Template balancing device for injection molding machine

Abstract

The utility model relates to the technical field of injection molding machines, and discloses a template balancing device for an injection molding machine, which is assembled on a base of the injection molding machine and comprises a template, the template is arranged on the base, and at least one mounting groove is formed in the template; the hydraulic system comprises a hydraulic cylinder arranged between the base and the template, the hydraulic cylinder is provided with a piston capable of movably extending into the mounting groove, and when the piston moves, the template can be driven to longitudinally move relative to the base. The template balancing device for the injection molding machine provided by the utility model is stable in performance and capable of adjusting the height of the template.

Description

Technical Field

[0001] This utility model belongs to the field of injection molding machine technology, specifically relating to a template balancing device for injection molding machines. Background Technology

[0002] In the injection molding process, the mold platen plays a crucial role. It not only supports the mold but also transmits pressure from the injection system to ensure that molten plastic fills the mold cavity evenly, resulting in a product with precise shape and a smooth surface. However, in actual operation, various factors, such as uneven injection pressure distribution, deviations in the mold platen's own weight, and wear on the mechanical structure, can cause the mold platen to shift downwards during operation. This not only affects the tie rods fitted onto the mold platen, subjecting them to unnecessary pressure and causing deformation or even bending, but also reduces the overall working accuracy and stability of the injection molding machine and may pose safety hazards. Utility Model Content

[0003] The purpose of this invention is to address the aforementioned problems in the existing technology by providing a stable and adjustable template balancing device for injection molding machines.

[0004] The objective of this utility model can be achieved through the following technical solution: a template balancing device for an injection molding machine, assembled on the base of the injection molding machine, comprising:

[0005] A template, which is disposed on the base and has at least one mounting groove;

[0006] A hydraulic system, comprising a hydraulic cylinder disposed between the base and the template, the hydraulic cylinder having a piston movably extending into the mounting groove, and the piston being able to drive the template to move longitudinally relative to the base when it moves.

[0007] In the above-mentioned template balancing device for an injection molding machine, after the piston extends into the mounting groove, the mounting groove and the piston cooperate to form an oil cavity, and the template is provided with an oil injection hole communicating with the oil cavity; when the oil cavity is filled or drained through the oil injection hole, the piston moves longitudinally in the mounting groove and drives the template to move longitudinally relative to the base.

[0008] In the above-mentioned template balancing device for an injection molding machine, the mounting groove includes a first cavity and a second cavity that are interconnected, the inner diameter of the first cavity is smaller than the inner diameter of the second cavity, and the piston is movably located in the second cavity.

[0009] In the above-mentioned template balancing device for an injection molding machine, the hydraulic cylinder further includes a cylinder barrel detachably connected to the template, the piston is movably sleeved inside the cylinder barrel, and the end of the piston away from the template is detachably connected to the base; when the oil chamber enters or exits through the oil injection hole, the cylinder barrel drives the template to move longitudinally relative to the piston.

[0010] In the above-mentioned template balancing device for an injection molding machine, the cylinder includes a first connecting end and a second connecting end. The first connecting end extends into the second cavity, the second connecting end is locked outside the second cavity, and the second connecting end is detachably connected to the template.

[0011] In the above-mentioned template balancing device for an injection molding machine, the cylinder is further provided with a first sealing strip and a second sealing strip. The first sealing strip is disposed between the outer wall of the cylinder and the second cavity, and the second sealing strip is disposed between the inner wall of the cylinder and the piston.

[0012] In the above-mentioned template balancing device for injection molding machine, the mounting groove further includes a third cavity communicating with the second cavity, and the inner diameter of the third cavity is larger than the inner diameter of the second cavity. A support seat is also provided between the piston and the base. The support seat is located in the third cavity, one side of which is detachably connected to the piston, and the other side is fitted and connected to the base, and can move relative to the base.

[0013] In the above-mentioned template balancing device for injection molding machine, there are two sets of mounting slots, which are symmetrically arranged on both sides of the template, and there are also two sets of hydraulic cylinders, which correspond one-to-one with the two sets of mounting slots.

[0014] In the above-mentioned template balancing device for an injection molding machine, each group of mounting slots includes at least two mounting slots, and each group of hydraulic cylinders includes at least two hydraulic cylinders.

[0015] In the aforementioned template balancing device for an injection molding machine, the hydraulic system further includes a control element for detecting the pressure value of the template and driving the piston to move within the mounting groove according to the magnitude of the pressure value.

[0016] Compared with existing technologies, the beneficial effects of this utility model are as follows: By setting an installation groove on the template and installing a hydraulic cylinder between the template and the base, and allowing the piston of the hydraulic cylinder to extend movably into the installation groove, the piston can drive the template to move longitudinally relative to the base when it moves. This design allows users to adjust the height of the template as needed, ensuring that the template is always in an ideal horizontal state. On the one hand, it effectively avoids pressure on key components such as tie rods, preventing them from undergoing permanent deformation due to excessive force, extending the service life of the tie rods, and reducing maintenance costs. On the other hand, by maintaining the stability and balance of the template, it effectively reduces mechanical vibration and other adverse effects caused by template displacement, improving the overall operational stability and reliability of the injection molding machine. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the template balancing device assembled on an injection molding machine according to an embodiment of the present invention.

[0018] Figure 2 for Figure 1 Exploded view.

[0019] Figure 3 for Figure 1 Cross-sectional view.

[0020] Figure 4 This is a cross-sectional view of the template in an embodiment of this utility model.

[0021] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically: 100, template; 110, mounting groove; 111, first cavity; 112, second cavity; 120, oil injection hole; 130, third cavity; 200, hydraulic cylinder; 210, piston; 220, cylinder barrel; 221, first connecting end; 222, second connecting end; 300, first sealing strip; 310, second sealing strip; 400, support base; 500, base; 510, slide rail. Detailed Implementation

[0022] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0023] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0024] like Figures 1 to 4 As shown, a template 100 balancing device for an injection molding machine is assembled on the base 500 of the injection molding machine, and includes:

[0025] Template 100, which is disposed on base 500, and template 100 is provided with at least one mounting groove 110;

[0026] The hydraulic system includes a hydraulic cylinder 200 located between the base 500 and the template 100. The hydraulic cylinder 200 has a piston 210 that movably extends into the mounting groove 110, and when the piston 210 moves, it drives the template 100 to move longitudinally relative to the base 500. This design allows the user to adjust the height of the template 100 as needed, ensuring that the template 100 is always in an ideal horizontal position. On the one hand, this effectively avoids pressure on key components such as tie rods, preventing permanent deformation due to excessive force, extending the service life of the tie rods, and reducing maintenance costs. On the other hand, by maintaining the stability and balance of the template 100, it effectively reduces mechanical vibration and other adverse effects caused by template 100 displacement, improving the overall operational stability and reliability of the injection molding machine.

[0027] Specifically, such as Figures 1 to 4 As shown, in this embodiment, the template 100 balancing device is mounted on the injection molding machine. The injection molding machine includes a rectangular base 500, and two slides 510 are symmetrically arranged on both sides of the base 500. These two slides 510 are not only used to support the template 100, but also to assist the template 100 in opening and closing the mold.

[0028] In this embodiment, the template 100 balancing device includes a template 100 vertically mounted on a base 500. The template 100 is movably connected to two slide rails 510, and the template 100 has at least one mounting groove 110 on the side facing the base 500 for use with a hydraulic system to adjust the height of the template 100. When the mounting groove 110 is a single groove, it is located at the center of the template 100 on the side closest to the base 500.

[0029] To improve the stability of adjusting the height of the template 100, in this embodiment, two sets of mounting grooves 110 are provided, symmetrically arranged on both sides of the template 100, and the two mounting grooves 110 correspond one-to-one with the two slide rails 510. This design, in conjunction with the hydraulic system, not only provides sufficient power for adjusting the height of the template 100, but also ensures uniform force distribution on both sides of the template 100, thereby guaranteeing the stability of the template 100's height adjustment.

[0030] Preferably, in this embodiment, each set of mounting slots 110 includes at least two mounting slots 110 arranged in a straight line. Specifically, each slide rail 510 corresponds to two mounting slots 110. The redundant design of multiple mounting slots 110 not only improves the reliability of the system but also enhances the stability of the template 100 when adjusting its height. Even under complex working conditions, the coordinated operation of multiple hydraulic cylinders 200 ensures that the template 100 is always in the optimal position, reducing mechanical vibration and other adverse effects, and improving the overall operational stability and reliability of the injection molding machine.

[0031] In this embodiment, each mounting groove 110 extends vertically along the edge of the template 100 in a direction away from the base 500, and includes a first cavity 111 and a second cavity 112 that are interconnected. The first cavity 111 is located above the second cavity 112, and the inner diameter of the first cavity 111 is smaller than the inner diameter of the second cavity 112. The first cavity 111 is mainly used to store hydraulic oil and serves as a pressure buffer. When hydraulic oil is injected from the injection port 120, it first fills the first cavity 111 and then gradually transfers to the second cavity 112. This design helps to smoothly establish system pressure, reduce pressure fluctuations, and ensure that the piston 210 is subjected to uniform force. Furthermore, the smaller cross-sectional area allows for a faster flow rate but a smaller flow rate of hydraulic oil within the first cavity 111, which helps to quickly establish a pressure difference and drive the piston 210 to move rapidly. The second cavity 112 mainly provides movement space for the piston 210, ensuring that the piston 210 can move sufficiently to meet the needs of different height adjustments. The large inner diameter design of the second cavity 112 not only increases the stroke range of the piston 210, but also optimizes the transmission of hydraulic force, improving the system's response speed and accuracy. The larger cross-sectional area allows more hydraulic oil to enter or exit, ensuring that the piston 210 can move freely within a wider range. In addition, the layered design of the first cavity 111 and the second cavity 112 enables the system to maintain high-precision height adjustment under different operating conditions.

[0032] In this embodiment, the template 100 further includes a third cavity 130 communicating with the second cavity 112, and the inner diameter of the third cavity 130 is larger than the inner diameter of the second cavity 112. Preferably, the third cavity 130 communicates with two parallel mounting slots 110. The design of the third cavity 130 provides space for the placement of the support base 400 and improves the utilization rate of the internal space of the template 100, making the overall structure of the template 100 balancing device more compact.

[0033] In this embodiment, the hydraulic system includes a hydraulic cylinder 200 disposed between the base 500 and the template 100. The hydraulic cylinder 200 is vertically mounted on the base 500 and has a piston 210 that can be movably extended into the mounting groove 110. When the piston 210 moves in the mounting groove 110, it can drive the template 100 to move longitudinally relative to the base 500, thereby realizing the height adjustment of the template 100 so that the template 100 can always be kept in an ideal horizontal state.

[0034] In this embodiment, after the piston 210 extends into the mounting groove 110, the mounting groove 110 and the piston 210 cooperate to form an oil chamber, and the template 100 is provided with an oil injection hole 120 communicating with the oil chamber; when oil enters or exits the oil chamber through the oil injection hole 120, the piston 210 moves longitudinally along the length direction of the mounting groove 110 under the action of hydraulic oil, and drives the template 100 to move longitudinally relative to the base 500. The formation of this oil chamber and its cooperation design with the oil injection hole 120 and the piston 210 not only realizes the precise control and stable support of the height of the template 100, but also enables the dynamic adjustment of the height of the template 100 in conjunction with the control element.

[0035] In this embodiment, the hydraulic cylinder 200 further includes a cylinder barrel 220 detachably connected to the template 100. The piston 210 is movably fitted inside the cylinder barrel 220, and the end of the piston 210 facing away from the template 100 is detachably connected to the base 500. When oil enters or exits the oil chamber through the oil injection hole 120, the cylinder barrel 220 drives the template 100 to move longitudinally relative to the piston 210. Specifically, when hydraulic oil enters the oil chamber through the oil injection hole 120, the oil chamber space above the piston 210 is expanded. Since the piston 210 is connected to the base 500, the cylinder barrel 220 moves upward relative to the piston 210, causing the template 100 to rise. When the hydraulic oil in the oil chamber is discharged through the oil injection hole 120, the oil chamber space above the piston 210 is reduced, and the cylinder barrel 220 moves downward relative to the piston 210, causing the template 100 to fall. This design not only enables stable adjustment of the template 100, but also simplifies the assembly process through the detachable connection of the cylinder 220 and piston 210, making maintenance and replacement more convenient.

[0036] In this embodiment, the cylinder 220 is a hollow cylindrical boss-shaped part, including a first connecting end 221 and a second connecting end 222. The first connecting end 221 extends from bottom to top into the second cavity 112, and the diameter of the first connecting end 221 is adapted to the inner diameter of the second cavity 112. The second connecting end 222 is engaged outside the second cavity 112, and the second connecting end 222 is detachably connected to the template 100 by bolts. This design ensures that the cylinder 220 is firmly fixed on the template 100 without affecting the operation of the internal components, avoiding loosening caused by vibration or impact. It also improves the ease of disassembly and assembly of the hydraulic cylinder 200.

[0037] In this embodiment, the cylinder 220 is further provided with a first sealing strip 300 and a second sealing strip 310. The first sealing strip 300 is wrapped around the outer wall of the first connecting end 221 and the second cavity 112, and the second sealing strip 310 is wrapped around the inner wall of the second connecting end 222 and the piston 210. This design effectively prevents hydraulic oil leakage through double sealing, ensuring the normal operation of the system, while protecting the working environment from pollution.

[0038] Since the template 100 needs to move on the base 500 during mold opening and closing, in this embodiment, a support seat 400 is also provided between the piston 210 and the base 500. The support seat 400 is located in the third cavity 130, with one side detachably connected to the piston 210 and the other side fitted to the base 500, and can move relative to the base 500. Preferably, the support seat 400 is made of copper plate. This design avoids direct contact between the piston 210 and the base 500, thereby reducing wear on the piston 210 and ensuring the smoothness of template 100 adjustment.

[0039] To improve the overall stability of the template 100 height adjustment, in this embodiment, two sets of hydraulic cylinders 200 are provided, each corresponding to one of the two sets of mounting slots 110. Preferably, each set of hydraulic cylinders 200 includes at least two hydraulic cylinders 200 arranged in a straight line. This design ensures a balanced distribution of force on the template 100, maintaining good balance even under complex conditions. Furthermore, the configuration of two hydraulic cylinders 200 on each side provides higher control precision and greater support force, adapting to more diverse product manufacturing needs and effectively improving production efficiency and product quality.

[0040] In this embodiment, the hydraulic system also includes a control element (not shown in the figure) for detecting the pressure value of the template 100 and driving the piston 210 to move within the mounting groove 110 according to the pressure value. The addition of the control element allows the hydraulic system to automatically adjust the position of the piston 210 based on the real-time detected pressure value, achieving closed-loop control, effectively improving the level of automation in production, reducing errors caused by human factors, and ensuring product consistency and high quality.

[0041] It should be noted that in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly defined. The terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal connection of two elements or the interaction between two elements, unless otherwise explicitly defined. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0042] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0043] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A template balancing device for an injection molding machine, assembled on the base of the injection molding machine, characterized in that, include: A template, which is disposed on the base and has at least one mounting groove; A hydraulic system, comprising a hydraulic cylinder disposed between the base and the template, the hydraulic cylinder having a piston movably extending into the mounting groove, and the piston being able to drive the template to move longitudinally relative to the base when it moves.

2. The template balancing device for an injection molding machine according to claim 1, characterized in that, After the piston extends into the mounting groove, the mounting groove and the piston cooperate to form an oil cavity, and the template is provided with an oil injection hole communicating with the oil cavity; when the oil cavity is filled or drained through the oil injection hole, the piston moves longitudinally in the mounting groove and drives the template to move longitudinally relative to the base.

3. A template balancing device for an injection molding machine according to claim 2, characterized in that, The mounting groove includes a first cavity and a second cavity that are interconnected. The inner diameter of the first cavity is smaller than the inner diameter of the second cavity, and the piston is movably located within the second cavity.

4. A template balancing device for an injection molding machine according to claim 3, characterized in that, The hydraulic cylinder also includes a cylinder barrel detachably connected to the template. The piston is movably fitted inside the cylinder barrel, and the end of the piston away from the template is detachably connected to the base. When the oil chamber enters or exits through the oil injection hole, the cylinder barrel drives the template to move longitudinally relative to the piston.

5. A template balancing device for an injection molding machine according to claim 4, characterized in that, The cylinder includes a first connecting end and a second connecting end. The first connecting end extends into the second cavity, and the second connecting end is locked outside the second cavity. The second connecting end is detachably connected to the template.

6. A template balancing device for an injection molding machine according to claim 4, characterized in that, The cylinder is also provided with a first sealing strip and a second sealing strip. The first sealing strip is located between the outer wall of the cylinder and the second cavity, and the second sealing strip is located between the inner wall of the cylinder and the piston.

7. A template balancing device for an injection molding machine according to claim 4, characterized in that, The template also includes a third cavity communicating with the second cavity, and the inner diameter of the third cavity is larger than the inner diameter of the second cavity. A support seat is also provided between the piston and the base. The support seat is located in the third cavity, one side of which is detachably connected to the piston, and the other side is fitted and connected to the base, and can move relative to the base.

8. A template balancing device for an injection molding machine according to claim 1, characterized in that, The mounting slots are provided in two sets, symmetrically arranged on both sides of the template, and the hydraulic cylinders are also provided in two sets, corresponding one-to-one with the two sets of mounting slots.

9. A template balancing device for an injection molding machine according to claim 8, characterized in that, Each set of mounting slots includes at least two mounting slots, and each set of hydraulic cylinders includes at least two hydraulic cylinders.

10. A template balancing device for an injection molding machine according to claim 1, characterized in that, The hydraulic system also includes a control element for detecting the pressure value of the template and driving the piston to move within the mounting groove according to the magnitude of the pressure value.

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