Device for automatically laminating freeze-drying tray

Abstract

The utility model relates to the technical field of food vacuum freeze-drying, and particularly provides a device for automatically laminating a freeze-drying tray. Comprising a roller conveying line, a PE film frame, a vacuum suction cup, a suction cup air cylinder, a first film pressing air cylinder, a second film pressing air cylinder, a suction cup support, a film pressing support, a guide rail sliding block, a first synchronous belt system, a second synchronous belt system, a rodless air cylinder, a first scraping plate and a second scraping plate. The synchronous belt system driven by the servo motor is dynamically synchronized with the roller conveying line, so that the film laminating rhythm is constant, the efficiency is improved by more than 50% compared with manual operation, the influence of manual speed fluctuation on a production line is eliminated, and the film laminating efficiency is remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the food vacuum freeze drying technical field, specifically relates to a device for automatic film covering of freeze drying tray. BACKGROUND

[0002] Nowadays, the food freeze drying industry is booming, and domestic freeze dried food is in short supply, but the food freeze drying manufacturing industry is still a labor-intensive industry, and many processes still rely on a large number of manual work. In order to facilitate unloading or due to the particularity of the material, a layer of PE film is laid in the tray in advance during freeze drying of the material to separate the material from the freeze drying tray. The present manual film covering is arranged by 2-3 operators along the roller conveying line, and the tray is manually operated after being conveyed from the roller line. Due to the different proficiency of each person, the slow speed of the two operators will cause the tray to wait for a long time on the roller line, which affects the front tray loading work. In order to reduce the influence of manual factors on the production speed and liberate manpower, an automatic film covering device for freeze drying tray is invented. SUMMARY

[0003] In view of the deficiencies in the prior art, the utility model aims to provide an automatic film covering device for freeze drying tray, which solves the problems raised in the background art.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: an automatic film covering device for freeze drying tray, comprising: a roller conveying line, a PE film frame, a vacuum suction cup, a suction cup air cylinder, a first film pressing air cylinder, a second film pressing air cylinder, a suction cup support, a film pressing support, a guide rail sliding block, a synchronous belt system one, a synchronous belt system two, a rodless air cylinder, a first scraper and a second scraper;

[0005] The vacuum suction cup and the suction cup air cylinder are installed on the suction cup support, and the suction cup support slides along the guide rail sliding block through the synchronous belt system one;

[0006] The first scraper is connected with the first film pressing air cylinder, and the second scraper is connected with the second film pressing air cylinder, the second film pressing air cylinder is connected with the rodless air cylinder, the first film pressing air cylinder and the rodless air cylinder are installed on the film pressing support, and the film pressing support slides along the guide rail sliding block through the synchronous belt system two;

[0007] The PE film frame is provided with an electrostatic separator on the side surface; the roller conveying line, the synchronous belt system one, the synchronous belt system two, the suction cup air cylinder, the first film pressing air cylinder, the second film pressing air cylinder and the rodless air cylinder are controlled by PLC and connected with the optical fiber sensor signal.

[0008] Preferably, the synchronous belt system one and the synchronous belt system two are driven by bus type variable frequency servo motor, and are configured with planetary reducer and brake system.

[0009] Preferably, an optical fiber sensor is provided below the PE film frame to detect the position of the material tray and trigger the suction cylinder to operate.

[0010] Preferably, both the suction cup bracket and the pressing film bracket are equipped with sensors to detect the position of the material tray and control the synchronous movement of the synchronous belt system one, the synchronous belt system two and the roller conveyor line.

[0011] Preferably, the first scraper presses down on the inner edge of the material tray by the first pressing cylinder, and the second scraper scrapes the PE film onto the material tray by the coordinated action of the second pressing cylinder and the rodless cylinder.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This utility model achieves dynamic synchronization between the synchronous belt system driven by a servo motor and the roller conveyor line, thereby maintaining a constant coating cycle time. This increases efficiency by more than 50% compared to manual operation, eliminates the impact of manual speed fluctuations on the production line, and significantly improves coating efficiency.

[0014] 2. The servo motor and brake system of this utility model ensure that the synchronous belt movement accuracy reaches ±1mm. Combined with the segmented film pressing (film pressing cylinder and rodless cylinder working together to scrape and apply) design, the film covering position is accurate, which greatly improves the film covering qualification rate.

[0015] 3. By adjusting the position of the fiber optic sensor and the parameters of the servo motor, this utility model can be compatible with freeze-drying trays of different sizes, such as 750×550×35mm, 550×350×33mm, 640×460×45mm, and 550×370×45mm, covering more than 80% of the industry's needs.

[0016] 4. This utility model completely replaces the manual film coating process that originally required 2-3 operators, reducing labor costs and avoiding human error.

[0017] 5. This utility model has high reliability in membrane separation: the electrostatic separator on the side of the PE membrane frame realizes the separation of single-layer PE membrane, with a membrane separation success rate of 99%, avoiding the problem of easy adhesion when separating membranes manually.

[0018] 6. Enhanced stability after lamination: By segmented pressing (pressing the inner edge first and then scraping) and a buffer design that retains a distance of 2-3 material trays after lamination, the risk of PE film delamination caused by stress rebound is reduced. Attached Figure Description

[0019] Fig. 1 A three-dimensional structural schematic diagram of the device of this utility model is provided;

[0020] Fig. 2 This is a top view of the device of this utility model;

[0021] Fig. 3 It is a front view structural schematic diagram of the device.

[0022] In the figure: 1, PE film frame; 2, vacuum chuck; 3, chuck cylinder; 4, first film pressing cylinder; 5, second film pressing cylinder; 6, chuck support; 7, film pressing support; 8, guide rail sliding block; 9, synchronous belt system I; 10, synchronous belt system II; 11, rodless cylinder; 12, first scraper; 13, second scraper. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the utility model clearer and more apparent, the following will be further described in detail by combining with the drawings. It should be understood that the specific embodiments described herein are only used to explain the utility model, and are not used to limit the utility model.

[0024] In this paper, the serial number of the assembly itself, for example, "first", "second" and the like, is only used to distinguish the described object, and does not have any order or technical meaning. And the "connection", "coupling" of the present application includes direct and indirect connection (coupling) unless otherwise specified. In the description of the utility model, it should be understood that the orientation or position relationship indicated by the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model to a particular orientation, configuration and operation of the indicated device or element. Therefore, it cannot be understood as a limitation of the utility model.

[0025] In the utility model, unless otherwise specified and limited, the first feature is "on" or "under" the second feature. The first and second features can be in direct contact, or the first and second features can be indirectly contacted through an intermediate medium. Moreover, the first feature "above", "above" and "above" of the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" of the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0026] The embodiment of the present application will be described below with reference to Figs. 1-3 to describe a device for automatically covering the freeze-drying tray.

[0027] The device for automatically covering the freeze-drying tray comprises a roller conveying line, a PE film frame 1, a vacuum suction cup 2, a suction cup cylinder 3, a first film pressing cylinder 4, a second film pressing cylinder 5, a suction cup support 6, a film pressing support 7, a guide rail sliding block 8, a synchronous belt system 1 9, a synchronous belt system 2 10, a rodless cylinder 11, a first scraper 12 and a second scraper 13.

[0028] The vacuum suction cup 2 and the suction cup cylinder 3 are installed on the suction cup support 6, and the suction cup support 6 slides along the guide rail sliding block 8 through the synchronous belt system 1 9.

[0029] The first scraper 12 is connected with the first film pressing cylinder 4, the second scraper 13 is connected with the second film pressing cylinder 5, the second film pressing cylinder 5 is connected with the rodless cylinder 11, the first film pressing cylinder 4 and the rodless cylinder 11 are installed on the film pressing support 7, and the film pressing support 7 slides along the guide rail sliding block 8 through the synchronous belt system 2 10.

[0030] The PE film frame 1 is provided with an electrostatic separator on the side surface; the roller conveying line, the synchronous belt system 1 9, the synchronous belt system 2 10, the suction cup cylinder 3, the first film pressing cylinder 4, the second film pressing cylinder 5 and the rodless cylinder 11 are controlled by a PLC and connected with an optical fiber sensor signal.

[0031] Further, the synchronous belt system 1 9 and the synchronous belt system 2 10 are both driven by bus type variable frequency servo motors, and are provided with planetary reducers and brake systems, and the output speed range of the servo motor is 10-100 revolutions per minute.

[0032] Further, the PE film frame 1 is provided with an optical fiber sensor below, which is used for detecting the position of the tray and triggering the action of the suction cup cylinder 3.

[0033] Further, the suction cup support 6 and the film pressing support 7 are both provided with sensors, which are used for detecting the position of the tray and controlling the synchronous movement of the synchronous belt system 1 9, the synchronous belt system 2 10 and the roller conveying line.

[0034] In a further embodiment, the first scraper 12 presses the inner edge of the tray through the first film pressing cylinder 4, and the second scraper 13 pastes the PE film to the tray through the cooperative action of the second film pressing cylinder 5 and the rodless cylinder 11.

[0035] In a further embodiment, the movement accuracy of the synchronous belt system 1 9 and the synchronous belt system 2 10 is ±1mm.

[0036] In a further embodiment, the device is adapted to the specifications of the freeze-drying tray including 750x550x35mm, 550x350x33mm, 640x460x45mm and 550x370x45mm.

[0037] The specific working process of the device for automatically covering the freeze-drying tray is described in combination with the above embodiments.

[0038] 1, film and film: PE film frame 1 side of the electrostatic separator separates the uppermost single PE film, the lower optical fiber sensor detects the freeze-dried tray in place, trigger the vacuum chuck 2 suction PE film, followed by the suction cylinder 3 retraction of the PE film out of the film frame 1.

[0039] 2, synchronous film: the sensor on the chuck holder 6 detects the tray, the first servo motor driven synchronous belt system 9 starts, drive the chuck holder 6 along the guide rail slider 8 and the cylinder conveying line synchronous motion; suction cylinder 3 again, the PE film is laid to the edge of the tray, the synchronous belt system 9 continues to move until the PE film completely covers the tray, the vacuum chuck 2 releases the PE film, the chuck holder 6 is quickly reset.

[0040] 3, segmented film: the sensor on the film holder 7 detects the tray after the film, the first film cylinder 4 drives the first scraper 12 down to fix the PE film in the tray edge; the second film cylinder 5 drives the second scraper 13 down, while the rodless cylinder 11 pulls the second scraper 13 along the inner wall of the tray to scrape the PE film, the second servo motor driven synchronous belt system 10 drives the film holder 7 and the tray synchronous motion, to ensure the scraping flat.

[0041] 4, reset and cycle: after the film is completed, the first film cylinder 4, the second film cylinder 5 retraction, synchronous belt system 10 drive the film holder 7 quickly reset; the tray after the film is completed continues to be transported to the loading station, the film beat is stable for 4~5 seconds / tray.

[0042] 5, parameter adjustment and adaptation: adjust the optical fiber sensor position, servo motor speed 10~100 rpm and synchronous belt system 9, synchronous belt system 10 motion parameters through the PLC, adapt to different specifications such as (750×550×35mm, 550×350×33mm, 640×460×45mm and 550×370×45mm).

[0043] The technical features of the above embodiments can be combined arbitrarily. In order to make the description simple, not all possible combinations of the technical features in the above embodiments are described, but as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the present application.

[0044] The above embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it should not be understood as limiting the scope of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of variations and improvements can be made, which belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. An apparatus for automatically coating freeze-drying trays, characterized in that: include: Roller conveyor line, PE film frame (1), vacuum suction cup (2), suction cup cylinder (3), first film pressing cylinder (4), second film pressing cylinder (5), suction cup bracket (6), film pressing bracket (7), guide rail slider (8), synchronous belt system one (9), synchronous belt system two (10), rodless cylinder (11), first scraper (12) and second scraper (13); The vacuum suction cup (2) and suction cup cylinder (3) are mounted on the suction cup bracket (6), and the suction cup bracket (6) slides along the guide rail slider (8) via the synchronous belt system (9); The first scraper (12) is connected to the first pressing cylinder (4), the second scraper (13) is connected to the second pressing cylinder (5), the second pressing cylinder (5) is connected to the rodless cylinder (11), the first pressing cylinder (4) and the rodless cylinder (11) are mounted on the pressing bracket (7), and the pressing bracket (7) slides along the guide rail slider (8) through the synchronous belt system (10); The PE film frame (1) is provided with an electrostatic separator on its side; the roller conveyor, synchronous belt system one (9), synchronous belt system two (10), suction cylinder (3), first film pressing cylinder (4), second film pressing cylinder (5) and rodless cylinder (11) are controlled by PLC and connected to fiber optic sensor signals.

2. The device for automatically coating freeze-drying trays according to claim 1, characterized in that: Both the synchronous belt system one (9) and the synchronous belt system two (10) are driven by bus-type variable frequency servo motors and equipped with planetary reducers and brake systems.

3. The device for automatically coating freeze-drying trays according to claim 1, characterized in that: The PE film frame (1) is equipped with an optical fiber sensor below it, which is used to detect the position of the material tray and trigger the action of the suction cylinder (3).

4. The device for automatically coating freeze-drying trays according to claim 1, characterized in that: Sensors are provided on both the suction cup bracket (6) and the pressure film bracket (7) to detect the position of the material tray and control the synchronous movement of the synchronous belt system one (9), the synchronous belt system two (10) and the roller conveyor line.

5. The apparatus for automatically coating freeze-drying trays according to claim 1, characterized in that: The first scraper (12) presses down on the inner edge of the material tray through the first pressing cylinder (4), and the second scraper (13) scrapes the PE film onto the material tray through the coordinated action of the second pressing cylinder (5) and the rodless cylinder (11).

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