CN114012982A

CN114012982A - Synthetic working of plastics production stub bar excision mechanism

Info

Publication number: CN114012982A
Application number: CN202111269026.2A
Authority: CN
Inventors: 刘玉娟
Original assignee: Xuzhou Jiazibing Composite Material Co ltd
Current assignee: Xuzhou Jiazibing Composite Material Co ltd
Priority date: 2021-10-29
Filing date: 2021-10-29
Publication date: 2022-02-08

Abstract

The invention discloses a stub bar cutting mechanism for producing a synthetic plastic piece, which belongs to the technical field of stub bar cutting mechanisms and comprises a bottom frame, wherein a rectangular through groove is formed in the upper surface of the bottom frame, rectangular blocks are fixedly arranged on two sides of the bottom frame, a conveying mechanism is rotatably arranged between the rectangular blocks, a rotary groove and a mounting groove are formed in the upper surface of the bottom frame, a stub bar assembly is clamped and fixed through a clamping groove of a concave strip and is fixedly provided with a toothed belt, a guide plate is pushed by a cylinder to slide up and down along a sliding rod in a reciprocating mode, the stub bar cutting is realized through a cutter, a spring can be extruded when a fixing seat moves, the stub bar assembly is pushed by a pressing block, the cutting precision is increased, the stub bar assembly is pushed by the counter-elastic force of the spring to separate from the cutter, the toothed bar reciprocates to drive an outer toothed ring to rotate, the intermittent rotation of a first gear can be realized through the connection with a double ratchet wheel, and the toothed belt is driven, The template intermittently rotates, so that the template conveying and cutting are synchronized.

Description

Synthetic working of plastics production stub bar excision mechanism

Technical Field

The invention relates to the technical field of stub bar cutting mechanisms, in particular to a stub bar cutting mechanism for producing synthetic plastic parts.

Background

In synthetic plastics injection molding production process, when excision work is carried out to gasket stub bar semi-manufactured goods, the mode in the past is cut out the glue of connecting on the stub bar one by one through manual mode, and efficiency is slow, and is difficult to accomplish the accuracy, needs control system to carry out the subregion operation among the current automation equipment, leads to the cost of introduction price to be on the high side, and many middle-size and small-size enterprises are difficult to maintain the operation, if need realize the excision work of continuation in addition, more need improve the fortune dimension cost.

Disclosure of Invention

Aiming at the technical defects, the invention aims to provide a simple control device for cutting off the scrap head in the production of synthetic plastic parts, which can realize the intermittent rotation of a synchronizing mechanism by the up-and-down reciprocating of a cylinder and drive a template to synchronously convey and cut off by a conveying mechanism.

In order to solve the technical problems, the invention adopts the following technical scheme: the invention provides a stub bar cutting mechanism for producing a synthetic plastic part, which comprises a bottom frame, wherein a rectangular through groove is formed in the upper surface of the bottom frame, rectangular blocks are fixedly arranged on two sides of the bottom frame, a conveying mechanism is rotatably arranged between the rectangular blocks, a rotary groove and a mounting groove are formed in the upper surface of the bottom frame, a synchronizing mechanism is rotatably arranged in the mounting groove, a limiting block is fixedly arranged on the inner wall of the mounting groove, a pushing device is fixedly arranged on the upper surface of the bottom frame, the upper end of the synchronizing mechanism is fixedly connected with the pushing device, a template is fixedly arranged on the upper surface of the conveying mechanism, a stub bar assembly is clamped on the upper surface of the template, and a cutting device is fixedly connected to the bottom end of the pushing device.

Preferably, the pushing device comprises an air cylinder, a top plate is fixedly arranged at the bottom end of the air cylinder, sliding rods are symmetrically and fixedly arranged at two ends of the bottom end of the top plate, the bottom end of each sliding rod is fixedly arranged on the upper surface of the bottom frame, a guide plate is slidably arranged outside each sliding rod, a piston rod of the air cylinder penetrates through the top plate and is fixedly arranged on the upper surface of the guide plate, and the bottom surface of the guide plate is fixedly connected with the cutting device.

Preferably, resection device is including the regulating plate, convex spout has been seted up in the regulating plate, sliding mounting has two sliders in the convex spout, slider bottom fixedly connected with cutter, surface both ends fixedly connected with bottom block on the regulating plate, bottom block upper surface fixed connection baffle bottom surface, the slider internal rotation articulates there is first rocking arm, first rocking arm upper end is rotated and is connected with the second rocking arm, second rocking arm upper end is rotated and is articulated to have the fixing base, fixing base upper end fixed connection baffle bottom surface, fixing base bottom fixedly connected with spring, spring bottom fixedly connected with briquetting.

Preferably, the adjusting plate is provided with a bolt in a threaded penetrating manner on two sides, the bottom end of the bolt is in threaded connection with the side face of the sliding block, and the pressing block is arranged at the bottom end of the cutter.

Preferably, transport mechanism is including the cingulum, the cingulum is located the rectangle and is led to the inslot, fixed surface connects the template on the cingulum, the cingulum inner gearing is connected with first gear, the cingulum both ends inner gearing is connected with the gear shaft, the gear shaft both ends are rotated and are connected the inside surface of rectangle piece, first gear fixed connection lazytongs.

Preferably, the synchronizing mechanism comprises a slide rail and a fixing ring, the slide rail is fixedly arranged on the inner wall of one side of the mounting groove, a rack is slidably mounted in the slide rail, the upper end of the rack is fixedly connected with the bottom surface of the guide plate, the rack is engaged and connected with an outer toothed ring, the outer toothed ring is movably clamped between the limiting blocks, a plurality of first pawls are rotatably clamped on the outer toothed ring, a first ratchet wheel is arranged in the outer toothed ring, the first pawls are engaged and connected with the first ratchet wheel, a first rotating shaft is fixedly connected in the first ratchet wheel, one end of the first rotating shaft is rotatably connected to the inner side surface of the mounting groove, the outer surface of the fixing ring is fixedly connected with a connecting block, the other end of the connecting block is fixedly connected to the inner wall of the mounting groove, a plurality of second pawls are rotatably mounted on the surface of the fixing ring, a second pawl is engaged and connected with a second gear, and the other end of the first rotating shaft is fixedly connected in the second gear, the second gear is connected with a third gear in a meshing manner, a second rotating shaft is fixedly connected in the third gear, and the second rotating shaft movably penetrates through the rotating groove and is fixedly connected to the outer side of the first gear.

Preferably, the template is including the bottom plate, bottom plate bottom surface both ends fixedly connected with L shape fixed block, L shape fixed block bottom fixed connection tooth belt upper surface, the fixed spill strip that is equipped with of bottom plate upper surface symmetry, a plurality of draw-in grooves have been seted up to spill strip side, activity joint material subassembly in the spill strip.

Preferably, the stub bar assembly comprises a plurality of injection molding gaskets, the exterior of each injection molding gasket is fixedly connected with a connector, the other end of each connector is fixedly connected with a connecting cylinder, and the connectors are clamped in the clamping grooves.

The invention has the beneficial effects that: according to the invention, the stub bar component is clamped and fixed through the clamping groove of the concave strip and the toothed belt is fixedly arranged, the air cylinder pushes the guide plate to slide up and down along the sliding rod in a reciprocating manner, the stub bar is cut off through the cutter, the spring can be extruded when the fixing seat moves, the stub bar component is pressed through the pressing block, the cutting precision is increased, the stub bar component is separated from the cutter through pushing the pressing block through the rebound force of the spring, the rack reciprocates and drives the outer toothed ring to rotate, the intermittent rotation of the first gear can be realized through the connection with the double ratchet wheels, the toothed belt and the template are driven to rotate intermittently, and therefore the synchronization of template conveying and cutting is realized.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a scrap cutting mechanism for manufacturing a synthetic plastic part according to an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of the pushing device.

Fig. 3 is a schematic view of the cutting device.

Fig. 4 is a schematic structural view of the installation of the transfer mechanism.

Fig. 5 is a schematic structural diagram of the transfer mechanism.

Fig. 6 is a schematic structural view of the die plate and the stub bar assembly.

Fig. 7 is a schematic structural view of the synchronization mechanism.

Description of reference numerals: 1. a bottom frame; 11. a rectangular through groove; 12. a rectangular block; 13. rotating the groove; 14. mounting grooves; 15. a limiting block; 3. a pushing device; 31. a cylinder; 32. a top plate; 33. a slide bar; 34. a guide plate; 4. a cutting device; 41. an adjusting plate; 411. a convex chute; 412. a bolt; 42. a bottom block; 43. a slider; 44. a cutter; 45. a first rocker arm; 46. a second rocker arm; 47. a fixed seat; 48. a spring; 49. briquetting; 5. a transport mechanism; 51. a toothed belt; 52. a first gear; 53. a gear shaft; 6. a template; 61. a base plate; 62. an L-shaped fixed block; 63. a concave strip; 631. a card slot; 7. a synchronization mechanism; 71. a slide rail; 72. a rack; 73. an outer ring gear; 731. a first ratchet wheel; 732. a first pawl; 74. a first rotating shaft; 75. a second gear; 76. a third gear; 77. a second rotating shaft; 78. a fixing ring; 781. a second pawl; 782. connecting blocks; 8. a stub bar assembly; 81. injection molding a gasket; 82. a connecting cylinder; 83. a connecting head.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example (b): as shown in fig. 1 to 7, the invention provides a scrap cutting mechanism for producing synthetic plastic parts, which comprises a bottom frame 1, wherein a rectangular through groove 11 is formed on the upper surface of the bottom frame 1, rectangular blocks 12 are fixedly arranged on two sides of the bottom frame 1, a conveying mechanism 5 is rotatably arranged between the rectangular blocks 12, the conveying mechanism 5 can be fixedly arranged on the bottom frame 1 and can stably convey, a rotary groove 13 and a mounting groove 14 are formed on the upper surface of the bottom frame 1, a synchronizing mechanism 7 is rotatably arranged in the mounting groove 14, the synchronizing mechanism 7 is fixedly arranged, a limiting block 15 is fixedly arranged on the inner wall of the mounting groove 14, a pushing device 3 is fixedly arranged on the upper surface of the bottom frame 1, the upper end of the synchronizing mechanism 7 is fixedly connected with the pushing device 3, the synchronizing mechanism 7 is driven by the pushing device 3 to intermittently rotate, a template 6 is fixedly arranged on the upper surface of the conveying mechanism 5, conveying mechanism 5 can realize intermittent type nature conveying to drive 6 intermittent type nature displacements of template, 6 upper surface joint of template have stub bar subassembly 8, 3 bottom fixedly connected with resection device 4 of thrust unit to drive 4 reciprocating displacement of resection device through thrust unit 3, and carry out the excision work of continuation to the stub bar subassembly 8 of intermittent type conveying.

Further, thrust unit 3 is including cylinder 31, the fixed roof 32 that is equipped with in cylinder 31 bottom, cylinder 31 by fixed mounting, roof 32 bottom both ends symmetry is fixed and is equipped with slide bar 33, slide bar 33 bottom is fixed and is located the upper surface of underframe 1 to roof 32 and underframe 1 fixed connection, slide bar 33 outer slidable mounting has guide plate 34, and guide plate 34 slides along slide bar 33, cylinder 31 piston rod runs through roof 32 to fixed the locating guide plate 34 upper surface, guide plate 34 bottom surface fixed connection resection device 4, thus cylinder 31 promotes guide plate 34 and reciprocates the slip from top to bottom along slide bar 33, can realize resection device 4 and reciprocate from top to bottom.

Further, resection device 4 is including regulating plate 41, convex spout 411 has been seted up in regulating plate 41, sliding installation has two sliders 43 in convex spout 411, thereby slider 43 can carry out sliding installation along regulating plate 41, slider 43 bottom fixedly connected with cutter 44 can realize cutting two rows simultaneously through two cutters 44, regulating plate 41 upper surface both ends fixedly connected with end block 42, end block 42 upper surface fixed connection baffle 34 bottom surface, thereby regulating plate 41 passes through end block 42 fixed connection baffle 34, the slider 43 internal rotation articulates there is first rocking arm 45, first rocking arm 45 upper end rotation is connected with second rocking arm 46, second rocking arm 46 upper end rotation articulates there is fixing base 47, fixing base 47 upper end fixed connection baffle 34 bottom surface, thereby when baffle 34 reciprocates and slides, can promote fixing base 47 to make second rocking arm 46 and first rocking arm 45 rotate each other, the bottom end of the fixed seat 47 is fixedly connected with a spring 48, and the bottom end of the spring 48 is fixedly connected with a pressing block 49, so that when the fixed seat 47 moves up and down, the spring 48 can be extruded, and the pressing block 49 can move up and down.

Further, the adjusting plate 41 has two side threads through which a bolt 412 passes, the bottom end of the bolt 412 is in threaded connection with the side surface of the slider 43, and the pressing block 49 is arranged at the bottom end of the cutter 44, so that the adjusting bolt 412 can change the distance between the two cutters 44 to adapt to different cutting operations, and the bottom end of the cutter 44 is arranged through the pressing block 49, when cutting, the pressing block 49 presses the stub bar assembly 8 to fix the stub bar assembly 8, the cutting accuracy is high, and when the cutter 44 is lifted, the pressing block 49 is pushed by the spring 48 to separate the stub bar assembly 8 from the cutter 44 in order to prevent the stub bar assembly 8 from being bonded with the cutter 44.

Further, transport mechanism 5 is including toothed belt 51, toothed belt 51 is located the rectangle and is led to the inslot 11, and toothed belt 51 installation rectangle leads to the inslot 11 internal energy and realizes stable rotation, fixed surface connects template 6 on toothed belt 51, and toothed belt 51 drives template 6 and rotates, toothed belt 51 internal gearing has first gear 52, toothed belt 51 both ends internal gearing has gear shaft 53, gear shaft 53 both ends are rotated and are connected the 12 internal side surfaces of rectangle piece to gear shaft 53 can stably rotate, and first gear 52 drives toothed belt 51 and rotates, first gear 52 fixed connection lazytongs 7 drives first gear 52 intermittent type through lazytongs 7 and rotates.

Further, the synchronizing mechanism 7 includes a slide rail 71 and a fixing ring 78, the slide rail 71 is fixedly disposed on an inner wall of one side of the mounting groove 14, the slide rail 71 is fixedly mounted, a rack 72 is slidably mounted in the slide rail 71, an upper end of the rack 72 is fixedly connected to a bottom surface of the guide plate 34, the guide plate 34 drives the rack 72 to move up and down, the rack 72 is engaged and connected with an outer toothed ring 73, so that the rack 72 drives the outer toothed ring 73 to rotate, the outer toothed ring 73 is movably engaged and connected between the limiting blocks 15, so that the outer toothed ring 73 can stably rotate between the limiting blocks 15, a plurality of first pawls 732 are rotatably engaged and connected to the outer toothed ring 73, a first ratchet 731 is disposed in the outer toothed ring 73, the first ratchet 732 is engaged and connected with a first ratchet 731, a first rotating shaft 74 is fixedly connected in the first ratchet 731, one end of the first rotating shaft 74 is rotatably connected to the inner side surface of the mounting groove 14, so that the first ratchet wheel 731 can stably rotate through the first rotating shaft 74, the outer surface of the fixing ring 78 is fixedly connected with a connecting block 782, the other end of the connecting block 782 is fixedly connected to the inner wall of the mounting groove 14, so that the fixing ring 78 is fixedly mounted, the surface of the fixing ring 78 is rotatably mounted with a plurality of second pawls 781, the second pawls 781 are in meshing connection with a second gear 75, so that when the first rotating shaft 74 rotates counterclockwise, the second pawls 781 are used for limiting the rotation of the second gear 75, the second gear 75 is internally and fixedly connected with the other end of the first rotating shaft 74, the first rotating shaft 74 drives the second gear 75 to rotate clockwise, the second gear 75 is in meshing connection with a third gear 76, so that the second gear 75 drives the third gear 76 to rotate clockwise, and the third gear 76 is internally and fixedly connected with a second rotating shaft 77, the second shaft 77 movably penetrates through the rotary slot 13 and is fixedly connected to the outer side of the first gear 52, so that the second shaft 77 drives the first gear 52 to rotate clockwise in a clearance manner.

Further, template 6 is including bottom plate 61, bottom plate 61 bottom surface both ends fixedly connected with L shape fixed block 62, L shape fixed block 62 bottom fixed connection cingulum 51 upper surface to bottom plate 61 passes through L shape fixed block 62 and cingulum 51 upper surface fixed connection, bottom plate 61 upper surface symmetry is fixed and is equipped with spill strip 63, a plurality of draw-in grooves 631 have been seted up to spill strip 63 side, activity joint material head subassembly 8 in the spill strip 63 to can joint fixed joint material head subassembly 8 through spill strip 63.

Further, stub bar subassembly 8 is including a plurality of gaskets 81 of moulding plastics, and the gasket 81 of moulding plastics is used for acting as waterproof gasket and uses, the outer fixedly connected with connector 83 of gasket 81 of moulding plastics, connector 83 other end fixedly connected with connecting cylinder 82, connector 83 joint is in draw-in groove 631 to cutter 44 along concave strip 63 side excision connector 83, makes gasket 81 and the connecting cylinder 82 separation of moulding plastics, accomplishes the excision work.

When the cutting device is used, the connecting head 83 in the stub bar component 8 is clamped in the clamping groove 631 through the concave strip 63, the connecting head is fixedly arranged on the upper surface of the toothed belt 51 through the bottom plate 61 and the L-shaped fixing block 62, the template 6 can rotate together with the toothed belt 51, the air cylinder 31 pushes the guide plate 34 to slide up and down along the sliding rod 33 in a reciprocating manner, two rows of connecting heads 83 can be simultaneously cut along the side wall of the concave strip 63 through the two cutters 44, the injection molding gasket 81 is separated from the connecting cylinder 82, the cutting work is completed, when the guide plate 34 slides up and down in a reciprocating manner, the fixing seat 47 can be pushed to enable the second rocker arm 46 and the first rocker arm 45 to rotate mutually, so that the fixing seat 47 moves up and down, the spring 48 can be extruded, because the pressing block 49 is arranged at the bottom end of the cutter 44, when the cutting is performed, the pressing block 49 presses the stub bar component 8 to fix the stub bar component 8, the cutting accuracy is increased, and when the cutter 44 is lifted, in order to prevent the stub bar component 8 from being bonded with the cutter 44, the press block 49 is pushed by the spring 48 to separate the stub bar assembly 8 from the cutter 44, in addition, the guide plate 34 can link the rack 72 to move up and down and move back and forth, and drive the outer toothed ring 73 to rotate back and forth, when the cutter 44 moves downwards to cut off, the outer toothed ring 73 is rotated clockwise, and the first pawl 732 drives the first ratchet 731 to rotate clockwise, so as to drive the first rotating shaft 74 to rotate clockwise, and at the same time, the second pawl 781 inclined surface of the fixing ring 78 is clamped and fixed with the second gear 75, so that the first rotating shaft 74 can not drive the second gear 75 to rotate clockwise, so that the template 6 is fixed, thereby facilitating the cutting of the stub bar, then when the cutter 44 ascends, the outer toothed ring 73 is rotated counterclockwise, the first pawl 732 drives the first ratchet 731 to rotate counterclockwise, so as to drive the first rotating shaft 74 to rotate counterclockwise, and at the same time, the second pawl 781 inclined surface of the fixing ring 78 can not be clamped and fixed with the second gear 75, therefore, the first gear 52, the toothed belt 51 and the template 6 can be driven to rotate anticlockwise, so that the template 6 is conveyed to the lower end of the cutter 44 at equal intervals to wait for cutting, and intermittent synchronous conveying and cutting work is realized.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. The utility model provides a synthetic working of plastics production stub bar excision mechanism, includes underframe frame (1), its characterized in that: underframe (1) upper surface has been seted up the rectangle and has been led to groove (11), underframe (1) both sides are fixed and are equipped with rectangular block (12), transport mechanism (5) are installed to the internal rotation between rectangular block (12), underframe (1) upper surface has been seted up turn trough (13), mounting groove (14), lazytongs (7) are installed to mounting groove (14) internal rotation, mounting groove (14) inner wall fixed mounting has stopper (15), underframe (1) upper surface fixed mounting has thrust unit (3), lazytongs (7) upper end fixed connection thrust unit (3), fixed surface installs template (6) on transport mechanism (5), template (6) upper surface joint has stub bar subassembly (8), thrust unit (3) bottom fixedly connected with resection device (4).

2. The mechanism for cutting off the scrap in the production of synthetic plastic parts according to claim 1, wherein the pushing device (3) comprises a cylinder (31), a top plate (32) is fixed to the bottom end of the cylinder (31), slide rods (33) are symmetrically fixed to both ends of the bottom end of the top plate (32), the bottom end of each slide rod (33) is fixed to the upper surface of the bottom frame (1), a guide plate (34) is slidably mounted outside each slide rod (33), a piston rod of the cylinder (31) penetrates through the top plate (32) and is fixedly arranged on the upper surface of the guide plate (34), and the bottom surface of the guide plate (34) is fixedly connected with the cutting device (4).

3. The cutting mechanism for the scrap produced by the synthetic plastic parts according to claim 2, wherein the cutting device (4) comprises an adjusting plate (41), a convex chute (411) is formed in the adjusting plate (41), two sliding blocks (43) are slidably mounted in the convex chute (411), a cutter (44) is fixedly connected to the bottom ends of the sliding blocks (43), a bottom block (42) is fixedly connected to both ends of the upper surface of the adjusting plate (41), the upper surface of the bottom block (42) is fixedly connected to the bottom surface of the guide plate (34), a first rocker arm (45) is rotatably hinged in the sliding blocks (43), a second rocker arm (46) is rotatably connected to the upper end of the first rocker arm (45), a fixed seat (47) is rotatably hinged to the upper end of the second rocker arm (46), the upper end of the fixed seat (47) is fixedly connected to the bottom surface of the guide plate (34), and a spring (48) is fixedly connected to the bottom end of the fixed seat (47), the bottom end of the spring (48) is fixedly connected with a pressing block (49).

4. A synthetic plastics part production stub bar cutting mechanism as claimed in claim 3 wherein said adjustment plate (41) is threaded on both sides with a bolt (412), the bottom end of said bolt (412) is threaded to the side of the slider (43), and said press block (49) is located at the bottom end of the cutter (44).

5. A synthetic plastics piece production stub cutting mechanism as claimed in claim 1 wherein said transfer mechanism (5) includes a toothed belt (51), said toothed belt (51) is disposed in said rectangular through slot (11), said toothed belt (51) is fixedly connected to said form (6) at its upper surface, said toothed belt (51) is internally engaged with a first gear (52), said toothed belt (51) is internally engaged with a gear shaft (53) at its two ends, said gear shaft (53) is rotatably connected to the inner side surface of said rectangular block (12) at its two ends, and said first gear (52) is fixedly connected to said synchronizing mechanism (7).

6. The scrap cutting mechanism for the production of synthetic plastic parts according to claim 5, wherein the synchronizing mechanism (7) comprises a slide rail (71) and a fixing ring (78), the slide rail (71) is fixedly arranged on the inner wall of one side of the mounting groove (14), a rack (72) is slidably mounted in the slide rail (71), the upper end of the rack (72) is fixedly connected with the bottom surface of the guide plate (34), the rack (72) is engaged and connected with an outer toothed ring (73), the outer toothed ring (73) is movably clamped between the limiting blocks (15), a plurality of first pawls (732) are rotatably clamped on the outer toothed ring (73), a first ratchet wheel (731) is arranged in the outer toothed ring (73), the first pawl (732) is engaged and connected with the first ratchet wheel (731), a first rotating shaft (74) is fixedly connected in the first ratchet wheel (731), one end of the first rotating shaft (74) is rotatably connected to the inner side surface of the mounting groove (14), the outer surface of the fixing ring (78) is fixedly connected with a connecting block (782), the other end of the connecting block (782) is fixedly connected to the inner wall of the mounting groove (14), the surface of the fixing ring (78) is rotatably provided with a plurality of second pawls (781), the second pawls (781) are connected with second gears (75) in a meshed mode, the second gears (75) are fixedly connected with the other end of the first rotating shaft (74), the second gears (75) are connected with third gears (76) in a meshed mode, the third gears (76) are fixedly connected with second rotating shafts (77), and the second rotating shafts (77) movably penetrate through the rotating groove (13) and are fixedly connected with the outer side of the first gears (52).

7. The scrap cutting mechanism for plastic part production according to claim 5, wherein the mold plate (6) comprises a bottom plate (61), L-shaped fixing blocks (62) are fixedly connected to two ends of the bottom surface of the bottom plate (61), the bottom ends of the L-shaped fixing blocks (62) are fixedly connected to the upper surface of the toothed belt (51), concave strips (63) are symmetrically and fixedly arranged on the upper surface of the bottom plate (61), a plurality of clamping grooves (631) are formed in the side surfaces of the concave strips (63), and the clamping head assemblies (8) are movably arranged in the concave strips (63).

8. The cutting mechanism for the scrap head in the production of synthetic plastic parts according to claim 7, wherein the scrap head assembly (8) comprises a plurality of injection molding gaskets (81), a connector (83) is fixedly connected to the outside of each injection molding gasket (81), the other end of each connector (83) is fixedly connected with a connecting cylinder (82), and each connector (83) is clamped in the clamping groove (631).