Structure for preventing sand box from colliding

Abstract

The utility model discloses a structure for preventing sand boxes from colliding. The structure comprises a base, a lower sand box, an upper sand box, a first frame, a buffer seat, a buffer spring, a contact plate, a hanging column, a first positioning plate, a second positioning plate, a nut, sawteeth, a guide rail, a hydraulic pushing cylinder, a pushing column, a pushing plate, a hydraulic buffer cylinder, a buffer column, a buffer plate, a photoelectric emitter and a photoelectric sensor, the sand box collision prevention structure is designed, displacement changes of the output end of the hydraulic buffering cylinder are monitored in real time through the position sensor, clearance elimination between sand boxes is determined at the first time, the system immediately controls the hydraulic pushing cylinder to be switched from a low speed to a high speed, and the problem that the sand boxes collide due to the fact that any clearance exists between the sand boxes during high-speed pushing is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a casting sand box technical field, concretely to a structure of preventing sand box from colliding with each other. BACKGROUND

[0002] Casting sand box is a key component in casting process, mainly used for supporting and containing sand (molding material) to form the required casting shape in the casting process; the sand in the sand box is compacted and fixed into a specific shape, which is opposite to the shape of the required casting, forming a cavity (i.e. sand mold); when the molten metal is poured into the cavity, it will cool and solidify and fill the entire cavity, eventually forming the required casting, after the sand box molding is completed and the mold is locked, the sand box needs to be pushed to the casting position by the hydraulic pushing cylinder for subsequent casting process.

[0003] The existing sand box pushing process has the following defects: first, when the hydraulic pushing cylinder pushes the sand box, there is a gap between the sand boxes, and when the hydraulic pushing cylinder switches from low speed to high speed, the sand boxes will collide due to the gap between them, and the sand mold of the sand box after being hit is easy to scatter, resulting in poor products; second, if the hydraulic pushing cylinder is set to a very short time during the low speed pushing stage, and the pushing distance is limited, it is difficult to effectively eliminate the gap between the sand boxes; when the pushing speed is increased to high speed, the hydraulic cylinder may be damaged due to direct impact on the sand boxes that are not tightly fitted, further affecting the stability and safety of the operation; third, on the contrary, if the hydraulic pushing cylinder maintains a long time at low speed and pushes a long distance to try to completely eliminate the gap between the sand boxes, although it can solve the problem of collision, it will undoubtedly greatly prolong the production cycle, reduce the overall production efficiency, and increase unnecessary cost expenditure; fourth, the sand box design lacks necessary buffer structure, so that the sand boxes cannot effectively absorb or disperse impact force when they contact each other, which not only aggravates the risk of sand mold loosening, but also may threaten the stable operation of the entire production line. SUMMARY

[0004] The utility model aims at providing a structure of preventing sand box from colliding with each other to solve the problems in the above background technology.

[0005] In order to achieve the above object, the utility model provides the following technical scheme: a structure for preventing sand box from colliding with box, the upper surface of lower sand box is fixedly connected with upper sand box, the both sides outer walls of lower sand box and upper sand box are all provided with buffer seat, buffer spring is provided in buffer seat, the other end of buffer spring is fixedly connected with contact plate, one side of lower sand box is provided with hydraulic push cylinder, the other side of lower sand box is provided with hydraulic buffer cylinder, the output of hydraulic buffer cylinder is fixedly connected with buffer column, buffer column is fixedly connected with photoelectric emitter, the both sides of lower sand box are provided with guide rail, the side of photoelectric emitter is provided with photoelectric sensor, and photoelectric sensor is fixedly connected on the one side outer wall of guide rail.

[0006] As a further technical scheme of the utility model, the output of the hydraulic push cylinder is fixedly connected with a push column, the other end of the push column is fixedly connected with a push plate, and the push plate is arranged on the one side outer wall of the contact plate. A third fixing bolt is sleeved on the outer wall of the hydraulic push cylinder.

[0007] As a further technical scheme of the utility model, one end of the buffer column is fixedly connected with a buffer plate, and the buffer plate is arranged on the one side outer wall of the contact plate. A fourth fixing bolt is sleeved on the outer wall of the hydraulic buffer cylinder.

[0008] As a further technical scheme of the utility model, a first frame is arranged on the outer wall of the lower sand box, a first fixing bolt is sleeved on the first frame, a base is arranged at the bottom end of the lower sand box, and the first fixing bolt is threadedly connected to the base. A second frame is arranged on the outer wall of the upper sand box.

[0009] As a further technical scheme of the utility model, a first reinforcing rib is arranged on the outer wall of the lower sand box, and a second reinforcing rib is arranged on the outer wall of the upper sand box.

[0010] As a further technical scheme of the utility model, a first positioning plate is arranged on the both sides outer walls of the lower sand box, a second positioning plate is arranged on the both sides outer walls of the upper sand box, a second fixing bolt is sleeved on the first positioning plate, the other end of the second fixing bolt is sleeved on the second positioning plate, a nut is arranged on the one side outer wall of the second positioning plate, and the nut is threadedly connected to the second fixing bolt.

[0011] As a further technical scheme of the utility model, a lifting column is arranged on the both sides outer walls of the lower sand box and the upper sand box, and a sawtooth is arranged on the inner walls of the lower sand box and the upper sand box.

[0012] Compared with the prior art, the utility model discloses have the beneficial effects that: the utility model discloses have the sand box structure of preventing the box structure, through the displacement change of position sensor real -time monitoring hydraulic buffer jar output end, the elimination of sand box interval is determined in the first time, and the system controls immediately hydraulic push -on jar from low -speed switching for high -speed, prevent the existence of the interval between sand box when high -speed push, the problem of sand box impact appears, and can accurate control low -speed push -on stage's time, can eliminate the interval between the box sufficiently, avoid the potential problem caused by the residual interval, can effectively shorten the production cycle, avoid the production efficiency decline caused by the push -on time being too long, guarantee the production quality simultaneously, also, the production efficiency is improved significantly, and through sand box contact buffer structure, can further reduce the impact force that sand box contact adheres to, ensure the stability of sand core in the push -on process, provide powerful guarantee for the high -quality production of product. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is whole three -dimensional structure schematic diagram of the utility model;

[0014] Figure 2 It is whole overhead structure schematic diagram of the utility model;

[0015] Figure 3 It is Figure 2 It is the enlarged structure schematic diagram of A area in;

[0016] Figure 4 It is whole side structure schematic diagram of the utility model;

[0017] Figure 5 It is the three -dimensional structure schematic diagram of the sand box of the utility model of making type;

[0018] Figure 6 It is the method flow chart of the utility model.

[0019] In the drawing: 1, base, 2, lower sand box, 3, upper sand box, 4, first frame, 5, first fixed bolt, 6, second frame, 7, first reinforcing rib, 8, second reinforcing rib, 9, buffer seat, 10, buffer spring, 11, contact plate, 12, hanging column, 13, first positioning plate, 14, second positioning plate, 15, second fixed bolt, 16, nut, 17, sawtooth, 18, guide rail, 19, hydraulic push -on jar, 20, third fixed bolt, 21, push -on column, 22, push -on plate, 23, hydraulic buffer jar, 24, fourth fixed bolt, 25, buffer column, 26, buffer plate, 27, photoelectric emitter, 28, photoelectric sensor. DETAILED DESCRIPTION

[0020] Clearly, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0021] Please refer to the accompanying drawings Figure 1 -attached Figure 5The utility model provides an embodiment: a structure for preventing sand box from colliding with box, the upper surface of lower sand box 2 is fixedly connected with upper sand box 3, the both sides outer walls of lower sand box 2 and upper sand box 3 are all provided with buffer seat 9, is provided with buffer spring 10 in buffer seat 9, the other end of buffer spring 10 is fixedly connected with contact plate 11, one side of lower sand box 2 is provided with hydraulic push cylinder 19, the other side of lower sand box 2 is provided with hydraulic buffer cylinder 23, the output of hydraulic buffer cylinder 23 is fixedly connected with buffer column 25, buffer column 25 is fixedly connected with photoelectric emitter 27, the both sides of lower sand box 2 are provided with guide rail 18, one side of photoelectric emitter 27 is provided with photoelectric sensor 28, and photoelectric sensor 28 is fixedly connected on the one side outer wall of guide rail 18;The output of hydraulic push cylinder 19 is fixedly connected with push column 21, the other end of push column 21 is fixedly connected with push plate 22, and push plate 22 is arranged on the one side outer wall of contact plate 11, the outer wall of hydraulic push cylinder 19 is sleeved with third fixed bolt 20, and third fixed bolt 20 is used for fixing hydraulic push cylinder 19;One end of buffer column 25 is fixedly connected with buffer plate 26, and buffer plate 26 is arranged on the one side outer wall of contact plate 11, the outer wall of hydraulic buffer cylinder 23 is sleeved with fourth fixed bolt 24, and fourth fixed bolt 24 is used for fixing hydraulic buffer cylinder 23;The outer wall of lower sand box 2 is provided with first frame 4, first frame 4 is sleeved with first fixed bolt 5, the bottom of lower sand box 2 is provided with base 1, and first fixed bolt 5 is screw connected on base 1, the outer wall of upper sand box 3 is provided with second frame 6, and first fixed bolt 5 is used for connecting and fixing lower sand box 2 and base 1;The outer wall of lower sand box 2 is provided with first reinforcing rib 7, and the outer wall of upper sand box 3 is provided with second reinforcing rib 8, and first reinforcing rib 7 and second reinforcing rib 8 are used for improving the structural strength of lower sand box 2 and upper sand box 3 respectively;The both sides outer walls of lower sand box 2 are provided with first positioning plate 13, and the both sides outer walls of upper sand box 3 are provided with second positioning plate 14, second fixed bolt 15 is sleeved on first positioning plate 13, and the other end of second fixed bolt 15 is sleeved on second positioning plate 14, the one side outer wall of second positioning plate 14 is provided with nut 16, and nut 16 is screw connected on second fixed bolt 15, and first positioning plate 13, second positioning plate 14, second fixed bolt 15 and nut 16 are used for connecting and fastening lower sand box 2 and upper sand box 3;The both sides outer walls of lower sand box 2 and upper sand box 3 are all provided with lifting column 12, and the inner walls of lower sand box 2 and upper sand box 3 are all provided with sawtooth 17, lifting column 12 is used for providing hoisting position, and is convenient for carrying and positioning, and sawtooth 17 is used for increasing the contact area between the inner wall of sand box and sand mould, thereby improving the stability and fixity of sand mould.

[0022] Please refer to the attached drawings Figure 6The utility model provides a kind of embodiment: a method for preventing sand box to hit box, comprising step one, core making and molding;Step two, low speed push;Step three, sand box gap elimination;Step four, buffer cylinder contraction;Step five, inductive position change;Step six, push mode switching;

[0023] Wherein in the above step one, the prepared molding sand is filled into sand box and tamped, leveled, according to the internal structure requirements of casting, install core making, and connect fixed base 1, lower sand box 2 and upper sand box 3 to mold;

[0024] Wherein in the above step two, the molding sand box is pushed by low speed through hydraulic push cylinder 19;

[0025] Wherein in the above step three, low speed push molding sand box eliminates box gap and is buffered through buffer structure, hydraulic push cylinder 19 contacts contact plate 11 on lower sand box 2 through push plate 22 on push column 21 and pushes lower sand box 2 to move along guide rail 18, when sand box is contacted, contact plate 11 pushes buffer spring 10 to compress to achieve buffering effect, the elastic force of buffer spring 10 is less than the friction of base 1 sliding, after adjacent sand box is closely attached together, rear sand box moves together with front sand box, to achieve the purpose of eliminating box gap stably;

[0026] Wherein in the above step four, after eliminating box gap, sand box extrudes hydraulic buffer cylinder 23, so that it contracts;

[0027] Wherein in the above step five, after eliminating box gap, the outermost sand box is extruded buffer plate 26 through outer contact plate 11, so that buffer column 25 contracts, photoelectric emitter 27 moves along in the process, and receives position signal through photoelectric sensor 28, detects position change;

[0028] Wherein in the above step six, control hydraulic push cylinder 19 is switched from low speed push mode to high speed push mode.

[0029] Based on the above, the advantages of the sand box pushing device are as follows: firstly, sand core preparation work is carried out, the prepared molding sand is filled into the lower sand box 2 and the upper sand box 3 and tamped and leveled, the core is installed according to the internal structure requirement of the casting, and the lower sand box 2, the upper sand box 3 and the base 1 are connected and fixed to perform molding, the lower sand box 2 and the base 1 are connected through the first fixing bolts 5 on the first frame 4, the upper sand box 3 is placed on the lower sand box 2 by aligning the first frame 4 and the second frame 6, the lower sand box 2 and the upper sand box 3 are connected and fastened through the first positioning plate 13, the second positioning plate 14, the second fixing bolt 15 and the nut 16, after the core preparation and molding are completed, the molding sand box is pushed at low speed through the hydraulic pushing cylinder 19, the pushing plate 22 on the pushing column 21 of the hydraulic pushing cylinder 19 contacts the contact plate 11 on the lower sand box 2 and pushes the lower sand box 2 to move along the guide rail 18, when the sand boxes contact each other, the contact plate 11 pushes the buffer spring 10 in the buffer seat 9 to compress and achieve the buffering effect, the elastic force of the buffer spring 10 is smaller than the friction force of the base 1 sliding, after the adjacent sand boxes are tightly attached together, the rear sand box moves together with the front sand box, the purpose of stably eliminating the gap between the sand boxes is achieved, after the gap between the sand boxes is eliminated, the outermost sand box is extruded by the buffer plate 26 through the outer contact plate 11, the buffer column 25 on the hydraulic buffer cylinder 23 is retracted, the photoelectric emitter 27 moves together in the process, and the position signal is received through the photoelectric sensor 28, the position change is detected, indicating that the gap between the sand boxes has been eliminated, then the hydraulic pushing cylinder 19 is switched from the low-speed pushing mode to the high-speed pushing mode to complete the subsequent pushing; the first reinforcing rib 7 and the second reinforcing rib 8 are respectively used for improving the structural strength of the lower sand box 2 and the upper sand box 3, the lifting column 12 is used for providing a lifting position, facilitating carrying and positioning, the sawtooth 17 is used for increasing the contact area between the inner wall of the sand box and the sand mold, thereby improving the stability and fixity of the sand mold, the third fixing bolt 20 and the fourth fixing bolt 24 are respectively used for fixing the hydraulic pushing cylinder 19 and the hydraulic buffer cylinder 23.

[0030] It is obvious for those skilled in the art that the utility model is not limited to the details of the above-mentioned exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the utility model is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any reference signs in the claims should not be regarded as limiting the involved claims.

Claims

1. A structure for preventing sand box from colliding with another sand box, comprising a lower sand box (2), characterized in that: The upper surface of the lower sand box (2) is fixedly connected to the upper sand box (3). Both sides of the lower sand box (2) and the upper sand box (3) are provided with buffer seats (9). The buffer seats (9) are provided with buffer springs (10). The other end of the buffer springs (10) is fixedly connected to a contact plate (11). A hydraulic push cylinder (19) is provided on one side of the lower sand box (2). A hydraulic buffer cylinder (23) is provided on the other side of the lower sand box (2). A buffer column (25) is fixedly connected to the output end of the hydraulic buffer cylinder (23). A photoelectric transmitter (27) is fixedly connected to the buffer column (25). Guide rails (18) are provided on both sides of the lower sand box (2). A photoelectric sensor (28) is provided on one side of the photoelectric transmitter (27). The photoelectric sensor (28) is fixedly connected to the outer wall of one side of the guide rail (18).

2. The structure for preventing sandbox collision according to claim 1, characterized in that: The output end of the hydraulic push cylinder (19) is fixedly connected to a push column (21), and the other end of the push column (21) is fixedly connected to a push plate (22). The push plate (22) is disposed on one side of the outer wall of the contact plate (11), and a third fixing bolt (20) is sleeved on the outer wall of the hydraulic push cylinder (19).

3. The structure for preventing sandbox collision according to claim 1, characterized in that: One end of the buffer column (25) is fixedly connected to a buffer plate (26), and the buffer plate (26) is set on the outer wall of one side of the contact plate (11). A fourth fixing bolt (24) is sleeved on the outer wall of the hydraulic buffer cylinder (23).

4. The structure for preventing sandbox collision according to claim 1, characterized in that: The lower sand box (2) has a first frame (4) on its outer wall, and a first fixing bolt (5) is fitted on the first frame (4). The bottom of the lower sand box (2) has a base (1), and the first fixing bolt (5) is threaded onto the base (1). The upper sand box (3) has a second frame (6) on its outer wall.

5. The structure for preventing sandbox collision according to claim 4, characterized in that: The outer wall of the lower sand box (2) is provided with a first reinforcing rib (7), and the outer wall of the upper sand box (3) is provided with a second reinforcing rib (8).

6. The structure for preventing sandbox collision according to claim 4, characterized in that: The lower sand box (2) is provided with a first positioning plate (13) on both outer walls, and the upper sand box (3) is provided with a second positioning plate (14) on both outer walls. A second fixing bolt (15) is sleeved on the first positioning plate (13), and the other end of the second fixing bolt (15) is sleeved on the second positioning plate (14). A nut (16) is provided on one outer wall of the second positioning plate (14), and the nut (16) is threadedly connected to the second fixing bolt (15).

7. The structure for preventing sandbox collision according to claim 4, characterized in that: Hanging columns (12) are provided on both outer walls of the lower sand box (2) and the upper sand box (3), and serrations (17) are provided on the inner walls of the lower sand box (2) and the upper sand box (3).

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