A casting sand box turning machine

Abstract

The present invention relates to a casting sand box turner, comprising a rotary unit, a bearing unit, a chute unit and a limiting unit, wherein the rotary unit comprises brackets on both sides and a rotary shaft rotatably arranged between the brackets on both sides; the bearing unit is arranged at the lower part of the rotary shaft, and the bearing unit comprises lower clamping seats on both sides, connecting plates connecting the clamping seats on both sides and brackets arranged below the connecting plates; the chute unit is arranged at the upper part of the rotary shaft, and the chute unit comprises upper clamping seats on both sides and a chute connecting the upper clamping seats on both sides, and the upper clamping seats and the lower clamping seats are mutually buckled on the rotary shaft; the limiting unit is rotatably arranged in the chute, and the limiting unit comprises a limiting frame and a grating plate arranged in the limiting frame, a plurality of connecting rods are arranged between the limiting frame and the bracket, and a dust hood is arranged at the upper part of the limiting frame. The present invention has a reasonable structure, can separate the molding sand and the casting well at one time, and can avoid the diffusion of dust, thereby ensuring the cleanliness of the working environment.

Description

Technical Field

[0001] The invention relates to the technical field of V-method casting, in particular to a casting sand box turner. Background Art

[0002] V-method casting uses a plastic film to seal the sand box and uses a vacuum exhaust system to extract the air in the mold. There is a pressure difference between the inside and outside of the mold, which makes the dry sand dense and forms the required cavity. After core setting, box closing, pouring and vacuuming, the casting solidifies and the negative pressure is released, the molding sand collapses to obtain the casting.

[0003] After obtaining the required casting, the sand box needs to be placed on the box turner. The worker is at the sand dropping position and operates the box turner to turn the box and pour the sand to take out the model and casting. As for the sand dropping position, its safety factor is low. The dust stirred up when pouring the sand is diffused, resulting in a poor working environment and serious pollution. The existing box turner is complicated to operate when loading and unloading the sand box, and it is difficult to ensure that the sand box is turned and fixed. Moreover, when pouring the sand, the casting in the sand box cannot be taken into account, so that the molding sand and the casting cannot be well separated at one time.

[0004] Taking the semi-automatic box turning device disclosed in the authorization announcement number CN 106735111 A as an example, the sand box is fixed by the engagement of the clamping claws and the clamping holes provided on the sand box. Figure 1 It can be seen that the sand box is in a suspended state after being fixed, and the clamping claws are subjected to a large force. When turning the box, the clamping claws are difficult to maintain a stable clamping state, resulting in instability of the sand box, and the state of the casting when the sand is poured cannot be known, which has certain limitations. For this reason, a casting sand box turning machine is proposed. Summary of the invention

[0005] In order to solve the problems of large dust generation and failure to separate the molding sand and castings well in the traditional sand dumping, the present invention provides a casting sand box turner which can ensure good fixation of the sand box and a clean working environment, and realizes one-time separation of the molding sand and castings.

[0006] To achieve the above purpose, the technical solution adopted by the present invention is:

[0007] A casting sand box turner, comprising a rotary unit, a bearing unit, a chute unit and a limit unit, wherein the rotary unit comprises brackets on two sides and a rotary shaft rotatably arranged between the brackets on the two sides;

[0008] The bearing unit is arranged at the lower part of the rotary shaft, and the bearing unit includes lower clamping seats at both sides, a connecting plate connecting the clamping seats at both sides, and an "L"-shaped bracket arranged below the connecting plate, a rotary lifting lug is arranged on one side of the bracket, and a pad is arranged at the bottom of the bracket;

[0009] The chute unit is arranged on the upper part of the rotary shaft, and the chute unit comprises upper clamping seats on both sides and chutes connecting the upper clamping seats on both sides, and the upper clamping seats and the lower clamping seats have the same structure, and are mutually buckled on the rotary shaft and fastened by bolts;

[0010] The limit unit is rotatably arranged in the chute, and the limit unit includes a limit frame and a grating plate arranged in the limit frame. A plurality of connecting rods are detachably arranged between the limit frame and the bracket. A hollow dust hood with a "U"-shaped cross-section is arranged on the upper part of the limit frame, and the air outlet of the dust hood faces upward.

[0011] Furthermore, the rotating shaft is located at the top of the bracket, and slots are symmetrically provided at both ends of the rotating shaft; the upper clamping seat and the lower clamping seat are buckled in the slots up and down, and the upper clamping seat and the lower clamping seat are fastened by bolt connection.

[0012] Furthermore, the bracket includes a plurality of support plates arranged at intervals and a reinforcing plate connecting the plurality of support plates, the cross-section of the support plate is in an "L" shape, the vertical end of the support plate is fixedly connected to the connecting plate, and the cross-section of the horizontal end of the support plate after being connected to the reinforcing plate is in a grid shape; the foot is a plate-like structure made of rubber, the length direction of the foot is the same as the layout direction of the reinforcing plate, and the lower end surface of the foot is flush with the lower end surface of the bracket.

[0013] Furthermore, the chute includes an integrally formed flat plate portion and a side plate portion, the cross-section of the flat plate portion is an inverted "convex" shape, the side plate portions are fixedly arranged on the left and right sides of the flat plate portion, the cross-section of the side plate portion is a right-angled trapezoid, and the side plate portions are vertically fixed on the upper seat; the lower end of the flat plate portion is connected to the connecting plate bolts, and the cross-section is "L"-shaped after the flat plate portion and the connecting plate are connected.

[0014] Furthermore, a fixing rod is inserted between the side plates at both sides, and bolts are arranged at both ends of the fixing rod to limit movement; the cross section of the limiting frame is in the shape of a Chinese character U, and the limiting frame is rotatably arranged on the fixing rod.

[0015] Furthermore, the limit frame and the bracket correspond to each other up and down and are arranged in parallel; the connecting rod includes a vertical rod part and a clamping plate part, and the upper and lower ends of the vertical rod part are respectively connected to the limit frame and the bracket through bolts.

[0016] Furthermore, the dust hood and the limiting frame are detachably connected, the dust hood is arranged around the limiting frame, and the dust hood includes a hood body, a plurality of air holes provided on the inner wall of the hood body, and an air duct joint provided on the outer wall of the hood body;

[0017] The air holes are rectangular holes, and air guide plates are arranged on the inner wall of the cover body corresponding to each air hole. The air guide plates are bent upward in an "L" shape to control the air intake direction.

[0018] Furthermore, a reduction motor is provided on one side of the bracket, and the reduction motor is transmission-connected to the rotating shaft.

[0019] Through the above technical solution, the beneficial effects of the present invention are:

[0020] The structure of the present invention is reasonably designed. The bracket is used to carry the sand box, and the bracket cooperates with the chute to conveniently pour the molding sand into the sand bin. The bracket and the chute are detachably connected to facilitate maintenance and repair; the bracket, the limit frame, the connecting rod and the pull rod cooperate with each other to fix the sand box to avoid deviation during the box turning process and cause accidents; the grate plate can separate the molding sand and the casting, and then the casting sand automatically flows out, and the casting remains in the sand box, thereby improving the sand falling efficiency.

[0021] The dust collection hood provided in the present invention is arranged around the limiting frame, and cooperates with the dust collection fan to absorb the dust in time when pouring the molding sand, thereby changing the working environment; through the crane or the reduction motor as the rotary power, the box turning operation is stable and flexible to use, which can improve the box turning efficiency, reduce labor intensity, ensure the safety of workers' operation, and has good practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The utility model is a schematic diagram of the overall structure of a casting sand box turning machine of the present invention.

[0023] Figure 2 The invention discloses a casting sand box turning machine. Figure 1 Exploded view of.

[0024] Figure 3 The invention discloses a casting sand box turning machine. Figure 1 Half section view.

[0025] Figure 4 The invention discloses a casting sand box turning machine. Figure 3 Enlarged schematic diagram at point A in the middle.

[0026] Figure 5 The invention discloses a casting sand box turning machine. Figure 3 Enlarged schematic diagram of point B in the middle.

[0027] Figure 6 The present invention is a schematic diagram of a casting sand box turning machine for turning the sand box in accordance with the first embodiment of the present invention.

[0028] Figure 7 It is a schematic diagram of a second embodiment of a casting sand box turner of the present invention.

[0029] The numbers in the accompanying drawings are: 1 is a bracket, 2 is a rotating shaft, 3 is a lower holder, 4 is a connecting plate, 5 is a bracket, 51 is a holder, 52 is a reinforcing plate, 6 is a rotating lifting ear, 7 is a pad, 8 is an upper holder, 9 is a chute, 91 is a flat plate portion, 92 is a side plate portion, 10 is a limit frame, 11 is a grate plate, 12 is a connecting rod, 121 is a vertical rod portion, 122 is a card plate portion, 13 is a dust hood, 131 is a hood body, 132 is an air hole, 133 is an air duct joint, 14 is a slot, 15 is a fixing rod, 16 is an air guide plate, 17 is a reduction motor, 18 is a pull rod, and 19 is an adjusting bolt. DETAILED DESCRIPTION

[0030] The specific implementation of the present invention is described in detail below with reference to the accompanying drawings:

[0031] Embodiment 1:

[0032] like Figure 1 to Figure 6 As shown, a casting sand box turner includes a rotary unit, a bearing unit for bearing the sand box, a chute unit for falling sand, and a limit unit for limiting the sand box. The rotary unit includes a bracket 1 on both sides and a rotary shaft 2 rotatably arranged between the brackets 1 on both sides. The rotary shaft 2 is located at the top of the bracket 1, and slots 14 are symmetrically provided at both ends of the rotary shaft 2.

[0033] The bearing unit is arranged at the lower part of the rotating shaft 2 with the radial direction of the rotating shaft 2 as the symmetry center. The bearing unit includes lower clamping seats 3 on both sides, connecting plates 4 fixedly connecting the clamping seats on both sides, and an "L"-shaped bracket 5 fixedly arranged under the connecting plates 4. The bracket 5 is used to carry the sand box;

[0034] Specifically, the bracket 5 includes three support plates 51 arranged at intervals and four reinforcing plates 52 connecting the three support plates 51. The cross-section of the support plate 51 is "L"-shaped. The vertical end of the support plate 51 is fixedly connected to the connecting plate 4, and the cross-section of the horizontal end of the support plate 51 after being connected to the reinforcing plate 52 is grid-shaped.

[0035] A swivel lifting lug 6 is provided on one side of the bracket 5. In the present embodiment, a crane is also provided. When the box turning and sand dumping operation is performed, the hook of the crane is hooked on the swivel lifting lug 6, and the crane is used as the power to drive the bracket 5 to turn over along the swivel axis 2, thereby performing the box turning and sand dumping operation.

[0036] In order to prevent the bracket 5 from directly contacting the ground and causing wear, a foot 7 is provided at the bottom of the bracket 5. The number of the foot 7 is two. The foot 7 is a plate-like structure made of rubber. The length direction of the foot 7 is the same as the layout direction of the reinforcing plate 52. The lower end surface of the foot 7 is flush with the lower end surface of the bracket 1, so that the bracket 5 is suspended and does not directly contact the ground.

[0037] The chute unit is arranged on the upper part of the rotating shaft 2 with the radial direction of the rotating shaft 2 as the center of symmetry. The chute unit includes upper clamping seats 8 on both sides and chutes 9 connecting the upper clamping seats 8 on both sides. The upper clamping seats 8 and the lower clamping seats 3 have the same structure. The upper clamping seats 8 and the lower clamping seats 3 are buckled in the clamping groove 14, and the upper clamping seats 8 and the lower clamping seats 3 are fastened by bolts.

[0038] In this embodiment, the chute 9 is used to receive the molding sand poured out of the sand box. The chute 9 includes an integrally formed flat plate portion 91 and a side plate portion 92. The cross-section of the flat plate portion 91 is an inverted "convex" shape. The side plate portions 92 are fixedly arranged on the left and right sides of the flat plate portion 91. The cross-section of the side plate portion 92 is a right-angled trapezoid. The side plate portion 92 is vertically fixed on the upper clamping seat 8.

[0039] In order to prevent the molding sand from sliding out of the chute 9 when pouring, the lower end of the flat plate part 91 extends beyond the upper seat 8 to the position of the connecting plate 4, and is bolted to the connecting plate 4. After the flat plate part 91 is connected to the connecting plate 4, the cross-section is "L" shaped, so that the three sides of the chute 9 are closed and only the upper side is open. When overturning, the molding sand slides out from the upper side of the chute 9, avoiding the molding sand from sliding out from the lower end of the chute 9 when pouring.

[0040] The limit unit is rotatably arranged in the chute 9, and the limit unit includes a U-shaped limit frame 10 and a grating plate 11 arranged in the limit frame 10. Specifically, a fixing rod 15 is inserted between the side plate parts 92 on both sides. The length of the fixing rod 15 is the same as the width of the chute 9. Bolts are arranged at both ends of the fixing rod 15 to limit its left and right movement. The limit frame 10 is rotatably arranged on the fixing rod 15, and the width of the limit frame 10 is less than the length of the fixing rod 15.

[0041] In this embodiment, the limit frame 10 and the bracket 5 correspond to each other up and down and are arranged in parallel. The sand box is clamped and fixed between the limit frame 10 and the bracket 5 for flipping. A plurality of connecting rods 12 are detachably arranged between the limit frame 10 and the bracket 5. The connecting rod 12 includes a vertical rod portion 121 and a clamping plate portion 122. The upper and lower ends of the vertical rod portion 121 are respectively connected to the limit frame 10 and the bracket 5 by bolts. When the box is turned over, the clamping plate portion 122 clamps the sand box.

[0042] In order to avoid the spread of dust when turning over the boxes and emptying the sand, and to ensure the cleanliness of the workshop environment, a hollow dust hood 13 with a "U"-shaped cross-section is detachably provided on the upper part of the limit frame 10 by bolts, and the air outlet of the dust hood 13 faces upward.

[0043] Specifically, the dust suction hood 13 is arranged around the periphery of the limit frame 10. The dust suction hood 13 includes a hood body 131, a plurality of air holes 132 opened on the inner side wall of the hood body 131, and an air duct joint 133 arranged on the outer side wall of the hood body 131. The air holes 132 are rectangular holes and are located on the inner walls of three sides of the hood body 131. At the position corresponding to each air hole 132 on the inner side wall of the hood body 131, a wind guiding plate 16 is provided. The wind guiding plate 16 is bent upward in an "L" shape. The cooperation between the wind guiding plate 16 and the air hole 132 makes the opening of the air hole 132 face upward, which can prevent the molding sand from falling into the air hole 132 during sand pouring and ensure the accuracy of the dust suction operation.

[0044] In this embodiment, a dust removal fan is also provided. The dust removal fan is connected to the air duct joint 133 through an air duct. During the operation of the dust suction hood 13, the raised dust diffuses upward. During the process of turning over the sand box, the opening direction of the air hole 132 changes continuously to facilitate the suction of the dust.

[0045] To optimize the product structure, in this embodiment, pull rods 18 are further arranged on both sides of the bracket 5. The lower end cross section of the pull rod 18 is hooked on the support plate 51 in a "ㄥ" shape, and the upper end cross section of the pull rod 18 is in a "┌" shape. An adjusting bolt 19 is arranged at the upper end of the pull rod 18, and the pull rod 18 further plays a role in strengthening the sand box.

[0046] In the initial state, the bracket 1 is fixed to the ground through anchor bolts; the upper end of the vertical rod portion 121 is not installed with the limit frame 10, and the limit frame 10 is turned over until it leans against the chute 9; the pull rod 18 is not installed with the bracket 5.

[0047] During the operation of turning over the sand box and pouring sand, the sand box is hoisted and placed on the bracket 5, the limit frame 10 is lowered and abutted against the upper end of the sand box, the upper end of the vertical rod portion 121 is fixedly connected to the limit frame 10 through bolts. After connection, the clamping plate portion 122 clamps on the side wall of the sand box, thereby restricting the position of the sand box. Then, the lower end of the pull rod 18 is installed on the bracket 5 and the upper end is clamped on the side wall of the sand box, and the adjusting bolt 19 is tightened to abut against the side wall of the sand box to fix the position of the pull rod 18;

[0048] After the sand box is fixed on the bracket 5, the lifting hook of the crane is hooked on the rotary lifting lug 6, the crane is started to turn over the sand box and pour sand, the dust removal fan is started, and the dust suction hood 13 performs dust removal. During the process of turning over the bracket 5, the molding sand in the sand box is continuously poured into the chute 9 and then poured into the sand bin through the chute 9. The grid plate 11 plays a role in separating the molding sand and the casting at one time, and thus the casting remains in the sand box.

[0049] Embodiment 2:

[0050] As Figure 7As shown, this embodiment is basically the same as the first embodiment, and the similarities are not repeated here. The difference is that: in this embodiment, no crane is provided as the turning power, and a reduction motor 17 is provided on the bracket 1 on one side. The reduction motor 17 is connected with the rotating shaft 2 in a transmission manner, and the reduction motor 17 is used as the turning power to perform the box turning and sand dumping operation.

[0051] The embodiments described above are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made according to the structures, features and principles described in the patent scope of the present invention should be included in the scope of the patent application of the present invention.

Claims

1. A casting sand box turning machine, characterized in that: It includes a rotary unit, a bearing unit, a chute unit and a limit unit. The rotary unit includes brackets (1) on both sides and a rotary shaft (2) rotatably arranged between the brackets (1) on both sides; The lower part of the rotary shaft (2) is provided with the bearing unit. The bearing unit includes lower chucks (3) on both sides, a connecting plate (4) connecting the chucks on both sides, and an "L"-shaped bracket (5) arranged below the connecting plate (4). A rotary lifting lug (6) is arranged on one side of the bracket (5), and a foot pad (7) is arranged at the bottom of the bracket (5); The bracket (5) includes a plurality of pallet boards (51) arranged at intervals and a reinforcing plate (52) connecting the plurality of pallet boards (51). The cross-section of the pallet board (51) is "L"-shaped. The vertical end of the pallet board (51) is fixedly connected to the connecting plate (4), and the horizontal end of the pallet board (51) is connected to the reinforcing plate (52) and the cross-section is in a grid shape; The upper part of the rotary shaft (2) is provided with the chute unit. The chute unit includes upper chucks (8) on both sides and a chute (9) connecting the upper chucks (8) on both sides. The upper chucks (8) have the same structure as the lower chucks (3), and are buckled on the rotary shaft (2) and fastened by bolt connection; The limit unit is rotatably arranged in the chute (9). The limit unit includes a limit frame (10) and a grid plate (11) arranged in the limit frame (10). A plurality of connecting rods (12) are detachably arranged between the limit frame (10) and the bracket (5). The connecting rod (12) includes a vertical rod part (121) and a clamping plate part (122). The upper and lower ends of the vertical rod part (121) are respectively connected to the limit frame (10) and the bracket (5) by bolts. When the sand box is turned over, the clamping plate part (122) clamps the sand box; A hollow dust suction hood (13) with a "U"-shaped cross-section is arranged on the upper part of the limit frame (10), and the air outlet of the dust suction hood (13) faces upwards; Pull rods (18) are also arranged on both sides of the bracket (5). The lower end of the pull rod (18) has a "ㄣ"-shaped cross-section and is hooked on the pallet board (51). The upper end of the pull rod (18) has a "┌"-shaped cross-section, and an adjusting bolt (19) is arranged at the upper end of the pull rod (18).

2. A casting sand box turning machine according to claim 1, characterized in that: The rotary shaft (2) is located at the top of the bracket (1), and clamping grooves (14) are symmetrically arranged at both ends of the rotary shaft (2); The upper chucks (8) and the lower chucks (3) are buckled up and down in the clamping grooves (14), and are fastened by bolt connection between the upper chucks (8) and the lower chucks (3).

3. A casting sand box turning machine according to claim 2, characterized in that: The foot pad (7) is a plate-like structure made of rubber. The length direction of the foot pad (7) is the same as the layout direction of the reinforcing plate (52), and the lower end surface of the foot pad (7) is flush with the lower end surface of the bracket (1).

4. The casting sand box turning machine according to claim 1, characterized in that: The chute (9) includes an integrally formed flat plate part (91) and a side plate part (92). The cross-section of the flat plate part (91) is an inverted "convex" shape. The side plate parts (92) are fixedly arranged on the left and right sides of the flat plate part (91). The cross-section of the side plate part (92) is a right trapezoid, and the side plate part (92) is vertically fixedly arranged on the upper chuck (8); The lower end of the flat plate portion (91) is bolted to the connecting plate (4); after the flat plate portion (91) and the connecting plate (4) are connected, the cross-section is in an "L" shape.

5. The casting sand box turning machine according to claim 4, characterized in that: A fixing rod (15) is inserted between the side plates (92) at both sides, and bolts are provided at both ends of the fixing rod (15) to limit movement; The cross section of the limiting frame (10) is in the shape of a Chinese character “Yu”, and the limiting frame (10) is rotatably arranged on the fixing rod (15).

6. A casting sand box turning machine according to claim 5, characterized in that: The limiting frame (10) and the bracket (5) correspond to each other vertically and are arranged in parallel.

7. The casting sand box turning machine according to claim 1, characterized in that: The dust hood (13) and the limiting frame (10) are detachably connected, the dust hood (13) is arranged around the limiting frame (10), and the dust hood (13) comprises a hood body (131), a plurality of air holes (132) provided on the inner wall of the hood body (131), and an air duct joint (133) provided on the outer wall of the hood body (131); The air holes (132) are rectangular holes, and an air guide plate (16) is provided on the inner side wall of the cover body (131) at a position corresponding to each air hole (132), and the air guide plate (16) is bent upward in an "L" shape to control the air intake direction.

8. The casting sand box turning machine according to claim 1, characterized in that: A reduction motor (17) is provided on one side of the bracket (1), and the reduction motor (17) is transmission-connected to the rotary shaft (2).

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