Screening and discharging device for screw production

Abstract

The utility model discloses a screening and blanking device for screw production, and relates to the field of screening and blanking devices, the screening and blanking device comprises a base, the upper wall of the base is fixedly connected with a first spring, the upper wall of the first spring is provided with a screening assembly, and the screening assembly comprises a screening frame fixedly connected with the upper wall of the first spring; a screening frame is fixedly connected to the outer wall of the base, a screen is fixedly connected to the outer wall of the screening frame, a fixing plate is fixedly connected to the position, located at the bottom of the screen, of the inner wall of the screening frame, a connecting plate is fixedly connected to the outer wall of the base, and an ejection assembly is arranged on the upper wall of the connecting plate. According to the screw screening device, the ejection assembly is arranged, so that in the process that the screening assembly screens screws, the screening frame which vibrates up and down can extrude the bottom plate through an electric extrusion block, the bottom plate drives an extrusion column to move upwards to be inserted into gaps of a screen plate, and the screws clamped into the gaps of a screen mesh are ejected out; therefore, the purpose of automatically cleaning the blocked screen can be achieved.

Description

Technical Field

[0001] The utility model relates to the field of screening material feeding devices, in particular to a screening material feeding device for screw production. Background Art

[0002] Screws are tools that use the physics and mathematical principles of the circular rotation of the inclined surface of an object and the friction force to gradually fasten objects and parts. Screws are a general term for fasteners and a daily colloquialism. Screws are indispensable industrial necessities in daily life: such as extremely small screws used in cameras, glasses, clocks, electronics, etc., general screws for televisions, electrical products, musical instruments, furniture, etc., as for engineering, construction, and bridges, large screws and nuts are used, and transportation equipment, airplanes, trams, cars, etc. use large and small screws. Screws need to be screened and unloaded during production. At present, linear screening machines are widely used on the market as screening and unloading devices for screw production. Linear screening machines use vibrators as vibration sources to throw materials on the screen and move forward in a straight line. The materials evenly enter the feed port of the screening machine from the feeder, and produce several specifications of overscreen and underscreen through multiple layers of screens, which are discharged from their respective outlets. It has low energy consumption, high output, simple structure, easy maintenance, fully enclosed structure, no dust spillage, automatic discharge, and is more suitable for assembly line operations.

[0003] However, in the actual screening process of this type of linear screening machine, due to the different sizes of screws, the screws often get stuck in the gaps of the screen and cause the screen to be blocked. Therefore, the blockage needs to be cleaned manually, which greatly reduces the efficiency of screw screening and feeding. Based on this, a screening and feeding device for screw production is provided, which can automatically clean the blocked screen. Utility Model Content

[0004] The utility model aims to provide a screening and feeding device for screw production in order to achieve the purpose of automatically cleaning a blocked screen.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a screening and unloading device for screw production, comprising a base, the upper wall of the base is fixedly connected to a first spring, the upper wall of the first spring is provided with a screening assembly, the screening assembly comprises a screening frame fixedly connected to the upper wall of the first spring, the outer wall of the screening frame is fixedly connected to a screen, the inner wall of the screening frame is located at the bottom of the screen and is fixedly connected to a fixing plate, the outer wall of the base is fixedly connected to a connecting plate, the upper wall of the connecting plate is provided with an ejection assembly, and the ejection assembly comprises:

[0006] A ball bearing is attached to the upper wall of the connecting plate, and the rotation of the ball bearing is connected to a lifting column that penetrates into the screening frame. The upper wall of the lifting column is fixedly connected to a bottom plate, and the upper wall of the bottom plate is fixedly connected to a plurality of extrusion columns.

[0007] As a further solution of the utility model: the upper wall of the fixing plate is provided with a lifting groove penetrating to the bottom wall of the fixing plate, and the diameter of the lifting groove matches the diameter of the extrusion column.

[0008] As a further solution of the utility model: a plurality of storage grooves are provided on the upper wall of the fixing plate at the side of the lifting groove, and the storage grooves are V-shaped structures when viewed from the right, and are used to collect screws that slide down from the lifting groove.

[0009] As a further solution of the utility model: an extrusion block is fixedly connected to the upper wall of the screening frame, and the height of the extrusion block matches the distance from the bottom plate to the inner wall of the screening frame, so as to realize extrusion of the bottom plate.

[0010] As a further solution of the utility model: the extrusion column is located at the gap of the screen, and the diameter of the extrusion column is smaller than the gap distance of the screen, so as to avoid the extrusion column being stuck in the gap of the screen when moving upward.

[0011] As a further solution of the utility model: the outer wall of the screening frame is fixedly connected with a connecting block, the outer wall of the connecting block is fixedly connected with a vibration motor for driving the screening assembly to perform vibrating screening, and the top of the screening frame is fixedly connected with a feeding frame for loading materials.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] By setting up the ejection component, during the screening process of the screening component screening the screws, the screening frame that vibrates up and down can use the electric extrusion block to squeeze the bottom plate, so that the bottom plate drives the extrusion column to move upward and insert into the gap between the screen plates, thereby ejecting the screws stuck in the gap of the screen, thereby achieving the purpose of automatically cleaning the blocked screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 It is a cross-sectional view of the connection between the base, the screening assembly and the ejection assembly of the utility model;

[0016] Figure 3 It is a schematic diagram of the internal structure of the screening component of the utility model.

[0017] In the figure: 1. base; 2. first spring; 3. screening assembly; 301. screening frame; 302. screen; 303. fixing plate; 304. connecting block; 305. vibration motor; 306. feeding frame; 4. ejection assembly; 401. ball bearing; 402. lifting column; 403. bottom plate; 404. extrusion column; 5. lifting slot; 6. storage slot; 7. extrusion block; 8. connecting plate. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figures 1 to 3 In an embodiment of the utility model, a screening and unloading device for screw production includes a base 1, a first spring 2 is fixedly connected to the upper wall of the base 1, a screening assembly 3 is provided on the upper wall of the first spring 2, the screening assembly 3 includes a screening frame 301 fixedly connected to the upper wall of the first spring 2, a screen 302 is fixedly connected to the outer wall of the screening frame 301, a fixing plate 303 is fixedly connected to the inner wall of the screening frame 301 at the bottom of the screen 302, a connecting plate 8 is fixedly connected to the outer wall of the base 1, an ejection assembly 4 is provided on the upper wall of the connecting plate 8, and the ejection assembly 4 includes:

[0020] A ball 401 is attached to the upper wall of the connecting plate 8, and the ball 401 is rotatably connected to a lifting column 402 that penetrates into the interior of the screening frame 301, and the upper wall of the lifting column 402 is fixedly connected to a bottom plate 403, and the upper wall of the bottom plate 403 is fixedly connected to a plurality of extrusion columns 404;

[0021] The upper wall of the screening frame 301 is fixedly connected with an extrusion block 7, the height of which matches the distance from the bottom plate 403 to the inner wall of the screening frame 301, so as to realize extrusion of the bottom plate 403;

[0022] The outer wall of the screening frame 301 is fixedly connected with a connecting block 304, the outer wall of the connecting block 304 is fixedly connected with a vibration motor 305 for driving the screening assembly 3 to perform vibration screening, and the top of the screening frame 301 is fixedly connected with a feeding frame 306 for loading materials.

[0023] In this embodiment, when the screws are actually screened, the vibrator is first started, and the vibrator drives the screening assembly 3 to vibrate back and forth. At this time, the screws to be screened are poured into the feeding frame 306. At this time, the screws slide from the top of the screen 302, and the vibrating screening frame 301 screens the screws, so that the larger screws continue to slide from the top of the screen 302 to the outer end of the screening frame 301, while the smaller screws fall from the gap of the screen 302 to the upper end of the fixing plate 303, and at the same time, the screws slide from the upper end of the fixing plate 303 to the inner end of the storage slot 6. During this period, the upward moving screening frame 301 drives the extrusion block 7 to extrude the bottom plate 403 and the extrusion column 404, so that the extrusion bottom plate 403 and the extrusion column 404 move upward synchronously along the inside of the screen 302, and the screws stuck in the gap of the screen 302 are ejected and cleared. When the screening frame 301 drives the extrusion block 7 to move downward, the bottom plate 403 and the extrusion column 404 are not squeezed, and the bottom plate 403 and the extrusion column 404 are synchronously moved downward and reset under the action of gravity. This reciprocating process can realize the automatic ejection and clearing operation of the screws stuck in the gap of the screen 302.

[0024] Please refer to Figures 1 to 3 The upper wall of the fixing plate 303 is provided with a lifting groove 5 which penetrates to the bottom wall of the fixing plate 303 , and the diameter of the lifting groove 5 matches the diameter of the extrusion column 404 .

[0025] In this embodiment: In order to prevent the screws that fall from the top of the screen 302 from getting stuck in the inside of the lifting groove 5 and causing the extrusion column 404 to be unable to be lifted, the diameter of the lifting groove 5 is set to match the diameter of the extrusion column 404, so that the extrusion column 404 will not be unable to be lifted or lowered due to the screws getting stuck in the lifting groove 5.

[0026] Please refer to Figures 1 to 3 The upper wall of the fixing plate 303 is located at the side of the lifting groove 5 and has multiple groups of receiving grooves 6. The receiving grooves 6 are V-shaped when viewed from the right and are used to collect screws that slide down from the lifting groove 5.

[0027] In this embodiment: in order to realize that the bottom plate 403 and the extrusion column 404 drive the screw above the extrusion column 404 to move along the top of the screen 302 during the upward movement, and get stuck in the gap of the screen 302, thereby causing the screen 302 to be blocked, resulting in a larger screening error.

[0028] Please refer to Figures 1 to 3 The extrusion column 404 is located at the gap of the screen 302, and the diameter of the extrusion column 404 is smaller than the gap distance of the screen 302, so as to prevent the extrusion column 404 from being stuck in the gap of the screen 302 when moving upward.

[0029] In this embodiment: In order to accurately eject and remove the screws stuck in the gaps of the screen 302, the extrusion column 404 is set in the gaps of the screen 302. In order to avoid the problem that the extrusion column 404 cannot pass through after moving up or is stuck in the gaps of the screen 302, resulting in the extrusion column 404 being unable to be raised or lowered again, the diameter of the extrusion column 404 is set to be smaller than the gap distance of the screen 302, so that the extrusion column 404 can completely pass through the gaps of the screen 302 and eject and remove the screws.

[0030] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A screening and feeding device for screw production, comprising a base (1), the upper wall of the base (1) being fixedly connected to a first spring (2), the upper wall of the first spring (2) being provided with a screening assembly (3), the screening assembly (3) comprising a screening frame (301) fixedly connected to the upper wall of the first spring (2), the outer wall of the screening frame (301) being fixedly connected to a screen (302), the inner wall of the screening frame (301) being located at the bottom of the screen (302) being fixedly connected to a fixing plate (303), characterized in that: The outer wall of the base (1) is fixedly connected with a connecting plate (8), and the upper wall of the connecting plate (8) is provided with an ejection assembly (4), and the ejection assembly (4) comprises: A ball bearing (401) is attached to the upper wall of the connecting plate (8), and the ball bearing (401) is rotatably connected to a lifting column (402) that penetrates into the interior of the screening frame (301). The upper wall of the lifting column (402) is fixedly connected to a bottom plate (403), and the upper wall of the bottom plate (403) is fixedly connected to a plurality of extrusion columns (404).

2. A screening and unloading device for screw production according to claim 1, characterized in that: The upper wall of the fixing plate (303) is provided with a lifting groove (5) penetrating to the bottom wall of the fixing plate (303), and the diameter of the lifting groove (5) matches the diameter of the extrusion column (404).

3. A screening and blanking device for screw production according to claim 1, characterized in that: The upper wall of the fixing plate (303) is provided with a plurality of receiving grooves (6) at the side of the lifting groove (5). The receiving grooves (6) are V-shaped in right view and are used to collect screws that slide down from the lifting groove (5).

4. A screening and blanking device for screw production according to claim 1, characterized in that: An extrusion block (7) is fixedly connected to the upper wall of the screening frame (301), and the height of the extrusion block (7) matches the distance from the bottom plate (403) to the inner wall of the screening frame (301), so as to realize extrusion of the bottom plate (403).

5. The screening and unloading device for screw production according to claim 1, characterized in that: The squeezing column (404) is located at the gap of the screen (302), and the diameter of the squeezing column (404) is smaller than the gap distance of the screen (302), so as to prevent the squeezing column (404) from getting stuck in the gap of the screen (302) when moving upward.

6. A screening and blanking device for screw production according to claim 1, characterized in that: The outer wall of the screening frame (301) is fixedly connected to a connecting block (304), the outer wall of the connecting block (304) is fixedly connected to a vibration motor (305) for driving the screening assembly (3) to perform vibration screening, and the top of the screening frame (301) is fixedly connected to a feeding frame (306) for loading materials.

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