Hookah charcoal punch forming equipment

Abstract

The invention relates to hookah charcoal punch forming equipment which can keep the bottom shape of a forming hole consistent with that of a punch, so that the density of charcoal sheets is as uniform as possible. A bottom plate of the forming hole is a deformable elastic metal plate, an upper-layer elastic film and a lower-layer elastic film are arranged below the bottom plate, a containing cavity for containing bearing liquid is defined between the upper-layer elastic film and the lower-layer elastic film, the containing cavity is provided with a liquid inlet and outlet, and the liquid inlet and outlet is connected with a liquid pressurizing device through a liquid channel so that the bearing liquid with certain pressure can be added into the containing cavity; a plurality of pushing columns extending in the axial direction of the forming hole are arranged below the lower layer elastic film side by side, all the pushing columns correspond to all subareas on the lower surface of the forming column in a one-to-one mode, and each pushing column is connected with a micro hydraulic rod so as to adjust the height of the pushing column; the height mean value of all the subareas on the lower surface of the punch is scanned, and then all the micro hydraulic rods are controlled to adjust the height in a matched mode.

Description

Technical Field

[0001] The invention relates to hookah charcoal stamping and forming equipment. Background Art

[0002] Shisha charcoal is a combustion material designed specifically for hookah (hookah / shama). Made from natural wood or organic materials (such as coconut shells or bamboo charcoal) through high-temperature carbonization, it is used to heat tobacco or spices to produce smoke, which is then filtered through water for inhalation. Tobacco is wrapped in tin foil, which is perforated with small holes. The burning charcoal is placed on top of the foil to heat the tobacco and produce smoke. Therefore, shisha charcoal must meet the following requirements: it must burn stably to provide uniform heat and avoid overheating that can cause the tobacco to burn. This requires a uniform density.

[0003] However, the molds of existing hookah charcoal stamping and forming equipment often have the problem of insufficient centering accuracy, which is manifested as the offset of the punch and the die barrel, resulting in uneven density of the charcoal sheets. The main reason is that the punch wears out after long-term use. The points on the lower surface of the worn punch are not in the same plane, so the extrusion pressure on the material in the forming hole of the die barrel is different, resulting in different densities of the formed charcoal sheets. A set of molds generally has multiple rows of punches and multiple rows of die barrels. If one or more of them are worn, it is too costly to replace the mold. In addition, the mold replacement also requires downtime, which suspends the production line and affects processing efficiency. Summary of the Invention

[0004] The purpose of the present invention is to provide a hookah charcoal stamping and forming device, which can scan the coordinates of each partition on the lower surface of the punch, and then control the hydraulic telescopic rod to adjust the height accordingly, so that the bottom shape of the forming hole of the mold barrel is consistent with the punch, thereby making the density of the stamped charcoal sheet as uniform as possible.

[0005] The technical solution of the present invention is as follows: A hookah charcoal stamping and forming device comprises a mold barrel and a punch, the mold barrel comprises a forming hole, and the punch comprises a forming column, characterized in that the bottom plate of the forming hole is a deformable elastic metal plate, an upper elastic membrane and a lower elastic membrane are provided below the bottom plate, the edges of the upper and lower elastic membranes are respectively fixedly connected to the corresponding hole walls of the forming hole, a holding cavity for containing a carrying liquid is formed between the upper and lower elastic membranes, the holding cavity has a liquid inlet and outlet, the liquid inlet and outlet are connected to a liquid pressurizing device through a liquid channel to add a carrying liquid with a certain pressure into the holding cavity, a plurality of push columns extending axially along the forming hole are arranged in parallel below the lower elastic membrane, each push column is respectively arranged in one-to-one correspondence with each partition of the lower surface of the forming column, each push column is connected to a micro hydraulic rod to adjust the height of the push column, and also includes a surface scanning radar that can be retracted to the bottom of the forming column to scan the height average of each partition of the lower surface of the punch, thereby controlling each micro hydraulic rod to adapt and adjust the height.

[0006] Based on the above solution, further improvements are made as follows: the top of the push column is spherical. The spherical surface of the push column, on the one hand, eliminates sharp edges between adjacent push columns, thus preventing the edges from cutting the underlying elastic membrane; on the other hand, the spherical surface is also smoother, making the final state of the bottom plate smoother.

[0007] Based on the above solution, a further improvement is made as follows: the carrying liquid is hydraulic oil, and the liquid pressurizing device includes a hydraulic pump.

[0008] Based on the above solution, a further improvement is made: both the upper and lower elastic membranes are a double-layer composite structure of nitrile rubber and NiBe2. The nitrile rubber provides high elasticity, while the alloy provides high strength, allowing them to more fully fill the gaps and steps between the push pins, resulting in a smoother top surface formed by each push pin.

[0009] Based on the above solution, the following improvements are made: the base plate is made of Ni42CrTiAlMoCu, and its thickness is greater than that of the upper and lower elastic membranes. This is because the upper and lower elastic membranes need to deform to fill various gaps, such as the step gaps formed by the height difference between adjacent push columns. This requires a greater deformation of the elastic membranes, and a thinner elastic membrane will provide greater elasticity. However, the base plate must also maintain overall smoothness and does not require large deformation. Furthermore, the elastic membranes primarily rely on the pressure provided by the load-bearing liquid within them. The elastic membranes require a high degree of elasticity to allow the load-bearing liquid within them to fully fill the gaps. While the elastic membranes do not need to be too thick to meet these requirements, the base plate itself requires a certain strength and load-bearing capacity. Its deformation primarily compensates for large uneven areas, so it needs to be thicker.

[0010] Based on the above solution, a further improvement is made as follows: the cross-sections of the forming holes and the forming columns are square, there are nine push columns arranged in a nine-square grid, and the lower surface of the corresponding forming columns is divided into nine sections arranged in a nine-square grid. This allows for smaller gaps when the square structure is spliced.

[0011] Based on the above solution, a further improvement is made as follows: the carrying liquid adopts synthetic hydrocarbon type hydraulic oil.

[0012] On the basis of the above scheme, further improvements are made as follows: the area scanning radar is driven to move telescopically by a horizontally arranged electric push rod.

[0013] Based on the above solution, further improvements are made as follows, including a controller, which is connected to the area scanning sensor and the control modules of each micro hydraulic rod respectively, so as to control each micro hydraulic rod to extend or retract a certain distance after calculation based on the feedback from the area scanning sensor.

[0014] Beneficial effects of the present invention: When the hookah charcoal stamping and forming equipment of the present invention is used, first, the surface scanning radar is moved to the bottom of the forming column of the punch to scan the position coordinates of the 9 partitions artificially divided on the lower surface of the forming column. The 9 partitions are arranged in a nine-square grid, and each partition corresponds to collecting 9 evenly distributed points. The nine points are respectively distributed in the secondary nine-square grid partition of the partition. The average value of the vertical position of the 9 points in the secondary nine-square grid partition represents the vertical position coordinate value of the partition. The coordinate value of the partition is controlled by the controller to control the extension and contraction of the micro hydraulic rod of the corresponding partition, so that it drives the pushing column to move the corresponding distance. After the pushing columns corresponding to the 9 partitions are moved respectively, the pushing columns of the 9 partitions are moved. The vertex coordinates are consistent with the coordinates of the 9 partitions of the forming column scanned and calculated. Subsequently, the surface scanning radar is retracted, and the liquid pressurizing device is started to pump the carrying liquid into the accommodating cavity so that the carrying liquid meets the set pressure, thereby supporting the upper and lower elastic membranes. The material then enters the forming hole, and the punch is started to punch, so that the forming column of the punch enters the forming hole and squeezes the material in the forming hole. During the extrusion process, the bottom plate and the upper and lower elastic membranes are deformed respectively, and the shape of the bottom plate is finally consistent with the shape of the lower surface of the forming column. The upper and lower elastic membranes are finally deformed to fill all gaps and cracks between the bottom plate and the push column, and finally maintain this shape until the stamping of the carbon sheet is completed. It can be seen from the above process that the solution of the present application can scan the shape of the formed column after wear without replacing the punch and the die barrel, and use the evenly distributed push columns to adjust the height accordingly to adapt to the shape of the formed column after wear, and use the upper and lower elastic membranes and the high-pressure bearing liquid filled therein to fill the gap to form a smooth lower bearing surface that is consistent with the shape of the lower surface of the forming column, so that the carbon sheet located between the base plate and the lower surface of the forming column has the same density after being squeezed, thereby ensuring that the processed carbon sheet has stable temperature and burning speed during combustion. In addition, through this solution, the present application increases the service life of the stamping die, and there is no need to replace the entire die due to damage to one or several punches to increase costs and affect stamping production. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structural principle of an embodiment of a hookah charcoal stamping and forming device of the present invention; Figure 2 for Figure 1 A partial enlarged view of point A in the middle; Figure 3 Schematic diagram of the arrangement structure of the corresponding ejector pins in the forming hole; Figure 4 This is a schematic diagram of the partitioning and sampling point distribution when scanning the lower surface of the forming column; Figure 5 for Figure 4 A partial enlarged view of a partition corresponding to point B in the middle; In the figure: 1-punch, 11-forming column, 101-109-first to ninth scanning partitions, 1101-1109-first to ninth sampling point partitions, 1110-sampling point, 2-surface scanning radar, 21-electric push rod, 3-die cylinder, 31-forming hole, 311-bottom plate, 301-309-first to ninth partitions, 32-upper elastic membrane, 33-lower elastic membrane, 34-accommodating chamber, 35-liquid inlet and outlet, 36-liquid channel, 37-liquid pressurizing device, 38-pushing column, 381-spherical surface, 39-micro hydraulic rod. DETAILED DESCRIPTION

[0016] In order to make the objectives, technical solutions, and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present invention and are not intended to limit the present invention. That is, the embodiments described herein are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and illustrated in the drawings herein may be arranged and designed in various different configurations.

[0017] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but is merely intended to represent selected embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative work are within the scope of protection of the present invention.

[0018] It should be noted that relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus comprising the element.

[0019] The features and performance of the present invention are further described in detail below with reference to the embodiments.

[0020] An embodiment of a hookah charcoal stamping and forming device of the present invention: The hookah charcoal stamping and forming device comprises a die barrel 3 and a punch 1, and the die barrel 3 and the punch 1 are respectively provided with two rows, each row of five forming columns 11 and forming holes 31, and the cross sections of the forming columns 11 and the forming holes 31 are square holes of uniform size, so as to stamp square hookah charcoal sheets, such as Figure 1 The figure shows a schematic structural diagram of a corresponding forming hole 31 and a forming column 11. The bottom plate 311 of the forming hole 31 is a deformable elastic metal plate. An upper elastic membrane 32 and a lower elastic membrane 33 are provided below the bottom plate 311. The edges of the upper and lower elastic membranes are fixedly connected to the corresponding hole walls of the forming hole 31. A receiving cavity 34 for receiving the carrying liquid is formed between the upper and lower elastic membranes. The receiving cavity 34 has a liquid inlet and outlet 35. The liquid inlet and outlet 35 are connected to a liquid pressurizing device 37 through a liquid channel 36 to pressurize the receiving cavity 34. A carrying liquid with a certain pressure is added to the punch 1, and a plurality of push pins 38 extending axially along the forming hole 31 are arranged in parallel below the lower elastic membrane 33. Each push pin 38 is respectively arranged in a one-to-one correspondence with each partition of the lower surface of the forming column 11. Each push pin 38 is connected to a micro hydraulic rod 39 to adjust the height of the push pin 38, and also includes a surface scanning radar 2 that can be extended to the bottom of the forming column 11 to scan the height average of each partition of the lower surface of the punch 1, thereby controlling each micro hydraulic rod 39 to adapt and adjust the height.

[0021] In this embodiment, the top of the push pin 38 is a spherical surface 381. This spherical surface 381 not only eliminates sharp corners between adjacent push pins 38, preventing them from cutting the underlying elastic membrane 33, but also provides a smoother surface, facilitating a smoother final appearance for the base plate 311. The carrier fluid is hydraulic oil, preferably a synthetic hydrocarbon hydraulic oil. The liquid pressurizing device 37 includes a hydraulic pump. The micro hydraulic rod 39 and the carrier fluid in this embodiment can be pressurized using the same hydraulic system, which includes a hydraulic oil tank, a hydraulic pump, a control valve, an actuator, and the like.

[0022] In this embodiment, both the upper elastic membrane 32 and the lower elastic membrane 33 are constructed from a double-layer composite structure of nitrile rubber and NiBe2. The nitrile rubber provides high elasticity, while the alloy provides high strength, allowing them to more fully fill the gaps and steps between the push pins 38, resulting in a smoother top surface formed by the push pins 38. The base plate 311 is made of Ni42CrTiAlMoCu and is thicker than the upper and lower elastic membranes. Because the upper and lower elastic membranes need to rely on their deformation to fill the gaps in each smile, such as the step gaps formed by the height difference between adjacent push columns 38, the elastic membrane needs to deform more. The thinner the elastic membrane, the better the elasticity. The bottom plate 311 must also ensure overall smoothness and does not require a large deformation. Secondly, the load-bearing capacity of the elastic membrane mainly depends on the pressure provided by the load-bearing liquid inside it. The elastic membrane requires a large amount of elasticity so that the load-bearing liquid inside it can fully fill the gaps in each smile. The elastic membrane does not need to be too thick to meet the requirements, while the bottom plate 311 itself requires a certain strength and load-bearing capacity. It mainly compensates for the deformation of large concave and convex areas, so it needs to be thicker.

[0023] In this embodiment, the cross-sections of the forming holes 31 and the forming columns 11 are square. There are nine push columns 38 arranged in a nine-square grid, and the lower surface of the forming columns 11 is divided into nine sections arranged in a nine-square grid. This allows for smaller gaps when the square structure is assembled. The telescopic movement of the area scanning radar 2 is driven by a horizontally mounted electric push rod 21.

[0024] The system also includes a controller, which is connected to the area scanning sensor and the control modules of each micro hydraulic rod 39 respectively, so as to control each micro hydraulic rod 39 to extend or retract a certain distance after calculation based on the feedback from the area scanning sensor.

[0025] When the hookah charcoal stamping and forming device of the present invention is in use, first, the surface scanning radar 2 is moved to the bottom of the forming column 11 of the punch 1 to scan the position coordinates of the 9 partitions (i.e., the first to ninth scanning partitions 101-109) artificially divided on the lower surface of the forming column 11. The 9 scanning partitions are arranged in a nine-square grid, and each partition corresponds to the collection of 9 evenly distributed sampling points 1110. The nine sampling points 1110 are respectively distributed in the secondary nine-square grid partition of the partition (i.e., the first to ninth sampling points 1110 partitions 1101-1109). The average value of the vertical positions of the 9 points in the secondary nine-square grid partition represents the vertical position coordinate value of the partition. The coordinate value of the partition is controlled by the controller to control the extension and contraction of the micro hydraulic rod 39 of the corresponding partition, so that it drives the pushing column 38 to move the corresponding distance. The top push column 38 corresponding to the 9 partitions is the same as the vertical position coordinate value of the partition. After the push pins 38 move respectively, the vertex coordinates of the push pins 38 are consistent with the coordinates of the 9 partitions of the forming column 11 scanned and calculated. Then, the surface scanning radar 2 is retracted, and the liquid pressurizing device 37 is started to pump the carrying liquid into the accommodating chamber 34 so that the carrying liquid meets the set pressure, thereby supporting the upper and lower elastic membranes. Then the material enters the forming hole 31, and the punch 1 is started to punch, so that the forming column 11 of the punch 1 enters the forming hole 31 and squeezes the material in the forming hole 31. During the extrusion process, the bottom plate 311 and the upper and lower elastic membranes are deformed respectively, and the shape of the bottom plate 311 is finally consistent with the shape of the lower surface of the forming column 11. The upper and lower elastic membranes are finally deformed to fill all gaps and cracks between the bottom plate 311 and the push pins 38, and finally maintain this shape until the stamping of the carbon sheet is completed. It can be seen from the above process that the solution of the present application can scan the shape of the formed column 11 after wear without replacing the punch 1 and the die barrel 3, and use the evenly distributed push columns 38 to adjust the height accordingly to adapt to the shape of the formed column 11 after wear, and use the upper and lower elastic membranes and the high-pressure bearing liquid filled therein to fill the gap to form a smooth lower bearing surface that is consistent with the shape of the lower surface of the forming column 11, so that the carbon sheet located between the bottom plate 311 and the lower surface of the forming column 11 has the same density after being squeezed, thereby ensuring that the processed carbon sheet has stable temperature and burning speed during combustion. In addition, through this solution, the present application increases the service life of the stamping die, and there is no need to damage one or several punches 1 to replace the entire die to increase costs and affect stamping production.

[0026] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The scope of patent protection of the present invention shall be based on the claims. Any equivalent structural changes made using the description and drawings of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A hookah charcoal stamping and forming device, comprising a die barrel and a punch, wherein the die barrel comprises a forming hole and the punch comprises a forming column, characterized in that: The bottom plate of the forming hole is a deformable elastic metal plate, and an upper elastic membrane and a lower elastic membrane are provided under the bottom plate. The edges of the upper and lower elastic membranes are fixedly connected to the corresponding hole walls of the forming hole respectively. A holding cavity for containing the carrying liquid is formed between the upper and lower elastic membranes. The holding cavity has a liquid inlet and outlet. The liquid inlet and outlet are connected to a liquid pressurizing device through a liquid channel to add a carrying liquid with a certain pressure into the holding cavity. A plurality of push pins extending along the axial direction of the forming hole are arranged in parallel below the lower elastic membrane. Each push pin is respectively provided in one-to-one correspondence with each partition of the lower surface of the forming pin. Each push pin is connected to a micro hydraulic rod to adjust the height of the push pin, and also includes a surface scanning radar that can be extended to the bottom of the forming pin to scan the height average of each partition of the lower surface of the punch, thereby controlling each micro hydraulic rod to adapt and adjust the height.

2. The hookah charcoal stamping and forming equipment according to claim 1, characterized in that: The top of the push column is a spherical surface.

3. The hookah charcoal stamping and forming equipment according to claim 1, characterized in that: The carrying liquid is hydraulic oil, and the liquid pressurizing device includes a hydraulic pump.

4. The hookah charcoal stamping and forming device according to claim 1, characterized in that: The upper elastic membrane and the lower elastic membrane are both double-layer composite structures of nitrile rubber and NiBe2.

5. The hookah charcoal stamping and forming equipment according to claim 1, characterized in that: The material of the bottom plate is Ni42CrTiAlMoCu, and the thickness of the bottom plate is greater than the thickness of the upper and lower elastic membranes.

6. The hookah charcoal stamping and forming equipment according to claim 1, characterized in that: The cross-sections of the forming holes and the forming columns are square. There are nine push columns arranged in a nine-square grid. The lower surface of the corresponding forming column is divided into nine partitions arranged in a nine-square grid.

7. The hookah charcoal stamping and forming equipment according to claim 1, characterized in that: The bearing liquid is synthetic hydrocarbon type hydraulic oil.

8. The hookah charcoal stamping and forming equipment according to claim 1, characterized in that: The area scanning radar is driven to move in an extended and retracted manner by a horizontally arranged electric push rod.

9. The hookah charcoal stamping and forming equipment according to claim 1, characterized in that: The system comprises a controller which is respectively connected with the surface scanning sensor and the control modules of each micro hydraulic rod so as to control each micro hydraulic rod to extend or retract a certain distance after calculation according to the feedback of the surface scanning sensor.

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