Tool apron, sealing cut-off tool and sealing cut-off device

Abstract

The utility model discloses a tool apron, a sealing cut-off tool and a sealing cut-off device, and relates to the technical field of packaging sealing devices. According to the tool apron, the sealing cut-off tool and the sealing cut-off device, the interval groove is machined in the tool apron body, the tool apron body is divided into the heating sealing part and the cut-off tool installation part through the interval groove, and the heating pipe installation hole is formed in the heating sealing part; a cut-off tool assembling groove used for assembling a cut-off tool is formed in the end face of the cut-off tool mounting part. Under the action of the interval groove, heat conducted to the cut-off tool mounting part from the heating sealing part is reduced, and the problem that when a PE film is cut off and sealed, the temperature of a cut-off tool is too high, and consequently the end opening is adhered is solved. According to the cutter holder structure, the heat of the sealed edge and the temperature of the unsealed edge are cut, so that heat conduction cannot be completely conducted to the unsealed edge, and the technical problem that fracture adhesion is caused during semi-sealing in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging sealing devices, and more specifically, to a tool holder, a sealing cutting knife and a sealing cutting device. Background Art

[0002] On the one hand, the existing sealing cutting devices for packaging machines all seal the tail end of the previous package of materials, seal the front end of the next package of materials, and then the cutting knife in the sealing cutting device cuts the two packages of materials. The existing sealing cutting device with such a sealing structure cannot meet the special packaging requirements of products. For example, the products output by the sealing cutting device are packaged with one side sealed and the other side unsealed to form an opening, so as to facilitate the subsequent vacuum shrinkage of the packages with one-side sealing output by the transverse sealing device.

[0003] On the other hand, the existing sealing cutting device for bag-making machines can achieve the sealing of the tail of the bag and the cutting between the previous bag and the next bag. After cutting, the upper end of the bag is in an open state. If the sealing cutting device of the existing bag-making machine is applied to the packaging machine, it can meet the packaging requirement of one-side sealing and the other side unsealed to form an opening.

[0004] However, compared with the sealing cutting device for packaging machines that seals and cuts at both ends, the existing sealing cutting device that can achieve sealing at one end and opening at the other end only differs in that, taking the cutting knife as the boundary for the sealing knife, the sealing knife on one side of the cutting knife is provided with a heating tube to heat-seal the packaging film, and the sealing knife on the other side of the cutting knife is not heated, so as to form a packaging bag specification with one end sealed and the other end open, as shown in the appendix. Figure 1 However, for such a sealing knife structure, when sealing and cutting a relatively thick film material such as a PE film, the heat-sealing part needs to be heated to about 110°C - 120°C. However, its structure results in a relatively close distance between the cutting knife and the heat-sealing part, and part of the heat will be conducted to the cutting knife, causing the cutting knife to be heated. When cutting the PE film, the cutting knife will adhere to the cut of the PE film, thus affecting the sealing and cutting effect. Summary of the Utility Model

[0005] In order to overcome the defects and deficiencies existing in the above-mentioned prior art, the present utility model provides a tool holder, a sealing and cutting knife, and a sealing device. The invention object of the present utility model is to solve the problem that the cutting knife in the existing sealing and cutting knife is easily heated by conduction, and the cut port will be adhered when cutting the PE film. The present utility model provides a tool holder, which includes a tool holder body. A heating and sealing part and a cutting knife mounting part are arranged on the tool holder body. An interval groove is arranged between the heating and sealing part and the cutting knife mounting part. Under the action of this interval groove, the heat conducted from the heating and sealing part to the cutting knife mounting part is reduced, and the problem that the cutting knife temperature is too high and the port is adhered when cutting and sealing the PE film is avoided. The tool holder structure of the present utility model separates the heat of the sealing edge from the temperature of the non-sealing edge, so that the heat conduction cannot be completely conducted to the non-sealing edge, in order to solve the technical problem of adhesion at the cut port during existing semi-sealing.

[0006] In order to solve the problems existing in the above-mentioned prior art, the present utility model is realized through the following technical solutions.

[0007] The first aspect of the present utility model provides a tool holder, which includes a tool holder body. An interval groove is machined on the tool holder body, and this interval groove divides the tool holder body into a heating and sealing part and a cutting knife mounting part. A heating tube mounting hole is opened in the heating and sealing part; a cutting knife assembly groove for assembling the cutting knife is opened on the end surface of the cutting knife mounting part.

[0008] Further preferably, the width of the interval groove is 2 mm.

[0009] Further preferably, a sealing texture is arranged on the end surface of the heating and sealing part.

[0010] Further preferably, the end surface and the outer side surface of the heating and sealing part are transitioned through an inclined surface.

[0011] The second aspect of the present utility model provides a sealing and cutting knife. The sealing knife includes an upper tool holder and a lower tool holder. The upper tool holder and the lower tool holder are arranged oppositely, and both the upper tool holder and the lower tool holder include a tool holder body. An interval groove is machined on the tool holder body, and this interval groove divides the tool holder body into a heating and sealing part and a cutting knife mounting part. A heating tube mounting hole is opened in the heating and sealing part, and a sealing texture is arranged on the end surface of the heating and sealing part; a cutting knife assembly groove for assembling the cutting knife is opened on the end surface of the cutting knife mounting part; heating tubes are arranged in the heating tube mounting holes of the upper tool holder and the lower tool holder; a surface knife is assembled in the cutting knife assembly groove of the upper tool holder, and a bottom knife is assembled in the cutting knife assembly groove of the lower tool holder.

[0012] Further preferably, the width of the interval groove is 2 mm.

[0013] Further preferably, a sealing texture is arranged on the end surface of the heating and sealing part.

[0014] Further preferably, the end face and the outer side face of the heat-sealing portion are transitioned through an inclined surface.

[0015] The third aspect of the present utility model provides a sealing and cutting device, including an upper rotating shaft, a lower rotating shaft, a rotation driving assembly, and the sealing and cutting knife described in the second aspect above. Among them, the upper knife holder in the sealing and cutting knife is assembled on the upper rotating shaft, the upper knife holder of the sealing and cutting knife is assembled on the upper rotating shaft, and the lower knife holder of the sealing and cutting knife is assembled on the lower rotating shaft. The rotation driving assembly drives the upper rotating shaft and the lower rotating shaft to rotate relatively, so that the upper knife holder and the lower knife holder are engaged to seal and cut the packaging film passing between the upper rotating shaft and the lower rotating shaft.

[0016] Further preferably, two upper knife holders are assembled on the upper rotating shaft, and two lower knife holders are assembled on the lower rotating shaft. The two upper knife holders are evenly distributed at equal intervals along the circumference of the upper rotating shaft, and the two lower knife holders are evenly distributed at equal intervals along the circumference of the lower rotating shaft.

[0017] The fourth aspect of the present utility model provides a sealing and cutting device, including an upper mounting seat, a lower mounting seat, a reciprocating driving assembly, and the sealing and cutting knife described in the second aspect above. Among them, the upper knife holder of the sealing and cutting knife is mounted on the upper mounting seat, the lower knife holder of the sealing and cutting knife is mounted on the lower mounting seat, and the upper knife holder and the lower knife holder are arranged opposite to each other; the reciprocating driving assembly drives the upper mounting seat and the lower mounting seat to move relatively back and forth, prompting the upper knife holder and the lower knife holder to be engaged or separated, so as to seal and cut the packaging film passing between the upper knife holder and the lower knife holder.

[0018] Compared with the prior art, the beneficial technical effects brought by the present utility model are as follows:

[0019] 1. In the present utility model, a spaced groove is machined on the knife holder body. This spaced groove divides the knife holder body into a heat-sealing portion and a cutting knife mounting portion. Under the action of this spaced groove, the heat conducted from the heat-sealing portion to the cutting knife mounting portion is reduced, avoiding the problem that the temperature of the cutting knife is too high at the port when cutting and sealing the PE film, resulting in adhesion. The knife holder structure of the present utility model separates the heat of the sealing edge from the temperature of the non-sealing edge, so that its heat conduction cannot be completely conducted to the non-sealing edge, in order to solve the technical problem of adhesion at the cut port during existing semi-sealing.

[0020] 2. The present utility model sets the width of the spacing groove to 2 mm. While reducing the heat conduction efficiency, it ensures that the cutting edge of the cutting knife has a certain temperature so that when cutting the packaging film, the film cut will not be heat-sealed and adhered together. Especially when applied to the single-end sealing packaging of PE films, since the sealing temperature range of PE films is relatively small, between 110°C and 120°C, melting or insecure sealing will occur if the deviation exceeds 5°C. The spacing groove cut on the knife seat body can reduce the temperature of the cutting knife by about 10°C, that is, the temperature of the cutting knife is about 100°C, which is about 10°C lower than that at the sealing texture, thus avoiding film adhesion and knife sticking.

[0021] 3. The sealing and cutting knife of the present utility model can be used in a rotary sealing and cutting device or a reciprocating sealing and cutting device. When applied to a rotary sealing and cutting device and using a PE film with the temperature controlled at 110°C, a packaging efficiency of 150 packs per minute can be achieved. Description of the Drawings

[0022] Figure 1 It is a schematic diagram of the sealing and cutting structure of an existing single-sided sealing and cutting device;

[0023] Figure 2 It is a top view structure schematic diagram of the knife seat of the present utility model;

[0024] Figure 3 It is a side view structure schematic diagram of the knife seat of the present utility model;

[0025] Figure 4 It is a front view structure schematic diagram of the knife seat of the present utility model;

[0026] Figure 5 It is a structure schematic diagram of the sealing and cutting knife of the present utility model;

[0027] Figure 6 It is a structure schematic diagram of the rotary sealing and cutting device of the present utility model;

[0028] Figure 7 It is a structure schematic diagram of the reciprocating sealing and cutting device of the present utility model;

[0029] Reference Numerals: 1. Knife seat body, 2. Spacing groove, 3. Heating and sealing part, 4. Cutting knife installation part, 5. Heating pipe installation hole, 6. Cutting knife assembly groove, 7. Sealing texture, 8. End face, 9. Outer side face, 10. Inclined plane, 11. Upper knife seat, 12. Lower knife seat, 13. Surface knife, 14. Bottom knife, 15. Upper rotating shaft, 16. Lower rotating shaft, 17. Upper mounting seat, 18. Lower mounting seat. Detailed Embodiments

[0030] The following are exemplary embodiments in conjunction with the accompanying drawings to help comprehensively understand the present utility model defined by the claims and their equivalents, where the specific details are only regarded as exemplary and do not limit the scope of the present utility model. Therefore, those of ordinary skill in the art can make various changes and modifications to the embodiments without departing from the scope and spirit of the present utility model.

[0031] Embodiment 1

[0032] As a preferred embodiment of the present utility model, referring to the attached drawings of the specification Figure 2 and the attached Figure 3 and the attached Figure 4 As shown, this embodiment discloses a tool holder, which includes a tool holder body 1. A spacing groove 2 is machined on the tool holder body 1. The spacing groove 2 divides the tool holder body 1 into a heat-sealing part 3 and a cutting tool mounting part 4. A heating tube mounting hole 5 is provided in the heat-sealing part 3; a cutting tool assembly groove 6 for assembling a cutting tool is provided on the end face 8 of the cutting tool mounting part 4. After the heating tube is assembled in the tool holder of this embodiment, when the heating tube is energized to heat the heat-sealing part 3, due to the setting of the spacing groove 2, the heat conduction efficiency between the heat-sealing part 3 and the cutting tool mounting part 4 is reduced, and the temperature of the cutting tool on the cutting tool mounting part 4 is reduced to solve the technical problem of adhesion at the fracture during existing semi-sealing.

[0033] As an implementation manner of this embodiment, the width of the spacing groove 2 is 2 mm. While reducing the heat conduction efficiency, it ensures that the cutting edge of the cutting tool has a certain temperature so that when cutting the packaging film, the film cut will not be heat-sealed and adhered together. Especially when applied to the single-end sealing packaging of PE film, since the sealing temperature range of PE film is small, between 110°C and 120°C, and it will melt or not be sealed firmly if the deviation exceeds 5°C; the spacing groove 2 cut on the tool holder body 1 can reduce the temperature of the cutting tool by about 10°C, that is, the temperature of the cutting tool is about 100°C, which is about 10°C lower than that at the sealing pattern 7, avoiding film adhesion and knife sticking.

[0034] As another implementation manner of this embodiment, a sealing pattern 7 is provided on the end face 8 of the heat-sealing part 3. The setting of the sealing pattern 7 makes the sealing of the packaging film firmer and more beautiful, improving the sealing tightness.

[0035] As another implementation manner of this embodiment, the end face 8 and the outer side face 9 of the heat-sealing part 3 are transitioned through an inclined surface 10. Through the machined inclined surface 10, the end face 8 of the heat-sealing part 3 is made smaller than the cross-section at the lower end of the heat-sealing part 3, reducing the contact area between the heat-sealing part 3 and the packaging film. Under the same pressure, the smaller the area, the greater the pressure applied to the packaging film, which is beneficial to improving the sealing effect.

[0036] Embodiment 2

[0037] As another preferred embodiment of the present utility model, referring to the appended drawings of the specification Figure 5 As shown, this embodiment discloses a sealing and cutting knife. The sealing knife includes an upper knife seat 11 and a lower knife seat 12. The upper knife seat 11 and the lower knife seat 12 are arranged opposite to each other, and both the upper knife seat 11 and the lower knife seat 12 include a knife seat body 1. A spacing groove 2 is machined on the knife seat body 1. The spacing groove 2 divides the knife seat body 1 into a heat-sealing part 3 and a cutting knife mounting part 4. A heating tube mounting hole 5 is provided in the heat-sealing part 3, and a sealing texture 7 is provided on the end face 8 of the heat-sealing part 3; a cutting knife assembly groove 6 for assembling a cutting knife is provided on the end face 8 of the cutting knife mounting part 4; heating tubes are provided in the heating tube mounting holes 5 of both the upper knife seat 11 and the lower knife seat 12; a surface knife 13 is assembled in the cutting knife assembly groove 6 of the upper knife seat 11, and a bottom knife 14 is assembled in the cutting knife assembly groove 6 of the lower knife seat 12.

[0038] In this embodiment, after the upper knife seat 11 and the lower knife seat 12 are engaged, the sealing and cutting of the packaging film passing between the upper knife seat 11 and the lower knife seat 12 are realized, thereby forming a single-sided sealed packaging structure.

[0039] As an implementation manner of this embodiment, the width of the spacing groove 2 is 2 mm. A sealing texture 7 is provided on the end face 8 of the heat-sealing part 3. The end face 8 of the heat-sealing part 3 and the outer side face 9 are transitioned through an inclined surface 10.

[0040] Embodiment 3

[0041] As another preferred embodiment of the present utility model, referring to the appended drawings of the specification Figure 6 As shown, this embodiment discloses a sealing and cutting device, which includes an upper rotating shaft 15, a lower rotating shaft 16, a rotation driving assembly and the sealing and cutting knife described in Embodiment 2 above. Among them, the upper knife seat 11 of the sealing and cutting knife is assembled on the upper rotating shaft 15, the upper knife seat 11 of the sealing and cutting knife is assembled on the upper rotating shaft 15, and the lower knife seat 12 of the sealing and cutting knife is assembled on the lower rotating shaft 16. The rotation driving assembly drives the upper rotating shaft and the lower rotating shaft 16 to rotate relatively, so that the upper knife seat 11 and the lower knife seat 12 are engaged to perform sealing and cutting on the packaging film passing between the upper rotating shaft 15 and the lower rotating shaft 16.

[0042] In this embodiment, a rotary sealing and cutting device is adopted, which can improve the cutting and sealing efficiency. Using a PE film and controlling the temperature at 110 °C can meet the packaging efficiency of 150 packages per minute.

[0043] As an example of this embodiment, two upper tool holders 11 are assembled on the upper rotating shaft 15, and two lower tool holders 12 are assembled on the lower rotating shaft 16. The two upper tool holders 11 are evenly distributed at equal intervals along the circumference of the upper rotating shaft 15, and the two lower tool holders 12 are evenly distributed at equal intervals along the circumference of the lower rotating shaft 16.

[0044] In this embodiment, the rotary drive assembly is a conventional structural component and has the same structure as that of the existing rotary transverse sealing device.

[0045] Embodiment 4

[0046] As another preferred embodiment of the present invention, referring to the accompanying drawings of the specification Figure 7 As shown, this embodiment discloses a sealing and cutting device, including an upper mounting seat 17, a lower mounting seat 18, a reciprocating drive assembly, and the sealing and cutting knife described in the second aspect above. The upper tool holder 11 of the sealing and cutting knife is mounted on the upper mounting seat 17, and the lower tool holder 12 of the sealing and cutting knife is mounted on the lower mounting seat 18. The upper tool holder 11 and the lower tool holder 12 are arranged opposite to each other; the reciprocating drive assembly drives the upper mounting seat 17 and the lower mounting seat 18 to move relatively back and forth, causing the upper tool holder 11 and the lower tool holder 12 to engage or separate, and sealing and cutting the packaging film passing between the upper tool holder 11 and the lower tool holder 12.

[0047] In this embodiment, the reciprocating drive assembly is a conventional structure and has the same structure as the drive assembly of the existing reciprocating transverse sealing device.

[0048] Although the inventive concept of the present invention has been specifically shown and described with reference to the exemplary embodiments of the present invention, those skilled in the art should understand that various changes in form and details can be made without departing from the spirit and scope of the present invention defined by the claims.

Claims

1. A tool holder, which comprises a tool holder body (1), and is characterized in that: A spacing groove (2) is machined on the tool holder body (1), and the spacing groove (2) divides the tool holder body (1) into a heat-sealing part (3) and a cutting tool mounting part (4). A heating tube mounting hole (5) is provided in the heat-sealing part (3); a cutting tool assembly groove (6) for assembling a cutting tool is provided on the end face (8) of the cutting tool mounting part (4).

2. The tool holder according to claim 1, characterized in that: The width of the spacing groove (2) is 2 mm.

3. A tool holder according to claim 1 or 2, characterized in that: A sealing texture (7) is provided on the end face (8) of the heat-sealing part (3).

4. A tool holder according to claim 3, characterized in that: The end face (8) of the heat-sealing part (3) and the outer side face (9) are transitioned through an inclined surface (10).

5. A sealing and cutting knife, the sealing knife comprising an upper knife seat (11) and a lower knife seat (12), the upper knife seat (11) and the lower knife seat (12) being oppositely arranged, characterized in that: Both the upper tool holder (11) and the lower tool holder (12) include a tool holder body (1). A spacing groove (2) is machined on the tool holder body (1), and the spacing groove (2) divides the tool holder body (1) into a heat-sealing part (3) and a cutting tool mounting part (4). A heating tube mounting hole (5) is provided in the heat-sealing part (3), and a sealing texture (7) is provided on the end face (8) of the heat-sealing part (3); a cutting tool assembly groove (6) for assembling a cutting tool is provided on the end face (8) of the cutting tool mounting part (4); heating tubes are provided in the heating tube mounting holes (5) of both the upper tool holder (11) and the lower tool holder (12); a surface knife (13) is assembled in the cutting tool assembly groove (6) of the upper tool holder (11), and a bottom knife (14) is assembled in the cutting tool assembly groove (6) of the lower tool holder (12).

6. The sealing and cutting knife according to claim 5, characterized in that: The width of the spacing groove (2) is 2 mm.

7. A sealing and cutting knife according to claim 5 or 6, characterized in that: A sealing texture (7) is provided on the end face (8) of the heat-sealing part (3).

8. The sealing and cutting knife according to claim 7, characterized in that: The end face (8) of the heat-sealing part (3) and the outer side face (9) are transitioned through an inclined surface (10).

9. A sealing and cutting device, characterized in that: It includes an upper rotating shaft (15), a lower rotating shaft (16), a rotation driving assembly, and a sealing and cutting tool as described in any one of claims 5-8. Among them, the upper tool holder (11) of the sealing and cutting tool is assembled on the upper rotating shaft (15), the upper tool holder (11) of the sealing and cutting tool is assembled on the upper rotating shaft (15), the lower tool holder (12) of the sealing and cutting tool is assembled on the lower rotating shaft (16), and the rotation driving assembly drives the upper rotating shaft and the lower rotating shaft (16) to rotate relatively, so that the upper tool holder (11) meshes with the lower tool holder (12) to seal and cut the packaging film passing through between the upper rotating shaft (15) and the lower rotating shaft (16).

10. A sealing and cutting device, characterized in that: It includes an upper mounting seat (17), a lower mounting seat (18), a reciprocating driving assembly, and a sealing and cutting tool as described in any one of claims 5-8. Among them, the upper tool holder (11) of the sealing and cutting tool is mounted on the upper mounting seat (17), the lower tool holder (12) of the sealing and cutting tool is mounted on the lower mounting seat (18), and the upper tool holder (11) and the lower tool holder (12) are arranged opposite to each other; the reciprocating driving assembly drives the upper mounting seat (17) and the lower mounting seat (18) to move reciprocally relative to each other, prompting the upper tool holder (11) and the lower tool holder (12) to mesh or separate, and sealing and cutting the packaging film passing through between the upper tool holder (11) and the lower tool holder (12).

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