Embedded hot cutting structure and hot cutting device

Abstract

The utility model discloses an embedded hot cutting structure and a hot cutting device. The embedded hot cutting structure comprises a cutting knife and a heating wire. The cutting knife is suitable for being in contact extrusion with the to-be-cut edge slitter edge of the blank through the cutting end, the heating wire is embedded in the cutting knife, and then the heating wire is heated and transferred to the cutting end so as to carry out hot melting cutting on the slitter edge of the blank. The hot cutting device comprises the embedded hot cutting structure. The hot melting cutting device has the beneficial effects that the heating wire and the cutting knife are installed in a matched mode, so that a blank can be subjected to hot melting cutting, and compared with a traditional cutting mode, the production efficiency and the production quality of products can be effectively improved; and the heating wire is internally arranged, so that the heating wire can be protected, and the service life of the heating wire is further prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of automobile parts processing, and in particular to an embedded hot cutting structure and a hot cutting device. Background Art

[0002] Automobile interior parts can generally be obtained by low-pressure injection molding or hot pressing to obtain corresponding plastic interior parts; with the improvement of living standards, a layer of leather can be adhered to the surface of the plastic interior parts after low-pressure injection molding or hot pressing to increase the appearance and softness. The adhesion of leather can be achieved by coating or hot pressing lamination.

[0003] Whether it is a plastic interior part formed by low-pressure injection molding or hot pressing, or a multi-layer interior part obtained by coating or hot pressing, after completing the corresponding processing technology, the excess waste of the blank needs to be cut. Take hot pressing as an example. During hot pressing, the area of ​​the leather is larger than the surface area of ​​the plastic interior part. After the pressing is completed, the edge of the blank will extend with excess leather waste, which needs to be cut along the edge contour of the blank to obtain the desired product.

[0004] The existing technology for cutting excess waste mainly places the blank on a fixture for positioning, and then uses a robot to carry a cutting knife to cut along the contour direction of the blank. However, the processing accuracy required for cutting by the robot is high, which makes the cost of the entire cutting equipment high. In addition, the robot needs to move along the entire contour of the blank, and the position of the robot needs to be adjusted at all times according to the direction of the contour, which will result in a longer cutting process time, thereby reducing production efficiency. Based on this, a new cutting equipment for automotive interior parts is urgently needed. Utility Model Content

[0005] One of the objectives of the present application is to provide an embedded thermal cutting structure that can solve at least one of the defects in the above-mentioned background technology.

[0006] Another object of the present application is to provide a heat cutting device that can overcome at least one of the defects in the above-mentioned background technology.

[0007] In order to achieve at least one of the above-mentioned purposes, the technical solution adopted in the present application is: an embedded hot cutting structure, including a cutting knife and a heating wire; the cutting knife is suitable for contacting and extruding the edge waste of the blank to be cut through the cutting end, and the heating wire is embedded in the interior of the cutting knife, and then the heating wire is heated and transferred to the cutting end to perform hot melt cutting of the waste edge of the blank.

[0008] Preferably, at least one end of the cutting knife is provided with a sharp corner to form the cutting end; the heating wires are embedded in the cutting knife and are equidistantly arranged along the extending direction of the sharp corner of the cutting knife.

[0009] Preferably, the distance from the heating wire to the cutting knife tip angle is less than or equal to 3 times the cross-sectional width of the heating wire.

[0010] Preferably, the distance from the heating wire to the cutting blade corner is 1.5 to 2 times the cross-sectional width of the heating wire.

[0011] Preferably, the cutting blade is made of metal, and the cutting blade is filled with a filler made of a heat-conductive material, and the filler is suitable for pressing and positioning the heating wire.

[0012] Preferably, the heating wire is a resistance wire, the filler is a heat-conducting insulating material, and the heating wire is spaced apart from the inner wall of the cutting knife by the filler.

[0013] Preferably, the heating wire comprises a resistance wire, a protective shell and an insulating heat-conducting layer; the resistance wire is arranged in the protective shell and is spaced from the protective shell by the insulating heat-conducting layer.

[0014] A hot cutting device comprises a displacement device, a cutting knife and a heating wire; the displacement device is fixedly arranged, and the cutting knife is installed at the output end of the displacement device according to a set angle position, so that the cutting knife is driven by the displacement device to approach and press the edge of the blank; the heating wire is installed on the cutting knife to form the above-mentioned embedded hot cutting structure.

[0015] Preferably, a connecting plate is installed at the output end of the displacement device, and the cutting knife is installed on the connecting plate at a set angle.

[0016] Preferably, the hot cutting device further comprises a mounting seat, the mounting seat is fixedly arranged, and the displacement device together with the cutting knife are mounted on the mounting seat at a set angle position.

[0017] Compared with the prior art, the beneficial effects of this application are:

[0018] By installing the heating wire in conjunction with the cutting knife, the blank can be cut by hot melt. Compared with the traditional cutting method, it can effectively improve the production efficiency and production quality of the product. In addition, the built-in setting of the heating wire can protect the heating wire to further increase the service life of the heating wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the hot cutting device in this application.

[0020] Figure 2 It is a schematic diagram of the structure of the cutting knife in this application.

[0021] Figure 3 It is a schematic diagram of the partial cross-sectional structure of the cutting knife in the present application when viewed from the side.

[0022] Figure 4 It is a schematic diagram of the cross-sectional structure of the cutting knife in the present application when viewed from above.

[0023] In the figure: a hot cutting device 3, a mounting seat 31, a displacement device 32, a connecting plate 33, a cutting knife 34, a fixing block 341, a connecting port 3411, a filling material 342, and a heating wire 500. DETAILED DESCRIPTION

[0024] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0025] In the description of the present application, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of narrating the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of the present application.

[0026] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0027] The terms "including" and "having" and any variations thereof in the specification and claims of this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0028] One aspect of the present application provides a hot cutting device, wherein a preferred embodiment is as follows Figure 1As shown. The hot cutting device 3 includes a displacement device 32, a cutting knife 34 and a heating wire 500. The displacement device 32 is fixedly installed, and the displacement device 32 is fixedly set. The cutting knife 34, as the cutting end of the hot cutting device 3, can be installed at the output end of the displacement device 32 according to the set angle position; the heating wire 500 can be installed inside the cutting knife 34 to form an embedded hot cutting structure. When it is necessary to cut the edge waste of the blank, the cutting knife 34 can be driven by the displacement device 32 to move toward the position of the blank until the cutting end of the cutting knife 34 presses the edge waste of the blank. The heating wire 500 can be powered on for heating, and then the heat can be transferred to the waste edge of the blank through the cutting knife 34 to perform melting and cutting.

[0029] It is understandable that the hot cutting device 3 of the present application cooperates with the cutting knife 34 and the heating wire 500 to achieve hot melt cutting of the blank. Compared with the traditional method of cutting with a blade, the present application can automatically achieve melting edge sealing after completing the cutting of the waste edge of the blank, so that the edge contour of the product is smooth, thereby effectively improving the production quality of the product. In addition, the present application has relatively low requirements for the design accuracy and subsequent maintenance of the device through hot melt cutting, while ensuring the cutting production life, it can also effectively reduce production costs. At the same time, external installation of the heating wire 500 can facilitate subsequent maintenance.

[0030] In this embodiment, the edge profile of the blank is not necessarily straight and horizontal. For edge profiles of different shapes and inclined angles, a cutting knife 34 with a corresponding angle can be set for cutting. There are many specific installation methods for the cutting knife 34 to correspond to the edge of the blank. For easy understanding, two specific examples will be used for detailed description below.

[0031] Example 1: A connecting plate 33 is installed at the output end of the displacement device 32, and the cutting knife 34 can be installed on the connecting plate 33 at a set angle position, so that the cutting knife 34 can be aligned with the edge contour of the blank and pressed under the drive of the displacement device 32.

[0032] Example 2: Figure 1 As shown, the hot cutting device 3 also includes a mounting seat 31 , and a displacement device 32 together with a cutting knife 34 are mounted on the mounting seat 31 at a set angle, and then the cutting knife 34 is aligned with the edge contour of the blank and pressed under the drive of the displacement device 32 .

[0033] It should be known that the above two installation methods can both meet the requirements of this application. To facilitate the description of the subsequent content, the subsequent content will take Example 2 as an example for detailed description.

[0034] Specifically, Figure 1As shown, one end of the mounting seat 31 can be detachably fixed by fasteners such as bolts, and the other end of the mounting seat 31 can be set with a mounting plane of a corresponding inclination angle according to the cutting position of the blank corresponding to the hot cutting device 3. The displacement device 32 can be stably mounted on the mounting plane of the mounting seat 31 by fasteners, and then the cutting knife 34 can be fixedly mounted on the connecting plate 33 at the output end of the displacement device 32, and then the displacement device 32 will drive the cutting knife 34 to approach the blank at the installation set angle. The specific structure and working principle of the displacement device 32 are well known to those skilled in the art, so they will not be elaborated in detail here; common displacement devices 32 include linear motors, cylinders, hydraulic cylinders, etc., and hydraulic cylinders are preferably used in this embodiment.

[0035] Specifically, Figure 1 and Figure 2 As shown, in order to facilitate the installation of the cutting knife 34, the cutting knife 34 can be detachably fixed by a fixing block 341 arranged on the side away from the cutting direction and a connecting plate 33 at the output end of the displacement device 32, thereby facilitating the installation and replacement of the cutting knife 34 without hindering the cutting by the cutting knife 34.

[0036] Another aspect of the present application provides an embedded heat-cut structure, such as Figures 2 to 4 As shown, one preferred embodiment includes a cutting knife 4 and a heating wire 500. The cutting knife 34 can be in contact with and squeezed with the edge waste of the blank to be cut through the cutting end, and the heating wire 500 is embedded in the cutting knife 34, and then the heating wire 500 can transfer heat to the cutting end of the cutting knife 34 by means of electrical heating, and then the cutting end of the cutting knife 34 can perform thermal melting and cutting of the waste edge of the blank.

[0037] It should be known that by installing the heating wire 500 in conjunction with the cutting knife 34 to achieve hot-melt cutting of the blank, the present application can automatically achieve melting edge sealing after completing the cutting of the waste edge of the blank, so that the edge contour of the product is smooth, thereby effectively improving the production quality of the product. In addition, the present application has relatively low requirements for the design accuracy and subsequent maintenance of the device through hot-melt cutting, while ensuring the cutting production life, it can also effectively reduce production costs. Compared with the traditional cutting method, it can effectively improve the production efficiency and production quality of the product, and the built-in setting of the heating wire 500 can protect the heating wire 500 to further improve the service life of the heating wire 500.

[0038] In this embodiment, Figures 1 to 3As shown, in order to further improve the cutting accuracy of the cutting blade 34 on the blank, at least one end of the cutting blade 34 can be set with a sharp angle to form the required cutting end. The heating wire 500 is embedded in the cutting blade 34 and close to the sharp angle of the cutting blade 34; and in order to ensure that the heating wire 500 heats each position of the sharp angle of the cutting blade 34 evenly, the heating wire 500 can be set equidistantly along the extension direction of the sharp angle of the cutting blade 34. That is, along the extension direction of the sharp angle of the cutting blade 34, the distance from each point on the edge line of the sharp angle of the cutting blade 34 to the heating wire 500 is equal, and then the efficiency and time of the heating wire 500 transmitting heat to each position of the sharp angle after heating are basically the same.

[0039] In this embodiment, Figure 3 As shown, in order to further ensure the heat transfer efficiency of the heating wire 500, the value of the distance Y from the heating wire 500 to the sharp corner of the cutting knife 34 should not be too large. Too large a distance will lead to low heat transfer efficiency. Generally speaking, the value of the distance Y from the heating wire 500 to the sharp corner of the cutting knife 34 can be less than or equal to 3 times the cross-sectional width of the heating wire 500. The specific value of the distance Y can be determined according to the angle corresponding to the sharp corner of the cutting knife 34 and the specific cross-sectional size of the heating wire 500; in this embodiment, the value of the distance Y is preferably 1.5 to 2 times the cross-sectional width of the heating wire 500.

[0040] In this embodiment, Figure 3 and Figure 4 As shown, in order to ensure the thermal cutting efficiency of the cutting knife 34, the cutting knife 34 can be made of a material with good thermal conductivity, such as a metal material. At the same time, in order to facilitate the installation of the heating wire 500, the interior of the cutting knife 34 is generally a hollow structure, that is, the cutting knife 34 is a thin-walled hollow structure. Then, after the heating wire 500 is installed inside the cutting knife 34, it is easy to deviate from the position during the movement of the cutting knife 34, which will cause the sharp corners of the cutting knife 34 to be heated unevenly, thereby affecting the quality and efficiency of the waste edge cutting of the blank. Therefore, the interior of the cutting knife 34 can be filled with a filler 342 of a thermally conductive material, and the filler 342 can press and position the installation position of the heating wire 500, thereby ensuring that the cutting knife 34 is heated evenly.

[0041] In this embodiment, the specific structure of the heating wire 500 varies according to different installation methods. For ease of understanding, two specific examples are used for detailed description below.

[0042] Specific example 1: Figure 3 and Figure 4As shown, the heating wire 500 directly adopts a resistance wire, and the filler 342 adopts a heat-conducting insulating material, and the heating wire 500 needs to be spaced apart from the inner wall of the cutting knife 34 by the filler 342, so that while the heating wire 500 heats the sharp corners of the cutting knife 34, the metal cutting knife 34 can avoid the electrical influence on the heating wire 500.

[0043] It should be known that there are many types of fillers 342 with good thermal conductivity and insulation, and common ones include aluminum oxide powder, aluminum nitride powder, silicon nitride powder, etc. The filler 342 in powder form is not only convenient for filling, but also can be pressed to stably position the heating wire 500.

[0044] Specific example 2: The heating wire 500 includes a resistance wire, a protective shell, and an insulating heat-conducting layer; the resistance wire is disposed in the protective shell and is separated from the protective shell by the insulating heat-conducting layer. Since the heating wire 500 can be protected by the insulating heat-conducting layer, in order to further improve the heat transfer efficiency of the heating wire 500, the heating wire 500 can contact the inner wall of the cutting knife 34 through the protective shell to obtain the minimum distance Y value.

[0045] It should be known that the heating wire 500 can be protected by the insulating heat-conducting layer, so the filler 342 only needs to have good thermal conductivity, and whether it has insulation can be determined according to actual needs. In order to ensure the safety of the use of the heating wire 500, the filler 342 preferably has good thermal conductivity and insulation. The specific type of the filler 342 can refer to the above-mentioned specific example 1. The specific type of the insulating heat-conducting layer can also refer to the filler 342.

[0046] In this embodiment, Figure 4 As shown, a connection port 3411 is provided in the middle of the fixed block 341 on one side of the cutting knife 34. After the heating wire 500 is installed inside the cutting knife 34, the terminal can be extended along the connection port 3411, and then the terminal of the heating wire 500 can be protected by the fixed block 341 to reduce or avoid wear and tear and the occurrence of short circuits and other faults.

[0047] The above describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and the specification only describe the principles of the present application. The present application may have various changes and improvements without departing from the spirit and scope of the present application, and these changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the attached claims and their equivalents.

Claims

1. An embedded hot-cut structure, characterized in that: It includes a cutting knife and a heating wire; the cutting knife is suitable for contacting and extruding the edge waste of the blank to be cut through the cutting end, and the heating wire is embedded in the cutting knife, and then the heating wire is heated and transferred to the cutting end to perform hot-melt cutting of the waste edge of the blank.

2. The embedded heat-cut structure according to claim 1, characterized in that: At least one end of the cutting blade is provided with a sharp corner to form the cutting end; the heating wire is embedded in the cutting blade and is arranged equidistantly along the extending direction of the sharp corner of the cutting blade.

3. The embedded heat-cut structure according to claim 2, characterized in that: The distance from the heating wire to the cutting blade corner is less than or equal to 3 times the cross-sectional width of the heating wire.

4. The embedded heat-cut structure according to claim 3, characterized in that: The distance from the heating wire to the cutting blade corner is 1.5 to 2 times the cross-sectional width of the heating wire.

5. The embedded hot-cut structure according to any one of claims 1 to 4, characterized in that: The cutting blade is made of metal and is filled with a filler made of a heat-conducting material. The filler is suitable for pressing and positioning the heating wire.

6. The embedded heat-cut structure according to claim 5, characterized in that: The heating wire is a resistance wire, the filling material is a heat-conducting insulating material, and the heating wire is spaced apart from the inner wall of the cutting knife by the filling material.

7. The embedded heat-cut structure according to claim 5, characterized in that: The heating wire comprises a resistance wire, a protective shell and an insulating heat-conducting layer; the resistance wire is arranged in the protective shell and is spaced from the protective shell by the insulating heat-conducting layer.

8. A hot cutting device, characterized in that: It comprises a displacement device, a cutting knife and a heating wire; the displacement device is fixedly arranged, and the cutting knife is installed at the output end of the displacement device according to a set angle position, so that the cutting knife is driven by the displacement device to approach and press the edge of the blank; The heating wire is installed on the cutting knife to form the embedded heat cutting structure according to any one of claims 1-7.

9. The hot cutting device according to claim 8, characterized in that A connecting plate is installed at the output end of the displacement device, and the cutting knife is installed on the connecting plate at a set angle.

10. The hot cutting device according to claim 8, characterized in that The hot cutting device also includes a mounting seat, which is fixedly arranged, and the displacement device together with the cutting knife is installed on the mounting seat according to a set angle position.

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