Automatic testing light machine

Abstract

The present invention relates to automation technology in the field of light bulb production, and discloses an automatic testing light-unloading machine, including a frame, on which a robotic arm assembly and a testing tool are installed. The robotic arm assembly includes a robotic arm base, a first rotating arm, a second rotating arm and a workpiece transfer device. The first rotating arm is connected to the robotic arm base and the second rotating arm, and the second rotating arm is connected to the workpiece transfer device through a screw. The workpiece transfer device transports the light bulb to the detection tooling for lighting. The test circuit in the second rotating arm determines whether the power value of the lit light bulb is within the set range of qualified product power value, and transmits the determined electrical signal to the workpiece transfer device. The workpiece transfer device transfers light bulbs with qualified power values to the production line, and transfers light bulbs with unqualified power values to the defective product area. The light machine has a high degree of automation, small detection error, low labor cost, and high production efficiency.

Description

Technical Field

[0001] The present invention relates to automation technology in the field of light bulb production, and in particular to an automatic light bulb testing machine. Background Art

[0002] Pre-shipment testing of light bulbs is a crucial process in production, crucial for product quality. However, existing production methods typically rely on collaborative manual labor. For example, some workers manually unload components from automated laser printing equipment, place them on a testing table, and then, after lighting them, other workers manually determine whether the power levels are within the design range before sorting them. However, this judgment is based solely on the bulb's brightness, with dim or unlit bulbs generally considered defective. This production method has several drawbacks: Firstly, the subjective nature of these criteria leads to significant errors. For example, some bulbs may appear slightly dimmer than the brightest, yet still pass muster, a fact indistinguishable to the naked eye. Secondly, the level of automation is low, and labor costs are high.

[0003] There is an urgent need for an automatic loading, automatic testing, and automatic unloading equipment to make up for the shortcomings of existing technologies and improve productivity. Summary of the Invention

[0004] The purpose of the present invention is to solve the technical difficulties of automatic detection and automatic sorting of light bulbs in light bulb manufacturers. The technical solution adopted is:

[0005] An automatic lamp test and unloading machine includes a frame, on which is mounted a robotic arm assembly and a testing fixture. The robotic arm assembly includes a robotic arm base, a first rotating arm, a second rotating arm, and a workpiece transfer device. The first rotating arm connects the robotic arm base and the second rotating arm, and the second rotating arm is connected to the workpiece transfer device via a screw. The workpiece transfer device transports a light bulb to the testing and unloading fixture for lighting. A test circuit within the second rotating arm determines whether the power value of the lit bulb is within a set range of qualified product power values and transmits the determined electrical signal to the workpiece transfer device. The workpiece transfer device transfers bulbs with qualified power values to the production line and bulbs with unqualified power values to the defective product area. The workpiece transfer device includes a cylinder base, on which is mounted a clamping jaw. The clamping jaw includes a cylinder swing arm and two clamping arms connected to the cylinder swing arm. The testing fixture includes a test lamp holder and an electrode head. The electrode head, driven by the cylinder, extends into the test lamp holder to light the bulb. This achieves automated transportation of light bulb products and automated testing of bulb quality.

[0006] Furthermore, it also includes a PLC controller for controlling each controlled component.

[0007] Furthermore, it also includes a laser printing device, which includes a base and a laser instrument and a laser turntable tool installed on the base, and the laser turntable tool is evenly distributed with a circle of bulb mounting seats.

[0008] Furthermore, the laser turntable tooling rotates intermittently. Since the workpiece transfer device sets a specific movement route, the intermittent rotation is used to move the light bulb to the movement route of the workpiece transfer device, thereby improving the transfer efficiency.

[0009] Furthermore, four clamping claws are installed on the cylinder base, and four test lamp holders are installed on the test fixture.

[0010] Furthermore, the four clamping jaws are divided into a front group of clamping jaws and a rear group of clamping jaws, and the four test lamp holders are divided into an outer group of test lamp holders and an inner group of test lamp holders.

[0011] The rationale behind designing a two-gripper group is that there are four possible combinations of good and bad bulbs, simplifying both the programming and the gripper's movements. For example, if one bulb is good and the other is bad, the gripper can sort the bulbs by releasing one to the production line and the other to the bad area, making the process relatively simple. However, with three grippers in a group, there are eight possible combinations of good and bad bulbs, making the process much more complex and inevitably reducing efficiency.

[0012] Furthermore, the cylinder base can rotate 180 degrees to achieve the position interchangeability of the front group of clamping jaws and the rear group of clamping jaws.

[0013] The specific transfer process is further described. The front group of grippers grips two bulbs on the laser turntable tooling and moves them to the outer group of test lamp holders, then grips two bulbs and moves them to the inner group of test lamp holders. At the same time, the rear group of grippers sorts the two bulbs on the outer group of test lamp holders.

[0014] Furthermore, the clamping jaws further include a pre-compression suction cup mounted on the cylinder base via a guide column, which holds the lampshade to prevent the lamp from falling during transportation by the clamping jaws.

[0015] Furthermore, the two clamping arms of the clamping jaws are two round rods parallel to each other, and rubber pads are provided on the inner sides of the round rods; the test tooling includes four sets of clamping and power-on devices, and the clamping and power-on devices include a test lamp holder and an electrode assembly; the test lamp holder is a cylindrical structure with an inner cavity matching the lamp holder, and two upwardly protruding bosses are provided at the upper end of the side wall of the cylinder, the two bosses are symmetrical to each other, and the length of the clamping arm is greater than the distance between the two bosses, and a first elastic sheet and a second elastic sheet are respectively installed on the inner sides of the two bosses, and a through hole is provided on the side wall of the cylinder corresponding to the first elastic sheet; the electrode assembly is arranged on the side of the test lamp holder, and the electrode assembly includes a power-on drive cylinder and an electrode head insulated and connected to the front end of the piston rod of the power-on drive cylinder, the electrode head is facing the through hole, and under the drive of the power-on drive cylinder, the front end of the electrode head extends into the through hole and contacts the first elastic sheet, and the electrode head serves as the first electrode for the external electrical connection of the clamping and power-on device; a third elastic sheet is provided at the bottom of the cylinder, and the third elastic sheet serves as the second electrode for the external electrical connection of the clamping and power-on device.

[0016] The inner side of the boss is an arc surface with an arc. The clamp is used to clamp the base of the bulb and directly place the bulb on the test lamp holder. During the placement process, the base of the lamp holder is first located above the cylinder of the test lamp holder, and the two bosses will be pressed at the same time. The clamp arm of the clamp is located between the gap formed by the two bosses. Then the clamp arm of the clamp is relaxed, and a part of the base of the bulb holder enters the cylinder of the test lamp holder, and the other part is pressed against by the two bosses to ensure that the bulb is not easy to fall. Furthermore, the first elastic gasket is connected to the electrical connection point of the bulb base, and the third elastic gasket is connected to the solder connection point at the end of the bulb holder. At the same time, the electrode head and the third elastic gasket are connected to the test circuit. Under the action of the cylinder, the electrode head passes through the through hole into the test lamp holder and contacts the first elastic gasket, closing the circuit to light the bulb. On the other hand, the bulb transferred by the clamp can be placed stably on the test lamp holder.

[0017] Compared with the existing technology, the present invention has the following beneficial effects: original process flow: original process flow: manual loading on laser printing equipment - automatic laser printing - manual unloading - turnover - manual testing - manual screening of defective products - manual unloading to the production line; current process flow: manual loading on laser printing equipment - automatic laser printing - automatic unloading - automatic testing - automatic screening of defective products - automatic unloading to the production line. The original process flow is improved to the current process flow, and the integration of laser printing equipment and testing equipment is realized by using a robotic arm assembly; the robotic arm assembly automatically realizes the unloading work of the laser printing equipment and directly turns over to the test tooling; the testing equipment realizes automatic judgment of good and defective products, and the robotic arm assembly transports good products to the production line and transports defective products to the defective product area. The degree of automation is high, the detection error is small, the labor cost is low, and the production efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention.

[0019] Figure 2 yes Figure 1 Enlarged view of point A in the middle.

[0020] Figure 3 It is a schematic diagram of the present invention combined with a production line.

[0021] In the figure: frame 1, base 2, laser turntable tooling 3, bulb mounting base 30, robotic arm assembly 4, test tooling 5, robotic arm base 6, first rotating arm 7, second rotating arm 8, workpiece transfer device 9, screw 10, cylinder base 11, clamping jaws 12, cylinder swing arm 13, clamping arm 14, pre-loaded suction cup 15, test lamp holder 16, boss 160, notch 161, electrode head 17, cylinder 18, waiting area B, front group of clamping jaws 19, rear group of clamping jaws 20, outer group of test lamp holder 21, inner group of test lamp holder 22. DETAILED DESCRIPTION

[0022] The following further illustrates the embodiments of the present invention in conjunction with the accompanying drawings and implementation methods. The positional relationship described herein is consistent with the positional relationship direction of the accompanying drawings and is only for the convenience of description and does not limit the structure of the present invention.

[0023] In this embodiment, Figures 1 to 3The machine comprises a frame 1 and a base 2. A laser turntable fixture 3 and a laser instrument are mounted on the frame. A robotic arm assembly 4 and a test fixture 5 are mounted on the base. The robotic arm assembly comprises a robotic arm base 6, a first rotating arm 7, a second rotating arm 8, and a workpiece transfer device 9. One end of the first rotating arm is movably connected to the robotic arm base 6, and the other end is rotatably connected to one end of the second rotating arm. A screw 10 is connected to the other end of the second rotating arm. A cylinder base 11 is provided below the screw. The screw can enable the cylinder base to move up and down. The cylinder base 11 is fixedly connected to a motor, and the output shaft of the motor is vertically connected to the lower end of the screw. The rotation of the output shaft drives the motor to rotate, and the rotation of the motor drives the rotation of the cylinder base. Four clamps 12 are mounted on the cylinder base. Each clamp comprises a cylinder swing arm 13 and two clamp arms 14 connected to the cylinder swing arm. The two clamp arms clamp the two sides of the lamp holder base of the light bulb. The clamp arm is a cylindrical rod with a rubber pad on the inside. The inside of the clamp arm has a contact portion that is recessed inward. The clamp jaw also includes a preload suction cup 15 mounted on the cylinder base via a guide post. The preload suction cup holds the upper end face of the lamp holder. The test fixture is equipped with four test lamp holders 16. The test lamp holders 16 are cylindrical. The upper end face of the test lamp holder is provided with two opposing bosses 160 that extend outward from the upper end face. The inner side of the bosses is a curved surface. The length of the round rod clamp arm is greater than the width of the gap 161 formed between the two bosses. The clamp grips the base of the bulb and places it directly on the test lamp holder. During placement, the base of the lamp holder is first positioned above the cylindrical body of the test lamp holder, with the two bosses simultaneously abutting against each other. The clamp arm then relaxes, allowing a portion of the base of the lamp holder to enter the cylindrical body of the test lamp holder, while the other portion is abutted against the two bosses, ensuring that the bulb does not easily fall and maintaining stability. A first elastic sheet and a second elastic sheet are mounted on the inner side of the two bosses, respectively, and a third elastic gasket is provided on the inner bottom of the test lamp holder. A through-hole is provided on the cylindrical outer wall of the test lamp holder, located at the position of the first elastic gasket. A cylinder device is provided on the right side of the test lamp holder. The piston rod of the cylinder is insulated and connected to an electrode head 17, which faces the through-hole. Under the action of the cylinder, the electrode head 17 enters the through-hole and contacts the first elastic gasket. The first elastic gasket and the third elastic gasket are necessary to achieve electrical connection. The clamp places the bulb in the test lamp holder. The first elastic gasket connects the electrical connection point on the base of the bulb holder, and the second elastic gasket connects the solder contact at the end of the lamp holder. At the same time, the electrode head and the second elastic gasket are connected to the test circuit. When the electrode head 17 passes through the above-mentioned through hole into the test lamp holder and contacts the first elastic gasket, the entire circuit is closed and the bulb is lit.

[0024] This embodiment also includes a PLC controller for controlling each controlled component. The PLC controller is connected to the electric drive cylinder, the motor for controlling the rotation of the cylinder base, the motor for controlling the rotation of the first rotating arm, and necessary driving devices.

[0025] The light bulbs are manually loaded onto the laser turntable tooling, which has a circle of light bulb mounting seats 30 evenly distributed on the laser turntable tooling. Light bulbs are manually installed on the light bulb mounting seats. After the automatic laser printing process is completed, two of the light bulbs distributed on the laser turntable tooling are transported by the workpiece transfer device to two test lamp holders on the test tooling. The light bulbs will be lit on the test lamp holders, and the electrode head will automatically detect whether the power value of the light bulb is within the design range, and transmit the signal to determine whether the light bulb is a good product to the second rotating arm. The second rotating arm controls the clamping claw, and the clamping claw transports the good products to the production line and the defective products to the defective product area, and leave the production line, thereby realizing automatic detection and sorting.

[0026] In order to facilitate the description of the working principle of this embodiment below, the definitions are as follows: the two clamping jaws located in the front of the four clamping jaws are defined as the front group of clamping jaws, and the two clamping grippers located in the back are defined as the rear group of clamping jaws; the two test lamp holders located on the outside of the four test lamp holders are defined as the outer group of test lamp holders, and the two test lamp holders located on the inside of the rack are defined as the inner group of test lamp holders.

[0027] The laser turntable fixture rotates intermittently. Specifically, the laser turntable fixture is set to rotate a certain angle within a certain time interval, specifically meeting the following conditions: two of the light bulbs on the laser turntable fixture (especially the ones closest to the frame) are Figure 3 The dashed box indicates the waiting area B. The front group of grippers 19 will first grip the bulbs and move them to the outer test lamp holder 21 for testing. Next, the rear group of grippers 20 will grip the two bulbs located in the inner test lamp holder 22. Based on the transmitted signal, good bulbs will be moved to the production line for the next step, while defective bulbs will be moved to the defective area, achieving automatic screening of defective bulbs. At this point, the grippers will move to the laser turntable fixture. Simultaneously, the next two bulbs will automatically move to the dashed box as the laser turntable fixture rotates. The front group of grippers grips and rotates 180 degrees to the inner test lamp holder for testing. Then, the rear group of grippers will grip the two bulbs located in the outer test lamp holder. Based on the transmitted signal, good bulbs will be moved to the production line for the next step, while defective bulbs will be moved to the defective area. This cycle repeats, achieving automated screening of defective bulbs. This embodiment integrates laser printing equipment, a robotic arm assembly, and a testing fixture to develop a PLC program to perform the aforementioned actions and judgments.

[0028] The present invention is not limited to the above-mentioned embodiments, and various changes can be made within the scope of knowledge possessed by ordinary technicians in this field without departing from the scope of the present invention.

Claims

1. An automatic testing lamp lowering machine, characterized by: The machine comprises a frame, on which a robotic arm assembly and a test fixture are installed, the robotic arm assembly comprises a robotic arm base, a first rotating arm, a second rotating arm and a workpiece transfer device, the first rotating arm is connected to the robotic arm base and the second rotating arm, the second rotating arm is connected to the workpiece transfer device through a screw, the workpiece transfer device transports the light bulb to the detection blanking fixture for lighting, the test circuit in the second rotating arm determines whether the power value of the lit light bulb is within the set range of the qualified product power value, and transmits the judged electrical signal to the workpiece transfer device, the workpiece transfer device transfers the light bulb with qualified power value to the production line, and transfers the light bulb with unqualified power value to the defective product area; the workpiece transfer device comprises a cylinder base, on which a clamping claw is installed, and the clamping claw comprises a cylinder swing arm and two clamping arms connected to the cylinder swing arm; It also includes a PLC controller for controlling each controlled machine component; Four clamping claws are installed on the cylinder base, and four test lamp holders are installed on the test fixture; The four clamping jaws are divided into a front group of clamping jaws and a rear group of clamping jaws, and the four test lamp holders are divided into an outer group of test lamp holders and an inner group of test lamp holders; The cylinder base is rotatable to achieve the position exchange between the front group of clamping jaws and the rear group of clamping jaws; The front group of grippers grips two bulbs on the laser turntable tooling and moves them to the outer group of test lamp holders, then grips two bulbs and moves them to the inner group of test lamp holders, while the rear group of grippers sorts the two bulbs on the outer group of test lamp holders.

2. The automatic testing device for lighting according to claim 1, characterized in that: The laser printing device comprises a base, a laser instrument and a laser turntable tooling installed on the base, wherein the laser turntable tooling is evenly distributed with a circle of bulb mounting seats.

3. The automatic testing device for lighting according to claim 2, characterized in that: The laser turntable tooling rotates intermittently.

4. The automatic testing device for lighting according to claim 1, characterized in that: The clamping jaw further comprises a pre-compression suction cup mounted on the cylinder base via a guide column.

5. The automatic testing device for lighting according to claim 1, characterized in that: The two clamping arms of the clamping jaw are two parallel round rods, and rubber pads are provided on the inner sides of the round rods; The test fixture includes four sets of clamping and powering devices, and the clamping and powering devices include a test lamp holder and an electrode assembly; The test lamp holder is a cylindrical structure with an inner cavity matching the lamp cap. Two upwardly protruding bosses are provided on the upper end of the cylindrical side wall. The two bosses are symmetrical to each other. The length of the clamping arm is greater than the distance between the two bosses. A first elastic sheet and a second elastic sheet are respectively installed on the inner sides of the two bosses. A through hole is provided on the cylindrical side wall corresponding to the first elastic sheet. The electrode assembly is arranged on the side of the test lamp holder, and the electrode assembly includes a power-on drive cylinder and an electrode head insulated and connected to the front end of the piston rod of the power-on drive cylinder. The electrode head faces the through hole. Under the drive of the power-on drive cylinder, the front end of the electrode head extends into the through hole and contacts the first elastic sheet. The electrode head serves as a first electrode for external electrical connection of the clamping power-on device; A third elastic sheet is provided at the bottom of the cylinder, and the third elastic sheet serves as a second electrode for clamping the power-on device for external electrical connection.

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