A packaging machine for food products

Abstract

The utility model relates to a kind of packaging machines for food, including the transmission device for transmission food packaging bag;It is equipped with the packaging mechanism for packaging packaging bag on the transmission device, and the transmission device and the right side of the packaging mechanism are equipped with guide assembly, to be used for guiding packaging bag to the inside of packaging mechanism;The packaging mechanism includes the support frame being set on the transmission device.This packaging machine for food, two packaging rollers are driven to rotate in opposite directions by transmission structure, when packaging bags of different widths are conveyed to packaging area by transmission device, the mouth of packaging bag will be continuously rolled into two packaging rollers with roller rotation, since the roller is cylindrical and continuously rolling, it can form uniform clamping and heating on any width area of the mouth of packaging bag, without adjusting the distance between rollers for different widths, it can realize continuous packaging from narrow snack bag to wide rice bag, avoiding the cumbersome operation of traditional fixed clamping plate which needs to be packaged in sections.

Description

Technical Field

[0001] This utility model relates to the field of food processing technology, specifically to a food packaging machine. Background Technology

[0002] Currently, mainstream food packaging machines mainly consist of a machine body, heat sealing components, a drive mechanism, and a control unit. The core of the heat sealing component is a pair of opposing heat sealing clamps. During packaging, the thermoplastic material at the opening of the packaging bag is melted and bonded together by heating the clamps and applying clamping pressure, thus achieving a seal and fixation. This is a key piece of equipment for standardized packaging in the food industry.

[0003] However, in practical applications, the width of the opening of different types of food packaging bags, such as snack bags, rice and flour bags, and pre-made vegetable bags, varies significantly. The heat sealing clamps of existing sealing machines are mostly designed with a fixed length, which cannot be flexibly adjusted according to the width of the opening of the bag to be sealed, directly resulting in insufficient equipment adaptability.

[0004] Fixed-length heat-sealing clamps cause multiple problems: when the clamp length does not match the bag opening, it can easily lead to wasted electricity, damage to the packaging bag, or the need for segmented sealing. Segmented sealing, in turn, results in cumbersome operation and inconsistent sealing. Frequent changes in packaging bag size require machine downtime to replace the clamps, which is time-consuming and severely reduces sealing efficiency. Companies need to purchase multiple machines of different specifications, increasing costs and occupying space. At the same time, segmented sealing is prone to problems with inconsistencies in temperature and pressure, resulting in poor sealing and affecting the shelf life of food. Utility Model Content

[0005] In view of the shortcomings of the prior art, this utility model provides a food packaging machine, which solves the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a food packaging machine, including a conveying device for conveying food packaging bags;

[0007] A sealing mechanism for sealing packaging bags is installed on the conveying device, and a guide component is installed on the right side of the conveying device to guide the packaging bags into the interior of the sealing mechanism.

[0008] The packaging mechanism includes a support frame mounted on the transmission device. Two connecting shafts are rotatably connected inside the support frame via bearings. Connecting sleeves are fitted on the outer sides of both connecting shafts. Packaging rollers are provided on the outer sides of both connecting sleeves. At least two convex rings are provided on the outer side of one of the packaging rollers, corresponding to at least two convex rings. At least two annular grooves are opened on the outer side of the other packaging roller, each adapted to at least two cams.

[0009] The packaging mechanism also includes a transmission structure mounted on the support frame for driving the two packaging rollers to rotate in opposite directions.

[0010] Furthermore, both of the encapsulation rollers are hollow inside, and an electric heating wire is provided inside the encapsulation rollers.

[0011] Furthermore, the transmission structure includes a bearing plate arranged laterally inside the support frame, and a motor with its output end connected to one of the connecting shafts is installed on the top of the bearing plate.

[0012] Gears are fixedly sleeved on the outer side of both connecting shafts, and the two gears mesh with each other.

[0013] Furthermore, the guiding component includes limiting plates disposed on the front and rear sides of the transmission device, a vertical plate is installed inside each of the two limiting plates, a connecting frame is provided on the opposite side of each of the two vertical plates, and a guide plate is installed on the opposite side of each of the two connecting frames.

[0014] Furthermore, a gap is maintained between the two guide plates for the packaging bag to pass through, and the right ends of both guide plates are bent in the opposite direction to form a bend.

[0015] Furthermore, the guide assembly also includes an adjustment structure installed at the bottom of the transmission device for adjusting the height of the two guide plates.

[0016] Furthermore, the adjustment structure includes a cylinder installed at the bottom of the transmission device, a horizontal plate is drivenly connected to the output end of the cylinder, the horizontal plate is horizontally spanned below the transmission device, and the horizontal plate is drivenly connected to the two vertical plates.

[0017] Furthermore, the two vertical plates are slidably connected inside the two limiting plates respectively.

[0018] Furthermore, the adjustment structure also includes transmission plates respectively installed on the left end of the two guide plates and straddling the upper and lower sides of the two encapsulation rollers, for driving the encapsulation rollers to move up and down;

[0019] The front cross-section of the transmission plate is U-shaped, and the transmission plate is rotatably connected to the outside of the connecting sleeve via a bearing.

[0020] A limiting rib is integrally formed on the outer side of the connecting shaft along the vertical direction, and a through hole adapted to the limiting rib and the connecting shaft is opened on the inner peripheral wall of the connecting sleeve.

[0021] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0022] 1. This food packaging machine uses two packaging rollers that are driven to rotate in opposite directions through a transmission structure. When packaging bags of different widths are conveyed to the packaging area by the conveying device, the opening of the packaging bag will be continuously rolled between the two packaging rollers as the rollers rotate. Since the rollers are cylindrical and continuously roll, they can form uniform clamping and heating of any width area of ​​the packaging bag opening. There is no need to adjust the roller spacing for different widths, so continuous packaging from narrow snack bags to wide rice and flour bags can be achieved, avoiding the cumbersome operation of segmented packaging required by traditional fixed clamps.

[0023] 2. This food packaging machine adjusts the structure of the equipment. The cylinder drives the horizontal plate to move up and down. The horizontal plate drives the two vertical plates to slide vertically along the limiting plate. The vertical plates drive the guide plates to move up and down synchronously through the connecting frame. The height of the two guide plates is adjusted to match the width of the packaging bag and the height of the two packaging rollers, so that the height of the two packaging rollers and the two guide plates matches the height of the packaging bag. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the packaging mechanism of this utility model;

[0026] Figure 3 This is a schematic diagram of the internal structure of the encapsulated roller of this utility model;

[0027] Figure 4 This is a schematic diagram of the guide component structure of this utility model;

[0028] Figure 5 This is a schematic diagram of the connection structure between the transmission plate and the connecting sleeve of this utility model;

[0029] Figure 6 This is a schematic diagram of the adjustment structure of this utility model.

[0030] In the diagram: 1. Transmission device; 2. Packaging mechanism; 201. Connecting shaft; 202. Connecting sleeve; 203. Packaging roller; 204. Horizontal plate; 205. Motor; 206. Gear; 3. Guide assembly; 301. Limiting plate; 302. Vertical plate; 303. Connecting frame; 304. Guide plate; 305. Cylinder; 306. Horizontal plate; 307. Transmission plate; 308. Limiting rib; 4. Support frame. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Please see Figure 1-6 In this embodiment, a food packaging machine solves the problems of poor adaptability and low packaging efficiency of traditional packaging machines by adjusting the packaging structure and the guide component 3, and meets the standardized packaging needs of food packaging bags of different widths such as snack bags, rice and flour bags, and pre-made vegetable bags.

[0033] Its structure consists of a transmission device 1, a packaging mechanism 2, a guide assembly 3, and a support frame 4. The components work together to realize the functions of packaging bag transmission, guidance, and heating and sealing.

[0034] Among them, the transmission device 1 is the basic transmission unit of the packaging machine. It adopts a conveyor belt structure to ensure that the packaging bags enter the packaging area continuously and orderly. The packaging mechanism 2 is installed on the upper surface of the transmission device 1, and the guide component 3 is installed on the right side.

[0035] The detailed sealing mechanism 2 is used to achieve heat sealing of the packaging bag, and includes a connecting shaft 201, a connecting sleeve 202, a sealing roller 203, and a support frame 4.

[0036] The support frame 4 is fixed on the upper surface of the transmission device 1 and has a gate-shaped structure, providing stable support for the packaging mechanism 2. The two connecting shafts 201 are rotatably connected inside the support frame 4 through bearings. The outer sides of the two connecting shafts 201 are fitted with connecting sleeves 202. The outer sides of the connecting shafts 201 are integrally formed with limit ribs 308 along the vertical direction.

[0037] In actual installation, the inner peripheral wall of the connecting sleeve 202 is provided with a through hole that is compatible with the limiting rib 308 and the connecting shaft 201, so as to ensure that the connecting sleeve 202 rotates synchronously with the connecting shaft 201 and can slide vertically along the connecting shaft 201.

[0038] Furthermore, a sealing roller 203 is fixed to the outside of the connecting sleeve 202. The inside is hollow and equipped with an electric heating wire. After being powered on, it can quickly heat up to the temperature required for heat sealing. The outer side of the upper sealing roller 203 is provided with at least two convex rings, and the outer side of the lower sealing roller 203 is provided with at least two annular grooves. The convex rings and annular grooves are adapted to each other. During heat sealing, the convex rings are embedded in the grooves to clamp and heat the opening of the packaging bag, ensuring a tight seal.

[0039] In actual setup, the two packaging rollers 203 are driven to rotate in opposite directions through a transmission structure. When packaging bags of different widths are conveyed to the packaging area by the transmission device 1, the opening of the packaging bag will be continuously rolled between the two packaging rollers 203 as the rollers rotate. Since the rollers are cylindrical and continuously roll, they can form uniform clamping and heating of any width area of ​​the packaging bag opening. There is no need to adjust the roller spacing for different widths, so continuous packaging from narrow snack bags to wide rice and flour bags can be achieved, avoiding the cumbersome operation of segmented packaging required by traditional fixed clamps.

[0040] It should be noted that, as a commonly used material for food packaging, its heat-sealing temperature is typically between 120℃ and 180℃. The heating wire of this sealing machine can be adjusted to this range via the temperature control component. Combined with the clamping pressure of the sealing roller 203, effective sealing of the PE bag opening can be achieved.

[0041] More specifically, the transmission structure drives two packaged rollers 203 to rotate in opposite directions, and includes a support plate 204, a motor 205 and a gear 206;

[0042] The bearing plate 204 is horizontally fixed inside the support frame 4, the motor 205 is installed on the top of the bearing plate 204, and the output end is connected to the upper connecting shaft 201 for transmission; gears 206 are fixedly sleeved on the outer side of both connecting shafts 201 and mesh with each other.

[0043] In actual use, when the motor 205 drives the upper connecting shaft 201 to rotate, the gear 206 meshes and drives the lower connecting shaft 201 to rotate in the opposite direction, thereby causing the two packaging rollers 203 to rotate in opposite directions, and in conjunction with the transmission device 1 to transport the packaging bag, so as to achieve continuous packaging.

[0044] More specifically, the guide component 3 is used to precisely guide the packaging bag into the sealing mechanism 2, including a limiting plate 301, a vertical plate 302, a connecting frame 303, a guide plate 304, and an adjustment structure.

[0045] Two limiting plates 301 are fixed on the front and rear sides of the transmission device 1, and a vertical plate 302 is slidably connected inside the limiting plate 301 and can slide vertically along the limiting plate 301; a connecting frame 303 is fixed on the opposite side of the vertical plate 302, and a guide plate 304 is installed on the opposite side of the connecting frame 303.

[0046] In actual setup, a gap is maintained between the two guide plates 304 for the packaging bag to pass through, and the right end is bent in the opposite direction to form a bend, which facilitates the smooth entry of the packaging bag into the guide gap.

[0047] Furthermore, the adjustment structure includes a support plate 204, a motor 205, and a gear 206, and is used to adjust the height of the guide plate 304. The cylinder 305 is installed at the bottom of the transmission device 1, and its output end is connected to the horizontal plate 306. The horizontal plate 306 is horizontally straddling the bottom of the transmission device 1 and is connected to the two vertical plates 302. The transmission plate 307 is installed at the left end of the guide plate 304, is U-shaped and straddles the upper and lower sides of the packaging roller 203, and is rotatably connected to the outside of the connecting sleeve 202 through bearings. When the guide plate 304 moves up and down, the transmission plate 307 drives the connecting sleeve 202 and the packaging roller 203 to move synchronously along the connecting shaft 201, so as to realize the linkage adjustment of the height of the packaging roller 203 and the guide plate 304.

[0048] In actual use, the staff starts the adjustment mechanism according to the width of the food packaging bag to be packaged. Cylinder 305 drives the horizontal plate 306 to move up and down. The horizontal plate 306 drives the two vertical plates 302 to slide vertically along the limiting plate 301. The vertical plates 302 drive the guide plates 304 to move up and down synchronously through the connecting frame 303, adjusting the height of the two guide plates 304 to match the width of the packaging bag. Simultaneously, the guide plates 304 drive the connecting sleeve 202 and the packaging roller 203 to slide vertically along the connecting shaft 201 through the transmission plate 307, matching the height of the two packaging rollers 203 with the height of the packaging bag. After adjustment, the packaging rollers 202 are... When the heating wire of device 3 is energized, after the temperature reaches the set value, the transmission device 1 and motor 205 are activated: the transmission device 1 transports the packaging bag containing food. The packaging bag is guided into the gap between the two guide plates 304 by the right end of the guide plate 304 and moves precisely towards the packaging mechanism 2 under the constraint of the guide plate 304; the motor 205 drives the upper connecting shaft 201 to rotate, and drives the lower connecting shaft 201 to rotate in the opposite direction through the meshing of the gear 206. The two packaging rollers 203 rotate in opposite directions, clamping the opening of the packaging bag between the convex ring and the annular groove. The heat generated by the heating wire melts the thermoplastic material at the opening of the packaging bag, and forms a seal with the clamping pressure.

[0049] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0050] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A food packaging machine, characterized in that: Includes a conveying device (1) for conveying food packaging bags; A sealing mechanism (2) for sealing packaging bags is installed on the transmission device (1), and a guide component (3) is installed on the right side of the transmission device (1) and the sealing mechanism (2) for guiding the packaging bags into the interior of the sealing mechanism (2). The packaging mechanism (2) includes a support frame (4) disposed on the transmission device (1). The support frame (4) is rotatably connected to two connecting shafts (201) via bearings. A connecting sleeve (202) is sleeved on the outer side of each of the two connecting shafts (201). A packaging roller (203) is disposed on the outer side of each of the two connecting sleeves (202). At least two protruding rings are disposed on the outer side of one of the packaging rollers (203). Corresponding to at least two protruding rings, at least two annular grooves are opened on the outer side of the other packaging roller (203) and are adapted to at least two cams respectively. The packaging mechanism (2) also includes a transmission structure mounted on the support frame (4) for driving the two packaging rollers to rotate in opposite directions.

2. The food packaging machine according to claim 1, characterized in that: Both of the encapsulation rollers (203) are hollow inside, and an electric heating wire is provided inside the encapsulation rollers (203).

3. A food packaging machine according to claim 1, characterized in that: The transmission structure includes a bearing plate (204) arranged laterally inside the support frame (4), and a motor (205) with its output end connected to one of the connecting shafts (201) is installed on the top of the bearing plate (204). Gears (206) are fixedly sleeved on the outer side of both connecting shafts (201), and the two gears (206) mesh with each other.

4. A food packaging machine according to claim 1, characterized in that: The guide assembly (3) includes a limiting plate (301) disposed on the front and rear sides of the transmission device (1). A vertical plate (302) is installed inside each of the two limiting plates (301). A connecting frame (303) is provided on the opposite side of each of the two vertical plates (302). A guide plate (304) is installed on the opposite side of each of the two connecting frames (303).

5. A food packaging machine according to claim 4, characterized in that: A gap is maintained between the two guide plates (304) for the packaging bag to pass through, and the right ends of the two guide plates (304) are bent in opposite directions to form a bend.

6. A food packaging machine according to claim 4, characterized in that: The guide assembly (3) also includes an adjustment structure installed at the bottom of the transmission device (1) for adjusting the height of the two guide plates (304).

7. A food packaging machine according to claim 6, characterized in that: The adjustment structure includes a cylinder (305) installed at the bottom of the transmission device (1), and a horizontal plate (306) is connected to the output end of the cylinder (305). The horizontal plate (306) is horizontally arranged below the transmission device (1), and the horizontal plate (306) is connected to the two vertical plates (302).

8. A food packaging machine according to claim 7, characterized in that: The two vertical plates (302) are slidably connected inside the two limiting plates (301).

9. A food packaging machine according to claim 7, characterized in that: The adjustment structure also includes transmission plates (307) installed on the left end of the two guide plates (304) and spanning the upper and lower sides of the two encapsulation rollers (203) respectively, for driving the encapsulation rollers (203) to move up and down; The front cross-section of the transmission plate (307) is U-shaped, and the transmission plate (307) is rotatably connected to the outside of the connecting sleeve (202) by bearings; A limiting rib (308) is integrally formed on the outer side of the connecting shaft (201) in the vertical direction, and a through hole adapted to the limiting rib (308) and the connecting shaft (201) is provided on the inner peripheral wall of the connecting sleeve (202).

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