A kind of oil casing is coated with outer paint and is spreaded device

Abstract

The oil jacket outer paint coating device comprises an oil jacket bearing mechanism and a paint brushing main body mechanism, the oil jacket bearing mechanism is installed on the left side of the paint brushing main body mechanism, and the two are used in cooperation; when in use, the moving platform moves to the right side, the oil jacket fixing piece on the fixing rod is inserted into the oil jacket, the inflatable sleeve is inflated to connect the fixing rod and the oil jacket, the right end of the oil jacket is separated from the oil jacket support, the fixing rod supports the oil jacket alone and can drive the oil jacket to rotate, the left brush coating mechanism and the right brush coating mechanism are adjusted to rotate the motor to make the right V-shaped brush roller mechanism and the left V-shaped brush roller mechanism of the left brush coating mechanism and the right brush coating mechanism hold the oil jacket, the first motor is rotated, the left brush coating mechanism, the right brush coating mechanism and the feeding mechanism are continuously moved, and after circulation, the rotating motor drives the oil jacket to rotate by a certain angle to continue brushing. The mechanism is reasonable in design.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of oil casing processing, and particularly relates to an external paint smearing device for oil casing. BACKGROUND

[0002] The oil casing is a steel pipe used for supporting the well wall of an oil or gas well to ensure the normal operation of the whole oil well during the drilling process and after the well completion. According to different drilling depths and geological conditions, several layers of casing are used for each well.

[0003] In the oil casing processing process, the external wall of the oil casing needs to be sprayed with anti-rust paint. Currently, in order to improve the production efficiency, the paint spraying method is usually used, which has high efficiency, but causes pollution to the production environment and does not meet the environmental protection requirements. SUMMARY

[0004] In view of the technical problems existing in the prior art, the present application aims to provide an external paint smearing device for oil casing.

[0005] To achieve the purpose of the present application, the present application provides an external paint smearing device for oil casing, which comprises an oil casing bearing mechanism and a paint brushing main body mechanism, the oil casing bearing mechanism is installed on the left side of the paint brushing main body mechanism, and the two are used in cooperation.

[0006] The oil casing bearing mechanism comprises a transverse moving motor, a moving platform, a lifting motor, a lifting block, a first lead screw, a first guide rod and a rotating motor, the moving platform is provided with the transverse moving motor on the left side, the output shaft of the transverse moving motor is connected with a third lead screw, the third lead screw passes through the moving platform and is threadedly connected with the moving platform, the moving platform moves left and right by rotating the third lead screw driven by the transverse moving motor;

[0007] The moving platform is provided with the lifting motor, the output shaft of the lifting motor is connected with the first lead screw, and the first lead screw passes through the lifting block and is threadedly connected, the moving platform is provided with the first guide rod parallel to the first lead screw, the first lead screw and the first guide rod pass through the lifting block and are threadedly connected and slidingly connected respectively, one side of the lifting block is connected with the transversely arranged rotating motor, the output shaft of the rotating motor is connected with the oil casing fixing piece, the oil casing is fixed by the oil casing fixing piece, and the oil casing rotates by rotating the rotating motor;

[0008] The paint brushing main body mechanism comprises a left n-shaped frame, a first motor, a left end block, a second lead screw, a second guide rod, a left brush coating mechanism, a material discharging mechanism, a right brush coating mechanism, a right end block, a right n-shaped frame and a material collecting box.

[0009] The mobile platform is provided below with a guide rail, and the lower end surface of the mobile platform is provided with a guide rail groove.

[0010] The oil jacket fixing member comprises a fixed rod, a limiting sheet and an inflatable expansion sleeve, one end of the fixed rod is connected with the output shaft of the rotary motor, the inflatable expansion sleeve is sleeved on the fixed rod and can be inflated and deflated, and one limiting sheet for limiting the inflatable expansion sleeve is fixed on the fixed rod at both ends of the inflatable expansion sleeve.

[0011] The limiting sheet is made of rubber.

[0012] The right n-shaped frame is provided with an oil jacket support on the right side for supporting the oil jacket, the oil jacket support comprises a support rod, the upper end of the support rod is connected with a guide mechanism, the guide mechanism comprises a guide block, the guide block is provided with a notch, and two guide rollers are arranged in the notch in a symmetrical structure.

[0013] The material discharging mechanism comprises a paint bucket, the paint bucket contains paint, the rear end of the paint bucket is welded with a connecting plate, the second lead screw and the second guide rod pass through the connecting plate and are threadedly connected and slidably connected respectively, the lower end of the paint bucket is connected with a material discharging pipe, and the material discharging pipe is provided with an electromagnetic valve.

[0014] The left brush coating mechanism and the right brush coating mechanism are identical in structure and both comprise a supporting block, an adjusting motor, a right V-shaped brush roller mechanism, a brush roller, a V-shaped frame, a moving plate, a third guide rod, an ear block, a fourth lead screw,

[0015] The second lead screw and the second guide rod pass through the supporting block and are threadedly connected and slidingly connected respectively, one ear block is arranged on the lower end of the supporting block on each side, a third guide rod is arranged between the two ear blocks, a fourth lead screw passes through the ear blocks on the two sides and is slidingly connected, one end of the fourth lead screw is connected with a driven gear, one side of the supporting block is provided with an adjusting motor, the output shaft of the adjusting motor is provided with a driving gear, the driving gear is in transmission connection with the driven gear, the fourth lead screw is rotated by the rotation of the adjusting motor, the fourth lead screw and the third guide rod are connected with the right V-shaped brush roller mechanism and the left V-shaped brush roller mechanism which are symmetrically arranged in two structures, the left V-shaped brush roller mechanism comprises a moving block, a V-shaped frame and a brush roller, the fourth lead screw and the third guide rod pass through the moving block and are threadedly connected and slidingly connected respectively, the lower end of the moving block is connected with the V-shaped frame, the inner side of the V-shaped frame is connected with two rotatable brush rollers.

[0016] Wherein, one side of the material collecting box is provided with a material taking mechanism for taking out the coated oil sleeve.

[0017] Wherein, the material taking mechanism comprises a base, the upper end of the base is provided with a sliding groove, the lower end of a sliding plate is provided with a sliding block which slides in the sliding groove, the upper end of the sliding plate is provided with a nut in the middle, the base is provided with a position adjusting motor, the output shaft of the position adjusting motor is connected with a fifth lead screw, the fifth lead screw passes through the nut and is threadedly connected, the two ends of the sliding plate are respectively provided with a vertical lifting motor, the output shaft of the lifting motor is connected with a sixth lead screw, the sixth lead screw passes through a lifting plate and is threadedly connected, the lifting plate is provided with two material taking blocks which are arranged left and right, one end of the material taking block is provided with an arc-shaped groove for accommodating the oil sleeve.

[0018] Compared with the prior art, the beneficial effects of the present application are as follows: when in use, the oil sleeve enters from the right side, the moving platform moves to the right side, the oil sleeve fixing piece on the fixed rod is inserted into the oil sleeve, the inflatable expansion sleeve is inflated to connect the fixed rod and the oil sleeve, the right end of the oil sleeve is separated from the oil sleeve support, the fixed rod supports the oil sleeve alone and can drive the oil sleeve to rotate, the left brush coating mechanism and the right brush coating mechanism are rotated by the adjusting motor, so that the right V-shaped brush roller mechanism and the left V-shaped brush roller mechanism of the left brush coating mechanism and the right brush coating mechanism hold the oil sleeve, the paint flows to the surface of the oil sleeve through the discharging mechanism, the right V-shaped brush roller mechanism and the left V-shaped brush roller mechanism are used for brushing, the left brush coating mechanism and the right brush coating mechanism and the discharging mechanism are continuously moved by the rotation of the first motor, after one or several cycles of brushing, the oil sleeve is rotated by a certain angle by the rotation motor for continuous brushing until the brushing is completed, the flowing material enters the material collecting box, and the oil sleeve is taken out by the material taking mechanism after the brushing is completed, the mechanism is reasonably designed and has high efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a structural schematic diagram of the embodiment 1 of the present application;

[0020] Figure 2 is a structural schematic diagram of the brush coating mechanism of the present application;

[0021] Figure 3 is a structural schematic diagram of the guiding mechanism of the present application;

[0022] Figure 4 is a structural schematic diagram of the embodiment 2 of the present application;

[0023] Figure 5 is a structural schematic diagram of the material taking mechanism of the present application;

[0024] In the figure, 1 is a guide rail, 2 is a horizontal moving motor, 3 is a moving platform, 4 is a lifting motor, 5 is a lifting block, 6 is a first lead screw, 7 is a first guide rod, 8 is a rotating motor, 9 is a fixed rod, 10 is a limit piece, 11 is an inflatable expansion sleeve, 12 is a left n-shaped frame, 13 is a first motor, 14 is a left end block, 15 is a second lead screw, 16 is a second guide rod, 17 is a left brush coating mechanism, 18 is a material discharging mechanism, 19 is a right brush coating mechanism, 20 is a right end block, 21 is a right n-shaped frame, 22 is a guiding mechanism, 23 is a supporting rod, 24 is a material taking mechanism, 25 is a guiding roller, 26 is a material collecting box, 27 is a third lead screw, 191 is a bearing block, 192 is an adjusting motor, 193 is a right V-shaped brush roller mechanism, 194 is a brush roller, 195 is a V-shaped frame, 196 is a moving plate, 197 is a third guide rod, 198 is an ear block, 199 is a fourth lead screw, 241 is a sliding plate, 242 is a base, 243 is a sliding groove, 244 is a fifth lead screw, 245 is a material taking block, 246 is an arc-shaped groove, 247 is a lifting motor, 248 is a lifting plate, 249 is a position adjusting motor. DETAILED DESCRIPTION

[0025] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0026] The present application will be further described below in conjunction with the drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application.

[0027] Embodiment 1

[0028] As shown in Figures 1-3

[0029] The oil jacket pipe paint smearing device provided in the embodiment comprises an oil jacket pipe bearing mechanism and a paint brushing main body mechanism, the oil jacket pipe bearing mechanism is installed on the left side of the paint brushing main body mechanism, and the two are used in cooperation.

[0030] ​The oil jacket bearing mechanism comprises a horizontal moving motor 2, a moving platform 3, a lifting motor 4, a lifting block 5, a first lead screw 6, a first guide rod 7 and a rotating motor 8.

[0031] The lifting motor 4 is arranged on the moving platform 3, the output shaft of the lifting motor 4 is connected with the first lead screw 6, and the first lead screw 6 penetrates through the lifting block 5 and is threadedly connected, the moving platform 3 is provided with the first guide rod 7 parallel to the first lead screw 6, the first lead screw 6 and the first guide rod 7 penetrate through the lifting block 5 and are threadedly connected and slidingly connected respectively, one side of the lifting block 5 is connected with the transversely arranged rotating motor 8, the output shaft of the rotating motor 8 is connected with an oil jacket fixing part, the oil jacket is fixed through the oil jacket fixing part, and the rotating motor 8 can drive the oil jacket to rotate.

[0032] The paint brushing main body mechanism comprises a left n-shaped frame 12, a first motor 13, a left end block 14, a second lead screw 15, a second guide rod 16, a left brush coating mechanism 17, a discharging mechanism 18, a right brush coating mechanism 19, a right end block 20, a right n-shaped frame 21 and a material collecting box 26, the left n-shaped frame 12 and the right n-shaped frame 21 are identical in structure and are arranged longitudinally with a left-right interval, the upper ends of the left n-shaped frame 12 and the right n-shaped frame 21 are respectively provided with the left end block 14 and the right end block 20 which are identical in structure, and the lower parts of the left n-shaped frame 12 and the right n-shaped frame 21 are provided with the material collecting box 26 which is open upward, the left end block 14 is provided with the first motor 13 on the left side, the output shaft of the first motor 13 is connected with the second lead screw 15, the second lead screw 15 penetrates through the left end block 14 and is slidingly connected with the right end block 20 at the right end, the first motor 13 is rotated to drive the second lead screw 15 to rotate, the second guide rod 16 is arranged above the second lead screw 15, between the left end block 14 and the right end block 20, the second lead screw 15 and the second guide rod 16 are threadedly connected and slidingly connected with the left brush coating mechanism 17, the discharging mechanism 18 and the right brush coating mechanism 19 respectively, the second lead screw 15 is rotated to drive the left brush coating mechanism 17, the discharging mechanism 18 and the right brush coating mechanism 19 to move leftward or rightward simultaneously, the discharging mechanism 18 is used for flowing paint to the outer surface of the oil jacket, and the left brush coating mechanism 17 and the right brush coating mechanism 19 are used for brushing the outer surface of the oil jacket with oil.

[0033] The moving platform is provided below with a guide rail 1, and the lower end surface of the moving platform is provided with a guide rail 1 groove, and the guide rail 1 groove slides on the guide rail 1.

[0034] The oil casing fixing member structure can adopt the structure in the prior art, wherein the structure can also adopt the structure comprising a fixing rod 9, a limiting sheet 10 and an inflatable sleeve 11, one end of the output shaft of the rotating motor 8 is connected with the fixing rod 9, the inflatable sleeve 11 capable of being inflated and deflated is sleeved on the fixing rod 9, and one limiting sheet 10 for limiting the inflatable sleeve 11 is fixed on the fixing rod 9 at two ends of the inflatable sleeve 11 respectively, in use, the inflatable sleeve 11 is inserted into the oil casing, inflation is carried out, and the inflatable sleeve is used to realize the connection of the two; when it is needed to be pulled out, the inflatable sleeve is deflated.

[0035] The limiting sheet 10 can adopt rubber material.

[0036] The right n-shaped frame 21 is provided with an oil casing support for supporting the oil casing on the right side, the oil casing support comprises a supporting rod 23, a guiding mechanism 22 is connected with the upper end of the supporting rod 23, the guiding mechanism 22 comprises a guiding block, the guiding block is provided with a notch, and two guiding rollers 25 symmetrically arranged in structure are arranged in the notch. The oil casing can be input by using the above structure.

[0037] The blanking mechanism 18 comprises a paint bucket, the paint bucket contains paint, a connecting plate is welded at the rear end of the paint bucket, the second lead screw 15 and the second guiding rod 16 pass through the connecting plate and are threadedly connected and slidingly connected respectively, a blanking pipe is connected with the lower end of the paint bucket, and an electromagnetic valve is arranged on the blanking pipe.

[0038] The blanking pipe is located above the oil casing, when it is needed to flow the paint into the oil casing, the electromagnetic valve is opened to flow the paint onto the oil casing.

[0039] The left brush coating mechanism 17 and the right brush coating mechanism 19 are consistent in structure, both of them comprise a supporting block 191, an adjusting motor 192, a right V-shaped brush roller mechanism 193, a brush roller, a V-shaped frame 195, a moving plate 196, a third guiding rod 197, an ear block 198 and a fourth lead screw 199,

[0040] The second lead screw 15 and the second guide rod 16 pass through the support block 191 and are threaded and slidably connected, respectively. A lug 198 is provided on each side of the lower end of the support block 191, and a third guide rod 197 is provided between the two lugs 198. A fourth lead screw 199 passes through the lugs 198 on both sides and is slidably connected. One end of the fourth lead screw 199 is connected to a driven gear. An adjusting motor 192 is provided on one side of the support block 191, and a driving gear is provided on the output shaft of the adjusting motor 192. The driving gear and the driven gear... The wheel drive connection is used to rotate the fourth lead screw 199 by adjusting the rotation of the motor 192. The fourth lead screw 199 and the third guide rod 197 are connected to two symmetrically arranged right V-shaped brush roller mechanisms 193 and left V-shaped brush roller mechanisms. The left V-shaped brush roller mechanism includes a moving block, a V-shaped frame 195 and brush rollers. The fourth lead screw 199 and the third guide rod 197 pass through the moving block and are threaded and slidably connected, respectively. The lower end of the moving block is connected to the V-shaped frame 195, and two rotatable brush rollers are connected to the inner side of the V-shaped frame 195.

[0041] In use, the oil casing enters from the right side, and the moving platform 3 moves to the right, causing the oil casing fixing member on the fixing rod 9 to insert into the oil casing. The inflation expansion sleeve 11 inflates, connecting the fixing rod 9 to the oil casing. The right end of the oil casing detaches from the oil casing bracket, and the fixing rod 9 independently supports the oil casing and can drive the oil casing to rotate. The left brushing mechanism 17 and the right brushing mechanism 19 are adjusted by rotating the motor 192. Both the right V-shaped brush roller mechanism 193 and the left V-shaped brush roller mechanism hold the oil sleeve. The paint flows onto the surface of the oil sleeve through the feeding mechanism 18. The right V-shaped brush roller mechanism 193 and the left V-shaped brush roller mechanism are used for brushing. The first motor 13 rotates, and the left brushing mechanism 17, the right brushing mechanism 19, and the feeding mechanism 18 move continuously. After one or several cycles of brushing, the rotary motor 8 drives the oil sleeve to rotate at a certain angle to continue brushing until the brushing is completed. The flowing material enters the receiving box 26.

[0042] Example 2

[0043] like Figures 4-5 As shown, in this embodiment, based on embodiment 1, a material taking mechanism 24 for removing the coated oil sleeve is provided on one side of the receiving box 26, which facilitates the removal and return of materials.

[0044] The taking mechanism 24 comprises a base 242, a sliding groove 243 is arranged at the upper end of the base 242, a sliding block is arranged at the lower end of a sliding plate 241, the sliding block slides in the sliding groove, a nut is arranged at the middle of the upper end of the sliding plate 241, a position adjusting motor 249 is arranged on the base 242, a fifth lead screw 244 is connected with the output shaft of the position adjusting motor 249, the fifth lead screw 244 passes through the nut and is screw-connected, lifting motors 247 are arranged at the two ends of the sliding plate 241 respectively, a sixth lead screw is connected with the output shaft of the lifting motor 247, the sixth lead screw passes through a lifting plate and is screw-connected, two taking blocks 245 which are arranged at intervals are arranged on the lifting plate, an arc-shaped groove 246 which accommodates the oil jacket pipe is arranged at one end of the taking block 245.

[0045] After the coating is completed, the oil jacket pipe is taken out by the taking mechanism 24, the mechanism is reasonable in design and high in efficiency.

[0046] It should be noted that the technical solutions not described in detail in the application adopt the known technology.

[0047] The above is only the preferred embodiment of the application, it should be pointed out that, for the ordinary skilled in the art, without departing from the principles of the application, can also make a number of improvements and refinements, these improvements and refinements should also be considered as the protection scope of the application.

Claims

1. An external coating application device for a casing, characterized by, Including the oil jacket bearing mechanism and the paint brushing main body mechanism, the oil jacket bearing mechanism is installed to the left side of the paint brushing main body mechanism, and both are used in cooperation; The oil jacket bearing mechanism includes a horizontal moving motor, a moving platform, a lifting motor, a lifting block, a first lead screw, a first guide rod and a rotating motor, the moving platform is provided with the horizontal moving motor at the left side, the output shaft of the horizontal moving motor is connected with the third lead screw, the third lead screw passes through the moving platform and is threadedly connected with the moving platform, the third lead screw is rotated by the horizontal moving motor, so that the moving platform moves left and right; The moving platform is provided with the lifting motor, the output shaft of the lifting motor is connected with the first lead screw, and the first lead screw passes through the lifting block and is threadedly connected, the moving platform is provided with the first guide rod parallel to the first lead screw, the first lead screw and the first guide rod pass through the lifting block and are threadedly connected and slidingly connected respectively, one side of the lifting block is connected with the transversely arranged rotating motor, the output shaft of the rotating motor is connected with the oil jacket fixing part, the oil jacket is fixed through the oil jacket fixing part, the rotating motor can drive the oil jacket to rotate; The paint brushing main body mechanism includes a left n-shaped frame, a first motor, a left end block, a second lead screw, a second guide rod, a left brush coating mechanism, a feeding mechanism, a right brush coating mechanism, a right end block, a right n-shaped frame and a material collecting box, the left n-shaped frame and the right n-shaped frame are identical in structure and are arranged longitudinally with a left-right interval, the upper ends of the left n-shaped frame and the right n-shaped frame are respectively provided with the left end block and the right end block which are identical in structure, and the lower parts of the left n-shaped frame and the right n-shaped frame are provided with the material collecting box which is open upward, the left end block is provided with the first motor at the left side, the output shaft of the first motor is connected with the second lead screw, the second lead screw passes through the left end block and is slidingly connected with the right end block at the right end, the second lead screw is rotated by the first motor, the second guide rod is arranged above the second lead screw, between the left end block and the right end block, the second lead screw and the second guide rod are threadedly connected with the left brush coating mechanism, the feeding mechanism and the right brush coating mechanism and are slidingly connected, the second lead screw moves the left brush coating mechanism, the feeding mechanism and the right brush coating mechanism, the feeding mechanism is used for flowing the paint to the outer surface of the oil jacket, and the left brush coating mechanism and the right brush coating mechanism are used for brushing the outer surface of the oil jacket with oil; The oil jacket fixing part includes a fixing rod, a limiting sheet and an inflatable expansion sleeve, the output shaft of the rotating motor is connected with one end of the fixing rod, the inflatable expansion sleeve is sleeved on the fixing rod and can be inflated and deflated, and the fixing rods at both ends of the inflatable expansion sleeve are respectively fixed with one limiting sheet for limiting the inflatable expansion sleeve, in use, the inflatable expansion sleeve is inserted into the oil jacket; The left brush coating mechanism and the right brush coating mechanism are identical in structure, both include a supporting block, an adjusting motor, a right V-shaped brush roller mechanism, a brush roller, a V-shaped frame, a moving plate, a third guide rod, an ear block and a fourth lead screw, The second lead screw and the second guide rod pass through the supporting block and are threadedly connected and slidingly connected respectively, both sides of the lower end of the supporting block are respectively provided with an ear block, a third guide rod is arranged between the two ear blocks, a fourth lead screw passes through the two ear blocks and is slidingly connected, one end of the fourth lead screw is connected with a driven gear, the output shaft of the adjusting motor is provided with a driving gear, the driving gear is in transmission connection with the driven gear, the fourth lead screw is rotated by the rotation of the adjusting motor, the fourth lead screw and the third guide rod are connected with the right V-shaped brush roller mechanism and the left V-shaped brush roller mechanism which are symmetrically arranged in two structures, the left V-shaped brush roller mechanism comprises a moving block, a V-shaped frame and a brush roller, the fourth lead screw and the third guide rod pass through the moving block and are threadedly connected and slidingly connected respectively, the lower end of the moving block is connected with the V-shaped frame, the inner side of the V-shaped frame is connected with two rotatable brush rollers.

2. The external coating application device for a casing or tubing pipe according to claim 1, characterized by The moving platform is provided below with a guide rail, and the lower end surface of the moving platform is provided with a guide rail groove which slides on the guide rail.

3. The external coating application device for a casing or tubing as set forth in claim 1, characterized by The limiting sheet is made of rubber.

4. The external coating application device for a casing or tubing of claim 1, wherein The right n-shaped frame is provided with an oil jacket support on the right side for supporting the oil jacket pipe, the oil jacket support comprises a supporting rod, the upper end of the supporting rod is connected with a guide mechanism, the guide mechanism comprises a guide block, the guide block is provided with a notch, and two guide rollers which are symmetrically arranged are arranged in the notch.

5. The outer coating application device for a casing or tubing pipe according to claim 1, characterized by The blanking mechanism comprises a paint bucket, the paint bucket contains paint, a connecting plate is welded at the rear end of the paint bucket, the second lead screw and the second guide rod pass through the connecting plate and are threadedly connected and slidingly connected respectively, a blanking pipe is connected to the lower end of the paint bucket, and an electromagnetic valve is arranged on the blanking pipe.

6. The external coating application device for a casing or tubing of claim 1, wherein One side of the material receiving box is provided with a material taking mechanism for taking out the coated oil jacket pipe.

7. The external coating application device for a casing or tubing as set forth in claim 6, characterized by The material taking mechanism comprises a base, a sliding groove is arranged at the upper end of the base, a sliding block is arranged at the lower end of a sliding plate, the sliding block slides in the sliding groove, a nut is arranged at the upper end of the sliding plate, a position adjusting motor is arranged on the base, the output shaft of the position adjusting motor is connected with a fifth lead screw, the fifth lead screw passes through the nut and is threadedly connected, lifting motors are arranged at both ends of the sliding plate, the output shaft of the lifting motor is connected with a sixth lead screw, the sixth lead screw passes through a lifting plate and is threadedly connected, two material taking blocks are arranged on the lifting plate and spaced apart left and right, and an arc-shaped groove for accommodating the oil jacket pipe is arranged at one end of the material taking block.

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