Blanking device of injection molding machine

Abstract

The invention relates to the technical field of injection molding machines, and discloses a discharging device of an injection molding machine. Comprising a machine frame, a material drying barrel installed on the machine frame, a material pipe communicated with the material drying barrel and located below the material drying barrel, a heating system installed outside the material pipe, a screw rotating in the material pipe and a feeding motor installed on the material pipe and driving the screw to rotate, and a material injection opening is formed in the end of the material pipe. A material injection plate is fixed to the machine frame, a material pouring opening communicated with the material injection opening is formed in the material injection plate, the machine frame is connected with a mold in a sliding mode, the material injection plate is located between the mold and the material pipe, and the machine frame is symmetrically connected with cutters located on the two sides of the mold in a sliding mode. And the rack is provided with a driving assembly for driving the cutter to move. The device has the following advantages and effects that the sprue material on the plastic part can be automatically cut off after the plastic part is formed, the subsequent manpower is saved, and the processing efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of injection molding machines, in particular to a material unloading device for an injection molding machine. Background Art

[0002] Injection molding machine is also known as injection molding machine or injection machine. It is the main molding equipment that uses plastic molding molds to make plastic products of various shapes from thermoplastics or thermosetting plastics. It is divided into vertical, horizontal, and all-electric types. The injection molding machine can heat the plastic and apply high pressure to the molten plastic to make it eject and fill the mold cavity. The injection system is one of the most important components of the injection molding machine. Generally, there are three main forms: plunger type, screw type, and screw pre-plastic plunger injection type. The most widely used is the screw type. Its function is to heat and plasticize a certain amount of plastic within a specified time in one cycle of the injection molding machine, and then inject the molten plastic into the mold cavity through the screw at a certain pressure and speed. After the injection is completed, the molten material injected into the mold cavity is kept in shape.

[0003] Since the injection molding machine injects molten plastic into the molding mold from the gate, gate material is inevitable after the plastic parts are molded. The gate material is combined with the plastic parts. Usually, the gate material is cut off manually with scissors in the later stage, which is labor-intensive and reduces processing efficiency. Summary of the invention

[0004] The purpose of the invention is to provide a material unloading device for an injection molding machine, which has the effect of timely processing gate materials and saving labor.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions: a feeding device for an injection molding machine, comprising a frame, a drying barrel installed on the frame, a material pipe connected to the drying barrel and located below the drying barrel, a heating system installed outside the material pipe, a screw rotating in the material pipe and a feeding motor installed on the material pipe for driving the screw to rotate, an injection port is provided at the end of the material pipe, an injection plate is fixed to the frame, a pouring port connected to the injection port is provided on the injection plate, a mold is slidably connected to the frame, the injection plate is located between the mold and the material pipe, the frame is symmetrically slidably connected to cutters located on both sides of the mold, and the frame is equipped with a driving assembly for driving the cutter to move.

[0006] By adopting the above technical scheme, plastic raw material particles are poured from the top of the drying barrel, the drying barrel pre-stores the dried plastic raw material particles and guides the plastic raw material into the material pipe, the feeding motor drives the screw to rotate to convey the plastic raw material forward along the material pipe, the heating system heats the plastic raw material in the material pipe to melt and mix it, and finally the raw material is injected into the mold through the injection port and the pouring port, and the mold and the injection plate are both provided with cooling systems, so that the plastic parts in the mold are finally cooled and formed, the mold moves and then brings the plastic parts out from between the mold and the injection plate, the plastic parts are separated from the injection plate, and the raw material located in the pouring port is formed and fixed on the plastic parts, that is, the pouring material, and the driving motor drives the cutters on both sides to move relatively close to the pouring material to cut the pouring material from the plastic parts, thereby saving manpower and improving the processing efficiency of plastic parts.

[0007] The present invention is further configured as follows: the frame is slidably connected with a connecting plate, the mold is fixed on the connecting plate, the connecting plate is slidably connected with a top plate, the top plate is located between the connecting plate and the mold, the mold is provided with a through hole, the top plate is fixed with a top rod inserted and slid in the through hole, a first spring sleeved on the outside of the top rod is fixed between the top plate and the mold, a connecting rod inserted and slid on the connecting plate is fixed to one end of the top plate away from the top rod, the frame is installed with a driving cylinder, the output end of the driving cylinder is fixed to the connecting plate, and the frame is fixed with a fixing rod facing the connecting rod.

[0008] By adopting the above technical solution, after the plastic parts in the mold are finally cooled and formed, the driving cylinder drives the connecting plate and the mold to move away from the injection plate, so that the plastic parts in the mold are separated from the injection plate. When the connecting plate and the mold continue to move, the connecting rod on the top plate is against the fixed rod, and the connecting rod slides to push the top plate to move toward the mold. The top rod extends from the through hole to push the plastic parts out of the mold, completing the automatic unloading of the plastic parts.

[0009] The present invention is further configured as follows: the driving assembly includes symmetrically arranged reciprocating screws rotatably connected to both sides of the frame, the reciprocating screws on both sides are connected by a connecting shaft, a driving motor for driving the reciprocating screws to rotate is installed on the frame, a horizontal guide rod parallel to the reciprocating screw is fixed to the frame, the reciprocating screw is threadedly connected to a movable frame sliding on the horizontal guide rod, and the cutter is fixed on the movable frame.

[0010] By adopting the above technical scheme, the gate material on the plastic part is sheared after the plastic part is separated from the injection plate and before automatic unloading, so that the driving motor drives the reciprocating screw to rotate relative to the frame, and the reciprocating screws on both sides rotate synchronously through the connecting shaft, driving the moving frames on both sides to reciprocate along the horizontal guide rod. When the cutters on both sides approach each other, the gate material on the plastic part is cut off, and when the cutters on both sides move away from each other, they return to their original positions without affecting the molding work of the plastic part.

[0011] The present invention is further configured as follows: a pressure plate is slidably connected to the movable frame, a sleeve rod is fixed to the movable frame, a sliding rod sliding on the sleeve rod is fixed to the pressure plate, a second spring is fixed between one end of the sliding rod located inside the sleeve rod and the sleeve rod, and the distance between the pressure plate and the mold is smaller than the distance between the cutter and the mold.

[0012] By adopting the above technical solution, when the movable frame moves closer to each other, the pressure plates on both sides approach the plastic part before the cutter to clamp the plastic part on the mold, and then the movable frame continues to move, and the end of the slide rod shrinks into the sleeve rod, so that the cutters on both sides approach to cut off the gate material, thereby avoiding the movement of the plastic part during the cutting work and improving the stability of the cutting work.

[0013] The present invention is further configured as follows: a material receiving box is fixed at the bottom of the movable frame, a material discharge port is provided on one side of the material receiving box, a cover plate is slidably provided on the material receiving box to block the material discharge port, a material pouring slope inclined toward the material discharge port is provided at the bottom of the material receiving box, and the material receiving box is provided with a control component for controlling the movement of the cover plate.

[0014] By adopting the above technical solution, when the cutters on both sides approach each other to cut off the gate material, the gate material falls into the receiving box. When the connecting frame moves away from the mold, the receiving box is also moved away from the bottom of the plastic part. Then the plastic part is pushed down by the ejector rod. A conveyor belt can be set under the frame to remove the pushed down plastic part or collect the plastic part, so that the gate material and the plastic part can be collected separately, thereby improving the convenience of subsequent processing. When the connecting frame drives the receiving box to move close to the side of the frame, the control component controls the cover plate to move to open the discharge port, and the gate material in the receiving box falls out of the receiving box through the pouring slope, which is convenient for subsequent processing.

[0015] The present invention is further configured as follows: the control component includes a vertical screw rod rotatably connected to the outer wall of the material receiving box, a vertical guide rod fixed to the material receiving box and parallel to the vertical screw rod, and a gear fixed to the bottom end of the vertical screw rod; a rack meshing with the gear is fixed on one side of the frame, and both sides of the cover plate are respectively threadedly connected to the vertical screw rod and slide on the vertical guide rod.

[0016] By adopting the above technical solution, when the connecting frame drives the receiving box to move closer to the side of the frame, the gear begins to engage with the rack. Under the movement of the connecting frame, the gear rotates to drive the vertical screw rod to rotate, and then drives the cover plate to move up along the vertical guide rod, thereby opening the discharge port; when the connecting frame drives the receiving box to move closer to the mold to prepare for cutting, the gear rotates to drive the vertical screw rod to move in the opposite direction, driving the cover plate to move down along the vertical guide rod to close the discharge port.

[0017] The present invention is further configured as follows: a processing box located at the bottom of the material receiving box is fixed on one side of the frame, the processing box is divided into a rolling chamber and a cleaning chamber from top to bottom, a rotating shaft located in the rolling chamber is rotatably connected to the processing box, a rolling block is fixed to the rotating shaft along its axial direction, a filter plate located below the rolling block is fixed to the processing box, and the filter plate is in a downwardly concave arc shape.

[0018] By adopting the above technical solution, when the cover plate opens the discharge port, the discharge port is located above the processing box, and the gate material in the processing box falls into the processing box. The rotation of the rotating shaft drives multiple rolling blocks to rotate and roll the gate material on the filter plate, and the gate material is rolled into particles that meet the size of the filter hole of the filter plate. The arc-shaped filter plate enables the gate material to always have better contact with the rolling blocks, so that it is efficiently rolled, and then the granular gate material falls into the cleaning chamber for cleaning, and the cleaned granular gate material is re-injected into the drying barrel to realize the recycling of the gate material, saving costs, and eliminating the need for secondary processing by processing personnel, thereby further improving processing efficiency.

[0019] The present invention is further configured as follows: the processing box is rotatably connected to a stirring shaft located in the cleaning chamber and below the filter plate, and a stirring rod is axially fixed to the stirring shaft.

[0020] By adopting the above technical solution, the granular gate material passes through the filter plate and falls into the cleaning chamber, the cleaning chamber is filled with water, and the stirring shaft drives the stirring rod to rotate, so as to more efficiently clean the granular gate material in the cleaning chamber.

[0021] The present invention is further configured as follows: a first transmission belt is sleeved between the end of the reciprocating screw and the rotating shaft, and a second transmission belt is sleeved between the rotating shaft and the driving shaft.

[0022] By adopting the above technical solution, the driving motor drives the reciprocating screws on both sides to rotate, and then the reciprocating screws drive the moving frames on both sides to move back and forth. At the same time, when the reciprocating screws rotate, the first transmission belt and the second transmission belt drive the rotating shaft and the driving shaft to rotate synchronously to crush or clean the gate material, thereby ensuring that multiple processes are carried out simultaneously and shortening the processing time.

[0023] The present invention is further configured as follows: the treatment box is fixed with a water outlet pipe connected to the cleaning chamber, a filter screen and a control valve are installed in the water outlet pipe, and a box door is hinged on one side of the treatment box.

[0024] By adopting the above technical solution, after cleaning, the control valve is opened to release the water in the treatment box from the outlet pipe, and the box door is opened to take out the granular materials in the treatment box for recycling.

[0025] The beneficial effects of the present invention are:

[0026] 1. Cooling systems are distributed in the mold and the injection plate, so that the plastic parts in the mold are finally cooled and formed. The mold moves to bring the plastic parts out from between the mold and the injection plate. The plastic parts are separated from the injection plate. The raw materials in the pouring gate are formed and fixed on the plastic parts, which is the pouring material. The driving motor drives the cutters on both sides to move relatively close to the pouring material, and the pouring material is cut off from the plastic parts, saving manpower and improving the processing efficiency of plastic parts.

[0027] 2. When the moving frame moves closer to each other, the pressure plates on both sides approach the plastic parts before the cutters to clamp the plastic parts on the mold. Then the moving frame continues to move, and the end of the slide bar shrinks into the sleeve bar, so that the cutters on both sides approach to cut off the gate material, avoiding the movement of the plastic parts during the cutting process and improving the stability of the cutting process.

[0028] 3. When the cutters on both sides approach each other to cut off the gate material, the gate material falls into the receiving box. When the connecting frame moves away from the mold, the receiving box is also moved away from under the plastic part. Then the plastic part is pushed down by the ejector. A conveyor belt can be set under the frame to remove the pushed down plastic part or collect the plastic part, so that the gate material and the plastic part can be collected separately, which improves the convenience of subsequent processing;

[0029] 4. When the cover plate opens the discharge port, the discharge port is located above the processing box, and the gate material in the processing box falls into the processing box. The rotation of the shaft drives multiple rolling blocks to rotate and roll the gate material on the filter plate, and rolls the gate material into particles that meet the size of the filter plate filter holes. The arc-shaped filter plate enables the gate material to always have better contact with the rolling blocks, so that it is efficiently rolled, and then the granular gate material falls into the cleaning chamber for cleaning, and the cleaned granular gate material is re-filled into the drying barrel to realize the recycling of the gate material, saving costs, and no need for secondary processing by processing personnel, further improving processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 It is a schematic diagram of the structure of the present invention.

[0032] Figure 2 It is a front view cross-sectional structural schematic diagram of the present invention.

[0033] Figure 3 yes Figure 2 Enlarged view of point A in the middle.

[0034] Figure 4It is a schematic diagram of the positional relationship among the movable rack, the material receiving box and the processing box in the present invention.

[0035] Figure 5 It is a side cross-sectional structural schematic diagram of the present invention.

[0036] In the figure, 1, frame; 2, drying barrel; 3, material pipe; 4, heating system; 5, screw; 6, feeding motor; 7, injection port; 8, injection plate; 9, pouring port; 10, mold; 11, cutter; 12, drive assembly; 121, reciprocating screw; 122, connecting shaft; 123, drive motor; 124, horizontal guide rod; 125, moving frame; 13, connecting plate; 14, top plate; 15, through hole; 16, top rod; 17, first spring; 18, connecting rod; 19, drive cylinder; 20, Fixed rod; 21, pressure plate; 22, sleeve rod; 23, material receiving box; 24, material discharge port; 25, cover plate; 26, material pouring slope; 27, control component; 271, vertical screw rod; 272, vertical guide rod; 273, gear; 274, rack; 28, processing box; 29, rolling chamber; 30, cleaning chamber; 31, rotating shaft; 32, rolling block; 33, filter plate; 34, stirring shaft; 35, stirring rod; 36, first transmission belt; 37, second transmission belt; 38, water outlet pipe; 39, sliding rod. DETAILED DESCRIPTION

[0037] The technical solution of the present invention will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Embodiment 1, a material discharging device for an injection molding machine, such as Figure 1 , Figure 2As shown, it includes a frame 1, a drying barrel 2 installed on the frame 1, a material pipe 3 connected to the drying barrel 2 and located below the drying barrel 2, a heating system 4 installed outside the material pipe 3, a screw 5 rotating in the material pipe 3 and a feeding motor 6 installed on the material pipe 3 to drive the screw 5 to rotate, an injection port 7 is provided at the end of the material pipe 3, an injection plate 8 is fixed to the frame 1, and a pouring port 9 connected to the injection port 7 is provided on the injection plate 8, a mold 10 is slidably connected to the frame 1, and the injection plate 8 is located between the mold 10 and the material pipe 3, and cutters 11 located on both sides of the mold 10 are symmetrically slidably connected to the frame 1, and a driving component 12 for driving the cutter 11 to move is installed on the frame 1, and plastic raw material particles are poured from the top of the drying barrel 2, and the drying barrel 2 stores in advance The plastic raw material particles are dried and introduced into the material pipe 3, the feeding motor 6 drives the screw 5 to rotate and transport the plastic raw material forward along the material pipe 3, the heating system 4 heats the plastic raw material in the material pipe 3 to melt and mix it, and finally the raw material is injected into the mold 10 through the injection port 7 and the pouring port 9. The mold 10 and the injection plate 8 are both provided with cooling systems, so that the plastic parts in the mold 10 are finally cooled and formed, the mold 10 moves and then brings the plastic parts out from between the mold 10 and the injection plate 8, the plastic parts are separated from the injection plate 8, and the raw material located in the pouring port 9 is formed and fixed on the plastic parts, that is, the pouring material, and the driving motor 123 drives the cutters 11 on both sides to move relatively close to the pouring material to cut the pouring material from the plastic parts.

[0039] like Figure 2 , Figure 3 As shown, the frame 1 is slidably connected with a connecting plate 13, the mold 10 is fixed to the connecting plate 13, the connecting plate 13 is slidably connected with a top plate 14, the top plate 14 is located between the connecting plate 13 and the mold 10, the mold 10 is provided with a through hole 15, the top plate 14 is fixed with a top rod 16 inserted and slid in the through hole 15, a first spring 17 sleeved on the outside of the top rod 16 is fixed between the top plate 14 and the mold 10, and a connecting rod 18 inserted and slid in the connecting plate 13 is fixed at one end of the top plate 14 away from the top rod 16. The frame 1 is installed with a driving cylinder 19, the output end of the driving cylinder 19 is fixed to the connecting plate 13, and the frame 1 is fixed with a fixing rod 20 facing the connecting rod 18. The plastic in the mold 10 After the part is finally cooled and formed, the driving cylinder 19 drives the connecting plate 13 and the mold 10 to move away from the injection plate 8, so that the plastic part in the mold 10 is separated from the injection plate 8. When the connecting plate 13 and the mold 10 continue to move, the connecting rod 18 on the top plate 14 is against the fixed rod 20, and the connecting rod 18 slides to push the top plate 14 to move toward the mold 10. The ejector rod 16 extends from the through hole 15 to push the plastic part out of the mold 10, completing the automatic unloading of the plastic part. The driving cylinder 19 drives the connecting plate 13 and the mold 10 to return. The top plate 14 is pushed by the first spring 17 to resist the connecting plate 13 again, and the end of the ejector rod 16 retracts into the through hole 15.

[0040] like Figure 1As shown, the driving assembly 12 includes a symmetrically arranged reciprocating screw rod 121 that is rotatably connected to both sides of the frame 1, and the reciprocating screw rods 121 on both sides are connected by a connecting shaft 122. A driving motor 123 for driving the reciprocating screw rod 121 to rotate is installed on the frame 1. A horizontal guide rod 124 parallel to the reciprocating screw rod 121 is fixed to the frame 1. The reciprocating screw rod 121 is threadedly connected to a movable frame 125 that slides on the horizontal guide rod 124. The cutter 11 is fixed on the movable frame 125. After the plastic part is separated from the injection plate 8 and before the push rod 16 pushes the plastic part to be automatically unloaded, the gate material on the plastic part is sheared, so that the driving motor 123 drives the reciprocating screw rod 121 to rotate relative to the frame 1, and the reciprocating screw rods 121 on both sides rotate synchronously through the connecting shaft 122, driving the moving frames 125 on both sides to reciprocate along the horizontal guide rod 124. When the cutters 11 on both sides approach each other, the gate material on the plastic part is cut off, and when the cutters 11 on both sides move away from each other, they return to their original positions without affecting the molding work of the plastic part.

[0041] like Figure 1 , Figure 4 As shown, a pressure plate 21 is slidably connected to the movable frame 125, a sleeve rod 22 is fixed on the movable frame 125, a slide bar 39 is fixed on the pressure plate 21 and slides on the sleeve rod 22, a second spring is fixed between one end of the slide bar 39 located in the sleeve rod 22 and the sleeve rod 22, the distance between the pressure plate 21 and the mold 10 is smaller than the distance between the cutter 11 and the mold 10, when the movable frame 125 moves relatively close, the pressure plates 21 on both sides approach the plastic parts before the cutter 11 to clamp the plastic parts on the mold 10, and then the movable frame 125 continues to move, and the end of the slide bar 39 shrinks into the sleeve rod 22, so that the cutters 11 on both sides are close to cut off the gate material, thereby avoiding the movement of the plastic parts during the cutting operation; when the cutter 11 returns, the slide bar 39 is re-extended under the push of the second spring in the sleeve rod 22.

[0042] like Figure 1 , Figure 4 As shown, a material receiving box 23 is fixed at the bottom of the movable frame 125, and a material discharge port 24 is provided on one side of the material receiving box 23. A cover plate 25 is slidably provided on the material receiving box 23 to cover the material discharge port 24. A material pouring slope 26 inclined toward the lower material port 24 is provided at the bottom of the material receiving box 23. The material receiving box 23 is provided with a control component 27 for controlling the movement of the cover plate 25. When the cutters 11 on both sides approach each other to cut off the gate material, the gate material falls into the material receiving box 23. When the connecting frame moves away from the mold 10, the material receiving box 23 is also moved away from under the plastic part at the same time. Then the plastic part is pushed down by the push rod 16. A conveyor belt can be set under the frame 1 to remove the pushed down plastic part or collect the plastic part, so that the gate material and the plastic part can be collected separately, thereby improving the convenience of subsequent processing.

[0043] like Figure 4 , Figure 5As shown, the control assembly 27 includes a vertical screw rod 271 rotatably connected to the outer wall of the receiving box 23, a vertical guide rod 272 fixed to the receiving box 23 and parallel to the vertical screw rod 271, and a gear 273 fixed to the bottom end of the vertical screw rod 271. A rack 274 meshing with the gear 273 is fixed on one side of the frame 1. Both sides of the cover plate 25 are respectively threadedly connected to the vertical screw rod 271 and slide on the vertical guide rod 272. When the connecting frame drives the receiving box 23 to move closer to the side of the frame 1, the connecting frame 25 moves to the vertical screw rod 271 and slides on the vertical guide rod 272. When the connecting frame moves, the gear 273 starts to mesh with the rack 274. Under the movement of the connecting frame, the gear 273 rotates to drive the vertical screw rod 271 to rotate, and then drives the cover plate 25 to move up along the vertical guide rod 272, thereby opening the discharge port 24; when the connecting frame drives the receiving box 23 to move toward the direction close to the mold 10 to prepare for cutting, the gear 273 rotates to drive the vertical screw rod 271 to move in the opposite direction, and drives the cover plate 25 to move down along the vertical guide rod 272 to close the discharge port 24.

[0044] like Figure 4 , Figure 5 As shown, a processing box 28 located at the bottom of the receiving box 23 is fixed on one side of the frame 1, and the processing box 28 is divided into a rolling chamber 29 and a cleaning chamber 30 from top to bottom. A rotating shaft 31 located in the rolling chamber 29 is rotatably connected in the processing box 28, and a rolling block 32 is fixed to the rotating shaft 31 along its axial direction. A filter plate 33 located below the rolling block 32 is fixed to the processing box 28, and the filter plate 33 is in an arc shape that is concave downward. The processing box 28 is rotatably connected to a stirring shaft 34 located in the cleaning chamber 30 and below the filter plate 33, and a stirring rod 35 is fixed to the stirring shaft 34 along the axial direction. When the cover plate 25 opens the discharge port 24, the discharge port 2 4 is located above the processing box 28, and the gate material in the processing box 28 falls into the processing box 28. The rotating shaft 31 rotates to drive the multiple rolling blocks 32 to rotate and roll the gate material on the filter plate 33, and rolls the gate material into particles that meet the filter hole size of the filter plate 33. The arc-shaped filter plate 33 allows the gate material to always be in better contact with the rolling blocks 32, so that it is efficiently rolled. Then the granular gate material falls into the cleaning chamber 30 for stirring and cleaning. The cleaned granular gate material is re-filled into the drying barrel 2 to realize the recycling of the gate material, saving costs, and eliminating the need for secondary processing by processing personnel, thereby further improving processing efficiency.

[0045] like Figure 5 As shown, a first transmission belt 36 is sleeved between the end of the reciprocating screw 121 and the rotating shaft 31, and a second transmission belt 37 is sleeved between the rotating shaft 31 and the driving shaft. The driving motor 123 drives the reciprocating screws 121 on both sides to rotate, and then the reciprocating screw 121 drives the moving frames 125 on both sides to reciprocate. At the same time, when the reciprocating screw 121 rotates, the first transmission belt 36 and the second transmission belt 37 drive the rotating shaft 31 and the driving shaft to rotate synchronously to crush or clean the gate material, thereby ensuring that multiple processes are carried out simultaneously and shortening the processing time.

[0046] like Figure 5 As shown, the treatment box 28 is fixed with a water outlet pipe 38 connected to the cleaning chamber 30, and a filter screen and a control valve are installed in the water outlet pipe 38. A box door is hinged on one side of the treatment box 28. After cleaning, the control valve is opened to release the water in the treatment box 28 from the water outlet pipe 38, and the box door is opened to take out the granular material in the treatment box 28 for recovery.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A material unloading device for an injection molding machine, comprising a frame (1), a drying barrel (2) mounted on the frame (1), a material pipe (3) connected to the drying barrel (2) and located below the drying barrel (2), a heating system (4) mounted outside the material pipe (3), a screw (5) rotating in the material pipe (3), and a feeding motor (6) mounted on the material pipe (3) for driving the screw (5) to rotate, wherein an injection port (7) is provided at the end of the material pipe (3), and the characteristics are as follows: The frame (1) is fixed with an injection plate (8), the injection plate (8) is provided with a pouring port (9) connected to the injection port (7), the frame (1) is slidably connected with a mold (10), the injection plate (8) is located between the mold (10) and the material pipe (3), the frame (1) is symmetrically slidably connected with cutters (11) respectively located on both sides of the mold (10), and the frame (1) is equipped with a driving component (12) for driving the cutter (11) to move.

2. The unloading device for an injection molding machine according to claim 1, characterized in that: The frame (1) is slidably connected to a connecting plate (13), the mold (10) is fixed to the connecting plate (13), the connecting plate (13) is slidably connected to a top plate (14), the top plate (14) is located between the connecting plate (13) and the mold (10), the mold (10) is provided with a through hole (15), the top plate (14) is fixed with a top rod (16) inserted and slidable in the through hole (15), the top plate (14) and the A first spring (17) sleeved on the outside of the push rod (16) is fixed between the molds (10); a connecting rod (18) inserted and slidably connected to the connecting plate (13) is fixed to the end of the top plate (14) away from the push rod (16); a driving cylinder (19) is installed on the frame (1); the output end of the driving cylinder (19) is fixed to the connecting plate (13); and a fixing rod (20) facing the connecting rod (18) is fixed to the frame (1).

3. The unloading device for an injection molding machine according to claim 1, characterized in that: The driving assembly (12) comprises symmetrically arranged reciprocating screws (121) rotatably connected to two sides of the frame (1); the reciprocating screws (121) on both sides are connected via a connecting shaft (122); a driving motor (123) for driving the reciprocating screws (121) to rotate is mounted on the frame (1); a horizontal guide rod (124) parallel to the reciprocating screw (121) is fixed to the frame (1); the reciprocating screw (121) is threadedly connected to a movable frame (125) slidable on the horizontal guide rod (124); and the cutter (11) is fixed on the movable frame (125).

4. The unloading device for an injection molding machine according to claim 3, characterized in that: A pressing plate (21) is slidably connected to the movable frame (125), a sleeve rod (22) is fixed to the movable frame (125), a sliding rod (39) sliding on the sleeve rod (22) is fixed to the pressing plate (21), a second spring is fixed between one end of the sliding rod (39) located inside the sleeve rod (22) and the sleeve rod (22), and the distance between the pressing plate (21) and the mold (10) is smaller than the distance between the cutting knife (11) and the mold (10).

5. The unloading device for an injection molding machine according to claim 4, characterized in that: A material receiving box (23) is fixed at the bottom of the movable frame (125), a material discharge port (24) is provided on one side of the material receiving box (23), a cover plate (25) is slidably provided on the material receiving box (23) to cover the material discharge port (24), a material pouring inclined surface (26) inclined toward the material discharge port (24) is provided at the bottom of the material receiving box (23), and a control component (27) is provided to control the movement of the cover plate (25).

6. The unloading device for an injection molding machine according to claim 5, characterized in that: The control assembly (27) comprises a vertical screw rod (271) rotatably connected to the outer wall of the material receiving box (23), a vertical guide rod (272) fixed to the material receiving box (23) and parallel to the vertical screw rod (271), and a gear (273) fixed to the bottom end of the vertical screw rod (271); a rack (274) meshing with the gear (273) is fixed to one side of the frame (1); and two sides of the cover plate (25) are respectively threadedly connected to the vertical screw rod (271) and slide on the vertical guide rod (272).

7. The unloading device for an injection molding machine according to claim 5, characterized in that: A processing box (28) located at the bottom of the material receiving box (23) is fixed on one side of the frame (1); the processing box (28) is divided into a rolling chamber (29) and a cleaning chamber (30) from top to bottom; a rotating shaft (31) located in the rolling chamber (29) is rotatably connected to the processing box (28); a rolling block (32) is fixed to the rotating shaft (31) along its axial direction; a filter plate (33) located below the rolling block (32) is fixed to the processing box (28); and the filter plate (33) is in the shape of an arc that is concave downwards.

8. The unloading device for an injection molding machine according to claim 7, characterized in that: The processing box (28) is rotatably connected to a stirring shaft (34) located in the cleaning chamber (30) and below the filter plate (33), and a stirring rod (35) is fixed to the stirring shaft (34) along the axial direction.

9. The unloading device for an injection molding machine according to claim 8, characterized in that: A first transmission belt (36) is sleeved between the end of the reciprocating screw rod (121) and the rotating shaft (31), and a second transmission belt (37) is sleeved between the rotating shaft (31) and the driving shaft.

10. The unloading device for an injection molding machine according to claim 9, characterized in that: The treatment box (28) is fixed with a water outlet pipe (38) connected to the cleaning chamber (30), a filter screen and a control valve are installed in the water outlet pipe (38), and a box door is hinged on one side of the treatment box (28).

Images