High-precision chip mounter for SMT workshop

Abstract

The utility model provides a high-precision chip mounter for an SMT workshop, which comprises a machine body, a transmission belt arranged in the machine body, a driving assembly arranged in the machine body, a mounting assembly capable of being driven by the driving assembly arranged in the machine body, a pressing sheet arranged above the transmission belt, and a plurality of driving cylinders arranged in the machine body. The output end of the driving cylinder is fixedly connected with a supporting plate, and a plurality of adsorption heads are arranged on the supporting plate. The PCB fixing device has the advantages that after a PCB is driven to the position above the supporting plate by the transmission belt, the driving cylinder is started to drive the supporting plate to move upwards, the exhaust assembly is started, the PCB is adsorbed by the adsorption head, and then the PCB is fixed. The supporting rod on the supporting plate elastically supports the PCB under the cooperation of the spring, and locks the PCB under the cooperation of the adsorption head. The pressing sheet also restrains the PCB from the top. And the driving assembly drives the mounting assembly to mount the patch on the PCB. And the PCB is stably supported, so that the PCB can be prevented from being bent during surface mounting work, and the surface mounting work is more accurate.

Description

Technical Field

[0001] This utility model relates to the field of pick and place machine technology, and in particular to a high-precision pick and place machine for SMT workshops. Background Technology

[0002] SMT, or Surface Mount Technology, is a circuit mounting technology that directly mounts leadless or short-lead components onto the copper foil surface of a printed circuit board (PCB). SMT technology is widely used in the manufacturing of various electronic products, including communication equipment, computers, consumer electronics, automotive electronics, and industrial control.

[0003] Pick-and-place machines accurately place various surface mount components (SMT) onto the corresponding positions on the surface of a printed circuit board (PCB) by moving the placement head. This significantly improves the speed and accuracy of electronic component placement. In existing technologies, a conveyor belt typically carries the PCB into the placement machine during placement. However, during placement, the PCB is relatively suspended, and when the placement head contacts the PCB with the component, the PCB may bend or even shift, affecting the accuracy of the placement position. Therefore, this paper proposes an improved high-precision pick-and-place machine for SMT workshops. Utility Model Content

[0004] The purpose of this invention is to at least solve one of the aforementioned technical defects.

[0005] Therefore, one objective of this utility model is to provide a high-precision placement machine for SMT workshops to solve the problems mentioned in the background art and overcome the shortcomings of the existing technology.

[0006] To achieve the above objectives, one embodiment of this utility model provides a high-precision placement machine for SMT workshops, including a machine body, a transmission belt disposed within the machine body, a drive assembly disposed within the machine body, a placement assembly disposed within the machine body that can be driven by the drive assembly, a pressure plate disposed above the transmission belt, a plurality of drive cylinders disposed within the machine body, a support plate fixedly connected to the output end of each drive cylinder, a plurality of suction heads disposed on the support plate, and an exhaust assembly disposed at the bottom end of each suction head; a plurality of through holes are formed on the support plate, a support rod is inserted into each through hole, and a spring is disposed between the support rod and the support plate.

[0007] Preferably, in any of the above embodiments, the side of the machine body has a hole through which the transmission belt is connected to an external transmission component.

[0008] The above technical solution provides a mounting platform and space for the drive belt, drive components, and mounting components, as well as space for the mounting process. Holes are opened on the side of the machine body to facilitate the connection between the drive belt and external drive components, and also to facilitate the transport of the PCB from the outside into the machine body.

[0009] Preferably, as described in any of the above embodiments, the machine body is provided with an opening and closing cover, the opening and closing cover is provided with an observation window, and the drive assembly includes X-axis, Y-axis and Z-axis drive assemblies.

[0010] The above technical solution employs a transmission belt to move the PCB, positioning it below the placement assembly. The drive assembly then moves the placement assembly, enabling it to pick up and place the component onto the PCB. A hinged cover is provided on the machine body for easy access to the components. An observation window is provided on the cover to allow operators to observe the machine's operation from the outside.

[0011] Preferably, as described in any of the above schemes, there are several pressure plates evenly arranged above the transmission belt, and a buffer pad is provided on the bottom surface of the pressure plate.

[0012] The above technical solution involves installing pressure plates on the transmission belt. These pressure plates constrain the PCB from above, preventing it from moving upwards. The evenly distributed pressure plates constrain the PCB from multiple points, resulting in a more stable constraint effect. A buffer pad is placed on the bottom surface of the pressure plates to reduce wear between the pressure plates and the PCB.

[0013] Preferably, of any of the above embodiments, there are four drive cylinders respectively located at the four corners of the tray, and several adsorption heads are evenly arranged around the tray, with an adsorption head also located at the center of the tray.

[0014] The above technical solution employs a drive cylinder to vertically displace the pallet. Multiple drive cylinders are positioned at the four corners of the pallet, providing stable support. The pallet serves as a mounting platform for the suction head and support rod. The suction head, in conjunction with the exhaust assembly, adsorbs the PCB, thus securing it to the pallet.

[0015] Preferably, in any of the above embodiments, the exhaust assembly includes a miniature air pump and an exhaust pipe, and several of the adsorption heads share the same exhaust pipe.

[0016] The above technical solution works as follows: After the PCB is moved above the pallet by the conveyor belt, the drive cylinder is activated, causing the pallet to move upward. The exhaust assembly is then activated, causing the adsorption head to adsorb the PCB, thus fixing the PCB in place. Several adsorption heads share the same exhaust pipe, facilitating simultaneous adsorption operations by multiple adsorption heads.

[0017] Preferably, in any of the above embodiments, an end plate is fixedly connected to the bottom end of the support rod, and the spring is sleeved on the outside of the support rod.

[0018] The above technical solution employs a support rod to support the PCB, with a spring and support plate providing elastic support for the support rod, allowing it to adaptively adjust according to the specific structure of the PCB. The spring is sleeved on the outside of the support rod to prevent it from bending.

[0019] Compared with the prior art, the advantages and beneficial effects of this utility model are as follows:

[0020] 1. This SMT workshop uses a high-precision pick-and-place machine. Through the design of components such as a pressure plate, drive cylinder, tray, suction head, through-holes, support rods, and springs, the PCB is moved above the tray by a conveyor belt. The drive cylinder then activates, lifting the tray and activating the exhaust assembly, causing the suction head to pick up the PCB and secure it. The support rods on the tray, with the help of springs, provide elastic support to the PCB, and the suction head further locks the PCB in place. The pressure plate also constrains the PCB from above. The drive assembly drives the placement assembly to mount the component onto the PCB. The stable support of the PCB prevents bending and movement during placement, resulting in more precise placement.

[0021] 2. This SMT workshop uses a high-precision pick-and-place machine. Holes are cut into the side of the machine body to facilitate the connection between the conveyor belt and external transmission components, and also to facilitate the transport of PCBs from the outside into the machine body. A hinged cover is installed on the machine body for easy operation of the components inside. An observation window is provided on the hinged cover for easy observation of the machine's operation from the outside. Several pressure plates are evenly arranged to constrain the PCB from multiple points, resulting in a more stable constraint effect. A buffer pad is placed on the bottom of the pressure plates to reduce wear between the pressure plates and the PCB.

[0022] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0023] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0024] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0025] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0026] Figure 3 For the present utility model Figure 2 Schematic diagram of the structure at point A;

[0027] Figure 4 This is a schematic diagram of the structure of the tray of this utility model.

[0028] In the diagram: 1-body, 2-transmission belt, 3-drive assembly, 4-mounting assembly, 5-pressing plate, 6-drive cylinder, 7-support plate, 8-adsorption head, 9-exhaust assembly, 10-through hole, 11-support rod, 12-spring. Detailed Implementation

[0029] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0030] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] like Figures 1-4 As shown, this utility model includes a body 1, a transmission belt 2 inside the body 1, a drive assembly 3 inside the body 1, a mounting assembly 4 that can be driven by the drive assembly 3 inside the body 1, a pressure plate 5 above the transmission belt 2, a plurality of drive cylinders 6 inside the body 1, a support plate 7 fixedly connected to the output end of the drive cylinder 6, a plurality of suction heads 8 on the support plate 7, and an exhaust assembly 9 at the bottom end of the suction head 8; a plurality of through holes 10 are opened on the support plate 7, a support rod 11 is inserted into the through holes 10, and a spring 12 is provided between the support rod 11 and the support plate 7.

[0032] Example 1: The side of the machine body 1 has a hole through which the transmission belt 2 is connected to the external transmission assembly. The machine body 1 provides an installation platform and space for the transmission belt 2, drive assembly 3, and mounting assembly 4, and also provides space for mounting work. The hole on the side of the machine body 1 provides the conditions for the connection between the transmission belt 2 and the external transmission assembly, and also facilitates the transport of the PCB from the outside into the machine body 1.

[0033] The machine body 1 is equipped with a hinged cover with an observation window. The drive assembly 3 includes X-axis, Y-axis, and Z-axis drive components. A transmission belt 2 moves the PCB to a position below the mounting assembly 4. The drive assembly 3 then moves the mounting assembly 4, enabling it to pick up and mount the components onto the PCB. The hinged cover on the machine body 1 facilitates operator access to the components within. The observation window on the cover allows operators to observe the operation of the machine body 1 from the outside.

[0034] Example 2: Several pressure plates 5 are evenly arranged above the transmission belt 2, and a buffer pad is provided on the bottom surface of the pressure plates 5. The pressure plates 5 are positioned on the transmission belt 2, allowing them to constrain the PCB from above and prevent the PCB from moving upwards. The even arrangement of several pressure plates 5 ensures that the PCB is constrained from multiple points, resulting in a more stable constraint effect. The buffer pad on the bottom surface of the pressure plates 5 reduces wear between the pressure plates 5 and the PCB.

[0035] Four drive cylinders 6 are positioned at the four corners of the tray 7, and several suction heads 8 are evenly distributed around the tray 7, with one suction head 8 also located at the center of the tray 7. The drive cylinders 6 are used to drive the tray 7 to move vertically, and the multiple drive cylinders 6 positioned at the four corners of the tray 7 provide stable support for the tray 7. The tray 7 provides a mounting platform for the suction heads 8 and the support rods 11. The suction heads 8, in conjunction with the exhaust assembly 9, adsorb the PCB, thus fixing the PCB onto the tray 7.

[0036] Example 3: The exhaust assembly 9 includes a miniature air pump and an exhaust pipe, with several adsorption heads 8 sharing the same exhaust pipe. After the PCB is driven by the transmission belt 2 to the top of the support plate 7, the drive cylinder 6 is activated, causing the support plate 7 to move upward. The exhaust assembly 9 is then activated, allowing the adsorption heads 8 to adsorb the PCB, thereby fixing the PCB in place. The shared exhaust pipe among the adsorption heads 8 facilitates simultaneous adsorption operations by multiple adsorption heads 8.

[0037] An end plate is fixedly connected to the bottom end of the support rod 11, and a spring 12 is sleeved on the outside of the support rod 11. The support rod 11 is used to support the PCB, and the spring 12, together with the support plate 7, provides elastic support for the support rod 11, allowing it to adaptively adjust according to the specific structure of the PCB. The spring 12 is sleeved on the outside of the support rod 11 to prevent the spring 12 from bending.

[0038] The working principle of this utility model is as follows:

[0039] S1. After the PCB is driven by the transmission belt 2 to the top of the tray 7, the drive cylinder 6 starts to drive the tray 7 to move upward, the exhaust assembly 9 starts, so that the adsorption head 8 adsorbs the PCB, thereby fixing the PCB.

[0040] S2, the support rod 11 on the tray 7 provides elastic support to the PCB with the help of the spring 12, and locks the PCB with the help of the suction head 8. The pressure plate 5 also constrains the PCB from the top;

[0041] S3, the drive component 3 drives the mounting component 4 to mount the chip onto the PCB.

[0042] Compared with the prior art, the present invention has the following advantages:

[0043] 1. This SMT workshop uses a high-precision pick-and-place machine. Through the installation of a pressure plate 5, drive cylinder 6, tray 7, suction head 8, through-hole 10, support rod 11, and spring 12, the machine operates as follows: After the PCB is moved above the tray 7 by the conveyor belt 2, the drive cylinder 6 activates, moving the tray 7 upwards. The exhaust assembly 9 then activates, causing the suction head 8 to pick up the PCB, thus securing it. The support rod 11 on the tray 7, in conjunction with the spring 12, provides elastic support to the PCB, and the suction head 8 further locks the PCB in place. The pressure plate 5 also constrains the PCB from the top. The drive assembly 3 drives the placement assembly 4 to place the component onto the PCB. The stable support of the PCB prevents bending and movement during placement, resulting in more precise placement.

[0044] 2. This SMT workshop uses a high-precision pick-and-place machine. Holes are opened on the side of the machine body 1 to facilitate the connection of the conveyor belt 2 to external transmission components, and also to facilitate the transport of PCBs from the outside into the machine body 1. A hinged cover is provided on the machine body 1 to facilitate operation of the components inside. An observation window is provided on the hinged cover to allow operators to observe the working conditions inside the machine body 1 from the outside. Several pressure plates 5 are evenly arranged to constrain the PCB from multiple points, making the constraint effect more stable. A buffer pad is placed on the bottom surface of the pressure plates 5 to reduce wear between the pressure plates 5 and the PCB.

Claims

1. A high-precision placement machine for an SMT workshop, comprising a body (1), a transmission belt (2) disposed within the body (1), a drive assembly (3) disposed within the body (1), and a placement assembly (4) disposed within the body (1) and capable of being driven by the drive assembly (3); characterized in that, A pressure plate (5) is provided above the transmission belt (2), and a number of drive cylinders (6) are provided inside the machine body (1). A support plate (7) is fixedly connected to the output end of the drive cylinder (6). A number of suction heads (8) are provided on the support plate (7), and an exhaust assembly (9) is provided at the bottom end of the suction head (8). The tray (7) has several through holes (10), and a support rod (11) is inserted into the through hole (10). A spring (12) is provided between the support rod (11) and the tray (7).

2. The high-precision placement machine for SMT workshops as described in claim 1, characterized in that: The side of the body (1) has a hole and the transmission belt (2) is connected to the external transmission assembly through the hole.

3. The high-precision placement machine for SMT workshops as described in claim 2, characterized in that: The body (1) is provided with an opening and closing cover, and the opening and closing cover is provided with an observation window. The drive assembly (3) includes X-axis, Y-axis and Z-axis drive assemblies.

4. A high-precision placement machine for SMT workshops as described in claim 3, characterized in that: There are several pressure plates (5) and they are evenly arranged above the transmission belt (2). The bottom surface of the pressure plates (5) is provided with a buffer pad.

5. A high-precision placement machine for SMT workshops as described in claim 4, characterized in that: There are four drive cylinders (6) respectively located at the four corners of the tray (7), and several adsorption heads (8) are evenly arranged around the tray (7). An adsorption head (8) is also provided at the center of the tray (7).

6. A high-precision placement machine for SMT workshops as described in claim 5, characterized in that: The exhaust assembly (9) includes a micro air pump and an exhaust pipe, and several of the adsorption heads (8) share the same exhaust pipe.

7. A high-precision placement machine for SMT workshops as described in claim 6, characterized in that: The bottom end of the support rod (11) is fixedly connected to an end plate, and the spring (12) is sleeved on the outside of the support rod (11).

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