Sand mold retaining device for casting section of molding machine

Abstract

The utility model belongs to the technical field of molding machines, and particularly relates to a molding machine casting section sand mold retaining device which comprises a rack and a bottom plate arranged along the length direction of the rack, a plurality of sand molds are adjacently arranged on the bottom plate, and clamping plates which move back and forth along the length direction of the rack are respectively arranged on two sides of the bottom plate. A plurality of clamping mechanisms used for pushing the clamping plates to move to clamp or loosen the sand mold are symmetrically arranged on the two sides of the rack, and a driving mechanism used for driving the clamping plates to move in a reciprocating mode is arranged on the rack. A casting device is arranged above the rack, a molding chamber is arranged at one end of the rack, and a sand mold holding mechanism is arranged between the molding chamber and the casting device and is used for descending to press a sand mold. According to the device, the problems of frequent box leakage and production stagnation caused by the fact that the sand molds are pulled back and deviated due to the fact that the clamping plates are pulled back, a sprue gate is dislocated / gaps between the sand molds are increased can be avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of molding machines, and particularly relates to a sand mold holding device for the pouring section of a molding machine. Background Art

[0002] The automatic casting production line solves the problems existing in the traditional casting production method, such as uneven sand mold compactness, low production efficiency, and difficult core setting. In the front section of the molding box, the sand mold is generally transported to a designated position by a sand mold conveyor to receive molten metal for casting. When the sand mold conveyor transports the sand mold, it is a continuous operation to achieve the automatic production of the casting operation, and during the transmission process, it is required to firmly clamp the sand mold.

[0003] In the prior art, the sand mold is generally transported by a reciprocating motion method, that is, there are clamping plates arranged on the sand mold conveyor, and the sand mold is clamped and transported by the clamping plates. The clamping plates can reciprocate. When the clamping plates move forward, the clamping plates clamp the sand mold and transport it forward synchronously. On the contrary, when the clamping plates move backward, the clamping plates release the clamping of the sand mold, thereby realizing the single-direction transportation of the sand mold.

[0004] In the prior art, since there will still inevitably be a certain clamping force acting on the sand mold after the clamping plates release the sand mold, it will inevitably pull the sand mold backward, resulting in a certain offset of the sand mold each time. Even an offset of 0.5 - 1 mm will cause the pouring gate to be misaligned, resulting in frequent leakage of the pouring molten iron and production stagnation. Summary of the Utility Model

[0005] In view of the technical problems existing in the background art, the utility model provides a sand mold holding device for the pouring section of a molding machine.

[0006] To achieve the above object, the technical solution provided by the utility model is as follows:

[0007] A sand mold holding device for the pouring section of a molding machine includes a frame and a bottom plate arranged along the length direction of the frame. A plurality of sand molds are arranged adjacent to each other on the bottom plate. Clamping plates that reciprocate along the length direction of the frame are respectively arranged on both sides of the bottom plate. A plurality of clamping mechanisms for pushing the clamping plates to move to clamp or release the sand mold are symmetrically arranged on both sides of the frame. A driving mechanism for driving the clamping plates to reciprocate is arranged on the frame; a pouring device is arranged above the frame, a molding chamber is arranged at one end of the frame, and a sand mold holding mechanism is arranged between the molding chamber and the pouring device. The sand mold holding mechanism is used to descend and press the sand mold.

[0008] Optionally, the sand mold holding mechanism includes a fixed seat and a pressing cylinder. The pressing cylinder is arranged at the bottom end of the fixed seat, and one end of the piston rod of the pressing cylinder is connected to a pressing plate.

[0009] Optionally, a pneumatic controller is provided on the fixed seat, and the air pipe on the pneumatic controller is connected to the pressing cylinder.

[0010] Optionally, a heat insulation plate is provided at the bottom of the side of the fixed seat close to the pouring equipment.

[0011] Optionally, a liquid separation plate is slidably provided on the first piston rod. A spring is sleeved on the first piston rod between the liquid separation plate and the pressing plate. The liquid separation plate extends obliquely towards the bottom end, and the bottom end of the liquid separation plate is slightly lower than the bottom end of the pressing plate.

[0012] Optionally, the driving mechanism includes swing rods arranged at intervals in pairs. The two swing rods are connected by a cross bar. The middle of the swing rod is rotationally connected to the frame through a first rotating shaft, and the upper end of the swing rod is movably connected to the clamping plate through a second rotating shaft; a hydraulic cylinder is hinged at the bottom end of the frame, and the second piston rod of the hydraulic cylinder is hinged to the middle section of the cross bar. The hydraulic cylinder can expand and contract to drive the swing rod to swing, thereby realizing the longitudinal reciprocating movement of the clamping plate.

[0013] Optionally, the clamping mechanism includes telescopic cylinders fixed on both sides of the frame. A ball head is rotatably arranged at the end of the piston rod of the telescopic cylinder. A clamping groove is arranged on the outer side of the clamping plate, and the ball head is arranged in the clamping groove.

[0014] Optionally, the clamping mechanism includes a medium filling mechanism fixed on both sides of the frame. A clamping groove is arranged on the outer side of the clamping plate, and a bladder is arranged in the clamping groove. The medium filling mechanism is connected to the bladder.

[0015] The utility model has the following advantages and beneficial effects:

[0016] In the utility model, a sand mold holding device for the pouring section of a molding machine is designed. By arranging a sand mold holding mechanism between the molding chamber and the pouring equipment, the sand mold holding mechanism is used to lower and press the sand mold. When the clamping plate transports forward, the clamping plate clamps the sand mold and transports it forward synchronously. On the contrary, when the clamping plate transports backward, the sand mold is fixed by the sand mold holding mechanism. Even if there is still an inevitable certain clamping force acting on the sand mold after the clamping plate releases the sand mold, the sand mold will not be pulled backward, avoiding the problems that the sand mold is pulled back and offset when the clamping plate retracts, causing the pouring gate to be misaligned and resulting in frequent leakage of the pouring molten iron and production stagnation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is the front view of the sand mold holding device for the pouring section of the molding machine provided by the utility model;

[0018] Figure 2 is the top view of the sand mold holding device for the pouring section of the molding machine provided by the utility model;

[0019] Figure 3 isFigure 1 Enlarged view of a partial structure;

[0020] Figure 4 Connection structure diagram of the clamping plate and the driving mechanism provided by the present utility model;

[0021] Figure 5 is Figure 4 bottom view of;

[0022] Figure 6 is Figure 4 top view of;

[0023] Figure 7 One of the connection structure diagrams of the clamping plate and the clamping mechanism provided by the present utility model;

[0024] Figure 8 Another connection structure diagram of the clamping plate and the clamping mechanism provided by the present utility model;

[0025] Icon: 1 - Modeling room, 2 - Fixed seat, 21 - Pneumatic controller, 22 - Air pipe, 3 - Pressing cylinder, 31 - First piston rod, 32 - Pressing plate, 33 - Liquid separation plate, 34 - Spring, 35 - Heat insulation plate, 4 - Pouring equipment, 41 - Liquid outlet pipe, 5 - Sand mold, 6 - Frame, 61 - First hinge seat, 62 - Second hinge seat, 63 - Mounting seat, 64 - Bottom plate, 7 - Clamping plate, 71 - Card slot, 72 - Bladder, 73 - Medium filling mechanism, 8 - Hydraulic cylinder, 81 - Second piston rod, 9 - Swing rod, 91 - Cross bar, 92 - First rotating shaft, 93 - Second rotating shaft, 10 - Telescopic cylinder, 101 - Ball head. Detailed implementation manners

[0026] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model.

[0027] Therefore, the following detailed description of the embodiments of the present utility model provided in the drawings is not intended to limit the scope of the present utility model claimed, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0028] Embodiment

[0029] As Figures 1 to 8As shown in the figure, a sand mold holding device in the pouring section of a molding machine includes a frame 6 and a bottom plate 64 arranged along the length direction of the frame 6. A number of sand molds 5 are arranged adjacent to each other on the bottom plate 64, and the sand molds 5 can be slidably transported on the bottom plate 64. Clamping plates 7 that reciprocate along the length direction of the frame 6 are respectively arranged on both sides of the bottom plate 64. A number of clamping mechanisms for pushing the clamping plates 7 to move to clamp or release the sand molds 5 are symmetrically arranged on both sides of the frame 6. A driving mechanism for driving the clamping plates 7 to reciprocate is arranged on the frame 6. A pouring device 4 is arranged above the frame 6, and the pouring device 4 has a liquid outlet pipe 41. A molding chamber 1 is arranged at one end of the frame 6, and a sand mold holding mechanism is arranged between the molding chamber 1 and the pouring device 4. The sand mold holding mechanism is used to descend and press the sand mold 5.

[0030] When the clamping plate 7 transports towards the molding chamber 1, the clamping plate 7 clamps the sand mold 5 and synchronously conveys it forward. On the contrary, when the clamping plate 7 transports in the direction away from the molding chamber 1, the sand mold 5 is pressed and fixed by the sand mold holding mechanism. Even if there will still inevitably be a certain clamping force acting on the sand mold 5 after the clamping plate 7 releases the sand mold 5, it will not pull the sand mold 5 backward, avoiding a certain offset that occurs to the sand mold 5 each time, causing the pouring port to be misaligned, resulting in frequent leakage of the pouring molten iron and production stagnation.

[0031] In the present utility model, the sand mold holding mechanism includes a fixed seat 2 and a pressing air cylinder 3. The pressing air cylinder 3 is arranged at the bottom end of the fixed seat 2. The end of the piston rod 31 of the pressing air cylinder 3 is connected to a pressing plate 32. Two groups of pressing air cylinders 3 are symmetrically arranged, which can increase the pressing force.

[0032] Furthermore, a pneumatic controller 21 is arranged on the fixed seat 2, and an air pipe 22 on the pneumatic controller 21 is connected to the pressing air cylinder 3, so as to automatically control the action of the pressing air cylinder 3.

[0033] Furthermore, a heat insulation plate 35 is arranged at the bottom of the side of the fixed seat 2 close to the pouring device 4 to achieve heat insulation for components such as the pressing air cylinder 3 and play a protective role.

[0034] Furthermore, a liquid separation plate 33 is slidably arranged on the two piston rods 31 of the two pressing air cylinders 3. A spring 34 is sleeved on the piston rod 31 between the liquid separation plate 33 and the pressing plate 32. The liquid separation plate 33 extends obliquely downward towards the bottom end, and the bottom end of the liquid separation plate 33 is slightly lower than the bottom end of the pressing plate 32. When the pressing air cylinder 3 descends, the liquid separation plate 33 first contacts the sand mold 5, and then the pressing plate 32 contacts the sand mold 5 to press. The liquid separation plate 33 is closer to the pouring device 4 for protection to prevent molten liquid from splashing during casting. When the pressing air cylinder 3 contracts, the pressing plate 32 and the liquid separation plate 33 are lifted, and the upper end of the liquid separation plate 33 abuts against the bottom end of the heat insulation plate 35 to achieve sealing. The combination of the liquid separation plate 33 and the heat insulation plate 35 thus achieves a better heat insulation effect.

[0035] AsFigures 4 to 6 As shown in the figure, as a preferred embodiment of the present utility model, the driving mechanism includes swing rods 9 arranged at intervals in pairs. A cross bar 91 is connected between the two swing rods 9. Second hinge seats 62 are respectively arranged at the bottom ends on both sides of the frame 6. The middle of the swing rod 9 is rotationally connected to the second hinge seat 62 at the bottom end of the frame 6 through a first rotating shaft 92. The upper end of the swing rod 9 is movably connected to the clamping plate 7 through a second rotating shaft 93. One end of the second rotating shaft 93 is rotationally connected to the swing rod 9, and the other end of the second rotating shaft 93 is slidably arranged in the through hole of the clamping plate 7, that is, the second rotating shaft 93 can rotate relative to the clamping plate 7, and at the same time, the clamping plate 7 can horizontally move a certain distance relative to the second rotating shaft 93. A first hinge seat 61 is arranged in the middle at the bottom end of the frame 6. A hydraulic cylinder 8 is hinged on the first hinge seat 61. The second piston rod 81 of the hydraulic cylinder 8 is hinged to the middle section of the cross bar 91. The hydraulic cylinder 8 can extend and retract to drive the swing rod 9 to swing, thereby realizing the longitudinal reciprocating movement of the clamping plate 7.

[0036] Of course, in addition to the swing rod 9 type driving mechanism, it can also be set as a telescopic type. For example, a hydraulic cylinder or other means can be set to drive the clamping plate 7 to horizontally move by telescoping.

[0037] As Figure 7 shown in the figure, as a preferred embodiment of the present utility model, the clamping mechanism includes telescopic cylinders 10 fixed on both sides of the frame 6. Mounting seats 63 are respectively arranged on both sides of the frame 6. The telescopic cylinders 10 are fixed on the mounting seats 63. A ball head 101 is rotatably arranged at the end of the piston rod of the telescopic cylinder 10. A clamping groove 71 is arranged on the outer side of the clamping plate 7. The ball head 101 is arranged in the clamping groove 71. By extending the telescopic cylinder 10, the ball head 101 presses the clamping plate 7 to drive the clamping plate 7 to clamp the sand mold 5, and then the driving mechanism drives the clamping plate 7 to move. When the clamping plate 7 moves, the clamping plate 7 slides relative to the ball head 101.

[0038] As Figure 7 shown in the figure, as another preferred embodiment of the present utility model, the clamping mechanism includes a medium filling mechanism 73 fixed on both sides of the frame 6. Mounting seats 63 are respectively arranged on both sides of the frame 6. The medium filling mechanism 73 is fixed on the mounting seats 63. A clamping groove 71 is arranged on the outer side of the clamping plate 7. A bladder 72 is arranged in the clamping groove 71. The medium filling mechanism 73 is connected to the bladder 72. The medium filling mechanism 73 is used to fill the bladder 72 with a medium, such as gas, hydraulic oil, etc., to drive the bladder 72 to expand and press the clamping plate 7, thereby driving the clamping plate 7 to clamp the sand mold 5, and then the driving mechanism drives the clamping plate 7 to move. When the clamping plate 7 moves, the clamping plate 7 slides relative to the bladder 72.

[0039] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, various modifications and variations can be made to the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A sand mold holding device for a casting section of a molding machine, comprising a frame and a bottom plate arranged along the length direction of the frame, a plurality of sand molds are arranged adjacent to each other on the bottom plate, and clamping plates are arranged on both sides of the bottom plate to reciprocate along the length direction of the frame, characterized in that : A number of clamping mechanisms for pushing the clamping plates to move and clamp or release the sand mold are symmetrically arranged on both sides of the frame, and a driving mechanism for driving the clamping plates to move back and forth is arranged on the frame; a pouring device is arranged above the frame, a molding chamber is arranged at one end of the frame, a sand mold holding mechanism is arranged between the molding chamber and the pouring device, and the holding mechanism is used to descend to press the sand mold.

2. The sand mold holding device for the casting section of a molding machine according to claim 1, characterized in that: The sand mold holding mechanism comprises a fixed seat and a clamping cylinder. The bottom end of the fixed seat is provided with a clamping cylinder, and one end of a piston rod of the clamping cylinder is connected to a pressing plate.

3. The sand mold holding device for the casting section of the molding machine according to claim 2, characterized in that: A pneumatic controller is arranged on the fixing seat, and an air pipe on the pneumatic controller is connected with a pressing cylinder.

4. The sand mold holding device for the casting section of a molding machine according to claim 2, characterized in that: A heat insulation board is arranged at the bottom of one side of the fixing seat close to the pouring equipment.

5. The sand mold holding device for the casting section of a molding machine according to claim 4, characterized in that: A liquid partition plate is slidably arranged on the piston rod, a spring is sleeved on the piston rod between the liquid partition plate and the pressure plate, the liquid partition plate extends obliquely toward the bottom end, and the bottom end of the liquid partition plate is slightly lower than the bottom end of the pressure plate.

6. The sand mold holding device for the casting section of a molding machine according to claim 1, characterized in that: The driving mechanism includes two rocker arms arranged at a distance from each other, the two rocker arms are connected by a cross bar, the middle of the rocker arms are rotatably connected to the frame by a rotating shaft 1, and the upper end of the rocker arms is movably connected to the splint by a rotating shaft 2; a hydraulic cylinder is hinged at the bottom end of the frame, a piston rod 2 of the hydraulic cylinder is hinged to the middle section of the cross bar, and the hydraulic cylinder can telescope to drive the rocker arms to swing, thereby realizing the longitudinal reciprocating movement of the splint.

7. The sand mold holding device for the casting section of a molding machine according to claim 1, characterized in that: The clamping mechanism comprises a telescopic cylinder fixed on both sides of the frame, a ball head is rotatably provided at the end of the piston rod of the telescopic cylinder, a clamping groove is provided on the outer side of the clamping plate, and the ball head is arranged in the clamping groove.

8. The sand mold holding device for the casting section of a molding machine according to claim 1, characterized in that: The clamping mechanism comprises a medium filling mechanism fixed on both sides of the frame, a clamping slot is arranged on the outer side of the clamping plate, a capsule is arranged in the clamping slot, and the medium filling mechanism is connected to the capsule.

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