous belt or synchronous chain 12, and the roller of one of the rollers 3 is connected to the output end of the servo motor 11. The synchronous forward and reverse rotation of the roller 3 can be achieved through the power mechanism.

[0066] In summary, the present invention meets the requirement of large-scale one-time feeding through the main silo, and discharges a small amount of material from the bottom silo through the switch mechanism, thereby preventing the weighing mechanism from being damaged by overload. The switch mechanism of the present invention adopts a plurality of rollers with regular triangular prism structures with baffles, which can meet the large load-bearing requirements while realizing a small amount of material discharge by controlling the rotation of the rollers. The structural design is reasonable and ingenious, and the operation is convenient.

[0067] Those skilled in the art can understand that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions recorded in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A quantitative packaging equipment for hardware parts, characterized in that: It comprises a feed hopper, wherein a switch mechanism is provided in the feed hopper, wherein the switch mechanism divides the space in the feed hopper into an upper part and a lower part, which are respectively a main material bin (1) and a bottom material bin (2); a weighing mechanism is provided below the outlet of the bottom material bin (2), and a discharging mechanism is provided below the weighing mechanism; The structure of the switch mechanism is as follows: it comprises a power mechanism and a plurality of rollers (3); the roller (3) comprises a roller shaft and three side plates surrounding 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 edges of the regular triangular prism structure; The plurality of rollers (3) are arranged in parallel and at intervals in the horizontal direction, and can rotate synchronously under the drive of the power mechanism, so that the switch mechanism is opened or closed, thereby connecting or disconnecting the main material bin (1) and the bottom material bin (2); When the switch mechanism is turned on, all the rollers (3) rotate to a first state: a 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, and the closed structure closes the gap (17) between the two rollers (3), thereby separating the main material bin (1) and the bottom material bin (2); When the switch mechanism is closed, all rollers (3) rotate to a second state: the carrying plate (31) tilts, and a channel (18) is formed between two adjacent rollers (3), thereby connecting the main material bin (1) and the bottom material bin (2).

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

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

4. The hardware packaging quantitative equipment according to claim 1 is characterized in that: It also includes a sensing device, which is used to detect the height or weight of the material in the bottom silo (2); The sensing device is connected to the control module to control the power mechanism so as to drive the switch mechanism to open or close.

5. The hardware packaging quantitative equipment according to claim 4 is characterized in that: The sensing device comprises a plurality of photoelectric switches, and the plurality of photoelectric switches are distributed in the same horizontal plane in the bottom silo (2).

6. The hardware packaging quantitative equipment according to claim 1 is characterized in that: The weighing mechanism comprises a vibrating conveying plate (5), a vibrating conveying channel (6) and a weighing bucket (7); The inlet of the vibrating conveying plate (5) is connected to the bottom of the outlet of the bottom silo (2), one or more vibrating conveying channels (6) are arranged below the outlet of the vibrating conveying plate (5), and the material discharge per unit time of the one or more vibrating conveying channels (6) is less than the material discharge per unit time of the vibrating conveying plate (5); The weighing bucket (7) is docked below the outlet of the vibrating conveying plate (5) and the vibrating conveying channel (6), and a weighing sensor (14) is provided on the weighing bucket (7).

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

8. The hardware packaging quantitative equipment according to claim 6 is characterized in that: The discharging mechanism comprises a discharging hopper (8) and a buffer table; The inlet of the discharge hopper (8) is connected to the bottom of the outlet of the weighing hopper (7), and the buffer platform is arranged below the outlet of the discharge hopper (8); The buffer platform comprises a support plate (9), one side of the support plate (9) 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 member (10).

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

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

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