A kind of rotary cutter gap automatic adjusting device

Abstract

The utility model discloses a kind of automatic adjusting device of knife gap of rotary cutting machine, it is related to rotary cutting machine technical field, including knife gap adjustment servo motor, lead screw shaft, lead screw seat, limit seat and knife gap adjustment oil cylinder, knife gap adjustment servo motor is used to control lead screw shaft rotation, lead screw seat is installed on the ruler holder for installing ruler and located in the front end of lead screw shaft, lead screw shaft rear end is connected with the transmission of knife gap adjustment servo motor, the front end of lead screw shaft is connected with the threaded hole of the screw thread set on lead screw seat, limit seat is set to the top of the blade holder for installing blade and opposite with the front end of lead screw shaft, the cylinder body end of knife gap adjustment oil cylinder is fixed on blade holder, the piston rod end of knife gap adjustment oil cylinder is fixed on ruler holder, knife gap adjustment oil cylinder moves back and forth by piston rod to push ruler holder;Automatic adjusting device of knife gap of rotary cutting machine in the utility model, can improve knife gap adjustment precision, improve production efficiency, reduce manpower cost.

Description

Technical Field

[0001] This utility model relates to the field of veneer cutting machine technology, and in particular to an automatic blade gap adjustment device for veneer cutting machines. Background Technology

[0002] A veneer laminator holds the log in place by a chuck, causing it to rotate around its own axis. Simultaneously, a blade holder with sharp blades feeds radially along the log. As the blades contact the rotating wood, they peel off layers of wood to form veneer. A pressure gauge is installed behind the blades to hold the portion of the log to be cut, ensuring that the veneer does not tear or split. The "blade gap" is the horizontal distance between the blades and the pressure gauge.

[0003] Currently, the blade gap adjustment is done using a mechanical screw. The accuracy of the blade gap adjustment is one of the main factors determining the precision of rotary cutting of veneers. Blade gap adjustment mainly depends on the operator's proficiency in the machine. This not only requires a high level of operator skill but is also cumbersome and not conducive to improving production efficiency. Utility Model Content

[0004] The purpose of this invention is to provide an automatic blade gap adjustment device for a rotary cutting machine to solve the problems existing in the prior art, thereby improving the blade gap adjustment accuracy, increasing production efficiency, and reducing labor costs.

[0005] To achieve the above objectives, this utility model provides the following solution: This utility model provides an automatic blade gap adjustment device for a veneer lathe, including a blade gap adjustment servo motor, a lead screw shaft, a lead screw seat, a limit seat, and a blade gap adjustment cylinder. The blade gap adjustment servo motor controls the rotation of the lead screw shaft. The lead screw seat is mounted on a pressure gauge frame for mounting a pressure gauge and is located at the front end of the lead screw shaft. The rear end of the lead screw shaft is connected to the blade gap adjustment servo motor via a transmission mechanism. The front end of the lead screw shaft is threadedly connected to a threaded hole provided on the lead screw seat. The limit seat is located on the top of a blade plate frame for mounting a blade plate and is opposite to the front end of the lead screw shaft. The cylinder body of the blade gap adjustment cylinder is fixed to the blade plate frame, and the piston rod end of the blade gap adjustment cylinder is fixed to the pressure gauge frame. The blade gap adjustment cylinder pushes the pressure gauge frame to move back and forth through the piston rod.

[0006] Preferably, the blade gap adjustment servo motor is mounted on the top of the pressure gauge frame via a motor bracket.

[0007] Preferably, the transmission mechanism includes a spline disposed on the rear end shaft of the lead screw and a rotating spline sleeve connected to the spline, the rotating spline sleeve being connected to the power output shaft of the tool gap adjustment servo motor.

[0008] Preferably, the transmission mechanism includes a timing pulley, a timing belt, and a drive wheel. The timing pulley is disposed on the rear end shaft of the lead screw, and the timing pulley is connected to the drive wheel disposed on the tool gap adjustment servo motor through the timing belt.

[0009] Preferably, the end of the piston rod of the gap adjusting cylinder is connected to the rear end of the pressure gauge frame via a connecting bracket.

[0010] Preferably, the cylinder body of the tool gap adjusting cylinder is mounted on the rear end of the tool plate holder via a mounting bracket.

[0011] The present invention achieves the following technical advantages over the prior art: Improved precision and stability: With mechanical screw structures, operators need to manually adjust the screw with a wrench. Even experienced technicians cannot avoid errors of ±0.05mm caused by uneven force and visual deviation, which directly affects the consistency of wood veneer thickness. The scrap rate of high-end decorative materials often reaches 3%-5%. By using a servo motor drive, in conjunction with the blade gap adjustment wheel and blade gap adjustment screw to adjust the blade gap, the blade gap adjustment error is stabilized within ±0.005mm, the consistency of wood veneer thickness is improved by 80%, and the pass rate of high-end custom materials climbs from 92% to 99.5%.

[0012] Improved production efficiency: With a mechanical screw structure, changing wood species or adjusting thickness parameters requires machine downtime, taking approximately 15-20 minutes per operation. In multi-batch, small-volume production scenarios, the equipment's effective utilization rate is significantly reduced. By adopting a PLC system to control servo motor adjustments, changeover adjustment time is drastically reduced from 15 minutes to 30 seconds, increasing the equipment's effective operating rate by 25%.

[0013] Labor costs: Previously, training a skilled operator to operate precisely required 6-12 months, and staff turnover could cause fluctuations in production stability. Now, the operator training cycle has been shortened to 1 week, reducing labor costs by 40%. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a three-dimensional structural diagram of the veneer cutting machine in Example 1; Figure 2 for Figure 1 A magnified view of a section at point A in the middle; Figure 3This is a three-dimensional structural diagram of the veneer cutting machine in Example 2; Figure 4 for Figure 3 A magnified view of a section at point B in the middle; In the diagram: 101. Automatic blade gap adjustment device for veneer lathe; 1. Blade gap adjustment servo motor; 2. Lead screw shaft; 3. Lead screw seat; 4. Limit seat; 5. Blade gap adjustment cylinder; 6. Blade plate; 7. Blade plate holder; 8. Pressure gauge; 9. Pressure gauge holder; 10. Rotary spline sleeve; 11. Synchronous pulley; 12. Synchronous belt; 13. Drive wheel; 14. Connecting frame; 15. Mounting frame. Detailed Implementation

[0016] 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.

[0017] The purpose of this invention is to provide an automatic blade gap adjustment device for a rotary cutting machine to solve the problems existing in the prior art.

[0018] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] Example 1: like Figures 1-2 As shown, the automatic blade gap adjustment device 101 of the veneer cutting machine in this embodiment includes a blade gap adjustment servo motor 1, a lead screw shaft 2, a lead screw seat 3, a limit seat 4, and a blade gap adjustment cylinder 5. The blade gap adjustment servo motor 1 is used to control the rotation of the lead screw shaft 2. The lead screw seat 3 is installed on the pressure gauge frame 9 for installing the pressure gauge 8 and is located at the front end of the lead screw shaft 2. The rear end of the lead screw shaft 2 is connected to the blade gap adjustment servo motor 1. The front end of the lead screw shaft 2 is threadedly connected to the threaded hole provided on the lead screw seat 3. The limit seat 4 is provided on the top of the blade plate frame 7 for installing the blade plate 6 and is opposite to the front end of the lead screw shaft 2. The cylinder body end of the blade gap adjustment cylinder 5 is fixed on the blade plate frame 7, and the piston rod end of the blade gap adjustment cylinder 5 is fixed on the pressure gauge frame 9. The blade gap adjustment cylinder 5 pushes the pressure gauge frame 9 to move back and forth through the piston rod.

[0020] In this specific embodiment, the blade gap adjustment servo motor 1 is mounted on the top of the pressure gauge frame 9 via a motor bracket.

[0021] In this specific embodiment, the transmission mechanism includes a spline disposed on the rear end shaft of the lead screw 2 and a rotating spline sleeve 10 connected to the spline. The rotating spline sleeve 10 is connected to the power output shaft of the tool gap adjustment servo motor 4. The tool gap adjustment servo motor 1 drives the lead screw 2 to rotate through the rotating spline sleeve 10. Since the lead screw 2 is threadedly connected to the lead screw seat 3, the rotational motion of the lead screw 2 is converted into axial linear motion, thereby adjusting the distance between the front end of the lead screw 2 and the limit seat 4. When the tool gap adjustment cylinder 5 pushes the pressure gauge frame 9 toward the limit seat 4, the lead screw 2 moves synchronously. The distance between the lead screw 2 and the limit seat 4 determines the distance it can move. This distance is the horizontal gap (tool gap) between the pressure gauge 8 and the blade plate 6. That is, by adjusting the size of the gap between the lead screw 2 and the limit seat 4, the tool gap adjustment is achieved.

[0022] In this specific embodiment, the end of the piston rod of the gap adjusting cylinder 5 is connected to the rear end of the pressure gauge frame 9 via a connecting bracket 14.

[0023] In this specific embodiment, the cylinder body of the blade gap adjusting cylinder 5 is mounted on the rear end of the blade holder 7 via the mounting bracket 15.

[0024] The working principle of the automatic blade gap adjustment device 101 of the veneer cutter in this embodiment is as follows: The lead screw 2 is driven to rotate by the tool gap adjustment servo motor 1, generating axial linear motion. This changes the gap between the lead screw 2 and the upper limit seat 4 of the tool plate holder 7, thereby adjusting the stroke of the tool gap adjustment cylinder 5 that can drive the pressure gauge holder 9 forward, thus changing the tool gap of the pressure gauge holder 9 (pressure gauge 8). The tool gap is the horizontal gap between the tool plate 6 and the pressure gauge 8. The tool gap adjustment is controlled by a PLC program. First, the tool gap value to be changed is input on the touch screen. The tool gap adjustment cylinder 5 drags the pressure gauge holder 9 backward to the cylinder limit position. The tool gap adjustment servo motor 1 rotates the spline sleeve 10 to move the lead screw 2 to the set value. Then, the tool gap adjustment cylinder 5 pushes the pressure gauge holder 9 (pressure gauge 8) forward until the lead screw 2 contacts the limit seat 4, thus completing the change of the tool gap value.

[0025] Example 2: like Figures 3-4As shown, the automatic blade gap adjustment device 101 of the veneer cutting machine in this embodiment differs from that in Embodiment 1 in that, in this embodiment, the transmission mechanism includes a synchronous pulley 11, a synchronous belt 12, and a drive wheel 13. The synchronous pulley 11 is mounted on the rear shaft of the lead screw 2, and the synchronous pulley 11 is connected to the drive wheel 13 mounted on the blade gap adjustment servo motor 1 via the synchronous belt 12. In this embodiment, the rotation of the lead screw 2 is achieved through the synchronous belt 12, converting the rotational motion of the lead screw 2 into axial linear motion, thereby adjusting the distance between the front end of the lead screw 2 and the limit seat 4, and thus achieving blade gap adjustment. This embodiment differs from Embodiment 1 only in the transmission method between the lead screw 2 and the blade gap adjustment servo motor 1; the blade gap adjustment principle and process are the same as in Embodiment 1 and will not be described again.

[0026] It should be noted that the veneer cutting machine involved in this utility model is an existing device, and the blade holder 7, pressure ruler holder 9 and other structures involved are existing structures. Their working principles and structures will not be described in detail.

[0027] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. An automatic blade gap adjustment device for a veneer lathe, characterized in that: The device includes a tool gap adjustment servo motor, a lead screw shaft, a lead screw seat, a limit seat, and a tool gap adjustment cylinder. The tool gap adjustment servo motor controls the rotation of the lead screw shaft. The lead screw seat is mounted on a pressure gauge frame for mounting a pressure gauge and is located at the front end of the lead screw shaft. The rear end of the lead screw shaft is connected to the tool gap adjustment servo motor via a transmission mechanism. The front end of the lead screw shaft is threadedly connected to a threaded hole provided on the lead screw seat. The limit seat is located on the top of a tool plate frame for mounting a tool plate and is opposite to the front end of the lead screw shaft. The cylinder body of the tool gap adjustment cylinder is fixed to the tool plate frame, and the piston rod end of the tool gap adjustment cylinder is fixed to the pressure gauge frame. The tool gap adjustment cylinder pushes the pressure gauge frame to move back and forth through the piston rod.

2. The automatic blade gap adjustment device for a veneer cutting machine according to claim 1, characterized in that: The blade gap adjustment servo motor is mounted on the top of the pressure gauge frame via a motor bracket.

3. The automatic blade gap adjustment device for a veneer cutting machine according to claim 2, characterized in that: The transmission mechanism includes a spline disposed on the rear end shaft of the lead screw and a rotating spline sleeve connected to the spline. The rotating spline sleeve is connected to the power output shaft of the tool gap adjustment servo motor.

4. The automatic blade gap adjustment device for a veneer cutting machine according to claim 2, characterized in that: The transmission mechanism includes a synchronous pulley, a synchronous belt, and a drive wheel. The synchronous pulley is mounted on the rear end shaft of the lead screw, and the synchronous pulley is connected to the drive wheel mounted on the tool gap adjustment servo motor via the synchronous belt.

5. The automatic blade gap adjustment device for a veneer cutting machine according to claim 1, characterized in that: The end of the piston rod of the gap adjustment cylinder is connected to the rear end of the pressure gauge frame via a connecting bracket.

6. The automatic blade gap adjustment device for a veneer cutting machine according to claim 1, characterized in that: The cylinder body of the tool gap adjusting cylinder is mounted on the rear end of the tool plate holder via a mounting bracket.

Images