A screw receiving platform with a straightening function

Abstract

This utility model discloses a screw receiving platform with a straightening function, including a receiving platform and a straightening mechanism. The receiving platform includes a rectangular cavity, inside which a screw receiving table is slidably installed. The screw receiving table contains a screw receiving hopper. A sliding cylinder is installed on the front side of the rectangular cavity. The sliding cylinder drives the screw receiving table to move linearly back and forth inside the rectangular cavity. The screw receiving table moves to its limit position near the cylinder, which is the screw receiving position; it moves to its limit position away from the cylinder, which is the screw removal position. The upper end of the rectangular cavity is closed by a top cover plate, on which a blow-nail tube fixing seat is installed. The blow-nail tube fixing seat is used to connect a screw feeder to supply screws to the receiving platform. This utility model can control the specifications, models, and quantities of screws, avoiding overloading, omissions, incorrect loading, or mixing of screws; and the straightening mechanism can straighten screws with skewed heads.

Description

Technical Field

[0001] This utility model relates to the field of automated assembly technology, specifically to a screw receiving table with a straightening function. Background Technology

[0002] Standard screws are among the most common and basic fasteners in automated assembly. Currently, to avoid screw installation errors caused by mixed screws, automated systems are typically used for continuous screw feeding and installation. These systems include a screw feeder, a receiving table, and a screw-collecting module with a negative pressure suction device. Screws are fed onto the receiving table by the screw feeder, and the suction module, with its negative pressure suction device, picks up the screws from the receiving table and installs them onto the product. However, the current common "continuous screw feeding" method has the following problems: 1. It cannot ensure that only one screw is fed at a time, leading to overloading or omissions; 2. It cannot confirm whether the screw specifications are correct, leading to incorrect or mixed installations; 3. When a screw with a flat spring washer falls onto the receiving table, the characteristics of the spring washer itself, such as elasticity and unevenness, can cause the screw head to tilt, thus affecting the accurate positioning and pickup of the screw by the suction device. Utility Model Content

[0003] To solve the above problems, this utility model provides a screw receiving platform with a straightening function.

[0004] The technical solution adopted in this utility model is:

[0005] A screw receiving platform with a straightening function includes a receiving platform and a straightening mechanism. The receiving platform includes a rectangular cavity, inside which a screw receiving table is slidably installed. The screw receiving table has a screw receiving hopper whose inner cavity shape is adapted to the continuously fed screws. A sliding cylinder is installed on the front side of the rectangular cavity. The piston rod of the sliding cylinder extends into the rectangular cavity and connects to the screw receiving table. The sliding cylinder drives the screw receiving table to move back and forth linearly inside the rectangular cavity. The screw receiving table moves to the limit position close to the cylinder, which is the screw receiving position, and moves to the limit position far away from the cylinder, which is the screw picking position. The upper end of the rectangular cavity at the screw receiving position is closed by a top cover plate. A blow-nail tube fixing seat is installed on the top cover plate. The blow-nail tube fixing seat is used to connect a screw feeder to supply screws to the screw receiving table. The straightening mechanism is located on the rear side of the rectangular cavity and is used to straighten the screws that are tilted in the screw receiving hopper.

[0006] Because the inner shape of the screw receiving hopper is adapted to the continuously supplied screws, it can only accept one screw with the same shape, thus avoiding mis-installation, mixing, over-installation, or omission of screws. When screws with flat spring washers fall into the screw receiving hopper, the characteristics of the washers cause the screw heads to tilt. A straightening mechanism straightens the screws, ensuring their heads are in a vertical position. This guarantees that the screw picker can more accurately position and pick up the screws, ensuring the accuracy and reliability of the picking process, and thus ensuring the smooth operation of the entire screw supply and assembly process.

[0007] Furthermore, the straightening mechanism includes a limiting block and a straightening cylinder; the straightening cylinder is installed on the rear end sealing plate of the rectangular cavity, the cylinder piston rod extends horizontally forward to connect with the limiting block, and the other end of the limiting block can slide through the rear end sealing plate to contact and connect with the screw rod part of the screw that falls into the screw receiving hopper.

[0008] When the piston rod of the straightening cylinder extends, it drives the limiting block forward, bringing the screw shank into contact with the inner cavity of the screw receiving hopper. Because the inner cavity wall in contact with the screw shank is a vertical wall, the screw can only adjust its position vertically due to the constraint of the vertical wall. Under the thrust of the limiting block and the constraint of the vertical wall, the screw gradually adjusts to a state parallel to the vertical wall, i.e., in a vertical position, thus achieving the purpose of straightening the originally tilted head. This straightening mechanism has a simple structure and high reliability.

[0009] Furthermore, a spacer is installed inside the rear end plate, through which the limiting block passes and connects to the screw. The spacer provides a precise guide channel for the limiting block, ensuring that the limiting block can move accurately along a straight line towards the screw's threaded portion under the push of the piston rod of the straightening cylinder.

[0010] Furthermore, a first sensor is installed at the nail receiving position. The first sensor is used to detect whether the screw model and specification that falls into the nail receiving table are correct. If they are correct, it triggers the piston rod of the sliding cylinder to extend. A second sensor is installed at the nail removal position. The second sensor is used to detect whether there are screws in the nail receiving table. If there are screws, it sends a signal to the nail suction module that the nail can be removed.

[0011] The sensor setup can automate the nail feeding and nailing processes, improving work efficiency.

[0012] Furthermore, both the first and second sensors are through-beam photoelectric sensors. They offer high detection accuracy, fast response speed, and strong anti-interference capability.

[0013] Furthermore, the staple attaching platform is slidably mounted within the rectangular cavity via a slide rail extending along the direction of extension and retraction of the cylinder piston rod. A slider on the slide rail is fixedly connected to the staple attaching platform, ensuring that the staple attaching platform can move smoothly along a specific direction.

[0014] Furthermore, the piston rod of the sliding cylinder is connected to the nail receiving platform via a floating joint, which is fixed to the front side of the nail receiving platform. This improves movement flexibility and reduces the risk of equipment failure.

[0015] Furthermore, the front end of the rectangular cavity is closed by a cylinder mounting plate, which is used to install a sliding cylinder; the rear end of the rectangular cavity is closed by a rear end sealing plate, the left and right sides are closed by side plates, and the bottom is closed by a bottom plate.

[0016] The enclosed rectangular cavity provides a space for the installation and operation of the stapler station, serving to protect and house the stapler station.

[0017] The beneficial effects of this utility model are:

[0018] 1. It can control the specifications and quantity of screws, ensuring that the screw-picking module picks up only one screw that meets the specifications at a time, avoiding the overloading, omission, incorrect loading or mixing of screws, thus ensuring the product's yield rate and the stability of its performance, and improving product efficiency.

[0019] 2. The straightening mechanism can straighten the screw head with flat spring washer that has fallen into the screw receiving hopper, thereby ensuring that the screw suction device can more accurately position and pick up the screw, ensuring the accuracy and reliability of the suction process, and thus ensuring the smooth progress of the entire screw supply and assembly process. Attached Figure Description

[0020] Figure 1 This is a cross-sectional view of a screw receiving platform with a straightening function according to this application.

[0021] Figure 2 for Figure 1 Top view. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below in conjunction with the accompanying drawings and preferred embodiments.

[0023] See Figure 1 and Figure 2 A screw receiving platform with a straightening function includes a receiving platform body, a first sensor 4, a second sensor 5, a floating joint 7, a screw receiving platform 9, a screw receiving hopper 10, a blown nail tube fixing seat 11, a slide rail 16, a sliding cylinder 17, and a straightening mechanism.

[0024] The receiving platform body is a semi-enclosed rectangular cavity composed of a base plate 1, two side plates 2, a top cover plate 6, a cylinder mounting plate 3, and a rear end sealing plate 8. The base plate 1 is located at the bottom of the cavity, the two side plates 2 are located on the left and right sides of the cavity respectively, the cylinder mounting plate 3 is located on the front side of the cavity, used to seal the front end of the cavity and install the sliding cylinder, and the rear end sealing plate 8 is located on the rear side of the cavity, used to seal the rear end of the cavity and install the straightening mechanism. The top cover plate 6 is located on the upper side of the cavity, used to partially seal the upper end of the cavity and install the blown nail tube fixing seat 11.

[0025] The nail-attaching platform 9 is slidably disposed inside the rectangular cavity via a slide rail 16. The slide rail 16 is fixed to the base plate 1 along the length of the cavity by screws. A slider is slidably connected to the slide rail, and the nail-attaching platform is fixed to the slider by screws.

[0026] The nail receiving table 9 is existing equipment, and its interior is equipped with a screw receiving hopper 10. The inner shape of the screw receiving hopper 10 is adapted to the shape of the continuously supplied screws, such as... Figure 1 As shown, the inner cavity of the hopper forms a stepped through-hole that is larger at the top and smaller at the bottom. The diameter of the smaller through-hole is slightly larger than the diameter of the screw shank, while the diameter of the larger through-hole matches the size of the screw head and is compatible with screws equipped with flat spring washers. The screw receiving hopper 10 and the screw receiving platform 9 are connected by a threaded detachable connection, facilitating the replacement of a compatible screw receiving hopper when supplying other types of screws.

[0027] The nail receiving platform 9 is vertically installed in the rectangular cavity, and a floating connector 7 is connected to its front end. The sliding cylinder 17 is horizontally installed on the front side of the cylinder mounting plate 3 by screws in a direction parallel to the slide rail. The cylinder piston rod 171 passes through the through hole opened on the cylinder mounting plate 3 and is connected to the floating connector 8. The cylinder piston rod 171 moves back and forth, causing the nail receiving platform 9 to slide linearly back and forth along the slide rail. The nail receiving platform 9 slides to the limit position close to the cylinder, which is set as the nail receiving position. The nail receiving platform 9 slides to the limit position far away from the cylinder, which is set as the nail removal position.

[0028] The blow-nail tube holder 11 is an existing device, which is fixedly mounted on the upper cover plate 7 with screws and is used to connect the nail feeder. The blow-nail tube holder 11 is located directly above the nail receiving position. When the nail receiving table 9 slides to the nail receiving position, the nail feeder supplies screws to the nail receiving table 9 through the blow-nail tube holder 11.

[0029] The first sensor 4 is installed at the nail receiving position via a sensor bracket to detect whether the screw that has fallen into the nail receiving table 9 is in place. If the screw is in place, it means that the screw specification and size are correct. At this time, the sliding cylinder 17 is triggered to move the nail receiving table from the nail receiving position to the nail removal position. If the screw is not in place, it means that the screw specification and size that has fallen into the nail receiving table 9 is incorrect. At this time, the sensor will not be able to detect the screw, triggering the automation system to issue an alarm.

[0030] The second sensor 5 is installed at the nail-removing position via a sensor bracket. It is used to detect whether there is a screw in the nail-receiving table 9. If there is a screw, it sends a signal to the nail-removing module that the nail can be removed. If there is no screw, it triggers the automation system to issue an alarm.

[0031] Both the first sensor 4 and the second sensor 5 are existing technologies. For example, in this embodiment, both the first sensor and the second sensor are German SICK GSE2S-F1311 through-beam photoelectric sensors.

[0032] The straightening mechanism includes a spacer 12, a limiting block 13, and a straightening cylinder 15. The rear end plate 4 has a through hole communicating with the rectangular cavity, and the center line of the through hole radially passes through the smaller through hole of the stepped through hole of the screw receiving hopper 10. The spacer 12 is fixedly installed in the through hole of the rear end plate. The straightening cylinder 15 is installed on the rear side of the rear end plate 8 through the cylinder mounting seat 14 in a direction parallel to the axis of the sliding cylinder. The cylinder piston rod extends horizontally forward and connects to the limiting block 13. The other end of the limiting block can slide through the spacer 12 and contact the screw rod part of the screw that falls into the screw receiving hopper 10.

[0033] The working principle of this utility model is as follows:

[0034] In the initial state, the cylinder piston rod 171 retracts, and the nail receiving platform 9 is in the nail receiving position;

[0035] The nail feeder blows the screw to the receiving position, and the screw falls into the screw receiving hopper 10. The first sensor 4 senses that the screw is in place and sends a signal to trigger the sliding cylinder 17 to start. The cylinder piston rod extends and drives the receiving table 9 to slide to the nail picking position. The second sensor 5 senses that the screw is in place and sends a signal to the nail suction module that the nail can be picked up.

[0036] When the screw has a flat spring washer, the second sensor 5 senses that the screw is in place and triggers the start of the straightening cylinder 15. The cylinder piston rod extends forward and pushes the limit block 13 into the screw receiving hopper 10 to straighten the screw with the head tilted. When the extension rod of the straightening cylinder 15 extends and retracts to the end, it sends a signal to the nail suction module that the nail can be picked up.

[0037] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications are also within the protection scope of the present utility model.

Claims

1. A screw receiving table with a centering function, characterized in that, The device includes a receiving platform and a straightening mechanism. The receiving platform includes a rectangular cavity. A nail receiving platform (9) is slidably installed inside the rectangular cavity. The nail receiving platform (9) has a screw receiving hopper (10) whose inner cavity shape is adapted to the continuously supplied screws. A sliding cylinder (17) is installed on the front side of the rectangular cavity. The piston rod of the sliding cylinder (17) slides into the rectangular cavity and extends to connect with the nail receiving platform (9). The sliding cylinder drives the nail receiving platform to move back and forth linearly in the rectangular cavity. When the nail receiving platform moves to the limit position close to the cylinder, it is the nail receiving position. When it moves to the limit position far away from the cylinder, it is the nail taking position. The upper end of the rectangular cavity at the nail receiving position is closed by an upper cover plate (6). A blow-nail tube fixing seat (11) is installed on the upper cover plate (6). The blow-nail tube fixing seat (11) is used to connect to the nail feeder and supply screws to the nail receiving platform (9). The straightening mechanism is located on the rear side of the rectangular cavity and is used to straighten the skewed screws in the screw receiving hopper (10).

2. The screw receiving table with a centering function according to claim 1, characterized in that, The straightening mechanism includes a limiting block (13) and a straightening cylinder (15); the straightening cylinder (15) is installed on the rear end sealing plate (8) of the rectangular cavity, and the cylinder piston rod extends horizontally forward to connect with the limiting block (13). The other end of the limiting block (13) can slide through the rear end sealing plate (8) and contact the screw part of the screw that falls into the screw receiving hopper (10).

3. The screw receiving table with a centering function according to claim 2, characterized in that, A spacer (12) is installed inside the rear end plate (8), and a limiting block (13) passes through the spacer (12) and is connected to a screw.

4. The screw receiving table with a centering function according to claim 1, characterized in that, A first sensor (4) is installed at the nail receiving position. The first sensor is used to detect whether the screw model and specification that falls into the nail receiving table (9) are correct. If they are correct, the piston rod of the sliding cylinder (17) is triggered to extend. A second sensor (5) is installed at the nail removal position. The second sensor is used to detect whether there are screws in the nail receiving table (9). If there are screws, a signal to remove the nail is sent to the nail suction module.

5. The screw receiving table with a centering function according to claim 4, characterized in that, Both the first sensor (4) and the second sensor (5) are through-beam photoelectric sensors.

6. The screw receiving table with a centering function according to claim 1, characterized in that, The nail-attaching platform (9) is slidably installed in the rectangular cavity via a slide rail (16), and the slider on the slide rail (16) is fixedly connected to the nail-attaching platform (9).

7. The screw receiving table with a centering function according to claim 1, characterized in that, The piston rod of the sliding cylinder (17) is connected to the nail receiving platform (9) through a floating joint (7), and the floating joint (7) is fixed on the front side of the nail receiving platform (9).

8. The screw receiving table with a centering function according to claim 1, characterized in that, The front end of the rectangular cavity is closed by a cylinder mounting plate (3), which is used to install a sliding cylinder (17); the rear end of the rectangular cavity is closed by a rear end sealing plate (8), the left and right sides are closed by side plates (2), and the bottom is closed by a bottom plate (1).

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