Quantitative weighing and feeding device

Abstract

The utility model relates to a quantitative weighing and feeding device which comprises an installation frame, an upper installation flange is arranged on the upper portion of the installation frame, a material closing gate valve, a control gate valve and a storage hopper are sequentially installed on the upper portion of the upper installation flange from bottom to top, and the control gate valve and the material closing gate valve are arranged in an up-down stacked mode. A weighing hopper cover is connected to a lower end opening of the upper mounting flange, a weighing hopper is mounted on the lower portion of the mounting frame through a weighing sensor suspension support, the weighing hopper cover is arranged on the upper portion of the weighing hopper in a sleeving mode, and a material closing valve is arranged at a discharging opening in the lower end of the weighing hopper. And a temporary storage hopper is mounted at the bottom of the mounting frame and below the weighing hopper. Raw materials with the preset mass are weighed quantitatively, and it is guaranteed that the raw materials with the same mass are provided for each mold, so that product defects are effectively improved, defective products are reduced, the utilization rate of the raw materials is improved, and meanwhile product quality and production stability are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of die-casting supporting equipment, in particular to a quantitative weighing and feeding device. Background Art

[0002] In recent years, the demand for lightweight materials has been increasing. As a structural material, magnesium alloys are widely used in the automotive, electronics, communications and other industries due to their advantages of low specific gravity, high specific strength and specific stiffness, good thermal and electrical conductivity, good machinability, excellent damping and electromagnetic shielding, easy processing and recycling, etc., and are known as the "green engineering materials of the 21st century". At present, die casting is the most important and widely used forming process for magnesium alloys. Magnesium alloys have excellent die casting process performance: magnesium alloy liquid has low viscosity, good fluidity, and is easy to fill complex cavities. Magnesium alloys can easily produce die castings with a wall thickness of 1.0mm to 2.0mm, and the minimum wall thickness can now reach 0.6mm.

[0003] In recent years, the application of magnesium alloys has increased year by year, but there are still many product defects in the die-casting production process that need to be solved or improved. Common product defects are undercasting (lack of material), cold shut (cold lines), sand holes, blistering, shrinkage, deformation, etc. Among them, cold shut and undercasting are the most common types of defects.

[0004] The occurrence of these two defects is mostly related to the following reasons. For example, it may be that the mold filling speed is too slow, too much release agent is sprayed, the melt and mold temperature are incorrect, the melt quality of each mold is unstable, the melt is not clean (too much oxide accumulation), the die casting speed is insufficient, etc. Therefore, in order to solve the problem of how to stably provide magnesium alloy, it is very necessary to design a quantitative weighing feeding device. Summary of the invention

[0005] The technical problem to be solved by the utility model is to provide a quantitative weighing feeding device, which quantitatively weighs raw materials of preset mass to ensure that equal mass of raw materials are provided for each mold, thereby effectively improving product defects, reducing defective products, and improving the utilization rate of raw materials, while ensuring product quality and production stability.

[0006] The technical solution adopted by the utility model to solve its technical problems is: to provide a quantitative weighing feeding device, including a mounting frame, the mounting frame is provided with an upper mounting flange, the upper part of the upper mounting flange is sequentially installed with a material gate valve, a control gate valve and a storage hopper from bottom to top, the control gate valve and the material closing gate valve are stacked up and down, the material closing gate valve includes a material closing gate base, a material closing gate slidably mounted on the material closing gate base, and a material closing gate cylinder driving the material closing gate, the material closing gate is provided with a discharge through hole, the control gate valve includes a control gate base, a material closing gate slidably mounted on the control gate A control gate plate on the plate base and a control gate plate cylinder driving the control gate plate, the control gate plate is provided with two discharge holes or discharge hole groups with different flow rates, one discharge hole or discharge hole group is used for corresponding large flow discharge, and the other discharge hole or discharge hole group is used for corresponding small flow discharge, a weighing hopper cover is connected to the lower port of the upper mounting flange, a weighing hopper is installed on the lower part of the mounting frame through a weighing sensor, the weighing hopper cover is sleeved on the upper part of the weighing hopper, a relevant material valve is arranged at the discharge port at the lower end of the weighing hopper, and a temporary storage hopper is installed at the bottom of the mounting frame below the weighing hopper.

[0007] As a supplement to the technical solution described in the utility model, a discharge support is installed on the upper end of the control gate valve, and a storage hopper is installed on the upper end of the discharge support.

[0008] As a supplement to the technical solution of the utility model, the discharge hole group is composed of a plurality of discharge holes with the same aperture, and the shape of the discharge holes is circular, elliptical or regular polygonal.

[0009] As a supplement to the technical solution described in the utility model, a weighing sensor is installed on each of the two sides of the lower part of the mounting frame, and a weighing hopper is suspended and installed between the two weighing sensors.

[0010] As a supplement to the technical solution described in the utility model, a weighing sensor mounting seat is provided on each side of the mounting frame, a weighing sensor mounting frame is installed on both sides of the outer wall of the weighing hopper, the lower end of the weighing sensor is connected to the weighing sensor mounting seat, and the upper end of the weighing sensor is connected to the weighing sensor mounting frame.

[0011] As a supplement to the technical solution described in the utility model, a detachable quick-release pipe is installed at the lower port of the upper mounting flange, and a lower round tube adaptable to a quick-change clamp is welded at the lower port of the upper mounting flange. The lower part of the lower round tube is locked and connected to the quick-release pipe through a quick-change clamp, and an upper round tube adaptable to a quick-change clamp is welded to the middle part of the upper end of the weighing hopper cover. The inner hole of the upper round tube is an upper material through hole that passes through the weighing hopper cover, and the upper part of the upper round tube is locked and connected to the lower end of the quick-release pipe through a quick-change clamp.

[0012] As a supplement to the technical solution described in the utility model, the shut-off valve is composed of a shut-off plate and a shut-off cylinder that controls the flipping of the shut-off plate; a shut-off valve mounting frame is installed on the outer side of the lower discharge port of the weighing hopper, and the shut-off valve is installed on the shut-off valve mounting frame.

[0013] As a supplement to the technical solution described in the utility model, a lower mounting flange corresponding to the upper mounting flange is installed at the lower part of the mounting frame, and the temporary storage bucket is installed at the upper part of the lower mounting flange. A lower material passing hole cooperating with the temporary storage bucket is provided in the middle of the lower mounting flange.

[0014] As a supplement to the technical solution of the utility model, the weighing hopper is a hollow cylinder, and the shape of the cylinder is one of a cylinder, a conical cylinder, a square barrel, a cylinder plus a conical cylinder, and a square barrel plus a frustum. When the closing plate of the closing valve is driven by the cylinder, the lower discharge port can be closed, thereby forming a container for storing materials.

[0015] As a supplement to the technical solution described in the utility model, a controller is installed in the front of the upper part of the mounting frame, and the controller is respectively connected to the shut-off gate valve, the control gate valve, the shut-off valve and the weighing sensor.

[0016] Beneficial effects: The utility model relates to a quantitative weighing and feeding device. After the system receives an external signal allowing feeding in each production cycle, it quantitatively weighs raw materials of a preset mass to ensure that each mold is provided with raw materials of equal mass, thereby effectively improving product defects, reducing defective products, and improving the utilization rate of raw materials, while ensuring product quality and production stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the control gate valve described in the utility model;

[0019] Figure 3 It is a structural schematic diagram of the material closing gate valve described in the utility model;

[0020] Figure 4 It is a structural schematic diagram of the mounting frame described in the utility model;

[0021] Figure 5 It is a structural schematic diagram of the material shut-off valve mounting frame and the weighing sensor mounting frame of the utility model;

[0022] Figure 6 It is a structural schematic diagram of the closing cylinder and the closing plate described in the utility model.

[0023] Illustration: 1. Storage hopper, 2. Discharge support, 3. Control gate valve, 31. Control gate cylinder, 32. Control gate, 33. Control gate base, 4. Shut-off gate valve, 41. Shut-off gate cylinder, 42. Shut-off gate, 43. Shut-off gate base, 5. Quick-release pipe, 6. Weighing hopper cover, 7. Weighing sensor, 8. Weighing hopper, 81. Weighing sensor mounting bracket, 82. Shut-off valve mounting bracket, 9. Shut-off valve, 91. Shut-off cylinder, 92. Shut-off plate, 10. Temporary storage hopper, 11. Mounting bracket, 111. Upper mounting flange, 112. Lower round pipe, 113. Weighing sensor mounting seat, 114. Lower mounting flange, 12. Controller. DETAILED DESCRIPTION

[0024] The present invention is further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the claims attached to this application.

[0025] The embodiment of the utility model relates to a quantitative weighing feeding device, such as Figure 1-6As shown, it includes a mounting frame 11, and an upper mounting flange 111 is arranged on the upper part of the mounting frame 11. The upper part of the upper mounting flange 111 is sequentially installed with a material gate valve 4, a control gate valve 3 and a storage hopper 1 from bottom to top. The control gate valve 3 and the material closing gate valve 4 are stacked up and down. The material closing gate valve 4 includes a material closing gate base 43, a material closing gate 42 slidably mounted on the material closing gate base 43, and a material closing gate cylinder 41 for driving the material closing gate 42. The material closing gate 42 is provided with a discharge through hole. The control gate valve 3 includes a control gate base 33, a control gate 32 slidably mounted on the control gate base 33, and a control gate cylinder 31 for driving the control gate 32 The control gate plate 32 is provided with two discharge holes or discharge hole groups with different flow rates, one discharge hole or discharge hole group is used for corresponding large flow discharge, and the other discharge hole or discharge hole group is used for corresponding small flow discharge. The lower port of the upper mounting flange 111 is connected with a weighing hopper cover 6, and a weighing hopper 8 is suspended and installed at the lower part of the mounting frame 11 through a weighing sensor 7. The weighing hopper cover 6 is sleeved on the upper part of the weighing hopper 8, and a material valve 9 is arranged at the discharge port at the lower end of the weighing hopper 8. The bottom of the mounting frame 11 is located below the weighing hopper 8 and a temporary storage hopper 10 is installed. There is no fixed connection between the weighing hopper 8, the weighing hopper cover 6 and the temporary storage hopper 10.

[0026] The material discharge through hole is arranged at a position off-center of the material closing gate 42. The material closing gate 42 can slide in the material closing gate base 43 under the drive of the material closing gate cylinder 41. When it is switched to the state where the material discharge through hole is aligned and connected with the inner hole of the upper mounting flange 111, it is in the material discharge state. When it is switched to the state where there is no hole and no connection, it is in the material closing state.

[0027] The control gate 32 of the control gate valve 3 is extended or retracted into position when driven by the control gate cylinder 31, and the closing gate 42 of the closing gate valve 4 is also extended or retracted into position when driven by the closing gate cylinder 41. The two discharge holes (or discharge hole groups) of the control gate 32 and the discharge state and closing state of the closing gate 42 can be combined into three situations: a large flow discharge state, a small flow discharge state, and a zero flow closing state; the large flow discharge state is that the closing gate 42 is in the discharge state, and the discharge through hole is aligned and connected with the discharge hole (or discharge hole group) corresponding to the large flow discharge; the small flow discharge state is that the closing gate 42 is in the discharge state, and the discharge through hole is aligned and connected with the discharge hole (or discharge hole group) corresponding to the flow discharge; the zero flow closing state is that the closing gate 42 is in the closing state.

[0028] As a preferred solution of the utility model, a discharge support 2 is installed on the upper end of the control gate valve 3, and a storage hopper 1 is installed on the upper end of the discharge support 2; the discharge support 2 is provided to conveniently clean up the residual raw materials in the storage hopper 1 when the production task is stopped, and the hole position of the discharge support 2 is aligned with the hole position at the lower end of the storage hopper 1 and fixed with fasteners.

[0029] As an illustration of the discharge hole and the discharge hole group, the shape of the discharge hole can be a regular circle, an ellipse, a polygon, or an irregular shape; the discharge hole group is composed of a plurality of discharge holes with the same aperture.

[0030] As a preferred solution for the arrangement of the weighing sensors 7, a weighing sensor 7 is installed on each of the two sides of the lower part of the mounting frame 11, and a weighing hopper 8 is suspended between the two weighing sensors 7; in addition to symmetrically arranging two weighing sensors 7, three or four weighing sensors can also be evenly arranged around the weighing hopper 8. As long as the structure is stable, the number of weighing sensors 7 can be increased according to actual needs.

[0031] As an installation instruction for the weighing sensor 7, a weighing sensor mounting seat 113 is provided on each side of the mounting frame 11, a weighing sensor mounting frame 81 is installed on each side of the outer wall of the weighing hopper 8, the lower end of the weighing sensor 7 is connected to the weighing sensor mounting seat 113, and the upper end of the weighing sensor 7 is connected to the weighing sensor mounting frame 81.

[0032] As a preferred solution for connecting the upper mounting flange 111 and the weighing hopper cover 6, a detachable quick-release pipe 5 is installed at the lower port of the upper mounting flange 111, a lower round tube 112 adapted to a quick-change clamp is welded at the lower port of the upper mounting flange 111, the lower portion of the lower round tube 112 is locked and connected to the quick-release pipe 5 through a quick-change clamp, an upper round tube adapted to a quick-change clamp is welded to the middle portion of the upper end of the weighing hopper cover 6, the inner hole of the upper round tube is an upper material hole that passes through the weighing hopper cover, and the upper portion of the upper round tube is locked and connected to the lower end of the quick-release pipe 5 through a quick-change clamp. The upper and lower ends of the quick-release pipe 5 are locked with quick-change clamps to achieve rapid disassembly.

[0033] As a preferred arrangement of the weighing hopper 8, a material closing valve mounting frame 82 is installed outside the lower discharge port of the weighing hopper 8, and the material closing valve 9 is installed on the material closing valve mounting frame 82. The material closing valve 9 is composed of a material closing plate 92 and a material closing cylinder 91 for controlling the turning of the material closing plate 92; the material closing cylinder 91 is fixed on the material closing valve mounting frame 82, and the material closing cylinder 91 and the material closing plate 92 are connected by a connecting rod structure.

[0034] As a structural description of the weighing hopper 8, the weighing hopper 8 is a hollow cylinder, and the shape of the cylinder is one of a cylindrical shape, a conical cylinder shape, a square barrel shape, a cylindrical plus a conical cylinder shape, and a square barrel plus a frustum shape. When the shut-off plate 92 of the shut-off valve 9 is driven by the shut-off cylinder 91, the discharge port at the bottom of the weighing hopper 8 can be closed, so that the weighing hopper 8 forms a container for storing materials.

[0035] As an installation instruction for the temporary storage bucket 10, a lower mounting flange 114 corresponding to the upper mounting flange 111 is installed at the lower part of the mounting frame 11, and the temporary storage bucket 10 is installed at the upper part of the lower mounting flange 114. A lower material passing hole cooperating with the temporary storage bucket 10 is provided in the middle of the lower mounting flange 114.

[0036] A controller 12 is installed in the front of the upper part of the mounting frame 11, and the controller 12 is respectively connected to the shut-off gate valve 4, the control gate valve 3, the shut-off valve 9 and the weighing sensor 7. The system inside the controller 12 will adjust the shut-off gate valve 4, the control gate valve 3 and the shut-off valve 9 in real time according to the feedback of the weighing sensor 7.

[0037] The control method of the quantitative weighing feeding device comprises the following steps: after the quantitative weighing feeding device is started and operated, the device circulates and waits for an external feeding permission signal; when the feeding permission signal is valid, weighing starts, and the system controls the closing valve 9 to close the lower discharge port of the weighing hopper 8, so that the weighing hopper 8 forms a container for storing materials; the closing gate valve 4 is controlled to switch to the discharge state, and the control gate valve 3 is controlled to switch to the large flow discharge state, so that the raw materials pass through the storage hopper 1, the discharge support 2, the control gate valve 3, the closing gate valve 4, the quick-release pipe 5, and the weighing hopper cover 6 in sequence, and then fall into the weighing hopper. The system detects the material discharge amount in real time. When the material discharge amount reaches the mass difference between the feeding mass W1 preset by the customer and the small flow switching mass W2 preset by the system, the gate valve 3 is controlled to switch to the small flow discharge state; the system detects the material discharge amount in real time. When the material discharge amount reaches the feeding mass W1 preset by the customer and the temporary estimated mass W3 for closing the discharge preset by the system, the material closing gate valve 4 is controlled to switch to the zero flow closing state; the material closing valve 9 is controlled to open the lower discharge port of the weighing hopper 8, and the quantitatively weighed raw materials fall into the temporary storage bucket 10 below, completing a cycle process and continuing to the next cycle.

[0038] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0039] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0040] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0041] The above is a detailed introduction to a quantitative weighing and feeding device provided by the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea; at the same time, for general technicians in this field, according to the ideas of the present application, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A quantitative weighing and feeding device, comprising a mounting frame (11), characterized in that: The upper part of the mounting frame (11) is provided with an upper mounting flange (111), and the upper part of the upper mounting flange (111) is sequentially mounted with a material-closing gate valve (4), a control gate valve (3) and a storage hopper (1) from bottom to top. The control gate valve (3) and the material-closing gate valve (4) are stacked up and down. The material-closing gate valve (4) comprises a material-closing gate base (43), a material-closing gate plate (42) slidably mounted on the material-closing gate base (43), and a material-closing gate plate cylinder (41) for driving the material-closing gate plate (42). The material-closing gate plate (42) is provided with a discharge hole. The control gate valve (3) comprises a control gate base (33), a control gate plate (32) slidably mounted on the control gate base (33), and a material-closing gate plate cylinder (41) for driving the material-closing gate plate (42). A control gate cylinder (31) drives a control gate (32), wherein the control gate (32) is provided with two discharge holes or discharge hole groups with different flow rates, one discharge hole or discharge hole group is used for corresponding to a large flow rate discharge, and the other discharge hole or discharge hole group is used for corresponding to a small flow rate discharge, a weighing hopper cover (6) is connected to the lower end of the upper mounting flange (111), a weighing hopper (8) is suspended and installed at the lower part of the mounting frame (11) through a weighing sensor (7), the weighing hopper cover (6) is sleeved on the upper part of the weighing hopper (8), a material valve (9) is provided at the discharge port at the lower end of the weighing hopper (8), and a temporary storage hopper (10) is installed at the bottom of the mounting frame (11) below the weighing hopper (8).

2. A quantitative weighing feeding device according to claim 1, characterized in that: The upper end of the control gate valve (3) is equipped with a discharge support (2), and the upper end of the discharge support (2) is equipped with a storage hopper (1).

3. A quantitative weighing feeding device according to claim 1, characterized in that: The discharge hole group is composed of a plurality of discharge holes with the same aperture.

4. A quantitative weighing feeding device according to claim 1, characterized in that: A weighing sensor (7) is installed on each of the two sides of the lower part of the mounting frame (11), and a weighing hopper (8) is suspended and installed between the two weighing sensors (7).

5. A quantitative weighing feeding device according to claim 4, characterized in that: A weighing sensor mounting seat (113) is provided on each side of the mounting frame (11), a weighing sensor mounting frame (81) is installed on each side of the outer wall of the weighing hopper (8), the lower end of the weighing sensor (7) is connected to the weighing sensor mounting seat (113), and the upper end of the weighing sensor (7) is connected to the weighing sensor mounting frame (81).

6. A quantitative weighing feeding device according to claim 1, characterized in that: A detachable quick-release pipe (5) is installed at the lower end of the upper mounting flange (111), and a lower round tube (112) adaptable to a quick-change clamp is welded to the lower end of the upper mounting flange (111), and the lower part of the lower round tube (112) is locked and connected to the quick-release pipe (5) through a quick-change clamp, and an upper round tube adaptable to a quick-change clamp is welded to the middle part of the upper end of the weighing hopper cover (6), and the inner hole of the upper round tube is an upper material hole that passes through the weighing hopper cover, and the upper part of the upper round tube is locked and connected to the lower end of the quick-release pipe (5) through a quick-change clamp.

7. A quantitative weighing feeding device according to claim 1, characterized in that: The material shut-off valve (9) is composed of a material shut-off plate (92) and a material shut-off cylinder (91) for controlling the turning of the material shut-off plate (92).

8. A quantitative weighing feeding device according to claim 1, characterized in that: A lower mounting flange (114) corresponding to the upper mounting flange (111) is installed at the lower part of the mounting frame (11), and the temporary storage bucket (10) is installed at the upper part of the lower mounting flange (114). A lower material passage hole matching the temporary storage bucket (10) is provided in the middle of the lower mounting flange (114).

9. A quantitative weighing feeding device according to claim 1, characterized in that: The weighing hopper (8) is a hollow cylinder, and the shape of the cylinder is one of a cylindrical shape, a conical cylinder shape, a square barrel shape, a cylindrical plus a conical cylinder shape, and a square barrel plus a frustum shape.

10. A quantitative weighing feeding device according to claim 1, characterized in that: A controller (12) is installed at the front of the upper part of the mounting frame (11), and the controller (12) is respectively connected to the material shut-off gate valve (4), the control gate valve (3), the material shut-off valve (9) and the weighing sensor (7).

Images