Thickness detection device

Abstract

The utility model discloses a thickness detection device. The device comprises a moving unit and a detecting unit, according to the moving unit, the bottom face of the rotating part is connected with the lifting part, and a piston shaft has the freedom degree of axial and longitudinal movement on the moving unit. The detection unit is symmetrical in left-right structure and comprises a moving part for transverse displacement above the support, a detection part for longitudinal movement below the support and a sensor. According to the scheme, the moving unit, the detection unit and the sensor are combined, feeding and thickness detection of the piston shaft are achieved through automatic integration, and the production line efficiency is greatly improved; according to the profiling table provided by the scheme, the stability of the piston shaft in the placing and moving process is ensured, and deviation generated when a detection unit measures the thickness due to shaking in the moving process is avoided.

Description

Technical Field

[0001] This solution relates to the technical field of piston assembly, and particularly to a thickness detection device. Background Art

[0002] A piston is a mechanical part that reciprocates along the axis of the cylinder in the cylinder block of reciprocating piston internal combustion engines, compressors, pumps and other machinery. There are three forms of pistons: disc-shaped, cylindrical and cylindrical. During the assembly process, the piston needs to be assembled on the piston shaft first and then fixed in the piston flywheel. During the assembly process of the piston shaft, piston flywheel and piston, it is necessary to keep each component in the correct position, and there are high requirements for accuracy.

[0003] During the assembly process of the piston shaft, piston flywheel and piston, it is necessary to measure the thickness of the piston shaft to determine the size of the piston inner gasket, and the automation of the production line cannot be achieved in the existing technology.

[0004] Therefore, a device is needed to realize the feeding and thickness detection of the piston shaft through automated integration. Summary of the Invention

[0005] To solve the above problems, this solution provides a thickness detection device that integrates the feeding and measurement functions of the piston shaft.

[0006] To achieve the above object, the technical solution adopted in this solution is: a thickness detection device, including a moving unit and a detection unit; for the moving unit, the bottom surface of the rotating part is connected to the lifting part, and the piston shaft has degrees of freedom of axial and longitudinal movement on the moving unit; the left and right structures of the detection unit are symmetrical, including a moving part with horizontal displacement above the bracket, a detection part with vertical movement below, and a sensor.

[0007] Further, for the rotating part, a first actuator is connected below the workbench; a first through hole is provided on each side of the workbench, and a profiling table is provided at the top of the first through hole.

[0008] Further, the profiling table is distributed with limit protrusions at the four corners, a second through hole is provided in the middle, and grooves are provided on both sides.

[0009] Further, a first fixing table is fixed at the bottom of the first actuator, the second actuator is fixed in the middle of the second fixing table, and the top is fixed to the bottom surface of the first fixing table.

[0010] Further, the first fixing table further includes connecting rods fixed at the four corners of the bottom, the connecting rods pass through and are limited in the second fixing table, and a connecting block is connected to the bottom of two connecting rods on each side.

[0011] Further, the third actuator of the moving part is fixed to the bracket through a fixing frame, and the execution end fixes the first connecting piece to connect the second connecting piece. The first sliders on both sides of the top of the second connecting piece are slidably connected to the first slide rail on the bottom surface of the bracket, and the detection part is fixed to the bottom of the second connecting piece.

[0012] Further, the top of the third connecting piece of the detection part is connected to the second connecting piece, and the fourth connecting piece perpendicular to the bottom surface is fixedly connected to the fifth connecting piece. The second slider on the back of the detection component is movably connected to the second slide rail of the fifth connecting piece.

[0013] Further, the detection component, the first detection frame and the second detection frame are of an L-shaped structure, and the two brackets are slidably connected. The length of the longitudinal bracket of the second detection frame is less than that of the first detection frame.

[0014] Further, the back of the first detection frame is fixed with a second slider, the front is fixed with a third slide rail, and both sides are connected with a fourth actuator. The execution end of the fourth actuator is fixed downward on the sixth connecting piece, and a first contact convex part is arranged at the top outside the transverse bracket.

[0015] Further, the back of the second detection frame is fixed with a third slider and is slidably connected to the third slide rail. The seventh connecting piece fixed to the front is fixed on the fourth actuator, and sensors are fixed on the eighth connecting pieces on both sides. A second contact convex part is arranged at the bottom outside the transverse bracket.

[0016] In summary, the present solution has the following advantages:

[0017] The combination of the moving unit, the detection unit and the sensor provided by the present solution realizes the feeding and thickness detection of the piston shaft through automatic integration, greatly improving the production line efficiency;

[0018] The profiling table provided by the present solution ensures the stability of the piston shaft during placement and movement, avoiding shaking during movement, which may cause deviation in the thickness measurement by the detection unit. Description of the Drawings

[0019] Figure 1 is a schematic diagram of the piston shaft;

[0020] Figure 2 is a schematic diagram of a thickness detection device;

[0021] Figure 3 is a schematic diagram of the moving unit;

[0022] Figure 4 is a schematic diagram of the workbench;

[0023] Figure 5 is a schematic diagram of the profiling table;

[0024] Figure 6It is a schematic diagram of the lifting part;

[0025] Figure 7 It is a schematic diagram of the detection unit;

[0026] Figure 8 It is an exploded view of the detection unit;

[0027] Figure 9 It is an exploded view of the detection component;

[0028] Wherein:

[0029] 1. Piston shaft;

[0030] 100. Moving unit;

[0031] 110. Rotating part; 111. Workbench; 1111. Connecting hole; 1112. First through hole; 1113. First mounting hole; 112. First actuator; 113. Profiling table; 1131. Limiting convex part; 1132. Second through hole; 1133. Second mounting hole;

[0032] 120. Lifting part; 121. First fixed table; 122. Second actuator; 123. Second fixed table; 124. Connecting rod; 125. Connecting block;

[0033] 200. Detection unit; 201. Bracket; 2011. First slide rail;

[0034] 210. Moving part; 211. Third actuator; 212. Fixed frame; 213. First connecting piece; 214. Second connecting piece; 215. First slider;

[0035] 220. Detection part; 221. Third connecting piece; 222. Fourth connecting piece; 223. Fifth connecting piece; 2231. Second slide rail; 224. Detection component; 2241. First detection frame; 22411. Second slider; 22412. Third slide rail; 22413. Sixth connecting piece; 22414. First contact convex part; 2242. Second detection frame; 22421. Third slider; 22422. Seventh connecting piece; 22423. Eighth connecting piece; 22424. Second contact convex part; 225. Fourth actuator;

[0036] 230. Sensor. Specific implementation mode

[0037] The following further describes the solution in conjunction with the drawings and embodiments:

[0038] Embodiment 1:

[0039] A thickness detection device, as Figure 2-9 shown, includes a moving unit 100 and a detection unit 200.

[0040] As Figure 2-6 shown, for the moving unit 100, the bottom surface of the rotating part 110 is connected to the lifting part 120, and the piston shaft 1 has degrees of freedom of axial and longitudinal movement on the moving unit 100.

[0041] As Figure 2 and 3 shown, the rotating part 110 includes a workbench 111 and a first actuator 112 below.

[0042] As Figure 4 shown, for the workbench 111, the middle connecting hole 1111 fixes the first actuator 112, and a first through hole 1112 is provided on each side and a first mounting hole 1113 for fixing the profiling table 113.

[0043] As Figure 5 shown, the profiling table 113 has limit convex parts 1131 distributed at the four corners, and a second through hole 1132 is provided in the middle. For the second through hole 1132, the bottom corresponds to the first through hole 1112, grooves are provided on both sides, and the second mounting holes 1133 evenly distributed around correspond to the first mounting holes 1113.

[0044] In the structural setting of this solution, the profiling table 113 and the limit convex parts 1131 ensure the stability of the piston shaft 1 during placement and movement, and avoid shaking during movement, resulting in deviation when the detection unit 200 measures the thickness.

[0045] Specifically, the shaft body below the piston shaft 1 is placed in the second through hole 1132, the protruding part with a gradually shrinking bottom surface fits the second through hole 1132, the top surface of the bottommost part fits the top surface of the profiling table 113, and the protruding parts around the side surface lean against the limit convex parts 1131.

[0046] The bottom of the first actuator 112 is connected to the lifting part 120. As Figure 6 shown, the lifting part 120 includes a first fixing table 121 at the bottom of the first actuator 112. The central part of the bottom of the first fixing table 121 fixes the execution end of the second actuator 122, and the second actuator 122 is fixed in the middle of the second fixing table 123.

[0047] The first fixing table 121 also includes connecting rods 124 fixed at the four corners of the bottom. The connecting rods 124 pass through and are limited in the second fixing table 123, and the bottoms of the two connecting rods 124 on each side are connected by a connecting block 125. The connecting block 125 limits the rising height of the connecting rods 124.

[0048] In the structural setup of this solution, the first actuator 112 drives the workbench 111 to rotate axially, and the rotation angle each time is 180°. In this embodiment, the first actuator 112 is a swinging rotary cylinder, which can be directly purchased from Yueqing Mailer Pneumatic Co., Ltd., and the model is MSQB-3A;

[0049] In the structural setup of this solution, the second actuator 122 drives the rotating part 110 to move longitudinally. In this embodiment, the second actuator 122 is a cylinder, which can be directly purchased from Yueqing Mailer Pneumatic Co., Ltd., and the model is SMC type stainless steel mini cylinder CDJ2B 16.

[0050] Specifically, the piston shaft 1 is placed on the profiling table 113. When the first actuator 112 is started, it drives the workbench 111 to drive the profiling table 113 to rotate 180°. When the piston shaft 1 rotates to the bottom of the detection unit 200, the second execution unit is started to drive the workbench 111 to drive the piston shaft 1 on the profiling table 113 to move upward;

[0051] During the reset process, the second actuator 122 drives the profiling table 113 to move downward, and the first actuator 112 drives the profiling table 113 to rotate 180°, and the new piston shaft 1 rotates to the bottom of the detection unit 200.

[0052] As Figure 7 shown, the left and right structures of the detection unit 200 are symmetrical, and it includes a moving part 210 above the bracket 201, a detection part 220 and a sensor 230 below.

[0053] In the structural setup of this solution, the left and right structures of the detection unit 200 are symmetrical.

[0054] For the moving part 210, the third actuator 211 is fixed on the bracket 201 through a fixing frame 212. The execution end of the third actuator 211 fixes the first connecting piece 213. The bottom of the first connecting piece 213 fixes the second connecting piece 214. The two sides of the top of the second connecting piece 214 also include first sliders 215. The first sliders 215 are slidably connected to the first slide rail 2011 on the bottom surface of the bracket 201. The bottom of the second connecting piece 214 fixes the detection part 220.

[0055] The third actuators 211 are arranged oppositely, and the execution ends face outwards. After being started, they drive the detection part 220 to move horizontally left and right. In this embodiment, the third actuator 211 is a cylinder, which can be directly purchased from Yueqing Mailer Pneumatic Co., Ltd., and the model is CDQMB32;

[0056] Specifically, when the third actuator 211 is started, the first connecting piece 213 fixed to the execution end drives the second connecting piece 214 to drive the detection part 220 to move outwards, away from the piston shaft 1;

[0057] The first connecting member 213 with a fixed execution end drives the second connecting member 214 to drive the detection unit 220 to move inward, approaching the piston shaft 1.

[0058] As Figure 7-9 shown, the detection unit 220 includes a third connecting member 221. The top of the third connecting member 221 is connected to the second connecting member 214, and the bottom surface is vertically fixed with a fourth connecting member 222. A second slider 22411 on the back of the detection assembly 224 is movably connected to the second slide rail 2231 of the fifth connecting member 223, and the back of the fifth connecting member 223 is fixed to the fourth connecting member 222.

[0059] The detection assembly 224 includes a first detection frame 2241 and a second detection frame 2242. The first detection frame 2241 and the second detection frame 2242 are L-shaped structures. The second detection frame 2242 is slidably connected to the first detection support 201, and the length of the longitudinal support 201 is less than that of the first detection frame 2241.

[0060] On the back of the first detection frame 2241, a second slider 22411 is fixed, on the front, a third slide rail 22412 is fixed, and on both sides, a fourth actuator 225 is connected. The execution end of the fourth actuator 225 faces downward and is fixed to a sixth connecting member 22413. A first contact convex portion 22414 is provided at the top outside the transverse support 201.

[0061] On the back of the second detection frame 2242, a third slider 22421 is fixed and slidably connected to the third slide rail 22412. A seventh connecting member 22422 fixed on the front is fixed to the fourth actuator 225. Sensors 230 are fixed on both sides of the eighth connecting member 22423. A second contact convex portion 22424 is provided at the bottom outside the transverse support 201.

[0062] The execution end of the fourth actuator 225 faces downward and is fixed to the sixth connecting member 22413. After being started, it drives the second detection frame 2242 to move up and down. In this embodiment, the fourth actuator 225 is a cylinder, which can be directly purchased from Yueqing Mailer Pneumatic Co., Ltd., and the model is CDQMB32;

[0063] The first contact convex part 22414 and the second contact convex part 22424 correspond to each other vertically. In this solution, a total of four contact points are arranged up and down on the piston shaft 1. When contacting the piston shaft 1, the movement stops. At this time, the sensor 230 measures the downward displacement of the second contact convex part 22424 and sends it to the piston gasket feeding unit (not shown). The sensor 230 is a height sensor 230 in this embodiment. The height sensor 230 is a prior art and can be directly purchased from the manufacturer Omron (China) Co., Ltd. The model is the E3S_CL2 limited reflection type photoelectric sensor 230. As common technical knowledge well-known to those skilled in the art, it will not be elaborated here.

[0064] There is also a distance sensor 230 (not shown) on the production line. The infrared ray of the distance sensor 230 is aligned with the middle of the first contact convex part 22414 and the second contact convex part 22424, which is used to detect whether there is a piston shaft 1 in the middle, and send signals to the first actuator 112, the second actuator 122, the third actuator 211, and the fourth actuator 225 respectively. When the measurement of a piston shaft 1 is completed, the distance sensor 230 sends a signal to the transfer device (not shown), and the transfer device sends the piston shaft 1 to the next working station.

[0065] The working principles of the first actuator 112, the second actuator 122, the third actuator 211, and the fourth actuator 225 are prior arts. As common technical knowledge well-known to those skilled in the art, it will not be elaborated here either.

[0066] Specifically, after the fourth actuator 225 is started, the execution end remains stationary. Under the relative action of the force, the fourth actuator 225 moves in the reverse direction, and the seventh connecting piece 22422 fixed on the fourth actuator 225 drives the second detection frame 2242 to displace upward, and vice versa downward. When the second detection frame 2242 descends and touches the piston shaft 1, the movement stops, and the sensor 230 measures and makes a feedback.

[0067] Further illustrate in combination with its usage mechanism:

[0068] The piston shaft 1 is placed on the profiling table 113, and the first actuator 112 is started to drive the piston shaft 1 on the profiling table 113 to rotate 180°;

[0069] When the piston shaft 1 rotates to the bottom of the detection unit 200, the second actuator 122 is started to drive the piston shaft 1 on the profiling table 113 to move upward;

[0070] After the distance sensor 230 detects the piston shaft 1, the third actuator 211 is started, and the execution end drives the detection part 220 to move inward until the four upper and lower contact points move to the specified measurement positions;

[0071] The second actuator 122 drives the profiling table 113 to reset. The piston shaft 1 to be measured lands on the four first contact protrusions 22414 at the bottom. Meanwhile, the feeding unit (not shown) of the piston shaft 1 completes feeding. The first actuator 112 drives the profiling table 113 to rotate 180°. The new piston shaft 1 rotates to the bottom of the detection unit 200.

[0072] The fourth actuator 225 is activated, and the second detection bracket 2242 moves downward and stops moving when the second contact protrusion 22424 touches the piston shaft 1. At this time, the height sensor 230 measures the downward displacement distance of the second contact protrusion 22424 and sends it to the piston gasket feeding unit.

[0073] The distance sensor 230 sends a signal to the transfer device (not shown), and the transfer device sends the piston shaft 1 to the next station.

[0074] The fourth actuator 225 is activated, and the second detection bracket 2242 moves upward until it resets.

[0075] The third actuator 211 is activated, and the execution end drives the detection unit 220 to move outward until it resets.

[0076] The second actuator 122 is activated, driving the new piston shaft 1 on the profiling table 113 to move upward and repeating the above actions.

[0077] In summary, the combination of the moving unit, detection unit, and sensor provided in this application realizes the feeding and thickness detection of the piston shaft through automated integration, greatly improving the production line efficiency.

[0078] The profiling table provided in this application ensures the stability of the piston shaft during placement and movement, avoiding shaking during movement, which may cause deviation in the thickness measurement by the detection unit.

[0079] The above embodiments are only for illustrating the technical concept and features of this solution, and the purpose is to enable those familiar with this technology to understand the content of this solution and implement it accordingly. It should not be used to limit the protection scope of this solution. Any equivalent transformation or modification made according to the spirit and essence of this solution should be covered within the protection scope of this solution.

[0080] In the description of this solution, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components.

[0081] For those of ordinary skill in the art, the specific meanings of the above terms in this solution can be understood according to specific circumstances.

[0082] It should be understood that the above embodiments are merely exemplary and not restrictive. Without departing from the basic principles of this solution, various obvious or equivalent modifications or substitutions that those skilled in the art can make to the above details will all be included within the protection scope of this solution.

Claims

1. A thickness detection device, characterized in that: It comprises a moving unit (100) and a detection unit (200); The bottom surface of the rotating part (110) of the mobile unit (100) is connected to the lifting part (120), and the piston shaft (1) has axial and longitudinal movement freedom on the mobile unit (100); The detection unit (200) has a left-right symmetrical structure, and comprises a moving part (210) for transverse displacement above the bracket (201) and a detection part (220) for longitudinal displacement below the bracket (201), as well as a sensor (230).

2. The thickness detection device according to claim 1, characterized in that: The rotating part (110) and the working table (111) are connected to a first actuator (112) below; a first through hole (1112) is respectively arranged on the left and right sides of the working table (111), and a profiling table (113) is arranged on the top of the first through hole.

3. The thickness detection device according to claim 2, characterized in that: The profiling platform (113) has limiting convex parts (1131) distributed at the four corners, a second through hole (1132) is arranged in the middle and grooves are arranged on both sides.

4. The thickness detection device according to claim 2, characterized in that: The first actuator (112) is fixed at its bottom to a first fixed platform (121), the second actuator (122) is fixed in the middle of a second fixed platform (123), and the top is fixed to the bottom surface of the first fixed platform (121).

5. The thickness detection device according to claim 4, characterized in that: The first fixed platform (121) further comprises connecting rods (124) fixed at the four corners of the bottom, the connecting rods (124) pass through and are limited in the second fixed platform (123), and the bottoms of the two connecting rods (124) on each side are connected to a connecting block (125).

6. The thickness detection device according to claim 1, characterized in that: The third actuator (211) of the moving part (210) is fixed on the bracket (201) through a fixing frame (212), and the actuator end fixes a first connecting piece (213) connected to a second connecting piece (214), first sliding blocks (215) on both sides of the top of the second connecting piece (214) are slidably connected to the first sliding rails (2011) on the bottom surface of the bracket (201), and the bottom of the second connecting piece (214) is fixed to the detection part (220).

7. The thickness detection device according to claim 6, characterized in that: The third connecting member (221) of the detection part (220) is connected to the second connecting member (214) at the top, and is vertically fixedly connected to the fourth connecting member (222) of the fifth connecting member (223) at the bottom, and the second slide rail (2231) of the fifth connecting member (223) is movably connected to the second sliding block (22411) on the back of the detection component (224).

8. The thickness detection device according to claim 7, characterized in that: The detection assembly (224), the first detection frame (2241) and the second detection frame (2242) are L-shaped structures, and the two frames are slidably connected, and the length of the longitudinal frame (201) of the second detection frame (2242) is smaller than that of the first detection frame (2241).

9. The thickness detection device according to claim 8, characterized in that: The first detection frame (2241) has a second slider (22411) fixed on the back, a third slide rail (22412) fixed on the front, and fourth actuators (225) connected on both sides. The actuator end of the fourth actuator (225) is fixed downward on the sixth connecting piece (22413), and a first contact protrusion (22414) is provided on the top of the outer side of the transverse bracket (201).

10. The thickness detection device according to claim 8, characterized in that: The second detection frame (2242) is slidably connected to a third slider (22421) fixed on the back and a third slide rail (22412), a seventh connecting member (22422) fixed on the front is fixed on a fourth actuator (225), a sensor (230) is fixed on the eighth connecting members (22423) on both sides, and a second contact protrusion (22424) is provided at the bottom of the outer side of the transverse bracket (201).

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