Chip mounter high-precision limiting device for printed circuit board processing

Abstract

The utility model discloses a high-precision limiting device of a chip mounter for processing a printed circuit board, and particularly relates to the field of circuit board printing, which comprises a telescopic cylinder main shell, two ends of the telescopic cylinder main shell are connected with air inlet and outlet connecting blocks, the air inlet and outlet connecting blocks are connected with air inlet and outlet connecting joints, and the air inlet and outlet connecting joints are connected with the telescopic cylinder main shell. A connecting air pipe is connected into the air inlet and outlet connector, an air inlet and outlet control block is connected to the end, away from the air inlet and outlet connector, of the connecting air pipe, and an electric actuator is connected to one side of the air inlet and outlet control block. The distance between the device and a circuit board is measured through the laser distance measuring sensor, the limiting device and the magnetic switch connected with the limiting device are driven to move through the measured distance, and when the induction magnetic ring on the outer side of the telescopic rod moves to the position of the magnetic switch, the magnetic attraction switch controls gas of the gas inlet and outlet control block to be turned on and off, so that gas leakage is avoided. Therefore, precise movement for controlling the movement distance of the mounting head and the laser distance measuring sensor is completed.

Description

Technical Field

[0001] The utility model relates to the field of circuit board printing, and more specifically, to a high-precision limit device for a chip mounter used for processing a printed circuit board. Background Art

[0002] Printed circuit boards are important electronic components, supporting electronic components and carriers for electrical interconnection of electronic components. Printed circuit boards are composed of insulating base plates, connecting wires and pads for assembling and welding electronic components. They have the dual functions of conductive circuits and insulating base plates.

[0003] After searching, the existing patent (publication number: CN117156840A) discloses a UPS power supply circuit board processing chip placement machine, including a sleeve bracket, the internal movable sleeve of the sleeve bracket is connected with a transmission shaft, and a mounting head is fixedly installed at the bottom end of the transmission shaft, and the top of the outer surface of the transmission shaft is fixedly sleeved with an action ring, and one side of the end of the sleeve bracket is connected to a dispensing bracket through an axle pin, and the top of the dispensing bracket is fixedly installed with an inclined dispensing nozzle. The present application provides a UPS power supply circuit board processing chip placement machine. For the arrangement of the sleeve bracket and its upper structure, the dispensing bracket can be triggered during the upward movement of the mounting head adsorption element on the transmission shaft, and the guide groove and the communication port are connected to circulate the colloid, and then in the process of the walking moving mechanism driving the sleeve bracket and the structure on it to move to the top of the circuit board, the bottom end of the element is glued, thereby effectively reducing the invalid displacement of the mounting head on the existing chip placement machine. The inventor found that the prior art has the following problems in the process of realizing the utility model:

[0004] The existing circuit board placement machine cannot accurately limit the telescopic height of the dispensing or pasting head. When the thickness of the processed circuit boards is different, the telescopic action of the dispensing or pasting head cannot be closely adjusted. When the dispensing or pasting head is extended and lowered for too long, the circuit board is easily damaged. When the dispensing or pasting head is extended and lowered for too short a length, the electronic components cannot be connected to the circuit board.

[0005] Therefore, in order to solve the above problems, a high-precision limit device for a placement machine used for printed circuit board processing is proposed. Utility Model Content

[0006] In order to overcome the above defects of the prior art, the utility model provides a high-precision limit device for a placement machine for printed circuit board processing to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-precision limit device for a placement machine for printed circuit board processing, comprising a telescopic cylinder main housing, both ends of the telescopic cylinder main housing are connected to inlet and outlet air connection blocks, and the inlet and outlet air connection blocks are connected to inlet and outlet air connection joints, a connecting air pipe is connected inside the inlet and outlet air connection joint, and one end of the connecting air pipe away from the inlet and outlet air connection joint is connected to an inlet and outlet air control block, and one side of the inlet and outlet air control block is connected to an electric actuator, and one side of the electric actuator is connected to an electric switch;

[0008] A telescopic rod is arranged inside the main shell of the telescopic cylinder, and one end of the telescopic rod is connected to a patch connector, the bottom of the patch connector is connected to a mounting head and a laser ranging sensor, and one side of the main shell of the telescopic cylinder is connected to a limit motor.

[0009] Preferably, two groups of air outlet interfaces are provided on one side of the air inlet and outlet control block, and the connecting air pipe is plugged into the air outlet interface, and a gas tank connecting pipe is connected to the side of the air inlet and outlet control block away from the air outlet interface.

[0010] Preferably, a cylinder box and a limit box are provided in the main housing of the telescopic cylinder, and the telescopic rod is connected in the cylinder box, and an induction magnetic ring is sleeved on the outer side of the telescopic rod.

[0011] Preferably, a transmission screw is arranged in the limit box, a coupling is connected to the limit motor, and the transmission screw is connected in the coupling.

[0012] Preferably, a limiting device is connected to the transmission screw, and the limiting device includes a transmission connecting block and a magnetic switch. The transmission connecting block is connected to the transmission screw, and the magnetic switch is connected to a side of the transmission connecting block close to the cylinder box.

[0013] Preferably, one side of the magnetic switch is connected to a control connection block, and a side of the control connection block away from the magnetic switch is connected to a movement indication block, and one end of the movement indication block is connected to a wiring block.

[0014] Preferably, a connecting slot is connected to the main housing of the telescopic cylinder, and the junction block is connected in the connecting slot, and a control wire is connected between the electric switch and the junction block.

[0015] Technical effects and advantages of the utility model:

[0016] 1. Compared with the prior art, the high-precision limit device of the chip mounter for printed circuit board processing measures the precise distance between the chip connector and the circuit board through a laser distance measuring sensor, and measures the spacing between the chip connector and the circuit board through the laser distance measuring sensor. According to the measured spacing distance, the limit motor drives the transmission screw to rotate in the coupling, and the transmission screw drives the limit device and the magnetic switch connected to it to move through the transmission connection block. During the movement, the limit device drives the control connection block to move, and the control connection block drives the movement indication block and the wiring block connected to it to move.

[0017] 2. Compared with the prior art, the high-precision limit device for the placement machine for printed circuit board processing can accurately control the telescopic length of the cylinder. The gas in the gas tank enters the inlet and outlet control block through the gas tank connecting pipe, and the inlet and outlet control block controls the direction of the gas flow to the two groups of gas outlet interfaces, and the gas flows from the gas outlet interfaces to the inlet and outlet connecting joints on the two groups of gas inlet and outlet connection blocks through the connecting gas pipes. The telescopic rod is telescoped by the inlet and outlet directions of the two ends of the main shell of the telescopic cylinder. When the induction magnetic ring on the outside of the telescopic rod moves to the position of the magnetic switch, the magnetic switch controls the gas opening and closing of the inlet and outlet control block, thereby completing the precise movement of the control mounting head and the moving distance of the laser ranging sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0019] Figure 2 It is a structural schematic diagram of the main housing of the telescopic cylinder of the utility model.

[0020] Figure 3 It is a schematic diagram of the side sectional structure of the main housing of the telescopic cylinder of the utility model.

[0021] Figure 4 This is a schematic diagram of the structure of the limit device of the utility model.

[0022] Figure 5 This is a schematic diagram of the structure of the air inlet and outlet control block of the utility model.

[0023] The accompanying drawings are marked as follows: 1. main housing of telescopic cylinder; 2. air inlet and outlet connection block; 3. telescopic rod; 4. patch connector; 5. limit motor; 6. air inlet and outlet control block; 7. electric actuator; 8. electric switch; 9. limit device; 11. connecting slide; 12. cylinder box; 13. limit box; 131. transmission screw; 21. air inlet and outlet connection joint; 211. connecting air pipe; 41. mounting head; 42. laser ranging sensor; 51. coupling; 61. gas tank connecting pipe; 62. air outlet interface; 81. control wire; 91. transmission connection block; 92. magnetic switch; 93. control connection block; 94. movement indication block; 941. wiring block. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Example 1

[0026] As attached Figure 1 to Figure 2 A high-precision limit device for a placement machine for printed circuit board processing shown in FIG. comprises a telescopic cylinder main housing 1, both ends of the telescopic cylinder main housing 1 are connected to an inlet and outlet air connection block 2, and the inlet and outlet air connection block 2 is connected to an inlet and outlet air connection joint 21, a connecting air pipe 211 is connected inside the inlet and outlet air connection joint 21, and an end of the connecting air pipe 211 away from the inlet and outlet air connection joint 21 is connected to an inlet and outlet air control block 6, and an electric actuator 7 is connected to one side of the inlet and outlet air control block 6, and an electric switch 8 is connected to one side of the electric actuator 7;

[0027] A telescopic rod 3 is arranged inside the telescopic cylinder main shell 1, and one end of the telescopic rod 3 is connected to a patch connector 4, the bottom of the patch connector 4 is connected to a mounting head 41 and a laser ranging sensor 42, and a limit motor 5 is connected to one side of the telescopic cylinder main shell 1.

[0028] Among them: the main shell 1 of the telescopic cylinder is connected to the connecting air pipe 211 through the inlet and outlet connecting joints 21 on the inlet and outlet connecting blocks 2 at both ends thereof, and is connected to the inlet and outlet control block 6 through the connecting air pipe 211, and the electric actuator 7 controls the inlet and outlet control block 6 to control the direction of the inlet and outlet air, thereby controlling the telescopic direction of the telescopic rod 3 and the patch connector 4 connected thereto, and then controlling the moving direction of the mounting head 41 and the laser ranging sensor 42, and the mounting head 41 is used to mount electrical components on the circuit board, the laser ranging sensor 42 is a laser sensor of the signal LR, and the laser ranging sensor 42 is used to measure the distance between the patch connector 4 and the circuit board, thereby more accurately controlling the telescopic length of the telescopic rod 3, and during the operation, the telescopic length of the telescopic rod 3 is controlled with high precision by the limit motor 5.

[0029] Example 2

[0030] Based on Example 1, the solution in Example 1 is further detailed in combination with the following specific working method. Figures 1 to 5 As shown, see the following description for details:

[0031] As a preferred embodiment, two groups of air outlet interfaces 62 are provided on one side of the air inlet and outlet control block 6, and the connecting air pipe 211 is inserted into the air outlet interface 62, and the side of the air inlet and outlet control block 6 away from the air outlet interface 62 is connected with a gas tank connecting pipe 61; further, the air inlet and outlet control block 6 is connected to the gas tank through the gas tank connecting pipe 61, and the gas in the gas tank enters the air inlet and outlet control block 6 through the gas tank connecting pipe 61, and the direction of the gas flow to the two groups of air outlet interfaces 62 is controlled by the air inlet and outlet control block 6, and the gas flows from the air outlet interface 62 through the connecting air pipe 211 to the two groups of air inlet and outlet connecting joints 21 on the air inlet and outlet connecting blocks 2, and the telescopic rod 3 is telescopically extended by the telescopic cylinder main shell 1 through the direction of the air inlet and outlet.

[0032] As a preferred embodiment, a cylinder box 12 and a limit box 13 are provided in the main shell 1 of the telescopic cylinder, and the telescopic rod 3 is connected in the cylinder box 12, and an induction magnetic ring 31 is sleeved on the outer side of the telescopic rod 3; further, two sets of inlet and outlet air connection joints 21 are connected in the cylinder box 12.

[0033] As a preferred embodiment, a transmission screw 131 is provided in the limit box 13, a coupling 51 is connected to the limit motor 5, and the transmission screw 131 is connected in the coupling 51; further, the limit motor 5 is connected in the limit box 13, and the transmission screw 131 is driven to rotate in the coupling 51 by the limit motor 5.

[0034] As a preferred embodiment, a limiting device 9 is connected to the transmission screw 131, and the limiting device 9 includes a transmission connecting block 91 and a magnetic switch 92. The transmission connecting block 91 is connected to the transmission screw 131, and the magnetic switch 92 is connected to the side of the transmission connecting block 91 close to the cylinder box 12; further, the transmission screw 131 drives the limiting device 9 and the magnetic switch 94 connected thereto to move through the transmission connecting block 91.

[0035] As a preferred embodiment, a control connection block 93 is connected to one side of the magnetic switch 92, and a moving indication block 94 is connected to the side of the control connection block 93 away from the magnetic switch 92, and one end of the moving indication block 94 is connected to a wiring block 941; further, the limit device 9 drives the control connection block 93 to move during the movement, and the control connection block 93 drives the moving indication block 94 and the wiring block 941 connected thereto to move, and when the induction magnetic ring 31 on the outer side of the telescopic rod 3 moves to the position of the magnetic switch 92, the magnetic switch 92 controls the gas opening and closing of the inlet and outlet air control block 6.

[0036] As a preferred embodiment, a connecting slot 11 is connected to the main housing 1 of the telescopic cylinder, and a terminal block 941 is connected in the connecting slot 11, and a control wire 81 is connected between the electric switch 8 and the terminal block 941; further, the control connecting block 93 and the movement indicating block 94 are moved along the direction of the connecting slot 11, and the magnetic switch 92 is controlled by the terminal block 941 through the control wire 81 to control the opening and closing of the electric switch 8.

[0037] The working process of the utility model is as follows: first, the telescopic cylinder main shell 1 is connected to the connecting air pipe 211 through the inlet and outlet connecting joints 21 on the inlet and outlet connecting blocks 2 at both ends thereof, and is connected to the inlet and outlet control block 6 through the connecting air pipe 211, and the inlet and outlet control block 6 is connected to the gas tank through the gas tank connecting pipe 61, and the gas in the gas tank enters the inlet and outlet control block 6 through the gas tank connecting pipe 61, and the gas flow to the two groups of gas outlet interfaces 62 is controlled by the inlet and outlet control block 6, and the gas flows from the gas outlet interfaces 62 to the inlet and outlet connecting joints 21 on the two groups of gas inlet and outlet connecting blocks 2 respectively through the connecting air pipe 211, and the telescopic rod 3 is telescoped through the inlet and outlet directions of the two ends of the telescopic cylinder main shell 1;

[0038] When the SMT machine is printing the circuit board, the laser distance sensor 42 first measures the distance between the SMT connector 4 and the circuit board, so as to more accurately control the telescopic length of the telescopic rod 3, and the limit motor 5 controls the telescopic length of the telescopic rod 3 with high precision during operation, and the electric actuator 7 controls the air inlet and outlet control block 6 to control the direction of the air inlet and outlet, thereby controlling the telescopic direction of the telescopic rod 3 and the SMT connector 4 connected thereto, and further controlling the moving direction of the mounting head 41 and the laser distance sensor 42;

[0039] The laser distance measuring sensor 42 measures the distance between the circuit board and the limit motor 5 according to the measured distance, and the transmission screw 131 is driven to rotate in the coupling 51 by the limit motor 5, and the transmission screw 131 drives the limit device 9 and the magnetic switch 94 connected thereto to move through the transmission connecting block 91. During the movement, the limit device 9 drives the control connecting block 93 to move, and the control connecting block 93 drives the movement indicating block 94 and the wiring block 941 connected thereto to move. When the induction magnetic ring 31 on the outer side of the telescopic rod 3 moves to the position of the magnetic switch 92, the magnetic switch 92 controls the gas opening and closing of the air inlet and outlet control block 6, thereby completing the precise movement of the control mounting head 41 and the laser distance measuring sensor 42. The above is the working principle of the high-precision limit device of the placement machine for printed circuit board processing.

[0040] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A high-precision limit device for a placement machine for printed circuit board processing, comprising a telescopic cylinder main housing (1), characterized in that: Both ends of the telescopic cylinder main housing (1) are connected to an air inlet and outlet connection block (2), and the air inlet and outlet connection block (2) is connected to an air inlet and outlet connection joint (21), a connecting air pipe (211) is connected inside the air inlet and outlet connection joint (21), and an end of the connecting air pipe (211) away from the air inlet and outlet connection joint (21) is connected to an air inlet and outlet control block (6), and one side of the air inlet and outlet control block (6) is connected to an electric actuator (7), and one side of the electric actuator (7) is connected to an electric switch (8); A telescopic rod (3) is arranged inside the telescopic cylinder main housing (1), and one end of the telescopic rod (3) is connected to a patch connector (4), the bottom of the patch connector (4) is connected to a mounting head (41) and a laser distance sensor (42), and one side of the telescopic cylinder main housing (1) is connected to a limit motor (5).

2. A high-precision limiter for a chip mounter for printed circuit board processing according to claim 1, characterized in that: Two groups of air outlet interfaces (62) are provided on one side of the air inlet and outlet control block (6), and the connecting air pipe (211) is plugged into the air outlet interface (62), and a side of the air inlet and outlet control block (6) away from the air outlet interface (62) is connected to a gas tank connecting pipe (61).

3. The high-precision limit device for a chip mounter for printed circuit board processing according to claim 1, characterized in that: A cylinder box (12) and a limit box (13) are arranged in the telescopic cylinder main housing (1), and the telescopic rod (3) is connected in the cylinder box (12), and an induction magnetic ring (31) is sleeved on the outer side of the telescopic rod (3).

4. A high-precision limiter for a chip mounter for printed circuit board processing according to claim 3, characterized in that: A transmission screw (131) is arranged in the limit box (13), a coupling (51) is connected to the limit motor (5), and the transmission screw (131) is connected in the coupling (51).

5. A high-precision limiter for a chip mounter for printed circuit board processing according to claim 4, characterized in that: The transmission screw (131) is connected to a limit device (9), the limit device (9) comprising a transmission connection block (91) and a magnetic switch (92), the transmission connection block (91) being connected to the transmission screw (131), and the magnetic switch (92) being connected to a side of the transmission connection block (91) close to the cylinder box (12).

6. A high-precision limit device for a chip mounter for printed circuit board processing according to claim 5, characterized in that: One side of the magnetic switch (92) is connected to a control connection block (93), and the side of the control connection block (93) away from the magnetic switch (92) is connected to a movement indication block (94), and one end of the movement indication block (94) is connected to a wiring block (941).

7. A high-precision limiter for a chip mounter for printed circuit board processing according to claim 6, characterized in that: The telescopic cylinder main housing (1) is connected to a connecting slide groove (11), the junction block (941) is connected in the connecting slide groove (11), and a control wire (81) is connected between the electric switch (8) and the junction block (941).

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