Conductive foam multi-mode wrapping jig

Abstract

The utility model relates to the field of conductive foam, concretely to a conductive foam multi -mode wrapping jig. Including base, mounting panel, bolt, forming section, discharge section, adjusting mechanism, pressure plate no.

Description

Technical Field

[0001] This utility model relates to the field of conductive foam, specifically a multi-mode wrapping fixture for conductive foam. Background Technology

[0002] As electronic devices evolve towards miniaturization, integration, and high frequency, higher demands are placed on the performance and production efficiency of conductive foam. Conductive foam is typically composed of flame-retardant sponge, conductive cloth, and hot melt adhesive film, and its wrapping process directly affects the product's shielding effectiveness, mechanical strength, and yield.

[0003] Traditional equipment lacks coordinated design between processes such as wrapping, hot melting, and cooling. Materials need to be transferred manually or processed in sections by multiple machines, resulting in long production cycles, large equipment footprint, and easy deformation and contamination during material transfer. Utility Model Content

[0004] The present invention aims to provide a conductive foam multi-mode wrapping fixture to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A conductive foam multi-mode wrapping fixture includes a base, a mounting plate detachably connected to the base, the mounting plate and the base being threaded together by bolts, a forming section connected to the mounting plate, a discharge section connected to the forming section, and an adjustment mechanism connected to the base. Two sets of adjustment mechanisms are provided, each set connected to a pressure plate and a pressure plate. The pressure plate has a receiving groove, a telescopic rod connected to its side wall, a connecting plate connected to the telescopic end of the telescopic rod, a heating rod connected to the connecting plate, and a heat-melting protrusion connected to the connecting plate. The base is connected to a lower plate, which has a material feeding groove. The heat-melting protrusion cooperates with the material feeding groove. The base is connected to a lower plate, which also has a material feeding groove. The pressure plate and the lower plate cooperate with each other. The pressure plate is connected to a cooling mechanism for rapidly cooling and shaping the conductive foam.

[0007] Preferably, the adjusting mechanism includes a hydraulic rod, the base is connected to a support frame, the hydraulic rod is connected to the support frame, the telescopic end of the hydraulic rod is connected to a pressure plate, the support frame is slidably connected to a slide rod, the slide rod is connected to the pressure plate, and the connection method between the adjusting mechanism and the pressure plate is the same as the connection method between the adjusting mechanism and the pressure plate.

[0008] Preferably, the cooling mechanism includes a connecting pipe, which is connected to the second pressure plate. The second pressure plate has a water-cooling groove, and a guide plate is connected to the side wall of the water-cooling groove.

[0009] Preferably, the forming section gradually narrows from the inlet to the outlet, the bottom of the forming section is arc-shaped, the discharge section has a "6" shaped structure, and the discharge section is adapted to the minimum diameter of the forming section.

[0010] Preferably, the telescopic rod is fitted with a spring, and the two ends of the spring are respectively connected to the pressure plate and the connecting plate.

[0011] The beneficial effects of this technical solution compared to existing technologies are as follows:

[0012] (1) This solution incorporates a telescopic rod, a heating rod, and a heat-melting protrusion. The heating rod rapidly heats up and transfers heat to the heat-melting protrusion via a connecting plate, causing it to partially melt the conductive foam. By incorporating a forming section, a discharge section, and two feeding troughs, the conductive foam can undergo continuous processing within the fixture, from forming and heat-melting to cooling and shaping. This avoids manual material transfer or segmented processing by multiple equipment, shortens the production cycle, effectively improves work efficiency, reduces equipment footprint, and prevents deformation and contamination during material transfer. Bolts facilitate quick replacement of forming and discharge sections of different specifications, adapting to various cross-sectional shapes of conductive foam (such as circular and irregular shapes), enhancing the fixture's versatility and production flexibility.

[0013] (2) By setting an adjustment mechanism, pressure plate one and pressure plate two are driven respectively. The downward stroke and pressure of the pressure plate can be precisely controlled by the hydraulic system to adapt to the processing requirements of conductive foam of different thicknesses and hardnesses. The sliding cooperation between the slide rod and the support frame provides guidance for the pressure plate, ensuring a smooth downward pressing process and avoiding foam processing accuracy errors caused by skewing.

[0014] (3) By setting up a cooling mechanism, cooling water flows into the water cooling tank through the connecting pipe. The guide plate guides the water flow to form turbulence, which enhances the heat exchange efficiency and can quickly cool the hot-melted foam to room temperature. The pressure plate two and the lower plate two cooperate to apply continuous pressure to the foam during the cooling process to prevent cooling shrinkage and deformation, and ensure the final dimensional accuracy.

[0015] (4) By setting the molding section to adopt the structure of "gradually shrinking from the inlet to the outlet and rounded bottom", the foam can be subjected to progressive extrusion to make it uniformly shaped; the "6" shaped structure of the discharge section is adapted to the minimum diameter of the molding section to ensure that the shaped foam is stably discharged and avoids deformation and rebound.

[0016] (5) By setting springs, elastic buffering is provided to ensure uniform pressure when the hot melt protrusions come into contact with the foam, and to avoid foam damage caused by hard squeezing. Attached Figure Description

[0017] Figure 1 This is a front sectional view of the present invention;

[0018] Figure 2 A top sectional view of the pressure plate 2 provided by this utility model;

[0019] Figure 3 A left-side cross-sectional view of the discharge section provided by this utility model;

[0020] Reference numerals: 1. Base; 2. Forming section; 3. Discharge section; 4. Lower plate 1; 5. Feed chute 1; 6. Connecting plate; 7. Heating rod; 8. Hot melt protrusion; 9. Lower plate 2; 10. Feed chute 2; 11. Pressure plate 2; 12. Connecting pipe; 13. Support frame; 14. Hydraulic rod; 15. Slide rod; 16. Pressure plate 1; 17. Storage groove; 18. Telescopic rod; 19. Spring; 20. Mounting plate; 21. Bolt; 22. Guide plate; 23. Water cooling tank. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments:

[0022] like Figure 1-3 The conductive foam multi-mode wrapping fixture shown includes a base 1, which is made of high-strength aluminum alloy or steel. A mounting plate 20 is detachably connected to the top of the base 1. The mounting plate 20 and the base 1 are connected by several bolts 21 via a common thread, facilitating quick replacement of different specifications of the forming section 2 and the discharge section 3 to accommodate conductive foam with different cross-sectional shapes. The top of the mounting plate 20 is connected to the forming section 2, which is connected to the discharge section 3. The forming section 2 and the discharge section 3 are integrated. An adjustment mechanism is connected to the top of the base 1. Two sets of adjustment mechanisms are provided, each connected to a pressure plate 16 and a pressure plate 11. The pressure plate 16 has several storage slots 17. Each storage slot 17 has a telescopic rod 18 connected to its side wall. The telescopic end of each telescopic rod 18 is connected to a connecting plate 6. The connecting plate 6 is connected to a heating rod 7, which has a temperature control module. The heating rod 7 is existing technology and will not be described in detail here. A heat-melting protrusion 8 is connected to the bottom of the connecting plate 6. A lower plate 4 is connected to the top of the base 1. A material feeding groove 5 is opened on the top of the lower plate 4. The heat-melting protrusion 8 and the material feeding groove 5 cooperate with each other. A second lower plate 9 is connected to the top of the base 1. A second material feeding groove 10 is opened on the top of the lower plate 9. The bottom of a second pressure plate 11 cooperates with the top of the second lower plate 9. The second pressure plate 11 is connected to a cooling mechanism used to quickly cool and shape the conductive foam. A hydraulic rod 14 drives the first pressure plate 16 to descend. The spring 19 is compressed, causing the heat-melting protrusion 8 to contact the foam surface. The heating rod 7 heats up to the set temperature, melting the foam surface layer to achieve multi-layer bonding or edge sealing. After being heated, the foam enters the feeding trough 10. The pressure plate 11 descends under the drive of another set of hydraulic rods 14, clamping the foam with the lower plate 9. Cooling water circulates in the water-cooling tank 23, rapidly cooling and shaping the foam. The pressure of the pressure plate 11 is higher than that of the pressure plate 16, ensuring dimensional stability of the foam during cooling.

[0023] like Figure 1As shown, the adjustment mechanism includes a hydraulic rod 14, a support frame 13 is connected to the top of the base 1, the hydraulic rod 14 is connected to the support frame 13, the telescopic end of the hydraulic rod 14 is connected to the pressure plate 16, the support frame 13 is symmetrically slidably connected with slide rods 15, the other ends of the two slide rods 15 are respectively connected to the pressure plate 16, and the connection method between the adjustment mechanism and the pressure plate 11 is the same as the connection method between the adjustment mechanism and the pressure plate 16.

[0024] like Figure 2 As shown, the cooling mechanism includes a connecting pipe 12, and there are two connecting pipes 12. The two connecting pipes 12 are respectively connected to both ends of the pressure plate 11. A water cooling tank 23 is opened inside the pressure plate 11, and several guide plates 22 are connected to the side wall of the water cooling tank 23.

[0025] like Figure 1 , 3 As shown, the forming section 2 gradually narrows from the inlet to the outlet, and its bottom is arc-shaped. It applies progressive extrusion to the original conductive foam, shaping it uniformly through friction and pressure, avoiding internal stress concentration or surface wrinkles caused by sudden shrinkage. The discharge section 3 has a "6"-shaped structure, and its diameter is matched to the minimum diameter of the forming section 2. Each telescopic rod 18 has a spring 19 fitted on its outer wall, with both ends of each spring 19 connected to the pressure plate 16 and the connecting plate 6, respectively. The combination of the springs 19 and the telescopic rods 18 enables the hot-melt protrusions 8 to "follow the shape and press down," adapting to slight undulations on the foam surface and avoiding crushing caused by hard contact.

[0026] The specific implementation process is as follows:

[0027] According to the target product specifications, by removing the bolts 21 between the base 1 and the mounting plate 20, the appropriate molding section 2 and discharge section 3 are replaced, ensuring that the diameter of the discharge section 3 matches the material feeding trough 5. Sheet-shaped conductive foam is fed into the molding section 2 inlet, and the foam moves towards the outlet under the action of an external traction device. As the foam passes through the tapered channel, it is subjected to frictional resistance and radial pressure from the inner wall, forcing it to undergo plastic deformation, gradually reducing the cross-section to the target size. The shaped foam is then discharged through the "6"-shaped discharge section 3 and enters the material feeding trough 5 at a stable speed. The pressure plate 16 descends vertically along the slide bar 15. When the hot-melt protrusion 8 contacts the foam surface, the spring 19 compresses to generate elastic force, causing the hot-melt protrusion 8 to "flexibly adhere" to the foam rather than rigidly compress it. Heat is conducted to the hot-melt protrusion 8 through the connecting plate 6, melting the foam and the outer materials such as conductive cloth and metal foil, achieving integrated molding.

[0028] After being heated, the foam enters the feeding trough 10. Another set of hydraulic rods 14 drives the pressure plate 11 to descend, forming a rigid clamp with the lower plate 9, ensuring that the foam maintains its shape during cooling. Cooling water flows from the connecting pipe 12 into the water-cooling tank 23 of the pressure plate 11, quickly absorbing the heat from the foam. The cooled conductive foam is then discharged from the end of the feeding trough 10 and can be directly wound up or cut into finished products.

[0029] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A conductive foam multi-mode wrapping fixture, characterized in that: Includes a base (1), the base (1) being detachably connected to an mounting plate (20), the mounting plate (20) and the base (1) being threaded together by bolts (21), the mounting plate (20) being connected to a forming section (2), the forming section (2) being connected to a discharge section (3), the base (1) being connected to an adjustment mechanism, the adjustment mechanism having two sets, the two sets of the adjustment mechanism being respectively connected to a pressure plate one (16) and a pressure plate two (11), the pressure plate one (16) having a storage groove (17), the side wall of the storage groove (17) being connected to a telescopic rod (18), the telescopic rod (18) extending... The constricted end is connected to a connecting plate (6), the connecting plate (6) is connected to a heating rod (7), the connecting plate (6) is connected to a hot melt protrusion (8), the base (1) is connected to a lower plate (4), the lower plate (4) has a material feeding groove (5), the hot melt protrusion (8) and the material feeding groove (5) cooperate with each other, the base (1) is connected to a lower plate (9), the lower plate (9) has a material feeding groove (10), the pressure plate (11) cooperates with the lower plate (9), the pressure plate (11) is connected to a cooling mechanism, the cooling mechanism is used to quickly cool and shape the conductive foam.

2. The conductive foam multi-mode wrapping fixture as described in claim 1, characterized in that: The adjustment mechanism includes a hydraulic rod (14), the base (1) is connected to a support frame (13), the hydraulic rod (14) is connected to the support frame (13), the telescopic end of the hydraulic rod (14) is connected to the first pressure plate (16), the support frame (13) is slidably connected to a slide rod (15), the slide rod (15) is connected to the first pressure plate (16), and the connection method of the adjustment mechanism and the second pressure plate (11) is the same as the connection method of the adjustment mechanism and the first pressure plate (16).

3. The conductive foam multi-mode wrapping fixture as described in claim 1, characterized in that: The cooling mechanism includes a connecting pipe (12), which is connected to a pressure plate (11). The pressure plate (11) has a water-cooling tank (23), and a guide plate (22) is connected to the side wall of the water-cooling tank (23).

4. The conductive foam multi-mode wrapping fixture as described in claim 1, characterized in that: The forming section (2) gradually narrows from the inlet to the outlet. The bottom of the forming section (2) is arc-shaped. The discharge section (3) has a "6" shaped structure. The discharge section (3) is adapted to the minimum diameter of the forming section (2).

5. The conductive foam multi-mode wrapping fixture as described in claim 1, characterized in that: The telescopic rod (18) is fitted with a spring (19), and the two ends of the spring (19) are connected to the pressure plate (16) and the connecting plate (6) respectively.

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