CN111579367A - Fastening screw production detection equipment and detection method thereof - Google Patents
Fastening screw production detection equipment and detection method thereof Download PDFInfo
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- CN111579367A CN111579367A CN202010455507.1A CN202010455507A CN111579367A CN 111579367 A CN111579367 A CN 111579367A CN 202010455507 A CN202010455507 A CN 202010455507A CN 111579367 A CN111579367 A CN 111579367A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0003—Steady
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0075—Strain-stress relations or elastic constants
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0682—Spatial dimension, e.g. length, area, angle
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Automatic Assembly (AREA)
Abstract
The invention relates to a fastening screw production detection device and a detection method thereof. The device can solve the problems that the force application position of the screw cannot be adjusted usually and the screw with any size cannot be used when the conventional device detects and processes the fastening screw, so that the adaptation effect of the fastening screw is poor, the detection efficiency is low, and the detection efficiency of the screw is low because the conventional device manually places the fastening screw to be detected at a specified position usually and cannot automatically feed materials when detecting and processing the fastening screw.
Description
Technical Field
The invention relates to the field of fastening screw production, detection and processing, in particular to fastening screw production detection equipment and a detection method thereof.
Background
The fastening screw is a common component in the field of mechanical manufacturing, such a component needs to be applied to many devices and equipment, whether the screw is qualified or not is detected through manual work by adopting a standard gauge at first, the efficiency of such an inspection mode is low, the labor intensity is high, the production cost is high, the key is also influenced by people, and the product qualification rate cannot be guaranteed.
At present, the existing fastening screw has the following defects in the production and processing process: 1. when the existing equipment detects and processes the fastening screw, the force application position of the screw cannot be adjusted generally, and further the screw with any size cannot be used, so that the adaptive effect of the fastening screw is poor, and the detection efficiency is low; 2. when the existing equipment detects and processes the fastening screw, the fastening screw to be detected is usually placed at a designated position manually, and the feeding cannot be automated, so that the detection efficiency of the screw is low.
Disclosure of Invention
Technical problem to be solved
The device can solve the problems that the force application position of the screw cannot be adjusted usually and the screw with any size cannot be used when the conventional device detects and processes the fastening screw, so that the adaptation effect of the fastening screw is poor, the detection efficiency is low, and the detection efficiency of the screw is low because the conventional device manually places the fastening screw to be detected at a specified position usually and cannot automatically feed materials when detecting and processing the fastening screw.
(II) technical scheme
In order to achieve the purpose, the invention adopts the following technical scheme that the fastening screw production detection equipment comprises a bottom plate, a support frame, a detection device and a feeding device, wherein the support frame is installed at the upper end of the bottom plate, the section of the support frame is of a U-shaped structure, the detection device is installed at the upper end inside the support frame, the feeding device is installed at the lower end inside the support frame, and the lower end of the feeding device is installed on the bottom plate.
Detection device including driving actuating cylinder, carriage, expanding spring and adjustment mechanism, the support frame on the symmetry be provided with the spout, be connected with the carriage through sliding fit's mode in the spout, install expanding spring between carriage and the spout, the symmetry is installed between carriage upper end and the support frame and is driven actuating cylinder, the inside draw-in groove that is provided with of carriage, install adjustment mechanism in the draw-in groove, concrete during operation, it drives actuating cylinder and drives the carriage downstream and exert pressure to the fastening screw both ends of loading attachment upper end, and then can detect fastening screw according to fastening screw's deformation volume, adjustment mechanism can adjust the position of exerting pressure, and then can adjust not unidimensional fastening screw.
The feeding device comprises a bearing bracket, a feeding mechanism, a material placing frame, a rotating mechanism and a positioning mechanism, wherein the bearing bracket is arranged in the middle of the upper end of the bottom plate, the rotating mechanism is arranged in the middle, the outer side of the rotating mechanism is connected with the supporting frame, the feeding mechanism is symmetrically arranged on the rotating mechanism, the material placing frame is arranged on the rear side of the bearing bracket, the material placing frame is arranged on the bottom plate, an arc-shaped through groove is formed in the material placing frame, fastening screws are filled in the arc-shaped through groove, the positioning mechanism is arranged in the middle of the bearing bracket and is in clamping fit with the feeding mechanism, when the driving cylinder drives the sliding frame to move upwards, a rack plate on the outer side of the sliding frame drives the rotating shaft to rotate in a gear meshing mode, the rotating shaft can further drive the feeding mechanism to perform intermittent motion, and the feeding mechanism can place the, and further, the continuity detection processing of the fastening screw can be realized.
Slewing mechanism include the axis of rotation, regulation gear and rack plate, support bracket middle part install the axis of rotation through the bearing, the axis of rotation outside is connected with the support frame through the bearing, the regulation gear is installed to the axis of rotation left end, regulation gear engagement has the rack plate, the rack plate is installed in the carriage outside, concrete during operation, when driving actuating cylinder and driving the carriage upward movement, the carriage drives the rack plate motion, when the rack plate downstream, the rack plate not with regulation gear engagement, when the rack plate upward movement, the rack plate drives the axis of rotation with regulation gear engagement and rotates, the axis of rotation and then can drive feed mechanism intermittent type formula and rotate.
As a preferred technical scheme of the invention, the adjusting mechanism comprises an adjusting screw, a slider and a pressing block, the adjusting screw is mounted in the clamping groove through a bearing, two reversely-arranged threads are symmetrically arranged on the adjusting screw, the slider is connected to each thread in a thread fit manner, the pressing block is mounted at the lower end of the slider and is connected with the sliding frame in a sliding fit manner, when the adjusting mechanism works, the adjusting screw is manually rotated, the adjusting screw drives the two sliders to move in the same direction or in the opposite direction in a thread fit manner, and the slider can drive the pressing block to adjust the position, so that the fastening screws with different sizes can be adjusted.
As a preferred technical scheme, the feeding mechanism comprises a rotating ring, a connecting frame and a clamping frame, the rotating ring is mounted on the rotating mechanism, the connecting frame is uniformly mounted on the outer side of the rotating ring, the clamping frame is mounted on the outer side of the connecting frame and is of a semicircular structure, rubber convex patterns are arranged in the clamping frame, when the feeding mechanism works, when the rotating mechanism rotates, the rotating mechanism drives the clamping frame to rotate through the connecting frame, the clamping frame can convey fastening screws one by one, and the fastening screws can be conveniently detected one by one.
As a preferred technical scheme of the invention, the rack plate comprises a connecting plate, a clamping seat and clamping teeth, the connecting plate is installed on the sliding frame, the clamping seat is evenly installed on the front end face of the connecting plate, the clamping teeth are installed in the clamping seat through pin shafts and are meshed with the adjusting gear, during specific work, when the connecting plate moves downwards, the clamping teeth on the connecting plate turn upwards through the pin shafts, when the connecting plate moves upwards, the clamping teeth are meshed with the adjusting gear, and the adjusting gear can further drive the rotating shaft to rotate.
As a preferred technical scheme of the invention, the positioning mechanism comprises a sliding block, a positioning frame and a connecting spring, the middle part of the supporting bracket is provided with a sliding groove, the sliding block is connected in the sliding groove in a sliding fit manner, the connecting spring is installed between the sliding blocks, the positioning frame is installed on the outer side of the sliding block, the feeding mechanism is provided with a positioning groove matched with the positioning frame, when the feeding mechanism rotates 90 degrees in specific work, the sliding block drives the positioning frame to move outwards through the connecting spring, and the positioning frame can clamp the positioning groove in the feeding mechanism to prevent the feeding mechanism from deviating.
As a preferred technical scheme of the invention, the upper end of the bearing bracket is provided with an arc-shaped groove, a bearing block is arranged in the arc-shaped groove through a pin shaft, the bearing block is of an arc-shaped structure, and a return spring is arranged between the lower end of the bearing block and the bearing bracket.
As a preferred technical scheme of the invention, the pressing block is of an arc-shaped structure, and the inner concave surface of the pressing block is provided with the wear-resistant rubber pad.
In addition, the invention also provides a detection method of the fastening screw production detection equipment, which comprises the following steps:
s1, manually and uniformly filling the fastening screw rods to be detected in the material placing frame;
s2, driving the cylinder to drive the sliding frame to move downwards to apply pressure to two ends of a fastening screw at the upper end of the support bracket, so that the fastening screw can be detected according to the deformation of the fastening screw, and the adjusting mechanism can adjust the position of the applied pressure, so that the fastening screws with different sizes can be adjusted;
s3, after the fastening screw rod in the step S2 is detected, the driving cylinder drives the sliding frame to move upwards, the rack plate on the outer side of the sliding frame drives the rotating shaft to rotate in a gear meshing mode, the rotating shaft can further drive the feeding mechanism to move intermittently, the feeding mechanism can place the fastening screw rod inside the material placing frame on the upper end of the bearing bracket one by one, and then the continuous detection and processing of the fastening screw rod can be realized.
(III) advantageous effects
1. According to the fastening screw production detection equipment and the detection method thereof, the detection device can effectively detect and process the screw, the detection effect is good, the efficiency is high, the force application position of the screw can be adjusted, and the fastening screw production detection equipment and the detection method thereof can be suitable for screws with different sizes and are beneficial to use;
2. according to the fastening screw production detection equipment and the detection method thereof, the feeding mechanism adopts an intermittent feeding mode, so that the fastening screws can be effectively fed one by one, the manual operation intensity is reduced, and the continuous detection processing of the fastening screws is facilitated.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic cross-sectional view of the present invention;
FIG. 2 is a schematic cross-sectional view of the supporting frame and the detecting device of the present invention;
FIG. 3 is a schematic structural view between the base plate and the feeding device according to the present invention;
FIG. 4 is a schematic cross-sectional view of the loading device of the present invention;
fig. 5 is a schematic view of the structure of the rack plate of the present invention.
Detailed Description
The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.
As shown in fig. 1 to 5, a fastening screw production detection device comprises a bottom plate 1, a support frame 2, a detection device 3 and a feeding device 4, wherein the support frame 2 is installed at the upper end of the bottom plate 1, the cross section of the support frame 2 is of a U-shaped structure, the detection device 3 is installed at the upper end inside the support frame 2, the feeding device 4 is installed at the lower end inside the support frame 2, and the lower end of the feeding device 4 is installed on the bottom plate 1.
The adjusting mechanism 34 comprises an adjusting screw 341, a slider 342 and a pressing block 343, the adjusting screw 341 is mounted in the clamping groove through a bearing, two reversely-opened threads are symmetrically arranged on the adjusting screw 341, the slider 342 is connected to each thread in a thread fit manner, the pressing block 343 is mounted at the lower end of the slider 342 and is connected with the sliding frame 32 in a sliding fit manner, the pressing block 343 is of an arc-shaped structure, a wear-resistant rubber pad is arranged on the inner concave surface of the pressing block 343, during specific work, the adjusting screw 341 is manually rotated, the adjusting screw 341 drives the two sliders 342 to move in the same direction or in the reverse direction in a thread fit manner, and the slider 342 can drive the pressing block 343 to adjust the position of the pressing block 343, so that the fastening screws with different sizes can be adjusted.
The feeding device 4 comprises a supporting bracket 41, a feeding mechanism 42, a material discharging frame 43, a rotating mechanism 44 and a positioning mechanism 45, the supporting bracket 41 is installed in the middle of the upper end of the bottom plate 1, the rotating mechanism 44 is installed in the middle, the outer side of the rotating mechanism 44 is connected with the supporting frame 2, the feeding mechanism 42 is symmetrically installed on the rotating mechanism 44, the material discharging frame 43 is arranged on the rear side of the supporting bracket 41, the material discharging frame 43 is installed on the bottom plate 1, an arc-shaped through groove is formed in the material discharging frame 43, a fastening screw rod is filled in the arc-shaped through groove, the positioning mechanism 45 is installed in the middle of the supporting bracket 41, the positioning mechanism 45 is in clamping fit with the feeding mechanism 42, when the driving cylinder 31 drives the sliding frame 32 to move upwards, the rack plate 443 on the outer side of the sliding frame 32 drives the rotating shaft 441 to rotate in a gear meshing manner, the feeding mechanism 42 can place the fastening screws inside the material placing frame 43 on the upper end of the supporting frame 41 one by one, and then the continuity detection processing of the fastening screws can be realized.
The rotating mechanism 44 includes a rotating shaft 441, an adjusting gear 442 and a rack plate 443, the rotating shaft 441 is mounted in the middle of the support bracket 41 through a bearing, the outer side of the rotating shaft 441 is connected to the support frame 2 through a bearing, the adjusting gear 442 is mounted at the left end of the rotating shaft 441, the adjusting gear 442 is meshed with the rack plate 443, the rack plate 443 is mounted on the outer side of the sliding frame 32, during specific operation, when the driving cylinder 31 drives the sliding frame 32 to move upwards, the sliding frame 32 drives the rack plate 443 to move, when the rack plate 443 moves downwards, the rack plate 443 is not meshed with the adjusting gear 442, when the rack plate 443 moves upwards, the rack plate 443 is meshed with the adjusting gear 442 to drive the rotating shaft 441 to rotate, and the rotating shaft 441 can further drive the feeding mechanism 42.
The rack plate 443 includes a connecting plate 4431, a clamping seat 4432 and a latch 4433, the connecting plate 4431 is mounted on the sliding rack 32, the clamping seat 4432 is uniformly mounted on the front end face of the connecting plate 4431, the latch 4433 is mounted in the clamping seat 4432 through a pin, the latch 4433 is engaged with the adjusting gear 442, when the rack plate 4431 moves downward, the latch 4433 on the connecting plate 4431 turns upward through the pin, when the connecting plate 4431 moves upward, the latch 4433 is engaged with the adjusting gear 442, and the adjusting gear 442 further drives the rotating shaft 441 to rotate.
In addition, the invention also provides a detection method of the fastening screw production detection equipment, which comprises the following steps:
s1, manually and uniformly filling the fastening screws to be detected in the material placing frame 43;
s2, the driving cylinder 31 drives the sliding frame 32 to move downwards to apply pressure to two ends of a fastening screw at the upper end of the supporting bracket 41, so that the fastening screw can be detected according to the deformation quantity of the fastening screw, and the adjusting mechanism 34 can adjust the position of the applied pressure, so that fastening screws with different sizes can be adjusted;
s3, after the fastening screws in step S2 are detected, the driving cylinder 31 drives the sliding rack 32 to move upward, the rack plate 443 outside the sliding rack 32 drives the rotating shaft 441 to rotate in a gear engagement manner, the rotating shaft 441 can further drive the feeding mechanism 42 to perform intermittent movement, the feeding mechanism 42 can place the fastening screws inside the material placing rack 43 on the upper end of the supporting bracket 41 one by one, and then the continuous detection processing of the fastening screws can be realized.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a fastening screw production check out test set, includes bottom plate (1), support frame (2), detection device (3) and loading attachment (4), its characterized in that: the upper end of the bottom plate (1) is provided with a support frame (2), the section of the support frame (2) is of a U-shaped structure, the upper end inside the support frame (2) is provided with a detection device (3), the lower end inside the support frame (2) is provided with a feeding device (4), and the lower end of the feeding device (4) is arranged on the bottom plate (1); wherein:
the detection device (3) comprises a driving cylinder (31), a sliding frame (32), an expansion spring (33) and an adjusting mechanism (34), sliding grooves are symmetrically formed in the support frame (2), the sliding frame (32) is connected in the sliding grooves in a sliding fit mode, the expansion spring (33) is installed between the sliding frame (32) and the sliding grooves, the driving cylinder (31) is symmetrically installed between the upper end of the sliding frame (32) and the support frame (2), a clamping groove is formed in the sliding frame (32), and the adjusting mechanism (34) is installed in the clamping groove;
the feeding device (4) comprises a bearing bracket (41), a feeding mechanism (42), a discharging frame (43), a rotating mechanism (44) and a positioning mechanism (45), wherein the bearing bracket (41) is installed in the middle of the upper end of the base plate (1), the rotating mechanism (44) is installed in the middle of the upper end of the base plate, the outer side of the rotating mechanism (44) is connected with the support frame (2), the feeding mechanism (42) is symmetrically installed on the rotating mechanism (44), the discharging frame (43) is arranged on the rear side of the bearing bracket (41), the discharging frame (43) is installed on the base plate (1), an arc-shaped through groove is formed in the discharging frame (43), a fastening screw rod is filled in the arc-shaped through groove, the positioning mechanism (45) is installed in the middle of the bearing bracket (41), and the positioning mechanism (45) is;
the rotating mechanism (44) comprises a rotating shaft (441), an adjusting gear (442) and a rack plate (443), the rotating shaft (441) is mounted in the middle of the supporting bracket (41) through a bearing, the outer side of the rotating shaft (441) is connected with the supporting frame (2) through a bearing, the adjusting gear (442) is mounted at the left end of the rotating shaft (441), the adjusting gear (442) is meshed with the rack plate (443), and the rack plate (443) is mounted on the outer side of the sliding frame (32).
2. The fastening screw production inspection apparatus according to claim 1, wherein: the adjusting mechanism (34) comprises an adjusting screw (341), a sliding block (342) and a pressing block (343), the adjusting screw (341) is installed in the clamping groove through a bearing, two reverse threads are symmetrically arranged on the adjusting screw (341), the sliding block (342) is connected to each thread in a thread fit mode, the pressing block (343) is installed at the lower end of the sliding block (342), and the pressing block (343) is connected with the sliding frame (32) in a sliding fit mode.
3. The fastening screw production inspection apparatus according to claim 1, wherein: feed mechanism (42) include swivel becket (421), link (422) and joint frame (423), swivel becket (421) install on slewing mechanism (44), link (422) are evenly installed in the swivel becket (421) outside, joint frame (423) are installed in the link (422) outside, joint frame (423) are semicircular in shape, are provided with the rubber burr in joint frame (423).
4. The fastening screw production inspection apparatus according to claim 1, wherein: the rack plate (443) comprises a connecting plate (4431), a clamping seat (4432) and clamping teeth (4433), the connecting plate (4431) is installed on the sliding frame (32), the clamping seat (4432) is evenly installed on the front end face of the connecting plate (4431), the clamping teeth (4433) are installed in the clamping seat (4432) through pin shafts, and the clamping teeth (4433) are meshed with the adjusting gear (442).
5. The fastening screw production inspection apparatus according to claim 1, wherein: positioning mechanism (45) include sliding block (451), locating rack (452) and coupling spring (453), support bracket (41) middle part be equipped with the sliding tray, be connected with sliding block (451) through sliding fit's mode in the sliding tray, install coupling spring (453) between sliding block (451), locating rack (452) are installed to the sliding block (451) outside, be provided with on feed mechanism (42) with locating rack (452) complex constant head tank.
6. The fastening screw production inspection apparatus according to claim 1, wherein: the bearing bracket is characterized in that an arc-shaped groove is formed in the upper end of the bearing bracket (41), a bearing block (411) is installed in the arc-shaped groove through a pin shaft, the bearing block (411) is of an arc-shaped structure, and a return spring is installed between the lower end of the bearing block (411) and the bearing bracket (41).
7. The fastening screw production inspection apparatus according to claim 2, wherein: the pressing block (343) is of an arc-shaped structure, and a wear-resistant rubber pad is arranged on the concave surface of the pressing block (343).
8. The fastening screw production inspection apparatus according to claim 1, wherein: the detection method of the fastening screw production detection equipment comprises the following steps:
s1, manually and uniformly filling the fastening screw rods to be detected in the material placing frame (43);
s2, the driving cylinder (31) drives the sliding frame (32) to move downwards to apply pressure to two ends of a fastening screw rod at the upper end of the supporting bracket (41), so that the fastening screw rod can be detected according to the deformation of the fastening screw rod, and the adjusting mechanism (34) can adjust the position of the applied pressure, so that the fastening screw rods with different sizes can be adjusted;
s3, after the fastening screws in the step S2 are detected, the driving cylinder (31) drives the sliding frame (32) to move upwards, the rack plate (443) on the outer side of the sliding frame (32) drives the rotating shaft (441) to rotate in a gear meshing mode, the rotating shaft (441) further can drive the feeding mechanism (42) to move intermittently, the feeding mechanism (42) can place the fastening screws in the material placing frame (43) on the upper end of the bearing bracket (41) one by one, and continuous detection and processing of the fastening screws can be achieved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010455507.1A CN111579367A (en) | 2020-05-26 | 2020-05-26 | Fastening screw production detection equipment and detection method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010455507.1A CN111579367A (en) | 2020-05-26 | 2020-05-26 | Fastening screw production detection equipment and detection method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111579367A true CN111579367A (en) | 2020-08-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010455507.1A Withdrawn CN111579367A (en) | 2020-05-26 | 2020-05-26 | Fastening screw production detection equipment and detection method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN111579367A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117433909A (en) * | 2023-12-21 | 2024-01-23 | 河北厚润金属制品有限公司 | Intensity detection device is used in production of to drawing screw rod |
-
2020
- 2020-05-26 CN CN202010455507.1A patent/CN111579367A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117433909A (en) * | 2023-12-21 | 2024-01-23 | 河北厚润金属制品有限公司 | Intensity detection device is used in production of to drawing screw rod |
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Application publication date: 20200825 |