Feeding mechanism of injection molding machine

Abstract

The utility model relates to the technical field of injection molding machines, in particular to an injection molding machine feeding mechanism which comprises a device plate, a swing rod is connected to the device plate through a connecting rod, a sector gear is fixedly installed at one end of the swing rod, the sector gear is connected with a worm in a meshed mode, auxiliary rods are fixedly installed at the two ends of the worm, and the auxiliary rods are connected with the device plate. The auxiliary rods are connected with the device plate through connecting blocks, a feeding hopper is arranged on one side of one auxiliary rod, and a heating pipe is fixedly installed at the lower end of the feeding hopper. A worker pours small plastic balls into the feeding hopper, a driving device is started, a rotating rod, a disc and a connecting rod are driven to rotate together, when the connecting rod slides in a sliding groove, a swing rod is driven to swing, then a sector gear, a worm and an auxiliary rod are driven to move, and therefore the auxiliary rod close to one end of the feeding hopper can impact the feeding hopper; and then the small plastic balls adhered to the inner wall of the feeding hopper fall into the heating pipe to be heated and melted under the impact of the auxiliary rod.

Description

Technical Field

[0001] This utility model relates to a feeding mechanism for an injection molding machine, and more particularly to a feeding mechanism for an injection molding machine, belonging to the field of injection molding machine technology. Background Technology

[0002] Injection molding machines, also known as injection molding machines or injection machines, are the main molding equipment for making various shapes of plastic products from thermoplastic or thermosetting plastics using plastic molds. They are divided into vertical, horizontal, and all-electric types. Injection molding machines can heat plastics and apply high pressure to molten plastics, causing them to be injected and fill the mold cavity.

[0003] Currently, most injection molding machines on the market use a hopper to feed plastic granules into a heating element for melting and heating. However, in a humid environment, these plastic granules may clump together, causing them to stick to the inner wall of the hopper, which will undoubtedly reduce the feeding speed.

[0004] Therefore, there is an urgent need to improve the feeding mechanism of an injection molding machine to solve the above-mentioned problems. Utility Model Content

[0005] The purpose of this invention is to provide a feeding mechanism for an injection molding machine that allows plastic particles in the feed hopper to slide smoothly into the heating tube.

[0006] To achieve the above objectives, the main technical solution adopted by this utility model includes: a feeding mechanism for an injection molding machine, comprising a device plate, a swing rod connected to the device plate via a connecting rod, a sector gear fixedly installed at one end of the swing rod, a worm gear meshing with the sector gear, auxiliary rods fixedly installed at both ends of the worm gear, the auxiliary rods being connected to the device plate via connecting blocks, and a feeding hopper provided on one side of one of the auxiliary rods, with a heating tube fixedly installed at the lower end of the feeding hopper.

[0007] Preferably, the connecting rod is fixedly connected to the device plate, and the connecting rod is rotatably connected to the lower half of the swing rod.

[0008] Preferably, the auxiliary rod is slidably connected to the connecting block, and a plurality of heating rings are fixedly installed on the heating tube.

[0009] Preferably, a driving device is fixedly installed on one side of the device plate, and a rotating rod that is rotatably connected to the device plate is fixedly installed at the output end of the driving device. A disc is fixedly installed at the end of the rotating rod near the swing rod.

[0010] Preferably, a connecting rod is fixedly installed at an eccentric position on the disk, and a sliding groove is provided on the upper half of the swing rod, with the connecting rod slidably connected to the sliding groove.

[0011] Preferably, a buffer sleeve is provided between the feed hopper and the heating tube, and the buffer sleeve is fitted at the connection between the feed hopper and the heating tube.

[0012] Preferably, the material of the cushioning sleeve is EVA foam.

[0013] This utility model has at least the following beneficial effects:

[0014] 1. The worker pours small plastic balls into the feeding hopper, turns on the drive device, and drives the rotating rod, disc and connecting rod to rotate together. When the connecting rod slides in the chute, it drives the swing rod to swing, which in turn drives the sector gear, worm gear and auxiliary rod to move. The auxiliary rod near the feeding hopper can then hit the feeding hopper, causing the small plastic balls stuck to the inner wall of the feeding hopper to fall into the heating tube under the impact of the auxiliary rod and be heated and melted, thus ensuring the feeding speed.

[0015] 2. By setting a buffer sleeve between the feed hopper and the heating tube, the buffer sleeve can absorb part of the impact force. The material of the buffer sleeve is EVA foam, which is the most common energy-absorbing buffer material. EVA foam is also known as polyethylene acetate. It has various densities and formulations to choose from. This material is relatively soft and can be easily compressed or twisted to increase the absorption of impact energy. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0017] Figure 1 This is a three-dimensional structural diagram of a feeding mechanism for an injection molding machine according to an embodiment of the present utility model;

[0018] Figure 2 This is a schematic diagram of the back of the overall structure of a feeding mechanism for an injection molding machine according to an embodiment of this utility model;

[0019] Figure 3 This is a schematic diagram of the connection structure between the feeding hopper and the heating pipe of an injection molding machine feeding mechanism in an embodiment of this utility model;

[0020] Figure 4 This invention relates to a feeding mechanism for an injection molding machine. Figure 1 An enlarged schematic diagram of the structure at point A.

[0021] In the diagram, 1. heating tube; 2. heating ring; 3. feed hopper; 4. buffer sleeve; 5. device plate; 6. disc; 7. rotating rod; 8. connecting rod; 9. swing rod; 10. slide groove; 11. connecting rod; 12. sector gear; 13. connecting block; 14. auxiliary rod; 15. worm gear; 16. drive device. Detailed Implementation

[0022] The following will describe in detail the implementation of this application with reference to the accompanying drawings and embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0023] Examples, such as Figures 1-4 As shown, an injection molding machine feeding mechanism includes a device plate 5. A swing rod 9 is connected to the device plate 5 via a connecting rod 11. A sector gear 12 is fixedly installed at one end of the swing rod 9. The sector gear 12 is meshed with a worm gear 15. Auxiliary rods 14 are fixedly installed at both ends of the worm gear 15. The auxiliary rods 14 are connected to the device plate 5 via a connecting block 13. A feeding hopper 3 is provided on one side of one of the auxiliary rods 14. A heating tube 1 is fixedly installed at the lower end of the feeding hopper 3. When the swing rod 9 swings, it drives the sector gear 12 fixedly installed at the lower end of the swing rod 9 to rotate. At the same time, the sector gear 12 meshes with the worm gear 15, so that when the sector gear 12 moves, it drives the worm gear 15 to move laterally.

[0024] Both ends of the worm gear 15 are fixedly installed with auxiliary rods 14, which in turn drive the auxiliary rods 14 to slide within the connecting block 13. Then, the auxiliary rod 14 near the feed hopper 3 is driven by the worm gear 15 to strike the auxiliary rod 14, causing the small plastic balls adhering to the inner wall of the feed hopper 3 to fall into the heating tube 1 for heating and melting under the impact of the auxiliary rod 14, thereby ensuring the feeding speed.

[0025] It should be noted that the tooth profile of the sector gear 12 can be regarded as the tooth profile of the turbine gear that meshes with the worm gear 15 in the prior art, and the correct meshing condition between the sector gear 12 and the worm gear 15 is that the axial module mx and axial pressure angle ax of the worm gear 15 are equal to the end module mt and end pressure angle at of the sector gear 12, and the helix directions of the two must be the same.

[0026] like Figures 1-4 As shown, the connecting rod 11 is fixedly connected to the device plate 5, the connecting rod 11 is rotatably connected to the lower half of the swing rod 9, the auxiliary rod 14 is slidably connected to the connecting block 13, and several heating rings 2 are fixedly installed on the heating tube 1. By setting the connecting rod 11 to be rotatably connected to the lower half of the swing rod 9, the swing rod 9 can swing stably without shaking during the swing. By fixing the heating rings 2 on the heating tube 1, the plastic balls inside the heating tube 1 can be heated and melted.

[0027] like Figures 1-2 As shown, further, a drive device 16 is fixedly installed on one side of the device plate 5. A rotating rod 7, which is rotatably connected to the device plate 5, is fixedly installed at the output end of the drive device 16. A disc 6 is fixedly installed at one end of the rotating rod 7 near the swing rod 9. A connecting rod 8 is fixedly installed at an eccentric position on the disc 6. A sliding groove 10 is provided on the upper half of the swing rod 9. The connecting rod 8 is slidably connected to the sliding groove 10. When the operator turns on the switch of the drive device 16, it drives the rotating rod 7, which is fixedly connected to the output end of the drive device 16, to rotate, thereby driving the other end of the rotating rod 7 to rotate. The fixed disk 6 rotates, and a connecting rod 8 is fixedly installed at the eccentric position of the disk 6. When the disk 6 rotates, it drives the connecting rod 8 to rotate as well. The connecting rod 8 is slidably connected to the sliding groove 10 opened on the swing rod 9, and the swing rod 9 is rotatably connected to the connecting rod 11. When the connecting rod 8 slides in the sliding groove 10, it drives the swing rod 9 to swing, which in turn drives the sector gear 12, worm gear 15 and auxiliary rod 14 to move. As a result, the auxiliary rod 14 near the end of the feed hopper 3 can hit the feed hopper 3.

[0028] like Figures 1-2 As shown, further, a buffer sleeve 4 is provided between the feed hopper 3 and the heating tube 1. The buffer sleeve 4 is fitted at the connection between the feed hopper 3 and the heating tube 1. The material of the buffer sleeve 4 is EVA foam. By providing the buffer sleeve 4 between the feed hopper 3 and the heating tube 1, the buffer sleeve 4 can absorb part of the impact force. The material of the buffer sleeve 4 is EVA foam, which is the most common energy-absorbing buffer material. Its full name is polyethylene acetate. Various densities and formulas can be selected. This material is relatively soft and can be easily compressed or twisted to increase the absorption of impact energy.

[0029] In this embodiment, as Figures 1-4 As shown in the figure, the principle of the injection molding machine feeding mechanism provided in this embodiment is as follows:

[0030] The worker pours small plastic balls into the feed hopper 3, turns on the drive device 16, and drives the rotating rod 7, which is fixedly connected to the output end of the drive device 16, to rotate. This, in turn, drives the disc 6, which is fixedly installed at the other end of the rotating rod 7, to rotate. At the same time, a connecting rod 8 is fixedly installed at the eccentric position of the disc 6. When the disc 6 rotates, it drives the connecting rod 8 to rotate as well. The connecting rod 8 is slidably connected to the sliding groove 10 on the swing rod 9, and the swing rod 9 is rotatably connected to the connecting rod 11. When the connecting rod 8 slides in the sliding groove 10, it drives the swing rod 9 to swing. This, in turn, drives the sector gear 12, the worm gear 15, and the auxiliary rod 14 to move. As a result, the auxiliary rod 14, which is close to one end of the feed hopper 3, can hit the feed hopper 3. This causes the small plastic balls that are stuck to the inner wall of the feed hopper 3 to fall into the heating tube 1 under the impact of the auxiliary rod 14 and melt, thus ensuring the feeding speed.

[0031] If certain terms are used in the specification and claims to refer to specific components, those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" as used throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to." "Approximately" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error.

[0032] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes that element.

[0033] The foregoing description illustrates and describes several preferred embodiments of the present invention. However, as previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. An injection molding machine feeding mechanism comprising a device plate (5), characterized in that: The device plate (5) is connected with a swing rod (9) through a connecting rod (11), one end of the swing rod (9) is fixedly provided with a sector gear (12), the sector gear (12) is connected with a worm (15) in meshing mode, both ends of the worm (15) are fixedly provided with auxiliary rods (14), the auxiliary rods (14) are connected with the device plate (5) through connecting blocks (13), one side of one of the auxiliary rods (14) is provided with a feeding hopper (3), the lower end of the feeding hopper (3) is fixedly provided with a heating pipe (1).

2. An injection molding machine feed mechanism according to claim 1 wherein: The connecting rod (11) is fixedly connected with the device plate (5), and the connecting rod (11) is rotatably connected with the lower half of the swing rod (9).

3. An injection molding machine feed mechanism as in claim 1, wherein: The auxiliary rod (14) is slidably connected with the connecting block (13), and a plurality of heating rings (2) are fixedly installed on the heating pipe (1).

4. An injection molding machine feed mechanism as in claim 3, wherein: One side of the device plate (5) is fixedly provided with a driving device (16), the output end of the driving device (16) is fixedly provided with a rotating rod (7) rotatably connected with the device plate (5), one end of the rotating rod (7) close to the swing rod (9) is fixedly provided with a disc (6).

5. An injection molding machine feed mechanism as in claim 4, wherein: The disc (6) is fixedly provided with a connecting rod (8) at an eccentric position, and the upper half of the swing rod (9) is provided with a sliding groove (10), and the connecting rod (8) is slidably connected with the sliding groove (10).

6. An injection molding machine feed mechanism as described in claim 1 wherein: A buffer sleeve (4) is arranged between the feeding hopper (3) and the heating pipe (1), and the buffer sleeve (4) is sleeved at the connecting position of the feeding hopper (3) and the heating pipe (1).

7. An injection molding machine feed mechanism as in claim 6, wherein: The material of the buffer sleeve (4) is EVA foaming glue.

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