Blank size detection device

Abstract

The present application relates to detection device technical field, disclose a kind of blank size detection device, including airtight box, air cavity is equipped in airtight box, air pressure sensor is fixedly connected in airtight box, clamp assembly is slidably connected on airtight box, clamp assembly includes chuck, chuck includes fixed part and the movable part articulated at the both ends of fixed part, movable part is slidably connected with buffer portion at one end away from fixed part, detection cavity is equipped between two clamp assemblies, air hole is equipped in detection cavity on airtight box, support frame is fixedly connected on one side of airtight box, pusher assembly is installed on support frame, pusher assembly includes pusher frame and the air cylinder of drive pusher frame to detection cavity moves, transmission assembly is connected between pusher frame and chuck, clamp assembly is screw-connected with adjusting assembly at the bottom of airtight box.The present application has the following advantages and effects: it is convenient to quickly detect whether blank size is qualified, and it is suitable for detecting different sizes of blank, save time and effort.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of detection devices, in particular to a blank part size detection device. BACKGROUND

[0002] Automobiles are now essential means of transportation for people. Blank parts are needed in the process of manufacturing cars. Blank parts are raw materials that have not been processed, and can also refer to the part before the completion of the finished product. Automobile manufacturing belongs to mass production, and the required blank requires small processing amount, uniformity, and tight material. The size of the blank part required for processing different parts is different. If the actual size of the blank does not match the required size, improper processing or unqualified product size may occur during subsequent processing. The existing detection of whether the size is unqualified usually adopts manual detection. This measurement process is more troublesome and labor-intensive. Therefore, a device that can quickly screen whether the blank part is qualified is needed. SUMMARY

[0003] The purpose of the present application is to provide a blank part size detection device, which has the effect of quickly detecting whether the blank part size is qualified.

[0004] The above technical purpose of the present application is realized by the following technical scheme: airtight box, air cavity is arranged in the airtight box, the air cavity is communicated with the air pipe, the air pipe is communicated with the air source at the end away from the airtight box, the airtight box is fixedly connected with the air pressure sensor, the airtight box is slidably connected with the clamp assembly, the clamp assembly is arranged as two symmetrical ones, the clamp assembly includes a chuck, the chuck includes a fixed part and a movable part hinged at both ends of the fixed part, the movable part is slidably connected with a buffer part at the end away from the fixed part, two clamp assemblies are arranged as a detection cavity, the airtight box is provided with an air hole in the detection cavity, the airtight box is fixedly connected with a support frame on one side, the support frame is installed with a pushing assembly, the pushing assembly includes a push plate frame and a cylinder driving the push plate frame to move to the detection cavity, the push plate frame and the chuck are connected with a transmission assembly, and the clamp assembly is threadedly connected with an adjusting assembly at the bottom of the airtight box.

[0005] By adopting the technical scheme, the to-be-tested piece is placed in front of the push plate frame, the cylinder drives the push plate frame to move the to-be-tested piece forward, and the to-be-tested piece is moved into the detection cavity; after the to-be-tested piece is moved into the detection cavity, the movable parts at both ends of the chuck fixing part are rotated into the detection cavity, the two chucks symmetrically push the to-be-tested piece to the middle of the detection cavity, the air hole is located at the bottom of the blank to-be-tested piece, the air hole is in the shape of an arc that matches the contour of the blank to-be-tested piece, then the air source supplies air to the air supply cavity through the air pipe, when the to-be-tested piece can completely cover the air hole in the detection cavity, the air supply cavity is a sealed space, the air pressure in the air supply cavity increases and stops supplying air, and the air pressure value remains unchanged; when the size of the to-be-tested piece is smaller than the standard size, the blank to-be-tested piece cannot completely cover the air hole, the air supply cavity is in an open state, and the air hole is not covered, and air leaks out; when the air source supplies air to the air supply cavity, the air pressure in the air supply cavity is basically unchanged and equivalent to atmospheric pressure, or the air pressure gradually decreases to be equivalent to atmospheric pressure after the air supply stops, and the air pressure value in the air supply cavity remains unchanged; the detection device can automatically align the air hole without manual operation, the to-be-tested piece is automatically located in the middle of the detection cavity under the pushing and adjusting of the two chucks on the left and right sides after being pushed into the detection cavity, and the size of the to-be-tested piece can be judged according to the change of the air pressure in the air supply cavity after air supply.

[0006] Further provided in the application is that the transmission assembly comprises a rack fixedly connected to both ends of the push plate frame and extending to the chuck, the rack is engaged with gear one, the middle of the gear one is fixedly connected with a rotating shaft, the rotating shaft is fixedly connected with gear two, the edge of the gear two is provided with a part with teeth and a part without teeth, the gear two is engaged with gear three, and the gear three is fixedly connected to the top of the movable part.

[0007] By adopting the technical scheme, when the cylinder drives the push plate frame to move forward, the rack on both sides is engaged with gear one, so that the rack drives the two gears one to rotate in different directions when the rack moves forward, the rack drives the rotating shaft to rotate when the gear one rotates, the rotating shaft is connected to the fixed part, the rotating shaft drives the gear two to rotate, the toothed part of the gear two drives the gear three to rotate when the gear two rotates, the gear three drives the movable parts at both ends to rotate in the direction away from the detection cavity, the rotating directions of the movable parts at both ends of the same chuck are opposite, and the movable parts are flush with the fixed part after rotation, then the gear two rotates to the part without teeth, and the gear three is no longer driven to rotate, at the same time, the push plate frame pushes the to-be-tested piece into the detection cavity, then the cylinder returns, drives the gear two to rotate in the opposite direction, drives the movable part to rotate in the direction close to the detection cavity and push the blank when the gear two rotates to the toothed part and is engaged with the gear three, and the two chucks rotate in the direction close to the detection cavity at the same time, push the blank to the middle, and fix the blank; when the second to-be-tested blank is placed in front of the push plate frame and the push plate frame continues to push, the second to-be-tested piece can push the first to-be-tested piece in the detection cavity out by itself, and then the device can continue to detect the size of the second to-be-tested piece.

[0008] The further arrangement of the present application is that each of the two clamp assemblies further comprises a connecting frame fixedly connected with the fixed part, the adjusting assembly comprises a threaded rod threadedly connected with the connecting frame and a motor driving the threaded rod to rotate, the connection between the threaded rod and the connecting frame in the two clamp assemblies is respectively provided with threads with opposite rotation directions, the connecting frame extends into the airtight box at an end away from the fixed part and is fixedly connected with a movable plate in the airtight box and slidingly connected with the airtight box, the movable plates on both sides and the inner walls of the airtight box on both sides enclose the ventilation cavity, the push plate frame comprises a fixed frame in the middle and movable frames slidingly connected with both ends of the fixed frame, and the rack is fixedly connected with the movable frame and slidingly connected with the connecting frame.

[0009] By adopting the above technical scheme, the distance between the two clamp assemblies, i.e., the size of the detection cavity, is adjusted according to the standard value size range of the blank to be detected, the motor is started, the motor drives the threaded rod to rotate, the threaded rod drives the two clamp assemblies to move in opposite directions, the threaded rod drives the connecting frames on both sides to move together with the movable plates, the movable plates move in the airtight box, and the movable plates on both sides always enclose a sealed space with the inner walls of the airtight box on the other sides when moving, so that the ventilation cavity always maintains a sealed state without air leakage of the air hole, and at the same time, when the clamp assemblies move, the clamp assemblies drive the movable frames to move, so that the width of the push plate frame can also be adjusted according to the size of the blank, i.e., even when the size of the blank changes, the blank can be placed in front of the push plate frame and pushed into the detection cavity by the push plate frame, and then moved to the middle part under the pushing of the left and right clamp assemblies for size detection work, thereby increasing the size application range and flexibility of the device.

[0010] The further arrangement of the present application is that the movable part is provided with a sliding groove leading to the fixed part, a sliding rod is hingedly connected in the sliding groove, a pressing block is hingedly connected at an end of the sliding rod, a spring one is fixedly connected between the pressing block and the sliding groove, and an air ventilation switch is installed in the sliding groove in the sliding direction of the pressing block.

[0011] When the movable part and the fixed part are located on the same straight line, the sliding rod is in a flat state in the sliding groove and does not affect the entry of the measured part into the detection cavity, the cylinder drives the push plate frame to move forward, the rack drives the gear three through the gear two, thereby driving the movable part to rotate, when the movable part rotates to the position where the movable part and the fixed part are located on the same straight line, the sliding rod is in a flat state, at this time, the gear two rotates to the non-toothed part and no longer drives the movable part to rotate, the measured blank part is pushed into the detection cavity, when the cylinder returns, the gear two is driven to rotate to the toothed part and engages with the gear three, the gear three rotates to drive the movable part to rotate, when the movable part rotates, the pressing block is driven to move in the sliding groove through the sliding rod, the spring one makes the pressing block not separate from the sliding groove, when the movable part rotates to the maximum angle, the pressing block is pressed on the air switch, at this time, the measured blank part has also been adjusted and pushed to the middle part of the detection cavity, and the air switch controls the air source to ventilate into the air-tight cavity, whether the blank detection part meets the standard is judged by the value change of the air pressure sensor, and this process can realize that the air source ventilates into the air-tight cavity only when the measured part is placed in the air-tight cavity, and can reduce the output waste of the air source.

[0012] The further setting of the present application is that the movable part is provided with a buffer cavity for the buffer part to slide into, a spring two is fixedly connected between the buffer part and the buffer cavity, a detection block is fixedly connected to the buffer part, and a proximity sensor is fixedly connected to the movable part and senses the detection block.

[0013] When the size of the blank part is smaller than the standard value, the blank part cannot completely block the air hole, and the air hole leaks, which can be judged according to the air pressure sensor; when the size of the blank part is larger than the standard value, the blank part can completely block the air hole, but at this time, the angle of the movable part in the chuck does not change, when the size of the blank part is large, the outer wall of the blank part can extrude the buffer part into the buffer cavity, and the detection block fixedly connected to the buffer part moves, which can allow the size of the blank part to be larger than the standard value within an error range, when the error range is exceeded, the detection block approaches the proximity sensor, and the proximity sensor sends a signal to indicate that the size of the blank part is too large; the position of the proximity sensor on the movable part can be adjusted according to the allowable error range; after the blank part leaves the detection cavity, the buffer part is pushed out of the buffer cavity by the spring two in the buffer cavity.

[0014] The further setting of the present application is that the proximity sensor and the air pressure sensor are connected with a display.

[0015] Through the above technical scheme, the proximity sensor detects whether the size of the blank part is too large and sends a signal to the display, and the air pressure sensor outputs the value change in the ventilation cavity through the display.

[0016] The further setting of the present application is that the air hole is provided as a plurality of air holes symmetrically distributed along the middle part.

[0017] By adopting the technical scheme, the multiple symmetrically distributed air holes at different positions are used to detect the blank with different sizes, the detection cavity changes when the distance between the two clamp assemblies changes, the air holes at different positions are exposed in the detection cavity, the size of the air cavity also changes and communicates with the different air holes, and the shape of the air hole can be arc-shaped to match the outer contour of the blank.

[0018] The further arrangement of the present application is that the end of the buffer part near the detection cavity is provided with a chamfer.

[0019] By adopting the technical scheme, the blank is placed in front of the push plate frame, and the push plate frame can push the blank into the detection cavity without obstruction during the pushing process.

[0020] The beneficial effects of the present application are:

[0021] 1. When the size of the blank is smaller than the standard value, the blank cannot completely block the air hole, the air hole leaks, and the air pressure sensor can be used for judgment; when the size of the blank is larger than the standard value, the blank can completely block the air hole, but the outer wall of the blank will extrude the buffer part into the buffer cavity, and the detection block is close to the proximity sensor, and the proximity sensor sends a signal, so that whether the size of the blank is qualified can be quickly detected;

[0022] 2. The distance between the two clamp assemblies, i.e. the size of the detection cavity, can be adjusted according to the size of the blank to be measured, and at the same time, the size of the air cavity and the width of the push plate frame also change;

[0023] 3. When the air cylinder returns, the movable part is driven to rotate by gear two, and when the movable part rotates, the end of the slide rod that is not hinged moves in the sliding groove, and when the movable part rotates to the maximum angle, the end of the slide rod presses on the air switch, so that the air source is only supplied to the air-tight cavity when the measured part is placed in the air-tight cavity, and the output waste of the air source is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0025] Figure 1 is a structural schematic view of embodiment 1.

[0026] Figure 2 is Figure 1 the enlarged view of A of

[0027] Figure 3 is Figure 1Enlarged view of B of Fig. 1.

[0028] Figure 4 Enlarged view of C of Fig. 1. Figure 1

[0029] Figure 5 Side structure schematic diagram of Example 1.

[0030] Figure 6 Enlarged view of a-a of Fig. 1. Figure 5

[0031] In the figure, 1 is an airtight box; 2 is a ventilation cavity; 3 is an air pipe; 4 is an air source; 5 is a clamp head; 51 is a fixed part; 52 is a movable part; 53 is a buffer part; 6 is an air hole; 7 is a transmission assembly; 71 is a rack; 72 is a gear one; 73 is a rotating shaft; 74 is a gear two; 75 is a gear three; 8 is a push plate frame; 81 is a fixed frame; 82 is a movable frame; 9 is an adjusting assembly; 91 is a threaded rod; 92 is a motor; 93 is a movable plate; 10 is a connecting frame; 11 is an air cylinder; 12 is a sliding chute; 13 is a sliding rod; 14 is a pressing block; 15 is a spring one; 16 is a detection block; 17 is a proximity sensor; 18 is a display; 19 is a support frame. DETAILED DESCRIPTION

[0032] The technical solutions of the present application will be described clearly and completely below in conjunction with specific examples. Obviously, the described examples are only some of the examples of the present application, not all the examples. Based on the examples of the present application, all other examples obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0033] Example 1, a blank size detection device, as shown in Figures 1-6 Fig. 1, comprising an airtight box 1, an air cavity 2 is arranged in the airtight box 1, the air cavity 2 is communicated with an air pipe 3, the air pipe 3 is communicated with an air source 4 at the end away from the airtight box 1, an air pressure sensor is fixedly connected in the airtight box 1, a clamp assembly is slidably connected on the airtight box 1, the clamp assembly is arranged to be symmetrical to each other, the clamp assembly comprises a clamp head 5, the clamp head 5 comprises a fixed part 51 and a movable part 52 hinged at both ends of the fixed part 51, a buffer part 53 is slidably connected at the end of the movable part 52 away from the fixed part 51, a detection cavity is arranged between the two clamp assemblies, an air hole 6 is arranged on the airtight box 1 in the detection cavity, a support frame 19 is fixedly connected on one side of the airtight box 1, a pushing assembly is installed on the support frame 19, the pushing assembly comprises a push plate frame 8 and an air cylinder 11 driving the push plate frame 8 to move to the detection cavity, a transmission assembly 7 is connected between the push plate frame 8 and the clamp head 5, and the clamp assembly is screw-connected with an adjusting assembly 9 at the bottom of the airtight box 1.

[0034] ​​Further, the transmission assembly 7 comprises a rack 71 fixedly connected to the both ends of the push plate frame 8 and extending to the chuck 5, the rack 71 is engaged with a gear one 72, the middle of the gear one 72 is fixedly connected with a rotating shaft 73, the rotating shaft 73 is fixedly connected with a gear two 74, the edge of the gear two 74 is provided with a part of teeth and a part of no teeth, the gear two 74 is engaged with a gear three 75, the gear three 75 is fixedly connected to the top of the movable part 52.

[0035] Further, the two clamp assemblies further each comprise a connecting frame 10 fixedly connected with the fixed part 51, the adjusting assembly 9 comprises a threaded rod 91 threadedly connected with the connecting frame 10 and a motor 92 driving the threaded rod 91 to rotate, the connection positions of the threaded rod 91 with the connecting frames 10 in the two clamp assemblies are respectively provided with threads with opposite rotation directions, the connecting frame 10 extends into the airtight box 1 at an end away from the fixed part 51 and is fixedly connected with a movable plate 93 located in the airtight box 1 and slidingly connected with the airtight box 1, the two movable plates 93 and the two inner walls of the airtight box 1 on the two sides enclose the air passage 2, the push plate frame 8 comprises a fixed frame 81 in the middle and movable frames 82 slidingly connected to the both ends of the fixed frame 81, and the rack 71 is fixedly connected to the movable frames 82 and slidingly connected with the connecting frames 10.

[0036] Further, the movable part 52 is provided with a sliding groove 12 opening to the fixed part 51, the sliding groove 12 is hingedly connected with a sliding rod 13, an end of the sliding rod 13 is hingedly connected with a pressing block 14, the pressing block 14 is fixedly connected with a spring one 15 between the pressing block 14 and the sliding groove 12, and the sliding groove 12 is provided with an air switch located in the sliding direction of the pressing block 14.

[0037] Further, the movable part 52 is provided with a buffer cavity for the buffer part 53 to slide into, the buffer part 53 is fixedly connected with a spring two between the buffer cavity, the buffer part 53 is fixedly connected with a detection block 16, and the movable part is fixedly connected with a proximity sensor 17 sensing the detection block 16.

[0038] Further, the proximity sensor 17 and the air pressure sensor are connected with a display 18.

[0039] Further, the air holes 6 are provided as a plurality of holes symmetrically distributed along the middle part.

[0040] Further, an end of the buffer part 53 close to the detection cavity is provided with a chamfer.

[0041] Working principle: the measured piece is placed in front of the push plate frame 8, the cylinder 11 drives the push plate frame 8 to move forward, when the push plate frame 8 moves forward, the rack 71 drives the gear one 72 to rotate, at the same time, the gear one 72 drives the rotating shaft 73 to rotate, the rotating shaft 73 is connected to the fixed part 51, the rotating shaft 73 drives the gear two 74 to rotate, when the gear two 74 rotates, the toothed part drives the gear three 75 to rotate, the gear three 75 drives the movable part 52 to rotate away from the detection cavity, and then the gear two 74 rotates to the toothless part, the gear three 75 no longer rotates, at the same time, the push plate frame 8 pushes the measured piece into the detection cavity, then the cylinder 11 drives the push plate frame 8 to return, when the cylinder 11 returns, the gear two 74 rotates in the opposite direction, when the toothed part of the gear two 74 meshes with the gear three 75, the movable part 52 rotates towards the detection cavity to push the blank, the left and right clamps 5 rotate towards the detection cavity to push the blank to the middle part, then the blank is fixed, at this time, the movable part 52 rotates to the maximum angle, the pressing block 14 is pressed on the air switch, the air switch controls the air source 4 to supply air to the air-tight cavity;

[0042] The value change of the air pressure sensor is used to judge whether the blank detection piece meets the standard, the air hole 6 is located at the bottom of the blank to be measured, when the measured piece can completely cover the air hole 6 in the detection cavity, the air chamber 2 is a sealed space, the air pressure in the air chamber 2 increases and stops supplying air, and the air pressure value remains unchanged; when the size of the measured piece is smaller than the standard size range, the blank to be measured cannot completely cover the air hole 6, the air chamber 2 is in an open state, the air hole 6 leaks air, when the air source 4 supplies air to the air chamber 2, the air pressure in the air chamber 2 is basically unchanged and equivalent to atmospheric pressure, or the air pressure gradually decreases to be equivalent to atmospheric pressure after the air supply stops, the air pressure value in the air chamber 2 does not change; when the size of the blank is greater than the standard value, the blank can completely block the air hole 6, but at this time, the angle of the movable part 52 does not change after rotation, when the size of the blank is large, the outer wall of the blank will extrude the buffer part 53 into the buffer cavity, the detection block 16 fixedly connected with the buffer part 53 moves, when the error range is exceeded, the detection block 16 approaches the proximity sensor 17, the proximity sensor 17 sends a signal indicating that the size of the blank is too large.

Claims

1. A blank part size detection device, comprising an airtight box (1), characterized in that: The airtight box (1) is provided with a ventilation chamber (2), which is connected to an air pipe (3). The end of the air pipe (3) away from the airtight box (1) is connected to an air source (4). A pressure sensor is fixedly connected inside the airtight box (1). A clamp assembly is slidably connected to the airtight box (1). The clamp assembly consists of two symmetrical clamps. The clamp assembly includes a clamp (5). The clamp (5) includes a fixed part (51) and a movable part (52) hinged at both ends of the fixed part (51). A buffer part (53) is slidably connected to the movable part (52) away from the fixed part (51). A detection chamber is provided between the two clamp assemblies. An air hole (6) is provided on the airtight box (1) located in the detection chamber. A support frame (19) is fixedly connected to one side of the airtight box (1). A pusher assembly is installed on the support frame (19). The pusher assembly includes a push plate frame ( 8) and a cylinder (11) that drives the push plate frame (8) to move toward the detection chamber. A transmission assembly (7) is connected between the push plate frame (8) and the chuck (5). An adjustment assembly (9) is threadedly connected to the bottom of the airtight box (1). A buffer cavity is provided in the movable part (52) for the buffer part (53) to slide into. A spring is fixedly connected between the buffer part (53) and the buffer cavity. A detection block (16) is fixedly connected to the buffer part (53). A proximity sensor (17) that senses the detection block (16) is fixedly connected to the movable part (52). The air holes (6) are arranged in multiple symmetrically distributed along the middle. The multiple symmetrically distributed air holes (6) at different positions are used to detect blanks of different sizes. The shape of the air holes (6) is set to be an arc shape that fits the outer contour of the blank. The air holes (6) are located at the bottom of the blank to be tested.

2. The blank part size detection device according to claim 1, characterized in that: The transmission assembly (7) includes a rack (71) that is fixedly connected to both ends of the push plate frame (8) and extends toward the chuck (5). The rack (71) meshes with a gear one (72). A rotating shaft (73) is fixedly connected to the middle of the gear one (72). A gear two (74) is fixedly connected to the rotating shaft (73). The edge of the gear two (74) is partially toothed and partially toothless. The gear two (74) meshes with a gear three (75). The gear three (75) is fixedly connected to the top of the movable part (52).

3. The blank part size detection device according to claim 2, characterized in that: Each of the two clamping assemblies further includes a connecting frame (10) fixedly connected to the fixing part (51). The adjusting assembly (9) includes a threaded rod (91) threadedly connected to the connecting frame (10) and a motor (92) for driving the threaded rod (91) to rotate. The connection points on the threaded rod (91) with the connecting frames (10) in the two clamping assemblies are respectively provided with threads of opposite directions. The end of the connecting frame (10) away from the fixing part (51) extends into the airtight container. Inside the box (1), there is a movable plate (93) that is located inside the airtight box (1) and slidably connected to the airtight box (1). The movable plates (93) on both sides and the inner walls on both sides of the airtight box (1) enclose the ventilation cavity (2). The push plate frame (8) includes a fixed frame (81) in the middle and movable frames (82) that are slidably connected to both ends of the fixed frame (81). The rack (71) is fixedly connected to the movable frame (82) and slidably connected to the connecting frame (10).

4. The blank part size detection device according to claim 1, characterized in that: The movable part (52) is provided with a slide groove (12) leading to the fixed part (51). A slide rod (13) is hinged in the slide groove (12). A push block (14) is hinged at the end of the slide rod (13). A spring (15) is fixedly connected between the push block (14) and the slide groove (12). A vent switch located in the sliding forward direction of the push block (14) is installed in the slide groove (12).

5. The blank part size detection device according to claim 1, characterized in that: The proximity sensor (17) and the pressure sensor are connected to a display (18).

6. The blank part size detection device according to claim 1, characterized in that: The buffer section (53) has a chamfer on the side near the detection cavity.

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