CN112276528A

CN112276528A - Automatic assembling method for sheath hose

Info

Publication number: CN112276528A
Application number: CN202011123164.5A
Authority: CN
Inventors: 陈永刚; 张健彬
Original assignee: NANJING LEIERWEI NEW TECHNOLOGY CO LTD
Current assignee: NANJING LEIERWEI NEW TECHNOLOGY CO LTD
Priority date: 2020-10-20
Filing date: 2020-10-20
Publication date: 2021-01-29
Anticipated expiration: 2040-10-20
Also published as: CN112276528B

Abstract

The invention discloses an automatic assembling method of a sheath hose, which adopts a flow line of a program control device to realize automatic operation of sleeve assembling, joint assembling and buckling detection, replaces manpower, reduces labor intensity, improves product quality, can switch tools with different sizes, meets the assembling requirements among products with different specifications such as a joint, a sleeve, a sheath hose and the like, has expandable applicability and compatibility, improves production efficiency, effectively tightens and stretches a stainless steel wire sheath with two explosion ports, is easier to assemble with the sleeve, is easy to prick a steel wire, and effectively controls the quality problem that the stainless steel wire sheath is not assembled in place.

Description

Automatic assembling method for sheath hose

Technical Field

The invention belongs to the technical field of machining, and particularly relates to a design of an automatic assembly line.

Background

The buckling connection type metal sheath rubber hose is a metal hose used for a railway passenger car braking system, plays a role in protecting the braking safety of vehicles, has higher requirements on the assembly of products, and directly influences the strength and the service life of the products by the quality of the assembly. The existing assembly mode of the metal sheath rubber hose mostly adopts manual assembly and manual operation to carry out sleeve buckling and pressing so as to meet the customer requirements of multiple specifications and multiple types of products for alternative production.

The manual assembly and the withholding are realized by manually loading the sleeve into the two ends of the rubber hose with the sheath, loading the joints into the two ends of the rubber hose and placing the rubber hose into a withholding machine for withholding. In the production process, the buckling and pressing of the sleeve and the rubber pipe, the joint and the rubber pipe and the sleeve are manually installed in place, are assembled in batches and are uniformly sent to a buckling and pressing machine for buckling and pressing. In the moving process, the preassembled parts can be loosened and need to be confirmed again before buckling, so that the product percent of pass is ensured. The buckling is to manually place the preassembled product on a buckling machine, the position is determined by visual inspection, the buckling uniformity of the product is unstable, and appearance defects such as sleeve appearance deformation, pressure deviation, air leakage and the like caused by improper matching or improper placing of the buckling position often occur in continuous production.

According to the manual assembly process, the stainless steel wire sheaths at the two ends of the hose are easy to explode and scatter, the steel wires of the explosion opening must be pressed forcibly during assembly, the steel wires are easy to prick hands during pressing, and the installation is slow. The rubber hose with the sheath is not installed in place with the root of the sleeve, so that the deformed sleeve is not clamped in the positioning groove after buckling, and the product performance is influenced. The final quality and performance of the product are directly affected by the operation habits and steps in the production process of different personnel, and the quality consistency and the performance stability of the product cannot be ensured.

The manual withholding technology is easy to loosen when the sleeve is assembled and moved, the requirement of secondary confirmation before withholding is needed, if the sleeve is not in the clamping groove position, products are easy to scrap after withholding, the withholding is that the preassembled products are placed in a withholding mould cavity through a manual visual inspection mode, the front and back and horizontal positions are movable, the improper placement position can cause the final withholding of the products to cause appearance defects, even poor performance, under the prior art condition, the products are assembled after the connector sleeve and the rubber hose with the sheath are assembled, and the products are moved or placed for a period of time, so that the appearance and the quality of the subsequent products are affected when being withheld.

The conventional manual assembling and buckling device has the advantages that the proficiency of workers is high, the quality consistency and the performance stability of products are directly influenced by operation methods and assembly habits of different workers, the production efficiency of manual assembling and buckling is low, the labor intensity is high, the qualified rate of the products cannot be guaranteed, the phenomenon of air tightness reduction can occur in the using process, and the service life of the products is shortened.

Disclosure of Invention

The invention provides an automatic assembling method of a sheath hose to solve the problems in the prior art, and adopts the following technical scheme to achieve the purpose.

The sheath hose includes sheath, hose, sleeve, gasket, fixed joint, swing joint, joint nut, core pipe, and the sheath parcel is at the hose outer wall, and one end is passed through sleeve, gasket and is connected fixed joint, and the other end passes through sleeve, gasket, joint nut and connects the swing joint, and the core pipe is installed inside the swing joint, imbeds the hose inner wall.

The automatic assembly comprises: sleeve assembling, joint assembling, sleeve buckling and detecting.

Assembling a sleeve: the sheath hose is positioned on the aligning device by adopting a fixing device, two ends of the sheath hose are restrained by adopting a tightening device, and the sleeve is nested at the port of the sheath hose by adopting an assembling clamping groove.

Controlling the left fixing device and the right fixing device to clamp the sheath hose by using the air cylinder, moving the sheath hose to the alignment device, and enabling the left end of the sheath hose to be tightly attached to the alignment device; clamping a part between the left end of the sheath hose and the left fixing device by using a left tightening device, clamping a part between the right end of the sheath hose and the right fixing device by using a right tightening device, contracting the left and right tightening devices, moving towards two ends respectively until the inner diameter is slightly smaller than the outer diameter of the sheath hose and slightly exceeds the port, tightly attaching the sheath of the port to the hose, and withdrawing from the aligning device; adopt "Z" type unloader with left and right sleeve slide respectively into left and right assembly clamping groove, adopt the left assembly clamping groove of cylinder control to move to left side of left tightening means, right assembly clamping groove moves to right side of right tightening means, left and right tightening means moves in opposite directions, control left and right draw-in groove along with left and right tightening means synchronous motion, make left and right sleeve nestification in the both ends of sheath hose.

Assembling a joint: the movable joint and the fixed joint are positioned at two ends of the sheath hose by adopting a clamping device, the core pipe is pushed into the inner wall of the hose by adopting a pushing device, and the gasket is tightly attached to a pull-back sleeve by adopting a tightening device.

Positioning the movable joint by adopting a left clamping device, aligning the core pipe with the left sleeve, positioning the fixed joint by adopting a right clamping device, and aligning the core pipe with the right sleeve; the left propelling device and the right propelling device are controlled to move oppositely by the air cylinder, the moving distance is set and monitored by the control panel, the depth of the core pipe inserted into the sleeve is controlled, the core pipe is ensured not to damage the hose excessively deeply or not to be completely meshed excessively shallowly, and the core pipe is propelled into the sleeve, so that the bottom of the core pipe is aligned with the sleeve opening; the left tightening device is adopted to move leftwards to push the left sleeve to cling to the gasket of the movable joint, the right tightening device is adopted to move rightwards to push the right sleeve to cling to the gasket of the fixed joint, so that the inner ring of the sleeve opening is aligned with the groove between the patch and the core pipe, the inner ring of the sleeve is ensured to be just embedded into the groove, and the core pipe and the joint are prevented from being crushed.

Sleeve buckling and outer diameter detection: the left positioning device and the right positioning device are adopted to clamp the movable joint and the fixed joint at the two ends of the sheath hose respectively, the cylinder is adopted to control the buckling device to clamp the sleeve to deform, the outer diameter of the sleeve is measured, and if the outer diameter exceeds a preset value, the assembly failure is judged.

The diameter of the sleeve is reduced, and the inner ring of the sleeve is embedded into a groove between the patch and the core pipe, so that the sheath, the hose and the core pipe are tightly pressed and engaged, and the sleeve is ensured to tightly press the internal accessories into a whole; the cylinder with the guide rail is adopted to control the high-precision sensor to clamp the sleeve to measure the outer diameter, if the outer diameter is smaller than a preset minimum value, the sleeve is compressed too little, a groove is possibly crushed, or the outer diameter is larger than a preset maximum value, the sleeve is deformed insufficiently, the groove cannot be clamped, the groove is easy to fall off, and then assembly failure is judged.

The sleeve, the joint and the hose with the sheath are placed in an assembly line, and program control equipment is adopted to automatically operate, realize automatic assembly, automatic buckling and automatic detection, reduce labor intensity and improve product quality; the tool sets with different sizes can be switched, the assembly requirements of products with different specifications such as a joint, a sleeve, a sheath hose and the like are met, the applicability and the compatibility are expandable, the proficiency of workers is not relied on, and the production efficiency is improved; the assembly is simple and in place, the stainless steel wire sheaths at the two ends of the openings are effectively tightened and stretched, the assembly with the sleeve is easier, the steel wires are easy to prick hands, and the quality problem that the stainless steel wire sheaths are not assembled in place is effectively controlled; the blanking, the movement and the detection are controlled by a machine, the inaccurate size caused by the improper joint and the improper placement caused by human factors is avoided, and the appearance and the quality are improved.

Drawings

Fig. 1 is a structural view of a sheath hose, fig. 2 is an alignment and constraint conceptual diagram of the sheath hose, fig. 3 is an assembly effect diagram of a sleeve, fig. 4 is a positioning conceptual diagram of a movable joint and a fixed joint, fig. 5 is an assembly effect diagram of a joint, fig. 6 is a pull-back effect diagram of a sleeve, fig. 7 is a crimping conceptual diagram of a joint, and fig. 8 is an outer diameter measurement conceptual diagram of a sleeve.

Reference numerals: 1-movable joint, 2-joint nut, 3-core tube, 4-gasket, 5-sleeve, 6-sheath, 7-hose, 8-fixed joint, 9-left fixing device, 10-right fixing device, 11-left tightening device, 12-right tightening device, 13-aligning device, 14-groove, 15-left clamping device, 16-right clamping device, 17-left buckling device, 18-right buckling device, 19-left positioning device, 20-right positioning device and 21-sensor

Detailed Description

Taking a common rubber hose with a metal sheath as an example, the finished product has a structure shown in fig. 1, wherein the sheath 6 wraps the outer wall of the hose 7, one end of the sheath is connected with the fixed joint 8 through the sleeve 5 and the gasket 4, the other end of the sheath is connected with the movable joint 1 through the sleeve 5, the gasket 4 and the joint nut 2, and the core pipe 3 is installed inside the movable joint 1 and embedded into the inner wall of the hose 7.

Firstly, sleeve assembling:

as shown in FIG. 2, the left fixing device 9 and the right fixing device 10 are controlled by the air cylinder to clamp the sheath hose, and the sheath hose is moved to the aligning device 13, so that the left end of the sheath hose is tightly attached to the aligning device 13, instead of being manually fixed by hands.

The left tightening device 11 is used for clamping the part between the left end of the sheath hose and the left fixing device 9, the right tightening device 12 is used for clamping the part between the right end of the sheath hose and the right fixing device 10, the left tightening device 11 and the right tightening device 12 are contracted, the inner diameter is slightly smaller than the outer diameter of the sheath hose, the left tightening device and the right tightening device move towards the two ends respectively and slightly exceed the ports, the sheaths of the constrained ports are tightly attached to the hose, the stainless steel wires of the explosion openings at the two ends are tightened, the sleeve is more easily nested on the outer wall of the sheath.

The left sleeve and the right sleeve slide into the left assembling clamping groove and the right assembling clamping groove respectively by adopting a Z-shaped blanking device, the left assembling clamping groove is controlled by the air cylinder to move to the left side of the left tightening device, the right assembling clamping groove moves to the right side of the right tightening device, the left tightening device and the right tightening device move oppositely, the left clamping groove and the right clamping groove are controlled to move synchronously along with the left tightening device and the right tightening device, and the left sleeve and the right sleeve are nested at two ends of the sheath hose as shown in figure 3.

Secondly, joint assembly:

as shown in fig. 4, the movable joint 1 is positioned with the core tube aligned with the left sleeve using the left clamping device 15, and the fixed joint 8 is positioned with the core tube aligned with the right sleeve using the right clamping device 16.

Adopt the cylinder control left and right advancing device to remove in opposite directions, adopt control panel setting and monitoring displacement, impel the sleeve with the core pipe, as shown in fig. 5, make core pipe bottom and cover barrel mouth align, replace artifical manual, than artifical strength big, liberated the labour.

The left tightening device 11 is adopted to move leftwards to push the left sleeve 5 to cling to the gasket 4 of the movable joint 1, the right tightening device 12 is adopted to move rightwards to push the right sleeve 5 to cling to the gasket 4 of the fixed joint 8, and as shown in figure 6, the inner ring of the sleeve opening is aligned with the groove 14 between the patch and the core tube, so that the identification is more accurate than that of human eyes, and preparation is made for subsequent assembly procedures.

And finally, sleeve buckling and outer diameter detection:

the movable joint 1 and the fixed joint 8 at two ends of the sheath hose are respectively clamped by a left positioning device 19 and a right positioning device 20, the sleeve 5 is clamped and pressed by a left buckling and pressing device 17 and a right buckling and pressing device 18 under the control of an air cylinder to generate deformation, and as shown in figure 7, the inner ring of the sleeve is embedded into a groove between the patch and the core tube.

The sensor 21 is used for clamping the sleeve 5 to measure the outer diameter, as shown in fig. 8, if the outer diameter is smaller than a preset minimum value, it is determined that the sleeve is excessively deformed, the inner ring crushes the groove, or the outer diameter is larger than a preset maximum value, it is determined that the sleeve is insufficiently deformed, the inner ring cannot be limited by the groove, and the assembly fails.

The above-described embodiments are not intended to limit the present invention, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present invention are included in the scope of the present invention.

Claims

1. The utility model provides a sheath hose automatic assembly method, the sheath hose includes sheath, hose, sleeve, gasket, fixed joint, movable joint, coupling nut, core pipe, and the sheath parcel is at the hose outer wall, and sleeve, gasket connection fixed joint are passed through to one end, and the other end passes through sleeve, gasket, coupling nut and connects movable joint, and the core pipe is installed inside movable joint, imbeds the hose inner wall, its characterized in that includes: assembling a sleeve: positioning the sheath hose at the alignment device by adopting a fixing device, restraining two ends of the sheath hose by adopting a tightening device, and nesting the sleeve at the port of the sheath hose by adopting an assembly clamping groove; assembling a joint: positioning the movable joint and the fixed joint at two ends of the sheath hose by adopting a clamping device, pushing the core pipe into the inner wall of the hose by adopting a pushing device, and tightly attaching the pull-back sleeve to the gasket by adopting a tightening device; sleeve buckling and outer diameter detection: the left positioning device and the right positioning device are adopted to clamp the movable joint and the fixed joint at the two ends of the sheath hose respectively, the cylinder is adopted to control the buckling device to clamp the sleeve to deform, the outer diameter of the sleeve is measured, and if the outer diameter exceeds a preset value, the assembly failure is judged.

2. The automated sheathing hose assembling method according to claim 1, wherein the sleeve assembling includes: controlling the left fixing device and the right fixing device to clamp the sheath hose by using the air cylinder, moving the sheath hose to the alignment device, and enabling the left end of the sheath hose to be tightly attached to the alignment device; clamping a part between the left end of the sheath hose and the left fixing device by using a left tightening device, clamping a part between the right end of the sheath hose and the right fixing device by using a right tightening device, contracting the left and right tightening devices, moving towards two ends respectively until the inner diameter is slightly smaller than the outer diameter of the sheath hose and slightly exceeds the port, tightly attaching the sheath of the port to the hose, and withdrawing from the aligning device; adopt "Z" type unloader with left and right sleeve slide respectively into left and right assembly clamping groove, adopt the left assembly clamping groove of cylinder control to move to left side of left tightening means, right assembly clamping groove moves to right side of right tightening means, left and right tightening means moves in opposite directions, control left and right draw-in groove along with left and right tightening means synchronous motion, make left and right sleeve nestification in the both ends of sheath hose.

3. The automated sheathing hose assembling method according to claim 1, wherein the joint assembling includes: positioning the movable joint by adopting a left clamping device, aligning the core pipe with the left sleeve, positioning the fixed joint by adopting a right clamping device, and aligning the core pipe with the right sleeve; controlling the left propelling device and the right propelling device to move oppositely by using an air cylinder, setting and monitoring the moving distance by using a control panel, and propelling the core pipe into the sleeve to align the bottom of the core pipe with the sleeve opening; and the left tightening device is adopted to move leftwards to push the left sleeve to cling to the gasket of the movable joint, the right tightening device is adopted to move rightwards to push the right sleeve to cling to the gasket of the fixed joint, and the inner ring of the sleeve opening is aligned with the groove between the patch and the core pipe.

4. The automatic assembling method for the sheath hose according to claim 1, wherein the sleeve crimping and outer diameter detection comprises: reducing the diameter of the sleeve, and embedding the inner ring of the sleeve into a groove between the patch and the core pipe to tightly engage the sheath, the hose and the core pipe; and controlling the high-precision sensor clamping sleeve to measure the outer diameter by adopting the cylinder with the guide rail, and judging that the assembly fails if the outer diameter is smaller than a preset minimum value or larger than a preset maximum value.