Improved structure of driving of injection mold barb part stripping slider

Abstract

The utility model relates to injection mold design technical field, concretely relates to a kind of driving improvement structure of injection mold barb part stripping slide block, including the movable mould of injection mold, mobile setting on the movable mould for the stripping slide block of injection part barb part stripping, fixedly setting on the stripping drive cylinder of stripping slide block, the oil cylinder containing groove of the housing for accommodating the stripping drive cylinder being set on the movable mould, the seat block of the front end of piston rod of stripping drive cylinder being fixedly set on the movable mould and being opposite to the front end of piston rod of stripping drive cylinder Setting, the front end of piston rod of stripping drive cylinder is fixedly connected with the seat block.The utility model improves the stress condition of stripping drive cylinder, improves the reliability and service life of stripping drive cylinder work.

Description

Technical Field

[0001] This utility model relates to the field of injection mold design technology, specifically to an improved drive structure for the demolding slider of the undercut part of an injection mold. Background Technology

[0002] Injection molds are molds used for plastic injection molding, primarily for manufacturing plastic products of various shapes and sizes. They are created by injecting molten plastic into the cavity of the mold, which then cools and solidifies to form the desired product. Injection molds play a crucial role in manufacturing and are widely used in the automotive, medical device, electronics, home appliance, and aerospace industries.

[0003] The structure of an injection mold mainly includes the moving mold, the fixed mold, the gating system, and the cooling water system. For example... Figure 3 The diagram shows the moving mold 1 of an injection mold for a certain injection molded part. The moving mold 1 is equipped with a demolding slider 3 for disengaging the undercut portion 2 of the injection molded part. A demolding drive cylinder is fixed to the moving mold. The piston rod 7 of the demolding drive cylinder is connected to a cantilevered seat 8 at its front end. The cantilever end of the cantilevered seat 8 is fixed to the right end face of the demolding slider 3 by bolts. During demolding, the piston rod 7 of the demolding drive cylinder fixed to the moving mold actuates, causing the cantilevered seat 8 to move to the right, thereby causing the demolding slider to move to the right and disengage from the undercut portion 2.

[0004] However, the above-mentioned drive structure of the ejector slider of the injection mold bar has the following shortcomings: the ejection force used to push the ejector slider to move is indirectly applied to the piston rod of the ejector drive cylinder through the cantilevered seat block. The piston rod will be subjected to a large torque force, which deteriorates the stress condition of the piston rod and leads to a high failure rate of the ejector drive cylinder, thereby reducing the reliability and service life of the ejector drive cylinder. Utility Model Content

[0005] To address the aforementioned problems, this utility model proposes an improved drive structure for the demolding slider of the undercut portion of an injection mold, aiming to improve the force distribution on the demolding drive cylinder and enhance its reliability and service life. The specific technical solution is as follows:

[0006] An improved drive structure for a demolding slider of a barb portion of an injection mold includes a moving mold, a demolding slider movably disposed on the moving mold for disengaging the barb portion of the injection molded part, a demolding drive cylinder fixedly disposed on the demolding slider, a cylinder receiving groove disposed on the moving mold for accommodating the housing of the demolding drive cylinder, and a seat block fixedly disposed on the moving mold and disposed opposite to the front end of the piston rod of the demolding drive cylinder, wherein the front end of the piston rod of the demolding drive cylinder is fixedly connected to the seat block.

[0007] In this invention, the moving mold is provided with a sliding support surface for mounting the demolding slider, and the demolding slider is movable in the left-right direction on the sliding support surface of the moving mold.

[0008] Preferably, the housing of the demolding drive cylinder is fixed to the rear side of the demolding slider and placed in the cylinder receiving groove of the moving mold.

[0009] Preferably, the piston rod of the demolding drive cylinder is fixed to a cylindrical locking block by bolts, and the outer circle of the cylindrical locking block is provided with an annular groove; a pair of clamps are fixedly provided on the seat block, and the annular groove of the cylindrical locking block is engaged between the pair of clamps of the seat block.

[0010] Preferably, the cylindrical locking block is provided with a limiting plane, and a limiting baffle for abutting the upper limiting plane of the cylindrical locking block is fixed to the seat block next to the pair of calipers by screws.

[0011] Preferably, the two sides of the housing of the demolding drive cylinder are movable in the left-right direction and are arranged on the cylinder receiving groove of the moving mold.

[0012] In this invention, the barb portion of the injection molded part is located between the cavity surface of the upper left end of the moving mold and the cavity surface of the upper left end of the demolding slider.

[0013] In this invention, the cylinder receiving groove on the moving mold is formed on the sliding support surface of the moving mold and extends to the right side of the moving mold in the left-right direction; the seat block is disposed at the opening of the cylinder receiving groove on the right side of the moving mold.

[0014] Preferably, a guide rail is provided between the moving mold and the demolding slider in the left-right direction, and the demolding slider is moved along the guide rail in the left-right direction on the sliding support surface of the moving mold.

[0015] In this invention, the cavity surface on the moving mold includes a fixed mold matching cavity surface that matches the fixed mold cavity surface of the injection mold, and a slider matching cavity surface that matches the cavity surface of the demolding slider.

[0016] The working principle of this utility model is as follows: after the injection mold is opened, the demolding drive cylinder is activated, causing the piston rod of the demolding drive cylinder to retract, thereby driving the housing of the demolding drive cylinder together with the demolding slider to move towards the seat block, thereby causing the barb part of the injection molded part to be disengaged.

[0017] The beneficial effects of this utility model are:

[0018] First, the improved drive structure for the demolding slider of the undercut part of the injection mold of this utility model improves the stress condition of the piston rod of the demolding drive cylinder by improving the installation and connection structure of the demolding drive cylinder. This overcomes the drawback of the previous demolding drive cylinder installation and connection structure having a large torque force on the piston rod of the demolding drive cylinder, thereby improving the reliability and service life of the demolding drive cylinder.

[0019] Secondly, the improved drive structure of the demolding slider of the undercut part of the injection mold of this utility model makes the demolding drive cylinder easy and quick to install and the demolding slider has good movement stability. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of an improved drive structure for a demolding slider of a barbed part of an injection mold according to the present invention;

[0021] Figure 2 yes Figure 1 A three-dimensional structural diagram;

[0022] Figure 3 This is a schematic diagram of the drive structure of the ejector slider in the barbed part of a conventional injection mold.

[0023] In the diagram: 1. Moving mold, 2. Barb, 3. Demolding slider, 4. Demolding drive cylinder, 5. Housing of the demolding drive cylinder, 6. Cylinder receiving groove, 7. Piston rod of the demolding drive cylinder, 8. Seat block, 9. Sliding support surface, 10. Bolt, 11. Cylindrical locking block, 12. Annular locking groove, 13. Caliper, 14. Limiting plane, 15. Screw, 16. Limiting baffle, 17. Groove, 18. Guide rail, 19. Cavity surface on the moving mold, 20. Pairing cavity surface on the fixed mold, 21. Cavity surface of the demolding slider, 22. Pairing cavity surface of the slider. Detailed Implementation

[0024] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0025] like Figures 1 to 3 The illustration shows an embodiment of an improved drive structure for a demolding slider of a barbed part in an injection mold according to the present invention. It includes a moving mold 1 of the injection mold, a demolding slider 3 movably disposed on the moving mold 1 for disengaging the barbed part 2 of the injection molded part, a demolding drive cylinder 4 fixedly disposed on the demolding slider 3, a cylinder receiving groove 6 disposed on the moving mold 1 for accommodating the housing 5 of the demolding drive cylinder, and a seat block 8 fixedly disposed on the moving mold 1 and directly opposite the front end of the piston rod 7 of the demolding drive cylinder. The front end of the piston rod 7 of the demolding drive cylinder is fixedly connected to the seat block 8.

[0026] In this embodiment, the moving mold 1 is provided with a sliding support surface 9 for mounting the demolding slider 3, and the demolding slider 3 is movably mounted on the sliding support surface 9 of the moving mold 1 in the left-right direction.

[0027] Preferably, the housing 5 of the demolding drive cylinder is fixed to the rear side of the demolding slider 3 and placed in the cylinder receiving groove 6 of the moving mold 1.

[0028] Preferably, the piston rod 7 of the demolding drive cylinder is fixed to a cylindrical locking block 11 by bolts 10, and an annular groove 12 is provided on the outer circle of the cylindrical locking block 11; a pair of clamps 13 are fixedly provided on the seat block 8, and the annular groove 12 of the cylindrical locking block 11 is engaged between the pair of clamps 13 of the seat block 8.

[0029] Preferably, the cylindrical locking block 11 is provided with a limiting plane 14, and a limiting baffle 16 for abutting against the upper limiting plane 14 of the cylindrical locking block 11 is fixed to the seat block 8 next to the pair of calipers 13 by screws 15.

[0030] Preferably, the housing 5 of the demolding drive cylinder is movably disposed on the cylinder receiving groove 6 of the moving mold 1 on both sides in the left-right direction.

[0031] In this embodiment, the barb portion 2 of the injection molded part is located between the cavity surface of the upper left end of the moving mold 1 and the cavity surface of the upper left end of the demolding slider 3.

[0032] In this embodiment, the cylinder receiving groove 6 on the moving mold 1 is formed on the sliding support surface 9 of the moving mold 1 and extends to the right side of the moving mold 1 in the left-right direction; the seat block 8 is located at the slot 17 of the cylinder receiving groove 6 on the right side of the moving mold 1.

[0033] Preferably, a guide rail 18 is provided between the moving mold 1 and the demolding slider 3 in the left-right direction, and the demolding slider 3 is moved along the sliding support surface 9 of the moving mold 1 via the guide rail 18 in the left-right direction.

[0034] In this embodiment, the cavity surface 19 on the moving mold includes a fixed mold matching cavity surface 20 that matches the fixed mold cavity surface of the injection mold, and a slider matching cavity surface 22 that matches the cavity surface 21 of the demolding slider.

[0035] The working principle of this embodiment is as follows: After the injection mold is opened, the demolding drive cylinder 3 is activated, causing the piston rod 7 of the demolding drive cylinder to retract, thereby driving the housing 5 of the demolding drive cylinder together with the demolding slider 3 to move towards the seat block 8, thereby causing the barb part 2 of the injection molded part to be disengaged.

[0036] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. An improved driving structure for a release slider on a barbed part of an injection mold, characterized in that, The mold includes a moving mold of an injection mold, a demolding slider movably disposed on the moving mold for disengaging the undercut portion of the injection molded part, a demolding drive cylinder fixedly disposed on the demolding slider, a cylinder receiving groove disposed on the moving mold for accommodating the housing of the demolding drive cylinder, and a seat block fixedly disposed on the moving mold and facing the front end of the piston rod of the demolding drive cylinder, wherein the front end of the piston rod of the demolding drive cylinder is fixedly connected to the seat block.

2. The improved driving structure for the ejector slider of the undercut portion of an injection mold according to claim 1, characterized in that, The moving mold is provided with a sliding support surface for mounting the demolding slider, and the demolding slider is movable in the left and right direction on the sliding support surface of the moving mold.

3. The improved driving structure for the ejector slider of the undercut part of an injection mold according to claim 1, characterized in that, The housing of the demolding drive cylinder is fixed to the rear side of the demolding slider and placed in the cylinder receiving groove of the moving mold.

4. The improved driving structure for the ejector slider of the undercut portion of an injection mold according to claim 1, characterized in that, The piston rod of the demolding drive cylinder is fixed to a cylindrical locking block by bolts at its front end. The outer circle of the cylindrical locking block is provided with an annular locking groove. A pair of clamps are fixedly provided on the seat block, and the annular locking groove of the cylindrical locking block is engaged between the pair of clamps of the seat block.

5. The improved driving structure for the ejector slider of the undercut portion of an injection mold according to claim 4, characterized in that, The cylindrical locking block is provided with a limiting plane, and a limiting baffle is fixed to the seat block next to the pair of calipers by screws to abut against the upper limiting plane of the cylindrical locking block.

6. The improved driving structure for the ejector slider of the undercut portion of an injection mold according to claim 1, characterized in that, The housing of the demolding drive cylinder is mounted on the cylinder receiving groove of the moving mold, with its two sides moving in the left and right direction.

7. The improved driving structure for the ejector slider of the undercut portion of an injection mold according to claim 2, characterized in that, The barb portion of the injection molded part is located between the cavity surface of the upper left end of the moving mold and the cavity surface of the upper left end of the demolding slider.

8. The improved driving structure for the ejector slider of the undercut portion of an injection mold according to claim 7, characterized in that, The cylinder receiving groove on the moving mold is formed on the sliding support surface of the moving mold and extends to the right side of the moving mold in the left-right direction; the seat block is located at the opening of the cylinder receiving groove on the right side of the moving mold.

9. The improved driving structure for the ejector slider of the undercut portion of an injection mold according to claim 8, characterized in that, A guide rail is provided between the moving mold and the demolding slider in the left-right direction, and the demolding slider is moved along the guide rail in the left-right direction and is disposed on the sliding support surface of the moving mold.

10. The improved driving structure for the ejector slider of the undercut portion of an injection mold according to claim 9, characterized in that, The cavity surfaces on the moving mold include fixed mold-matching cavity surfaces that match the fixed mold cavity surfaces of the injection mold, and slider-matching cavity surfaces that match the cavity surfaces of the demolding slider.

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