Compression spring length automatic detection device

Abstract

The utility model discloses an automatic detection device for the length of a compression spring, and relates to the technical field of spring length measurement. The device comprises a base and a fixing block, a sliding mechanism is arranged on the surface of the base, a pressure sensor, a supporting block and a distance sensor are fixedly installed on the surface of the sliding mechanism, a qualified product box and an unqualified product box are fixedly installed on the front side surface and the rear side surface of the base respectively, a moving mechanism is arranged on the surface of the fixing block, and a spring fixing mechanism is arranged on the surface of the moving mechanism. The length of the spring can be measured through the distance sensor and sent to the external digital display instrument and the controller, whether the length of the spring is qualified or not is judged through the external controller, and the spring fixing mechanism is driven by the moving mechanism to move back and forth to the position above the qualified product box or the unqualified product box. And the springs originally fixed by the spring fixing mechanism are loosened, so that the springs fall into a qualified product box or an unqualified product box, and the springs are easily classified and collected.

Description

Technical Field

[0001] The utility model relates to the technical field of spring length measurement, in particular to an automatic detection device for the length of a compression spring. Background Art

[0002] A spring is a mechanical part that uses elasticity to work. There are many types of springs. In the process of mechanical design and manufacturing, springs are widely used in various mechanical equipment to play a role in buffering, supporting, and shockproofing. The spring length refers to the total length of the spring when no pressure is applied. The correct spring length can ensure the normal operation of the mechanical equipment, and at the same time avoid equipment damage caused by improper length. The spring is one of the important components of many products, so spring length detection has also become an indispensable part of the production process.

[0003] After the traditional spring length automatic detection device detects the spring length, it is necessary for humans to judge whether the spring length meets the qualified standards, and manually classify and collect qualified and unqualified products. This is time-consuming and labor-intensive and is greatly affected by human factors, which may cause misjudgment, hinder subsequent production and processing, and is not conducive to improving production efficiency and reducing labor costs.

[0004] Therefore, a device for automatically detecting the length of a compression spring is proposed. Utility Model Content

[0005] The purpose of the utility model is to solve the problems mentioned in the above background technology. The utility model provides an automatic detection device for the length of a compression spring.

[0006] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:

[0007] A device for automatically detecting the length of a compression spring comprises a base and a fixed block, wherein a sliding mechanism is provided on the surface of the base, a pressure sensor, a support block and a distance sensor are fixedly mounted on the surface of the sliding mechanism, two pressure sensors and two distance sensors are both arranged opposite to each other on the left and right, the pressure sensor is fixedly mounted between the opposite surfaces of the distance sensor, a qualified product box and a non-qualified product box are fixedly mounted on the front and rear side surfaces of the base respectively, two fixed blocks are provided and are fixedly mounted on the front side of the qualified product box and the back side of the non-qualified product box respectively, a moving mechanism is provided on the surface of the fixed block, and a spring fixing mechanism is provided on the surface of the moving mechanism.

[0008] Furthermore, the sliding mechanism includes a first slide groove, which is opened on the top surface of the base, and a limit plate is fixedly installed on the side of the base. The number of the limit plates is two and they are respectively arranged on the left and right sides of the base. A first motor is fixedly installed on the surface of the limit plate on one side, and a first double-headed threaded rod is fixedly connected to the output end of the first motor. The first double-headed threaded rod is rotatably installed between the opposite surfaces of the two limit plates. A slider is threadedly sleeved on the surface of the first double-headed threaded rod, and the slider is slidably installed on the inner wall surface of the first slide groove. The number of the sliders is two and they are arranged opposite to each other on the left and right, and the pressure sensor and the distance sensor are both fixedly installed on the top surface of the slider.

[0009] Furthermore, the support block is fixedly installed on the inner wall surface of the first slide groove and is located in the middle position of the first slide groove. The first double-headed threaded rod passes through the left and right sides of the support block. The surface of the support block is provided with a through groove for accommodating the rotation of the first double-headed threaded rod.

[0010] Furthermore, the moving mechanism includes a second slide groove, which is opened on the surface of the fixed block, and a second motor is fixedly installed on the front side of the fixed block. The output end of the second motor is fixedly connected to a threaded rod, and the threaded rod is rotatably installed on the inner wall surface of the second slide groove. A connecting rod is slidably installed on the inner wall surface of the second slide groove. The connecting rod on the front side is threadedly sleeved on the surface of the threaded rod, and the spring fixing mechanism is fixedly installed on the top surface of the connecting rod.

[0011] Furthermore, the spring fixing mechanism includes a top plate, which is fixedly installed on the top surface of the connecting rod, and a third motor is fixedly installed on the front side of the connecting rod, and the output end of the third motor is fixedly connected to a second double-headed threaded rod, and the second double-headed threaded rod is rotatably installed between the opposite surfaces of the two connecting rods. A third sliding groove is opened on the bottom surface of the top plate, and a limiting head is slidably installed on the inner wall surface of the third sliding groove, and the limiting head is threadedly sleeved on the surface of the second double-headed threaded rod.

[0012] Furthermore, there are two limit heads, which are arranged symmetrically on both sides, and the bottom side of the limit head is a semicircular structure.

[0013] The beneficial effects of the utility model are as follows: a spring to be tested is placed on the surface of the support block, and is limited by a spring fixing mechanism. The pressure sensors and the distance sensor on the left and right sides are driven by a sliding mechanism to move toward each other until the pressure sensor contacts the spring. When the pressure suddenly increases, the pressure sensor sends a signal to the sliding mechanism through an external controller to stop the sliding mechanism immediately. At this time, the spring length can be measured by the distance sensor and sent to an external digital display and controller. The external controller determines whether the spring length is qualified, and drives the spring fixing mechanism to move back and forth to the top of a qualified product box or a non-qualified product box through a moving mechanism, and releases the spring originally fixed by the spring fixing mechanism, so that the spring falls into the qualified product box or the non-qualified product box, so that the springs can be easily classified and collected, without the need for manual judgment and classification based on the measured results. Compared with manual judgment, it is more accurate, reduces the time and energy of the staff, and is conducive to improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front view schematic diagram of the three-dimensional structure of the utility model;

[0015] Figure 2 This is a front view of the sliding mechanism of the utility model;

[0016] Figure 3 It is a side sectional view of the mobile mechanism of the utility model;

[0017] Figure numerals: 1. base; 2. sliding mechanism; 201. first slide groove; 202. limit plate; 203. first motor; 204. first double-headed threaded rod; 205. slider; 3. pressure sensor; 4. fixing block; 5. moving mechanism; 501. second slide groove; 502. second motor; 503. threaded rod; 504. connecting rod; 6. qualified product box; 7. unqualified product box; 8. supporting block; 9. spring fixing mechanism; 901. top plate; 902. third motor; 903. third slide groove; 904. second double-headed threaded rod; 905. limit head; 10. distance sensor. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In addition, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0021] The electrical components mentioned in this article are all connected to an external main controller and 220V mains electricity, and the main controller can be a conventional known device for controlling a computer or the like.

[0022] In the description of the embodiments of the present invention, it should be noted that the terms "inside", "outside", "upper", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is usually placed when in use. 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, and therefore cannot be understood as a limitation on the present invention.

[0023] like Figures 1 to 3 As shown, an automatic detection device for the length of a compression spring includes a base 1 and a fixed block 4. A sliding mechanism 2 is provided on the surface of the base 1. A pressure sensor 3, a support block 8 and a distance sensor 10 are fixedly installed on the surface of the sliding mechanism 2. There are two pressure sensors 3 and two distance sensors 10, which are arranged opposite to each other on the left and right. The pressure sensor 3 is fixedly installed between the opposite surfaces of the distance sensor 10. A qualified product box 6 and a non-qualified product box 7 are fixedly installed on the front and rear side surfaces of the base 1, respectively. There are two fixed blocks 4, which are fixedly installed on the front of the qualified product box 6 and the back of the non-qualified product box 7, respectively. A moving mechanism 5 is provided on the surface of the fixed block 4, and a spring fixing mechanism 9 is provided on the surface of the moving mechanism 5.

[0024] Specifically, the spring to be tested is placed on the surface of the support block 8, and is limited by the spring fixing mechanism 9 to prevent the spring position from shifting during the test process, causing inaccurate test results. The pressure sensors 3 and the distance sensor 10 on the left and right sides are driven by the sliding mechanism 2 to move toward each other until the pressure sensor 3 contacts the spring. When the pressure suddenly increases, the pressure sensor 3 sends a signal to the sliding mechanism 2 through an external controller to stop the sliding mechanism 2 from moving immediately. At this time, the spring length can be measured by the distance sensor 10 and sent to the external digital display and controller. The external controller determines whether the spring length is qualified, and the moving mechanism 5 drives the spring fixing mechanism 9 to move back and forth. According to whether it is qualified, the spring fixing mechanism 9 and the fixed spring are moved to the top of the qualified product box 6 or the unqualified product box 7, and the spring originally fixed by the spring fixing mechanism 9 is released, so that the spring falls into the qualified product box 6 or the unqualified product box 7, so that the springs can be easily classified and collected, and there is no need for manual judgment and classification based on the measured results. Compared with manual judgment, it is more accurate, reduces the time and energy of the staff, and is conducive to improving work efficiency.

[0025] like Figure 1 to Figure 2 As shown, the sliding mechanism 2 includes a first slide groove 201, which is opened on the top surface of the base 1, and a limit plate 202 is fixedly installed on the side of the base 1. The number of the limit plates 202 is two and they are respectively arranged on the left and right sides of the base 1. A first motor 203 is fixedly installed on the surface of one side of the limit plate 202, and the output end of the first motor 203 is fixedly connected with a first double-headed threaded rod 204, and the first double-headed threaded rod 204 is rotatably installed between the opposite surfaces of the two limit plates 202. A slider 205 is threadedly sleeved on the surface of the first double-headed threaded rod 204, and the slider 205 is slidably installed on the inner wall surface of the first slide groove 201. The number of the sliders 205 is two and they are arranged opposite to each other on the left and right. The pressure sensor 3 and the distance sensor 10 are both fixedly installed on the top surface of the slider 205.

[0026] Specifically, the output end of the first motor 203 drives the first double-headed threaded rod 204 rotatably mounted with the limit plate 202 to rotate, thereby driving the slider 205 threadedly sleeved on the surface of the first double-headed threaded rod 204 and slidably mounted on the inner wall surface of the first slide groove 201 to move toward each other, thereby driving the pressure sensors 3 and distance sensors 10 on both sides to move toward the middle, so as to facilitate the detection of the spring length.

[0027] like Figure 1 to Figure 2 As shown, the support block 8 is fixedly installed on the inner wall surface of the first slide groove 201 and is located in the middle position of the first slide groove 201. The first double-headed threaded rod 204 passes through the left and right sides of the support block 8. A through groove is opened on the surface of the support block 8 to accommodate the rotation of the first double-headed threaded rod 204.

[0028] Specifically, the spring is placed on the surface of the support block 8 and limited by the spring fixing mechanism 9. The first double-headed threaded rod 204 will not be hindered by the support block 8 when rotating. The support block 8 is located in the middle position of the first slide groove 201, so that the pressure sensors 3 on both sides can contact the spring in the middle position when moving toward each other, and the detection error of the spring length is small.

[0029] like Figure 1 and Figure 3 As shown, the moving mechanism 5 includes a second slide groove 501, the second slide groove 501 is opened on the surface of the fixed block 4, a second motor 502 is fixedly installed on the front side of the front fixed block 4, the output end of the second motor 502 is fixedly connected to a threaded rod 503, the threaded rod 503 is rotatably installed on the inner wall surface of the second slide groove 501, a connecting rod 504 is slidably installed on the inner wall surface of the second slide groove 501, the front connecting rod 504 is threadedly sleeved on the surface of the threaded rod 503, and the spring fixing mechanism 9 is fixedly installed on the top surface of the connecting rod 504.

[0030] Specifically, the threaded rod 503 is driven to rotate by rotating the output end of the second motor 502, thereby driving the connecting rod 504, which is threadedly sleeved on the surface of the threaded rod 503 and slidably installed on the inner wall surface of the second slide groove 501, to move forward and backward, and then driving the spring fixing mechanism 9 to move forward and backward, so as to facilitate the classification and collection of the springs according to their lengths.

[0031] like Figure 1 and Figure 3 As shown, the spring fixing mechanism 9 includes a top plate 901, which is fixedly installed on the top surface of the connecting rod 504, a third motor 902 is fixedly installed on the front side of the front connecting rod 504, an output end of the third motor 902 is fixedly connected to a second double-headed threaded rod 904, the second double-headed threaded rod 904 is rotatably installed between the opposite surfaces of the two connecting rods 504, a third slide groove 903 is opened on the bottom surface of the top plate 901, a limit head 905 is slidably installed on the inner wall surface of the third slide groove 903, and the limit head 905 is threadedly sleeved on the surface of the second double-headed threaded rod 904.

[0032] Specifically, place the spring on the surface of the support block 8. Rotate the output end of the third motor 902 to drive the rotation of the second double-headed threaded rod 904, thereby driving the two limit heads 905 that are threadedly sleeved on the surface of the third motor 902 and slidably installed on the inner wall surface of the third chute 903 to move towards each other. Furthermore, the two limit heads 905 can limit the middle spring, facilitating the detection of the spring length without displacement of the spring. After the detection is completed, the controller sends a signal to the moving mechanism 5, and the spring fixing mechanism 9 is moved to a suitable position through the moving mechanism 5. Rotate the output end of the third motor 902 to drive the rotation of the second double-headed threaded rod 904, and then drive the two limit heads 905 that are threadedly sleeved on the surface of the second double-headed threaded rod 904 and slidably installed on the inner wall surface of the third chute 903 to move away from each other, releasing the limit on the spring. The spring can detach from the surface of the limit heads 905 and fall into the qualified product box 6 or the unqualified product box 7 for collection. There is no need for manual judgment and classification collection based on the measured results, saving the time and energy of the staff and facilitating the improvement of work efficiency.

[0033] As Figure 1 and Figure 3 shown, the number of limit heads 905 is two and they are symmetrically arranged left and right. The bottom side of the limit head 905 is in a semi-circular structure.

[0034] Specifically, the number of limit heads 905 is two and the bottom is in a semi-circular structure, which better fits the shape of the spring. It is convenient to limit and fix the spring without damaging the original structure of the spring, facilitating the subsequent processing and production of the spring.

[0035] To sum up: Place the spring to be detected on the surface of the support block 8, limit it through the spring fixing mechanism 9, drive the pressure sensors 3 and the distance sensors 10 on the left and right sides to move towards each other through the sliding mechanism 2 until the pressure sensor 3 contacts the spring. When the pressure suddenly increases, the pressure sensor 3 sends a signal to the sliding mechanism 2 through the external controller to make the sliding mechanism 2 stop moving immediately. At this time, the spring length can be measured by the distance sensor 10 and sent to the external digital display and controller. The external controller judges whether the spring length is qualified, and drives the spring fixing mechanism 9 to move forward and backward above the qualified product box 6 or the unqualified product box 7 through the moving mechanism 5, and releases the spring originally fixed by the spring fixing mechanism 9, so that the spring falls into the qualified product box 6 or the unqualified product box 7, realizing easy classification and collection of the spring. There is no need for manual judgment and classification collection based on the measured results. Compared with manual judgment, it is more accurate, reduces the time and energy of the staff, and is conducive to the improvement of work efficiency.

[0036] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A compression spring length automatic detection device, characterized in that: The invention comprises a base (1) and a fixed block (4); a sliding mechanism (2) is provided on the surface of the base (1); a pressure sensor (3), a support block (8) and a distance sensor (10) are fixedly mounted on the surface of the sliding mechanism (2); the number of the pressure sensor (3) and the distance sensor (10) are both two and they are arranged opposite to each other on the left and right; the pressure sensor (3) is fixedly mounted between the opposite surfaces of the distance sensor (10); a qualified product box (6) and a non-qualified product box (7) are fixedly mounted on the front and rear surfaces of the base (1); the number of the fixed blocks (4) is two and they are fixedly mounted on the front of the qualified product box (6) and the back of the non-qualified product box (7); a moving mechanism (5) is provided on the surface of the fixed block (4); and a spring fixing mechanism (9) is provided on the surface of the moving mechanism (5).

2. The automatic detection device for compression spring length according to claim 1, characterized in that: The sliding mechanism (2) comprises a first slide groove (201), the first slide groove (201) is opened on the top surface of the base (1), a limit plate (202) is fixedly installed on the side of the base (1), the limit plates (202) are two in number and are respectively arranged on the left and right sides of the base (1), a first motor (203) is fixedly installed on the surface of one side of the limit plate (202), an output end of the first motor (203) is fixedly connected with a first double-headed threaded rod (204), the first double-headed threaded rod (204) is rotatably installed between the opposite surfaces of the two limit plates (202), a slider (205) is threadedly sleeved on the surface of the first double-headed threaded rod (204), the slider (205) is slidably installed on the inner wall surface of the first slide groove (201), the slider (205) is two in number and is arranged opposite to each other on the left and right sides, and the pressure sensor (3) and the distance sensor (10) are both fixedly installed on the top surface of the slider (205).

3. The automatic detection device for compression spring length according to claim 2, characterized in that: The support block (8) is fixedly mounted on the inner wall surface of the first slide groove (201) and is located in the middle position of the first slide groove (201); the first double-headed threaded rod (204) passes through the left and right sides of the support block (8); and a through groove is provided on the surface of the support block (8) for accommodating the rotation of the first double-headed threaded rod (204).

4. The automatic detection device for compression spring length according to claim 1, characterized in that: The moving mechanism (5) comprises a second slide groove (501), the second slide groove (501) is opened on the surface of the fixed block (4), a second motor (502) is fixedly installed on the front face of the fixed block (4) on the front side, a threaded rod (503) is fixedly connected to the output end of the second motor (502), the threaded rod (503) is rotatably installed on the inner wall surface of the second slide groove (501), a connecting rod (504) is slidably installed on the inner wall surface of the second slide groove (501), the connecting rod (504) on the front side is threadedly sleeved on the surface of the threaded rod (503), and the spring fixing mechanism (9) is fixedly installed on the top surface of the connecting rod (504).

5. The automatic detection device for compression spring length according to claim 4, characterized in that: The spring fixing mechanism (9) comprises a top plate (901), the top plate (901) is fixedly mounted on the top surface of the connecting rod (504), a third motor (902) is fixedly mounted on the front surface of the connecting rod (504) on the front side, an output end of the third motor (902) is fixedly connected to a second double-headed threaded rod (904), the second double-headed threaded rod (904) is rotatably mounted between opposite surfaces of the two connecting rods (504), a third sliding groove (903) is provided on the bottom surface of the top plate (901), a limiting head (905) is slidably mounted on the inner wall surface of the third sliding groove (903), and the limiting head (905) is threadedly sleeved on the surface of the second double-headed threaded rod (904).

6. The automatic detection device for compression spring length according to claim 5, characterized in that: The number of the limiting heads (905) is two and they are arranged symmetrically on the left and right, and the bottom side of the limiting head (905) is a semicircular structure.

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