Detection device for detecting amount of powder placed at bottom of hole

Abstract

The utility model provides a detection device for detecting the amount of powder at the bottom of a hole, and belongs to the technical field of in-hole powder amount detection. In order to solve the problem that in-hole powder amount detection is difficult to consider accuracy and efficiency at the same time, the utility model provides a detection device which comprises a positioning assembly and a detection assembly. The positioning assembly comprises a first positioning piece and a second positioning piece movably arranged in the first positioning piece. The first positioning piece comprises a stretching part, the end face of the stretching part is arranged to be a positioning face, and the stretching part is used for stretching into the hole and enabling the positioning face to abut against the surface of the powder; a positioning needle is arranged at one end of the second positioning piece, the second positioning piece is provided with a reset piece, and the reset piece applies pushing force to the second positioning piece, so that the positioning needle of the second positioning piece penetrates through the positioning surface of the first positioning piece and extends out of the positioning surface by a first distance; the detection assembly is arranged on the positioning assembly and used for detecting the displacement of the second positioning piece relative to the first positioning piece. The hole bottom error is eliminated, and the detection accuracy and the detection efficiency are both considered.

Description

Technical Field

[0001] The present application relates to the technical field of detecting the amount of powder in a hole, and in particular to a detection device for detecting the amount of powder placed at the bottom of a hole. Background Art

[0002] In industrial applications, there is a situation where powder or tiny granular objects need to be injected into the holes of porous products that are injection molded or molded. For product quality control, it is necessary to efficiently detect whether the amount of injected powder reaches the set specification value. Insufficient or excessive powder will bring major quality risks to the product.

[0003] In order to achieve efficient detection, there are corresponding improvements in the prior art. For example, a Chinese patent application with a publication date of 2020-4-14 and a publication number of CN210321559U discloses a cartridge case gunpowder depth measurement device, which uses a plug gauge. When the plug gauge is fully inserted into the small hole in the medicine pressing plate, the module in the measuring mechanism drives the sensor to scan the height of the plug gauge below and transmits the data to the computer, so that the computer records the height of each plug gauge. If the height of a certain plug gauge is scanned beyond the tolerance range, the cartridge case production is unqualified, and the worker reloads the unqualified cartridge case, thereby realizing automated detection and greatly improving efficiency. The disadvantage of this solution is that due to errors in processing and placement, the shell bottoms of multiple cartridge cases are not located in the same plane during measurement, resulting in low measurement accuracy.

[0004] In order to solve this problem, the prior art usually adopts two measurements, that is, first measuring the hole depth and then measuring the powder surface to obtain the powder amount, but this method is time-consuming and labor-intensive and reduces the detection efficiency. Utility Model Content

[0005] The purpose of the present application is to solve the problem in the prior art that it is difficult to achieve both accuracy and efficiency in detecting the amount of powder in a hole. Therefore, the present application provides a detection device for detecting the amount of powder placed at the bottom of a hole, which respectively locates the powder surface and the bottom of the hole through a first positioning member and a second positioning member, thereby eliminating the hole bottom error and achieving both detection accuracy and detection efficiency.

[0006] The embodiment of the present application provides a detection device for detecting the amount of powder placed at the bottom of a hole, including a positioning component and a detection component;

[0007] The positioning assembly includes a first positioning member and a second positioning member movably disposed in the first positioning member;

[0008] The first positioning member comprises an extending portion, an end surface of the extending portion is configured as a positioning surface, and the extending portion is used to extend into the hole and make the positioning surface abut against the powder surface;

[0009] One end of the second positioning member is configured as a positioning needle, and the second positioning member is provided with a reset member, and the reset member applies a pushing force to the second positioning member, so that the positioning needle of the second positioning member penetrates the positioning surface of the first positioning member and extends out of the positioning surface by a first distance, and the first distance is greater than the thickness of the powder;

[0010] The detection component is arranged on the positioning component and is used for detecting the displacement of the second positioning member relative to the first positioning member.

[0011] By adopting the above technical scheme, the bottom of the hole is positioned by the positioning needle of the second positioning member passing through the powder and abutting the bottom of the hole, thereby eliminating the hole processing error or the placement error relative to the detection device and improving the detection accuracy; and the positioning of the bottom of the hole can be carried out synchronously with the positioning surface of the first positioning member positioning the surface of the powder in the hole, that is, one-time detection is achieved, which improves the detection accuracy while taking into account the detection efficiency.

[0012] In some embodiments, the detection component includes a sensing contact and a conductive component, the sensing contact is arranged on the side of one end of the first positioning member away from the extension portion, the conductive component is arranged on one end of the second positioning member away from the positioning needle, and the conductive component can be in contact with the sensing contact to indicate the displacement of the second positioning member relative to the first positioning member.

[0013] By adopting the above technical solution, the displacement of the second positioning member relative to the first positioning member is converted into an electrical signal through the cooperation of the sensing contact arranged on the first positioning member and the conductive component arranged on the second positioning member, thereby further improving the detection accuracy and detection efficiency.

[0014] In some embodiments, the conduction component includes a limiting cavity, the limiting cavity includes a cavity bottom and an opening that are relatively arranged, and the opening direction of the limiting cavity is perpendicular to the extension direction of the second positioning member;

[0015] The conduction component further includes an elastic member and a conductive ball. Two ends of the elastic member respectively abut against the bottom of the limiting cavity and the conductive ball, so that the conductive ball can be in contact with the sensing contact for conduction.

[0016] By adopting the above technical solution, the conductive ball is kept in contact with the inner wall of the first positioning member through the elastic member when the second positioning member moves relative to the first positioning member, that is, when the second positioning member is extended or retracted, thereby improving the contact stability between the conductive ball and the sensing contact, and at the same time, improving the extension and retraction stability of the second positioning member.

[0017] In some embodiments, the conductive component further includes a mounting shell and a plurality of auxiliary balls disposed in the mounting shell, the conductive ball is disposed in the mounting shell and in contact with the plurality of auxiliary balls, and the conductive ball abuts against the elastic member through the mounting shell.

[0018] By adopting the above technical solution, the conductive ball can roll in the mounting shell through the auxiliary ball, so that when the second positioning member is extended or retracted, the conductive ball can roll relative to the inner wall of the first positioning member, reducing the friction between the two and further improving the stability of the extension and retraction of the second positioning member.

[0019] In some embodiments, the conduction component includes a limiting channel, the limiting channel includes two openings arranged opposite to each other, and the extending direction of the limiting channel is perpendicular to the telescopic direction of the second positioning member;

[0020] The conducting component further comprises an elastic member and two conductive balls respectively abutting against two ends of the elastic member, so that the conductive balls can be in contact with the sensing contact point for conduction.

[0021] By adopting the above technical solution, an elastic member is arranged in the limiting channel, and conductive balls are symmetrically arranged at both ends of the elastic member, so that the two sides of the conductive component exert the same force on the first positioning member, thereby improving the stability of the conductive component during long-term use, and further improving the telescopic stability of the second positioning member.

[0022] In some embodiments, two sensing contacts are arranged along the extension and retraction direction of the second positioning member, and the two sensing contacts are arranged at intervals and form an intermediate position, so that the conductive component can contact any of the sensing contacts or the intermediate position to indicate the displacement of the second positioning member relative to the first positioning member.

[0023] By adopting the above technical solution, three degrees of displacement, namely, excessive powder, qualified powder and insufficient powder, can be detected through two sensing contacts and the middle position, which is convenient and quick.

[0024] In some embodiments, a driving assembly is further included, wherein the driving assembly is disposed outside the first positioning member, and the driving assembly applies a force to the first positioning member, so that the positioning surface of the first positioning member abuts against the powder surface, and the positioning needle of the second positioning member pierces the powder and abuts against the bottom surface of the hole;

[0025] The driving assembly includes a driving member and a buffer member. The driving member is sleeved on the outer side of the first positioning member, and the buffer member is arranged between the driving member and the first positioning member.

[0026] By adopting the above technical solution, the driving member pushes the first positioning member through the buffer member, thereby improving the movement stability of the first positioning member and ensuring that the positioning surface abuts against the powder surface.

[0027] In some embodiments, the first positioning member includes a first sleeve, a transfer sleeve, and a second sleeve connected in sequence, the transfer sleeve is a T-shaped sleeve, a larger end of the transfer sleeve is slidably connected to the first sleeve, and a smaller end of the transfer sleeve is detachably connected to the second sleeve, the second positioning member is movably arranged in the transfer sleeve and the second sleeve, a pressing block is arranged at one end of the second sleeve away from the first sleeve, a portion of the second sleeve used for extending into the hole and the pressing block form the extending portion, and an end surface of the pressing block away from the second sleeve is the positioning surface;

[0028] The driving member is movably sleeved on the smaller end of the adapter sleeve and can abut against the end surface of the larger end of the adapter sleeve.

[0029] By adopting the above technical scheme, a first positioning member is formed by a first sleeve, an adapter sleeve and a second sleeve, which is convenient for assembly and maintenance, and universal parts are used to reduce costs; a positioning surface is formed by a pressing block, which improves the flattening effect of the powder in the hole, and ensures the flatness of the positioning surface during long-term use, thereby improving the detection accuracy; the driving member abuts against the larger end of the adapter sleeve to achieve support of the first positioning member by the driving member, thereby simplifying the structure of the detection device and improving the compactness of the detection device.

[0030] In some embodiments, the second positioning member includes a T-shaped linkage rod and a main linkage rod connected in sequence, the positioning pin is detachably arranged at the end of the main linkage rod, the T-shaped linkage rod is adapted to the adapter sleeve, and can abut against the inner step surface of the adapter sleeve, so that there is a gap between the end of the main linkage rod and the pressure block;

[0031] The reset member is arranged between the main linkage rod and the adapter sleeve.

[0032] By adopting the above technical solution, the T-shaped linkage rod is abutted against the inner step surface of the adapter sleeve, and the reset member is arranged between the main linkage rod and the adapter sleeve, so that when the second positioning member is not extended or retracted, it is restricted in the first positioning member by the reset member and the adapter sleeve, thereby preventing the second positioning member from applying a pushing force to the pressure block, causing the pressure block to move relative to the second sleeve, thereby affecting the detection accuracy.

[0033] In some embodiments, the detection component includes a sensor and a sensing sheet adapted to the sensor, one of the sensor and the sensing sheet is arranged in the first positioning member, and the other is arranged on the second positioning member, and the sensor indicates the displacement of the second positioning member relative to the first positioning member by changing the sensing signal generated by the sensing sheet.

[0034] In some embodiments, the positioning components and the detection components are arranged in a plurality in corresponding arrays, and the plurality of detection components are connected to the same alarm.

[0035] By adopting the above technical solution, multiple detections can be realized simultaneously, and by connecting multiple detection components to the same alarm, the detection efficiency can be further improved.

[0036] In some embodiments, the elastic member applies a pushing force of 1-1.5N to the conductive ball, and the reset member applies a pushing force of 4-6N to the second positioning member.

[0037] In some embodiments, the inner walls of the T-shaped linkage rod and the adapter sleeve are both chamfered.

[0038] Other features and corresponding beneficial effects of the present application are described in the latter part of the specification, and it should be understood that at least some of the beneficial effects become obvious from the records in the specification of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 This is a schematic diagram of the structure of this application;

[0040] Figure 2 (a)-(c) are schematic diagrams of the structures of the conducting components of three structures in this application;

[0041] Figure 3 This is another structural diagram of this application.

[0042] Description of reference numerals:

[0043] 1. Part to be tested; 11. Powder; 100. First positioning member; 101. First sleeve; 102. Adapter sleeve; 103. Second sleeve; 104. Press block; 110. Insertion portion; 111. Positioning surface;

[0044] 200, second positioning member; 201, T-shaped linkage rod; 202, main linkage rod; 203, positioning pin; 210, reset member;

[0045] 300, conduction component; 310, limit cavity; 311, limit channel; 320, elastic member; 330, conductive ball; 331, mounting shell; 332, auxiliary ball;

[0046] 400, driving member; 410, buffer member; 411, limiting member;

[0047] 500, sensor; 510, sensor sheet DETAILED DESCRIPTION

[0048] The following specific embodiments illustrate the implementation of the present application, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Although the description of the present application will be introduced in conjunction with the preferred embodiment, this does not mean that the features of this application are limited to the implementation. On the contrary, the purpose of introducing the application in conjunction with the implementation is to cover other options or modifications that may be extended based on the claims of the present application. In order to provide a deep understanding of the present application, the following description will include many specific details. The present application can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the present application, some specific details will be omitted in the description. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0049] It should be noted that in this specification, similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0050] The technical solution of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0051] In the description of the present application, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description created by the present application, unless otherwise specified, "multiple" means two or more.

[0052] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0053] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below in conjunction with the accompanying drawings.

[0054] See also Figure 1 , Figure 1 This is a schematic diagram of the structure of a detection device for detecting the amount of powder placed at the bottom of a hole in the present application.

[0055] The embodiment of the present application provides a detection device for detecting the amount of powder placed at the bottom of a hole, which is used to detect the amount of powder placed at the bottom of a hole, takes into account both detection accuracy and detection efficiency, and is particularly suitable for deep hole powder amount detection.

[0056] The detection device for detecting the amount of powder placed at the bottom of a hole comprises a positioning component and a detection component.

[0057] The positioning assembly includes a first positioning member 100 and a second positioning member 200 movably disposed in the first positioning member 100 .

[0058] The first positioning member 100 includes an insertion portion 110 , an end surface of the insertion portion 110 is configured as a positioning surface 111 , and the insertion portion 110 is used to insert into the hole and make the positioning surface 111 abut against the powder surface, that is, to position the powder surface.

[0059] One end of the second positioning member 200 is provided with a positioning pin 203. The second positioning member 200 is provided with a reset member 210, and the reset member 210 applies a driving force to the second positioning member 200, so that the positioning pin 203 of the second positioning member 200 penetrates the positioning surface 111 of the first positioning member 100 and extends out of the positioning surface 111 by a first distance, and the first distance is greater than the thickness of the powder, that is, the end of the positioning pin 203 can pass through the powder and abut against the bottom surface of the hole, thereby locating the bottom of the hole, eliminating the hole processing error or the placement error relative to the detection device, and improving the detection accuracy.

[0060] And because the first positioning member 100 and the second positioning member 200 are movably connected, the bottom of the positioning hole of the second positioning member 200 can be positioned synchronously with the positioning surface 111 of the first positioning member 100 to position the powder surface in the hole, thereby realizing one-time detection, thereby improving detection accuracy while taking into account detection efficiency.

[0061] The detection component is arranged on the positioning component and is used to detect the displacement of the second positioning member 200 relative to the first positioning member 100. The amount of powder can be obtained through the displacement, that is, the difference between the first distance and the displacement.

[0062] In one embodiment, the reset element 210 is a spring or a spring, which ensures that the end of the positioning pin 203 can pass through the powder and abut against the bottom surface of the hole through elastic abutment force.

[0063] In other alternative embodiments, the reset member 210 is a counterweight block, which ensures that the end of the positioning pin 203 can pass through the powder and abut the bottom surface of the hole through gravity.

[0064] In one embodiment, the reset member 210 applies a pushing force of 4-6N to the second positioning member 200 to avoid the situation where the pushing force is too small, causing the second positioning member 200 to be unable to overcome the friction between it and the first positioning member 100 and move, resulting in jamming; at the same time, it is also avoided that the pushing force is too large, causing the end of the positioning needle 203 of the second positioning member 200 to pass through the powder and then continue to pass through the bottom surface of the hole, causing damage to the test piece and leakage of powder.

[0065] In one embodiment, the detection component includes a sensing contact and a conducting component 300. The sensing contact is disposed on the side of one end of the first positioning member 100 away from the insertion portion 110, and the conducting component 300 is disposed on one end of the second positioning member 200 away from the positioning pin 203, and the conducting component 300 can be in contact with the sensing contact to indicate the displacement of the second positioning member 200 relative to the first positioning member 100, that is, the displacement of the second positioning member 200 relative to the first positioning member 100 is converted into an electrical signal, which further improves the detection accuracy and detection efficiency.

[0066] In other alternative embodiments, the detection component is a pressure sensor, such as a thin film pressure sensor, which converts the change of stroke into the change of pressure.

[0067] In one embodiment, the detection device further includes a driving component. The driving component is disposed outside the first positioning member 100, and the driving component applies a force to the first positioning member 100, so that the positioning surface 111 of the first positioning member 100 abuts against the powder surface, and the positioning needle 203 of the second positioning member 200 pierces the powder and abuts against the bottom surface of the hole, that is, the force of the driving component needs to be greater than the driving force of the reset member 210 of the second positioning member 200.

[0068] In one embodiment, the driving assembly includes a driving member 400 and a buffer member 410. The driving member 400 is sleeved on the outside of the first positioning member 100, and the buffer member 410 is arranged between the driving member 400 and the first positioning member 100. The driving member 400 pushes the first positioning member 100 through the buffer member 410, thereby improving the movement stability of the first positioning member 100 and ensuring that the positioning surface 111 abuts against the powder surface.

[0069] The buffer member 410 may be a spring or a spring, etc. One end of the buffer member 410 abuts against the driving member 400 , and the other end abuts against a stop member 411 disposed outside the first positioning member 100 .

[0070] In one embodiment, the elastic coefficient of the buffer member 410 is greater than the elastic coefficient of the restoring member 210 .

[0071] In other alternative embodiments, the driving assembly does not include the buffer member 410 , and the driving member 400 directly pushes the first positioning member 100 .

[0072] In one embodiment, the first positioning member 100 includes a first sleeve 101, a transition sleeve 102, and a second sleeve 103 that are connected in sequence, which facilitates assembly and maintenance, and uses common parts to reduce costs.

[0073] In one embodiment, the adapter sleeve 102 is a T-shaped sleeve, that is, the adapter sleeve 102 has a relatively large end and a relatively small end, and an inner step surface is formed inside the junction, and an outer step surface is formed on the corresponding outside. The larger end of the adapter sleeve 102 is slidably connected to the first sleeve 101, and the smaller end of the adapter sleeve 102 is detachably connected to the second sleeve 103, such as a snap connection or a threaded connection, so as to facilitate disassembly and maintenance.

[0074] In one embodiment, the second positioning member 200 is movably disposed in the adapter sleeve 102 and the second sleeve 103 .

[0075] In one embodiment, a pressing block 104 is provided at one end of the second sleeve 103 away from the first sleeve 101, and the portion of the second sleeve 103 used to extend into the hole and the pressing block 104 form an extending portion 110, and the end surface of the pressing block 104 away from the second sleeve 103 is a positioning surface 111. The positioning surface 111 is formed by the pressing block 104 having a certain strength and weight, which improves the flattening effect of the powder in the hole and ensures the flatness of the positioning surface 111 during long-term use, thereby improving the detection accuracy.

[0076] In one embodiment, the driving member 400 is movably mounted on the smaller end of the adapter sleeve 102 and can abut against the larger end surface of the adapter sleeve 102, i.e., the outer step surface, so that the first positioning member 100 is supported by the driving member 400, which simplifies the structure of the detection device and improves the compactness of the detection device.

[0077] In one embodiment, the second positioning member 200 includes a T-shaped linkage rod 201 and a main linkage rod 202 connected in sequence, and the positioning pin 203 is detachably arranged at the end of the main linkage rod 202. The T-shaped linkage rod 201 is adapted to the adapter sleeve 102 and can abut against the inner step surface of the adapter sleeve 102, so that there is a gap between the end of the main linkage rod 202 and the pressure block 104.

[0078] This method ensures that when the second positioning member 200 is not extended or retracted, the second positioning member 200 is restricted in the first positioning member 100 through the reset member 210 and the adapter sleeve 102, thereby preventing the second positioning member 200 from directly applying a pushing force to the pressing block 104, causing the pressing block 104 to move relative to the second sleeve 103, thereby affecting the detection accuracy.

[0079] Furthermore, the variable diameter structure of the adapter sleeve 102 allows for a larger space at the upper end thereof, thereby allowing the end of the second positioning member 200 that is away from the positioning pin 203 to have a larger volume, and the conductive component 300 to have a larger installation space. That is, the device adopts a T-shaped linkage rod 201, and the conductive component 300 is disposed at the larger end of the T-shaped linkage rod 201, thereby facilitating the arrangement of the conductive component 300 and reducing the size requirements for the conductive component 300, thereby ensuring the reliability of the conductive component 300 while controlling costs.

[0080] In one embodiment, the inner walls of the T-shaped linkage rod 201 and the adapter sleeve 102 are both chamfered, that is, the diameter-changing edge of the T-shaped linkage rod 201 is beveled, and the inner edge seat of the diameter-changing edge of the adapter sleeve 102 is beveled, thereby reducing the resistance when the two move relative to each other and improving the telescopic stability.

[0081] In one embodiment, the reset member 210 is disposed between the main linkage rod 202 and the adapter sleeve 102 .

[0082] In one embodiment, a plurality of positioning components and detection components are provided in corresponding arrays, so that batch detection can be completed synchronously, thereby improving the overall detection efficiency.

[0083] In one embodiment, multiple detection components are connected to the same alarm. It is understandable that the detection component can only output a qualified signal and / or a failed signal, and if the detection result of any detection component is unqualified, that is, the amount of powder in any hole is unqualified, the alarm will sound, which can further improve the detection efficiency.

[0084] Please refer to FIG. 2( a ), which is a schematic structural diagram of a conductive component 300 .

[0085] In one embodiment, the conduction component 300 includes a limiting cavity 310 , and the limiting cavity 310 includes a cavity bottom and an opening that are relatively arranged, and the opening direction of the limiting cavity 310 is perpendicular to the extension direction of the second positioning member 200 .

[0086] The conductive component 300 also includes an elastic member 320 and a conductive ball 330. The two ends of the elastic member 320 respectively abut the bottom of the limiting cavity 310 and the conductive ball 330, and enable the conductive ball 330 to contact and conduct with the sensing contact. That is, after the conductive component 300 is installed at the end of the second positioning member 200, the conductive ball 330 maintains contact with the inner wall of the first positioning member 100 through the elastic member 320, and can contact and conduct with the sensing contact arranged on the inner wall of the first positioning member 100, thereby indicating the displacement of the second positioning member 200 relative to the first positioning member 100; at the same time, the contact stability between the conductive ball 330 and the sensing contact, as well as the telescopic stability of the second positioning member 200 are improved.

[0087] In this embodiment, one conductive component 300 may be provided, or multiple conductive components 300 may be provided around the circumference of the second positioning member 200. Accordingly, multiple conductive components 300 are provided corresponding to the sensing contacts, thereby preventing detection problems caused by failure of a single conductive component 300 or the corresponding sensing contact, thereby improving detection reliability.

[0088] Please refer to FIG. 2( b ), which is a schematic diagram of the structure of another conductive component 300 .

[0089] In one embodiment, the conductive component 300 further includes a mounting shell 331 and a plurality of auxiliary balls 332 disposed in the mounting shell 331 . The conductive ball 330 is disposed in the mounting shell 331 and contacts the plurality of auxiliary balls 332 , so that the conductive ball 330 can roll in the mounting shell 331 .

[0090] The conductive ball 330 is in contact with the elastic member 320 through the mounting shell 331, so that when the second positioning member 200 is extended or retracted, the conductive component moves with the second positioning member 200 and the conductive ball 330 can roll relative to the inner wall of the first positioning member 100, thereby reducing the friction between the two and improving the extension and retraction stability of the second positioning member 200, thereby improving the detection accuracy and reliability, that is, avoiding the deviation of the conductive component relative to the extension and retraction direction due to excessive friction, thereby affecting the detection accuracy, and avoiding the extension and retraction being blocked due to excessive deviation, thereby affecting the detection operation.

[0091] Similarly, in this embodiment, one conducting component 300 may be provided, or a plurality of conducting components 300 may be provided around the circumference of the second positioning member 200 .

[0092] Please refer to FIG. 2( c ), which is a schematic diagram of the structure of another conductive component 300 .

[0093] In one embodiment, the conducting component 300 includes a limiting channel 311 , the limiting channel 311 includes two openings that are arranged opposite to each other, and an extending direction of the limiting channel 311 is perpendicular to a telescopic direction of the second positioning member 200 .

[0094] The conducting assembly 300 further includes an elastic member 320 and two conductive balls 330 respectively abutting against two ends of the elastic member 320 , so that the conductive balls 330 can be in contact with the sensing contact points for conduction.

[0095] This method ensures that both sides of the conductive component 300 exert the same force on the first positioning component 100 by arranging an elastic member 320 in the limiting channel 311 and symmetrically arranging conductive balls 330 at both ends of the elastic member 320, thereby improving the balance of the second positioning component 200 in the vertical telescopic direction, thereby improving the stability of the conductive component 300 during long-term use, and further improving the telescopic stability of the second positioning component 200; at the same time, it is also convenient to select the elastic coefficient of the elastic member 320 so that rolling friction occurs between the conductive balls 330 on both sides and the inner wall of the first positioning component 100, thereby further improving the telescopic stability of the second positioning component 200.

[0096] In one embodiment, the elastic member 320 applies a pushing force of 1-1.5N to the conductive ball 330, thereby preventing the pushing force from being too small, causing the conductive component 300 to deviate during the movement of the second positioning member 200, thereby causing the second positioning member 200 to deviate or even get stuck; and preventing the pushing force from being too large, causing the conductive ball 330 to move poorly relative to the inner wall of the first positioning member 100, thereby affecting the telescopic movement of the second positioning member 200.

[0097] In the above embodiments, the elastic member 320 may be a spring, a spring, or the like.

[0098] In the above embodiment, preferably, the elastic member 320 is a conductive member, and the elastic member 320 is connected to a ground wire, so as to conveniently implement a detection circuit.

[0099] In one embodiment, two sensing contacts are arranged along the extension and retraction direction of the second positioning member 200, and the two sensing contacts are arranged at intervals and form an intermediate position, so that the conductive component 300 can contact any sensing contact or the intermediate position to indicate the displacement of the second positioning member 200 relative to the first positioning member 100. That is, through the two sensing contacts and the intermediate position, three degrees of displacement, namely, detection of excess powder, qualified powder and insufficient powder can be achieved, which is convenient and quick.

[0100] In other alternative embodiments, a plurality of sensing contacts, such as 3, 5 or more, are provided along the extension and retraction direction of the second positioning member 200, so that the amount of powder can be detected more accurately.

[0101] See also Figure 3 , Figure 3 This is a schematic diagram of the structure of another detection device for detecting the amount of powder placed at the bottom of a hole in the present application, wherein the main difference is the difference in the detection components.

[0102] In one embodiment, the detection assembly includes a sensor 500 and a sensing sheet 510 adapted to the sensor 500 . The sensor 500 indicates the displacement of the second positioning member 200 relative to the first positioning member 100 by changing the sensing signal generated by the sensing sheet 510 .

[0103] Specifically, one of the sensor 500 and the sensing sheet 510 is disposed in the first positioning member 100, and the other is disposed on the second positioning member 200. For example, the sensor 500 is disposed in the first positioning member 100 and faces the top end of the second positioning member 200, and the sensing sheet 510 is disposed at the top end of the second positioning member 200. Therefore, when the second positioning member 200 is displaced relative to the first positioning member 100, the distance between the sensing sheet 510 and the sensor 500 changes, causing the sensing signal to change, thereby indicating the displacement of the second positioning member 200 relative to the first positioning member 100.

[0104] The sensor 500 may be a position sensor, a magnetic sensor, an infrared sensor, an ultrasonic sensor, etc. The induction signal generated by the sensor 500 and the induction sheet 510 may vary, and may be such that there is an induction signal within the induction range, and there is no induction signal outside the induction range. Moreover, when there is an induction signal, it may be considered that the amount of powder is too small, and the distance between the induction sheet 510 and the sensor 500 is too small, thereby triggering a bad signal.

[0105] In one embodiment, the detection device also includes a clamping assembly, which clamps the part to be detected 1 and moves the part to be detected 1 to the bottom of the positioning assembly by horizontal movement. A certain vibration can also be generated during the horizontal movement, so that the powder 11 in the hole is more evenly distributed at the bottom of the hole instead of being accumulated in a cone shape, thereby avoiding the height of the cone-shaped accumulation of the powder 11 being greater than the first distance that the positioning needle extends out of the positioning surface, resulting in the second positioning part retracting and bringing the powder 11 into the first positioning part, causing the second positioning part to be stuck and affecting the actual powder amount of the subsequent part to be detected 1.

[0106] In one embodiment, the clamping assembly includes a two-axis moving module and a clamping plate arranged on the two-axis moving module, the clamping plate is used to clamp and fix the part to be detected 1, and the two-axis moving module drives the clamping plate to move horizontally and move to the bottom of the positioning assembly.

[0107] In one embodiment, a clamping hole matching the size of the to-be-detected piece 1 is provided on the clamping plate, and the to-be-detected piece 1 is fixed through the clamping hole.

[0108] When there are multiple positioning components and detection components corresponding to the array, the clamping plate is provided with multiple clamping holes corresponding to the array.

[0109] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A detection device for detecting the amount of powder placed at the bottom of a hole, characterized in that: Including positioning components and detection components; The positioning assembly includes a first positioning member and a second positioning member movably disposed in the first positioning member; The first positioning member comprises an extending portion, an end surface of the extending portion is configured as a positioning surface, and the extending portion is used to extend into the hole and make the positioning surface abut against the powder surface; One end of the second positioning member is configured as a positioning needle, and the second positioning member is provided with a reset member, and the reset member applies a pushing force to the second positioning member, so that the positioning needle of the second positioning member penetrates the positioning surface of the first positioning member and extends out of the positioning surface by a first distance, and the first distance is greater than the thickness of the powder; The detection component is arranged on the positioning component and is used for detecting the displacement of the second positioning member relative to the first positioning member.

2. The detection device for detecting the amount of powder placed at the bottom of a hole according to claim 1, characterized in that: The detection component includes a sensing contact and a conductive component, wherein the sensing contact is arranged on the side of an end of the first positioning member away from the extending portion, and the conductive component is arranged on an end of the second positioning member away from the positioning needle, and the conductive component can be in contact with the sensing contact to indicate the displacement of the second positioning member relative to the first positioning member.

3. The detection device for detecting the amount of powder placed at the bottom of a hole according to claim 2, characterized in that: The conduction component comprises a limiting cavity, the limiting cavity comprises a cavity bottom and an opening which are arranged opposite to each other, and the opening direction of the limiting cavity is perpendicular to the extension direction of the second positioning member; The conduction component further includes an elastic member and a conductive ball. Two ends of the elastic member respectively abut against the bottom of the limiting cavity and the conductive ball, so that the conductive ball can be in contact with the sensing contact for conduction.

4. The detection device for detecting the amount of powder placed at the bottom of a hole according to claim 3, characterized in that: The conduction component further includes a mounting shell and a plurality of auxiliary balls disposed in the mounting shell. The conductive balls are disposed in the mounting shell and in contact with the plurality of auxiliary balls, and the conductive balls abut against the elastic member through the mounting shell.

5. The detection device for detecting the amount of powder placed at the bottom of a hole according to claim 2, characterized in that: The conducting component includes a limiting channel, the limiting channel includes two openings arranged opposite to each other, and the extending direction of the limiting channel is perpendicular to the telescopic direction of the second positioning member; The conducting component further comprises an elastic member and two conductive balls respectively abutting against two ends of the elastic member, so that the conductive balls can be in contact with the sensing contact point for conduction.

6. The detection device for detecting the amount of powder placed at the bottom of a hole according to any one of claims 2 to 5, characterized in that: Two sensing contacts are arranged along the extension and retraction direction of the second positioning member, and the two sensing contacts are arranged at intervals and form an intermediate position, so that the conductive component can contact any of the sensing contacts or the intermediate position to indicate the displacement of the second positioning member relative to the first positioning member.

7. The detection device for detecting the amount of powder placed at the bottom of a hole according to claim 1, characterized in that: The invention also includes a driving component, which is arranged outside the first positioning member and applies a force to the first positioning member, so that the positioning surface of the first positioning member abuts against the powder surface, and the positioning needle of the second positioning member pierces the powder and abuts against the bottom surface of the hole; The driving assembly includes a driving member and a buffer member. The driving member is sleeved on the outer side of the first positioning member, and the buffer member is arranged between the driving member and the first positioning member.

8. The detection device for detecting the amount of powder placed at the bottom of a hole according to claim 7, characterized in that: The first positioning member comprises a first sleeve, a transfer sleeve and a second sleeve which are connected in sequence, the transfer sleeve is a T-shaped sleeve, a larger end of the transfer sleeve is slidably connected to the first sleeve, and a smaller end of the transfer sleeve is detachably connected to the second sleeve, the second positioning member is movably arranged in the transfer sleeve and the second sleeve, a pressing block is arranged at one end of the second sleeve away from the first sleeve, a portion of the second sleeve used for extending into the hole and the pressing block form the extending portion, and an end surface of the pressing block away from the second sleeve is the positioning surface; The driving member is movably sleeved on the smaller end of the adapter sleeve and can abut against the end surface of the larger end of the adapter sleeve.

9. The detection device for detecting the amount of powder placed at the bottom of a hole according to claim 8, characterized in that: The second positioning member comprises a T-shaped linkage rod and a main linkage rod connected in sequence, the positioning pin is detachably arranged at the end of the main linkage rod, the T-shaped linkage rod is adapted to the adapter sleeve, and can abut against the inner step surface of the adapter sleeve, so that there is a gap between the end of the main linkage rod and the pressure block; The reset member is arranged between the main linkage rod and the adapter sleeve.

10. The detection device for detecting the amount of powder placed at the bottom of a hole according to claim 1, characterized in that: The detection component includes a sensor and a sensing sheet adapted to the sensor, one of the sensor and the sensing sheet is arranged in the first positioning member, and the other is arranged on the second positioning member, and the sensor indicates the displacement of the second positioning member relative to the first positioning member by changing the sensing signal generated by the sensor and the sensing sheet.

11. The detection device for detecting the amount of powder placed at the bottom of a hole according to claim 1, characterized in that: The positioning components and the detection components are arranged in a plurality of corresponding arrays, and the plurality of detection components are connected to the same alarm.

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