Single-time multi-stroke energy-gathered grain pressing die

Abstract

The utility model discloses a single-time multi-stroke energy-gathered grain pressing die. A lower end pressing assembly is arranged at the lower end of a die body. The medicine surface forming assembly is detachably arranged at the upper end of the mold body and used for guiding solid particle medicine into the mold body. The upper punch is detachably arranged at the upper end of the die body in a sliding mode and matched with the combined lower punch assembly to complete pressing. According to the combined lower punch, the height of the step is increased through the movable step so as to increase the capacity of granular medicine, the height of a medicine column input step is reduced according to the medicine column compression proportion in the medicine column pressing process, and medicine does not need to flow from other parts of a medicine column to be supplemented; the conical concave surface of the grain output end increases the density of the output tail end and reduces the pressing flow amount of the grain medicament in a manner of filling the grain medicament into the conical concave surface and automatically prefabricating and forming, and the step surface of the grain input end increases the density and strength of the grain end surface in a manner of pressing multiple strokes once.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to the processing of lightweight thin plate inclined surface parts. Background Art

[0002] The shaped solid charge is formed by placing solid granular agents into a compression mold. Due to the use of a traditional mold cavity for pouring the charge and a fixed step for the single mold lower punch, the output end of the shaped charge forms a conical convex surface or a flat surface after the granular agents enter the mold.

[0003] The energy-focusing end of a solid charge forms a conical concave surface after compaction; the stepped surface at the energy input end requires additional filling during compaction. Because the solid granules don't flow easily within the mold cavity, the density at both the input and output ends of the charge is low, uneven, and weak, making it susceptible to breakage during production and handling, reducing its efficiency and safety. Utility Model Content

[0004] In view of this, the utility model proposes a single-shot multi-stroke energy-gathering column pressing die.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A single-shot multi-stroke shaped charge pressing die, comprising:

[0007] Phantom;

[0008] A lower end pressing assembly, the lower end pressing assembly being arranged at the lower end of the mold body;

[0009] a medicine surface forming assembly, which is detachably mounted on the upper end of the mold body and is used to guide the solid granular medicine into the mold body;

[0010] The upper punch is detachably slidably arranged on the upper end of the die body and cooperates with the combined lower punch assembly to complete the pressing.

[0011] As a further improvement of the above technical solution:

[0012] Preferably, the bottom surface of the lower pressing assembly is flush with the bottom surface of the mold body.

[0013] Preferably, the lower end pressing assembly includes a lower punch arranged at the lower end of the mold body, a center rod slidably arranged at the center of the lower punch, and a limit pin with one end arranged on the side of the lower punch and the other end located in the limit groove on the side of the center rod.

[0014] Preferably, the center rod includes a sliding rod and a punch, the sliding rod is slidably arranged on the lower punch, the punch is arranged at the upper end of the sliding rod, the upper end of the sliding rod is sleeved with a compression spring, and the compression spring is located between the lower surface of the punch and the upper surface of the lower punch.

[0015] Preferably, a stepped hole is provided at the center of the upper end of the lower punch, and the stepped hole matches the punch and the compression spring respectively.

[0016] Preferably, the number of the limiting pins is two.

[0017] Preferably, the medicine surface forming assembly includes a medicine surface forming hopper arranged at the upper end of the mold body through a step surface, an upper hopper arranged at the upper end of the medicine surface forming hopper, a push rod arranged at the center position inside the medicine surface forming hopper, and a diverter cover arranged at the upper end of the push rod, and the upper end of the diverter cover is coaxial with the discharge port of the upper hopper.

[0018] Compared with the existing technology, the beneficial effects of the utility model are:

[0019] The combined down-punch of the utility model utilizes movable steps to increase the step height to increase the capacity of the granular medicine. During the medicine column pressing process, the medicine column input step height is reduced according to the medicine column compression ratio. There is no need to flow in the medicine from other parts of the medicine column to replenish the medicine. The conical concave surface at the output end of the medicine column adopts the method of automatically prefabricating the granular medicine into the output to increase the output end density and reduce the granular medicine pressing flow rate.

[0020] During the pressing process of the medicine column, the conical surface of the upper punch of the mold fits with the conical surface of the granular medicine, and a medicine column output end face with uniform density can be formed without the granular medicine having a large flow deformation. The step surface at the input end of the medicine column adopts a one-time pressing and multiple-stroke method to increase the density and strength of the medicine column end face. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the cross-sectional structure of the charging process of the utility model;

[0022] Figure 2 This is a schematic diagram of the three-dimensional structure of the medicine surface forming hopper of the present utility model;

[0023] Figure 3 This is a schematic diagram of the cross-sectional structure of the medicine pressing process of the present invention.

[0024] In the figure: 1. Upper hopper; 2. Surface forming hopper; 3. Diverter hood; 4. Ejector rod; 5. Mould; 6. Energy-gathering solid charge column; 7. Center rod; 8. Compression spring; 9. Limit pin; 10. Lower punch. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0026] In the description of this utility model, unless otherwise specified, "plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction, and therefore should not be construed as limiting this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0028] This technical solution mainly includes four parts: one is the die body 5, the second is the lower punch 10 and related parts, the third is the powder forming hopper 2 and related parts, and the fourth is the upper punch;

[0029] As attached Figure 1 With attached Figure 2 As shown, the usage of the first, second and third parts of the above four parts in this technical solution is in the feeding state, and its specific structure is described as follows:

[0030] At the upper end of the mold body 5, the bottom step surface of the medicine powder molding hopper 2 is coaxially connected to the top end face of the mold body 5. In order to use a fixed connection, a socket method is required. The upper hopper 1 is connected to the top internal thread of the medicine powder molding hopper 2 through the external thread of the step surface, and the bottom surface of the step surface of the upper hopper 1 is in contact with the top surface of the medicine powder molding hopper 2.

[0031] The top rod 4 is connected to the central internal thread of the cross bracket at the bottom of the medicine powder forming hopper 2 through the bottom external thread, and the bottom end surfaces of the two parts are flush; the top of the top rod 4 is connected to the bottom of the central blind hole inside the diverter cover 3.

[0032] The annular surface at the bottom of the medicine flour forming hopper 2 is in contact with the top surface of the mold body 5 , and the medicine flour forming hopper 2 and the mold body 5 are coaxial.

[0033] At the lower end of the mold body 5, the lower punch 10 is located at the center of the bottom of the mold body 5, and its bottom surface is flush with the bottom surface of the mold body 5;

[0034] The center rod 7 is located at the center of the top of the lower punch 10, coaxial with the lower punch 10, and slidingly arranged in the lower punch 10. At the same time, it can be seen from the figure that a stepped hole is provided at the top of the lower punch 10. The large hole at the upper end corresponds to the punch of the center rod 7, and the smaller hole at the lower end corresponds to the compression spring 8 sleeved on the outside of the sliding rod of the center rod 7. The top of the compression spring 8 fits with the lower end of the punch, and the lower end fits with the stepped hole in the lower punch 10. At the same time, it can be seen from the accompanying drawings that the outer edge of the center rod 7 is smaller than the outer edge of the lower punch 10, so there is a gap.

[0035] In the middle of the lower punch 10, two limit pins 9 are screwed into the threaded holes on the cylindrical side of the lower punch 10 through external threads. The cylindrical side is tangent to the inner hole of the cylindrical side at the lower end of the center rod 7, limiting the center rod 7 from moving upward under the push of the compression spring 8.

[0036] Thus, the distance between the center rod 7 and the top surface of the lower punch 10 formed by the compression spring 8 and the limit pin 9 is greater than the height of the step surface of the energy-gathering solid charge column 6.

[0037] Feeding process: The solid granular medicine passes through the feeding hopper 1, the medicine surface forming hopper 2, and the diverter cover 3 supported by the top rod 4 in the mold cavity of the mold body 5 in sequence, and forms a conical surface similar to the upper end surface of the energy-gathering solid medicine column 6 under the action of the lower punch 10 and the center rod 7.

[0038] As attached Figure 3 As shown, the usage of the first, second and fourth parts of the above four parts in this technical solution is in a pressed state. The specific structure is described as follows:

[0039] Compared with the feeding state, the third part of the powder forming hopper 2 and related parts are disassembled in the pressing state, and the upper punch slides in from the upper end of the mold body 5. At the same time, it can be seen from the figure that the conical convex surface of the lower end of the upper punch fits with the conical concave surface of the energy-gathering column, and the top surface of the lower punch 10 and the top surface of the center rod 7 fit with the input end face of the energy-gathering column.

[0040] Stamping process: During the upper punch extrusion process, the conical surface of the upper punch of the mold fits the conical surface of the granular medicine, and the solid granular medicine column filled between the center rod 7, the lower punch 10 and the cavity of the mold body 5 is gradually compressed to the height of the solid medicine column step surface. Because of the presence of the compression spring 8, the effect of multiple stroke pressing can be achieved in one punch.

[0041] The above are only preferred specific implementation methods of the present invention, but the protection scope of the present invention is not limited to them. Any technician familiar with the technical field can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention within the technical scope disclosed by the present invention, and they should be covered by the protection scope of the present invention.

Claims

1. A single-shot multi-stroke shaped charge pressing die, characterized in that: include: Motif (5); A lower end pressing assembly, the lower end pressing assembly being arranged at the lower end of the mold body (5); a medicine surface forming assembly, the medicine surface forming assembly being detachably arranged on the upper end of the mold body (5) and being used for guiding the solid granular medicine into the mold body (5); The upper punch is detachably slidably arranged at the upper end of the die body (5) and cooperates with the combined lower punch (10) component to complete the pressing.

2. The single-shot multi-stroke shaped charge pressing die according to claim 1, characterized in that: The bottom surface of the lower end pressing component is flush with the bottom surface of the mold body (5).

3. The single-shot multi-stroke shaped charge pressing die according to claim 2, characterized in that: The lower end pressing assembly comprises a lower punch (10) arranged at the lower end of the mold body (5), a center rod (7) slidably arranged at the center of the lower punch (10), and a limiting pin (9) with one end arranged on the side of the lower punch (10) and the other end located in a limiting groove on the side of the center rod (7).

4. The single-shot multi-stroke shaped charge pressing die according to claim 3, characterized in that: The center rod (7) includes a sliding rod and a punch, the sliding rod is slidably arranged on the lower punch (10), the punch is arranged on the upper end of the sliding rod, and the upper end of the sliding rod is sleeved with a compression spring (8), and the compression spring (8) is located between the lower surface of the punch and the upper surface of the lower punch (10).

5. The single-shot multi-stroke shaped charge pressing die according to claim 4, characterized in that: A stepped hole is provided at the center of the upper end of the lower punch (10), and the stepped hole matches the punch and the compression spring (8) respectively.

6. The single-shot multi-stroke shaped charge pressing die according to claim 3, characterized in that: The number of the limiting pins (9) is two.

7. The single-shot multi-stroke shaped charge pressing die according to claim 1, characterized in that: The medicine surface forming assembly comprises a medicine surface forming hopper (2) arranged at the upper end of the mold body (5) via a step surface, an upper hopper (1) arranged at the upper end of the medicine surface forming hopper (2), a push rod (4) arranged at the center position inside the medicine surface forming hopper (2), and a diverter hood (3) arranged at the upper end of the push rod (4), wherein the upper end of the diverter hood (3) is coaxial with the discharge port of the upper hopper (1).

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