CN118848387A - Automobile muffler end cover processing equipment - Google Patents

Abstract

The present invention relates to the technical field of automobile muffler processing, and specifically to an automobile muffler end cover processing equipment, including a casing, a placement tube arranged on the casing for placing a workpiece, a first rotating chuck arranged on the placement tube for clamping and positioning the workpiece, and an automatic welding unit arranged on the casing for welding the workpiece in the placement tube, and a protective mechanism arranged on the casing for protecting iron chips generated during the welding process of the welding unit, the protective mechanism including a protective plate and a scraper for scraping and collecting waste chips on the casing, and a driving mechanism for driving the protective plates to move closer and farther from each other, and the automobile muffler end cover processing equipment also includes a linkage collection mechanism for collecting splashing iron chips. This technical solution prevents high-temperature iron chips from splashing through the protective plate and the scraper for scraping and collecting waste chips on the casing, and on the other hand, there is no need to manually clean the welding area.

Description

Automobile muffler end cover processing equipment

Technical Field

The invention relates to the technical field of automobile muffler processing, in particular to an automobile muffler end cover processing device.

Background Art

In the automotive manufacturing industry, mufflers are important components for reducing noise pollution, and every link in their production process is crucial. However, during welding operations, the spattering of waste chips generated by the high-temperature welding process often poses certain challenges to production efficiency and product quality. The spattering of high-temperature waste chips not only threatens the personal safety of operators, but may also damage the equipment and even affect the welding quality. The spattering of waste chips into the equipment or working area may cause equipment failure, reduced accuracy and increased maintenance costs. At the same time, if the spattered waste chips adhere to the surface of the welded parts, they may also form defects, affecting the sealing and appearance quality of the end cover.

Chinese patent publication number CN102500972A discloses an automobile muffler welding machine, which realizes the synchronous rotation of the muffler and the exhaust pipes at both ends through the rotation of the corresponding mechanism, facilitates the welding connection between the muffler and the exhaust pipe, is simple to operate, has high welding efficiency and good welding quality, and avoids the disadvantages of manual welding.

However, in actual use, the above structure generates hot iron chips during the welding process of the automobile muffler. If the hot iron chips are not effectively protected, the hot iron chips may splash out of the welding work area, which may cause harm to the staff watching on the side. On the other hand, the hot iron chips will accumulate in the welding area. If they are not cleaned up in time, the waste chips will accumulate in the welding area and be difficult to clean.

Summary of the invention

In view of the above problems, an automobile muffler end cover processing equipment is provided, which solves the problems of high-temperature iron chips splashing during welding and cleaning the working area after welding through a protective plate and a scraper.

In order to solve the problems of the prior art, the present invention provides an automobile muffler end cover processing equipment, including a casing, a placing cylinder arranged on the casing for placing a workpiece, a first rotating chuck arranged on the placing cylinder for clamping and positioning the workpiece, and an automatic welding unit arranged on the casing for welding the workpiece in the placing cylinder, and a protective mechanism arranged on the casing for protecting iron chips generated during the welding process of the welding unit, the protective mechanism including a protective plate and a scraper for scraping and collecting waste chips on the casing, and a driving mechanism for driving the protective plates to move closer to and away from each other. The automobile muffler end cover processing equipment also includes a linkage collection mechanism for collecting splashing iron chips.

Preferably, the driving mechanism includes a first linear drive, a screw rod, a threaded block and a lifting plate; the first linear drive is arranged on the housing; the screw rod is rotatably arranged on the housing, and the input end of the screw rod is connected to the output end of the first linear drive through a coupling; the threaded block is threadedly arranged on the screw rod; and the lifting plate is arranged on the threaded block.

Preferably, the driving mechanism also includes a connecting rod and a linear limiting groove; the connecting rod is rotatably arranged on the lifting plate, and the connecting rod is rotatably connected to the lifting plate and the protective plate respectively; the linear limiting groove is opened on the casing and slidably cooperates with the protective plate.

Preferably, the linkage collection mechanism comprises a collection box and a sponge block; the collection box is arranged on the protective plate and has a pair, and the collection box is used to collect waste chips generated during the workpiece processing; the sponge block is arranged on the collection box.

Preferably, the linkage collection mechanism also includes a mounting plate, a positioning rod, a rotating striking block and a contact rod; the mounting plate is arranged on the casing and has a pair; the positioning rod is arranged between the pair of mounting plates; the rotating striking block is rotatably arranged on the positioning rod and is located on one side of the protective plate; the contact rod is arranged on the rotating striking block.

Preferably, the linkage collection mechanism also includes a water tank, a piston water pump and a spray pipe; the water tank is arranged on the casing and has a pair; the piston water pump is arranged on the casing and has a pair; the spray pipe is arranged at the water outlet end of the piston water pump, and the water outlet end of the spray pipe extends to the protective plate and is located above the collection box.

Preferably, the linkage collecting mechanism also includes a sliding block, a contact block and a connecting pipe; the sliding block is vertically slidably arranged on the piston water pump; the contact block is arranged on the sliding block and extends out of the outside of the piston water pump; the connecting pipe is arranged on the water tank, the water outlet end of the connecting pipe is arranged at the water inlet end of the piston water pump, and the connecting pipe is connected to the piston water pump.

Preferably, the linkage collection mechanism further comprises a drop chute and a collection box; the drop chute is provided on the casing and has a plurality of drop chute; the collection box is arranged on the casing and is located below the drop chute.

Preferably, the automatic welding unit includes a ring gear, a first rotary driver, a rotating rod and a main gear; the ring gear is rotatably arranged above the placement cylinder; the first rotary driver is installed on the casing and close to one side of the placement cylinder; the rotating rod is rotatably arranged at the output end of the first rotary driver through a coupling; the main gear is rotatably arranged on the rotating rod and fixed coaxially with the rotating rod, and the main gear is meshed with the ring gear.

Preferably, the automatic welding unit also includes a welding gun, a small aggregate box, a grinding block, a cleaning block and a sweeping block; the welding gun is arranged on the gear ring; the small aggregate box is arranged below the welding gun and above the gear ring; the grinding block is arranged on the small aggregate box and is located on the left side of the small aggregate box; the cleaning block is arranged on the small aggregate box and away from one side of the grinding block; the sweeping block has a pair and is rotatably arranged on the casing, and the sweeping block is engaged with the gear ring and is located above the gear ring.

Compared with the prior art, the present invention has the following beneficial effects:

1. The present invention prevents the high-temperature iron chips generated by the automatic welding unit from splashing out of the working area during welding by providing a protective plate and a scraper for scraping and collecting the waste chips on the casing. On the one hand, it prevents the high-temperature iron chips from splashing, and on the other hand, it does not need to manually clean the welding area.

2. The present invention arranges a first linear drive, a screw rod, a threaded block and a lifting plate, so that the screw rod can drive the threaded block threadedly connected thereto to slide downward in the vertical direction, and can drive the lifting plate fixed thereto to slide downward in a stable vertical direction along the guide rod with a clearance fit.

3. The present invention arranges a connecting rod and a linear limiting groove, so that a pair of protective plates arranged opposite to each other can be driven by the connecting rod to move relatively close to each other until the pair of protective plates block the two sides of the placement tube, thereby completing the automatic shielding of the welding work area, preventing strong light exposure on the one hand, and preventing the splashing of high-temperature waste chips on the other hand.

4. The present invention provides a collection box and a sponge block. The water in the collection box can timely cool down the high-temperature waste chips. On the one hand, it can complete the collection of high-temperature waste chips. On the other hand, it can also cool down the high-temperature waste chips, which in disguised form reduces the heat accumulation in the welding area and is beneficial to increasing the service life of the automatic welding unit.

5. The present invention provides a mounting plate, a positioning rod, a rotating knocking block and a contact rod. When the sponge block is squeezed, the saturated sponge block can be driven to squeeze out the water, so that the water in the collection box can be squeezed out in time, and the squeezed water can flow out through the collection box.

6. The present invention provides a water tank, a piston water pump and a spraying pipe, so that when the protective plate is relatively far away and the welding work is completed, the sponge block with a higher temperature can be automatically sprayed for cooling, thereby increasing the service life of the sponge block.

7. The present invention provides a sliding block, a contact block and a connecting pipe, so that when the protective plate contacts the contact block, the water in the water tank can be automatically discharged through the spray pipe.

8. The present invention provides a drop trough and a collection box so that the scraper can automatically clean the welding work area, thereby preventing the high-temperature iron chips from being attached to the welding area and being difficult to clean.

9. The present invention provides the ring gear, the first rotary driver, the rotating rod and the main gear, so that when the first rotary driver rotates, the main gear connected thereto can drive the meshing ring gear to rotate regularly.

10. The present invention provides a welding gun, a small aggregate box, a grinding block, a cleaning block and a sweeping block, so that after the welding gun welds the outer wall of the workpiece, the grinding block can promptly perform contact grinding on the welded area, making the welding point smoother and ensuring the quality and effect of welding.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a three-dimensional structural diagram of an automobile muffler end cover processing equipment from a first perspective.

FIG. 2 is a three-dimensional structural diagram of an automobile muffler end cover processing equipment from a second viewing angle.

FIG. 3 is a front view of a structure diagram of an automobile muffler end cover processing device.

FIG. 4 is a side cutaway perspective structural diagram of FIG. 3 of an automobile muffler end cover processing equipment.

FIG. 5 is a three-dimensional structural diagram of a protective plate and a connecting rod of an automobile muffler end cover processing device.

FIG. 6 is a transversely cut three-dimensional structural diagram of a vehicle muffler end cover processing device 5 .

FIG. 7 is a three-dimensional structural diagram of a linkage collection mechanism of an automobile muffler end cover processing equipment.

FIG8 is a three-dimensional structural diagram of a scraper and a water tank of an automobile muffler end cover processing equipment.

FIG. 9 is an enlarged structural diagram of point A in FIG. 2 of an automobile muffler end cover processing equipment.

FIG. 10 is a three-dimensional structural diagram of an automatic welding unit of an automobile muffler end cover processing equipment.

FIG. 11 is an enlarged structural diagram of point B in FIG. 7 of an automobile muffler end cover processing equipment.

The numbers in the figure are: 1, housing; 2, placement cylinder; 3, first rotary chuck; 4, automatic welding unit; 41, gear ring; 42, first rotary driver; 43, rotating rod; 44, main gear; 45, welding gun; 46, small aggregate box; 47, grinding block; 48, cleaning block; 49, cleaning block; 5, protection mechanism; 51, protection plate; 52, scraper; 6, driving mechanism; 61, first linear driver; 62, screw rod; 63, threaded block; 631, The second rotary chuck; 64, lifting plate; 65, connecting rod; 66, linear limiting groove; 7, linkage collecting mechanism; 71, collecting box; 72, sponge block; 73, mounting plate; 74, positioning rod; 75, rotating knocking block; 76, contact rod; 77, water tank; 78, piston water pump; 79, spraying pipe; 791, sliding block; 7911, first return spring; 792, contact block; 793, connecting pipe; 794, drop groove; 795, collecting box.

DETAILED DESCRIPTION

In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

Referring to FIGS. 1 to 8 , a processing device for an automobile muffler end cover comprises a housing 1, a placement tube 2 arranged on the housing 1 for placing a workpiece, a first rotary chuck 3 arranged on the placement tube 2 for clamping and positioning the workpiece, and an automatic welding unit 4 arranged on the housing 1 for welding the workpiece in the placement tube 2, and a protection mechanism 5 arranged on the housing 1 for protecting iron filings generated during the welding process of the welding unit, the protection mechanism 5 comprises a protection plate 51 and a scraper 52 for scraping and collecting waste filings on the housing 1, and a driving mechanism 6 for driving the protection plates 51 to move closer to and away from each other, the processing device for the automobile muffler end cover also comprises a linkage collection mechanism 7 for collecting flying iron filings, a second rotary chuck 631 for clamping the workpiece is arranged on the threaded block 63, and the first rotary chuck 3 and the second rotary chuck 631 are respectively driven by rotating motors.

First, place the workpiece to be processed in the placement tube 2, and then the rotating chuck can rotate and support the workpiece placed in the placement tube 2 to achieve the support and fixed limit of the workpiece, and at the same time place the workpiece on the second rotating chuck 631. When the workpiece to be processed is fixed by the first rotating chuck 3 and the second rotating chuck 631 respectively, the first linear drive 61 is started, and then the threaded block 63 is driven to descend in the vertical direction through the screw rod 62 until the two workpieces are close to each other and fit together, and then they can be rotationally welded through the automatic welding unit 4 to complete the automatic rotation welding of the workpiece. When the screw rod 62 drives the threaded block 63 to slide and descend in the vertical direction When the lifting plate 64 is in vertical downward movement, the protective plate 51 can be driven to move relatively close through the connecting rod 65, and in this process, the scraper 52 can be driven to slide horizontally in a synchronous manner. Since the scraper 52 is in contact with the top of the casing 1, the scraper 52 can scrape and collect the iron filings accumulated or remaining on the casing 1 until the protective plate 51 completes the shielding and protection of the placement tube 2, thereby preventing the high-temperature iron filings generated by the automatic welding unit 4 from splashing outside the working area during welding, thereby protecting the safety of the user.

As shown in Figures 2 to 4, the driving mechanism 6 includes a first linear driver 61, a screw rod 62, a threaded block 63 and a lifting plate 64; the first linear driver 61 is arranged on the housing 1; the screw rod 62 is rotatably arranged on the housing 1, and the input end of the screw rod 62 is connected to the output end of the first linear driver 61 through a coupling; the threaded block 63 is threadedly arranged on the screw rod 62; the lifting plate 64 is arranged on the threaded block 63, and a second rotating chuck 631 is arranged on the threaded block 63, and the second rotating chuck 631 is used to clamp and position the workpiece to achieve clamping and positioning of the workpiece to be processed, and a guide rod is arranged on the housing 1 to limit the vertical sliding of the lifting plate 64.

When welding protection is required for the workpiece placed in the placing tube 2, the first linear drive 61 is started first, and then the output end of the first linear drive 61 can drive the screw rod 62 to rotate through the coupling. During this process, the screw rod 62 can drive the threaded block 63 threadedly connected thereto to slide downward in the vertical direction, and can drive the lifting plate 64 fixed thereto to slide downward in a stable vertical direction along the guide rod with a clearance fit.

As shown in Figures 2 and 3, the driving mechanism 6 also includes a connecting rod 65 and a linear limiting groove 66; the connecting rod 65 is rotatably set on the lifting plate 64, and the connecting rod 65 is rotatably connected to the lifting plate 64 and the protective plate 51 respectively; the linear limiting groove 66 is opened on the casing 1 and slidably cooperates with the protective plate 51.

When the lifting plate 64 descends and slides along the guide rod in the vertical direction, the lifting plate 64 can drive the connecting rod 65 rotatably connected thereto to rotate and pull the protective plate 51, and the protective plate 51 can slide in the horizontal straight direction along the linear limiting groove 66 provided on the casing 1 while being pulled by the connecting rod 65, so that during the descending process of the lifting plate 64, a pair of protective plates 51 arranged opposite to each other can be driven by the connecting rod 65 to move relatively close, until a pair of protective plates 51 block the two sides of the placement tube 2, thereby completing the automatic shielding of the welding work area, preventing strong light exposure on the one hand, and preventing the splashing of high-temperature waste chips on the other hand.

5 and 6 , the linkage collection mechanism 7 includes a collection box 71 and a sponge block 72 ; the collection box 71 is disposed on the protective plate 51 and has a pair of collection boxes 71 for collecting waste chips generated during workpiece processing; the sponge block 72 is disposed on the collection box 71 .

When the protective plate 51 is driven by the connecting rod 65 and moves relatively close, the collecting box 71 set on the protective plate 51 can be driven to move synchronously in this process until the collecting box 71 is located above the placing tube 2. At this time, the waste chips generated by the automatic welding unit 4 when welding the workpiece can fly into the collecting box 71, and the sponge block 72 in the collecting box 71 can be soaked with cooling water in advance, and water is introduced into the collecting box 71. This makes it possible for the water in the collecting box 71 to cool down the high-temperature waste chips in time when the high-temperature splashing waste chips fall into the collecting box 71. On the one hand, the high-temperature waste chips can be collected, and on the other hand, the high-temperature waste chips can be cooled, which in disguise reduces the heat accumulation in the welding area, which is beneficial to improving the service life of the automatic welding unit 4.

As shown in Figures 5-7, the linkage collection mechanism 7 also includes a mounting plate 73, a positioning rod 74, a rotating striking block 75 and a contact rod 76; the mounting plate 73 is arranged on the casing 1 and has a pair; the positioning rod 74 is arranged between the pair of mounting plates 73; the rotating striking block 75 is rotatably arranged on the positioning rod 74 and is located on one side of the protective plate 51; the contact rod 76 is arranged on the rotating striking block 75.

When the automatic welding unit 4 completes the welding work, the lifting plate 64 rises in the vertical direction through the threaded block 63. During this process, the protective plate 51 can move relatively away. During this process, the protective plate 51 can be driven to contact the rotating knocking block 75. When in contact, the rotating knocking block 75 can be driven to rotate at an inclined angle along the positioning rod 74 until the rotating knocking block 75 squeezes the sponge block 72 in the collection box 71. When the sponge block 72 is squeezed, the saturated sponge block 72 can be driven to squeeze out the water, so that the water in the collection box 71 can be squeezed out in time, and the squeezed water can flow out through the collection box 71.

As shown in Figures 7 and 8, the linkage collection mechanism 7 also includes a water tank 77, a piston water pump 78 and a spray pipe 79; the water tank 77 is arranged on the casing 1 and has a pair; the piston water pump 78 is arranged on the casing 1 and has a pair; the spray pipe 79 is arranged at the water outlet end of the piston water pump 78, and the water outlet end of the spray pipe 79 extends to the protective plate 51 and is located above the collection box 71.

When the protective plate 51 contacts the rotating striking block 75 and rotates the striking block 75, the water in the piston water pump 78 can be sprayed on the sponge block 72 in the collecting box 71 through the spray pipe 79 during this process, so that when the protective plate 51 is relatively far away and the welding work is completed, the sponge block 72 with a higher temperature can be automatically sprayed for cooling, thereby increasing the service life of the sponge block 72.

As shown in Figures 7 to 9, the linkage collecting mechanism 7 also includes a sliding block 791, a contact block 792 and a connecting pipe 793; the sliding block 791 is vertically slidably arranged on the piston water pump 78; the contact block 792 is arranged on the sliding block 791 and extends out of the outside of the piston water pump 78; the connecting pipe 793 is arranged on the water tank 77, the water outlet end of the connecting pipe 793 is arranged at the water inlet end of the piston water pump 78, and the connecting pipe 793 is connected to the piston water pump 78, and the piston water pump 78 is provided with a first return spring 7911 for driving the sliding block 791 to slide vertically.

When the protective plate 51 moves relatively away from each other, the protective plate 51 can be driven to contact the contact block 792, and the contact block 792 and the sliding block 791 can slide in the piston water pump 78. In the initial state, there is no water flow in the piston water pump 78. Under the action of the first return spring 7911, the sliding piece can slide in the right vertical direction in the piston water pump 78, and drive the contact block 792 to slide synchronously. In this process, the one-way valve in the connecting pipe 793 is opened, thereby driving the water in the water tank 77 through the connecting pipe 793 is replenished into the piston water pump 78, and when the protective plate 51 returns to the initial position, the protective plate 51 can be driven to squeeze the rotating knocking block 75, and the contact rod 76 provided on the rotating knocking block 75 is caused to contact the contact block 792. During the contact process, the contact block 792 can be driven to drive the sliding block 791 to move vertically downward in the piston water pump 78, and in this process, the water in the piston water pump 78 can be sprayed out through the spray pipe, and the sprayed water can cool the sponge block 72, thereby improving the utilization rate of the sponge block 72.

As shown in FIG. 6 , the linkage collection mechanism 7 further includes a drop groove 794 and a collection box 795 ; the drop groove 794 is opened on the housing 1 and has a plurality of; the collection box 795 is arranged on the housing 1 and is located below the drop groove 794 .

When the protective plate 51 moves relatively close under the action of the connecting rod 65 and the linear limiting groove 66, it can drive the scraper 52 set on the protective box to scrape the welding work area around the casing 1 near the placement tube 2, and the scraped waste can pass through the drop groove 794 provided on the casing 1 and fall into the collection box 795, so that when the protective plate 51 moves relatively close and away, the scraper 52 can be driven to automatically clean the welding work area to prevent the splashing high-temperature iron chips from adhering to the welding area and being difficult to clean.

2-9, the automatic welding unit 4 includes a ring gear 41, a first rotary driver 42, a rotating rod 43 and a main gear 44; the ring gear 41 is rotatably arranged above the placement cylinder 2; the first rotary driver 42 is mounted on the housing 1 and close to one side of the placement cylinder 2; the rotating rod 43 is rotatably arranged at the output end of the first rotary driver 42 through a coupling; the main gear 44 is rotatably arranged on the rotating rod 43 and coaxially fixed with the rotating rod 43, the main gear 44 is meshed with the ring gear 41, and a plurality of rubber anti-slip blocks are arranged on the ring gear 41, and the rubber anti-slip blocks are used to increase the friction with the clamped workpiece, thereby preventing the workpiece from being offset during welding.

When it is necessary to weld the workpiece placed in the placement tube 2, the first rotary driver 42 is started first, and then the first rotary driver 42 can drive the rotating rod 43 to perform synchronous rotational movement. When the rotating rod 43 rotates, it can drive the main gear 44 coaxially fixed thereto to rotate. When the main gear 44 rotates, it can rotate the meshing ring gear 41, so that when the first rotary driver 42 rotates, it can drive the main gear 44 connected thereto to rotate the meshing ring gear 41 regularly.

As shown in Figures 10 and 11, the automatic welding unit 4 also includes a welding gun 45, a small aggregate box 46, a grinding block 47, a cleaning block 48 and a sweeping block 49; the welding gun 45 is arranged on the ring gear 41; the small aggregate box 46 is arranged below the welding gun 45 and is located above the ring gear 41; the grinding block 47 is arranged on the small aggregate box 46 and is located on the left side of the small aggregate box 46; the cleaning block 48 is arranged on the small aggregate box 46 and is away from the side of the grinding block 47; the sweeping block 49 has a pair and is rotatably arranged on the casing 1, and the sweeping block 49 is engaged with the ring gear 41 and is located above the ring gear 41.

When the gear ring 41 rotates, it can drive the welding gun 45 installed on the gear ring 41 to perform synchronous rotational movement, and in this process, the welding gun 45 is started to achieve the rotational movement of the welding gun 45, and the workpiece placed in the placement tube 2 can be regularly rotationally welded. When the welding gun 45 rotates, irregularly splashed waste high-temperature chips will be generated during the welding process of the welding gun 45. In order to prevent the high-temperature waste chips from staying on the gear ring 41, the small collection box 46 can collect the lower position of the welding gun 45, and during the rotation of the gear ring 41, it can drive the cleaning block 49 engaged with it to rotate, and when the cleaning block 49 rotates, the waste chips attached to the gear ring 41 can be automatically cleaned. And because the cleaning block 48 is located on the right side of the welding gun 45, the cleaning block 48 can be fitted with the outer wall of the workpiece before the welding gun 45 is welding, and the outer wall of the workpiece can be wiped and cleaned in contact with it before the welding gun 45 is welding, so as to avoid the welding quality being affected by the attachment of impurities and the like to the outer wall of the workpiece during welding by the welding gun 45, and in the process of rotating welding of the welding gun 45, the grinding block 47 located on the left side of the welding gun 45 can perform contact friction on the area after welding, so that after the welding gun 45 welds the outer wall of the workpiece, the grinding block 47 can timely perform contact grinding on the area after welding, so that the welding spot is smoother, thereby ensuring the quality and effect of welding.

The above embodiments only express one or several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims (10)

1. A muffler end cover processing device for automobiles, comprising a housing (1), a placement tube (2) arranged on the housing (1) for placing a workpiece, a first rotary chuck (3) arranged on the placement tube (2) for clamping and positioning the workpiece, and an automatic welding unit (4) arranged on the housing (1) for welding the workpiece in the placement tube (2), and a protection mechanism (5) arranged on the housing (1) for protecting iron chips generated during welding by the welding unit; characterized in that the protection mechanism (5) comprises a protection plate (51) and a scraper (52) for scraping and collecting waste chips on the housing (1), and a driving mechanism (6) for driving the protection plates (51) to move closer to and away from each other, and the muffler end cover processing device for automobiles also comprises a linkage collection mechanism (7) for collecting splashing iron chips. 2. An automobile muffler end cover processing equipment according to claim 1 is characterized in that the driving mechanism (6) includes a first linear drive (61), a screw rod (62), a threaded block (63) and a lifting plate (64); the first linear drive (61) is arranged on the housing (1); the screw rod (62) is rotatably arranged on the housing (1), and the input end of the screw rod (62) is connected to the output end of the first linear drive (61) through a coupling; the threaded block (63) is threadedly arranged on the screw rod (62); and the lifting plate (64) is arranged on the threaded block (63). 3. According to claim 1, a car muffler end cover processing equipment is characterized in that the driving mechanism (6) also includes a connecting rod (65) and a linear limiting groove (66); the connecting rod (65) is rotatably set on the lifting plate (64), and the connecting rod (65) is rotatably connected to the lifting plate (64) and the protective plate (51) respectively; the linear limiting groove (66) is opened on the casing (1) and slidably cooperates with the protective plate (51). 4. An automobile muffler end cover processing equipment according to claim 1 is characterized in that the linkage collection mechanism (7) includes a collection box (71) and a sponge block (72); the collection box (71) is arranged on the protective plate (51) and has a pair, and the collection box (71) is used to collect waste chips generated during the workpiece processing; the sponge block (72) is arranged on the collection box (71). 5. A car muffler end cover processing equipment according to claim 4, characterized in that the linkage collection mechanism (7) also includes a mounting plate (73), a positioning rod (74), a rotating striking block (75) and a contact rod (76); the mounting plate (73) is arranged on the housing (1) and has a pair; the positioning rod (74) is arranged between a pair of mounting plates (73); the rotating striking block (75) is rotatably arranged on the positioning rod (74) and is located on one side of the protective plate (51); the contact rod (76) is arranged on the rotating striking block (75). 6. An automobile muffler end cover processing equipment according to claim 4 is characterized in that the linkage collection mechanism (7) also includes a water tank (77), a piston water pump (78) and a spray pipe (79); the water tank (77) is arranged on the casing (1) and has a pair; the piston water pump (78) is arranged on the casing (1) and has a pair; the spray pipe (79) is arranged at the water outlet end of the piston water pump (78), and the water outlet end of the spray pipe (79) extends to the protective plate (51) and is located above the collection box (71). 7. An automobile muffler end cover processing equipment according to claim 4 is characterized in that the linkage collection mechanism (7) also includes a sliding block (791), a contact block (792) and a connecting pipe (793); the sliding block (791) is vertically slidably arranged on the piston water pump (78); the contact block (792) is arranged on the sliding block (791) and extends out of the outside of the piston water pump (78); the connecting pipe (793) is arranged on the water tank (77), the water outlet end of the connecting pipe (793) is arranged at the water inlet end of the piston water pump (78), and the connecting pipe (793) is connected to the piston water pump (78). 8. An automobile muffler end cover processing equipment according to claim 4 is characterized in that the linkage collection mechanism (7) also includes a drop groove (794) and a collection box (795); the drop groove (794) is opened on the casing (1) and has a plurality of; the collection box (795) is arranged on the casing (1) and is located below the drop groove (794). 9. An automobile muffler end cover processing equipment according to claim 1 is characterized in that the automatic welding unit (4) includes a ring gear (41), a first rotary driver (42), a rotating rod (43) and a main gear (44); the ring gear (41) is rotatably arranged above the placement cylinder (2); the first rotary driver (42) is installed on the housing (1) and close to one side of the placement cylinder (2); the rotating rod (43) is rotatably arranged at the output end of the first rotary driver (42) through a coupling; the main gear (44) is rotatably arranged on the rotating rod (43) and is coaxially fixed with the rotating rod (43), and the main gear (44) is meshed with the ring gear (41). 10. A car muffler end cover processing equipment according to claim 9, characterized in that the automatic welding unit (4) also includes a welding gun (45), a small aggregate box (46), a grinding block (47), a cleaning block (48) and a sweeping block (49); the welding gun (45) is arranged on the ring gear (41); the small aggregate box (46) is arranged below the welding gun (45) and is located above the ring gear (41); the grinding block (47) is arranged on the small aggregate box (46) and is located on the left side of the small aggregate box (46); the cleaning block (48) is arranged on the small aggregate box (46) and is away from the side of the grinding block (47); the sweeping block (49) has a pair and is rotatably arranged on the housing (1), and the sweeping block (49) is engaged with the ring gear (41) and is located above the ring gear (41).