A chip mounter with positioning structure

Abstract

The utility model relates to the technical field of patch machines, and discloses a patch machine with a positioning structure, including a workbench, a support arm is fixedly installed on the top of the workbench, a cross arm is transmission-connected to the top of the support arm, a hydraulic cylinder is fixedly installed on the outer wall of one end of the top of the cross arm away from the support arm, a patch board is fixedly connected to the output end of the hydraulic cylinder, a positioning seat is fixedly installed on the upper surface of the workbench, and an auxiliary positioning component is arranged inside the positioning seat. The utility model includes a workbench, a support arm is fixedly installed on the top of the workbench, a cross arm is transmission-connected to the top of the support arm, a hydraulic cylinder is fixedly installed on the outer wall of one end of the top of the cross arm away from the support arm, a patch board is fixedly connected to the output end of the hydraulic cylinder, a grabbing plate is arranged on the lower surface of the patch board, a positioning seat is fixedly installed on the upper surface of the workbench, and an auxiliary positioning component is arranged inside the positioning seat.

Description

Technical Field

[0001] The utility model relates to the technical field of chip mounters, in particular to a chip mounter with a positioning structure. Background Art

[0002] SMT patch refers to the abbreviation of a series of process flows based on PCB. When the PCB board is undergoing patch processing, a grabbing robot arm is required to grab the patch and attach it to the PCB board. The patch work needs to ensure a certain degree of accuracy, so a patch machine with a positioning structure is required.

[0003] According to the disclosed isolator placement machine with automatic positioning structure (Announcement No.: CN208175243U), in the above application, a first signal receiver and a No. 1 position sensor are installed on the base, and a second signal receiver and a No. 2 position sensor are installed on the positioning plate of the longitudinal movable plate, and the control is processed by a CNC box, a main motor is installed on the transverse plate, a first driving gear is installed on the main motor, and a first gear plate is installed on the transverse plate through a rotating shaft, so that the CNC box controls the main motor after receiving the signal processing and then controls the rotation of the No. 1 gear plate, thereby preliminarily moving the placement head to the specified position and preliminarily aligning the placement.

[0004] However, in actual use, although the patch structure can be adjusted for alignment through precise sensors, the alignment process lacks continuous and stable guidance as the mechanical equipment moves, which results in poor positioning accuracy of the patch and affects the processing quality of the PCB board. In view of this, we propose a patch machine with a positioning structure. Utility Model Content

[0005] The purpose of the utility model is to provide a chip mounter with a positioning structure to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a patch machine with a positioning structure, comprising a workbench, a support arm is fixedly installed on the top of the workbench, a cross arm is transmission-connected to the top of the support arm, a hydraulic cylinder is fixedly installed on the outer wall of one end of the top of the cross arm away from the support arm, a patch board is fixedly connected to the output end of the hydraulic cylinder, a grabbing plate is arranged on the lower surface of the patch board, a positioning seat is fixedly installed on the upper surface of the workbench, an auxiliary positioning assembly is arranged inside the positioning seat, and the auxiliary positioning assembly comprises:

[0007] A guide rod, a guide rod is fixedly installed on the lower surface of the patch board, a movable cavity is opened on the top inner wall of the positioning seat, a positioning cylinder is movably installed on the inner wall of the movable cavity, a reset spring is fixedly connected between the bottom outer wall of the positioning cylinder and the bottom inner wall of the movable cavity, a guide groove is opened on the bottom arc-shaped inner wall of the movable cavity, and a guide block is fixedly installed on the arc-shaped outer wall of the positioning cylinder;

[0008] An expansion opening is provided on the top inner wall of the positioning cylinder, a rotating ring is rotatably mounted on the inner wall of the positioning cylinder, a square groove is provided on the arc-shaped inner wall of the rotating ring, a contact wheel is rotatably mounted on the inner wall of the square groove, and an arc-shaped groove is provided on the arc-shaped outer wall of the contact wheel.

[0009] Preferably, the patch board is arranged directly above the positioning seat, and an embedding groove matching the size of the PCB board is opened on the upper surface of the positioning seat, and a circular groove is arranged at the end of the embedding groove.

[0010] Preferably, the outer diameter of the positioning cylinder is adapted to the movable cavity, so that the positioning cylinder can eventually be completely received into the interior of the movable cavity to ensure that the patch work on the PCB board in the positioning seat can be achieved after the grabbing plate grabs the patch, and the internal cavity diameter of the positioning cylinder is larger than the outer diameter of the guide rod.

[0011] Preferably, the expansion opening is arranged in a trumpet shape that is narrow at the bottom and wide at the top, so that when the positioning tube contacts the guide rod, even if the guide rod is offset at a certain tilt angle as the patch board is grasped.

[0012] Preferably, the width of the contact wheel is matched with the square groove, and the arc groove is matched with the arc-shaped outer surface of the guide rod, so that the guide rod can finally obtain the fitting positioning effect of the arc groove.

[0013] Preferably, a locking structure is provided on the arc-shaped outer wall of the rotating ring, and the locking structure includes an annular groove. An annular groove is opened on the arc-shaped outer wall of the rotating ring, and a volute spring is sleeved on the inner surface of the annular groove.

[0014] Compared with the prior art, the utility model provides a placement machine with a positioning structure, which has the following beneficial effects:

[0015] 1. The patch machine with a positioning structure is provided with an auxiliary positioning component. When the hydraulic cylinder drives the patch board to move downward and the guide rod is finally inserted into the interior of the positioning cylinder, the guide rod is guided by the expansion opening which is narrow at the bottom and wide at the top in a trumpet shape so that the guide rod finally enters the center of the rotating ring and contacts the outer surface of the contact wheel, and cooperates with the arc groove to better achieve the positioning effect of the guide rod in the positioning cylinder, so that the patch board and the positioning seat are close to each other and cooperate with the grabbing plate to realize the patch work of the PCB board, thereby ensuring the movement correction effect of the patch board and the movement stability of the patch board after correction, thereby ensuring the patch quality of the PCB board.

[0016] 2. The placement machine with a positioning structure is provided with a locking structure. When the guide rod moves downward along the inner wall of the positioning cylinder and finally contacts the outer surface of the contact wheel, the outer surface of the guide rod pushes its arc-shaped outer wall, causing the rotating ring to rotate to a certain extent, and then cooperates with the volute spring to cause the rotating ring to drive the contact wheel to generate a lateral rotational thrust on the guide rod in the positioning cylinder, thereby further ensuring the stability of the guide rod in the positioning cylinder, avoiding the deviation of the patch board during the patch process, and ensuring the processing accuracy of the PCB board. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the support arm, the cross arm and the patch board of the utility model;

[0019] Figure 3 This is a schematic diagram of the cross-sectional structure of the positioning seat of the utility model;

[0020] Figure 4 This is a schematic diagram of the cross-sectional structure of the positioning tube of the utility model;

[0021] Figure 5 It is a schematic diagram of the cross-sectional structure of the rotating ring of the utility model.

[0022] In the figure: 1. workbench; 2. support arm; 3. cross arm; 4. hydraulic cylinder; 5. patch plate; 6. grab plate; 7. positioning seat; 8. auxiliary positioning assembly; 81. guide rod; 82. movable cavity; 83. positioning cylinder; 84. reset spring; 85. guide groove; 86. guide block; 87. expansion mouth; 88. rotating ring; 89. square groove; 810. contact wheel; 811. arc groove; 9. locking structure; 91. annular groove; 92. scroll spring. DETAILED DESCRIPTION

[0023] like Figure 1-Figure 5As shown, the utility model provides a technical solution: a patch machine with a positioning structure, including a workbench 1, a support arm 2 is fixedly installed on the top of the workbench 1, the top of the support arm 2 is transmission-connected with a cross arm 3, a hydraulic cylinder 4 is fixedly installed on the outer wall of the end of the top of the cross arm 3 away from the support arm 2, the output end of the hydraulic cylinder 4 is fixedly connected with a patch board 5, the lower surface of the patch board 5 is provided with a grabbing plate 6, a positioning seat 7 is fixedly installed on the upper surface of the workbench 1, and an auxiliary positioning assembly 8 is arranged inside the positioning seat 7, and the auxiliary positioning assembly 8 includes a guide rod 81, a movable cavity 82, a positioning cylinder 83, a reset spring 84, a guide groove 85, a guide block 86, an expansion opening 87, a rotating ring 88, a square groove 89, a contact wheel 810 and an arc groove 811.

[0024] In one embodiment of the utility model, a guide rod 81 is fixedly installed on the lower surface of the patch board 5, a movable cavity 82 is opened on the top inner wall of the positioning seat 7, a positioning cylinder 83 is movably installed on the inner wall of the movable cavity 82, a reset spring 84 is fixedly connected between the bottom outer wall of the positioning cylinder 83 and the bottom inner wall of the movable cavity 82, a guide groove 85 is opened on the bottom arc-shaped inner wall of the movable cavity 82, a guide block 86 is fixedly installed on the arc-shaped outer wall of the positioning cylinder 83, an expansion opening 87 is opened on the top inner wall of the positioning cylinder 83, a rotating ring 88 is rotatably installed on the inner wall of the positioning cylinder 83, a square groove 89 is opened on the arc-shaped inner wall of the rotating ring 88, a contact wheel 810 is rotatably installed on the inner wall of the square groove 89, and an arc-shaped groove 811 is opened on the arc-shaped outer wall of the contact wheel 810.

[0025] Furthermore, a driving device is provided on the inner wall of the top end of the support arm 2, and the output end of the driving device is fixedly connected to the end of the cross arm 3, so that the staff can control the cross arm 3 to rotate between it and the support arm 2 after starting the equipment, thereby facilitating the rotation of the cross arm 3 to the target position to cooperate with the hydraulic cylinder 4, the patch board 5 and the grabbing plate 6 to grab the patch. At the same time, the patch board 5 is arranged directly above the positioning seat 7, and the upper surface of the positioning seat 7 is provided with an embedding groove that is adapted to the size of the PCB board, and the end of the embedding groove is provided with a circular groove that can be convenient for the workers to pick by hand, thereby facilitating the loading and unloading of the PCB board. In addition, the number of auxiliary positioning components 8 is set to four groups, and the four groups of auxiliary positioning components 8 are evenly distributed in a rectangular array and fixed. Specifically, a small suction cup is provided under the grabbing plate 6 to more stably grasp the patch.

[0026] In addition, the outer diameter of the positioning cylinder 83 is adapted to the active cavity 82, so that the positioning cylinder 83 can be completely received into the active cavity 82, so as to ensure that the PCB board in the positioning seat 7 can be patched after the grab plate 6 grabs the patch. At the same time, the inner cavity diameter of the positioning cylinder 83 is larger than the outer diameter of the guide rod 81, so that the guide rod 81 can be better inserted into the positioning cylinder 83. Specifically, the expansion opening 87 is set in a trumpet shape with a narrow bottom and a wide top, so that when the positioning cylinder 83 contacts the guide rod 81, even if the guide rod 81 As the patch board 5 is grasped and deviated at a certain tilt angle, it can still enter the center of the positioning cylinder 83 through the cooperation between the bottom end surface of the guide rod 81 and the expansion opening 87. Furthermore, the guide block 86 is adapted to the size of the guide groove 85, thereby guiding and restricting the movement of the positioning cylinder 83. Specifically, the positioning cylinder 83 can only move in the vertical direction in the movable cavity 82. At the same time, the reset spring 84 is set, so that the positioning cylinder 83 can maintain the state of extending out of the positioning seat 7 when it is not subjected to the squeezing force from the top.

[0027] Specifically, the inner wall of the positioning cylinder 83 is provided with an annular cavity adapted to the rotating ring 88, so that the rotating ring 88 can rotate in the annular cavity, and the number of annular cavities and rotating rings 88 is set in multiple groups, and the multiple groups of annular cavities and rotating rings 88 are evenly distributed on the inner wall of the positioning cylinder 83 in a linear array, so as to better achieve the positioning effect of the guide rod 81. At the same time, the width of the contact wheel 810 is adapted to the square groove 89, and the arc groove 811 is adapted to the arc-shaped outer surface of the guide rod 81. When the guide rod 81 is inserted When entering into the interior of the positioning cylinder 83, the guide rod 81 moves to the space between the multiple groups of contact wheels 810, and the arc groove 811 is opened on the arc outer wall of the contact wheel 810 to better realize the positioning effect of the guide rod 81 in the positioning cylinder 83, so that the patch board 5 and the positioning seat 7 are close to each other and cooperate with the grabbing plate 6 to realize the patch work of the PCB board, thereby ensuring the movement correction effect of the patch board 5 and the movement stability of the patch board 5 after correction, thereby ensuring the patch quality of the PCB board.

[0028] In the embodiment of the utility model, a locking structure 9 is provided on the arc-shaped outer wall of the rotating ring 88, and the locking structure 9 includes an annular groove 91. An annular groove 91 is provided on the arc-shaped outer wall of the rotating ring 88, and a spiral spring 92 is sleeved on the inner surface of the annular groove 91. Specifically, the two ends of the spiral spring 92 are respectively fixedly connected to the bottom inner wall of the annular groove 91 and the inner wall of the annular cavity, so that when the rotating ring 88 rotates in the annular cavity, due to the elastic force restriction of the spiral spring 92, the rotating ring 88 always has a movement tendency of reverse rotation to achieve reset. As a result, when the guide rod 81 moves downward along the inner wall of the positioning cylinder 83 and finally contacts the outer surface of the contact wheel 810, the outer surface of the guide rod 81 pushes its arc-shaped outer wall, causing the rotating ring 88 to rotate to a certain extent, and then cooperates with the spiral spring 92 to cause the rotating ring 88 to drive the contact wheel 810 to generate a lateral rotational thrust on the guide rod 81 in the positioning cylinder 83, further ensuring the stability of the guide rod 81 in the positioning cylinder 83, avoiding the deviation of the patch board 5 during the patch process, and ensuring the processing accuracy of the PCB board.

[0029] In the utility model, when in use, the staff puts and fixes the PCB board along the embedding groove provided on the positioning seat 7, and at the same time starts the transmission equipment in the cross arm 3, drives the cross arm 3 to rotate to the target position, and drives the patch board 5 and the grabbing plate 6 through the hydraulic cylinder 4 to grab the patch at the target position, and drives it to the top of the positioning seat 7. At this time, the patch board 5 is driven downward by the hydraulic cylinder 4, and finally the guide rod 81 is inserted into the interior of the positioning cylinder 83. Through the guidance of the expansion mouth 87 which is narrow at the bottom and wide at the top and is horn-shaped, the guide rod 81 finally enters the center of the rotating ring 88 and contacts with the outer surface of the contact wheel 810, and cooperates with the arc groove 811 to better realize the positioning effect of the guide rod 81 in the positioning cylinder 83, so that the patch board 5 and the positioning seat 7 are close to each other and cooperate with the grabbing plate 6 to realize the patch work of the PCB board, to ensure the movement amount correction effect of the patch board 5, and at the same time ensure the movement stability of the patch board 5 after correction, thereby ensuring the patch quality of the PCB board.

[0030] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A patch machine with a positioning structure, comprising a workbench (1), a support arm (2) is fixedly mounted on the top of the workbench (1), a cross arm (3) is transmission-connected to the top of the support arm (2), a hydraulic cylinder (4) is fixedly mounted on the outer wall of the top of the cross arm (3) away from the support arm (2), a patch board (5) is fixedly connected to the output end of the hydraulic cylinder (4), a grabbing plate (6) is arranged on the lower surface of the patch board (5), and a positioning seat (7) is fixedly mounted on the upper surface of the workbench (1), characterized in that: An auxiliary positioning component (8) is arranged inside the positioning seat (7), and the auxiliary positioning component (8) comprises: A guide rod (81), the lower surface of the patch board (5) is fixedly mounted with the guide rod (81), the top inner wall of the positioning seat (7) is provided with a movable cavity (82), the inner wall of the movable cavity (82) is movably mounted with a positioning cylinder (83), a reset spring (84) is fixedly connected between the bottom outer wall of the positioning cylinder (83) and the bottom inner wall of the movable cavity (82), a guide groove (85) is provided on the bottom arc-shaped inner wall of the movable cavity (82), and a guide block (86) is fixedly mounted on the arc-shaped outer wall of the positioning cylinder (83); An expansion opening (87) is provided on the top inner wall of the positioning cylinder (83); a rotating ring (88) is rotatably mounted on the inner wall of the positioning cylinder (83); a square groove (89) is provided on the arc-shaped inner wall of the rotating ring (88); a contact wheel (810) is rotatably mounted on the inner wall of the square groove (89); and an arc-shaped groove (811) is provided on the arc-shaped outer wall of the contact wheel (810).

2. A chip mounter with a positioning structure according to claim 1, characterized in that: The patch board (5) is arranged directly above the positioning seat (7), and an embedding groove matching the size of the PCB board is provided on the upper surface of the positioning seat (7), and a circular groove is provided at the end of the embedding groove.

3. The chip mounter with a positioning structure according to claim 1, characterized in that: The outer diameter of the positioning cylinder (83) is matched with the movable cavity (82), and the inner cavity diameter of the positioning cylinder (83) is larger than the outer diameter of the guide rod (81).

4. The chip mounter with a positioning structure according to claim 1, characterized in that: The expansion opening (87) is arranged in a trumpet shape that is narrow at the bottom and wide at the top.

5. The chip mounter with a positioning structure according to claim 1, characterized in that: The width of the contact wheel (810) is matched with the square groove (89), and the arc groove (811) is matched with the arc outer surface of the guide rod (81).

6. The chip mounter with a positioning structure according to claim 1, characterized in that: A locking structure (9) is provided on the arc-shaped outer wall of the rotating ring (88), and the locking structure (9) includes an annular groove (91). An annular groove (91) is provided on the arc-shaped outer wall of the rotating ring (88), and a spiral spring (92) is sleeved on the inner surface of the annular groove (91).

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