Trimming device
By designing cutting blades with different depths to collaboratively cut PFA sheets, the problems of cutting position offset and yielding during the trimming process are solved, achieving efficient and accurate trimming operations.
Patent Information
- Application Number
- CN202422871654.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-25
- Publication Date
- 2025-09-23
- Estimated Expiration
- 2034-11-25
AI Technical Summary
When PFA sheets need to be trimmed after cooling, due to their large thickness and inability to be fixed in a moving state, the cutting position will shift and yield.
A trimming device is designed, which uses two cutting blades. The cutting blades with different depths cut into one-third to one-half of the thickness of the plate and greater than the thickness respectively. Through coordinated cutting, the cutting force is reduced and the cutting position is prevented from being offset.
Effectively prevent the plate from yielding, ensure accurate cutting position and improve production efficiency.
Smart Images
Figure CN223369846U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to PFA plate trimming equipment, and more particularly to a trimming device. Background Art
[0002] PFA sheet is a film-like structure formed after extrusion molding and cooling. Due to its large thickness, which can reach over 5mm, it is called a sheet. After cooling, PFA sheet needs to be trimmed at both ends along its length. Because PFA sheet is in a moving state during conveying and is thick, it cannot be pressed together and fixed while in motion. When trimmed and cut, the PFA sheet will yield, easily bending, and cause the cutting position to shift. Utility Model Content
[0003] The purpose of the present invention is to overcome the above-mentioned deficiencies of the prior art and provide a trimming device that reduces the cutting force and prevents the plate body from yielding and causing the cutting position to shift.
[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a trimming device, including a fixed block and a base, the fixed block is equipped with a shaft rod, the shaft rod can rotate along its own axis, two shaft rods are provided, the shaft rod is equipped with a cutting blade, the cutting blade is located above the base, a groove body is provided at the upper end of the base, the cutting blade and the groove body are arranged opposite to each other up and down, the cutting blade is used to cut the plate body, the plate body is transmitted horizontally along the upper end of the base and passes through the two cutting blades, the fixed block is located on both sides of the transmission direction of the plate body, the projection of the center line of the two cutting blades on the plate body is along the transmission direction of the plate body, the bottom position of one cutting blade is higher than the bottom position of the other cutting blade, the cutting blade with a higher bottom position is located at one end of the plate body entering the two cutting blades, and the cutting blade with a lower bottom position is located at one end of the plate body leaving the two cutting blades.
[0005] The utility model is further configured such that a cushion block is installed on the upper end of the fixing block, the lower end surface of the cushion block is in contact with the upper end surface of the fixing block, and the lower end surface of the cushion block gradually tilts downward along the transmission direction of the plate body.
[0006] The utility model is further configured such that the fixed block 1 is installed with a bushing, the shaft rod passes through the bushing and the two are connected by a bearing, the fixed block 1 is also installed with a motor, the output end of the motor is connected to the shaft rod through a gear pair, so that the motor drives the shaft rod to rotate.
[0007] The utility model is further configured such that the shaft rod passes through the cutting blade, the shaft rod is sleeved with an adjusting ring, the adjusting ring abuts against one end face of the cutting blade, the end of the shaft rod is sleeved with a cover sleeve, and the cover sleeve presses the other end face of the cutting blade.
[0008] The utility model is further configured such that the shaft is provided with a convex ring, the convex ring is located on a side of the adjustment ring away from the cutting blade, the convex ring is mounted with an adjustment component, the adjustment component passes through the convex ring and abuts against the adjustment ring.
[0009] The utility model is further configured such that the adjusting component is a screw, and the adjusting component is threadedly connected to the convex ring.
[0010] The present invention is further configured such that the cutting blade at a higher bottom position cuts into the plate body to a depth of one third to one half of the thickness of the plate body.
[0011] The present invention is further configured such that the cutting blade at a lower bottom position cuts into the plate body to a depth greater than the thickness of the plate body.
[0012] In summary, the present invention has the following beneficial effects:
[0013] The cutting blade at the higher bottom position cuts into the sheet body to a depth of one third to one half of the sheet body thickness, so that the cutting blade reduces the amount of cutting required for the sheet body later. The cutting blade at the lower bottom position cuts into the sheet body to a depth greater than the sheet body thickness, so as to completely cut the sheet body. The two cutting blades trim and cut in coordination, which greatly reduces the cutting force and prevents the sheet body from yielding and causing the cutting position to shift, so that the sheet body can complete the trimming operation while being transported and moved, thereby improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 is a cross-sectional view of an embodiment;
[0015] Figure 2 for Figure 1 Cross-sectional view in the MM direction;
[0016] Figure 3 for Figure 2 Enlarged view of point A in the middle.
[0017] Figure numerals: plate body 1, fixing block 1 2, bushing 21, bearing 22, pad 23, fixing block 2 24, motor 3, gear pair 4, shaft 5, convex ring 51, cutting blade 6, adjusting component 7, adjusting ring 8, cover sleeve 9, base 10, trough body 101. DETAILED DESCRIPTION
[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0019] like Figure 1-Figure 3 As shown, this embodiment discloses a trimming device for cutting and trimming both ends of a plate body 1 in a width direction, and the plate body 1 is a PFA plate. Figure 1 In the figure, the PFA sheet is cooled after being extruded and transported from right to left to the upper end of the base 10, and the transport direction of the sheet body 1 is along the horizontal direction.
[0020] like Figure 2 As shown, the trimming device includes fixed block 1 2, which is located on both sides of the sheet material 1 in the conveying direction. Pads 23 are mounted on the upper ends of fixed block 1 2. The lower end faces of pads 23 abut against the upper end faces of fixed block 1 2, and the lower end faces of pads 23 gradually tilt downward along the conveying direction of the sheet material 1. Pads 23 are mounted on fixed block 2 24.
[0021] The fixing block 1 2 is equipped with two bushings 21, which are inserted into the fixing block 1 2 through interference fit. Figure 3 , the shaft 5 passes through the bushing 21 and the two are connected by a bearing 22. The shaft 5 can rotate along its own axis. Specifically, the fixed block 2 is also equipped with a motor 3, and the output end of the motor 3 is connected to the shaft 5 through a gear pair 4, so that the motor 3 drives the shaft 5 to rotate.
[0022] like Figure 3 As shown, the shaft 5 is provided with a raised ring 51, which extends radially outward from the outer wall of the shaft 5 to form a circular ring-shaped structure. The shaft 5 is fitted with an adjustment ring 8, which is an annular structure, with its end face facing the end face of the raised ring 51. The raised ring 51 is mounted with an adjustment component 7, which is a screw and threadedly connected to the raised ring 51. The adjustment component 7 passes through the raised ring 51 and abuts the adjustment ring 8. The shaft 5 is fitted with a cutting blade 6, which passes through the cutting blade 6. The adjustment ring 8 abuts one end face of the cutting blade 6. A cover 9 is mounted on the end of the shaft 5, which compresses the other end face of the cutting blade 6 and is threadedly connected to the shaft 5. The axial position of the adjustment ring 8 on the shaft 5 is adjusted by adjusting the depth of the adjustment component 7 into the raised ring 51, thereby adjusting the axial position of the cutting blade 6 on the shaft 5 to ensure that the projection of the center line connecting the two cutting blades 6 on the sheet material body 1 is along the conveying direction of the sheet material body 1.
[0023] like Figure 1As shown, the cutting blade 6 is located above the base 10, and a trough 101 is provided at the upper end of the base 10. The cutting blade 6 and the trough 101 are arranged opposite each other up and down. The sheet body 1 is transported horizontally along the upper end of the base 10 and passes through the two cutting blades 6, wherein the bottom position of the cutting blade 6 on the right is higher than the bottom position of the cutting blade 6 on the left. The cutting blade 6 with a higher bottom position is located at the end of the sheet body 1 entering the two cutting blades 6, and the cutting blade 6 with a lower bottom position is located at the end of the sheet body 1 leaving the two cutting blades 6. Since the sheet body 1 remains in a conveying and moving state and is relatively thick, the resistance to direct trimming and cutting is relatively large, and the sheet body 1 cannot be pressed and fixed up and down in a moving state. The sheet body 1 will yield when being trimmed and cut, and is prone to bending, resulting in a shift in the cutting position. Therefore, two cutting blades 6 with different cutting depths into the sheet body 1 are provided. The cutting blade 6 at the higher position at the bottom cuts into the sheet material 1 to a depth of one-third to one-half the thickness of the sheet material 1, thereby reducing the amount of cutting required for the sheet material 1. The cutting blade 6 at the lower position at the bottom cuts into the sheet material 1 to a depth greater than the thickness of the sheet material 1, thereby completely cutting the sheet material 1. The two cutting blades 6 trimming and cutting in coordination greatly reduce the cutting force, preventing the sheet material 1 from yielding and causing the cutting position to shift.
[0024] Figure 1 In the example, the angle α between the bottom lines of the two cutting blades 6 and the horizontal line is set to 1°-3°. The angle α affects the cutting depth of the right cutting blade 6, thereby adjusting the force applied by the cutting blade 6 when it first cuts into the sheet material 1, and improving applicability. The angle α can be adjusted by replacing the spacer 23 with spacers 23 of different bottom inclinations.
[0025] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, certain improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.
Claims
1. A trimming device, characterized in that: The invention comprises a fixing block (2) and a base (10), wherein the fixing block (2) is provided with a shaft (5), wherein the shaft (5) can rotate along its own axis, wherein two shafts (5) are provided, wherein the shaft (5) is provided with a cutting blade (6), wherein the cutting blade (6) is located above the base (10), wherein a groove (101) is provided at the upper end of the base (10), wherein the cutting blade (6) and the groove (101) are arranged opposite to each other in the upper and lower directions, wherein the cutting blade (6) is used for cutting a plate body (1), wherein the plate body (1) is transported horizontally along the upper end of the base (10) and is passed through the groove (101). The fixing block (2) is located on both sides of the plate body (1) in the transmission direction through the two cutting blades (6), and the projection of the center line of the two cutting blades (6) on the plate body (1) is along the transmission direction of the plate body (1). The bottom position of one of the cutting blades (6) is higher than the bottom position of the other cutting blade (6). The cutting blade (6) with the higher bottom position is located at one end of the plate body (1) entering the two cutting blades (6), and the cutting blade (6) with the lower bottom position is located at one end of the plate body (1) leaving the two cutting blades (6).
2. A trimming device according to claim 1, characterized in that: A pad (23) is installed on the upper end of the fixing block (2), the lower end surface of the pad (23) is in contact with the upper end surface of the fixing block (2), and the lower end surface of the pad (23) gradually tilts downward along the transmission direction of the plate body (1).
3. The trimming device according to claim 1, characterized in that: The fixing block (2) is installed with a bushing (21), the shaft (5) passes through the bushing (21) and the two are connected by a bearing (22), and the fixing block (2) is also installed with a motor (3), and the output end of the motor (3) is connected to the shaft (5) through a gear pair (4), so that the motor (3) drives the shaft (5) to rotate.
4. The trimming device according to claim 1, characterized in that: The shaft (5) passes through the cutting blade (6); the shaft (5) is covered with an adjustment ring (8); the adjustment ring (8) abuts against one end face of the cutting blade (6); the end of the shaft (5) is covered with a cover sleeve (9); the cover sleeve (9) presses against the other end face of the cutting blade (6).
5. The trimming device according to claim 4, characterized in that: The shaft (5) is provided with a convex ring (51), the convex ring (51) is located on a side of the adjustment ring (8) away from the cutting blade (6), and the convex ring (51) is installed with an adjustment component (7), and the adjustment component (7) passes through the convex ring (51) and abuts against the adjustment ring (8).
6. The trimming device according to claim 5, characterized in that: The adjusting component (7) is a screw, and the adjusting component (7) is threadedly connected to the convex ring (51).
7. The trimming device according to claim 1, characterized in that: The cutting blade (6) with a higher bottom position cuts into the plate body (1) to a depth of one third to one half of the thickness of the plate body (1).
8. The trimming device according to claim 1, characterized in that: The cutting blade (6) at a lower bottom position cuts into the plate body (1) to a depth greater than the thickness of the plate body (1).