Electric brush structure applied to high-voltage discharge leakage detection of medicine packaging
By using a positioning plate structure with adjustable needle height and number, combined with a T-shaped pressure plate and bolt fastening mechanism, the problem of brush structures being unable to adapt to diverse drug packaging is solved, achieving efficient current transmission and detection accuracy, while reducing operational complexity and cost.
Patent Information
- Application Number
- CN202520572355.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-28
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-03-28
AI Technical Summary
Existing brush structures are difficult to adapt to pharmaceutical packaging of diverse sizes and shapes, resulting in unstable current transmission, affecting detection accuracy and reliability, and increasing operational complexity and cost.
The positioning plate structure, which allows for adjustable needle height and quantity, combined with a T-shaped pressure plate and bolt fastening mechanism, ensures the stability and reliability of the needles under high-pressure testing environments.
It enables flexible adaptation to drug packaging of different sizes and shapes, ensures stable current transmission and detection accuracy, simplifies the operation process, and reduces detection costs.
Smart Images
Figure CN223883158U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to pharmaceutical mechanical equipment technical field, concretely relates to the electric brush structure for high pressure discharge leak detection of medicine packaging. BACKGROUND
[0002] High pressure discharge leak detector is a kind of instrument widely used in the sealing detection of medicine packaging system. It judges whether there is leakage phenomenon in medicine packaging by detecting the change of current or voltage, and ensures the integrity and safety of medicine packaging.
[0003] The commonly used model is SPAX-HV high pressure discharge leak detector, and the leak detector detects based on high pressure discharge principle. When there is leakage in medicine packaging, the current around medicine packaging will change, and discharge channel is formed. This discharge channel will produce detectable current or voltage signal, and by measuring the change of these signals, whether there is leakage in medicine packaging can be accurately judged.
[0004] In high pressure discharge leak detector, high pressure discharge device is responsible for generating the high voltage electric field required for detection. The device is connected with electric brush by high voltage power supply, and electric brush stably transmits high voltage current to both sides (or surface) of medicine packaging. Electric brush ensures the uniform transmission of current and forms stable electric field on both sides (or surface) of medicine packaging, and this uniform electric field is the basis for accurate detection, and the performance of electric brush directly affects the accuracy and reliability of detection.
[0005] However, the electric brush in the prior art usually adopts fixed structure design, and this design has certain limitations, which is difficult to adapt to diversified size and shape of medicine packaging. Because the size and shape of medicine packaging are different, the electric brush of fixed structure can not closely adhere to different packaging surfaces, so that the current transmission is unstable, and then the accuracy and reliability of detection are affected. In addition, in order to adapt to different sizes of packaging, the operator needs to frequently replace electric brush, so as to increase the complexity of operation and detection cost. UTILITY MODEL CONTENTS
[0006] The utility model intends to provide the electric brush structure for high pressure discharge leak detection of medicine packaging, which can flexibly adapt to diversified size and shape of medicine packaging.
[0007] In order to achieve the above object, the utility model adopts the following technical scheme:
[0008] 1) The electric brush structure applied to high-voltage discharge leak detection of medicine packaging, comprising a positioning plate and a plurality of electric needles, a plurality of through grooves for inserting electric needles are formed on both sides of the upper surface of the positioning plate along the axial direction, the axis of the through groove is perpendicular to the axis of the positioning plate, a plurality of notches are arranged on both sides of the positioning plate along the axial direction, the notches correspond to the through grooves one by one and are communicated, the side wall of the electric needle is higher than the notch, first and second pressing plates are arranged on both sides of the positioning plate respectively, the first and second pressing plates are attached to both sides of the positioning plate respectively, and the bottom of the first and second pressing plates is provided with a fastening mechanism.
[0009] The utility model discloses a high-voltage discharge method is used to the packaging of medicine and carries out the airtightness detection, and the high-voltage discharge leak detector of model SPAX-HV is used. In the detection process, the utility model is installed in the high-voltage discharge detector as a whole, and replaces the original electric brush structure. The high-voltage power supply transmits high voltage to the electric brush through the high-voltage cable, and the positioning plate, the first pressing plate, the second pressing plate and the electric needle of the electric brush are all conductive bodies, and the high voltage is transmitted to the electric needle in turn. The sharp design of the tip of the electric needle makes the electric field highly concentrated, forming a very strong local electric field, thereby realizing corona discharge. By detecting the change of discharge current, the airtightness of medicine packaging can be judged.
[0010] A plurality of through grooves are formed on both sides of the upper surface of the positioning plate, and the through grooves are used for inserting electric needles. The electric needle can move up and down in the through groove along the axial direction, and the operator can adjust the height of the electric needle protruding from the positioning plate according to the shape and size of the medicine packaging, so as to ensure the stable transmission of electric current and the detection accuracy. Secondly, according to the specific size and shape of the medicine packaging, the operator can flexibly select the number and distribution position of the electric needles inserted into the through groove, so as to better adapt to the needs of different packaging.
[0011] For small-sized medicine packaging, the through grooves and electric needles on a single positioning plate can meet the fixing and detection requirements. If the size of the medicine packaging is large, the electric needles on a single positioning plate cannot completely cover the medicine packaging, then two or more positioning plates can be spliced together through a plurality of first and second pressing plates. The combined positioning plate provides more through grooves and can install more electric needles, so as to adapt to larger-sized medicine packaging.
[0012] Because the height and number of electric needles are adjustable, the operator does not need to replace the electric brush for different sizes of medicine packaging, which simplifies the operation process and reduces the operation complexity and detection cost. At the same time, by flexibly adjusting the height, number and distribution of the electric needles, and combining multiple positioning plates, various sizes and shapes of medicine packaging can be adapted to ensure the stable transmission of electric current and the detection accuracy.
[0013] The first pressing plate and the second pressing plate are provided with fastening mechanisms at the bottom, which can firmly fix the positioning plate, so as to prevent the displacement of the positioning plate during the detection, and thus improve the accuracy of the detection.
[0014] When the first pressing plate and the second pressing plate are attached to the two sides of the positioning plate, the first pressing plate and the second pressing plate can directly contact with the side wall of the electric needle, because the side wall of the electric needle is higher than the notch.
[0015] 2) The electric brush structure for high-voltage discharge detection of medicine packaging according to 1), wherein:
[0016] The first pressing plate and the second pressing plate are provided with fastening mechanisms at the bottom, which can firmly fix the positioning plate, so as to prevent the displacement of the positioning plate during the detection, and thus improve the accuracy of the detection.
[0017] In the utility model, the first pressing plate and the second pressing plate are provided with fastening mechanisms at the bottom, which can firmly fix the positioning plate, so as to prevent the displacement of the positioning plate during the detection, and thus improve the accuracy of the detection.
[0018] When the first pressing plate and the second pressing plate are fixed through the fastening mechanisms at the bottom, the first elastic strips are embedded in the first slits, and the second elastic strips are embedded in the second slits, so as to prevent the displacement of the positioning plate during the detection, and thus ensure the stability of the utility model in the high-voltage detection environment, and avoid the influence of the displacement of the positioning plate on the accuracy of the detection.
[0019] In addition, the first elastic strip and the second elastic strip are respectively located at two sides of the positioning plate, and when the electric needle is inserted into the through slot, the side wall of the electric needle at two sides of the positioning plate is in close contact with the first elastic strip and the second elastic strip respectively. The first elastic strip and the second elastic strip apply continuous lateral pressure to the electric needle in contact with them, so that the electric needle is kept stable in the through slot, and loosening or falling off of the electric needle due to external force or vibration is avoided.
[0020] 3) The electric brush structure applied to high-pressure discharge leak detection of medicine packaging according to 2), wherein:
[0021] The first elastic strip and the second elastic strip are made of soft metal material.
[0022] In the utility model, the first elastic strip and the second elastic strip are made of soft metal material, and the material has good elasticity and plasticity. After being extruded and deformed, the soft metal material can restore to the original state. When the first elastic strip is embedded into the first slot, the outer side wall of the first elastic strip can be closely attached to the inner wall of the first slot, and the first slot is completely filled. Through the close attachment, the first elastic strip and the first slot are firmly fixed together, so that the connection between the first vertical plate and the positioning plate is more stable. Similarly, the side wall of the second elastic strip can be closely attached to the inner wall of the second slot, and the second slot is completely filled, and the second elastic strip and the second slot are firmly fixed, so that the connection between the second vertical plate and the positioning plate is more stable.
[0023] In addition, the soft metal elastic characteristic can generate moderate elastic force after the electric needle is inserted, and the side wall of the electric needle at two sides of the positioning plate is in close contact with the first elastic strip and the second elastic strip respectively. It can adapt to electric needles of different diameters, and even if the size of the electric needle is slightly different, uniform contact pressure can still be provided to prevent the electric needle from loosening or falling off.
[0024] 4) The electric brush structure applied to high-pressure discharge leak detection of medicine packaging according to 1), wherein:
[0025] The fastening mechanism comprises a plurality of bolts, the first pressing plate has a first horizontal plate, the first horizontal plate is uniformly provided with a plurality of first threaded holes in the axial direction, the second pressing plate has a second horizontal plate, the second horizontal plate is uniformly provided with a plurality of second threaded holes in the axial direction, the first threaded hole and the second threaded hole correspond one by one, and each bolt passes through the first threaded hole and the second threaded hole corresponding thereto and is threadedly connected with the first threaded hole and the second threaded hole.
[0026] In the utility model, each bolt passes through the corresponding first threaded hole and the second threaded hole, and the first pressing plate and the second pressing plate are tightly fixed together through threaded connection. This connection mode firmly connects the first pressing plate, the second pressing plate and the positioning plate, ensures the stability thereof in the high-pressure detection environment, and avoids displacement or loosening that may occur during detection.
[0027] Meanwhile, the bolt is fixed together with the first threaded hole and the second threaded hole through threaded connection, so that the assembly and disassembly of the structure of the embodiment are more convenient and fast, thereby improving the practicality and operation efficiency.
[0028] Compared with the prior art, the utility model still has following technical effect:
[0029] The utility model discloses a height-adjustable electric brush structure for high-voltage discharge leak detection of medicine packaging, which comprises a positioning plate, an electric needle and a through slot. BRIEF DESCRIPTION OF DRAWINGS
[0030] Figure 1 It is a structure schematic diagram of the electric brush structure for high-voltage discharge leak detection of medicine packaging applied by the utility model.
[0031] Figure 2 It is a schematic diagram of the first pressing plate in the electric brush structure for high-voltage discharge leak detection of medicine packaging applied by the utility model.
[0032] Figure 3 It is a schematic diagram of the positioning plate in the electric brush structure for high-voltage discharge leak detection of medicine packaging applied by the utility model. DETAILED DESCRIPTION
[0033] The following is further explained in detail through specific embodiments:
[0034] The reference signs in the drawings of the specification include: positioning plate 1, electric needle 2, through slot 3, first pressing plate 4, second pressing plate 5, first elastic strip 6, second elastic strip 7, first strip-shaped slot 8, first threaded hole 9.
[0035] Embodiment, see Figure 1 , Figure 2 and Figure 3As shown, the brush structure applied to high-voltage discharge leak detection of medicine packaging in the embodiment comprises a positioning plate 1 and a plurality of electric needles 2. A plurality of through grooves 3 for inserting the electric needles 2 are formed on the upper surface of the positioning plate 1 along the axial direction of the positioning plate 1. The axis of the through grooves 3 is perpendicular to the axis of the positioning plate 1. A plurality of slots are formed on the two sides of the positioning plate 1 along the axial direction of the positioning plate 1. The slots correspond to the through grooves 3 and are in communication with the through grooves 3. The side wall of the electric needle 2 is higher than the slot. A first pressing plate 4 and a second pressing plate 5 are arranged on the two sides of the positioning plate 1, respectively. The first pressing plate 4 and the second pressing plate 5 are attached to the two sides of the positioning plate 1, respectively. The first pressing plate 4 and the second pressing plate 5 are provided with fastening mechanisms at the bottom.
[0036] In the embodiment, the high-voltage discharge method is used to detect the sealing performance of medicine packaging. A high-voltage discharge leak detector with a model number of SPAX-HV is used. In the detection process, the utility model is installed in the high-voltage discharge detector to replace the original brush structure. The high-voltage power supply transmits high voltage to the brush through a high-voltage cable. The positioning plate 1, the first pressing plate 4, the second pressing plate 5, and the electric needle 2 of the brush are all conductive bodies. The high voltage is transmitted to the electric needle 2 in sequence. The sharp design of the tip of the electric needle 2 makes the electric field highly concentrated, forming a very strong local electric field, thereby realizing corona discharge. By detecting the change of the discharge current, the sealing performance of the medicine packaging can be judged.
[0037] A plurality of through grooves 3 are formed on the upper surface of the positioning plate 1. The through grooves 3 are used to insert the electric needles 2. The electric needles 2 can move up and down in the through grooves 3 along the axial direction of the through grooves 3. The operator can adjust the height of the electric needles 2 extending out of the positioning plate 1 according to the shape and size of the medicine packaging, thereby ensuring the stable transmission of the current and the detection accuracy. Secondly, according to the specific size and shape of the medicine packaging, the operator can flexibly select the number and distribution position of the electric needles 2 inserted into the through grooves 3, thereby better adapting to the needs of different packaging.
[0038] For medicine packaging with small size, the through grooves 3 and the electric needles 2 on a single positioning plate 1 can meet the fixing and detection requirements. If the size of the medicine packaging is large, the electric needles 2 on a single positioning plate 1 cannot completely cover the medicine packaging. In this case, two or more positioning plates 1 can be spliced together through a plurality of first pressing plates 4 and second pressing plates 5. The combined positioning plate 1 provides more through grooves 3 and can install more electric needles 2, thereby adapting to medicine packaging with large size.
[0039] Because the height and number of the electric needles 2 are adjustable, the operator does not need to replace the brush for different sizes of medicine packaging, thereby simplifying the operation process and reducing the operation complexity and detection cost. At the same time, by flexibly adjusting the height, number, and distribution of the electric needles 2 and combining multiple positioning plates 1, various sizes and shapes of medicine packaging can be adapted, thereby ensuring the stable transmission of the current and the detection accuracy.
[0040] The first pressing plate 4 and the second pressing plate 5 are arranged on both sides of the positioning plate 1 respectively, and are used for clamping and fixing the positioning plate 1. The positioning plate 1 is fixed firmly through the fastening mechanism at the bottom of the first pressing plate 4 and the second pressing plate 5, so that displacement of the positioning plate 1 in the detection process is prevented, and the accuracy of detection is improved.
[0041] Since the side wall of the electric needle 2 is higher than the notch, when the first pressing plate 4 and the second pressing plate 5 are attached to both sides of the positioning plate 1, the first pressing plate 4 and the second pressing plate 5 can directly contact the side wall of the electric needle 2. Through the fastening mechanism at the bottom of the first pressing plate 4 and the second pressing plate 5, the first pressing plate 4 and the second pressing plate 5 can be connected with the positioning plate 1 respectively, so that the electric needle 2 is fixed in the through groove 3, displacement of the electric needle 2 in the detection process is avoided, and the stability and reliability of the electric brush 2 in the high-voltage detection environment are improved.
[0042] Two first elastic strips 6 and two second elastic strips 7 are arranged on both sides of the positioning plate along the radial direction of the positioning plate respectively, the first pressing plate 4 and the second pressing plate 5 are arranged in a T shape, the first pressing plate 4 has a first vertical plate, two first slits 8 are arranged on the side of the first vertical plate facing the positioning plate 1, the first slits 8 correspond to the first elastic strips 6 one by one, and the second pressing plate 5 has a second vertical plate, two second slits are arranged on the side of the second vertical plate facing the positioning plate 1, and the second slits correspond to the second elastic strips 7 one by one.
[0043] In the embodiment, the first pressing plate 4 and the second pressing plate 5 are arranged in a T shape, and the first vertical plate and the second vertical plate can be closely attached to the positioning plate 1 respectively. A plurality of first slits 8 are arranged on the side of the first vertical plate facing the positioning plate 1, the axis of the first slits 8 is parallel to the axis of the first vertical plate, the first elastic strips 6 can be embedded in the first slits 8, a plurality of second slits are arranged on the side of the second vertical plate facing the positioning plate 1, the axis of the second slits is parallel to the axis of the second vertical plate, and the second elastic strips 7 can be embedded in the second slits, so that the first pressing plate 4 and the second pressing plate 5 are fixed firmly with the positioning plate 1 respectively, and it is ensured that the positioning plate 1 will not displace before being fixed through the fastening mechanism at the bottom, so that the accuracy of detection is improved.
[0044] When the first pressing plate 4 and the second pressing plate 5 are fixed through the fastening mechanism at the bottom, the first elastic strips 6 are embedded in the first slits 8, and the second elastic strips 7 are embedded in the second slits, so that displacement of the positioning plate 1 in the detection process is prevented, and the stability of the embodiment in the high-voltage detection environment is ensured, and the accuracy of detection is affected by displacement of the positioning plate.
[0045] In addition, the first elastic strip 6 and the second elastic strip 7 are respectively located on both sides of the positioning plate 1, and when the electric needle 2 is inserted into the through slot 3, the side wall of the electric needle 2 on both sides of the positioning plate 1 will be in close contact with the first elastic strip 6 and the second elastic strip 7 respectively. The first elastic strip 6 and the second elastic strip 7 exert continuous lateral pressure on the electric needle 2 in contact with them, so that the electric needle 2 is kept stable in the through slot 3, avoiding loosening or falling off due to external force or vibration.
[0046] The first elastic strip 6 and the second elastic strip 7 are made of soft metal material. In this embodiment, the first elastic strip 6 and the second elastic strip 7 are made of soft metal material, which has good elasticity and plasticity. The soft metal material can restore its original shape after being extruded and deformed, and when the first elastic strip 6 is embedded in the first strip-shaped groove 8, the outer side wall of the first elastic strip 6 can tightly fit the inner wall of the first strip-shaped groove 8, ensuring that the entire first strip-shaped groove 8 is completely filled.
[0047] Through such close fitting, the first elastic strip 6 and the first strip-shaped groove 8 are firmly fixed together, making the connection between the first vertical plate and the positioning plate 1 more stable. Similarly, the side wall of the second elastic strip 7 can tightly fit the inner wall of the second strip-shaped groove, ensuring that the entire second strip-shaped groove is completely filled, and the second elastic strip 7 and the second strip-shaped groove are firmly fixed, making the connection between the second vertical plate and the positioning plate 1 more stable.
[0048] In addition, the soft metal elastic property can generate a moderate elastic force after the electric needle 2 is inserted, ensuring that the side wall of the electric needle 2 on both sides of the positioning plate is in close contact with the first elastic strip 6 and the second elastic strip 7 respectively. It can adapt to electric needles 2 of different diameters, and even if the size of the electric needle 2 is slightly different, it can still provide uniform contact pressure to prevent the electric needle 2 from loosening or falling off.
[0049] The fastening mechanism includes 7 bolts, the first pressing plate 4 has a first horizontal plate, and the first horizontal plate is uniformly distributed with 7 first threaded holes 9 along its axial direction. The second pressing plate 5 has a second horizontal plate, and the second horizontal plate is uniformly distributed with 7 second threaded holes along its axial direction. The first threaded hole 9 and the second threaded hole correspond to each other, and each bolt passes through the first threaded hole 9 and the second threaded hole corresponding to it and is threadedly connected with the first threaded hole 9 and the second threaded hole.
[0050] In this embodiment, each bolt passes through the corresponding first threaded hole 9 and second threaded hole, and threadedly connects the first pressing plate 4 and the second pressing plate 5 to tightly fix them together. This connection mode firmly connects the first pressing plate 4, the second pressing plate 5 and the positioning plate 1, ensuring the stability of them in a high-pressure detection environment, avoiding displacement or loosening that may occur during detection.
[0051] Meanwhile, the bolt is fixed together with the first threaded hole 8 and the second threaded hole through threaded connection, so that the assembly and disassembly of the structure of the embodiment are more convenient and fast, thereby improving the practicality and operation efficiency.
[0052] By adjusting the position of the electric needle 2 in the through slot 3, the height of the electric needle 2 extending out of the positioning plate 1 can be changed. Compared with the prior art, the embodiment can flexibly adapt to different sizes and shapes of the medicine packaging surface, thereby ensuring stable transmission of electric current and detection accuracy. Since the extension height of the electric needle 2 is adjustable, the operator does not need to replace the electric brush for different sizes of medicine packaging, thereby simplifying the operation process and reducing the operation complexity and detection cost. In addition, the first pressing plate 4 and the second pressing plate 5 are tightly fixed together through threaded connection, thereby firmly fixing the positioning plate 1 and ensuring its stability in the high-voltage detection environment, avoiding displacement or loosening that may occur during the detection process.
[0053] The above is only an embodiment of the utility model, and the specific technical solutions and / or common knowledge of the scheme are not described in detail. It should be noted that for those skilled in the art, without departing from the technical solutions of the utility model, a number of modifications and improvements can be made, which should also be considered as the protection scope of the utility model, and these will not affect the effect and practicality of the utility model. The protection scope of the present application should be subject to the content of its claims, and the specific implementation mode and the like in the specification can be used to explain the content of the claims.
Claims
1. A brush structure used for high-voltage discharge leak detection in pharmaceutical packaging, characterized in that, The device includes a positioning plate and several electric needles. Several through slots for inserting the electric needles are respectively formed on both sides of the upper surface of the positioning plate along its axial direction. The axis of the through slots is perpendicular to the axis of the positioning plate. Several slots are respectively formed on both sides of the positioning plate along its axial direction. The slots correspond one-to-one with and are connected to the through slots. The sidewalls of the electric needles are higher than the slots. A first pressure plate and a second pressure plate are respectively provided on both sides of the positioning plate. The first pressure plate and the second pressure plate are respectively attached to the sides of the positioning plate. A fastening mechanism is provided at the bottom of the first pressure plate and the second pressure plate.
2. The brush structure for high-voltage discharge leak detection in pharmaceutical packaging according to claim 1, characterized in that: The positioning plate has several first elastic strips and second elastic strips arranged radially on both sides. The first pressure plate and the second pressure plate are arranged in a T-shape. The first pressure plate has a first vertical plate and several first strip grooves on the side of the first vertical plate facing the positioning plate. The first strip grooves correspond one-to-one with the first elastic strips. The second pressure plate has a second vertical plate and several second strip grooves on the side of the second vertical plate facing the positioning plate. The second strip grooves correspond one-to-one with the second elastic strips.
3. The brush structure for high-voltage discharge leak detection in pharmaceutical packaging according to claim 2, characterized in that: The first and second elastic strips are made of soft metal material.
4. The brush structure for high-voltage discharge leak detection in pharmaceutical packaging according to claim 1, characterized in that: The fastening mechanism includes several bolts. The first pressure plate has a first horizontal plate with several first threaded holes evenly distributed along its axial direction. The second pressure plate has a second horizontal plate with several second threaded holes evenly distributed along its axial direction. The first threaded holes and the second threaded holes correspond one-to-one. Each bolt passes through its corresponding first threaded hole and second threaded hole and is threadedly connected to the first threaded hole and the second threaded hole.