Sand mold modeling drawing device for casting

Abstract

The utility model discloses a sand mold modeling drawing device for casting. The sand mold modeling drawing device comprises a bottom frame and a driving unit, the upper surface of the bottom frame is provided with sliding columns which are evenly distributed, the sliding columns are in sliding connection with sliding holes in the middle of the lifting frame, the left side face and the right side face of the lifting frame are rotationally connected with symmetrically-distributed supporting rods through first rotating shafts, every two longitudinally-corresponding supporting rods form a set, and the upper ends of the set of supporting rods are rotationally connected with a mold lifting base through second rotating shafts. A U-shaped base is arranged between the two supporting rods on the front side, circular shafts are arranged at the front ends of the left side face and the right side face of the U-shaped base correspondingly, guide plates are arranged at the front ends of the left side face and the right side face of the bottom frame correspondingly, and guide sliding holes are formed in the upper ends of the left side faces of the guide plates correspondingly. And after the casting sand mold is lifted to the topmost end, the casting sand mold can be lifted to the front, so that the sand mold is convenient to transfer, and the use convenience is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of casting equipment, in particular to a sand mold stripping device for casting. Background Art

[0002] Casting plays a vital role in industrial production, among which sand casting is the most common casting method. First, a mold is made of sand and other materials, and then the molten metal is poured into the mold, and it is taken out after cooling and solidification. In the process of sand mold manufacturing, a molding machine is used. The molding machine fills the loose molding sand into the sand box, and makes the loose molding sand in the sand box compacted by different methods such as vibration, compaction, vibration pressure, and shot pressure, so that the sand mold has the necessary strength during transportation and pouring. Then the lifting mechanism is used to remove the sand mold from the pattern to realize demolding, which greatly improves the demolding efficiency and quality. However, it can generally only perform a single vertical movement, and the sand mold cannot be lifted forward to the conveyor belt, and the convenience of use is not good. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the existing defects and provide a sand mold molding and demolding device for casting, which can use the power of a motor to drive the sand mold to move up to realize mold lifting. After lifting to the top, the casting sand mold can also be lifted to the front, which is convenient for the transportation of the sand mold, greatly improving the convenience during use, and can effectively solve the problems in the background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sand mold stripping device for casting, comprising a base frame and a driving unit;

[0005] Base frame: Its upper surface is provided with evenly distributed sliding columns, which are all slidably connected to the sliding holes in the middle of the lifting frame. The left and right sides of the lifting frame are rotatably connected to symmetrically distributed support rods through a rotating shaft 1. Two longitudinally corresponding support rods form a group, and the upper ends of a group of support rods are rotatably connected to a mold lifting seat through a rotating shaft 2. A U-shaped seat is provided between the two front support rods, and the front ends of the left and right sides of the U-shaped seat are provided with round shafts. The front ends of the left and right sides of the base frame are provided with guide plates, and the upper ends of the left sides of the guide plates are provided with guide sliding holes, and the round shafts are slidably connected to the laterally adjacent guide sliding holes;

[0006] Driving unit: It is arranged at the front end of the base frame, and the upper end of the driving unit is threadedly connected to the lifting frame. During use, the power of the motor can be used to drive the sand mold to move up to realize mold lifting. After lifting to the top, the casting sand mold can also be lifted to the front, thereby facilitating the transportation of the sand mold and greatly improving the convenience during use.

[0007] Furthermore, the guide sliding hole is a "7"-shaped guide sliding hole, which can produce guidance in different directions.

[0008] Furthermore, the driving unit includes a screw rod, which is rotatably connected to the left and right ends of the base frame through bearings, and the upper ends of the screw rod are threadedly connected to the lifting frame to facilitate driving the lifting frame to move up and down.

[0009] Furthermore, the drive unit also includes a synchronous pulley 1, a transmission shaft, a synchronous pulley 2 and a synchronous pulley 3. The synchronous pulley 1 is respectively arranged at the lower end of the screw rod, the transmission shaft is rotatably connected to the front end of the upper surface of the base frame through a bearing, the lower end of the outer arc surface of the transmission shaft is provided with a synchronous pulley 2, the synchronous pulley 1 and the longitudinally corresponding synchronous pulley 2 are connected through a synchronous belt 1, the upper end of the transmission shaft is provided with a synchronous pulley 3, and the two synchronous pulleys 3 are connected through a synchronous belt 2, so as to facilitate the synchronous control of the two screw rods.

[0010] Furthermore, a servo motor is provided at the front end of the upper surface of the chassis through a motor bracket, the output shaft of the servo motor is fixedly connected to the transmission shaft on the right side, and the input end of the servo motor is electrically connected to the output end of the external controller to facilitate the driving of the screw rod.

[0011] Furthermore, the left and right side surfaces of the base frame are rotatably connected with tension springs via a first pin, and the upper ends of the tension springs are rotatably connected to longitudinally adjacent support rods via a second pin, providing tension to the support rods to facilitate resetting of the support rods.

[0012] Furthermore, symmetrically distributed fixing holes are provided at both left and right ends of the upper surface of the base frame to facilitate installation and positioning of the base frame.

[0013] Compared with the prior art, the beneficial effects of the utility model are: the sand mold stripping device for casting has the following advantages:

[0014] The external controller controls the operation of the servo motor. The output shaft of the servo motor drives the transmission shaft on the right to rotate. The transmission shaft on the right drives the transmission shaft on the left to rotate synchronously through two synchronous pulleys three and synchronous belt two. The transmission shaft drives the lead screw to rotate through synchronous pulley two, synchronous pulley one and synchronous belt one. The lead screw drives the lifting frame to slide upward along the sliding column. The lifting frame drives the support rod to move upward. The support rod drives the die lifting seat, U-shaped seat and round shaft to move upward synchronously. The round shaft slides upward along the guide sliding hole. The lower end of the guide sliding hole is vertical. The die lifting seat lifts the casting sand mold to realize die removal. When the round shaft moves upward, When it reaches the top and contacts the upper end of the guide slide hole, the upper end of the guide slide hole is tilted upward from back to front, and the circular shaft will move forward during the upward movement. The circular shaft pulls the front support rod forward through the U-shaped seat, and the two longitudinally corresponding support rods form a parallelogram structure with the mold lifting seat and the lifting frame, and then the two mold lifting seats will drive the casting sand mold to rotate forward horizontally. During use, the power of the motor can be used to drive the sand mold to move upward to realize mold lifting. After lifting to the top, the casting sand mold can also be lifted to the front, which is convenient for the transportation of the sand mold, greatly improving the convenience during use. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0016] In the figure: 1 base frame, 2 sliding column, 3 lifting frame, 4 support rod, 5 die lifting seat, 6 driving unit, 61 screw rod, 62 synchronous pulley 1, 63 transmission shaft, 64 synchronous pulley 2, 65 synchronous pulley 3, 66 servo motor, 7 U-shaped seat, 8 round shaft, 9 guide plate, 10 guide slide hole, 11 tension spring, 12 fixing hole. DETAILED DESCRIPTION

[0017] 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.

[0018] See also Figure 1 , This embodiment provides a technical solution: a sand mold stripping device for casting, comprising a base frame 1 and a driving unit 6;

[0019] Base frame 1: Its upper surface is provided with evenly distributed sliding columns 2, and base frame 1 provides installation positions for other parts. The sliding columns 2 are slidably connected to the sliding holes in the middle of the lifting frame 3. The left and right sides of the lifting frame 3 are rotatably connected to symmetrically distributed support rods 4 through a rotating shaft 1. Two longitudinally corresponding support rods 4 form a group, and the upper ends of a group of support rods 4 are rotatably connected to a die lifting seat 5 through a rotating shaft 2. The lifting frame 3 drives the support rods 4 to move upward, and the support rods 4 drive the die lifting seat 5 to move upward synchronously. The die lifting seat 5 The casting sand mold is lifted up to realize demolding, a U-shaped seat 7 is arranged between the two support rods 4 on the front side, and round shafts 8 are arranged at the front ends of the left and right sides of the U-shaped seat 7, and guide plates 9 are arranged at the front ends of the left and right sides of the bottom frame 1, and guide sliding holes 10 are opened at the upper ends of the left sides of the guide plates 9, and the round shafts 8 are slidably connected with the laterally adjacent guide sliding holes 10, and the guide sliding holes 10 are "7"-shaped guide sliding holes, and the support rods 4 drive the U-shaped seat 7 and the round shaft 8 to move up synchronously, and the round shaft 8 slides upward along the guide sliding holes 10, and the guide The lower end of the guide slide hole 10 is vertical, maintaining the vertical state of the support rod 4. When the round shaft 8 moves up to the top and contacts the upper end of the guide slide hole 10, the upper end of the guide slide hole 10 is tilted upward from back to front, and the round shaft 8 moves forward during the upward movement. The round shaft 8 pulls the front support rod 4 forward through the U-shaped seat 7. The two longitudinally corresponding support rods 4 form a parallelogram structure with the mold lifting seat 5 and the lifting frame 3, and the two mold lifting seats 5 will drive the casting sand mold to rotate horizontally and move forward. The casting sand mold is lifted to the front, so as to facilitate the transportation of the sand mold. The left and right sides of the base frame 1 are rotatably connected with tension springs 11 through a pin shaft 1. The upper ends of the tension springs 11 are rotatably connected with the longitudinally adjacent support rods 4 through pin shafts 2. The tension springs 11 provide a backward pulling force to the support rods 4, so that the support rods 4 can be restored to a vertical state when they move downward. The left and right ends of the upper surface of the base frame 1 are provided with symmetrically distributed fixing holes 12. Bolts are used to pass through the fixing holes 12 to connect the base frame 1 to the lower end of the casting molding machine;

[0020] The driving unit 6 is arranged at the front end of the base frame 1, and the upper end of the driving unit 6 is threadedly connected to the lifting frame 3. The driving unit 6 includes a screw rod 61, which is rotatably connected to the left and right ends of the base frame 1 through a bearing. The upper ends of the screw rod 61 are threadedly connected to the lifting frame 3, and the screw rod 61 drives the lifting frame 3 to slide upward along the sliding column 2. The driving unit 6 also includes a synchronous pulley 1 62, a transmission shaft 63, a synchronous pulley 2 64 and a synchronous pulley 3 65. The synchronous pulley 1 62 is respectively arranged at the lower end of the screw rod 61, and the transmission shaft 63 is rotatably connected to the front end of the upper surface of the base frame 1 through a bearing. The lower end of the outer arc surface of the transmission shaft 63 is provided with a synchronous pulley 2 64, and the synchronous pulley 1 62 and the longitudinally corresponding synchronous pulley 2 64 are both connected by A synchronous belt is connected for transmission, and a synchronous pulley three 65 is provided at the upper end of the transmission shaft 63. The two synchronous pulleys three 65 are connected for transmission through a synchronous belt two. The transmission shaft 63 on the right side drives the transmission shaft 63 on the left side to rotate synchronously through the two synchronous pulleys three 65 and the synchronous belt two. The transmission shaft 63 drives the screw rod 61 to rotate through the synchronous pulley two 64, the synchronous pulley one 62 and the synchronous belt one. A servo motor 66 is provided at the front end of the upper surface of the base frame 1 through a motor bracket. The output shaft of the servo motor 66 is fixedly connected to the transmission shaft 63 on the right side. The input end of the servo motor 66 is electrically connected to the output end of the external controller. The external controller controls the operation of the servo motor 66, and the output shaft of the servo motor 66 drives the transmission shaft 63 on the right side to rotate.

[0021] The working principle of a sand mold molding and demolding device for casting provided by the utility model is as follows: a base frame 1 is connected to the lower end of a casting molding machine by passing bolts through fixing holes 12. After the molding machine compacts the loose molding sand in the sand box, an external controller controls the servo motor 66 to operate. The output shaft of the servo motor 66 drives the transmission shaft 63 on the right to rotate. The transmission shaft 63 on the right drives the transmission shaft 63 on the left to rotate synchronously through two synchronous pulleys 3 65 and synchronous belt 2. The transmission shaft 63 drives the screw rod 61 to rotate through synchronous pulley 2 64, synchronous pulley 1 62 and synchronous belt 1. The screw rod 61 drives the lifting frame 3 to slide upward along the sliding column 2. The lifting frame 3 drives the support rod 4 to move upward. The support rod 4 The mold lifting seat 5, U-shaped seat 7 and round shaft 8 are driven to move upward synchronously, and the round shaft 8 slides upward along the guide slide hole 10. The lower end of the guide slide hole 10 is vertical, and the mold lifting seat 5 lifts the casting sand mold to realize mold removal. When the round shaft 8 moves to the top and contacts with the upper end of the guide slide hole 10, the upper end of the guide slide hole 10 is tilted upward from back to front, and the round shaft 8 will move forward during the upward movement. The round shaft 8 pulls the front support rod 4 forward through the U-shaped seat 7, and the two longitudinally corresponding support rods 4 form a parallelogram structure with the mold lifting seat 5 and the lifting frame 3, and then the two mold lifting seats 5 will drive the casting sand mold to rotate forward horizontally, and lift the casting sand mold to the conveyor belt in front, thereby facilitating the transportation of the sand mold.

[0022] It is worth noting that the servo motor 66 disclosed in the above embodiment can be freely configured according to the actual application scenario. The servo motor 66 can use a servo motor with model 1FK7060-5AF71-1SG0, and the external controller controls the operation of the servo motor 66 using methods commonly used in the prior art.

[0023] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A sand mold stripping device for casting, characterized in that: It comprises a base frame (1) and a drive unit (6); Base frame (1): Its upper surface is provided with evenly distributed sliding columns (2), and the sliding columns (2) are all slidably connected to the sliding holes in the middle of the lifting frame (3). The left and right side surfaces of the lifting frame (3) are rotatably connected to symmetrically distributed support rods (4) through a rotating shaft 1. Two longitudinally corresponding support rods (4) form a group, and the upper ends of a group of support rods (4) are rotatably connected to a mold lifting seat (5) through a rotating shaft 2. A U-shaped seat (7) is provided between the two front support rods (4), and the front ends of the left and right side surfaces of the U-shaped seat (7) are provided with round shafts (8). The front ends of the left and right side surfaces of the base frame (1) are provided with guide plates (9), and the upper ends of the left sides of the guide plates (9) are provided with guide sliding holes (10), and the round shafts (8) are slidably connected to the laterally adjacent guide sliding holes (10); A driving unit (6) is arranged at the front end of the base frame (1), and the upper end of the driving unit (6) is threadedly connected to the lifting frame (3).

2. A sand mold stripping device for casting according to claim 1, characterized in that: The guide sliding hole (10) is a "7" type guide sliding hole.

3. A sand mold stripping device for casting according to claim 1, characterized in that: The driving unit (6) comprises a screw rod (61), wherein the screw rod (61) is rotatably connected to the left and right ends of the base frame (1) via bearings, and the upper ends of the screw rod (61) are both threadedly connected to the lifting frame (3).

4. A sand mold stripping device for casting according to claim 3, characterized in that: The drive unit (6) further comprises a synchronous pulley 1 (62), a transmission shaft (63), a synchronous pulley 2 (64) and a synchronous pulley 3 (65), wherein the synchronous pulley 1 (62) is respectively arranged at the lower end of the screw rod (61), the transmission shaft (63) is rotatably connected to the front end of the upper surface of the base frame (1) via a bearing, the lower end of the outer arc surface of the transmission shaft (63) is provided with a synchronous pulley 2 (64), the synchronous pulley 1 (62) and the longitudinally corresponding synchronous pulley 2 (64) are both connected in transmission via the synchronous belt 1, the upper end of the transmission shaft (63) is provided with a synchronous pulley 3 (65), and the two synchronous pulleys 3 (65) are connected in transmission via the synchronous belt 2.

5. A sand mold stripping device for casting according to claim 4, characterized in that: A servo motor (66) is provided at the front end of the upper surface of the base frame (1) via a motor bracket, the output shaft of the servo motor (66) is fixedly connected to the transmission shaft (63) on the right side, and the input end of the servo motor (66) is electrically connected to the output end of an external controller.

6. A sand mold stripping device for casting according to claim 1, characterized in that: The left and right side surfaces of the base frame (1) are both rotatably connected to tension springs (11) via a first pin, and the upper ends of the tension springs (11) are both rotatably connected to longitudinally adjacent support rods (4) via a second pin.

7. A sand mold stripping device for casting according to claim 1, characterized in that: The upper surface of the base frame (1) is provided with symmetrically distributed fixing holes (12) at both left and right ends.

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