Forward and reverse wrapping device and agricultural tire forming machine

Abstract

The utility model provides a forward and reverse wrapping device and a farm tire forming machine. The forward and reverse package device comprises an annular fixing frame, the multiple ring buckling ring assemblies are arranged in the circumferential direction of the fixing frame at intervals, the ring buckling ring assemblies are movably arranged in the radial direction relative to the fixing frame, and the ring buckling ring assemblies are provided with ring buckling ends used for ring buckling; the plurality of positive wrapping finger assemblies are arranged in the circumferential direction of the fixing frame at intervals, the positive wrapping finger assemblies are connected with the inner side of the ring buckling assembly and can move in the radial direction of the fixing frame under the driving of the ring buckling assembly, the positive wrapping finger assemblies can axially move relative to the ring buckling assembly, and each positive wrapping finger assembly comprises a finger-shaped piece; and the driving assembly is in driving connection with the ring buckling assembly and drives the ring buckling assembly to move in the radial direction. The forward and reverse package device solves the problem that in the prior art, time and labor are wasted when the size of a forward and reverse package device of a forming machine is replaced.

Description

Technical Field

[0001] The utility model relates to the field of tire processing and production, and more particularly to an inside-outside wrapping device and an agricultural tire forming machine. Background Art

[0002] A tire forming machine is a special device for laminating, rolling and forming a green tire embryo from film layers during the production of radial tires. The forming machine can be divided into a large-diameter laminating process and a small-diameter laminating process according to the lamination diameter of the cord fabric. The large-diameter laminating process is generally used for two-stage forming machines. The process is that after laminating the cord fabric, the cord fabric hanging on the outside of the drum on both sides is gathered by the inside-out fingers, so that the bead can pass through smoothly and be laminated on the side wall of the drum tile. Then the bladder expands and the carcass cord fabric is turned inside out under the driving force of the boosting ring.

[0003] The inside-outside wrapping device is mainly used for two-stage forming machines to realize the forming production of the carcass cylinder. Since tire factories produce a large number of tire specifications, it is necessary to frequently carry out cross-size production. The existing inside-outside wrapping device includes a fixed structure and replaceable tooling, and each tooling is designed for the production of a tire specification. Therefore, when the forming machine switches the production tire formula parameters and specifications, it is necessary to stop the machine to replace the inside-out finger pieces, bead ring tooling, etc. Each time the machine changes the size level, it is necessary to replace the tooling, which has a large workload, takes a long time and has low efficiency. Especially for large tire equipment such as agricultural tires and engineering tires, replacing the tooling seriously affects the production output. Summary of the Utility Model

[0004] The main purpose of the utility model is to provide an inside-outside wrapping device and an agricultural tire forming machine to solve the problem of time-consuming and laborious size level replacement of the inside-outside wrapping device of the existing forming machine.

[0005] To achieve the above object, according to one aspect of the utility model, there is provided an inside-outside wrapping device, including an annular fixed frame; a plurality of bead ring assemblies, each bead ring assembly is arranged at intervals along the circumferential direction of the fixed frame, the bead ring assembly is radially movable relative to the fixed frame, and the bead ring assembly has a bead ring end for performing bead ring; a plurality of inside-out finger assemblies, each inside-out finger assembly is arranged at intervals along the circumferential direction of the fixed frame, the inside-out finger assembly is connected to the inner side of the bead ring assembly and can move radially along the fixed frame under the drive of the bead ring assembly, the inside-out finger assembly is axially movable relative to the bead ring assembly, the inside-out finger assembly includes a finger piece, the finger piece has a contracted state of being radially retracted limited by the bead ring end and an expanded state of being radially expanded and rotated to avoid the bead ring end, when the inside-out finger assembly moves axially relative to the bead ring assembly, the finger piece switches between the expanded state and the contracted state; a driving assembly, the driving assembly is drivingly connected to the bead ring assembly and drives the bead ring assembly to move radially.

[0006] Further, the buckle ring assembly includes a frame body, which is movably connected to the fixed frame and the positive wrapping finger assembly. The frame body has a driving inclined surface, and the driving inclined surface forms an angle with the axis of the fixed frame. The driving assembly includes a driving member, the output end of the driving member is drivingly connected to the driving inclined surface, and there is a guide rail structure between the output end and the driving inclined surface. The output end is movably arranged along the axis of the fixed frame, and drives the frame body to move radially when moving through the driving inclined surface.

[0007] Further, the driving assembly further includes a transmission member, which is drivingly connected to the driving member and is located between the output end and the guide rail structure. The output end drives the frame body to move radially through the transmission member. The transmission member is annular, and all the driving inclined surfaces are respectively drivingly connected to different positions in the circumferential direction of the transmission member. When the transmission member moves along the axis of the fixed frame, it drives the frame bodies of all the buckle ring assemblies to move radially synchronously.

[0008] Further, a first guiding structure is arranged between the frame body and the fixed frame, and the first guiding structure extends along the radial direction of the fixed frame. A second guiding structure is arranged between the frame body and the positive wrapping finger assembly, and the second guiding structure extends along the axis of the fixed frame.

[0009] Further, the buckle ring assembly further includes a buckle ring stop, which is connected to the frame body and moves synchronously with the frame body. The buckle ring stop has a buckling end, and the buckling end has a concave portion for placing and supporting the steel ring.

[0010] Further, the buckle ring assembly further includes a wear-resistant member, which is arranged on the side of the buckle ring stop facing the finger piece and abuts against the finger piece.

[0011] Further, the buckle ring assemblies are arranged in one-to-one correspondence with the positive wrapping finger assemblies.

[0012] Further, the positive wrapping finger assembly further includes a mounting seat, which is movably connected to the buckle ring assembly, and the finger piece is rotatably connected to the mounting seat; a push rod, which is rotatably connected to the finger piece; an elastic member, which abuts against the push rod and provides an elastic force for driving the finger piece to move to the unfolded state.

[0013] Further, the positive wrapping finger assembly further includes a sliding seat, which abuts against the elastic member. The mounting seat has a sliding groove extending along the axis of the fixed frame, and the sliding seat is movably connected to the sliding groove; an adjusting member, which is movably connected to the mounting seat and abuts against the sliding seat. When the adjusting member acts, it drives the sliding seat to move along the sliding groove to change the initial pre-tightening force of the elastic member.

[0014] According to another aspect of the present invention, a radial tire building machine is provided, which includes the above positive wrapping finger device.

[0015] Applying the technical solution of the present invention, the following technical effects are achieved:

[0016] 1. By driving the radial movement of the retaining ring assembly and the front wrapping finger assembly, the stop diameter of the retaining ring assembly and the diameter of the ring formed by the front wrapping finger assembly can be changed, so as to adapt to tires of different sizes. It is not necessary to stop the machine to replace the front wrapping finger assembly and the retaining ring assembly, etc., which reduces the workload and the time spent on replacing parts, improves the overall production efficiency, and solves the problem of delaying production time due to frequent replacement of tooling in the prior art.

[0017] 2. Since the change range of the stop diameter of the retaining ring assembly and the diameter of the ring formed by the front wrapping finger assembly is related to the radial movement of the retaining ring assembly, and the radial movement of the retaining ring is a continuous movement and can stop at any position within its movement range driven by the driving assembly, the present application can adapt to a variety of tires of different sizes, not limited to one or two, and has a wide application range.

[0018] 3. The wear-resistant part plays a protective role. During the operation of the retaining ring assembly, there is a need for repeated relative movement with the tire, which will cause wear to the part of the retaining ring assembly in contact with the tire. After the wear reaches a certain level, it is necessary to replace the retaining ring assembly. Therefore, the retaining ring assembly also includes a wear-resistant part. The wear-resistant part is used to contact the tire instead of the rest of the retaining ring assembly. In this way, only the wear-resistant part wears when there is wear, thereby reducing the wear of the retaining ring assembly. When the wear reaches the maximum level, only the wear-resistant part needs to be replaced, which reduces the difficulty of replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The schematic diagrams in the specification that form a part of the present application are used to provide a further understanding of the present utility model. The schematic embodiments and descriptions thereof of the present utility model are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0020] Figure 1 is the overall structural schematic diagram of the front and back wrapping device provided by the present application;

[0021] Figure 2 is the front view of the front and back wrapping device provided by the present application;

[0022] Figure 3 is the cross-sectional view of the front and back wrapping device provided by the present application with the maximum specification and the front wrapping fingers retracted;

[0023] Figure 4 is the cross-sectional view of the front and back wrapping device provided by the present application with the minimum specification and the front wrapping fingers retracted;

[0024] Figure 5 is the structural schematic diagram of the retaining ring assembly of the front and back wrapping device;

[0025] Figure 6 is the cross-sectional view of the front and back wrapping device provided by the present application with the minimum specification and the front wrapping fingers extended;

[0026] Figure 7 It is a schematic structural diagram of the positive wrapping finger assembly of the front and back wrapping device.

[0027] Among them, the above-mentioned drawings include the following reference numerals:

[0028] 1. Fixed frame; 2. Buckle ring assembly; 21. Frame body; 211. Driving inclined surface; 22. Guide rail structure; 23. First guiding structure; 24. Second guiding structure; 25. Buckle stop; 26. Wear-resistant part; 3. Positive wrapping finger assembly; 31. Positive wrapping finger; 32. Mounting seat; 33. Push rod; 34. Elastic part; 35. Slide seat; 36. Adjusting part; 4. Driving assembly; 41. Transmission part. Detailed implementation manners

[0029] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The following will describe the present utility model in detail with reference to the drawings and in combination with the embodiments.

[0030] It should be pointed out that, unless otherwise specified, all technical and scientific terms used in the present application have the same meanings as those commonly understood by those of ordinary skill in the technical field to which the present application belongs.

[0031] In the present utility model, in the case of no contrary description, the orientation words such as "upper, lower, top, bottom" are usually in the direction shown in the drawings, or in the vertical, perpendicular or gravity direction of the component itself; similarly, for the convenience of understanding and description, "inner, outer" refer to the inner and outer of the contour of each component itself, but the above orientation words are not used to limit the present utility model.

[0032] In order to solve the problem that in the current technology, the tooling needs to be replaced every time the tire size is changed in the front and back wrapping device, with a large workload, long time and low efficiency, the present application provides a front and back wrapping device and a radial tire building machine, which change the diameters of the buckle ring assembly and the positive wrapping finger assembly through the driving assembly to adapt to tires of different sizes.

[0033] Embodiment 1

[0034] A front and back wrapping device, see Figures 1 to 7, including an annular fixing frame 1, a plurality of buckle ring components 2, a plurality of positive wrapping finger components 3 and a driving component 4. Each buckle ring component 2 is arranged at intervals along the circumferential direction of the fixing frame 1. The buckle ring component 2 is radially movably arranged relative to the fixing frame 1. The buckle ring component 2 has a buckle end for buckling the ring. Each positive wrapping finger component 3 is arranged at intervals along the circumferential direction of the fixing frame 1. The positive wrapping finger component 3 is connected to the inner side of the buckle ring component 2 and can move radially along the fixing frame 1 under the drive of the buckle ring component 2. The positive wrapping finger component 3 is axially movably arranged relative to the buckle ring component 2. The positive wrapping finger component 3 includes a finger-shaped piece. The finger-shaped piece has a contracted state in which it is radially gathered and limited by the buckle end and an expanded state in which it radially expands and rotates to avoid the buckle end. When the positive wrapping finger component 3 moves axially relative to the buckle ring component 2, the finger-shaped piece switches between the expanded state and the contracted state. The driving component 4 is drivingly connected to the buckle ring component 2 and drives the buckle ring component 2 to move radially.

[0035] In the large-diameter two-step process for the front and back wrapping of the cord fabric, after the cord fabric is laminated, the positive wrapping finger component 3 is pushed out and opened, and then the buckle ring component 2 moves towards the drum to gather and contract the positive wrapping finger 31. Finally, the bead is buckled on the drum side. There is a certain correlation between the land diameter of the buckle ring component 2 and the diameter of the ring formed by the positive wrapping finger component 3. Therefore, when the tire formula is changed and the bead diameter changes, the land diameter of the buckle ring component 2 and the diameter of the positive wrapping finger component 3 both need to expand or contract to the position of the formula parameters. In order to achieve automatic size change, the positive wrapping finger component 3 and the buckle ring component 2 are made into a structure that can expand or contract together. Driven by the driving component 4, the positive wrapping finger component 3 and the buckle ring component 2 contract or expand together to adapt to tires of different sizes. Then, the power component drives the positive wrapping finger component 3 and the buckle ring component 2 to move axially to perform the front and back wrapping of the tire.

[0036] When the size of the tire to be front and back wrapped changes, it is necessary to adjust the land diameter of the buckle ring component 2 and the diameter of the ring formed by the positive wrapping finger component 3 to make them adapt to the tire after the size change. At this time, the driving component 4 needs to work to drive the buckle ring component 2 to move radially along the fixing frame 1, change the land diameter of the buckle ring component 2, and match the specifications of the tire to be front and back wrapped. Since the positive wrapping finger component 3 is connected to the inner side of the buckle ring component 2, when the land diameter of the buckle ring component 2 changes, the positive wrapping finger component 3 will change accordingly and match the specifications of the tire to be front and back wrapped.

[0037] By driving the radial movement of the snap ring component 2 and the positive wrapping finger component 3 through the driving component 4, the diameter of the rabbet of the snap ring component 2 and the diameter of the ring formed by the positive wrapping finger component 3 can be changed, so as to adapt to tires of different sizes. There is no need to stop the machine to replace the positive wrapping finger component 3 and the snap ring component, etc., which reduces the workload and the time spent on replacing parts, improves the overall production efficiency, and solves the problem of delaying production time due to frequent replacement of tooling in the prior art.

[0038] Since the change range of the diameter of the rabbet of the snap ring component 2 and the diameter of the ring formed by the positive wrapping finger component 3 is related to the radial movement of the snap ring component 2, and the radial movement of the snap ring component 2 is a continuous movement and can stop at any position within its movement range under the drive of the driving component 4, the present application can adapt to a variety of tires of different sizes, not limited to one or two, and has a wide application range.

[0039] Further, the snap ring component 2 includes a frame body 21. The frame body 21 is movably connected to the fixed frame 1 and the positive wrapping finger component 3. The frame body 21 has a driving inclined surface 211. The driving inclined surface 211 forms an angle with the axis of the fixed frame 1. The driving component 4 includes a driving member. The output end of the driving member is drivingly connected to the driving inclined surface 211, and there is a guide rail structure 22 between the output end and the driving inclined surface 211. The output end is movably arranged along the axis of the fixed frame 1 and drives the frame body 21 to move radially through the driving inclined surface 211 when moving.

[0040] By driving the frame body 21 to move along the axial direction of the fixed frame 1 through the driving component 4, since the frame body 21 has a driving inclined surface 211 and the driving inclined surface 211 forms an angle with the axis of the fixed frame 1, through the transmission action of the inclined surface, part of the movement of the frame body 21 in the axial direction of the fixed frame 1 will be converted into the movement of the fixed frame 1 in the radial direction, realizing the movement of the fixed frame 1 in the radial direction of the fixed frame 1.

[0041] After the driving component 4 works, it will drive the output end of the driving component 4 and the frame body 21 to displace. Since the frame body 21 has a driving inclined surface 211 and the output end of the driving component 4 cooperates with the driving inclined surface 211, when the frame body 21 moves, the output end of the driving component 4 will have a relative displacement with the driving inclined surface 211. By arranging a guide rail between the output end of the driving member and the driving inclined surface 211, the relative displacement between the output end of the driving member and the driving inclined surface 211 can be limited, preventing the circumferential misalignment between the two and increasing the stability of the relative displacement between the two.

[0042] Further, the driving assembly 4 further includes a transmission member 41. The transmission member 41 is drivingly connected to the driving member and is located between the output end and the guide rail structure 22. The output end drives the frame body 21 to move radially through the transmission member 41. The transmission member 41 is annular, and all the driving inclined surfaces 211 are respectively drivingly connected to different positions in the circumferential direction of the transmission member 41. When the transmission member 41 moves along the axial direction of the fixed frame 1, it drives the frame bodies 21 of all the snap ring assemblies to move radially synchronously.

[0043] The transmission member 41 plays a role in transmission, transmitting the transmission of the driving member to the frame body 21. Driving the movement of the transmission member 41 can drive the frame body 21 to move. Since all the driving inclined surfaces 211 of the frame bodies 21 are drivingly connected to the transmission member 41, when the transmission member 41 moves, it can drive all the frame bodies 21 to move together, which can increase the synchronism of the movement of the frame bodies 21 at different positions of the fixed frame 1, so that after the stop diameter of the snap ring assembly 2 changes, the stop of the snap ring can remain a complete circle. This avoids affecting the subsequent processing effect of the tire's inside and outside wrapping due to the asynchronous movement of individual snap ring assemblies 2.

[0044] Further, a first guiding structure 23 is provided between the frame body 21 and the fixed frame 1. The first guiding structure 23 extends radially along the fixed frame 1. A second guiding structure 24 is provided between the frame body 21 and the inside wrapping finger assembly 3. The second guiding structure 24 extends axially along the fixed frame 1.

[0045] The first guiding structure 23 can limit the movement of the frame body 21, prevent the frame body 21 from displacing in the circumferential direction of the fixed frame 1, and increase the stability of the contraction or expansion of the snap ring assembly 2.

[0046] The second guiding structure 24 can limit the movement of the inside wrapping finger 31, so that the inside wrapping finger assembly 3 can only move along the axial direction of the fixed frame 1, and increase the stability of the movement of the inside wrapping finger assembly 3.

[0047] Further, the snap ring assembly 2 further includes a snap ring stop. The snap ring stop is connected to the frame body 21 and moves synchronously with the frame body 21. The snap ring stop has a snap ring end, and the snap ring end has a concave portion for placing and supporting the steel ring.

[0048] Through the concave portion provided on the snap ring end, it is convenient for the snap ring stop 25 to cooperate with the steel ring, so as to realize the snap ring and inside and outside wrapping processes of the tire. The diameter of the ring formed by the snap ring stops at each position is the aforementioned stop diameter of the snap ring assembly 2.

[0049] Further, the snap ring assembly 2 further includes a wear-resistant member 26. The wear-resistant member 26 is provided on the side of the snap ring stop facing the finger-shaped piece and abuts against the finger-shaped piece.

[0050] The wear-resistant member 26 plays a protective role. During the operation of the bead ring assembly 2, there is a repeated relative movement between the bead ring assembly 2 and the tire. During this process, the parts of the bead ring assembly 2 in contact with the tire will be worn. After the wear reaches a certain degree, the bead ring assembly needs to be replaced. Therefore, the bead ring assembly further includes a wear-resistant member 26. The wear-resistant member 26 is used to contact the tire instead of the rest of the bead ring assembly. In this way, only the wear-resistant member 26 is worn during wear, thereby reducing the wear of the bead ring assembly 2. When the wear reaches the maximum degree, only the wear-resistant member 26 needs to be replaced, reducing the difficulty of replacement.

[0051] In the present application, the bead ring assemblies 2 and the main ply finger assemblies 3 are arranged in one-to-one correspondence.

[0052] When arranging the bead ring assembly 2 and the main ply finger assembly 3, first install the bead ring assembly 2, and then directly install the main ply finger assembly 3 on the bead ring assembly 2, which is convenient for the arrangement of the bead ring assembly and the main ply finger assembly 3.

[0053] In the present application, the main ply finger assembly 3 further includes a mounting seat 32, a push rod 33, and an elastic member 34. The mounting seat 32 is movably connected to the bead ring assembly 2, the finger-shaped piece is rotatably connected to the mounting seat 32, the push rod 33 is rotatably connected to the finger-shaped piece, and the elastic member 34 abuts against the push rod 33 and provides an elastic force for the push rod 33 to drive the finger-shaped piece to move to the unfolded state.

[0054] The mounting seat 32 plays a role in supporting and connecting the installation of the finger-shaped piece and the push rod 33. When the main ply finger assembly 3 performs the main ply operation on the tire, the movement of the bead ring assembly 2 drives the end of the finger-shaped piece away from the mounting seat 32 to rotate in the direction close to the axis of the fixing frame 1. At this time, the finger-shaped piece compresses the elastic member 34. Before the next main ply operation, the main ply finger assembly 3 moves axially relative to the bead ring assembly 2, so that the bead ring assembly 2 is disengaged from the finger-shaped piece. The finger-shaped piece is flipped and unfolded under the action of the elastic member 34, so that when the bead ring assembly 2 moves axially subsequently, it can extrude the finger-shaped piece from the outside to achieve the main ply action.

[0055] Furthermore, the main ply finger assembly 3 further includes a sliding seat 35 and an adjusting member 36. The sliding seat 35 abuts against the elastic member 34. The mounting seat 32 has a sliding groove extending along the axis of the fixing frame 1. The sliding seat 35 is movably connected to the sliding groove. The adjusting member 36 is movably connected to the mounting seat 32 and abuts against the sliding seat 35. When the adjusting member 36 acts, it drives the sliding seat 35 to move along the sliding groove to change the initial pre-tightening force of the elastic member 34.

[0056] When it is necessary to perform inside and outside wrapping on tires of different sizes, it is necessary to make corresponding adjustments to the rabbet diameter of the bead ring assembly 2 and the diameter of the inside wrapping finger assembly 3 to adapt to the size of the tire. Similarly, for tires of different sizes, the angle at which the end of the finger piece away from the mounting seat 32 rotates towards the axis direction of the fixing frame 1 is different, which in turn leads to different degrees of compression of the elastic member 34, affecting the performance of the elastic member 34. By adjusting the adjusting member 36 to change the position of the sliding seat 35, the compression degree of the elastic member 34 can be adjusted to facilitate adapting to tires of different sizes.

[0057] Embodiment 2

[0058] This embodiment provides a farm tire forming machine, including the inside and outside wrapping device in Embodiment 1.

[0059] From the above description, it can be seen that the above embodiments of the present utility model achieve the following technical effects:

[0060] 1. By driving the radial movement of the bead ring assembly 2 and the inside wrapping finger assembly 3 through the driving assembly 4, the rabbet diameter of the bead ring assembly 2 and the diameter of the ring formed by the inside wrapping finger assembly 3 can be changed, so as to adapt to tires of different sizes. There is no need to stop the machine to replace the inside wrapping finger assembly 3 and the bead assembly, etc., reducing the workload and the time spent on replacing parts, improving the overall production efficiency, and solving the problem of delaying production time due to frequent replacement of tooling in the prior art.

[0061] 2. Since the range of change in the diameter of the ring formed by the rabbet diameter of the bead ring assembly 2 and the inside wrapping finger assembly 3 is related to the radial movement of the bead ring assembly 2, and the radial movement of the bead ring is a continuous movement and can stop at any position within its movement range driven by the driving assembly 4, the present application can adapt to a variety of tires of different sizes, not limited to one or two, and has a wide application range.

[0062] 3. The wear-resistant member 26 plays a protective role. During the working process of the bead ring assembly 2, it is necessary to have repeated relative movement with the tire, which will cause wear to the part of the bead assembly in contact with the tire. After the wear reaches a certain degree, it is necessary to replace the bead assembly. Therefore, the bead assembly further includes a wear-resistant member 26. By using the wear-resistant member 26 to contact the tire instead of the rest of the bead assembly, only the wear-resistant member 26 will be worn during wear, thereby reducing the wear of the bead ring assembly 2. When the wear reaches the maximum degree, only the wear-resistant member 26 needs to be replaced, reducing the replacement difficulty.

[0063] Obviously, the embodiments described above are only a part of the embodiments of the present utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0064] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they specify the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0065] It should be noted that the terms "first", "second", etc. in the description and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and do not necessarily have to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present application described herein can be implemented in an order different from those illustrated or described herein.

[0066] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, the present utility model can have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A front and back wrapping device, characterized in that, The front and back wrapping device includes: A ring-shaped fixing frame (1); A plurality of buckle ring assemblies (2), each of the buckle ring assemblies (2) is arranged at intervals along the circumferential direction of the fixing frame (1), the buckle ring assemblies (2) are arranged to be radially movable relative to the fixing frame (1), and the buckle ring assemblies (2) have a buckle end for buckling. A plurality of front wrapping finger assemblies (3), each of the front wrapping finger assemblies (3) is arranged at intervals along the circumferential direction of the fixing frame (1), the front wrapping finger assemblies (3) are connected to the inner side of the buckle ring assemblies (2) and can move radially along the fixing frame (1) driven by the buckle ring assemblies (2), the front wrapping finger assemblies (3) are arranged to be axially movable relative to the buckle ring assemblies (2), the front wrapping finger assemblies (3) include finger-shaped pieces, the finger-shaped pieces have a contracted state in which they are radially retracted and limited by the buckle end and an expanded state in which they are radially expanded and rotated to avoid the buckle end, and when the front wrapping finger assemblies (3) move axially relative to the buckle ring assemblies (2), the finger-shaped pieces are switched between the expanded state and the contracted state. A driving assembly (4), the driving assembly (4) is drivingly connected to the buckle ring assemblies (2) and drives the buckle ring assemblies (2) to move radially.

2. The front and back wrapping device according to claim 1, characterized in that, The buckle ring assembly (2) includes a frame body (21), the frame body (21) is movably connected to the fixing frame (1) and the front wrapping finger assemblies (3), the frame body (21) has a driving inclined surface (211), the driving inclined surface (211) forms an angle with the axis of the fixing frame (1), the driving assembly (4) includes a driving member, the output end of the driving member is drivingly connected to the driving inclined surface (211), and there is a guide rail structure (22) between the output end and the driving inclined surface (211), the output end is arranged to be axially movable along the fixing frame (1) and drives the frame body (21) to move radially through the driving inclined surface (211) when moving.

3. The inside-outside wrapping device according to claim 2, wherein The driving assembly (4) further includes a transmission member (41), the transmission member (41) is drivingly connected to the driving member and is located between the output end and the guide rail structure (22), the output end drives the frame body (21) to move radially through the transmission member (41), the transmission member (41) is ring-shaped, and all the driving inclined surfaces (211) are respectively drivingly connected to different positions in the circumferential direction of the transmission member (41), and when the transmission member (41) moves axially along the fixing frame (1), it drives the frame bodies (21) of all the buckle ring assemblies (2) to move radially synchronously.

4. The reverse and forward wrapping device according to claim 2, characterized in that, A first guiding structure (23) is arranged between the frame body (21) and the fixing frame (1), the first guiding structure (23) extends radially along the fixing frame (1), and a second guiding structure (24) is arranged between the frame body (21) and the front wrapping finger assemblies (3), the second guiding structure (24) extends axially along the fixing frame (1).

5. The reverse and forward wrapping device according to claim 2, wherein, The snap ring assembly (2) further includes a snap ring stop, which is connected to the frame body (21) and moves synchronously with the frame body (21). The snap ring stop has the snap ring end, and the snap ring end has a recess for placing and supporting the steel ring.

6. The inside-outside wrapping device according to claim 5, characterized in that The snap ring assembly (2) further includes a wear-resistant member (26), which is arranged on one side of the snap ring stop facing the finger piece and abuts against the finger piece.

7. The front and back wrapping device according to claim 1, characterized in that, The snap ring assemblies (2) and the front wrapping finger assemblies (3) are arranged in one-to-one correspondence.

8. The inside-outside wrapping device according to claim 1, characterized in that, The front wrapping finger assembly (3) further includes: a mounting seat (32), which is movably connected to the snap ring assembly (2), and the finger piece is rotatably connected to the mounting seat (32); a push rod (33), which is rotatably connected to the finger piece; an elastic member (34), which abuts against the push rod (33) and provides an elastic force for the push rod (33) to drive the finger piece to move to the unfolded state.

9. The inside-outside wrapping device according to claim 8, characterized in that, The front wrapping finger assembly (3) further includes: a sliding seat (35), which abuts against the elastic member (34). The mounting seat (32) has a sliding groove extending along the axis of the fixed frame (1), and the sliding seat (35) is movably connected to the sliding groove; an adjusting member (36), which is movably connected to the mounting seat (32) and abuts against the sliding seat (35). When the adjusting member (36) acts, it drives the sliding seat (35) to move along the sliding groove to change the initial pre-tightening force of the elastic member (34).

10. An agricultural tire forming machine, characterized in that, Comprising the front and back wrapping device according to any one of claims 1 to 9.

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