Flexible automatic press-fitting mechanism for spark plug sheath of cylinder cover

Abstract

The invention discloses a flexible cylinder cover spark plug sheath automatic press-fitting mechanism which comprises a sheath distributing mechanism used for automatically feeding spark plug sheaths. The cylinder cover receiving mechanism is used for receiving cylinder covers; the sheath transferring mechanism is used for transferring the spark plug sheath to the receiving mechanism; and the sheath press-fitting mechanism is used for aligning and press-fitting the spark plug sheaths to the cylinder cover one by one. The device has the advantages of being high in assembly efficiency, good in compatibility and the like, potential safety hazards existing in manual operation can be avoided after the device is used, and meanwhile the device can be compatible with automatic press fitting of jackets with different intervals and the like.

Description

Technical Field

[0001] The invention belongs to the technical field of cylinder head spark plug assembly, and in particular relates to a flexible cylinder head spark plug sleeve automatic press-fitting mechanism. Background Art

[0002] With the rapid development of the automobile industry, the level of automation in the engine manufacturing process has been continuously improved. However, in the engine cylinder head assembly line, the press-fitting process of the spark plug boot still has obvious technical bottlenecks. At present, due to the differences in the press-fitting positions of the boots of cylinder head parts of different models, as well as the changes in the press-fitting angles and spacing of the boots, the traditional automated assembly method is difficult to meet production needs.

[0003] In the prior art, the installation of cylinder head spark plug sleeves mainly adopts a semi-automatic mode, that is, the sleeves are manually installed in conjunction with the automatic press-fitting of the equipment. The specific process flow includes: after the cylinder head parts are in place and flipped to the press-fitting position, the operator needs to manually take out 4 sleeves from the material box and dip them in oil, and then place them in the corresponding sleeve hole positions respectively, and finally leave the work area to start the equipment for automatic press-fitting. This operation method has obvious shortcomings: each cycle takes about 50 seconds to complete, which barely meets the production cycle requirement of 52 seconds; at the same time, the operator needs to repeatedly bend over, which is not only labor-intensive, but also has safety hazards; in addition, the manual placement of the sleeves is prone to deflection, resulting in press-fitting quality problems.

[0004] What is even more difficult is that the current engine cylinder head assembly line needs to produce three different models, the sleeve installation angles of these models are 8 degrees and 12 degrees, and the spacing is 80 mm and 88 mm respectively. Since the existing press-fitting mechanism is not compatible with models with different angles, it is necessary to rely on manual operation to adapt to this difference. This situation not only increases labor costs, but also seriously affects production efficiency.

[0005] With the improvement of industrial automation level, the acceleration of production pace and the continuous increase of labor costs, the traditional semi-automatic operation mode has been difficult to adapt to the requirements of modern engine production lines. Therefore, the development of an automatic jacket pressing device that can adapt to different cylinder head models and completely replace manual operation has become a technical problem that needs to be solved in the production field of engine cylinder head subassembly lines. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide a flexible cylinder head spark plug sleeve automatic pressing mechanism for the technical defects existing in the prior art, which has the advantages of high assembly efficiency and good compatibility. After using the present invention, the safety hazards of manual operation can be avoided. At the same time, the present invention can be compatible with the automatic pressing of sleeves with different spacings.

[0007] The technical solution adopted by the present invention to solve its technical problem is: the present invention discloses a flexible cylinder head spark plug sleeve automatic pressing mechanism, including a sleeve material distribution mechanism, which is used for automatically feeding the spark plug sleeve; a cylinder head material receiving mechanism, which is used for receiving the cylinder head; a sleeve material transfer mechanism, which is used for transferring the spark plug sleeve to the material receiving mechanism; and a sleeve pressing mechanism, which is used for pressing the spark plug sleeves one by one onto the cylinder head.

[0008] In a preferred embodiment of the present invention, the sheath material distribution mechanism includes a material storage, a first linear module is arranged below the discharge port of the sheath material distribution mechanism, a displacement end of the first linear module is connected to a sheath carrier, and a sheath positioning groove is arranged on the sheath carrier.

[0009] In a preferred embodiment of the present invention, the material storage includes a sheath storage chamber and a blanking chamber, the blanking chamber is vertically extended, the width of the blanking chamber corresponds to the diameter of the sheath, and a retractable upper baffle plate and a lower baffle plate are arranged in the blanking chamber, and only one sheath can be accommodated between the upper baffle plate and the lower baffle plate.

[0010] In a preferred embodiment of the present invention, sensors located at different heights for detecting the number of falling sheaths are arranged in the dropping chamber.

[0011] In a preferred embodiment of the present invention, a material shifting assembly for realizing smooth material shifting of the sheaths one by one is arranged at the entrance of the blanking chamber, and the material shifting assembly includes a first cylinder and a second cylinder arranged along a setting direction, and a first material shifting plate for shifting a sheath from top to bottom is arranged at the displacement end of the first cylinder, and a second material shifting plate for lifting the remaining sheaths from bottom to top is arranged at the displacement end of the second cylinder.

[0012] In a preferred embodiment of the present invention, the sheath material moving mechanism comprises a manipulator and a sheath clamping assembly connected to the manipulator, and the number of the sheath clamping assemblies corresponds to the number of the sheath positioning grooves on the sheath carrier.

[0013] In a preferred embodiment of the present invention, the sheath clamping assembly comprises a driving cylinder and a pair of clamping jaws connected to the driving cylinder, and at least one of the clamping jaws is provided with an O-ring to prevent the sheath from falling off during the clamping process.

[0014] In a preferred embodiment of the present invention, the cylinder head material receiving mechanism includes a roller bed and a rotating drive device for driving the roller bed to rotate and move an angle, and a limiting assembly and a wedging assembly for supporting the roller bed during the pressing process are arranged below the roller bed, and the limiting assembly includes a second linear module and a limiting bolt connected to the displacement end of the second linear module, and the wedging assembly includes a third linear module, and the third linear module and the second linear module are arranged perpendicular to each other, and a first wedging block is arranged at the moving end of the third linear module, and a second wedging block arranged corresponding to the first wedging block is arranged on the roller bed.

[0015] In a preferred embodiment of the present invention, the jacket pressing mechanism comprises a multi-axis motion unit and a pressing head connected to a displacement end of the multi-axis motion unit, and the pressing head is arranged above the cylinder head receiving mechanism and extends in a vertical direction.

[0016] In a preferred embodiment of the present invention, the pressure head is a floating pressure head, which includes a main body portion for connecting the multi-axis motion unit, a hollow guide sleeve is provided at the end of the main body portion, a sheath connector is inserted in the hollow guide sleeve, the end of the sheath connector and the inclined surface of the hollow guide sleeve are matched, a spring is provided between the sheath connector and the main body portion, the outer diameter of the sheath connector corresponds to the inner diameter of the sheath, and a plunger for clamping the sheath which can be radially retracted and extended is provided on the outer peripheral surface of the sheath connector.

[0017] The beneficial effects of the present invention are as follows: First, the present invention realizes the fully automated loading, conveying and pressing of spark plug sleeves through the coordinated cooperation of the sleeve distributing mechanism, the cylinder head receiving mechanism, the sleeve shifting mechanism and the sleeve pressing mechanism, and completely solves various problems caused by manual operation in the traditional semi-automatic production method. Among them, the sleeve distributing mechanism adopts the design of the upper and lower baffle plates to ensure the accurate unloading of the sleeves one by one; the setting of the material shifting assembly further ensures the smooth unloading of the sleeves, and effectively prevents the sleeves from getting stuck during the unloading process.

[0018] Secondly, the sheath material transfer mechanism of the present invention adopts a scheme of a manipulator cooperating with a sheath clamping assembly, and an O-ring is arranged on the clamping jaws to effectively prevent the sheath from accidentally falling off during the clamping process. At the same time, the number of sheath clamping assemblies corresponds to the sheath positioning grooves one by one, ensuring synchronous clamping and conveying, and significantly improving production efficiency.

[0019] Thirdly, the present invention innovatively designs the matching structure of the rotary drive device, the limit assembly and the wedging assembly in the cylinder head receiving mechanism. Through the precise rotation positioning of the roller bed, the limit bolts and the locking of the wedging block, the cylinder head is stably supported during the press-fitting process (the limit assembly and the wedging assembly can effectively bear the force generated during the press-fitting), laying the foundation for the precise press-fitting of the sleeve.

[0020] Finally, the sleeve pressing mechanism of the present invention adopts a floating pressure head design, and realizes automatic compensation during the pressing process through the clever cooperation of the spring, the hollow guide sleeve and the sleeve connector. The automatic compensation is realized by the floating sleeve connector, because there will be a gap between the sleeve connector and the hollow guide sleeve, that is, the central axis of the sleeve connector can deviate from the central axis of the sleeve connector. During the pressing process, after the sleeve connector is inserted into the sleeve, the plunger on the sleeve connector will prevent the sleeve from falling. When the sleeve connector drives the sleeves to be installed one by one to the position marked by the cylinder head, it can automatically compensate for the position deviation. At the same time, the retractable plunger arranged on the periphery of the sleeve connector ensures the reliable fixation of the sleeve during the pressing process, and effectively avoids quality problems such as pressing deviation.

[0021] The present invention not only completely replaces the traditional manual operation mode and significantly improves production efficiency, but also ensures the accuracy and reliability of the jacket press-fitting through the innovative design of each mechanism. In particular, its flexible characteristics enable the press-fitting mechanism to adapt to the jacket press-fitting requirements of different types of cylinder heads, and has extremely strong practical value. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0023] Figure 1 It is a schematic diagram of a flexible cylinder head spark plug sheath automatic press-fitting mechanism of the present invention;

[0024] Figure 2 It is a schematic diagram of a sheath distributing mechanism of a flexible cylinder head spark plug sheath automatic press-fitting mechanism of the present invention;

[0025] Figure 3 It is a schematic diagram of a material storehouse of a flexible cylinder head spark plug sheath automatic press-fitting mechanism of the present invention;

[0026] Figure 4 It is a schematic diagram of the internal structure of a sheath distributing mechanism of a flexible cylinder head spark plug sheath automatic press-fitting mechanism of the present invention;

[0027] Figure 5 It is a schematic diagram of a sheath moving mechanism of a flexible cylinder head spark plug sheath automatic press-fitting mechanism of the present invention;

[0028] Figure 6It is a schematic diagram of a sheath clamping assembly of a flexible cylinder head spark plug sheath automatic press-fitting mechanism of the present invention;

[0029] Figure 7 It is a top view of a sheath clamping assembly of a flexible cylinder head spark plug sheath automatic press-fitting mechanism of the present invention;

[0030] Figure 8 It is a schematic diagram of a cylinder head material receiving mechanism of a flexible cylinder head spark plug sheath automatic press-fitting mechanism of the present invention;

[0031] Fig. 9 It is a schematic diagram of a cylinder head material receiving mechanism of a flexible cylinder head spark plug sheath automatic press-fitting mechanism of the present invention;

[0032] Fig.10 It is a schematic diagram of a limit assembly of a flexible cylinder head spark plug sheath automatic press-fitting mechanism of the present invention;

[0033] Fig.11 It is a schematic diagram of a wedge-tightening assembly of a flexible cylinder head spark plug sheath automatic press-fitting mechanism of the present invention;

[0034] Fig.12 It is a schematic diagram of a sleeve pressing mechanism of a flexible cylinder head spark plug sleeve automatic pressing mechanism of the present invention;

[0035] Fig.13 It is a schematic diagram of a pressing head of a flexible cylinder head spark plug sheath automatic pressing mechanism of the present invention;

[0036] Fig.14 It is a cross-sectional view of a pressing head of a flexible cylinder head spark plug sheath automatic pressing mechanism of the present invention;

[0037] Fig.15 is a schematic diagram of the cylinder head to be assembled;

[0038] Fig.16 Schematic diagram of the cylinder head to be assembled. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0040] Embodiment 1:

[0041] In order to make the technical solution of the present invention clearer, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0042] like Figure 1As shown, the flexible cylinder head spark plug sleeve automatic press-fitting mechanism provided by the present invention is mainly composed of four functional units: a sleeve material distribution mechanism 1, a cylinder head material receiving mechanism 2, a sleeve material moving mechanism 3 and a sleeve press-fitting mechanism 4. These mechanisms work together through a precise electrical control system to realize the fully automated feeding, conveying and press-fitting process of the spark plug sleeve.

[0043] like Figure 2-4 As shown, the core component of the sheath dispensing mechanism 1 is a material warehouse 11, which is used to store and distribute spark plug sheaths. A first linear module 12 is arranged directly below the discharge port of the material warehouse 11. The linear module is driven by a servo motor to ensure motion accuracy and position repeatability. The displacement end of the first linear module 12 is connected to a specially designed sheath carrier 13, on which a number of sheath positioning grooves 131 are evenly distributed. The design of these positioning grooves fully considers the size characteristics of the sheath (there is only one type of sheath in common), ensuring that the sheath can be placed firmly and is convenient for subsequent grasping.

[0044] like Figure 2-4 As shown, the internal structure of the material storage 11 includes an upper sheath storage chamber 111 and a lower material drop chamber 112. The sheath storage chamber 111 has sufficient volume to store the number of sheaths required for multiple working cycles, reducing the frequency of manual material replenishment. The material drop chamber 112 adopts a vertically extended design, and its inner cavity width is precisely matched with the outer diameter of the sheath, ensuring that the sheath can fall smoothly without getting stuck. A retractable upper baffle plate 113 and a lower baffle plate 114 are arranged in the blanking chamber 112. The spacing between the two baffle plates is precisely calculated to allow only one sheath to pass through, thereby realizing precise separation of a single sheath. When blanking one by one, the upper baffle plate 113 is first retracted and the lower baffle plate 114 is extended. At this time, the sheath is supported by the lower baffle plate 114. Then the upper baffle plate 113 is extended and the lower baffle plate 114 remains extended to complete the separation. Finally, the upper baffle plate 113 remains extended and the lower baffle plate 114 is retracted to complete the blanking. Entering a sheath blanking cycle. In order to realize precise blanking control, multiple sensors 115 are installed at different heights of the blanking chamber 112 to monitor the falling state and quantity of the sheath in real time.

[0045] like Figure 3-4 As shown, in order to ensure that the sleeves can fall down reliably one by one, an innovative material-dispensing assembly 116 is designed at the entrance of the material-dispensing chamber 112. The assembly includes a first cylinder 1161 and a second cylinder 1162 arranged along the setting direction, and the two cylinders work in coordination through precise timing control. Among them, the displacement end of the first cylinder 1161 is connected to a first material-dispensing plate 1163, which is used to push the lowest sleeve downward; the displacement end of the second cylinder 1162 is connected to a second material-dispensing plate 1164, whose function is to lift the remaining sleeves upward, effectively preventing multiple sleeves from falling at the same time. This dual-cylinder coordination design significantly improves the reliability of material distribution.

[0046] like Figure 5-6 As shown, the sheath material transfer mechanism 3 uses a high-precision industrial manipulator 31 as the core execution unit. A specially designed sheath clamping assembly 32 is installed at the end of the manipulator 31, and its number corresponds to the positioning grooves 131 on the sheath carrier 13. Each sheath clamping assembly 32 is equipped with an independent driving cylinder 321, which drives a pair of precision-machined clamping jaws 322 to open and close. In order to prevent the sheath from slipping or falling off during the clamping process, a highly elastic O-ring is set on the inner side of at least one clamping jaw 322 to provide reliable friction.

[0047] like Figure 8-11 As shown, the main body of the cylinder head receiving mechanism 2 is a high-strength roller bed 21, and precise angle adjustment can be achieved through the rotary drive device 22. In order to ensure stability during the press-fitting process, two protective mechanisms, a limit assembly 23 and a wedging assembly 24, are set below the roller bed 21. The limit assembly 23 includes a second linear module 231, and its displacement end is connected with a precise limit bolt 232, which can achieve precise positioning of the roller bed. The wedging assembly 24 adopts a third linear module 241 arranged perpendicular to each other, and the first wedging block 242 set at its moving end cooperates with the second wedging block 243 on the roller bed 21 to provide a stable mechanical locking function. The first wedging block 242 can be set as a reaction block with two stepped inclined surfaces at different heights (for example, two inclined surfaces with an angle of 8° and an angle of 12°) to achieve the switching of press-fitting angles of different models and prevent shaking during press-fitting.

[0048] like Figure 12-14 As shown, the sheath pressing mechanism 4 adopts a high-precision multi-axis motion unit 41 as a guide system, and a specially designed pressing head 42 is connected to its displacement end. The multi-axis motion unit 41 can be selected to be spliced ​​with a linear module that can move along three axes of the Cartesian coordinate system. The pressing head 42 adopts a floating structure design, including a main body 421 connected to the multi-axis motion unit 41, and a precisely machined hollow guide sleeve 422 is provided at its end. A sheath connector 423 is inserted in the guide sleeve, and its end forms an inclined surface with the guide sleeve 422 to achieve adaptive adjustment at a certain angle. A carefully selected spring 424 is arranged between the sheath connector 423 and the main body 421 to provide appropriate preload. The outer diameter of the sheath connector 423 is precisely matched with the inner diameter of the sheath, and a radially retractable clamping plunger 425 is also arranged on its outer circumference to ensure that the sheath will not fall off during the pressing process. Plunger 425 can use a ball head plunger. The ball head plunger is based on the weight of the sheath, the friction coefficient with the plunger, the design tolerance of the cone surface of the pressure rod + the inner diameter of the guide sleeve + the spring to ensure that a certain error can be tolerated when the pressure head takes the material and presses it.

[0049] In the actual working process, the operator first replenishes the sheaths into the material warehouse 11. The material shifting assembly 116 accurately delivers the sheaths into the blanking chamber 112 one by one through the coordinated action of the first cylinder 1161 and the second cylinder 1162. After the manipulator 31 accurately grasps the sheath through the sheath clamping assembly 32, it first moves to the oil injection station to complete the lubrication process, and then accurately moves to the press-fitting station. When the cylinder head completes the flipping and reaches the press-fitting position, the pressure head 42 moves to the material picking position to pick up the material. After the material picking is completed, the clamp 322 opens, and the pressure head 42 performs a precise press-fitting action. The entire system continuously operates in a cycle according to the preset action sequence and timing until the press-fitting of all 4 sheaths is completed. Through this fully automated design, not only the production efficiency is improved, but also the stability and reliability of the press-fitting quality are ensured.

[0050] Example 2

[0051] Next, the present invention provides Example 2, which is a specific method for using the flexible cylinder head spark plug sheath automatic press-fitting mechanism of the present invention.

[0052] In this embodiment, the most common four-cylinder engine cylinder head spark plug sleeve press-fitting is taken as an example to explain in detail the working process and operation method of the device of the present invention:

[0053] Step 1: Equipment initialization and parameter setting

[0054] 1. After the equipment is powered on, each mechanism automatically returns to the initial position, including the manipulator 31 returning to zero, the pressure head 42 rising to a safe position, and the roller bed 21 being in a horizontal state;

[0055] 2. According to the cylinder head model currently produced, select the corresponding program on the control panel, and the system will automatically load the corresponding sleeve pressing angle (8° / 12°) and spacing (80mm / 88mm) parameters;

[0056] 3. Check the number of sheaths in the material warehouse 11 to ensure that there are enough sheaths in the sheath storage chamber 111 to maintain production needs. It is recommended to reserve at least 200 pieces;

[0057] 4. Check the oil level and air pressure of the fuel injection device to ensure that the fuel injection system is working properly.

[0058] Step 2: Automatic loading stage

[0059] 1. After starting the equipment, the material shifting assembly 116 starts to work. The first cylinder 1161 drives the first material shifting plate 1163 to move downward, pushing the bottommost sheath downward; at the same time, the second cylinder 1162 drives the second material shifting plate 1164 to move upward, lifting the remaining sheaths to achieve the separation of a single sheath;

[0060] 2. The sheath falls through the material dropping chamber 112, and the upper and lower baffle plates (113, 114) cooperate to ensure that the sheaths fall one by one in an orderly manner;

[0061] 3. The sensor 115 monitors the falling state of the sheath in real time. Once an abnormality is detected (such as the sheath being stuck or multiple sheaths falling at the same time), the system will immediately alarm and stop working.

[0062] Step 3: Sheath delivery and oil injection

[0063] 1. After the sheath successfully falls into the positioning groove 131 of the sheath carrier 13, the manipulator 31 carries the sheath clamping assembly 32 and moves to the material picking position;

[0064] 2. The driving cylinder 321 drives the clamping jaws 322 to open and then clamp the sheath. The O-ring provides sufficient friction to prevent the sheath from falling off during the movement;

[0065] 3. The manipulator 31 moves the jacket to the oil injection station to complete the lubrication process on the inner wall of the jacket;

[0066] 4. After the oil injection is completed, the robot 31 moves the sheath to the top of the pressing station and waits.

[0067] Step 4: Cylinder head positioning and press fitting

[0068] 1. After the cylinder head is transported to the position by the roller bed 21, the rotary drive device 22 drives the roller bed 21 to rotate to a preset angle;

[0069] 2. The second linear module 231 pushes the limit bolt 232 to extend, thereby achieving accurate positioning of the roller bed 21;

[0070] 3. The third linear module 241 drives the first wedge block 242 to engage with the second wedge block 243 to firmly lock the roller bed 21;

[0071] 4. The multi-axis motion unit 41 drives the pressure head 42 to descend, the sheath connector 423 extends into the inner cavity of the sheath, and the holding plunger 425 extends radially out to fix the sheath;

[0072] 5. The pressure head 42 carries the sheath downward and uses the floating pressure head structure to automatically compensate for the deviation of the installation angle.

[0073] Press the boot precisely into place.

[0074] Step 5: Cycle Operation

[0075] 1. After completing the press-fitting of a sheath, the press head 42 returns to the safe position;

[0076] 2. The robot 31 moves synchronously to the next pressing position;

[0077] 3. Repeat the above pressing action until all 4 sheaths are pressed;

[0078] 4. After the system detects the press-fitting completion signal, the roller bed 21 is unlocked and rotated back to the horizontal position, and the cylinder head that has been press-fitted is transported to the next station.

[0079] When using the present invention:

[0080] 1.1 / 100 units are randomly inspected to confirm the press-fitting height to ensure that the press-fitting height meets the process requirements;

[0081] 2. Check the wear of the O-ring regularly and replace it if necessary;

[0082] 3. Keep the blanking chamber 112 clean to prevent oil and dust from affecting the sheath from falling;

[0083] 4. If the sheath is stuck and the alarm sounds, manual inspection and cleaning are required before resuming production.

[0084] Through the above-mentioned operation method, the automatic pressing mechanism of the present invention can realize continuous and stable pressing of the sheath, and the equipment cycle time is controlled within 42 seconds, which improves the efficiency by about 16% compared with traditional manual operation, and the pressing quality is more stable and reliable.

[0085] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the appended claims of the present invention.

Claims

1. A flexible cylinder head spark plug sheath automatic press-fitting mechanism, characterized in that: include Sheath feeding mechanism, used for automatic feeding of spark plug sheaths; Cylinder head receiving mechanism, used for receiving cylinder head; A sheath transfer mechanism, used for transferring the spark plug sheath to the receiving mechanism; The sleeve pressing mechanism is used for pressing the spark plug sleeves onto the cylinder head one by one.

2. The flexible cylinder head spark plug sheath automatic press-fitting mechanism according to claim 1 is characterized in that: The sheath material distribution mechanism comprises a material storage, a first linear module is arranged below the material outlet of the sheath material distribution mechanism, a displacement end of the first linear module is connected to a sheath carrier, and a sheath positioning groove is arranged on the sheath carrier.

3. The flexible cylinder head spark plug sheath automatic press-fitting mechanism according to claim 2 is characterized in that: The material storage includes a sheath storage chamber and a blanking chamber, the blanking chamber is vertically extended, the width of the blanking chamber corresponds to the diameter of the sheath, and a retractable upper baffle plate and a lower baffle plate are arranged in the blanking chamber, and only one sheath can be accommodated between the upper baffle plate and the lower baffle plate.

4. The flexible cylinder head spark plug sheath automatic press-fitting mechanism according to claim 2 is characterized in that: The drop chamber is provided with sensors at different heights for detecting the number of dropped sheaths.

5. The flexible cylinder head spark plug sheath automatic press-fitting mechanism according to claim 2 is characterized in that: A material-push assembly for realizing smooth dropping of the sheaths one by one is arranged at the entrance of the blanking chamber, and the material-push assembly includes a first cylinder and a second cylinder arranged along a setting direction, a first material-push plate for shifting a sheath from top to bottom is arranged at the displacement end of the first cylinder, and a second material-push plate for lifting the remaining sheaths from bottom to top is arranged at the displacement end of the second cylinder.

6. The flexible cylinder head spark plug sheath automatic press-fitting mechanism according to claim 1, characterized in that: The sheath material moving mechanism comprises a manipulator and a sheath clamping assembly connected to the manipulator, and the number of the sheath clamping assemblies corresponds to the number of the sheath positioning grooves on the sheath carrier.

7. The flexible cylinder head spark plug sheath automatic press-fitting mechanism according to claim 6 is characterized in that: The sheath clamping assembly comprises a driving cylinder and a pair of clamping jaws connected to the driving cylinder, and at least one of the clamping jaws is provided with an O-ring for preventing the sheath from falling off during the clamping process.

8. The flexible cylinder head spark plug sheath automatic press-fitting mechanism according to claim 1, characterized in that: The cylinder head material receiving mechanism includes a roller bed and a rotating drive device for driving the roller bed to rotate and move an angle. A limiting assembly and a wedging assembly for supporting the roller bed during the pressing process are arranged below the roller bed. The limiting assembly includes a second linear module and a limiting bolt connected to the displacement end of the second linear module. The wedging assembly includes a third linear module. The third linear module and the second linear module are arranged perpendicular to each other. The moving end of the third linear module is provided with a first wedging block, and the roller bed is provided with a second wedging block arranged corresponding to the first wedging block.

9. The flexible cylinder head spark plug sheath automatic press-fitting mechanism according to claim 1, characterized in that: The sheath pressing mechanism comprises a multi-axis motion unit and a pressing head connected to the displacement end of the multi-axis motion unit, and the pressing head is arranged above the cylinder head receiving mechanism and extends in the vertical direction.

10. The flexible cylinder head spark plug sleeve automatic press-fitting mechanism according to claim 9, characterized in that: The pressure head is a floating pressure head, which includes a main body part for connecting the multi-axis motion unit, a hollow guide sleeve is provided at the end of the main body part, a sheath connector is inserted in the hollow guide sleeve, the end of the sheath connector and the inclined surface of the hollow guide sleeve are matched, a spring is provided between the sheath connector and the main body part, the outer diameter of the sheath connector corresponds to the inner diameter of the sheath, and a plunger for clamping the sheath which can be radially extended and retracted is provided on the outer peripheral surface of the sheath connector.

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