Sand core molding equipment

Abstract

The utility model belongs to the technical field of casting equipment, and particularly relates to sand core molding equipment which comprises a feeding mechanism, a core making mechanism and a discharging mechanism, the discharging mechanism comprises a first rack, the top end of the first rack is fixedly connected with a first sliding rail which is horizontally arranged, and the first rack is rotationally connected with a lead screw which is horizontally arranged; a first motor is fixedly arranged on the first machine frame, an output shaft of the first motor is fixedly connected with one end of a lead screw, a sliding table is arranged on the first sliding rail in a sliding mode, the sliding table is connected with the lead screw in a threaded rotating mode, a vertically-arranged first air cylinder is fixedly arranged on the sliding table, and the output end of the first air cylinder is fixedly connected with a pneumatic clamping jaw. And manual blanking can be replaced, so that the labor intensity of operators can be reduced, the working efficiency can be improved, and the operators can be prevented from being scalded by the high temperature of the surface of the sand core.

Description

TECHNICAL FIELD

[0001] The utility model belongs to foundry equipment technical field, concretely relates to a sand core molding equipment. BACKGROUND

[0002] The sand core molding equipment is a key equipment for manufacturing sand cores, and its working principle is to fill the coated sand containing phenolic resin into a heated metal mold, keep for a certain time, melt the phenolic resin in the coated sand near the inner wall of the mold, and bond the coated sand particles together to form a sand core with a certain thickness along the inner wall of the mold. After pouring out the excess coated sand in the sand core, continue to heat for a certain time to obtain a hollow shell sand core. A variety of technical solutions about the sand core molding equipment are proposed in the prior art, for example, the patent for invention with the authorization announcement number CN 109290528 B discloses a core making machine, which comprises a rack and a sand shooting unit. The rack comprises four guide rod columns and fixed plates one and two, movable plates one and two arranged on the guide rod columns. A lower core box is fixed on the fixed plate two, and an upper core box is fixed on the movable plate one. A center plate is fixed outside the fixed plate one and the fixed plate two, and guide rails are fixed on both sides of the center plate. A translation air cylinder is fixed in the middle of the center plate, and a sand blocking plate is fixed at the extension end of the translation air cylinder.

[0003] The technical solution of the core making machine disclosed in the invention controls the movement of the sand blocking plate by the extension and retraction of the translation air cylinder. After the remaining sand is discharged, the sand blocking plate blocks the sand shooting port by the extension of the translation air cylinder, and the remaining sand continues to solidify and form a closed structure at the sand shooting port, reducing the difficulty of manual sand blocking, improving the work efficiency, and reducing the waste rate. However, after the sand core casting is completed, the operator needs to hold a clamp to take out the sand core from the mold before the next operation, which undoubtedly increases the labor intensity of the operator and reduces the work efficiency. Moreover, the surface temperature of the just solidified sand core is relatively high, and manual operation has a certain risk. Therefore, the above technical problems need to be improved. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a sand core molding equipment to solve the problems in the background art.

[0005] To achieve the above technical purposes, the technical scheme of the utility model is as follows:

[0006] The sand core modeling equipment comprises a feeding mechanism, a core making mechanism and a discharging mechanism, the discharging mechanism comprises a first rack, a first sliding rail horizontally arranged is fixedly connected to the top of the first rack, a screw horizontally arranged is rotatably connected to the first rack, a first motor is fixedly arranged on the first rack, the output shaft of the first motor is fixedly connected with one end of the screw, a sliding table is slidably arranged on the first sliding rail, the sliding table is threadedly rotatably connected with the screw, a first cylinder vertically arranged is fixedly arranged on the sliding table, and a pneumatic clamping jaw is fixedly connected to the output end of the first cylinder.

[0007] As a further improvement, the core making mechanism comprises a second rack, the second rack is composed of two vertically arranged vertical arms and a cross beam fixedly connected with the top of the two vertical arms, a mold is arranged between the vertical arms, the mold comprises an upper mold plate and a lower mold plate, the upper mold plate and the lower mold plate are connected correspondingly, a mold cavity for accommodating a sand core is arranged between the upper mold plate and the lower mold plate, and a feeding port is arranged on the upper mold plate and communicates with the mold cavity.

[0008] As a further improvement, second sliding rails vertically arranged are fixedly connected to the opposite side walls of the two vertical arms, the upper mold plate is slidably connected with the second sliding rails, a first hydraulic cylinder is fixedly arranged on the cross beam, and the output end of the first hydraulic cylinder is fixedly connected with the top of the upper mold plate.

[0009] As a further improvement, third sliding rails horizontally arranged are fixedly connected between the two vertical arms, the lower mold plate is slidably connected with the third sliding rails, a second hydraulic cylinder is fixedly arranged between the two vertical arms, the second hydraulic cylinder is arranged in parallel with the third sliding rails, and the output end of the second hydraulic cylinder is fixedly connected with the lower mold plate.

[0010] As a further improvement, the feeding mechanism comprises a hopper, a cavity for containing coated sand is arranged in the hopper, a barrel is fixedly arranged at the bottom of the hopper and communicates with the hopper, a screw is rotatably arranged in the barrel, a second motor is fixedly arranged at one end of the barrel, the output end of the second motor is fixedly connected with one end of the screw, and a downward discharge port is arranged at the other end of the barrel, and the position of the discharge port corresponds to the position of the feeding port.

[0011] As a further improvement, a conveying belt is arranged at the corresponding position of the discharging mechanism.

[0012] Due to the adoption of the above technical scheme, the sand core modeling equipment has the following beneficial effects:

[0013] The sand core modeling equipment provided by the utility model can replace manual feeding, can reduce the labor intensity of operators, can improve work efficiency, and can prevent the high temperature of the surface of the sand core from causing scalding of the operators. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a structural schematic diagram of the utility model as a whole;

[0015] Figure 2 is a structure schematic view of the feeding mechanism of the utility model;

[0016] Figure 3 is a structure schematic view of the core making mechanism of the utility model;

[0017] Figure 4 is a partial schematic view of the core making mechanism of the utility model;

[0018] Figure 5 is a structure schematic view of the discharging mechanism of the utility model.

[0019] Among them: 1-feeding mechanism, 101-hopper, 102-die, 1021-discharge port, 103-screw, 104-second motor, 2-core making mechanism, 201-second rack, 2011-vertical arm, 2012-crossbeam, 202-mold, 2021-upper mold plate, 2022-lower mold plate, 2023-feeding port, 203-second slide rail, 204-first hydraulic cylinder, 205-third slide rail, 206-second hydraulic cylinder, 3-discharging mechanism, 301-first rack, 302-first slide rail, 303-screw, 304-first motor, 305-sliding table, 306-cylinder, 307-pneumatic clamping jaw, 4-conveying belt. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the utility model more clear and obvious, the utility model is further described in detail below in combination with specific implementation manners and with reference to the drawings. Among them, the drawings are only used for example description, and the representation is only a schematic view, not a real object drawing, and cannot be understood as the limitation of the application; in order to better illustrate the embodiments of the utility model, some components of the drawings will be omitted, enlarged or reduced, and the size of the actual product is not represented; for those skilled in the art, it is understandable that some known structures and their descriptions in the drawings can be omitted.

[0021] The same or similar reference numerals in the drawings of the embodiments of the utility model correspond to the same or similar components; in the description of the utility model, it is understood that if the orientation or position relationship indicated by the terms "upper", "lower", "left", "right" and the like is based on the orientation or position relationship shown in the drawings, only for the convenience of describing the utility model and simplifying the description, and not indicating or implying that the indicated device or element must have a particular orientation, a particular orientation and operation, therefore, the position relationship description in the drawings is only used for example description, and cannot be understood as the limitation of the application, for those skilled in the art, the specific meaning of the above terms can be understood according to the specific situation.

[0022] As Figures 1-5As shown, a sand core molding equipment includes a feeding mechanism 1, a core making mechanism 2 and a discharging mechanism 3, the discharging mechanism 3 includes a first rack 301, a first slide rail 302 horizontally arranged and fixedly connected to the top of the first rack 301, a lead screw 303 horizontally arranged and rotatably connected to the first rack 301, a first motor 304 fixedly arranged on the first rack 301, an output shaft of the first motor 304 fixedly connected to one end of the lead screw 303, a sliding table 305 slidably arranged on the first slide rail 302, the sliding table 305 threadedly rotatably connected to the lead screw 303, an air cylinder 306 vertically arranged and fixedly arranged on the sliding table 305, and a pneumatic clamp jaw 307 fixedly connected to the output end of the air cylinder 306. Specifically, after the pneumatic clamp jaw 307 clamps the finished sand core, the first motor 304 drives the lead screw 303 to rotate, the lead screw 303 drives the sliding table 305 to move along the first slide rail 302, the air cylinder 306 drives the pneumatic clamp jaw 307 to move up and down in extension and retraction, so that the sand core can be taken out of the mold 202, which not only improves the work efficiency, but also reduces the risk of being scalded by the sand core when the operator manually clamps the sand core.

[0023] In this embodiment, the core making mechanism 2 includes a second rack 201 composed of two vertically arranged vertical arms 2011 and a cross beam 2012 fixedly connected perpendicularly to the top of the two vertical arms 2011, a mold 202 is arranged between the vertical arms 2011, the mold 202 includes an upper mold plate 2021 and a lower mold plate 2022 corresponding to each other, a mold cavity for accommodating a sand core is arranged between the upper mold plate 2021 and the lower mold plate 2022, an inlet 2023 is arranged on the upper mold plate 2021, the inlet 2023 is in communication with the mold cavity, the coated sand enters the mold cavity from the inlet 2023, the mold 202 is connected with a heating device, which can melt the phenolic resin contained in the coated sand and bond the coated sand particles into a whole, and finally form a sand core.

[0024] In this embodiment, the second slide rail 203 is fixedly connected to the vertical wall opposite to the two vertical arms 2011, the upper mold plate 2021 is slidably connected to the second slide rail 203, the first hydraulic cylinder 204 is fixedly arranged on the cross beam 2012, and the output end of the first hydraulic cylinder 204 is fixedly connected to the top of the upper mold plate 2021. The first hydraulic cylinder 204 drives the upper mold plate 2021 to move upward along the second slide rail 203, and the upper mold plate 2021 is separated from the lower mold plate 2022.

[0025] In the embodiment, the third slide rail 205 is horizontally arranged between the two vertical arms 2011 and fixedly connected with the lower die plate 2022, the second hydraulic cylinder 206 is fixedly arranged between the two vertical arms 2011 and arranged in parallel with the third slide rail 205, and the output end of the second hydraulic cylinder 206 is fixedly connected with the lower die plate 2022. The second hydraulic cylinder 206 drives the lower die plate 2022 to move along the third slide rail 205 to approach the blanking mechanism 3, so that the upper die plate 2021 and the lower die plate 2022 are staggered, and the blanking mechanism 3 can more conveniently take out the sand core.

[0026] In the embodiment, the feeding mechanism 1 comprises a hopper 101, the hopper 101 is internally provided with a cavity for containing the coated sand, the hopper 101 is fixedly provided at the bottom with a barrel 102, the barrel 102 is communicated with the hopper 101, the barrel 102 is rotatably provided with a screw rod 103, one end of the barrel 102 is fixedly provided with a second motor 104, the output end of the second motor 104 is fixedly connected with one end of the screw rod 103, and the other end of the barrel 102 is provided with a downward discharge port 1021 corresponding to the position of the feeding port 2023. The second motor 104 drives the screw rod 103 to rotate, the coated sand in the barrel 102 is conveyed to the discharge port 1021 and enters the mold cavity from the feeding port 2023, and after the second motor 104 stops rotating, the screw rod 103 stops rotating and conveying the coated sand outward, and the mold 202 can start heating and core making.

[0027] In the embodiment, the position corresponding to the blanking mechanism 3 is provided with a conveying belt 4, and after the blanking mechanism 3 puts the taken-out sand core on the conveying belt 4, the conveying belt 4 conveys the finished sand core to the next process.

[0028] In use, the coated sand containing phenolic resin is first poured into the hopper 101, the second motor 104 drives the screw rod 103 to rotate and discharge the coated sand from the discharge port 1021 into the feeding port 2023, the coated sand enters the cavity of the mold 202, the phenolic resin is melted by heat, the coated sand close to the inner wall of the cavity is bonded to form a whole, and the sand core is formed. The first hydraulic cylinder 204 drives the upper die plate 2021 to move upward, the upper die plate 2021 is separated from the lower die plate 2022, the second hydraulic cylinder 206 drives the lower die plate 2022 to approach the blanking mechanism 3 and makes the upper die plate 2021 and the lower die plate 2022 staggered, the pneumatic clamping jaw 307 clamps the sand core and places the sand core on the conveying belt 4, and the above steps are repeated to continuously produce.

[0029] The specific implementation of the above-mentioned utility model does not constitute a limitation on the protection scope of the utility model. Any other corresponding changes and modifications made according to the technical concept of the utility model should be included in the protection scope of the utility model claim.

Claims

1. A sand core molding apparatus comprising a feeding mechanism, a core making mechanism, and a discharging mechanism, characterized by, The blanking mechanism comprises a first rack, a first slide rail horizontally arranged and fixedly connected to the top end of the first rack, a lead screw horizontally arranged and rotationally connected to the first rack, a first motor fixedly arranged on the first rack, an output shaft of the first motor fixedly connected to one end of the lead screw, a sliding table slidably arranged on the first slide rail, the sliding table threadedly rotationally connected to the lead screw, a first cylinder vertically arranged and fixedly arranged on the sliding table, and a pneumatic clamp jaw fixedly connected to the output end of the first cylinder.

2. A sand core molding apparatus according to claim 1, wherein The core making mechanism comprises a second rack, two vertically arranged vertical arms and a cross beam fixedly connected to the top of the two vertical arms, a mold arranged between the vertical arms, the mold comprising an upper mold plate and a lower mold plate, the upper mold plate corresponding to the lower mold plate, a mold cavity for accommodating a sand core arranged between the upper mold plate and the lower mold plate, and a feed inlet arranged on the upper mold plate and in communication with the mold cavity.

3. A sand core molding apparatus according to claim 2 wherein, Second slide rails vertically arranged and fixedly connected to the opposite side walls of the two vertical arms, the upper mold plate slidably connected to the second slide rails, a first hydraulic cylinder fixedly arranged on the cross beam, and an output end of the first hydraulic cylinder fixedly connected to the top of the upper mold plate.

4. A sand core molding apparatus according to claim 3 wherein, A third slide rail horizontally arranged and fixedly connected between the two vertical arms, the lower mold plate slidably connected to the third slide rail, a second hydraulic cylinder fixedly arranged between the two vertical arms, the second hydraulic cylinder arranged in parallel with the third slide rail, and an output end of the second hydraulic cylinder fixedly connected to the lower mold plate.

5. A sand core molding apparatus according to claim 2 wherein, The feeding mechanism comprises a hopper, a cavity for containing coated sand arranged inside the hopper, a barrel fixedly arranged at the bottom of the hopper, the barrel in communication with the hopper, a screw rotationally arranged in the barrel, a second motor fixedly arranged at one end of the barrel, an output end of the second motor fixedly connected to one end of the screw, a downwardly arranged discharge port arranged at the other end of the barrel, and the discharge port corresponding in position to the feed inlet.

6. A sand core molding apparatus according to claim 1 wherein, A conveyor belt is arranged at a corresponding position of the blanking mechanism.

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