A moving mechanism of a high-speed placement machine

Abstract

The present invention relates to a moving mechanism of a high-speed chip placement machine. The moving mechanism includes an X-axis linear motor, a translation plate and at least two Y-axis linear motors, the X-axis linear motor is fixed on the translation plate, the stators of the two Y-axis linear motors are round rods with strong magnetism and are parallel to each other, the Y-axis linear motor is used to drive the translation plate and the X-axis linear motor to reciprocate linearly, and the movers of the two Y-axis linear motors are respectively fixedly connected to the translation plate. The present invention provides greater thrust by using two Y-axis linear motors to work in parallel and synchronously, and can use longer round rods as stators, and the stroke can be lengthened, so that the chip processing area is increased. At the same time, due to the greater thrust, the acceleration is improved, which can ensure high speed and high efficiency to meet the needs of production and processing.

Description

Technical Field

[0001] The present invention relates to a chip mounter, and particularly to a moving mechanism of a high-speed chip mounter. Background Art

[0002] A chip mounter, also known as a "chip placer" or "surface mount system", is configured after a dispensing machine or a screen printer in a production line. It is a device that accurately places surface mount components on PCB pads by moving a placement head. In the prior art, the X-axis and Y-axis translations of a high-speed chip mounter are usually achieved by individual linear motors respectively. The stator of the linear motor used in the chip mounter is a strong magnetic round bar, and the length of the round bar is generally relatively short, so that high-speed and high-precision chip placement can be achieved without a large acceleration. However, the disadvantage is that large-area chip placement cannot be performed and the efficiency cannot be improved, which needs to be improved. Summary of the Invention

[0003] The purpose of the present invention is to overcome the defects of the prior art and provide a moving mechanism of a high-speed chip mounter, which can provide a translational motion with a larger stroke, improve the chip placement area and ensure high speed at the same time.

[0004] To achieve the above purpose, the present invention adopts the following technical solutions: A moving mechanism of a high-speed chip mounter includes an X-axis linear motor, a translation plate and at least two Y-axis linear motors. The X-axis linear motor is fixed on the translation plate. The stators of the two Y-axis linear motors are strong magnetic round bars and are parallel to each other. The Y-axis linear motors are used to drive the translation plate and the X-axis linear motor to perform linear reciprocating motion. The rotors of the two Y-axis linear motors are respectively fixedly connected to the translation plate.

[0005] The rotors of the two Y-axis linear motors are respectively fixedly connected to the upper and lower surfaces at one end of the translation plate.

[0006] The rotor of the Y-axis linear motor is fixed in a long strip-shaped heat dissipation cover with a C-shaped cross-section. The middle of the heat dissipation cover is hollowed out to form a groove, and the rotor of the Y-axis linear motor is fixed in the groove of the heat dissipation cover.

[0007] The heat dissipation cover includes a first side cover, a second side cover and a middle section. The first side cover and the second side cover are both C-shaped and are respectively fixedly attached to both sides in the length direction of the middle section. The cross-sectional shapes and sizes of the first side cover, the second side cover and the middle section are the same.

[0008] The middle section is penetrated by a number of pipes for fluid flow extending along the length direction of the middle section, and the openings at both ends of each pipe are located on both sides of the length direction of the middle section, and the side cover 1 and the side cover 2 are respectively provided with a number of inner flow channels, which are used to connect two adjacent pipes in the middle section and make all pipes pass through to form a single channel for fluid flow, and the single-side opening of each pipe is connected with at most one inner flow channel, and the other side openings of two adjacent pipes connected by any inner flow channel of the side cover 1 are not connected with the same inner flow channel on the side cover 2. Straight-through ports are respectively provided in the side cover 1 and the side cover 2, which are connected with the pipe openings and serve as fluid inlet or outlet.

[0009] The moving mechanism of the high-speed placement machine also includes a side bracket, the translation plate is slidably connected to the side bracket, and the stator of the Y-axis linear motor is fixed in the side bracket. The side bracket includes a base, an upper cover plate, a side cover and two end brackets, and the base, the upper cover plate, the side cover and the two end brackets are all made of ferromagnetic metal; the two ends of the stator of the Y-axis linear motor are respectively fixed to an end bracket, and the two end brackets are fixed on both sides of the length direction of the base, and the two ends of the upper cover plate are respectively fixed to the top of the end bracket; in the direction perpendicular to the length of the base, the side cover fixes one side of the base and is fixedly connected to the upper cover plate and the end bracket, and the other side of the base is used for sliding connection with the translation plate.

[0010] An upright side panel is provided on one side of the top surface of the base. The side panel is integrated with the base. The side panel and the top surface of the base form an L-shaped long groove. The stator height of the Y-axis linear motor below is not higher than the height of the side panel, and the stator height of the Y-axis linear motor above is higher than the height of the side panel.

[0011] Three holes are arranged on the side cover at positions corresponding to the stator of the upper Y-axis linear motor, and the lowest height of the holes is higher than the stator height of the lower Y-axis linear motor.

[0012] A long strip hole is dug out in the middle of the top surface of the base corresponding to the position of the stator of the Y-axis linear motor.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: by adopting two Y-axis linear motors working in parallel and synchronously to provide greater thrust, a longer round rod can be used as a stator, the stroke can be lengthened, and thus the patch processing area is increased; at the same time, due to the greater thrust, the acceleration is improved, which can ensure high speed and high efficiency to meet the needs of production and processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The present invention is a stereoscopic diagram of the mobile mechanism assembly of the high-speed placement machine.

[0015] Figure 2 The figure is an exploded view of the side bracket of the moving mechanism of the high-speed placement machine of the present invention.

[0016] Figure 3 This is an exploded view of the heat sink and mover of the moving mechanism of the high-speed mounter of the present invention.

[0017] Figure 4 This is an exploded view of the heat sink of the moving mechanism of the high-speed mounter of the present invention (the first side cover and the second side cover are sectioned respectively).

[0018] Figure 5 This is a partial exploded view of the heat sink of the moving mechanism of the high-speed mounter of the present invention.

[0019] It should be noted that the products shown in the above views are appropriately reduced / enlarged to adapt to the drawing size and view clarity, and the size of the products shown in the views is not limited. Detailed Embodiment

[0020] To more fully understand the technical content of the present invention, the technical solution of the present invention will be further introduced and described below in conjunction with specific embodiments.

[0021] This embodiment is the moving mechanism of the mounter. This moving mechanism includes an X-axis linear motor 14, a translation plate 11, two Y-axis linear motors 20, and a side bracket 40. The entire moving mechanism is installed on a machine table (not shown).

[0022] As Figure 1 shown, the X-axis linear motor 14 is fixed on the translation plate 11. During implementation, a chip mounting mechanism (not shown in Figure 1 the figure) should also be installed on the mover of the X-axis linear motor 14. Sliders 12 and 13 are respectively fixed at both ends of the translation plate 11. The slider 12 at one end of the translation plate 11 is slidably connected to the slide rail 15 on the top surface of the vertical plate 16, and the slider 13 at the other end is slidably connected to the slide rail 17 on the side bracket 40. The slide rail 15 and the slide rail 17 are parallel to each other and have the same length.

[0023] As Figure 1 shown, the stators 21 of the two Y-axis linear motors 20 are strong magnetic round bars and are parallel to each other. In this embodiment, the Y-axis linear motor 20 is used to drive the translation plate 11 and the X-axis linear motor 14 thereon to perform linear reciprocating motion along the slide rails 15 and 17. The movers 22 of the two Y-axis linear motors 20 are respectively fixedly connected to the upper and lower surfaces of one end of the translation plate 11 where the slider 13 is located. Specifically, the movers 22 of the two Y-axis linear motors 20 are respectively fixed in a long strip-shaped heat sink 30 with a U-shaped cross-section, and the heat sink 30 is directly fixed in the upper and lower surfaces of one end of the translation plate 11 respectively.

[0024] As Figure 1As shown, the side bracket 40 is arranged on the opposite side of the vertical plate 16, and the two Y-axis linear motors 20 are both arranged in the side bracket 40. The side bracket 40 includes a base 41, an upper cover plate 44, a side cover 43 and two end brackets 42, and the base 41, the upper cover plate 44, the side cover 43 and the two end brackets 42 are all made of ferromagnetic metal. The side bracket 40 not only plays a supporting role, but also generates a magnetic attraction force on the stators 21 (strong magnetic round rods) of the two Y-axis linear motors 20 through the base 41, the upper cover plate 44 and the side cover 43. The stators 21 of the two Y-axis linear motors 20 are not far from each other, and the magnetic attraction force generated is very strong, which will cause the stator 21 to be slightly bent and deformed. Moreover, when the length of the stator 21 is relatively large, the gravity will also have an adverse effect on the straightness of the stator 21. The base 41 , the upper cover 44 , and the side cover 43 in the side bracket 40 can offset the magnetic attraction between the stators 21 and reduce the influence of gravity on the stator 21 through magnetic attraction, so that the stator 21 can be closer to a horizontal straight line.

[0025] like Figure 2 As shown, the two ends of the stator 21 of the Y-axis linear motor 20 are respectively fixed on the end brackets 42 on both sides. Each end bracket 42 is divided into two halves, and is respectively provided with a semicircular groove 421. The two semicircular grooves 421 are combined and fixed together to clamp the end of the stator 21. The two end brackets 42 are respectively fixed on both sides of the length direction of the base 41, and the two ends of the upper cover plate 44 are respectively fixedly connected to the top of the end bracket 42. The upper cover plate 44 is located directly above the stator 21 of the upper Y-axis linear motor 20, and is used to generate a magnetic attraction to the stator 21 of the upper Y-axis linear motor 20, while the magnetic attraction generated on the stator of the lower Y-axis linear motor 20 is smaller.

[0026] like Figure 2 As shown, a vertical side plate 411 is provided on one side of the top surface 412 of the base 41, and the side plate 411 is integrated with the base 41. A slide rail 17 is provided on the top surface of the side plate 411, which can be slidably connected with the translation plate 11. The side plate 411 and the top surface of the base 41 form a long strip groove with an L-shaped cross-section, and the stator 21 of the Y-axis linear motor 20 below is just located therein. In this embodiment, the height of the stator 21 of the Y-axis linear motor 20 below is not higher than the height of the side plate 411, and the lowest height of the stator 21 of the Y-axis linear motor 20 above is higher than the height of the side plate 411.

[0027] like Figure 2As shown, in this embodiment, a long strip hole 413 is dug in the middle of the top surface 412 of the base 41 corresponding to the position of the stator 21 of the lower Y-axis linear motor 20. The stator 21 of the lower Y-axis linear motor 20 is subject to a relatively large gravitational force, and the magnetic attraction force of the top surface 412 of the base 41 on the stator 21 of the lower Y-axis linear motor 20 is also downward. Digging the long strip hole 413 reduces the magnetic attraction force of the top surface 412 of the base 41 on the stator 21 of the lower Y-axis linear motor 20, avoiding the situation of excessive force on the lower part.

[0028] As Figure 2 shown, in the direction perpendicular to the length of the base 41, one side of the base 41 is a side plate 411, which can be slidably connected to the translation plate 11, and the other side of the base 41 is fixedly connected to the side cover 43, and the side cover 43 is also fixedly connected to the upper cover plate 44 and the end bracket 42 at the same time. Three digging holes 431 are provided at the position of the side cover 43 corresponding to the stator 21 of the upper Y-axis linear motor 20, and the lowest height of the digging holes 431 is higher than the height of the stator 21 of the lower Y-axis linear motor 20. Because the stator 21 of the upper Y-axis linear motor 20 is higher than the height of the side plate 411, one side of the stator 21 of the upper Y-axis linear motor 20 is not subject to a relatively large magnetic attraction force. Therefore, the main function of the digging holes 431 is to reduce the magnetic attraction force of the side cover 43 on the stator 21 of the upper Y-axis linear motor 20, avoiding the stator 21 bending towards the side cover 43. One side of the stator 21 of the lower Y-axis linear motor 20 is subject to the magnetic attraction force of the side plate 411, and the other side is subject to the magnetic attraction force of the side cover 43. The two sides of the stator 21 of the lower Y-axis linear motor 20 are in force balance and will not bend laterally.

[0029] As Figure 3 shown, the middle of the heat dissipation cover 30 is hollowed out to form a groove 332, and the mover 22 of the Y-axis linear motor is fixed in the groove 332 of the heat dissipation cover 30. As Figure 3 shown, the heat dissipation cover 30 includes a first side cover 31, a second side cover 32 and a middle section 33. The first side cover 31 and the second side cover 32 are both in a C shape and are respectively fixedly attached to both sides of the middle section 33 in the length direction, and the cross-sectional shapes and sizes of the first side cover 31, the second side cover 32 and the middle section 33 are the same. Hollow transition pipes 34, 35 are respectively clamped between the first side cover 31, the second side cover 32 and the middle section 33. The transition pipes 34, 35 are used for the fluid to flow in from one side and flow out from the other side.

[0030] As Figure 3 shown, a number of pipes 331 for fluid flow extending along the length direction of the middle section 33 penetrate through the middle section 33. The fluid can be either a liquid or a gas. In this embodiment, there are 9 pipes 331, 3 in the upper, middle and lower parts respectively. The two ends of each pipe 331 are respectively located on both sides of the middle section 33 in the length direction.

[0031] As Figure 4As shown, the inner flow channels 311, 312, 313, 314 are provided inside the side cover 1 31; the inner flow channels 321, 322, 323, 324 are provided inside the side cover 2 32. These inner flow channels are used to connect two adjacent pipes 331 in the middle section 33 and make all pipes 331 pass through to form a single channel for fluid flow, and the single-side opening of each pipe 331 is connected to at most one of the inner flow channels, and the other-side opening of two adjacent pipes 331 connected by one of the inner flow channels 311, 312, 313, 314 of the side cover 1 31 will not be connected to the same inner flow channel (321, 322, 323 or 324) on the side cover 2 32 at the same time. The fluid flows out of the pipe 331, flows into the adjacent pipe 331 through the internal flow channel (in the side cover 1 31 or the side cover 2 32), and then flows into the next adjacent pipe 331 through the internal flow channel on the other side. All the pipes 331 are connected in this way to form a channel for fluid flow, so that the fluid flows through each pipe 331 and can smoothly take away the heat. Of course, through ports 315 and 325 need to be provided in the side cover 1 31 and the side cover 2 32 respectively. The through ports 315 and 325 are connected to the opening of the pipe 331 and can be used as the fluid inlet or outlet. For example, Figure 4 , the straight-through port 325 at the upper position of the second side cover 32 is used as the fluid inlet, then the fluid will pass through the horizontal inner flow channel 311 above the first side cover 31 after passing through the pipe 331, and then pass through the pipe 331 of the middle section 33, and enter the horizontal inner flow channel 321 above the second side cover 32; then flow to the vertical upper inner flow channel 312 of the first side cover 31 through the pipe 331, and then pass through the pipe 331 to the vertical upper inner flow channel 322 of the second side cover 32, and so on, and finally the fluid will flow out through the straight-through port 315 below the first side cover 31. Or vice versa, it is also allowed to flow in from the straight-through port 315 below the first side cover 31 and flow out from the straight-through port 325 above the second side cover 32.

[0032] In addition, in order to enhance heat dissipation, such as Figure 4 As shown, a heat dissipation slot 339 in the shape of a rectangular wave is provided on the outer wall of the middle section 33, which can improve the heat dissipation efficiency by direct air cooling. And the heat dissipation slot 339 also extends to the side cover 1 31 and the side cover 2 32.

[0033] like Figure 5 As shown, a transition duct 34 is sandwiched between the side cover 1 31 and the middle section 33, and a threaded hole 316 is provided in the side cover 1 31, and the threaded hole 316 is connected to the inner flow channel ( Figure 4311, 312, 313, 314) in it. The transition duct 34 is used to connect the duct 331 of the middle section 33 with the inner flow channel of the side cover 31, so there are 9 corresponding transition ducts 34. One end of the transition duct 34 is provided with an external thread 341, and during installation, the external thread 341 of the transition duct 34 will first be screwed into the threaded hole 316. The other end of the transition duct 34 is a tapered nozzle 343 with a sealing ring 342, and the opening of the duct 331 is a stepped hole. When the transition duct 34 is inserted into the opening of the duct 331, the tapered nozzle 343 is inserted therein, and the sealing ring 342 is pushed against and pressed by the stepped hole of the opening of the duct 331 to achieve sealing. In addition, Figure 4 The through opening 315 of the middle cover 31 is also a threaded hole, which is convenient for assembly with the external thread 341 of the transition pipe 34 .

[0034] like Figure 3 As shown, a transition duct 35 is also sandwiched between the side cover 2 32 and the middle section 33. The shape and size of the transition duct 35 are the same as those of the transition duct 34 between the side cover 1 31 and the middle section 33. The assembly relationship between the transition duct 35 and the side cover 2 32 and the middle section 33 is also the same as that of the side cover 1 31, so it will not be repeated here. Figure 4 The through opening 325 of the second middle cover 32 is also a threaded hole, which is convenient for assembly with the external thread of the transition pipe 35 .

[0035] In the description of the present invention, it should be noted that the terms "upper", "lower", "top", "bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0036] The above statements are only used to further illustrate the technical content of the present invention by way of examples, so as to facilitate the readers' easier understanding, but do not mean that the implementation methods of the present invention are limited thereto. Any technical extension or re-creation made according to the present invention shall be protected by the present invention.

Claims

1. A moving mechanism of a high-speed placement machine, characterized in that: It includes an X-axis linear motor, a translation plate, and at least two Y-axis linear motors. The X-axis linear motor is fixed on the translation plate. The stators of the two Y-axis linear motors are strong-magnetic round bars and are parallel to each other. The Y-axis linear motors are used to drive the translation plate and the X-axis linear motor to reciprocate linearly. The rotors of the two Y-axis linear motors are respectively fixedly connected to the translation plate. The moving mechanism further includes a side bracket. The translation plate is slidably connected to the side bracket, and the stator of the Y-axis linear motor is fixed in the side bracket. The side bracket includes a base, an upper cover plate, a side cover, and two end brackets. The base, the upper cover plate, the side cover, and the two end brackets are all made of ferromagnetic metals. The two ends of the stator of the Y-axis linear motor are respectively fixed to one end bracket. The two end brackets are fixed on both sides in the length direction of the base. The two ends of the upper cover plate are respectively fixedly connected to the tops of the end brackets. In the direction perpendicular to the length direction of the base, the side cover is fixed to one side of the base and is fixedly connected to the upper cover plate and the end brackets. The other side of the base is used for slidably connecting with the translation plate.

2. The moving mechanism of the high-speed placement machine as claimed in claim 1, characterized in that: The rotors of the two Y-axis linear motors are respectively fixedly connected to the upper and lower surfaces at one end of the translation plate.

3. The moving mechanism of the high-speed placement machine as claimed in claim 1, characterized in that: The rotor of the Y-axis linear motor is fixed in a long strip-shaped heat dissipation cover with a U-shaped cross section. The middle of the heat dissipation cover is hollowed out to form a groove, and the rotor of the Y-axis linear motor is fixed in the groove of the heat dissipation cover.

4. The moving mechanism of the high-speed placement machine as claimed in claim 3, characterized in that: The heat dissipation cover includes a first side cover, a second side cover, and a middle section. The first side cover and the second side cover are both U-shaped and are respectively fixedly attached to both sides in the length direction of the middle section. The cross-sectional shapes and sizes of the first side cover, the second side cover, and the middle section are the same.

5. The moving mechanism of the high-speed placement machine as claimed in claim 4, characterized in that: A number of pipes for fluid flow extending along the length direction of the middle section penetrate through the middle section. The two ends of each pipe are respectively opened on both sides in the length direction of the middle section. The first side cover and the second side cover are respectively provided with a number of internal flow channels. The internal flow channels are used to connect two adjacent pipes in the middle section and make all the pipes penetrate to form a single channel for fluid flow. And the unilateral opening of each pipe is connected to at most one internal flow channel. The other side openings of two adjacent pipes connected by any internal flow channel of the first side cover are not connected to the same internal flow channel on the second side cover.

6. The moving mechanism of the high-speed placement machine according to claim 1, characterized in that: On one side of the top surface of the base, there is a erected side plate. The side plate is integral with the base. The side plate and the top surface of the base form an L-shaped long strip-shaped groove. The height of the stator of the lower Y-axis linear motor is not higher than the height of the side plate, and the lowest height of the stator of the upper Y-axis linear motor is higher than the height of the side plate.

7. The moving mechanism of the high-speed placement machine according to claim 1 or 6, characterized in that: Three holes are provided at the position of the side cover corresponding to the stator of the upper Y-axis linear motor. The lowest height of the holes is higher than the height of the stator of the lower Y-axis linear motor.

8. The moving mechanism of the high-speed placement machine according to claim 1, characterized in that: A long strip-shaped hole is dug at the middle of the top surface of the base corresponding to the position of the stator of the Y-axis linear motor.

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