A feeding system for a magnesium brick press

Abstract

The present invention belongs to the field of refractory brick forming equipment, and specifically relates to a feeding system of a magnesium brick press, characterized in that it includes a lifting platform, a feeding box, a mobile frame and a driving mechanism, the rear end of the lifting platform is provided with a driving mechanism, the output end of the driving mechanism is connected to the mobile frame via a conveying device, the front end of the mobile frame is connected to the feeding box, and the mobile frame is movably connected to a slideway on the lifting platform. Compared with the prior art, the beneficial effects of the present invention are as follows: 1) It is used in conjunction with the mold table of a magnesium brick press, and the material receiving amount of the feeding box can be accurately controlled by controlling the travel speed of the feeding box. 2) According to the shape of the special-shaped brick, the amount of refractory powder to be added to each grid is calculated. 3) The added amount is kept corresponding to the shape of the brick body, thereby ensuring the uniformity and consistency of the density of the refractory brick, thereby improving the sintering strength of the refractory brick.

Description

Technical Field

[0001] The invention belongs to the field of refractory brick forming equipment, and in particular relates to a feeding system of a magnesium brick press. Background Art

[0002] With the development of hydraulic technology, the refractory brick machine industry has also begun to innovate and apply hydraulic technology to the production and processing of refractory bricks. Since the use of hydraulic refractory brick machines, the production of refractory bricks has become more environmentally friendly. The hydraulic transmission system used in the refractory brick press provides sufficient pressure for the molding of refractory bricks, and the pressure is relatively stable, and there will be no hydraulic shock, which ensures the performance of the hydraulic refractory brick machine. The shape of the refractory bricks or the number of blocks pressed at a time can be achieved by adjusting the mold. The equipment adopts fully automatic PLC programmable control, which is automatically realized from raw material mixing, conveying, laying, pressing and forming, bricking to stacking, with high production efficiency. The emergence of hydraulic brick presses solves the low efficiency of traditional refractory brick machines and transforms the production of refractory bricks from labor-intensive to technology-intensive.

[0003] Special-shaped refractory bricks are a type of refractory bricks with complex shapes. Common special-shaped refractory bricks include knife-shaped bricks, axe bricks, burner bricks, etc. In the production of special-shaped bricks, due to the irregular cross-section of the brick body, it is difficult to control the amount of refractory material added, so it is impossible to accurately ensure the uniformity of the density of each cross-section of the brick body, which ultimately affects the sintering strength of the special-shaped refractory bricks. Therefore, it is necessary to develop a feeding system for a magnesium brick press that can ensure feeding accuracy. Summary of the invention

[0004] The purpose of the present invention is to provide a feeding system for a magnesium brick press, which overcomes the shortcomings of the prior art and is matched with the mold table of the magnesium brick press. By controlling the travel speed of the feeding box, the material receiving amount of the feeding box can be accurately controlled. When the feeding box moves above the mold, the bottom of the feeding box opens, and the refractory material falls vertically into the mold. The filling amount corresponds to the shape of the brick body, thereby ensuring the uniformity of the density of the refractory bricks.

[0005] To achieve the above object, the present invention is implemented through the following technical solutions:

[0006] A feeding system for a magnesium brick press is characterized in that it includes a lifting platform, a feeding box, a mobile frame and a driving mechanism. The rear end of the lifting platform is provided with a driving mechanism, the output end of the driving mechanism is connected to the mobile frame via a conveying device, the front end of the mobile frame is connected to the feeding box, and the mobile frame is movably connected to a slideway on the lifting platform.

[0007] The driving mechanism comprises a servo motor and a reducer, wherein the reducer is a 90-degree rotation angle planetary reducer, and the output shaft is arranged vertically.

[0008] The transmission device is any one of a gear rack pair, a belt transmission pair, and a chain transmission pair.

[0009] The feeding box includes a box body, a flipping mechanism and a bottom sealing plate, the bottom sealing plate is connected to the bottom of the box body through the flipping mechanism, the flipping mechanism includes a bushing, a bearing seat, a reinforcing rod, a rocker shaft, a rocker, a synchronous connecting rod and a driver, the bushing is sleeved on the rocker shaft, the bushing is connected to the inner wall of the box body through a bracket, both ends of the rocker shaft are connected to the box body through the bearing seat, one end of the rocker shaft is extended to the outside of the box body and connected to one end of the rocker, the other end of the rocker is hinged to one end of the synchronous connecting rod, and the other end of the synchronous connecting rod is hinged to the output end of the driver, at least two breaking points are provided on the bushing, the rocker shaft exposed at the breaking point is fixedly connected to one end of the reinforcing rod, and the reinforcing rod is connected to the bottom sealing plate.

[0010] The driver is any one of a manual lever, a cylinder, a hydraulic cylinder or an electric push rod.

[0011] A grid is arranged inside the feeding box, and the grid is formed by connecting a longitudinal connecting plate and a transverse partition plate, so that the internal space of the feeding box is divided into a plurality of uniform narrow grids along its moving direction, and the width of the narrow grid is 30-100 mm.

[0012] The grid and the feeding box are an integrated structure or a separate structure.

[0013] The lifting platform comprises a fixed seat, a sliding seat, an adjusting mechanism and a platform plate. The platform plate is connected to the fixed seat through the sliding seat. A locking piece is arranged between the sliding seat and the fixed seat. The adjusting mechanism is arranged between the platform plate and the ground.

[0014] The adjusting mechanism is any one of a threaded lifting mechanism, a cylinder lifting mechanism, an electric lifting mechanism, and a hydraulic lifting mechanism.

[0015] The upper surface and the lower surface, or the lower surface, of the mobile frame are in contact with the guide wheel, and the guide wheel is arranged on a support fixedly connected to the platform plate. The outer side of the guide wheel has a rim, which can limit the lateral deviation of the mobile frame during movement.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1) It is used in conjunction with the mold table of the magnesium brick press. By controlling the travel speed of the feed box, when the feed box moves above the mold, the bottom of the feed box opens and the refractory material falls vertically into the mold. It has a high degree of automation and the feeding process can be program-controlled. According to the shape of the special-shaped brick, the amount of refractory powder to be added to each grid is calculated, so that the amount of material received by the feed box can be accurately controlled.

[0018] 2) Compared with the traditional filling method, the grid can prevent the flow and collapse of powdered refractory materials in adjacent areas, keep the filling amount corresponding to the shape of the brick body, thereby ensuring the uniformity of the density of the refractory bricks, and further improving the sintering strength and product quality of the refractory bricks. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the use state structure of an embodiment of the present invention;

[0020] Figure 2 Schematic diagram of the structure of the feeding box in the embodiment of the present invention;

[0021] Figure 3 is a schematic diagram of the connection relationship between the bottom sealing plate and the driver in an embodiment of the present invention;

[0022] Figure 4 is a schematic diagram of the structure of a driving mechanism in an embodiment of the present invention;

[0023] Figure 5 is a schematic diagram of a grid structure in an embodiment of the present invention;

[0024] Figure 6 is a schematic diagram of the guide wheel structure in an embodiment of the present invention;

[0025] Figure 7 It is a mass distribution diagram of a special-shaped magnesia brick made by the approximate finite element analysis method of the present invention.

[0026] In the figure: 1-lifting platform; 2-feeding box; 3-moving frame; 4-driving mechanism; 5-conveying device; 6-slide; 7-servo motor; 8-reducer; 9-grid; 10-guide wheel; 11-fixed seat; 12-slide seat; 13-adjusting mechanism; 14-platform plate; 15-locking piece; 16-mold; 17-support; 18-brick pushing plate; 19-magnesia brick profile; 20-refractory powder surface; 21-box; 22-turning mechanism; 23-bottom sealing plate; 51-gear; 52-rack; 91-longitudinal plate; 92-horizontal plate; 93-narrow grid; 101-wheel rim; 221-bushing; 222-rocker shaft; 223-bearing seat; 224-reinforcement rod; 225-rocker; 226-driver; 227-synchronous connecting rod. DETAILED DESCRIPTION

[0027] The following will be combined with the accompanying drawings in the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] See Figure 1-Figure 6 , is a schematic structural diagram of a feeding system embodiment of a magnesium brick press of the present invention, comprising a lifting platform 1, a feeding box 2, a mobile frame 3 and a driving mechanism 4. The rear end of the lifting platform 1 is provided with a driving mechanism 4, the output end of the driving mechanism 4 is connected to the mobile frame 3 via a conveying device 5, the front end of the mobile frame 3 is connected to the feeding box 2, and the mobile frame 3 is movably connected to a slideway 6 on the lifting platform 1. The feeding system is used to receive materials from the outlet of the batching scale, and then move to the mold 16 for feeding. The moving speed of the driving mechanism 4 is controlled by a PLC and adjusted accordingly according to the shape and size of the magnesium brick.

[0029] The driving mechanism 4 includes a servo motor 7 and a reducer 8, wherein the reducer 8 is a 90-degree planetary reducer, and the output shaft of the reducer 8 is vertically arranged. The transmission device 5 is a gear rack pair, wherein the output shaft is connected to a gear 51, and a rack 52 is arranged on the moving frame 3. The transmission device 5 can also select any one of a belt drive pair and a chain drive pair to realize the transmission of force.

[0030] The feeding box 2 includes a box body 21, a flip mechanism 22 and a bottom sealing plate 23. The bottom sealing plate 23 is connected to the bottom of the box body 21 through the flip mechanism 22. The flip mechanism 22 includes a sleeve 221, a rocker shaft 222, a bearing seat 223, a reinforcing rod 224, a rocker 225, a synchronous connecting rod 227 and a driver 226. The sleeve 221 is sleeved on the rocker shaft 222. The sleeve 221 is connected to the inner wall of the box body 21 through a bracket. Both ends of the rocker shaft 222 are connected to the box body 21 through the bearing seat 223. One end of the swing rod shaft 222 is extended to the outside of the box 21 and connected to one end of the swing rod 225, the other end of the swing rod 225 is hinged to one end of the synchronous link 227, the other end of the synchronous link 227 is hinged to the output end of the driver 226, the other end of the synchronous link 227 is connected to the output end of the driver 226, and the sleeve 221 is provided with at least two breaking points, the swing rod shaft 222 exposed at the breaking point is fixedly connected to one end of the reinforcing rod 224, and the reinforcing rod 224 is connected to the bottom sealing plate 23. The reinforcing rod 224 supports the bottom sealing plate 23 to prevent deformation.

[0031] The driver 226 is any one of a pneumatic cylinder, a hydraulic cylinder or an electric push rod, which can be selected according to needs.

[0032] A grid 9 is provided in the feed box 2. The grid 9 is formed by connecting a longitudinal plate 91 and a transverse plate 92, so that the internal space of the feed box 2 is divided into a plurality of uniform narrow grids 93 along its moving direction. The width of the narrow grid 93 is 30-100 mm. The width of the narrow grid 93 is proportional to the average particle size of the refractory powder to reduce the resistance of the partition to the refractory powder and ensure the filling density. In the embodiment, the particle size of the refractory powder is 2-3 mm, and the width is 40 mm. The grid 9 and the feed box 2 can be an integrated structure or a split structure. The integrated structure is suitable for large-scale magnesium brick production, and the split structure is suitable for small-scale magnesium brick production. The width and length of the narrow grid 93 can be changed according to the shape and size of the magnesium brick.

[0033] The lifting platform 1 includes a fixed seat 11, a slide seat 12, an adjustment mechanism 13 and a platform plate 14. The platform plate 14 is connected to the fixed seat 11 through the slide seat 12. A locking member 15 is provided between the slide seat 12 and the fixed seat 11. The adjustment mechanism 13 is provided between the platform plate 14 and the ground. The adjustment mechanism 13 is a threaded lifting mechanism, and any one of a cylinder lifting mechanism and a hydraulic lifting mechanism can also be selected according to needs, and the purpose of the present invention can be achieved.

[0034] The upper and lower surfaces of the mobile frame 3 are in contact with the guide wheel 10. The guide wheel 10 is arranged on a support 17 fixedly connected to the platform plate 14. The outer side of the guide wheel 10 has a rim 101, which can limit the lateral deviation of the mobile frame 3 during movement. At the same time, it also constrains the mobile frame 3 in the upper and lower directions, thereby ensuring the accuracy of the movement control of the feeding box.

[0035] See Figure 7 , is an approximate finite element mass distribution diagram of a special-shaped magnesia brick. For this type of magnesia brick, through fuzzy calculation, a narrow grid and the corresponding magnesia brick contour 19 of the special-shaped brick are approximated by finite element analysis, and the material mass in each narrow grid is obtained. The refractory powder surface 20 has a corresponding relationship with the magnesia brick contour 19. By controlling the moving speed of the feeding system, the corresponding material mass is put into each narrow grid 93. In this way, when the feeding box moves to the top of the mold, the material is unloaded from the bottom of the feeding box into the mold, basically maintaining the mass distribution of the special-shaped brick. Therefore, after being pressed by the brick press, refractory bricks with uniform density can be obtained, thereby improving the sintering strength and product quality of the refractory bricks.

[0036] The above embodiments are only specific examples selected to illustrate the purpose, technical solutions and beneficial effects of the present invention in detail, but should not limit the scope of protection of the invention. All modifications, equivalent substitutions and improvements made without violating the spirit and principles of the present invention should fall within the scope of protection of the present invention.

Claims

1. A feeding system for a magnesium brick press, characterized in that: It includes a lifting platform, a feeding box, a mobile frame and a driving mechanism. The rear end of the lifting platform is provided with a driving mechanism. The output end of the driving mechanism is connected to the mobile frame via a conveying device. The front end of the mobile frame is connected to the feeding box. The mobile frame is movably connected to a slideway on the lifting platform. The driving mechanism includes a servo motor and a reducer, wherein the reducer is a 90-degree angle planetary reducer, and its output shaft is vertically arranged; The transmission device is any one of a gear rack pair, a belt transmission pair, and a chain transmission pair; The feeding box includes a box body, a flipping mechanism and a bottom sealing plate, the bottom sealing plate is connected to the bottom of the box body through the flipping mechanism, the flipping mechanism includes a bushing, a bearing seat, a reinforcing rod, a rocker shaft, a rocker, a synchronous connecting rod and a driver, the bushing is sleeved on the rocker shaft, the bushing is connected to the inner wall of the box body through a bracket, both ends of the rocker shaft are connected to the box body through the bearing seat, one end of the rocker shaft is extended to the outside of the box body and connected to one end of the rocker, the other end of the rocker is hinged to one end of the synchronous connecting rod, and the other end of the synchronous connecting rod is hinged to the output end of the driver, at least two breaking points are provided on the bushing, the rocker shaft exposed at the breaking point is fixedly connected to one end of the reinforcing rod, and the reinforcing rod is connected to the bottom sealing plate.

2. According to the feeding system of the magnesium brick press according to claim 1, it is characterized in that: The driver is any one of a pneumatic cylinder, a hydraulic cylinder or an electric push rod.

3. The feeding system of a magnesium brick press according to claim 1 is characterized in that: A grid is arranged inside the feeding box, which is formed by connecting longitudinal plates and transverse partitions. The grid divides the internal space of the feeding box into a plurality of uniform narrow grids along its moving direction, and the width of the narrow grid is 30-100 mm.

4. The feeding system of a magnesium brick press according to claim 3 is characterized in that: The grid and the feeding box are an integrated structure or a separate structure.

5. The feeding system of a magnesium brick press according to claim 1 is characterized in that: The lifting platform comprises a fixed seat, a sliding seat, an adjusting mechanism and a platform plate. The platform plate is connected to the fixed seat through the sliding seat. A locking piece is arranged between the sliding seat and the fixed seat. The adjusting mechanism is arranged between the platform plate and the ground.

6. The feeding system of a magnesium brick press according to claim 5, characterized in that: The adjusting mechanism is any one of a threaded lifting mechanism, a cylinder lifting mechanism, an electric lifting mechanism, and a hydraulic lifting mechanism.

7. The feeding system of a magnesium brick press according to claim 6, characterized in that: The upper surface and the lower surface, or the lower surface, of the mobile frame are in contact with the guide wheel, and the guide wheel is arranged on a support fixedly connected to the platform plate. The outer side of the guide wheel has a rim, which can limit the lateral deviation of the mobile frame during movement.

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