Cutting mechanism for ultrathin PVC sheet processing line

Abstract

The utility model relates to the technical field of PVC sheet processing, in particular to a cutting mechanism for an ultrathin PVC sheet processing assembly line. Comprising a cutting table, a first conveying belt rotationally installed in the left side of the cutting table, a second conveying belt rotationally installed in the right side of the cutting table, a lower cutter installed in the middle of the cutting table and located between the first conveying belt and the second conveying belt, and a supporting frame integrally fixed to the upper end of the cutting table. According to the ultrathin PVC sheet cutting and conveying device, an original cutting mechanism is scientifically and reasonably improved, the air blowing disc, the air suction disc, the circulating fan and the communicating pipe are arranged on the cutting table to serve as a material pressing part, the leakage net belt is arranged between the two conveying belts, and non-contact auxiliary material pressing operation can be conducted on ultrathin PVC sheets in the cutting and conveying process; the problems of processing scratches, extrusion deformation and the like of the PVC sheets are effectively reduced, so that the quality of finished products after the PVC sheets are cut is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of PVC sheet processing, in particular to a cutting mechanism for an ultra-thin PVC sheet processing line. Background Art

[0002] Polyvinyl chloride film is made of polyvinyl chloride resin and other modifiers through calendering or blow molding. It is generally 0.08-0.2mm thick. Those thicker than 0.25mm are called PVC sheets. Plasticizers, stabilizers, lubricants and other functional processing aids are added to the PVC resin and calendered into film.

[0003] like Figure 4 As shown, a cutting mechanism currently installed on a PVC sheet processing line is used. Its main function is to cut long strips of PVC coiled material into multiple sections, so as to facilitate the subsequent processing of ultra-thin PVC sheets. However, this PVC sheet processing line cutting mechanism has the following shortcomings during actual use: In order to improve the stability of the PVC sheet during cutting and conveying, a vertically movable counterweight pressure roller is generally provided on both sides of the cutter above the cutting table. The counterweight pressure roller can apply downward gravity to the PVC sheet conveyed on the conveyor belt. However, it is found in actual use that the counterweight pressure roller used for pressing the material is prone to cause processing scratches and extrusion deformation on the surface of the PVC sheet, thereby reducing the quality of the finished product after the PVC sheet is cut.

[0004] In view of this, designing and manufacturing a pressing mechanism that can reduce scratches and extrusion deformation during the processing of ultra-thin PVC sheets is particularly important in the ultra-thin PVC sheet cutting mechanism. Utility Model Content

[0005] The utility model aims to solve the problems that the traditional cutting mechanism for ultra-thin PVC sheet processing line may cause processing scratches and extrusion deformation on the surface of the PVC sheet during the auxiliary pressing process during the cutting process, and proposes a cutting mechanism for ultra-thin PVC sheet processing line.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A cutting mechanism for an ultra-thin PVC sheet processing line comprises a cutting table, a first conveyor belt rotatably mounted inside the left side of the cutting table, a second conveyor belt rotatably mounted inside the right side of the cutting table, a lower cutting knife mounted in the middle of the cutting table and between the first conveyor belt and the second conveyor belt, a support frame integrally fixed to the upper end of the cutting table, an electric cylinder mounted on the upper end of the support frame, and an upper cutting knife mounted on the lower end of the electric cylinder and corresponding to the lower cutting knife, a mesh belt is mounted in the middle of the first conveyor belt and the second conveyor belt, and a material pressing portion for contactless auxiliary fixing during the PVC sheet cutting process is arranged between the inner side, the rear side and the upper end of the cutting table.

[0008] As a further description of the above technical solution:

[0009] The pressing part includes an air suction plate installed on the inner side of the cutting table and facing the screen belt, an air blowing plate installed on the upper end of the cutting table and above the air suction plate, a circulating fan installed at the rear end of the cutting table, and a connecting pipe installed among the air blowing plate, the air suction plate and the circulating fan.

[0010] As a further description of the above technical solution:

[0011] The interiors of the air blowing plate and the air suction plate are both hollow structures, and the upper end of the air blowing plate and the lower end of the air suction plate are both provided with a plurality of air holes distributed in a rectangular array.

[0012] As a further description of the above technical solution:

[0013] The upper end of the cutting table is located on both sides of the upper cutting knife and is provided with a material guide part for lateral auxiliary anti-deflection during the cutting process of the PVC sheet.

[0014] As a further description of the above technical solution:

[0015] The material guiding part comprises two groups of fixed blocks symmetrically fixed on the upper end of the cutting table and located on both sides of the upper cutting knife, a damping slide rod longitudinally installed between the two groups of fixed blocks, a damping slide sleeve slidably installed on the outside of the damping slide rod, and a limit stopper installed on the outside of the damping slide sleeve.

[0016] As a further description of the above technical solution:

[0017] A driving motor connected to the first conveyor belt is installed on the left side of the rear end of the cutting table, and a synchronous belt passing between the first conveyor belt and the second conveyor belt establishes a linkage connection.

[0018] As a further description of the above technical solution:

[0019] The four corners of the lower end of the cutting table are integrally fixedly connected with mounting ribs in an L-shaped structure, and mounting holes are opened on the horizontal ends of the mounting ribs.

[0020] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0021] 1. In the utility model, the original cutting mechanism is scientifically and rationally improved, and a blowing disc, an air suction disc, a circulating fan and a connecting pipe are arranged on the cutting table as a material pressing part, and a leakage belt is arranged in the middle of the two conveyor belts. When the circulating fan is working, the air suction disc is evacuated and the air blowing disc is blown through the connecting pipe. At this time, a circulating airflow from top to bottom will be generated on the cutting table. Under the action of the airflow, the PVC sheet can be blown down and fixed on the leakage belts of the two conveyor belts. This structure can perform contactless auxiliary material pressing operations on ultra-thin PVC sheets during cutting and conveying, effectively reducing the occurrence of problems such as processing scratches and extrusion deformation of PVC sheets, thereby improving the quality of finished products after PVC sheets are cut.

[0022] 2. In the utility model, a fixed block, a damping slide rod, a damping sleeve and a limit block are newly added to the original cutting table, and two limit blocks are arranged on the damping slide rod. The damping sleeve can be used to perform longitudinal sliding adjustment operation on the damping slide rod to match the width of the PVC sheet. This structure can perform lateral anti-bias guiding treatment on the PVC sheet during the cutting and conveying process, and is used in conjunction with the above-mentioned pressing part to further improve the working stability of the cutting mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic structural diagram of a cutting mechanism for an ultra-thin PVC sheet processing line proposed by the utility model;

[0024] Figure 2 It is a three-dimensional rear view schematic diagram of the utility model;

[0025] Figure 3 It is a three-dimensional left-side longitudinal section schematic diagram of the utility model;

[0026] Figure 4 The present invention is a schematic diagram of the structure of a cutting mechanism used in a PVC sheet processing line in the prior art.

[0027] Legend:

[0028] 1. Cutting table; 101. Lower cutting knife; 102. Support frame; 103. Mounting ribs; 2. First conveyor belt; 3. Second conveyor belt; 4. Driving motor; 401. Synchronous belt; 5. Screen belt; 6. Electric cylinder; 601. Upper cutting knife; 7. Blowing plate; 8. Suction plate; 9. Circulating fan; 901. Connecting pipe; 10. Fixing block; 11. Damping slide rod; 12. Damping sleeve; 13. Limit block. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] See also Figure 1-3 The utility model provides a technical solution: a cutting mechanism for an ultra-thin PVC sheet processing line, comprising a cutting table 1, a first conveyor belt 2 rotatably installed inside the left side of the cutting table 1, a second conveyor belt 3 rotatably installed inside the right side of the cutting table 1, a lower cutter 101 installed in the middle of the cutting table 1 and between the first conveyor belt 2 and the second conveyor belt 3, a support frame 102 integrally fixed to the upper end of the cutting table 1, an electric cylinder 6 installed at the upper end of the support frame 102, and an upper cutter 601 installed at the lower end of the electric cylinder 6 and corresponding to the lower cutter 101, a leakage screen belt 5 is installed in the middle of the first conveyor belt 2 and the second conveyor belt 3, and a pressing part for contactless auxiliary fixation during the cutting process of the PVC sheet is arranged between the inner side, the rear side and the upper end of the cutting table 1.

[0031] Specifically, Figure 1-3 As shown, the pressing part includes an air suction plate 8 installed on the inner side of the cutting table 1 and facing the leakage screen belt 5, an air blowing plate 7 installed on the upper end of the cutting table 1 and located above the air suction plate 8, a circulating fan 9 installed at the rear end of the cutting table 1, and a connecting pipe 901 installed between the air blowing plate 7, the air suction plate 8 and the circulating fan 9, wherein the interiors of the air blowing plate 7 and the air suction plate 8 are both hollow structures, and the upper end of the air blowing plate 7 and the lower end of the air suction plate 8 are provided with a plurality of air holes distributed in a rectangular array.

[0032] Specifically, Figure 1-3 As shown, the upper end of the cutting table 1 is located on both sides of the upper cutter 601 and is provided with a material guide part for lateral auxiliary anti-deflection during the cutting process of the PVC sheet. The material guide part includes two groups of fixed blocks 10 symmetrically fixed on the upper end of the cutting table 1 and located on both sides of the upper cutter 601, a damping slide bar 11 longitudinally installed between the two groups of fixed blocks 10, a damping sleeve 12 slidably installed on the outside of the damping slide bar 11 and a limit stop block 13 installed on the outside of the damping sleeve 12.

[0033] Specifically, Figure 1-3 As shown, a driving motor 4 connected to the first conveyor belt 2 is installed on the left side of the rear end of the cutting table 1, and a synchronous belt 401 passing between the first conveyor belt 2 and the second conveyor belt 3 establishes a linkage connection.

[0034] The four corners of the lower end of the cutting table 1 are integrally fixedly connected with mounting ribs 103 in an L-shaped structure, and mounting holes are opened on the horizontal ends of the mounting ribs 103 .

[0035] Working principle: When in use, the cutting table 1 is installed and fixed to the cutting station of the PVC processing line as a whole by installing the ribs 103 and fasteners, and then the control circuit of the cutting mechanism is connected to the control terminal of the PVC processing line, and the installation of the cutting mechanism is completed. Before the actual cutting process, according to the width of the PVC sheet, the limit blocks 13 on the two damping slide bars 11 on the cutting table 1 are adjusted so that the two limit blocks 13 on the damping slide bars 11 can just fit the side wall of the PVC sheet, which can limit the lateral deviation of the PVC sheet during the subsequent cutting and conveying process; when the cutting mechanism is working, the driving motor 4 can drive the first conveyor belt 2 to rotate, and the synchronous belt 40 1, the first conveyor belt 2 and the second conveyor belt 3 can rotate synchronously to transport the PVC sheet between the first conveyor belt 2 and the second conveyor belt 3, and the electric cylinder 6 can drive the upper cutter 601 to move in the direction of the lower cutter 101 to cut the PVC sheet. At the same time, when the circulating fan 9 is working, it will evacuate the suction disk 7 and blow the blowing disk 8 through the connecting pipe 901. At this time, a circulating airflow from top to bottom will be generated on the cutting table 1. Under the action of the airflow, the PVC sheet can be blown down and fixed on the leakage belt 5 of the first conveyor belt 2 and the second conveyor belt 3, thereby improving the stability of the PVC sheet during cutting and transportation.

[0036] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A cutting mechanism for an ultra-thin PVC sheet processing line, comprising a cutting table (1), a first conveyor belt (2) rotatably mounted inside the left side of the cutting table (1), a second conveyor belt (3) rotatably mounted inside the right side of the cutting table (1), a lower cutting knife (101) mounted in the middle of the cutting table (1) between the first conveyor belt (2) and the second conveyor belt (3), a support frame (102) integrally fixed to the upper end of the cutting table (1), an electric cylinder (6) mounted on the upper end of the support frame (102), and an upper cutting knife (601) mounted on the lower end of the electric cylinder (6) and corresponding to the lower cutting knife (101), characterized in that: A mesh belt (5) is installed in the middle of the first conveyor belt (2) and the second conveyor belt (3), and a material pressing part for contactless auxiliary fixation during the cutting process of the PVC sheet is provided between the inner side, the rear side and the upper end of the cutting table (1).

2. A cutting mechanism for an ultra-thin PVC sheet processing line according to claim 1, characterized in that: The material pressing section comprises an air suction plate (8) installed on the inner side of the cutting table (1) and facing the screen belt (5), an air blowing plate (7) installed on the upper end of the cutting table (1) and located above the air suction plate (8), a circulating fan (9) installed at the rear end of the cutting table (1), and a connecting pipe (901) installed between the air blowing plate (7), the air suction plate (8) and the circulating fan (9).

3. A cutting mechanism for an ultra-thin PVC sheet processing line according to claim 2, characterized in that: The interiors of the air blowing plate (7) and the air suction plate (8) are both hollow structures, and the upper end of the air blowing plate (7) and the lower end of the air suction plate (8) are both provided with a plurality of air holes distributed in a rectangular array.

4. The cutting mechanism for an ultra-thin PVC sheet processing line according to claim 1, characterized in that: The upper end of the cutting platform (1) is provided with material guide parts on both sides of the upper cutting knife (601) for assisting in lateral anti-deflection during the cutting process of the PVC sheet.

5. The cutting mechanism for an ultra-thin PVC sheet processing line according to claim 4, characterized in that: The material guiding part comprises two groups of fixed blocks (10) symmetrically fixed on the upper end of the cutting table (1) and located on both sides of the upper cutting knife (601), a damping slide bar (11) longitudinally installed between the two groups of fixed blocks (10), a damping slide sleeve (12) slidably installed on the outside of the damping slide bar (11), and a limit stopper (13) installed on the outside of the damping slide sleeve (12).

6. The cutting mechanism for an ultra-thin PVC sheet processing line according to claim 1, characterized in that: A driving motor (4) connected to the first conveyor belt (2) is installed on the left side of the rear end of the cutting table (1), and a synchronous belt (401) passing between the first conveyor belt (2) and the second conveyor belt (3) establishes a linkage connection.

7. The cutting mechanism for an ultra-thin PVC sheet processing line according to claim 1, characterized in that: The four corners at the lower end of the cutting table (1) are integrally fixedly connected with mounting ribs (103) in an L-shaped structure, and mounting holes are provided on the horizontal ends of the mounting ribs (103).

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