Locking structure of injection molding machine

Abstract

The utility model relates to a locking structure of an injection molding machine, the locking structure comprises a positioning hole groove and a positioning pin which are arranged on a turntable or a sliding plate, the positioning pin is arranged below the turntable or the sliding plate, and the positioning pin is inserted into the positioning hole groove to pin the turntable or the sliding plate and retreats from the positioning hole groove to loosen the turntable or the sliding plate; an inductive switch is installed below the turntable or the sliding plate and connected with a driving device of the turntable or the sliding plate, an inductive block is installed on the positioning pin, and when the positioning pin retreats from the positioning groove hole, the inductive block triggers the inductive switch, and the inductive switch unlocks the driving device of the turntable or the sliding plate. The design is reasonable, the structure is simple, and damage caused by collision between the turntable or the sliding plate and the positioning pin is effectively avoided.

Description

Technical Field

[0001] This utility model relates to injection molding machines, and more specifically to a locking structure for injection molding machines. Background Technology

[0002] Existing injection molding machines (rotary and slide types) rely on the cooperation of locating pins and locating slots to lock the rotary or slide type. There is a problem that the locating pins may not be fully disengaged from the locating slots. Once the locating pins are not fully disengaged from the locating slots, some of the locating pins will remain in the locating slots. If the rotary or slide moves at this time, it will collide with the locating pins and cause damage. Utility Model Content

[0003] This invention proposes a locking structure for injection molding machines, aiming to solve the above-mentioned problems.

[0004] The technical solution of this utility model:

[0005] A locking structure for an injection molding machine includes a positioning hole slot and a positioning pin disposed on a turntable or slide plate. The positioning pin is installed below the turntable or slide plate; it is inserted into the positioning hole slot to lock the turntable or slide plate, and released from the positioning hole slot to release the turntable or slide plate. A sensor switch is installed below the turntable or slide plate and connected to the drive device of the turntable or slide plate. A sensor block is installed on the positioning pin. When the positioning pin exits the positioning hole, the sensor block triggers the sensor switch, and the sensor switch unlocks the drive device of the turntable or slide plate. Thus, the drive device of the turntable or slide plate can only be activated after the positioning pin exits the positioning hole (is in position), allowing the turntable or slide plate to move, effectively preventing collisions.

[0006] To further refine the above technical solution, the sensing block is located at the end of the positioning pin and is threadedly connected to the positioning pin; thus, the height of the sensing block can be adjusted.

[0007] To further refine the above technical solution, a protective cover is installed on the inductive switch.

[0008] Further refining the above technical solution, a hydraulic cylinder is built into the lower template, and the positioning pin is the piston rod of the hydraulic cylinder, which is driven by the hydraulic cylinder to move, insert or withdraw from the positioning hole slot; making the overall structure more compact.

[0009] Further refining the above technical solution, one end cap is fixed on the lower template and located below the lower template, and the hydraulic cylinder is integrated with the lower template and the end cap.

[0010] The advantages of this utility model are that it has a reasonable design, simple structure, and effectively avoids collisions between the turntable or slide plate and the positioning pin, thus preventing damage. Attached Figure Description

[0011] Figure 1This is a schematic diagram of a partial structure of a rotary injection molding machine (a cross-section of the locking structure).

[0012] Figure 2 This is a schematic diagram of a partial structure of a slide-type injection molding machine (a cross-section of the locking structure).

[0013] In the diagram, 1 is a turntable, 2 is a positioning pin, 3 is an induction switch, 4 is a lower template, 5 is an induction block, 6 is a hydraulic cylinder, 7 is an end cover, 8 is an upper slide plate, 9 is a lower slide plate, and 10 is a protective cover. Detailed Implementation

[0014] Example

[0015] like Figure 1 As shown, a rotary injection molding machine employs a locking structure including a positioning hole groove and a positioning pin 2 on the rotary table 1. The positioning pin 2 is installed below the rotary table 1. When it is inserted into the positioning hole groove, it locks the rotary table 1; when it is removed from the positioning hole groove, it releases the rotary table 1. A sensor switch 3 is installed below the rotary table 1 (fixed on the lower template 4 and placed in a groove on the lower template 4) and connected to the drive device of the rotary table 1. A sensor block 5 is installed on the positioning pin 2. When the positioning pin 2 is removed from the positioning hole groove 2, the sensor block 5 triggers the sensor switch 3, and the sensor switch 3 unlocks the drive device of the rotary table 1.

[0016] The sensing block 5 is located at the end of the positioning pin 2 and is threadedly connected to the positioning pin 2.

[0017] The hydraulic cylinder 6 is built into the lower template 4. The positioning pin 2 is the piston rod of the hydraulic cylinder 6, which is driven by the hydraulic cylinder 6 to move, insert or exit the positioning hole slot. The end cover 7 is fixed on the lower template 4 and located below the lower template 4. The hydraulic cylinder 6, the lower template 4 and the end cover 7 are integrated.

[0018] Example

[0019] like Figure 2 As shown, a sliding plate injection molding machine employs a locking structure including a positioning hole groove and a positioning pin 2 on the upper sliding plate 8. The positioning pin 2 is installed below the upper sliding plate 8. When it is inserted into the positioning hole groove, it locks the upper sliding plate 8; when it is removed from the positioning hole groove, it releases the upper sliding plate 8. A sensor switch 3 is installed below the upper sliding plate 8 (fixed on the lower sliding plate 9 and falling into a groove on the lower sliding plate 9) and connected to the drive device of the upper sliding plate 8. A sensor block 5 is installed on the positioning pin 2. When the positioning pin 2 is removed from the positioning hole 2, the sensor block 5 triggers the sensor switch 3, and the sensor switch 3 unlocks the drive device of the upper sliding plate 8.

[0020] The sensing block 5 is located at the end of the positioning pin 2 and is threadedly connected to the positioning pin 2.

[0021] A protective cover 10 is installed on the induction switch 3;

[0022] The hydraulic cylinder 6 is built-in installed in the lower die plate 4, the positioning pin 2 is the piston rod of the hydraulic cylinder 6, and the positioning pin 2 is driven to move, insert or exit the positioning hole groove by the hydraulic cylinder 6; the end cover 7 is fixed on the lower die plate 4 and located below the lower die plate 4, and the hydraulic cylinder 6 is integrated with the lower die plate 4 and the end cover 7.

[0023] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A locking structure for an injection molding machine, the locking structure comprising a positioning hole groove and a positioning pin disposed on a turntable or slide plate, the positioning pin being installed below the turntable or slide plate, wherein the positioning pin is inserted into the positioning hole groove to lock the turntable or slide plate, and is released from the positioning hole groove to release the turntable or slide plate; characterized in that, A sensor switch is installed below a turntable or slide plate and connected to the drive device of the turntable or slide plate. A sensor block is installed on a positioning pin. When the positioning pin exits the positioning slot, the sensor block triggers the sensor switch, and the sensor switch unlocks the drive device of the turntable or slide plate.

2. The injection molding machine locking structure according to claim 1, characterized in that, The sensing block is located at the end of the positioning pin and is threadedly connected to the positioning pin.

3. The injection molding machine locking structure according to claim 1, characterized in that, The inductive switch is equipped with a protective cover.

4. The injection molding machine locking structure according to claim 1, characterized in that, A hydraulic cylinder is built into the lower template. The positioning pin is the piston rod of the hydraulic cylinder, which is driven by the hydraulic cylinder to move, insert or withdraw from the positioning hole groove.

5. The injection molding machine locking structure according to claim 4, characterized in that, One end cap is fixed on the lower template and located below the lower template. The hydraulic cylinder is integrated with the lower template and the end cap.

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