Aluminum alloy casting rod bending degree detection device

By using a synchronous lifting structure and distance sensor in the bending degree detection device of the aluminum alloy casting rod, and automatically separating and sorting of unqualified aluminum alloy casting rods by pushing the components, the time-consuming and labor-intensive manual adjustment in the prior art is solved, and the detection efficiency and accuracy are improved.

CN222659321UActive Publication Date: 2025-03-25SUZHOU MINGHENG METAL TECH CO LTD
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Patent Information

Application Number
CN202420975412.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-05-08
Publication Date
2025-03-25
Estimated Expiration
2034-05-08

AI Technical Summary

Technical Problem

The existing aluminum alloy cast rod bending detection fixtures require manual spacing adjustment, which is time-consuming and labor-intensive, and the operation depends on labor, with low adjustment and automation.

Method used

A bending detection device for aluminum alloy casting rods is designed, and the movable steel plate is driven by a synchronous lifting structure to drive the movement of the movable steel plate. The distance sensor is automatically adjusted to the spacing between the bottom steel plate and the movable steel plate, which is suitable for different rod diameters and their allowable deviations, and the automatic separation and sorting of unqualified aluminum alloy casting rods is achieved by pushing the components.

Benefits of technology

It realizes automatic rod diameter spacing adjustment, saves time and effort, and has the automatic separation and sorting functions of unqualified aluminum alloy casting rods, reducing manual operation and improving detection efficiency and accuracy.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides an aluminum alloy casting rod curvature detection device. The device comprises a bottom steel plate, a movable assembly, a side plate and a pushing assembly. The movable assembly comprises a synchronous lifting structure, a movable steel plate and a distance sensor; the synchronous lifting structure is movably installed at the top of the bottom steel plate, a threaded section of the synchronous lifting structure is in threaded connection with a movable steel plate, the movable steel plate and the bottom steel plate are in threaded fit to drive the movable steel plate to move longitudinally, and the movable steel plate is located over the bottom steel plate and parallel to the bottom steel plate; the distance sensor is arranged at the bottom of the movable steel plate; the pushing assembly comprises a first telescopic air cylinder, a supporting plate and a second telescopic air cylinder. The supporting plate is arranged in a bottom groove of the movable steel plate; the telescopic cylinder I is mounted at the top of the movable steel plate; the second telescopic air cylinder is horizontally embedded in the supporting plate, and the movable end transversely penetrates through the supporting plate and is used for making contact with and pushing away from the aluminum alloy casting rod. The height of the movable steel plate can be automatically adjusted so as to be suitable for different rod diameters and allowable deviation of the rod diameters, and time and labor are saved.
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Description

Technical Field

[0001] The utility model relates to the technical field of aluminum alloy cast bar detection, in particular to a device for detecting the curvature of an aluminum alloy cast bar. Background Art

[0002] The existing jig for testing the curvature of aluminum alloy cast bars is relatively simple. It is formed by two flat steel plates, one above the other, to form a channel. The distance between the two flat steel plates is adjusted to accommodate different rod diameters. When changing the rod diameter specification or allowing deviation, it is necessary to manually adjust the distance between the two flat steel plates of the jig, that is, to place the block of the required rod diameter specification within the distance between the two flat steel plates, and then use a vernier caliper to verify. This manual adjustment method is time-consuming and labor-intensive. In addition, aluminum alloy cast bars that meet the standards can pass through the jig, but those that do not meet the standards will be intercepted by the jig and need to be manually moved away for the next aluminum alloy cast bar to be tested. The entire test jig operation relies heavily on manual labor, and has low adjustability and automation. Utility Model Content

[0003] Based on this, it is necessary to provide an aluminum alloy cast rod curvature detection device to address the problem that the existing detection fixture uses manual adjustment of the spacing, which is time-consuming and labor-intensive.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A device for detecting the curvature of an aluminum alloy cast rod comprises a bottom steel plate, a movable component, a side plate and a pushing component.

[0006] The long side of the bottom steel plate is tilted outward from top to bottom to form an inclined surface;

[0007] The movable assembly includes a synchronous lifting structure, a movable steel plate and a distance sensor; the synchronous lifting structure is movably installed on the top of the bottom steel plate, the threaded section of the synchronous lifting structure is threadedly connected with the movable steel plate, and the two threads cooperate to drive the movable steel plate to move longitudinally, the movable steel plate is located directly above the bottom steel plate and the two are arranged in parallel, and a groove is opened at the bottom of the movable steel plate; the distance sensor is arranged at the bottom of the movable steel plate to sense the distance between the movable steel plate and the bottom steel plate;

[0008] The side panels are longitudinally installed on the short sides of the bottom steel plate and are in contact with the side walls of the movable steel plate;

[0009] The pushing assembly includes a telescopic cylinder 1, a support plate and a telescopic cylinder 2; the support plate is placed in the groove of the movable steel plate; the fixed end of the telescopic cylinder 1 is longitudinally installed on the top of the movable steel plate, and the movable end penetrates into the groove of the movable steel plate and is connected to the support plate; the telescopic cylinder 2 is horizontally embedded in the support plate, the fixed end is fixedly connected to the support plate, and the movable end crosses the support plate to contact and push away the aluminum alloy cast rod.

[0010] Furthermore, the synchronous lifting structure includes a screw, a synchronous wheel, a synchronous belt, a forward and reverse motor and a protective shell; there are two screws, which are symmetrically and movably arranged on the top of the bottom steel plate, and the screws serve as threaded sections of the synchronous lifting structure that penetrate the movable steel plate longitudinally and are screwed; the protective shell is fixedly arranged on the top of the two side plates, and the forward and reverse motors are installed on the top of the protective shell. The output shaft of the forward and reverse motors extends into the protective shell and is connected to the top of one of the screws. The top of the screw is located in the protective shell and is fixedly connected to the synchronous wheel. The two synchronous wheels are linked by a synchronous belt.

[0011] Furthermore, the thickness of the two sides of the movable steel plate away from the side plate gradually decreases from the inside to the outside to form an inclined surface, the edge of the inclined surface is flush with the edge of the side plate, and a scale ruler for referencing the height of the movable steel plate is provided on the side of the side plate.

[0012] Furthermore, a sliding protrusion is horizontally extended outward on the side wall where the movable steel plate contacts the side plate, and a sliding groove adapted to the sliding protrusion is opened on the inner wall of the side plate, and the sliding protrusion is located in the sliding groove.

[0013] Furthermore, the groove of the movable steel plate extends horizontally toward the fixed end of the second telescopic cylinder and is connected to the outside, and the fixed end portion of the second telescopic cylinder is located outside the support plate.

[0014] Furthermore, the aluminum alloy cast rod curvature detection device also includes a support seat; the support seat is composed of a first horizontal branch, a first inclined branch, a second horizontal branch, a second inclined branch and a third horizontal branch from high to low, the bottom steel plate is detachably installed on the second horizontal branch of the support seat, and the movable end of the telescopic cylinder faces the first inclined branch; a jacking structure is installed on the first horizontal branch.

[0015] Furthermore, the jacking structure includes a jacking cylinder and a jacking plate; the fixed end of the jacking cylinder is installed at the bottom of the first horizontal branch of the support seat, the jacking cylinder is longitudinally arranged, the movable end is upward and vertically penetrates the first horizontal branch and is connected to the jacking plate, and in the initial state, the top of the jacking plate is flush with the first horizontal branch.

[0016] Furthermore, openings are provided on the symmetrical sides of the first inclined branch, and the openings are adjacent to the side plates. A push cylinder is horizontally installed on the outer side of one of the openings, and the movable end of the push cylinder faces the first inclined branch and is connected to the push plate. In the initial state, the push plate is located in the side opening.

[0017] Furthermore, a marking paint is applied to the bottom horizontal edge of the movable steel plate on one side close to the first inclined branch.

[0018] Furthermore, the telescopic cylinder 1 is staggered with the synchronous belt, and a through hole for the fixed end of the telescopic cylinder 1 to pass through is opened at the bottom of the protective shell.

[0019] Compared with the prior art, the beneficial effects of the utility model include:

[0020] 1. The utility model drives the movable steel plate to move through the synchronous lifting structure to adjust the distance between the bottom steel plate and the movable steel plate. The distance sensor can detect whether the distance between the bottom steel plate and the movable steel plate reaches the required distance, and can automatically adjust to suit different rod diameters and their allowable deviations, saving time and effort;

[0021] 2. The utility model can push the aluminum alloy casting rod away from the gap between the movable steel plate and the bottom steel plate through the pushing component, and then push the aluminum alloy casting rod down the support seat through the pushing cylinder to separate the unqualified and qualified aluminum alloy casting rods. It has a sorting function. The qualified products flow down through the normal channel for palletizing and packaging, and the unqualified products flow to another channel for palletizing, without manual handling;

[0022] 3. The utility model can manually read the distance between the movable steel plate and the bottom steel plate through the cooperation of the scale rulers of the movable steel plate and the side plate for manual inspection; and a marking paint is applied to the bottom edge of the movable steel plate to mark the position where the curvature of the cast rod exceeds the tolerance. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The disclosure of the present invention is described with reference to the accompanying drawings. It should be understood that the drawings are only for illustrative purposes and are not intended to limit the scope of protection of the present invention. In the drawings, the same reference numerals are used to refer to the same components. Among them:

[0024] Figure 1 This is a schematic diagram of the structure of a device for detecting the curvature of an aluminum alloy cast bar introduced in the utility model;

[0025] Figure 2 Based on Figure 1 A cross-sectional view of

[0026] Figure 3 It is a schematic diagram of the connection between the bottom steel plate and the support seat;

[0027] Figure 4 Based on Figure 3 Top view of the .

[0028] Explanations in the figure: 1. Bottom steel plate; 2. Movable component; 21. Synchronous lifting structure; 211. Screw; 212. Synchronous wheel; 213. Synchronous belt; 214. Forward and reverse motor; 215. Protective shell; 22. Movable steel plate; 23. Distance sensor; 3. Support seat; 31. First horizontal branch; 32. First inclined branch; 33. Second horizontal branch; 34. Second inclined branch; 35. Third horizontal branch; 4. Lifting structure; 41. Lifting cylinder; 42. Lifting plate; 5. Pushing cylinder; 6. Pushing plate; 7. Side plate; 8. Pushing component; 81. Telescopic cylinder one; 82. Support plate; 83. Telescopic cylinder two. DETAILED DESCRIPTION

[0029] It is easy to understand that according to the technical solution of the utility model, without changing the essential spirit of the utility model, a person skilled in the art can propose a variety of interchangeable structural modes and implementation modes. Therefore, the following specific implementation modes and drawings are only exemplary descriptions of the technical solution of the utility model, and should not be regarded as the entirety of the utility model or as a limitation or restriction to the technical solution of the utility model.

[0030] See also Figure 1 and Figure 3 This embodiment introduces a device for detecting the curvature of an aluminum alloy cast rod, which is mainly composed of a bottom steel plate 1, a movable component 2, a side plate 7, a pushing component 8, a support seat 3, etc.

[0031] Since the bottom steel plate 1, the movable assembly 2, the side plate 7 and the pushing assembly 8 are all installed on the support seat 3, the support seat 3 will be described first. The support seat 3 is composed of a first horizontal branch 31, a first inclined branch 32, a second horizontal branch 33, a second inclined branch 34 and a third horizontal branch 35 from high to low, and several branches are connected together to form the support seat 3. The first horizontal branch 31 has the highest height, and the third horizontal branch 35 has the lowest height. The first horizontal branch 31 is used to place the aluminum alloy cast rod to be tested, the third horizontal branch 35 is used to place the aluminum alloy cast rod with qualified curvature, and the second horizontal branch 33 is used to install the bottom steel plate 1, the movable assembly 2, the side plate 7 and the pushing assembly 8.

[0032] See also Figure 3 and Figure 4 , the lifting structure 4 is installed on the first horizontal branch 31, and the lifting structure 4 includes a lifting cylinder 41 and a lifting plate 42. A hole is opened on the table top of the first horizontal branch 31, and a lifting plate 42 is arranged in the hole. The bottom of the lifting plate 42 is connected to the movable end of the lifting cylinder 41, and the fixed end of the lifting cylinder 41 is fixedly connected to the first horizontal branch 31. The aluminum alloy cast rod to be tested is located on the lifting plate 42, and the top of the lifting plate 42 is preferably an inclined surface inclined toward the second horizontal branch 33. The push plate 6 is driven upward by the lifting cylinder 41 to guide the aluminum alloy cast rod to roll toward the second horizontal branch 33. Under the guidance of the first inclined branch 32, the qualified aluminum alloy cast rod passes through the gap between the movable steel plate 22 and the bottom steel plate 1, and rolls into the third horizontal branch 35 under the guidance of the second inclined branch 34, and the unqualified aluminum alloy cast rod is intercepted at the second horizontal branch 33.

[0033] The bottom steel plate 1 can be installed in the tabletop of the second horizontal branch 33 that can be installed by bolts or other means. That is, the top of the second horizontal branch 33 has an operation of embedding the bottom steel plate 1. After the bottom steel plate 1 is installed, the top of the bottom steel plate 1 is flush with the tabletop of the second horizontal branch 33. The long side of the bottom steel plate 1 forms an inclined surface that slopes outward from top to bottom, which is used to guide the aluminum alloy casting rod to roll in or out. The short side of the bottom steel plate 1 is vertically connected to the side plate 7. The bottom steel plate 1 and the side plate 7 form a "U" shape.

[0034] Please refer to Figure 2 , the movable component 2 includes a synchronous lifting structure 21, a movable steel plate 22, and a distance sensor 23. The synchronous lifting structure 21 mainly includes a screw 211, a synchronous pulley 212, a synchronous belt 213, a positive and negative motor 214, and a protective shell 215. Two screws 211 are symmetrically arranged on the top of the bottom steel plate 1, and the bottom end of the screw 211 is movably connected to the bottom steel plate 1 through a bearing. The top of the screw 211 is connected to the synchronous pulley 212. The two synchronous pulleys 212 are driven by the synchronous belt 213. To protect the synchronous pulley 212 and the synchronous belt 213, a protective shell 215 is provided at the top of the screw 211 to wrap the synchronous pulley 212 and the synchronous belt 213. At the same time, to stabilize the protective shell 215, the protective shell 215 is fixedly connected to the side plate 7. The positive and negative motor 214 is installed on the top of the protective shell 215, and the output shaft passes through the protective shell 215 and is connected to the top of one of the screws 211. Longitudinal screw holes adapted to the screw 211 are opened on the surface of the movable steel plate 22, and the screw 211 is threadedly connected to the movable steel plate 22 through the screw holes. The two ends of the movable steel plate 22 are pre-adjusted to be parallel to the bottom steel plate 1. By driving the screw 211 to rotate through the positive and negative motor 214, the height of the movable steel plate 22 can be adjusted. The short side of the movable steel plate 22 is in contact with the inner side of the side plate 7, further reducing the shaking of the movable steel plate 22 during up and down movement. A sliding protrusion is horizontally extended from the side of the movable steel plate 22, and a chute adapted to the sliding protrusion is opened on the inner wall of the side plate 7. The sliding protrusion is located in the chute, and the longitudinal movement range of the movable steel plate 22 can be limited by the length of the chute.

[0035] On both sides of the movable steel plate 22 facing away from the side plate 7, the thickness gradually decreases from inside to outside to form an inclined surface, and the edge of the inclined surface is flush with the edge of the side plate 7. A scale ruler for referring to the height of the movable steel plate 22 is provided on the side of the side plate 7. The height of the movable plate from the bottom steel plate 1 can be referred to through the scale ruler, so as to know the distance between the movable steel plate 22 and the bottom steel plate 1. The accuracy of the scale ruler is at most 1 mm, and the accuracy of the scale ruler is determined according to actual requirements and processing conditions. A distance sensor 23 is installed at the bottom of the movable steel plate 22, which can sense the distance between the movable steel plate 22 and the bottom steel plate 1.

[0036] In actual use, a special industrial computer controls the forward and reverse motor 214 to drive the screw 211 to rotate, thereby realizing the longitudinal movement of the movable steel plate 22. The data collected by the distance sensor 23 can be fed back to the industrial computer to better control the forward and reverse motor 214 and move the movable steel plate 22 to the required distance.

[0037] The pushing assembly 8 is mainly composed of a telescopic cylinder 1 81, a support plate 82 and a telescopic cylinder 2 83. A groove is provided at the bottom of the movable steel plate 22, and the groove is horizontally arranged to penetrate one side of the second inclined branch 34. The support plate 82 is located in the groove, and in the initial state, the bottom of the support plate 82 is at most flush with the bottom of the movable steel plate 22. The fixed end of the telescopic cylinder 1 81 is fixedly connected to the top of the movable steel plate 22, and a hole connected to the groove is provided on the movable steel plate 22. The movable end of the telescopic cylinder 1 81 can extend into the groove through the hole and connect with the support plate 82. Therefore, the telescopic cylinder 1 81 is used to drive the support plate 82 to move longitudinally. A through accommodating cavity is horizontally provided in the support plate 82. The fixed end of the telescopic cylinder 2 83 is installed in the accommodating cavity of the support plate 82, and the movable end can extend to the outside of the support plate 82 and face the direction of the first inclined branch 32. When the aluminum alloy casting rod is intercepted, the supporting plate 82 can be moved down and out of the groove by driving the telescopic cylinder 1 81 first, and then the aluminum alloy casting rod can be pushed away by extending the telescopic cylinder 2 83. Since the slide groove limits the range of motion of the movable steel plate 22, if the telescopic cylinder 1 81 is not blocked by the protective shell 215, the telescopic cylinder 1 81 and the synchronous belt 213 can be staggered, that is, the synchronous belt 213 is not located directly above the telescopic cylinder 1, and the bottom of the protective shell 215 has a corresponding hole. When the telescopic cylinder 1 81 follows the movable steel plate 22 to move up to the protective shell 215, the fixed end of the telescopic cylinder 1 81 can pass through the hole and enter the protective shell 215, without hindering the upward movement of the movable steel plate 22.

[0038] The marking paint may be applied to the bottom horizontal edge of the movable steel plate 22 on one side close to the first inclined branch 32. The marking paint may be absorbed by absorbent cotton or the surface of a roller to be embedded in the bottom edge of the movable steel plate 22, so that the bottom of the movable steel plate 22 has the applied marking paint, and the bottom of the marking paint is flush with the bottom of the movable steel plate 22. When the aluminum alloy cast rod is intercepted, the position where the curvature of the cast rod exceeds the tolerance will contact the marking paint, thereby being marked.

[0039] In order to facilitate the unqualified aluminum alloy casting rods to be unloaded, openings are provided on the symmetrical sides of the first inclined branch 32, and the openings are adjacent to the side plates 7. A push cylinder 5 is horizontally installed outside one of the openings, and the movable end of the push cylinder 5 faces the first inclined branch and is connected to the push plate 6. In the initial state, the push plate 6 is located in the side opening. When the unqualified aluminum alloy casting rods are pushed away, the push cylinder 5 can be driven, and the push plate 6 pushes the aluminum alloy casting rods toward the other side opening, and pushes the aluminum alloy casting rods away from the support seat 3.

[0040] Therefore, in this embodiment, the movable steel plate 22 is driven to move by the synchronous lifting structure 21 to adjust the distance between the bottom steel plate 1 and the movable steel plate 22. The distance sensor 23 can detect whether the distance between the bottom steel plate 1 and the movable steel plate 22 reaches the required distance, and can be automatically adjusted to suit different rod diameters and their allowable deviations, saving time and effort. The aluminum alloy cast rods can be pushed away from the distance between the movable steel plate 22 and the bottom steel plate 1 by the pushing component 8, and then the aluminum alloy cast rods can be pushed off the support seat 3 by the pushing cylinder 5 to separate unqualified and qualified aluminum alloy cast rods. It has a sorting function. Qualified products flow downward along the normal channel for stacking and packaging, and unqualified products flow to another channel for stacking, without the need for manual handling.

[0041] The technical scope of the present invention is not limited to the contents described above. Those skilled in the art can make various deformations and modifications to the above embodiments without departing from the technical concept of the present invention, and these deformations and modifications should all fall within the protection scope of the present invention.

Claims

1. A device for detecting the curvature of an aluminum alloy cast rod, characterized in that: It includes: The bottom steel plate (1) has its long sides inclined outward from top to bottom to form an inclined surface; The movable assembly (2) comprises a synchronous lifting structure (21), a movable steel plate (22) and a distance sensor (23); the synchronous lifting structure (21) is movably mounted on the top of the bottom steel plate (1); the threaded section of the synchronous lifting structure (21) is threadedly connected to the movable steel plate (22); the two threads cooperate to drive the movable steel plate (22) to move longitudinally; the movable steel plate (22) is located directly above the bottom steel plate (1) and the two are arranged in parallel; a groove is provided at the bottom of the movable steel plate (22); the distance sensor (23) is arranged at the bottom of the movable steel plate (22) to sense the distance between the movable steel plate (22) and the bottom steel plate (1); A side plate (7) is longitudinally mounted on the short side of the bottom steel plate (1) and is in contact with the side wall of the movable steel plate (22); The pushing assembly (8) comprises a telescopic cylinder 1 (81), a support plate (82) and a telescopic cylinder 2 (83); the support plate (82) is placed in a groove of a movable steel plate (22); the fixed end of the telescopic cylinder 1 (81) is longitudinally installed on the top of the movable steel plate (22), and the movable end penetrates into the groove of the movable steel plate (22) and is connected to the support plate (82); the telescopic cylinder 2 (83) is horizontally embedded in the support plate (82), the fixed end is fixedly connected to the support plate (82), and the movable end crosses the support plate (82) to contact and push away the aluminum alloy cast rod.

2. The device for detecting curvature of aluminum alloy cast rod according to claim 1, characterized in that: The synchronous lifting structure (21) comprises a screw rod (211), a synchronous wheel (212), a synchronous belt (213), a forward and reverse motor (214) and a protective shell (215); the number of the screw rods (211) is two, which are symmetrically and movably arranged on the top of the bottom steel plate (1); the screw rods (211) as the threaded section of the synchronous lifting structure (21) vertically penetrate the movable steel plate (22) and are screwed; the protective shell (215) is fixedly arranged on the top of the two side plates (7); the forward and reverse motors (214) are installed on the top of the protective shell (215); the output shaft of the forward and reverse motor (214) extends into the protective shell (215) and is connected to the top of one of the screw rods (211); the top of the screw rod (211) is located in the protective shell (215) and is fixedly connected to the synchronous wheel (212); the two synchronous wheels (212) are linked by the synchronous belt (213).

3. The device for detecting curvature of aluminum alloy cast rod according to claim 1, characterized in that: The thickness of the two sides of the movable steel plate (22) away from the side plate (7) gradually decreases from the inside to the outside to form an inclined surface, the edge of the inclined surface is flush with the edge of the side plate (7), and a scale ruler for referencing the height of the movable steel plate (22) is provided on the side of the side plate (7).

4. The device for detecting curvature of aluminum alloy cast rod according to claim 1, characterized in that: The side wall where the movable steel plate (22) contacts the side plate (7) extends outward horizontally to form a sliding protrusion, and the inner wall of the side plate (7) is provided with a sliding groove adapted to the sliding protrusion, and the sliding protrusion is located in the sliding groove.

5. The device for detecting curvature of aluminum alloy cast rod according to claim 1, characterized in that: The groove of the movable steel plate (22) extends horizontally toward the fixed end of the second telescopic cylinder (83) and is connected to the outside. The fixed end portion of the second telescopic cylinder (83) is located outside the support plate (82).

6. The device for detecting curvature of aluminum alloy cast rod according to claim 1, characterized in that: The aluminum alloy cast rod curvature detection device also includes a support seat (3); the support seat (3) is composed of a first horizontal branch (31), a first inclined branch (32), a second horizontal branch (33), a second inclined branch (34) and a third horizontal branch (35) from high to low, the bottom steel plate (1) is detachably mounted on the second horizontal branch (33) of the support seat (3), and the movable end of the telescopic cylinder (83) faces the first inclined branch (32); and a jacking structure (4) is installed on the first horizontal branch (31).

7. The device for detecting curvature of aluminum alloy cast rod according to claim 6, characterized in that: The lifting structure (4) comprises a lifting cylinder (41) and a lifting plate (42); the fixed end of the lifting cylinder (41) is installed at the bottom of the first horizontal branch (31) of the support seat (3); the lifting cylinder (41) is arranged longitudinally, and the movable end is upward and vertically penetrates the first horizontal branch (31) and is connected to the lifting plate (42); in the initial state, the top of the lifting plate (42) is flush with the first horizontal branch (31).

8. The device for detecting curvature of aluminum alloy cast rod according to claim 6, characterized in that: The first inclined branch (32) has openings on its symmetrical side portions, the openings being adjacent to the side plates (7), a push cylinder (5) being horizontally mounted on the outer side of one of the openings, the movable end of the push cylinder (5) being directed toward the first inclined branch (32) and connected to the push plate (6), and the push plate (6) being located in the side opening in an initial state.

9. The device for detecting curvature of aluminum alloy cast rod according to claim 6, characterized in that: A marking paint is applied to the bottom horizontal edge of the movable steel plate (22) on one side close to the first inclined branch (32).

10. The device for detecting curvature of aluminum alloy cast rod according to claim 2, characterized in that: The telescopic cylinder (81) and the synchronous belt (213) are staggered, and a through hole for the fixed end of the telescopic cylinder (81) to pass through is opened at the bottom of the protective shell (215).