Automatic cutting machine for hydraulic valve pipe fittings

Abstract

The invention relates to the technical field of hydraulic valve pipe fitting cutting, in particular to an automatic hydraulic valve pipe fitting cutting machine which comprises a base, a cutting set and a conveying set are sequentially installed on the upper side of the base from left to right, a discharging unit is installed on the left side of the base, a positioning unit is installed on the discharging unit, and a straightening unit is installed at the position, corresponding to the conveying set, of the base. On the basis that the distance between the positioning plate and the cutting set is consistent with the preset cutting length of the metal hose type oil pipe, the end of the metal hose type oil pipe is attached to the right side of the positioning plate through the auxiliary positioning set, and then the distance between the end of the metal hose type oil pipe and the cutting set is consistent with the preset cutting length; in addition, the auxiliary positioning set can be matched with the material guiding plate to straighten the metal hose type oil pipe in a left-right mode, inclination or dislocation of a cutting end opening caused by elastic deformation when the metal hose type oil pipe is cut is avoided, and the cutting machining precision of the metal hose type oil pipe is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of hydraulic valve pipe fitting cutting, and specifically to an automatic cutting machine for hydraulic valve pipe fittings. Background Art

[0002] The hydraulic valve is the core control component in the hydraulic system. By adjusting the direction, pressure, and flow rate of the hydraulic oil, it drives the actuator to complete mechanical actions. The hydraulic valve pipe fitting is the key component connecting the hydraulic valve and the oil pipe. Its installation accuracy and sealing performance highly depend on the processing quality of the end of the oil pipe. Specifically, after the metal hose type oil pipe is cut, it needs to be adapted to the hydraulic valve pipe fitting through processes such as swaging and flaring to form a complete sealed flow path. Therefore, the cutting accuracy of the oil pipe is essentially one of the core technical requirements for the assembly of hydraulic valve pipe fittings.

[0003] When the existing cutting equipment cuts the metal hose type oil pipe, it usually first conveys the metal hose type oil pipe to the cutting processing position of the cutting equipment through a conveying device, and controls the conveying distance according to the cutting length of the metal hose type oil pipe, and then cuts the metal hose type oil pipe through the cutting equipment.

[0004] However, the above-mentioned cutting operation of the metal hose type oil pipe has the following problems: 1. Low cutting accuracy: The conveying accuracy error will cause the cutting accuracy of the metal hose type oil pipe to decrease. At the same time, when the metal hose type oil pipe is bent and deformed, the cutting line may deviate from the preset position, resulting in a deviation between the cutting length and the actual required length, further reducing the cutting accuracy of the metal hose type oil pipe.

[0005] 2. Low cutting quality: Due to the certain flexibility of the metal hose type oil pipe, when cutting the metal hose type oil pipe, the cutting part of the metal hose type oil pipe may be deformed first, resulting in problems such as unevenness and inclination of the cutting port, reducing the cutting quality of the metal hose type oil pipe and affecting the sealing performance of the subsequent use of the metal hose type oil pipe. Summary of the Invention

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions. An automatic cutting machine for hydraulic valve pipe fittings includes a base. A cutting group and a conveying group are sequentially installed on the upper side of the base from left to right. A blanking unit is installed on the left side of the base. A positioning unit is installed on the blanking unit. A straightening unit is installed on the base at the position corresponding to the conveying group.

[0007] The blanking unit includes a mounting seat installed on the left side of the base. A guiding plate is installed on the upper side of the mounting seat through a driving group. An inverted trapezoidal guiding channel is opened on the upper side of the guiding plate. The driving group is used to drive the left end of the guiding plate to incline downward to achieve automatic blanking.

[0008] The positioning unit includes a top plate fixedly installed on the upper side of the mounting seat through a connecting rod, an inverted trapezoidal positioning plate is installed on the lower side of the top plate through an adjustment group, the positioning plate is arranged in the material guide channel, and an auxiliary positioning group is also installed on the lower side of the top plate. The auxiliary positioning group first makes the left end of the oil pipe fit with the positioning plate and then fixes the oil pipe. The driving group is also used to drive the material guide plate and the auxiliary positioning group to cooperate to straighten the oil pipe left and right.

[0009] The straightening unit includes a pressurizing group installed on a base, on which two arc-shaped clamping plates arranged symmetrically up and down are installed through a synchronization group. A linkage group is connected between the auxiliary positioning group and the base. The linkage group and the pressurizing group cooperate to straighten the oil pipe. A protection group for protecting and supporting the cut section of the oil pipe is installed on the base.

[0010] Preferably, the auxiliary positioning group includes a transmission frame installed on the lower side of the top plate through a plurality of telescopic rods, an electric push rod is also connected between the transmission frame and the top plate, a clamping plate is installed in the transmission frame for sliding left and right through a return spring, and a V-shaped groove with an opening facing downward is opened on the lower side of the clamping plate.

[0011] Preferably, a plurality of clamping plates evenly distributed left and right are arranged below the two inclined surfaces of the V-shaped groove, and the two clamping plates distributed front and back are arranged inclined upward on the opposite sides, and the upper sides of the clamping plates are connected to the clamping plates by elastic top extension rods and sliding up and down, and the lower sides of the clamping plates are provided with clearance grooves corresponding to the positions of the clamping plates.

[0012] Preferably, an L-shaped toggle plate is fixedly installed on the right side of the upper end of the clamping plate, and an L-shaped matching plate is fixedly installed on the lower side of the top plate corresponding to the position of the toggle plate, and the left side of the horizontal section of the matching plate is set as a trapezoidal structure matching the horizontal section of the toggle plate.

[0013] Preferably, a through groove penetrating the V-shaped groove is opened in the middle of the clamping plate, and the adjustment group includes an adjustment plate slidably installed left and right in the middle of the lower side of the top plate, an adjustment screw is threadedly connected to the adjustment plate, and the adjustment screw and the top plate are rotatably connected, a connecting plate is fixedly installed at the lower end of the adjustment plate, and the lower end of the connecting plate passes through the through groove and is fixedly connected to the positioning plate.

[0014] Preferably, the pressurizing group includes a transmission plate which is slidably installed on the upper side of the base and located in front of the conveying group, a pressure spring is connected between the right side of the transmission plate and the base, the synchronization group includes two L-shaped rods which are symmetrically arranged up and down and slidably installed on the rear side of the transmission plate, a synchronization part is commonly installed between the two L-shaped rods and the transmission plate, the opposite sides of the vertical sections of the two L-shaped rods are fixedly connected to their corresponding arc-shaped clamping plates, and a plurality of arc-shaped and evenly arranged rubber blocks are fixedly installed on the inner arc surface of the arc-shaped clamping plate.

[0015] Preferably, a column block is fixedly installed in the middle of the front side of the transmission plate, the linkage group includes a telescopic column fixedly installed on the upper side of the base and located in front of the transmission plate, an L-shaped transmission rod is fixedly installed between the left side of the telescopic end of the telescopic column and the transmission frame, and a push plate is fixedly installed at the position of the column block on the rear side of the telescopic end of the telescopic column, and the left end of the push plate is arranged to tilt upward.

[0016] Preferably, the driving group includes a U-shaped frame distributed above the mounting seat, the guide plate is installed in the U-shaped frame by sliding left and right through an electric slider assembly, a clearance block is installed at the left end of the lower side of the U-shaped frame for sliding left and right, an electric push rod 2 is hinged at the lower end of the clearance block, and the lower end of the electric push rod 2 is fixedly connected to the mounting seat, a fixing rod is hinged at the right end of the lower side of the U-shaped frame, and the lower end of the fixing rod is fixedly connected to the mounting seat.

[0017] Preferably, a mounting hole is provided on the right side of the middle part of the material guide plate, a rotating shaft is rotatably installed on the left sides of the front and rear inner walls of the mounting hole, a material stripping plate is fixedly installed on the right part of the rotating shaft, a through hole is provided on the lower side of the U-shaped frame at a position corresponding to the mounting hole, a top extension plate is fixedly installed on the upper side of the mounting seat, the upper side of the top extension plate passes through the through hole and is in contact with the lower end surface of the material stripping plate, and a plurality of rotating rods evenly arranged on the left and right are rotatably installed on the two inclined surfaces of the material guide channel.

[0018] Preferably, the protection group includes a protection plate distributed above the base and located between the cutting group and the guide plate. The protection plate is configured as an annular structure with an opening, and the lower end of the protection plate is fixedly connected to the base via a connecting rod.

[0019] The beneficial effects of the present invention are: 1. On the basis of the distance between the positioning plate and the cutting group being consistent with the preset cutting length of the metal hose-like oil pipe, the present invention uses the auxiliary positioning group to make the end of the metal hose-like oil pipe fit with the right side of the positioning plate, thereby making the distance between the end of the metal hose-like oil pipe and the cutting group consistent with the preset cutting length, thereby ensuring the cutting processing accuracy of the metal hose-like oil pipe, and the auxiliary positioning group can also cooperate with the guide plate to straighten the metal hose-like oil pipe left and right, thereby avoiding tilt or misalignment of the cutting port due to elastic deformation during cutting of the metal hose-like oil pipe, thereby improving the cutting processing accuracy of the metal hose-like oil pipe.

[0020] 2. The present invention clamps and fixes the metal hose-like oil pipe in the material guide channel through an auxiliary positioning group, and straightens the metal hose-like oil pipe by setting a straightening unit, so that the metal hose-like oil pipe is always in a straightened state, avoiding problems such as unevenness and tilting of the cutting port due to elastic deformation, ensuring the cutting quality of the metal hose-like oil pipe, and thus ensuring the sealing of the metal hose-like oil pipe in subsequent use.

[0021] 3. When the auxiliary positioning group makes the end of the metal hose-like oil pipe fit with the right side of the positioning plate, the present invention pulls the metal hose-like oil pipe to the left through the linkage group and the pressurizing group to ensure that the end of the metal hose-like oil pipe can fit smoothly and tightly with the right side of the positioning plate, thereby ensuring the cutting processing accuracy of the metal hose-like oil pipe.

[0022] 4. The present invention protects the cutting position of the metal hose type oil pipe by setting a protection group to prevent the metal hose type oil pipe located on the left side of the cutting position from tilting forward under the action of the cutting force, further ensuring that the cutting port of the metal hose type oil pipe remains flat, thereby further improving the cutting processing quality of the metal hose type oil pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0024] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0025] Figure 2 yes Figure 1 A schematic diagram of the structure from another perspective.

[0026] Figure 3 It is a structural schematic diagram of the adjustment group, the auxiliary positioning group, the material guide plate and the positioning plate of the present invention.

[0027] Figure 4 It is a schematic diagram of the top view of the material guide plate, the rotating shaft, the material shifting plate and the rotating rod of the present invention.

[0028] Figure 5 It is a structural schematic diagram of the positioning plate, the return spring, the connecting plate and the abutting plate of the present invention.

[0029] Figure 6 It is a structural schematic diagram of the abutting plate, the elastic extending rod and the giving way groove of the present invention.

[0030] Figure 7 It is a schematic structural diagram of the cutting group and the conveying group of the present invention.

[0031] Figure 8 It is a structural schematic diagram of the arc-shaped clamping plate, columnar block, push plate and transmission rod of the present invention.

[0032] Figure numerals: 1, base; 11, cutting group; 12, conveying group; 13, protection group; 131, protection plate; 132, connecting rod; 2, unloading unit; 21, mounting seat; 211, top extension plate; 22, driving group; 221, U-shaped frame; 222, electric slider assembly; 223, clearance block; 224, electric push rod 2; 225, fixing rod; 23, guide plate; 231, rotating shaft; 232, material removal plate; 233, rotating rod; 3, positioning unit; 31, connecting rod; 32, top plate; 321, matching plate; 33, adjustment group; 331, adjustment plate; 332, adjustment screw; 333 , connecting plate; 34, positioning plate; 35, auxiliary positioning group; 351, telescopic rod; 352, transmission frame; 353, electric push rod 1; 354, clamping plate; 355, reset spring; 356, clamping plate; 357, elastic top extension rod; 358, clearance groove; 359, toggle plate; 36, linkage group; 361, telescopic column; 362, transmission rod; 363, push plate; 4, straightening unit; 41, pressurizing group; 411, transmission plate; 412, pressurizing spring; 413, columnar block; 42, synchronization group; 421, L-shaped rod; 422, synchronization member; 43, arc clamping plate; 431, rubber block. DETAILED DESCRIPTION

[0033] The embodiments described below are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. If no specific techniques or conditions are specified in the embodiments, the techniques or conditions described in the literature in the art or the product instructions shall be followed.

[0034] See also Figure 1 , Figure 2 and Figure 7 A hydraulic valve pipe automatic cutting machine includes a base 1, a cutting group 11 and a conveying group 12 are installed on the upper side of the base 1 from left to right, a feeding unit 2 is installed on the left side of the base 1, a positioning unit 3 is installed on the feeding unit 2, and a straightening unit 4 is installed at the position of the base 1 corresponding to the conveying group 12.

[0035] It should be noted that the cutting group 11 and the conveying group 12 both adopt existing technologies. The conveying group 12 adopts multiple groups of guide wheels to intermittently convey the metal hose type oil pipe, and the cutting group 11 is used to cut the metal hose type oil pipe.

[0036] The present invention is used for continuous cutting processing of oil pipes such as metal hoses. The present invention can accurately position the end of the oil pipe of the metal hose type, straighten the oil pipe of the metal hose type, ensure the cutting processing accuracy of the oil pipe of the metal hose type. At the same time, the present invention can also straighten the oil pipe of the metal hose type, prevent the cutting part of the oil pipe of the metal hose type from deforming first during cutting, and further prevent problems such as unevenness and inclination that may occur at the port of the oil pipe after cutting, ensure the cutting quality of the oil pipe of the metal hose type, and thus improve the sealing performance of the subsequent use of the oil pipe of the metal hose type.

[0037] Specifically, first, manually pass the end of the oil pipe of the metal hose type through the conveying group 12 and the cutting group 11 in sequence, and start the conveying group 12 to intermittently convey the oil pipe of the metal hose type to the left for a certain distance, so that the end of the oil pipe of the metal hose type moves to the blanking unit 2 after passing through the cutting group 11. Then start the positioning unit 3 to accurately position the end of the oil pipe of the metal hose type, so that the distance between the end of the oil pipe of the metal hose type and the cutting position of the cutting group 11 is the same as the preset cutting length. At the same time, the positioning unit 3 can also cooperate with the blanking unit 2 to straighten the oil pipe of the metal hose type. Then the positioning unit 3 and the blanking unit 2 clamp and fix the oil pipe. At the same time, the straightening unit 4 elastically stretches the oil pipe of the metal hose type to the right, so that the oil pipe of the metal hose type is in a straightened state. Finally, control the cutting group 11 to cut the oil pipe of the metal hose type to achieve precise cutting processing of the oil pipe of the metal hose type. When the cutting processing of the oil pipe of the metal hose type is completed, control the blanking unit 2 to blank the cut oil pipe of the metal hose type. Then start the conveying group 12 to convey the oil pipe of the metal hose type to the left, and repeat the above steps to achieve continuous cutting processing of the oil pipe of the metal hose type.

[0038] Refer to Figure 1 、 Figure 2 and Figure 3 As shown in, the blanking unit 2 includes a mounting seat 21 installed on the left side of the base 1. The upper side of the mounting seat 21 is provided with a guide plate 23 through a driving group 22. The upper side of the guide plate 23 is provided with an inverted trapezoidal guide channel. The driving group 22 is used to drive the left end of the guide plate 23 to tilt downward to achieve blanking of the oil pipe.

[0039] Refer to Figure 1 、 Figure 2 and Figure 3 As shown in, the positioning unit 3 includes a top plate 32 fixedly installed on the upper side of the mounting seat 21 through a connecting rod 31. The lower side of the top plate 32 is provided with an inverted trapezoidal positioning plate 34 through an adjusting group 33. The positioning plate 34 is arranged in the guide channel. The lower side of the top plate 32 is also provided with an auxiliary positioning group 35. The auxiliary positioning group 35 is used to fix the oil pipe of the metal hose type after the left end of the oil pipe is attached to the positioning plate 34. The driving group 22 is also used to drive the guide plate 23 and the auxiliary positioning group 35 to cooperate to straighten the oil pipe of the metal hose type left and right.

[0040] The blanking unit 2 is used to blank the cut metal hose type oil pipes, and the positioning unit 3 is used to accurately position the ends of the metal hose type oil pipes. The positioning unit 3 is also used to cooperate with the blanking unit 2 to straighten the oil pipes left and right. Specifically, first, control the adjustment group 33 to adjust the left and right positions of the positioning plate 34 so that the distance between the positioning plate 34 and the cutting position of the cutting group 11 is the same as the cutting length of the metal hose type oil pipes. When the conveying group 12 is started to intermittently convey the metal hose type oil pipes to the left for a certain distance, the end of the metal hose type oil pipe moves into the guiding channel of the guiding plate 23 and moves along the guiding channel close to the positioning plate 34.

[0041] Then control the auxiliary positioning group 35 to make the end of the metal hose type oil pipe fit against the right side of the positioning plate 34, so that the distance between the end of the metal hose type oil pipe and the cutting position of the cutting group 11 is the same as the preset cutting length, ensuring the precise cutting process of the metal hose type oil pipes. At the same time, by controlling the driving group 22 to drive the guiding plate 23 to reciprocate left and right, the guiding plate 23 and the auxiliary positioning group 35 cooperate to straighten the oil pipes left and right, further ensuring the precise cutting process of the metal hose type oil pipes. Then the auxiliary positioning group 35 fixes the metal hose type oil pipes in the guiding channel.

[0042] When the cutting process of the metal hose type oil pipes is completed, control the driving group 22 to drive the left end of the guiding plate 23 to tilt downward, so that the cut metal hose type oil pipes slide left along the guiding channel, realizing the blanking of the metal hose type oil pipes. When the cut metal hose type oil pipes are removed from the guiding channel, control the driving group 22 to drive the guiding plate 23 to return to the horizontal state and repeat the above operations to realize the continuous and precise cutting process of the metal hose type oil pipes.

[0043] Refer to Figure 3 、 Figure 5 and Figure 6 As shown in, the adjustment group 33 includes an adjustment plate 331 slidably installed left and right in the middle of the lower side of the top plate 32. An adjustment screw 332 is threadedly connected to the adjustment plate 331, and the adjustment screw 332 is rotatably connected to the top plate 32. A connecting plate 333 is fixedly installed at the lower end of the adjustment plate 331, and the lower end of the connecting plate 333 is fixedly connected to the positioning plate 34. Among them, an inclined reinforcing plate is fixedly installed between the adjustment plate 331 and the connecting plate 333 to increase the structural stability between the adjustment plate 331 and the connecting plate 333.

[0044] The adjustment group 33 is used to adjust the left and right positions of the positioning plate 34. Specifically, by manually screwing the adjustment screw 332, the adjustment screw 332 drives the adjustment plate 331 to move left and right through threaded cooperation, so that the adjustment plate 331 drives the positioning plate 34 to move left and right through the connecting plate 333, thereby realizing the adjustment of the left and right positions of the positioning plate 34.

[0045] Refer to Figure 1 、Figure 2 , Figure 3 and Figure 5 The auxiliary positioning group 35 includes a transmission frame 352 installed on the lower side of the top plate 32 through a plurality of telescopic rods 351. The transmission frame 352 is located above the guide plate 23. An electric push rod 353 is also connected between the transmission frame 352 and the top plate 32. A clamping plate 354 is installed in the transmission frame 352 for sliding left and right through a return spring 355. A V-shaped groove is opened on the lower side of the clamping plate 354, and the V-shaped groove opens downward. A through groove penetrating the V-shaped groove is opened in the middle of the clamping plate 354, and the lower end of the connecting plate 333 passes through the through groove.

[0046] See also Figure 5 and Figure 6 A plurality of locking plates 356 evenly distributed left and right are arranged below the two inclined surfaces of the V-shaped groove, and the two locking plates 356 distributed front and back are arranged to tilt upward on opposite sides, and the upper sides of the locking plates 356 are connected to the clamping plates 354 for vertical sliding connection through elastic lifting rods 357, and the lower sides of the clamping plates 354 are provided with clearance grooves 358 at positions corresponding to the locking plates 356; wherein the elastic lifting rods 357 have a relatively small elastic force, so that the locking plates 356 will not cause the metal hose-like oil pipes to be squeezed and deformed under the action of the elastic lifting rods 357.

[0047] See also Figure 3 and Figure 5 An L-shaped toggle plate 359 is fixedly installed on the right side of the upper end of the clamping plate 354, and an L-shaped matching plate 321 is fixedly installed on the lower side of the top plate 32 corresponding to the position of the toggle plate 359. The left side of the horizontal section of the matching plate 321 is set as a trapezoidal structure that matches the horizontal section of the toggle plate 359.

[0048] See also Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 6The auxiliary positioning group 35 is used to make the end of the metal hose oil pipe fit with the positioning plate 34 and then fix the oil pipe; specifically, by starting the electric push rod 353 to drive the transmission frame 352 to move downward, the transmission frame 352 moves vertically downward under the action of multiple telescopic rods 351, and the transmission frame 352 drives the clamping plate 354 to move downward synchronously, and the clamping plate 354 drives the clamping plate 356 to move downward through the elastic push rod 357. When the clamping plate 356 contacts the upper side of the metal hose oil pipe and the clamping plate 354 continues to move downward, the elastic push rod 357 is compressed, so that the clamping plate 356 elastically presses against the upper side of the metal hose oil pipe, and at the same time, the clamping plate 354 drives the toggle plate 3 The horizontal section 59 moves to contact the inclined surface of the trapezoidal structure of the matching plate 321 and continues to move downward, so that the horizontal section of the toggle plate 359 and the inclined surface of the trapezoidal structure of the matching plate 321 cooperate to drive the clamping plate 354 to move to the left and compress the reset spring 355. The clamping plate 354 drives the clamping plate 356 to move to the left through the elastic top extension rod 357. Multiple clamping plates 356 push the metal hose oil pipe to move to the left, so that the end of the metal hose oil pipe and the right side of the positioning plate 34 fit tightly, thereby realizing precise positioning of the end of the metal hose oil pipe, making the distance between the end of the metal hose oil pipe and the cutting position of the cutting group 11 consistent with the preset cutting length, thereby ensuring the cutting accuracy of the metal hose oil pipe.

[0049] When the end of the metal hose-like oil pipe is tightly fitted with the right side of the positioning plate 34, the clamping plate 356 is elastically clamped to the upper side of the metal hose-like oil pipe under the action of the elastic push rod 357, and the end of the metal hose-like oil pipe cannot move to the left due to the blocking effect of the positioning plate 34. When the clamping plate 356 continues to move to the left, the clamping plate 356 can move to the left relative to the metal hose-like oil pipe.

[0050] When the clamping plate 354 moves downward so that the V-shaped groove is clamped on the upper side of the metal hose oil pipe, the clamping plate 356 moves to the clearance groove 358, and the V-shaped groove of the clamping plate 354 clamps the metal hose oil pipe and fixes it in the material guide channel. When the cutting of the metal hose oil pipe is completed, the electric push rod 353 is controlled to drive the transmission frame 352 to move upward to the initial position, and the clamping plate 354 moves to the initial position under the action of the rebound force of the reset spring 355, and the clamping plate 356 moves to the initial position under the action of the rebound force of the elastic extension rod 357.

[0051] See also Figure 1 , Figure 2 , Figure 3 and Figure 4The driving group 22 includes a U-shaped frame 221 distributed above the mounting seat 21. The material guide plate 23 is installed in the U-shaped frame 221 by sliding left and right through the electric slider assembly 222. A clearance block 223 is installed at the left end of the lower side of the U-shaped frame 221 for sliding left and right. The lower end of the clearance block 223 is hinged with an electric push rod 224, and the lower end of the electric push rod 224 is fixedly connected to the mounting seat 21. A fixing rod 225 is hinged at the right end of the lower side of the U-shaped frame 221, and the lower end of the fixing rod 225 is fixedly connected to the mounting seat 21. A plurality of rotating rods 233 evenly arranged left and right are rotatably installed on the two inclined surfaces of the material guide channel.

[0052] The driving group 22 is used to drive the material guide plate 23 to unload the cut metal hose-like oil pipe. The driving group 22 is also used to drive the material guide plate 23 and the clamping plate 356 to cooperate to straighten the metal hose-like oil pipe left and right. Specifically, when the metal hose-like oil pipe moves in the material guide channel, the friction between the metal hose-like oil pipe and the material guide channel is reduced by rotating the rod 233, thereby increasing the smoothness of the metal hose-like oil pipe when moving. When the clamping plate 356 elastically presses against the upper side of the metal hose-like oil pipe, the electric slider assembly 222 is started to drive the material guide plate 23 to reciprocate left and right, so that the material guide plate 23 and the clamping plate 356 cooperate to straighten the metal hose-like oil pipe left and right, thereby ensuring the metal hose The cutting accuracy of the tubular oil pipe is improved. When the cutting of the metal hose oil pipe is completed, the electric push rod 224 is controlled to move downward through the clearance block 223. The clearance block 223 drives the left end of the U-shaped frame 221 to rotate downward with the hinge of the U-shaped frame 221 and the fixed rod 225 as the reference. The U-shaped frame 221 drives the left end of the guide plate 23 to be arranged downwardly tilted, so that the cut metal hose oil pipe moves to the left along the guide channel under the action of gravity, thereby realizing the unloading of the metal hose oil pipe. After unloading is completed, the electric push rod 224 is controlled to drive the guide plate 23 to rotate to a horizontal position (at this time, the electric push rod 224 is at the maximum extension point).

[0053] See also Figure 3 and Figure 4 A mounting hole is provided on the right middle part of the material guide plate 23, and a rotating shaft 231 is rotatably installed on the left sides of the front and rear inner walls of the mounting hole, and a torsion spring (not shown in the figure) is connected between the rotating shaft 231 and the material guide plate 23, and a material shifting plate 232 is fixedly installed on the right part of the rotating shaft 231, and a through hole is provided on the lower side of the U-shaped frame 221 at a position corresponding to the mounting hole, and a top extension plate 211 is fixedly installed on the upper side of the mounting seat 21, and the upper side of the top extension plate 211 passes through the through hole and is in contact with the lower end surface of the material shifting plate 232.

[0054] When the U-shaped frame 221 drives the left end of the material guiding plate 23 to rotate downward, under the pushing action of the top extension plate 211, the right end of the material pushing plate 232 rotates upward with the axis of the rotating shaft 231 as the reference, increasing the height of the right end of the metal hose type oil pipe after cutting by the material pushing plate 232, thereby increasing the inclination degree of the metal hose type oil pipe, enabling the metal hose type oil pipe to move out of the material guiding plate 23 faster under the action of gravity, increasing the blanking efficiency of the metal hose type oil pipe, and further increasing the cutting efficiency of the metal hose type oil pipe. When the material guiding plate 23 rotates to the horizontal position, the rotating shaft 231 drives the material pushing plate 232 to rotate to the initial position under the action of the torsion spring.

[0055] Refer to Figure 1 , Figure 2 , Figure 7 and Figure 8 As shown in FIGS. ,

[0055] , Figure 1 , Figure 2 , Figure 7 , Figure 8 , the straightening unit 4 includes a pressurizing group 41 installed on the base 1. Two symmetrically arranged arc-shaped clamping plates 43 are installed on the pressurizing group 41 through a synchronization group 42. A linkage group 36 is connected between the transmission frame 352 and the base 1. The linkage group 36 is used to cooperate with the pressurizing group 41 to straighten the metal hose type oil pipe. A protection group 13 for ensuring the flatness of the cutting part of the metal hose type oil pipe is installed on the base 1. A plurality of rubber blocks 431 are fixedly installed on the inner arc surface of the arc-shaped clamping plate 43 and are evenly arranged in an arc shape.

[0056] The straightening unit 4 is used to straighten the metal hose type oil pipe. Specifically, when the end of the metal hose type oil pipe moves to the corresponding position of the positioning plate 34, the synchronization group 42 is controlled to drive the two arc-shaped clamping plates 43 to clamp the metal hose type oil pipe. The rubber blocks 431 ensure that the two arc-shaped clamping plates 43 stably clamp the metal hose type oil pipe. When the transmission frame 352 moves downward and the clamping plate 354 clamps and fixes the metal hose type oil pipe in the material guiding channel, the transmission frame 352 drives the linkage group 36 and the pressurizing group 41 to cooperate to straighten the metal hose type oil pipe. When the cutting group 11 cuts the metal hose type oil pipe, the metal hose type oil pipe is always in a straightened state, preventing the cutting part of the metal hose type oil pipe from deforming first, and further preventing problems such as unevenness and inclination that may occur at the port of the cut metal hose type oil pipe, ensuring the cutting quality of the metal hose type oil pipe. At the same time, the protection group 13 can further ensure the flatness of the cutting part of the metal hose type oil pipe and improve the cutting quality of the metal hose type oil pipe. After the cutting process of the metal hose type oil pipe is completed, the synchronization group 42 is controlled to drive the two arc-shaped clamping plates 43 to release the metal hose type oil pipe.

[0057] Refer to Figure 1 , Figure 2 , Figure 7 and Figure 8, the pressurizing group 41 includes a transmission plate 411 that is slidably mounted left and right on the upper side of the base 1 and is located in front of the conveying group 12. A pressurizing spring 412 is connected between the right side of the transmission plate 411 and the base 1. The synchronization group 42 includes two L-shaped rods 421 that are symmetrically arranged up and down and are slidably mounted up and down on the rear side of the transmission plate 411. A synchronization member 422 is jointly installed between the two L-shaped rods 421 and the transmission plate 411. The opposite sides of the vertical sections of the two L-shaped rods 421 are fixedly connected to the corresponding arc-shaped clamping plates 43.

[0058] Refer to Figure 1 , Figure 2 , Figure 3 , Figure 7 and Figure 8 , a cylindrical block 413 is fixedly installed in the middle of the front side of the transmission plate 411. The linkage group 36 includes a telescopic column 361 that is fixedly installed on the upper side of the base 1 and is located in front of the transmission plate 411. A L-shaped transmission rod 362 is jointly fixedly installed between the left side of the telescopic end of the telescopic column 361 and the transmission frame 352. A push plate 363 is fixedly installed at the rear side of the telescopic end of the telescopic column 361 at a position corresponding to the cylindrical block 413. The left end of the push plate 363 is arranged obliquely upward; a reinforcing rib for increasing its strength is fixedly installed at the corner of the transmission rod 362.

[0059] It should be noted that the synchronization member 422 in the present invention includes a synchronization screw. Two thread segments that are arranged up and down and have opposite helix directions are provided on the synchronization screw. Both L-shaped rods 421 are connected to the corresponding thread segments by means of thread fitting, and the synchronization screw is rotatably connected to the transmission plate 411. The upper end of the synchronization screw rotatably penetrates through the transmission plate 411 and is fixedly connected to the output shaft of the motor fixedly installed on the transmission plate 411. By starting the motor to drive the synchronization screw to rotate, the synchronization screw drives the two L-shaped rods 421 to move in and out synchronously.

[0060] The pressurizing group 41 is used to cooperate with the linkage group 36 to straighten the metal hose type oil pipe. Specifically, when the end of the metal hose type oil pipe moves to the corresponding position of the positioning plate 34, the control synchronizer 422 drives the two arc-shaped clamping plates 43 to clamp the metal hose type oil pipe through the L-shaped rod 421. When the transmission frame 352 moves downward, the transmission frame 352 drives the telescopic end of the telescopic column 361 to move downward through the transmission rod 362. The telescopic end of the telescopic column 361 drives the push plate 363 to move downward. The inclined lower side of the push plate 363 cooperates with the cylindrical block 413 to push the transmission plate 411 to move leftward. The transmission plate 411 drives the two arc-shaped clamping plates 43 to pull the metal hose type oil pipe leftward through the L-shaped rod 421. And during this process, the pressing plate 356 elastically presses against the upper side of the metal hose type oil pipe in the material guiding channel and pushes the metal hose type oil pipe to move leftward. Under the combined action of the leftward pulling of the arc-shaped clamping plate 43 and the leftward pushing of the pressing plate 356, the metal hose type oil pipe smoothly and closely fits against the right side of the positioning plate 34. After the end of the metal hose type oil pipe closely fits against the right side of the positioning plate 34, when the transmission frame 352 continues to move downward and the clamping plate 354 clamps and fixes the metal hose type oil pipe in the material guiding channel, although the two arc-shaped clamping plates 43 will continue to pull the metal hose type oil pipe leftward, but because the end of the metal hose type oil pipe closely fits against the right side of the positioning plate 34 and no longer moves, at this time, the metal hose type oil pipe between the leftmost set of guide wheels in the conveying group 12 and the two arc-shaped clamping plates 43 will bend slightly, and the metal hose type oil pipe in the material guiding channel will not bend under the pressing action of multiple pressing plates 356.

[0061] When the clamping plate 354 clamps and fixes the metal hose type oil pipe in the material guiding channel, at this time, the telescopic end of the telescopic column 361 drives the push plate 363 to move to the lower limit position, and the push plate 363 separates from the cylindrical block 413, so that the transmission plate 411 drives the two arc-shaped clamping plates 43 to move rightward and reset under the action of the pressurizing spring 412, but will not reset to the initial position and the pressurizing spring 412 is still in a stretched state. Since the arc-shaped clamping plate 43 still fixedly clamps the metal hose type oil pipe, the arc-shaped clamping plate 43 is in a static state relative to the part of the metal hose type oil pipe it clamps. Under the resilience of the pressurizing spring 412, the arc-shaped clamping plate 43 first straightens the bent part of the metal hose type oil pipe between the leftmost set of guide wheels in the conveying group 12 and the two arc-shaped clamping plates 43 to the right, and then straightens the metal hose type oil pipe to the left of the leftmost set of guide wheels in the conveying group 12 to the right, so that the section of the metal hose type oil pipe to be cut is in a straightened state. The straightened state is beneficial to eliminating the bending stress of the metal hose type oil pipe and avoiding port inclination or dislocation caused by elastic deformation during cutting, and improving the cutting quality and precision of the metal hose type oil pipe.

[0062] After the cutting process of the metal hose type oil pipe is completed, first control the synchronizing member 422 to drive the two arc-shaped clamping plates 43 to release the metal hose type oil pipe, and then control the first electric push rod 353 to drive the transmission frame 352 to move upward to the initial position, so that the transmission frame 352 drives the telescopic end of the telescopic column 361 to move upward to the initial position through the transmission rod 362. During this period, the cylindrical block 413 drives the transmission plate 411 to move to the right under the cooperation of the inclined upper side of the push plate 363, without interfering with the reset movement of the telescopic end of the telescopic column 361. After the cylindrical block 413 is separated from the push plate 363, it will reset itself under the resilience of the compression spring 412.

[0063] Refer to Figure 7 , the protection group 13 includes a protection plate 131 distributed above the base 1 and located between the cutting group 11 and the guide plate 23. The protection plate 131 is set as an annular structure with an opening, and the lower end of the protection plate 131 is fixedly connected to the base 1 through a connecting rod 132.

[0064] It should be noted that refer to Figure 7 , the cutting group 11 adopts the prior art, which includes a bracket, a cutting tool and a driving member. The cutting tool is a circular piece with a notch and a certain thickness, and its cutting execution end is arranged at the notch of the circular piece. The bracket is fixedly installed on the base 1, and the cutting tool is rotatably connected to the bracket. A circular hole is opened at the position of the bracket corresponding to the notch of the circular piece, and the circular hole is used to support and guide the metal hose type oil pipe. The driving member is fixedly installed on the base 1 and connected to the cutting tool. When it is necessary to cut the metal hose type oil pipe, start the driving member to drive the cutting tool to rotate with its connection to the bracket as the reference, so that the cutting execution end on the notch of the cutting tool cooperates with the bracket to cut the metal hose type oil pipe.

[0065] The protection group 13 is used to ensure that the cutting part of the metal hose type oil pipe is flat; specifically, when the conveying group 12 conveys the metal hose type oil pipe to the left and the end of the metal hose type oil pipe passes through the cutting group 11 and the protection plate 131 and moves along the protection plate 131 into the guiding channel of the guide plate 23, when the cutting group 11 cuts the metal hose type oil pipe, the protection plate 131 can block the side of the metal hose type oil pipe away from the cutting group 11, preventing the metal hose type oil pipe on the left side of the cutting group 11 from bending forward under the cutting force, which is beneficial to ensuring that the cutting part of the metal hose type oil pipe remains flat and further improving the cutting quality of the metal hose type oil pipe.

[0066] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An automatic cutting machine for hydraulic valve pipe fittings, comprising a base, on the upper side of the base, a cutting group and a conveying group are sequentially installed from left to right, and it is characterized in that, A material unloading unit is installed on the left side of the base, a positioning unit is installed on the material unloading unit, and a straightening unit is installed on the base at a position corresponding to the conveying group; The unloading unit comprises a mounting seat installed on the left side of the base, a material guide plate is installed on the upper side of the mounting seat through a driving group, an inverted trapezoidal material guide channel is opened on the upper side of the material guide plate, and the driving group is used to drive the left end of the material guide plate to tilt downward to realize automatic unloading; The positioning unit comprises a top plate fixedly mounted on the upper side of the mounting seat through a connecting rod, an inverted trapezoidal positioning plate is mounted on the lower side of the top plate through an adjustment group, the positioning plate is arranged in the material guide channel, an auxiliary positioning group is also mounted on the lower side of the top plate, the auxiliary positioning group first makes the left end of the oil pipe fit with the positioning plate and then fixes the oil pipe, and the driving group is also used to drive the material guide plate and the auxiliary positioning group to cooperate to straighten the oil pipe left and right; The straightening unit includes a pressurizing group installed on a base, on which two arc-shaped clamping plates arranged symmetrically up and down are installed through a synchronization group. A linkage group is connected between the auxiliary positioning group and the base. The linkage group and the pressurizing group cooperate to straighten the oil pipe. A protection group for protecting and supporting the cut section of the oil pipe is installed on the base.

2. The automatic cutting machine for hydraulic valve pipe fittings according to claim 1, characterized in that, The auxiliary positioning group includes a transmission frame installed on the lower side of the top plate through multiple telescopic rods, an electric push rod is also connected between the transmission frame and the top plate, a clamping plate is installed in the transmission frame for sliding left and right through a return spring, and a V-shaped groove with an opening facing downward is opened on the lower side of the clamping plate.

3. The automatic cutting machine for hydraulic valve pipe fittings according to claim 2, wherein, A plurality of clamping plates evenly distributed left and right are arranged below the two inclined surfaces of the V-shaped groove, and the two clamping plates distributed front and back are arranged inclined upward on opposite sides, and the upper sides of the clamping plates are connected to the clamping plates by elastic top extension rods and sliding up and down, and the lower sides of the clamping plates are provided with clearance grooves corresponding to the positions of the clamping plates.

4. The automatic cutting machine for hydraulic valve pipe fittings according to claim 2, characterized in that, An L-shaped toggle plate is fixedly installed on the right side of the upper end of the clamping plate, and an L-shaped matching plate is fixedly installed on the lower side of the top plate corresponding to the position of the toggle plate. The left side of the horizontal section of the matching plate is set as a trapezoidal structure that matches the horizontal section of the toggle plate.

5. The automatic cutting machine for hydraulic valve pipe fittings according to claim 2, wherein A through groove penetrating the V-shaped groove is provided in the middle of the clamping plate, and the adjustment group includes an adjustment plate slidably installed left and right in the middle of the lower side of the top plate, an adjustment screw is threadedly connected to the adjustment plate, and the adjustment screw and the top plate are rotatably connected, a connecting plate is fixedly installed at the lower end of the adjustment plate, and the lower end of the connecting plate passes through the through groove and is fixedly connected to the positioning plate.

6. The automatic cutting machine for hydraulic valve pipe fittings according to claim 2, characterized in that, The pressurizing group includes a transmission plate which is slidably installed on the upper side of the base and located in front of the conveying group. A pressurizing spring is connected between the right side of the transmission plate and the base. The synchronization group includes two L-shaped rods which are symmetrically arranged up and down and slidably installed on the rear side of the transmission plate. A synchronization member is installed between the two L-shaped rods and the transmission plate. The opposite sides of the vertical sections of the two L-shaped rods are fixedly connected to the corresponding arc-shaped clamping plates, and a plurality of arc-shaped and evenly arranged rubber blocks are fixedly installed on the inner arc surface of the arc-shaped clamping plate.

7. The automatic cutting machine for hydraulic valve pipe fittings according to claim 6, wherein A columnar block is fixedly installed in the middle of the front side of the transmission plate, and the linkage group includes a telescopic column fixedly installed on the upper side of the base and located in front of the transmission plate, an L-shaped transmission rod is fixedly installed between the left side of the telescopic end of the telescopic column and the transmission frame, and a push plate is fixedly installed at the position corresponding to the columnar block on the rear side of the telescopic end of the telescopic column, and the left end of the push plate is arranged to tilt upward.

8. The automatic cutting machine for hydraulic valve pipe fittings according to claim 1, characterized in that The driving group includes a U-shaped frame distributed above the mounting seat, the guide plate is installed in the U-shaped frame by sliding left and right through an electric slider assembly, a clearance block is installed at the left end of the lower side of the U-shaped frame for sliding left and right movement, an electric push rod 2 is hinged at the lower end of the clearance block, and the lower end of the electric push rod 2 is fixedly connected to the mounting seat, a fixing rod is hinged at the right end of the lower side of the U-shaped frame, and the lower end of the fixing rod is fixedly connected to the mounting seat.

9. The automatic cutting machine for hydraulic valve pipe fittings according to claim 8, wherein, A mounting hole is provided on the right middle part of the material guide plate, and a rotating shaft is rotatably installed on the left sides of the front and rear inner walls of the mounting hole, a material shifting plate is fixedly installed on the right part of the rotating shaft, a through hole is provided on the lower side of the U-shaped frame at a position corresponding to the mounting hole, and a top extension plate is fixedly installed on the upper side of the mounting seat, the upper side of the top extension plate passes through the through hole and is in contact with the lower end surface of the material shifting plate, and a plurality of rotating rods evenly arranged on the left and right are rotatably installed on the two inclined surfaces of the material guide channel.

10. The automatic cutting machine for hydraulic valve pipe fittings according to claim 1, characterized in that, The protection group includes a protection plate distributed above the base and located between the cutting group and the material guide plate. The protection plate is configured as an annular structure with an opening, and the lower end of the protection plate is fixedly connected to the base through a connecting rod.

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