CN215467133U - Photovoltaic frame extrusion die - Google Patents

Abstract

The utility model relates to a photovoltaic frame extrusion die which comprises an upper die and a lower die, wherein the upper die comprises at least one group of shunting holes, a first shunting hole, a second shunting hole and a die core are arranged in each group of shunting holes, a shunting bridge is formed between the first shunting hole and the second shunting hole, the die core protrudes out of the discharge end of the upper die, the die core is connected with the shunting bridge, the lower die comprises at least one welding chamber, each welding chamber is communicated with one group of shunting holes, each welding chamber is concavely arranged at the feed end of the lower die, and each welding chamber is communicated with a die cavity and a discharge cavity in sequence from the feed end to the discharge end of the lower die. According to the photovoltaic frame, the number of the flow dividing holes in each group of the flow dividing holes is reduced, so that the resistance of metal is reduced, the metal extrusion speed is increased, and the production efficiency of the photovoltaic frame is improved; in addition, because the reduction of reposition of redundant personnel hole quantity makes the width of reposition of redundant personnel bridge increase, and the reposition of redundant personnel bridge is difficult for taking place to warp or fracture, increases extrusion die's bearing strength, promotes extrusion die's life-span, practices thrift manufacturing cost.

Description

Photovoltaic frame extrusion die

Technical Field

The utility model relates to the technical field of photovoltaic frame manufacturing, in particular to a photovoltaic frame extrusion die.

Background

The solar photovoltaic technology is a new renewable energy technology, the development is rapid, the photovoltaic power generation not only needs to replace part of conventional energy, but also becomes a main supply body of world energy, the prospect is wide, the aluminum alloy section bar frame used for the solar panel assembly has huge market demand in recent years, the solar frame aluminum section bar has very high requirements on the surface and the size, the production efficiency of the section bar is not high, the yield is not high, and the high requirements on the design, the processing and the maintenance of a die are provided.

In the prior art, each photovoltaic frame is generally adopted to correspond to four shunting holes, and excessive shunting holes reduce the extrusion speed of the photovoltaic frame and reduce the production efficiency of the photovoltaic frame.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a photovoltaic frame extrusion die which comprises an upper die and a lower die buckled with the upper die, wherein the upper die comprises at least one group of shunting holes, each group of shunting holes penetrates through the upper die, a first shunting hole, a second shunting hole and a die core are arranged in each group of shunting holes, a shunting bridge is formed between the first shunting hole and the second shunting hole, the die core protrudes out of the discharge end of the upper die, the die core is connected with the shunting bridge, the lower die comprises at least one welding chamber, each welding chamber is communicated with one group of shunting holes, each welding chamber is concavely arranged at the feed end of the lower die, and each welding chamber is communicated with a die cavity and a discharge cavity in sequence from the feed end to the discharge end of the lower die.

According to the photovoltaic frame, the upper die is provided with the group of the shunting holes comprising the two shunting holes, so that the number of the shunting holes in each group of the shunting holes is reduced, the resistance on metal is reduced, the metal extrusion speed is accelerated, and the production efficiency of the photovoltaic frame is improved; in addition, because the reduction of reposition of redundant personnel hole quantity makes the width of reposition of redundant personnel bridge increase, and the reposition of redundant personnel bridge is difficult for taking place to warp or fracture, increases extrusion die's bearing strength, promotes extrusion die's life-span, practices thrift manufacturing cost.

Furthermore, a cantilever is arranged in each group of the shunting holes, the first end of the cantilever is connected with the shunting bridge, and the second end of the cantilever is connected with the mold core;

the shunt bridge comprises a feed end shunt bridge and a discharge end shunt bridge which are connected, the discharge end shunt bridge comprises a middle section shunt bridge, a first section shunt bridge and a second section shunt bridge, the first section shunt bridge and the second section shunt bridge are respectively connected with the middle section shunt bridge, the middle section shunt bridge is connected with the first end of the cantilever, and the first section shunt bridge and the second section shunt bridge are respectively positioned on two sides of the cantilever;

the first section of the shunting bridge and the second section of the shunting bridge respectively comprise a first straight line section, a bending section and a second straight line section which are sequentially connected, the first straight line section is connected with the inner wall of the shunting hole, the bending section is located between the first straight line section and the second straight line section, the bending direction of the bending section faces to the outer corner of the die cavity, and the second straight line section is connected with the cantilever.

According to the utility model, the first section of shunting bridge and the second section of shunting bridge which are positioned at two sides of the middle section of shunting bridge in the discharge end shunting bridge are set to be shunting bridges with bending sections, and the bending direction of the bending sections faces to the outer inflection point of the photovoltaic frame, so that the metal flow is welded at the outer inflection point of the die cavity, the surface defect of a welding black line formed after anodic oxidation of the photovoltaic frame is effectively avoided, the surface quality of the photovoltaic frame is improved, and the finished product qualification rate of the photovoltaic frame is improved.

Further, the included angle between the bent section and the first straight line section is 15-25 degrees.

According to the utility model, the included angle between the bent section and the first straight line section is limited within a certain range, so that the position of the metal flow welding is close to the inflection point of the outer side surface of the photovoltaic frame, the surface defect of welding black lines formed after anodic oxidation of the photovoltaic frame is effectively avoided, and the surface quality of the photovoltaic frame is improved.

Furthermore, the feed end flow dividing bridge is of a straight-line structure.

According to the utility model, the feed end diversion bridge is arranged into the I-shaped structure, so that the extrusion speed can be increased, the production efficiency can be improved, the service life of an extrusion die can be prolonged, and the production cost can be saved.

Furthermore, the number of the groups of the shunting holes is four, and the number of the welding chambers is four.

According to the utility model, four photovoltaic frames can be simultaneously formed by arranging four groups of branch flow holes and correspondingly arranging four welding chambers, so that four photovoltaic frames can be simultaneously formed by one set of die, namely one photovoltaic frame is formed by four photovoltaic frames, and the production efficiency of the photovoltaic frames is greatly improved.

Furthermore, the four groups of the shunting holes are arranged in a central symmetry mode by taking the center of the upper die as a center.

By arranging the four-component flow holes with the centers of the upper dies in a symmetrical structure, the extrusion force applied to the dies is distributed evenly, and the dies are not easy to deform; the four-component flow holes are regularly arranged, the die is simple in structure, and the design efficiency of the die is improved.

Further, the first diversion hole is close to the center of the upper die, the second diversion hole is far away from the center of the upper die, the first diversion hole is one of a rectangular diversion hole or a right-angled trapezoid diversion hole, and the second diversion hole is the other diversion hole.

Further, the ratio of the cross-sectional area of the rectangular shunt hole to the cross-sectional area of the right trapezoid shunt hole is between 1.0: 1.5-1.0: 1.1.

The utility model limits the cross section area of the rectangular shunt hole and the right-angle trapezoid shunt hole, so that the flow velocity of molten metal is more uniform, and the surface quality of the formed aluminum profile is improved.

Furthermore, the lower die is provided with a flow guiding pit, and the flow guiding pit is positioned between the welding chamber and the die cavity and is communicated with the welding chamber and the die cavity;

the depth of the flow guiding pits is between 3mm and 5mm, and the distance between the side wall of the adjacent flow guiding pits and the side wall of the die cavity is between 6mm and 8 mm.

The utility model has the pre-forming function by arranging the diversion pits.

Further, the thickness of the feed end shunting bridge is between 15mm and 18mm, the upper end surface of the feed end shunting bridge is positioned below the feed end of the upper die, and the distance between the upper end surface of the feed end shunting bridge and the feed end of the upper die is between 8mm and 10 mm;

the thickness of the discharge end shunting bridge is between 4mm and 6mm, the lower end surface of the discharge end shunting bridge is positioned above the discharge end of the upper die, and the distance between the lower end surface of the discharge end shunting bridge and the discharge end of the upper die is between 3mm and 7 mm;

and/or the depth of the welding chamber is between 5mm and 7 mm.

The thickness of the shunting bridge at the feeding end is limited within a certain range, so that the structural strength of the shunting bridge is ensured, and the shunting bridge at the feeding end is limited to be lower than the feeding end of the upper die, so that the flow velocity of the metal flow and the structural strength of the shunting bridge are improved; the thickness of the material end shunting bridge is limited within a certain range, so that the speed of the metal flow is improved conveniently.

Drawings

Fig. 1 is an exploded view of an extrusion die assembly for photovoltaic frames according to the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a schematic top view of a lower mold of the photovoltaic frame extrusion mold provided in the present invention;

fig. 4 is a schematic top view of an upper mold of the photovoltaic frame extrusion mold provided by the present invention;

fig. 5 is a schematic bottom view of an upper mold of the photovoltaic frame extrusion mold according to the present invention;

FIG. 6 is an enlarged partial view of the encircled portion of FIG. 5;

FIG. 7 is a cross-sectional view taken along line B-B of FIG. 3;

FIG. 8 is a cross-sectional view taken at C-C of FIG. 4;

description of reference numerals:

100-upper mould; 110-a shunt hole; 120-a first splitter aperture; 130-a second flow dividing orifice; 140-a shunt bridge; 141-feed end splitter bridge; 142-a discharge end diverter bridge; 143-midsection shunt bridge; 144-first section of splitter bridge; 1441 — a first straight line segment; 1442-bending section; 1443 — second straight line segment; 145-a second section of the flow diversion bridge; 150-a mold core; 160-cantilever;

200-lower die; 210-a welding chamber; 220-diversion pit; 230-a mold cavity; 231-a first mold cavity; 232-a second mold cavity; 233-a third mold cavity; 240-discharge chamber;

theta is the included angle between the bending section and the first straight line section;

t 1-depth of the flow guiding pit;

d1 — distance between side wall of adjacent flow guiding pit and side wall of mold cavity;

t 2-thickness of feed end flow-dividing bridge;

d 2-distance between the feed end diversion bridge and the feed end of the upper die;

t 3-thickness of discharge end diversion bridge;

d 3-the distance between the lower end surface of the discharge end shunting bridge and the discharge end of the upper die;

t 4-depth of the weld chamber;

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures 1 to 8 are described in detail below.

It should be noted that, herein, the "feeding end" refers to an end at which the material is input, and the "discharging end" refers to an end at which the material or the product is output.

In the present invention, the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1 and 2, the present embodiment provides a photovoltaic frame extrusion die, which includes an upper die 100 and a lower die 200 fastened to the upper die 100, the upper die 100 includes at least one set of shunt holes 110, each set of shunt holes 110 penetrates through the upper die 100, a first shunt hole 120, a second shunt hole 130 and a die core 150 are disposed in each set of shunt holes 110, a shunt bridge 140 is formed between the first shunt hole 120 and the second shunt hole 130, the die core 150 protrudes out of a discharge end of the upper die 100, the die core 150 is connected to the shunt bridge 140, the lower die 200 includes at least one welding chamber 210, each welding chamber 210 is communicated with one set of shunt holes 110, each welding chamber 210 is recessed in a feed end of the lower die 200, and each welding chamber 210 is sequentially communicated with a die cavity 230 and a discharge cavity 240 from the feed end to the discharge end of the lower die 200.

It should be noted that the discharging cavity 240 is a stepped cavity, and the diameter of the stepped cavity gradually increases along the discharging direction.

Referring to fig. 3 and 4, it should be noted that the mold cavity 230 includes a first mold cavity 231, a second mold cavity 232 and a third mold cavity 233, the first mold cavity 231 is used for forming a mounting edge of the photovoltaic frame, the second mold cavity 232 is used for cooperating with the mold core 150 to form a connecting cavity of the photovoltaic frame, the third mold cavity 233 is used for forming a clamping portion of the photovoltaic frame, the clamping portion is used for clamping the laminated member, and the first shunt hole 120 or the second shunt hole 130 is opposite to the first mold cavity 231.

Here, "opposite" means that the first cavity 231 is separately opposed to the first porthole 120 or the second porthole 130.

Therefore, in the embodiment, the first mold cavity 231 is directly opposite to the first shunt hole 120 or the second shunt hole 130, so that no welding line is generated on the mounting edge of the photovoltaic frame, the surface quality of the photovoltaic frame is improved, and the yield of the finished product of the photovoltaic frame is improved.

Therefore, in the embodiment, the set of shunting holes 110 including the two shunting holes 110 is arranged in the upper die 100, so that the number of the shunting holes 110 is reduced, the resistance on the metal is reduced, the metal extrusion speed is increased, and the production efficiency of the photovoltaic frame is improved; in addition, because the number of the diversion holes 110 is reduced, the width of the diversion bridge 140 can be increased, the diversion bridge 140 is not easy to deform or crack, the bearing strength of the extrusion die is increased, the service life of the extrusion die is prolonged, and the production cost is saved.

Referring to fig. 2, 3, 5 and 6, preferably, a cantilever 160 is disposed in each diversion hole 110, a first end of the cantilever 160 is connected to the diversion bridge 140, and a second end is connected to the mold core 150;

the diversion bridge 140 comprises a feed end diversion bridge 141 and a discharge end diversion bridge 142 which are connected, the discharge end diversion bridge 142 comprises a middle section diversion bridge 143, a first section diversion bridge 144 and a second section diversion bridge 145 which are respectively connected with the middle section diversion bridge 143, the middle section diversion bridge 143 is connected with the first end of the cantilever 160, and the first section diversion bridge 144 and the second section diversion bridge 145 are respectively positioned at two sides of the cantilever 160;

the first section of the shunt bridge 144 and the second section of the shunt bridge 145 both include a first straight line section 1441, a bent section 1442 and a second straight line section 1443 which are connected in sequence, the first straight line section 1441 is connected with the inner wall of the shunt hole 110, the bent section 1442 is located between the first straight line section 1441 and the second straight line section 1443, the bending direction of the bent section 1442 faces to the outer corner of the mold cavity 230, and the second straight line section 1443 is connected with the cantilever 160.

It should be noted that the connection between the first straight line segment 1441 and the inner wall of the diversion hole 110 is in smooth transition, the connection between the first straight line segment 1441 and the bent segment 1442 is in smooth transition, and the connection between the bent segment 1442 and the second straight line segment 1443 is in smooth transition.

Therefore, this embodiment sets up the first section of reposition of redundant personnel bridge 144 and the second section of reposition of redundant personnel bridge 145 that lie in interlude reposition of redundant personnel bridge 143 both sides in shunting bridge 142 to have the reposition of redundant personnel bridge 140 of the section of bending 1442, the outside inflection point department of the direction orientation die cavity of bending the section of bending 1442, the metal flow that makes is in the inflection point department seam of photovoltaic frame lateral surface, the effectual surface defect who forms the seam black line after having avoided photovoltaic frame anodic oxidation, the surface quality of photovoltaic frame has been promoted, the finished product qualification rate of photovoltaic frame is improved.

Referring to fig. 6, the angle θ between the bent segment 1442 and the first straight segment 1441 is preferably 15 ° to 25 °.

Therefore, this embodiment makes the position of metal flow seam be close to the inflection point department of photovoltaic frame lateral surface through restricting the contained angle between the section of bending 1442 and the first straight line segment 1441 and be in certain scope, and the effectual surface defect who forms seam black line after having avoided photovoltaic frame anodic oxidation has promoted the surface quality of photovoltaic frame.

Preferably, the feed-end splitter bridge 141 is a "straight" structure.

It should be noted that a fillet is arranged at the connection position of the feed end diversion bridge 141 and the inner wall of the diversion hole 110.

Therefore, this embodiment sets up to a straight line structure through shunting bridge 141 with the feed end, not only can improve extrusion speed, promotes production efficiency, also can improve extrusion die life, saves manufacturing cost.

Referring to fig. 1, it is preferable that the number of the groups of the diverging holes 110 is four and the number of the soldering chamber 210 is four.

Therefore, in the embodiment, four photovoltaic frames can be formed simultaneously by arranging the four component flow holes 110 and correspondingly arranging the four welding chambers 210, so that the four photovoltaic frames can be formed simultaneously by one set of die, namely, one photovoltaic frame is formed by four, and the production efficiency of the photovoltaic frames is greatly improved.

Referring to fig. 3, in the present embodiment, the cross-sectional shape of the mold cavity 230 is preferably a "dune" shaped structure, and the orientation of the mold cavity 230 in communication with each bonding chamber 210 is the same. Under this kind of mode of putting, the orientation of putting of each fashioned photovoltaic frame is unanimous, after four photovoltaic frames were exported from the discharge end of lower mould 200, is convenient for put the photovoltaic frame.

Referring to fig. 4, the four-component flow holes 110 are preferably arranged in central symmetry with respect to the center of the upper mold 100.

Therefore, in the present embodiment, the four shunt holes 110 are symmetrically formed at the center of the upper mold 100, so that the distribution of the extrusion force applied to the mold is balanced, and the mold is not easily deformed; the four-component flow holes 110 are regularly arranged, the mold is simple in structure, and the design efficiency of the mold is improved.

Preferably, the first diversion hole 120 is near the center of the upper die 100, the second diversion hole 130 is far from the center of the upper die 100, the first diversion hole 120 is one of the rectangular diversion hole 110 or the right trapezoid diversion hole 110, and the second diversion hole 130 is the other.

It should be noted that the rectangular diversion hole 110 and the right trapezoid diversion hole 110 are both provided with rounded corners.

Referring to fig. 4, in the present embodiment, the first orifice 120 is close to the center of the upper die 100, the second orifice 130 is far from the center of the upper die 100, the first orifice 120 is a rectangular orifice 110, and the second orifice 130 is a right-angled trapezoidal orifice 110.

The ratio of the cross-sectional area of the rectangular shunt hole 110 to the cross-sectional area of the right trapezoid shunt hole 110 is 1.0: 1.5-1.0: 1.1, preferably, the ratio of the cross-sectional area of the rectangular shunt hole 110 to the cross-sectional area of the right-angled trapezoidal shunt hole 110 is 1.0: 1.3.

therefore, in the embodiment, the cross sectional areas of the rectangular diversion holes 110 and the right-angled trapezoid diversion holes 110 are limited, so that the flow rate of molten metal is uniform, and the surface quality of the formed aluminum profile is improved.

Referring to fig. 7, preferably, the lower mold 200 is provided with a flow guiding pit 220, and the flow guiding pit 220 is located between the welding chamber 210 and the mold cavity 230 and is communicated with the welding chamber 210 and the mold cavity 230;

the depth t1 of the flow-guiding pits 220 is between 3mm and 5mm, and the distance d1 between the side wall of the adjacent flow-guiding pit 220 and the side wall of the mold cavity 230 is between 6mm and 8 mm.

It should be noted that the diversion pit 220 has a forming hole with the same shape as the cross-section of the photovoltaic frame, and the forming hole is communicated with the discharging cavity 240.

Therefore, the present embodiment performs a pre-forming function by providing the flow guiding pits 220.

Referring to fig. 8, preferably, the thickness t2 of the feed-end diverter bridge 141 is between 15mm and 18mm, the upper end surface of the feed-end diverter bridge 141 is located below the feed end of the upper die 100, and the distance d2 between the upper end surface of the feed-end diverter bridge 141 and the feed end of the upper die 100 is between 8mm and 10 mm;

the thickness t3 of the discharge end shunting bridge 142 is between 4mm and 6mm, the lower end surface of the discharge end shunting bridge 142 is positioned above the discharge end of the upper die 100, and the distance d3 between the lower end surface of the discharge end shunting bridge 142 and the discharge end of the upper die 100 is between 3mm and 7 mm;

and/or the depth t4 of the weld chamber 210 is between 5mm and 7 mm.

It should be noted that the feed-end diversion bridge 141 and the discharge-end diversion bridge 142 are in uniform transition, so as to effectively reduce the amount of dead-zone metals.

Therefore, in the present embodiment, the thickness of the feed end shunting bridge 141 is limited within a certain range, so as to ensure the structural strength of the shunting bridge 140, and the feed end shunting bridge 141 is limited to be lower than the feed end of the upper die 100, so as to be beneficial to improving the flow velocity of the metal flow and the structural strength of the shunting bridge 140; by limiting the thickness of the stub flow bridges 142 to within a certain range, the velocity of the metal flow is facilitated to be increased.

In this embodiment, the upper mold 100 and the lower mold 200 are connected by a fixing pin (not shown), and in order to further improve the positioning and assembling effect, the fixing pin is a circular pin, and is not easy to be dislocated.

In this embodiment, the thickness ratio of the upper mold 100 to the lower mold 200 is 1.25: 1-3: 1, the upper die 100 is designed to be thick enough, so that the upper die 100 can bear most of extrusion force, the shunt bridge 140 and the die core 150 are well protected from deformation, and the strength of the extrusion die is greatly improved.

Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the utility model as defined in the appended claims.

Claims (10)

1. The utility model provides a photovoltaic frame extrusion die, including last mould (100) and with lower mould (200) of last mould (100) lock, its characterized in that, go up mould (100) including at least a set of reposition of redundant personnel hole (110), every group reposition of redundant personnel hole (110) run through go up mould (100), be provided with first reposition of redundant personnel hole (120), second reposition of redundant personnel hole (130) and mold core (150) in every group reposition of redundant personnel hole (110), form reposition of redundant personnel bridge (140) between first reposition of redundant personnel hole (120) and the second reposition of redundant personnel hole (130), mold core (150) protrusion in the discharge end of last mould (100), mold core (150) with reposition of redundant personnel bridge (140) link to each other, lower mould (200) include at least one seam room (210), every seam room (210) all with wherein a set of reposition of redundant personnel hole (110) intercommunication, every seam room (210) are sunken to be located the feed end of lower mould (200), from the feeding end to the discharging end of the lower die (200), each welding chamber (210) is communicated with a die cavity (230) and a discharging cavity (240) in sequence.

2. The photovoltaic frame extrusion die of claim 1, wherein a cantilever (160) is further disposed in each set of the shunting holes (110), a first end of the cantilever (160) is connected to the shunting bridge (140), and a second end of the cantilever is connected to the mold core (150);

the flow dividing bridge (140) comprises a feed end flow dividing bridge (141) and a discharge end flow dividing bridge (142) which are connected, the discharge end flow dividing bridge (142) comprises a middle section flow dividing bridge (143), and a first section flow dividing bridge (144) and a second section flow dividing bridge (145) which are respectively connected with the middle section flow dividing bridge (143), the middle section flow dividing bridge (143) is connected with the first end of the cantilever (160), and the first section flow dividing bridge (144) and the second section flow dividing bridge (145) are respectively positioned on two sides of the cantilever (160);

the first section of the shunt bridge (144) and the second section of the shunt bridge (145) respectively comprise a first straight line section (1441), a bent section (1442) and a second straight line section (1443) which are sequentially connected, the first straight line section (1441) is connected with the inner wall of the shunt hole (110), the bent section (1442) is located between the first straight line section (1441) and the second straight line section (1443), the bending direction of the bent section (1442) faces to the outer corner of the mold cavity (230), and the second straight line section (1443) is connected with the cantilever (160).

3. The photovoltaic bezel extrusion die according to claim 2, characterized in that the angle θ between the bent section (1442) and the first straight line section (1441) is between 15 ° -25 °.

4. The photovoltaic edge frame extrusion die of claim 2, wherein the feed-end diverter bridge (141) is of a "straight" configuration.

5. The photovoltaic frame extrusion die of any one of claims 1-4, wherein the number of the groups of the shunt holes (110) is four, and the number of the welding chambers (210) is four.

6. The photovoltaic frame extrusion die of claim 5, wherein the four sets of the shunting holes (110) are arranged in a central symmetry manner with respect to the center of the upper die (100).

7. The photovoltaic frame extrusion die of claim 6, wherein the first diversion hole (120) is near the center of the upper die (100), the second diversion hole (130) is far from the center of the upper die (100), the first diversion hole (120) is one of a rectangular diversion hole (110) or a right trapezoid diversion hole (110), and the second diversion hole (130) is the other.

8. The photovoltaic bezel extrusion die of claim 7, wherein a ratio of the cross-sectional area of the rectangular shunt aperture (110) to the right trapezoid shunt aperture (110) is between 1.0: 1.5-1.0: 1.1.

9. The photovoltaic bezel extrusion die as recited in claim 1, wherein said lower die (200) is provided with a flow guiding pit (220), said flow guiding pit (220) being located between said soldering chamber (210) and said die cavity (230) and communicating with said soldering chamber (210) and said die cavity (230);

the depth t1 of the flow guiding pits (220) is between 3mm and 5mm, and the distance d1 between the side wall of the adjacent flow guiding pit (220) and the side wall of the die cavity (230) is between 6mm and 8 mm.

10. The photovoltaic bezel extrusion die according to any of claims 2 to 4, wherein the thickness t2 of the feed-end shunting bridges (141) is between 15mm and 18mm, the upper end surfaces of the feed-end shunting bridges (141) are located below the feed end of the upper die (100), and the distance d2 between the upper end surfaces of the feed-end shunting bridges (141) and the feed end of the upper die (100) is between 8mm and 10 mm;

the thickness t3 of the discharge end shunting bridge (142) is between 4mm and 6mm, the lower end surface of the discharge end shunting bridge (142) is positioned above the discharge end of the upper die (100), and the distance d3 between the lower end surface of the discharge end shunting bridge (142) and the discharge end of the upper die (100) is between 3mm and 7 mm;

and/or the depth t4 of the weld chamber (210) is between 5mm and 7 mm.

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