A hot-pressing composite device for life jacket production

Abstract

This utility model discloses a hot-pressing composite device for life jacket production, relating to the field of composite device technology. The key technical points are: it includes a frame, a vertically sliding upper mold, and a conveying mechanism for driving the lower mold to move laterally. The fabric positioning and fixing device includes a limiting component, an adsorption component, and a pull-down component. The limiting component is located below the lower mold and includes a support plate and several limiting rods fixedly connected to the support plate. The adsorption component includes a vacuum pump, an air pipe, and multiple adsorption holes. The air pipe is laid inside the lower mold. The pull-down component includes a driving rod connected to the upper mold and a response rod connected to the support plate. A speed-changing part is provided between the driving rod and the response rod, through which the sliding speed of the response rod is greater than the sliding speed of the driving rod. This utility model limits the fabric, preventing the lower mold from moving and causing displacement of the fabric, thus ensuring the accuracy of the position during hot-pressing composite.

Description

Technical Field

[0001] This utility model relates to the field of composite device technology, and more specifically, it relates to a hot-pressing composite device for the production of life jackets. Background Technology

[0002] In the production process of thermoforming life jackets, the fabric sheet must first be precisely placed on the surface of the lower mold. Then, a conveying mechanism transfers the lower mold along with the fabric sheet to the upper mold for thermoforming. However, existing technologies have significant drawbacks: First, during the conveying process, traditional thermoforming equipment is prone to fabric sheet displacement due to vibrations from equipment operation and the inertia of the conveying mechanism during start-up and shutdown. Second, while some equipment incorporates simple limiting structures, these cannot effectively address the need to fix fabric sheets of different specifications and materials, resulting in frequent fabric sheet displacement. Third, fabric sheet displacement directly leads to positional deviations during thermoforming, causing problems such as loose edge adhesion and misalignment of patterns or functional areas. This not only significantly reduces the quality of life jackets but also significantly increases the defect rate and production costs. Therefore, developing a thermoforming equipment that can effectively prevent fabric sheet displacement during conveying is of great significance for improving the production quality and efficiency of thermoforming life jackets.

[0003] Therefore, a new solution is needed to address this problem. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a hot pressing composite device for the production of life jackets.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a hot-pressing composite device for producing life jackets, characterized in that: it includes a frame, a vertically sliding upper mold, a movable lower mold, and a conveying mechanism for driving the lower mold to move, and also includes a fabric positioning and fixing device; the fabric positioning and fixing device includes a limiting component, an adsorption component, and a pull-down component; the limiting component is disposed below the lower mold, the limiting component includes a support plate and a plurality of limiting rods fixedly connected to the support plate, and a pulling mechanism is provided between the support plate and the lower mold to pull the lower mold towards the support. The spring near the support plate; the frame is provided with a limiting block that is detachably connected to the support plate in the initial state; the adsorption component is installed inside the lower mold; the adsorption component includes a vacuum pump, an air pipe and multiple adsorption holes; the air pipe is laid inside the lower mold; the multiple adsorption holes are evenly distributed on the surface of the lower mold and communicate with the air pipe; the air pipe is connected to the vacuum pump; the pull-down component includes a drive rod connected to the upper mold and a response rod connected to the support plate; a speed-changing part is provided between the drive rod and the response rod; the sliding speed of the response rod is greater than the sliding speed of the drive rod through the speed-changing part.

[0006] The present invention is further configured such that: the speed change unit includes a small gear and a large gear rotatably connected, the small gear meshing with the large gear, the drive rod and the response rod are both configured as racks, the large gear meshing with the drive rod, and the small gear meshing with the drive rod when the lower mold slides to below the upper mold.

[0007] The present invention is further configured such that the diameter of the small gear is half the diameter of the large gear.

[0008] The present invention is further configured such that the length of the plurality of limiting rods decreases from one end of the support plate edge to the other end.

[0009] The present invention is further configured such that: the limiting rod includes a straight segment and an inclined segment fixedly connected, the included angle between the straight segment and the inclined segment is an obtuse angle, and the total length of adjacent limiting rods is greater than the length of the straight segment in the higher limiting rod.

[0010] The present invention is further configured such that the elastic force generated by the spring restoring its deformation is greater than the weight of the support plate and several limiting rods.

[0011] The present invention is further configured such that: the conveying mechanism includes a slide rail, a slider and a drive motor; the upper mold is mounted on the slider; the slider is slidably disposed on the slide rail; and the drive motor is connected to the slider and can drive the slider to move along the slide rail.

[0012] In summary, this utility model has the following beneficial effects: through the synergistic action of the limiting component, the adsorption component, and the pull-down component, displacement of the fabric sheet during conveying can be effectively prevented. The length of the limiting rod in the limiting component is set to increase sequentially, which can gradually adjust the position of the fabric sheet and avoid applying excessive force to the fabric sheet to adjust it, thus preventing deformation. The adsorption component further fixes the fabric sheet through negative pressure adsorption, while the pull-down component provides the necessary space during hot pressing and reduces the influence of external structures on the hot pressing process of the fabric sheet, ensuring that the fabric sheet maintains an accurate position throughout the production process and improving product quality and pass rate. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a cross-sectional view of the present invention;

[0015] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0016] Figure 4 This is a schematic diagram of the transmission unit in this utility model.

[0017] In the diagram: 1. Frame; 2. Upper mold; 3. Lower mold; 4. Support plate; 5. Limiting rod; 6. Spring; 7. Adsorption hole; 8. Drive rod; 9. Response rod; 10. Pinion; 11. Large gear. Detailed Implementation

[0018] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0019] A hot-pressing composite device for the production of life jackets, such as Figures 1-4 As shown, the machine includes a frame 1, a vertically sliding upper mold 2, a movable lower mold 3, and a conveying mechanism for driving the lower mold 3 to move laterally. The conveying mechanism includes a slide rail, a slider, and a drive motor. The lower mold 3 is mounted on the slider, which is slidably mounted on the slide rail. The drive motor is connected to the slider and can drive the slider to move along the slide rail. The drive motor is a servo reciprocating motor, which achieves the conversion from rotation to sliding through a ball screw. This application is widely used in mechanical equipment and will not be elaborated further. The lower mold 3 is mounted on the slider. When the slider moves, it drives the lower mold 3 to slide below the upper mold 2. The frame 1 is equipped with a hydraulic device to drive the upper mold 2. If the upper mold 2 is used in a hot press, the frame 1 will also be equipped with a heating device to heat the upper mold 2 to ensure the stable operation of the hot press.

[0020] It also includes a fabric positioning and fixing device; the fabric positioning and fixing device includes a limiting component, an adsorption component, and a pull-down component; the limiting component adjusts the unevenly placed fabric to a neat and appropriate position, the adsorption component fixes the adjusted fabric by vacuum adsorption, reducing the movement of the fabric when the lower mold 3 moves, ensuring the accuracy of the position when the upper mold 2 is hot-pressed down, and the limiting component still surrounds the fabric during the movement, further reducing the displacement of the fabric during the displacement of the lower mold 3, while the pull-down component first pulls the limiting component away from the lower mold 3 when the upper mold 2 moves down, so that the upper mold 2 is unobstructed when it is pulled down and fits with the lower mold 3, so that the entire hot pressing process is stable.

[0021] A limiting component is located below the lower mold 3. The lower mold 3 has a sliding groove for the limiting rods 5 to pass through. The limiting component includes a support plate 4 and several limiting rods 5 fixedly connected to the support plate 4. A spring 6 is provided between the support plate 4 and the lower mold 3 to pull the lower mold 3 towards the support plate 4. The elastic force generated by the spring 6's recovery deformation is greater than the weight of the support plate 4 and the limiting rods 5. A limiting block is provided on the frame 1, detachably connected to the support plate 4 in the initial state. When placing the fabric sheet, the limiting block engages and fixes the support plate 4, the spring 6 is in a stretched state, and the cross-sectional shape of the limiting block is a right-angled trapezoid. The inclined surface of the limiting block faces the upper mold 2, and the lower mold... 3. The movement and engagement of the support plate 4 are smoother. When the support plate 4 slides to the position of the limit block and abuts against the top surface of the limit block, the spring 6 is in the maximum deformation state. The maximum height of the limit block is equal to the maximum height of the limit rod 5, ensuring that the highest point of the limit rod 5 is below the top surface of the lower mold 3 when the fabric is placed, which facilitates the placement of the fabric. After placement, the lower mold 3 moves the support plate 4 away from the limit block. The limit block is welded to the frame 1. Under the pull of the spring 6, the support plate 4 will gradually move upward. Vertical rods are set at the four corners of the lower mold 3. The support plate 4 slides along the vertical rods, which restricts the sliding direction of the support plate 4 and prevents it from shaking during the sliding process.

[0022] The limiting rod 5 includes a fixedly connected straight section and an inclined section. The angle between the straight section and the inclined section is an obtuse angle. The total length of adjacent limiting rods 5 is greater than the length of the straight section in the higher limiting rod 5. The support plate 4 is located below the lower mold 3. The support plate 4 slides upward under the action of the spring 6, thereby causing several limiting rods 5 on the support plate 4 to slide upward as well. When the inclined section of the limiting rod 5 slides upward, it generates a component force to push the fabric piece to move on the horizontal plane. Multiple adjustments to the entire fabric piece are made gradually to avoid excessive force causing deformation of the fabric piece and affecting the smooth progress of the adjustment process. Both the support plate 4 and the limiting rods 5 are made of stainless steel, which is lightweight and has a smooth surface, reducing the resistance to upward sliding and the friction when pushing the fabric piece. When the limiting rod 5 slides, it can push the fabric piece to move instead of bending under the influence of friction, ensuring the smooth operation of the entire process.

[0023] The adsorption component is installed inside the lower mold 3. The adsorption component includes a vacuum pump, an air pipe, and multiple adsorption holes 7. The air pipe is laid inside the lower mold 3, and the multiple adsorption holes 7 are evenly distributed on the surface of the lower mold 3 and connected to the air pipe. The air pipe is connected to the vacuum pump, which is installed and fixed on the lower mold 3. After the vacuum pump is started, the air pipe blows air around the adsorption holes 7 on the lower mold 3 to adsorb and fix the fabric to the lower mold 3. The adsorption holes 7 have a small cross-sectional area, so the adsorption will not cause the fabric to be concave or deformed. However, since the fabric itself is a flexible material, the vacuum pump is set to a low power mode to avoid excessive power affecting the flatness of the fabric.

[0024] The pull-down component includes a drive rod 8 connected to the upper mold 2 and a response rod 9 connected to the support plate 4. A speed-changing part is provided between the drive rod 8 and the response rod 9. The sliding speed of the response rod 9 is greater than that of the drive rod 8 through the speed-changing part. The speed-changing part includes a pinion 10 and a gear 11 rotatably connected. The pinion 10 and the gear 11 mesh. Both the drive rod 8 and the response rod 9 are racks. The gear 11 meshes with the drive rod 8. When the lower mold 3 slides below the upper mold 2, the pinion 10 meshes with the drive rod 8. The diameter of the pinion 10 is half the diameter of the gear 11. When the upper mold 2 moves down 10 cm, the support plate 4 slides down 20 cm to ensure that the support plate 4 slides below the lower mold 3 when the upper mold 2 is pressed down to fit against the surface of the lower mold 3.

[0025] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A hot-pressing composite device for producing life jackets, comprising a frame, a vertically sliding upper mold, a movable lower mold, and a conveying mechanism for driving the lower mold to move, characterized in that: It also includes a fabric positioning and fixing device; the fabric positioning and fixing device includes a limiting component, an adsorption component, and a pull-down component; the limiting component is located below the lower mold, and includes a support plate and several limiting rods fixedly connected to the support plate. A spring is provided between the support plate and the lower mold to pull the lower mold closer to the support plate. A limiting block is provided on the frame that is detachably connected to the support plate in the initial state. The adsorption component is installed inside the lower mold, and includes a vacuum pump, an air pipe, and multiple adsorption holes. The air pipe is laid inside the lower mold, and the multiple adsorption holes are evenly distributed on the surface of the lower mold and communicate with the air pipe. The air pipe is connected to the vacuum pump. The pull-down component includes a drive rod connected to the upper mold and a response rod connected to the support plate. A speed-changing part is provided between the drive rod and the response rod, and the sliding speed of the response rod is greater than the sliding speed of the drive rod through the speed-changing part.

2. The hot-pressing composite device for producing life jackets according to claim 1, characterized in that: The speed-changing unit includes a pinion and a large gear rotatably connected together. The pinion meshes with the large gear. Both the drive rod and the response rod are configured as racks. The large gear meshes with the drive rod. When the lower mold slides to below the upper mold, the pinion meshes with the drive rod.

3. The hot pressing composite device for producing life jackets according to claim 2, characterized in that: The diameter of the pinion is half the diameter of the gear.

4. The hot pressing composite device for producing life jackets according to claim 1, characterized in that: The length of several of the limiting rods decreases from one end of the support plate edge to the other.

5. The hot pressing composite device for producing life jackets according to claim 4, characterized in that: The limiting rod includes a straight segment and an inclined segment that are fixedly connected. The angle between the straight segment and the inclined segment is an obtuse angle. The total length of adjacent limiting rods is greater than the length of the straight segment in the higher limiting rod.

6. The hot pressing composite device for producing life jackets according to claim 1, characterized in that: The elastic force generated by the spring's recovery deformation is greater than the weight of the support plate and several limiting rods.

7. The hot pressing composite device for producing life jackets according to claim 1, characterized in that: The conveying mechanism includes a slide rail, a slider, and a drive motor. The upper mold is mounted on the slider, which is slidably disposed on the slide rail. The drive motor is connected to the slider and can drive the slider to move along the slide rail.

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