Clamping device for fuel injector shell detection

Abstract

The utility model discloses a clamping device for fuel injector shell detection, which belongs to the technical field of fuel injector shell detection and comprises an upper ejector rod, a lower ejector rod and a lifting mechanism. The upper ejector rod comprises a first conical head part arranged at the lower end of the upper ejector rod; the diameter of the working position of the first conical head part is greater than the inner diameter of the upper port of the fuel injector shell; the lower ejector rod is fixedly connected with the lifting end of the lifting mechanism; the lower ejector rod comprises a second conical head part arranged at the upper end of the lower ejector rod; the diameter of the lower ejector rod is not larger than the minimum outer diameter of the fuel injector shell, and the diameter of the lower ejector rod is larger than the inner diameter of a lower port of the fuel injector shell. The axis of the upper ejector rod and the axis of the lower ejector rod are collinear. And a gap through which the fuel injector shell can pass in the horizontal direction in a vertical state is formed between the lower vertex of the upper ejector rod and the upper vertex of the lower ejector rod. According to the utility model, the fuel injector shell can be effectively clamped and conveyed to a detection position, and meanwhile, secondary damage to the fuel injector shell is avoided.

Description

Technical Field

[0001] This utility model relates to the field of fuel injector housing detection technology, and in particular to a clamping device for fuel injector housing detection. Background Technology

[0002] Fuel injectors are a key component of the engine's fuel supply system. Their main function is to inject fuel into the engine's intake manifold or combustion chamber in a precise amount and with the appropriate spray pattern. Accurate control of the fuel injector has a crucial impact on engine performance, fuel economy, and emissions. If the fuel injector malfunctions, such as becoming clogged, leaking, or exhibiting abnormal spray patterns, it can lead to problems such as reduced engine power, increased fuel consumption, engine vibration, or even failure to start.

[0003] Fuel injector housing inspection equipment is a device for external visual inspection of fuel injector housings. Existing fuel injector housing inspection equipment requires a robotic arm to transport each fuel injector housing from the carrier block of a conveyor device to the inspection station during the loading process. This results in a large number of robotic arm movements and low inspection efficiency. Furthermore, during the inspection of the fuel injector housing, the robotic arm exerts compressive force on the outer shell of the fuel injector housing during clamping, causing deformation or secondary damage to the surface of the fuel injector housing.

[0004] Therefore, it is necessary to provide a new technical solution to solve the above problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this application provides a clamping device for testing fuel injector housings, which can effectively clamp the fuel injector housings and transport them to the testing position without causing secondary damage to the fuel injector housings.

[0006] A clamping device for testing a fuel injector housing includes: an upper push rod, a lower push rod, and a lifting mechanism;

[0007] The upper push rod includes a first conical head disposed at its lower end; the diameter of the first conical head at its working position is larger than the inner diameter of the upper port of the fuel injector housing;

[0008] The lower push rod is fixedly connected to the lifting end of the lifting mechanism; the lower push rod includes a second conical head disposed at its upper end; the diameter of the lower push rod is not greater than the minimum outer diameter of the fuel injector housing, and the diameter of the bottom circle of the second conical head is greater than the inner diameter of the lower port of the fuel injector housing;

[0009] The axis of the upper push rod is collinear with the axis of the lower push rod; there is a gap between the lower vertex of the upper push rod and the upper vertex of the lower push rod, allowing the fuel injector housing to pass through in a vertical position along the horizontal direction.

[0010] Preferably, the first cone head includes a first cone body and a first protective sleeve fitted over the outside of the first cone body.

[0011] Preferably, the first protective sleeve is detachably fixedly connected to the first cone-shaped body.

[0012] Preferably, the second cone head includes a second cone body and a second protective sleeve fitted over the outside of the second cone body.

[0013] Preferably, the second protective sleeve is detachably fixedly connected to the second cone-shaped body.

[0014] Preferably, it further includes a rotating mechanism for driving the fuel injector housing in the clamping position to rotate along its axis; the lifting mechanism is fixedly connected to the rotating mechanism and can rotate synchronously with the rotating mechanism; the axis of the upper push rod, the axis of the lower push rod, and the rotation center of the rotating mechanism are collinear.

[0015] Preferably, it further includes a disc conveying mechanism for conveying the fuel injector housing into the clamping position; the axis of the fuel injector housing located in the clamping position is collinear with the axis of the upper push rod and the axis of the lower push rod.

[0016] Preferably, the disc conveying mechanism includes a rotating disc that rotates in a horizontal plane and a support block for supporting the fuel injector housing; the support block is fixedly connected to the rotating disc; the support block is provided with a support hole that extends vertically; the support hole is adapted to the portion of the fuel injector housing that is loaded into the support hole.

[0017] Preferably, the bearing hole comprises a first bearing portion, a second bearing portion, and a third bearing portion connected sequentially from top to bottom; the diameter of the first bearing portion is larger than the diameter of the second bearing portion; and the diameter of the second bearing portion is larger than the diameter of the third bearing portion.

[0018] Compared with the prior art, this application has at least the following beneficial effects:

[0019] 1. This utility model can effectively clamp the fuel injector housing using the upper and lower push rods and transport it to the detection position using the lifting mechanism, without causing secondary damage to the fuel injector housing.

[0020] 2. This utility model uses an upper push rod and a lower push rod to clamp the fuel injector housing in the vertical direction, which can achieve complete fixation with a small clamping force, avoiding the need for a large clamping force when clamping with existing robotic arms, and reducing the damage to the fuel injector housing during the clamping process.

[0021] 3. The upper push rod and lower push rod of this utility model are respectively provided with a first cone head and a second cone head. When clamping the fuel injector housing, the contact area is an annular surface or annular line. The contact area is small, and the damage to the fuel injector housing is small.

[0022] 4. The first cone head of this utility model includes a first protective sleeve, and the second cone head includes a second protective sleeve, which further reduces the risk of damage to the fuel injector housing. Attached Figure Description

[0023] The following sections will describe some specific embodiments of the present invention in a detailed manner by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or components. Those skilled in the art should understand that these drawings are not necessarily drawn to scale.

[0024] In the attached image:

[0025] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention;

[0026] Figure 2 This is the fuel injector housing of the present invention;

[0027] Figure 3 This is a schematic diagram of the structure of the upper push rod of this utility model;

[0028] Figure 4 This is a schematic diagram of the structure of the lower push rod of this utility model;

[0029] Figure 5 This is a schematic diagram of the overall structure of Embodiment 2 of this utility model;

[0030] Figure 6 This is a schematic diagram of the structure of the bearing block of this utility model;

[0031] Figure 7 This is a schematic diagram of the usage state of Embodiment 2 of this utility model.

[0032] The above figures include the following reference numerals:

[0033] 1. Fuel injector housing; 2. Upper push rod; 3. Lower push rod; 4. Lifting mechanism; 5. Upper fixed seat; 6. Lower fixed seat; 7. Rotating mechanism; 8. Rotary disk; 9. Bearing block; 10. Drive mechanism; 91. Block; 92. Bearing hole; 101. Upper housing; 102. Housing platform stage; 103. Lower housing; 201. First rod; 202. First cone head; 301. Second rod; 302. Second cone head; 921. First bearing part; 922. Second bearing part; 923. Third bearing part. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0035] Example 1

[0036] like Figures 1 to 4 As shown, a clamping device for testing a fuel injector housing includes: an upper push rod 2, a lower push rod 3, and a lifting mechanism 4.

[0037] The upper push rod 2 is rotatably connected to the upper fixed seat 5, and includes a first rod body 201 and a first cone head 202 disposed at its lower end. The diameter of the working position of the first cone head 201 is larger than the inner diameter of the upper port of the fuel injector housing 1.

[0038] The lifting mechanism 4 is fixedly connected to the lower fixed seat 6, and the lower push rod 3 is fixedly connected to the lifting end of the lifting mechanism 4. The lower push rod 3 includes a second rod body 301 and a second conical head 302 disposed at its upper end. The diameter of the lower push rod 3 is not greater than the minimum outer diameter of the fuel injector housing 1, and the diameter of the bottom circle of the second conical head 302 is greater than the inner diameter of the lower port of the fuel injector housing 1.

[0039] The axis of the upper push rod 2 is collinear with the axis of the lower push rod 3, and there is a gap between the lower vertex of the upper push rod 2 and the upper vertex of the lower push rod 3, which allows the fuel injector housing 1 to pass through in a vertical state along the horizontal direction, so as to ensure that the fuel injector housing 1 can be placed between the upper push rod 2 and the lower push rod 3 for clamping.

[0040] In this embodiment, the fuel injector housing 1 is a rotating body, and its overall structure can be divided into an upper housing 101 and a lower housing 103. The outer diameter of the upper housing 101 is significantly larger than that of the lower housing 103. Furthermore, a housing platform stage 102 exists between the upper housing 101 and the lower housing 103. The outer diameters of the upper housing 101 and the lower housing 103 change significantly at the housing platform stage 102.

[0041] In another embodiment of the present invention, the first cone head 201 includes a first cone body and a first protective sleeve sleeved on the outside of the first cone body.

[0042] Preferably, the first protective sleeve is detachably fixed to the first cone-shaped body. The first protective sleeve is preferably made of rubber, silicone, or plastic.

[0043] In another embodiment of the present invention, the second cone head 301 includes a second cone head body and a second protective sleeve sleeved on the outside of the second cone head body.

[0044] Preferably, the second protective sleeve is detachably fixed to the second cone-shaped body. The second protective sleeve is preferably made of rubber, silicone, or plastic.

[0045] As another embodiment of this utility model, a clamping device for detecting fuel injector housings further includes a rotating mechanism 7 for driving the fuel injector housing 1 in the clamping position to rotate along its axis. The lifting mechanism 4 is fixedly connected to the rotating mechanism 7 and can rotate synchronously with the rotating mechanism 7; the axis of the upper push rod 2, the axis of the lower push rod 3, and the rotation center of the rotating mechanism 7 are collinear.

[0046] Example 2

[0047] Example 2 is the same as Example 1, except that:

[0048] like Figure 5 and Figure 6 As shown, a clamping device for testing fuel injector housings further includes a disc conveying mechanism for conveying the fuel injector housing 1 into the clamping position, wherein the axis of the fuel injector housing 1 located in the clamping position is collinear with the axis of the upper push rod 2 and the axis of the lower push rod 3.

[0049] The disc conveying mechanism includes a drive mechanism 10, a rotating disc 8, and a support block 9 for supporting the fuel injector housing 1. The rotating disc 8 is driven by the drive mechanism 10 and can rotate in a horizontal plane under the drive of the drive mechanism 10. The support block 9 is fixedly connected to the rotating disc 8 and can rotate synchronously with the rotating disc 8.

[0050] The support block 9 includes a block body 91, on which a support hole 92 is provided in a vertical direction. The support hole 92 is adapted to the portion of the fuel injector housing 1 that is loaded into the support hole 92.

[0051] Specifically, the bearing hole 92 includes, from top to bottom, a first bearing portion 921, a second bearing portion 922, and a third bearing portion 923 connected in sequence, and the centers of the first bearing portion 921, the second bearing portion 922, and the third bearing portion 923 are collinear. The diameter of the first bearing portion 921 is larger than the diameter of the second bearing portion 922; the diameter of the second bearing portion 922 is larger than the diameter of the third bearing portion 923.

[0052] The inner diameter of the first bearing portion 921 is adapted to the upper half of the shell 101, the inner diameter of the second bearing portion 922 is adapted to the shell platform stage 102, and the inner diameter of the third bearing portion 923 is adapted to the lower half of the shell 103.

[0053] like Figure 7 As shown, during operation, the fuel injector housing 1, loaded within the support block 9, rotates synchronously with the rotating disk 8 under the drive of the drive mechanism 10. Upon reaching the clamping position, the lower push rod 3 rises under the drive of the lifting mechanism 4, pushing the fuel injector housing 1 out of the support block 9 and rising to the detection position with the lower push rod 3. At this time, the first cone head 201 and the second cone head 301 are respectively inserted into the upper and lower ends of the fuel injector housing 1, respectively, and tightly abut against the upper and lower ends of the fuel injector housing 1, thus fixing the fuel injector housing 1 under the squeezing action of the upper push rod 2 and the lower push rod 3. Driven by the rotating mechanism 7, the fuel injector housing 1 rotates around its axis due to the rotation of the lower push rod 3. Since the upper push rod 2 and the lower push rod 3 are located at the upper and lower ends of the fuel injector housing 1 respectively, they do not obstruct the outer circumference of the fuel injector housing 1, allowing the external detection device to effectively detect the entire outer circumference area of ​​the fuel injector housing 1.

[0054] Similarly, after the fuel injector housing 1 is inspected, the lower push rod 3 is lowered by the lifting mechanism 4 and reloaded into the support block 9, thus completing the inspection of the fuel injector housing 1 loaded into the support block 9.

[0055] According to the above process, with the intermittent operation of the disc conveyor mechanism, each fuel injector housing 1 is transported to the clamping position and lifted to the inspection position, which can realize the automated inspection of the fuel injector housing 1.

[0056] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0057] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0058] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0059] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A clamping device for detecting fuel injector housings, characterized in that, include: Upper push rod, lower push rod, and lifting mechanism; The upper push rod includes a first conical head disposed at its lower end; the diameter of the first conical head at its working position is larger than the inner diameter of the upper port of the fuel injector housing; The lower push rod is fixedly connected to the lifting end of the lifting mechanism; the lower push rod includes a second conical head disposed at its upper end; the diameter of the lower push rod is not greater than the minimum outer diameter of the fuel injector housing, and the diameter of the bottom circle of the second conical head is greater than the inner diameter of the lower port of the fuel injector housing; The axis of the upper push rod is collinear with the axis of the lower push rod; there is a gap between the lower vertex of the upper push rod and the upper vertex of the lower push rod, allowing the fuel injector housing to pass through in a vertical position along the horizontal direction.

2. The clamping device for detecting fuel injector housings as described in claim 1, characterized in that, The first cone head includes a first cone body and a first protective sleeve fitted over the outside of the first cone body.

3. The clamping device for detecting fuel injector housings as described in claim 2, characterized in that, The first protective sleeve is detachably and fixedly connected to the first cone-shaped body.

4. The clamping device for detecting fuel injector housings as described in claim 1, characterized in that, The second cone head includes a second cone body and a second protective sleeve fitted over the outside of the second cone body.

5. The clamping device for detecting fuel injector housings as described in claim 4, characterized in that, The second protective sleeve is detachably and fixedly connected to the second cone-shaped body.

6. The clamping device for detecting fuel injector housings as described in any one of claims 1-5, characterized in that, It also includes a rotating mechanism for driving the fuel injector housing in the clamping position to rotate around its axis; the lifting mechanism is fixedly connected to the rotating mechanism and can rotate synchronously with the rotating mechanism; the axis of the upper push rod, the axis of the lower push rod, and the rotation center of the rotating mechanism are collinear.

7. The clamping device for detecting fuel injector housings as described in claim 6, characterized in that, It also includes a disc conveying mechanism for conveying the fuel injector housing into the clamping position; the axis of the fuel injector housing located in the clamping position is collinear with the axis of the upper push rod and the axis of the lower push rod.

8. The clamping device for detecting fuel injector housings as described in claim 7, characterized in that, The disc conveying mechanism includes a rotating disc that rotates in a horizontal plane and a support block for supporting the fuel injector housing; the support block is fixedly connected to the rotating disc; the support block is provided with a support hole that runs through in a vertical direction; the support hole is adapted to the portion of the fuel injector housing that is loaded into the support hole.

9. The clamping device for detecting fuel injector housings as described in claim 8, characterized in that, The bearing hole comprises, from top to bottom, a first bearing portion, a second bearing portion, and a third bearing portion that are connected in sequence; the diameter of the first bearing portion is larger than the diameter of the second bearing portion; The diameter of the second supporting part is larger than the diameter of the third supporting part.

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