Automobile aluminum alloy die casting mold quality inspection system and method

Abstract

The present application relates to the technical field of mold quality detection, and particularly relates to a quality inspection system and method for an automobile aluminum alloy die-casting mold, comprising an upper mold, a lower mold, a movable mold base plate, a rectangular quality inspection frame, an upright plate and a control component; the present application can solve the following problems existing in the process of checking the airtightness of the die-casting mold in the prior art: only the local range of the mold parting surface can be detected each time, and the one-time comprehensive inspection of the mold cannot be realized; the positions with insufficient airtightness cannot be marked, so that it is difficult for the operator to identify the gap of the parting surface, and the detection efficiency is affected; the rectangular quality inspection frame can be self-adaptively contracted along the outer contour of the upper mold and the lower mold and then abut against the outer wall of the butt joint, so that the one-time comprehensive inspection of the die-casting mold is realized; the present application marks the leakage positions of the die-casting mold, so that the operator can quickly confirm the leakage positions of the die-casting mold, and the inspection efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of mold quality detection, and in particular to a quality inspection system and method for automobile aluminum alloy die-casting molds. Background Art

[0002] As a key process equipment for pressure casting in the manufacturing industry, die-casting molds play an important role in many industrial fields. Among them, in automobile manufacturing, in order to improve the production accuracy and quality of aluminum alloy parts, automotive aluminum alloy die-casting molds are needed. Die-casting molds usually need to be quality inspected before leaving the factory and during the production of aluminum alloy parts to control the quality of die-casting molds from the source and avoid deviations in the production process of parts.

[0003] The quality inspection of die-casting molds usually includes appearance inspection, material property inspection, internal defect inspection and functional inspection. Functional inspection includes mold opening and closing test, smoothness during the mold opening and closing process, and airtightness after mold closing to ensure that the molten metal liquid will not leak during the die-casting process.

[0004] The prior art also discloses die-casting mold airtightness detection and corresponding devices. For a more accurate comparison, a Chinese patent with publication number CN119245968A discloses a die-casting machine mold airtightness detection device, including a base, a mounting frame, an arc block and a circular sealing block; when the prior art is in use, after the die-casting machine mold is closed, the circular sealing block is controlled to be in close contact with the die of the die-casting machine and located on the parting surface of the mold, and then air is pumped out to reduce the air pressure in the circular sealing block and maintain a negative pressure state; when the die-casting machine mold is insufficiently airtight after closing the mold, the air in the mold will enter the circular sealing block, causing the air pressure in the circular sealing block to rise, and then the circular sealing block is moved to perform airtightness detection on the remaining parts of the mold parting surface.

[0005] However, in the process of using the above-mentioned existing technology to check the tightness of the die-casting mold, there are still the following shortcomings:

[0006] 1. Only a local area of ​​the mold parting surface can be inspected each time, and a one-time comprehensive inspection of the mold cannot be achieved. When adjusting the position of the circular sealing block, it is necessary to have close contact with the mold, which causes the mold to be stressed. Therefore, when adjusting the position of the circular sealing block after local inspection, it is easy to cause gaps between the parting surfaces and affect the inspection progress. It is also easy to miss inspections, thereby affecting the inspection accuracy.

[0007] 2. Since it is impossible to visually see whether there is a gap in the joint of the die-casting mold after the mold is closed, the above-mentioned existing technology cannot mark the position where the airtightness is insufficient when detecting the airtightness of the mold parting surface. The circular sealing block needs to be moved to fully detect the parting surface of the mold. Therefore, it is easy for the operator to find it difficult to identify the gap of the parting surface, and multiple confirmations are required, which affects the detection efficiency.

[0008] Therefore, based on the above-stated viewpoint, there is still room for improvement in the inspection means of die-casting molds in the prior art. Summary of the Invention

[0009] In order to solve the above problems, the present invention provides an automotive aluminum alloy die-casting mold quality inspection system, comprising an upper mold and a lower mold, a movable mold base plate on the top of the upper mold, the upper mold and the movable mold base plate are integrally formed, and the upper ends of the upper mold and the movable mold base plate are jointly provided with a feed hole for injecting molten metal, and the outer cover of the joint between the upper mold and the lower mold is provided with a rectangular quality inspection frame for checking the airtightness of the joint between the upper mold and the lower mold after the mold is closed, and vertical plates are detachably installed at the four corners of the lower end of the movable mold base plate, and a control component is jointly provided between the multiple vertical plates for supporting the rectangular quality inspection frame and driving the rectangular quality inspection frame to perform airtightness inspection on the joint between the upper mold and the lower mold after the mold is closed.

[0010] As a preferred technical solution of the present invention, the rectangular quality inspection frame is composed of two rectangular frames distributed vertically, and a plurality of monitoring mechanisms for performing airtightness inspection are installed at equal intervals between the two rectangular frames;

[0011] The rectangular frame includes a plurality of support columns that are evenly spaced and vertically arranged. Two elastic pull rods are symmetrically installed between two adjacent support columns. The side of the elastic pull rod close to the die-casting mold is flush with the side of the support column close to the die-casting mold. A monitoring frame is formed between every two adjacent support columns and the elastic pull rods, and the monitoring mechanism is arranged in the monitoring frame.

[0012] As a preferred technical solution of the present invention, the control component includes a cylinder installed on a vertical plate, the telescopic end of the cylinder points to the rectangular quality inspection frame and is installed with a movable plate, and the movable plate is slidingly provided with a right-angle block connected to the rectangular quality inspection frame on the side close to the rectangular quality inspection frame, and two guide plates are symmetrically provided along the width direction on the side of the vertical plate close to the rectangular quality inspection frame, and sliding sleeves are installed at both ends of the movable plate and are slidably sleeved on the outer wall of the guide plate.

[0013] As a preferred technical solution of the present invention, a rectangular slot is provided on the outer wall of the rectangular frame, and two right-angle rods docked in the rectangular slot are symmetrically provided on the upper and lower sides of the right-angle block close to the rectangular quality inspection frame.

[0014] As a preferred technical solution of the present invention, the monitoring mechanism includes an elastic stretching plate installed on the inner wall of the monitoring frame, the elastic stretching plate is located on the side of the monitoring frame close to the butt joint, a connecting plate is provided in the middle of the elastic stretching plate, a vent is opened in the middle of the connecting plate, and a support plate is installed on the side of the connecting plate away from the butt joint through an annular telescopic cylinder;

[0015] The monitoring mechanism also includes a sealing cover installed on the side of the monitoring frame away from the butt joint. The sealing cover includes two positioning plates respectively installed on the side walls of the support column. An elastic belt for covering the outside of the monitoring frame is provided between the two positioning plates. A supporting plate is provided in the middle of the elastic belt. A positioning plate is installed on the side of the supporting plate close to the supporting plate. The positioning plate is installed with an execution unit for checking whether there is gas leakage and a marking unit for marking the leakage point.

[0016] As a preferred technical solution of the present invention, a groove is opened in the middle of the support column, and a vertical baffle is set in the middle of the groove. The vertical baffle is flush with the side of the support column close to the die-casting mold and the width of the vertical baffle gradually decreases towards the side close to the die-casting mold.

[0017] As a preferred technical solution of the present invention, the actuator unit includes a displacement column installed on the side of the support plate away from the connecting plate, a return spring is installed between the displacement column and the supporting plate after the displacement column slides through the positioning plate, and an electrode ring is provided on the end of the displacement column away from the support plate, and an electrode ring used in conjunction with the electrode ring is provided on the side of the supporting plate close to the positioning plate;

[0018] A branch controller electrically connected to the electrode ring is provided on the side wall of the positioning plate, and multiple branch controllers in the rectangular quality inspection frame are electrically connected to each other. A main controller is provided at the lower end of the movable mold base plate, and the main controller is electrically connected to multiple branch controllers.

[0019] As a preferred technical solution of the present invention, the marking unit includes two receiving grooves provided inside the connecting plate, a piston plate is slidably provided in the receiving groove, a reciprocating rod is installed on the side of the piston plate away from the support plate, and a dyeing sponge for marking the outer walls of the upper mold and the lower mold is detachably provided on the end of the reciprocating rod away from the piston plate through a clamping sleeve;

[0020] Two through holes connected to the accommodating grooves are provided on opposite sides of the connecting plate and the support plate, and a telescopic tube connected to the through holes is provided between the connecting plate and the support plate. Two telescopic airbags connected to the through holes are installed between the support plate and the supporting plate, and a support spring is provided inside the telescopic airbag.

[0021] As a preferred technical solution of the present invention, a feeding hole is formed through the middle of the reciprocating rod and the piston plate along the axial direction thereof. A feeding pipe connected to the feeding hole is provided on the side of the piston plate away from the reciprocating rod. The end of the feeding pipe away from the piston plate passes through the supporting plate and is connected to a feeding pipe. The feeding pipe is connected to multiple feeding pipes on the rectangular quality inspection frame.

[0022] A plurality of storage boxes are provided at the lower end of the movable mold base plate, a water pump connected to the feeding pipe is provided at the lower end of the storage box, and a valve port for replenishing the pigment liquid is provided on the storage box.

[0023] In addition, the present invention also provides a method for inspecting the quality of an automotive aluminum alloy die-casting mold, comprising the following steps:

[0024] S1: Component adjustment: First, control the upper mold and the lower mold to close the mold, and the movable mold base drives the control component and the rectangular quality inspection frame to move downward as a whole, so that the rectangular quality inspection frame moves downward to the outside of the joint between the upper mold and the lower mold;

[0025] S2: Component preparation: The rectangular quality inspection frame is driven by the control component to press against the outer wall of the joint between the upper mold and the lower mold;

[0026] S3: Filling with high-pressure gas: Adding high-pressure gas into the cavity between the upper mold and the lower mold;

[0027] S4: Sealing inspection: The butt joint between the upper mold and the lower mold is monitored through a rectangular quality inspection frame to check whether there is any gas leakage from the butt joint in the cavity. This is used to check the sealing of the die-casting mold and mark the locations where the sealing of the die-casting mold does not meet the standards.

[0028] In summary, this application has the following beneficial technical effects:

[0029] 1. The present invention uses a right-angle block in conjunction with a right-angle rod to drive a rectangular frame to adaptively shrink along the outer contours of the upper and lower molds and then abut against the outer wall of the butt joint, thereby achieving a one-time comprehensive inspection of the die-casting mold. The butt joint between the upper and lower molds is then monitored by a monitoring mechanism. In this way, the adaptability of the present invention can be improved by using a rectangular quality inspection frame that can adaptively expand and contract according to the outer contours of the upper and lower molds, and the airtightness of die-casting molds of different sizes can be inspected.

[0030] 2. The present invention forms a gas storage cavity for storing gas through a connecting plate, an annular telescopic cylinder and a supporting plate, which can separate the butt joint between the upper mold and the lower mold into multiple monitoring points. Simultaneous monitoring of multiple monitoring points can not only improve the inspection efficiency, but also improve the inspection accuracy. The specific location of the leakage can be detected, and the simultaneous inspection of the butt joint between the upper mold and the lower mold can avoid missed detection.

[0031] 3. The present invention uses the leaked gas to push the support plate to move and squeeze the telescopic airbag, so that the gas in the telescopic airbag drives the piston plate, reciprocating rod and impregnated sponge to move as a whole, and the impregnated sponge presses a pigment mark on the outer wall of the upper mold and the lower mold to indicate that there is leakage in the joint of the die-casting mold. This makes it convenient for the operator to quickly confirm the location of the leakage in the die-casting mold based on the pigment mark, thereby improving the inspection efficiency. In addition, through multiple sets of marking units, different positions of the die-casting mold can be marked according to the actual detection results to ensure inspection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The present invention will be further described below with reference to the accompanying drawings and examples.

[0033] Figure 1 It is a structural schematic diagram of the present invention.

[0034] Figure 2 It is a structural diagram of the rectangular frame, monitoring mechanism and control components of the present invention.

[0035] Figure 3 It is a schematic structural diagram of the rectangular frame, right-angle blocks and right-angle rods of the present invention.

[0036] Figure 4 This invention Figure 3 A partial enlarged view of point A.

[0037] Figure 5 It is a structural diagram of the monitoring mechanism of the present invention.

[0038] Figure 6 This invention Figure 5 A partial enlarged view of point B.

[0039] Figure 7 It is a structural diagram of the movable mold base plate, the main controller and the material storage box of the present invention.

[0040] Figure 8 It is a structural diagram of the support column, monitoring mechanism and marking unit of the present invention.

[0041] Figure 9 This invention Figure 8 A partial enlarged view of point C.

[0042] Figure 10 This invention Figure 8 A partial enlarged view of point D.

[0043] Figure 11 This invention Figure 8 A partial enlarged view of point E.

[0044] In the figure, 1, upper mold; 2, lower mold; 3, movable mold base plate; 4, rectangular quality inspection frame; 41, rectangular frame; 411, support column; 412, elastic pull rod; 413, groove; 414, vertical baffle; 42, monitoring mechanism; 421, elastic stretch plate; 422, connecting plate; 423, annular telescopic cylinder; 424, support plate; 425, sealing cover; 426, positioning plate; 427, elastic belt; 428, supporting plate; 429, supporting telescopic rod; 420, positioning plate; 43, execution unit; 431, displacement column; 432, return spring; 433, electrode ring; 434 , electrode ring; 435, branch controller; 436, main controller; 44, marking unit; 441, receiving groove; 442, piston plate; 443, reciprocating rod; 444, ferrule; 445, impregnated sponge; 446, telescopic tube; 447, telescopic airbag; 448, support spring; 449, supply hole; 450, feeding pipe; 451, feeding pipe; 452, storage box; 453, water pump; 5, vertical plate; 6, control component; 61, cylinder; 62, moving plate; 63, right-angle block; 64, guide plate; 65, sliding sleeve; 66, rectangular slide; 67, right-angle rod. DETAILED DESCRIPTION

[0045] The following is combined with Figure 1-11 The embodiments of the present invention are described in detail.

[0046] The embodiment of the present application discloses a quality inspection system for automotive aluminum alloy die-casting molds. It should be noted that the quality inspection system for automotive aluminum alloy die-casting molds of the present application is mainly used in the process of performing airtightness inspection on die-casting molds. In terms of technical effect, a rectangular quality inspection frame 4 that can adaptively expand and contract according to the outer contours of the upper mold 1 and the lower mold 2 is pressed against the outer wall of the butt joint, and then the butt joint between the upper mold 1 and the lower mold 2 is monitored by the monitoring mechanism 42. This can improve the adaptability of the present invention and can perform airtightness inspection on die-casting molds of different sizes. In particular, in the process of airtightness monitoring, the upper mold 1 and the lower mold can be 2 is divided into multiple monitoring points. Simultaneous monitoring of multiple monitoring points can not only improve the inspection efficiency, but also improve the inspection accuracy. The specific location where the leakage occurs can be checked, and the simultaneous inspection of the butt joint between the upper mold 1 and the lower mold 2 can avoid missed detection. Furthermore, the automotive aluminum alloy die-casting mold quality inspection system of the present application can also make pigment marks on the location of leaked gas to indicate that there is leakage in the butt joint of the die-casting mold, which is convenient for the operator to quickly confirm the location of the leakage in the die-casting mold according to the pigment mark, thereby improving the inspection efficiency, and can mark different positions of the die-casting mold to ensure inspection accuracy.

[0047] Reference Figure 1As shown, a quality inspection system for automobile aluminum alloy die-casting molds includes an upper mold 1 and a lower mold 2. The upper mold 1 has a movable mold base plate 3 on the top. The upper mold 1 and the movable mold base plate 3 are integrally formed, and the upper ends of the upper mold 1 and the movable mold base plate 3 are jointly provided with a feed hole for injecting molten metal. The outer cover of the joint between the upper mold 1 and the lower mold 2 is provided with a rectangular quality inspection frame 4, which is used to check the airtightness of the joint between the upper mold 1 and the lower mold 2 after the mold is closed. Vertical plates 5 are detachably installed at the four corners of the lower end of the movable mold base plate 3. A control component 6 is commonly provided between the multiple vertical plates 5, which is used to support the rectangular quality inspection frame 4 and drive the rectangular quality inspection frame 4 to check the airtightness of the joint between the upper mold 1 and the lower mold 2 after the mold is closed.

[0048] During the specific implementation process, when it is necessary to check the tightness of the die-casting mold, the upper mold 1 and the lower mold 2 are first controlled to close, and the movable mold base plate 3 drives the control component 6 and the rectangular quality inspection frame 4 to move down and reset as a whole through the vertical plate 5, so that the rectangular quality inspection frame 4 is reset to the outside of the joint between the upper mold 1 and the lower mold 2; then the rectangular quality inspection frame 4 is driven by the control component 6 to lean against the outer wall of the joint between the upper mold 1 and the lower mold 2, and then high-pressure gas is added to the cavity between the upper mold 1 and the lower mold 2 through the feed hole through the external high-pressure air pump. At the same time, the joint between the upper mold 1 and the lower mold 2 is monitored by the rectangular quality inspection frame 4 to check whether there is any gas in the cavity leaking from the joint, thereby realizing the tightness inspection of the die-casting mold. If the tightness of the die-casting mold does not meet the standard, the rectangular quality inspection frame 4 detects gas leakage and makes a mark at the position corresponding to the leaking gas, so that the operator can check and repair the die-casting mold according to the marked position.

[0049] It should be noted that when the upper mold 1 and the lower mold 2 are opened, the movable mold base plate 3 drives the upper mold 1 to move upward. During this period, the movable mold base plate 3 drives the control component 6 and the rectangular quality inspection frame 4 to move upward as a whole through the vertical plate 5 to avoid affecting the removal of the die-casting in the lower mold 2. When the upper mold 1 and the lower mold 2 are closed, the movable mold base plate 3 drives the control component 6 and the rectangular quality inspection frame 4 to move downward and reset through the vertical plate 5, so that the rectangular quality inspection frame 4 is covered on the outside of the joint between the upper mold 1 and the lower mold 2, but does not affect the normal opening and closing of the upper mold 1 and the lower mold 2, so that the die-casting mold can be checked for tightness at any time. In addition, the tightness check can also be performed while the mold is closed, which is used to monitor the tightness of the die-casting mold in real time to ensure the use status of the die-casting mold.

[0050] Reference Figure 2 As shown, in order to facilitate a comprehensive airtightness inspection of the joint between the upper mold 1 and the lower mold 2, in this embodiment, the rectangular quality inspection frame 4 is composed of two rectangular frames 41 distributed up and down, and a plurality of monitoring mechanisms 42 for airtightness inspection are installed at equal intervals between the two rectangular frames 41.

[0051] Furthermore, in this embodiment, the rectangular frame 41 includes a plurality of support columns 411 that are evenly spaced and vertically arranged, and two elastic pull rods 412 are symmetrically installed between two adjacent support columns 411. The side of the elastic pull rod 412 close to the die-casting mold is flush with the side of the support column 411 close to the die-casting mold. A monitoring frame is formed between every two adjacent support columns 411 and the elastic pull rod 412, and the monitoring mechanism 42 is arranged in the monitoring frame; it should be noted that the elastic pull rod 412 will undergo elastic stretching when subjected to external force, and will rebound and reset when there is no external force. In this way, the rectangular frame 41 becomes an elastic structure that can expand and contract; in addition, the rectangular frame 41 drives the monitoring mechanism 42 to rest against the outer wall of the die-casting mold, thereby facilitating the tightness inspection of die-casting molds of different sizes.

[0052] Reference Figure 2 、 Figure 3 and Figure 4 As shown, in order to enable the elastic structure of the rectangular frame 41 to be tightly against the outer wall of the die-casting mold, a control component 6 capable of controlling the expansion and contraction of the rectangular frame 41 is provided in this embodiment. Specifically, the control component 6 includes a cylinder 61 installed on the vertical plate 5, the telescopic end of the cylinder 61 points to the rectangular quality inspection frame 4 and is installed with a movable plate 62, and the movable plate 62 is slidingly provided with a right-angle block 63 connected to the rectangular quality inspection frame 4 on the side close to the rectangular quality inspection frame 4, and two guide plates 64 are symmetrically provided along the width direction on the side of the vertical plate 5 close to the rectangular quality inspection frame 4, and sliding sleeves 65 slidably mounted on the outer wall of the guide plate 64 are installed at both ends of the movable plate 62. When the movable plate 62 moves, it can drive the sliding sleeve 65 to slide along the guide plate 64, thereby ensuring the stability of the movable plate 62.

[0053] Furthermore, in this embodiment, a rectangular slot 66 is provided on the outer wall of the rectangular frame 41, and two right-angled rods 67 docked in the rectangular slot 66 are symmetrically provided on the upper and lower sides of the right-angle block 63 close to the rectangular quality inspection frame 4. When the rectangular frame 41 is in the rebound state, there is a certain distance between the two adjacent right-angled rods 67, which is used to play a role of giving way when the rectangular frame 41 contracts, so as to avoid the ends of the two adjacent right-angled rods 67 abutting against each other and causing the rectangular frame 41 to be unable to contract normally. It should be noted that in order to ensure that the right-angled rods 67 can firmly support the rectangular quality inspection frame 4 and will not affect the normal expansion and contraction of the rectangular frame 41, the cross-section of the rectangular slot 66 and the right-angled rod 67 is preferably a convex structure (not shown in the figure), ensuring that the right-angled rod 67 and the rectangular slot 66 are fastened while sliding, so as to avoid the rectangular frame 41 falling off the right-angled rod 67.

[0054] During the specific implementation process, when it is necessary to check the tightness of the die-casting mold, after the upper mold 1 and the lower mold 2 are closed, the cylinder 61 is started, and the cylinder 61 drives the movable plate 62 to move toward the side close to the rectangular quality inspection frame 4, and the movable plate 62 drives the right-angle block 63 to move synchronously, so that the right-angle block 63 drives the rectangular frame 41 to adaptively shrink along the outer contour of the upper mold 1 and the lower mold 2 through the right-angle rod 67, so that the rectangular frame 41 rests against the outer wall of the joint between the upper mold 1 and the lower mold 2, thereby realizing a one-time comprehensive inspection of the die-casting mold, and then the joint between the upper mold 1 and the lower mold 2 is monitored by the monitoring mechanism 42. In this way, the adaptability of the present invention can be improved by using the rectangular quality inspection frame 4 that can adaptively expand and shrink according to the outer contour of the upper mold 1 and the lower mold 2, and the tightness of die-casting molds of different sizes can be checked.

[0055] When the movable plate 62 drives the right-angle block 63 to move, the right-angle block 63 can slide adaptively along the movable plate 62 , so as to adjust its position adaptively according to the outer contours of the upper mold 1 and the lower mold 2 .

[0056] Reference Figure 5 and Figure 6 As shown, in order to facilitate the tightness inspection of the die-casting mold, a monitoring mechanism 42 is provided in this embodiment to monitor whether there is gas leakage at the joint between the upper mold 1 and the lower mold 2. Specifically, the monitoring mechanism 42 includes an elastic stretching plate 421 installed on the inner wall of the monitoring frame. The elastic stretching plate 421 is located on the side of the monitoring frame close to the joint. A connecting plate 422 is provided in the middle of the elastic stretching plate 421. A vent hole is opened in the middle of the connecting plate 422. A side of the connecting plate 422 away from the joint is installed with a ring-shaped telescopic cylinder 423. Support sheet 424, when the rectangular quality inspection frame 4 is against the outer wall of the joint between the upper mold 1 and the lower mold 2, the vent hole is used to receive the leaked gas, and the connecting plate 422, the annular telescopic cylinder 423 and the support sheet 424 constitute a gas storage cavity for storing gas. The joint can be divided into multiple monitoring points through multiple gas storage cavities. Simultaneous monitoring of multiple monitoring points can not only improve the inspection efficiency, but also improve the inspection accuracy. The specific location of the leakage can be detected, and the simultaneous inspection of the joint between the upper mold 1 and the lower mold 2 can avoid missed detection.

[0057] Furthermore, in this embodiment, the monitoring mechanism 42 also includes a sealing cover 425 installed on the side of the monitoring frame away from the joint, and the sealing cover 425 includes two positioning plates 426 respectively installed on the side walls of the support column 411, and an elastic belt 427 for covering the outside of the monitoring frame is provided between the two positioning plates 426, and a supporting plate 428 is provided in the middle of the elastic belt 427. A plurality of annularly distributed supporting telescopic rods 429 are installed between the supporting plate 428 and the supporting plate 424. The supporting telescopic rods 429 can support the supporting plate 424, and the supporting telescopic rods 429 can adaptively expand and contract under the action of external force. A positioning plate 420 is installed on the side of the supporting plate 428 close to the supporting plate 424, and an execution unit 43 for checking whether there is gas leakage and a marking unit 44 for marking the leakage are installed on the positioning plate 420.

[0058] It should be noted that when the right-angle block 63 moves and drives the rectangular quality inspection frame 4 to expand and contract, the elastic pull rod 412 undergoes elastic deformation, so the monitoring frame also undergoes elastic deformation. At this time, the elastic stretching plate 421 and the elastic belt 427 can both undergo elastic deformation under the action of external force. In addition, in this embodiment, a telescopic plate is installed between the support plate 424 and the two positioning plates 426. The telescopic plate can adaptively expand and contract under the action of external force, thereby further ensuring the stability of the support plate 424.

[0059] During the specific implementation process, the rectangular quality inspection frame 4 rests against the outer wall of the joint between the upper mold 1 and the lower mold 2. If there is leakage in the joint, the gas inside the die-casting mold leaks out along the leakage point, and the leaked gas enters the air storage cavity at the corresponding position and causes the air storage cavity to gradually expand. At this time, the execution unit 43 can monitor that the gas in the air storage cavity gradually increases, thereby realizing the airtightness inspection of the die-casting mold, and the leakage point is marked by the marking unit 44, which is convenient for the operator to check and perform corresponding maintenance on the die-casting mold.

[0060] Reference Figure 8As shown, it is necessary to further explain that, since the support column 411 has a certain width, when the rectangular quality inspection frame 4 is against the outer wall of the upper mold 1 and the lower mold 2, the support column 411 will block part of the range of the joint. If there is leakage at the blocked position, it is easy to be unable to detect the situation. In order to avoid the occurrence of this problem, in this embodiment, a groove 413 is opened in the middle of the support column 411, and a vertical blocking bar 414 is provided in the middle of the groove 413. The vertical blocking bar 414 and the support column 411 are close to the die-casting mold. One side is flush with each other, and the groove 413 can be divided into two parts by the vertical baffle 414, so that the two parts of the groove 413 are respectively connected to the two adjacent air storage cavities. When the rectangular quality inspection frame 4 is against the outer wall of the die-casting mold, the support column 411 drives the vertical baffle 414 to rest against the outer walls of the upper mold 1 and the lower mold 2, and the width of the vertical baffle 414 gradually decreases toward the side close to the die-casting mold, which is used to greatly reduce the contact area between the vertical baffle 414 and the joint, so as to avoid blocking the joint and affecting the inspection accuracy.

[0061] Reference Figure 6 、 Figure 7 、 Figure 8 and Figure 9 As shown, in order to monitor the gas leaking into the gas storage cavity, an execution unit 43 is provided in this embodiment. Specifically, the execution unit 43 includes a displacement column 431 installed on the side of the support plate 424 away from the connecting plate 422. After the displacement column 431 slides through the positioning plate 420, a return spring 432 is installed between the displacement column 431 and the supporting plate 428. The return spring 432 always applies a pushing force to the displacement column 431, so that the displacement column 431 drives the support plate 424 to move toward the side close to the connecting plate 422 in the initial state. At this time, the support plate 424 and the connecting plate 428 are connected. The distance between the plates 422 is the smallest, and an electrode ring 433 is provided at one end of the displacement column 431 away from the support plate 424, and an electrode ring 434 used in conjunction with the electrode ring 433 is provided on the side of the supporting plate 428 close to the positioning plate 420; a branch controller 435 electrically connected to the electrode ring 434 is provided on the side wall of the positioning plate 420, and multiple branch controllers 435 in the rectangular quality inspection frame 4 are electrically connected, and a main controller 436 is provided at the lower end of the movable mold base plate 3, and the main controller 436 and multiple branch controllers 435 are electrically connected.

[0062] During the specific implementation process, if there is leakage in the joint between the upper mold 1 and the lower mold 2, the gas inside the die-casting mold will leak through the leakage to the air storage cavity at the corresponding position. As the gas in the air storage cavity gradually increases, the gas pushes the support plate 424 to move to the side away from the connecting plate 422, and the support plate 424 drives the electrode ring 433 to move synchronously through the displacement column 431; when the electrode ring 433 comes into contact with the electrode ring 434, the electrode ring 434 transmits a signal to the branch controller 435, and the branch controller 435 transmits a signal to the main controller 436, so that the main controller 436 receives the information that there is leakage in the joint, and the main controller 436 transmits the leakage information to the external console for the operator to view.

[0063] If there is no leakage in the joint between the upper mold 1 and the lower mold 2, the support plate 424, the displacement column 431 and the electrode ring 433 do not move, and there is no contact between the electrode ring 433 and the electrode ring 434, so no leakage signal will be issued.

[0064] Reference Figure 8 、 Figure 10 and Figure 11 As shown, in order to facilitate the operator to quickly find the leakage location and perform corresponding maintenance on the die-casting mold, a marking unit 44 is provided in this embodiment. Specifically, the marking unit 44 includes two receiving grooves 441 opened inside the connecting plate 422, and the two receiving grooves 441 are symmetrically distributed along the vent hole. A piston plate 442 is slidingly arranged in the receiving groove 441, and a reciprocating rod 443 is installed on the side of the piston plate 442 away from the support plate 424. The end of the reciprocating rod 443 away from the piston plate 442 is detachably provided with a dyed sponge 445 for making marks on the outer walls of the upper mold 1 and the lower mold 2 through a sleeve 444.

[0065] Furthermore, in this embodiment, two through holes connected to the accommodating groove 441 are provided on opposite sides of the connecting plate 422 and the supporting plate 424, and a telescopic tube 446 connected to the through holes is provided between the connecting plate 422 and the supporting plate 424, and two telescopic airbags 447 connected to the through holes are installed between the support plate 424 and the supporting plate 428, and a support spring 448 is provided inside the telescopic airbag 447. The support spring 448 always applies a supporting force to the telescopic airbag 447, so that the telescopic airbag 447 remains in an extended state in the initial state. At this time, the piston plate 442 is located on the side of the accommodating groove 441 close to the telescopic airbag 447.

[0066] Furthermore, in this embodiment, a supply hole 449 is provided through the middle part of the reciprocating rod 443 and the piston plate 442 along the axial direction thereof, so that the pigment liquid in the supply hole 449 can penetrate into the impregnated sponge 445, and a supply pipe 450 connected to the supply hole 449 is provided on the side of the piston plate 442 away from the reciprocating rod 443, and the end of the supply pipe 450 away from the piston plate 442 passes through the supporting plate 428 and is connected to the feeding pipe 451, and the feeding pipe 451 is connected to the multiple supply pipes 450 on the rectangular quality inspection frame 4; a plurality of storage boxes 452 are provided at the lower end of the movable mold base plate 3, and a water pump 453 connected to the feeding pipe 451 is provided at the lower end of the storage box 452, and a valve port is provided on the storage box 452 for convenient replenishment of pigment liquid.

[0067] It should be noted that when the support column 411 and the elastic pull rod 412 are in conflict with the outer walls of the upper mold 1 and the lower mold 2, there is a certain distance between the impregnated sponge 445 and the outer walls of the upper mold 1 and the lower mold 2.

[0068] During the specific implementation process, the water pump 453 is started, and the water pump 453 transports the pigment liquid in the storage box 452 to the feeding pipe 451. The pigment liquid in the feeding pipe 451 is respectively transported to the multiple supply holes 449 through the multiple feeding pipes 450, and then infiltrates into the multiple impregnated sponges 445 for standby use; if there is leakage in the die-casting mold and leaks from the joint between the upper mold 1 and the lower mold 2, the leaked gas pushes the support plate 424 to move to the side away from the connecting plate 422, and the support plate 424 squeezes the telescopic airbag 447, thereby The gas in 47 is squeezed into the accommodating groove 441, so that the piston plate 442 drives the reciprocating rod 443 and the impregnated sponge 445 to move as a whole to the side away from the support plate 424, and the impregnated sponge 445 presses out a pigment mark on the outer wall of the upper mold 1 and the lower mold 2 to indicate that there is leakage in the joint of the die-casting mold here, which makes it convenient for the operator to quickly confirm the location of the leakage in the die-casting mold according to the pigment mark, thereby improving the inspection efficiency, and through multiple sets of marking units 44, different positions of the die-casting mold can be marked according to the actual detection results to ensure the inspection accuracy.

[0069] After the inspection of the die-casting mold is completed, the air inside the die-casting mold is extracted, and the gas in the air storage cavity is also extracted. At this time, the support plate 424 is reset under the action of the support spring 448, and the telescopic airbag 447 is reset to the extended state and the gas in the receiving groove 441 is extracted, so that the piston plate 442 drives the reciprocating rod 443 and the impregnated sponge 445 to reset for the next use.

[0070] In addition, the present invention also provides a method for inspecting the quality of an automotive aluminum alloy die-casting mold, comprising the following steps:

[0071] S1: Component adjustment: First, control the upper mold 1 and the lower mold 2 to close the mold, and the movable mold base plate 3 drives the vertical plate 5, the cylinder 61, the movable plate 62 and the rectangular quality inspection frame 4 to move downward as a whole, so that the rectangular quality inspection frame 4 moves downward to the outside of the joint between the upper mold 1 and the lower mold 2.

[0072] S2: Component preparation: Start the cylinder 61, which drives the movable plate 62 to move toward the side close to the rectangular quality inspection frame 4. The movable plate 62 drives the right-angle block 63 to move synchronously, so that the right-angle block 63 drives the rectangular frame 41 to adaptively shrink along the outer contour of the upper mold 1 and the lower mold 2 through the right-angle rod 67, so that the rectangular frame 41 rests against the outer wall of the joint between the upper mold 1 and the lower mold 2.

[0073] S3: Filling with high-pressure gas: Adding high-pressure gas into the cavity between the upper mold 1 and the lower mold 2 through an external high-pressure air pump.

[0074] S4: Sealing check: Start the water pump 453, which transports the pigment liquid in the storage box 452 to the feeding pipe 451. The pigment liquid in the feeding pipe 451 is transported to the multiple supply holes 449 through the multiple feeding pipes 450, and seeps into the multiple impregnated sponges 445 for standby use.

[0075] If there is leakage in the joint between the upper mold 1 and the lower mold 2, the gas inside the die-casting mold will leak through the leakage to the air storage cavity at the corresponding position. As the gas in the air storage cavity gradually increases, the gas pushes the support plate 424 to move to the side away from the connecting plate 422, and the support plate 424 drives the electrode ring 433 to move synchronously through the displacement column 431; when the electrode ring 433 comes into contact with the electrode ring 434, the electrode ring 434 transmits a signal to the branch controller 435, and the branch controller 435 transmits a signal to the main controller 436, so that the main controller 436 receives the information that there is leakage in the joint, and the main controller 436 transmits the leakage information to the external console for the operator to check.

[0076] When the leaked gas pushes the support plate 424 to move to the side away from the connecting plate 422, the support plate 424 squeezes the telescopic airbag 447, squeezing the gas in the telescopic airbag 447 into the accommodating groove 441, so that the piston plate 442 drives the reciprocating rod 443 and the impregnated sponge 445 to move as a whole to the side away from the support plate 424, and the impregnated sponge 445 presses a paint mark on the outer wall of the upper mold 1 and the lower mold 2 to indicate that there is leakage in the joint of the die-casting mold here, so that the operator can quickly confirm the location of the leakage in the die-casting mold according to the paint mark.

[0077] After the inspection of the die-casting mold is completed, the air inside the die-casting mold is extracted, and the gas in the air storage cavity is also extracted. At this time, the support plate 424 is reset under the action of the support spring 448, and the telescopic airbag 447 is reset to the extended state and the gas in the receiving groove 441 is extracted, so that the piston plate 442 drives the reciprocating rod 443 and the impregnated sponge 445 to reset for the next use.

[0078] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention.

[0079] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A quality inspection system for automobile aluminum alloy die-casting molds, comprising an upper mold (1) and a lower mold (2), wherein the upper mold (1) has a movable mold base plate (3) on its top, the upper mold (1) and the movable mold base plate (3) are integrally formed, and a feed hole for injecting molten metal is provided on the upper ends of the upper mold (1) and the movable mold base plate (3), characterized in that: The outer cover of the joint between the upper mold (1) and the lower mold (2) is provided with a rectangular quality inspection frame (4) for inspecting the tightness of the joint between the upper mold (1) and the lower mold (2) after mold closing. The four corners of the lower end of the movable mold base plate (3) are detachably mounted with vertical plates (5). A control component (6) is commonly provided between the plurality of vertical plates (5) for supporting the rectangular quality inspection frame (4) and driving the rectangular quality inspection frame (4) to inspect the tightness of the joint between the upper mold (1) and the lower mold (2) after mold closing. The rectangular quality inspection frame (4) is composed of two rectangular frames (41) distributed vertically, and a plurality of monitoring mechanisms (42) for performing airtightness inspection are installed at equal intervals between the two rectangular frames (41); The rectangular frame (41) includes a plurality of support columns (411) distributed at equal intervals and arranged vertically, two elastic pull rods (412) are symmetrically installed between two adjacent support columns (411), and the side of the elastic pull rod (412) close to the die-casting mold is flush with the side of the support column (411) close to the die-casting mold. A monitoring frame is formed between every two adjacent support columns (411) and the elastic pull rod (412), and the monitoring mechanism (42) is arranged in the monitoring frame; The monitoring mechanism (42) includes an execution unit (43) for checking whether there is gas leakage and a marking unit (44) for marking the leakage location.

2. The automotive aluminum alloy die-casting mold quality inspection system according to claim 1, characterized in that: The control component (6) includes a cylinder (61) installed on the vertical plate (5), the telescopic end of the cylinder (61) points to the rectangular quality inspection frame (4) and is installed with a movable plate (62), and a right-angle block (63) connected to the rectangular quality inspection frame (4) is slidably provided on the side of the movable plate (62) close to the rectangular quality inspection frame (4), and two guide plates (64) are symmetrically provided along the width direction on the side of the vertical plate (5) close to the rectangular quality inspection frame (4), and sliding sleeves (65) are installed at both ends of the movable plate (62) and are slidably sleeved on the outer wall of the guide plate (64).

3. The automotive aluminum alloy die-casting mold quality inspection system according to claim 2, characterized in that: The outer wall of the rectangular frame (41) is provided with a rectangular chute (66), and two right-angle rods (67) docked in the rectangular chute (66) are symmetrically arranged on the upper and lower sides of the right-angle block (63) close to the rectangular quality inspection frame (4).

4. The automotive aluminum alloy die-casting mold quality inspection system according to claim 1, characterized in that: The monitoring mechanism (42) further comprises an elastic stretching plate (421) mounted on the inner wall of the monitoring frame, the elastic stretching plate (421) being located on a side of the monitoring frame close to the butt joint, a connecting plate (422) being provided in the middle of the elastic stretching plate (421), a vent being provided in the middle of the connecting plate (422), and a supporting plate (424) being mounted on a side of the connecting plate (422) away from the butt joint via an annular telescopic cylinder (423); The monitoring mechanism (42) further includes a sealing cover (425) installed on a side of the monitoring frame away from the butt joint. The sealing cover (425) includes two positioning pieces (426) respectively installed on the side walls of the support column (411). An elastic band (427) for covering the outside of the monitoring frame is provided between the two positioning pieces (426). A supporting plate (428) is provided in the middle of the elastic band (427). A positioning plate (420) is installed on the side of the supporting plate (428) close to the support piece (424).

5. The automotive aluminum alloy die-casting mold quality inspection system according to claim 1, characterized in that: A groove (413) is provided in the middle of the support column (411), and a vertical retaining bar (414) is provided in the middle of the groove (413). The vertical retaining bar (414) is flush with the side of the support column (411) close to the die-casting mold, and the width of the vertical retaining bar (414) gradually decreases towards the side close to the die-casting mold.

6. The automotive aluminum alloy die-casting mold quality inspection system according to claim 4, characterized in that: The execution unit (43) includes a displacement column (431) installed on a side of the support plate (424) away from the connecting plate (422); a return spring (432) is installed between the displacement column (431) and the support plate (428) after the displacement column (431) slides through the positioning plate (420); an electrode ring (433) is provided on one end of the displacement column (431) away from the support plate (424); and an electrode ring (434) used in conjunction with the electrode ring (433) is provided on the side of the support plate (428) close to the positioning plate (420); A branch controller (435) electrically connected to the electrode ring (434) is provided on the side wall of the positioning plate (420), and multiple branch controllers (435) in the rectangular quality inspection frame (4) are electrically connected to each other. A main controller (436) is provided at the lower end of the movable mold base plate (3), and the main controller (436) is electrically connected to the multiple branch controllers (435).

7. The automotive aluminum alloy die-casting mold quality inspection system according to claim 4, characterized in that: The marking unit (44) includes two receiving grooves (441) provided inside the connecting plate (422), a piston plate (442) being slidably provided in the receiving groove (441), a reciprocating rod (443) being installed on a side of the piston plate (442) away from the supporting plate (424), and a dyeing sponge (445) for making marks on the outer walls of the upper mold (1) and the lower mold (2) being detachably provided at one end of the reciprocating rod (443) away from the piston plate (442) via a clamping sleeve (444); Two through holes connected to the accommodating groove (441) are provided on opposite sides of the connecting plate (422) and the supporting plate (424), and a telescopic tube (446) connected to the through holes is provided between the connecting plate (422) and the supporting plate (424). Two telescopic air bags (447) connected to the through holes are installed between the supporting plate (424) and the supporting plate (428), and a supporting spring (448) is provided inside the telescopic air bag (447).

8. The automotive aluminum alloy die-casting mold quality inspection system according to claim 7, characterized in that: A supply hole (449) is provided through the middle of the reciprocating rod (443) and the piston plate (442) along the axial direction thereof. A supply pipe (450) connected to the supply hole (449) is provided on the side of the piston plate (442) away from the reciprocating rod (443). An end of the supply pipe (450) away from the piston plate (442) passes through the supporting plate (428) and is connected to a feeding pipe (451). The feeding pipe (451) is connected to multiple feeding pipes (450) on the rectangular quality inspection frame (4); A plurality of material storage boxes (452) are provided at the lower end of the movable mold base plate (3), a water pump (453) connected to the feeding pipe (451) is provided at the lower end of the material storage box (452), and a valve port for replenishing the pigment liquid is provided on the material storage box (452).

9. A method for inspecting the quality of automotive aluminum alloy die-casting molds, using the automotive aluminum alloy die-casting mold quality inspection system according to any one of claims 1 to 8, characterized in that: The inspection method includes the following steps: S1: Component adjustment: First, the upper mold (1) and the lower mold (2) are controlled to close, and the movable mold base plate (3) drives the control component (6) and the rectangular quality inspection frame (4) to move downward as a whole, so that the rectangular quality inspection frame (4) moves downward to the outside of the joint between the upper mold (1) and the lower mold (2); S2: Component preparation: driving the rectangular quality inspection frame (4) to abut against the outer wall of the joint between the upper mold (1) and the lower mold (2) through the control component (6); S3: Filling with high-pressure gas: adding high-pressure gas into the cavity between the upper mold (1) and the lower mold (2); S4: Sealing inspection: The butt joint between the upper mold (1) and the lower mold (2) is monitored through a rectangular quality inspection frame (4) to check whether there is any leakage of gas in the cavity from the butt joint, thereby inspecting the sealing of the die-casting mold and marking the locations where the die-casting mold does not meet the sealing standards.

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