Food blank angle adjustment mechanism

Abstract

The present invention discloses a food blank angle adjustment mechanism, comprising a table for supporting a covering skin; a fixing device for fixing to a first corner of the covering skin at a first station; a moving drive assembly connected to the fixing device for driving the fixing device to drag the covering skin to move to a second station; a rotating drive assembly connected to the fixing device, capable of driving the fixing device to rotate to a preset angle during the process of dragging the covering skin; the fixing device comprises a negative pressure suction device. The food blank angle adjustment mechanism of the present invention can adjust the angle of the food blank so that the first corner of the covering skin can be rotated to a specified angle to facilitate subsequent processing steps, and the covering skin has a high accuracy of angle adjustment, and the angle adjustment mechanism operates stably, which can avoid damage to the covering skin as much as possible and avoid throwing off the filling on the covering skin.

Description

[0001] This invention is a divisional application of a patent application for an invention named "Food blank corner adjustment method and corner adjustment mechanism", with an application date of January 15, 2020, an application number of 202010043977.7. Technical Field

[0002] This invention relates to a food blank corner adjustment method and a corner adjustment mechanism, belonging to the technical field of food processing machinery and equipment. Background Art

[0003] In the field of food processing, a forming machine is often used to process food. However, for rolled foods, such as spring rolls, due to the unique structural shape of the food, it is particularly difficult to achieve automated production. Its forming remains in a semi-automatic state, and only mechanical skin cutting and automatic stuffing can be achieved. The subsequent steps can only rely on manual folding and rolling, resulting in low efficiency and high personnel usage costs. On the other hand, the food specifications of manually rolled products are inconsistent, and it is impossible to ensure a high yield rate. During processing, first, the blanks are prepared, including the wrapping skin 901 and the filling 902. As Figure 1 shown, the sheet-like wrapping skin 901 is laid flat, and the filling 902 is placed on the wrapping skin 901. The filling 902 is located at a position close to one corner of the wrapping skin 901 to form a primary blank 91. If the corner of the wrapping skin 901 close to the filling 902 is further folded up to cover the filling 902, a secondary blank 92 is formed, as Figure 2 shown. Forming the primary blank 91 is relatively easy to achieve through existing technical means. However, before forming the secondary blank 92 by mechanical processing, the primary blank 91 needs to be rotated, or the wrapping skin 901 needs to be rotated first and then the filling 902 is placed to form the primary blank 91 for subsequent corner folding operations. For example Figure 3 shown, the primary blank 91 is conveyed forward by the first feeding device. When the corner of the wrapping skin 901 close to the filling 902 needs to be folded up by the subsequent flanging mechanism, it is necessary to make this corner close to the filling 902 (defining this corner as the first corner 901a) face the flanging mechanism, which requires rotating the wrapping skin 901 by a certain angle, such as 45°. The wrapping skin 901 can be rotated by using a negative pressure suction device to hold it, but the filling 902 on the wrapping skin 901 is easily thrown out during rotation. In addition, there is no better method to rotate the wrapping skin 901. Summary of the Invention

[0004] Therefore, the purpose of this invention is to provide a food blank corner adjustment method and a corner adjustment mechanism that can rotate the food blank.

[0005] To achieve the above purpose, a food blank corner adjustment method of this invention includes the following steps:

[0006] Fix the position of the fixing device at the first corner of the covering skin at the first station, so that the fixing device and the covering skin can move synchronously; drive the fixing device to move to the second station through the moving driving assembly so as to drag the covering skin; during the process of dragging the covering skin, drive the fixing device to rotate through the rotating driving assembly.

[0007] The present invention also provides a food blank angle adjustment mechanism, including:

[0008] A platen for supporting the covering skin;

[0009] A fixing device for fixing at the first corner of the covering skin at the first station;

[0010] A moving driving assembly connected to the fixing device for driving the fixing device to drag the covering skin to move to the second station;

[0011] A rotating driving assembly connected to the fixing device, capable of driving the fixing device to rotate to a preset angle during the process of dragging the covering skin.

[0012] Adopting the above technical solution, the food blank angle adjustment method and the angle adjustment mechanism of the present invention fix the fixing device at the position of the first corner of the covering skin, then drive the fixing device to move, and rotate the fixing device during the process of dragging the covering skin by the fixing device to move to the second station. Since the fixing device and the covering skin move synchronously, the covering skin rotates synchronously when the fixing device rotates. When the fixing device moves to the second station, the covering skin is dragged to the second station, and at the same time the covering skin also rotates to the specified angle. The food blank angle adjustment method and the angle adjustment mechanism of the present invention can adjust the angle of the food blank, so that the first corner of the covering skin can be rotated to the specified angle to facilitate subsequent processing procedures, and the accuracy of the angle adjustment of the covering skin is high, the angle adjustment mechanism operates stably, can avoid damaging the covering skin as much as possible, and avoid throwing off the filling on the covering skin. Description of the Drawings

[0013] Figure 1 It is a schematic structural diagram of a primary blank.

[0014] Figure 2 It is a schematic structural diagram of a secondary blank.

[0015] Figure 3 It is a schematic diagram of an embodiment of the food blank angle adjustment mechanism of the present invention.

[0016] Figure 4 It is Figure 3 The partial enlarged view of part A in

[0017] Figure 5Schematic diagram of state 1 for angle adjustment operation when a primary blank is sent to the first station.

[0018] Figure 6 It is Figure 5 Partial enlarged view of part B in

[0019] Figure 7 Schematic diagram of a primary blank on the platen.

[0020] Figure 8 It is Figure 7 Top view of

[0021] Figure 9 Schematic diagram of the steering of the covering skin, the orientation of the first angle, and the moving direction of the fixing device.

[0022] Figure 10 Schematic diagram of state 2 of the angle adjustment operation.

[0023] Figure 11 Schematic diagram of the installation structure of the sleeve and the first needle.

[0024] Figure 12 It is Figure 10 Another perspective view of

[0025] Figure 13 Schematic diagram of state 3 of the angle adjustment operation.

[0026] Figure 14 It is Figure 13 Another perspective view of

[0027] Figure 15 Schematic diagram of the structure of the air blowing device.

[0028] Figure 16 Schematic diagram of state 4 of the angle adjustment operation.

[0029] Figure 17 Schematic diagram of another embodiment of the fixing device and the rotation driving assembly.

[0030] Figure 18 It is Figure 17 Another perspective view of

[0031] Figure 19 Schematic diagram of another embodiment of the rotation driving assembly. Detailed implementation mode

[0032] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation modes.

[0033] As Figure 3-6As shown in the figure, the food blank angle - adjusting mechanism of the present invention includes a table board 11, a fixing device, a moving driving assembly, and a rotating driving assembly. A cutting device 7 is arranged on the second conveying device 8, and the cutting device 7 cuts the raw material skin into a plurality of covering skins 901. The filling 902 can be placed on the covering skin 901 before cutting, or the filling 902 can be placed after cutting. The second conveying device 8 conveys the primary blank 91 to the table board 11 and makes the first corner of the covering skin 901 located at the first working position M1 on the table board 11.

[0034] In this embodiment, the second conveying device 8 conveys three completely - cut covering skins 901 to the table board 11 at one time. Therefore, the angle - adjusting operation can be carried out on the three covering skins 901 simultaneously. Of course, in other embodiments, it is not limited to this.

[0035] The fixing device is used to fix the first corner of the covering skin 901 at the position of the first working position M1. The moving driving assembly is used to drive the fixing device to drag the covering skin 901 to move to the second working position M2. The rotating driving assembly is used to drive the fixing device to rotate to a preset angle during the process of dragging the covering skin 901.

[0036] The first corner 901a of the covering skin 901 is fixed by the fixing device, and then the fixing device is driven to move. And during the process of the fixing device dragging the covering skin 901 to move to the second working position M2, the fixing device is rotated. Since the fixing device and the covering skin 901 move synchronously, when the fixing device rotates, the covering skin 901 rotates synchronously. When the fixing device moves to the second working position M2, the covering skin 901 is dragged to the second working position M2, and at the same time, the covering skin 901 also rotates to the specified angle.

[0037] The trajectories of the plurality of fixing devices moving from the first working position M1 to the second working position M2 are distributed in a divergent shape, so as to be able to drag the covering skin 901 to move in a direction away from each other, and at the same time of completing the angle - adjusting operation, the distances between the plurality of covering skins 901 are also widened, which is convenient for the arrangement of equipment in subsequent processes.

[0038] As Figure 7-9 shown, taking the orientation F1 of the first corner 901a as the front, when the rotation direction F2 of the first corner 901a is to the left, the second working position M2 is located at the left - front of the first working position M1, and the moving direction F3 of the fixing device is this direction. Similarly, when the first corner 901a needs to be rotated to the right, the second working position M2 is located at the right - front of the first working position M1. Therefore, during the dragging process, the covering skin 901 will rotate in the direction of the rotation direction F2 under the action of the frictional force between the covering skin 901 and the table board 11 and the pulling force of the fixing device.

[0039] As Figure 3 、 4 andFigure 10 , 12 As shown, in this embodiment, a moving drive assembly is provided above the platen 11. The moving drive assembly includes a third cylinder 31, and the third cylinder 31 can be a linear cylinder. A long slot 119 is provided on the platen 11, and the driving direction of the third cylinder 31 is consistent with the extending direction of the long slot 119. A clamping drive assembly is installed on the third cylinder 31. The clamping drive assembly includes a fourth cylinder 32. An installation seat 33 is provided at the lower end of the cylinder arm of the fourth cylinder 32. An upper air guide cylinder 34 is fixed on the installation seat 33, and a first needle 35 is fixed at the lower end of the upper air guide cylinder 34. As Figure 11 shown, an air outlet hole 341 is further provided at the lower end of the upper air guide cylinder 34, and a connection hole 342 for connecting an upper blow pipe 343 is provided at the upper part thereof.

[0040] The fixing device includes an upper clamping part 36 and a lower clamping part 37. The fourth cylinder 32 is used to drive the upper clamping part 36 to perform a lifting action. The first station M1 and the second station M2 are located on the track of the long slot 119. The lower clamping part 37 can pass through the long slot 119 and cooperate with the upper clamping part 36 to clamp and fix the covering skin 901 therein. The clamping drive assembly is used to drive the upper clamping part 36 and the lower clamping part 37 to perform clamping.

[0041] A needle hole 371 for inserting the first needle 35 is provided on the lower clamping part 37. The first needle 35 is inserted into the needle hole 371. Thus, when the moving drive assembly drives the upper clamping part 36 to move, the driving force can be transmitted to the lower clamping part 37 through the first needle 35, so that the upper clamping part 36 and the lower clamping part 37 move synchronously. In this embodiment, the upper clamping part 36 includes a sleeve 361. The first needle 35 is arranged inside the sleeve 361. An elastic reset component acts on the first needle 35 and the sleeve 361 respectively, and the elastic reset component starts to store energy when the first needle 35 moves downward relative to the sleeve 361. In this embodiment, the elastic reset component includes a reset spring 38. One end of the reset spring 38 abuts against the sleeve 361, and the other end abuts against the bottom of the upper air guide cylinder 34. When the fourth cylinder 32 drives the sleeve 361 and the first needle 35 to move downward, the lower edge of the sleeve 361 can press tightly on the covering skin 901, and the first needle 35 passes through the covering skin 901 and then is inserted into the needle hole 371 of the lower support part. When the covering skin 901 rotates during the dragging process, the sleeve 361 and the first needle 35 can rotate relative to each other. The sleeve 361 includes a pressing ring 362 located at the lower end and a rubber pressing piece 363 arranged on the pressing ring 362. The pressing ring 362 and the rubber pressing piece 363 can increase the contact area with the covering skin and make the clamping more stable.

[0042] At the edge position of the long groove 119, there is a downwardly recessed eaves portion 119a for supporting the lower clamping portion 37. The lower clamping portion 37 includes a circular plate 372 in contact with the covering skin 901 and a lower air guide cylinder 373 fixed below the circular plate 372. The pinhole 371 is located in the middle of the circular plate 372 and communicates with the lower air guide cylinder 373. The circular plate 372 is placed on the eaves portion 119a. An anti-slip structure, such as anti-slip lines 372a, is provided on the upper surface of the circular plate 372 to increase the friction with the covering skin 901. Of course, an anti-slip structure can also be provided on the lower end surface of the sleeve 361.

[0043] The upper air guide cylinder 34 and the lower air guide cylinder 373 are respectively connected to the upper air blowing pipe 343 and the lower air blowing pipe 374 to form an air blowing structure for blowing air to the covering skin 901 to prevent adhesion between the upper clamping portion 36 and the lower clamping portion 37 and the covering skin 901.

[0044] The lower clamping portion 37 is also connected to a moving and resetting device, which can be a reset cylinder 39 for driving the lower clamping portion 37 to reset to the first working position M1. Of course, a separate moving and resetting device may not be provided, and the lower clamping portion 37 can also be driven to reset by the moving drive assembly.

[0045] At the edge position of the circular plate 372, there is a supporting block portion 375 protruding radially outward. When the lower clamping portion 37 is at the first working position M1, the supporting block portion 375 extends towards the tip of the first corner 901a to support the edge of the first corner 901a. And a through groove 375a extending radially outward is provided on the supporting block portion 375 and extends to the edge of the supporting block portion 375. After the angle adjustment operation is completed, the covering skin 901 is dragged out by inserting the second needle 14 through the covering skin 901 and into the through groove 375a. An accommodating groove 119b for accommodating the supporting block portion 375 is provided on the edge of the long groove 119 at the second working position.

[0046] As Figure 15 shown, a blowing device 191 can also be provided below the long groove 119. The blowing device 191 blows air upward to blow the covering skin 901 above the long groove 119 to prevent the covering skin 901 from partially drooping into the long groove 119 when being dragged above the long groove 119.

[0047] The rotation drive assembly includes a steering portion provided on the fixing device and a guiding portion that can cooperate with the steering portion. The guiding portion is located on the moving track of the steering portion and can limit and guide a part of the steering portion on the side away from its rotation axis.

[0048] As Figure 12 shown, in this embodiment, the steering portion includes a cross bar 41, and the guiding portion includes a front blocking portion 42 and a rear blocking portion 43. When the lower clamping portion 37 moves towards the second working position M2, the cross bar 41 moves forward together. When the cross bar 41 touches the front blocking portion 42, due to the block, the lower clamping portion 37 rotates, thereby driving the covering skin 901 to rotate together; when resetting, the lower clamping portion 37 moves towards the first working position M1. Similarly, the rear blocking portion 43 is used to rotate the lower clamping portion 37 back to the initial angle. In order to prevent over-rotation, a short lever 41a is further provided on the lower clamping portion 37. The short lever 41a is arranged at an angle of 45° with the cross bar 41. The lower clamping portion 37 moves synchronously with a horizontal mounting plate. A reset blocking portion 43a is further provided on the horizontal mounting plate. When the lower clamping portion 37 moves for resetting, the reset blocking portion 43a can block the short lever 41a.

[0049] In another embodiment, as Figure 17 、 18 shown, the fixing device includes a negative pressure suction device 44. The negative pressure suction device 44 includes a circular plate 372, a lower air guide cylinder 373 located below the circular plate 372, and a negative pressure pipe 441 connected to the lower air guide cylinder 373. A negative pressure suction port 440 is provided on the circular plate 372. The negative pressure suction port 440 communicates with the negative pressure pipe 441, and can fix and press the covering skin 901 on the circular plate 372 by means of negative pressure adsorption. The moving drive assembly includes a fifth cylinder 45, and the fifth cylinder 45 drives the negative pressure suction device 44 to move. At the same time, the guiding portion includes a guiding groove 46, and the steering portion includes a guiding block 47 located in the guiding groove 46 and a connecting rod 48 with one end fixed to the fixing device and the other end mounting the guiding block 47.

[0050] In another embodiment, as Figure 19 shown, the rotation drive assembly includes a rotation motor 49. The negative pressure suction device 44 is connected to the power output end of the rotation motor 49, and drives the negative pressure suction device 44 to rotate under the action of the rotation motor 49.

[0051] As Figure 10 、 12 shown, after the covering skin 901 is sent to the table board 11 by the second conveyor device 8, at this time, the lower clamping portion 37 is located below the covering skin 901. The fourth cylinder 32 drives the upper clamping portion 36 to move downwards to clamp and fix the covering skin 901. The first needle 35 passes through the covering skin 901 and then inserts into the needle hole 371 of the lower clamping portion 37.

[0052] As Figure 13 、 14As shown, the third cylinder 31 drives the fixing device to move along the direction of the long groove 119. When the cross bar 41 touches the front blocking portion 42, the lower clamping portion 37 rotates under the action of the cross bar 41, and at the same time drives the covering skin 901 and the upper clamping portion 36 to rotate together.

[0053] As Figure 16 shown, when the fixing device moves to the second working station M2, the covering skin 901 rotates to a specified angle, the second needle 14 moves downward and pierces into the covering skin of the primary blank 91 once, and the upper clamping portion 36 lifts and moves in the return direction.

[0054] Obviously, the above embodiments are only examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or variations can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. And the obvious changes or variations derived therefrom are still within the protection scope of the present invention.

Claims

1. A food blank angle-adjusting mechanism, characterized in that, Comprising: A platen for supporting the covering skin; a fixing device for fixing at the first corner of the covering skin at the position of the first station; A moving drive assembly connected to the fixing device for driving the fixing device to drag the covering skin to move to the second station; a rotating drive assembly connected to the fixing device and capable of driving the fixing device to rotate to a preset angle during the process of dragging the covering skin; the fixing device includes a negative pressure suction device; the rotating drive assembly includes a steering part arranged on the fixing device and a guiding part capable of cooperating with the steering part, the guiding part is located on the moving track of the steering part and can limit and guide the part on the side away from its rotation axis of the steering part.

2. The food blank angle adjustment mechanism according to claim 1, characterized in that: A long groove is provided on the platen, and the driving direction of the moving drive assembly is consistent with the extending direction of the long groove; the negative pressure suction device includes a circular plate and a negative pressure pipe located below the circular plate, a negative pressure suction port is provided on the circular plate, and the negative pressure suction port is communicated with the negative pressure pipe, and can fix and press the covering skin on the circular plate by means of negative pressure adsorption.

3. The food blank angle adjustment mechanism according to claim 2, characterized in that: A supporting block part protruding radially outward is provided at the edge position of the circular plate. When the negative pressure suction device is at the first station, the supporting block part extends towards the tip of the first corner for supporting the edge of the first corner.

4. The food blank angle adjustment mechanism according to claim 2, wherein: An eaves part recessed downward is provided at the edge position of the long groove, and the eaves part is used for supporting the circular plate.

5. The food blank angle adjustment mechanism according to claim 1, characterized in that: The steering part includes a cross bar, and the guiding part includes a blocking part.

6. The food blank angle adjustment mechanism according to claim 1, characterized in that: The fixing device is further provided with a short shift lever; the fixing device moves synchronously with a horizontal mounting plate, and a reset blocking part is further provided on the horizontal mounting plate. When the fixing device performs a reset movement, the reset blocking part can block the short shift lever.

7. The food blank angle adjustment mechanism according to claim 1, characterized in that: The guiding part includes a guiding groove, and the steering part includes a guiding block located in the guiding groove and a connecting rod with one end fixed to the fixing device and the other end mounting the guiding block.

8. The food blank angle adjustment mechanism according to any one of claims 1-4, characterized in that: The first station and the second station are located on the platen; and with the orientation of the first corner as the front, then when the first corner needs to be rotated to the left, the second station is located at the left front of the first station, and when the first corner needs to be rotated to the right, the second station is located at the right front of the first station.

9. The food blank angle adjustment mechanism according to any one of claims 1-4, characterized in that: A plurality of the first stations and a plurality of the second stations are arranged in parallel on the platen. Correspondingly, the fixing device, the moving drive assembly, and the rotating drive assembly are respectively multiple; the moving tracks of the multiple fixing devices from the first station to the second station are distributed in a divergent shape.

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