Casting machine outer mold capable of buffering mold opening force

Abstract

The invention belongs to the technical field of casting machines, and particularly relates to a casting machine outer mold capable of buffering mold opening force, which comprises a casting mold box, a sealing baffle is clamped on the upper surface of the casting mold box, a pressurizing device is arranged at the axis of the lower surface of the casting mold box, and the casting mold box comprises a refitted box shell. A buffer spring is fixedly connected to the axis of the lower portion of the inner wall of the refitted box shell, a movable tray is fixedly connected to the top end of the buffer spring, and sliding side shells are symmetrically arranged on the left side and the right side of the axis of the refitted box shell. In the mold opening process, the pulling force applied to the mold is gradually increased, and after the mold is opened, the bottom end of the limiting sliding pipe stops stretching due to the blocking effect of the side baffle, so that the overall stretching range of the vertical pipe set is a certain value, and the situation that the internal pressure intensity of the vertical pipe set is too large, a closed baffle rises rapidly at the moment of mold opening, and the mold opening time is shortened is prevented. Therefore, the safety of mold opening work is ensured, and the damage to the device is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of casting machines, and specifically relates to an outer mold of a casting machine for buffering the mold opening force. Background Art

[0002] With the wide use of high-efficiency molding equipment, the production rhythm is getting faster and faster, and manual operation is very tense. Often, due to problems in the pouring process, the production capacity of the molding line is restricted, and the scrap rate of castings remains high, resulting in serious waste of molten iron, and burns to pouring workers occur from time to time. To change this state, mechanized and automated casting machines must be used.

[0003] The existing mold opening principle of casting machines is usually to apply forces in opposite directions to both sides of the mold, and then pull the mold apart. Therefore, the applied mold opening force is usually large. After the mold is opened, the resistance opposite to the device pulling force will disappear instantly, while the pulling force cannot disappear instantly. The large inertial pulling force will damage the internal structure of the device and reduce the service life of the device. Therefore, this inertial pulling force needs to be processed. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the present invention provides an outer mold of a casting machine for buffering the mold opening force, which solves the problem that after the mold is opened, the resistance opposite to the device pulling force will disappear instantly, while the pulling force cannot disappear instantly, and the large inertial pulling force will damage the internal structure of the device and reduce the service life of the device.

[0005] The technical solution adopted by the present invention to solve its technical problems is as follows: An outer mold of a casting machine for buffering the mold opening force according to the present invention includes a casting mold box, and a closed baffle is clamped on the upper surface of the casting mold box, and a pressurizing device is arranged at the center of the lower surface of the casting mold box.

[0006] Preferably, the casting mold box includes a modified box shell. A buffer spring is fixedly connected to the center of the lower part of the inner wall of the modified box shell, and the top end of the buffer spring is fixedly connected to a movable tray. Sliding side shells are symmetrically arranged on the left and right sides of the center of the modified box shell. Fixed inserts are slidably connected to the upper part of the inner wall of the sliding side shell. Tensile arms are symmetrically arranged on the left and right sides of the outer surface of the movable tray. Ventilation devices are symmetrically arranged on the left and right sides of the upper part of the inner wall of the modified box shell. A cooling chamber is opened in the lower part of the inner wall of the modified box shell. Water supply devices are symmetrically arranged on the left and right sides of the cooling chamber. Before using this device for casting work, open the upper closed baffle, then fixedly install the mold on the upper surface of the movable tray, inject the molten raw material into the mold, then press down the closed baffle to seal it. The bottom end of the closed baffle is clamped into the inner wall of the modified box shell, and the side of the sliding side shell is clamped tightly with the upper corner of the mold. Then, inject water into the inside of the cooling chamber through the water supply device until the inside of the cooling chamber is filled with water, and the mold placed on the upper surface of the movable tray is cooled.

[0007] Preferably, the pressurizing device includes a fixed rotating machine. An outer surface of an output shaft of the fixed rotating machine is fixedly connected with a turbine rotating rod. An outer surface of the turbine rotating rod is rotatably connected with a connecting sleeve. The inner wall of the connecting sleeve is uniformly provided with fixed conduits. A top end of each fixed conduit is fixedly connected with a vertical pipe group. After a period of time, the model is cooled and solidified. The turbine rotating rod is controlled by the fixed rotating machine to rotate clockwise. During the rotation of the turbine rotating rod, air below is introduced into the interior of the connecting sleeve and then enters the interior of the vertical pipe group through the fixed conduits.

[0008] Preferably, the vertical pipe group includes a fixed pipe shell. An upper part of an inner wall of the fixed pipe shell is movably connected with a limiting sliding pipe. A lower part of an outer surface of the limiting sliding pipe is sleeved with a small spring. A middle part of the outer surface of the limiting sliding pipe is slidably connected with a side baffle. As the gas introduced through the fixed conduits gradually increases and the top end of the limiting sliding pipe is closed by a lower surface of a closing baffle, the pressure inside the fixed pipe shell gradually increases. The pressure pushes the closing baffle upward, and the limiting sliding pipe slides upward. During the upward movement of the closing baffle, the lower surface of the closing baffle pushes the sliding side shell upward through a tension arm, thereby pulling the mold upward. The buffer spring is gradually stretched, and the pulling force of the buffer spring gradually increases. Until the pressure inside the fixed pipe shell is large enough, due to the excessive pulling force, at this time, the mold above the movable tray is separated from the mold under the action of pulling forces on both the upper and lower sides. During this process, the buffer spring is stretched by a certain amount. Then, the movable tray above is pulled downward, and the mold is completely separated. Subsequently, the closing baffle is pulled, and the mold after internal mold opening is taken out to obtain a finished mold part. During the mold opening process, the pulling force applied to the mold gradually increases. When the mold is opened, the bottom end of the limiting sliding pipe also stops extending due to the blocking effect of the side baffle, so that the overall elongation range of the vertical pipe group is a certain value, preventing the pressure inside the vertical pipe group from being too large and causing the risk of excessive mold opening force when the closing baffle quickly rises instantaneously during mold opening, ensuring the safety of the mold opening operation and reducing the damage of the device.

[0009] Preferably, the number of the vertical pipe groups is four, the number of the fixed conduits is four, the top ends of the fixed conduits extend into the cooling chamber through the through ports, the upper parts of the outer surfaces of the fixed conduits are slidably connected to the lower parts of the inner walls of the fixed pipe casings, the bottom ends of the fixed pipe casings are fixedly connected to the lower parts of the inner walls of the modified box casings, the upper parts of the outer surfaces of the connecting sleeves are fixedly connected to the lower surfaces of the modified box casings, the outer surfaces of the side baffles are fixedly connected to the upper parts of the inner walls of the fixed pipe casings, the top ends of the limit sliding pipes extend outside the fixed pipe casings, and the top ends of the limit sliding pipes are fixedly connected to the lower surfaces of the closing baffles. The device performs multi-stage buffering on the interior of the device during the mold opening process through the small springs and the buffer springs. On the one hand, it can ensure the smooth progress of the mold opening operation, and on the other hand, it can buffer the impact force received by the device after mold opening. Moreover, the device has a maximum mold opening limit and can control the mold opening force within a certain safe range for operation, making it safer and more reliable.

[0010] Preferably, the number of the sliding side casings is two, the left and right sides of the outer surfaces of the sliding side casings are slidably connected to the upper parts of the inner walls of the modified box casings, the number of the fixed inserts is two, the upper parts of the fixed inserts are fixedly connected to the upper parts of the inner walls of the modified box casings, the top ends of the tension arms are fixedly connected to the lower parts of the outer surfaces of the closing baffles, the bottom ends of the tension arms are slidably connected to the sides of the movable trays, the sides of the movable trays are slidably connected to the upper parts of the inner walls of the modified box casings, and a mold is fixedly connected to the upper surface of the movable tray. Since the mold opening process of the device is relatively gentle and the related devices will not move excessively after mold opening, during the plastic shaping and mold opening processes, the mold is completely inside the modified box casing. The mold may crack due to the thermal expansion and contraction of the internal material. The modified box casing can provide a protective effect, and the hot gas released by the mold instantaneously during mold opening can be absorbed and blocked by the interior of the modified box casing, preventing accidents where the operator is scalded by the hot gas.

[0011] Preferably, the ventilation device includes a fixed rotating rod. A support plate is rotatably connected to the lower part of the outer surface of the fixed rotating rod. Telescopic arms are arranged on both the left and right sides of the outer surface of the fixed rotating rod. A vertical sliding plate is fixedly connected to the side of the outer surface of the fixed rotating rod away from the movable tray through the telescopic arms. Elastic balance belts are fixedly connected to the upper and lower sides of the outer surface of the vertical sliding plate. During the mold opening process, the tension arms pull the telescopic arms on both sides upward. The top of the telescopic arm controls the rotation of the telescopic arm on the other side through the fixed rotating rod, thereby sliding the vertical sliding plate downward. At this time, the auxiliary ventilation openings are opened. When the mold is opened instantaneously, the pressure gas released inside the mold first passes through the gap between the fixed insert and the inner wall of the modified packing case, and finally is discharged to the outside through the auxiliary ventilation openings on both sides. Since the main ventilation opening and the auxiliary ventilation opening intersect with each other, the gas will pass through the gap between the auxiliary ventilation opening and the main ventilation opening, thereby making a sound. At this time, the operator can hear the sound from the outside, and then determine that the internal mold opening is completed. Because the mold opening process of this device is relatively gentle, and during the mold opening process, the mold is in a relatively sealed state throughout. And through the sound of air flow that the operator can hear from the outside, it can be determined whether the internal mold opening is completed, so as to take out the mold in time and improve work efficiency.

[0012] Preferably, an auxiliary ventilation opening is provided on one side of the inner cavity of the modified packing case close to the vertical sliding plate, and a main ventilation opening is provided on the side of the inner cavity of the modified packing case away from the vertical sliding plate.

[0013] Preferably, one side of the outer surface of the fixed rotating rod close to the movable tray is fixedly connected to the lower part of the outer surface of the tension arm through the telescopic arm. The bottom end of the support plate is fixedly connected to the upper part of the inner wall of the modified packing case. The middle part of the outer surface of the fixed rotating rod is rotatably connected to the top end of the support plate. The side of the outer surface of the vertical sliding plate away from the telescopic arm is slidably connected to the inner wall of the modified packing case. The top end of the telescopic arm is fixedly connected to the outer surface of the fixed rotating rod.

[0014] Preferably, the water delivery device includes a side opening, and an insulating sandwich panel is fixedly connected to the inner wall of the side opening. A water delivery pipe is fixedly connected to the middle of the inner wall of the insulating sandwich panel. A stretching sliding disk is slidably connected to one side of the inner wall of the water delivery pipe close to the buffer spring. Openings are evenly formed in the middle of the inner wall of the stretching sliding disk. Before mold opening, the user injects water into the inside of the cooling chamber through the water delivery pipe to ensure that the internal temperature of the device is in a low-temperature state, so that the components inside the mold can be quickly formed. During the process of mold opening, since the movable tray will rise under the action of the pulling force, the volume inside the cooling chamber increases and the pressure decreases. Therefore, the outside air pushes the stretching sliding disk into the inside of the cooling chamber, and then the opening of the stretching sliding disk slides into the inside of the cooling chamber. After the inside of the cooling chamber is pressurized, when the mold opening is completed, the buffer spring has a tendency to pull the movable tray back to its original position. However, the pressure inside the lower cooling chamber is the same as the external air pressure. At this time, the bottom end of the stretching sliding disk retracts into the inside of the water delivery pipe. Because the device cannot actually be completely sealed, the air pressure inside the cooling chamber will slowly be discharged to the outside through relevant gaps, the buffer spring slowly resets, and the movable tray slowly slides down. And this period of time allows the operator to take out the mold directly above the movable tray, and then the movable tray slides deep into the device.

[0015] Preferably, one end of the water delivery pipe close to the buffer spring extends into the inside of the modified packing case. The outer surface of the stretching sliding disk is slidably connected to the inner wall of the insulating sandwich panel, and the bottom end of the stretching sliding disk is slidably connected to the inner wall of the water delivery pipe. The device sets the initial position of the movable tray at a deeper position, so that the mold is less interfered during the cooling process, which is also beneficial to protecting the external operators. And during the process of taking out the mold, the movable tray will not quickly reset under the action of the pressure, making it more convenient for the operator to take out the mold.

[0016] Preferably, the horizontal height of the secondary ventilation opening is lower than that of the main ventilation opening, and the main ventilation opening and the secondary ventilation opening intersect with each other.

[0017] The beneficial effects of the present invention are as follows: 1. During the process of mold opening, the pulling force applied to the mold gradually increases. When the mold is opened, the bottom end of the limit sliding pipe will also stop extending due to the blocking effect of the side baffle, so that the overall elongation range of the vertical pipe group is a certain value, preventing the internal pressure of the vertical pipe group from being too large and causing the risk of excessive mold opening force at the moment of mold opening, ensuring the safety of the mold opening work and reducing the damage of the device.

[0018] 2. Since the mold opening process of the device is relatively gentle, and the related devices will not move excessively after mold opening. During the plastic shaping and mold opening processes, the mold is completely inside the modified packing case. The mold may crack due to the thermal expansion and contraction of the internal materials. The modified packing case can provide protection, and the hot air released by the mold at the moment of mold opening can be absorbed and blocked inside the modified packing case, preventing accidents where the operator is scalded by the hot air.

[0019] 3. Since the mold opening process of the device is relatively gentle, and during the mold opening process, the mold is in a relatively sealed state throughout. The operator can determine whether the mold opening inside is completed through the sound of air flow from the outside, and then take out the mold in a timely manner, improving work efficiency.

[0020] 4. The device uses small springs and buffer springs to perform multi-stage buffering on the inside of the device during the mold opening process. On the one hand, it can ensure the smooth progress of the mold opening work, and on the other hand, it can buffer the impact force received by the device after mold opening. And the device has a maximum mold opening limit, and can control the mold opening force within a certain safe range for operation, which is safer and more reliable.

[0021] 5. The device sets the initial position of the movable tray at a relatively deep position, so that the mold is less disturbed during the cooling process, which is also beneficial to protecting the external operators. And during the process of taking out the mold, the movable tray will not reset quickly under the action of pressure, making it more convenient for the operator to take out the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is the front view of the present invention; Figure 2 is the cross-sectional view of the present invention; Figure 3 is the structural schematic diagram of the pressurizing device of the present invention; Figure 4 is the cross-sectional view of the vertical pipe group of the present invention; Figure 5 is the structural schematic diagram of the ventilation device of the present invention; Figure 6 is the cross-sectional view of the water delivery device of the present invention.

[0023] In the figure: 1, mold box; 2, closed baffle; 3, pressurizing device; 11, refitted box shell; 12, cooling chamber; 13, buffer spring; 14, movable tray; 15, sliding side shell; 16, fixed insert bar; 17, tension arm; 31, fixed rotator; 32, turbine rotating rod; 33, connecting sleeve; 34, fixed conduit; 4, vertical pipe group; 41, fixed pipe shell; 42, side baffle; 43, limiting sliding pipe; 44, small spring; 5, ventilation device; 51, fixed rotating rod; 52, support plate; 53, telescopic arm; 54, vertical sliding plate; 55, elastic balance belt; 56, main ventilation opening; 57, auxiliary ventilation opening; 6, water delivery device; 61, water delivery pipe; 62, extended sliding disc; 63, open port; 64, side opening; 65, heat insulation sandwich panel. Detailed implementation manners

[0024] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners. The embodiments of the present invention are given for the purpose of illustration and description, and are not exhaustive or limit the present invention to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and enable those of ordinary skill in the art to understand the present invention and thus design various embodiments with various modifications suitable for specific purposes.

[0025] Embodiment 1

[0026] Please refer to Figures 1-4 , the present invention provides a technical solution: an outer mold of a casting machine for buffering the mold opening force, including a mold box 1, characterized in that: a closed baffle 2 is clamped on the upper surface of the mold box 1, and a pressurizing device 3 is arranged at the center of the lower surface of the mold box 1.

[0027] The mold box 1 includes a modified box shell 11. At the axis of the lower part of the inner wall of the modified box shell 11, a buffer spring 13 is fixedly connected. The top of the buffer spring 13 is fixedly connected with a movable tray 14. On the left and right sides of the axis of the modified box shell 11, sliding side shells 15 are symmetrically arranged. The upper part of the inner wall of the sliding side shell 15 is slidably connected with a fixed insert 16. On the left and right sides of the outer surface of the movable tray 14, tension arms 17 are symmetrically arranged. On the left and right sides of the upper part of the inner wall of the modified box shell 11, ventilation devices 5 are symmetrically arranged. In the lower part of the inner wall of the modified box shell 11, a cooling chamber 12 is opened. On the left and right sides of the cooling chamber 12, water supply devices 6 are symmetrically arranged. Before using this device for casting work, open the upper closed baffle 2, then fixedly install a mold on the upper surface of the movable tray 14. After injecting the molten raw material into the mold, press down the closed baffle 2 to seal it. The bottom end of the closed baffle 2 is stuck into the inner wall of the modified box shell 11, and the side of the sliding side shell 15 is clamped with the upper corner of the mold. Then, inject water into the inside of the cooling chamber 12 through the water supply device 6 until the inside of the cooling chamber 12 is filled with water, and the mold placed on the upper surface of the movable tray 14 is cooled down.

[0028] The pressurizing device 3 includes a fixed rotating machine 31. On the outer surface of the output shaft of the fixed rotating machine 31, a turbine rotating rod 32 is fixedly connected. On the outer surface of the turbine rotating rod 32, a connecting sleeve 33 is rotatably connected. On the inner wall of the connecting sleeve 33, fixed conduits 34 are evenly arranged. The top of the fixed conduit 34 is fixedly connected with a vertical pipe group 4.

[0029] The vertical pipe group 4 includes a fixed pipe shell 41. The upper part of the inner wall of the fixed pipe shell 41 is movably connected with a limiting sliding pipe 43. The lower part of the outer surface of the limiting sliding pipe 43 is sleeved with a small spring 44. The middle part of the outer surface of the limiting sliding pipe 43 is slidably connected with a side baffle 42.

[0030] The number of the vertical pipe groups 4 is four, and the number of the fixed conduits 34 is four. The top of the fixed conduit 34 extends into the inside of the cooling chamber 12 through a through hole. The upper part of the outer surface of the fixed conduit 34 is slidably connected with the lower part of the inner wall of the fixed pipe shell 41. The bottom end of the fixed pipe shell 41 is fixedly connected with the lower part of the inner wall of the modified box shell 11. The upper part of the outer surface of the connecting sleeve 33 is fixedly connected with the lower surface of the modified box shell 11. The outer surface of the side baffle 42 is fixedly connected with the upper part of the inner wall of the fixed pipe shell 41. The top of the limiting sliding pipe 43 extends to the outside of the fixed pipe shell 41, and the top of the limiting sliding pipe 43 is fixedly connected with the lower surface of the closed baffle 2.

[0031] There are two sliding side shells 15. The left and right sides of the outer surface of the sliding side shells 15 are slidably connected to the upper part of the inner wall of the modified packing case 11. There are two fixed inserts 16. The upper part of the fixed inserts 16 is fixedly connected to the upper part of the inner wall of the modified packing case 11. The top end of the tension arm 17 is fixedly connected to the lower part of the outer surface of the closing baffle 2. The bottom end of the tension arm 17 is slidably connected to the side surface of the movable tray 14. The side surface of the movable tray 14 is slidably connected to the upper part of the inner wall of the modified packing case 11. A mold is fixedly connected to the upper surface of the movable tray 14.

[0032] After a period of time, the model has cooled and solidified. The fixed rotator 31 is controlled to rotate the turbine rotating rod 32 clockwise. During the rotation of the turbine rotating rod 32, the air below is introduced into the inside of the connecting sleeve 32 and passed into the inside of the vertical pipe group 4 through the fixed conduit 34.

[0033] As the gas introduced through the fixed conduit 34 gradually increases, and the top end of the limit sliding pipe 43 is blocked by the lower surface of the closing baffle 2, the pressure inside the fixed pipe shell 41 gradually increases. The pressure pushes the closing baffle 2 upward, and the limit sliding pipe 43 slides upward. During the upward movement of the closing baffle 2, the lower surface of the closing baffle 2 pushes the sliding side shell 15 upward through the tension arm 17, thereby pulling the mold upward. The buffer spring 13 is gradually stretched, and the pulling force of the buffer spring 13 gradually increases. Until the pressure inside the fixed pipe shell 41 is large enough, due to the excessive pulling force, at this time, the mold above the movable tray is separated by the pulling forces on the upper and lower sides. During this process, the buffer spring 13 is stretched by a certain amount. Then, the upper movable tray 14 is pulled downward, and the mold is completely separated. Subsequently, the closing baffle 2 is pulled, and the mold after internal mold opening is taken out to obtain the finished mold part.

[0034] Embodiment 2

[0035] Please refer to Figure 1 、 Figure 2 、 Figure 5 The present invention provides a technical solution: on the basis of Embodiment 1, an outer mold of a casting machine for buffering the mold opening force, including a casting mold box 1, characterized in that: a closing baffle 2 is clamped on the upper surface of the casting mold box 1, and a pressurizing device 3 is arranged at the center of the lower surface of the casting mold box 1.

[0036] The mold box 1 includes a modified box shell 11. At the center of the lower part of the inner wall of the modified box shell 11, a buffer spring 13 is fixedly connected. The top end of the buffer spring 13 is fixedly connected with a movable tray 14. On the left and right sides symmetrically at the center of the modified box shell 11, sliding side shells 15 are provided. At the upper part of the inner wall of the sliding side shell 15, a fixed insertion bar 16 is slidably connected. On the left and right sides symmetrically on the outer surface of the movable tray 14, tension arms 17 are provided. On the left and right sides symmetrically at the upper part of the inner wall of the modified box shell 11, a ventilation device 5 is provided. At the lower part of the inner wall of the modified box shell 11, a cooling chamber 12 is opened. On the left and right sides symmetrically of the cooling chamber 12, a water delivery device 6 is provided.

[0037] There are two sliding side shells 15. The left and right sides of the outer surface of the sliding side shell 15 are slidably connected with the upper part of the inner wall of the modified box shell 11. There are two fixed insertion bars 16. The upper part of the fixed insertion bar 16 is fixedly connected with the upper part of the inner wall of the modified box shell 11. The top end of the tension arm 17 is fixedly connected with the lower part of the outer surface of the closing baffle 2. The bottom end of the tension arm 17 is slidably connected with the side surface of the movable tray 14. The side surface of the movable tray 14 is slidably connected with the upper part of the inner wall of the modified box shell 11. The upper surface of the movable tray 14 is fixedly connected with a mold.

[0038] The ventilation device 5 includes a fixed rotating rod 51. At the lower part of the outer surface of the fixed rotating rod 51, a support plate 52 is rotatably connected. On both the left and right sides of the outer surface of the fixed rotating rod 51, telescopic arms 53 are provided. On the side of the outer surface of the fixed rotating rod 51 far from the movable tray 14, a vertical sliding plate 54 is fixedly connected through the telescopic arm 53. On the upper and lower sides of the outer surface of the vertical sliding plate 54, elastic balance belts 55 are fixedly connected.

[0039] On one side of the inner cavity of the modified box shell 11 close to the vertical sliding plate 54, a secondary ventilation opening 57 is opened. On the side of the inner cavity of the modified box shell 11 far from the vertical sliding plate 54, a main ventilation opening 56 is opened.

[0040] On the side of the outer surface of the fixed rotating rod 51 close to the movable tray 14, it is fixedly connected with the lower part of the outer surface of the tension arm 17 through the telescopic arm 53. The bottom end of the support plate 52 is fixedly connected with the upper part of the inner wall of the modified box shell 11. The middle part of the outer surface of the fixed rotating rod 51 is rotatably connected with the top end of the support plate 52. On the side of the outer surface of the vertical sliding plate 54 far from the telescopic arm 53, it is slidably connected with the inner wall of the modified box shell 11. The top end of the telescopic arm 53 is fixedly connected with the outer surface of the fixed rotating rod 51.

[0041] The horizontal height of the secondary ventilation opening 57 is lower than the horizontal height of the main ventilation opening 56, and the main ventilation opening 56 and the secondary ventilation opening 57 intersect with each other.

[0042] During the mold opening process, the tension arms 17 pull the telescopic arms 53 on both sides upward. The top of the telescopic arm 53 controls the rotation of the telescopic arm 53 on the other side through the fixed rotating rod 51, thereby sliding the vertical slide plate 54 downward. At this time, the auxiliary ventilation openings 57 are opened. When the mold is opened instantaneously, the pressure gas released inside the mold first passes through the gap between the fixed insert 16 and the inner wall of the modified box shell 11, and finally is discharged to the outside through the auxiliary ventilation openings 57 on both sides. Since the main ventilation opening 56 and the auxiliary ventilation opening 57 intersect with each other, the gas will pass through the gap between the auxiliary ventilation opening 57 and the main ventilation opening 56, thereby making a sound. At this time, the operator can hear the sound from the outside, and then determine that the internal mold opening is completed.

[0043] Because the mold opening process of this device is relatively gentle, and during the mold opening process, the mold is in a relatively sealed state throughout. And through the sound of air flow that the operator can hear from the outside, it can be determined whether the internal mold opening is completed, so as to take out the mold in time and improve work efficiency.

[0044] Embodiment III

[0045] Please refer to Figure 1 、 Figure 2 、 Figure 6 The present invention provides a technical solution: on the basis of Embodiment I, an external mold of a casting machine for buffering the mold opening force, including a casting mold box 1, characterized in that: a closed baffle 2 is clamped on the upper surface of the casting mold box 1, and a pressurizing device 3 is arranged at the center of the lower surface of the casting mold box 1.

[0046] The casting mold box 1 includes a modified box shell 11. A buffer spring 13 is fixedly connected to the center of the lower part of the inner wall of the modified box shell 11. The top of the buffer spring 13 is fixedly connected to a movable tray 14. Symmetrically arranged on the left and right sides of the center of the modified box shell 11 are sliding side shells 15. The upper part of the inner wall of the sliding side shell 15 is slidably connected to a fixed insert 16. Symmetrically arranged on the left and right sides of the outer surface of the movable tray 14 are tension arms 17. Symmetrically arranged on the left and right sides of the upper part of the inner wall of the modified box shell 11 are ventilation devices 5. A cooling chamber 12 is opened in the lower part of the inner wall of the modified box shell 11. Symmetrically arranged on the left and right sides of the cooling chamber 12 are water supply devices 6.

[0047] The number of the sliding side shells 15 is two. The left and right sides of the outer surface of the sliding side shell 15 are slidably connected to the upper part of the inner wall of the modified box shell 11. The number of the fixed inserts 16 is two. The upper part of the fixed insert 16 is fixedly connected to the upper part of the inner wall of the modified box shell 11. The top of the tension arm 17 is fixedly connected to the lower part of the outer surface of the closed baffle 2. The bottom end of the tension arm 17 is slidably connected to the side surface of the movable tray 14. The side surface of the movable tray 14 is slidably connected to the upper part of the inner wall of the modified box shell 11. A mold is fixedly connected to the upper surface of the movable tray 14.

[0048] The ventilation device 5 includes a fixed rotating rod 51. The lower part of the outer surface of the fixed rotating rod 51 is rotatably connected to a support plate 52. On both the left and right sides of the outer surface of the fixed rotating rod 51, telescopic arms 53 are provided. On the side of the outer surface of the fixed rotating rod 51 away from the movable tray 14, a vertical slide plate 54 is fixedly connected through the telescopic arm 53. Elastic balance belts 55 are fixedly connected to the upper and lower sides of the outer surface of the vertical slide plate 54.

[0049] On one side of the inner cavity of the modified box shell 11 close to the vertical slide plate 54, a secondary ventilation opening 57 is provided. On the side of the inner cavity of the modified box shell 11 away from the vertical slide plate 54, a main ventilation opening 56 is provided.

[0050] The water delivery device 6 includes a side opening 64. The inner wall of the side opening 64 is fixedly connected with a heat insulation sandwich panel 65. In the middle of the inner wall of the heat insulation sandwich panel 65, a water delivery pipe 61 is fixedly connected. On the side of the inner wall of the water delivery pipe 61 close to the buffer spring 13, an extended sliding disk 62 is slidably connected. In the middle of the inner wall of the extended sliding disk 62, open ports 63 are evenly provided.

[0051] One end of the water delivery pipe 61 close to the buffer spring 13 extends into the interior of the modified box shell 11. The outer surface of the extended sliding disk 62 is slidably connected with the inner wall of the heat insulation sandwich panel 65. The bottom end of the extended sliding disk 62 is slidably connected with the inner wall of the water delivery pipe 61.

[0052] Before mold opening, the user injects water into the interior of the cooling chamber 12 through the water delivery pipe 61 to ensure that the internal temperature of the device is in a low temperature state, enabling the components inside the mold to be quickly formed. During the process of mold opening, since the movable tray 14 will rise under the action of the pulling force, the volume inside the cooling chamber 12 increases and the pressure decreases. Therefore, the outside air will push the extended sliding disk 62 into the interior of the cooling chamber 12, and then the open ports 63 of the extended sliding disk 62 will slide into the interior of the cooling chamber 12. After the interior of the cooling chamber 12 is pressurized, when the mold opening is completed, the buffer spring 13 has a tendency to pull the movable tray 14 back to its original position. However, the pressure inside the lower cooling chamber 12 is the same as the external air pressure. At this time, the bottom end of the extended sliding disk 62 retracts into the interior of the water delivery pipe 61. Because the device cannot actually be completely sealed, the air pressure inside the cooling chamber 12 will slowly be discharged to the outside through the relevant gaps. The buffer spring 13 slowly resets, and the movable tray 14 slowly slides down. During this period, the operator can take out the mold directly above the movable tray 14, and then the movable tray 14 slides deep into the device.

[0053] Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art and related fields based on the embodiments in the present invention without creative efforts shall fall within the scope of protection of the present invention. The structures, devices, and operation methods not specifically described and explained in the present invention, unless otherwise specified and limited, are implemented according to the conventional means in the art.

Claims

1. An external mold of a casting machine for buffering the mold opening force, comprising a mold box (1), characterized in that: A closed baffle (2) is snap-connected to the upper surface of the mold box (1), and a pressurizing device (3) is arranged at the center of the lower surface of the mold box (1); The mold box (1) includes a modified box shell (11). A buffer spring (13) is fixedly connected to the center of the lower part of the inner wall of the modified box shell (11). The top of the buffer spring (13) is fixedly connected to a movable tray (14). Sliding side shells (15) are symmetrically arranged on the left and right sides of the center of the modified box shell (11). A fixed insertion bar (16) is slidably connected to the upper part of the inner wall of the sliding side shell (15). Tension arms (17) are symmetrically arranged on the left and right sides of the outer surface of the movable tray (14). Ventilation devices (5) are symmetrically arranged on the left and right sides of the upper part of the inner wall of the modified box shell (11). A cooling chamber (12) is opened in the lower part of the inner wall of the modified box shell (11). Water delivery devices (6) are symmetrically arranged on the left and right sides of the cooling chamber (12); The pressurizing device (3) includes a fixed rotating machine (31). A turbine rotating rod (32) is fixedly connected to the outer surface of the output shaft of the fixed rotating machine (31). A connecting sleeve (33) is rotatably connected to the outer surface of the turbine rotating rod (32). Fixed conduits (34) are uniformly arranged on the inner wall of the connecting sleeve (33). The top of the fixed conduit (34) is fixedly connected to a vertical pipe group (4); The vertical pipe group (4) includes a fixed pipe shell (41). A limiting sliding pipe (43) is movably connected to the upper part of the inner wall of the fixed pipe shell (41). A small spring (44) is sleeved on the lower part of the outer surface of the limiting sliding pipe (43). A side baffle (42) is slidably connected to the middle part of the outer surface of the limiting sliding pipe (43).

2. The external mold of a casting machine for buffering the mold opening force according to claim 1, wherein: The number of the vertical pipe groups (4) is four, and the number of the fixed conduits (34) is four. The top of the fixed conduit (34) extends into the interior of the cooling chamber (12) through a through hole. The upper part of the outer surface of the fixed conduit (34) is slidably connected to the lower part of the inner wall of the fixed pipe shell (41). The bottom end of the fixed pipe shell (41) is fixedly connected to the lower part of the inner wall of the modified box shell (11). The upper part of the outer surface of the connecting sleeve (33) is fixedly connected to the lower surface of the modified box shell (11). The outer surface of the side baffle (42) is fixedly connected to the upper part of the inner wall of the fixed pipe shell (41). The top end of the limiting sliding pipe (43) extends to the outside of the fixed pipe shell (41), and the top end of the limiting sliding pipe (43) is fixedly connected to the lower surface of the closed baffle (2).

3. The outer mold of a casting machine for buffering the mold opening force according to claim 1, characterized in that: The number of the sliding side shells (15) is two. The left and right sides of the outer surface of the sliding side shells (15) are slidably connected to the upper part of the inner wall of the modified packing case (11). The number of the fixed inserting strips (16) is two. The upper part of the fixed inserting strips (16) is fixedly connected to the upper part of the inner wall of the modified packing case (11). The top end of the tension arm (17) is fixedly connected to the lower part of the outer surface of the closing baffle (2). The bottom end of the tension arm (17) is slidably connected to the side surface of the movable tray (14). The side surface of the movable tray (14) is slidably connected to the upper part of the inner wall of the modified packing case (11). A mold is fixedly connected to the upper surface of the movable tray (14).

4. A casting machine outer mold for buffering the mold opening force according to claim 1, characterized in that: The ventilation device (5) includes a fixed rotating rod (51). A support plate (52) is rotatably connected to the lower part of the outer surface of the fixed rotating rod (51). Telescopic arms (53) are arranged on both the left and right sides of the outer surface of the fixed rotating rod (51). A vertical sliding plate (54) is fixedly connected to the side of the outer surface of the fixed rotating rod (51) far away from the movable tray (14) through the telescopic arm (53). Elastic balancing belts (55) are fixedly connected to the upper and lower sides of the outer surface of the vertical sliding plate (54).

5. The outer mold of a casting machine for buffering the mold opening force according to claim 4, characterized in that: A secondary ventilation opening (57) is formed in the inner cavity of the modified packing case (11) on the side close to the vertical sliding plate (54), and a main ventilation opening (56) is formed in the inner cavity of the modified packing case (11) on the side far away from the vertical sliding plate (54).

6. The outer mold of a casting machine for buffering the mold opening force according to claim 5, characterized in that: The side of the outer surface of the fixed rotating rod (51) close to the movable tray (14) is fixedly connected to the lower part of the outer surface of the tension arm (17) through the telescopic arm (53). The bottom end of the support plate (52) is fixedly connected to the upper part of the inner wall of the modified packing case (11). The middle part of the outer surface of the fixed rotating rod (51) is rotatably connected to the top end of the support plate (52). The side of the outer surface of the vertical sliding plate (54) far away from the telescopic arm (53) is slidably connected to the inner wall of the modified packing case (11). The top end of the telescopic arm (53) is fixedly connected to the outer surface of the fixed rotating rod (51).

7. The external mold of a casting machine for buffering the mold opening force according to claim 1, characterized in that: The water conveying device (6) includes a side opening (64). A heat insulation sandwich panel (65) is fixedly connected to the inner wall of the side opening (64). A water conveying pipe (61) is fixedly connected to the middle part of the inner wall of the heat insulation sandwich panel (65). An extended sliding disc (62) is slidably connected to the side of the inner wall of the water conveying pipe (61) close to the buffer spring (13). Openings (63) are uniformly formed in the middle part of the inner wall of the extended sliding disc (62).

8. The outer mold of a casting machine for buffering the mold opening force according to claim 7, characterized in that: One end of the water conveying pipe (61) close to the buffer spring (13) extends into the inside of the modified packing case (11). The outer surface of the extended sliding disc (62) is slidably connected to the inner wall of the heat insulation sandwich panel (65). The bottom end of the extended sliding disc (62) is slidably connected to the inner wall of the water conveying pipe (61).

9. The external mold of a casting machine for buffering the mold opening force according to claim 5, characterized in that: The horizontal height of the secondary ventilation opening (57) is lower than that of the main ventilation opening (56), and the main ventilation opening (56) and the secondary ventilation opening (57) are staggered with each other.

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