A split type pressure needle for photovoltaic module welding machine

Abstract

The present disclosure describes a split-type pressure needle for a photovoltaic module welding machine, which includes: a pressure needle rod, one end of which is used to be installed on a pressure needle bracket of the welding machine, and the other end of the pressure needle rod is provided with a plug connector; and a pressure needle head, the pressure needle head is provided with a seat to be plugged into the plug connector of the pressure needle rod, wherein the pressure needle head includes a core layer and a nitrided surface layer, and the nitrided surface layer at least partially covers the core layer.

Description

Technical Field

[0001] The present invention relates to the field of solar photovoltaic module manufacturing, and in particular to a split-type pressing needle for a photovoltaic module welding machine. Background Art

[0002] At present, photovoltaic module welding machines mostly use ceramic pressure pins. A row of pressure pins are arranged under the welding head, which is not conducive to disassembly and maintenance. In addition, the material is brittle and not tough enough. The pressure pins are brittle and easy to break during the cleaning process. The cleaning time is 4 hours each time. A single welding machine contains about 280 pressure pins. Ceramic pressure pins are prone to frequent breakage during the cleaning process. If the ceramic pressure pins are not replaced or replenished in time, batch cold welding will occur, affecting product quality.

[0003] For this type of cold soldering phenomenon, when the ceramic press pin breaks, replacing the broken ceramic press pin requires disassembling the press pin cylinder, press pin bracket, press pin cover, press pin rod and press pin guide column. The average time for disassembly and replacement is about 30 minutes. The ceramic press pin has a short service life and breaks frequently. The equipment personnel waste a lot of time and manpower to replace the ceramic press pin every day, and the cost of ceramic press pin is relatively high. Utility Model Content

[0004] In order to at least partially solve the problem of time-consuming replacement of ceramic pressure pins caused by frequent breakage, the utility model provides a split pressure pin for a photovoltaic module welding machine, which includes: a pressure pin rod, one end of which is used to be installed on the pressure pin bracket of the welding machine, and the other end is provided with a plug connector; and a pressure pin head, which is provided with a plug-in receptacle to be plugged into the plug connector of the pressure pin rod, wherein the pressure pin head includes a core layer and a nitrided surface layer, and the nitrided surface layer at least partially covers the core layer.

[0005] Alternatively, in some embodiments, at least one annular groove is provided in the outer surface of the press needle rod.

[0006] Alternatively, in some embodiments, the length of the pressure needle rod is 60-80 mm, the diameter is 1.5-2.5 mm, the length of the pressure needle head is 8-15 mm, and the diameter of the pressure needle head is 3.5-4.5 mm.

[0007] Alternatively, in some embodiments, the length of the pressure needle rod is 70.2 mm and the diameter is 2 mm, the length of the pressure needle head is 11 mm and the diameter of the pressure needle head is 4 mm.

[0008] Alternatively, in some embodiments, the press needle rod is fixed to the welding machine via a snap ring mounted in an annular groove of the press needle rod.

[0009] Alternatively, in some embodiments, the pressing needle rod and the pressing needle head are made of stainless steel to reduce the probability of the pressing needle breaking and reduce the cost of replacing the pressing needle.

[0010] The pressing needle provided by the present disclosure can realize the rapid replacement of the pressing needle head by providing a detachably installed pressing needle rod and a pressing needle head, thereby shortening the maintenance time. The pressing needle head is provided with a nitriding surface layer, so that the pressing needle head has the advantages of high temperature resistance, wear resistance, and tin resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 A schematic structural diagram of a ceramic pressing needle according to the prior art is shown;

[0012] Figure 2 shows a side plan view of a press needle according to the present disclosure;

[0013] Figure 3 A side plan view of a press needle rod of a press needle according to the present disclosure is shown;

[0014] Figure 4 A side plan view of a pressing needle head of a pressing needle according to the present disclosure is shown;

[0015] Figure 5 A side plan view of a clamping spring of a press needle head of a press needle according to the present disclosure is shown. DETAILED DESCRIPTION

[0016] The split-type pressure needle for photovoltaic module welding machine disclosed in the utility model is further described in detail below in combination with the accompanying drawings and specific embodiments. The advantages and features of the utility model will become clearer according to the following detailed description and claims. It should be noted that the accompanying drawings are in a very simplified form and use non-precise ratios, which are only used for the purpose of conveniently and clearly assisting in explaining the embodiments of the utility model.

[0017] Figure 1 A ceramic press pin according to the prior art is shown, which is made of a ceramic material in one piece.

[0018] Reference Figures 2 to 5 , describing a split-type pressing needle for a photovoltaic module welding machine according to the present disclosure.

[0019] The present disclosure provides a split type pressure needle for a photovoltaic module welding machine, which comprises a pressure needle rod 1 and a pressure needle head 2.

[0020] The pressure needle rod 1 is implemented as an elongated cylindrical rod, one end of which is used to be mounted on the pressure needle bracket (not shown) of the welding machine, and the other end is provided with a plug connector 11. The plug connector 11 has a diameter smaller than the diameter of the main body of the pressure needle rod 1 and can be implemented separately from the main body of the pressure needle rod 1 or integrally.

[0021] The length of the pressing needle rod 1 can be in the range of 60-80 mm, and the diameter can be in the range of 1.5-2.5 mm. Preferably, the length of the pressing needle rod 1 is 70.2 mm, and the diameter is 2 mm.

[0022] At least one annular groove 12 is provided in the outer surface of the pressure needle rod 1. In particular, in the specific embodiment shown in the accompanying drawings, two annular grooves 12 are provided in the outer surface of the pressure needle rod 1. The annular grooves 12 can be arranged at the 11mm and 19.5mm positions of the pressure needle rod 1 (from the end face of the pressure needle bracket for installation to the welding machine). The annular grooves 12 are arranged around all or part of the periphery of the pressure needle rod 1. The arrangement of the annular grooves 12 is that the pressure needle rod 1 can be fixed to the welding machine via the retaining spring 3 installed in the annular groove 12 of the pressure needle rod 1, and can be easily detached from the retaining spring 3 under the operation of the user.

[0023] The pressing needle head 2 is implemented in a cylindrical shape, and one end of the pressing needle head is provided with a plug-in seat 21 for plugging into the plug connector 11 of the pressing needle rod 1. The pressing needle head 2 can be provided with a stepped pressing head.

[0024] The length of the pressure needle 2 (pressure head) can be in the range of 8-15mm, and the diameter of the pressure needle 2 (pressure head) can be in the range of 3.5-4.5mm. Preferably, the length of the pressure needle is 11mm, and the diameter of the pressure needle is 4mm.

[0025] Alternatively, in some embodiments, the pressing needle rod 1 and the pressing needle head 2 are made of stainless steel.

[0026] The pressure needle head 2 can be constructed to include a core layer (stainless steel core layer) and a nitrided surface layer, and the nitrided surface layer at least partially or completely covers the core layer. The nitrided surface layer forms a surface for contact, so that the pressure needle head 2 has the characteristics of high temperature resistance, wear resistance, and anti-tin adhesion. In particular, the nitrided surface layer of the pressure needle head 2 can be obtained by a partial or full surface nitriding process of the pressure needle head 2. The thickness of the nitrided surface layer can be between 1 / 1000 and 1 / 100, between 1 / 100 and 1 / 50, or between 1 / 50 and 1 / 20, or between 1 / 20 and 1 / 10, or between 1 / 10 and 1 / 5, or between 1 / 5 and 1 / 3 of the thickness of the pressure needle head 2.

[0027] By providing a split press pin for a photovoltaic module welding machine according to the present invention, it is unnecessary to disassemble the press pin bracket or replace the press pin rod after the press pin is worn. Instead, only the press pin head needs to be replaced. The replacement time is shortened from 30 minutes / time to 2 minutes / time, and the cleaning frequency is reduced from the original 4 hours to once every 12 hours.

[0028] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0029] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0030] As used in this disclosure and the appended claims, the singular forms "a", "an", "said", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0031] Obviously, those skilled in the art can make various changes and modifications to the split-type pressure pin for photovoltaic module welding machine disclosed in the utility model without departing from the spirit and scope of the utility model. Thus, if these modifications and variations of the utility model fall within the scope of the claims of the utility model and their equivalents, the utility model is also intended to include these modifications and variations.

Claims

1. A split type pressure needle for a photovoltaic module welding machine, characterized in that: include: A pressure needle rod, one end of which is used to be mounted on a pressure needle bracket of the welding machine, and the other end of which is provided with a plug connector; and A needle pressing head, wherein the needle pressing head is provided with a plug-in receptacle for plugging into the plug connector of the needle pressing rod; Wherein, the pressing needle head comprises a core layer and a nitrided surface layer, and the nitrided surface layer at least partially covers the core layer.

2. The split type pressing needle according to claim 1, characterized in that: At least one annular groove is arranged in the outer surface of the needle pressing rod.

3. The split type pressing needle according to claim 1, characterized in that: The length of the pressure needle rod is 60-80 mm, and the diameter is 1.5-2.5 mm. The length of the pressure needle head is 8-15 mm, and the diameter of the pressure needle head is 3.5-4.5 mm.

4. The split type pressing needle according to claim 3, characterized in that: The length of the pressure needle rod is 70.2 mm and the diameter is 2 mm. The length of the pressure needle head is 11 mm and the diameter of the pressure needle head is 4 mm.

5. The split type pressing needle according to claim 1, characterized in that: The pressure needle rod is fixed to the welding machine via a clamping spring installed in an annular groove of the pressure needle rod.

6. The split type pressing needle according to any one of claims 1 to 5, characterized in that: The pressing needle rod and the pressing needle head are made of stainless steel.

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