阅读说明：本技术 抓盖装置以及回转式旋盖机 (Cover grabbing device and rotary cover screwing machine ) 是由 张启林 李智淼 李正良 樊缔 冯柏锋 于 2020-08-13 设计创作，主要内容包括：本发明涉及一种抓盖装置以及回转式旋盖机,用于抓取瓶盖,包括上盖壳、下盖壳、抓盖组件和驱动组件,上盖壳设置有贯穿其上下表面的上连通孔,下盖壳设置有贯穿其上下表面的下连通孔,上盖壳与下盖壳沿竖直方向弹性连接,抓盖组件包括三个夹盖头,三个夹盖头均匀环设于下连通孔,且三个夹盖头的第一端从下连通孔的下端延伸至下盖壳的外部,驱动组件包括两个能够相对运动的第一连杆和第二连杆,第一连杆和第二连杆均穿过上连通孔和下连通孔并与三个夹盖头连接,第一连杆和第二连杆能够驱动三个夹盖头夹紧或松开瓶盖。该结构具有方便对瓶盖对中定位和保障瓶盖质量的特点。(The invention relates to a cap grabbing device and a rotary cap screwing machine, which are used for grabbing a bottle cap and comprise an upper cap shell, a lower cap shell, a cap grabbing component and a driving component, wherein the upper cap shell is provided with an upper communicating hole penetrating through the upper surface and the lower surface of the upper cap shell, the lower cap shell is provided with a lower communicating hole penetrating through the upper surface and the lower surface of the lower cap shell, the upper cap shell and the lower cap shell are elastically connected along the vertical direction, the cap grabbing component comprises three cap clamping heads, the three cap clamping heads are uniformly and annularly arranged on the lower communicating hole, the first ends of the three cap clamping heads extend to the outside of the lower cap shell from the lower end of the lower communicating hole, the driving component comprises a first connecting rod and a second connecting rod which can move relatively, the first connecting rod and the second connecting rod both penetrate through the upper communicating hole and the lower communicating hole and are connected with the three cap. The structure has the characteristics of conveniently centering and positioning the bottle cap and ensuring the quality of the bottle cap.)

1. A cap grabbing device is used for installing a bottle cap and is characterized by comprising an upper cap shell, a lower cap shell, a cap grabbing component and a driving component, the upper cover shell is provided with an upper communication hole penetrating through the upper surface and the lower surface of the upper cover shell, the lower cover shell is provided with a lower communication hole penetrating through the upper surface and the lower surface of the lower cover shell, the upper cover shell is elastically connected with the lower cover shell along the vertical direction, the cover grabbing component comprises three cover clamping heads which are uniformly and annularly arranged on the lower communicating hole, and first ends of the three capping heads extend from a lower end of the lower communication hole to the outside of the lower cap shell, the driving assembly comprises a first connecting rod and a second connecting rod which can move relatively, the first connecting rod and the second connecting rod both penetrate through the upper communicating hole and the lower communicating hole and are connected with the three cover clamping heads, the first connecting rod and the second connecting rod can drive the three cap clamping heads to clamp or loosen the bottle cap.

2. The cover grabbing device according to claim 1, wherein a clamping groove is formed in the second end of the cover clamping head, an abutting surface which forms an included angle with the horizontal plane is arranged between the first end and the second end of the cover clamping head, the first connecting rod is provided with a through hole which is communicated with the two ends of the first connecting rod, the second connecting rod is arranged in the through hole in a penetrating mode, the lower end of the second connecting rod is located outside the through hole, a convex portion is arranged at the lower end of the first connecting rod, the first connecting rod and the cover clamping head are connected through the convex portion and the clamping groove in an inserting mode, an abutting portion matched with the abutting surface is arranged at the lower end of the second connecting rod, and the second connecting rod and the cover clamping head abut against the abutting surface through the abutting portion.

3. The cover gripping device as claimed in claim 2, wherein the upper end of the second link is located in the through hole, the upper end of the first link is provided with a driving rod, one end of the driving rod is inserted into the through hole, a first spring is arranged between the driving rod and the second link, the driving rod can compress the first spring and make the second link abut against the cover clamping head, and the driving rod can selectively abut against the upper end of the first link, so that the driving rod can drive the first link and the second link to move along the vertical direction.

4. A cover gripping device as claimed in claim 3, wherein the upper end of the first link is sleeved with a first adjusting nut, a second spring is provided between an end surface of the lower cover shell adjacent to the upper cover shell and the first adjusting nut, the first adjusting nut can compress the second spring when the first link moves downward, and the second spring can drive the first link to move upward.

5. The cover grasping device according to claim 1, wherein a third spring is disposed between the upper cover shell and the lower cover shell, the upper cover shell and the lower cover shell being capable of compressing the third spring and selectively abutting an end of the upper cover shell opposite the lower cover shell.

6. The cover grabbing device according to claim 5, further comprising a connecting cover shell, wherein one end of the upper cover shell opposite to one end of the lower cover shell is connected with the connecting cover shell, an internal thread is arranged on one side, close to the upper cover shell, of the connecting cover shell, an external thread matched with the internal thread is arranged on the upper cover shell, the connecting cover shell is fixedly connected with the upper cover shell through the internal thread and the external thread, a guide hole is arranged on one side, close to the lower cover shell, of the connecting cover shell, a guide key matched with the guide hole is arranged on the lower cover shell, the guide key is plugged with the guide hole and can slide along the length direction of the guide hole, and the connecting cover shell is slidably connected with the lower cover shell through the guide hole and the guide key.

7. The cap grabbing device according to claim 1, wherein a side surface of the cap clamping head facing the bottle cap is provided with a cap clamping colloid, the cap clamping colloid is matched with the bottle cap, and the hardness of the cap clamping colloid is smaller than that of the bottle cap.

8. A rotary cap screwing machine, comprising the cap grabbing device as claimed in any one of claims 1 to 7, and further comprising a lifting device and a rotating device, wherein the lifting device is connected with a driving rod of the cap grabbing device, the lifting device can drive the driving rod to move in a vertical direction, the rotating device is connected with the upper cap shell, and the rotating device can drive the cap grabbing device to horizontally rotate around the axis of the cap grabbing device.

9. The rotary cap screwing machine as claimed in claim 8, wherein the lifting device comprises a first driving member for driving the upper and lower cap shells to move in a vertical direction and a second driving member for driving the driving rod to move in a vertical direction.

10. The rotary cap screwing machine as recited in claim 8, wherein the cap grabbing device is plural, and the plural cap grabbing devices are annularly arranged along the horizontal direction.

Technical Field

The invention relates to the technical field of cap screwing machines, in particular to a cap grabbing device and a rotary cap screwing machine comprising the same.

Background

At present, beverages and seasonings in the market are packaged and sold in a bottled mode. This packing includes bottle and bottle lid, and the bottle lid is tinplate three spiral covers, need install the bottle lid on the bottle and rotatory bottle lid realizes threaded connection during the packing. Because the surface of the tinplate triple-spiral cover is smooth and not beneficial to applying torque, large acting force is needed when the bottle cap is grabbed and the bottle cap is rotated, the bottle cap is easy to deform, and the sealing performance of packaging is affected. Meanwhile, when the bottle cap is grabbed, the grabbing device and the bottle cap are not centered, so that the bottle cap and the bottle body cannot be butted easily, and the packaging operation efficiency is influenced.

Disclosure of Invention

The invention aims to provide a cap grabbing device and a rotary cap screwing machine, which are convenient for centering and positioning a bottle cap and avoid the deformation of the bottle cap.

In order to achieve the purpose, the invention adopts the following technical scheme:

there is provided a cap gripping device for mounting a bottle cap, comprising: including upper cover shell, lower cover shell, grab lid subassembly and drive assembly, the upper cover shell is provided with the last intercommunicating pore that runs through its upper and lower surface, the lower cover shell is provided with the lower intercommunicating pore that runs through its upper and lower surface, the upper cover shell with lower cover shell is along vertical direction elastic connection, grab the lid subassembly and include three clamp capping head, three clamp capping head is evenly encircled and is located lower intercommunicating pore, and three the first end of clamp capping head is followed the lower extreme of lower intercommunicating pore extends to the outside of lower cover shell, drive assembly includes two first connecting rod and the second connecting rod that can relative motion, first connecting rod with the second connecting rod all passes the upper intercommunicating pore with lower intercommunicating pore and with three the clamp capping head is connected, first connecting rod with the second connecting rod can drive threely the clamp capping head presss from both sides tightly or unclamps the bottle lid.

Further, the second end of double-layered capping head is provided with the draw-in groove, be provided with the butt face of personally submitting the contained angle with the level between the first end of double-layered capping head and the second end, first connecting rod is provided with the through-hole at its both ends of intercommunication, the second connecting rod is worn to locate in the through-hole, just the lower extreme of second connecting rod is located the outside of through-hole, the lower extreme of first connecting rod is provided with the convex part, first connecting rod with double-layered capping head passes through the convex part with the draw-in groove is pegged graft, the lower extreme of second connecting rod be provided with butt face complex butt portion, the second connecting rod with double-layered capping head passes through butt portion with butt face butt.

Furthermore, the upper end of second connecting rod is located in the through-hole, the upper end of first connecting rod is provided with the actuating lever, the one end of actuating lever is inserted and is located the through-hole, the actuating lever with be provided with first spring between the second connecting rod, the actuating member can compress first spring makes the second connecting rod with press from both sides the lid head butt, just the actuating lever can with the upper end selectivity butt of first connecting rod, so that the actuating lever can drive first connecting rod with the second connecting rod moves along vertical direction.

Further, the upper end cover of first connecting rod is equipped with first adjusting nut, the lower cover shell is close to an terminal surface of upper cover shell with be provided with the second spring between the first adjusting nut, work as during first connecting rod downstream, first adjusting nut can compress the second spring, and, the second spring can drive first connecting rod upward movement.

Furthermore, a third spring is arranged between the upper cover shell and the lower cover shell, and the upper cover shell and the lower cover shell can compress the third spring and enable one end of the upper cover shell opposite to the lower cover shell to be selectively abutted.

Further, still including connecting the lid shell, the upper cover shell with the lower cover shell relative one end respectively with it connects to connect the lid shell, it is close to connect the lid shell one side of upper cover shell is provided with the internal thread, the upper cover shell be provided with female screw-thread fit's external screw thread, connect the lid shell with pass through between the upper cover shell the internal thread with external screw thread connection is fixed, it is close to connect the lid shell one side of lower cover shell is provided with the guiding hole, the lower cover shell be provided with guiding hole complex feather key, the feather key with the guiding hole is pegged graft and can be followed the length direction of guiding hole slides, connect the lid shell with pass through between the lower cover shell the guiding hole with feather key sliding connection.

Furthermore, a clamping cover colloid is arranged on one side surface, facing the bottle cap, of the clamping cover head, the clamping cover colloid is matched with the bottle cap, and the hardness of the clamping cover colloid is smaller than that of the bottle cap.

Still provide a rotation spiral cover machine, including foretell cover device of grabbing, still include elevating gear and rotary device, elevating gear with the actuating lever of grabbing the cover device is connected, elevating gear can drive the actuating lever moves along vertical direction, rotary device with the upper cover shell is connected, rotary device can drive grab the cover device and wind grab the axis horizontal rotation of cover device.

Furthermore, elevating gear includes first driving piece and second driving piece, first driving piece is used for the drive the upper cover shell with the lower cover shell moves along vertical direction, the second driving piece is used for the drive the actuating lever moves along vertical direction.

Furthermore, the cover grabbing devices are multiple and are annularly arranged along the horizontal direction.

Compared with the prior art, the invention has the beneficial effects that:

according to the cap grabbing device and the rotary cap screwing machine, the three cap clamping heads are annularly arranged on the cap grabbing component, so that the axis of the cap grabbing component is overlapped with the axis of a bottle cap, and the bottle cap is conveniently centered and positioned. Meanwhile, the upper cover shell is elastically connected with the lower cover shell through the third spring, the buffer effect is achieved by applying pressure downwards, the bottle cap is prevented from being deformed by large impact force, and the bottle cap centering positioning device has the advantages of being convenient to center and position the bottle cap and guaranteeing the quality of the bottle cap.

Drawings

Fig. 1 is a cross-sectional view of a cap grasping apparatus of an embodiment.

Fig. 2 is a cross-sectional view of an embodiment of a grip cap assembly.

FIG. 3 is a schematic view of an embodiment of a rotary capping machine.

In the figure:

1. an upper cover shell; 10. an upper communication hole; 2. a lower cover shell; 20. a lower communication hole; 21. a spring seat; 22. a third spring; 23. a sleeve; 24. a guide screw; 3. a cap clamping head; 30. covering the colloid; 31. a card slot; 32. an abutting surface; 33. a guide key; 4. a drive assembly; 40. a drive rod; 401. a convex column; 41. a first link; 410. a convex portion; 42. a second link; 420. an abutting portion; 43. a first spring; 44. a first adjusting nut; 45. a second spring; 46. a second adjusting nut; 5. connecting the cover shell; 50. a guide hole; 6. a rotating device; 7. a first push rod; 8. a second push rod.

Detailed Description

In order to make the technical problems solved, the technical solutions adopted and the technical effects achieved by the present invention clearer, the technical solutions of the present invention are further described below by way of specific embodiments with reference to the accompanying drawings.

As shown in fig. 1 to 3, the cap grabbing device provided by the invention is used for grabbing a bottle cap and comprises an upper cap shell 1, a lower cap shell 2, a cap grabbing component and a driving component 4, wherein the upper cap shell 1 is provided with an upper communicating hole 10 penetrating through the upper surface and the lower surface of the upper cap shell, the lower cap shell 2 is provided with a lower communicating hole 20 penetrating through the upper surface and the lower surface of the lower cap shell, the upper cap shell 1 and the lower cap shell 2 are elastically connected along the vertical direction, the cap grabbing component comprises three cap clamping heads 3, the three cap clamping heads 3 are uniformly and annularly arranged on the lower communicating hole 20, and the first ends of the three capping heads 3 extend from the lower end of the lower communication hole 20 to the outside of the lower cap shell 2, the driving assembly 4 comprises two first connecting rods 41 and two second connecting rods 42 which can move relatively, the first connecting rods 41 and the second connecting rods 42 penetrate through the upper communication hole 10 and the lower communication hole 20 and are connected with the three capping heads 3, and the first connecting rods 41 and the second connecting rods 42 can drive the three capping heads 3 to clamp or release the cap. It can be understood that the cap grabbing component consists of three cap clamping heads 3, the three cap clamping heads 3 are arranged in a ring shape along the horizontal direction, and the driving component 4 drives the three cap adding heads 3 to mutually approach or mutually separate, so that the bottle cap is clamped or loosened. When the bottle cap is clamped, the three cap clamping heads 3 are respectively positioned on the periphery of the bottle cap, the axis of the bottle cap is coincided with the axis of the cap grabbing assembly through the three-point positioning, and the bottle cap is conveniently centered and positioned in the cap screwing operation. Simultaneously, when grabbing behind the bottle lid butt joint bottle lid and bottle, need apply certain pressure to the bottle lid along vertical direction to make the bottle lid be connected with the bottleneck position of bottle, because of adopting elastic connection's mode between upper cover shell 1 and the lower cover shell 2, be provided with the elastic component between the two, accessible elastic component cushions pressure when transmitting pressure, reduces the impact to the bottle lid, and then avoids the bottle lid to take place to warp because of receiving great impact force.

In this embodiment, referring to fig. 1, the upper cover case 1 and the lower cover case 2 are of a revolving structure for mounting the grab cover assembly and the driving assembly 4, and both of them serve as a mounting base for supporting. The upper and lower cover cases 1 and 2 are respectively provided with upper and lower communication holes 10 and 20 penetrating the upper and lower surfaces, the driving unit 4 and the gripper cover assembly are installed in the upper and lower communication holes 10 and 20, and the upper and lower communication holes 10 and 20 are provided with corresponding steps according to installation needs. Upper cover shell 1 and lower cover shell 2 are along the coaxial setting of vertical direction, upper cover shell 1 and 2 intervals of lower cover shell, and still be provided with between upper cover shell 1 and the lower cover shell 2 and be connected the lid shell 5, spring holder 21 and sleeve 23, the both ends of connecting lid shell 5 overlap respectively and establish the lower extreme at upper cover shell 1 and the upper end of lower cover shell 2, wherein, the lower extreme threaded connection of connecting lid shell 5 and upper cover shell 1, the upper end of connecting lid shell 5 and lower cover shell 2 passes through guide key 33 sliding connection, so that can follow vertical direction relative movement between upper cover shell 1 and the lower cover shell 2, and can follow horizontal direction transmission moment of torsion. The spring seat 21 is installed at the upper end of the lower cover case 2, and is used for installing a spring, and the spring seat 21 is provided with an installation groove corresponding to the spring. The sleeve 23 is provided between the spring seat 21 and the upper cover case 1, and a gap is provided between the sleeve 23 and the upper cover case 1. A third spring 22 is arranged between the spring seat 21 and the upper cover shell 1, so that the upper cover shell 1 and the lower cover shell 2 are elastically connected through the third spring 22. When downward pressure is applied to the bottle cap, the upper cap shell 1 and the lower cap shell 2 approach each other and compress the third spring 22, and the upper cap shell 1 abuts against the upper end of the sleeve 23. When the pressure is removed, the upper cover case 1 and the sleeve 23 are separated by the elastic force of the third spring 22. The driving assembly 4 includes a driving rod 40, a first link 41 and a second link 42, the driving rod 40 is connected with an external power device, and the driving rod 40 provides axial thrust to the first link 41 and the second link 42 to move the first link 41 and the second link 42 in a vertical direction. The driving rod 40 is provided with a second adjusting nut 46, and the moving stroke of the driving rod 40 can be adjusted through the second adjusting nut 46. The first link 41 is provided with a through hole for passing the second link 42, and the lower end of the first link 41 is provided with a protrusion 410. The second link 42 is inserted into the through hole, the upper end of the second link 42 is located in the through hole, the lower end of the second link 42 extends out from the lower end of the first link 41, and the lower end of the second link 42 is provided with an abutting portion 420. One end of the driving rod 40 close to the first link 41 is provided with a convex column 401, and a step surface is formed at the intersection of the convex column 401 and the end of the first link 41. The boss 401 is inserted into the through hole at the upper end of the first link 41 and spaced from the second link 42 in the through hole, a first spring 43 is arranged between the boss 401 and the second link 42, and the first spring 43 is continuously in a compressed state, so that the elastic force of the first spring 43 can drive the abutting part 420 of the second link 42 to abut against the abutting surface 32 of the capping head 3. The cap clamping heads 3 are arranged in the lower communication hole 20 of the lower cap shell 2, and the three cap clamping heads 3 are distributed annularly, so that the bottle cap can be clamped between the three cap clamping heads 3. The first end of the cap clamping head 3 extends out of the lower communicating hole 20, a cap clamping colloid 30 is arranged on the contact surface of the first end of the cap clamping head 3 and the bottle cap, the cap clamping colloid 30 can be made of rubber materials and plastic materials, the protective effect on the bottle cap is achieved, meanwhile, the friction force between the cap clamping head 3 and the bottle cap is increased, and the torque transmission is facilitated. The second end of the cap clamping head 3 is provided with a clamping groove 31, and the convex part 410 on the first connecting rod 41 is connected with the clamping groove 31 and used for transmitting power. When the bottle cap is loosened, the driving rod 40 moves downwards, the convex column 401 compresses the first spring 43, the stepped surface at the lower end of the driving rod 40 is abutted to the upper end surface of the first connecting rod 41 and pushes the first connecting rod 41 to move downwards, at this time, the first connecting rod 41 can move downwards relative to the second connecting rod 42, and the first connecting rod 41 drives the cap clamping head 3 to rotate around the joint of the abutting surface 32 and the second connecting rod 42 through the convex part 410, so that the three cap clamping heads 3 are far away from each other, and the release of the cap clamping assembly is realized. When the bottle cap is clamped, the driving rod 40 moves upwards, the step surface is separated from the upper end face of the first connecting rod 41, the convex column 401 moves upwards and can continue to compress the first spring 43, the second connecting rod 42 is enabled to be abutted against the abutting surface 32 of the cap clamping head 3, the first connecting rod 41 moves upwards under the elastic force action of the second spring 45, and the cap clamping head 3 is driven to rotate around the connecting position of the abutting surface 32 and the second connecting rod 42 through the convex part 410, so that the three cap clamping heads 3 are close to each other, and the clamping of the cap clamping assembly is realized. Be provided with guide screw 24 between lower cover shell 2 and the double-layered capping head 3, lower cover shell 2 is provided with the screw with guide screw 24 complex, is provided with the guide way that supplies guide screw 24 to peg graft on the double-layered capping head 3, and the guide way sets up along vertical direction, and guide screw 24 installs and pegs graft and the guide way in the screw and guide screw 24's one end, and guide screw 24 can follow the vertical motion of guide way. This configuration enables the chuck head 3 to move up and down relative to the lower cap shell 2 while allowing torque to be transmitted through the guide screws 24 to allow the gripper cover assembly to rotate synchronously with the lower cap shell 2 to screw the bottle cap onto the bottle body.

It should be noted that the first end and the second end of the capping head 3 are disposed opposite to each other.

Specifically, referring to fig. 2, a clamping groove 31 is disposed at a second end of the capping head 3, an abutting surface 32 forming an included angle with the horizontal plane is disposed between the first end and the second end of the capping head 3, the first connecting rod 41 is provided with a through hole communicating two ends thereof, the second connecting rod 42 is disposed in the through hole in a penetrating manner, a lower end of the second connecting rod 42 is located outside the through hole, a protruding portion 410 is disposed at a lower end of the first connecting rod 41, the first connecting rod 41 and the capping head are connected through the protruding portion 410 and the clamping groove 31 in an inserting manner, an abutting portion 420 matched with the abutting surface 32 is disposed at a lower end of the second connecting rod 42, and the second connecting rod 42 and the capping head 3 are abutted against the abutting. In this embodiment, the first link 41 and the second link 42 are respectively connected to the second end and the middle position of the capping head 3, the abutting surface 32 located at the middle position of the capping head serves as a rotation fulcrum of the capping head 3, and when the first link 41 drives the second end of the capping head 3 to move up and down, the first end of the capping head 3 can rotate around the connecting position of the abutting surface 32 and the second link 42 under the action of the inclined abutting surface 32, so that the three capping heads 3 are far away from or close to each other, and the bottle cap can be loosened and clamped.

Specifically, the upper end of the second link 42 is located in the through hole of the first link 41, the upper end of the first link 41 is provided with the driving rod 40, one end of the driving rod 40 is inserted into the through hole, the first spring 43 is arranged between the driving rod 40 and the second link 42, the driving rod 40 can compress the first spring 43 and enable the second link 42 to abut against the cap clamping head 3, and the driving rod 40 can selectively abut against the upper end of the first link 41, so that the driving rod 40 can drive the first link 41 and the second link 42 to move along the vertical direction. In this embodiment, through setting up the through-hole on first connecting rod 41, second connecting rod 42 wears to locate in the through-hole, and the lower extreme of first connecting rod 41 and the lower extreme of second connecting rod 42 are connected with draw-in groove 31 and the butt face 32 of pressing from both sides lid head 3 respectively, the one end that actuating lever 40 is close to the through-hole is provided with projection 401 and step face, projection 401 inserts the through-hole and compresses first spring 43, actuating lever 40 downstream can drive two connecting rod motions simultaneously, and accessible first spring 43 makes there is relative motion between two connecting rods, and then drive presss from both sides lid head 3 and rotate, realize grabbing unclamping and pressing from both sides tightly of lid subassembly.

Specifically, the upper end of the first link 41 is sleeved with a first adjusting nut 44, a second spring 45 is disposed between an end surface of the lower cover case 2 close to the upper cover case 1 and the first adjusting nut 44, when the first link 41 moves downward, the first adjusting nut 44 can compress the second spring 45, and the second spring 45 can drive the first link 41 to move upward. In this embodiment, when the cover gripping assembly is released, the driving rod 40 moves downward, and the step surface thereof abuts against the first link 41 and pushes the cover gripping head 3 to rotate to the release position. When the cap clamping assembly is clamped, the driving rod 40 moves upwards, the step surface of the driving rod is separated from the first connecting rod 41, the elastic force of the second spring 45 pushes the first adjusting nut 44 to move upwards, the first connecting rod 41 further moves upwards and drives the cap clamping heads 3 to rotate to the clamping position, and the three cap clamping heads 3 approach to each other and clamp the cap. At this time, the clamping force of the three capping heads 3 on the bottle cap comes from the elastic force of the second spring 45, and the compression amount of the second spring 45 can be changed by adjusting the first adjusting nut 44, so as to adjust the clamping force of the capping heads 3 on the bottle cap. This structure provides the clamp force for grabbing the lid subassembly through setting up second spring 45, is favorable to protecting the bottle lid, avoids the too big bottle lid deformation that causes of clamp force.

Specifically, a third spring 22 is disposed between the upper cover shell 1 and the lower cover shell 2, and the upper cover shell 1 and the lower cover shell 2 can compress the third spring 22 and selectively abut one end of the upper cover shell 1 opposite to the lower cover shell 2. In this embodiment, the upper cover case 1 and the lower cover case 2 are elastically connected by a third spring 22. When the cap grabbing device clamps the cap, the cap is transferred to the bottle body, the cap is opposite to the bottle opening on the bottle body, and downward pressure is applied to enable the cap to be sleeved on the bottle opening. When pressure is applied, the upper cover shell 1 moves downwards and compresses the third spring 22, the lower cover shell 2 is driven to move downwards, the lower cover shell 2 is abutted against the grabbing cover component and drives the grabbing cover component to move downwards, and the bottle cap is sleeved on the bottle opening. According to the structure, the third spring 22 is arranged to enable the upper cover shell 1 and the lower cover shell 2 to be elastically connected, so that a buffering effect is achieved when power is transmitted downwards, and the bottle cover deformation caused by overlarge impact force can be avoided.

Specifically, this grab and cover device is still including connecting lid shell 5, the relative one end of upper cover shell 1 and lower cover shell 2 is connected with connecting lid shell 5 respectively, it is provided with the internal thread to connect the one side that lid shell 5 is close to upper cover shell 1, upper cover shell 1 is provided with the external screw thread with female screw-thread fit, it is fixed through internal thread and external screw thread connection between connection lid shell 5 and the upper cover shell 1, it is provided with guiding hole 50 to connect one side that lid shell 5 is close to lower cover shell 2, lower cover shell 2 is provided with the direction key 33 with guiding hole 50 complex, direction key 33 pegs graft with guiding hole 50 and can slide along the length direction of guiding hole 50, connect through guiding hole 50 and direction key 33 sliding connection between lid shell 5 and the lower cover shell 2. In this embodiment, connect lid shell 5 and be the tubular structure, connect the both ends of lid shell 5 and establish the relative one end in upper cover shell 1 and lower cover shell 2 respectively the cover. The guide key 33 slides in the vertical direction along the guide hole 50, and the guide key 33 is annularly provided along the peripheral portion of the lower cover case 2 and is mounted on the lower cover case 2 by fastening screws. The guide key 33 is provided to allow relative movement between the lower cap shell 2 and the upper cap shell 1 in the vertical direction, while the upper cap shell 1 can transmit torque to the lower cap shell 2 through the guide key 33.

Specifically, referring to fig. 2, a capping colloid 30 is disposed on a side surface of the capping head 3 facing the bottle cap, the capping colloid 30 is disposed in cooperation with the bottle cap, and the hardness of the capping colloid 30 is less than that of the bottle cap. It can be understood that the capping colloid 30 is disposed on the contact surface between the capping head 3 and the bottle cap, and the capping colloid 30 is made of an elastic rubber material, so as to facilitate gripping the bottle cap and improve the stability of gripping the bottle cap.

The remarkable effects of the embodiment are as follows: through set up three press from both sides the lid 3 in the annular on grabbing the lid subassembly, be favorable to making the axis of grabbing the lid subassembly and the axis coincidence of bottle lid, be convenient for carry out centering location to the bottle lid. Meanwhile, the upper cover shell 1 and the lower cover shell 2 are elastically connected through the third spring 22, and the buffer effect is achieved by applying pressure downwards, so that the bottle cap is prevented from being deformed by large impact force, and the bottle cap centering device has the characteristics of conveniently centering and positioning the bottle cap and guaranteeing the quality of the bottle cap.

The rotary cap screwing machine comprises the cap grabbing device, the lifting device and the rotating device 6, the lifting device is connected with a driving rod 40 of the cap grabbing device, the lifting device can drive the driving rod 40 to move in the vertical direction, the rotating device 6 is connected with the upper cover shell 1, and the rotating device 6 can drive the cap grabbing device to horizontally rotate around the axis of the cap grabbing device. In this embodiment, the lifting device is used for driving the cap grabbing device to move in the vertical direction, and the rotating device 6 is used for driving the cap grabbing device to rotate around the axis of the cap grabbing device in the horizontal direction. The cover grabbing device grabs the bottle cover and rotates the bottle cover along the horizontal plane, so that the bottle cover is in threaded connection with the bottle body.

Specifically, referring to fig. 3, the lifting device includes a first driving member for driving the upper and lower cover cases 1 and 2 to move in the vertical direction, and a second driving member for driving the driving lever 40 to move in the vertical direction. In this embodiment, the first driving member includes a driving cylinder and a first push rod 7 connected to the driving cylinder, and the driving cylinder drives the first push rod 7 to move in the vertical direction. The first push rod 7 is connected with a driving rod 40 of the cover grabbing device, and then the driving rod 40 is driven to move through the driving air cylinder and the first push rod 7, so that clamping and loosening of the cover grabbing device are achieved. The second driving piece comprises a cam and a second push rod 8, the second push rod 8 is movably connected with the cam, a guide groove matched with the motion track of the second push rod 8 is formed in the cam, and the second push rod 8 is arranged in the guide groove in a rolling mode. The cam can drive the second push rod 8 to move along the vertical direction when rotating. The second push rod 8 is connected with the upper cover shell 1 of the cover grabbing device, the second push rod 8 drives the upper cover shell 1 and the lower cover shell 2 to move along the vertical direction, downward pressure is applied to the bottle cover, and the bottle cover is in butt joint with the bottle opening.

Specifically, the rotating device 6 is arranged between the lifting device and the cover grabbing device, the rotating device 6 comprises a first shell and a second shell which can rotate relatively, the first shell and the second shell can rotate coaxially, the first shell is fixedly connected with the lifting device, the second shell is fixedly connected with the cover grabbing device, and the cover grabbing device is driven to rotate around the axis of the cover grabbing device through relative rotation between the two shells.

Specifically, the cover grabbing device is multiple, and the multiple cover grabbing devices are annularly arranged in the horizontal direction. When can understand, set up a plurality of lid devices of grabbing and can snatch a plurality of bottle lids simultaneously, improve packing operation efficiency.

The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description of the present invention, which should be interpreted as a limitation.