A new injection molding machine raw material centralized feeding device

Abstract

This utility model relates to a novel centralized raw material feeding device for injection molding machines, aiming to solve the technical problem that current injection molding machines require multiple negative pressure pumps to feed different raw materials (materials that need to be fed simultaneously or to avoid contamination), thus increasing the cost of raw material feeding. The device includes a feeding mechanism installed on the injection molding machine body. The feeding mechanism includes a feeding box connected to the feed inlet of the injection molding machine body. Multiple partitions are installed inside the feeding box, dividing the box into multiple feeding compartments. The tops of each feeding compartment are connected to a storage box. A feeding roller is rotatably connected between adjacent partitions via a rotating shaft. This utility model eliminates the need for multiple negative pressure pumps when feeding different raw materials (materials that need to be fed simultaneously or to avoid contamination), further reducing the cost of raw material feeding for injection molding machines.

Description

Technical Field

[0001] This utility model relates to the field of raw material supply for injection molding machines, specifically a novel centralized raw material supply device for injection molding machines. Background Technology

[0002] Injection molding machines, also known as injection molding machines or injection molding machines, utilize the thermophysical properties of plastics to plasticize, melt, and homogenize materials before injecting them into the cavity of a mold. The molten material is then held under pressure, cooled, and solidified in the cavity to form a finished product. With the advancement of science and technology and industrial production, especially with the rapid development of industries such as automobiles and home appliances, the application of injection molding machines has become increasingly widespread. Injection molding machines require certain material feeding techniques to function effectively in production.

[0003] Traditional injection molding machines require multiple negative pressure pumps to supply different raw materials (those that need to be fed simultaneously or to avoid contamination), thus increasing the cost of raw material supply. Therefore, a new technical solution is needed to address this issue. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology, adapt to the needs of reality, and provide a new type of centralized raw material feeding device for injection molding machines. This device solves the technical problem that when current injection molding machines feed multiple different raw materials (raw materials that need to be fed simultaneously or to avoid contamination), multiple negative pressure pumps are required to feed different raw materials, thereby increasing the cost of raw material feeding for injection molding machines.

[0005] To achieve the purpose of this utility model, the technical solution adopted by this utility model is as follows: A novel centralized raw material feeding device for injection molding machines is designed, comprising a feeding mechanism installed on the injection molding machine body. The feeding mechanism includes a feeding box connected to the feed inlet of the injection molding machine body. Multiple partitions are installed inside the feeding box, dividing the feeding box into multiple feeding compartments. The tops of each feeding compartment are connected to a storage box. A feeding roller is rotatably connected between two adjacent partitions via a rotating shaft. The outer side of the feeding roller movably abuts against the partitions and the feeding box. Two storage troughs are provided on the feeding roller. A linkage mechanism is provided between the rotating shafts of two adjacent feeding rollers. A first drive motor is installed at one end of the outer side of the feeding box. The drive end of the first drive motor rotates through the feeding box and is connected to the rotating shaft on one side of the feeding roller via a coupling.

[0006] Preferably, the linkage mechanism includes a connecting groove formed on the partition plate, and the rotating shafts on two adjacent feeding rollers are rotatably inserted into the connecting groove. A first gear and a drive disk are respectively installed on the two rotating shafts in the connecting groove. The center of the first gear and the center of the drive disk are on the same horizontal line. A second gear is installed on the drive disk. The first gear and the second gear mesh. The first gear and the second gear have the same specifications.

[0007] Preferably, the drive disc has adjustment grooves on both sides near the end of the first gear, and adjustment blocks are slidably connected in both adjustment grooves. The second gear is fixedly connected to one of the adjustment blocks, and a third gear is installed on the other adjustment block. The transmission ratio between the first gear and the third gear is 1:2. Lead screws are rotatably connected in both adjustment grooves, and the two adjustment blocks are threaded onto the outside of the two lead screws respectively.

[0008] Preferably, a support plate is installed in the feeding box below the feeding roller. Guide plates are inclinedly connected between the two sides of the support plate and the inner wall of the feeding box, and the two guide plates are V-shaped with the support plate. A discharge hole is opened in the middle of the support plate. A drive shaft is rotatably connected between the two sides of the inner cavity of the feeding box. Spiral blades are installed on both sides of the outer side of the drive shaft, and the threads of the two spiral blades are opposite. A second drive motor is installed at the drive end of the feeding box away from the first drive motor. The drive end of the second drive motor rotatably passes through the feeding box and is connected to the drive shaft through a coupling. A mixing frame is installed in the middle of the bottom end of the support plate. A connecting shaft is rotatably connected between the two sides of the inner cavity of the mixing frame. Multiple stirring plates are installed on the outer side of the connecting shaft. A transmission mechanism is provided between the same end of the connecting shaft and the drive shaft.

[0009] Preferably, the transmission mechanism includes a first sprocket and a second sprocket, and the same end of the drive shaft and the connecting shaft are rotatably placed outside the feeding box. The first sprocket and the second sprocket are respectively mounted on the drive shaft and the connecting shaft outside the feeding box, and a chain meshes between the first sprocket and the second sprocket.

[0010] Preferably, a protective cover is provided at one end of the feeding box near the first sprocket and the second sprocket, and the protective cover is bolted to the outside of the feeding box.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. This utility model combines a partition, a linkage mechanism, feeding rollers, a storage tank, a first drive motor, and a feeding box to sequentially place various materials into the storage tank. Then, by starting the first drive motor and coordinating with the linkage mechanism, multiple feeding rollers rotate simultaneously. When the storage tank rotates to the point where its opening faces upward, the material in the storage tank is placed in the storage tank. When the opening of the storage tank rotates to the point where its opening faces downward, the material in the storage tank automatically falls to the feed inlet of the injection molding machine body due to gravity and enters the injection molding machine body for injection molding. Therefore, when feeding multiple different raw materials (raw materials that need to be fed simultaneously or to avoid contamination), there is no need for multiple negative pressure pumps to feed different raw materials, further reducing the cost of raw material supply for injection molding machines.

[0013] 2. This utility model combines a first gear, a second gear, an adjusting groove, an adjusting block, a lead screw, a third gear, a drive disc, and a rotating shaft. By turning the first lead screw, the second gear meshes with the first gear, thereby enabling the first drive motor to simultaneously drive multiple feeding rollers to rotate synchronously. This allows for the synchronous and equal addition of multiple different types of materials. When it is necessary to add different materials in a 1:2 ratio, turning the first lead screw causes the second gear to disengage from the first gear, and then turning another lead screw causes the third gear to mesh with the first gear. Since the transmission ratio between the first and third gears is 1:2, the rotation speeds of the different feeding rollers are 1:2, thus facilitating the addition of different materials in a 1:2 ratio. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic cross-sectional view of the internal structure of the feeding box of this utility model;

[0016] Figure 3 This is a schematic diagram of the linkage mechanism structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the mixing frame structure of this utility model.

[0018] In the diagram: 1. Injection molding machine body; 2. Feeding box; 21. Storage box; 22. Partition; 23. Feeding roller; 24. Storage trough; 25. Connecting groove; 3. First drive motor; 4. Protective cover; 5. Second drive motor; 51. Guide plate; 52. Drive shaft; 53. Spiral blade; 54. Discharge hole; 6. Linkage mechanism; 61. Rotating shaft; 62. First gear; 63. Drive disc; 64. Adjusting groove; 65. Lead screw; 66. Adjusting block; 67. Third gear; 68. Second gear; 7. Mixing frame; 71. Connecting shaft; 72. Mixing plate; 8. First sprocket; 81. Second sprocket; 82. Chain. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0020] Example 1: A novel centralized raw material feeding device for injection molding machines, see [link to example]. Figures 1 to 4 The system includes a feeding mechanism mounted on the injection molding machine body 1. The feeding mechanism includes a feeding box 2 connected to the inlet of the injection molding machine body 1. The inner cavity of the feeding box 2 is equipped with multiple partitions 22, which divide the feeding box 2 into multiple feeding compartments. The top of each of the multiple feeding compartments is connected to a storage box 21. A feeding roller 23 is rotatably connected between two adjacent partitions 22 via a rotating shaft 61. The outer side of the feeding roller 23 moves against the partitions 22 and the feeding box 2. Two storage slots 24 are provided on the feeding roller 23. A linkage mechanism 6 is provided between the rotating shafts 61 of two adjacent feeding rollers 23. A first drive motor 3 is mounted on one side of the feeding box 2. The drive end of the first drive motor 3 rotates through the feeding box 2 and is connected to the rotating shaft 61 on one side of the feeding roller 23 via a coupling.

[0021] During operation, various materials to be added are sequentially placed into the storage bin 21. Then, the first drive motor 3, in conjunction with the linkage mechanism 6, drives multiple feeding rollers 23 to rotate simultaneously. When the storage trough 24 rotates to the point where its opening faces upward, the material in the storage bin 21 is placed in the storage trough 24. When the opening of the storage trough 24 rotates to the point where its opening faces downward, the material in the storage trough 24 automatically falls to the feed inlet of the injection molding machine body 1 due to gravity. Then, the material enters the heating cylinder through the hopper. Under the shear heat generated by the screw rotation and the external heating effect, it gradually melts into a viscous flow state. Finally, the mold closes through the hydraulic system, forming a sealed cavity. To prevent molten material from overflowing during injection, the molten plastic is injected at high speed into the closed mold cavity through the nozzle under the high pressure of the screw or piston, completing the filling. After injection, a certain pressure is maintained to compensate for material shrinkage and ensure that the plastic in the cavity is dense, reducing molding defects. Then, the mold solidifies the plastic through a cooling system (such as a water channel). Finally, after the mold opens, the ejector mechanism pushes the molded product out of the cavity, completing the injection molding. Furthermore, when feeding multiple different raw materials (raw materials that need to be fed simultaneously or to avoid contamination), there is no need for multiple negative pressure pumps to feed different raw materials, further reducing the cost of raw material supply for injection molding machines.

[0022] For details, see Figure 2 and Figure 3The linkage mechanism 6 includes a connecting groove 25 formed on the partition plate 22. The rotating shafts 61 on two adjacent feeding rollers 23 are rotatably inserted into the connecting groove 25. A first gear 62 and a drive disk 63 are respectively mounted on the two rotating shafts 61 within the connecting groove 25. The centers of the first gear 62 and the drive disk 63 are on the same horizontal line. A second gear 68 is mounted on the drive disk 63, and the first gear 62 and the second gear 68 mesh. The first gear 62 and the second gear 68 have the same specifications. Adjusting grooves 64 are formed on both sides of the drive disk 63 near the end of the first gear 62. Adjusting blocks 66 are slidably connected in both adjusting grooves 64. The second gear 68 is fixedly connected to one of the adjusting blocks 66, and a third gear 67 is mounted on the other adjusting block 66. The transmission between the first gear 62 and the third gear 67... The ratio is 1:2. Both adjustment slots 64 are rotatably connected to lead screws 65, and the two adjustment blocks 66 are threaded onto the outside of the two lead screws 65. By turning the first lead screw 65, the second gear 68 is driven to mesh with the first gear 62, so that the first drive motor 3 can drive multiple feeding rollers 23 to rotate synchronously. This allows for the synchronous and equal addition of multiple different types of materials. When it is necessary to add different materials in a 1:2 ratio, the first lead screw 65 is turned to disengage the second gear 68 from the first gear 62, and then the other lead screw 65 is turned to drive the third gear 67 to mesh with the first gear 62. Since the transmission ratio between the first gear 62 and the third gear 67 is 1:2, the rotation speeds of the different feeding rollers 23 are 1:2, which facilitates the addition of different materials in a 1:2 ratio.

[0023] Further, see Figure 2 and Figure 4A support plate is installed inside the feeding box 2 below the feeding roller 23. Guide plates 51 are inclinedly connected to both sides of the support plate and the inner wall of the feeding box 2, and the two guide plates 51 are V-shaped with the support plate. A discharge hole 54 is opened in the middle of the support plate. A drive shaft 52 is rotatably connected between the two sides of the inner cavity of the feeding box 2. Spiral blades 53 are installed on both sides of the outer side of the drive shaft 52, and the threads of the two spiral blades 53 are opposite. A second drive motor 5 is installed at the drive end of the feeding box 2 away from the first drive motor 3. The drive end of the second drive motor 5 rotatably passes through the feeding box 2 and is connected to the drive shaft 52 via a coupling. A mixing frame 7 is installed in the middle of the bottom end of the support plate. A connecting shaft 71 is rotatably connected between the two sides of the inner cavity of the mixing frame 7. Multiple stirring plates 72 are installed on the outer side of the connecting shaft 71. A transmission is provided between the same end of the connecting shaft 71 and the drive shaft 52. The transmission mechanism includes a first sprocket 8 and a second sprocket 81. The same end of the drive shaft 52 and the connecting shaft 71 are rotatably placed on the outside of the feeding box 2. The first sprocket 8 and the second sprocket 81 are respectively mounted on the drive shaft 52 and the connecting shaft 71 on the outside of the feeding box 2. A chain 82 meshes between the first sprocket 8 and the second sprocket 81. When feeding material, the second drive motor 5 is started to drive the drive shaft 52 to rotate, thereby cooperating with the spiral blade 53 to transport the material to the discharge hole 54. Thus, the material on both sides is initially mixed when the material is transported. When the material is placed in the discharge frame through the discharge hole 54, the drive shaft 52 rotates, which, together with the first sprocket 8, the second sprocket 81 and the chain 82, drives the connecting shaft 71 to rotate, thereby driving the stirring plate 72 to rotate. Thus, the stirring plate 72 rotates to re-stir and mix the discharged material before adding it into the injection molding machine body 1, thereby improving the injection molding quality.

[0024] It is worth noting that, see Figure 1 The feeding box 2 is provided with a protective cover 4 at one end near the first sprocket 8 and the second sprocket 81. The protective cover 4 is bolted to the outside of the feeding box 2. The protective cover 4 can protect the transmission mechanism and prevent personnel from being pinched by the rotation of the transmission mechanism, thereby improving safety.

[0025] In addition, all components designed in this utility model are general standard parts or components known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods. Those skilled in the art can fully implement them, so there is no need to elaborate. The content protected by this utility model does not involve improvements to the internal structure and method.

[0026] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. A novel centralized raw material feeding device for injection molding machines, comprising a feeding mechanism disposed on the injection molding machine body (1), characterized in that, The feeding mechanism includes a feeding box (2) connected to the feed inlet of the injection molding machine body (1). The inner cavity of the feeding box (2) is equipped with multiple partitions (22). The multiple partitions (22) divide the feeding box (2) into multiple feeding chambers. The top of each of the multiple feeding chambers is connected to a storage box (21). A feeding roller (23) is rotatably connected between two adjacent partitions (22) through a rotating shaft (61). The outer side of the feeding roller (23) moves against the partitions (22) and the feeding box (2). Two storage troughs (24) are opened on the feeding roller (23). A linkage mechanism (6) is provided between the rotating shafts (61) of two adjacent feeding rollers (23). A first drive motor (3) is installed at one end of the outer side of the feeding box (2). The drive end of the first drive motor (3) rotates through the feeding box (2) and is connected to the rotating shaft (61) on one side of the feeding roller (23) through a coupling.

2. The novel centralized raw material feeding device for injection molding machines as described in claim 1, characterized in that, The linkage mechanism (6) includes a connecting groove (25) opened on the partition plate (22). The rotating shafts (61) on the two adjacent feeding rollers (23) are rotatably inserted into the connecting groove (25). A first gear (62) and a drive disk (63) are respectively installed on the two rotating shafts (61) in the connecting groove (25). The center of the first gear (62) and the drive disk (63) are on the same horizontal line. A second gear (68) is installed on the drive disk (63). The first gear (62) and the second gear (68) mesh. The first gear (62) and the second gear (68) have the same specifications.

3. The novel centralized raw material feeding device for injection molding machines as described in claim 2, characterized in that, The drive disc (63) has adjustment grooves (64) on both sides near the end of the first gear (62). Adjustment blocks (66) are slidably connected in both adjustment grooves (64). The second gear (68) is fixedly connected to one of the adjustment blocks (66). A third gear (67) is installed on the other adjustment block (66). The transmission ratio between the first gear (62) and the third gear (67) is 1:

2. Lead screws (65) are rotatably connected in both adjustment grooves (64). The two adjustment blocks (66) are threaded onto the outside of the two lead screws (65).

4. A novel centralized raw material feeding device for injection molding machines as described in claim 1, characterized in that, A support plate is installed in the feeding box (2) below the feeding roller (23). Guide plates (51) are inclinedly connected between the two sides of the support plate and the inner wall of the feeding box (2), and the two guide plates (51) are V-shaped with the support plate. A discharge hole (54) is opened in the middle of the support plate. A drive shaft (52) is rotatably connected between the two sides of the inner cavity of the feeding box (2). Spiral blades (53) are installed on both sides of the outer side of the drive shaft (52), and the threads of the two spiral blades (53) are opposite. A second drive motor (5) is installed at the drive end of the material box (2) away from the first drive motor (3). The drive end of the second drive motor (5) rotates through the material box (2) and is connected to the drive shaft (52) through a coupling. A mixing frame (7) is installed at the middle of the bottom end of the support plate. A connecting shaft (71) is rotatably connected between the two sides of the inner cavity of the mixing frame (7). Multiple stirring plates (72) are installed on the outside of the connecting shaft (71). A transmission mechanism is provided between the same end of the connecting shaft (71) and the drive shaft (52).

5. A novel centralized raw material feeding device for injection molding machines as described in claim 4, characterized in that, The transmission mechanism includes a first sprocket (8) and a second sprocket (81). The same end of the drive shaft (52) and the connecting shaft (71) are rotatably placed on the outside of the feeding box (2). The first sprocket (8) and the second sprocket (81) are respectively mounted on the drive shaft (52) and the connecting shaft (71) on the outside of the feeding box (2). A chain (82) meshes between the first sprocket (8) and the second sprocket (81).

6. A novel centralized raw material feeding device for injection molding machines as described in claim 5, characterized in that, The feeding box (2) is provided with a protective cover (4) at one end near the first sprocket (8) and the second sprocket (81), and the protective cover (4) is connected to the outside of the feeding box (2) by bolts.

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