Trimming device

Abstract

The utility model discloses a trimming device which comprises a vertical frame and a lower trimming assembly, the lower trimming assembly is provided with a lifting plate, and the lifting plate is arranged on the vertical frame in a sliding mode. The lower trimming floating assembly comprises a position adjusting screw rod, a supporting seat, a floating seat, a connecting rod and a compression spring, the lower portion of the position adjusting screw rod is rotationally connected with the vertical frame, the upper portion of the position adjusting screw rod is in threaded connection with the supporting seat, the floating seat is arranged above the supporting seat, the upper end of the compression spring is connected with the floating seat, and the lower end of the compression spring is connected with the supporting seat; the connecting rod penetrates through the supporting base and the floating base in a matched mode, limiting parts are arranged at the upper end and the lower end of the connecting rod respectively, the supporting base and the floating base are arranged between the upper limiting part and the lower limiting part, a supporting base top face is formed on the supporting base, a floating base bottom face is formed on the floating base, a floating gap is formed between the supporting base top face and the floating base bottom face, and the floating base is connected with the lifting plate. The trimming device disclosed by the utility model is beneficial to improving the quality of plate products.

Description

Technical Field

[0001] This utility model relates to the field of edge trimming devices for edge banding machines, and specifically to an edge trimming device. Background Technology

[0002] Currently, edge banding machines are used to bond plastic edge strips to the sides of sheet materials. These machines also include several trimming devices for smoothing the top and bottom edges of the edge strips and for rounding the corners. To ensure accurate trimming, a positioning plate is placed against the top or bottom of the sheet material at the trimming cutter position to limit the cutting depth. However, since sheet thickness is inevitably uneven and slight wavy deformation may occur, existing trimming devices are designed to float vertically. Compression springs support the cutter head and positioning plate of the trimming device. For example, when a convex portion of the sheet material passes the positioning plate located at the lower position, the convex portion of the sheet material pushes the positioning plate downwards, causing the cutter head to float downwards, thus preventing excessive cutting depth. The existing floating structure, while simple, lacks limitations on the floating amplitude, preventing the cutter head and positioning plate from floating up and down within the elastic range of the spring. Under normal circumstances, the existing structure operates relatively smoothly. However, when encountering steep protrusions in the sheet metal, the impact force of the sheet metal on the positioning plate is significant, causing the positioning plate to float with a large acceleration. Due to inertia, the positioning plate leaves the sheet metal for an extended period, causing the cutter head to leave the cutting position, resulting in a skipping phenomenon. This also leads to occasional large elastic deformation of the spring. Subsequently, the elastic force of the spring pushes the cutter head back towards the sheet metal rapidly, resulting in a sudden increase in cutting depth and causing notches to appear on the edge strip. Therefore, the existing trimming device is not conducive to improving the quality of sheet metal products and needs to be improved. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a trimming device that helps improve the quality of sheet metal products.

[0004] The objective of this utility model is achieved through the following technical solution.

[0005] The trimming device disclosed in this utility model includes a stand and a lower trimming assembly. The lower trimming assembly is provided with a lifting plate, which is slidably mounted on the stand. It also includes a lower trimming floating assembly, which includes an adjusting screw, a support base, a floating seat, a connecting rod, and a compression spring. The axis of the adjusting screw extends vertically, and its lower part is rotatably connected to the stand. The upper part of the adjusting screw is screwed to the support base. The floating seat is located above the support base. The upper end of the compression spring is connected to the floating seat, and its lower end is connected to the support base. The connecting rod is adapted to pass through the support base and the floating seat. Limiting portions are provided at both the upper and lower ends of the connecting rod. The support base and the floating seat are located between the two limiting portions. The support base has a top surface, and the floating seat has a bottom surface. A floating gap is formed between the top surface of the support base and the bottom surface of the floating seat. The floating seat is installed and connected to the lifting plate.

[0006] Preferably, the upper part of the support seat has a lower recess, the lower part of the floating seat has an upper recess, the lower part of the compression spring is located in the lower recess, the upper part of the compression spring is located in the upper recess, and the connecting rod passes through the compression spring.

[0007] Preferably, the number of compression springs is two, and the adjusting screw is located between the two compression springs.

[0008] Preferably, a groove is formed on one side of the lifting plate, and one end of the floating seat is adapted to fit inside the groove.

[0009] Preferably, the support frame includes a base plate, columns, and a top plate. There are two columns. The lower end of each column is fixedly connected to the base plate, and the upper end of each column is fixedly connected to the top plate. The lifting plate is connected to the columns via a linear guide pair, and the lower trimming floating assembly is located between the two columns.

[0010] Compared with the prior art, the advantages of this utility model are as follows: by setting the lower part of the adjusting screw to rotate and connect the upright, the upper part of the adjusting screw to the support seat, the floating seat is set above the support seat, the upper end of the compression spring is connected to the floating seat, the lower end of the compression spring is connected to the support seat, the connecting rod adapts to pass through the support seat and the floating seat, and the upper and lower ends of the connecting rod are respectively provided with limiting parts. The support seat and the floating seat are set between the upper and lower limiting parts, and a floating gap is formed between the top surface of the support seat and the bottom surface of the floating seat. The floating seat is installed and connected to the lifting plate, which can avoid the phenomenon of knife jumping and the cutting of notches on the edge strip, thereby helping to improve the quality of the board product. Attached Figure Description

[0011] Figure 1This is a three-dimensional structural diagram of the trimming device of this utility model.

[0012] Figure 2 This is an exploded view of the trimming device of this utility model.

[0013] Figure 3 This is a three-dimensional structural diagram of the lower trimming component of this utility model.

[0014] Figure 4 This is a cross-sectional structural diagram of the combination of the upright frame, the lower trimming floating component, and the upper trimming floating component of this utility model.

[0015] Figure 5 for Figure 4 A partial structural diagram.

[0016] Figure 6 This is a top view of the combined structure of the lower trimming floating component, lifting plate, and upright frame of this utility model.

[0017] Labeling Explanation: Frame 1; Base Plate 11; Column 12; Top Plate 13; Through Slot 10; Horizontal Plate 14; Clamping Block 15; Lower Trimming Assembly 2; Lifting Plate 21; Groove 211; Linear Guide Rail Pair 22; Trimming Cutter Disc 201; Vertical Positioning Disc 202; Upper Trimming Assembly 3; Lower Trimming Floating Assembly 4; Adjusting Screw 41; Adjusting Nut 411; Support Seat 42; Lower Recess 421; Support Seat Top Surface 4201; Floating Seat 43; Upper Recess 431; Floating Seat Bottom Surface 4301; Connecting Rod 44; Limiting Head 441; Limiting Nut 442; Compression Spring 45; Floating Gap 400; Upper Trimming Floating Assembly 5. Detailed Implementation

[0018] The present invention will now be further described with reference to the accompanying drawings.

[0019] The trimming device of this utility model, such as Figure 1 and Figure 2 As shown, it includes a support frame 1 and a lower trimming assembly 2, such as Figure 3 As shown, the lower trimming assembly 2 is equipped with a lifting plate 21, which is slidably mounted on the upright frame 1. The lower trimming assembly 2 is equipped with a trimming cutter head 201 and a vertical positioning plate 202. The trimming cutter head 201 is mounted on the output shaft of the trimming motor, the trimming motor is mounted on the lifting plate 21, and the vertical positioning plate 202 is mounted on the lifting plate 21. Figure 1 and Figure 4 As shown, the trimming device of this utility model also includes a lower trimming floating assembly 4, which includes an adjusting screw 41, a support base 42, a floating base 43, a connecting rod 44, and a compression spring 45. Figure 4 and Figure 5As shown, the axis of the adjusting screw 41 extends vertically. The lower part of the adjusting screw 41 is rotatably connected to the support frame 1. Specifically, the lower part of the support frame 1 is provided with a horizontal plate 14. The lower end of the adjusting screw 41 passes through the horizontal plate 14. A flanged copper sleeve is provided between the lower end of the adjusting screw 41 and the horizontal plate 14. The lower part of the adjusting screw 41 forms a collar portion, which abuts against the upper side of the flanged copper sleeve. Figure 2 and Figure 4 As shown, the support frame 1 is equipped with a clamping block 15, which is located on the upper side of the aforementioned collar portion. The clamping block 15 is used to clamp and fix the adjusting screw 41. Figure 4 and Figure 5 As shown, the upper part of the adjusting screw 41 is screwed to the support seat 42. Specifically, the support seat 42 is fitted with an adjusting nut 411 by a corresponding screw, and the adjusting screw 41 is screwed to the adjusting nut 411. The floating seat 43 is located above the support seat 42. The upper end of the compression spring 45 is connected to the floating seat 43, and the lower end of the compression spring 45 is connected to the support seat 42. The connecting rod 44 is adapted to pass through the support seat 42 and the floating seat 43. Specifically, copper bushings are provided between the connecting rod 44 and the support seat 42, and between the connecting rod 44 and the floating seat 43, which helps to reduce the sliding friction between the connecting rod 44 and the support seat 42 and the floating seat 43. The upper and lower ends of the connecting rod 44 are respectively provided with limiting parts, and the support seat 42 and the floating seat 43 are located between the upper and lower limiting parts. For example... The lower end of the connecting rod 44 forms a limiting head 441, and the upper end of the connecting rod 44 is screwed with two mutually abutting limiting nuts 442. Thus, the limiting part located at the lower position is the limiting head 441, and the limiting part located at the upper position is the limiting nut 442. The support seat 42 has a support seat top surface 4201, and the floating seat 43 has a floating seat bottom surface 4301. A floating gap 400 is formed between the support seat top surface 4201 and the floating seat bottom surface 4301. During this period, the compression spring 45 remains in an elastic compressed state, so that the elastic restoring force of the compression spring 45 can support the lower trimming assembly 2, causing the lower part of the support seat 42 to abut the limiting head 441, and the upper part of the floating seat 43 to abut the corresponding limiting nut 442. Figure 6 As shown, the floating seat 43 and the lifting plate 21 are connected by corresponding screws. When it is necessary to adjust the height position of the trimming assembly 2 in its free state, the clamping block 15 is loosened. The above-mentioned collar part can form a hexagonal edge. By rotating the above-mentioned collar part, the adjusting screw 41 can be rotated, which can drive the support seat 42 to move up and down for adjustment.

[0020] exist Figure 1From the visual direction, the sheet material is moved from left to right on the front side of the stand 1. The sheet material slides over the vertical positioning plate 202 of the lower trimming assembly 2 and under the positioning plate of the upper trimming floating assembly 5. For example, when the bottom of the sheet material contacts the outer cylindrical surface of the vertical positioning plate 202, it slightly pushes the vertical positioning plate 202 downwards. Consequently, the lifting plate 21 moves downwards slightly, causing the floating seat 43 to move downwards slightly. Correspondingly, the compression spring 45 further undergoes slight elastic compression deformation. When the sheet material exhibits wavy deformation, the vertical positioning plate 202 can remain against the bottom of the sheet material through the elastic restoring force of the compression spring 45. Correspondingly, the floating seat 43 floats up and down slightly, i.e., the floating gap 400 changes accordingly, thus keeping the cutting depth of the trimming cutter head 201 approximately constant. When the sheet material has a relatively steep local downward convex deformation... The floating seat 43 moves downward at a relatively fast speed, and the bottom surface 4301 of the floating seat contacts the top surface 4201 of the support seat (i.e., the floating gap 400 is zero at this time). Thus, the top surface 4201 of the support seat blocks and limits the floating seat 43, preventing the trimming cutter head 201 from leaving the edge strip of the board due to inertia. That is to say, the cutting depth of the trimming cutter head 201 can be reduced only briefly. Then, the elastic restoring force of the compression spring 45 causes the vertical positioning plate 202 to quickly return to its position against the bottom of the board, and the trimming cutter head 201 returns to its normal cutting depth, thus avoiding the phenomenon of tool skipping. When the lower convex part of the board passes the vertical positioning plate 202, when the floating seat 43 moves upward to reset, the upward movement of the trimming cutter head 201 is limited because the aforementioned limiting part restricts the width of the floating gap 400 (in the vertical direction). This also avoids cutting notches on the edge strip of the board, thereby improving the quality of the board product. In some special cases, the local downward deformation of the plate is relatively large. When the bottom surface 4301 of the floating seat is in rigid contact with the top surface 4201 of the support seat, the vertical positioning plate 202 is also in contact with the downward convex part of the plate. At this time, the vertical positioning plate 202 can slightly lift the plate, causing the plate to undergo slight elastic deformation.

[0021] Furthermore, such as Figure 5 As shown, the upper part of the support base 42 has a lower recess 421, and the lower part of the floating base 43 has an upper recess 431. The lower part of the compression spring 45 is located in the lower recess 421, and the upper part of the compression spring 45 is located in the upper recess 431. The connecting rod 44 passes through the compression spring 45. In other words, the connecting rod 44 also passes through the upper recess 431 and the lower recess 421. Specifically, the upper end of the compression spring 45 is attached to the top of the upper recess 431, and the lower end of the compression spring 45 is attached to the bottom of the lower recess 421. By setting the upper recess 431 and the lower recess 421, the space for accommodating the compression spring 45 is increased. Correspondingly, the size of the floating gap 400 in the vertical direction can be set to be smaller.

[0022] Furthermore, such as Figure 5As shown, there are two compression springs 45, and the adjusting screw 41 is located between the two compression springs 45, which is conducive to the force balance of the floating seat 43. Correspondingly, there are two connecting rods 44, which guide the relative up and down floating of the floating seat 43 and the support seat 42.

[0023] Furthermore, such as Figure 3 As shown, a groove 211 is formed on one side of the lifting plate 21, such as... Figure 6 As shown, one end of the floating seat 43 is fitted vertically into the groove 211. In other words, the width of the groove 211 (in the vertical direction) is equal to the thickness of one end of the floating seat 43 (in the vertical direction), thereby increasing the mutual positioning strength between the lifting plate 21 and the floating seat 43. A screw is used to pass horizontally through the floating seat 43 and screw it to the bottom of the groove 211.

[0024] Furthermore, such as Figure 2 and Figure 4 As shown, the support frame 1 includes a base plate 11, uprights 12, and a top plate 13. There are two uprights 12, arranged front and back. The uprights 12 can be made of rectangular steel tubing. The lower end of each upright 12 is fixedly connected (or welded) to the base plate 11, and the upper end of each upright 12 is fixedly connected to the top plate 13. The lifting plate 21 is connected to the uprights 12 via a linear guide pair 22. Figure 3 As shown, the slider of the linear guide pair 22 is mounted on the lifting plate 21, as... Figure 6 As shown, the linear guide pair 22 is mounted on the column 12. Therefore, through the guiding action of the linear guide pair 22, the lifting plate 21 can move up and down with high rigidity. Figure 4 and Figure 6 As shown, the lower trimming floating component 4 is positioned between the two columns 12. Specifically, a through groove 10 is formed between the two columns 12, and the lower trimming floating component 4 is located within the through groove 10. Therefore, the layout is reasonable. Figure 6 As shown, this allows the column 12 and the lifting plate 21 to be installed closer together, making the trimming device structure more compact.

[0025] like Figure 1 , Figure 2 and Figure 4 As shown, the trimming device of this utility model also includes an upper trimming component 3 and an upper trimming floating component 5. The upper trimming component 3 is used to process the upper edge of the edge strip of the board. The structural principle of the upper trimming component 3 is the same as that of the lower trimming component 2. The lower trimming component 2 and the upper trimming component 3 are located on the left and right sides of the stand 1, respectively. The floating structure principle of the upper trimming floating component 5 is the same as that of the lower trimming floating component 4. The upper part of the adjusting screw of the upper trimming floating component 5 is rotatably connected to the top plate 13. The adjusting screw of the upper trimming floating component 5 is driven by a servo motor. When the thickness specification of the board changes, the servo motor can drive the upper trimming component 3 to adjust up and down.

Claims

1. A trimming device, comprising a stand (1) and a lower trimming assembly (2), wherein the lower trimming assembly (2) is provided with a lifting plate (21), the lifting plate (21) being slidably disposed on the stand (1), characterized in that: It also includes a lower trimming floating assembly (4), which includes an adjusting screw (41), a support base (42), a floating seat (43), a connecting rod (44), and a compression spring (45). The axis of the adjusting screw (41) extends in the vertical direction. The lower part of the adjusting screw (41) is rotatably connected to the upright (1), and the upper part of the adjusting screw (41) is screwed to the support base (42). The floating seat (43) is located above the support base (42). The upper end of the compression spring (45) is connected to the floating seat (43), and the lower end of the compression spring (45) is connected to the support base (42). The support base (42) is adapted to pass through the support base (42) and the floating seat (43). The upper and lower ends of the connecting rod (44) are respectively provided with limiting parts. The support base (42) and the floating seat (43) are located between the upper and lower limiting parts. The support base (42) forms a support base top surface (4201). The floating seat (43) forms a floating seat bottom surface (4301). A floating gap (400) is formed between the support base top surface (4201) and the floating seat bottom surface (4301). The floating seat (43) is installed and connected to the lifting plate (21).

2. The trimming device according to claim 1, characterized in that: The upper part of the support base (42) has a lower recess (421), the lower part of the floating base (43) has an upper recess (431), the lower part of the compression spring (45) is located in the lower recess (421), the upper part of the compression spring (45) is located in the upper recess (431), and the connecting rod (44) passes through the compression spring (45).

3. The trimming device according to claim 2, characterized in that: The number of compression springs (45) is set to two, and the adjusting screw (41) is located between the two compression springs (45).

4. The trimming device according to claim 1, characterized in that: A groove (211) is formed on one side of the lifting plate (21), and one end of the floating seat (43) is adapted to be disposed in the groove (211).

5. The trimming device according to claim 1, characterized in that: The support frame (1) includes a base plate (11), columns (12) and a top plate (13). There are two columns (12). The lower end of the column (12) is fixedly connected to the base plate (11), and the upper end of the column (12) is fixedly connected to the top plate (13). The lifting plate (21) is connected to the column (12) through a linear guide pair (22). The lower trimming floating component (4) is located between the two columns (12).

Images