Sensor chip lead welding device

Abstract

The utility model provides a sensor chip lead welding device which comprises a sensor lead and a wire harness terminal. A lifting mechanism and a linear displacement mechanism are further included, a copper electrode A is vertically arranged on the lifting mechanism, and a copper electrode B is fixed to the linear displacement mechanism; the copper electrode A is configured to drive a sensor lead and a wire harness terminal which are lapped on the copper electrode A to move linearly through a linear displacement mechanism, and the copper electrode B is configured to move vertically through a lifting mechanism and weld the sensor lead and the wire harness terminal which are lapped on the sensor lead. According to the sensor chip lead welding device, accurate guiding and positioning of a sensor lead and a wire harness terminal are achieved through the automatic lifting mechanism and the linear displacement mechanism. By accurately controlling the movement of the copper electrode A and the copper electrode B, the stability of welding parameters such as current, pressure and time is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of sensor chip lead soldering, in particular to a sensor chip lead soldering device. Background Art

[0002] With the rapid development of the automotive industry, the requirements for automotive emission performance are increasing day by day. Among them, sensors, as an important part of automobiles, their performance and reliability directly affect the overall performance of automobiles. In automotive sensors, PM electronic sensors are widely used in the emission systems of automobiles due to their high precision and high stability to control the emission of automotive exhaust gases. However, the connection problem between the external leads of the PM electronic sensor chip and the wiring harness terminals has always been a technical difficulty.

[0003] Traditional soldering technology, due to its low melting point, cannot meet the requirements of automotive sensors for working in high-temperature environments. Especially when the temperature is as high as 400°C or higher, the soldering connection is prone to failure, resulting in sensor damage. Therefore, traditional soldering technology is no longer applicable to the manufacture of modern automotive sensors.

[0004] To solve this problem, those skilled in the art have conducted a large number of studies and explorations, trying to find a soldering technology that can work stably in high-temperature environments. Resistance welding and fusion technology is considered the best solution for connecting the external leads of the sensor chip and the wiring harness terminals due to its stability and reliability in high-temperature environments. However, the magnitude of the current directly affects the melting degree of the welding point. The operator needs to adjust the current according to the thickness and type of the material, but this adjustment often depends on personal experience and intuition, lacking objective criteria and easily leading to inconsistent welding quality. Summary of the Utility Model

[0005] The utility model provides a sensor chip lead soldering device, which solves the problem that in the prior art, the operator often relies on personal experience and intuition, lacks objective criteria, and easily leads to inconsistent welding quality.

[0006] The technical solution of the utility model is realized as follows:

[0007] A sensor chip lead and wiring harness soldering device includes a sensor lead and a wiring harness terminal; it also includes a lifting mechanism and a linear displacement mechanism. A copper electrode A is vertically arranged on the lifting mechanism, and a copper electrode B is fixed on the linear displacement mechanism.

[0008] The copper electrode A is configured to drive the sensor chip lead and the wiring harness terminal placed on the copper electrode A to move linearly through the linear displacement mechanism, and the copper electrode B is configured to move vertically through the lifting mechanism and solder the sensor chip lead and the wiring harness terminal placed on the sensor lead.

[0009] Further, it further includes at least two fixing mechanisms arranged on the linear displacement mechanism for limiting the sensors or wire harnesses.

[0010] Further, the fixing mechanism includes clamping block A and clamping block B, and fixing grooves a and b for surrounding and limiting the sensors or wire harnesses are respectively formed on the adjacent sides of clamping block A and clamping block B.

[0011] Further, it further includes at least two electromagnetic locking parts respectively corresponding to the bottoms of the two sides of clamping block B.

[0012] Further, the clamping block B is a metal part, and the locking part is an electromagnetic part for attracting the metal part.

[0013] The beneficial effects brought by the technical solution provided by this application:

[0014] This sensor chip lead welding device realizes the precise guidance and positioning of the sensor leads and wire harness terminals through the automated lifting mechanism and linear displacement mechanism. Such automated operation reduces the dependence on the experience and skills of the operator, and significantly improves the consistency and repeatability of the welding process. By precisely controlling the movement of copper electrode A and copper electrode B, the stability of welding parameters such as current, pressure, and time is ensured, thereby improving the quality and reliability of the welded joints and meeting the stringent requirements of automotive sensors in high-temperature environments. Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 Schematic diagram of the sensor leads, wire harness terminals, copper electrode A and copper electrode B of the present invention;

[0017] Figure 2 Schematic diagram of the sensor chip lead welding device of the present invention;

[0018] Figure 3 Exploded schematic diagram of the sensor fixing mechanism of the present invention;

[0019] Figure 4 Schematic diagram of the sensor clamping block B and the locking part of the present invention;

[0020] Figure 5 Schematic diagram of the sensor chip lead welding device of the present invention.

[0021] In the figure: 10 sensor leads, 20 harness terminals, 30 copper electrode A, 40 copper electrode B, 50 lifting mechanism, 60 linear displacement mechanism, 70 fixing mechanism, 71 clamping block A, 72 clamping block B, 73 fixing groove a, 74 fixing groove b, 80 locking member. Detailed implementation mode

[0022] Next, the technical solutions of the present utility model will be clearly and completely described in conjunction with the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0023] Refer to Figure 1-2 , a sensor chip lead welding device, including a sensor lead 10 and a harness terminal 20; further including a lifting mechanism 50 and a linear displacement mechanism 60, wherein a copper electrode A 30 is vertically arranged on the lifting mechanism 50, and a copper electrode B 40 is fixed on the linear displacement mechanism 60;

[0024] The copper electrode A 30 is configured to drive the sensor lead 10 and the harness terminal 20 placed on the copper electrode A 30 to move linearly through the linear displacement mechanism 60, and the copper electrode B 40 is configured to move vertically through the lifting mechanism 50 and weld the sensor lead 10 and the harness terminal 20 placed on the sensor lead 10.

[0025] The sensor lead 10 and the harness terminal 20 are the basic components of the welding device, and they are the key components connecting the sensor chip and the external circuit. The lifting mechanism 50 and the linear displacement mechanism 60 are two main mechanical components in the device, and they work together to achieve precise welding positioning. The copper electrode A 30 is arranged on the lifting mechanism 50 and is responsible for moving in the vertical direction to adapt to the welding requirements at different heights. The copper electrode B 40 is fixed on the linear displacement mechanism 60 and is responsible for moving in the horizontal direction to realize the linear welding path of the sensor lead and the harness terminal. The configuration of the copper electrode A 30 and the copper electrode B 40 allows them to accurately position the sensor lead 10 and the harness terminal 20 in three-dimensional space to achieve high-quality welding.

[0026] Among them, the lifting mechanism 50 and the linear displacement mechanism 60 are two common mechanical transmission devices, which are used in automated equipment to achieve precise positioning and movement. The lifting mechanism 50 includes, but is not limited to, an electric push rod: a device that converts the rotational motion of a motor into linear motion for vertical lifting. A hydraulic cylinder: Utilizes the hydraulic principle to generate linear motion and is suitable for lifting applications that require large thrust. A screw lift: Achieves the vertical movement of a nut by rotating a screw rod and is suitable for occasions that require precise control of speed and position. A guide rail system: Includes linear guide rails and ball screws to ensure stability and precision during the lifting process. Sensors: Such as position sensors or encoders, are used to monitor and control the lifting position. The linear displacement mechanism 60 includes, but is not limited to, a linear motor: Directly converts electrical energy into linear motion to provide high-speed and high-precision linear motion control. A belt drive system: The motor drives a belt, and the belt drives a slider or other mechanical components to move along a linear trajectory. A gear and rack system: The motor drives a gear to rotate, and the linear motion is achieved through the meshing of the rack and the gear. Linear guide rails: Provide linear guidance for the moving components to ensure the linearity and stability of the motion. Sliders or slides: Components that move along the guide rails and can carry workpieces or other mechanical components. Encoders or grating scales: Are used to monitor and feedback the position information of the linear motion in real time.

[0027] During the welding process, the sensor lead 10 and the harness terminal 20 are first placed on the copper electrode A30. Subsequently, the linear displacement mechanism 60 drives the copper electrode A30 and the sensor lead and the harness terminal thereon to move along a predetermined straight path. At the same time, the lifting mechanism 50 controls the copper electrode B40 to move vertically to an appropriate welding position. When the two copper electrodes are aligned and approach the sensor lead and the harness terminal, resistance welding is achieved through the current, pressure, and precisely controlled time applied by them. This precise mechanical coordinated movement ensures the consistency and repeatability of the welding process, thereby improving the quality of the welded joint and the production efficiency.

[0028] Refer to Figure 3 , and further includes at least two fixing mechanisms 70 provided on the linear displacement mechanism 60 for limiting the sensor or the harness.

[0029] The fixing mechanism 70 ensures that the sensor lead and the harness terminal remain in the correct position during the welding process by restricting their movement range, avoiding welding deviations caused by movement or vibration. The fixing mechanism 70 firmly fixes the sensor lead and the harness terminal in a predetermined position by means of clamping or positioning. With the start of the linear displacement mechanism 60, the fixing mechanism 70 drives the sensor lead and the harness terminal to move along a straight path to the welding position. During this process, the limiting function of the fixing mechanism 70 ensures the precise alignment of the sensor lead and the harness terminal, providing a stable reference for the welding of the copper electrode A30 and the copper electrode B40.

[0030] Furthermore, the fixing mechanism 70 includes a clamping block A71 and a clamping block B72. Fixing grooves a73 and b74 for surrounding the sensor or wire harness limit are respectively formed on the adjacent sides of the clamping block A71 and the clamping block B72.

[0031] The clamping block A71 is an integral part of the fixing mechanism. Its adjacent side is provided with the fixing groove a73 for surrounding and restricting the position of the sensor lead 10 or the wire harness terminal 20. The clamping block B72 corresponds to the clamping block A. Its adjacent side is provided with the fixing groove b74, which is also used to restrict the position of the sensor lead or the wire harness terminal, and works together with the fixing groove a to provide stable fixation. The designs of the fixing grooves a73 and b74 can ensure that the sensor lead or the wire harness terminal will not be displaced or rotated during the welding process, thus guaranteeing the accuracy and consistency of the welding.

[0032] Before the welding operation, the sensor lead 10 and the wire harness terminal 20 are placed between the fixing grooves a73 and b74 formed by the clamping block A71 and the clamping block B72. The designs of these two fixing grooves ensure the accurate positioning of the sensor lead and the wire harness terminal before welding. When the linear displacement mechanism 60 is activated, the clamping block A71 and the clamping block B72, together with the sensor lead and the wire harness terminal in the fixing grooves, move along a straight path. Due to the limiting effects of the fixing grooves a and b, the sensor lead and the wire harness terminal remain stable during the whole movement process, reducing the deviation caused by vibration or improper positioning.

[0033] In addition, the fixing mechanism 70 can also be a fixture, a chuck, a positioning pin or other mechanical fixing devices, which are designed to firmly position and fix the sensor lead and the wire harness terminal on the linear displacement mechanism 60.

[0034] Referring to Figure 4 , it further includes at least two locking members 80 respectively corresponding to the bottoms of the two side clamping blocks B72. The function of the locking members 80 is to provide additional fixation and stability to ensure that the clamping block B72 will not be displaced or vibrated during the welding process. Before the welding operation, the sensor lead 10 and the wire harness terminal 20 are placed in the fixing grooves a73 and b74 between the clamping block A71 and the clamping block B72. Subsequently, at least two locking members 80 are activated or locked to fix the position of the clamping block B72.

[0035] Furthermore, the clamping block B72 is a metal part, and the locking part 80 is an electromagnetic part that attracts the metal part. The metal clamping block B72, as a part of the fixing mechanism, its metal material enables it to respond to the electromagnetic force and provides an acting object for the electromagnetic locking part. These electromagnetic parts of the electromagnetic locking part 80 generate a magnetic field when energized, which can attract the metal clamping block B72 and thus firmly fix it in place. Before the welding operation, the sensor lead 10 and the wire harness terminal 20 are placed between the fixing groove a73 and the fixing groove b74 and are preliminarily fixed by the clamping block A71 and the metal clamping block B72. At this time, the electromagnetic locking part 80 is not yet activated.

[0036] When a welding operation is required, the electromagnetic locking part 80 is energized and activated to generate a magnetic field. This magnetic field attracts the metal clamping block B72 and enhances its fixing force, ensuring that the clamping block B72 does not undergo any displacement or vibration during the welding process. This electromagnetic attraction provides a fast, reliable and reversible fixing method. Compared with the mechanical locking method, the electromagnetic locking can more flexibly control the fixing and releasing processes.

[0037] The locking part 80 can also be a bolt, a buckle, a wedge block or other forms of locking mechanisms, which are designed to fix the clamping block B72 and prevent it from moving during the welding operation.

[0038] Referring to Figure 5 , a base (not marked in the figure) is provided at the bottom of the linear displacement mechanism 60, and the base is connected to the lifting mechanism 50 by setting up columns. The base serves as the support foundation of the linear displacement mechanism 60, and the base provides a stable installation platform for the entire welding device. The column is a vertical support member connecting the base and the lifting mechanism 50, and they transfer the stability of the base to the lifting mechanism to ensure the structural stability of the entire welding device.

[0039] The base provides a stable starting point for the linear displacement mechanism 60 to ensure its stability and accuracy during movement. The column extends vertically upward from the base and is connected to the lifting mechanism 50. This design enables the lifting mechanism 50 to move stably in the vertical direction without being affected by the horizontal movement of the linear displacement mechanism 60.

[0040] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. Sensor chip lead soldering device, comprising a sensor lead (10) and a wire harness terminal (20); characterized in that, It further includes a lifting mechanism (50) and a linear displacement mechanism (60). A copper electrode A (30) is vertically arranged on the lifting mechanism (50), and a copper electrode B (40) is fixed on the linear displacement mechanism (60). The copper electrode A (30) is configured to drive the sensor lead (10) and the wire harness terminal (20) placed on the copper electrode A (30) to move linearly through the linear displacement mechanism (60). The copper electrode B (40) is configured to move vertically through the lifting mechanism (50) and weld the sensor lead (10) and the wire harness terminal (20) placed on the sensor lead (10).

2. The wire bonding device for a sensor chip according to claim 1, wherein It further includes at least two fixing mechanisms (70) arranged on the linear displacement mechanism (60) for limiting the sensor or the wire harness.

3. The sensor chip lead soldering device according to claim 2, wherein, The fixing mechanism (70) includes a clamping block A (71) and a clamping block B (72). Fixing grooves a (73) and fixing grooves b (74) for surrounding and limiting the sensor or the wire harness are respectively formed on the adjacent sides of the clamping block A (71) and the clamping block B (72).

4. The lead soldering device for the sensor chip according to claim 3, characterized in that It further includes at least two locking members (80) respectively corresponding to the bottoms of the two side clamping blocks B (72).

5. The sensor chip lead soldering device according to claim 4, characterized in that, The clamping block B (72) is a metal part, and the locking member (80) is an electromagnetic part for attracting the metal part.

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