CN216357463U

CN216357463U - Circuit board and production device thereof

Info

Publication number: CN216357463U
Application number: CN202122602016.8U
Authority: CN
Inventors: 张飞龙; 李秋梅; 罗奇
Original assignee: Kinwong Electronic Technology Longchuan Co Ltd
Current assignee: Kinwong Electronic Technology Longchuan Co Ltd
Priority date: 2021-10-27
Filing date: 2021-10-27
Publication date: 2022-04-19
Anticipated expiration: 2031-10-27

Abstract

The utility model provides a circuit board and a production device thereof; the circuit board comprises a substrate and a connecting piece, wherein a mounting hole is formed in the side wall of the substrate, the connecting piece is provided with a first connecting part and a second connecting part which are connected, the first connecting part is inserted into the mounting hole in an interference mode, the second connecting part extends out of the mounting hole, and the second connecting part is used for being in adaptive connection with an external mounting structure; the circuit board production device is used for producing the circuit board. The connecting piece of the circuit board provided by the utility model can be in adaptive connection with the mounting structure of the side wall of another circuit board, or the connecting pieces of a plurality of circuit boards provided by the utility model can be correspondingly in adaptive connection with a plurality of mounting structures in the electronic equipment, so that the circuit boards are assembled and combined under the condition of not installing a die or a clamp, therefore, the occupation of the internal space of the electronic equipment can be reduced, the overall cost is reduced, the processing technology and the operation flow can be simplified, and the effect of shortening the production period is achieved.

Description

Circuit board and production device thereof

Technical Field

The utility model belongs to the technical field of electronic elements, and particularly relates to a circuit board and a production device thereof.

Background

The circuit board is a metal circuit board material, belongs to electronic general elements, and has the characteristics of special magnetic permeability, excellent heat dissipation, high mechanical strength, good processing performance and the like.

In order to meet the diversified functional requirements of electronic devices, a plurality of circuit boards are usually combined, and therefore, a special mold or a fixture is required to combine the plurality of circuit boards in the related art. However, the mold or the fixture not only has the disadvantages of large occupied space and high cost, but also is complicated in processing technology and operation because a plurality of circuit boards are combined by the mold or the fixture, and the production period is easily prolonged.

Disclosure of Invention

An embodiment of the present invention provides a circuit board and a manufacturing apparatus thereof, so as to solve the technical problems in the prior art that a large amount of internal space of an electronic device is occupied, the cost is high, and the manufacturing period is long due to the fact that a plurality of circuit boards are combined by using a mold or a fixture.

In order to achieve the purpose, the utility model adopts the technical scheme that: the utility model provides a circuit board, includes base plate and connecting piece, and the lateral wall of base plate is equipped with the mounting hole, and the connecting piece has first connecting portion and the second connecting portion that link to each other with first connecting portion, and first connecting portion interference is pegged graft in the mounting hole, and outside the second connecting portion extended to the mounting hole, the second connecting portion were used for being connected with outside mounting structure adaptation.

In some embodiments, the second connecting portion is provided with a clamping groove, and the second connecting portion is in adaptive clamping connection with an external mounting structure provided with a clamping block through the clamping groove.

In some embodiments, the second connecting portion has a first section extending away from the first connecting portion, and the slot is disposed at an end of the first section away from the first connecting portion.

In some embodiments, the radial dimension of the first section is greater than the diameter of the mounting hole.

In some embodiments, the second connection portion further has a second section connected to an end of the first section facing away from the first connection portion, the second section extending away from the first connection portion, and a radial dimension of the second section being smaller than a radial dimension of the first section.

In some embodiments, the first connecting portion has a third section and a fourth section, the third section is connected with the second connecting portion, the third section is in interference fit with the mounting hole, the fourth section extends away from the third section, and the radial dimension of the fourth section is smaller than that of the mounting hole.

In some embodiments, a plurality of mounting holes are formed in one of the side walls of the substrate at intervals, the circuit board includes a plurality of connectors, and the first connecting portion of each connector is inserted into the corresponding mounting hole in an interference manner.

One or more technical schemes in the circuit board provided by the utility model at least have one of the following technical effects: the connecting piece of the circuit board provided by the utility model can be in adaptive connection with the mounting structure of the side wall of another circuit board, or the connecting pieces of a plurality of circuit boards provided by the utility model can be correspondingly in adaptive connection with a plurality of mounting structures in the electronic equipment, so that the circuit boards are assembled and combined under the condition of not installing a die or a clamp, therefore, the occupation of the internal space of the electronic equipment can be reduced, the overall cost is reduced, the processing technology and the operation flow can be simplified, and the effect of shortening the production period is achieved.

The other technical scheme of the utility model is as follows: the circuit board production device is used for producing the circuit board and comprises a clamp and a pressing piece, wherein the clamp is provided with a clamping position for clamping a substrate, the pressing piece is slidably mounted on the clamp, the pressing piece is provided with a pressing end which is opposite to the clamping position, and the pressing piece can slide along the axis direction of a mounting hole so as to enable the pressing end to press against a second connecting part of the connecting piece, so that a first connecting part of the connecting piece is pressed into the mounting hole.

In some embodiments, the circuit board production device further comprises a support seat mounted on the fixture, the support seat comprises two support rods mounted on the fixture at intervals in parallel and a support plate connected between the two support rods, a connecting hole is formed in the position, opposite to the clamping position, of the support plate, and the pressing piece is slidably arranged through the connecting hole.

In some embodiments, the end surface of the abutting end is provided with a limiting hole, and the limiting hole is used for the second connecting portion to be inserted and connected in a matching manner.

One or more technical schemes in the circuit board production device provided by the utility model at least have one of the following technical effects: the circuit board is used for installing the connecting piece in the installation hole of the side wall of the substrate so as to provide the circuit board which is convenient to assemble and combine.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a schematic front view of a circuit board according to an embodiment of the present invention;

fig. 2 is a schematic top view of a circuit board without a connector according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a connector according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a circuit board production apparatus provided in an embodiment of the present invention;

FIG. 5 is an enlarged view of a portion of FIG. 4 at A;

fig. 6 is a schematic structural diagram of a fixing tool according to an embodiment of the present invention.

Wherein, in the figures, the respective reference numerals:

1. a substrate; 11. mounting holes;

2. a connecting member; 21. a first connection portion; 211. a third stage; 212. a fourth stage; 22. a second connecting portion; 221. a card slot; 222. a first stage; 223. a second stage;

3. an insulating layer;

4. a circuit layer;

5. a clamp; 51. a clamping position; 52. a base; 53. a clamping block;

6. a pressing member; 61. a pressing end; 62. a limiting hole;

7. a support; 71. a strut; 72. a support plate;

8. fixing the smelting tool; 81. a groove; 82. an aluminum plate; 83. and (7) fixing holes.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to fig. 1 to 6 and the embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings, which is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be construed as limiting the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. The features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

Reference in the specification to "one embodiment," "some embodiments," or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the utility model. The appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," or the like in various places in the specification are not necessarily all referring to the same embodiment, but rather "one or more but not all embodiments" unless specifically stated otherwise. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

Referring to fig. 1 to fig. 3, in which fig. 1 is a front view structural diagram of a circuit board according to an embodiment of the present invention, fig. 2 is a top view structural diagram of the circuit board without a connecting element according to an embodiment of the present invention, and fig. 3 is a structural diagram of the connecting element according to an embodiment of the present invention.

As shown in fig. 1 to 3, in an embodiment of the present invention, a circuit board is provided, which includes a substrate 1 and a connector 2, a mounting hole 11 is formed in a side wall of the substrate 1, the connector 2 has a first connection portion 21 and a second connection portion 22 connected to the first connection portion 21, the first connection portion 21 is inserted into the mounting hole 11 in an interference manner, the second connection portion 22 extends out of the mounting hole 11, and the second connection portion 22 is adapted to be connected to an external mounting structure. Specifically, an external mounting structure (not shown) may be disposed on a side wall of another circuit board, and may also be disposed in the electronic device, such as an inner wall of the electronic device or a mounting platform in the electronic device.

The connecting piece 2 of the circuit board that this embodiment provided can correspond the adaptation with the mounting structure adaptation of another circuit board lateral wall, perhaps each connecting piece 2 of the circuit board that a plurality of this embodiments provided can correspond the adaptation with a plurality of mounting structure in the electronic equipment and be connected, and then make a plurality of circuit boards assemble the combination under the condition of not installing mould or anchor clamps, consequently, can not only reduce the occupation to electronic equipment inner space, reduce overall cost, can also simplify processing technology and operation flow, and then reach the effect that shortens production cycle.

Further, in the present embodiment, the connecting member 2 is a metal member, such as a copper connecting member.

Because the metal material has the characteristics of easy processing, corrosion resistance and the like, the connecting piece 2 made of the metal material has the advantages of low manufacturing cost and long service life.

Further, in this embodiment, the circuit board further includes an insulating layer 3 and a circuit layer 4, where the insulating layer 3 is connected to the substrate 1, and the circuit layer 4 is connected to a surface of the insulating layer 3 away from the substrate 1.

The substrate 1 is a metal substrate and comprises an aluminum substrate, a copper substrate or an iron substrate; the circuit layer 4 is a copper foil. In addition, the circuit board can be provided with one or more insulating layers 3 and one or more circuit layers 4 according to the actual use requirement.

Further, in the present embodiment, the depth of the mounting hole 11 on the side wall of the substrate 1 is 6mm to 8mm, and specifically, may be 6mm, 6.5mm, 7mm, 7.5mm, or 8 mm.

In the actual in-service use of production, need set up the trompil degree of depth according to the actual size of base plate 1 under the prerequisite of guaranteeing first connecting portion 21 and mounting hole 11 connection stability rationally, avoid the trompil too deeply can cause harmful effects to base plate 1's wholeness ability.

Referring to fig. 1 to 3, in another embodiment of the present invention, the second connecting portion 22 is provided with a locking groove 221, and the second connecting portion 22 is locked to the external mounting structure provided with a locking block through the locking groove 221.

The clamping block is an elastic piece, and the size of the clamping block is slightly larger than that of the clamping groove 221, so that the clamping block can deform and tighten in the clamping groove 221, and the clamping connection of the clamping block and the clamping groove is realized; in addition, the second connecting portion 22 and the external mounting structure are connected through the clamping of the clamping groove 221 and the clamping block, and the clamping device has the advantages of being convenient to operate and simple in structure.

Referring to fig. 1 to 3, in another embodiment of the present invention, the second connecting portion 22 has a first section 222 extending away from the first connecting portion 21, and the slot 221 is disposed at an end of the first section 222 away from the first connecting portion 21. Specifically, the external mounting structure is configured as a first insertion hole capable of being inserted into the first section 222 in a matching manner, and the fixture block is disposed in the first insertion hole.

The second connecting portion 22 of the circuit board provided in this embodiment is inserted into the first inserting hole through the first section 222, and then the clamping groove 221 on the first section 222 is clamped to the clamping block in the first inserting hole, so that the circuit board provided in this embodiment is adapted to the external mounting structure. The first section 222 is inserted into the first insertion hole to increase the connection area between the circuit board and the external mounting structure, so as to improve the connection stability.

Referring to fig. 1 to 3, in another embodiment of the present invention, the radial dimension of the first section 222 is larger than the diameter of the mounting hole 11.

Further, in the present embodiment, the diameter of the first section 222 is 0.5-2.5mm larger than the diameter of the mounting hole 11.

In the present embodiment, when the first connecting portion 21 is installed in the installation hole 11, since the diameter of the first section 222 is larger than the diameter of the installation hole 11, when the first section 222 contacts with the head end of the installation hole 11, it means that the first connecting portion 21 is accurately installed in the installation hole 11.

Referring to fig. 1 to 3, in another embodiment of the present invention, the second connecting portion 22 further has a second section 223 connected to an end of the first section 222 away from the first connecting portion 21, the second section 223 extends away from the first connecting portion 21, and a radial dimension of the second section 223 is smaller than a radial dimension of the first section 222. Specifically, the external mounting structure further includes a second insertion hole communicating with the insertion hole and adapted to be inserted into the second section 223.

When the second connecting portion 22 of the circuit board provided by the embodiment is connected with the external mounting structure in an adaptive manner, the second section 223 is firstly plugged into the second plugging hole in an adaptive manner, the possibility that the second connecting portion 22 slides out of the external mounting structure can be reduced in the plugging of the first section 222 and the first plugging hole and the clamping process of the clamping groove 221 and the clamping block, and the stability and accuracy of the assembling process are ensured.

Referring to fig. 1 to 3, in another embodiment of the present invention, the first connection portion 21 has a third section 211 and a fourth section 212 connected to the third section 211, the third section 211 is connected to the second connection portion 22, the third section 211 is inserted into the mounting hole 11 in an interference manner, the fourth section 212 extends away from the third section 211, and a radial dimension of the fourth section 212 is smaller than a dimension of the mounting hole 11. Specifically, the third section 211 and the mounting hole 11 are in a slight interference relationship with an interference of 0-0.05 mm.

When the first connecting portion 21 of the circuit board provided by this embodiment is connected with the mounting hole 11 in an adaptive manner, the third section 211 enters the mounting hole 11 first, and in the interference inserting process of the fourth section 212 and the mounting hole 11, the possibility that the first connecting portion 21 slides out from the mounting hole 11 can be reduced, and the stability and accuracy of the assembling process are ensured.

Referring to fig. 1 to 3, in another embodiment of the present invention, a plurality of mounting holes 11 are spaced apart from one sidewall of a substrate 1, a circuit board includes a plurality of connectors 2, and a first connecting portion 21 of each connector 2 is inserted into the corresponding mounting hole 11 in an interference manner.

The circuit board that this embodiment provided forms the multiple spot with outside mounting structure through a plurality of connecting pieces 2 and is connected, and then reaches the purpose that improves connection stability.

Further, in this embodiment, the substrate 1 is a square plate, two ends of one side wall of the square plate are respectively provided with the mounting hole 11, the circuit board includes two connectors 2, and the first connecting portions 21 of the two connectors 2 are inserted into the mounting holes 11 corresponding thereto in an interference manner.

Mounting hole 11 and connecting piece 2 locate the both ends of a square board lateral wall, have maximize the distance between two tie points, can prevent that base plate 1 from taking place to rock around the tie point under self action of gravity, have improved the stability of assembling of circuit board.

It is understood that, in the present embodiment, the side walls of the substrate 1 can be provided with mounting holes 11 (not shown in the figure), the circuit board includes a plurality of connectors 2, and the first connecting portion 21 of each connector 2 is inserted into the corresponding mounting hole 11 by interference. When the external mounting structure is disposed on the side walls of other circuit boards, the circuit boards can be assembled on multiple sides of the circuit board provided in this embodiment through the plurality of mounting holes 11 on the substrate 1 provided in this embodiment.

Referring to fig. 4, fig. 4 is a schematic structural diagram of a circuit board production apparatus according to an embodiment of the present invention.

As shown in fig. 1 to 4, another embodiment of the present invention further provides a circuit board production apparatus for producing the circuit board, the circuit board production apparatus includes a fixture 5 and a pressing member 6, the fixture 5 is provided with a clamping position 51 for clamping the substrate 1, the pressing member 6 is slidably mounted on the fixture 5, the pressing member 6 has a pressing end 61 opposite to the clamping position 51, and the pressing member 6 can slide along the axial direction of the mounting hole 11 to press the pressing end 61 against the second connecting portion 22 of the connecting member 2, so as to press the first connecting portion 21 of the connecting member 2 into the mounting hole 11. In particular, the press element 6 can be slidably connected directly to the clamp 5, or can be slidably connected to other structures connected to the clamp 5, i.e. indirectly to the clamp 5.

The circuit board production device provided by the utility model is used for mounting the connecting piece 2 in the mounting hole 11 on the side wall of the substrate 1 so as to provide a circuit board convenient to assemble and combine.

Referring to fig. 4, in another embodiment of the present invention, the circuit board production apparatus further includes a support 7 installed on the fixture 5, the support 7 includes two support rods 71 installed on the fixture 5 in parallel at intervals and a support plate 72 connected between the two support rods 71, a connection hole 73 is formed in a position of the support plate 72 facing the clamping position 51, and the pressing member 6 is slidably inserted through the connection hole 73.

Therefore, the support 7 is connected with the clamp 5, and the pressing piece 6 is directly connected with the support plate 72 of the support 7 in a sliding mode, so that the pressing piece 6 is indirectly connected with the clamp 5 in a sliding mode, the connecting structure is simple, and the assembly is convenient. After assembly, the pressing member 6 can be slidably connected to the connecting hole 73, so that the pressing member 6 can slide along the axial direction of the mounting hole 11, and the pressing end 61 can press the first connecting portion 21 of the connecting member 2 into the mounting hole 11.

Further, in the present embodiment, the connection hole 73 is provided as a screw hole, and the pressing member 6 is a screw.

The connecting hole 73 and the pressing piece 6 are in threaded connection, so that the structure is simple, the manufacturing cost is low, and the assembly is convenient; in addition, the process that the pressing end 61 of the pressing piece 6 slides along the axial direction of the mounting hole 11 is realized through the relative rotation of the screw rod and the threaded hole, and the operation is convenient.

Further, in the present embodiment, the rod 71 is provided as a screw, and the rod 71 is connected to the plate 72 by a screw.

Because one end of the supporting rod 71 is fixedly connected to the fixture 5, the supporting rod 71 which is a screw rod is rotated relative to the supporting plate 72, and the distance between the supporting plate 72 and the clamping position 51 and the pressing piece 6 on the supporting plate 72 can be shortened, so that when the pressing piece 6 is used for extruding the connecting piece 2, the working stroke and the assembling time can be saved.

Further, in this embodiment, the fixture 5 further includes a base 52 and a pair of clamping blocks 53, the pair of clamping blocks 53 are symmetrically connected to the base 52, and the clamping position 51 is located between the pair of clamping blocks 53; the two support rods 71 of the support 7 are correspondingly connected to a pair of clamping blocks 53.

Please refer to fig. 5, wherein fig. 5 is a partially enlarged view of a portion a in fig. 4.

As shown in fig. 4 and 5, in another embodiment of the present invention, a limiting hole 62 is disposed on an end surface of the pressing end 61, and the limiting hole 62 is used for the second connecting portion 22 to be adapted and inserted.

When utilizing to support to press end 61 to extrude second connecting portion 22, through the grafting of spacing hole 62 and second connecting portion 22, can not only prevent to support to press end 61 and connecting piece 2 to take place the dislocation and then cause the component damage under the effect of power, can also improve the assembly accuracy of connecting piece 2 and mounting hole 11.

Please refer to fig. 6, wherein fig. 6 is a schematic structural diagram of a fixing jig according to the present invention.

As shown in fig. 1 to 6, a production process of a circuit board according to another embodiment of the present invention is as follows:

s1: firstly, a single-sided substrate is manufactured according to a conventional process.

S2: and (3) milling the appearance, namely milling the plate into a single substrate 1 with a fixed shape by using a numerical control machine.

S3: sticking protective films, sticking the protective films on two sides of the substrate 1, and then manually cutting off the redundant protective films on the substrate 1 by using a blade to ensure that the protective films are consistent with the appearance of the substrate 1; carry out the pad pasting to base plate 1 to scratch base plate 1 when preventing to block base plate 1 in recess 81 of fixed tool 8, simultaneously, can also increase the whole thickness of base plate 1, make base plate 1 set up in fixed tool 8 more stably.

The method for manufacturing the fixing jig 8 comprises the following steps: taking an aluminum plate 82 with the thickness of 3.0mm, milling a plurality of grooves 81 for fixing the substrate 1 in the middle of the aluminum plate 82, wherein the length of each groove 81 is 0.05mm greater than that of the substrate 1, the width of each groove 81 is 0.05mm greater than that of the substrate 1, and fixing holes 83 are drilled at four corners of the aluminum plate 82.

S4: drill out mounting hole 11, be connected with the fixed orifices 83 on four angles of pin and aluminum plate 82 earlier, rethread pin will fix fixed tool 8 on the table surface of machine, treat a plurality of base plates 1 and treat 1 piece of base plate of drilling and vertically insert in fixed tool 8's recess 81, set for the depth of boring down to locating hole on the fixed tool 8 is the datum point, drills at the lateral wall of base plate 1.

Drilling on the side wall of the substrate 1 by using drilling equipment with a depth control function; the drill is 0.05mm smaller than the diameter of the third section 211 of the connecting piece 2; the depth of the mounting hole 11 is greater than the length of the first connection portion 21.

S5: installing the connecting piece 2 on the substrate 1, vertically placing the substrate 1 with the drilled mounting hole 11 on the clamping position 51 between the pair of clamping blocks 53, placing the side wall of the substrate 1 with the drilled mounting hole 11 upward, installing the fourth section 212 of the first connecting part 21 into the mounting hole 11, moving the pressing piece 6 downwards along the axis of the mounting hole 11, inserting the limiting hole 62 into the second section 223 of the second connecting part 22, and continuing to move the pressing piece 6 downwards along the axis of the mounting hole 11, so that the third section 211 of the first connecting part 21 is inserted into the mounting hole 11 in an interference manner.

S6: the protective films on both sides of the substrate 1 are torn off.

S7: and (4) cleaning, namely cleaning the surface dirt of the substrate 1 through a horizontal cleaning line.

S8: and (4) checking, namely checking in a conventional manner, and paying attention to checking whether the connecting piece 2 is skewed or not.

S9: and (6) packaging.

S10: and (7) discharging.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. A circuit board, characterized by: the connecting piece is provided with a first connecting portion and a second connecting portion connected with the first connecting portion, the first connecting portion is in interference insertion connection with the inside of the mounting hole, the second connecting portion extends to the outside of the mounting hole, and the second connecting portion is used for being in adaptive connection with an external mounting structure.

2. The circuit board of claim 1, wherein: the second connecting portion are provided with clamping grooves, and the second connecting portions are connected with the outer clamping blocks in an adaptive mode through the clamping grooves in a clamping mode.

3. The circuit board of claim 2, wherein: the second connecting portion have deviate from the first section that first connecting portion extended, the draw-in groove is located first section deviates from the one end of first connecting portion.

4. The circuit board of claim 3, wherein: the radial dimension of the first section is greater than the diameter of the mounting hole.

5. The circuit board of claim 4, wherein: the second connecting portion still have with the first section deviates from the second section that the one end of first connecting portion links to each other, the second section deviates from first connecting portion extends, just the radial dimension of second section is less than the radial dimension of first section.

6. The circuit board of claim 3, wherein: the first connecting portion is provided with a third section and a fourth section connected with the third section, the third section is connected with the second connecting portion, the third section is in interference insertion connection with the mounting hole, the fourth section extends away from the third section, and the radial size of the fourth section is smaller than that of the mounting hole.

7. The circuit board of any one of claims 1-6, wherein: one of the side walls of the substrate is provided with a plurality of mounting holes at intervals, the circuit board comprises a plurality of connecting pieces, and the first connecting part of each connecting piece is inserted into the corresponding mounting hole in an interference manner.

8. A circuit board production device is characterized in that: the circuit board production device is used for producing the circuit board according to any one of claims 1 to 7, and comprises a clamp and a pressing piece, wherein the clamp is provided with a clamping position for clamping the substrate, the pressing piece is slidably mounted on the clamp, the pressing piece is provided with a pressing end opposite to the clamping position, and the pressing piece can slide along the axial direction of the mounting hole to enable the pressing end to press against the second connecting part of the connecting piece, so that the first connecting part of the connecting piece is pressed into the mounting hole.

9. The circuit board production apparatus according to claim 8, wherein: the circuit board production device further comprises a support arranged on the clamp, the support comprises two support rods arranged on the clamp at intervals in parallel and a support plate connected between the two support rods, a connecting hole is formed in the position, opposite to the clamping position, of the support plate, and the pressing piece penetrates through the connecting hole in a sliding mode.

10. The circuit board production apparatus according to claim 8, wherein: the end face of the abutting end is provided with a limiting hole, and the limiting hole is used for the second connecting portion to be in adaptive insertion connection.