Circuit board hot press with anti-scald protection structure

Abstract

The utility model relates to a circuit board hot press with an anti-scald protection structure, which comprises an upper die and a bottom die, the upper die comprises a heating block, a heat conduction copper column and a partition plate, the heat conduction copper column is vertically fixed on the lower side of the heating block, and the partition plate is connected with the heating block through a guide pin; the bottom die comprises a positioning jig for placing a circuit board and a plastic part, and the positioning jig is upwards and convexly provided with a supporting column; when the upper die moves towards the bottom die to perform hot pressing operation, the supporting columns eject the partition plate to the heating block, so that the lower ends of the heat conduction copper columns penetrate through the avoiding holes of the partition plate to perform hot pressing operation on the circuit board and the plastic part on the positioning jig; and when the upper die is far away from the bottom die, the partition plate moves in the direction far away from the heating block, so that the heat-conducting copper column retreats between the partition plate and the heating block, and the heat-conducting copper column is separated from the feeding and discharging area through the partition plate. The exposed heat conduction copper column is hidden through the partition plate, and after the upper die is lifted in place, the heat conduction copper column retreats between the partition plate and the heating block, so that workers are prevented from being scalded.

Description

Technical Field

[0001] The utility model relates to the technical field of PCB board production, in particular to a circuit board hot press with an anti-scalding protection structure. Background Art

[0002] Today's electronic devices all require circuit boards for circuit control. Many electronic components need to be installed on the circuit boards. These electronic components can be fixed on the circuit boards by soldering. In addition, some plastic parts that are equipped with these electronic components need to be riveted to the circuit boards by hot pressing.

[0003] Hot press riveting of circuit boards and plastic parts generally uses a hot press machine. When performing hot press operations, the circuit boards and plastic parts need to be manually placed in the positioning fixture below. During the lifting action, the worker's hands are likely to touch the copper heat-conducting columns used for hot pressing above. During a long working process, hand burns are likely to occur, which is not conducive to production safety. Utility Model Content

[0004] In order to solve the deficiencies of the prior art, the utility model provides a circuit board hot press with an anti-scalding protection structure.

[0005] The utility model provides a circuit board hot pressing machine with an anti-scalding protection structure, comprising an upper mold and a bottom mold, the upper mold being movably arranged just above the bottom mold by a lifting assembly, and a loading and unloading area being formed between the bottom mold and the upper mold; the upper mold comprising a heating block, a heat-conducting copper column, and a partition, the heat-conducting copper column being vertically fixed to the lower side of the heating block and being arranged toward the bottom mold, the partition being connected to the heating block by a guide pin, and being movably arranged between the heating block and the bottom mold; the bottom mold comprising a positioning fixture for placing circuit boards and plastic parts, the positioning fixture being provided with a support column protruding upward; when the upper mold moves toward the bottom mold for hot pressing operation, the support column pushes the partition toward the heating block, so that the lower end of the heat-conducting copper column passes through the avoidance hole of the partition, so as to perform hot pressing operation on the circuit board and plastic part on the positioning fixture; when the upper mold moves away from the bottom mold, the partition moves in a direction away from the heating block, so that the heat-conducting copper column retreats between the partition and the heating block, so as to separate the heat-conducting copper column from the loading and unloading area by the partition.

[0006] In some embodiments, the partition is provided with a through hole, the guide pin is passed through the through hole, a guide head is provided at the lower end of the guide pin, the guide head is located below the partition, and the diameter of the guide head is larger than the inner diameter of the through hole to limit the partition and the guide pin from detaching on their own.

[0007] In some embodiments, a guide hole is provided on the support column, and the guide hole cooperates with the guide head of the guide pin to guide the docking of the upper mold and the bottom mold during the hot pressing operation.

[0008] In some embodiments, the partition is provided with a limiting groove matching the shape of the guide head on the lower side of the through hole, and when the partition is away from the heating block, the guide head moves into the limiting groove.

[0009] In some embodiments, a spring is sleeved on the guide pin, and two ends of the spring respectively abut against the heating block and the partition.

[0010] In some embodiments, the heating block includes a heating plate and a fixed plate, which are arranged parallel to each other. A plurality of heating heads are provided on the heating plate, and the heat-conducting copper column is connected to the heating plate and is clamped and fixed by the fixed plate.

[0011] In some embodiments, the lifting assembly includes a top plate, a lifting plate, a lifting guide rod and a lifting cylinder. The top plate is connected to the workbench of the frame through a column. The upper side of the lifting plate is movably connected to the top plate through a plurality of lifting guide rods. The lower side of the lifting plate is fixedly connected to the heating block of the upper mold through a plurality of fixed columns. The lifting cylinder is fixed above the top plate. The driving end of the lifting cylinder is connected to the lifting plate to drive the lifting plate and the upper mold to move along the lifting guide rod.

[0012] In some embodiments, the workbench of the frame is provided with a plurality of positioning blocks, and the positioning fixture is clamped between the plurality of positioning blocks.

[0013] In some embodiments, a storage table is extended outward from one side of the workbench, and the storage table is used to place circuit boards and plastic parts. The positioning fixture is sunken and has a positioning groove for placing circuit boards and plastic parts. Loading and unloading operations of circuit boards and plastic parts are carried out between the positioning groove and the storage table.

[0014] In some embodiments, the storage table is vertically provided with a connecting plate, and the connecting plate is fixed to the frame.

[0015] Compared with the prior art, the beneficial effect of the present invention is that the upper mold is set above the bottom mold in an open and close manner through a lifting assembly, and the exposed heat-conducting copper pillars are hidden by a partition. After the upper mold is lifted into place, the heat-conducting copper pillars retreat into between the partition and the heating block, so that the partition separates the heat-conducting copper pillars from the loading and unloading areas. When workers place circuit boards and plastic parts, their hands will only touch the partitions and will not touch the heat-conducting copper pillars, thereby protecting the workers and avoiding burns. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is one of the three-dimensional structural schematic diagrams of a circuit board hot press with an anti-scalding protection structure according to an embodiment of the present application.

[0017] Figure 2This is the second three-dimensional structural schematic diagram of the circuit board hot press with anti-scalding protection structure according to the embodiment of the present application.

[0018] Figure 3 It is a front view structural schematic diagram of a circuit board hot press with an anti-scalding protection structure according to an embodiment of the present application.

[0019] Figure 4 This is a front view structural schematic diagram of a circuit board hot press machine with an anti-scalding protection structure according to an embodiment of the present application during hot pressing operation.

[0020] Reference numerals: 101, upper mold; 102, bottom mold; 103, loading and unloading area;

[0021] 1. Heating block; 11. Heating plate; 12. Fixing plate; 13. Heating head; 14. Thermal conductive copper column;

[0022] 2. Partition; 21. Avoidance hole; 22. Through hole; 23. Limiting groove;

[0023] 3. Guide pin; 31. Guide head; 32. Spring;

[0024] 4. Positioning fixture; 41. Positioning groove; 42. Support column; 43. Guide hole;

[0025] 5. Lifting assembly; 51. Top plate; 52. Lifting plate; 53. Lifting guide rod; 54. Lifting cylinder; 55. Fixed column;

[0026] 6. Frame; 61. Workbench; 62. Positioning block; 63. Column; 64. Storage table; 65. Connecting plate. DETAILED DESCRIPTION

[0027] The specific implementation of the present utility model is introduced with reference to the accompanying drawings.

[0028] refer to Figure 1 The figure is a schematic diagram of the three-dimensional structure of a circuit board hot press with an anti-scalding protection structure. The lower part is a frame 6, the upper part is a lifting assembly 5, and the middle part is an upper mold 101 and a bottom mold 102. The upper mold 101 is driven by the lifting assembly 5 to rise and fall relative to the bottom mold 102. The bottom mold 102 is set on the workbench 61 of the frame 6 and is used to place circuit boards and plastic parts for hot pressing operations. The high-temperature heat-conducting copper pillars 14 of the upper mold 101 heat and soften the plastic rivets on the plastic parts, and the rivets are hot-pressed with the circuit board, thereby fixing the circuit board and the plastic parts.

[0029] refer to Figures 1 to 4A circuit board hot press with an anti-scalding protection structure includes an upper mold 101 and a bottom mold 102. The upper mold 101 is movably arranged just above the bottom mold 102 through a lifting assembly 5. A loading and unloading area 103 is formed between the bottom mold 102 and the upper mold 101; the upper mold 101 includes a heating block 1, a heat-conducting copper column 14, and a partition 2. The heat-conducting copper column 14 is vertically fixed to the lower side of the heating block 1 and is arranged toward the bottom mold 102. The partition 2 is connected to the heating block 1 through a guide pin 3 and is movably arranged between the heating block 1 and the bottom mold 102; the bottom mold 102 ... and a positioning jig 4 for plastic parts, the positioning jig 4 is provided with a support column 42 protruding upward; when the upper mold 101 moves toward the bottom mold 102 for hot pressing, the support column 42 pushes the partition 2 toward the heating block 1, so that the lower end of the heat-conducting copper column 14 passes through the avoidance hole 21 of the partition 2, so as to perform hot pressing on the circuit board and plastic parts on the positioning jig 4; when the upper mold 101 moves away from the bottom mold 102, the partition 2 moves in the direction away from the heating block 1, so that the heat-conducting copper column 14 retreats between the partition 2 and the heating block 1, so as to separate the heat-conducting copper column 14 from the loading and unloading area 103 through the partition 2.

[0030] In the circuit board hot press with an anti-scalding protection structure of the present application, the upper mold 101 is arranged above the bottom mold 102 in an open and close manner through the lifting component 5, and the exposed heat-conducting copper pillars 14 are hidden by the partition 2. After the upper mold 101 is lifted into place, the heat-conducting copper pillars 14 retreat into between the partition 2 and the heating block 1, so that the partition 2 separates the heat-conducting copper pillars 14 from the loading and unloading area 103. When workers place circuit boards and plastic parts, their hands will only touch the partition 2 and will not touch the heat-conducting copper pillars 14, thereby protecting the workers from being burned.

[0031] In order to realize the movable connection between the partition plate 2 and the guide pin 3, in this embodiment, reference Figure 4 The partition 2 is provided with a through hole 22, the guide pin 3 is passed through the through hole 22, and a guide head 31 is provided at the lower end of the guide pin 3. The guide head 31 is located below the partition 2. The diameter of the guide head 31 is larger than the inner diameter of the through hole 22 to limit the partition 2 and the guide pin 3 from detaching on their own.

[0032] It can be understood that with such a setting, the guide pin 3 guides the movement of the partition 2, and the partition 2 is hoisted under the heating block 1 through the guide pin 3 and the guide head 31, so that the partition 2 can cooperate with the support column 42 of the positioning fixture 4. The guide head 31 with a larger diameter cannot pass through the through hole 22, so that the partition 2 rests on the guide head 31 and will not detach from the guide pin 3, ensuring that the partition 2 can move up and down stably along the guide pin 3.

[0033] In order to ensure the accuracy of the hot pressing operation, in this embodiment, reference Figures 1 to 4A guide hole 43 is provided on the support column 42, and the guide hole 43 cooperates with the guide head 31 of the guide pin 3 to guide the docking of the upper mold 101 and the bottom mold 102 during the hot pressing operation.

[0034] It can be understood that with such a configuration, the lower end of the guide head 31 is a conical surface, which can facilitate the insertion of the guide head 31 into the guide hole 43, so that the guide pin 3 is inserted into the guide hole 43, thereby realizing the docking of the heating block 1 and the positioning fixture 4. After the docking is completed, the support column 42 will support the partition 2 and cannot move downward, while the heating block 1 will continue to move downward, so that the heat-conducting copper column 14 passes through the partition 2, and the heat-conducting copper column 14 can accurately contact the rivets of the plastic part on the bottom mold 102 to perform hot pressing operations.

[0035] In order to prevent workers from touching the guide head 31, in this embodiment, Figure 4 The partition plate 2 is provided with a limiting groove 23 on the lower side of the through hole 22 , which matches the shape of the guide head 31 . When the partition plate 2 moves away from the heating block 1 , the guide head 31 moves into the limiting groove 23 .

[0036] It can be understood that, with such a configuration, there is a certain gap between the through hole 22 and the guide pin 3, so the partition 2 is basically in direct contact with the guide head 31. The thermal conductivity of the partition 2 and the guide head 31 is low, which can achieve heat insulation. Moving the guide head 31 to the limit groove 23 for hiding can ensure that the height of the guide head 31 protruding relative to the partition 2 is small, which can effectively prevent workers from touching the guide head 31 when loading and unloading circuit boards and plastic parts, and prevent workers' hands from being scratched or hit.

[0037] In order to quickly reset the partition 2, in this embodiment, reference Figures 1 to 4 A spring 32 is sleeved on the guide pin 3, and both ends of the spring 32 are respectively against the heating block 1 and the partition plate 2.

[0038] It can be understood that with such an arrangement, when hot pressing is carried out, the support column 42 pushes the partition 2 toward the heating block 1, and the distance between the partition 2 and the heating block 1 becomes shorter and shorter, thereby continuously compressing the spring 32. After the hot pressing is completed, the lifting assembly 5 drives the upper mold 101 to rise, and the heating block 1 gradually rises. The spring 32 pushes the partition 2 gradually away from the heating block 1 until the partition 2 and the guide head 31 are in contact. Under the action of the spring 32, the partition 2 has been reset before the heating block 1 rises to the highest point, so that the partition 2 can better separate the heat-conducting copper column 14 from the loading and unloading area 103 below, further ensuring the safety of workers at work.

[0039] In order to heat the heat-conducting copper pillar 14, in this embodiment, reference Figure 2The heating block 1 includes a heating plate 11 and a fixed plate 12. The heating plate 11 and the fixed plate 12 are arranged parallel to each other. A plurality of heating heads 13 are arranged on the heating plate 11. The heat-conducting copper column 14 is connected to the heating plate 11 and is clamped and fixed by the fixed plate 12.

[0040] It can be understood that, with such an arrangement, three heating heads 13 are inserted side by side on the heating plate 11, and the heating heads 13 generate heat by electric heating, and the heat is transferred to the heating plate 11 and the heat-conducting copper pillars 14, so that the heat-conducting copper pillars 14 maintain a high temperature. In order to ensure a stable connection between the heat-conducting copper pillars 14 and the heating plate 11, a fixing plate 12 is provided under the heating plate 11, and the heat-conducting copper pillars 14 are stably fixed on the heating plate 11 through the fixing plate 12.

[0041] In order to drive the upper mold 101 to rise and fall, in this embodiment, reference Figures 1 to 4 The lifting assembly 5 includes a top plate 51, a lifting plate 52, a lifting guide rod 53 and a lifting cylinder 54. The top plate 51 is connected to the workbench 61 of the frame 6 through a column 63. The upper side of the lifting plate 52 is movably connected to the top plate 51 through multiple lifting guide rods 53. The lower side of the lifting plate 52 is fixedly connected to the heating block 1 of the upper mold 101 through multiple fixed columns 55. The lifting cylinder 54 is fixed above the top plate 51. The driving end of the lifting cylinder 54 is connected to the lifting plate 52 to drive the lifting plate 52 and the upper mold 101 to move along the lifting guide rod 53.

[0042] It can be understood that with such a configuration, the lifting assembly 5 uses the lifting cylinder 54 as a power source. The lifting cylinder 54 has a fast startup response and can quickly drive the upper mold 101 to move up and down. It is guided by the lifting guide rod 53 to ensure that the lifting plate 52 can move up and down stably. The heating block 1 of the upper mold 101 is fixed to the lower side of the lifting plate 52 through the fixed column 55, and is insulated by the fixed column 55 to prevent the heat of the heating block 1 from being transferred to the lifting plate 52, causing excessive heat consumption of the heating block 1, which is beneficial to saving energy.

[0043] In order to fix the positioning fixture 4, in this embodiment, refer to Figure 1 and Figure 2 The workbench 61 of the frame 6 is provided with a plurality of positioning blocks 62 , and the positioning fixture 4 is clamped between the plurality of positioning blocks 62 .

[0044] It is understandable that with such a configuration, the positioning jig 4 can be replaced according to different circuit boards. The positioning jig 4 is clamped by the positioning space between the three positioning blocks 62, which can facilitate the replacement of the positioning jig 4 to be compatible with hot pressing operations of different circuit boards and plastic parts.

[0045] In order to facilitate the loading and unloading of circuit boards and plastic parts, in this embodiment, reference Figure 1 and Figure 2A storage platform 64 extends outward from one side of the workbench 61. The storage platform 64 is used to place circuit boards and plastic parts. The positioning fixture 4 is sunken and has a positioning groove 41 for placing circuit boards and plastic parts. The loading and unloading operations of circuit boards and plastic parts are carried out between the positioning groove 41 and the storage platform 64.

[0046] It is understandable that with such an arrangement, workers can preliminarily position the circuit board and the plastic part at the storage table 64 so that the rivets of the plastic part are positioned in the riveting holes of the circuit board. When loading and unloading, the hot-pressed riveted circuit board is taken from the positioning groove 41 to the side of the workbench 61, and then the positioned circuit board and plastic part are directly placed together in the positioning groove 41, which can improve efficiency.

[0047] In order to stably install the storage table 64 on the outside of the workbench 61, in this embodiment, reference Figure 1 The storage platform 64 is vertically provided with a connecting plate 65, and the connecting plate 65 is fixed to the frame 6.

[0048] It can be understood that with such an arrangement, the lower end of the storage table 64 is fixed to the frame 6 through the connecting plate 65, so that the upper end surface of the storage table 64 can be flush with the workbench 61, so that larger circuit boards and plastic parts can be placed on the plane between the storage table 64 and the workbench 61, making it convenient to load and unload circuit boards and plastic parts.

[0049] In the embodiment of the present application, the upper mold 101 is set above the bottom mold 102 in an open and close manner through the lifting component 5. The bottom mold 102 places circuit boards and plastic parts. The storage table 64 can perform preliminary positioning of the circuit boards and plastic parts. The partition 2 is hoisted under the heating block 1 through four guide pins 3. The exposed thermal copper pillars 14 can be hidden by the partition 2. After the upper mold 101 is lifted into place, the thermal copper pillars 14 retreat into between the partition 2 and the heating block 1, so that the partition 2 separates the thermal copper pillars 14 from the loading and unloading area 103. When workers place circuit boards and plastic parts, their hands will only touch the partition 2 and will not touch the thermal copper pillars 14, thereby protecting the workers from burns.

[0050] The above does not limit the technical scope of the present invention. Any modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A circuit board hot press with an anti-scalding protection structure, characterized in that: The cam is fixed to the bottom mold and the heat-conducting copper column is moved upwards to the bottom mold, and the heat-conducting copper column is moved upwards to the bottom mold to separate the heat-conducting copper column from the heat-conducting copper column and the heat-conducting copper column.

2. The circuit board hot press with anti-scalding protection structure according to claim 1, characterized in that: The partition is provided with a through hole, the guide pin is passed through the through hole, and a guide head is provided at the lower end of the guide pin. The guide head is located below the partition, and the diameter of the guide head is larger than the inner diameter of the through hole to limit the partition and the guide pin from separating on their own.

3. The circuit board hot press with anti-scalding protection structure according to claim 2, characterized in that: A guide hole is provided on the support column, and the guide hole cooperates with the guide head of the guide pin to guide the docking of the upper mold and the bottom mold during hot pressing operation.

4. The circuit board hot press with anti-scalding protection structure according to claim 2, characterized in that: The partition is provided with a limiting groove matching the shape of the guide head on the lower side of the through hole. When the partition is away from the heating block, the guide head moves into the limiting groove.

5. The circuit board hot press with anti-scalding protection structure according to claim 2, characterized in that: A spring is sleeved on the guide pin, and two ends of the spring respectively abut against the heating block and the partition.

6. The circuit board hot press with anti-scalding protection structure according to claim 1, characterized in that: The heating block includes a heating plate and a fixing plate, which are arranged parallel to each other. A plurality of heating heads are arranged on the heating plate. The heat-conducting copper column is connected to the heating plate and is clamped and fixed by the fixing plate.

7. The circuit board hot press with anti-scalding protection structure according to claim 1, characterized in that: The lifting assembly includes a top plate, a lifting plate, a lifting guide rod and a lifting cylinder. The top plate is connected to the workbench of the frame through a column. The upper side of the lifting plate is movably connected to the top plate through multiple lifting guide rods. The lower side of the lifting plate is fixedly connected to the heating block of the upper mold through multiple fixed columns. The lifting cylinder is fixed above the top plate. The driving end of the lifting cylinder is connected to the lifting plate to drive the lifting plate and the upper mold to move along the lifting guide rod.

8. The circuit board hot press with anti-scalding protection structure according to claim 7, characterized in that: The working table of the frame is provided with a plurality of positioning blocks, and the positioning fixture is clamped between the plurality of positioning blocks.

9. The circuit board hot press with anti-scalding protection structure according to claim 8, characterized in that: A storage table is extended outward from one side of the workbench, and the storage table is used to place circuit boards and plastic parts. The positioning fixture is sunken and has positioning grooves for placing circuit boards and plastic parts. Loading and unloading operations of circuit boards and plastic parts are carried out between the positioning grooves and the storage table.

10. The circuit board hot press with anti-scalding protection structure according to claim 9, characterized in that: The storage table is vertically provided with a connecting plate, and the connecting plate is fixed to the frame.

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