Sliding plate brick compression molding device and compression molding method thereof

Abstract

The invention relates to the technical field of brick compression molding, in particular to a sliding plate brick compression molding device and a compression molding method thereof.The device comprises a gantry rack, a hydraulic column ascending and descending in the gantry rack, a switching box device connected with the bottom end of the hydraulic column, an impact die connected with the bottom end of the switching box device and a discharging die arranged below the impact die; compared with the situation that in traditional sliding plate brick pressing production, a mold continuously and rigidly impacts brick raw materials, the internal stress of the raw materials is uneven, and the pressure resistance of the produced sliding plate brick is reduced, the impact mold continuously impacts the brick raw materials, the initial impact mold is subjected to strong flexible thrust which is gradually converted into weak flexible thrust, and therefore the pressure resistance of the sliding plate brick is improved. The internal stress of the brick raw materials is effectively eliminated, finally, the brick raw materials are accurately shaped through impact of rigid thrust, and after machining is finished, the impact die is automatically switched from rigidity to flexibility again under thrust, and preparation is made for next sliding plate brick production.

Description

Technical Field

[0001] This invention relates to the field of brick pressing and molding technology, specifically to a sliding plate brick pressing and molding device and its pressing and molding method. Background Technology

[0002] Sliding gate bricks are key refractory materials in the sliding gate system of continuous casting process. They are mainly used to control the flow of molten steel. Their core function is to open and close the molten steel through the close cooperation of the upper and lower bricks, while also withstanding the scouring of high-temperature molten steel and thermal stress impact.

[0003] The production process of sliding bricks mainly includes raw material preparation, molding, firing, impregnation treatment, and post-processing. The raw materials are refractory materials such as sintered alumina, synthetic mullite, highly plastic clay, and chromium oxide. A hydraulic pressing device is used for brick molding. The prepared raw materials are poured into the lower mold, and then the hydraulic pressing device drives the upper mold to descend. The upper mold repeatedly presses and impacts the raw materials, causing the fragments to gradually bind together under repeated impacts, eventually hardening to form a brick. The brick is then removed for subsequent firing treatment.

[0004] Traditional pressing technology uses a pressing device that drives the upper mold to rigidly impact the raw material. This impact causes severe internal misalignment of the raw material, resulting in uneven structure, cracking, or insufficient strength. In severe cases, it can cause surface cracks or internal voids, affecting the final strength. The pressed bricks have poor texture and uneven internal density, which in turn makes the fired bricks insufficient in compressive strength.

[0005] If a soft impact is used initially during the brick pressing process, it can promote better bonding of raw material components, effectively remove internal air bubbles and impurities, avoid cracking caused by gas expansion during firing, and form a brick with a denser structure and stronger toughness, which is convenient for subsequent firing. It also reduces stress concentration during molding and lowers the risk of cracking, which is especially suitable for products with complex shapes. Finally, a rigid impact is used to precisely shape the brick. Summary of the Invention

[0006] The purpose of this invention is to provide a sliding block pressing and molding device and a pressing and molding method thereon to solve the problem of uneven internal stress of raw materials caused by rigid impact as mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a sliding brick pressing and forming device, comprising a gantry frame, a hydraulic column that rises and falls within the gantry frame, a switching box device connected to the bottom end of the hydraulic column, an impact mold connected to the bottom end of the switching box device, and a feeding mold disposed below the impact mold. Brick raw materials are loaded into the feeding mold, and the impact mold repeatedly presses down on and impacts the brick raw materials to harden and form them. During the process, the switching box device changes the way it provides thrust to the impact mold from flexible to rigid. The switching box device includes:

[0008] The square box has a hydraulic column at the bottom that slides through a round hole at the top of the square box. The bottom of the square box is fixedly connected to the impact mold. T-shaped rail columns are fixed on the gantry frames on both sides of the square box, and the T-shaped rail columns are inserted into the sliding grooves on the outer wall of the square box.

[0009] A T-disc component and a rigid-flexible disc component are installed in a square box. The upper end of the T-disc component is fixedly connected to a hydraulic column, and the lower end of the T-disc component contacts and presses against the rigid-flexible disc component.

[0010] The multistager, releaser, and pressure generator are also installed in the square box. One end of the multistager is connected to the rigid-flexible disc drive, and the other end is connected to the pressure generator drive. The releaser is used to intercept and regulate the multistager, thereby controlling the switching speed of the flexible to rigid force provided to the impact die.

[0011] The rigid-flexible disc includes a pile shaft fixed in a square box, a ring plate platform movably sleeved on the outside of the pile shaft, a plurality of rigid-flexible strips evenly arranged around the upper edge of the ring plate platform, and an external gear ring fixedly sleeved at the lower end of the ring plate platform.

[0012] The T-disc component is provided with a ring of fixed horizontal pressure bars. The rigid-flexible strip includes a fixed column hard section embedded in the ring plate platform and an arc-shaped elastic column section with the top of the column hard section fixed vertically. The upper surface of the arc-shaped elastic column section is in contact with the horizontal pressure bars. The lower surface of the arc-shaped elastic column section is designed with a slope to make its elasticity different in different places, and the local elasticity is smaller closer to the column hard section.

[0013] The multistage includes a first worm gear meshing with an external gear ring, a stroke-extending disc gear driven at one end of the first worm gear, a release gear driven by a small gear fixed in the middle of the stroke-extending disc gear, a release shaft fixed in the middle of the release gear, and a row of gear plates fixedly sleeved on the release shaft.

[0014] The gear plate includes a ring plate and multiple stop teeth evenly arranged around the edge of the ring plate. Each gear plate on a row of gear plates has a different number of stop teeth, and each controls the number of intermittent stops during one revolution of the release shaft.

[0015] The first worm gear has a fixed gear at its end that meshes with the range extender gear for transmission. A recessed bracket is installed in the square box to support the first worm gear. The middle part of the range extender gear also has a fixed shaft that is movably sleeved in the circular groove opened on the square box.

[0016] The release device includes a release device for locking the gear plate, an external drive device installed on the outside of the square box, and an introduction shaft for transmission between the external drive device and the release device. A waist frame is fixed in the square box to limit and support the introduction shaft, and a V-shaped spring is fixed on the T-shaped rail column to lock the external drive device in one direction.

[0017] The release device includes an integrated frame fixed on a square box, a lead screw and a slide rod supported on the integrated frame, a T-shaped frame that slides directionally on the integrated frame, a traveling seat with one end penetrated by the lead screw, and a chuck assembly connected to one side of the traveling seat. The guide shaft is driven by a fixed gear that meshes with a rack on the T-shaped frame. The slide rod slides through a through hole opened on the traveling seat.

[0018] The chuck assembly includes a traveling frame fixed on a traveling seat, a modulation plate that slides through a hole in the traveling frame, an amplifying shaft supported on the traveling frame, an amplifying gear fixed at one end of the amplifying shaft, a dual control frame that drives on one side of the amplifying gear, and a damping ring and a release cylinder fixed on the dual control frame. One end of the release cylinder is slidably inserted into a round bar fixed on the traveling seat, and the other end of the release cylinder is blocked on one side of a stop tooth of the stop gear plate, and a damping ring is distributed on the other side of the stop tooth. One end of the dual control frame is inserted into a sliding hole in the traveling seat, and the gear fixed at the other end of the amplifying shaft meshes with a rack on the modulation plate. A straight column is provided on the T-shaped frame to slide through a square hole in the modulation plate, and a rack is provided on the dual control frame to mesh with the amplifying gear.

[0019] The external drive device includes a lap shaft that drives perpendicularly to the input shaft, a concave seat fixed on the outer wall of the square box, a quick-acting plate that slides in the concave seat, and a return spring for pushing the quick-acting plate to reset. One end of the return spring is fixed on the concave seat. The external drive device makes misaligned contact with the V-shaped spring during the downward phase of the square box. During the upward phase of the external drive device, it encounters the V-shaped spring. The end of the V-shaped spring is provided with an arc surface to strike the protrusion provided on the quick-acting plate. One end of the lap shaft extends to the outside of the square box, and a gear is fixed at the end to mesh with the rack provided on the quick-acting plate for transmission.

[0020] The presser includes a main shaft with one end coaxially fixedly connected to the release shaft, a one-way bearing fixedly sleeved at the other end of the main shaft, a mainspring with a fixed outer sleeve on the one-way bearing, an outer ring gear with a fixed outer sleeve on the mainspring, a side shaft driven by one side of the outer ring gear, an inner drive shaft driven perpendicularly to the side shaft, and an end frame for simultaneously supporting the side shaft and the main shaft. The end frame is fixed on the square box, one end of the inner drive shaft extends to the outside of the square box, and a gear is fixed at the end of the inner drive shaft to mesh with a rack fixed on the T-shaped rail column. The main shaft supports a back plate provided on one side of the outer ring gear.

[0021] The method for pressing and molding skateboard bricks includes the following steps:

[0022] Step 1: Set data before pressing and processing, set the number of times the hydraulic column rises and falls and the range of each rise and fall, and set the speed at which the flexible thrust in the switching box device switches to rigid thrust;

[0023] Step 2: During the pressing process, the impact die impacts the brick raw material fragments added to the feeding die a set number of times, causing the brick raw material to harden and take shape.

[0024] Step 3: During the continuous impact of the impact die, the way the switching box device applies thrust to the impact die gradually changes from strong flexibility to weak flexibility, and finally to rigidity;

[0025] Step 4: After the continuous impact of the impact mold, the switching box device automatically switches the pushing force applied to the impact mold from rigid to the initial strong flexibility, and then proceeds to the next round of brick pressing and forming.

[0026] Compared with the prior art, the beneficial effects of the present invention are:

[0027] 1. Compared to the traditional method of producing skateboard bricks, where the mold continuously and rigidly impacts the raw material, causing uneven internal stress and reducing the compressive strength of the produced skateboard bricks, this invention uses an impact mold to continuously impact the raw material. Initially, the impact mold is subjected to a strong flexible thrust, which gradually changes to a weak flexible thrust, effectively eliminating the internal stress of the raw material. Finally, the impact of the rigid thrust is used to accurately shape the raw material. After processing, the impact mold automatically switches from rigid to flexible under the thrust, preparing for the next production of skateboard bricks.

[0028] 2. By using a row of geared discs to correspond to the number of impacts of the impact die, as the geared discs rotate a full circle, the switching box device applies a thrust to the impact die, changing from strong flexible to weak flexible, then to rigid, and finally back to strong flexible. Different geared discs control different switching speeds, thus adapting to the different number of impacts of the corresponding impact die. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of the present invention.

[0030] Figure 2 This is a schematic diagram showing the location of the switching box device.

[0031] Figure 3 This is a schematic diagram of the switching box device.

[0032] Figure 4 This is a schematic diagram showing the location of the rigid and flexible disk components.

[0033] Figure 5 This is a schematic diagram showing the location of the generator.

[0034] Figure 6 This is a schematic diagram of a rigid-flexible disk structure.

[0035] Figure 7 This is a schematic diagram of a rigid-flexible strip structure.

[0036] Figure 8 This is a schematic diagram of a multistage device.

[0037] Figure 9 This is a schematic diagram showing the position of the first worm gear.

[0038] Figure 10 This is a schematic diagram of the release mechanism.

[0039] Figure 11 This is a schematic diagram of the release device.

[0040] Figure 12 This is a schematic diagram of the card header assembly structure.

[0041] Figure 13 This is a schematic diagram of the external drive unit.

[0042] Figure 14 This is a schematic diagram of the generator structure.

[0043] In the diagram: 1. Gantry frame; 2. Hydraulic column; 3. Switching box device; 4. Impact die; 5. Unloading die; 6. Square box; 7. T-shaped rail column; 8. T-plate component; 9. Horizontal pressure bar; 10. Rigid-flexible disc component; 11. Multistager; 12. Release device; 13. Pressure generator; 14. First worm gear; 15. Extender gear; 16. Release gear; 17. Gear wheel; 18. Pile shaft; 19. Ring plate platform; 20. Rigid-flexible bar; 201. Column rigid section; 202. Arc-shaped spring section; 21. External gear ring; 22. Release device; 23. Inlet shaft. 24. External drive unit; 25. V-shaped spring; 26. Waist position frame; 27. Slide bar; 28. Integrated frame; 29. ​​T-shaped frame; 30. Lead screw; 31. Traveling seat; 32. Card assembly; 33. Damping ring; 34. Release cylinder; 35. Double control frame; 36. Amplifying gear; 37. Amplifying shaft; 38. Traveling frame; 39. Modulation plate; 40. Concave seat; 41. Overlapping shaft; 42. Quick-acting plate; 43. Return spring; 44. Internal drive shaft; 45. Main shaft; 46. Side position shaft; 47. End position frame; 48. Outer ring gear; 49. One-way bearing; 50. Spring. Detailed Implementation

[0044] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the technical solutions of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0045] Please see Figures 1 to 14This invention provides a technical solution: a sliding block pressing and forming device, comprising a gantry frame 1, a hydraulic column 2 that rises and falls within the gantry frame 1, a switching box device 3 connected to the bottom end of the hydraulic column 2, an impact mold 4 connected to the bottom end of the switching box device 3, and a feeding mold 5 disposed below the impact mold 4. Brick raw materials are loaded into the feeding mold 5, and the impact mold 4 repeatedly presses down on and impacts the brick raw materials to harden and form them. During the process, the switching box device 3 provides thrust to the impact mold 4 in a manner that changes from flexible to rigid. The upper end of the hydraulic column 2 is connected to a hydraulic lifting drive mechanism, which is installed above the gantry frame 1. The switching box device 3 includes:

[0046] The bottom end of the square box 6 and the hydraulic column 2 slide through the round hole opened at the top of the square box 6. The bottom end of the square box 6 is fixedly connected to the impact mold 4. T-shaped rail columns 7 are fixed on the gantry frame 1 on both sides of the square box 6, and the T-shaped rail columns 7 are inserted into the sliding groove opened on the outer wall of the square box 6.

[0047] T-disc component 8 and rigid-flexible disc component 9 are set in the square box 6. The upper end of T-disc component 8 is fixedly connected to the hydraulic column 2, and the lower end of T-disc component 8 contacts and presses the rigid-flexible disc component 9.

[0048] Also installed in the square box 6 are a multistage device 10, a release device 11, and a pressure generator 12. One end of the multistage device 10 is connected to the rigid-flexible disc 9, and the other end is connected to the pressure generator 12. The release device 11 is used to intercept and regulate the multistage device 10, thereby controlling the switching speed of the flexible to rigid force provided to the impact die 4. The brick fragments gradually harden and solidify after multiple impacts. Different types of raw materials are made into different types of sliding plate bricks, or the same type of sliding plate bricks made from different amounts of raw materials may have different sizes and specifications. That is, different sliding plate bricks require different numbers of impacts during the impact molding process. For example, one type of sliding plate brick requires ten impacts. After the first impact, the impact mold 4 descends and completes the impact. During the rising phase of the impact mold 4, the first soft-to-hard switch is completed. This progressive control continues until the tenth impact, during which nine soft-to-hard switches are completed. The switch after the tenth impact is a reset switch, changing from rigid to flexible, waiting for the next operation. In summary, during the process of the switching box device 3 applying thrust to the impact mold 4, the transition from flexible to rigid is completed through nine switches. The number of soft-to-rigid switches varies for different sliding block types. The more switches there are, the longer the time required, and thus the slower the soft-to-rigid switch speed.

[0049] Reference Appendix Figure 6 Understandably, the rigid-flexible disc 9 includes a pile shaft 18 fixed in the square box 6, an annular plate platform 19 movably sleeved on the outside of the pile shaft 18, a plurality of rigid-flexible strips 20 evenly arranged around the upper edge of the annular plate platform 19, and an external gear ring 21 fixedly sleeved on the lower end of the annular plate platform 19.

[0050] Reference Appendix Figure 7Understandably, the T-disc component 8 is equipped with multiple horizontal pressure bars 81. The rigid-flexible strip 20 includes a column rigid section 201 fixedly embedded in the ring plate platform 19 and an arc-shaped elastic column section 202 vertically fixed at the top of the column rigid section 201. The upper surface of the arc-shaped elastic column section 202 contacts the horizontal pressure bars 81, and the lower surface of the arc-shaped elastic column section 202 is designed with a slope to make its elasticity different at different points, and the local elasticity is smaller closer to the column rigid section 201.

[0051] The hydraulic column 2 descends to push the T-disc component 8, which in turn presses down the rigid-flexible disc component 9 as a whole through the horizontal pressure bar 81. Then, the square box 6 presses down to impact the mold 4. The impact mold 4 descends to impact the brick raw material. The hydraulic column 2 rises to drive the T-disc component 8. The T-disc component 8 lifts the square box 6. The square box 6 drives the impact mold 4 to rise. In this way, each rise and fall of the hydraulic column 2 controls one impact operation.

[0052] Comparison Appendix Figure 7 To further analyze the transition from soft to rigid, for example, if the skateboard brick requires ten impacts and ten transitions occur, the corresponding ring platform 19 rotates 60 degrees clockwise. The ring platform 19 rotates intermittently. In a single transition, the ring platform 19 rotates 6 degrees. During the first nine rotations, the contact point between the horizontal pressure bar 81 and the upper surface of the arc-shaped spring column segment 202 gradually approaches the root of the arc-shaped spring column segment 202, and the flexible force gradually decreases. Finally, the horizontal pressure bar 81 contacts the upper surface of the column rigid segment 201, and the horizontal pressure bar 81 presses down and transmits power through the column rigid segment 201, completely changing the transmission method to rigid transmission. Then, during the tenth position reset transition, the tip of the next arc-shaped spring column segment 202 contacts the previous horizontal pressure bar 81, and it changes back to the softest transmission, waiting for the next skateboard brick production operation.

[0053] Reference Appendix Figure 8 Understandably, the multistage 10 includes a first worm 13 that meshes with the external gear ring 21, a stroke-extending disc gear 14 that drives one end of the first worm 13, a release gear 15 that drives a small gear fixed in the middle of the stroke-extending disc gear 14, a release shaft 16 fixed in the middle of the release gear 15, and a row of gear plates 17 fixedly sleeved on the release shaft 16.

[0054] The gear plate 17 includes a ring plate and multiple stop teeth evenly arranged around the edge of the ring plate. Each gear plate 17 on a row of gear plates 17 has a different number of stop teeth, and each controls the number of intermittent stops during one revolution of the release shaft 16.

[0055] The first worm gear 13 has a fixed gear at its end that meshes with the range extender gear 14 for transmission. A recessed frame is installed in the square box 6 to support the first worm gear 13. The middle part of the range extender gear 14 also has a fixed shaft that is movably sleeved in the circular groove opened on the square box 6. The shaft section on the first worm gear 13 is movably sleeved in the through hole opened on the recessed frame.

[0056] Release shaft 16 rotates one full revolution corresponding to the attached Figure 7The ring plate 19 rotates 60 degrees. Specifically, the release shaft 16 drives the release gear 15, which in turn drives the first worm gear 13 through the range extender gear 14. The first worm gear 13 rotates multiple times, controlling the outer gear ring 21 to rotate 60 degrees, which in turn controls the ring plate 19 to rotate, so that the rigid-flexible strip 20 rotates one-sixth of a turn, realizing the switch from flexible to rigid, and the final switch from rigid to flexible, that is, the release shaft 16 rotates one full turn, and the transmission mode becomes the initial most flexible state. The number of teeth on the release shaft 16 corresponds to the number of times the impact mold 4 impacts the brick raw material.

[0057] Reference Appendix Figure 10 It is understood that the release device 11 includes a release device 22 for locking the gear plate 17, an external drive device 24 mounted on the exterior of the square box 6, and an introduction shaft 23 for transmission between the external drive device 24 and the release device 22. A waist frame 26 is fixed in the square box 6 to limit and support the introduction shaft 23, and a V-shaped spring piece 25 is fixed on the T-shaped rail column 7 to lock the external drive device 24 in one direction.

[0058] The release device 22 includes an integrated frame 28 fixed on the square box 6, a lead screw 30 and a slide rod 27 simultaneously supported on the integrated frame 28, a T-shaped frame 29 that slides directionally on the integrated frame 28, a traveling seat 31 with one end penetrated by the lead screw 30, and a chuck assembly 32 connected to one side of the traveling seat 31. A fixed gear on the guide shaft 23 meshes with a rack on the T-shaped frame 29 for transmission. The slide rod 27 slides through a through hole in the traveling seat 31. A threaded hole in the traveling seat 31 engages with the lead screw 30. A protrusion on the T-shaped frame 29 is inserted into the opening in the integrated frame 28. In the slide groove, the ends of the slide rod 27 and the lead screw 30 are movably sleeved in the through holes opened on the integrated frame 28. One end of the lead screw 30 is connected to the drive motor installed in the square box 6. The position of the traveling seat 31 is controlled by controlling the number of rotations of the lead screw 30. The traveling seat 31 drives the chuck assembly 32. In this way, the chuck assembly 32 selects a gear plate 17 for positioning. In summary, the number of impacts of the impact mold 4 corresponds to the number of teeth on the gear plate 17. The hydraulic column 2 controls the impact mold 4. The number of impacts of the impact mold 4 is set in advance, and the corresponding gear plate 17 is selected at the same time.

[0059] The chuck assembly 32 includes a traveling frame 38 fixed on a traveling base 31, a modulation plate 39 sliding through a plate hole in the traveling frame 38, an amplifying shaft 37 supported on the traveling frame 38, an amplifying gear 36 fixed at one end of the amplifying shaft 37, a dual control frame 35 for transmission on one side of the amplifying gear 36, and a damping ring 33 and a release cylinder 34 fixed on the dual control frame 35. One end of the release cylinder 34 is slidably inserted into a round bar fixed on the traveling base 31, and the other end of the release cylinder 34 is blocked on one side of a stop tooth of the stop gear plate 17, and a damping ring 33 is distributed on the other side of the stop tooth. One end of the dual control frame 35 is inserted into a sliding hole in the traveling base 31, and the other end of the amplifying shaft 37 is fixed with a gear to mesh with a rack on the modulation plate 39. A straight column is provided on the T-shaped frame 29 to slide through a square hole in the modulation plate 39, and a rack is provided on the dual control frame 35 to mesh with the amplifying gear 36. (See attached diagram) Figure 12 Understanding: The amplifying shaft 37 is movably fitted into a through hole in the traveling frame 38. The chuck assembly 32 moves with the traveling seat 31, but is always controlled by the T-shaped frame 29. The T-shaped frame 29 drives the modulation plate 39, and the movement of the modulation plate 39 controls the rotation of the amplifying shaft 37. This, in turn, drives the dual control frame 35 through the amplifying gear 36. The dual control frame 35, damping ring 33, and release cylinder 34 move synchronously. The release cylinder 34 moves axially to the left and is pulled out from under the stop tooth of the gear plate 17. The gear plate 17 rotates clockwise, and after the release cylinder 34 returns to its original position and slides, it intercepts the next stop tooth. The damping ring 33 acts as a safety device, controlling the gear shift 17 to only complete the swing of one tooth at a time. This prevents multiple stop teeth from passing through the release cylinder 34 if the release cylinder 34 does not reset in time. Specifically, when the release cylinder 34 has not fully released the stop tooth, the damping ring 33 moves above the stop tooth. Once released, the next stop tooth will be intercepted by the damping ring 33. After the release cylinder 34 is fully reset, the damping ring 33 resets and releases the next stop tooth, which is then successfully intercepted by the release cylinder 34. In this way, the release cylinder 34 releases only one stop tooth of the gear shift 17 at a time.

[0060] The external drive unit 24 includes a lap shaft 41 that drives perpendicularly to the lead-in shaft 23, a concave seat 40 fixed to the outer wall of the square box 6, a quick-acting plate 42 that slides in the concave seat 40, and a return spring 43 for pushing the quick-acting plate 42 to reset. One end of the return spring 43 is fixed to the concave seat 40. During the downward phase of the square box 6, the external drive unit 24 makes misaligned contact with the V-shaped spring 25. During the upward phase of the external drive unit 24, it encounters the V-shaped spring 25. The end of the V-shaped spring 25 is provided with an arc surface to strike the protrusion provided on the quick-acting plate 42. One end of the lap shaft 41 extends to the outside of the square box 6, and a gear is fixed at the end to mesh with the rack provided on the quick-acting plate 42 for transmission. (See attached figure) Figure 13During the upward movement of the external drive device 24, although the protrusion on the quick-acting plate 42 can still be misaligned and separated from the V-shaped spring 25, it will experience an impact. The impacted quick-acting plate 42 will descend a short distance. After the V-shaped spring 25 and the quick-acting plate 42 are misaligned, the quick-acting plate 42 will rise under the push of the return spring 43. The rising and falling of the quick-acting plate 42 will cause the overlapping shaft 41 to rotate back and forth. The end of the overlapping shaft 41 will be driven by the fixed bevel gear and the fixed bevel gear at the end of the guide shaft 23. The back and forth rotation of the guide shaft 23 will cause the T-shaped frame 29 to slide back and forth. As mentioned before, it will eventually control the release cylinder 34 to complete one axial back and forth sliding, thereby releasing the stop tooth of a gear plate 17. The gear plate 17 has a rotation tendency. Once released, the gear plate 17 will immediately rotate an angle.

[0061] The actuator 12 includes a main shaft 45 with one end coaxially fixedly connected to the release shaft 16, a one-way bearing 49 fixedly sleeved at the other end of the main shaft 45, a mainspring 50 with an outer fixed sleeve on the one-way bearing 49, an outer ring gear 48 with an outer fixed sleeve on the mainspring 50, a side shaft 46 driven on one side of the outer ring gear 48, and an inner drive shaft 44 with perpendicular drive to the side shaft 46, and a final support 47 for simultaneously supporting the side shaft 46 and the main shaft 45. The final support 47 is fixed on the square box 6. One end of the inner drive shaft 44 extends to the outside of the square box 6, and a gear is fixed at the end of the inner drive shaft 44 to mesh with a rack fixed on the T-shaped rail column 7. The main shaft 45 supports a back plate provided on one side of the outer ring gear 48. (Refer to Appendix) Figure 14 Understanding is that after the coil spring 12 descends along with the box 6, the outer gear of the inner drive shaft 44 meshes with the stationary rack, causing the inner drive shaft 44 to rotate multiple times. A fixed bevel gear at the end of the inner drive shaft 44 engages with a fixed bevel gear at one end of the side shaft 46 for reversible transmission. A fixed gear at the other end of the side shaft 46 meshes with the outer ring gear 48 for transmission. The main shaft 45 is movably sleeved in the through hole in the middle of the back plate, causing the outer ring gear 48 to rotate in place, causing the spring 50 to contract and store power. This power is then controlled by the one-way bearing 49. 5. The main shaft 45 has a rotational tendency and applies pressure to the release shaft 16, which in turn controls the gear plate 17. During the reset and rising phase of the spring coil 12, the spring 50 returns to its initial full state. Subsequently, the spring 50 will rotate in reverse along with the outer ring gear 48. The one-way bearing 49 rotates completely along with the spring 50, but the inner ring of the one-way bearing 49 will not further drive the main shaft 45. In this way, the spring 50 accurately returns to its initial full state, and the one-way bearing 49 plays the role of reverse compensation.

[0062] The method for pressing and molding skateboard bricks includes the following steps:

[0063] Step 1: Set data before pressing and processing, set the number of times the hydraulic column 2 rises and falls and the range of each rise and fall, and set the speed at which the flexible thrust in the switching box device 3 switches to the rigid thrust.

[0064] Step 2: During the pressing process, the impact die 4 impacts the brick raw material fragments added to the feeding die 5 a set number of times to harden and shape the brick raw material.

[0065] Step 3: During the continuous impact of the impact mold 4, the way the switching box device 3 applies thrust to the impact mold 4 gradually changes from strong flexibility to weak flexibility, and finally to rigidity;

[0066] Step 4: After the impact mold 4 finishes continuous impact, the switching box device 3 automatically switches the pushing force applied to the impact mold 4 from rigid to the initial strong flexibility, and then proceeds to the next round of brick pressing and forming.

[0067] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. The skateboard brick pressing and forming device includes a gantry frame, a hydraulic column that lifts and lowers in the gantry frame, a switching box device connected to the bottom end of the hydraulic column, an impact die connected to the bottom end of the switching box device, and a feeding die arranged below the impact die, and is characterized in that: The material feeding mold is filled with brick raw material, and the impact mold repeatedly presses down on the brick raw material to harden and shape it. During the process, the switching box device changes the way the impact mold provides thrust from flexible to rigid. The switching box device includes: The square box has a hydraulic column at the bottom that slides through a round hole at the top of the square box. The bottom of the square box is fixedly connected to the impact mold. T-shaped rail columns are fixed on the gantry frames on both sides of the square box, and the T-shaped rail columns are inserted into the sliding grooves on the outer wall of the square box. A T-disc component and a rigid-flexible disc component are installed in a square box. The upper end of the T-disc component is fixedly connected to a hydraulic column, and the lower end of the T-disc component contacts and presses against the rigid-flexible disc component. The multistager, releaser, and pressure generator are also installed in the square box. One end of the multistager is connected to the rigid-flexible disc drive, and the other end is connected to the pressure generator drive. The releaser is used to intercept and regulate the multistager, thereby controlling the switching speed of the flexible to rigid force provided to the impact die.

2. The sliding block pressing and forming device according to claim 1, characterized in that: The rigid-flexible disc includes a pile shaft fixed in a square box, a ring plate platform movably sleeved on the outside of the pile shaft, a plurality of rigid-flexible strips evenly arranged around the upper edge of the ring plate platform, and an external gear ring fixedly sleeved at the lower end of the ring plate platform.

3. The sliding block pressing and forming device according to claim 2, characterized in that: The T-disc component is provided with a ring of fixed horizontal pressure bars. The rigid-flexible strip includes a fixed column hard section embedded in the ring plate platform and an arc-shaped elastic column section with the top of the column hard section fixed vertically. The upper surface of the arc-shaped elastic column section is in contact with the horizontal pressure bars. The lower surface of the arc-shaped elastic column section is designed with a slope to make its elasticity different in different places, and the local elasticity is smaller closer to the column hard section.

4. The sliding block pressing and forming device according to claim 2, characterized in that: The multistage includes a first worm gear meshing with an external gear ring, a stroke-extending disc gear driven at one end of the first worm gear, a release gear driven by a small gear fixed in the middle of the stroke-extending disc gear, a release shaft fixed in the middle of the release gear, and a row of gear plates fixedly sleeved on the release shaft. The gear plate includes a ring plate and multiple stop teeth evenly arranged around the edge of the ring plate. Each gear plate on a row of gear plates has a different number of stop teeth, and each controls the number of intermittent stops during one revolution of the release shaft.

5. The sliding block pressing and forming device according to claim 4, characterized in that: The first worm gear has a fixed gear at its end that meshes with the range extender gear for transmission. A recessed bracket is installed in the square box to support the first worm gear. The middle part of the range extender gear also has a fixed shaft that is movably sleeved in the circular groove opened on the square box.

6. The sliding block pressing and forming device according to claim 4, characterized in that: The release device includes a release device for locking the gear plate, an external drive device installed on the outside of the square box, and an introduction shaft for transmission between the external drive device and the release device. A waist frame is fixed in the square box to limit and support the introduction shaft, and a V-shaped spring is fixed on the T-shaped rail column to lock the external drive device in one direction. The release device includes an integrated frame fixed on a square box, a lead screw and a slide rod supported on the integrated frame, a T-shaped frame that slides directionally on the integrated frame, a traveling seat with one end penetrated by the lead screw, and a chuck assembly connected to one side of the traveling seat. The guide shaft is driven by a fixed gear that meshes with a rack on the T-shaped frame. The slide rod slides through a through hole opened on the traveling seat.

7. The sliding block pressing and forming device according to claim 6, characterized in that: The chuck assembly includes a traveling frame fixed on a traveling seat, a modulation plate that slides through a hole in the traveling frame, an amplifying shaft supported on the traveling frame, an amplifying gear fixed at one end of the amplifying shaft, a dual control frame that drives on one side of the amplifying gear, and a damping ring and a release cylinder fixed on the dual control frame. One end of the release cylinder is slidably inserted into a round bar fixed on the traveling seat, and the other end of the release cylinder is blocked on one side of a stop tooth of the stop gear plate, and a damping ring is distributed on the other side of the stop tooth. One end of the dual control frame is inserted into a sliding hole in the traveling seat, and the gear fixed at the other end of the amplifying shaft meshes with a rack on the modulation plate. A straight column is provided on the T-shaped frame to slide through a square hole in the modulation plate, and a rack is provided on the dual control frame to mesh with the amplifying gear.

8. The sliding block pressing and forming device according to claim 6, characterized in that: The external drive device includes a lap shaft that drives perpendicularly to the input shaft, a concave seat fixed on the outer wall of the square box, a quick-acting plate that slides in the concave seat, and a return spring for pushing the quick-acting plate to reset. One end of the return spring is fixed on the concave seat. The external drive device makes misaligned contact with the V-shaped spring during the downward phase of the square box. During the upward phase of the external drive device, it encounters the V-shaped spring. The end of the V-shaped spring is provided with an arc surface to strike the protrusion provided on the quick-acting plate. One end of the lap shaft extends to the outside of the square box, and a gear is fixed at the end to mesh with the rack provided on the quick-acting plate for transmission.

9. The sliding block pressing and forming device according to claim 4, characterized in that: The presser includes a main shaft with one end coaxially fixedly connected to the release shaft, a one-way bearing fixedly sleeved at the other end of the main shaft, a mainspring with a fixed outer sleeve on the one-way bearing, an outer ring gear with a fixed outer sleeve on the mainspring, a side shaft driven by one side of the outer ring gear, an inner drive shaft driven perpendicularly to the side shaft, and an end frame for simultaneously supporting the side shaft and the main shaft. The end frame is fixed on the square box, one end of the inner drive shaft extends to the outside of the square box, and a gear is fixed at the end of the inner drive shaft to mesh with a rack fixed on the T-shaped rail column. The main shaft supports a back plate provided on one side of the outer ring gear.

10. A method for pressing and molding skateboard bricks, characterized in that, Includes the following steps: Step 1: Set data before pressing and processing, set the number of times the hydraulic column rises and falls and the range of each rise and fall, and set the speed at which the flexible thrust in the switching box device switches to rigid thrust; Step 2: During the pressing process, the impact die impacts the brick raw material fragments added to the feeding die a set number of times, causing the brick raw material to harden and take shape. Step 3: During the continuous impact of the impact die, the way the switching box device applies thrust to the impact die gradually changes from strong flexibility to weak flexibility, and finally to rigidity; Step 4: After the continuous impact of the impact mold, the switching box device automatically switches the pushing force applied to the impact mold from rigid to the initial strong flexibility, and then proceeds to the next round of brick pressing and forming.

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