Assembling device for special-shaped rubber sealing ring

Abstract

According to the assembling device of the special-shaped rubber sealing ring, the special-shaped sealing ring comprises an outwards-protruding corner part and an inwards-concave corner part, the assembling device comprises a base plate and a plurality of ring expanding mechanisms, and the ring expanding mechanisms are arranged corresponding to the outwards-protruding corner part and the inwards-concave corner part of the special-shaped sealing ring respectively and are detachably and fixedly connected with the base plate; the ring expanding mechanism comprises a mounting table, a fixed arm, an adjusting arm, a hinge shaft, a first transmission chain, a second transmission chain, a first servo motor and a second servo motor, and the ring expanding mechanism controls the overturning angle of the adjusting arm and a slope formed by the adjusting arm through forward and reverse rotation of the second servo motor. The first transmission chain rotates forwards and turns over around the annular groove and is matched with the arranged bosses, so that a part of the special-shaped sealing ring is clamped through a recess between the two bosses, then the special-shaped sealing ring is driven by the movement of the first transmission chain to move towards a slope formed by the adjusting arm, and expansion of the sealing ring is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sealing ring assembly, in particular to an assembly device for special-shaped rubber sealing ring. BACKGROUND

[0002] Rubber sealing rings are widely used in mechanical, automotive, aerospace, space and other fields, mainly used to prevent leakage of liquids and gases, and ensure the sealing performance of equipment. With the progress of industrial technology, the application range of rubber sealing rings is becoming wider and wider, and at the same time, the performance requirements for sealing rings are becoming more and more stringent.

[0003] Rubber sealing rings have various materials and designs, and different physical properties such as hardness and elasticity. Different types of sealing rings face different challenges during assembly. In the traditional rubber sealing ring assembly process, it is often necessary to enlarge the outer diameter of the sealing ring to complete the installation. However, for sealing rings with high hardness and poor elasticity, they are easily affected by excessive force during the enlargement process, which can cause excessive deformation of the sealing ring, even cracks or breakage, and thus affect the sealing effect and service life of the product.

[0004] Various sealing rings are used in automobile parts. Some sealing rings are designed as special-shaped structures to adapt to the profile of the parts, and different special-shaped sealing rings have different profiles without a design rule. In the prior art, such special-shaped sealing rings can only be assembled manually, which is prone to the above-mentioned sealing ring assembly problems and has low assembly efficiency.

[0005] Therefore, it is necessary to design an assembly device that can adapt to different special-shaped sealing rings according to the profile changes of the special-shaped sealing rings, to form a unified and stable sealing ring enlargement and pressing work, to ensure that the special-shaped sealing ring is not damaged during assembly, and to improve the assembly efficiency. SUMMARY

[0006] The present application provides an assembly device for special-shaped rubber sealing ring to solve the above technical problems.

[0007] The technical scheme of the present application is an assembly device for special-shaped rubber sealing ring, the special-shaped sealing ring includes an outer convex corner part and an inner concave corner part, the assembly device includes a base plate and a plurality of ring expanding mechanisms, the plurality of ring expanding mechanisms are respectively arranged corresponding to the positions of each outer convex corner part and inner concave corner part of the special-shaped sealing ring, and are detachably fixedly connected with the base plate. The expanding ring mechanism comprises a mounting table, a fixed arm, an adjusting arm, a hinged shaft, a first transmission chain, a second transmission chain, a first servo motor and a second servo motor, the fixed arm comprises a fixed end connected with the mounting table and a first hinged joint arranged at the other end, the first hinged joint is provided with a first shaft hole, one end of the adjusting arm is provided with a first hinged groove matched with the first hinged joint, and the other end is provided with a circular arc part, the first hinged groove is coaxially provided with a second shaft hole corresponding to the first shaft hole, and the second shaft hole is provided with a key groove in the radial direction; The fixed arm and the adjusting arm are provided with an annular groove in the length direction, the mounting table is provided with a through groove matched with the annular groove, one end of the first transmission chain is sleeved in the annular groove of the fixed arm and the adjusting arm in a sliding fit, and the other end penetrates through the through groove, and a plurality of bosses are arranged on the outer surface of the first transmission chain away from the fixed arm and the adjusting arm in an interval. The hinged shaft comprises an insertion part and a transmission part, the insertion part is provided with a light axis segment penetrating through the first shaft hole and a synchronization segment penetrating through the second shaft hole, the synchronization segment is provided with a key that is matched with the key groove and synchronously rotates, and the transmission part extends axially to the outer side of the adjusting arm, and the transmission part is provided with a third sprocket; The first servo motor and the second servo motor are fixedly arranged on the end face of the mounting table away from the fixed arm, a first sprocket is arranged on the output shaft of the first servo motor, the first sprocket is sleeved with the end part of the first transmission chain penetrating through the through groove, and the first servo motor drives the first transmission chain to move in a forward rotation or a reverse rotation; A second sprocket is arranged on the output shaft of the second servo motor, the second transmission chain penetrates through the through groove and is sleeved on the second sprocket and the third sprocket at two ends to be engaged, and the second servo motor drives the adjusting arm to make a forward deflection or a reverse deflection around the hinged shaft through the second transmission chain; The first servo motors and the second servo motors of the plurality of expanding ring mechanisms are signal-linked, each second servo motor is linked to control the adjusting arm to move towards or away from the special-shaped sealing ring, when the adjusting arm is close to the special-shaped sealing ring, a slope is formed relative to the fixed arm, and the special-shaped sealing ring is partially trapped between the two bosses on the first transmission chain, each first servo motor is linked to control the first transmission chain to move in a forward rotation or a reverse rotation, the bosses drive the special-shaped sealing ring to move along the slope formed by the adjusting arm, and the special-shaped sealing ring is uniformly radially expanded.

[0008] Further provided in the application is that ball head protrusions are symmetrically arranged on both sides of the circular arc part of the adjusting arm, the ball head protrusions are used as the round corner contact supports of the outer convex corner part and the inner concave corner part of the special-shaped sealing ring.

[0009] Further arrangement of the present application: a plurality of first mounting holes are arranged on the base plate at intervals, a plurality of mounting columns are arranged on the mounting table at intervals corresponding to the interval distance of the first mounting holes, the mounting column is provided with a second mounting screw hole matched with the first mounting hole, and the base plate is detachably connected with the mounting seat of each expanding ring mechanism through a screw.

[0010] Further arrangement of the present application: the assembly device further comprises a mechanical hand, which is detachably fixedly connected with the base plate and drives the base plate to approach the special-shaped sealing ring, moves to the assembly station after the special-shaped sealing ring is lifted by each expanding ring mechanism, and drives the special-shaped sealing ring to enter the workpiece to be assembled.

[0011] Further arrangement of the present application: a rubber pad is arranged on the outer periphery of the first transmission chain, the side surface of the rubber pad in the width direction is in sliding fit with the side wall of the annular groove, and a plurality of bosses are arranged on the outer surface of the rubber pad away from the fixed arm and the adjusting arm at intervals.

[0012] The beneficial effects of the present application are shown in the description and drawings Figures 6-8 As shown in the description and drawings

[0013] As shown in the description and drawings Figures 1-5 The device can reposition the special-shaped sealing ring according to different profiles, adapt to form a corresponding special-shaped sealing ring assembly device, and uniformly and accurately control the turning angle of the adjusting arm and the movement amplitude of the first transmission chain through the signal linkage of the first servo motor and the second servo motor between the plurality of expanding ring mechanisms, so that the expansion amplitude of the special-shaped sealing ring can be numerically and accurately controlled, and the assembly quality of the special-shaped sealing ring is improved.

[0014] As shown in the description and drawings Figure 3 As shown in the description and drawings

[0015] Through the design of the base plate combined with the mechanical hand, the signal data linkage of the special-shaped sealing ring assembly line and the assembly tool assembly line can realize the automatic assembly of the special-shaped sealing ring. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 Structure for the embodiment of the present application Figure 1 ; Figure 2 Structure for the embodiment of the present application Figure 2 ; Figure 3 Structure for the embodiment of the present application Figure 3 ; Figure 4 Structure for the embodiment of the present application Figure 4 ; Figure 5 Structure for the embodiment of the present application Figure 5 ; Figure 6 Structure for the embodiment of the present application Figure 6 ; Figure 7 Structure for the embodiment of the present application Figure 7 ; Figure 8 Structure for the embodiment of the present application Figure 8 ; Wherein, the special-shaped sealing ring 1, the outer convex corner part 11, the inner concave corner part 12, the expanding ring mechanism 2, the mounting table 21, the through groove 211, the mounting column 212, the second mounting screw hole 213, the fixed arm 22, the first hinge joint 221, the first shaft hole 222, the adjusting arm 23, the hinge groove 231, the circular arc part 232, the second shaft hole 233, the key groove 234, the ball head protrusion 235, the hinge shaft 24, the transmission part 241, the optical axis section 242, the convex key 243, the first transmission chain 25, the boss 251, the second transmission chain 26, the first servo motor 27, the second servo motor 28, the annular groove 29, the base plate 3, the first mounting hole 31.

[0017] In order to better illustrate the embodiment, some components in the drawings may be omitted, enlarged or reduced, and do not represent the actual product size, and in addition, the drawings are only used for illustrative description and cannot be understood as a limitation of the patent. DETAILED DESCRIPTION

[0018] In order to make the technical scheme of the present application and its advantages clearer, the technical scheme of the present application will be further clearly and completely described in detail below in combination with the drawings. It can be understood that the specific embodiments described herein are only part of the embodiments of the present application, and are only used to explain the present application, but not to limit the present application. It should be noted that, in order to facilitate description, only parts related to the present application are shown in the drawings, and other related parts can be referred to the usual design. In the case of no conflict, the embodiments in the present application and the technical features in the embodiments can be combined to obtain new embodiments.

[0019] The present application will be described in detail below in combination with the drawings, such asFigures 1-7 shown, The application discloses an assembling device for a special-shaped rubber sealing ring, the special-shaped sealing ring 1 comprises an outer convex corner part 11 and an inner concave corner part 12, the assembling device comprises a base plate 3 and a plurality of ring expanding mechanisms 2, the ring expanding mechanisms 2 are respectively arranged at positions of the outer convex corner part 11 and the inner concave corner part 12 of the special-shaped sealing ring 1 and are detachably fixedly connected with the base plate 3. The ring expanding mechanism 2 comprises a mounting table 21, a fixed arm 22, an adjusting arm 23, a hinged shaft 24, a first transmission chain 25, a second transmission chain 26, a first servo motor 27 and a second servo motor 28, the fixed arm 22 comprises a fixed end connected with the mounting table 21 and a first hinged joint 221 arranged at the other end, the first hinged joint 221 is provided with a first shaft hole 222, one end of the adjusting arm 23 is provided with a hinged groove 231 matched with the first hinged joint 221, the other end is provided with a circular arc part 232, the hinged groove 231 is coaxially provided with a second shaft hole 233 corresponding to the first shaft hole 222, and the second shaft hole 233 is provided with a key groove 234 in the radial direction. The fixed arm 22 and the adjusting arm 23 are provided with annular grooves 29 in the length direction, the mounting table 21 is provided with a through groove 211 matched with the annular grooves 29, one end of the first transmission chain 25 is sleeved in the annular grooves 29 of the fixed arm 22 and the adjusting arm 23 in a sliding fit, the other end passes through the through groove 211, and a plurality of bosses 251 are arranged on the outer surface of the first transmission chain 25 away from the fixed arm 22 and the adjusting arm 23. The hinged shaft 24 comprises an insertion part and a transmission part 241, the insertion part is provided with a light shaft section 242 passing through the first shaft hole 222 and a synchronous section passing through the second shaft hole 233, the synchronous section is provided with a key 243 matched with the key groove 234 and synchronously rotating, and the transmission part 241 extends to the outer side of the adjusting arm 23 in the axial direction and is provided with a third sprocket. The first servo motor 27 and the second servo motor 28 are fixedly arranged on the end face of the mounting table 21 away from the fixed arm 22, a first sprocket is arranged on the output shaft of the first servo motor 27, the first sprocket is sleeved with the end part of the first transmission chain 25 passing through the through groove 211 and drives the first transmission chain 25 to move in the positive direction or in the reverse direction. A second sprocket is arranged on the output shaft of the second servo motor 28, the second transmission chain 26 passes through the through groove 211 and is sleeved on the second sprocket and the third sprocket at two ends to be engaged, and the second servo motor 28 drives the adjusting arm 23 to deflect in the positive direction or in the reverse direction around the hinged shaft 24 through the second transmission chain 26. The first servo motor 27 and the second servo motor 28 of the plurality of expanding ring mechanisms 2 are signal-linked, each second servo motor 28 controls the adjusting arm 23 to move towards or away from the special-shaped sealing ring 1, when the adjusting arm 23 is close to the special-shaped sealing ring 1, a slope is formed between the adjusting arm 23 and the relative fixed arm 22, and the special-shaped sealing ring 1 is partially trapped between the two protrusions 251 on the first transmission chain 25, each first servo motor 27 controls the first transmission chain 25 to move forward or reverse, the protrusions 251 drive the special-shaped sealing ring 1 to move along the slope formed by the adjusting arm 23, and the uniform radial expansion of the special-shaped sealing ring 1 is formed.

[0020] The two sides of the circular arc part 232 of the adjusting arm 23 are symmetrically provided with ball head protrusions 235, which are used as the round corner contact supports of the outer convex corner part 11 and the inner concave corner part 12 of the special-shaped sealing ring 1.

[0021] A plurality of first mounting holes 31 are arranged on the base plate 3 at intervals, a plurality of mounting columns 212 are arranged on the mounting table 21 at intervals corresponding to the interval distance of the first mounting holes 31, the mounting column 212 is provided with a second mounting screw hole 213 matched with the first mounting hole 31, and the base plate 3 is detachably connected with the mounting seat of each expanding ring mechanism 2 through a screw.

[0022] The assembly device further comprises a mechanical hand, which is detachably fixedly connected with the base plate 3 and drives the base plate 3 to approach the special-shaped sealing ring 1, after the special-shaped sealing ring 1 is lifted by each expanding ring mechanism 2, the base plate 3 is driven to move to an assembly station, and the special-shaped sealing ring 1 is driven by each expanding ring mechanism 2 to enter a workpiece to be installed.

[0023] A rubber pad is arranged on the outer circumferential surface of the first transmission chain 25, the side surface of the rubber pad in the width direction is in sliding fit with the side wall of the annular groove 29, and a plurality of protrusions 251 are arranged on the outer surface of the rubber pad away from the fixed arm 22 and the adjusting arm 23 at intervals.

[0024] The beneficial effects of the present application are shown in the description and drawings. Figures 6-8 The expanding ring mechanism 2 controls the turning angle of the adjusting arm 23 through forward and reverse rotation of the second servo motor 28, the slope formed by the adjusting arm 23, the forward rotation and reverse rotation of the first transmission chain 25 around the annular groove 29 and the arranged protrusions 251 are mutually matched, so that the special-shaped sealing ring 1 is clamped in the recess between the two protrusions 251, then the movement of the first transmission chain 25 drives the special-shaped sealing ring 1 to displace towards the slope formed by the adjusting arm 23, so that the expansion of the sealing ring is realized.

[0025] The beneficial effects of the present application are shown in the description and drawings. Figures 1-5As shown, the device is provided with the expansion ring mechanism 2 corresponding to the outer convex corner part 11 and the inner concave corner part 12 of the special-shaped sealing ring 1, and is detachably fixedly connected with the base plate 3. The position of the special-shaped sealing ring 1 can be reorganized, and the corresponding special-shaped sealing ring 1 assembling device can be adapted. The first servo motor 27 and the second servo motor 28 of the plurality of expansion ring mechanisms 2 are signal-linked, the turning angle of the adjusting arm 23 and the movement amplitude of the first transmission chain 25 are uniformly and accurately controlled, so that the expansion amplitude of the special-shaped sealing ring 1 can be accurately controlled, and the assembly quality of the special-shaped sealing ring 1 is improved.

[0026] As shown in the accompanying drawings Figure 3 As shown, the expansion ring mechanism 2 is arranged at the outer convex corner part 11 and the inner concave corner part 12, and the contact support of the designed ball head protrusion 235 and the fillet part of the corner improves the contact stability, and only a minimum number of expansion ring mechanisms 2 are required.

[0027] Through the design of the base plate 3 combined with the mechanical hand, the signal data linkage of the special-shaped sealing ring 1 assembly line and the tool assembly line can realize the automatic assembly of the special-shaped sealing ring 1.

[0028] So far, the technical scheme of the present application has been described in combination with the preferred embodiments shown in the drawings. It should be understood by those skilled in the art that the protection scope of the present application is obviously not limited to these specific embodiments. Without deviating from the principles of the present application, those skilled in the art can make equivalent changes or replacements to the related technical features, and the technical scheme after the changes or replacements will fall within the protection scope of the present application.

Claims

1. An assembly device for irregularly shaped rubber sealing rings, characterized in that: The irregular sealing ring includes an outwardly convex corner portion and an inwardly concave corner portion. The assembly device includes a base plate and several expansion mechanisms. These several expansion mechanisms are respectively set at the positions of each outwardly convex corner portion and inwardly concave corner portion of the irregular sealing ring and are detachably fixedly connected to the base plate. The expanding ring mechanism includes a mounting platform, a fixed arm, an adjusting arm, a hinge shaft, a first transmission chain, a second transmission chain, a first servo motor, and a second servo motor. The fixed arm includes a fixed end connected to the mounting platform and a first hinge joint disposed at the other end. The first hinge joint is provided with a first shaft hole. One end of the adjusting arm is provided with a hinge groove adapted to the first hinge joint, and the other end is provided with an arc portion. The hinge groove is coaxially provided with a second shaft hole corresponding to the first shaft hole, and the second shaft hole is provided with a keyway radially. The fixed arm and the adjusting arm are provided with annular grooves along their length direction. The mounting platform is provided with a through groove that connects to the annular groove. One end of the first transmission chain is fitted into the annular groove of the fixed arm and the adjusting arm for sliding engagement, and the other end passes through the through groove. Several protrusions are provided at intervals on the outer surface of the first transmission chain on the side away from the fixed arm and the adjusting arm. The hinge shaft includes an insertion part and a transmission part. The insertion part is provided with an optical shaft section passing through a first shaft hole and a synchronous section passing through a second shaft hole. The synchronous section is provided with a convex key that is adapted to the keyway and rotates synchronously. The transmission part extends axially to the outer side of the adjusting arm and is provided with a third sprocket. The first servo motor and the second servo motor are fixedly mounted on the end face of the mounting platform facing away from the fixed arm. The first servo motor has a first sprocket on its output shaft. The first sprocket is engaged with the end of the first transmission chain that passes through the through groove and drives the first transmission chain to rotate forward or in reverse. The second servo motor output shaft is provided with a second sprocket, the second transmission chain passes through the through slot and its two ends are respectively sleeved on the second sprocket and the third sprocket for meshing, and the second servo motor drives the adjusting arm to deflect forward or backward around the hinge shaft through the second transmission chain; The first and second servo motors of the plurality of expanding ring mechanisms are linked by signals. Each second servo motor controls the adjusting arm to move toward or away from the irregular sealing ring. When the adjusting arm is close to the irregular sealing ring, it forms a slope relative to the fixed arm, and the irregular sealing ring is partially trapped between two bosses on the first transmission chain. Each first servo motor controls the first transmission chain to rotate forward or in reverse. The bosses drive the irregular sealing ring to move along the slope formed by the adjusting arm, thus forming a uniform radial expansion of the irregular sealing ring.

2. The assembly device for an irregularly shaped rubber sealing ring according to claim 1, characterized in that: On both sides of the arc portion of the adjusting arm, there are symmetrical ball head protrusions, which serve as rounded corner contact supports for the outer convex corner and inner concave corner of the irregular sealing ring.

3. The assembly device for an irregularly shaped rubber sealing ring according to claim 1 or 2, characterized in that: The base plate is provided with a plurality of first mounting holes arranged at intervals. The mounting platform is provided with a plurality of mounting posts at intervals corresponding to the first mounting holes. The mounting posts are provided with second mounting screw holes that are adapted to the first mounting holes. The base plate and the mounting seats of each expansion mechanism are detachably connected by screws.

4. The assembly device for an irregularly shaped rubber sealing ring according to claim 3, characterized in that: The assembly device also includes a robotic arm, which is detachably fixed to the base plate and drives the base plate to approach the irregular sealing ring. After each ring expansion mechanism lifts the irregular sealing ring, the base plate is driven to move to the assembly station, and each ring expansion mechanism drives the irregular sealing ring into the workpiece to be installed.

5. The assembly device for an irregularly shaped rubber sealing ring according to claim 4, characterized in that: A rubber pad is provided on the outer peripheral surface of the first transmission chain. The side of the rubber pad in the width direction slides against the side wall of the annular groove. Several protrusions are provided at intervals on the outer surface of the rubber pad away from the fixed arm and the adjusting arm.

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