A longitudinal cutting knife device for producing a thin PVC plate

Abstract

The utility model relates to the field of PVC board production equipment, especially disclose a longitudinal cutting knife device for thin type PVC board production, it includes cutter barrel, the cutter barrel axle is provided with screw rod, be equipped with sliding cutter column in the cutter barrel, the screw rod is connected with sliding cutter column screw thread, sliding cutter column outer end is equipped with cutter groove, the cutter groove is inserted with cutting knife, be equipped with external thread column on the cutter groove, one end of external thread column is equipped with spring piece, spring piece connects pressure block, external thread column is connected thread cylinder screw thread, the utility model sets up the cutter groove, sets up external thread column and thread cylinder on the cutter groove, one end of external thread column is equipped with pressure block, when using, makes the cutting knife fastening in the cutter groove through the screwing of thread cylinder with pressure block, only needs to loosen the thread cylinder when replacing, it is convenient and fast.

Description

Technical Field

[0001] This utility model relates to the field of PVC board production equipment, and in particular to a longitudinal cutting device for producing thin PVC boards. Background Technology

[0002] PVC sheets come in various thicknesses, from thick (e.g., 10 mm) to thin (e.g., 5 mm). During production, PVC sheets need to be trimmed or divided into different sizes. Cutting thick PVC sheets requires more power, while cutting thinner sheets requires less. Using thick cutting blades would be wasteful and increase production costs. To address this, the applicant invented a longitudinal cutting structure specifically for thin PVC sheet production. However, the longitudinal cutting blade used in this structure is a common cutting blade, similar to a paper cutter, and is fixed with several bolts and nuts, making replacement and maintenance cumbersome. Utility Model Content

[0003] To overcome the shortcomings of the prior art, this utility model provides a slitting knife device for the production of thin PVC sheets that is easy to replace.

[0004] This utility model is achieved through the following technical solution: A slitting device for producing thin PVC sheets includes a blade cylinder, a screw shaft rotatably mounted on the blade cylinder, a sliding blade post inside the blade cylinder, and the screw threadedly connected to the sliding blade post; a blade groove is provided at the outer end of the sliding blade post, and a cutting blade is inserted into the blade groove; an externally threaded post is provided on the blade groove, a spring plate is provided at one end of the externally threaded post, the spring plate is connected to a pressure block, and the externally threaded post is threadedly connected to a threaded cylinder.

[0005] The side of the pressure block facing away from the knife groove is a conical arc surface.

[0006] The larger bottom diameter of the conical arc surface is smaller than the inner diameter of the threaded cylinder, and the smaller bottom diameter is smaller than the inner diameter of the threaded cylinder.

[0007] The pressure block has several protrusions on the side facing the knife groove.

[0008] The outer wall of the threaded cylinder is provided with a lever.

[0009] There are two levers, and they are located on the same diameter.

[0010] The cross-sections of the inner cavity of the cutter barrel and the sliding cutter column are matched elliptical shapes.

[0011] The cross-sections of the inner cavity of the cutter barrel and the sliding cutter column are matched polygons.

[0012] The cutter barrel and the sliding cutter column are connected by splines and spline groove keys.

[0013] The cutting blade has cut lines on its blade.

[0014] The beneficial effects of this utility model are: This utility model features a blade groove with an external threaded post and a threaded cylinder. One end of the external threaded post has a pressure block. During use, the pressure block secures the cutting blade in the blade groove by turning the threaded cylinder. When replacing the blade, simply loosen the threaded cylinder, making it convenient and quick.

[0015] This invention also features cutting grooves on the cutting blade. When the cutting blade wears out, it can be cut off at the cutting grooves, restoring the cutting blade to its original condition and saving costs. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the main view of the longitudinally cut structure. Figure 2 This is a top view of the longitudinally cut structure. Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure along the AA direction; Figure 4 for Figure 2 Enlarged structural diagram at point B; Figure 5 This is a schematic diagram of the right-side structure of the longitudinally cut structure. Figure 6 for Figure 5 Schematic diagram of the cross-sectional structure in the CC direction; Figure 7 for Figure 6 Enlarged structural diagram at point F; Figure 8 for Figure 2 Enlarged structural diagram at point D; Figure 9 for Figure 8 Enlarged structural diagram of the intermediate pressure block; Figure 10 for Figure 5 Enlarged structural diagram at point E; Figure 11 This is a schematic diagram of the cutting blade. Figure 12 This is a schematic diagram of the cross-sectional structure of the tool groove; Figure 13 A schematic diagram of the cross-sectional structure of one embodiment of the knife barrel; Figure 14This is a schematic diagram of the cross-sectional structure of another embodiment of the knife barrel; Figure 15 This is a schematic diagram of the cross-sectional structure of the third embodiment of the knife barrel.

[0018] In the diagram, 1 is the base, 2 is the rotating cylinder, 3 is the worm gear and worm, 4 is the hand crank, 5 is the lead screw, 6 is the slider, 7 is the cutter cylinder, 8 is the screw, 9 is the sliding cutter post, 10 is the cutting blade, 11 is the cutter groove, 12 is the external thread post, 13 is the spring plate, 14 is the pressure block, 15 is the protrusion, 16 is the threaded cylinder, 17 is the actuating rod, 18 is the cutting groove, and 19 is the spline and spline groove. Detailed Implementation

[0019] The attached figure shows a specific embodiment of this utility model.

[0020] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0021] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0022] like Figures 1 to 15 As shown, a longitudinal cutting structure suitable for the production of thin PVC sheets includes two bases 1, which are respectively installed on both sides of the frame of the production line. A rotating cylinder 2 is installed between the two bases 1. The rotating cylinder 2 is rotatable, and its rotation is achieved by a rotating device, specifically: A worm gear with a rotating shaft is installed on one of the bases 1, and a worm wheel is installed on the rotating cylinder 2. The worm wheel is matched with the worm gear 3. The rotating cylinder 2 is driven to rotate through the cooperation of the worm wheel and the worm gear 3. A hand crank 4 is installed at the end of the worm gear.

[0023] A lead screw 5 is installed on each base 1, and a hand crank 4 is also installed on the outer end of the lead screw 5. After the lead screw 5 extends into the inside of the rotating cylinder 2, a slider 6 is threadedly connected. An elongated hole is opened on the rotating cylinder 2. It can be a long elongated hole or two short elongated holes. After the slider 6 extends out of the elongated hole, a longitudinal cutting device is fixedly installed.

[0024] The longitudinal cutting device includes a cutter cylinder 7 fixed to the slider 6. The length of the cutter cylinder 7 is perpendicular to the length of the rotating cylinder 2. A rotating screw 8 is installed at one end of the cutter cylinder 7, and a hand crank 4 is also installed at the outer end of the screw 8. Inside the cutter cylinder 7 is a sliding cutter post 9, which is threadedly connected to the screw 8. Driven by the screw 8, the sliding cutter post 9 can only move along the axial direction of the cutter cylinder 7. Specifically, it can be as follows: Figure 13 As shown, the tool barrel 7 and the sliding tool post 9 are connected by a spline and a spline groove 19, or as... Figure 14 and Figure 15 As shown, the cross-section of the inner cavity of the cutter barrel 7 is non-circular, i.e., elliptical, polygonal, etc., while the cross-section of the sliding cutter column 9 is a shape that matches the inner cavity of the cutter barrel 7.

[0025] A cutting blade 10 is mounted on the outer end of the sliding blade post 9. The cutting blade 10 is movable and replaceable, and can have the following structure: A cutting groove 11 is fixedly connected to the outer end of the sliding cutting post 9. The cutting groove 11 has a T-shaped cross-section. The cutting blade 10 is inserted into the cutting groove 11. The cutting groove 11 has a clamping function for the cutting blade 10. That is to say, without external force, the cutting blade 10 will not fall out after being inserted into the cutting groove 11. An external threaded post 12 is fixed on the cutting groove 11. The cutting groove 11 passes through its axis. One end of the external threaded post 12 is connected to a pressure block 14 through a spring plate 13. The side of the pressure block 14 facing away from the cutting groove 11 is a conical arc surface. The external threaded post 12 is threadedly connected to a threaded cylinder 16. The larger bottom diameter of the conical arc surface is larger than the inner diameter of the threaded cylinder 16, that is, the diameter. The smaller bottom diameter of the conical arc surface is smaller than the inner diameter of the threaded cylinder 16. That is, during the process of turning the threaded cylinder 16, the threaded cylinder 16 gradually squeezes the pressure block 14 into contact with the cutting blade 10, forming pressure and fixing the cutting blade 10.

[0026] For ease of operation, a lever 17 is installed on the outer wall of the threaded cylinder 16, preferably two levers 17, and these two levers 17 are located on the same diameter.

[0027] The side of the pressure block 14 facing the knife groove 11 has several protrusions 15.

[0028] The cutting blade 10 can resemble an ordinary paper cutter. Several cutting grooves 18 are provided on the blade of the cutting blade 10 so that when the cutting blade 10 is not sharp, the tip part can be cut off at the cutting grooves 18, just like a paper cutter, so as to make it sharp again.

[0029] To facilitate adjustment between the two cutting blades 10, scale lines are engraved on the rotating cylinder 2.

[0030] Because the pressure block 14 is compressed during the rotation of the threaded cylinder 16, the pressure block 14 cannot always be parallel to the cutting blade 10 facing the blade groove 11. As a result, the protrusions 15 cannot all press against the cutting blade 10. Therefore, as Figure 8 and Figure 9 As shown, the side of the pressure block 14 facing the knife groove 11 can be set as an inclined surface, or it can be as follows: Figure 7 As shown, protrusion 15 is set to gradually increase in size from left to right.

[0031] In use, adjust the distance between the two cutting blades 10 according to the required width of the PVC board using the hand crank 4; then rotate the rotating cylinder 2 using another hand crank 4 so that the cutting blades 10 face the PVC board; and then adjust the height of the cutting blades 10 using the third hand crank 4 to cut the PVC board.

[0032] In this utility model, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "install," "connect," "join," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "join" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0035] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

[0036] Except for the technical features described in the specification, all other technical features are known to those skilled in the art.

Claims

1. A slitting device for producing thin PVC sheets, characterized in that, The device includes a cutter barrel (7), a screw (8) is rotatably mounted on the cutter barrel (7), a sliding cutter post (9) is provided inside the cutter barrel (7), and the screw (8) is threadedly connected to the sliding cutter post (9); a cutter groove (11) is provided at the outer end of the sliding cutter post (9), and a cutting blade (10) is inserted in the cutter groove (11); an external thread post (12) is provided on the cutter groove (11), a spring plate (13) is provided at one end of the external thread post (12), the spring plate (13) is connected to a pressure block (14), and the external thread post (12) is threadedly connected to a threaded cylinder (16).

2. The slitting device for producing thin PVC sheets according to claim 1, characterized in that, The side of the pressure block (14) facing away from the knife groove (11) is a conical arc surface.

3. The slitting device for producing thin PVC sheets according to claim 2, characterized in that, The larger bottom diameter of the conical arc surface is smaller than the inner diameter of the threaded cylinder (16), and the smaller bottom diameter is smaller than the inner diameter of the threaded cylinder (16).

4. The slitting device for producing thin PVC sheets according to claim 1, characterized in that, The pressure block (14) has several protrusions (15) on the side facing the knife groove (11).

5. The slitting device for producing thin PVC sheets according to claim 1, characterized in that, The outer wall of the threaded cylinder (16) is provided with a lever (17).

6. The slitting device for producing thin PVC sheets according to claim 5, characterized in that, There are two levers (17) and they are located on the same diameter.

7. The slitting device for producing thin PVC sheets according to claim 1, characterized in that, The cross-sections of the inner cavity of the cutter barrel and the sliding cutter column are matched elliptical shapes.

8. The slitting device for producing thin PVC sheets according to claim 1, characterized in that, The cross-sections of the inner cavity of the cutter barrel (7) and the sliding cutter column (9) are matched polygons.

9. The slitting device for producing thin PVC sheets according to claim 1, characterized in that, The cutter barrel (7) and the sliding cutter column (9) are connected by a spline and a spline groove (19).

10. The slitting device for producing thin PVC sheets according to claim 1, characterized in that, The cutting blade (10) has cutting grooves (18) on its blade.

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