Defective product screening device for screw production

Abstract

The invention discloses a defective product screening device for screw production, and belongs to the technical field of screw production. The defective product screening device for screw production comprises a material storage box, the rear side end of the material storage box is fixedly connected with a supporting frame, and the side wall of the supporting frame is fixedly connected with a material conveying plate; a limiting hole is formed in the middle end of the material conveying plate, two transmission assemblies which are symmetrically distributed are installed on the lower side of the material conveying plate, a surface defect detection assembly is arranged on the side wall of the supporting frame and located on the upper side of the material conveying plate, and a defective product recycling box is arranged at the left side end of the material storage box. Surface defects and sizes of produced screws can be detected, if the screws are unqualified and are defective products, the defective products can be pushed into the defective product recycling box to be collected through the defective product selecting assembly, automatic screening operation of a large number of screws is completed, and the production efficiency is improved. And the screw screening efficiency in the prior art is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of screw production, and more specifically to a defective product screening device used in screw production. Background Art

[0002] A screw is a common fastener used to connect two or more objects together. It is usually made of metal (such as steel, stainless steel, aluminum, etc.) and has a threaded structure that can be screwed into the material by rotation to provide a firm connection.

[0003] At present, in the production process of screws, due to continuous production, the screws produced still contain unqualified dimensions due to equipment manufacturing errors: diameter, length, thread parameters exceed the tolerance range; surface defects: cracks, scratches, rust and other defects. For this reason, personnel are required to screen the screws for defects after the production of the screws, so that the qualified screws are collected in a unified manner. However, in this process, due to the large number of screws, personnel may miss screening some unqualified screws while selecting the screws one by one, and the screening efficiency is relatively slow. For this reason, this scheme proposes a defective product screening device for screw production. Summary of the invention

[0004] 1. Technical problems to be solved: In view of the problems existing in the prior art, the purpose of the present invention is to provide a defective product screening device for screw production, which can detect the surface defects and screw sizes of the produced screws. If the screws are of unqualified quality and are defective, they can be pushed into a defective product recovery box for collection through a defective product selection component, thereby completing the automated screening operation of a large number of screws, greatly improving the existing screw screening efficiency.

[0005] 2. Technical solution: To solve the above problems, the present invention adopts the following technical solutions.

[0006] A defective product screening device for screw production comprises a material storage box, a support frame is fixedly connected to the rear side end of the material storage box, a feed plate is fixedly connected to the side wall of the support frame, a limiting hole is provided at the middle end of the feed plate, two symmetrically distributed transmission components are installed on the lower side of the feed plate, a surface defect detection component is provided on the side wall of the support frame, the surface defect detection component is located on the upper side of the feed plate, a defective product recovery box is provided on the left side end of the material storage box, a defective product picking component is installed on the lower side of the feed plate, and the defective product picking component and the surface defect detection component are in the same horizontal plane.

[0007] A further improvement is that a bracket is fixedly connected to the rear inner wall of the material storage box, a storage plate is fixedly connected between the middle inner walls of the bracket, an electric push plate 2 is movably installed between the rear end of the storage plate and the inner wall of the bracket, an electric push plate 1 is embedded and installed between the front end of the storage plate and the inner bottom of the material storage box, and the inner bottom end of the material storage box is provided with an inclined bottom plate.

[0008] A further improvement is that the transmission assembly includes two supporting stands fixedly connected to the bottom end of the conveying plate, the side ends of the supporting stands are provided with receiving grooves, a plurality of evenly distributed rollers are rotatably connected between the inner walls of the receiving grooves, the outer ends of the plurality of rollers are sleeved with belts, and a motor is installed at the bottom of one of the rollers.

[0009] A further improvement is that one end of the belt is in the same horizontal plane as the side wall of the limiting hole and is in contact with the surface of the screw.

[0010] A further improvement is that the surface defect detection component includes a surface defect detector installed on the side wall of the feed plate, the probe of the surface defect detector is located on the upper side of the limit hole, a cylinder 1 is installed on one side of the surface defect detector, and the output end of the cylinder 1 is fixedly connected to the limit plate.

[0011] A further improvement is that the defective product selection component includes an electric push rod installed on the side wall of the feed plate, the electric push rod is located on the lower side of the transmission component and is arranged in an inclined shape, the output end of the electric push rod is fixedly connected to a converter, a positioning plate 1 is rotatably connected between the inner walls of the converter, a positioning plate 2 is fixedly connected to the upper end of the positioning plate 1, and the positioning plate 2 is consistent with the limiting hole.

[0012] A further improvement is that a second cylinder is installed on the side wall of the feed plate, an output end of the second cylinder is fixedly connected with a connecting plate, and the connecting plate is located at the lower side of the surface defect detector.

[0013] A further improvement is that an optical measuring instrument is installed on the right inner wall of the support frame, and the optical measuring instrument is located at the lower side of the transmission assembly.

[0014] 3. Beneficial effects: Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects: The present invention is reasonably designed. The produced screws are placed inside a storage box, and then the storage box conveys the screws one by one to the top of the feed plate. When one side of the screw stud is lighter, the stud falls between the inner walls of the limiting hole to complete the limiting. Then, driven by the transmission component, the screws are driven one by one to move toward the side of the surface defect detection component, so that when each screw is located below the surface defect detection component, the surface defects and the size of the screw can be detected. If the screw is of unqualified quality and is a defective product, the defective product selection component is driven to push the screw on the vertical surface at this location to present a horizontal surface. Finally, the second cylinder drives the connecting plate to push the defective screw into the defective product recovery box for collection, thereby completing the automatic screening operation of a large number of screws and selecting and classifying the defective products in the screws.

[0015] It should be noted that the structures not introduced in the present invention are the same as the prior art or can be implemented by using the prior art, and are not described in detail here because they do not involve the design points and improvement directions of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a structural schematic diagram of the material storage box of the present invention; Figure 3 It is a structural schematic diagram of the transmission assembly of the present invention; Figure 4 It is a schematic diagram of the structure of the surface defect detection component of the present invention; Figure 5 It is a schematic structural diagram of the defective product selection component of the present invention.

[0017] Description of the numbers in the figure: 1. Material storage box; 11. Bracket; 12. Storage plate; 13. Electric push plate 1; 14. Electric push plate 2; 15. Inclined bottom plate; 2. Support frame; 3. Feed plate; 4. Limiting hole; 5. Transmission assembly; 51. Support stand; 52. Storage tank; 53. Roller; 54. Belt; 55. Motor; 6. Surface defect detection component; 61. Surface defect detector; 62. Cylinder 1; 63. Limit plate; 64. Cylinder 2; 65. Connecting plate; 7. Defective product recycling box; 81. Electric push rod; 82. Adapter; 83. Positioning plate 1; 84. Positioning plate 2; 9. Optical measuring instrument. DETAILED DESCRIPTION

[0018] To facilitate understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0019] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "page", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0020] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0021] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", "provided with", "provided on" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Example

[0022] See also Figure 1 and Figure 5 A defective product screening device for screw production comprises a material storage box 1, a supporting frame 2 is fixedly connected to the rear side end of the material storage box 1, a feeding plate 3 is fixedly connected to the side wall of the supporting frame 2, a limiting hole 4 is provided at the middle end of the feeding plate 3, two symmetrically distributed transmission components 5 are installed on the lower side of the feeding plate 3, a surface defect detection component 6 is provided on the side wall of the supporting frame 2, and the surface defect detection component 6 is located on the upper side of the feeding plate 3, a defective product recovery box 7 is provided on the left side end of the material storage box 1, and a defective product picking component is installed on the lower side of the feeding plate 3, and the defective product picking component and the surface defect detection component 6 are in the same horizontal plane.

[0023] More specifically, an optical measuring instrument 9 is installed on the right inner wall of the support frame 2 , and the optical measuring instrument 9 is located at the lower side of the transmission assembly 5 .

[0024] More specifically, a second cylinder 64 is installed on the side wall of the feeding plate 3 , and a connecting plate 65 is fixedly connected to the output end of the second cylinder 64 . The connecting plate 65 is located at the lower side of the surface defect detector 61 .

[0025] During the use of this scheme, in order to make it more convenient to screen the defective products of the existing screws after production and improve the screening efficiency of personnel, in this embodiment, the personnel can first place the produced screws in the storage box 1, and then the storage box 1 will transport the screws one by one to the top of the feeding plate 3. When one side of the screw stud is lighter, the stud falls between the inner walls of the limiting hole 4 to complete the limiting, and then with the drive of the transmission component 5, the screws are driven one by one to move to the side of the surface defect detection component 6, so that each screw can be detected for surface defects and screw sizes when it is located under the surface defect detection component 6. If the screw is unqualified and defective, the defective selection component is driven to push the screw on the vertical surface to present a horizontal surface. Finally, the cylinder 2 64 drives the connecting plate 65 to push the defective screw into the defective recovery box 7 for collection, completing the automatic screening operation of a large number of screws, and selecting and classifying the defective products in the screws. In this embodiment, when detecting the length of the screws, the optical measuring instrument 9 can determine whether the sizes of multiple screws are in the same plane based on the emitted contact surface and duration, thereby determining whether the lengths of the screws are uniform.

[0026] See also Figure 1 and Figure 2 A bracket 11 is fixedly connected to the inner wall of the rear side of the storage box 1, a storage plate 12 is fixedly connected between the middle inner walls of the bracket 11, an electric push plate 14 is movably installed between the rear end of the storage plate 12 and the inner wall of the bracket 11, an electric push plate 13 is embedded and installed between the front end of the storage plate 12 and the inner bottom of the storage box 1, and an inclined bottom plate 15 is provided at the inner bottom end of the storage box 1.

[0027] During use of the present scheme, due to the inclined surface setting of the inclined bottom plate 15, the screws inside the storage box 1 can continuously fall above the electric push plate 13, and the initial position of the electric push plate 13 is located at the bottom of the storage box 1. When the screw feeding is needed, the personnel drives the electric push plate 13 to cause the screw above the electric push plate 13 to move upward and be located above the storage plate 12. Since the storage plate 12, the electric push plate 13, and the electric push plate 2 14 are all set with inclined surfaces, the screw slides above the electric push plate 2 14. Thereafter, the personnel drives the electric push plate 2 14 again to cause the screw to be finally transported to the surface of the feeding plate 3, and the stud falls between the inner walls of the limiting hole 4.

[0028] See also Figure 1 and Figure 3 The transmission assembly 5 includes two supporting stands 51 fixedly connected to the bottom end of the conveying plate 3, and a receiving groove 52 is opened at the side end of the supporting stand 51. A plurality of evenly distributed rollers 53 are rotatably connected between the inner walls of the receiving groove 52, and a plurality of outer ends of the plurality of rollers 53 are sleeved with belts 54, wherein a motor 55 is installed at the bottom of one of the rollers 53.

[0029] More specifically, one end of the belt 54 is in the same horizontal plane as the side wall of the limiting hole 4 and is in contact with the surface of the screw.

[0030] During use of the present solution, when one side of the screw falls between the inner walls of the limiting hole 4, the motor 55 drives the plurality of rollers 53 to drive the belt 54. Since one side of the belt 54 contacts the surface of the screw, the screw is driven by the belt 54 to move linearly, thereby driving the screw to move toward the side of the surface defect detection component 6, thereby performing subsequent defect detection operations. In this embodiment, the rotation directions of the rollers 53 on both sides are arranged in opposite directions.

[0031] See also Figure 1 and Figure 4-Figure 5 The surface defect detection component 6 includes a surface defect detector 61 installed on the side wall of the feeding plate 3, and the probe of the surface defect detector 61 is located on the upper side of the limiting hole 4. A cylinder 62 is installed on one side of the surface defect detector 61, and the output end of the cylinder 62 is fixedly connected to the limiting plate 63.

[0032] More specifically: the defective product selection component includes an electric push rod 81 installed on the side wall of the feed plate 3, the electric push rod 81 is located on the lower side of the transmission component 5 and is arranged in an inclined shape, the output end of the electric push rod 81 is fixedly connected to a converter 82, and a positioning plate 1 83 is rotatably connected between the inner walls of the converter 82, and a positioning plate 2 84 is fixedly connected to the upper end of the positioning plate 1 83, and the positioning plate 2 84 is consistent with the limiting hole 4.

[0033] During the use of this solution, when the screw is located at the lower side of the surface defect detector 61, its cylinder 1 62 is driven synchronously to cause the limit plate 63 to be located on the surface of the feed plate 3, thereby separating the screw at the rear from the screw being detected at this time, so that the surface defect detector 61 can perform defect detection operations on the surface of a single screw. If the surface of the screw has defects, the electric push rod 81 arranged in the inclined direction is driven synchronously to cause the positioning plate 2 84 to continue to extend and abut against the bottom of the screw, causing the screw to flip clockwise until the positioning plate 1 83 is attached to the bottom side of the support stand 51, and the positioning plate 2 84 is located between the inner walls of the limit hole 4, thereby abutting the screw on the vertical surface to the horizontal surface, and subsequent personnel drive the cylinder 2 64 again to cause the connecting plate 65 to abut the defective screw to the inside of the defective product recycling box 7 for recycling; Finally, the cylinder 1 62 and the electric push rod 81 retract again to allow subsequent screws to be screened for defective products to ensure the quality of the produced screws. When the quality of the screw is qualified, the cylinder 1 62 and the electric push rod 81 do not drive at all, thereby realizing automated screw screening and greatly improving the screw production efficiency.

[0034] The above-described embodiments only express a certain implementation mode of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the patent scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. A defective product screening device for screw production, comprising a material storage box (1), characterized in that: The rear side end of the material storage box (1) is fixedly connected to a support frame (2), a material conveying plate (3) is fixedly connected to the side wall of the support frame (2), a limiting hole (4) is provided at the middle end of the material conveying plate (3), two mutually symmetrically distributed transmission components (5) are installed on the lower side of the material conveying plate (3), a surface defect detection component (6) is provided on the side wall of the support frame (2), and the surface defect detection component (6) is located on the upper side of the material conveying plate (3), a defective product recovery box (7) is provided at the left side end of the material storage box (1), and a defective product selection component is installed on the lower side of the material conveying plate (3), and the defective product selection component and the surface defect detection component (6) are in the same horizontal plane.

2. The defective product screening device for screw production according to claim 1 is characterized in that: A bracket (11) is fixedly connected to the rear inner wall of the material storage box (1), a storage plate (12) is fixedly connected between the middle inner walls of the bracket (11), a second electric push plate (14) is movably installed between the rear end of the storage plate (12) and the inner wall of the bracket (11), an electric push plate (13) is embedded and installed between the front end of the storage plate (12) and the inner bottom of the material storage box (1), and an inclined bottom plate (15) is provided at the inner bottom end of the material storage box (1).

3. The defective product screening device for screw production according to claim 1 is characterized in that: The transmission assembly (5) comprises two support stands (51) fixedly connected to the bottom end of the feed plate (3); a storage groove (52) is provided at the side end of the support stand (51); a plurality of evenly distributed rollers (53) are rotatably connected between the inner walls of the storage groove (52); belts (54) are sleeved on the outer ends of the plurality of rollers (53); and a motor (55) is installed at the bottom of one of the rollers (53).

4. The defective product screening device for screw production according to claim 3 is characterized in that: One end of the belt (54) is in the same horizontal plane as the side wall of the limiting hole (4) and is in contact with the surface of the screw.

5. The defective product screening device for screw production according to claim 1 is characterized in that: The surface defect detection assembly (6) comprises a surface defect detector (61) mounted on the side wall of the feed plate (3), the probe of the surface defect detector (61) being located on the upper side of the limit hole (4); a cylinder 1 (62) being mounted on one side of the surface defect detector (61), the output end of the cylinder 1 (62) being fixedly connected to the limit plate (63).

6. The defective product screening device for screw production according to claim 1 is characterized in that: The defective product selection component comprises an electric push rod (81) installed on the side wall of the feed plate (3), the electric push rod (81) is located at the lower side of the transmission component (5) and is arranged in an inclined state, the output end of the electric push rod (81) is fixedly connected to an adapter (82), the inner wall of the adapter (82) is rotatably connected to a positioning plate 1 (83), the upper end of the positioning plate 1 (83) is fixedly connected to a positioning plate 2 (84), and the positioning plate 2 (84) is matched with the limiting hole (4).

7. The defective product screening device for screw production according to claim 5 is characterized in that: A second cylinder (64) is mounted on the side wall of the feed plate (3), and a connecting plate (65) is fixedly connected to the output end of the second cylinder (64), wherein the connecting plate (65) is located at the lower side of the surface defect detector (61).

8. The defective product screening device for screw production according to claim 1 is characterized in that: An optical measuring instrument (9) is mounted on the right inner wall of the support frame (2), and the optical measuring instrument (9) is located on the lower side of the transmission assembly (5).

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