阅读说明：本技术 锡波高度测量系统及其方法 (Tin wave height measuring system and method ) 是由 元哲璋 韩雪山 李中华 于 2020-04-22 设计创作，主要内容包括：本发明公开了一种锡波高度测量系统及其方法,其通过配置底座于波峰焊设备的传输机构所设置的承托链爪上,使底座的部分底面紧贴承托链爪的底部承托面,设置于底座的第一金属接触单元接触锡炉中的锡液；当测量控制器接收到测量指令时,控制电动滑台,使固接电动滑台的固定杆其终端所设置的第二金属接触单元从预设位置往锡炉的方向移动,直至接触到锡炉中锡波的峰顶,以接收到导通信号,进而依据第二金属接触单元从预设位置移动至接触到锡波的峰顶的距离取得锡波的高度值；以及显示装置显示锡波的高度值。因此,可实现对锡波高度的量化精准测量。(The invention discloses a tin wave height measuring system and a method thereof.A base is configured on a bearing chain claw arranged on a transmission mechanism of wave soldering equipment, so that part of the bottom surface of the base is tightly attached to the bottom bearing surface of the bearing chain claw, and a first metal contact unit arranged on the base is contacted with tin liquid in a tin furnace; when the measurement controller receives a measurement instruction, the electric sliding table is controlled, a second metal contact unit arranged at the terminal of a fixed rod fixedly connected with the electric sliding table moves from a preset position to the direction of the tin furnace until the second metal contact unit contacts the peak of the tin wave in the tin furnace, so that a conduction signal is received, and the height value of the tin wave is obtained according to the distance from the preset position to the peak of the tin wave; and the display device displays the height value of the tin wave. Therefore, the quantitative and accurate measurement of the tin wave height can be realized.)

1. The utility model provides a tin ripples height measurement system is applied to a wave soldering equipment, and wherein, this wave soldering equipment includes a transmission device, is provided with a bearing chain claw on this transmission device, and this tin ripples height measurement system includes:

a base selectively arranged on the bearing chain claw and provided with a first metal contact unit, wherein when the base is arranged on the bearing chain claw, part of the bottom surface of the base clings to a bottom bearing surface of the bearing chain claw, and the first metal contact unit is contacted with tin liquid in a tin furnace;

the electric sliding table is arranged on the base and is provided with a fixed rod, wherein a second metal contact unit is arranged at the terminal of the fixed rod;

the measurement controller is electrically connected with the first metal contact unit and the second metal contact unit and used for controlling the electric sliding table to enable the second metal contact unit to move from a preset position to the direction of the tin furnace until the second metal contact unit contacts the crest of a tin wave in the tin furnace when a measurement instruction is received so as to receive a conduction signal, and then the height value of the tin wave is obtained according to the distance from the preset position to the crest of the tin wave; and

and the display device is connected with the measurement controller and is used for displaying the height value of the tin wave acquired by the measurement controller.

2. The tin wave height measurement system of claim 1, wherein the electric slide includes a stepper motor that drives the fixed bar to move.

3. The system of claim 1, wherein a side of the base is configured to abut a vertical support surface of the support chain claw when the base is configured to the support chain claw.

4. A tin wave height measuring method is applied to wave soldering equipment, wherein the wave soldering equipment comprises a transmission mechanism, a bearing chain claw is arranged on the transmission mechanism, and the tin wave height measuring method comprises the following steps:

providing a tin wave height measuring system, wherein the tin wave height measuring system comprises a base, an electric sliding table, a measuring controller and a display device, the base is provided with a first metal contact unit, the electric sliding table is arranged on the base and provided with a fixed rod, the terminal of the fixed rod is provided with a second metal contact unit, the measuring controller is electrically connected with the first metal contact unit and the second metal contact unit, and the display device is connected with the measuring controller;

arranging the base on the bearing chain claw, enabling part of the bottom surface of the base to be tightly attached to a bottom bearing surface of the bearing chain claw, and enabling the first metal contact unit to be in contact with tin liquid in a tin furnace;

when the measurement controller receives a measurement instruction, the electric sliding table is controlled to enable the second metal contact unit to move from a preset position to the direction of the tin furnace until the second metal contact unit contacts the peak of a tin wave in the tin furnace so as to receive a conduction signal, and then the height value of the tin wave is obtained according to the distance from the preset position of the second metal contact unit to the peak of the tin wave; and

the display device displays the height value of the tin wave obtained by the measurement controller.

5. The solder wave height measuring method according to claim 4, wherein the electric slide table includes a stepping motor that drives the fixing rod to move.

6. The method of claim 4, wherein a side of the base is positioned against a vertical support surface of the support chain claw when the base is positioned on the support chain claw.

Technical Field

The invention relates to a height measuring system and a method thereof, in particular to a tin wave height measuring system and a method thereof.

Background

When the electronic element is to be soldered on the circuit board by the wave soldering equipment, the wave soldering equipment clamps and conveys the carrier plate carrying the circuit board, so that the circuit board exposed out of the soldering surface passes through the surface of the tin wave to complete the soldering of the electronic element pin on the soldering surface. The wave soldering equipment comprises two tin waves: the height of the two tin waves is a very important parameter, and the tin waves affect the quality of circuit board welding due to the size and duration of the contact welding surface. The improper tin wave height can cause the continuous welding or the missing welding of the pins of the electronic elements, so that operators of wave soldering equipment need to frequently detect the tin wave height to ensure good and stable production quality.

However, since no dedicated tin wave height measuring device is currently available, operators of wave soldering devices often employ simple devices, such as: steel rulers, which measure by visual observation of the reading, but such measurement is susceptible to human factors, such as: different operators have different operating methods, so that different measurement results and different observation angles can be obtained, the error of visual reading is large, the measurement results are not accurate enough, the error range can be 1 mm to 3 mm, and the accuracy (namely 0.1 mm) which is not in line with the requirements of general equipment is not met, so that when a client audits production equipment and a production process, the client often can cause audit failure, and in the serious case, even the client can influence the decision of ordering the client, and the influence is huge.

From the above, it is known that the quantization of the tin wave height is not accurate enough in the prior art, and therefore, it is necessary to provide an improved technical means to solve the problem.

Disclosure of Invention

The invention discloses a tin wave height measuring system and a method thereof.

The invention discloses a tin wave height measuring system which is applied to wave soldering equipment. Tin ripples height measurement system includes: the device comprises a base, an electric sliding table, a measurement controller and a display device, wherein the base is selectively arranged on a bearing chain claw and is provided with a first metal contact unit, when the base is arranged on the bearing chain claw, part of the bottom surface of the base clings to the bottom bearing surface of the bearing chain claw, and the first metal contact unit is in contact with tin liquid in a tin furnace; the electric sliding table is arranged on the base and is provided with a fixed rod, and a second metal contact unit is arranged at the terminal of the fixed rod; the measurement controller is electrically connected with the first metal contact unit and the second metal contact unit and used for controlling the electric sliding table to enable the second metal contact unit to move from the direction of the tin furnace at the preset position until the second metal contact unit contacts the peak of the tin wave in the tin furnace when a measurement instruction is received, so that a conduction signal is received, and the height value of the tin wave is obtained according to the distance from the preset position to the peak of the tin wave; and the display device is connected with the measurement controller and is used for displaying the height value of the tin wave obtained by the measurement controller.

In addition, the invention discloses a tin wave height measuring method which is applied to wave soldering equipment. The tin wave height measuring method comprises the following steps: providing a tin wave height measuring system, wherein the tin wave height measuring system comprises a base, an electric sliding table, a measuring controller and a display device, the base is provided with a first metal contact unit, the electric sliding table is arranged on the base and provided with a fixed rod, the terminal of the fixed rod is provided with a second metal contact unit, the measuring controller is electrically connected with the first metal contact unit and the second metal contact unit, and the display device is connected with the measuring controller; arranging a base on the bearing chain claw, enabling part of the bottom surface of the base to be tightly attached to the bearing surface of the bottom of the bearing chain claw, and enabling the first metal contact unit to be in contact with tin liquid in a tin furnace; when the measurement controller receives a measurement instruction, the electric sliding table is controlled to enable the second metal contact unit to move from the preset position to the direction of the tin furnace until the second metal contact unit contacts with the peak of the tin wave in the tin furnace, so that a conduction signal is received, and the height value of the tin wave is obtained according to the distance from the preset position to the peak of the tin wave; and the display device displays the height value of the tin wave obtained by the measurement controller.

The system and the method disclosed by the invention have the difference from the prior art that the base is arranged on the bearing chain claw arranged on the transmission mechanism of the wave soldering equipment, so that part of the bottom surface of the base is tightly attached to the bottom bearing surface of the bearing chain claw, and the first metal contact unit arranged on the base is contacted with the tin liquid in the tin furnace; when the measurement controller receives a measurement instruction, the electric sliding table is controlled to enable the second metal contact unit to move from the preset position to the direction of the tin furnace until the second metal contact unit contacts the peak top of the tin wave in the tin furnace, so that a conduction signal is received, and the height value of the tin wave is obtained according to the distance from the preset position to the peak top of the tin wave; and the display device displays the height value of the tin wave obtained by the measurement controller.

Through the technical means, the tin wave height measuring device can utilize the conductive characteristic of tin wave soldering tin, adopts a high-precision electric sliding table with a measurable range and is assisted with a specially designed base and a measuring controller, so that the quantitative and accurate measurement of the tin wave height is realized, the ambiguity of manual measurement reading is avoided, and the measurement difference caused by the operation of different operators is also avoided.

Drawings

Fig. 1 is a schematic perspective view of a transmission mechanism of a wave soldering apparatus to which the tin wave height measuring system of the present invention is applied.

Fig. 2A is a schematic view of an embodiment of a clamping chain claw clamping carrier plate of the conveying mechanism of fig. 1.

Figure 2B is a schematic view of one embodiment of the conveyor mechanism of figure 1 with the carrier chain claws holding the carrier tray.

FIG. 3 is a flowchart of a method of measuring a solder wave height according to an embodiment of the present invention.

Fig. 4 is a schematic view of an embodiment of the tin wave height measuring system of the present invention applied to the transmission mechanism of fig. 1.

Fig. 5A is a schematic view of an embodiment of the second metal contact unit in fig. 4 at a predetermined position.

Fig. 5B is a schematic view of an embodiment of the second metal contact unit of fig. 4 contacting a peak of a tin wave.

Description of reference numerals:

50 clamping chain claw

60 bearing chain claw

62 bottom bearing surface

64 vertical bearing surface

70 circuit board

80 carry dish

90 tin stove

92 tin liquid

94 tin wave

100 transport mechanism

310 base

312 bottom surface

314 side surface

316 first metal contact unit

320 electric sliding table

321 slide block

322 fixed rod

324 second metal contact unit

326 stepping motor

330 measurement controller

332 input interface

334 processing module

336 control module

340 display device

Height of M

P, Q distance

Length of R

Detailed Description

Before describing the tin wave height measuring system and method disclosed by the present invention, the self-defined terms of the present invention are described, and the measuring controller and the display device included in the tin wave height measuring system of the present invention can be implemented mainly by hardware, and can be operated in cooperation with software or firmware. Among other things, the software or firmware used in implementation may be stored on a machine-readable storage medium, such as: read Only Memory (ROM), Random Access Memory (RAM), magnetic disk storage media, optical storage media, flash memory devices, etc., and can be implemented by one or more general-purpose or special-purpose programmable microprocessors. The electric sliding table and the measurement controller and the display device and the measurement controller can transmit signals and data in a wireless or wired mode.

The embodiments of the present invention will be described in detail with reference to the drawings and examples, so that how to implement the technical means for solving the technical problems and achieving the technical effects of the present invention can be fully understood and implemented.

Please refer to fig. 1, fig. 2A, and fig. 2B, where fig. 1 is a schematic perspective view of a partial structure of an embodiment of a transmission mechanism of a wave soldering apparatus applied to a tin wave height measuring system according to the present invention, fig. 2A is a schematic view of an embodiment of a clamping chain claw holding tray of the transmission mechanism of fig. 1, and fig. 2B is a schematic view of an embodiment of a supporting chain claw holding tray of the transmission mechanism of fig. 1. It should be noted that, since the transport mechanism 100 clamps or holds the carrier tray 80 carrying the circuit board 70 by the pair of clamping claws 50 and the supporting claws 60, the transport mechanism in "fig. 1" is only drawn as a representative of a single-sided three-dimensional structure of the transport mechanism. In this embodiment, the transporting mechanism 100 of the wave soldering apparatus may be provided with a clamping chain claw 50 and a supporting chain claw 60, the clamping chain claw 50 may be used for clamping the carrier tray 80 carrying the circuit board 70, and the supporting chain claw 60 may be used for supporting the carrier tray 80 carrying the circuit board 70. In more detail, the lower end of the clamping chain claw 50 is provided with a V-shaped claw to clamp the carrier plate 80 carrying the circuit board 70; the lower end of the support chain claw 60 is provided with an L-shaped support claw (i.e. a bottom support surface 62 and a vertical support surface 64 which are perpendicular to each other, as shown in fig. 2B) for supporting the carrier tray 80 for carrying the circuit board 70; the clamping chain claws 50 and the bearing chain claws 60 are arranged at intervals according to a specific proportion, and the number and the arrangement mode of the clamping chain claws 50 and the bearing chain claws 60 can be adjusted according to actual requirements.

Please refer to fig. 3 and fig. 4, where fig. 3 is a flow chart of a method of the tin wave height measuring method according to an embodiment of the present invention, and fig. 4 is a schematic view of a tin wave height measuring system according to an embodiment of the present invention applied to the transmission mechanism of fig. 1. In this embodiment, the tin wave height measuring method may include the following steps: providing a tin wave height measuring system, wherein the tin wave height measuring system comprises a base, an electric sliding table and a measuring controller, the base is provided with a first metal contact unit, the electric sliding table is arranged on the base and provided with a fixed rod, the terminal of the fixed rod is provided with a second metal contact unit, and the measuring controller is electrically connected with the first metal contact unit and the second metal contact unit (step 210); arranging a base on the bearing chain claw, enabling part of the bottom surface of the base to be tightly attached to the bottom bearing surface of the bearing chain claw, and enabling the first metal contact unit to be in contact with tin liquid in a tin furnace (step 220); when the measurement controller receives the measurement instruction, the electric sliding table is controlled to enable the second metal contact unit to move from the preset position to the direction of the tin furnace until the second metal contact unit contacts with the peak top of the tin wave in the tin furnace, so that a conduction signal is received, and the height value of the tin wave is obtained according to the distance from the preset position to the peak top of the tin wave (step 230); and the display device displays the height value of the tin wave obtained by the measurement controller (step 240).

In step 210, the tin wave height measurement system may be applied to the transport mechanism of "fig. 1". In the embodiment, the base 310 may be, but not limited to, a rectangular parallelepiped (i.e., the bottom surface 312 and the side surface 314 are perpendicular to each other), and the bottom surface 312 may be provided with the first metal contact unit 316, but the embodiment is not limited to the invention, for example, the base 310 may be a cube, and the side surface 314 may be provided with the first metal contact unit 316 extending downward; the electric sliding table 320 comprises a sliding block 321, the sliding block 321 can only move along a direction perpendicular to the bottom surface 312, and the sliding block 321 drives the fixed rod 322 fixed thereon to move when moving; one side of the fixing rod 322 is fixedly connected with the sliding block 321, the other side of the fixing rod 322 is provided with a second metal contact unit 324, and the bottom surface of the second metal contact unit 324 (i.e. the surface to be contacted with the peak of the tin wave 94 later) is a plane and is parallel to the bottom surface 312 of the base 310. It should be noted that the area of the bottom surface of the second metal contact unit 324 is adjusted according to the requirement that the peak of the tin wave 94 can be contacted subsequently.

In step 220, since the base 310 may be, but not limited to, a cube or a rectangular parallelepiped, when the base 310 is disposed on the support chain claw 60, a portion of the bottom surface 312 of the base 310 may be closely attached to the bottom support surface 62 of the support chain claw, and the first metal contact unit 316 disposed on the bottom surface 312 may contact the molten tin 92 (i.e., molten solder) in the tin furnace 90. Further, since the bottom surface 312 and the side surface 314 of the base 310 are perpendicular to each other and the bottom receiving surface 62 and the vertical receiving surface 64 of the support chain claw 60 are perpendicular to each other, even when the base 310 is disposed on the support chain claw 60, the side surface 314 of the base 310 can be closely attached to the vertical receiving surface 64 of the support chain claw 60, so that the base 310 is closely attached to the bottom receiving surface 62 and the vertical receiving surface 64 of the support chain claw 60, and an error in the measurement reference point can be avoided.

In step 230, the measurement controller 330 may include an input interface 332, a processing module 334 and a control module 336, and an operator of the wave soldering apparatus may input a measurement command to the measurement controller 330 via the input interface 332 (e.g., a switch or a button), when the measurement controller 330 receives the measurement command, the control module 336 starts to control the electric sliding table 320 to move, so that the second metal contact unit 324 moves from the preset position to the direction of the tin furnace 90 until contacting the peak of the tin wave 94 in the tin furnace 90, so as to receive the conducting signal (at this time, the first metal contact unit 316 and the second metal contact unit 324 both contact the tin liquid 92, so the circuit is conducted, and the method is adopted to judge whether the second metal contact unit 324 contacts the peak of the tin wave 94 to avoid tin wave contact error), and then the height of the tin wave 94 is obtained according to the distance from the second metal contact unit 324 moving from the predetermined position to the peak of the tin wave 94.

More specifically, the distance between the fixed position of the slider 321 and the fixing rod 322 and the surface of the molten tin 92 when the solder wave 94 is not generated in the solder pot 90 is P, the length of the fixing rod 322 is R, and the height of the second metal contact unit 324 is M, so the distance between the bottom surface of the second metal contact unit 324 and the surface of the molten tin 92 when the solder wave 94 is not generated in the solder pot 90 is P-R-M (at this time, the preset position of the second metal contact unit 324 can be adjusted by controlling the size of P by an operator according to actual requirements, as shown in "fig. 5A", and "fig. 5A" is an exemplary illustration of the second metal contact unit in the preset position of "fig. 4"); when the control module 336 controls the sliding table 321 of the electric sliding table 320 to move, so that the second metal contact unit 324 contacts the peak of the tin wave in the tin furnace 90 (as shown in "fig. 5B", where "fig. 5B" is an illustration of an embodiment of "fig. 4" in which the second metal contact unit contacts the peak of the tin wave), the processing module 334 may first determine a distance Q that the sliding block 321 moves downward, and then determine that the height value of the tin wave 94 is P-R-M-Q (i.e., the height value of the tin wave 94 is obtained according to the distance from the preset position to the peak of the tin wave 94 that the second metal contact unit 324 contacts).

It should be noted that, since the tin waves 94 in the tin furnace 90 are actually tin waves 94 arranged in a row, in order to avoid the complicated drawings of "fig. 5A" and "fig. 5B", only a single tin wave 94 is drawn in the drawings of "fig. 5A" and "fig. 5B" to represent the tin waves.

In this embodiment, the electric sliding table 320 may include a stepping motor 326 connected to a control module 336, and the control module 336 may drive the sliding block 321 and the fixing rod 322 to move through the stepping motor 326. The part adopts the high-precision electric sliding table capable of measuring the distance, so that the measuring precision can reach 0.05 mm, and the precision requirement (namely 0.1 mm) of common equipment is met.

In step 240, the display device 340 can directly display the height value of the tin wave obtained by the measurement controller 330, thereby avoiding ambiguity of manual measurement reading.

In addition, in the present embodiment, the base 310 may be disposed on a single-sided supporting chain claw 60, and the electrical sliding table 320 disposed thereon is used to perform a tin wave height measuring method (as shown in "fig. 4", "fig. 5A", and "fig. 5B"), in order to avoid that a part of the bottom surface 312 of the base 310 disposed with the electrical sliding table 320 cannot be closely attached to the bottom supporting surface 62 of the supporting chain claw 60 due to unstable center of gravity, or a part of the bottom surface 62 and the side surface 64 thereof cannot be closely attached to the bottom supporting surface 62 and the vertical supporting surface 64 of the supporting chain claw 60, respectively, the tin wave height measuring system may further include a fixing mechanism (not shown) for fixing the base 310 on the transmission mechanism 100, so that a part of the bottom surface 312 of the base 310 can be closely attached to the bottom supporting surface 62 of the supporting chain claw 60, or a part of the bottom surface 62 and the side surface 64 of the base 310 can be closely attached to the bottom supporting surface 62 and the vertical supporting surface 64 of the supporting chain claw 60, errors in measuring the reference point can be avoided.

In addition, the base 310 may be disposed on one side of the supporting chain claws 60, or may be stably disposed on the paired supporting chain claws 60, and may be used with the electric slide table 320 disposed thereon to perform a tin wave height measuring method.

In summary, it can be seen that the difference between the present invention and the prior art is that the bottom surface of the base is tightly attached to the bottom supporting surface of the supporting chain claw by disposing the base on the supporting chain claw arranged on the transmission mechanism of the wave soldering device, and the first metal contact unit arranged on the base is in contact with the tin liquid in the tin furnace; when the measurement controller receives a measurement instruction, the electric sliding table is controlled to enable the second metal contact unit to move from the preset position to the direction of the tin furnace until the second metal contact unit contacts the peak top of the tin wave in the tin furnace, so that a conduction signal is received, and the height value of the tin wave is obtained according to the distance from the preset position to the peak top of the tin wave; the display device displays the height value of the tin wave obtained by the measurement controller, and the technical means can solve the problems in the prior art, further realize quantitative and accurate measurement of the tin wave height, avoid the ambiguity of manual measurement reading and avoid measurement differences caused by operation of different operators.

Although the present invention has been described with reference to the foregoing embodiments, it should be understood that various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the invention.