A PVC board drilling and positioning device

Abstract

This utility model discloses a PVC board drilling and positioning device, including a base plate, a support frame fixedly connected to the top of the base plate, a drilling assembly disposed above the support frame, and a straightening mechanism disposed on the side of the support frame; a fixing mechanism disposed on the side of the drilling assembly; and an adjusting mechanism disposed at the bottom of the support frame. The straightening mechanism straightens the PVC board to be processed. This utility model relates to the field of PVC board processing technology. This PVC board drilling and positioning device, through the cooperation of a first straightening roller, a first fixing plate, a first servo motor, a fixing frame, a second straightening roller, an electric push rod, and a second fixing plate, achieves the straightening of the PVC board to be processed before drilling and positioning, avoiding slight warping of the board due to long-term storage or processing, thereby preventing large deviations between the actual drilling coordinates and the set drilling coordinates, ensuring positioning accuracy, and thus improving drilling accuracy.

Description

Technical Field

[0001] This utility model relates to the field of PVC sheet processing technology, specifically to a PVC sheet drilling and positioning device. Background Technology

[0002] PVC sheets, or polyvinyl chloride sheets, are plastic sheets made from polyvinyl chloride resin as the main raw material, with the addition of stabilizers, plasticizers, fillers, colorants and other auxiliary materials, and processed through extrusion, calendering, molding and other processes.

[0003] In traditional PVC board drilling and positioning equipment, the operator fixes the PVC board to be processed onto the processing table of the drilling and positioning equipment and performs drilling operations on the PVC board.

[0004] However, in actual processing, PVC sheets may be slightly warped due to long-term storage or processing. When positioning, warped PVC sheets may not be able to fully fit with the positioning reference surface of the processing table. If only traditional rigid clamps are used for clamping, either the clamping force is concentrated on the protruding part, causing further deformation of the sheet, or the suspended area cannot bear the force, resulting in a slight offset after the sheet is positioned. This leads to a large deviation between the actual drilling coordinates and the set drilling coordinates, seriously affecting the drilling accuracy, and even causing the entire PVC sheet to be scrapped. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this utility model provides a PVC board drilling and positioning device. This device solves the problem that during actual processing, PVC boards may exhibit slight warping due to long-term storage or processing. When positioning, warped PVC boards may not fully align with the positioning reference surface of the processing table. If only traditional rigid clamps are used for clamping, either the clamping force is concentrated on the protruding parts, causing further deformation of the board, or the suspended areas cannot bear force, resulting in slight offset after positioning. This leads to a significant deviation between the actual drilling coordinates and the set drilling coordinates, severely affecting drilling accuracy and even rendering the entire PVC board unusable.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a PVC board drilling and positioning device, comprising a base plate, a support frame fixedly connected to the top of the base plate, a drilling assembly disposed above the support frame, and a correction mechanism disposed on the side of the support frame; a fixing mechanism disposed on the side of the drilling assembly; and an adjustment mechanism disposed at the bottom of the support frame; wherein, the correction mechanism corrects the PVC board to be processed, the fixing mechanism fixes the corrected PVC board, and the adjustment mechanism fine-tunes the fixed PVC board.

[0007] Preferably, the straightening mechanism includes two first straightening rollers, each disposed on the side of the support frame; two first fixing plates, each rotatably connected to the two ends of the first straightening rollers via sealed bearings; a first servo motor fixedly connected to the outer wall of one of the first fixing plates, with its output end fixedly connected to the end of one of the first straightening rollers; a fixing frame disposed above the first straightening rollers; a second straightening roller rotatably connected to the bottom of the fixing frame via sealed bearings; an electric push rod fixedly connected to the top of the fixing frame; and a second fixing plate fixedly connected to the top of the electric push rod. The PVC sheet to be processed is straightened through the cooperation of the first straightening rollers, the first fixing plates, the first servo motor, the fixing frame, the second straightening rollers, the electric push rod, and the second fixing plates.

[0008] Preferably, the fixing mechanism includes two protective covers, each disposed on one side of the outer wall of the drilling assembly; two damping pads, each fixedly connected to the bottom of the two protective covers; two connecting rods, each fixedly connected to the top of the two protective covers; two springs, each sleeved on the outer wall of the two connecting rods; and two connecting blocks, each sleeved on the outer wall of the two connecting rods, with the bottom of the two connecting blocks respectively abutting the top of the two springs. The PVC sheet is fixed by the cooperation of the protective covers, damping pads, connecting rods, springs, and connecting blocks.

[0009] Preferably, the adjustment mechanism includes a double-ended screw, which is disposed between the support frame and the base plate; two fixed seats, each rotatably connected to both ends of the double-ended screw via sealed bearings, with the tops of the two fixed seats fixedly connected to the bottom sides of the support frame; a second servo motor fixedly connected to the outer wall of one of the fixed seats, with its output end fixedly connected to the end of the double-ended screw; two drive seats, each threadedly connected to both sides of the outer wall of the double-ended screw, with the outer walls of the two drive seats slidably connected to the inner walls of two connecting grooves and extending to the top of the support frame; and two adjustment plates, each fixedly connected to one side of the outer wall of the two drive seats that are close to each other. The double-ended screw, fixed seats, second servo motor, drive seats, and adjustment plates work together to fine-tune the fixed PVC sheet.

[0010] Preferably, laser emitters are fixedly connected to both sides of the outer wall of the drilling assembly, a connecting plate is fixedly connected to the top of the drilling assembly, the outer walls of the connecting plate are respectively fixedly connected to the sides of the outer walls of the two connecting blocks that are close to each other, an electric telescopic rod is fixedly connected to the top of the connecting plate, a support plate is fixedly connected to the top of the electric telescopic rod, and the outer wall of the support plate is fixedly connected to the side of the outer wall of the support frame away from the first straightening roller.

[0011] Preferably, support rods are fixedly connected to both sides of the outer wall of the two first fixing plates, and the outer walls of the four support rods are respectively fixedly connected to both sides of the outer wall of the second fixing plate.

[0012] Preferably, limit rods are provided on both sides of the outer wall of the electric push rod, and the outer walls of the two limit rods penetrate through the outer wall of the second fixed plate and extend to the top of the second fixed plate. Beneficial effects

[0013] This utility model provides a PVC board drilling and positioning device. It has the following advantages: This PVC board drilling and positioning device, through the cooperation of a first straightening roller, a first fixed plate, a first servo motor, a fixed frame, a second straightening roller, an electric push rod, and a second fixed plate, achieves the straightening of the PVC board to be processed before drilling and positioning. This avoids slight warping of the board due to long-term storage or processing, thereby preventing large deviations between the actual drilling coordinates and the set drilling coordinates, ensuring positioning accuracy, and thus improving drilling accuracy.

[0014] By using a combination of a protective cover, damping pad, connecting rod, spring, and connecting block, the PVC sheet to be processed after correction is fixed, and the position of the PVC sheet to be processed is finely adjusted by an adjustment mechanism to ensure that the hole position matches the preset coordinate height during drilling, thereby improving the drilling success rate. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the appearance of the present utility model; Figure 2 for Figure 1 A structural schematic diagram of the laser emitter, the electric telescopic pole, and the support plate. Figure 3 for Figure 1 A structural diagram of the central protective cover, damping pad, and connecting rod; Figure 4 for Figure 1 A schematic diagram of the structure of the double-ended screw, the fixed base, and the second servo motor.

[0016] In the diagram: 1. Base plate; 11. Support frame; 12. Connecting groove; 2. Drilling assembly; 21. Laser emitter; 22. Connecting plate; 23. Electric telescopic rod; 24. Support plate; 3. Correction mechanism; 31. First correction roller; 32. First fixing plate; 321. Support rod; 33. First servo motor; 34. Fixing frame; 341. Limiting rod; 35. Second correction roller; 36. Electric push rod; 37. Second fixing plate; 4. Fixing mechanism; 41. Protective cover; 42. Damping pad; 43. Connecting rod; 44. Spring; 45. Connecting block; 5. Adjustment mechanism; 51. Double-ended screw; 52. Fixing seat; 53. Second servo motor; 54. Drive seat; 55. Adjustment plate. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] In actual processing, PVC sheets may be slightly warped due to long-term storage or processing. When positioning, warped PVC sheets may not be able to fully fit with the positioning reference surface of the processing table. If only traditional rigid clamps are used for clamping, the clamping force will be concentrated on the protruding parts, causing further deformation of the sheet, or the suspended area will not be able to bear the force, resulting in a slight offset after the sheet is positioned. This will cause a large deviation between the actual drilling coordinates and the set drilling coordinates, seriously affecting the drilling accuracy, and even causing the entire PVC sheet to be scrapped.

[0019] In view of this, the present invention provides a PVC board drilling and positioning device. This PVC board drilling and positioning device, through the cooperation of a first straightening roller, a first fixed plate, a first servo motor, a fixed frame, a second straightening roller, an electric push rod, and a second fixed plate, realizes the straightening of the PVC board to be processed before drilling and positioning, avoids the slight warping of the board caused by long-term storage or processing, thereby preventing a large deviation between the actual drilling coordinates and the set drilling coordinates, ensuring positioning accuracy, and thus improving drilling accuracy.

[0020] Those skilled in the art can connect the components in this case sequentially. The specific connection and operation sequence should refer to the working principle described below. The detailed connection methods are well-known technologies in the field. The working principle and process are mainly described below.

[0021] Example 1: By Figure 1-4 It is known that a PVC board drilling and positioning device includes a base plate 1, a support frame 11 fixedly connected to the top of the base plate 1, a drilling assembly 2 disposed above the support frame 11, and the PVC board drilling and positioning device also includes a straightening mechanism 3, a fixing mechanism 4, and an adjusting mechanism 5. The straightening mechanism 3 is disposed on the side of the support frame 11; the fixing mechanism 4 is disposed on the side of the drilling assembly 2; and the adjusting mechanism 5 is disposed at the bottom of the support frame 11. The straightening mechanism 3 straightens the PVC board to be processed, the fixing mechanism 4 fixes the straightened PVC board, and the adjusting mechanism 5 finely adjusts the fixed PVC board. In the specific implementation process, it is worth noting that the base plate 1 is a rectangular plate, and its material can be alloy steel. Support feet are installed at the four corners of its bottom. The support frame 11 is made of the same material as the base plate 1, and its overall shape is similar to that of the base plate 1. The drilling assembly 2 includes a drilling motor (MSMD082G1U model), a drill chuck (ER11 / ER16 type elastic chuck), and a drill bit (carbide drill bit). In actual work, the operator connects the external power supply of the drilling motor of the drilling assembly 2 through an external controller and starts the drilling motor. The drilling motor drives the drill chuck to rotate, and the drilling motor drives the drill bit to rotate, thereby performing drilling operations on the PVC board. The operator uses the straightening mechanism 3 to straighten the PVC board to be processed to avoid slight warping caused by long-term storage or processing. The straightened PVC board is fixed by the fixing mechanism 4 and, in conjunction with the adjustment mechanism 5, the fixed PVC board is finely adjusted. Furthermore, the straightening mechanism 3 includes a first straightening roller 31, a first fixing plate 32, a first servo motor 33, a fixing frame 34, a second straightening roller 35, an electric push rod 36, and a second fixing plate 37. Two first straightening rollers 31 are provided, both located on the side of the support frame 11. Two first fixing plates 32 are provided, rotatably connected to the two ends of the two first straightening rollers 31 respectively via sealed bearings. The first servo motor 33 is fixedly connected to the outer wall of one of the first fixing plates 32, and its output end is fixedly connected to one of the first straightening rollers 35. The first straightening roller 31 is located at its end; a fixed frame 34 is positioned above the first straightening roller 31; a second straightening roller 35 is rotatably connected to the bottom of the fixed frame 34 via a sealed bearing; an electric push rod 36 is fixedly connected to the top of the fixed frame 34; and a second fixed plate 37 is fixedly connected to the top of the electric push rod 36. The PVC sheet to be processed is straightened through the cooperation of the first straightening roller 31, the first fixed plate 32, the first servo motor 33, the fixed frame 34, the second straightening roller 35, the electric push rod 36, and the second fixed plate 37. In the specific implementation process, it is worth noting that there are two first straightening rollers 31, which can be made of alloy steel. The one closer to the support frame 11 is the driven roller, and the one farther from the support frame 11 is the driving roller. There are two first fixing plates 32, which are made of stainless steel. Each plate has two circular through holes on its surface, and sealed bearings are installed inside the through holes. The inner walls of the sealed bearings are fixedly connected to the outer walls of the first straightening rollers 31. The model of the first servo motor 33 can be selected according to actual needs, as long as it meets the working requirements. For example, it can be the MR-J4-70A model. The fixing frame 34 is generally 'n'-shaped, and its material is the same as that of the first fixing plate 32. Circular through holes are opened on both sides of its bottom, and sealed bearings are installed inside the through holes. The second straightening roller 35 is the driven roller, which is made of the same material as the first straightening roller 31, but its diameter is larger than that of the first straightening roller 31. The model of the electric push rod 36 can be selected according to actual needs, as long as it meets the working requirements. For example, it can be the TOLOMATIC-ES16 model. In actual operation, when When it is necessary to correct warped PVC sheets, the operator connects the external power supply of the first servo motor 33 and the electric push rod 36 through the external controller, and starts the first servo motor 33 and the electric push rod 36 at the same time. The electric push rod 36 drives the fixed frame 34 to move downward, and the fixed frame 34 drives the second straightening roller 35 to move downward. The second straightening roller 35 moves to the position set in advance by the external controller. At the same time, the first servo motor 33 drives one of the first straightening rollers 31 to rotate. After all are started, the operator takes the PVC sheet to be processed and inserts one side of it between the first straightening roller 31 and the second straightening roller 35. The first straightening roller 31 drives the PVC sheet to move, and the second straightening roller 35 corrects the warped position of the PVC sheet. The corrected PVC sheet is directly moved to the top of the support frame 11 for the next operation, thereby preventing a large deviation between the actual drilling coordinates and the set drilling coordinates, ensuring positioning accuracy, and thus improving the drilling accuracy of the PVC sheet drilling positioning equipment. Furthermore, the fixing mechanism 4 includes a protective cover 41, a damping pad 42, a connecting rod 43, a spring 44, and a connecting block 45. Two protective covers 41 are provided, respectively located on both sides of the outer wall of the drilling assembly 2; two damping pads 42 are provided, respectively fixedly connected to the bottom of the two protective covers 41; two connecting rods 43 are provided, respectively fixedly connected to the top of the two protective covers 41; two springs 44 are provided, respectively sleeved on the outer wall of the two connecting rods 43; and two connecting blocks 45 are provided, respectively sleeved on the outer wall of the two connecting rods 43, with the bottom of the two connecting blocks 45 respectively abutting the top of the two springs 44. The protective cover 41, damping pad 42, connecting rod 43, spring 44, and connecting block 45 work together to fix the corrected PVC sheet. In the specific implementation process, it is worth noting that the protective cover 41 has a cross-section similar to a 'C' shape, and two protective covers 41 can form a tubular structure to enclose the drilling assembly 2. The material of the protective cover 41 can be transparent ABS plastic. Two damping pads 42 are provided, with a 'C' shape, and their material can be nitrile rubber. They directly contact the PVC board, providing anti-slip and cushioning functions. Two connecting rods 43 are provided, with a cross-section similar to an 'I' shape, and their material is stainless steel. Two springs 44 are provided, and their material can be spring steel. Their elastic coefficient can be selected according to actual needs to meet the working requirements. Two connecting blocks 45 are provided, with the same material as the connecting rods 43. Their surfaces have circular through holes. In actual work, when it is necessary to process the PVC board... When the board is fixed, the operator moves the connecting block 45 downward through the drilling assembly 2. The two connecting blocks 45 move the two connecting rods 43, the two connecting rods 43 move the two protective covers 41 downward, and the two protective covers 41 move the two damping pads 42 downward until the bottom of the damping pads 42 contacts the PVC board to be processed. The drilling assembly 2 continues to move. At this time, the spring 44 is compressed. The reaction force of the spring 44 is transmitted to the PVC board to fix it. At this time, the PVC board is fixed on the top of the support frame 11, but not completely fixed. The clamping force of the fixing mechanism 4 is small, and the PVC board can still be pushed. The fixing mechanism 4, together with the subsequent adjustment mechanism 5, makes fine adjustments to the PVC board to be processed, thereby improving the positioning accuracy of the PVC board drilling and positioning equipment. Example 2: From Figure 1-4 It is known that the adjustment mechanism 5 includes a double-ended screw 51, a fixed base 52, a second servo motor 53, a drive base 54, and an adjustment plate 55. The double-ended screw 51 is disposed between the support frame 11 and the base plate 1. Two fixed bases 52 are provided, which are rotatably connected to the two ends of the double-ended screw 51 through sealed bearings, and the tops of the two fixed bases 52 are respectively fixedly connected to the bottom sides of the support frame 11. The second servo motor 53 is fixedly connected to the outer wall of one fixed base 52, and its output end is fixedly connected to the end of the double-ended screw 51. Two drive bases 54 are provided, which are threadedly connected to the two sides of the outer wall of the double-ended screw 51, and the outer walls of the two drive bases 54 are respectively slidably connected to the inner walls of the two connecting grooves 12 and extend to the top of the support frame 11. Two adjustment plates 55 are provided, which are respectively fixedly connected to the sides of the outer walls of the two drive bases 54 that are close to each other. The double-ended screw 51, the fixed base 52, the second servo motor 53, the drive base 54, and the adjustment plate 55 are used to finely adjust the fixed PVC sheet. In the specific implementation process, it is worth noting that the double-ended screw 51 can be made of 45# steel. Two fixing seats 52 are provided, made of the same material as the double-ended screw 51, with circular through holes machined into their inner walls. Sealed bearings are installed in these through holes. The model of the second servo motor 53 can be selected according to actual needs, as long as it meets the operational requirements; for example, the MSMD042G1U model can be selected. Two drive seats 54 are provided, with a cross-section resembling an "I" shape, made of the same material as the double-ended screw 51. Two adjusting plates 55 are provided, made of stainless steel, with thick silicone pads attached to the side in contact with the plate to prevent scratches. In actual operation, the operator first fixes the PVC plate using the fixing mechanism 4, but not completely. The clamping force of the fixing mechanism 4 is less than the driving force of the adjusting plate 55. Therefore, when needed... When fine-tuning the PVC sheet, the operator connects the external power supply of the second servo motor 53 through the external controller and starts the second servo motor 53. The second servo motor 53 drives the double-headed screw 51 to rotate, and the double-headed screw 51 drives the two drive seats 54 to move. The two drive seats 54 move relative to each other, and the two drive seats 54 drive their respective adjustment plates 55 to move. Since the position of the PVC sheet may not be in the set position, one side of the adjustment plate 55 may contact the PVC sheet first and push the PVC sheet until the other side of the PVC sheet contacts the other adjustment plate 55. At this time, the fine-tuning is completed, and the adjustment plate 55 can clamp and fix the PVC sheet, improve the stability of the PVC sheet during drilling, and thus improve the processing accuracy of the PVC sheet drilling positioning equipment. Furthermore, laser emitters 21 are fixedly connected to both sides of the outer wall of the drilling assembly 2, and a connecting plate 22 is fixedly connected to the top of the drilling assembly 2. The outer walls of the connecting plate 22 are respectively fixedly connected to the sides of the outer walls of the two connecting blocks 45 that are close to each other. An electric telescopic rod 23 is fixedly connected to the top of the connecting plate 22, and a support plate 24 is fixedly connected to the top of the electric telescopic rod 23. The outer wall of the support plate 24 is fixedly connected to the side of the outer wall of the support frame 11 away from the first straightening roller 31. In the specific implementation process, it is worth noting that the model and quantity of the laser emitter 21 can be selected according to actual needs, as long as it meets the operational requirements. For example, two red light emitters of model GL6-N1112 can be selected for pre-positioning and aiming to ensure the visualization of the drilling point. The connecting plate 22 is a rectangular plate, and its material can be stainless steel. Its side walls are fixedly connected with sliders. The model of the electric telescopic rod 23 can be selected according to actual needs, as long as it meets the operational requirements. For example, it can be a TOLOMATICES16 model. The support plate 24 has a similar cross-section. The L'-shaped structure has a rectangular groove machined on the outer wall near the drilling assembly 2, which cooperates with the slider on the side wall of the connecting plate 22 to limit the movement of the electric telescopic rod 23. Its material is the same as that of the connecting plate 22. In actual operation, when it is necessary to move the drilling assembly 2, the operator connects the external power supply of the electric telescopic rod 23 through the external controller and starts the electric telescopic rod 23. The electric telescopic rod 23 drives the connecting plate 22 to move, and the connecting plate 22 drives the drilling assembly 2 to move, thereby realizing the drilling operation and improving the drilling stability of the PVC board drilling positioning equipment. Furthermore, support rods 321 are fixedly connected to both sides of the outer wall of the two first fixing plates 32, and the outer walls of the four support rods 321 are respectively fixedly connected to both sides of the outer wall of the second fixing plate 37. In the specific implementation process, it is worth noting that there are four support rods 321, which are similar to square rods in shape. They provide support for the first fixed plate 32 and the second fixed plate 37, thereby improving the structural stability of the PVC board drilling and positioning equipment. Furthermore, limit rods 341 are provided on both sides of the outer wall of the electric push rod 36. The outer walls of the two limit rods 341 penetrate the outer wall of the second fixed plate 37 and extend to the top of the second fixed plate 37. In the specific implementation process, it is worth noting that there are two limit rods 341. The material can be stainless steel. The rod is similar to a round rod. The top of the rod is fixedly connected to a limit plate. In actual operation, the limit rod 341 limits the movement of the electric push rod 36, thereby improving the operational stability of the PVC board drilling and positioning equipment. Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A PVC board drilling and positioning device, comprising a base plate (1), characterized in that: A support frame (11) is fixedly connected to the top of the base plate (1), and a drilling assembly (2) is provided above the support frame (11). The PVC board drilling and positioning equipment also includes: The correction mechanism (3) is located on the side of the support frame (11); The fixing mechanism (4) is located on the side of the drilling assembly (2); The adjustment mechanism (5) is located at the bottom of the support frame (11); The PVC sheet to be processed is corrected by the correction mechanism (3), the corrected PVC sheet is fixed by the fixing mechanism (4), and the fixed PVC sheet is fine-tuned by the adjustment mechanism (5).

2. The PVC board drilling and positioning device according to claim 1, characterized in that: The corrective mechanism (3) includes: There are two first straightening rollers (31), both of which are located on the side of the support frame (11); There are two first fixing plates (32), which are rotatably connected to the two ends of the two first straightening rollers (31) through sealed bearings; The first servo motor (33) is fixedly connected to the outer wall of the first fixed plate (32), and its output end is fixedly connected to the end of the first straightening roller (31); A fixing frame (34) is positioned above the first straightening roller (31); The second straightening roller (35) is rotatably connected to the bottom of the fixed frame (34) via a sealed bearing; An electric push rod (36) is fixedly connected to the top of the fixed frame (34); The second fixing plate (37) is fixedly connected to the top of the electric push rod (36); The PVC sheet to be processed is straightened by the cooperation of the first straightening roller (31), the first fixing plate (32), the first servo motor (33), the fixing frame (34), the second straightening roller (35), the electric push rod (36) and the second fixing plate (37).

3. The PVC board drilling and positioning device according to claim 1, characterized in that: The fixing mechanism (4) includes: There are two protective covers (41), which are respectively installed on both sides of the outer wall of the drilling assembly (2); Two damping pads (42) are provided and are respectively fixedly connected to the bottom of the two protective covers (41); There are two connecting rods (43), which are fixedly connected to the top of the two protective covers (41) respectively; Two springs (44) are provided, each sleeved on the outer wall of one of the two connecting rods (43); There are two connecting blocks (45), which are respectively sleeved on the outer walls of the two connecting rods (43), and the bottoms of the two connecting blocks (45) are respectively attached to the tops of the two springs (44); The PVC sheet is fixed by the cooperation of the protective cover (41), damping pad (42), connecting rod (43), spring (44) and connecting block (45).

4. The PVC board drilling and positioning device according to claim 1, characterized in that: The adjustment mechanism (5) includes: A double-headed screw (51) is disposed between the support frame (11) and the base plate (1); There are two fixed seats (52), which are rotatably connected to the two ends of the double-ended screw (51) through sealed bearings, and the tops of the two fixed seats (52) are respectively fixedly connected to the bottom sides of the support frame (11); The second servo motor (53) is fixedly connected to the outer wall of one of the fixed bases (52), and its output end is fixedly connected to the end of the double-headed screw (51); Two drive seats (54) are provided, which are threaded to the outer walls of the double-ended screw (51) respectively, and the outer walls of the two drive seats (54) are slidably connected to the inner walls of the two connecting grooves (12) respectively, and extend to the top of the support frame (11). Two adjustment plates (55) are provided, which are respectively fixedly connected to the outer walls of the two drive seats (54) on the side that are close to each other; The PVC sheet is finely adjusted by the cooperation of the double-headed screw (51), the fixed seat (52), the second servo motor (53), the drive seat (54) and the adjustment plate (55).

5. A PVC board drilling and positioning device according to claim 3, characterized in that: Laser emitters (21) are fixedly connected to both sides of the outer wall of the drilling assembly (2). A connecting plate (22) is fixedly connected to the top of the drilling assembly (2). The outer walls of the connecting plate (22) are respectively fixedly connected to the sides of the outer walls of the two connecting blocks (45) that are close to each other. An electric telescopic rod (23) is fixedly connected to the top of the connecting plate (22). A support plate (24) is fixedly connected to the top of the electric telescopic rod (23). The outer wall of the support plate (24) is fixedly connected to the side of the outer wall of the support frame (11) away from the first straightening roller (31).

6. A PVC board drilling and positioning device according to claim 2, characterized in that: Support rods (321) are fixedly connected to both sides of the outer wall of the two first fixing plates (32), and the outer walls of the four support rods (321) are respectively fixedly connected to both sides of the outer wall of the second fixing plate (37).

7. A PVC board drilling and positioning device according to claim 2, characterized in that: Limiting rods (341) are provided on both sides of the outer wall of the electric push rod (36). The outer walls of the two limiting rods (341) penetrate the outer wall of the second fixing plate (37) and extend to the top of the second fixing plate (37).

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