Energetic material grain pressing structure with center hole

Abstract

The utility model relates to the technical field of stamping equipment, aims to solve the problems that in the prior art, manual weighing, material loading, die filling and die unloading are needed, efficiency is low, production cost is high, batch production is not facilitated, and personnel safety is poor, and provides an energetic material grain pressing structure with a center hole. The stamping frame is provided with a pressing platform and a hydraulic machine; a pressing seat is fixed on the pressing platform and is provided with a lifting device and a core withdrawing device; the lifting device is provided with a screw rod, one end of the screw rod is connected with a first driving motor, the screw rod is sleeved with a liftable die sleeve seat, and the die sleeve seat is provided with a die sleeve; the core withdrawing device is provided with a base coaxial with a die sleeve, a bottom die is arranged at the top end of the base, and the die sleeve is sleeved at the top end of the bottom die in a liftable mode. A telescopic core rod is arranged in the base in the axial direction and penetrates through the base and the bottom die. The utility model has the beneficial effects of high efficiency, low production cost, benefit for batch production, low possibility of hurting personnel, and capability of automatically weighing, loading, filling a die and withdrawing the die.

Description

Technical Field

[0001] The utility model relates to the technical field of stamping equipment, in particular to a pressing structure of an energetic material charge with a central hole. Background Art

[0002] At present, when many powder materials are pressed into columns, most of them are manually weighed and loaded, manually assembled into molds, and manually demolded. Manual loading and pressing are inefficient, have high production costs, and are not conducive to mass production. When it is necessary to press highly dangerous powders, the highly dangerous powders will damage the health of personnel or cause harm to personnel, and safety in the production process cannot be ensured. Utility Model Content

[0003] The utility model aims to provide a structure for compressing a charge of energetic material with a central hole, so as to solve the problems in the prior art of requiring manual weighing and loading, manual mold assembly, and manual mold removal during material compression, resulting in low efficiency, high production costs, being unfavorable for mass production, and easily causing harm to personnel.

[0004] The embodiment of the present utility model is achieved as follows:

[0005] The embodiment of the utility model provides a structure for pressing a charge of energetic material with a central hole, which comprises a stamping frame;

[0006] The stamping frame is provided with a pressing platform, and a hydraulic press is provided on the top of the pressing platform. The hydraulic press is fixedly connected to the top of the stamping frame, and an annular pressing punch is detachably connected to the telescopic rod of the hydraulic press, and the annular pressing punch is close to the pressing platform;

[0007] The pressing platform is provided with a pressing seat, which has a lifting device and a core-retracting device. The lifting device is fixedly connected to the top surface of the pressing platform. One end of the core-retracting device is adapted to the lifting device, and the other end of the core-retracting device passes through the pressing platform and is fixedly connected to the pressing platform.

[0008] The lifting device has a screw rod, one end of which is connected to a first drive motor, a liftable die sleeve seat is provided on the radial direction of the screw rod, and a die sleeve is provided on the axial direction of the die sleeve seat;

[0009] The core-retracting device has a base, which is fixed on the pressing platform. The base and the die sleeve are coaxial with each other. The top of the base is fixedly connected to the bottom die, and the end of the die sleeve close to the bottom die is sleeved on the top of the bottom die.

[0010] A retractable core rod is provided in the axial direction of the interior of the base, and one end of the core rod close to the bottom mold passes through the base and the bottom mold in sequence.

[0011] During use, first, the first driving motor in the lifting device drives the screw to rotate, and the screw drives the die sleeve on the die sleeve seat to descend, and the die sleeve descends and is sleeved on the bottom die of the core-retracting device. At this time, in the core-retracting device, the core rod inside the base moves upward, passes through the base and the bottom die in turn and extends into the die sleeve seat. Secondly, the powder is added into the die sleeve so that the powder is evenly spread inside the die sleeve. Then, the hydraulic press on the stamping frame is started, and the telescopic rod of the hydraulic press drives the annular pressing punch to align with the die sleeve and press the powder along the inner wall of the die sleeve. At this time, the core rod is embedded in the inside of the annular pressing punch, and the powder forms an annular column in the die sleeve. Finally, the hydraulic press carries the annular pressing punch away from the die sleeve, and the first driving motor drives the screw to rotate so that the die sleeve seat rises with the die sleeve, and the screw descends, which is convenient for taking out the annular columnar material on the bottom die.

[0012] The embodiment disclosed a structure for pressing a charge of energetic material with a center hole. Since the structure is provided with the lifting device and the core-retracting device that can be raised and lowered, the mold sleeve of the lifting device is replaced on the bottom mold of the core-retracting device, and the core rod extends into the mold sleeve, so that powder is filled into the mold sleeve, which is convenient for pressing into an annular column. At the same time, it is convenient for automatic reciprocating pressing of powder, thereby making the structure for pressing a charge of energetic material with a center hole have the beneficial effects of automatic weighing and loading, automatic mold loading, automatic mold removal, high efficiency, low production cost, conducive to mass production, and not easy to cause harm to personnel.

[0013] Optionally: the mold sleeve seat has a cantilever plate in the radial direction, the cantilever plate is provided with a through hole, and the end of the mold sleeve close to the bottom mold is embedded in the through hole and limited to the top surface of the cantilever plate.

[0014] Such arrangement makes it easy for the mold sleeve to be limited on the cantilever plate, and then can be lifted and lowered by lifting the mold sleeve seat, making it easy to dock with the bottom mold coaxially, which is beneficial for pressing the material into a columnar shape.

[0015] Optionally: the outer wall of the mold sleeve has a limiting ring in the radial direction, the diameter of the limiting ring is larger than the diameter of the through hole, and a plurality of screws are arranged in the circumferential direction of the limiting ring, and the plurality of screws pass through the limiting ring and are threadedly connected to the cantilever plate.

[0016] With such arrangement, the limiting ring can make the mold sleeve stuck on the cantilever plate, making it convenient for the cantilever plate to lift the mold sleeve. The use of several screws is conducive to the mutual disassembly and assembly of the mold sleeve and the cantilever plate, making it convenient to replace the mold sleeves with different inner diameters according to different needs, thereby expanding the scope of use of the equipment.

[0017] Optionally, a plurality of screws are evenly distributed in the circumferential direction of the top surface of the base, and the base is detachably connected to the pressing platform via the plurality of screws.

[0018] Such arrangement makes it easy to disassemble and assemble the base, so as to facilitate replacement of bases of different models, thereby facilitating pressing of various materials to form various columns, and at the same time, facilitating replacement or maintenance of the core-retracting device.

[0019] Optionally: the top of the above-mentioned base has a circular protrusion, the end of the above-mentioned bottom mold close to the above-mentioned base has an inner concave circular groove, the outer wall of the above-mentioned circular protrusion has an external thread, the groove wall of the above-mentioned inner concave circular groove has an internal thread, and the above-mentioned circular protrusion of the above-mentioned base is threadedly connected to the inner concave circular groove of the above-mentioned bottom mold.

[0020] Such an arrangement enables the base and the bottom mold to be connected to each other as a whole, preventing the bottom mold from shifting during the pressing process. At the same time, it is beneficial to replace the bottom mold with a corresponding size according to the size of the mold sleeve, making it convenient to press a variety of materials to form a variety of columns.

[0021] Optionally, an adapting hole is provided inside the bottom end of the mold sleeve, and an adapting block is provided at the top end of the bottom mold, and the adapting hole can be slidably mounted on the adapting block.

[0022] In this arrangement, the adaptor block serves as a material carrying platform, and the adaptor hole sleeve provided on the adaptor block can prevent the material from overflowing from the mold sleeve.

[0023] Optionally, a through hole is provided on the axis of the bottom mold, the through hole passes through the bottom mold and the adapter block, and the core rod is adapted inside the through hole;

[0024] An annular inner groove is provided on the inner wall of the through hole at the adapter block, an annular sealing ring is embedded in the groove of the annular inner groove, the outer wall of the annular sealing ring presses against the bottom of the annular inner groove, and the inner wall of the annular sealing ring presses against the outer wall of the core rod.

[0025] With such an arrangement, the annular inner groove and the annular sealing ring can prevent the material from falling into the core withdrawing device along the gap between the core rod and the through hole when the core rod is extended and retracted in the through hole, thereby playing a sealing role.

[0026] Optionally: the end of the base away from the bottom mold is fixedly connected to a telescopic cylinder, the tail end of the telescopic cylinder is transmission-connected to a second drive motor, and the outer end of the telescopic rod of the telescopic cylinder passes through the base and is connected to the bottom end of the core rod.

[0027] With such arrangement, the telescopic rod of the telescopic cylinder is driven to move by the second drive motor, thereby enabling the core rod to be telescoped, which is beneficial to the pressing and forming of the annular material column.

[0028] Optionally, a coupling is provided between the core rod and the telescopic rod of the telescopic cylinder, the tail end of the core rod has an enlarged head, the bottom surface of the enlarged head abuts against the coupling, a clamping sleeve is provided on the outer sleeve of the enlarged head and the coupling, one end of the clamping sleeve is clamped on the coupling, and the other end of the clamping sleeve is clamped on the enlarged head;

[0029] The outer end of the telescopic rod of the telescopic cylinder is threadedly connected to one end of the coupling close to the telescopic cylinder.

[0030] With such an arrangement, the core rod and the telescopic rod of the telescopic cylinder are connected by the coupling, which is conducive to adapting to the core rods and telescopic rods of the telescopic cylinder of different diameters. At the same time, the ferrule can connect the core rod and the coupling to avoid falling off. The telescopic rod of the telescopic cylinder is threadedly connected to the coupling to effectively avoid the separation of the telescopic rod of the telescopic cylinder and the coupling, thereby facilitating the telescopic rod of the telescopic cylinder to drive the axial movement of the core rod through the coupling.

[0031] Optionally, the bottom of the stamping frame has a support seat, the support seat is located at the lower part of the pressing platform, and the support seat and the stamping frame are fixedly connected to each other.

[0032] With such arrangement, the support seat provides stable support for the stamping frame and, at the same time, effectively disperses the pressure transmitted by the hydraulic press to the pressing seat and the pressing platform, thereby preventing the stamping frame from sinking into the ground.

[0033] Optionally, an outer shell is provided on the outside of the first drive motor, the first drive motor is suspended inside the outer shell, and the screw rod is located outside the outer shell and extends along the axial direction of the outer shell.

[0034] With such arrangement, the outer shell can protect the first drive motor and, at the same time, facilitate the fixed connection of the lifting device to the pressing platform.

[0035] Based on the above description, the utility model discloses a structure for compressing a charge of energetic material with a central hole, which has the beneficial effects of automatic weighing and loading, automatic mold loading, automatic mold removal, high efficiency, low production cost, being conducive to mass production and not prone to causing harm to personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0037] Figure 1 This is a front view of a compressed structure of an energetic material charge with a central hole in an embodiment of the present utility model;

[0038] Figure 2 This is a cross-sectional view of a compressed structure of an energetic material charge with a central hole in an embodiment of the present utility model;

[0039] Figure 3 This is a front view of the pressing seat in the embodiment of the utility model;

[0040] Figure 4 This is a cross-sectional view of a pressing seat in an embodiment of the present utility model;

[0041] Figure 5 This is a cross-sectional view of a core-retracting device in an embodiment of the present invention;

[0042] Figure 6 For the embodiment of the utility model Figure 5 A in the middle is an enlarged schematic diagram;

[0043] Figure 7 For the embodiment of the utility model Figure 5 Enlarged schematic diagram of point B in the middle.

[0044] Icons: 1-stamping frame, 2-pressing platform, 3-hydraulic press, 4-annular pressing punch, 5-pressing seat, 6-lifting device, 7-core withdrawal device, 8-screw, 9-first drive motor, 10-die sleeve seat, 11-die sleeve, 12-base, 13-bottom die, 14-core rod, 15-cantilever plate, 16-through hole, 17-limiting ring, 18-screw, 19-screw, 20-circular protrusion, 21-concave circular groove, 22-adaptation hole, 23-adaptation block, 24-annular inner groove, 25-annular sealing ring, 26-telescopic cylinder, 27-second drive motor, 28-coupling, 29-enlarging head, 30-ferrule, 31-support seat, 32-outer shell, 33-through hole. DETAILED DESCRIPTION

[0045] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0046] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0047] Example

[0048] See also Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7 , this embodiment proposes a structure for pressing a charge of energetic material with a central hole, comprising a stamping frame 1;

[0049] A pressing platform 2 is provided on the stamping frame 1, and a hydraulic press 3 is provided on the top of the stamping platform 2. The hydraulic press 3 is fixedly connected to the top of the stamping frame 1, and an annular pressing punch 4 is detachably connected to the telescopic rod of the hydraulic press 3. The annular pressing punch 4 is close to the pressing platform 2;

[0050] A pressing seat 5 is provided on the pressing platform 2. The pressing seat 5 has a lifting device 6 and a core-retracting device 7. The lifting device 6 is fixedly connected to the top surface of the pressing platform 2. One end of the core-retracting device 7 is adapted to the lifting device 6. The other end of the core-retracting device 7 passes through the pressing platform 2 and is fixedly connected to the pressing platform 2.

[0051] The lifting device 6 has a screw rod 8, one end of which is connected to a first drive motor 9. A liftable die sleeve 10 is provided radially on the screw rod 8, and a die sleeve 11 is provided axially on the die sleeve 10.

[0052] The core-retracting device 7 has a base 12, which is fixed on the pressing platform 2. The base 12 and the die sleeve 11 are coaxial with each other. The top of the base 12 is fixedly connected to the bottom die 13, and the end of the die sleeve 11 close to the bottom die 13 is sleeved on the top of the bottom die 13.

[0053] A retractable core rod 14 is provided in the axial direction of the interior of the base 12 , and one end of the core rod 14 close to the bottom mold 13 passes through the base 12 and the bottom mold 13 in sequence.

[0054] When in use, first, the first drive motor 9 in the lifting device 6 drives the screw rod 8 to rotate, and the screw rod 8 drives the mold sleeve 11 on the mold sleeve seat 10 to descend, and the mold sleeve 11 descends and is sleeved on the bottom mold 13 of the core-retracting device 7. At this time, in the core-retracting device 7, the core rod 14 inside the base 12 moves upward, passes through the base 12 and the bottom mold 13 in turn and extends into the mold sleeve seat 10. Secondly, the powder is added into the mold sleeve 11 so that the powder is evenly laid inside the mold sleeve 11. Then, the core sleeve 11 is started. The hydraulic press 3 on the dynamic stamping frame 1, the telescopic rod of the hydraulic press 3 drives the annular pressing punch 4 to align with the die sleeve 11 and press the powder along the inner wall of the die sleeve 11. At this time, the core rod 14 is embedded in the inside of the annular pressing punch 4, and the powder forms an annular column in the die sleeve 11. Finally, the hydraulic press 3 drives the annular pressing punch 4 away from the die sleeve 11, and the first drive motor 9 drives the screw 8 to rotate so that the die sleeve seat 10 and the die sleeve 11 rise, and the screw 8 descends, so as to facilitate the removal of the annular columnar material on the bottom die 13.

[0055] The embodiment disclosed a structure for pressing a charge of energetic material with a center hole. Since it is provided with a lifting device 6 and a core-retracting device 7 that can be lifted and lowered, the die sleeve 11 of the lifting device 6 is replaced on the bottom die 13 of the core-retracting device 7, and the core rod 14 extends into the die sleeve 11, so that powder is filled into the die sleeve 11, which is convenient for pressing into an annular column. At the same time, it is convenient for automatic reciprocating pressing of powder, thereby making the structure for pressing a charge of energetic material with a center hole have the beneficial effects of automatic weighing and loading, automatic mold loading, automatic mold removal, high efficiency, low production cost, conducive to mass production, and not easy to cause harm to personnel.

[0056] See also Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7 The die sleeve base 10 has a cantilever plate 15 in the radial direction, and a through hole 3316 is opened on the cantilever plate 15. The end of the die sleeve 11 close to the bottom die 13 is embedded in the through hole 3316 and limited to the top surface of the cantilever plate 15. This makes it easier for the die sleeve 11 to be limited on the cantilever plate 15, and then it can be lifted and lowered by lifting the die sleeve base 10, which is convenient for coaxial docking with the bottom die 13, which is beneficial for pressing the material into a columnar shape.

[0057] The outer wall of the mold sleeve 11 has a limiting ring 17 in the radial direction. The diameter of the limiting ring 17 is larger than the diameter of the through hole 3316. A number of screws 18 are evenly distributed in the circumferential direction of the limiting ring 17. The number of screws 18 all pass through the limiting ring 17 and are threadedly connected to the cantilever plate 15. The limiting ring 17 can make the mold sleeve 11 stuck on the cantilever plate 15, which is convenient for the cantilever plate 15 to lift the mold sleeve 11. The use of a number of screws 18 is conducive to the mutual disassembly and assembly of the mold sleeve 11 and the cantilever plate 15, and it is convenient to replace the mold sleeve 11 with different inner diameters according to different needs, thereby expanding the scope of use of the equipment.

[0058] See also Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7 A plurality of screws 19 are evenly distributed in the circumferential direction of the top surface of the base 12. The base 12 is detachably connected to the pressing platform 2 through the plurality of screws 19. This makes it easy to disassemble and assemble the base 12, so as to facilitate the replacement of bases 12 of different models, and thus facilitate the pressing of various materials to form various columns. At the same time, it is convenient to replace or repair the core-retracting device 7.

[0059] The top of the base 12 has a circular protrusion 20, and the end of the bottom mold 13 close to the base 12 has an inner concave circular groove 21. The outer wall of the circular protrusion 20 has an external thread (not shown in the figure), and the groove wall of the inner concave circular groove 21 has an internal thread (not shown in the figure). The circular protrusion 20 of the base 12 is threadedly connected to the inner concave circular groove 21 of the bottom mold 13, so that the base 12 and the bottom mold 13 are connected to each other as a whole, avoiding the displacement of the bottom mold 13 during the pressing process. At the same time, it is beneficial to replace the bottom mold 13 of the corresponding size according to the size of the mold sleeve 11, so as to facilitate the pressing of various materials to form various columns.

[0060] The bottom end of the mold sleeve 11 has an adapter hole 22, and the top end of the bottom mold 13 has an adapter block 23. The adapter hole 22 can be slidably mounted on the adapter block 23. The adapter block 23 serves as a material carrying platform. The adapter hole 22 is mounted on the adapter block 23 to prevent the material from overflowing the mold sleeve 11.

[0061] In this embodiment, the outer wall of the adapter block 23 and the inside of the adapter hole 22 are matched with each other with a minimum clearance. The minimum clearance fit here neither affects the adapter block 23 from being embedded in the adapter hole 22 or the adapter block 23 from being separated from the adapter hole 22, nor does it cause the material added to the top of the adapter block 23 to overflow along the gap between the adapter block 23 and the adapter hole 22.

[0062] There is a through hole 33 on the axis of the bottom mold 13, which passes through the bottom mold 13 and the adapter block 23, and the core rod 14 is adapted inside the through hole 33; an annular inner groove 24 is provided on the inner wall of the through hole 33 at the adapter block 23, and an annular sealing ring 25 is embedded in the groove of the annular inner groove 24, and the outer wall of the annular sealing ring 25 is pressed against the bottom of the annular inner groove 24, and the inner wall of the annular sealing ring 25 is pressed against the outer wall of the core rod 14. The setting of the annular inner groove 24 and the annular sealing ring 25 can prevent the material from falling into the core withdrawal device 7 along the gap between the core rod 14 and the through hole 33 when the core rod 14 is extended and retracted in the through hole 33, thereby playing a sealing role.

[0063] See also Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7 The end of the base 12 away from the bottom mold 13 is fixedly connected to a telescopic cylinder 26, and the tail end of the telescopic cylinder 26 is transmission-connected to a second drive motor 27. The outer end of the telescopic rod of the telescopic cylinder 26 passes through the base 12 and is connected to the bottom end of the core rod 14. The telescopic rod of the telescopic cylinder 26 is driven by the second drive motor 27 to move, thereby enabling the core rod 14 to be telescoped, which is beneficial to the pressing and forming of the annular material column.

[0064] A coupling 28 is provided between the core rod 14 and the telescopic rod of the telescopic cylinder 26. The tail end of the core rod 14 has an enlarged head 29. The bottom surface of the enlarged head 29 abuts against the coupling 28. A clamping sleeve 30 is provided on the outer sleeve of the enlarged head 29 and the coupling 28. One end of the clamping sleeve 30 is snapped on the coupling 28, and the other end of the clamping sleeve 30 is snapped on the enlarged head 29. The outer end of the telescopic rod of the telescopic cylinder 26 is threadedly connected to the end of the coupling 28 close to the telescopic cylinder 26. The core rod 14 and the telescopic rod are connected. The telescopic rods of the telescopic cylinder 26 are connected by a coupling 28, which is conducive to adapting to the core rod 14 and the telescopic rod of the telescopic cylinder 26 of different diameters. At the same time, the ferrule 30 can connect the core rod 14 with the coupling 28 to prevent it from falling off. The telescopic rod of the telescopic cylinder 26 is threadedly connected to the coupling 28, which effectively prevents the telescopic rod of the telescopic cylinder 26 from being separated from the coupling 28, thereby facilitating the telescopic rod of the telescopic cylinder 26 to drive the core rod 14 to move axially through the coupling 28.

[0065] The bottom of the stamping frame 1 is provided with a support base 31, which is located at the lower part of the pressing platform 2. The support base 31 and the stamping frame 1 are fixedly connected to each other. The support base 31 provides stable support for the stamping frame 1. At the same time, it effectively disperses the pressure transmitted from the hydraulic press 3 to the pressing seat 5 and the pressing platform 2, thereby preventing the stamping frame 1 from sinking into the ground.

[0066] An outer shell 32 is provided on the outside of the first drive motor 9, and the first drive motor 9 is suspended inside the outer shell 32. The screw rod 8 is located on the outside of the outer shell 32 and extends along the axial direction of the outer shell 32. The outer shell 32 can protect the first drive motor 9 and at the same time facilitate the lifting device 6 to be fixedly connected to the pressing platform 2.

[0067] See also Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7 In this embodiment, the annular pressing punch 4 cooperates with the core rod 14, so that after the annular pressing punch 4 is pressed into the interior of the die sleeve 11, it is beneficial for the powder inside the die sleeve 11 to form an annular columnar material.

[0068] See also Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7 In this embodiment, since the adapting hole 22 of the mold sleeve 11 and the adapting block 23 of the bottom mold 13 are adapted to each other, a chamber for accommodating powder is formed inside the bottom end of the mold sleeve 11. The core rod 14 is raised and lowered by the second drive motor 27 driving the telescopic cylinder 26. The telescopic cylinder 26 drives the core rod 14 to rise and fall through the coupling 28. When the core rod 14 extends into the interior of the mold sleeve 11, the powder pressed inside the mold sleeve 11 will form an annular column. When the core rod 14 retracts, the annular column on the bottom mold 13 is easy to remove.

[0069] In this embodiment, the stamping of the hydraulic press 3 can be controlled by adopting a control device, which facilitates the control of the start and stop of the first drive motor 9 and the second drive motor 27, thereby achieving the purpose of automatic feeding and automatic pressing and forming, greatly improving production efficiency.

[0070] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A structure for compressing an energetic charge with a central hole, characterized by: It includes a stamping frame (1); A pressing platform (2) is provided on the pressing frame (1), a hydraulic press (3) is provided on the top of the pressing platform (2), the hydraulic press (3) is fixedly connected to the top of the pressing frame (1), and an annular pressing punch (4) is detachably connected to the telescopic rod of the hydraulic press (3), and the annular pressing punch (4) is close to the pressing platform (2); A pressing seat (5) is provided on the pressing platform (2), and the pressing seat (5) has a lifting device (6) and a core-retracting device (7). The lifting device (6) is fixedly connected to the top surface of the pressing platform (2), one end of the core-retracting device (7) is adapted to the lifting device (6), and the other end of the core-retracting device (7) passes through the pressing platform (2) and is fixedly connected to the pressing platform (2); The lifting device (6) has a screw rod (8), one end of which is transmission-connected to a first drive motor (9), a liftable die sleeve seat (10) is provided radially on the screw rod (8), and a die sleeve (11) is provided axially on the die sleeve seat (10); The core-retracting device (7) has a base (12), the base (12) is fixed on the pressing platform (2), the base (12) and the die sleeve (11) are coaxial with each other, the top end of the base (12) is fixedly connected to the bottom die (13), and the end of the die sleeve (11) close to the bottom die (13) is sleeved on the top end of the bottom die (13); The base (12) has a retractable core rod (14) in the axial direction inside, and one end of the core rod (14) close to the bottom mold (13) passes through the base (12) and the bottom mold (13) in sequence.

2. The energetic material charge pressing structure with a central hole according to claim 1, characterized in that: The mold sleeve seat (10) has a cantilever plate (15) in the radial direction, and a through hole (33) (16) is opened on the cantilever plate (15). The end of the mold sleeve (11) close to the bottom mold (13) is embedded in the through hole (33) (16) and is limited to the top surface of the cantilever plate (15).

3. The energetic material charge pressing structure with a central hole according to claim 2, characterized in that: The outer wall of the mold sleeve (11) has a limiting ring (17) in the radial direction, the diameter of the limiting ring (17) is larger than the diameter of the through hole (33) (16), and a plurality of screws (18) are evenly distributed in the circumferential direction of the limiting ring (17), and the plurality of screws (18) all pass through the limiting ring (17) and are threadedly connected to the cantilever plate (15).

4. The energetic material charge pressing structure with a central hole according to claim 1, characterized in that: A plurality of screw rods (19) are evenly distributed in the circumferential direction of the top surface of the base (12), and the base (12) is detachably connected to the pressing platform (2) via the plurality of screw rods (19).

5. The energetic material charge pressing structure with a central hole according to claim 1, characterized in that: The top of the base (12) has a circular protrusion (20), and the end of the bottom mold (13) close to the base (12) has an inner concave circular groove (21). The outer wall of the circular protrusion (20) has an external thread, and the groove wall of the inner concave circular groove (21) has an internal thread. The circular protrusion (20) of the base (12) is threadedly connected to the inner concave circular groove (21) of the bottom mold (13).

6. The energetic material charge pressing structure with a central hole according to claim 1, characterized in that: The bottom end of the mold sleeve (11) is provided with an adapting hole (22), the top end of the bottom mold (13) is provided with an adapting block (23), and the adapting hole (22) is slidably mounted on the adapting block (23).

7. The energetic material charge pressing structure with a central hole according to claim 6, characterized in that: The bottom mold (13) has a through hole (33) on its axis, the through hole (33) passes through the bottom mold (13) and the adapter block (23), and the core rod (14) is adapted inside the through hole (33); An annular inner groove (24) is provided on the inner wall of the through hole (33) at the adapter block (23), an annular sealing ring (25) is embedded in the groove of the annular inner groove (24), the outer wall of the annular sealing ring (25) abuts against the bottom of the groove of the annular inner groove (24), and the inner wall of the annular sealing ring (25) abuts against the outer wall of the core rod (14).

8. The energetic material charge pressing structure with a central hole according to claim 1, characterized in that: One end of the base (12) away from the bottom mold (13) is fixedly connected to a telescopic cylinder (26), the tail end of the telescopic cylinder (26) is transmission-connected to a second drive motor (27), and the outer end of the telescopic rod of the telescopic cylinder (26) passes through the base (12) and is connected to the bottom end of the core rod (14).

9. The energetic material charge pressing structure with a central hole according to claim 8, characterized in that: A coupling (28) is provided between the core rod (14) and the telescopic rod of the telescopic cylinder (26); the tail end of the core rod (14) is provided with an enlarged head (29); the bottom surface of the enlarged head (29) abuts against the coupling (28); a clamping sleeve (30) is provided on the outer sleeve of the enlarged head (29) and the coupling (28); one end of the clamping sleeve (30) is clamped on the coupling (28), and the other end of the clamping sleeve (30) is clamped on the enlarged head (29); The outer end of the telescopic rod of the telescopic cylinder (26) is threadedly connected to one end of the coupling (28) close to the telescopic cylinder (26).

10. The energetic material charge pressing structure with a central hole according to claim 1, characterized in that: The bottom of the punching frame (1) is provided with a support seat (31), the support seat (31) is located at the lower part of the pressing platform (2), and the support seat (31) and the punching frame (1) are fixedly connected to each other.

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