Sand shooting cylinder mounting structure of vertical sand core making machine

Abstract

The utility model relates to a sand core making machine, and discloses a sand shooting barrel mounting structure of a vertical sand core making machine, which comprises a first mounting part, a second mounting part, a third mounting part, a switching part, an air cylinder, a first spring, a connecting block, a pull rod and a second spring. The stop block keeps limiting the connecting block through the second spring, so that the connecting block is fixed relative to the switching part, the piston rod of the air cylinder extends out to normally drive the switching part, and the third mounting part extends out. And when the switching part and the third mounting part extend to a proper position, the pull rod is pulled to overcome the second spring, so that the stop block releases the limiting of the connecting block, and meanwhile, the second mounting part is magnetically attracted by utilizing magnetism to overcome the second spring, so that the stop block keeps releasing the limiting of the connecting block. The piston rod of the air cylinder continues to extend out, and the switching part and the third mounting part stop, namely the switching part and the third mounting part can be stopped when the sand shooting barrel is close to the mold without changing the stroke limit of the air cylinder. The device has the advantages of being simple in structure, convenient to operate and wide in application range.

Description

Technical Field

[0001] This utility model relates to a sand core making machine, and particularly to a sand-shooting cylinder installation structure for a vertical sand core making machine. Background Technology

[0002] For vertical sand core making machines, the upper and lower molds form a sand injection hole after they are closed. The sand injection cylinder is brought close to the mold so that the sand injection nozzle of the cylinder enters the sand injection hole. Because changes in the size and structure of the mold will cause changes in the position of the sand injection hole, the sand injection cylinder must also be adjustable vertically and horizontally relative to the equipment frame to ensure that the sand injection cylinder is aligned with the sand injection hole horizontally. For current vertical sand core making machines, a sand injection cylinder mounting structure is set between the sand injection cylinder and the equipment frame to achieve adjustment.

[0003] The sand-shooting cylinder mounting structure includes: a first mounting part that can be adjusted vertically relative to the equipment frame; a second mounting part that can be adjusted horizontally relative to the first mounting part; a third mounting part that can extend and retract horizontally relative to the second mounting part; a transition part that is horizontally slidably connected to the third mounting part; a cylinder disposed between the transition part and the second mounting part; and a first spring that keeps the transition part close to the cylinder limit position. The sand-shooting cylinder is mounted on the third mounting part, the first mounting part is adjusted vertically accordingly, and the second mounting part is adjusted horizontally. The sand-shooting nozzle is first inserted into the sand-shooting hole, and then the sand-shooting cylinder abuts against the mold, preventing the sand-shooting cylinder and the third mounting part from extending further. The cylinder piston rod and the transition part continue to extend a short distance, compressing the first spring. In this way, the position of the sand-shooting hole is accommodated to change horizontally.

[0004] Before adjusting the position of the injection nozzle vertically and horizontally, it is generally necessary to move the injection cylinder horizontally closer to the mold to minimize the distance between the injection nozzle and the injection hole, thus allowing for more accurate adjustment of the injection nozzle. Currently, the horizontal movement of the injection cylinder is controlled by a cylinder. Adjusting the cylinder's stroke limit changes the position of the injection cylinder between the injection nozzle entering the injection hole and the injection nozzle approaching the injection hole, which is very cumbersome and inconvenient to operate. Utility Model Content

[0005] This application provides a sand-shooting cylinder installation structure for a vertical sand core making machine, which can solve the problems mentioned in the background art.

[0006] This application provides a sand-shooting cylinder mounting structure for a vertical sand core making machine, including: a first mounting part that can be adjusted vertically relative to the equipment frame; a second mounting part that can be adjusted horizontally relative to the first mounting part; a third mounting part that can be horizontally extended and retracted relative to the second mounting part; a transition part that is horizontally slidably connected to the third mounting part; a cylinder disposed between the transition part and the second mounting part; and a first spring that keeps the transition part near the cylinder limit position; the transition part further includes: a first guide groove that is horizontally extended and through which the cylinder piston rod passes, and a second guide groove that is horizontally extended and communicates with the first guide groove; and further includes:

[0007] The connecting block is located in the first guide groove and is fixedly connected to the piston rod of the connecting cylinder.

[0008] A pull rod is slidably connected to the second guide groove; a stop is fixedly provided near the first guide groove and a magnet is fixedly provided away from the first guide groove.

[0009] The second spring is used to: keep the stop block in a limited position that blocks the connecting block and fixes the connecting block relative to the adapter; and keep the magnet in a separated position that is separated from the second mounting part.

[0010] When the magnet is attracted to the second mounting part, it can overcome the second spring, release the stop block from limiting the connecting block, and allow the connecting block to move in the direction of the cylinder piston rod extension.

[0011] In some embodiments, when the third mounting part is in the retracted limit position, the magnet cannot magnetically attract the corresponding position of the second mounting part.

[0012] In some embodiments, the height of the stop block in the vertical direction is greater than the height of the first guide groove in the vertical direction; the inner top wall and inner bottom wall of the first guide groove both have limiting grooves for the stop block to enter.

[0013] In some embodiments, the adapter includes: a first portion having a first guide groove and a second portion having a second guide groove; the second portion is detachably connected to the first portion.

[0014] In some embodiments, the pull rod is stepped, with the smaller diameter section being a threaded section for the stop block and magnet to be fixedly connected.

[0015] In some embodiments, the pull rod includes: a first rod body for mounting a magnet and a stop, and a second rod body detachably connected to the first rod body.

[0016] In summary, this application discloses a sand-shooting cylinder installation structure for a vertical sand core making machine, comprising: a first mounting part, a second mounting part, a third mounting part, a transition part, a cylinder, a first spring, a connecting block, a pull rod, and a second spring. The second spring keeps the stop block in a limiting position on the connecting block, thus fixing the connecting block relative to the transition part. When the cylinder piston rod extends, it normally drives the transition part and the third mounting part to extend. When the transition part and the third mounting part extend to the appropriate position, the pull rod is pulled, overcoming the second spring and releasing the stop block from limiting the connecting block. Simultaneously, the second mounting part is magnetically attracted, overcoming the second spring and keeping the stop block in a freed position. The cylinder piston rod continues to extend, while the transition part and the third mounting part stop, thus maintaining the cylinder's stroke limit and ensuring that the transition part and the third mounting part stop when the sand-shooting cylinder approaches the mold. Advantages include: simple structure, convenient operation, and wide applicability. Attached Figure Description

[0017] To better illustrate the technical solutions in the embodiments of this application or the background art, the accompanying drawings used in the embodiments of this application or the background art will be described below.

[0018] Figure 1 This is a front view of the application, the equipment frame, and the sand-shooting cylinder;

[0019] Figure 2 This is a connection diagram of the second and third mounting sections;

[0020] Figure 3 for Figure 2 Sectional view along the middle AA;

[0021] Figure 4 for Figure 3 An enlarged schematic diagram of part A in the middle;

[0022] Figure 5 Front views of the second and third mounting sections;

[0023] Figure 6 for Figure 5 A sectional view along the middle edge BB;

[0024] Figure 7 The front view of the third mounting part extending a certain distance relative to the second mounting part;

[0025] Figure 8 for Figure 7 A sectional view along the center CC;

[0026] Figure 9 This is a schematic diagram of the cylinder installation at the second mounting part;

[0027] Figure 10 This is a schematic diagram showing the arrangement between the mounting block, adapter, and tie rod.

[0028] In the picture,

[0029] 1. First mounting section; 1a. First guide post; 1b. Lifting screw mechanism;

[0030] 2. Second mounting section; 2a. Lead screw module; 2b. Oval through groove; 2c. Block;

[0031] 3. Third mounting section; 3a. Mounting block;

[0032] 4. Adapter; 41. First part; 42. Second part; 4a. Second guide post; 4b. First guide groove; 4b1. Limiting groove; 4c. Second guide groove; 4c1. Partition;

[0033] 5. Cylinder;

[0034] 6. The first spring;

[0035] 7. Connecting block;

[0036] 8. Pull rod; 81. First rod body; 82. Second rod body; 8a. Threaded section; 8b. Stop block; 8c. Magnet;

[0037] 9. The second spring;

[0038] 10. Equipment frame; 11. Sand-shooting cylinder; 11a. Sand-shooting nozzle. Specific Implementation

[0039] The following description is provided in conjunction with the accompanying drawings, which are for illustrative purposes only and not strictly to scale. Unless otherwise defined, the technical or scientific terms used in this disclosure should be understood in their ordinary sense by one of ordinary skill in the art to which this disclosure pertains. The terms "first," "second," and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described object changes. Unless otherwise specified, the embodiments in this application can be combined with each other.

[0040] Please see Figure 1A sand-shooting cylinder installation structure for a vertical sand core making machine includes: a first mounting part 1, a second mounting part 2, a third mounting part 3, a connecting part 4, a cylinder 5, a first spring 6, a connecting block 7, a pull rod 8, and a second spring 9.

[0041] The first mounting part 1 can be adjusted vertically relative to the equipment frame 10 of the vertical sand core making machine (the equipment frame 10 is only represented by the table surface in the attached drawing for ease of illustration).

[0042] Multiple first guide posts 1a can be fixedly mounted on the bottom surface of the first mounting part 1, and these first guide posts 1a are slidably connected to the equipment frame 10. A lifting screw mechanism 1b can be provided between the first mounting part 1 and the equipment frame 10 to drive the first mounting part 1 to move up and down. More specifically, the lifting screw mechanism 1b is a screw rotation type, with the screw and hand crank rotatably connected to the outer shell. A worm gear is provided between the screw and the hand crank to reduce the rotation. The outer shell is fixedly connected to the bottom surface of the first mounting part 1, and the screw nut matching the screw is fixedly connected to the equipment frame 10.

[0043] The second mounting part 2 can be adjusted in position relative to the first mounting part 1 along the horizontal longitudinal direction.

[0044] The top surface of the first mounting part 1 and the bottom surface of the second mounting part 2 may be provided with matching limiting grooves and limiting protrusions to achieve horizontal longitudinal sliding. A lead screw module 2a may be provided between the first mounting part 1 and the second mounting part 2 to drive the second mounting part 2 to move horizontally longitudinally.

[0045] Please see Figure 2 The third mounting part 3 can extend and retract horizontally relative to the second mounting part 2.

[0046] Referring to the first mounting part 1 and the second mounting part 2, the top surface of the second mounting part 2 and the bottom surface of the third mounting part 3 can be provided with matching limiting grooves and limiting protrusions to achieve horizontal sliding. The top surface of the third mounting part 3 is used for mounting the sand-shooting cylinder 11. The sand-shooting port 11a of the sand-shooting cylinder 11 is on the horizontal side and approaches the mold as the third mounting part 3 extends out.

[0047] The adapter 4 is slidably connected to the third mounting part 3 along the horizontal direction.

[0048] Referring to the first mounting part 1 and the second mounting part 2, the top surface of the adapter part 4 and the bottom surface of the third mounting part 3 can be provided with matching limiting grooves and limiting protrusions to achieve horizontal sliding.

[0049] The cylinder 5 is located between the adapter 4 and the second mounting part 2. That is, the cylinder body of the cylinder 5 is mounted on the second mounting part 2, and the piston rod of the cylinder 5 is connected to the adapter 4. The specific connection method needs to be combined with the subsequent connecting block 7, pull rod 8, etc.

[0050] Please see Figure 3 and Figure 10 The first spring 6 is used to keep the adapter 4 in a position close to the cylinder 5. The first spring can be configured as follows: the bottom surface of the third mounting part 3 is fixed with a mounting block 3a; the adapter 4 is fixed with two second guide posts 4a, the second guide posts 4a protruding from the mounting block 3a and having a larger diameter at the protruding end; the first spring 6 is a set of two compression springs, respectively fitted onto the two second guide posts 4a; the first spring 6 is located between the adapter 4 and the mounting block 3a, and under the action of the first spring 6, the protruding end of the second guide post 4a remains against the mounting block 3a.

[0051] Please see Figure 3 , Figure 6 and Figure 10 The adapter 4 also has: a first guide groove 4b and a second guide groove 4c.

[0052] The first guide groove 4b is horizontal, and the piston rod of the cylinder 5 passes through the first guide groove 4b, that is, the inner vertical wall of the first guide groove 4b near the cylinder 5 has a through hole.

[0053] The second guide groove 4c is horizontal and longitudinal, and the second guide groove 4c is also connected to the first guide groove 4b.

[0054] In some embodiments, the adapter 4 includes a first portion 41 and a second portion 42. The second portion 42 is detachably connected to the first portion 41. A first guide groove 4b is disposed in the first portion 41, and a second guide groove 4c is disposed in the second portion 42.

[0055] The adapter 4 is designed to be split, which makes it easier to assemble the connecting block 7, the pull rod 8, and the second spring 9 in the adapter 4.

[0056] The connecting block 7 is located in the first guide groove 4b. The connecting block 7 is fixedly connected to the piston rod of the connecting cylinder 5. The fixed connection method can be: the connecting block 7 is inserted into the piston rod, and the two are fixedly connected by a set of fasteners.

[0057] Please see Figure 5 , Figure 6 , Figure 7 and Figure 8 The pull rod 8 is slidably connected to the second guide groove 4c, meaning that the sliding direction of the pull rod 8 is horizontal and longitudinal. A stop 8b is fixedly provided on the pull rod 8 near the first guide groove 4b, and a magnet 8c is fixedly provided on the pull rod 8 away from the first guide groove 4b.

[0058] In some embodiments, the pull rod 8 is stepped, with the smaller diameter section being a threaded section 8a, which is used for the fixed connection of the stop block 8b and the magnet 8c.

[0059] Magnet 8c is fitted into threaded section 8a, with one side abutting against the shaft shoulder. A nut is threadedly connected to threaded section 8a, and the magnet 8c is fixed by pressing against it from the other side. Stop 8b is fitted into threaded section 8a, with two nuts threadedly connected to threaded section 8a. The stop 8b is fixed by pressing against it from both sides.

[0060] The second spring 9 is used to keep the stop block 8b in a limited position, blocking the connecting block 7 and fixing the connecting block 7 relative to the adapter 4. That is, in the horizontal direction, one side of the stop block 8b is attached to the inner vertical wall of the first guide groove 4b near the cylinder 5, and the other side is attached to the stop block 8b.

[0061] The second spring 9 is also used to keep the magnet 8c separated from the second mounting part 2. That is, the adapter part 4 is made of a suitable material. If the adapter part 4 is made of the above-mentioned material, which includes a first part 41 and a second part 42, then only the second part 42 is made of a suitable material so that the magnet 8c will not be magnetically attracted to the adapter part 4.

[0062] The second spring 9 can be configured as follows: a partition 4c1 is fixed inside the second guide groove 4c, and the pull rod 8 passes through the partition 4c1; the magnet 8c and the stop block 8b are respectively located on both sides of the partition 4c1 (the stop block 8b and the magnet 8c are both attached to the inner wall of the second guide groove 4c to achieve a sliding connection between the pull rod 8 and the second guide groove 4c); the second spring 9 is a compression spring and is sleeved on the pull rod 8; the second spring 9 is located between the partition 4c1 and the stop block 8b, and under the action of the second spring 9, the magnet 8c remains against the partition 4c1.

[0063] In addition, with the baffle as the dividing line, the size of the second guide groove 4c on both sides of the baffle can be different, so that the size of the magnet 8c and the stop block 8b can also be different.

[0064] The lever 8 can be pulled manually by overcoming the action of the second spring 9. Correspondingly, the end of the lever 8 away from the adapter 4 passes through the second mounting part 2, that is, the second mounting part 2 is provided with an oblong through groove 2b for the lever 8 to pass through and move.

[0065] Please see Figure 10 In some embodiments, the pull rod 8 includes a first rod body 81 and a second rod body 82. The first rod body 81 is used for mounting the magnet 8c and the stop 8b. The second rod body 82 is detachably connected to the first rod body 81, and may be connected by a threaded connection.

[0066] The assembly process is more convenient: first install the first rod 81, magnet 8c, stop block 8b, adapter 4, and third mounting part 3. The first rod 81 does not interfere with the third mounting part 3 and is connected to the second mounting part 2 horizontally. Then, the second rod 82 passes through the waist-shaped through groove 2b and is connected to the first rod 81.

[0067] Pulling the lever causes the magnet 8c and the stop block 8b to move horizontally and longitudinally together until the magnet 8c abuts against and is magnetically attracted to the second mounting part 2. At this time, the stop block 8b releases its restriction on the connecting block 7.

[0068] After magnet 8c is attracted to the second mounting part 2, it can overcome the second spring 9. That is, by selecting a magnet 8c with suitable magnetism and a second spring 9 with suitable parameters, after magnet 8c is attracted to the second mounting part 2, the pull rod 8 is released, and magnet 8c remains attracted to the second mounting part 2. Correspondingly, the stop block 8b also remains released from limiting the connecting block 7, allowing the connecting block 7 to move in the direction of the piston rod of cylinder 5.

[0069] When the mold of the vertical sand core making machine is changed, the position of the sand injection cylinder 11 needs to be adjusted through the sand injection cylinder mounting structure. Initially, the third mounting part 3 is in the retracted limit position, the stop block 8b is in the limit position, and the magnet 8c is in the separated position.

[0070] The upper and lower molds close to form a sand injection hole;

[0071] The piston rod of cylinder 5 extends out, and the adapter 4, the third mounting part 3, and the sand-shooting cylinder 11 extend out together, close to the sand-shooting hole;

[0072] When the sand-shooting cylinder 11 and the sand-shooting hole are close, the pull rod 8 is pulled, the magnet 8c switches from the separated state to magnetically attract the second mounting part 2, and the stop block 8b releases the limit on the connecting block 7; the piston rod of the cylinder 5 and the connecting block 7 continue to extend to the stroke limit and then stop, while the adapter part 4, the third mounting part 3 and the sand-shooting cylinder 11 remain stationary.

[0073] The position of the sand-shooting cylinder 11 is adjusted up and down by the lifting screw mechanism 1b, and the position of the sand-shooting cylinder 11 is adjusted horizontally and longitudinally by the screw module 2a, so that the sand-shooting port 11a of the sand-shooting cylinder 11 is aligned with the sand-shooting hole in the horizontal direction.

[0074] When the piston rod of cylinder 5 retracts, the connecting block 7 abuts against the inner vertical wall of cylinder 5 near the first guide groove 4b, which will drive the adapter 4, the third mounting part 3, and the sand-shooting cylinder 11 to retract together.

[0075] After the adapter 4, the third mounting part 3, and the sand-shooting cylinder 11 retract to the retraction limit, manually overcome the magnet 8c to reset the pull rod 8, the stop block 8b returns to the limit state, and the magnet 8c returns to the separated state.

[0076] When the piston rod of cylinder 5 extends, the adapter 4, the third mounting part 3, and the sand-shooting cylinder 11 also extend together. During this process, the sand-shooting port 11a is first inserted into the sand-shooting hole. Then the sand-shooting cylinder 11 presses against the mold, so that the sand-shooting cylinder 11 and the third mounting part 3 no longer extend. The piston rod of cylinder 5 and the adapter 4 continue to extend a section, compressing the first spring 6. In this way, the position of the sand-shooting hole changes in the horizontal direction.

[0077] Please see Figure 9 In some embodiments, when the third mounting part 3 is in the retracted limit position, the magnet 8c cannot magnetically attract the corresponding position of the second mounting part 2. More specifically, a through groove can be machined at this position of the second mounting part 2 according to the size of the magnet 8c, and a block 2c of a corresponding material can be fixedly connected in the through groove.

[0078] After the adapter 4, the third mounting part 3, and the sand-shooting cylinder 11 retract to the retraction limit, it is no longer necessary to overcome the magnet 8c to reset the pull rod 8. The magnet 8c can no longer magnetize the block 2c, the magnetic force disappears, and the pull rod 8 automatically resets under the action of the second spring 9.

[0079] Please see Figure 3 , Figure 4 and Figure 10 In some embodiments, the height of the stop 8b in the vertical direction is greater than the height of the first guide groove 4b in the vertical direction. The inner top wall and inner bottom wall of the first guide groove 4b both have limiting grooves 4b1 for the stop 8b to enter.

[0080] When the piston rod of cylinder 5 extends through the limiting groove 4b1 and the connecting block 7 abuts against the stop block 8b, the stop block 8b will be supported by the inner wall of the limiting groove 4b1, so the pull rod 8 will not be subjected to bending moment and will be more stable.

Claims

1. A sand-shooting cylinder installation structure for a vertical sand core making machine, comprising: The device comprises a first mounting part (1) that can be adjusted vertically relative to the equipment frame (10), a second mounting part (2) that can be adjusted horizontally relative to the first mounting part (1), a third mounting part (3) that can be extended horizontally relative to the second mounting part (2), a transition part (4) that is horizontally slidably connected to the third mounting part (3), a cylinder (5) disposed between the transition part (4) and the second mounting part (2), and a first spring (6) that holds the transition part (4) near the limit of the cylinder (5); characterized in that the transition part (4) further comprises: a first guide groove (4b) that is horizontally transverse and into which the piston rod of the cylinder (5) passes, and a second guide groove (4c) that is horizontally longitudinal and communicates with the first guide groove (4b); and further comprises: The connecting block (7) is located in the first guide groove (4b) and is fixedly connected to the piston rod of the connecting cylinder (5). A pull rod (8) is slidably connected to the second guide groove (4c); a stop block (8b) is fixed near the first guide groove (4b), and a magnet (8c) is fixed away from the first guide groove (4b); The second spring (9) is used to: keep the stop (8b) in a limited position that blocks the connecting block (7) and fixes the connecting block (7) relative to the adapter (4), and keep the magnet (8c) in a separated position that is separated from the second mounting part (2). When the magnet (8c) is attracted to the second mounting part (2), it can overcome the second spring (9) and release the stop (8b) from limiting the connecting block (7), so that the connecting block (7) can move in the direction of the piston rod of the cylinder (5).

2. The sand-shooting cylinder installation structure of a vertical sand core making machine according to claim 1, characterized in that, When the third mounting part (3) is in the retracted limit position, the magnet (8c) cannot magnetically attract the corresponding position of the second mounting part (2).

3. The sand-shooting cylinder installation structure of a vertical sand core making machine according to claim 1, characterized in that, The height of the stop block (8b) in the vertical direction is greater than the height of the first guide groove (4b) in the vertical direction; the inner top wall and inner bottom wall of the first guide groove (4b) both have limiting grooves (4b1) for the stop block (8b) to enter.

4. The sand-shooting cylinder installation structure of a vertical sand core making machine according to claim 1, characterized in that, The adapter (4) includes: a first part (41) having a first guide groove (4b) and a second part (42) having a second guide groove (4c); the second part (42) is detachably connected to the first part (41).

5. The sand-shooting cylinder installation structure of a vertical sand core making machine according to claim 1, characterized in that, The pull rod (8) is stepped, with the smaller diameter section being the threaded section (8a), which is used to fix the stop block (8b) and magnet (8c).

6. The sand-shooting cylinder installation structure of a vertical sand core making machine according to claim 1, characterized in that, The lever (8) includes: a first rod (81) for mounting a magnet (8c) and a stop (8b), and a second rod (82) detachably connected to the first rod (81).

Images