PCBA (printed circuit board assembly) low-pressure injection molding device

Abstract

The utility model relates to the technical field of PCBA assembly production, and discloses a PCBA assembly low-pressure injection molding device which comprises a base, the upper surface of the base is fixedly connected with a workbench, the upper surface of the workbench is fixedly connected with a top plate, the lower surface of the top plate is fixedly connected with a first hydraulic cylinder, the output end of the first hydraulic cylinder is fixedly connected with an upper mold frame, and the output end of the first hydraulic cylinder is fixedly connected with a lower mold frame. A fixing plate is fixedly connected to the lower surface of the upper mold frame, an upper mold is slidably connected to the inner wall of the fixing plate, a lower mold table is fixedly connected to the upper surface of the workbench, a lower mold is slidably connected to the inner wall of the lower mold table, and an ejection assembly is arranged in the lower mold table. According to the injection mold, the inclined block is driven to slide above the sliding rail through the extension and retraction of the hydraulic cylinder II, and then the ejection block is driven to eject an injection molded PCBA board by arranging the roller on the inclined surface of the inclined block, so that the effect of quickly demolding the PCBA board can be realized, and the demolding speed is increased.

Description

TECHNICAL FIELD

[0001] The utility model relates to PCBA assembly production technical field especially relates to a PCBA assembly low pressure injection molding device. BACKGROUND

[0002] In the field of electronic manufacturing, the low pressure injection molding process of PCBA (printed circuit board assembly) is widely used in the packaging protection, structure fixation and other scenes of electronic components due to its advantages of high efficiency, low stress and high reliability. With the development trend of miniaturization and integration of electronic devices, higher requirements are put forward for the molding efficiency, mold replacement convenience and product consistency of PCBA assembly. The traditional PCBA low pressure injection molding device needs to ensure the injection precision while considering the demolding efficiency and mold adaptation flexibility in the production process to meet the diversified production needs and rapid iteration market rhythm.

[0003] In the prior art, the PCBA low pressure injection molding device usually adopts a mechanical structure of fixed mold cavity combined with ejector pin to realize demolding. The technical principle is that after injection is completed, the ejector pin mechanism directly pushes the PCBA plate out of the mold cavity under the action of driving force. In terms of mold replacement, it mainly depends on the screw fixing or buckle limiting mode, and the disassembly and installation are completed by manual operation. Although this structure can realize the basic molding function, it gradually exposes some limitations in long-term production practice.

[0004] However, the existing device has the following problems in the demolding process: the traditional ejector pin ejection structure is limited by the mechanical transmission efficiency, and it is difficult to realize rapid demolding, which further affects the overall production efficiency. In addition, the traditional mold changing mode lacks quick changing structure, which increases the mold changing time and further reduces the production continuity. Therefore, a PCBA assembly low pressure injection molding device is proposed to solve the above problems. UTILITY MODEL CONTENTS

[0005] In order to make up for the above shortcomings, the utility model provides a PCBA assembly low pressure injection molding device, which aims to improve the traditional structure which is difficult to realize rapid demolding, affects the overall production efficiency and reduces the production continuity.

[0006] In order to achieve the above purpose, the utility model provides the following technical scheme: a PCBA assembly low pressure injection molding device, comprising a base, the upper surface of the base is fixedly connected with a workbench, the upper surface of the workbench is fixedly connected with a top plate, the lower surface of the top plate is fixedly connected with a hydraulic cylinder one, the output end of the hydraulic cylinder one is fixedly connected with an upper mold frame, the lower surface of the upper mold frame is fixedly connected with a fixed plate, the inner wall of the fixed plate is slidingly connected with an upper mold, the upper surface of the workbench is fixedly connected with a lower mold table, the inner wall of the lower mold table is slidingly connected with a lower mold, and the inside of the lower mold table is provided with an ejection assembly.

[0007] The ejection assembly comprises a bevel, a roller and two hydraulic cylinders, the output end of the second hydraulic cylinder is fixedly connected with the bevel, the lower surface of the bevel is fixedly connected with a sliding seat, the inner wall of the sliding seat is slidably connected with a sliding rail, the roller is arranged on the outer wall of the bevel, the outer wall of the roller is rotatably connected with a support, the upper surface of the support is fixedly connected with a jacking rod, and one end of the jacking rod is fixedly connected with a jacking block.

[0008] Further, the outer wall of the lower mold base is fixedly connected with a hinged seat, the outer wall of the hinged seat is rotatably connected with a handle, and the outer wall of the hinged seat is rotatably connected with a wedge block.

[0009] Further, the lower mold is internally provided with a limiting groove, the wedge block is placed in the limiting groove, and one end of the first spring is fixedly connected to the outer wall of the handle.

[0010] Further, the upper surface of the workbench is fixedly connected with a supporting column, one end of the supporting column is fixedly connected to the lower surface of the top plate

[0011] Further, the inner wall of the upper mold frame is slidably connected with a guide rail, one end of the guide rail is fixedly connected to the upper surface of the workbench, and the other end of the guide rail is fixedly connected to the lower surface of the top plate.

[0012] Further, the output end of the second hydraulic cylinder is fixedly connected to one side of the outer wall of the lower mold base, and the lower surface of the sliding rail is fixedly connected to the inner wall of the lower mold base.

[0013] Further, the outer wall of the jacking rod is fixedly connected with a fixed block, the outer wall of the jacking rod is sleeved with a second spring, and the outer wall of the jacking block is slidably connected to the inner wall of the lower mold through the lower mold base and the lower mold.

[0014] Further, the upper surface of the fixed block is fixedly connected to the inner wall of the lower mold base, one end of the second spring is fixedly connected to the upper surface of the support, and the other end of the second spring is fixedly connected to the lower surface of the fixed block.

[0015] The utility model has the advantages of the following beneficial effects:

[0016] 1、 in the utility model, the telescopic hydraulic cylinder two drives the bevel to slide above the sliding rail, and then the roller is arranged on the inclined surface of the bevel, and then the jacking block is driven to eject the completed PCBA board, so that the effect of rapid demolding of the PCBA board is realized, the demolding speed is improved, the effect of demolding of irregular PCBA boards is realized through the large contact area of the top plate and the PCBA board, and the production efficiency is greatly improved, and the practicability of the device is improved.

[0017] 2. The utility model discloses, through pressing handle, because handle and wedge all are with the rotation connection of hinged seat, cooperate the synergy of spring again, can realize the effect that makes wedge separate from the limiting slot through pressing handle, and the lower mould is extracted from the lower mould platform inner wall, can reach the effect of quick replacement mould, not only enhanced the flexibility of production, and then through shortening the time of die changing, the processing efficiency is improved, and then the practicality of device is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 A three-dimensional structure schematic diagram of a PCBA assembly low-pressure injection molding device is provided for the utility model;

[0019] Figure 2 An upper die holder part mechanism schematic diagram of a PCBA assembly low-pressure injection molding device is provided for the utility model;

[0020] Figure 3 A lower mould platform cross section structure schematic diagram of a PCBA assembly low-pressure injection molding device is provided for the utility model;

[0021] Figure 4 A top block part structure schematic diagram of a PCBA assembly low-pressure injection molding device is provided for the utility model;

[0022] Figure 5 A wedge part structure schematic diagram of a PCBA assembly low-pressure injection molding device is provided for the utility model.

[0023] Legend:

[0024] 1, base; 2, workbench; 3, support column; 4, guide rail; 5, hydraulic cylinder one; 6, upper die holder; 7, upper mould; 8, fixed plate; 9, top plate; 10, lower mould platform; 11, limiting slot; 12, hydraulic cylinder two; 13, lower mould; 14, slide rail; 15, slide base; 16, inclined block; 17, spring one; 18, handle; 19, wedge; 20, top block; 21, top rod; 22, fixed block; 23, spring two; 24, support; 25, idler; 26, hinged seat. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0026] Reference Figure 1 - Figure 5The utility model provides a kind of embodiment: a PCBA assembly low-pressure injection molding device, including base 1, base 1 upper surface is fixedly connected with workbench 2, workbench 2 upper surface is fixedly connected with top plate 9, top plate 9 lower surface is fixedly connected with hydraulic cylinder one 5, hydraulic cylinder one 5 cooperation guide rail 4, to drive the upper die 6 up-down movement, reaches the effect that upper die 7 and lower die 13 are driven to form closure, and then PCBA board is injection molded, guide rail 4 is slidably connected in the inner wall of upper die 6, and the output end of hydraulic cylinder one 5 is fixedly connected with upper die 6, and the lower surface of upper die 6 is fixedly connected with fixed plate 8, and fixed plate 8 is used to fix upper die 7 and replace upper die 7, and upper die 7 is slidably connected in the inner wall of fixed plate 8, and the upper surface of workbench 2 is fixedly connected with lower die table 10, and lower die table 10 inner wall is slidably connected with lower die 13, and ejection assembly is arranged in lower die table 10, and the ejection assembly includes inclined block 16, roller 25 and hydraulic cylinder two 12, and hydraulic cylinder two 12 is used to drive inclined block 16 to slide, and the output end of hydraulic cylinder two 12 is fixedly connected with inclined block 16, and inclined block 16 is used for the sliding of roller 25, and then the effect of the rising of ejector rod 21 is realized, the lower surface of inclined block 16 is fixedly connected with sliding seat 15, and sliding seat 15 cooperation slide rail 14, and then the sliding effect of inclined block 16 is realized, and slide rail 14 is slidably connected in the inner wall of sliding seat 15, and roller 25 is arranged on the outer wall of inclined block 16, and the outer wall of roller 25 is rotatably connected with support 24, and the upper surface of support 24 is fixedly connected with ejector rod 21, and ejector rod 21 is used to be fixed with top block 20, and then the effect of top block 20 is driven to eject PCBA board and carries out quick demoulding, one end of ejector rod 21 is fixedly connected with top block 20, the upper surface of workbench 2 is fixedly connected with support column 3, and support column 3 is used to support top plate 9, and one end of support column 3 is fixedly connected on the lower surface of top plate 9, one end of guide rail 4 is fixedly connected on the upper surface of workbench 2, and the other end of guide rail 4 is fixedly connected on the lower surface of top plate 9, the output end of hydraulic cylinder two 12 is fixedly connected on one side of the outer wall of lower die table 10, the lower surface of slide rail 14 is fixedly connected on the inner wall of lower die table 10, the outer wall of ejector rod 21 is fixedly connected with fixed block 22, fixed block 22 is used to fix spring two 23, and pressure is applied to spring two 23, spring two 23 is sleeved on the outer wall of ejector rod 21, and spring two 23 is used to assist the reset operation of top block 20, the outer wall of top block 20 is slidably connected in the inner wall of lower die 13, and the inner wall of lower die table 10 is fixedly connected on the upper surface of fixed block 22, and one end of spring two 23 is fixedly connected on the upper surface of support 24, and the other end of spring two 23 is fixedly connected on the lower surface of fixed block 22.

[0027] Refer to Figure 1 - Figure 5The outer wall of the lower mold base 10 is fixedly connected with a hinge seat 26, the hinge seat 26 cooperates with the handle 18 and the wedge block 19, and due to the elastic force of the spring 17, the wedge block 19 is clamped in the lower mold 13, so that the lower mold 13 is fixed, and the handle 18 is pressed to easily pull out the lower mold 13 for replacement, the outer wall of the lower mold base 10 is fixedly connected with the spring 17, the outer wall of the hinge seat 26 is rotatably connected with the handle 18, the outer wall of the hinge seat 26 is rotatably connected with the wedge block 19, the inside of the lower mold 13 is provided with a limiting groove 11, the wedge block 19 is placed in the limiting groove 11, and one end of the spring 17 is fixedly connected with the outer wall of the handle 18.

[0028] Working principle: when the PCBA assembly low-pressure injection molding device needs to be used, first, the PCBA board is placed in the inner wall of the lower mold 13, at this time, the upper mold frame 6 is driven to move downward by the extension of the hydraulic cylinder 5, so that the upper mold 7 and the lower mold 13 are closed to form a sealed chamber, so that the PCBA board is injection molded, when the injection is completed, the upper mold 7 is separated from the lower mold 13 by the retraction of the hydraulic cylinder 5, at this time, the output end of the hydraulic cylinder 2 is connected with the inclined block 16, and cooperates with the slide 15 and the slide rail 14, so that the hydraulic cylinder 2 drives the inclined block 16 to slide above the slide rail 14, at this time, the roller 25 is arranged on the inclined surface of the inclined block 16, and the top block 20 is installed at one end of the top rod 21, so that the top block 20 is driven to move up and down by the sliding of the inclined block 16, since the top block 20 is installed on the inner wall of the lower mold 13, and cooperates with the spring 2, the top block 20 is driven to eject the PCBA board by the extension and retraction of the hydraulic cylinder 2, secondly, when the mold needs to be replaced, the handle 18 and the wedge block 19 are rotatably connected with the hinge seat 26, and cooperate with the spring 17, so that the handle 18 is pressed to make the wedge block 19 separate from the limiting groove 11, at this time, the lower mold 13 and the lower mold base 10 are separated from the wedge block 19, so that the lower mold 13 is easily pulled out for replacement, at this time, the mold to be replaced is pushed into the inner wall of the lower mold base 10, and the wedge block 19 is reset to the limiting groove 11 by pressing the handle 18 and cooperating with the spring 17, so that the mold is replaced, at this time, the upper mold 7 is pulled out from the inner wall of the fixed plate 8, so that the upper mold 7 is replaced.

[0029] Finally, it should be pointed out that: the above-mentioned is only the preferred embodiment of the present application, and is not used to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical scheme recorded in the foregoing embodiments can still be modified, or some technical features can be replaced, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A PCBA assembly low-pressure injection molding device, comprising a base (1), characterized in that: The upper surface of the base (1) is fixedly connected with a workbench (2), the upper surface of the workbench (2) is fixedly connected with a top plate (9), the lower surface of the top plate (9) is fixedly connected with a hydraulic cylinder I (5), the output end of the hydraulic cylinder I (5) is fixedly connected with an upper die holder (6), the lower surface of the upper die holder (6) is fixedly connected with a fixed plate (8), the inner wall of the fixed plate (8) is slidably connected with an upper die (7), the upper surface of the workbench (2) is fixedly connected with a lower die table (10), the inner wall of the lower die table (10) is slidably connected with a lower die (13), and the lower die table (10) is provided with an ejection assembly inside. The ejection assembly comprises an inclined block (16), a roller (25) and a hydraulic cylinder II (12), the output end of the hydraulic cylinder II (12) is fixedly connected with the inclined block (16), the lower surface of the inclined block (16) is fixedly connected with a sliding seat (15), the inner wall of the sliding seat (15) is slidably connected with a sliding rail (14), the roller (25) is arranged on the outer wall of the inclined block (16), the outer wall of the roller (25) is rotatably connected with a support (24), the upper surface of the support (24) is fixedly connected with a jacking rod (21), and one end of the jacking rod (21) is fixedly connected with a jacking block (20).

2. The PCBA assembly low-pressure injection molding device according to claim 1, wherein: The outer wall of the lower die table (10) is fixedly connected with a hinged seat (26), the outer wall of the lower die table (10) is fixedly connected with a spring I (17), the outer wall of the hinged seat (26) is rotatably connected with a handle (18), and the outer wall of the hinged seat (26) is rotatably connected with a wedge block (19).

3. The PCBA assembly low-pressure injection molding device according to claim 2, characterized in that: The lower die (13) is provided with a limiting groove (11) inside, the wedge block (19) is placed inside the limiting groove (11), and one end of the spring I (17) is fixedly connected to the outer wall of the handle (18).

4. The PCBA assembly low-pressure injection molding device according to claim 1, wherein: The upper surface of the workbench (2) is fixedly connected with a supporting column (3), and one end of the supporting column (3) is fixedly connected to the lower surface of the top plate (9).

5. The PCBA assembly low-pressure injection molding device according to claim 1, characterized in that: The inner wall of the upper die holder (6) is slidably connected with a guide rail (4), one end of the guide rail (4) is fixedly connected to the upper surface of the workbench (2), and the other end of the guide rail (4) is fixedly connected to the lower surface of the top plate (9).

6. The PCBA assembly low-pressure injection molding device according to claim 1, wherein: The output end of the hydraulic cylinder II (12) is fixedly connected to one side of the outer wall of the lower die table (10), and the lower surface of the sliding rail (14) is fixedly connected to the inner wall of the lower die table (10).

7. The PCBA assembly low-pressure injection molding device according to claim 1, characterized in that: The outer wall of the jacking rod (21) is fixedly connected with a fixed block (22), the outer wall of the jacking rod (21) is sleeved with a spring II (23), and the outer wall of the jacking block (20) penetrates through the lower die table (10) and the lower die (13) and is slidably connected to the inner wall of the lower die (13).

8. The PCBA assembly low-pressure injection molding device according to claim 7, characterized in that: The upper surface of the fixed block (22) is fixedly connected to the inner wall of the lower die table (10), one end of the spring II (23) is fixedly connected to the upper surface of the support (24), and the other end of the spring II (23) is fixedly connected to the lower surface of the fixed block (22).

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