Forward and reverse wrapping device and forming machine

Abstract

The utility model provides a forward and reverse wrapping device and a forming machine. The forward and reverse wrapping device comprises a forward wrapping finger assembly and a reverse wrapping finger assembly, and the forward wrapping finger assembly comprises a plurality of forward wrapping fingers capable of expanding and shrinking in the radial direction; the tire bead clamping assembly is arranged on the outer side of the positive wrapping finger assembly in a sleeving mode, the tire bead clamping assembly comprises a clamping piece capable of doing expansion and contraction motion, the clamping piece is located on the outer side of the positive wrapping finger assembly and can hinder expansion of the positive wrapping finger assembly, the clamping piece is further provided with a supporting part used for supporting a tire bead, and the supporting part is located on the outer side of the clamping piece. The problem that time and labor are wasted due to the fact that tools need to be replaced frequently during cross-inch-level production of a forward and reverse package device in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of tire processing, in particular to a forward and reverse packaging device and a molding machine. Background Art

[0002] The positive and negative packing device is mainly used in the two-step forming machine to realize the forming production of the tire body tube. Since the tire factory produces a large number of tire specifications, it is necessary to frequently carry out cross-inch production. However, the current positive and negative packing device usually needs to be replaced at each inch level, including the replacement of the bladder assembly, positive packing finger assembly, positive packing finger constraint assembly, buckle ring assembly and other components. The workload of replacing the tooling is large, the time is long, and the efficiency is low. Especially for large tire equipment such as agricultural tires and engineering tires, the replacement of tooling seriously affects the production output, and the replacement is difficult due to the large size of the tooling. Utility Model Content

[0003] The main purpose of the utility model is to provide a positive and negative packaging device and a forming machine, so as to solve the problem that the positive and negative packaging device in the prior art needs to frequently replace tooling during cross-inch production, which is time-consuming and labor-intensive.

[0004] In order to achieve the above-mentioned purpose, according to one aspect of the utility model, a forward and reverse packing device is provided, comprising: a forward packing finger assembly, the forward packing finger assembly comprises a plurality of radially expandable and contractible forward packing fingers; a tire bead clamping assembly, the tire bead clamping assembly is sleeved on the outside of the forward packing finger assembly, the tire bead clamping assembly comprises an expandable and contractible clamping member, the clamping member is located on the outside of the forward packing finger assembly and can hinder the expansion of the forward packing finger assembly, the clamping member also has a supporting portion for supporting the tire bead, the supporting portion is located on the outside of the clamping member.

[0005] Furthermore, the clamping member has a recessed portion on the outer side away from the front finger assembly, the recessed portion serving as a supporting portion, the recessed portion having a first surface and a second surface adjacent to each other, an angle being formed between the first surface and the second surface, the first surface being inclined relative to the axis of the front finger assembly, the inner side of the tire bead abutting against the first surface, and the end face of the tire bead abutting against the second surface.

[0006] Furthermore, along the axial direction of the front finger assembly and in the direction approaching the second surface, the first surface is inclined in the direction approaching the axis of the front finger assembly, so that an angle less than 90 degrees is formed between the first surface and the second surface.

[0007] Further, the recess is simultaneously communicated with the axial end surface of the clamp, the radial outer side surface of the clamp and the circumferential side surface of the clamp.

[0008] Furthermore, the tire bead clamping assembly also includes a constraint bearing, which is connected to the circumferential side of the clamping member, and the constraint bearing abuts against the positive finger assembly. The clamping member hinders the expansion of the positive finger assembly through the constraint bearing.

[0009] Furthermore, there are multiple clamping members, and each clamping member is arranged at intervals along the circumference of the positive wrapping finger assembly.

[0010] Furthermore, the tire bead clamping assembly also includes: a base ring, which is sleeved on the outside of the main finger assembly and can move axially relative to the main finger assembly, and a clamping member is movably arranged on the base ring, and the clamping member can move radially relative to the base ring; an axial driving member, which is drivingly connected to the clamping member and drives the clamping member to move axially; and a radial driving member, which is drivingly connected to the clamping member and drives the clamping member to move radially.

[0011] Furthermore, the tire bead clamping assembly also includes a guide member, which is inserted into the base ring and controls the axial movement direction of the base ring.

[0012] Furthermore, the forward and reverse packing device also includes: an reverse packing capsule assembly, the forward packing finger assembly and the tire bead clamping assembly are all located on the outside of the reverse packing capsule assembly, and the forward packing finger assembly, the tire bead clamping assembly and the reverse packing capsule assembly can independently move axially; a reverse packing booster assembly, the forward packing finger assembly is connected to the reverse packing booster assembly, and moves axially under the drive of the reverse packing booster assembly.

[0013] According to another aspect of the present invention, a forming machine is provided, comprising the above-mentioned forward and reverse packaging device.

[0014] By applying the technical solution of the utility model, a tire bead clamping assembly is provided on the outer side of the main wrapping finger assembly. The clamping piece of the tire bead clamping assembly can expand and contract radially on the one hand, so that the tire bead clamping assembly can adapt to tires of different sizes. Therefore, it is no longer necessary to replace the tire bead clamping related components when processing tires of different sizes. When in use, the clamping piece radially contracts to the minimum diameter, and then the tire bead is placed on the support part. At this time, the clamping piece radially expands to clamp the tire bead. In this process, the radial expansion amplitude of the clamping piece is automatically adjusted according to the different sizes of the tire bead, so as to adapt to the size of the tire bead. On the other hand, the tire bead clamping assembly also has the function of constraining the positive finger, that is, the clamping part can constrain the expansion of the positive finger assembly, so that while adapting to different tire bead diameters, it can also constrain the positive finger assembly, thereby achieving the inch-level adaptability of the tire bead clamping assembly and the positive finger assembly. The above two aspects cooperate with each other to achieve the effect of not having to replace tooling when changing inch levels, thereby reducing the time and effort caused by replacing tooling, reducing the labor intensity of workers, reducing wasted time, improving processing efficiency, and increasing production output. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0016] Figure 1 The schematic diagram of the structure of the forward and reverse packaging device of the utility model is shown;

[0017] Figure 2 Shows Figure 1 Schematic diagram of the structure of the cooperation between the Zhongzheng finger packing assembly and the tire bead clamping assembly;

[0018] Figure 3 Shows Figure 2 Schematic diagram of the structure of the clamping part.

[0019] The above drawings include the following reference numerals:

[0020] 10. Positive bead finger assembly; 20. Bead clamping assembly; 21. Clamping member; 211. First surface; 212. Second surface; 22. Constraint bearing; 23. Base ring; 24. Axial drive member; 25. Radial drive member; 26. Guide member; 30. Inverted bead capsule assembly; 40. Inverted bead booster assembly. DETAILED DESCRIPTION

[0021] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0022] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0023] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention.

[0024] In order to solve the problem that the conventional positive and negative packaging device needs to frequently change the tooling when producing across inch levels, which is time-consuming and labor-intensive, the utility model provides a positive and negative packaging device and a molding machine. The molding machine has the following positive and negative packaging device.

[0025] like Figures 1 to 3A forward and reverse packing device shown in the figure includes a forward packing finger assembly 10 and a tire bead clamping assembly 20, the forward packing finger assembly 10 includes a plurality of radially expandable and contractible forward packing fingers; the tire bead clamping assembly 20 is sleeved on the outside of the forward packing finger assembly 10, the tire bead clamping assembly 20 includes an expandable and contractible clamping member 21, the clamping member 21 is located on the outside of the forward packing finger assembly 10 and can hinder the expansion of the forward packing finger assembly 10, the clamping member 21 also has a supporting portion for supporting the tire bead, and the supporting portion is located on the outside of the clamping member 21.

[0026] In this embodiment, a tire bead clamping assembly 20 is provided on the outer side of the main wrapping finger assembly 10. The clamping member 21 of the tire bead clamping assembly 20 can expand and contract radially, so that the tire bead clamping assembly 20 can adapt to tires of different sizes. There is no need to replace the tire bead clamping related components when processing tires of different sizes. When in use, the clamping member 21 radially shrinks to the smallest diameter, and then the tire bead is placed on the support portion. At this time, the clamping member 21 radially expands to clamp the tire bead. In this process, the radial expansion amplitude of the clamping member 21 is automatically adjusted according to the different sizes of the tire bead, so as to adapt to the size of the tire bead. On the other hand, the tire bead clamping assembly 20 also has the function of constraining the positive finger, that is, the clamping member 21 can constrain the expansion of the positive finger assembly 10, so that while adapting to different tire bead diameters, it can also constrain the positive finger assembly 10, thereby achieving the cross-level adaptability of the tire bead clamping assembly 20 and the positive finger assembly 10. The above two aspects cooperate with each other to achieve the effect of not having to replace tooling when changing the inch level, thereby reducing the time and effort brought about by replacing tooling, reducing the labor intensity of workers, reducing wasted time, improving processing efficiency, and increasing production output.

[0027] It should be noted that the axial, radial and circumferential directions mentioned in this embodiment are all for the front and back packing device as a whole, and for individual components such as the front packing finger assembly 10 and the bead clamping assembly 20, their axial, radial and circumferential directions are consistent with the axial, radial and circumferential directions of the front and back packing device as a whole. At the same time, the inside and outside refer to the positions close to the center and far from the center in the radial direction.

[0028] like Figure 3As shown, in this embodiment, the clamping member 21 has a recessed portion on the outer side away from the front finger assembly 10, and the recessed portion serves as a supporting portion. The recessed portion has adjacent first and second surfaces 211 and 212, and an angle is formed between the first and second surfaces 211 and 212, wherein the first surface 211 extends approximately along the axial direction of the device, and the second surface 212 extends approximately along the radial direction of the device. In this embodiment, the second surface 212 extends in the radial direction, but the first surface 211 does not extend completely in the axial direction, but is arranged to be inclined relative to the axis of the front finger assembly 10, that is, a certain angle is formed between the first surface 211 and the axis of the device, and the size of the angle does not need to be very large. The reason why the first surface 211 is arranged in an inclined manner is that when the tire bead is clamped, the inner side of the tire bead abuts against the first surface 211. At this time, the inclined first surface 211 is conducive to the stability of the tire bead being clamped on the clamping member 21, ensuring the clamping effect, and at this time, the end face of the tire bead abuts against the second surface 212 to achieve positioning.

[0029] Preferably, along the axial direction of the positive finger assembly 10, the first surface 211 is inclined in the direction close to the axis of the positive finger assembly 10, and because the second inclined surface of this embodiment extends in the radial direction of the device, an angle less than 90 degrees is formed between the first surface 211 and the second surface 212. In this way, when the inner side of the tire bead abuts against the first surface 211, the tire bead has a tendency to move in the direction close to the second surface 212 due to the inclination of the first surface 211, and the second surface 212 stops the tire bead, so that the tire bead can be stably clamped on the clamping member 21 without accidentally slipping, and the tire bead is vertically positioned to ensure the reliability of clamping.

[0030] In order to ensure stable support of the tire bead, the recessed portion of this embodiment is simultaneously connected to the axial end face of the clamping member 21, the radial outer side face of the clamping member 21, and the circumferential side face of the clamping member 21. The connection between the axial end face and the radial outer side face allows only the second surface 212 of the recessed portion to abut against one end face of the tire bead, while there is no abutting surface for the other end face and the outer side face of the tire bead. The connection with the circumferential side face can avoid the tire bead, ensure that the tire bead can be placed in the recessed portion, and ensure stability.

[0031] like Figure 3As shown, in this embodiment, the tire bead clamping assembly 20 further includes a constraint bearing 22, which is connected to the circumferential side surface of the clamping member 21, and the constraint bearing 22 protrudes from the inner side surface of the clamping member 21, that is, the constraint bearing 22 is closer to the center of the device than the inner side surface of the clamping member 21, so that the component that actually abuts against the outer side surface of the positive finger assembly 10 is not the clamping member 21, but the constraint bearing 22, so that the clamping member 21 hinders the expansion of the positive finger assembly 10 through the constraint bearing 22. At the same time, since the constraint bearing 22 can rotate relative to the clamping member 21, when the positive finger assembly 10 and the clamping member 21 move axially relative to each other, the constraint bearing 22 can rotate relative to the clamping member 21 under the action of the positive finger assembly 10, thereby ensuring the smoothness of the axial movement between the clamping member 21 and the positive finger assembly 10, optimizing the sliding friction between the two into rolling friction, and achieving the effect of reducing wear.

[0032] like Figure 2 As shown, in this embodiment, the clamping member 21 adopts the structural form of a clamping block. On this basis, in order to ensure the reliable clamping effect of the clamping member 21 on the tire bead as a whole, a plurality of clamping members 21 are provided, and each clamping member 21 is arranged at intervals along the circumference of the positive wrapping finger assembly 10, so that the clamping members 21 at different circumferential positions can clamp different positions of the tire bead respectively, and the tire bead can be reliably clamped as a whole. When in use, the clamping members 21 move radially synchronously, so as to achieve overall expansion and contraction. Of course, in addition to setting the clamping member 21 as a clamping block structure, the clamping member 21 can also be set as a clamping ring structure, so that the clamping ring can clamp different positions of the tire bead to achieve stable clamping.

[0033] like Figure 2As shown, the tire bead clamping assembly 20 of this embodiment further includes a base ring 23, an axial drive member 24 and a radial drive member 25. The base ring 23 is annular and is sleeved on the outer side of the positive finger assembly 10. The base ring 23 is a structure for installing the components of the tire bead clamping assembly 20, and it does not control the expansion and contraction of the positive finger assembly 10. The base ring 23 can move axially relative to the positive finger assembly 10, and the clamping member 21 is movably arranged on the base ring 23. The clamping member 21 can move radially relative to the base ring 23. In this way, on the one hand, the clamping member 21 can move radially alone to achieve the clamping and release of the tire bead, and on the other hand, the clamping member 21 can move axially together with the base ring 23 or relative to the base ring 23, thereby changing the position to achieve different processing requirements. The axial drive member 24 is connected to the clamping member 21 and drives the clamping member 21 to move axially. The radial drive member 25 is connected to the clamping member 21 and drives the clamping member 21 to move radially, thereby achieving radial and axial movement of the clamping member 21. The axial drive member 24 and the radial drive member 25 can be driven by components such as a cylinder. In this way, the tire bead clamping assembly 20 is driven by a cylinder to automatically put on the tire bead, thereby preventing the risk of excessive hydraulic pressure and deforming the tire bead.

[0034] In this embodiment, the tire bead clamping assembly 20 also includes a guide member 26, which is inserted into the base ring 23. The guide member 26 can take the form of a guide column or the like, and is fixedly connected to an external frame or other components. In this way, under the guidance of the guide member 26, the base ring 23 can only move axially, thereby ensuring the reliability of the moving direction.

[0035] like Figure 1 As shown, in this embodiment, the front and back packing device further includes a back packing capsule assembly 30 and a back packing booster assembly 40, the front packing finger assembly 10 and the tire bead clamping assembly 20 are both located outside the back packing capsule assembly 30, and the front packing finger assembly 10, the tire bead clamping assembly 20 and the back packing capsule assembly 30 can be provided with driving components separately, so that the three can move axially independently, respectively, to achieve precise positioning of the front and back packing action of the tire. The front packing finger assembly 10 is connected to the back packing booster assembly 40, and moves axially driven by the back packing booster assembly 40 to achieve the tire bead upper action during the front packing process.

[0036] The specific use process of the forward and reverse packaging device of this embodiment is as follows:

[0037] 1. The axial driving member 24 drives the clamping member 21 to extend, and the radial driving member 25 drives the clamping member 21 to shrink to the minimum diameter, and the tire bead is manually placed on the clamping member 21. Since the first surface 211 of the clamping member 21 is an inclined surface, the tire bead is not easy to fall off;

[0038] 2. The reverse capsule assembly 30, the positive-encapsulation finger assembly 10 and the reverse-encapsulation booster assembly 40 are hydraulically driven to move to the pre-reversal position;

[0039] 3. The reverse capsule assembly 30 is extended to the forward and reverse capsule position alone;

[0040] 4. The front wrapping finger assembly 10 extends forward to the front and back wrapping position, and the front wrapping finger is freed from the constraint of the clamping member 21. Under the action of the front wrapping finger spring, the front wrapping finger opens;

[0041] 5. The reverse packing boosting assembly 40 extends forward to the positive and negative packing position. Under the constraint of the clamping member 21, the positive packing finger is compressed to the waiting position diameter. At this time, the rubber material is clamped by the positive packing finger;

[0042] 6. The hydraulic drive turns up the booster assembly 40 to move and drive the bead clamping assembly 20 to extend forward to the upper bead position, pressing the bead against the drum end surface;

[0043] 7. The axial driving member 24 drives the clamping member 21 to return, so as to place the tire bead;

[0044] 8. The hydraulically driven turn-up boosting assembly 40 moves and drives the tire bead clamping assembly 20 to return to the pre-turn-up position to complete the automatic tire bead mounting action; synchronously, the hydraulically driven positive bead finger assembly 10 returns to the pre-turn-up position;

[0045] 9. The inverted capsule in the inverted capsule assembly 30 is inflated to an inverted diameter;

[0046] 10. The hydraulically driven reverse boosting assembly 40 extends forward to the boosting position to complete the reverse boosting action;

[0047] 11. The reverse capsule assembly 30, the forward finger assembly 10 and the reverse booster assembly 40 are hydraulically driven to return to the starting position, completing a forward and reverse action.

[0048] It should be noted that, the multiple in the above embodiments refers to at least two.

[0049] From the above description, it can be seen that the above embodiments of the utility model achieve the following technical effects:

[0050] 1. It solves the problem in the prior art that the front and back packaging device needs to frequently change the tooling when producing across inch levels, which is time-consuming and labor-intensive;

[0051] 2. There is no need to change tooling when changing grades, which reduces the time and effort of changing tooling, reduces the labor intensity of workers, reduces wasted time, improves processing efficiency, and increases production output;

[0052] 3. The inclination of the first surface enables the tire bead to be stably clamped on the clamping member without accidentally slipping off, and realizes the vertical positioning of the tire bead, ensuring the reliability of clamping;

[0053] 4. The tire bead clamping assembly is driven by a cylinder to automatically put on the tire bead, thereby preventing the risk of excessive hydraulic pressure causing the tire bead to deform.

[0054] Obviously, the embodiments described above are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0055] 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 "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0056] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0057] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A forward and reverse packaging device, characterized in that: include: A positive-envelope finger assembly (10), the positive-envelope finger assembly (10) comprising a plurality of radially expandable and contractible positive-envelope fingers; A tire bead clamping assembly (20), wherein the tire bead clamping assembly (20) is sleeved on the outer side of the main finger assembly (10), and the tire bead clamping assembly (20) includes an expandable and contractible clamping member (21), wherein the clamping member (21) is located on the outer side of the main finger assembly (10) and can hinder the expansion of the main finger assembly (10), and the clamping member (21) also has a supporting portion for supporting the tire bead, and the supporting portion is located on the outer side of the clamping member (21).

2. The positive and negative packaging device according to claim 1, characterized in that: The clamping member (21) has a recessed portion on the outer side away from the front finger assembly (10), and the recessed portion serves as the supporting portion. The recessed portion has a first surface (211) and a second surface (212) adjacent to each other, and an angle is formed between the first surface (211) and the second surface (212). The first surface (211) is inclined relative to the axis of the front finger assembly (10), and the inner side of the tire bead abuts against the first surface (211), and the end face of the tire bead abuts against the second surface (212).

3. The positive and negative packaging device according to claim 2, characterized in that: Along the axial direction of the front-finger assembly (10) toward the second surface (212), the first surface (211) is inclined toward the axis of the front-finger assembly (10) so that an angle less than 90 degrees is formed between the first surface (211) and the second surface (212).

4. The positive and negative packaging device according to claim 2, characterized in that: The recessed portion is simultaneously in communication with the axial end surface of the clamping member (21), the radial outer side surface of the clamping member (21), and the circumferential side surface of the clamping member (21).

5. The positive and negative packaging device according to claim 1, characterized in that: The tire bead clamping assembly (20) also includes a restraining bearing (22), which is connected to the circumferential side of the clamping member (21), and the restraining bearing (22) abuts against the positive finger assembly (10). The clamping member (21) hinders the expansion of the positive finger assembly (10) through the restraining bearing (22).

6. The positive and negative packaging device according to claim 1, characterized in that: There are a plurality of clamping members (21), and each of the clamping members (21) is arranged at intervals along the circumference of the front wrapping finger assembly (10).

7. The forward and reverse packaging device according to any one of claims 1 to 6, characterized in that: The tire bead clamping assembly (20) further comprises: A base ring (23), wherein the base ring (23) is sleeved on the outer side of the positive wrapping finger assembly (10) and is axially movable relative to the positive wrapping finger assembly (10); the clamping member (21) is movably arranged on the base ring (23), and the clamping member (21) is radially movable relative to the base ring (23); An axial driving member (24), the axial driving member (24) being drivingly connected to the clamping member (21) and driving the clamping member (21) to move axially; A radial driving member (25) is drivingly connected to the clamping member (21) and drives the clamping member (21) to move radially.

8. The positive and negative packaging device according to claim 7, characterized in that: The tire bead clamping assembly (20) further comprises a guide member (26), wherein the guide member (26) is inserted into the base ring (23) and controls the axial movement direction of the base ring (23).

9. The forward and reverse packaging device according to any one of claims 1 to 6, characterized in that: The forward and reverse packaging device also includes: An inverted bladder assembly (30), wherein the positive bladder finger assembly (10) and the tire bead clamping assembly (20) are both located outside the inverted bladder assembly (30), and the positive bladder finger assembly (10), the tire bead clamping assembly (20) and the inverted bladder assembly (30) are independently movable axially; The reverse-envelope boosting assembly (40) is connected to the reverse-envelope boosting assembly (40) and moves axially under the drive of the reverse-envelope boosting assembly (40).

10. A molding machine, characterized in that: It comprises the forward and reverse packaging device described in any one of claims 1 to 9.

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