Screening device for metal nut production
By using a screening cylinder and ejection assembly in the screening device, the problem of incomplete screening in the production of metal nuts was solved, and the effective classification and collection of nuts was achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU CHENGAO METAL TECH CO LTD
- Filing Date
- 2025-05-23
- Publication Date
- 2026-06-02
AI Technical Summary
In existing screening devices used for metal nut production, large-sized nuts can easily clog the channels during the screening process, leading to incomplete screening.
A screening device was designed, which uses a screening cylinder and an ejector assembly. The screening cylinder is provided with multiple screening holes with progressively larger diameters and inclined grooves. The ejector assembly pushes the ejector block with an electric push rod to lift the blocked nut, ensuring that the nut passes smoothly through the screening holes and enters the collection frame through the inclined groove.
It achieves thorough screening of metal nuts, avoids large-sized nuts clogging the screening holes, ensures that nuts of different sizes are collected separately, and improves screening efficiency.
Smart Images
Figure CN224309003U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of metal nut production technology, and in particular relates to a screening device for metal nut production. Background Technology
[0002] During the production process of metal nuts, different sizes of corresponding parts will be produced due to different bolt types. These metal nuts of different sizes need to be screened after production.
[0003] Chinese utility model patent application number 202021761521.6 discloses a batch screening device for metal nut production, comprising a base, a discharge channel, a feed channel, and a counterweight. A connecting shaft is nested in the middle of the base, and a movable block is fixedly connected to the outer surface of the connecting shaft. The outer surface of the movable block has a receiving groove. A docking groove is formed on the inner side of the base and connects to the movable block. A discharge channel is formed at the lower end of the base, and a collection box is nested therein. A feed channel is provided at the upper end of the base. A conveyor belt is nested in the outer end of the connecting shaft, and an eccentric wheel is nested in the end of the conveyor belt. A second sliding groove is formed on the inner side of the upper end of the feed channel. This utility model patent allows nut workpieces of different sizes to be stably and evenly sorted and discharged along the three discharge channels of different diameters as the movable block uniformly moves the workpieces in a forward circumferential motion along the inner side of the base.
[0004] However, the aforementioned utility model patents still have some shortcomings:
[0005] During use, the aforementioned utility model patent uses the rotation of the movable block to drive the nut workpiece to move in a forward circumferential motion along the inner side of the base, allowing nuts of different sizes to enter discharge channels of different diameters. However, when the movable block passes through the first discharge channel, if a larger nut is at the bottom, it will block the discharge channel, preventing smaller nuts from passing through. Furthermore, when passing through the second discharge channel, smaller nuts will fall into that channel, resulting in incomplete screening. Utility Model Content
[0006] This utility model provides a screening device for the production of metal nuts, which aims to solve the problems mentioned in the background art.
[0007] This utility model is implemented as follows: a screening device for the production of metal nuts includes a screening box, a feeding hopper installed on the top of the screening box, an installation cavity opened inside the screening box, a screening cylinder installed in the installation cavity via a rotating assembly, a plurality of holding slots opened on the side wall of the screening cylinder, and at least two screening holes with progressively larger diameters opened sequentially along the rotation direction of the screening cylinder on the bottom side wall of the installation cavity, an ejection assembly installed in each screening hole, and an inclined groove opened on the side wall of each screening hole, each inclined groove connecting to a collection cavity via a straight groove, and a collection frame placed in the collection cavity.
[0008] Preferably, the ejection assembly includes an electric push rod, which is installed inside the screening hole, and an ejection block is installed at the telescopic end of the electric push rod. The top of the ejection block is set as an inclined surface with the same inclination as the adjacent inclined groove.
[0009] Preferably, the rotating assembly includes a rotating rod, the screening cylinder is sleeved and installed on the side wall of the rotating rod, one end of the rotating rod is rotatably installed on the inner wall of the mounting cavity, and the other end of the rotating rod passes through the side wall of the mounting cavity and is connected to the output shaft end of the motor, the motor is installed on the outer wall of the screening box.
[0010] Preferably, the top of the screening box is provided with a channel groove, the channel groove is connected to the holding trough, and the feed hopper is installed at the channel groove.
[0011] Preferably, the inclined trough and the screening hole are connected, and the inclined trough and the straight trough are opposite to each other, and the straight trough and the collection chamber are connected.
[0012] Preferably, the internal space of the collection frame is divided into collection slots of the same number as the sieve holes by a partition, and each collection slot is connected to a straight groove.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] 1. The telescopic end of the electric push rod pushes the ejector block to move vertically and enter the holding tank to remove the metal nut blocking the screening hole, ensuring that the metal nut of the appropriate size can pass through the screening hole, and avoiding large metal nuts blocking the screening hole, which would lead to incomplete screening.
[0015] 2. The top of the ejector block is set as an inclined surface. On the one hand, when the metal nut in the holding tank is lifted, the metal nut can move along the inclined surface to allow the corresponding type of metal nut to enter the screening hole. On the other hand, the metal nut that enters the screening hole can enter the inclined groove along the inclined surface. Attached Figure Description
[0016] Figure 1 This is a front view schematic diagram of the present utility model;
[0017] Figure 2 This is a front sectional view of the present invention;
[0018] Figure 3 In this utility model Figure 2 Enlarged view of point A;
[0019] In the picture:
[0020] 1. Screening box; 2. Installation cavity; 3. Screening cylinder; 4. Rotating assembly; 41. Rotating rod; 42. Motor; 5. Holding trough; 6. Screening hole; 7. Ejection assembly; 71. Electric push rod; 72. Ejection block; 8. Inclined chute; 9. Straight chute; 10. Collection cavity; 11. Collection frame; 12. Partition plate; 13. Collection trough; 14. Channel trough; 15. Feed hopper; 16. Installation door; 17. Storage door. Detailed Implementation
[0021] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.
[0022] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.
[0023] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0024] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0026] Please see Figure 1-3 This utility model provides a technical solution: a screening device for the production of metal nuts, including a screening box 1, a feeding hopper 15 installed on the top of the screening box 1, an installation cavity 2 opened inside the screening box 1, a screening cylinder 3 installed inside the installation cavity 2 via a rotating component 4, a plurality of holding slots 5 opened on the side wall of the screening cylinder 3, and at least two screening holes 6 with progressively larger diameters opened sequentially along the rotation direction of the screening cylinder 3 on the bottom side wall of the installation cavity 2, an ejection component 7 installed in each screening hole 6, and an inclined groove 8 opened on the side wall of each screening hole 6, each inclined groove 8 connecting to a collection cavity 10 via a straight groove 9, and a collection frame 11 placed inside the collection cavity 10.
[0027] Specifically, nine holding slots 5 are evenly distributed on the side wall of the screening cylinder 3, with a 40° interval between each two adjacent holding slots 5. The bottom three holding slots 5 each correspond to a screening hole 6. The screening cylinder 3 rotates 40° each time to perform screening. In addition, after each 40° rotation, the screening cylinder 3 pauses for a period of time so that the metal nuts in the holding slots 5 can be ejected and stirred by the ejector component 7, so as to prevent the large metal nuts from blocking the small-diameter screening holes 6.
[0028] The rotating component 4 controls the screening cylinder 3 to rotate clockwise, and the bottom of the mounting cavity 2 has three screening holes 6 with gradually increasing diameters from left to right, so as to screen the metal nuts by size.
[0029] The metal nuts to be screened enter the screening box 1 from the feed hopper 15. The screening cylinder 3 rotates under the action of the rotating component 4. The metal nuts to be screened enter the holding tank 5 in sequence. During the rotation, they are screened when they pass through the screening holes 6 of different diameters.
[0030] The ejector component 7 can eject and disturb the metal nuts in the holding tank 5, pushing away the large metal nuts blocking the inlet of the screening hole 6, allowing the corresponding type of metal nut to pass through the screening hole 6. The metal nuts that pass through the screening hole 6 then enter the collection frame 11 along the corresponding inclined groove 8 and straight groove 9 to complete the screening.
[0031] Furthermore, the ejector assembly 7 includes an electric push rod 71, which is installed inside the screening hole 6, and an ejector block 72 is installed at the telescopic end of the electric push rod 71. The top of the ejector block 72 is set as an inclined surface with the same inclination as the adjacent inclined groove 8.
[0032] Specifically, the telescopic end of the electric push rod 71 pushes the ejector block 72 to move vertically and enter the holding tank 5 to push away the metal nut blocking the screening hole 6, ensuring that the metal nut of the corresponding size can pass through the screening hole 6.
[0033] The top of the ejector block 72 is set as an inclined surface. On the one hand, when the metal nut in the holding groove 5 is lifted, the metal nut can move along the inclined surface. On the other hand, the metal nut entering the screening hole 6 can enter the inclined groove 8 along the inclined surface.
[0034] Furthermore, the rotating assembly 4 includes a rotating rod 41, and the screening cylinder 3 is sleeved and installed on the side wall of the rotating rod 41. One end of the rotating rod 41 is rotatably installed on the inner wall of the mounting cavity 2, and the other end of the rotating rod 41 passes through the side wall of the mounting cavity 2 and is connected to the output shaft end of the motor 42. The motor 42 is installed on the outer wall of the screening box 1.
[0035] Specifically, the output shaft of motor 42 controls the rotating rod 41 to drive the screening cylinder 3 to rotate, rotating 40° each time, and pausing for a period of time after each rotation before rotating again.
[0036] Furthermore, a channel groove 14 is provided on the top of the screening box 1, and the channel groove 14 is connected to the holding tank 5. The feed hopper 15 is installed at the channel groove 14.
[0037] Specifically, the metal nuts entering the feed hopper 15 pass through the channel groove 14 and fall onto the side wall of the screening cylinder 3. As the screening cylinder 3 rotates, the metal nuts enter the holding tank 5 in sequence, waiting for subsequent screening.
[0038] Furthermore, the inclined trough 8 is connected to the screening hole 6, and the inclined trough 8 is connected to the straight trough 9, which is connected to the collection chamber 10.
[0039] Specifically, the inclined groove 8 is inclinedly opened on the side wall of the screening hole 6, and a straight groove 9 is opened at its inclined bottom end. The screened metal nuts are guided into the collection chamber 10 through the straight groove 9.
[0040] Furthermore, the internal space of the collection frame 11 is divided into collection slots 13 in number, which are the same as the number of screening holes 6, by a partition 12, and each collection slot 13 is connected to a straight groove 9.
[0041] Specifically, the collection box 11 is divided into three collection slots 13 by two partitions 12. The bottom of the three straight slots 9 corresponds to the three collection slots 13 respectively, so as to collect and store the three types of metal nuts separately.
[0042] An installation door 16 is provided outside the screening hole 6 and on the outer wall of the screening box 1, and a storage door 17 is provided outside the collection chamber 10 and on the outer wall of the screening box 1.
[0043] It should be noted that the screening box 1 is also equipped with a battery and a control button. The battery supplies power to the motor 42 and the electric push rod 71, while the control button is used to control the operation of the motor 42 and the electric push rod 71.
[0044] The working principle and usage process of this utility model: After the utility model is installed, the workers pour the metal nuts to be screened into the feed hopper 15, which then pass through the channel groove 14 and fall onto the side wall of the screening cylinder 3.
[0045] The output shaft of motor 42 controls the rotating rod 41 to drive the screening cylinder 3 to rotate. Each rotation is 40°, and after each rotation, it pauses for a period of time before rotating again. During the rotation of the screening cylinder 3, metal nuts enter the holding tank 5 in sequence.
[0046] When the holding tank 5 rotates to the screening hole 6, the telescopic end of the electric push rod 71 pushes the ejector block 72 to move vertically and enter the holding tank 5, so as to push away the metal nut blocking the screening hole 6 and ensure that the metal nut of the corresponding size can pass through the screening hole 6.
[0047] The metal nut passing through the screening hole 6 falls into the corresponding collection tank 13 through the inclined groove 8 and the straight groove 9, thus completing the screening.
[0048] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A screening device for the production of metal nuts, characterized in that: The system includes a screening box (1), a feeding hopper (15) installed on the top of the screening box (1), an installation cavity (2) is provided inside the screening box (1), a screening cylinder (3) is installed inside the installation cavity (2) via a rotating assembly (4), a number of holding slots (5) are provided on the side wall of the screening cylinder (3), and at least two screening holes (6) with progressively larger diameters are sequentially provided on the bottom side wall of the installation cavity (2) along the rotation direction of the screening cylinder (3), an ejection assembly (7) is installed in each screening hole (6), and a sloping groove (8) is provided on the side wall of each screening hole (6), and each sloping groove (8) is connected to a collection cavity (10) via a straight groove (9), and a collection frame (11) is placed inside the collection cavity (10).
2. The screening device for metal nut production as described in claim 1, characterized in that: The ejector assembly (7) includes an electric push rod (71) installed in the screening hole (6), and an ejector block (72) is installed at the telescopic end of the electric push rod (71). The top of the ejector block (72) is set as an inclined surface with the same inclination as the adjacent inclined groove (8).
3. The screening device for metal nut production as described in claim 1, characterized in that: The rotating assembly (4) includes a rotating rod (41), and the screening cylinder (3) is sleeved and installed on the side wall of the rotating rod (41). One end of the rotating rod (41) is rotatably installed on the inner wall of the mounting cavity (2), and the other end of the rotating rod (41) passes through the side wall of the mounting cavity (2) and is connected to the output shaft end of the motor (42). The motor (42) is installed on the outer wall of the screening box (1).
4. The screening device for metal nut production as described in claim 1, characterized in that: The top of the screening box (1) is provided with a channel groove (14), the channel groove (14) is connected to the holding tank (5), and the feed hopper (15) is installed at the channel groove (14).
5. A screening device for producing metal nuts as described in claim 2, characterized in that: The inclined groove (8) is connected to the screening hole (6), and the inclined groove (8) is connected to the straight groove (9). The straight groove (9) is connected to the collection chamber (10).
6. The screening device for metal nut production as described in claim 1, characterized in that: The internal space of the collection frame (11) is divided into collection slots (13) with the same number as the sieve holes (6) by a partition (12), and each collection slot (13) is connected to a straight groove (9).