Heat sealing machine for packaging

Abstract

The utility model relates to the technical field of heat sealing machines, and discloses a packaging heat sealing machine which comprises a rack, a conveying device is arranged on the rack, a longitudinal sealing assembly and a transverse sealing assembly are sequentially arranged on the rack in the Y-axis direction, and the longitudinal sealing assembly comprises a pressure adjusting unit arranged on the rack; the pressure adjusting unit comprises a linear actuator arranged on the rack, a pressure sensor is arranged at the movable end of the linear actuator, a width adjusting unit is arranged at the lower end of the pressure sensor, and the width adjusting unit comprises a supporting seat arranged on the lower side of the pressure sensor; through cooperative use of the rack, the conveying device, the longitudinal sealing assembly and the transverse sealing assembly, the edge sealing pressure of the edge sealing unit is monitored in real time through a pressure sensor, when the edge sealing pressure is smaller than a threshold value, a linear actuator drives a two-way screw to move up and down, the position of a heat sealing wheel is adjusted, and the heat sealing edge sealing strength and pressure are guaranteed; the method has the effects of good applicability and high edge sealing strength.

Description

Technical Field

[0001] The present application relates to the technical field of heat sealers, and in particular to a heat sealer for packaging. Background Art

[0002] In the packaging industry, heat sealers are a commonly used sealing equipment and are widely used in sealing operations of various packaging materials. At present, there are various heat sealers on the market, including different types of heat seal knives and working principles. Common heat seal knives include horizontal knives and vertical knives, which play different roles in the heat sealing process. The horizontal knife moves down to cut and complete the heat sealing, while the vertical knife is divided into two types: rotary crimping heat sealing and downward crimping heat sealing.

[0003] Rotary crimping heat sealing is an efficient heat sealing method. The longitudinal knife completes the heat sealing through the heat sealing wheel and the packaging material through rotational contact. It is suitable for high-speed production lines. However, in the actual production process, the contact pressure between the heat sealing wheel and the packaging material is easily affected by factors such as the wear of the heat sealing wheel, the thickness change of the material, and the fluctuation of the production speed, resulting in unstable edge sealing pressure, thereby affecting the quality of heat sealing.

[0004] The above information disclosed in the background technology is only used to increase the understanding of the background technology of the present application, and therefore, it may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0005] In order to solve the problem that rotary crimping heat sealing is prone to unstable edge sealing pressure, thereby affecting the heat sealing quality, the present application provides a heat sealing machine for packaging.

[0006] The present application provides a packaging heat sealing machine that adopts the following technical solution:

[0007] A heat sealing machine for packaging, comprising a frame, a conveying device, a longitudinal sealing component and a transverse sealing component;

[0008] Wherein, the conveying device is arranged on the frame and is used to convey the plastic packaging film and the objects to be packaged;

[0009] The longitudinal sealing assembly includes a support seat that moves along the Z axis, and a plurality of pressure sensors are arranged on the support seat to detect the edge sealing pressure and provide real-time feedback to the terminal control to adjust the edge sealing pressure;

[0010] The support seat is provided with a plurality of heat-sealing wheels moving along the X-axis for sealing the edge of the plastic packaging film along the Y-axis;

[0011] The transverse sealing assembly comprises a heat sealing knife moving along the Z axis, which is used for cutting the edge of the plastic packaging film along the X axis.

[0012] Preferably, a plurality of linear actuators are provided on the frame and connected to the support seat, and the pressure sensor is located between the movable end of the linear actuator and the support seat. The linear actuator detects the edge sealing pressure and feeds back to the terminal control in real time to adjust the edge sealing pressure of the heat sealing wheel.

[0013] Preferably, a spline shaft is rotatably provided inside the support seat, and the heat sealing wheel is slidingly sleeved on the spline shaft, so that when the heat sealing wheel moves along the X-axis, it can also rotate along the axis.

[0014] Preferably, the spline shaft is transmission-connected to a power device, and the heat-sealing wheel is electrically connected to an external power source.

[0015] Preferably, the heat sealing wheel and the heat sealing knife are distributed in sequence along the Y-axis direction.

[0016] In summary, this application includes the following beneficial technical effects:

[0017] Through the coordinated use of the frame, the conveying device, the longitudinal sealing component and the transverse sealing component, the positions of the two adjacent heat sealing wheels are adjusted as needed to adapt to the edge sealing of packages of different widths. The heat sealing wheels are rotated to complete high-speed edge sealing. During edge sealing, the edge sealing pressure of the edge sealing unit is monitored in real time by a pressure sensor. When the edge sealing pressure is less than the threshold, the linear actuator is controlled to drive the bidirectional screw to move up and down to adjust the position of the heat sealing wheel and ensure the heat sealing edge strength and pressure. Compared with the existing technology, the method has good applicability, high edge sealing efficiency and high edge sealing strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of a three-dimensional structure from a first-view perspective of an embodiment of the application;

[0019] Figure 2 is a schematic diagram of a second perspective stereoscopic structure of an embodiment of the application;

[0020] Figure 3 It is a schematic diagram of the three-dimensional structure from a third perspective of an embodiment of the application.

[0021] Explanation of the reference numerals: 1. Frame; 2. Conveying device; 3. Longitudinal sealing assembly; 301. Pressure regulating unit; 3011. Linear actuator; 3012. Pressure sensor; 302. Width adjusting unit; 3021. Support seat; 3022. Bidirectional screw; 3023. Spline shaft; 3024. Adjusting motor; 303. Edge sealing unit; 3031. Wheel frame; 3032. Conductive ring; 3033. Heat sealing wheel; 3034. Conductive brush; 304. Driving motor; 4. Horizontal sealing assembly; 401. Telescopic cylinder; 402. Knife holder; 403. Heat sealing knife. DETAILED DESCRIPTION

[0022] The following is combined with Figure 1-3This application is described in further detail.

[0023] The present application embodiment discloses a heat sealer for packaging. Figure 1-3 A packaging heat sealing machine includes a frame 1, a conveying device 2 is installed on the frame 1, a longitudinal sealing component 3 and a transverse sealing component 4 are sequentially installed on the frame 1 along the Y-axis direction, the longitudinal sealing component 3 and the transverse sealing component 4 are both located above the conveying device 2, the longitudinal sealing component 3 includes a pressure regulating unit 301 installed on the frame 1, the pressure regulating unit 301 includes a linear actuator 3011 installed on the frame 1, a pressure sensor 3012 is installed at the movable end of the linear actuator 3011, a width adjusting unit 302 is installed at the lower end of the pressure sensor 3012, and the width adjusting unit 302 It includes a support seat 3021 installed at the lower side of the pressure sensor 3012, and detects the edge sealing pressure through the linear actuator 3011, and feeds back to the terminal control in real time to adjust the edge sealing pressure of the edge sealing unit 303. The lower end of the support seat 3021 is rotatably installed on the bidirectional screw 3022. Both ends of the bidirectional screw 3022 are provided with the edge sealing unit 303. The positions of the two heat sealing wheels 3033 are adjusted through the bidirectional screw 3022 to adapt to the edge sealing of packages with different widths. The linear actuator 3011 can select a suitable servo electric cylinder or telescopic cylinder as needed;

[0024] By adopting the above technical solution, the positions of the two heat sealing wheels 3033 are adjusted as needed to adapt to packaging edge sealing of different widths. The heat sealing wheels 3033 are rotated to complete high-speed edge sealing. During edge sealing, the edge sealing pressure of the edge sealing unit 303 is monitored in real time by the pressure sensor 3012. When the edge sealing pressure is less than the threshold, the linear actuator 3011 drives the bidirectional screw 3022 to move up and down to adjust the position of the heat sealing wheel 3033 and ensure the heat sealing edge strength and pressure.

[0025] Reference Figure 2 The conveying device 2 is composed of a conveyor belt and a plurality of transmission rollers mounted on the conveyor belt. Two adjacent transmission rollers are connected by a belt transmission unit or a chain transmission unit. The transmission rollers are driven by an external driving device to drive the conveyor belt to rotate, thereby conveying the plastic packaging film and the objects to be packaged.

[0026] Reference Figure 2 A spline shaft 3023 is rotatably installed on the lower side of the support seat 3021. One end of the bidirectional screw 3022 passes through the support seat 3021 and is connected to an adjusting motor 3024. The bidirectional screw 3022 is driven by the adjusting motor 3024 to drive the edge sealing unit 303 to move, and the positions of the two heat sealing wheels 3033 are adjusted to adapt to the edge sealing of packages with different widths.

[0027] Reference Figure 2The edge sealing unit 303 includes a wheel frame 3031 threadedly mounted on the bidirectional screw 3022, and a heat sealing wheel 3033 is rotatably mounted on the lower end of the wheel frame 3031. The heat sealing wheel 3033 is slidably mounted on the spline shaft 3023. The end of the spline shaft 3023 passes through the support seat 3021 and is connected to a driving motor 304. The spline shaft 3023 is driven to rotate by the driving motor 304, thereby driving the heat sealing wheel 3033 to rotate.

[0028] Reference Figure 3 Conductive brushes 3034 are installed on both sides of the heat sealing wheel 3033, and two conductive rings 3032 adapted to the conductive brushes 3034 are installed on the inner side of the wheel frame 3031. The conductive rings 3032 are in sliding contact with the conductive brushes 3034 to achieve continuous power supply during rotation.

[0029] Reference Figure 2 The transverse sealing assembly 4 includes a heat sealing knife 403 for heat sealing and cutting, and a knife holder 402 is installed on the heat sealing knife 403. A plurality of telescopic cylinders 401 are installed on the upper end of the frame 1. The movable end of the telescopic cylinder 401 is fixedly connected to the knife holder 402. The telescopic cylinder 401 is extended and retracted to drive the knife holder 402 and the heat sealing knife 403 to move up and down, so as to perform heat sealing and cutting along the X-axis.

[0030] The implementation principle of a packaging heat sealing machine in the embodiment of the present application is as follows: the positions of the two heat sealing wheels 3033 are adjusted as needed, the bidirectional screw 3022 is driven by the adjusting motor 3024 to drive the wheel frame 3031 and the heat sealing wheels 3033 to move, the positions of the two heat sealing wheels 3033 are adjusted to adapt to packaging edges of different widths, the spline shaft 3023 is driven to rotate by the driving motor 304, and then the heat sealing wheels 3033 are driven to rotate. During packaging, the conveying device 2 conveys the packaging film and the packaged product, uses the packaging film to cover the product up and down, passes through the heat sealing wheels 3033 in turn, and uses the heat sealing wheels 3033 to seal the product. 3 rotates to complete high-speed edge sealing. During edge sealing, the edge sealing pressure of the edge sealing unit 303 is monitored in real time through the pressure sensor 3012. When the edge sealing pressure is less than the threshold, the linear actuator 3011 drives the bidirectional screw 3022 to move up and down to adjust the height of the heat sealing wheel 3033 and change the heat sealing pressure. When the pressure sensor 3012 detects that the pressure reaches the threshold, the linear actuator 3011 stops adjusting to ensure the heat sealing edge strength and pressure. The telescopic cylinder 401 is telescopically extended to drive the knife holder 402 and the heat sealing knife 403 to move up and down to perform heat sealing and cutting along the X-axis to complete the heat sealing packaging.

[0031] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0032] Secondly: In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0033] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

[0034] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A packaging heat sealing machine, comprising a frame (1), a conveying device (2), a longitudinal sealing component (3) and a transverse sealing component (4); in, The conveying device (2) is arranged on the frame (1) and is used to convey the plastic packaging film and the objects to be packaged; The longitudinal sealing component (3) comprises a support seat (3021) movable along the Z axis, and a plurality of pressure sensors (3012) are arranged on the support seat (3021) for detecting the edge sealing pressure and providing real-time feedback to the terminal control to adjust the edge sealing pressure; The support seat (3021) is provided with a plurality of heat-sealing wheels (3033) that move along the X-axis and are used to seal the edges of the plastic packaging film along the Y-axis; The transverse sealing assembly (4) comprises a heat sealing knife (403) moving along the Z axis and used for cutting the edge of the plastic packaging film along the X axis.

2. A packaging heat sealer according to claim 1, characterized in that: A plurality of linear actuators (3011) are arranged on the frame (1) and are connected to the support seat (3021). The pressure sensor (3012) is located between the movable end of the linear actuator (3011) and the support seat (3021). The linear actuator (3011) detects the edge sealing pressure and feeds back the information to the terminal control in real time to adjust the edge sealing pressure of the heat sealing wheel (3033).

3. A packaging heat sealer according to claim 1, characterized in that: A spline shaft (3023) is rotatably arranged inside the support seat (3021), and the heat sealing wheel (3033) is slidably sleeved on the spline shaft (3023), so that when the heat sealing wheel (3033) moves along the X-axis, it can also rotate in a circle along the axis.

4. A packaging heat sealer according to claim 3, characterized in that: The spline shaft (3023) is transmission-connected to a power device, and the heat-sealing wheel (3033) is electrically connected to an external power source.

5. A packaging heat sealer according to claim 1, characterized in that: The heat sealing wheel (3033) and the heat sealing knife (403) are distributed in sequence along the Y-axis direction.

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