Injection molding machine convenient to demould

Abstract

The injection molding machine comprises a base, an injection machine is fixedly mounted on the upper surface of the base, an injection head is mounted at one end of the injection machine, a mounting plate is fixedly arranged on the upper surface of one end of the base, and a forming hydraulic rod is fixedly mounted on the side surface of the mounting plate; a forming hydraulic rod is arranged on the base, a forming seat is fixedly mounted at one end of the forming hydraulic rod, a forming cavity is formed in the side surface of the forming seat, a discharging opening is formed in one end of the base, guide plates are fixedly arranged on the two sides of the discharging opening, and a demolding mechanism is arranged above the base and used for demolding after workpieces are formed and preventing the workpieces from being adhered. According to the injection molding machine convenient to demould, the demoulding mechanism is arranged above the base, so that a product can be separated from the mould core under the contact of the extending demoulding wheel after being formed, the product can be smoothly taken down from the mould core, the problem of ejector pin marks is avoided, and the forming quality of the outer surface of the product is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic container injection molding machines, in particular to an injection molding machine with convenient demoulding. Background Art

[0002] Injection molding is a common plastic processing method. It uses an injection molding machine to inject molten plastic material into a mold, and obtains the desired plastic product after cooling and solidification. The injection molding process is widely used in various fields, including home appliances, automobiles, medical treatment, electronics, etc., and is favored for its high production efficiency, low cost, and high product precision. However, since the surface of the plastic container is not a smooth and flat surface, demolding difficulties are often encountered during the injection molding process of the plastic container, which has a great impact on the quality of the plastic container injection molded products. It may cause scratches on the surface of the plastic container product, and may even cause the plastic container product to warp or even break and damage. Therefore, it is necessary to solve the demolding problem. The demolding problem affects the quality of the injection molded product. Usually, the ejector is used to eject the product after molding, but this will cause the outer surface of the product to have marks produced by the ejector during injection molding, affecting the molding quality of the product surface. Utility Model Content

[0003] The utility model aims to provide an injection molding machine with convenient demoulding, so as to solve the problem of poor demoulding method proposed in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an injection molding machine that is convenient for demolding, comprising a base, an injection machine is fixedly installed on the upper surface of the base, and an injection head is installed on one end of the injection machine, a mounting plate is fixedly arranged on the upper surface of one end of the base, a molding hydraulic rod is fixedly installed on the side surface of the mounting plate, and a molding seat is fixedly installed on one end of the molding hydraulic rod, and a molding cavity is provided on the side surface of the molding seat, a blanking port is provided at one end of the base, and guide plates are fixedly arranged on both sides of the blanking port, and a demolding mechanism is arranged above the base for demolding the workpiece after molding and preventing the workpiece from sticking.

[0005] Preferably, the demolding mechanism includes: a demolding hydraulic rod, which is fixedly mounted on the side surface of the mounting plate, and a mold plate is fixedly mounted on one end of the demolding hydraulic rod, and a mold core is fixedly arranged on the outer surface of the mold plate, a product is arranged between the mold core and the molding cavity, a sliding slide frame is installed inside the side surface of the molding seat, and a demolding wheel is fixedly arranged on one end of the slide frame, a rotating guide wheel is installed inside the molding seat, and a sliding displacement plate is installed inside the molding seat, and one end of a connecting chain is fixedly arranged on the outer surface of the displacement plate, and the other end of the connecting chain bypasses the outer surface of the guide wheel and is fixedly connected to the sliding frame, a ejector is fixedly arranged on the side surface of the mounting plate, and a hole is provided on the outer surface of the molding seat opposite to the ejector.

[0006] The above technical solution enables the product to be removed smoothly and the quality of the product surface is guaranteed.

[0007] Preferably, one end of the molding seat is mounted in engagement with the injection head, and a discharge hole is provided at the end of the molding seat that is engaged with the injection head.

[0008] By adopting the above technical solution, the injection head can inject the material into the molding seat and inject it into the molding cavity through the discharge hole of the molding seat.

[0009] Preferably, the sliding frame is designed to be inclined toward the injection head, and a spring is connected between the sliding frame and the molding seat.

[0010] By adopting the above technical solution, the sliding frame can slide out of the forming seat downward to clamp the product under the support of the spring.

[0011] Preferably, a material receiving mechanism is provided below the base to receive the material and prevent the material from piling up and being unable to be discharged.

[0012] By adopting the above technical solution, the product can fall downward and be cushioned.

[0013] Preferably, the material receiving mechanism comprises: a discharging cylinder, the discharging cylinder is fixedly installed just below the material drop port, a gear rod is fixedly provided on the side surface of the forming seat, a swivel is installed on the upper end of the discharging cylinder, and a toggle rod is fixedly provided on the inner surface of the swivel.

[0014] By adopting the above technical solution, the gear rod can be driven to move when the forming seat slides.

[0015] Preferably, a tooth block is provided on the side surface of the rotating ring, and the rotating ring is meshingly connected with the tooth rod, and the outer surface of the toggle rod is in contact with the inner surface of the discharge barrel.

[0016] By adopting the above technical solution, the gear rod can drive the rotating ring and the toggle rod to rotate.

[0017] Compared with the prior art, the utility model has the following beneficial effects: the injection molding machine with convenient demoulding:

[0018] 1. By arranging a demoulding mechanism above the base, the product can be disengaged from the mold core under the contact of the extended demoulding wheel after molding, so that the product can be smoothly removed from the mold core after molding without the problem of ejector pin marks, ensuring the molding quality of the product outer surface;

[0019] 2. Furthermore, the ejector pin squeezes the displacement plate after the molding seat is retracted into place, so that when the product is out of engagement with the mold core, the displacement plate can pull the demoulding wheel back to contact and clamp the product, so that the product can fall downward for automatic discharge;

[0020] 3. Furthermore, the forming seat is retreated to drive the rotating ring to rotate, so that the rotating ring can drive the toggle rod to rotate to toggle the products falling into the discharge barrel, so that the discharge barrel can buffer the products while preventing the products from accumulating inside the discharge barrel and failing to discharge smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0022] Figure 2 It is a schematic diagram of the three-dimensional structure of the overall cutaway surface of the utility model;

[0023] Figure 3 This is a schematic diagram of the three-dimensional structure of the connection between the discharging barrel and the rotating ring of the utility model;

[0024] Figure 4 This is a schematic diagram of the three-dimensional structure of the connection between the mold plate and the mold core of the utility model;

[0025] Figure 5 This is a schematic diagram of the three-dimensional structure of the connection between the molding seat and the molding cavity of the utility model;

[0026] Figure 6 It is a three-dimensional structural schematic diagram of the cross-section surface connecting the rotating ring and the toggle rod of the utility model;

[0027] Figure 7 For this utility model Figure 2 The enlarged structural diagram at A in the middle;

[0028] Figure 8 For this utility model Figure 2 Enlarged structural diagram at B in the middle.

[0029] In the figure: 1. base; 2. injection machine; 3. injection head; 4. mounting plate; 5. molding hydraulic rod; 6. molding seat; 7. molding cavity; 8. blanking port; 9. guide plate; 10. stripping hydraulic rod; 11. mold plate; 12. mold core; 13. product; 14. sliding frame; 15. demolding wheel; 16. guide wheel; 17. displacement plate; 18. connecting chain; 19. ejector pin; 20. discharge barrel; 21. gear rod; 22. swivel; 23. toggle rod. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] See also Figure 1-8 The utility model provides a technical solution: an injection molding machine with convenient demoulding.

[0032] Embodiment 1

[0033] The present embodiment discloses: a base 1, an injection machine 2 is fixedly mounted on the upper surface of the base 1, and an injection head 3 is mounted on one end of the injection machine 2, a mounting plate 4 is fixedly mounted on the upper surface of one end of the base 1, a molding hydraulic rod 5 is fixedly mounted on the side surface of the mounting plate 4, and a molding seat 6 is fixedly mounted on one end of the molding hydraulic rod 5, and a molding cavity 7 is provided on the side surface of the molding seat 6, a blanking port 8 is provided at one end of the base 1, and guide plates 9 are fixedly mounted on both sides of the blanking port 8, and a demoulding mechanism is provided above the base 1 for demoulding the workpiece after molding and preventing the workpiece from sticking;

[0034] The demoulding mechanism includes: a demoulding hydraulic rod 10, which is fixedly mounted on the side surface of the mounting plate 4, and a mold plate 11 is fixedly mounted on one end of the demoulding hydraulic rod 10, and a mold core 12 is fixedly arranged on the outer surface of the mold plate 11, and a product 13 is arranged between the mold core 12 and the molding cavity 7, a sliding slide frame 14 is installed inside the side surface of the molding seat 6, and a demoulding wheel 15 is fixedly arranged on one end of the slide frame 14, a rotating guide wheel 16 is installed inside the molding seat 6, and a sliding displacement plate 17 is installed inside the molding seat 6, and one end of a connecting chain 18 is fixedly arranged on the outer surface of the displacement plate 17, and the other end of the connecting chain 18 bypasses the outer surface of the guide wheel 16 and is fixedly connected to the sliding frame 14, a ejector pin 19 is fixedly arranged on the side surface of the mounting plate 4, and a hole is provided on the outer surface of the molding seat 6 facing the ejector pin 19;

[0035] One end of the molding seat 6 is engaged with the injection head 3, and a discharge hole is provided at the end of the molding seat 6 engaged with the injection head 3;

[0036] The sliding frame 14 is designed to be inclined toward the injection head 3, and a spring is connected between the sliding frame 14 and the molding seat 6;

[0037] When demolding after the injection molding is completed, the molding hydraulic rod 5 on the side surface of the mounting plate 4 drives the molding seat 6 to slide away from the injection machine 2, and the stripping hydraulic rod 10 drives the mold plate 11 and the molding seat 6 to move synchronously, so that the product 13 inside the molding cavity 7 is disconnected from the injection head 3, and then the stripping hydraulic rod 10 moves into place and stops driving the mold plate 11 to move, while the molding seat 6 continues to disengage from the engagement with the product 13 during the moving process, and the product 13 remains on the mold core 12 on the surface of the mold plate 11. At the same time, the sliding frame 14 slides under the support of the spring between the molding seat 6 and drives the demolding wheel 15 that loses the obstruction of the mold plate 11 to slide to the outside of the molding seat 6 until The demoulding wheel 15 is fully extended to clamp the product 13 from both sides, so that the product 13 moves with the forming seat 6 and disengages from the engagement with the mold core 12. At this time, the sliding frame 14 pulls the displacement plate 17 through the connecting chain 18 and the guide wheel 16. After the forming seat 6 slides into place, the ejector pin 19 is inserted into the hole on the outer surface of the forming seat 6. The ejector pin 19 squeezes the displaced displacement plate 17 so that the displacement plate 17 pulls the sliding frame 14 and the demoulding wheel 15 through the connecting chain 18 to reset and release the clamping of the product 13. The product 13 falls downward through the blanking port 8 on the surface of the base 1, and is guided by the guide plate 9 to prevent the product 13 from scattering.

[0038] Embodiment 2

[0039] This embodiment is based on the embodiment 1 and discloses that: a material receiving mechanism is provided below the base 1 to receive the material and prevent the material from accumulating and being unable to be discharged;

[0040] The material receiving mechanism includes: a discharge cylinder 20, which is fixedly installed just below the blanking port 8, a gear rod 21 is fixedly provided on the side surface of the forming seat 6, a rotating ring 22 is installed on the upper end of the discharge cylinder 20, and a toggle rod 23 is fixedly provided on the inner surface of the rotating ring 22;

[0041] The side surface of the rotating ring 22 is provided with a tooth block, and the rotating ring 22 is meshed and connected with the toothed rod 21, and the outer surface of the toggle rod 23 is in contact with the inner surface of the discharge barrel 20;

[0042] As the product 13 falls into the discharge barrel 20, the discharge barrel 20 cushions the product 13 through the inner inclined surface. During the sliding of the forming seat 6, the forming seat 6 drives the gear rod 21 to slide, and the gear rod 21 drives the toggle rod 23 to rotate by engaging with the swivel ring 22, so that the product 13 will not accumulate inside the discharge barrel 20 and cannot continue to fall through the lower end opening of the discharge barrel 20.

[0043] 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. An injection molding machine for convenient demoulding, comprising a base (1), an injection machine (2) is fixedly mounted on the upper surface of the base (1), and an injection head (3) is mounted on one end of the injection machine (2), a mounting plate (4) is fixedly mounted on the upper surface of one end of the base (1), a molding hydraulic rod (5) is fixedly mounted on the side surface of the mounting plate (4), and a molding seat (6) is fixedly mounted on one end of the molding hydraulic rod (5), and a molding cavity (7) is provided on the side surface of the molding seat (6), a blanking port (8) is provided on one end of the base (1), and guide plates (9) are fixedly mounted on both sides of the blanking port (8), characterized in that: A demoulding mechanism is arranged above the base (1) for demoulding the workpiece after it is formed and preventing the workpiece from sticking.

2. The injection molding machine with convenient demoulding according to claim 1, characterized in that: The demoulding mechanism comprises: a demoulding hydraulic rod (10), the demoulding hydraulic rod (10) is fixedly mounted on the side surface of the mounting plate (4), and a mold plate (11) is fixedly mounted on one end of the demoulding hydraulic rod (10), and a mold core (12) is fixedly arranged on the outer surface of the mold plate (11), and a product (13) is arranged between the mold core (12) and the molding cavity (7), and a sliding frame (14) is installed inside the side surface of the molding seat (6), and a demoulding frame (14) is fixedly arranged on one end of the sliding frame (14). A wheel (15) is provided inside the molding seat (6), a rotating guide wheel (16) is installed inside the molding seat (6), and a sliding displacement plate (17) is installed inside the molding seat (6), and one end of a connecting chain (18) is fixedly provided on the outer surface of the displacement plate (17), and the other end of the connecting chain (18) bypasses the outer surface of the guide wheel (16) and is fixedly connected to the sliding frame (14), and a ejector pin (19) is fixedly provided on the side surface of the mounting plate (4), and a hole is provided on the outer surface of the molding seat (6) facing the ejector pin (19).

3. The injection molding machine with convenient demoulding according to claim 2, characterized in that: One end of the molding seat (6) is mounted in engagement with the injection head (3), and a discharge hole is provided at the end of the molding seat (6) in engagement with the injection head (3).

4. The injection molding machine with convenient demoulding according to claim 2, characterized in that: The sliding frame (14) is designed to be inclined toward the injection head (3), and a spring is connected between the sliding frame (14) and the molding seat (6).

5. The injection molding machine with convenient demoulding according to claim 1, characterized in that: A material receiving mechanism is provided below the base (1) for receiving materials and preventing the materials from piling up and being unable to be discharged.

6. The injection molding machine with convenient demoulding according to claim 5, characterized in that: The material receiving mechanism comprises: a discharge barrel (20), the discharge barrel (20) is fixedly installed directly below the material drop opening (8), a gear rod (21) is fixedly provided on the side surface of the forming seat (6), a rotating ring (22) is installed on the upper end of the discharge barrel (20), and a toggle rod (23) is fixedly provided on the inner surface of the rotating ring (22).

7. The injection molding machine with convenient demoulding according to claim 6, characterized in that: The side surface of the rotating ring (22) is provided with a tooth block, and the rotating ring (22) is meshedly connected with the toothed rod (21), and the outer surface of the toggle rod (23) is in contact with the inner surface of the discharge barrel (20).

Images