Automatic measuring equipment for the clearance of automobile seat frames

Abstract

The present invention belongs to the technical field of automobile component detection equipment, and in particular, relates to an automatic measuring device for the movable gap of an automobile seat frame, comprising a workbench, on which a positioning mechanism, a detection mechanism, an operating knob, and a control system are provided. The positioning mechanism comprises a plurality of V-shaped positioning blocks, a rib for preventing the product from moving left and right, and a clamping mechanism for preventing the product from moving upward. The detection mechanism comprises a proximity sensor, a mounting seat, a gauge, a lifting cylinder mounting frame, a lifting cylinder, a laser displacement sensor, and a laser displacement sensor amplifier display. The operating knob is arranged on one side of the table, and the operating knob, the positioning mechanism, and the detection mechanism are all connected to the control system. The present invention uses a laser displacement sensor for distance measurement and an intelligent industrial measurement method to replace people to complete functions such as identification, measurement, positioning, and recording, thereby effectively improving the detection speed and accuracy, increasing production and quality, and reducing labor costs.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile component detection equipment, and in particular relates to an automatic measuring device for the movable gap of an automobile seat frame. Background Art

[0002] As cars become our main means of transportation, people's requirements for their manufacturing process have become higher and higher, making their production process more and more advanced, and the production and inspection of various parts have become more and more advanced, with higher and higher precision. In order to increase the comfort of passengers, it is necessary to measure the freeplay value of the backrest. The current detection method is: on the workbench outside the production line, use a manual gauge to measure. The optical axis of the seat frame backrest armrest box is used as a positioning pin to insert the gauge, and the mushroom pin is used as the support pin. The gauge rests on the mushroom pin to detect the distance between the lower plane of the seat frame and the upper plane of the gauge. Use a vernier caliper and a fixed gauge to manually measure and record, without data collection and analysis. During the measurement process, manual recording and judgment are used, which is inefficient, with a high error rate, and labor fatigue is easy, and the labor cost is also high. Summary of the invention

[0003] The purpose of the present invention is to solve the deficiencies of the prior art and to provide an automatic measuring device for the active clearance of a car seat frame with high detection accuracy and high speed.

[0004] The purpose of the present invention is to be solved by the following technical solutions:

[0005] An automatic measuring device for the active clearance of a car seat frame, characterized in that it comprises a workbench, on which a positioning mechanism, a detection mechanism, an operating knob, and a control system are provided;

[0006] The positioning mechanism includes a plurality of V-shaped positioning blocks that cooperate with the frame of the car seat to be inspected and are used to support the frame of the car seat to be inspected; a retaining edge is provided on the workbench surface to prevent the frame of the car seat to be inspected from moving left and right, and retaining edges are provided on both sides of the frame of the car seat to be inspected; a plurality of clamping mechanisms are provided on the workbench to prevent the frame of the car seat to be inspected from moving upward;

[0007] The detection mechanism includes a proximity sensor, a mounting seat, a check fixture, a lifting cylinder mounting frame, a lifting cylinder, a laser displacement sensor, a laser displacement sensor amplifier display screen, and a calibration block;

[0008] The proximity sensor is arranged on the workbench surface and matches the position of the product to be inspected;

[0009] The inspection fixture is a U-shaped inspection fixture, comprising a first short rod, a second short rod, and a long rod, wherein the first short rod and the second short rod are vertically fixed at the left and right ends of the long rod respectively;

[0010] The mounting seat is fixed on the workbench surface, a rotating shaft is fixed on the mounting seat, an extension surface is provided on the left side of the first short rod, the rotating shaft is rotatably connected to the upper left corner of the front side of the extension surface, a positioning pin hole is provided on the rear side of the extension surface, the central axis of the positioning pin hole coincides with the central axis of the rotating shaft, a V-shaped positioning groove is provided on the top surface of the right side of the extension surface, the first short rod and the extension surface pass through the workbench surface and are located above the workbench surface;

[0011] The jacking cylinder mounting frame is in the shape of an elongated strip. The jacking cylinder mounting frame is vertically arranged on the bottom surface of the workbench and is located at the left end of the long rod. The bottom of the jacking cylinder is hinged to the bottom of the jacking cylinder mounting frame. A connecting piece is provided on the rod head of the jacking cylinder, and the connecting piece is hinged to the right end of the long rod.

[0012] A laser displacement sensor is provided on the top of the second short rod, a calibration block simulating the seat loading distance is provided on the top of the laser displacement sensor, through holes are provided on the workbench surface for the calibration block, the laser displacement sensor and the second short rod to pass through, a laser displacement sensor amplifier display screen is provided on the workbench surface, and the laser displacement sensor is connected to the laser displacement sensor amplifier display screen;

[0013] The operating knob is arranged on one side of the table, and the operating knob, the positioning mechanism and the detection mechanism are all connected to the control system.

[0014] Based on the above structure, the product to be inspected is placed on the matching tooling, and the distance is measured by a laser displacement sensor. An intelligent industrial measurement system is used to replace people to complete the functions of identification, measurement, positioning, and recording, effectively improving the detection speed and accuracy, greatly improving production and quality, and reducing labor costs.

[0015] Furthermore, the present invention also includes a reset mechanism, including a tension spring fixing frame, a tension spring, a tension spring fixing rod, and a tension spring fixing block; the tension spring fixing frame is fixed to the bottom surface of the workbench and is located on the right front side of the through hole, the top end of the tension spring fixing rod is fixed on the second short rod and is perpendicular to the long rod, the tension spring fixing block is fixed to the lower end of the tension spring fixing rod, one end of the tension spring is connected to the tension spring fixing frame, and the other end is connected to the tension spring fixing block.

[0016] Furthermore, the clamping mechanism of the present invention includes a clamping cylinder and a clamping head. The clamping cylinder is fixed on the workbench surface with its rod head facing upward. The clamping head is fixed on the clamping cylinder rod head. The outer covers of the clamping cylinder and the clamping head are provided with protective covers.

[0017] Furthermore, the bottom of the V-shaped positioning block of the present invention is provided with a first sliding mechanism, including a first base, a first sliding rod arranged on the first base, a first sliding block movably connected to the first sliding rod, and the V-shaped positioning block is fixed on the top of the first sliding block.

[0018] Furthermore, in the present invention, the first short rod, the extension surface, the second short rod and the long rod are integrally formed.

[0019] Furthermore, the workbench of the present invention is provided with a buzzer, and the buzzer is connected to the control system.

[0020] Compared with the prior art, the present invention has the following characteristics and beneficial effects:

[0021] 1. Place the product to be inspected on the corresponding tooling, measure the distance through the laser displacement sensor, and use the intelligent industrial measurement system to replace people to complete the functions of identification, measurement, positioning, and recording, effectively improving the detection speed and accuracy, greatly improving the output and quality, and reducing labor costs.

[0022] 2. Place the car seat frame to be tested horizontally and place it on the V-shaped positioning block. The retaining edge can prevent the car seat frame from moving left and right. The pressing cylinder rod head contracts, and the pressing head presses the car seat frame on the V-shaped positioning block to prevent it from moving up and down, thereby improving the stability of the product to be tested and ensuring the accuracy of the measurement results.

[0023] 3. The proximity sensor can sense whether the product is in place, avoiding the detection mechanism from performing useless work before the product is in place, and also avoiding damage to the product.

[0024] 4. The first short rod, the extension surface, the second short rod and the long rod are integrally formed. The integrally formed gauge structure is more stable, ensuring measurement accuracy and service life.

[0025] 5. The setting of the reset mechanism speeds up the reset of the detection mechanism, reduces the load of the lifting cylinder, and effectively extends the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0027] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention without the protective cover.

[0028] Figure 3 It is a schematic diagram of the main structure of the detection mechanism of the present invention.

[0029] Figure 4 It is a schematic diagram of the three-dimensional structure of the detection mechanism of the present invention.

[0030] In the figure: workbench 1, buzzer 2, operating knob 3, V-shaped positioning block 4, first base 5, first slide bar 6, first slide block 7, rib 8, clamping cylinder 9, clamping head 10, protective cover 11, proximity sensor 12, mounting seat 13, inspection fixture 14, lifting cylinder mounting frame 15, lifting cylinder 16, laser displacement sensor 17, laser displacement sensor amplifier display screen 18, first short rod 19, second short rod 20, long rod 21, rotating shaft 22, extension surface 23, positioning pin hole 24, V-shaped positioning groove 25, connecting piece 26, through hole 27, tension spring fixing frame 28, tension spring 29, tension spring fixing rod 30, tension spring fixing block 31, calibration block 32. DETAILED DESCRIPTION

[0031] The following will be combined with the attached Figure 1-4 The present invention is described in further detail.

[0032] like Figure 1 , Figure 2 As shown, an automatic measuring device for the movable gap of a car seat frame is characterized by comprising a workbench 1, on which a positioning mechanism, a detection mechanism, an operating knob 3, and a control system are provided. A buzzer 2 is provided on the workbench 1, and the buzzer 2 is connected to the control system.

[0033] The positioning mechanism includes a plurality of V-shaped positioning blocks 4 that cooperate with the frame of the car seat to be inspected and are used to support the frame of the car seat to be inspected. The bottom of the V-shaped positioning block 4 is provided with a first sliding mechanism, including a first base 5, a first slide bar 6 arranged on the first base 5, a first slider 7 movably connected to the first slider 6, and the V-shaped positioning block 4 is fixed on the top of the first slider 7. The workbench 1 is provided with a retaining edge 8 to prevent the frame of the car seat to be inspected from moving left and right, and the retaining edge 8 is provided on both sides of the frame of the car seat to be inspected. The workbench 1 is provided with a plurality of clamping mechanisms to prevent the frame of the car seat to be inspected from moving upward; the clamping mechanism includes a clamping cylinder 9 and a clamping head 10, the clamping cylinder 9 is fixed on the workbench 1, and its rod head is arranged upward, the clamping head 10 is fixed on the rod head of the clamping cylinder 9, and the outer covers of the clamping cylinder 9 and the clamping head 10 are provided with a protective cover 11.

[0034] Place the car seat frame to be tested horizontally and on the V-shaped positioning block 4. The retaining edge 8 can prevent the car seat frame from moving left and right. The rod head of the clamping cylinder 9 contracts, and the clamping head 10 presses the car seat frame on the V-shaped positioning block 4 to prevent it from moving up and down, thereby improving the stability of the product to be tested and ensuring the accuracy of the measurement results.

[0035] like Figure 3 , Figure 4As shown, the detection mechanism includes a proximity sensor 12, a mounting seat 13, a check fixture 14, a lifting cylinder mounting frame 15, a lifting cylinder 16, a laser displacement sensor 17, a laser displacement sensor amplifier display screen 18, and a calibration block 32;

[0036] The proximity sensor 12 is arranged on the workbench 1 and matches the position of the product to be inspected. The proximity sensor 12 can sense whether the product is in place, thereby avoiding the detection mechanism from performing useless work before the product is in place and avoiding damage to the product.

[0037] The gauge 14 is a U-shaped gauge, including a first short bar 19, a second short bar 20, and a long bar 21. The first short bar 19 and the second short bar 20 are respectively fixed vertically at the left and right ends of the long bar 21. The mounting seat 13 is fixed on the workbench 1. A rotating shaft 22 is fixed on the mounting seat 13. An extension surface 23 is provided on the left side of the first short bar 19. The rotating shaft 22 is rotatably connected to the upper left corner of the front side of the extension surface 23. A positioning pin hole 24 is provided on the rear side of the extension surface 23. The central axis of the positioning pin hole 24 coincides with the central axis of the rotating shaft 22. A V-shaped positioning groove 25 is provided on the top surface of the right side of the extension surface 23. The first short bar 19 and the extension surface 23 pass through the workbench 1 and are above the workbench 1. The first short bar 19, the extension surface 23, the second short bar 20, and the long bar 21 are integrally formed. The integrally formed gauge structure is more stable, ensuring measurement accuracy and service life.

[0038] The lifting cylinder mounting frame 15 is in the shape of an elongated strip. The lifting cylinder mounting frame 15 is vertically arranged on the bottom surface of the workbench 1 and is at the left end of the long rod 21. The bottom of the lifting cylinder 16 is hinged to the bottom of the lifting cylinder mounting frame 15. A connecting piece 26 is provided on the rod head of the lifting cylinder 16, and the connecting piece 26 is hinged to the right end of the long rod 21.

[0039] The second short rod 20 is provided with a laser displacement sensor 17 on the top, and a calibration block 32 simulating the seat loading distance is provided on the top of the laser displacement sensor 17. A through hole 27 is provided on the workbench 1 for the calibration block 32, the laser displacement sensor 17 and the second short rod 20 to pass through. A laser displacement sensor amplifier display screen 18 is provided on the workbench 1, and the laser displacement sensor 17 is connected to the laser displacement sensor amplifier display screen 18. Distance measurement by the laser displacement sensor 17 improves measurement speed and accuracy, and speeds up production rhythm.

[0040] The operating knob 31 is arranged on one side of the table, and the operating knob 31 , the positioning mechanism, and the detection mechanism are all connected to the control system.

[0041] It also includes a reset mechanism, including a tension spring fixing frame 28, a tension spring 29, a tension spring fixing rod 30, and a tension spring fixing block 31; the tension spring fixing frame 28 is fixed to the bottom surface of the workbench 1 and is located on the right front side of the through hole 27, the top end of the tension spring fixing rod 30 is fixed on the second short rod 20 and is perpendicular to the long rod 21, the tension spring fixing block 31 is fixed to the lower end of the tension spring fixing rod 30, one end of the tension spring 29 is connected to the tension spring fixing frame 28, and the other end is connected to the tension spring fixing block 31. The setting of the reset mechanism accelerates the resetting of the detection mechanism, reduces the load of the jacking cylinder 16, and effectively extends the service life of the equipment.

[0042] This equipment needs to detect the freeplay value of the car seat frame, that is, to detect its active clearance. The detection method is to use the optical axis of the seat frame backrest armrest box as the positioning pin to insert into the inspection fixture, use the mushroom pin as the supporting pin, and the inspection fixture rests on the mushroom pin to detect the distance between the lower plane of the seat frame and the upper plane of the inspection fixture.

[0043] The working process of this equipment is as follows:

[0044] The automobile seat frame to be inspected is manually placed horizontally and placed on the V-shaped positioning block 4. The positions of multiple V-shaped positioning blocks 4 match the automobile seat frame, so that the automobile seat frame can be stably placed on the V-shaped positioning block 4. The optical axis of the backrest armrest box of the automobile seat frame to be inspected is inserted into the positioning pin hole 24. The retaining edge can prevent the automobile seat frame from moving left and right. After the product is in place, the rod head of the pressing cylinder 9 is retracted, and the pressing head 10 presses the automobile seat frame on the V-shaped positioning block 4 to prevent it from moving up and down.

[0045] After the proximity sensor 12 detects that the product is in place, the worker can rotate the operating knob 31 to extend the rod head of the lifting cylinder 16 until the V-shaped positioning groove 4 is in contact with the mushroom pin of the product to be inspected. At the same time, the laser displacement sensor 17 rises and is located under the backrest of the car seat frame. After the laser displacement sensor 17 reaches the specified position, it can quickly and accurately measure the distance between it and the lower plane of the car seat frame. After measuring the distance, the laser displacement sensor 17 can transmit the data to the control system and the laser displacement sensor amplifier display screen 18, so that the inspection personnel can read and record the data. If an error occurs during the measurement process, the buzzer 2 will alarm to avoid damage to the equipment and products.

[0046] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. An automatic measuring device for the movable clearance of a car seat frame, characterized in that: It includes a workbench, on which a positioning mechanism, a detection mechanism, an operating knob, and a control system are provided; The positioning mechanism includes a plurality of V-shaped positioning blocks that cooperate with the frame of the car seat to be inspected and are used to support the frame of the car seat to be inspected; a retaining edge is provided on the workbench surface to prevent the frame of the car seat to be inspected from moving left and right, and retaining edges are provided on both sides of the frame of the car seat to be inspected; a plurality of clamping mechanisms are provided on the workbench to prevent the frame of the car seat to be inspected from moving upward; The detection mechanism includes a proximity sensor, a mounting seat, a check fixture, a lifting cylinder mounting frame, a lifting cylinder, a laser displacement sensor, a laser displacement sensor amplifier display screen, and a calibration block; The proximity sensor is arranged on the workbench surface and matches the position of the product to be inspected; The inspection fixture is a U-shaped inspection fixture, comprising a first short rod, a second short rod, and a long rod, wherein the first short rod and the second short rod are vertically fixed at the left and right ends of the long rod respectively; The mounting seat is fixed on the workbench surface, a rotating shaft is fixed on the mounting seat, an extension surface is provided on the left side of the first short rod, the rotating shaft is rotatably connected to the upper left corner of the front side of the extension surface, a positioning pin hole is provided on the rear side of the extension surface, the central axis of the positioning pin hole coincides with the central axis of the rotating shaft, a V-shaped positioning groove is provided on the top surface of the right side of the extension surface, the first short rod and the extension surface pass through the workbench surface and are located above the workbench surface; The jacking cylinder mounting frame is in the shape of an elongated strip. The jacking cylinder mounting frame is vertically arranged on the bottom surface of the workbench and is located at the left end of the long rod. The bottom of the jacking cylinder is hinged to the bottom of the jacking cylinder mounting frame. A connecting piece is provided on the rod head of the jacking cylinder, and the connecting piece is hinged to the right end of the long rod. A laser displacement sensor is provided on the top of the second short rod, a calibration block simulating the seat loading distance is provided on the top of the laser displacement sensor, through holes are provided on the workbench surface for the calibration block, the laser displacement sensor and the second short rod to pass through, a laser displacement sensor amplifier display screen is provided on the workbench surface, and the laser displacement sensor is connected to the laser displacement sensor amplifier display screen; The operating knob is arranged on one side of the table, and the operating knob, the positioning mechanism and the detection mechanism are all connected to the control system; The first short rod, the extension surface, the second short rod and the long rod are integrally formed; The workbench is provided with a buzzer, and the buzzer is connected to the control system.

2. The automatic measuring device for the movable clearance of the automobile seat frame according to claim 1 is characterized in that: It also includes a reset mechanism, including a tension spring fixing frame, a tension spring, a tension spring fixing rod, and a tension spring fixing block; the tension spring fixing frame is fixed to the bottom surface of the workbench and is located on the right front side of the through hole, the top end of the tension spring fixing rod is fixed on the second short rod and is perpendicular to the long rod, the tension spring fixing block is fixed to the lower end of the tension spring fixing rod, one end of the tension spring is connected to the tension spring fixing frame, and the other end is connected to the tension spring fixing block.

3. The automatic measuring device for the movable clearance of the automobile seat frame according to claim 1 is characterized in that: The clamping mechanism comprises a clamping cylinder and a clamping head. The clamping cylinder is fixed on the workbench surface with its rod head facing upwards. The clamping head is fixed on the rod head of the clamping cylinder. The outer covers of the clamping cylinder and the clamping head are provided with protective covers.

4. The automatic measuring device for the movable clearance of the automobile seat frame according to claim 1, 2 or 3, characterized in that: A first sliding mechanism is provided at the bottom of the V-shaped positioning block, including a first base, a first sliding rod arranged on the first base, a first sliding block is movably connected to the first sliding rod, and the V-shaped positioning block is fixed on the top of the first sliding block.

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