Material detecting and screening device

Abstract

The utility model relates to a material detecting and screening device which comprises a fixed seat, a pushing block, a driving mechanism and a material detecting mechanism, and a material receiving position, a first screening position and a second screening position are arranged in the fixed seat; the pushing block is movably arranged in the cavity, the driving mechanism comprises a first power source and a second power source which are oppositely arranged, at least one of the first power source and the second power source is used for enabling the pushing block to move and stop at one of the first screening position, the second screening position and the material receiving position, and the material detection mechanism is installed on the fixing base. When the materials are detected to be qualified, the pushing block can move to the first screening position, and when the materials are detected to be unqualified, the pushing block can move to the second screening position. When the materials are screws, the screws with non-specified lengths can be removed, and the length of the screws entering the screw tightening device is consistent, so that the condition of poor locking of the screws is avoided, the quality of products is effectively ensured, and the percent of pass of the products is improved.

Description

Technical Field

[0001] The present application relates to the technical field of material detection and screening, and in particular to a material detection and screening device. Background Art

[0002] Screws are commonly used fasteners. During the assembly of mechanical equipment, many components are fastened together using screws. With the development and advancement of technology, automatic screw driving machines have been developed to automatically fasten components. Generally speaking, an automatic screw driving machine consists of a vibrating feeder and a screw tightening mechanism. The vibrating feeder feeds the screws into the tightening mechanism, which then automatically tightens the screws onto the product. This significantly improves production efficiency, reduces manual labor, lowers production costs, and improves product quality and stability.

[0003] However, in actual production, operators often confuse screws of the same type but different lengths. This is especially true for screws with length differences of 1 to 5 mm, which are invisible to the naked eye. In some scenarios where screw length is critical, shorter screws can lead to unreliable connections, while longer screws can cause assembly failure or damage the screw holes. Both of these factors can lead to poor screw locking and seriously affect product quality. Therefore, ensuring consistent screw lengths in screwdriving devices, and thus ensuring product quality, is an urgent issue to be addressed. Utility Model Content

[0004] Based on this, the purpose of this application is to provide a material detection and screening device to solve the problem in the prior art that screws of different specifications and sizes are easily confused, resulting in poor screw locking, which in turn affects product quality.

[0005] According to one aspect of the present application, there is provided a material detection and screening device, comprising:

[0006] A fixed seat, wherein a cavity is defined in the fixed seat, the cavity having a material receiving position, a first screening position, and a second screening position spaced apart from each other in a first horizontal direction, and the cavity walls corresponding to the material receiving position, the first screening position, and the second screening position are respectively defined with a material receiving opening, a first material dropping opening, and a second material dropping opening;

[0007] a pushing block, movably disposed in the cavity;

[0008] a driving mechanism comprising a first power source and a second power source disposed opposite to each other along the first horizontal direction, wherein at least one of the first power source and the second power source is used to move the pushing block and stop it at one of the first screening position, the second screening position, and the material receiving position;

[0009] A material detection mechanism is provided on the fixing seat, and is used for detecting whether the material falling into the pushing block from the material receiving port is qualified when the pushing block moves to the material receiving position.

[0010] In one embodiment, the pushing block is connected to the first power source, the first power source is used to drive the pushing block to move, and the second power source is used to block the movement of the pushing block so that the pushing block can stop at one of the middle positions among the material receiving position, the first screening position and the second screening position.

[0011] In one embodiment, the first power source and the second power source abut against opposite sides of the pushing block in the first horizontal direction, so that one of the first power source or the second power source can push the pushing block, and the other of the first power source or the second power source can stop the pushing block at one of the first screening position, the second screening position and the material receiving position.

[0012] In one embodiment, two clamping rods extending along the first horizontal direction and parallel to each other are provided in the cavity, a slot is formed between the two clamping rods, each of the clamping rods is provided with a blanking groove at a position facing the other clamping rod and corresponding to the first screening position and the second screening position, and each of the clamping rods is passed through the pushing block.

[0013] In one embodiment, the fixed seat is provided with a third power source below the material receiving position, and the output end of the third power source is connected to a lifting column. The lifting column can rise in the vertical direction and extend into the pushing block under the drive of the third power source, so that the material can stay in the pushing block; the two clamping rods are movably connected to the side walls of the cavity, and can approach or move away from each other along a second horizontal direction perpendicular to the first horizontal direction to change the size of the card slot in the second horizontal direction.

[0014] In one embodiment, the material detection mechanism includes a first pair of shooting components and a second pair of shooting components arranged relatively along a second horizontal direction perpendicular to the first horizontal direction, the first pair of shooting components is used to emit light, and the second pair of shooting components is used to receive light. The material detection and screening device also includes a control module communicatively connected to the second pair of shooting components, and the control module can judge whether the length of the material is qualified based on the intensity of light received by the second pair of shooting components.

[0015] In one embodiment, the first radiation component includes a first emitting element and a second emitting element spaced apart along a vertical direction, the second radiation component includes a first receiving element and a second receiving element spaced apart along the vertical direction, the first receiving element is arranged opposite to the first emitting element, and the second receiving element is arranged opposite to the second emitting element.

[0016] In one embodiment, the material detection and screening device further includes a cleaning mechanism, the fixing seat is provided with a cleaning joint connected to the cavity at a position corresponding to the material receiving position, and the cleaning mechanism pipeline is connected to the cleaning joint.

[0017] In one embodiment, the material detection and screening device also includes an air blowing mechanism, and the fixed seat is provided with an air blowing joint connected to the first drop-out port 106 at the first screening position, and / or is provided with a air blowing joint connected to the second drop-out port 107 at the second screening position, and the air blowing joint pipeline is connected to the air blowing mechanism.

[0018] In one embodiment, the material receiving port is connected to a material receiving pipe, and / or the first material dropping port is connected to a first material dropping pipe, and / or the second material dropping port is connected to a second material dropping pipe; a material dropping sensor is provided on at least one of the material receiving pipe, the first material dropping pipe and the second material dropping pipe.

[0019] The material detection and screening device is configured such that a push block is movably disposed within a cavity of a fixed seat, and a cavity wall within the cavity is provided with a material receiving opening, a first material discharge opening, and a second material discharge opening corresponding to the material receiving position, the first screening position, and the second screening position, respectively. Furthermore, a driving mechanism is provided, comprising a first power source and a second power source disposed oppositely along a first horizontal direction, so that the push block can be driven by the first power source and the second power source to move within the cavity and stop at one of the material receiving position, the first screening position, or the second screening position. Thus, when the push block moves and stops at the material receiving position, the material detection mechanism can detect whether the material falling into the push block from the material receiving opening is qualified. When the material is detected as qualified, the push block can be controllably moved and stopped at the first screening position, at which point the qualified material can be discharged from the first discharge opening. When the material is detected as unqualified, the push block can be controllably moved and stopped at the second screening position, at which point the unqualified material can be discharged from the second discharge opening. This enables automatic material detection and automatic screening of qualified and unqualified materials. In this way, when the material is a screw, the material detection and screening device provided in this application can remove screws of non-specified length, ensuring that the length of the screws entering the screw-tightening device is consistent, thereby avoiding poor locking of the screws, effectively ensuring the quality of the product, and improving the product's pass rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is an axonometric view of a material detection and screening device provided in one embodiment of the present application.

[0021] Figure 2 This is a front view of a material detection and screening device provided in one embodiment of the present application.

[0022] Figure 3 A schematic diagram of a partial structure of a material detection and screening device provided in an embodiment of the present application Figure 1 .

[0023] Figure 4 A schematic diagram of a partial structure of a material detection and screening device provided in an embodiment of the present application Figure 2 .

[0024] Figure 5 A schematic diagram of a partial structure of a material detection and screening device provided in an embodiment of the present application Figure 3 (Push block hidden).

[0025] Figure 6 This is an axonometric view of a material detection and screening device provided in another embodiment of the present application.

[0026] Figure 7 A cross-sectional view of a material detection and screening device provided in another embodiment of the present application.

[0027] Figure 8 for Figure 6 A magnified schematic diagram of area A in the middle.

[0028] Figure 9 A schematic diagram of a partial structure of a material detection and screening device provided in an embodiment of the present application Figure 4 .

[0029] Figure 10 A schematic diagram of a partial structure of a material detection and screening device provided in an embodiment of the present application Figure 5 .

[0030] Figure 11 A schematic diagram of a partial structure of a material detection and screening device provided in an embodiment of the present application Figure 6 .

[0031] Description of reference numerals:

[0032] 10. Material detection and screening device; 100. Fixing seat; 101. Cavity; 102. Material receiving position; 103. First screening position; 104. Second screening position; 105. Material receiving port; 106. First material drop port; 107. Second material drop port; 200. Push block; 201. Guide groove; 202. Guide hole; 203. Through groove; 300. Material detection mechanism; 310. First beamforming assembly; 311. First transmitting element; 312. Second transmitting element; 320. Second beamforming assembly; 321. First receiving element; 322. Second receiving element; 40 0. Driving mechanism; 410. First power source; 420. Second power source; 500. Clamping rod; 501. Slot; 502. Blanking chute; 503. Nail hole; 600. Adjusting screw; 700. Limit screw; 800. Third power source; 900. Lifting column; 1000. Fourth power source; 1100. Material receiving pipe; 1200. First blanking pipe; 1300. Second blanking pipe; 1400. Blanking sensor; 1500. Air blowing connector; 1600. Air blowing mechanism; 1700. Cleaning connector; 1800. Cleaning mechanism; 20. Screw. DETAILED DESCRIPTION

[0033] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0034] In the description of this application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0035] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0036] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connected," "fixed," etc., should be interpreted broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0037] In this application, unless otherwise expressly specified or limited, if a first feature is described as being "above" or "below" a second feature, or similar descriptions, this may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is described as being "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is described as being "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0038] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only embodiment.

[0039] The present application provides a material detection and screening device, which can detect whether the appearance or size of the material is qualified, and then automatically screen the qualified materials and the unqualified materials to ensure that the unqualified products can be automatically eliminated.

[0040] The following describes the structure of the material detection and screening device of the present application, taking screws as materials and detecting the length of screws as an example. It is understood that in other embodiments, the material detection and screening device of the present application is not limited to detecting and screening screws, but can also detect and screen any material, and is not limited to detecting only the length of screws, but can also detect the appearance or other dimensions of the material, which are not limited here.

[0041] See Figure 1 and Figure 2 , Figure 1 FIG2 shows an isometric view of a material detection and screening device 10 provided in one embodiment of the present application. Figure 2 A front view of a material detection and screening device 10 provided in an embodiment of the present application is shown. The material detection and screening device 10 provided in an embodiment of the present application includes a fixed seat 100, a pushing block 200, a material detection mechanism 300 and a driving mechanism 400, wherein the fixed seat 100 is used to provide support, and the pushing block 200 and the material detection mechanism 300 are arranged on the fixed seat 100; the material detection mechanism 300 is used to detect materials to be detected (such as screws, and the following description is based on screws as an example); the pushing block 200 is used to accommodate screws, and the driving mechanism 400 is used to transfer the screws according to the detection results of the material detection mechanism 300, so as to screen screws that pass the detection and screws that fail the detection, thereby achieving the purpose of removing screws that fail the detection.

[0042] Specifically, in one embodiment, Figure 3 As shown, the fixing seat 100 is an internally hollow structure, which is provided with a cavity 101. The cavity 101 has a material receiving position 102, a first screening position 103, and a second screening position 104 spaced apart from each other in the first horizontal direction, and the cavity 101 is provided with a material receiving port 105, a first material drop port 106, and a second material drop port 107 on the cavity wall corresponding to the material receiving position 102, the first screening position 103, and the second screening position 104. Optionally, in the embodiment shown in the figure, the material receiving position 102 is located between the first screening position 103 and the second screening position 104. Correspondingly, the material receiving port 105 is provided on the top wall of the cavity 101, and the first material drop port 106 and the second material drop port 107 are spaced apart from each other along the first horizontal direction (the X direction shown in the figure) on the bottom wall of the cavity 101. The pushing block 200 is provided with a guide groove 201 (which runs through the opposite ends of the pushing block in the vertical direction in the figure and is slightly larger than the diameter of the screw) Figure 3 ), and the pushing block 200 is movably arranged in the cavity 101, so that the pushing block 200 can move to one of the receiving position 102, the first screening position 103 or the second screening position 104.

[0043] In this way, when the pushing block 200 moves to the material receiving position 102, the guide groove 201 of the pushing block 200 and the material receiving port 105 can be aligned with each other, and the screw can fall into the guide groove 201 of the pushing block 200 from the material receiving port 105. At this time, the material detection mechanism 300 can detect whether the length of the screw falling into the guide groove 201 is qualified; when the screw is detected to be qualified, the pushing block 200 can be moved to the first screening position 103 in a controllable manner. At this time, the guide groove 201 of the pushing block 200 and the first blanking port 106 are aligned with each other, and qualified screws can be discharged from the first blanking port 106; similarly, when the screw is detected to be unqualified, the pushing block 200 can be moved to the second screening position 104 in a controllable manner. At this time, the guide groove 201 of the pushing block 200 and the second blanking port 107 are aligned with each other, and unqualified screws can be discharged from the second blanking port 107 and be removed.

[0044] It is understood that the fixing base 100 can be a one-piece structure or a structure composed of multiple plates. It is also understood that the material receiving position 102, the first screening position 103, and the second screening position 104 are not limited to being arranged in the positions shown in the figure, and can also be arranged in any order and intervals, which is not limited here.

[0045] Further, see Figures 1 to 3 The driving mechanism 400 is arranged on the fixed seat 100, which includes a first power source 410, and the pushing block 200 is fixedly connected to the first power source 410. The first power source 410 is used to drive the pushing block 200 to move back and forth along the first horizontal direction.

[0046] However, it is worth noting that if a single first power source 410 is required to drive the pushing block 200 to stay at the material receiving position 102, the first screening position 103 or the second screening position 104, the first power source 410 needs to be selected as a servo electric cylinder or a two-stroke cylinder. In this way, the cost will be very high. If an ordinary cylinder is used, the cost can be greatly reduced. However, according to common sense, the output end of a single ordinary cylinder can only move from the initial position to the maximum stroke position, and cannot stop at the middle position between the initial position and the maximum stroke position.

[0047] In order to solve this problem, that is, to save costs by using an ordinary cylinder, and to enable the output end of the ordinary cylinder to stop at an intermediate position between the initial position and the maximum stroke position, the applicant of this application thought of setting up another ordinary cylinder to limit the output stroke of the first power source 410.

[0048] For more details, please see Figures 1 to 3In one embodiment, the driving mechanism 400 also includes a second power source 420 arranged opposite to the first power source 410 in the first horizontal direction. The first power source 410 and the second power source 420 are both ordinary cylinders, and the cylinder diameter of the second power source 420 is larger than that of the first power source 410, so that the second power source 420 can block the movement of the pushing block 200, so that the pushing block 200 can stop at one of the middle ones among the material receiving position 102, the first screening position 103 and the second screening position 104.

[0049] For example, Figure 3 As shown, the material receiving position 102 is located between the first screening position 103 and the second screening position 104. When material receiving is required, the output end of the first power source 410 extends and drives the push block 200 to move, and the output end of the second power source 420 also extends. When the push block 200 moves to the material receiving position 102, the output end of the second power source 420 abuts against the push block 200, so that the push block 200 can stop at the material receiving position 102, so that material receiving can be carried out; when the material detection mechanism 300 detects that the length of the screw is qualified, the output end of the second power source 420 does not move or returns to its original position, the output end of the first power source 410 retracts, and drives the push block 200 returns to its initial position, that is, moves to the first screening position 103 and stops, so that the screws that have passed the inspection can fall into the first blanking port 106; when the material detection mechanism 300 detects that the length of the screw is unqualified, the output end of the second power source 420 returns to its original position, and the output end of the first power source 410 extends to the maximum stroke, and drives the pushing block 200 to move to the second screening position 104 and stop, so that the screws that have passed the inspection can fall into the second blanking port 107; finally, after the unqualified screws are discharged, the output end of the second power source 420 extends again, pushes the pushing block 200 to the material receiving position 102, and restarts the material receiving and detection.

[0050] It is easy to understand that when the positions of the material receiving position 102, the first screening position 103, and the second screening position 104 are not set as shown in the figure, the principle of using the first power source 410 and the second power source 420 to make the push block 200 stay in the above three positions is similar to the working principle described above and will not be repeated here. It is also understandable that the second power source 420 can also drive the push block 200 to move back and forth along the first horizontal direction, and the first power source 410 can limit the push block 200 so that the push block 200 can stop at the middle one of the material receiving position 102, the first screening position 103, and the second screening position 104, which is not limited here.

[0051] Furthermore, the pushing block 200 is also provided with a plurality of adjusting screws 600, and a limit screw 700 is provided on the side wall of the cavity 101 opposite to the adjusting screw 600; the adjusting screw 600 is used to abut against the limit screw 700, and the extending length of the adjusting screw 600 relative to the pushing block 200 is adjustable, so that the position of the pushing block 200 relative to the output end of the first power source 410 in the first horizontal direction can be changed, and then the stroke of the pushing block 200 can be changed, so that when the output end of the first power source 410 is extended or retracted, the guide groove 201 in the pushing block 200 can be exactly coaxially aligned with the receiving port 105, the first blanking port 106 or the second blanking port 107, thereby eliminating the error caused by the fixed cylinder stroke.

[0052] In another embodiment, the pushing block 200 is neither fixedly connected to the first power source 410 nor to the second power source 420, but the first power source 410 and the second power source 420 are always in contact with the opposite sides of the pushing block 200 in the first horizontal direction, and both the first power source 410 and the second power source 420 can push the pushing block 200 to move along the first horizontal direction, that is, Figure 3 As shown, the first power source 410 can push the pushing block 200 to move toward the left direction in the figure. At this time, the second power source 420 can limit the pushing block 200 so that the pushing block 200 can stay at any one of the first screening position 103, the second screening position 104 and the material receiving position 102; on the contrary, the second power source 420 can push the pushing block 200 to move toward the right direction in the figure. At this time, the first power source 410 can limit the pushing block 200 so that the pushing block 200 can stay at any one of the first screening position 103, the second screening position 104 and the material receiving position 102, thereby achieving the same technical effect as the above embodiment.

[0053] More specifically, the manner in which the screw falls from the guide groove 201 to the first blanking opening 106 or the second blanking opening 107 is achieved by the structure of the following embodiment, combined with Figure 3 、 Figure 4 and Figure 5As shown, two clamping rods 500 are provided in the cavity 101 of the fixing seat 100, and the opposite ends of each clamping rod 500 are fixedly connected to the side walls of the cavity 101, so that the two clamping rods 500 extend along the first horizontal direction and are parallel to each other, and each clamping rod 500 is passed through the pushing block 200; a card slot 501 extending along the first horizontal direction is formed between the two clamping rods 500, and each clamping rod 500 is opened at a position facing the other clamping rod 500 and corresponding to the first screening position 103 and the second screening position 104. There is a material drop groove 502, and the material drop groove 502 located at the same position on the two clamping rods 500 and the card slot 501 together form a nail hole 503, so that the two clamping rods 500 are formed with two nail holes 503, and the two nail holes 503 are respectively located at the first screening position 103 and the second screening position 104, and are respectively arranged corresponding to the first material drop hole 106 and the second material drop hole 107. The aperture of each nail hole 503 is larger than the size of the card slot 501 in the second horizontal direction perpendicular to the first horizontal direction (the Y direction shown in the figure).

[0054] Since the screw 20 includes a nut and a screw rod, the diameter of the nut is larger than the diameter of the screw rod, so by setting two clamping rods 500, the slot 501 can not only guide the push block 200 so that the push block 200 can only move along the first horizontal direction, but also the slot 501 formed by the two clamping rods 500 is designed to be slightly larger than the diameter of the screw rod in most specifications of the screw 20 in the second horizontal direction, and smaller than the diameter of the nut, so that when the screw 20 enters the push block 200 from the receiving port 105, the screw 20 can be tightened. After passing through the guide groove 201, the screw rod of the screw 20 can pass through the card slot 501, and the nut abuts against the clamping rod 500, so that the screw 20 can be suspended in the pushing block 200, and can move with the pushing block 200 when the pushing block 200 moves along the first horizontal direction; when the pushing block 200 moves to the first screening position 103 or the second screening position 104, the screw 20 can automatically fall into the first drop port 106 or the second drop port 107 under the action of gravity, thereby realizing the sorting and screening of the screws 20.

[0055] Preferably, the pushing block 200 is provided with two guide holes 202 which pass through the pushing block 200 at two opposite ends along the first horizontal direction, and each clamping rod 500 is passed through a corresponding guide hole 202, so that the clamping rod 500 can not only allow the screw 20 to stay suspended in the pushing block 200, but also guide the pushing block 200 when the pushing block 200 moves along the first horizontal direction.

[0056] As an alternative embodiment, other structures for automatically clamping and releasing the screw 20 may be provided in the pushing block 200 to achieve the clamping or releasing of the screw 20. This is not limited here, but it is obvious that the structure of the embodiment shown in the figure is the simplest way to clamp or release the screw 20 and has the lowest manufacturing cost.

[0057] However, it is worth noting that since the nut diameter of the screw 20 itself is large and the screw diameter is small, when the screw 20 falls from the material receiving port 105 into the guide groove 201 of the pushing block 200, the screw 20 may be deflected due to the uneven gravity of the screw 20 itself in the length direction, resulting in the screw 20 not being guaranteed to fall into the clamping groove 501 formed by the two clamping rods 500. In order to solve this problem, as an improvement to the above embodiment, Figure 6 、 Figure 7 and Figure 8 As shown, the fixing seat 100 is provided with a third power source 800 below the receiving position 102, and the output end of the third power source 800 is connected to a lifting column 900, which can rise or fall under the drive of the third power source 800; the pushing block 200 is provided with a through slot 203 running through the two opposite ends along the first horizontal direction, and the two clamping rods 500 are jointly provided in the through slot 203, and the two clamping rods 500 are movably connected to the side wall of the cavity 101. Specifically, as shown in FIG. Figure 6 As shown, the fixing base 100 is provided with two fourth power sources 1000, each of which is connected to a clamping rod 500. Driven by the fourth power sources 1000, the two clamping rods 500 can move closer to or further from each other along the second horizontal direction, thereby changing the size of the clamping slot 501 in the second horizontal direction. Preferably, guide rods extending along the second horizontal direction are provided on the sidewalls of the cavity 101. Each clamping rod 500 is connected to a guide block that is slidably mounted on the corresponding guide rod, so that the clamping rods 500 can move smoothly along the second horizontal direction without deviating from the predetermined motion trajectory.

[0058] In this way, when the lifting column 900 rises, the lifting column 900 extends into the pushing block 200. Regardless of whether the screw 20 is deflected after falling into the pushing block 200, the lifting column 900 will catch the screw 20 at this time, so that the screw 20 can stay in the pushing block 200 at the position of the material receiving position 102, and then the two clamping rods 500 approach each other along the second horizontal direction. At this time, the two clamping rods 500 can clamp the screw 20, so that the screw 20 is fixed in the vertical direction in the slot 501 of the two clamping rods 500 in a vertical posture, thereby achieving the effect of correction, and solving the problem that the screw 20 may not fall into the slot 501 due to deflection. After the screw 20 is corrected, the two clamping rods 500 move slightly away from each other to release the screw 20, but the nut of the screw 20 is still connected to the clamping rod 500. At this time, the lifting column 900 drops back to its original position to avoid the pushing block 200, so that the pushing block 200 can drive the screw 20 to move to the first screening position 103 or the second screening position 104, and then the screw 20 can fall from the first drop port 106 or the second drop port 107.

[0059] See Figure 9 In the structure of the material detection mechanism 300, in the embodiment of the present application, the material detection mechanism 300 is a mirror-type optical fiber structure, that is, the material detection mechanism 300 includes a first mirror-type component 310 and a second mirror-type component 320 arranged relatively along the second horizontal direction, the first mirror-type component 310 and the second mirror-type component 320 are connected with optical fibers, the first mirror-type component 310 is used to emit light, and the second mirror-type component 320 is used to receive light, and the material screening device also includes a control module (not shown in the figure) that is communicatively connected to the second mirror-type component 320, and the control module can judge whether the length of the screw 20 is qualified according to the intensity of the light received by the second mirror-type component 320. It is not difficult to understand that when the light intensity received by the second shooting component 320 is at the maximum value, it means that the length of the screw 20 is too short, and the screw rod of the screw 20 does not block the light emitted by the first shooting component 310; when the light intensity received by the second shooting component 320 is 0, it means that the length of the screw 20 is too long, and the screw rod of the screw 20 completely blocks the light emitted by the first shooting component 310; when the light intensity received by the second shooting component 320 is between 0 and the maximum value, it means that the length of the screw 20 is moderate and only blocks part of the light.

[0060] Furthermore, to more accurately determine whether the length of the screw 20 is acceptable, in a preferred embodiment, the first radiation assembly 310 includes a first emitting element 311 and a second emitting element 312 spaced apart in the vertical direction (i.e., the Z direction shown in the figure). Correspondingly, the second radiation assembly 320 includes a first receiving element 321 and a second receiving element 322 spaced apart in the vertical direction, with the first receiving element 321 being disposed opposite the first emitting element 311, and the second receiving element 322 being disposed opposite the second emitting element 312. The first emitting element 311 and the second emitting element 312 are each connected to an optical fiber, thereby emitting light, and the first receiving element 321 and the second receiving element 322 are each connected to an optical fiber, thereby respectively receiving the light emitted by the first emitting element 311 and the second emitting element 312. In this way, when both the first receiving element 321 and the second receiving element 322 cannot receive light, it means that the screw 20 is too long; when the first receiving element 321 and the second receiving element 322 can receive light, it means that the screw 20 is too short; and when the first receiving element 321 cannot receive light and the second receiving element 322 can receive light, it means that the bottom end of the screw 20 is located between the two rays of light, indicating that the length of the screw 20 is qualified.

[0061] Preferably, the spacing between the first emitting element 311 and the second emitting element 312 is 2 mm, and the spacing between the first receiving element 321 and the second receiving element 322 is also 2 mm. This shortens the distance between the two emitted light beams, enabling a more accurate determination of the acceptable length of the screw 20. Of course, the spacing between the first emitting element 311 and the second emitting element 312, and the spacing between the first emitting element 311 and the second emitting element 312, is not limited to 2 mm and may be any other value. These values ​​can be set as needed and are not limited here.

[0062] On the basis of the above embodiment, the first radiation component 310 and the second radiation component 320 are movably arranged on the fixing base 100, that is, the positions of the first radiation component 310 and the second radiation component 320 in the vertical direction or the first horizontal direction are respectively adjustable, so that the first emitting element 311 and the first receiving element 321, and the second emitting element 312 and the second receiving element 322 can be respectively located on the same horizontal plane, ensuring that the first receiving element 321 and the second receiving element 322 can fully receive the light and eliminate unnecessary errors.

[0063] Furthermore, the control module is also communicatively connected to the first power source 410 and the second power source 420. In this way, the control module can control the operation of the first power source 410 and the second power source 420 to enable the pushing block 200 to receive the material, and after judging whether the screw length is qualified according to the detection result of the material detection mechanism 300, drive the first power source 410 and the second power source 420 to operate again, so that the pushing block 200 can move and stay at the first screening position 103 or the second screening position 104, thereby completing the screening of the screws.

[0064] In addition, since the screws are relatively small, in order to prevent the screws from being scattered everywhere, it is convenient for the screws to enter the pushing block 200 and to collect qualified screws and unqualified screws, please continue to refer to Figure 1 and Figure 2 The receiving port 105 is connected to a receiving pipe 1100, which has a receiving channel therein. The first blanking port 106 is connected to a first discharge pipe 1200, which has an OK channel therein. The second blanking port 107 is connected to a second discharge pipe 1300, which has an NG channel therein. This ensures that when the push block 200 is located at the receiving position 102, the screws to be tested can accurately enter the push block 200 along the receiving channel. When the push block 200 is located at the first screening position 103, all qualified screws can flow out along the OK channel and enter the next workstation (e.g., a screw tightening device). When the push block 200 is located at the second screening position 104, all unqualified screws can flow out along the NG channel and be collected.

[0065] Furthermore, if Figure 1 and Figure 2 As shown, the receiving pipe 1100, the first discharge pipe 1200 and the second discharge pipe 1300 are respectively provided with a drop sensor 1400 to determine whether the screws pass through the receiving channel, whether qualified screws pass through the OK channel, and whether unqualified screws pass through the NG channel.

[0066] Of course, it is understandable that the receiving pipe 1100, the first discharge pipe 1200 and the second discharge pipe 1300 can be selectively set as needed, and the drop sensor 1400 can also be selectively set. For example, only any one or two of the receiving pipe 1100, the first discharge pipe 1200 and the second discharge pipe 1300 can be set with the drop sensor 1400. This is not limited here, but it is obvious that the receiving pipe 1100, the first discharge pipe 1200 and the second discharge pipe 1300 are all set, and the drop sensor 1400 is provided on all three.

[0067] Furthermore, in order to make the qualified screws flow to the next station faster, Figure 1 and Figure 10As shown, the material detection and screening device 10 also includes a blowing mechanism 1600. The fixed seat 100 is provided with a blowing connector 1500 at the first screening position 103. The blowing connector 1500 is connected to the blowing mechanism 1600 through a pipeline. For example, the blowing mechanism 1600 is a vacuum solenoid valve. When the blanking sensor 1400 arranged on the first blanking pipe 1200 detects that a qualified screw passes through the OK material channel, the vacuum solenoid valve can be opened to blow air toward the first blanking port 106, so that the blown gas enters the OK material channel, thereby accelerating the flow of qualified screws and allowing them to be quickly blown to the next workstation.

[0068] Similarly, the second screening position 104 may also be provided with an air blowing joint 1500 connected to the second blanking port 107 so that unqualified screws can flow and gather faster, which will not be described in detail here.

[0069] In addition, since most of the screws to be tested are covered with dust, in order to remove the dust attached to the screws, Figure 1 and Figure 11 In the illustrated embodiment, the material detection and screening device 10 further includes a cleaning mechanism 1800. The fixing base 100 is provided with a cleaning connector 1700 at a position corresponding to the material receiving position 102, which is connected to the cavity 101. A pipeline of the cleaning mechanism 1800 is connected to the cleaning connector 1700. For example, in one embodiment, the cleaning mechanism 1800 is a vacuum generator. When a screw falls into the guide groove 201 of the push block 200, the vacuum generator is activated to suck away dust attached to the screw, thereby cleaning the screw.

[0070] It can be seen that the material detection and screening device provided by the present application can realize automatic detection of materials, and automatically screen qualified materials and unqualified materials. Therefore, when the material is a screw, screws of non-specified length can be removed to ensure that the length of the screws entering the screw tightening device is consistent, thereby avoiding the situation where the screws are poorly locked. Therefore, floating nails can be reduced during the locking process of the screws (that is, the phenomenon that the tightening torque reaches the preset target torque before the clamping force is generated during the tightening process of the screws), effectively ensuring the quality of the product and improving the qualified rate of the product; at the same time, by setting a cleaning mechanism, dust and dirt on the surface of the screw can also be effectively cleaned.

[0071] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0072] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A material detection and screening device, characterized in that: include: A fixed seat (100), wherein a cavity (101) is provided in the fixed seat (100), wherein the cavity (101) has a material receiving position (102), a first screening position (103), and a second screening position (104) spaced apart from each other in a first horizontal direction, and wherein the cavity (101) has a material receiving opening (105), a first material dropping opening (106), and a second material dropping opening (107) respectively provided on the cavity wall corresponding to the material receiving position (102), the first screening position (103), and the second screening position (104); a pushing block (200) movably disposed in the cavity (101); A driving mechanism (400) comprises a first power source (410) and a second power source (420) arranged opposite to each other along the first horizontal direction, wherein at least one of the first power source (410) and the second power source (420) is used to move the pushing block (200) and stop it at one of the first screening position (103), the second screening position (104) and the material receiving position (102); A material detection mechanism (300) is provided on the fixing seat (100), and is used for detecting whether the material falling into the pushing block (200) from the material receiving port (105) is qualified when the pushing block (200) moves to the material receiving position (102).

2. The material detection and screening device according to claim 1, characterized in that: The pushing block (200) is connected to the first power source (410), the first power source (410) is used to drive the pushing block (200) to move, and the second power source (420) is used to block the movement of the pushing block (200) so that the pushing block (200) can stop at one of the middle positions among the material receiving position (102), the first screening position (103) and the second screening position (104).

3. The material detection and screening device according to claim 1, characterized in that: The first power source (410) and the second power source (420) are in contact with opposite sides of the push block (200) in the first horizontal direction, so that one of the first power source (410) or the second power source (420) can push the push block (200) to move, and the other of the first power source (410) or the second power source (420) can stop the push block (200) at one of the first screening position (103), the second screening position (104) and the material receiving position (102).

4. The material detection and screening device according to claim 1, characterized in that: Two clamping rods (500) extending along the first horizontal direction and parallel to each other are provided in the cavity (101), a slot (501) is formed between the two clamping rods (500), each of the clamping rods (500) is provided with a blanking slot (502) at a position facing the other clamping rod (500) and corresponding to the first screening position (103) and the second screening position (104), and each of the clamping rods (500) is passed through the pushing block (200).

5. The material detection and screening device according to claim 4, characterized in that: The fixing seat (100) is provided with a third power source (800) below the material receiving position (102), and the output end of the third power source (800) is connected to a lifting column (900). The lifting column (900) can rise in the vertical direction and extend into the pushing block (200) under the drive of the third power source (800) so that the material can stay in the pushing block (200); the two clamping rods (500) are movably connected to the side walls of the cavity (101) and can approach or move away from each other along a second horizontal direction perpendicular to the first horizontal direction to change the size of the card slot (501) in the second horizontal direction.

6. The material detection and screening device according to claim 1, characterized in that: The material detection mechanism (300) comprises a first beamforming component (310) and a second beamforming component (320) which are arranged relative to each other along a second horizontal direction perpendicular to the first horizontal direction, wherein the first beamforming component (310) is used to emit light, and the second beamforming component (320) is used to receive light. The material detection and screening device further comprises a control module which is communicatively connected to the second beamforming component (320), and the control module is capable of judging whether the length of the material is qualified based on the intensity of the light received by the second beamforming component (320).

7. The material detection and screening device according to claim 6, characterized in that: The first radiation component (310) includes a first radiation element (311) and a second radiation element (312) spaced apart in a vertical direction, and the second radiation component (320) includes a first receiving element (321) and a second receiving element (322) spaced apart in the vertical direction, wherein the first receiving element (321) is arranged opposite to the first radiation element (311), and the second receiving element (322) is arranged opposite to the second radiation element (312).

8. The material detection and screening device according to claim 1, characterized in that: The material detection and screening device further comprises a cleaning mechanism (1800); the fixing seat (100) is provided with a cleaning joint (1700) connected to the cavity (101) at a position corresponding to the material receiving position (102); and a pipeline of the cleaning mechanism (1800) is connected to the cleaning joint (1700).

9. The material detection and screening device according to claim 1, characterized in that: The material detection and screening device also includes an air blowing mechanism (1600), and the fixed seat (100) is provided with an air blowing joint (1500) connected to the first drop-out port (106) at the first screening position (103), and / or is provided with an air blowing joint (1500) connected to the second drop-out port (107) at the second screening position (104), and the air blowing joint (1500) pipeline is connected to the air blowing mechanism (1600).

10. The material detection and screening device according to claim 1, characterized in that: The material receiving port (105) is connected to a material receiving pipe (1100), and / or the first material dropping port (106) is connected to a first material discharge pipe (1200), and / or the second material dropping port (107) is connected to a second material discharge pipe (1300); a material drop sensor (1400) is provided on at least one of the material receiving pipe (1100), the first material discharge pipe (1200) and the second material discharge pipe (1300).

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