Grabbing device for kerb production

Abstract

The utility model discloses a gripping device for curb production. The gripping device comprises a moving frame, a driving device and a driving device, the negative-pressure shell is arranged below the movable frame, and adsorption holes communicated with an inner cavity of the negative-pressure shell are densely distributed in the bottom surface and used for being communicated with a negative-pressure pump; the supporting arms are provided with supporting parts, the supporting arms are distributed in the circumferential direction and move between the supporting station and the releasing station and below the supporting station, the supporting parts are located under the negative pressure shell so as to support the curb blank, and the positions, below the releasing station and between the supporting arms, of one side of the curb blank adsorbed by the negative pressure shell are located; the driving assembly is used for driving the supporting arm to move. According to the grabbing device for curb production, negative pressure is generated at the negative pressure shell and the adsorption holes through the negative pressure pump, after a curb blank is adsorbed, the driving assembly is used for adjusting the supporting arm to the supporting station, the supporting arm is used for supporting the curb blank, the curb blank can still move along with the device conveniently after the negative pressure pump stops running, and the working efficiency is improved. And the continuous operation state of the negative pressure pump does not need to be kept, so that the transportation energy consumption is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of curbstone production, in particular to a grabbing device for curbstone production. Background Art

[0002] Curbstones are marker stones set between the road surface and other structures. They are mainly used to separate different road functional areas, ensure driving safety and beautify the urban environment.

[0003] During the production process of curbstones, after the curbstone blanks are obtained, a gripping device is required to transfer the blanks to other places for subsequent processing. In order to avoid contact between the mechanical claws and the surface of the blanks, scratches are formed on the surface of the blanks, and damage to the blanks, in the prior art, such as the Chinese utility model patent with announcement number CN216661692U, a transfer device for imitation stone curbstone production equipment is disclosed. After the negative pressure plate contacts the blank, the negative pressure device is used to generate negative pressure inside the negative pressure plate and at the negative pressure hole to adsorb the blank, and then the negative pressure plate is driven to move by the translation assembly and the lifting assembly, thereby driving the blank to move, thereby realizing the transportation of the blank.

[0004] However, when the above-mentioned device grabs and transports the blank, the negative pressure device needs to keep running continuously to maintain sufficient negative pressure at the negative pressure hole, firmly adsorb the blank, and prevent the blank from falling and being damaged. Since the curb stone blank has a certain shape and density, the curb stone blank is heavy. Therefore, when transporting it over long distances, the negative pressure device needs to maintain a long-term operation state, resulting in high energy consumption of the entire transfer device.

[0005] Therefore, it is necessary to improve the grabbing device for curbstone production in the prior art. Utility Model Content

[0006] The utility model aims to overcome the defects in the prior art and provide an energy-saving grabbing device for curbstone production.

[0007] In order to achieve the above technical effects, the technical solution of the utility model is: a grabbing device for curbstone production, comprising:

[0008] a moving frame configured to be driven by a translation device;

[0009] A negative pressure shell, which is arranged below the moving frame, and whose bottom surface is densely covered with adsorption holes connected to its inner cavity, and is used to connect to a negative pressure pump to absorb the curbstone blank;

[0010] A support arm, wherein the support arm has a support portion, the support arm is distributed along the circumference of the negative pressure shell and is movably arranged between a support station and a release station, wherein at the support station, the support portion is located directly below the negative pressure shell to support the curbstone blank, and at the release station, the support arm is located on one side of the curbstone blank adsorbed by the negative pressure shell;

[0011] A driving assembly is used to drive the support arm to move.

[0012] Preferably, in order to reduce the movable space of the support arm and make the structure more compact, the support arm is rotated on the negative pressure shell and the rotation axis is parallel to the bottom surface of the negative pressure shell.

[0013] Preferably, in order to drive the support arm to rotate, a transmission assembly is arranged between the support arm and the driving assembly, and the transmission assembly includes a transmission cylinder, a transmission piston and a transmission connecting rod. The axial direction of the transmission cylinder and the axial direction of the transmission piston are parallel to the bottom surface of the negative pressure shell and perpendicular to the rotation axis of the support arm. The transmission cylinder is fixed on the negative pressure shell, one end of the transmission piston slides in the transmission cylinder along the axial direction of the transmission cylinder, and the other end is hinged to the support arm through a transmission connecting rod. The driving assembly includes a pressure regulating unit, and the pressure regulating unit is used to adjust the pressure in the transmission cylinder.

[0014] Preferably, in order to achieve pressure regulation in the transmission cylinder, the pressure regulating unit includes a pressure regulating cylinder, a pressure regulating piston and a reciprocating unit. The pressure regulating cylinder is fixed on the negative pressure shell and is connected to the transmission cylinder. One end of the pressure regulating piston slides in the pressure regulating cylinder along the axial direction of the pressure regulating cylinder. The reciprocating unit is connected to the other end of the pressure regulating piston to achieve the reciprocating end of the pressure regulating piston along its own axial direction.

[0015] Preferably, in order to simplify the device structure and make the device more compact, the pressure regulating cylinder is connected to the transmission cylinder in the transmission assembly corresponding to each support arm.

[0016] Preferably, in order to further simplify the device structure and ensure the compactness of the device structure, the pressure regulating cylinder extends in the vertical direction and is fixed between the transmission cylinders in the transmission assemblies corresponding to the support arms.

[0017] Preferably, in order to achieve smooth transportation of the curbstone blank, under the support station, the support part is horizontally arranged just below the negative pressure shell.

[0018] Preferably, in order to ensure that the support arm can move accurately to the support position, a positioning protrusion is provided on the circumferential outer edge of the negative pressure shell, and under the support position, the support arm abuts against the positioning protrusion.

[0019] Preferably, in order to ensure that the negative pressure shell and the negative pressure shell are tightly fitted when the negative pressure shell absorbs the curbstone blank, the movable frame and the negative pressure shell are connected by an elastic member.

[0020] Preferably, in order to facilitate the stable transportation of the curbstone blanks, the negative pressure shell is fixedly connected to a negative pressure pipe, and the negative pressure pipe includes a guide pipe extending in a vertical direction and connected to the negative pressure shell, and the guide pipe is slidably penetrated on the movable frame.

[0021] To sum up, compared with the prior art, the grabbing device for curbstone production of the utility model generates negative pressure at the negative pressure shell and the adsorption hole through the negative pressure pump, and after the curbstone blank is adsorbed, the support arm is adjusted to the support position by the driving assembly, and the curbstone blank is supported by the support arm, so that the curbstone blank can still be moved with the device after the negative pressure pump stops running, and there is no need to keep the negative pressure pump in continuous operation, thereby reducing the energy consumption of transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the utility model;

[0023] Figure 2 yes Figure 1 A schematic diagram of the structure from another perspective;

[0024] Figure 3 It is a structural schematic diagram of another use state of the utility model;

[0025] Figure 4 yes Figure 3 A schematic cross-sectional structure diagram of ;

[0026] Figure 5 yes Figure 4 A magnified view of part A;

[0027] Figure 6 yes Figure 3 A partial structural diagram of

[0028] Figure 7 yes Figure 6 Explosion diagram of

[0029] Figure 8 yes Figure 6 A partial structural diagram of

[0030] Fig. 9 yes Figure 8 Explosion diagram of

[0031] In the figure: 1, mobile frame; 2, negative pressure shell; 21, bottom plate; 211, adsorption hole; 22, shell; 221, positioning protrusion; 222, rotating seat; 23, bolt; 24, nut; 25, negative pressure pipe; 251, guide pipe; 252, longitudinal pipe; 253, transverse pipe; 26, elastic member; 27, rotating unit; 271, rotating shaft; 272, nut; 3, curbstone blank; 4, support arm; 41, support part; 42, connecting part; 5, driving group Parts; 51, pressure regulating unit; 511, pressure regulating cylinder; 5111, first sponge ring; 512, pressure regulating piston; 513, reciprocating unit; 514, driving motor; 515, active connecting rod; 516, driven connecting rod; 517, reciprocating rod; 518, motor seat; 52, pressure regulating shell; 6, transmission assembly; 61, transmission cylinder; 611, connecting pipe; 612, second sponge ring; 62, transmission piston; 63, transmission connecting rod; 631, connecting seat. DETAILED DESCRIPTION

[0032] The following is a further description of the specific implementation of the present invention in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0033] like Figure 1-Figure 9 As shown, the grabbing device for curbstone production of the utility model comprises:

[0034] A mobile frame 1, wherein the mobile frame 1 is configured to be driven by a translation device;

[0035] The negative pressure shell 2 is arranged below the mobile frame 1. The bottom surface of the negative pressure shell 2 is densely covered with adsorption holes 211 connected to its inner cavity. The negative pressure shell 2 is used to connect to the negative pressure pump to absorb the curbstone blank 3.

[0036] The support arm 4 has a support portion 41, and the support arm 4 is distributed along the circumference of the negative pressure shell 2 and is movably arranged between the support station and the release station. At the support station, the support portion 41 is located directly below the negative pressure shell 2 to support the curbstone blank 3. At the release station, the support arm 4 is located on one side of the curbstone blank 3 adsorbed by the negative pressure shell 2;

[0037] The driving assembly 5 is used to drive the supporting arm 4 to move.

[0038] The mobile frame 1 of the device is used to be connected to the output end of the translation device. The translation device includes but is not limited to a three-axis translation device, or a translation device formed by a translation component and a lifting component as disclosed in announcement number CN216661692U. The output end of the translation device is connected to the mobile frame 1, so that when the translation device is running, it can drive the mobile frame 1 to move, and then drive the negative pressure shell 2 below to move.

[0039] The specific use process of the device is as follows: first, the driving component 5 adjusts the support arm 4 to the release position, so that the support arm 4 is separated from the bottom surface of the negative pressure shell 2; then, the mobile frame 1 is driven to move by the translation device, and the negative pressure shell 2 is adjusted to the bottom surface to contact the top surface of the curb stone blank 3, and then the negative pressure pump is started to generate sufficient negative pressure at the adsorption hole 211, so that the curb stone blank 3 can be fixedly adsorbed on the bottom surface of the negative pressure shell 2; then, the mobile frame 1 is raised by the translation device, so that the curb stone blank 3 can be separated from the support surface of its initial position; then, the driving component 5 drives the support arm 4 to adjust to the supporting position, and the negative pressure pump stops running, so that the bottom surface of the curb stone blank 3 is in contact with the support part 41, and the curb stone blank 3 is supported by the support arm 4; then, the mobile frame 1 is driven to move by the translation device, thereby driving the negative pressure shell 2 and the curb stone blank 3 below to move.

[0040] Therefore, during the grabbing process, the device only needs to use negative pressure to attract the curb stone blank 3 in the initial stage, and the support arm 4 will support the curb stone blank 3 for the rest of the time. During the entire transportation process, there is no need for the negative pressure pump to run continuously, which greatly reduces the running time of the negative pressure pump, thereby reducing power consumption. The energy saving of the entire device is positively correlated with the transportation distance of the curb stone blank 3, that is, when the curb stone blank 3 needs to be transported over long distances in the curb stone production system, the energy-saving effect of the device is more obvious.

[0041] like Figure 8 and Fig. 9 As shown, the negative pressure shell 2 of the utility model includes a shell 22 with an open bottom and a bottom plate 21 fixedly covered at the bottom of the shell 22. Since the curbstone is mostly a rectangular structure, in order to ensure that the negative pressure shell 2 can firmly adsorb the curbstone blank 3, the bottom plate 21 and the shell 22 are both rectangular, wherein the adsorption holes 211 are through holes distributed in a rectangular array on the bottom plate 21, and the adsorption holes 211 are densely arranged. The bottom circumferential outer edge of the negative pressure shell 2 is integrally provided with a flange, and the flange is fixedly connected to the bottom plate 21 by a threaded bolt 23 and a nut 24, so that the bottom plate 21 and the shell 22 enclose the inner cavity of the negative pressure shell 2. According to the shape of the negative pressure shell 2, correspondingly, four support arms 4 are provided, which are respectively connected to the four side walls of the circumferential outer edge of the negative pressure shell 2 in a one-to-one correspondence, so as to ensure that when the support arms 4 move to the supporting position, the support parts 41 of the four support arms 4 can stably support the curbstone blank 3 from the four sides of the bottom surface of the curbstone blank 3.

[0042] A further improvement is that the support arm 4 rotates on the negative pressure shell 2 and the rotation axis is parallel to the bottom surface of the negative pressure shell 2.

[0043] By rotating the support arm 4, the activity space of the support arm 4 is reduced, making the entire device structure more compact. The support arm 4 mainly includes a connecting portion 42 and a supporting portion 41. The connecting portion 42 and the supporting portion 41 are both plate-shaped structures and the plate surfaces are perpendicular to each other. Figure 1 and Figure 2 As shown, the support arm 4 is in the release position. In this state, the connecting portion 42 is horizontally arranged, and the supporting portion 41 is vertically arranged on one side of the negative pressure shell 2, so that the negative pressure shell 2 can absorb the curbstone blank 3 or release the absorbed curbstone blank 3; Figure 3-Figure 6 As shown, the support arm 4 is in the supporting position. In this state, the connecting part 42 is vertically arranged on one side of the negative pressure shell 2, and the supporting part 41 is horizontally arranged directly below the negative pressure shell 2. The four supporting parts 41 cooperate with each other to provide stable support for the four sides of the bottom of the curb blank 3, making it convenient for the moving device to drive the negative pressure shell 2 and the curb blank 3 to move smoothly through the moving frame 1.

[0044] Specifically, a rotating seat 222 is provided on the four sides of the top of the shell 22, and a rotating unit 27 is provided on the rotating seat 222. The rotating unit 27 includes a rotating shaft 271 that is sealed and passes through the rotating seat 222. The axial direction of the rotating shaft 271 is parallel to the length direction of the side wall of the shell 22 corresponding to its own position. Nuts 272 are threadedly connected at both ends of the rotating shaft 271. The rotating seat 222 is clamped between the two nuts 272 to fix the position of the rotating shaft 271. The connecting portion 42 of the support arm 4 is sealed and sleeved on the rotating shaft 271. In this way, the support arm 4 can be rotated conveniently.

[0045] A further improvement is that a transmission assembly 6 is arranged between the support arm 4 and the drive assembly 5, and the transmission assembly 6 includes a transmission cylinder 61, a transmission piston 62 and a transmission connecting rod 63. The axial direction of the transmission cylinder 61 and the axial direction of the transmission piston 62 are parallel to the bottom surface of the negative pressure shell 2 and perpendicular to the rotation axis of the support arm 4. The transmission cylinder 61 is fixed on the negative pressure shell 2, one end of the transmission piston 62 slides in the transmission cylinder 61 along the axial direction of the transmission cylinder 61, and the other end is hinged to the support arm 4 through the transmission connecting rod 63. The drive assembly 5 includes a pressure regulating unit 51, and the pressure regulating unit 51 is used to adjust the pressure in the transmission cylinder 61.

[0046] Specifically, Figure 4-Figure 7As shown, the transmission assembly 6 includes two transmission cylinders 61 distributed side by side along the length direction of the side wall of the corresponding negative pressure shell 2. The transmission cylinder 61 can be either an oil cylinder or an air cylinder. The transmission cylinder 61 is fixed to the top surface of the shell 22 and faces the corresponding side wall. The two transmission cylinders 61 are both slidably connected with a transmission piston 62. The two transmission pistons 62 are fixedly connected by a connecting seat 631. The two ends of the transmission connecting rod 63 are respectively hinged to the connecting seat 631 and the connecting portion 42 of the support arm 4. The end of the transmission cylinder 61 close to the side wall is provided with The second sponge ring 612 and the transmission connecting rod 63 seal through the second sponge ring 612 to facilitate the pressure change inside the transmission cylinder 61 and prevent external dust particles from entering the transmission cylinder 61; the two transmission cylinders 61 are connected at one end away from the second sponge ring 612 through a connecting pipe 611, and the pressure regulating unit 51 is used to adjust the internal pressure of the connecting pipe 611 to adjust the pressure in the transmission cylinder 61, so that after the transmission piston 62 moves along its own axial direction, it acts on the support arm 4 through the transmission connecting rod 63, thereby driving the support arm 4 to rotate.

[0047] A further improvement is that the pressure regulating unit 51 includes a pressure regulating cylinder 511, a pressure regulating piston 512 and a reciprocating unit 513, the pressure regulating cylinder 511 is fixed on the negative pressure shell 2 and is connected to the transmission cylinder 61, one end of the pressure regulating piston 512 slides in the pressure regulating cylinder 511 along the axial seal of the pressure regulating cylinder 511, and the reciprocating unit 513 is connected to the other end of the pressure regulating piston 512 to realize the reciprocating end of the pressure regulating piston 512 along its own axial direction; the pressure regulating cylinder 511 is connected to the transmission cylinder 61 in the transmission assembly 6 corresponding to each support arm 4; the pressure regulating cylinder 511 extends in the vertical direction and is fixed between the transmission cylinders 61 in the transmission assembly 6 corresponding to each support arm 4.

[0048] After adopting the above-mentioned improvement, the device structure is made more compact. The reciprocating unit 513 can drive the pressure-regulating piston 512 to move along its own axial direction, thereby changing the pressure in the pressure-regulating cylinder 511. The pressure-regulating cylinder 511 is connected to the connecting pipe 611, thereby changing the pressure in the transmission cylinder 61. After the transmission connecting rod 63 moves along its own axial direction, it acts on the support arm 4 through the transmission connecting rod 63, so that after the reciprocating unit 513 is running, it can simultaneously drive the four support arms 4 to rotate between the supporting position and the releasing position.

[0049] Specifically, Figure 5-Figure 7As shown, the driving assembly 5 also includes a hollow pressure-regulating shell 52 fixed to the top surface of the shell 22, and the pressure-regulating shell 52 is fixed between four connecting tubes 611 and is interconnected with the four connecting tubes 611; two pressure-regulating cylinders 511 are provided, which are fixedly connected to the top of the pressure-regulating shell 52 and extend upward, and a first sponge ring 5111 is provided on the top of the pressure-regulating cylinder 511, and the pressure-regulating piston 512 seals and penetrates the first sponge ring 5111, so as to prevent dust particles in the external air from entering the pressure-regulating cylinder 511; the reciprocating unit 513 includes a driving motor 514, and the driving motor 514 is fixed to the top of the shell 22 through a motor seat 518, and the output end of the driving motor 514 is fixedly connected to one end of the active connecting rod 515, and the other end of the active connecting rod 515 is hinged with a horizontal reciprocating rod 517 through a driven connecting rod 516, and the two ends of the reciprocating rod 517 are respectively fixedly connected to the top ends of the two pressure-regulating pistons 512.

[0050] In this way, after the driving motor 514 is running, it drives the active connecting rod 515 to rotate, and the active connecting rod 515 acts on the reciprocating rod 517 through the driven connecting rod 516, so that the reciprocating rod 517 can move up and down, thereby driving the pressure-regulating piston 512 to move up and down, changing the pressure in the pressure-regulating cylinder 511, and the pressure-regulating cylinder 511 is connected to the transmission cylinder 61 through the pressure-regulating shell 52 and the connecting pipe 611 in turn, so that the internal pressure of the transmission cylinder 61 changes synchronously, thereby causing the transmission piston 62 to move axially, and then the support arm 4 rotates through the transmission connecting rod 63.

[0051] A further improvement is that a positioning protrusion 221 is provided on the circumferential outer edge of the negative pressure shell 2 , and under the supporting position, the supporting arm 4 abuts against the positioning protrusion 221 .

[0052] The positioning protrusion 221 can limit the maximum downward rotation range of the support arm 4. When the connecting portion 42 of the support arm 4 abuts against the positioning protrusion 221, the support arm 4 is in the supporting position. At this time, the support portion 41 can be ensured to be in a horizontal position to ensure that the support arm 4 can stably support the curb blank 3.

[0053] A further improvement is that the movable frame 1 and the negative pressure shell 2 are connected by an elastic member 26; the negative pressure shell 2 is fixedly connected to a negative pressure pipe 25, the negative pressure pipe 25 includes a guide pipe 251 extending in a vertical direction and connected to the negative pressure shell 2, and the guide pipe 251 is slidably penetrated on the movable frame 1.

[0054] Specifically, the negative pressure tube 25 includes four integrally connected guide tubes 251, two longitudinal tubes 252 and a transverse tube 253. The four guide tubes 251 extend in the vertical direction and the bottom is fixedly connected to the shell 22. The guide tubes 251 slide through the movable frame 1. The axes of the two longitudinal tubes 252 are parallel to the width direction of the shell 22, and the axes of the transverse tube 253 are parallel to the length direction of the shell 22. The two ends of the two longitudinal tubes 252 are connected to the top ends of the four guide tubes 251 respectively, and the two ends of the transverse tube 253 are connected to the middle parts of the two longitudinal tubes 252 respectively. An upward negative pressure port is integrally provided at the middle position of the transverse tube 253, and the negative pressure port is used to connect a negative pressure pump. Four elastic members 26 are provided, and the elastic members 26 are compression springs, which are correspondingly sleeved on the outside of the four guide tubes 251 and the two ends are connected to the top of the movable frame 1 and the shell 22 respectively.

[0055] After adopting the above improvement, by connecting the input end of the negative pressure pump with the negative pressure port on the cross pipe 253, the negative pressure pump can be connected with the inner cavity of the negative pressure shell 2 through the negative pressure pipe 25, so as to generate negative pressure at the adsorption hole 211 to firmly adsorb the curbstone blank 3; and by using the guide tube 251, it can be ensured that when the moving device drives the moving frame 1 to move in the horizontal direction, it can drive the negative pressure shell 2 and the curbstone blank 3 to move smoothly; when the curbstone blank 3 is absorbed, the elastic member 26 can be used for convenient buffering, specifically In other words, the mobile device moves the negative pressure shell 2 to the top of the curb blank 3 and then continues to move the mobile frame 1 downward, which can drive the negative pressure shell 2 to move downward, and utilize the elastic deformation of the elastic member 26 to facilitate the distance buffer between the mobile frame 1 and the negative pressure shell 2, so that the bottom plate 21 can be firmly pressed against the surface of the curb blank 3, ensuring that the distance between the adsorption hole 211 and the curb blank 3 is small enough, and then the negative pressure pump is started, and after negative pressure is generated at the adsorption hole 211, the curb blank 3 can be firmly adsorbed.

[0056] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A grabbing device for curbstone production, characterized in that: include: A mobile frame (1), wherein the mobile frame (1) is configured to be driven by a translation device; A negative pressure shell (2), the negative pressure shell (2) being arranged below the movable frame (1), the bottom surface of the negative pressure shell (2) being densely covered with adsorption holes (211) connected to its inner cavity, the negative pressure shell (2) being used to connect to a negative pressure pump to absorb the curbstone blank (3); A support arm (4), the support arm (4) having a support portion (41), the support arm (4) being distributed along the circumference of the negative pressure shell (2) and being movably arranged between a support station and a release station, wherein at the support station, the support portion (41) is located directly below the negative pressure shell (2) to support the curb stone blank (3), and at the release station, the support arm (4) is located on one side of the curb stone blank (3) adsorbed by the negative pressure shell (2); A driving component (5), wherein the driving component (5) is used to drive the supporting arm (4) to move.

2. The grabbing device for curbstone production according to claim 1, characterized in that: The support arm (4) rotates on the negative pressure shell (2) and the axis of rotation is parallel to the bottom surface of the negative pressure shell (2).

3. The grabbing device for curbstone production according to claim 2, characterized in that: A transmission assembly (6) is arranged between the support arm (4) and the drive assembly (5), and the transmission assembly (6) comprises a transmission cylinder (61), a transmission piston (62) and a transmission connecting rod (63). The axial direction of the transmission cylinder (61) and the axial direction of the transmission piston (62) are both parallel to the bottom surface of the negative pressure shell (2) and perpendicular to the rotation axis of the support arm (4). The transmission cylinder (61) is fixed on the negative pressure shell (2), one end of the transmission piston (62) slides in the transmission cylinder (61) in a sealed manner along the axial direction of the transmission cylinder (61), and the other end is hinged to the support arm (4) through the transmission connecting rod (63). The drive assembly (5) comprises a pressure regulating unit (51), and the pressure regulating unit (51) is used to adjust the pressure in the transmission cylinder (61).

4. The grabbing device for curbstone production according to claim 3, characterized in that: The pressure regulating unit (51) comprises a pressure regulating cylinder (511), a pressure regulating piston (512) and a reciprocating unit (513); the pressure regulating cylinder (511) is fixed on the negative pressure shell (2) and is connected to the transmission cylinder (61); one end of the pressure regulating piston (512) slides in the pressure regulating cylinder (511) in a sealed manner along the axial direction of the pressure regulating cylinder (511); the reciprocating unit (513) is connected to the other end of the pressure regulating piston (512) to realize the reciprocating end of the pressure regulating piston (512) along its own axial direction.

5. The grabbing device for curbstone production according to claim 4, characterized in that: The pressure regulating cylinder (511) is in communication with the transmission cylinder (61) in the transmission assembly (6) corresponding to each support arm (4).

6. The grabbing device for curbstone production according to claim 5, characterized in that: The pressure regulating cylinder (511) extends in a vertical direction and is fixed between the transmission cylinders (61) in the transmission assemblies (6) corresponding to the support arms (4).

7. The grabbing device for curbstone production according to any one of claims 1 to 6, characterized in that: At the supporting station, the supporting portion (41) is horizontally arranged directly below the negative pressure shell (2).

8. The grabbing device for curbstone production according to any one of claims 1 to 6, characterized in that: A positioning protrusion (221) is provided on the circumferential outer edge of the negative pressure shell (2), and under the supporting position, the supporting arm (4) abuts against the positioning protrusion (221).

9. The grabbing device for curbstone production according to any one of claims 1 to 6, characterized in that: The movable frame (1) and the negative pressure shell (2) are connected via an elastic member (26).

10. The grabbing device for curbstone production according to claim 9, characterized in that: The negative pressure shell (2) is fixedly connected to a negative pressure pipe (25), and the negative pressure pipe (25) comprises a guide pipe (251) extending in a vertical direction and connected to the negative pressure shell (2), and the guide pipe (251) is slidably arranged on the movable frame (1).

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