A flat press with foldable protection function

Abstract

The utility model relates to the field of flat press, disclose a kind of flat press with foldable protection function, including rack, the front side of rack is hinged rotationally connected with side plate, the left side of side plate is fixedly connected with multiple telescopic rods, the left end of multiple telescopic rods is fixedly connected with cover, the inside of side plate is provided with telescopic component, the bottom side of rack inside is fixedly connected with bottom plate, the inside of rack is slidably connected with pressing plate, the left side of the inside of rack is rotatably connected with first threaded rod, the left side of pressing plate is threadedly connected on the outer wall of first threaded rod, the top of first threaded rod is fixedly connected with hand wheel, the left side of the inside of rack is provided with locking assembly.In the utility model, guardrail and other protection structures can be folded to reduce the occupied space, and the flat press can only be used for subsequent flattening work after the guardrail is rotated onto the rack, improving the safety of the flat press.

Description

Technical Field

[0001] This utility model relates to the field of flat presses, and in particular to a flat press with a foldable protective function. Background Technology

[0002] A flatbed press is a type of mechanical equipment that applies pressure through planar contact to process workpieces. Its core function is to utilize the vertical pressure of a printing plate or pressing plate to perform operations such as image transfer, material pressing, or shaping. It is widely used in printing, leather goods, and engineered wood products industries. For example, in printing, it transfers images to rigid materials such as metal and plastic; in leather workshops, it flattens leather pieces; and in engineered wood product manufacturing, it presses together sheets. During operation, it is manually or mechanically driven to ensure precise contact between the moving and fixed pressing plates, guaranteeing uniform pressure and meeting the flatness and fit requirements of different workpieces. Some models also feature protective designs, balancing processing effectiveness with operational safety.

[0003] However, current flatbed presses have the following drawbacks: First, the protective structure occupies a large space: Lacking a folding design, the protective components easily occupy limited workshop space when idle, affecting the use of processing tables or passageways, and have poor adaptability to compact environments. Second, safety linkage is lacking: Without guardrails and mandatory locking for the flattening action, the flattening process may be accidentally started if protection is not in place, posing a safety hazard of injury from arms reaching between the pressure plates.

[0004] Therefore, in view of the problems of large space occupation and lack of safety linkage in existing protective structures, there is a need for a flat press with foldable protective function to solve the above problems. Utility Model Content

[0005] To address the issues of large space occupation of protective structures and lack of safety linkage in existing technologies, this application provides a flat press with foldable protective functions.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A flatbed press with foldable protective function includes a frame. A side plate is rotatably connected to the front side of the frame via a hinge. Multiple telescopic rods are fixedly connected to the left side of the side plate. A cover plate is fixedly connected to the left end of the multiple telescopic rods. A telescopic assembly is provided inside the side plate to retract the side plate to the left side of the cover plate. A bottom plate is fixedly connected to the bottom side inside the frame. A pressure plate is slidably connected inside the frame. A first threaded rod is rotatably connected to the left side inside the frame. The left side of the pressure plate is threaded to the outer wall of the first threaded rod. A handwheel is fixedly connected to the top end of the first threaded rod. A locking assembly is provided on the left side inside the frame to lock the handwheel.

[0008] As a further improvement of this utility model, the telescopic component includes sliding rods slidably connected to the upper and lower sides inside the side plate, with a groove provided on the outer wall of the top sliding rod, and the left end of the sliding rod fixedly connected to the right side of the cover plate.

[0009] As a further improvement of this utility model, a second threaded rod is rotatably connected to the top side inside the side plate, and the top side slide rod is threadedly connected to the outer wall of the second threaded rod. A rotating rod is rotatably connected to the top side inside the side plate.

[0010] As a further improvement of this utility model, bevel gears are fixedly connected to the right end of the second threaded rod and the bottom end of the rotating rod, and the two bevel gears mesh with each other. A knob is rotatably connected to the top side of the side plate through a damping shaft, and the top end of the second threaded rod is fixedly connected to the inside of the knob.

[0011] As a further improvement of this utility model, the locking assembly includes a rotating plate rotatably connected to the top side inside the frame, a positioning block fixedly connected to the top side of the rotating plate, and a plurality of positioning grooves opened on the bottom side of the handwheel, with the positioning block engaging inside the positioning groove.

[0012] As a further improvement of this utility model, the frame and the rotating plate are connected by a torsion spring, and a push rod is slidably connected to the top side inside the frame, with the right end of the push rod abutting against the front side of the bottom side of the rotating plate.

[0013] As a further improvement of this utility model, a push block is fixedly connected to the rear side of the cover plate, and a circular groove is opened on the top side of the front side of the frame. The push block is engaged inside the snap-fit ​​groove, and the rear end of the push block abuts against the left end of the push rod.

[0014] As a further improvement of this utility model, the cover plate and the frame are magnetically connected, and the elastic coefficient of the torsion spring is much lower than the magnetic attraction force to prevent the cover plate from being bounced open by the torsion spring. The weight of the push rod is lower than the elastic coefficient of the torsion spring to ensure that the push rod will be pushed open by the torsion spring without external force.

[0015] In summary, compared with the prior art, this application includes at least one of the following beneficial technical effects:

[0016] 1. In this utility model, by rotating the knob, the rotating rod is rotated, which drives the second threaded rod to rotate through the meshing bevel gears. The second threaded rod drives the sliding rod on the top side to slide, thereby moving the cover plate and causing the cover plate to unfold or retract, so that the guardrail can be folded to reduce the space occupied.

[0017] 2. In this utility model, by rotating the cover plate to the front of the frame, the push block is engaged in the latching groove, which pushes the push rod to move backward, causing the push rod to push the rotating plate to rotate, thereby causing the positioning block to disengage from the positioning groove, thus releasing the lock on the handwheel. This ensures that the subsequent flattening work can only be carried out after the guardrail is rotated onto the frame, improving the safety of the flattening press. Attached Figure Description

[0018] Figure 1 An isometric view of a flat press with foldable protective function proposed in this utility model;

[0019] Figure 2 This is a schematic diagram of the side panel of a flat press with foldable protective function proposed in this utility model, in the open state.

[0020] Figure 3 This is a schematic diagram of the internal structure of the frame of a flat press with foldable protective function proposed in this utility model;

[0021] Figure 4 This is a schematic diagram of the handwheel structure of a flat press with foldable protective function proposed in this utility model;

[0022] Figure 5 This is a schematic diagram of the rotating plate of a flat press with foldable protective function proposed in this utility model being pushed.

[0023] Figure 6 This is a schematic diagram of the threaded rod structure of a flat press with foldable protective function proposed in this utility model.

[0024] Legend:

[0025] 1. Frame; 2. Side plate; 3. Telescopic rod; 4. Cover plate; 5. Slide rod; 6. Handwheel; 7. Base plate; 8. Pressure plate; 9. First threaded rod; 10. Push rod; 11. Rotating plate; 12. Positioning block; 13. Positioning groove; 14. Push block; 15. Second threaded rod; 16. Rotating rod; 17. Bevel gear; 18. Knob. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this application, but not all embodiments.

[0027] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0028] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0029] In the description of this application, it should be noted that the use of terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" to indicate orientation or positional relationships is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationships commonly used when the product is in use. These terms are used solely for the convenience of describing this application and for simplifying the description, and do not 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 application. Furthermore, the use of terms such as "first" and "second" in the description of this application is only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0030] Furthermore, the use of terms such as "horizontal" and "vertical" in the description of this application does not imply that the component is required to be absolutely horizontal or suspended, but rather that it may be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but rather that it may be slightly tilted.

[0031] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection 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 application based on the specific circumstances.

[0032] Example 1:

[0033] like Figures 1-3As shown, a flat press with foldable protective function includes a frame 1. A side plate 2 is rotatably connected to the front of the frame 1 via a hinge. Multiple telescopic rods 3 are fixedly connected to the left side of the side plate 2, and a cover plate 4 is fixedly connected to the left end of the multiple telescopic rods 3. The side plate 2, telescopic rods 3, and cover plate 4 form a guardrail, thereby enclosing the frame 1 and preventing injury to the arm from being inserted during flattening operations. A telescopic component is provided inside the side plate 2 to retract the side plate 2 to the left side of the cover plate 4. A bottom plate 7 is fixedly connected to the bottom inside the frame 1, through which the material to be flattened is placed. A pressure plate 8 is slidably connected inside the frame 1. A first threaded rod 9 is rotatably connected to the left side inside the frame 1. The left side of the pressure plate 8 is threadedly connected to the outer wall of the first threaded rod 9. A handwheel 6 is fixedly connected to the top of the first threaded rod 9. By rotating the handwheel 6, the first threaded rod 9 is rotated, driving the pressure plate 8 to move up and down, thereby bringing the pressure plate 8 closer to the base plate 7, thus flattening the material on the base plate 7 or detaching it from the base plate 7. A locking assembly is provided on the left side inside the frame 1 for locking the handwheel 6, such as... Figure 6 As shown, sliding rods 5 are slidably connected to both the upper and lower sides inside the side plate 2. The outer wall of the top sliding rod 5 has a groove. The left end of the sliding rod 5 is fixedly connected to the right side of the cover plate 4. The top side inside the side plate 2 is rotatably connected to a second threaded rod 15. The top sliding rod 5 is threadedly connected to the outer wall of the second threaded rod 15. The top side inside the side plate 2 is rotatably connected to a rotating rod 16. The right end of the second threaded rod 15 and the bottom end of the rotating rod 16 are both fixedly connected to bevel gears 17. The two bevel gears 17 mesh with each other. The top side of the side plate 2 is rotatably connected to a knob 18 through a damping shaft. The top end of the second threaded rod 15 is fixedly connected to the inside of the knob 18. By rotating the knob 18, the rotating rod 16 is rotated, which drives the second threaded rod 15 to rotate through the meshing bevel gears 17. This causes the second threaded rod 15 to drive the top sliding rod 5 to slide, thereby moving the cover plate 4 and allowing the cover plate 4 to unfold or retract. This allows the guardrail to be folded, thus reducing the space occupied.

[0034] Example 2:

[0035] As one of the optimized structural designs for Example 1, such as Figures 3-5As shown, a rotating plate 11 is rotatably connected to the top side inside the frame 1, and a positioning block 12 is fixedly connected to the top side of the rotating plate 11. Multiple positioning slots 13 are opened on the bottom side of the handwheel 6. The positioning block 12 is engaged in the positioning slot 13. The frame 1 and the rotating plate 11 are connected by a torsion spring. The torsion spring causes the rotating plate 11 to rotate with the positioning block 12, so that the positioning block 12 is engaged in the positioning slot 13, thereby fixing the handwheel 6. This prevents the pressure plate 8 from moving downward when the guardrail is not closed. If the arm is under the pressure plate 8 at this time, it will be injured, thus improving the safety of the flat press. During use, even if the initial position of the positioning block 12 is not in the positioning groove 13, when the handwheel 6 is turned, the positioning groove 13 will rotate to the position opposite to the positioning block 12. At this time, under the action of the torsion spring, the rotating plate 11 will still rotate the positioning block 12 into the positioning groove 13, thereby locking the handwheel 6 and preventing the handwheel 6 from continuing to rotate. This achieves the effect of locking the handwheel 6 even if the initial position of the positioning block 12 is not in the positioning groove 13. A push rod 10 is slidably connected to the top side inside the frame 1. The right end of the push rod 10 abuts against the front side of the bottom side of the rotating plate 11. A push block 14 is fixedly connected to the rear side of the cover plate 4. A circular groove is opened on the top side of the front side of the frame 1. The push block 14 is engaged in the inside of the snap-fit ​​groove. The rear end of the push block 14 abuts against the left end of the push rod 10. By rotating the cover plate 4, it is rotated to the front side of the frame 1, so that the push block 14 is engaged in the snap-fit ​​groove, thereby pushing the push rod 10 to move backward, so that the push rod 10 pushes the rotating plate 11 to rotate, thereby causing the positioning block 12 to disengage from the positioning groove 13, thereby releasing the lock on the handwheel 6. This ensures that the subsequent flattening work can only be carried out after the guardrail is rotated onto the frame 1, thus improving the safety of the flattening press. The cover plate 4 and the frame 1 are magnetically connected. The elastic coefficient of the torsion spring is much lower than the magnetic attraction force to prevent the cover plate 4 from being pushed open by the torsion spring. The weight of the push rod 10 is lower than the elastic coefficient of the torsion spring to ensure that the push rod 10 will be pushed open by the torsion spring without external force.

[0036] Working principle: First, rotating knob 18 causes rotating rod 16 to rotate, which in turn drives second threaded rod 15 to rotate via meshing bevel gear 17. Second threaded rod 15 then drives sliding rod 5 on top to slide, thereby moving cover plate 4 and unfolding it so that the length of the guardrail is the same as that of frame 1, ensuring the guardrail can seal frame 1. Then, material is placed on bottom plate 7. Next, rotating side plate 2 causes cover plate 4 to rotate to the front of frame 1, causing push block 14 to engage in the latching groove. This push block 14 then pushes push rod 10 backward, causing push rod 10 to push rotating plate 11 to rotate. The positioning block 12 is disengaged from the positioning groove 13, thereby releasing the lock on the handwheel 6. Then, the handwheel 6 is rotated to rotate the first threaded rod 9, which drives the pressure plate 8 to move downward, thereby bringing the pressure plate 8 closer to the base plate 7 and flattening the material on the base plate 7. The descent speed can be controlled by rotating slowly to avoid damage to the material from impact. The pressure plate 8 is applied until it contacts the material and applies appropriate pressure. This can be judged by the force applied by the handwheel 6 – when there is obvious resistance, the pressure is moderate. After completion, the handwheel 6 is rotated in the opposite direction to move the pressure plate 8 upward and remove it from the material. Then, the guardrail is pulled to open the frame 1, and the material can be removed.

[0037] The following are the applicable scenarios for this design, along with the specific parameters, materials, and models of each structure within those scenarios:

[0038] I. Suitable application scenarios: Flattening operations in small handmade leather workshops

[0039] (a) Scene positioning

[0040] This workshop focuses on small-scale handcrafted leather goods production with 5-10 people, primarily handling small-area processing needs such as flattening genuine leather / PU leather pieces (e.g., wallets, notebook covers, belt blanks), bonding leather to lining fabric, and polishing leather edges. The workshops are typically compact (each piece of equipment occupies ≤1.5㎡), and the operators are mostly handcrafted workers (not professional equipment operators). The equipment must meet three core requirements: safety, ease of operation, and space adaptability, while also satisfying the leather processing requirements for uniform pressure and no surface damage.

[0041] (II) Core Requirements of the Scenarios

[0042] Safety precautions: Most workshop operators are craft enthusiasts with low safety awareness and operational proficiency. Protective structures are needed to forcibly lock the dangerous areas to prevent injuries from arms being inserted between the pressure plates.

[0043] Space adaptation: The workshops are mostly street-front shops or small studios in office buildings. The equipment needs to be foldable and can be stored away, so as not to occupy the processing table and passage space when not in use.

[0044] Process compatibility: The pressing of leather requires controllable pressure (500-3000N), no scratches on the surface of the pressing plate, and the pressing process can be observed to avoid leather wrinkles or damage.

[0045] Easy to operate: No professional training is required. A single person can complete the entire process of "unfolding the protection - feeding the material - pressing - taking out the material - folding and storing". The operation time is ≤5 minutes per operation.

[0046] II. Design of Size, Material, and Model of Each Structure in the Scene

[0047] (a) Basic support structure (frame 1, base plate 7)

[0048] 1. Rack 1

[0049] Size parameters: Overall dimensions (length × width × height) 800mm × 500mm × 1200mm, column spacing 600mm (fits up to the largest size of leather pieces 500mm × 400mm), front opening angle ≥ 90° (ensure sufficient material feeding space);

[0050] Material selection: Welded with Q235B square steel, the square steel specifications are 40mm×40mm×3mm (balancing rigidity and lightweight, the whole machine weighs ≤60kg, making it easy to move), and the surface is sprayed with epoxy resin anti-rust paint (the color is light gray, which can match the workshop decoration style).

[0051] Key components: The front hinge is made of 304 stainless steel heavy-duty hinge (model: HB-02, single-leaf thickness 3mm, load capacity ≥50kg) to ensure smooth rotation of side panel 2 and no rust during long-term use.

[0052] 2. Base plate 7 (workpiece placement platform)

[0053] Size parameters: 600mm×450mm (slightly larger than the pressure plate for easy workpiece positioning), thickness 15mm, and upper surface flatness error ≤0.1mm;

[0054] Material selection: HT200 gray cast iron (wear-resistant and easy to process), with a 3mm thick food-grade silicone pad (hardness 50 Shore A, to prevent leather scratches and improve pressure uniformity) attached to the upper surface.

[0055] Installation location: Fixed inside the bottom side of frame 1, 150mm away from the bottom of the frame (to facilitate the operator to place materials in a sitting or standing position and avoid bending over fatigue).

[0056] (II) Protective folding structure (side plate 2, telescopic rod 3, cover plate 4, sliding rod 5)

[0057] 1. Side panel 2

[0058] Size parameters: Single piece size 600mm×450mm×5mm (height consistent with the frame column, width covers the dangerous area in front of the pressure plate), one piece on each side, symmetrically distributed;

[0059] Material selection: The main body is made of 1.2mm thick 304 stainless steel plate (lightweight and rust-proof, easy to wipe leather scraps), and the internal support frame is made of 20mm×20mm×2mm square steel (to ensure that it will not deform when folded).

[0060] Folding fit: The upper and lower sides of the inside are opened with slide bar grooves (22mm wide and 10mm deep) to accommodate the sliding of slide bar 5. Graphite grease is applied to the grooves (to reduce slide bar wear and extend service life).

[0061] 2. Telescopic rod 3 (sliding rod 5)

[0062] Size parameters: The slide bar 5 is a two-section telescopic structure with a single section length of 400mm and a telescopic stroke of 300mm (after folding, the cover plate 4 can fit the side plate 2, with a total thickness of ≤80mm). The top slide bar has a groove (10mm wide and 5mm deep, adapted to the second threaded rod 15 for transmission).

[0063] Material selection: 20# precision cold-drawn steel (20mm diameter, surface roughness Ra≤0.8μm, to ensure smooth sliding), with chrome plating (0.02mm thickness, rust prevention and reduction of friction coefficient).

[0064] Model compatibility: Fits the slide bar groove of side plate 2 with a clearance of 0.1-0.2mm to avoid jamming or shaking.

[0065] 3. Cover plate 4 (protective baffle)

[0066] Size parameters: 600mm×450mm×3mm (same size as side panel 2, fully covers the front of the frame when unfolded), with 3 observation windows on the top (size 100mm×80mm, inlaid with transparent PC board for easy observation of the pressing status).

[0067] Material selection: The main body is made of 1.5mm thick 304 stainless steel plate, and the observation window PC plate is made of 2mm thick transparent endurance plate (impact resistance ≥60kJ / m², to prevent the workpiece from popping out and breaking the glass during the pressing process).

[0068] Key components: Rear fixed push block 14 (304 stainless steel, size 20mm×20mm×15mm), the front top side of the frame 1 has a buckle groove (size 22mm×22mm×16mm, to fit push block 14), and the cover plate 4 has a 5mm thick magnetic strip (model: D10×300mm, magnetic force ≥20N, to ensure that it does not loosen after the protection is locked) attached to the contact surface with the frame 1.

[0069] (III) Transmission pressing structure (pressure plate 8, first threaded rod 9, handwheel 6)

[0070] 1. Pressure plate 8 (movable pressing plate)

[0071] Size parameters: 580mm×430mm (20mm smaller than the base plate to avoid workpiece overflow during pressing), thickness 20mm, parallelism error of upper and lower surfaces ≤0.05mm;

[0072] Material selection: 6061-T6 aluminum alloy (lightweight, weight ≤8kg, reducing the load on the threaded rod), surface anodized (silver white color, wear-resistant and scratch-free);

[0073] Sliding fit: Nylon guide sleeves (model: M40×60, inner diameter 40mm, gap with frame column 0.1mm) are installed on both sides to ensure no deviation during lifting.

[0074] 2. First threaded rod 9 (transmission screw)

[0075] Size parameters: Length 1000mm (compatible with pressure plate lifting stroke 300mm, highest position distance from base plate 750mm, easy to pick up and put down workpieces), diameter 24mm, lead 8mm (drops 8mm per revolution, high pressure adjustment accuracy);

[0076] Material and Model: Trapezoidal lead screw (model: Tr24×8, material: 45# steel, surface hardening treatment: HRC45-50, thread accuracy: 7h) is selected, and the matching lead screw nut is made of copper alloy (ZCuSn10Pb1, which reduces the coefficient of friction and extends the service life).

[0077] Installation position: Vertically installed inside the left side of the frame 1, with the top end extending 100mm above the top of the frame (for easy installation of handwheel 6), and the bottom end connected to the pressure plate 8 via a ball joint (model: SQ20, material: 45# steel) (to prevent the threaded rod from shifting under stress).

[0078] 3. Handwheel 6 (manual drive)

[0079] Size parameters: 180mm in diameter, 50mm in handle length (suitable for palm size, single person rotation force ≤30N), 12 positioning grooves 13 on the bottom side (groove depth 5mm, groove width 10mm, evenly distributed around the circumference to ensure precise engagement of positioning blocks 12 when locked).

[0080] Material selection: The main body is made of ABS engineering plastic (lightweight and comfortable to hold), and the handle is wrapped with TPR soft rubber (hardness 70 Shore A, non-slip and avoids hand fatigue).

[0081] Installation method: It is fixed to the top of the first threaded rod 9 by key connection (keyway size 8mm×4mm), which is convenient for disassembly and subsequent maintenance.

[0082] (iv) Telescopic drive structure (second threaded rod 15, rotating rod 16, bevel gear 17, knob 18)

[0083] 1. Second threaded rod 15 (slide rod driven lead screw)

[0084] Size parameters: Length 350mm (fits a slide bar with a 300mm telescopic stroke), diameter 12mm, lead 4mm (the slide bar moves 4mm per revolution, and the telescopic speed is controllable);

[0085] Material and Model: A miniature trapezoidal lead screw (model: Tr12×4, material: 304 stainless steel, rust-proof and with high transmission accuracy) is selected, and the matching nut is fixed inside the top slide bar 5;

[0086] Installation position: Horizontally installed on the inner top side of side plate 2, with both ends fixed by deep groove ball bearings (model: 6002, inner diameter 15mm, outer diameter 32mm) to ensure smooth rotation.

[0087] 2. Rotating rod 16 and bevel gear 17

[0088] Rotating rod 16: 120mm in length, 10mm in diameter, made of 304 stainless steel, with both ends fixed to the inside of side plate 2 by bearings;

[0089] Bevel gear 17: Module 2, number of teeth 15, pressure angle 20°, material 20CrMnTi (carburized and quenched, hardness HRC58-62, to ensure no slippage in meshing transmission), used in pairs (fixed to the right end of the second threaded rod 15 and the bottom end of the rotating rod 16 respectively), transmission ratio 1:1;

[0090] Knob 18: 50mm in diameter, made of ABS plastic, with knurled surface (anti-slip), fixed to the top side of side plate 2 via a damping shaft (model: DS-08, damping torque 1.5N・m) to ensure that the position is locked after rotation, preventing accidental contact that could cause the guardrail to retract.

[0091] (v) Safety locking structure (rotating plate 11, positioning block 12, push rod 10, push block 14)

[0092] 1. Turning plate 11 and positioning block 12

[0093] Rotating plate 11: Dimensions 80mm×50mm×5mm, material Q235 steel, fixed to the top inside of frame 1 by a torsion spring (model: T3×12×30, elastic coefficient 0.8N・m / rad), rotation angle range 0-30°;

[0094] Positioning block 12: 10mm×10mm×8mm in size, made of 304 stainless steel, welded to the top side of the rotating plate 11, with rounded corners at the engaging end (R2mm, to avoid damaging the positioning groove 13 during engagement).

[0095] Torsion spring parameters: spring constant 0.8 N·m / rad (ensuring that the positioning block 12 can reliably engage with the positioning groove 13, and that the push rod 10 can easily disengage when pushed).

[0096] 2. Push rod 10 and push block 14

[0097] Push rod 10: 150mm in length, 12mm in diameter, made of 20# steel, chrome-plated (rust-proof), with the right end machined into a bevel (30° angle, to facilitate pushing the rotating plate 11);

[0098] Push block 14: Dimensions 20mm×20mm×15mm, made of 304 stainless steel, welded to the rear side of cover plate 4, with rounded corners at the engaging end (R3mm, to ensure smooth engagement into the frame latching slot);

[0099] Matching relationship: After the push block 14 is engaged in the buckle groove, the push rod 10 is pushed to move by a stroke of ≥15mm (ensuring that the rotation angle of the rotating plate 11 is ≥10° and the positioning block 12 is completely disengaged from the positioning groove 13).

[0100] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A flat press with foldable protective function, characterized in that, The machine includes a frame (1), a side plate (2) is rotatably connected to the front side of the frame (1) via a hinge, a plurality of telescopic rods (3) are fixedly connected to the left side of the side plate (2), a cover plate (4) is fixedly connected to the left end of the plurality of telescopic rods (3), a telescopic assembly is provided inside the side plate (2) for retracting the side plate (2) to the left side of the side plate (2) of the cover plate (4), a bottom plate (7) is fixedly connected to the bottom side inside the frame (1), a pressure plate (8) is slidably connected inside the frame (1), a first threaded rod (9) is rotatably connected to the left side inside the frame (1), the left side of the pressure plate (8) is threadedly connected to the outer wall of the first threaded rod (9), a handwheel (6) is fixedly connected to the top end of the first threaded rod (9), and a locking assembly is provided inside the left side of the frame (1) for locking the handwheel (6).

2. A flat press with foldable protective function according to claim 1, characterized in that: The telescopic assembly includes sliding rods (5) that are slidably connected to the upper and lower sides inside the side plate (2). The outer wall of the top sliding rod (5) is provided with a groove, and the left end of the sliding rod (5) is fixedly connected to the right side of the cover plate (4).

3. A flat press with foldable protective function according to claim 2, characterized in that: The top side inside the side plate (2) is rotatably connected to a second threaded rod (15), and the top side slide rod (5) is threadedly connected to the outer wall of the second threaded rod (15). The top side inside the side plate (2) is rotatably connected to a rotating rod (16).

4. A flat press with foldable protective function according to claim 3, characterized in that: The right end of the second threaded rod (15) and the bottom end of the rotating rod (16) are both fixedly connected to bevel gears (17), and the two bevel gears (17) mesh with each other. The top side of the side plate (2) is rotatably connected to a knob (18) through a damping shaft, and the top end of the second threaded rod (15) is fixedly connected to the inside of the knob (18).

5. A flat press with foldable protective function according to claim 1, characterized in that: The locking assembly includes a rotating plate (11) rotatably connected to the top side inside the frame (1), a positioning block (12) is fixedly connected to the top side of the rotating plate (11), and a plurality of positioning grooves (13) are opened on the bottom side of the handwheel (6), and the positioning block (12) is engaged inside the positioning groove (13).

6. A flat press with foldable protective function according to claim 5, characterized in that: The frame (1) and the rotating plate (11) are connected by a torsion spring. A push rod (10) is slidably connected to the top side inside the frame (1). The right end of the push rod (10) abuts against the front side of the bottom side of the rotating plate (11).

7. A flat press with foldable protective function according to claim 6, characterized in that: A push block (14) is fixedly connected to the rear side of the cover plate (4). A circular groove is provided on the top side of the front side of the frame (1). The push block (14) is engaged in the inside of the snap-fit ​​groove. The rear end of the push block (14) abuts against the left end of the push rod (10).

8. A flat press with foldable protective function according to claim 7, characterized in that: The cover plate (4) and the frame (1) are magnetically connected. The elastic coefficient of the torsion spring is much lower than the magnetic attraction force to prevent the cover plate (4) from being popped open by the torsion spring. The weight of the push rod (10) is lower than the elastic coefficient of the torsion spring to ensure that the push rod (10) will be pushed open by the torsion spring without external force.

Images