Hot knife sealing device

Abstract

The utility model discloses a hot knife sealing device which comprises a hot knife assembly, a driving assembly, a pressure adjusting assembly and a control system. The pressure adjusting assembly comprises a pressure adjusting piece, a pressure adjusting plate, a pressure adjusting spring and a pressure sensor. The output end of the pressure adjusting piece is connected with the pressure adjusting plate, one end of the pressure adjusting spring is connected with the pressure adjusting plate, the other end of the pressure adjusting spring is connected with the upper hot knife mechanism, and when the upper hot knife mechanism and the lower hot knife mechanism conduct hot knife sealing on a packaging film, the compression elastic force of the pressure adjusting spring pushes the upper hot knife mechanism to press the packaging film. The pressure sensor is arranged on the pressure adjusting plate and used for detecting the elastic force of the pressure adjusting spring on the pressure adjusting plate. The control system can control the pressure adjusting piece to adjust the pressure on the hot knife mechanism and display the pressure value detected by the pressure sensor. The pressure on the packaging film can be automatically adjusted, product waste caused by multiple trials is avoided, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a sealing equipment technical field, especially a kind of hot knife sealing device. BACKGROUND

[0002] Packaging film mainly refers to the film used for the packaging of goods, usually including polyethylene film, biaxially oriented polyester, BOPP film and CPP film, etc., mainly used for the packaging of food, medicine and textiles. In the prior art, the packaging film needs to be sealed after production to make packaging bags. The traditional sealing method is to seal by hot knife. However, due to the different thicknesses of the packaging film, the hot knife sealing equipment needs to adjust different pressures for different thicknesses of the packaging film. The current hot knife sealing equipment can only manually judge the products sealed by hot sealing. It needs to be adjusted to the appropriate pressure through multiple attempts each time, which causes waste of products and affects production efficiency. SUMMARY

[0003] According to the utility model embodiment, a kind of hot knife sealing device is provided, comprising: hot knife assembly, drive assembly, pressure regulating component and control system;

[0004] The hot knife assembly comprises: a frame, an upper hot knife mechanism and a lower hot knife mechanism;

[0005] The lower hot knife mechanism is fixed on the frame, and the upper hot knife mechanism is arranged above the lower hot knife mechanism. The drive assembly is arranged on the frame. Under the drive of the drive assembly, the upper hot knife mechanism moves towards the lower hot knife mechanism, and the packaging film between the upper hot knife mechanism and the lower hot knife mechanism is sealed by hot knife;

[0006] The pressure regulating component comprises: a pressure regulating piece, a pressure regulating plate, a pressure spring and a pressure sensor;

[0007] The output end of the pressure regulating piece is connected to the pressure regulating plate. One end of the pressure spring is connected to the pressure regulating plate, and the other end is connected to the upper hot knife mechanism. The pressure regulating piece is used to adjust the distance between the pressure regulating plate and the upper hot knife mechanism. When the upper hot knife mechanism and the lower hot knife mechanism seal the packaging film by hot knife, the elastic force of the compressed pressure spring pushes the upper hot knife mechanism to press the packaging film. The pressure sensor is arranged on the pressure regulating plate to detect the elastic force of the pressure spring on the pressure regulating plate.

[0008] The control system can control the pressure regulating piece to adjust the pressure on the hot knife mechanism and display the pressure value detected by the pressure sensor.

[0009] Further, the drive assembly comprises: a drive piece, a pull rod and a support plate.

[0010] The driving member is used for driving the up-and-down movement of the pull rod, one end of the pull rod is connected with the pressure adjusting plate through the lower ironing cutter mechanism, the pull rod is in sliding connection with the lower ironing cutter mechanism, the supporting plate is fixed on the pull rod and located below the upper ironing cutter mechanism and is used for supporting the upper ironing cutter mechanism, under the driving of the driving member, the pull rod pulls the pressure adjusting plate, the upper ironing cutter mechanism is driven to move downwards to seal the packaging film by the ironing cutter, after the sealing of the packaging film is completed, the pull rod pushes the upper ironing cutter mechanism to move upwards to reset.

[0011] Further, the driving assembly further comprises an eccentric wheel, a connecting rod and a hinged member.

[0012] The output end of the driving member is connected with the eccentric wheel and is used for driving the rotation of the eccentric wheel, one end of the connecting rod is connected with the eccentric wheel and the other end is connected with the hinged member, and the hinged member is fixed on one end of the pull rod.

[0013] Further, the driving assembly further comprises a reset spring and a reset plate.

[0014] The reset plate is fixed on the pull rod, and the reset spring is sleeved on the pull rod, one end of the reset spring is connected with the lower ironing cutter mechanism and the other end is connected with the reset plate.

[0015] Further, the upper ironing cutter mechanism and the lower ironing cutter mechanism each comprise an ironing cutter frame, a heating mechanism and an ironing cutter mechanism.

[0016] The heating mechanism is arranged on the ironing cutter frame and is used for heating the ironing cutter mechanism, and the two ironing cutter mechanisms are used for sealing the packaging film.

[0017] Further, the ironing cutter frame is provided with a connecting portion on each side, and the connecting portion is used for being connected with the driving assembly or the pressure adjusting assembly.

[0018] Further, the ironing cutter mechanism comprises a cutter body and a heat-resistant pad.

[0019] The cutter body is arranged on the ironing cutter frame, and the heat-resistant pad is arranged on the outer side of the cutter body and is used for heat transfer during sealing.

[0020] According to the ironing cutter sealing device, the control system can display the pressure value of the ironing cutter mechanism on the packaging film, workers can input the pressure value on the control system, the control system controls the pressure adjusting member to adjust the pressure, the pressure of the ironing cutter mechanism on the packaging film is automatically adjusted to the input value, the purpose of quickly and accurately adjusting the pressure is achieved, product waste caused by multiple attempts is avoided, and production efficiency is improved.

[0021] This application uses a drive assembly to drive the upper heat-sealing mechanism, which in turn seals the packaging film with the lower heat-sealing mechanism. The elastic force of the pressure-adjusting spring pushes the upper heat-sealing mechanism to press the packaging film. The distance between the pressure-adjusting plate and the upper heat-sealing mechanism can be adjusted by the pressure-adjusting component, thereby adjusting the elastic force of the pressure-adjusting spring and changing the pressure of the upper heat-sealing mechanism when sealing the packaging film, thus avoiding damage to the packaging film or unqualified sealing.

[0022] It should be understood that both the foregoing general description and the following detailed description are exemplary and intended to provide further illustration of the claimed technology. Attached Figure Description

[0023] Fig. 1 This is a structural diagram of a hot knife sealing device according to an embodiment of the present utility model;

[0024] Fig. 2 This is a structural diagram of a hot knife sealing device drive assembly according to an embodiment of the present utility model;

[0025] Fig. 3 This is a structural diagram of a pressure regulating component of a hot knife sealing device according to an embodiment of the present invention.

[0026] In the attached diagram, the following labels are used: 1 is the frame, 11 is the upper heat-scalding mechanism, 12 is the lower heat-scalding mechanism, 13 is the heat-scalding holder, 14 is the heating mechanism, 15 is the heat-scalding mechanism, 2 is the drive assembly, 21 is the drive component, 22 is the pull rod, 23 is the support plate, 24 is the eccentric wheel, 25 is the connecting rod, 26 is the hinge, 27 is the return spring, 28 is the return plate, 3 is the pressure regulating assembly, 31 is the pressure regulating component, 32 is the pressure regulating plate, 33 is the pressure regulating spring, and 34 is the pressure sensor. Detailed Implementation

[0027] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, further illustrating the present invention.

[0028] First, combine Figs. 1-3 This invention describes a hot-blade sealing device according to an embodiment of the present invention, used for hot-blade sealing of packaging film.

[0029] like Figs. 1-3 As shown, an embodiment of the present invention provides a hot knife sealing device, comprising: a hot knife assembly, a drive assembly 2, a pressure regulating assembly 3, and a control system;

[0030] The hot knife assembly includes: a frame 1, an upper hot knife mechanism 11, and a lower hot knife mechanism 12;

[0031] The lower hot knife mechanism 12 is fixed on the frame 1, and the upper hot knife mechanism 11 is arranged above the lower hot knife mechanism 12. The drive component 2 is arranged on the frame 1. Under the drive of the drive component 2, the upper hot knife mechanism 11 moves to the lower hot knife mechanism 12 to hot knife seal the packaging film between the upper hot knife mechanism 11 and the lower hot knife mechanism 12.

[0032] The pressure regulating assembly 3 includes: a pressure regulating component 31, a pressure regulating plate 32, and a pressure regulating spring 33;

[0033] The output end of the pressure regulating component 31 is connected to the pressure regulating plate 32. One end of the pressure regulating spring 33 is connected to the pressure regulating plate 32 and the other end is connected to the upper hot knife mechanism 11. The pressure regulating component 31 is used to adjust the distance between the pressure regulating plate 32 and the upper hot knife mechanism 11. When the upper hot knife mechanism 11 and the lower hot knife mechanism 12 perform hot knife sealing on the packaging film, the compression force of the pressure regulating spring 33 pushes the upper hot knife mechanism 11 to press on the packaging film.

[0034] The control system can control the pressure regulating component 31 to adjust the pressure on the hot knife mechanism and display the pressure value detected by the pressure sensor.

[0035] This application uses a control system to display the pressure value of the hot-scalpel mechanism 11 on the packaging film. Workers can input the pressure value into the control system, which will then control the pressure regulating component 31 to adjust the pressure. This automatically adjusts the pressure of the hot-scalpel mechanism 11 on the packaging film to the input value, achieving rapid and accurate pressure adjustment. This avoids product waste caused by multiple attempts and improves production efficiency.

[0036] This application drives the upper heat-sealing mechanism 11 through the drive component 2, so that the upper heat-sealing mechanism 11 and the lower heat-sealing mechanism 12 seal the packaging film. The elastic force of the pressure regulating spring 33 pushes the upper heat-sealing mechanism 11 to press the packaging film. The distance between the pressure regulating plate 32 and the upper heat-sealing mechanism 11 can be adjusted by the pressure regulating component 31, thereby adjusting the elastic force of the pressure regulating spring 33 and changing the pressure of the upper heat-sealing mechanism 11 when sealing the packaging film, so as to avoid damage to the packaging film or unqualified sealing.

[0037] like Figs. 1-2 As shown, the drive assembly 2 includes: a drive component 21, a pull rod 22, and a support plate 23;

[0038] The driving member 21 is used for driving the up-and-down movement of the pull rod 22, one end of the pull rod 22 is connected with the pressure adjusting plate 32 through the lower ironing knife mechanism 12, the pull rod 22 is in sliding connection with the lower ironing knife mechanism 12, the supporting plate 23 is fixed on the pull rod 22 and is located below the upper ironing knife mechanism 11 and is used for supporting the upper ironing knife mechanism 11, under the driving of the driving member 21, the pull rod 22 pulls the pressure adjusting plate 32, the upper ironing knife mechanism 11 is moved downwards to seal the packaging film by ironing, after the sealing of the packaging film is completed, the pull rod 22 pushes the upper ironing knife mechanism 11 to move upwards to reset.

[0039] The driving assembly 2 further comprises an eccentric wheel 24, a connecting rod 25 and a hinged member 26.

[0040] The output end of the driving member 21 is connected with the eccentric wheel 24 and is used for driving the rotation of the eccentric wheel 24, one end of the connecting rod 25 is connected with the eccentric wheel 24 and the other end is connected with the hinged member 26, the hinged member 26 is fixed on one end of the pull rod 22.

[0041] The driving member 21 drives the rotation of the eccentric wheel 24, the connecting rod 25 is driven to move by the eccentric wheel 24, the up-and-down reciprocating driving of the pull rod 22 is realized, the supporting plate 23 can support the upper ironing knife mechanism 11, when the distance between the pressure adjusting plate 32 and the upper ironing knife mechanism 11 is adjusted, the upper ironing knife mechanism 11 is prevented from moving on the pull rod 22.

[0042] As shown in Figs. 1-2 The driving assembly 2 further comprises a reset spring 27 and a reset plate 28.

[0043] The reset plate 28 is fixed on the pull rod 22, the reset spring 27 is sleeved on the pull rod 22, one end of the reset spring 27 is connected with the lower ironing knife mechanism 12 and the other end is connected with the reset plate 28.

[0044] After the sealing of the packaging film is completed, the reset plate 28 is moved upwards by the elastic force of the reset spring 27, the pull rod 22 pushes the upper ironing knife mechanism 11 to reset.

[0045] As shown in Fig. 3 The pressure adjusting assembly 3 comprises a pressure sensor 34.

[0046] The pressure sensor 34 is arranged on the pressure adjusting plate 32 and is used for detecting the elastic force of the pressure adjusting spring 33 on the pressure adjusting plate 32.

[0047] The pressure adjusting plate 32 is driven to move by the pressure adjusting member 31, the distance between the pressure adjusting plate 32 and the upper ironing knife mechanism 11 is adjusted, the pressure sensor 34 can detect the acting force of the pressure adjusting spring 33 on the pressure adjusting plate 32, so that the pressure of the upper ironing knife mechanism 11 on the packaging film when the packaging film is sealed can be detected. In the embodiment, the pressure adjusting member 31 can be a speed reducer.

[0048] As shown in Fig. 1As shown, the upper searing knife mechanism 11 and the lower searing knife mechanism 12 each comprise a searing knife holder 13, a heating mechanism 14 and a searing knife mechanism 15;

[0049] The heating mechanism 14 is arranged on the searing knife holder 13, and the heating mechanism 14 is used for heating the searing knife mechanism 15, and the two searing knife mechanisms 15 are used for sealing the packaging film.

[0050] The searing knife holder 13 is provided with a connecting portion on each side, and the connecting portion is used for being connected with the driving assembly 2 or the pressure adjusting assembly 3.

[0051] The searing knife mechanism 15 comprises a knife body and a heat-resistant pad.

[0052] The knife body is arranged on the searing knife holder 13, and the heat-resistant pad is arranged on the outer side of the knife body and is used for heat transfer during sealing.

[0053] The knife body is heated by the heating mechanism 14, and the heat on the knife body is transferred through the heat-resistant pad to seal the packaging film, and the heat-resistant pad is used to avoid the direct contact between the knife body and the packaging film, thereby avoiding the damage of the packaging film.

[0054] The above, with reference to Figs. 1-3 The searing knife sealing device according to the embodiment of the present application is described, the driving assembly 2 drives the upper searing knife mechanism 11, the upper searing knife mechanism 11 and the lower searing knife mechanism 12 seal the packaging film, the elastic force of the pressure adjusting spring 33 pushes the upper searing knife mechanism 11 to press the packaging film, the distance between the pressure adjusting plate 32 and the upper searing knife mechanism 11 can be adjusted through the pressure adjusting piece 31, so as to adjust the elastic force of the pressure adjusting spring 33, change the pressure of the upper searing knife mechanism 11 when sealing the packaging film, and avoid the damage of the packaging film or the unqualified sealing.

[0055] It should be noted that in the present specification, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that processes, methods, articles or devices including a series of elements not only include those elements, but also include other elements not explicitly listed, or further include elements inherent to such processes, methods, articles or devices. Without more limitations, the elements defined by the statement "comprising" do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0056] Although the content of the present application has been described in detail by the above preferred embodiments, it should be recognized that the above description should not be considered as a limitation of the present application. After reading the above content, various modifications and substitutions of the present application will be obvious to those skilled in the art. Therefore, the protection scope of the present application should be defined by the appended claims.

Claims

1. A hot knife closure device characterized by, The application relates to a hot knife assembly, a driving assembly, a pressure regulating assembly and a control system. The hot knife assembly comprises a frame body, an upper hot knife mechanism and a lower hot knife mechanism. The lower hot knife mechanism is fixed on the frame body, and the upper hot knife mechanism is oppositely arranged above the lower hot knife mechanism. The driving assembly is arranged on the frame body. Under the driving of the driving assembly, the upper hot knife mechanism moves downwards to the lower hot knife mechanism to seal the packaging film between the upper hot knife mechanism and the lower hot knife mechanism. The pressure regulating assembly comprises a pressure regulating part, a pressure regulating plate, a pressure regulating spring and a pressure sensor. The output end of the pressure regulating part is connected with the pressure regulating plate.

2. The ironing blade closure device of claim 1, wherein One end of the pressure regulating spring is connected with the pressure regulating plate, and the other end is connected with the upper hot knife mechanism. The pressure regulating part is used for adjusting the distance between the pressure regulating plate and the upper hot knife mechanism.

3. The ironing blade closure device of claim 2, wherein When the upper hot knife mechanism and the lower hot knife mechanism seal the packaging film, the elastic force of the compressed pressure regulating spring pushes the upper hot knife mechanism to press the packaging film. The pressure sensor is arranged on the pressure regulating plate and is used for detecting the elastic force of the pressure regulating spring on the pressure regulating plate.

4. The ironing blade closure device of claim 2 wherein, The control system can control the pressure regulating part to adjust the pressure on the hot knife mechanism and display the pressure value detected by the pressure sensor. The driving assembly comprises a driving part, a pull rod and a supporting plate.

5. The ironing knife closure device of claim 1 wherein, The driving part is used for driving the pull rod to move up and down. One end of the pull rod is connected with the pressure regulating plate through the lower hot knife mechanism.

6. The ironing knife closure device of claim 5 wherein, The pull rod is slidably connected with the lower hot knife mechanism.

7. The ironing knife closure device of claim 5 wherein, The supporting plate is fixed on the pull rod and is located below the upper hot knife mechanism and is used for supporting the upper hot knife mechanism. Under the driving of the driving part, the pull rod pulls the pressure regulating plate to move the upper hot knife mechanism downwards to seal the packaging film. After the sealing of the packaging film is completed, the pull rod pushes the upper hot knife mechanism to move upwards to reset. The driving assembly further comprises an eccentric wheel, a connecting rod and a hinge part. The output end of the driving part is connected with the eccentric wheel and is used for driving the eccentric wheel to rotate. One end of the connecting rod is connected with the eccentric wheel, and the other end is connected with the hinge part. The hinge part is fixed on one end of the pull rod. The driving assembly further comprises a reset spring and a reset plate. The reset plate is fixed on the pull rod. The reset spring is sleeved on the pull rod. One end of the reset spring is connected with the lower hot knife mechanism, and the other end is connected with the reset plate. The upper hot knife mechanism and the lower hot knife mechanism each comprise a hot knife frame, a heating mechanism and a hot knife mechanism. The heating mechanism is arranged on the hot knife frame and is used for heating the hot knife mechanism. The two hot knife mechanisms are used for sealing the packaging film. Both sides of the hot knife frame are provided with connecting parts which are used for being connected with the driving assembly or the pressure regulating assembly. The hot knife mechanism comprises a knife body and a heat-resistant pad. The knife body is arranged on the hot knife frame. The heat-resistant pad is arranged on the outer side of the knife body and is used for heat transfer during sealing.

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