CN219685653U - Multistage formula buffering clamping jaw - Google Patents

Abstract

The utility model relates to a multi-section type buffering clamping jaw which comprises a group of multi-section type air cylinders and an air cylinder shell sleeved on the outer peripheral surface of the multi-section type air cylinders, wherein a plurality of groups of fasteners are fixed between the air cylinder shell and the multi-section type air cylinders, and a plurality of groups of air holes which are vertically distributed are formed in the multi-section type air cylinders; the lower end face of the cylinder shell is fixedly provided with a connecting rod shell, the lower end part of a push rod of the multi-section cylinder is fixedly provided with a cylinder joint, two sides of the cylinder joint are rotationally connected with driving connecting rods, shoulder bolts are inserted and rotated between the driving connecting rods and the cylinder joint, one end, far away from the cylinder joint, of each group of driving connecting rods is rotationally connected with a claw arm, and shoulder bolts are inserted and rotated between each group of driving connecting rods and the claw arm; the claw arms and the connecting rod shell are inserted and rotated with connecting rod optical axes, and the lower end parts of the claw arms of each group are respectively fixed with a claw plate. The utility model realizes the control of the opening degree of the clamping jaw and reduces the probability of false grasping of the clamping jaw.

Description

Multistage formula buffering clamping jaw

Technical Field

The utility model relates to the field of sorting clamping jaws, in particular to a multi-section type buffering clamping jaw.

Background

With the rapid development of industrial automation, the clamping jaw is gradually replacing the traditional manual work. The clamping jaw is used as high-tech automatic production equipment and is a product in the mechanical and automatic development process. The device can replace heavy labor of people to realize mechanization and automation of production, can be operated in harmful environments to ensure personal safety, and has wide development prospect.

The existing clamping jaw is divided into an electric driving mode and a pneumatic driving mode, the electric clamping jaw is suitable for being applied to scenes such as small objects needing precise control and regular objects clamping, light weight of the objects clamping, low clean load of places and the like, and has high price; while pneumatic jaws are more cost effective, the size of the jaws that open is generally fixed.

The inventors believe that there are the following drawbacks: under the material of multiple equidimension difference on the conveyer belt, the big probability can be at the in-process that presss from both sides the in-range object of clamping jaw open and get the letter sorting together, presss from both sides and gets the precision lower, and the probability of grabbing by mistake is higher, so there is the space of improvement.

Disclosure of Invention

In order to realize control of the opening degree of the clamping jaw and reduce the probability of false grabbing of the clamping jaw, the utility model provides a multi-section buffering clamping jaw.

The utility model provides a multi-section type buffering clamping jaw which adopts the following technical scheme:

the multi-section type buffering clamping jaw comprises a group of multi-section type air cylinders and an air cylinder shell sleeved on the outer peripheral surface of the multi-section type air cylinders, wherein a plurality of groups of fasteners are fixed between the air cylinder shell and the multi-section type air cylinders, and a plurality of groups of air holes which are vertically distributed are formed in the multi-section type air cylinders; the lower end face of the cylinder shell is fixedly provided with a connecting rod shell, the lower end part of a push rod of the multi-section cylinder is fixedly provided with a cylinder joint, two sides of the cylinder joint are rotationally connected with driving connecting rods, shoulder bolts are inserted and rotated between the driving connecting rods and the cylinder joint, one end, far away from the cylinder joint, of each group of driving connecting rods is rotationally connected with a claw arm, and shoulder bolts are inserted and rotated between each group of driving connecting rods and the claw arm; the claw arms and the connecting rod shell are inserted and rotated with connecting rod optical axes, and the lower end parts of the claw arms of each group are respectively fixed with a claw plate.

By adopting the technical scheme, the opening size of the clamping and grabbing plate of the existing common clamping jaw cannot be adjusted, and when objects with different sizes are clamped, the opening sizes of the clamping and grabbing plate are fixed, so that larger objects cannot be grabbed, and surrounding objects can be grabbed by mistake when the smaller objects are grabbed, thereby causing the clamping jaw to have low grabbing efficiency; aiming at the problems existing in the existing clamping jaw, the utility model provides a multi-section type buffering clamping jaw, wherein an air cylinder connector is fixed at the lower end part of an air cylinder push rod, the air cylinder connector pushes a driving connecting rod to rotate, the driving connecting rod rotates to drive a clamping jaw arm to rotate, and the clamping jaw arm rotates to drive a clamping jaw plate to rotate, so that the closing control of the clamping jaw plate is realized; through adopting the multistage type air cylinder, through the expansion range of the multistage type stroke control clamping plate of the multistage type air cylinder, when a larger object needs to be clamped, the air hole on the multistage type air cylinder is completely opened, the downward movement stroke of the push rod of the multistage type air cylinder is increased, the expansion range of two groups of clamping claw plates is enlarged, and the clamping of the larger object is realized; when a smaller object needs to be clamped, the multi-section cylinder only opens two groups of air holes below the cylinder, so that the movement stroke of a push rod of the multi-section cylinder is reduced, the opening range of the two groups of clamping claw plates is reduced, and the probability of false grabbing of the clamping claw plates is reduced; the opening range of the clamping claw plate is controlled according to the size of the clamping object, so that redundant waste of the clamping force caused by overlarge clamping force when the object is clamped is avoided.

Preferably, notches are vertically formed in the edges of two sides of the horizontal upper end face of the cylinder shell in a penetrating manner, linear bearings are inserted and installed in each set of notches, and a plurality of sets of fasteners are fixed between the linear bearings and the horizontal upper end face of the cylinder shell; guide shafts are inserted into the linear bearings in a penetrating manner, and buffer springs are sleeved at the upper end parts of the guide shafts in each group; the lower end of the buffer spring is fixedly connected with the horizontal upper end face of the linear bearing in an abutting mode, a connecting plate is connected with the upper end face of the buffer spring in an abutting mode, fixing blocks are clamped at two sides of the horizontal edge of the upper end of the cylinder shell, a plurality of groups of fasteners are fixed between the upper end of the fixing blocks and the connecting plate, the guide shaft sequentially penetrates through and is connected with the lower end of the fixing blocks, the linear bearing, the buffer spring, the connecting plate and the upper end of the fixing blocks from bottom to top, and nuts are connected with the upper end of the guide shaft in a threaded mode.

By adopting the technical scheme, the buffer spring is arranged to play a role in buffering when the clamping jaw is used for grabbing objects with different heights, so that the clamping jaw is prevented from vertically pressing downwards when grabbing, the probability of damage to the mechanical arm caused by rigid impact to the mechanical arm when the clamping jaw clamps the objects is reduced, the mechanical arm is protected by the buffer spring, deformation caused by collision is reduced, and the service lives of the mechanical arm and the clamping jaw are prolonged; the guide shaft ensures that the clamping jaw moves along the line in the pressing and rebounding processes, reduces the deflection of the clamping jaw in the moving process and ensures the stability of the clamping jaw.

Preferably, vertical wing plates are integrally formed on two side edges of the horizontal upper end face of the connecting plate, a connecting block is fixed at the tail end of a mechanical arm for controlling the multi-section buffering clamping jaw, and a plurality of groups of fasteners are fixed between the connecting block and the connecting plate.

Through adopting above-mentioned technical scheme, the setting of vertical pterygoid lamina on the connecting plate has realized that this multistage formula buffering clamping jaw has the quick replacement function, and connecting block direct mount is on four-axis robot, when the jack catch of other specifications needs to be changed, the operating personnel only need to lift down a plurality of groups of fasteners fixed between connecting plate and the connecting block, just realizes the dismantlement of jack catch, need not from the whole jack catch module of new installation, has improved the convenience that the jack catch was changed, has realized making this robot reach the ability of snatching certain object specially through changing the jack catch.

Preferably, buffer silica gel is fixed on the side walls of the two groups of the clamping claw plates, which are close to each other.

Through adopting above-mentioned technical scheme, the setting of buffering silica gel, increase the card grab the board when pressing from both sides and get the area of contact with the material, simultaneously, the material of silica gel can increase the frictional force of pawl board when pressing from both sides and get, has ensured the centre gripping stability of certain smooth material, has improved the clamping efficiency of pawl board to a certain extent.

Preferably, grooves are formed in two ends of an optical axis of the connecting rod, optical axis snap springs are fixedly clamped in the grooves, and the optical axis snap springs are tightly abutted to and fixed with the outer side wall of the connecting rod shell.

Through adopting above-mentioned technical scheme, the concave recess that is equipped with in the both ends of connecting rod optical axis, the joint is fixed with the optical axis jump ring in the recess, and the axial direction's of connecting rod optical axis motion has been restricted in the setting of optical axis jump ring, has further ensured the installation stability between claw arm and the connecting rod shell.

Preferably, a silencing valve is arranged on the side wall of the multi-section cylinder.

Through adopting above-mentioned technical scheme, the noise elimination valve has reduced the noise that multistage formula cylinder produced in the motion process.

In summary, the present utility model includes at least one of the following beneficial technical effects:

1. the lower end part of the air cylinder push rod is fixedly provided with an air cylinder connector, the air cylinder connector pushes the driving connecting rod to rotate, the driving connecting rod rotates to drive the jaw arm to rotate, and the jaw arm rotates to drive the jaw plate to rotate, so that the jaw plate is controlled to be closed; through adopting the multistage type air cylinder, through the expansion range of the multistage type stroke control clamping plate of the multistage type air cylinder, when a larger object needs to be clamped, the air hole on the multistage type air cylinder is completely opened, the downward movement stroke of the push rod of the multistage type air cylinder is increased, the expansion range of two groups of clamping claw plates is enlarged, and the clamping of the larger object is realized; when a smaller object needs to be clamped, the multi-section cylinder only opens two groups of air holes below the cylinder, so that the movement stroke of a push rod of the multi-section cylinder is reduced, the opening range of the two groups of clamping claw plates is reduced, and the probability of false grabbing of the clamping claw plates is reduced; the opening range of the clamping claw plate is controlled according to the size of the clamping object, so that redundant waste of the clamping force caused by overlarge clamping force when the object is clamped is avoided;

2. the buffer spring is arranged to play a role in buffering when the clamping jaw grabs an object, so that the probability of damage to the mechanical arm caused by rigid impact to the mechanical arm when the clamping jaw grabs an object is reduced, and the service lives of the mechanical arm and the clamping jaw are prolonged; the arrangement of the buffer silica gel increases the contact area between the clamping plate and the material during clamping, and meanwhile, the friction force of the clamping plate during clamping can be increased by the silica gel, so that the clamping stability of certain smooth materials is ensured;

3. the arrangement of the optical axis clamp spring limits the movement of the connecting rod in the axial direction of the optical axis, and further ensures the installation stability between the claw arm and the connecting rod shell; the noise elimination valve reduces the noise generated by the multi-section cylinder in the motion process; the operator only needs to detach a plurality of groups of fasteners fixed between the connecting plate and the connecting block, so that the disassembly of the clamping jaw is realized, and the convenience of clamping jaw replacement is improved.

Drawings

FIG. 1 is a schematic overall structure of an embodiment of the present utility model;

FIG. 2 is an enlarged view at A in FIG. 1;

FIG. 3 is an enlarged view at B in FIG. 1;

FIG. 4 is a schematic illustration of the overall structure of the hidden link housing;

fig. 5 is a schematic diagram of the overall structure of the mechanical arm for fixing the multi-stage buffering clamping jaw.

Reference numerals illustrate: 1. a multi-stage cylinder; 2. a cylinder housing; 3. a fastener; 4. a connecting rod housing; 5. a cylinder joint; 6. a drive link; 7. shoulder bolts; 8. a claw arm; 9. a connecting rod optical axis; 10. a claw plate; 11. a notch; 12. a linear bearing; 13. a guide shaft; 14. a buffer spring; 15. a connecting plate; 16. a fixed block; 17. a nut; 18. a vertical wing plate; 19. a connecting block; 20. buffering silica gel; 21. a groove; 22. an optical axis clamp spring; 23. a muffler valve; 24. a mechanical arm; 25. and (5) air holes.

Detailed Description

The utility model is described in further detail below with reference to fig. 1-5.

The embodiment of the utility model discloses a multi-section type buffering clamping jaw. Referring to fig. 1, the multi-section buffering clamping jaw comprises a group of multi-section air cylinders 1 and an air cylinder shell 2 sleeved on the outer peripheral surface of the multi-section air cylinders 1, a plurality of groups of fasteners 3 are fixed between the air cylinder shell 2 and the multi-section air cylinders 1, and a plurality of groups of air holes 25 which are vertically distributed are formed in the multi-section air cylinders 1; the side wall of the multi-section cylinder 1 is provided with a silencing valve 23; the noise elimination valve 23 reduces the noise generated by the multi-stage cylinder 1 during the movement process; a connecting rod housing 4 is fixed to the lower end surface of the cylinder housing 2.

Referring to fig. 1 and 4, a cylinder joint 5 is fixed at the lower end of a push rod of a multi-section cylinder 1, driving connecting rods 6 are rotationally connected to two sides of the cylinder joint 5, shoulder bolts 7 are rotationally connected between the driving connecting rods 6 and the cylinder joint 5 in a plugging manner, claw arms 8 are rotationally connected to one ends of the driving connecting rods 6, which are far away from the cylinder joint 5, of each group, and shoulder bolts 7 are rotationally connected between the driving connecting rods 6 and the claw arms 8 in each group in a plugging manner.

Referring to fig. 1, 2 and 4, a connecting rod optical axis 9 is inserted and rotated between a claw arm 8 and a connecting rod shell 4, grooves 21 are formed at two ends of the connecting rod optical axis 9, optical axis snap springs 22 are fixedly clamped in the grooves 21 of each group, and each group of optical axis snap springs 22 is tightly abutted and fixed with the outer side wall of the connecting rod shell 4; the arrangement of the optical axis clamp spring 22 limits the movement of the connecting rod optical axis 9 in the axial direction, and further ensures the installation stability between the claw arm 8 and the connecting rod shell 4.

Referring to fig. 1 and 4, a jaw plate 10 is fixed to the lower end portion of each group of jaw arms 8; the side walls of the two groups of claw plates 10, which are close to each other, are respectively fixed with buffer silica gel 20; the setting of buffering silica gel 20, increase the contact area of card grab board and material when pressing from both sides and getting, simultaneously, the frictional force of the material ability increase card claw board 10 when pressing from both sides and getting of silica gel has ensured the clamping stability of certain smooth material, has improved the clamping efficiency of card claw board 10 to a certain extent.

The cylinder joint 5 pushes the driving connecting rod 6 to rotate, the driving connecting rod 6 rotates to drive the jaw arm 8 to rotate, and the jaw arm 8 rotates to drive the jaw plate 10 to rotate, so that the closing of the jaw plate 10 is controlled; through adopting multistage formula cylinder 1, according to the size of centre gripping object, through the range of opening of multistage formula cylinder 1 multistage formula stroke control card grabbing plate, the clamping force is too big when having avoided the centre gripping object, causes the redundant waste of clamping force.

Referring to fig. 1 and 5, vertical wing plates 18 are integrally formed at two side edges of a horizontal upper end surface of a connecting plate 15, a connecting block 19 is fixed at the tail end of a mechanical arm 24 for controlling the multi-section buffering clamping jaw, and a plurality of groups of fasteners 3 are fixed between the connecting block 19 and the connecting plate 15; the setting of vertical pterygoid lamina 18 on connecting plate 15 has realized that this multistage formula buffering clamping jaw has the quick replacement function, and connecting block 19 direct mount is on four-axis robot, when the jack catch of other specifications needs to be changed, the operation personnel only need lift down a plurality of groups fastener 3 fixed between connecting plate 15 and the connecting block 19, just realizes the dismantlement of jack catch, has improved the convenience that the jack catch was changed.

Referring to fig. 1 and 3, notches 11 are vertically penetrated at two side edges of the horizontal upper end surface of the cylinder housing 2, linear bearings 12 are inserted and installed in each set of notches 11, and a plurality of sets of fasteners 3 are fixed between the linear bearings 12 and the horizontal upper end surface of the cylinder housing 2; guide shafts 13 are inserted in the linear bearings 12 in a penetrating manner, and buffer springs 14 are sleeved at the upper ends of the guide shafts 13 in each group; the lower end of the buffer spring 14 is abutted and fixed with the horizontal upper end surface of the linear bearing 12, and the upper end surface of the buffer spring 14 is abutted with a connecting plate 15; the arrangement of the guide shaft 13 ensures that the clamping jaw moves along the line in the pressing and rebounding processes, reduces the deflection of the clamping jaw in the moving process and ensures the stability of the clamping jaw.

Referring to fig. 1 and 3, fixing blocks 16 are clamped at the positions of the upper end face of the connecting plate 15 and the two sides of the horizontal edge of the upper end part of the cylinder housing 2, a plurality of groups of fasteners 3 are fixed between the upper end part of the fixing blocks 16 and the connecting plate 15, a guide shaft 13 sequentially penetrates through the lower end part of the inserted fixing blocks 16, the linear bearing 12, the buffer spring 14, the connecting plate 15 and the upper end part of the fixing blocks 16 from bottom to top, and a nut 17 is connected with the upper end part of the guide shaft 13 in a threaded manner.

The buffer spring 14 plays a role in buffering when the clamping jaw grabs objects with different heights, so that the clamping jaw is prevented from vertically pressing down when grabbing, the probability of damage to the mechanical arm 24 caused by rigid impact to the mechanical arm 24 when the clamping jaw clamps the objects is reduced, and the buffer spring 14 protects the mechanical arm 24.

The implementation principle of the multi-section type buffering clamping jaw provided by the embodiment of the utility model is as follows:

the operator fixes the connecting block 19 at the tail end position of the mechanical arm 24 through the fastener 3, and fixes the connecting block 19 and the connecting plate 15 through the fastener 3, so that the fixed connection between the multi-section buffering clamping jaw and the mechanical arm 24 is realized; when different clamping jaws need to be replaced, the fastening piece 3 between the connecting block 19 and the connecting plate 15 is detached; the operator starts the multistage formula cylinder 1, and multistage formula cylinder 1 is according to the size of the object that needs snatched, the switching quantity of control gas pocket 25 to the motion stroke of control multistage formula cylinder 1 push rod has further controlled the expansion scope of jack catch board 10.

When the mechanical arm 24 controls the multi-section buffering clamping jaw to grab objects, the impact of the clamping jaw on the mechanical arm 24 is buffered by the setting of the buffering spring 14, the protection of the mechanical arm 24 is realized, the linear movement of the buffering spring 14 during compression and rebound is ensured by the setting of the guide shaft 13, and the deflection of the clamping jaw in the moving process is reduced; when the clamping claw plate 10 clamps an object, the buffer silica gel 20 further ensures the stability of the object in the clamping process; the utility model realizes the control of the opening degree of the clamping jaw and reduces the probability of false grasping of the clamping jaw.

The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims (6)

1. A multistage formula buffering clamping jaw, its characterized in that: the air cylinder comprises a group of multi-section air cylinders (1) and an air cylinder shell (2) sleeved on the outer peripheral surface of the multi-section air cylinders (1), wherein a plurality of groups of fasteners (3) are fixed between the air cylinder shell (2) and the multi-section air cylinders (1), and a plurality of groups of air holes (25) which are vertically distributed are formed in the multi-section air cylinders (1); the lower end face of the cylinder housing (2) is fixedly provided with a connecting rod housing (4), the lower end part of a push rod of the multi-section cylinder (1) is fixedly provided with a cylinder joint (5), two sides of the cylinder joint (5) are rotationally connected with driving connecting rods (6), shoulder bolts (7) are inserted and rotated between the driving connecting rods (6) and the cylinder joint (5), one end, far away from the cylinder joint (5), of each group of driving connecting rods (6) is rotationally connected with a claw arm (8), and each group of driving connecting rods (6) and each claw arm (8) are inserted and rotated with shoulder bolts (7); connecting rod optical axes (9) are inserted and rotated between the jaw arms (8) and the connecting rod shell (4), and jaw plates (10) are fixed at the lower end parts of the jaw arms (8) of each group.

2. A multi-segment buffer jaw according to claim 1, characterized in that: the two side edges of the horizontal upper end surface of the cylinder shell (2) are vertically penetrated with notches (11), each group of notches (11) are internally inserted with linear bearings (12), and a plurality of groups of fasteners (3) are fixed between the linear bearings (12) and the horizontal upper end surface of the cylinder shell (2); guide shafts (13) are inserted into the linear bearings (12) in a penetrating manner, and buffer springs (14) are sleeved at the upper end parts of the guide shafts (13) in each group; the lower end of the buffer spring (14) is fixedly connected with the horizontal upper end face of the linear bearing (12), the upper end face of the buffer spring (14) is fixedly connected with a connecting plate (15), a fixing block (16) is clamped at the two sides of the horizontal edge of the upper end of the connecting plate (15) and the upper end of the cylinder shell (2), a plurality of groups of fasteners (3) are fixed between the upper end of the fixing block (16) and the connecting plate (15), and the guide shaft (13) sequentially penetrates through and is connected with the lower end of the fixing block (16) in a penetrating mode from bottom to top, the linear bearing (12), the buffer spring (14), the connecting plate (15) and the upper end of the fixing block (16) are connected with nuts (17) in a threaded mode.

3. A multi-segment buffer jaw according to claim 2, characterized in that: the mechanical arm is characterized in that vertical wing plates (18) are integrally formed on two side edges of the horizontal upper end face of the connecting plate (15), connecting blocks (19) are fixed at the tail ends of mechanical arms for controlling the multi-section buffering clamping jaws, and a plurality of groups of fasteners (3) are fixed between the connecting blocks (19) and the connecting plate (15).

4. A multi-segment buffer jaw according to claim 3, characterized in that: buffer silica gel (20) is fixed on the side walls of the two groups of the clamping claw plates (10) which are close to each other.

5. A multi-segment buffer jaw according to claim 4, characterized in that: grooves (21) are formed in two ends of the connecting rod optical axis (9), optical axis snap springs (22) are fixedly clamped in the grooves (21), and the optical axis snap springs (22) are tightly abutted to and fixed with the outer side wall of the connecting rod shell (4).

6. A multi-segment buffer jaw according to claim 5, characterized in that: and a silencing valve (23) is arranged on the side wall of the multi-section cylinder (1).