Grabbing device for gluing of oil sprayer bush

Abstract

The utility model relates to the technical field of fuel injector bushings, and discloses a gripping device for gluing fuel injector bushings, which comprises a fixing plate, an air cylinder is arranged on the top surface of the fixing plate, a motor is arranged on one side of the air cylinder, and the fixing plate is rotationally connected with the top end of a clamping jaw outer shaft; a plurality of openings are annularly formed in the bottom end of the clamping jaw outer shaft, and a clamping jaw mandrel is arranged in the clamping jaw outer shaft; the top end of the clamping jaw mandrel extends upwards to the position above the clamping jaw outer shaft and is movably connected with the output end of the air cylinder, the bottom end of the clamping jaw mandrel is arranged to be a conical body, the circumferential side of the conical body is in sliding fit with the clamping block, and the air cylinder drives the conical body to slide up and down in the moving space of the bottom of the clamping jaw outer shaft so that the clamping block can stretch out of the opening. The output end of the motor is connected with the clamping jaw outer shaft to realize rotation of the clamping jaw outer shaft; the linear reciprocating motion of the air cylinder is converted into the expansion and contraction motion of the clamping block, so that the clamping block extends out of the opening, the inner side of the oil sprayer bush is supported tightly, it is guaranteed that the outer side of the bush can be fully glued subsequently, the labor cost is saved, and the labor intensity of an operator is relieved.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel injector bushings, in particular to a gripping device for applying glue to fuel injector bushings. Background Technique

[0002] The prior art for the assembly of fuel injector bushings is manual assembly. The operator picks up the fuel injector bushing, manually applies glue to the end face and outer circle of the fuel injector bushing, and then puts the fuel injector bushing into the bottom hole of the fuel injector bushing in the cylinder head. However, the cost of manually assembling fuel injector bushings is relatively high. The cycle time of this process is 38 seconds per piece. The operator needs to keep operating. Each person can assemble about 950 fuel injector bushings per day, and the labor intensity is relatively high.

[0003] The utility model patent with the authorization announcement number CN220074518U discloses a clamping mechanism with a clamping and rotatable function. This solution can clamp the structure through the clamping component and realize rotation through the rotator. However, if this solution is used for gripping during the glue application of the fuel injector bushing, although the fuel injector bushing can be clamped and the subsequent glue application process can be realized by rotating the fuel injector bushing, the clamping component of this solution clamps the outer side of the fuel injector bushing. During the subsequent glue application, the position clamped by the clamping component cannot be normally glued. Therefore, this solution has certain limitations for the glue application and assembly of fuel injector bushings. Summary of the Utility Model

[0004] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide a gripping device for applying glue to fuel injector bushings, which converts the linear reciprocating motion of the cylinder into the expansion and contraction motion of the clamping block to realize the clamping block extending out of the opening, so as to tighten the inner side of the fuel injector bushing. The output end of the motor is connected to the outer shaft of the jaw to realize the rotation of the outer shaft of the jaw, ensuring that the outer side of the bushing can be fully glued subsequently, saving labor costs and reducing the labor intensity of the operator.

[0005] In order to achieve the above purpose, the utility model is realized through the following technical solutions:

[0006] A gripping device for applying glue to fuel injector bushings includes a fixing plate. A cylinder is arranged on the top surface of the fixing plate. A motor is arranged on one side of the cylinder. The top end of the outer shaft of the jaw is rotatably connected to the fixing plate; several openings are circumferentially arranged at the bottom end of the outer shaft of the jaw, and a jaw core shaft is arranged inside; the top end of the jaw core shaft extends upward above the outer shaft of the jaw and is movably connected to the output end of the cylinder. The bottom end of the jaw core shaft is set as a cone body. The clamping block is slidably matched on the circumference of the cone body. The cylinder slides up and down in the moving space at the bottom of the jaw core shaft through the cone body to realize the clamping block extending out of the opening; the output end of the motor is connected to the outer shaft of the jaw to realize the rotation of the outer shaft of the jaw.

[0007] By converting the linear reciprocating motion of the cylinder into the expansion and contraction motion of the clamping block, the clamping block is extended out of the opening, so as to tightly support the inner side of the fuel injector bushing, ensuring that the subsequent full coating of glue can be carried out on the outer side of the bushing; the output end of the motor is connected to the outer shaft of the jaw to realize the rotation of the outer shaft of the jaw, realize the rotation of the fuel injector bushing, and realize the rotation coating of the fuel injector bushing after being grasped and moved to the coating station, saving labor costs and reducing the labor intensity of the operator.

[0008] As a further implementation method, a support frame is provided on the top surface of the fixed plate, the cylinder is installed on the support frame, and the motor is installed on the top surface of the fixed plate on one side of the support frame.

[0009] As a further implementation method, the fixed plate is provided with an opening, and a bearing fixed plate is arranged at the opening. The top end of the outer shaft of the jaw passes through the bearing fixed plate and is matched with the bearing fixed plate through a bearing.

[0010] As a further implementation method, the bearing fixed plate includes a support plate and a sleeve structure connected as a whole. The sleeve structure penetrates the fixed plate and is matched with the outer shaft of the jaw through a bearing, and the support plate abuts against the top surface of the fixed plate.

[0011] As a further implementation method, an annular step is provided on the circumferential side of the outer shaft of the jaw near the top end, and the bottom of the inner ring of the bearing abuts against the step.

[0012] As a further implementation method, a limit nut is arranged on the circumferential side of the top end of the outer shaft of the jaw, and the limit nut abuts against the inner ring of the bearing.

[0013] As a further implementation method, an annular groove is provided at the top end position of the jaw core shaft, a connecting block is provided at the output end of the cylinder, and the top end of the jaw core shaft is clamped inside the connecting block through the annular groove, realizing the rotational cooperation between the jaw core shaft and the connecting block.

[0014] As a further implementation method, the output end of the motor penetrates the fixed plate and extends to the bottom of the fixed plate. A transmission wheel is arranged on the circumferential side of the outer shaft of the jaw, and the output end of the motor is matched with the transmission wheel through a transmission belt.

[0015] As a further implementation method, a screw is arranged on the outer side of the transmission wheel, and an induction switch is arranged on one side of the fixed plate. The induction switch is arranged corresponding to the screw.

[0016] As a further implementation method, the clamping block is correspondingly arranged at the opening. The inner side surface of the clamping block is adapted to the surface shape of the cone and is in sliding fit with the cone.

[0017] The beneficial effects of the above-mentioned utility model are as follows:

[0018] 1. The utility model converts the linear reciprocating motion of the cylinder into the expansion and contraction motion of the clamping block, so as to realize the clamping block extending out of the opening, thereby tightly supporting the inner side of the fuel injector bushing, ensuring that the subsequent full coating of glue can be carried out on the outer side of the bushing; the output end of the motor is connected to the outer shaft of the jaw to realize the rotation of the outer shaft of the jaw, realize the rotation of the fuel injector bushing, and realize the grasping of the fuel injector bushing and moving it to the gluing station for rotary gluing, saving labor costs and reducing the labor intensity of the operator.

[0019] 2. After the cylinder of the utility model extends out, under the action of the gravity of the fuel injector bushing, the clamping block becomes loose, and the fuel injector bushing falls by gravity, realizing the automatic grasping and releasing functions of the fuel injector bushing.

[0020] 3. The grasping device of the utility model works driven by the robotic arm, and can grasp the fuel injector bushing and automatically assemble it into the bottom hole of the fuel injector bushing of the cylinder head.

[0021] 4. The utility model uses an inductive switch in cooperation with a screw. By counting the number of times the screw passes through the inductive switch, it is judged whether the fuel injector bushing has completed one full rotation, which can avoid the phenomenon of missed coating or overcoating of the fuel injector bushing during gluing.

[0022] 5. Considering that the motor needs to drive the rotation of the outer shaft of the jaw, the outer shaft of the jaw drives the rotation of the clamping block, and there is a clamping force between the clamping block and the core shaft of the jaw, and the core shaft of the jaw rotates, the utility model specifically designs the core shaft of the jaw and the connecting block to be in a movable fit to ensure the stable operation of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The attached drawings forming a part of the present utility model are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation of the present utility model.

[0024] Figure 1 is the overall structural schematic diagram of the grasping device for coating the fuel injector bushing of the present utility model;

[0025] Figure 2 is Figure 1 the A-A cross-sectional view in

[0026] Figure 3 is Figure 2 the enlarged schematic diagram of part B in

[0027] Figure 4 is the structural schematic diagram of the core shaft of the jaw in the embodiment of the present utility model;

[0028] Figure 5 is the structural schematic diagram of the cooperation between the core shaft of the jaw and the connecting block in the embodiment of the present utility model

[0029] Figure 6It is a schematic structural diagram of the outer shaft part of the jaw in the embodiment of the present utility model;

[0030] Figure 7 is Figure 6 the sectional structural schematic diagram of;

[0031] Figure 8 It is a schematic structural diagram of the fuel injector bushing in the embodiment of the present utility model;

[0032] Figure 9 is Figure 8 the A-A sectional view in;

[0033] In the figure: The distances or dimensions between each part are exaggerated for showing the positions of each part, and the schematic diagram is only for illustration.

[0034] Among them: 1. Cylinder; 2. Motor; 3. Fixed plate; 4. Transmission belt; 5. Transmission wheel; 6. Outer shaft of the jaw; 7. Clamping block; 8. Screw; 9. Inductive switch; 10. Support frame; 11. Core shaft of the jaw; 12. Bearing; 13. Bearing fixed plate; 14. Limit nut; 15. Connecting block; 16. Fuel injector bushing, 111. Cone; 112. Opening; 113. Annular groove; 61. Activity space; 62. Step. Specific embodiments

[0035] It should be noted that the following detailed descriptions are all illustrative and are intended to provide further explanations of the present utility model. Unless otherwise specified, all technical and scientific terms used in the present utility model have the same meanings as those commonly understood by those of ordinary skill in the technical field to which the present utility model belongs.

[0036] Glossary of terms:

[0037] Fuel injector bushing: The fuel injector bushing is a part installed on the cylinder head to isolate the fuel injector from other chambers of the cylinder head.

[0038] Cylinder head: The cylinder head is one of the important components of the engine. It is located above the engine cylinder block and is a part of the combustion chamber. The main function of the cylinder head is to seal the upper part of the cylinder and form a combustion chamber together with the piston top and the cylinder wall. The fuel injector is installed at the fuel injector bushing in the cylinder head.

[0039] Inductive switch: It is an electronic switch device based on the induction principle. It controls the on-off state of the switch by detecting specific signals of the target object through the inductor. Specifically, when the target object approaches or moves away from the inductive switch, the inductor will sense the presence or disappearance of the object and convert it into an electrical signal and output it to the controller, thereby realizing non-contact control of the detected object.

[0040] Embodiment 1

[0041] In a typical embodiment of the present utility model, with reference to Figures 1 - 9 As shown, a gripping device for applying glue to an injector bushing includes a fixed plate 3. A cylinder is provided on the top surface of the fixed plate. A motor 2 is provided on one side of the cylinder 1. The top end of a clamping jaw outer shaft 6 is rotatably connected to the fixed plate 3. A plurality of openings 112 are circumferentially provided at the bottom end of the clamping jaw outer shaft 6, and a clamping jaw core shaft 11 is provided inside. The top end of the clamping jaw core shaft 11 extends upward above the clamping jaw outer shaft 6 and is movably connected to the output end of the cylinder 1. The bottom end of the clamping jaw core shaft 11 is set as a cone body 111. A clamping block 7 is provided on the circumferential side of the cone body 111. The cylinder 1 drives the cone body 111 to slide up and down within the movable space at the bottom of the clamping jaw outer shaft 6 to enable the clamping block 7 to extend out of the opening. The output end of the motor 2 is connected to the clamping jaw outer shaft 6 to enable the clamping jaw outer shaft to rotate.

[0042] In this embodiment, the clamping block 7 of this embodiment can support the injector bushing from the inside of the injector bushing to achieve the gripping of the injector bushing, and then drive the injector bushing to rotate to achieve glue application, improving the working efficiency.

[0043] As Figure 1 and Figure 2 shown, a support frame 10 is provided on the top of the fixed plate 3. A cylinder 1 is provided on the top of the support frame 10. The motor 2 is installed on the top surface of the fixed plate 3 on one side of the support frame 10.

[0044] A hole is opened on the fixed plate 3. The hole is a round hole, and a bearing fixing plate 13 is provided at the opening. The bearing fixing plate 13 of this embodiment includes a support plate and a sleeve structure. The sleeve structure is connected to the bottom of the support plate. The sleeve structure is provided with a through hole, and the through hole penetrates the support plate.

[0045] The sleeve structure penetrates the hole opened on the fixed plate 3. The support plate abuts against the top surface of the fixed plate. The support plate can be fixedly connected to the fixed plate 3 by bolts. As Figure 2 shown, the top end of the clamping jaw outer shaft passes through the through hole on the bearing fixing plate 13 and is matched with the bearing fixing plate through a bearing 12. Specifically, the sleeve structure is rotationally matched with the clamping jaw outer shaft 6 through a bearing.

[0046] As Figure 7 shown, a circular step 62 is provided on the circumferential side of the clamping jaw outer shaft 6 near the top end. The bottom of the inner ring of the bearing abuts against the step to achieve positioning.

[0047] To further prevent the relative sliding between the clamping jaw outer shaft 6 and the bearing fixing plate, a limit nut 14 is provided on the circumferential side of the top end of the clamping jaw outer shaft. The limit nut 14 abuts against the inner ring of the bearing 12. It can be understood that the diameter of the step of the clamping jaw outer shaft and the diameter of the contact part between the limit nut 14 and the inner ring of the bearing are both designed to exactly cover the diameter of the inner ring of the bearing without interfering with the balls.

[0048] As Figure 4 and Figure 5As shown, an annular groove 113 is provided at the top end of the jaw mandrel 11. A connecting block 15 is provided at the output end of the air cylinder 1. The top end of the jaw mandrel 11 is clamped inside the connecting block 15 through the annular groove 113, realizing the rotational cooperation between the jaw mandrel 11 and the connecting block 15. Other forms can also be adopted for the movable connection between the top end of the jaw mandrel 11 and the connecting block 15, as long as the rotational connection between the two can be realized and disengagement does not occur.

[0049] As Figure 1 shown, the output end of the motor 2 penetrates through the fixed plate 3 and extends below the fixed plate. A transmission wheel 5 is fixed on the circumferential side of the jaw outer shaft 6. The transmission wheel 5 is located below the bearing fixed plate 13. The height of the transmission wheel 5 is adapted to the output end of the motor 2. A set of driving wheels is installed at the output end of the motor 2. The driving wheel and the transmission wheel 5 are connected by a transmission belt 4. The motor enables the driving wheel to rotate, and further enables the transmission wheel 5 to drive the jaw outer shaft 6 to rotate.

[0050] As Figure 1 and Figure 2 shown, the jaw mandrel 11 is arranged inside the jaw outer shaft 6 and is coaxially arranged with the jaw outer shaft 6. A channel for the movement of the jaw mandrel 11 is correspondingly opened inside the jaw outer shaft 6. The channel is arranged along the length direction of the jaw outer shaft 6. The bottom of the jaw outer shaft 6 is closed. The channel extends to the top end of the jaw outer shaft 6, and the top end of the jaw outer shaft 6 is open. The channel is communicated with the outside through the opening. The channel is divided into two parts, including a first part located in the upper part and a second part near the bottom end. The inner diameter of the channel in the second part is larger than the inner diameter of the channel in the first part. The inner diameter of the channel in the first part is adapted to the outer diameter of the jaw mandrel 11. The second part of the channel serves as the movement space for the conical body at the bottom end of the jaw mandrel 11.

[0051] The top end of the jaw mandrel 11 extends out of the jaw outer shaft 6 and is connected to the connecting block 15 at the output end of the air cylinder 1. As Figure 1 shown, in the natural state, the output end of the air cylinder passes through the support frame 10 and is connected to the jaw outer shaft 6.

[0052] The air cylinder drives the conical body 111 to slide up and down in the movement space 61 at the bottom of the jaw outer shaft. Specifically, the air cylinder can drive the jaw mandrel 11 to slide inside the jaw outer shaft 6 through the connecting block 15, realizing the up and down sliding of the conical body 111 at the second part of the channel.

[0053] As Figures 3 - 6 shown, three groups of clamping blocks 7 are in sliding fit with the circumferential side of the conical body 111. Three groups of openings 112 are circumferentially and correspondingly arranged at the bottom end position of the jaw outer shaft 6. The clamping blocks 7 are correspondingly arranged at the openings 112. The inner side surface of the clamping block 7 is adapted to the surface shape of the conical body 111 and is in sliding fit with the conical body 111.

[0054] When the conical body 111 rises within the movable space, the clamping block 7 can be extruded outward from the opening position. The outer side of the clamping block 7 is the contact side with the inner side surface of the fuel injector bushing 16. When the three groups of clamping blocks 7 extend simultaneously, it can support the fuel injector bushing from the inside and achieve automatic grasping of the fuel injector bushing.

[0055] After grasping the fuel injector bushing 16, it is necessary to drive the fuel injector bushing 16 to rotate to achieve the gluing process. At this time, the motor 2 drives the rotation of the fuel injector bushing through the transmission wheel 5.

[0056] In order to ensure uniform gluing of the fuel injector bushing 16, it is necessary to ensure that the fuel injector bushing stops rotating one full circle. As Figure 1 shown, a screw 8 is provided on the outer side of the transmission wheel 5, and an induction switch 9 is provided on one side of the fixed plate. The induction switch 9 is arranged corresponding to the screw 8. After the induction switch 9 detects that the screw 8 has rotated one full circle, it controls the motor 2 to stop rotating.

[0057] In this embodiment, corresponding mounting holes are provided on the side surface of the fixed plate 3 for mounting at the end of the robotic arm, and the device is driven to work by the robotic arm.

[0058] Specific working principle:

[0059] As Figures 1 - 9 shown, the original state of the cylinder 1 is in the extended state, and at this time, the clamping block 7 is in a loose state. When the robotic arm drives the grasping device for the fuel injector bushing to reach the designated position, the bottom end of the outer shaft 6 of the jaw extends into the inner hole of the fuel injector bushing, the cylinder retracts, driving the core shaft 11 of the jaw to rise. The conical body at the bottom end of the core shaft 11 of the jaw squeezes the clamping block to extend, and the clamping block 7 contacts and squeezes the inner hole wall of the fuel injector bushing, so that the fuel injector bushing can be grasped. Then the grasping device for the fuel injector bushing moves to the gluing position, and the motor 2 is started. The outer shaft of the jaw is rotated through the conveyor belt 4. The outer shaft 6 of the jaw drives the clamping block to rotate, and the clamping block can drive the fuel injector bushing to rotate. The induction switch 9 detects whether the screw 8 rotates one full circle. After rotating one full circle, the motor 2 is stopped, so as to realize the gluing of the outer circle of the end face of the fuel injector bushing. After the gluing is completed, the grasping device for the fuel injector bushing, driven by the robotic arm, reaches the bottom hole of the fuel injector bushing of the cylinder head, the cylinder extends, and under the action of the gravity of the fuel injector bushing, the clamping block becomes loose, and the fuel injector bushing 16 falls by gravity, realizing the functions of automatic grasping and gluing of the fuel injector bushing, improving the work efficiency. Figure 9 The outer surface of the fuel injector bushing in Figures 8 - 9 is shown as being coated with a layer of glue. The incoming state of the fuel injector bushing is with the large end facing up, neatly arranged in the work position fixture. The schematic diagram of the fuel injector bushing is as

[0060] shown. This embodiment can realize the automatic grasping of the fuel injector bushing, and during subsequent gluing, it can drive the bushing to rotate one full circle for rotary gluing. The structure is simple and reliable, the input cost is low, the work efficiency can be improved, the labor cost of the enterprise can be saved, and the labor intensity of the operator can be reduced.

[0061] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, various modifications and variations can be made to the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A gripping device for coating glue on a fuel injector bushing, characterized in that: The invention comprises a fixing plate (3), a cylinder (1) is arranged on the top surface of the fixing plate (3), a motor (2) is arranged on one side of the cylinder (1), and the fixing plate (3) is rotatably connected to the top of a clamping jaw outer shaft (6); a plurality of openings (112) are arranged in an annular direction at the bottom end of the clamping jaw outer shaft (6), and a clamping jaw core shaft (11) is arranged inside; the top end of the clamping jaw core shaft (11) extends upward to the top of the clamping jaw outer shaft (6) and is movably connected to the output end of the cylinder (1); the bottom end of the clamping jaw core shaft (11) is arranged as a cone (111), the circumferential side of the cone (111) is slidably matched with a clamping block (7), and the cylinder (1) drives the cone (111) to slide up and down in an active space (61) at the bottom of the clamping jaw outer shaft (6) so as to enable the clamping block (7) to extend out of the opening (112); and the output end of the motor (2) is connected to the clamping jaw outer shaft (6) so as to enable the clamping jaw outer shaft (6) to rotate.

2. A gripping device for glue coating of injector bushing according to claim 1, characterized in that: A support frame (10) is provided on the top surface of the fixing plate (3), the cylinder (1) is mounted on the support frame (10), and the motor (2) is mounted on the top surface of the fixing plate (3) on one side of the support frame (10).

3. The gripping device for glue coating of fuel injector bushing according to claim 1, characterized in that: The fixing plate (3) has a hole, and a bearing fixing plate (13) is arranged at the hole. The top end of the outer shaft (6) of the clamping jaw passes through the bearing fixing plate (13) and cooperates with the bearing fixing plate (13) through the bearing (12).

4. A gripping device for glue coating of injector bushing according to claim 3, characterized in that: The bearing fixing plate (13) comprises a support plate and a sleeve structure connected as one body, the sleeve structure passes through the fixing plate (3) and cooperates with the clamping jaw outer shaft (6) through the bearing (12), and the support plate abuts against the top surface of the fixing plate (3).

5. A gripping device for glue coating of injector bushing according to claim 4, characterized in that: An annular step (62) is provided on the peripheral side of the clamping jaw outer shaft (6) close to the top end, and the bottom of the inner ring of the bearing (12) abuts against the step (62).

6. A gripping device for glue coating of injector bushing according to claim 5, characterized in that: A limiting nut (14) is arranged on the peripheral side of the top end of the outer shaft (6) of the clamping jaw, and the limiting nut (14) abuts against the inner ring of the bearing (12).

7. The gripping device for glue coating of fuel injector bushing according to claim 1, characterized in that: An annular groove (113) is provided at the top end of the clamping jaw core shaft (11), and a connecting block (15) is provided at the output end of the cylinder (1). The top end of the clamping jaw core shaft (11) is clamped in the interior of the connecting block (15) through the annular groove (113), thereby realizing rotational cooperation between the clamping jaw core shaft (11) and the connecting block (15).

8. The gripping device for glue coating of fuel injector bushing according to claim 1, characterized in that: The output end of the motor (2) passes through the fixed plate (3) and extends to the bottom of the fixed plate (3); a transmission wheel (5) is provided on the circumference of the outer shaft (6) of the clamping jaw; the output end of the motor (2) cooperates with the transmission wheel (5) via a transmission belt (4).

9. A gripping device for glue coating of fuel injector bushing according to claim 8, characterized in that: A screw (8) is provided on the outside of the transmission wheel (5), and an induction switch (9) is provided on one side of the fixing plate (3), and the induction switch (9) is arranged corresponding to the screw (8).

10. The gripping device for glue coating of fuel injector bushing according to claim 1, characterized in that: The clamping block (7) is arranged correspondingly at the opening (112); the inner side surface of the clamping block (7) is adapted to the surface shape of the cone (111) and is slidably matched with the cone (111).

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