A three-dimensional vibration compaction table for lost foam sand box

Abstract

The present invention relates to a three-dimensional vibration compaction table for a lost foam sand box, which belongs to the field of mechanical vibration compaction technology and solves the technical problems that the traditional sand box to be vibrated is not firmly clamped and the vibration compaction effect is not good. The solution is: a three-dimensional vibration compaction table for a lost foam sand box, including a base, several groups of pillars, several groups of air springs, a vibration table, several groups of vibration motors, and at least two groups of clamping devices for air sources. The clamping devices include a cylinder, a cylinder fixing seat, a clamping block and a control system. The cylinder and the vibration motor are electrically connected to the control system respectively; a first support platform, a second support platform and a third support platform with the same height size are sequentially arranged in the length direction of the middle part of the top surface of the vibration table, and the three-dimensional vibration compaction table is arranged below the running track of the sand box. The present invention has a simple structure, is stable and reliable, and the operating noise is greatly reduced. The improvement of the clamping degree makes full use of the vibration source energy of the vibration compaction table, realizes the best filling, and makes the vibration compaction effect better.

Description

Technical Field

[0001] The invention belongs to the technical field of mechanical compaction, and particularly relates to a three-dimensional compaction table for a lost foam sand box. Background Art

[0002] Lost foam casting is a new technology with nearly zero excess and precise forming. It is a new casting method that combines foamed models with similar size and shape to the casting into a model cluster, then brushes refractory coating on it and dries it, buries it in gemstone sand or dry quartz sand for vibration molding, and then pours it to vaporize the model. Subsequently, liquid metal occupies the position of the model, and the liquid metal solidifies and cools to form a casting. When the foamed model is placed in the sand box to be vibrated, gemstone sand or dry quartz sand should be poured in and vibrated. The gemstone sand or dry quartz sand should be fully vibrated, and the gemstone sand or dry quartz sand should be fully surrounded around the foamed model and fill the internal holes.

[0003] The vibration table is one of the key equipments in lost foam casting. It not only needs to vibrate and compact the mold sand, but also needs to fill every corner of the outer layer of the complex and varied geometric shapes of different castings. The main directions in which the mold sand of different castings needs to be filled are not consistent, and it is also necessary to fill in several directions. The greater the vibration acceleration, the greater the filling and compacting capacity, but it increases the possibility of deformation of the foam mold and even the shedding of the coating. The reduced vibration acceleration cannot meet the technical requirements of filling and vibration compaction, and mold collapse and sand sticking problems occur repeatedly.

[0004] In the prior art, the vibrating table clamps the sand box to be vibrated by clamping up and down, and finally fixes the sand box to be vibrated by applying downward force. This clamping method has a complex structure and is not firm. The sand box to be vibrated has a tendency to move laterally, which can easily affect the vibrating effect and further affect the final vibrating effect. In addition, the existing clamping device is tightened from top to bottom by a cylinder and structural parts, and there is no clamping device on the side. The sand box is very heavy, and the downward force of the sand box's own weight + the weight of the molding sand can completely solve the problem of clamping under upper and lower forces. In addition, it is generally necessary to manually move the sand box to be vibrated, which is time-consuming and labor-intensive, and reduces efficiency. Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a three-dimensional vibrating table for a lost foam sand box, which solves the technical problems of loose clamping of the traditional sand box to be vibrated, environmental pollution caused by noise during operation, poor vibrating effect and low efficiency.

[0006] In order to solve the above problems, the technical solution of the present invention is: a three-dimensional vibration table of a lost foam sand box, comprising a base, several groups of pillars, several groups of air springs, a vibration table, several groups of vibration motors and an air source, several groups of the pillars are vertically arranged on the top surface of the base, and each group of the pillars is provided with a group of air springs at the top, the vibration table is fixedly installed on the top surface of the air spring, and the vibration motor is provided around and at the bottom of the vibration table; the air spring is connected to the air source through an air pipe, wherein: the three-dimensional vibration table is installed in the vibration table accommodating cavity below the sand box running track at the vibration operation station, two groups of sand box shafts parallel to the width direction of the sand box to be vibrated are fixedly arranged on both sides of the bottom surface of the sand box to be vibrated, and sand box moving wheels are rotatably installed at both ends of the sand box shaft, the sand box to be vibrated is arranged above the sand box running track, and the sand box moving wheels are respectively installed on the sand box running track corresponding to the lower side; the sand box to be vibrated reciprocates along the sand box running track through the sand box moving wheels;

[0007] A first support platform, a second support platform and a third support platform with the same height are sequentially arranged in the middle of the top surface of the vibration table along the running direction of the sand box, a first sand box shaft placement area is arranged between the first support platform and the second support platform, and a second sand box shaft placement area is arranged between the second support platform and the third support platform;

[0008] The three-dimensional vibration table also includes at least two groups of clamping devices, wherein the two groups of clamping devices are symmetrically installed on both sides of the width direction of the vibration table; the clamping device includes a cylinder, a cylinder fixing seat, a clamping block and a control system, the cylinder fixing seat is fixedly installed on the side wall of the vibration table in the width direction, the cylinder is horizontally installed on the cylinder fixing seat, the axis of the cylinder is parallel to the width direction of the sand box to be vibrated, and the piston rod of the cylinder faces the inner side of the three-dimensional vibration table, the clamping block is fixed to the piston rod head of the cylinder, and the cylinder and the vibration motor are electrically connected to the control system respectively.

[0009] Furthermore, the cylinder fixing seat includes a cylinder supporting seat and a cylinder thrust seat, the cylinder supporting seat is arranged on the extension plates on both sides of the width direction of the vibration table, and a rib plate is arranged between the extension plate and the side wall of the vibration table, and the cylinder thrust seat is arranged on the outer side of the top surface of the cylinder supporting seat, the tail end of the cylinder is fixedly connected to the cylinder thrust seat, and the front end of the cylinder body of the cylinder is fixedly connected to the cylinder supporting seat through an angle steel.

[0010] Furthermore, a protective cover is provided on the top surface of the cylinder support seat, and the cylinder is arranged in the protective cover.

[0011] Furthermore, four groups of the clamping devices are provided, and two groups of the clamping devices are evenly distributed on both sides in the width direction of the vibration table.

[0012] Furthermore, the width dimension of the compaction table is greater than the width dimension of the sand box to be compacted, and the length dimension of the sand box axis is greater than the width dimensions of the first support table, the second support table and the third support table, and the width dimensions of the first support table, the second support table and the third support table are the same.

[0013] Furthermore, when the three-dimensional vibration table is in an initial state, the top surface of the first support table is lower than the sand box axis, and the piston rod of the cylinder is higher than the top surface of the first support table; when the three-dimensional vibration table is in a clamped state, the top surfaces of the first support table, the second support table and the third support table coincide with the bottom surface of the sand box to be vibrated, and the clamping blocks at the ends of the cylinder piston rod clamp the side walls of the sand box to be vibrated.

[0014] Furthermore, a buffer silicone sleeve is arranged outside the clamping block.

[0015] Furthermore, a guide sleeve is vertically arranged in the air spring, the guide sleeve is sleeved on the upper part of the pillar, the top surface of the guide sleeve is fixed to the top surface of the air spring, and the guide sleeve slides up and down along the pillar under the deformation of the air spring.

[0016] Furthermore, a solenoid valve is provided on the air pipe, and the solenoid valve is electrically connected to the control system.

[0017] Furthermore, a proximity switch and a warning light are provided on the sand box running track on the front side of the three-dimensional vibration compaction table, and the proximity switch and the warning light are electrically connected to the control system.

[0018] The beneficial effects of the present invention are:

[0019] 1. The present invention adopts the cylinder in the clamping device to control the extension of the clamping block, so as to realize the horizontal clamping of the sand box to be vibrated, eliminating the traditional upper and lower clamping structure. The dead weight of the sand box to be vibrated realizes the fixation of the sand box to be vibrated in the vertical direction, and the structure is more streamlined and simple;

[0020] 2. The first support platform, the second support platform and the third support platform on the vibration table lift the sand box to be vibrated after the air spring is raised, so that the sand box to be vibrated leaves the sand box running track and can be vibrated better and more thoroughly. The arrangement of the first sand box shaft placement area and the second sand box shaft placement area can avoid the interference of the sand box shaft in the vibration process;

[0021] 3. No more lifting equipment is needed to transport the sand box to be vibrated. The sand box shaft and sand box moving wheels are set at the bottom of the sand box to be vibrated. The sand box to be vibrated is slid to the top of the three-dimensional vibrating table on the sand box running track. After the vibrating is completed, the sand box to be vibrated is dropped back to the sand box running track, and can be transported to the next process with ease. It is simple, fast, time-saving and labor-saving.

[0022] 4. Under the control of the control system, the vibration work becomes more automated. When the sand box to be vibrated moves forward, the proximity switch detects that the sand box to be vibrated has reached the position, and transmits the signal to the control system. The control system controls the warning light to light up, and the sand box to be vibrated no longer moves. After the sand box to be vibrated reaches the specified position, the control system controls the air source and the solenoid valve. Under the action of the air spring, when the vibration table rises to the highest point, the control system controls the cylinder to work, and the clamping blocks on the cylinders on both sides clamp the side walls of the sand box to be vibrated. It has a high degree of automation and efficiency, and does not require manual post-adjustment.

[0023] 5. The cylinder support seat, cylinder thrust seat and angle steel are all used to fix the cylinder, so that the cylinder is fixed and stable, and will not loosen or shift during the vibration of the vibration table, ensuring the clamping effect and vibration compaction effect;

[0024] 6. The setting of the buffer silicone sleeve outside the clamping block increases the contact friction and enhances the clamping effect.

[0025] The invention has a simple structure and realizes transverse clamping of the sand box to be compacted through the clamping action of the clamping device. It is stable and reliable, and the operating noise is greatly reduced. The improvement of the clamping degree makes full use of the vibration source energy of the compaction table, realizes optimal filling, and makes the compaction effect better. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the present invention;

[0027] Figure 2 for Figure 1 A side view without the clamping device;

[0028] Figure 3 for Figure 1 Schematic diagram of the structure of the clamping device in the clamping state. DETAILED DESCRIPTION

[0029] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0030] like Figures 1 to 3The one shown in the figure, the X-axis direction in the figure is the length direction of the sand box 8 to be vibrated, the vibration table 4 and the sand box running track 9, the Y-axis direction in the figure is the width direction of the sand box 8 to be vibrated and the vibration table 4, the lost foam sand box to be vibrated three-dimensional vibration table includes a base 1, several groups of pillars 2, several groups of air springs 3, a vibration table 4, several groups of vibration motors 5 and an air source 6, several groups of the pillars 2 are vertically arranged on the top surface of the base 1, and each group of the pillars 2 is provided with a group of air springs 3 at the top, the vibration table 4 is fixedly installed on the top surface of the air spring 3, and the vibration motor 5 is provided around and at the bottom of the vibration table 4; the air spring 3 is connected to the air source 6 through an air pipe 7, wherein: the three-dimensional vibration table is installed In the compaction table accommodating cavity 9-3 below the sand box running track 9 at the compaction operation station, two groups of sand box shafts 8-1 parallel to the width direction of the sand box 8 to be compacted are fixedly arranged on both sides of the bottom surface of the sand box 8 to be compacted, and sand box moving wheels 8-2 are rotatably installed at both ends of the sand box shafts 8-1. The sand box 8 to be compacted is arranged above the sand box running track 9, and the sand box moving wheels 8-2 are respectively installed on the sand box running track 9 corresponding to the lower side; the sand box 8 to be compacted reciprocates along the sand box running track 9 through the sand box moving wheels 8-2; the sand box 8 to be compacted can be moved on the sand box running track 9, and there is no need to manually carry and hoist the position of the sand box 8 to be compacted, which saves time and effort.

[0031] The first support platform 4-1, the second support platform 4-2 and the third support platform 4-3 with the same height dimensions are arranged in sequence in the middle part of the top surface of the vibration table 4 along the running direction of the sand box, a first sand box shaft placement area 4-4 is arranged between the first support platform 4-1 and the second support platform 4-2, and a second sand box shaft placement area 4-5 is arranged between the second support platform 4-2 and the third support platform 4-3; the arrangement of the first sand box shaft placement area 4-4 and the second sand box shaft placement area 4-5 ensures that there will be no interference with the support of the first support platform 4-1, the second support platform 4-2 and the third support platform 4-3 during the lifting process.

[0032] The three-dimensional vibration table also includes at least two groups of clamping devices 10, wherein the two groups of the clamping devices 10 are symmetrically installed on both sides of the width direction of the vibration table 4; the clamping device 10 includes a cylinder 10-1, a cylinder fixing seat 10-2, a clamping block 10-3 and a control system, the cylinder fixing seat 10-2 is fixedly installed on the side wall of the vibration table 4 in the width direction, the cylinder 10-1 is horizontally installed on the cylinder fixing seat 10-2, the axis of the cylinder 10-1 is parallel to the width direction of the sand box 8 to be vibrated, and the piston rod of the cylinder 10-1 faces the inside of the three-dimensional vibration table, the clamping block 10-3 is fixed to the piston rod head of the cylinder 10-1, and the cylinder 10-1 and the vibration motor 5 are electrically connected to the control system respectively;

[0033] Furthermore, the cylinder fixing seat 10-2 includes a cylinder support seat 10-2-1 and a cylinder thrust seat 10-2-2. The cylinder support seat 10-2-1 is arranged on the extension plates 4-6 on both sides of the width direction of the vibration platform 4. A rib plate 4-7 is arranged between the extension plate 4-6 and the side wall of the vibration platform 4. The cylinder thrust seat 10-2-2 is arranged on the outer side of the top surface of the cylinder support seat 10-2-1. The tail end of the cylinder 10-1 is fixedly connected to the cylinder thrust seat 10-2-2. The front end of the cylinder body of the cylinder 10-1 is fixedly connected to the cylinder support seat 10-2-1 through the angle steel 4-8. Since the cylinder 10-1 will vibrate during the vibration process, the arrangement of the cylinder support seat 10-2-1, the cylinder thrust seat 10-2-2 and the angle steel 4-8 ensures the stability of the cylinder 10-1 and prevents the cylinder 10-1 from sliding during the vibration process to affect the vibration effect.

[0034] Furthermore, a protective cover 10-4 is provided on the top surface of the cylinder support seat 10-2-1, and the cylinder 10-1 is arranged in the protective cover 10-4, which plays a protective role on the cylinder 10-1.

[0035] Furthermore, four groups of the clamping devices 10 are provided, and two groups of the clamping devices 10 are evenly distributed on both sides of the vibration table 4 in the width direction.

[0036] Furthermore, the width dimension of the vibration table 4 is larger than the width dimension of the sand box 8 to be vibrated, leaving a margin for the movement of the cylinder 10-1 and the extension of its piston rod during the rising and extending process. The length dimension of the sand box axis 8-1 is larger than the width dimension of the first support platform 4-1, the second support platform 4-2 and the third support platform 4-3. The length of the sand box axis 8-1 is larger than the width of the first support platform 4-1, which will not affect the movement of the sand box 8 to be vibrated, and the sand box 8 to be vibrated can pass through the three-dimensional vibration table smoothly. The width dimensions of the first support platform 4-1, the second support platform 4-2 and the third support platform 4-3 are the same.

[0037] Furthermore, in the initial state of the three-dimensional vibration table, the top surface of the first support platform 4-1 is lower than the sand box axis 8-1, and the piston rod of the cylinder 10-1 is higher than the top surface of the first support platform 4-1. Only when it is higher than the top surface of the first support platform 4-1, after the first support platform 4-1 lifts the sand box 8 to be vibrated, can the cylinder 10-1 clamp the sand box 8 to be vibrated, which is the prerequisite for clamping. In the clamped state of the three-dimensional vibration table, the top surfaces of the first support platform 4-1, the second support platform 4-2 and the third support platform 4-3 coincide with the bottom surface of the sand box 8 to be vibrated, and the clamping block 10-3 at the end of the piston rod of the cylinder 10-1 clamps the side walls of the sand box 8 to be vibrated.

[0038] Furthermore, a buffer silicone sleeve is provided on the outside of the clamping block 10-3, so as to achieve a better clamping effect.

[0039] Furthermore, a guide sleeve 3-1 is vertically arranged in the air spring 3, the guide sleeve 3-1 is sleeved on the upper part of the pillar 2, the top surface of the guide sleeve 3-1 is fixed to the top surface of the air spring 3, and the guide sleeve 3-1 slides up and down along the pillar 2 under the deformation of the air spring 3. The setting of the guide sleeve 3-1 effectively controls the vibration table from horizontal displacement during the up and down movement, ensuring accurate positioning in the horizontal direction.

[0040] Furthermore, the air pipe 7 is provided with a solenoid valve 7 - 1 , and the solenoid valve 7 - 1 is electrically connected to the control system.

[0041] Furthermore, a proximity switch 9-1 and a warning light 9-2 are provided on the sand box running track 9 on the front side of the three-dimensional vibration compaction table, and the proximity switch 9-1 and the warning light 9-2 are electrically connected to the control system.

[0042] Working process of the present invention:

[0043] The sand box 8 to be vibrated is arranged on the sand box running track 9, and the sand box 8 to be vibrated is sent to the top of the three-dimensional vibrating table. When the proximity switch 9-1 detects the signal of the sand box 8 to be vibrated, the signal is transmitted to the control system, and the control system controls the warning light 9-2 to light up, and the sand box 8 to be vibrated stops moving;

[0044] The control system controls the air source 6 and the solenoid valve 7-1. The air source 6 supplies air to the air spring 3 through the air pipe 7. The air spring 3 rises, the vibration table 4 rises, and the first support platform 4-1, the second support platform 4-2 and the third support platform 4-3 support the bottom of the sand box 8 to be vibrated. When it rises to the highest point, the air spring 3 stops rising. At this time, the control system controls the cylinder 10-1 to work, and the clamping blocks 10-3 at the piston rod heads of the four groups of cylinders 10-1 on both sides clamp the side walls of the sand box 8 to be vibrated.

[0045] The vibration motor 5 starts the compaction work, the clamping is firm and the compaction effect is good.

Claims

1. A three-dimensional vibration compaction table for a lost foam sand box, comprising a base (1), a plurality of groups of pillars (2), a plurality of groups of air springs (3), a vibration table (4), a plurality of groups of vibration motors (5) and an air source (6), wherein the plurality of groups of pillars (2) are vertically arranged on the top surface of the base (1), a group of air springs (3) are arranged on the top of each group of pillars (2), the vibration table (4) is fixedly mounted on the top surface of the air springs (3), and the vibration motors (5) are arranged around and on the bottom of the vibration table (4); the air springs (3) are connected to the air source (6) via air pipes (7), and the invention is characterized in that: The three-dimensional vibration table is installed in the vibration table accommodating cavity (9-3) below the sand box running track (9) at the vibration operation station, and two groups of sand box shafts (8-1) parallel to the width direction of the sand box (8) to be vibrated are fixedly arranged on both sides of the bottom surface of the sand box (8) to be vibrated, and sand box moving wheels (8-2) are rotatably installed at both ends of the sand box shaft (8-1). The sand box (8) to be vibrated is arranged above the sand box running track (9), and the sand box moving wheels (8-2) are respectively installed on the sand box running track (9) corresponding to the bottom thereof; the sand box (8) to be vibrated reciprocates along the sand box running track (9) through the sand box moving wheels (8-2); A first support platform (4-1), a second support platform (4-2) and a third support platform (4-3) having the same height dimensions are sequentially arranged in the middle of the top surface of the vibration platform (4) along the running direction of the sand box; a first sand box shaft placement area (4-4) is arranged between the first support platform (4-1) and the second support platform (4-2); and a second sand box shaft placement area (4-5) is arranged between the second support platform (4-2) and the third support platform (4-3); The width dimension of the vibration platform (4) is greater than the width dimension of the sand box (8) to be vibrated, the length dimension of the sand box axis (8-1) is greater than the width dimensions of the first support platform (4-1), the second support platform (4-2) and the third support platform (4-3), and the width dimensions of the first support platform (4-1), the second support platform (4-2) and the third support platform (4-3) are the same; The three-dimensional vibration table further comprises at least two groups of clamping devices (10), wherein the two groups of the clamping devices (10) are symmetrically mounted on both sides of the width direction of the vibration table (4); the clamping device (10) comprises a cylinder (10-1), a cylinder fixing seat (10-2), a clamping block (10-3) and a control system, wherein the cylinder fixing seat (10-2) is fixedly mounted on the side wall of the vibration table (4) in the width direction, the cylinder (10-1) is horizontally mounted on the cylinder fixing seat (10-2), the axis of the cylinder (10-1) is parallel to the width direction of the sand box (8) to be vibrated, and the piston rod of the cylinder (10-1) faces the inside of the three-dimensional vibration table, the clamping block (10-3) is fixed to the piston rod head of the cylinder (10-1), and the cylinder (10-1) and the vibration motor (5) are respectively electrically connected to the control system; The cylinder fixing seat (10-2) comprises a cylinder support seat (10-2-1) and a cylinder thrust seat (10-2-2); the cylinder support seat (10-2-1) is arranged on extension plates (4-6) on both sides of the vibration platform (4) in the width direction; a rib plate (4-7) is arranged between the extension plate (4-6) and the side wall of the vibration platform (4); the cylinder thrust seat (10-2-2) is arranged on the outer side of the top surface of the cylinder support seat (10-2-1); the tail end of the cylinder (10-1) is fixedly connected to the cylinder thrust seat (10-2-2); and the front end of the cylinder body of the cylinder (10-1) is fixedly connected to the cylinder support seat (10-2-1) via an angle steel (4-8); When the three-dimensional vibration table is in an initial state, the top surface of the first support table (4-1) is lower than the sand box axis (8-1), and the piston rod of the cylinder (10-1) is higher than the top surface of the first support table (4-1); when the three-dimensional vibration table is in a clamped state, the top surfaces of the first support table (4-1), the second support table (4-2) and the third support table (4-3) coincide with the bottom surface of the sand box (8) to be vibrated, and the clamping block (10-3) at the end of the piston rod of the cylinder (10-1) clamps the side walls of the sand box (8) to be vibrated.

2. The lost foam sand box three-dimensional vibration table according to claim 1, characterized in that: A protective cover (10-4) is provided on the top surface of the cylinder support seat (10-2-1), and the cylinder (10-1) is arranged inside the protective cover (10-4).

3. The lost foam sand box three-dimensional vibration table according to claim 1, characterized in that: Four groups of the clamping devices (10) are provided, and two groups of the clamping devices (10) are evenly distributed on both sides of the vibration table (4) in the width direction.

4. The lost foam sand box three-dimensional vibration table according to claim 1, characterized in that: A buffer silicone sleeve is arranged outside the clamping block (10-3).

5. The lost foam sand box three-dimensional vibration table according to claim 1, characterized in that: A guide sleeve (3-1) is vertically arranged in the air spring (3); the guide sleeve (3-1) is sleeved on the upper part of the pillar (2); the top surface of the guide sleeve (3-1) is fixed to the top surface of the air spring (3); and the guide sleeve (3-1) slides up and down along the pillar (2) under the deformation action of the air spring (3).

6. The lost foam sand box three-dimensional vibration table according to claim 1, characterized in that: The air pipe (7) is provided with a solenoid valve (7-1), and the solenoid valve (7-1) is electrically connected to a control system.

7. The lost foam sand box three-dimensional vibration table according to claim 1, characterized in that: A proximity switch (9-1) and a warning light (9-2) are provided on the sand box running track (9) at the front side of the three-dimensional vibration compaction table, and the proximity switch (9-1) and the warning light (9-2) are electrically connected to the control system.

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