An automatic pin inserting machine

Abstract

This invention relates to an automatic pin insertion machine, belonging to the technical field of pin insertion machines. The automatic pin insertion machine is characterized by comprising: a workpiece feeding and arranging unit for feeding and arranging workpieces and conveying them to a feeding unit; a first pin feeding and arranging unit for feeding and arranging pins, which are then inserted into a first position on the workpiece after being picked up by the first pin insertion unit; a first clamping unit for clamping and fixing the pins at the first position on the workpiece; a second pin feeding and arranging unit for feeding and arranging pins, which are then inserted into a second position on the workpiece after being picked up by the second pin insertion unit; a second clamping unit for clamping and fixing the pins at the second position on the workpiece; and a feeding unit for transferring and conveying workpieces between different workstations. The pin insertion machine of this invention can automatically operate multiple models of double-row pins for electronic components, reducing equipment space requirements, decreasing changeover time, and maximizing cost savings.

Description

Technical Field

[0001] This invention relates to an automatic pin insertion machine, and more particularly to a pin insertion machine that can be used for multiple product models, belonging to the field of pin insertion machine technology. Background Technology

[0002] Pin insertion machines, also known as pin insertion machines, are used for inserting pins into various coil frames, connectors, and other plastic parts that require pins. They are simple to operate and highly efficient, making them very practical mechanical production equipment for the electronics industry.

[0003] With the increasing diversification of electronic components, the structural limitations of traditional pin insertion machines have become apparent, failing to meet the market's diverse demands for automation, processing precision, and production efficiency. Current technology often presents situations where a single electronic component has multiple different models. For example, a workpiece with double rows of pins may differ in model only in the pin positions. Because existing pin insertion equipment can only process one model with fixed pin positions, it is unsuitable for workpieces requiring such pin configurations. The current approach is to customize a new set of equipment, significantly increasing equipment costs and floor space requirements for manufacturers. Summary of the Invention

[0004] The present invention aims to solve the various problems mentioned above, and thus provides an automatic pin insertion machine that can ensure the quality of processed products and the pin insertion process, while taking into account product quality and achieving compatibility with different models of the same product type.

[0005] To solve the above problems, the technical solution adopted by the present invention is as follows:

[0006] An automatic pin insertion machine, characterized by including:

[0007] The workpiece feeding and arranging unit feeds and arranges the workpieces and then transports them to the feeding unit.

[0008] The first pin feeding and arranging unit feeds and arranges the first pin, and inserts the pin into the first position of the workpiece after the first pin is picked up by the first pin feeding unit.

[0009] Clamping unit one clamps and fixes the pin one at the first position of the workpiece;

[0010] The second pin feeding and arranging unit feeds and arranges the pins, and inserts the pins into the second position of the workpiece after the pins are picked up by the second pin feeding unit.

[0011] Clamping unit two clamps and fixes the second pin on the second position of the workpiece;

[0012] The feeding unit is used to transfer and transport workpieces between different workstations.

[0013] The workpiece feeding and aligning unit consists of a workpiece storage box, a workpiece circular vibrating plate, and a workpiece linear vibrating track, with the workpiece linear vibrating feeding track being connected to the feeding unit.

[0014] The feeding unit includes a feeding track, a feeding component disposed on one side of the feeding track for feeding the workpiece on the track, and a positioning component disposed on the other side of the feeding track for limiting and fixing the workpiece on the track; a connecting track is disposed at the front end of the feeding track, and the connecting track is used to connect the direct vibration feeding track of the workpiece feeding and aligning unit and the connecting track of the feeding unit.

[0015] The feeding assembly includes a servo motor module that travels along the feeding direction and a push rod cylinder mounted on top of the servo motor module and driven and controlled by it. The push rod cylinder has a push rod connected to its output, and several push plates are distributed on the push rod. When the push rod cylinder pushes the push rod, the push plates on the push rod can laterally cut into a predetermined position on the feeding track. Under the drive of the servo motor module, the workpiece on the feeding track can be pushed forward to feed.

[0016] The number and position of the positioning components correspond to the pin insertion station one, clamping station one, pin insertion station two, and clamping station two of the feeding track; its structure includes a positioning cylinder and a limiting gripper connected by the output of the positioning cylinder. The shape of the limiting gripper is adapted to the workpiece, and it can limit and fix the workpiece on the feeding track under the drive of the positioning cylinder.

[0017] The feeding track has two pin insertion stations, one and two, each equipped with a pin insertion guide block. The pin insertion guide block includes a movable block fixed above the limiting gripper and a fixed block located at a predetermined position above the station. When the positioning cylinder drives the limiting gripper to insert and limit the workpiece, the movable block moves to align with the fixed block, and a pin insertion channel is formed between the two to guide and limit the pin.

[0018] The structure of the first and second pin feeding and aligning units is the same, both including a pin circular vibrating plate, a pin straight vibration track connected by the output of the pin circular vibrating plate, and a waiting mechanism, an ejection mechanism and a rotating material picking mechanism arranged at the end of the pin straight vibration track.

[0019] The waiting mechanism includes a material platform fixed to the end of the pin straight vibration track. A lifting block is movably inserted inside the material platform. The upper end of the lifting block is used to carry the pin and push the pin upward under the drive of the ejection mechanism. The lower end of the lifting block extends downward along the inside of the material platform and serves as the touch part of the ejection mechanism.

[0020] The ejection mechanism is located below the waiting mechanism. It includes an ejection cylinder and an ejection block connected to the output of the ejection cylinder. When the ejection block moves upward, it can abut against the lower end of the lifting block, thereby lifting the lifting block upward along the inside of the material platform and lifting the foot needle upward.

[0021] The rotary material handling mechanism is located on one side of the waiting mechanism and is used to remove the lifted pins. Its structure includes a rotary cylinder and a material handling arm controlled and connected by the rotary cylinder. The end of the material handling arm has a negative pressure suction port connected to a vacuum generator. The material handling arm is driven by the rotary cylinder to swing to the material handling position and picks up the pins on the lifting block through the negative pressure suction port. Then, the rotary cylinder drives it to swing back to the initial position.

[0022] A through-beam sensor is installed at the front end of the linear vibration track of the pin. When there are too many pins on the linear vibration track, the through-beam sensor will send feedback information to the processor, and the processor will control the circular vibration to stop, thereby reducing energy consumption and production costs.

[0023] The first and second pin insertion units have the same structure, including a rotary lifting mechanism, a rotary lifting arm, and a swing gripper; the rotary lifting mechanism is driven and connected to the rotary lifting arm, and the swing gripper is installed at the end of the rotary lifting arm.

[0024] The rotary lifting mechanism includes a lifting servo motor and a cam connected to its output. The cam drives a cam follower plate, and the top of the cam follower plate is connected to a ball spline shaft via a spherical bearing. The end of the ball spline shaft is connected to a rotary lifting arm. When the cam follower plate moves up and down, it can drive the ball spline shaft and the rotary lifting arm to move up and down. The rotary lifting mechanism also includes a rotary servo motor and a synchronous pulley driven and controlled by it. The spline sleeve of the ball spline shaft is fixedly connected to the synchronous pulley via a connecting sleeve.

[0025] The clamping unit one and clamping unit two have the same structure, including a clamping cylinder and a pressure head driven by the clamping cylinder. The pressure head is designed with a symmetrical installation structure. When changing to different product models, the pressure head can be installed in a mirror image.

[0026] The pin insertion machine of this invention has a more optimized and reasonable structure. The connection and cooperation of each functional unit ensures the degree of automation in processing on the one hand, and greatly reduces the space occupation of the equipment on the other hand. At the same time, it can be fully automated to accommodate multiple models of double-row pins of a single electronic component, avoiding the previous situation where a large number of units or even equipment needed to be replaced for different models of electronic components. This reduces the time required for component changeover and saves equipment costs to the greatest extent. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the pin insertion machine;

[0028] Figure 2 This is a schematic diagram of the workpiece feeding and arranging unit structure;

[0029] Figure 3 This is a schematic diagram of the feeding unit structure;

[0030] Figure 4 This is a schematic diagram of the positioning component structure;

[0031] Figure 5 This is a schematic diagram of the pin feeding assembly unit structure;

[0032] Figure 6 This is a schematic diagram of the waiting mechanism, ejection mechanism, and rotary material handling mechanism.

[0033] Figure 7 This is a schematic diagram of the pin unit structure;

[0034] Figure 8 yes Figure 7 A schematic diagram of the rotating lifting mechanism;

[0035] Figure 9 This is a schematic diagram of the clamping unit structure. Detailed Implementation

[0036] The present invention will now be described in detail with reference to the accompanying drawings.

[0037] Example 1

[0038] like Figure 1 As shown, this embodiment relates to a pin insertion machine, which is suitable for double-row pins of different models of the same product. It includes a workpiece feeding and arranging unit 1 placed on an independent frame, and pin feeding and arranging units 1-2, 2-3, 4-4, 5-5, 6-6, 7-7, and 8 placed on the same frame 9. The workpiece feeding and arranging unit 1 is used to feed and arrange the workpieces 9 and then convey them to the feeding unit 8. The pin feeding and arranging units 1-2 and 3-3 are used to feed and arrange the first and second pins and convey them to the corresponding pin feeding units 1-4 and 5-5 for subsequent pin insertion operations. The first pin insertion unit 4, the first clamping unit 6, the second pin insertion unit 5, and the second clamping unit 7 are sequentially arranged on the first pin insertion station, the first clamping station, the second pin insertion station, and the second clamping station of the feeding unit 8. The first pin insertion unit 4 is used to insert the first pin into the first position of the workpiece, the first clamping unit 6 is used to clamp and fix the first pin after insertion, the second pin insertion unit 5 is used to insert the second pin into the second position of the workpiece, and the second clamping unit 7 is used to clamp and fix the second pin after insertion.

[0039] The specific structural composition of each unit is described in detail below:

[0040] like Figure 2 As shown, the workpiece feeding and aligning unit 1 consists of a workpiece storage bin 101, a workpiece circular vibrating disk 102, and a workpiece linear vibrating feeding track 104. A quantity detection sensor 103 is installed on one side of the workpiece circular vibrating disk 102 to detect the number of workpieces. When workpiece 9 is poured into the workpiece storage bin 101, the quantity detection sensor 103 sends a feeding signal. Upon receiving the signal, the workpiece storage bin 101 feeds the workpiece circular vibrating disk 102. After aligning the workpieces, the workpiece circular vibrating disk 102 transports them to the feeding unit 8 via the workpiece linear vibrating feeding track 104.

[0041] like Figure 3 , 4 As shown, the feeding unit 8 adopts a step-feeding method. Its structure includes a feeding track 808, a feeding component disposed on one side of the feeding track for feeding the workpiece on the track, and a positioning component disposed on the other side of the feeding track 808 for limiting and fixing the workpiece on the track. A connecting track 802 is disposed at the front end of the feeding track 808. The connecting track 802 is used to connect the direct vibration feeding track 104 of the workpiece feeding and aligning unit 1 and the connecting track 802 of the feeding unit 8. The connecting track 802 is controlled by a track cylinder 801. By controlling different positions of the connecting track 802 through the track cylinder 801, the connection and interruption of the track can be realized, thereby realizing intermittent feeding of the workpiece. A through-beam sensor 803 is provided on one side of the connecting track 802 to monitor the workpiece's position and control the track cylinder 801 to perform corresponding actions.

[0042] The feeding assembly includes a servo motor module 804 that travels along the feeding direction and a push rod cylinder 805 mounted on and driven by the servo motor module 804. The push rod cylinder 805 is connected to a push rod 806, and a plurality of push plates 807 are distributed on the push rod 806. When the push rod cylinder 805 pushes the push rod 806, the push plates 807 on the push rod 806 can laterally cut into a predetermined position on the feeding track 808. Under the drive of the servo motor module 804, the workpiece on the feeding track 808 can be pushed forward to feed.

[0043] The number and position of the positioning components correspond to the pin insertion station one, clamping station one, pin insertion station two, and clamping station two of the feeding track 808; its structure includes a positioning cylinder 810 and a limiting gripper 811 connected to the output of the positioning cylinder 810. The shape of the limiting gripper 811 is adapted to the workpiece, and it can limit and fix the workpiece on the feeding track 808 under the drive of the positioning cylinder 810.

[0044] The feeding track 808 has two pin insertion stations, one and two, each equipped with a pin insertion guide block. The pin insertion guide block includes a movable block 812a fixedly connected to the upper part of the limiting gripper 811 and a fixed block 812b located at a predetermined position above the station. When the positioning cylinder 810 drives the limiting gripper 811 to insert and limit the workpiece, the movable block moves to align with the fixed block, and a pin insertion channel is formed between the two to guide and limit the pin.

[0045] After the first workpiece is delivered to the connecting track 802, the through-beam sensor 803 sends a positioning signal, the track cylinder 801 extends, and the connecting track 802 aligns with the feeding track 808, allowing the first workpiece to enter the feeding track 808. The push rod cylinder 805 extends, controlling the push plate 807 on the push rod 806 to cut into the feeding track 808. Subsequently, the servo motor module 804 actuates, driving the push plate 807 to push the first workpiece on the feeding track 808 into the pin insertion station 1. Afterward, the push rod cylinder 805 retracts, and the servo motor module 804 drives the entire feeding assembly to return to its original position. This process is repeated to achieve step-by-step feeding of subsequent workpieces. When the feeding assembly returns to its original position, the positioning cylinder 810 on the other side of the feeding track 808 also extends at the same time, driving the limiting gripper 811 to insert the first workpiece, clamping and positioning the first workpiece on the pin insertion station. The movable block in the pin insertion guide block also moves to the side of the fixed block along with the limiting gripper 811. At this time, a downward pin insertion channel is formed between the movable block and the fixed block.

[0046] like Figure 5 , 6 As shown, the pin feeding and aligning unit 1 2 and the pin feeding and aligning unit 2 3 have the same structure, both including a pin circular vibrating plate 201, a pin linear vibrating track 202 connected to the output of the pin circular vibrating plate 201, and a waiting mechanism 208, an ejection mechanism and a rotating material picking mechanism configured at the end of the pin linear vibrating track 202; the front end of the pin linear vibrating track 202 is provided with a through-beam sensor 207. When there are too many pins on the linear vibrating track, the through-beam sensor 207 will send feedback information to the processor, and the processor will control the circular vibrating to pause, reduce energy consumption and reduce production costs.

[0047] The waiting mechanism 208 includes a material platform 208a fixed to the end of the pin straight vibration track 202. A lifting block 208b is movably inserted inside the material platform 208a. The upper end of the lifting block 208b is used to carry the pin and push the pin upward under the drive of the ejection mechanism. The lower end of the lifting block 208b extends downward along the inside of the material platform 208a and serves as the touch part of the ejection mechanism.

[0048] The ejection mechanism is located below the waiting mechanism 208. It includes an ejection cylinder 205 and an ejection block 205a connected to the output of the ejection cylinder 205. When the ejection block 205a moves upward, it can abut against the lower end of the lifting block 208b, thereby lifting the lifting block 208b upward along the inside of the material table 208a and lifting the foot needle upward.

[0049] The rotating material handling mechanism is located on one side of the waiting mechanism and is used to remove the lifted pins. Its structure includes a rotating cylinder 204 and a material handling arm 203 controlled and connected by the rotating cylinder 204. The end of the material handling arm 203 has a negative pressure suction port connected to a vacuum generator. The material handling arm 203 is driven by the rotating cylinder 204 to swing to the material handling position and pick up the pins on the lifting block 208b through the negative pressure suction port. Then, the rotating cylinder 204 drives it to swing back to the initial position.

[0050] During operation, the pins are aligned by the pin insertion circular vibrating plate 201 and then delivered to the lifting block 208b of the material table 208a via the pin insertion linear vibrating track 202. The ejector cylinder 205 drives the ejector block 205a to push the lifting block 208b inside the material table 208a upwards, and the lifting block 208 rises while simultaneously ejecting the pins upwards. Then, the rotary cylinder 204 drives the picking arm 203 to rotate to the picking position. The negative pressure suction port at the end of the picking arm 203 generates negative pressure to pick up the pins. Subsequently, the rotary cylinder 204 drives the picking arm 203 to rotate to the vertical direction, waiting for the corresponding pin insertion unit to clamp the pin.

[0051] like Figure 7 , 8 As shown, the pin insertion unit 4 and pin insertion unit 5 have the same structure. This embodiment takes pin insertion unit 4 as an example and describes its specific structure in detail: Pin insertion unit 4 includes a rotary lifting mechanism 401, a rotary lifting arm 402 and a swing gripper 403; the rotary lifting mechanism 401 drives and connects to the rotary lifting arm 402, and the swing gripper 403 is installed at the end of the rotary lifting arm 402. During the pin insertion process, the swing gripper 403 can adjust the position of the pin by rotating the rotary lifting arm 402, thereby corresponding to different types of workpieces.

[0052] The rotary lifting mechanism 401 includes a lifting servo motor 408 and a cam 406 connected to its output. The cam 406 drives a cam follower plate 409. The top of the cam follower plate 409 is connected to a ball spline shaft 404 via a spherical bearing. The end of the ball spline shaft 404 is connected to a rotary lifting arm 402. When the cam follower plate 409 rises or falls, it can drive the ball spline shaft 404 and the rotary lifting arm 402 to rise or fall. The rotary lifting mechanism 401 also includes a rotary servo motor 407 and a synchronous pulley 405 driven and controlled by it. The spline sleeve of the ball spline shaft 404 is fixedly connected to the synchronous pulley 405 via a connecting sleeve.

[0053] When retrieving the needle, the rotary servo motor 407 drives the ball spline shaft 404 to rotate via the synchronous belt 405, reaching the needle retrieval position. Then, the lifting servo motor 408 rotates, driving the ball spline shaft 404 to descend, and the swing gripper 403 retracts to grab the needle on the picking arm 203. After that, the lifting servo motor 408 controls the swing gripper 403 to rise, completing the needle retrieval action. The rotary servo motor 407 controls the swing gripper 403 to swing back to the needle insertion position.

[0054] During the insertion process, the lifting servo motor 408 is activated, which drives the cam follower plate 409, ball spline shaft 404, rotating lifting arm 405 and swing gripper 403 to descend via the rotation of cam 406. The pin is inserted into the workpiece along the insertion guide block to complete the insertion.

[0055] like Figure 9 As shown, the clamping unit 6 and clamping unit 7 have the same structure. This embodiment uses clamping unit 6 as an example for structural description. Clamping unit 6 includes a clamping cylinder 603 and a clamping head 604 driven by the clamping cylinder 603. The clamping head 604 is designed with a symmetrical installation structure; when changing to different product models, the clamping head 604 can be mirrored. During operation, the clamping cylinder 603 drives the clamping head 604 to clamp the inserted needle. A precision pressure regulating valve 601 is connected to the clamping cylinder 603, and the clamping pressure is controlled by adjusting the pressure of the compressed gas.

Claims

1. An automatic pin insertion machine, characterized in that, include: The workpiece feeding and arranging unit feeds and arranges the workpieces and then transports them to the feeding unit. The first pin feeding and arranging unit feeds and arranges the first pin, and inserts the pin into the first position of the workpiece after the first pin is picked up by the first pin feeding unit. Clamping unit one clamps and fixes the pin one at the first position of the workpiece; The second pin feeding and arranging unit feeds and arranges the pins, and inserts the pins into the second position of the workpiece after the pins are picked up by the second pin feeding unit. Clamping unit two clamps and fixes the second pin on the second position of the workpiece; The feeding unit is used to transfer and transport workpieces between different workstations; The structure of the first and second pin feeding and aligning units is the same, both including a pin circular vibrating plate, a pin straight vibration track connected by the output of the pin circular vibrating plate, and a waiting mechanism, an ejection mechanism and a rotating material picking mechanism configured at the end of the pin straight vibration track. The waiting mechanism includes a material platform fixed to the end of the pin straight vibration track. A lifting block is movably inserted inside the material platform. The upper end of the lifting block is used to carry the pin and push the pin upward under the drive of the ejection mechanism. The lower end of the lifting block extends downward along the inside of the material platform and serves as the touch part of the ejection mechanism. The ejection mechanism is located below the waiting mechanism. It includes an ejection cylinder and an ejection block connected to the output of the ejection cylinder. When the ejection block moves upward, it can abut against the lower end of the lifting block, thereby lifting the lifting block upward along the inside of the material platform and lifting the foot needle upward. The rotary material handling mechanism is located on one side of the waiting mechanism and is used to remove the raised pins. Its structure includes a rotary cylinder and a material handling arm controlled and connected by the rotary cylinder. The end of the material handling arm has a negative pressure suction port connected to a vacuum generator. The material handling arm is driven by the rotary cylinder to swing to the material handling position and picks up the pins on the lifting block through the negative pressure suction port. Then, the rotary cylinder drives it to swing back to the initial position. The first and second pin insertion units have the same structure, including a rotary lifting mechanism, a rotary lifting arm, and a swing gripper; the rotary lifting mechanism is driven and connected to the rotary lifting arm, and the swing gripper is installed at the end of the rotary lifting arm; The rotary lifting mechanism includes a lifting servo motor and a cam connected to its output. The cam is driven by a cam follower plate. The top of the cam follower plate is connected to a ball spline shaft via a spherical bearing. The end of the ball spline shaft is connected to a rotary lifting arm. The rotary lifting mechanism also includes a rotary servo motor and a synchronous pulley driven and controlled by it. The spline sleeve of the ball spline shaft is fixedly connected to the synchronous pulley via a connecting sleeve.

2. The automatic pin insertion machine as described in claim 1, characterized in that, The workpiece feeding and aligning unit consists of a workpiece storage box, a workpiece circular vibrating plate, and a workpiece linear vibrating track, with the workpiece linear vibrating feeding track being connected to the feeding unit.

3. An automatic pin insertion machine as described in claim 1, characterized in that, The feeding unit includes a feeding track, a feeding component disposed on one side of the feeding track for feeding the workpiece on the track, and a positioning component disposed on the other side of the feeding track for limiting and fixing the workpiece on the track. The feeding assembly includes a servo motor module that travels along the feeding direction and a push rod cylinder that is mounted on top of the servo motor module and driven and controlled by it. The push rod cylinder has a push rod connected to its output, and a plurality of push plates are distributed on the push rod. The number and position of the positioning components correspond to the pin insertion station one, clamping station one, pin insertion station two, and clamping station two of the feeding track; its structure includes a positioning cylinder and a limiting gripper connected by the output of the positioning cylinder. The shape of the limiting gripper is adapted to the workpiece, and it can limit and fix the workpiece on the feeding track under the drive of the positioning cylinder.

4. An automatic pin insertion machine as described in claim 3, characterized in that, The feeding track has two pin insertion stations, one and two, each equipped with a pin insertion guide block. The pin insertion guide block includes a movable block fixed above the limiting gripper and a fixed block located at a predetermined position above the station. When the positioning cylinder drives the limiting gripper to insert and limit the workpiece, the movable block moves to align with the fixed block, and a pin insertion channel is formed between the two to guide and limit the pin.

5. An automatic pin insertion machine as described in claim 3, characterized in that, The front end of the feeding track is equipped with a connecting track, which is used to connect the direct vibration feeding track of the workpiece feeding and aligning unit and the connecting track of the feeding unit.

6. An automatic pin insertion machine as described in claim 5, characterized in that, A through-beam sensor is installed at the front end of the pin direct vibration track.

7. An automatic pin insertion machine as described in claim 1, characterized in that, The clamping unit one and clamping unit two have the same structure, including a clamping cylinder and a pressure head driven by the clamping cylinder.

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