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. The utility model provides a detection device. The detection device comprises a positioning assembly and a pressure sensor, 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 abuts against an elastic piece, the elastic piece applies pushing force to the second positioning piece, the positioning needle of the second positioning piece penetrates through the positioning face of the first positioning piece and extends out of the positioning face by a first distance, and the first distance is larger than the powder thickness; the pressure sensor is arranged at the end, away from the stretching-in part, of the first positioning piece and abuts against the elastic piece so as to detect the elastic force of the elastic 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 pressure sensor;

[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 abuts against an elastic member, and the elastic 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 pressure sensor is disposed at an end of the first positioning member away from the extending portion and is in contact with the elastic member to detect the elastic force of the elastic 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 and takes into account the detection efficiency; at the same time, the two ends of the elastic member respectively abut the second positioning member and the pressure sensor, so that a driving force is applied to the second positioning member to ensure that the positioning needle locates the bottom of the hole, and the relative displacement of the first positioning member and the second positioning member is converted into a change in the elastic force of the elastic member, and directly transmitted to the pressure sensor, thereby realizing the detection of the powder amount by the pressure change, the structure is simple, and through the continuous data acquisition capability of the pressure sensor, the upper and lower limits of detection can be flexibly adjusted, and it is convenient to use.

[0012] 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;

[0013] The driving assembly includes a driving member and a buffer member. The driving member is sleeved on the outside of the first positioning member, and the buffer member is arranged between the driving member and the first positioning member.

[0014] 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.

[0015] In some embodiments, the first positioning member has a first abutting surface and a second abutting surface on the outer side, and the first abutting surface and the second abutting surface are sequentially arranged opposite to each other along the extending direction of the first positioning member;

[0016] The driving component is disposed between the first abutting surface and the second abutting surface, the driving member abuts against the first abutting surface, and the buffer member abuts against the second abutting surface.

[0017] In some embodiments, the first positioning member includes a cylinder, a pressing block is detachably provided at the end of the cylinder, and an end surface of the pressing block facing away from the cylinder is the positioning surface;

[0018] The second positioning member is movably disposed in the cylinder.

[0019] By adopting the above technical solution, the positioning surface is formed by the 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.

[0020] In some embodiments, the diameter of the first positioning member is smaller than the aperture of the member to be detected, and the diameter of the pressing block located outside the first positioning member is adapted to the aperture of the member to be detected.

[0021] By adopting the above technical solution, there is a gap between the first positioning member and the hole wall of the part to be detected, and the pressure block located outside the first positioning member is used for guidance. While maintaining the stability of the first positioning member, the resistance to insertion is reduced, the detection efficiency is improved, and high-beat detection can be achieved.

[0022] In some embodiments, the second positioning member includes a linkage rod, the positioning pin is detachably disposed at the end of the linkage rod, and the elastic member is disposed at the top end of the linkage rod.

[0023] The above technical solution facilitates the maintenance and replacement of the positioning needle, thereby reducing the detection cost; and by replacing positioning needles of different lengths, it can be adapted to different powder quantity detections, thereby improving the versatility of the detection device.

[0024] In some embodiments, the linkage rod includes a main rod portion and two limiting portions respectively arranged at two ends of the main rod portion, wherein the limiting portions protrude from the side of the main rod portion and are adapted to the inner cavity of the first positioning member.

[0025] By adopting the above technical solution, the movement of the second positioning member in the first positioning member is limited by the limiting portion, thereby improving the movement stability of the second positioning member relative to the first positioning member and improving the detection efficiency, thereby realizing high-beat detection.

[0026] In some embodiments, the positioning components and the pressure sensors are arranged in a plurality of corresponding arrays, and the plurality of pressure sensors are connected to the same alarm.

[0027] By adopting the above technical solution, multiple detections can be realized simultaneously, and by connecting multiple pressure sensors to the same alarm, the detection efficiency can be further improved.

[0028] 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

[0029] Figure 1 This is a schematic diagram of the structure of this application.

[0030] Description of reference numerals:

[0031] 1. Parts to be tested; 11. Powder;

[0032] 100, first positioning member; 101, cylinder; 102, pressing block; 103, first abutting surface; 104, second abutting surface; 110, extending portion; 111, positioning surface;

[0033] 200, second positioning member; 210, positioning needle; 220, elastic member; 230, linkage rod; 231, main rod portion; 232, limiting portion;

[0034] 300, pressure sensor; 310, wire;

[0035] 400, driving member; 410, buffer member. DETAILED DESCRIPTION

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] 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 of a to-be-detected piece 1, taking into account both detection accuracy and detection efficiency, and is particularly suitable for deep hole powder amount detection.

[0044] The detection device includes a positioning component and a pressure sensor 300 .

[0045] The positioning assembly includes a first positioning member 100 and a second positioning member 200 movably disposed in the first positioning member 100 , that is, the first positioning member 100 has an inner cavity, and the second positioning member 200 is movably disposed in the inner cavity of the first positioning member 100 .

[0046] 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 surface of the powder 11 , thereby positioning the surface of the powder 11 .

[0047] One end of the second positioning member 200 is provided with a positioning pin 210. The second positioning member 200 is abutted against an elastic member 220, and the elastic member 220 applies a driving force to the second positioning member 200, so that the positioning pin 210 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 11, so that the end of the positioning pin 210 can pass through the powder 11 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.

[0048] 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 on the surface of the powder 11 in the positioning hole, thereby realizing one-time detection, thereby improving detection accuracy while taking into account detection efficiency.

[0049] The pressure sensor 300 is arranged at one end of the first positioning member 100 away from the extension portion 110, and abuts against the elastic member 220 to detect the elastic force of the elastic member 220, that is, the two ends of the elastic member 220 abut against the second positioning member 200 and the pressure sensor 300 respectively, so as to apply a pushing force to the second positioning member 200 to ensure that the positioning needle 210 is positioned at the bottom of the hole, and convert the relative displacement of the first positioning member 100 and the second positioning member 200 into a change in the elastic force of the elastic member 220, and directly transmit it to the pressure sensor 300, thereby realizing the detection of the powder amount by the pressure change, that is, the pressure change reflects the displacement, and the powder amount is the difference between the first distance and the displacement, and the structure is simple, and the detection cost can be controlled.

[0050] At the same time, since the pressure sensor 300 has the ability to continuously collect data, it can not only detect the shortage of powder 11, but also detect the excess of powder 11, so that the product control can truly meet the specification requirements, and the upper and lower limits of detection can be flexibly adjusted, which is convenient to use.

[0051] Furthermore, the pressure sensor 300 is disposed at the top of the first positioning member 100 to facilitate the arrangement of its wires 310 .

[0052] In one embodiment, the elastic member 220 is a spring or a spring, which ensures that the end of the positioning needle 210 can pass through the powder 11 and abut against the bottom surface of the hole through the elastic abutting force.

[0053] In one embodiment, the elastic member 220 applies a pushing force of 4-6N to the second positioning member 200 to avoid the pushing force being too small, resulting in the second positioning member 200 being unable to overcome the friction between it and the first positioning member 100 and moving, causing it to get stuck; at the same time, it is also avoided that the pushing force is too large, resulting in the end of the positioning needle 210 of the second positioning member 200 passing through the powder 11 and then continuing to pass through the bottom surface of the hole, causing damage to the test piece 1 and leakage of the powder 11.

[0054] In one embodiment, the first positioning member 100 includes a cylinder 101, and a pressure block 102 is detachably provided at the end of the cylinder 101. The end surface of the pressure block 102 facing away from the cylinder 101 is a positioning surface 111, that is, the positioning surface 111 is formed by the pressure block 102, which improves the flattening effect of the powder 11 in the hole and ensures the flatness of the positioning surface 111 during long-term use, thereby improving the detection accuracy.

[0055] At this time, the second positioning member 200 is movably disposed in the cylinder 101 .

[0056] In one embodiment, the diameter of the first positioning member 100 is smaller than the aperture of the member to be detected 1, and the diameter of the pressure block 102 located on the outside of the first positioning member 100 is adapted to the aperture of the member to be detected 1, so that the first positioning member 100 is spaced apart from the hole wall of the member to be detected 1, and is guided by the pressure block 102 located on the outside of the first positioning member 100, thereby reducing the resistance to insertion while maintaining the stability of the first positioning member 100, thereby improving the detection efficiency and achieving high-beat detection.

[0057] In one embodiment, the second positioning member 200 includes a linkage rod 230, and the positioning needle 210 is detachably arranged at the end of the linkage rod 230, so as to facilitate the maintenance and replacement of the positioning needle 210, thereby reducing the detection cost. By replacing the positioning needle 210 of different lengths, different powder amount detections can be adapted, thereby improving the versatility of the detection device.

[0058] At this time, the elastic member 220 is disposed at the top end of the linkage rod 230 .

[0059] In one embodiment, the linkage rod 230 includes a main rod portion 231 and two limiting portions 232 respectively arranged at both ends of the main rod portion 231. The limiting portions 232 protrude from the side of the main rod portion 231 and are adapted to the inner cavity of the first positioning member 100. That is, the movement of the second positioning member 200 in the first positioning member 100 is limited by the limiting portions 232, thereby improving the movement stability of the second positioning member 200 relative to the first positioning member 100, and improving the detection efficiency, thereby realizing high-beat detection.

[0060] 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 surface of the powder 11, and the positioning needle 210 of the second positioning member 200 pierces the powder 11 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 elastic member 220 of the second positioning member 200.

[0061] 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 surface of the powder 11.

[0062] The buffer member 410 may be a spring or a spring.

[0063] In one embodiment, the elastic modulus of the buffer member 410 is greater than that of the elastic member 220 .

[0064] In one embodiment, the first positioning member 100 has a first abutting surface 103 and a second abutting surface 104 on its outer side, and the first abutting surface 103 and the second abutting surface 104 are arranged opposite to each other in sequence along the extending direction of the first positioning member 100 .

[0065] The driving assembly is disposed between the first abutting surface 103 and the second abutting surface 104 , and the driving member 400 abuts against the first abutting surface 103 , and the buffer member 410 abuts against the second abutting surface 104 .

[0066] In other alternative embodiments, the driving assembly does not include the buffer member 410 , and the driving member 400 directly drives the first positioning member 100 .

[0067] In one embodiment, a plurality of positioning components and corresponding arrays of pressure sensors 300 are provided, so that batch detection can be completed synchronously, thereby improving the overall detection efficiency.

[0068] In one embodiment, multiple pressure sensors 300 are connected to the same alarm to realize a unified alarm for the same batch. For example, if the amount of powder in any hole is unqualified, the alarm will sound, which can further improve the detection efficiency.

[0069] In one embodiment, the detection device also includes a clamping assembly, which clamps the detected piece 1 and moves the detected piece 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 210 extends out of the positioning surface 111, resulting in the second positioning piece 200 retracting and bringing the powder 11 into the first positioning piece 100, causing the second positioning piece 200 to be stuck during extension and extension, and affecting the actual amount of powder in the subsequent detected piece 1.

[0070] 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.

[0071] In one embodiment, a clamping hole adapted to 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.

[0072] When a plurality of positioning components and pressure sensors 300 are arranged in corresponding arrays, a plurality of clamping holes are arranged in corresponding arrays on the clamping plate.

[0073] 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 a positioning assembly and a pressure sensor; 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 abuts against an elastic member, and the elastic 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 pressure sensor is disposed at an end of the first positioning member away from the extending portion and is in contact with the elastic member to detect the elastic force of the elastic 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 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.

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 first positioning member has a first abutting surface and a second abutting surface on the outer side, and the first abutting surface and the second abutting surface are sequentially arranged opposite to each other along the extending direction of the first positioning member; The driving component is disposed between the first abutting surface and the second abutting surface, the driving member abuts against the first abutting surface, and the buffer member abuts against the second abutting surface.

4. The detection device for detecting the amount of powder placed at the bottom of a hole according to claim 1, characterized in that: The first positioning member comprises a cylinder, a pressing block is detachably provided at the end of the cylinder, and an end surface of the pressing block facing away from the cylinder is the positioning surface; The second positioning member is movably disposed in the cylinder.

5. The detection device for detecting the amount of powder placed at the bottom of a hole according to claim 4, characterized in that: The diameter of the first positioning member is smaller than the aperture of the member to be detected, and the diameter of the pressing block located outside the first positioning member is matched with the aperture of the member to be detected.

6. The detection device for detecting the amount of powder placed at the bottom of a hole according to claim 1, characterized in that: The second positioning member comprises a linkage rod, the positioning pin is detachably arranged at the end of the linkage rod, and the elastic member is arranged at the top end of the linkage rod.

7. The detection device for detecting the amount of powder placed at the bottom of a hole according to claim 6, characterized in that: The linkage rod comprises a main rod portion and two limiting portions respectively arranged at two ends of the main rod portion, wherein the limiting portions protrude from the side of the main rod portion and are adapted to the inner cavity of the first positioning member.

8. 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 pressure sensors are arranged in a plurality of corresponding arrays, and the plurality of pressure sensors are connected to the same alarm.

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