Sand box molding compacting device

Abstract

The application relates to the technical field of foundry production, and discloses a sand box molding and compacting device, which comprises a base and a compacting cylinder, the front and rear sides of the base are respectively provided with vibration pressing assemblies for molding upper and lower sand boxes, the vibration pressing assemblies comprise reciprocating vibration seats which are slid up and down on the two sides of the base, the two vibration seats are respectively fixedly connected with the compacting cylinder, the base is provided with a linkage assembly for driving the two vibration seats to synchronously act, the vibration seat is provided with a positioning assembly fixedly connected with the base, when the wedge-shaped seat is in the middle position, the positioning assembly is triggered to act for positioning operation, and when the wedge-shaped seat is not in the middle position, the positioning operation of the positioning assembly is released. The molding operation of the upper and lower sand boxes can be concentrated on the same device, the occupied area of the device is reduced, the device can be used in a space-limited place, the production cost is saved, and the use efficiency of the device is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of foundry production, in particular to a sand box molding and compacting device. BACKGROUND

[0002] Sand casting is the most traditional and widely used metal casting method, which uses sand mold as the casting material and is suitable for the forming of various metals such as iron, steel, aluminum and copper. The core process is to form a cavity in the sand mold through a wooden or metal model, then pour molten metal, and obtain the casting after cooling.

[0003] The existing sand box molding is usually carried out by two separate shock pressure molding machines. Each shock pressure molding machine generally includes a base, a shock pressure cylinder, a compacting cylinder, an upper mold plate, a lower mold plate, a top rod mechanism and the like. Moreover, the shock pressure cylinder and the compacting cylinder are designed in an integrated manner (i.e., the compacting cylinder is placed at the lowermost position, and the piston cylinder of the compacting cylinder is the cylinder body of the shock pressure cylinder, the piston of the shock pressure cylinder is connected in the piston cylinder of the compacting cylinder, and the bearing seat is connected on the top surface of the piston of the shock pressure cylinder, and the upper mold plate or the lower mold plate is connected on the bearing seat).

[0004] In the above operation, the sand box molding is carried out by two separate shock pressure molding machines, which cannot be concentrated in the same device, resulting in a large occupied area and being not suitable for space-limited places. Moreover, the integrated design of the shock pressure cylinder and the compacting cylinder not only causes the complexity of the internal structure, but also puts forward higher requirements for the gas path control, thereby increasing the production cost. SUMMARY

[0005] The technical problem to be solved by the present application is to overcome the above difficulties and provide a sand box molding and compacting device.

[0006] To solve the above technical problems, the technical scheme provided by the present application is as follows: a sand box molding and compacting device, comprising a base and a compacting cylinder, the base is provided with a shock pressure assembly for molding the upper sand box and the lower sand box on the front and rear sides respectively, the shock pressure assembly comprises a vibration seat reciprocatingly arranged on the base on the upper and lower sides, the compacting cylinder is fixedly connected on the two vibration seats respectively, and the base is provided with a linkage assembly for driving the two vibration seats to move synchronously;

[0007] The linkage assembly comprises a rotating disc rotatingly arranged on the base at the middle part between the two vibration seats, a slide column rotatingly arranged at the eccentric position of the rotating disc, a driving slide groove in sliding cooperation with the slide column, guide rods in sliding cooperation with the base fixedly arranged at the two ends of the driving slide groove, a wedge-shaped seat one fixedly arranged at the other end of the guide rod, and a matching seat one fixedly arranged at the two ends of the wedge-shaped seat one on the vibration seat and matched with the wedge-shaped seat one.

[0008] The vibration seat is provided with a positioning assembly fixedly connected with the base. When the wedge-shaped seat one is in the middle position, the positioning assembly is triggered to perform positioning operation. When the wedge-shaped seat one is not in the middle position, the positioning assembly is released from the positioning operation.

[0009] As an improvement, the positioning assembly comprises a fixed cylinder fixedly arranged on the base and surrounding the vibration seat. The vibration seat is internally hollow and has a lifting rod sliding up and down arranged at the center position. The lifting rod is slidingly provided with a wedge-shaped seat two. A plurality of moving rods with elastic function are equidistantly arranged in the circumferential direction of the vibration seat. Each moving rod is provided with a positioning seat abutting against the inner wall of the fixed cylinder at the outer end and a matching seat two adapted to the wedge-shaped seat two at the inner end. The bottom surface of the lifting rod is provided with a mounting bracket, and a roller is rotatably arranged on the mounting bracket. The top surface of the wedge-shaped seat one is fixedly provided with a convex seat pushing the roller. A return spring one is fixedly arranged between the wedge-shaped seat two and the bottom wall of the compaction cylinder.

[0010] The wedge-shaped seat two is fixedly provided with a fixing assembly fixedly connected with the lifting rod. When the wedge-shaped seat two moves downward to be close to the bottom wall of the vibration seat, the fixing assembly is triggered to release the positioning of the lifting rod.

[0011] As an improvement, the fixing assembly comprises a mounting groove arranged on the bottom surface of the wedge-shaped seat two and avoiding the lifting rod. The central position of the wedge-shaped seat two is provided with a seat body penetrating the lifting rod. A positioning pin with elastic function is arranged in the seat body. The lifting rod is provided with a pin hole for the positioning pin to insert. A frame body is fixedly arranged on the outer side surface of the positioning pin, and a wedge-shaped block is arranged on the inner wall of the frame body. A telescopic rod is fixedly arranged on the bottom wall of the vibration seat. The movable end of the telescopic rod is fixedly provided with a matching block adapted to the wedge-shaped block.

[0012] As an improvement, the telescopic rod comprises a cylinder fixedly arranged on the bottom wall of the vibration seat. An active rod with elastic function is arranged in the cylinder. An electromagnet is fixedly arranged on the bottom surface of the active rod, and a matching block is fixedly connected to the top surface. A coil matched with the electromagnet is arranged in the cylinder. An electromagnet head is further arranged to supply power to the coil.

[0013] As an improvement, the bottom surface of the wedge-shaped seat two and the bottom wall of the vibration seat are respectively provided with a magnet one and a magnet two matched with each other.

[0014] As an improvement, the base is respectively provided with an inverted U-shaped bracket at both ends of the vibration seat. A sliding rod fixedly connected with the vibration seat is slidingly arranged in the U-shaped bracket. A return spring two is arranged around the sliding rod.

[0015] As an improvement, a plurality of support rods fixedly connected with the base are equidistantly arranged on the bottom surface of the fixed cylinder in the circumferential direction. A plurality of extension seats supporting the vibration seat are arranged on the bottom surface of the fixed cylinder. A guide column fixedly connected with the vibration seat is slidingly arranged in the extension seat.

[0016] The beneficial effects of the present application compared with the prior art are:

[0017] 1. The front and rear sides of the base are respectively provided with vibration pressing assemblies, and the vibration operations of the two vibration pressing assemblies are synchronously controlled through the linkage assembly, so that the molding operations on the upper sand box and the lower sand box can be concentrated on the same device, the floor area of the device is reduced, the use in space-limited places is met, the complexity of the structure when controlling the vibration operations of the two vibration pressing assemblies is simplified, and the production cost of the device is reduced.

[0018] 2. Under the actions of the turntable, the slide column, the driving sliding groove, the guide rod, the wedge-shaped seat one and the matching seat one, the two ends of the vibration seat can be driven to perform synchronous up-down reciprocating vibration actions in the process of the rotation of the turntable, and the compaction air cylinder is driven to perform up-down reciprocating vibration actions, so that the convenience of the vibration operation of the two ends of the vibration seat is improved.

[0019] 3. Under the actions of the positioning assembly and the triggering of the positioning assembly when the wedge-shaped seat one is in the middle position, the vibration seat and the compaction air cylinder can be fixedly connected to the base, so that the stability effect is achieved in the process of the extension and retraction of the compaction air cylinder, and the operation of the positioning assembly is conveniently and quickly operated.

[0020] 4. Under the actions of the fixing assembly and the release of the positioning assembly, the triggering operation of the positioning assembly can be released in the process of the up-down reciprocating vibration of the vibration seat, so that the convenience of the operation of the device is improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a structural schematic view of the present application.

[0022] Figure 2 is a partial structural schematic view of the present application.

[0023] Figure 3 is a structural schematic view of the linkage assembly in the present application.

[0024] Figure 4 is a partial internal structure of the present application Figure 1 .

[0025] Figure 5 is a structural schematic view of the positioning assembly in the present application.

[0026] Figure 6 is a partial internal structure of the present application Figure 2 .

[0027] Figure 7 is an enlarged view of A in the present application Figure 6 .

[0028] Figure 8 is the internal structure diagram of the telescopic rod in the application.

[0029] Figure 9 is a partial structure schematic diagram of the application.

[0030] As shown in the figure: 1, base; 111, U-shaped frame; 112, slide bar; 113, reset spring two; 114, support rod; 115, extension seat; 116, guide column; 2, compaction cylinder; 3, jolt assembly; 311, jolt seat; 4, linkage assembly; 411, turntable; 412, slide column; 413, drive sliding groove; 414, guide rod; 415, wedge seat one; 416, matching seat one; 5, positioning assembly; 510, fixed cylinder; 511, lifting rod; 512, wedge seat two; 513, moving rod; 514, positioning seat; 515, matching seat two; 516, mounting frame; 517, roller; 518, convex seat; 519, reset spring one; 6, fixing assembly; 611, mounting groove; 612, seat body; 613, positioning pin; 614, frame body; 615, wedge block; 616, telescopic rod; 6161, cylinder body; 6162, movable rod; 6163, electromagnet; 6164, coil; 6165, electromagnetic head; 711, support frame; 712, swing seat; 713, pressing head. DETAILED DESCRIPTION

[0031] The application will be further described in detail below with reference to the accompanying drawings.

[0032] Combined with the accompanying drawings Figure 1 , the accompanying drawings Figure 2 , the accompanying drawings Figure 3 , the accompanying drawings Figure 4 , and the accompanying drawings Figure 5 As shown in the figure, a sand box molding compaction device includes a base 1 and a compaction cylinder 2, the base 1 is provided with a jolt assembly 3 for molding an upper sand box and a lower sand box on the front and rear sides, respectively, the jolt assembly 3 includes reciprocating jolt seats 311 which are arranged on the two sides of the base 1 to slide up and down, the two jolt seats 311 are fixedly connected with the compaction cylinders 2, respectively, the extension actions of the two compaction cylinders 2 are synchronously arranged, the piston top surfaces of the two compaction cylinders 2 are respectively provided with bearing seats, the two bearing seats are respectively provided with a pair of upper and lower mold plates (belonging to the prior art) which are used in pairs, the base 1 is provided with a linkage assembly 4 for driving the two jolt seats 311 to act synchronously;

[0033] The linkage assembly 4 comprises a rotating disc 411 located in the middle between the two vibrating seats 311 and rotatingly arranged on the base 1, the rotation of the rotating disc 411 is controlled by a speed regulating motor arranged on the base 1, the rotating disc 411 is rotatably arranged with a slide column 412 at an eccentric position, further comprising a driving slide groove 413 in sliding cooperation with the slide column 412, the driving slide groove 413 is fixedly arranged with a guide rod 414 at two ends in sliding cooperation with the base 1, the guide rod 414 is fixedly arranged with a wedge-shaped seat one 415 in isosceles trapezoidal structure at the other end, the vibrating seat 311 is fixedly arranged with a matching seat one 416 adapted thereto at two ends of the wedge-shaped seat one 415;

[0034] In order to control the rotation of the rotating disc 411, gear teeth can be arranged on the outer wall of the rotating disc 411 along the circumferential direction at equal intervals to form a gear structure, a pinion is rotatably arranged on the base 1 in engagement with the gear structure, and the input shaft of the pinion is connected to the output shaft of the motor (not shown in the figure);

[0035] Because the vibrating seat 311 is movably arranged, in order to fix the vibrating seat 311 and the compacting cylinder 2 to the base 1 during the extension and retraction of the compacting cylinder 2, a positioning assembly 5 is arranged in the vibrating seat 311 in fixed connection with the base 1, when the wedge-shaped seat one 415 is in the middle position (the middle position is the middle position between the two matching seats one 416), the positioning assembly 5 is triggered to perform positioning operation and fix the vibrating seat 311 to the base 1, when the wedge-shaped seat one 415 is in a non-middle position, the positioning assembly 5 is released from positioning operation, the middle position of the wedge-shaped seat one 415 can be effectively obtained by detecting the position of the rotating disc 411, and the detection switch in the prior art can be used to detect the position of the rotating disc 411;

[0036] A support frame 711 is fixedly arranged on the base 1 at the middle position between the two vibrating and pressing assemblies 3, and a swing seat 712 is rotatably arranged on the support frame 711, and a pressing head 713 adapted for use with the upper sand box and the lower sand box is arranged at two ends of the swing seat 712.

[0037] Through the above structure, first two staff stand at the front and back of the base 1, two staff respectively put the upper sand box and the lower sand box to the corresponding upper template and the lower template, and then respectively inject the molding sand into the upper sand box and the lower sand box, after the molding sand injection is completed, control the rotating operation of the rotating disc 411, drive the slide column 412 to rotate at the eccentric position, and the slide column 412 slides in the driving slide groove 413, so that the driving slide groove 413 slides left and right, and the guide rod 414 at both ends slides left and right on the base 1, and the wedge-shaped seat one 415 slides left and right and cooperates with the matching seat one 416 at both ends, when the wedge-shaped seat one 415 slides to the non-central position, first release the positioning of the vibration seat 311, then drive the vibration seat 311 at both ends to reciprocate synchronously under the reciprocating cooperation of the wedge-shaped seat one 415 and the matching seat one 416.

[0038] When the vibration operation is completed, adjust the wedge-shaped seat one 415 to the central position, trigger the positioning assembly 5 to fix the vibration seat 311 and the compaction cylinder 2, then adjust the swing seat 712 to swing, so that the pressure head 713 at both ends cooperates with the upper sand box and the lower sand box, and then control the extension of the compaction cylinder 2 to drive the upper sand box and the lower sand box to abut against the pressure head 713, and then compact the molding sand in the upper sand box and the lower sand box.

[0039] Combining with the drawings Figure 4 and the drawings Figure 5 As shown, the positioning assembly 5 includes a fixed cylinder 510 fixedly arranged on the base 1 and surrounding the vibration seat 311, the vibration seat 311 is hollow inside and has a lifting rod 511 sliding up and down at the central position, the wedge-shaped seat two 512 is slidingly arranged on the lifting rod 511, a plurality of movable rods 513 with elastic function are equidistantly arranged in the circumferential direction of the vibration seat 311, each movable rod 513 has a positioning seat 514 abutting against the inner wall of the fixed cylinder 510 at the outer side end and a matching seat two 515 adapted to the wedge-shaped seat two 512 at the inner side end, the outer side end of the plurality of positioning seats 514 is an arc-shaped structure matched with the inner wall of the fixed cylinder 510, the mounting bracket 516 is arranged on the bottom surface of the lifting rod 511 and the roller 517 is rotatably arranged on the mounting bracket 516, the convex seat 518 is fixedly arranged on the top surface of the wedge-shaped seat one 415 and pushes the roller 517, and the top surface of the convex seat 518 is an arc-shaped structure matched with the roller 517, and the reset spring one 519 is fixedly arranged between the wedge-shaped seat two 512 and the bottom wall of the compaction cylinder 2.

[0040] The fixing assembly 6 fixedly connected with the lifting rod 511 is arranged on the wedge-shaped seat two 512, when the wedge-shaped seat two 512 moves downward to be close to the bottom wall of the vibration seat 311, the fixing assembly 6 is triggered to act and release the positioning of the lifting rod 511.

[0041] The working principle of positioning component 5 is as follows: In the initial state, wedge seat 415 is in the center position, and positioning component 5 is in the positioning state. When wedge seat 415 slides and is not in the center position, convex seat 518 will slide. During the sliding process of convex seat 518, the arc surface of convex seat 518 will continuously contact roller 517 to ensure the smooth up and down sliding of roller 517. When convex seat 518 separates from roller 517 at its highest point, lifting rod 511 will slide downward, simultaneously driving wedge seat 512 to slide downward, causing wedge seat 512 to separate from mating seat 515. At this time, multiple moving rods 513 will automatically spring back, causing positioning seat 514 to move away from fixed cylinder. The inner wall of 510 moves and separates, thereby releasing the positioning of the vibrating seat 311 and the compaction cylinder 2. At the same time, when the second wedge seat 512 moves downward to near the bottom wall of the vibrating seat 311, it will trigger the action of the fixing component 6 and release the positioning of the lifting rod 511. In this way, during the reciprocating movement of the first wedge seat 415, each time it is in the middle position, when the convex seat 518 and the roller 517 cooperate, the lifting rod 511 will be driven to slide up and down in the second wedge seat 512. At this time, the second wedge seat 512 will not slide up and down, so it will not trigger the positioning operation of the positioning component 5. Thus, during the reciprocating vibration of the vibrating seat 311 and the compaction cylinder 2, the action of the positioning component 5 will not be affected.

[0042] Combined with appendix Figure 4 Appendix Figure 6 Appendix Figure 7 and attached Figure 8 As shown, the fixing component 6 includes a mounting groove 611 that avoids the lifting rod 511 and is opened on the bottom surface of the wedge-shaped seat 512. The wedge-shaped seat 512 has a seat body 612 at the center for the lifting rod 511 to pass through. A positioning pin 613 with a spring-loaded function is inserted into the seat body 612. The lifting rod 511 has a pin hole for the positioning pin 613 to be inserted. A frame 614 is fixed on the outer surface of the positioning pin 613, and a wedge block 615 is provided on the inner wall of the frame 614. A telescopic rod 616 is fixed on the bottom wall of the vibration seat 311. A mating block 617 that matches the wedge block 615 is fixed on the movable end of the telescopic rod 616. A magnet 1 and a magnet 2 (not shown in the figure) are respectively provided between the bottom surface of the wedge-shaped seat 512 and the bottom wall of the vibration seat 311 for mutual cooperation. When the magnet 1 and the magnet 2 are close to each other, they attract each other.

[0043] The telescopic rod 616 comprises a cylinder 6161 fixedly arranged on the bottom wall of the vibrating seat 311, a movable rod 6162 with a rebound function is arranged in the cylinder 6161, the rebound force of the movable rod 6162 is greater than that of the positioning pin 613, an electromagnet 6163 is fixedly arranged on the bottom surface of the movable rod 6162, a matching block 617 is fixedly connected to the top surface of the movable rod 6162, a coil 6164 matched with the electromagnet 6163 is arranged in the cylinder 6161, and an electromagnet head 6165 for supplying power to the coil 6164 is further arranged outside, and the electromagnet head 6165 is connected with external wires.

[0044] The principle of positioning or de-positioning of the fixing assembly 6 is as follows: in the initial state, the positioning pin 613 and the pin hole are matched to fixedly connect the lifting rod 511 and the wedge-shaped seat two 512; when the wedge-shaped seat two 512 moves downwards to be close to the bottom wall of the vibrating seat 311, the wedge-shaped block 615 slides downwards and matches with the matching block 617, under the matching of the two, the positioning pin 613 is pushed to slide rightwards, so that the positioning pin 613 is separated from the pin hole, and the positioning of the lifting rod 511 is released; meanwhile, under the matching of the reset spring one 519, the magnet one and the magnet two, the wedge-shaped seat two 512 is fixedly connected to the bottom wall of the vibrating seat 311, so that the lifting rod 511 slides up and down in the wedge-shaped seat two 512 during the up-down reciprocating vibration of the vibrating seat 311, and the triggering operation of the positioning assembly 5 is not performed;

[0045] When the vibrating operation is about to be completed and the vibrating seat 311 is in the upper position, the electromagnet head 6165 is powered through external wires, at this time, a strong magnetic field is generated at the coil 6164, under the action of the magnetic field, the movable rod 6162 moves downwards against the spring force, so that the matching block 617 is separated from the wedge-shaped block 615, at this time, the positioning pin 613 automatically rebounds and extends out, through the matching of the electromagnet head 6165, the coil 6164 and the electromagnet 6163, the response speed of the telescopic operation of the movable rod 6162 is fast, the pin hole is matched with the positioning pin 613 during the upward sliding of the lifting rod 511, so that the lifting rod 511 is fixedly connected to the wedge-shaped seat two 512, during the continuous upward movement of the lifting rod 511, the wedge-shaped seat two 512 moves upwards, and the positioning assembly 5 is controlled to perform the positioning operation, in the embodiment, the power supply of the electromagnet head 6165 can be controlled by a time relay.

[0046] Combining FIGS. 1-3 Figure 4 and FIGS. 4-6 Figure 9 As shown in the figures, inverted U-shaped frames 111 are fixedly arranged at both ends of the vibrating seat 311 on the base 1, a sliding rod 112 fixedly connected with the vibrating seat 311 is slidably arranged in the U-shaped frame 111, and a reset spring two 113 is arranged around the sliding rod 112;

[0047] The fixed cylinder 510 bottom surface is provided with a plurality of support rods 114 fixedly connected with the base 1 in the circumferential direction, and the fixed cylinder 510 bottom surface is provided with a plurality of extension seats 115 supporting the vibration seats 311, the extension seats 115 are slidably provided with guide columns 116 fixedly connected with the vibration seats 311, and the stability of the vibration seats 311 during the reciprocating vibration up and down is ensured through the arrangement of the slide rods 112 and the guide columns 116.

[0048] In the specific implementation of the present application, first, two workers are respectively located on the front and rear sides of the base 1, and the upper sand box and the lower sand box are respectively placed on the upper mold plate and the lower mold plate, then the molding sand is injected into the upper sand box and the lower sand box, after the injection is completed, the rotating disc 411 is controlled to rotate, under the action of the slide column 412 and the driving slide groove 413, the guide rod 414 and the wedge-shaped seat one 415 are driven to reciprocatingly slide left and right, through the cooperation of the wedge-shaped seat one 415 and the cooperation seat one 416 at both ends, the vibration seat 311, the compaction air cylinder 2, the upper mold plate and the lower mold plate at both ends are driven to reciprocatingly vibrate up and down, when the wedge-shaped seat one 415 slides to the non-middle position, the positioning of the vibration seat 311 by the positioning assembly 5 is triggered to be released, so that the vibration seat 311 is reciprocatingly vibrated up and down, when the positioning of the positioning assembly 5 is released, the wedge-shaped seat two 512 slides downward, when the wedge-shaped seat two 512 slides close to the bottom wall of the vibration seat 311, the positioning release of the lifting rod 511 by the fixing assembly 6 is triggered, so that the lifting rod 511 slides up and down in the wedge-shaped seat two 512 in the reciprocating up and down vibration process of the vibration seat 311 driven by the left and right sliding of the wedge-shaped seat one 415, so that the action of the positioning assembly 5 is not triggered. The present device can not only concentrate the molding operation of the upper sand box and the lower sand box on the same device, reduce the occupied area of the use place, meet the use in the space-limited place, but also save the production cost, thereby improving the use efficiency of the present device.

[0049] The above describes the present application and its embodiments, which are not limited, and the drawings only show one of the embodiments of the present application, and the actual structure is not limited thereto. In general, if a person skilled in the art is inspired thereby, without departing from the purpose of the present application, without creatively designing similar structure modes and embodiments of the technical solutions, they should all belong to the protection scope of the present application.

Claims

1. A molding compacting device for a sand box, comprising a base (1) and a compacting cylinder (2), characterized in that: The base (1) is respectively provided with a jolt squeeze assembly (3) for molding the upper sand box and the lower sand box on the front and back sides, the jolt squeeze assembly (3) comprises reciprocatingly arranged jolt seats (311) on the two sides of the base (1), the two jolt seats (311) are respectively fixedly connected with compacting cylinders (2), the base (1) is provided with a linkage assembly (4) for driving the two jolt seats (311) to synchronously act; The linkage assembly (4) comprises a rotating disc (411) arranged between the two jolt seats (311) and rotatably arranged on the base (1), the rotating disc (411) is rotatably provided with a slide column (412) at an eccentric position, further comprises a driving slide groove (413) in sliding cooperation with the slide column (412), the two ends of the driving slide groove (413) are respectively fixedly provided with guide rods (414) in sliding cooperation with the base (1), the other ends of the guide rods (414) are fixedly provided with wedge seats one (415), the two ends of the wedge seats one (415) are respectively fixedly provided with matching seats one (416) matched with the wedge seats one (415) on the jolt seats (311); The jolt seat (311) is provided with a positioning assembly (5) fixedly connected with the base (1), when the wedge seats one (415) are in the middle position, the positioning assembly (5) is triggered to act for positioning operation, when the wedge seats one (415) are not in the middle position, the positioning assembly (5) is released from the positioning operation; The positioning assembly (5) comprises a fixed cylinder (510) fixedly arranged on the base (1) and surrounding the jolt seat (311), the jolt seat (311) is a hollow structure and is provided with a lifting rod (511) sliding up and down at the center position, the lifting rod (511) is slidingly provided with wedge seats two (512), the jolt seat (311) is provided with a plurality of moving rods (513) with a rebound function at equal intervals in the circumferential direction, the outer side end of each moving rod (513) is provided with a positioning seat (514) abutting against the inner wall of the fixed cylinder (510), the inner side end is provided with a matching seat two (515) matched with the wedge seats two (512), the bottom surface of the lifting rod (511) is provided with a mounting bracket (516) and a roller (517) rotatably arranged on the mounting bracket (516), the top surface of the wedge seats two (512) is fixedly provided with a convex seat (518) for pushing the roller (517), the wedge seats two (512) and the bottom wall of the compacting cylinder (2) are fixedly provided with a reset spring one (519); The wedge seats two (512) are fixedly provided with a fixing assembly (6) fixedly connected with the lifting rod (511), when the wedge seats two (512) are moved downwards to be close to the bottom wall of the jolt seat (311), the fixing assembly (6) is triggered to act and release the positioning of the lifting rod (511); The fixed assembly (6) includes an installation slot (611) which avoids the lifting rod (511) and is opened on the bottom surface of the wedge-shaped seat two (512), the central position of the wedge-shaped seat two (512) is provided with a seat body (612) which is penetrated by the lifting rod (511), the positioning pin (613) with the rebound function is penetrated in the seat body (612), the pin hole for the positioning pin (613) to insert is opened on the lifting rod (511), the frame body (614) is fixedly arranged on the outer side surface of the positioning pin (613) and the wedge-shaped block (615) is arranged on the inner wall of the frame body (614), the telescopic rod (616) is fixedly arranged on the bottom wall of the vibration seat (311), and the matching block (617) which is matched with the wedge-shaped block (615) is fixedly arranged on the movable end of the telescopic rod (616).

2. The sand mold compacting device according to claim 1, characterized by: The telescopic rod (616) includes the cylinder (6161) which is fixedly arranged on the bottom wall of the vibration seat (311), the movable rod (6162) with the rebound function is penetrated in the cylinder (6161), the electromagnet (6163) is fixedly arranged on the bottom surface of the movable rod (6162), the matching block (617) is fixedly connected on the top surface, and the coil (6164) which is matched with the electromagnet (6163) is wound in the cylinder (6161), and the electromagnet head (6165) which supplies power for the coil (6164) is further arranged outside.

3. The sand mold compacting device of claim 1, wherein: The magnet one and the magnet two which are matched with each other are arranged between the bottom surface of the wedge-shaped seat two (512) and the bottom wall of the vibration seat (311).

4. The sand mold compacting device of claim 1, wherein: The inverted U-shaped frame (111) is fixedly arranged on the vibration seat (311) of the base (1), the sliding rod (112) which is fixedly connected with the vibration seat (311) is slidably penetrated in the U-shaped frame (111), and the reset spring two (113) is wound on the sliding rod (112).

5. A sand mould compacting device according to claim 4, characterised in that: The support rod (114) which is fixedly connected with the base (1) is equidistantly arranged on the bottom surface of the fixed cylinder (510) along the circumferential direction, the extension seat (115) which supports the vibration seat (311) is arranged on the bottom surface of the fixed cylinder (510), and the guide column (116) which is fixedly connected with the vibration seat (311) is slidably penetrated in the extension seat (115).

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