Hemming device for oxygen sensor base

Abstract

The utility model relates to the technical field of sensor processing equipment, and discloses an oxygen sensor base hemming device which comprises a clamp, an elastic piece, a linear driving mechanism, a pressure head assembly, a shifting piece and two clamping arms capable of being opened and closed, and the clamp is used for positioning a base; the elastic piece forces the two clamping arms to be closed so as to clamp a base on the clamp; the linear driving mechanism is used for driving the pressing head assembly to abut against the end opening of the base so that the end opening of the base can form a hemming structure, and the linear driving mechanism is used for driving the stirring piece to move towards the two clamping arms so that the two clamping arms can be driven to be opened. Due to the fact that the base is supported by the two clamping arms, the situation that the base inclines or inclines is avoided, the accuracy and stability of base positioning and posture are improved, it is guaranteed that the pressing head assembly can be accurately pressed on an end opening of the base, then the precision and quality of the hemming structure are guaranteed, and the machining qualification rate of the hemming structure can be increased.

Description

Technical Field

[0001] The utility model relates to the technical field of sensor processing equipment, in particular to an oxygen sensor base crimping device. Background Art

[0002] The oxygen sensor base is generally tubular in shape, with key components such as the oxygen sensor chip housed within its inner cavity. To secure these critical components, the base's port is typically crimped, causing the sidewalls at the port to curve inward, creating a crimped structure. Current crimping devices often exhibit skewed crimping structures, resulting in a low pass rate and increased wear on the indenter. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems in the prior art. To this end, the present invention provides an oxygen sensor base crimping device that can improve the processing qualification rate.

[0004] According to an embodiment of the utility model, an oxygen sensor base curling device includes a clamp, an elastic member, a linear drive mechanism, a pressure head assembly, a toggle member and two clamping arms that can be opened and closed. The clamp is used to position the base; the elastic member forces the two clamping arms to close together to clamp the base on the clamp; the linear drive mechanism is used to drive the pressure head assembly to press the port of the base so that the port of the base forms a curling structure, and the linear drive mechanism is used to drive the toggle member to move toward the two clamping arms to drive the two clamping arms to open.

[0005] It has at least the following beneficial effects: since there are two clamping arms supporting the base, the base is prevented from tilting or skewing, the accuracy and stability of the base positioning and posture are improved, and the pressure head assembly is ensured to be accurately pressed on the port of the base, thereby ensuring the accuracy and quality of the curling structure, and the processing qualification rate of the curling structure can be improved.

[0006] According to some embodiments of the present invention, the pressure head assembly includes a connecting seat and a cutting die, the connecting seat is provided with a mounting hole, the cutting die can be detachably arranged in the mounting hole, and the cutting die is used to press the port of the base.

[0007] According to some embodiments of the present invention, the cutting die is annular, and the inner walls of the two ports of the cutting die are provided with arc-shaped concave structures, and the shape of the concave structures matches the curling structure of the base.

[0008] According to some embodiments of the present invention, the pressure head assembly is arranged above the clamp, the toggle member is arranged above the two clamping arms, the driving direction of the linear drive mechanism is the up and down direction, the output end of the linear drive mechanism is connected to the pressure head assembly and the toggle member, and the linear drive mechanism is used to drive the pressure head assembly and the toggle member to rise and fall synchronously.

[0009] According to some embodiments of the present invention, a pressure sensor is provided between the linear drive mechanism and the pressure head assembly, and the pressure sensor is used to detect the pressure applied to the pressure head assembly.

[0010] According to some embodiments of the present invention, the clamp is provided with a limiting hole for positioning the base, the limiting hole passes through the upper and lower surfaces of the clamp, and a collection box is provided under the clamp, the collection box is used to collect the base or debris passing through the limiting hole.

[0011] According to some embodiments of the present invention, it further includes a slide rail and two sliders, the two sliders are slidably disposed on the slide rail, and the two clamping arms are respectively connected to the two sliders.

[0012] According to some embodiments of the present invention, both clamping arms or both sliders are provided with rotating wheels, one end face of the toggle member is provided with two inclined surfaces, the toggle member is symmetrically wedge-shaped, and the two inclined surfaces respectively abut against the two rotating wheels.

[0013] According to some embodiments of the present invention, an in-position sensor is provided between the two clamping arms or the two sliders, the position of the in-position sensor is adjustable, and the in-position sensor is used to detect the position of the toggle member.

[0014] According to some embodiments of the present invention, two corresponding side surfaces of the two clamping arms are provided with V-shaped grooves, and the inner walls of the V-shaped grooves are used to clamp on the surface of the base.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0017] Figure 1 This is a schematic structural diagram of an embodiment of the present utility model;

[0018] Figure 2 This is a schematic structural diagram of the clamp, clamping arm, in-position sensor, slide rail, slider and rotating wheel in an embodiment of the present utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the embodiment of the utility model after the frame, linear drive mechanism and mounting plate are hidden;

[0020] Figure 4 for Figure 3 A partial enlarged schematic diagram of point A in the middle;

[0021] Figure 5 This is a schematic structural diagram of the knife die in the embodiment of the present utility model;

[0022] Figure 6 This is a schematic cross-sectional view of the knife die in the embodiment of the present utility model;

[0023] Figure Number:

[0024] Clamp 100; limiting hole 110;

[0025] Clamping arm 200;

[0026] Linear drive mechanism 300;

[0027] Press head assembly 400; connecting seat 410; mounting hole 411; cutting die 420; concave structure 421;

[0028] Toggle member 500; inclined surface 510;

[0029] Pressure sensor 600;

[0030] Collection box 700;

[0031] Rack 800; slide rail 810; slider 820; in-position sensor 830; bottom plate 840; lifting plate 850;

[0032] Wheel 900. DETAILED DESCRIPTION

[0033] The following describes in detail embodiments of the present invention. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0034] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0035] In the description of this utility model, "a plurality" means more than two. The use of "first" or "second" is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features indicated, or implicitly indicating the order of the technical features indicated.

[0036] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0037] Reference Figures 1 to 4 The utility model discloses an oxygen sensor base curling device, which includes a clamp 100, an elastic member, a linear drive mechanism 300, a pressure head assembly 400, a toggle member 500 and two clamping arms 200 that can be opened and closed. The clamp 100 is used to position the base; the elastic member forces the two clamping arms 200 to close together to clamp the base on the clamp 100; the linear drive mechanism 300 is used to drive the pressure head assembly 400 to press the port of the base so that the port of the base forms a curling structure; the linear drive mechanism 300 is used to drive the toggle member 500 to move toward the two clamping arms 200 to drive the two clamping arms 200 to open.

[0038] When the curling device performs curling processing on the base, the two clamping arms 200 are first spread open and the base to be processed is placed on the fixture 100, and then the two clamping arms 200 clamp the base to be processed, which plays a role in positioning and stabilizing the base on the fixture 100. Then the linear drive mechanism 300 drives the pressure head assembly 400 to move toward the fixture 100, so that the pressure head assembly 400 presses the port of the base, and then a curling structure is processed at the port of the base, and the linear drive mechanism 300 drives the toggle member 500 to move toward the two clamping arms 200, and the toggle member 500 opens or spreads the two clamping arms 200, and the two clamping arms 200 release the base to prevent the clamping arms 200 from interfering with the operation of the pressure head assembly 400.

[0039] Since there are two clamping arms 200 supporting the base, the base is prevented from tilting or skewing, the accuracy and stability of the base positioning and posture are improved, and the pressure head assembly 400 is ensured to be accurately pressed on the port of the base, thereby ensuring the accuracy and quality of the curling structure and improving the processing qualification rate of the curling structure.

[0040] Reference Figure 4In some embodiments, the pressing head assembly 400 includes a connecting seat 410 and a cutting die 420. The connecting seat 410 is used to connect to the output end of the linear drive mechanism 300. A mounting hole 411 is provided on the connecting seat 410. The cutting die 420 can be detachably arranged in the mounting hole 411. The linear drive mechanism 300 drives the cutting die 420 to move by driving the connecting seat 410. The cutting die 420 is used to press the port of the base. When the linear drive mechanism 300 drives the connecting seat 410 and the cutting die 420 to move toward the fixture 100, the cutting die 420 will press the port of the base, and the cutting die 420 processes a curling structure at the port of the base.

[0041] Since it is the cutting die 420 that is actually in contact with the base, that is, the curling structure is processed using the cutting die 420, the cutting die 420 will wear out. The cutting die 420 is detachably arranged in the mounting hole 411, and the mounting hole 411 serves to position the cutting die 420 on the connecting seat 410. When the cutting die 420 needs to be repaired and replaced due to wear, the old cutting die 420 can be removed from the side wall of the mounting hole 411 and a new cutting die 420 can be installed.

[0042] It is conceivable that the mounting hole 411 is a stepped hole that is smaller at the top and larger at the bottom.

[0043] Reference Figure 5 and Figure 6 In some embodiments, the cutting die 420 is annular, and the inner walls of the two ports of the cutting die 420 are provided with an arc-shaped concave structure 421. The shape of the concave structure 421 matches the curling structure of the base. When the concave structure 421 abuts against the outer wall of the port of the base, the concave structure 421 presses the outer wall of the port of the base, and the outer wall of the port of the base is concave, thereby forming a curling structure.

[0044] Since the inner walls of the two ports of the cutting die 420 are provided with a concave structure 421, when one of the concave structures 421 of the cutting die 420 is worn, the cutting die 420 can be flipped over and installed on the connecting seat 410 again, so that the other concave structure 421 of the cutting die 420 can perform curling processing on the base, and the cutting die 420 can be fully utilized, reducing waste of resources and reducing costs.

[0045] The longitudinal section of the concave structure 421 is arc-shaped, and chamfers or roundings are provided between the concave structure 421 and the end surface of the cutting die 420 , and between the concave structure 421 and the inner wall of the center hole of the cutting die 420 .

[0046] Reference Figure 1 and Figure 3In some embodiments, the pressing head assembly 400 is arranged above the clamp 100, the toggle member 500 is arranged above the two clamping arms 200, the driving direction of the linear drive mechanism 300 is up and down, the output end of the linear drive mechanism 300 is connected to the pressing head assembly 400 and the toggle member 500, and the linear drive mechanism 300 is used to drive the pressing head assembly 400 and the toggle member 500 to rise and fall synchronously. When the linear drive mechanism 300 drives the pressing head assembly 400 and the toggle member 500 up and down, When the clamp 100 is raised, there are no obstacles above the two clamping arms 200, which makes it easy to place the base to be processed on the clamp 100 and remove the base from the clamp 100 after processing. When the linear drive mechanism 300 drives the pressure head assembly 400 and the toggle member 500 to descend, the pressure head assembly 400 presses down the port of the base on the clamp 100, thereby processing a curling structure, and the toggle member 500 rests on the two clamping arms 200 and opens or stretches the two clamping arms 200.

[0047] Reference Figure 3 In some embodiments, a pressure sensor 600 is provided between the linear drive mechanism 300 and the pressing head assembly 400. The pressure sensor 600 is used to detect the pressure applied to the pressing head assembly 400. When the pressure applied by the pressing head assembly 400 to press the base is too large or too small, feedback can be given to ensure the quality of the processed curling structure and avoid damage to the fixture 100.

[0048] Reference Figures 2 to 4 In some embodiments, the clamp 100 is provided with a limiting hole 110 for positioning the base. The limiting hole 110 passes through the upper and lower surfaces of the clamp 100. A collection box 700 is provided under the clamp 100. When the pressure head assembly 400 presses down the base, debris may be generated on the pressure head assembly 400 and the base. The debris and the damaged base can pass through the limiting hole 110 and fall onto the collection box 700. The collection box 700 is used to collect the base or debris that passes through the limiting hole 110.

[0049] Reference Figure 2 and Figure 4 In some embodiments, the curling device also includes a slide rail 810 and two sliders 820. The two sliders 820 are slidably arranged on the slide rail 810. The two clamping arms 200 are respectively connected to the two sliders 820. The two sliders 820 slide on the slide rail 810, so that the two clamping arms 200 can be opened and closed.

[0050] Reference Figure 2 and Figure 4In some embodiments, both clamping arms 200 or both sliders 820 are equipped with rotating wheels 900. Two inclined surfaces 510 are provided on one end surface of the toggle member 500. The toggle member 500 is symmetrically wedge-shaped, and the two inclined surfaces 510 respectively abut against the two rotating wheels 900. When the two inclined surfaces 510 rise and fall, the two inclined surfaces 510 drive the two clamping arms 200 / two sliders 820 to move via the two rotating wheels 900. Rolling friction is generated between the rotating wheels 900 and the inclined surfaces 510. Compared to sliding friction, rolling friction has lower resistance and can also reduce component wear.

[0051] In some of the embodiments, an in-position sensor 830 is provided between the two clamping arms 200 or the two sliders 820. The position of the in-position sensor 830 is adjustable. The in-position sensor 830 is used to detect the position of the toggle member 500. When the in-position sensor 830 detects the toggle member 500, it indicates that the toggle member 500 has dropped to a suitable position. At this time, the linear drive mechanism 300 stops driving the toggle member 500 to move downward.

[0052] Reference Figure 2 In some embodiments, two corresponding sides of the two clamping arms 200 are provided with V-shaped grooves, and the inner walls of the V-shaped grooves are used to clamp on the surface of the base. The V-shaped grooves serve as a limit for the base to ensure the vertical stability of the base.

[0053] Reference Figures 1 to 4 The curling device also includes a frame 800, a bottom plate 840 is provided on the table top of the frame 800, the clamp 100 is fixed to the bottom plate 840 by fasteners, a first avoidance hole is provided on the table top of the frame 800, and a second avoidance hole is provided on the bottom plate 840. The first avoidance hole, the second avoidance hole and the limit hole 110 are connected in sequence from bottom to top, and the collection box 700 is connected to the lower surface of the table top of the frame 800.

[0054] The slide rail 810 and the in-position sensor 830 are both mounted on a base plate 840. Four vertical guide posts are mounted on the base plate 840, each fitted with a guide sleeve. These four sleeves are connected to a single lift plate 850. The upper ends of the four guide posts are connected to a mounting plate. The linear drive mechanism 300 is mounted on the mounting plate, with its output end connected to the lift plate 850. The pressure sensor 600 and the toggle member 500 are both mounted on the lower surface of the lift plate 850. The connection base 410 of the pressure head assembly 400 is located below the pressure sensor 600. The linear drive mechanism 300 is a pneumatic cylinder.

[0055] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0056] Of course, the present invention is not limited to the above-mentioned embodiments. Those skilled in the art may make equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. An oxygen sensor base crimping device, characterized in that: include: A fixture (100) for positioning the base; an elastic member and two clamping arms (200) capable of opening and closing, wherein the elastic member forces the two clamping arms (200) to close together to clamp the base on the clamp (100); A linear drive mechanism (300), a pressure head assembly (400) and a toggle member (500), wherein the linear drive mechanism (300) is used to drive the pressure head assembly (400) to press the port of the base so that the port of the base forms a curling structure, and the linear drive mechanism (300) is used to drive the toggle member (500) to move toward the two clamping arms (200) to drive the two clamping arms (200) to open.

2. The oxygen sensor base crimping device according to claim 1, characterized in that: The pressing head assembly (400) comprises a connecting seat (410) and a cutting die (420); a mounting hole (411) is provided on the connecting seat (410); the cutting die (420) is detachably mounted on the mounting hole (411); and the cutting die (420) is used to press the port of the base.

3. The oxygen sensor base crimping device according to claim 2, characterized in that: The cutting die (420) is annular, and the inner walls of the two ports of the cutting die (420) are both provided with arc-shaped concave structures (421), and the shape of the concave structures (421) matches the curling structure of the base.

4. The oxygen sensor base crimping device according to claim 1, characterized in that: The pressure head assembly (400) is arranged above the clamp (100), the toggle member (500) is arranged above the two clamping arms (200), the driving direction of the linear drive mechanism (300) is the up-down direction, the output end of the linear drive mechanism (300) is connected to the pressure head assembly (400) and the toggle member (500), and the linear drive mechanism (300) is used to drive the pressure head assembly (400) and the toggle member (500) to rise and fall synchronously.

5. The oxygen sensor base crimping device according to claim 4, characterized in that: A pressure sensor (600) is provided between the linear drive mechanism (300) and the pressure head assembly (400), and the pressure sensor (600) is used to detect the magnitude of the pressure applied to the pressure head assembly (400).

6. The oxygen sensor base crimping device according to claim 4, characterized in that: The clamp (100) is provided with a limiting hole (110) for positioning the base, the limiting hole (110) passing through the upper and lower surfaces of the clamp (100), and a collection box (700) is provided below the clamp (100), the collection box (700) being used to collect the base or debris passing through the limiting hole (110).

7. The oxygen sensor base crimping device according to any one of claims 1 to 6, characterized in that: It also includes a slide rail (810) and two sliders (820), wherein the two sliders (820) are both slidably arranged on the slide rail (810), and the two clamping arms (200) are respectively connected to the two sliders (820).

8. The oxygen sensor base crimping device according to claim 7, characterized in that: The two clamping arms (200) or the two sliders (820) are both provided with rotating wheels (900), and one end surface of the toggle member (500) is provided with two inclined surfaces (510). The toggle member (500) is symmetrically wedge-shaped, and the two inclined surfaces (510) respectively abut against the two rotating wheels (900).

9. The oxygen sensor base crimping device according to claim 8, characterized in that: An in-position sensor (830) is provided between the two clamping arms (200) or the two sliders (820), and the position of the in-position sensor (830) is adjustable. The in-position sensor (830) is used to detect the position of the toggle member (500).

10. The oxygen sensor base crimping device according to claim 1, characterized in that: Two corresponding side surfaces of the two clamping arms (200) are provided with V-shaped grooves, and the inner walls of the V-shaped grooves are used to clamp on the surface of the base.

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