CN220925603U - Sponge strip feeding and placing equipment - Google Patents

Abstract

The utility model provides sponge strip feeding and placing equipment, and belongs to the technical field of machinery. The buffer mechanism solves the problem that a buffer mechanism occupies a large space in the existing equipment. The sponge strip feeding and placing device comprises a frame, two first manipulators, a second manipulator and a third manipulator, wherein the first manipulators are arranged side by side left and right, each first manipulator comprises a cross beam and a vertical beam arranged on one side of the cross beam, bases are arranged on the two cross beams, lifting assemblies for driving the corresponding vertical beams to lift are arranged on the bases, a grabbing mechanism for grabbing sponge strips is arranged below each vertical beam, and two first driving assemblies for respectively driving the two cross beams to horizontally move are arranged on the frame; each beam is provided with a second driving component for driving the corresponding base to translate back and forth; the vertical beam is provided with a rotating mechanism for driving the corresponding grabbing mechanism to swing back and forth around the central axis of the vertical beam at two positions of 0 degrees and 90 degrees. This sponge strip pay-off is put equipment reducible buffering station.

Description

Sponge strip feeding and placing equipment

Technical Field

The utility model belongs to the technical field of machinery, and relates to feeding and placing equipment, in particular to sponge strip feeding and placing equipment.

Background

In the existing spring mattress, sponge strips are generally compounded around the mattress core, and the protection effect is mainly achieved. In order to reduce the manual participation and enable mattress production to be more automatic, a manipulator is generally used for grabbing the sponge strips to one side of the bed core, and after the sponge strips are gathered around the bed core, the bed core sponge strips are subjected to compound operation.

The automatic sponge feeding device comprises a horizontal moving mechanism, a clamping jaw mechanism, a sponge buffering mechanism and a first section bar support, wherein the sponge buffering mechanism is arranged on the section bar support, the horizontal moving mechanism and the clamping jaw mechanism are fixedly connected with the sponge buffering mechanism, and the clamping jaw mechanism is arranged on the horizontal moving mechanism.

In order to realize rectangular arrangement of the sponge strips, four feeding devices are required to be arranged in actual use, so that four sponge buffer mechanisms are required to be put into, and a large space is occupied.

Disclosure of utility model

The utility model aims to solve the problems in the prior art, and provides sponge strip feeding and placing equipment capable of reducing the number of caching stations.

The aim of the utility model can be achieved by the following technical scheme: the sponge strip feeding and placing device comprises a frame, and two first manipulators which are arranged side by side left and right, wherein the first manipulators comprise a cross beam and vertical beams arranged on one side of the cross beam, bases are arranged on the two cross beams, lifting assemblies for driving the corresponding vertical beams to lift are arranged on the bases, and a grabbing mechanism for grabbing sponge strips is arranged below each vertical beam; each beam is provided with a second driving component for driving the corresponding base to translate back and forth; the vertical beam is provided with a rotating mechanism for driving the corresponding grabbing mechanism to swing back and forth around the central axis of the vertical beam at two positions of 0 degrees and 90 degrees.

Under the first drive assembly, rotary mechanism and manipulator a common cooperation, realize grabbing material mechanism translation and horizontal swing in vertical direction in six directions of preceding, back, left and right, upper and lower, just so need set up about two buffering stations that set up side by side alright satisfy sponge strip rectangle and arrange to greatly reduced space occupies.

In the sponge strip feeding and placing equipment, the two ends of each cross beam are connected with the rack in a left-right sliding mode, so that the cross beams slide stably, and the operation precision and stability of the equipment are improved.

In the sponge strip feeding and placing equipment, the first racks are horizontally fixed on the rack, and the first racks are arranged in parallel front and back; the first driving assembly comprises two first motors which are respectively fixed at two ends of the beam, a first gear is fixed on a main shaft of each first motor, and the first gear is meshed with a corresponding first rack. The transverse beam realizes left-right translation by utilizing the first motor, the first gear and the first rack, and can greatly enlarge the distance between the two grabbing mechanisms so as to adapt to mattresses with more sizes, and the transverse beam has the advantages of stable work, convenient operation and the like.

In the sponge strip feeding and placing equipment, the rotating mechanism comprises a slewing bearing and a rotating motor fixed on the vertical beam, the slewing bearing comprises an inner ring and an outer ring, the outer ring is of an outer ring type, the material grabbing mechanism is arranged on the corresponding inner ring, and a driving gear meshed with the outer ring is fixed on a main shaft of the rotating motor. By adopting the design, the device has the advantages of simple structure, stable work and the like.

In the sponge strip feeding and placing equipment, the base is connected with the corresponding cross beam in a front-back sliding mode, so that the base slides stably, and the running accuracy and stability of the equipment are improved.

In the sponge strip feeding and placing equipment, the rack II is horizontally fixed on the cross beam, and the length of the rack II extends forwards and backwards; the second driving component comprises a second motor fixed on the base, a second gear is fixed on a main shaft of the second motor, and the second gear is meshed with a corresponding second rack.

In the sponge strip feeding and placing equipment, the material grabbing mechanism comprises a longitudinal beam which is horizontally arranged and a row of pin-shaped tools which are arranged below the longitudinal beam and distributed along the length direction of the longitudinal beam, the rotating mechanism is connected with the longitudinal beam, the pin-shaped tools comprise bottom plates which are horizontally arranged, support plates are horizontally arranged between the two bottom plates at the head and the tail and the longitudinal beam, and the two bottom plates at the head and the tail are respectively arranged on the two support plates; the support plate is in sliding connection with the longitudinal beam so that the support plate can slide along the length direction of the longitudinal beam, and two driving mechanisms for respectively driving the two support plates to reciprocate are fixed on the longitudinal beam.

The distance between the two needle type tools at the head and the tail is adjusted by driving the supporting plate to slide by the driving mechanism so as to adapt the sponge strips with different lengths, realize stable grabbing of the sponge strips with different lengths, and have the advantages of high applicability, good practicability and the like.

In the sponge strip feeding and placing equipment, in the same grabbing mechanism, the two bottom plates at the head part and the tail part are respectively connected with the two supporting plates in a vertical sliding mode through the connecting structure and are limited by the sliding distance, the rest bottom plates are also connected with the longitudinal beam in a vertical sliding mode through the connecting structure and are limited by the sliding distance, each needle type tool can stretch and float to adapt to the corrugation fluctuation of the sponge strips, the needles on each needle type tool can penetrate into the sponge strips, and the sponge strips are grabbed more stably.

In the sponge strip feeding and placing device, the connecting structure comprises a guide structure and a limiting structure, wherein the guide structure enables the bottom plate and the supporting plate or the longitudinal beam to form up-down sliding connection, and the limiting structure is used for limiting the sliding distance of the bottom plate. The connecting structure is split into the guiding structure and the limiting structure, so that the design and the assembly are convenient.

In the sponge strip feeding and placing equipment, the driving mechanism comprises a horizontally arranged screw rod and a driving motor fixed on the longitudinal beam, the axial direction of the screw rod is parallel to the length direction of the longitudinal beam, one end of the screw rod is rotatably supported on the longitudinal beam, the other end of the screw rod is connected with the driving motor, a nut is mounted on the screw rod, and the nut is fixedly connected with a corresponding supporting plate through a bracket. The driving motor drives the supporting plate to move through the screw nut transmission mechanism, and has the advantages of simple structure, stable work and the like.

Naturally, the driving mechanism can also be an air cylinder, and the piston rod of the air cylinder is fixedly connected with the corresponding supporting plate through the connecting frame.

In the sponge strip feeding and placing equipment, the guide structure comprises a guide rod, and guide holes which vertically penetrate through and are matched with the guide rod are formed in the support plate and the longitudinal beam; at least one guide rod is vertically fixed on each bottom plate, the guide holes are the same in number and correspond to the guide rods in position one by one, and the upper end of each guide rod penetrates through the corresponding guide hole. By adopting the design, the device has the advantages of simple structure, convenient installation and the like.

In the sponge strip feeding and placing device, the limiting structure comprises an annular limiting part sleeved and fixed at the upper end of the guide rod and a spring sleeved at the lower end of the guide rod, the lower end of the spring acts on the bottom plate, the upper end of the spring acts on the supporting plate or the longitudinal beam, and the outer diameter of the annular limiting part is larger than the aperture of the guide hole. The annular limiting part and the spring are respectively used for limiting the downward moving distance and the upward moving distance of the bottom plate, and have the advantages of simple structure, stable work and the like.

Simultaneously, the spring plays the cushioning effect, makes the bottom plate steadily press and snatchs on the sponge strip, further strengthens snatching the effect.

In the sponge strip feeding and placing device, the annular limiting piece comprises a pressing cap which is in threaded connection with the guide rod.

In the sponge strip feeding and placing device, the upper end of each guide rod is also sleeved with the gasket and the buffer pad, the bottom surface of the buffer pad is pressed on the longitudinal beam or the supporting plate, the top surface of the buffer pad is pressed on the bottom surface of the gasket, and the pressing cap can be pressed on the top surface of the gasket. And a buffer cushion and a gasket are arranged between the press cap and the longitudinal beam or the supporting plate, so that the buffer effect is achieved, and the collision noise is reduced.

Compared with the prior art, the sponge strip feeding and placing device has the following advantages:

1. Under the first drive assembly, rotary mechanism and manipulator a common cooperation, realize grabbing material mechanism translation and horizontal swing in vertical direction in six directions of preceding, back, left and right, upper and lower, just so need set up about two buffering stations that set up side by side alright satisfy sponge strip rectangle and arrange to greatly reduced space occupies.

2. The distance between the two needle type tools at the head and the tail is adjusted by driving the supporting plate to slide by the driving mechanism so as to adapt the sponge strips with different lengths, realize stable grabbing of the sponge strips with different lengths, and have the advantages of high applicability, good practicability and the like.

Drawings

Fig. 1 is a use state diagram of the sponge strip feeding and placing device.

Fig. 2 is a schematic structural view of sponge strip feeding and placing equipment.

Fig. 3 is a schematic diagram of the connection of the vertical beam to the grabbing mechanism.

Fig. 4 is a schematic structural view of the material grabbing structure.

Fig. 5 is a schematic diagram of the connection of the stringer, the support plate and the pin fixture.

In the figure, 1, a rack; 2. a cross beam; 3. a vertical beam; 4. a first rack; 5. a first motor; 6. a second rack; 7. a second motor; 8. a third motor; 9. a third rack; 10. a slewing bearing; 11. a rotating electric machine; 12. a longitudinal beam; 13. a needle type tool; 13a, a bottom plate; 14. a support plate; 15. a screw rod; 16. a driving motor; 17. a nut; 18. a bracket; 19. a guide rod; 20. a spring; 21. an annular limiting member; 22. a gasket; 23. a cushion pad; 24. and a second manipulator.

Detailed Description

The following are specific embodiments of the present utility model and the technical solutions of the present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to these embodiments.

Example 1

As shown in fig. 1, the sponge strip feeding and placing device comprises a frame 1 and two mechanical arms which are arranged side by side left and right.

In particular the number of the elements,

As shown in fig. 1 to 3, the first manipulator comprises a cross beam 2 and a vertical beam 3 arranged on one side of the cross beam 2, wherein a frame 1 is provided with two first driving components for respectively driving the two cross beams 2 to horizontally move left and right; the two cross beams 2 are respectively provided with a base and a second driving component for driving the base to translate forwards and backwards; and lifting components for driving the corresponding vertical beams 3 to lift are arranged on each base. As shown in fig. 1, a material grabbing mechanism for grabbing sponge strips is arranged below each vertical beam 3, and a rotating mechanism for driving the corresponding material grabbing mechanism to swing back and forth at two positions of 0 degrees and 90 degrees around the central axis of the vertical beam 3 is arranged on each vertical beam 3.

Under the first drive assembly, rotary mechanism and manipulator a common cooperation, realize grabbing material mechanism translation and horizontal swing in vertical direction in six directions of preceding, back, left and right, upper and lower, just so need set up about two buffering stations that set up side by side alright satisfy sponge strip rectangle and arrange to greatly reduced space occupies.

In the present embodiment of the present invention, in the present embodiment,

Both ends of each beam 2 are in sliding connection with the frame 1 left and right, so that the beams 2 slide stably, and the running accuracy and stability of the equipment are improved. In actual products, two ends of the cross beam 2 are slidably connected with the frame 1 through guide rail slider mechanisms, wherein the guide rail slider mechanisms are in the prior art and are not described in detail herein. Naturally, both ends of the beam 2 can also be connected with the frame 1 in a sliding way through a sliding groove guide block structure.

As shown in fig. 3, the structure of the first driving assembly is specifically as follows: the rack 1 is horizontally fixed with two racks one 4, the length of the racks one 4 extends left and right, and the racks one 4 are arranged in parallel front and back. The first driving assembly comprises two first motors 5 which are respectively fixed at two ends of the cross beam 2, a first gear is fixed on a main shaft of each first motor 5, and the first gear is meshed with a corresponding first rack 4. The transverse beam 2 realizes left-right translation by utilizing the matching of the motor I5, the gear I and the rack I4, can greatly enlarge the distance between the two grabbing mechanisms so as to adapt to mattresses with more sizes, and has the advantages of stable work, convenient operation and the like.

The base is connected with the corresponding cross beam 2 in a front-back sliding way, so that the base can slide stably, and the running precision and stability of the equipment are improved. In actual products, the base is also in sliding connection with the cross beam 2 through the guide rail and slide block mechanism, and naturally, the base can also be in sliding connection with the cross beam 2 through the chute guide block mechanism.

The specific structure of the second driving component is as follows: a second rack 6 is horizontally fixed on the cross beam 2, and the length of the second rack 6 extends forwards and backwards; the second driving component comprises a second motor 7 fixed on the base, a second gear is fixed on a main shaft of the second motor 7, and the second gear is meshed with the corresponding second rack 6.

The lifting assembly has the following structure: the vertical beam 3 is connected with the base in an up-down sliding mode through a guide rail sliding block structure, the lifting assembly comprises a motor III 8 fixed on the base and a rack III 9 vertically fixed on the vertical beam 3, a gear III is fixed on a main shaft of the motor III 8, and the gear III is meshed with the corresponding rack III 9.

As shown in fig. 2 and 3, the specific structure of the rotating mechanism is as follows: comprising a slewing bearing 10 and a rotating electric machine 11 fixed on the vertical beam 3. The slewing bearing 10 is an existing product, and comprises an inner ring and an outer ring, wherein the outer ring is an outer ring gear. The grabbing mechanism is arranged on the corresponding inner ring, and a driving gear meshed with the outer ring is fixed on the main shaft of the rotating motor 11.

As shown in fig. 3 to 5, the material grabbing mechanism is specifically as follows: the device comprises a horizontal longitudinal beam 12 and a row of pin-shaped tools 13 which are arranged below the longitudinal beam 12 and distributed along the length direction of the longitudinal beam 12, wherein the longitudinal beam 12 is fixedly connected with the inner ring of a slewing bearing 10; when the grabbing mechanism swings to the 0-degree position, the length of the longitudinal beam 12 extends forwards and backwards; when the grabbing mechanism swings to a 90-degree position, the length of the longitudinal beam 12 extends left and right; the pin fixture 13 is an existing product, the structure of which specifically refers to a pin fixture and an assembly thereof (application number: 202222092587.6) disclosed in the chinese patent library, and the pin fixture 13 includes a bottom plate 13a horizontally arranged.

In particular the number of the elements,

A support plate 14 is horizontally provided between the two bottom plates 13a at the head and the tail and the side members 12, and the two bottom plates 13a at the head and the tail are respectively provided on the two support plates 14. The support plates 14 are slidably connected with the longitudinal beams 12 so that the support plates 14 can slide along the length direction of the longitudinal beams 12, and two driving mechanisms for respectively driving the two support plates 14 to reciprocate and translate are fixed on the longitudinal beams 12. The supporting plate 14 is driven by the driving mechanism to slide to adjust the distance between the head and the tail of the two-pin tool 13 so as to adapt to sponge strips with different lengths, so that the sponge strips with different lengths can be stably grabbed, and the two-pin tool has the advantages of high applicability, good practicability and the like.

Further, in the same grabbing mechanism, the two bottom plates 13a at the head and the tail are respectively connected with the two supporting plates 14 in a vertical sliding mode through a connecting structure and are limited by sliding distances, the remaining bottom plates 13a are also connected with the longitudinal beams 12 in a vertical sliding mode through a connecting structure and are limited by sliding distances, each needle tool 13 can stretch and float to adapt to the corrugation fluctuation of the sponge strip, the needles on each needle tool 13 can penetrate into the sponge strip, and the grabbing of the sponge strip is more stable. The preferred connection structure includes a guide structure for making the bottom plate 13a and the support plate 14 or the side member 12 to be slidably connected up and down and a limit structure for defining a sliding distance of the bottom plate 13 a. The connecting structure is split into the guiding structure and the limiting structure, so that the design and the assembly are convenient.

In the present embodiment of the present invention, in the present embodiment,

The support plate 14 is also slidably connected to the side member 12 by a rail-slider mechanism, and naturally, it is also possible that the support plate 14 is slidably connected to the side member 12 by a chute-guide structure.

As shown in fig. 4 and 5, the driving mechanism comprises a horizontally arranged screw rod 15 and a driving motor 16 fixed on the longitudinal beam 12, the axial direction of the screw rod 15 is parallel to the length direction of the longitudinal beam 12, one end of the screw rod 15 is rotatably supported on the longitudinal beam 12, the other end of the screw rod 15 is connected with the driving motor 16, a nut 17 is mounted on the screw rod 15, and the nut 17 is fixedly connected with a corresponding supporting plate 14 through a bracket 18. The driving motor 16 drives the supporting plate 14 to move through a screw rod 15 and nut 17 transmission mechanism, and has the advantages of simple structure, stable work and the like. The threaded spindle 15 is rotatably supported on the longitudinal beam 12 by means of a bearing block with bearings.

The guiding structure is specifically as follows: the guide rod 19 is included, and guide holes which vertically penetrate through and are matched with the guide rod 19 are formed in the supporting plate 14 and the longitudinal beam 12; at least one guide rod 19 is vertically fixed on each bottom plate 13a, the guide rods 19 and the guide holes are the same in number and correspond to each other in position one by one, and the upper end of each guide rod 19 passes through the corresponding guide hole to be arranged. By adopting the design, the device has the advantages of simple structure, convenient installation and the like. In actual products, two guide rods 19 are fixed on each bottom plate 13a, and the two guide rods 19 on the same bottom plate 13a are distributed along the length direction of the longitudinal beam 12.

The limiting structure is specifically as follows: as shown in fig. 5, the guide rod assembly comprises an annular limiting member sleeved and fixed at the upper end of the guide rod 19 and a spring 20 sleeved at the lower end of the guide rod 19, wherein the lower end of the spring 20 acts on the bottom plate 13a, the upper end of the spring 20 acts on the support or longitudinal beam 12, and the outer diameter of the annular limiting member is larger than the aperture of the guide hole. The annular limiting member 21 and the spring 20 are used for limiting the downward moving distance and the upward moving distance of the bottom plate 13a respectively, and have the advantages of simple structure, stable operation and the like.

Meanwhile, the spring 20 plays a buffering role, so that the bottom plate 13a is stably pressed on the sponge strip to grasp, and the grasping effect is further enhanced.

The annular limiting member 21 comprises a press cap screwed on the guide rod 19. Further, the upper end of each guide rod 19 is also sleeved with a washer 22 and a buffer pad 23, the bottom surface of the buffer pad 23 presses on the longitudinal beam 12 or the supporting plate 14, the top surface of the buffer pad 23 presses on the bottom surface of the washer 22, and the pressing cap can press on the top surface of the washer 22. A cushion pad 23 and a gasket 22 are arranged between the press cap and the longitudinal beam 12 or the supporting plate 14, so that the impact noise is reduced.

In an actual product, two opposite sides of the first manipulator are respectively provided with a second manipulator 24, and the structure of the second manipulator 24 is basically similar to that of the first manipulator, and the different places are that: the grabbing manipulator is directly arranged on the manipulator II 24, and in actual use, the manipulator II 24 is used for grabbing the sponge strip to the buffer station.

Example two

The structure and principle of the second embodiment are basically the same as those of the first embodiment, except that: the first driving component is a first two-cylinder, and piston rods of the first two-cylinder are fixedly connected with two ends of the cross beam 2 respectively.

Example III

The structure and principle of the third embodiment are basically the same as those of the first embodiment, except that: the second driving component is a second cylinder, and a piston rod of the second cylinder is fixedly connected with the base.

Example IV

The structure and principle of the fourth embodiment are basically the same as those of the first embodiment, except that: the rotating mechanism comprises a rotary cylinder, and the grabbing mechanism is arranged on a main shaft of the rotary cylinder.

Example five

The structure and principle of the fifth embodiment are basically the same as those of the first embodiment, except that: the driving mechanism is a cylinder, and a piston rod of the cylinder is fixedly connected with a corresponding supporting plate 14 through a connecting frame.

Example six

The structure and principle of the sixth embodiment are basically the same as those of the first embodiment, except that: the annular limiting piece 21 is an annular shoulder formed on the outer wall of the upper end of the guide rod 19.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.

Claims (10)

1. The sponge strip feeding and placing device comprises a frame (1) and two first manipulators which are arranged side by side left and right, wherein the first manipulators comprise a cross beam (2) and vertical beams (3) arranged on one side of the cross beam (2), bases are arranged on the two cross beams (2), lifting components for driving the corresponding vertical beams (3) to lift are arranged on the bases, and a grabbing mechanism for grabbing a sponge strip is arranged below each vertical beam (3); each beam (2) is provided with a second driving component for driving the corresponding base to translate back and forth; the vertical beam (3) is provided with a rotating mechanism for driving the corresponding grabbing mechanism to swing back and forth around the central axis of the vertical beam (3) at two positions of 0 degrees and 90 degrees.

2. The sponge strip feeding and placing device according to claim 1, wherein both ends of each cross beam (2) are connected with the frame (1) in a left-right sliding manner.

3. The sponge strip feeding and placing device according to claim 2, wherein two racks one (4) are horizontally fixed on the frame (1), and the two racks one (4) are arranged in parallel front and back; the first driving assembly comprises two first motors (5) which are respectively fixed at two ends of the cross beam (2), a first gear is fixed on a main shaft of each first motor (5), and the first gear is meshed with a corresponding first rack (4).

4. The sponge strip feeding and placing device as claimed in claim 1, wherein the rotating mechanism comprises a slewing bearing (10) and a rotating motor (11) fixed on the vertical beam (3), the slewing bearing (10) comprises an inner ring and an outer ring, the outer ring is of the type of an outer ring, the material grabbing mechanism is arranged on the corresponding inner ring, and a driving gear meshed with the outer ring is fixed on a main shaft of the rotating motor (11).

5. The sponge strip feeding and placing device as claimed in claim 4, wherein the material grabbing mechanism comprises a horizontally arranged longitudinal beam (12) and a row of pin-shaped tools (13) arranged below the longitudinal beam (12) and distributed along the length direction of the longitudinal beam (12), the rotating mechanism is connected with the longitudinal beam (12), the pin-shaped tools (13) comprise horizontally arranged bottom plates (13 a), support plates (14) are horizontally arranged between the two bottom plates (13 a) at the head and the tail and the longitudinal beam (12), and the two bottom plates (13 a) at the head and the tail are respectively arranged on the two support plates (14); the support plates (14) are slidably connected with the longitudinal beams (12) so that the support plates (14) can slide along the length direction of the longitudinal beams (12), and two driving mechanisms for driving the two support plates (14) to reciprocate and translate respectively are fixed on the longitudinal beams (12).

6. The sponge strip feeding and placing apparatus as claimed in claim 5, wherein in the same grabbing mechanism, the two bottom plates (13 a) at the head and the tail are respectively connected with the two support plates (14) in a sliding manner up and down through a connecting structure and are limited in sliding distance, and the rest of the bottom plates (13 a) are also connected with the longitudinal beams (12) in a sliding manner up and down through a connecting structure and are limited in sliding distance.

7. The sponge strip feeding placing apparatus as claimed in claim 6, wherein the connection structure comprises a guide structure for forming a vertical sliding connection between the bottom plate (13 a) and the support plate (14) or the longitudinal beam (12), and a limit structure for limiting the sliding distance of the bottom plate (13 a).

8. The sponge strip feeding and placing device according to claim 7, wherein the driving mechanism comprises a horizontally arranged screw rod (15) and a driving motor (16) fixed on the longitudinal beam (12), the axial direction of the screw rod (15) is parallel to the length direction of the longitudinal beam (12), one end of the screw rod (15) is rotatably supported on the longitudinal beam (12), the other end of the screw rod (15) is connected with the driving motor (16), a nut (17) is mounted on the screw rod (15), and the nut (17) is fixedly connected with the corresponding supporting plate (14) through a bracket (18).

9. The sponge strip feeding and placing device as claimed in claim 8, wherein the guiding structure comprises a guide rod (19), and the supporting plate (14) and the longitudinal beam (12) are provided with guide holes which vertically penetrate and are matched with the guide rod (19); at least one guide rod (19) is vertically fixed on each bottom plate (13 a), the guide holes are the same in number and correspond to the guide rods (19) in position one by one, and the upper end of each guide rod (19) penetrates through the corresponding guide hole.

10. The sponge strip feeding and placing device as claimed in claim 9, wherein the limiting structure comprises an annular limiting piece sleeved and fixed at the upper end of the guide rod (19) and a spring (20) sleeved at the lower end of the guide rod (19), the lower end of the spring (20) acts on the bottom plate (13 a), the upper end of the spring (20) acts on the supporting plate (14) or the longitudinal beam (12), and the outer diameter of the annular limiting piece is larger than the aperture of the guide hole.