Pressure maintaining machine

Abstract

The utility model relates to the technical field of a pressure maintaining process after an FPC (Flexible Printed Circuit) board is attached to a thermosensitive film, in particular to a pressure maintaining machine. Comprising a rack, an upper die assembly, a lower die assembly, a lifting mechanism driving the upper die assembly to move and a conveying assembly used for conveying the lower die assembly. The upper die assembly comprises a mounting plate and a plurality of pressure maintaining assemblies. Each pressure maintaining assembly comprises a fixing part, a pressure sensor and a pressure head part, the fixing parts are arranged on the mounting plate, the pressure sensors are connected with the fixing parts, and the pressure head parts are slidably connected with the fixing parts; the lower die assembly comprises a lower die plate, the lower die plate comprises a plurality of lower protruding columns, after the upper die assembly and the lower die assembly are assembled, one pressing head part presses one lower protruding column, one pressure sensor is used for sensing the pressure between one pressing head part and one lower protruding column, and therefore the controllability of the pressure in the unit area in the pressure maintaining process is improved; and the stability of production and processing quality is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the pressure -maintaining procedure technical field after FPC board and heat sensitive adhesive film laminating, especially, a kind of pressure -maintaining machine. BACKGROUND

[0002] FPC / FPC board, also known as flexible circuit board / soft circuit board / soft circuit board / soft circuit board;Because it is soft and bendable, it is widely used, commonly used in various small electrical devices, such as mobile phones, battery modules, etc., according to the production process requirements need to be pasted on the specified position of FPC board Heat-sensitive adhesive film or pressure-sensitive adhesive film is required, and it is placed in pressure -maintaining machine and is pressed together, so that heat-sensitive adhesive film or pressure-sensitive adhesive film is connected firmly with FPC board, but the existing pressure -maintaining equipment appears the phenomenon that the firmness of FPC board and heat-sensitive adhesive film or pressure-sensitive adhesive film in unit area is uneven when pressing FPC board and heat-sensitive adhesive film or pressure-sensitive adhesive film together, affect the stability of production quality, not meet the production requirements, and need to be improved. SUMMARY

[0003] In order to overcome the problem of poor adhesion of FPC board and heat-sensitive adhesive film or pressure-sensitive adhesive film in the prior art, the purpose of the utility model is to provide a pressure -maintaining machine, improve the adhesion, and improve the controllability of production quality.

[0004] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0005] A pressure -maintaining machine, comprising rack, upper die assembly, lower die assembly, lifting mechanism for driving upper die assembly movement and conveying assembly for conveying lower die assembly;

[0006] The upper die assembly comprises mounting plate and a plurality of pressure -maintaining assemblies;

[0007] Each pressure -maintaining assembly comprises fixing part, pressure sensor and pressure head, the fixing part is arranged on the mounting plate, the pressure sensor is connected with the fixing part, and the pressure head is connected with the fixing part;

[0008] The lower die assembly comprises lower die plate, and the lower die plate comprises a plurality of lower convex columns, after the upper die assembly and the lower die assembly are closed, one pressure head holds one lower convex column, and one pressure sensor is used to sense the pressure between one pressure head and one lower convex column.

[0009] Further, the fixing part comprises upper plate, guide column and lower plate connected in sequence, the upper plate and lower plate are spaced apart, the pressure sensor is fixedly connected with the upper plate, and the pressure head is connected with the lower plate.

[0010] Further, the pressure maintaining assembly further comprises a buffer and a micro-distance adjusting piece, two ends of the buffer are connected with the pressure sensor and the pressure head respectively, the mounting plate is provided with a plurality of upper through holes, the fixing piece is provided with a lower through hole, one fixing piece is arranged in one upper through hole, the lower through hole of one fixing piece is coincided with the central axis of the upper through hole, one micro-distance adjusting piece passes through one upper through hole and one lower through hole and abuts against the pressure sensor.

[0011] Further, the pressure sensor comprises a mounting seat, a sensor and a pressure disc, the mounting seat is fixedly connected with the upper plate, the sensor is connected with the mounting seat, the sensor abuts against the pressure disc, and the pressure disc is connected with the buffer.

[0012] Further, the lower die assembly further comprises a bottom plate, a first heat insulation plate, a heating assembly, a second heat insulation plate and a temperature control sensing piece, the bottom plate, the first heat insulation plate, the heating assembly and the lower die plate are sequentially arranged from bottom to top, the second heat insulation plate is arranged on the side surface of the first heat insulation plate, the second heat insulation plate is arranged on the side surface of the heating assembly, and the conveying assembly is connected with the bottom plate.

[0013] Further, the heating assembly comprises a first plate body and a plurality of heating rods, and the heating rods are arranged along the length direction of the first plate body.

[0014] Further, the first plate body is provided with a plurality of shaft holes, and adjacent two shaft holes are arranged at intervals, the shaft holes are arranged along the length direction of the first plate body, one heating rod is arranged in one shaft hole, the shaft hole is arranged at intervals with the lower die plate, the shaft hole is arranged at intervals with the first heat insulation plate, and the shaft hole is arranged at intervals with the second heat insulation plate.

[0015] Further, the lower die assembly further comprises a positioning pin, and the positioning pin is arranged on the upper surface of the lower die plate and extends away from the lower die plate.

[0016] Further, the temperature control sensing piece comprises a bracket and an infrared sensing piece, one end of the bracket is connected with the bottom plate, the other end of the bracket is connected with the infrared sensing piece, and the infrared sensing piece is located obliquely above the heating assembly.

[0017] The utility model discloses beneficial effects: through setting up a plurality of pressure maintaining assemblies on the upper die assembly, each pressure maintaining assembly comprises a fixing piece, a pressure sensor and a pressure head, a plurality of lower convex columns are arranged on the lower die plate, after the upper die assembly and the lower die assembly are combined, one pressure head holds one lower convex column, thereby improving the controllability of pressure in unit area during the pressure maintaining process, and improving the stability of production and processing quality. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1-1 It is the structural schematic diagram of the utility model.

[0019] Figure 1-2 It is internal structure schematic view of the utility model;

[0020] Figure 1-3 It is upper die assembly and lower die assembly split state schematic view of the utility model;

[0021] Figure 2-1 It is upper die assembly structure schematic view of the utility model;

[0022] Figure 2-2 It is pressure maintaining assembly structure schematic view of the utility model;

[0023] Figure 2-3 It is pressure maintaining assembly plane section view of the utility model;

[0024] Figure 2-4 It is mounting plate and pressure maintaining assembly cross section structure schematic view of the utility model;

[0025] Figure 3-1 It is lower die assembly structure schematic view of the utility model;

[0026] Figure 3-2 It is lower die assembly split structure schematic view of the utility model.

[0027] Reference signs include:

[0028] 100 - upper die assembly 11 - mounting plate 1101 - upper through hole

[0029] 12 - pressure maintaining assembly 121 - fixed part 1211 - upper plate part

[0030] 1212 - guide column 1213 - lower plate part 122 - pressure sensor

[0031] 1221 - mounting seat 1222 - sensor 1223 - pressure disc

[0032] 1201 - lower through hole

[0033] 123 - pressure head 1231 - metal plate 1232 - high temperature resistant part

[0034] 1233 - movable part 124 - buffer part 1241 - spring

[0035] 1242 - spring column 125 - micro distance adjusting part

[0036] 200 - lower die assembly 21 - bottom plate 22 - first heat insulation plate

[0037] 23 - heating assembly 231 - first plate body 2311 - shaft hole

[0038] 232 - heating rod 24 - lower die plate 241 - lower convex column

[0039] 25 - second heat insulation plate 26 - temperature control induction piece 261 - support

[0040] 2611 - first plate 2612 - second plate 2613 - third plate

[0041] 262 - infrared induction piece 27 - positioning pin

[0042] 300 - lifting mechanism 400 - conveying assembly 500 - carrier. DETAILED DESCRIPTION

[0043] In order to facilitate the understanding of those skilled in the art, the utility model will be further described below in combination with examples and drawings, and the content mentioned in the embodiment is not a limitation of the utility model.

[0044] Please refer to Figures 1-1 to 3-2 The utility model relates to a kind of pressure maintaining machines, including rack, upper die assembly 100, lower die assembly 200, lifting mechanism 300 for driving upper die assembly 100 movement and conveying assembly 400 for conveying lower die assembly 200;

[0045] The upper die assembly 100 includes mounting plate 11 and several pressure maintaining assemblies 12;

[0046] Each pressure maintaining assembly 12 includes fixing piece 121, pressure sensor 122 and pressure head 123, the fixing piece 121 is located in mounting plate 11, the pressure sensor 122 is connected with the fixing piece 121, the pressure head 123 is slidably connected with the fixing piece 121;

[0047] The pressure head 123 includes metal plate 1231 and high-temperature-resistant piece 1232, the metal plate 1231 is connected with the pressure sensor 122, the high-temperature-resistant piece 1232 is connected with the metal plate 1231 and protrudes out the bottom surface of metal plate 1231;

[0048] The lower die assembly 200 includes lower die plate 24, the lower die plate 24 is used to carry external carrier 500, the lower die plate 24 includes several lower convex columns 241, after the upper die assembly 100 and lower die assembly 200 are closed, one high-temperature-resistant piece 1232 holds one lower convex column 241, and one pressure sensor 122 is used to induct the pressure between one pressure head 123 and one lower convex column 241.

[0049] Specifically, in the embodiment, the external carrier 500 carries the FPC board with the thermal sensitive film, the carrier 500 enters the directly below of the upper mold assembly 100 under the transmission of the conveying assembly 400, then the lifting mechanism 300 drives the mounting plate 11 to move downward, and the several pressure maintaining assemblies 12 move downward synchronously until the high-temperature-resistant piece 1232 is pressed and held on the upper surface of the lower protruding column 241. Preferably, the number of the pressure maintaining assemblies 12 is the same as the number of the lower protruding columns 241, one pressure maintaining assembly 12 cooperates with one lower protruding column 241 to press and hold the external thermal sensitive film on the external FPC board, so as to realize the purpose of individually controlling the lamination pressure of each lamination part. The pressure head part 123 includes the metal plate 1231 and the high-temperature-resistant piece 1232, the high-temperature-resistant piece 1232 is processed by using the high-temperature-resistant silica gel, so as to improve the service life of the pressure head part 123. The metal plate 1231 is arranged, so that the reaction force generated by the high-temperature-resistant piece 1232 during the working process is uniformly distributed on the metal plate 1231, the anti-deformation force of the whole pressure head part 123 is improved, and thus the stability of the lamination pressure is ensured. One fixing piece 121 is connected with one pressure sensor 122, and one pressure sensor 122 is used for sensing the pressure between one pressure head part 123 and one lower protruding column 241, so as to realize the purpose of observing and respectively adjusting the pressure value of each lamination part in real time, so that the pressure of each lamination part is within the effective range, and thus the controllability of the processing quality and the stability of the product quality are improved.

[0050] By arranging the several pressure maintaining assemblies 12 on the upper mold assembly 100, each pressure maintaining assembly 12 includes the fixing piece 121, the pressure sensor 122 and the pressure head part 123, and the several lower protruding columns 241 are arranged on the lower mold plate 24. After the upper mold assembly 100 and the lower mold assembly 200 are closed, one pressure sensor 122 is used for sensing the pressure between one pressure head part 123 and one lower protruding column 241, so as to improve the controllability of the pressure per unit area during the pressure maintaining process and the stability of the production and processing quality.

[0051] The fixing piece 121 includes the upper plate piece 1211, the guide column 1212 and the lower plate piece 1213 which are connected in sequence, the upper plate piece 1211 and the lower plate piece 1213 are arranged at intervals, the pressure sensor 122 is fixedly connected with the upper plate piece 1211, and the pressure head part 123 is slidingly connected with the lower plate piece 1213, so as to ensure the stability of the upward and downward movement direction of the pressure head part 123. The pressure sensor 122 is located between the upper plate piece 1211 and the lower plate piece 1213, so as to protect the pressure sensor 122.

[0052] The pressing head 123 is further provided with a movable part 1233 located between the upper plate 1211 and the lower plate 1213 and close to the lower plate 1213, the movable part 1233 is connected with the metal plate 1231 and slides along the guide column 1212, preferably, the lower plate 1213 is provided with a through hole, the movable part 1233 comprises an upper connecting part and a lower connecting part connected in sequence, the radial size of the upper connecting part is larger than that of the lower connecting part, and the lower connecting part is connected with the metal plate 1231 through the through hole, so that the pressing head 123 can move up and down along the guide column 1212 and can be in contact with the external part to be attached, meeting the use requirement.

[0053] The pressure maintaining assembly 12 further comprises a buffer 124 and a micro-distance adjusting part 125, two ends of the buffer 124 are connected with the pressure sensor 122 and the movable part 1233 respectively, the mounting plate 11 is provided with a plurality of upper through holes 1101, the fixing part 121 is provided with a lower through hole 1201, one fixing part 121 is arranged in one upper through hole 1101, the lower through hole 1201 of one fixing part 121 is coincided with the central axis of the upper through hole 1101, and one micro-distance adjusting part 125 passes through one upper through hole 1101 and one lower through hole 1201 and is in contact with the pressure sensor 122; preferably, the buffer 124 comprises a spring 1241 and a spring column 1242, one end of the spring column 1242 is fixedly connected with the movable part 1233, the other end of the spring column 1242 is movably connected with the pressure sensor 122, and the spring 1241 is sleeved on the spring column 1242, when the pressure maintaining assembly 12 is pressed downward as a whole, the pressing head 123 first contacts the lower protruding column 241, under the action of the buffer 124, the pressure sensed by the pressure sensor 122 gradually increases from small to a constant value, so that the instantaneous large pressure is avoided, the pressure sensing error of the pressure sensor 122 is avoided, the accuracy of the pressure parameter is further ensured, the micro-distance adjusting part 125 adopts a micrometer, the position of the pressure sensor 122 in the longitudinal direction is adjusted according to the requirement, the vertical distance between the pressure sensor 122 and the buffer 124 is within an effective range, and the sensing sensitivity and authenticity of the pressure sensor 122 are improved.

[0054] The pressure sensor 122 comprises a mounting seat 1221, a sensor 1222 and a pressure disc 1223. The mounting seat 1221 is fixedly connected with the upper plate 1211. The sensor 1222 is connected with the mounting seat 1221. The sensor 1222 is in abutment with the pressure disc 1223. The pressure disc 1223 is connected with the buffer 124. The mounting seat 1221 is fixedly connected with the upper plate 1211. The mounting seat 1221 is used for mounting the sensor 1222. The pressure disc 1223 is provided with a blind hole. The blind hole starts from the lower end surface of the pressure disc 1223. The spring column 1242 of the buffer 124 protrudes into the blind hole and slides up and down along the blind hole, so that the pressure sensor 122 compresses the spring 1241 in the process of pressing down, and the pressure sensed by the pressure sensor 122 gradually increases from small to large until constant, further accurately correcting the pressure range.

[0055] The lower mold assembly 200 further comprises a bottom plate 21, a first heat insulation plate 22, a heating assembly 23, a second heat insulation plate 25 and a temperature control sensing piece 26. The bottom plate 21, the first heat insulation plate 22, the heating assembly 23 and the lower mold plate 24 are sequentially arranged from bottom to top. The second heat insulation plate 25 is arranged on the side surface of the first heat insulation plate 22. The second heat insulation plate 25 is arranged on the side surface of the heating assembly 23. The first heat insulation plate 22 is synthesized by glass fiber material and high-heat-resistant composite material. The second heat insulation plate 25 is processed by heat insulation cotton. The number of the second heat insulation plate 25 is two. The two second heat insulation plates 25 are respectively attached to the two side surfaces in the length direction of the lower mold assembly 200. Preferably, the second heat insulation plate 25 is attached to the side surface of the first heat insulation plate 22 and the heating assembly 23, effectively isolating the heat generated by the heating assembly 23 from the outside air, and further improving the heat energy utilization rate of the heating assembly 23.

[0056] The number of the temperature control sensing piece 26 is two groups. The two groups of temperature control sensing pieces 26 respectively sense the temperature of the two side end surfaces in the length direction of the lower mold plate 24, and instantaneously monitor the temperature of the two ends in the length direction of the lower mold plate 24, so that the overall working temperature of the lower mold plate 24 is within the preset range, further ensuring the stability of the processing quality.

[0057] The conveying assembly 400 is connected with the bottom plate 21.

[0058] The heating assembly 23 comprises a first plate body 231 and a plurality of heating rods 232. The heating rods 232 are arranged along the length direction of the first plate body 231. The first plate body 231 is in the form of a flat plate. The heating rods 232 are connected with an external power supply, converting electric energy into heat energy. The heating rods 232 are equally spaced on the first plate body 231, thereby ensuring that the heat generated in the unit volume of the first plate body 231 is balanced.

[0059] The first plate body 231 is provided with a plurality of shaft holes 2311, and adjacent two shaft holes 2311 are arranged at intervals. The shaft holes 2311 are arranged along the length direction of the first plate body 231. One heating rod 232 is arranged in one shaft hole 2311. The shaft hole 2311 is arranged at intervals with the lower die plate 24. The shaft hole 2311 is arranged at intervals with the first heat insulation plate 22. The shaft hole 2311 is arranged at intervals with the second heat insulation plate 25. The arrangement of the through hole 2311 can arrange the heating rod 232 in the first plate body 231, and can protect the heating rod 232, improve the safety and service life.

[0060] The lower die assembly 200 further comprises a positioning pin 27 arranged on the upper surface of the lower die plate 24 and extending away from the lower die plate 24. The arrangement of the positioning pin 27 facilitates the accurate connection between the external carrier 500 and the lower die plate 24, and further improves the stability of the production quality.

[0061] The temperature control sensing part 26 comprises a bracket 261 and an infrared sensing part 262. One end of the bracket 261 is connected with the bottom plate 21, and the other end of the bracket 261 is connected with the infrared sensing part 262. The infrared sensing part 262 is used to detect the working temperature of the lower die plate 24 in time, so as to ensure that the working temperature of the lower die plate 24 is within the set range. The infrared sensing part 262 is located obliquely above the heating assembly 23, so as to avoid the influence of the heat generated by the heating assembly 23 on the detection of the infrared sensing part 262, and further ensure the accuracy of the production process parameters.

[0062] The bracket 261 comprises a first plate 2611, a second plate 2612 and a third plate 2613 connected in sequence. The first plate 2611 and the second plate 2612 are arranged at intersections. The third plate 2613 and the second plate 2612 are arranged at intersections. The first plate 2611 and the third plate 2613 are respectively located on the left and right sides of the second plate 2612. The first plate 2611 and the third plate 2613 are respectively located on the upper and lower sides of the second plate 2612. The first plate 2611 is connected with the bottom plate 21. The infrared sensing part 262 is connected with the third plate 2613. Preferably, the first plate 2611, the second plate 2612 and the third plate 2613 are connected in sequence. The first plate 2611 and the second plate 2612 are connected in an L shape. The second plate 2612 and the third plate 2613 are connected in an L shape. The third plate 2613 is away from the lower die plate 24. The infrared sensing part 262 is installed on the third plate 2613. The infrared sensing part 262 is arranged at intervals with the heating assembly 23. The influence of the heat generated by the heating assembly 23 on the sensing temperature of the infrared sensing part 262 is further reduced. The authenticity of the temperature detection of the infrared sensing part 262 on the lower die plate 24 is improved.

[0063] The above merely describes preferred embodiments of the present application, and for those skilled in the art, according to the idea of the present application, changes can be made in the specific implementation manner and application range, and the content of the specification should not be understood as a limitation of the present application.

Claims

1. A press, comprising a frame, characterized in that: The upper die assembly (100), the lower die assembly (200), the lifting mechanism (300) for driving the upper die assembly (100) to move and the conveying assembly (400) for conveying the lower die assembly (200) are further included; The upper die assembly (100) comprises a mounting plate (11) and a plurality of pressure maintaining assemblies (12); Each pressure maintaining assembly (12) comprises a fixing member (121), a pressure sensor (122) and a pressure head (123), the fixing member (121) is arranged on the mounting plate (11), the pressure sensor (122) is connected with the fixing member (121), and the pressure head (123) is in sliding connection with the fixing member (121); The lower die assembly (200) comprises a lower die plate (24), the lower die plate (24) comprises a plurality of lower protruding columns (241), after the upper die assembly (100) and the lower die assembly (200) are closed, one pressure head (123) holds one lower protruding column (241), and one pressure sensor (122) is used for sensing the pressure between one pressure head (123) and one lower protruding column (241).

2. The pressurizing machine according to claim 1, characterized by: The fixing member (121) comprises an upper plate member (1211), a guide column (1212) and a lower plate member (1213) connected in sequence, the upper plate member (1211) and the lower plate member (1213) are arranged at intervals, the pressure sensor (122) is fixedly connected with the upper plate member (1211), and the pressure head (123) is in sliding connection with the lower plate member (1213).

3. The pressurizing machine according to claim 2, characterized in that: The pressure maintaining assembly (12) further comprises a buffer member (124) and a micro-distance adjusting member (125), two ends of the buffer member (124) are connected with the pressure sensor (122) and the pressure head (123) respectively, the mounting plate (11) is provided with a plurality of upper through holes (1101), the fixing member (121) is provided with a lower through hole (1201), one fixing member (121) is arranged in one upper through hole (1101), the lower through hole (1201) of one fixing member (121) is coincided with the central axis of the upper through hole (1101), and one micro-distance adjusting member (125) passes through one upper through hole (1101) and one lower through hole (1201) and abuts against the pressure sensor (122).

4. The pressurizing machine according to claim 3, characterized in that: The pressure sensor (122) comprises a mounting seat (1221), a sensor (1222) and a pressure disc (1223), the mounting seat (1221) is fixedly connected with the upper plate member (1211), the sensor (1222) is connected with the mounting seat (1221), the sensor (1222) abuts against the pressure disc (1223), and the pressure disc (1223) is connected with the buffer member (124).

5. The pressurizing machine according to claim 1, characterized by: The lower mold assembly (200) further comprises a bottom plate (21), a first heat insulation plate (22), a heating assembly (23), a second heat insulation plate (25) and a temperature control induction piece (26), the bottom plate (21), the first heat insulation plate (22), the heating assembly (23) and the lower mold plate (24) are sequentially arranged from bottom to top, the second heat insulation plate (25) is arranged on the side surface of the first heat insulation plate (22), the second heat insulation plate (25) is arranged on the side surface of the heating assembly (23), and the conveying assembly (400) is connected with the bottom plate (21).

6. The pressurizing machine according to claim 5, characterized in that: The heating assembly (23) comprises a first plate body (231) and a plurality of heating rods (232), and the heating rods (232) are arranged along the length direction of the first plate body (231).

7. The pressurizing machine according to claim 6, characterized in that: The first plate body (231) is provided with a plurality of shaft holes (2311), and the adjacent two shaft holes (2311) are arranged at intervals, the shaft holes (2311) are arranged along the length direction of the first plate body (231), one heating rod (232) is arranged in one shaft hole (2311), the shaft holes (2311) are arranged at intervals with the lower mold plate (24), the shaft holes (2311) are arranged at intervals with the first heat insulation plate (22), and the shaft holes (2311) are arranged at intervals with the second heat insulation plate (25).

8. The pressurizing machine of claim 1, wherein: The lower mold assembly (200) further comprises a positioning pin (27), and the positioning pin (27) is arranged on the upper surface of the lower mold plate (24) and extends away from the lower mold plate (24).

9. The pressurizing machine according to claim 5, characterized by: The temperature control induction piece (26) comprises a bracket (261) and an infrared induction piece (262), one end of the bracket (261) is connected with the bottom plate (21), the other end of the bracket (261) is connected with the infrared induction piece (262), and the infrared induction piece (262) is located obliquely above the heating assembly (23).

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