Three-dimensional structural body forming traction mechanism

Abstract

The utility model discloses a three-dimensional structural body forming traction mechanism, which belongs to the technical field of plastic forming equipment, and comprises two roller groups, the two roller groups are symmetrically arranged, and crawler belts in the two roller groups rotate oppositely to form traction channels with consistent traction width and consistent traction speed; each roller set comprises two traction rollers, the two traction rollers are arranged in the crawler belt in a sleeved mode, and the crawler belt is driven to rotate in a tooth chain transmission mode so that the traction speed of the traction channel can be kept consistent; supporting rollers are arranged on the portions, close to one side of the traction channel, of the two roller sets, and the supporting rollers are supported on the tracks to maintain the consistency of the traction width of the traction channel, so that the consistency of the forming thickness and density of the three-dimensional structural body is guaranteed.

Description

Technical Field

[0001] This utility model belongs to the technical field of three-dimensional structure material forming equipment, specifically, it relates to a three-dimensional structure forming traction mechanism. Background Technology

[0002] Spring-structured resin molded products are three-dimensional structures with a certain bulk density and porosity. These structures are formed by thermoplastic resin and / or thermoplastic elastomers, which are bonded together through contact, interweaving, and aggregation to create solid and / or hollow rings or coiled shapes. These three-dimensional structures possess excellent elasticity and breathability, making them a novel type of elastic pad material. The molding process involves vertically flowing molten sprayed ribbon from a die head. Upon encountering the molding device, the ribbons twist and intertwine, and the resulting ribbons undergo further cooling and shaping in a water bath.

[0003] The traction mechanism continuously feeds the wound sprayed ribbon into the bottom of the pool. Simultaneously, the wound ribbon requires a stable traction channel to maintain its shape during traction, ensuring consistent thickness of the formed three-dimensional structure. Furthermore, the traction speed must remain consistent across all parts of the traction channel; inconsistent speeds can lead to delamination within the three-dimensional structure, affecting its uniformity. This invention provides a three-dimensional structure forming traction mechanism that maintains a stable traction channel width and traction speed during the traction process, thereby ensuring consistent thickness and structural uniformity in the formed three-dimensional structure. Utility Model Content

[0004] 1. The problem to be solved

[0005] To address the problem of inconsistent thickness in three-dimensional structures during traction shaping in existing technologies, this invention provides a three-dimensional structure forming traction mechanism that solves the aforementioned technical problem by setting support rollers on the traction rollers and the track.

[0006] 2. Technical Solution

[0007] To solve the above problems, the present invention adopts the following technical solution:

[0008] A three-dimensional structure forming traction mechanism includes two roller groups, which are symmetrically placed. The tracks in the two roller groups rotate towards each other to form a traction channel with the same traction width and traction speed.

[0009] Each roller assembly includes two traction rollers, which are fitted inside the track and drive the track to rotate via a toothed chain drive to keep the traction speed of the traction channel consistent.

[0010] Support rollers are provided on the track near the traction channel side of the two roller sets. The support rollers are supported on the track to maintain the consistency of the traction width of the traction channel.

[0011] Preferably, the two traction rollers are a driving roller and a driven roller, respectively, and the driving roller is driven by an electric motor to rotate the track.

[0012] Preferably, the driving roller and the driven roller each include at least two first gears, and all the first gears are fixedly coaxially connected by a first rotating shaft; the number of first gears on the driving roller and the driven roller are the same and correspond one-to-one.

[0013] Preferably, the track includes several U-shaped long strips and multiple first chains, and the long strips are fixed in sequence along the first chains by fixing seats to form a closed loop track.

[0014] Preferably, the fixing base includes a base plate fixed to one side of the open end of the long strip, and a fixing plate bolted to the base plate. The fixing plate includes two parallel L-shaped plates so that the joint of the first chain engages between the two L-shaped plates.

[0015] Preferably, the number of the first chains is the same as the number of the first gears on the drive roller, and each of the first chains meshes with the first gears corresponding to the drive roller and the driven roller.

[0016] Preferably, the support roller includes the same number of second gears as the first gear, and all the second gears are coaxially connected by a second rotating shaft, which is fixed to the bracket.

[0017] Preferably, each of the second gears meshes on one side of the corresponding first chain, with the meshing point located on one side of the traction channel.

[0018] Preferably, a third gear is fixed to the end of the driving roller or driven roller, and the third gear is connected to the fourth gear on the motor through a second chain toothed chain.

[0019] Preferably, the second chain is connected to a fifth gear for adjusting the tension of the second chain.

[0020] 3. Beneficial effects

[0021] (1) This utility model adopts two roller groups placed symmetrically, wherein the active roller and the driven roller are driven by a toothed chain drive to drive the tracks in the two roller groups to rotate in opposite directions. At the same time, a support roller is provided on the track of the two roller groups near the traction channel, so that the traction width and traction speed of the formed traction channel can be kept consistent, thereby ensuring the consistency of the thickness and density of the three-dimensional structure.

[0022] (2) The track in this utility model uses a U-shaped long strip plate, which can not only increase the track's resistance to bending, but also reduce the track's weight and reduce production costs.

[0023] (3) In this utility model, multiple first chains are connected to the track. Each first chain is connected to the first gear of the drive roller and the driven roller. When the drive roller and the driven roller rotate, each first gear on the drive roller can drive the track area corresponding to each first chain to rotate synchronously at the same speed. This makes the density distribution of the sprayed ribbon more uniform when the three-dimensional structure is formed, and the three-dimensional structure is formed with consistent density, reducing the defect rate.

[0024] (4) This utility model uses support rollers to support the track, which can prevent the track from generating sliding friction at the support part, thereby preventing the track from crawling and improving the molding quality of the three-dimensional structure.

[0025] (5) Both ends of the driving roller and the driven roller are connected to electric motors. A total of four electric motors drive the entire traction mechanism synchronously, which reduces the force on a single motor, makes the force on the entire traction mechanism more even, and reduces the occurrence of jamming. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the roller assembly structure of this utility model;

[0027] Figure 2 This is a schematic diagram of the structure of the driving roller, driven roller, and support roller of this utility model;

[0028] Figure 3 This is a schematic diagram showing the connection between the track and the driving roller, driven roller and support roller of this utility model;

[0029] Figure 4 This is a schematic diagram of the fixing base structure of this utility model;

[0030] Figure 5 This is a schematic diagram of the long strip plate structure of this utility model;

[0031] Figure 6 This is a schematic diagram of the four-motor drive structure of this utility model;

[0032] In the picture:

[0033] 100. Roller assembly;

[0034] 10. Track; 101. Long strip; 102. First chain; 103. Mounting base; 1031. Base plate; 1032. Mounting plate;

[0035] 20. Traction channel;

[0036] 30. Traction roller; 31. Drive roller; 311. First gear; 312. First shaft; 32. Driven roller;

[0037] 40. Support roller; 401. Second gear; 402. Second shaft;

[0038] 50. Electric motor;

[0039] 60. The third gear;

[0040] 70. The fourth gear;

[0041] 80. The second chain;

[0042] 90. The fifth gear. Detailed Implementation

[0043] The following detailed description of exemplary embodiments of the present invention refers to the accompanying drawings, which form part of the description, illustrating exemplary embodiments in which the present invention may be implemented. Although these exemplary embodiments have been described in sufficient detail to enable those skilled in the art to implement the present invention, it should be understood that other embodiments may be implemented and various changes may be made to the present invention without departing from the spirit and scope thereof. The more detailed description of embodiments of the present invention below is not intended to limit the scope of the claimed invention, but is merely illustrative and does not limit the description of the features and characteristics of the invention, in order to suggest the best mode for carrying out the invention and sufficient to enable those skilled in the art to implement it. Therefore, the scope of the present invention is defined only by the appended claims.

[0044] To address the above issues, the following explanation is provided in conjunction with the accompanying drawings:

[0045] Three-dimensional structural materials are materials with a certain degree of porosity and elasticity formed by winding and bonding several plastic filaments. They are currently widely used in home decoration, such as mattresses and pillow cores.

[0046] like Figure 1 As shown, this utility model provides a three-dimensional structure forming traction mechanism, including two roller groups 100, which are symmetrically placed to form a traction channel 20 between them. The traction channel 20 is located within a cooling water tank and is vertically downward. The inlet of the traction channel 20 is directly opposite the water inlet of the sprayed ribbon. The wound sprayed ribbon is pulled through the traction channel 20 and drawn into the water tank for cooling. During the traction process, the sprayed ribbon is shaped to form a three-dimensional structural material of uniform thickness.

[0047] The roller assembly 100 includes two traction rollers 30 and a track 10. The two traction rollers 30 are divided into a driving roller 31 and a driven roller 32, which are placed vertically. The track 10 is connected end to end to form a closed loop structure. The track 10 is respectively fitted onto the driving roller 31 and the driven roller 32, and the driving roller 31 drives the entire track 10 to rotate. When the tracks 10 of the two roller assemblies 100 rotate in opposite directions, a traction channel 20 is formed for the traction of material (three-dimensional structure) into the water.

[0048] The drive roller 31 includes at least two first gears 311, all of the same size. In one embodiment, the drive roller 31 involves four first gears 311, which are coaxially connected by a first rotating shaft 312, allowing the first rotating shaft 312 to simultaneously drive all four first gears 311 to rotate synchronously. The driven roller 32 has the same number of first gears 311 as the drive roller 31, and the first gears 311 on both rollers correspond one-to-one (one first gear 311 on the drive roller 31 corresponds to one first gear 311 on the driven roller, and both are on the same plane).

[0049] The track 10 includes several long strips 101 and multiple first chains 102, the number of which is the same as the number of first gears 311 of the drive roller 31. The long strips 101 are made of ordinary steel plates bent to form U-shaped cross-sections. The U-shaped cross-section of the long strips 101 enhances their bending resistance, making them less prone to bending and deformation under stress. The open ends of the long strips 101 are connected to the joints of the first chains 102 via fixing seats 103. The fixing seat 103 includes a base plate 1031 and fixing plates 1032. The base plate 1031 is a rectangular plate, one side of which is fixed (welded) to the opening of the long strips 101. Two fixing plates 1032 are bolted to the base plate 1031. The two fixing plates 1032 are L-shaped plates, placed parallel to each other on the base plate 1031, forming a gap. The first chain 102 passes through the gap between two fixing plates 1032, and the two ends of the joint of the first chain 102 are engaged in the through holes of the two fixing plates 1032, thereby fixing the first chain 102. Multiple first chains 102 are fixed on each long strip 101, and several long strips 101 are fixed along the first chains 102 to form a closed-loop track 10. Each track 10 is correspondingly fitted onto the first gear 311 of the driving roller 31 and the driven roller 32, realizing the toothed chain connection between the traction roller 30 and the track 10. The traction roller 30 drives the track 10 to rotate in a closed loop through the toothed chain transmission. The driving roller 31 and the driven roller 32 drive the track 10 to rotate through the toothed chain meshing transmission, which has the advantage of avoiding slippage between the driving roller 31 and the driven roller 32 and the track 10. Furthermore, since multiple first chains 102 are connected to the track 10, and each first chain 102 is connected to the first gear 311 of the driving roller 31 and the driven roller 32, when the driving roller 31 and the driven roller 32 rotate, each first gear 311 on the driving roller 31 can drive the corresponding area of ​​the track 10 of each first chain 102 to rotate synchronously. The synchronous rotation of the track 10 ensures a more uniform distribution of the sprayed ribbon line density during the molding of the three-dimensional structure, reducing the defect rate.

[0050] During operation, to prevent the track 10 from being deformed by material compression, thus affecting the consistency of the three-dimensional structure's forming thickness, a support roller 40 is installed between the driving roller 31 and the driven roller 32. The support roller 40 includes the same number of second gears 401 as the first gears 311 of the driving roller 31. All second gears 401 are coaxially connected via a second rotating shaft 402. The second rotating shaft 402 is fixed to a bracket, enabling the support roller 40 to provide support. Each second gear 401 engages on one side of its corresponding first chain 102, with the engagement position located on one side of the traction channel 20. This one-sided engagement allows the track 10 to be supported while reducing the size of the second gear 401, thereby minimizing its impact on the track 10. Using the support roller 40 to support the track 10 prevents sliding friction at the support points, thus avoiding crawling and ensuring the quality of the three-dimensional structure's forming.

[0051] The traction roller 30 is driven by the drive roller 31. A third gear 60 is fixedly connected to the end of the drive roller 31, and a fourth gear 70 is connected to the motor 50. The third gear 60 and the fourth gear 70 are connected via a second chain 80. When the motor 50 rotates, it drives the drive roller 31 to rotate via the second chain 80. A fifth gear 90 is connected to the second chain 80 and is movably connected to a support. The fifth gear 90 adjusts the tension of the second chain 80 by sliding on the support, preventing the second chain 80 from becoming too loose and slipping. To avoid uneven force on the drive roller 31 when driving it, a third gear 60 and its corresponding motor 50 are provided at both ends of the drive roller 31 to synchronously drive its rotation.

[0052] The preferred solution is to connect a motor 50 to the driven roller 32. When motors 50 are connected to both ends of the driven roller 32, they, together with the motors 50 connected to both ends of the driving roller 31, form a system of four motors 50 driving synchronously. This reduces the driving force of a single motor 50, making the force on the entire traction mechanism more even and reducing the occurrence of jamming.

[0053] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A three-dimensional structure molding traction mechanism comprising two roller groups (100) placed symmetrically, characterized in that, The caterpillar (10) in two roller groups (100) rotates towards each other to form a traction channel (20) with consistent traction width and traction speed; Each roller group (100) includes two traction rollers (30) which are nested in the caterpillar (10) and drive the caterpillar (10) to rotate by a gear chain transmission mode so as to keep the traction speed of the traction channel (20) consistent. The caterpillar (10) on one side of the traction channel (20) of the two roller groups (100) is provided with a support roller (40) which supports on the caterpillar (10) to maintain the consistency of the traction width of the traction channel (20).

2. The three-dimensional structure molding draft mechanism according to claim 1, wherein The two traction rollers (30) are respectively a driving roller (31) and a driven roller (32), and the driving roller (31) and / or the driven roller (32) are driven by a motor (50) to drive the caterpillar (10) to rotate.

3. The three-dimensional structure molding traction mechanism according to claim 2, wherein The driving roller (31) and the driven roller (32) include at least two first gears (311), and all the first gears (311) are coaxially connected by a first rotating shaft (312); the first gears (311) on the driving roller (31) and the driven roller (32) are the same in number and one-to-one corresponding.

4. The three-dimensional structure molding traction mechanism according to claim 3, wherein The caterpillar (10) includes a plurality of U-shaped long plates (101) and a plurality of first chains (102), and a plurality of long plates (101) are sequentially fixed along the first chains (102) by fixing seats (103) to form a closed-loop caterpillar (10).

5. The three-dimensional structure molding traction mechanism according to claim 4, wherein The fixing seat (103) includes a bottom plate (1031) fixed on one side of the opening end of the long plate (101) and a fixing sheet (1032) bolted on the bottom plate (1031), and the fixing sheet (1032) includes two parallel L-shaped plates to enable the joints of the first chain (102) to be clamped between the two L-shaped plates.

6. The three-dimensional structure molding traction mechanism according to claim 4, wherein The number of the first chains (102) is the same as the number of the first gears (311) on the driving roller (31), and each first chain (102) is engaged on the corresponding first gears (311) of the driving roller (31) and the driven roller (32).

7. The three-dimensional structure molding traction mechanism according to claim 4, wherein The support roller (40) includes a second gear (401) which is the same in number as the first gear (311), and all the second gears (401) are coaxially connected by a second rotating shaft (402) which is fixed on a bracket.

8. The three-dimensional structure molding traction mechanism according to claim 7, wherein Each second gear (401) is engaged on the corresponding first chain (102) on one side of the traction channel (20).

9. The three-dimensional structure molding traction mechanism according to claim 2, wherein The end of the driving roller (31) or the driven roller (32) is fixed with a third gear (60), and the third gear (60) is connected to a fourth gear (70) on the motor (50) by a second chain (80) gear chain.

10. The three-dimensional structure molding traction mechanism according to claim 9, wherein The fifth gear (90) is connected to the second chain (80) gear chain to adjust the tension of the second chain (80).

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