Feeding structure of injection molding machine

Abstract

The utility model provides a feeding structure of an injection molding machine and relates to the technical field of injection molding. The feeding mechanism is used for solving the technical problem that when raw materials of the feeding mechanism of the injection molding machine provided by the existing patent are insufficient, a worker needs to climb to the top of a supporting pipe by using a ladder to supplement the materials, and potential safety hazards exist. A feeding structure of an injection molding machine comprises a supporting frame, a discharging barrel, a conveying assembly, a fixing ring and fixing rods, the multiple fixing rods are fixedly connected to the supporting frame, the fixing rings are jointly and fixedly connected to the multiple fixing rods, the discharging barrel is installed on the fixing rings, and the conveying assembly used for conducting hot melting on injection molding raw materials and conveying the injection molding raw materials to an injection molding grinding tool is arranged in the supporting frame. Raw materials are poured into the charging barrel, then the servo motor is started to drive the chain wheel to rotate on the supporting plate, the charging barrel is driven by the chain to slide upwards along the guide frame, and the charging barrel is turned over at the top of the guide frame, so that the raw materials in the charging barrel are poured into the discharging barrel, and the effect of conveniently supplementing the discharging barrel is achieved.

Description

Technical Field

[0001] The utility model provides a feeding structure for an injection molding machine, which relates to the technical field of injection molding. Background Art

[0002] An injection molding machine, also known as an injection molding press or an injection machine, is the main molding equipment for making various shaped plastic products from thermoplastic or thermosetting plastics using plastic molding dies. It is divided into vertical, horizontal, and all-electric types. The injection molding machine can heat the plastic, apply high pressure to the molten plastic, and inject it to fill the mold cavity.

[0003] A patent with the patent authorization announcement number CN218928448U discloses a feeding mechanism for an injection molding machine. In this patent, hot melt adhesive is poured into the feeding frame and screened by a shunt plate. The dust in the hot melt adhesive is blown out by starting a guiding fan, and the dust is blown onto a second protective net by a dust removal fan on the other side. The heater is started to preheat the hot melt adhesive. The hot melt adhesive falls onto a rotating disk, and the driving motor is started to drive the stirring rod to rotate. Through the cooperation of the first groove and the second groove, intermittent feeding is formed. The hot melt adhesive is led out through the spiral feeding rod in the material pipe and then molded. However, the feeding mechanism for the injection molding machine provided by this patent still has deficiencies in actual use. When the raw materials in the support pipe are insufficient, workers need to use a ladder to climb to the top of the support pipe and pour the raw materials into the support pipe. The operation is troublesome, and when pouring materials on the ladder, the workers need to take their hands off the ladder, which poses a certain safety hazard and is likely to cause people to fall and get injured.

[0004] Therefore, a feeding structure for an injection molding machine that facilitates replenishing materials is needed. Content of the Utility Model

[0005] In order to overcome the drawback that when the raw materials of the feeding mechanism for the injection molding machine provided by the existing patent are insufficient, workers need to use a ladder to climb to the top of the support pipe for replenishing materials, which poses a safety hazard, the utility model provides a feeding structure for an injection molding machine that facilitates replenishing materials.

[0006] To achieve the above object, the embodiments of the present utility model provide the following technical solutions: A feeding structure for an injection molding machine, including a support frame, a material storage barrel, a material conveying component, a fixing ring and fixing rods. Multiple fixing rods are fixedly connected to the support frame, and a fixing ring is fixedly connected to the multiple fixing rods together. A material storage barrel is installed on the fixing ring. A material conveying component for melting and conveying the injection molding raw materials to the injection mold is arranged inside the support frame. It further includes a mounting frame, a guiding frame, a support plate, a servo motor, a sprocket, a chain and a loading barrel. A mounting frame is installed on the side of the support frame, a guiding frame is installed on the mounting frame, a loading barrel is slidably arranged on the guiding frame, a support plate is installed on the mounting frame, sprockets are rotatably arranged on both the support plate and the guiding frame, a chain is wound around the two sprockets together, the chain is fixedly connected to the loading barrel, and a servo motor is installed on the support plate, and the output shaft of the servo motor is fixedly connected to the sprocket.

[0007] As a further preferred solution, the material conveying component includes an injection channel installed inside the support frame. The material storage barrel is opposite to the opening of the injection channel. A threaded conveying rod is rotatably arranged inside the injection channel. A support shell is installed on the side of the support frame, and a first motor is installed inside the support shell. The output shaft of the first motor is fixedly connected to the threaded conveying rod through a coupling. Multiple heaters are installed on the injection channel.

[0008] As a further preferred solution, the lower part of the guiding frame is inclined and the upper part is semi-circular arc-shaped.

[0009] As a further preferred solution, it further includes a fixing frame installed on the support frame. An installation shell is installed on the fixing frame. The installation shell is sleeved on the outer wall of the material storage barrel. A preheating pipe is wound around the material storage barrel. A controller is installed on the fixing frame. The preheating pipe penetrates the installation shell and is electrically connected to the controller.

[0010] As a further preferred solution, it further includes a fixing shell installed inside the material storage barrel. A second motor is installed on the fixing shell. A scraping frame is rotatably arranged inside the material storage barrel. The output shaft of the second motor is fixedly connected to the scraping frame.

[0011] As a further preferred solution, the upper part of the scraping frame is in the shape of a cylindrical frame and the lower part is in the shape of an inverted frustum frame.

[0012] As a further preferred solution, three staggered cross bars are arranged in the middle of the scraping frame.

[0013] As a further preferred solution, it further includes multiple limiting rods fixedly connected to the support frame. A defective gear is rotatably arranged on the multiple limiting rods together. Baffles are rotatably arranged on each fixing rod. A connecting plate is hingedly connected between each baffle and the defective gear. A spur gear is rotatably arranged on the support frame. The spur gear meshes with the defective gear. A stepping motor is installed on the support frame. The output shaft of the stepping motor is fixedly connected to the spur gear.

[0014] As a further preferred solution, a baffle is installed on the edge of the feeding bucket.

[0015] As a further preferred solution, a protective shell is installed on the support frame, and the protective shell covers the stepping motor, the spur gear and the missing gear together.

[0016] Compared with the prior art, the milling cutter provided by the embodiment of the present utility model has the following advantages: 1. By pouring raw materials into the loading bucket, then starting the servo motor to drive the sprocket to rotate on the support plate, driving the loading bucket to slide upward along the guide frame through the chain, and turning the loading bucket at the top of the guide frame, so that the raw materials in the loading bucket are poured into the feeding bucket, achieving the effect of facilitating the replenishment of the feeding bucket.

[0017] 2. By starting the controller to control the preheating pipe to heat, the preheating pipe transfers heat to the side wall of the feeding bucket to preheat the injection molding raw materials in the feeding bucket. The installation shell can avoid the heat loss of the preheating pipe, achieving the effect of preheating the injection molding raw materials.

[0018] 3. By starting the second motor to drive the scraping frame to rotate in the feeding bucket, so that the scraping frame scrapes off the injection molding raw materials adhered to the inner wall of the feeding bucket, and the raw materials smoothly fall into the injection molding channel, achieving the effect of preventing the preheated raw materials from melting and adhering to the inner wall of the feeding bucket.

[0019] 4. By starting the stepping motor to drive the spur gear to rotate forward and backward, at this time the spur gear drives the missing gear to mesh and rotate, and the missing gear pulls the baffle to rotate along the fixed rod through the connecting plate, so that each baffle is unfolded or closed, achieving the effect of controlling the feeding efficiency and opening / closing of the feeding bucket to the injection molding channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the present utility model.

[0021] Figure 2 It is a three-dimensional sectional structural schematic diagram of the injection molding channel, the first motor and the heater of the present utility model.

[0022] Figure 3 It is a three-dimensional structural schematic diagram of the support frame, the feeding bucket and the mounting frame of the present utility model.

[0023] Figure 4 It is a three-dimensional sectional structural schematic diagram of the servo motor, the sprocket and the chain of the present utility model.

[0024] Figure 5 It is a three-dimensional sectional structural schematic diagram of the controller, the installation shell and the preheating pipe of the present utility model.

[0025] Figure 6 It is a three-dimensional sectional structural schematic diagram of the support frame, the feeding bucket and the stepping motor of the present utility model.

[0026] Figure 7 This is a schematic three-dimensional sectional view of the fixed shell, the second motor and the scraping rack of the present utility model.

[0027] Figure 8 This is a schematic three-dimensional sectional view of the spur gear, the missing gear and the baffle of the present utility model.

[0028] Names and serial numbers of components in the figure: 1: Support frame, 2: Feeding bucket, 3: Injection channel, 4: Support shell, 401: First motor, 5: Screw conveyor, 501: Heater, 6: Baffle plate, 7: Mounting frame, 701: Guide frame, 8: Support plate, 9: Servo motor, 10: Sprocket, 11: Chain, 12: Loading bucket, 13: Fixed frame, 14: Controller, 15: Mounting shell, 16: Preheating pipe, 17: Fixed shell, 18: Second motor, 19: Scraping rack, 20: Stepper motor, 21: Spur gear, 22: Missing gear, 23: Limit rod, 24: Fixed ring, 25: Baffle, 26: Fixed rod, 27: Connecting plate, 28: Protective shell. Specific embodiments

[0029] The technical solution of the present utility model will be further described below with reference to the accompanying drawings.

[0030] Embodiment 1: A feeding structure of an injection molding machine, referring to Figures 1 - 4 As shown, it includes a support frame 1, a feeding bucket 2, a feeding component, a fixed ring 24 and a fixed rod 26. Three fixed rods 26 are fixedly connected to the top of the support frame 1 by welding. The upper parts of the three fixed rods 26 are fixedly connected together by welding to form a fixed ring 24. A feeding bucket 2 for discharging materials is installed on the top of the fixed ring 24 by welding. A feeding component for melting and transporting the injection molding raw materials to the injection mold is arranged in the support frame 1. It also includes a mounting frame 7, a guide frame 701, a support plate 8, a servo motor 9, a sprocket 10, a chain 11 and a loading bucket 12. A mounting frame 7 is installed on one side of the lower part of the support frame 1 by welding. A guide frame 701 is installed on the mounting frame 7 by bolt connection. A loading bucket 12 for feeding and replenishing materials is slidably arranged on the guide frame 701. The lower part of the guide frame 701 is inclined and the upper part is semi-circular, so as to transport the loading bucket 12 to the top of the feeding bucket 2 and turn it over to pour in the raw materials. A support plate 8 is installed on the mounting frame 7 by bolt connection. Sprockets 10 are rotatably arranged on both the support plate 8 and the guide frame 701. A chain 11 for transmission is wound around the two sprockets 10. The chain 11 is fixedly connected to the loading bucket 12 by riveting. A servo motor 9 is installed on the support plate 8 by bolt connection. The output shaft of the servo motor 9 is fixedly connected to the sprocket 10 by a key.

[0031] Referring to Figure 2As shown in the figure, the feeding assembly includes an injection molding channel 3 installed in the support frame 1 by means of bolt connection. The material discharging barrel 2 is facing the opening of the injection molding channel 3. A screw conveyor rod 5 is rotatably arranged in the injection molding channel 3. A support shell 4 is installed on the side of the support frame 1 by means of bolt connection. A first motor 401 is installed in the support shell 4 by means of bolt connection. The output shaft of the first motor 401 is fixedly connected to the screw conveyor rod 5 through a coupling. A plurality of heaters 501 for heating and melting plastic raw materials are installed on the injection molding channel 3 by means of bolt connection.

[0032] When injection molding is required, start the first motor 401 to drive the screw conveyor rod 5 to rotate, so that the screw conveyor rod 5 conveys the raw materials dropped from the material discharging barrel 2 into the injection molding channel 3. Start the heater 501 to heat the injection molding raw materials to form a hot melt adhesive state, and push them into the injection mold through the screw conveyor rod 5 for injection molding. When replenishing materials in the material discharging barrel 2, first pour the raw materials into the loading barrel 12, then start the servo motor 9 to drive the sprocket 10 to rotate on the support plate 8, drive the sprocket 10 on the guide frame 701 to rotate synchronously through the chain 11, drive the loading barrel 12 to slide upward along the guide frame 701 through the chain 11, and turn over the loading barrel 12 at the top of the guide frame 701, so that the raw materials in the loading barrel 12 are poured into the material discharging barrel 2 to replenish the material discharging barrel 2. Then drive the sprocket 10 to rotate in the reverse direction through the servo motor 9, so that the chain 11 drives the material discharging barrel 2 to slide downward along the guide frame 701 to reset.

[0033] Embodiment 2: On the basis of Embodiment 1, refer to Figure 3 and Figure 5 As shown in the figure, it further includes a fixing frame 13 installed on the top of the support frame 1 by means of bolt connection. An installation shell 15 is installed on the fixing frame 13 by means of bolt connection. The installation shell 15 is sleeved on the outer wall of the material discharging barrel 2 by welding. A preheating pipe 16 for preheating the injection molding raw materials is wound around the material discharging barrel 2. The preheating pipe 16 is arranged between the material discharging barrel 2 and the installation shell 15. A controller 14 is installed on the fixing frame 13 by means of bolt connection. The preheating pipe 16 penetrates the installation shell 15 and is electrically connected to the controller 14.

[0034] To make the injection molding raw materials heat and melt faster when entering the injection molding channel 3, after pouring the injection molding raw materials into the material discharging barrel 2, start the controller 14 to control the preheating pipe 16 to heat. The preheating pipe 16 transfers the heat to the side wall of the material discharging barrel 2 to preheat the injection molding raw materials in the material discharging barrel 2. The installation shell 15 can avoid the heat loss of the preheating pipe 16 and protect the preheating pipe 16 at the same time.

[0035] Refer to Figure 6 and Figure 7As shown in the figure, it further includes a fixed shell 17 installed at the upper part inside the discharging barrel 2 by means of bolt connection. A second motor 18 is installed on the fixed shell 17 by means of bolt connection. A scraping rack 19 for scraping the sticky injection molding raw materials is rotatably arranged inside the discharging barrel 2. The output shaft of the second motor 18 faces downward and is fixedly connected to the scraping rack 19. The upper part of the scraping rack 19 is in the shape of a cylindrical rack, and the lower part is in the shape of an inverted frustum rack, so that the scraping rack 19 fits the inner wall of the discharging barrel 2 to scrape off all the sticky raw materials. Three staggered cross bars are arranged in the middle of the scraping rack 19 to facilitate stirring the raw materials, fully preheat the raw materials, and avoid the phenomenon of raw material bridging during feeding.

[0036] When the injection molding raw materials in the discharging barrel 2 are being preheated, some raw materials may melt. To prevent the raw materials from sticking to the inner wall of the discharging barrel 2 and unable to be discharged, the second motor 18 is started to drive the scraping rack 19 to rotate inside the discharging barrel 2, so that the scraping rack 19 scrapes off the injection molding raw materials sticking to the inner wall of the discharging barrel 2, and the raw materials smoothly fall into the injection molding channel 3.

[0037] Refer to Figure 6 and Figure 8 As shown in the figure, it further includes three limit rods 23 fixedly connected to the top of the support frame 1 by means of welding. A missing gear 22 is rotatably arranged on the three limit rods 23. A baffle 25 for controlling the opening and closing of the discharging port of the discharging barrel 2 is rotatably arranged on each fixing rod 26. A connecting plate 27 is hingedly connected between each baffle 25 and the missing gear 22. A spur gear 21 is rotatably arranged on the support frame 1. The spur gear 21 meshes with the missing gear 22. A stepping motor 20 is installed on the top of the support frame 1 by means of bolt connection. The output shaft of the stepping motor 20 faces downward and is fixedly connected to the spur gear 21 by means of key connection.

[0038] When it is necessary to control the feeding efficiency of the raw materials in the discharging barrel 2, the stepping motor 20 is started to drive the spur gear 21 to rotate forward and backward. At this time, the spur gear 21 drives the missing gear 22 to mesh and rotate. The limit rod 23 can prevent the missing gear 22 from rotating excessively. The missing gear 22 pulls the baffle 25 to rotate along the fixing rod 26 through the connecting plate 27, so that each baffle 25 is unfolded or closed to control the feeding efficiency and opening and closing of the discharging barrel 2 to the injection molding channel 3.

[0039] Refer to Figure 1 and Figure 6 As shown in the figure, a baffle 6 is installed at the top edge of the discharging barrel 2 by means of bolt connection; a protective shell 28 is installed on the top of the support frame 1 by means of bolt connection. The protective shell 28 covers the stepping motor 20, the spur gear 21 and the missing gear 22 together.

[0040] The baffle plate 6 can prevent the injection molding raw materials from spilling out due to too fast feeding when the charging bucket 12 pours materials into the discharging bucket 2, and make the injection molding raw materials fall into the discharging bucket 2; the protective shell 28 can protect the stepping motor 20, and at the same time can prevent accidental falling between the spur gear 21 and the missing gear 22 and jamming them.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A feeding structure for an injection molding machine, comprising a support frame (1), a material storage barrel (2), a material conveying assembly, a fixing ring (24) and a fixing rod (26). A plurality of fixing rods (26) are fixedly connected to the support frame (1), and a fixing ring (24) is fixedly connected to the plurality of fixing rods (26) together. A material storage barrel (2) is installed on the fixing ring (24). A material conveying assembly for melting and conveying injection molding raw materials to an injection mold is arranged in the support frame (1), and is characterized in that, It further includes a mounting frame (7), a guiding frame (701), a support plate (8), a servo motor (9), a sprocket (10), a chain (11) and a charging bucket (12). A mounting frame (7) is installed on the side of the support frame (1). A guiding frame (701) is installed on the mounting frame (7). A charging bucket (12) is slidably arranged on the guiding frame (701). A support plate (8) is installed on the mounting frame (7). Sprockets (10) are rotatably arranged on both the support plate (8) and the guiding frame (701). A chain (11) is wound around the two sprockets (10) together. The chain (11) is fixedly connected to the charging bucket (12). A servo motor (9) is installed on the support plate (8). The output shaft of the servo motor (9) is fixedly connected to the sprocket (10).

2. The feeding structure of an injection molding machine according to claim 1, wherein, The feeding component includes an injection molding channel (3) installed in the support frame (1). The discharging bucket (2) faces the opening of the injection molding channel (3). A threaded conveying rod (5) is rotatably arranged in the injection molding channel (3). A support shell (4) is installed on the side of the support frame (1). A first motor (401) is installed in the support shell (4). The output shaft of the first motor (401) is fixedly connected to the threaded conveying rod (5) through a coupling. A plurality of heaters (501) are installed on the injection molding channel (3).

3. The feeding structure of an injection molding machine according to claim 2, characterized in that, The lower part of the guiding frame (701) is inclined, and the upper part is semi-circular arc-shaped.

4. A feeding structure of an injection molding machine according to claim 1, characterized in that, It further includes a fixing frame (13) installed on the support frame (1). An installation shell (15) is installed on the fixing frame (13). The installation shell (15) is sleeved on the outer wall of the discharging bucket (2). A preheating pipe (16) is wound around the discharging bucket (2). A controller (14) is installed on the fixing frame (13). The preheating pipe (16) penetrates the installation shell (15) and is electrically connected to the controller (14).

5. The feeding structure of an injection molding machine according to claim 1, wherein, It further includes a fixing shell (17) installed in the discharging bucket (2). A second motor (18) is installed on the fixing shell (17). A scraping frame (19) is rotatably arranged in the discharging bucket (2). The output shaft of the second motor (18) is fixedly connected to the scraping frame (19).

6. The feeding structure of an injection molding machine according to claim 5, characterized in that, The upper part of the scraping frame (19) is cylindrical frame-shaped, and the lower part is frustum-shaped.

7. The feeding structure of an injection molding machine according to claim 5, characterized in that, Three staggered cross bars are arranged in the middle of the scraping frame (19).

8. The feeding structure of an injection molding machine according to claim 1, characterized in that, It further includes a plurality of limiting rods (23) fixedly connected to the support frame (1). A defective gear (22) is rotatably arranged on the plurality of limiting rods (23) together. A baffle (25) is rotatably arranged on each fixing rod (26). A connecting plate (27) is hingedly connected between each baffle (25) and the defective gear (22) together. A spur gear (21) is rotatably arranged on the support frame (1). The spur gear (21) meshes with the defective gear (22). A stepping motor (20) is installed on the support frame (1). The output shaft of the stepping motor (20) is fixedly connected to the spur gear (21).

9. The feeding structure of an injection molding machine according to claim 1, characterized in that, A baffle plate (6) is installed on the edge of the discharging bucket (2).

10. The feeding structure of an injection molding machine according to claim 8, characterized in that, A protective shell (28) is installed on the support frame (1). The protective shell (28) covers the stepping motor (20), the spur gear (21) and the defective gear (22) together.

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