Spring feeding device for automobile electromagnetic valve production

Abstract

The application discloses a spring feeding equipment for automobile electromagnetic valve production and belongs to the technical field of spring assembly. The spring feeding equipment comprises a feeding disc, a vibrating motor is arranged at the bottom of the feeding disc, a guide rail is fixedly installed on the inner wall of the feeding disc, and a discharging rail is fixedly installed at one end of the guide rail.

Description

Technical Field

[0001] This invention relates to the field of spring assembly technology, specifically a spring feeding device for the production of automotive solenoid valves. Background Technology

[0002] Solenoid valves are widely used in the automotive industry. During the production process of automotive solenoid valves, springs need to be installed. During the installation process, springs need to be fed, removed, and installed on the solenoid valve. The existing springs are stored in a messy state, and it takes a lot of time to pick up and move the springs. The efficiency of picking up, placing, and moving springs is low. When the existing automatic feeding device drops the springs, the position is inaccurate, and they are prone to tilting or jamming, which affects the subsequent splicing.

[0003] Therefore, there is an urgent need to develop a spring feeding device for the production of automotive solenoid valves to solve the problems in the existing technology. Summary of the Invention

[0004] The purpose of this invention is to provide a spring feeding device for the production of automotive solenoid valves, which can realize automatic spring arrangement, one-by-one blocking and precise loading; prevent springs from falling and getting stuck by the timing coordination of the toggle rod and the limit post; automatically lubricate and use the rotation of the limit post to evenly apply oil, reduce friction and wear, and improve assembly smoothness; the multi-station design of the turntable realizes continuous and rapid feeding, improves production efficiency, and solves the problems of disordered spring arrangement, easy jamming and inconvenient lubrication mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A spring feeding device for automotive solenoid valve production includes a feeding tray. A vibration motor is mounted at the bottom of the feeding tray, and a guide rail is fixedly installed on its inner wall. A discharge rail is fixedly installed at one end of the guide rail. A bracket is provided on one side of the feeding tray, and a guide tube and a lubrication assembly are fixedly installed on the bracket. A turntable is located below the guide tube, and a drive motor is connected to the bottom of the turntable. The guide tube includes a shrinking cylinder and a holding cylinder. The inlet end of the shrinking cylinder receives the discharge rail, and the bottom of the shrinking cylinder is connected to the top of the holding cylinder. The inner diameter of the bottom end of the shrinking cylinder is equal to and larger than the outer diameter of the spring than the inner diameter of the holding cylinder. The bottom of the holding cylinder has an opening... The flow channel has an installation groove on its inner wall, and a stop block is rotatably installed in the installation groove. A torsion spring is sleeved on the rotating shaft of the stop block, and the torsion spring keeps one end of the stop block extending into the interior of the retention cylinder. The lubrication assembly includes an oil box fixed on a bracket, an oil felt placed in the oil box, and a micro pump fixed on the oil box. The micro pump is used to spray the lubricating oil in the oil box onto the oil felt. A limit post is rotatably installed on the top surface of the turntable, and a toggle rod is fixedly installed thereon. The limit post and the toggle rod rotate synchronously with the turntable. The oil felt is located on the rotation path of the limit post, so that the limit post contacts the oil felt and applies lubricating oil before rotating into the flow channel.

[0006] By adopting the above technical solution, the springs are automatically arranged by the vibration of the feeding disc. The inner diameter of the shrinking cylinder and the dwell cylinder of the guide tube are matched to make the springs fall one by one. The stop block and the torsion spring can temporarily block the springs. With the help of the limit post and the lever on the turntable, the springs are accurately released and put on one by one. The lubrication component automatically applies lubricating oil to the limit post through a micro pump and oil felt. This not only makes the spring fit smoothly, but also wipes the lubricating grease on the limit post onto the inner ring surface of the spring. The lubricating grease is "carried" by the spring from the limit post to the friction surface inside the solenoid valve, realizing the lubrication of the spring and the inside of the solenoid valve.

[0007] As a further aspect of the present invention: the flow channel is a notch opened upward at the bottom edge of the retention cylinder, and the width of the notch is greater than the outer diameter of the limiting post.

[0008] By adopting the above technical solution, the flow channel is designed as a notch extending upwards from the bottom edge of the stop cylinder, and its width is greater than the outer diameter of the limiting post. This facilitates the limiting post to rotate from the side into the bottom of the stop cylinder to receive the spring, avoiding structural interference and making the material dropping action smoother and more reliable.

[0009] As a further aspect of the present invention: the stop block is rotatably mounted in the mounting groove via a rotating shaft, and the torsion spring is sleeved on the rotating shaft, with one end abutting against the stop block and the other end abutting against the inner wall of the mounting groove.

[0010] By adopting the above technical solution, the stop block is installed with a torsion spring via a rotating shaft. The two ends of the torsion spring abut against the stop block and the inner wall of the mounting groove, respectively, which can provide a stable elastic restoring force for the stop block, ensuring that the stop block reliably blocks the spring under normal conditions and only opens when the lever is pushed, ensuring that the timing of the spring release is accurate.

[0011] As a further aspect of the present invention: the limiting post and the actuating rod are arranged at intervals in the circumferential direction of the turntable, such that in the rotation direction of the turntable, the actuating rod approaches the stop cylinder before the limiting post, and when the limiting post is fully rotated into the flow channel, the actuating rod pushes the stop block completely into the mounting groove.

[0012] By adopting the above technical solution, the limiting post and the actuating rod are circumferentially spaced, so that the actuating rod first approaches the stop cylinder to push the stop block open, and the limiting post then fully rotates into the flow channel, ensuring that the spring falls on the limiting post at the moment the stop block opens, thereby achieving the timing matching of pushing and receiving the material and preventing the spring from falling off or getting stuck.

[0013] As a further aspect of the present invention: the limiting post is rotatably mounted on the turntable via a bearing, so that the limiting post rotates relative to the turntable after contacting the roofing felt.

[0014] By adopting the above technical solution, the limiting post is installed by rotating the bearing. When it comes into contact with the oil felt, it can rotate on its own, so that the lubricating oil is evenly coated on the entire circumference of the limiting post, improving the uniformity of lubrication and reducing the friction when the spring is inserted and the local wear of the limiting post.

[0015] As a further aspect of the present invention: the outer diameter of the limiting post is smaller than the inner diameter of the spring to be fed, so that the spring is fitted onto the limiting post with a clearance fit.

[0016] By adopting the above technical solution, the outer diameter of the limiting post is smaller than the inner diameter of the spring and is fitted with a clearance fit, so that the spring can be smoothly and unobstructedly fitted onto the limiting post, which facilitates subsequent transfer or assembly.

[0017] As a further aspect of the present invention: the oil box has an opening on the side near the center of the turntable, and a portion of the oil felt extends out of the opening to contact the limiting post.

[0018] By adopting the above technical solution, an opening is set on the side of the oil box near the center of the turntable, and the oil felt extends out of the opening to ensure that the oil felt accurately contacts the rotating limit post. At the same time, the oil box plays a protective and oil storage role, reducing lubricant loss and contamination.

[0019] As a further aspect of the present invention: the turntable has a plurality of limiting posts evenly distributed along its circumference and a toggle lever corresponding to each limiting post.

[0020] By adopting the above technical solution, multiple limit posts and corresponding actuating rods are evenly distributed on the turntable, which can complete multiple material receiving actions within one revolution, improve the material feeding speed and production efficiency, and realize continuous high-speed material feeding.

[0021] As a further aspect of the present invention: the inlet of the micro pump is connected to the inside of the oil box, and the outlet faces the oil felt, so as to spray lubricating oil onto the oil felt.

[0022] By adopting the above technical solution, the micro pump actively sprays lubricating oil onto the oil felt, and oil can be replenished periodically or as needed to keep the oil felt continuously moist and ensure stable coating effect.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows: through the coordinated cooperation of the feeding tray, guide tube, stop block, and turntable upper limit post and actuating rod, the springs are automatically arranged, blocked one by one, and precisely released and picked up; by utilizing the timing design of the actuating rod and the limit post, the spring is just placed on the limit post when the stop block is opened, effectively preventing it from falling or getting stuck; by using the oil felt of the lubrication component to contact the limit post, automatic lubrication is achieved to reduce friction and wear and improve assembly smoothness; multiple limit posts and actuating rods are evenly distributed on the turntable to achieve continuous and rapid feeding, greatly improving production efficiency.

[0024] Other features and advantages of the present invention will be disclosed in detail in the following detailed description and accompanying drawings. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure in an embodiment of the present invention; Figure 2 This is a top view of the overall structure in an embodiment of the present invention; Figure 3 This is a schematic diagram of the internal structure of the feed tube in an embodiment of the present invention.

[0026] The attached figures are labeled as follows: 1. Feeding tray; 101. Vibrating motor; 102. Guide rail; 2. Discharge rail; 3. Support; 4. Guide pipe; 401. Shrink cylinder; 402. Dwelling cylinder; 403. Flow channel; 404. Stop block; 405. Torsion spring; 406. Mounting slot; 5. Lubrication assembly; 501. Oil box; 502. Oil felt; 503. Micro pump; 6. Turntable; 601. Limiting post; 602. Actuating rod; 7. Drive motor. Detailed Implementation

[0027] 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 some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] In this embodiment of the invention, a spring feeding device for automotive solenoid valve production is described, see [link to relevant documentation]. Figure 1-3 As shown, the device includes a feeding tray 1, a guide pipe 4, a lubrication assembly 5, a turntable 6, and a drive device. The feeding tray 1 is a round bucket-shaped container with an open top. A vibration motor 101 is fixed at the center of the bottom. The vibration motor 101 is elastically supported on the frame by a base. The inner wall of the feeding tray 1 is provided with a spirally rising guide rail 102. The guide rail 102 extends from the bottom of the tray to the edge of the tray body and is smoothly connected to the discharge rail 2 at its end. The discharge rail 2 is a narrow and long channel. Its width is slightly larger than the outer diameter of the spring but less than twice the length of the spring. This allows the springs to pass through one by one in a single row along the length of the discharge rail after vibration and to enter the guide pipe 4.

[0029] In this embodiment, the bracket 3 is fixed to the outside of the feeding tray 1, and the guide tube 4 and the lubrication component 5 are both installed on the bracket 3. The guide tube 4 is arranged vertically and is composed of a shrinking cylinder 401 and a stopping cylinder 402. The shrinking cylinder 401 is a cone-shaped or arc-shaped funnel structure with a larger upper part and a smaller lower part. The width of its upper inlet is greater than the outlet of the discharge rail 2, and it receives the springs sent by the discharge rail 2. The inner wall of the shrinking cylinder 401 is smoothly transitioned, and the inner diameter of its lower end is consistent with the inner diameter of the stopping cylinder 402. The stopping cylinder 402 is a vertical circular tube, and its inner diameter is only 0.5mm to 1.5mm larger than the outer diameter of the spring to be fed, so as to ensure that the spring can fall freely into the stopping cylinder 402 without tilting or jamming or multiple springs being squeezed in due to excessive gap. The inner diameter of the stopping cylinder 402 is machined to be consistent with the inner diameter of the bottom end of the shrinking cylinder 401. The two are connected by welding or integral molding, and there are no steps at the joint of the inner wall to avoid snagging the spring.

[0030] In this embodiment, a flow groove 403 is provided on one side of the bottom of the stop cylinder 402. The flow groove 403 is a notch cut upward from the bottom edge of the stop cylinder 402. The width is greater than the outer diameter of the limiting post 601, and the single-sided gap is 1mm to 3mm, so that the limiting post 601 can be horizontally rotated from the side to replace the bottom of the stop cylinder 402 and support the spring. The height of the flow groove 403 is at least greater than the free length of a spring, ensuring that the spring can be completely fitted onto the limiting post 601 without excessive constraints.

[0031] In this embodiment, an installation groove 406 is formed on the inner wall of the top of the inner diameter flow channel 403 of the residence cylinder 402. The installation groove 406 is a recessed groove from the inner wall outward. A stop block 404 is rotatably installed inside the groove via a horizontal rotating shaft. The stop block 404 is elongated and has a protruding rotating shaft at its top. A torsion spring 405 is sleeved on the rotating shaft. One end of the torsion spring 405 is engaged in a slot on the side of the stop block 404, and the other end abuts against the inner wall step of the installation groove 406. In the natural state of the torsion spring 405, the front end of the stop block 404 extends into the inner hole of the residence cylinder 402, with an extension length of about 1 / 4 to 1 / 3 of the inner diameter, which is sufficient to block the spring that is stuck there. When the stop block 404 is pushed by an external force, it can swing outward around the rotating shaft and completely retract into the installation groove 406, thereby releasing the spring.

[0032] In this embodiment, the lubrication assembly 5 includes an oil box 501, an oil felt 502, and a micro pump 503. The oil box 501 is fixed to the bracket 3 by screws and is located in the inner area above the turntable 6. The oil box 501 is a well-sealed shell that stores grease or lubricating oil suitable for the solenoid valve. A rectangular opening is provided on one side wall of the oil box 501 near the center of the turntable 6. A part of the oil felt 502 extends out through this opening and moves towards the movement path of the limiting post 601. The main body of the oil felt 502 remains inside the oil box 501, serving to store and guide oil. The micro pump 503 is preferably a micro peristaltic pump or a micro gear pump. Its inlet extends into the bottom of the oil box 501 through an oil suction pipe, and its outlet extends to the top of the oil felt 502 through a thin tube, applying lubricating oil to the oil felt 502 in an intermittent spray or drip manner.

[0033] In this embodiment, the turntable 6 is a horizontal disc, the center of which is fixedly connected to the output shaft of the drive motor 7. The drive motor 7 is mounted on a fixed base below. On the top surface of the turntable 6 near the edge, a plurality of limiting posts 601 are mounted in a circumferentially rotatable manner. Specifically, the turntable 6 has stepped holes and rolling bearings are installed inside. The lower end of the limiting post 601 is tightly fitted with the inner ring of the bearing through a journal, so that the limiting post 601 can both revolve with the turntable 6 and rotate around its own axis. Each limiting post 601 has a toggle rod 602 fixed to its side. The toggle rod 602 is a vertically arranged cylinder or strip, its position height corresponds to the stop block 404, and there is a fixed circumferential offset from the limiting post 601. The outer diameter of the limiting post 601 is 0.2mm to 1.0mm smaller than the inner diameter of the spring, forming a clearance fit to ensure that the spring can be smoothly fitted without excessive tilting and shaking.

[0034] Understandably, in the initial stage, springs are fed into the feeding tray 1 in batches, and the vibrating motor 101 is started. The springs spiral upward along the guide rail 102 and gradually arrange themselves into a single row with the axis horizontal. They slide into the shrinking cylinder 401 via the discharge rail 2. The shrinking cylinder 401 changes the springs from horizontal to vertical, and they enter the holding cylinder 402 in a single continuous queue. The bottom spring is blocked by the extended stop 404 and stays in the holding cylinder 402. The drive motor 7 drives the turntable 6 to rotate. A limiting post 601 first passes through and contacts the area of ​​the roofing felt 502. The rotating post 601 is evenly coated with lubricating oil. Then, the limiting post 601 continues to rotate. When the matching actuating rod 602 touches the stop block 404, it begins to push the stop block 404 to open. At the same time, the limiting post 601 rotates into the flow channel 403. When the stop block 404 is fully open, the spring falls and covers the limiting post 601. The actuating rod 602 disengages, the stop block 404 resets and blocks the next spring, and the turntable 6 continues to rotate, sending the limiting post 601 with the spring to the material picking station. After picking up the material, the limiting post 601 is emptied and then re-oiled by the oil felt 502. The cycle continues.

[0035] This invention provides a spring feeding device for the production of automotive solenoid valves, which can realize automatic spring arrangement, one-by-one blocking and precise loading; through the timing coordination of the toggle rod and the limit post, the spring is prevented from falling and getting stuck; automatic lubrication and uniform oiling by the rotation of the limit post reduce friction and wear and improve assembly smoothness; the multi-station design of the turntable realizes continuous and rapid feeding, improving production efficiency.

[0036] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0037] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A spring feeding device for automobile solenoid valve production, comprising a feeding disc (1), wherein a vibration motor (101) is provided at the bottom of the feeding disc (1), a guide rail (102) is fixedly installed on the inner wall, and a discharge rail (2) is fixedly installed at one end of the guide rail (102); a bracket (3) is provided on one side of the feeding disc (1), a guide pipe (4) and a lubrication assembly (5) are fixedly installed on the bracket (3), a turntable (6) is provided below the guide pipe (4), and a drive motor (7) is connected to the bottom of the turntable (6); characterized in that, The guide tube (4) includes a shrink cylinder (401) and a dwell cylinder (402). The feed end of the shrink cylinder (401) is connected to the discharge rail (2). The bottom of the shrink cylinder (401) is connected to the top of the dwell cylinder (402). The inner diameter of the bottom end of the shrink cylinder (401) is equal to the inner diameter of the dwell cylinder (402) and is greater than the outer diameter of the spring. A flow groove (403) is provided at the bottom of the dwell cylinder (402). An installation groove (406) is provided on the inner side wall of the dwell cylinder (402). A stop block (404) is rotatably installed in the installation groove (406). A torsion spring (405) is sleeved on the rotating shaft of the stop block (404). The torsion spring (405) keeps one end of the stop block (404) inserted into the dwell cylinder (402). The lubrication assembly (5) includes an oil box (501) fixed on the bracket (3), an oil felt (502) placed in the oil box (501), and a micro pump (503) fixed on the oil box (501). The micro pump (503) is used to spray the lubricating oil in the oil box (501) onto the oil felt (502). A limit post (601) is rotatably installed on the top surface of the turntable (6), and a toggle rod (602) is fixedly installed thereon. The limit post (601) and the toggle rod (602) rotate synchronously with the turntable (6). The oil felt (502) is located on the rotation path of the limit post (601), so that the limit post (601) contacts the oil felt (502) and applies lubricating oil before rotating into the flow channel (403).

2. The spring feeding device for automotive solenoid valve production according to claim 1, characterized in that, The flow channel (403) is a notch opened upward at the bottom edge of the retention cylinder (402), and the width of the notch is greater than the outer diameter of the limiting post (601).

3. The spring feeding device for automotive solenoid valve production according to claim 1, characterized in that, The stop block (404) is rotatably installed in the mounting groove (406) via a rotating shaft. The torsion spring (405) is sleeved on the rotating shaft, with one end abutting against the stop block (404) and the other end abutting against the inner wall of the mounting groove (406).

4. The spring feeding device for automotive solenoid valve production according to claim 1, characterized in that, The limiting post (601) and the actuating rod (602) are arranged at intervals in the circumferential direction of the turntable (6), such that in the rotation direction of the turntable (6), the actuating rod (602) approaches the stop cylinder (402) before the limiting post (601), and when the limiting post (601) is fully rotated into the flow channel (403), the actuating rod (602) pushes the stop block (404) completely into the mounting groove (406).

5. A spring feeding device for automotive solenoid valve production according to claim 1, characterized in that, The limiting post (601) is rotatably mounted on the turntable (6) via a bearing, so that the limiting post (601) rotates relative to the turntable (6) after contacting the roof felt (502).

6. A spring feeding device for automotive solenoid valve production according to claim 4, characterized in that, The outer diameter of the limiting post (601) is smaller than the inner diameter of the spring to be fed, so that the spring fits onto the limiting post (601) with a clearance fit.

7. A spring feeding device for automotive solenoid valve production according to claim 5, characterized in that, The oil box (501) has an opening on the side near the center of the turntable (6), and a portion of the oil felt (502) extends out of the opening to contact the limiting post (601).

8. A spring feeding device for automotive solenoid valve production according to claim 4, characterized in that, The turntable (6) has multiple limit posts (601) evenly distributed along its circumference and a lever (602) corresponding to each limit post (601).

9. A spring feeding device for automotive solenoid valve production according to claim 1, characterized in that, The inlet of the micro pump (503) is connected to the inside of the oil box (501), and the outlet faces the oil felt (502) to spray lubricating oil onto the oil felt (502).

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