Electric safety door transmission structure for injection molding machines

Abstract

This invention discloses an electric safety door transmission structure for an injection molding machine, including a base assembly, an injection door assembly, a closed-state limit switch, and an open-state limit switch. The injection door assembly is provided with a first abutment protrusion corresponding to the closed-state limit switch and a second abutment protrusion corresponding to the open-state limit switch. The injection door assembly is slidably mounted on the base assembly. The closed-state limit switch and the open-state limit switch are connected to an injection control terminal. When the open-state limit switch transmits an open-state signal to the injection control terminal, the injection control terminal stops operating. By using the cooperation of the open-state limit switch and the second abutment protrusion to detect whether the injection door assembly is in the open state, the injection control terminal can control the injection or mold closing action, improving the overall safety performance of the equipment, solving the problem of low safety performance, and ensuring the safety of operators.

Description

Technical Field

[0001] This invention relates to the field of injection molding, and more particularly to an electric safety door transmission structure for an injection molding machine. Background Technology

[0002] Currently, injection molding, also known as injection molding, is a molding method that combines injection and molding. The advantages of injection molding include high production speed and efficiency, automated operation, a wide variety of designs and shapes (from simple to complex), and sizes ranging from large to small. It also produces dimensionally accurate products, facilitates product updates and replacements, and can create complex shapes. Injection molding is suitable for mass production and molding processes involving complex shapes.

[0003] However, existing large injection molding machines have the following drawbacks when in use:

[0004] Large injection molding machines on the market operate under high internal pressure during injection, resulting in very high temperatures of molten plastic. These high-temperature, high-pressure molds pose a threat to human safety. Furthermore, injection molding equipment on the market remains in a closed or operating state even when the safety door is open, indicating low safety performance. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, one of the objectives of this invention is to provide an electric safety door transmission structure for injection molding machines, which can solve the problem of low safety performance.

[0006] One of the objectives of this invention is achieved through the following technical solution:

[0007] An electric safety door transmission structure for an injection molding machine includes a base assembly, an injection door assembly, a closed-state limit switch, and an open-state limit switch. The injection door assembly is provided with a first abutment protrusion corresponding to the closed-state limit switch and a second abutment protrusion corresponding to the open-state limit switch. The injection door assembly is slidably mounted on the base assembly. The closed-state limit switch and the open-state limit switch are connected to an injection molding control terminal. When the open-state limit switch transmits an open state signal to the injection molding control terminal, the injection molding control terminal stops operating.

[0008] Furthermore, the base assembly includes an upper guide rail and a lower guide rail located below the upper guide rail. The injection-molded door assembly is provided with an upper guide wheel and a lower guide wheel. The upper guide wheel is slidably installed on the upper guide rail, and the lower guide wheel is slidably installed on the lower guide rail.

[0009] Furthermore, the extension direction of the upper guide rail is parallel to the extension direction of the lower guide rail.

[0010] Furthermore, there are two limit switches in both the closed and open states.

[0011] Furthermore, the second abutment protrusion is elongated, and its end is provided with an inclined end face.

[0012] Furthermore, the extension direction of the second abutment protrusion is parallel to the extension direction of the base assembly.

[0013] Furthermore, the electric safety door transmission structure of the injection molding machine also includes a fully open limit switch, which is located at the end of the injection door assembly. When the fully open limit switch contacts the first abutment protrusion, the injection door assembly is in a fully open state.

[0014] Furthermore, the closed-state limit switch is located between the open-state limit switch and the fully open limit switch.

[0015] Furthermore, the electric safety door transmission structure of the injection molding machine also includes a drive component and a transmission belt. The drive component drives the transmission belt to move, and the injection molding door assembly is provided with a fixed end. The transmission belt is fixedly connected to the fixed end.

[0016] Furthermore, the electric safety door transmission structure of the injection molding machine also includes a shielding protection component, which is located above the closed state limit switch and the open state limit switch.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] The injection door assembly is slidably mounted on the base assembly. The closed and open limit switches are connected to the injection control terminal. When the open limit switch transmits an open signal to the injection control terminal, the injection control terminal stops operating. The use of the open limit switch in conjunction with the second abutment to detect whether the injection door assembly is open allows the injection control terminal to control the injection or mold closing actions, improving the overall safety performance of the equipment, solving the problem of low safety performance, and ensuring the safety of operators.

[0019] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0020] Figure 1 This is a perspective view of the electric safety door transmission structure of the injection molding machine of the present invention in the closed state;

[0021] Figure 2 for Figure 1 A magnified view of point A in the electric safety door transmission structure of the injection molding machine shown.

[0022] Figure 3 for Figure 1 A magnified view of point B in the electric safety door transmission structure of the injection molding machine shown.

[0023] Figure 4 for Figure 1 A magnified view of point C in the electric safety door transmission structure of the injection molding machine shown.

[0024] Figure 5 for Figure 1 A magnified view of point D in the electric safety door transmission structure of the injection molding machine shown;

[0025] Figure 6 for Figure 1 A magnified view of point E in the electric safety door transmission structure of the injection molding machine shown;

[0026] Figure 7 for Figure 1 The image shown is a 3D view of the electric safety door transmission structure of the injection molding machine in the fully open state.

[0027] In the diagram: 10. Base assembly; 11. Upper guide rail; 12. Lower guide rail; 20. Injection-molded door assembly; 21. Upper guide wheel; 22. Lower guide wheel; 23. First abutting protrusion; 2301. Closed state limit switch; 24. Second abutting protrusion; 241. Inclined end face; 2401. Open state limit switch; 25. Fixed end; 2501. Fully open limit switch; 30. Drive component; 31. Transmission belt. Detailed Implementation

[0028] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0029] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0031] Please see Figure 1-7 An electric safety door transmission structure for an injection molding machine includes a base assembly 10, an injection door assembly 20, a closed-state limit switch 2301, and an open-state limit switch 2401. The injection door assembly 20 is provided with a first abutment protrusion 23 corresponding to the closed-state limit switch 2301 and a second abutment protrusion 24 corresponding to the open-state limit switch 2401. The injection door assembly 20 is slidably mounted on the base assembly 10. The closed-state limit switch 2301 and the open-state limit switch 2401 are connected to an injection control terminal. When the open-state limit switch 2401 transmits an open-state signal to the injection control terminal, the injection control terminal stops its operation. By using the cooperation of the open-state limit switch 2401 and the second abutment protrusion 24 to detect whether the injection door assembly 20 is in the open state, the injection control terminal can control the injection or mold closing action, improving the overall safety performance of the equipment, solving the problem of low safety performance, and ensuring the safety of operators.

[0032] Preferably, the base assembly 10 includes an upper guide rail 11 and a lower guide rail 12 located below the upper guide rail 11. The injection-molded door assembly 20 is provided with an upper guide wheel 21 and a lower guide wheel 22. The upper guide wheel 21 is slidably mounted on the upper guide rail 11, and the lower guide wheel 22 is slidably mounted on the lower guide rail 12. The use of double-layer rails improves the stability of the transmission and solves the problem of wobbling.

[0033] Specifically, the extension direction of the upper guide rail 11 is parallel to the extension direction of the lower guide rail 12. There are two limit switches in both the closed and open states. The purpose of setting the number of limit switches to two is to avoid false alarms from a single limit switch.

[0034] Preferably, the second abutment protrusion 24 is elongated, and its end is provided with an inclined end face 241. The extending direction of the second abutment protrusion 24 is parallel to the extending direction of the base assembly 10. The electric safety door transmission structure of the injection molding machine also includes a fully open limit switch 2501, which is located at the end of the injection door assembly 20. When the fully open limit switch 2501 contacts the first abutment protrusion 23, the injection door assembly 20 is in a fully open state. The purpose of setting the fully open limit switch 2501 is to indicate that the injection door assembly 20 is in a fully open state. At this time, the second abutment protrusion 24 contacts the fully open limit switch 2501, and the open state limit switch 2401 contacts the first abutment protrusion 23.

[0035] Preferably, the closed-state limit switch 2301 is located between the open-state limit switch 2401 and the fully open limit switch 2501. The electric safety door transmission structure of the injection molding machine also includes a drive component 30 and a transmission belt 31. The drive component 30 drives the transmission belt 31 to move. The injection molding door assembly 20 is provided with a fixed end 25, and the transmission belt 31 is fixedly connected to the fixed end 25. The entire device has a high degree of automation, a novel structure, ingenious design, strong applicability, and is easy to promote.

[0036] Preferably, the electric safety door transmission structure of the injection molding machine further includes a shielding protection component, which is located above the closed-state limit switch 2301 and the open-state limit switch 2401. The purpose of providing the shielding protection component is to conceal the electric structure and improve safety performance.

[0037] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A transmission structure for an electric safety door of an injection molding machine, comprising a base assembly, an injection door assembly, a closed state limit switch, and an open state limit switch, characterized in that: The injection-molded door assembly is provided with a first abutting protrusion corresponding to the limit switch in the closed state and a second abutting protrusion corresponding to the limit switch in the open state; The injection-molded door assembly is slidably installed on the base assembly. The closed state limit switch and the open state limit switch are connected to the injection control terminal. When the open state limit switch transmits an open state signal to the injection control terminal, the injection control terminal stops working. The base assembly includes an upper guide rail and a lower guide rail located below the upper guide rail. The injection-molded door assembly is provided with an upper guide wheel and a lower guide wheel. The upper guide wheel is slidably installed on the upper guide rail, and the lower guide wheel is slidably installed on the lower guide rail. The electric safety door transmission structure of the injection molding machine also includes a fully open limit switch, which is located at the end of the injection door assembly. When the fully open limit switch contacts the first abutment protrusion, the injection door assembly is in a fully open state. The closed limit switch is located between the open limit switch and the fully open limit switch.

2. The electric safety door transmission structure for injection molding machines as described in claim 1, characterized in that: The extension direction of the upper guide rail is parallel to the extension direction of the lower guide rail.

3. The electric safety door transmission structure for injection molding machines as described in claim 1, characterized in that: There are two limit switches in both the closed and open states.

4. The electric safety door transmission structure for injection molding machines as described in claim 1, characterized in that: The second abutment protrusion is elongated, and its end has an inclined end face.

5. The electric safety door transmission structure for injection molding machines as described in claim 4, characterized in that: The second abutment protrusion extends in a direction parallel to the extension direction of the base assembly.

6. The electric safety door transmission structure for injection molding machines as described in claim 1, characterized in that: The electric safety door transmission structure of the injection molding machine also includes a drive component and a transmission belt. The drive component drives the transmission belt to move. The injection molding door assembly is provided with a fixed end, and the transmission belt is fixedly connected to the fixed end.

7. The electric safety door transmission structure for injection molding machines as described in claim 1, characterized in that: The electric safety door transmission structure of the injection molding machine also includes a shielding protection component, which is located above the closed state limit switch and the open state limit switch.

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