CN217729640U - Forming mechanism of plastic forming machine - Google Patents

Abstract

The utility model discloses a forming mechanism of plastic forming machine relates to plastic forming machine technical field, including support frame, plastic film, location conveying mechanism and cutting mechanism, the inside of direction crossbeam rotates respectively along length direction and installs a plurality of and be the last driving wheel and the lower driving wheel that linear array set up, and the lower surface of pressing the frame is provided with the slipmat of square frame type, and sliding rack fixed mounting is in the lower surface of cutting knife. This forming mechanism is through location conveying mechanism's setting, can prevent effectively that plastic film slip transmission's in-process from taking place the off normal, guarantee fashioned quality, do benefit to processing production, through hold-down mechanism's setting, can prevent effectively that the condition that causes the skew to the plastic film because dragging of compound die in-process from taking place, through cutting mechanism's setting, the purpose of automatic cutout is carried out to the plastic film after the formation processing is accomplished in the realization, can reduce cutting assembly's production and later stage use cost to a certain extent.

Description

Forming mechanism of plastic forming machine

Technical Field

The utility model relates to a plastic molding machine technical field specifically is a plastic molding machine's forming mechanism.

Background

Plastic molding processing equipment is developed on the basis of rubber machinery and a metal die casting machine. Since the injection molding process of polymers and simple molding equipment appeared in the 70 th century in 19 th century, the development of the polymer as an industry was not accelerated until the 30 th century, and plastic molding equipment was gradually commercialized, and injection molding, extrusion molding, blow molding, compression molding, and blister molding became industrial processing methods. The plastic-sucking forming machine is an important device in plastic-sucking forming, and is a machine for sucking heated and plasticized PVC, PE, PP, PET, HIPS and other thermoplastic plastic coiled materials into high-grade packing boxes, frames and other products in various shapes. The molding mechanism is an indispensable mechanism on the plastic suction molding machine.

Chinese utility model patent publication No. CN213798052U discloses a heating forming mechanism of plastic uptake machine, including supporting mechanism, heating mechanism and pressure holding forming mechanism, though this utility model makes heating and shaping go on in step, improve shaping machining efficiency and quality, but lack the location direction function in this utility model, there is the possibility of off normal in-process that the plastic film passed from forming mechanism, influence fashioned quality, be unfavorable for processing production, and when this utility model provides an go up mould and lower mould subassembly and extrude the plastic film, because contain terrace die and die in the subassembly, consequently can cause to drag the plastic film, the in-process of dragging can cause the skew to the plastic film, also can cause the influence to fashioned quality, this utility model discloses still need outside cutting assembly to cut after the shaping is accomplished simultaneously, and outside cutting assembly still needs drive equipments such as electric telescopic handle or pneumatic cylinder to drive, and then still need drive corresponding circuit or hydraulic line to the drive arrangement, cause cutting assembly's production and use cost higher, consequently there is certain space of improving still.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a plastic molding machine's forming mechanism has solved the problem of proposing among the above-mentioned background art.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the utility model provides a forming mechanism of plastic molding machine, includes support frame, plastic film, location conveying mechanism, dust removal mechanism and cutting mechanism, location conveying mechanism follows direction of delivery fixed mounting in the inside of support frame, dust removal mechanism install in location conveying mechanism's feed end, cutting mechanism install in location conveying mechanism's discharge end, the internally mounted of support frame has heating mechanism and presses and holds forming mechanism, and heating mechanism holds forming mechanism along direction of delivery with pressing and sets gradually, and heating mechanism is including setting up in the lower electric plate of last electric plate on plastic film upper portion and plastic film lower part, and presses and hold forming mechanism including setting up in the cope match-plate pattern on plastic film upper portion and the lower bolster of plastic film lower part.

In order to realize going up the purpose of electric plate and cope match-plate pattern downstream, this application provides a technical scheme, actuating mechanism is installed to the interior roof of support frame, goes up actuating mechanism and includes extensible member and last guide arm, goes up the extensible member and all is symmetry form fixed mounting in the interior roof both sides of support frame with last guide arm, goes up the flexible end of extensible member down, and the lower extreme fixed mounting of flexible end has the slip to set up in the outside horizontal pole that just sets up along direction of delivery of last guide arm, go up the electric plate and install respectively in the horizontal pole with the cope match-plate pattern.

In order to realize the mesh of lower electric plate and lower bolster rebound, this application provides a technical scheme, actuating mechanism is installed down to the inner diapire of support frame, and actuating mechanism includes down extensible member and lower guide arm down, and lower extensible member all is symmetry form fixed mounting in the inner diapire both sides of support frame with lower guide arm, and the flexible end of lower extensible member is up, and the upper end fixed mounting of flexible end has to slide and set up in the outside diaphragm that just follows direction of delivery and set up of lower guide arm, electric plate and lower bolster are installed respectively in the diaphragm down.

In order to prevent the plastic film from taking place the off normal from the in-process that the forming mechanism passed, the application provides a technical scheme, location conveying mechanism includes that section shape is L type and follows the direction of delivery setting's guide beam and install the servo motor in the guide beam outside, the quantity of guide beam is two, two guide beams are front and back symmetric distribution, and the inside of guide beam rotates respectively along length direction and installs a plurality of upper drive wheel and the lower drive wheel that is the linear array setting, be the longitudinal symmetry setting between upper drive wheel and the lower drive wheel, and the upper conveyer belt of butt in the plastic film upper surface is installed in the outside transmission of upper drive wheel, the lower conveyer belt of butt in the plastic film lower surface is installed in the outside transmission of lower drive wheel.

In order to drive the operation of location conveying mechanism, this application provides a technical scheme, the equal fixed mounting in outside of the last drive wheel that is located two tip of conveyer belt on each direction crossbeam has driven gear, and the equal fixed mounting in outside of the lower drive wheel that is located two tip of conveyer belt down on each direction crossbeam has the driving gear with driven gear engaged with, and servo motor's output and one of them lower drive wheel fixed connection who installs the driving gear.

In order to clean the surface of plastic film, this application provides a technical scheme, dust removal mechanism includes two depression bars of fixed mounting in two guiding beam one ends, and two depression bars set up respectively in the upper and lower below of plastic film, and the lower surface of top depression bar and the upper surface of below depression bar all install the cleaning brush of butt respectively in plastic film upper surface and lower surface.

In order to prevent that the in-process of compound die from leading to the plastic film to take place the skew, this application provides a technical scheme, still includes hold-down mechanism, and the cope match-plate pattern is formed by two upper and lower rectangular plate combinations, and its cross-section is "protruding" font structure, hold-down mechanism presses frame and a plurality of to follow the sliding shaft of vertical slidable mounting in cope match-plate pattern upper portion rectangular plate four corners department including setting up the square frame type that sets up under the cope match-plate pattern, and the lower surface of pressing the frame is provided with the slipmat of square frame type, the lower extreme and the pressure frame fixed connection of sliding shaft, and the outside of sliding shaft has cup jointed buffer spring, buffer spring's upper end butt in the four corners department of the upper portion rectangular plate of cope match-plate pattern, and buffer spring's lower extreme butt in pressing the frame.

In order to reduce the production and use cost of cutting assembly, this application provides a technical scheme, cutting mechanism installs in the inside downside of support frame, and cutting mechanism includes gear and cutting knife, the downside of support frame has the bracing piece along vertical fixed mounting, and the upper end welding of bracing piece has the fixed rack that sets up in the gear upside, the outside logical groove of cup jointing in the bracing piece has been seted up to inside one side of diaphragm, and gear revolve installs in the inside that leads to the groove, and one side meshing of gear is connected with along vertical slip set up in the slip rack that leads to the inslot, and slip rack fixed mounting is in the lower surface of cutting knife, and the cutting knife butt is in the outside of lower bolster, and the lower part welding of cutting knife has and is the vertical guide shaft that runs through and peg graft in the diaphragm inside.

The utility model provides a plastic forming machine's forming mechanism possesses following beneficial effect:

1. according to the forming mechanism of the plastic forming machine, through the arrangement of the positioning conveying mechanism, the lower conveying belt is driven to rotate clockwise and the conveying belt is driven to rotate anticlockwise, so that the plastic film can be driven to intermittently slide rightwards along the guide cross beam, the plastic film can be ensured to slide along a straight line through the guide of the guide cross beam and the matched conveying of the lower conveying belt and the upper conveying belt, the deviation of the plastic film in the sliding conveying process can be effectively prevented, the forming quality is ensured, and the processing production is facilitated;

2. according to the forming mechanism of the plastic forming machine, through the arrangement of the pressing mechanism, in the process of die assembly of the upper die plate and the lower die plate and compression forming of the plastic film, the plastic film is tightly pressed on the upper surface of the lower die plate through the pressing frame and the anti-slip pad, so that the plastic film is tightly pressed and fixed before forming operation of the plastic film is realized, the situation that the plastic film is deviated due to pulling in the die assembly process can be effectively prevented, and the forming quality is further ensured;

3. this plastic forming machine's forming mechanism, through cutting mechanism's setting, can cut the tight plastic film of clamp between lower bolster and the cope match-plate pattern, realize carrying out automatic cutout's purpose to the plastic film after the contour machining accomplishes, no longer need outside cutting assembly to cut, also no longer need use drive arrangement drives such as electric telescopic handle or pneumatic cylinder, consequently also need not install corresponding circuit or hydraulic line, can reduce cutting assembly's production and later stage use cost to a certain extent.

Drawings

Fig. 1 is a schematic front perspective view of a molding mechanism of the plastic molding machine of the present invention;

fig. 2 is a schematic rear perspective view of the forming mechanism of the plastic forming machine of the present invention;

fig. 3 is a schematic front sectional view of the forming mechanism of the plastic forming machine of the present invention;

FIG. 4 is an enlarged schematic view of the structure at A in FIG. 3 according to the present invention;

fig. 5 is a schematic side sectional view of the cutting mechanism of the present invention;

fig. 6 is a schematic perspective view of the positioning conveying mechanism of the present invention;

fig. 7 is a schematic view of a partial cross-sectional structure of the positioning conveying mechanism of the present invention;

fig. 8 is a schematic perspective view of the pressing mechanism of the present invention.

In the figure: 1. a support frame; 2. a lower telescoping piece; 3. a lower guide rod; 5. a plastic film; 6. a dust removal mechanism; 601. a pressure lever; 602. a cleaning brush; 8. an upper telescoping member; 9. electrifying an electric heating plate; 10. a pressing mechanism; 1001. a sliding shaft; 1002. a buffer spring; 1003. pressing the frame; 1004. a non-slip mat; 11. a transverse plate; 12. a lower electric heating plate; 13. a lower template; 14. a positioning and conveying mechanism; 1401. a guide beam; 1402. a lower driving wheel; 1403. a lower conveyor belt; 1404. a driving wheel is arranged; 1405. an upper conveying belt; 1406. a servo motor; 1407. a driven gear; 1408. a driving gear; 15. a cutting mechanism; 1501. a support bar; 1502. a guide shaft; 1503. a sliding rack; 1504. a gear; 1505. a cutting knife; 1506. fixing a rack; 16. an upper guide rod; 17. a cross bar; 18. and (5) loading the template.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Example 1

Referring to fig. 1 to 3, fig. 6 and fig. 7, the present invention provides a technical solution: a forming mechanism of a plastic forming machine comprises a support frame 1, a plastic film 5, a positioning conveying mechanism 14, a dust removing mechanism 6 and a cutting mechanism 15, wherein the positioning conveying mechanism 14 is fixedly arranged inside the support frame 1 along the conveying direction, the dust removing mechanism 6 is arranged at the feeding end of the positioning conveying mechanism 14, the cutting mechanism 15 is arranged at the discharging end of the positioning conveying mechanism 14, a heating mechanism and a pressing forming mechanism are arranged inside the support frame 1 and are sequentially arranged along the conveying direction, the heating mechanism comprises an upper electric heating plate 9 arranged on the upper portion of the plastic film 5 and a lower electric heating plate 12 arranged on the lower portion of the plastic film 5, the pressing forming mechanism comprises an upper template 18 arranged on the upper portion of the plastic film 5 and a lower template 13 arranged on the lower portion of the plastic film 5, an upper driving mechanism is arranged on the inner top wall of the support frame 1 and comprises an upper telescopic part 8 and an upper guide rod 16, go up extensible member 8 and upper guide arm 16 and all be symmetry form fixed mounting in the interior roof both sides of support frame 1, go up the flexible end of extensible member 8 down, and the lower extreme fixed mounting of flexible end has the horizontal pole 17 that slides and set up in upper guide arm 16 outside and set up along direction of delivery, go up electric plate 9 and upper die plate 18 and install respectively in horizontal pole 17, actuating mechanism down is installed to the inner bottom wall of support frame 1, actuating mechanism includes lower extensible member 2 and lower guide arm 3 down, lower extensible member 2 and lower guide arm 3 all are symmetry form fixed mounting in the inner bottom wall both sides of support frame 1, the flexible end of lower extensible member 2 up, and the upper end fixed mounting of flexible end has the diaphragm 11 that slides and set up in the outside of lower guide arm 3 and set up along direction of delivery, lower electric plate 12 and lower bolster 13 are installed respectively in diaphragm 11, location conveying mechanism 14 includes that the cross section shape is L type and along direction set up guide crossbeam 1401 and install in guide crossbeam 1401 outside guide crossbeam The dust removal mechanism 6 comprises two compression bars 601 fixedly arranged at one end of the two guide beams 1401, the two compression bars 601 are respectively arranged above and below the plastic film 5, and the lower surface of the upper compression bar 601 and the lower surface of the lower compression bar 601 above and below are respectively provided with a brush for cleaning the upper surface 602 of the plastic film 5.

When the plastic film forming machine is used, when the output end of the servo motor 1406 intermittently rotates clockwise, the lower conveying belt 1403 can be driven to rotate clockwise through the lower driving wheel 1402, and meanwhile, the driven gear 1407 and the upper driving wheel 1404 can be driven to rotate anticlockwise through the driving gear 1408, so that the upper conveying belt 1405 can be driven to rotate anticlockwise, and the plastic film 5 is driven to intermittently slide rightwards along the guide cross beam 1401, and the plastic film 5 can be ensured to slide along a straight line through the guide of the guide cross beam 1401 and the matched transmission of the lower conveying belt 1403 and the upper conveying belt 1405, so that the deviation of the plastic film 5 in the sliding transmission process can be effectively prevented, the forming quality is ensured, and the plastic film forming machine is favorable for processing and production; after the plastic film 5 is conveyed to a corresponding station, the upper electric heating plate 9 can be controlled to move downwards by controlling the telescopic end of the upper telescopic part 8 to extend downwards and the telescopic end of the lower telescopic part 2 to extend upwards respectively, and the lower electric heating plate 12 can move upwards, so that the upper electric heating plate 9 and the lower electric heating plate 12 clamp and heat the plastic film 5, meanwhile, the upper template 18 can be driven to move downwards, the lower template 13 can move upwards, the die assembly process can be completed, the plastic film 5 can be subjected to press forming, after the heating and forming are completed, the upper electric heating plate 9 and the upper template 18 can be controlled to move upwards respectively through the upper telescopic part 8 and the lower telescopic part 2, the lower electric heating plate 12 and the lower template 13 can move downwards, after the formed plastic film 5 is cooled, the plastic film 5 can be driven to move rightwards for a certain distance through the positioning conveying mechanism 14, and the heating and die assembly forming actions can be repeated.

Example 2

Referring to fig. 1 to 3 and 8, the present invention provides a technical solution: the utility model provides a forming mechanism of plastic molding machine, hold-down mechanism 10 is including setting up in the square frame type pressure frame 1003 and a plurality of along the slip axle 1001 of vertical slidable mounting in cope match-plate pattern 18 four corners department under cope match-plate pattern 18, the lower surface of pressing frame 1003 is provided with the slipmat 1004 of square frame type, the lower extreme and the pressure frame 1003 fixed connection of slip axle 1001, and the outside of slip axle 1001 has cup jointed buffer spring 1002, buffer spring 1002's upper end butt in the four corners department of the upper portion rectangular plate of cope match-plate pattern 18, and buffer spring 1002's lower extreme butt in pressure frame 1003.

When the plastic film forming die is used, when the upper die plate 18 and the lower die plate 13 are matched and the plastic film 5 is subjected to press forming, and when the male die on the upper die plate 18 is still in contact with the plastic film 5, the lower die plate 13 firstly pushes against the lower surface of the plastic film 5, then the pressing frame 1003 is also pressed on the upper surface of the plastic film 5 through the anti-slip pad 1004, then the upper die plate 18 continuously moves downwards and the male die is gradually contacted with the plastic film 5 and inserted into the female die, so that the upper die plate 18 continuously moves downwards on the sliding shaft 1001, the buffer spring 1002 is extruded in the process until the upper die plate 18 and the lower die plate 13 are matched and stops moving downwards, at the moment, the plastic film 5 is tightly pressed on the upper surface of the lower die plate 13 through the pressing frame 1003 and the anti-slip pad 1004 under the action of the rebounding force of the buffer spring 1002, the plastic film 5 is tightly pressed and fixed before the plastic film 5 is formed, the plastic film 5 is effectively prevented from being deviated due to pulling in the matching process, and the forming quality is further ensured.

Example 3

Referring to fig. 1 to 5, the present invention provides a technical solution: the utility model provides a forming mechanism of plastic molding machine, cutting mechanism 15 installs in the inside downside of support frame 1, and cutting mechanism 15 includes gear 1504 and cutting knife 1505, the downside of support frame 1 has bracing piece 1501 along vertical fixed mounting, the upper end welding of bracing piece 1501 has the fixed rack 1506 that sets up in the gear 1504 upside, the inside one side of diaphragm 11 is seted up and is cup jointed the logical groove outside bracing piece 1501, gear 1504 rotates and installs in the inside of logical groove, and one side meshing of gear 1504 is connected with along vertical slip set up the slip rack 1503 in logical groove, slip rack 1503 fixed mounting is in the lower surface of cutting knife 1505, cutting knife 1505 butts the outside in lower bolster 13, and the lower part welding of cutting knife 1505 has the vertical guide shaft 1502 that runs through and peg graft in diaphragm 11 inside.

When the plastic film cutting machine is used, in the process that the telescopic end of the lower telescopic piece 2 extends upwards and pushes the transverse plate 11 to move upwards, the gear 1504, the sliding rack 1503 and the cutting knife 1505 move upwards synchronously, until the gear 1504 is contacted with and meshed with the fixed rack 1506, the fixed rack 1506 can drive the gear 1504 to rotate clockwise, the clockwise rotating gear 1504 drives the cutting knife 1505 to move upwards along the lower template 13, so that the sliding rack 1503 and the cutting knife 1505 move upwards synchronously along with the transverse plate 11, the sliding rack 1503 and the cutting knife 1505 slide relative to the transverse plate 11, the cutting knife 1505 moves upwards relatively and extends to the upper part of the lower template 13, so that the clamped plastic film 5 between the lower template 13 and the upper template 18 is cut, the purpose of automatically cutting the plastic film 5 after molding processing is realized, an external cutting assembly is not needed to cut, driving devices such as an electric telescopic rod or a hydraulic cylinder are not needed, and a corresponding line or a hydraulic pipeline is not needed to be installed, and the production cost and the later use cost of the cutting assembly can be reduced to a certain extent.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims (8)

1. The utility model provides a forming mechanism of plastic molding machine, includes support frame, plastic film, dust removal mechanism, location conveying mechanism and cutting mechanism, its characterized in that: the utility model discloses a plastic film cutting machine, including plastic film, location conveying mechanism, dust removal mechanism, cutting mechanism, heating mechanism, shaping mechanism, plastic film upper portion, location conveying mechanism along direction of delivery fixed mounting in the inside of support frame, dust removal mechanism install in location conveying mechanism's feed end, cutting mechanism install in location conveying mechanism's discharge end, the internally mounted of support frame has heating mechanism and pressure to hold shaping mechanism, and heating mechanism holds shaping mechanism with the pressure and sets gradually along direction of delivery, and heating mechanism is including setting up in the lower electric plate of last electric plate on plastic film upper portion and plastic film lower part, and presses and hold shaping mechanism including setting up in the cope match-plate pattern on plastic film upper portion and the lower bolster of plastic film lower part.

2. The molding mechanism of a plastic molding machine as claimed in claim 1, wherein: last actuating mechanism is installed to the interior roof of support frame, goes up actuating mechanism and includes extensible member and last guide arm, goes up the extensible member and all is symmetry form fixed mounting in the interior roof both sides of support frame with last guide arm, goes up the flexible end of extensible member down, and the lower extreme fixed mounting of flexible end has the horizontal pole that slides and set up in the outer portion of last guide arm and set up along direction of delivery, go up the electric plate and install respectively in the horizontal pole with the cope match-plate pattern.

3. The molding mechanism of a plastic molding machine as claimed in claim 1, wherein: lower actuating mechanism is installed to the inner diapire of support frame, and lower actuating mechanism includes down extensible member and lower guide arm, and lower extensible member all is symmetry form fixed mounting in the inner diapire both sides of support frame with lower guide arm, and the flexible end of lower extensible member is up, and the upper end fixed mounting of flexible end has the slide to set up in the outside diaphragm that just follows the direction of delivery setting of lower guide arm, electric plate and lower bolster are installed respectively in the diaphragm down.

4. The molding mechanism of a plastic molding machine as claimed in claim 1, wherein: the positioning conveying mechanism comprises guide cross beams with the cross section shapes of L-shaped sections and arranged along the conveying direction and servo motors arranged on the outer sides of the guide cross beams, the number of the guide cross beams is two, the two guide cross beams are symmetrically distributed in the front and back direction, a plurality of upper driving wheels and lower driving wheels which are arranged in a linear array mode are respectively rotatably arranged in the guide cross beams along the length direction, the upper driving wheels and the lower driving wheels are symmetrically arranged up and down, an upper conveying belt in butt joint with the upper surface of a plastic film is installed in the external transmission mode of the upper driving wheels, and a lower conveying belt in butt joint with the lower surface of the plastic film is installed in the external transmission mode of the lower driving wheels.

5. The molding mechanism of a plastic molding machine as claimed in claim 4, wherein: driven gears are fixedly arranged on the outer portions of the upper driving wheels, located at the two end portions of the upper conveying belt, of each guide cross beam, driving gears meshed with the driven gears are fixedly arranged on the outer portions of the lower driving wheels, located at the two end portions of the lower conveying belt, of each guide cross beam, and the output end of the servo motor is fixedly connected with one of the lower driving wheels provided with the driving gears.

6. The molding mechanism of a plastic molding machine as claimed in claim 5, wherein: the dust removal mechanism comprises two pressure rods fixedly mounted at one ends of the two guide cross beams, the two pressure rods are respectively arranged above and below the plastic film, and cleaning brushes respectively abutted against the upper surface and the lower surface of the plastic film are respectively mounted on the lower surface of the upper pressure rod and the upper surface of the lower pressure rod.

7. The molding mechanism of a plastic molding machine as claimed in claim 1, wherein: still include hold-down mechanism, the cope match-plate pattern is formed by two upper and lower rectangular plate combinations, and its cross-section is "protruding" font structure, hold-down mechanism presses frame and a plurality of along the sliding shaft of vertical slidable mounting in cope match-plate pattern upper portion rectangular plate four corners department including setting up the square frame type under the cope match-plate pattern, presses the lower surface of frame to be provided with the slipmat of square frame type, the lower extreme and the pressure frame fixed connection of sliding shaft, and the outside of sliding shaft has cup jointed buffer spring, buffer spring's upper end butt in the four corners department of the upper portion rectangular plate of cope match-plate pattern, and buffer spring's lower extreme butt in pressing the frame.

8. The molding mechanism of a plastic molding machine as claimed in claim 3, wherein: cutting mechanism installs in the inside downside of support frame, and cutting mechanism includes gear and cutting knife, the downside of support frame has the bracing piece along vertical fixed mounting, and the upper end welding of bracing piece has the fixed rack that sets up in the gear upside, cup joint in the outside logical groove of bracing piece has been seted up to inside one side of diaphragm, and gear revolve installs in the inside that leads to the groove, and one side meshing of gear is connected with along vertical slip set up in the slip rack that leads to the inslot, slip rack fixed mounting in the lower surface of cutting knife, the cutting knife butt in the outside of lower bolster, and the lower part welding of cutting knife has and is vertical guide shaft that runs through and peg graft in the diaphragm inside.

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