Automatic detection device for threaded holes

Abstract

The application discloses a threaded hole automatic detection device which is used for detecting the to-be-detected tooth hole on a product and comprises a base plate, a fixed plate arranged on the upper surface of the base plate and a carrier plate installed on the upper surface center of the fixed plate, wherein the edges of at least two sides and at least one corner of the product are provided with at least one downward extending bending part, each of the bending parts is provided with the to-be-detected tooth hole, the outer side of each of the to-be-detected tooth holes is correspondingly provided with a support seat, a conductive probe is slidably installed in the support seat, a conductive sheet is arranged between each of the limiting seats and the support seat, and the end of the conductive probe embedded in the blind hole has a flange part which is radially outward. The application can realize the automatic detection of multiple tooth holes in different directions of the product at the same time, can avoid the damage of the conductive probe to the product during the test, can guarantee the detection precision, can greatly improve the detection efficiency and convenience and can reduce the cost.

Description

TECHNICAL FIELD

[0001] The present application relates to a threaded hole automatic detection device, belonging to the threaded hole detection technical field. BACKGROUND

[0002] Tapping refers to the inner wall of the hole is threaded, can be processed into a hole with threads, the hole is called tooth hole, after the product is completed, the tooth hole needs to be detected by using corresponding detection tools to screen out unqualified products.

[0003] The existing tooth hole detection method mostly relies on manual operation of tooth gauge to detect tooth hole, manual operation usually can only detect one tooth hole at a time, when facing products with multiple tooth holes in multiple directions, a lot of manpower and time are needed to detect multiple tooth holes in turn, the detection efficiency is low, and manual detection will cause damage to the product if not careful. SUMMARY

[0004] The purpose of the present application is to provide a threaded hole automatic detection device, which can realize automatic detection of multiple tooth holes in different directions of the product at the same time, and can avoid damage to the product by the conductive test needle during the test process, greatly improve the detection efficiency and convenience while ensuring the detection accuracy, and reduce the cost.

[0005] To achieve the above purpose, the technical scheme adopted by the present application is: a threaded hole automatic detection device for detecting a to-be-detected tooth hole on a product, comprising: a base plate, a fixed plate arranged on the upper surface of the base plate, and a carrier plate mounted on the central upper surface of the fixed plate, at least one downward extending bending part is arranged at the edge of at least two side edges and at least one corner of the product, at least one to-be-detected tooth hole is arranged on each bending part, the lower surface of the main body of the product is in contact with the upper surface of the carrier plate, at least one corner of the carrier plate is arranged as a plane that can be attached to the corresponding bending part, and each bending part is located outside the side surface of the carrier plate.

[0006] Each of the to-be-tested tooth hole is correspondingly provided with a support seat, a conductive probe is slidably installed in the support seat, one end of the horizontally arranged conductive probe extends outward from the surface of the support seat on the side of the to-be-tested tooth hole, a limiting seat is installed on the surface of the support seat away from the to-be-tested tooth hole, a horizontally extending blind hole is formed in the surface of the limiting seat facing the support seat, the other end of the conductive probe extends into the blind hole, a spring horizontally arranged in the blind hole is in extrusion contact with the end face of the end of the conductive probe embedded in the blind hole, the support seat is connected with a push block below the support seat, and the support seats on the same side of the fixed plate are connected with the same push block, each push block is connected with a cylinder arranged outside the side surface of the fixed plate and can move close to or away from the product along the piston rod of the cylinder;

[0007] A conductive sheet is arranged between each of the limiting seat and the support seat, the conductive sheet is provided with an avoidance through hole for the conductive probe to pass through and arranged in a gap with the outer surface of the conductive probe, the end of the conductive probe embedded in the blind hole has a flange portion outward in the radial direction, the outer diameter of the flange portion is greater than the inner diameter of the avoidance through hole, so that the flange portion on the conductive probe can be in surface contact with the conductive sheet, the flange portion of the conductive probe and the conductive sheet are respectively electrically connected with an indicating lamp installed on the upper surface of the base plate through wires, and the side surface of the carrier plate is correspondingly provided with a plurality of avoidance grooves for the end of the conductive probe to be embedded, and the bending part of the product can be in surface contact with the side surfaces of the carrier plates on both sides of the avoidance grooves.

[0008] The further improved scheme in the above technical solution is as follows:

[0009] 1. In the above scheme, an installation hole is formed in the edge of the fixed plate close to the cylinder, the push block is movably arranged in the corresponding installation hole, two opposite side surfaces of each push block are respectively in sliding contact with the inner wall of the installation hole, and one of the other two opposite side surfaces is arranged in a spaced manner with the inner wall of the installation hole.

[0010] 2. In the above scheme, a plurality of arc-shaped grooves are formed in the two side surfaces of the push block facing and away from the cylinder, a cylindrical elastic block is embedded and installed in each of the plurality of arc-shaped grooves arranged in a spaced manner along the length direction of the push block, and the other side surface of the cylindrical elastic block embedded in the arc-shaped groove protrudes from the side surface of the push block.

[0011] 3. In the above scheme, the cylindrical elastic block is a rubber block or a silica gel block.

[0012] 4. In the above scheme, a guide block is installed on the upper surface of the fixed plate and on both sides of the push block.

[0013] 5. The mounting through hole is arranged on the support seat, and the inner wall of the mounting through hole is in clearance fit with the outer surface of the conductive probe.

[0014] 6. The positioning pins are arranged on the upper surface of the carrier plate, and the product is provided with the positioning holes in which the positioning pins are embedded.

[0015] 7. The indicator lamps are arranged close to the corresponding conductive probes.

[0016] 8. The limiting columns are arranged on the upper surface of the fixing plate and outside the carrier plate, and each of the limiting columns is arranged close to the carrier plate.

[0017] 9. The support seat and the push block are connected through at least two groups of pin and pin hole.

[0018] Compared with the prior art, the technical scheme has the following advantages:

[0019] 1. The automatic detection device for threaded holes of the application, each of the outer sides of the to-be-detected holes is correspondingly provided with a support seat, a conductive probe is slidably installed in the support seat, one end of the horizontally arranged conductive probe extends outward from the surface of the side of the support seat opposite to the to-be-detected hole, a limiting seat is installed on the surface of the side of the support seat opposite to the to-be-detected hole, a horizontally extending blind hole is formed in the surface of the support seat, the other end of the conductive probe extends into the blind hole, a spring horizontally arranged in the blind hole is in extrusion contact with the end face of the end of the conductive probe embedded in the blind hole, the support seat is connected with the push block below and the support seats on the same side of the fixed plate are all connected with the same push block, each push block is connected with the cylinder arranged outside the side surface of the fixed plate and can approach or move away from the product with the piston rod of the cylinder, a conductive sheet is arranged between each limiting seat and the support seat, the conductive sheet is provided with an avoidance through hole through which the conductive probe passes and which is gap arranged with the outer surface of the conductive probe, the end of the conductive probe embedded in the blind hole has a flange part outward in the radial direction, the outer diameter of the flange part is larger than the inner diameter of the avoidance through hole, so that the flange part on the conductive probe can be in surface contact with the conductive sheet, the flange part of the conductive probe and the conductive sheet are respectively electrically connected with an indicating lamp installed on the upper surface of the base plate through wires, the contraction of at least one push block driven by each cylinder realizes the forward and backward movement of the plurality of conductive probes, and then the on-off between the conductive probe and the corresponding conductive sheet and the lighting and extinguishing of the corresponding indicating lamp are realized, so as to complete the automatic detection of the plurality of holes in different directions of the product at the same time, which greatly improves the detection efficiency and convenience while ensuring the detection accuracy and reduces the cost; further, at least one downward extending bending part is arranged at the edge of at least two side edges and at least one corner of the product, at least one to-be-detected hole is arranged on each bending part, the lower surface of the main part of the product is in contact with the upper surface of the carrier plate, at least one corner of the carrier plate is arranged as a plane which can be attached to the corresponding bending part, each bending part is located outside the side surface of the carrier plate, a plurality of avoidance grooves for embedding one end of the conductive probe are correspondingly formed in the side surface of the carrier plate, the bending part of the product is in surface contact with the side surface of the carrier plate on both sides of the avoidance groove, which can provide reverse support for the relatively weak bending part of the product when the conductive probe contacts the product, avoiding damage to the product during the testing process.

[0020] 2, The threaded hole automatic detection device of the present application, an installation hole is formed in the edge of the fixed plate near the side of the cylinder, the push block is movably arranged in the corresponding installation hole, the two opposite side surfaces of each push block are in sliding contact with the inner wall of the installation hole, one of the other two opposite side surfaces is arranged in interval with the inner wall of the installation hole, the position accuracy of the push block during long time reciprocating movement is further improved, and the position accuracy and test accuracy of the conductive probe and the consistency and stability of the test result are further ensured; Further, a plurality of arc grooves are formed on the two side surfaces of the push block facing and away from the cylinder, a cylindrical elastic block is embedded in each of the plurality of arc grooves arranged in interval along the length direction of the push block, the other side surface of the cylindrical elastic block embedded in one side of the arc groove protrudes from the side surface of the push block, buffer is provided before the reciprocating movement of the push block reaches the end point, so that the conductive probe is prevented from shaking due to excessive instantaneous force, especially the buffer of the force can be provided before the conductive probe is about to contact the product rigidly, so that the damage to the product caused by the excessive instantaneous force of the conductive probe is avoided, and the adverse harm to the product caused by the test is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0021] ATTACHMENT Figure 1 It is the overall structure schematic diagram of the threaded hole automatic detection device of the present application;

[0022] ATTACHMENT Figure 2 It is the overall structure schematic diagram of the threaded hole automatic detection device of the present application; Figure 1 It is the enlarged schematic diagram of A in the figure;

[0023] ATTACHMENT Figure 3 It is the overall structure schematic diagram of the threaded hole automatic detection device of the present application; Figure 1 It is the sectional view schematic diagram along B-B in the figure;

[0024] ATTACHMENT Figure 4 It is the overall structure schematic diagram of the threaded hole automatic detection device of the present application; Figure 3 It is the enlarged schematic diagram of C in the figure;

[0025] ATTACHMENT Figure 5 It is the overall structure schematic diagram of the threaded hole automatic detection device of the present application; Figure 4 It is the enlarged schematic diagram of D in the figure;

[0026] ATTACHMENT Figure 6 It is the overall structure schematic diagram of the threaded hole automatic detection device of the present application; Figure 4 It is the enlarged schematic diagram of E in the figure;

[0027] ATTACHMENT Figure 7 It is the overall structure schematic diagram of the threaded hole automatic detection device of the present application;

[0028] In the above drawings: 100, product; 101, to-be-detected hole; 102, bending part; 1, base plate; 2, fixing plate; 201, mounting hole; 3, air cylinder; 4, push block; 5, support seat; 61, pin; 62, pin hole; 7, conductive probe; 8, flange part; 9, limiting seat; 10, blind hole; 11, spring; 12, conductive sheet; 121, clearance hole; 13, lead wire; 14, indicator light; 15, mounting groove; 16, arc-shaped groove; 17, cylindrical elastic block; 18, guide block; 19, mounting through hole; 20, carrier plate; 21, positioning pin; 22, positioning hole; 23, limiting column; 24, clearance groove. Embodiment

[0029] The patent can be further clearly understood through the specific examples given below, but they are not a limitation of the patent.

[0030] Embodiment 1: A threaded hole automatic detection device for detecting to-be-detected holes 101 on a product 100, comprising: a base plate 1, a fixing plate 2 arranged on the upper surface of the base plate 1, and a carrier plate 20 mounted on the upper surface of the fixing plate 2, wherein the product 100 is provided with at least one downwardly extending bending part 102 at the edge of at least two sides and at least one corner, each of the bending parts 102 is provided with a to-be-detected hole 101, the lower surface of the main body of the product 100 is in contact with the upper surface of the carrier plate 20, at least one corner of the carrier plate 20 is arranged as a plane that can be attached to the corresponding bending part 102, and each of the bending parts 102 is located outside the lateral surface of the carrier plate 20;

[0031] Each of the to-be-detected holes 101 is correspondingly provided with a support seat 5, a conductive probe 7 is slidably mounted in the support seat 5, one end of the horizontally arranged conductive probe 7 extends outward from the surface of the support seat 5 on the side of the to-be-detected hole 101, a limiting seat 9 is mounted on the surface of the support seat 5 opposite to the to-be-detected hole 101, a horizontally extending blind hole 10 is formed in the surface of the limiting seat 9 facing the support seat 5, the other end of the conductive probe 7 extends into the blind hole 10 from the support seat 5, a spring 11 horizontally arranged in the blind hole 10 is in extrusion contact with the end face of the end of the conductive probe 7 embedded in the blind hole 10, the support seat 5 is connected with a push block 4 below and the support seats 5 on the same side of the fixing plate 2 are connected with the same push block 4, each of the push blocks 4 is connected with an air cylinder 3 arranged outside the lateral surface of the fixing plate 2 and can approach or move away from the product 100 with the piston rod of the air cylinder 3;

[0032] Each of the limiting seat 9 and the support seat 5 is provided with a conductive sheet 12, the conductive sheet 12 is provided with a position avoiding through hole 121 for the conductive probe 7 to pass through and gap setting with the outer surface of the conductive probe 7, the end of the conductive probe 7 embedded in the blind hole 10 has a flange part 8 outward in the radial direction, the outer diameter of the flange part 8 is larger than the inner diameter of the position avoiding through hole 121, so that the flange part 8 on the conductive probe 7 can be in surface contact with the conductive sheet 12, the flange part 8 of the conductive probe 7 and the conductive sheet 12 are respectively electrically connected with an indicating lamp 14 installed on the upper surface of the base plate 1 through a wire 13, the side surface of the carrier plate 20 is correspondingly provided with a plurality of position avoiding grooves 24 for the one end of the conductive probe 7 to be embedded, the bending part 102 of the product 100 can be in surface contact with the side surface of the carrier plate 20 on both sides of the position avoiding groove 24;

[0033] In the initial state, the piston rod of the cylinder is in the retracted state, each conductive probe is away from the corresponding tooth hole to be measured, under the action of the spring in the blind hole, the flange part on each conductive probe is in surface contact with the corresponding conductive sheet, so that the electric circuit composed of the conductive probe, the conductive sheet and the indicating lamp is conducted, and the corresponding indicating lamp is lit, at this time, each conductive probe extends outward to the farthest place on the surface of the side of the tooth hole to be measured from the support seat;

[0034] By retracting the cylinder and cooperating with the recognition indicating lamp whether it is turned from the lit state to the extinguished state, the automatic detection of the plurality of tooth holes in different directions of the product can be realized at the same time, the detection efficiency and convenience are greatly improved while ensuring the detection accuracy, and the cost is reduced.

[0035] The edge of the fixed plate 2 near the side of the cylinder 3 is provided with a mounting hole 201, the push block 4 is movably arranged in the corresponding mounting hole 201, and the two opposite side surfaces of each push block 4 are respectively in sliding contact with the inner wall of the mounting hole 201, and one of the other two opposite side surfaces is spaced apart from the inner wall of the mounting hole 201.

[0036] The two side surfaces of the push block 4 facing and away from the cylinder 3 are provided with a plurality of arc grooves 16, and a cylindrical elastic block 17 is embedded and installed in each of the plurality of arc grooves 16 arranged at intervals along the length direction of the push block 4, and the other side surface of the cylindrical elastic block 17 embedded in the arc groove 16 protrudes from the side surface of the push block 4;

[0037] In the initial state, the piston rod of the cylinder is in the retracted state, at this time, the cylindrical elastic block on the push block is attached to the inner wall of the mounting hole near the cylinder;

[0038] Before the conductive probe is about to contact the qualified product, the cylindrical elastic block installed on the push block contacts the inner wall of the installation hole away from the side of the cylinder, and buffers the force generated by the cylinder, and then the conductive probe continues to move a small stroke to the product with the to-be-tested hole.

[0039] The cylindrical elastic block 17 is a rubber block.

[0040] The upper surface of the fixed plate 2 and located on both sides of the push block 4 is provided with a guide block 18, which ensures the position accuracy of the support seat driving the test probe to move reciprocally during long-term use, ensures the test accuracy, and improves the consistency and stability of the test results.

[0041] The support seat 5 is provided with an installation through hole 19 for the conductive probe 7 to pass through, and the inner wall of the installation through hole 19 is in clearance fit with the outer surface of the conductive probe 7, which provides a space for the self-adaptive adjustment of the conductive probe, ensures the coaxiality between the conductive probe and the to-be-tested hole during each embedding into the to-be-tested hole, improves the test accuracy and avoids the damage of the conductive probe to the to-be-tested hole.

[0042] The upper surface of the carrier plate 20 is provided with a plurality of positioning pins 21, and the product 100 is provided with positioning holes 22 for the positioning pins 21 to embed.

[0043] The plurality of indicator lights 14 are each arranged close to the corresponding conductive probe 7.

[0044] The upper surface of the fixed plate 2 and located outside the carrier plate 20 is provided with a plurality of limiting columns 23, and each of the limiting columns 23 is arranged close to the carrier plate 20.

[0045] The support seat 5 and the push block 4 are connected by at least two groups of pin 61 and pin hole 62.

[0046] Embodiment 2: A threaded hole automatic detection device for detecting a to-be-tested hole 101 on a product 100, comprising: a base plate 1, a fixed plate 2 arranged on the upper surface of the base plate 1, and a carrier plate 20 arranged on the upper surface of the fixed plate 2, wherein the product 100 is provided with at least one downwardly extending bending part 102 at the edge of at least two sides and at least one corner, each of the bending parts 102 is provided with at least one to-be-tested hole 101, the lower surface of the main body part of the product 100 is in contact with the upper surface of the carrier plate 20, at least one corner of the carrier plate 20 is arranged as a plane that can be fitted with the corresponding bending part 102, and each of the bending parts 102 is located outside the side surface of the carrier plate 20.

[0047] Each of the to-be-tested tooth hole 101 is correspondingly provided with a support seat 5, the support seat 5 is slidably installed with a conductive probe 7, the horizontally arranged conductive probe 7 is outwardly extended from the support seat 5 to the surface of the side of the to-be-tested tooth hole 101, the surface of the side of the support seat 5 away from the to-be-tested tooth hole 101 is installed with a limiting seat 9, the limiting seat 9 is opened with a horizontally extending blind hole 10 on the surface of the support seat 5, the other end of the conductive probe 7 is extended into the blind hole 10 and the blind hole 10, a spring 11 horizontally arranged in the blind hole 10 is in extrusion contact with the end face of the end of the conductive probe 7 embedded in the blind hole 10, the support seat 5 is connected with the push block 4 below and the same side of the fixed plate 2, and the support seat 5 is connected with the same push block 4, each of the push block 4 is connected with the air cylinder 3 arranged outside the side surface of the fixed plate 2 and can be close to or away from the product 100 with the piston rod of the air cylinder 3;

[0048] Each of the limiting seat 9 and the support seat 5 is provided with a conductive sheet 12, the conductive sheet 12 is opened with a clearance hole 121 for the conductive probe 7 to pass through and gap setting with the outer surface of the conductive probe 7, the end of the conductive probe 7 embedded in the blind hole 10 has a flange part 8 outward in the radial direction, the outer diameter of the flange part 8 is greater than the inner diameter of the clearance hole 121, so that the flange part 8 on the conductive probe 7 can be in surface contact with the conductive sheet 12, the flange part 8 of the conductive probe 7 and the conductive sheet 12 are respectively electrically connected with an indicating lamp 14 installed on the upper surface of the base plate 1 through a wire 13, and the side surface of the carrier plate 20 is correspondingly opened with a plurality of clearance grooves 24 for the end of the conductive probe 7 to be embedded, and the bending part 102 of the product 100 can be in surface contact with the side surface of the carrier plate 20 on both sides of the clearance groove 24;

[0049] The piston rod of the air cylinder is in the elongated state and pushes the push block to move towards the product with the to-be-tested tooth hole, at the same time, the support seat and each conductive probe installed in the support seat move towards the corresponding to-be-tested tooth hole;

[0050] If the conductive probe can pass through the to-be-tested tooth hole, the corresponding indicating lamp remains on, indicating that the to-be-tested tooth hole is unqualified;

[0051] If the conductive probe cannot pass through the to-be-tested tooth hole, the conductive probe is subjected to a reaction force from the product with the to-be-tested tooth hole, so that the conductive probe moves towards the spring, extrudes the spring and makes a gap between the flange part thereon and the conductive sheet, so that the electric circuit composed of the conductive probe, the conductive sheet and the indicating lamp is disconnected, the corresponding indicating lamp is turned off, indicating that the to-be-tested tooth hole is qualified, by using the principle of safe weak current series closed loop circuit, under the premise of lower cost, the multi-hole synchronous rapid detection is realized, the manpower is saved and the efficiency is improved.

[0052] The fixing plate 2 is provided with an installation hole 201 at the edge close to the cylinder 3, and the push block 4 is movably arranged in the corresponding installation hole 201.

[0053] The upper surface of the loading plate 20 is provided with a plurality of positioning pins 21, and the product 100 is provided with positioning holes 22 for the positioning pins 21.

[0054] The upper surface of the fixing plate 2 is provided with a plurality of limiting columns 23, and each limiting column 23 is arranged close to the loading plate 20.

[0055] The support base 5 and the push block 4 are provided with pin holes 62 which are vertically connected to each other, and the two ends of the pin 61 are respectively embedded in the pin holes 62 of the support base 5 and the push block 4.

[0056] The blind hole 10 is coaxially arranged with the conductive probe 7, and in use, the product with a plurality of to-be-tested holes is first arranged on the loading plate, and the positioning pins on the loading plate are embedded in the positioning holes on the product to realize the positioning of the product, so that each to-be-tested hole is coaxially arranged with the corresponding conductive probe.

[0057] The limiting seat 9 is fixedly arranged on the support base 5 by at least two bolts.

[0058] The surface of the support base 5 facing the limiting seat 9 is provided with an installation groove 15 for embedding the conductive sheet 12.

[0059] The surface of the conductive probe 7 away from the spring 11 is a conical surface.

[0060] The support base 5 and the limiting seat 9 are insulating seats, and PEK material can be selected.

[0061] The conductive sheet 12 is a copper sheet.

[0062] The working principle of the present application is as follows:

[0063] In use, the product with a plurality of to-be-tested holes is first arranged on the loading plate, and the positioning pins on the loading plate are embedded in the positioning holes on the product to realize the positioning of the product, so that each to-be-tested hole is coaxially arranged with the corresponding conductive probe.

[0064] In the initial state, the piston rod of the cylinder is in the retracted state, at this time, the cylindrical elastic block on the push block is in close contact with the inner wall of the mounting hole close to the cylinder side, each conductive probe is away from the corresponding tooth hole to be measured, under the action of the spring in the blind hole, the flange part on each conductive probe is in contact with the corresponding conductive sheet, so that the electric circuit composed of the conductive probe, the conductive sheet and the indicator lamp is conducted, and the corresponding indicator lamp is lit, at this time, each conductive probe extends outward to the farthest position on the surface of the support seat towards the side of the tooth hole to be measured;

[0065] The piston rod of the cylinder is placed in the extended state and the push block is pushed to move towards the product with the tooth hole to be measured, at the same time, the support seat and each conductive probe installed in the support seat move towards the corresponding tooth hole to be measured;

[0066] Before the conductive probe contacts the qualified product, the cylindrical elastic block installed on the push block is in contact with the inner wall of the mounting hole away from the cylinder side, and buffers the force generated by the cylinder, and then the conductive probe continues to move towards the product with the tooth hole to be measured for a small stroke;

[0067] If the conductive probe can pass through the tooth hole to be measured, the corresponding indicator lamp remains lit, indicating that the tooth hole to be measured is unqualified;

[0068] If the conductive probe cannot pass through the tooth hole to be measured, the conductive probe is subjected to a reaction force from the product with the tooth hole to be measured, so that the conductive probe moves towards the spring, extrudes the spring and makes the gap between the flange part thereon and the conductive sheet, so that the electric circuit composed of the conductive probe, the conductive sheet and the indicator lamp is disconnected, and the corresponding indicator lamp is extinguished, indicating that the tooth hole to be measured is qualified;

[0069] Therefore, only the retraction of the cylinder and the cooperation of the identification indicator lamp to change from the lit state to the extinguished state can realize the simultaneous automatic detection of multiple tooth holes in different directions of the product, which greatly improves the detection efficiency and convenience while ensuring the detection accuracy and reduces the cost.

[0070] When the automatic thread hole detection device is used, the front and back movement of the plurality of conductive probes is realized by the plurality of cylinders, each cylinder drives the contraction of at least one push block, and then the on and off of the conductive probes and the corresponding conductive sheets and the lighting and extinguishing of the corresponding indicator lamps are realized, so as to complete the automatic detection of the plurality of tooth holes in different directions of the product at the same time, which greatly improves the detection efficiency and convenience while ensuring the detection accuracy, reduces the cost, and can provide reverse support for the relatively weak bending part of the product when the conductive probe contacts the product, avoiding damage to the product during the test process. In addition, it further improves the position accuracy of the push block during long-time reciprocating movement, thereby ensuring the position accuracy of the conductive probe, the test accuracy, and the consistency and stability of the test results, and providing a buffer before the reciprocating movement of the push block reaches the end point, avoiding the shaking of the conductive probe due to excessive instantaneous force, especially providing a power buffer before the conductive probe is about to contact the product hard, avoiding damage to the product caused by the excessive instantaneous force of the conductive probe, and avoiding the adverse effects of the test on the product.

[0071] The above embodiments are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and to implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made in accordance with the spirit and essence of the present application shall be covered within the protection scope of the present application.

Claims

1. An automatic thread hole detection apparatus for detecting a thread hole (101) to be detected on a product (100), comprising: The utility model relates to a kind of products (100) and its testing device, product (100) is placed on the substrate (1), fixed plate (2) is set on the upper surface of substrate (1) and carrier plate (20) is installed on the upper surface center of fixed plate (2), characterized by: at least one downwardly extending bending part (102) is arranged at the edge of at least two sides and at least one corner of the product (100), a to-be-tested tooth hole (101) is arranged on each of the bending part (102), the lower surface of the main body of the product (100) is in contact with the upper surface of the carrier plate (20), at least one corner of the carrier plate (20) is arranged as a plane that can be attached to the corresponding bending part (102), and each of the bending part (102) is located outside the side surface of the carrier plate (20) respectively. Each of the to-be-tested tooth hole (101) is correspondingly provided with a support seat (5), and a conductive test needle (7) is slidably installed in the support seat (5). One end of the horizontally arranged conductive test needle (7) extends outward from the surface of the support seat (5) on the side of the to-be-tested tooth hole (101). A limiting seat (9) is installed on the surface of the support seat (5) away from the to-be-tested tooth hole (101). A horizontally extending blind hole (10) is formed in the surface of the limiting seat (9) facing the support seat (5). The other end of the conductive test needle (7) extends into the blind hole (10) from the support seat (5). A spring (11) horizontally arranged in the blind hole (10) is in pressing contact with the end face of the end of the conductive test needle (7) embedded in the blind hole (10). The support seat (5) is connected with a push block (4) below and a plurality of support seats (5) on the same side of the fixed plate (2) are connected with the same push block (4). Each of the push blocks (4) is connected with a gas cylinder (3) arranged outside the side surface of the fixed plate (2) and can approach or move away from the product (100) with the piston rod of the gas cylinder (3). A conductive sheet (12) is arranged between each of the limiting seat (9) and the support seat (5). An avoidance through hole (121) is formed in the conductive sheet (12) for the conductive test needle (7) to pass through and be arranged in a gap with the outer surface of the conductive test needle (7). The end of the conductive test needle (7) embedded in the blind hole (10) has a flange portion (8) extending outward in the radial direction. The outer diameter of the flange portion (8) is greater than the inner diameter of the avoidance through hole (121), so that the flange portion (8) on the conductive test needle (7) can be in surface contact with the conductive sheet (12). The flange portion (8) of the conductive test needle (7) and the conductive sheet (12) are respectively electrically connected with an indicator light (14) installed on the upper surface of the substrate (1) through a wire (13). A plurality of avoidance grooves (24) for embedding one end of the conductive test needle (7) are correspondingly formed in the side surface of the carrier plate (20). The bending part (102) of the product (100) can be in surface contact with the side surface of the carrier plate (20) on both sides of the avoidance groove (24).

2. The threaded hole automatic detection device according to claim 1, characterized in that: The fixing plate (2) is provided with an installation hole (201) near the edge of the side close to the cylinder (3), and the push block (4) is movably arranged in the corresponding installation hole (201). Each push block (4) is in sliding contact with the inner wall of the installation hole (201) on two opposite side surfaces, and one of the other two opposite side surfaces is arranged in interval with the inner wall of the installation hole (201).

3. The threaded hole automatic detection apparatus according to claim 2, characterized in that: The push block (4) is provided with a plurality of arc-shaped grooves (16) on the two side surfaces facing and away from the cylinder (3). A plurality of cylindrical elastic blocks (17) are respectively embedded in the arc-shaped grooves (16) arranged in interval along the length direction of the push block (4). The other side surface of the cylindrical elastic block (17) embedded in the arc-shaped groove (16) on one side protrudes from the side surface of the push block (4).

4. The threaded hole automatic detection device according to claim 3, characterized in that: The cylindrical elastic block (17) is a rubber block or a silica gel block.

5. The threaded hole automatic detection apparatus according to claim 1, wherein: The upper surface of the fixing plate (2) is provided with a guide block (18) on both sides of the push block (4).

6. The threaded hole automatic detection apparatus according to claim 1, wherein: The support seat (5) is provided with an installation through hole (19) for the conductive probe (7) to pass through, and the inner wall of the installation through hole (19) is in clearance fit with the outer surface of the conductive probe (7).

7. The threaded hole automatic detection apparatus according to claim 1, wherein: The upper surface of the carrier plate (20) is provided with a plurality of positioning pins (21) arranged in interval, and the product (100) is provided with a positioning hole (22) for the positioning pin (21) to be embedded.

8. The threaded hole automatic detection apparatus according to claim 1, wherein: A plurality of the indicating lamps (14) are respectively arranged close to the corresponding conductive probes (7).

9. The threaded hole automatic detection apparatus according to claim 1, wherein: The upper surface of the fixing plate (2) is provided with a plurality of limiting columns (23) arranged outside the carrier plate (20), and each limiting column (23) is arranged close to the carrier plate (20).

10. The threaded hole automatic detection apparatus according to claim 1, wherein: The support seat (5) and the push block (4) are connected through at least two groups of pin (61) and pin hole (62) cooperation.

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