Complex part density measurement system

Abstract

The invention discloses a complex part density measurement system, and relates to the technical field of density detection. Through cooperation of the supporting conductive disc and the conductive sliding needle, the whole process of automatic detection of parts is realized. After the part is moved to the position above the water pool, the weight and density of the part can be accurately measured through dual detection of the force sensing resistor and the weighing module, errors caused by manual operation are avoided, and the detection precision and efficiency are improved; the design of the permanent magnet friction block and the ratchet mechanism is adopted, and the falling speed of the part is controlled, so that water splashing and measurement errors caused by the fact that the part rapidly sinks into water are avoided. The permanent magnet friction block limits the rotating speed of the outer ratchet wheel, so that the part stably and slowly enters water, and the stability of the measurement process and the accuracy of data are ensured; through overall coordination and cooperation, the density of a large number of parts can be detected in batches, and when the device is applied to factory part production, the ex-factory qualification rate of the parts can be effectively guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of density detection, in particular to a complex parts density measurement system. Background Art

[0002] At present, most of the parts density detection equipment on the market is manually operated, which has problems such as complex operation, low detection efficiency, and inaccurate data. These devices usually require manual hanging of parts on the detection device, and then detection to calculate the density of the parts. This operation method is not only time-consuming and labor-intensive, but also prone to measurement errors due to human factors. In addition, when the parts enter the water, the existing equipment cannot control the descent speed of the parts, which easily causes splashing and affects the accuracy of the measurement. At the same time, it is impossible to perform density detection on all parts in batches, and only random inspection can be used, which also cannot guarantee the qualified rate of parts production. Summary of the invention

[0003] In order to overcome the defects of the above-mentioned prior art, the present invention provides the following technical solutions: a complex part density measurement system, comprising a supporting conductive disk rotatably mounted on a supporting central rotating column, a plurality of measuring components arranged in an equidistant circular array are mounted on the lower surface of the supporting conductive disk, the measuring components comprising a hanging frame, a supporting buckle plate is arranged on the hanging frame, a force-sensitive resistor is overlapped on the supporting buckle plate, a T-shaped frame is overlapped on the force-sensitive resistor, a balancing mounting plate is fixed on the T-shaped frame, two parallel arranged winding drum brackets are fixedly mounted on the balancing mounting plate, a winding drum is rotatably mounted between the two winding drum brackets, a hanging wire is wound on the winding drum, and a ring for hanging parts is provided at the bottom end of the hanging wire.

[0004] Preferably, the supporting center rotating column is fixedly mounted on the base plate, a gear ring is fixedly mounted on the lower surface of the supporting center rotating column, a driving motor is fixedly mounted on the supporting center rotating column, and a gear meshing with the gear ring is fixedly mounted on the output shaft of the driving motor.

[0005] Preferably, a suspension beam is fixedly installed on the top of the supporting central rotating column, a cantilever is fixedly installed on the suspension beam through a force-bearing pull rod, a conductive sliding needle is provided at one end of the cantilever for vertical sliding along the direction of gravity, a spring is arranged around the circumferential surface of the conductive sliding needle, and both ends of the spring are respectively fixed to the top of the conductive sliding needle and the cantilever.

[0006] Preferably, the edge of the upper surface of the supporting conductive disk is provided with a triggering conductive surface, which is insulated from the supporting conductive disk body, wherein the bottom end of the conductive sliding needle is in sliding electrical cooperation with both the supporting conductive disk and the triggering conductive surface.

[0007] Preferably, a water supply pipe bracket is fixedly installed on the base plate, a water supply pipe is fixedly installed on the water supply pipe bracket, a water pool is also provided on the base plate, a weighing module is provided between the water pool and the base plate, for detecting the weight of the water inside the water pool, wherein the top end of the water supply pipe is located above the water pool, and can replenish water into the water pool.

[0008] Preferably, an outer limiting ring is fixedly installed on one of the winding reel brackets, and a slot is provided on the outer limiting ring, in which a permanent magnetic friction block is slidably installed, and an inner ratchet is coaxially provided on the inner side of the outer limiting ring and rotated with the winding reel bracket, the inner ratchet and the winding reel are fixedly fitted through a short transmission shaft, an outer ratchet is rotationally provided on the outer side of the inner ratchet, the outer ratchet rotates with the inner wall of the outer limiting ring, the outer ratchet cooperates with the permanent magnetic friction block by frictional magnetic force, and the inner ratchet and the outer ratchet form a ratchet mechanism.

[0009] Preferably, a pull-up motor is fixedly mounted on the other winding reel bracket, a sleeve shaft is fixedly mounted on the output shaft of the pull-up motor, hexagonal through holes of similar shapes are provided at the axis of the sleeve shaft and the winding reel, and hexagonal shafts are slidably arranged in the two hexagonal through holes, a limiting turntable is fixedly mounted on the hexagonal shaft, and raised patterns that can engage with each other are provided on the opposite surfaces of the limiting turntable and the winding reel bracket.

[0010] Preferably, an electromagnet is fixedly mounted on the housing of the pull-up motor, and a compression spring is rotatably arranged between the electromagnet and the opposite surface of the limiting turntable. The compression spring is wrapped around the outside of the sleeve shaft and the hexagonal prism shaft, wherein the electromagnet cooperates with the limiting turntable magnetically.

[0011] Compared with the prior art, the present invention has the following beneficial effects: (1) The present invention realizes the whole process of automatic detection of parts by supporting the cooperation of the conductive disk and the conductive sliding needle. After the parts are moved above the water pool, the weight and density of the parts can be accurately measured through the dual detection of the force-sensitive resistor and the weighing module, avoiding the error of human operation and improving the accuracy and efficiency of detection; (2) The present invention adopts the design of permanent magnetic friction block and ratchet mechanism, and avoids the splashing and measurement error caused by the rapid sinking of the parts into the water by controlling the speed of the parts' descent. The permanent magnetic friction block limits the rotation speed of the outer ratchet, allowing the parts to enter the water smoothly and slowly, thereby ensuring the stability of the measurement process and the accuracy of the data; (3) The present invention can perform batch detection of the density of a large number of parts through overall coordination and cooperation. Applying it in the production of factory parts can effectively ensure the qualified rate of parts leaving the factory. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0013] Figure 2 For the present invention Figure 1Schematic diagram of the structure at point A in the middle.

[0014] Figure 3 It is a schematic diagram of the gear structure of the present invention.

[0015] Figure 4 It is a schematic diagram of the structure of the measuring component of the present invention.

[0016] Figure 5 This is a cross-sectional view of the measurement component structure of the present invention.

[0017] Figure 6 For the present invention Figure 5 Schematic diagram of the structure at point B in the middle.

[0018] In the figure: 101-suspended beam; 102-tension rod; 103-cantilever; 104-conductive sliding needle; 105-spring; 106-support conductive disk; 107-trigger conductive surface; 108-tooth ring; 109-gear; 110-drive motor; 111-support center rotating column; 112-bottom plate; 201-hanging frame; 202-support buckle plate; 203-force sensitive resistor; 204-T-shaped frame; 205-balance mounting plate; 206-winding wire Disc; 207-transmission short shaft; 208-inner ratchet; 209-outer ratchet; 210-outer limiting ring; 211-permanent magnetic friction block; 212-pull-up motor; 213-electromagnet; 214-sleeve shaft; 215-extrusion spring; 216-hexagonal prism shaft; 217-limiting turntable; 218-winding reel bracket; 219-hoisting line; 220-ring; 301-water tank; 302-weighing module; 303-water supply pipe; 304-water supply pipe bracket. DETAILED DESCRIPTION

[0019] The following is combined with Figure 1-6 , and further illustrate the technical solution of the present invention through specific implementation methods.

[0020] The present invention provides a complex part density measurement system, comprising a supporting conductive disk 106 rotatably mounted on a supporting central rotating column 111, a plurality of measuring components arranged in an equidistant circular array are mounted on the lower surface of the supporting conductive disk 106, the measuring components comprising a hanging frame 201, a supporting buckle plate 202 is arranged on the hanging frame 201, a force sensitive resistor 203 is overlapped on the supporting buckle plate 202, a T-shaped frame 204 is overlapped on the force sensitive resistor 203, a balancing mounting plate 205 is fixed on the T-shaped frame 204, two parallel arranged winding drum brackets 218 are fixedly mounted on the balancing mounting plate 205, a winding drum 206 is rotatably mounted between the two winding drum brackets 218, a hanging line 219 is wound around the winding drum 206, and a ring 220 for hanging parts is arranged at the bottom end of the hanging line 219. The supporting center rotating column 111 is fixedly mounted on the bottom plate 112, a gear ring 108 is fixedly mounted on the lower surface of the supporting center rotating column 111, a driving motor 110 is fixedly mounted on the supporting center rotating column 111, and a gear 109 meshing with the gear ring 108 is fixedly mounted on the output shaft of the driving motor 110. A suspension beam 101 is fixedly mounted on the top of the supporting center rotating column 111, a cantilever 103 is fixedly mounted on the cantilever beam 101 through a force-bearing pull rod 102, a conductive sliding needle 104 is vertically slidably arranged at one end of the cantilever 103 along the direction of gravity, a spring 105 is arranged around the circumferential surface of the conductive sliding needle 104, and both ends of the spring 105 are respectively fixed to the top of the conductive sliding needle 104 and the cantilever 103. The edge of the upper surface of the supporting conductive disk 106 is provided with a trigger conductive surface 107, which is insulated from the supporting conductive disk 106 body, wherein the bottom end of the conductive sliding needle 104 is electrically matched with both the supporting conductive disk 106 and the trigger conductive surface 107 in sliding manner. A water supply pipe bracket 304 is fixedly mounted on the bottom plate 112, and a water supply pipe 303 is fixedly mounted on the water supply pipe bracket 304. A water pool 301 is also provided on the bottom plate 112, and a weighing module 302 is provided between the water pool 301 and the bottom plate 112 for detecting the weight of the water inside the water pool 301, wherein the top end of the water supply pipe 303 is located above the water pool 301, and can replenish water into the water pool 301. An outer limiting ring 210 is fixedly installed on one of the winding reel brackets 218, and a slot is set on the outer limiting ring 210, and a permanent magnetic friction block 211 is slidably installed in the slot. The inner side of the outer limiting ring 210 is also coaxially provided with an inner ratchet 208 that rotates with the winding reel bracket 218. The inner ratchet 208 is fixedly matched with the winding reel 206 through a transmission short shaft 207. An outer ratchet 209 is rotatably provided on the outer side of the inner ratchet 208. The outer ratchet 209 rotates with the inner wall of the outer limiting ring 210, and the outer ratchet 209 cooperates with the permanent magnetic friction block 211 by frictional magnetic force. The inner ratchet 208 and the outer ratchet 209 constitute a ratchet mechanism.A pull-up motor 212 is fixedly mounted on another winding drum bracket 218, and a sleeve shaft 214 is fixedly mounted on the output shaft of the pull-up motor 212. The sleeve shaft 214 and the winding drum 206 are provided with hexagonal prism holes of similar shapes at their axis centers, and hexagonal prism shafts 216 are slidably arranged in the two hexagonal prism holes, and a limiting turntable 217 is fixedly mounted on the hexagonal prism shaft 216. The limiting turntable 217 and the winding drum bracket 218 are provided with convex patterns that can mesh with each other on their opposite surfaces. An electromagnet 213 is fixedly mounted on the housing of the pull-up motor 212, and a compression spring 215 is rotatably arranged between the opposite surfaces of the electromagnet 213 and the limiting turntable 217. The compression spring 215 is arranged around the sleeve shaft 214 and the outer side of the hexagonal prism shaft 216, wherein the electromagnet 213 and the limiting turntable 217 are magnetically matched.

[0021] The parts that need to be tested for density are hung on the collar 220. At the beginning, the hoisting wire 219 on each reel 206 is wound in the reel 206, that is, the collar 220 is at the highest point. By controlling the rotation of the output shaft of the drive motor 110, the output shaft of the drive motor 110 can drive the gear 109 to rotate, the gear 109 rotates to drive the gear ring 108 to rotate, and the gear ring 108 rotates to drive the supporting conductive disk 106 to rotate, and the parts that need to be hung on the collar 220 are moved to the top of the pool 301. They need to line up in sequence. After the first part is tested, the supporting conductive disk 106 is rotated to rotate the next part to the top of the pool 301.

[0022] When the part rotates to the top of the pool 301, the conductive sliding needle 104 will contact the corresponding trigger conductive surface 107. After the conductive sliding needle 104 contacts the corresponding trigger conductive surface 107, the electromagnet 213 at the corresponding position will be activated. After the electromagnet 213 is energized, it will generate magnetic force, which attracts the limiting turntable 217, compressing the extrusion spring 215. At this time, the limiting turntable 217 and the winding drum bracket 218 are in a separated state, and the winding drum is pulled by the lifting line 219 under the action of the part's own gravity. 206 rotates, the rotation of the winding drum 206 will drive the inner ratchet 208 to rotate, and the rotation of the inner ratchet 208 will drive the outer ratchet 209 to rotate (the stuck direction of the ratchet), and because the permanent magnetic friction block 211 rubs against the outer ratchet 209, the permanent magnetic friction block 211 will limit the rotation speed of the outer ratchet 209, thereby reducing the rotation speed of the inner ratchet 208 and the winding drum 206, so that the part can slowly enter the water inside the pool 301, so that the part is completely submerged in the water, but does not have any contact with the inner wall of the pool 301. Prior to this, the weight of the part can be weighed, or it can be weighed by the set force sensitive resistor 203 to know the weight of the part.

[0023] When the part enters the water inside the pool 301, the water is subject to the buoyancy of the water, which causes the pressure detected by the force-sensitive resistor 203 to decrease, and the value of the force-sensitive resistor 203 decreases, and the value of the force-sensitive resistor 203 corresponds to the buoyancy of the part. At the same time, after the part enters the water inside the pool 301, the pressure detected by the weighing module 302 will increase, that is, the reaction force of the water on the buoyancy of the part. At this time, the two values ​​are compared. Only when they are consistent can the accuracy of the data be guaranteed. If they are inconsistent, they will be rearranged (to the last position of all parts). Since the buoyancy of the water on the part is equal to the weight of the water displaced, and the density of water is known, the volume of the water displaced can be calculated at this time, and the volume of the water displaced is equal to the volume of the part itself (regardless of the shape of the part, as long as it is not hollow), the density of the part can be calculated at this time.

[0024] When the first part inspection is completed, the conductive disk 106 is supported and rotated at a small angle. The rotation of the conductive disk 106 will make the conductive sliding needle 104 contact the body of the conductive disk 106 again (at the same time, the conductive sliding needle 104 also maintains contact with the trigger conductive surface 107). At this time, the corresponding pull-up motor 212 will be started to rotate (a contact button is provided on the ring 220. When the ring 220 moves to the highest point, the contact button is pressed. At this time, the pull-up motor 212 is powered off and no longer works, thus acting as a limit switch). The output shaft of the pull-up motor 212 drives the sleeve shaft 214 to rotate, the sleeve shaft 214 drives the hexagonal prism shaft 216 to rotate, and the hexagonal prism shaft 216 drives the winding drum 206 to rotate, and the lifting line 219 is wound onto the winding drum 206. At this time, since the cable reel 206 rotates in the opposite direction, the inner ratchet 208 rotates in the outer ratchet 209 without restriction, and the friction between the permanent magnetic friction block 211 and the outer ratchet 209 does not work. When the parts come out of the water, they will take away some water in the pool 301, reducing the water content in the pool 301. The weighing module 302 performs real-time detection, and then the water is replenished into the pool 301 through the water supply pipe 303. When the conductive sliding needle 104 rotates to a position completely separated from the trigger conductive surface 107, the electromagnet 213 is powered off, and the limiting turntable 217 contacts the cable reel bracket 218 again, making the hexagonal prism shaft 216 unable to rotate, and thus making the cable reel 206 unable to rotate. At this time, the collar 220 and the parts on the collar 220 are at the highest point, and the pull-up motor 212 is in a power-off state under the action of the contact button.

Claims

1. A complex parts density measurement system, characterized by: The invention comprises a supporting conductive disk (106) rotatably mounted on a supporting central rotating column (111); a plurality of measuring components arranged in an equidistant circular array are mounted on the lower surface of the supporting conductive disk (106); the measuring components comprise a hanging frame (201); a supporting buckle plate (202) is arranged on the hanging frame (201); a force sensitive resistor (203) is overlapped and arranged on the supporting buckle plate (202); a T-shaped frame (204) is overlapped and arranged on the force sensitive resistor (203); a balancing mounting plate (205) is fixed on the T-shaped frame (204); two parallel arranged winding drum brackets (218) are fixedly mounted on the balancing mounting plate (205); a winding drum (206) is rotatably mounted between the two winding drum brackets (218); a hanging line (219) is wound around the winding drum (206); and a ring (220) for hanging parts is arranged at the bottom end of the hanging line (219).

2. A complex parts density measurement system according to claim 1, characterized in that: The supporting center rotating column (111) is fixedly mounted on the bottom plate (112); a gear ring (108) is fixedly mounted on the lower surface of the supporting center rotating column (111); a driving motor (110) is fixedly mounted on the supporting center rotating column (111); and a gear (109) meshing with the gear ring (108) is fixedly mounted on the output shaft of the driving motor (110).

3. A complex parts density measurement system according to claim 2, characterized in that: A suspension beam (101) is fixedly installed on the top of the supporting central rotating column (111), a cantilever (103) is fixedly installed on the suspension beam (101) via a force-bearing pull rod (102), a conductive sliding needle (104) is arranged on one end of the cantilever (103) for vertical sliding along the direction of gravity, a spring (105) is arranged around the circumferential surface of the conductive sliding needle (104), and two ends of the spring (105) are respectively fixed to the top of the conductive sliding needle (104) and the cantilever (103).

4. A complex parts density measurement system according to claim 3, characterized in that: The edge of the upper surface of the supporting conductive disk (106) is provided with a triggering conductive surface (107), and the triggering conductive surface (107) is insulated from the supporting conductive disk (106) body, wherein the bottom end of the conductive sliding needle (104) is in sliding electrical cooperation with both the supporting conductive disk (106) and the triggering conductive surface (107).

5. A complex parts density measurement system according to claim 4, characterized in that: A water supply pipe bracket (304) is fixedly mounted on the bottom plate (112), and a water supply pipe (303) is fixedly mounted on the water supply pipe bracket (304). A water pool (301) is also provided on the bottom plate (112), and a weighing module (302) is provided between the water pool (301) and the bottom plate (112) for detecting the weight of water inside the water pool (301). The top end of the water supply pipe (303) is located above the water pool (301), and water can be added to the water pool (301).

6. A complex parts density measurement system according to claim 5, characterized in that: An outer limiting ring (210) is fixedly mounted on one of the winding reel brackets (218), and a slot is provided on the outer limiting ring (210), in which a permanent magnetic friction block (211) is slidably mounted. An inner ratchet (208) is coaxially arranged on the inner side of the outer limiting ring (210) and is rotatably matched with the winding reel bracket (218). The inner ratchet (208) is fixedly matched with the winding reel (206) via a transmission short shaft (207). An outer ratchet (209) is rotatably matched on the outer side of the inner ratchet (208). The outer ratchet (209) is rotatably matched with the inner wall of the outer limiting ring (210), and the outer ratchet (209) is frictionally matched with the permanent magnetic friction block (211). The inner ratchet (208) and the outer ratchet (209) form a ratchet mechanism.

7. A complex parts density measurement system according to claim 6, characterized in that: A pull-up motor (212) is fixedly mounted on another winding reel bracket (218), and a sleeve shaft (214) is fixedly mounted on the output shaft of the pull-up motor (212). The sleeve shaft (214) and the winding reel (206) are provided with hexagonal prism through holes of similar shapes at the axis centers, and hexagonal prism shafts (216) are slidably arranged in the two hexagonal prism through holes. A limiting turntable (217) is fixedly mounted on the hexagonal prism shaft (216), and convex patterns that can mesh with each other are provided on the opposing surfaces of the limiting turntable (217) and the winding reel bracket (218).

8. A complex parts density measurement system according to claim 7, characterized in that: An electromagnet (213) is fixedly mounted on the housing of the pull-up motor (212), and a compression spring (215) is rotatably arranged between the opposite surfaces of the electromagnet (213) and the limiting turntable (217). The compression spring (215) is sleeved around the outer sides of the sleeve shaft (214) and the hexagonal prism shaft (216), wherein the electromagnet (213) and the limiting turntable (217) are magnetically matched.

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