CN209886033U - Paint spraying device for storage battery shell - Google Patents

Abstract

The utility model discloses a paint spraying device for a storage battery shell, which comprises a storage battery shell, a positioning mechanism and a paint spraying mechanism, wherein the side wall of the storage battery shell is provided with a mounting hole, the positioning mechanism is used for clamping the storage battery shell, the paint spraying mechanism is used for spraying paint on the storage battery shell, the positioning mechanism comprises a rotary seat, the upper end surface of the rotary seat is provided with an adjusting screw rod, one end of the adjusting screw rod is provided with a detachable adjusting handle, the adjusting screw rod is provided with a front thread and a rear thread with opposite rotating directions at intervals, the front thread and the rear thread are in threaded connection with an adjusting nut, the adjusting nut is provided with a mounting sleeve, the length direction of the mounting sleeve is vertical to that of the adjusting screw rod, a positioning gun with a cavity is arranged in the mounting sleeve, and through the arrangement, the positioning device with better positioning effect is provided, the paint spraying device is convenient for paint spraying on the outer surface of the storage battery shell.

Description

Paint spraying device for storage battery shell

Technical Field

The utility model relates to a technical field of battery shell, in particular to a paint spraying apparatus for battery shell.

Background

The paint spraying machine is a spraying machine, and is a coating device which disperses paint into mist to be sprayed on the surface of an object to be coated by the same using principle, and the paint spraying machine is commonly known as the spraying machine by people.

The storage battery shell of the current electric vehicle has the following defects in the paint spraying process: 1. the storage battery shell is placed on a common positioning mechanism for painting, so that part of the storage battery shell is shielded by the positioning mechanism and cannot be painted, and the storage battery shell is required to be clamped; 2. the current positioning mechanism has poor positioning effect, leads to different paint spraying depths of the storage battery shell and leads to poor paint spraying effect.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a paint spraying apparatus for battery shell has the positioner of location effect preferred, and the paint spraying apparatus of being convenient for sprays paint to the surface of battery shell.

The above technical purpose of the present invention can be achieved by the following technical solutions: a paint spraying device for a storage battery shell comprises the storage battery shell, a positioning mechanism and a paint spraying mechanism, wherein mounting holes are formed in the side wall of the storage battery shell, the positioning mechanism is used for clamping the storage battery shell, the paint spraying mechanism is used for spraying paint on the storage battery shell, the positioning mechanism comprises a rotary seat, an adjusting screw rod is arranged on the upper end face of the rotary seat, a detachable adjusting handle is arranged at one end of the adjusting screw rod, front threads and rear threads which are opposite in rotating direction are arranged on the adjusting screw rod at intervals, adjusting nuts are in threaded connection with the front threads and the rear threads, mounting sleeves are arranged on the adjusting nuts, the length direction of the mounting sleeves is perpendicular to the length direction of the adjusting screw rods, and positioning guns with cavities are arranged in the mounting sleeves;

the rotary seat is provided with an auxiliary mechanism which is convenient for adjusting the position of the positioning gun, the auxiliary mechanism comprises a polished rod which is arranged at an interval with the adjusting screw rod, auxiliary supporting seats are arranged at two ends of the polished rod, a guide sleeve is arranged on the polished rod, an auxiliary sleeve which is consistent with the length direction of the installation sleeve is arranged on the guide sleeve, the positioning gun is respectively arranged in the installation sleeve and the auxiliary sleeve, and the adjusting handle is rotated so that the adjusting screw rod rotates to drive the two positioning guns to be relatively close to or far away from each other; an air pump for providing an air source for the positioning gun and an electromagnetic valve for controlling the air source are respectively arranged between the adjusting screw rod and the polished rod;

the positioning gun comprises a cylinder body with two through ends, the two ends of the cylinder body are in threaded connection with cylinder covers, a convex column matched with a cavity is extended in the cylinder covers, flanges are symmetrically arranged in the cylinder body, a piston is arranged between the convex column and the flanges, a piston rod integrated with the piston is arranged on the piston, the piston rod extends out of the cylinder covers, a limiting sleeve is detachably mounted on the piston rod extending out of the cylinder covers, a limiting ring is arranged on the limiting sleeve, a chamfer is arranged at one end, opposite to the limiting ring, of the limiting sleeve, supporting mechanisms are symmetrically arranged in the length direction of the positioning gun, each supporting mechanism comprises a supporting cylinder mounted on a rotary seat, a cross plate is mounted on the piston rod of each supporting cylinder, each cross plate comprises a supporting portion used for supporting a storage battery shell and a clamping portion used for clamping the storage battery shell, and a guide groove is formed in the clamping portion along, a guide block capable of sliding along the guide groove is arranged in the guide groove, the outer end of the clamping part protrudes upwards to form a fixing part, and a spring is arranged between the fixing part and the guide block in a propping manner;

the paint spraying mechanism comprises a first paint spraying machine used for spraying paint on the side wall of the storage battery shell, a second paint spraying machine arranged relative to the first paint spraying machine and a third paint spraying machine used for spraying paint on the upper portion of the storage battery shell.

Furthermore, the ring channel has all been seted up at the both ends of cylinder cap, and the ring channel runs through in the open end of location rifle, the periphery of projection is equipped with the sealing washer that the cross-section is "<" font, the cylinder cap spiral is twisted into the cylinder body to make the sealing washer tightly support between cylinder body end and cylinder cap.

Further, be equipped with the collar on the lateral wall of piston, install the sealing ring in the collar, set up the seal groove that the cross-section is L shape in the projection, install the U-shaped seal cover in the seal groove, the both ends of U-shaped seal cover are supported respectively and are located the both ends of projection.

Furthermore, cushion pads are attached to two ends of the piston.

Furthermore, an accommodating box for accommodating the air pipe is arranged between the two positioning guns, and the accommodating box is fixed on the rotary seat through a fastening piece.

Further, first paint spraying machine and second paint spraying machine all include first seat and the spray gun of spraying paint, install the first feeding device who is used for driving spray gun seesaw, the second feeding device who is used for driving spray gun up-and-down motion and the third that is used for driving spray gun side-to-side motion on the first seat of spraying paint respectively and give the device.

Furthermore, the first feeding device comprises a first motor, a first screw rod, a first supporting seat, a first slide rail, a first slide block and a first sliding plate, one end of the first screw rod is connected with a motor shaft of the first motor, the other end of the first screw rod is arranged on the first supporting seat, the first slide rail is symmetrically arranged at two ends of the first screw rod, the first slide rail is arranged on the first slide block, the first sliding plate is connected with the first slide block and is in threaded connection with the first screw rod, the second feeding device comprises second mounting plates symmetrically arranged at two ends of the first slide rail, a second auxiliary rod is arranged on the second mounting plate at one end, a second screw rod is arranged on the second mounting plate at the other end, a second motor for driving the second screw rod to rotate is connected on the second screw rod, a cross rod is connected on the second screw rod, and the other end of the cross rod is guided and arranged on the second auxiliary rod, and the cross rod is provided with a third screw, a third motor for driving the third screw, a third nut connected to the third screw and a paint spray gun arranged on the third nut.

Further, the third paint spraying machine comprises a third paint spraying plate, a fourth motor which is installed on a fourth screw rod of the third paint spraying plate and used for driving the fourth screw rod is arranged, a fourth connecting plate is connected onto the fourth screw rod, fourth slide rails are symmetrically arranged at two ends of the fourth screw rod, a fourth slider is arranged on the fourth slide rails, the fourth connecting plate is installed on the fourth slider, a jacking rotary cylinder is installed on the fourth connecting plate, and a fourth feeding device used for driving a paint spraying gun to move left and right is installed on the jacking rotary cylinder.

Furthermore, the peripheral walls of the two ends of the positioning gun are connected with positioning plates in a threaded mode, and the positioning plates are screwed into the attaching installation sleeve in a threaded mode so that the positioning gun can be positioned in the length direction.

To sum up, the utility model discloses following beneficial effect has:

a piston rod in a positioning gun extends into a mounting hole of a storage battery shell, a limiting ring is attached to the inner wall of the storage battery shell, and then the storage battery shell is positioned; the adjusting screw rod is provided with front threads and rear threads which are opposite in rotation direction at intervals, and the storage battery shells with different mounting hole intervals can be met by rotating the adjusting nut; the storage battery shell is convenient to position by a positioning gun through the arrangement of the supporting mechanism, the periphery of the convex column is provided with a sealing ring with a cross section in a shape like a Chinese character <' >, and the cylinder cover is screwed in the cylinder cover through a screw, so that the sealing effect of the cylinder cover and the cylinder body is better; a U-shaped sealing sleeve is arranged in the sealing groove so that the sealing effect between the piston rod and the cylinder cover is better.

Drawings

Fig. 1 is a schematic structural view of the overall structure of the present invention;

fig. 2 is an assembly schematic view of the swivel base of the present invention;

FIG. 3 is an enlarged view of the utility model at A;

fig. 4 is a top view of the rotary base of the present invention;

FIG. 5 is a schematic view of a first paint sprayer of the present invention;

FIG. 6 is a schematic view of a third paint sprayer of the invention;

FIG. 7 is a front view of a third paint sprayer of the present invention;

fig. 8 is a schematic structural view of the support mechanism of the present invention;

fig. 9 is an exploded view of the positioning gun of the present invention;

fig. 10 is a cross-sectional view of the positioning gun of the present invention;

fig. 11 is an enlarged view of the utility model at the position B;

fig. 12 is a schematic structural view of the cylinder head of the present invention.

In the figure: 1. a battery case; 11. mounting holes; 2. a rotating base; 21. adjusting the screw rod; 211. adjusting the handle; 212. front threads; 213. back threading; 214. adjusting the nut; 215. installing a sleeve; 22. a polish rod; 221. an auxiliary support seat; 222. a guide sleeve; 223. an auxiliary sleeve; 23. an air pump; 231. an electromagnetic valve; 24. an accommodating box; 3. positioning the gun; 31. a cylinder body; 311. a flange; 32. a cylinder cover; 321. a convex column; 322. an annular groove; 323. a seal ring; 324. a sealing groove; 325. a U-shaped sealing sleeve; 33. a piston; 331. a mounting ring; 332. a seal ring; 333. a cushion pad; 34. a piston rod; 35. a limiting sleeve; 351. a limiting ring; 352. an infrared generator; 36. positioning a plate; 4. a support mechanism; 41. a support cylinder; 42. a cross plate; 421. a support portion; 422. a clamping portion; 423. a guide groove; 424. a guide block; 425. a fixed part; 426. a spring; 5. a first paint sprayer; 51. a first paint spraying base; 52. a first feeding device;

521. a first motor; 522. a first screw; 523. a first support base; 524. a first slide rail; 525. a first slider; 526. a first slide plate; 53. a second feeding device; 531. a second mounting plate; 532. a second auxiliary lever; 533. a second screw; 534. a second motor; 535. a cross bar; 54. a third feeding device; 541. a third screw; 542. a third motor; 543. a third nut; 6. a second paint sprayer; 7. a third paint spraying machine; 71. a third paint spray plate; 72. a fourth screw; 73. a fourth motor; 74. a fourth connecting plate; 75. a fourth slide rail; 76. a fourth slider; 77. jacking a rotary cylinder; 78. a fourth feeding device; 8. a paint spray gun.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

As shown in fig. 1-12, a paint spraying apparatus for a battery case comprises a battery case 1, a positioning mechanism and a paint spraying mechanism, the side wall of the storage battery shell 1 is provided with a mounting hole 11, the positioning mechanism is used for clamping the storage battery shell 1, the paint spraying mechanism is used for spraying paint on the storage battery shell 1, the positioning mechanism comprises a rotating seat 2, an adjusting screw 21 is arranged on the upper end surface of the rotating seat 2, a detachable adjusting handle 211 is arranged at one end of the adjusting screw 21, the adjusting screw 21 is provided with a front thread 212 and a rear thread 213 at intervals and with opposite rotating directions, the front screw thread 212 and the rear screw thread 213 are both in threaded connection with an adjusting nut 214, the adjusting nut 214 is provided with a mounting sleeve 215, the length direction of the mounting sleeve 215 is vertical to that of the adjusting screw 21, and a positioning gun 3 with a cavity is arranged in the mounting sleeve 215;

the rotary base 2 is provided with an auxiliary mechanism which is convenient for adjusting the position of the positioning gun 3, the auxiliary mechanism comprises a polished rod 22 which is arranged at an interval with the adjusting screw 21, two ends of the polished rod 22 are provided with auxiliary supporting bases 221, the polished rod 22 is provided with a guide sleeve 222, the guide sleeve 222 is provided with an auxiliary sleeve 223 which is consistent with the length direction of the mounting sleeve 215, the positioning guns 3 are respectively arranged in the mounting sleeve 215 and the auxiliary sleeve 223, and the adjusting handle 211 is rotated so that the adjusting screw 21 rotates to drive the two positioning guns 3 to be relatively close to or far away; an air pump 23 for providing an air source for the positioning gun 3 and an electromagnetic valve 231 for controlling the air source are respectively arranged between the adjusting screw rod 21 and the polished rod 22;

the positioning gun 3 comprises a cylinder body 31 with two through ends, cylinder covers 32 are in threaded connection with the two ends of the cylinder body 31, a convex column 321 matched with a cavity is extended in the cylinder cover 32, flanges 311 are symmetrically arranged in the cylinder body 31, a piston 33 is arranged between the convex column 321 and the flanges 311, a piston rod 34 connected with the piston 33 into a whole is arranged on the piston 33, the piston rod 34 extends out of the cylinder cover 32, a limiting sleeve 35 is detachably mounted on the piston rod 34 extending out of the cylinder cover 32, a limiting ring 351 is arranged on the limiting sleeve 35, an infrared generator 352 is embedded in one end of the limiting sleeve 35 relative to the limiting ring 351, supporting mechanisms 4 are symmetrically arranged in the length direction of the positioning gun 3, each supporting mechanism 4 comprises a supporting cylinder 41 mounted on a rotary seat 2, a cross plate 42 is mounted on the piston rod 34 of the supporting cylinder 41, each cross plate 42 comprises a supporting part 421 used for supporting the storage battery shell 1 and a clamping part 422 used for clamping the storage shell 1, a guide groove 423 is formed in the clamping part 422 along the length direction of the positioning gun 3, a guide block 424 capable of sliding along the guide groove 423 is arranged in the guide groove 423, the outer end of the clamping part 422 protrudes upwards to form a fixing part 425, and a spring 426 is arranged between the fixing part 425 and the guide block 424 in a propping manner;

the paint spraying mechanism includes a first paint sprayer 5 for spraying paint on the side wall of the battery case 1, a second paint sprayer 6 provided for the first paint sprayer 5, and a third paint sprayer 7 for spraying paint on the upper portion of the battery case 1.

Annular grooves 322 are formed in two ends of the cylinder cover 32, the annular grooves 322 penetrate through the opening end of the positioning gun 3, a sealing ring 323 with a cross section shaped like a Chinese character < "> is arranged on the periphery of the protruding column 321, the cylinder cover 32 is screwed into the cylinder body 31 in a spiral mode, so that the sealing ring 323 tightly abuts between the end portion of the cylinder body 31 and the cylinder cover 32, and the sealing effect of the cylinder cover 32 and the cylinder body 31 is good.

Be equipped with collar 331 on the lateral wall of piston 33, install sealing ring 332 in the collar 331, set up the cross-section for the seal groove 324 of L shape in the projection 321, install U-shaped seal cover 325 in the seal groove 324, the both ends of U-shaped seal cover 325 support respectively and locate the both ends of projection 321 so that the sealed effect between piston rod 34 and the cylinder cap 32 is better.

The two ends of the piston 33 are respectively provided with a buffer cushion 333 in a fitting manner, so that the piston 33 is prevented from being violently collided with the convex column 321 or the flange 311 to generate vibration, and the clamping effect is prevented from being influenced.

Be equipped with between two location rifle 3 and be used for holding tracheal holding box 24, just on holding box 24 is fixed in roating seat 2 through the fastener, avoid the trachea to take place the disorder because of roating seat 2 is rotatory or adjust the distance of installation cover 215 through setting up holding box 24.

The first paint spraying machine 5 and the second paint spraying machine 6 both comprise a first paint spraying base 51 and a paint spraying gun 8, a first feeding device 52 for driving the paint spraying gun 8 to move back and forth, a second feeding device 53 for driving the paint spraying gun 8 to move up and down and a third feeding device 54 for driving the paint spraying gun 8 to move left and right are respectively installed on the first paint spraying base 51, the first feeding device 52 comprises a first motor 521, a first screw 522, a first supporting base 523, first sliding rails 524, a first sliding block 525 and a first sliding plate 526, one end of the first screw 522 is connected to a motor shaft of the first motor 521, the other end of the first screw 522 is installed on the first supporting base 523, the first sliding rails 524 are symmetrically arranged at two ends of the first screw 522, the first sliding rails 524 are installed on the first sliding block 525, the first sliding plate 526 is connected to the first sliding block 525 and is in threaded connection with the first screw 522, the second feeding device 53 includes a second mounting plate 531 symmetrically disposed at two ends of the first slide rail 524, a second auxiliary rod 532 is disposed on the second mounting plate 531 at one end, a second screw rod 533 is disposed on the second mounting plate 531 at the other end, a second motor 534 for driving the second screw rod 533 to rotate is connected to the second screw rod 533, a cross rod 535 is connected to the second screw rod 533, the other end of the cross rod 535 is guided and disposed on the second auxiliary rod 532, a third screw rod 541, a third motor 542 for driving the third screw rod 541, a third nut 543 connected to the third screw rod 541, and a paint spray gun 8 disposed on the third nut 543 are disposed on the cross rod 535.

The third paint spraying machine 7 comprises a third paint spraying plate 71, a fourth motor 73 which is arranged on a fourth screw 72 of the third paint spraying plate 71 and used for driving the fourth screw 72, a fourth connecting plate 74 is connected to the fourth screw 72, fourth slide rails 75 are symmetrically arranged at two ends of the fourth screw 72, a fourth slider 76 is arranged on the fourth slide rails 75, the fourth connecting plate 74 is arranged on the fourth slider 76, a jacking rotary cylinder 77 is arranged on the fourth connecting plate 74, and a fourth feeding device 78 used for driving the paint spraying gun 8 to move left and right is arranged on the jacking rotary cylinder 77.

The peripheral walls of the two ends of the positioning gun 3 are respectively in threaded connection with a positioning plate 36, and the positioning plates 36 are screwed into the fitting mounting sleeve 215 so as to position the positioning gun 3 in the length direction.

Adjusting screw 21's one end demountable installation has adjusting handle 211, the constant head tank has been seted up to the one end of screw rod, adjusting handle 211 is last be equipped with the reference column of constant head tank looks adaptation, arrange the reference column in the constant head tank in, rotatory adjusting handle 211 drives adjusting screw 21 rotatory, and the back is accomplished in the distance adjustment between the adjusting nut 214 on preceding screw thread 212 and the back screw thread 213, and the handle 211 is adjusted to the detachable, the follow-up spraying paint of being convenient for.

A piston rod 34 in a positioning gun 3 extends into a mounting hole 11 of a storage battery shell 1, a limiting ring 351 is attached to the inner wall of the storage battery shell 1, and then the storage battery shell 1 is positioned, the positioning effect is good, so that a paint spraying mechanism can spray paint on the outer side wall and the upper end of the storage battery shell 1, and repeated clamping is not needed; the adjusting screw 21 is provided with a front thread 212 and a rear thread 213 at intervals, which have opposite rotation directions, and the battery shell 1 with different intervals of the mounting holes 11 can be satisfied by rotating the adjusting nut 214; the supporting mechanism 4 is arranged to facilitate the positioning gun 3 to position the storage battery shell 1, the sealing ring 323 with the cross section shaped like a Chinese character <' > is arranged on the periphery of the convex column 321, and the cylinder cover 32 is screwed in the cylinder cover 32 in a screwing manner, so that the sealing effect of the cylinder cover 32 and the cylinder body 31 is good; a U-shaped sealing sleeve 325 is mounted in the sealing groove 324 to provide a good seal between the piston rod 34 and the cylinder head 32.

The utility model discloses a basic operating principle does:

the concrete operation of a paint spraying device for a storage battery shell is as follows:

1. at the beginning, the piston rod 34 in the positioning gun 3 is in a non-air inlet state, and the jacking rotary cylinder 77 rotates to rotate the fourth feeding device 78 to a position where the length direction of the fourth screw 72 is parallel;

2. the clamping portion 422 clamps the outer wall of the battery case 1 by the elastic force of the spring 426 by placing the battery case 1 on the support mechanism 4 and slightly aligning the mounting hole 11 with the infrared ray emitted from the infrared generator 352;

3. the electromagnetic valve 231 controls the air pump 23 to inflate the positioning gun 3, so that the piston rods 34 in the positioning gun 3 respectively extend into the mounting holes 11 of the battery shell 1, the limiting ring 351 is attached to the inner wall of the battery shell 1, the battery shell 1 is positioned, and the supporting cylinder 41 retracts until the lower end face of the cross plate 42 is attached to the upper end face of the rotary seat 2;

4. the jacking rotary air cylinder 77 retracts to the original position to drive the fourth feeding device 78 to rotate to the upper end of the storage battery shell 1, the paint spraying guns 8 of the first paint spraying machine 5 and the second paint spraying machine 6 respectively advance to be close to the storage battery shell 1, and the first paint spraying machine 5, the second paint spraying machine 6 and the third paint spraying machine 7 respectively spray paint;

5. the paint guns 8 on the first paint sprayer 5 and the second paint sprayer 6 retract, the jacking rotary air cylinder 77 rotates to rotate the fourth feeding device 78 to a position where the length direction of the fourth screw 72 is parallel, and the rotary seat 2 rotates for 90 degrees;

6. the paint spraying guns 8 of the first paint spraying machine 5 and the second paint spraying machine 6 respectively advance to be close to the storage battery shell 1, and the first paint spraying machine 5 and the second paint spraying machine 6 spray paint on the storage battery shell 1;

7. after the painting is completed, the piston rod 34 in the positioning gun 3 is retracted to the original position under the control of the electromagnetic valve 231, and the battery case 1 is removed and replaced.

The above is only the preferred embodiment of the present invention, so all according to the utility model discloses a patent application scope structure, characteristic and principle do equivalent change or decorate, all include the utility model discloses a patent application scope, and the length direction of adjusting screw 21 in fig. 4 is the fore-and-aft direction, and the direction of launching of spring 426 is left right direction.

Claims (9)

1. A paint spraying apparatus for a battery case, characterized in that: comprises a storage battery shell (1), a positioning mechanism and a paint spraying mechanism, wherein the side wall of the storage battery shell (1) is provided with a mounting hole (11), the positioning mechanism is used for clamping the storage battery shell (1), the paint spraying mechanism is used for spraying paint on the storage battery shell (1), the positioning mechanism comprises a rotating seat (2), an adjusting screw rod (21) is arranged on the upper end surface of the rotating seat (2), one end of the adjusting screw rod (21) is provided with a detachable adjusting handle (211), a front thread (212) and a rear thread (213) with opposite rotation directions are arranged on the adjusting screw rod (21) at intervals, the front screw thread (212) and the rear screw thread (213) are both in threaded connection with an adjusting nut (214), the adjusting nuts (214) are respectively provided with an installation sleeve (215), the length direction of the installation sleeve (215) is vertical to the length direction of the adjusting screw rod (21), a positioning gun (3) with a cavity is arranged in the mounting sleeve (215);

the auxiliary mechanism convenient for adjusting the position of the positioning gun (3) is arranged on the rotary seat (2), the auxiliary mechanism comprises a polished rod (22) arranged at an interval with the adjusting screw rod (21), auxiliary supporting seats (221) are installed at two ends of the polished rod (22), a guide sleeve (222) is installed on the polished rod (22), an auxiliary sleeve (223) consistent with the length direction of the installation sleeve (215) is arranged on the guide sleeve (222), the positioning guns (3) are respectively installed in the installation sleeve (215) and the auxiliary sleeve (223), and the adjusting handle (211) is rotated so that the adjusting screw rod (21) rotates to drive the two positioning guns (3) to be relatively close to or far away; an air pump (23) for providing an air source for the positioning gun (3) and an electromagnetic valve (231) for controlling the air source are respectively arranged between the adjusting screw rod (21) and the polished rod (22);

the positioning gun (3) comprises a cylinder body (31) with two through ends, the two ends of the cylinder body (31) are in threaded connection with a cylinder cover (32), a convex column (321) matched with a cavity is extended in the cylinder cover (32), flanges (311) are symmetrically arranged in the cylinder body (31), a piston (33) is arranged between the convex column (321) and the flanges (311), a piston rod (34) connected with the piston (33) into a whole is arranged on the piston (33), the piston rod (34) extends out of the cylinder cover (32), a limiting sleeve (35) is detachably mounted on the piston rod (34) extending out of the cylinder cover (32), a limiting ring (351) is arranged on the limiting sleeve (35), an infrared generator (352) is embedded in one end of the limiting ring (351), and supporting mechanisms (4) are symmetrically arranged in the length direction of the positioning gun (3), the supporting mechanism (4) comprises a supporting cylinder (41) arranged on the rotating seat (2), a cross plate (42) is arranged on a piston rod (34) of the supporting cylinder (41), the cross plate (42) comprises a supporting portion (421) used for supporting the storage battery shell (1) and a clamping portion (422) used for clamping the storage battery shell (1), a guide groove (423) is formed in the clamping portion (422) along the length direction of the positioning gun (3), a guide block (424) capable of sliding along the guide groove (423) is arranged in the guide groove (423), the outer end of the clamping portion (422) protrudes upwards to form a fixing portion (425), and a spring (426) is arranged between the fixing portion (425) and the guide block (424) in a propping manner;

the paint spraying mechanism comprises a first paint spraying machine (5) used for spraying paint on the side wall of the storage battery shell (1), a second paint spraying machine (6) arranged relative to the first paint spraying machine (5) and a third paint spraying machine (7) used for spraying paint on the upper portion of the storage battery shell (1).

2. A paint spraying apparatus for a battery case according to claim 1, characterized in that: annular grooves (322) are formed in the two ends of the cylinder cover (32), the annular grooves (322) penetrate through the opening end of the positioning gun (3), a sealing ring (323) with a cross section shaped like a Chinese character <' > is arranged on the periphery of the protruding column (321), and the cylinder cover (32) is screwed into the cylinder body (31) in a screwing mode, so that the sealing ring (323) is tightly abutted between the end portion of the cylinder body (31) and the cylinder cover (32).

3. A paint spraying apparatus for a battery case according to claim 1, characterized in that: be equipped with collar (331) on the lateral wall of piston (33), install sealing ring (332) in collar (331), set up seal groove (324) that the cross-section is L shape in projection (321), install U-shaped seal cover (325) in seal groove (324), the both ends of U-shaped seal cover (325) are supported respectively and are located the both ends of projection (321).

4. A paint spraying apparatus for a battery case according to claim 1, characterized in that: and cushion pads (333) are attached to two ends of the piston (33).

5. A paint spraying apparatus for a battery case according to claim 1, characterized in that: an accommodating box (24) for accommodating an air pipe is arranged between the two positioning guns (3), and the accommodating box (24) is fixed on the rotary seat (2) through a fastener.

6. A paint spraying apparatus for a battery case according to claim 1, characterized in that: first paint spraying machine (5) and second paint spraying machine (6) all include first seat (51) and the spray gun (8) of spraying paint, install respectively on first seat (51) of spraying paint first feeding device (52) that are used for driving spray gun (8) seesaw, be used for driving second feeding device (53) of spray gun (8) up-and-down motion and be used for driving third of spray gun (8) side-to-side motion and advance and give device (54).

7. A paint spraying apparatus for a battery case according to claim 6, characterized in that: the first feeding device (52) comprises a first motor (521), a first screw (522), a first supporting seat (523), a first sliding rail (524), a first sliding block (525) and a first sliding plate (526), one end of the first screw (522) is connected with a motor shaft of the first motor (521), the other end of the first screw (522) is installed on the first supporting seat (523), the first sliding rail (524) is symmetrically arranged at two ends of the first screw (522), the first sliding rail (524) is installed on the first sliding block (525), the first sliding plate (526) is connected with the first sliding block (525) and is in threaded connection with the first screw (522), the second feeding device (53) comprises second mounting plates (531) symmetrically arranged at two ends of the first sliding rail (524), a second auxiliary rod (532) is installed on the second mounting plate (531) at one end, and a second screw (533) is installed on the second mounting plate (531) at the other end, the second motor (534) used for driving the second screw (533) to rotate is connected to the second screw (533), the second screw (533) is connected with a cross rod (535), the other end of the cross rod (535) is guided and arranged on the second auxiliary rod (532), the cross rod (535) is provided with a third screw (541), a third motor (542) used for driving the third screw (541), a third nut (543) connected to the third screw (541) and a paint spraying gun (8) arranged on the third nut (543).

8. A paint spraying apparatus for a battery case according to claim 1, characterized in that: third paint spraying machine (7) include third paint spraying plate (71), install in fourth screw rod (72) of third paint spraying plate (71) and be used for driving fourth screw rod (72) fourth motor (73), be connected with fourth connecting plate (74) on fourth screw rod (72), the both ends symmetry of fourth screw rod (72) is equipped with fourth slide rail (75), is equipped with fourth slider (76) on fourth slide rail (75), install on fourth slider (76) fourth connecting plate (74), install jacking revolving cylinder (77) on fourth connecting plate (74), install fourth feeding device (78) that are used for driving spray gun (8) side-to-side movement on jacking revolving cylinder (77).

9. A paint spraying apparatus for a battery case according to claim 1, characterized in that: all threaded connection has locating plate (36) on the both ends perisporium of location rifle (3), locating plate (36) screw in to laminating installation cover (215) so that fix a position the length direction of location rifle (3).

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