Buffer mechanism of chip mounter

Abstract

The utility model discloses a buffer mechanism of a chip mounter, which comprises a processing table used for processing a circuit board and a chip mounting device, the chip mounting device is installed at the top of the processing table through motor driving, and the bottom of the chip mounting device is provided with a suction head used for sucking an electric appliance element. A buffering assembly used for buffering the suction head is arranged outside the chip mounting equipment and comprises an installation pipe and an air bag, the installation pipe is fixedly connected with the bottom of the chip mounting equipment, the air bag is fixedly installed at the top of an inner cavity of the installation pipe, the bottom of the air bag is fixedly connected with the top of the suction head, and the bottom of the suction head extends to the position under the installation pipe. The outer wall of the air bag is fixedly provided with an air outlet pipe and an air inlet pipe communicated with an inner cavity of the air bag. Through mutual cooperation of all parts, flexible connection between the suction head and the PCB and between the suction head and the outside of an electrical component is achieved, deformation of the suction head is avoided, the sealing performance of contact between the suction head and the PCB is guaranteed, a buffering effect is achieved during contact, and breakage during surface mounting of the PCB can be effectively prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to patching machine buffer technical field, concretely is a kind of buffer mechanism of patching machine. BACKGROUND

[0002] Patching machine, also known as "mounting machine" or "surface mounting system", in production line, it is configured after glue dispenser or silk screen printing machine, is through moving mounting head accurately places surface mounting component on PCB pad one kind of equipment.

[0003] The conventional PCB clamping mechanism is rigid contact, when clamping PCB, the material ejecting device directly exerts an upward impact on PCB, which may cause the PCB to arch when clamped, causing the PCB to break, and the suction head used for transferring PCB may deform after long-term use, causing air leakage between the suction head and the PCB, thereby adversely affecting the normal transfer of the PCB, reducing the working efficiency and practicality of the patching machine. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of buffer mechanism of patching machine to solve the problems raised in the above background.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] The buffer mechanism of patching machine includes a processing table for processing circuit board and a patching device, the patching device is driven by a motor and installed on the top of the processing table, and the bottom of the patching device is provided with a suction head for adsorbing electrical components, and the outside of the patching device is provided with a buffer assembly for buffering the suction head.

[0007] The buffer assembly includes a mounting tube and an air bag, the mounting tube is fixedly connected with the bottom of the patching device, the air bag is fixedly installed at the top of the inner cavity of the mounting tube, the bottom of the air bag is fixedly connected with the top of the suction head, the bottom of the suction head extends to the front of the mounting tube, the outer wall of the air bag is fixedly installed with an air outlet pipe and an air inlet pipe communicating with the inner cavity thereof, two mounting holes are formed in the outer wall of the mounting tube, one end of the air outlet pipe and the air inlet pipe away from the air bag penetrates through the mounting hole and extends to the outside of the mounting tube, and the inner cavities of the air inlet pipe and the air outlet pipe are provided with a control assembly for one-way air flow.

[0008] The inner cavity diameter of the air outlet pipe is greater than the inner cavity diameter of the air inlet pipe.

[0009] Preferably, the control assembly comprises a first sealing plate and a first sealing ring, the first sealing ring is fixedly installed in the inner cavity of the air outlet pipe, and the first sealing ring movably installs the first sealing plate at one end away from the air bag, the first sealing plate movably installs a guide column at one end close to the first sealing ring, and the outer wall of the guide column is fixedly sleeved with a top pressing spring connected with the inner wall of the air outlet pipe.

[0010] Preferably, the diameter of the first sealing plate is greater than the inner diameter of the first sealing ring and less than the inner diameter of the air outlet pipe.

[0011] Preferably, the inner cavity of the air inlet pipe is fixedly installed with a second sealing ring, the second sealing ring is provided with a second sealing plate at one end close to the inner cavity of the air bag, the second sealing plate is fixedly installed with a brake column at one end close to the second sealing ring, and the outer wall of the brake column is fixedly installed with a reset spring connected with the inner wall of the air inlet pipe.

[0012] Preferably, the diameter of the second sealing plate is greater than the inner diameter of the second sealing ring and less than the inner diameter of the air inlet pipe.

[0013] Preferably, the inner wall of the mounting pipe is annularly distributed with a sliding groove, the outer wall of the suction head is annularly fixedly installed with a sliding block, the sliding block is inserted into the inner cavity of the sliding groove at one end away from the suction head, and the inner cavity top of the sliding groove is fixedly installed with an extrusion spring connected with the top of the sliding block.

[0014] Compared with the prior art, the utility model has the advantages that:

[0015] When the suction head contacts the PCB board, the suction head moves to the inside of the mounting pipe and presses the air bag to make it deform, at the same time, the air inside the air bag exchanges with the outside air through the air outlet pipe, when the suction head is separated from the PCB board, the outside air enters the inside of the air bag through the air inlet pipe and makes it restore, realizing the soft connection of the suction head with the PCB board and the external electrical components, avoiding the deformation of the suction head, ensuring the sealing property of the contact between the suction head and the PCB board, and playing a buffering role when contacting, which can effectively prevent the rupture of the PCB board when pasting. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a schematic view of the main structure of the utility model;

[0017] Figure 2 It is a sectional view of the mounting pipe and the air bag of the utility model;

[0018] Figure 3 It is a sectional view of the mounting pipe of the utility model;

[0019] Figure 4 It is a sectional view of the mounting pipe and the air bag of the utility model; Figure 2 It is a structure enlarged view of A in the utility model;

[0020] Figure 5The utility model discloses Figure 2 The structure enlarged view of B place in the middle.

[0021] In the figure: 1, processing platform, 2, mounting pipe, 3, suction head, 4, patch equipment, 5, air bag, 6, first sealing ring, 7, first sealing plate, 8, air outlet pipe, 9, guide column, 10, top pressure spring, 11, second sealing ring, 12, air inlet pipe, 13, second sealing plate, 14, extrusion spring, 15, brake column, 16, return spring, 17, sliding block. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model and not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0023] Please refer to Figures 1-5 The utility model provides a kind of buffering mechanism of patching machine, including the processing platform 1 for processing circuit board and patch equipment 4, patch equipment 4 is driven by motor and is installed on the top of processing platform 1, and the bottom of patch equipment 4 is provided with the suction head 3 for adsorbing electrical component, the outside of patch equipment 4 is provided with the buffering assembly for buffering suction head 3, wherein PCB board is placed on the top of processing platform 1, then moves patch equipment 4 while using suction head 3 to suck electrical component and install the sucked electrical component on the outside of PCB board, it is favorable to the production of PCB board.

[0024] Buffering assembly includes mounting pipe 2 and air bag 5, mounting pipe 2 and the bottom of patch equipment 4 are fixedly connected, air bag 5 is fixedly installed in the inner chamber top of mounting pipe 2, the bottom of air bag 5 and the top of suction head 3 are fixedly connected, wherein the bottom of suction head 3 and PCB board contact and when sucking electrical component, it slides to the inside of mounting pipe 2 due to being pressed, at this time, air bag 5 is pressed by suction head 3 and generates deformation.

[0025] The bottom of the suction head 3 extends directly below the mounting pipe 2, the outer wall of the air bag 5 is fixedly provided with an air outlet pipe 8 and an air inlet pipe 12 which are in communication with the inner cavity of the air bag 5, the inner cavities of the air outlet pipe 8 and the air inlet pipe 12 are provided with control components for unidirectional air flow, when the suction head 3 moves to deform the air bag 5, the air inside the air bag 5 is compressed, when the air pressure inside the air bag 5 reaches a certain degree of increase, the control inside the air outlet pipe 8 is opened, the air inside the air bag 5 is quickly exchanged with the outside air through the air outlet pipe 8 to achieve the purpose of pressure relief inside the air bag 5, at the same time, the continuous deformation of the air bag 5 causes the suction head 3 to continuously move towards the inside of the mounting pipe 2, which is beneficial to the soft connection of the suction head 3 with the PCB board and the electrical components, and plays a buffering role when contacting, preventing the PCB board from being broken during pasting, and preventing the bottom of the suction head 3 from deforming to reduce the sealing performance when contacting with the PCB board, reducing the adverse effects on the normal transfer of the PCB board, and improving the working efficiency of the chip mounter.

[0026] Further, when the suction head 3 adsorbs the electrical components, the chip mounter 4 drives the suction head 3 to move towards the PCB board, at this time, the bottom pressing of the suction head 3 disappears, the control component inside the air outlet pipe 8 resets and plays a blocking role on both ends of the air outlet pipe 8, preventing external air from entering the inside of the air bag 5 through the air outlet pipe 8, since the air bag 5 has strong deformation ability, when the air bag 5 resets, the control component inside the air inlet pipe 12 opens and closes, at this time, external air enters the inside of the air bag 5 through the air inlet pipe 12, until the air pressure inside the air bag 5 is the same as the external air pressure after the air bag 5 is completely reset, causing the control component inside the air inlet pipe 12 to reset and block both ends of the air inlet pipe 12.

[0027] The outer wall of the mounting pipe 2 is provided with two mounting holes, one end of the air outlet pipe 8 and the air inlet pipe 12 away from the air bag 5 penetrates through the mounting hole and extends to the outside of the mounting pipe 2, which is beneficial to the exchange of air inside the air bag 5 with external air through the air outlet pipe 8 and the air inlet pipe 12.

[0028] The inner diameter of the air outlet pipe 8 is twice the inner diameter of the air inlet pipe 12, which is beneficial to accelerate the rate of air escaping from the air bag 5 to the outside, while reducing the resetting rate of the air bag 5, playing a buffering role in the resetting of the suction head 3.

[0029] As a preferred embodiment, the control assembly comprises the first sealing plate 7 and the first sealing ring 6, the first sealing ring 6 is fixedly installed in the inner cavity of the air outlet pipe 8, and the first sealing ring 6 movably installs the first sealing plate 7 at one end away from the air bag 5, the first sealing plate 7 is fixedly installed at one end close to the first sealing ring 6, the outer wall of the guide column 9 is fixedly sleeved with the top pressing spring 10 connected with the inner wall of the air outlet pipe 8, the top pressing spring 10 can exert a continuous sliding force on the first sealing plate 7 close to the first sealing ring 6, so that the first sealing plate 7 is always tightly attached to one end of the first sealing ring 6 without external force.

[0030] Further, when the air pressure inside the air bag 5 rises, the air inside the air bag 5 exerts pressure on one end of the first sealing plate 7 close to the guide column 9, and when the air pressure value is greater than the elastic potential energy of the top pressing spring 10, the first sealing plate 7 is separated from the first sealing ring 6, so that the air inside the air bag 5 quickly escapes to the outside.

[0031] The diameter of the first sealing plate 7 is greater than the inner diameter of the first sealing ring 6 and less than the inner diameter of the air outlet pipe 8, which can seal the first sealing ring 6 while ensuring that the air inside the air bag 5 and the outside air can quickly exchange.

[0032] The second sealing ring 11 is fixedly installed in the inner cavity of the air inlet pipe 12, the second sealing ring 11 is provided with the second sealing plate 13 at one end close to the inner cavity of the air bag 5, the second sealing plate 13 is fixedly installed at one end close to the second sealing ring 11, the outer wall of the brake column 15 is fixedly installed with the reset spring 16 connected with the inner wall of the air inlet pipe 12, wherein the reset spring 16 can exert a continuous moving force on the second sealing plate 13 close to the second sealing ring 11, when the air bag 5 deforms, the air inside the air bag 5 flows into the inner cavity of the air inlet pipe 12, and exerts pressure on the outside of the second sealing plate 13, until the second sealing plate 13 can be more tightly attached to the second sealing plate 13, when the air bag 5 and the outside air are deformed and reset, due to the tension of the air bag 5 and the action of the outside air pressure, the second sealing plate 13 is separated from the second sealing ring 11, at this time, the outside air enters the inside of the air bag 5 through the air inlet pipe 12, when the air pressure inside the air bag 5 is equal to the outside air pressure, the reset spring 16 resets together with the second sealing plate 13, and again separates the two ends of the air inlet pipe 12.

[0033] The diameter of the second sealing plate 13 is greater than the inner diameter of the second sealing ring 11 and less than the inner diameter of the air inlet pipe 12, which can seal the second sealing ring 11 while ensuring that the outside air enters the inside of the air bag 5 through the air inlet pipe 12.

[0034] The inner wall of the mounting pipe 2 is provided with sliding grooves in annular distribution, the outer wall of the suction head 3 is fixedly provided with sliding blocks 17 in annular distribution, the end of the sliding blocks 17 away from the suction head 3 is inserted into the inner cavity of the sliding grooves, the inner cavity top of the sliding grooves is fixedly provided with extrusion springs 14 connected with the top of the sliding blocks 17, wherein when the suction head 3 moves to the inside of the mounting pipe 2, the extrusion springs 14 are compressed, when the external pressing force of the suction head 3 disappears, the extrusion springs 14 reset and let the sliding blocks 17 move downward, thereby stretching the bottom of the air bag 5, which is beneficial to accelerate the reset of the deformed air bag 5.

[0035] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A buffer mechanism for a chip mounter, characterized by: The utility model provides a kind of patch equipment (4) and processing table (1) for processing circuit board, the patch equipment (4) is driven by motor and is installed on the top of processing table (1), and the bottom of patch equipment (4) is provided with suction head (3) for adsorbing electrical components, the outside of patch equipment (4) is provided with buffering assembly for buffering suction head (3). The buffering assembly includes a mounting tube (2) and an air bag (5), the mounting tube (2) is fixedly connected with the bottom of the patch equipment (4), the air bag (5) is fixedly installed at the top of the inner cavity of the mounting tube (2), the bottom of the air bag (5) is fixedly connected with the top of the suction head (3), the bottom of the suction head (3) extends directly below the mounting tube (2), the outer wall of the air bag (5) is fixedly installed with an air outlet pipe (8) and an air inlet pipe (12) which are in communication with the inner cavity of the air bag (5), two mounting holes are formed in the outer wall of the mounting tube (2), the ends of the air outlet pipe (8) and the air inlet pipe (12) which are away from the air bag (5) penetrate through the mounting holes and extend to the outside of the mounting tube (2), and the inner cavities of the air inlet pipe (12) and the air outlet pipe (8) are provided with control assemblies for one-way air flow. The inner diameter of the air outlet pipe (8) is larger than the inner diameter of the air inlet pipe (12).

2. The buffer mechanism of a patch machine according to claim 1, characterized in that: The control assembly includes a first sealing plate (7) and a first sealing ring (6), the first sealing ring (6) is fixedly installed in the inner cavity of the air outlet pipe (8), and the end of the first sealing ring (6) which is away from the air bag (5) is movably installed with the first sealing plate (7), the end of the first sealing plate (7) which is close to the first sealing ring (6) is fixedly installed with a guide column (9), and the outer wall of the guide column (9) is fixedly sleeved with a top pressing spring (10) which is connected with the inner wall of the air outlet pipe (8).

3. The buffer mechanism of a patch machine according to claim 2, characterized in that: The diameter of the first sealing plate (7) is larger than the inner diameter of the first sealing ring (6) and smaller than the inner diameter of the air outlet pipe (8).

4. The buffer mechanism of a patch machine according to claim 1, wherein: The inner cavity of the air inlet pipe (12) is fixedly installed with a second sealing ring (11), the end of the second sealing ring (11) which is close to the inner cavity of the air bag (5) is provided with a second sealing plate (13), the end of the second sealing plate (13) which is close to the second sealing ring (11) is fixedly installed with a brake column (15), and the outer wall of the brake column (15) is fixedly installed with a reset spring (16) which is connected with the inner wall of the air inlet pipe (12).

5. The buffer mechanism of a patching machine according to claim 4, characterized in that: The diameter of the second sealing plate (13) is larger than the inner diameter of the second sealing ring (11) and smaller than the inner diameter of the air inlet pipe (12).

6. The buffer mechanism of a patching machine according to claim 1, characterized in that: The inner wall of the mounting tube (2) is annularly distributed with sliding grooves, the outer wall of the suction head (3) is fixedly installed with sliding blocks (17) which are annularly distributed, the ends of the sliding blocks (17) which are away from the suction head (3) are inserted into the inner cavities of the sliding grooves, and the inner cavity top of the sliding groove is fixedly installed with an extrusion spring (14) which is connected with the top of the sliding block (17).

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