Tire protection chain forming device
By combining a bracket, mold column, forming block, support rod and elastic element, the problem of displacement and offset during the bending of bar stock is solved, and high-quality forming and efficient production of chain links are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-15
- Publication Date
- 2026-04-21
AI Technical Summary
In existing technologies, bar stock is prone to displacement during bending, which affects the forming quality and production efficiency of the chain links.
The structure adopts a combination of bracket, mold column, forming block, support rod and elastic element. The support rod provides stable support under the action of elastic element to avoid displacement of the middle of the bar stock. Combined with the design of forming roller and extrusion roller, it ensures that the bar stock can be bent and formed smoothly.
It improves the forming quality and production efficiency of chain links, reduces the defect rate, and enhances the stability and positioning accuracy of bar stock during bending.
Smart Images
Figure CN224143431U_ABST
Abstract
Description
Technical Field
[0001] The embodiments of this utility model relate to the field of tire protection chain processing technology, specifically, to a tire protection chain forming device. Background Technology
[0002] In modern transportation, vehicle operating conditions are complex and diverse. Especially in harsh environments such as mines and construction sites, tires face numerous risks of damage, including scratches from sharp rocks and hard objects. This not only reduces tire lifespan but can also affect operational efficiency and even jeopardize driving safety due to tire failure. Tire protection chains, as a tire protection device, are widely used in various engineering vehicles and special-purpose vehicles. Tire protection chains are mainly composed of numerous interconnected links that form a protective mesh on the tire surface, resisting direct external damage and improving tire safety and durability in harsh environments.
[0003] Currently, in the manufacturing process of tire protection chain links, it is necessary to bend bar stock into rings to obtain the chain link product. Existing technology typically involves supporting both ends of the bar stock during the bending operation to allow sufficient space for bending deformation, thus suspending the middle section of the bar stock in the air.
[0004] However, during the bending process, due to the lack of support in the middle of the bar stock, it is prone to displacement when subjected to external bending force. On the one hand, this reduces the forming quality of the chain links and directly affects the tightness and compatibility of the connection between the links of the tire protection chain; on the other hand, it increases the defect rate and reduces production efficiency.
[0005] Therefore, how to provide more stable support for the bar stock during the bending process, reduce the displacement of the bar stock, and improve the forming quality of the chain links has become an important problem that urgently needs to be solved in the current tire protection chain forming technology field. Utility Model Content
[0006] To overcome the above-mentioned defects, embodiments of this utility model provide a tire protection chain forming device, which solves the technical problem in the related art that the bar stock is prone to displacement during bending, affecting the bending quality.
[0007] According to one aspect, at least one embodiment of the present invention provides a tire protection chain forming device for processing bar stock into chain links, comprising a bracket, a die column, a forming block, a support rod, and an elastic element. The die column is disposed on the bracket, and the forming block is slidably disposed on the bracket. The forming block is arc-shaped and matches the outer contour of the die column. The two ends of the forming block are used to support the two ends of the bar stock. The forming block is configured to drive the bar stock closer to and abut against the die column, thereby deforming the bar stock into a U-shape.
[0008] The support rod is slidably disposed on the molding block to support the middle part of the bar stock. The two ends of the elastic member act on the support rod and the molding block respectively to provide the support rod with a force close to the bar stock. The support rod is configured to retract to the molding block after the bar stock contacts the mold post, so that the bar stock fits against the mold post.
[0009] For example, in at least one embodiment of the present invention, a tire protection chain forming device further includes:
[0010] The support rods are two in number and arranged symmetrically, and each support rod has a support groove at its top end, which is arc-shaped.
[0011] For example, in at least one embodiment of the present invention, a tire protection chain forming device further includes:
[0012] Both ends of the forming block are rotatably equipped with forming rollers, and the forming rollers have arc-shaped grooves on their circumference for fitting the outer circle of the bar material.
[0013] For example, in at least one embodiment of the present invention, a tire protection chain forming device further includes:
[0014] The support is equipped with two swing arms, which are symmetrically arranged on both sides of the mold column. Each swing arm has a rotating extrusion roller at its swing end. The extrusion roller has an arc-shaped groove on its circumference for conforming to the outer diameter of the bar stock.
[0015] The extrusion roller is configured to abut against and extrude the U-shaped bar on the die column under the drive of the swing arm, so that the bar is deformed into an O-shape.
[0016] For example, in at least one embodiment of the present invention, a tire protection chain forming device further includes:
[0017] It also includes a telescopic cylinder, the two ends of which are respectively hinged to the bracket and the swing end of the swing arm, and the telescopic cylinder is used to drive the swing arm to swing.
[0018] For example, in at least one embodiment of the present invention, a tire protection chain forming device further includes:
[0019] The bracket has a guide hole, and a feeding push rod is slidably disposed in the guide hole. The feeding push rod is used to push the processed product, which is fitted onto the mold column, off.
[0020] For example, in at least one embodiment of the present invention, a tire protection chain forming device further includes:
[0021] The mold column end face has a guide rod, which has an angle with the horizontal plane. The guide rod is used to convey the product pushed down by the feeding push rod.
[0022] For example, in at least one embodiment of the present invention, a tire protection chain forming device further includes:
[0023] The support is provided with a feeding trough, which is V-shaped. A feeding pusher is slidably provided on the support, which can push the bar material in the feeding trough onto the forming block.
[0024] For example, in at least one embodiment of the present invention, a tire protection chain forming device further includes:
[0025] The inner wall of the feeding trough is equipped with multiple rollers that are used to abut against the bar stock.
[0026] For example, in at least one embodiment of the present invention, a tire protection chain forming device further includes:
[0027] A storage box is provided above the feeding trough. The storage box is used to vertically store multiple bars and to drop them into the feeding trough below. The feeding pusher is configured to prevent the bars in the storage box above from falling while pushing them out of the feeding trough.
[0028] The beneficial effects of the embodiments of this utility model are as follows:
[0029] In this invention, during processing, the bar stock is first placed on the forming block, with both ends of the bar stock supported by the two ends of the forming block. A support rod abuts against the middle of the bar stock, providing additional central support and enhancing the stability of the bar stock in its initial state. Subsequently, an external power mechanism drives the forming block to slide towards the mold pillar, bringing the bar stock closer to the mold pillar. When the bar stock contacts the mold pillar, the middle of the bar stock is initially resisted by the mold pillar, causing bending deformation. As the forming block continues to approach the mold pillar, both ends of the bar stock gradually bend upwards under the compression of the forming block, at which point the bending force on the middle of the bar stock continuously increases. The elastic element is gradually compressed as the bar stock bends, causing the support rod to slowly retract into the forming block. Throughout the entire bending process, the support rod remains abutting against the middle of the bar stock under the action of the elastic element, providing support to the middle of the bar stock and preventing displacement due to lack of support. Attached Figure Description
[0030] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this utility model and these drawings without any creative effort.
[0031] Figure 1 This is a schematic diagram of the structure of a tire protection chain forming device in one embodiment of the present invention;
[0032] Figure 2 for Figure 1 A schematic diagram of the external structure of the molding block in the embodiment;
[0033] Figure 3 for Figure 1 A schematic diagram of the internal structure of the molding block in the embodiment;
[0034] Figure 4 for Figure 1 A schematic diagram of the structure on the back of the support plate in the embodiment;
[0035] Figure 5 for Figure 1 A schematic diagram of the structure of the feeding trough in the embodiment;
[0036] Figure 6 for Figure 1 A front view of the feeding trough in one embodiment;
[0037] Figure 7 for Figure 1 A schematic diagram of the bar stock before bending in the embodiment;
[0038] Figure 8 for Figure 1 A schematic diagram of the bar stock being bent into a U-shape in the embodiment;
[0039] Figure 9 for Figure 1 The illustration shows a bar stock bent into an O-shape in one of the embodiments.
[0040] In the diagram: 1. Bracket, 2. Mold column, 3. Molding block, 4. Support rod, 5. Elastic element, 6. Support groove, 7. Molding roller, 8. Swing arm, 9. Extrusion roller, 10. Telescopic cylinder, 11. Guide hole, 12. Material discharge push rod, 13. Guide rod, 14. Material loading trough, 15. Material loading push plate, 16. Roller, 17. Material storage box. Detailed Implementation
[0041] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit its scope.
[0042] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."
[0043] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0044] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0045] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0046] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0047] like Figures 1-9As shown, a tire protection chain forming device according to an embodiment of the present invention is shown, which is used to process bar stock into chain links. The tire protection chain forming device of this embodiment aims to solve the problems of easy displacement and low forming quality of bar stock when bending during the existing chain link manufacturing process.
[0048] The overall structure of the device mainly includes a support frame 1, a mold column 2, a forming block 3, a support rod 4, and an elastic element 5. The support frame 1 serves as the basic support structure for the entire device, providing a platform for the installation and fixation of other components. The mold column 2 is mounted on the support frame 1 and is a column. The forming block 3 is slidably mounted on the support frame 1, and is arc-shaped, with its arc matching the outer contour of the mold column 2. The forming block 3 can drive the bar stock to contact the mold column 2, causing the bar stock to gradually deform into a U-shape. A groove is formed in the forming block 3, and the support rod 4 slides within the groove. The top end of the support rod 4 supports the middle of the bar stock, while the bottom end connects to the elastic element 5. The elastic element 5 is installed at the bottom of the groove, providing an upward sliding force for the support rod 4.
[0049] During processing, the bar stock is first placed on the forming block 3, with both ends supported by the forming block 3. The support rod 4 rests against the middle of the bar stock, providing additional central support and enhancing its stability in the initial state. Subsequently, an external power mechanism drives the forming block 3 to slide towards the mold pillar 2, bringing the bar stock closer to it. When the bar stock contacts the mold pillar 2, the middle of the bar stock is initially resisted by the mold pillar 2, causing it to bend. As the forming block 3 continues to approach the mold pillar 2, both ends of the bar stock gradually bend upwards under the pressure of the forming block 3, at which point the bending force on the middle of the bar stock continuously increases. The elastic element 5 is gradually compressed as the bar stock bends, causing the support rod 4 to slowly retract into the forming block 3. Throughout the entire bending process, the support rod 4 remains against the middle of the bar stock under the action of the elastic element 5, providing support and preventing displacement due to lack of support.
[0050] In some examples, two support rods 4 are set and symmetrically arranged on the forming block 3 to provide support force on both sides of the middle of the bar stock simultaneously, ensuring that the supporting force on the bar stock is uniform. An arc-shaped support groove 6 is designed at the top of the support rod 4 to guide and position it. The inner wall of the support groove 6 can fit against the bar stock to keep the bar stock stable and achieve more stable support.
[0051] In some examples, forming rollers 7 are rotatably mounted at both ends of the forming block 3. These forming rollers 7 roll along with the bar stock as it moves, avoiding direct sliding friction between the forming block 3 and the bar stock, and reducing scratches, wear, and other damage to the bar stock surface caused by friction. Simultaneously, an arc-shaped groove that conforms to the outer circle of the bar stock is formed on the circumference of the forming roller 7. Before bending begins, both ends of the bar stock can be placed within this arc-shaped groove, whose shape matches the outer circle of the bar stock, providing stable support. During bending, as the bar stock gradually bends and deforms, the arc-shaped groove constrains and restricts the bar stock, guiding it during bending and preventing deviation.
[0052] In some examples, two swing arms 8 are symmetrically arranged on the support 1. The swing arms 8 can swing on the support 1, allowing the extrusion roller 9 to move closer to or away from the U-shaped bar on the die post 2. The swing end of the swing arm 8 rotates to set the extrusion roller 9, which can reduce the frictional resistance between the extrusion roller 9 and the bar during the extrusion process, ensuring a smoother extrusion process. The circumference of the extrusion roller 9 has an arc-shaped groove that fits with the outer circle of the bar. During the extrusion process, the arc-shaped groove fits with the outer circle of the bar, ensuring that the extrusion pressure is evenly distributed on the bar. During bending, the forming block 3 first bends the bar into a U-shape. Then, the forming block 3 remains stationary, positioning the U-shaped bar on the die post 2. Then, the swing arm 8 drives the extrusion roller 9 to move closer to the U-shaped bar on the die post 2. The extrusion roller 9 abuts against and squeezes inward the two ends of the U-shaped bar, so that the two ends of the bar gradually fit with the die post 2, thereby transforming the U-shaped bar into an O-shape, obtaining the final product.
[0053] In some examples, the two ends of the telescopic cylinder 10 are hinged to the support 1 and the swing end of the swing arm 8, respectively. The telescopic cylinder 10 pushes or pulls the swing arm 8 through its own telescopic movement. When the telescopic cylinder 10 extends, it pushes the swing arm 8 to swing around its connection point with the support 1, causing the extrusion roller 9 at the swing end of the swing arm 8 to move closer to the U-shaped bar on the die column 2, thereby extruding the bar; when the telescopic cylinder 10 retracts, it pulls the swing arm 8 to swing in the opposite direction, causing the extrusion roller 9 to move away from the formed O-ring chain link, so as to perform the next processing operation.
[0054] In some examples, after the bar stock has undergone a series of processing steps and been formed into the final product on the mold pillar 2, it needs to be removed from the mold pillar 2 for collection. Manual operation is slow and cannot meet the efficiency requirements of large-scale production. To address this, a guide hole 11 is made on the support 1, and a discharge push rod 12 is installed in the guide hole 11 and can slide within it. The discharge push rod 12 is driven by a telescopic component installed on the back of the support 1. After the product is processed on the mold pillar 2, the telescopic component is activated, pushing the discharge push rod 12 forward along the guide hole 11. After the discharge push rod 12 protrudes from the guide hole 11, its end contacts the product fitted on the mold pillar 2 and applies a pushing force, pushing the product off the mold pillar 2. The pushed-off product slides along the inclined guide rod 13, using gravity to guide the product to slide down naturally, and finally falls into the pre-placed tray below, completing the entire discharge process.
[0055] In some examples, the forming block 3 needs to be fed before bending. Manual feeding is slow and cannot meet the needs of large-scale production. Moreover, it is difficult to ensure the accuracy of the feeding position, which affects the quality stability of subsequent bending.
[0056] For this purpose, a V-shaped feeding trough 14 is provided on the support 1. The V-shaped design helps to position the bar stock within the trough and ensures its stability. The feeding pusher 15 can slide on the support 1 and is driven to move by a telescopic component installed on the front of the support 1. After the feeding pusher 15 slides, it pushes the bar stock located in the feeding trough 14 onto the forming block 3, preparing it for subsequent bending work.
[0057] Multiple rollers 16 are rotatably mounted on the inner wall of the feeding trough 14, and the rollers 16 contact the bar stock. When the bar stock moves in the feeding trough 14, the rollers 16 roll, which transforms the sliding friction between the bar stock and the trough into rolling friction, making the bar stock feeding process smoother and reducing the surface damage to the bar stock that may be caused by friction.
[0058] The storage box 17 is positioned above the feeding trough 14 and is used to vertically store multiple bar stock. The bar stock falls into the feeding trough 14 under its own weight. When the feeding pusher 15 pushes the bar stock out of the feeding trough 14, the top surface of the pusher 15 blocks the bar stock in the storage box 17, preventing it from falling. After the pusher 15 completes its feeding action and resets, the bar stock in the storage box 17 is no longer obstructed, and a new bar stock automatically falls into the feeding trough 14 under gravity, achieving automatic dropping. This cycle ensures the continuity and automation of the feeding process.
[0059] Automatic feeding and unloading reduces manual intervention. The storage box 17 continuously supplies bar stock, and the feeding pusher 15 pushes the bar stock to the forming block 3. The whole process is seamless, shortening the feeding time and improving overall production efficiency. The rollers 16 avoid scratches, wear and other defects on the surface of the bar stock caused by sliding friction, ensuring the surface quality of the bar stock.
[0060] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.
Claims
1. A tire protector chain forming apparatus characterized by comprising: This assembly is used to process bar stock into chain links and includes a support (1), a die column (2), a forming block (3), a support rod (4), and an elastic element (5). The die column (2) is mounted on the support (1), and the forming block (3) is slidably mounted on the support (1). The forming block (3) is arc-shaped and matches the outer contour of the die column (2). The two ends of the forming block (3) are used to support the two ends of the bar stock. The forming block (3) is configured to move the bar stock closer to and abut against the die column (2) so that the bar stock is deformed into a U-shape. The support rod (4) is slidably disposed on the molding block (3) to support the middle part of the bar stock. The two ends of the elastic member (5) act on the support rod (4) and the molding block (3) respectively to provide the support rod (4) with force close to the bar stock. The support rod (4) is configured to retract to the molding block (3) after the bar stock contacts the mold post (2) so that the bar stock fits against the mold post (2).
2. A tyre chain forming apparatus according to claim 1, wherein The support rods (4) are two in number and arranged symmetrically. The top of the support rods (4) has a support groove (6), which is arc-shaped.
3. A tire protection chain forming apparatus according to claim 1, wherein The forming block (3) has forming rollers (7) rotatably installed at both ends. The forming rollers (7) have arc-shaped grooves on their circumference for fitting the outer circle of the bar material.
4. A tire protection chain forming apparatus according to claim 1, wherein The support (1) is provided with two swing arms (8) symmetrically arranged on both sides of the mold column (2). The swing ends of the swing arms (8) are rotatably provided with extrusion rollers (9). The extrusion rollers (9) have arc-shaped grooves on their circumference for fitting the outer circle of the bar stock. The extrusion roller (9) is configured to abut against and extrude the U-shaped bar on the die column (2) under the drive of the swing arm (8) so that the bar is deformed into an O-shape.
5. A tyre chain forming apparatus according to claim 4, wherein It also includes a telescopic cylinder (10), the two ends of which are respectively hinged to the support (1) and the swing end of the swing arm (8), and the telescopic cylinder (10) is used to drive the swing arm (8) to swing.
6. A tire protection chain forming apparatus according to claim 1, wherein The bracket (1) has a guide hole (11), and a feeding push rod (12) is slidably disposed in the guide hole (11). The feeding push rod (12) is used to push down the processed product that is fitted on the mold column (2).
7. A tyre chain forming apparatus according to claim 6, wherein The mold column (2) has a guide rod (13) on its end face. The guide rod (13) has an angle with the horizontal plane. The guide rod (13) is used to convey the product pushed down by the feeding push rod (12).
8. A tire protection chain forming apparatus according to claim 1, wherein The support (1) is provided with a feeding trough (14), which is V-shaped. A feeding pusher (15) is slidably provided on the support (1). The feeding pusher (15) can push the bar material in the feeding trough (14) onto the forming block (3).
9. A tyre chain forming apparatus according to claim 8, wherein The inner wall of the feeding trough (14) is provided with multiple rollers (16), which are used to abut against the bar stock.
10. A tyre chain forming apparatus according to claim 8, wherein A storage box (17) is provided above the feeding trough (14). The storage box (17) is used to store multiple bars vertically and drop them into the feeding trough (14) below. The feeding push plate (15) is configured to block the bars in the storage box (17) from falling while pushing out the bars in the feeding trough (14).