Sprue bush detection device for die-casting die

Abstract

The sprue bush detection device comprises a frame, an air cylinder fixed to the center of the top of the frame, a pressing plate arranged on the lower end wall of the top of the frame and in transmission with the air cylinder and a supporting table installed at the bottom of the frame, a screw is installed at the bottom of the pressing plate, and the lower end of the pressing plate is in threaded connection with a detection head through the screw. And the screw rod is selectively connected with the six end surfaces of the detection head. The sprue bush detection device for the die-casting die has the beneficial effects that six end faces including the fixed block, the lower block, the two second convex blocks and the two first convex blocks are selectively in contact with the end wall of the sprue bush, the areas of the end faces of the fixed block, the lower block, the two second convex blocks and the two first convex blocks are sequentially reduced, and when each end face is selected to be in contact with the end wall of the sprue bush, the sprue bush can be conveniently detected. The sprue bush end wall detection device has different pressure intensities and detection ranges, so that the end wall detection nodes of the sprue bush can be large or small, the detection effect is richer, and the sprue bush end wall detection device can be matched with sprue bushes of different sizes for detection.

Description

Technical Field

[0001] The invention relates to the technical field of die casting mold sprue sleeve detection, in particular to a sprue sleeve detection device for a die casting mold. Background Art

[0002] Die casting is the abbreviation of pressure casting. It is a method of obtaining castings by filling the die cavity of the die casting mold with liquid or semi-liquid metal at high speed under high pressure and rapidly solidifying it under pressure. The die casting mold used is called a die casting mold. The die casting mold will be equipped with a sprue sleeve. After the sprue sleeve is processed, it will be tested. Among them, the detection device will be used to detect the impact resistance of the sprue sleeve.

[0003] When testing the impact resistance of the gate sleeve of a die-casting mold, the gate sleeve is generally placed on the table of a testing device, and the cylinder on the testing device is used to drive the testing bump downward to impact the end wall of the gate sleeve to generate vibrations, and observe whether the gate sleeve is broken or damaged, so as to test the impact resistance of the gate sleeve. However, due to the simple structure of the conventional testing device, the testing bump driven by the cylinder is rectangular or circular, and only a single end face of the bump with a fixed size and area can be used to contact the gate sleeve. When in contact, the pressure and detection range generated on the gate sleeve are the same, and it is impossible to select and switch the area of ​​the testing bump, so that the pressure and detection range generated on the contact surface with the gate sleeve are different, and to test the impact resistance of different nodes on the gate sleeve, resulting in poor testing results. Summary of the invention

[0004] The purpose of the present invention is to provide a gate sleeve detection device for a die-casting mold, so as to solve the problem proposed in the above background technology that when testing the impact resistance of the gate sleeve of the die-casting mold, the gate sleeve is generally placed on the table of the detection device, and the cylinder on the detection device is used to drive the detection protrusion to move downward to impact the end wall of the gate sleeve to generate vibration, observe whether the gate sleeve is broken or damaged, and detect the impact resistance of the gate sleeve. However, since the conventional detection device has a simple structure, the detection protrusion driven by the cylinder is rectangular or circular, and only a single fixed size and area of ​​the protrusion can be used to contact the gate sleeve. The pressure and detection range generated on the gate sleeve during contact are the same, and the area of ​​the detection protrusion cannot be selected and switched, so that the pressure and detection range generated on the contact surface with the gate sleeve are different, and the impact resistance of different nodes on the gate sleeve is detected, resulting in poor detection effect.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a sprue sleeve detection device for a die-casting mold, comprising a frame, a cylinder fixed at the center of the top of the frame, a pressure plate arranged at the lower end wall of the top of the frame and driven by the cylinder, and a support platform installed at the bottom of the frame, a screw is installed at the bottom of the pressure plate, and a detection head is threadedly connected to the lower end of the pressure plate through the screw, and the screw can selectively connect six end faces of the detection head so that the left, right, front and back, and upper and lower end walls of the detection head can be selectively placed in a downward position, and under the drive of the cylinder, the six end faces of the detection head can contact the end wall of the sprue sleeve, and the upper end of the support platform A material plate for placing a gate sleeve is installed, and the upper end wall of the material plate is provided with plate cavities equidistantly and in a ring shape. A plate hole is vertically penetrated through the middle of the material plate near the plate cavity, and a plate plug is detachably installed on the inner side of the plate hole through a threaded connection, and a plug block is arranged on the upper end of the plate plug. A column is installed in the middle of the upper end of the material plate, and a rotating shaft rotatably connected to the frame is arranged on the top end wall of the column for rotating the column and the material plate, and a screw for screwing the rear limit material plate is penetrated through the side end wall of the frame, and a sliding seat is movably connected to the side end of the column, and a ruler for measuring the size of the gate sleeve is installed on the side end of the sliding seat.

[0006] Preferably, the detection head includes a solid block installed at the lower end of the screw, a middle block arranged at the lower end of the solid block, a lower block installed at the lower end of the middle block, and a convex piece arranged opposite to the side end of the middle block. A vertical hole is vertically penetrated through the middle of the solid block, the middle block and the lower block for threaded connection with the screw, so that the solid block or the lower block is connected and tightly attached to the bottom end wall of the pressure plate. At the same time, the end faces of the solid block and the lower block have different areas, and the end faces of the solid block and the lower block are both larger than the end face of the convex piece.

[0007] Preferably, the protrusion includes a first protrusion arranged opposite to the end wall of the middle block and a second protrusion arranged on the end wall of the middle block corresponding to the first protrusion, the first protrusion and the middle block are provided with a first transverse hole, the second protrusion and the middle block are provided with a second transverse hole, the first transverse hole and the second transverse hole are both used for threaded connection with the screw, so that the four end faces of the middle block can be selectively connected to the bottom end wall of the pressure plate through the screw.

[0008] Preferably, the solid block and the lower block are both cylindrical, and the middle block is rectangular.

[0009] Preferably, two of the first and second bumps are provided, and the first and second bumps are relatively arranged at the center of the rectangular side surface of the middle block, and the area of ​​the end face of the first bump is smaller than the area of ​​the end face of the second bump, the areas of the two first bump end faces are different, and the areas of the two second bump end faces are different.

[0010] Preferably, the vertical hole, the first transverse hole and the second transverse hole are all connected, and the vertical hole, the first transverse hole and the second transverse hole are all perpendicular to each other.

[0011] Preferably, the plate plug and the plug block are fixedly connected, and the size of the plate plug is larger than that of the plug block, so that when the plate plug is screwed upward in the plate hole, the small-sized plug block moves upward and is lifted up in the bottom hole of the gate sleeve.

[0012] Preferably, the slide seat slides along the vertical direction of the column, so that the scale is displaced and pressed against the upper end wall of the sprue sleeve.

[0013] Preferably, two columns are provided, and scale marks are inlaid on the end walls of the columns.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The present invention uses the scale marks embedded in the end wall of the column to observe the position of the ruler shifting and sticking to the upper end wall of the gate sleeve when the slide seat moves downward, so as to obtain the height dimension of the gate sleeve, and observe the scale marks on the ruler to obtain the radial dimension of the upper end surface of the gate sleeve. After the detection is completed, the above operation is repeated, and the height dimension and the radial dimension of the upper end surface of the gate sleeve are detected again, and compared with the first detection data. By observing whether the size parameters are the same, it is determined whether the gate sleeve is deformed after the impact resistance test, and further, the impact resistance of the gate sleeve can be understood more accurately.

[0016] 2. The present invention can rotate the four plate cavities on the material plate in turn to the position directly below the detection head at the pressure plate, so that the detection head is pressed against the upper end surface of the gate sleeve when the cylinder moves downward, and is used to detect the resistance of the gate sleeve. During the detection, the positions of the four plate cavities are rotated and switched, so that the four plate cavities are alternately moved to the position directly below the detection head in turn for detection, which facilitates the rapid switching of the gate sleeve. During the detection, the screws can be screwed to limit and stabilize the material plate that needs to be detected.

[0017] 3. The present invention has a total of six end faces, namely a solid block, a lower block, two second protrusions and two first protrusions, which can be selectively contacted with the end wall of the gate sleeve, and the end face areas of the solid block, the lower block, the two second protrusions and the two first protrusions decrease successively. When each end face is selected to contact with the end wall of the gate sleeve, it has a different pressure and detection range, so that the end wall detection node of the gate sleeve can be large or small, the detection effect is richer, and it can also be adapted to gate sleeves of different sizes for detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a sprue sleeve detection device for a die-casting mold according to the present invention;

[0019] Figure 2 It is a schematic diagram of a plan view of a material plate of a sprue bushing detection device for a die-casting mold according to the present invention;

[0020] Figure 3It is a schematic diagram of the structure of a material plate of a sprue sleeve detection device for a die-casting mold according to the present invention when viewed from above;

[0021] Figure 4 It is a schematic diagram of the actual structure of a solid block, a middle block and a lower block of a sprue bushing detection device for a die-casting mold according to the present invention;

[0022] Figure 5 The present invention is a schematic diagram of the explosion structure of a screw and a solid block of a sprue sleeve detection device for a die-casting mold.

[0023] In the figure: 1. frame; 2. cylinder; 3. pressure plate; 4. screw; 5. solid block; 6. middle block; 7. lower block; 8. vertical hole; 9. first protrusion; 10. first transverse hole; 11. second protrusion; 12. second transverse hole; 13. rotating shaft; 14. column; 15. slide seat; 16. ruler; 17. screw; 18. support table; 19. material plate; 20. plate cavity; 21. plate hole; 22. plate plug; 23. plug block. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0025] In the description of the present invention, unless otherwise specified, "plurality" means two or more than two; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] See also Figure 1-5The present invention provides a technical solution: a gate sleeve detection device for a die-casting mold, comprising a frame 1, a cylinder 2 fixed at the top center of the frame 1, a pressure plate 3 arranged at the top lower end wall of the frame 1 and driving the cylinder 2, and a support platform 18 installed at the bottom of the frame 1, a material plate 19 for placing the gate sleeve is installed on the upper end of the support platform 18, and a plate cavity 20 is equidistantly and annularly provided on the upper end wall of the material plate 19. Preferably, four plate cavities 20 are arranged in annular shape for classifying and placing four gate sleeves, and a plate hole 21 is vertically penetrated near the middle of the plate cavity 20 of the material plate 19, and a plate plug 22 is detachably installed on the inner side of the plate hole 21 through a threaded connection, and a plug block 23 is arranged on the upper end of the plate plug 22, and the plate plug 22 and the plug block 23 are fixedly connected. And the size of the plate plug 22 is larger than that of the plug block 23. When the plate plug 22 is screwed up in the plate hole 21, the small-sized plug block 23 moves up and is lifted up in the bottom hole of the gate sleeve. The plate plug 22 is pushed in the bottom hole of the gate sleeve to simply limit the gate sleeve. When the gate sleeve is detected and impacted, the gate sleeve can be relatively stable. After the plate plug 22 is rotated and removed from the plate hole 21, the plate hole 21 is opened. At this time, the dust and debris generated by placing the gate sleeve and detecting in the plate cavity 20 can be discharged from the plate hole 21, which has the effect of cleaning the material discharge for detection. A column 14 is installed in the middle of the upper end of the material plate 19, and the top wall of the column 14 is provided with a rotating shaft 13 rotatably connected to the frame 1, which is used to rotate the column 14 and the material plate 19, the four plate cavities 20 on the material plate 19 can be rotated in turn to the position directly below the detection head at the pressure plate 3, so that the detection head is pressed on the upper end surface of the gate sleeve when the cylinder 2 is conveyed and moved downward, which is used to detect the resistance of the gate sleeve. During the detection, the positions of the four plate cavities 20 are rotated and switched, so that the four plate cavities 20 are alternately moved to the position directly below the detection head in turn for detection, which is convenient for quickly switching the gate sleeve. The side end wall of the frame 1 is penetrated with a screw 17 for screwing the rear limit material plate 19. During the detection, the screw 17 can be screwed to limit and stabilize the material plate 19 that needs to be detected. The side end of the column 14 is movably sleeved with a slide seat 15, and the side end of the slide seat 15 is installed with a ruler 16 for measuring the size of the gate sleeve. During the detection, the slide seat 15 moves along the vertical direction of the column 14. Slide in the vertical direction to displace the ruler 16 and make it close to the upper end wall of the sprue sleeve. Two columns 14 are provided, and the end wall of the column 14 is inlaid with scale marks. Through the scale marks inlaid on the end wall of the column 14, observe the position of the ruler 16 displaced and close to the upper end wall of the sprue sleeve when the slide seat 15 moves down, obtain the height dimension of the sprue sleeve, and observe the scale marks on the ruler 16 to obtain the radial dimension of the upper end face of the sprue sleeve. After the inspection is completed, repeat the above operation, detect the height dimension and the radial dimension of the upper end face of the sprue sleeve again, and compare them with the first inspection data. By observing whether the size parameters are the same, it is judged whether the sprue sleeve is deformed after the impact resistance test, and further, more accurately understand the impact resistance of the sprue sleeve.

[0028] A screw rod 4 is installed at the bottom of the pressing plate 3, and a detection head is threadedly connected to the lower end of the pressing plate 3 through the screw rod 4. The screw rod 4 can selectively connect the six end faces of the detection head, so that the left, right, front and back, and upper and lower end walls of the detection head can be selectively placed in a downward position. Under the drive of the cylinder 2, the six end faces of the detection head can all contact the end wall of the sprue bushing;

[0029] The detection head includes a solid block 5 installed at the lower end of the screw 4, a middle block 6 arranged at the lower end of the solid block 5, a lower block 7 installed at the lower end of the middle block 6, and a convex piece arranged opposite to the side end of the middle block 6. A vertical hole 8 is vertically penetrated in the middle of the solid block 5, the middle block 6 and the lower block 7, which is used for threaded connection with the screw 4, so that the solid block 5 or the lower block 7 is connected and tightly attached to the bottom end wall of the pressure plate 3. At the same time, the end faces of the solid block 5 and the lower block 7 have different areas, and the end faces of the solid block 5 and the lower block 7 are both larger than the end face of the convex piece. The solid block 5 and the lower block 7 are both cylindrical, and the middle block 6 is rectangular. By manually rotating the solid block 5, the middle block 6 or the lower block 7, the screw 4 is screwed into the vertical hole 8, so that the solid block 5 or the lower block 7 is tightly attached. The lower end wall of the pressing plate 3 is attached. When a relatively small pressure and a relatively large range need to be detected, the lower block 7 is selected to be in close contact with the pressing plate 3, so that the solid block 5 with a relatively large end surface area faces the lower end. After the solid block 5 moves downward, the solid block 5 contacts the sprue sleeve, and the contact surface is large, and the pressure generated is small. This is useful for detecting the impact resistance of the sprue sleeve in a relatively large range. When a relatively large pressure and a relatively small range need to be detected, the solid block 5 is selected to be in close contact with the pressing plate 3, so that the lower block 7 with a relatively small end surface area faces the lower end. After the solid block 5 moves downward, the lower block 7 contacts the sprue sleeve, and the contact surface is small, and the pressure generated is large. This is useful for detecting the impact resistance of the sprue sleeve in a relatively small range. The detection effect is better, the selectivity is stronger, and the resistance of each node on the end surface of the sprue sleeve is detected.

[0030] A first transverse hole 10 is provided through the middle block 6, and a second transverse hole 12 is provided through the second protrusion 11 and the middle block 6. The vertical hole 8, the first transverse hole 10, and the second transverse hole 12 are all connected, and the vertical holes 8, the first transverse hole 10, and the second transverse hole 12 are all perpendicular to each other. The first transverse hole 10 and the second transverse hole 12 are both used for threaded connection with the screw rod 4, so that the four end faces of the middle block 6 can be selectively connected to the bottom end wall of the pressing plate 3 through the screw rod 4, and the two ports of the first transverse hole 10 are respectively connected to the screw rod 4, and the two ports of the second transverse hole 12 are respectively connected to the screw rod 4, so that the protrusion can be selectively assembled at the bottom of the pressing plate 3 from four different directions, so that the four end faces of the protrusion can be selectively downward, and then the four end faces of the protrusion can be selectively selected to contact with the gate sleeve, so that the protrusion can be used in more diverse ways;

[0031] Two first protrusions 9 and two second protrusions 11 are provided, and the first protrusions 9 and the second protrusions 11 are relatively arranged at the center of the rectangular side surface of the middle block 6, and the area of ​​the end surface of the first protrusion 9 is smaller than the area of ​​the end surface of the second protrusion 11, the areas of the end surfaces of the two first protrusions 9 are different, and the areas of the end surfaces of the two second protrusions 11 are different. By selecting one end surface of the two first protrusions 9 to be assembled at the end wall of the pressing plate 3, the other end surfaces of the two first protrusions 9 are facing downward and can contact the end wall of the gate sleeve. Similarly, by selecting one end surface of the two second protrusions 11 to be assembled at the end wall of the pressing plate 3, the other end surfaces of the two second protrusions 11 are facing downward and can contact the end wall of the gate sleeve. There are four ways of assembling with the pressing plate 3, and the four ways The four end faces of the protrusion, i.e., the two end faces of the first protrusion 9 and the two end faces of the second protrusion 11, can be selectively facing downward and in contact with the end wall of the gate sleeve, wherein the end faces of the two first protrusions 9 are the smallest, and the end face of one of the first protrusions 9 is larger than the end face of the other first protrusion 9, while the end faces of the two second protrusions 11 are larger than the end faces of the first protrusions 9 but smaller than the end faces of the lower block 7. The end face areas of the solid block 5, the lower block 7, the two second protrusions 11, and the two first protrusions 9 decrease in sequence. When each end face is selected to contact the end wall of the gate sleeve, it has a different pressure and detection range, so that the end wall detection node of the gate sleeve can be large or small, the detection effect is richer, and it can also be adapted to gate sleeves of different sizes for detection.

[0032] In summary, the gate sleeve detection device for the die-casting mold, when in use, the four plate cavities 20 on the material plate 19 can be rotated in turn to the position directly below the detection head at the pressure plate 3, so that the detection head is pressed on the upper end surface of the gate sleeve when the cylinder 2 is conveyed and moved downward, which is used to detect the resistance of the gate sleeve. During the detection, the positions of the four plate cavities 20 are rotated and switched, so that the four plate cavities 20 are alternately moved to the position directly below the detection head in turn for detection, which is convenient for quickly switching the gate sleeve. During the detection, the screw 17 can be screwed to limit and stabilize the material plate 19 that needs to be detected. The plate plug 22 is pressed against the bottom hole of the gate sleeve to simply limit the position of the gate sleeve, so that when the gate sleeve is detected and impacted, the gate sleeve can be relatively stable, and after the plate plug 22 is rotated and removed from the plate hole 21, the plate The hole 21 is opened. At this time, the dust and debris generated by placing the gate sleeve and testing in the plate cavity 20 can be discharged from the plate hole 21, which plays the effect of material discharge and cleaning for testing. Through the scale mark embedded in the end wall of the column 14, observe that when the slide 15 moves down, the ruler 16 moves and sticks to the position of the upper end wall of the gate sleeve, obtain the height dimension of the gate sleeve, and observe the scale mark on the ruler 16 to obtain the radial dimension of the upper end face of the gate sleeve. After the test is completed, repeat the above operation, detect the height dimension and the radial dimension of the upper end face of the gate sleeve again, and compare them with the first test data. By observing whether the size parameters are the same, it is judged whether the gate sleeve is deformed after the impact resistance test, and further, more accurately understand the impact resistance of the gate sleeve.

[0033] The two ends of the first transverse hole 10 are connected to the screw 4 respectively, and the two ends of the second transverse hole 12 are connected to the screw 4 respectively, so that the convex piece can be selectively assembled at the bottom of the pressing plate 3 from four different directions, so that the four end faces of the convex piece can be selectively facing downward, and then the four end faces of the convex piece can be selectively selected to contact the gate sleeve, so that the convex piece can be used in more ways. By manually rotating the solid block 5, the middle block 6 or the lower block 7, the screw 4 is screwed into the vertical hole 8, so that the solid block 5 or the lower block 7 is close to the lower end wall of the pressing plate 3. When it is necessary to detect a smaller pressure and a larger range, When the solid block 5 is moved downward, the solid block 5 contacts the sprue bushing, and the contact surface is large, the pressure generated is small, and the impact resistance of the sprue bushing in a large range is detected. When a large pressure and a small range need to be detected, the solid block 5 is selected to be in close contact with the pressure plate 3, so that the lower block 7 with a smaller end surface area faces the lower block 7. After the solid block 5 moves downward, the solid block 5 contacts the sprue bushing, and the contact surface is small, the pressure generated is large, and the impact resistance of the sprue bushing in a small range is detected. The detection effect is better, the selectivity is stronger, and the various end surfaces of the sprue bushing need to be detected. The resistance of each node is achieved by selecting one end face of the two first protrusions 9 to be assembled at the end wall of the pressing plate 3 so that the other end faces of the two first protrusions 9 face downward and can contact the end wall of the gate sleeve. Similarly, one end face of the two second protrusions 11 is selected to be assembled at the end wall of the pressing plate 3 so that the other end faces of the two second protrusions 11 face downward and can contact the end wall of the gate sleeve. There are four ways of assembling with the pressing plate 3. The four ways can make the four end faces of the protrusions, that is, the two end faces of the first protrusion 9 and the two end faces of the second protrusion 11, selectively face downward and contact the end wall of the gate sleeve. Contact, wherein the end faces of the two first protrusions 9 are the smallest, and the end face of one of the first protrusions 9 is larger than the end face of the other first protrusion 9, and the end faces of the two second protrusions 11 are larger than the end faces of the first protrusions 9, but smaller than the end face of the lower block 7, the end face areas of the solid block 5, the lower block 7, the two second protrusions 11, and the two first protrusions 9 decrease in sequence, and when each end face is selected to contact the end wall of the gate sleeve, it has a different pressure and detection range, so that the end wall detection node of the gate sleeve can be large or small, the detection effect is richer, and it can also be adapted to gate sleeves of different sizes for detection.

[0034] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A sprue bushing detection device for a die casting mold, comprising a frame (1), a cylinder (2) fixed at the center of the top of the frame (1), a pressing plate (3) arranged at the lower end wall of the top of the frame (1) and driving the cylinder (2), and a support platform (18) installed at the bottom of the frame (1), characterized in that: A screw rod (4) is installed at the bottom of the pressing plate (3), and a detection head is threadedly connected to the lower end of the pressing plate (3) through the screw rod (4). The screw rod (4) can selectively connect the six end faces of the detection head, so that the left, right, front and back, and upper and lower end walls of the detection head can be selectively placed in a downward position. Under the drive of the cylinder (2), the six end faces of the detection head can contact the end wall of the gate sleeve. A material plate (19) for placing the gate sleeve is installed at the upper end of the support platform (18). Plate cavities (20) are equidistantly and annularly opened on the upper end wall of the material plate (19). A plate hole (21) is vertically penetrated through the middle of the plate cavity (20) of the material plate (19). A plate plug (22) is detachably installed on the inner side of the plate hole (21) through a threaded connection, and a plug block (23) is arranged on the upper end of the plate plug (22). A column (14) is installed in the middle of the upper end of the material plate (19). The top end wall of the column (14) is provided with a rotating shaft (13) rotatably connected to the frame (1) for rotating the column (14) and the material plate (19). The side end wall of the frame (1) is penetrated by a screw (17) for screwing the rear limit material plate (19). The side end of the column (14) is movably sleeved with a slide seat (15), and the side end of the slide seat (15) is provided with a ruler (16) for measuring the size of the gate sleeve.

2. A sprue bushing detection device for a die casting mold according to claim 1, characterized in that: The detection head comprises a solid block (5) mounted at the lower end of the screw rod (4), a middle block (6) arranged at the lower end of the solid block (5), a lower block (7) mounted at the lower end of the middle block (6), and a convex piece arranged opposite to the side end of the middle block (6); a vertical hole (8) is vertically penetrated through the middle of the solid block (5), the middle block (6) and the lower block (7) for threaded connection with the screw rod (4) so ​​that the solid block (5) or the lower block (7) is connected and tightly attached to the bottom end wall of the pressure plate (3); and the end surfaces of the solid block (5) and the lower block (7) have different areas, and the end surfaces of the solid block (5) and the lower block (7) are both larger than the end surface of the convex piece.

3. A sprue bushing detection device for a die casting mold according to claim 2, characterized in that: The protrusion comprises a first protrusion (9) arranged opposite to the end wall of the middle block (6) and a second protrusion (11) arranged on the end wall of the middle block (6) corresponding to the first protrusion (9); a first transverse hole (10) is provided through the first protrusion (9) and the middle block (6); a second transverse hole (12) is provided through the second protrusion (11) and the middle block (6); the first transverse hole (10) and the second transverse hole (12) are both used for threaded connection with the screw rod (4), so that the four end faces of the middle block (6) can be selectively connected to the bottom end wall of the pressure plate (3) through the screw rod (4).

4. A sprue bushing detection device for a die casting mold according to claim 2, characterized in that: The solid block (5) and the lower block (7) are both cylindrical, while the middle block (6) is rectangular.

5. A sprue bushing detection device for a die casting mold according to claim 4, characterized in that: Two of the first convex blocks (9) and the second convex blocks (11) are provided, and the first convex blocks (9) and the second convex blocks (11) are relatively arranged at the center of the rectangular side surface of the middle block (6), and the area of ​​the end surface of the first convex block (9) is smaller than the area of ​​the end surface of the second convex block (11), the areas of the end surfaces of the two first convex blocks (9) are different, and the areas of the end surfaces of the two second convex blocks (11) are different.

6. A sprue bushing detection device for a die casting mold according to claim 2, characterized in that: The vertical hole (8), the first transverse hole (10), and the second transverse hole (12) are all connected, and the vertical hole (8), the first transverse hole (10), and the second transverse hole (12) are all perpendicular to each other.

7. A sprue bushing detection device for a die casting mold according to claim 1, characterized in that: The plate plug (22) and the plug block (23) are fixedly connected, and the size of the plate plug (22) is larger than that of the plug block (23), so that when the plate plug (22) is screwed upward in the plate hole (21), the small-sized plug block (23) moves upward and is lifted up in the hole cavity at the bottom of the sprue sleeve.

8. A sprue bushing detection device for a die casting mold according to claim 1, characterized in that: The slide seat (15) slides along the vertical direction of the column (14), so that the scale (16) is displaced and closely attached to the upper end wall of the sprue sleeve.

9. A sprue bushing detection device for a die casting mold according to claim 1, characterized in that: Two upright posts (14) are provided, and scale marks are inlaid on the end walls of the upright posts (14).

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