Explosive pressing device suitable for casting type grain draft process

Abstract

The invention provides an explosive pressing device suitable for a casting type explosive column draft process. The explosive pressing device comprises a rack, the vertical top of the rack is provided with the fixed end of an explosive pressing plate driving air cylinder in the longitudinal direction, the telescopic end of the explosive pressing plate driving air cylinder is connected with an air cylinder moving block, the vertical top of the air cylinder moving block is provided with an explosive pressing plate, and the explosive pressing plate is horizontally arranged. The medicine pressing plate comprises a flat-plate-shaped medicine pressing plate body arranged in the longitudinal direction, a vertically-through mold core penetrating opening is formed in the longitudinal front end of the medicine pressing plate body, the longitudinal front end of the mold core penetrating opening is open, and medicine column contact acting plates are arranged on the transverse left side and the transverse right side of the mold core penetrating opening in the medicine pressing plate body. And the grain contact action plate can vertically press the grain downwards in the grain drawing process. The mold core penetrating opening can enable the mold core to penetrate upwards in the vertical direction in the grain mold pulling process. When the device is used for upwards pulling the mold core, the explosive pressing plate provides stable downward pressure for the explosive column, the explosive column is effectively prevented from being brought out by the mold core, and the quality of the explosive column and the production continuity are guaranteed.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of energetic material forming, and relates to a propellant grain demolding, in particular to a propellant pressing device suitable for the demolding process of a cast propellant grain. BACKGROUND

[0002] The cast solid propellant has the significant advantage of high energy density, and can be processed into complex structures such as star holes, through holes and multi-stage charges, precisely meeting the needs of rockets and missiles for complex charging forms. In order to manufacture solid propellants with different complex structures, it is inevitable to use a mold core for the casting and curing of the solid propellant during the production process. However, when the propellant is cast and cured, the core demolding process faces the core sticking problem of the propellant grain - due to the inherent stickiness of the material, the residual pressure during the forming process and the micro-surface adsorption effect of the mold core, the phenomenon of the propellant grain being taken out by the mold core is common. This problem is particularly prominent in the production of high-viscosity and high-strength propellant grains. This not only causes geometric size deviation and internal structure damage of the propellant grain, but also may cause safety hazards due to uneven stress of the material, seriously restricting large-scale production.

[0003] In order to solve the problem of propellant grain demolding, the current common method is manual pressing, which not only requires the operator to have rich experience and precise force control, but also is prone to fatigue due to long-term repetitive labor, and has problems such as uneven pressing force and position deviation, resulting in poor pressing effect and low production efficiency.

[0004] In addition, from the perspective of industry development, as the requirements for product consistency and safety continue to improve, the production mode of manual intervention has been difficult to meet the modern quality control standards. The manual pressing propellant grain anti-taking-out method not only has low efficiency, but also has problems such as large force fluctuation and poor operation standardization, and there is a safety risk due to misoperation. The existing mechanical pressing device is mostly a general-purpose equipment modified from an existing device, and the redundant structure leads to difficult debugging and insufficient control accuracy, lacks special design for the material characteristics of the propellant grain, and cannot adapt to the production needs of propellant grains of different formulations and different sizes. SUMMARY

[0005] In view of the deficiencies in the prior art, the purpose of the present application is to provide a propellant pressing device suitable for the demolding process of a cast propellant grain, which solves the technical problem that the reliability of the propellant grain demolding in the prior art and the reduction of the labor intensity of the operator cannot be achieved at the same time.

[0006] In order to solve the above technical problems, the present application adopts the following technical solutions: The application discloses a pressing device suitable for the ejection process of a cast propellant grain, which comprises a frame, a fixed end of a propellant pressing plate driving cylinder is longitudinally arranged on the vertical top of the frame, the telescopic end of the propellant pressing plate driving cylinder is connected with a cylinder moving block, a propellant pressing plate is arranged on the vertical top of the cylinder moving block, the propellant pressing plate is horizontally arranged, and the propellant pressing plate driving cylinder drives the propellant pressing plate to move forward and backward along the longitudinal direction through the cylinder moving block.

[0007] The propellant pressing plate comprises a flat plate-shaped propellant pressing plate body arranged along the longitudinal direction, a vertical through-type mold core through hole is formed in the longitudinal front end of the propellant pressing plate body, the longitudinal front end of the mold core through hole is open, and propellant grain contact action plates are arranged on the left and right sides of the mold core through hole on the propellant pressing plate body.

[0008] The propellant grain contact action plates can vertically press the propellant grain downward during the ejection process of the propellant grain.

[0009] The mold core through hole can enable the mold core to pass through vertically upward during the ejection process of the propellant grain.

[0010] The application also has the following technical features: Preferably, the transverse width of the propellant pressing plate body is greater than or equal to the diameter of the propellant grain.

[0011] The longitudinal center line of the mold core through hole is collinear with the longitudinal center line of the propellant pressing plate body, the transverse width and the longitudinal depth of the mold core through hole are greater than the maximum diameter of the mold core, and the transverse width of the mold core through hole is also smaller than the diameter of the propellant grain.

[0012] Specifically, a propellant pressing plate left side auxiliary moving unit is arranged on the transverse left side of the longitudinal front end of the frame, the propellant pressing plate left side auxiliary moving unit comprises an L-shaped slide seat mounting block in the transverse section, the slide seat mounting block is arranged along the longitudinal direction, the vertical bottom of the horizontal plate of the slide seat mounting block is connected with the transverse left side of the vertical top of the frame, a plurality of slide seats are arranged on the vertical top of the horizontal plate of the slide seat mounting block, the plurality of slide seats are uniformly arranged along the longitudinal direction, a plurality of blind hole-shaped slide seat first mounting holes are formed on the left side wall of each slide seat along the transverse direction, and the plurality of slide seat first mounting holes are arrayed on the slide seat.

[0013] A plurality of transverse through-type slide seat second mounting holes are formed on the vertical plate of the slide seat mounting block, the slide seat second mounting holes are one-to-one corresponding to the slide seat first mounting holes, a slide seat mounting stud is further arranged in the slide seat second mounting hole along the transverse direction, the slide seat mounting stud is one-to-one corresponding to the slide seat second mounting hole, the slide seat mounting stud is sequentially arranged on the slide seat second mounting hole and the slide seat first mounting hole from left to right along the transverse direction, and the slide seat and the slide seat mounting block are connected.

[0014] A longitudinal through-type sliding groove is further formed on the right side wall of the slide seat, the sliding groove is one-to-one corresponding to the slide seat, and the groove width of the slot opening of the sliding groove is in a contraction shape.

[0015] The long strip-shaped slide rail is arranged in the longitudinal direction, vertical top and vertical bottom of the slide rail are provided with slide rail limiting grooves, the slide rail passes through the slide grooves on the plurality of slide seats in sequence from back to front in the longitudinal direction, and the left side inner wall of the slide rail limiting groove is installed in the slide groove; through the cooperation between the slide groove and the slide rail limiting groove, the horizontal and vertical limiting of the slide rail during the longitudinal movement is realized; the horizontal right side of the slide rail is connected with the horizontal left side of the body of the pressing plate.

[0016] Specifically, the longitudinal length of the slide rail is equal to the longitudinal length of the body of the pressing plate, a plurality of horizontal through pressing plate first mounting holes are formed on the slide rail, and the plurality of pressing plate first mounting holes are uniformly arranged in the longitudinal direction.

[0017] A plurality of blind hole-shaped pressing plate second mounting holes are formed on the horizontal left side wall of the body of the pressing plate in the horizontal direction, and the pressing plate second mounting holes correspond to the pressing plate first mounting holes one by one.

[0018] A pressing plate connecting stud is arranged in the horizontal direction in the pressing plate first mounting hole, the pressing plate connecting stud corresponds to the pressing plate first mounting hole one by one, the pressing plate connecting stud passes through the pressing plate first mounting hole and the pressing plate second mounting hole in sequence from left to right in the horizontal direction, and the connection between the slide rail and the body of the pressing plate is realized.

[0019] The horizontal right side of the longitudinal front end of the rack is further provided with a pressing plate right side auxiliary moving unit, the structure of the pressing plate right side auxiliary moving unit is the same as that of the pressing plate left side auxiliary moving unit, and the pressing plate right side auxiliary moving unit and the pressing plate left side auxiliary moving unit are mirror-symmetrically arranged with a plane perpendicular to the horizontal direction as a symmetry plane.

[0020] Specifically, the rack comprises a rack vertical seat arranged in the vertical direction and a rack horizontal plate arranged in the longitudinal direction, and the vertical top of the rack vertical seat and the vertical bottom of the rack horizontal plate are fixedly connected; the vertical top of the longitudinal front end of the rack horizontal plate is further provided with the pressing plate left side auxiliary moving unit and the pressing plate right side auxiliary moving unit.

[0021] The rack further comprises a rack bottom mounting plate arranged in the horizontal direction, the vertical top of the rack bottom mounting plate is fixedly connected with the vertical bottom of the rack vertical seat; a plurality of vertical through rack mounting holes are formed on the rack bottom mounting plate, and the plurality of rack mounting holes are arrayed on the rack bottom mounting plate.

[0022] The horizontal left side of the rack vertical seat is further provided with a left triangular support plate, one right angle edge of the left triangular support plate is fixedly connected with the horizontal left side wall of the rack vertical seat, and the other right angle edge of the left triangular support plate is fixedly connected with the vertical top of the rack bottom mounting plate.

[0023] A right-side triangular support plate is also installed on the right side of the vertical base of the frame. The structure of the right-side triangular support plate is the same as that of the left-side triangular support plate. The right-side triangular support plate and the left-side triangular support plate are arranged in a mirror symmetrical manner with a plane perpendicular to the horizontal as the plane of symmetry.

[0024] Specifically, a slot switch sensor is provided at the longitudinal rear end of the pressing plate body, and the vertical top of the slot switch sensor is connected to the longitudinal rear end of the pressing plate body.

[0025] The vertical top of the horizontal plate of the frame is also provided with a rear photoelectric guide rail. A rear slotted photoelectric switch is installed on the vertical top of the rear photoelectric guide rail. The vertical bottom of the slotted switch sensing piece can be inserted into the rear slotted photoelectric switch longitudinally by the movement of the pressing plate body, so as to realize the reset detection of the longitudinal rear end of the pressing plate body.

[0026] A front-end photoelectric guide rail is also provided on the longitudinal middle section of the top vertical section of the horizontal plate of the frame. A front-end slotted photoelectric switch is installed on the top vertical section of the front-end photoelectric guide rail. The vertical bottom of the slotted switch sensing piece can be inserted into the front-end slotted photoelectric switch longitudinally by the movement of the pressing plate body, so as to realize the detection that the longitudinal front end of the medicine column contact plate reaches the pressing position of the medicine column.

[0027] The aforementioned pressure plate drive cylinder, rear slotted photoelectric switch, front slotted photoelectric switch, and power supply are connected in series to form a closed control circuit.

[0028] Specifically, a buffer contact block is also provided at the vertical bottom of the pressing plate body. The buffer contact block is located at the vertical top of the horizontal plate of the frame and does not contact the horizontal plate of the frame. The vertical top of the buffer contact block is connected to the vertical bottom of the pressing plate body.

[0029] A rear hydraulic buffer is also installed at the longitudinal rear end of the vertical top of the horizontal plate of the frame. The rear hydraulic buffer reduces the speed of the pressure plate body before it resets by cooperating with the buffer contact block.

[0030] The vertical top of the horizontal plate of the frame is also equipped with a front hydraulic damper. The front hydraulic damper, through its cooperation with the damper contact block, slows down the speed of the drug column contact plate before it reaches the drug column pressing position.

[0031] Specifically, a pressure plate pad is also installed at the vertical bottom of the drug cartridge contact plate.

[0032] Compared with the prior art, the present invention has the following technical effects: (I) The device in this invention can be used to push the mold core upwards. The pressing plate approaches and presses the medicine column under the drive of the pressing plate driving cylinder, providing a stable downward pressure to the medicine column, effectively counteracting the adsorption force or friction between the medicine column and the mold core, preventing the medicine column from being carried out by the mold core, ensuring the quality of the medicine column and the continuity of production, while reducing manual intervention, reducing labor intensity, and improving production efficiency. It is suitable for large-scale automated industrial production.

[0033] (II) The device in this invention uses a pressure plate drive cylinder in conjunction with a slide rail, a slide seat, and a slide seat mounting block to drive the pressure plate to move radially. The cooperation of the slide rail and the slide seat makes the movement of the pressure plate more stable, and the slide seat mounting block enhances the stability of the connection. Combined with the cylinder speed control valve, the movement speed of the pressure plate can be precisely adjusted to adapt to the pressing needs of medicine columns of different materials.

[0034] (III) The cooperation between the rear slotted photoelectric switch, the front slotted photoelectric switch and the slotted switch sensing sheet in the device of the present invention can detect the position of the pressing plate in real time, ensuring the accuracy and safety of the pressing process.

[0035] (IV) The pressure plate liner in the device of the present invention is in direct contact with the drug column, which can avoid rigid contact between the pressure plate and the drug column. At the same time, the pressure plate liner of different materials can be replaced according to the characteristics of the drug column to further protect the drug column.

[0036] (V) The front-end hydraulic buffer in the device of the present invention slows down the speed when the pressure plate approaches the drug column to avoid impact damage to the drug column; the rear-end hydraulic buffer buffers the return force when the pressure plate resets to prevent rigid collision of components, which not only protects the structural integrity of the drug column, but also reduces mechanical wear and significantly extends the service life of the equipment.

[0037] (VI) The device of the present invention presses down the propellant column during the demolding process to prevent the propellant column from being carried out during the demolding process, thereby further avoiding potential problems such as product deformation, damage or even scrap, affecting the production qualification rate and product quality. It has the advantages of high efficiency, automation, precision and adaptability to a variety of application scenarios. It can be applied to the demolding process of the mold core after curing of products such as composite solid propellants and modified double-base propellants, which greatly improves the quality of the propellant column structure after demolding.

[0038] (VII) The device in this invention can achieve precise coordination between the core extraction and the pressing process, and can be applied to various casting processes, greatly improving the reliability of core extraction in the current casting process. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the overall structure of the device of the present invention.

[0040] Figure 2 This is a schematic diagram of the exploded structure of the device of the present invention.

[0041] Figure 3 This is a top view of the device of the present invention.

[0042] The meanings of the labels in the diagram are as follows: 1-Frame, 2-Pressure plate drive cylinder, 3-Cylinder moving block, 4-Pressure plate, 5-Slide mounting block, 6-Slide, 7-Slide second mounting hole, 8-Slide mounting stud, 9-Slide rail, 10-Slot switch induction plate, 11-Rear end photoelectric guide rail, 12-Rear end slotted photoelectric switch, 13-Front end photoelectric guide rail, 14-Front end slotted photoelectric switch, 15-Buffer contact block, 16-Rear end hydraulic buffer, 17-Front end hydraulic buffer, 18-Pressure plate pad.

[0043] 101-Rack vertical seat, 102-Rack horizontal plate, 103-Rack bottom mounting plate, 104-Rack mounting hole, 105-Left triangular support plate, 106-Right triangular support plate.

[0044] 401-Pressure plate body, 402-Mold core through hole, 403-Medication column contact plate, 404-Second mounting hole of pressure plate.

[0045] 601 - First mounting hole of the slide block, 602 - Slide groove.

[0046] 901 - Slide rail limiting groove, 902 - First mounting hole for pressure plate.

[0047] The specific content of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Detailed Implementation

[0048] It should be noted that, unless otherwise specified, all equipment and components in this work are based on existing technologies and commonly used equipment and components in the art. For example, the slide mounting studs are known slide mounting studs, the slide rails are known slide rails, the slot switch sensing plates are known slot switch sensing plates, the rear photoelectric guide rails are known rear photoelectric guide rails, the rear slot-type photoelectric switches are known rear slot-type photoelectric switches, the rear hydraulic dampers are known rear hydraulic dampers, the pressure plate pads are known pressure plate pads, and the robotic arms are known robotic arms.

[0049] In this invention, the OXYZ coordinate system is a three-dimensional rectangular coordinate system, with the X-axis pointing horizontally to the right; the Y-axis pointing vertically forward; and the Z-axis pointing vertically upward.

[0050] Following the above technical solution, specific embodiments of the present invention are given below. It should be noted that the present invention is not limited to the following specific embodiments, and all equivalent modifications made on the basis of the technical solution of the present invention fall within the protection scope of the present invention.

[0051] Example: This embodiment provides a pressing device suitable for the demolding process of cast propellant cartridges, such as... Figure 1 As shown, the machine includes a frame 1. The fixed end of the pressing plate drive cylinder 2 is installed longitudinally on the top vertical part of the frame 1. The telescopic end of the pressing plate drive cylinder 2 is connected to the cylinder moving block 3. The pressing plate 4 is provided on the top vertical part of the cylinder moving block 3. The pressing plate 4 is arranged horizontally. The pressing plate drive cylinder 2 drives the pressing plate 4 to move back and forth longitudinally through the cylinder moving block 3.

[0052] The pressing plate 4 includes a flat pressing plate body 401 arranged longitudinally. The longitudinal front end of the pressing plate body 401 is provided with a vertically penetrating mold core opening 402. The longitudinal front end of the mold core opening 402 is open. The left and right sides of the mold core opening 402 on the pressing plate body 401 are medicine column contact plates 403.

[0053] The contact plate 403 of the propellant column can press the propellant column vertically downward during the propellant column demolding process.

[0054] The core through-hole 402 allows the core to pass vertically upward during the extraction of the propellant.

[0055] In this embodiment, the propellant column is a cast-type propellant column commonly known in the art; the mold core is coaxially fitted inside the propellant column during the propellant column molding process, and the mold core is a mold core commonly known in the art.

[0056] In this embodiment, the pressure plate driving cylinder 2 is a magnetically coupled rodless cylinder, which is a commonly used magnetically coupled rodless cylinder known in the art.

[0057] In this embodiment, a cylinder speed control valve is also installed on the pressing plate drive cylinder 2. The cylinder speed control valve is used to adjust the longitudinal movement speed of the cylinder moving block 3 on the pressing plate drive cylinder 2. The cylinder speed control valve adopts a cylinder speed control valve commonly known in the art.

[0058] As a preferred embodiment, the lateral width of the pressure plate body 401 is greater than or equal to the diameter of the drug column.

[0059] The longitudinal centerline of the core through-hole 402 is collinear with the longitudinal centerline of the pressure plate body 401. The transverse width and longitudinal depth of the core through-hole 402 are both greater than the maximum diameter of the core. The transverse width of the core through-hole 402 is also smaller than the diameter of the drug column.

[0060] As a preferred embodiment of this invention, such as Figure 2As shown, a left auxiliary moving unit for the pressing plate is provided on the left side of the longitudinal front end of the frame 1. The left auxiliary moving unit for the pressing plate includes a slide mounting block 5 with an L-shaped cross section. The slide mounting block 5 is arranged longitudinally. The vertical bottom of the horizontal plate of the slide mounting block 5 is connected to the left side of the vertical top of the frame 1. Multiple slides 6 are also arranged on the vertical top of the horizontal plate of the slide mounting block 5. The multiple slides 6 are evenly arranged longitudinally. Multiple blind hole-shaped slide first mounting holes 601 are also opened on the left side wall of each slide 6 along the transverse direction. The multiple slide first mounting holes 601 are arranged in an array on the slide 6.

[0061] The vertical plate of the slide mounting block 5 is also provided with multiple horizontally penetrating second slide mounting holes 7, which correspond one-to-one with the first slide mounting holes 601. Slide mounting studs 8 are also provided horizontally inside the second slide mounting holes 7, which correspond one-to-one with the second slide mounting holes 7. The slide mounting studs 8 are installed horizontally from left to right on the second slide mounting holes 7 and the first slide mounting holes 601, so as to realize the connection between the slide 6 and the slide mounting block 5.

[0062] A longitudinally penetrating groove 602 is also provided on the right side wall of the slide block 6. The groove 602 corresponds one-to-one with the slide block 6, and the groove width at the groove opening of the groove 602 is tapered.

[0063] It also includes a long, narrow slide rail 9, which is arranged longitudinally. The slide rail 9 has a slide rail limiting groove 901 at its top and bottom. The slide rail 9 also passes through multiple slide slots 602 on the slide blocks 6 in sequence from back to front, so that the left inner wall of the slide rail limiting groove 901 is installed in the slide slot 602. Through the mutual cooperation between the slide slot 602 and the slide rail limiting groove 901, the slide rail 9 is limited laterally and vertically when moving longitudinally. The right side of the slide rail 9 is also connected to the left side of the pressure plate body 401.

[0064] In this embodiment, there are two slide blocks 6, which are arranged longitudinally back and forth. The longitudinal forward movement distance of the slide rail 9 is less than the longitudinal length of the slide rail 9 behind the rear end face of the slide block 6.

[0065] As a preferred embodiment, the longitudinal length of the slide rail 9 is equal to the longitudinal length of the pressure plate body 401. The slide rail 9 is also provided with a plurality of transversely penetrating first mounting holes 902 for the pressure plate, and the plurality of first mounting holes 902 for the pressure plate are evenly distributed along the longitudinal direction.

[0066] On the left lateral side wall of the pressure plate body 401, there are also a number of blind holes in the second mounting holes 404 of the pressure plate, which correspond one-to-one with the first mounting holes 902 of the pressure plate.

[0067] A pressure plate connecting stud is also provided in the transverse direction of the first mounting hole 902 of the pressure plate. The pressure plate connecting stud corresponds one-to-one with the first mounting hole 902 of the pressure plate. The pressure plate connecting stud passes through the first mounting hole 902 and the second mounting hole 404 of the pressure plate in the transverse direction from left to right, so as to realize the connection between the slide rail 9 and the pressure plate body 401.

[0068] like Figure 3 As shown, a right auxiliary moving unit for the pressing plate is also provided on the right side of the longitudinal front end of the frame 1. The structure of the right auxiliary moving unit for the pressing plate is the same as that of the left auxiliary moving unit for the pressing plate. The right auxiliary moving unit for the pressing plate and the left auxiliary moving unit for the pressing plate are arranged in a mirror symmetrical manner with a plane perpendicular to the transverse direction as the plane of symmetry.

[0069] In this embodiment, a plurality of blind-hole-shaped pressing plate mounting holes are also provided on the transverse right side wall of the pressing plate body 401. The right side auxiliary moving unit of the pressing plate is connected to the pressing plate body 401 through the pressing plate mounting holes on the transverse right side wall of the pressing plate body 401. Under the action of the left side auxiliary moving unit and the right side auxiliary moving unit of the pressing plate, the pressing plate 4 is promoted to move stably in the longitudinal direction.

[0070] As a preferred embodiment, the frame 1 includes a vertical frame seat 101 arranged vertically and a horizontal frame plate 102 arranged longitudinally. The vertical top of the vertical frame seat 101 and the vertical bottom of the horizontal frame plate 102 are fixedly connected. The vertical top of the longitudinal front end of the horizontal frame plate 102 is also equipped with a left auxiliary moving unit and a right auxiliary moving unit for the pressing plate.

[0071] It also includes a rack bottom mounting plate 103 arranged horizontally, the vertical top of the rack bottom mounting plate 103 being fixedly connected to the vertical bottom of the rack vertical seat 101; the rack bottom mounting plate 103 is also provided with a plurality of vertically penetrating rack mounting holes 104, which are arranged in an array on the rack bottom mounting plate 103.

[0072] A left triangular support plate 105 is also provided on the left side of the vertical base 101 of the frame. One right-angled side of the left triangular support plate 105 is fixedly connected to the left side wall of the vertical base 101 of the frame, and the other right-angled side of the left triangular support plate 105 is fixedly connected to the top vertical wall of the bottom mounting plate 103 of the frame.

[0073] A right triangular support plate 106 is also installed on the right side of the vertical base 101 of the frame. The structure of the right triangular support plate 106 is the same as that of the left triangular support plate 105. The right triangular support plate 106 and the left triangular support plate 105 are arranged in a mirror symmetrical manner with a plane perpendicular to the horizontal as the plane of symmetry.

[0074] In this embodiment, a first triangular support frame and a second triangular support frame are also provided at the vertical bottom of the horizontal plate 102. The first and second triangular support frames are symmetrically arranged on the longitudinal front and rear sides of the vertical base 101 of the frame to ensure the stable fixation of the horizontal plate 102. One right-angled side of the first triangular support frame is fixedly connected to the vertical bottom of the horizontal plate 102 of the frame, and the other right-angled side is fixedly connected to the longitudinal front sidewall of the vertical base 101 of the frame.

[0075] In this embodiment, the frame 1 is mounted on the workbench through multiple frame mounting holes 104, and the workbench is a commonly used workbench known in the art.

[0076] As a preferred embodiment, a slot switch sensor 10 is provided at the longitudinal rear end of the pressure plate body 401, and the vertical top of the slot switch sensor 10 is connected to the longitudinal rear end of the pressure plate body 401.

[0077] A rear-end photoelectric guide rail 11 is also provided at the longitudinal rear end of the vertical top of the horizontal plate 102 of the frame. A rear-end slotted photoelectric switch 12 is installed on the vertical top of the rear-end photoelectric guide rail 11. The vertical bottom of the slotted switch sensing piece 10 can be inserted into the rear-end slotted photoelectric switch 12 longitudinally by the movement of the pressing plate body 401, so as to realize the reset detection of the longitudinal rear end of the pressing plate body 401.

[0078] A front-end photoelectric guide rail 13 is also provided on the longitudinal middle section of the top vertical section of the horizontal plate 102 of the frame. A front-end slotted photoelectric switch 14 is installed on the top vertical section of the front-end photoelectric guide rail 13. The vertical bottom of the slotted switch sensing piece 10 can be inserted into the front-end slotted photoelectric switch 14 longitudinally by the movement of the pressing plate body 401, so as to realize the detection that the longitudinal front end of the medicine column contact plate 403 has reached the pressing position of the medicine column.

[0079] The pressure plate drive cylinder 2, the rear slotted photoelectric switch 12, the front slotted photoelectric switch 14, and the power supply are connected in series to form a closed control circuit.

[0080] In this embodiment, the power supply is the power supply for the entire control circuit. Since the pressing plate driving cylinder 2, the rear slotted photoelectric switch 12, the front slotted photoelectric switch 14, and the power supply are connected in series to form a closed control circuit, when the switch sensing piece 10 is inserted into the front slotted photoelectric switch 14, the power supply is cut off, the pressing plate driving cylinder 2 stops working, and the medicine column contact plate 403 reaches the pressing position; when the switch sensing piece 10 is inserted into the rear slotted photoelectric switch 12, the power supply is cut off, the pressing plate driving cylinder 2 stops working, and the pressing plate body 401 is reset; when the switch sensing piece 10 is not inserted into the front slotted photoelectric switch 14 or the rear slotted photoelectric switch 12, the circuit is connected, the pressing plate driving cylinder 2 works normally, and drives the pressing plate body 401 to move back and forth longitudinally.

[0081] In this embodiment, the pressing position of the drug cartridge is that the transverse center line (the transverse straight line where the longitudinal center is located) of the drug cartridge contact plate 403 is collinear with the transverse center line (the transverse straight line where the longitudinal center is located) of the drug cartridge.

[0082] In this embodiment, the reset position is the same as the initial position of the pressure plate body 401; the reset position is when the drug column contact plate 403 is completely located at the longitudinal rear end of the drug column.

[0083] In this embodiment, the slot opening of the rear slot-shaped photoelectric switch 12 faces upward, and the rear slot-shaped photoelectric switch 12 adopts a commonly used slot-shaped photoelectric switch known in the art; the rear slot-shaped photoelectric switch 12 has the same structure as the front slot-shaped photoelectric switch 14, and the rear slot-shaped photoelectric switch 12 confirms the longitudinal rear end reset of the pressure plate body 401 through cooperation with the slot switch sensing piece 10.

[0084] As a preferred embodiment, a buffer contact block 15 is also provided at the vertical bottom of the pressing plate body 401. The buffer contact block 15 is arranged at the vertical top of the frame horizontal plate 102 and does not contact the frame horizontal plate 102. The vertical top of the buffer contact block 15 is connected to the vertical bottom of the pressing plate body 401.

[0085] A rear hydraulic buffer 16 is also installed at the longitudinal rear end of the vertical top of the frame horizontal plate 102. The rear hydraulic buffer 16 reduces the speed of the pressure plate body 401 before it resets by cooperating with the buffer contact block 15.

[0086] A front hydraulic damper 17 is also installed at the longitudinal front end of the vertical top of the frame horizontal plate 102. The front hydraulic damper 17 reduces the speed of the drug column contact plate 403 before it reaches the drug column pressing position through the cooperation between the front hydraulic damper 17 and the damper contact block 15.

[0087] In this embodiment, the front hydraulic buffer 17 and the rear hydraulic buffer 16 are mirror-symmetrical with a plane perpendicular to the longitudinal direction as the plane of symmetry. The front hydraulic buffer 17 can prevent damage to the drug column caused by impact, and the rear hydraulic buffer 16 can buffer the return impact force of the drug press plate body 401 when the drug column is pressed and the drug press plate body 401 is reset, so as to prevent the drug press plate 4 from rigidly colliding with other components.

[0088] As a preferred embodiment, a pressure plate pad 18 is also installed at the vertical bottom of the drug cartridge contact plate 403.

[0089] In this embodiment, when the drug column contact plate 403 presses the drug column vertically downward, the vertical bottom of the pressure plate pad 18 is in direct contact with the vertical top of the drug column.

[0090] In this embodiment, a first triangular support frame and a second triangular support frame are also provided at the vertical bottom of the horizontal plate 102. The first and second triangular support frames are symmetrically arranged on the longitudinal front and rear sides of the vertical base 101 of the frame to ensure the stable fixation of the horizontal plate 102. One right-angled side of the first triangular support frame is fixedly connected to the vertical bottom of the horizontal plate 102 of the frame, and the other right-angled side is fixedly connected to the longitudinal front sidewall of the vertical base 101 of the frame.

[0091] In this embodiment, when the device is in use, the medicine column is located at the longitudinal front end of the entire device. The longitudinal center line (the longitudinal straight line where the transverse center is located) of the pressing plate body 401 is collinear with the longitudinal center line (the longitudinal straight line where the transverse center is located) of the medicine column. That is, the longitudinal center line (the longitudinal straight line where the transverse center is located) of the mold core through 402 is collinear with the longitudinal center line of the medicine column. The vertical bottom surface of the pressing plate pad 18 and the vertical top surface of the medicine column are at the same vertical height. Before the medicine column is demolded, the pressing plate body 401 is in the initial position. The pressing plate driving cylinder 2 drives the pressing plate body 401 to move forward longitudinally until the slot switch sensing piece 10 is inserted into the front slot-shaped photoelectric switch 14. The pressing plate driving cylinder 2 stops working, and the pressing plate body 401 reaches the medicine column pressing position. The speed of the medicine column contact plate 403 before reaching the medicine column pressing position is slowed down by the cooperation between the front hydraulic buffer 17 and the buffer contact block 15. When the drug cartridge contact plate 403 reaches the drug cartridge pressing position, the transverse center line (the transverse straight line where the longitudinal center is located) of the drug cartridge contact plate 403 is collinear with the transverse center line (the transverse straight line where the longitudinal center is located) of the drug cartridge. Then, the mold core inside the drug cartridge is pulled out vertically upward through the mold core through-hole 402 by an external robotic arm. At the same time, the drug cartridge contact plate 403 presses the drug cartridge vertically downward to prevent the drug cartridge from being pulled up during demolding. The pressure plate pad 402 comes into direct contact with the drug cartridge when the drug cartridge contact plate 403 presses the drug cartridge vertically downward to avoid damaging the drug cartridge. After the medicine column is demolded, the medicine pressing plate drive cylinder 2 drives the medicine pressing plate 4 to move longitudinally backward through the cylinder moving block 3 until the slot switch sensing plate 10 is inserted into the rear slot-shaped photoelectric switch 12. The medicine pressing plate drive cylinder 2 stops working and the medicine pressing plate body 401 is reset. At this time, the longitudinal front end face of the medicine column contact plate 403 is located at the longitudinal rear end of the medicine column. The speed of the medicine pressing plate body 401 before reset is reduced by the cooperation between the rear hydraulic buffer 16 and the buffer contact block 15.

Claims

1. A pressing device suitable for the demolding process of cast propellant cartridges, characterized in that, The machine includes a frame (1), on which the fixed end of a pressing plate driving cylinder (2) is installed longitudinally at the top vertical of the frame (1). The telescopic end of the pressing plate driving cylinder (2) is connected to a cylinder moving block (3). A pressing plate (4) is provided on the top vertical of the cylinder moving block (3). The pressing plate (4) is arranged horizontally. The pressing plate driving cylinder (2) drives the pressing plate (4) to move back and forth longitudinally through the cylinder moving block (3). The pressing plate (4) includes a flat pressing plate body (401) arranged longitudinally. The longitudinal front end of the pressing plate body (401) is provided with a vertically penetrating mold core opening (402). The longitudinal front end of the mold core opening (402) is open. The left and right sides of the mold core opening (402) on the pressing plate body (401) are drug column contact plates (403). The aforementioned drug cartridge contact plate (403) can press the drug cartridge vertically downward during the drug cartridge demolding process; The mold core through-hole (402) allows the mold core to pass through vertically upwards during the extraction of the medicament.

2. The pressing device for the demolding process of cast propellant columns as described in claim 1, characterized in that, The transverse width of the pressure plate body (401) is greater than or equal to the diameter of the drug column; The longitudinal centerline of the core through-hole (402) is collinear with the longitudinal centerline of the pressure plate body (401). The transverse width and longitudinal depth of the core through-hole (402) are both greater than the maximum diameter of the core. The transverse width of the core through-hole (402) is also smaller than the diameter of the drug column.

3. The pressing device for the demolding process of cast propellant columns as described in claim 1, characterized in that, The frame (1) is provided with a left auxiliary moving unit for the pressing plate on the left side of the longitudinal front end. The left auxiliary moving unit for the pressing plate includes a slide mounting block (5) with an L-shaped cross section. The slide mounting block (5) is arranged longitudinally. The vertical bottom of the horizontal plate of the slide mounting block (5) is connected to the left side of the vertical top of the frame (1). The vertical top of the horizontal plate of the slide mounting block (5) is also provided with multiple slides (6). The multiple slides (6) are evenly arranged longitudinally. The left side wall of each slide (6) is also provided with multiple blind hole-shaped slide first mounting holes (601) in the horizontal direction. The multiple slide first mounting holes (601) are arranged in an array on the slide (6). The vertical plate of the slide mounting block (5) is also provided with a plurality of transversely through slide second mounting holes (7), which correspond one-to-one with the slide first mounting hole (601). The slide second mounting hole (7) is also provided with a slide mounting stud (8) in the transverse direction, which corresponds one-to-one with the slide second mounting hole (7). The slide mounting stud (8) is installed in the slide second mounting hole (7) and the slide first mounting hole (601) in the transverse direction from left to right, so as to realize the connection between the slide (6) and the slide mounting block (5). The right side wall of the slide block (6) is also provided with a longitudinally penetrating slide groove (602), which corresponds one-to-one with the slide block (6). The groove width at the groove opening of the slide groove (602) is tapered. It also includes a long strip slide rail (9), which is arranged longitudinally. The top and bottom of the slide rail (9) are provided with slide rail limiting grooves (901). The slide rail (9) also passes through the sliding grooves (602) on the slide seats (6) in sequence from back to front, so that the left inner wall of the slide rail limiting groove (901) is installed in the sliding groove (602). Through the mutual cooperation between the sliding groove (602) and the slide rail limiting groove (901), the slide rail (9) is limited in the horizontal and vertical directions when it moves longitudinally. The right side of the slide rail (9) is also connected to the left side of the pressure plate body (401).

4. The pressing device for the demolding process of cast propellant columns as described in claim 3, characterized in that, The longitudinal length of the slide rail (9) is equal to the longitudinal length of the pressure plate body (401). The slide rail (9) is also provided with a number of transversely penetrating first mounting holes (902) for the pressure plate. The number of first mounting holes (902) for the pressure plate are evenly arranged along the longitudinal direction. The left lateral side wall of the pressure plate body (401) is provided with a plurality of blind hole-shaped second mounting holes (404) for the pressure plate, which correspond one-to-one with the first mounting holes (902) of the pressure plate. The first mounting hole (902) of the pressure plate is also provided with a pressure plate connecting stud along the transverse direction. The pressure plate connecting stud corresponds one-to-one with the first mounting hole (902) of the pressure plate. The pressure plate connecting stud passes through the first mounting hole (902) and the second mounting hole (404) of the pressure plate in the transverse direction from left to right, so as to realize the connection between the slide rail (9) and the pressure plate body (401). The frame (1) is provided with a right auxiliary moving unit for the pressing plate on the right side of the longitudinal front end. The structure of the right auxiliary moving unit for the pressing plate is the same as that of the left auxiliary moving unit for the pressing plate. The right auxiliary moving unit for the pressing plate and the left auxiliary moving unit for the pressing plate are arranged in a mirror symmetrical manner with a plane perpendicular to the transverse direction as the plane of symmetry.

5. The pressing device for the demolding process of cast propellant columns as described in claim 4, characterized in that, The frame (1) includes a vertical frame seat (101) arranged vertically and a horizontal frame plate (102) arranged longitudinally. The vertical top of the vertical frame seat (101) and the vertical bottom of the horizontal frame plate (102) are fixedly connected. The vertical top of the longitudinal front end of the horizontal frame plate (102) is also equipped with the left auxiliary moving unit of the pressing plate and the right auxiliary moving unit of the pressing plate. It also includes a rack bottom mounting plate (103) arranged horizontally, the vertical top of the rack bottom mounting plate (103) is fixedly connected to the vertical bottom of the rack vertical seat (101); the rack bottom mounting plate (103) is also provided with a plurality of vertical rack mounting holes (104), and the plurality of rack mounting holes (104) are arranged in an array on the rack bottom mounting plate (103); The vertical support plate (101) of the frame is also provided with a left triangular support plate (105) on the left side of the horizontal direction. One right-angled side of the left triangular support plate (105) is fixedly connected to the left side wall of the vertical support plate (101) of the frame, and the other right-angled side of the left triangular support plate (105) is fixedly connected to the top vertical position of the bottom mounting plate (103) of the frame. The vertical base (101) of the frame is also equipped with a right triangular support plate (106) on the right side of the horizontal direction. The structure of the right triangular support plate (106) is the same as that of the left triangular support plate (105). The right triangular support plate (106) and the left triangular support plate (105) are arranged in a mirror symmetrical manner with a plane perpendicular to the horizontal direction as the plane of symmetry.

6. The pressing device for the demolding process of cast propellant columns as described in claim 5, characterized in that, The longitudinal rear end of the pressure plate body (401) is provided with a slot switch sensor (10), and the vertical top of the slot switch sensor (10) is connected to the longitudinal rear end of the pressure plate body (401). The vertical top of the frame horizontal plate (102) is also provided with a rear-end photoelectric guide rail (11), and a rear-end slotted photoelectric switch (12) is installed on the vertical top of the rear-end photoelectric guide rail (11). The vertical bottom of the slotted switch sensing piece (10) can be inserted into the rear-end slotted photoelectric switch (12) longitudinally by the movement of the pressing plate body (401), so as to realize the reset detection of the longitudinal rear end of the pressing plate body (401). A front-end photoelectric guide rail (13) is also provided on the longitudinal middle section of the vertical top of the frame horizontal plate (102). A front-end slotted photoelectric switch (14) is installed on the vertical top of the front-end photoelectric guide rail (13). The vertical bottom of the slotted switch sensing piece (10) can be inserted into the front-end slotted photoelectric switch (14) longitudinally by the movement of the pressing plate body (401), so as to realize the detection that the longitudinal front end of the medicine column contact action plate (403) reaches the medicine column pressing position. The pressure plate driving cylinder (2), the rear slotted photoelectric switch (12), the front slotted photoelectric switch (14) and the power supply are connected in series to form a closed control circuit.

7. The pressing device for the demolding process of cast propellant columns as described in claim 5, characterized in that, The bottom of the pressing plate body (401) is also provided with a buffer contact block (15). The buffer contact block (15) is arranged on the top of the horizontal plate (102) of the frame and does not contact the horizontal plate (102). The top of the buffer contact block (15) is connected to the bottom of the pressing plate body (401). The vertical top of the frame horizontal plate (102) is also equipped with a rear hydraulic buffer (16), which reduces the speed of the pressure plate body (401) before resetting by cooperating with the buffer contact block (15). The vertical top of the frame horizontal plate (102) is also equipped with a front hydraulic buffer (17). The front hydraulic buffer (17) slows down the speed of the drug column contact plate (403) before it reaches the drug column pressing position through the cooperation between it and the buffer contact block (15).

8. The pressurizing device for the demolding process of cast propellant columns as described in claim 1, characterized in that, The vertical bottom of the drug cartridge contact plate (403) is also equipped with a drug pressure plate pad (18).

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