Die mounting structure of horizontal sand core making machine

Abstract

The invention discloses a mold mounting structure of a horizontal sand core making machine. The mold mounting structure comprises a fixed plate, a plurality of guide columns, a movable plate, a guide rail, a sliding sleeve, a linear motion mechanism, a connecting rod, a connecting piece and a reversing driving part. When the connecting rod is in the preparation state, the connecting rod does not block the mold and does not interfere with the whole process of sand shooting of the sand shooting cylinder to the mold from the sand shooting hole. When the connecting rod is in the working state, the connecting groove of the sliding sleeve is further communicated with the guide rail, the reversing driving part enables the connecting piece to switch the state, when the connecting piece is in the connecting state, the round block and the connecting groove are only hinged, and if the linear driving part enables the sliding block to reset, the connecting rod is switched to the preparation state from the working state; and when the connecting piece is in a release state, the degree of freedom of horizontal longitudinal movement is further formed between the round block and the connecting groove, if the linear driving part enables the sliding block to reset, the connecting rod can horizontally and longitudinally move and pass through the position above the mold, and the scraper plate scrapes off precoated sand overflowing from the sand shooting hole from the top face of the mold.

Description

Technical Field

[0001] The invention relates to a sand core making machine, in particular to a mold installation structure of a horizontal sand core making machine. Background Art

[0002] The horizontal sand core making machine generally includes: a mold mounting structure for installing the mold, an oil cylinder for switching the mold between open and closed, a sand bin, a sand shooting cylinder, a second cylinder for driving the sand shooting cylinder to move horizontally between the sand bin and the mold, and a first cylinder for driving the sand shooting cylinder to press against the mold for sand shooting.

[0003] The mold mounting structure of an existing horizontal sand core making machine includes a fixed plate, multiple guide pillars, and a movable plate. A hydraulic cylinder drives the movable plate to switch the two molds between open and closed states. When the two molds are closed, a sand-shooting hole is formed on the top surface. The sand-shooting cylinder moves horizontally between the sand-shooting hole and cylinder 1. Cylinder 1 presses the sand-shooting cylinder downward until it rests against the mold, connecting the sand-shooting hole for sand-shooting. After sand-shooting is completed, cylinder 1 resets, and the sand-shooting cylinder first moves upward under the action of a spring and then moves horizontally to reset, leaving a partially overflowing coating of sand on the top surface of the mold at the location of the sand-shooting hole.

[0004] Before the mold is opened, the coated sand on the top surface needs to be scraped off. Currently, this step is usually done manually. Alternatively, a scraping mechanism consisting of a frame, scraper, and cylinder is installed outside the mold mounting structure to automatically scrape the coated sand off the top surface. However, due to the long travel distance of the scraper, the cylinder size also needs to be large, and the scraping mechanism requires a large space outside the horizontal sand core making machine. Summary of the Invention

[0005] The present application aims to provide a mold installation structure for a horizontal sand core making machine, which integrates a sand scraping structure to replace manual labor to achieve automatic sand scraping, while not requiring space to be occupied outside the horizontal sand core making machine.

[0006] In this application, a mold installation structure of a horizontal sand core making machine is provided, comprising: Fixed plate, used for mold installation; A plurality of guide pillars are arranged horizontally and one end of the guide pillars is fixedly connected to the fixed plate; A movable plate, slidably connected to a plurality of guide pillars, used for mold installation; The guide rail is horizontal and longitudinal; it is fixedly connected to the top of the movable plate; A sliding sleeve is slidably connected to one of the guide pillars and has a connecting groove on the top; The linear motion mechanism is mounted on the fixed plate and includes a slider whose movement direction is horizontal and longitudinal, and a linear drive unit for driving the sliding movement; The connecting rod has a first end hinged to the slider; the middle position is fixedly connected to the scraper; The connecting piece comprises a round block hinged to a connecting groove and a column connected to the second end of the connecting rod. The reversing driving part acts on the connecting piece. In the closed state of the mold of the fixed plate and the mold of the movable plate, the connecting rod can be switched between the following two states: a preparation state in which the sliding sleeve is close to the fixed plate and a working state in which the sliding sleeve abuts against the movable plate and the connecting groove is communicated with the guide rail. In the working state, the reversing driving part switches the connecting piece between the following two states: a connecting state in which the connecting piece cannot be separated from the connecting groove and a release state in which the connecting piece can be separated from the connecting groove and enters the guide rail.

[0007] In some embodiments, the connecting piece and the connecting rod and the connecting piece and the connecting groove also have a freedom degree of moving up and down; the connecting groove comprises a first groove in which the round block can leave and a second groove in which the round block is hinged and the round block is limited to leave; the reversing driving part is used to drive the connecting piece to move up and down.

[0008] In some embodiments, the reversing driving part comprises a spring and an electromagnet.

[0009] In some embodiments, the round block has two parallel notches; the reversing driving part is a motor used to drive the connecting piece to rotate.

[0010] In some embodiments, the scraper comprises a sleeve portion sleeved on the connecting rod and a plate body portion.

[0011] In some embodiments, the connecting rod comprises two end portions and a middle portion; the two end portions can be adjusted at fixed positions of the middle portion along the axis.

[0012] In some embodiments, the linear driving part is a gas cylinder located on the side of the fixed plate away from the movable plate; the cylinder body of the gas cylinder is hinged to the fixed plate and the piston rod is hinged to the sliding block.

[0013] In some embodiments, the gas circuit of the gas cylinder has a three-position four-way electromagnetic valve, a first sensor, a second sensor, a third sensor and a fourth sensor; the first sensor is installed on the fixed plate and triggered by the sliding sleeve; the second sensor is installed on the movable plate and triggered by the sliding sleeve; the third sensor and the fourth sensor are both installed on the fixed plate and triggered by the sliding block.

[0014] In some embodiments, the movable plate or the sliding sleeve is provided with a magnet; in the working state of the connecting rod, the magnet is used to magnetically attract the two together.

[0015] In summary, in the application, a mold mounting structure of a horizontal core making machine comprises a fixed plate, a plurality of guide columns, a movable plate, a guide rail, a sliding sleeve, a linear motion mechanism, a connecting rod, a connecting piece and a reversing driving part. In the preparation state, the connecting rod does not block the mold and does not interfere with the whole process of sand shooting from the sand shooting hole to the mold. In the working state, the connecting groove of the sliding sleeve is also communicated with the guide rail, and the reversing driving part switches the state of the connecting piece: in the connecting state, only the hinge exists between the round block and the connecting groove, and if the linear driving part resets the sliding block, the connecting rod switches from the working state to the preparation state; in the release state, the round block and the connecting groove also have the freedom of horizontal longitudinal movement, and if the linear driving part resets the sliding block, the connecting rod moves horizontally and longitudinally, passes above the mold, and the scraper scrapes the coated sand overflowing from the sand shooting hole position from the top surface of the mold. The application has the beneficial effects of compact structure, small space requirement, no interference with the work of the sand shooting cylinder, and automatic completion of the cleaning of the coated sand on the top surface of the mold. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to better clarify the technical solutions in the embodiments of the application or the background art, the drawings required to be used in the embodiments of the application or the background art will be described below.

[0017] Figure 1 is a schematic view of the sand shooting cylinder and the mold mounting structure; Figure 2 is a schematic view of the connecting rod in the preparation state of the application; Figure 3 is a schematic view of the connecting rod in the working state of the application; Figure 2 is a schematic view from another perspective; Figure 4 is a schematic view of the connecting rod in the working state of the application; Figure 5 is a schematic view of the connecting rod passing through the mold; Figure 4 is a schematic view from another perspective; Figure 6 is a schematic view of the connecting rod passing through the mold; Figure 7 is a schematic view of the connecting rod passing through the mold; Figure 6 is a schematic view from another perspective; Figure 8 is a schematic view of the sliding sleeve; Figure 9 is a partial schematic view of the connecting groove corresponding to the sliding sleeve; Figure 10 is a cross-sectional view along A-A in the connecting piece and the reversing driving part; Figure 9 is a cross-sectional view along B-B in the connecting piece and the reversing driving part; Figure 11 Figure 9 is a cross-sectional view along B-B in the connecting piece and the reversing driving part; Figure 12 is a cross-sectional view along B-B in the connecting piece and the reversing driving part; Figure 13 ​Schematic diagrams of other embodiments of connecting grooves and connecting members; Figure 14 Schematic diagrams of other embodiments of connecting rods and scrapers; Figure 15 This is a control diagram of the linear drive unit using a cylinder.

[0018] In the figure, 1. Fixed plate; 2. Guide pillar; 3. Movable plate; 3a. Magnet; 4. Guide rails; 5. Sliding sleeve; 5a. Connecting groove; 5a1. First groove; 5a2. Second groove; 5aa. First opening; 5ab. Second opening; 5ac. Third opening; 5ad. Inner top wall; 6. Linear motion mechanism; 61. Slider; 62. Linear drive unit; 621. First sensor; 622. Second sensor; 623. Third sensor; 624. Fourth sensor; 7. Connecting rod; 71. End portion; 72. Middle portion; 7a. Scraper; 7a1. Sleeve portion; 7a2. Scraper portion; 8. Connector; 81. Round block; 81a. Notch; 82. Column; 82a. Stopper; 9. Reversing drive unit; 91. Spring; 92. Electromagnet; 10. Mould; 11. Sand blasting tube. Specific embodiments

[0019] The following is further explained with reference to the accompanying drawings, which are provided for illustrative purposes only and are not drawn to scale. Unless otherwise defined, technical or scientific terms used in this disclosure should have the same ordinary meaning as those understood by persons of ordinary skill in the art to which this disclosure pertains. The terms "first," "second," and similar expressions used in this disclosure do not denote any order, quantity, or importance, but are used only to distinguish between different components. Terms such as "include" or "comprising" mean that the element or object preceding the term includes the elements or objects listed after the term, and their equivalents, without excluding other elements or objects. Terms such as "connected" or "connected" are not limited to physical or mechanical connections but may include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; if the absolute position of the described object changes, the relative positional relationship may also change accordingly. The embodiments of this application are combinable unless there is a conflict.

[0020] See also Figure 1 The mold installation structure of the existing horizontal sand core making machine includes: a fixed plate 1, a plurality of guide pillars 2, and a movable plate 3.

[0021] The fixed plate 1 is fixed relative to the equipment frame of the horizontal sand core making machine and is used for installing the mold 10.

[0022] The plurality of guide pillars 2 are horizontally arranged, and one end thereof is fixedly connected to the fixed plate 1 .

[0023] The movable plate 3 is slidably connected to the plurality of guide pillars 2. That is, the movable plate 3 is movable relative to the horizontal sand core making machine frame and moves horizontally. The movable plate 3 is used to mount the mold 10. The movable plate 3 is driven by a hydraulic cylinder to move the movable plate 3, thereby switching the two molds 10 between an open state and a closed state.

[0024] When the two molds 10 are closed, a sand-shooting hole is formed on their top surfaces (the molds 10 in the accompanying drawings are schematically shown; the hole is not shown). A horizontal sand core making machine frame is equipped with a cylinder 1 positioned directly above the hole. The horizontal sand core making machine's sand-shooting barrel 11 moves horizontally between the hole and cylinder 1. Cylinder 1 presses the barrel 11 downward until it rests against the mold 10, connecting the hole and allowing sand-shooting to proceed. After sand-shooting is complete, cylinder 1 returns to its original position. Spring 91 first moves the barrel 11 upward, and then it moves horizontally, leaving the top surface of the mold 10 partially filled with coated sand at the hole.

[0025] See also Figures 2 to 7 The mold installation structure of the horizontal sand core making machine of the present application, based on the fixed plate 1, multiple guide pillars 2, and movable plate 3, also includes: guide rails 4, sliding sleeves 5, linear motion mechanisms 6, connecting rods 7, connecting parts 8, and reversing drive parts 9.

[0026] The guide rail 4 is horizontally and longitudinally connected to the top of the movable plate 3. More specifically, the cross section of the guide rail 4 is in the shape of a convex letter, and is composed of a narrow upper groove and a wider lower groove.

[0027] The sliding sleeve 5 is slidably connected to one of the guide posts 2, meaning that the sliding sleeve 5 slides horizontally. When the two molds 10 are closed, the sliding sleeve 5 slides between the movable plate 3 and the fixed plate 1. A key can be installed on this section of the guide post 2. The travel of the key and the movable plate 3 are staggered to limit the rotation of the sliding sleeve 5 about the axis of the guide post 2. The top of the sliding sleeve 5 has a connecting groove 5a.

[0028] The linear motion mechanism 6 is mounted on the fixed plate 1. The linear motion mechanism 6 includes a slider 61 and a linear drive unit 62. The slider 61 is slidably connected to the top of the fixed plate 1 and slides in the horizontal longitudinal direction. The linear drive unit 62 is used to drive the slider 61 to slide.

[0029] The linear drive part 62 can be a rodless cylinder, the cylinder assembly is installed on the top of the fixed plate 1, and the slider 61 is directly fixedly connected to the slider assembly of the rodless cylinder.

[0030] The linear drive unit 62 may also be a screw linear module or a synchronous belt linear module.

[0031] See also Figure 3 and Figure 15 The linear drive unit 62 can also be a pneumatic cylinder (i.e., a conventional double-acting cylinder). As an actuator, the cylinder requires supporting air circuitry, a three-dimensional four-way solenoid valve, several sensors, a programmable logic controller, and so on. The cylinder is located on the side of the fixed plate 1 away from the movable plate 3. Accordingly, a linear guide 4 can be provided between the slider 61 and the fixed plate 1 to achieve a sliding connection. The cylinder body is hingedly connected to the fixed plate 1, and the cylinder piston rod is hingedly connected to the slider 61.

[0032] The components installed on the top of the fixed plate 1 are subject to the spacing restrictions of the sand-shooting tube 11 and the mold 10 in the upper and lower directions. The linear drive part 62 adopts a cylinder and is arranged on the side of the fixed plate 1 away from the movable plate 3, which is more reasonable in space and easier to set up and implement.

[0033] See also Figure 2 and Figure 3 The first end of the connecting rod 7 is hinged to the slider 61, and the second end of the connecting rod 7 is hinged to the mounting groove of the sliding sleeve 5 through the connecting member 8.

[0034] See also Figure 12 The connecting member 8 includes a round block 81 hinged to the connecting groove 5a and a column 82 connected to the second end of the connecting rod 7. Compared with the round block 81, the diameter of the column 82 is smaller.

[0035] See also Figure 2 and Figure 4 If the linear drive unit 62 drives the slider 61 and the first end of the connecting rod 7 to move horizontally and longitudinally, the sleeve 5 and the second end of the connecting rod 7 will also move horizontally and transversely. Therefore, when the mold 10 of the fixed plate 1 and the mold 10 of the movable plate 3 are closed, the connecting rod 7 can switch between the following two states: a ready state in which the sleeve 5 approaches the fixed plate 1 and an operating state in which the sleeve 5 abuts the movable plate 3.

[0036] See also Figure 2 When the connecting rod 7 is in the ready state, the angle between the connecting rod 7 and the movable plate 3 is very small. The connecting rod 7 does not block the mold 10 and does not interfere with the entire process of the sand shooting tube 11 shooting sand at the mold 10 from the sand shooting hole.

[0037] See also Figure 4 and Figure 12 When the connecting rod 7 is in working state, the connecting groove 5a of the sliding sleeve 5 is also connected to the guide rail 4.

[0038] The reversing drive unit 9 acts on the connecting member 8. When the connecting rod 7 is in the working state, the reversing drive unit 9 switches the connecting member 8 between the following two states: a connected state in which it cannot be separated from the connecting groove 5a, and a released state in which it can be separated from the connecting groove 5a and enter the guide rail 4.

[0039] That is: 1. When the connecting member 8 is in the connected state, the circular block 81 and the connecting groove 5a only have the freedom to rotate around the vertical axis. This freedom is used to achieve the hinge between the two. If the linear drive unit 62 resets the slider 61, the connecting rod 7 switches from the working state to the ready state.

[0040] 2. When connector 8 is released, the circular block 81 and connecting groove 5a still have the freedom to move horizontally and longitudinally. If the linear drive unit 62 resets the slider 61, this freedom allows circular block 81 to enter the guide rail 4 from the connecting groove 5a and slide horizontally and longitudinally along the guide rail 4, while the sleeve 5 remains stationary. In short, when connector 8 is released and the linear drive unit 62 resets the slider 61, connecting rod 7 moves horizontally and longitudinally, passing over mold 10, with the travel sufficient to cover the sandblasting holes.

[0041] Regarding the mode of action between the reversing drive unit 9 and the connecting member 8: See also Figure 12 In some implementations, the reversing drive unit 9 is used to drive the connecting member 8 to move up and down.

[0042] The connection member 8 and the connecting rod 7 also have the freedom to move up and down, that is, the height of the column 82 is greater than the thickness of the connecting rod 7, and the connection between the two remains during the up and down movement. In addition, the freedom of rotation between the column 82 and the connection member 8 about the vertical axis can be retained or restricted.

[0043] The connecting member 8 and the connecting groove 5a also have the freedom to move up and down, that is, the height of the connecting groove 5a is greater than the thickness of the round block 81, and the two remain connected during the up and down movement.

[0044] See also Figures 8 to 11 The connecting groove 5a includes a first groove 5a1 and a second groove 5a2, which are arranged one above the other. The first groove 5a1 allows the circular block 81 to exit, that is, the width of the first opening 5aa of the first groove 5a1 is equal to or greater than the diameter of the circular block 81. The second groove 5a2 is a hinged connection for the circular block 81 and restricts its exit, that is, the second groove 5a2 is circular and matches the circular block 81.

[0045] If the first slot 5a1 is on the top, the second slot 5a2 is on the bottom, the second slot 5a2 can not have the second opening 5ab. If the first slot 5a1 is on the bottom, the second slot 5a2 is on the top, the second slot 5a2 needs to have the second opening 5ab, the second opening 5ab width is less than the diameter of the round block 81, and also greater than the diameter of the cylinder 82, so that the cylinder 82 can be away.

[0046] Further, the reversing driving part 9 can include: a spring 91, an electromagnet 92. The spring 91 is used to keep the round block 81 in one of the first slot 5a1 and the second slot 5a2, and the electromagnet 92 is used to overcome the spring 91 to make the round block 81 enter the other one of the first slot 5a1 and the second slot 5a2.

[0047] Please refer to Figures 8 to 12 , more specifically, the connecting slot 5a is that the first slot 5a1 is on the bottom and the second slot 5a2 is on the top. Correspondingly, the cylinder 82 penetrates out of the electromagnet 92 (the electromagnet 92 adopts a ring shape), and the upper end of the cylinder 82 is fixedly connected with a stop block 82a, and the bottom surface of the stop block 82a has a receiving groove. The spring 91 is a compression spring 91, which is sleeved on the cylinder 82, and the lower end abuts against the top surface of the electromagnet 92, and the upper end abuts against the inner top wall of the receiving groove. The spring 91 keeps the round block 81 in the second slot 5a2, which can be that the spring 91 makes the round block 81 abut against the inner top wall 5ad of the second slot 5a2. The electromagnet 92 is energized, the bottom surface of the stop block 82a is adsorbed to the electromagnet 92, the spring 91 after further compression is in the receiving groove, and the round block 81 enters the first slot 5a1 downward.

[0048] Please refer to Figure 13 , in some embodiments, the round block 81 has two parallel notches 81a, that is, the two notches 81a form two vertical faces on the round block 81, so that the round block 81 is similar to a strip. The reversing driving part 9 is a motor for driving the connecting piece 8 to rotate. That is, the connecting slot 5a is a circle matched with the round block 81, has a third opening 5ac, and the third opening 5ac width is less than the diameter of the round block 81, and also equal to or slightly greater than the distance between the two vertical faces.

[0049] The round block 81 is rotated, and only when the round block 81 is aligned with the second opening 5ab, the round block 81 is away from the connecting slot 5a.

[0050] Please refer to Figure 2 and Figure 4 , the middle position of the connecting rod 7 is also fixedly connected with a scraper 7a. The scraper 7a can adopt a wooden board.

[0051] Screws can be used to fixedly connect the scraper 7a to the top surface of the connecting rod 7.

[0052] Please refer to Figure 14The scraper 7a can also be designed to include: a sleeve portion 7a1 and a plate portion. The sleeve portion 7a1 is sleeved on the connecting rod 7, that is, the middle of the connecting rod 7 needs to be a cylindrical section, and the rotation of the sleeve portion 7a1 relative to the connecting rod 7 is restricted by tightening the screw.

[0053] By rotating the sleeve portion 7a1, the height of the bottom edge of the plate portion can be adjusted to better fit the mold 10 and contact the top surface of the mold 10.

[0054] See also Figure 4 and Figure 6 During the process of "the connecting rod 7 moving horizontally and longitudinally and passing over the mold 10," the scraper 7a also passes through the sand-shooting holes, scraping the coating sand overflowing from the top surface of the mold 10. In addition, when the mold 10 is mounted on the fixed plate 1, the top surface of the mold 10 should be flush with or slightly higher than the fixed plate 1, so that there will be no interference between the scraper 7a and the fixed plate 1.

[0055] See also Figure 2 , the connecting rod 7 can be integrated.

[0056] See also Figure 14 The connecting rod 7 may further include two end portions 71 and a middle portion 72. Accordingly, the two end portions 71 are used to connect to the sleeve 5 and the slider 61, while the middle portion 72 is used to connect to the scraper 7a. Both end portions 71 can be adjusted along the axis to a fixed position within the middle portion 72. More specifically, the end surfaces of both end portions 71 have a socket and a gap. The two sides of the gap are connected by screws. The middle portion 72 is inserted into the socket, and the screws are tightened to tighten the two sides of the gap and secure the middle portion 72.

[0057] When the mold 10 is replaced and the horizontal dimension changes, the corresponding position of the movable plate 3 in the closed state of the mold 10 also changes accordingly. The length of the connecting rod 7 can be changed to adapt so that the connecting rod 7 is in a suitable state in the working state.

[0058] Initially, the connecting rod 7 is in a ready state. Here is a brief description of the working process of the sand core making machine: S1, the two molds 10 are in a closed state, and sand shooting is performed; after the sand shooting is completed, the sand shooting cylinder 11 is reset (a sensor is set to generate a signal X0), and the top surface of the mold 10 is partially filled with coated sand at the position of the sand shooting hole; S2, please refer to Figures 2 to 5 , the linear drive portion 62 moves, the connecting rod 7 switches from the ready state to the working state, and switches the connecting rod 7 from being retracted to being extended; S3, the reversing drive unit 9 moves, and the connecting member 8 switches from the connected state to the released state; S4. Please refer to Figures 4 to 7The linear drive unit 62 moves in the opposite direction to that in S2. The connecting member 8 leaves the sliding sleeve 5 and enters the guide rail 4. The connecting rod 7 moves horizontally and longitudinally, passing over the mold 10. The scraper 7a scrapes the coating sand overflowing from the sand shooting hole position from the top surface of the mold 10. S5, the linear drive unit 62 moves in the same direction as in S2, and the connecting member 8 leaves the guide rail 4 and re-enters the sliding sleeve 5; S6, the reversing drive unit 9 moves, and the connecting member 8 switches from the released state to the connected state; S7, the linear drive unit 62 moves in the opposite direction to that in S2, and the connecting rod 7 switches from the working state to the ready state; S8, the two molds 10 are switched from a closed state to an open state, and the sand cores are taken out; S9, repeat the above S1-S8.

[0059] In some embodiments, the movable plate 3 or the sliding sleeve 5 is provided with a magnet 3a. When the connecting rod 7 is in the working state, the magnet 3a is used to magnetically attract the two together.

[0060] Between S4 and S5 , the magnet 3 a keeps the sliding sleeve 5 stably in the position against the movable plate 3 .

[0061] In combination with the above-mentioned "linear drive part 62 is a cylinder", "the reversing drive part 9 includes: a spring 91, an electromagnet 92", and "the connecting groove 5a is the first groove 5a1 at the bottom and the second groove 5a2 at the top", the air circuit of the cylinder has a three-position four-way solenoid valve, a first sensor 621, a second sensor 622, a third sensor 623, and a fourth sensor 624.

[0062] Second sensor 622 is mounted on movable plate 3 and triggered by sleeve 5. Specifically, in step S2, the magnet on the second side of the three-position, four-way solenoid valve is energized, the cylinder piston rod extends, and sleeve 5 approaches movable plate 3, pressing against it while triggering second sensor 622 to input a signal to the PLC: electromagnet 92 is energized (completing the subsequent step S3), the magnet on the second side of the three-position, four-way solenoid valve is first de-energized, the three-position, four-way solenoid valve switches to the middle position, and the cylinder piston rod remains stationary (providing time to complete step S3). Then, the magnet on the first side of the three-position, four-way solenoid valve is energized after a delay, causing the cylinder piston rod to retract (completing the subsequent step S4).

[0063] Third sensor 623 is mounted on fixed plate 1 and triggered by slider 61. Specifically, in step S4, the first magnet on the three-position, four-way solenoid valve is energized, the cylinder piston rod retracts, sleeve 5 and slider 61 move together, and slider 61 triggers third sensor 623 to input a signal to the PLC: the three-position, four-way solenoid valve switches from energizing the first magnet to energizing the second magnet (completing the subsequent step S5), and electromagnet 92 is de-energized. (At this point, electromagnet 92 is de-energized, and disc 81 remains within guide rail 4. After step S5 is completed, the spring 91 forces disc 81 into first slot 5a1, completing step S6.)

[0064] Fourth sensor 624 is mounted on fixed plate 1 and triggered by slider 61. Specifically, in S5, the magnet on the second side of the three-position, four-way solenoid valve is energized, causing the cylinder piston rod to extend. Sleeve 5 and slider 61 move together, triggering slider 61 to trigger fourth sensor 624 to input a signal to the PLC: the magnet on the second side of the three-position, four-way solenoid valve first loses power, the three-position, four-way solenoid valve switches to the middle position, and the cylinder piston rod remains stationary (providing time to complete step S6). After a delay, the magnet on the first side of the three-position, four-way solenoid valve is energized, causing the cylinder piston rod to retract (completing the subsequent step S7).

[0065] First sensor 621 is mounted on fixed plate 1 and is triggered by sleeve 5. Specifically, in S7, the magnet on the first side of the three-position, four-way solenoid valve is energized, the cylinder piston rod retracts, and sleeve 5 approaches fixed plate 1, triggering first sensor 621 to input a signal to the PLC: the magnet on the first side of the three-position, four-way solenoid valve switches to the neutral position, the cylinder piston rod remains stationary, and connecting rod 7 reaches the ready state.

[0066] When the mold 10 is replaced and the horizontal and lateral dimensions change, the corresponding position of the movable plate 3 in the closed state of the mold 10 also changes accordingly, and the position of the second sensor 622 will automatically change accordingly, and the positions of the third sensor 623 and the fourth sensor 624 will be adjusted in the horizontal and vertical directions to adapt.

[0067] In addition, it can be found that after S2 is completed, the fourth sensor 624 is also triggered, but it cannot be triggered at this time. It can be set using the third sensor 623 and the first sensor 621. The third sensor 623 is set to maintain the circuit control signal M0. The first sensor 621 is connected to the normally closed switch in the maintenance circuit. The fourth sensor 624 is connected to the normally open switch and the signal M0 is connected in series to control the signal M1. Signal M1 participates in controlling the three-dimensional four-way solenoid valve.

Claims

1. A mold installation structure for a horizontal sand core making machine, characterized in that: include: A fixing plate (1) for mounting the mold (10); A plurality of guide pillars (2) are arranged horizontally and one end of the guide pillars is fixedly connected to the fixed plate (1); A movable plate (3) is slidably connected to the plurality of guide pillars (2) and is used for installing the mold (10); The guide rail (4) is horizontal and longitudinal; it is fixedly connected to the top of the movable plate (3); A sliding sleeve (5) is slidably connected to one of the guide pillars (2); The top portion is provided with a connection groove (5a); A linear motion mechanism (6) is mounted on a fixed plate (1); it comprises a slider (61) whose motion direction is horizontal and longitudinal, and a linear drive unit (62) for driving the sliding motion; The connecting rod (7) has a first end hinged to the slider (61); a scraper (7a) is fixedly connected to the middle position; The connecting member (8) comprises: a round block (81) hinged to the connecting groove (5a), and a column (82) connected to the second end of the connecting rod (7); A reversing drive unit (9) acts on the connecting member (8); When the mold (10) of the fixed plate (1) and the mold (10) of the movable plate (3) are in a closed state, the connecting rod (7) can switch between the following two states: a ready state in which the sliding sleeve (5) is close to the fixed plate (1), and a working state in which the sliding sleeve (5) is against the movable plate (3) and the connecting groove (5a) is connected to the guide rail (4); When the connecting rod (7) is in the working state, the reversing drive unit (9) switches the connecting member (8) between the following two states: a connected state in which it cannot be separated from the connecting groove (5a) and a released state in which it can be separated from the connecting groove (5a) and enter the guide rail (4).

2. The mold installation structure of a horizontal sand core making machine according to claim 1, characterized in that: There is also freedom of upward and downward movement between the connecting member (8) and the connecting rod (7), and between the connecting member (8) and the connecting groove (5a); the connecting groove (5a) comprises a first groove (5a1) capable of allowing the round block (81) to leave, and a second groove (5a2) for the round block (81) to be hinged and restricting the round block (81) from leaving; and the reversing drive portion (9) is used to drive the connecting member (8) to move upward and downward.

3. The mold installation structure of a horizontal sand core making machine according to claim 2, characterized in that: The reversing drive unit (9) includes a spring (91) and an electromagnet (92).

4. The mold installation structure of a horizontal sand core making machine according to claim 1, characterized in that: The round block (81) has two parallel notches (81a); the reversing drive unit (9) is a motor, which is used to drive the connecting member (8) to rotate.

5. The mold installation structure of a horizontal sand core making machine according to claim 1, characterized in that: The scraper (7a) comprises a sleeve portion (7a1) sleeved on the connecting rod (7) and a plate portion.

6. The mold installation structure of a horizontal sand core making machine according to claim 1, characterized in that: The connecting rod (7) comprises two end parts (71) and a middle part (72); the two end parts (71) can be adjusted along the axis to a fixed position of the middle part (72).

7. The mold installation structure of a horizontal sand core making machine according to claim 1, characterized in that: The linear drive part (62) is a cylinder located on the side of the fixed plate (1) away from the movable plate (3); the cylinder body of the cylinder is hinged to the fixed plate (1), and the piston rod is hinged to the slider (61).

8. The mold installation structure of a horizontal sand core making machine according to claim 7, characterized in that: The air circuit of the air cylinder comprises a three-position four-way solenoid valve, a first sensor (621), a second sensor (622), a third sensor (623), and a fourth sensor (624); the first sensor (621) is mounted on the fixed plate (1) and is triggered by the sliding sleeve (5); the second sensor (622) is mounted on the movable plate (3) and is triggered by the sliding sleeve (5); the third sensor (623) and the fourth sensor (624) are both mounted on the fixed plate (1) and are triggered by the sliding block (61).

9. The mold installation structure of a horizontal sand core making machine according to claim 1, characterized in that: The movable plate (3) or the sliding sleeve (5) is provided with a magnet (3a); when the connecting rod (7) is in a working state, the magnet (3a) is used to magnetically attract the two together.

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