Novel translation type jig structure of tunnel furnace

Abstract

The utility model discloses a novel translation type jig structure of a tunnel furnace. The novel translation type jig structure comprises a bottom rod, a sliding seat, a support arm and a V-shaped bracket, a guide sliding groove is formed in the bottom rod, two sets of sliding seats are installed in the guide sliding groove in a sliding mode, support arms are perpendicularly and fixedly connected to the two sets of sliding seats, the support arms are symmetrically arranged, and a plurality of sets of supporting pieces are evenly and fixedly connected to the inner sides of the support arms. At least two sets of V-shaped supports are fixedly installed on the bottom rod and arranged between the two sets of support arms. According to the utility model, the quality and the efficiency of the PCB in the baking process are obviously improved, the edge damage and the surface bending deformation of the PCB are effectively prevented, the applicability is strong, and the economic benefit and the practical value are obvious.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of PCB board production, and specifically relates to a novel tunnel furnace translation type jig structure. BACKGROUND

[0002] In the electronic manufacturing industry, the production process of printed circuit boards (PCB) needs to go through multiple procedures, including tunnel oven baking after printing ink on both sides of the PCB. This link has a crucial influence on the quality of the PCB. In order to ensure the integrity and performance of the PCB during the baking process, a special jig is usually used to support and position the PCB. However, the existing tunnel oven board jigs on the market have some significant defects, which affect the production efficiency and product quality.

[0003] Firstly, the traditional jig structure can only contact the two side edges of the PCB when supporting the PCB. Due to the limitations of the jig structure design, this contact method can easily cause mechanical damage to the edge of the PCB. Especially for thin PCBs, this edge support method causes stress concentration on the board surface, which can easily cause bending deformation of the board surface, affecting the yield rate of the subsequent process. At the same time, during the high-temperature baking process, the PCB surface may be scratched and stuck due to thermal expansion and gravity, further reducing the production yield.

[0004] Therefore, in order to prevent the PCB from being scratched, stuck, and deformed during the tunnel oven baking process, it is particularly necessary to design a novel tunnel oven translation type jig structure. SUMMARY

[0005] In view of the above deficiencies in the prior art, the utility model aims to provide a novel tunnel oven translation type jig structure, which significantly improves the quality and efficiency of the PCB baking process, effectively prevents the edge of the PCB from being damaged, prevents the board surface from being bent and deformed, has strong applicability, and has significant economic benefits and practical value.

[0006] The utility model adopts the technical scheme of a novel tunnel oven translation type jig structure, which comprises a bottom rod, a sliding seat, a support arm, and a V-shaped support. A guide sliding groove is formed in the bottom rod. Two groups of sliding seats are slidingly installed in the guide sliding groove. Two groups of support arms are perpendicularly connected to the bottom rod and symmetrically arranged. Multiple support pieces are uniformly connected to the inner side of the support arm. The V-shaped support comprises at least two groups of support pieces fixedly installed on the bottom rod and arranged between the two groups of support arms.

[0007] In some implementations, to ensure that the support arm can be stably installed on the slide, a connecting section is fixedly connected to the bottom of the support arm, the connecting section is parallel to the bottom rod and the slide, and the connecting section is fixedly installed on the slide by bolts.

[0008] In some implementations, to improve the positioning effect of the V-shaped support on the PCB and ensure stable support of the V-shaped support on the PCB, the following technical solutions are provided.

[0009] The inner side end of the slide is fixedly connected with a connecting seat, and the V-shaped support is fixedly installed on the connecting seat.

[0010] In some implementations, to ensure that the V-shaped support can be stably fixed on the connecting seat or the bottom rod, the following technical solutions are provided.

[0011] The bottom of the V-shaped support is fixedly connected with a connecting plate, the connecting plate is parallel to the bottom rod and the connecting seat, and the connecting plate is fixedly installed on the bottom rod or the connecting plate by bolts.

[0012] In some implementations, to ensure that the slide can stably slide along the length direction of the bottom rod and ensure stable support on the PCB, the following technical solutions are provided.

[0013] The bottom rod comprises two groups of symmetrically fitted and fixedly connected parts, the slide is slidingly installed in both groups of the bottom rod, the two groups of the slide are fixedly connected by a connecting plate arranged on both sides of the bottom rod, and the connecting plate is fixedly connected with the slide by bolts.

[0014] In some implementations, to facilitate control of the two groups of support arms to realize symmetrical movement, so that the two groups of support arms are close to or away from each other, and the distance between the two groups of support arms is adjusted to effectively support the PCB of a specific size, the following technical solutions are provided.

[0015] The bottom rod arranged in the lower layer is fixedly connected with an assembly plate, the assembly plate is arranged in the guide sliding groove, two groups of adjusting screws are rotatably installed in the assembly plate, the inner side ends of the two groups of adjusting screws are fixedly connected by a connecting rod, the two groups of adjusting screws are each threadedly connected with a group of the slide, and the thread grooves of the two groups of adjusting screws are oppositely arranged.

[0016] In some implementations, to facilitate the operation of the adjusting screw to drive the slide to stably slide in the guide sliding groove, the following technical solutions are provided.

[0017] The outer side end of the adjusting screw is fixedly connected with an operating head, and a hexagonal recess is formed in the operating head.

[0018] The beneficial effects of the utility model are as follows:

[0019] 1. Effectively prevent PCB edge damage: the new fixture structure optimizes the support design, avoids the shortcomings of traditional fixtures that only support the edges of the PCB board, thereby reducing mechanical damage to the edges of the PCB board and protecting the integrity of the board edge.

[0020] 2. Prevents board surface bending deformation: the fixture structure of the present solution can evenly distribute the weight of the PCB board, especially for thin PCB boards, preventing bending deformation of the board surface caused by thermal expansion and self-weight during high-temperature baking, improving the flatness of the board surface and ensuring the yield of subsequent processes.

[0021] 3. Strong applicability: the fixture structure of the present solution considers non-sized PCB boards, and adjusts the distance between the two groups of support arms to effectively support PCB boards of different sizes, has strong applicability, can meet various production needs, and has wide application prospects.

[0022] In summary, the new tunnel furnace translation fixture structure of the present application optimizes the design, effectively solves many problems in the prior art, significantly improves the quality and efficiency of the PCB baking process, effectively prevents PCB edge damage, prevents board surface bending deformation, has strong applicability, and has significant economic benefits and practical value. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a structural schematic view of the basic state of the present application;

[0024] Figure 2 is a structural schematic view of the present application with V-shaped supports installed on the sliding seat;

[0025] Figure 3 is a structural schematic view of the present application when using double-layer bottom rods;

[0026] Figure 4 is a structural schematic view of the support arm, V-shaped support, and sliding seat in combination;

[0027] Figure 5 is a structural schematic view of the combination of the two groups of sliding seats and V-shaped supports when using double-layer bottom rods;

[0028] Figure 6 is a structural schematic view of the combination of the two groups of sliding seats and V-shaped supports, adjusting screws, and bottom rods when using double-layer bottom rods.

[0029] In the figure: 1 bottom rod, 11 guide sliding groove, 12 assembly plate, 2 sliding seat, 21 connecting seat, 22 threaded hole, 3 support arm, 31 support piece, 32 weight-reducing hole, 33 connecting section, 4 V-shaped support, 41 connecting piece, 5 connecting plate, 61 adjusting screw, 611 operating head, 612 hexagonal recess, 62 connecting rod. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Please see Figures 1-6 A novel tunnel furnace translational fixture structure includes a base rod 1, a slide block 2, a support arm 3, and a V-shaped bracket 4. The base rod 1 has a guide groove 11, in which two sets of slide blocks 2 are slidably installed. Each set of slide blocks 2 is fixedly connected to a support arm 3 that is perpendicular to the base rod 1. The two sets of support arms 3 are symmetrically arranged. Multiple sets of support plates 31 are evenly fixed to the inner side of the support arm 3. The V-shaped bracket 4 includes at least two sets fixedly installed on the base rod 1 and is arranged between the two sets of support arms 3.

[0032] The guide groove 11 in the base rod 1 has a "convex" shaped cross section. The slide block 2 has a structure that nests and matches the "convex" shaped guide groove 11 to ensure that the slide block 2 can slide stably in the guide groove 11 of the base rod 1, and to prevent the slide block 2 from falling out of the guide groove 11 and affecting the effective support and positioning effect on the PCB board.

[0033] The support arm 3 and the support plate 31 on it are manufactured by a uniform casting process. While ensuring the structural strength of the support arm 3 to stably support the PCB board, it can effectively reduce the weight of the support arm 3.

[0034] To further reduce the weight of the support arm 3, weight reduction holes 32 are evenly provided on its side wall, which also serve as air vents, so as to reduce the weight of the support arm 3 as much as possible without affecting the stability of its own structure.

[0035] The V-shaped bracket 4 is fixed to the base rod 1 with bolts, and the V-shaped groove on it can effectively hold the PCB board in place. Together with the support plate 31 on the support arm 3, it supports the PCB board. The entire process does not touch the PCB board surface, so the PCB board will not be deformed by external forces.

[0036] The specific working principle and process are as follows: according to the size of the PCB board being processed, the two sets of sliding blocks 2 and support arms 3 slide along the base rod 1 under the action of external force. The distance between the two sets of support arms 3 is adjusted to match the size of the PCB board. After printing ink on both sides of the PCB board, the PCB board is pushed into the fixture structure provided in this application by means of a special board feeding mechanism, so that the PCB board is stuck in the V-groove in the V-shaped bracket 4, and the support plates 31 on the inner side of the two sets of support arms 3 hold the PCB board. The PCB board is then sent into the tunnel oven for baking by the fixture mechanism.

[0037] Throughout the process, the PCB board surface will not be damaged, and the PCB board will not be deformed due to external forces.

[0038] To ensure that the support arm 3 can be stably installed on the slide block 2, a connecting section 33 is fixedly connected to the bottom of the support arm 3. The connecting section 33 is parallel to the base rod 1 and the slide block 2, and the connecting section 33 is fixedly installed on the slide block 2 by bolts.

[0039] The connecting section 33 and the support arm 3 are manufactured by the same casting method. Both the slide 2 and the connecting section 33 are provided with positioning through holes. The support arm 3 and the slide 2 are stably fixed by bolts passing through the positioning through holes.

[0040] To improve the positioning effect of the V-shaped bracket 4 on the PCB and ensure stable support of the V-shaped bracket 4 on the PCB, the following technical solutions are provided.

[0041] A connecting seat 21 is fixedly connected to the inner end of the slide 2, and a V-shaped bracket 4 is fixedly installed on the connecting seat 21.

[0042] The V-shaped bracket 4, fixed on the connecting seat 21, moves synchronously with the slide 2 and the support arm 3, and works together with the V-shaped support piece 31, which is directly fixed on the bottom rod 1, to effectively position the PCB board.

[0043] To ensure that the V-shaped bracket 4 can be stably fixed on the connecting seat 21 or the base rod 1, the following technical solution is provided.

[0044] The bottom of the V-shaped bracket 4 is fixed with a connecting piece 41. The connecting piece 41 is parallel to the base rod 1 and the connecting seat 21. The connecting piece 41 is fixedly installed on the base rod 1 or the connecting piece 41 by bolts.

[0045] The V-shaped bracket 4 and the connecting piece 41 are manufactured by uniform casting. The bolts are fixed to the top of the base rod 1 or the bottom of the connecting seat 21 to ensure that the V-shaped bracket 4 is stably installed on the base rod 1 or the connecting seat 21.

[0046] To ensure that the slide block 2 can slide stably along the length of the base rod 1 and provide stable support for the PCB board, the following technical solution is provided.

[0047] The base rod 1 includes two sets of symmetrically fitted and fixedly connected. Each set of base rod 1 has a sliding seat 2 slidably installed in it. The two sets of sliding seats 2 are fixedly connected by connecting plates 5 arranged on both sides of the base rod 1. The connecting plates 5 are fixedly connected to the sliding seats 2 by bolts.

[0048] Two sets of symmetrically arranged base rods 1 are fixedly connected by bolts. The sliding seats slidably assembled on the two sets of base rods 1 are fixedly connected by connecting plates 5. Through the sliding combination of the two sets of sliding seats 2 and the guide groove 11, the stability of the support arm 3 sliding along the length of the base rod 1 can be effectively improved.

[0049] To facilitate the control of the two sets of support arms 3 to achieve symmetrical movement, so that the two sets of support arms 3 move closer or further away from each other, and thus adjust the distance between the two sets of support arms 3 to effectively support PCB boards of a specific size, the following technical solution is provided.

[0050] An assembly plate 12 is fixedly connected to the bottom rod 1 in the lower layer. The assembly plate 12 is arranged in the guide slide 11. Two sets of adjusting screws 61 are rotatably installed in the assembly plate 12. The inner ends of the two sets of adjusting screws 61 are fixedly connected by a connecting rod 62. Each set of adjusting screws 61 is screwed with a set of slides 2. The threaded grooves of the two sets of adjusting screws 61 are arranged in opposite directions.

[0051] The assembly plate 12 is fixedly installed in the guide groove 11 of the lower base rod 1 by welding or bolting, which can ensure that the adjusting screw 61 is stably installed in a relative rotation manner. The two sets of adjusting screws 61 are fixedly connected by the connecting rod 62 to ensure that the two sets of adjusting screws 61 keep running synchronously. The slide 2 mounted on the lower base rod 1 has a threaded through hole 22 that is screwed with the adjusting screw 61. Since the threaded grooves of the two sets of adjusting screws 61 are arranged in opposite directions, when the adjusting screw 61 is rotated, it can drive the two sets of slides 2 to always keep relative or opposite movement. Then, through the connecting plate 5, it drives the upper slide 2 and the support arm 3 to slide stably to adjust the distance between the two sets of support arms 3.

[0052] To facilitate the operation of the adjusting screw 61 to drive the slide block 2 to slide stably in the guide groove 11, the following technical solution is provided.

[0053] An operating head 611 is fixed to the outer end of the adjusting screw 61, and a hexagonal groove 612 is provided in the operating head 611.

[0054] When the drive slide 2 and support arm 3 slide along the guide groove 11 on the bottom rod 1, the adjusting screw 61 can be easily turned to operate stably by inserting the matching hexagonal column into the hexagonal recess 612.

[0055] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0056] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A novel tunnel furnace translational fixture structure, characterized in that: The system includes a base rod (1), a slide block (2), a support arm (3), and a V-shaped bracket (4). The base rod (1) has a guide groove (11). Two sets of slide blocks (2) are slidably installed in the guide groove (11). Each set of slide blocks (2) is fixedly connected to a support arm (3) that is perpendicular to the base rod (1). The two sets of support arms (3) are symmetrically arranged. Multiple sets of support plates (31) are evenly fixed to the inner side of each support arm (3). The V-shaped bracket (4) includes at least two sets fixedly installed on the base rod (1). The V-shaped bracket (4) is arranged between the two sets of support arms (3).

2. The novel tunnel furnace translational fixture structure according to claim 1, characterized in that: The bottom of the support arm (3) is fixedly connected to a connecting section (33), which is parallel to the bottom rod (1) and the slide (2). The connecting section (33) is fixedly installed on the slide (2) by bolts.

3. The novel tunnel furnace translational fixture structure according to claim 1, characterized in that: The inner end of the slide (2) is fixedly connected to a connecting seat (21), and a V-shaped bracket (4) is fixedly installed on the connecting seat (21).

4. The novel tunnel furnace translational fixture structure according to claim 3, characterized in that: The bottom of the V-shaped bracket (4) is fixed with a connecting piece (41). The connecting piece (41) is parallel to the base rod (1) and the connecting seat (21). The connecting piece (41) is fixedly installed on the base rod (1) or the connecting piece (41) by bolts.

5. The novel tunnel furnace translational fixture structure according to claim 1, characterized in that: The base rod (1) includes two sets of symmetrically fitted and fixedly connected, and the slide seat (2) is slidably installed in both sets of the base rod (1). The two sets of slide seats (2) are fixedly connected by connecting plates (5) arranged on both sides of the base rod (1). The connecting plates (5) are fixedly connected to the slide seats (2) by bolts.

6. The novel tunnel furnace translational fixture structure according to claim 5, characterized in that: An assembly plate (12) is fixedly connected to the bottom rod (1) arranged in the lower layer. The assembly plate (12) is arranged in the guide slide (11). Two sets of adjusting screws (61) are rotatably installed in the assembly plate (12). The inner ends of the two sets of adjusting screws (61) are fixedly connected by a connecting rod (62). Each set of adjusting screws (61) is screwed with a set of slides (2). The threaded grooves of the two sets of adjusting screws (61) are arranged in opposite directions.

7. The novel tunnel furnace translational fixture structure according to claim 6, characterized in that: The outer end of the adjusting screw (61) is fixed to the operating head (611), and the operating head (611) has a hexagonal recess (612).

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