Punching-free IML diaphragm thermal forming die

Abstract

The utility model discloses a punching-free IML membrane thermal forming die which comprises a bottom plate fixed on a hot press table, a knife edge plate arranged on the bottom plate and a top plate movably arranged above the knife edge plate. An upper forming block is connected to the bottom of the top plate, a placing area for placing a diaphragm is formed on the knife edge plate, a forming groove is formed in the knife edge plate, a lower forming block is movably arranged in the forming groove, and an IR heating disc is movably arranged between the knife edge plate and the top plate; a certain heating space is formed between the upper forming block and the lower forming block before mold closing, the IR heating disc is at least provided with a first position and a second position, when the IR heating disc is located at the first position, the IR heating disc is placed in the heating space and located above the knife edge disc, and when the IR heating disc is located at the second position, the IR heating disc is placed in the heating space and located above the knife edge disc. And the IR heating disc is separated from the heating space.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to an IML diaphragm thermoforming mold free of punching. Background Art

[0002] Traditional IML molds can only use high-pressure forming molds to first perform 3D forming of the diaphragm shape, and then use punching molds to punch out the waste area of the 3D-formed diaphragm;

[0003] Existing traditional molds have the following problems: 1. Traditional molds consist of two pairs of molds: a high-pressure forming mold and a shape waste punching mold. The mold cost is relatively high and the mold development cycle is long. 2. Since traditional molds have two molds, the relative process route will add one step, which increases the transfer time and labor costs. 3. Traditional high-pressure forming molds require high-pressure air intake, and the high-pressure air intake speed is extremely slow, resulting in low efficiency. Utility Model Content

[0004] In order to solve the technical problems existing in the background technology, the utility model proposes an IML diaphragm thermoforming mold that does not require punching.

[0005] The technical solutions adopted by the present invention to solve the technical problems are as follows:

[0006] A punch-free IML film thermoforming die, characterized by comprising a bottom plate fixed on a hot press table, a knife edge plate arranged on the bottom plate, and a top plate movably arranged above the knife edge plate;

[0007] The bottom of the top plate is connected to an upper forming block, the knife-edge plate forms a placement area for placing the diaphragm, the knife-edge plate forms a forming groove, the lower forming block is movably arranged in the forming groove, and an IR heating plate is movably arranged between the knife-edge plate and the top plate;

[0008] A certain heating space is formed between the upper forming block and the lower forming block before the mold is closed, and the IR heating disk has at least a first position and a second position. When the IR heating disk is in the first position, the IR heating disk is placed in the heating space and is located above the knife edge disk. When the IR heating disk is in the second position, the IR heating disk is out of the heating space.

[0009] Preferably, the forming trough includes a forming area for extruding the membrane and a cutting area for cutting the membrane, and the lower forming block is disposed within the forming area. With the above improvements, during the forming process, the membrane is placed on the blade plate. As the top plate presses down, the upper and lower forming blocks squeeze the membrane, causing the portion within the forming area to be extruded and formed, while the membrane within the cutting area is cut away by the blade plate, thereby forming the membrane into the desired shape.

[0010] Preferably, the blade plate is provided with a plurality of spaced-apart positioning pins, which extend from the blade plate and are positioned within the positioning area. With this improvement, before molding, the diaphragm can be placed on the positioning area of the blade plate, and the positioning pins can be inserted into the positioning holes of the diaphragm, thereby securing the diaphragm to the blade plate. This prevents the diaphragm from shifting during the molding process, thereby ensuring molding quality.

[0011] Preferably, the lower forming block includes a jumping core block that is slidably set in the forming groove, and the bottom of the jumping core block is connected to a fixed plate, and the bottom of the fixed plate is provided with a first elastic element, one end of the first elastic element abuts the fixed plate, and the other end abuts the bottom plate. Through the above improvements, as the top plate descends, the upper forming block on the top plate will abut against the jumping core block, and the jumping core block descends under the action of the upper forming block. The fixed plate supports the jumping core block under the action of the first elastic element, so that the jumping core block has an upward force, so that the upper and lower end faces of the diaphragm are respectively subjected to the extrusion force of the first forming block and the jumping core block, thereby ensuring the thickness of the diaphragm extrusion and improving the effect of diaphragm extrusion molding.

[0012] Preferably, the lower forming block further comprises a first slotting block fixedly mounted on the bottom plate, the upper forming block comprises an extrusion block fixedly mounted below the top plate, and a second slotting block slidably mounted on the extrusion block, the extrusion block being formed with a sliding slot, the second slotting block being slidably mounted within the sliding slot, the first slotting block and the second slotting block being disposed opposite each other and having the same outer contour. Through the above improvements, during the forming process, the lower forming block and the upper forming block respectively extrude the diaphragm from the upper and lower ends. Since the first slotting block and the second slotting block are disposed opposite each other and have the same outer contour, when the first slotting block and the second slotting block begin to extrude, due to the sliding arrangement of the second forming block, the first slotting block will be partially inserted into the sliding slot and part of the diaphragm will be cut off, thereby forming a designated notch on the diaphragm.

[0013] Preferably, a sliding rod is inserted into the top plate, the sliding rod is connected to the second groove block, and a second elastic element is sleeved on the sliding rod, one end of the second elastic element abuts the top plate, and the other end abuts the second groove block. Through the above improvement, as the first groove block and the second groove block begin to squeeze, the second groove block retracts into the sliding groove under the action of the first groove block, and the second forming groove has a tendency to extend out of the sliding groove under the action of the second elastic element, so that the first groove block and the second groove block squeeze the diaphragm from both end surfaces respectively, ensuring the forming quality of the notch on the diaphragm.

[0014] Preferably, a hole-forming column is inserted into the bottom plate, the hole-forming column is inserted into the core jump block, and the extrusion block is formed with an insertion hole for the hole-forming column to be inserted. With the above improvement, when the top plate and the bottom plate are molded together, the hole-forming column will pass through the diaphragm and be inserted into the insertion hole, thereby forming the required hole on the formed diaphragm.

[0015] Preferably, the IR heating plate is horizontally arranged above the blade plate, and a plurality of spaced-apart air passages are formed on the IR heating plate. With the above improvement, air can circulate through the air passages, thereby improving the heating effect of the IR heating plate on the diaphragm and improving the forming quality of the diaphragm.

[0016] Preferably, the IR heating disk completely covers the knife edge plate along the projection direction. Through the above improvements, the heating area of the IR heating disk is increased, ensuring that the entire diaphragm is heated to ensure molding quality.

[0017] Preferably, a heating channel is formed in the bottom plate, and a water inlet pipe is connected to the heating channel. Through the above improvements, the bottom plate can be heated by water by utilizing the heating channel and the water inlet pipe inside the bottom plate, and cooperate with the hot press to heat the mold, thereby improving the overall heating effect. Since the mold will become hotter with the increase of production time, the heating channel can control the temperature of the template to improve stability.

[0018] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0019] By installing the entire mold on a hot press, the bottom of the entire mold is heated using the base plate and the hot press. When the mold temperature rises to a certain level, the mold is opened and the diaphragm is placed on the placement area of the knife plate. The IR heating plate is then placed in the heating space to heat the diaphragm using infrared rays. After heating and baking, the top plate is lowered to close the mold. The upper and lower forming blocks are squeezed against each other to extrude the diaphragm into a specified shape, and the excess part of the diaphragm is cut off under the action of the knife plate. Only one set of molds is needed to complete the IML diaphragm molding. Compared with traditional molds, not only the number of molds is reduced, but also the process flow is reduced. In addition, the hot pressing efficiency is three times that of high-pressure molding, which greatly improves efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of the overall structure of the utility model in a mold-opening state;

[0021] Figure 2 This is a schematic diagram of the structure of the top plate and the upper forming block of the utility model;

[0022] Figure 3 This is a cross-sectional view of the top plate and the upper forming block of the utility model;

[0023] Figure 4 This is a schematic structural diagram of the IR heating plate of the present invention;

[0024] Figure 5This is a schematic diagram of the structure of the bottom plate and the knife edge plate of the utility model;

[0025] Figure 6 It is a cross-sectional view of an embodiment of the lower forming block of the present utility model;

[0026] Figure 7 It is a cross-sectional view of a first embodiment of a slotting block of the present invention;

[0027] In the figure: 1. Bottom plate; 2. Blade plate; 3. Upper fixing plate; 4. Top plate; 5. Lower fixing plate; 6. Upper forming block; 7. Lower forming block; 8. IR heating plate; 9. Heating space; 11. Placement area; 12. Forming groove; 1.1. Forming area; 1.2. Cutting area; 1.3. Positioning pin; 2.1. Jumping core block; 2.2. Fixing plate; 2.3. First elastic element; 3.1. First grooving block; 3.2. Extrusion block; 3.3. Second grooving block; 3.4. Sliding groove; 3.5. Sliding rod; 3.6. Second elastic element; 4.1. Hole-forming column; 4.2. Insertion hole; 4.3. Air passage; 4.4. Heating channel; 4.5. Water inlet pipe; DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] It should be understood that although terms such as upper, middle, lower, top, end, etc. appear in this document to describe various elements, these elements are not limited by these terms. These terms are only used to distinguish elements from each other for ease of understanding, and are not used to define any direction or order limitation.

[0030] like Figure 1-7 As shown, a punch-free IML film thermoforming mold includes a bottom plate 1 fixed on a hot press table, a knife edge plate 2 set on the bottom plate 1, and a top plate 4 movably set above the knife edge plate 2.

[0031] Specifically, the bottom of the top plate 4 is connected to an upper forming block 6, a placement area 11 for placing the diaphragm is formed on the blade plate 2, a forming groove 12 is formed on the blade plate 2, a lower forming block 7 is movably arranged in the forming groove 12, and an IR heating plate 8 is movably arranged between the blade plate 2 and the top plate 4.

[0032] Furthermore, a certain heating space 9 is formed between the upper forming block 6 and the lower forming block 7 before the mold is closed, and the IR heating disk 8 has at least a first position and a second position. When the IR heating disk 8 is in the first position, the IR heating disk 8 is placed in the heating space 9 and is located above the knife edge disk, and when the IR heating disk 8 is in the second position, the IR heating disk 8 is separated from the heating space 9.

[0033] During the entire molding process, the bottom plate 1 and the hot press are used to heat the entire bottom of the mold. When the mold temperature rises to a certain level, the mold is opened and the diaphragm is placed on the placement area 11 of the blade plate 2. The IR heating plate 8 is then placed in the heating space 9 and the diaphragm is heated by infrared rays. After the heating and baking is completed, the IR heating plate 8 is removed from the heating space 9 and the top plate 4 is lowered to close the mold. The upper molding block 6 and the lower molding block 7 are squeezed against each other to squeeze the diaphragm into a specified shape, and the excess part of the diaphragm is cut off under the action of the blade plate 2. Therefore, only one set of molds is needed to complete the molding of the IML diaphragm. Compared with traditional molds, not only the number of molds is reduced, but also the process flow is reduced. In addition, the hot pressing efficiency is three times that of high-pressure molding, which greatly improves efficiency.

[0034] Preferably, an upper fixing plate 3 and a lower fixing plate 5 are respectively provided on the top plate 4 and the bottom plate 1 to fix the upper forming block 6 and the lower forming block 7 to ensure the stability of the installation.

[0035] like Figure 2 、 Figure 3 、 Figure 5 、 Figure 6 、 Figure 7 As shown, a further explanation of the implementation of the blade plate 2 in this embodiment is provided, wherein the forming groove 12 includes a forming area 1.1 for extruding the diaphragm and a cutting area 1.2 for cutting the diaphragm, and the lower forming block 7 is arranged in the forming area 1.1.

[0036] During the forming process, the diaphragm is placed on the blade plate 2. As the top plate 4 presses down, the upper forming block 6 and the lower forming block 7 squeeze the diaphragm. The lower forming block 7 descends under the action of the upper forming block 6, and as the upper forming block 6 descends, it makes a step difference with the blade plate 2, thereby cutting off the diaphragm. As a result, the part within the forming area 1.1 is squeezed and formed by the upper forming block 6 and the lower forming block 7, and the diaphragm in the cutting area 1.2 is cut under the action of the blade plate 2 and the upper forming block 6, so that the diaphragm becomes the required shape, and the cutting and forming steps are realized at the same time. Compared with traditional molds, the forming steps are reduced and the forming efficiency is greatly improved.

[0037] like Figure 5 、 Figure 7As shown, in some other embodiments, a plurality of spaced positioning pins 1.3 are inserted on the blade plate 2, the positioning pins 1.3 extend out of the blade plate 2 and are placed in the placement area 11, and positioning holes for the positioning pins 1.3 to be placed are formed on the diaphragm. The diaphragm can be placed on the placement area 11 of the blade plate 2, and the positioning pins 1.3 are placed in the positioning holes of the diaphragm, so that the diaphragm is fixed on the blade plate 2, avoiding the position displacement of the diaphragm during the molding process, so as to ensure the molding quality.

[0038] like Figure 2 、 Figure 3 、 Figure 5 、 Figure 6 、 Figure 7 As shown, a further explanation of the implementation methods of the upper forming block 6 and the lower forming block 7 in this embodiment is provided, wherein the lower forming block 7 includes a jumping core block 2.1 slidably arranged in the forming groove 12, and the bottom of the jumping core block 2.1 is connected to a fixed plate 2.2, and a first elastic element 2.3 is provided at the bottom of the fixed plate 2.2, and one end of the first elastic element 2.3 abuts the fixed plate 2.2, and the other end abuts the bottom plate 1.

[0039] As the top plate 4 descends, the upper forming block 6 on the top plate 4 will abut against the jump core block 2.1, and the jump core block 2.1 will descend under the action of the upper forming block 6. At the same time, the upper forming block 6 will be placed in the knife edge plate 2 and interlaced with the knife edge plate 2 to cut the diaphragm. In addition, the fixed plate 2.2 supports the jump core block 2.1 under the action of the first elastic element 2.3, so that the jump core block 2.1 has an upward force, so that the upper and lower end faces of the diaphragm are respectively subjected to the extrusion force of the first forming block and the jump core block 2.1, thereby ensuring the thickness of the diaphragm extrusion and improving the effect of the diaphragm extrusion molding.

[0040] Furthermore, the lower forming block 7 also includes a first grooving block 3.1 fixed on the bottom plate 1, the upper forming block 6 includes an extrusion block 3.2 fixed below the top plate 4, and a second grooving block 3.3 slidably arranged on the extrusion block 3.2, a sliding groove 3.4 is formed on the extrusion block 3.2, and the second grooving block 3.3 is slidably arranged in the sliding groove 3.4, the first grooving block 3.1 and the second grooving block 3.3 are arranged opposite to each other and have the same outer contour, and the extrusion block 3.2 and the core pulling block have the same outer contour.

[0041] During the forming process, the lower forming block 7 and the upper forming block 6 squeeze the diaphragm from the upper and lower ends respectively. Since the first trough block 3.1 and the second trough block 3.3 are arranged opposite to each other and have the same outer contour, when the first trough block 3.1 and the second trough block 3.3 start to extrude, due to the sliding setting of the second forming block, the first trough block 3.1 will be partially placed in the sliding groove 3.4 and cut off part of the diaphragm, so that a specified notch is formed on the diaphragm.

[0042] In addition, a sliding rod 3.5 is inserted on the top plate 4, the sliding rod 3.5 is connected to the second slot block 3.3, and a second elastic element 3.6 is sleeved on the sliding rod 3.5, one end of the second elastic element 3.6 abuts the top plate 4, and the other end abuts the second slot block 3.3.

[0043] During the forming process, as the first trough block 3.1 and the second trough block 3.3 begin to extrude, the second trough block 3.3 is retracted into the sliding groove 3.4 under the action of the first trough block 3.1, and the second forming groove 12 has a movement tendency to extend out of the sliding groove 3.4 under the action of the second elastic element 3.6, so that the first trough block 3.1 and the second trough block 3.3 squeeze the diaphragm from both end faces respectively, ensuring the forming quality of the notch on the diaphragm.

[0044] like Figure 6 As shown, preferably, a hole-forming column 4.1 is inserted into the bottom plate 1, the hole-forming column 4.1 is passed through the core-jumping block 2.1, and an insertion hole 4.2 for inserting the hole-forming column 4.1 is formed on the extrusion block 3.2. When the top plate 4 and the bottom plate 1 are molded, the hole-forming column 4.1 will pass through the diaphragm and be inserted into the insertion hole 4.2, thereby forming the required hole on the formed diaphragm.

[0045] like Figure 1 、 Figure 4 As shown, a further explanation of the implementation method of the IR heating disk 8 in this embodiment is provided, wherein the IR heating disk 8 is horizontally arranged above the blade plate 2, and a plurality of air passage grooves 4.3 arranged at intervals are formed on the IR heating disk 8, and air can circulate through the air passage grooves 4.3, thereby improving the heating effect of the IR heating disk 8 on the diaphragm, thereby improving the molding quality of the diaphragm.

[0046] Furthermore, the IR heating disk 8 completely covers the knife edge plate 2 along the mold closing projection direction, thereby increasing the heating area of the IR heating disk 8 and ensuring a heating effect on the entire diaphragm to ensure molding quality.

[0047] like Figure 1 、 Figure 5 As shown, in addition, a heating channel 4.4 is formed in the bottom plate 1, and a water inlet pipe 4.5 is connected to the heating channel 4.4. By utilizing the heating channel 4.4 and the water inlet pipe 4.5 inside the bottom plate 1, the bottom plate 1 can be heated by water and cooperate with the hot press to heat the mold, thereby improving the overall heating effect.

[0048] Among them, without adding water channels, the mold will become hotter and hotter as the production time increases. The water channels can control the temperature of the template and improve stability.

[0049] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A punch-free IML film thermoforming mold, characterized in that: It comprises a bottom plate (1) fixed on a hot press machine, a knife-edge plate (2) arranged on the bottom plate (1), and a top plate (4) movably arranged above the knife-edge plate (2); The bottom of the top plate (4) is connected to an upper forming block (6), a placement area (11) for placing a diaphragm is formed on the knife-edge plate (2), a forming groove (12) is formed on the knife-edge plate (2), a lower forming block (7) is movably arranged in the forming groove (12), and an IR heating plate (8) is movably arranged between the knife-edge plate (2) and the top plate (4); A certain heating space (9) is formed between the upper molding block (6) and the lower molding block (7) before the mold is closed, and the IR heating disk (8) has at least a first position and a second position. When the IR heating disk (8) is in the first position, the IR heating disk (8) is placed in the heating space (9) and is located above the knife-edge disk. When the IR heating disk (8) is in the second position, the IR heating disk (8) is separated from the heating space (9).

2. The punch-free IML film thermoforming mold according to claim 1, characterized in that: The forming groove (12) comprises a forming area (1.1) for extruding a diaphragm and a cutting area (1.2) for cutting the diaphragm, and the lower forming block (7) is arranged in the forming area (1.1).

3. The punch-free IML film thermoforming mold according to claim 1, characterized in that: A plurality of positioning pins (1.3) arranged at intervals are inserted into the blade plate (2), and the positioning pins (1.3) extend out of the blade plate (2) and are placed in the placement area (11).

4. The punch-free IML film thermoforming mold according to claim 1, characterized in that: The lower forming block (7) comprises a core jumping block (2.1) slidably arranged in the forming groove (12), and the bottom of the core jumping block (2.1) is connected to a fixed plate (2.2), and a first elastic element (2.3) is arranged at the bottom of the fixed plate (2.2), and one end of the first elastic element (2.3) abuts against the fixed plate (2.2) and the other end abuts against the bottom plate (1).

5. The punch-free IML film thermoforming mold according to claim 4, characterized in that: The lower forming block (7) further comprises a first troughing block (3.1) fixedly mounted on the bottom plate (1); the upper forming block (6) comprises an extrusion block (3.2) fixedly mounted below the top plate (4); and a second troughing block (3.3) slidably mounted on the extrusion block (3.2); a sliding groove (3.4) is formed on the extrusion block (3.2); the second troughing block (3.3) is slidably mounted in the sliding groove (3.4); the first troughing block (3.1) and the second troughing block (3.3) are arranged opposite to each other and have the same outer contour.

6. The punch-free IML film thermoforming mold according to claim 5, characterized in that: A sliding rod (3.5) is inserted into the top plate (4), the sliding rod (3.5) is connected to the second slot block (3.3), and a second elastic element (3.6) is sleeved on the sliding rod (3.5), one end of the second elastic element (3.6) abuts against the top plate (4), and the other end abuts against the second slot block (3.3).

7. The punch-free IML film thermoforming mold according to claim 5, characterized in that: A hole-forming column (4.1) is inserted into the bottom plate (1), the hole-forming column (4.1) is passed through the core jump block (2.1), and an insertion hole (4.2) for inserting the hole-forming column (4.1) is formed on the extrusion block (3.2).

8. The punch-free IML film thermoforming mold according to claim 1, characterized in that: The IR heating plate (8) is horizontally arranged above the knife edge plate (2), and a plurality of air passage slots (4.3) arranged at intervals are formed on the IR heating plate (8).

9. The punch-free IML film thermoforming mold according to claim 1, characterized in that: The IR heating disk (8) completely covers the knife-edge plate (2) along the projection direction.

10. The punch-free IML film thermoforming mold according to claim 1, characterized in that: A heating channel (4.4) is formed in the bottom plate (1), and a water inlet pipe (4.5) is connected to the heating channel (4.4).

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