Expansion device for EVA (Ethylene Vinyl Acetate) foam plate
By designing an auxiliary movement and ejection mechanism for the EVA foam board expansion device, the problems of low efficiency and high safety hazards of traditional manual operation were solved, realizing automated production and ensuring equipment stability and board quality.
Patent Information
- Application Number
- CN202520216086.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-11
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2035-02-11
AI Technical Summary
In traditional EVA foam board production, the movement and separation of the heating plate rely on manual operation, which results in low efficiency, safety hazards and equipment stability issues. Furthermore, the collision of the heating plate generates noise, affecting the quality of the board.
An EVA foam sheet expansion device was designed, which includes an auxiliary moving mechanism and an ejection mechanism. It utilizes a hydraulic jack and a servo motor to drive the automatic movement of the heating plate and the ejection of the foam sheet, thus avoiding collisions with the heating plate and burns from high temperatures.
It enables automated movement of the heating plate and safe ejection of foam sheets, improving production efficiency, reducing noise and safety hazards, and ensuring equipment stability and sheet quality.
Smart Images
Figure CN223904389U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to foaming machine technical field, specifically a kind of EVA bubble cotton board expansion device. BACKGROUND
[0002] EVA bubble cotton board, i.e. ethylene-vinyl acetate copolymer foaming material, is widely used in packaging, cushioning, thermal insulation and sports equipment fields due to its lightweight, softness, chemical resistance, wear resistance and thermal insulation properties. In the production process of EVA bubble cotton board, specific equipment is needed to heat, foam and form the raw materials.
[0003] However, the traditional heating plate moving and bubble cotton board pushing out process often relies on manual operation, which not only is inefficient, but also has safety hazards, such as the possibility of staff being scalded by high temperature. In addition, the heating plates may collide during separation, producing noise and affecting the stability of the equipment and the quality of the board. Therefore, an EVA bubble cotton board expansion device is needed to address the existing shortcomings. SUMMARY
[0004] The utility model aims at making up for the shortcomings of prior art, providing an EVA bubble cotton board expansion device. The auxiliary moving mechanism avoids collision between heating plates when they are separated, and helps reduce noise generated during rapid sliding. The pushing out mechanism facilitates the removal of bubble cotton sheet and prevents staff from being scalded by high temperature.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme. An EVA bubble cotton board expansion device includes a base, a vertical column fixedly connected to the top corner of the base, a top cover fixedly connected to the top end of the vertical column, a pair of symmetrical support frames fixedly connected to the opposite sides of the top cover and the base, a plurality of heating plates slidingly connected to the opposite sides of the top cover and the base through the vertical column, a hydraulic jack movably connected to the top end of the base and abutting against the bottom end of the lowest heating plate, an auxiliary moving mechanism provided on the outside of each support frame and fixedly connected to the side edge of each heating plate, and a pushing out mechanism fixedly connected to the rear side of the base and the rear side of the top cover and movably connected to the bubble cotton board.
[0006] The utility model further provides that the auxiliary moving mechanism includes an extension frame, a synchronous rod and a connecting rod. The synchronous rod is fixedly connected to the outside of the rotary shaft on both sides of the extension frame. The connecting rod is movably connected to the outside of the synchronous rod. The end of the connecting rod away from the synchronous rod is fixedly connected to the side edge of the heating plate.
[0007] The utility model further sets up, the inside of support frame is equipped with a group of symmetrical sliding slot, the outside of connecting rod all is fixedly connected with sliding block, sliding block is connected in the inside of sliding slot.
[0008] The utility model further sets up, the both sides of base and the both sides of top cap all are fixedly connected with support block, the opposite side of support block is fixedly connected with guide rod, the outside of telescopic support's middle pivot all is fixedly connected with guide block, guide rod runs through guide block, and guide rod is connected with guide block movably.
[0009] The utility model further sets up, the most top pivot of telescopic support is fixedly connected in the outside of support frame.
[0010] The utility model further sets up, the push out mechanism includes fixed block, drive rod, push rod and gear, the fixed block is vertically symmetrical and sets up, two fixed blocks are fixedly connected in the outside of base and the outside of top cap respectively, the outside of drive rod all is fixedly connected with a plurality of push rod, the number of single column push rod is consistent with the number of heating plate, the bottom of drive rod all is fixedly connected with gear, and gear is engaged.
[0011] The utility model further sets up, push rod is movably connected in the opposite side of fixed block through bearing, the outside of top cap is fixedly connected with servo motor, and the output of servo motor is fixedly connected with the top of drive rod.
[0012] Compared with the prior art, the EVA foam board expansion device has the following beneficial effects:
[0013] 1, the utility model discloses a supplementary mobile mechanism is set up, under the gravity of heating plate itself, along the column and moves down, telescopic support elongates, and the synchronous link and connecting rod auxiliary heating plate drop, through the telescopic change of telescopic support, the equal interval change of auxiliary heating plate between heating plate can be completed, and the separation of heating plate, avoids the collision between heating plate when separating heating plate, and simultaneously be favorable to reduce the noise produced when fast sliding.
[0014] 2, the utility model discloses a push out mechanism is set up, and servo motor is started, and drive rod is rotated, and push rod is rotated to heating plate between, under the action of gear, another drive rod reverse rotation, make another push rod rotate to heating plate between, push the foam sheet above heating plate through a pair of push rod, and the foam sheet is convenient to take out, avoids high temperature and causes the scald of staff. DRAWINGS
[0015] Figure 1 It is the three-dimensional structure schematic diagram of the utility model;
[0016] Figure 2The utility model discloses a structure schematic view of the part between base and top cover.
[0017] Figure 3 The utility model discloses a structure schematic view of the auxiliary moving mechanism.
[0018] Figure 4 The utility model discloses Figure 3 Another structure schematic view of perspective.
[0019] Figure 5 The utility model discloses a structure schematic view of the pushing mechanism.
[0020] In the drawing: 1, base, 2, stand, 3, top cover, 4, support frame, 5, heating plate, 6, hydraulic jack, 7, auxiliary moving mechanism, 701, telescopic frame, 702, synchronous rod, 703, connecting rod, 8, pushing mechanism, 801, fixed block, 802, drive rod, 803, push rod, 804, gear, 9, sliding groove, 10, support block, 11, guide rod, 12, guide block, 13, servo motor, 14, sliding block. Specific implementation
[0021] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor fall within the protection scope of the utility model.
[0022] As Figures 1-5 The utility model provides a kind of technical scheme: a kind of EVA foam board expansion device, including base 1, the top corner of base 1 is all fixedly connected with stand 2, and the top of stand 2 is fixedly connected with top cover 3, and the opposite side of top cover 3 and base 1 is fixedly connected with a group of symmetrical support frame 4, and the opposite side of top cover 3 and base 1 is slidably connected with several heating plates 5 by stand 2, the top of base 1 is movably connected with hydraulic jack 6, and the bottom end of lowest heating plate 5 is in contact with hydraulic jack 6, the outside of support frame 4 is all provided with auxiliary moving mechanism 7, and auxiliary moving mechanism 7 is fixedly connected with the side of heating plate 5 respectively, the rear side of base 1 and the rear side of top cover 3 are fixedly connected with pushing mechanism 8, and pushing mechanism 8 is movably connected with foam board.
[0023] As Figure 1 、 Figure 2 And Figure 4As shown, the auxiliary moving mechanism 7 comprises a telescopic frame 701, a synchronous rod 702 and a connecting rod 703, the two sides of the telescopic frame 701 are fixedly connected with the synchronous rods 702, the outer sides of the synchronous rods 702 are movably connected with the connecting rods 703, the ends of the connecting rods 703 away from the synchronous rods 702 are fixedly connected with the side edges of the heating plates 5, the inner side of the supporting frame 4 is provided with a group of symmetrical sliding grooves 9, the outer sides of the connecting rods 703 are fixedly connected with sliding blocks 14, the sliding blocks 14 are slidably connected to the inner sides of the sliding grooves 9, the two sides of the base 1 and the two sides of the top cover 3 are fixedly connected with supporting blocks 10, the opposite sides of the supporting blocks 10 are fixedly connected with guide rods 11, the middle shafts of the telescopic frame 701 are fixedly connected with guide blocks 12, the guide rods 11 penetrate through the guide blocks 12 and are movably connected with the guide blocks 12, and the topmost shaft of the telescopic frame 701 is fixedly connected to the outer side of the supporting frame 4.
[0024] The bottommost heating plate 5 is lifted up by the hydraulic jack 6, and the heating plate 5 moves upward along the stand 2, because the connecting rods 703 are installed on the side edges of the heating plate 5, the connecting rods 703 are movably connected with the synchronous rods 702, and the synchronous rods 702 are movably connected with the side shafts of the telescopic frame 701, so that the telescopic frame 701 is contracted upward, the synchronous rods 702 are driven to move upward, and the auxiliary connecting rods 703 are driven to move upward, in this process, the connecting rods 703 are movably connected with the synchronous rods 702, the sliding blocks 14 are slidably connected along the sliding grooves 9, and the guide blocks 12 slide along the guide rods 11, until all the heating plates 5 are adhered to each other, when the foam sheet is formed, the hydraulic jack 6 moves downward, and under the action of the gravity of the heating plate 5, the heating plate 5 moves downward along the stand 2, the telescopic frame 701 is elongated downward, the heating plate 5 is lowered by the auxiliary synchronous rods 702 and connecting rods 703, and the distance between the heating plates 5 can be changed by the telescopic change of the telescopic frame 701, so that the adhesion and separation between the heating plates 5 are completed, the collision between the heating plates 5 when the heating plates 5 are separated is avoided, and the noise generated when the heating plates 5 are rapidly slid is reduced.
[0025] As shown in Figure 1 and Figure 5 The pushing mechanism 8 comprises a fixed block 801, a driving rod 802, a push rod 803 and a gear 804, the fixed block 801 is longitudinally symmetrical, the two fixed blocks 801 are fixedly connected to the outer sides of the base 1 and the top cover 3 respectively, the outer sides of the driving rods 802 are fixedly connected with a plurality of push rods 803, the number of the single-row push rods 803 is consistent with the number of the heating plates 5, the bottom ends of the driving rods 802 are fixedly connected with the gears 804, and the gears 804 are meshed, the push rods 803 are movably connected to the opposite sides of the fixed block 801 through bearings, the outer side of the top cover 3 is fixedly connected with a servo motor 13, and the output end of the servo motor 13 is fixedly connected with the top end of the driving rod 802.
[0026] The servo motor 13 is started, the driving rod 802 is driven to rotate, the push rod 803 is rotated to the heating plate 5, under the action of the gear 804, the other driving rod 802 is reversely rotated, the other push rod 803 is rotated to the heating plate 5, the foam sheet above the heating plate 5 is pushed out through the pair of push rods 803, the foam sheet is conveniently taken out, and the staff is prevented from being scalded by high temperature.
[0027] Working principle: in use, first, the inside of the heating plate 5 is filled with raw materials, then the bottom heating plate 5 is lifted up by the hydraulic jack 6, the heating plate 5 moves upwards along the stand 2, the connecting rod 703 is movably connected with the synchronous rod 702, the synchronous rod 702 is movably connected with the side shaft of the telescopic frame 701, the telescopic frame 701 is contracted upwards, the synchronous rod 702 is driven to move upwards, the connecting rod 703 is movably connected with the synchronous rod 702, the sliding block 14 slides along the sliding groove 9, the guide block 12 slides along the guide rod 11, until all the heating plates 5 are attached to each other, when the foam sheet is formed, the hydraulic jack 6 moves downwards, under the action of the gravity of the heating plate 5, the heating plate 5 moves downwards along the stand 2, the telescopic frame 701 is elongated downwards, the synchronous rod 702 and the connecting rod 703 assist the heating plate 5 to descend; then, the servo motor 13 is started, the driving rod 802 is driven to rotate, the push rod 803 is rotated to the heating plate 5, under the action of the gear 804, the other driving rod 802 is reversely rotated, the other push rod 803 is rotated to the heating plate 5, the foam sheet above the heating plate 5 is pushed out through the pair of push rods 803.
[0028] In the description of the present specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are contained in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
Claims
1. An EVA foam board expansion device comprising a base (1), characterized in that: The top corner of the base (1) is fixedly connected with a column (2), and the top end of the column (2) is fixedly connected with a top cover (3), the opposite sides of the top cover (3) and the base (1) are fixedly connected with a group of symmetrical support frames (4), and the opposite sides of the top cover (3) and the base (1) are slidably connected with a plurality of heating plates (5) through the column (2), the top end of the base (1) is movably connected with a hydraulic jack (6), and the bottom end of the lowest heating plate (5) abuts against the hydraulic jack (6), the outer side of the support frame (4) is provided with an auxiliary moving mechanism (7), and the auxiliary moving mechanism (7) is fixedly connected with the side edge of the heating plate (5), respectively, the rear side of the base (1) and the rear side of the top cover (3) are fixedly connected with a pushing mechanism (8), and the pushing mechanism (8) is movably connected with the foam board.
2. The EVA foam board expansion device according to claim 1, characterized in that: The auxiliary moving mechanism (7) comprises telescopic supports (701), synchronous rods (702) and connecting rods (703), the outer sides of the two sides of the telescopic support (701) are fixedly connected with synchronous rods (702), the outer sides of the synchronous rods (702) are movably connected with connecting rods (703), and the end, away from the synchronous rod (702), of the connecting rod (703) is fixedly connected with the side edge of the heating plate (5).
3. The EVA foam board expansion device according to claim 2, characterized in that: The inner side of the support frame (4) is provided with a group of symmetrical sliding grooves (9), the outer sides of the connecting rods (703) are fixedly connected with sliding blocks (14), and the sliding blocks (14) are slidably connected to the inner side of the sliding groove (9).
4. The EVA foam board expansion device according to claim 2, characterized in that: The two sides of the base (1) and the two sides of the top cover (3) are fixedly connected with support blocks (10), the opposite sides of the support block (10) are fixedly connected with guide rods (11), the outer sides of the middle shafts of the telescopic supports (701) are fixedly connected with guide blocks (12), the guide rods (11) penetrate through the guide blocks (12), and the guide rods (11) are movably connected with the guide blocks (12).
5. The EVA foam board expansion device of claim 2, wherein: The topmost shaft of the telescopic support (701) is fixedly connected to the outer side of the support frame (4).
6. The EVA foam board expansion device of claim 1, wherein: The pushing mechanism (8) comprises fixed blocks (801), drive rods (802), push rods (803) and gears (804), the fixed blocks (801) are longitudinally symmetrically arranged, two fixed blocks (801) are fixedly connected to the outer sides of the base (1) and the top cover (3), respectively, the outer sides of the drive rods (802) are fixedly connected with a plurality of push rods (803), the number of the push rods (803) is consistent with the number of the heating plates (5), the bottom ends of the drive rods (802) are fixedly connected with gears (804), and the gears (804) are meshed.
7. The EVA foam board expansion device according to claim 6, wherein: The push rod (803) is movably connected to the opposite side of the fixed block (801) through a bearing, the outer side of the top cover (3) is fixedly connected with a servo motor (13), and the output end of the servo motor (13) is fixedly connected with the top end of the drive rod (802).