Straight tube axial feeding device

Abstract

The application discloses a straight pipe axial feeding device, which comprises a machine base, a pushing pipe assembly arranged at the front of the machine base, a feeding assembly arranged at the rear of the machine base, a pipe supporting piece arranged on the machine base and located between the feeding assembly and the pushing pipe assembly, and a first pushing pipe driver capable of driving the feeding assembly to move back and forth relative to the machine base. The feeding mechanism comprises a pushing rod, the maximum radial dimension of the pushing rod is less than or equal to the outer diameter of a small straight pipe, the front end of the pushing rod is provided with a plug capable of being inserted into the inner hole of the small straight pipe, a step capable of abutting against the end face of the small straight pipe is formed between the rear end of the plug and the outer side wall of the pushing rod, the pipe supporting piece is provided with a pipe supporting groove, the pushing pipe assembly comprises a pushing piece, a horizontal pushing driver capable of driving the pushing piece to move back and forth, and a first lifting driver capable of driving the pushing piece to move away from the moving path of the pushing rod. The application can reduce the excess material as much as possible when the axial feeding device is used to feed the pipe cutting device, and is favorable to improving the raw material utilization rate.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of straight pipe processing, and particularly relates to a straight pipe axial feeding device. BACKGROUND

[0002] In many industrial products, straight pipes are used as raw materials, such as heat exchange pipes in heat exchangers. In the production process, the long straight pipes need to be cut into appropriate lengths, and then some processing can be performed to form heat exchange pipes.

[0003] In the prior art, when cutting straight pipes, an axial feeding mode is generally adopted. A pipe clamping device is used to clamp the pipe, then one end of the straight pipe is aligned with the feeding hole of the pipe cutting mechanism, and then the straight pipe is axially pushed into the pipe cutting mechanism. In the patent with the publication number CN115921676A, the raw straight pipe is fed in this way.

[0004] This feeding mode has the following problems. Since the pipe clamping device used to clamp the straight pipe cannot be pushed into the feeding hole of the pipe cutting mechanism, the remaining material of each straight pipe will be very long. The length of this remaining material is at least the sum of the clamping length of the pipe clamping device and the length of the feeding hole, which is very wasteful and the utilization rate of raw materials is not high. SUMMARY

[0005] In view of this, the purpose of the present application is to provide a straight pipe axial feeding device that can improve the utilization rate of raw materials.

[0006] The technical scheme adopted by the present application to solve the technical problem is as follows:

[0007] A straight pipe axial feeding device, comprising a machine base, a pipe pushing assembly arranged at the front of the machine base, a feeding assembly arranged at the rear of the machine base, a pipe supporting member arranged on the machine base and located between the feeding assembly and the pipe pushing assembly, and a first pipe pushing driver capable of driving the feeding assembly to move forward and backward relative to the machine base, the feeding assembly comprising a push rod, the maximum radial dimension of the push rod being less than or equal to the outer diameter of the pipe, the front end of the push rod having a plug capable of being inserted into the inner hole of the pipe, a step capable of abutting against the end face of the pipe being formed between the rear end of the plug and the outer side wall of the push rod, the pipe supporting member being provided with a pipe supporting groove, the pipe pushing assembly comprising a pushing member and a horizontal pushing driver capable of driving the pushing member to move forward and backward, the pushing member being capable of pushing the pipe in the pipe supporting groove backward when moving backward to make the plug of the push rod inserted into the inner hole of the pipe, the pipe pushing assembly further comprising a first avoiding driver capable of driving the pushing member to move to make the pushing member capable of avoiding the area swept by the push rod when moving forward.

[0008] In a preferred scheme of the present application, the push rod is a round rod, the plug is a conical rod with gradually increasing diameter from front to back, and the outer wall of the rear end of the plug is in close contact with the inner wall of the pipe.

[0009] In a preferred scheme of the present application, a first support is fixed on the base, a first lifting seat is movably arranged on the first support, the first avoiding driver is arranged on the first support and used to drive the first lifting seat to move up and down, a third support is arranged on the first lifting seat, and the horizontal pushing driver and the pushing piece are arranged on the third support.

[0010] In a preferred scheme of the present application, a guide groove capable of guiding the pipe is further arranged on the third support, the guide groove is staggered with the pushing piece in the up-down direction, and the third support can move the guide groove to a position aligned with the push rod when the third support moves up and down.

[0011] In a preferred scheme of the present application, the pushing piece comprises a base plate movably arranged on the third support, a push plate located at the rear side of the base plate and capable of moving forward and backward relative to the base plate, and a buffer elastic member connected between the base plate and the push plate, the horizontal pushing driver is in transmission connection with the base plate to drive the base plate, the push plate and the buffer elastic member to move forward and backward together.

[0012] In a preferred scheme of the present application, a second avoiding driver capable of driving the pipe supporting member to move up and down is arranged on the base to enable the pipe supporting member to avoid the area swept by the feeding assembly when the feeding assembly moves forward.

[0013] In a preferred scheme of the present application, a second support is fixed on the base, a second lifting seat is movably arranged on the second support, the pipe supporting member is arranged on the second lifting seat, and the second avoiding driver is arranged on the second support and in transmission connection with the second lifting seat.

[0014] In a preferred scheme of the present application, the pipe supporting groove is a V-shaped groove or a U-shaped groove with the opening facing upward.

[0015] In a preferred scheme of the present application, the feeding assembly further comprises a mounting seat movably arranged on the base and a second push pipe driver arranged on the mounting seat, the push rod is movably arranged on the mounting seat and can be driven by the second push pipe driver to move forward and backward relative to the mounting seat, and the first push pipe driver is used to drive the mounting seat and the push rod to move forward and backward relative to the base.

[0016] In a preferred scheme of the present application, a sliding seat is slidably mounted on the mounting base, a support frame is fixedly arranged on the mounting base, the rear part of the push rod is fixed with the sliding seat, the front part of the push rod is slidably matched with the support frame, and the second push tube driver is in transmission connection with the sliding seat to drive the push rod to move forward and backward relative to the mounting base.

[0017] In a preferred scheme of the present application, a linear bearing is arranged on the support frame, and the support frame is slidably matched with the push rod through the linear bearing.

[0018] In a preferred scheme of the present application, a pipe clamping device capable of clamping a pipe is arranged on the mounting base, and the pipe clamping device is located in front of the pipe.

[0019] In a preferred scheme of the present application, the pipe clamping device comprises a left clamping block, a right clamping block located right to the left clamping block, a first pipe clamping driver capable of driving the left clamping block to move left and right, and a second pipe clamping driver capable of driving the right clamping block to move left and right, a first clamping groove is arranged on the right side surface of the left clamping block, a second clamping groove corresponding to the first clamping groove is arranged on the left side surface of the right clamping block, and the left clamping block and the right clamping block clamp the pipe through the first clamping groove and the second clamping groove when they are folded.

[0020] In a preferred scheme of the present application, a positioning guide pin arranged along the left-right direction is arranged on the left clamping block or the right clamping block, and a guide hole matched with the positioning guide pin is arranged on the right clamping block or the left clamping block.

[0021] The present application has the following beneficial effects:

[0022] Firstly, in the present application, the pipe pushing assembly can automatically push the pipe in the pipe holding groove backward to make the plug at the front end of the push rod inserted into the pipe, and after the ejector of the pipe pushing assembly is removed from the moving path of the push rod, the pipe can be pushed forward into the pipe cutting mechanism by the push rod to be fed, when the remaining part of the pipe is short, the push rod can be pushed into the feeding hole of the pipe cutting mechanism together with the pipe, and after the last part of the pipe is cut by the pipe cutting mechanism, the push rod can also eject the last remaining part from the front side of the pipe cutting mechanism. Compared with the prior art, the amount of remaining material can be reduced as much as possible, the utilization rate of material is improved, and the last remaining material can also be ejected from the pipe cutting mechanism. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a top view of the present application when it is not started;

[0024] Figure 2 is a sectional view of the present application when it is in the first working state;

[0025] Figure 3 is a sectional view of the present application when it is in the second working state;

[0026] Figure 4 yes Figure 1 Enlarged view of section A;

[0027] Figure 5 yes Figure 2 Enlarged view of section B;

[0028] Figure 6 yes Figure 3 Enlarged view of section C;

[0029] Figure 7 This is a schematic diagram of the assembly structure of the feeding component and the base;

[0030] Figure 8 This is a schematic diagram of the mating structure between the push rod and the fitting;

[0031] Figure 9 This is a schematic diagram of the connection structure between the left clamping block and the right clamping block;

[0032] Figure 10 This is a front view of the positional relationship between the feeding component and the hosting component in the second embodiment of the present invention. Detailed Implementation

[0033] The technical solution of the present invention will now be clearly and completely described in conjunction with the accompanying drawings.

[0034] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in this invention are only used to explain the relative positional relationships and movement of the components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly. Furthermore, descriptions involving "preferred," "second-best," etc., in this invention are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "preferred" or "second-best" may explicitly or implicitly include at least one of those features.

[0035] Reference Figures 1 to 10 The present invention proposes a straight tube axial feeding device, including a base 1, a push tube assembly disposed at the front of the base 1, a feeding assembly disposed at the rear of the base 1, a support member 21 disposed on the base 1 and located between the feeding assembly and the push tube assembly, and a first push tube driver 31 capable of driving the feeding assembly to move back and forth relative to the base 1.

[0036] The feeding assembly comprises a push rod 41, the maximum radial dimension of the push rod 41 is less than or equal to the outer diameter of the pipe 32, the front end of the push rod 41 is provided with a plug 411 capable of being inserted into the inner hole of the pipe 32, a part or the whole of the outer side wall of the plug 411 is in abutment with the inner side wall of the pipe 32, and a step 412 capable of abutting against the end face of the pipe 32 is formed between the rear end of the plug 411 and the outer side wall of the push rod 41. The push rod 41 can be a round rod, or a square rod, a hexagonal rod or other shaped rod, and the round rod is the best. When the push rod 41 is a round rod, the maximum radial dimension of the push rod 41 is the outer diameter of the push rod 41, and when the push rod 41 is a square rod, the maximum radial dimension of the push rod 41 is the diagonal of the cross section of the push rod 41.

[0037] The supporting pipe 21 is provided with a supporting pipe groove 211, which is a V-shaped groove or a U-shaped groove with an opening facing upward. The push pipe assembly comprises a pushing piece 51 and a horizontal pushing driver 52 capable of driving the pushing piece 51 to move forward and backward, the pushing piece 51 can push the pipe 32 in the supporting pipe groove 211 backward to insert the plug 411 of the push rod 41 into the inner hole of the pipe 32, and the push pipe assembly further comprises a first avoiding driver 53 capable of driving the pushing piece 51 to move up and down, so that the pushing piece 51 can avoid the area swept by the forward movement of the push rod 41.

[0038] The pipe 32 is generally a copper pipe, and the outer diameter of the pipe 32 has specifications such as 8 mm, 9 mm, 10 mm, 11 mm, etc. Taking the pipe 32 with an outer diameter of 10 mm as an example, the diameter of the corresponding push rod 41 can be 10 mm, 9.9 mm, 9.8 mm, etc. When the pipe 32 is processed by the feeding device of the present application, the pipe cutting mechanism 9 is arranged at the rear end of the machine base 1, and the method for pushing the pipe 32 to the pipe cutting mechanism 9 for cutting is as follows: first, the pipe 32 is conveyed into the supporting pipe groove 211 of the supporting pipe 21, at this time the supporting pipe groove 211 is aligned with the push rod 41; then the pushing piece 51 pushes the pipe 32 backward, so that the plug 411 of the push rod 41 is inserted into the inner hole of the pipe 32, at this time the state is as shown in Figure 2 and Figure 5 Then, under the power of the first avoiding driver 53, the push pipe is moved away upward or downward or leftward or rightward, so that the front end of the pipe 32 is aligned with the feeding hole 91 of the pipe cutting mechanism 9; then the pipe 32 is pushed forward by the push rod 41, so that the front end of the pipe 32 is inserted into the feeding hole 91 of the pipe cutting mechanism 9, and the pipe cutting mechanism 9 can cut the pipe 32 little by little; when the remaining part of the pipe 32 is short, the push rod 41 can be pushed into the feeding hole 91 of the pipe cutting mechanism 9 together with the pipe 32, at this time the state is as shown in Figure 3 and Figure 6The push rod 41 can also push the last excess material out of the front side of the pipe cutting mechanism 9 after the pipe cutting mechanism 9 cuts the last part of the pipe 32. The pipe cutting mechanism 9 can cut the pipe in a ring cutting and then pulling cutting mode or a ring cutting and then snapping cutting mode. Compared with the prior art, the amount of excess material can be reduced as much as possible, the material utilization rate is improved, and the last excess material can be pushed out of the pipe cutting mechanism 9.

[0039] In a preferred embodiment of the present application, the feeding assembly further comprises a mounting base 4 movably arranged on the base 1 and a second pipe pushing driver 42 arranged on the mounting base 4, the push rod 41 is movably arranged on the mounting base 4 and can be driven by the second pipe pushing driver 42 to move back and forth relative to the mounting base 4, and the first pipe pushing driver 31 is used to drive the mounting base 4 and the push rod 41 to move back and forth relative to the base 1. A sliding seat 43 is slidably arranged on the mounting base 4, a support frame 44 is fixedly arranged on the mounting base 4, the rear part of the push rod 41 is fixed to the sliding seat 43, and the front part of the push rod 41 is in sliding fit with the support frame 44, and the second pipe pushing driver 42 is in transmission connection with the sliding seat 43 to drive the push rod 41 to move back and forth relative to the mounting base 4.

[0040] As a further optimization of the above-mentioned scheme, a linear bearing is arranged on the support frame 44, and the support frame 44 is in sliding fit with the push rod 41 through the linear bearing.

[0041] The first pipe pushing driver 31 is an electric motor, a pneumatic cylinder or an oil cylinder, and the second pipe pushing driver 42 is an electric motor, a pneumatic cylinder or an oil cylinder. When the first pipe pushing driver 31 and the second pipe pushing driver 42 are electric motors, a screw pair or a gear and rack pair needs to be used in cooperation to drive the sliding seat 43 and the push rod 41 to move back and forth.

[0042] As a further improvement of the above-mentioned scheme, the mounting base 4 is provided with a pipe clamping device 8 capable of clamping the pipe 32, and the pipe clamping device 8 is located in front of the pipe 32. Specifically, the pipe clamping device 8 comprises a left clamping block 81, a right clamping block 82 located to the right of the left clamping block 81, a first pipe clamping driver 83 capable of driving the left clamping block 81 to move left and right, and a second pipe clamping driver 84 capable of driving the right clamping block 82 to move left and right, a first clamping groove 811 is arranged on the right side surface of the left clamping block 81, a second clamping groove 812 corresponding to the first clamping groove 811 is arranged on the left side surface of the right clamping block 82, and the left clamping block 81 and the right clamping block 82 are clamped together to clamp the pipe 32 through the first clamping groove 811 and the second clamping groove 812.

[0043] When the pipe 32 is just about to be cut, the pipe 32 is far away from the cutting mechanism 9, so the pipe 32 can be clamped by the pipe clamping device 8, and then the mounting base 4 pushes the pipe 32 forward with the pipe clamping device 8 and the push rod 41, when the pipe clamping device 8 is close to the cutting mechanism 9, the mounting base 4 stops, then the left clamping block 81 and the right clamping block 82 are loosened, and then the second pipe pushing driver 42 continues to push the push rod 41 and the pipe 32 forward, so that the push rod 41 passes through the space between the first clamping groove 811 and the second clamping groove 812, until the pipe 32 is cut.

[0044] Preferably, the first clamping groove 811 and the second clamping groove 812 are both semicircular grooves, and the first clamping groove 811 and the second clamping groove 812 jointly form a circular hole when the left clamping block 81 and the right clamping block 82 are folded.

[0045] The first pipe clamping driver 83 and the second pipe clamping driver 84 can be a pneumatic cylinder, a motor or an oil cylinder, and the pneumatic cylinder is the best.

[0046] In order to avoid the mispositioning of the left clamping block 81 and the right clamping block 82, the left clamping block 81 or the right clamping block 82 is provided with a positioning guide pin 85 arranged along the left-right direction, and the right clamping block 82 or the left clamping block 81 is provided with a guide hole 86 matched with the positioning guide pin 85.

[0047] As a further improved scheme of the above scheme, the machine base 1 is provided with a second avoiding driver 71 capable of driving the pipe supporting piece 21 to move up and down, so that the pipe supporting piece 21 can avoid the area swept by the forward movement of the feeding assembly. Specifically, the machine base 1 is fixed with a second bracket 73, the second bracket 73 is movably provided with a second lifting seat 72, the pipe supporting piece 21 is arranged on the second lifting seat 72, and the second avoiding driver 71 is installed on the second bracket 73 and is in transmission connection with the second lifting seat 72. By adopting such design, the mounting base 4 can be directly installed on the guide rail of the machine base 1, so that the overall height of the feeding assembly is relatively low, which is beneficial to save space and materials required for building the rack. The number of the pipe supporting pieces 21 is generally 1-6, which is set according to the length of the pipe 32, when the relevant parts of the feeding assembly move forward to the position close to the pipe supporting piece 21, the corresponding pipe supporting piece 21 moves downward to avoid the position of the feeding assembly, and then the feeding assembly can continue to move forward.

[0048] Referring to Figure 10In some schemes of the present application, the holding member 21 can also be fixed, and a support frame 15 is installed above the holding member 21 on the base 1, the support frame 15 is provided with a guide rail 16, the mounting seat 4 of the feeding assembly is slidingly installed on the guide rail 16, the sliding seat 43 is slidingly installed on the mounting seat 4, and the upper portion of the push rod 41 is connected with the sliding seat 43 through the vertical rod 17. In this way, when the feeding assembly moves forward, the push rod 41 can also move along the holding groove 211 to push the pipe 32 forward.

[0049] In a preferred scheme of the present application, the base 1 is fixed with a first support frame 61, the first support frame 61 is movably provided with a first lifting seat 62, the first lifting seat 62 is driven by the first avoiding driver 53 to move up and down, the first lifting seat 62 is provided with a third support frame 63, and the horizontal pushing driver 52 and the pushing member 51 are arranged on the third support frame 63.

[0050] Further, the third support frame 63 is also provided with a guide groove 64 capable of guiding the pipe 32, the guide groove 64 is staggered with the pushing member 51 in the up-down direction, and the guide groove 64 is a U-shaped groove or a V-shaped groove with an opening facing upward. When the third support frame 63 moves up and down to make the pushing member 51 avoid the moving path of the push rod 41, the guide groove 64 can move to a position aligned with the push rod 41, and is used for guiding the pipe and the guide groove 64, so that the front end of the pipe can be aligned with the feeding hole 91 of the pipe cutting mechanism 9.

[0051] Further, the pushing member 51 includes a base plate 511 movably installed on the third support frame 63, a push plate 512 located at the rear side of the base plate 511 and capable of moving back and forth relative to the base plate 511, and a buffer elastic member 513 connected between the base plate 511 and the push plate 512. The horizontal pushing driver 52 is in transmission connection with the base plate 511 to drive the base plate 511, the push plate 512 and the buffer elastic member 513 to move back and forth together. When the push plate 512 pushes the pipe 32 backward, the rear end of the pipe 32 will be pushed against the step 412 of the push rod 41. During this process, the buffer elastic member 513 can form a buffer to avoid rigid collision between the pipe 32 and the step 412 of the push rod 41, so as to avoid damage to the pipe 32 or the push tube. The buffer elastic member 513 can be a cylindrical spring, a spring sheet, a conical spring, an air spring, an elastic air bag or the like.

[0052] In order to improve the motion smoothness of each action component, the first guide rail capable of guiding the mounting seat 4 is arranged on the base 1, and the sliding block matched with the first guide rail is arranged on the mounting seat 4; the second guide rail guiding the sliding seat 43 is arranged on the mounting seat 4; the third guide rail guiding the left clamping block 81 and the right clamping block 82 is arranged on the mounting seat 4, and the sliding block matched with the third guide rail is arranged on the left clamping block 81 and the right clamping block 82 respectively. The guide column mechanism capable of guiding in the up-down direction is arranged between the first lifting seat 62 and the first support 61, the guide column mechanism capable of guiding in the up-down direction is arranged between the second lifting seat 72 and the second support 73, and the third guide column mechanism capable of guiding in the front-rear direction is arranged between the base plate 511 and the third support 63.

[0053] The first avoiding driver 53, the second avoiding driver 71 and the transverse pushing driver 52 can be a cylinder, a motor or an oil cylinder, and the cylinder is the best.

[0054] When the straight pipe axial feeding device is used in cooperation with the pipe cutting mechanism to produce the pipe fitting, either the above-mentioned mode of cutting the finished product pipe first and then leaving the remaining material or the mode of cutting the remaining material first and then cutting the finished product pipe can be adopted. The specific steps of the production scheduling and pipe cutting method are as follows:

[0055] S1, the pipe cutting mechanism 9 is arranged in front of the pipe pushing assembly;

[0056] S2, the pipe fitting 32 with the basic length L and the size error a is fed to the pipe supporting piece 21, the actual length of the pipe fitting 32 is L-a~L+a, the pipe pushing assembly pushes the pipe fitting 32 backward, so that the rear end face of the pipe fitting 32 is positioned on the stepped face 412 of the push rod 41;

[0057] S3, the first avoiding driver 53 pushes the pushing piece 51 to move to avoid the area swept by the forward movement of the push rod 41, the feeding assembly pushes the pipe fitting 32 forward into the working position of the pipe cutting mechanism 9, and then the pipe cutting mechanism 9 cuts the front end of the pipe fitting 32, so that the remaining length of the pipe fitting 32 is L-b, wherein a≤b≤100mm;

[0058] S4, the feeding assembly continues to push the pipe fitting 32 forward, and the pipe cutting mechanism 9 cuts the pipe fitting 32 into n straight pipe segments, n is an integer greater than 1, and the lengths of the straight pipe segments are X1, X2, …, Xn respectively, wherein X1+X2+…+Xn=L-b.

[0059] The three specific production embodiments of the production scheduling and pipe cutting method are as follows: Embodiment

[0060] In this embodiment, the production scheduling and pipe cutting method includes the following steps:

[0061] S1, the pipe cutting mechanism 9 is arranged in front of the pipe pushing assembly;

[0062] S2, the pipe 32 with a basic length L of 3020mm and a size error a of 5mm is fed to the pipe supporting member 21, the actual length of the pipe 32 is measured as 3018mm, the pipe pushing assembly pushes the pipe 32 backward, the rear end surface of the pipe 32 is positioned by abutting against the stepped surface 412 of the push rod 41;

[0063] S3, the value of b is set as 20mm, the first avoidance driver 53 drives the pusher 51 to move to avoid the area swept by the forward movement of the push rod 41, the feeding assembly pushes the pipe 32 forward to the working position of the pipe cutting mechanism 9, then the pipe cutting mechanism 9 cuts the front end of the pipe 32, the remaining length of the pipe 32 is 3000mm, the cut part is the excess material, the length of the excess material is 18mm;

[0064] S4, the feeding assembly continues to push the pipe 32 forward, the pipe cutting mechanism 9 cuts the pipe 32 into three straight pipe segments, the lengths of the straight pipe segments are X1, X2 and X3 respectively, each of which is 1000mm. Embodiment

[0065] In this embodiment, the production scheduling and pipe cutting method comprises the following steps:

[0066] S1, the pipe cutting mechanism 9 is placed in front of the pipe pushing assembly;

[0067] S2, the pipe 32 with a basic length L of 3020mm and a size error a of 5mm is fed to the pipe supporting member 21, the actual length of the pipe 32 is measured as 3022mm, the pipe pushing assembly pushes the pipe 32 backward, the rear end surface of the pipe 32 is positioned by abutting against the stepped surface 412 of the push rod 41;

[0068] S3, the value of b is set as 20mm, the first avoidance driver 53 drives the pusher 51 to move to avoid the area swept by the forward movement of the push rod 41, the feeding assembly pushes the pipe 32 forward to the working position of the pipe cutting mechanism 9, then the pipe cutting mechanism 9 cuts the front end of the pipe 32, the remaining length of the pipe 32 is 3000mm, the cut part is the excess material, the length of the excess material is 22mm;

[0069] S4, the feeding assembly continues to push the pipe 32 forward, the pipe cutting mechanism 9 cuts the pipe 32 into four straight pipe segments, the lengths of the straight pipe segments are X1, X2, X3 and X4 respectively, each of which is 1000mm, 600mm, 800mm and 600mm respectively. Embodiment

[0070] In this embodiment, the production scheduling and pipe cutting method comprises the following steps:

[0071] S1, the pipe cutting mechanism 9 is placed in front of the pipe pushing assembly;

[0072] S2, the pipe 32 with a basic length L of 2010mm and a size error a of 5mm is loaded on the pipe supporting element 21, the actual length of the pipe 32 is measured as 2016mm, the pipe pushing assembly pushes the pipe 32 backward, the rear end surface of the pipe 32 is positioned on the stepped surface 412 of the push rod 41, and the rear end surface of the pipe 32 is positioned;

[0073] S3, the value of b is set as 10mm, the first avoidance driver 53 pushes the pushing element 51 to move to avoid the area swept by the push rod 41 when moving forward, the pipe 32 is pushed forward into the working position of the pipe cutting mechanism 9 by the feeding assembly, then the pipe cutting mechanism 9 cuts the front end of the pipe 32, the remaining length of the pipe 32 is 2000mm, and the cut part is the excess material, the length of the excess material is 6mm;

[0074] S4, the pipe 32 is continuously pushed forward by the feeding assembly, the pipe 32 is cut into four straight pipe segments by the pipe cutting mechanism 9, and the lengths of the straight pipe segments are X1, X2, X3 and X4 respectively, which are 500mm, 400mm, 500mm and 600mm.

[0075] It can be known from the above three embodiments that the method is suitable for processing the raw material pipe with length error, and the length of the excess material can be controlled in a very small range after processing, and the length of the excess material can even approach the absolute value of the length error of the raw material pipe 32, so that the utilization rate of the raw material can be greatly improved.

[0076] The above are only preferred embodiments of the present application, and do not limit the patent scope of the present application, any equivalent structural transformation made under the inventive concept of the present application, or direct or indirect application in other related technical fields is included in the patent protection scope of the present application.

Claims

1. A straight tube axial feeding device, characterized by, The machine base (1), the push tube assembly arranged at the front of the machine base (1), the feeding assembly arranged at the rear of the machine base (1), the pipe supporting member (21) arranged on the machine base (1) and located between the feeding assembly and the push tube assembly, and the first push tube driver (31) capable of driving the feeding assembly to move forward and backward relative to the machine base (1), the feeding assembly comprises a push rod (41), the maximum radial dimension of the push rod (41) is less than or equal to the outer diameter of the pipe (32), the front end of the push rod (41) is provided with a plug (411) capable of being inserted into the inner hole of the pipe (32), the rear end of the plug (411) and the outer side wall of the push rod (41) form a step (412) capable of abutting against the end face of the pipe (32), the pipe supporting member (21) is provided with a pipe supporting groove (211), the push tube assembly comprises a pusher (51) and a horizontal push driver (52) capable of driving the pusher (51) to move forward and backward, the pusher (51) can push the pipe (32) in the pipe supporting groove (211) backward when moving backward to make the plug (411) of the push rod (41) inserted into the inner hole of the pipe (32), the push tube assembly further comprises a first avoiding driver (53) capable of driving the pusher (51) to move to make the pusher (51) avoid the area swept by the push rod (41) when moving forward; The machine base (1) is provided with a second avoiding driver (71) capable of driving the pipe supporting member (21) to move up and down to make the pipe supporting member (21) avoid the area swept by the feeding assembly when moving forward; The machine base (1) is fixed with a first support (61), the first support (61) is movably provided with a first lifting seat (62), the first avoiding driver (53) is arranged on the first support (61) and used for driving the first lifting seat (62) to move up and down, the first lifting seat (62) is provided with a third support (63), and the horizontal push driver (52) and the pusher (51) are arranged on the third support (63).

2. A straight tube axial feeding device according to claim 1, characterized in that, The push rod (41) is a circular rod, the plug (411) is a conical rod with a diameter gradually increasing from front to rear, and the outer side wall of the rear end of the plug (411) is in close contact with the inner side wall of the pipe (32).

3. A straight tube axial feeding device according to claim 1, characterized in that, The third support (63) is further provided with a guide groove (64) capable of guiding the pipe (32), the guide groove (64) is staggered with the pusher (51) in the up-down direction, and the third support (63) can move the guide groove (64) to a position aligned with the push rod (41) when moving up and down.

4. A straight tube axial feeding device according to claim 1, characterized in that, The pushing piece (51) comprises a base plate (511) movably mounted on the third support (63), a pushing plate (512) located at the back side of the base plate (511) and movable back and forth relative to the base plate (511), and a buffer elastic member (513) connected between the base plate (511) and the pushing plate (512), and the horizontal pushing driver (52) is in transmission connection with the base plate (511) to drive the base plate (511), the pushing plate (512) and the buffer elastic member (513) to move back and forth together.

5. A straight tube axial feeding device according to claim 1, characterized in that, The feeding assembly further comprises a mounting seat (4) movably arranged on the machine base (1) and a second pushing tube driver (42) arranged on the mounting seat (4), and the pushing rod (41) is movably arranged on the mounting seat (4) and can be driven by the second pushing tube driver (42) to move back and forth relative to the mounting seat (4), and the first pushing tube driver (31) is used for driving the mounting seat (4) and the pushing rod (41) to move back and forth together relative to the machine base (1).

6. A straight tube axial feeding device according to claim 5, characterized in that The mounting seat (4) is slidably provided with a sliding seat (43), the mounting seat (4) is fixedly provided with a support frame (44), the rear portion of the pushing rod (41) is fixed with the sliding seat (43), and the front portion of the pushing rod (41) is in sliding fit with the support frame (44), and the second pushing tube driver (42) is in transmission connection with the sliding seat (43) to drive the pushing rod (41) to move back and forth relative to the mounting seat (4).

7. A straight tube axial feeding device according to claim 5, characterized in that, The mounting seat (4) is provided with a pipe clamping device (8) capable of clamping the pipe (32), and the pipe clamping device (8) is located in front of the pipe (32).

8. A straight tube axial feeding device according to claim 7, characterized in that The pipe clamping device (8) comprises a left clamping block (81), a right clamping block (82) located right to the left clamping block (81), a first pipe clamping driver (83) capable of driving the left clamping block (81) to move left and right, and a second pipe clamping driver (84) capable of driving the right clamping block (82) to move left and right, a first clamping groove (811) is arranged on the right side surface of the left clamping block (81), a second clamping groove (812) corresponding to the first clamping groove (811) is arranged on the left side surface of the right clamping block (82), and the pipe (32) is clamped through the first clamping groove (811) and the second clamping groove (812) when the left clamping block (81) and the right clamping block (82) are folded.

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