Thermistor production pin shearing device

Abstract

The utility model relates to thermal resistance production technical field, and disclose a kind of pin shearing device for thermal resistance production, including base, the base top is fixedly connected with processing platform, the processing platform top is provided with fixed mechanism, the processing platform top left side is provided with shearing mechanism, the fixed mechanism includes fixed plate, the fixed plate is fixedly connected in the processing platform right end top, when using, by the fixed mechanism being set, when needing to shear the excess pin on thermal resistance during thermal resistance production, first, the protection tube part of thermal resistance is inside first limit frame, the junction box part of thermal resistance is held, moves by first hydraulic cylinder and drives second limit frame, and make second limit frame drive moving arm slide inside support frame, make second limit frame slide to inside first limit frame, can fix thermal resistance, two limit frames are all V-shaped design, can be accurately fitted with the appearance of thermal resistance protection tube.

Description

Technical Field

[0001] This utility model relates to the field of resistance temperature detector (RTD) production technology, specifically to a lead cutting device for RTD production. Background Technology

[0002] In the manufacturing process of RTDs, pin processing is a key step to ensure the subsequent assembly accuracy and performance of the RTD. As a commonly used temperature measuring element in the industrial field, the structure of an RTD usually includes a protective tube, a junction box and extended pins. The pins need to be precisely connected to the external circuit, so there are strict requirements for the consistency of pin length and the flatness of the cut.

[0003] Currently, there are still several technical challenges in the cutting of RTD leads in the industry. Some small manufacturers rely on manual hand-held cutting tools, requiring operators to simultaneously fix the RTD and control the cutting force. This not only results in high labor intensity and low production efficiency but also makes it easy for hand tremors to cause deviations in the lead cutting length, making it difficult to meet the uniform dimensional accuracy requirements in mass production. Furthermore, manual operation lacks a stable limiting structure, and the RTD protection tube is prone to slippage during the cutting process, which may cause scratches on the surface of the protection tube, affecting the product's appearance quality and even damaging the internal temperature sensing element, increasing the defect rate.

[0004] According to the patent application published on the Internet, a lead cutting device for producing resistance thermometers (authorization announcement number: CN216176176U) is described as including a "cutting frame, a fixing plate" and other components to perform the cutting operation.

[0005] Regarding the above description, the applicant believes the following issues exist:

[0006] This lead-cutting device for RTD production utilizes a cutting frame and a fixing plate to perform the cutting operation. In use, the RTD is placed in an arc-shaped groove. A second spring in the groove pushes a slider and an arc-shaped lifting plate downwards. During this movement, the arc-shaped lifting plate abuts against the top of the RTD, fixing it in the arc-shaped groove. However, the arc-shaped lifting plate cannot fully contact the outer surface of the RTD, resulting in instability during fixing and affecting the cutting quality. Furthermore, it cannot accommodate RTDs of different sizes, thus requiring improvement. Utility Model Content

[0007] The purpose of this invention is to provide a lead cutting device for the production of resistance thermometers, so as to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a lead cutting device for producing resistance thermometers, comprising a base, a processing table fixedly connected to the top of the base, a fixing mechanism on the top of the processing table, and a cutting mechanism on the left side of the top of the processing table;

[0009] The fixing mechanism includes a fixing plate, which is fixedly connected to the top right end of the processing table. A connecting frame is fixedly connected to the inner side of the fixing plate, and the connecting frame is fixedly connected to the top right end of the processing table. A first limiting frame is fixedly connected to the inner side of the connecting frame. A support frame is fixedly connected to the top of the fixing plate, and a first hydraulic cylinder is fixedly connected to the top of the support frame. A second limiting frame is fixedly connected to the bottom of the first hydraulic cylinder. A connecting seat is fixedly connected to the left side of the fixing plate, and the connecting seat is fixedly connected to the bottom inner side of the left end of the processing table. A fixing cylinder is fixedly connected to the bottom inner side of the connecting seat. A shearing table is slidably connected inside the fixing cylinder, and a fixing shaft is threadedly connected inside the fixing cylinder.

[0010] Preferably, both the first limiting frame and the second limiting frame are V-shaped and have rubber pads on their inner sides. The second limiting frame is slidably connected inside the first limiting frame, which facilitates the fixing of the thermal resistor by the first limiting frame and the second limiting frame.

[0011] Preferably, movable arms are fixedly connected to the front and rear sides of the second limiting frame, and the movable arms are slidably connected inside the support frame to ensure the stability of the movement of the second limiting frame.

[0012] Preferably, the top of the shearing table has a shearing groove, which is rectangular, and the fixing shaft passes through the bottom of the shearing table. The shearing table is located on the left side of the first limiting frame, which facilitates the stability between the shearing table and the fixed cylinder through the fixing shaft.

[0013] Preferably, the shearing mechanism includes a concave frame, which is fixedly connected to the bottom of the inner side of the left end of the processing table. A second hydraulic cylinder is fixedly connected to the top of the concave frame, and a shearing blade is fixedly connected to the bottom of the second hydraulic cylinder. A fixed seat is fixedly connected to the left side of the shearing blade. A slide rod is slidably connected inside the fixed seat. A top plate is fixedly connected to the top of the slide rod, and a pressure plate is fixedly connected to the bottom of the slide rod. A spring is sleeved around the slide rod.

[0014] Preferably, the top of the spring is fixedly connected to the bottom of the top plate, the bottom of the spring is fixedly connected to the top of the fixed base, and the pressure plate is located on the top of the shearing table, so that the spring can provide a buffering effect on the pressure plate.

[0015] Preferably, the shearing blade is slidably connected to the inner side of the concave frame, and the bottom of the shearing blade is slidably connected to the shearing groove, which facilitates the shearing of the pin by the shearing blade.

[0016] Compared with the prior art, this utility model provides a lead cutting device for the production of resistance thermometers, which has the following advantages:

[0017] 1. This lead-cutting device for RTD production, through its fixed mechanism, allows for the cutting of excess leads from RTDs during production. First, the protective tube of the RTD is positioned inside the first limiting frame. Holding the junction box of the RTD, the first hydraulic cylinder moves the second limiting frame, causing it to slide along the support frame. The second limiting frame slides into the first limiting frame, thus fixing the RTD. Both limiting frames are V-shaped, ensuring precise fit with the RTD's protective tube. The inner rubber pads prevent scratches on the RTD surface and increase friction. The fixed cylinder inside the connecting seat slides to the cutting table, and a fixed shaft locks the position. The operator can adjust the height of the cutting table by sliding it up and down according to the RTD lead position, then tighten the fixed shaft to complete the positioning. This device is adaptable to cutting leads from different RTD specifications, greatly improving its versatility and applicability, while also enhancing the cutting quality.

[0018] 2. This lead shearing device for RTD production, through its shearing mechanism, when the RTD is fixed within the first and second limiting frames and the lead to be sheared is located at the top of the shearing table, the second hydraulic cylinder drives the shearing blade to move. When the shearing blade moves, it will drive the fixed seat, slide rod, and pressure plate to move. The pressure plate will first contact the lead on the shearing table. As the shearing blade continues to move downward, the spring is compressed. Under the action of the spring force, the pressure plate applies pre-pressure to the lead, firmly fixing the lead to the top of the shearing table. This can prevent the lead from shifting due to force during the shearing moment until the shearing blade contacts the lead, at which point the shearing work can be performed. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Fig. 1 This is a three-dimensional structural diagram of the present invention;

[0021] Fig. 2 This is a schematic diagram of the right-side structure of this utility model;

[0022] Fig. 3 This is a schematic diagram of the fixed mechanism structure;

[0023] Fig. 4This is a schematic diagram of the inner structure of the support frame;

[0024] Fig. 5 This is a schematic diagram of the inner structure of the connector.

[0025] Fig. 6 This is a schematic diagram of the shearing mechanism.

[0026] In the diagram: 1. Base; 2. Processing table; 3. Fixing mechanism; 4. Shearing mechanism; 31. Fixing plate; 32. Support frame; 33. Connecting frame; 34. Connecting seat; 35. First hydraulic cylinder; 36. First limiting frame; 37. Second limiting frame; 38. Moving arm; 39. Fixed cylinder; 391. Fixed shaft; 392. Shearing table; 41. Concave frame; 42. Second hydraulic cylinder; 43. Fixed seat; 44. Shearing blade; 45. Top plate; 46. Spring; 47. Slide rod; 48. Pressure plate. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] This utility model provides the following technical solution:

[0030] Example 1

[0031] Please see Figs. 1-6 This utility model provides a technical solution: a lead cutting device for producing resistance thermometers, including a base 1, a processing table 2 fixedly connected to the top of the base 1, a fixing mechanism 3 on the top of the processing table 2, and a cutting mechanism 4 on the left side of the top of the processing table 2.

[0032] The fixing mechanism 3 includes a fixing plate 31, which is fixedly connected to the top right end of the processing table 2. A connecting frame 33 is fixedly connected to the inner side of the fixing plate 31. A first limiting frame 36 is fixedly connected to the inner side of the connecting frame 33. A support frame 32 is fixedly connected to the top of the fixing plate 31. A first hydraulic cylinder 35 is fixedly connected to the top of the support frame 32. A second limiting frame 37 is fixedly connected to the bottom of the first hydraulic cylinder 35. A connecting seat 34 is fixedly connected to the left side of the fixing plate 31. The connecting seat 34 is fixedly connected to the bottom inner side of the left end of the processing table 2. A fixing cylinder 39 is fixedly connected to the bottom inner side of the connecting seat 34. A shearing table 392 is slidably connected inside the fixing cylinder 39. A fixing shaft 391 is threadedly connected inside the fixing cylinder 39.

[0033] Both the first limiting frame 36 and the second limiting frame 37 are V-shaped, and rubber pads are provided on their inner sides respectively. The second limiting frame 37 is slidably connected to the inside of the first limiting frame 36, so as to facilitate the fixing of the thermal resistor through the first limiting frame 36 and the second limiting frame 37.

[0034] The second limiting frame 37 is fixedly connected to the front and rear sides with movable arms 38. The movable arms 38 are slidably connected inside the support frame 32, so as to ensure the stability of the movement of the second limiting frame 37 through the movable arms 38.

[0035] The shearing table 392 has a shearing groove on its top and is rectangular. The fixed shaft 391 passes through the bottom of the shearing table 392 and the shearing table 392 is located on the left side of the first limiting frame 36, so that the stability between the shearing table 392 and the fixed cylinder 39 can be ensured by the fixed shaft 391.

[0036] Example 2

[0037] Please see Figs. 1-6 Furthermore, based on Embodiment 1, the shearing mechanism 4 further includes a concave frame 41, which is fixedly connected to the bottom of the inner side of the left end of the processing table 2. A second hydraulic cylinder 42 is fixedly connected to the top of the concave frame 41, and a shearing blade 44 is fixedly connected to the bottom of the second hydraulic cylinder 42. A fixed seat 43 is fixedly connected to the left side of the shearing blade 44. A slide rod 47 is slidably connected inside the fixed seat 43. A top plate 45 is fixedly connected to the top of the slide rod 47, and a pressure plate 48 is fixedly connected to the bottom of the slide rod 47. A spring 46 is sleeved around the slide rod 47.

[0038] The top of the spring 46 is fixedly connected to the bottom of the top plate 45, and the bottom of the spring 46 is fixedly connected to the top of the fixed base 43. The pressure plate 48 is located on the top of the shearing table 392, so that the spring 46 can buffer the pressure plate 48.

[0039] The shearing blade 44 is slidably connected to the inner side of the concave frame 41, and the bottom of the shearing blade 44 is slidably connected to the shearing groove, so as to facilitate the shearing of the pin through the shearing blade 44.

[0040] In actual operation, when this device is used, and when it is necessary to cut off the excess leads on the RTD during the RTD production process, first place the protective tube part of the RTD inside the first limiting frame 36, hold the junction box part of the RTD, and drive the second limiting frame 37 to move through the first hydraulic cylinder 35. The second limiting frame 37 drives the moving arm 38 to slide inside the support frame 32, so that the second limiting frame 37 slides into the first limiting frame 36, thus fixing the RTD. Both limiting frames are V-shaped, which can precisely fit the shape of the RTD protective tube. At the same time, the rubber pads on the inside can not only prevent the surface of the RTD from being scratched, but also increase the friction.

[0041] The fixed cylinder 39 inside the connecting seat 34 is slidably connected to the shearing table 392, and the position is locked by the fixed shaft 391. The operator can adjust the height of the shearing table 392 by sliding it up and down according to the position of the RTD pin, so that the pin can be located at the top of the shearing table 392. After the adjustment is completed, the fixed shaft 391 is tightened to complete the positioning, ensuring the stability between the fixed cylinder 39 and the shearing table 392. It can adapt to the pin shearing operation of RTDs of different specifications, greatly improving the versatility and applicability of the device, while improving the shearing quality.

[0042] At this point, the second hydraulic cylinder 42 can drive the shearing blade 44 to move. When the shearing blade 44 moves, it will drive the fixed seat 43, the slide rod 47 and the pressure plate 48 to move. The pressure plate 48 will first contact the pin on the shearing table 392. As the shearing blade 44 continues to move down, the pressure plate 48 will squeeze the slide rod 47 and the spring 46. The spring 46 will be compressed. Under the action of the spring force of the spring 46, the pressure plate 48 will apply a pre-pressure to the pin, which will firmly fix the pin on the top of the shearing table 392. This will prevent the pin from being displaced due to the force during the shearing moment. Until the shearing blade 44 contacts the pin, the pin can be sheared in the shearing groove. The operation is convenient and the quality is high.

[0043] In this application, the first hydraulic cylinder 35 and the second hydraulic cylinder 42 need to be connected to the same PLC controller near the device to ensure coordinated and automated operation of the equipment. The PLC controller is existing technology, and those skilled in the art are well aware of its operation method, so it will not be described in detail here.

[0044] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A lead-cutting device for producing resistance thermometers, comprising a base (1), characterized in that: The base (1) is fixedly connected to the top of the processing table (2), the processing table (2) is provided with a fixing mechanism (3) on the top, and a shearing mechanism (4) is provided on the left side of the top of the processing table (2). The fixing mechanism (3) includes a fixing plate (31), which is fixedly connected to the top right end of the processing table (2). A connecting frame (33) is fixedly connected to the inner side of the fixing plate (31). The connecting frame (33) is fixedly connected to the top right end of the processing table (2). A first limiting frame (36) is fixedly connected to the inner side of the connecting frame (33). A support frame (32) is fixedly connected to the top of the fixing plate (31). A first hydraulic cylinder (35) is fixedly connected to the top of the support frame (32). A second limiting frame (37) is fixedly connected to the bottom of the first hydraulic cylinder (35). A connecting seat (34) is fixedly connected to the left side of the fixing plate (31). The connecting seat (34) is fixedly connected to the bottom inner side of the left end of the processing table (2). A fixing cylinder (39) is fixedly connected to the bottom inner side of the connecting seat (34). A shearing table (392) is slidably connected inside the fixing cylinder (39). A fixing shaft (391) is threadedly connected inside the fixing cylinder (39).

2. The lead cutting device for producing resistance thermometers according to claim 1, characterized in that: The first limiting frame (36) and the second limiting frame (37) are both V-shaped and have rubber pads on their inner sides respectively. The second limiting frame (37) is slidably connected to the inside of the first limiting frame (36).

3. The lead cutting device for producing resistance thermometers according to claim 1, characterized in that: The second limiting frame (37) has movable arms (38) fixedly connected to its front and rear sides, and the movable arms (38) are slidably connected to the inside of the support frame (32).

4. The lead cutting device for producing resistance thermometers according to claim 1, characterized in that: The shearing table (392) has a shearing groove on its top and is rectangular. The fixed shaft (391) passes through the bottom of the shearing table (392) and the shearing table (392) is located to the left of the first limiting frame (36).

5. The lead cutting device for producing resistance thermometers according to claim 1, characterized in that: The shearing mechanism (4) includes a concave frame (41), which is fixedly connected to the bottom of the left side of the processing table (2). A second hydraulic cylinder (42) is fixedly connected to the top of the concave frame (41), and a shearing blade (44) is fixedly connected to the bottom of the second hydraulic cylinder (42). A fixed seat (43) is fixedly connected to the left side of the shearing blade (44). A slide rod (47) is slidably connected inside the fixed seat (43). A top plate (45) is fixedly connected to the top of the slide rod (47), and a pressure plate (48) is fixedly connected to the bottom of the slide rod (47). A spring (46) is sleeved around the slide rod (47).

6. The lead-cutting device for producing resistance thermometers according to claim 5, characterized in that: The top of the spring (46) is fixedly connected to the bottom of the top plate (45), the bottom of the spring (46) is fixedly connected to the top of the fixed seat (43), and the pressure plate (48) is located on the top of the shearing table (392).

7. The lead-cutting device for producing resistance thermometers according to claim 5, characterized in that: The shearing blade (44) is slidably connected to the inner side of the concave frame (41), and the bottom of the shearing blade (44) is slidably connected to the shearing groove.

Images