Printed circuit board alignment device and method

Abstract

The invention relates to the technical field of printed circuit boards, in particular to a printed circuit board alignment device and method.The printed circuit board alignment device comprises a base, a working cover is fixedly arranged at the top of the base, a hydraulic cylinder is fixedly inserted into the top of the working cover, the extending end of the hydraulic cylinder is fixedly connected with an upper template, and a positioning mechanism used for fixing a copper foil is arranged on one side of the upper template; a leveling mechanism for straightening the copper foil is arranged on the other side of the upper template; one end of a copper foil on a flat plate is pressed and fixed through a second rubber strip, the extension end of a first air cylinder is controlled to extend, a turnover frame is turned over, then the extension end of a second air cylinder is controlled to extend, and a pressing wheel provides thrust to the end, away from the first rubber strip, of a rotating rod, so that the rotating rod rotates; and the copper foil is straightened and leveled through cooperation of the second rubber strip and the first rubber strip, so that flatness of the copper foil is guaranteed, and the condition of wrinkles is prevented.

Description

Technical Field

[0001] The invention relates to the technical field of printed circuit boards, and in particular to a printed circuit board alignment device and method. Background Art

[0002] Printed circuit boards are providers of electrical connections for electronic components, and their alignment devices play a vital role in the production process of circuit boards. They are made using electronic printing technology and consist of an insulating base plate, connecting wires, and pads for assembling and welding electronic components. They have the dual functions of a conductive circuit and an insulating base plate. Printed circuit boards can replace complex wiring and realize electrical connections between components in the circuit, thereby simplifying the assembly and welding of electronic products and reducing the wiring workload.

[0003] However, before lamination, the existing circuit boards need to stack multiple substrates, among which the top substrate is copper foil. When the copper foil is covered on other substrates, wrinkles are likely to occur, which will affect the efficiency of subsequent lamination. At the same time, before the upper template is laminarized, it itself needs to be preheated, and the preheating operation is completed by the heating element inside the upper template. Preheating only by the heating element is prone to temperature fluctuations, and it is difficult to heat the upper template to the set temperature evenly and quickly, affecting the working efficiency of the upper template. Summary of the invention

[0004] The technical problems solved by this solution are:

[0005] (1) How to solve the problem that copper foil is prone to wrinkles when covered on other substrates, which will affect the subsequent lamination efficiency;

[0006] (2) How to solve the problem that temperature fluctuations are prone to occur when preheating only through heating elements, making it difficult to evenly and quickly heat the upper template to the set temperature, thereby affecting the working efficiency of the upper template.

[0007] The object of the present invention can be achieved by the following technical scheme: a printed circuit board alignment device, comprising a base, a working cover is fixedly arranged on the top of the base, a hydraulic cylinder is fixedly inserted on the top of the working cover, the hydraulic cylinder is longitudinally arranged, and the extended end of the hydraulic cylinder is fixedly connected to an upper template, a positioning mechanism for fixing copper foil is arranged on one side of the upper template, and a leveling mechanism for straightening the copper foil is arranged on the other side of the upper template;

[0008] The leveling mechanism includes a first cylinder fixedly mounted on the inner wall of the working cover, the first cylinder is longitudinally arranged, and a roller is rotatably arranged on the protruding end of the first cylinder, a turning frame is rotatably arranged on the inner wall of the working cover, the middle part of the turning frame is rollingly connected to the roller, and the roller is located below the turning frame.

[0009] A further technical improvement of the present invention is that one end of the flip frame is rotatably connected to a rotating rod, one end of the rotating rod is fixedly mounted with a first rubber strip, and the position of the first rubber strip corresponds to the position of the upper template.

[0010] A further technical improvement of the present invention is that: a second cylinder is fixedly installed on the flip frame through a connecting seat, and a pressing wheel is rotatably connected to the extended end of the second cylinder, and the pressing wheel is rollingly connected to the middle part of the rotating rod away from the first rubber strip, and the connecting seat is fixedly connected to one end of the rotating rod away from the first rubber strip through a tension spring; in the process of the extended end of the hydraulic cylinder being retracted to the shortest, the transmission rod is flipped to provide a downward pressing force to the first lever, so that the lifting rod descends and drives the positioning frame to flip, and one end of the copper foil on the flat plate is pressed and fixed by the second rubber strip, and then the extended end of the first cylinder is controlled to extend, and due to the influence of gravity, the flip frame flips. The roller is connected to the middle part of the flip frame in a rolling manner. When the first rubber strip contacts the other end of the copper foil, the roller is separated from the flip frame, and then the extended end of the second cylinder is controlled to extend. The pressing wheel provides a thrust to the end of the rotating rod away from the first rubber strip, so that the rotating rod rotates. The copper foil is straightened and flattened by the second rubber strip in cooperation with the first rubber strip to ensure the flatness of the copper foil and prevent wrinkles. Before the extended end of the first cylinder extends, the hot air flow blown out from the two output ends of the U-shaped tube cooperates with the heat emitted by the template itself to heat the first rubber strip on one side thereof to make it soft, thereby effectively improving the efficiency of the first rubber strip in straightening and flattening the copper foil.

[0011] A further technical improvement of the present invention is that the positioning mechanism includes two guide frames fixedly connected to the working cover, a longitudinally arranged lifting rod is movably inserted between the two guide frames, a first lever is fixedly installed in the middle of the lifting rod, and a heating unit for increasing the temperature inside the working cover is arranged on one side of the lifting rod.

[0012] A further technical improvement of the present invention is that a positioning frame is rotatably provided on the inner wall of the working cover, a second rubber strip is fixedly installed on one end of the positioning frame, and the bottom end of the lifting rod is movably connected to the middle part of the positioning frame.

[0013] A further technical improvement of the present invention is that a baffle is fixedly mounted on the lifting rod below the first shifting rod, and a thrust spring is elastically arranged between the baffle and the guide frame below.

[0014] A further technical improvement of the present invention is that a transmission rod is rotatably arranged on the working cover between the hydraulic cylinder and the lifting rod, a second shifting rod is fixedly installed on the protruding end of the hydraulic cylinder, the second shifting rod is slidably connected to one end of the transmission rod, and the first shifting rod is slidably connected to the other end of the transmission rod.

[0015] A further technical improvement of the present invention is that: the heating unit includes a U-shaped tube, the middle part of the U-shaped tube is connected to an L-shaped tube, the middle part of the L-shaped tube is connected to an air outlet pipe, and the air outlet pipe is located in the working hood; by controlling the extended end of the hydraulic cylinder to shrink from half the length to the shortest, the upper template is raised, and the heating element inside the upper template is turned on to preheat the upper template itself. At this time, the two sealing plugs are respectively separated from the two output ends of the U-shaped tube, and cooperate with the second lever to drive the transmission rod to flip, pushing the top rod to rise, so that the blocking block blocks the output end of the air outlet pipe, and the hot air flow entering the L-shaped tube will be injected into the U-shaped tube and blown out through the two output ends of the U-shaped tube. The hot air flow will increase the temperature around the upper template and perform auxiliary preheating on the outer surface of the upper template, so that the upper template can be heated while ensuring uniform heating, avoiding temperature fluctuations and affecting the working efficiency of the upper template.

[0016] A working method of a printed circuit board alignment device, the working method specifically comprising the following steps:

[0017] Step 1: Open the working hood, place various substrates on the flat plate in sequence, close the working hood and then turn on the hot air blower. At this time, the two sealing plugs block the two output ends of the U-shaped tube respectively, so that the hot air flow is blown out along the L-shaped tube and the air outlet pipe, and the air in the working hood is squeezed out through the exhaust hole, thereby effectively increasing the temperature in the working hood and ensuring the heating speed during the subsequent upper template preheating;

[0018] Step 2: Then control the extended end of the hydraulic cylinder to shrink from half the length to the shortest, so that the upper template rises, and turn on the heating element inside the upper template to preheat the upper template itself. At this time, the two sealing plugs are separated from the two output ends of the U-shaped tube respectively, and the second lever drives the transmission rod to flip, pushing the push rod to rise, so that the blocking block blocks the output end of the outlet pipe, and the hot air flow entering the L-shaped tube will be injected into the U-shaped tube and blown out through the two output ends of the U-shaped tube. The hot air flow will increase the temperature around the upper template and assist in preheating the outer surface of the upper template, so that the upper template can be heated evenly while being heated, avoiding temperature fluctuations and affecting the working efficiency of the upper template;

[0019] Step 3: When the extended end of the hydraulic cylinder is retracted to the shortest, the transmission rod is flipped to provide downward pressure to the first lever, so that the lifting rod descends to drive the positioning frame to flip, and the second rubber strip is used to press and fix one end of the copper foil on the flat plate, and then the extended end of the first cylinder is controlled to extend. Due to the influence of gravity, the flip frame flips, and the roller is connected to the middle of the flip frame by rolling. When the first rubber strip contacts the other end of the copper foil, the roller is separated from the flip frame, and then the extended end of the second cylinder is controlled to extend, and the pressing wheel provides thrust to the end of the rotating rod away from the first rubber strip, so that the rotating rod rotates, and the copper foil is straightened and flattened by the second rubber strip in cooperation with the first rubber strip to ensure the flatness of the copper foil and prevent wrinkles. Before the extended end of the first cylinder is extended, the hot air flow blown out from the two output ends of the U-shaped tube cooperates with the heat emitted by the template itself to heat the first rubber strip on one side thereof to make it soft, thereby effectively improving the efficiency of the first rubber strip in straightening and flattening the copper foil.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] When the present invention is in use, the transmission rod is flipped to provide a downward pressing force to the first lever, so that the lifting rod descends and drives the positioning frame to flip, and one end of the copper foil on the flat plate is pressed and fixed by the second rubber strip, and then the extended end of the first cylinder is controlled to extend. Due to the influence of gravity, the flip frame is flipped, and the roller is rollingly connected with the middle part of the flip frame. When the first rubber strip contacts the other end of the copper foil, the roller is separated from the flip frame, and then the extended end of the second cylinder is controlled to extend, and the pressing wheel provides a thrust to the end of the rotating rod away from the first rubber strip, so that the rotating rod rotates, and the copper foil is straightened and flattened by the second rubber strip in cooperation with the first rubber strip, so as to ensure the flatness of the copper foil and prevent wrinkles. Before the extended end of the first cylinder is extended, the hot air flow blown out from the two output ends of the U-shaped tube cooperates with the heat emitted by the template itself to heat the first rubber strip located on one side thereof to make it soft, thereby effectively improving the efficiency of the first rubber strip in straightening and flattening the copper foil.

[0022] When the present invention is in use, the extended end of the hydraulic cylinder is controlled to shrink from half its length to the shortest, so that the upper template rises, and the heating element inside the upper template is turned on to preheat the upper template itself. At this time, the two sealing plugs are respectively separated from the two output ends of the U-shaped tube, and the second lever is cooperated to drive the transmission rod to flip, pushing the top rod to rise, so that the blocking block blocks the output end of the outlet pipe, and the hot air flow entering the L-shaped tube will be injected into the U-shaped tube and blown out through the two output ends of the U-shaped tube. The hot air flow will increase the temperature around the upper template and perform auxiliary preheating on the outer surface of the upper template, so that the upper template can be heated evenly while being heated, avoiding temperature fluctuations and affecting the working efficiency of the upper template. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0024] Figure 1 It is a three-dimensional schematic diagram of the overall back structure of the present invention;

[0025] Figure 2 It is a schematic cross-sectional view of the overall structure of the present invention;

[0026] Figure 3 It is a schematic diagram of the structure of the leveling mechanism of the present invention;

[0027] Figure 4 It is a three-dimensional schematic diagram of the local structure of the leveling mechanism of the present invention;

[0028] Figure 5 It is a schematic diagram of the positioning mechanism structure of the present invention;

[0029] Figure 6 This is a schematic diagram of the structure of the heating unit of the present invention;

[0030] Figure 7 For the present invention Figure 2 A schematic diagram of the enlarged structure in the middle.

[0031] In the figure: 1. hydraulic cylinder; 2. L-shaped pipe; 3. base; 4. exhaust hole; 5. working cover; 6. hot air blower; 7. leveling mechanism; 8. plate; 9. positioning mechanism; 10. upper template; 11. support frame; 12. sealing plug; 71. connecting seat; 72. second cylinder; 73. turning frame; 74. roller; 75. first rubber strip; 76. rotating rod; 77. first cylinder; 91. heating unit; 92. transmission rod; 93. second lever; 94. second rubber strip; 95. positioning frame; 96. guide frame; 97. baffle; 98. first lever; 99. lifting rod; 911. outlet pipe; 912. shielding block; 913. guide sleeve; 914. push rod; 915. U-shaped pipe. DETAILED DESCRIPTION

[0032] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments 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 creative work are within the scope of protection of the present invention.

[0033] See also Figure 1-Figure 7As shown, a printed circuit board alignment device includes a base 3, a working cover 5 is fixedly arranged on the top of the base 3, a hydraulic cylinder 1 is fixedly inserted on the top of the working cover 5, the hydraulic cylinder 1 is longitudinally arranged, and the protruding end of the hydraulic cylinder 1 is fixedly connected to an upper template 10, a positioning mechanism 9 for fixing copper foil is arranged on one side of the upper template 10, and a leveling mechanism 7 for straightening the copper foil is arranged on the other side of the upper template 10.

[0034] See also Figure 2 and Figure 3 As shown, the above-mentioned leveling mechanism 7 includes a first cylinder 77 fixedly mounted on the inner wall of the working cover 5, the first cylinder 77 is longitudinally arranged, and a roller 74 is rotatably arranged on the protruding end of the first cylinder 77, and a flip frame 73 is rotatably arranged on the inner wall of the working cover 5, the middle part of the flip frame 73 is rollingly connected with the roller 74, and the roller 74 is located below the flip frame 73.

[0035] See also Figure 3 and Figure 4 As shown, one end of the above-mentioned flip frame 73 is rotatably connected to a rotating rod 76 , and one end of the rotating rod 76 is fixedly installed with a first rubber strip 75 , and the position of the first rubber strip 75 corresponds to the position of the upper template 10 .

[0036] See also Figure 2-Figure 4 As shown, the second cylinder 72 is fixedly installed on the above-mentioned flip frame 73 through the connecting seat 71, and the protruding end of the second cylinder 72 is rotatably connected to the pressing wheel, and the pressing wheel is rollingly connected to the middle part of the rotating rod 76 away from the first rubber strip 75, and the connecting seat 71 is fixedly connected to one end of the rotating rod 76 away from the first rubber strip 75 through a tension spring; in the process of the protruding end of the hydraulic cylinder 1 being retracted to the shortest, the transmission rod 92 is turned to provide a downward force to the first lever 98, so that the lifting rod 99 descends to drive the positioning frame 95 to flip, and the second rubber strip 94 is used to press and fix one end of the copper foil on the flat plate 8, and then the protruding end of the first cylinder 77 is controlled to extend, and due to the influence of gravity, the flip frame 73 is flipped, and the roller 74 and the flip frame 73 are turned over. The middle part of the rack 73 is rollingly connected. When the first rubber strip 75 contacts the other end of the copper foil, the roller 74 separates from the flip rack 73, and then controls the extended end of the second cylinder 72 to extend. The pressing wheel provides a thrust to the end of the rotating rod 76 away from the first rubber strip 75, so that the rotating rod 76 rotates, and the second rubber strip 94 cooperates with the first rubber strip 75 to straighten and flatten the copper foil, so as to ensure the flatness of the copper foil and prevent wrinkles. Before the extended end of the first cylinder 77 extends, the hot air flow blown out from the two output ends of the U-shaped tube 915 cooperates with the heat emitted by the template 10 itself to heat the first rubber strip 75 located on one side thereof to make it soft, thereby effectively improving the efficiency of the first rubber strip 75 in straightening and flattening the copper foil.

[0037] See also Figure 2 and Figure 5 As shown, the above-mentioned positioning mechanism 9 includes two guide frames 96 fixedly connected to the working cover 5, and a longitudinally arranged lifting rod 99 is movably inserted between the two guide frames 96. A first lever 98 is fixedly installed in the middle of the lifting rod 99, and a heating unit 91 for increasing the temperature inside the working cover 5 is arranged on one side of the lifting rod 99.

[0038] See also Figure 5 As shown, a positioning frame 95 is rotatably provided on the inner wall of the working cover 5 , a second rubber strip 94 is fixedly installed on one end of the positioning frame 95 , and the bottom end of the lifting rod 99 is movably connected to the middle of the positioning frame 95 .

[0039] See also Figure 5 As shown, a baffle plate 97 is fixedly mounted on the lifting rod 99 below the first shifting rod 98 , and a thrust spring is elastically arranged between the baffle plate 97 and the guide frame 96 below.

[0040] See also Figure 2 and Figure 5 As shown, a transmission rod 92 is rotatably provided on the working cover 5 between the hydraulic cylinder 1 and the lifting rod 99, a second shift rod 93 is fixedly installed on the protruding end of the hydraulic cylinder 1, the second shift rod 93 is slidably connected to one end of the transmission rod 92, and the first shift rod 98 is slidably connected to the other end of the transmission rod 92.

[0041] See also Figure 5 and Figure 6 As shown, the above-mentioned heating unit 91 includes a U-shaped tube 915, the middle part of the U-shaped tube 915 is connected to an L-shaped tube 2, the middle part of the L-shaped tube 2 is connected to an air outlet pipe 911, and the air outlet pipe 911 is located in the working cover 5; by controlling the extended end of the hydraulic cylinder 1 to shrink from half the length to the shortest, the upper template 10 is raised, and the heating element inside the upper template 10 is turned on to preheat the upper template 10 itself. At this time, the two sealing plugs 12 are separated from the two output ends of the U-shaped tube 915 respectively, and the second lever 93 drives the transmission rod 92 to flip, pushing the push rod 914 to rise, so that the blocking block 912 blocks the output end of the air outlet pipe 911, and the hot air flow entering the L-shaped tube 2 will be injected into the U-shaped tube 915 and blown out through the two output ends of the U-shaped tube 915. The hot air flow will increase the temperature around the upper template 10, and the outer surface of the upper template 10 is auxiliary preheated, so that the upper template 10 is heated while ensuring uniform heating, avoiding temperature fluctuations, and avoiding affecting the working efficiency of the upper template 10.

[0042] See also Figure 6As shown, a push rod 914 is arranged above the above-mentioned transmission rod 92, and a blocking block 912 for blocking the output end of the air outlet pipe 911 is fixedly installed on the top of the push rod 914. The bottom end of the push rod 914 is rollingly connected to the middle part of the transmission rod 92 near the second lever 93 through a transmission wheel, and two guide sleeves 913 for guiding the push rod 914 are also fixedly installed on the inner wall of the working cover 5.

[0043] See also Figure 2 and Figure 6 As shown, a hot air blower 6 is fixedly arranged on the top of the working cover 5 , and the output end of the hot air blower 6 is connected to the input end of the L-shaped tube 2 .

[0044] See also Figure 2 and Figure 7 As shown, both sides of the top of the upper template 10 are fixedly connected with support frames 11, and sealing plugs 12 are fixedly installed on the support frames 11. The positions of the two sealing plugs 12 correspond to the two output ends of the U-shaped tube 915 respectively.

[0045] See also Figure 2 As shown, a flat plate 8 for placing the substrate is fixedly disposed on the top of the base 3 , and the position of the flat plate 8 corresponds to the position of the upper template 10 .

[0046] See also Figure 1 and Figure 2 As shown, an exhaust hole 4 is provided on the back of the working cover 5 .

[0047] A working method of a printed circuit board alignment device, the working method specifically comprising the following steps:

[0048] Step 1: If Figure 1 and Figure 2 As shown, the working cover 5 is opened, and various substrates are placed on the flat plate 8 in sequence and accurately, and the working cover 5 is closed and then the hot air blower 6 is turned on, as shown in FIG. Figure 2 , Figure 5 and Figure 7 As shown, at this time, the two sealing plugs 12 respectively block the two output ends of the U-shaped tube 915, so that the hot air flow is blown out along the L-shaped tube 2 and the air outlet pipe 911, and the air in the working cover 5 is squeezed out through the exhaust hole 4, thereby effectively increasing the temperature in the working cover 5 and ensuring the heating speed when the upper template 10 is preheated later;

[0049] Step 2: If Figure 5-Figure 7As shown, the extended end of the hydraulic cylinder 1 is controlled to shrink from half the length to the shortest, so that the upper template 10 rises, and the heating element inside the upper template 10 is turned on to preheat the upper template 10 itself. At this time, the two sealing plugs 12 are separated from the two output ends of the U-shaped tube 915 respectively, and the second lever 93 is cooperated to drive the transmission rod 92 to flip, and the push rod 914 is pushed up, so that the blocking block 912 blocks the output end of the outlet pipe 911, and the hot air flow entering the L-shaped tube 2 will be injected into the U-shaped tube 915, as shown in FIG. Figure 2 and Figure 6 As shown, the hot air flow is blown out through the two output ends of the U-shaped tube 915 to increase the temperature around the upper template 10, and to assist in preheating the outer surface of the upper template 10, so that the upper template 10 is heated while ensuring uniform heating, avoiding temperature fluctuations and affecting the working efficiency of the upper template 10;

[0050] Step 3: If Figure 2-Figure 4 As shown in FIG. 1 , during the process of the extension end of the hydraulic cylinder 1 being retracted to the shortest position, the transmission rod 92 is turned over to provide downward pressure to the first lever 98, so that the lifting rod 99 is lowered to drive the positioning frame 95 to turn over, and the second rubber strip 94 is used to press and fix one end of the copper foil on the flat plate 8, and then the extension end of the first cylinder 77 is controlled to extend, as shown in FIG. Figure 3 and Figure 4 As shown, due to the influence of gravity, the overturning frame 73 overturns, and the roller 74 is connected to the middle of the overturning frame 73 in a rolling manner. When the first rubber strip 75 contacts the other end of the copper foil, the roller 74 separates from the overturning frame 73, and then the extended end of the second cylinder 72 is controlled to extend, and the pressing wheel provides a thrust to the end of the rotating rod 76 away from the first rubber strip 75, so that the rotating rod 76 rotates. Figure 2 and Figure 3 As shown, the copper foil is straightened and leveled by the second rubber strip 94 in cooperation with the first rubber strip 75 to ensure the flatness of the copper foil and prevent wrinkles. Figure 2 and Figure 7 As shown, before the extended end of the first cylinder 77 extends, the hot air flow blown out through the two output ends of the U-shaped tube 915 cooperates with the heat emitted by the template 10 itself to heat the first rubber strip 75 located on one side thereof, making it soft, thereby effectively improving the efficiency of the first rubber strip 75 in straightening and flattening the copper foil.

[0051] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A printed circuit board alignment device, comprising a base (3), a working cover (5) fixedly arranged on the top of the base (3), a hydraulic cylinder (1) fixedly inserted on the top of the working cover (5), characterized in that: The extended end of the hydraulic cylinder (1) is fixedly connected to an upper template (10), one side of the upper template (10) is provided with a positioning mechanism (9) for fixing the copper foil, and the other side of the upper template (10) is provided with a leveling mechanism (7) for straightening the copper foil; The leveling mechanism (7) comprises a first cylinder (77) fixedly mounted on the working cover (5); a roller (74) is rotatably arranged at the protruding end of the first cylinder (77); a turning frame (73) is rotatably arranged on the inner side wall of the working cover (5); the middle part of the turning frame (73) is rollingly connected to the roller (74); and the roller (74) is located below the turning frame (73).

2. A printed circuit board alignment device according to claim 1, characterized in that: One end of the turning frame (73) is rotatably connected to a rotating rod (76), and one end of the rotating rod (76) is fixedly mounted with a first rubber strip (75), wherein the position of the first rubber strip (75) corresponds to the position of the upper template (10).

3. A printed circuit board alignment device according to claim 1, characterized in that: A second cylinder (72) is fixedly mounted on the flip frame (73) via a connecting seat (71); a protruding end of the second cylinder (72) is rotatably connected to a pressing wheel; the pressing wheel is rollingly connected to a middle portion of a rotating rod (76) away from the first rubber strip (75); and the connecting seat (71) is fixedly connected to an end of the rotating rod (76) away from the first rubber strip (75) via a tension spring.

4. A printed circuit board alignment device according to claim 1, characterized in that: The positioning mechanism (9) comprises two guide frames (96) fixedly connected to the working cover (5), a lifting rod (99) is movably inserted between the two guide frames (96), a first shifting rod (98) is fixedly installed in the middle of the lifting rod (99), and a heating unit (91) for increasing the temperature inside the working cover (5) is arranged on one side of the lifting rod (99).

5. A printed circuit board alignment device according to claim 4, characterized in that: A positioning frame (95) is rotatably provided on the inner wall of the working cover (5), a second rubber strip (94) is fixedly mounted on one end of the positioning frame (95), and the bottom end of the lifting rod (99) is movably connected to the middle of the positioning frame (95).

6. A printed circuit board alignment device according to claim 4, characterized in that: A baffle (97) is fixedly mounted on the lifting rod (99) below the first shifting rod (98), and a thrust spring is elastically arranged between the baffle (97) and the guide frame (96) below.

7. A printed circuit board alignment device according to claim 4, characterized in that: A transmission rod (92) is rotatably arranged on the working cover (5) between the hydraulic cylinder (1) and the lifting rod (99); a second shifting rod (93) is fixedly mounted on the protruding end of the hydraulic cylinder (1); the second shifting rod (93) is slidably connected to one end of the transmission rod (92); and the first shifting rod (98) is slidably connected to the other end of the transmission rod (92).

8. A printed circuit board alignment device according to claim 4, characterized in that: The heating unit (91) comprises a U-shaped tube (915), the middle of the U-shaped tube (915) is connected to an L-shaped tube (2), the middle of the L-shaped tube (2) is connected to an air outlet pipe (911), and the air outlet pipe (911) is located in the working cover (5).

9. A working method of a printed circuit board alignment device according to any one of claims 1 to 8, characterized in that: The working method specifically comprises the following steps: Step 1: Open the working cover (5), place the various substrates on the flat plate (8) in sequence and accurately, close the working cover (5), and then turn on the hot air blower (6). At this time, the two sealing plugs (12) respectively block the two output ends of the U-shaped tube (915), so that the hot air flow is blown out along the L-shaped tube (2) and the air outlet pipe (911), and the air in the working cover (5) is squeezed out through the exhaust hole (4); Step 2: Then control the extended end of the hydraulic cylinder (1) to shrink from half the length to the shortest, so that the upper template (10) rises, and turn on the heating element inside the upper template (10) to preheat the upper template (10) itself. At this time, the two sealing plugs (12) are separated from the two output ends of the U-shaped tube (915) respectively, and cooperate with the second lever (93) to drive the transmission rod (92) to flip, pushing the push rod (914) to rise, so that the blocking block (912) blocks the output end of the outlet pipe (911), and the hot air flow entering the L-shaped tube (2) will be injected into the U-shaped tube (915) and blown out through the two output ends of the U-shaped tube (915). The hot air flow will increase the temperature around the upper template (10) and perform auxiliary preheating on the outer surface of the upper template (10); Step 3: When the extended end of the hydraulic cylinder (1) is retracted to the shortest point, the transmission rod (92) is turned to provide downward pressure to the first lever (98), so that the lifting rod (99) is lowered to drive the positioning frame (95) to turn over, and the second rubber strip (94) is used to press and fix one end of the copper foil on the flat plate (8), and then the extended end of the first cylinder (77) is controlled to extend. Due to the influence of gravity, the turning frame (73) turns over, and the roller (74) is connected to the middle part of the turning frame (73) in a rolling manner. When the first rubber strip (75) contacts the other end of the copper foil, the roller (74) is separated from the turning frame (73), and then the extended end of the second cylinder (72) is controlled to extend, and the pressing wheel provides a thrust to the end of the rotating rod (76) away from the first rubber strip (75), so that the rotating rod (76) rotates, and the copper foil is straightened and flattened by the second rubber strip (94) in cooperation with the first rubber strip (75). Before the extended end of the first cylinder (77) is extended, the hot air flow blown out from the two output ends of the U-shaped tube (915) cooperates with the heat emitted by the template (10) itself to heat the first rubber strip (75) located on one side thereof to make it soft.

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