Pressure-adjustable injection molding equipment

Abstract

The utility model discloses pressure-adjustable injection molding equipment which comprises a case, an injection molding machine main body is fixedly mounted at the top of the case, the top of the injection molding machine main body is communicated with a hopper, a screw rod is movably mounted on the right side of the injection molding machine main body, and the right end of the screw rod is connected with a mold. According to the utility model, the pressure sensor is arranged at the upper end part of the injection oil cylinder, so that the injection pressure can be monitored in real time, an operator can know the pressure change condition in the injection molding process in time so as to make corresponding adjustment, the injection molding process is always carried out under a proper pressure condition, and the production efficiency is improved. An operator only needs to control the rotating angle of the adjusting ball by rotating the rotating rod, pressure adjustment can be achieved, operation is convenient and fast, the requirement for professional skills of the operator is lowered, the connecting base is installed in the pressure adjusting box in a sealed mode, the sealing performance of a hydraulic system is guaranteed, and the risk of hydraulic oil leakage is reduced; and the reliability and the service life of equipment are improved.

Description

Technical Field

[0001] This utility model relates to the field of injection molding equipment technology, specifically to an adjustable pressure injection molding equipment. Background Technology

[0002] Traditional injection molding equipment typically uses fixed or limited-adjustment injection pressure during the injection process. This makes it impossible to precisely adjust the injection pressure according to actual needs when producing plastic products of different specifications and materials, thus affecting the molding quality of the products. When the injection pressure is too high, it may cause defects such as flash and deformation in the plastic products; while when the injection pressure is too low, it may lead to incomplete filling and air bubbles in the plastic products, reducing production efficiency and product qualification rate. Therefore, it is necessary to develop an injection molding equipment with adjustable pressure to solve the above problems. Utility Model Content

[0003] The purpose of this invention is to provide an injection molding equipment with adjustable pressure, which has the advantage of adjustable pressure.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a pressure-adjustable injection molding equipment, including a machine housing, an injection molding machine body fixedly installed on the top of the machine housing, a hopper connected to the top of the injection molding machine body, a screw movably installed on the right side of the injection molding machine body, a mold connected to the right end of the screw, an injection cylinder fixedly installed on the left end of the screw, a pressure sensor installed at the upper end of the injection cylinder, an oil injection pipe connected to the front of the injection cylinder, a pressure regulating box installed at the middle end of the oil injection pipe, a connecting seat sealed inside the pressure regulating box, an adjusting ball rotatably installed inside the connecting seat, and a rotating rod fixedly installed at the upper end of the adjusting ball.

[0005] As a preferred embodiment, a flange is fixedly installed at the lower end of the oil injection pipe, and a sealing ring is provided below the flange, with the sealing rings installed symmetrically at the top and bottom.

[0006] As a preferred embodiment, the upper end of the rotating rod extends through to the top of the pressure regulating box and a turntable is fixedly installed thereon. A sealing block is sleeved on the outside of the upper end of the rotating rod, and the bottom of the sealing block is connected to the top of the pressure regulating box.

[0007] As a preferred embodiment, a support frame is fitted onto the bottom of the pressure regulating box, and a reinforcing support plate is bolted to the bottom of the support frame. The lower end of the reinforcing support plate is connected to the left end of the bottom of the injection molding machine body.

[0008] As a preferred embodiment, the adjusting ball has an oil hole inside, and the oil hole portion of the adjusting ball is flat.

[0009] As a preferred embodiment, the connecting seat has a through groove in the middle for the adjustment ball to move, and a rotating groove in the top for the rotating rod to move.

[0010] As a preferred embodiment, a sealing rubber ring is provided between the inner wall of the connecting seat and the outer surface of the adjusting ball, and the sealing rubber ring is made of fluororubber.

[0011] As a preferred embodiment, the two ends of the oil injection pipe are respectively sealed to the injection cylinder and the pressure regulating box through flanges, and a sealing gasket is provided between the connecting surfaces of the flanges. The sealing gasket is a metal spiral wound gasket.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model uses a pressure sensor installed at the upper end of the injection cylinder to monitor the injection pressure in real time. This allows operators to understand the pressure changes during the injection process and make corresponding adjustments to ensure that the injection process is always carried out under suitable pressure conditions. Operators only need to control the rotation angle of the adjusting ball by rotating the rotating rod to achieve pressure adjustment. The operation is convenient and quick, reducing the requirements for operators' professional skills. The pressure regulating box has a sealed mounting connection seat inside, which ensures the sealing of the hydraulic system, reduces the risk of hydraulic oil leakage, and improves the reliability and service life of the equipment.

[0014] 2. This utility model uses a support frame installed at the bottom of the pressure regulating box, and a reinforcing support plate is installed at the bottom of the support frame with bolts. This structural design provides reliable support for the pressure regulating box and enhances the stability of the pressure regulating box during operation. Vibration will occur during injection molding. The stable support structure can prevent the pressure regulating box from shifting or being damaged due to vibration, ensuring its normal operation and thus ensuring the stable operation of the pressure regulating function of the entire injection molding equipment. Attached Figure Description

[0015] Figure 1 This is a first-person perspective structural perspective view of the present invention;

[0016] Figure 2 This is a second-view perspective structural perspective view of the present invention;

[0017] Figure 3 This is a partial structural cross-sectional view of the present invention;

[0018] Figure 4 This utility model Figure 3 Enlarged view of the local structure at point A in the middle.

[0019] In the diagram: 1. Chassis; 2. Injection molding machine body; 3. Hopper; 4. Screw; 5. Injection cylinder; 6. Mold; 7. Injection pipe; 8. Sealing ring; 9. Pressure regulating box; 10. Connecting seat; 11. Adjusting ball; 12. Rotating rod; 13. Turntable; 14. Sealing block; 15. Support frame; 16. Reinforcing support plate; 17. Pressure sensor. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0022] Example 1:

[0023] Please see Figure 1 As shown, this utility model provides a pressure-adjustable injection molding equipment, including a housing 1. An injection molding machine body 2 is fixedly installed on the top of the housing 1. A hopper 3 is connected to the top of the injection molding machine body 2. A screw 4 is movably installed on the right side of the injection molding machine body 2. A mold 6 is connected to the right end of the screw 4. An injection cylinder 5 is fixedly installed on the left end of the screw 4. A pressure sensor 17 is installed on the upper part of the injection cylinder 5. An oil injection pipe 7 is connected to the front of the injection cylinder 5. A pressure regulating box 9 is installed in the middle of the oil injection pipe 7. A connecting seat 10 is sealed inside the pressure regulating box 9. An adjusting ball 11 is rotatably installed inside the connecting seat 10. A rotating rod 12 is fixedly installed on the upper end of the adjusting ball 11.

[0024] This technical solution uses a pressure sensor 17 installed at the upper end of the injection cylinder 5 to monitor the injection pressure in real time. This allows operators to understand the pressure changes during the injection process and make corresponding adjustments to ensure that the injection process is always carried out under suitable pressure conditions. Operators only need to control the rotation angle of the adjusting ball 11 by rotating the rotating rod 12 to achieve pressure adjustment. The operation is convenient and quick, reducing the requirements for operators' professional skills. The pressure regulating box 9 has a sealed mounting seat 10 inside, which ensures the sealing of the hydraulic system, reduces the risk of hydraulic oil leakage, and improves the reliability and service life of the equipment.

[0025] Example 2:

[0026] Based on Embodiment 1, this utility model is as follows: Figure 3 As shown, a flange is fixedly installed at the lower end of the oil injection pipe 7, and a sealing ring 8 is provided below the flange, with the sealing ring 8 installed symmetrically at the top and bottom; a turntable 13 is fixedly installed at the upper end of the rotating rod 12, extending through to the top of the pressure regulating box 9, and a sealing block 14 is sleeved on the outer side of the upper end of the rotating rod 12, with the bottom of the sealing block 14 connected to the top of the pressure regulating box 9.

[0027] Adopting such Figure 1 The technical solution shown features symmetrically arranged sealing rings 8, which greatly enhance the sealing effect of the connection part of the oil injection pipe 7 and effectively prevent hydraulic oil leakage. During the injection molding process, the hydraulic oil pressure is high, and good sealing can ensure the stable operation of the hydraulic system, avoid pressure loss and environmental pollution caused by leakage, and also reduce hydraulic oil consumption and reduce equipment maintenance costs. The sealing block 14 on the upper end of the rotating rod 12 ensures the sealing between the rotating rod 12 and the pressure regulating box 9, preventing dust, impurities and other contaminants from entering the pressure regulating box 9.

[0028] Secondly, in the technical solution, a support frame 15 is sleeved and installed at the bottom of the pressure regulating box 9, and a reinforcing support plate 16 is installed at the bottom of the support frame 15 by bolts. The lower end of the reinforcing support plate 16 is connected to the left end of the bottom of the injection molding machine body 2. An oil hole is opened inside the regulating ball 11, and the oil hole part of the regulating ball 11 is flat.

[0029] Its adoption is as follows Figure 1 The technical solution shown has a support frame 15 fitted at the bottom of the pressure regulating box 9, and a reinforcement support plate 16 is installed at the bottom of the support frame 15 by bolts. This structural design provides reliable support for the pressure regulating box 9 and enhances the stability of the pressure regulating box 9 during operation. Vibration will occur during the injection molding process. The stable support structure can prevent the pressure regulating box 9 from shifting or being damaged due to vibration, ensuring its normal operation and thus ensuring the stable operation of the pressure regulating function of the entire injection molding equipment.

[0030] Example 3:

[0031] This utility model is as follows Figures 1-4 As shown, the connecting seat 10 has a through groove in the middle for the adjustment ball 11 to move, and a rotating groove on the top of the connecting seat 10 for the rotating rod 12 to move; a sealing rubber ring is provided between the inner wall of the connecting seat 10 and the outer surface of the adjustment ball 11, and the sealing rubber ring is made of fluororubber; the two ends of the oil injection pipe 7 are respectively sealed to the injection cylinder 5 and the pressure regulating box 9 through flanges, and a sealing gasket is provided between the connecting surfaces of the flanges, and the sealing gasket is a metal spiral wound gasket.

[0032] Using the above technical solution, a fluororubber sealing ring is provided between the inner wall of the connecting seat 10 and the outer surface of the adjusting ball 11. Fluororubber has excellent high temperature resistance, oil resistance and chemical corrosion resistance. It can maintain good elasticity and sealing performance under high temperature and high pressure environment during injection molding. This can not only prevent hydraulic oil leakage, but also ensure that the sealing ring will not fail due to friction, wear or chemical corrosion during the rotation of the adjusting ball 11, thereby maintaining the sealing of the pressure regulating box 9 and the accuracy of pressure regulation.

[0033] The working principle of this utility model is as follows: The operator presets a suitable injection pressure value based on the specifications and material of the produced plastic product. The external control system compares the actual pressure signal from the pressure sensor 17 with the preset pressure value. When there is a deviation between the actual pressure and the preset pressure, the operator rotates the turntable 13 to drive the rotating rod 12. The rotating rod 12 then drives the adjusting ball 11 to rotate within the through groove of the connecting seat 10. Since the adjusting ball 11 has a flat oil hole inside, the opening size of the oil hole changes when the adjusting ball 11 rotates, thereby changing the flow rate of hydraulic oil in the injection pipe 7. If the actual pressure is lower than the preset pressure, the opening of the oil hole in the adjusting ball 11 is increased, allowing more hydraulic oil to enter the injection cylinder 5 through the injection pipe 7, thereby increasing the thrust of the injection cylinder 5 and increasing the injection pressure. If the actual pressure is higher than the preset pressure, the opening of the oil hole in the adjusting ball 11 is decreased, reducing the amount of hydraulic oil entering the injection cylinder 5 and lowering the injection pressure.

[0034] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0035] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A pressure-adjustable injection molding apparatus comprising a machine housing (1), characterized in that: The top of the case (1) is fixedly installed with an injection molding machine body (2), the top of the injection molding machine body (2) is communicated with a hopper (3), the right side of the injection molding machine body (2) is movably installed with a screw rod (4), the right end of the screw rod (4) is connected with a mold (6), the left end of the screw rod (4) is fixedly installed with an injection oil cylinder (5), the upper end of the injection oil cylinder (5) is installed with a pressure sensor (17), the front of the injection oil cylinder (5) is communicated with an oil injection pipe (7), the middle end of the oil injection pipe (7) is installed with a pressure regulating tank (9), the inside of the pressure regulating tank (9) is sealingly installed with a connecting seat (10), the inside of the connecting seat (10) is rotatably installed with an adjusting ball (11), the upper end of the adjusting ball (11) is fixedly installed with a rotating rod (12).

2. A pressure-adjustable injection molding apparatus according to claim 1, characterized by: The lower end of the oil injection pipe (7) is fixedly installed with a flange plate, and a sealing ring (8) is arranged below the flange plate, and the sealing ring (8) is symmetrically installed upward and downward.

3. A pressure adjustable injection molding apparatus as defined in claim 1, wherein: The upper end of the rotating rod (12) penetrates through the upper side of the pressure regulating tank (9) and is fixedly installed with a rotating disc (13), the outside of the upper end of the rotating rod (12) is sleeved with a sealing block (14), and the bottom of the sealing block (14) is connected with the top of the pressure regulating tank (9).

4. A pressure adjustable injection molding apparatus as defined in claim 1, wherein: The bottom of the pressure regulating tank (9) is sleeved with a supporting frame (15), the bottom of the supporting frame (15) is installed with a reinforcing support plate (16) through bolts, and the lower end of the reinforcing support plate (16) is connected with the left end of the bottom of the injection molding machine body (2).

5. A pressure adjustable injection molding apparatus as defined in claim 1, wherein: An oil hole is formed in the inside of the adjusting ball (11), and the oil hole part of the adjusting ball (11) is provided in a flat shape.

6. A pressure adjustable injection molding apparatus as defined in claim 1, wherein: A through groove for the movement of the adjusting ball (11) is formed in the middle of the connecting seat (10), and a rotating groove for the movement of the rotating rod (12) is formed in the top of the connecting seat (10).

7. A pressure adjustable injection molding apparatus as defined in claim 1, wherein: A sealing rubber ring is arranged between the inner wall of the connecting seat (10) and the outer surface of the adjusting ball (11), and the material of the sealing rubber ring is fluorine rubber.

8. A pressure adjustable injection molding apparatus as defined in claim 1, wherein: The two ends of the oil injection pipe (7) are sealingly connected with the injection oil cylinder (5) and the pressure regulating tank (9) through flange plates, and sealing gaskets are arranged between the connecting surfaces of the flange plates, and the sealing gaskets are metal winding gaskets.

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