Automatic capping apparatus for juice cans

Abstract

The application discloses automatic capping equipment for fruit juice canning and belongs to the technical field of fruit juice canning and capping, which comprises a supporting seat, a capping mechanism, a cover pressing mechanism and an adjusting mechanism, two symmetrical limiting strips are movably penetrated through the supporting seat, and the two limiting strips are symmetrically fixed to the upper surface of a supporting frame; the supporting frame is arranged on the inner side of the supporting seat, the capping mechanism is movably penetrated through the supporting frame and is used for screwing the bottle cap of the canned fruit juice; the upper surface of the supporting seat is fixedly provided with a gas cylinder, and the lower end of the gas cylinder is connected with the cover pressing mechanism. The application can automatically adjust the distance of the four capping discs according to the size of the bottle cap, so that the four capping discs can be in the proper position outside the bottle cap when contacting the bottle cap, thereby helping to efficiently and stably screw the bottle cap of different sizes. In addition, the height of the four capping discs can be automatically adjusted, so that the four capping discs can be adapted to the canned bottles of different sizes.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of canning capping, in particular to an automatic capping equipment for juice canning. BACKGROUND

[0002] In the early production process of juice canning, the capping work is mainly completed by manual operation. The manual capping efficiency is low. Because the physical strength and energy of human beings are limited, long-time work is easy to cause fatigue, which leads to the slow capping speed. Moreover, it is difficult to ensure that each bottle cap is tightened to the appropriate degree by manual operation. Over-loose or over-tight bottle caps may occur. Over-loose bottle caps are easy to leak during storage and transportation, which causes product loss and pollution. Over-tight bottle caps may damage the bottle or the cap, which affects the appearance of the product and the convenience of subsequent opening.

[0003] The progress of mechanical manufacturing technology provides a basis for the development of automatic capping equipment for juice canning. High-precision machining technology enables the parts of the equipment to meet higher precision requirements, thereby ensuring the stability and reliability of the equipment operation.

[0004] However, the existing automatic capping equipment for juice canning still has the following technical problems when in use, such as:

[0005] 1. When the existing automatic capping equipment for juice canning is in use, four capping wheels generally rotate in the same direction, and the four capping wheels are divided into two groups. The two groups of capping wheels are close to each other and clamp the bottle cap to tighten the bottle cap. However, the capping wheels in the same group cannot approach or move away from each other, which limits the use thereof. For example, when the capping wheels contact with small or large bottle caps, it cannot be ensured that the capping wheels are within the appropriate range outside the bottle cap, which is not conducive to the stable and effective tightening of the bottle cap.

[0006] 2. When the existing automatic capping equipment for juice canning is in use, the four capping wheels cannot be self-adaptively adjusted in height. This makes it necessary to manually adjust the height of the capping wheels when the specifications of the canned bottles are changed, thereby reducing the production efficiency.

[0007] Therefore, there is a need for an automatic capping equipment for juice canning to solve the above problems. SUMMARY

[0008] The present application relates to the technical field of canning capping, in particular to an automatic capping equipment for juice canning.

[0009] To achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0010] Automatic screwing equipment for juice canning, including support seat, screwing mechanism, cover pressing mechanism and adjusting mechanism, the support seat is provided with two symmetrical limiting strips, and the two limiting strips are fixedly connected to the upper surface of the support frame, the support frame is arranged on the inner side of the support seat, and the screwing mechanism is arranged on the support frame, which is used for tightening the bottle cap of the canned juice, the upper surface of the support seat is fixedly provided with a cylinder, and the lower end of the cylinder is connected with the cover pressing mechanism, which is used for pressing the bottle cap of the canned juice, the screwing mechanism is connected with the cover pressing mechanism through the adjusting mechanism, and the cover pressing mechanism is fixedly connected with the lower surface of the support frame through the fixing strip, which is used for adjusting the position of the screwing mechanism, so as to screw the bottle cap of the canned juice bottle with different shapes.

[0011] Preferably, the screwing mechanism comprises two movable pipes and four sliding grooves, the four sliding grooves are equiangularly distributed on the lower surface of the support frame, and the sliding grooves penetrate the inner and outer sides of the support frame, each sliding groove is rollingly connected with a group of roller assemblies, each group of roller assemblies is fixedly connected to the outer side of the corresponding support sleeve, the inner side of the support sleeve is movably penetrated by the upper end of the corresponding movable pipe, the lower end of the movable pipe movably extends into the upper end of a connecting rod, the upper end of the connecting rod is coaxially provided with a follow-up hole, the follow-up hole movably extends into the lower end of a follow-up rod, the upper end of the follow-up rod is coaxially fixedly connected to the inner side of the lower end of the movable pipe, the lower end of the connecting rod is coaxially fixedly connected with a screwing disc, the lower end of the connecting rod is screwedly connected with an adjusting sleeve, and the adjusting sleeve is bearingly connected to the outer side of the lower end of the movable pipe.

[0012] Preferably, the follow-up hole and the follow-up rod are prismatic structures that match each other, which are used for limiting the rotation of the connecting rod.

[0013] Preferably, the outer side of the screwing disc is provided with a rubber sleeve, which is used for increasing the friction between the screwing disc and the bottle cap of the canned juice bottle.

[0014] Preferably, the cover pressing mechanism comprises a support pipe and a spring, the support pipe is coaxially fixedly connected to the lower end of the cylinder, and the support pipe movably penetrates the support frame, the lower end of the support pipe movably extends into the upper end of a support rod, the lower end of the support rod is bearingly connected with a cover pressing disc, a spring is arranged between the upper end of the support rod and the inner top end of the support pipe, the upper end of the support rod is coaxially provided with a limiting hole, the limiting hole movably extends into the lower end of a limiting rod, the upper end of the limiting rod is coaxially fixedly connected to the inner top end of the support pipe, and the spring is arranged on the outer side of the limiting rod, the lower end of the support rod is coaxially fixedly connected with an X-shaped support frame, and four displacement through grooves are symmetrically arranged on the X-shaped support frame about the axis of the X-shaped support frame.

[0015] Preferably, the four displacement slots are arranged in a one-to-one correspondence with the four sliding grooves, and each displacement slot has a corresponding movable tube that movably passes through it. The outer diameter of the part of the movable tube that passes through the displacement slot matches the inner diameter of the displacement slot, which is used to limit the movement path of the movable tube.

[0016] Preferably, the fixing strip is fixedly connected to the X-shaped support frame at equal angles to stabilize the connection between the support rod and the support frame.

[0017] Preferably, the adjustment mechanism includes a first slide groove and a support shaft. Four first slide grooves are evenly distributed on the lower surface of the support frame, and each slide groove penetrates both the inner and outer sides of the support frame. The four first slide grooves and four second slide grooves are arranged in a star-shaped pattern. Each first slide groove is also connected to a support sleeve via a roller assembly. The support sleeve within each first slide groove is penetrated by a corresponding support shaft bearing. The outer upper and lower ends of the support shaft are connected to the upper and upper-middle ends of the movable tubes via an upper belt drive structure and a lower belt drive structure, respectively. Only one of the four movable tubes has a servo motor mounted on its upper end, and the upper end of the servo motor is fixed... A limiting block is fixedly connected, and the limiting block is slidably connected in a limiting groove. The limiting groove is set on the upper surface of the support frame and extends through the inner and outer sides of the support frame. The four sides of the support frame are provided with mounting holes, and the horizontal end of the corresponding cross support frame is movably inserted into the mounting hole on each side. The upper and lower ends of the support shaft are fixedly connected with follower blocks, and each follower block is provided with an inclined groove. One end of the corresponding U-shaped frame is slidably connected in the inclined groove, and the other end of the U-shaped frame is fixedly connected to the outside of the support tube. The follower block on the same side is fixedly connected to the vertical end of the corresponding cross support frame.

[0018] Preferably, both the upper belt drive structure and the lower belt drive structure are composed of a drive belt and a drive disc. The drive discs on the upper belt drive structure and the lower belt drive structure are coaxially and fixedly connected to the movable tube, and the drive discs on the upper belt drive structure and the lower belt drive structure are penetrated by the support shaft bearing.

[0019] Preferably, a reset mechanism is provided in both slide groove one and slide groove two. The reset mechanism includes a positioning shaft, a positioning plate, a positioning tube and a second spring. Each support sleeve is fixedly connected to one end of a corresponding positioning shaft, and the other end of the positioning shaft extends movably into the inner side of one end of the positioning tube. The positioning tube is fixedly installed in each slide groove one and slide groove two. The positioning plate is coaxially fixedly connected to the outer side of the positioning shaft, and a second spring is provided between the positioning plate in slide groove one or slide groove two and its inner end. The structure formed by the eight sets of positioning shafts and positioning tubes is also distributed in a star shape.

[0020] Compared with the prior art, the automatic capping device for juice cans has the beneficial effects that the automatic capping device for juice cans can not only adaptively adjust the distance of the four capping discs according to the size of the bottle cap, so that the four capping discs can be in the proper position outside the bottle cap when the four capping discs contact the bottle cap, thereby helping to efficiently and stably tighten the bottle cap of different sizes, but also adaptively adjust the height of the four capping discs, so that the four capping discs can adapt to the cans of different sizes.

[0021] 1、Under the action of the cylinder, the capping disc gradually approaches the bottle cap, when it presses the bottle cap and no longer moves, the height of the support frame will also be fixed, at this time, since the support frame is connected with the movable pipe through the roller assembly and the support sleeve, the height of the movable pipe is also fixed, so that the height of the capping disc is fixed, when the capping disc moves, it can contact the bottle cap, thereby adaptively adapting to the cans of different sizes, compared with the previous manual adjustment of the height of the capping disc, time is saved and production efficiency is improved.

[0022] 2、After the capping disc contacts the bottle cap, the cylinder continues to act, the support pipe continues to move downward, so that the support rod gradually moves to the inside of the support pipe, the spring in the support pipe gradually recovers from the stretched state and is compressed, during the downward movement of the support pipe, the U-shaped frame moves downward synchronously, so that under the action of the inclined groove, the four support shafts move close to each other, so that the four capping discs move close to each other, thereby the four capping discs can contact the proper position on the bottle cap of any size, thereby helping to efficiently and stably tighten the bottle cap of different sizes. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a front view structural schematic diagram of the present application;

[0024] Figure 2 It is a bottom view structural schematic diagram of the present application;

[0025] Figure 3 It is a support frame and a limit block connection structure schematic diagram of the present application;

[0026] Figure 4 It is a support frame and a servo motor connection structure schematic diagram of the present application;

[0027] Figure 5 It is a local sectional view connection structure schematic diagram of the present application;

[0028] Figure 6 It is a Figure 5 A point amplification structure schematic diagram of the present application;

[0029] Figure 7 It is a support frame and a cross support frame connection structure schematic diagram of the present application;

[0030] Figure 8 For the present application Figure 7 Point B amplification structure schematic diagram in the present application;

[0031] Figure 9 For the present application movable pipe profile connection structure schematic diagram;

[0032] Figure 10 For the present application Figure 9 Point C amplification structure schematic diagram in the present application;

[0033] Figure 11 For the present application support frame and support sleeve connection structure schematic diagram.

[0034] In the figure: 1, support seat; 2, limit strip; 3, support frame; 4, air cylinder; 5, cross support frame; 6, movable pipe; 7, X-shaped support frame; 8, twist cover disc; 9, cover disc; 10, fixed strip; 11, limit groove; 12, limit block; 13, support pipe; 14, servo motor; 15, upper belt transmission structure; 16, sliding groove one; 17, sliding groove two; 18, displacement through slot; 19, support shaft; 20, support rod; 21, limit hole; 22, limit rod; 23, spring one; 24, lower belt transmission structure; 25, follow-up block; 26, inclined slot; 27, U-shaped frame; 28, mounting hole; 29, roller assembly; 30, support sleeve; 31, connecting rod; 32, adjusting sleeve; 33, follow-up hole; 34, follow-up rod; 35, positioning shaft; 36, positioning disc; 37, positioning pipe; 38, spring two. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0036] Please refer to Figures 1-11 The present application provides the following technical solutions:

[0037] Embodiment one: to solve the problem that the automatic cap twisting equipment for fruit juice cans cannot self-adaptively adjust the height of the cap twisting wheel, the following technical solutions are provided, specifically,

[0038] Automatic screwing equipment for fruit juice canning, including support seat 1, screwing mechanism, cover pressing mechanism and adjusting mechanism, two symmetrical limiting strips 2 are movably penetrated on the support seat 1, and the two limiting strips 2 are symmetrically fixedly connected to the upper surface of the support frame 3, the support frame 3 is arranged on the inner side of the support seat 1, and the screwing mechanism is movably penetrated on the support frame 3, which is used for screwing the bottle cap of canned fruit juice, the upper surface of the support seat 1 is fixedly installed with a pneumatic cylinder 4, and the lower end of the pneumatic cylinder 4 is connected with the cover pressing mechanism, which is used for pressing the bottle cap of canned fruit juice.

[0039] The capping mechanism includes a movable tube 6 and four sliding grooves 17. Four sliding grooves 17 are evenly distributed at angles on the lower surface of the support frame 3, and each sliding groove 17 extends through both the inner and outer sides of the support frame 3. Each sliding groove 17 contains a set of roller assemblies 29, which are symmetrically and fixedly connected to the outer side of the corresponding support sleeve 30. The upper end of the corresponding movable tube 6 extends through the support sleeve 30, and the lower end of the movable tube 6 extends into the upper end of a connecting rod 31. The upper end of the connecting rod 31 has a coaxially arranged follower hole 33, and the lower end of a follower rod 34 extends into the follower hole 33. The upper end of the follower rod 34 is coaxially and fixedly connected to the inner side of the lower end of the movable tube 6. The lower end of the connecting rod 31 is coaxially and fixedly connected to a capping disc 8, and the outer side of the lower end of the connecting rod 31 is threaded with a... Adjusting sleeve 32, with its bearing connected to the outer side of the lower end of movable tube 6, allows the movable tube 6 to rotate via the upper belt drive structure 15 and the lower belt drive structure 24 when the servo motor 14 is running. This, in turn, drives the four capping discs 8 to rotate, thus tightening the bottle caps at the opening of the canned bottle. The follower hole 33 and follower rod 34 are mutually matching prismatic structures used to limit the connecting rod 31, thereby restricting its rotation. Rotating the adjusting sleeve 32 adjusts the position between the connecting rod 31 and the movable tube 6, thereby adjusting the position of the capping discs 8. This prevents the capping discs 8 from being too low when tightening caps on irregularly shaped canned bottles (e.g., triangular prism canned bottles with thinner caps, where tightening the caps would be difficult). (If the height of the capping disc 8 is too low, the triangular prism of the canned bottle will obstruct the contact between the capping disc 8 and the bottle cap.) A rubber sleeve is provided on the outside of the capping disc 8 to increase the friction between the capping disc 8 and the bottle cap of the juice canned bottle. The capping mechanism includes a support tube 13 and a spring 23. The support tube 13 is coaxially fixedly connected to the lower end of the cylinder 4, and the support tube 13 is movably installed through the support frame 3. The upper end of the support rod 20 is movably inserted into the inner side of the lower end of the support tube 13, and the capping disc 9 is connected to the lower end of the support rod 20 by a bearing. A spring 23 is provided between the upper end of the support rod 20 and the inner top end of the support tube 13, and a limit hole 21 is coaxially provided on the upper end of the support rod 20. The lower end of the limit rod 22 is movably inserted into the limit hole 21, and the upper end of the limit rod 22 is coaxially fixedly connected to the limit rod 22. At the inner top of the support tube 13, and with spring 23 located on the outer side of the limiting rod 22, an X-shaped support frame 7 is coaxially fixedly connected to the outer side of the lower end of the support rod 20. Four displacement slots 18 are symmetrically arranged on the X-shaped support frame 7 about its axis. Under the action of the cylinder 4, the support frame 3 and the capping plate 9 move downwards. When the capping plate 9 contacts the bottle cap and applies pressure, it stops moving downwards. At this time, the support frame 3 stops descending synchronously, and the movable tube 6 connected to it via the roller assembly 29 and the support sleeve 30 also stops descending synchronously. This allows the height of the capping plate 8 to perfectly match the height of the bottle cap, ensuring stable contact with the bottle cap after the capping plates 8 approach each other. This helps to adapt to bottles of different heights.The problem of reducing production efficiency caused by manual adjustment is avoided, four displacement through grooves 18 are arranged one by one corresponding to four sliding grooves 17, and a corresponding movable pipe 6 is movably penetrated on each displacement through groove 18, the outer diameter of the part of the movable pipe 6 penetrating the displacement through groove 18 is consistent with the inner diameter of the displacement through groove 18, for limiting the path of the movable pipe 6, and the fixed strip 10 is fixedly connected to the X-shaped support frame 7 at equal angles, for stably connecting the support rod 20 and the support frame 3.

[0040] In order to solve the problem that the automatic cap screwing device for fruit juice cans cannot adjust the distance between the same group of cap screwing wheels, so that the cap screwing wheels cannot contact the bottle cap at the appropriate position, the following technical scheme is provided, specifically, the cap screwing mechanism is connected with the cap pressing mechanism through the adjusting mechanism, and the cap pressing mechanism is fixedly connected with the lower surface of the support frame 3 through the fixed strip 10, for adjusting the position of the cap screwing mechanism, so as to screw the caps of fruit juice cans with different shapes.

[0041] The adjustment mechanism includes four slide grooves 16 and four support shafts 19. Four slide grooves 16 are evenly distributed at an angle on the lower surface of the support frame 3, and each slide groove 16 extends through both the inner and outer sides of the support frame 3. The four slide grooves 16 and four slide grooves 17 are arranged in a star-shaped pattern. Each slide groove 16 is connected to a support sleeve 30 via a roller assembly 29. The support sleeve 30 within the slide groove 16 is pierced by the corresponding support shaft 19 bearing. The outer upper and lower ends of the support shaft 19 are connected to the upper and upper-middle ends of the movable tube 6 via an upper belt drive structure 15 and a lower belt drive structure 24, respectively. Only one of the four movable tubes 6 has a servo motor 14 mounted on its upper end, and a limit block 12 is fixedly connected to the upper end of the servo motor 14. 2. The cylinder 4 is slidably connected to the limiting groove 11, which is located on the upper surface of the support frame 3 and extends through both the inner and outer sides of the support frame 3. Each of the four sides of the support frame 3 has a mounting hole 28, and the horizontal end of the corresponding cross support frame 5 is movably inserted into each mounting hole 28. The upper and lower ends of the support shaft 19 are fixedly connected to follower blocks 25, and each follower block 25 has a slanted groove 26. One end of a corresponding U-shaped frame 27 is slidably connected to the slanted groove 26, and the other end of the U-shaped frame 27 is fixedly connected to the outside of the support tube 13. The follower block 25 on the same side is fixedly connected to the vertical end of the corresponding cross support frame 5. After the support frame 3 stops descending, the cylinder 4 continues to operate, supporting... As tube 13 continues to descend, the corresponding support rod 20 gradually moves into the support tube 13, causing spring 23 to return from its stretched state and gradually compress. During the descent of the support tube 13, the U-shaped frame 27 moves within the inclined groove 26, causing the four support shafts 19 to approach each other, which in turn causes the four movable tubes 6 to approach each other, thus bringing the four capping discs 8 closer together. This ensures that the four capping discs 8 can contact the bottle cap at the appropriate position, guaranteeing a stable and effective tightening of the bottle cap. Both the upper belt drive structure 15 and the lower belt drive structure 24 consist of a drive belt and a drive disc. The drive discs on the upper belt drive structure 15 and the lower belt drive structure 24 are coaxially and fixedly connected to the movable tubes 6. The transmission disc on the lower belt drive structure 24 and the 15th belt drive structure 24 are pierced by the bearing of the support shaft 19. The first slide 16 and the second slide 17 are equipped with a reset mechanism. The reset mechanism includes a positioning shaft 35, a positioning disc 36, a positioning tube 37 and a second spring 38. Each support sleeve 30 is fixedly connected to one end of the corresponding positioning shaft 35, and the other end of the positioning shaft 35 extends movably into the inner side of one end of the positioning tube 37. The positioning tube 37 is fixedly installed in each first slide 16 and second slide 17. The positioning disc 36 is coaxially fixedly connected to the outer side of the positioning shaft 35, and a second spring 38 is provided between the positioning disc 36 in the first slide 16 or the second slide 17 and its inner end. The structure formed by the 8 sets of positioning shafts 35 and positioning tubes 37 is also distributed in a star shape.

[0042] Those aspects of the description which are not otherwise fully described in detail are deemed to be part of the prior art to those skilled in the art.

[0043] While embodiments of the application have been shown and described, it is to be understood that various other modifications can be made by those skilled in the art without departing from the spirit and scope of the present application, which is defined by the appended claims and their equivalents.

Claims

1. An automatic capping device for juice bottling, comprising a support base (1), a capping mechanism, a capping mechanism, and an adjusting mechanism, characterized in that: Two symmetrical limiting strips (2) are movably connected through the support base (1), and the two limiting strips (2) are symmetrically fixedly connected to the upper surface of the support frame (3). The support frame (3) is located inside the support base (1), and a screw-on mechanism is movably connected through the support frame (3) for screwing on the cap of the canned juice. A cylinder (4) is fixedly installed on the upper surface of the support base (1), and a capping mechanism is connected to the lower end of the cylinder (4) for pressing the cap of the canned juice. The screw-on mechanism is connected to the capping mechanism through an adjustment mechanism, and the capping mechanism is fixedly connected to the lower surface of the support frame (3) through a fixing strip (10) for adjusting the position of the screw-on mechanism so as to screw on juice cans of different shapes. The capping mechanism includes a movable tube (6) and a second slide groove (17). Four slide grooves (17) are distributed at equal angles on the lower surface of the support frame (3), and the slide grooves (17) penetrate the inner and outer sides of the support frame (3). Each slide groove (17) is connected to a set of roller assemblies (29), and each set of roller assemblies (29) is symmetrically fixed to the outside of the corresponding support sleeve (30). The upper end of the corresponding movable tube (6) is movably passed through the support sleeve (30), and the lower end of the movable tube (6) is movably inserted into the upper end of the connecting rod (31). The lower end of the connecting rod (31) is coaxially fixed to the capping disc (8). The capping mechanism includes a support tube (13) and a spring (23). The support tube (13) The support tube (13) is coaxially fixed to the lower end of the cylinder (4), and the support tube (13) is movably connected through the support frame (3). The upper end of the support rod (20) is movably inserted into the inner side of the lower end of the support tube (13), and the lower end of the support rod (20) is connected to the bearing plate (9). The outer side of the lower end of the support rod (20) is coaxially fixed to the X-shaped support frame (7). The fixing strip (10) is fixedly connected to the X-shaped support frame (7) at equal angles to stabilize the connection between the support rod (20) and the support frame (3). The adjustment mechanism includes a slide groove (16) and a support shaft (19). The four slide grooves (16) are distributed at equal angles on the lower surface of the support frame (3), and the slide grooves (16) penetrate the inner and outer sides of the support frame (3). The slide is set on the side, and each slide (16) is also connected to the support sleeve (30) through the roller assembly (29). The support sleeve (30) in the slide (16) is pierced by the corresponding support shaft (19) bearing. The upper outer side and lower outer side of the support shaft (19) are connected to the upper end and middle upper end of the movable tube (6) through the upper belt drive structure (15) and the lower belt drive structure (24) respectively. The upper end and lower end of the support shaft (19) are fixedly connected to the follower block (25), and each follower block (25) is provided with a slant groove (26). One end of the corresponding U-shaped frame (27) is slidably connected in the slant groove (26), and the other end of the U-shaped frame (27) is fixedly connected to the outside of the support tube (13).

2. The automatic capping device for fruit juice bottling according to claim 1, characterized in that: The upper end of the connecting rod (31) is coaxially provided with a follower hole (33), and the lower end of the follower rod (34) extends into the follower hole (33). The upper end of the follower rod (34) is coaxially fixedly connected to the inner side of the lower end of the movable tube (6). The lower outer side of the connecting rod (31) is threadedly connected with an adjusting sleeve (32), and the adjusting sleeve (32) is bearing connected to the outer side of the lower end of the movable tube (6).

3. The automatic capping device for fruit juice bottling according to claim 2, characterized in that: The follower hole (33) and follower rod (34) are prism-shaped structures that fit together, used to limit the connecting rod (31) and thus restrict its rotation.

4. The automatic capping device for fruit juice bottling according to claim 3, characterized in that: A rubber sleeve is provided on the outside of the capping disc (8) to increase the friction between the capping disc (8) and the cap of the juice bottle.

5. The automatic capping device for fruit juice bottling according to claim 4, characterized in that: A spring (23) is provided between the upper end of the support rod (20) and the inner top end of the support tube (13), and a limiting hole (21) is coaxially provided at the upper end of the support rod (20). The lower end of the limiting rod (22) extends movably into the limiting hole (21), and the upper end of the limiting rod (22) is coaxially fixedly connected to the inner top end of the support tube (13). The spring (23) is provided on the outside of the limiting rod (22). Four displacement through slots (18) are symmetrically provided on the X-shaped support frame (7) about its axis.

6. The automatic capping device for fruit juice bottling according to claim 5, characterized in that: The four displacement channels (18) are arranged in a one-to-one correspondence with the four sliding grooves (17), and each displacement channel (18) has a corresponding movable tube (6) that movably passes through it. The outer diameter of the part of the movable tube (6) that passes through the displacement channel (18) matches the inner diameter of the displacement channel (18), which is used to limit the movement path of the movable tube (6).

7. The automatic capping device for fruit juice bottling according to claim 6, characterized in that: The four slides (16) and four slides (17) are arranged in a star shape. Only one of the four movable tubes (6) is equipped with a servo motor (14), and the upper end of the servo motor (14) is fixedly connected to a limit block (12). The limit block (12) is slidably connected in the limit groove (11), and the limit groove (11) is set on the upper surface of the support frame (3). The limit groove (11) penetrates the inner and outer sides of the support frame (3). The four sides of the support frame (3) are provided with mounting holes (28), and the horizontal end of the corresponding cross support frame (5) is movably inserted into the mounting hole (28) on each side. The follower block (25) on the same side is fixedly connected to the vertical end of the corresponding cross support frame (5).

8. The automatic capping device for fruit juice bottling according to claim 7, characterized in that: The upper belt drive structure (15) and the lower belt drive structure (24) are both composed of a drive belt and a drive disc. The drive discs on the upper belt drive structure (15) and the lower belt drive structure (24) are coaxially fixedly connected to the movable tube (6), and the drive discs on the upper belt drive structure (15) and the lower belt drive structure (24) are pierced by the bearing of the support shaft (19).

9. The automatic capping device for fruit juice bottling according to claim 8, characterized in that: Both the first slide (16) and the second slide (17) are equipped with a reset mechanism. The reset mechanism includes a positioning shaft (35), a positioning disc (36), a positioning tube (37), and a second spring (38). Each support sleeve (30) is fixedly connected to one end of its corresponding positioning shaft (35), and the other end of the positioning shaft (35) extends movably into the inner side of one end of the positioning tube (37). The positioning tube (37) is fixedly installed in each first slide (16) and second slide (17). The outer side of the positioning shaft (35) is coaxially fixedly connected to the positioning disc (36), and a second spring (38) is provided between the positioning disc (36) in the first slide (16) or the second slide (17) and its inner end. The structure formed by the eight sets of positioning shafts (35) and positioning tubes (37) is also distributed in a cross shape.

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