Sponge clamping mechanism and sponge transferring device

By interlacing the pin assembly of the sponge clamping mechanism into the sponge, the problem of sponge being difficult to clamp is solved, achieving stable clamping and efficient movement, and adapting to the production needs of sponges of different sizes.

CN224061932UActive Publication Date: 2026-03-31TAISHAN HONGSHENG AUTOMATION MASCH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-18
Publication Date
2026-03-31

AI Technical Summary

Technical Problem

In existing technologies, sponges are difficult to move and gripped by clamps during the production process, especially thin sponge pads, resulting in low production efficiency.

Method used

A sponge clamping mechanism was designed, which uses a pin assembly to insert a first pin and a second pin into the sponge to form a stable clamp. The pin assembly includes a base, a guide hole, pins and a drive assembly, which can adapt to the fixing and movement of sponges of different sizes.

Benefits of technology

It achieves stable clamping of sponges, preventing them from falling, improving production efficiency, and can adapt to the clamping needs of sponges of different sizes.

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Abstract

The utility model provides a sponge clamping mechanism and a sponge transferring device. The sponge clamping mechanism comprises a plurality of contact pin assemblies and a plurality of clamping assemblies, the contact pin assembly comprises a base, a plurality of first contact pins, a plurality of second contact pins and a contact pin driving assembly; a plurality of first guide holes and a plurality of second guide holes are formed in the base, and the first guide holes and the second guide holes are arranged at intervals in the preset direction relative to the base; the plurality of first pins and the plurality of second pins are arranged at intervals along a preset direction. According to the sponge clamping mechanism, the sponge is fixed to the first contact pin and the second contact pin in the mode that the first contact pin and the second contact pin are inserted into the sponge material in a crossed mode, clamping is convenient, the sponge is not prone to falling off, and the crossed position of the first contact pin and the second contact pin is close to the surface of the top of the sponge material; the holes formed by the first contact pins and the second contact pins are arranged in a single direction, so that subsequent shielding or proper treatment is facilitated; in addition, the clamping device can be suitable for clamping sponge materials of different sizes.
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Description

Technical Field

[0001] This utility model relates to the field of sponge processing technology, specifically to a sponge clamping mechanism and a sponge transfer device. Background Technology

[0002] Commonly used sponges are made from wood cellulose fibers or foamed plastic polymers. In addition, there are three other types of synthetic sponges made from materials such as low-density polyether (non-absorbent sponge), polyvinyl alcohol (highly absorbent material with no obvious pores), and polyester.

[0003] Because sponges are soft and elastic, they are difficult to move using clamps during production, especially for sponge pads used in mattresses and sofa cushions, which are relatively thin and difficult to clamp, thus affecting production efficiency. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings and deficiencies in the existing technology and to provide a sponge clamping mechanism and a sponge transfer device.

[0005] One embodiment of this utility model provides a sponge clamping mechanism, including: a plurality of pin assemblies;

[0006] The pin assembly includes a base, a plurality of first pins, a plurality of second pins, and a pin drive assembly;

[0007] The base is provided with a plurality of first guide holes and a plurality of second guide holes, both of which are connected to the bottom of the base. The plurality of first guide holes and the plurality of second guide holes are arranged at intervals relative to the base along a preset direction.

[0008] A plurality of first pins and a plurality of second pins are arranged at intervals along the preset direction. The first pins and the second pins gradually extend towards each other in a downward direction. The pin driving assembly is driven and connected to the first pins and the second pins respectively. The first pins move along the extension direction of the first pins under the drive of the pin driving assembly and can extend from the first guide hole to the bottom of the base. The second pins move along the extension direction of the second pins under the drive of the pin driving assembly and can extend from the second guide hole to the bottom of the base.

[0009] In some alternative embodiments, the first guide hole forms a first opening at the bottom of the base, and the second guide hole forms a second opening at the bottom of the base;

[0010] In a direction perpendicular to the preset direction, the distance between the center of the first orifice and the circle of the second orifice is less than the sum of the radii of the first orifice and the radii of the second orifice.

[0011] In some alternative embodiments, a first slide and a second slide are slidably disposed on the base, the first pin is mounted on the first slide, the second pin is mounted on the second slide, and the pin driving assembly is drivenly connected to the first slide and the second slide respectively.

[0012] In some optional embodiments, the pin drive assembly includes a drive motor, a transmission gear set, a plurality of first driven gears, a plurality of second driven gears, a plurality of first racks, and a plurality of second racks. The drive motor is drivenly connected to the first driven gears and the second driven gears through the transmission gear set. The first racks are disposed on the first slide and mesh with the first driven gears, and the second racks are disposed on the second slide and mesh with the second driven gears.

[0013] In some alternative embodiments, the sponge clamping mechanism includes a bracket and a plurality of said pin assemblies, the plurality of said pin assemblies being divided into a plurality of first pin assemblies and a plurality of second pin assemblies, the first pin assemblies and the second pin assemblies being disposed on the bracket, the preset direction corresponding to the first pin assembly being not parallel to the preset direction corresponding to the second pin assembly.

[0014] In some alternative implementations, the plurality of pin assemblies are divided into a plurality of first pin assemblies and a plurality of second pin assemblies, with the plurality of second pin assemblies evenly distributed on both sides of the first pin assemblies.

[0015] In some alternative embodiments, the sponge clamping mechanism includes a bracket, a position adjustment component, and a plurality of said pin components. The plurality of pin components are divided into a plurality of second pin components and a plurality of third pin components. The second pin components are disposed on the bracket, and the third pin components are movably mounted on the bracket. The position adjustment component is drivenly connected to the third pin components, and the third pin components move closer to or further away from the second pin components under the drive of the position adjustment component.

[0016] In some alternative implementations, the plurality of pin assemblies are divided into a plurality of second pin assemblies and a plurality of third pin assemblies, the plurality of third pin assemblies being arranged around the second pin assemblies.

[0017] In some alternative embodiments, the sponge clamping mechanism includes a support and a height adjustment assembly, wherein the base is mounted on the support via the height adjustment assembly and is movable relative to the support via the height adjustment assembly.

[0018] Another embodiment of this utility model provides a sponge transfer device, including: a sponge clamping mechanism as described above.

[0019] Compared to existing technologies, the sponge clamping mechanism of this utility model fixes the sponge to the first and second pins by inserting the first and second pins crosswise into the sponge material. This makes clamping convenient and prevents the sponge from falling off. Furthermore, the intersection of the first and second pins is close to the top surface of the sponge material, so that the holes formed by the first and second pins are arranged in a single direction, which facilitates subsequent covering or appropriate processing. In addition, it can also accommodate sponge materials of different sizes.

[0020] To provide a clearer understanding of this invention, the specific embodiments of this invention will be described below in conjunction with the accompanying drawings. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a sponge clamping mechanism according to an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the pin assembly of one embodiment of the present invention when the base is partially concealed;

[0023] Figure 3 This is a cross-sectional view of a pin assembly according to an embodiment of the present invention;

[0024] Figure 4 This is a cross-sectional view of the first and second pins of an embodiment of the present invention without penetrating the sponge pad;

[0025] Figure 5 This is a cross-sectional view of the first and second pins of one embodiment of the present invention when they penetrate the sponge pad;

[0026] Figure 6 This is a schematic diagram of the bottom structure of a pin assembly according to an embodiment of the present invention;

[0027] Figure 7 This is a schematic diagram of the structure of a sponge clamping mechanism according to another embodiment of the present invention;

[0028] Figure 8 This is a schematic diagram of the bottom structure of the sponge clamping mechanism according to another embodiment of the present invention.

[0029] Explanation of reference numerals in the attached figures:

[0030] 10. Pin assembly; 11. Base; 111. First guide hole; 112. Second guide hole; 113. First opening; 114. Second opening; 115. First slide; 116. Second slide; 12. First pin; 13. Second pin; 14. Pin drive assembly; 141. Drive motor; 142. Transmission gear set; 143. First driven gear; 144. Second driven gear; 145. First rack; 146. Second rack; 10a. First pin assembly; 10b. Second pin assembly; 10c. Third pin assembly; 20. Bracket; 30. Position adjustment assembly; 40. Height adjustment assembly. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model. In the description of the present utility model, unless otherwise stated, "a plurality of" means two or more, and "a number" means one or more. In addition, unless otherwise stated, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features.

[0032] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] In the description of this utility model, references to terms such as "one embodiment," "some alternative implementations," or "some optional embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0035] Please see Figures 1 to 3 One embodiment of this utility model provides a sponge clamping mechanism, including: a plurality of pin assemblies 10.

[0036] The pin assembly 10 includes a base 11, a plurality of first pins 12, a plurality of second pins 13, and a pin drive assembly 14;

[0037] The base 11 is provided with a plurality of first guide holes 111 and a plurality of second guide holes 112. The first guide holes 111 and the second guide holes 112 are both connected to the bottom of the base 11. The plurality of first guide holes 111 and the plurality of second guide holes 112 are arranged at intervals relative to the base 11 along a preset direction.

[0038] Multiple first pins 12 and multiple second pins 13 are arranged at intervals along a predetermined direction. The first pins 12 and second pins 13 gradually extend towards each other from top to bottom. A pin driving assembly 14 is driven and connected to the first pins 12 and second pins 13 respectively. The first pins 12 move along their extension direction under the drive of the pin driving assembly 14 and can extend from the first guide hole 111 to the bottom of the base 11. The second pins 13 move along their extension direction under the drive of the pin driving assembly 14 and can extend from the second guide hole 112 to the bottom of the base 11. The first guide hole 111 guides the movement of the first pins 12, and the second guide hole 112 guides the movement of the second pins 13.

[0039] In this embodiment, the clamping of a sponge pad by a sponge clamping mechanism is used as an example for explanation. Of course, the sponge clamping mechanism is not limited to clamping sponge materials; it can also clamp flexible materials similar to sponges.

[0040] After the base 11 is positioned above the sponge pad, the pin drive assembly 14 drives the first pin 12 and the second pin 13 to extend downwards from the base 11. Since the first pin 12 and the second pin 13 are both arranged at an angle, when the pin drive assembly 14 drives the first pin 12 and the second pin 13 to extend below the base, the first pin 12 and the second pin 13 are inserted into the sponge pad in an alternating manner. The weight of the sponge pad will cause the sponge to press against the first pin 12 and the second pin 13. If the sponge has a tendency to slide downwards along the first pin 12, it will be blocked by the second pin 13 and unable to move. Similarly, if the sponge has a tendency to slide downwards along the second pin 13, it will be blocked by the first pin 12 and unable to move. Therefore, the sponge pad can be fixed below the base 11, achieving a stable clamping of the sponge pad. Please refer to [link to relevant documentation]. Figure 4 and Figure 5 It should be noted that the first pin 12 and the second pin 13 can be inserted into the sponge pad without penetrating it, or the first pin 12 and the second pin 13 can also pierce the sponge pad, that is, the first pin 12 and the second pin 13 can penetrate from the top of the sponge pad to the bottom of the sponge pad. The specific adjustment is made according to different structures or types of sponges and specific production needs, so as to meet the needs of fixing the sponge pad.

[0041] Please see Figure 6 In some optional embodiments, the first guide hole 111 has a first opening 113 formed at the bottom of the base 11, and the second guide hole 112 has a second opening 114 formed at the bottom of the base 11.

[0042] In a direction perpendicular to the preset direction, the distance between the center of the first hole 113 and the circle of the second hole 114 is less than the sum of the radii of the first hole 113 and the second hole 114. When the first pin 12 and the second pin 13 pierce the top of the sponge pad, a perforation will be left on the top of the sponge pad. Since the first hole 113 of the first guide hole 111 and the second hole 114 of the second guide hole 112 are close to each other, the perforations formed by the first pin 12 and the second pin 13 on the sponge pad are also close to each other. This allows the perforations formed by the same pin assembly 10 on the sponge pad to be roughly in a straight line, which is convenient for concealment and avoids affecting the appearance of the sponge pad. Especially when the sponge clamping mechanism includes multiple pin assemblies 10, it avoids the formation of perforations at various positions on the sponge pad that are difficult to conceal.

[0043] To facilitate the installation of the first pin 12 and the second pin 13, and to enable the synchronous movement of the multiple first pins 12 and the multiple second pins 13, in some optional embodiments, a first slide block 115 and a second slide block 116 are slidably disposed on the base 11. The first pin 12 is mounted on the first slide block 115, and the second pin 13 is mounted on the second slide block 116. The pin drive assembly 14 is driven to the first slide block 115 and the second slide block 116 respectively. The pin drive assembly drives the first slide block 115 to move, thereby causing the multiple first pins 12 on the first slide block 115 to move. The pin drive assembly drives the second slide block 116 to move, thereby causing the multiple second pins 13 on the second slide block 116 to move.

[0044] The specific structure of the pin drive assembly 14 can be selected according to actual needs. For example, in some optional embodiments, the pin drive assembly 14 includes a drive motor 141, a transmission gear set 142, a plurality of first driven gears 143, a plurality of second driven gears 144, a plurality of first racks 145, and a plurality of second racks 146. The drive motor 141 is drivenly connected to the first driven gears 143 and second driven gears 144 through the transmission gear set 142. The first racks 145 are disposed on the first slide 115 and mesh with the first driven gears 143. The second racks 146 are disposed on the first slide 115 and mesh with the first driven gears 143. The second slide 116 is mounted on the second slide block and meshes with the second driven gear 144. The drive motor 141 drives the first driven gear 143 and the second driven gear 144 to rotate through the transmission gear set 142. The first driven gear 143 drives the first rack 145 to move, thereby driving the first slide block 115 to move, thus enabling the first pin 12 to extend from the bottom of the base 11 or retract to the first guide hole 111. The second driven gear 144 drives the second rack 146 to move, thereby driving the second slide block 116 to move, thus enabling the second pin 13 to extend from the bottom of the base 11 or retract to the second guide hole 112. It should be noted that the lengths of the first pin 12 and the second pin 13 extending from the bottom of the base 11 can be adjusted by controlling the pin drive assembly 14, so that the first pin 12 and the second pin 13 can extend from the bottom of the base 11 to different lengths as needed, thereby meeting the clamping requirements. In this embodiment, the drive motor 141 drives the first driven gear 143 and the second driven gear 144 to rotate through the transmission gear set 142, thereby driving the first rack 145 and the second rack 146 to move a specified distance, so that the first pin 12 and the second pin 13 extend from the bottom of the base 11 to a specified length. For example, the first pin 12 and the second pin 13 can extend from the bottom of the base 11 to different lengths such as 20mm, 30mm or 40mm, etc., and this example is not limited to this one.

[0045] Of course, the pin drive assembly 14 can also adopt other suitable structures. For example, the pin drive assembly 14 can also adopt multiple cylinders, multiple hydraulic cylinders or multiple electric cylinders. For example, two cylinders are respectively driven to connect to the first slide 115 and the second slide 116. The cylinders drive the first slide 115 and the second slide 116 to move, thereby driving the first pin 12 and the second pin 13 to move.

[0046] Please see Figure 7 and Figure 8 In some optional embodiments, the sponge clamping mechanism includes a bracket 20 and a plurality of pin assemblies 10. The plurality of pin assemblies 10 are divided into a plurality of first pin assemblies 10a and a plurality of second pin assemblies 10b. The first pin assemblies 10a and the second pin assemblies 10b are disposed on the bracket 20. The first pin 12 and the second pin 13 of the first pin assembly 10a have different tilt angles, and the first pin 12 and the second pin 13 of the second pin assembly 10b have different tilt angles. Since the preset direction corresponding to the first pin assembly 10a is not parallel to the preset direction corresponding to the second pin assembly 10b, the first pin 12 of the first pin assembly 10a, the second pin 13 of the first pin assembly 10a, the first pin 12 of the second pin assembly 10b, and the second pin 13 of the second pin assembly 10b all have different tilt angles, so that the sponge clamping mechanism has pins with four tilt angles, thereby increasing the difficulty of the sponge pad falling off.

[0047] In some optional embodiments, the plurality of pin assemblies 10 are divided into several first pin assemblies 10a and several second pin assemblies 10b. The several second pin assemblies 10b are evenly distributed on both sides of the first pin assembly 10a. The support force of the first pin 12 and the second pin 13 of the first pin assembly 10a on the sponge pad is in a different direction from that of the first pin 12 and the second pin 13 of the second pin assembly 10b on the sponge pad. When the first pin assembly 10a is placed in the middle of the second pin assembly 10b, the second pin assembly 10b can restrain the sponge pad from falling relative to the first pin assembly 10a, and the first pin assembly 10a can restrain the sponge pad from falling relative to the second pin assembly 10b. This helps to improve the stability of the sponge pad clamping and further prevents the sponge pad from falling.

[0048] In some alternative embodiments, the sponge clamping mechanism includes a position adjustment component 30 and a plurality of pin components 10. The plurality of pin components 10 are divided into a plurality of second pin components 10b and a plurality of third pin components 10c. The second pin components 10b are disposed on the bracket 20, and the third pin components 10c are movably mounted on the bracket 20. The position adjustment component 30 is drivenly connected to the third pin components 10c. Under the drive of the position adjustment component 30, the third pin components 10c move closer to or further away from the second pin components 10b, thereby enabling them to stably clamp sponge pads of different sizes.

[0049] In some alternative embodiments, the plurality of pin assemblies 10 are divided into a plurality of second pin assemblies 10b and a plurality of third pin assemblies 10c, with the third pin assemblies 10c arranged around the second pin assembly 10b. The second pin assembly 10b, located in the middle, can be fixed relative to the bracket 20 and is used to clamp the middle position of the sponge pad, while the third pin assemblies 10c are used to clamp the position of the sponge pad near the edge. The position of the third pin assembly 10c is adjusted according to the size of the sponge pad, thereby better and more stably clamping sponge pads of different sizes. In this embodiment, the plurality of pin assemblies 10 are divided into one first pin assembly 10a, four second pin assemblies 10b, and four third pin assemblies 10c.

[0050] The specific structure of the position adjustment component 30 can be selected according to actual needs. For example, the position adjustment component 30 can be a lead screw drive component, a rotary motor translation drive component, a belt translation drive component, a cylinder translation drive component, or a linear motor translation drive component. In this embodiment, the position adjustment component 30 includes several linear motors and several sliding blocks. The sliding blocks are slidably disposed on the bracket 20 and connected to the base 11 of the third pin assembly 10c. The linear motors are driven by the sliding blocks. The linear motors drive the third pin assembly 10c to move by moving the sliding blocks relative to the bracket 20. This example is not limited to this one.

[0051] In some alternative embodiments, the sponge clamping mechanism includes a height adjustment component 40. The base 11 is mounted on the bracket 20 via the height adjustment component 40. The base 11 can be raised and lowered relative to the bracket 20 via the height adjustment component 40, thereby adjusting the height position of the base 11 relative to the bracket 20 according to actual needs, so as to adapt to sponge pads of different thicknesses.

[0052] The specific structure of the height adjustment component 40 can be selected according to actual needs. For example, the height adjustment component 40 can be a lead screw drive component, a rotary motor translation drive component, a belt translation drive component, a cylinder translation drive component, or a linear motor translation drive component. In some optional embodiments, the height adjustment component 40 includes a movable sleeve and a lifting rod passing through the movable sleeve. The movable sleeve is mounted on the bracket 20, and the lifting rod is connected to the base 11. A pin or threaded part can be provided on the movable sleeve to tighten or loosen the lifting rod, so that the lifting rod can be positioned in a suitable position. In this embodiment, the position adjustment component 30 also includes several movable frames, and a sliding block is mounted on the movable frame. Multiple third pin assemblies 10c can be mounted on the same movable frame, and the movable sleeve of the height adjustment component 40 connected to the third pin assembly 10c can be mounted on the movable frame.

[0053] The aforementioned sponge clamping mechanism can be applied to a sponge transfer device, which includes the sponge clamping mechanism described above. The sponge transfer device may further include a multi-axis translation drive assembly or a robotic arm assembly. The multi-axis translation drive assembly is connected to the pin assembly 10 or the bracket 20, and is used to drive the sponge clamping mechanism to translate, so that after the sponge clamping mechanism clamps the sponge pad, the multi-axis translation drive assembly drives the sponge clamping mechanism to move to a suitable position to facilitate the movement of the sponge pad. The multi-axis translation drive assembly can be a two-axis translation drive assembly or a three-axis translation drive assembly; its structure is well-known to those skilled in the art and will not be described in detail here.

[0054] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sponge clamping mechanism, characterized in that, include: Several pin assemblies; The pin assembly includes a base, a plurality of first pins, a plurality of second pins, and a pin drive assembly; The base is provided with a plurality of first guide holes and a plurality of second guide holes, both of which are connected to the bottom of the base. The plurality of first guide holes and the plurality of second guide holes are arranged at intervals relative to the base along a preset direction. A plurality of first pins and a plurality of second pins are arranged at intervals along the preset direction. The first pins and the second pins gradually extend towards each other in a downward direction. The pin driving assembly is driven and connected to the first pins and the second pins respectively. The first pins move along the extension direction of the first pins under the drive of the pin driving assembly and can extend from the first guide hole to the bottom of the base. The second pins move along the extension direction of the second pins under the drive of the pin driving assembly and can extend from the second guide hole to the bottom of the base.

2. A sponge holding mechanism according to claim 1, wherein: The first guide hole forms a first opening at the bottom of the base, and the second guide hole forms a second opening at the bottom of the base; In a direction perpendicular to the preset direction, the distance between the center of the first orifice and the circle of the second orifice is less than the sum of the radii of the first orifice and the radii of the second orifice.

3. A sponge holding mechanism according to claim 1, wherein: The base is slidably provided with a first slide block and a second slide block, the first pin is mounted on the first slide block, the second pin is mounted on the second slide block, and the pin driving assembly is drivenly connected to the first slide block and the second slide block respectively.

4. A sponge holding mechanism according to claim 3, wherein: The pin drive assembly includes a drive motor, a transmission gear set, a plurality of first driven gears, a plurality of second driven gears, a plurality of first racks, and a plurality of second racks. The drive motor is driven and connected to the first driven gears and the second driven gears through the transmission gear set. The first racks are disposed on the first slide and mesh with the first driven gears. The second racks are disposed on the second slide and mesh with the second driven gears.

5. A sponge holding mechanism according to any one of claims 1 to 4, wherein The device includes a bracket and a plurality of said pin assemblies. The plurality of said pin assemblies are divided into a plurality of first pin assemblies and a plurality of second pin assemblies. The first pin assemblies and the second pin assemblies are disposed on the bracket. The preset direction corresponding to the first pin assembly is not parallel to the preset direction corresponding to the second pin assembly.

6. A sponge holding mechanism according to claim 5, wherein: The plurality of pin assemblies are divided into several first pin assemblies and several second pin assemblies, with the several second pin assemblies evenly distributed on both sides of the first pin assemblies.

7. A sponge holding mechanism according to any one of claims 1 to 4, wherein The device includes a bracket, a position adjustment component, and a plurality of said pin components. The plurality of said pin components are divided into several second pin components and several third pin components. The second pin components are disposed on the bracket, and the third pin components are movably mounted on the bracket. The position adjustment component is driven to be connected to the third pin components, and the third pin components move closer to or further away from the second pin components under the drive of the position adjustment component.

8. A sponge holding mechanism according to claim 7, wherein: The plurality of the pin assemblies are divided into a plurality of the second pin assemblies and a plurality of the third pin assemblies, and the plurality of the third pin assemblies are arranged around the second pin assemblies.

9. A sponge holding mechanism according to any one of claims 1 to 4, wherein The base is mounted on the support by a height adjustment assembly, and the base can be lifted relative to the support by the height adjustment assembly.

10. A sponge transfer device, characterized by, Comprising: A sponge clamping mechanism as claimed in any one of claims 1 to 9.