A terminal crimping jig for thermocouple wires

Abstract

The utility model discloses a kind of hot-wire terminal crimping jigs, mainly solve the technical problems of low hot-wire terminal crimping efficiency, unstable quality and unable to verify crimping effect in prior art.It includes base, Y-axis stroke adjusting mechanism, slider fixed seat, crimping cylinder mechanism, riveting punch and hanging pound testing device.Accurate positioning is realized by Y-axis stroke adjusting mechanism and slider fixed seat cooperation, crimping cylinder mechanism controls crimping depth, and hanging pound testing device verifies crimping strength.The present application can significantly improve hot-wire terminal crimping efficiency and quality stability, while having crimping effect verification function, suitable for a variety of specifications terminals, and provide reliable technical support for temperature rise test.

Description

Technical Field

[0001] This utility model belongs to the field of thermocouple terminal crimping technology, specifically, it relates to a thermocouple terminal crimping fixture. Background Technology

[0002] With the increasing prevalence of smart homes and the growing demand for the Internet of Things (IoT), the performance requirements for network transmission terminal equipment such as routers and switches are rising. Performance improvements are often accompanied by increased product power and heat generation, making temperature rise testing an indispensable part of the product development stage. In temperature rise testing, thermocouple wires, as key temperature measurement tools, require a crimped terminal block at the end connected to the multi-channel temperature meter to ensure the accuracy and reliability of the measured temperature data. However, currently, the crimping of thermocouple wire terminals is generally done using ordinary needle-nose pliers, a method with several problems that urgently need to be addressed.

[0003] In existing technologies, using ordinary needle-nose pliers for terminal crimping lacks a precise positioning device, requiring skilled operators and making the crimping position prone to deviations due to human error. Furthermore, maintaining consistent pressure during crimping leads to inconsistent crimping quality, affecting the accuracy of temperature rise test results. A more significant problem is that traditional methods cannot verify the crimping effect of the terminals, making it difficult to guarantee that the crimping strength meets usage requirements, further increasing the uncertainty of subsequent test data. These issues not only reduce production efficiency but may also lead to material waste and increased production costs. Therefore, developing a specialized fixture that improves the efficiency and quality stability of thermocouple wire terminal crimping has become a pressing technical challenge for the industry. Utility Model Content

[0004] The purpose of this utility model is to provide a thermocouple terminal crimping fixture, which mainly solves the technical problems of low crimping efficiency, unstable quality and inability to verify the crimping effect of thermocouple terminals in the prior art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A thermocouple wire terminal crimping fixture includes a base, a Y-axis stroke adjustment mechanism disposed on the base, a slider fixing seat disposed on the base and slidably connected to the Y-axis stroke adjustment mechanism, a crimping cylinder mechanism fixed to the Y-axis stroke adjustment mechanism, and a riveting punch connected to the crimping cylinder mechanism for crimping thermocouple wires and terminals placed on the slider fixing seat.

[0007] Furthermore, in this utility model, the Y-axis travel adjustment mechanism includes two support plates fixed on the base, a limiting screw fixing plate fixed on the base and whose two ends are connected to the two support plates to form a slider fixing seat installation space, a limiting screw hole opened in the center of the limiting screw fixing plate, a fixing seat limiting screw threaded into the limiting screw hole, and a sliding groove opened on the bottom of the support plate facing the slider fixing seat installation space.

[0008] Furthermore, in this utility model, the bottom sides of the slider fixing seat are provided with sliding bosses that match the sliding groove, and the upper end of the slider fixing seat is provided with a terminal fixing groove.

[0009] Furthermore, in this utility model, the pressing cylinder mechanism includes a supporting horizontal plate fixed to the supporting vertical plate, and an adjustable pressure-stabilizing cylinder fixed to the supporting horizontal plate by fastening screws; wherein, the center of the supporting horizontal plate is provided with a through hole for the cylinder rod of the adjustable pressure-stabilizing cylinder to pass through.

[0010] Furthermore, in this utility model, the adjustable pressure-stabilizing cylinder includes a cylinder body fixed to a support plate, an air pipe connector disposed on the side of the cylinder body, a cylinder punch rod connected to the cylinder body and passing through a through hole, a cylinder lead screw disposed on the upper end of the cylinder body and connected to the cylinder punch rod, a cylinder stroke limit nut mounted on the cylinder lead screw, and a start button disposed on the cylinder body; wherein, the riveting punch is sleeved on the lower end of the cylinder punch rod.

[0011] Furthermore, in this utility model, the riveting punch includes a fixing rod sleeved on the cylinder punch rod and laterally locked in place by a rivet screw, and a punch connected to the fixing rod.

[0012] Furthermore, in this utility model, the back of the slider fixing seat is provided with an interference fit magnet corresponding to the position of the fixing seat limit screw.

[0013] Furthermore, the present invention also includes a hanging scale testing device disposed on the base. The hanging scale testing device includes a weight storage slot fixed on the base, multiple hanging scale weights of different weight grades placed in the weight storage slot, a silicone clip head interference fit into the hanging scale weights, a V-shaped clip head disposed on the silicone clip head, a hanging scale clip slot disposed on one side end of the base, and a stop block disposed on the end face of the hanging scale clip slot to prevent the terminal from slipping out.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] (1) This utility model achieves precise positioning of the slider fixing seat through the Y-axis stroke adjustment mechanism (sliding groove and sliding boss cooperation), and combined with the pressing cylinder mechanism (adjustable pressure stabilizing cylinder automatically controls the pressing action), reduces the reliance on manual operation and significantly improves the pressing efficiency.

[0016] (2) The Y-axis stroke adjustment mechanism of this utility model locks the position by fixing the seat limit screw and magnet adsorption to avoid the crimping position deviation; the crimping cylinder mechanism adjusts the crimping depth by the cylinder stroke limit nut to ensure that the crimping force is consistent each time, which solves the problem of unstable quality caused by uneven force in traditional manual crimping.

[0017] (3) This utility model adds a hanging scale testing device (including hanging scale weights of different masses, silicone clips and V-shaped slots), which can observe whether the terminals fall off by suspending the weights, directly verify the crimping strength, and ensure that the crimping effect meets the usage requirements.

[0018] (4) The terminal fixing groove size of the slider fixing seat of this utility model can be replaced according to different specifications of thermocouple wire terminals. Combined with the Y-axis stroke adjustment range and cylinder stroke adjustment function, it can adapt to various terminal crimping requirements and reduce production costs. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the exploded structure of this utility model.

[0020] Figure 2 This is a schematic diagram of the assembly structure of this utility model.

[0021] Figure 3 This is a cross-sectional structural diagram of the present invention.

[0022] Figure 4 This is a diagram showing the usage status of the hanging scale testing device in this utility model.

[0023] The names corresponding to the reference numerals in the attached figures are as follows:

[0024] 1. Base; 2. Y-axis travel adjustment mechanism; 3. Slider fixing seat; 4. Crimping cylinder mechanism; 5. Riveting punch; 6. Hanging scale testing device; 7. Magnet; 8. Thermocouple wire; 9. Terminal; 20. Support plate; 21. Slider fixing seat installation space; 22. Limit screw fixing plate; 23. Limit screw hole; 24. Fixing seat limit screw; 25. Sliding groove; 30. Sliding boss; 31. Terminal fixing groove; 4 0. Support plate; 41. Adjustable pressure-stabilizing cylinder; 42. Cylinder punch; 43. Through hole; 44. Cylinder body; 45. Air pipe connector; 46. Cylinder lead screw; 47. Cylinder stroke limit nut; 48. Start button; 51. Fixing rod; 52. Punch; 53. Measuring screw; 61. Weight storage slot; 62. Hanging scale weight; 63. Silicone clip; 64. V-shaped slot; 65. Hanging scale slot; 66. Stop block. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments. The embodiments of the present invention include, but are not limited to, the following embodiments.

[0026] Example

[0027] like Figures 1-4 As shown, this utility model discloses a thermocouple terminal crimping fixture, the main structure of which includes a base 1, a Y-axis stroke adjustment mechanism 2, a slider fixing seat 3, a crimping cylinder mechanism 4, a riveting punch 5, and a hanging scale testing device 6. Through reasonable mechanical design and optimized configuration of functional modules, these components achieve efficient, stable, and multifunctional thermocouple terminal crimping operations.

[0028] In this embodiment, the base 1 serves as the fundamental component of the entire fixture, and it is provided with multiple screw through holes for fixing the fixture to the workbench surface, ensuring overall stability during the crimping process. The base 1 also includes a weight storage slot 61, a hanging scale slot 65, and a stop block 66. The weight storage slot 61 stores the hanging scale weights 62, facilitating quick access for hanging scale testing after crimping. The hanging scale slot 64 is located on the side of the base 1 and is used to engage the crimped thermocouple wire terminals. The stop block 66 is located on the end face of the hanging scale slot 64 to prevent the terminals 9 from slipping off during testing. This design makes the fixture more convenient and fully functional during use, while also improving operational safety and reliability.

[0029] The Y-axis travel adjustment mechanism 2 includes two support plates 20, a limit screw fixing plate 22, a slider fixing seat mounting space 21, a limit screw hole 23, a fixing seat limit screw 24, and a sliding groove 25. The support plates 20 are fixed to the base 1 and together with the limit screw fixing plate 22 form the slider fixing seat mounting space 21. The limit screw fixing plate 22 has a limit screw hole 23 in its center. The fixing seat limit screw 24 is threaded into the limit screw hole 23, and its screwing depth controls the position adjustment range of the slider fixing seat 3 in the Y-axis direction. The sliding groove 25 is located on the bottom side of the support plate 20 facing the slider fixing seat mounting space and matches the sliding bosses 31 on both sides of the bottom of the slider fixing seat 3, realizing the sliding adjustment of the slider fixing seat 3 in the Y-axis direction. In particular, a magnet 7 is interference-fitted on the back of the slider fixing seat 3. The magnet 7 attracts the fixing seat limit screw 24 to improve the stability of the position locking. This design not only realizes the precise position adjustment of the slider fixing seat 3, but also effectively avoids position displacement caused by external vibration.

[0030] The slider holder 3 has sliding bosses 30 on both sides of its bottom. These bosses 30 match the sliding grooves 25, enabling precise sliding adjustment of the slider holder 3 in the Y-axis direction. A terminal fixing groove 31 is provided at the upper end of the slider holder 3 for fixing the thermocouple wire terminal to be crimped. The size of the terminal fixing groove 31 of the slider holder 3 can be changed according to different specifications of thermocouple wire terminals to adapt to various terminal crimping requirements. For example, when crimping thermocouple wire terminals of different specifications, simply replacing the terminal fixing groove 31 with a suitable size completes the adaptation. This design significantly improves the versatility of the fixture, enabling it to meet diverse production needs.

[0031] The pressing cylinder mechanism 4 includes a support plate 40, an adjustable pressure-stabilizing cylinder 41, a cylinder rod 42, a through hole 43, a cylinder body 44, an air pipe connector 45, a cylinder lead screw 46, a cylinder stroke limit nut 47, and a start button 48. The support plate 40 is fixed to the support upright plate 20 with fastening screws, and has a through hole 43 in its center for the cylinder rod 42 to pass through. The adjustable pressure-stabilizing cylinder 41 is fixed to the support plate 40 with fastening screws. An air pipe connector 45 is located on the side of the cylinder body 44 for connecting to an external air source. The cylinder rod 42 is connected to the cylinder lead screw 46, and the cylinder lead screw 46 is equipped with a cylinder stroke limit nut 47 for adjusting the stroke of the cylinder rod 42 in the Z-axis direction. The start button 48 is located on the cylinder body 44 to trigger the cylinder action. By adjusting the cylinder stroke limit nut 47, the crimping depth of the cylinder punch 42 can be precisely controlled, thereby ensuring consistent force in each crimping operation. This design solves the problem of inconsistent quality caused by uneven force in traditional manual crimping.

[0032] The riveting punch 5 includes a fixing rod 51 and a punch 53. The fixing rod 51 is sleeved on the lower end of the cylinder punch rod 42 and is laterally locked and fixed by a mortise screw 53. The punch 51 is aligned with the terminal fixing groove 31 of the slider fixing seat 3 to complete the riveting operation of the thermocouple wire terminal. Furthermore, the relative position between the punch part of the riveting punch 5 and the terminal fixing groove 31 can be precisely controlled by adjusting the cylinder stroke limit nut 47, thereby ensuring the accuracy of the crimping depth. This design not only improves the accuracy of the crimping operation, but also effectively avoids terminal damage or poor crimping caused by improper crimping depth.

[0033] The hanging scale testing device 6 includes a weight storage slot 61, a hanging scale weight 62, a silicone clamp 63, a V-shaped groove 64, a hanging scale groove 65, and a stop 66. The hanging scale weight 62 has an interference-fit silicone clamp 63, which has a V-shaped groove 64 for holding the thermocouple wire 8 and applying a constant tensile force. The hanging scale groove 65 is located on the side of the base 1 and is used to engage the crimped thermocouple wire terminal. The stop 66 prevents the terminal 9 from slipping off during the test. In actual operation, the hanging scale testing process is as follows: First, the crimped thermocouple wire terminal is engaged in the hanging scale groove 65. Then, a suitable weight is taken from the hanging scale weight 62, and the V-shaped groove 64 on the silicone clamp 63 is engaged in the thermocouple wire 8, maintaining a suspended state. After a limited time, the thermocouple wire terminal is observed to see if it has fallen off, thus verifying the crimping strength. This design makes the verification process of crimping strength more convenient and reliable, and also provides important technical support for temperature rise testing.

[0034] The working principle of this utility model is as follows: S1, fix the fixture to the workbench through the screw through hole on the base 1 to ensure overall stability; S2, put the thermocouple wire 8 to be crimped into the terminal 9 and place it in the terminal fixing groove 31 of the slider fixing seat 3; S3, adjust the position of the slider fixing seat 3 in the Y-axis direction by the fixing seat limit screw 24, and lock the position by the attraction of the magnet 7; S4, adjust the cylinder stroke limit nut 47 to control the crimping depth of the cylinder punch 42 in the Z-axis direction; S5, press the start button 48, and complete the crimping operation of the thermocouple wire terminal by the interaction between the riveting punch 5 and the terminal fixing groove 31 of the slider fixing seat 3. The hanging scale test process is as follows: S6, insert the crimped thermocouple wire terminal into the hanging scale slot 65, and take a hanging scale weight 62 of appropriate weight; S7, insert the V-shaped slot 64 on the silicone clip 63 into the thermocouple wire 8 and keep it suspended; S8, after a limited time, observe whether the thermocouple wire terminal falls off, thereby verifying the crimping strength.

[0035] In practical applications, this invention is suitable for temperature rise testing in fields such as smart homes and IoT devices. For example, during the R&D phase of routers or switches, it is necessary to test the temperature rise of the thermocouple wires inside the device. In this case, using the thermocouple wire terminal crimping fixture provided by this invention, the crimping operation of the thermocouple wire terminals can be completed quickly, and the crimping strength can be verified using a hanging scale testing device. This design not only significantly improves crimping efficiency but also ensures the consistency of crimping quality, solving the problem of inaccurate positioning in traditional manual crimping.

[0036] Furthermore, the overall structure of this utility model is compact and reasonable, facilitating processing and daily maintenance. For example, the size of the terminal fixing groove 31 of the slider fixing seat 3 can be replaced according to different specifications of thermocouple wire terminals. The adjustment range of the Y-axis position of the slider fixing seat 3 is combined with the adjustment range of the cylinder stroke limit nut 47, enabling the fixture to adapt to the crimping requirements of thermocouple wire terminals of various sizes. The overall structure is simple, easy to process and maintain, significantly reducing the cost of use and providing reliable technical support for temperature rise testing.

[0037] The above embodiments are merely one of the preferred embodiments of this utility model and should not be used to limit the scope of protection of this utility model. Any modifications or refinements made to the main design concept and spirit of this utility model that are not of substantial significance, but solve the same technical problem as this utility model, should be included within the scope of protection of this utility model.

Claims

1. A thermocouple wire terminal crimping jig characterized by comprising: It includes a base (1), a Y-axis stroke adjustment mechanism (2) disposed on the base (1), a slider fixing seat (3) disposed on the base (1) and slidably connected to the Y-axis stroke adjustment mechanism (2), a pressing cylinder mechanism (4) fixed on the Y-axis stroke adjustment mechanism (2), and a riveting punch (5) connected to the pressing cylinder mechanism (4) for pressing the thermocouple wire (8) and terminal (9) placed on the slider fixing seat (3).

2. The hot-wire terminal crimping jig according to claim 1, characterized by The Y-axis travel adjustment mechanism (2) includes two support plates (20) fixed on the base (1), a limiting screw fixing plate (22) fixed on the base (1) and connected to the two support plates (20) at both ends to form a slider fixing seat installation space (21), a limiting screw hole (23) opened in the center of the limiting screw fixing plate (22), a fixing seat limiting screw (24) threaded into the limiting screw hole (23), and a sliding groove (25) opened on the bottom of the support plate (20) facing the slider fixing seat installation space (21).

3. The terminal crimping tool for a thermocouple wire according to claim 2, wherein The bottom sides of the slider fixing seat (3) are provided with sliding bosses (30) that match the sliding groove (25), and the upper end of the slider fixing seat (3) is provided with a terminal fixing groove (31).

4. The thermocouple wire terminal crimping fixture according to claim 3, characterized in that, The pressing cylinder mechanism (4) includes a support horizontal plate (40) fixed on the support vertical plate (20) and an adjustable pressure-regulating cylinder (41) fixed on the support horizontal plate (40) by fastening screws; wherein, the center of the support horizontal plate (40) is provided with a through hole (43) for the cylinder rod (42) of the adjustable pressure-regulating cylinder (41) to pass through.

5. A thermocouple wire terminal crimping fixture according to claim 4, characterized in that, The adjustable pressure-stabilizing cylinder (41) includes a cylinder body (44) fixed on a support plate (40), an air pipe connector (45) disposed on the side of the cylinder body (44), a cylinder punch (42) connected to the cylinder body (44) and passing through a through hole (43), a cylinder lead screw (46) disposed on the upper end of the cylinder body (44) and connected to the cylinder punch (42), a cylinder stroke limit nut (47) mounted on the cylinder lead screw (46), and a start button (48) disposed on the cylinder body (44); wherein, the riveting punch (5) is sleeved on the lower end of the cylinder punch (42).

6. A thermocouple wire terminal crimping fixture according to claim 5, characterized in that, The riveting punch (5) includes a fixing rod (51) sleeved on the cylinder punch rod (42) and fixed laterally by a rivet screw (53), and a punch (52) connected to the fixing rod (51).

7. A thermocouple wire terminal crimping fixture according to claim 6, characterized in that, The slider fixing seat (3) is provided with an interference fit on the back side with a magnet (7) corresponding to the position of the fixing seat limit screw (24).

8. A thermocouple wire terminal crimping fixture according to claim 7, characterized in that, It also includes a hanging scale testing device (6) set on the base (1). The hanging scale testing device (6) includes a weight storage slot (61) fixed on the base (1), multiple hanging scale weights (62) of different quality grades placed in the weight storage slot (61), a silicone clip (63) interference fit in the hanging scale weights (62), a V-shaped slot (64) set on the silicone clip (63), a hanging scale slot (65) opened on one side end of the base (1), and a stop block (66) set on the end face of the hanging scale slot (65) to prevent the terminal (9) from sliding out.

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