Feeding structure for injection molding and injection molding machine thereof

Abstract

The feeding structure for injection molding comprises a base, symmetrical supports are fixedly connected to the middle of the upper end of the base, a plurality of symmetrical fixing plates are fixedly connected to the sides, close to the base, of the symmetrical supports, and the ends, away from the supports, of the symmetrical fixing plates are jointly and fixedly connected with a feeding cylinder; a shell is fixedly connected to the middle of the lower end of the feeding cylinder, a mixing bin is arranged below the shell, the mixing bin and the shell are connected with the support through symmetrical fixed plates, symmetrical movable plates are slidably connected to the lower end of the shell, and an adjusting mechanism used for driving the movable plates to move horizontally is arranged at the lower end of the shell. The rotary knob is rotated to drive the transmission rod to rotate so as to drive the moving plates on the two sides to move, so that the discharging speed of different types of injection molding raw materials is controlled, and the opening mechanism is arranged to be matched with the adjusting mechanism for use, so that the different types of injection molding raw materials fall into the mixing bin at a certain speed to be fully mixed.

Description

Technical Field

[0001] The invention relates to the technical field of injection molding auxiliary equipment, in particular to a feeding structure for injection molding and an injection molding machine thereof. Background Art

[0002] Injection molding machine, also known as injection molding machine or injection machine, is the main molding equipment that uses plastic molding molds to make plastic products of various shapes from thermoplastics or thermosetting plastics. The injection molding machine can heat the plastic and apply high pressure to the molten plastic to make it ejected and fill the mold cavity.

[0003] For example, Chinese patent publication No. CN210634008U discloses a feeding device for an injection molding machine, including an injection molding box, a hydraulic cylinder, a connecting plate, an extension rod and a connecting pipe. A working chamber is arranged inside the injection molding box, a discharge port is arranged at the left end of the injection molding box, and the discharge port is communicated with the working chamber, a first discharge hopper is connected to the left end of the discharge port, a discharge pipe is connected to the left output end of the first discharge hopper, a first valve is arranged on the discharge pipe, a left movable end of the hydraulic cylinder is connected to the right end of the connecting plate, a left end of the connecting plate is connected to the right end of the extension rod, a piston is arranged at the left end of the extension rod, and the piston is located inside the working chamber of the injection molding box.

[0004] In this solution, the spiral blade is driven by a motor to rotate so as to transport the injection molding materials in the material box. However, for different injection molding products, some products require two different injection molding materials to be mixed before injection molding. Materials of different sizes and weights are likely to be mixed unevenly during the descent process. Moreover, after replacing the injection molds of different products, the mixed materials in the material box are difficult to separate. Summary of the invention

[0005] The object of the present invention is to provide a feeding structure for injection molding to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A feeding structure for injection molding, including a base, a symmetrical bracket is fixedly connected to the middle part of the upper end of the base, a plurality of symmetrical fixed plates are symmetrically fixedly connected to the side of the bracket close to the base, a feeding barrel is fixedly connected to the end of the fixed plate away from the bracket, a shell is fixedly connected to the middle part of the lower end of the feeding barrel, a mixing bin is arranged below the shell, the mixing bin and the shell are connected to the bracket through symmetrical fixed plates, a symmetrical movable plate is slidably connected to the lower end of the shell, and an adjusting mechanism for driving the movable plate to move horizontally is arranged at the lower end of the shell, the adjusting mechanism includes a knob, when the knob is rotated, the movable plate close to the knob side is driven to reciprocate horizontally, when the knob is rotated after moving horizontally toward the shell, the movable plate away from the knob side is driven to reciprocate horizontally.

[0008] As a further solution of the present invention: a partition plate is fixedly connected to the middle part of the inner cavity of the shell, the movable plate is slidably connected to the inner cavity of the shell, a transmission rod is fixedly connected to the middle part of the side of the knob close to the shell, the outer wall of the transmission rod is rotatably connected to the shell, a side wall of the movable plate is provided with a notch used to cooperate with the transmission rod, symmetrical mounting plates are fixedly connected to the positions of the shell and the partition plate close to the notch, a symmetrical balance rod is fixedly connected to the side of the symmetrical mounting plate close to the transmission rod, and a positioning block is slidably connected to the end of the balance rod away from the mounting plate.

[0009] As a further solution of the present invention: a symmetrical extension rod is fixedly connected to the middle part of the outer wall of the mounting plate, the end of the extension rod away from the mounting plate is fixedly connected to a support rod, the outer wall of the transmission rod near the positioning block is provided with an inner gear ring, the outer wall of the inner gear ring is fixedly connected to an outer gear ring, the outer wall of the inner gear ring is provided with an annular groove, the end of the support rod away from the extension rod is fixedly connected to an arc block, the size of the arc block is adapted to the annular groove, and the arc block is slidably connected in the annular groove.

[0010] As a further solution of the present invention: a fixed block is fixedly connected to the outer wall of the transmission rod near the inner gear ring, a symmetrical mounting block is fixedly connected to the side of the fixed block away from the partition plate, a movable block is vertically slidably connected to the side close to the fixed block, the movable block and the mounting block are elastically connected by a spring, symmetrical racks are fixedly connected to the upper and lower sides of the inner cavity of the movable plate, the symmetrical racks are symmetrical about the center of the circle of the transmission rod, the symmetrical rack located at the top is fixedly connected to the movable plate on one side, and the symmetrical rack located at the bottom is fixedly connected to the movable plate on the other side, the outer gear ring is meshed with the rack, and the inner gear ring is meshed with both ends of the fixed block.

[0011] As a further solution of the present invention: symmetrical opening and closing mechanisms are arranged at both ends of the mixing bin, and the opening and closing mechanisms include a fixed ring, a rotating ring is arranged above the fixed ring, the lower end of the rotating ring is rotatably connected to the fixed ring, the upper end of the rotating ring located above is rotatably connected to the shell, and discharge holes are provided at the upper ends of the rotating ring and the fixed ring, and the positions of the discharge holes correspond to the positions of the movable plate, the rotating ring located below is rotatably connected to the lower end of the mixing bin, and the end of the rotating ring located below which is away from the fixed ring is fixedly connected to a connecting cylinder, and a driven rod is fixedly connected to one side of the outer wall of the fixed ring, and the driven rod is located on the side of the outer wall of the rotating ring close to the knob.

[0012] As a further solution of the present invention: a closing plate is symmetrically arranged between the fixed ring and the rotating ring, the end of the closing plate away from the center position of the rotating ring is rotatably connected to a rotating rod, the lower end of the rotating rod is fixedly connected to the rotating ring, the outer wall of the closing plate is fixedly connected to a connecting block on the side away from the rotating rod, the upper end of the connecting block is fixedly connected to a guide rod, the lower end of the fixed ring is provided with a guide groove used to cooperate with the guide rod, and the upper end outer wall of the guide rod is slidably matched with the guide groove.

[0013] As a further solution of the present invention: a horizontal plate is fixedly connected to the side of the outer wall of the connecting cylinder close to the knob, a vertical plate is fixedly connected to the side of the upper end of the horizontal plate away from the connecting cylinder, a driving motor is transmission-connected to the side of the upper end of the vertical plate close to the mixing bin, an incomplete gear is transmission-connected to the end of the driving motor away from the vertical plate, a driven gear is rotatably connected to the outer wall of the vertical plate, and the driven gear and the incomplete gear are meshed with each other.

[0014] As a further solution of the present invention: a reset groove symmetrically located about the center position of the rotating ring is provided at the upper end of the rotating ring, a reset rod is slidably connected in the reset groove, the side wall of the reset rod is elastically connected to the inner cavity side wall of the reset groove by an arc spring, and the upper end of the reset rod is fixedly connected to the fixing ring.

[0015] As a further solution of the present invention: a connecting plate is fixedly connected to the bottom of the inner cavity of the mixing bin, a motor is transmission-connected to the middle of the upper end of the connecting plate, a stirring rod is transmission-connected to the output end of the motor, the vertical height of the stirring rod is the same as the vertical height of the mixing bin, and the horizontal length of the stirring rod is reduced by the inner cavity diameter of the mixing bin.

[0016] An injection molding machine comprises a base, wherein the upper end of the base is fixedly connected to an extruder, the middle part of the upper end of the base is fixedly connected to the extruder, one end of the extruder is provided with a servo motor, the lower end of the servo motor is fixedly connected to the base, the servo motor is close to a vertical plate, the feeding barrel is located between the extruder and the injection mold, the side of the base away from the servo motor is provided with an injection mold for injection molding, the lower end of the connecting barrel is fixedly connected to the upper end of the extruder close to the servo motor, and the interval between the symmetrical brackets is greater than the width of the base.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The injection molding raw materials are heated and melted by the extruder, and then the molten injection molding raw materials are squeezed into the injection mold. Different types of injection molding raw materials are added to the inner cavity of the shell, and the transmission rod is driven to rotate by turning the knob to drive the movable plate to move. The transmission rod can be driven to move on the other side by pressing the knob, thereby controlling the feeding speed of different types of injection molding raw materials. By setting an opening mechanism and cooperating with the adjustment mechanism, different types of injection molding raw materials can fall into the mixing bin at a certain rate, so that the two different injection molding raw materials are fully mixed in the mixing bin and then enter the extruder, thereby avoiding uneven mixing of the two different types of injection molding raw materials during the melting process, resulting in unqualified quality of the injection molded product. The process of mixing the raw materials in steps also avoids the problem of waste of raw materials due to excess mixed raw materials when changing injection molding products. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 It is a schematic diagram of the structure of the shell in the present invention.

[0021] Figure 3 It is a schematic diagram of the structure of the mixing bin in the present invention.

[0022] Figure 4 It is a structural schematic diagram of the adjustment mechanism in the present invention.

[0023] Figure 5 It is a schematic diagram of the structure of the movable plate in the present invention.

[0024] Figure 6 It is a schematic diagram of the structure of the inner gear ring in the present invention.

[0025] Figure 7 It is a structural schematic diagram of the movable block in the present invention.

[0026] Figure 8 It is a structural schematic diagram of the opening and closing mechanism in the present invention.

[0027] Fig. 9 It is a schematic structural diagram of the closing plate in the present invention.

[0028] Fig.10 For the present invention Fig. 9 Schematic diagram of the structure of area A.

[0029] Fig.11 It is a schematic diagram of the structure of the vertical plate in the present invention.

[0030] In the figure: 1, base; 2, injection mold; 3, extruder; 4, servo motor; 5, bracket; 6, fixed plate; 7, feeding cylinder; 8, shell; 9, connecting cylinder; 10, partition plate; 11, moving plate; 12, knob; 13, transmission rod; 14, fixed block; 15, movable block; 16, inner gear ring; 17, outer gear ring; 18, mounting block; 19, mounting plate; 20, positioning block; 21, rack; 22, mixing chamber; 23 , stirring rod; 24, connecting plate; 25, rotating ring; 26, driven rod; 27, fixed ring; 28, closing plate; 29, guide groove; 30, connecting block; 31, guide rod; 32, rotating rod; 33, vertical plate; 34, horizontal plate; 35, driving motor; 36, incomplete gear; 37, driven gear; 38, pushing rod; 39, extension rod; 40, supporting rod; 41, annular groove; 42, reset groove; 43, reset rod. DETAILED DESCRIPTION

[0031] See also Figure 1-Figure 3 In an embodiment of the present invention, a feeding structure for injection molding includes a base 1, a symmetrical bracket 5 is fixedly connected to the middle part of the upper end of the base 1, a plurality of symmetrical fixed plates 6 are fixedly connected to the side of the symmetrical bracket 5 close to the base 1, a feeding barrel 7 is fixedly connected to the end of the symmetrical fixed plate 6 away from the bracket 5, a shell 8 is fixedly connected to the middle part of the lower end of the feeding barrel 7, a mixing bin 22 is arranged below the shell 8, the mixing bin 22 and the shell 8 are connected to the bracket 5 through the symmetrical fixed plates 6, a symmetrical moving plate 11 is slidably connected to the lower end of the shell 8, and an adjusting mechanism for driving the moving plate 11 to move horizontally is arranged at the lower end of the shell 8, the adjusting mechanism includes a knob 12, when the knob 12 is rotated, the moving plate 11 close to the knob 12 is driven to reciprocate horizontally, when the knob 12 moves toward the shell 8 and is rotated again, the moving plate 11 away from the knob 12 is driven to reciprocate horizontally.

[0032] See also Figure 2 , Figure 3-Figure 7A partition plate 10 is fixedly connected to the middle of the inner cavity of the shell 8, and the partition plate 10 separates the inner cavity of the shell 8 and the feeding cylinder 7. The movable plate 11 is slidably connected to the inner cavity of the shell 8, and the side wall of the movable plate 11 fits with the partition plate 10. A transmission rod 13 is fixedly connected to the middle of the side of the knob 12 close to the shell 8. The outer wall of the transmission rod 13 is rotatably connected to the shell 8. A notch is provided on the side wall of the movable plate 11 for matching with the transmission rod 13. A symmetrical mounting plate 19 is fixedly connected to one side of the inside of the shell 8 close to the notch, as well as to both sides of the partition plate 10. A symmetrical balancing rod is fixedly connected to the side of the symmetrical mounting plate 19 close to the transmission rod 13. A positioning block 20 is slidably connected to the end of the balancing rod away from the mounting plate 19. The positioning block 20 is connected to the mounting plate 1 9 is elastically connected by a spring, a symmetrical extension rod 39 is fixedly connected to the middle part of the outer wall of the mounting plate 19, and a support rod 40 is fixedly connected to the end of the extension rod 39 away from the mounting plate 19, and an inner gear ring 16 is arranged on the outer wall of the transmission rod 13 near the positioning block 20, and an outer gear ring 17 is fixedly connected to the outer wall of the inner gear ring 16, and an annular groove 41 is provided on the outer wall of the inner gear ring 16, and an arc block is fixedly connected to the end of the support rod 40 away from the extension rod 39, and the size of the arc block is adapted to the annular groove 41, and the arc block is slidably connected in the annular groove 41, and the inner gear ring 16 is supported by the symmetrical extension rod 39, the support rod 40 and the cooperation of the arc block and the annular groove 41, so that the inner gear ring 16 can rotate with the support rod 40, and the transmission rod 1 The outer wall of the movable plate 11 is fixedly connected with a fixed block 14 at a position close to the inner gear ring 16, and a symmetrical mounting block 18 is fixedly connected to the side of the fixed block 14 away from the partition plate 10. A symmetrical balance bar is fixedly connected to the end of the mounting block 18 away from the transmission rod 13, and a movable block 15 is slidably connected to the end of the balance bar away from the mounting block 18. The movable block 15 and the mounting block 18 are elastically connected by a spring. The upper and lower sides of the inner cavity of the movable plate 11 are fixedly connected with symmetrical racks 21. The symmetrical racks 21 are symmetrical about the center of the center of the transmission rod 13. The symmetrical racks 21 located at the top are fixedly connected to the movable plate 11 on one side, and the symmetrical racks 21 located at the bottom are fixedly connected to the movable plate 11 on the other side. The outer gear ring 17 is meshed with the racks 21, and the inner gear ring 17 is meshed with the racks 21. The ring 16 is meshed with both ends of the fixed block 14. When the knob 12 is turned to drive the transmission rod 13 to rotate, the inner toothed ring 16 is driven to rotate through the fixed block 14, thereby driving the outer toothed ring 17 to rotate, and then the symmetrical movable plates 11 are driven to move through the cooperation of the outer toothed ring 17 and the rack 21. The interval between the symmetrical movable plates 11 can be adjusted by turning the knob 12. When the inner toothed ring 16 close to the knob 12 rotates to drive the movable plate 11 to move, the inner toothed ring 16 away from the knob 12 remains stationary, that is, when the fixed block 14 close to the knob 12 is meshed with the inner toothed ring 16, the fixed block 14 away from the knob 12 is separated from the inner toothed ring 16 away from the knob 12, that is, the inner toothed ring 16 away from the knob 12 is in contact with the movable block 15.As the movable block 15 rotates with the fixed block 14, the movable block 15 will shrink and will not drive the inner gear ring 16 to rotate. When the knob 12 moves toward the outer wall of the housing 8, the fixed block 14 away from the knob 12 contacts the inner gear ring 16, while the fixed block 14 close to the knob 12 is separated from the inner gear ring 16, so that when the knob 12 rotates, only one side of the movable plate 11 moves, so that the horizontal movement of the symmetrical movable plate 11 on one side can be adjusted separately, so that the interval between the symmetrical movable plates 11 can be adjusted separately, so as to control the falling rate of the injection molding raw materials in the feeding barrel 7, so as to facilitate the control of the mixing of multiple injection molding raw materials in a certain proportion in the mixing chamber 22, and the two ends of the mixing chamber 22 are provided with symmetrical opening and closing mechanisms.

[0033] See also Figure 8-Figure 10The opening and closing mechanism includes a fixed ring 27, a rotating ring 25 is arranged above the fixed ring 27, the lower end of the rotating ring 25 is rotatably connected to the fixed ring 27, the upper end of the rotating ring 25 located above is rotatably connected to the shell 8, and the upper ends of the rotating ring 25 and the fixed ring 27 are provided with feeding holes, and the positions of the feeding holes correspond to the positions of the movable plate 11. The rotating ring 25 located below is rotatably connected to the lower end of the mixing bin 22, and the end of the rotating ring 25 located below away from the fixed ring 27 is fixedly connected to the connecting tube 9, and a driven rod 26 is fixedly connected to one side of the outer wall of the fixed ring 27, and the driven rod 26 is located on the side of the outer wall of the rotating ring 25 close to the knob 12, and a closing plate 28 is centrally symmetrically arranged between the fixed ring 27 and the rotating ring 25, and the closing plate 28 is away from the rotating ring 25. The end at the center position is rotatably connected with a rotating rod 32, and the lower end of the rotating rod 32 is fixedly connected to the rotating ring 25. The outer wall of the closing plate 28 is fixedly connected to a connecting block 30 on the side away from the rotating rod 32. The upper end of the connecting block 30 is fixedly connected to the guide rod 31. The lower end of the fixed ring 27 is provided with a guide groove 29 used to cooperate with the guide rod 31. The upper end outer wall of the guide rod 31 is slidably matched with the guide groove 29. Therefore, during the rotation of the fixed ring 27, the closing plate 28 is driven to rotate around the rotating rod 32 through the cooperation of the guide groove 29 and the guide rod 31, so that the centrally symmetrical closing plate 28 is away from the center position of the feeding hole, so that the injection molding material in the shell 8 can enter the mixing bin 22 through the feeding hole after passing through the interval between the symmetrical moving plates 11. A horizontal plate 34 is fixedly connected to the side of the outer wall of the connecting cylinder 9 close to the knob 12, and a vertical plate 33 is fixedly connected to the side of the upper end of the horizontal plate 34 away from the connecting cylinder 9. A driving motor 35 is transmission-connected to the side of the upper end of the vertical plate 33 close to the mixing bin 22, and an incomplete gear 36 is transmission-connected to the end of the driving motor 35 away from the vertical plate 33. A driven gear 37 is rotationally connected to the outer wall of the vertical plate 33, and the driven gear 37 and the incomplete gear 36 are meshed with each other. An elastic key is provided on the side of the driven gear 37 away from the incomplete gear 36. The elastic key can only rotate in one direction, so that the driven gear 37 can only rotate clockwise, and the elastic key will hinder the driven gear 37 from rotating counterclockwise. A push key is fixedly connected to the middle part of the end of the driven gear 37 away from the vertical plate 33. The driving rod 38, when the driving motor 35 drives the incomplete gear 36 to rotate, the incomplete gear 36 will drive the driven gear 37 to rotate synchronously, thereby driving the push rod 38 to rotate. During the rotation process, the push rod 38 will contact the driven rod 26 located above first, thereby driving the driven rod 26 to rotate and then driving the fixed ring 27 to rotate, thereby driving the guide groove 29 to move through the fixed ring 27 and then driving the closing plate 28 to rotate around the center position of the rotating rod 32. Through the cooperation of the incomplete gear 36 and the driven gear 37, after the push rod 38 rotates 180°, the incomplete gear 36 no longer drives the driven gear 37 to rotate, so that after the push rod 38 drives the driven rod 26 to rotate, the push rod 38 and the driven rod 26 remain stationary.Thereby, the closing plate 28 is kept away from the center position of the feeding hole, so that the injection molding material in the shell 8 has enough time to enter the inner cavity of the mixing bin 22. A centrally symmetrical reset groove 42 is provided at the upper end of the rotating ring 25. A reset rod 43 is slidably connected in the reset groove 42. The side wall of the reset rod 43 is elastically connected to the inner cavity side wall of the reset groove 42 through an arc spring. The upper end of the reset rod 43 is fixedly connected to the fixed ring 27. When the driven rod 26 is pushed by the pushing rod 38, the fixed ring 27 will drive the reset rod 43 to move in the inner cavity of the reset groove 42. Since the driven gear 37 cannot rotate counterclockwise, after the reset rod 43 is pulled by the elastic force, the pushing rod 38 will block the driven rod 26 to limit the position of the fixed ring 27. This prevents the closing plate 28 from resetting due to the elastic force after the fixing ring 27 rotates, so that the injection molding materials in the housing 8 have enough time to enter the mixing chamber 22. When the incomplete gear 36 drives the driven gear 37 to rotate again, the push rod 38 rotates clockwise again. After the push rod 38 pushes the driven rod 26 to move a certain distance, the push rod 38 is separated from the driven rod 26, and the upper closing plate 28 will reset to close the feed hole. The push rod 38 continues to rotate clockwise to contact the driven rod 26 at the bottom, so that the lower closing plate 28 is away from the center of the feed hole, so that the injection molding materials mixed in the inner cavity of the mixing chamber 22 enter the connecting cylinder 9 through the lower feed hole.

[0034] See also Figure 2 and Fig.11The bottom of the inner cavity of the mixing bin 22 is fixedly connected with a connecting plate 24, and the middle part of the upper end of the connecting plate 24 is transmission-connected with a motor, and the output end of the motor is transmission-connected with a stirring rod 23. The stirring rod 23 is driven by the motor to rotate so as to stir and mix different types of injection molding materials entering the inner cavity of the mixing bin 22, so that injection molding materials of different types and sizes are evenly mixed. When the push rod 38 contacts the driven rod 26 located above, the material passing hole above the mixing bin 22 is opened, and the injection molding materials enter the inner cavity of the mixing bin 22 from the shell 8 and are fully mixed under the action of the stirring rod 23. After the push rod 38 is separated from the driven rod 26 located above, the reset rod 43 will reset in the inner cavity of the reset groove 42 under the action of elastic force, thereby driving the fixing ring 27 to return to the initial position. During the reset process of the fixing ring 27, the closing plate 28 will block the material passing hole again through the cooperation of the guide groove 29 and the guide rod 31. During the process of the pushing rod 38 approaching the driven rod 26 located below, the stirring rod 23 will continue to stir and mix the injection molding materials in the inner cavity of the mixing chamber 22, and after the pushing rod 38 contacts the driven rod 26 located below and drives the driven rod 26 to rotate, the closing plate 28 located below will be The plate 28 will move away from the center of the feeding hole under the action of the guide groove 29 and the guide rod 31, thereby releasing the blockage of the feeding hole below, so that the injection molding material mixed in the mixing bin 22 can enter the connecting tube 9 through the feeding hole. When the push rod 38 moves away from the driven rod 26 below, the closing plate 28 will reset and block the feeding hole again under the action of the elastic force, that is, as the push rod 38 rotates intermittently, it will continuously push the symmetrical driven rod 26 to rotate during its rotation, thereby driving the closing plate 28 away from the center of the feeding hole, thereby releasing the mixing bin. The two ends of the inner cavity of 22 are blocked, and the push rod 38 can only contact one driven rod 26 at a time, so when the injection molding material enters the inner cavity of the mixing bin 22, the closing plates 28 located below are in a closed state of fitting each other, and when the injection molding material leaves the inner cavity of the mixing bin 22, the closing plates 28 located below are in a closed state of fitting each other, and through the cooperation of the incomplete gear 36 and the driven gear 37, the closing plates 28 will remain separated for a certain period of time after being away from the center position of the feed hole, so that the injection molding material has enough time to enter or leave the inner cavity of the mixing bin 22.

[0035] An injection molding machine includes a base 1, an extruder 3 is fixedly connected to the middle of the upper end of the base 1, a servo motor 4 is arranged at one end of the extruder 3, the lower end of the servo motor 4 is fixedly connected to the base 1, an injection mold 2 for injection molding is arranged on the side of the base 1 away from the servo motor 4, the lower end of a connecting cylinder 9 is fixedly connected to the upper end of the extruder 3 close to the servo motor 4, the injection molding material in the connecting cylinder 9 will enter the extruder 3, and melt from solid particles into liquid in the extruder 3, the screw in the extruder 3 is driven by the servo motor 4 to push the molten injection molding material into the injection mold 2, thereby completing the injection molding.

Claims

1. A feeding structure for injection molding, comprising a base, characterized in that: A symmetrical bracket is fixedly connected to the middle part of the upper end of the base, and a plurality of symmetrical fixing plates are symmetrically fixedly connected to the side of the bracket close to the base, and a feeding barrel is fixedly connected to the end of the fixing plate away from the bracket symmetrically, and a shell is fixedly connected to the middle part of the lower end of the feeding barrel, and a mixing bin is provided below the shell, and the mixing bin and the shell are both connected to the bracket through symmetrical fixing plates, and a symmetrical movable plate is slidably connected to the lower end of the shell, and an adjusting mechanism for driving the movable plate to move horizontally is provided at the lower end of the shell, and the adjusting mechanism includes a knob, and when the knob is rotated, the movable plate close to the knob side is driven to reciprocate horizontally, and when the knob is rotated after moving horizontally toward the shell, the movable plate away from the knob side is driven to reciprocate horizontally.

2. The injection molding feeding structure according to claim 1, characterized in that: A partition plate is fixedly connected to the middle part of the inner cavity of the shell, the movable plate is slidably connected to the inner cavity of the shell, a transmission rod is fixedly connected to the middle part of the knob close to the shell, the outer wall of the transmission rod is rotatably connected to the shell, a notch is opened on the side wall of the movable plate for cooperating with the transmission rod, symmetrical mounting plates are fixedly connected to the positions of the shell and the partition plate close to the notch, a symmetrical balance rod is fixedly connected to the side of the symmetrical mounting plate close to the transmission rod, and a positioning block is slidably connected to the end of the balance rod away from the mounting plate.

3. The injection molding feeding structure according to claim 2, characterized in that: A symmetrical extension rod is fixedly connected to the middle part of the outer wall of the mounting plate, and a support rod is fixedly connected to one end of the extension rod away from the mounting plate. An inner gear ring is provided on the outer wall of the transmission rod near the positioning block, and an outer gear ring is fixedly connected to the outer wall of the inner gear ring. An annular groove is provided on the outer wall of the inner gear ring, and an arc block is fixedly connected to one end of the support rod away from the extension rod, the size of the arc block is adapted to the annular groove, and the arc block is slidably connected in the annular groove.

4. The injection molding feeding structure according to claim 2, characterized in that: The outer wall of the transmission rod is fixedly connected with a fixed block near the inner gear ring, and a symmetrical mounting block is fixedly connected to the side of the fixed block away from the partition plate, and a movable block is vertically slidably connected to the side close to the fixed block, and the movable block and the mounting block are elastically connected by a spring, and symmetrical racks are fixedly connected to the upper and lower sides of the inner cavity of the movable plate, and the symmetrical racks are symmetrical about the center of the circle of the transmission rod, the symmetrical rack located at the top is fixedly connected to the movable plate on one side, and the symmetrical rack located at the bottom is fixedly connected to the movable plate on the other side, the outer gear ring is meshed with the rack, and the inner gear ring is meshed with two ends of the fixed block.

5. The injection molding feeding structure according to claim 4, characterized in that: Symmetrical opening and closing mechanisms are provided at both ends of the mixing bin, and the opening and closing mechanisms include a fixed ring, a rotating ring is provided above the fixed ring, the lower end of the rotating ring is rotatably connected to the fixed ring, the upper end of the rotating ring located above is rotatably connected to the shell, and discharge holes are provided at the upper ends of the rotating ring and the fixed ring, and the positions of the discharge holes correspond to the positions of the movable plate, the rotating ring located below is rotatably connected to the lower end of the mixing bin, and the end of the rotating ring located below which is away from the fixed ring is fixedly connected to a connecting tube, and a driven rod is fixedly connected to one side of the outer wall of the fixed ring, and the driven rod is located on the side of the outer wall of the rotating ring close to the knob.

6. The injection molding feeding structure according to claim 5, characterized in that: A closing plate is centrally symmetrically arranged between the fixed ring and the rotating ring, an end of the closing plate away from the center of the rotating ring is rotatably connected to a rotating rod, the lower end of the rotating rod is fixedly connected to the rotating ring, a connecting block is fixedly connected to the outer wall of the closing plate away from the rotating rod, the upper end of the connecting block is fixedly connected to a guide rod, a guide groove for cooperating with the guide rod is provided at the lower end of the fixed ring, and the upper outer wall of the guide rod is slidably matched with the guide groove.

7. The injection molding feeding structure according to claim 6, characterized in that: A horizontal plate is fixedly connected to a side of the outer wall of the connecting cylinder close to the knob, a vertical plate is fixedly connected to an upper end of the horizontal plate away from the connecting cylinder, a driving motor is transmission-connected to an upper end of the vertical plate close to a mixing bin, an incomplete gear is transmission-connected to an end of the driving motor away from the vertical plate, a driven gear is rotatably connected to the outer wall of the vertical plate, and the driven gear and the incomplete gear are meshed with each other.

8. The injection molding feeding structure according to claim 7, characterized in that: A reset groove symmetrically located about the center of the rotating ring is provided at the upper end of the rotating ring, a reset rod is slidably connected in the reset groove, the side wall of the reset rod is elastically connected to the inner cavity side wall of the reset groove via an arc spring, and the upper end of the reset rod is fixedly connected to the fixing ring.

9. The injection molding feeding structure according to claim 8, characterized in that: A connecting plate is fixedly connected to the bottom of the inner cavity of the mixing bin, a motor is transmission-connected to the middle of the upper end of the connecting plate, a stirring rod is transmission-connected to the output end of the motor, the vertical height of the stirring rod is the same as the vertical height of the mixing bin, and the horizontal length of the stirring rod is reduced by the inner cavity diameter of the mixing bin.

10. An injection molding machine, comprising a base, the upper end of which is fixedly connected to an extruder, characterized in that: It also includes a feeding structure for injection molding as described in any one of claims 1 to 9, wherein an extruder is fixedly connected to the middle of the upper end of the base, a servo motor is provided at one end of the extruder, the lower end of the servo motor is fixedly connected to the base, the servo motor is close to the vertical plate, the feeding barrel is located between the extruder and the injection mold, an injection mold for injection molding is provided on the side of the base away from the servo motor, the lower end of the connecting barrel is fixedly connected to the side of the upper end of the extruder close to the servo motor, and the interval between the symmetrical brackets is greater than the width of the base.

Images