Automatic production device for polyurethane bar products

Abstract

The utility model belongs to the technical field of polyurethane material processing, and particularly relates to an automatic production device for polyurethane bar products. The device comprises a rack, wherein circulating chains which are driven by a motor to move synchronously are symmetrically arranged on the two sides of the rack; a plurality of forming molds with containing grooves are arranged between the two circulating chains at intervals in the advancing direction. A first portal frame is further arranged on the rack in a crossing mode, and a polyurethane pouring opening is formed in the first portal frame and used for pouring polyurethane materials to the forming mold moving to the pouring station; a thermocuring bin for accommodating part of the circulating chain is further mounted on the rack, and a hot atmosphere is formed in the thermocuring bin; the polyurethane material in the forming mold is heated and cured in the thermocuring bin; and a turnover mechanism is further arranged on the rack and is used for turning over the forming die leaving the thermocuring bin, so that the formed polyurethane bar product falls into a collecting area. According to the utility model, the production efficiency and the product consistency are obviously improved, the manual intervention is reduced, and the safety risk of high-temperature operation is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of polyurethane material processing technology, specifically relating to an automatic production device for polyurethane rod products. Background Technology

[0002] Polyurethane materials are widely used in many fields due to their excellent physical and chemical properties, such as high strength, high toughness, good wear resistance, oil resistance and excellent insulation properties. They are used to manufacture various parts, seals and insulating components.

[0003] Existing polyurethane rod production methods have many shortcomings. Traditional manual or semi-automatic production models are inefficient and cannot meet the demands of large-scale industrial production. Numerous manual operations not only lead to poor product consistency and inconsistent quality, but also pose significant safety risks to workers during high-temperature casting and curing processes, increasing the risk of burns and other accidents. Furthermore, prolonged close contact with various chemicals can also pose potential health threats.

[0004] Therefore, there is an urgent need for a device that can achieve automated, efficient, safe and stable production of polyurethane rod products, in order to overcome the various drawbacks of existing production methods and improve production levels and product quality. Utility Model Content

[0005] In view of the shortcomings of the existing technology, this utility model provides an automatic production device for polyurethane rod products, with the aim of realizing the automated, efficient, safe and stable production of polyurethane rods.

[0006] The automatic production device for polyurethane rod products provided by this utility model includes a frame with symmetrically arranged circulating chains driven synchronously by motors on both sides; multiple molding molds with receiving grooves are arranged at intervals between the two circulating chains along the traveling direction, and both ends of the molding molds are rotatably connected to the circulating chains; a first gantry frame is also installed across the frame, and the first gantry frame is equipped with a polyurethane pouring port to pour polyurethane material into the molding molds that move to the pouring station; a thermosetting chamber for accommodating part of the circulating chains is also installed on the frame, and the thermosetting chamber contains a hot atmosphere; the polyurethane material in the molding mold is cured by heat in the thermosetting chamber; a flipping mechanism is also provided on the frame to flip the molding molds that leave the thermosetting chamber, so that the molded polyurethane rod products fall into the collection area.

[0007] As a further optimization, a second gantry is installed on the frame, upstream of the first gantry along the direction of the circulating chain; a transverse translation module is installed on the second gantry to drive the atomizing nozzle to reciprocate along the direction perpendicular to the direction of the circulating chain, and the atomizing nozzle sprays release agent onto its receiving tank.

[0008] As a further optimization, a third gantry is installed on the frame, downstream of the first gantry along the direction of the circulating chain; a transverse translation module is installed on the third gantry to drive the flame nozzle to reciprocate along the direction perpendicular to the direction of the circulating chain, and the flame nozzle performs flame treatment on the surface of the polyurethane material that has been poured to eliminate surface bubbles generated during the pouring process.

[0009] As a further optimization, a transverse translation module is installed on the first gantry, a longitudinal translation module is installed on the transverse translation module, and a polyurethane injection port is installed on the longitudinal translation module.

[0010] As a further optimization, a rotating follower gear is fixed at one end of the molding die; a rotating rack is fixedly installed in the collection area; when the molding die moves to the position where it meshes with the rotating rack, the rotating follower gear meshes with the rotating rack, thereby driving the molding die to rotate.

[0011] As a further optimization, the circulating chain is arranged in a serpentine path within the thermosetting chamber, with turnaround guide wheels installed at the turnaround points of the circulating chain.

[0012] As a further optimization, a tension adjustment device is provided at at least one turnaround point of each circulating chain; the tension adjustment device includes a fixed frame, a sliding frame, and an adjusting screw; the fixed frame is fixedly installed on the machine frame, the sliding frame is slidably installed on the fixed frame, a turnaround guide wheel is installed on the sliding frame, and the adjusting screw is connected between the fixed frame and the sliding frame; the rotation of the adjusting screw drives the sliding frame to slide along the fixed frame, thereby adjusting the tension of the circulating chain.

[0013] As a further optimization, guide rails are also installed on the rack, which are set along the travel path of the circulating chain and supported below the circulating chain.

[0014] As a further optimization, the chain plate of the circulating chain is equipped with a rotating shaft, and the rotating shaft is equipped with a swing block. The swing block is installed at the end of the forming mold. When the forming mold is in a stable position with the minimum gravitational potential energy, the opening of the receiving groove faces upward.

[0015] As a further optimization, a support wheel is also installed at the bottom of the forming mold, and at least one end of the forming mold has two support wheels arranged in the front-to-back direction; a support rail is also installed on the frame, and the support rail is set along the travel path of the support wheel and supports the support wheel below.

[0016] Beneficial effects

[0017] The automatic production device for polyurethane rod products provided by this utility model enables continuous cyclic conveying of the molding die, combined with continuous casting, thermosetting and automatic flipping demolding, to form a highly efficient automated production line, which significantly improves production efficiency and product consistency, while reducing manual intervention and lowering the safety risks of high-temperature operation.

[0018] In addition, upstream of the casting station, atomizing nozzles on the second gantry uniformly spray the release agent, avoiding the unevenness and health hazards of manual application. Downstream of the casting station, flame nozzles on the third gantry flame-treat the polyurethane material surface, eliminating surface bubbles, reducing surface roughness, and improving product quality. The mold's tilting mechanism uses a gear and rack meshing method, ensuring stable and reliable tilting. The serpentine path arrangement and tension adjustment device of the circulating chain within the curing chamber extend the curing time while ensuring stable chain tension. The coordination of guide rails, support wheels, and support rails enhances the stability of the mold during travel. Through the optimization of the entire production process, production efficiency, product quality, and the safety and stability of the production process are improved. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of an automated production device for polyurethane rods.

[0020] Figure 2 This is a schematic diagram of a circular chain.

[0021] Figure 3 This is a schematic diagram showing the connection between the circulating chain and the forming mold.

[0022] Figure 4 for Figure 3 A magnified view of a portion of the image.

[0023] Figure 5 This is a schematic diagram of the tension adjustment device.

[0024] Figure 6 This is a schematic diagram showing the engagement of the rotating follower gear and the rotating rack.

[0025] In the diagram, 1 is the frame; 2 is the circulating chain; 3 is the molding mold; 4 is the first gantry; 5 is the thermosetting chamber; 6 is the second gantry; 7 is the third gantry; 11 is the guide rail; 12 is the support rail; 21 is the return guide wheel; 22 is the rotating shaft; 23 is the swing block; 31 is the receiving groove; 32 is the flip follower gear; 33 is the support wheel; 39 is the flip rack; 81 is the fixed frame; 82 is the sliding frame; and 83 is the adjusting screw. Detailed Implementation

[0026] The present invention is further illustrated by the following embodiments, which are intended to more clearly illustrate the technical solution of the present invention, and should not be construed as a limitation.

[0027] like Figure 1-6 As shown, the automated production device for polyurethane rod products includes a frame 1, which is welded from steel and fixed to the ground at its bottom. Symmetrically arranged on both sides of the frame 1 are synchronously moving circulating chains 2 driven by motors. Each set of circulating chains 2 adopts a double-row roller chain structure, and the circulating chains 2 on both sides achieve synchronous movement through a synchronous shaft between the drive sprockets. Multiple molding dies 3 with receiving grooves 31 are arranged at intervals between the two circulating chains 2 along the direction of travel. Both ends of the molding dies 3 are rotatably connected to the circulating chains 2. As the circulating chains 2 move, the molding dies 3 move along with them, and the molding dies 3 can rotate relative to the circulating chains 2 under external force. A first gantry 4 is also mounted on the frame 1, and the first gantry 4 is equipped with a polyurethane pouring port to pour polyurethane material into the molding die 3 as it moves to the pouring station. The frame 1 is also equipped with a thermosetting chamber 5 that houses part of the circulating chain 2. The thermosetting chamber 5 contains a hot atmosphere, which can be introduced from the outside via a fan or generated by heating air through heating pipes installed inside the chamber. Under the action of the hot atmosphere, the polyurethane material in the molding die 3 can be cured within the thermosetting chamber 5. A tilting mechanism is also provided on the frame 1 to tilt the molding die 3 as it leaves the thermosetting chamber 5, causing the formed polyurethane rod to fall into the collection area under the influence of gravity and the vibration generated by the moving circulating chain 2.

[0028] The device achieves continuous circulation of the molding mold 3 through the synchronous circulation chain 2, and together with continuous casting, thermosetting and automatic flipping demolding, it forms a highly efficient automated production line, which significantly improves production efficiency and product consistency, while reducing manual intervention and lowering the safety risks of high-temperature operation.

[0029] Furthermore, on the frame 1, and located upstream of the first gantry 4 along the direction of travel of the circulation chain 2, a second gantry 6 is straddling it; a transverse translation module is installed on the second gantry 6 to drive the atomizing nozzle to reciprocate along the direction perpendicular to the direction of travel of the circulation chain 2, and the atomizing nozzle sprays release agent onto its receiving groove 31.

[0030] Furthermore, a second gantry 6 is installed upstream of the casting station of frame 1, and this second gantry 6 is equipped with a transverse translation module. The transverse translation module adopts a ball screw mechanism driven by a servo motor, and a pneumatic atomizing nozzle is fixed on its slide. The transverse translation module drives the atomizing nozzle to reciprocate along a direction perpendicular to the travel direction of the circulating chain 2, covering the full width of the receiving groove 31 of the molding mold 3. The atomizing nozzle is connected to a pressure pump and a mold release agent storage tank through a hose. In this way, the atomizing nozzle can evenly spray the mold release agent onto the receiving groove 31, avoiding uneven coating caused by manual application and avoiding potential health threats.

[0031] Furthermore, a third gantry 7 is installed across the frame 1, downstream of the first gantry 4 along the direction of travel of the circulating chain 2. A transverse translation module is mounted on the third gantry 7, driving the flame nozzle to reciprocate in a direction perpendicular to the direction of travel of the circulating chain 2. The flame nozzle is connected to the gas supply system. When the molding die 3 passes by, the flame generated by the flame nozzle performs flame treatment on the surface of the poured polyurethane material, performing instantaneous burning. The thermal shock causes surface bubbles to burst, eliminating surface bubbles generated during the pouring process. Flame treatment eliminates surface bubbles and reduces the surface roughness of the finished product. The reciprocating motion of the flame nozzle is well-suited for continuous production lines, avoiding prolonged localized burning that could lead to material carbonization.

[0032] Furthermore, a lateral translation module is installed on the first gantry 4, and a longitudinal translation module is installed on the lateral translation module. A polyurethane pouring gate is installed on the longitudinal translation module. The lateral translation module moves the polyurethane pouring gate laterally, allowing for rapid pouring within the limited time it takes for the molding die 3 to move below the polyurethane pouring gate. The longitudinal translation module can easily adjust the polyurethane pouring gate to a suitable height, reducing polyurethane splashing.

[0033] Furthermore, a rotating follower gear 32 is fixed to one end of the molding mold 3; a rotating rack 39 is fixedly installed in the collection area; when the molding mold 3 moves to the position where it meshes with the rotating rack 39, the rotating follower gear 32 meshes with the rotating rack 39, thereby driving the molding mold 3 to rotate. As the circulation chain 2 moves, when the rotating follower gear 32 leaves the rotating rack 39, the molding mold 3 returns to its initial position with the opening facing upward under the action of gravity.

[0034] Furthermore, the circulating chain 2 is arranged in a serpentine path within the thermosetting chamber 5, and a turnaround guide wheel 21 is provided at the turnaround point of the circulating chain 2. In this way, the stroke of the circulating chain 2 can be extended within a limited space, thereby increasing the residence time of the molding die 3 during thermosetting, thus balancing space efficiency and process effect.

[0035] Furthermore, at least one turning point of each circulating chain 2 is provided with a tension adjusting device; the tension adjusting device includes a fixed frame 81, a sliding frame 82, and an adjusting screw 83; the fixed frame 81 is fixedly installed on the frame 1, the sliding frame 82 is slidably installed on the fixed frame 81, a turning guide wheel 21 is installed on the sliding frame 82, and the adjusting screw 83 is connected between the fixed frame 81 and the sliding frame 82; the rotation of the adjusting screw 83 drives the sliding frame 82 to slide along the fixed frame 81, thereby adjusting the tension of the circulating chain 2. By providing a tension adjusting device at the turning point of the circulating chain 2, and by rotating the adjusting screw 83 to drive the sliding frame 82 to slide along the fixed frame 81, the position of the turning guide wheel 21 can be flexibly adjusted, thereby controlling the tension of the circulating chain 2, maintaining stable chain tension, and avoiding chain slippage, tooth skipping, or excessive wear due to chain slack.

[0036] Furthermore, a guide rail 11 is also installed on the frame 1. The guide rail 11 is set along the travel path of the circulating chain 2 and supported below the circulating chain 2.

[0037] Furthermore, the chain plate of the circulating chain 2 is provided with a rotating shaft 22, and a swing block 23 is provided on the rotating shaft 22. The swing block 23 is installed at the end of the forming mold 3. When the forming mold 3 is in the stable position with the minimum gravitational potential energy, the opening of the receiving groove 31 faces upward. Through the cooperation of the rotating shaft 22 and the swing block 23, it is ensured that the forming mold 3 always maintains the orientation of the receiving groove 31 facing upward under the action of gravity, thus avoiding material spillage during transportation.

[0038] Furthermore, a support wheel 33 is installed at the bottom of the forming mold 3, and at least one end of the forming mold 3 has two support wheels 33 arranged in a front-to-back direction; a support rail 12 is also installed on the frame 1, which is set along the travel path of the support wheels 33 and supports the support wheels 33 below. By utilizing the cooperation between the support wheels 33 and the support rail 12, the swing of the forming mold 3 is restricted, and the stability of the forming mold 3 during the travel of the circulating chain 2 is enhanced.

[0039] The above embodiments are exemplary and are intended to illustrate the technical concept and features of this utility model, so that those skilled in the art can understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. An apparatus for automatic production of polyurethane rod products, characterized by, The system includes a frame (1) on which symmetrically arranged circulating chains (2) driven by motors move synchronously are arranged on both sides; between the two circulating chains (2) are multiple molding molds (3) with receiving grooves (31) arranged at intervals along the direction of travel, and both ends of the molding molds (3) are rotatably connected to the circulating chains (2); a first gantry frame (4) is also provided across the frame (1), and the first gantry frame (4) is provided with a polyurethane pouring port to pour polyurethane material into the molding molds (3) that move to the pouring station; a thermosetting chamber (5) is also installed on the frame (1) to accommodate part of the circulating chains (2), and the thermosetting chamber (5) has a hot atmosphere; the polyurethane material in the molding molds (3) is cured by heat in the thermosetting chamber (5); a flipping mechanism is also provided on the frame (1) to flip the molding molds (3) that leave the thermosetting chamber (5) so that the molded polyurethane rods fall into the collection area.

2. The apparatus according to claim 1, wherein On the frame (1), and located upstream of the first gantry (4) along the travel direction of the circulation chain (2), a second gantry (6) is straddling it; a transverse translation module is installed on the second gantry (6) to drive the atomizing nozzle to reciprocate along the travel direction perpendicular to the circulation chain (2), and the atomizing nozzle sprays release agent onto its receiving groove (31).

3. The apparatus according to claim 1, wherein On the frame (1), and located downstream of the first gantry (4) along the travel direction of the circulation chain (2), a third gantry (7) is straddling it; a transverse translation module is installed on the third gantry (7) to drive the flame nozzle to reciprocate along the travel direction perpendicular to the circulation chain (2), and the flame nozzle performs flame treatment on the surface of the polyurethane material that has been poured to eliminate surface bubbles generated during the pouring process.

4. The apparatus according to claim 1, wherein A transverse translation module is installed on the first gantry (4), a longitudinal translation module is installed on the transverse translation module, and a polyurethane injection port is installed on the longitudinal translation module.

5. The apparatus according to claim 1, wherein One end of the molding die (3) is fixed with a rotating follower gear (32); a rotating rack (39) is fixedly installed in the collection area; when the molding die (3) moves to the position of meshing with the rotating rack (39), the rotating follower gear (32) meshes with the rotating rack (39), thereby driving the molding die (3) to rotate.

6. The apparatus according to any one of claims 1 to 5, wherein The circulating chain (2) is arranged in a serpentine path within the thermosetting chamber (5), and a turnaround guide wheel (21) is provided at the turnaround point of the circulating chain (2).

7. The apparatus according to claim 6, wherein At least one reversal point of each of the circulating chains (2) is provided with a tension adjustment device; the tension adjustment device includes a fixed frame (81), a sliding frame (82), and an adjusting screw (83); the fixed frame (81) is fixedly installed on the frame (1), the sliding frame (82) is slidably installed on the fixed frame (81), a reversal guide wheel (21) is installed on the sliding frame (82), and the adjusting screw (83) is connected between the fixed frame (81) and the sliding frame (82); the adjusting screw (83) rotates and drives the sliding frame (82) to slide along the fixed frame (81), thereby adjusting the tension of the circulating chain (2).

8. The apparatus according to claim 6, wherein A guide rail (11) is also installed on the frame (1), the guide rail (11) is set along the travel path of the circulation chain (2) and supported below the circulation chain (2).

9. The apparatus according to claim 6, wherein The chain plate of the circulating chain (2) is provided with a rotating shaft (22), and the rotating shaft (22) is provided with a swing block (23). The swing block (23) is installed at the end of the molding mold (3). When the molding mold (3) is in a stable position with the minimum gravitational potential energy, the opening of the receiving groove (31) faces upward.

10. The apparatus according to claim 6, wherein The bottom of the molding die (3) is also equipped with a support wheel (33), and at least one end of the molding die (3) has two support wheels (33) arranged in the front and back directions; a support rail (12) is also installed on the frame (1), and the support rail (12) is set along the travel path of the support wheel (33) and supported under the support wheel (33).

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