Dough sheet stretcher

Abstract

The utility model relates to a dough sheet stretcher which comprises a machine frame and a driving motor, two wheel belt stretching mechanisms are installed on the machine frame, each wheel belt stretching mechanism comprises a driving middle idler wheel, at least one driving side idler wheel is installed on the two sides of each driving middle idler wheel in a rotating mode respectively, and the centers of the driving middle idler wheels and the centers of the driving side idler wheels are located on the same arc. The driving middle rotating shaft and the adjacent driving side rotating shaft are in transmission connection through a joint coupling; the device further comprises a driven middle roller, driven side rollers are rotationally installed on the two sides of the driven middle roller respectively, the driven side rollers and the corresponding driving side rollers are located in the same plane, the driven middle roller and the driving middle roller are connected through stretching belts, and the driven side rollers and the corresponding driving side rollers are connected through stretching belts. The vertical distance between the driven side rollers and the driven middle rollers at the two ends of the same stretching belt is smaller than the vertical distance between the driving side rollers and the driving middle rollers. The transmission device is simple in transmission structure, low in production cost, high in efficiency, low in noise and easy to install and operate.

Description

Technical Field

[0001] The utility model relates to the technical field of cooking machinery, in particular to a dough sheet stretching machine. Background Art

[0002] In food processing and production, some pasta such as pie crusts need to be stretched manually. In batch production, the workload of manual operation is large and very physically demanding. The traditional manual stretching method can no longer meet the requirements of large-scale production.

[0003] The dough stretching machines currently sold on the market, such as the automatic dough stretching equipment disclosed in CN201922220268.7, are connected to the auxiliary rotating rod through a gear disk. The auxiliary rotating rod also rotates. The auxiliary rotating rod is in a counterclockwise rotating state. When the dough contacts the auxiliary rotating rod rotating counterclockwise, it will be pulled and unfolded by the auxiliary rotating rod, and the dough is further unfolded to achieve the effect of dough stretching. The equipment can only stretch the dough in the length direction but not in the width direction, and only uses the rotation of the auxiliary rotating rod for stretching. The stretching efficiency is low, which makes the production efficiency low, and this unidirectional stretching method cannot meet the processing requirements of pie crust, etc., and has a small scope of application. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a dough sheet stretching machine with a simple transmission structure and low production cost. The machine can realize double stretching of the dough sheet in the length direction and the width direction, has high stretching efficiency, low operating noise, and is easy to install and operate.

[0005] The utility model is realized through the following technical solutions:

[0006] Provided is a dough sheet stretching machine, comprising a frame and a driving motor, wherein two belt stretching mechanisms are arranged in parallel up and down and are connected to the driving motor by transmission, wherein a gap between the two belt stretching mechanisms forms a dough sheet stretching channel, wherein the belt stretching mechanism comprises an active middle roller rotatably mounted at one end of the frame through an active middle rotating shaft and a bearing, wherein at least one active side roller is rotatably mounted on both sides of the active middle roller through an active side rotating shaft and a bearing, wherein the centers of the active middle roller and each active side roller are located on the same arc, and the active middle rotating shaft and adjacent active side rotating shafts are connected by transmission through a joint coupling; It includes a driven middle roller which is rotatably installed at the other end of the frame through a driven middle rotating shaft and a bearing and is located in the same plane as the active middle roller. The driven side rollers on both sides of the driven middle roller are rotatably installed with the same number as the active side rollers through the driven side rotating shaft and the bearing. The driven side rollers and their corresponding active side rollers are located in the same plane. The driven middle roller and the active middle roller, and the driven side roller and its corresponding active side roller are all connected through a stretching belt transmission. The vertical spacing between the driven side rollers and the driven middle rollers at both ends of the same stretching belt is smaller than the vertical spacing between the active side rollers and the active middle roller.

[0007] Furthermore, a bracket plate is installed at the active side roller at the edge corresponding to one side in the length direction of the frame, and a driving gear and a driving sprocket are installed in sequence at the end of the active side rotating shaft located below away from the joint coupling, and a driven gear meshing with the driving gear is installed at the end of the active side rotating shaft located above away from the joint coupling, and a motor sprocket is installed on the driving shaft of the driving motor, and the motor sprocket and the driving sprocket are connected by a chain transmission.

[0008] The driving motor drives the active sprocket to rotate through the motor sprocket, and the active sprocket drives the active gear and the active side shaft to rotate, and then the active gear engages with the driven gear, so that the driving motor drives the upper and lower belt stretching mechanisms to run synchronously at the same time to complete the tensioning of the dough sheet.

[0009] Furthermore, support rollers for supporting the stretching belt and passively rotating with the stretching belt are installed at intervals in the stretching belt between the active middle roller and the driven middle roller and in the stretching belt between the active side roller and the driven side roller in the frame.

[0010] Furthermore, a bearing is built into the center of the supporting roller, and is rotatably mounted on a roller support shaft. The roller support shaft is fixed to a roller fixing plate through a nut, and the roller fixing plate is fixed to the frame through bolts.

[0011] The supporting roller is rotatably mounted on the roller supporting shaft through a bearing, and is positioned and mounted on the frame through a roller fixing plate, so as to support the stretching belt and ensure the stability of the dough piece when the rope is pulled.

[0012] Further, the driven-side rollers located at both side edges are rotatably mounted on the roller support shafts through bearings. The roller support shafts are fixed on the roller mounting and adjusting plates through nuts, and the roller mounting and adjusting plates are movably connected to the frame through adjusting bolts.

[0013] The driven-side rollers are mounted on the roller mounting and adjusting plates through roller support bearings, and the overall position on the frame can be adjusted through the adjusting bolts, thereby facilitating the flexible adjustment of the length and tightness of the stretching belt.

[0014] Further, a feeding face roller is rotatably mounted at one end of the frame where the driven middle roller is installed, and a discharging face roller is rotatably mounted at the other end of the frame where the driving middle roller is installed.

[0015] By respectively arranging the feeding face roller and the discharging face roller at both ends of the frame, it is convenient to support the dough sheets entering and discharging from the equipment, ensuring the stability of conveying and processing.

[0016] Further, a protective cover covering the two belt stretching mechanisms is also installed on the frame.

[0017] By covering the protective cover outside the belt stretching mechanism, on the one hand, the protective cover plays a role in dust prevention to ensure processing hygiene, and on the other hand, the protective cover can cover the stretching belt, rollers and transmission mechanism to play a role in beautification.

[0018] Advantages of the utility model:

[0019] In the utility model, through the cooperation of the driving motor and the sprocket and gear transmission structure, the upper and lower two belt stretching mechanisms can be driven to run synchronously, so that the dough sheets entering the stretching channel are gradually stretched under the action of the stretching belt. Since the dough sheets enter the upper and lower two rotating belt stretching mechanisms, the dough sheets are not only stretched in the length direction during the conveying process, but also due to the obliquely diffused arrangement of the stretching belt, the stretching belt can drive the dough sheets to be stretched in the width direction, thereby realizing the transverse and longitudinal stretching of the dough sheets and improving the stretching efficiency.

[0020] The utility model is simple to operate. Only by connecting the dough sheets into the dough sheet stretching channel and without additional other operations, the stretching work of the dough sheets can be completed, reducing the technical level requirements of production workers, realizing the automatic stretching of the dough sheets and improving the stretching efficiency.

[0021] In the utility model, only one driving motor, in cooperation with the transmission mode of sprocket chain and gear meshing, drives the driven middle roller and the driven side roller to rotate through the driving middle roller, the driving side roller and the stretching belt, realizing the stretching of the dough sheets. The transmission structure is simple, the production cost is low, the transmission is stable, the stretching efficiency is high, the noise is low, it is easy to install and operate, and it is convenient for users to maintain and clean, meeting the hygienic requirements of food in modern society. Description of the drawings

[0022] Figure 1 It is a structural schematic diagram of the utility model.

[0023] Figure 2 It is a top view of the utility model.

[0024] Figure 3 for Figure 2 Enlarged schematic diagram at point A in the middle.

[0025] Figure 4 for Figure 1 B-B section view.

[0026] Figure 5 for Figure 2 C-C section view.

[0027] Figure 6 for Figure 1 D-D section view.

[0028] As shown in the figure:

[0029] 1 frame, 2 supporting roller, 3 roller mounting adjustment plate, 4 adjusting bolt, 5 protective cover, 6 active side roller 7, chain, 8 driving motor, 9 inlet roller, 10 stretching belt, 11 driven side roller, 12 driven middle roller, 13 outlet roller, 14 joint coupling, 15 active side rotating shaft, 16 active middle roller, 17 bracket plate, 18 bearing seat, 19 roller fixing plate, 20 active sprocket, 21 active gear, 22 roller mounting adjustment plate, 23 adjusting bolt, 24 nut, 25 roller supporting shaft, 26 bearing, 27 roller fixing plate, 28 motor sprocket, 29 dough sheet stretching channel, 30 active middle rotating shaft, 31 driven gear. DETAILED DESCRIPTION

[0030] In order to clearly illustrate the technical features of this solution, this solution is described below through a specific implementation method.

[0031] A dough sheet stretching machine includes a frame 1 and a driving motor 8. Two belt stretching mechanisms arranged in parallel and connected to the driving motor are installed on the frame 1. A protective cover 5 is also installed on the frame 1 to cover the two belt stretching mechanisms. The frame 1 is rotatably mounted with a dough inlet roller 9 at one end where a driven middle roller 12 is installed, and the frame 1 is rotatably mounted with a dough outlet roller 13 at the other end where an active middle roller 16 is installed.

[0032] The dough inlet roller 9 is installed at the front end of the frame 1 and fixed by the roller fixing plate 19, and the roller fixing plate 19 is installed on the frame 1. The dough inlet roller 9 plays the role of carrying and conveying the dough to be stretched. The dough outlet roller 13 is installed at the rear end of the frame 1 and fixed by the roller fixing plate 19, and the roller fixing plate 19 is installed on the frame 1. The dough outlet roller 13 plays the role of carrying and conveying the stretched dough to the next processing step.

[0033] The gap between the two wheel belt stretching mechanisms forms a dough sheet stretching channel 29. The wheel belt stretching mechanism includes an active middle roller 16 rotatably mounted at one end of the frame 1 through an active middle rotating shaft 30 and a bearing 26. At least one active side roller 6 is rotatably mounted on both sides of the active middle roller 16 through an active side rotating shaft 15 and a bearing 26. The centers of the active middle roller 16 and each active side roller 6 are located on the same arc. The active middle rotating shaft 30 and the adjacent active side rotating shafts 15 are connected by a joint coupling 14; the joint coupling 14 enables the power on the active side rotating shaft 15 and the active middle rotating shaft 30 to achieve non-linear connection, thereby driving the active middle roller 16 and the active side roller 6 to rotate. The width of the dough sheet stretching is composed of multiple joint couplings 14, active middle rollers 16 and active side rollers 6. The rotation of the active middle roller 16 and the active side rollers 6 pulls the stretching belt 10 to run, and when the stretching belt 10 runs, the dough sheet can be stretched to a certain width.

[0034] It also includes a driven middle roller 12 which is rotatably mounted at the other end of the frame 1 through a driven middle rotating shaft and a bearing 26 and is located in the same plane as the active middle roller 16. The driven side rollers 11, which are the same number as the active side rollers 6, are rotatably mounted on both sides of the driven middle roller 12 through a driven side rotating shaft and a bearing. The driven side rollers 11 and their corresponding active side rollers 6 are located in the same plane. The driven middle rollers 12 and the active middle rollers 16, and the driven side rollers 11 and their corresponding active side rollers 6 are all connected through a stretching belt 10 for transmission. The vertical spacing between the driven side rollers 11 and the driven middle rollers 12 at both ends of the same stretching belt 12 is smaller than the vertical spacing between the active side rollers 6 and the active middle rollers 16.

[0035] On one side corresponding to the edge in the length direction of the frame 1, a support plate 17 is installed on the driving-side roller 6. At the end of the driving-side rotating shaft 15 located below, a driving gear 21 and a driving sprocket 20 are successively installed away from the joint coupling 14. At the end of the driving-side rotating shaft located above, a driven gear 31 meshing with the driving gear 21 is installed away from the joint coupling 14. A motor sprocket 28 is installed on the driving shaft of the driving motor 8, and the motor sprocket 28 and the driving sprocket 20 are connected by a chain 7. The driving motor 8 is a speed reducer, and its power is transmitted through the transmission of the motor sprocket 28, the chain 7, and the driving sprocket 20, causing the driving-side rotating shaft 15 to rotate, driving the driving gear 21 to rotate, and being transmitted to the driving-side rotating shaft above through the meshing of the driving gear 21 and the driven gear 31, thereby driving the driving-side roller above to rotate, so that the driving motor 8 can drive the upper and lower belt stretching mechanisms to operate simultaneously, and the stretching of the dough sheet is realized by the circular operation of the stretching belt 10.

[0036] Inside the frame 1, support rollers 2 for supporting the stretching belt 10 and rotating passively with the stretching belt 10 are respectively and spacedly installed inside the stretching belt 10 between the driving middle roller 16 and the driven middle roller 12 and inside the stretching belt 10 between the driving-side roller 6 and the driven-side roller 11. A bearing 26 is built in the center of the support roller 2, and it is rotatably installed on the roller support shaft 25. The roller support shaft 25 is fixed on the roller fixing plate 27 by a nut 24, and the roller fixing plate 27 is fixed on the frame 1 by bolts.

[0037] In order to facilitate the adjustment of the length and tightness of the stretching belt 10, the driven-side rollers 11 at both side edges are rotatably installed on the roller support shafts 25 through bearings 26. The roller support shafts 25 are fixed on the roller installation adjustment plates 22 by nuts, and the roller installation adjustment plates 22 are movably connected to the frame 1 through adjusting bolts 23.

[0038] The usage method of the present utility model:

[0039] First, start the driving motor 8. The operation of the driving motor 8 drives the motor sprocket 28 to rotate. The rotation of the motor sprocket 28 transmits power to the driving sprocket 20 through the chain 7, causing the driving sprocket 20 to rotate. The rotation of the driving sprocket 20 drives the driving-side rotating shaft 15 below to rotate. The rotation of the driving-side rotating shaft 15 drives the driving gear 21 and the driving-side roller 6 below to rotate. The rotation of the driving gear 21 drives the driven gear 31 to transmit power, causing the driving-side rotating shaft 15 above to rotate, and then driving the driving-side roller 6 above to rotate.

[0040] The driving side rotating shaft 15 at the edge rotates, and is transmitted through the joint coupling 14 to drive the driving middle rotating shaft 30 and other driving side rotating shafts 15 to rotate together, driving the driving middle roller 16 and the driving side roller 6 to rotate. Furthermore, the stretching belts 10 between the driving middle roller 16 and the driven middle roller 12 and between the driving side roller 6 and the driven side roller 11 rotate and run. The dough sheet is supported by the dough inlet idler roller 9 and then enters the dough sheet stretching channel 29, and is gradually stretched and widened in cooperation with the rotational stretching action of the stretching belt 10. The dough sheet stretched to a certain width is conveyed to the next process by the dough outlet idler roller 13.

[0041] Certainly, the above description is not limited to the above examples. The technical features not described in the present utility model can be realized by or adopted the prior art, and will not be elaborated here; the above embodiments and the accompanying drawings are only used to illustrate the technical solutions of the present utility model and are not intended to limit the present utility model. The present utility model has been described in detail with reference to the preferred embodiments. Those of ordinary skill in the art should understand that any changes, modifications, additions or substitutions made by those of ordinary skill in the art within the scope of the essence of the present utility model do not depart from the purpose of the present utility model and should also fall within the scope of the claims of the present utility model.

Claims

1. A dough sheet stretching machine, comprising a frame and a driving motor, characterized in that: The frame is provided with two belt stretching mechanisms which are arranged in parallel up and down and are connected to the driving motor by transmission. The gap between the two belt stretching mechanisms forms a dough sheet stretching channel. The belt stretching mechanism includes an active middle roller which is rotatably mounted at one end of the frame through an active middle rotating shaft and a bearing. At least one active side roller is rotatably mounted on both sides of the active middle roller through an active side rotating shaft and a bearing. The centers of the active middle roller and each active side roller are located on the same arc. The active middle rotating shaft and the adjacent active side rotating shafts are connected by a joint coupling. The mechanism also includes a driven middle rotating shaft and a driven side rotating shaft. The driven middle roller is rotatably mounted on the bearing at the other end of the frame and is located in the same plane as the active middle roller. The driven side rollers with the same number as the active side rollers are rotatably mounted on both sides of the driven middle roller through the driven side rotating shaft and the bearing. The driven side rollers and their corresponding active side rollers are located in the same plane. The driven middle roller and the active middle roller, as well as the driven side roller and its corresponding active side roller are connected through a tension belt transmission. The vertical spacing between the driven side rollers and the driven middle rollers at both ends of the same tension belt is smaller than the vertical spacing between the active side rollers and the active middle roller.

2. The dough sheet stretching machine according to claim 1, characterized in that: A bracket plate is installed at the active side roller at the corresponding edge of one side in the length direction of the frame, and a driving gear and a driving sprocket are installed in sequence at the end of the active side rotating shaft located below away from the joint coupling, and a driven gear meshing with the driving gear is installed at the end of the active side rotating shaft located above away from the joint coupling, a motor sprocket is installed on the driving shaft of the driving motor, and the motor sprocket and the driving sprocket are connected by a chain transmission.

3. The dough sheet stretching machine according to claim 1, characterized in that: Support rollers for supporting the stretching belt and passively rotating with the stretching belt are installed at intervals in the stretching belt between the active middle roller and the driven middle roller and between the active side roller and the driven side roller in the frame.

4. The dough sheet stretching machine according to claim 3, characterized in that: The center of the supporting roller is provided with a built-in bearing and is rotatably mounted on a roller supporting shaft. The roller supporting shaft is fixed to a roller fixing plate through a nut, and the roller fixing plate is fixed to a frame through bolts.

5. The dough sheet stretching machine according to claim 1, characterized in that: The driven side rollers located at the edges of both sides are rotatably mounted on the roller support shaft through bearings. The roller support shaft is fixed on the roller installation adjustment plate through nuts. The roller installation adjustment plate is movably connected to the frame through adjusting bolts.

6. The dough sheet stretching machine according to claim 1, characterized in that: A surface-incoming roller is rotatably installed at one end of the frame where the driven middle roller is installed, and a surface-outgoing roller is rotatably installed at the other end of the frame where the active middle roller is installed.

7. The dough sheet stretching machine according to claim 1, characterized in that: The frame is also provided with a protective cover for covering the two belt stretching mechanisms.

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