CN212552590U

CN212552590U - Steel bushing press fitting device for plastic part

Info

Publication number: CN212552590U
Application number: CN202020393024.9U
Authority: CN
Inventors: 章富贵
Original assignee: Roechling Automotive Parts Kunshan Co ltd
Current assignee: Roechling Automotive Parts Kunshan Co ltd
Priority date: 2020-03-25
Filing date: 2020-03-25
Publication date: 2021-02-19
Anticipated expiration: 2030-03-25

Abstract

The utility model provides a steel bushing press fitting device for plastic parts, which comprises an upper pressing mechanism and an upper jacking mechanism matched with the upper pressing mechanism, wherein the upper pressing mechanism comprises a centering rod arranged in a shell, the upper end of the upper pressing mechanism is connected with an upper air cylinder, an upper pressing plate seat is sleeved outside the lower end of the upper pressing mechanism, a guide sleeve is arranged between the upper pressing plate seat and the centering rod, and an O-shaped ring is arranged between the guide sleeve and the centering rod; the upper ejection mechanism comprises a lower ejector rod with the top in a convex arrangement, the lower ejector rod is connected with a cylinder arranged below the lower ejector rod through a base, the bottom of the lower ejector rod is arranged in the base, a lower ejector rod fixing seat is sleeved in the middle of the lower ejector rod, and an O-shaped ring is arranged between the lower ejector rod fixing seat and the lower ejector rod. The utility model discloses a device can ensure to the great product of injection molding hole site degree deviation, its steel bushing can the pressure equipment smoothly target in place to reduced because the steel bushing pressure does not advance the machine time that causes, improved rate of equipment utilization, simultaneously, its pressure equipment product percent of pass is high, satisfies the required quality.

Description

Steel bushing press fitting device for plastic part

Technical Field

The utility model relates to a steel bushing pressure equipment device for working of plastics.

Background

In order to increase the strength of the injection molding part assembling hole, a steel sleeve is required to be pressed in the hole after injection molding. The existing steel bushing press-fitting device is shown in figures 1-2, a steel bushing 3 is sleeved at the head of an ejector rod 2, a product 4 is arranged on a product fixing plate 1, a hole of the product is ensured to be right above the steel bushing, a jig descends, an upper pressure rod 6 presses the product 4 downwards, an air cylinder connected with the bottom of the ejector rod moves the ejector rod towards the upper pressure rod 6 until the ejector rod 2 extends out of the steel bushing 3 and then is pressed into a corresponding product hole. Generally, the lower bottom plate and the product fixing plate 1 are fixed, the upper bottom plate and the lower bottom plate are supported by a plane bearing, a radial gap is reserved between a lower plate mounting bush and an upper bottom plate mounting hole, and the gap size B between the ejector rod 2 and the ejector rod guide bush 5 is smaller than the steel sleeve chamfer size A. Therefore, when the deviation of the position degree of the upper hole of the product is less than or equal to B, the ejector rod 2 can self-adaptively align the hole position and smoothly press-fit into the steel sleeve.

However, for some injection molded parts with larger sizes, the shrinkage deformation is large after the injection molding of the product, and the position degree of the measuring hole of the injection molded part can also cause the product deviation, so that the existing mechanism can not ensure that the steel sleeve is accurately pressed into the hole. For example, a PP container with a dimension of 875mm by 293mm by 183mm in length, width and height will experience a large shrinkage deformation after injection molding, and will actually measure a deviation of +/-1.5mm in hole position. The product chamfer size is 0.45, steel bushing chamfer size 0.2, and the chamfer size is far less than the hole position degree deviation, so current mechanism can't guarantee the steel bushing pressure equipment downthehole.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects of the prior art, the utility model provides a steel bushing pressure equipment device for working of plastics.

The purpose of the utility model is realized through the following technical scheme:

the steel sleeve press-fitting device for the plastic part comprises an upper pressing mechanism and an upper jacking mechanism, wherein the upper jacking mechanism is matched with the upper pressing mechanism and arranged below the upper pressing mechanism;

the upper ejection mechanism comprises a lower ejector rod with the top in a convex arrangement, the lower ejector rod is connected with a cylinder arranged below the lower ejector rod through a base, the bottom of the lower ejector rod is arranged in the base, a lower ejector rod fixing seat is sleeved in the middle of the lower ejector rod, an O-shaped ring is arranged between the lower ejector rod fixing seat and the lower ejector rod, and the cylinder moves to drive the lower ejector rod to move up and down.

Preferably, a floating joint is arranged between the centering rod and the upper cylinder.

Preferably, the upper and lower parts of the guide sleeve are respectively provided with a plane bearing which is abutted against the upper pressure plate seat and the centering rod.

Preferably, a press-fitting groove is formed in the head of the centering rod, and an outer ring of the press-fitting groove is chamfered.

Preferably, the upper part of the lower ejector rod fixing seat is abutted with the lower ejector rod through a plane bearing, and the plane bearing is arranged below the lower ejector rod fixing seat.

Preferably, the top of lower ejector pin is the chamfer setting, just the chamfer is greater than to well core rod's chamfer.

Preferably, the diameter of the top of the lower ejector rod is smaller than the inner diameter of the press-fitting groove, and the top of the lower ejector rod is in clearance fit with the press-fitting groove.

Preferably, two O-shaped rings are arranged on the pair of central rods and the upper ejector rod.

Preferably, the chamfer angle of the centering rod is larger than the position deviation of the product hole to be pressed, and the chamfer angle of the upper ejector rod is larger than the position deviation of the product hole.

Preferably, the plane bearing is provided with only one cover plate, the cover plate is provided with a groove, and a ball is embedded in the groove.

The beneficial effects of the utility model are embodied in: the device can ensure that the steel sleeve can be smoothly pressed and installed in place for a product with large deviation of the position degree of the injection molding piece hole, so that the machine halt time caused by the fact that the steel sleeve is not pressed is reduced, the equipment utilization rate is improved, and meanwhile, the qualified rate of pressed and installed products is high, and the quality requirement is met.

Drawings

FIG. 1: the structure of the prior art is schematic.

FIG. 2: fig. 1 is a partial schematic view of the structure.

FIG. 3: the utility model discloses go up pressure mechanism spatial structure sketch map.

FIG. 4: the utility model discloses go up pressure mechanism section structure sketch map.

FIG. 5: the utility model discloses go up a mechanism spatial structure sketch map.

FIG. 6: the utility model discloses go up top mechanism section structure sketch map.

FIG. 7: the utility model discloses a plane bearing structure elevation.

FIG. 8: the cross-sectional view taken along line A-A of FIG. 7.

FIG. 9: the utility model discloses structural schematic when specifically implementing.

Detailed Description

The utility model discloses a steel bushing pressure equipment device for working of plastics, combine fig. 3-9 to show, including last pressing means and with go up the cooperation of pressing means, set up in last top mechanism of last pressing means below. Go up the centering rod 1 that the pressure mechanism package set up in the casing, a pressure equipment groove has been seted up to centering rod 1's head, the outer lane in pressure equipment groove is the chamfer setting, the utility model discloses in, the chamfer adopts 1.5mm, the groove footpath in pressure equipment groove is with treating that the aperture on the pressure equipment product is equivalent.

The upper end of the centering rod 1 is connected with the upper cylinder 2 through the floating joint 3, and the lower end of the centering rod 1 is sleeved with the guide sleeve 7 and the upper pressure plate seat 8 respectively. The air cylinder 2 drives the center rod 1 to move up and down in the upper pressure plate seat 8, so that a certain gap is compressed and released through the O-shaped rings 6. In order to reduce the friction resistance to radial deviation when the central rod 1 moves, the upper part and the lower part of the guide sleeve 7 are respectively provided with a plane bearing 5 which is abutted against the upper pressure plate seat 8 and the central rod 1. An upper pressure plate 9 is arranged below the upper pressure plate seat 8. For the displacement change that the pressfitting product in-process produced among the cooperation technical scheme, planar bearing 13 has carried out corresponding improvement, and it includes a gland 131, seted up the recess on gland 131, the recess embeds is equipped with ball 132.

Go up top mechanism and include that the top is the lower ejector pin 11 of convex setting, the top of lower ejector pin 11 is the chamfer setting, just the chamfer is greater than the chamfer to well core rod. In this embodiment, the chamfer is 2.0 mm. The convex head is used for placing the steel sleeve 15. The diameter of the top of the lower ejector rod is smaller than the inner diameter of the press-fitting groove, and the sum of the diameter of the top and the thickness of the steel sleeve is equal to the aperture of the product to be press-fitted. The lower ejector rod 11 is connected with a cylinder 17 arranged below the lower ejector rod 11 through a base 16, and a cylinder shaft of the cylinder 17 is connected with the bottom of the base 16. Specifically, the bottom of the lower ejector rod 11 is arranged in the base 16, a lower ejector rod fixing seat 12 is arranged above the base 16, and the lower ejector rod fixing seat 12 is sleeved in the middle of the lower ejector rod 11. A lower ejector rod O-shaped ring 14 is arranged between the lower ejector rod fixing seat 12 and the lower ejector rod 11, and the air cylinder 17 moves to drive the base and the whole lower ejector rod 11 to move up and down. Similarly, in order to ensure the sealing performance and release the gap during movement, two lower ejector rod O-shaped rings 14 are arranged. The thrust of the cylinder of the upper jacking mechanism is greater than that of the upper cylinder of the upper pressing mechanism.

And lower ejector rod plane bearings 13 are arranged above and below the lower ejector rod fixing seat 12. Wherein, the upper lower top rod plane bearing 13 is abutted with the upper part of the lower top rod 13, and the lower top rod plane bearing 13 is arranged in the base 16.

The press-fitting process of the present invention will be explained below with reference to fig. 7;

in operation, the steel sleeve 15 is arranged at the head of the lower mandril 11, and at the moment, the air cylinder is in a retraction state. The product 10 is placed on the apparatus with the product hole above the lower ejector pin 11. The upper cylinder 2 drives the centering rod 1 to move, and the centering rod 1 is inserted into a product hole through chamfer guiding. The O-shaped ring on the centering rod is ensured to be in the center of the guide sleeve when the centering rod is initially inserted into the product hole, and when the centering rod is inserted into the product hole, the O-shaped ring can be easily compressed to release a gap. Two plane bearings in the pressing mechanism reduce the friction resistance to radial deviation of the centering rod, ensure that the centering rod is smoothly inserted into the product hole, and ensure that the product hole and the centering rod are coaxial.

After the centering rod is in place, the air cylinder moves to drive the lower ejector rod to firstly enter the press-fitting groove of the centering rod, and the upper ejection mechanism is also provided with two O-shaped rings and a plane bearing, so that the action is consistent with that of the upper ejection mechanism, and the lower ejector rod is ensured to be smoothly inserted into the press-fitting groove of the centering rod and to be concentric. The aim of aligning the steel sleeve and the product hole to the center is finally achieved through the alignment conversion of the center rod. Because the thrust of the upper ejection mechanism cylinder is greater than that of the upper pressing mechanism, the lower ejection rod continuously moves upwards to push the center rod to ascend until the steel sleeve is completely pressed into the product hole.

Meanwhile, the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. Steel bushing pressure equipment device for the working of plastics, its characterized in that: the pneumatic pressing mechanism comprises an upper pressing mechanism and an upper jacking mechanism which is matched with the upper pressing mechanism and arranged below the upper pressing mechanism, wherein the upper pressing mechanism comprises a centering rod arranged in a shell, the upper end of the centering rod is connected with an upper air cylinder, an upper pressing plate seat is sleeved outside the lower end of the centering rod, a guide sleeve is arranged between the upper pressing plate seat and the centering rod, an O-shaped ring is arranged between the guide sleeve and the centering rod, and the upper air cylinder drives the centering rod to move up and down in the upper pressing plate seat;

2. A steel bushing press-fitting device for plastic members as claimed in claim 1, wherein: and a floating joint is arranged between the centering rod and the upper cylinder.

3. A steel bushing apparatus for plastic members as claimed in claim 2, wherein: and the upper part and the lower part of the guide sleeve are respectively provided with a plane bearing, an upper pressure plate seat and a centering rod which are abutted.

4. A steel bushing press-fitting device for plastic members as claimed in claim 1, wherein: a press-fitting groove is formed in the head of the centering rod, and the outer ring of the press-fitting groove is in a chamfer shape.

5. A steel bushing apparatus for plastic members as claimed in claim 4, wherein: the upper part of the lower ejector rod fixing seat is abutted with the lower ejector rod through a plane bearing, and the plane bearing is arranged below the lower ejector rod fixing seat.

6. A steel bushing apparatus for plastic members as claimed in claim 5, wherein: the top of ejector pin is the chamfer setting down, just the chamfer is greater than the chamfer to well core rod.

7. A steel bushing apparatus for plastic members as claimed in claim 5, wherein: the diameter of the top of the lower ejector rod is smaller than the inner diameter of the press mounting groove, and the top of the lower ejector rod is in clearance fit with the press mounting groove.

8. A steel bushing device for plastic members as claimed in claim 3, wherein: and two O-shaped rings are arranged on the centering rod and the lower ejector rod.

9. A steel bushing device for plastic members as claimed in claim 3, wherein: the chamfer angle of the centering rod is larger than the position deviation of the product hole to be pressed, and the chamfer angle of the lower ejector rod is larger than the position deviation of the product hole.

10. A steel bushing apparatus for plastic members as claimed in claim 5, wherein: the flat bearing is provided with only one cover plate, the cover plate is provided with a groove, and a ball is embedded in the groove.