Bowl film pasting mechanism

Abstract

The invention relates to a bowl film pasting mechanism. The bowl film pasting mechanism comprises a rack main body, an unwinding device, a winding device and a material conveying belt, a storage tray is arranged on the material conveying belt; a first blind hole and a second blind hole are formed in the storage tray; a pre-packaging device, a hot pressing device and a cutting device are arranged in the rack main body; a third blind hole and a fourth blind hole are respectively formed in the pre-packaging device, the hot pressing device and the cutting device; when the first blind hole and the third blind hole directly face each other up and down, the photoelectric correlation sensors in the blind holes form a first positioning detection unit; when the second blind hole and the fourth blind hole directly face each other up and down, the photoelectric correlation sensors in the blind holes form a second positioning detection unit. According to the invention, based on real-time detection of the photoelectric correlation sensor, synchronization and accurate positioning and packaging of the bowl porridge and the sealing film are realized; the pre-packaging device and the cutting device are arranged separately, so that the maintenance cost is reduced; and the lifting component and the film pressing roller are introduced, the automation degree and the packaging quality are improved through the film pre-pressing process, and the production efficiency is remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of food container production lines, and more particularly to a bowl film pasting mechanism. Background Art

[0002] In existing food container production lines, after the filling operation is completed, a film pasting and sealing operation is usually required; for example:

[0003] In a bowl of porridge packaging production line, the bowl of porridge is moved to the hot pressing position for packaging through a conveyor belt, a CCD camera is used to take pictures of the packaged bowl of porridge, the offset degree of the packaging is calculated, and the position of the subsequent packaging film is adjusted according to the offset amount to ensure the correspondence between the pattern and the bowl of porridge.

[0004] In a boxed meal packaging production line, a hot sealing mechanism seals the boxed rice, and a discharging mechanism uses a vacuum suction cup to transfer the packaged boxed rice to a collection box; the hot sealing mechanism includes a pressing block that can reciprocate in the vertical direction, and a pay-off roller and a take-up roller for driving the hot sealing paper roll. An annular hot sealing head matching the flange of the lunch box and an annular cutting knife for cutting the hot sealing paper are provided on the pressing block; the hot sealing paper is led out from the pay-off roller, passes between the pressing block and the template after passing around the first guiding roller, and then is taken up by the take-up roller after passing around the second guiding roller.

[0005] Its disadvantages are as follows: the movement of the container (such as a plastic porridge bowl) and the sealing film (such as a bowl film, also known as a packaging film) may be asynchronous, the use of a CCD camera is costly, and the detection error may require a lot of labor costs for debugging and calibration. Therefore, it is necessary to further optimize the packaging and detection mechanisms at the film pasting and sealing operation station to improve production efficiency and packaging quality.

[0006] The information disclosed in this background art section is only for enhancing the understanding of the overall background art of the present invention, and should not be regarded as an admission or any form of suggestion that this information constitutes the prior art already known to those skilled in the art. Summary of the Invention

[0007] Aiming at the defects existing in the prior art, the purpose of the present invention is to provide a bowl film pasting mechanism, which realizes the synchronous, precise positioning and packaging of the bowl of porridge and the sealing film based on the real-time detection of an optoelectronic pair sensor; the pre-packaging device and the cutting device are separately arranged, which simplifies the maintenance cost; the lifting component and the film pressing roller are introduced, and the automation degree and packaging quality are improved through the pre-film pressing process, and the production efficiency is significantly improved.

[0008] To achieve the above object, the technical solution adopted by the present invention is:

[0009] A bowl film pasting mechanism, characterized by comprising:

[0010] The rack body 1 is provided with an unwinding device 2 on its incoming material side, a winding device 3 on its outgoing material side, and a material conveying belt 4 below it;

[0011] The material conveying belt 4 is equidistantly provided with placing trays 5;

[0012] The placing tray 5 is centrally provided with a placing through hole 51;

[0013] At least one first blind hole 52 and a second blind hole 53 are provided on the placing tray 5 along the circumferential direction of the placing through hole 51, and an emitting end of an optoelectronic pair sensor and a receiving end of the optoelectronic pair sensor are respectively provided;

[0014] A pre-packaging device 6, a hot pressing device 7 and a cutting device 8 are provided in the rack body 1;

[0015] At least a third blind hole 54 and a fourth blind hole 55 are respectively provided on the pre-packaging device 6, the hot pressing device 7 and the cutting device 8, and an emitting end of an optoelectronic pair sensor and a receiving end of the optoelectronic pair sensor are respectively provided;

[0016] When the first blind hole 52 and the third blind hole 54 are vertically aligned, the emitting end of the optoelectronic pair sensor and the receiving end of the optoelectronic pair sensor in the blind holes form a first positioning detection unit in pairs;

[0017] When the second blind hole 53 and the fourth blind hole 55 are vertically aligned, the emitting end of the optoelectronic pair sensor and the receiving end of the optoelectronic pair sensor in the blind holes form a second positioning detection unit in pairs.

[0018] On the basis of the above technical solution, the pre-packaging device 6 is used for preliminary detection and positioning of the sealing film.

[0019] On the basis of the above technical solution, the hot pressing device 7 is used for hot pressing the sealing film on the edge of the porridge bowl.

[0020] On the basis of the above technical solution, the cutting device 8 is used for cutting the redundant film outside the sealing film hot-pressed on the porridge bowl.

[0021] On the basis of the above technical solution, four to eight of the placing trays 5 are set as a group and coaxially arranged on the material conveying belt 4.

[0022] On the basis of the above technical solution, at least one positioning hole is provided at the edge of the outermost placing tray 5 facing the outside, and a travel switch is provided in the positioning hole;

[0023] The hot pressing device 7 is provided with a positioning rod adapted to the travel switch;

[0024] When the hot pressing device 7 moves downwards and approaches the placing tray 5, the positioning rod extends into the positioning hole and touches the travel switch to realize the auxiliary positioning of the hot pressing device 7 and the placing tray 5.

[0025] On the basis of the above technical solution, a linkage rod is provided between the pre-packaging device 6, the hot-pressing device 7 and the cutting device 8, and the three move downward synchronously and respectively complete preliminary positioning, hot-pressing packaging and film sealing and cutting.

[0026] On the basis of the above technical solution, a lifting member 57 is respectively provided on both sides of the hot-pressing device 7, and a film pressing roller 56 is provided at the lower end of the lifting member 57.

[0027] On the basis of the above technical solution, the first blind hole 52 and the second blind hole 53, as well as the third blind hole 54 and the fourth blind hole 55, are all perpendicular to the placement tray 5 in the vertical direction.

[0028] On the basis of the above technical solution, the first blind hole 52 and the second blind hole 53, as well as the third blind hole 54 and the fourth blind hole 55, are all arranged at an angle with the upper surface of the placement tray 5 in an oblique direction.

[0029] A bowl film pasting mechanism according to the present invention has the following beneficial effects:

[0030] Based on the real-time detection of the photoelectric pair-emitting sensor, the synchronization, precise positioning and packaging of the bowl of porridge and the film are realized; the speeds and step amounts of the conveyor belt, the unwinding device and the winding device can be dynamically adjusted according to the position deviation feedback by the sensor; the separate settings of the pre-packaging device and the cutting device not only realize the preliminary positioning of the film sealing, but also simplify the cost of mechanism maintenance; at the same time, by setting the lifting member and the film pressing roller and introducing the pre-pressing film operation process, the film is made to fit more accurately to the edge of the bowl of porridge; the automation degree and packaging quality of the bowl of porridge packaging are improved, the need for manual intervention is reduced, and the production efficiency is significantly increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present invention has the following drawings:

[0032] The drawings are used to better understand the present invention and do not constitute an improper limitation to the present invention. Among them:

[0033] Figure 1 A schematic structural diagram of Embodiment 1 of a bowl film pasting mechanism according to the present invention.

[0034] Figure 2 A schematic structural diagram of Embodiment 2 of a bowl film pasting mechanism according to the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0035] The present invention will be further described in detail below with reference to the accompanying drawings. The detailed description is made in connection with exemplary embodiments of the present invention, including various details of the embodiments of the present invention to facilitate understanding, which should be considered merely exemplary. Therefore, those skilled in the art should recognize that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present invention. Similarly, for the sake of clarity and conciseness, descriptions of well-known functions and structures are omitted in the following description.

[0036] As Figure 1 shown, a bowl-film pasting mechanism of the present invention includes:

[0037] A frame body 1, on its incoming material side, there is a unwinding device 2, on its outgoing material side, there is a winding device 3, and below it, there is a material conveying conveyor belt 4;

[0038] On the material conveying conveyor belt 4, there are evenly spaced placement trays 5;

[0039] In the center of the placement tray 5, there is a placement through hole 51;

[0040] Along the circumferential direction of the placement through hole 51, on the placement tray 5, there are at least one first blind hole 52 and a second blind hole 53, respectively provided with a light-emitting end of an optoelectronic opposed sensor and a receiving end of an optoelectronic opposed sensor;

[0041] Inside the frame body 1, there are a pre-packaging device 6, a hot pressing device 7, and a cutting device 8;

[0042] On the pre-packaging device 6, the hot pressing device 7, and the cutting device 8, there are at least a third blind hole 54 and a fourth blind hole 55 respectively, respectively provided with a light-emitting end of an optoelectronic opposed sensor and a receiving end of an optoelectronic opposed sensor;

[0043] When the first blind hole 52 and the third blind hole 54 are vertically aligned, the light-emitting end of the optoelectronic opposed sensor and the receiving end of the optoelectronic opposed sensor in the blind holes form a pair to constitute a first positioning detection unit;

[0044] When the second blind hole 53 and the fourth blind hole 55 are vertically aligned, the light-emitting end of the optoelectronic opposed sensor and the receiving end of the optoelectronic opposed sensor in the blind holes form a pair to constitute a second positioning detection unit.

[0045] Taking the hot pressing device 7 as an example, in this embodiment, the congee bowl is placed in the placement through hole 51, the sealing film 21 is wound around the unwinding device 2 and the winding device 3 and tightened. The positions of the congee bowl and the sealing film are detected in real time by the optoelectronic opposed sensors in the first positioning detection unit and the second positioning detection unit. The controller adjusts the speed and step amount of the conveyor belt according to the position deviation detected by the sensors, and coordinates with the speeds of the unwinding device 2 and the winding device 3, which can ensure that the congee bowl and the sealing film can move synchronously and precisely below the hot pressing device 7 for packaging. The pre-packaging device 6 and the cutting device 8 are the same as the hot pressing device 7.

[0046] Exemplarily, the photoelectric opposed sensor is an infrared opposed sensor or a laser opposed sensor. Figure 1 The dotted line between the blind holes represents the light path when the upper and lower blind holes are directly opposite.

[0047] Exemplarily, the first blind hole 52 and the second blind hole 53 are arranged at the four corners or the center of the edge of the storage tray 5. If cost is given priority, at least the first positioning detection unit and the second positioning detection unit should be set; if positioning accuracy is given priority, the number of positioning detection units is at least three to four.

[0048] Exemplarily, the pre-packaging device 6, the hot pressing device 7 and the cutting device 8 are arranged in sequence front and back along the moving direction of the conveyor belt.

[0049] Exemplarily, the pre-packaging device 6, the hot pressing device 7 and the cutting device 8 are arranged at the same position, and the moving parts are designed to be circular and nested in sequence from the inside to the outside. This scheme is preferred, which can improve the compactness of the equipment layout and make more reasonable use of space.

[0050] Based on the above technical solution, the pre-packaging device 6 is used for preliminary detection and positioning of the sealing film.

[0051] During the downward movement of the pre-packaging device 6, by collecting the real-time data of the positioning detection unit, it can be determined whether the porridge bowl and the sealing film are correctly aligned up and down. If there is an error, it can be corrected by adjusting the feeding conveyor belt 4, the film unwinding device 2 and the film winding device 3. Since the distance between the pre-packaging device 6 and the hot pressing device 7 is fixed, the adjustment amounts of the speeds, step amounts and other parameters of other devices can be calculated accordingly, which will not be elaborated here.

[0052] Based on the above technical solution, the hot pressing device 7 is used for hot pressing the sealing film on the edge of the porridge bowl.

[0053] The hot pressing device 7 can be implemented according to the existing technology, which will not be elaborated here.

[0054] Based on the above technical solution, the cutting device 8 is used for cutting the redundant film outside the sealing film hot-pressed on the porridge bowl.

[0055] The cutting device 8 can be implemented according to the existing technology, which will not be elaborated here.

[0056] Based on the above technical solution, the storage trays 5 are grouped in fours to eights and coaxially arranged on the feeding conveyor belt 4.

[0057] In this embodiment, fours to eights storage trays 5 can be grouped as a set and arranged side by side on the feeding conveyor belt 4. Each time, the hot pressing device 7 can simultaneously complete the operation of pasting the bowl film on multiple porridge bowls in the same group.

[0058] From the perspective of cost control and convenient debugging, as long as the positioning accuracy can be satisfied, the first positioning detection unit and the second positioning detection unit can be provided only on some of the storage trays 5. Exemplarily, the first positioning detection unit and the second positioning detection unit are provided only on the two outermost storage trays 5; or, the first positioning detection unit and the second positioning detection unit are provided only on the two innermost storage trays 5; or, the first positioning detection unit and the second positioning detection unit are provided on the two outermost storage trays 5 and one innermost storage tray 5; or, the first positioning detection unit and the second positioning detection unit are provided on the storage trays 5 at equal intervals.

[0059] On the basis of the above technical solution, at least one positioning hole is provided at the outer edge of the outermost storage tray 5 facing the outside, and a travel switch is provided in the positioning hole;

[0060] A positioning rod adapted to the travel switch is provided on the hot pressing device 7;

[0061] When the hot pressing device 7 moves downward and approaches the storage tray 5, the positioning rod extends into the positioning hole and touches the travel switch, realizing the auxiliary positioning of the hot pressing device 7 and the storage tray 5.

[0062] In order to avoid errors caused by relying solely on the first positioning detection unit and the second positioning detection unit, in this embodiment, mechanical auxiliary positioning is completed by adding a positioning hole and a positioning rod to improve the positioning accuracy and ensure the positioning accuracy during hot pressing.

[0063] It can be understood that the positioning hole, the travel switch and the positioning rod can be provided on the pre-packaging device 6, or can be provided respectively in the pre-packaging device 6, the hot pressing device 7 and the cutting device 8 at the same time.

[0064] On the basis of the above technical solution, a linkage rod is provided between the pre-packaging device 6, the hot pressing device 7 and the cutting device 8, and the three move downward synchronously and respectively complete preliminary positioning, hot pressing and film sealing cutting.

[0065] The setting of the linkage rod enables the three devices to act synchronously. In the traditional production process, pre-packaging, hot pressing and film sealing cutting are often carried out step by step. After each device completes its own process, the product needs to wait for the action of the next device. After using the linkage rod, the three devices move downward at the same time. While the product is being preliminarily positioned by the pre-packaging device, the hot pressing device and the cutting device are also in place, greatly reducing the waiting time of the product between the devices, thereby improving the efficiency of the entire production process.

[0066] The pre-encapsulation device 6 is responsible for preliminary positioning. It moves downward synchronously with the hot pressing device 7 and the cutting device 8 through a linkage rod, which can ensure the accurate position of the product during the hot pressing encapsulation and film cutting processes. If the actions of the three devices are not synchronized, the product may shift in position when moving from the pre-encapsulation device to the hot pressing device or the cutting device, resulting in loose encapsulation or inaccurate film cutting. The design of the linkage rod enables the product to remain in the same position throughout the encapsulation process, improving the accuracy and quality of encapsulation.

[0067] In the first embodiment, a long linkage rod is used, which transversely penetrates the pre-encapsulation device 6, the hot pressing device 7, and the cutting device 8 along the moving direction of the conveyor belt. At the positions corresponding to each device on the linkage rod, movable connecting components are provided and are respectively connected to the downward movement driving mechanisms of the pre-encapsulation device 6, the hot pressing device 7, and the cutting device 8. For example, at the connection part of the linkage rod and the pre-encapsulation device 6, a lever that can swing up and down is connected by a hinge, and the other end of the lever is connected to the downward movement driving component of the pre-encapsulation device 6. When the linkage rod moves downward, it drives the lever to swing, thereby driving the pre-encapsulation device 6 to move downward. Similarly, similar connection methods are also used for the hot pressing device 7 and the cutting device 8 to ensure that the downward movement of the linkage rod can be accurately transmitted to each device.

[0068] When the equipment is started for encapsulation operations, the linkage rod begins to move downward synchronously under the action of an external driving mechanism. As the linkage rod moves downward, it drives the pre-encapsulation device 6, the hot pressing device 7, and the cutting device 8 to move downward in sequence through the connecting components.

[0069] The feeding conveyor belt 4 sends the first group of porridge bowls to the lower part of the pre-encapsulation device 6. The pre-encapsulation device 6 first contacts the first group of porridge bowls and conducts preliminary positioning to ensure that the film accurately covers the mouth of the container or determines the error amount.

[0070] The conveyor belt 4 sends the first group of porridge bowls to the lower part of the hot pressing device 7, and corrects the error amount during the conveying process. The hot pressing device 7 moves down to the working position to perform hot pressing encapsulation on the film and the container, making the film closely adhere to the container. At this time, the pre-encapsulation device 6 conducts preliminary positioning on the second group of porridge bowls.

[0071] The conveyor belt 4 sends the first group of porridge bowls to the lower part of the cutting device 8. The cutting device 8 moves down and uses its cutting component to cut the excess film. At this time, the hot pressing device 7 performs hot pressing encapsulation on the second group of porridge bowls, and the pre-encapsulation device 6 conducts preliminary positioning on the third group of porridge bowls.

[0072] Embodiment 2: Design a central axis, and the linkage rods are radially distributed around the central axis. One end of each linkage rod is connected to the central axis through a rotatable connecting component, and the other ends are respectively connected to the downward movement driving components of the pre-packaging device 6, the hot pressing device 7, and the cutting device 8. For example, for the pre-packaging device 6, the linkage rod is connected to the downward movement driving component of the pre-packaging device 6 through a slider-chute mechanism. When the linkage rod rotates around the central axis, it drives the slider to move within the chute, thereby driving the pre-packaging device 6 to move downward. Similar connection methods are also adopted for the hot pressing device 7 and the cutting device 8, but according to the different radii of the devices, the lengths and connection angles of the linkage rods are adjusted to ensure that each device can move downward synchronously.

[0073] After the device is started, the central axis begins to rotate driven by the driving motor. As the central axis rotates, it drives the radially distributed linkage rods to perform circular motion around the central axis. The circular motion of the linkage rods is converted into the downward movement of the pre-packaging device 6, the hot pressing device 7, and the cutting device 8 through the connecting components. Since the devices are nested in sequence from the inside to the outside, under the action of the linkage rods, they can move downward synchronously.

[0074] The pre-packaging device 6 first performs preliminary positioning on the porridge bowl and the sealing film, then the hot pressing device 7 performs hot pressing and packaging, and finally the cutting device 8 performs sealing film cutting. For example, the pre-packaging device 6 sleeves the porridge bowl inside it, determines the contour and position of the bent bowl edge of the porridge bowl, then the hot pressing device 7 moves downward inside the pre-packaging device 6, touches the bent bowl edge for hot pressing and packaging, and finally the cutting device 8 moves downward outside the pre-packaging device 6 and cuts the sealing film along the outer contour of the pre-packaging device 6.

[0075] After completing one packaging action, the central axis rotates in the reverse direction, and the linkage rods drive each device back to the initial position to prepare for the next packaging operation.

[0076] On the basis of the above technical solution, as Figure 2 shown, a lifting component 57 is respectively provided on both sides of the hot pressing device 7, and a film pressing roller 56 is provided at the lower end of the lifting component 57.

[0077] In this embodiment, the lifting components 57 on both sides of the hot pressing device 7 move downward synchronously, drive the film pressing roller 56 to touch the sealing film 21, and drive the sealing film 21 to be close to the porridge bowl placed in the placement through hole 51 to complete the pre-pressing film operation; then the hot pressing device 7 moves downward and presses tightly against the sealing film 21 and the porridge bowl, and hot presses the sealing film on the edge of the porridge bowl. The position of the sealing film can be adjusted through the film pressing roller 56 to ensure the positioning accuracy.

[0078] On the basis of the above technical solution, the first blind hole 52 and the second blind hole 53, as well as the third blind hole 54 and the fourth blind hole 55, are all perpendicular to the placement tray 5 in the vertical direction.

[0079] On the basis of the above technical solution, the first blind hole 52 and the second blind hole 53, as well as the third blind hole 54 and the fourth blind hole 55, are all arranged at an angle with the upper surface of the storage tray 5 along an oblique direction.

[0080] Exemplarily, the angle is between 30 and 75 degrees.

[0081] On the basis of the above technical solution, a kidney-shaped hole and / or a round hole for calibrating the photoelectric pair-sensor are provided at the edge of the sealing film 21.

[0082] On the basis of the above technical solution, a CCD detection device is further provided for collecting the image of the bowl of porridge after the sealing film is cut.

[0083] The quality inspection of the bowl of porridge is completed by the CCD detection device (not shown in the figure), and it can also assist the installation and debugging work of the mechanism to improve the debugging efficiency.

[0084] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0085] The above are only the preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the above embodiments. Any equivalent modification or change made by those skilled in the art according to the disclosure of the present invention shall be included in the protection scope recorded in the claims.

Claims

1. A bowl - sticking film mechanism, characterized in that, Including: A frame main body (1), on the incoming material side of which there is a unwinding device (2), on the outgoing material side of which there is a winding device (3), and below which there is a material conveying belt (4); On the material conveying belt (4), there are placed trays (5) arranged at equal intervals; In the middle of the placed tray (5), there is a placing through hole (51); Along the circumferential direction of the placing through hole (51), on the placed tray (5), there are at least one first blind hole (52) and a second blind hole (53), and a photoelectric opposed sensor emitter and a photoelectric opposed sensor receiver are respectively arranged; Inside the frame main body (1), there are a pre-packaging device (6), a hot pressing device (7) and a cutting device (8); On the pre-packaging device (6), the hot pressing device (7) and the cutting device (8), there are at least a third blind hole (54) and a fourth blind hole (55) respectively, and a photoelectric opposed sensor emitter and a photoelectric opposed sensor receiver are respectively arranged; When the first blind hole (52) and the third blind hole (54) are vertically aligned, the photoelectric opposed sensor emitter and the photoelectric opposed sensor receiver in the blind holes form a pair to constitute a first positioning detection unit; When the second blind hole (53) and the fourth blind hole (55) are vertically aligned, the photoelectric opposed sensor emitter and the photoelectric opposed sensor receiver in the blind holes form a pair to constitute a second positioning detection unit.

2. The bowl-attaching film mechanism according to claim 1, characterized in that, The pre-packaging device (6) is used for preliminary detection and positioning of the sealing film.

3. The bowl-attaching film mechanism according to claim 1, characterized in that, The hot pressing device (7) is used for hot pressing the sealing film on the edge of the porridge bowl.

4. The bowl-attaching film mechanism according to claim 1, characterized in that, The cutting device (8) is used for cutting the redundant film outside the sealing film hot pressed on the porridge bowl.

5. The bowl-attaching film mechanism according to claim 1, characterized in that, The placed trays (5) are grouped in four to eight and are coaxially arranged on the material conveying belt (4).

6. The bowl-attaching film mechanism according to claim 5, wherein, At least one positioning hole is provided at the edge facing the outside of the outermost placed tray (5), and a travel switch is arranged in the positioning hole; On the hot pressing device (7), there is a positioning rod adapted to the travel switch; When the hot pressing device (7) moves down and approaches the placed tray (5), the positioning rod extends into the positioning hole and touches the travel switch, realizing the auxiliary positioning of the hot pressing device (7) and the placed tray (5).

7. A bowl-attaching film mechanism according to claim 1, characterized in that, A linkage rod is arranged between the pre-packaging device (6), the hot pressing device (7) and the cutting device (8), and the three move down synchronously and respectively complete preliminary positioning, hot pressing and packaging, and sealing film cutting.

8. The bowl-attaching film mechanism according to claim 1, characterized in that, On both sides of the hot pressing device (7), there is a lifting component (57) respectively, and a film pressing roller (56) is arranged at the lower end of the lifting component (57).

9. The bowl pasting film mechanism according to claim 1, characterized in that, The first blind hole (52) and the second blind hole (53), and the third blind hole (54) and the fourth blind hole (55) are all arranged perpendicular to the placed tray (5) in the vertical direction.

10. A bowl - sticking film mechanism as described in claim 1, characterized in that, The first blind hole (52) and the second blind hole (53), and the third blind hole (54) and the fourth blind hole (55) are all arranged at an angle with the upper surface of the placed tray (5) in an oblique direction.

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