Punching assembly and perforated adhesive tape preparation mechanism

Abstract

The utility model relates to the technical field of photovoltaic assembly production, in particular to a punching assembly and a perforated adhesive tape preparation mechanism. The punching mechanism comprises an upper die base, a pressing plate, a lower die base and a needle base which are sequentially arranged from top to bottom, the upper die base, the pressing plate and the needle base can move up and down relative to the lower die base, the upper die base is provided with a punch, the pressing plate is provided with an avoiding hole allowing the punch to penetrate through, the lower die base is provided with a discharging hole corresponding to the punch, the needle base is vertically provided with an ejector pin, and a punching face of the punch is provided with a needle hole. And the ejector pin is opposite to the pin hole. During punching, the conical needle tip of the ejector pin can pierce the waste materials, and the waste materials can be left on the ejector pin. According to the perforated adhesive tape preparation mechanism, the punching assembly is used, waste materials cannot adhere to the punch in the punching process, the pressing plate and the punch are driven by the air cylinder, the structure is simple, and practicability is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to photovoltaic module production technical field, concretely relates to a punching assembly and take hole adhesive tape preparation mechanism. BACKGROUND

[0002] The full-screen photovoltaic module is made of back contact cell, the back of the back contact cell is distributed with positive grid line and negative grid line, the welding band connected with the positive grid line is positive welding band, the welding band connected with the negative grid line is negative welding band, and the bus bar is welded with the positive welding band or the negative welding band. When welding the bus bar, first, lay the insulating film strip on the back of the cell string, then lay the bus bar on the insulating film strip, the insulating film strip is provided with a row of through holes, the through holes make the positive welding band or the negative welding band exposed, and then make the positive welding band or the negative welding band contact with the bus bar.

[0003] The insulating film strip is a double-layer film strip, wherein the lower layer is a hot melt adhesive layer and is adhered to the cell, and the upper layer is an insulating layer and plays an insulating role. In the laminating process, it is difficult for the filled film to completely fill the gap between the insulating layer and the bus bar after melting, so that the produced photovoltaic module has air bubbles, and the quality of the photovoltaic module is reduced. In order to solve the problem of air bubbles, the insulating film strip uses a three-layer film strip, that is, the upper layer and the lower layer are hot melt adhesive layers, and the middle layer is an insulating layer. The through holes on the insulating film strip are punched by a punching mechanism, and during the continuous punching process, the punch will heat up, and the waste insulating film strip is easy to stick to the punch, and manual cleaning is required. SUMMARY

[0004] To solve the above technical problems, the utility model provides the following scheme:

[0005] On the one hand, the utility model provides a kind of punching assembly, comprising: upper die holder, pressing plate, lower die holder and needle seat are sequentially arranged from top to bottom, the upper die holder, the pressing plate and the needle seat can be up and down active relative to the lower die holder, the upper die holder is equipped with punch, the pressing plate is equipped with the hole for avoiding that the punch passes through, the lower die holder is equipped with the hole for unloading that the punch corresponds, the needle seat is vertically equipped with thimble, the punch is equipped with needle hole, the thimble is directly opposite with the needle hole.

[0006] Further, the lower die holder and the needle seat are further equipped with baffle, the baffle is equipped with the guide hole for the thimble to pass through, one side of the baffle is equipped with air blowing plate, the air blowing plate is equipped with the air blowing hole that air blows to obliquely upper side, the air blowing hole is towards the top end of the guide hole.

[0007] Further, the punch, the hole for avoiding, the hole for unloading and the thimble are linearly spaced with multiple, and are one-to-one correspondingly arranged.

[0008] Further, the lower die base top surface and both sides of the discharge hole are provided with a baffle, and the opposite side walls of the two baffles form a groove with the top surface of the lower die base.

[0009] Further, the ejector pin comprises a first segment and a second segment, the top end of the first segment is a conical needle tip, the bottom end of the second segment is fixed on the needle seat, and the shaft diameter of the first segment is smaller than that of the second segment.

[0010] In another aspect, the utility model provides a kind of hole adhesive tape preparation mechanism, comprising: lifting plate, fixed plate, first driving part, second driving part and punching assembly, the lifting plate is located above the fixed plate, the upper die base is set in the bottom of the lifting plate, the lower die base is set on the fixed plate, the first driving part is driven connection with the lifting plate to drive the lifting plate up and down movement, the second driving part is driven connection with the needle seat to drive the needle seat up and down movement, the pressing plate is fixed with several adjusting shafts, the top end of the adjusting shaft passes from below and upwards the lifting plate and is locked with locking block, spring is sheathed on the adjusting shaft, and the two ends of the spring are abutted with the lifting plate and the pressing plate.

[0011] Further, the hole adhesive tape preparation mechanism further comprises a mounting plate located above the lifting plate, the mounting plate and the fixed plate are connected by a guide column, the lifting plate is sleeved on the guide column, the first driving part is arranged on the mounting plate, and the first driving part is a gas cylinder.

[0012] Further, the second driving part is arranged at the bottom of the fixed plate, the second driving part is driven connected with the needle seat by a connecting rod, and the second driving part is a gas cylinder.

[0013] Further, the number of the punching assembly is 1-3.

[0014] Further, the number of the punching assembly is two, and the punching positions of the two punching assemblies are staggered.

[0015] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0016] The punching assembly provided by the utility model, when the upper die base moves downward, the punch stretches into the discharge hole to form a through hole on the insulation film strip, before punching, the ejector pin moves into the discharge hole and approaches the insulation film strip, when the punch cuts off the waste material and continuously moves downward, the conical needle tip of the ejector pin pierces the waste material and enters the pinhole, when the punch moves upward, the waste material will be left on the ejector pin due to friction, so that the problem that the waste material is easy to stick on the punch is solved.

[0017] The utility model provides a perforated tape preparation mechanism that uses the punching assembly, so that waste materials will not adhere to the punch during punching. The pressing plate and the punch are driven by a common cylinder, and the structure is simple and the practicability is strong. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the partial structure of the insulating film strip after punching in the utility model;

[0019] Figure 2 This is the front view of the punching assembly of the utility model;

[0020] Figure 3 This utility model Figure 2 A cross-sectional view of the punching assembly in the CC direction;

[0021] Figure 4 This utility model Figure 3 Magnified view of area A in the middle;

[0022] Figure 5 It is a three-dimensional diagram of the air blowing plate in the utility model;

[0023] Figure 6 It is a three-dimensional diagram of the preparation mechanism of the perforated tape of the utility model;

[0024] Figure 7 This is a front view of the utility model's perforated tape preparation mechanism;

[0025] Figure 8 It is a schematic diagram of the connection relationship between the lifting plate and the pressing plate in the utility model.

[0026] Among them: 110, upper die base; 120, punch; 121, pinhole; 130, pressure plate; 131, avoidance hole; 140, lower die base; 141, baffle; 142, discharge hole; 150, baffle; 151, guide hole; 160, blowing plate; 161, blowing hole; 170, ejector; 171, first section; 172, second section; 180, needle seat; 210, lifting plate; 211, adjusting shaft; 212, locking block; 213, spring; 220, fixing plate; 230, mounting plate; 240, first driving member; 250, second driving member; 260, guide column; 270, connecting rod; 300, insulating film strip; 310, through hole. DETAILED DESCRIPTION

[0027] The technical solution and technical effects of the present invention are further described in detail below in conjunction with the accompanying drawings of the present invention.

[0028] In the description of the utility model, unless another definite provision and limitation, the term "connect", "connection", "fixed" should be broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integral; can be direct connection, also can pass through intermediate medium indirectly connect, can be two element inside's intercommunication or two element's mutual action relation. For ordinary skilled person in the art, the above-mentioned term can be understood in the utility model with specific meaning. It also needs to be explained that in this paper, such relationship terms as "first" and "second" are only used to distinguish the first feature from the second feature, and do not necessarily require or imply any such actual relationship or order between the features.

[0029] The structure of the insulation film strip 300 used in the full-screen photovoltaic module is as shown in Figure 1 A plurality of through holes 310 are linearly distributed on the insulation film strip 300, and the upper surface and the lower surface of the insulation film strip 300 have hot melt adhesive layers.

[0030] As shown in Figures 1-4 The utility model provides a punch assembly for punching on the insulation film strip 300, which comprises, from top to bottom, an upper die holder 110, a pressing plate 130, a lower die holder 140 and a needle holder 180, the upper die holder 110, the pressing plate 130 and the needle holder 180 can move up and down relative to the lower die holder 140, the upper die holder 110 is provided with a punch 120, the pressing plate 130 is provided with a relief hole 131 through which the punch 120 passes, the lower die holder 140 is provided with a discharge hole 142 corresponding to the punch 120, the needle holder 180 is vertically provided with a thimble 170, the punch 120 is provided with a needle hole 121 on the cutting surface, and the thimble 170 is opposite to the needle hole 121.

[0031] When working, the insulation film strip 300 is placed on the lower die holder 140, the needle holder 180 is moved upward to move the thimble 170 into the discharge hole 142, the conical needle tip approaches the bottom surface of the insulation film strip 300, the pressing plate 130 first presses the insulation film strip 300 to fix it, the upper die holder 110 is moved downward to make the punch 120 punch and cut the insulation film strip 300 to form the through hole 310, after the punch 120 enters the discharge hole 142, the waste material punched off on the insulation film strip 300 is pressed by the punch 120 towards the thimble 170, the conical needle tip pierces the waste material and enters the needle hole 121, then the upper die holder 110 drives the punch 120 to move upward, at this time, the waste material is left on the thimble 170. When cleaning the waste material on the thimble 170, the needle holder 180 is moved downward to move the thimble 170 out of the discharge hole 142, which facilitates the cleaning of the waste material. Even if the punch 120 has been working for a period of time and the temperature rises, causing the waste material to have slight stickiness, since the thimble 170 pierces the waste material, the friction generated when the waste material is removed from the thimble 170 is sufficient to separate the waste material from the punch 120.

[0032] In combination with Figure 5In the embodiment, the lower die seat 140 and the needle seat 180 are further provided with a baffle 150, the baffle 150 is provided with a guide hole 151 through which the ejector pin 170 passes, one side of the baffle 150 is provided with a blowing plate 160, the blowing plate 160 is provided with a blowing hole 161 for blowing air obliquely upwards, and the blowing hole 161 is directed to the top end of the guide hole 151. When the lower die seat 140 moves downward and the tapered needle tip of the ejector pin 170 is withdrawn into the guide hole 151, the waste is separated from the ejector pin 170 under the blocking action of the baffle 150 and is left on the baffle 150, then the blowing hole 161 blows air to the waste from the oblique lower direction of the waste, and the waste can be blown away from the baffle 150 to automatically clean the waste on the ejector pin 170. When the waste is separated from the ejector pin 170 and supported by the baffle 150, the end of the waste close to the blowing plate 160 extends out of the baffle 150, so that the waste can be blown away from the baffle 150.

[0033] In the embodiment, the punch 120, the avoiding hole 131, the discharge hole 142 and the ejector pin 170 are linearly and spacedly provided with a plurality of holes, and are one-to-one corresponding, that is, a plurality of through holes 310 can be formed on the insulating film strip 300 at one time to improve the punching efficiency.

[0034] In the embodiment, the top surface of the lower die seat 140 and the two sides of the discharge hole 142 are provided with a baffle 141, and the opposite side walls of the two baffles 141 form a groove with the top surface of the lower die seat 140. The insulating film strip 300 is located in the groove, and the groove can limit the insulating film strip 300 to prevent the insulating film strip 300 from deviating. The baffle 141 is detachably connected with the lower die seat 140, the distance between the two baffles 141 is adjustable, and the baffle 141 is suitable for punching on insulating film strips 300 with different widths. In other embodiments of the utility model, the baffle 141 and the lower die seat 140 can also be an integral structure.

[0035] In the embodiment, the ejector pin 170 comprises a first section body 171 and a second section body 172 connected with each other, the top end of the first section body 171 is a tapered needle tip, the bottom end of the second section body 172 is fixed on the needle seat 180, and the shaft diameter of the first section body 171 is smaller than the shaft diameter of the second section body 172. The first section body 171 is relatively thin, facilitating the piercing of the waste, and the second section body 172 is relatively thick and is not easy to be bent. In other embodiments of the utility model, the main body of the ejector pin 170 is uniform in thickness, and the top end is a tapered needle tip.

[0036] As Figures 6-8As shown, the utility model also provides a kind of hole adhesive tape preparation mechanism, it include: lifting plate 210, fixed plate 220, first driving part 240, second driving part 250 and punch assembly, lifting plate 210 is located the top of fixed plate 220, upper die holder 110 is set in the bottom of lifting plate 210, lower die holder 140 is set on fixed plate 220, first driving part 240 is driven to connect with lifting plate 210 to drive lifting plate 210 to move up and down, second driving part 250 is driven to connect with needle holder 180 to drive needle holder 180 to move up and down, several adjusting shafts 211 are fixed on pressing plate 130, the top end of adjusting shaft 211 is from below and upwards through lifting plate 210 and is locked with locking block 212, spring 213 is sleeved on adjusting shaft 211, and the both ends of spring 213 are abutted with lifting plate 210 and pressing plate 130.

[0037] Wherein, pressing plate 130 and lifting plate 210 move simultaneously, and the parallelism between pressing plate 130 and lifting plate 210 is adjusted by locking block 212.When first driving part 240 drives lifting plate 210 to move down, pressing plate 130 first presses insulating film strip 300, and spring 213 is compressed, and punch 120 contacts insulating film strip 300 again.Pressing plate 130 and lifting plate 210 share the same driving part, which can simplify structure and save cost.

[0038] In the embodiment, the part area of fixed plate 220 corresponding to lower die holder 140 is hollowed out, for needle 170 to pass through or accommodate baffle 150, baffle 150 is fixedly connected with fixed plate 220 or fixedly connected with lower die holder 140.Gas blowing plate 160 is installed at the bottom of fixed plate 220.

[0039] In the embodiment, hole adhesive tape preparation mechanism further includes mounting plate 230 located above lifting plate 210, mounting plate 230 and fixed plate 220 are connected by guide column 260, lifting plate 210 is sleeved on guide column 260, first driving part 240 is set on mounting plate 230, and first driving part 240 is air cylinder.In the embodiment, second driving part 250 is set at the bottom of fixed plate 220, second driving part 250 is driven to connect with needle holder 180 by connecting rod 270, and second driving part 250 is air cylinder.

[0040] In other embodiments of the utility model, first driving part 240 and second driving part 250 can also be set on one side of lifting plate 210, and first driving part 240 and second driving part 250 are gear rack transmission mechanism, screw transmission mechanism or other electric transmission mechanism.

[0041] Optionally, the number of punching assemblies is 1-3, that is, the hole-tape preparation mechanism can punch holes on at most three insulating film strips 300 simultaneously. The full-screen photovoltaic module uses three insulating film strips 300, and the number of punching assemblies, that is, the number of hole-tape preparation mechanisms, is set according to the configuration of components in the overlap welding device.

[0042] Optionally, the number of punching assemblies is two, and the punching positions of the two punching assemblies are staggered, that is, when the two insulating film strips 300 are cut off from the same position, the through holes 310 on the two insulating film strips 300 are staggered with each other, and the two insulating film strips 300 located at the middle and one end of the full-screen photovoltaic module are prepared simultaneously.

[0043] The above only discloses the preferred embodiments of the present application, and of course cannot limit the scope of the present application, and those skilled in the art can understand that all or part of the above-mentioned embodiments can be implemented, and equivalent changes made according to the claims of the present application still belong to the scope of the present application.

Claims

1. A punch assembly characterized by, The punch assembly comprises: an upper die seat (110), a pressing plate (130), a lower die seat (140) and a needle seat (180) arranged in sequence from top to bottom, the upper die seat (110), the pressing plate (130) and the needle seat (180) being movable up and down relative to the lower die seat (140), the upper die seat (110) being provided with a punch (120), the pressing plate (130) being provided with a avoiding hole (131) through which the punch (120) passes, the lower die seat (140) being provided with a discharge hole (142) corresponding to the punch (120), the needle seat (180) being vertically provided with a ejector pin (170), a pin hole (121) being arranged on a punching surface of the punch (120), the ejector pin (170) being opposite to the pin hole (121).

2. The punch assembly of claim 1, wherein: The lower die seat (140) and the needle seat (180) are further provided with a baffle (150), the baffle (150) being provided with a guide hole (151) through which the ejector pin (170) passes, one side of the baffle (150) being provided with a blowing plate (160), the blowing plate (160) being provided with a blowing hole (161) for blowing air obliquely upward, the blowing hole (161) being directed toward a top end of the guide hole (151).

3. The punch assembly of claim 1, wherein: The punch (120), the avoiding hole (131), the discharge hole (142) and the ejector pin (170) are linearly and spacedly provided with a plurality of corresponding arrangements.

4. The punch assembly of claim 1, wherein: The lower die seat (140) is provided with a blocking strip (141) on a top surface and at both sides of the discharge hole (142), and opposite side walls of the two blocking strips (141) and the top surface of the lower die seat (140) form a groove.

5. The punch assembly of claim 1, wherein: The ejector pin (170) comprises a first segment (171) and a second segment (172) connected in sequence, a top end of the first segment (171) is a tapered pin tip, a bottom end of the second segment (172) is fixed on the needle seat (180), and an axial diameter of the first segment (171) is smaller than an axial diameter of the second segment (172).

6. A hole-making adhesive tape manufacturing mechanism characterized by comprising: The punch assembly comprises: a lifting plate (210), a fixed plate (220), a first driving member (240), a second driving member (250) and the punch assembly according to any one of claims 1-5, the lifting plate (210) being located above the fixed plate (220), the upper die seat (110) being arranged at a bottom of the lifting plate (210), the lower die seat (140) being arranged on the fixed plate (220), the first driving member (240) being in driving connection with the lifting plate (210) to drive the lifting plate (210) to move up and down, the second driving member (250) being in driving connection with the needle seat (180) to drive the needle seat (180) to move up and down, a plurality of adjusting shafts (211) being fixed on the pressing plate (130), top ends of the adjusting shafts (211) passing through the lifting plate (210) from bottom to top and being locked by locking blocks (212), springs (213) being sleeved on the adjusting shafts (211), and two ends of the springs (213) being in abutment with the lifting plate (210) and the pressing plate (130).

7. The perforated adhesive tape preparation mechanism according to claim 6, characterized in that: The installation plate (230) and the fixed plate (220) are connected through a guide column (260), the lifting plate (210) is sleeved on the guide column (260), the first driving element (240) is arranged on the installation plate (230), and the first driving element (240) is a gas cylinder.

8. The perforated adhesive tape preparation mechanism according to claim 6, characterized in that: The second driving element (250) is arranged at the bottom of the fixed plate (220), the second driving element (250) is drivingly connected with the needle seat (180) through a connecting rod (270), and the second driving element (250) is a gas cylinder.

9. The hole-tape gum belt preparation mechanism according to claim 6, wherein: The number of the punching assemblies is 1-3.

10. The perforated adhesive tape preparation mechanism of claim 9, wherein: The number of the punching assemblies is two, and the punching positions of the two punching assemblies are staggered.

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