Lost foam sand box structure

Abstract

The utility model discloses an evanescent mode sand box structure which comprises a sand box and a mounting shell, the outer wall of the sand box is fixedly sleeved with a limiting frame, a first clamping plate is fixedly connected between the inner walls of the mounting shell, a plurality of sliding grooves are formed in the top of the first clamping plate at equal intervals, and limiting rods are slidably connected into the sliding grooves. The bottom end of the limiting rod is fixedly connected with a clamping piece. According to the auxiliary limiting device, the multiple clamping pieces are slidably connected to the bottom of the first clamping plate, the multiple clamping pieces are clamped into the liquid injection opening of the casting model through the movable mounting shell, the multiple clamping pieces are driven by rotating the lead screw to move to be tightly attached to the inner wall of the liquid injection opening, and therefore auxiliary limiting is conducted on the casting model, the model does not need to be supported and limited all the time; and the guide shell can guide casting sand, the casting sand is prevented from entering the model, auxiliary positioning can be conveniently and automatically conducted on the casting model, the process of burying the model is conveniently simplified, and use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of lost foam sand boxes, in particular to a lost foam sand box structure. Background Art

[0002] In the casting process, there is a lost foam casting, which can make the model disappear during the casting process. It belongs to an evaporation type casting. First, a foam model with the same size and shape as the casting is manufactured. The model needs to be coated with refractory material to separate the molten metal from the sand to prevent sand sticking. The model is buried in the sand box with casting sand, and the molten metal is poured into the model from the injection port. Under the high-temperature metal solution, the foam model will be vaporized and disappear, and the solution will replace the space occupied by the original foam mold. After cooling and solidification, the required metal casting is obtained. The products of lost foam casting include cylinders and pipe fittings. These workpieces are provided with tubular injection ports. During the burying process, the foam model needs to be supported and kept vertical by the staff at all times, and the casting sand needs to be prevented from entering the interior of the model, which makes it inconvenient to put in the casting sand. Therefore, multiple staff members are required to cooperate in the operation. If the model is offset, it will affect the molding effect of the casting. It is not convenient to automatically assist in positioning the casting model, simplify the process of burying the model, and use it inconveniently. Utility Model Content

[0003] The utility model aims to provide a lost foam sand box structure to solve the problems raised in the above background technology.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A lost foam sand box structure comprises a sand box and a mounting shell, wherein a limit frame is fixedly sleeved on the outer wall of the sand box, a clamping plate is fixedly connected between the inner walls of the mounting shell, a plurality of slide grooves are equidistantly provided on the top of the clamping plate, the inner part of the slide groove is slidably connected to a limit rod, a clip is fixedly connected to the bottom end of the limit rod, a control module for synchronously controlling the plurality of clips is arranged on the inner wall of the mounting shell, support rods are slidably connected to both sides of the limit frame, adjacent ends of the two support rods are fixedly connected to the outer wall of the mounting shell, and limit modules for horizontally controlling the support rods are arranged on both sides of the limit frame.

[0006] Furthermore, the front side of the sand box is connected with an air exhaust port, and a reinforcing grid is fixedly sleeved on the outer wall of the sand box.

[0007] Preferably, a plurality of balls are rotatably connected to the top of the clip.

[0008] Furthermore, the limit module includes a socket, the bottom end of the socket is slidably connected to the bottom of the limit frame, two rectangular bars are symmetrically fixedly connected to the outer wall of the support rod, the support rod and the rectangular bar both pass through the adjacent socket and are slidably connected thereto, and the opposite ends of the two support rods are fixedly connected with discs.

[0009] Further, a plurality of slots 2 are equidistantly provided on the outer wall of the support rod, a fixing screw 1 is screwed and connected on one side of the limit module, the fixing screw 1 passes through the adjacent slot 2 and is movably engaged with it, a plurality of slots 1 are equidistantly provided on both sides of the limit frame, the opposite sides of the two sockets are screwed and connected with fixing screws 2, the fixing screw 2 passes through the adjacent slot 1 and is movably engaged with it.

[0010] Furthermore, the regulating module includes a second clamping plate rotatably connected between the inner walls of the mounting shell, a plurality of regulating grooves are equidistantly provided on the top of the second clamping plate, the limiting rod passes through adjacent regulating grooves and is slidably connected thereto, a clamping ring is fixedly sleeved on the top end of the limiting rod, and the bottom of the clamping ring is in contact with the second clamping plate.

[0011] Furthermore, a screw rod is fixedly connected to the top of the regulating module, a limit seat is fixedly connected to the top of the mounting shell, a limit block is slidably connected to the inside of the limit seat, and the screw rod passes through the limit block and is screwed thereto.

[0012] Further, a guide shell is fixedly sleeved on the outer wall of the installation shell, the top end of the screw rod passes through the guide shell and extends to the top, and the top end of the screw rod is fixedly sleeved with a torsion block.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. A plurality of clips are slidably connected to the bottom of the first clamping plate, and a movable mounting shell clamps the plurality of clips into the inside of the liquid injection port of the casting model. The screw rod is rotated to drive the plurality of clips to move and to be close to the inner wall of the liquid injection port, thereby assisting in limiting the casting model. There is no need to always support and limit the model, and the liquid injection ports of various apertures can be limited. The guide shell can guide the casting sand to prevent the casting sand from entering the inside of the model, so as to automatically assist in positioning the casting model, simplify the process of burying the model, and facilitate use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the side section structure of the installation shell of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the clip of the utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the card holder of the utility model;

[0019] Figure 5 It is a schematic diagram of the side section structure of the limiting frame of the utility model.

[0020] In the figure: 10, sand box; 11, exhaust port; 12, reinforced grid; 13, limit frame; 131, slot one; 14, support rod; 141, rectangular bar; 142, disc; 143, slot two; 15, limit module; 151, holder; 152, fixing screw one; 153, fixing screw two; 20, mounting shell; 21, card plate one; 211, slide groove; 22, limit rod; 221, snap ring; 23, clip; 231, ball bearing; 24, control module; 241, card plate two; 242, control slot; 243, limit seat; 244, screw; 245, limit block; 246, torsion block; 247, guide shell. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figures 1 to 5In the embodiment of the utility model, a lost foam sand box structure includes a sand box 10 and a mounting shell 20. A limit frame 13 is fixedly sleeved on the outer wall of the sand box 10. A clamping plate 21 is fixedly connected between the inner walls of the mounting shell 20. A plurality of slide grooves 211 are equidistantly provided on the top of the clamping plate 21. A limit rod 22 is slidably connected inside the slide groove 211. A clip 23 is fixedly connected to the bottom end of the limit rod 22. A control module 24 for synchronously controlling the plurality of clips 23 is arranged on the inner wall of the mounting shell 20. Support rods 14 are slidably connected to both sides of the limit frame 13. The adjacent ends of the two support rods 14 are fixedly connected to the outer wall of the mounting shell 20. Limiting modules 15 for horizontally regulating the support rod 14 are arranged on both sides. The front side of the sand box 10 is connected with an air suction port 11. A reinforcing grid 12 is fixedly sleeved on the outer wall of the sand box 10. The air suction port 11 is used to pump negative pressure into the sand body inside the sand box 10. The reinforcing grid 12 is used to strengthen the overall strength of the sand box 10. A plurality of balls 231 are rotatably connected to the top of the clip 23. The balls 231 can reduce the friction between the clip 23 and the bottom of the card plate 21, making the regulation smoother. The limiting module 15 includes a card seat 151. The bottom end of the card seat 151 is slidably connected to the bottom of the limiting frame 13. Two symmetrically fixedly connected to the outer wall of the support rod 14 A rectangular strip 141 is provided, and the support rod 14 and the rectangular strip 141 both penetrate the adjacent card seat 151 and are slidably connected thereto. The opposite ends of the two support rods 14 are fixedly connected with a disc 142. The rectangular strip 141 cooperates with the limiting module 15 to slide and limit the support rod 14, so that the support rod 14 cannot rotate. The disc 142 prevents the support rod 14 from being separated from the limiting module 15. A plurality of card slots 143 are equidistantly provided on the outer wall of the support rod 14. A fixing screw 152 is screwed and connected on one side of the limiting module 15. The fixing screw 152 penetrates the adjacent card slot 143 and is movably connected thereto. A plurality of card slots 143 are equidistantly provided on both sides of the limiting frame 13. 31, the opposite sides of the two clamping seats 151 are screwed and connected with the fixing screws 153, the fixing screws 153 penetrate the adjacent slot 131 and are movably connected thereto, the two clamping seats 151 can be slid to adjust the position of the mounting shell 20, and the two support rods 14 can be pulled to slide inside the clamping seats 151, so that the mounting shell 20 moves to the vicinity of the top of the workpiece injection road, so that the multiple clips 23 are inside the injection port, and then the fixing screws 152 can be rotated to fix the position of the support rods 14 in relation to the adjacent slot 143, and the fixing screws 153 can be rotated to penetrate the adjacent slot 131 to fix the position of the limit clamping seat 151;

[0023] The regulating module 24 includes a second card plate 241 rotatably connected to the inner wall of the mounting shell 20, a plurality of regulating grooves 242 are equidistantly provided on the top of the second card plate 241, the limiting rod 22 passes through adjacent regulating grooves 242 and is slidably connected thereto, a clamping ring 221 is fixedly sleeved on the top of the limiting rod 22, and the bottom of the clamping ring 221 contacts the second card plate 241. When the second card plate 241 is rotated, the limiting rod 22 can be moved inside the slide groove 211 through the regulating groove 242, thereby synchronously driving the plurality of limiting rods 22 and the clip 23 to move, a screw rod 244 is fixedly connected to the top of the regulating module 24, and a limiting seat 243 is fixedly connected to the top of the mounting shell 20. The internal sliding connection 243 is limited to the block 245, and the screw rod 244 passes through the block 245 and is screwed together with it. By rotating the screw rod 244, the second card plate 241 can be driven to rotate, and the block 245 can be driven to slide inside the limit seat 243, so that the position of the second card plate 241 can be fixed at any time. A guide shell 247 is fixedly sleeved on the outer wall of the mounting shell 20. The top end of the screw rod 244 passes through the guide shell 247 and extends to the top. The top end of the screw rod 244 is fixedly sleeved with a torsion block 246. The guide shell 247 can guide the sand body on the top of the mounting shell 20 to prevent accumulation. The screw rod 244 can be moved from the outside by rotating the torsion block 246.

[0024] Specifically, the casting model is first placed inside the sand box 10. The casting model can be placed at an angle first. The two clamping seats 151 can be slid to adjust the position of the mounting shell 20, and the two support rods 14 can be pulled to slide inside the clamping seats 151, so that the mounting shell 20 moves to the vicinity of the top of the workpiece injection opening, so that multiple clips 23 are inside the injection port, and the screw rod 244 is rotated to drive the multiple clips 23 to move synchronously until they are tightly attached to the inner wall of the casting model injection port. During the process, the casting model can be assisted in positioning and the uprightness of the casting model can be ensured. The mounting shell 20 cooperates with the guide shell 247 to prevent the sand body from entering the casting model.

[0025] Embodiment 1

[0026] like Figure 2 As shown, in this embodiment, the regulating module 24 includes a second clamping plate 241 rotatably connected between the inner walls of the mounting shell 20, a plurality of regulating grooves 242 are equidistantly provided on the top of the second clamping plate 241, the limiting rod 22 passes through adjacent regulating grooves 242 and is slidably connected thereto, a retaining ring 221 is fixedly sleeved on the top of the limiting rod 22, the bottom of the retaining ring 221 contacts the second clamping plate 241, a screw rod 244 is fixedly connected to the top of the regulating module 24, a limiting seat 243 is fixedly connected to the top of the mounting shell 20, a limiting block 245 is slidably connected to the internal of the limiting seat 243, and the screw rod 244 passes through the limiting block 245 and is screwed together therewith.

[0027] In this embodiment, the second card plate 241 can be driven to rotate by rotating the screw rod 244. When the second card plate 241 is rotated, the limit rod 22 can be moved inside the slide groove 211 through the regulating groove 242, thereby synchronously driving multiple limit rods 22 and clips 23 to move, and driving the limit block 245 to slide inside the limit seat 243, so that the position of the second card plate 241 can be fixed at any time, which is convenient for auxiliary positioning of the casting model.

[0028] like Figure 2 As shown, in this embodiment, a guide shell 247 is fixedly sleeved on the outer wall of the mounting shell 20 , the top end of the screw rod 244 passes through the guide shell 247 and extends to the top, and a torsion block 246 is fixedly sleeved on the top end of the screw rod 244 .

[0029] During specific implementation, the guide shell 247 can guide the sand body on the top of the mounting shell 20 to prevent accumulation, and the rotating torsion block 246 can move the screw rod 244 from the outside.

[0030] Embodiment 2

[0031] On the basis of the first embodiment, in order to fully adjust and limit the position of the mounting shell 20, so as to achieve the positioning of various special-shaped casting models, and make the limiting sufficiently stable.

[0032] like Figure 4-5 As shown, in this embodiment, the limiting module 15 includes a socket 151, the bottom end of the socket 151 is slidably connected to the bottom of the limiting frame 13, two rectangular strips 141 are symmetrically fixedly connected to the outer wall of the support rod 14, the support rod 14 and the rectangular strip 141 both penetrate the adjacent socket 151 and are slidably connected thereto, the opposite ends of the two support rods 14 are fixedly connected with a disc 142, a plurality of slots 143 are equidistantly provided on the outer wall of the support rod 14, a fixing screw 152 is screwedly connected to one side of the limiting module 15, the fixing screw 152 penetrates the adjacent slot 143 and is movably engaged therewith, a plurality of slots 131 are equidistantly provided on both sides of the limiting frame 13, the opposite sides of the two sockets 151 are screwedly connected with the fixing screw 153, the fixing screw 153 penetrates the adjacent slot 131 and is movably engaged therewith.

[0033] During specific implementation, the position of the mounting shell 20 can be adjusted by sliding the two clamping seats 151, and the two support rods 14 can be pulled to slide inside the clamping seat 151, so that the mounting shell 20 moves to the vicinity of the top of the workpiece injection opening, so that multiple clips 23 are inside the injection port, and then the fixing screw 152 can be rotated to fix the position of the support rod 14 in relation to the adjacent clamping slot 143, and the fixing screw 153 can be rotated to penetrate the adjacent clamping slot 1 131 to fix the position of the limit clamping seat 151.

[0034] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0035] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A lost foam sand box structure, characterized in that: It includes a sand box and a mounting shell, the outer wall of the sand box is fixedly sleeved with a limit frame, the inner walls of the mounting shell are fixedly connected with a clamping plate, the top of the clamping plate is equidistantly provided with a plurality of clamping rings, the inner part of the clamping ring is slidably connected to a limit rod, the bottom end of the limit rod is fixedly connected with a clamp, the inner wall of the mounting shell is provided with a control module for synchronously controlling the plurality of clamps, both sides of the limit frame are slidably connected with support rods, the adjacent ends of the two support rods are fixedly connected to the outer wall of the mounting shell, and both sides of the limit frame are provided with limit modules for horizontally controlling the support rods.

2. The lost foam sand box structure according to claim 1, characterized in that: The front side of the sand box is connected with an air exhaust port, and a reinforcing grid is fixedly sleeved on the outer wall of the sand box.

3. The lost foam sand box structure according to claim 1, characterized in that: The top of the clip is rotatably connected with a plurality of balls.

4. The lost foam sand box structure according to claim 1, characterized in that: The limit module includes a socket, the bottom end of which is slidably connected to the bottom of the limit frame, two rectangular bars are symmetrically fixedly connected to the outer wall of the support rod, the support rod and the rectangular bar both penetrate the adjacent limit module and are slidably connected thereto, and discs are fixedly connected to the opposite ends of the two support rods.

5. The lost foam sand box structure according to claim 4, characterized in that: A plurality of slots 2 are equidistantly provided on the outer wall of the support rod, a fixing screw 1 is screwed and connected on one side of the limit module, the fixing screw 1 passes through the adjacent slot 2 and is movably engaged with it, a plurality of slots 1 are equidistantly provided on both sides of the limit frame, the opposite sides of the two sockets are screwed and connected with fixing screws 2, the fixing screw 2 passes through the adjacent slot 1 and is movably engaged with it.

6. The lost foam sand box structure according to claim 1, characterized in that: The regulating module includes a second clamping plate rotatably connected between the inner walls of the mounting shell, a plurality of regulating grooves are equidistantly provided on the top of the second clamping plate, the limit rod passes through adjacent regulating grooves and is slidably connected thereto, a clamping ring is fixedly sleeved on the top end of the limit rod, and the bottom of the clamping ring is in contact with the second clamping plate.

7. The lost foam sand box structure according to claim 6, characterized in that: The top of the regulating module is fixedly connected with a screw rod, the top of the mounting shell is fixedly connected with a limit seat, the inner part of the limit seat is slidably connected with a limit block, and the screw rod passes through the limit block and is screwed therewith.

8. The lost foam sand box structure according to claim 7, characterized in that: A guide shell is fixedly sleeved on the outer wall of the installation shell, the top end of the screw rod passes through the guide shell and extends to the top, and a torsion block is fixedly sleeved on the top end of the screw rod.

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