Contact force uniformization calibration platform for welding fixture of array sensor pin

Abstract

The invention relates to the technical field of welding calibration platforms, and discloses an array sensor pin welding clamp contact force homogenization calibration platform which comprises a base and a mounting disc arranged on the base, a driving part and four execution assemblies are arranged on the mounting disc, and each execution assembly comprises a bearing frame. A sensor body, a limiting piece and a smoothing piece are placed in the bearing frame, the limiting piece comprises two abutting blocks and a push plate, and clamping and limiting work of the sensor body is achieved through synchronous approaching of the two abutting blocks and the push plate. The contact force uniformization calibration platform for the welding clamp of the array sensor pin can effectively solve the problems that in the prior art, due to the fact that force applied to a sensor and a lead wire is not uniform, the sensor pin and the lead wire cannot be in uniform contact, the uneven contact can cause skew or pseudo soldering of a welding point position of the sensor pin and the lead wire, and the welding precision of the sensor pin and the lead wire is affected. The normal work and the service life of the welded sensor are further influenced.

Description

Technical Field

[0001] This invention relates to the field of welding calibration platform technology, and more specifically to a welding fixture contact force uniformity calibration platform for array sensor pins. Background Technology

[0002] Sensors, as devices that convert physical quantities such as temperature, pressure, humidity, and light into electrical signals, are widely used in various industrial, agricultural, and medical fields. In the manufacturing process of sensors, pin soldering is a crucial step. Pins are not only a bridge connecting the internal circuitry of the sensor to the external circuitry, but also a guarantee that the sensor can transmit signals stably and reliably.

[0003] However, during the sensor pin soldering process, uneven force applied to the sensor and leads can cause uneven contact between the sensor pins and leads. This uneven contact can lead to misalignment or poor soldering at the soldering points between the sensor pins and leads, which in turn affects the normal operation and lifespan of the sensor after soldering. Summary of the Invention

[0004] To address the aforementioned shortcomings of existing technologies, this invention provides a contact force uniformity calibration platform for welding fixtures of array sensor pins. This platform effectively solves the problem in existing technologies where uneven force applied to the sensor and leads leads to uneven contact between the sensor pins and leads. This uneven contact causes misalignment or poor soldering at the welding points between the sensor pins and leads, thereby affecting the normal operation and lifespan of the sensor after welding.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] This invention provides a calibration platform for uniformizing the contact force of welding fixtures for array sensor pins, comprising:

[0007] The base has a mounting plate rotatably connected to an external drive unit, and the mounting plate has four receiving slots on its end face along the circumferential direction. Each of the four receiving slots contains a drive component.

[0008] The execution components are arranged in four positions, corresponding to the positions of the receiving slots, on the upper surface of the installation disk;

[0009] The execution component includes a support frame with a U-shaped cross-section, which is set on the receiving groove. The sensor body is placed inside the support frame. Limiting members and leveling members for clamping and aligning the sensor body are respectively set inside the support frame and at both ends of the sensor body.

[0010] The limiting piece comprises two abutting blocks slidingly penetrating the support frame and located at the non-pin end of the sensor body, and a push plate provided with an end face opening avoiding slot on the side close to the pin of the sensor body, the abutting block and the push plate in the same support frame are simultaneously close to the sensor body under the driving of the driving piece, thereby realizing the clamping and limiting of the sensor body.

[0011] Further, one end of the support frame is designed as an inclined table, a plurality of rotating rollers for reducing the sliding friction of the sensor body are connected to the inclined surface of the inclined table along the inclined direction, and the two inner side walls of the support frame are both provided with a sliding groove in which a protrusion is fixedly arranged, and the two ends of the protrusion are both provided with chamfers.

[0012] Further, an auxiliary block is slidingly arranged in the sliding groove, the side close to the sensor body of the auxiliary block is provided with a clamping block slidingly penetrating the auxiliary block and provided with chamfers at both ends corresponding to the positions of the protrusions, and the inclined surface of the protrusion is in close contact with the inclined surface of the clamping block.

[0013] Further, the driving piece comprises two transmission gears rotatingly arranged on the lower end surface of the mounting frame and located in the accommodating groove, a double-sided gear meshingly arranged between the two transmission gears and slidingly connected with the mounting disc, and a transmission rack meshingly arranged at the end away from the two transmission gears and slidingly connected with the side wall of the accommodating groove, the two abutting blocks are respectively connected with the corresponding transmission racks downward, and the push plate is connected with the double-sided gear through the connecting block slidingly penetrating the mounting frame.

[0014] Further, the limiting piece further comprises two blocking blocks slidingly arranged in the mounting frame and used for blocking the sensor body, the side close to the sensor body of the blocking block is provided with a rectangular groove, and an elastic block in close contact with the sensor body is connected in the rectangular groove through a compression spring.

[0015] Further, the flattening piece comprises a sleeve slidingly arranged in the support frame and corresponding to the number of pins of the sensor body, one end of the sleeve is provided with three clamping plates through a torsion spring, the side close to the pin of the sensor body of the clamping plate is fixedly provided with a plurality of semicircular contact blocks along the arc direction, and the lower ends of the plurality of sleeves are all connected with a square plate through a strip-shaped block penetrating the push plate and the support frame.

[0016] Further, the outer wall of the sleeve is sleeved with a semicircular ring with a chamfer opened in the inner wall, the lower end of the semicircular ring is slidingly arranged in the avoiding slot through a supporting block, and the end surface of the supporting block is provided with a magnet, and the supporting block is magnetically connected with the inner wall of the avoiding slot through the magnet.

[0017] Further, an adjusting disc with a guide slot opened in the end surface is fixedly arranged between the mounting disc and the base, a linkage rod slidingly arranged in the guide slot is arranged at the position corresponding to the double-sided gear, and the linkage rod is connected with the corresponding double-sided gear upward.

[0018] Compared with the prior art, the technical scheme provided by the present application has the following beneficial effects:

[0019] The present application sets a limiting piece, in the process of following the installation disc rotating, the linkage rod will slide along the guide groove in the shape of a heart, and in the sliding process, the double-sided rack and the push plate are synchronously moved, in this process, the double-sided rack synchronously engages two transmission gears, so that the two transmission gears respectively drive the corresponding transmission racks and the abutting blocks to move, the abutting blocks and the push plate realize the clamping and limiting work of the two ends of the sensor body in the synchronous approaching process, avoiding the sensor body from being skewed due to uneven force before welding, laying a foundation for uniform contact of the subsequent pins and lead wires. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0021] Figure 1 The present application is a three-dimensional structure schematic diagram of the embodiment;

[0022] Figure 2 The present application is a three-dimensional structure schematic diagram of the embodiment;

[0023] Figure 3 The present application is a three-dimensional structure schematic diagram of the embodiment;

[0024] Figure 4 The present application is a three-dimensional structure schematic diagram of the embodiment;

[0025] Figure 5 The present application is a three-dimensional structure schematic diagram of the embodiment;

[0026] Figure 6 The present application is a three-dimensional structure schematic diagram of the embodiment;

[0027] Figure 7 The present application is a three-dimensional structure schematic diagram of the embodiment;

[0028] Figure 8 The present application is a three-dimensional structure schematic diagram of the embodiment Figure 7 The present application is a three-dimensional structure schematic diagram of the embodiment

[0029] Figure 9 The present application is a three-dimensional structure schematic diagram of the embodiment Figure 7 The present application is a three-dimensional structure schematic diagram of the embodiment The present application is a three-dimensional structure schematic diagram of the embodiment

[0030] Figure 10 It is a three-dimensional structure schematic view of sleeve and clamping plate of the embodiment of the present application.

[0031] Figure 11 It is a three-dimensional structure schematic view of bearing bracket and mounting disc of the embodiment of the present application.

[0032] Figure 12 It is a three-dimensional structure schematic view of sleeve and clamping plate of the embodiment of the present application. Figure 11 It is a structure schematic view of local amplification at C in the middle.

[0033] The reference signs in the figure respectively represent: 1, base; 11, mounting disc; 111, containing groove; 112, adjusting disc; 113, guide slot; 114, linkage rod; 12, driving piece; 121, transmission gear; 122, double-sided gear; 123, transmission rack; 2, execution assembly; 21, bearing bracket; 211, rotating roller; 212, sliding groove; 213, protruding block; 214, auxiliary block; 215, clamping block; 22, limiting piece; 221, abutting block; 222, push plate; 223, avoiding slot; 224, stop block; 225, elastic block; 23, flattening piece; 231, sleeve; 232, clamping plate; 233, contact block; 234, semicircular ring; 235, supporting block; 3, sensor body. DETAILED DESCRIPTION

[0034] To make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0035] The present application will be further described below in combination with the embodiments.

[0036] Embodiment:

[0037] Please refer to Figure 1 - Figure 12 The present application provides a technical scheme: a welding clamp contact force homogenization calibration platform for array sensor pins, comprising:

[0038] The base 1 is rotationally connected with the mounting disc 11 connected with the external driving machine group and having four containing grooves 111 opened on the end face in the circumferential direction, the adjusting disc 112 having the guide slot 113 opened on the end face is arranged between the mounting disc 11 and the base 1, the output shaft of the external driving machine group penetrates the base 1 and the adjusting disc 112 in turn and is in transmission connection with the lower end face of the mounting disc 11, and the four containing grooves 111 have the driving pieces 12 arranged in the inside respectively;

[0039] The execution assembly 2 is arranged on the upper surface of the mounting disc 11 and is provided with four positions corresponding to the accommodating grooves 111;

[0040] The execution assembly 2 comprises a supporting frame 21 arranged on the accommodating groove 111 and having a U-shaped cross section, the inside of the supporting frame 21 is arranged with the sensor body 3, and the inside of the supporting frame 21 and at both ends of the sensor body 3 are respectively arranged with a limiting piece 22 and a flattening piece 23 for realizing clamping and positioning of the sensor body 3.

[0041] The limiting piece 22 comprises two abutting blocks 221 slidingly penetrating the supporting frame 21 and located at the non-pin end of the sensor body 3, and a push plate 222 provided with an avoiding groove 223 opened on the end face and located close to the pin of the sensor body 3, the abutting blocks 221 and the push plate 222 in the same supporting frame 21 are synchronously close under the driving of the driving piece 12, thereby realizing clamping and limiting of the sensor body 3.

[0042] One end of the supporting frame 21 is designed as an inclined table, a plurality of rotating rollers 211 for reducing sliding friction of the sensor body 3 are connected to the inclined surface of the inclined table along the inclined direction, and the two inner side walls of the supporting frame 21 are both provided with a sliding groove 212 internally and fixedly arranged with a protrusion 213, and the two ends of the protrusion 213 are both provided with a chamfer.

[0043] The inside of the sliding groove 212 is slidingly arranged with an auxiliary block 214, the side of the auxiliary block 214 close to the sensor body 3 is provided with a clamping block 215 slidingly penetrating the auxiliary block 214 and having chamfers opened at both ends corresponding to the positions of the protrusions 213, and the inclined surface of the protrusion 213 is in close contact with the inclined surface of the clamping block 215.

[0044] The driving piece 12 comprises two transmission gears 121 rotatably arranged on the lower end surface of the mounting frame and located inside the accommodating groove 111, the two transmission gears 121 are jointly arranged with a double-sided gear 122 slidingly connected with the mounting disc 11, and the ends of the two transmission gears 121 away from each other are also arranged with transmission racks 123 slidingly connected with the side walls of the accommodating groove 111, the two abutting blocks 221 are respectively connected downward with the corresponding transmission racks 123, and the push plate 222 is connected with the double-sided gear through a connecting block slidingly penetrating the mounting frame.

[0045] The limiting piece 22 further comprises two stop blocks 224 slidingly arranged inside the mounting frame and used for blocking the sensor body 3, the side of the stop block 224 close to the sensor body 3 is provided with a rectangular groove, and the elastic block 225 in close contact with the sensor body 3 is connected through a compression spring and located inside the rectangular groove.

[0046] The leveling component 23 includes a sleeve 231 that is slidably disposed inside the support frame 21 and corresponds to the number of pins of the sensor body 3. One end of the sleeve 231 is provided with three clamping plates 232 via torsion springs. Several semi-circular contact blocks 233 are fixedly disposed on the side of the clamping plates 232 near the pins of the sensor body 3 along the arc direction. The lower ends of the sleeves 231 are all connected to a square plate through a strip block of the push plate 222 and the support frame 21.

[0047] The outer wall of the sleeve 231 is fitted with a semi-circular ring 234 with a chamfered inner wall. The lower end of the semi-circular ring 234 is slidably disposed inside the relief groove 223 by a support block 235. The end face of the support block 235 is provided with a magnet, and the support block 235 is magnetically connected to the inner wall of the relief groove 223 by the magnet.

[0048] Inside the guide groove 113, at the position corresponding to the double-sided rack, there is a linkage rod 114 that always slides inside it. The linkage rod 114 is connected upward to the corresponding double-sided rack.

[0049] In actual operation, the clamping and limiting action of the sensor body 3 is as follows:

[0050] During the pin soldering process of sensor body 3, the uneven force applied to sensor body 3 and the lead wire to be soldered at both ends leads to uneven contact between the pins and the lead wire. This uneven contact causes the soldering point between the pins and the lead wire of sensor body 3 to be skewed, resulting in poor soldering and desoldering, and ultimately affecting the normal operation and service life of the sensor after soldering. The contact force uniformity calibration platform of the soldering fixture for the array sensor pins is provided with a stop block 221 and a push plate 222 on the same support frame 21. The stop block 221 and the push plate 222 on the same support frame 21 can achieve clamping and limiting of sensor body 3 in cooperation with the drive component 12, ensuring that it will not be skewed due to uneven force before soldering.

[0051] Specifically, the sensor body 3 is first placed into the corresponding support bracket 21 along the placement area of ​​the mounting plate 11 (the mounting plate 11 has four receiving slots 111, and the support bracket 21 is fixedly connected to each of the four receiving slots 111 respectively. The support bracket 21 at different positions is divided into different processing areas. Specifically, the guide groove 113 on the adjustment plate 112 is heart-shaped. The support bracket 21 located in the recessed part of the heart-shaped guide groove 113 serves as the placement area of ​​the sensor body 3, while the support bracket 21 opposite to the placement area serves as the processing area of ​​the sensor body 3. The other two support brackets 21 serve as the preparation area of ​​the sensor body 3).

[0052] The end of the supporting frame 21 is designed as an inclined table, and two inclined plates are fixedly arranged on the inclined table, the closer to the inclined table, the smaller the angle of the inclined plate. The sensor body 3 will first pass through the two inclined plates during placement, and will be adjusted to enter the position of the supporting frame 21 under the action of the gradually decreasing angle of the two inclined plates, so as to ensure that the sensor body 3 will not be skewed during placement. Through the design of the inclined table, when placing the sensor body 3, it is not necessary to exert excessive pushing force on it (if a flat design is adopted, in order to ensure that the sensor body 3 moves to the specified position during placement, it is necessary to exert a pushing force on it, and excessive pushing force will cause the sensor body 3 to be squeezed and collided with other parts during movement along the supporting frame 21, thereby causing damage to the sensor body 3, and insufficient pushing force cannot ensure that the sensor body 3 moves to the specified position), and it is only necessary to place the sensor body 3 along the inclined table and let it slide down freely. In this process, the several rotating rollers 211 rotatingly arranged on the inclined surface of the inclined table effectively reduce the friction between the sensor body 3 and the supporting frame 21 during sliding, thereby improving the smoothness and continuity of the sensor body 3 during placement.

[0053] After the sensor body 3 is separated from the inclined table, the end away from the inclined table will be in contact with the stop block 224 arranged on the supporting frame 21. The stop block 224 and the elastic block 225 are arranged to block and preliminarily position the sensor body 3.

[0054] After the sensor body 3 is preliminarily positioned, the mounting disc 11 is driven to rotate by an external driving assembly. During rotation of the supporting frame 21 following the mounting disc 11, the linkage rod 114 slides along the heart-shaped guide groove 113 and synchronously moves the double-sided rack. In this process, the double-sided rack synchronously engages the two transmission gears 121, so that the two transmission gears 121 respectively drive the corresponding transmission racks 123 to move (by rotating the mounting disc 11, the synchronous approaching work of the abutting blocks 221 and the push plates 222 is realized. Specifically, the linkage rod 114 is always slidingly arranged in the guide groove 113, and the other end of the linkage rod 114 penetrates the mounting disc 11 and is fixedly connected with the double-sided rack, and the other end of the double-sided rack is connected with the push plate 222 upward. When the linkage rod 114 gradually moves outward along the guide groove 113, the double-sided rack slides along the containing groove 111 and synchronously engages the two transmission racks 123, and drives the two transmission racks 123 to synchronously rotate. The two transmission racks 123 engage the corresponding transmission racks 123 to move during rotation. Since the two abutting blocks 221 are respectively connected with the corresponding transmission racks 123, the double-sided rack synchronously approaches the abutting blocks 221 and the push plates 222 during synchronous approaching with the transmission racks 123, and the abutting blocks 221 and the push plates 222 also synchronously approach and realize the clamping and positioning work of the two ends of the sensor body 3.

[0055] It should be noted that the abutting block 221 is designed as a telescopic member, and a guide rod (not shown in the drawings) is fixedly arranged on the telescopic section thereof. The two side walls of the sliding groove on the supporting frame 21 for the sliding of the abutting block 221 are provided with waist-shaped grooves with gradually increasing height corresponding to the position of the guide rod. The two ends of the guide rod are always located inside the two waist-shaped grooves. In the initial state, the guide rod of the telescopic section of the abutting block 221 is located at the bottom end of the waist-shaped groove. The purpose is to avoid the blocking of the abutting block 221 during the sliding of the sensor body 3. When the abutting block 221 is gradually slid along the sliding groove under the driving of the transmission rack 123, the guide rod gradually extends out and is higher than the lower end surface of the sensor body 3 under the driving of the gradually increasing height of the waist-shaped groove, thereby realizing the pushing work of the sensor body 3.

[0056] The elastic block 225 is designed of rubber material. The purpose is that the elastic block 225 of rubber material is always attached to the sensor body 3 during the movement of the blocking block 224 following the sensor body 3, thereby avoiding the problem of direct rigid contact between the push plate 222 and the sensor body 3 and causing injury.

[0057] The two side auxiliary blocks 214 penetrate the supporting frame 21 downward and are connected with the corresponding transmission rack 123 (not shown in the drawings). During the pushing of the sensor body 3 by the abutting block 221, the auxiliary block 214 and the clamping block 215 also slide along the sliding groove 212. During the sliding of the clamping block 215, the chamfer formed therein cooperates with the chamfer formed in the convex block 213, so that the clamping block 215 gradually extends out and is attached to the side wall of the sensor body 3 during the extension process. Thus, the clamping and limiting work of the side wall of the sensor body 3 is completed. (The side of the clamping block 215 close to the sensor body 3 is fixedly provided with rubber clamping blocks with a plurality of recesses formed therein. The purpose is to increase the friction with the side wall of the sensor body 3 and avoid injury. The side wall of the auxiliary block 214 away from the sensor body 3 is connected with the side wall of the sliding groove 212 through a plurality of rollers. Through the design of the rubber clamping block, the stability of the clamping work of the side wall of the sensor body 3 is improved, and the rotation of the roller reduces the friction between the sensor body 3 and the supporting frame 21 during the movement, thereby improving the smoothness of the sensor body 3 during the movement.

[0058] Flattening of the pins of the sensor body 3 and welding with the lead wire:

[0059] The pin of the sensor body 3 will bend when subjected to external force due to its low hardness, and during the welding of the pin of the sensor body 3 with the lead wire, the bent pin will contact the lead wire, which will cause the welding point to be unstable due to uneven contact. Based on this, the welding clamp contact force equalization calibration platform of the array sensor pin is provided with a flattening piece 23, which can realize the flattening work of the sensor body 3 pin before welding, ensure uniform contact before welding, avoid unstable welding, and thus improve the quality of the welding work of the sensor body 3 pin with the lead wire.

[0060] Specifically, three clamping plates 232 are provided on the sleeve 231 by a torsional spring, and in the initial state, the three clamping plates 232 are simultaneously expanded outward and present a horn shape under the action of the torsional spring force. When the sensor body 3 slides into the inside of the support frame 21, its pin will pass through the three horn-shaped clamping plates 232 and enter the inside of the sleeve 231, and the clamping plates 232 and the sleeve 231 are arranged to realize the preliminary calibration of the pin of the sensor body 3. Then, when the push plate 222 and the stop block 221 simultaneously approach to realize the abutting limiting work of the sensor body 3, since the semicircular ring 234 is magnetically connected to the push plate 222 through the support block 235, the semicircular ring 234 will move with the push plate 222 and realize the synchronous tightening work of the three clamping plates 232, and finally make the contact blocks 233 arranged on the three clamping plates 232 fit the outer wall of the pin (in the initial state, the semicircular ring 234 is sleeved on the outer wall of the sleeve 231, so it will not block the entry of the pin. With the movement of the push plate 222, the semicircular ring 234 gradually moves along the sleeve 231, and through the contact between its inner wall and the outer wall of the clamping plate 232, the three clamping plates 232 are simultaneously close to the semicircular ring 234 under the abutting action of the inner wall of the semicircular ring 234, and the diameter of the clamping plate 232 gradually increases from the side close to the sleeve 231 to the side away from the sleeve 231. Therefore, after the push plate 222 moves to the specified position, the three clamping plates 232 also complete the clamping and limiting work of the pin under the abutting action of the inner wall of the semicircular ring 234. The side of the clamping plate 232 close to the pin is provided with a plurality of semicircular contact blocks 233 in an arc direction, and adjacent two contact blocks 233 are provided with a spacing. The purpose is not only to increase the contact area with the pin through the plurality of contact blocks 233, but also to meet the pins of different shapes through the design of the semicircular contact blocks 233, thereby improving the diversity of the pin flattening work. The three clamping plates 232 arranged on the same sleeve 231 realize the clamping of the pin, and cooperate with the stop block 221 and the push plate 222 and the rubber clamping blocks on both sides to realize the limiting work of the sensor body 3 in multiple directions, so as to ensure that the sensor body 3 will not be positionally offset by external force before welding, and lay a foundation for the uniform contact surface of the pin and the lead wire in the subsequent process.

[0061] With the support frame 21 moving to the processing area, the sensor body 3 and the clamping limit work of the pin are also completed synchronously, and then the square plate (not shown in the drawings) is pushed by the external electric push rod, and the sleeve 231 and the clamping plate 232 arranged thereon are synchronously moved under the driving of the square plate, and in this process, the pin is flattened by the contact block 233 (the semicircular ring 234 is sleeved on the outer wall of the clamping plate 232, and the limit work with the clamping plate 232 is realized by the outward expansion force of the torsion spring. The blocking plate is fixedly arranged on the clamping plate 232, which not only avoids that the semicircular ring 234 moves excessively to separate from the clamping plate 232, but also synchronously drives the semicircular ring 234 to move during the movement of the clamping plate 232, so that the contact block 233 is always in contact with the pin, and finally the flattening work of the pin is completed).

[0062] After the pin is flattened, the corresponding number of lead wires is placed on the upper surface of the pin by the external wire feeding device, and finally the welding of the pin and the lead wire is completed by the welding device.

[0063] It should be noted that after the welding is completed, the support frame 21 is gradually released from the limiting of the sensor body 3 during the rotation of the mounting disc 11 by cooperating with the linkage rod 114 and the guide groove 113, and finally the sensor body 3 after welding is taken out by moving to the placement area. Different working areas are arranged on the mounting disc 11, and the purpose is that as the mounting disc 11 rotates, the sensor body 3 to be welded is always moved to the welding area, the switching work of the sensor body 3 after welding and the sensor body 3 not welded is completed by the welding gap, so as to improve the continuity of the whole welding work and avoid the occurrence of the work gap period.

[0064] It is worth emphasizing that the welding fixture contact force uniformization calibration platform of the array sensor pin mainly has the following advantages:

[0065] Advantage one, during the rotation of the support frame 21 following the mounting disc 11, the linkage rod 114 will slide along the guide groove 113 in the shape of a heart, and during the sliding process, the double-sided rack and the push plate 222 are synchronously moved, and in this process, the double-sided rack synchronously engages the two transmission gears 121, so that the two transmission gears 121 respectively drive the corresponding transmission racks 123 and the abutting block 221 to move. The abutting block 221 and the push plate 222 realize the clamping and limiting work of the two ends of the sensor body 3 during the synchronous approach, so as to avoid the inclination of the sensor body 3 due to uneven stress before welding, and lay a foundation for the uniform contact of the pin and the lead wire.

[0066] The second advantage is that the auxiliary block 214 and the clamping block 215 also slide along the sliding groove 212 during the pushing of the sensor body 3 by the block 221, and during the sliding of the clamping block 215, the chamfer formed in the clamping block 215 cooperates with the chamfer formed in the convex block 213, so that the clamping block 215 gradually extends out and fits the side wall of the sensor body 3 during the extension, the side of the clamping block 215 close to the sensor body 3 is fixedly provided with a rubber clamping block with a plurality of recesses, which is to increase the friction with the side wall of the sensor body 3 and avoid the problem of pinching, and the side wall of the auxiliary block 214 away from the sensor body 3 is connected with the side wall of the sliding groove 212 through a plurality of rollers, the design of the rubber clamping block not only improves the stability of the clamping work on the side wall of the sensor body 3, but also reduces the friction between the sensor body 3 and the support frame 21 during the movement of the sensor body 3 through the rotation of the rollers, thereby improving the smoothness of the sensor body 3 during the movement.

[0067] The third advantage is that when the sensor body 3 slides into the support frame 21, the pins of the sensor body 3 pass through the three clamping plates 232 in the shape of a horn into the sleeve 231, and the clamping plates 232 and the sleeve 231 are provided to realize the preliminary calibration of the pins of the sensor body 3, and then when the push plate 222 and the block 221 are close to realize the abutting limiting of the sensor body 3, since the semicircular ring 234 is magnetically connected with the push plate 222 through the supporting block 235, the semicircular ring 234 moves with the push plate 222 and realizes the synchronous tightening of the three clamping plates 232, so that the contact blocks 233 provided on the three clamping plates 232 fit the outer wall of the pins, and before welding, the square plate is pushed by an external electric push rod, the sleeve 231 and the clamping plates 232 provided thereon are driven by the square plate to move synchronously, and in this process, the plurality of contact blocks 233 realize the straightening work of the curved pins, so as to avoid the phenomenon that the uneven contact surface of the pins leads to the unstable welding point.

[0068] The fourth advantage is that one end of the support frame 21 is designed as an inclined table, and two inclined plates with smaller inclination angles closer to the inclined table are fixedly arranged on the inclined table, the sensor body 3 will first pass through the two inclined plates during placement, and the position of the sensor body 3 in the support frame 21 is adjusted under the action of the gradually decreasing angles of the two inclined plates, so as to ensure that the sensor body 3 will not be skewed during placement, and through the design of the inclined table, when placing the sensor body 3, it is not necessary to apply too much pushing force, but only to place the sensor body 3 along the inclined table and let it slide down freely, in this process, the plurality of rotating rollers 211 rotatingly arranged on the inclined surface of the inclined table effectively reduce the friction between the sensor body 3 and the support frame 21 during sliding, thereby improving the smoothness and continuity of the sensor body 3 during placement.

[0069] The fifth advantage is that the installation disc 11 is provided with different work areas, and the purpose is that the sensor body 3 to be welded is always moved to the welding area with the rotation of the installation disc 11, the welding gap is completed, and the switching work of the un-welded sensor body 3 is completed, so that the continuity of the whole welding work is improved, and the work gap period is avoided.

[0070] The above examples are only used to illustrate the technical solutions of the present application, but not limit it; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can be modified, or some technical features can be replaced by equivalents; and these modifications or replacements will not make the essence of the corresponding technical solutions deviate from the protection scope of the technical solutions of the embodiments of the present application.

Claims

1. A calibration platform for uniformizing contact force of welding fixtures for array sensor pins, characterized in that, include: The base (1) is rotatably connected to an external drive unit and has four receiving slots (111) on its end face along the circumferential direction. The four receiving slots (111) are respectively provided with drive components (12). The execution component (2) is provided with four parts and is distributed on the upper surface of the mounting plate (11) corresponding to the positions of the receiving slots (111); The execution component (2) includes a support frame (21) with a U-shaped cross-section disposed on the receiving groove (111). The sensor body (3) is placed inside the support frame (21). The support frame (21) is provided with a limiting member (22) and a smoothing member (23) at both ends of the sensor body (3) for clamping and aligning the sensor body (3). The limiting member (22) includes two sliding through support brackets (21) and abutments (221) located at the non-pin end of the sensor body (3). A push plate (222) with an end face clearance groove (223) is provided on the side near the pin of the sensor body (3). The abutments (221) and push plates (222) inside the same support bracket (21) move closer to each other synchronously under the drive of the driving member (12), thereby realizing the clamping and limiting work of the sensor body (3).

2. The contact force uniformity calibration platform for welding fixtures of array sensor pins according to claim 1, characterized in that: The support frame (21) adopts a ramp design at one end. The ramp is rotatably connected to several rollers (211) to reduce the sliding friction of the sensor body (3) along its inclined direction. The two inner side walls of the support frame (21) are provided with grooves (212) with protrusions (213) fixed inside. Both ends of the protrusions (213) are chamfered.

3. The contact force uniformity calibration platform for welding fixtures of array sensor pins according to claim 2, characterized in that: An auxiliary block (214) is slidably arranged inside the groove (212). A sliding through auxiliary block (214) is provided on the side of the auxiliary block (214) close to the sensor body (3), and chamfered clamping blocks (215) are also provided at both ends corresponding to the protrusions (213). The inclined surface of the protrusions (213) is in contact with the inclined surface of the clamping blocks (215).

4. The contact force uniformity calibration platform for welding fixtures of array sensor pins according to claim 1, characterized in that: The drive unit (12) includes two transmission gears (121) rotatably disposed on the lower end face of the mounting bracket and located inside the receiving groove (111). The two transmission gears (121) are meshed together with a double-sided gear (122) that is slidably connected to the mounting plate (11). The ends of the two transmission gears (121) that are far apart are also meshed with a transmission rack (123) that is slidably connected to the side wall of the receiving groove (111). Two abutments (221) are respectively connected downward to the corresponding transmission racks (123). The push plate (222) is connected to the double-sided rack through a connecting block that slides through the mounting bracket.

5. The contact force uniformity calibration platform for welding fixtures of array sensor pins according to claim 1, characterized in that: The limiting member (22) also includes two blocks (224) that are slidably disposed inside the mounting bracket and used to block the sensor body (3). The blocks (224) have a rectangular groove on the side near the sensor body (3) and are connected to an elastic block (225) that fits against the sensor body (3) by a compression spring inside the rectangular groove.

6. The contact force uniformity calibration platform for welding fixtures of array sensor pins according to claim 1, characterized in that: The smoothing component (23) includes a sleeve (231) that is slidably disposed inside the support frame (21) and corresponds to the number of pins of the sensor body (3). One end of the sleeve (231) is provided with three clamps (232) via torsion springs. Several semi-circular contact blocks (233) are fixedly disposed on the side of the clamps (232) near the pins of the sensor body (3) along the arc direction. The lower ends of several sleeves (231) are all connected to a square plate through a strip block that passes through the push plate (222) and the support frame (21).

7. The contact force uniformity calibration platform for welding fixtures of array sensor pins according to claim 6, characterized in that: The outer wall of each sleeve (231) is fitted with a semi-circular ring (234) with a chamfered inner wall. The lower ends of the semi-circular rings (234) are slidably disposed inside the relief groove (223) by support blocks (235). The end face of the support block (235) is provided with a magnet, and the support block (235) is magnetically connected to the inner wall of the relief groove (223) by the provided magnet.

8. The contact force uniformity calibration platform for welding fixtures of array sensor pins according to claim 4, characterized in that: An adjustment plate (112) with a guide groove (113) on its end face is fixedly provided between the mounting plate (11) and the base (1). Inside the guide groove (113), a linkage rod (114) is provided at the position corresponding to the double rack, which always slides inside. The linkage rod (114) is connected upward to the corresponding double rack.

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