Churro dough extruder

Abstract

The present invention relates to a churros dough extruder comprising: a dough container having a receiving portion for receiving dough and an opening formed at the top, and an extrusion nozzle formed at the bottom portion for discharging dough; a cover coupled to the opening at the top of the dough container; an extrusion unit comprising a lifting rod coupled to the cover and inserted into the interior of the dough container, having a rack gear formed vertically on its outer surface, and a pressure plate connected to the lower end of the lifting rod and coupled to the interior of the dough container; an operating lever shaft coupled through to a gearbox formed at the top of the cover, and an operating lever coupled to one end of the operating lever shaft and provided on the outer side of the cover. A drive unit comprising: a drive gear connected to the operating lever shaft and rotating by providing rotational force through the rotation of the operating lever; a reduction gear connected to the drive gear in a reduction gear ratio and rotating in a reduction manner; a pinion gear provided on a concentric axis with the reduction gear and having a smaller diameter and fewer teeth than the reduction gear; and a rack gear that meshes with the pinion gear, is driven to move up and down in a vertical direction, and has a pressure plate provided at its end; wherein the reduction gear is formed on a concentric axis and is composed of a first gear, a second gear with fewer teeth than the first gear, and a third gear with fewer teeth than the second gear based on the number of teeth, and a gear selection unit that is selectively connected to any one of the first gear, the second gear, and the third gear, and is connected to the drive gear to select a gear ratio.

Description

Technology Field

[0001] The present invention relates to a churros dough extruder, and more specifically, to a churros dough extruder that consistently extrudes flour dough. Background Technology

[0002] Generally, churros are a traditional Spanish dish made by shaping flour dough into long sticks and frying them in oil. In Korea, they are mainly sold as snacks in busy areas where many people gather, such as shopping districts and amusement parks.

[0003] To make such churros, a dough for churros is prepared and extruded using an extruder so that the cross-section of the dough can be extruded into a star shape, and the extruded dough is then placed in oil and fried to make churros products.

[0004] FIG. 5 shows a conventional extruder for extruding dough for churros, in which a pinion (3) is directly connected to a handle (1) and the pinion (3) is engaged with a rack gear (5).

[0005] At this time, a plate (7) that applies pressure for extruding the dough is attached to the rack gear (5), so that the dough can be extruded as the rack gear (5) moves.

[0006] However, since the rotational force of the handle in such extruders is transmitted to the pressure plate solely through the rack and pinion, there is a problem in that a large amount of force is required to rotate the handle, and in this case, the density of the dough decreases, resulting in a poor texture of the finished product. Prior art literature

[0007] Korean Patent Application No. 10-2022-0083964 The problem to be solved

[0008] The present invention was devised to resolve the problems of the prior art, and aims to provide a churros dough extruder that can discharge an appropriate amount of dough with a small amount of force, discharge the dough while maintaining its shape and viscosity in an optimal state, control the discharge amount of dough, and allow the discharged dough to be cut to a certain length in conjunction with the downward operation of the rack gear. means of solving the problem

[0009] The objective of the present invention described above is to provide: a dough container having a receiving portion for receiving dough and an opening formed at the top, and an extrusion nozzle formed at the bottom portion for discharging dough; a cover coupled to the opening at the top of the dough container; an extrusion portion composed of a lifting rod coupled to the cover and inserted into the interior of the dough container, having a rack gear formed vertically on its outer surface, and a pressure plate connected to the lower end of the lifting rod and coupled to the interior of the dough container; an operating lever shaft coupled through to a gearbox formed at the top of the cover, and an operating lever coupled to one end of the operating lever shaft and provided on the outer side of the cover. This is achieved by a churros dough extruder comprising: a driving gear connected to the operating lever shaft and rotating by providing rotational force through the rotation of the operating lever; a reduction gear connected to the driving gear and rotating at a reduction gear ratio; a pinion gear provided on a concentric axis with the reduction gear and having a smaller diameter and fewer gear teeth than the reduction gear; a rack gear that is engaged with the pinion gear and driven to move up and down in a vertical direction, and has a pressure plate provided at its end; wherein the reduction gear is formed on a concentric axis and is composed of a first gear, a second gear with fewer gear teeth than the first gear, and a third gear with fewer gear teeth than the second gear based on the number of gear teeth, and a gear selection unit that is selectively connected to any one of the first gear, the second gear, and the third gear, and is connected to the driving gear to select the gear ratio.

[0010] The above gear selection unit is positioned between a driving gear and a reduction gear, and is characterized by including a transmission gear in which one side is gear-coupled to the driving gear and the other side is gear-coupled to any one of the first, second, or third gears of the reduction gear; and a transmission drive unit that moves the transmission gear.

[0011] The above transmission drive unit

[0012] A shift housing having a through-connection of an operating lever shaft coupled to an elongated hole formed transversely in a gearbox, and a cassette part having a drive gear and a shift gear coupled thereto, which are rotatably coupled inside the shift housing;

[0013] A guide rail formed inside the above gearbox, accommodating the above transmission housing and guiding the forward and backward movement of the cassette part;

[0014] A bearing box coupled to the outer circumference of the operating lever shaft of the above-mentioned transmission housing;

[0015] It is characterized by including a gear stage fixing part comprising a stopper ball formed on the inner circumference of the bearing box and a plurality of stopper grooves formed on the outer circumference of the operating lever shaft to which the stopper ball is coupled.

[0016] A cutting part that is rotatably hinged to the lower part of the dough container, is linked to a lifting rod, and cuts the dough discharged from the extrusion nozzle when the lifting rod descends;

[0017] The above cutting part

[0018] A transverse bar formed horizontally on the outer surface of the lifting bar, and

[0019] A lifting bar having its upper end connected to the above-mentioned transverse bar and formed parallel to the lifting bar, with a driving rack gear formed on the outer surface of the lower end, and

[0020] A cutting housing formed on the lower outer side of the above dough container and having an opening formed therein for inserting the driving rack gear of the lifting bar, a driven gear axially coupled in the transverse direction to one side of the inside of the cutting housing and meshing with the driving rack gear of the lifting bar, and a vertical bevel gear formed coaxially with the driven gear,

[0021] A horizontal bevel gear that is horizontally axially coupled to the bottom surface of the cutting housing and meshes with the vertical bevel gear, and

[0022] It is characterized by including a cutter shaft coupled to the center hole of the horizontal bevel gear and penetrating the bottom surface of the cutting housing, and a cutting blade having one end coupled to the cutter shaft and positioned at the bottom of the extrusion nozzle.

[0023] It includes a return means for rotating the cutting blade in the other direction so that it returns to its original state after rotating it in one direction; and

[0024] The above return means comprises a unidirectional clutch bearing coupled to the center hole of a horizontal bevel gear and coupled to a cutter shaft, and

[0025] It is characterized by including a torsion spring that is fitted onto the outer surface of the cutter shaft, with one end fixed to the cutting blade and the other end fixed to the bottom surface of the horizontal bevel gear to return the cutting blade. Effects of the invention

[0026] According to the present invention, the dough can be discharged in appropriate amounts with minimal force, the dough is discharged while maintaining its shape and viscosity in an optimal state, the discharge volume can be controlled, and the discharged dough can be cut to a certain length in conjunction with the downward operation of the rack gear. Brief explanation of the drawing

[0027] FIG. 1 is a perspective view of a churros dough extruder according to the present invention, FIG. 2 is a cross-sectional view of a churros dough extruder according to the present invention, FIG. 3 is a perspective view of the ‘driving part’ of a churros dough extruder according to the present invention. FIG. 4 is a drawing of a ‘gear selection unit’ of a churros dough extruder according to the present invention. FIG. 5 is a perspective view of a 'speed drive unit' of a churros dough extruder according to the present invention. FIG. 6 is a plan view showing the shifting operation of the shift drive unit in FIG. 5. FIG. 7 is a perspective view showing the ‘cutting section’ of a churros dough extruder according to the present invention. FIG. 8 is a front view showing the ‘cutting section’ of a churros dough extruder according to the present invention. FIG. 9 is a cross-sectional view showing a ‘return means’ of a churros dough extruder according to the present invention. Specific details for implementing the invention

[0028] Preferred embodiments are described in detail below based on the attached drawings.

[0029] The embodiments described below are intended to provide a detailed description sufficient for a person skilled in the art to easily practice the invention, and do not imply that the technical scope and concept of the invention are limited thereby.

[0030] In addition, the size or shape of the components shown in the drawings may be exaggerated for clarity and convenience of explanation, and terms specifically defined in consideration of the configuration and operation of the present invention may vary according to the intent or convention of the user or operator, and it should be noted that the definitions of such terms must be based on the content throughout this specification.

[0031] Among the attached drawings, FIG. 1 is a perspective view of a churros dough extruder according to the present invention, FIG. 2 is a cross-sectional view of a churros dough extruder according to the present invention, FIG. 3 is a perspective view of a ‘driving unit’ of a churros dough extruder according to the present invention, FIG. 4 is a drawing of a ‘gear selection unit’ of a churros dough extruder according to the present invention, FIG. 5 is a perspective view of a ‘speed drive unit’ of a churros dough extruder according to the present invention, FIG. 6 is a plan view showing the speed operation of the speed drive unit in FIG. 5, FIG. 7 is a perspective view showing a ‘cutting unit’ of a churros dough extruder according to the present invention, FIG. 8 is a front view showing a ‘cutting unit’ of a churros dough extruder according to the present invention, and FIG. 9 is a cross-sectional view showing a ‘return means’ of a churros dough extruder according to the present invention.

[0032] The churros dough extruder according to the present invention is,

[0033] A dough container (2) having a receiving portion (20) for receiving dough, an opening formed at the top, and an extrusion nozzle (21) formed at the bottom for discharging dough;

[0034] A cover (23) coupled to the upper opening of the dough container (2);

[0035] An extrusion part (3) composed of a lifting rod (32) that is coupled to the above-mentioned cover (23) and inserted into the interior of the dough container (2), with a rack gear (320) formed vertically on its outer surface, and a pressure plate (34) that is connected to the lower end of the lifting rod (32) and coupled to the interior of the dough container (2);

[0036] An operating lever shaft (42) that is coupled through to a gearbox (230) formed on the upper part of the above cover (23), and an operating lever (4) coupled to one end of the operating lever shaft (42) and provided on the outer side of the cover (23);

[0037] A drive unit (5) comprising: a drive gear (52) connected to the above-mentioned operating lever shaft (42) and rotated by providing rotational force through the rotation of the operating lever (4); a reduction gear (54) connected to the above-mentioned drive gear (52) in a reduction gear ratio and rotated at a reduction speed; and a pinion gear (55) provided on a concentric axis with the above-mentioned reduction gear (54) and having a smaller diameter and fewer gear teeth than the reduction gear (54); a rack gear (320) which is engaged with the above-mentioned pinion gear (55) and driven to move up and down in a vertical direction, and which has a pressure plate (34) provided at its end.

[0038] The above reduction gear (54) is formed on a concentric axis and is composed of a first gear (G1), a second gear (G2) with fewer teeth than the first gear (G1), and a third gear (G3) with fewer teeth than the second gear (G2), based on the number of gear teeth.

[0039] It is configured to include a gear selection unit (300) that is selectively connected to any one of the first gear (G1), second gear (G2), and third gear (G3), and is connected to a driving gear (52) to select a gear ratio.

[0040] The dough container (2) is formed in a cylindrical shape, and a receiving portion (20) for receiving dough is formed inside, an opening is formed at the top, and an extrusion nozzle (21) for discharging dough is formed at the bottom.

[0041] The cover (23) is connected to the upper opening of the dough container (2) and is fastened by a screw so that it can be opened and closed as needed.

[0042] A gearbox (230) for accommodating a drive unit (5) is formed on the upper part of the cover (23).

[0043] The extrusion part (3) is fixed to the lower rack gear (320) of the lifting rod (32) that raises and lowers the pressure plate (34) and the pressure plate (34) inserted into the dough container (2), and when the lifting rod (32) is lowered, the pressure plate (34) is lowered to pressurize the dough contained inside the dough container (2) and discharge it through the extrusion nozzle (21).

[0044] An operating lever shaft (42) is connected to a gearbox (230) to lower the pressure plate (34) of the extrusion part (3), and a driving part (5) is connected to the operating lever shaft (42), and the lifting rod (32) is raised or lowered by receiving the end rotational force of the driving part (5).

[0045] An operating lever (4) is coupled to the end of the operating lever shaft (42). When the operating lever (4) is rotated clockwise and the operating lever shaft (42) is rotated, the driving gear (52) connected to the operating lever shaft (42) rotates, and the reduction gear (54) and pinion gear (55) that are gear-coupled to the driving gear (52) rotate.

[0046] Since the rack gear (320) coupled to the pinion gear (55) is lowered, the lifting rod (32) on which the rack gear (320) is formed is lowered.

[0047] As the lifting rod (32) descends, the pressure plate (34) connected to the lower end of the lifting rod (32) descends, causing the dough inside the dough container (2) to be discharged through the lower extrusion nozzle (21).

[0048] The driving unit (5) includes a driving gear (52) connected to an operating lever shaft (42), a reduction gear (54) engaged with the driving gear (52), and a pinion gear (55) formed on the reduction gear (54). The pinion gear (55) is gear-coupled to the rack gear (320) of the lifting rod (32), thereby transmitting the rotational force of the driving gear (52) to the pinion gear (55) at the end, and the lifting rod (32) can be operated to be raised and lowered by the pinion gear (55) driving the rack gear (320) up and down.

[0049] According to the disclosed embodiment, the driving gear (52) and the reduction gear (54) have a reduction gear ratio of 2:1.

[0050] That is, if the number of teeth of the driving gear (52) is 13, the number of teeth of the reduction gear (54) can be 26.

[0051] The reduction gear (54) and the pinion gear (55) have a gear tooth ratio of 2:1.

[0052] If the number of teeth of the reduction gear (54) is 26, the number of teeth of the pinion gear (55) may be 13.

[0053] It should be noted that the above gear ratio and number of teeth are merely examples and are not strictly limited thereto, and that the gear ratio or number of teeth may be increased or decreased as needed.

[0054] Meanwhile, according to the disclosed embodiment, the first gear (G1), second gear (G2), and third gear (G3) of the reduction gear (54) are formed with a differential number of gear teeth, and when the first gear (G1) has 26 teeth, the second gear (G2) can be formed with 18 teeth and the third gear (G3) with 12 teeth.

[0055] Accordingly, the gear selection unit (300) can adjust the rotational torque by selecting the first gear (G1) to the third gear (G3).

[0056] The above gear selection unit (300) is

[0057] A transmission gear (330) positioned between a driving gear (52) and a reduction gear (54), with one side meshed with the driving gear (52) and the other side meshed with one of the first gear (G1), second gear (G2), and third gear (G3) of the reduction gear (54);

[0058] It is configured to include a transmission drive unit (340) that moves the transmission gear (330).

[0059] The above transmission drive unit (340)

[0060] A transmission housing (352) having an operating lever shaft (42) that is coupled to an elongated hole (2302) formed transversely in a gearbox (230) and a cassette part (350) having a driving gear (52) and a transmission gear (330) coupled thereto, which are rotatably coupled inside the transmission housing (352);

[0061] A guide rail (360) formed inside the gearbox (230), accommodating the transmission housing (352), and guiding the forward and backward movement of the cassette part (350);

[0062] It is configured to include a bearing box (370) coupled to the outer surface of an operating lever shaft (42) coupled to a transmission housing (352) and coupled within an elongated hole (2302).

[0063] Therefore, when the operating lever shaft (42) is pulled and then moved laterally to one side, the cassette part (350) moves along the elongated hole (2302), and the transmission gear (330) is selectively engaged with the first gear (G1) to the third gear (G3).

[0064] It also includes a gear fixing part (380) comprising a stopper ball (382) formed on the outer surface of a bearing box (370) and a stopper groove (384) formed on the inner surface of an elongated hole (2302) to which the stopper ball (382) is coupled.

[0065] When the above operating lever shaft (42) is pulled, the stopper ball (382) can be inserted into the stopper groove (384) and temporarily fixed.

[0066] Referring to FIGS. 6 to 8, the device includes a cutting part (7) which is rotatably hinged to the lower part of the dough container (2), is linked to a lifting rod (32), and cuts the dough discharged from the extrusion nozzle (21) when the lifting rod (32) descends.

[0068] The cutting part (7)

[0069] A horizontal bar (72) formed horizontally on the outer surface of the lifting bar (32), and

[0070] A lifting bar (73) having its upper end connected to the above-mentioned transverse bar (72) and formed parallel to the lifting bar (32), with a driving rack gear (71) formed on the outer surface of the lower end, and

[0071] A cutting housing (74) formed on the lower outer side of the dough container (2) and having an opening formed therein for inserting the driving rack gear (71) of the lifting bar (73), a driven gear (75) axially coupled in the transverse direction to one side of the inner side of the cutting housing (74) and meshing with the driving rack gear (71) of the lifting bar (73), and a vertical bevel gear (76) formed coaxially with the driven gear (75),

[0072] A horizontal bevel gear (77) that is horizontally axially coupled to the bottom surface of the cutting housing (74) and meshed with the vertical bevel gear (76), and

[0073] It is configured to include a cutter shaft (782) that is coupled to the center hole of the horizontal bevel gear (77) and penetrates the bottom surface of the cutting housing (74), and a cutting blade (78) that has one end coupled to the cutter shaft (782) and is positioned at the bottom of the extrusion nozzle (21).

[0074] When the lifting bar (73) is lowered in conjunction with the lowering of the lifting rod (32), the driving rack gear (71) rotates the driven gear (75), and the vertical bevel gear (76) formed on the driven gear rotates along with it.

[0075] When the vertical bevel gear (76) rotates, the horizontal bevel gear (77) rotates, and the cutting blade (78) connected thereto rotates to cut the dough.

[0076] It includes a return means (8) for rotating the cutting blade (78) in the other direction so that it returns to its original state after rotating it in one direction.

[0077] The above return means (8) is coupled to the center hole (770) of the horizontal bevel gear (77) and to a one-way clutch bearing (82) to which the cutter shaft (782) is coupled, and

[0078] It is configured to include a torsion spring (84) that is fitted onto the outer surface of the cutter shaft (782), with one end fixed to the cutting blade (78) and the other end fixed to the bottom surface of the horizontal bevel gear (77) to return the cutting blade (78).

[0079] After the cutting blade (78) is rotated in one direction at a predetermined angle, it can be rotated in the reverse direction in conjunction with the return rotation of the torsion spring (84) to its original state and return to its original state.

[0080] Although described in relation to preferred embodiments, those skilled in the art will readily recognize that various modifications and variations are possible without departing from the essence and scope of the invention, and it is obvious that all such changes and modifications fall within the scope of the appended claims. Explanation of the symbols

[0081] 2 : Dough container 3 : Extrusion part 4 : Operating lever 5 : Driving part 7 : Cutting section 8 : Return means 20 : Receiving section 21 : Extrusion nozzle 23 : Cover 32 : Lifting bar 34: Pressure plate 42: Operating lever shaft 52 : Drive gear 54 : Reduction gear 55 : Pinion gear 73 : Lift bar 74 : Cutting housing 75 : Driven gear 76 : Vertical bevel gear 77 : Horizontal bevel gear 78 : Cutting blade 320 : Rack gear G1: 1st gear G2: 2nd gear G3 : 3rd gear 300 : Gear selector 330: Transmission gear 340: Transmission drive unit 350 : Cassette section 360 : Guide rail 370 : Bearing box

Claims

Claim 1 A dough container having a receiving portion for receiving dough and an opening formed at the top, and an extrusion nozzle formed at the bottom portion for discharging dough; a cover coupled to the opening at the top of the dough container; an extrusion unit composed of a lifting rod coupled to the cover and inserted into the interior of the dough container, having a rack gear formed vertically on its outer surface, and a pressure plate connected to the lower end of the lifting rod and coupled to the interior of the dough container; an operating lever shaft coupled through to a gearbox formed at the top of the cover, and an operating lever coupled to one end of the operating lever shaft and provided on the outer side of the cover. A drive unit comprising: a drive gear connected to the operating lever shaft and rotating by providing rotational force through the rotation of the operating lever; a reduction gear connected to the drive gear to form a reduction gear ratio and rotating at a reduced speed; a pinion gear provided on a concentric axis with the reduction gear and having a smaller diameter and fewer teeth than the reduction gear; and a rack gear that meshes with the pinion gear to be driven vertically up and down and has a pressure plate provided at its end; wherein the reduction gear is formed on a concentric axis and is composed of a first gear, a second gear with fewer teeth than the first gear, and a third gear with fewer teeth than the second gear based on the number of teeth, and a gear selection unit that is selectively connected to any one of the first gear, second gear, and third gear, and is connected to the drive gear to select a gear ratio; wherein the gear selection unit is disposed between the drive gear and the reduction gear, one side of which is gear-coupled to the drive gear, and the other side A transmission gear that is meshed with one of the first, second, or third gears of a reduction gear; and a transmission drive unit that moves the transmission gear; wherein the transmission drive unit comprises a transmission housing through which an operating lever shaft is coupled to an elongated hole formed transversely in a gearbox, and a cassette unit in which a drive gear and a transmission gear are coupled and which is rotatably coupled inside the transmission housing; a guide rail formed inside the gearbox that accommodates the transmission housing and guides the forward and backward movement of the cassette unit; and a bearing box coupled to the outer surface of the operating lever shaft of the transmission housing.A gear stage fixing part comprising a stopper ball formed on the inner circumference of the bearing box and a plurality of stopper grooves formed on the outer circumference of the operating lever shaft to which the stopper ball is coupled; and a cutting part rotatably hinged to the lower part of the dough container, linked to a lifting rod, and cutting dough discharged from an extrusion nozzle when the lifting rod descends; wherein the cutting part comprises a transverse bar formed horizontally on the outer circumference of the lifting rod, a lifting bar formed parallel to the lifting rod with its upper end coupled to the transverse bar and having a driving rack gear formed on the outer circumference of its lower end, a cutting housing formed on the lower outer side of the dough container with an opening formed to insert the driving rack gear of the lifting bar, a driven gear axially coupled transversely to one side of the interior of the cutting housing and meshing with the driving rack gear of the lifting bar, a vertical bevel gear formed coaxially with the driven gear, and a horizontally axially coupled to the bottom surface of the cutting housing and A churros dough extruder characterized by comprising a horizontal bevel gear coupled with a vertical bevel gear, a cutter shaft coupled to the center hole of the horizontal bevel gear and penetrating the bottom surface of a cutting housing, and a cutting blade having one end coupled to the cutter shaft and positioned at the bottom of an extrusion nozzle. Claim 2 delete Claim 3 delete Claim 4 delete Claim 5 A churros dough extruder according to claim 1, comprising: a return means for rotating the cutting blade in the other direction to return it to its original state after rotating it in one direction; wherein the return means comprises a one-way clutch bearing coupled to the center hole of a horizontal bevel gear and coupled to a cutter shaft, and a torsion spring fitted to the outer surface of the cutter shaft, having one end fixed to the cutting blade and the other end fixed to the bottom surface of the horizontal bevel gear to return the cutting blade.

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