Swing driving arm, centering log transfer device and rotary cutter

Abstract

The utility model provides a swing driving arm, a centering log transfer device and a rotary cutter, and belongs to the technical field of log machining devices. The swing driving arm comprises an oil cylinder main body, a control device, a fixed seat and a valve control system, and the oil cylinder main body is hinged to the fixed seat; the valve control system is used for controlling the action of the oil cylinder main body and is controlled by the control device; the centering log transfer device adopts the swing driving arm to control the clamping arm device to swing; the rotary cutter adopts the centering log transfer device to transfer logs; the swing driving arm replaces the movement of a nut seat along a swing screw rod in the prior art through the extension and retraction of the oil cylinder main body; due to the fact that the stretching speed of the output end of the oil cylinder body is the same as the linear speed of the position, connected with the oil cylinder body, of the rotating frame, compared with a swing lead screw, the oil cylinder body can completely transmit the lifted speed to the rotating frame after being accelerated, the maximum swing speed of the clamping arm device can be increased conveniently, and the transfer efficiency of logs is improved. The rotary cutter can also improve the machining efficiency by increasing the transfer speed of the logs.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of log processing devices, and more particularly to a swing driving arm, a centering log transfer device and a rotary cutting machine. BACKGROUND

[0002] In the production of veneer for plywood, the axis of the log section needs to be found, i.e., the centering points on both sides of the log section are found, and then the centering points are clamped for cutting. In the centering process, the tonnage heavy and large-diameter logs are usually lifted to the rotary cutting machine by manual operation of the lifting device for round finding, centering and rotary cutting. The round finding and centering time before rotary cutting results in low efficiency of veneer rotary cutting, and the manual operation deviation is large, and the qualified rate is low.

[0003] Based on the above problems, the applicant applied for a utility model patent with publication number CN215920790U, and the patent name is an automatic centering log transfer device. In this scheme, the control device instructs the synchronous servo motor to act, the synchronous servo motor drives the swing synchronous shaft to rotate, the swing synchronous shaft drives the small bevel gears at both ends to rotate, the large bevel gear drives the swing lead screw to rotate, the swing lead screw drives the nut seat to move axially along the swing lead screw, the displacement of the nut seat drives the rotating sleeve to rotate around the axis of the swing synchronous shaft as the axis, and the rotating sleeve drives the synchronous beam to swing around the shaft as the axis through the rotating frame, thereby driving the clamping arm devices at both ends of the swing synchronous shaft to swing, realizing the alignment, clamping and transfer of the logs.

[0004] However, in actual use, due to the characteristics of the lead screw transmission, the rotation speed of the surface of the swing lead screw is greater than the speed of the nut seat moving along the swing lead screw. In order to make the clamping arm device swing at a certain speed, the swing lead screw must rotate at a greater speed. If you want to improve the transfer speed of the clamping arm device, you need to increase the rotation speed of the swing lead screw at a faster speed, which makes it difficult to improve the maximum transfer speed of the clamping arm device to the logs, and the transfer efficiency of the logs is low. SUMMARY

[0005] To solve the problems of the prior art, the utility model provides a swing driving arm, a centering log transfer device and a rotary cutting machine, which can improve the transfer speed of the clamping arm device to the logs and improve the transfer efficiency of the logs in the rotary cutting process.

[0006] To achieve the above object, the technical scheme of the present application provides a swing driving arm, comprising a cylinder main body, a control device, a fixed seat and a valve control system, the cylinder main body has a first oil cavity and a second oil cavity, and the cylinder main body is hinged to the fixed seat; the valve control system comprises an oil tank, an oil pump, an electromagnetic overflow valve, an electro-hydraulic proportional reversing valve, a superimposed hydraulic control check valve I, a superimposed hydraulic control check valve II, a superimposed check valve I and a superimposed check valve II; the oil tank is communicated with the inlet of the electromagnetic overflow valve through the oil pump, and the outlet of the electromagnetic overflow valve is communicated to the oil tank; the electro-hydraulic proportional reversing valve has an oil inlet P1, an oil return port P2, a working oil port A0 and a working oil port B0, and the electro-hydraulic proportional reversing valve is crossed communicated to the working oil port A0 and the working oil port B0 through the action of the oil inlet P1 and the oil return port P2; the oil tank is communicated with the oil inlet P1 through the oil pump, and the oil return port P2 is communicated with the oil tank; the outlet of the superimposed hydraulic control check valve I is communicated with the first oil cavity through the superimposed check valve I, and the outlet of the superimposed hydraulic control check valve II is communicated with the second oil cavity through the superimposed check valve II; the working oil port A0 is communicated with a first passage, and the working oil port B0 is communicated with a second passage; the inlet of the superimposed hydraulic control check valve I and the inlet of the superimposed hydraulic control check valve II are parallel communicated to the first passage, and the inlet of the superimposed hydraulic control check valve I and the inlet of the superimposed hydraulic control check valve II are parallel communicated to the second passage; the oil pump and the electro-hydraulic proportional reversing valve are connected with the control device.

[0007] The control device is used for controlling the action of the oil pump and the electro-hydraulic proportional reversing valve, and the control device can adopt a common control device such as a PLC controller. The oil in the oil tank is charged and discharged in the first oil cavity and the second oil cavity through the action of the oil pump and the electro-hydraulic proportional reversing valve, so as to control the extension and contraction of the cylinder main body. Since the cylinder main body is hinged to the fixed seat, the cylinder main body itself can also compensate the position through swinging. The swing driving arm is used for driving the swinging of the clamping arm device in the centering log transfer device. Compared with the rotation of the swinging screw rod to drive the swinging of the clamping arm device, the speed ratio of the output end of the cylinder main body to the clamping arm device is smaller, which is more convenient for the speed-up of the clamping arm device, so as to improve the transfer efficiency of the logs.

[0008] Optionally, the electro-hydraulic proportional reversing valve further comprises a balance valve position, when the electro-hydraulic proportional reversing valve is in the balance valve position, the oil return port P2 is simultaneously communicated to the working oil port A0 and the working oil port B0, and the oil inlet P1 is in a blocked state. When the electro-hydraulic proportional reversing valve is in the balance valve position, the first oil cavity and the second oil cavity in the cylinder main body are pressure balanced, the output end position of the cylinder main body is stationary, and when applied in the centering log transfer device, the clamping arm device can stay at any position, so as to clamp and put down the logs or stay at the middle position.

[0009] Optionally, the valve control system further comprises an air-cooled oil cooler, the outlet of the electromagnetic overflow valve and the oil return port P2 are both communicated with the inlet of the air-cooled oil cooler, and the outlet of the air-cooled oil cooler is communicated with the oil tank. When the oil overflows from the electromagnetic overflow valve or flows back from the oil cylinder body, the oil flows back to the oil tank through the air-cooled oil cooler. Because the oil may be heated due to pressure flow rate and other reasons during the flow process, the air-cooled oil cooler can be used to cool the heated oil to avoid overheating of the system.

[0010] Optionally, the valve control system further comprises a tubular check valve arranged in parallel with the air-cooled oil cooler, the outlet of the electromagnetic overflow valve and the oil return port P2 are both communicated with the inlet of the tubular check valve, and the outlet of the tubular check valve is communicated with the oil tank. When the air-cooled oil cooler receives an instant increase in flow, it may cause the oil return branch to be pressurized, at which time the increased pressure opens the parallel tubular check valve to relieve pressure, protecting the system and preventing the oil return branch pressure from rising to cause other system components to malfunction, and also protecting the air-cooled oil cooler.

[0011] Optionally, the valve control system further comprises a plate check valve, and the oil pump is communicated with the oil inlet port P1 through the plate check valve to avoid the oil flowing back to the oil pump from the oil inlet port P1.

[0012] Optionally, a plurality of oil cylinder bodies are arranged in parallel, the first oil chambers of the plurality of oil cylinder bodies are connected in parallel to the superimposed check valve I, and the second oil chambers of the plurality of oil cylinder bodies are connected in parallel to the superimposed check valve II. The plurality of oil cylinder bodies act synchronously to drive the clamping arm device to ensure force balance.

[0013] Optionally, the valve control system further comprises a pressure gauge I, a pressure gauge switch I, a pressure gauge II and a pressure gauge switch II, the pressure gauge I is connected between the superimposed check valve I and the first oil chamber through the pressure gauge switch I, and the pressure gauge II is connected between the superimposed check valve II and the second oil chamber through the pressure gauge switch II. The pressure gauges I and II are used to detect the pressure in the first and second oil chambers. The pressure gauge switch I is used to control the communication between the pressure gauge I and the first oil chamber, and the pressure gauge switch II is used to control the communication between the pressure gauge II and the second oil chamber. After the pressure gauge switch I or the pressure gauge switch II is closed, the pressure gauge I or the pressure gauge II can be easily replaced.

[0014] Optionally, the oil tank is provided with an air filter and a liquid level and temperature gauge, and an oil suction filter is connected between the oil pump and the oil tank. The air filter can prevent impurities from entering the oil tank and ensure the quality of the oil. The liquid level and temperature gauge is used to detect the liquid level and temperature information in the oil tank. The oil suction filter is used to filter the oil entering the oil pump.

[0015] The application discloses a centering log transfer device, which comprises a support frame, a synchronous beam, a support shaft, a rotating frame, a clamping arm device, a distance synchronous adjusting device, a connecting frame, a log clamping signal switch and a swing driving arm shown in any one of the above.

[0016] The application discloses a rotary cutting machine, which comprises an automatic log centering device, a numerical control non-clamping shaft rotary cutting device and the centering log transfer device.

[0017] The application has the beneficial effects that:

[0018] The swing driving arm is driven to swing by the extension and retraction of the oil cylinder body, so that the clamping arm device is moved back and forth, and the log is clamped and transferred. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the accompanying drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the accompanying drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0020] Figure 1 Structure diagram of the log centering and transferring device when the clamping arm device swings to the left side;

[0021] Figure 2 Structure diagram of the log centering and transferring device when the clamping arm device swings to the middle position;

[0022] Figure 3 Structure diagram of the log centering and transferring device when the clamping arm device swings to the right side;

[0023] Figure 4 Structure diagram of the swing driving arm from the top;

[0024] Figure 5 Structure diagram of the valve control system;

[0025] Figure 6 Structure diagram of the rotary cutting machine when the clamping arm device swings to the log automatic centering device;

[0026] Figure 7 Structure diagram of the rotary cutting machine when the clamping arm device swings to the middle position;

[0027] Figure 8 Structure diagram of the rotary cutting machine when the clamping arm device swings to the numerical control non-chucking shaft rotary cutting device.

[0028] Legend: 101, cylinder main body; 102, fixed seat; 103, first oil cavity; 104, second oil cavity; 105, oil tank; 106, oil pump; 107, electromagnetic overflow valve; 108, electro-hydraulic proportional reversing valve; 109, superimposed hydraulic control check valve I; 110, superimposed hydraulic control check valve II; 111, superimposed check valve I; 112, superimposed check valve II; 113, first passage; 114, second passage; 115, balance valve position; 116, air-cooled oil cooler; 117, tubular check valve; 118, plate check valve; 119, pressure gauge I; 120, pressure gauge switch I; 121, pressure gauge II; 122, pressure gauge switch II; 123, oil suction and filtration device; 201, support frame; 202, synchronous beam; 203, support shaft; 204, rotating frame; 205, clamping arm device; 3, log automatic centering device; 301, fine centering device; 4, numerical control non-chucking shaft rotary cutting device; 401, single roller device; 402, double roller device. DETAILED DESCRIPTION

[0029] In order to make the technical problems, technical solutions and beneficial effects to be solved in the present application clearer, the present application will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not to limit the present application.

[0030] Embodiment 1:

[0031] The present embodiment provides a swing driving arm for driving the swing of the clamping arm device 205 in the centering log transfer device to transfer the log by the clamping arm device 205. Based on the Figures 1 to 5As shown, the swing driving arm includes a cylinder body 101, a control device, a fixed seat 102 and a valve control system. The cylinder body 101 has a first oil cavity 103 and a second oil cavity 104, and is hinged to the fixed seat 102. The valve control system includes an oil tank 105, an oil pump 106, an electromagnetic overflow valve 107, an electro-hydraulic proportional reversing valve 108, a superimposed hydraulic control check valve I 109, a superimposed hydraulic control check valve II 110, a superimposed one-way throttle valve I 111 and a superimposed one-way throttle valve II 112. The oil tank 105 is communicated with the inlet of the electromagnetic overflow valve 107 through the oil pump 106, and the outlet of the electromagnetic overflow valve 107 is communicated to the oil tank 105. The electromagnetic overflow valve 107 serves as a safety protection. In this embodiment, the oil pump 106 is a constant displacement vane pump with a model number of PV2R3-76, and is driven by a motor M1 with a power of 18.5Kw. The electromagnetic overflow valve 107 has a model number of BSG-06-C-2B2-D2-D5. When the system oil pressure exceeds a specified value, the electromagnetic overflow valve 107 can be used for pressure relief, so that part of the oil flows back to the oil tank 105. The electro-hydraulic proportional reversing valve 108 has an oil inlet P1, an oil return port P2, a working oil port A0 and a working oil port B0. In this embodiment, the electro-hydraulic proportional reversing valve 108 has a model number of 4WRHZE16W6-150-7XJG24N9ETK31F1, and has an oil inlet P1, an oil return port P2, a working oil port A0 and a working oil port B0. Through the action of the electro-hydraulic proportional reversing valve 108, the oil inlet P1 and the oil return port P2 can be cross communicated to the working oil port A0 and the working oil port B0. The oil tank 105 is communicated with the oil inlet P1 through the oil pump 106, and the oil return port P2 is communicated with the oil tank 105. The outlet of the superimposed hydraulic control check valve I 109 is communicated with the first oil cavity 103 through the superimposed one-way throttle valve I 111, and the outlet of the superimposed hydraulic control check valve II 110 is communicated with the second oil cavity 104 through the superimposed one-way throttle valve II 112. In this embodiment, the superimposed hydraulic control check valve I 109 and the superimposed hydraulic control check valve II 110 are both superimposed hydraulic control check valves with a model number of MPW-04, and the superimposed one-way throttle valve I 111 and the superimposed one-way throttle valve II 112 are both superimposed one-way throttle valves with a model number of MSW-04-X. The working oil port A0 is communicated with a first passage 113, and the working oil port B0 is communicated with a second passage 114. The inlet of the superimposed hydraulic control check valve I 109 and the inlet of the superimposed hydraulic control check valve II 110 are parallel communicated to the first passage 113 and the second passage 114, respectively. The oil pump 106 and the electro-hydraulic proportional reversing valve 108 are connected with the control device. The control device is used to control the actions of the oil pump 106 and the electro-hydraulic proportional reversing valve 108, and can be a common control device such as a PLC controller.It should be noted that although the superimposed hydraulic control check valve 109 and the superimposed hydraulic control check valve 110 are named check valves, and the superimposed check throttle valve 111 and the superimposed check throttle valve 112 are named check throttle valves, for the above-mentioned type, the valve itself has an internal control branch, and when powered, any branch can pass through the pressure oil, and the other branch hydraulic lock can also be opened, realizing the oil forward and reverse flow.

[0032] In use, the control device controls the electro-hydraulic proportional reversing valve 108 to act, so that the oil inlet P1 is communicated with the working oil port B0 and the oil return port P2 is communicated with the working oil port A0. At this time, the oil pump 106 pumps the oil in the oil tank 105, and the oil enters the first oil chamber 103 in turn through the oil inlet P1, the working oil port B0, the superimposed hydraulic control check valve 109 and the superimposed check throttle valve 111. At the same time, the oil in the second oil chamber 104 returns to the oil tank 105 from the superimposed check throttle valve 112, the superimposed hydraulic control check valve 110, the working oil port A0 and the oil return port P2, realizing the extension of the output end of the oil cylinder body 101. The control device controls the electro-hydraulic proportional reversing valve 108 to act, so that the oil inlet P1 is communicated with the working oil port A0 and the oil return port P2 is communicated with the working oil port B0. At this time, the oil pump 106 pumps the oil in the oil tank 105, and the oil enters the second oil chamber 104 in turn through the oil inlet P1, the working oil port A0, the superimposed hydraulic control check valve 110 and the superimposed check throttle valve 112. At the same time, the oil in the first oil chamber 103 returns to the oil tank 105 from the superimposed check throttle valve 111, the superimposed hydraulic control check valve 109, the working oil port B0 and the oil return port P2, realizing the contraction of the output end of the oil cylinder body 101. Through the above steps, the extension and contraction control of the output end of the oil cylinder body 101 can be realized. Since the oil cylinder body 101 is hinged to the fixed seat 102, the oil cylinder body 101 itself can also compensate the position by swinging. The swinging driving arm is used to drive the swinging of the clamping arm device 205 in the centering log transfer device. Compared with rotating the clamping arm device 205 by swinging the screw rod, the transmission ratio of the speed of the output end of the oil cylinder body 101 to the clamping arm device 205 is smaller, which is more convenient for speeding up the clamping arm device 205, thereby improving the transfer efficiency of the logs.

[0033] Further, the electro-hydraulic proportional reversing valve 108 further comprises a balance valve position 115. Specifically, for the electro-hydraulic proportional reversing valve 108 of the above-mentioned type 4WRHZE16W6-150-7XJG24N9ETK31F1, it has a balance valve position 115. Based on the above-mentioned type 4WRHZE16W6-150-7XJG24N9ETK31F1, the electro-hydraulic proportional reversing valve 108 has a balance valve position 115. Figure 5As shown, when the electro-hydraulic proportional reversing valve 108 is actuated to the balance valve position 115, the return port P2 is simultaneously communicated to the working oil port A0 and the working oil port B0, and the inlet port P1 is in a blocked state. When the electro-hydraulic proportional reversing valve 108 is at the balance valve position 115, the first oil chamber 103 and the second oil chamber 104 in the cylinder body 101 are communicated with each other, the pressure is balanced, and the output end position of the cylinder body 101 can be kept stationary. When applied in the centering log transfer device, the clamping arm device 205 can be stopped at any position, so that the clamping arm device 205 can pick up and drop the log or stop at the middle position.

[0034] Further, based on Figure 5 As shown, the valve control system further comprises an air-cooled oil cooler 116, the outlet of the electromagnetic overflow valve 107 and the return port P2 are both communicated to the inlet of the air-cooled oil cooler 116, and the outlet of the air-cooled oil cooler 116 is communicated to the oil tank 105. When the oil overflows from the electromagnetic overflow valve 107 or flows back from the cylinder body 101, the oil flows back to the oil tank 105 through the air-cooled oil cooler 116. Since the oil may be heated due to pressure, flow rate, etc. during the flow process, the air-cooled oil cooler 116 can be used to cool the heated oil to avoid overheating of the system.

[0035] Preferably, based on Figure 5 As shown, the valve control system further comprises a tubular check valve 117 arranged in parallel with the air-cooled oil cooler 116, the outlet of the electromagnetic overflow valve 107 and the return port P2 are both communicated to the inlet of the tubular check valve 117, and the outlet of the tubular check valve 117 is communicated to the oil tank 105. When the air-cooled oil cooler 116 receives an instant increase in flow, it may cause the return oil branch to be pressurized, at which time the increased pressure opens the parallel tubular check valve 117 to relieve pressure, protecting the system and preventing the return oil branch pressure from rising to cause other elements of the system to malfunction. At the same time, it can also protect the air-cooled oil cooler 116.

[0036] Further, based on Figure 5 As shown, the valve control system further comprises a plate check valve 118, and the oil pump 106 is communicated to the inlet port P1 through the plate check valve 118 to avoid the oil flowing back to the oil pump 106 from the inlet port P1.

[0037] Further, based on Figure 4 and Figure 5As shown, the oil cylinder body 101 is provided in parallel with several. The number of several is at least two. In the embodiment, the number of oil cylinder body 101 is two, of course, according to the actual length of the support can also be designed to have three or four, etc. The first oil cavity 103 of the several oil cylinder body 101 is connected to the superimposed check valve I 111 in parallel with each other, and the second oil cavity 104 of the several oil cylinder body 101 is connected to the superimposed check valve II 112 in parallel with each other. The several oil cylinder body 101 can act synchronously to drive the clamping arm device 205 together to ensure the force balance of the clamping arm device 205.

[0038] Further, based on Figure 5 As shown, the valve control system further comprises a pressure gauge I 119, a pressure gauge switch I 120, a pressure gauge II 121 and a pressure gauge switch II 122, the pressure gauge I 119 is connected between the superimposed check valve I 111 and the first oil cavity 103 through the pressure gauge switch I 120, and the pressure gauge II 121 is connected between the superimposed check valve II 112 and the second oil cavity 104 through the pressure gauge switch II 122. The pressure gauge I 119 and the pressure gauge II 121 are used to detect the pressure in the first oil cavity 103 and the second oil cavity 104 respectively. The pressure gauge switch I 120 is used to control the communication and closing of the pressure gauge I 119 and the first oil cavity 103, and the pressure gauge switch II 122 is used to control the communication and closing of the pressure gauge II 121 and the second oil cavity 104. After closing the pressure gauge switch I 120 or the pressure gauge switch II 122, the pressure gauge I 119 or the pressure gauge II 121 can be replaced conveniently.

[0039] Further, the oil tank 105 is provided with an air filter and a liquid level and temperature gauge (not shown in the figure), and the oil pump 106 is connected with the oil tank 105 through an oil suction filter 123. The air filter can prevent impurities from entering the oil tank 105 and ensure the oil quality. The liquid level and temperature gauge is used to detect the liquid level and temperature information in the oil tank 105. The oil suction filter 123 is used to filter the oil entering the oil pump 106. In the embodiment, the oil suction filter 123 is of SFN-12 type, which is used to ensure the oil quality.

[0040] Embodiment 2:

[0041] The embodiment provides a centering log transfer device, based on Figures 1 to 3As shown, the output end of the oil cylinder body 101 is hinged to the rotating frame 204, and the support frame 201, the synchronous beam 202, the support shaft 203, the rotating frame 204, the clamping arm device 205, the distance synchronous adjustment device, the connecting frame, the log clamping signal switch, and the swing driving arm shown in Embodiment 1 are the same as the components with the same names in the utility model patent with the publication number CN215920790U and the name of the centering log automatic transfer device, and the connection modes therebetween are the same, and will not be described again. The technical solution of the present embodiment is to change the synchronous rotating device in the disclosed patent to the swing driving arm in the embodiment.

[0042] In use, the oil cylinder body 101 on the swing driving arm drives the rotating frame 204 to reciprocate along the support shaft 203 through extension and retraction, realizes the reciprocating movement of the clamping arm device 205, and transfers the logs after clamping the logs. The extension and retraction speed of the output end of the oil cylinder body 101 is the same as the linear speed of the connection between the oil cylinder body 101 and the rotating frame 204. Compared with the lead screw, the oil cylinder body 101 can completely transmit the lifting speed to the rotating frame 204 after speed-up, which is convenient for improving the maximum swing speed of the clamping arm device 205 and improving the transfer efficiency of the logs.

[0043] Embodiment 3:

[0044] The present embodiment provides a rotary cutting machine, which is based on Figures 6 to 8 As shown, the centering log transfer device is located between the automatic centering log device 3 and the numerical control non-clamping shaft rotary cutting device 4; the support frame 201 is fixedly connected with the racks of the automatic centering log device 3 and the numerical control non-clamping shaft rotary cutting device 4, and the fixed seat 102 is fixedly connected with the rack of the automatic centering log device 3; the automatic centering log device 3 has a fine centering device 301, the numerical control non-clamping shaft rotary cutting device 4 has a single roller device 401 and a double roller device 402, the clamping arm device 205 can be swingingly aligned to the fine centering device 301, and the clamping arm device 205 can be swingingly aligned between the single roller device 401 and the double roller device 402.

[0045] The original wood automatic centering device 3 adopts the technical solution disclosed in the utility model patent with the publication number CN215920791U and the name of original wood automatic centering device 3 applied by the applicant, the rack thereof is the frame structure for overall support composed of the stand column and the top beam in the scheme, and the fine centering device 301 is the same device in the scheme. The numerical control non-clamping shaft rotary cutting device 4 adopts the technical solution disclosed in the invention patent with the publication number CN111098375B and the name of numerical control non-clamping shaft rotary cutting device 4 applied by the applicant, the rack thereof is the machine base in the scheme, and the single roller device 401 and the double roller device 402 are the same devices in the scheme. The original wood automatic centering device 3 is used for centering and positioning the original wood, the centering original wood transfer device is used for transferring the centered original wood to the numerical control non-clamping shaft rotary cutting device 4, and the numerical control non-clamping shaft rotary cutting device 4 is used for rotary cutting processing of the original wood.

[0046] In use, the original wood is centered and positioned by the fine centering device 301. After the original wood is centered and positioned by the original wood automatic centering device 3, the oil cylinder main body 101 of the centering original wood transfer device drives the clamping arm device 205 to swing to the fine centering device 301 and clamps the original wood, and then the oil cylinder main body 101 drives the clamping arm device 205 to swing to the numerical control non-clamping shaft rotary cutting device 4, and the single roller device 401 and the double roller device 402 clamp the original wood, and the original wood is rotary cut in the numerical control non-clamping shaft rotary cutting device 4. Since the transfer speed of the clamping arm device 205 of the centering original wood transfer device to the original wood can be greatly improved by swinging the driving arm, the processing speed of the rotary cutting machine to the original wood is improved, and the processing efficiency is improved.

[0047] Based on Figures 5 to 8 As shown in the figure, the use process of the rotary cutting machine of the embodiment is as follows:

[0048] After the log is centered by the fine centering device 301, the control device controls the electro-hydraulic proportional reversing valve 108 to act, so that the oil inlet P1 communicates with the working oil port B0 and the oil return port P2 communicates with the working oil port A0. At this time, the oil pump 106 pumps the oil in the oil tank 105, and the oil enters the first oil chamber 103 through the oil inlet P1, the working oil port B0, the superimposed hydraulic control check valve I 109 and the superimposed check valve I 111 in turn. At the same time, the oil in the second oil chamber 104 returns to the oil tank 105 through the superimposed check valve II 112, the superimposed hydraulic control check valve II 110, the working oil port A0 and the oil return port P2, so as to realize the extension of the output end of the oil cylinder body 101. The output end of the oil cylinder body 101 drives the trolley 204, the synchronous beam 202 and the clamping arm device 205 to rotate along the support shaft 203, so that the clamping arm device 205 is aligned to the fine centering device 301. Subsequently, the control device controls the electro-hydraulic proportional reversing valve 108 to act to the balance valve position 115, so that the pressure of the first oil chamber 103 and the second oil chamber 104 is balanced, and the output end of the oil cylinder body 101 no longer acts. At this time, the clamping arm device 205 can clamp the log from the fine centering device 301. After the log is clamped by the clamping arm device 205, the control device controls the electro-hydraulic proportional reversing valve 108 to act, so that the oil inlet P1 communicates with the working oil port A0 and the oil return port P2 communicates with the working oil port B0. At this time, the oil pump 106 pumps the oil in the oil tank 105, and the oil enters the second oil chamber 104 through the oil inlet P1, the working oil port A0, the superimposed hydraulic control check valve II 110 and the superimposed check valve II 112 in turn. At the same time, the oil in the first oil chamber 103 returns to the oil tank 105 through the superimposed check valve I 111, the superimposed hydraulic control check valve I 109, the working oil port B0 and the oil return port P2, so as to realize the contraction of the output end of the oil cylinder body 101. The output end of the oil cylinder body 101 drives the trolley 204, the synchronous beam 202 and the clamping arm device 205 to rotate along the support shaft 203, so that the clamping arm device 205 is aligned between the single-roller device 401 and the double-roller device 402. Subsequently, the control device controls the electro-hydraulic proportional reversing valve 108 to act to the balance valve position 115, so that the pressure of the first oil chamber 103 and the second oil chamber 104 is balanced, and the output end of the oil cylinder body 101 no longer acts. At this time, the clamping arm device 205 can place the log to the numerical control non-clamping shaft rotary cutting device 4, and the numerical control non-clamping shaft rotary cutting device 4 performs rotary cutting processing on the log. During the transfer process, the electro-hydraulic proportional reversing valve 108 can be actuated to the balance valve position 115 at any time to realize the hovering waiting at the intermediate position.

[0049] The above only describes the preferred embodiments of the present application and is not used to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An oscillating drive arm characterized by: The hydraulic cylinder comprises a hydraulic cylinder body (101), a control device, a fixed seat (102) and a valve control system, the hydraulic cylinder body (101) has a first oil cavity (103) and a second oil cavity (104) therein, and the hydraulic cylinder body (101) is hinged to the fixed seat (102); The valve control system comprises an oil tank (105), an oil pump (106), an electromagnetic overflow valve (107), an electro-hydraulic proportional reversing valve (108), a superimposed hydraulic control check valve I (109), a superimposed hydraulic control check valve II (110), a superimposed check valve I (111) and a superimposed check valve II (112); the oil tank (105) is communicated with the inlet of the electromagnetic overflow valve (107) through the oil pump (106), and the outlet of the electromagnetic overflow valve (107) is communicated to the oil tank (105); the electro-hydraulic proportional reversing valve (108) has an oil inlet P1, an oil return port P2, a working oil port A0 and a working oil port B0, and the electro-hydraulic proportional reversing valve (108) is crossed communicated to the working oil port A0 and the working oil port B0 through the oil inlet P1 and the oil return port P2 by action; the oil tank (105) is communicated with the oil inlet P1 through the oil pump (106), and the oil return port P2 is communicated with the oil tank (105); the outlet of the superimposed hydraulic control check valve I (109) is communicated with the first oil cavity (103) through the superimposed check valve I (111), and the outlet of the superimposed hydraulic control check valve II (110) is communicated with the second oil cavity (104) through the superimposed check valve II (112); the working oil port A0 is communicated with a first passage (113), and the working oil port B0 is communicated with a second passage (114); the inlet of the superimposed hydraulic control check valve I (109) and the inlet of the superimposed hydraulic control check valve II (110) are communicated to the first passage (113) and the second passage (114) in parallel with each other, and the oil pump (106) and the electro-hydraulic proportional reversing valve (108) are connected with the control device.

2. The swing drive arm of claim 1, wherein: The electro-hydraulic proportional reversing valve (108) further comprises a balance valve position (115), when the electro-hydraulic proportional reversing valve (108) is actuated to the balance valve position (115), the oil return port P2 is simultaneously communicated to the working oil port A0 and the working oil port B0, and the oil inlet P1 is in a blocked state.

3. A swing drive arm as claimed in claim 1 or 2, characterised in that: The valve control system further comprises an air-cooled oil cooler (116), the outlet of the electromagnetic overflow valve (107) and the oil return port P2 are both communicated to the inlet of the air-cooled oil cooler (116), and the outlet of the air-cooled oil cooler (116) is communicated to the oil tank (105).

4. The swing drive arm of claim 3, wherein: The valve control system further comprises a pipe check valve (117) arranged in parallel with the air-cooled oil cooler (116), the outlet of the electromagnetic overflow valve (107) and the oil return port P2 are both communicated with the inlet of the pipe check valve (117), and the outlet of the pipe check valve (117) is communicated to the oil tank (105).

5. The swing drive arm of claim 1 or 2, wherein: The valve control system further comprises a plate check valve (118), and the oil pump (106) is communicated with the oil inlet port P1 through the plate check valve (118).

6. The swing drive arm of claim 1 or 2, wherein: A plurality of oil cylinder bodies (101) are arranged in parallel, the first oil cavities (103) of the plurality of oil cylinder bodies (101) are communicated to the superimposed check valve I (111) in parallel, and the second oil cavities (104) of the plurality of oil cylinder bodies (101) are communicated to the superimposed check valve II (112) in parallel.

7. The swing drive arm of claim 1 or 2, wherein: The valve control system further comprises a pressure gauge I (119), a pressure gauge switch I (120), a pressure gauge II (121) and a pressure gauge switch II (122), the pressure gauge I (119) is communicated between the superimposed check valve I (111) and the first oil cavity (103) through the pressure gauge switch I (120), and the pressure gauge II (121) is communicated between the superimposed check valve II (112) and the second oil cavity (104) through the pressure gauge switch II (122).

8. The swing drive arm of claim 1 or 2, wherein: An air filter and a liquid level and temperature gauge are installed on the oil tank (105), and an oil suction filter (123) is connected between the oil pump (106) and the oil tank (105).

9. A centring log transfer device, characterized by: The support frame (201), the synchronous beam (202), the support shaft (203), the rotating frame (204), the clamping arm device (205), the interval synchronous adjusting device, the connecting frame, the log clamping signal switch and the swing driving arm as claimed in any one of claims 1-8 are arranged in sequence, and the output end of the oil cylinder body (101) is hingedly connected to the rotating frame (204).

10. A rotary cutter characterized by: The log automatic centering device (3), the numerical control non-clamping shaft rotary cutting device (4) and the centering log transfer device as claimed in claim 9 are arranged in sequence. The support frame (201) is fixedly connected to the racks of the log automatic centering device (3) and the numerical control non-clamping shaft rotary cutting device (4), and the fixed seat (102) is fixedly connected to the rack of the log automatic centering device (3); the log automatic centering device (3) has a fine centering device (301), the numerical control non-clamping shaft rotary cutting device (4) has a single-roller device (401) and a double-roller device (402), the clamping arm device (205) can be swingingly aligned to the fine centering device (301), and the clamping arm device (205) can be swingingly aligned to between the single-roller device (401) and the double-roller device (402).

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