A cleaning device with dual-nail detection function

Abstract

This invention discloses a cleaning device with a double-nail detection function, comprising a housing with an opening groove and a slider inside the opening groove. A nail-receiving tube is located at the bottom of the housing, and a first nail-feeding tube is located at the top of the housing. A second nail-feeding tube is located at the upper end of the first nail-feeding tube. Both the first nail-feeding tube and the nail-receiving tube are connected to the opening groove of the housing. One side of the housing is connected to a filter via a pipe, and the filter is connected to a vacuum generator via a pipe. A cylinder is located on the other side of the housing, and the output end of the cylinder is connected to the slider. Through-beam sensors are located on both sides of the top of the opening groove. This invention has high reliability, prevents multiple nails from entering the next stage, and is reliable in application.

Description

Technical Field

[0001] This invention relates to screw cleaning devices, and more specifically to a cleaning device with a dual-screw detection function. Background Technology

[0002] Industrial automation technology is increasingly being applied to various fields as a core technology in modern enterprise production. In the automotive and other parts assembly industries, automated screw tightening technology is gradually replacing traditional manual tightening due to its reliability, efficiency, and traceability, effectively solving the problems of low efficiency and high workload in parts assembly.

[0003] During the assembly process on the production line, each step, such as blowing, cleaning, testing, screw storage and adsorption, and tightening, is performed on a single screw. However, during normal production cycles, there may be occasional power outages or periodic maintenance requiring a shutdown and restart. In such cases, there may be occasional instances where two screws are present in the pipeline at the same time. It is necessary to promptly identify and remove the excess screws, otherwise they will flow into the downstream process, causing equipment failure and the outflow of defective products. For example, the screw dust cleaning device disclosed in Chinese Patent Application No. 2017215871610 only serves a cleaning function, but it cannot prevent the presence of two screws at the same time, resulting in defective products. Summary of the Invention

[0004] This invention provides a cleaning device with a double-nail detection function, which is highly reliable, prevents multiple nails from entering the next stage, and is reliable in application.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A cleaning device with dual-nail detection function includes a housing with an opening slot and a slider inside the opening slot. A nail receiving tube is provided at the bottom of the housing, and a first nail feeding tube is provided at the top of the housing. A second nail feeding tube is provided at the upper end of the first nail feeding tube. Both the first nail feeding tube and the nail receiving tube are connected to the opening slot of the housing. One side of the housing is connected to a filter through a pipe, and the filter is connected to a vacuum generator through a pipe. A cylinder is provided on the other side of the housing, and the output end of the cylinder is connected to the slider. Through-beam sensors are provided on both sides of the top of the opening slot.

[0007] Preferably, a vertically arranged slit is provided on one side of the feeding tube, a connecting seat is installed at one end of the slider, a top block is installed on the top of the connecting seat, one side of the top block passes through the slit, and the connecting seat is located outside the slit.

[0008] Preferably, the upper end of the slider facing the cylinder is provided with a connecting seat mounting groove, the connecting seat is installed in the connecting seat mounting groove, and the output end of the cylinder is connected to the lower end of the slider.

[0009] Preferably, side plates are installed on both sides of the housing, the cylinder is installed on the side plates, and the through-beam sensor is installed on the side plates.

[0010] Preferably, a top block mounting groove is provided at the top center of the connecting seat, the top block is installed in the top block mounting groove, and the top block is connected to the connecting seat by bolts.

[0011] Preferably, proximity switches are installed at the top and bottom of the cylinder, respectively. The proximity switch at the top of the cylinder is a home position proximity switch, and the proximity switch at the bottom of the cylinder is an extended position proximity switch. The distance between the extended position proximity switch and the slider is less than the distance between the home position proximity switch and the slider.

[0012] Preferably, the slider is provided with a vertically arranged screw through hole, the diameter of which is greater than or equal to the inner diameter of the screw feeding tube and the screw receiving tube.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] This invention can effectively solve the current problems in the nail feeding process, detect double nail faults, and ensure the safety and reliability of the nail feeding process. It can be applied to the upgrading and transformation of existing production lines, has wide applicability, greatly improves production efficiency and reduces detection costs, is reliable in operation, and has a high degree of automation. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of an embodiment of the present invention.

[0016] Figure 2 This is a schematic diagram of the outer casing of an embodiment of the present invention. Figure 1 .

[0017] Figure 3 This is a schematic diagram of the outer casing of an embodiment of the present invention. Figure 2 .

[0018] Figure 4 This is a schematic diagram of a nail feeding tube according to an embodiment of the present invention.

[0019] Figure 5 This is a schematic diagram of the combination of slider, connecting seat and top block in an embodiment of the present invention.

[0020] Figure 6 This is a cross-sectional view of the normal blocking position in an embodiment of the present invention.

[0021] Figure 7 This is a normal cross-sectional view of an embodiment of the present invention.

[0022] Figure 8 This is a cross-sectional view of the double-pin fault location according to an embodiment of the present invention. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0024] As shown in the figure, this invention discloses a cleaning device with a dual-nail detection function, including a housing 1. The housing 1 has an opening slot 101, within which a slider 2 is disposed. A nail-receiving tube 3 is located at the bottom of the housing 1, and a first nail-feeding tube 4 is located at the top of the housing 1. A second nail-feeding tube 5 is located at the upper end of the first nail-feeding tube 4. Both the first and second nail-feeding tubes 4 and 5 are connected to the opening slot of the housing. One side of the housing 1 is connected to a filter 6 via a pipe, and the filter 6 is connected to a vacuum generator 7 via a pipe. A cylinder 8 is located on the other side of the housing 1, and the output end of the cylinder 8 is connected to the slider 2. Through-beam sensors 9 are located on both sides of the top of the opening slot 101. An amplifier can also be installed at the through-beam sensors 9. The through-beam sensors 9 are used to detect whether there is a screw below the first nail-feeding tube 4. If a screw is found, a signal is sent to the previous station to prevent further screw feeding to the second nail-feeding tube 5. Simultaneously, a signal is sent downstream, activating the vacuum generator 7 to create negative pressure, thereby removing dust and other contaminants from the surface of the screw A, achieving cleaning. Then cylinder 8 works, slider 2 stops blocking the nail feeding tube 4, and screw A falls into the nail receiving tube 3.

[0025] In one embodiment of the present invention, a vertically arranged slit 41 is provided on one side of the feeding tube 4. A connecting seat 10 is installed at one end of the slider 2, and a top block 11 is installed on the top of the connecting seat 10. One side of the top block 11 passes through the slit 41, and the connecting seat 10 is located outside the slit 41. After the screw A is cleaned, the cylinder 8 operates, driving the slider 2 to its limit position, so that the screw A falls into the receiving tube 3. At the same time as the cylinder 8 operates, the slider 2 also drives the connecting seat 10 and the top block 11 to move, and the top block 11 will move into the slit 41 of the feeding tube 4. If there are multiple screws in the feeding tube 4, and due to the diameter design of the feeding tube 4, the screws A can only be stacked vertically, then the upper screw A will block the movement of the top block 11 in the feeding tube 4, and will also block the movement of the slider 2. This causes the slider 2 to be unable to move to the designated position, thus allowing the determination of whether there are at least two screws A in the feeding tube 4.

[0026] In one embodiment of the present invention, the upper end of the slider 2 facing the cylinder 8 is provided with a connecting seat mounting groove, the connecting seat 10 is installed in the connecting seat mounting groove, and the output end of the cylinder 8 is connected to the lower end of the slider 2.

[0027] In one embodiment of the present invention, side plates 12 are respectively installed on both sides of the outer casing 1, the cylinder 8 is installed on the side plate 12, and the through-beam sensor 9 is installed on the side plate 12. The through-beam sensor 9 is used to detect whether there is a screw A at the bottom of the screw feeding tube 4. Due to the structure of the through-beam sensor 9, it can only detect one screw A.

[0028] In one embodiment of the present invention, a top block mounting groove 1001 is provided at the top center of the connecting seat 10, and a top block 11 is installed in the top block mounting groove 1001. The top block 11 and the connecting seat 10 are connected by bolts.

[0029] In one embodiment of the present invention, proximity switches are respectively installed at the top and bottom of the cylinder 8. The proximity switch at the top of the cylinder is a home position proximity switch 13, and the proximity switch at the bottom of the cylinder is an extended position proximity switch 14. The distance between the extended position proximity switch 14 and the slider is less than the distance between the home position proximity switch 13 and the slider. The proximity switches can be selected as SMT / SME-8 model proximity switches, which are used to sense the piston position inside the cylinder. When the home position proximity switch 13 senses the piston signal, the slider is in its initial position, and the blocking screw falls. When the extended position proximity switch 14 senses the piston signal, the slider 2 is in a position where the screw A can pass through, and the screw A falls into the connecting tube 3 to enter the next station.

[0030] In one embodiment of the present invention, the slider 2 is provided with a vertically arranged screw through hole 201, the diameter of which is greater than or equal to the inner diameter of the screw feeding tube and the screw receiving tube.

[0031] The work process is as follows:

[0032] Screw insertion and cleaning

[0033] like Figure 6 If the through-beam sensor detects no signal, the in-situ proximity switch 13 sends a nailing signal upstream. The screw enters the nail feeding tube 4 through the nail feeding tube 2 5 and stops under the obstruction of the nail feeding tube 4 and the slider 2. The through-beam sensor detects a signal, and then the vacuum generator 7 works to form a negative pressure around the screw A through the filter, cleaning the screw surface.

[0034] Screw delivery

[0035] like Figure 7 When screw A is cleaned, cylinder 8 extends, the extension position proximity switch 14 receives a signal, and the screw on slider 2 aligns with the opening of the nail receiving tube 3 and the nail feeding tube 4 through hole 201. The top block 11 extends into the slit 41 of the nail feeding tube 4 to ensure that there is no screw A at the upper end. Screw A falls to the nail receiving tube 3 by gravity and enters the next nail feeding stage.

[0036] Fault detection

[0037] like Figure 8 After the screws are cleaned, the cylinder extends and pushes the slider, which in turn drives the connecting seat 10 and the top block 11. When there are screws above the screws, the screws above will block the top block 11, preventing the cylinder from extending to the correct position. The extension position proximity switch 14 will not give a signal and will alarm. Please manually remove the two screws to restore normal operation.

[0038] The above description is merely an example and illustration of the structure of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described, or use similar methods to replace them, as long as they do not deviate from the structure of the present invention or exceed the scope defined in the claims, all of which should fall within the protection scope of the present invention.

Claims

1. A cleaning device with dual-nail detection function, characterized in that: The device includes an outer casing with an opening slot containing a slider. The bottom of the casing has a nail receiving tube, and the top of the casing has a first nail feeding tube. The upper end of the first nail feeding tube has a second nail feeding tube. Both the first nail feeding tube and the nail receiving tube are connected to the opening slot of the casing. One side of the casing is connected to a filter via a pipe, and the filter is connected to a vacuum generator via a pipe. The other side of the casing has a cylinder, and the output end of the cylinder is connected to the slider. Optical sensors are located on both sides of the top of the opening slot. One side of the feeding tube is provided with a vertically arranged slit, one end of the slider is equipped with a connecting seat, the top of the connecting seat is equipped with a top block, one side of the top block passes through the slit, and the connecting seat is located outside the slit. The upper end of the slider facing the cylinder is provided with a connecting seat mounting groove, the connecting seat is installed in the connecting seat mounting groove, and the output end of the cylinder is connected to the lower end of the slider. Side plates are installed on both sides of the housing, the cylinder is installed on the side plates, and the through-beam sensor is installed on the side plates; The top center of the connector is provided with a top block mounting groove, the top block is installed in the top block mounting groove, and the top block is connected to the connector by bolts; Proximity switches are installed at the top and bottom of the cylinder. The proximity switch at the top of the cylinder is the home position proximity switch, and the proximity switch at the bottom of the cylinder is the extended position proximity switch. The distance between the extended position proximity switch and the slider is less than the distance between the home position proximity switch and the slider. The work process is as follows: If the through-beam sensor detects no signal, the in-situ proximity switch sends a nailing signal upstream. The screw enters the nail feeding tube one through the nail feeding tube two and stops under the action of the nail feeding tube one and the slider. The through-beam sensor detects a signal, and then the vacuum generator works to form a negative pressure around the screw through the filter, cleaning the screw surface. After the screws are cleaned, the cylinder extends, the extension position proximity switch signals, the screw on the slider aligns with the opening of the receiving tube and the first feeding tube through the hole, the top block extends into the slit of the first feeding tube to ensure that there are no screws at the top, the screw falls to the receiving tube by gravity and enters the next feeding stage. After the screws are cleaned, the cylinder extends and pushes the slider, which in turn drives the connecting seat and the top block. When there are screws above the screw, the screw above will block the top block, preventing the cylinder from extending to the full position. The extension position proximity switch will not give a signal and will alarm. Please manually remove the two screws to restore normal operation.

2. A cleaning device with dual-nail detection function according to claim 1, characterized in that: The slider is provided with a vertically arranged screw through hole, the diameter of which is greater than or equal to the inner diameter of the screw feeding tube and the screw receiving tube.

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