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

Abstract

The invention 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 step height is increased through the movable steps so as to increase the capacity of granular medicine, the height of the medicine column input step is decreased 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 invention relates to the technical field of molds, and in particular to the processing of lightweight thin plate-like inclined surface parts. Background Art

[0002] The energy-gathering solid charge column is formed by placing solid granular medicine into a medicine pressing mold. Due to the use of traditional mold cavity pouring medicine and a fixed step of a single mold down punch, the output end of the energy-gathering column forms a conical convex surface or a flat surface after the granular medicine enters the mold.

[0003] The energy-gathering end of the energy-gathering solid charge forms a conical concave surface after pressing; the step surface of the energy input end needs to be filled with other parts during pressing. Because the solid granular medicine is not easy to flow in the mold cavity, the output and input ends of the charge have low density, unevenness, and low strength, and are easy to break during production and service handling, which reduces the output efficiency and safety of the charge. Summary of the invention

[0004] In view of this, the present invention proposes a single-shot multi-stroke energy-focused charge pressing die.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A single-shot multi-stroke energy-gathering column pressing die, comprising: Model; A lower end pressing assembly, wherein the lower end pressing assembly is arranged at the lower end of the mold body; A medicine surface forming component, which is detachably arranged on the upper end of the mold body and is used to guide the solid granular medicine into the mold body; 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.

[0006] As a further improvement of the above technical solution: Preferably, the bottom surface of the lower pressing assembly is flush with the bottom surface of the mold body.

[0007] 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 a limit groove on the side of the center rod.

[0008] 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.

[0009] 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.

[0010] Preferably, the number of the limiting pins is two.

[0011] 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 hood arranged at the upper end of the push rod, and the upper end of the diverter hood is coaxial with the discharge port of the upper hopper.

[0012] Compared with the prior art, the present invention has the following beneficial effects: The combined down-punch of the present invention utilizes a movable step to increase the step height so as 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 and replenish medicine from other parts of the medicine column. The conical concave surface at the output end of the medicine column adopts the method of automatically prefabricating by pouring granular medicine into the output end to increase the output end density and reduce the granular medicine pressing flow rate.

[0013] During the process of pressing 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

[0014] Figure 1 It is a schematic diagram of the cross-sectional structure of the charging process of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the medicine surface forming hopper of the present invention; Figure 3 It is a schematic diagram of the cross-sectional structure of the medicine pressing process of the present invention.

[0015] In the figure: 1. upper hopper; 2. powder surface forming hopper; 3. diverter hood; 4. ejector rod; 5. mold body; 6. energy-focused solid powder column; 7. center rod; 8. compression spring; 9. limit pin; 10. lower punch. DETAILED DESCRIPTION

[0016] 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.

[0017] In the description of the present invention, unless otherwise specified, "plurality" means two or more than two; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0018] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0019] 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 medicine surface forming hopper 2 and related parts, and the fourth is the upper punch; As attached Figure 1 With attached Figure 2 As shown, the use 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: At the upper end of the mold body 5, the bottom step surface of the medicine surface molding hopper 2 is coaxially connected to the top end surface of the mold body 5. In order to use a fixed connection, a socket connection method is required. The upper hopper 1 is connected to the top internal thread of the medicine surface 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 surface molding hopper 2.

[0020] The top rod 4 is connected to the central internal thread of the cross bracket at the bottom of the medicine surface 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.

[0021] The annular surface at the bottom of the medicine surface forming hopper 2 fits with the top surface of the mold body 5 , and the medicine surface forming hopper 2 and the mold body 5 are coaxial.

[0022] 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; The center rod 7 is located at the center of the top of the lower punch 10, is coaxial with the lower punch 10, and is slidably arranged in the lower punch 10. At the same time, it can be seen from the figure that a stepped hole is arranged 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 is in contact with the lower end of the punch, and the lower end is in contact with the stepped hole in the lower punch 10. At the same time, it can be seen from the attached figure 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.

[0023] In the middle of the lower punch 10, two limit pins 9 are screwed to the threaded holes on the cylindrical side of the lower punch 10 through external threads, and 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.

[0024] 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.

[0025] Feeding process: The solid granular medicine passes through the feeding hopper 1, the medicine surface forming hopper 2, and the diverter hood 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.

[0026] As attached Figure 3 As shown, the use of the first, second and fourth parts of the above four parts in this technical solution is in a pressed state, and its specific structure is described as follows: Compared with the feeding state, the medicine surface forming hopper 2 and related parts of the third part 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 surface of the energy-gathering column.

[0027] Stamping process: During the upper punch extrusion process, the conical surface of the upper punch of the mold fits with 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 with one punch.

[0028] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A single-shot multi-stroke shaped charge pressing die, It is 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 component, the medicine surface forming component is detachably arranged on the upper end of the mold body (5) and is used to guide the solid granular medicine into the mold body (5); An upper punch is detachably slidably arranged at the upper end of the mold body (5) and cooperates with the combined lower punch (10) component to complete the pressing.

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

3. The single-shot multi-stroke energy-gathering column pressing die according to claim 2, It is 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 limit pin (9) having one end arranged on the side of the lower punch (10) and the other end located in a limit groove on the side of the center rod (7).

4. The single-shot multi-stroke energy-gathering column pressing die according to claim 3, It is characterized in that The center rod (7) comprises a sliding rod and a punch, wherein the sliding rod is slidably arranged on the lower punch (10), the punch is arranged at the upper end of the sliding rod, and a compression spring (8) is sleeved on the upper end of the sliding rod, wherein 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 energy-gathering column pressing die according to claim 4, It is 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 energy-gathering column pressing die according to claim 3, It is characterized in that The number of the limiting pins (9) is two.

7. The single-shot multi-stroke energy-focused charge pressing die according to claim 1, It is 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 flow divider (3) arranged at the upper end of the push rod (4), wherein the upper end of the flow divider (3) is coaxial with the discharge port of the upper hopper (1).

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