A vacuum sealer

Abstract

The present invention provides a vacuum sealer, which includes a chassis. A vacuum pumping mechanism is provided on one side of the chassis, and a feeding mechanism and a material pressing mechanism are provided inside the chassis. The feeding mechanism includes two linear slide rails, a first support rod respectively connected to the sliders of the two linear slide rails, a mounting cross plate horizontally connected between the free ends of the two first support rods, driving cylinders respectively mounted on opposite sides of the mounting cross plate, first telescopic rods respectively connected to the power output ends of the two driving cylinders, and a pressing plate horizontally connected between the free ends of the two first telescopic rods. A lifting drive motor is mounted on the convex platform, and a bearing plate is connected to the power output end of the lifting drive motor. The material pressing mechanism includes telescopic motors respectively provided on opposite sides of the vacuum pumping mechanism, telescopic arms respectively power-connected to the two telescopic motors, rotary motors respectively mounted on the free ends of the two telescopic arms, and pressing plates respectively connected to the power output ends of the two rotary motors. It saves the physical strength of operators and ensures the flatness of heat sealing.

Description

Technical Field

[0001] The invention relates to the technical field of vacuum sealing machines, in particular to a vacuum sealing machine capable of automatically loading materials. Background Art

[0002] The vacuum sealer is a machine that puts food into a packaging bag, extracts the air in the packaging bag, and completes the sealing process after reaching a predetermined vacuum degree. It can have the following functions: 1. Vacuum the bag + seal it; 2. Seal the bag mouth directly; 3. Vacuum the bag + fill it with nitrogen or other gases + seal it. In the prior art, vacuum sealers generally take the bag manually, open the upper cover of the sealer, and then put the bag into the vacuum slot of the sealer. After covering the upper cover, the vacuum operation can be carried out, and then the opening of the bag is heat-sealed by the heat strip set in the vacuum sealer. The defects of this conventional operation method are: the operator is required to hold the bag until the entire vacuuming and heat-sealing operations are completed, which will consume a lot of physical strength of the operator; in addition, the operator will only take the two sides of the bag manually, resulting in the bag opening not being flat enough during heat sealing. After the heat sealing is completed, there will be many wrinkles at the bag mouth, affecting the overall appearance of the bag. In view of this situation, it is urgent to solve it. Summary of the invention

[0003] Based on this, the object of the present invention is to provide a vacuum sealing machine, which can realize automatic loading, save the physical strength of operators, and ensure the flatness of heat sealing.

[0004] The present invention provides a vacuum sealer, which includes a chassis. A vacuum pumping mechanism is arranged on one side of the chassis, and a feeding mechanism and a material pressing mechanism are arranged on the other side of the chassis opposite to the vacuum pumping mechanism. The feeding mechanism includes two linear sliding rails, a first support rod respectively connected to the sliding seats of the two linear sliding rails, a mounting cross plate horizontally connected between the free ends of the two first support rods, driving cylinders respectively mounted on opposite sides of the mounting cross plate, first telescopic rods respectively connected to the power output ends of the two driving cylinders, and a pressing plate horizontally connected between the free ends of the two first telescopic rods. A boss is formed on one side of the middle of the mounting cross plate, and a lifting driving motor is mounted on the boss. The power output end of the lifting driving motor is connected to a placing plate. The material pressing mechanism includes telescopic motors respectively arranged on opposite sides of the vacuum pumping mechanism, telescopic arms respectively power-connected to the two telescopic motors, rotary motors respectively mounted on the free ends of the two telescopic arms, and pressing plates respectively connected to the power output ends of the two rotary motors. The vacuum pumping mechanism includes a lower seat body and a sealing upper cover. A vacuum pumping groove is formed on the upper surface of the lower seat body. Lifting motors are arranged on opposite sides of the upper surface of the chassis. The power output ends of the two lifting motors are both connected to lifting shafts, and the free ends of the two lifting shafts are both connected to the sealing upper cover. A plurality of air extraction columns protrude from the bottom of the inner cavity of the vacuum pumping groove. An elastic sealing ring is arranged on the upper surface of the lower seat body around the opening of the vacuum pumping groove. An elastic sealing ring is arranged at a position corresponding to the edge of the opening of the vacuum pumping groove on the lower surface of the sealing upper cover. A lower hot pressing strip is arranged on the upper surface of the lower seat body near the vacuum pumping groove on the feeding side, and an upper hot pressing strip is arranged at a position corresponding to the lower hot pressing strip on the lower surface of the sealing upper cover.

[0005] Preferably, a soft rubber cushion layer is arranged along the length direction on the side of the mounting cross plate facing the pressing plate, and a soft rubber cushion layer is arranged along the length direction on the side of the pressing plate facing the mounting cross plate.

[0006] Preferably, a vacuum pump, a pressure relief mechanism and a control circuit corresponding to the vacuum pumping groove are arranged in the lower seat body. The air extraction columns are sequentially connected to the pressure relief mechanism and the vacuum pump. The control circuit is electrically connected to the vacuum pump and the pressure relief mechanism respectively.

[0007] Preferably, a heating mechanism is arranged at a position corresponding to the lower hot pressing strip in the lower seat body, and a heating mechanism is arranged at a position corresponding to the upper hot pressing strip in the sealing upper cover.

[0008] Preferably, a photoelectric sensor is mounted on the side of the middle of the mounting cross plate facing the pressing plate.

[0009] Preferably, the relative distance between the two pressing plates is set to M, and the width of the bag mouth of the packaging bag is set to N, and M < 1 / 5N.

[0010] The beneficial effects of the present invention are as follows: Place the packaging bag on the feeding mechanism. The feeding mechanism clamps the opening of the packaging bag and transports it to a position close to the vacuum pumping mechanism. The pressing mechanism presses the opening of the packaging bag by 90° so that the bag mouth of the packaging bag correspondingly extends into the position of the vacuum pumping groove. After the sealing upper cover and the lower seat body are closed, vacuum pumping is carried out, and then the lower hot pressing strip and the upper hot pressing strip cooperate to complete the sealing of the bag mouth of the packaging bag. Subsequently, the feeding mechanism drives the packaging bag to reset to the starting position, which is fully automatic operation and saves the physical strength of the operators. By installing the cross plate and the pressing plate, the bag mouth of the packaging bag is unfolded and horizontally pressed, and then the bag mouth of the packaging bag is pressed and deflected by the pressing plates on both sides, so as to ensure that the bag mouth of the packaging bag is in a flat state during vacuum pumping and heat sealing, and ensure the flatness of the heat seal. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a three-dimensional view of the present invention.

[0012] Figure 2 is a three-dimensional view of the present invention (from another perspective).

[0013] The reference numerals are: chassis 10, telescopic arm 11, rotating motor 12, pressing plate 13, linear slide rail 14, soft rubber cushion layer 15, lifting motor 16, lifting drive motor 17, first support rod 18, driving cylinder 19, mounting cross plate 20, first telescopic rod 21, pressing plate 22, lower seat body 23, lower hot pressing strip 24, vacuum pumping groove 25, sealing upper cover 26, elastic sealing ring 27, lifting shaft 28, telescopic motor 29, bearing plate 30, convex platform 31. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0014] In order to further understand the features, technical means and the specific purposes and functions achieved by the present invention, the present invention will be further described in detail below in conjunction with the specific embodiments and the drawings.

[0015] In the present invention, unless otherwise clearly defined and limited, the terms "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0016] Please refer to Figure 1-2As shown in the figure, a vacuum sealer includes a chassis 10. A vacuum pumping mechanism is provided on one side of the chassis 10, and a feeding mechanism and a material pressing mechanism are provided on the other side of the chassis 10 opposite to the vacuum pumping mechanism. A control device is provided on the chassis 10. The feeding mechanism, the material pressing mechanism, the vacuum pumping mechanism, the photoelectric sensor, and the heating mechanism are all connected to the control device.

[0017] The feeding mechanism includes two linear slide rails 14, a first support rod 18 respectively connected to the sliders of the two linear slide rails 14, a mounting cross plate 20 horizontally connected between the free ends of the two first support rods 18, driving cylinders 19 respectively mounted on opposite sides of the mounting cross plate 20, first telescopic rods 21 respectively connected to the power output ends of the two driving cylinders 19, and a pressing plate 22 horizontally connected between the free ends of the two first telescopic rods 21. On one side of the middle of the mounting cross plate 20, a boss 31 is formed, and a lifting drive motor 17 is mounted on the boss 31. The power output end of the lifting drive motor 17 is connected to a bearing plate 30. A photoelectric sensor is mounted on one side of the middle of the mounting cross plate 20 close to the pressing plate 22.

[0018] The material pressing mechanism includes telescopic motors 29 respectively provided on opposite sides of the vacuum pumping mechanism, telescopic arms 11 respectively power-connected to the two telescopic motors 29, rotary motors 12 respectively mounted on the free ends of the two telescopic arms 11, and pressing plates 13 respectively connected to the power output ends of the two rotary motors 12. The relative distance between the two pressing plates 13 is set to M, and the width of the bag opening of the packaging bag is set to N, where M < 1 / 5N.

[0019] The vacuum pumping mechanism includes a lower seat body 23 and a sealing upper cover 26. A vacuum pumping groove 25 is formed on the upper surface of the lower seat body 23. Lifting motors 16 are provided on opposite sides of the upper surface of the chassis 10. The power output ends of the two lifting motors 16 are both connected to lifting shafts 28, and the free ends of the two lifting shafts 28 are both connected to the sealing upper cover 26. Multiple air extraction columns protrude from the bottom of the inner cavity of the vacuum pumping groove 25. A vacuum pump, a pressure relief mechanism, and a control circuit corresponding to the vacuum pumping groove 25 are provided in the lower seat body 23. The air extraction columns are sequentially connected to the pressure relief mechanism and the vacuum pump. The control circuit is electrically connected to the vacuum pump and the pressure relief mechanism respectively.

[0020] An elastic sealing ring 27 is provided on the upper surface of the lower seat body 23 around the opening of the vacuum pumping groove 25; an elastic sealing ring is provided at a position corresponding to the edge of the opening of the vacuum pumping groove 25 on the lower surface of the sealing upper cover 26. By providing the elastic sealing ring 27, the sealing degree after the lower seat body 23 and the sealing upper cover 26 are closed is ensured.

[0021] A lower hot pressing strip 24 is provided at a position on the upper surface of the lower base body 23 near the vacuum pumping groove 25 on the feeding side, and an upper hot pressing strip is provided at a position on the lower surface of the sealing upper cover 26 corresponding to the lower hot pressing strip 24. A heating mechanism is provided at a position in the lower base body 23 corresponding to the lower hot pressing strip 24; a heating mechanism is provided at a position in the sealing upper cover 26 corresponding to the upper hot pressing strip. The heating mechanism can be set as a heating wire or a heating rod.

[0022] A soft rubber cushion layer 15 is provided along the length direction on the side of the mounting cross plate 20 facing the pressing plate 22, and a soft rubber cushion layer 15 is provided along the length direction on the side of the pressing plate 22 facing the mounting cross plate 20. By providing the soft rubber cushion layer 15, the bag mouth of the packaging bag is pressed tightly through the soft rubber cushion layers 15 on both sides to ensure the pressing tightness.

[0023] The operation steps of the present invention are as follows:

[0024] 1. A person places the packaging bag between the mounting cross plate 20 and the pressing plate 22, and supports the bottom of the packaging bag through the bearing plate 30; the lifting drive motor 17 can adjust the relative height of the bearing plate 30, so that it can be used for different sizes of packaging bags;

[0025] 2. The driving cylinder 19 outputs power, and drives the pressing plate 22 to move towards the mounting cross plate 20 through the first telescopic rod 21 to clamp and press the bag mouth of the packaging bag;

[0026] 3. The linear slide rail 14 drives the mounting cross plate 20, the pressing plate 22, and the bearing plate 30 to move towards the feeding port of the vacuum pumping mechanism through the first support rod 18;

[0027] 4. In the initial state, the rotating motor 12 drives the pressing plate 13 to be in an upright state. When the packaging bag moves to the corresponding position, the rotating motor 12 drives the pressing plate 13 to rotate 90° to be converted into a horizontal placement state. The telescopic motor 29 outputs power, and drives the pressing plates 13 on both sides to move a predetermined distance towards the entrance of the vacuum pumping mechanism through the telescopic arms 11, so that the bag mouth of the packaging bag enters the vacuum pumping groove 25;

[0028] 5. The lifting motor 16 outputs power, and drives the sealing upper cover 26 to move downward through the lifting shaft 28, so as to cover the lower base body 23; at this time, the pressing mechanism resets to prepare for the next pressing action;

[0029] 6. Vacuum pumping operation is started in the vacuum pumping groove 25;

[0030] 7. After the vacuum pumping action is completed, the lower hot pressing strip 24 and the upper hot pressing strip heat-seal the bag mouth of the packaging bag;

[0031] 8. After the heat sealing operation is completed, the sealing upper cover 26 rises and resets. The linear slide rail 14 drives the mounting cross plate 20, the pressing plate 22, the placing plate 30 and the packaging bag to move and reset away from the vacuum pumping mechanism through the first support rod 18;

[0032] 9. After the mounting cross plate 20 and the pressing plate 22 are separated, the operator takes away the packaging bag; and the operation is repeated in this way.

[0033] The full-automatic operation of the present invention saves the physical strength of operators; the bag mouth of the packaging bag is unfolded and horizontally pressed by the mounting cross plate and the pressing plate, and then the bag mouth of the packaging bag is pressed obliquely by the pressing plates on both sides, so as to ensure that the bag mouth of the packaging bag is in a flat state during vacuum pumping and heat sealing, and ensure the flatness of the heat seal.

[0034] The above embodiments only represent one implementation manner of the present invention, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the appended claims.

Claims

1. A vacuum sealer, comprising a chassis (10), and a vacuum pumping mechanism is provided on one side of the chassis (10). Characterized in that: On the other side of the chassis (10) opposite to the vacuum pumping mechanism, a feeding mechanism and a material pressing mechanism are provided; The feeding mechanism includes two linear slide rails (14), a first support rod (18) respectively connected to the sliding seats of the two linear slide rails (14), a mounting cross plate (20) horizontally connected between the free ends of the two first support rods (18), driving cylinders (19) respectively mounted on opposite sides of the mounting cross plate (20), first telescopic rods (21) respectively connected to the power output ends of the two driving cylinders (19), and a pressing plate (22) horizontally connected between the free ends of the two first telescopic rods (21); on one side of the middle of the mounting cross plate (20), a boss (31) is formed, and a lifting driving motor (17) is mounted on the boss (31), and a bearing plate (30) is connected to the power output end of the lifting driving motor (17); The material pressing mechanism includes telescopic motors (29) respectively provided on opposite sides of the vacuum pumping mechanism, telescopic arms (11) respectively power-connected to the two telescopic motors (29), rotary motors (12) respectively mounted on the free ends of the two telescopic arms (11), and pressing plates (13) respectively connected to the power output ends of the two rotary motors (12); The vacuum pumping mechanism includes a lower seat body (23) and a sealing upper cover (26). A vacuum pumping groove (25) is formed on the upper surface of the lower seat body (23). Lifting motors (16) are provided on opposite sides of the upper surface of the chassis (10). The power output ends of the two lifting motors (16) are both connected to lifting shafts (28), and the free ends of the two lifting shafts (28) are both connected to the sealing upper cover (26); multiple air extraction columns protrude from the bottom of the inner cavity of the vacuum pumping groove (25); An elastic sealing ring (27) is provided on the upper surface of the lower seat body (23) around the opening of the vacuum pumping groove (25); an elastic sealing ring is provided at a position corresponding to the opening edge of the vacuum pumping groove (25) on the lower surface of the sealing upper cover (26); A lower hot pressing strip (24) is provided on the upper surface of the lower seat body (23) near the vacuum pumping groove (25) on the feeding side, and an upper hot pressing strip is provided on the lower surface of the sealing upper cover (26) corresponding to the lower hot pressing strip (24).

2. A vacuum sealer according to claim 1, Characterized in that: A soft rubber cushion layer (15) is provided along the length direction on the side of the mounting cross plate (20) facing the pressing plate (22), and a soft rubber cushion layer (15) is provided along the length direction on the side of the pressing plate (22) facing the mounting cross plate (20).

3. A vacuum sealer according to claim 2, Characterized in that: A vacuum pump, a pressure relief mechanism, and a control circuit corresponding to the vacuum pumping groove (25) are arranged in the lower base body (23); the air extraction column is sequentially connected to the pressure relief mechanism and the vacuum pump; the control circuit is electrically connected to the vacuum pump and the pressure relief mechanism respectively.

4. A vacuum sealer according to claim 3, characterized in that: A heating mechanism is arranged at a position corresponding to the lower hot pressing strip (24) in the lower base body (23); a heating mechanism is arranged at a position corresponding to the upper hot pressing strip in the sealing upper cover (26).

5. A vacuum sealer according to claim 4, characterized in that: A photoelectric sensor is installed on one side of the middle part of the mounting cross plate (20) close to the pressing plate (22).

6. A vacuum sealer according to claim 5, characterized in that: The relative distance between the two pressure plates (13) is set to M, the width of the bag mouth of the packaging bag is set to N, and M < 1 / 5N.

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