A pin insertion apparatus for chip pins

Abstract

The application discloses a kind of chip pin's needle inserting equipment, it is related to needle inserting equipment technical field, including sliding table, lifting platform, center rod and rotating part, lifting platform is vertically moved and is arranged on sliding table, center rod is fixedly installed on lifting platform;Rotating part includes rotating drum and sliding part, rotating drum is rotatably connected with center rod, sliding part includes slide bar, guide rod and multiple pick-up chip pick-up unit, slide bar is slidably connected with rotating drum, guide rod is parallel with slide bar and is fixedly connected, each pick-up unit is distributed on guide rod along the axial direction of guide rod;Rotating part makes each pick-up unit simultaneously have positive downward target orientation in the stroke of rotating drum rotating on center rod, and sliding part can make each pick-up unit deviating from target orientation rotate to target orientation along guide rod circumferentially one by one when passing through center rod in the stroke of slide bar sliding on rotating drum.The application can grasp multiple chips at a time and insert them into PCB one by one, and the chip grasping efficiency is high.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pin inserting equipment, in particular to a pin inserting equipment for chip pins. BACKGROUND

[0002] DIP packaged chips are vertically inserted into PCB through-hole to realize electrical connection, which is one of the common processes in electronic assembly. There are usually two insertion methods. One is manual insertion method, which is suitable for small batch production or maintenance operation. The thumb and index finger pinch the two sides of the chip to ensure the verticality of the chip. The chip is placed above the PCB to make the two rows of pins completely aligned with the corresponding through-hole. Stable pressure is applied vertically downward to ensure that all pins completely pass through the PCB, and 1-2mm is exposed on the back.

[0003] The other is machine insertion method, which is suitable for mass production. The target position on the PCB is identified by an optical system, and the mechanical arm accurately presses the chip pins vertically into the PCB through-hole. The force is uniform and controllable, and the efficiency is much higher than that of manual insertion method. The key to pin insertion is the control of insertion angle, which must be kept basically vertical (deviation less than 1°) to avoid problems such as incomplete insertion of some pins and bending deformation of pins.

[0004] At present, the mechanical arm in the machine insertion method can only grab a single chip at a time. After inserting the grabbed chip into the PCB, the next chip is grabbed. The path repetition rate is high, and the chip grabbing efficiency is low. SUMMARY

[0005] The purpose of the present application is to provide a pin inserting equipment for chip pins to solve the problem of high path repetition rate and low chip grabbing efficiency caused by the mechanical arm only grabbing a single chip in the prior art.

[0006] In order to achieve the above purpose, the present application provides the following technical scheme: a pin inserting equipment for chip pins, comprising a sliding table, a lifting table, a center rod and a rotating part. The lifting table is vertically moved and arranged on the sliding table, and the center rod is fixedly installed on the lifting table. The rotating part comprises a rotating drum and a sliding part. The rotating drum is rotationally connected with the center rod. The sliding part comprises a sliding rod, a guide rod and a plurality of pick-up units for picking up chips. The sliding rod is slidingly connected with the rotating drum. The guide rod is parallel to and fixedly connected with the sliding rod. Each pick-up unit is distributed on the guide rod along the axial direction of the guide rod. The rotating part makes each pick-up unit have a target direction downward to pick up a chip in the rotating stroke of the rotating drum on the center rod. The sliding part can make each pick-up unit deviating from the target direction rotate to the target direction along the guide rod when passing through the center rod to insert the chip in the sliding stroke of the sliding rod on the rotating drum.

[0007] Further, the pickup unit comprises a sleeve, a suction disc assembly, a trigger assembly and an elastic member, the sleeve is movably sleeved on the guide rod, the suction disc assembly is fixedly installed on the sleeve, the trigger assembly comprises a trigger rod movably connected with the sleeve in a radial direction and a guide groove formed on the guide rod, the guide groove comprises a first straight groove, a spiral groove and a second straight groove connected in sequence, a plug hole capable of accommodating the trigger rod is arranged in the second straight groove in the radial direction of the sleeve, one end of the trigger rod is slidably connected with the guide groove, and the other end is capable of being slidably and abuttingly connected with the central rod, and the elastic force of the elastic member acts on the sleeve in the direction of the first straight groove.

[0008] Further, an arc-shaped portion is arranged at the end of the trigger rod away from the guide groove, a blocking portion capable of blocking the arc-shaped portion and matched with the arc-shaped portion is arranged on the central rod, and the blocking portion and / or the arc-shaped portion is provided with a wedge surface.

[0009] Further, a first compression spring is sleeved on the trigger rod, one end of the first compression spring is abutted against the sleeve, and the other end is abutted against the arc-shaped portion.

[0010] Further, the elastic member comprises a second compression spring, one end of the second compression spring is abutted against a limiting ring on the guide rod, and the other end is abutted against the sleeve.

[0011] Further, the slide table is horizontally movably arranged on a support on the machining table and is driven to slide by a first driving member, the first driving member comprises a first ball screw, a screw rod of the first ball screw is rotatably connected with the support, and a nut of the first ball screw is fixedly connected with the slide table.

[0012] Further, one side of the machining table is provided with a feeding assembly for batch supplying chips, and the slide table can send each pickup unit to the feeding assembly to pick up the chips during movement on the support.

[0013] Further, the lifting table is driven to lift by a second driving member, the second driving member comprises a second ball screw, a screw rod of the second ball screw is rotatably connected with the slide table, and a nut of the second ball screw is fixedly connected with the lifting table.

[0014] Further, the rotating drum is driven to rotate by a third driving member, the third driving member comprises a first air cylinder, a cylinder body of the first air cylinder is rotatably connected with the lifting table, and a piston rod of the first air cylinder is eccentrically rotatably connected with the rotating drum.

[0015] Further, the slide rod is driven to slide by a fourth driving member, the fourth driving member comprises a second air cylinder, a cylinder body of the second air cylinder is fixedly connected with the rotating drum, and a piston rod of the second air cylinder is fixedly connected with the slide rod.

[0016] Compared with the prior art, the chip pin inserting device provided by the application can grab multiple chips at a time and insert them into the PCB one by one, and the chip grabbing efficiency is high; and in the sliding stroke of the sliding member, each pickup unit deviating from the target orientation can be rotated to the target orientation along the guide rod one by one when passing through the center rod, so that only one pickup unit faces the target orientation when the lifting platform moves down for pin inserting operation each time, and when the chip on the pickup unit at the target orientation is inserted into the PCB, other pickup units will not cause interference. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to make the technical solutions in the embodiments of the present application or the prior art clearer, the drawings used in the embodiments will be briefly introduced as follows.

[0018] Figure 1 The overall structure schematic diagram provided for the embodiments;

[0019] Figure 2 The overall structure front view provided for the embodiments;

[0020] Figure 3 The connection structure schematic diagram of the lifting platform and the rotating member provided for the embodiments Figure I ;

[0021] Figure 4 The connection structure schematic diagram of the lifting platform and the rotating member provided for the embodiments Figure II ;

[0022] Figure 5 The structure schematic diagram of the sliding member provided for the embodiments;

[0023] Figure 6 The structure schematic diagram of the pickup unit when deviating from the target orientation provided for the embodiments;

[0024] Figure 7 The structure schematic diagram of the pickup unit when located at the target orientation provided for the embodiments;

[0025] Figure 8 The structure cross-sectional view when the trigger rod is inserted into the insertion hole provided for the embodiments;

[0026] Figure 9 The structure schematic diagram of the guide groove provided for the embodiments;

[0027] Figure 10 The structure schematic diagram when the chip pin inserting of the chip on each pickup unit is completed provided for the embodiments;

[0028] Figure 11 The structure schematic diagram when each pickup unit picks up the chip on the feeding assembly provided for the embodiments;

[0029] Figure 12Structure schematic diagram of the bottom end of the trigger lever slidingly fitted with the guide groove provided for the embodiment;

[0030] Figure 13 Structure cross-sectional view of the bottom end of the trigger lever located in the first straight groove provided for the embodiment;

[0031] Figure 14 Structure cross-sectional view of the bottom end of the trigger lever located in the spiral groove provided for the embodiment;

[0032] Figure 15 Structure cross-sectional view of the bottom end of the trigger lever located in the second straight groove provided for the embodiment;

[0033] Figure 16 Structure cross-sectional view of the bottom end of the trigger lever located in the jack provided for the embodiment.

[0034] Explanation of reference numerals:

[0035] 1, machining table; 2, support; 3, sliding table; 4, first driving member; 5, lifting table; 6, second driving member; 7, center rod; 71, blocking part; 8, rotating drum; 9, third driving member; 10, sliding rod; 11, guide rod; 12, pickup unit; 120, collar; 121, suction cup assembly; 122, elastic member; 123, trigger lever; 124, arc-shaped part; 125, first compression spring; 126, first straight groove; 127, spiral groove; 128, second straight groove; 129, jack; 13, fourth driving member; 14, feeding assembly; 15, positioning table; 16, fifth driving member; 17, connecting member; 18, connecting rod. DETAILED DESCRIPTION

[0036] In order for those skilled in the art to better understand the technical solutions of the present application, the present application will be further described in detail below with reference to the drawings.

[0037] Please refer to Figures 1-16 The chip pin insertion device provided by the embodiment of the present application comprises a machining table 1, a positioning table 15, a feeding assembly 14, a sliding table 3, a lifting table 5, a center rod 7 and a rotating member. The sliding table 3 is movably arranged on the support 2 on the machining table 1 along the X axis and is driven to slide by the first driving member 4. The first driving member 4 is preferably a first ball screw, the screw rod of the first ball screw is arranged along the X axis and is rotationally connected with the support 2, and the nut of the first ball screw is fixedly connected with the sliding table 3. The lifting table 5 is movably arranged on the sliding table 3 along the Y axis, and the center rod 7 is fixedly installed on the lifting table 5. The lifting table 5 is driven to lift by the second driving member 6. The second driving member 6 is preferably a second ball screw, the screw rod of the second ball screw is arranged along the Y axis and is rotationally connected with the sliding table 3, and the nut of the second ball screw is fixedly connected with the lifting table 5.

[0038] The rotating member comprises a rotating drum 8 and a sliding member, the sliding member is slidingly connected to the rotating drum 8, the rotating drum 8 is rotatably connected to the center rod 7 through a rotating bearing, so that the sliding member can rotate relative to the center rod 7 through the rotating drum 8, that is, the rotating member as a whole can rotate relative to the center rod 7. The rotating drum 8 is driven to rotate by a third driving member 9, which is preferably a first cylinder, the cylinder body of the first cylinder is rotatably connected to the lifting platform 5, and the piston rod of the first cylinder is eccentrically rotatably connected to the rotating drum 8. The sliding member comprises a sliding rod 10, a guide rod 11 and a plurality of pickup units 12 for picking up chips, the guide rod 11 is parallel to the sliding rod 10 and is fixedly connected through a connecting member 17, each pickup unit 12 is distributed on the guide rod 11 along the axial direction of the guide rod 11, and the sliding rod 10 is slidingly connected to the rotating drum 8 through a linear bearing, so that the guide rod 11 and each pickup unit 12 can slide relative to the rotating drum 8 through the sliding rod 10, that is, the sliding member as a whole can slide relative to the rotating drum 8. The sliding rod 10 is driven to slide by a fourth driving member 13, which is preferably a second cylinder arranged along the X axis, the cylinder body of the second cylinder is fixedly connected to the rotating drum 8 through a connecting rod 18, and the piston rod of the second cylinder is fixedly connected to the sliding rod 10. The number of pickup units 12 is set according to requirements, preferably 5-10, which can grab multiple chips at a time and insert them one by one into the PCB, with high chip grabbing efficiency.

[0039] The rotating member can make each pickup unit 12 have a target orientation downward at the same time to pick up chips in the rotating stroke of the rotating drum 8 on the center rod 7, of course, the rotating member can also rotate to make each pickup unit 12 rotate away from the target orientation, and the sliding member can make each pickup unit 12 rotate to the target orientation along the guide rod 11 to insert the chip when passing through the center rod 7 in the sliding stroke of the sliding rod 10 on the rotating drum 8, so that the lifting platform 5 has and only has one pickup unit 12 facing the target orientation when moving down each time to perform the pin insertion operation, so that the chips on the pickup unit 12 at the target orientation are inserted into the PCB, and other pickup units 12 will not cause interference.

[0040] The feeding assembly 14 is arranged on one side of the machining table 1, and is used to batch supply chips. During the movement of the sliding table 3 relative to the support 2, each pickup unit 12 can be sent to the feeding assembly 14 to pick up chips, and the feeding assembly 14 preferably adopts a material conveying belt.

[0041] The positioning table 15 is arranged on the machining table 1 and driven to slide by the fifth driving member 16 along the Z axis, and the fifth driving member 16 is preferably a third cylinder arranged along the Z axis, the cylinder body of the third cylinder is fixedly connected to the machining table 1, and the piston rod of the third cylinder is fixedly connected to the positioning table 15. Through the left-right movement adjustment of the sliding table 3 and the front-back movement adjustment of the positioning table 15, the pickup unit 12 at the target orientation can insert the chip into the preset position on the PCB.

[0042] It is to be noted that the X-axis and the Z-axis are mutually perpendicular horizontal directions, and the Y-axis is a vertical direction.

[0043] The structure of each pickup unit 12 is identical. Each pickup unit 12 comprises a sleeve 120, a chuck assembly 121, a trigger assembly and a resilient member 122. The sleeve 120 is movably sleeved on the guide rod 11, the inner diameter of the sleeve 120 is adapted to the outer diameter of the guide rod 11, and the sleeve 120 has axial and circumferential freedom on the guide rod 11, that is, the sleeve 120 can slide along the axial direction of the guide rod 11 and rotate along the circumferential direction of the guide rod 11. The chuck assembly 121 is fixedly installed on the sleeve 120 by bolts, and the pickup unit 12 faces the target orientation, that is, the chuck assembly 121 faces downward. The chuck assembly 121 uses the prior art, and thus no further description is given. The trigger assembly comprises a trigger rod 123 and a guide groove. The trigger rod 123 is elastically and slidably connected to the sleeve 120 in the radial direction of the sleeve 120, that is, a sliding hole is formed in the sleeve 120 in the radial direction, and the trigger rod 123 is slidably arranged in the sliding hole. A first compression spring 125 is sleeved on the trigger rod 123 in the axial direction, one end of the first compression spring 125 abuts against the sleeve 120, and the other end abuts against an arc-shaped portion 124. The guide groove is formed on the circumferential surface of the guide rod 11, and comprises a first straight groove 126, a spiral groove 127 and a second straight groove 128 which are sequentially connected from left to right. The first straight groove 126 and the second straight groove 128 are parallel to the axial direction of the guide rod 11. The spiral groove 127 has both axial and circumferential spans on the guide rod 11. One end of the spiral groove 127 is connected to the first straight groove 126, and the other end is connected to the second straight groove 128 (as shown in Figure 9 、 Figure 12 ). One end of the trigger rod 123 is slidably connected to the guide groove, and the other end is provided with the arc-shaped portion 124. An insertion hole 129 is formed in the second straight groove 128 away from one end of the spiral groove 127 in the radial direction of the sleeve 120. The bottom of the trigger rod 123 is adapted to the insertion hole 129, and the trigger rod 123 can be inserted into the insertion hole 129 when the trigger rod 123 is aligned with the insertion hole 129. The central rod 7 is provided with a blocking portion 71 which can block and is adapted to the arc-shaped portion 124. At least one of the blocking portion 71 and the arc-shaped portion 124 has a wedge surface, and the trigger rod 123 can be slidably and abuttingly connected to the blocking portion 71 of the central rod 7 through the arc-shaped portion 124. The resilient member 122 is preferably a second compression spring which is sleeved on the guide rod 11. One end of the second compression spring abuts against a limiting ring on the guide rod 11, and the other end abuts against the sleeve 120. The elastic force of the second compression spring acts on the sleeve 120 in the direction of the first straight groove 126.

[0044] In operation, the PCB is fixed to the positioning table 15, and each pickup unit 12 is located at the target orientation. The first driving member 4 drives the sliding table 3 to move, and the sliding table 3 drives each pickup unit 12 to move to the feeding assembly 14 to pick up the chip (as shown in Figure 11); then the third driving member 9 drives the rotating member to rotate, so that each pickup unit 12 rotates away from the target position, and the first driving member 4 drives the sliding table 3 to move to the positioning table 15; the fourth driving member 13 starts to drive the sliding member to move leftward in steps, and the arc-shaped part 124 of the pickup unit 12 arranged at the first left position contacts the blocking part 71 and is blocked by the blocking part 71 (as shown in Figure 6 ). Figures 13-15 ), during the sliding cooperation of the helical groove 127 and the trigger lever 123, the trigger lever 123 changes its position in the circumferential direction of the guide rod 11, so that the sleeve ring 120 and the suction disc assembly 121 rotate relative to the guide rod 11 (although the arc-shaped part 124 rotates relative to the blocking part 71 in the circumferential direction of the guide rod 11, the arc-shaped part 124 still abuts against the blocking part 71), so that the pickup unit 12 is switched to the target position, i.e., the suction disc assembly 121 faces downward to the PCB, and the second compression spring is further compressed to store energy (as shown in Figures 1-3 , Figure 7 ).

[0045] Then the fourth driving member 13 stops, the first driving member 4 adjusts the left-right position of the sliding table 3, the fifth driving member 16 adjusts the front-rear position of the positioning table 15, so that the chip on the pickup unit 12 in the target position is aligned with the preset position on the PCB, and the second driving member 6 drives the lifting table 5 to move downward, so that the pickup unit 12 in the target position inserts the chip pin into the PCB.

[0046] Then the second driving member 6 drives the lifting table 5 to move upward to reset, and the fourth driving member 13 continues to drive the guide rod 11 to move leftward, and the guide rod 11 and the guide groove still move leftward relative to the trigger lever 123 and the sleeve ring 120 of the pickup unit 12 in the target position, until the insertion hole 129 at the right end of the second straight groove 128 is aligned with the bottom end of the trigger lever 123 (as shown in Figure 15 ). Figure 8 , Figure 16), the first compression spring 125 is also further compressed to store energy, until the blocking part 71 no longer blocks the arc part 124, the guide rod 11 moving to the left can drive the trigger rod 123 to move to the left to pass the blocking part 71, at this time the bottom of the central rod 7 will limit the movement of the trigger rod 123 in the length direction of the trigger rod 123, after the trigger rod 123 moves to the left to completely get out of the right below the central rod 7, the central rod 7 no longer blocks the trigger rod 123 in the length direction of the trigger rod 123, then the elastic force of the first compression spring 125 is released, so that the trigger rod 123 slides relative to the ring 120 to get out of the insertion hole 129, the bottom end of the trigger rod 123 moves up into the second straight slot 128, after the trigger rod 123 gets out of the insertion hole 129, the elastic force of the second compression spring can be released, so that the ring 120 slides to the left along the guide rod 11, the ring 120 drives the trigger rod 123 to slide reversely (that is, the trigger rod 123 slides to the left through the second straight slot 128, the spiral slot 127 and the first straight slot 126 in turn, and the trigger rod 123 finally stops at the left end of the first straight slot 126), so that the ring 120 reversely rotates, so that the pickup unit 12 rotates away from the target position.

[0047] Next, the fourth driving part 13 continues to drive the sliding part to move to the left, so that the second pickup unit 12 on the left repeats the steps of the first pickup unit 12, the chip on the second pickup unit 12 is inserted into the PCB, until all the chips on the pickup units 12 are inserted, the third driving part 9 drives the rotating part to rotate as a whole to the target position (such as Figure 10 ), the fourth driving part 13 drives the sliding part to move to the right, so that each pickup unit 12 is on the right side of the central rod 7, and then the first driving part 4 drives the sliding table 3 to move to the right to make each pickup assembly to grab the next round of chips.

[0048] The above describes some exemplary embodiments of the present application, which should not be understood as limiting the scope of protection of the claims of the present application. For those skilled in the art, the described embodiments can be modified in other different ways without departing from the spirit and scope of the present application.

Claims

1. A pin device for chip pins, characterized in that The device comprises a sliding table, a lifting table, a central rod and a rotating member, the lifting table is vertically movably arranged on the sliding table, and the central rod is fixedly arranged on the lifting table. The rotating member comprises a rotating cylinder and a sliding member, the rotating cylinder is rotatably connected with the central rod, the sliding member comprises a sliding rod, a guide rod and a plurality of pickup units for picking up chips, the sliding rod is slidably connected with the rotating cylinder, the guide rod is parallel to the sliding rod and fixedly connected with the sliding rod, and each pickup unit is distributed on the guide rod along the axial direction of the guide rod. The pickup unit comprises a sleeve ring, a suction disc assembly, a trigger assembly and an elastic member, the sleeve ring is movably sleeved on the guide rod, the suction disc assembly is fixedly arranged on the sleeve ring, the trigger assembly comprises a trigger rod which is elastically and slidably connected with the sleeve ring in the radial direction and a guide groove which is arranged on the guide rod, the guide groove comprises a first straight groove, a spiral groove and a second straight groove which are sequentially connected, a plug hole capable of accommodating the trigger rod is arranged in the second straight groove in the radial direction of the sleeve ring, one end of the trigger rod is slidably connected with the guide groove, and the other end of the trigger rod is capable of being in sliding contact with the central rod, and the elastic force of the elastic member acts on the sleeve ring in the direction of the first straight groove. The rotating member enables each pickup unit to have a target orientation of facing downward to pick up chips in the rotating stroke of the rotating cylinder on the central rod, and the sliding member enables each pickup unit deviating from the target orientation to rotate on the guide rod to the target orientation to insert the chip when passing through the central rod in the sliding stroke of the sliding rod on the rotating cylinder.

2. The chip pin footprint device of claim 1, wherein, An arc-shaped portion is arranged at the end of the trigger rod away from the guide groove, a blocking portion capable of blocking the arc-shaped portion and matched with the arc-shaped portion is arranged on the central rod, and a wedge surface is arranged on the blocking portion and / or the arc-shaped portion.

3. The chip pin foot insertion apparatus of claim 2, wherein, A first compression spring is sleeved on the trigger rod, one end of the first compression spring is in abutment with the sleeve ring, and the other end of the first compression spring is in abutment with the arc-shaped portion.

4. The chip pin footprint device of claim 1, wherein, The elastic member comprises a second compression spring, one end of the second compression spring is in abutment with a limiting ring on the guide rod, and the other end of the second compression spring is in abutment with the sleeve ring.

5. The chip pin footprint device of claim 1, wherein, The sliding table is horizontally movably arranged on a support of the machining table and is driven to slide by a first driving member, the first driving member comprises a first ball screw, a screw rod of the first ball screw is rotatably connected with the support, and a screw nut of the first ball screw is fixedly connected with the sliding table.

6. The chip pin foot insertion apparatus of claim 5, wherein, One side of the machining table is provided with a feeding assembly for supplying chips in batches, and the sliding table can send each pickup unit to the feeding assembly to pick up chips in the process of moving on the support.

7. The chip pin footprint device of claim 1, wherein, The lifting table is driven to lift by a second driving member, the second driving member comprises a second ball screw, a screw rod of the second ball screw is rotatably connected with the sliding table, and a screw nut of the second ball screw is fixedly connected with the lifting table.

8. The chip pin footprint device of claim 1, wherein, The rotating cylinder is driven to rotate by a third driving member, the third driving member comprises a first air cylinder, a cylinder body of the first air cylinder is rotatably connected with the lifting table, and a piston rod of the first air cylinder is eccentrically rotatably connected with the rotating cylinder.

9. The chip pin footprint device of claim 1, wherein, The sliding rod is driven to slide by a fourth driving member, the fourth driving member comprises a second air cylinder, a cylinder body of the second air cylinder is fixedly connected with the rotating cylinder, and a piston rod of the second air cylinder is fixedly connected with the sliding rod.

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