Online multi-cutting head cycle cutting method and device

Abstract

The present invention discloses an online multi-cutting head circular cutting method and device, the method includes: a plurality of saw carriages are arranged on the circular guide rail on the side of the material, each saw carriage is provided with an independent driving mechanism; when the current saw carriage is tracking and cutting the material, another saw carriage waits at the starting point, and when the material reaches the fixed length again, the other saw carriage starts to track and cut the material; when the material reaches the fixed length again, if the number of saw carriages is 2, the previous saw carriage tracks and cuts the material again, and a new working cycle starts; or if the number of saw carriages is greater than 2, the third saw carriage starts to track and cut the material until each saw carriage completes one tracking and cutting, and then a new working cycle starts. The present invention uses a circular track, and when the number of saw carriages is increased, the length of the overall track is not increased, which greatly shortens the length of the overall equipment and reduces the floor space of the equipment; and the saw carriage does not need to slow down after running to cut the material, and still runs forward at a high speed or a re-accelerated speed.

Description

Technical Field

[0001] The invention relates to a cutting method in the field of welded pipe production, and is mainly applied to an online cut-to-length cutting method of a welded pipe production line, and specifically relates to an online multi-cutting head cycle cutting method. Background Art

[0002] With the continuous development of the field of welded pipe production, the requirements for the production efficiency of cutting equipment and the speed of the production line are also constantly increasing. The current cutting equipment is mainly a single saw car, on which a cutting tool is installed. When the material reaches the required fixed length, the saw car tracks and synchronizes, and then the cutting tool cuts. After cutting, the saw car decelerates to zero, and then accelerates back to the origin, waiting for the next cycle. When the production line speed exceeds a certain speed, the saw car will not be able to complete a cycle and return to the origin, so the reciprocating motion of a single saw car cannot meet the requirements during high-speed production. In the form of multiple cars in series and multiple cars reciprocating motion, in actual production, the trolley also needs to return to the origin after cutting is completed, and cut in a cycle in sequence.

[0003] Specifically, most of the current sawing equipment uses single saw carriage tracking. When the production line exceeds a certain speed, the time for saw carriage tracking, synchronization, cutting, and returning cannot meet the actual production speed requirements, affecting production efficiency.

[0004] Chinese patent ZL201610018663.5 discloses a new method for synchronously cutting continuous formed materials with a fixed length by connecting multiple vehicles in series. In this method, the sawing vehicle returns to a fixed origin after cutting, and the sawing vehicle undergoes a process of acceleration and deceleration; moreover, the more sawing vehicles are connected in series, the longer the overall length of the equipment will be, and the larger the floor space will be.

[0005] Chinese patent ZL201410353425.0 discloses a method and device for multiple vehicles to reciprocate and alternately cut materials. The sawing vehicles also have the process of acceleration and deceleration. Moreover, this multiple vehicle alternating reciprocating cutting method sets two equipment bases on both sides of the material. Only one sawing vehicle can be installed on each equipment base, which not only occupies a large area, but also has a limited number of sawing vehicles. Summary of the invention

[0006] In order to solve the deficiencies in the prior art, the present invention proposes an online multi-cutting head circular cutting method, which is a method in which two or more saw carriages run on a circular track, and cutting tools installed on the saw carriages track and cut materials produced online.

[0007] The invention also discloses the above-mentioned online multi-cutting head circulating cutting device.

[0008] The technical solution of the present invention is as follows:

[0009] An online multi-cutting head cyclic cutting method comprises: a plurality of saw carriages are arranged on a circular guide rail on the side of a material to be cut, and each saw carriage is provided with an independent driving mechanism to drive the saw carriage to run along the circular guide rail;

[0010] When the previous saw carriage is tracking and cutting the material, the other saw carriage is waiting at the starting point of the circular guide rail. When the material reaches the fixed length again after being cut by the previous saw carriage, the other saw carriage starts tracking and cutting the material, and the previous saw carriage returns to the starting point.

[0011] When the material reaches the fixed length again after being cut by another saw carriage, if the number of saw carriages is 2, the previous saw carriage tracks and cuts the material again, and the other saw carriage returns to the starting point, thereby starting a new work cycle; or if the number of saw carriages is greater than 2, the third saw carriage starts to track and cut the material, and the other saw carriage returns to the starting point, until each saw carriage completes a tracking cut, and then starts a new work cycle.

[0012] Furthermore, each saw car starts to accelerate at the starting point of the circular guide rail, and when it runs to a position parallel to the material, it reaches a synchronous speed with the material and starts cutting; after the cutting is completed, the saw car does not need to slow down, and still goes around the circular guide rail at a high speed or a re-accelerated speed to return to the starting point, waiting for the next cutting.

[0013] Furthermore, a circular guide rail is provided on one side of the material to be cut, and after the multiple sawing vehicles on the circular guide rail complete tracking and cutting of the material in sequence, a new working cycle begins.

[0014] Alternatively, further, a circular guide rail is provided on each side of the material to be cut, and a saw car is provided on the circular guide rail or multiple saw cars are provided on the circular guide rail; the saw cars on the two circular guide rails track and cut the material alternately until all the saw cars complete tracking and cutting the material once, and then a new working cycle begins.

[0015] Furthermore, the sawing vehicle starting point of the annular guide rail is an arc position of the annular guide rail.

[0016] Furthermore, when two or more saw carriages are used, the saw carriages are arranged in sequence at the arc position of the circular guide rail and on the other side of the circular guide rail relative to the material after returning, waiting for the next cycle.

[0017] An online multi-cutting head circulating cutting device, comprising:

[0018] Annular guide rails: annular guide rails are provided on the side of the material to be cut;

[0019] A saw carriage, wherein a plurality of saw carriages are arranged on the circular guide rail, and each saw carriage is provided with an independent driving mechanism and a cutting assembly;

[0020] A control mechanism, wherein the control mechanism is configured such that when a current saw carriage is tracking and cutting the material, another saw carriage waits at the starting point of the circular guide rail, and when the material reaches the fixed length again after being cut by the previous saw carriage, the control mechanism drives the other saw carriage to start tracking and cutting the material, and the previous saw carriage returns to the starting point; when the material reaches the fixed length again after being cut by another saw carriage, if the number of saw carriages is 2, the control mechanism drives the previous saw carriage to track and cut the material again, and the other saw carriage returns to the starting point, thereby starting a new work cycle; or if the number of saw carriages is greater than 2, the control mechanism drives the third saw carriage to start tracking and cutting the material, and the other saw carriage returns to the starting point, and the operation is performed in sequence until each saw carriage completes a tracking and cutting operation, and then a new work cycle is started.

[0021] Furthermore, an annular guide rail is provided on one side of the material to be cut, and a plurality of sawing vehicles are sequentially arranged on the annular guide rail.

[0022] Alternatively, further, a circular guide rail is provided on each side of the material to be cut, and a sawing vehicle is provided on each circular guide rail, or a plurality of sawing vehicles are provided on each circular guide rail. The key improvements of the present invention include the following:

[0023] (1) The present invention uses a circular track, and the saw car runs along the circular track.

[0024] (2) The number of sawing vehicles can be increased as needed on the circular track of the present invention without increasing the overall length of the track.

[0025] In summary, the present invention uses a circular track as a whole, and the saw car runs on the circular track. During normal production, the saw car starts to accelerate when it is on the curved track, reaches the synchronous speed with the material when it runs to a position parallel to the material, and starts cutting. After the cutting is completed, the saw car does not need to slow down, and still runs forward at a high speed or a re-accelerated speed, goes around the circular track once and returns to the starting point of the circular track of the saw car, waiting for the next cutting or directly tracking the cutting again. When two or more saw cars are used, the saw cars are arranged in sequence at the curved position and the other side of the circular track after returning, waiting for the next cycle, and there is no need to increase the length of the circular track. Compared with the layout of the straight track, the length of the overall equipment is greatly shortened and the floor space occupied by the equipment is reduced.

[0026] The beneficial effects of the present invention are as follows:

[0027] (1) The present invention uses a circular track layout, and when the number of saw carriages is increased, the length of the entire track does not increase. Compared with the layout of a straight track, the circular track greatly shortens the length of the entire device and reduces the footprint of the device.

[0028] (2) With the method of the present invention, after the saw car has finished cutting the material, it does not need to slow down, but continues to move forward at a high speed or a re-accelerated speed, goes around the circular track once and returns to the starting point of the circular track, waiting for the next cutting or directly tracking the cutting. Compared with the saw car that reciprocates in a straight line, the acceleration and deceleration process when the saw car returns is reduced once, thereby reducing the cycle time of a single cutting and improving the production speed.

[0029] (3) The device of the present invention has a reasonable structure and ingenious design. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 : Schematic diagram of the arrangement of two saw cars on a circular track.

[0031] Figure 2 : Saw car ① tracks the material, and saw car ② moves forward to the starting point position diagram.

[0032] Figure 3 : The position diagram of saw car ① tracking the cutting material and saw car ② waiting at the starting point.

[0033] Figure 4 : Saw car ① returns after cutting, and saw car ② starts to track the location map of the material.

[0034] Figure 5 :The saw car ② tracks the material and the saw car ① returns to the starting point.

[0035] Figure 6 :After cutting, saw car ② returns, and saw car ① starts to track the location map of the material.

[0036] Figure 7 :The saw car ① tracks the material, and the saw car ② returns to the starting point.

[0037] Figure 8 : Schematic diagram of the arrangement of three saw cars on a circular track.

[0038] Fig. 9 : Schematic diagram of the arrangement of two circular tracks and two saw carriages.

[0039] Fig.10 : Schematic diagram of the arrangement of two circular tracks and six saw cars.

[0040] Among them, 1-bed base, 2-annular guide rail, 3-first sawing car, 4-second sawing car, 5-first cutting component, 6-first driving mechanism, 7-second cutting component, 8-second driving mechanism, 9-material. DETAILED DESCRIPTION

[0041] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0042] Example 1

[0043] Reference Figures 1 to 7 As shown, in this embodiment, two saw carriages are arranged on one annular guide rail 2 as an example, and the material 9 runs on one side of the annular guide rail 2 and is to be cut.

[0044] The bed base 1 is provided with an annular guide rail 2, and the first sawing vehicle 3 and the second sawing vehicle 4 run along the annular guide rail 2. Figure 1 shown.

[0045] The following is a working cycle of two saw carriages, as follows:

[0046] The first sawing carriage 3 and the second sawing carriage 4 are at the starting point. When the material 9 reaches the set length, the first driving mechanism 6 drives the first sawing carriage 3 to accelerate the tracking (such as Figure 2 As shown), when the first sawing vehicle 3 and the material 9 are synchronized, the first cutting assembly 5 cuts the material 9 (as shown in FIG. Figure 3 After cutting, the first sawing vehicle 3 continues to run along the circular guide rail 2, returns to a position near the origin, and waits for the next cycle (as shown in FIG. Figure 4 shown).

[0047] When the first saw carriage 3 is cutting or returning to the starting point after cutting or after returning to the starting point, when the material 9 reaches the fixed length again (the condition for starting the second saw carriage 4 is that the material 9 reaches the fixed length again, and it has nothing to do with whether the first saw carriage 3 returns or returns to the starting point after cutting), the second driving mechanism 8 drives the second saw carriage 4 to accelerate tracking (such as Figure 4 As shown), when the second sawing vehicle 4 and the material 9 are synchronized, the second cutting assembly 7 cuts the material 9 (as shown in FIG. Figure 5 After cutting, the second sawing vehicle 4 continues to run along the circular guide rail 2 and returns to a position near the origin (as shown in FIG. Figure 6 shown).

[0048] When the material 9 reaches the set length again, the first sawing vehicle 3 accelerates to track and cut again (such as Figure 7 shown).

[0049] Afterwards, the two saw carriages complete the above working cycle in turn.

[0050] Example 2

[0051] In this embodiment, three saw carriages (such as Figure 8 The specific working cycle is basically the same as that of embodiment 1.

[0052] When the number of saw carriages is more than two, the working cycle follows the rules of the above embodiment 1, and each saw carriage starts, accelerates, cuts materials, and returns in turn according to the set order. When each saw carriage completes one start, acceleration, cutting materials, and return, a new working cycle begins.

[0053] Note: At a certain production speed, the cycle speed of each saw carriage is constant, but as the number of saw carriages increases, the minimum length of the material 9 that can be cut becomes shorter.

[0054] Example 3

[0055] In this embodiment, two annular guide rails 2 are provided, and a running channel for the material 9 to be cut is provided between the two annular guide rails 2, that is, the two annular guide rails 2 are distributed on both sides of the material 9 to be cut. Fig. 9 shown).

[0056] The two saw carriages alternately track and cut the material 9 according to the fixed length.

[0057] Specifically, the first saw car 3 and the second saw car 4 are respectively at the starting points of their respective circular guide rails 2. When the material 9 reaches the set fixed length, the first driving mechanism 6 drives the first saw car 3 to accelerate tracking. When the first saw car 3 and the material 9 are synchronized, the first cutting component 5 cuts the material 9. After cutting, the first saw car 3 continues to run along the circular guide rail 2, returns to the starting point, and waits for the next cycle.

[0058] When the first saw car 3 is cutting or returning to the starting point after cutting or after returning to the starting point, when the material 9 reaches the fixed length again (the condition for starting the second saw car 4 is that the material 9 reaches the fixed length again, and has nothing to do with whether the first saw car 3 returns or returns to the starting point after cutting), the second driving mechanism 8 drives the second saw car 4 to accelerate tracking. When the second saw car 4 and the material 9 are synchronized, the second cutting component 7 cuts the material 9. After cutting, the second saw car 4 continues to run along the annular guide rail 2 and returns to the starting point of its annular guide rail 2.

[0059] When the material 9 reaches the set length again, the first sawing vehicle 3 accelerates to track and cut again, thereby starting the second working cycle.

[0060] Example 4

[0061] In this embodiment, two annular guide rails 2 are provided, and a running channel for the material 9 to be cut is provided between the two annular guide rails 2, that is, the two annular guide rails 2 are distributed on both sides of the material 9 to be cut. Fig.10 shown).

[0062] When there are multiple saw carriages on each annular guide rail 3, the working cycle basically follows the rules of the third embodiment.

[0063] Specifically, Fig.10 As shown, six saw carriages (a total of 3 pairs of saw carriages, each pair including a corresponding pair of saw carriages on the upper and lower annular guide rails 2) track and cut the material 9 alternately according to the fixed length, that is, each pair of saw carriages performs a working cycle according to the rules of Example 3.

[0064] In the above embodiments,

[0065] Preferably, the cutting tools of the first cutting assembly 5 and the second cutting assembly 7 can be any one of saw blade cutting, laser cutting or plasma cutting.

[0066] Preferably, the driving mode of the first driving mechanism 6 and the second driving mechanism 8 can be any one of gear rack, synchronous belt or chain.

[0067] The above description is only a preferred embodiment of the present invention and does not constitute a limitation on the protection scope of the present invention. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. An online multi-cutting head cycle cutting method, characterized in that: The method comprises: a plurality of saw carriages are arranged on the annular guide rail on the side of the material to be cut, each saw carriage is provided with an independent driving mechanism to drive the saw carriage to run along the annular guide rail; two annular guide rails are respectively located on both sides of the material to be cut; When the first saw carriage is tracking and cutting the material, the other saw carriage is waiting at the starting point of another circular guide rail. When the material reaches the fixed length again after being cut by the first saw carriage, the other saw carriage starts tracking and cutting the material, and the first saw carriage returns to the starting point. When the material reaches the fixed length again after being cut by another saw carriage, if the number of saw carriages is 2, the previous saw carriage tracks and cuts the material again, and the other saw carriage returns to the starting point, thereby starting a new work cycle; or if the number of saw carriages is greater than 2, the third saw carriage starts to track and cut the material, and the other saw carriage returns to the starting point, until each saw carriage completes one tracking and cutting, and then starts a new work cycle; Each saw car starts to accelerate at the starting point of the circular guide rail, and when it runs to a position parallel to the material, it reaches a synchronous speed with the material and starts cutting; after the cutting is completed, the saw car does not need to slow down, and still goes around the circular guide rail at a high speed or a re-accelerated speed to return to the starting point and wait for the next cutting.

2. An online multi-cutting head cycle cutting method as claimed in claim 1, characterized in that: An annular guide rail is provided on each side of the material to be cut, and a saw carriage is provided on each annular guide rail or a plurality of saw carriages are provided on each annular guide rail; The saw carriages on the two circular guide rails track and cut the material alternately until all the saw carriages have completed one tracking and cutting of the material, and then a new working cycle begins.

3. The online multi-cutting head cycle cutting method according to claim 1, characterized in that: The sawing car starting point of the annular guide rail is the arc position of the annular guide rail.

4. The online multi-cutting head cycle cutting method according to claim 1, characterized in that: When two or more saw carriages are used, the saw carriages are arranged in sequence at the arc position of the circular guide rail and on the other side of the circular guide rail relative to the material after returning, waiting for the next cycle.

5. An online multi-cutting head circulation cutting device, characterized in that: The device comprises: An annular guide rail, each of which is provided on both sides of the material to be cut, and each of which is provided with a saw carriage or multiple saw carriages; A saw carriage, wherein a plurality of saw carriages are arranged on the circular guide rail, and each saw carriage is provided with an independent driving mechanism and a cutting assembly; A control mechanism, wherein the control mechanism is configured such that when a current saw carriage is tracking and cutting a material, another saw carriage is waiting at the starting point of another circular guide rail, and when the material reaches the fixed length again after being cut by the previous saw carriage, the control mechanism drives the other saw carriage to start tracking and cutting the material, and the previous saw carriage returns to the starting point; when the material reaches the fixed length again after being cut by another saw carriage, if the number of saw carriages is 2, the control mechanism drives the previous saw carriage to track and cut the material again, and the other saw carriage returns to the starting point, thereby starting a new work cycle; or if the number of saw carriages is greater than 2, the control mechanism drives the third saw carriage to start tracking and cutting the material, and the other saw carriage returns to the starting point, until each saw carriage completes a tracking cut, and then starts a new work cycle.

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