Hot riveting equipment for cylinder cover cap

Abstract

The utility model discloses hot riveting equipment for a cylinder cover cap, which comprises a rack, a first fixing plate connected with the bottom of the rack, a second fixing plate connected with the top of the rack, a bottom plate arranged between the top and the bottom of the rack, a hot riveting assembly, a positioning assembly, a pressing assembly and a detection assembly, the pressing assembly is used for pressing the cylinder cover on the bottom plate, the positioning assembly is used for enabling the cylinder cover to be installed in place on the bottom plate and positioning a hot riveting position, and the detection assembly is used for detecting whether the cylinder cover is installed on the bottom plate or not and whether a one-way valve diaphragm and a check ring are placed in the cylinder cover or not; the hot riveting assembly comprises a first fixing block, a first driver, a first sensor and a pressing head, the first fixing block is fixedly connected with the bottom face of the second fixing plate, the first driver is fixedly connected with the first fixing block, and the first sensor and the pressing head are both fixedly connected with one end of the first driver. According to the hot riveting equipment, the hot riveting depth can be controlled, and the assembling efficiency and the qualification rate of the cylinder cover can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of cylinder cover assembly, and particularly relates to a hot riveting device for hot riveting a one-way valve diaphragm and a retaining ring in a cylinder cover. Background Art

[0002] The cylinder cover is a cover on the engine cylinder that prevents external impurities from entering the engine. When the engine is running, the exhaust gas generated must be discharged, so a one-way valve diaphragm needs to be installed to control the exhaust gas discharge. The function of the one-way valve diaphragm is to adjust the amount and speed of exhaust gas discharge by controlling the airflow in the pipeline. Its opening and closing are achieved through the deformation of the elastic diaphragm. When the diaphragm is in the closed state, the exhaust gas pipeline is completely closed and the exhaust gas cannot flow out; when the exhaust gas emission needs to be controlled, the diaphragm will be naturally bent by external pressure and open the small hole. As the pressure changes, the diaphragm will automatically restore its original shape and close the small hole.

[0003] Since the position of the one-way valve diaphragm needs to be fixed, a hole is opened in the middle of the one-way valve mold so that it fits exactly with the column on the cylinder cover to prevent it from shifting left and right. Although the diaphragm cannot shift left and right, it will also shake in the up and down directions, so the one-way valve diaphragm is installed on the column and fixed with a retaining ring. The retaining ring needs to be hot-riveted with the cover to connect and fix it, and most of the existing hot riveting methods are manual hot riveting. Manual hot riveting not only requires a lot of manpower, but also cannot control the depth of hot riveting. If the hot riveting depth is not in place or too deep, it will affect the working state of the one-way valve diaphragm, thereby affecting work efficiency. Utility Model Content

[0004] In view of this, in order to solve the problems of the prior art, the utility model provides a hot riveting device for a cylinder cover, which can control the hot riveting depth and improve the assembly efficiency and qualification rate of the cylinder cover.

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

[0006] A hot riveting device for a cylinder cover, comprising a frame, a first fixing plate connected to the bottom of the frame, a second fixing plate connected to the top of the frame, a bottom plate arranged between the top and the bottom of the frame, a hot riveting assembly, a positioning assembly, a pressing assembly and a detection assembly, wherein the bottom plate is used to place the cylinder cover, the pressing assembly is used to press the cylinder cover onto the bottom plate, the positioning assembly is used to install the cylinder cover into place on the bottom plate and locate the hot riveting position, the detection assembly is used to check whether the cylinder cover is installed on the bottom plate and whether a one-way valve diaphragm and a retaining ring are placed in the cylinder cover; the hot riveting assembly comprises a first fixing block, a first driver, a first sensor and a pressure head, the first fixing block is fixedly connected to the bottom surface of the second fixing plate, the first driver is fixedly connected to the first fixing block, the first sensor and the pressure head are both fixedly connected to one end of the first driver, and the hot riveting assembly is used to hot rivet the one-way valve diaphragm and the retaining ring.

[0007] According to some preferred implementation aspects of the utility model, the cylinder cover has a pipeline, the one-way valve diaphragm and the retaining ring are located in the pipeline, and the length directions of the first sensor and the pressure head are parallel to the length direction of the pipeline.

[0008] According to some preferred implementation aspects of the utility model, the orthographic projection of the first sensor on the plane where the top surface of the pipeline is located is located in the area enclosed by the outer wall and the inner wall of the pipeline, and the axis line of the pressure head coincides with the axis line of the pipeline.

[0009] According to some preferred implementation aspects of the utility model, the positioning assembly includes a plurality of guide sleeves arranged on the first fixed plate, a plurality of guide columns arranged on the second fixed plate, and a plurality of positioning blocks fixedly arranged on the base plate, and the guide sleeves and the guide columns are arranged in a one-to-one correspondence.

[0010] According to some preferred implementation aspects of the utility model, the guide sleeve and the guide column are located between the first fixing plate and the second fixing plate, the axis center line of the guide sleeve coincides with the axis center line of the guide column, and the guide sleeve is used for inserting the guide column.

[0011] According to some preferred implementation aspects of the utility model, the base plate is parallel to the first fixed plate and the second fixed plate, and the plurality of positioning blocks are used together to determine the placement position of the cylinder cover on the base plate, and the positioning blocks are in contact with the outer edge of one side of the cylinder cover close to the base plate.

[0012] According to some preferred implementation aspects of the utility model, the positioning assembly further includes a second driver for driving the second fixing plate to move up and down, and the second driver is connected to the top of the frame.

[0013] According to some preferred implementation aspects of the utility model, the detection assembly includes a support frame, two fixed rods fixedly connected to the top of the support frame and arranged in parallel, a second sensor fixedly connected to one end of one of the fixed rods, a third sensor fixedly connected to one end of the other fixed rod, and a third driver for driving the support frame to move back and forth, the second sensor and the third sensor are both located at one end of the fixed rod away from the support frame, the second sensor is used to detect whether the one-way valve diaphragm is installed in the pipe of the cylinder cover, and the third sensor is used to detect whether the retaining ring is installed in the pipe of the cylinder cover.

[0014] According to some preferred implementation aspects of the utility model, the detection assembly further includes a fourth sensor fixedly disposed on a side of the base plate close to the second fixing plate, and the fourth sensor is used to detect whether the cylinder cover is installed on the base plate.

[0015] According to some preferred implementation aspects of the utility model, the clamping assembly includes a plurality of clamping cylinders fixedly connected to the first fixed plate, and the clamping cylinder includes a cylinder pressure plate. When the cylinder cover is placed in a fixed position on the base plate, the cylinder pressure plate of the clamping cylinder presses against the surface of the cylinder cover to press the cylinder cover onto the base plate.

[0016] Compared with the prior art, the utility model is advantageous in that: a hot riveting device for a cylinder cover of the utility model is provided with a hot riveting component, a positioning component and a detection component, and the components cooperate with each other, so as to detect whether the one-way valve diaphragm, the retaining ring and the cylinder cover are placed, and can prevent the missing of parts; the positioning component and the detection component are used to cooperate with each other to confirm the hot riveting starting point, so as to facilitate the control of the hot riveting depth, effectively avoid the hot riveting depth being too deep or too shallow, and improve the assembly efficiency and qualified rate of the cylinder cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of the hot riveting equipment in the preferred embodiment of the utility model;

[0019] Figure 2 for Figure 1 A partial enlarged structural diagram of the middle A part;

[0020] Figure 3 This is a schematic cross-sectional view of the hot riveting equipment after the frame is omitted in the preferred embodiment of the utility model;

[0021] Among them: frame -1, support plate -11, top plate -12, first connecting column -13, second connecting column -14, hot riveting assembly -2, first fixing block -21, first fixing block -22, first driver -23, first sensor -24, pressure head -25, positioning assembly -3, guide sleeve -31, guide column -32, positioning block -33, second driver -34, clamping cylinder -4, cylinder pressure plate -41, support frame -51, fixing rod -52, second sensor -53, third sensor -54, third driver -55, fourth sensor -56, first fixing plate -61, second fixing plate -62, bottom plate -63, pad -64, cylinder cover -7, pipeline -71, one-way valve diaphragm -72, retaining ring -73. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the technical solution of the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solution in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0023] Reference Figures 1 to 3 The hot riveting device for the cylinder cover of this embodiment is used to hot rivet the one-way valve diaphragm 72 and the retaining ring 73 assembled in the pipeline 71 of the cylinder cover 7 so that the two are connected and fixed. The hot riveting device includes a frame 1, a first fixing plate 61 connected to the bottom of the frame 1, a second fixing plate 62 connected to the top of the frame 1, a bottom plate 63 arranged between the top and the bottom of the frame 1, a hot riveting assembly 2, a positioning assembly 3, a pressing assembly and a detection assembly. The bottom plate 63 is parallel to the first fixing plate 61 and the second fixing plate 62, and the upper surface of the bottom plate 63 is parallel to the horizontal plane. The cylinder cover 7 is placed on the upper surface of the bottom plate 63. The clamping assembly is used to press the cylinder cover 7 onto the base plate 63, the positioning assembly 3 is used to install the cylinder cover 7 into place on the base plate 63 and locate the hot riveting position, the detection assembly is used to check whether the cylinder cover 7 is installed on the base plate 63 and whether the one-way valve diaphragm 72 and the retaining ring 73 are placed in the cylinder cover 7; the hot riveting assembly 2 is used to hot rivet the one-way valve diaphragm 72 and the retaining ring 73.

[0024] The frame 1 includes a support plate 11 and a top plate 12 which are arranged in parallel with each other. The top plate 12 and the support plate 11 are also parallel with the first fixing plate 61 and the second fixing plate 62. The top plate 12 is located above the support plate 11. The top plate 12 is a rectangular plate. First connecting columns 13 are arranged between the four top corners of the top plate 12 and the support plate 11 to fix the support plate 11 and the top plate 12. A plurality of second connecting columns 14 are also arranged on the top plate 12. The second connecting columns 14 penetrate the thickness direction of the top plate 12, and the bottom ends thereof are fixedly connected to the second fixing plate 62. The top plate 12 is slidably connected to the second connecting columns 14.

[0025] Furthermore, the hot riveting assembly 2 includes a first fixed block 21, a second fixed block 22, a first driver 23, a first sensor 24 and a pressure head 25, and the top of the first fixed block 21 is fixedly connected to the bottom surface of the second fixed plate 62. The first driver 23 in this embodiment is a telescopic cylinder, the cylinder body of the first driver 23 is fixedly connected to the first fixed block 21, one end of the telescopic rod of the first driver 23 is fixedly connected to one end of the second fixed block 22, one end of the first sensor 24 and one end of the pressure head 25 are fixedly connected to the other end of the telescopic rod of the first driver 23, and the first driver 23 is used to drive the first sensor 24 and the pressure head 25 to move up and down. The first sensor 24 and the pressure head 25 are both arranged toward the pipe 71 of the cylinder cover 7, and the length directions of the first sensor 24 and the pressure head 25 are parallel to the length direction of the pipe 71. The orthographic projection of the first sensor 24 on the plane where the top surface of the pipe 71 is located is located in the area enclosed by the outer wall and the inner wall of the pipe 71, the axis line of the pressure head 25 coincides with the axis line of the pipe 71, and the distance between the bottom surface of the first sensor 24 and the top surface of the pipe 71 is less than or equal to the distance between the bottom surface of the pressure head 25 and the top surface of the pipe 71, ensuring that when the first sensor 24 and the pressure head 25 move downward, the first sensor 24 will first touch the pipe 71 of the cylinder cover 7 and use the height position as the starting point of hot riveting. The first sensor 24 will transmit the signal to the pressure head 25, and the pressure head 25 will perform hot riveting according to the required hot riveting depth, thereby being able to control the hot riveting depth.

[0026] Furthermore, the positioning assembly 3 includes a plurality of guide sleeves 31 arranged on the first fixed plate 61, a plurality of guide posts 32 arranged on the second fixed plate 62, a plurality of positioning blocks 33 fixedly arranged on the bottom plate 63, and a second driver 34 for driving the second fixed plate 62 to move up and down. The guide sleeves 31 and the guide posts 32 are arranged one by one, the guide sleeves 31 and the guide posts 32 are located between the first fixed plate 61 and the second fixed plate 62, and the axis of the guide sleeve 31 coincides with the axis of the guide post 32. In this embodiment, four guide posts 32 and four guide sleeves 31 are arranged, respectively located at the four vertex corners of the first fixed plate 61 and the four vertex corners of the second fixed plate 62.

[0027] The second driver 34 in this embodiment is a telescopic cylinder, the cylinder body of the second driver 34 is fixedly connected to the top plate 12, and the telescopic rod of the second driver 34 is fixedly connected to the second fixing plate 62. When the second driver 34 drives the second fixing plate 62 to move downward close to the cylinder cover 7, the guide column 32 will continue to approach the guide sleeve 31 until the guide column 32 is inserted into the guide sleeve 31. The setting of the guide column 32 being inserted into the guide sleeve 31 can better locate the position of the pressure head 25 during hot riveting.

[0028] In addition, in this embodiment, two positioning blocks 33 are fixedly provided on one side of the base plate 63 away from the hot riveting component 2 and on the other two opposite sides, and one positioning block 33 is provided on the side close to the hot riveting component 2. All the positioning blocks 33 are used together to determine the placement position of the cylinder cover 7 on the base plate 63. When the cylinder cover 7 is placed in the fixed position determined by the oil positioning blocks 33 on the base plate 63, each positioning block 33 contacts and presses against the outer edge of the side of the cylinder cover 7 close to the base plate 63 to prevent the cylinder cover 7 on the base plate 63 from shifting.

[0029] Furthermore, the detection assembly includes a support frame 51, two fixed rods 52 fixedly connected to the top of the support frame 51 and arranged in parallel, a second sensor 53 fixedly connected to one end of one fixed rod 52 away from the support frame 51, a third sensor 54 fixedly connected to one end of the other fixed rod 52 away from the support frame 51, a fourth sensor 56 fixedly arranged on the side of the bottom plate 63 close to the second fixed plate 62, and a third driver 55 for driving the support frame 51 to move back and forth. The second sensor 53 is used to detect whether the one-way valve diaphragm 72 is installed in the pipe 71 of the cylinder cover 7, the third sensor 54 is used to detect whether the retaining ring 73 is installed in the pipe 71 of the cylinder cover 7, and the fourth sensor 56 is used to detect whether the cylinder cover 7 is installed on the bottom plate 63. Only after confirming that each part is installed correctly, will the next step be continued; otherwise, the equipment will alarm to prevent missing parts. In addition, the support frame 51 is located on the side of the bottom plate 63 close to the hot riveting assembly 2, which is convenient for the second sensor 53 and the third sensor 54 to detect the one-way valve diaphragm 72 and the retaining ring 73. The third driver 55 in this embodiment is a telescopic cylinder, the cylinder body of the third driver 55 is fixedly connected to the top surface of the first fixed plate 61, and one end of the telescopic rod of the third driver 55 is fixedly connected to the bottom of the support frame 51. In addition, pads 64 are fixedly arranged at both ends of the bottom surface of the bottom plate 63, the bottom surface of the pads 64 is fixedly connected to the top surface of the first fixed plate 61, and the pads 64 are used to separate the bottom plate 63 from the first fixed plate 61, so that the cylinder body of the third driver 55 is located between the bottom surface of the bottom plate 63 and the top surface of the first fixed plate 61, so as to avoid the cylinder body of the third driver 55 being exposed to the outside and causing interference.

[0030] The clamping assembly includes a plurality of clamping cylinders 4 fixedly connected to the first fixing plate 61. In this embodiment, a total of four clamping cylinders 4 are provided, and each clamping cylinder 4 includes a cylinder pressing plate 41. When the cylinder cover 7 is placed at a fixed position on the bottom plate 63, the clamping cylinder 4 will drive its cylinder pressing plate 41 to press against the surface of the cylinder cover 7, thereby ensuring that the cylinder cover 7 is pressed against the bottom plate 63 to prevent the cylinder cover 7 from falling off.

[0031] The working process of the hot riveting equipment in this embodiment is briefly described below:

[0032] First, put the one-way valve diaphragm 72 and retaining ring 73 of the product into the corresponding pipe 71 on the cylinder cover 7, and then place the cylinder cover 7 on the bottom plate 63, open the pressing cylinder 4, and make the cylinder pressure plate 41 press the four corners of the cylinder 4 cover to prevent shaking. Then start the third driver 55, so that the telescopic rod of the third driver 55 drives the support frame 51 to move towards the direction close to the bottom plate 63 until the second sensor 53 and the third sensor 54 are just aligned with the one-way valve diaphragm 72 and the retaining ring 73 respectively, so as to detect whether the one-way valve diaphragm 72 and the retaining ring 73 are installed correctly. After confirming that the one-way valve diaphragm 72 and the retaining ring 73 are installed correctly, the telescopic rod of the third driver 55 will move in the opposite direction to drive the support frame 51 away from the bottom plate 63, and then the telescopic rod of the second driver 34 will extend downward to drive the second fixed plate 62 to move downward to gradually approach the first fixed plate 61, until the guide column 32 is inserted into the guide sleeve 31 and fits tightly, and the second driver 34 stops moving.

[0033] Then the telescopic rod of the first driver 23 will extend downward to drive the second fixed block 22 and the first sensor 24 and the pressure head 25 to move downward to continuously approach the cylinder cover 7, until the first sensor 24 first touches the top of the pipe 71 of the cylinder cover 7, and locates this place as the starting point of hot riveting. The pressure head 25 will continue to press down according to the required hot riveting depth. During the pressing process of the pressure head 25, the protruding plastic column in the cylinder cover 7 will begin to melt due to the high temperature of the pressure head 25, so that the one-way valve diaphragm 72 is connected to the block ring. When the pressure head 25 reaches the welding depth, the telescopic rod of the first driver 23 will stop pressing down and keep for 5s to ensure that the one-way valve diaphragm 72 and the retaining ring 73 are firmly welded. Then the telescopic rod of the first driver 23 is retracted, and the telescopic rod of the second driver 34 is also retracted, and the entire hot riveting equipment stops moving to complete the hot riveting.

[0034] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with this technology to understand the content of the utility model and implement it accordingly. They cannot be used to limit the protection scope of the utility model. All equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A hot riveting device for a cylinder head, characterized in that: The invention comprises a frame, a first fixing plate connected to the bottom of the frame, a second fixing plate connected to the top of the frame, a bottom plate arranged between the top and the bottom of the frame, a hot riveting assembly, a positioning assembly, a pressing assembly and a detection assembly, wherein the bottom plate is used to place a cylinder cover, the pressing assembly is used to press the cylinder cover onto the bottom plate, the positioning assembly is used to install the cylinder cover into place on the bottom plate and locate the hot riveting position, the detection assembly is used to check whether the cylinder cover is installed on the bottom plate and whether a one-way valve diaphragm and a retaining ring are placed in the cylinder cover; the hot riveting assembly comprises a first fixing block, a first driver, a first sensor and a pressure head, the first fixing block is fixedly connected to the bottom surface of the second fixing plate, the first driver is fixedly connected to the first fixing block, the first sensor and the pressure head are both fixedly connected to one end of the first driver, and the hot riveting assembly is used to hot rivet the one-way valve diaphragm and the retaining ring.

2. The hot riveting equipment according to claim 1, characterized in that: The cylinder cover has a pipeline, the one-way valve diaphragm and the retaining ring are located in the pipeline, and the length directions of the first sensor and the pressure head are parallel to the length direction of the pipeline.

3. The hot riveting equipment according to claim 2, characterized in that: The orthographic projection of the first sensor on the plane where the top surface of the pipeline is located is located in the area enclosed by the outer wall and the inner wall of the pipeline, and the axis center line of the pressure head coincides with the axis center line of the pipeline.

4. The hot riveting equipment according to claim 1, characterized in that: The positioning assembly includes a plurality of guide sleeves arranged on the first fixing plate, a plurality of guide posts arranged on the second fixing plate, and a plurality of positioning blocks fixedly arranged on the bottom plate, and the guide sleeves are arranged in one-to-one correspondence with the guide posts.

5. The hot riveting equipment according to claim 4, characterized in that: The guide sleeve and the guide column are located between the first fixing plate and the second fixing plate, the axis center line of the guide sleeve coincides with the axis center line of the guide column, and the guide sleeve is used for inserting the guide column.

6. The hot riveting equipment according to claim 4, characterized in that: The bottom plate is parallel to the first fixing plate and the second fixing plate, and the plurality of positioning blocks are used together to determine the placement position of the cylinder cover on the bottom plate, and the positioning blocks are in contact with the outer edge of one side of the cylinder cover close to the bottom plate.

7. The hot riveting equipment according to claim 4, characterized in that: The positioning assembly also includes a second driver for driving the second fixing plate to move up and down, and the second driver is connected to the top of the frame.

8. The hot riveting equipment according to claim 2, characterized in that: The detection assembly includes a support frame, two fixed rods fixedly connected to the top of the support frame and arranged in parallel, a second sensor fixedly connected to one end of one of the fixed rods, a third sensor fixedly connected to one end of the other fixed rod, and a third driver for driving the support frame to move back and forth, the second sensor and the third sensor are both located at one end of the fixed rod away from the support frame, the second sensor is used to detect whether the one-way valve diaphragm is installed in the pipe of the cylinder cover, and the third sensor is used to detect whether the retaining ring is installed in the pipe of the cylinder cover.

9. The hot riveting equipment according to claim 8, characterized in that: The detection assembly further includes a fourth sensor fixedly arranged on a side of the base plate close to the second fixing plate, and the fourth sensor is used to detect whether the cylinder cover is installed on the base plate.

10. The hot riveting equipment according to claim 1, characterized in that: The clamping assembly includes a plurality of clamping cylinders fixedly connected to the first fixing plate, and the clamping cylinder includes a cylinder pressure plate. When the cylinder cover is placed in a fixed position on the base plate, the cylinder pressure plate of the clamping cylinder presses against the surface of the cylinder cover to press the cylinder cover onto the base plate.

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