CN115159419B - Cap screwing machine for pump cap and cap screwing method thereof - Google Patents

Abstract

The invention discloses a cap screwing machine for a pump cap and a cap screwing method thereof, belonging to the field of automatic packaging machinery. The cap screwing machine includes: the bottle clamping and conveying device comprises a frame, an equidistant cover taking mechanism and a bottle clamping and conveying mechanism, wherein the equidistant cover taking mechanism comprises two first conveying belts which are parallel to each other and are arranged on the frame at a preset gap; the bottle clamping transmission mechanism is positioned below the cover taking mechanism, and at least a partial area is positioned below an extension line of the cover taking mechanism; the tracking cap screwing mechanism comprises a sliding component arranged on one side of the equidistant cap taking mechanism and one side of the bottle clamping transmission mechanism, a lifting module arranged on the output end of the sliding component, and a cap screwing grabbing head arranged on the output end of the lifting module. According to the invention, the pump cover is grabbed by the cover screwing grabbing head, then the pump cover is transferred to the bottle mouth of the bottle body to be packaged by matching the sliding component and the lifting module, and finally the pump cover is driven by the cover screwing wheel to rotate so as to screw the pump cover into the bottle mouth of the bottle body to be packaged, so that the automatic cover screwing of the pump cover is realized.

Description

Cap screwing machine for pump cap and cap screwing method thereof

Technical Field

The invention belongs to the field of automatic packaging machinery, and particularly relates to a cap screwing machine for a pump cap and a cap screwing method thereof.

Background

At present, the actions such as cap feeding and cap screwing of a pump cap tracking cap screwing machine depend on manual cap feeding pre-screwing or cap feeding of a multi-stage manual cap feeding runway, and a plurality of cap arranging devices are adopted for cap feeding of a machine so as to achieve an automatic effect, so that cost is increased dramatically. Such equipment has low automation degree, low efficiency, and consumes a large amount of manpower and financial resources, which is unfavorable for the development of enterprises.

Disclosure of Invention

In order to overcome the technical defects, the invention provides a capping machine for a pump cap and a capping method thereof, which are used for solving the problems related to the background technology.

In one aspect, the invention provides a cap screwing machine for a pump cap, wherein the pump cap comprises a cap body, a pump pipe arranged at the bottom of the cap body, a discharge pipe arranged at the upper part of the cap body, and a pump assembly arranged on the cap body and used for communicating the pump pipe and the discharge pipe; the cap screwing machine includes:

a frame;

the equidistant cover taking mechanism comprises two first conveying belts which are parallel to each other and are arranged on the rack at a preset gap, and the equidistant cover taking mechanism is suitable for enabling the pump covers to be arranged on the first conveying belts at equal distances and move forwards along the first conveying belts;

the bottle clamping transmission mechanism is positioned below the equidistant cover taking mechanism, and at least a partial area is positioned below an extension line of the equidistant cover taking mechanism; the bottle clamping and conveying mechanism is suitable for enabling bottles to be packaged to be arranged on the bottle clamping and conveying mechanism at equal distance and to move forwards along the bottle clamping and conveying mechanism;

the tracking cap screwing mechanism comprises a sliding component arranged on one side of the equidistant cap taking mechanism and one side of the bottle clamping transmission mechanism, a lifting module arranged on the output end of the sliding component, and a cap screwing grabbing head arranged on the output end of the lifting module; the cap screwing grabbing head comprises at least three cap screwing wheels which rotate in the same direction, and the cap screwing wheels are propped against the periphery of the cap body;

the pump cover is grabbed by the cover screwing grabbing head, then the pump cover is transferred to the bottle mouth of the bottle body to be packaged by matching the sliding component and the lifting module, and finally the pump cover is driven by the cover screwing wheel to rotate to be screwed into the bottle mouth of the bottle body to be packaged.

Preferably or alternatively, the timing belt of the first conveyor belt is perpendicular to the ground, and the cover body of the pump cover protrudes from the upper surface of the first conveyor belt, and the pump tube or pump assembly passes through the predetermined gap.

Preferably or alternatively, the equidistant cap taking mechanism further comprises:

the first mounting seat is fixedly mounted on the frame and used for mounting the first transmission belt;

the clamping piece comprises claw bodies uniformly distributed on the first conveying belt, a fixed shaft penetrating through the upper surface of the claw bodies, a reverse hooking piece which is arranged on the fixed shaft and partially exposed out of the claw bodies, and a torsion spring which is sleeved on the fixed shaft and used for keeping a preset included angle between the reverse hooking piece and the claw bodies; for clamping the pump assembly or pump tube; the clamping pieces on the two sides are matched to form an encircling shape, so that the clamping effect on the pump pipe or the pump assembly is realized;

the material blocking assembly is arranged at the feed inlets of the two first conveying belts and comprises a needle-shaped air cylinder and a connecting rod mechanism; one end of the connecting rod mechanism is connected with the needle-shaped air cylinder, and the other end of the connecting rod mechanism is positioned at a preset gap between the first conveying belts to block the pump cover.

Preferably or alternatively, the bottle clamping and conveying mechanism comprises: the conveying chain plate is arranged on the rack, two second conveying belts which are arranged above the chain plate, are parallel to each other and are arranged below the first conveying belt at a preset interval, and two third conveying belts which are parallel to each other and are arranged below the extension line of the first conveying belt at a preset interval;

by adjusting the transmission speed of the second transmission belt, bottles with different distances are attached by the speed difference between the second transmission belt and the bottom transmission chain plate, and bottles to be packaged are enabled to enter the third transmission belt equidistantly when the bottles are released.

Preferably or alternatively, clamping adjustment assemblies are arranged at the bottoms of the second conveying belt and the third conveying belt and are suitable for adjusting preset intervals between the second conveying belts and between the third conveying belts, so that the second conveying belt and the third conveying belt can just clamp the bottle body.

Preferably or alternatively, the cap screwing gripper comprises:

the third mounting seat is arranged at the output end of the lifting module;

a central shaft mounted on the third mounting seat and positioned above a predetermined gap between the first conveyor belts, and a fourth mounting seat is arranged at the bottom of the central shaft;

the rotating shaft is sleeved outside the central shaft, the upper end of the rotating shaft is in transmission connection with the third motor, and the lower end of the rotating shaft is provided with an output gear;

the cover screwing wheels are provided with four, the upper parts of the cover screwing wheels are provided with connecting shafts, the other ends of the connecting shafts are provided with left and right follow-up gears, and the cover screwing wheels can be meshed with the output gears in the cover screwing process;

and the telescopic cylinder is fixedly arranged on the fourth mounting seat and is suitable for pushing the connecting shaft and the cap screwing wheel to move left and right along the transmission direction perpendicular to the first transmission belt so as to form a clamping jaw.

Preferably or optionally, the tracking cap screwing mechanism further comprises a tube stroking assembly;

the tube straightening assembly includes: the pipe straightening device comprises a thumb cylinder fixedly arranged at the fixed end of the lifting module, two pipe straightening arms arranged at the output end of the thumb cylinder, and a pipe straightening groove arranged at one end of the pipe straightening arm far away from the thumb cylinder;

the tube straightening grooves on the two sides form a surrounding shape, clamp the pump tube, and straighten the pump tube along with the rising of the pump cover.

Preferably or optionally, the bottoms of the equidistant cover taking mechanism and the bottle clamping transmission mechanism are respectively provided with a screw rod lifter; and adjusting the equidistant cover taking mechanism and the bottle clamping transmission mechanism relative to the ground, wherein the equidistant cover taking mechanism and the bottle clamping transmission mechanism are spaced.

Preferably or optionally, a cover arranging device is further arranged at the feeding position of the first conveying belt and is suitable for conveying the pump cover to the equidistant cover taking mechanism in the upward direction of the cover body.

On the other hand, the invention also provides a cap screwing method based on the cap screwing machine for the pump cap, which comprises the following steps:

step 1, conveying a pump cover to an equidistant cover taking mechanism in an upward direction of a cover body through a cover arranging device or manual cover placing;

step 2, at the moment, the needle type air cylinder is in an extension state, the front connecting rod blocks the pump cover at two sides and is kept at a certain position to block the pump cover, when the clamping piece moves along with the first conveying belt, when the clamping piece moves to a cover taking position, the hooking and reversing pieces at two sides form a surrounding shape to hook the pump assembly or the pump pipe of the pump cover, the pump cover is forced to move along the first conveying belt to move forward, the bottle cover is dragged to be separated from the material blocking assembly, and the material blocking assembly passively opens the connecting rod mechanism under the dragging action of the pump cover to release the bottle cover;

step 3, under the transmission action of the clamping piece and the first transmission belt, the covers are equidistantly arranged on the first transmission belt and move forwards along the first transmission belt; the cover body of the pump cover protrudes out of the surface of the first conveyor belt;

step 4, when the pump cover moves to a processing station of the tracking cap screwing mechanism, the position of the cap screwing grabbing head is adjusted to a preset gap between the first conveying belts through matching of the sliding component and the lifting module, and then the distance between cap screwing wheels is adjusted through the telescopic cylinder, so that the clamping of the cover body is realized; meanwhile, the thumb cylinder drives the tube straightening arms at two sides to move, so that a tube straightening groove is formed to encircle, the pump tube is clamped, and the pump tube is straightened along with the rising of the pump cover; the sliding speed of the sliding component is the same as the transmission speed of the first transmission belt, so that the relative rest between the pump cover and the spiral cover grabbing head is ensured;

step 5, when the step 1 to the step 4 are executed, the bottle body clamps the bottle conveying mechanism in an unordered state, when the bottle body passes through the second conveying belt, the bottle body is clamped, bottles with different intervals are attached through the speed difference between the bottle body and the bottom chain plate, and the requirement of equal distance is met when the bottles are released; the transmission speed of the third transmission belt is the same as the transverse moving speed of the sliding assembly, so that the relative rest between the pump cover and the bottle body is ensured;

and 6, matching and adjusting the position of the cap screwing and grabbing head through the sliding component and the lifting module to transfer the pump cap to the bottle mouth of the bottle body to be packaged, and then driving the rotating shaft to rotate through the third motor, so as to drive the three cap screwing wheels to rotate in the same direction, and forcing the pump cap to rotate so as to screw the pump cap into the bottle mouth of the bottle body to be packaged.

The invention relates to a cap screwing machine for a pump cap and a cap screwing method thereof, which have the following beneficial effects compared with the prior art:

1. the invention uses equidistant cap taking mechanism, tracking cap screwing mechanism and bottle clamping transmission mechanism; the position between the three is designed, and compared with the similar machine type on the market, the machine has the advantages of small occupied area (under the condition of the same number of heads), wide application range, simple structure and convenient maintenance.

2. According to the structural characteristics of the pump cover, the traditional mechanical claw type cover screwing device is replaced by at least three cover screwing wheels rotating in the same direction, so that the discharging pipe can be exposed at the gap between the cover screwing wheels, and the cover screwing function is realized.

3. According to the invention, two first transmission belts are designed to transmit in a combined mode according to the structural characteristics of the pump cover, so that the accuracy and stability of the action are ensured. In addition, a preset gap is reserved between the two first conveying belts, so that the pump assembly and the pump pipe penetrate through the preset gap, the cover body is reserved to protrude out of the upper surface of the first conveying belts, and the cover body can be conveniently grasped by the cap screwing grabbing head.

4. According to the invention, the clamping piece is designed on the synchronous belt of the first conveying belts, and the first material blocking assemblies are arranged at the feed inlets of the two first conveying belts, so that the pump covers are equidistantly arranged on the first conveying belts and move forwards to ensure the stability of cover feeding.

5. According to the invention, by designing the second conveying belt and the third conveying belt, on one hand, a matching speed is provided for tracking the cap screwing action; on the other hand, the spacing of the bottles is adjusted through the second conveying belt, so that the spacing is kept consistent, and the stability of bottle feeding is ensured.

6. The bottle body clamping device is suitable for adjusting the preset intervals between the second conveying belts and the third conveying belts through the clamping adjusting assembly, so that the second conveying belts and the third conveying belts just can clamp the bottle body, and the bottles can be ensured to move forwards stably in a clamped state and do not shake.

7. According to the invention, four cap screwing wheels are adopted to replace the traditional mechanical clamping jaw, on one hand, the spacing between the cap screwing wheels is adjusted through the telescopic cylinder, so that the cap body is clamped; on the other hand, the cover body is driven to rotate by the same-direction rotation of the three cover screwing wheels, so that the cover screwing action is realized.

8. According to the invention, the tube straightening assembly is designed, and the tube straightening arms at two sides are driven to move by the thumb cylinder, so that the tube straightening groove is formed to encircle, the pump tube is clamped, and the pump tube is straightened along with the rising of the pump cover, so that the pump tube can be conveniently and accurately inserted into a bottle.

9. According to the invention, the equidistant cover taking mechanism and the bottle clamping transmission mechanism are adjusted relative to the ground through the screw rod lifter, and the distances between the equidistant cover taking mechanism and the bottle clamping transmission mechanism are adjusted so as to meet the processing requirements of bottle bodies with different heights.

10. According to the invention, through connecting the cover arranging device, the pump covers are ensured to enter the equidistant cover taking mechanism in a preset direction, the condition of manual cover arranging at present is solved, and the processing efficiency of the cover screwing machine is improved.

In conclusion, the invention provides the full-automatic cap screwing machine aiming at the pump cap, which has the advantages of simple integral structure, safe use, convenient maintenance, labor cost saving and great improvement of cap screwing efficiency;

drawings

Fig. 1 is a schematic view of an exemplary structure of a pump cover in the present invention.

Fig. 2 is a schematic view showing an exemplary structure of a bottle body to be packaged in the present invention.

Fig. 3 is a schematic structural view of the capping machine in the present invention.

Fig. 4 is a schematic structural view of the equidistant cap taking mechanism in the invention.

Fig. 5 is a schematic structural view of a first conveyor belt according to the present invention.

Fig. 6 is a schematic structural view of the clamping member in the present invention.

FIG. 7 is a schematic view of a material blocking assembly according to the present invention.

Fig. 8 is a schematic structural view of a bottle clamping and conveying mechanism in the invention.

Fig. 9 is a schematic structural view of a clamping adjustment assembly according to the present invention.

Fig. 10 is a schematic view of the structure of the cap tracking mechanism in the present invention.

FIG. 11 is a schematic view of the structure of the slip assembly of the present invention.

Fig. 12 is a schematic view of the structure of the cap screwing gripper of the present invention.

Fig. 13 is a schematic cross-sectional view of a screw cap gripper according to the present invention.

FIG. 14 is a schematic view of a tube assembly according to the present invention.

Fig. 15 is a schematic view of the structure of the cap screwing machine with the cap in the invention.

The reference numerals are:

10. a pump cover;

11. a cover body;

12. a discharge pipe;

13. a pump assembly;

14. a pump tube;

21. a bottle body;

22. a bottle mouth;

31. a cap arranging device;

32. a frame;

33. equidistant cover taking mechanism;

34. tracking a cap screwing mechanism;

35. a bottle clamping transmission mechanism;

36. a screw rod lifter;

331. a first conveyor belt; 3311. a first motor; 3312. a driving wheel; 3313. driven wheel; 3314. a synchronous belt; 3315. a support plate;

332. a clamping member; 3321. a claw body; 3322. a torsion spring; 3323. A reverse hook piece; 3324. a fixed shaft;

333. a first photosensor;

334. a material blocking component; 3341. a needle cylinder; 3342. a link mechanism;

335. a first mount;

341. a slip assembly; 3411. a mounting plate; 3412. a sliding guide rail; 3413. a sliding rack; 3414. a second motor; 3415. a second mounting base;

342. a lifting module; 3421. a third mount;

343. screwing the cover claw head; 3431. a third motor; 3432. a rotating shaft; 3433. an output gear; 3434. a follower gear; 3435. a telescopic cylinder; 3436. a connecting shaft; 3437. A cap screwing wheel; 3438. a central shaft; 3439. a fourth mount;

344. a tube straightening assembly; 3441. a thumb cylinder; 3442. tube straightening arms; 3443. a tube straightening groove;

351. a second conveyor belt;

352. a third conveyor belt;

353. a clamping adjustment assembly; 3531. a hand wheel; 3532. a screw rod is opened and closed; 3533. limiting guide posts; 3534. a fifth mount; 3535. a ball bearing; 3536. a mounting frame;

354. and a second photosensor.

Description of the embodiments

In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the invention may be practiced without one or more of these details. In other instances, well-known features have not been described in detail in order to avoid obscuring the invention.

In view of the particularity of the pump cap 10, and referring to fig. 1 to 2, the structure related to the pump cap 10 and the bottle 21 to be packaged is defined, the pump cap 10 includes a cap 11, a pump pipe 14 disposed at the bottom of the cap 11, a discharge pipe 12 disposed at the upper portion of the cap 11, and a pump assembly 13 disposed on the cap 11 for communicating the pump pipe 14 and the discharge pipe 12; a bottle mouth 22 is provided on the upper surface of the bottle body 21. The specific structure of the pump assembly 13 is the prior art, and will not be described in detail in this application.

Referring to fig. 3 to 15, a cap screwing machine for a pump cap 10 includes: a frame 32, an equidistant cap taking mechanism 33, a bottle clamping and conveying mechanism 35 and a tracking cap screwing mechanism 34.

Wherein, the frame 32 plays a supporting role, and the equidistant cap taking mechanism 33, the bottle clamping and conveying mechanism 35 and the tracking cap screwing mechanism 34 are all arranged on the frame 32.

The equidistant cover taking mechanism 33 includes two sets of first conveying belts 331 provided on the frame 32 with a predetermined gap; wherein the timing belt 3314 of the first conveyor belt 331 is perpendicular to the ground, and the cover 11 of the pump cover 10 protrudes from the upper surface of the first conveyor belt 331, and the pump assembly 13 and the pump pipe 14 pass through the predetermined gap. The two first conveyor belts 331 are combined together to perform a function of holding the pump cover 10 and to move the pump cover 10 forward along the first conveyor belts 331.

Referring to fig. 1, the first conveying belt 331 includes: a support plate 3315, a first motor 3311, a driving pulley 3312, a driven pulley 3313, a timing belt 3314, a support plate 3315, and a clamp 332. The driving wheel 3312 and the driven wheel 3313 are mounted on the frame 32, the synchronous belt 3314 is sleeved on the driving wheel 3312 and the driven wheel 3313, the clamping members 332 are uniformly arranged on the synchronous belt 3314, the supporting plate 3315 is positioned above the synchronous belt 3314, the gap between the two supporting plates 3315 is smaller than the diameter of the cover body 11, the cover body 11 of the pump cover 10 is positioned above the supporting plate 3315, the supporting effect is achieved, and the pump assembly 13 of the pump cover 10 is just positioned at the clamping members 332 and is clamped by the clamping members 332 at the two sides, so that the driving effect is achieved; the first motor 3311 drives the driving wheel 3312 to rotate, thereby driving the pump cover 10 to move forward along the first conveyor 331. It will be understood by those skilled in the art that the timing belt 3314 may be replaced by other structures such as a chain, a wedge belt, a link plate, and the like.

In addition, a first photoelectric sensor 333 is disposed on the mounting seat on the first conveyor 331, and is used for origin detection, so as to ensure the accuracy of starting the zeroing position.

The equidistant cap taking mechanism 33 further comprises a clamping piece 332 and a blocking assembly 334. Wherein the clamping member 332 includes: a pawl main body 3321, a torsion spring 3322, a reverse hook piece 3323, and a fixed shaft 3324; the claw main body 3321 is fixedly mounted on the synchronous belt 3314 at a predetermined interval, a fixed shaft 3324 is penetrated through the upper surface of the claw main body 3321, the reverse hook piece 3323 is arranged on the fixed shaft 3324, a torsion spring 3322 is sleeved on the fixed shaft 3324, one end of the torsion spring 3322 is connected with the reverse hook piece 3323, the other side of the torsion spring 3322 is connected with the claw main body 3321, a predetermined included angle is formed between the reverse hook piece 3323 and the claw main body 3321, part of the reverse hook piece 3323 is exposed out of the claw main body 3321 and is matched with the claw main body 3321 on the synchronous belt 3314 at the other side to form a surrounding shape, so that the clamping effect on the pump cover 10 is realized, and the pump cover 10 is pushed to move forwards equidistantly under the action of the first transmission belt 331. The material blocking component 334 is arranged at the feed inlets of the two first conveying belts 331, and the material blocking component 334 comprises a needle-shaped air cylinder 3341 and a connecting rod mechanism 3342; one end of the link mechanism 3342 is connected with the needle cylinder 3341, and the other end is positioned at a preset gap between the first conveyor belts 331 to block the pump cover 10; the needle cylinder 3341 is connected with a pressure regulating valve for regulating the strength.

Normally, the needle cylinder 3341 is in an elongated state, the front end connecting rod blocks the pump cover 10 at two sides and keeps at a certain position, the pump cover 10 is blocked, when the clamping piece 332 moves to the cover taking position, the hooking and reversing pieces at two sides form a surrounding shape, the pump assembly 13 of the pump cover 10 is hooked, the pump cover 10 is clamped to move forward to the first conveying belt 331, the pulling bottle cover is separated from the blocking component 334, the blocking component 334 is pulled by the pump cover 10 to passively open the connecting rod mechanism 3342, the bottle cover is released, and the cover is equidistantly arranged on the first conveying belt 331 under the conveying action of the clamping piece 332 and the first conveying belt 331 and moves forward along the first conveying belt 331.

The bottle clamping and conveying mechanism 35 is positioned below the equidistant cover taking mechanism 33, and at least a partial area is positioned below the extension line of the equidistant cover taking mechanism 33; adapted to arrange the bottles 21 to be packaged equidistantly on the bottle clamping and conveying mechanism 35 and to move forward along the bottle clamping and conveying mechanism 35.

The bottle clamping and conveying mechanism 35 is two groups of conveying mechanisms, namely two second conveying belts 351 which are arranged above the chain plate, are parallel to each other and are arranged below the first conveying belt 331 at a preset interval, and two third conveying belts 352 which are parallel to each other and are arranged below the extension line of the first conveying belt 331 at a preset interval; the structure is the same as that of the first conveying belt 331, and will not be further described herein.

Wherein the timing belts 3314 of the two second conveying belts 351 are relatively short, are positioned at the initial section of the bottle clamping conveying mechanism 35, and are arranged above the conveying chain plates; the conveying chain plate is used for conveying the bottle bodies 21 to the bottle clamping conveying mechanism 35, the bottle bodies 21 clamp the bottle conveying mechanism 35 in an unordered state, the bottle bodies 21 are clamped when passing through the second conveying belt 351, bottles with different intervals are attached through the speed difference between the conveying chain plate and the bottom chain plate, and the requirement of equal distance is met when the bottles are released;

the timing belts 3314 of the two third conveying belts 352 are relatively long, and the cover screwing function is completed by matching with the cover screwing tracking mechanism 34; this transport mechanism is driven by two servo motors, guarantees that the bottle is by the steady that moves ahead under the clamping state, in addition, second conveyer belt 351 and third conveyer belt 352 bottom set up the centre gripping adjustment subassembly 353, centre gripping adjustment subassembly 353 includes: the device comprises a mounting frame 3536, a hand wheel 3531, an opening and closing screw rod 3532, a limiting guide post 3533, a fifth mounting seat 3534 and a ball bearing 3535; the mounting frame 3536 is arranged on the frame 32, the opening and closing screw rod 3532 and the limiting guide posts 3533 are arranged on the mounting frame 3536, and the limiting guide posts 3533 are arranged on two sides of the opening and closing screw rod 3532; the opening and closing screw rod 3532 is a screw rod with positive and negative threads on two sides, and two fifth installation seats 3534 are sleeved on the limiting guide post 3533 and the opening and closing screw rod 3532 through opening and closing nuts and ball bearings 3535; the two fifth mounting seats 3534 are used to mount the second and third conveyor belts 351 and 352.

The user can adjust the preset intervals between the second transmission belts 351 and the third transmission belts 352 by rotating the hand wheel 3531, so that the second transmission belts 351 and the third transmission belts 352 can just clamp the bottle body 21, the bottle is ensured to move forwards stably in a clamped state, the bottle does not shake, and a matching speed is provided for tracking the cap screwing action.

The tracking cap screwing mechanism 34 comprises a sliding component 341 arranged on one side of the equidistant cap taking mechanism 33 and the bottle clamping transmission mechanism 35, a lifting module 342 arranged on the output end of the sliding component 341, and a cap screwing grabbing head arranged on the output end of the lifting module 342; the cap screwing grabbing head comprises at least three cap screwing wheels 3437 which rotate in the same direction, the cap screwing wheels 3437 are propped against the periphery of the cap body 11, in the working process, the pump cap 10 is grabbed by the cap screwing grabbing head, then the pump cap 10 is transferred to the bottle mouth 22 of the bottle body 21 to be packaged by matching the sliding component 341 and the lifting module 342, and finally the pump cap 10 is driven to rotate by the cap screwing wheels 3437 to screw the pump cap 10 into the bottle mouth 22 of the bottle body 21 to be packaged.

The slip assembly 341 includes: mounting plate 3411, sliding rail 3412, sliding rack 3413, second motor 3414, drive gear, and second mount 3415; wherein the mounting plate 3411 is fixedly mounted on the frame 32 or can be moved up and down along the frame 32; the sliding rack 3413 and the sliding guide rail 3412 are horizontally installed on the first installation seat 335, the sliding guide rail 3412 is located at the upper side and the lower side of the sliding rack 3413, the second installation seat 3415 is slidably installed on the sliding guide rail 3412, a second motor 3414 is arranged on the second installation seat 3415, a driving gear is arranged at the output end of the second motor 3414, and the driving gear is meshed with the sliding rack 3413. In the sliding process, the second motor 3414 drives the driving gear and the sliding rack 3413 to move relatively, so as to realize the relative sliding between the second mounting seat 3415 and the mounting plate 3411. It will be understood by those skilled in the art that the glide assembly 341 may be other linear motion mechanisms such as a screw mechanism.

The lifting module 342 may be a cylinder-driven linear module, or a servo motor-driven screw linear module, which are all of the prior art, and are not further explained herein.

The cap screwing grabbing head comprises: a third motor 3431, a rotation shaft 3432, an output gear 3433, a follower gear 3434, a telescopic cylinder 3435, a connection shaft 3436, a screwing wheel 3437, a central shaft 3438 and a fourth mounting seat 3439; the third mounting seat 3421 is arranged at the output end of the lifting module 342; a central shaft 3438 is mounted on the third mounting block 3421 above a predetermined gap between the first conveyor belts 331, and a fourth mounting block 3439 is provided at the bottom of the central shaft 3438; the rotating shaft 3432 is sleeved outside the central shaft 3438, the upper end of the rotating shaft 3432 is in transmission connection with the third motor 3431, and the lower end of the rotating shaft 3432 is provided with an output gear 3433; the four cap screwing wheels 3437 are arranged, a connecting shaft 3436 is arranged at the upper part of the cap screwing wheels 3437, a left follow-up gear 3434 and a right follow-up gear 3434 are arranged at the other end of the connecting shaft 3436, and the cap screwing wheels can be meshed with the output gear 3433 in the cap screwing process; the telescopic cylinder 3435 is fixedly mounted on the fourth mounting seat 3439, and is adapted to push the connecting shaft 3436 and the cap screwing wheel 3437 to move left and right along a direction perpendicular to the conveying direction of the first conveying belt 331, so as to form a clamping jaw. The cap screwing grabbing head has two basic functions, namely, the gap between cap screwing wheels 3437 is adjusted through a telescopic cylinder 3435, so that the cap body 11 is clamped; and secondly, the cover 11 is driven to rotate by the same-direction rotation of the three cover screwing wheels 3437, so that the cover screwing action is realized.

The cap tracking mechanism 34 further includes a tube stroking assembly 344; the stroking tube assembly 344 is mounted on the back plate of the cap screwing mechanism lifting module 342, namely the second mounting seat 3415. The stroking assembly 344 includes: a thumb cylinder 3441 fixedly mounted on the fixed end of the lifting module 342, two stroking arms 3442 arranged on the output end of the thumb cylinder 3441, and a stroking groove 3443 arranged on one end of the stroking arm 3442 far from the thumb cylinder 3441; the function of the bottle cap screwing claw head 343 is that after the bottle cap is grasped, the tube straightening cylinder clamps the pump tube 14, and the pump tube 14 is straightened, so that the pump tube 14 can be conveniently and accurately inserted into a bottle.

It should be noted that a second photoelectric sensor 354 is disposed on the mounting frame 3536 of the third conveyor 352, and the second photoelectric sensor 354 is configured to detect a bottle body signal and record a position, and start a cap screwing operation. At this time, the cap screwing and grabbing head is located above the bottle 21, at this time, the transmission speed of the third transmission belt 352 is the same as the lateral movement speed of the sliding component 341, so that the pump cap 10 and the bottle 21 are guaranteed to be relatively static, the third transmission belt 352 does not need to be stopped, and cap screwing efficiency is greatly improved.

Likewise, in the process of completing gripping the pump cap 10 by the cap screwing gripper, the sliding speed of the sliding component 341 is the same as the conveying speed of the first conveying belt 331, so that the relative rest between the pump cap 10 and the cap screwing gripper is ensured; so that the first conveying belt 331 does not need to stop, and the cover taking efficiency is greatly improved.

In a further embodiment, screw lifters 36 are arranged at the bottoms of the equidistant cap taking mechanism 33 and the bottle clamping transmission mechanism 35; the screw rod lifter 36 is driven by four servo motors, and the specific structure thereof is the prior art and will not be described in detail. The equidistant cover taking mechanism 33 and the bottle clamping and conveying mechanism 35 are adjusted relative to the ground, and the distance between the equidistant cover taking mechanism 33 and the bottle clamping and conveying mechanism 35 is adjusted so as to meet the processing requirements of bottle bodies 21 with different heights, and the industrial applicability of the cap screwing machine is improved.

In a further embodiment, the feeding portion of the first conveying belt 331 is further provided with a cap arranging device 31, which is adapted to convey the pump caps 10 to the equidistant cap taking mechanism 33 in an upward direction of the cap body 11, wherein the cap arranging device 31 is specifically designed for the pump caps 10, and the caps are correctly clamped during the cap arranging disc rotation process, and are arranged together, and the remaining caps which are not correctly aligned are removed, so that no clamping stagnation and other phenomena can occur, and after removal, the caps return to the intermediate slewing device again, and continue to rotate under the drive of the turntable. The caps are sent out of the cap sorter 31 in the forward direction and smoothly enter the cap feeding track. Since the cap sorter 31 is not an important point of the present application, it is not described in detail herein, and a man-made material, a mechanical arm, or the like may be used instead in the implementation process.

In order to facilitate understanding of the technical scheme of the capping machine and capping method for the pump cap 10, a brief description will be made of the working principle thereof: step 1, conveying the pump cover 10 to an equidistant cover taking mechanism 33 in the upward direction of a cover body 11 through a cover arranging device 31 or manual cover placing;

step 2, at this time, the needle cylinder 3341 is in an extension state, the front end connecting rod blocks the pump cover 10 at two sides and keeps at a certain position to block the pump cover 10, when the clamping piece 332 moves along with the first conveying belt 331 and moves to the cover taking position, the hooking and reversing pieces at two sides form a surrounding shape to hook the pump assembly 13 or the pump pipe 14 of the pump cover 10, so that the pump cover 10 is forced to move forward along the first conveying belt 331, the dragging bottle cover is separated from the blocking component 334, the blocking component 334 passively opens the connecting rod mechanism 3342 under the dragging action of the pump cover 10 to release the bottle cover;

step 3, under the transmission action of the clamping piece 332 and the first transmission belt 331, the covers are equidistantly arranged on the first transmission belt 331 and move forward along the first transmission belt 331; and the cover 11 of the pump cover 10 protrudes from the upper surface of the first conveying belt 331;

step 4, when the pump cover 10 moves to a processing station of the tracking cap screwing mechanism 34, the position of the cap screwing grabbing head is adjusted to a preset gap between the first conveying belts 331 through the matching of the sliding component 341 and the lifting module 342, and then the distance between cap screwing wheels 3437 is adjusted through the telescopic cylinder 3435, so that the clamping of the cover 11 is realized; meanwhile, the thumb cylinder 3441 drives the tube straightening arms 3442 at two sides to move, so that tube straightening grooves 3443 are formed to encircle, the pump tube 14 is clamped, and the pump tube 14 is straightened along with the rising of the pump cover 10; at this time, the slip speed of the slip assembly 341 is the same as the transport speed of the first transport belt 331, ensuring a relative rest between the pump cap 10 and the cap screwing gripper;

step 5, while executing steps 1 to 4, clamping the bottle body 21 by the bottle conveying mechanism 35 in an unordered state, clamping the bottle body 21 when passing through the second conveying belt 351, and attaching the bottles with different intervals through the speed difference with the bottom chain plate, so that the requirement of equal distance is met when the bottles are released;

step 6, adjusting the position of the cap screwing and grabbing head through the matching of the sliding component 341 and the lifting module 342 to transfer the pump cap 10 to the bottle mouth 22 of the bottle body 21 to be packaged, wherein at the moment, the transmission speed of the third transmission belt 352 is the same as the transverse moving speed of the sliding component 341, so that the relative rest between the pump cap 10 and the bottle body 21 is ensured; then, the third motor 3431 drives the rotating shaft 3432 to rotate, and then drives the three cap screwing wheels 3437 to rotate in the same direction, so that the pump cap 10 is forced to rotate, and the pump cap 10 is screwed into the bottle mouth 22 of the bottle body 21 to be packaged.

In addition, the specific features described in the above embodiments may be combined in any suitable manner without contradiction. The various possible combinations of the invention are not described in detail in order to avoid unnecessary repetition.

Claims (8)

1. Pump cover is with spiral cover machine, pump cover (10) include lid (11), set up pump pipe (14) of lid (11) bottom, set up discharging pipe (12) on lid (11) upper portion to and set up on lid (11), be used for the intercommunication pump pipe (14) and pump assembly (13) of discharging pipe (12), characterized in that, spiral cover machine includes:

a frame (32);

equidistant cover taking mechanism (33) comprising two first conveyor belts (331) parallel to each other and arranged on the frame (32) with a predetermined gap, adapted to arrange the pump covers (10) equidistantly on the first conveyor belts (331) and move forward along the first conveyor belts (331);

the bottle clamping and conveying mechanism (35) is positioned below the equidistant cover taking mechanism (33), and at least a partial area is positioned below an extension line of the equidistant cover taking mechanism (33); is suitable for enabling bottle bodies (21) to be packaged to be arranged on the bottle clamping and conveying mechanism (35) at equal intervals and to move forwards along the bottle clamping and conveying mechanism (35);

the tracking cap screwing mechanism (34) comprises a sliding component (341) arranged on one side of the equidistant cap taking mechanism (33) and one side of the bottle clamping transmission mechanism (35), a lifting module (342) arranged on the output end of the sliding component (341) and a cap screwing grabbing head arranged on the output end of the lifting module (342);

the tracking cap screwing mechanism (34) further comprises a tube stroking assembly (344); the stroking tube assembly (344) includes: the device comprises a thumb cylinder (3441) fixedly arranged at the fixed end of the lifting module (342), two tube straightening arms (3442) arranged at the output end of the thumb cylinder (3441), and a tube straightening groove (3443) arranged at one end of the tube straightening arms (3442) far away from the thumb cylinder (3441); the tube straightening grooves (3443) on the two sides form a surrounding shape and clamp the pump tube (14), and the pump tube (14) is straightened along with the rising of the pump cover (10);

the cap screwing grabbing head comprises:

the third mounting seat (3421) is arranged at the output end of the lifting module (342);

a center shaft (3438) mounted on the third mounting base (3421) above a predetermined gap between the first conveyor belts (331), a fourth mounting base (3439) being provided at the bottom of the center shaft (3438);

a rotating shaft (3432) sleeved outside the central shaft (3438), wherein the upper end of the rotating shaft (3432) is in transmission connection with a third motor (3431), and the lower end of the rotating shaft (3432) is provided with an output gear (3433);

the rotary cover wheel (3437) is provided with at least three rotary cover wheels, the upper part of the rotary cover wheel (3437) is provided with a connecting shaft (3436), the other end of the connecting shaft (3436) is provided with a left and right follow-up gear (3434), and the rotary cover wheel can be meshed with the output gear (3433) in the rotary cover process; the cover rotating wheels (3437) rotate in the same direction, and the cover rotating wheels (3437) are propped against the periphery of the cover body (11);

the telescopic cylinder (3435) is fixedly arranged on the fourth mounting seat (3439) and is suitable for pushing the connecting shaft (3436) and the cap screwing wheel (3437) to move left and right along the transmission direction perpendicular to the first transmission belt (331) to form a clamping jaw;

the pump cover (10) is grabbed by the cover screwing grabbing head, then the pump cover (10) is transferred to the bottle mouth (22) of the bottle body (21) to be packaged by matching the sliding component (341) with the lifting module (342), and finally the pump cover (10) is driven to rotate by the cover screwing wheel (3437) so as to screw the pump cover (10) into the bottle mouth (22) of the bottle body (21) to be packaged.

2. The cap screwing machine for pump caps according to claim 1, wherein the timing belt (3314) of the first conveyor belt (331) is perpendicular to the ground, and the cap body (11) of the pump cap (10) is projected from the upper surface of the first conveyor belt (331), and the pump assembly (13) and the pump pipe (14) pass through the predetermined gap.

3. The capping machine for pump caps as claimed in claim 2, wherein the equidistant capping mechanism (33) further comprises:

a first mounting base (335) fixedly mounted on the frame (32) for mounting the first conveyor belt (331);

the clamping piece (332) comprises claw bodies (3321) uniformly distributed on the first conveying belt (331), a fixed shaft (3324) penetrating through the upper surface of the claw bodies (3321), a reverse hooking piece (3323) which is arranged on the fixed shaft (3324) and partially exposed out of the claw bodies (3321), and a torsion spring (3322) which is sleeved on the fixed shaft (3324) and used for keeping a preset included angle between the reverse hooking piece (3323) and the claw bodies (3321); for clamping the pump assembly (13) or pump tube (14); clamping pieces (332) on two sides are matched to form an encircling shape, so that the clamping effect on the pump pipe (14) or the pump assembly (13) is realized;

the material blocking assemblies (334) are arranged at the feed inlets of the two first conveying belts (331), and the material blocking assemblies (334) comprise needle-shaped air cylinders (3341) and connecting rod mechanisms (3342); one end of the link mechanism (3342) is connected with the needle cylinder (3341), and the other end of the link mechanism is positioned at a preset gap between the first conveyor belts (331) to block the pump cover (10).

4. The capping machine for pump caps as claimed in claim 1, wherein the bottle-gripping transfer mechanism (35) comprises: a conveying link plate provided on the frame (32), two second conveying belts (351) installed above the link plate, parallel to each other, and provided below the first conveying belt (331) at a predetermined interval, and two third conveying belts (352) parallel to each other, and provided below an extension line of the first conveying belt (331) at a predetermined interval;

by adjusting the transmission speed of the second transmission belt (351), bottles with different intervals are attached by the speed difference between the second transmission belt and the bottom transmission chain plate, and bottles (21) to be packaged are enabled to enter the third transmission belt (352) equidistantly when the bottles are released.

5. The capping machine for pump caps according to claim 4, wherein the bottom parts of the second and third conveyor belts (351, 352) are provided with a clamping adjustment assembly (353) adapted to adjust a predetermined interval between the second conveyor belts (351) and between the third conveyor belts (352) so that the second and third conveyor belts (351, 352) just can clamp the bottle body (21).

6. The cap screwing machine for pump caps according to claim 1, wherein screw lifters (36) are arranged at the bottoms of the equidistant cap taking mechanism (33) and the bottle clamping transmission mechanism (35); the equidistant cover taking mechanism (33) and the bottle clamping transmission mechanism (35) are adjusted relative to the ground, and the equidistant cover taking mechanism (33) and the bottle clamping transmission mechanism (35) are spaced.

7. The capping machine for pump caps according to claim 1, wherein the feeding portion of the first conveyor belt (331) is further provided with a cap arranging device (31) adapted to convey the pump caps (10) in a direction in which the caps (11) face upward into the equidistant cap taking mechanism (33).

8. A cap screwing method based on the cap screwing machine for pump caps according to any one of claims 1 to 7, characterized by comprising the steps of:

step 1, conveying a pump cover (10) to an equidistant cover taking mechanism (33) in an upward direction of a cover body (11) through a cover arranging device (31) or manual cover placing;

step 2, at this time, the needle type air cylinder (3341) is in an extension state, the front end connecting rod blocks the pump cover (10) at two sides and keeps at a certain position, the pump cover (10) is blocked, when the clamping piece (332) moves along with the first conveying belt (331), when the clamping piece moves to the cover taking position, the hooking and reversing pieces at two sides form an encircling shape, the pump assembly (13) or the pump pipe (14) of the pump cover (10) are hooked, the pump cover (10) is forced to move along the running front of the first conveying belt (331), the bottle cover is dragged to be separated from the material blocking assembly (334), and the material blocking assembly (334) passively opens the connecting rod mechanism (3342) under the dragging action of the pump cover (10) to release the bottle cover;

step 3, under the transmission action of the clamping piece (332) and the first transmission belt (331), the covers are equidistantly arranged on the first transmission belt (331) and move forwards along the first transmission belt (331); and the cover body (11) of the pump cover (10) protrudes out of the upper surface of the first conveying belt (331);

step 4, when the pump cover (10) moves to a processing station of the tracking cover screwing mechanism (34), the position of the cover screwing grabbing head is adjusted to a preset gap between the first conveying belts (331) through matching of the sliding component (341) and the lifting module (342), and then the distance between cover screwing wheels (3437) is adjusted through a telescopic cylinder (3435), so that the cover body (11) is clamped; meanwhile, the thumb cylinder (3441) drives the tube straightening arms (3442) at two sides to move, so that tube straightening grooves (3443) are formed to encircle, the pump tube (14) is clamped, and the pump tube (14) is straightened along with the rising of the pump cover (10); wherein the slip speed of the slip assembly (341) is the same as the transport speed of the first transport belt (331), ensuring a relative rest between the pump cap (10) and the cap screwing gripper;

step 5, when the steps 1 to 4 are executed, the bottle bodies (21) enter the bottle clamping and conveying mechanism (35) in a disordered state, the bottle bodies (21) are clamped when passing through the second conveying belt (351), bottles with different intervals are attached through the speed difference between the bottle bodies and the bottom chain plate, and the requirement of equal distance is met when the bottles are released; wherein the transmission speed of the third transmission belt (352) is the same as the transverse movement speed of the sliding component (341), so that the relative rest between the pump cover (10) and the bottle body (21) is ensured;

step 6, the position of the cap screwing and grabbing head is adjusted through matching of the sliding component (341) and the lifting module (342) to enable the pump cap (10) to be transferred to the bottle mouth (22) of the bottle body (21) to be packaged, then the third motor (3431) drives the rotating shaft (3432) to rotate, and then the three cap screwing wheels (3437) are driven to rotate in the same direction, so that the pump cap (10) is forced to rotate to enable the pump cap (10) to be screwed into the bottle mouth (22) of the bottle body (21) to be packaged.