A continuous swing cutting module, energy-saving cutting machine and continuous compensation swing cutting method

Abstract

The application discloses a continuous swing cutting module, an energy-saving cutting machine and a continuous compensation swing cutting method. The continuous swing cutting module comprises a first carrier plate, a first driving cylinder and a first parallel sliding channel arranged on the back surface of the first carrier plate, and a swing cutting window arranged in the middle part of the first carrier plate; a second carrier plate is slidably arranged on the first parallel sliding channel and connected with the piston rod of the first driving cylinder, and a second parallel sliding channel is obliquely arranged on the front surface of the second carrier plate; a first driving motor is arranged on the second carrier plate and connected with a bearing through an eccentric shaft; a third carrier plate is slidably arranged on the second parallel sliding channel and is provided with a transverse groove, the bearing is embedded in the transverse groove and rotates reciprocatingly, and a cutting knife is arranged on the third carrier plate. The energy-saving cutting machine comprises a rack and the module arranged on the rack. The continuous compensation swing cutting method drives the bearing to move reciprocatingly by the one-way continuous rotation of the first driving motor, and the first driving cylinder outputs different downward compensation amounts at the left and right turning positions and the midpoint position, so that the continuous compensation swing cutting is realized. The cutting is complete, the service life of the cutting knife is long, and the energy consumption is low.

Description

Technical Field

[0001] This invention relates to an energy-saving cutting machine, and more particularly to a continuous swing cutting module, an energy-saving cutting machine, and a continuous compensation swing cutting method. Background Technology

[0002] After demolding, injection molded products will have residual sprue material at the gate. In subsequent processes, this sprue material needs to be cut and removed to obtain a finished product with a smooth surface.

[0003] Currently, the cutting of injection molding gates generally adopts the vertical downward cutting method. This traditional vertical downward cutting method involves moving the cutter straight down in the vertical direction and cutting the gate material through the shearing force between the cutter and the bottom cutter base.

[0004] During the vertical downward cutting process, the cutter moves vertically downward from the starting position to the lowest point. When the cutting reaches the last one millimeter of travel, because the sprue material usually has a certain degree of toughness, in the critical stage where the cutter is close to completely cutting but has not yet separated, the material will undergo plastic tensile deformation, forming filamentous or sheet-like adhesives. These adhesives will not be carried away as the cutter rises, but will remain on the product surface or at the root of the sprue, resulting in incomplete cutting and requiring additional manual trimming.

[0005] To overcome the aforementioned adhesion problem, existing technologies increase the downward pressure by increasing the cylinder output force or motor torque to enhance the shearing force. Vertical downward cutting relies on the shearing action between the blade edge and the top surface of the blade base. The blade edge contacts the base at nearly the same position and angle during each cut, causing localized areas of the blade to endure concentrated impact loads and frictional wear over extended periods, making the blade edge prone to dulling or chipping. This necessitates frequent blade replacements, increasing consumable costs and reducing production efficiency due to downtime for blade changes.

[0006] During vertical downward cutting, each cut requires the cutter to complete a full stroke from top to bottom. To ensure effective cutting, the cutter's stroke usually needs to be greater than the material thickness and compression allowance, resulting in significant pneumatic or electric energy consumption for each cut. Furthermore, the frequent cutter replacements necessitate recalibrating the entire machine and repeatedly switching it on and off after each replacement, further increasing standby power consumption and startup impact.

[0007] In conclusion, a completely new approach to cutting is urgently needed to overcome the above problems. Summary of the Invention

[0008] To address the shortcomings of the aforementioned technologies, this invention provides a continuous swing cutting module, an energy-saving cutting machine, and a continuous compensation swing cutting method.

[0009] To solve the above technical problems, the technical solution adopted by the present invention is: a continuous swing cutting module, comprising: A first carrier plate is set in a fixed position. The back of the first carrier plate has a first driving cylinder and a first parallel slide rail arranged vertically. A swing cutting window is opened downward in the middle of the first carrier plate. A second carrier plate is reciprocatingly slidable on a parallel slide rail. The second carrier plate is connected to the piston rod of the first drive cylinder. The front of the second carrier plate has a second parallel slide rail arranged obliquely. A first drive motor is arranged on the second carrier plate. The first drive motor is connected to a bearing through an eccentric shaft extending into the swing cutting window. A third carrier plate is reciprocatingly mounted on the second parallel slide rail. A transverse groove is provided on the third carrier plate. The bearing is embedded in the transverse groove and reciprocates within the transverse groove. A cutter is mounted on the third carrier plate that can continuously swing with the eccentric movement of the bearing.

[0010] Furthermore, two transmission arms are symmetrically hinged to the handle of the cutter. The two transmission arms are elastically set in the limiting channel opened vertically in the third carrier plate. The limiting channel is connected to the transverse channel. The upper edge of the two transmission arms forms a transmission contact point protruding from the bottom wall of the transverse channel. The two transmission contacts are correspondingly set at the left and right turning positions of the bearing reciprocating in the transverse channel.

[0011] Furthermore, the transmission arm includes an upper spherical contact, a middle connecting rod, and a lower hinge joint; the connecting rod is fitted with a spring, the upper end of the spring abuts against the lower part of the spherical contact, the lower end of the spring abuts against a stop plate mounted on the lower edge of the third carrier plate, and the connecting rod passes through a through hole in the stop plate.

[0012] Furthermore, the top spherical surface of the ball-shaped contact extends through the bottom wall of the transverse channel, and the top spherical surface forms a transmission contact for rolling contact with the bearing.

[0013] Furthermore, it also includes a cutter base fixedly mounted below the swivel cutting window by a support frame, and the cutter base has a cutter groove for the cutter to extend into; the top surface of the cutter base on both sides of the cutter groove is flush with or lower than the bearing plane of the material to be cut.

[0014] An energy-saving cutting machine includes a frame, on which a continuous swing cutting module according to any one of claims 1-5 is provided, and a first carrier plate is connected to the frame; The frame is also equipped with a load-bearing module; The load-bearing module includes: The fourth carrier plate is horizontally raised by two L-shaped support plates on the symmetrical position of the bottom surface; The fifth carrier plate is set to move vertically and reciprocate by a second drive cylinder that is vertically mounted on the fourth carrier plate. The second drive cylinder moves through the through hole of the fourth carrier plate. The sixth carrier plate is set to rotate horizontally by a second drive motor that is vertically mounted on the fifth carrier plate. Several suction cups are set on the top surface of the sixth carrier plate.

[0015] Furthermore, several third drive cylinders are vertically arranged along the fourth carrier plate; lifting columns are connected to the third drive cylinders, and several lifting columns are distributed around the fifth and sixth carrier plates. The maximum lifting height of the lifting end of the lifting column is higher than the top of the suction cup.

[0016] Furthermore, a belt conveyor module is also installed on the frame; The belt conveyor module includes: A set of support plates symmetrically arranged on both sides of the frame, each support plate having a conveyor belt rotatably mounted on it; The drive shaft is connected between the rollers of the two conveyor belts and is connected to the No. 3 drive motor, which is fixedly mounted on either support plate. A linear guide rail is set below the conveyor belt along the conveying direction of the conveyor belt, and a slider is slidably fitted on the linear guide rail; the slider corresponds to the locking cover plate on the L-shaped support plate, and the locking cover plate presses and fixes the conveyor belt to the corresponding slider.

[0017] Furthermore, a clamping module located downstream of the continuous swivel cutting module is also provided on the frame; The clamping module includes a fourth drive cylinder connected to the frame, two sets of symmetrically arranged transverse slides, and grippers respectively set on each transverse slide; the fourth drive cylinder is vertically arranged and connected to the two sets of transverse slides.

[0018] A continuous compensation swing cutting method for a continuous swing cutting module, wherein a first drive motor rotates continuously in a counterclockwise direction, driving an eccentric shaft to drive a bearing to circulate and reciprocate in a transverse channel; When the bearing moves to the left turning position of the transverse channel, the cutter performs left swing cutting, and at the same time the first drive cylinder outputs the first downward pressure to apply a first-level downward pressure compensation to the cutter. As the bearing moves from the left turning position to the right turning position in a counterclockwise direction, the left swing action of the cutter is released. The cutter maintains a rightward lateral downward pressing posture and continues cutting until it reaches the midpoint of the transverse channel. As the cutter continues to move to the right turning position from the midpoint, it rises. The first drive cylinder continues to output a second downward pressure, applying a second-level downward pressure compensation to the cutter. The second downward pressure is at least sufficient to counteract the lifting trend of the cutter caused by sliding along the second parallel slide. When the bearing reaches the right turning position, the cutter performs a right swing cut; As the bearing moves from the right steering position to the left steering position in a counterclockwise direction, the right swing action of the cutter is released, and the first drive cylinder continues to output the third downward pressure, applying three levels of downward pressure compensation to the cutter; the third downward pressure is at least sufficient to counteract the lifting trend of the cutter caused by sliding along the second parallel slide, so that the cutter maintains the leftward lateral downward pressure posture and continues to cut until it returns to the midpoint position of the lateral channel. When the midpoint position is reached, the first drive cylinder resets to the initial position; As the bearing gradually reaches the left steering position, the first drive cylinder outputs the first downward pressure, entering the next cycle.

[0019] This invention discloses a continuous swing-cutting module, an energy-saving cutting machine, and a continuous compensation swing-cutting method. Through three levels of downward pressure compensation, it overcomes the problems of incomplete cutting, short tool life, and high energy consumption associated with traditional vertical downward pressure cutting. The first level of downward pressure compensation actively applies maximum downward pressure during the left-turning position, ensuring the cutter instantly cuts into the sprue material with sufficient shearing energy, avoiding stretching deformation. The second level of downward pressure compensation counteracts the upward trend of the cutter caused by the sliding of the inclined guide rail during the latter half of the left-to-right swing, ensuring continuous cutting with lateral sliding and eliminating adhesion at the source. The third level of downward pressure compensation maintains downward pressure during the first half of the right-to-left swing return, completing a secondary trimming and cutting of the sprue material, ensuring complete and thorough cutting. The three levels of compensation work together to dynamically change the contact position between the cutter edge and the base, avoiding localized concentrated wear and effectively extending tool life. Simultaneously, the cutter does not need to complete the full stroke required for traditional vertical downward pressure; effective cutting can be achieved through small-stroke compensation during the swing process, significantly reducing energy consumption. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the three-dimensional structure of the continuous swing cutting module of the present invention. Figure 1 .

[0021] Figure 2 This is a schematic diagram of the three-dimensional structure of the continuous swing cutting module of the present invention. Figure 2 .

[0022] Figure 3 This is a schematic diagram of the three-dimensional structure of the continuous swing cutting module of the present invention. Figure 3 .

[0023] Figure 4 This is a partial disassembly diagram of the continuous swing cutting module of the present invention.

[0024] Figure 5 This is a three-dimensional structural diagram of the energy-saving cutting machine of the present invention.

[0025] Figure 6 This is a top view of the energy-saving cutting machine of the present invention.

[0026] Figure 7 This is a three-dimensional structural diagram of the load-bearing module of the present invention.

[0027] Figure 8 This is a three-dimensional structural diagram of the belt conveyor module of the present invention.

[0028] Figure 9 This is a schematic diagram of the disassembled structure of the belt conveyor module of the present invention.

[0029] Figure 10 This is a three-dimensional structural schematic view of the clamping module of the present invention.

[0030] In the diagram: 100, First carrier plate; 110, First drive cylinder; 120, First parallel slide rail; 130, Swinging cutting window; 200, Second carrier plate; 210, Second parallel slide rail; 300, Third carrier plate; 310, Transverse channel; 320, Limiting channel; 400, First drive motor; 410, Eccentric shaft; 420, Bearing; 500, Cutter; 600, Transmission arm; 610, Spherical contact; 620, Connecting rod; 630, Hinge joint; 640, Spring; 650, Abutment plate; 700, Frame; 800, Cutter base; 810, Support frame; 820, Cutter groove; 900, Bearing module; 910 911. Fourth carrier plate; 912. L-shaped support plate; 913. Through hole; 920. Fifth carrier plate; 930. Sixth carrier plate; 940. Second drive cylinder; 950. Second drive motor; 960. Suction cup; 970. Third drive cylinder; 971. Lifting column; 1000. Belt conveyor module; 1010. Support plate; 1020. Conveyor belt; 1021. Roller; 1030. Drive shaft; 1040. Third drive motor; 1050. Linear slide rail; 1060. Slider; 1070. Locking cover plate; 1100. Clamping module; 1110. Fourth drive cylinder; 1120. Transverse slide rail; 1130. Gripper. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0032] Example 1;

[0033] like Figure 1 and Figure 2 The present invention provides a continuous swing cutting module for continuously swinging and cutting the sprue material of injection molded products. The continuous swing cutting module includes a first carrier plate 100, which is disposed on a fixed position. In this embodiment, the fixed position refers to the installation position on the frame 700 of the energy-saving cutting machine. The first carrier plate 100 is generally rectangular plate structure and is arranged vertically.

[0034] A first drive cylinder 110 and a first parallel slide rail 120 are fixedly mounted on the back of the first carrier plate 100. The first drive cylinder 110 is arranged vertically and fixed to the back of the first carrier plate 100 by a cylinder body. Its piston rod extends vertically downward. It should be understood that multiple first drive cylinders 110 can be arranged vertically to drive external components connected to them to reciprocate vertically. The first parallel slide rail 120 consists of two parallel linear guide rails, fixed vertically to the back of the first carrier plate 100, providing vertical sliding guidance.

[0035] A swing-cutting window 130 is provided through the middle region of the first carrier plate 100. In this embodiment, the swing-cutting window 130 is a rectangular through hole. The function of the swing-cutting window 130 is to provide movement clearance space for the cutter 500 and the eccentric shaft 420, which will be described later, so that the cutter 500 and the eccentric shaft 420 can move freely in the middle region of the first carrier plate 100 without interference.

[0036] The continuous sliding module also includes a second carrier plate 200, which is slidably disposed on the first parallel slide rail 120. Specifically, the back side of the second carrier plate 200 is slidably engaged with the first parallel slide rail 120 through a slider, so that the second carrier plate 200 can slide back and forth vertically on the back side of the first carrier plate 100.

[0037] The second carrier plate 200 is fixedly connected to the piston rod of the first drive cylinder 110. When the first drive cylinder 110 is ventilated, its piston rod drives the second carrier plate 200 to slide back and forth vertically along the first parallel slide rail 120.

[0038] The front of the second carrier plate 200 is provided with a second parallel slide rail 210. Unlike the first parallel slide rail 120, the second parallel slide rail 210 is arranged obliquely, that is, its extension direction forms an acute angle with both the vertical and horizontal directions. In this embodiment, the second parallel slide rail 210 is inclined from the lower right to the upper left. The specific inclination angle can be set according to the actual cutting process requirements, usually between 15° and 45°. The second parallel slide rail 210 is also composed of two parallel linear guide rails, which are used to provide oblique sliding guidance for the subsequent third carrier plate 300.

[0039] A first drive motor 400 is also fixedly mounted on the second carrier plate 200. The first drive motor 400 is preferably a servo motor or a stepper motor, and its output shaft extends in a direction perpendicular to the surface of the second carrier plate 200. The output shaft of the first drive motor 400 is connected to an eccentric shaft 410, the output end of which extends into the interior of the swing-cut window 130. Specifically, a bearing 420 is rotatably sleeved on the eccentric journal of the eccentric shaft 410. When the first drive motor 400 rotates, the eccentric journal of the eccentric shaft 410 drives the bearing 420 to perform a circular motion around the axis of the motor output shaft, that is, the trajectory of the bearing 420 is a circle centered on the axis of the motor output shaft.

[0040] The continuous sliding module also includes a third carrier plate 300, which is slidably disposed on the second parallel slide rail 210. Specifically, the back side of the third carrier plate 300 is slidably engaged with the second parallel slide rail 210 through a slider, so that the third carrier plate 300 can slide back and forth obliquely on the front side of the second carrier plate 200.

[0041] A transverse channel 310 is formed on the third carrier plate 300. The transverse channel 310 is an elongated through-slot extending laterally. The bearing 420 is embedded in the transverse channel 310, and the outer periphery of the bearing 420 forms a rolling or sliding fit with the two side walls of the transverse channel 310, preferably a rolling fit. When the first drive motor 400 rotates, the eccentric shaft 410 drives the bearing 420 to perform a circular motion. Since the bearing 420 is constrained within the transverse channel 310, the circular motion of the bearing 420 is converted into a reciprocating linear motion within the transverse channel 310, that is, the bearing 420 reciprocates between the left and right ends of the transverse channel 310.

[0042] A cutter 500 is also installed on the third carrier plate 300, and the cutter 500 can move with the movement of the third carrier plate 300. Since the third carrier plate 300 slides along the obliquely arranged second parallel slide rail 210 and is driven by the reciprocating motion of the bearing 420 in the transverse channel 310, the movement trajectory of the cutter 500 is a composite motion of oblique sliding and transverse oscillation, thereby realizing oscillating cutting.

[0043] More specifically, such as Figure 3 and Figure 4 As shown, two transmission arms 600 are symmetrically hinged to the handle of the cutter 500; the two transmission arms 600 are symmetrically arranged on the left and right sides of the cutter 500, and each transmission arm 600 is elastically set in the limiting channel 320 opened vertically in the third carrier plate 300; the limiting channel 320 is a through channel extending vertically, and its upper end is connected to the transverse channel 310; the transmission arm 600 passes through the limiting channel 320 and can elastically float vertically along the limiting channel 320.

[0044] Each drive arm 600 has a drive contact protruding from the bottom wall of the transverse channel 310 along its upper edge. The positions of the two drive contacts are configured such that when the bearing 420 reciprocates within the transverse channel 310 to the left turning position, the outer periphery of the bearing 420 abuts against the drive contact on the left; when the bearing 420 reciprocates to the right turning position, the outer periphery of the bearing 420 abuts against the drive contact on the right. The left turning position refers to the position of the bearing 420 when it returns from the leftmost end of its movement within the transverse channel 310, and the right turning position refers to the position of the bearing 420 when it returns from the rightmost end of its movement.

[0045] More specifically, such as Figure 4 As shown, the transmission arm 600 includes, from top to bottom, a spherical contact 610, a connecting rod 620, and a hinge joint 630. The spherical contact 610 is located at the uppermost end of the transmission arm 600, and its top is hemispherical or spherical. The connecting rod 620 is a slender rod-like structure that connects the spherical contact 610 and the hinge joint 630. The hinge joint 630 is located at the lowermost end of the transmission arm 600 and is hinged to the handle of the cutter 500 via a pin.

[0046] A spring 640 is fitted around the outer periphery of the connecting rod 620. The spring 640 is preferably a compression coil spring with an inner diameter larger than the outer diameter of the connecting rod 620, allowing it to freely fit around the outside of the connecting rod 620. The upper end of the spring 640 abuts against the lower end face of the ball-shaped contact 610, and the lower end of the spring 640 abuts against the upper surface of a stop plate 650. The stop plate 650 is fixedly installed at the lower edge of the third carrier plate 300, and has a through hole for the connecting rod 620 to pass through. The lower end of the connecting rod 620 passes through the through hole and extends downwards, so that the hinge joint 630 is located below the stop plate 650.

[0047] Spring 640 applies an upward elastic thrust to spherical contact 610, causing the top spherical surface of spherical contact 610 to always tend to extend upward through the bottom wall of transverse channel 310. In this embodiment, the top spherical surface of spherical contact 610 extends through the bottom wall of transverse channel 310 under the action of spring 640, and the top spherical surface constitutes a transmission contact point for forming a rolling contact with the outer periphery of bearing 420. Since the top of spherical contact 610 is a spherical structure, when bearing 420 rolls in transverse channel 310 to contact spherical contact 610, there is a rolling contact between bearing 420 and the spherical surface, resulting in low frictional resistance and sensitive response.

[0048] When the bearing 420 moves to the left turning position within the transverse channel 310, the outer periphery of the bearing 420 abuts against the top spherical surface of the ball-shaped contact 610 of the left-side drive arm, pushing the drive arm 600 downward along the limiting channel 320, thereby driving the handle of the cutter 500 to swing to the left via the hinge joint 630. When the bearing 420 leaves the left turning position and moves to the right, the left-side drive arm 600 returns to its original position upward under the action of the spring 640.

[0049] Similarly, when the bearing 420 moves to the right-turning position within the transverse channel 310, the outer periphery of the bearing 420 abuts against the top spherical surface of the ball-shaped contact 610 of the right-side drive arm, pushing the drive arm downward and driving the handle of the cutter 500 to swing to the right. When the bearing 420 leaves the right-turning position and moves to the left, the right-side drive arm 600 returns to its original position upward under the action of the spring 640.

[0050] like Figure 2 As shown, the continuous oscillating cutting module also includes a cutter base 800. The cutter base 800 is fixedly mounted directly below the oscillating cutting window 130 via a support frame 810. One end of the support frame 810 is fixedly connected to the frame 700, and the other end is fixedly connected to the cutter base 800, supporting the cutter base 800 below the oscillating cutting window 130. A cutting groove 820 is formed on the cutter base 800. The cutting groove 820 extends laterally, and its width is greater than the thickness of the cutter 500, allowing the cutter 500 to extend into it during oscillating cutting. The depth of the cutting groove 820 should be greater than the maximum cutting depth of the cutter 500 to ensure that the cutter 500 does not collide with the bottom of the cutting groove 820 during oscillation.

[0051] Specifically, when the cutter 500 swings to its lowest point, the cutting edge of the cutter 500 enters the cutter groove 820, and a shearing gap is formed between the two sides of the cutting edge and the top surfaces of the two sides of the cutter groove 820, in which the sprue material is cut off.

[0052] The top surface of the cutter base 800 is configured in the height direction to be flush with or slightly lower than the bearing plane of the material to be cut. When the material is supported on the bearing plane, the top surface of the cutter base 800 is substantially flush with or slightly lower than the bottom surface of the material, so that the blade of the cutter 500 can completely cut the sprue material from the root of the material without leaving any residue due to the height difference between the material and the base.

[0053] It should be understood that the continuous swing cutting module can achieve continuous swing cutting by utilizing the cutting edge of the cutter 500 itself, even without the cutter base 800.

[0054] The following explanation, based on the above structure, details the specific working principle of the continuous swing cutting module during the continuous swing cutting process.

[0055] When the continuous swing cutting module is in standby mode, the first drive motor 400 is in a stopped state, the piston rod of the first drive cylinder 110 is in a retracted state, i.e., the initial position, the second carrier plate 200 is located at the upper part of the first parallel slide 120, the third carrier plate 300 is located in the middle of the second parallel slide 210, and the cutter 500 is in a raised state, higher than the surface of the material to be cut.

[0056] After the injection molded part is conveyed to the cutting station below the cutter 500, the continuous swing cutting module begins to perform the cutting action. The first drive motor 400 rotates continuously in a counterclockwise direction (viewed from the direction of the motor output shaft), driving the eccentric shaft 410 to rotate synchronously. Due to the eccentric effect of the eccentric shaft 410, the bearing 420 sleeved on its eccentric neck performs a circular motion around the axis of the motor output shaft, while being constrained within the transverse groove 310 of the third carrier plate 300, converting the circular motion into reciprocating linear motion within the transverse groove 310.

[0057] When the bearing 420 moves to the left-turning position of the transverse channel 310, the outer periphery of the bearing 420 abuts against the top spherical surface of the ball-shaped contact 610 of the left drive arm 600, pushing the left drive arm 600 to move downward along the limiting channel 320. The left drive arm 600 pulls the handle of the cutter 500 through the hinge joint 630 at its lower end, causing the cutter 500 to swing to the left. At this time, the blade of the cutter 500 moves to the lower left and cuts into the sprue material.

[0058] At the same time, the first drive cylinder 110 outputs the first downward pressure, driving the second carrier plate 200 to slide downward along the first parallel slide rail 120. Since the third carrier plate 300 and the cutter 500 on it are both mounted on the second carrier plate 200, the downward movement of the second carrier plate 200 drives the entire third carrier plate 300 and the cutter 500 to move downward as a whole, applying a first-level downward pressure compensation to the cutter 500, so that the cutter 500, on the basis of swinging to the left, superimposes a downward active pressing action, cutting into the sprue material with a larger cutting depth, realizing left swing cutting.

[0059] After the bearing 420 leaves the left-turning position, it continues to move counterclockwise towards the right-turning position of the transverse channel 310. During this process, the bearing 420 gradually disengages from the ball-shaped contact 610 of the left-side drive arm 600, and the left-side drive arm 600 returns to its original position under the elastic restoring force of the spring 640, releasing the leftward swing of the cutter 500. However, because the cutter 500 is constrained by the obliquely arranged second parallel slide 210 on the third carrier plate 300, when the third carrier plate 300 slides along the second parallel slide 210, the cutter 500 still maintains a rightward downward pressing posture in the transverse direction. That is, the blade of the cutter 500 remains in contact with the material and continues to cut during its rightward movement. This cutting method is completely different from the traditional vertical downward pressing cutting. The blade of the cutter 500 cuts through the root of the sprue material in a transverse sliding manner, using transverse shearing force to complete the cut.

[0060] When the bearing 420 moves to the midpoint of the transverse channel 310 (i.e., the midpoint between the left-turning and right-turning positions), the cutter 500 completes the transition from left-swinging cut to rightward transverse downward cut. As it continues to move to the rightward turning position from this midpoint, the cutter 500 gradually approaches the right-side drive arm 600, requiring it to gradually rise to prepare for the next right-swinging cut. Simultaneously, the first drive cylinder 110 switches from a first downward pressure to a second downward pressure, applying secondary downward pressure compensation to the cutter 500. This second downward pressure is sufficient to at least counteract the upward tendency of the cutter 500 caused by sliding along the obliquely arranged second parallel slide 210, ensuring that although the cutter 500 rises somewhat in the latter half of its rightward movement, it still maintains contact with the material and a certain downward pressure, ensuring the continuity of the cutting process without interruption.

[0061] When the bearing 420 continues to move to the right turning position of the transverse channel 310, the outer periphery of the bearing 420 abuts against the top spherical surface of the ball contact 610 of the right transmission arm 600, pushing the right transmission arm 600 to move downward. The right transmission arm 600 pushes the handle of the cutter 500 through the hinge joint 630, causing the cutter 500 to swing to the right and perform right swing cutting.

[0062] After bearing 420 leaves the right-turning position, it continues to return to the left-turning position of the transverse channel 310 in a counter-clockwise direction. During this process, bearing 420 gradually disengages from the right-side drive arm 600, which returns to its original position under the action of spring 640, releasing the rightward swing of cutter 500. Similarly, due to the oblique constraint of the second parallel slide 210, cutter 500 maintains a leftward transverse downward pressing posture and continues cutting during the return process.

[0063] At the same time, the first drive cylinder 110 continues to gradually output a third downward pressure, applying three levels of downward pressure compensation to the cutter 500. This third downward pressure is also sufficient to counteract the upward trend of the cutter 500 caused by sliding along the second parallel slide 210, so that the cutter 500 maintains contact with and cuts the material during the process of returning to the left.

[0064] When the bearing 420 returns to the midpoint of the transverse channel 310, the cutter 500 completes the transition from right-swinging cutting to left-side transverse downward cutting. At this time, the first drive cylinder 110 resets to the initial position, the piston rod retracts completely, and the cutter 500 rises, leaving the material surface.

[0065] Bearing 420 continues to move counterclockwise to the left turning position. At this time, the first drive cylinder 110 outputs the first downward pressure again, entering the next cycle of left swing cutting. This cycle repeats continuously. The cutter 500 performs one left swing cut and one right swing cut in each complete motion cycle, and maintains a continuous lateral downward cutting state between the left turning position and the midpoint, and between the right turning position and the midpoint. The cutter lifts and resets only in the transition section between the two midpoint positions.

[0066] Through the above working process, the continuous swing cutting module uses the unidirectional continuously rotating No. 1 drive motor 400 as a continuous power source. The rotational motion is converted into lateral reciprocating motion through the eccentric shaft 410 and bearing 420. Then, the cutter 500 is alternately driven to swing left and right by two symmetrically arranged transmission arms 600. At the same time, the first drive cylinder 110 outputs different downward pressure compensation amounts in different stroke segments, so that the cutter 500 has downward pressure cutting capability in both the left swing cutting segment and the right swing cutting segment, and maintains the continuity of lateral cutting during the left and right swing switching process, thereby completing the efficient, continuous and complete cutting of sprue material.

[0067] Example 2;

[0068] The present invention also provides an energy-saving cutting machine, such as... Figure 5 and Figure 6 As shown, it includes a frame 700, which serves as the supporting skeleton for the entire cutting machine.

[0069] The continuous swing cutting module of Embodiment 1 is installed on the frame 700. Specifically, the first carrier plate 100 of the continuous swing cutting module is fixedly connected to the left and right side columns of the frame 700, so that the entire continuous swing cutting module is suspended or supported on the frame 700, and a cutting station is formed below its cutter 500.

[0070] The frame 700 is also equipped with a support module 900, which is used to support the injection molded products to be cut and to transport the products to the cutting station.

[0071] like Figure 7As shown, the support module 900 includes a fourth carrier plate 910, a fifth carrier plate 920, and a sixth carrier plate 930. The fourth carrier plate 910 is a horizontally arranged flat plate, with two L-shaped support plates 911 fixedly installed at symmetrical positions on its bottom surface. One folded edge of the L-shaped support plate 911 is fixedly connected to the bottom surface of the fourth carrier plate 910, and the other folded edge is fixedly connected to the worktable surface of the frame 700, thereby horizontally elevating the fourth carrier plate 910 above the frame 700. A vertical through hole 912 is opened in the central area of ​​the fourth carrier plate 910 for the piston rod of the second drive cylinder 940 (described later) to pass through.

[0072] The fifth carrier plate 920 is a flat plate horizontally arranged above the fourth carrier plate 910, and is vertically reciprocated by a second drive cylinder 940 mounted vertically on the fourth carrier plate 910. Specifically, the cylinder body of the second drive cylinder 940 is fixedly mounted on the bottom surface of the fourth carrier plate 910, and the piston rod of the second drive cylinder 940 passes upward through a through hole in the fourth carrier plate 910 and is fixedly connected to the center of the bottom surface of the fifth carrier plate 920. When the second drive cylinder 940 is ventilated, its piston rod extends and retracts, driving the fifth carrier plate 920 to vertically reciprocate above the fourth carrier plate 910.

[0073] The sixth carrier plate 930 is positioned above the fifth carrier plate 920 and is horizontally rotatable via a second drive motor 950 vertically mounted on the fifth carrier plate 920. Specifically, the housing of the second drive motor 950 is fixedly mounted through the fifth carrier plate 920, and the output shaft of the second drive motor 950 extends vertically upward and is fixedly connected to the center of the bottom surface of the sixth carrier plate 930. When the second drive motor 950 rotates, its output shaft drives the sixth carrier plate 930 to rotate in the horizontal plane, thereby adjusting the orientation angle of the material placed on the sixth carrier plate 930.

[0074] Several suction cups 960 are fixedly installed on the top surface of the sixth carrier plate 930. The suction cups 960 are evenly distributed on the top surface of the sixth carrier plate 930 and are used to adsorb and fix the injection molded products placed on it. It should be understood that the suction cups 960 can be connected to a vacuum generating device through air pipes. In other embodiments, ordinary suction cups or positioning clips can also be used instead of suction cups 960. When the vacuum generating device is activated, the suction cups 960 generate negative pressure to adsorb the product onto the top surface of the sixth carrier plate 930; when the vacuum generating device is turned off or the vacuum is broken, the suction cups 960 release the product.

[0075] Furthermore, several third drive cylinders 970 are vertically fixedly installed on the fourth carrier plate 910. The number and position of the third drive cylinders 970 are determined according to the size and shape of the product, usually two, four or six, evenly distributed in the peripheral areas of the fifth carrier plate 920 and the sixth carrier plate 930. A lifting column 971 is fixedly connected to the upper end of the piston rod of each third drive cylinder 970; the lifting column 971 is a vertically extending columnar structure. When the piston rod of the third drive cylinder 970 is fully extended, the height reached by the top of the lifting column 971 is higher than the top height of the suction cup 960, which is used to assist in lifting the injection molded product.

[0076] like Figure 6 As shown, the frame 700 is also equipped with a belt conveyor module 1000, which is used to transport the cut products from the cutting station to the next process.

[0077] Specifically, such as Figure 8 and Figure 9 As shown, the belt conveyor module 1000 includes a set of support plates 1010 symmetrically arranged on both sides of the frame 700. The two support plates 1010 are fixedly installed on the left and right sides of the frame 700 and extend in the front-back direction. A conveyor belt 1020 is rotatably installed on each support plate 1010. The conveyor belt 1020 is an annular belt that is wound around the rollers 1021 at the front and rear ends of the support plate 1010.

[0078] The rollers 1021 of the two conveyor belts 1020 are connected by a drive shaft 1030. The drive shaft 1030 extends laterally, and its two ends are fixedly connected to the center positions of the driving rollers or driven rollers of the left and right conveyor belts 1020, respectively. The drive shaft 1030 is connected to a third drive motor 1040 fixedly mounted on either support plate 1010. When the third drive motor 1040 rotates, its power is synchronously transmitted to the left and right conveyor belts 1020 through the drive shaft 1030, driving the two conveyor belts 1020 to operate synchronously to transport the products placed on them.

[0079] A linear slide rail 1050 is provided along the conveying direction (i.e., the front-to-back direction) of the conveyor belt 1020 and below the conveyor belt 1020. The linear slide rail 1050 is fixedly installed on the support plate 1010 and extends in the front-to-back direction. A slider 1060 is slidably fitted on the linear slide rail 1050, and the slider 1060 corresponds to the locking cover plate 1070 provided on the L-shaped support plate 911. Specifically, the locking cover plate 1070 is fixedly provided on the bottom folded edge of the L-shaped support plate 911. The locking cover plate 1070 is located above the conveyor belt 1020. When the locking cover plate 1070 is pressed down, it presses and fixes the conveyor belt 1020 to the corresponding slider 1060.

[0080] With the above structure, when the slider 1060 slides back and forth along the linear slide rail 1050, it drives the L-shaped support plate 911 and the entire bearing module 900 to move in the front and back direction, thereby transporting the product on the bearing module 900 from the waiting station to the cutting station.

[0081] A clamping module 1100 is also provided on the frame 700. The clamping module 1100 is located downstream of the continuous swing cutting module (i.e., behind along the conveying direction) and is used to clamp and fix the product during the cutting process to prevent the product from shifting during cutting.

[0082] like Figure 10 As shown, specifically, the clamping module 1100 includes a fourth drive cylinder 1110, two sets of transverse slides 1120, and two grippers 1130. The fourth drive cylinder 1110 is vertically arranged, and its cylinder body is fixedly connected to the frame 700. The piston rod of the fourth drive cylinder 1110 extends vertically, and its output end is connected to the two sets of transverse slides 1120 for driving the two sets of transverse slides 1120 to move up and down synchronously vertically. The two sets of transverse slides 1120 are symmetrically arranged on the left and right sides of the cutting station, extending laterally respectively. Each transverse slide 1120 has a gripper 1130 slidably mounted on it. The gripper 1130 can slide back and forth laterally on the transverse slide 1120 to clamp / release the product.

[0083] The working process of the clamping module 1100 is as follows: after the product is transported to the cutting station and cut, the piston rod of the fourth drive cylinder 1110 extends, driving the two sets of transverse slides 1120 to move as a whole to approximately the same height as the product; then the gripper 1130 approaches and clamps the two sides of the product along the transverse slides 1120, the piston rod of the fourth drive cylinder 1110 continues to extend, and moves synchronously with the lifting column 971 on the piston rod of the third drive cylinder 970, so as to quickly clamp the injection molded product. After that, the gripper 1130 returns to its original position along the transverse slides 1120, the piston rod of the fourth drive cylinder 1110 retracts, the gripper 1130 releases the injection molded product, and the injection molded product falls into the material box.

[0084] Example 3;

[0085] The present invention also provides a continuous compensation swing cutting method, which is implemented using the continuous swing cutting module of any of the above embodiments; the continuous compensation swing cutting method includes the following steps:

[0086] Step S1: Drive motor 400 rotates continuously in a counterclockwise direction, driving eccentric shaft 410 to drive bearing 420 to reciprocate in the transverse channel 310.

[0087] Specifically, the first drive motor 400 rotates continuously counterclockwise at a constant or adjustable speed, and its output shaft drives the eccentric shaft 410 to rotate synchronously. Each time the eccentric neck of the eccentric shaft 410 rotates once, the bearing 420 moves from the left turning position to the right turning position and then back to the left turning position in the transverse groove 310, completing a complete reciprocating motion cycle.

[0088] Step S2: When the bearing 420 moves to the left turning position of the transverse channel 310, the outer periphery of the bearing 420 abuts against the top spherical surface of the ball contact 610 of the left transmission arm 600, pushing the left transmission arm 600 to move downward. The left transmission arm 600 drives the handle of the cutter 500 to swing to the left through the hinge joint 630, so that the cutter 500 performs left swing cutting.

[0089] At the same time, the first drive cylinder 110 outputs a first downward pressure (its stroke is L1, which applies a first-level active downward pressure compensation to the cutter 500. Specifically, the piston rod of the first drive cylinder 110 extends downward from the initial position by a stroke of L1, driving the second carrier plate 200 to slide downward along the first parallel slide rail 120, causing the third carrier plate 300 and the cutter 500 mounted on it to move downward by a distance of L1 as a whole, so that the cutter 500 cuts into the sprue material with a larger downward pressure while swinging to the left, thus achieving left-swing cutting.

[0090] Step S3: As the bearing 420 moves from the left turning position to the right turning position in a counterclockwise direction, the bearing 420 gradually disengages from the ball contact 610 of the left transmission arm 600. Under the elastic restoring force of the spring 640, the left transmission arm 600 returns to its original position, and the left swing action of the cutter 500 is released.

[0091] At this time, since the cutter 500 is mounted on the third carrier plate 300 which slides on the second parallel slide rail 210 which is set in an oblique direction, when the third carrier plate 300 slides along the oblique guide rail, the horizontal component of the cutter 500 keeps it in a rightward lateral pressing posture. The blade of the cutter 500 continues to contact the material and continues to cut in a lateral sliding manner until it reaches the midpoint M of the transverse channel 310.

[0092] During this process, the first drive cylinder 110 maintains the output of the first downward pressure, keeping the cutter 500 in a downward pressure state.

[0093] Step S4: As the cutter 500 continues to move to the right from the midpoint M, it gradually approaches the right drive arm 600 to prepare for the right swing cut. The cutter 500 begins to rise.

[0094] During this process, the first drive cylinder 110 continues to output a second downward pressure (its stroke is L2, L2 < L1), applying secondary downward pressure compensation to the cutter 500. The second downward pressure L2 is at least sufficient to counteract the lifting tendency of the cutter 500 caused by sliding along the second parallel slide 210, that is, the second downward pressure L2 should be equal to or slightly greater than the lifting amount ΔH, so that the cutter 500 can still maintain contact with the material after being lifted.

[0095] Step S5: When the bearing 420 reaches the right turn position, the outer periphery of the bearing 420 abuts against the top spherical surface of the ball contact 610 of the right drive arm 600, pushing the right drive arm 600 to move downward. The right drive arm 600 drives the handle of the cutter 500 to swing to the right through the hinge joint 630, and the cutter 500 performs right swing cutting.

[0096] At this time, the first drive cylinder 110 continues to output with the second downward pressure L2 to counteract the lifting of the cutter 500 caused by the inclined guide rail, ensuring that the right-swing cutter has sufficient cutting depth.

[0097] Step S6: As the bearing 420 moves from the right turning position to the left turning position in a counterclockwise direction, the bearing 420 gradually disengages from the ball contact 610 of the right transmission arm 600. The right transmission arm 600 returns to its original position under the action of the spring 640, and the right swing action of the cutter 500 is released.

[0098] Similarly, due to the oblique constraint of the second parallel slide 210, the horizontal component of the cutter 500 keeps it in a leftward lateral downward pressing posture to continue cutting until it returns to the midpoint position M of the transverse channel 310.

[0099] During this process, the first drive cylinder 110 continues to output a third downward pressure, with a stroke of L3 (L3 = L2), to apply three-stage downward pressure compensation to the cutter 500. This third downward pressure is also sufficient to at least counteract the lifting trend of the cutter 500 caused by sliding along the second parallel slide 210.

[0100] Step S7: When the cylinder reaches the midpoint M, the first drive cylinder 110 is reset to the initial position (i.e., the piston rod is fully retracted, the stroke is 0, the cutter 500 is raised and leaves the material surface, in preparation for entering the next cycle).

[0101] The bearing 420 continues to move counterclockwise to the left turning position, and the first drive cylinder 110 outputs the first downward pressure L1 again, entering the next cycle.

[0102] Through the cyclic execution of steps S1 to S7 above, the continuous compensation swing cutting method achieves the following: actively press down to cut at the left turning position, maintain cutting laterally from the left turning position to the midpoint position, lift the blade to transition and compensate from the midpoint position to the right turning position, compensate and cut at the right turning position, compensate to the midpoint position and maintain cutting laterally at the right turning position, reset the midpoint position and prepare for the next cycle, and so on.

[0103] Optimal relationships for each downward pressure: In this embodiment, the first pressing amount L1, the second pressing amount L2, and the third pressing amount L3 satisfy the following relationship: L1 > L2 = L3; that is, the first-level pressing compensation for the left-turn position is the largest (active pressing and cutting), while the second- and third-level pressing compensations are smaller and equal (only used to counteract the lifting trend and maintain contact). In other embodiments, the second pressing amount L2 and the third pressing amount L3 can also be set to slightly different values ​​according to the actual cutting process requirements. For example, when the lifting trend of the right-turn position is greater than that of the left-turn position, L3 can be set to be slightly larger than L2, but both should be less than L1.

[0104] This invention overcomes the problems of incomplete cutting, short tool life, and high energy consumption inherent in traditional vertical downward pressure cutting methods through three-stage downward pressure compensation. The first stage of compensation actively applies maximum downward pressure when the cutter is in the left-turning position, ensuring sufficient shearing energy for the cutter to cut into the sprue material at the swing initiation point, avoiding tensile deformation caused by insufficient initial cutting force. The second stage of compensation continuously outputs a smaller downward pressure during the latter half of the cutter's movement from the left-turning position to the right-turning position, precisely counteracting the upward tendency caused by the cutter sliding along the obliquely set second parallel slide. This ensures that the cutter remains in contact with the material throughout the left-right swing switching process and continues cutting through lateral sliding, thus replacing the traditional vertical pulling and cutting with a lateral shearing mechanism. This fundamentally eliminates the adhesion formed by plastic stretching of the sprue material during the critical cutting stage. The third stage of compensation... The first half of the return stroke maintains the same low downward pressure, allowing the cutter to continue its leftward lateral downward pressure posture during the return stroke to complete the secondary trimming and cutting of the sprue, ensuring a complete and thorough cut. Simultaneously, the three-level compensation mechanism allows the cutter's edge to dynamically change its entry position and angle with the cutter base during each cut, avoiding the rapid dulling or chipping of the cutting edge caused by prolonged concentrated impact loads in localized areas during traditional vertical downward cutting. This effectively extends the cutter's lifespan. This three-level compensation mechanism eliminates the need for the cutter to complete the full, long vertical stroke required for traditional vertical downward cutting. Instead, it integrates into the entire cycle of the oblique cut, achieving effective cutting through only small-stroke compensation during the oscillation process. This significantly reduces energy consumption per cut, thus achieving a breakthrough improvement over traditional technical solutions in three dimensions: cutting quality, tool life, and energy consumption.

[0105] The above embodiments are not intended to limit the present invention, and the present invention is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the technical solutions of the present invention are also within the protection scope of the present invention.

Claims

1. A continuous swing cutting module, characterized in that: include: A first carrier plate is set in a fixed position. The back of the first carrier plate has a first driving cylinder and a first parallel slide rail arranged vertically. A swing cutting window is opened downward in the middle of the first carrier plate. A second carrier plate is reciprocatingly slidably on the parallel slide rail. The second carrier plate is connected to the piston rod of the first drive cylinder. The front of the second carrier plate has a second parallel slide rail arranged obliquely. A first drive motor is arranged on the second carrier plate. The first drive motor is connected to a bearing through an eccentric shaft extending into the swing cutting window. A third carrier plate is reciprocatingly slidably on the second parallel slide rail. A transverse groove is provided on the third carrier plate. The bearing is embedded in the transverse groove and reciprocates within the transverse groove. A cutter that can continuously swing with the eccentric movement of the bearing is installed on the third carrier plate.

2. The continuous oscillating cutting module according to claim 1, characterized in that: The cutter has two symmetrically hinged transmission arms on its handle. The two transmission arms are elastically set in the limiting channel opened vertically on the third carrier plate. The limiting channel is connected to the transverse channel. The upper edges of the two transmission arms form transmission contacts protruding from the bottom wall of the transverse channel. The two transmission contacts are correspondingly set at the left and right turning positions of the bearing reciprocating in the transverse channel.

3. The continuous oscillating cutting module according to claim 2, characterized in that: The transmission arm includes an upper spherical contact, a middle connecting rod, and a lower hinge joint; the connecting rod is fitted with a spring, the upper end of the spring abuts against the lower part of the spherical contact, the lower end of the spring abuts against a stop plate installed on the lower edge of the third carrier plate, and the connecting rod passes through a through hole in the stop plate.

4. The continuous oscillating cutting module according to claim 2, characterized in that: The top spherical surface of the spherical contact extends through the bottom wall of the transverse channel, and the top spherical surface forms a transmission contact for rolling contact with the bearing.

5. The continuous oscillating cutting module according to any one of claims 1-4, characterized in that: It also includes a cutter base fixedly mounted below the swivel cutting window by a support frame, wherein the cutter base has a groove for the cutter to extend into; the top surface of the cutter base located on both sides of the groove is flush with or lower than the bearing plane of the material to be cut.

6. An energy-saving cutting machine, comprising a frame, characterized in that: The frame is provided with a continuous swing cutting module as described in any one of claims 1-5, and the first carrier plate is connected to the frame; The frame is also equipped with a load-bearing module; The load-bearing module includes: The fourth carrier plate is horizontally raised by two L-shaped support plates on the symmetrical position of the bottom surface; The fifth carrier plate is vertically reciprocated by a second drive cylinder mounted on the fourth carrier plate, and the second drive cylinder is movably inserted through a through hole in the fourth carrier plate. The sixth carrier plate is set to rotate horizontally by a second drive motor that is vertically mounted on the fifth carrier plate. Several suction cups are set on the top surface of the sixth carrier plate.

7. The energy-saving cutting machine according to claim 6, characterized in that: Several third drive cylinders are vertically arranged on the fourth carrier plate; each third drive cylinder is connected to a lifting column, and several lifting columns are distributed around the fifth and sixth carrier plates. The maximum lifting height of the lifting end of the lifting column is higher than the top of the suction cup.

8. The energy-saving cutting machine according to claim 6 or 7, characterized in that: The frame is also equipped with a belt conveyor module; The belt conveyor module includes: A set of support plates symmetrically arranged on both sides of the frame, each of which is rotatably equipped with a conveyor belt; A drive shaft is connected between the rollers of the two conveyor belts, and the drive shaft is connected to a third drive motor fixedly mounted on either support plate; a linear slide rail is arranged below the conveyor belt along the conveying direction of the conveyor belt, and a slider is slidably fitted on the linear slide rail; the slider corresponds to a locking cover plate on the L-shaped support plate, and the locking cover plate presses and fixes the conveyor belt to the corresponding slider.

9. The energy-saving cutting machine according to claim 8, characterized in that: The frame is also equipped with a clamping module located downstream of the continuous swing cutting module; The clamping module includes a fourth drive cylinder connected to the frame, two sets of symmetrically arranged transverse slides, and grippers respectively set on each transverse slide; the fourth drive cylinder is vertically arranged and connected to the two sets of transverse slides.

10. A continuous compensation swing cutting method for a continuous swing cutting module, characterized in that: The No. 1 drive motor rotates continuously in a counterclockwise direction, driving the eccentric shaft to cause the bearing to reciprocate in the transverse channel. When the bearing moves to the left turning position of the transverse channel, the cutter performs left swing cutting, and at the same time the first drive cylinder outputs the first downward pressure to apply a first-level downward pressure compensation to the cutter. As the bearing moves from the left turning position to the right turning position in a counterclockwise direction, the left swing action of the cutter is released, and the cutter continues to cut while maintaining a rightward lateral downward pressing posture until it reaches the midpoint of the transverse channel; as the cutter continues to move to the right turning position from the midpoint, the cutter is raised, and the first drive cylinder continues to output a second downward pressing amount to apply a second-level downward pressing compensation to the cutter. The second downward pressing amount is at least sufficient to counteract the lifting trend of the cutter caused by sliding along the second parallel slide. When the bearing reaches the right turning position, the cutter performs a right swing cut; As the bearing moves from the right turning position to the left turning position in a counterclockwise direction, the right swing action of the cutter is released, and the first drive cylinder continues to output a third downward pressure, applying three levels of downward pressure compensation to the cutter; the third downward pressure is at least sufficient to counteract the lifting trend of the cutter caused by sliding along the second parallel slide, so that the cutter maintains a leftward lateral downward pressure posture to continue cutting until it returns to the midpoint position of the lateral channel. When the midpoint position is reached, the first drive cylinder resets to the initial position; When the bearing gradually reaches the left turning position, the first drive cylinder outputs the first downward pressure and enters the next cycle.

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