Jack device for printed circuit boards

Abstract

The application provides a jack device for printed circuit board and relates to the technical field of printed circuit board processing equipment. The technical problem of low efficiency in the prior art for the jack processing of the through hole of the printed circuit board is solved. The technical solution is that the jack device for printed circuit board comprises a vacuum chamber, the upper part of the vacuum chamber is communicated with a vacuum pump through an exhaust pipe, the top of the vacuum chamber is provided with a taking and placing opening and a cover plate, a piston plate is arranged in the vacuum chamber, a pushing mechanism is arranged on the left side of the vacuum chamber, a chute extends to a curing chamber, the curing chamber is provided with a curing lamp, a liquid storage tank is arranged between the vacuum chamber and the curing chamber, the liquid storage tank is arranged below the chute, the vacuum chamber is communicated with the liquid storage tank through a liquid suction pipe, and the liquid suction pipe is provided with a second valve. The application can simultaneously perform the jack processing on all through holes of batch printed circuit boards, and is beneficial to improving the production and processing efficiency of the printed circuit board.

Description

TECHNICAL FIELD

[0001] The present application relates to printed circuit board processing equipment technical field, specifically to the hole device of printed circuit board. BACKGROUND

[0002] Printed circuit board, also known as printed wiring board, is an important electronic component, is the support of electronic components, is the carrier of electrical interconnection of electronic components. Among them, the via is an important basic element of printed circuit board, which is used to realize the electrical connection of different circuit layers. When processing the via, a through channel is generally formed by mechanical drilling or laser processing first, and then the channel wall is metallized. In addition, high-quality printed circuit boards also need to be plugged into the via. For printed circuit boards with a large number of vias and high density, how to realize batch plugging of vias to improve production and processing efficiency is a technical problem to be solved in the field. SUMMARY

[0003] The purpose of the present application is to provide a hole device for printed circuit board, which can realize batch plugging of vias and improve the production and processing efficiency of printed circuit board.

[0004] To achieve the above purpose, the technical scheme adopted by the present application is:

[0005] The hole device for printed circuit board comprises: a vacuum chamber; the upper part of the vacuum chamber is communicated with a vacuum pump through an exhaust pipe, and the exhaust pipe is provided with a first valve; the top of the vacuum chamber has a taking and placing opening, and a cover plate is arranged; a piston plate is arranged in the vacuum chamber, and a power system for driving the piston plate to move up and down is adapted; a pushing mechanism is arranged on the left side of the vacuum chamber to push the printed circuit board that comes out of the taking and placing opening into a chute on the right side of the vacuum chamber; the chute extends to the right into a curing chamber, and a curing lamp is arranged in the curing chamber; a liquid storage tank is arranged between the vacuum chamber and the curing chamber, and the liquid storage tank is located below the chute; the vacuum chamber is communicated with the liquid storage tank through a liquid suction pipe, and the liquid suction pipe is provided with a second valve.

[0006] Optionally, the vacuum chamber is provided with liquid blocking edges extending along the left and right directions on the top, so as to form a guide groove between the two liquid blocking edges; the groove bottom of the guide groove is flush with the groove bottom of the chute.

[0007] Optionally, the chute is adapted to be driven by a first power source to move left and right, so that the left end of the chute is attached to or separated from the right outer wall of the vacuum chamber; a release film is laid in the chute; a film unwinding machine for unwinding the release film is arranged at the bottom of the left segment of the chute, and a film winding machine for winding the release film is arranged at the bottom of the right segment of the chute.

[0008] Optionally, the chute is provided with an opening at the left end of the groove wall; the chute is provided with a first mounting groove extending in the front-rear direction at the right side of the opening, and a first lower elastic strip is mounted; the chute is provided with a first ridge extending in the front-rear direction above the first lower elastic strip, and the front-rear ends of the first ridge are connected with the front-rear groove walls of the chute respectively; the bottom of the first ridge is provided with a first upper elastic strip; the first upper elastic strip and the first lower elastic strip form a first extrusion channel for the printed circuit board to pass through.

[0009] Optionally, the pushing mechanism comprises a horizontally arranged pushing plate and a second power source for driving the pushing plate to move left and right; the vacuum chamber is provided with a second mounting groove extending in the front-rear direction at the left end of the guide groove, and a second lower elastic strip is mounted; the vacuum chamber is provided with a second ridge extending in the front-rear direction above the second lower elastic strip, and the front-rear ends of the second ridge are connected with the liquid blocking ridge respectively; the bottom of the second ridge is provided with a second upper elastic strip, and the second upper elastic strip and the second lower elastic strip form a second extrusion channel for the pushing plate to pass through.

[0010] Optionally, the liquid blocking ridge is provided with a guide portion inside the right section; the guide portion has a guide slope surface for guiding the printed circuit board to slide into the chute.

[0011] Optionally, the power system comprises a liquid inlet pipe connecting the bottom of the vacuum chamber and the lower part of the liquid storage pool, a third valve and a delivery pump mounted on the liquid inlet pipe, a liquid outlet pipe connecting the bottom of the vacuum chamber and the upper part of the liquid storage pool, and a fourth valve mounted on the liquid outlet pipe; the inlet of the delivery pump corresponds to the liquid storage pool, and the outlet corresponds to the vacuum chamber.

[0012] Optionally, the top of the piston plate is provided with a carrier plate, and the carrier plate is provided with a plurality of through holes penetrating up and down; the carrier plate is uniformly provided with a plurality of downward extending supporting legs around the periphery, and the vacuum chamber is provided with supporting portions corresponding to the supporting legs at the bottom of the inner wall; the periphery of the piston plate is correspondingly provided with notches for cooperating with the supporting legs or the supporting portions; when the piston plate falls on the bottom of the vacuum chamber and the supporting legs of the carrier plate fall on the supporting portions of the vacuum chamber, the interval between the piston plate and the carrier plate forms a liquid inlet cavity; the liquid suction pipe is connected to the liquid inlet cavity.

[0013] Optionally, the upper surface of the piston plate is provided with a plurality of upward extending convex columns, and the convex columns correspond to the through holes one by one; when the piston plate falls on the bottom of the vacuum chamber and the supporting legs of the carrier plate fall on the supporting portions of the vacuum chamber, the top of the convex column is lower than the lower surface of the carrier plate; when the upper surface of the piston plate is attached to the lower surface of the carrier plate, the convex columns fill the through holes.

[0014] Optionally, the liquid blocking rib is provided with an upward extending stand at both left and right ends, and a cantilever is provided at the upper end of the stand; the cantilever is provided with a locking device; the locking device comprises a sleeve with a flange at the upper end, a pressing member arranged in the sleeve, and a locking bolt arranged at the top of the pressing member; the upper section of the sleeve is provided with an internal thread matched with the locking bolt; the upper end of the pressing member is provided with a cap; the lower end of the sleeve is provided with an annular limiting portion to prevent the cap of the pressing member from being taken out from the lower end of the sleeve; a first compression spring is arranged between the cap and the limiting portion; the lower end of the pressing member is taken out from the lower end of the sleeve to press against the cover plate; a plurality of grooves are uniformly arranged around the top of the vacuum chamber, and a second compression spring for lifting the cover plate is arranged in the groove; the cantilever and the liquid blocking rib are provided with a space greater than the thickness of the cover plate to take and place the cover plate; and the lower surface of the cover plate is provided with an elastic sealing layer.

[0015] The working principle of the present application is as follows: a plurality of printed circuit boards are placed into the vacuum chamber, and the cover plate is closed; the first valve is opened, and the vacuum pump is started to exhaust the air in the vacuum chamber. The first valve is closed, and the second valve is opened, so that the photocuring resin in the liquid storage tank is sucked into the vacuum chamber under the action of atmospheric pressure and filled into each through hole of the printed circuit board. The cover plate is opened, and the power system drives the piston plate to move upward, so that the printed circuit boards in the vacuum chamber are sequentially taken out from the taking and placing opening; and the printed circuit boards taken out from the taking and placing opening are sequentially pushed into the chute on the right side of the vacuum chamber through the pushing mechanism. When the printed circuit boards slide into the curing chamber along the chute, the photocuring resin in the through hole is cured under the irradiation of the curing lamp; and thus, the hole plugging processing of the through hole is completed.

[0016] Therefore, the present application has the beneficial effects that the hole plugging processing of all through holes of the batch printed circuit boards is completed, and the production and processing efficiency of the printed circuit boards is improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort.

[0018] Figure 1 The figure is a structural schematic diagram of the present application;

[0019] Figure 2 The figure is a distribution schematic diagram of the vacuum chamber, the chute and the liquid storage tank;

[0020] Figure 3 The figure is a distribution schematic diagram of the vacuum chamber, the curing chamber and the liquid storage tank;

[0021] Figure 4Schematic diagram of the piston plate falling to the bottom of the vacuum chamber;

[0022] Figure 5 Schematic diagram of the printed circuit board moving along the sliding groove to the right;

[0023] Figure 6 Schematic diagram of the sliding groove being equipped with the first rib;

[0024] Figure 7 Schematic diagram of the sliding groove being provided with the opening at the left end of the groove wall;

[0025] Figure 8 Schematic diagram of the liquid inlet pipe of the present application;

[0026] Figure 9 Schematic diagram of the liquid outlet pipe of the present application;

[0027] Figure 10 Schematic diagram of the carrier plate being provided in the vacuum chamber;

[0028] Figure 11 Schematic diagram of the assembly of the vacuum chamber, the piston plate and the carrier plate;

[0029] Figure 12 Schematic diagram of the Figure 10 from the top;

[0030] Figure 13 Schematic diagram of the A-A section of the Figure 12 ;

[0031] Figure 14 Schematic diagram of the assembly of the lock;

[0032] Figure 15 Schematic diagram of the limiting part being provided on the sleeve.

[0033] 1, vacuum chamber; 2, exhaust pipe; 3, vacuum pump; 4, first valve; 5, taking and placing opening; 6, cover plate; 7, piston plate; 8, pushing mechanism; 9, chute; 10, curing chamber; 11, liquid storage pool; 12, liquid suction pipe; 13, second valve; 14, liquid blocking edge; 15, second compression spring; 16, first power source; 17, release film; 18, unwinding machine; 19, winding machine; 20, opening; 21, first mounting groove; 22, first lower elastic strip; 23, first edge strip; 24, first upper elastic strip; 25, pushing plate; 26, second power source; 27, second mounting groove; 28, second lower elastic strip; 29, second edge strip; 30, second upper elastic strip; 31, guide slope surface; 32, liquid inlet pipe; 33, third valve; 34, delivery pump; 35, liquid discharge pipe; 36, fourth valve; 37, object carrying plate; 38, supporting leg; 39, supporting part; 40, notch; 41, liquid inlet cavity; 42, protruding column; 43, cantilever; 44, locker; 45, sleeve; 46, abutting member; 47, locking bolt; 48, limiting part; 49, first compression spring; 50, groove. DETAILED DESCRIPTION

[0034] In the following, only certain example embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present application. Therefore, the drawings and the description are considered to be exemplary in nature rather than limiting.

[0035] In the description of the present application, it needs to be understood that the terms "front", "back", "left", "right" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0036] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly and specifically limited.

[0037] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrated; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction relationship of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0038] The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0039] Embodiment 1

[0040] As Figures 1-4 shown, the present application provides a kind of jack device of printed circuit board. The jack device includes: vacuum chamber 1. The upper portion of the vacuum chamber 1 is communicated with vacuum pump 3 by exhaust pipe 2, and the exhaust pipe 2 is provided with first valve 4. The top of the vacuum chamber 1 has access 5, and is provided with cover plate 6. The vacuum chamber 1 is provided with piston plate 7, and is adapted to drive piston plate 7 to move up and down. The left side of the vacuum chamber 1 is provided with pushing mechanism 8, to push the printed circuit board that emerges from access 5 into chute 9 on the right side of the vacuum chamber 1. The chute 9 extends to the right into curing chamber 10, and the curing chamber 10 is provided with curing lamp. Accumulator 11 is provided between the vacuum chamber 1 and the curing chamber 10, and the accumulator 11 is located below the chute 9. It should be understood that the accumulator 11 is used for transfer, temporary storage of light-cured resin; in addition, the accumulator 11 can be communicated with the liquid storage tank through pipeline, and is adapted to infusion pump, to supplement the light-cured resin in the accumulator 11. The vacuum chamber 1 is communicated with the accumulator 11 by suction tube 12, and the suction tube 12 is provided with second valve 13.

[0041] The specific embodiment of the present application is described below: a plurality of printed circuit boards are put into the vacuum chamber 1, and the cover plate 6 is closed. Open the first valve 4, start the vacuum pump 3, and exhaust the air in the vacuum chamber 1. Close the first valve 4, open the second valve 13, and under the action of atmospheric pressure, the light-cured resin in the accumulator 11 will be sucked into the vacuum chamber 1 and filled into each through hole of the printed circuit board. Open the cover plate 6, and let the power system drive the piston plate 7 to move upwards, so that the printed circuit boards in the vacuum chamber 1 emerge one by one from the access 5; that is, the printed circuit boards that emerge one by one from the access 5 can be pushed into the chute 9 on the right side of the vacuum chamber 1 by the pushing mechanism 8. When the printed circuit board slides into the curing chamber 10 along the chute 9, the light-cured resin in the through hole will be cured under the irradiation of the curing lamp. In this way, the jack processing of all through holes of the batch printed circuit boards can be completed, thereby greatly improving the production and processing efficiency of the printed circuit boards.

[0042] Embodiment 2

[0043] As Figure 4 shown in the drawings, on the basis of Embodiment 1, the vacuum chamber 1 is provided with a liquid barrier rib 14 extending along the left-right direction on each of the front and back sides of the top of the vacuum chamber 1, so as to form a guide groove between the two liquid barrier ribs 14; the groove bottom of the guide groove is flush with the groove bottom of the sliding groove 9.

[0044] It should be understood that the groove bottom of the guide groove is flush with the groove bottom of the sliding groove 9 mainly refers to that the part of the top of the vacuum chamber 1 between the taking and placing opening 5 and the sliding groove 9 is flush with the groove bottom of the sliding groove 9.

[0045] Embodiment 3

[0046] As Figure 2 , Figure 4 , Figure 5 , Figure 7 shown in the drawings, on the basis of Embodiment 2, the sliding groove 9 is adapted to the first power source 16 that drives it to move left and right, so that the left end of the sliding groove 9 is attached to or separated from the right outer wall of the vacuum chamber 1; the sliding groove 9 is paved with a release film 17; the sliding groove 9 is provided with an unwinding machine 18 at the bottom of the left section for unwinding the release film 17, and a winding machine 19 at the bottom of the right section for winding the release film 17.

[0047] It should be understood that when the printed circuit board is pushed into the sliding groove 9 by the pushing mechanism 8, the unwinding machine 18 unwinds the release film 17 and the winding machine 19 winds the release film 17, so that the release film 17 moves rightward along the sliding groove 9 synchronously with the printed circuit board; in this way, the release film 17 will be attached to the lower surface of the printed circuit board. For those through-holes with larger diameters, this can effectively prevent the photocuring resin from flowing out of the lower end of the through-hole before curing. When the printed circuit board moves rightward along the sliding groove 9 in the curing chamber 10, the photocuring resin in the through-hole will be cured under the irradiation of the curing lamp. The release film 17 also becomes the power to drive the printed circuit board to move rightward; when the printed circuit board moves with the release film 17 to the right end of the sliding groove 9, the release film 17 is wound by the winding machine 19 and will be separated from the printed circuit board; in this way, the printed circuit board with the through-holes filled can be obtained. The first power source 16 can be a pneumatic cylinder, an electric push rod, a linear motor or other linear driving devices. The left end of the sliding groove 9 is usually attached to the right outer wall of the vacuum chamber 1, and when the printed circuit board slides into the sliding groove 9 from the guide groove, for those through-holes with larger diameters, the photocuring resin can be prevented from flowing out of the lower end of the through-hole. When the release film 17 of the unwinding machine 18 is unwound and a new release film 17 is installed, the left end of the sliding groove 9 can be separated from the right outer wall of the vacuum chamber 1, so that the end of the new release film 17 can be pulled out from between the sliding groove 9 and the vacuum chamber 1, and then pulled through the sliding groove 9 and installed to the winding machine 19.

[0048] Embodiment 4

[0049] As Figures 5-7As shown, based on embodiment 3, the slide groove 9 has an opening 20 at the left end of the groove wall; the slide groove 9 has a first mounting groove 21 extending in the front-back direction on the right side of the opening 20, and a first lower elastic strip 22 is installed thereon; the slide groove 9 has a first rib 23 extending in the front-back direction above the first lower elastic strip 22, and the front and rear ends of the first rib 23 are respectively connected to the front and rear groove walls of the slide groove 9; a first upper elastic strip 24 is installed at the bottom of the first rib 23; a first extrusion channel for the printed circuit board to pass through is formed between the first upper elastic strip 24 and the first lower elastic strip 22.

[0050] It should be understood that when the printed circuit board, pushed by the feeding mechanism 8, passes through the first extrusion channel along with the plastic film, the first upper elastic strip 24, in conjunction with the first lower elastic strip 22, intercepts excess photocurable resin remaining on the upper and lower surfaces of the printed circuit board. This intercepted photocurable resin flows out from the opening 20 in the groove wall at the left end of the chute 9 and into the reservoir 11 below. When the first lower elastic strip 22 is in its naturally extended state, its upper surface is slightly higher than the bottom of the chute 9. Furthermore, a release agent can be coated on the surfaces of the first upper elastic strip 24 and the first lower elastic strip 22.

[0051] Example 5

[0052] like Figure 2 , Figure 3 , Figure 4 , Figure 8 As shown, based on any one of Embodiments 2 to 4, the pushing mechanism 8 includes: a horizontally arranged pushing plate 25 and a second power source 26 that drives the pushing plate 25 to move left and right; the vacuum chamber 1 is provided with a second mounting groove 27 extending in the front-back direction at the left end of the guide groove, and a second lower elastic strip 28 is installed thereon; the vacuum chamber 1 is provided with a second rib 29 extending in the front-back direction above the second lower elastic strip 28, and the front and rear ends of the second rib 29 are respectively connected to the liquid-blocking rib 14; a second upper elastic strip 30 is installed at the bottom of the second rib 29, and a second extrusion channel for the pushing plate 25 to pass through is formed between the second upper elastic strip 30 and the second lower elastic strip 28.

[0053] It should be understood that when the pusher plate 25 returns to its original position to the left, the first upper elastic strip 24, in conjunction with the first lower elastic strip 22, intercepts the UV-curable resin remaining on the surface of the pusher plate 25. Furthermore, the pusher plate 25 can be kept continuously filled with the second extrusion channel, thus preventing the UV-curable resin from flowing out from the left end of the guide groove. The second power source 26 can be a linear drive device such as a cylinder, electric push rod, or linear motor. Additionally, when the pusher plate 25 moves to its right limit, the right end of the pusher plate 25 will slightly extend beyond the right end of the first extrusion channel. Furthermore, a release agent can be coated onto the surfaces of the second upper elastic strip 30 and the second lower elastic strip 28.

[0054] Embodiment 6

[0055] As shown in any one of Embodiments 2-5, a guide portion is provided on the inner side of the liquid barrier rib 14 in the right section; the guide portion has a guide slope surface 31 guiding the printed circuit board to slide into the sliding groove 9. Figure 4 Figure 10 It should be understood that the inner side of the liquid barrier rib 14 refers to the side thereof facing the other liquid barrier rib 14.

[0056] It should be understood that the inner side of the liquid barrier rib 14 refers to the side thereof facing the other liquid barrier rib 14.

[0057] Embodiment 7

[0058] As shown in any one of Embodiments 2-6, the power system comprises: a liquid inlet pipe 32 connecting the bottom of the vacuum chamber 1 and the lower part of the liquid pool 11, a third valve 33 and a delivery pump 34 installed on the liquid inlet pipe 32, a liquid outlet pipe 35 connecting the bottom of the vacuum chamber 1 and the upper part of the liquid pool 11, and a fourth valve 36 installed on the liquid outlet pipe 35; the inlet of the delivery pump 34 corresponds to the liquid pool 11, and the outlet corresponds to the vacuum chamber 1. Figure 8 Figure 9 It should be understood that closing the fourth valve 36, opening the third valve 33 and starting the delivery pump 34 can send the photocurable resin in the liquid pool 11 into the bottom of the vacuum chamber 1, thereby driving the piston plate 7 to move upward. Closing the third valve 33 and the delivery pump 34 and opening the fourth valve 36 can make the photocurable resin below the piston plate 7 in the vacuum chamber 1 spontaneously flow into the liquid pool 11 from the bottom of the vacuum chamber 1 along the liquid outlet pipe 35, thereby making the piston plate 7 move downward.

[0059] Embodiment 8

[0060] As shown in Embodiment 7, the top of the piston plate 7 is provided with a carrier plate 37, the carrier plate 37 is provided with a plurality of through holes penetrating up and down; the carrier plate 37 is uniformly provided with a plurality of downward extending supporting legs 38 along the periphery, the vacuum chamber 1 is provided with a supporting portion 39 corresponding to the supporting legs 38 at the bottom of the inner wall; the periphery of the piston plate 7 is correspondingly provided with a notch 40 to cooperate with the supporting legs 38 or the supporting portion 39; when the piston plate 7 falls on the bottom of the vacuum chamber 1 and the supporting legs 38 of the carrier plate 37 fall on the supporting portion 39 of the vacuum chamber 1, the interval between the piston plate 7 and the carrier plate 37 constitutes a liquid inlet cavity 41; the liquid suction pipe 12 is connected to the liquid inlet cavity 41.

[0061] As shown in Embodiment 7, the top of the piston plate 7 is provided with a carrier plate 37, the carrier plate 37 is provided with a plurality of through holes penetrating up and down; the carrier plate 37 is uniformly provided with a plurality of downward extending supporting legs 38 along the periphery, the vacuum chamber 1 is provided with a supporting portion 39 corresponding to the supporting legs 38 at the bottom of the inner wall; the periphery of the piston plate 7 is correspondingly provided with a notch 40 to cooperate with the supporting legs 38 or the supporting portion 39; when the piston plate 7 falls on the bottom of the vacuum chamber 1 and the supporting legs 38 of the carrier plate 37 fall on the supporting portion 39 of the vacuum chamber 1, the interval between the piston plate 7 and the carrier plate 37 constitutes a liquid inlet cavity 41; the liquid suction pipe 12 is connected to the liquid inlet cavity 41. Figures 10-13

[0062] ​​​It should be understood that the second valve 13, the third valve 33, the fourth valve 36 are closed, the first valve 4 is opened, and the vacuum pump 3 is started, so that the air in the vacuum chamber 1 is pumped out. Then the first valve 4 and the vacuum pump 3 are closed, and the second valve 13 is opened, so that the light-cured resin in the reservoir 11 is sucked into the liquid inlet cavity 41 of the vacuum chamber 1 and penetrates upward, thereby filling the through holes of each printed circuit board. Then the second valve 13 is closed, the third valve 33 is opened, and the delivery pump 34 is started, so that the light-cured resin in the reservoir 11 is pumped into the bottom of the vacuum chamber 1, thereby driving the piston plate 7 to move upward and extruding the light-cured resin above the piston plate 7; since the compressibility of the liquid is very small, the piston plate 7 will stop moving after moving a small distance upward; during this process, the support 38 of the carrier plate 37 is inserted into the gap 40 of the piston plate 7, so that the carrier plate 37 does not move upward with the printed circuit board; in this way, the light-cured resin can be more stably and sufficiently filled into the through holes of each printed circuit board. Then the second valve 13 of the liquid suction pipe 12 is opened, the piston plate 7 continues to move upward, and the light-cured resin in the liquid inlet cavity 41 is quickly extruded back into the reservoir 11 through the liquid suction pipe 12; then the second valve 13 is closed, and the cover plate 6 is opened, so that the piston plate 7 attached to the lower surface of the carrier plate 37 moves upward with the carrier plate 37 and the printed circuit board placed on the carrier plate 37, thereby making the printed circuit board emerge from the taking and placing opening 5; in this way, the printed circuit boards emerging from the taking and placing opening 5 can be sequentially pushed into the chute 9 on the right side of the vacuum chamber 1 by the pushing mechanism 8. The present application first opens the second valve 13, so that the light-cured resin in the liquid inlet cavity 41 is extruded back into the reservoir 11 through the liquid suction pipe 12, and then the cover plate 6 is opened; instead of directly opening the cover plate 6, the light-cured resin in the liquid inlet cavity 41 is extruded above the carrier plate 37, overflows from the taking and placing opening 5, and flows out from the opening 20 at the left end of the chute 9 into the reservoir 11; the advantage is that the light-cured resin can be prevented from rapidly overflowing from the taking and placing opening 5, so as to overflow to the right side of the first extrusion channel beyond the first lower elastic strip 22.

[0063] Example 9

[0064] As shown in Figure 4 , Figure 11 , Figure 13 on the basis of example 8, the upper surface of the piston plate 7 is provided with a plurality of upwardly extending protruding columns 42, the protruding columns 42 correspond to the through holes one by one; when the piston plate 7 falls on the bottom of the vacuum chamber 1 and the support 38 of the carrier plate 37 falls on the support part 39 of the vacuum chamber 1, the top of the protruding column 42 is lower than the lower surface of the carrier plate 37; when the upper surface of the piston plate 7 is attached to the lower surface of the carrier plate 37, the protruding column 42 fills the through hole.

[0065] It should be understood that when the second valve 13 opens and the piston plate 7 continues to move upward, squeezing the photocurable resin in the inlet chamber 41 back from the suction pipe 12 to the storage tank 11, the protrusion 42 of the piston plate 7 will block the through hole of the carrier plate 37. This prevents the photocurable resin above the carrier plate 37 from flowing back into the inlet chamber 41 through the through hole, ensuring that the photocurable resin is stably filled in the through holes of the printed circuit board. Typically, for the same type of printed circuit board, a corresponding carrier plate 37 can be manufactured, so that the through holes of the carrier plate 37 correspond one-to-one with the through holes of the printed circuit board. This allows the photocurable resin to better fill the through holes of the printed circuit board. In addition, the thickness of the piston plate 7 is greater than the diameter of the interface between the inlet chamber 41 and the infusion pipe.

[0066] Example 10

[0067] like Figure 8 , Figure 10 , Figure 11 , Figure 14 , Figure 15 As shown, based on any one of Embodiments 2 to 9, the liquid-blocking rib 14 has upwardly extending columns at both ends, and a cantilever 43 is provided at the upper end of the columns; the cantilever 43 is equipped with a locking device 44; the locking device 44 includes: a sleeve 45 with a flange at the upper end, a clamping member 46 disposed in the sleeve 45, and a locking bolt 47 disposed on the top of the clamping member 46; the upper section of the sleeve 45 has an internal thread adapted to the locking bolt 47; the upper end of the clamping member 46 has a cap; the lower end of the sleeve 45 has an annular limiting part. Part 48 is provided to prevent the cap of the abutment 46 from coming off from the lower end of the sleeve 45; a first compression spring 49 is provided between the cap and the limiting part 48; the lower end of the abutment 46 extends out from the lower end of the sleeve 45 to abut against the cover plate 6; a plurality of grooves 50 are evenly arranged around the top of the vacuum chamber 1 around the pick-up and put-out port 5, and a second compression spring 15 for lifting the cover plate 6 is arranged in the grooves 50; there is a gap between the cantilever 43 and the liquid-blocking rib 14 that is greater than the thickness of the cover plate 6 for picking up and putting down the cover plate 6; an elastic sealing layer is provided on the lower surface of the cover plate 6.

[0068] It should be understood that when the light-cured resin in the liquid inlet cavity 41 is extruded back to the liquid pool 11 through the liquid suction pipe 12, the second valve 13 is closed, and the locking bolt 47 is screwed upward, so that the cover plate 6 is lifted by the second compression spring 15, and a space corresponding to the thickness of the printed circuit board is left between the top of the vacuum chamber 1 and the cover plate 6; in this way, only one printed circuit board can be taken out of the taking and placing opening 5 at a time; by moving the pushing plate 25 to the right, the printed circuit board taken out of the taking and placing opening 5 can be pushed into the chute 9; by resetting the pushing plate 25 to the left, the next printed circuit board can be taken out of the taking and placing opening 5; by repeating the above steps, the printed circuit boards can be pushed into the chute 9 one by one. When the printed circuit boards in the vacuum chamber 1 are completely taken out, the delivery pump 34 and the third valve 33 are closed, and the fourth valve 36 is opened, so that the light-cured resin below the piston plate 7 in the vacuum chamber 1 flows back to the liquid pool 11 from the bottom of the vacuum chamber 1 through the liquid discharge pipe 35, so that the piston plate 7 falls back to the bottom of the vacuum chamber 1. Continue to screw the locking bolt 47 upward, and then take the cover plate 6 out from between the overhanging wall and the liquid blocking edge 14, so as to put the next batch of printed circuit boards into the vacuum chamber 1. The elastic sealing layer is usually made of rubber or elastic plastic, and a layer of release agent can be coated on the surface.

[0069] Although the specific embodiments of the present application are described above, those skilled in the art should understand that various changes or modifications can be made to these embodiments without departing from the principles and essence of the present application, and such changes and modifications fall within the protection scope of the present application.

Claims

1. A jack device for printed circuit board, characterized in that: it comprises: a vacuum chamber (1) ; an upper part of the vacuum chamber (1) is communicated with a vacuum pump (3) through an exhaust pipe (2), and the exhaust pipe (2) is provided with a first valve (4) ; a top of the vacuum chamber (1) is provided with a taking and placing opening (5), and a cover plate (6) is arranged; a piston plate (7) is arranged in the vacuum chamber (1), and a power system for driving the piston plate (7) to move up and down is arranged; a pushing mechanism (8) is arranged on the left side of the vacuum chamber (1) to push the printed circuit board coming out of the taking and placing opening (5) into a chute (9) on the right side of the vacuum chamber (1) ; the chute (9) extends to a curing chamber (10), and the curing chamber (10) is provided with a curing lamp; a liquid storage tank (11) is arranged between the vacuum chamber (1) and the curing chamber (10), and the liquid storage tank (11) is arranged below the chute (9) ; the vacuum chamber (1) is communicated with the liquid storage tank (11) through a liquid suction pipe (12), and the liquid suction pipe (12) is provided with a second valve (13). 2.The jack device for printed circuit board according to claim 1, characterized in that: the vacuum chamber (1) is provided with a liquid blocking rib (14) extending along the left-right direction on each of the front and back sides of the top, so as to form a guide groove between the two liquid blocking ribs (14) ; a groove bottom of the guide groove is flush with a groove bottom of the chute (9). 3.The jack device for printed circuit board according to claim 2, characterized in that: the chute (9) is provided with a first power source (16) for driving the chute (9) to move left and right, so that the left end of the chute (9) is attached to or separated from the right outer wall of the vacuum chamber (1) ; a release film (17) is arranged in the chute (9) ; a unwinding machine (18) for unwinding the release film (17) is arranged on the bottom of the left segment of the chute (9), and a winding machine (19) for winding the release film (17) is arranged on the bottom of the right segment of the chute (9). 4.The jack device for printed circuit board according to claim 3, characterized in that: the chute (9) is provided with an opening (20) on the left end of the groove wall; the chute (9) is provided with a first mounting groove (21) extending along the front-back direction on the right side of the opening (20), and a first lower elastic strip (22) is arranged in the first mounting groove (21) ; a first rib (23) extending along the front-back direction is arranged above the first lower elastic strip (22), and the front and back ends of the first rib (23) are connected with the front and back groove walls of the chute (9), respectively; a first upper elastic strip (24) is arranged on the bottom of the first rib (23), and a first extrusion channel for the printed circuit board is formed between the first upper elastic strip (24) and the first lower elastic strip (22). 5.The jack device for printed circuit board according to claim 2, characterized in that: the pushing mechanism (8) comprises a horizontally arranged pushing plate (25) and a second power source (26) for driving the pushing plate (25) to move left and right; a second mounting groove (27) extending along the front-back direction is arranged on the left end of the guide groove of the vacuum chamber (1), and a second lower elastic strip (28) is arranged in the second mounting groove (27). The vacuum chamber (1) is provided with a second ridge (29) extending in the front-rear direction above the second lower elastic strip (28), and the front-rear ends of the second ridge (29) are connected with the liquid blocking ridge (14) respectively; The bottom of the second ridge (29) is provided with a second upper elastic strip (30), and the second upper elastic strip (30) and the second lower elastic strip (28) form a second extrusion channel for the pushing plate (25) to pass through.

6. The jack device of printed circuit board according to claim 2, wherein: The liquid blocking ridge (14) is provided with a guide portion on the inner side of the right section; the guide portion has a guide slope surface (31) guiding the printed circuit board to slide into the sliding groove (9).

7. The jack device of printed circuit board according to any one of claims 2-6, wherein: The power system comprises a liquid inlet pipe (32) connecting the bottom of the vacuum chamber (1) with the lower part of the liquid storage pool (11), a third valve (33) and a delivery pump (34) installed on the liquid inlet pipe (32), a liquid outlet pipe (35) connecting the bottom of the vacuum chamber (1) with the upper part of the liquid storage pool (11), and a fourth valve (36) installed on the liquid outlet pipe (35); The inlet of the delivery pump (34) corresponds to the liquid storage pool (11), and the outlet corresponds to the vacuum chamber (1).

8. The jack device of printed circuit board according to claim 7, wherein: The top of the piston plate (7) is provided with a carrier plate (37) having a plurality of through holes penetrating up and down; The carrier plate (37) is uniformly provided with a plurality of downward extending supporting legs (38) along the periphery, and the vacuum chamber (1) is provided with supporting portions (39) corresponding to the supporting legs (38) on the inner wall bottom; The periphery of the piston plate (7) is correspondingly provided with notches (40) to cooperate with the supporting legs (38) or the supporting portions (39); When the piston plate (7) falls on the bottom of the vacuum chamber (1) and the supporting legs (38) of the carrier plate (37) fall on the supporting portions (39) of the vacuum chamber (1), the interval between the piston plate (7) and the carrier plate (37) forms a liquid inlet cavity (41); The liquid suction pipe (12) is connected to the liquid inlet cavity (41).

9. The jack device of printed circuit board according to claim 8, wherein: The upper surface of the piston plate (7) is provided with a plurality of upward extending convex columns (42) corresponding to the through holes one by one; When the piston plate (7) falls on the bottom of the vacuum chamber (1) and the supporting legs (38) of the carrier plate (37) fall on the supporting portions (39) of the vacuum chamber (1), the top of the convex column (42) is lower than the lower surface of the carrier plate (37); When the upper surface of the piston plate (7) is attached to the lower surface of the carrier plate (37), the convex column (42) fills the through hole.

10. The jack device of printed circuit board according to claim 7, wherein: The liquid blocking ridge (14) is provided with upward extending vertical columns at the left and right ends, and the upper ends of the vertical columns are provided with cantilevers (43); The cantilevers (43) are installed with locking devices (44). The locking device (44) comprises a sleeve (45) with a flange at its upper end, a pressing member (46) arranged in the sleeve (45), and a locking bolt (47) arranged at the top of the pressing member (46); The upper section of the sleeve (45) has an internal thread adapted to the locking bolt (47); The upper end of the pressing member (46) has a cap portion; The lower end of the sleeve (45) has an annular limiting portion (48) to prevent the cap portion of the pressing member (46) from coming out of the lower end of the sleeve (45); A first compression spring (49) is arranged between the cap portion and the limiting portion (48); The lower end of the pressing member (46) comes out of the lower end of the sleeve (45) to press against the cover plate (6); Multiple recesses (50) are uniformly arranged around the top of the vacuum chamber (1) at the access opening (5), and a second compression spring (15) for lifting the cover plate (6) is arranged in each recess (50); The cantilever (43) and the liquid blocking rib (14) have a spacing greater than the thickness of the cover plate (6) to facilitate the taking and placing of the cover plate (6); The lower surface of the cover plate (6) is provided with an elastic sealing layer.

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