Sealing film cutting device

Abstract

According to the sealing film cutting device, the sealing film winding drum is fixed to the sealing film fixing assembly, the sealing film wound on the sealing film winding drum can be released, the sealing film released from the sealing film fixing assembly passes through the paper film separating assembly, and the paper film separating assembly is blocked between the separated sealing film and backing paper. The end of the backing paper is fixed to the backing paper fixing assembly and can be rolled, the sealing film passing through the paper film separating assembly is cut off through the cutting assembly, the sealing film fixing assembly, the paper film separating assembly, the backing paper fixing assembly and the cutting assembly are arranged in the shell, and the cut sealing film extends out of the shell. A series of work such as sealing film storage, paper-film separation, cutting and backing paper recovery can be simplified, the cutting efficiency is high, operation is easy and convenient, installation is convenient, portability is high, and the device is suitable for various indoor and outdoor working environments; recycling of the backing paper is achieved, and environment pollution during field work is avoided.

Description

Technical Field

[0001] The utility model relates to the field of field sampling, in particular to a sealing film cutting device. Background Art

[0002] Sealing film is widely used in various scientific research work and is often used to seal and preserve samples. When sampling in the field, environmental conditions are limited, and the traditional method of using sealing film has certain limitations. First of all, water samples, soil samples, plant samples, and microbial samples must be sealed and preserved with sealing film in time, but the conventional method requires cutting with scissors before using the sealing film, and then peeling off the backing paper by hand. The whole process is time-consuming and labor-intensive, affecting the timeliness of sample preservation. Secondly, under field conditions, improper storage of sealing film will contaminate the sealing film and affect the sealing effect. In addition, the discarded backing paper is difficult to recycle, especially when the sealing film is used outdoors, it is easy to be left in the wild and pollute the environment. Utility Model Content

[0003] Purpose of the utility model: to provide a sealing film cutting device which can conveniently and quickly take out the sealing film and automatically recycle the backing paper.

[0004] Technical solution: The sealing film cutting device described in the utility model comprises:

[0005] Sealing film roll;

[0006] A sealing film fixing component, the sealing film roll is fixed on the sealing film fixing component, and the sealing film wound on the sealing film roll can be released;

[0007] A paper-film separation component, through which the sealing film released from the sealing film fixing component passes, and the paper-film separation component is blocked between the separated sealing film and the backing paper;

[0008] A backing paper fixing assembly, on which the end of the backing paper is fixed and can be rolled up;

[0009] A cutting component, through which the sealing film of the paper-film separation component is cut;

[0010] The sealing film fixing assembly, the paper film separation assembly, the backing paper fixing assembly and the cutting assembly are placed in the housing, and the cut sealing film extends out of the housing.

[0011] Furthermore, the sealing film fixing assembly comprises a first rotating shaft that rotates axially, and the sealing film roll is sleeved on the first rotating shaft and rotates synchronously with the first rotating shaft.

[0012] Furthermore, the first rotating shaft has toughness in the radial direction, and a circumferential limiting portion is provided on the top of the first rotating shaft.

[0013] Furthermore, a paper-film separation tooth is provided at the end of the paper-film separation assembly, and the angle of the end of the paper-film separation tooth is 45°.

[0014] Furthermore, the backing paper fixing assembly includes a second rotating shaft and a rotating disk, the rotating disk and the second rotating shaft rotate synchronously, a surface of the second rotating shaft is provided with a slot for fixing the end of the backing paper, and the backing paper is rolled up on the rotating disk.

[0015] Furthermore, both the first rotating shaft and the second rotating shaft are provided with a one-way rotation structure.

[0016] Furthermore, the cutting assembly includes a driving part, a transmission part, an elastic part and a cutting part; the driving part is rotatable around one end and is arranged on the shell, the transmission part connects the driving part and the elastic part, and converts the rotation of the driving part into deformation of the elastic part, and the deformation of the elastic part causes the cutting part to extend or retract.

[0017] Furthermore, the transmission part includes a first slider and a second slider, the first slider is connected to the driving part and installed in a limiting groove of the housing, the second slider is installed in a mounting groove in the housing, and the first slider and the second slider have conflicting contact surfaces;

[0018] When the driving part rotates, the first slider slides in the limiting groove along the first direction and presses the second slider, so that the second slider slides in the installation groove along the second direction.

[0019] Furthermore, the elastic part is arranged in the installation groove, and one end of the elastic member is fixed to the installation groove, and the other end is connected to the second sliding block.

[0020] Furthermore, the cutting portion includes a cutter head, the cutter head and a connecting portion, and the connecting portion passes through the mounting groove to the housing to connect the second slider and the cutter head.

[0021] Beneficial effects: 1. The utility model can simplify a series of work such as storage of sealing film, separation of paper and film, cutting and recycling of backing paper, with high cutting efficiency, simple operation, convenient installation and high portability, and is suitable for various working environments indoors and outdoors;

[0022] 2. The backing paper can be recycled to avoid environmental pollution when working in the field. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is an expanded view of the internal structure of the shell of the utility model, wherein the upper part is the internal part of the shell body, and the lower part is the shell outer shell;

[0024] Figure 2 It is a side view of the sealing film fixing assembly of the utility model;

[0025] Figure 3It is a top view of the sealing film fixing assembly of the utility model;

[0026] Figure 4 This is a schematic diagram of the structure of the paper membrane separation component of the utility model;

[0027] Figure 5 It is a side view of the backing paper fixing assembly of the utility model;

[0028] Figure 6 This is a schematic diagram of the structure of the limit rotating shaft of the utility model;

[0029] Figure 7 It is a partial enlarged view of the cutting component of the utility model;

[0030] Figure 8 It is a top view of the housing of the utility model;

[0031] Fig. 9 It is a front view of the exterior of the shell of the utility model. DETAILED DESCRIPTION

[0032] The technical solution of the utility model is described in detail below with reference to the accompanying drawings, but the protection scope of the utility model is not limited to the embodiments.

[0033] In order to make the purpose and implementation of the present application clearer, the exemplary implementation of the present application will be clearly and completely described below in conjunction with the drawings in the exemplary embodiments of the present application. Obviously, the described exemplary embodiments are only part of the embodiments of the present application, rather than all of the embodiments. It should be noted that the brief description of the terms in this application is only for the convenience of understanding the implementation described below, and is not intended to limit the implementation of the present application. Unless otherwise specified, these terms should be understood according to their common and usual meanings.

[0034] A sealing film cutting device is mainly used for cutting laboratory sealing films, and is applicable to sealing films in rolls such as Parafilm, Brand, Waxfilm and Elfofilm sealing films. Figure 1 As shown, it includes a sealing film roll 1, a sealing film fixing component 2, a paper film separation component 3, a backing paper fixing component 4, a cutting component 5 and a shell 6, wherein the sealing film roll 1, the sealing film fixing component 2, the paper film separation component 3, the backing paper fixing component 4 and the cutting component 5 are all placed in the shell 6.

[0035] The structure of the housing 6 can be a main body and an outer cover, such as Figure 1As shown, the sealing film roll 1, the sealing film fixing assembly 2, the paper film separation assembly 3, the backing paper fixing assembly 4, and the cutting assembly 5 are all arranged inside the main body of the housing 6 in the upper part of the figure. The main body and the outer cover can be connected by hinges, and the outer cover rotates around the hinge so that the structures inside the outer cover and the main body overlap, and finally fixed by fasteners. A round plastic PC transparent cover 8 is installed on the outer cover to facilitate observation of the remaining sealing film.

[0036] When not in use, the sealing film generally includes a film body and a backing paper that are attached to each other. The film body is non-sticky and the backing paper is not easily damaged. When not in use, the sealing film is wrapped around the paper tube to form a sealing film roll 1. Based on this, the sealing film roll 1 can be set on the sealing film fixing component 2 and released. The sealing film released from the sealing film fixing component 2 passes through the paper film separation component 3, and the paper film separation component 3 is blocked between the separated film body and the backing paper; the separated film body extends to the cutting component 5, and the separated backing paper extends to the backing paper fixing component 4 for recycling. On the one hand, the starting end of the backing paper is fixed to the backing paper fixing component 4 and can be rolled up; on the other hand, the film body is cut off by the cutting component 5 and extends out of the shell 6.

[0037] Specifically, if Figure 2 As shown, the sealing film fixing assembly 2 comprises a first rotating shaft 201 which is axially free to rotate, and the sealing film is sleeved on the first rotating shaft 201 and can rotate synchronously with the first rotating shaft 201 .

[0038] As one implementation, the first rotating shaft 201 is a rotating shaft that rotates in one direction. Figure 2 , 3 As shown, the bottom of the first rotating shaft 201 is rotatably arranged in the bearing seat 203 of the housing 6 through the bearing 202. For example, in this embodiment, the bearing 202 is configured as a ball bearing 202. Here, in order to achieve unidirectional rotation, the outer peripheral surface of the bearing 202 can also be provided with a plurality of spinous protrusions 204 to prevent the first rotating shaft 201 from rotating in the opposite direction. Correspondingly, the circumference of the bearing seat 203 is provided with a latching tooth 205 that matches the inclination angle of the latching tooth 205. The latching tooth 205 is elastically arranged on the bearing seat 203 so that it can be reciprocatedly extended or retracted in the bearing seat 203. As shown in the figure, the elastic fixing method of the spinous protrusion 204 is a spring 206. When the first rotating shaft 201 rotates clockwise, the spinous protrusion 204 can squeeze the latching tooth 205 through the contact surface with the same inclination angle, and press the latching tooth 205 back, and the first rotating shaft 201 rotates normally. When the first rotating shaft 201 rotates counterclockwise, the spinous process 204 collides with the latching teeth 205 to block the rotation of the first rotating shaft 201, thereby achieving unidirectional rotation.

[0039] In order to facilitate the installation of the sealing film roll 1, the radial direction of the first rotating shaft 201 is tough. In a natural state, the outer diameter of the first rotating shaft 201 is slightly larger than the inner diameter of the roll. After the roll is manually mounted on the first rotating shaft 201, the first rotating shaft 201 is compressed centripetally. Due to the toughness of the first rotating shaft 201, it has a tendency to expand centrifugally to support the roll, so that the roll and the first rotating shaft 201 will not slide relative to each other.

[0040] The structures for making the radial direction of the first rotating shaft 201 tough vary. Here, a feasible method is provided. For example, the first rotating shaft 201 can be constructed as a hollow plastic tube, and the circumference of the first rotating shaft 201 can be constructed as a circle composed of multiple arcs, such as Figure 1 As shown, it can be seen from the cross section of the first rotating shaft 201 that the circumferential surface of the first rotating shaft 201 is composed of four arc surfaces 207, and there are gaps between adjacent arc surfaces 207. It can be imagined that in this case, the diameter of the circumference of the first rotating shaft 201 is slightly reduced under the condition of extrusion; and when the external force disappears, the diameter is restored.

[0041] Furthermore, in order to prevent the sealing film roll 1 from falling off the first rotating shaft 201, a circumferential limiting portion 208 is provided on the top of the first rotating shaft 201. As shown in the figure, the limiting portion 208 is constructed as a circumferentially extending convex edge, and the outer diameter of the convex edge is greater than the outer diameter of the first rotating shaft 201.

[0042] like Figure 4 As shown, the paper-film separation component 3 is provided with a paper-film separation tooth, the end angle A of the paper-film separation tooth is 45°, and the paper-film separation tooth is fixed in the housing 6, and its end faces the sealing film released from the sealing film fixing component 2. When in use, the film body at the starting end of the sealing film is separated from the backing paper, and the separation tooth is sandwiched between the two. As the paper film is continuously released, the end of the separation tooth can separate the sealing film into an independent film body and backing paper through a relatively sharp end.

[0043] like Figure 5 As shown, the backing paper fixing assembly 4 includes a second rotating shaft 401 and a rotating disk. The second rotating shaft 401 and the rotating disk are in a coaxial fixed relationship. The diameter of the second rotating shaft 401 is smaller than the diameter of the rotating disk. The second rotating shaft 401 and the rotating disk can be fixed by radial connection, and the rotating disk and the second rotating shaft 401 rotate synchronously. Similar to the first rotating shaft 201, the rotation form of the second rotating shaft 401 is also unidirectional rotation. Its rotation connection structure is roughly the same as that of the first rotating shaft 201, so it is not repeated here. However, it should be noted that in order to ensure the reeling of the backing paper, the direction of the teeth and spinous process of the second rotating shaft 401 is opposite to the direction of the teeth 205 and spinous process 204 of the first rotating shaft 201. For example, in this embodiment, the second rotating shaft 401 rotates counterclockwise in one direction, while the first rotating shaft 201 rotates clockwise in one direction.

[0044] The turntable is generally arranged outside the housing 6. The rotation of the turntable can drive the second rotating shaft 401 to rotate synchronously, and the sealing film drives the first rotating shaft 201 to rotate, so that the entire cutting device starts to operate. The surface of the second rotating shaft 401 is provided with a clamping groove for fixing the end of the backing paper. When the starting end of the backing paper is clamped in the clamping groove, during the rotation of the second rotating shaft 401 and the turntable, the backing paper can be rolled up on the second rotating shaft 401 for storage.

[0045] When the backing paper fixing assembly 4 cannot rotate in the original direction and the backing paper is folded or tangled and cannot be rolled up smoothly, the problem can be solved by manually rotating the turntable. Figure 5 , 9 As shown, specifically, the turntable includes an inner turntable 402 and an outer turntable 403 that can be interlocked with each other, the inner turntable 402 is coaxially fixed to the shaft end of the second rotating shaft 401, the outer turntable 403 is coaxially fixed to the inner turntable 402 through an interlocking structure, and the outer turntable 403 is located outside the housing 6. When the outer turntable 403 is manually driven to rotate, the second rotating shaft 401 can be driven to rotate through the inner turntable 402 to adjust the retraction of the backing paper on the second rotating shaft 401. Further, a handle 404 can be provided on the outer end surface of the outer turntable 403 to facilitate manual drive and rotation.

[0046] In order to ensure that the sealing film can smoothly extend from the sealing film fixing component 2 and be transported to the paper film separation component 3 and the backing paper fixing component 4, a plurality of sets of limiting rotating shafts 7 for guiding the sealing film can be provided on the connection path between the components. The sealing film can fit the limiting rotating shafts 7 arranged in sequence and rotate during operation, ensuring that the sealing film smoothly reaches the paper film separation component 3 or the backing paper fixing component 4 along the predetermined route. On the movement path of the sealing film, the limiting rotating shafts 7 can be provided individually or in pairs. For example, in this embodiment, Figure 1 In the embodiment, there are 3 pairs of limit rotating shafts 7, 6 in total, 2 pairs of which are arranged between the sealing film fixing component 2 and the paper film separation component 3, and 1 pair of which is arranged between the paper film separation component 3 and the backing paper fixing component 4.

[0047] Specifically, if Figure 6 As shown, the limiting rotating shaft 7 includes a fixed shaft 701 and a rotating shaft 702 which are coaxially sleeved inside and outside, wherein the shaft end of the fixed shaft 701 is fixed inside the housing 6, and the rotating shaft 702 is freely rotatable and sleeved on the outer peripheral surface of the fixed shaft 701. The rotating shaft 702 of all the limiting rotating shafts 7 can contact with the sealing film and rotate with the retraction and extension of the sealing film. The limiting rotating shaft 7 plays a guiding role and can also prevent the sealing film from being separated from the paper film in advance before reaching the paper film separation component 3.

[0048] like Figure 7 , 8As shown, the cutting assembly 5 includes a driving part 501, a transmission part, an elastic part 504 and a cutting part. The driving part 501 is rotatable around one end and is arranged on the shell 6. The transmission part connects the driving part 501 and the elastic part 504 to convert the rotation of the driving part 501 into the deformation of the elastic part 504. The deformation of the elastic part 504 causes the cutting part to extend or retract.

[0049] Specifically, the driving part 501 can be a movable handle hinged to the top of the housing 6, which can be pressed by the operator. Furthermore, the driving structure of the driving part 501 can also be a combination of a movable handle and a fixed handle, and the fixed handle is a structure with the top of the housing 6 that allows four fingers of the hand to pass through. In this case, the movable handle can be pressed by the thumb.

[0050] The transmission part includes a first slider 502 and a second slider 503. The upper side of the first slider 502 is connected to the bottom surface of the driving part 501, and the lower side is deeply inserted into the limiting groove of the shell 6. Therefore, driven by the driving part 501, the first slider 502 can slide up and down in the limiting groove.

[0051] The second slider 503 is installed in the installation groove in the housing 6, and the first slider 502 and the second slider 503 have mutually conflicting contact surfaces. For example, in this embodiment, the first slider 502 and the second slider 503 have mutually compatible inclined surfaces.

[0052] When the driving part 501 rotates, the first slider 502 slides in the limiting groove along the first direction (up and down direction in the figure) and presses the second slider 503, so that the second slider 503 slides in the installation groove along the second direction (left and right direction in the figure).

[0053] The elastic part 504 is disposed in the mounting groove, and the left end of the elastic part 504 is fixed to the mounting groove, and the right end is connected to the second slider 503 , so that the horizontal sliding of the second slider 503 can cause the compression degree of the elastic part 504 to change.

[0054] The cutting portion includes a cutter head 505 and a connecting portion 506 . The connecting portion 506 passes through the mounting groove to the housing 6 and connects the second slider 503 and the cutter head 505 .

[0055] Before using this embodiment, the backing paper is folded and inserted into the slot of the second rotating shaft 401, and the shell 6 is closed. As the outer turntable 403 rotates, the second rotating shaft 401 and the first rotating shaft 201 will be driven to rotate, so that the entire cutting device starts to operate, the sealing film of the sealing film roll 1 moves, the paper and the film are separated, the film body reaches the cutting position, and the backing paper is recovered and stored.

[0056] The hand presses the movable handle, exerts force to drive the movable handle to rotate, so that the first slider 502 sinks, thereby squeezing the second slider 503 and pushing the cutter head 505 out. When the movable handle is released, the cutter head 505, the second slider 503 and the first slider 502 are all restored to their original positions under the action of the elastic part 504. In addition, the first slider 502 uses the principle of leverage, so it can help save effort when cutting.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A sealing film cutting device, characterized in that: include: Sealing film roll; A sealing film fixing component, the sealing film roll is fixed on the sealing film fixing component, and the sealing film wound on the sealing film roll can be released; A paper-film separation component, through which the sealing film released from the sealing film fixing component passes, and the paper-film separation component is blocked between the separated sealing film and the backing paper; A backing paper fixing assembly, on which the end of the backing paper is fixed and can be rolled up; A cutting component, through which the sealing film of the paper-film separation component is cut; The sealing film fixing assembly, the paper film separation assembly, the backing paper fixing assembly and the cutting assembly are placed in the housing, and the cut sealing film extends out of the housing.

2. The sealing film cutting device according to claim 1, characterized in that: The sealing film fixing assembly comprises a first rotating shaft which rotates axially, and the sealing film roll is sleeved on the first rotating shaft and rotates synchronously with the first rotating shaft.

3. The sealing film cutting device according to claim 2, characterized in that The first rotating shaft has radial toughness, and a circumferential limiting portion is provided on the top of the first rotating shaft.

4. The sealing film cutting device according to claim 1, characterized in that: A paper-film separation tooth is provided at the end of the paper-film separation component, and the angle of the end of the paper-film separation tooth is 45°.

5. The sealing film cutting device according to claim 2, characterized in that: The backing paper fixing assembly comprises a second rotating shaft and a rotating disk. The rotating disk and the second rotating shaft rotate synchronously. A slot for fixing the end of the backing paper is provided on the surface of the second rotating shaft. The backing paper is rolled up on the rotating disk.

6. The sealing film cutting device according to claim 5, characterized in that: The first rotating shaft and the second rotating shaft are both provided with a one-way rotation structure.

7. The sealing film cutting device according to claim 1, characterized in that: The cutting assembly includes a driving part, a transmission part, an elastic part and a cutting part; the driving part is rotatable around one end and is arranged on the shell, the transmission part connects the driving part and the elastic part, and converts the rotation of the driving part into the deformation of the elastic part, and the deformation of the elastic part causes the cutting part to extend or retract.

8. The sealing film cutting device according to claim 7, characterized in that: The transmission part includes a first slider and a second slider, the first slider is connected to the driving part and installed in the limiting groove of the housing, the second slider is installed in the installation groove in the housing, and the first slider and the second slider have conflicting contact surfaces; When the driving part rotates, the first slider slides in the limiting groove along the first direction and presses the second slider, so that the second slider slides in the installation groove along the second direction.

9. The sealing film cutting device according to claim 8, characterized in that: The elastic part is arranged in the mounting groove, and one end of the elastic part is fixed to the mounting groove, and the other end is connected to the second sliding block.

10. The sealing film cutting device according to claim 8, characterized in that: The cutting part comprises a cutter head, the cutter head and a connecting part, and the connecting part passes through the mounting groove to the housing and connects the second sliding block and the cutter head.

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