CN220717904U

CN220717904U - Double-pushing cutting machine for milk powder can processing

Info

Publication number: CN220717904U
Application number: CN202322487624.8U
Authority: CN
Inventors: 韩寒; 李雷朋; 马志强; 马志宾
Original assignee: Shijiazhuang Xiongyue Packaging Products Co ltd
Current assignee: Shijiazhuang Xiongyue Packaging Products Co ltd
Priority date: 2023-09-13
Filing date: 2023-09-13
Publication date: 2024-04-05
Anticipated expiration: 2033-09-13

Abstract

The utility model relates to the technical field of cutting machines, and provides a double-push cutting machine for processing milk powder cans, which comprises a double-push cutting machine body, wherein a box body with a conveying mechanism is arranged on the double-push cutting machine body, and the double-push cutting machine further comprises: the utility model provides a safety cover, slide mechanism, cutting mechanism, regulation transport mechanism, grinding machanism and elevating system install on the box the safety cover, slide mechanism has a plurality of, every slide mechanism installs the upside of safety cover, cutting mechanism has a plurality of, every slide mechanism's output is installed cutting mechanism installs the inside upside of box regulation transport mechanism, every slide mechanism installs the downside grinding machanism, elevating system installs the protective housing upside has solved the cutter that needs to passivation in the correlation technique and has been dismantled and to polish again, and very trouble has reduced work efficiency problem.

Description

Double-pushing cutting machine for milk powder can processing

Technical Field

The utility model relates to the technical field of cutting machines, in particular to a double-pushing cutting machine for processing milk powder cans.

Background

The milk powder can is processed by the procedures of cutting, reel welding, sterilizing, sealing and the like, the printed iron sheet is cut according to the size requirement, but the abrasion to a cutter is avoided in the cutting process, the passivated cutter is required to be disassembled to polish again, the process is very troublesome, and the working efficiency is reduced.

Disclosure of Invention

The utility model provides a double-pushing cutting machine for processing milk powder cans, which solves the problems that in the related art, a passivated cutter needs to be detached to polish again, the work efficiency is very troublesome and the like.

The technical scheme of the utility model is as follows: the utility model provides a milk powder jar processing is with two cutting machines that push away, includes the push away cutter body, and be equipped with the box that has transport mechanism on the push away cutter body, still include:

the protective cover is arranged on the box body;

the sliding mechanisms are arranged on the upper side of the protective cover;

the cutting mechanism is arranged at the output end of each sliding mechanism;

the adjusting and conveying mechanism is arranged on the upper side inside the box body;

the lower side of each sliding mechanism is provided with the polishing mechanism;

and the lifting mechanism is arranged on the upper side of the protective shell.

Further, the sliding mechanism includes:

the sliding blocks are arranged on the top of the protective cover, sliding rails matched with the sliding blocks are arranged on the protective cover, and the sliding blocks are connected with the sliding rails in a sliding manner through pushing mechanisms;

the telescopic connecting rods are arranged at the bottoms of the sliding blocks, the telescopic connecting rods have telescopic performance, each telescopic connecting rod penetrates through the top of the protective cover and extends to the inside of the box body, and a first opening suitable for sliding of the telescopic connecting rods is formed in the top of the protective cover.

Still further, the cutting machine can include:

the cutting motor is arranged on one side of the protective cover;

the output end of the cutting motor is connected with the cutting rotating shaft, the cutting rotating shaft penetrates through the protective cover, and a sliding block is arranged at one end, far away from the cutting motor, of the cutting rotating shaft through a shaft sleeve;

the cutting rotating shaft is provided with a plurality of cutters, both sides of each cutter are provided with limiting mechanisms, and the top of each limiting mechanism is connected with the output end of the telescopic connecting rod;

wherein, stop gear still includes:

the sleeves are arranged on two sides of each cutter;

and the limiting blocks are sleeved on the outer sides of the sleeves respectively.

Still further, the grinding mechanism includes:

the bottom of each sliding block is provided with the fixing frame, and the top of the protective cover is provided with a second opening suitable for sliding of the fixing frame;

the hydraulic telescopic rods are arranged on the upper side of each fixed frame, the input end of each hydraulic telescopic rod is provided with an air inlet pipe, and the air inlet pipes penetrate through the fixed frames and the sliding blocks and are connected with the air pump;

the output end of each hydraulic telescopic rod is provided with a cross beam, two ends of each cross beam are fixedly connected with the inner wall of the fixed frame, sliding square pipes are symmetrically arranged on two sides of each cross beam, and each sliding square pipe is provided with a first round rod;

the sliding bent pipes are arranged on the lower sides of the fixed frames, each sliding bent pipe is connected with the fixed frame in a sliding mode through a fixed block, a second round rod is arranged on each sliding bent pipe, the second round rod on each sliding bent pipe is connected with the first round rod on each sliding square pipe through a connecting piece, a third opening suitable for sliding of each sliding bent pipe is formed in the bottom of each fixed frame, and a spring is connected between the two sliding bent pipes on each fixed frame;

and the lower side of each sliding elbow is provided with a connecting pipe, one end of the connecting pipe, which is close to the cutter, is provided with a sharpening part, the sharpening part is detachably connected with the connecting pipe, and a gap between the two sharpening parts on each fixed frame corresponds to the cutter.

As a further aspect of the present solution, the lifting mechanism includes:

the first electric push rod is arranged on the upper side of the protective cover through a first base, and the output end of the first electric push rod penetrates through the first base to be connected with the cutting motor;

the second electric putter, the second electric putter passes through the second base and installs the upside of safety cover, and the output of second electric putter runs through the second base with the sliding block is connected.

On the basis of the foregoing aspect, preferably, the pushing mechanism includes:

and one side of each sliding block is provided with a corresponding air cylinder, and the output end of each air cylinder is connected with the corresponding sliding block through a connecting push plate.

Further, the conveying mechanism includes:

the first conveying motor is arranged on one side of the box body;

the first conveyor belt is arranged in the box body, two first conveyor shafts are arranged on the first conveyor belt, the output end of the first conveyor motor is connected with one of the transmission shafts, and through holes corresponding to the first conveyor shafts are formed in two sides of the length direction of the box body;

a second conveying motor installed at one side of the case, and installed at a side remote from the first conveying motor;

the second conveyor belt is arranged at the opposite side of the first conveyor belt inside the box body, two conveying shafts are arranged on the second conveyor belt, and the output end of the second conveying motor is connected with one of the second transmission shafts.

The utility model has the following beneficial effects:

1. according to the utility model, the sliding mechanism is arranged on the cutting mechanism, so that the cutting mechanism is more convenient and labor-saving when adjusting products with different sizes.

2. According to the utility model, the height of the cutting mechanism can be adjusted more conveniently by installing the lifting mechanism.

3. According to the utility model, by installing the polishing mechanism, manual disassembly is not needed when the shearing mechanism needs polishing, so that the working efficiency is improved.

4. According to the utility model, the sliding mechanism, the cutting mechanism, the lifting mechanism and the polishing mechanism are matched with each other, so that the cutting mechanism is more convenient and labor-saving to adjust, and the polishing of the cutter is more trouble-saving and convenient, thereby solving the problems that the passivated cutter needs to be detached to polish again in the related art, and the working efficiency is very troublesome to reduce.

Drawings

The utility model will be described in further detail with reference to the drawings and the detailed description.

FIG. 1 is a schematic view of the structure of the utility model before the dust removing mechanism is installed;

FIG. 2 is a schematic view of the internal structure of the protective cover of the present utility model;

FIG. 3 is an enlarged schematic view of the structure of FIG. 1A according to the present utility model;

FIG. 4 is a schematic view of the polishing mechanism of the present utility model;

FIG. 5 is a schematic diagram of the overall structure of the present utility model;

FIG. 6 is a schematic diagram of the half-section structure of the case of the present utility model;

fig. 7 is an enlarged view of the structure of fig. 5B according to the present utility model.

In the figure: 1. a case; 2. a protective cover; 3. a slide block; 4. a slide rail; 5. a telescopic connecting rod; 6. cutting out a motor; 7. cutting the rotating shaft; 8. a sliding block; 9. a cutter; 10. a sleeve; 11. a limiting block; 12. a cross bar; 13. a transmission longitudinal bar; 14. a transfer wheel; 15. a fixed frame; 16. a hydraulic telescopic rod; 17. an air inlet pipe; 18. a cross beam; 19. sliding square tubes; 20. a first round bar; 21. sliding the elbow; 22. a fixed block; 23. a second round bar; 24. a connecting piece; 25. a spring; 26. a connecting pipe; 27. a knife sharpening unit; 28. a first electric push rod; 29. a first base; 30. a second electric push rod; 31. a second base; 32. a cylinder; 33. a push plate; 34. a first transfer motor; 35. a first conveyor belt; 36. a first conveying shaft; 37. a second transfer motor; 38. a second conveyor belt; 39. a second conveying shaft; 40. bending a rod; 41. a first dust hood; 42. a second dust hood; 43. a rotation shaft; 44. a dust collection pipeline; 45. a concentrating box; 46. a dust remover; 47. a booster fan.

Detailed Description

The technical solutions of the embodiments of the present utility model will be clearly and completely described below in conjunction with the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Embodiment 1, as shown in fig. 1-7, this embodiment provides a milk powder jar processing is with two cutter that push away, including the cutter body that pushes away, and be equipped with box 1 that has transport mechanism on the cutter body that pushes away, its characterized in that still includes: the utility model provides a safety cover 2, slide mechanism, cutting mechanism, regulation transport mechanism, grinding machanism and elevating system, wherein, install safety cover 2 on the box 1, slide mechanism has a plurality of, and every slide mechanism installs the upside of safety cover 2 for adjust cutting mechanism, cutting mechanism has a plurality of, every slide mechanism's output is installed cutting mechanism can adjust when tailorring not unidimensional product, and transport mechanism is adjusted to the inside upside of box 1, and grinding machanism is installed to every slide mechanism downside for polish cutting mechanism, elevating system installs the upside of protecting the shell for adjust cutting mechanism's height.

Specifically, slide mechanism includes, a plurality of slider 3, every slider 3 installs at the top of the safety cover 2, and be equipped with on the safety cover 2 with every slider 3 assorted slide rail 4, every slider 3 passes through pushing mechanism and slide rail 4 sliding connection, wherein pushing mechanism includes, cylinder 32, corresponding cylinder 32 is installed to one side of every slider 3, every cylinder 32 output is connected with corresponding slider 3 through connecting push pedal 33, a plurality of telescopic connecting rod 5 are installed to every slider 3 bottom, telescopic connecting rod 5 has the flexible performance, and every telescopic connecting rod 5 runs through the safety cover 2 top and extends to box 1 inside, the safety cover 2 top is equipped with the first opening that is fit for telescopic connecting rod 5 is gliding, be used for adjusting cutting mechanism, wherein, the cutter can include cutting motor 6, cutting motor 6 installs one side at the safety cover 2, cutting motor 6's output is connected with tailorring pivot 7, and tailorring pivot 7 runs through the safety cover 2, cutting pivot 7 is kept away from cutting motor 6's one end and is installed sliding block 8 through the axle sleeve, install a plurality of cutters 9 on tailorring pivot 7, and the sleeve 10 is all installed to the both sides of every cutter 9, every sleeve 10 is installed, every sleeve 10 is used for 9 is embolia bit 9 to the dislocation preventing, the cutter is all to be used for 9 to put into the outside, the cutter is put into the dislocation.

Further comprises: the adjusting and conveying mechanism comprises a cross rod 12, two cross rods 12 are arranged in the box body 1, each cross rod 12 is parallel to the width direction of the box body 1, a plurality of conveying longitudinal rods are arranged between the two cross rods 12, each conveying longitudinal rod is in sliding connection with the two cross rods 12, clamping grooves corresponding to each driving longitudinal rod 13 are formed in the two cross rods 12, the driving longitudinal rods 13 can be adjusted while the cutter 9 is adjusted to prevent the damage of props to the driving longitudinal rods 13, a plurality of conveying wheels 14 are arranged on the upper side of each driving longitudinal rod 13 to assist products to slide and cut, a corresponding polishing mechanism comprises a fixing frame 15, a fixing frame 15 is arranged at the bottom of each sliding block 3, a second opening suitable for the sliding of the fixing frame 15 is formed in the top of the protective cover 2, a hydraulic telescopic rod 16 is arranged on the upper side of each fixing frame 15, an air inlet pipe 17 is arranged at the input end of the hydraulic telescopic rod 16, the air inlet pipe 17 penetrates through the fixed frame 15 and the sliding block 3 to be connected with the air pump, the air pressure of the air pump is used for pushing the hydraulic telescopic rods 16 to obtain a telescopic effect, the output end of each hydraulic telescopic rod 16 is provided with a cross beam 18, the two ends of each cross beam 18 are fixedly connected with the inner wall of the fixed frame 15, sliding square pipes 19 are symmetrically arranged on the two sides of each cross beam 18, a first round rod 20 is arranged on each sliding square pipe 19, two sliding bent pipes 21 are arranged on the lower side of each fixed frame 15, a second round rod 23 is arranged on each sliding bent pipe 21, the second round rod 23 on the sliding bent pipe 21 is connected with the first round rod 20 on the sliding square pipe 19 through a connecting piece 24, each sliding bent pipe 21 is in sliding connection with the fixed frame 15 through a fixed block 22, a third opening suitable for sliding of the sliding bent pipe 21 is arranged at the bottom of each fixed frame 15, a spring 25 is connected between the two sliding bent pipes 21 on each fixed frame 15, a connecting pipe 26 is arranged at the lower side of each sliding bent pipe 21, a knife sharpening part 27 is arranged at the end of the connecting pipe 26, which is close to the knife 9, the knife sharpening part 27 is detachably connected with the connecting pipe 26, a gap between the two knife sharpening parts 27 on each fixed frame 15 corresponds to the knife 9, the knife 9 is convenient to polish and replace, the lifting mechanism comprises a first electric push rod 28, the first electric push rod 28 is arranged at the upper side of the protective cover 2 through a first base 29, the output end of the first electric push rod 28 is connected with the cutting motor 6 through the first base 29, a second electric push rod 30 is arranged at the upper side of the protective cover 2 through a second base 31, the output end of the second electric push rod 30 is connected with the sliding block 8 through the second base 31, the conveying mechanism comprises a first conveying motor 34, the first conveying motor 34 is arranged on one side of the box body 1, a first conveying belt 35 is arranged inside the box body 1, two first conveying shafts 36 are arranged on the first conveying belt 35, the output end of the first conveying motor 34 is connected with one transmission shaft, through holes corresponding to the first conveying shafts 36 are formed in two sides of the length direction of the box body 1, a second conveying motor 37 is arranged on one side of the box body 1, the second conveying motor 37 is arranged on one side far away from the first conveying motor 34, a second conveying belt 38 is arranged on the opposite side of the first conveying belt 35 inside the box body 1, two conveying shafts are arranged on the second conveying belt 38, and the output end of the second conveying motor 37 is connected with one second transmission shaft.

In this embodiment, the working principle of the double-push cutting machine for processing milk powder cans is that before cutting the milk powder cans, the cutter 9 is adjusted according to the size of the milk powder cans, the push plate 33 is driven by the air cylinder 32 to drive the sliding block 3 to be adjusted, when the cutter 9 just corresponds to the transmission longitudinal rod 13, the transmission longitudinal rod 13 can be pushed to be slidingly adjusted on the transverse rod 12, the double-push cutting machine is driven by the first electric push rod 28 and the second electric push rod 30 to drive the cutting motor 6 and the cutting rotating shaft 7 to be highly adjusted, the cutting rotating shaft 7 can drive the cutter 9 to be highly adjusted, the telescopic connecting rod 5 is stretched and contracted when the cutter 9 is lifted and contracted, the cutter 9 is driven by the first conveying motor 34 to drive the first conveying belt 35 to convey the milk powder cans, the cutter 9 drives the second conveying shaft 39 and the second conveying belt 38 through the second conveying motor 37 when the cutter 9 is exactly corresponding to the transmission longitudinal rod 13, at the moment, when the cutter 9 is passivated, the air pump is used for feeding air into the air inlet pipe 17, the hydraulic telescopic rod 16 is pushed to drive the transverse beam 18 to be downwards moved, the connecting piece 24 drives the bent pipe 21 to be slidingly moved towards the center of the bent pipe 21, the bent pipe 21 is driven by the sliding rod 21 to be slidingly moved towards the connecting rod 21, and the bent pipe 21 is prevented from being slidingly moved towards the two sides of the connecting rod 21, and the bent pipe 21 is slidingly moved towards the connecting rod 21 is guaranteed to be normally, and the bent pipe 21 is slidingly moved towards the bent pipe 21 is moved towards the connecting rod 21, and the bent pipe 21 is prevented from being slidingly moved towards the left to be 21.

In example 2, as shown in fig. 5 to 7, based on the same concept as in example 1, residues are generated when the cutter 9 is polished or when the iron sheet of the milk powder can is cut, and a double push cutter for processing the milk powder can is proposed for cleaning the residues;

specifically, the first suction hoods 41 are connected to two sides of the protection cover 2 in the length direction through the bent rods 40, the rotating shafts 43 are installed below each suction hood, when the milk powder can iron sheet passes through the first suction hoods 41, the milk powder can iron sheet is flattened through the first suction hoods 41 and the rotating shafts 43, a plurality of suction holes are formed in one side, facing the cutter 9, of each first suction hood 41, the suction holes at the bottommost side of each first suction hood 41 are vertically installed with the first suction hoods 41, the rest suction holes are inclined downwards, the residue absorption effect is guaranteed, dust absorption pipelines 44 are communicated with the top of each first suction hood 41, the dust absorption pipelines 44 are communicated with the collecting box 45 installed above the protection cover 2, the collecting box 45 is communicated with the dust collectors 46, the booster fan 47 is installed on one side of the dust collectors 46, the second suction hoods 42 are installed on the lower side of the inner part of the corresponding box 1, and the dust hoods are communicated with the dust collectors 46.

In this embodiment, the booster fan 47 is driven outside the dust collector 46, so that suction is generated inside the dust collector 46, the first dust hood 41 absorbs the residues and then enters the dust collector 46 for adsorption through the dust collection pipeline 44 and the container 45, and at the same time, the second dust hood 42 absorbs the dropped residues and enters the dust collector 46 for adsorption.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims

1. The utility model provides a milk powder jar processing is with two cutting machines that push away, includes the push away cutter body to be equipped with box (1) that have transport mechanism on the push away cutter body, its characterized in that still includes:

the protection cover (2) is arranged on the box body (1), and the protection cover (2) is arranged on the box body;

the sliding mechanisms are arranged on the upper side of the protective cover (2);

the cutting mechanism is provided with a plurality of sliding mechanisms, and the output end of each sliding mechanism is provided with the cutting mechanism;

the adjusting and conveying mechanism is arranged on the upper side inside the box body (1);

and the lifting mechanism is arranged on the upper side of the protective cover (2).

2. The double push cutter for processing milk powder cans according to claim 1, wherein the slide mechanism comprises:

the sliding blocks (3) are arranged, each sliding block (3) is arranged at the top of the protective cover (2), a sliding rail (4) matched with each sliding block (3) is arranged on the protective cover (2), and each sliding block (3) is in sliding connection with the sliding rail (4) through a pushing mechanism;

the telescopic connecting rods (5), every slider (3) bottom is installed a plurality of telescopic connecting rods (5), telescopic connecting rods (5) have flexible performance, and every telescopic connecting rods (5) run through safety cover (2) top extends to inside box (1), safety cover (2) top is equipped with and is fit for telescopic connecting rods (5) gliding first opening.

3. The double push cutter for processing milk powder cans according to claim 2, wherein the cutting mechanism comprises:

a cutting motor (6), wherein the cutting motor (6) is arranged at one side of the protective cover (2);

the cutting motor comprises a cutting rotating shaft (7), wherein the output end of the cutting motor (6) is connected with the cutting rotating shaft (7), the cutting rotating shaft (7) penetrates through the protective cover (2), and a sliding block (8) is arranged at one end, far away from the cutting motor (6), of the cutting rotating shaft (7) through a shaft sleeve;

the cutting rotating shaft (7) is provided with a plurality of cutters (9), two sides of each cutter (9) are provided with limiting mechanisms, and the top of each limiting mechanism is connected with the output end of the telescopic connecting rod (5);

wherein, stop gear still includes:

the sleeves (10) are arranged on two sides of each cutter (9);

the limiting blocks (11) are sleeved on the outer sides of the sleeves (10).

4. A push-push cutter for processing milk powder cans according to claim 3, wherein the regulating and conveying mechanism comprises:

the cross bars (12) are arranged in the box body (1), and each cross bar (12) is parallel to the width direction of the box body (1);

a plurality of transmission longitudinal rods are arranged between the two transverse rods (12), each transmission longitudinal rod is in sliding connection with the two transverse rods (12), clamping grooves corresponding to each transmission longitudinal rod (13) are formed in the two transverse rods (12), and a plurality of conveying wheels (14) are arranged on the upper side of each transmission longitudinal rod (13).

5. The double push cutter for processing milk powder cans as claimed in claim 4, wherein the polishing mechanism comprises:

the bottom of each sliding block (3) is provided with the fixed frame (15), and the top of the protective cover (2) is provided with a second opening suitable for sliding of the fixed frame (15);

the hydraulic telescopic rods (16) are arranged on the upper side of each fixed frame (15), the input end of each hydraulic telescopic rod (16) is provided with an air inlet pipe (17), and the air inlet pipes (17) penetrate through the fixed frames (15) and the sliding blocks (3) to be connected with the air pump;

the output end of each hydraulic telescopic rod (16) is provided with a cross beam (18), two ends of each cross beam (18) are fixedly connected with the inner wall of the fixed frame (15), sliding square pipes (19) are symmetrically arranged on two sides of each cross beam (18), and each sliding square pipe (19) is provided with a first round rod (20);

the sliding bent pipes (21), two sliding bent pipes (21) are arranged on the lower side of each fixed frame (15), each sliding bent pipe (21) is connected with the fixed frame (15) in a sliding mode through a fixed block (22), a second round rod (23) is arranged on each sliding bent pipe (21), the second round rod (23) on each sliding bent pipe (21) is connected with the first round rod (20) on the sliding square pipe (19) through a connecting piece (24), a third opening suitable for sliding of each sliding bent pipe (21) is formed in the bottom of each fixed frame (15), and a spring (25) is connected between the two sliding bent pipes (21) on each fixed frame (15);

connecting pipes (26), wherein each connecting pipe (26) is installed on the lower side of each sliding elbow (21), a knife sharpening part (27) is installed at one end, close to a knife (9), of each connecting pipe (26), each knife sharpening part (27) is detachably connected with each connecting pipe (26), and a gap between two knife sharpening parts (27) on each fixed frame (15) corresponds to the knife (9).

6. The double push cutter for processing milk powder cans as claimed in claim 5, wherein the lifting mechanism comprises:

the first electric push rod (28) is arranged on the upper side of the protective cover (2) through a first base (29), and the output end of the first electric push rod (28) penetrates through the first base (29) to be connected with the cutting motor (6);

the second electric push rod (30), the second electric push rod (30) is installed through second base (31) the upside of safety cover (2), and the output of second electric push rod (30) runs through second base (31) with slider (8) are connected.

7. The double push cutter for milk powder can processing of claim 6, wherein the push mechanism comprises:

and one side of each sliding block (3) is provided with a corresponding air cylinder (32), and the output end of each air cylinder (32) is connected with the corresponding sliding block (3) through a connecting push plate (33).

8. The double push cutter for processing milk powder cans as claimed in claim 7, wherein the conveying mechanism comprises:

a first conveying motor (34), wherein the first conveying motor (34) is arranged on one side of the box body (1);

the first conveyor belt (35), the first conveyor belt (35) is installed inside the box body (1), two first conveyor shafts (36) are arranged on the first conveyor belt (35), the output end of the first conveyor motor (34) is connected with one of the first conveyor shafts (36), and through holes corresponding to the first conveyor shafts (36) are formed in two sides of the length direction of the box body (1);

a second conveyance motor (37), the second conveyance motor (37) being mounted on one side of the casing (1), and the second conveyance motor (37) being mounted on a side remote from the first conveyance motor (34);

the second conveyor belt (38), the second conveyor belt (38) is installed inside the box (1) and on the opposite side of the first conveyor belt (35), and two second conveying shafts (39) are installed on the second conveyor belt (38), and the output end of the second conveying motor (37) is connected with one of the second conveying shafts (39).