Grooving machine convenient to adjust

Abstract

The utility model relates to the technical field of packaging carton production, and discloses a grooving machine convenient to adjust, which comprises a bottom plate, two first rotating shafts are rotatably arranged in one side of the bottom plate, the outer surfaces of the two first rotating shafts are fixedly sleeved with first rotating wheels, the outer surfaces of the two first rotating wheels are fixedly sleeved with first rubber cylinders, and the first rubber cylinders are fixedly sleeved with second rubber cylinders. A fixing shell is fixedly arranged at the midpoint of the upper end face of the bottom plate, a connecting block is movably embedded in the lower end face of the fixing shell, a plurality of connecting springs are fixedly arranged on the upper end face of the connecting block, and the upper ends of the connecting springs are fixedly arranged on the inner top face of the fixing shell. According to the paperboard conveying device, the feeding box is fixedly arranged on one side of the upper end face of the bottom plate so that a certain number of paperboards can be stored, the paperboards can be conveyed through the first rotating wheel and the second rotating wheel which are rotationally arranged, and meanwhile the adjusting mechanism is arranged on the outer surfaces of the two threaded rods and the two sliding rods in a threaded and sleeving mode so that height adjustment can be conducted.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging carton production, in particular to a conveniently adjustable slotting machine. Background Art

[0002] A carton is a container made of cardboard or paper for holding items, usually used for packaging, transportation and storage of goods. A slotting machine is a device used to make slots on materials such as cartons and paperboards. The slotting machine cuts cartons or paperboards with a knife or die to form slots so that they can be folded and assembled into packaging containers such as cartons or boxes.

[0003] At present, most of the existing carton slotting machines fix the blades at a fixed height, and also fix the position and number of the blades according to the needs. Since different cartons require different numbers and depths of slots, the fixed slotting machines cannot be adjusted according to the usage requirements. Since the cartons that need to be slotted are manually transported to the slotting machine one by one, a more convenient way to transport the cartons cannot be provided. Therefore, the utility model provides a slotting machine that is easy to adjust to solve the problems raised in the above-mentioned background technology. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a conveniently adjustable slotting machine. The cardboard can be transported more conveniently through the set feed box and two No. 1 rotating wheels. At the same time, the adjustment mechanism in the two screws and the screw slide rods in the threaded sleeve can be adjusted according to the needs of the user.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A conveniently adjustable slotting machine comprises a bottom plate, two No. 1 rotating shafts are rotatably arranged inside one side of the bottom plate, the outer surfaces of the two No. 1 rotating shafts are fixedly sleeved with No. 1 rotating wheels, the outer surfaces of the two No. 1 rotating wheels are fixedly sleeved with No. 1 rubber tubes, a fixed shell is fixedly arranged at the midpoint of the upper end surface of the bottom plate, a connecting block is movably embedded in the lower end surface of the fixed shell, a plurality of connecting springs are fixedly arranged on the upper end surface of the connecting block, a plurality of connecting springs are fixedly arranged on the inner top surface of the fixed shell by the upper ends, and a No. 2 rotating wheel is fixedly arranged on the lower end surface of the connecting block;

[0007] A fixing block is fixedly arranged on one side of the upper end surface of the bottom plate near the front end and the rear end, a screw is rotatably arranged on one side of the inner bottom surface of the two fixing blocks, a sliding rod is fixedly arranged on the other side of the inner bottom surface of the two fixing blocks, and an adjustment mechanism is movably sleeved on the outer surface of the two screws and the two sliding rods, and the adjustment mechanism includes a fixed shell, two sliding blocks, a connecting rod, two sliding grooves, two clamping blocks, four threaded holes, two rotating blocks, a transmission motor and two bolts;

[0008] Through the above technical scheme, the rotatable rotating wheel No. 1 can transport the cardboard stored in the feed box, and the friction between the No. 1 rotating wheel and the cardboard can be increased by fixedly sleeved with a No. 1 rubber tube on the outer surface of the No. 1 rotating shaft, and the No. 2 rotating wheel fixedly arranged on the lower end surface of the connecting block can extrude and position the cardboard, and the position of the blade can be adjusted according to the needs of the user by threading an adjustment mechanism between two fixed blocks fixedly arranged on one side of the upper end surface of the bottom plate, and the position of the adjustment mechanism can be adjusted by the two rotatable screws.

[0009] Further, the fixed housing is fixedly arranged on one side of the two sliding blocks, the transmission motor is embedded in the fixed housing, the two rotating blocks are respectively rotatably embedded in one side of the two sliding blocks, the two clamping blocks are respectively fixedly arranged on one side of the two rotating blocks, the connecting rod is clamped between the two clamping blocks, the two bolts are respectively threadedly penetrated at both ends of the connecting rod, the two sliding grooves are respectively provided on the upper end surface and the lower end surface of the connecting rod, and the four threaded holes are respectively provided on the upper end surfaces of the two sliding blocks near the front end and the rear end;

[0010] Through the above technical solution, the connecting rod can be taken out by turning the bolt. At the same time, the user can fix the cutting mechanism on the outer surface of the connecting rod according to needs. Starting the transmission motor can drive the connecting rod to rotate. The adjusting mechanism can be threadedly sleeved on the outer surfaces of the two screws and the two sliding rods through the opened threaded holes. Rotating the two screws can drive the adjusting mechanism to be adjusted.

[0011] Furthermore, a cutting mechanism is clamped on the outer surface of the connecting rod, and the cutting mechanism includes a blade, and a fixing sleeve is fixedly provided at the center of the front end face and the rear end face of the blade, and the upper end face and the lower end face of the two fixing sleeves are embedded with threaded blocks, and the outer surfaces of the four threaded blocks are threadedly sleeved with nuts near the upper ends;

[0012] Through the above technical solution, the cutting mechanism that is clamped can groove the carton, and the cutting mechanism can be removed from the outer surface of the connecting rod by rotating the nut, and the cutting mechanism can also be fixedly sleeved on the outer surface of the connecting rod.

[0013] Furthermore, a feed box is fixedly arranged on one side of the upper end surface of the bottom plate, a storage groove is opened on the upper end surface of the feed box, and a plurality of paperboards are movably arranged in the storage groove;

[0014] Through the above technical solution, the cardboards can be stored in the storage slots provided in the feed box and can be transported more conveniently. The cardboards in the feed box can be transported by rotating the side No. 1 rotating wheel arranged on the upper end surface of the bottom plate.

[0015] Furthermore, a transmission belt is sleeved on the front end of the two No. 1 rotating shafts, a No. 2 auxiliary motor is fixedly arranged on one side of the front end surface of the bottom plate, and an output end of the No. 2 auxiliary motor is fixedly connected to the front end surface of one of the two No. 1 rotating shafts;

[0016] Through the above technical solution, the two No. 1 rotating shafts can be synchronously connected through the transmission belt, and starting the No. 1 auxiliary motor can drive the two No. 1 rotating shafts to rotate.

[0017] Furthermore, a No. 1 auxiliary motor is fixedly arranged at the midpoint of the front end surface of the bottom plate, a No. 2 rotating shaft is rotatably arranged at the midpoint of the upper end surface of the bottom plate, a No. 2 rotating wheel is fixedly sleeved on the outer surface of the No. 2 rotating shaft, a No. 2 rubber tube is fixedly sleeved on the outer surface of the No. 2 rotating wheel, and the output end of the No. 1 auxiliary motor is fixedly connected to the front end surface of the No. 2 rotating shaft;

[0018] Through the above technical solution, the No. 2 rotating wheel fixedly connected to the output end of the No. 2 auxiliary motor can further transport the cardboard. By fixing the No. 2 rubber cylinder on the outer surface of the No. 2 rotating wheel, the friction between the No. 2 rotating wheel and the cardboard can be increased to further improve the conveying effect of the cardboard.

[0019] Furthermore, the upper end surfaces of the two screw rods are fixedly provided with hand wheels, and the lower end surfaces of the bottom plate are fixedly provided with foot supports at the front end and the rear end;

[0020] Through the above technical solution, rotating the handwheel can drive the screw to rotate, and at the same time can drive the adjustment mechanism of the threaded sleeve to perform fixed adjustment, and the provided foot support can support the slotting machine.

[0021] The utility model has the following beneficial effects:

[0022] 1. The utility model proposes a conveniently adjustable slotting machine. By placing the cardboard in the feed box, a certain number of cardboards can be stored. At the same time, the No. 1 rotating wheel fixedly sleeved on the outer surface of the two No. 1 rotating shafts that are rotatably arranged can drive the cardboard at the bottom to be transported. The No. 1 rubber cylinder that is fixedly sleeved can increase the friction between the cardboard and the No. 2 rotating wheel that is movably arranged in the fixed shell can squeeze and position the cardboard being transported. The No. 2 rotating cylinder that is rotatably arranged can also transport the cardboard. The connecting spring fixedly arranged on the upper end surface of the connecting block can improve the squeezing and positioning of the No. 2 rotating wheel and the cardboard.

[0023] 2. The utility model proposes a slotting machine with convenient adjustment. By rotating the screw rods on one side of the two fixed blocks, the adjusting mechanism of the threaded sleeve can be driven to adjust to different heights, so as to open slots of different depths for different cardboards. The connecting rod can be removed from between the two connecting blocks by rotating the bolt. According to the needs of the user, multiple cutting mechanisms can be fixedly sleeved on the outer surface of the connecting rod. At the same time, the position of the cutting mechanism can be fixed by rotating the nut. Starting the transmission motor fixedly set in the fixed shell can drive the cutting mechanism fixedly sleeved on the outer surface of the connecting rod to rotate and cut. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is an axonometric schematic diagram of the utility model;

[0025] Figure 2 It is a front cross-sectional schematic diagram of the utility model;

[0026] Figure 3 It is a top view schematic diagram of the adjustment mechanism of the utility model;

[0027] Figure 4 It is a top view cross-sectional schematic diagram of the adjustment mechanism of the utility model;

[0028] Figure 5 It is a side cross-sectional schematic diagram of the cutting mechanism of the utility model.

[0029] Legend:

[0030] 1. Feed box; 2. Adjustment mechanism; 201. Fixed shell; 202. Sliding block; 203. Connecting rod; 204. Sliding slot; 205. Clamping block; 206. Threaded hole; 207. Rotating block; 208. Transmission motor; 209. Bolt; 3. Fixed block; 4. Bottom plate; 5. Auxiliary motor No. 1; 6. Auxiliary motor No. 2; 7. Foot support; 8. Hand wheel; 9. Screw; 10. Fixed shell; 11. Connecting block; 12. Connecting spring; 13. Storage slot; 14. Cardboard; 15. No. 1 rotating wheel; 16. No. 1 rotating shaft; 17. No. 1 rubber tube; 18. Transmission belt; 19. Sliding rod; 20. No. 2 rotating wheel; 21. No. 2 rotating wheel; 22. No. 2 rotating shaft; 23. No. 2 rubber tube; 24. Cutting mechanism; 2401. Fixed sleeve; 2402. Blade; 2403. Nut; 2404. Threaded block. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] Example

[0033] Reference Figure 1-5 , the utility model provides an embodiment: a conveniently adjustable slotting machine, including a bottom plate 4, two No. 1 rotating shafts 16 are rotatably arranged on one side of the bottom plate 4, which can drive the No. 1 rotating wheel 15 fixedly sleeved to rotate, the outer surfaces of the two No. 1 rotating shafts 16 are fixedly sleeved with No. 1 rotating wheels 15, which can drive the cardboard 14 to be transported, and the outer surfaces of the two No. 1 rotating wheels 15 are fixedly sleeved with No. 1 rubber tubes 17 to increase the friction between the cardboard 14, a fixed shell 10 is fixedly arranged at the midpoint of the upper end surface of the bottom plate 4 so that the connecting block 11 can move therein, and the lower end surface of the fixed shell 10 is movably embedded with a connecting block 11, which can drive the No. 2 rotating wheel 20 to squeeze and position the cardboard 14, and the upper end surface of the connecting block 11 is fixedly arranged with a plurality of connecting springs 12 to improve the positioning effect of the No. 2 rotating wheel 20 on the cardboard 14, and the plurality of connecting springs 12 are fixedly arranged on the top surface of the fixed shell 10 by the upper end, and the No. 2 rotating wheel 20 is fixedly arranged on the lower end surface of the connecting block 11;

[0034] Fixed blocks 3 are fixedly provided on one side of the upper end surface of the base plate 4, near the front end and the rear end, so as to sleeve and support the adjusting mechanism 2; screw rods 9 are rotatably provided on one side of the inner bottom surface of the two fixed blocks 3, so as to drive the threaded sleeve adjusting mechanism 2 to adjust the height; slide rods 19 are fixedly provided on the other side of the inner bottom surface of the two fixed blocks 3, so as to assist the adjusting mechanism 2 in adjusting; the outer surfaces of the two screw rods 9 and the two slide rods 19 are movably sleeved with the adjusting mechanism 2; the adjusting mechanism 2 includes a fixed shell 201, two sliding blocks 202, a connecting rod 203, two sliding grooves 204, two clamping blocks 205, four threaded holes 206, two rotating blocks 207, a transmission motor 208 and two bolts 209.

[0035] The rotatable No. 1 rotating wheel 15 can transport the stored cardboard 14 in the feed box 1. The friction between the No. 1 rotating wheel 15 and the cardboard 14 can be increased by fixedly sleeved with a No. 1 rubber tube 17 on the outer surface of the No. 1 rotating shaft. The No. 2 rotating wheel 20 fixedly arranged on the lower end surface of the connecting block 11 can squeeze and position the cardboard 14. The position of the blade 2402 can be adjusted according to the user's needs by threading an adjustment mechanism 2 between two fixed blocks 3 fixedly arranged on one side of the upper end surface of the bottom plate 4. The two rotatable screws 9 can adjust the position of the adjustment mechanism 2.

[0036] The fixed housing 201 is fixedly arranged on one side of one of the two sliding blocks 202, the transmission motor 208 is embedded in the fixed housing 201, the two rotating blocks 207 are respectively rotatably embedded in one side of the two sliding blocks 202, the two clamping blocks 205 are respectively fixedly arranged on one side of the two rotating blocks 207, the connecting rod 203 is clamped between the two clamping blocks 205, the two bolts 209 are respectively threaded through the two ends of the connecting rod 203, and the two sliding grooves 204 are respectively opened on the upper end surface and On the lower end surface, four threaded holes 206 are respectively opened on the upper end surfaces of the two sliding blocks 202 near the front end and the rear end. The connecting rod 203 can be taken out by rotating the bolt 209. At the same time, the user can fix the cutting mechanism 24 on the outer surface of the connecting rod 203 according to needs. Starting the transmission motor 208 can drive the connecting rod 203 to rotate. The adjusting mechanism 2 can be threadedly sleeved on the outer surfaces of the two screw rods 9 and the two sliding rods 19 through the opened threaded holes 206. Rotating the two screw rods 9 can drive the adjusting mechanism 2 to be adjusted.

[0037] A cutting mechanism 24 is clamped on the outer surface of the connecting rod 203, and the cutting mechanism 24 includes a blade 2402. Fixed sleeves 2401 are fixedly provided at the center of the front end face and the rear end face of the blade 2402. Threaded blocks 2404 are embedded in the upper and lower end faces of the two fixed sleeves 2401. Nuts 2403 are threadedly sleeved on the upper ends of the outer surfaces of the four threaded blocks 2404. The clamped cutting mechanism 24 can groove the carton. The cutting mechanism 24 can be removed from the outer surface of the connecting rod 203 by rotating the nut 2403, and the cutting mechanism 24 can also be fixedly sleeved on the outer surface of the connecting rod 203.

[0038] A feed box 1 is fixedly arranged on one side of the upper end surface of the bottom plate 4, and a storage groove 13 is opened on the upper end surface of the feed box 1. A plurality of cardboards 14 are movably arranged in the storage groove 13. The cardboards 14 are stored in the storage groove 13 opened in the feed box 1, so that the cardboards 14 can be transported more conveniently. The cardboards 14 in the feed box 1 can be transported by a No. 1 rotating wheel 15 rotatably arranged on the upper end surface of the bottom plate 4. A transmission belt 18 is sleeved on the front end of the two No. 1 rotating shafts 16. A No. 2 auxiliary motor 6 is fixedly arranged on one side of the front end surface of the bottom plate 4. The output end of the No. 2 auxiliary motor 6 is fixedly connected to the front end surface of one of the two No. 1 rotating shafts 16. The two No. 1 rotating shafts 16 can be synchronously connected through the transmission belt 18. Starting the No. 1 auxiliary motor 5 can drive the two No. 1 rotating shafts 16 to rotate.

[0039] A No. 1 auxiliary motor 5 is fixedly provided at the midpoint of the front end surface of the bottom plate 4, a No. 2 rotating shaft 22 is rotatably provided at the midpoint of the upper end surface of the bottom plate 4, a No. 2 rotating shaft 22 is fixedly sleeved on the outer surface of the No. 2 rotating shaft 22, and a No. 2 rubber tube 23 is fixedly sleeved on the outer surface of the No. 2 rotating wheel 21. The output end of the No. 1 auxiliary motor 5 is fixedly connected to the front end surface of the No. 2 rotating shaft 22, and the No. 2 rotating wheel 21 fixedly connected to the output end of the No. 2 auxiliary motor 6 can further convey the cardboard 14. By fixing the No. 2 rubber tube 23 on the outer surface of the No. 2 rotating wheel 21, the friction between the cardboard 14 and the cardboard 14 can be increased to further improve the conveying effect of the cardboard 14. Hand wheels 8 are fixedly provided on the upper end surfaces of the two screw rods 9, and foot supports 7 are fixedly provided on both sides of the lower end surface of the bottom plate 4 near the front end and the rear end. Rotating the hand wheel 8 can drive the screw rod 9 to rotate, and at the same time can drive the adjustment mechanism 2 of the threaded sleeve to be fixedly adjusted. The provided foot supports 7 can support the slotting machine.

[0040] During use, first, the user can place a certain number of cardboards 14 in the feed box 1. Secondly, the user starts the No. 2 auxiliary motor 6 to drive the two No. 1 rotating shafts 16 to rotate, and at the same time, can drive the No. 1 rotating wheel 15 fixedly sleeved with a No. 1 rubber tube 17 to transport the lowest cardboard 14. When the transported cardboard 14 passes between the No. 2 rotating wheel 20 and the No. 2 rotating wheel 21, the No. 2 rotating wheel 20 can squeeze and position the cardboard 14 under the action of multiple connecting springs 12. Thirdly, the user can turn the hand wheel 8 to form the depth of the groove as needed, drive the adjusting mechanism 2 to adjust the height to form the required depth of the groove. Finally, the user can fix multiple cutting mechanisms 24 on the outer surface of the connecting rod 203 as needed, and the user can also adjust the spacing of the cutting mechanisms 24 as needed.

[0041] Working principle: When in use, first, the user can place the cardboard 14 in the feed box 1, and then start the No. 2 auxiliary motor 6 to drive the No. 1 rotating wheel 15 fixedly sleeved with the No. 1 rubber tube 17 to transport the cardboard 14. When the cardboard 14 is transported, it passes between the No. 2 rotating wheel 20 and the No. 2 rotating wheel 21, and the cardboard 14 can be squeezed and positioned under the action of the connecting spring 12. Thirdly, the user can turn the hand wheel 8 to adjust the height of the adjusting mechanism 2 according to the depth of the groove as needed to complete the required depth of the groove. Finally, the user can fix the cutting mechanism 24 on the outer surface of the connecting rod 203 as needed, and can also adjust and fix the spacing of the cutting mechanism 24.

[0042] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A conveniently adjustable slotting machine, comprising a bottom plate (4), characterized in that: Two No. 1 rotating shafts (16) are rotatably arranged on one side of the upper end surface of the bottom plate (4); the outer surfaces of the two No. 1 rotating shafts (16) are fixedly sleeved with No. 1 rotating wheels (15); the outer surfaces of the two No. 1 rotating wheels (15) are fixedly sleeved with No. 1 rubber tubes (17); a fixed shell (10) is fixedly arranged at the midpoint of the upper end surface of the bottom plate (4); a connecting block (11) is movably embedded in the lower end surface of the fixing shell (10); a plurality of connecting springs (12) are fixedly arranged on the upper end surface of the connecting block (11); the plurality of connecting springs (12) are fixedly arranged on the inner top surface of the fixing shell (10) at their upper ends; and a No. 2 rotating wheel (20) is fixedly arranged on the lower end surface of the connecting block (11); A fixing block (3) is fixedly arranged on one side of the upper end surface of the bottom plate (4), near the front end and near the rear end; a screw rod (9) is rotatably arranged on one side of the inner bottom surface of the two fixing blocks (3); a sliding rod (19) is fixedly arranged on the other side of the inner bottom surface of the two fixing blocks (3); an adjustment mechanism (2) is movably sleeved on the outer surfaces of the two screw rods (9) and the two sliding rods (19); the adjustment mechanism (2) comprises a fixed housing (201), two sliding blocks (202), a connecting rod (203), two sliding grooves (204), two clamping blocks (205), four threaded holes (206), two rotating blocks (207), a transmission motor (208) and two bolts (209).

2. A conveniently adjustable slotting machine according to claim 1, characterized in that: The fixed housing (201) is fixedly arranged on one side of one of the two sliding blocks (202); the transmission motor (208) is embedded in the fixed housing (201); the two rotating blocks (207) are respectively rotatably embedded in one side of the two sliding blocks (202); the two clamping blocks (205) are respectively fixedly arranged on one side of the two rotating blocks (207); the connecting rod (203) is clamped between the two clamping blocks (205); the two bolts (209) are respectively threadedly penetrated at both ends of the connecting rod (203); the two sliding grooves (204) are respectively provided on the upper end surface and the lower end surface of the connecting rod (203); and the four threaded holes (206) are respectively provided on the upper end surfaces of the two sliding blocks (202) near the front end and the rear end.

3. The conveniently adjustable slotting machine according to claim 1, characterized in that: The outer surface of the connecting rod (203) is clamped with a cutting mechanism (24), and the cutting mechanism (24) comprises a blade (2402). A fixing sleeve (2401) is fixedly provided at the center of the front end face and the rear end face of the blade (2402). The upper end faces and the lower end faces of the two fixing sleeves (2401) are embedded with threaded blocks (2404), and the outer surfaces of the four threaded blocks (2404) are threadedly sleeved with nuts (2403) near the upper ends.

4. The conveniently adjustable slotting machine according to claim 1, characterized in that: A feed box (1) is fixedly arranged on one side of the upper end surface of the bottom plate (4), and a storage groove (13) is opened on the upper end surface of the feed box (1), and a plurality of paperboards (14) are movably arranged in the storage groove (13).

5. The conveniently adjustable slotting machine according to claim 1, characterized in that: The two No. 1 rotating shafts (16) are sleeved with transmission belts (18) near the front end, a No. 2 auxiliary motor (6) is fixedly arranged on one side of the front end surface of the bottom plate (4), and the output end of the No. 2 auxiliary motor (6) is fixedly connected to the front end surface of one of the two No. 1 rotating shafts (16).

6. The conveniently adjustable slotting machine according to claim 1, characterized in that: A first auxiliary motor (5) is fixedly arranged at the midpoint of the front end surface of the bottom plate (4); a second rotating shaft (22) is rotatably arranged at the midpoint of the upper end surface of the bottom plate (4); a second rotating wheel (21) is fixedly sleeved on the outer surface of the second rotating shaft (22); a second rubber tube (23) is fixedly sleeved on the outer surface of the second rotating wheel (21); and an output end of the first auxiliary motor (5) and the front end surface of the second rotating shaft (22) are fixedly connected.

7. The conveniently adjustable slotting machine according to claim 1, characterized in that: The upper end surfaces of the two screw rods (9) are fixedly provided with hand wheels (8), and the lower end surface of the base plate (4) is fixedly provided with foot supports (7) at the front end and the rear end on both sides.

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