A high-flatness die-cutting device for polyester products

Abstract

The present invention relates to a high-flatness die-cutting device for polyester products, comprising an outer frame die-cutting waste discharge unit and a product die-cutting separation unit which are sequentially arranged along the moving direction of the material strip, the outer frame die-cutting waste discharge unit comprising a first upper die seat and a first lower die seat adapted to the first upper die seat, the bottom of the first upper die seat is provided with an outer frame die-cutting cutter die, the first lower die seat is provided with an outer frame waste material blanking trough, the outer frame die-cutting cutter die comprises a plurality of outer frame die-cutting cutting edges sequentially arranged on the bottom surface of the first upper die seat along the length direction of the first upper die seat, and a gap is provided between two adjacent outer frame die-cutting cutting edges. Compared with the prior art, the present invention adopts a two-step punching method, firstly cutting and discharging the outer frame waste between the polyester products, and making the two ends of the polyester product still connected to the rest of the polyester material strip, and then separately cutting the connection between the two ends of the polyester product and the polyester material strip, thereby avoiding the formation of a curved surface on the surface of the polyester product and ensuring the product quality.

Description

Technical Field

[0001] The invention belongs to the technical field of flexible circuit boards and relates to a high-flatness die-cutting device for polyester products. Background Art

[0002] Flexible Printed Circuit Board, also known as "FPC flexible board", is a printed circuit made of a flexible insulating substrate. It has many advantages that rigid printed circuit boards do not have. Flexible circuit boards are generally laminated structures. In the FPC laminate used inside mobile phones, a polyester (PC) product with a length of 8.72mm, a width of 2.04mm, and a thickness of 0.45mm is usually used. The processing of polyester products is mainly carried out by die-cutting, that is, using a die-cutting machine to punch out individual polyester products on the polyester material. In order to ensure that the machine can be automatically assembled smoothly when used in downstream factories, the die-cut polyester products must have a high surface flatness. Existing polyester products are die-cut, such as Figure 1 As shown, an etching knife is used as a knife die. The etching knife is provided with a blade 1, which is annular and matches the outer contour of the polyester product, and can directly punch out the polyester product on the polyester material 3. However, since the cross section of the blade 1 is in the shape of an inverted triangle, when the blade 1 contacts the polyester material and moves downward, the blade 1 will squeeze the left and right sides and the front and rear ends of the polyester product into the middle knife cavity 2, which will not only form a curved surface on the surface of the polyester product, but also the thickness of the middle part of the polyester product often exceeds the standard 0.45mm, and the highest point can reach 0.6mm. The polyester product processed in this way will have a surface curvature problem, which will lead to a decrease in the adhesion effect of the double-sided tape during subsequent use, causing the problem of loosening of the internal workpiece of the mobile phone, thereby shortening the service life of the mobile phone. Summary of the invention

[0003] The purpose of the present invention is to provide a high-flatness die-cutting device for polyester products in order to overcome the defects of the above-mentioned prior art.

[0004] The purpose of the present invention can be achieved by the following technical solutions:

[0005] A high-flatness die-cutting device for polyester products, the device comprising an outer frame die-cutting waste discharge unit and a product die-cutting separation unit which are sequentially arranged along the moving direction of a material belt, the outer frame die-cutting waste discharge unit comprising a first upper die seat and a first lower die seat matched with the first upper die seat, the bottom of the first upper die seat is provided with an outer frame die-cutting cutter die, the first lower die seat is provided with an outer frame waste material blanking trough, the outer frame die-cutting cutter die comprises a plurality of outer frame die-cutting cutting edges which are sequentially arranged on the bottom surface of the first upper die seat along the length direction of the first upper die seat, and a gap is provided between two adjacent outer frame die-cutting cutting edges.

[0006] Furthermore, the outer frame die-cutting edge is a closed edge. The closed edge can completely cut off the edge of the outer frame waste when die-cutting the polyester material strip, so that the cut outer frame waste is completely separated from the polyester material strip, so that the outer frame waste can directly fall into the outer frame waste material drop chute.

[0007] Furthermore, the outer frame die cutting edge includes a pair of polyester product side cutting edges arranged in parallel on the bottom surface of the first upper die seat and a pair of polyester product end cutting edges respectively arranged at both ends of the polyester product side cutting edges, and the two polyester product end cutting edges and the two polyester product side cutting edges are enclosed to form a closed space. The two polyester product end cutting edges and the two polyester product side cutting edges are alternately connected in sequence to form a closed cutting edge connected end to end, and a closed space is formed inside.

[0008] Furthermore, a polyester product clearance cavity is provided between the polyester product side edge portions of two adjacent outer frame die-cutting edges, and a gap is provided between the polyester product end face edge portions of two adjacent outer frame die-cutting edges. The polyester product side edge portions of two adjacent outer frame die-cutting edges cooperate with each other to die-cut out the two side faces of the polyester product, and the polyester product is located in the polyester product clearance cavity; the polyester product end face edge portions of two adjacent outer frame die-cutting edges cooperate with each other to die-cut out the two end faces of the polyester product, and because a gap is provided between the polyester product end face edge portions of two adjacent outer frame die-cutting edges, the two ends of the polyester product remain connected to the rest of the polyester material strip.

[0009] Furthermore, the spacing between the end edge portions of the polyester product of two adjacent outer frame die cutting edges is 0.5-0.6 mm, preferably 0.56 mm, that is, the width of the connection between the two ends of the polyester product and the polyester material strip is 0.5-0.6 mm.

[0010] Furthermore, the longitudinal section of the outer frame waste material chute is trapezoidal, the top of the trapezoidal section is convenient for matching with the outer frame die-cutting die, and the large space at the bottom is convenient for storing more outer frame waste.

[0011] Furthermore, a vacuum suction nozzle is provided in the outer frame waste material drop chute, which can maintain negative pressure in the outer frame waste material drop chute, so as to facilitate the smooth drop of the outer frame waste material.

[0012] Furthermore, the product die-cutting and separation unit comprises a second upper die seat and a second lower die seat adapted to the second upper die seat, and a product die-cutting die is arranged at the bottom of the second upper die seat. The product die-cutting die cuts off the connection between the two ends of the polyester product and the polyester material strip.

[0013] Furthermore, the product die-cutting die comprises a plurality of product die-cutting edges arranged in sequence on the bottom surface of the second upper die seat along the length direction of the second upper die seat, and the product die-cutting edges are adapted to the interval between two adjacent outer frame die-cutting edges. The product die-cutting edges are aligned with the connection between the two ends of the polyester product and the polyester material strip, and the connection is cut off.

[0014] Furthermore, the product die cutting edge comprises a pair of polyester product end face cutting parts arranged in parallel on the bottom surface of the second upper die seat, and the polyester product end face cutting parts cut off the connection between the polyester product end and the polyester material strip.

[0015] When the present invention is actually applied, the polyester material strip is first die-cut in the outer frame die-cutting waste discharge unit, and the outer frame waste of the polyester product is die-cut by using the outer frame die-cutting blade, and the die-cut outer frame waste directly falls into the outer frame waste material drop chute. Since there is a gap between two adjacent outer frame die-cutting blades, the two ends of the polyester product on the polyester material strip remaining after the outer frame waste is discharged are still connected to the rest of the polyester material strip, and the polyester product will not be separated from the polyester material strip; then the polyester material strip enters the product die-cutting separation unit, and the two ends of the polyester product are cut off from the polyester material strip in the product die-cutting separation unit, so that the polyester product is separated from the polyester material strip, and then individual polyester products are obtained.

[0016] Compared with the prior art, the present invention has the following characteristics:

[0017] 1) A two-step punching method is adopted. First, the outer frame waste between the polyester products is cut off and discharged, and a gap is set between the die-cutting edges of two adjacent outer frames to avoid the formation of a closed knife cavity that causes the polyester product to be squeezed toward the center, so that the two ends of the polyester product are still connected to the rest of the polyester material strip. Then, the two ends of the polyester product are separately cut off at the connection between the polyester material strip, and then individual polyester products can be obtained, thereby avoiding the formation of a curved surface on the surface of the polyester product and ensuring product quality;

[0018] 2) The outer frame die-cutting edge is a closed edge, and the first lower die base is provided with an outer frame waste blanking trough, which can completely separate the edge of the outer frame waste from the polyester material strip and directly discharge the waste into the outer frame waste blanking trough, avoiding the subsequent addition of a separate outer frame waste discharge unit, simplifying the operation and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the matching structure between the blade and the polyester material during die-cutting of existing polyester products;

[0020] Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 3It is a schematic structural diagram of the outer frame die-cutting waste discharge unit during die-cutting in the present invention;

[0022] Figure 4 It is a bottom view structural schematic diagram of the outer frame die-cutting die in the present invention;

[0023] Figure 5 It is a schematic diagram of the structure of the die-cutting die of the product in the present invention when viewed from above;

[0024] Figure 6 It is a schematic diagram of the structure of the polyester material strip after the outer frame is die-cut and the waste is discharged in the present invention;

[0025] Description of the markings in the figure:

[0026] 1—blade, 2—blade cavity, 3—polyester material, 4—first upper die seat, 5—first lower die seat, 6—outer frame die-cutting die, 7—outer frame waste material blanking chute, 8—outer frame die-cutting edge, 801—polyester product side edge portion, 802—polyester product end edge portion, 9—polyester product clearance cavity, 10—second upper die seat, 11—second lower die seat, 12—product die-cutting die, 13—product die-cutting edge, 14—polyester product end face cutting portion. DETAILED DESCRIPTION

[0027] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0028] Embodiment 1:

[0029] like Figure 2 The high-flatness die-cutting device for polyester products shown in the figure comprises an outer frame die-cutting waste discharge unit and a product die-cutting separation unit which are sequentially arranged along the moving direction of the material belt. The outer frame die-cutting waste discharge unit comprises a first upper die holder 4 and a first lower die holder 5 which is adapted to the first upper die holder 4. Figure 3 As shown, the bottom of the first upper die seat 4 is provided with an outer frame die cutting die 6, and the first lower die seat 5 is provided with an outer frame waste material blanking trough 7, the longitudinal section of the outer frame waste material blanking trough 7 is a trapezoid, and a vacuum suction nozzle is provided in the outer frame waste material blanking trough 7. Figure 4 As shown, the outer frame die-cutting die 6 includes a plurality of outer frame die-cutting edges 8 arranged sequentially on the bottom surface of the first upper die base 4 along the length direction of the first upper die base 4, and a gap is provided between two adjacent outer frame die-cutting edges 8.

[0030] The outer frame die cutting edge 8 is a closed edge. The outer frame die cutting edge 8 includes a pair of polyester product side cutting edges 801 arranged in parallel on the bottom surface of the first upper die base 4 and a pair of polyester product end face cutting edges 802 respectively arranged at both ends of the polyester product side cutting edge 801, and the two polyester product end face cutting edges 802 and the two polyester product side cutting edges 801 enclose a closed space. A polyester product clearance cavity 9 is provided between the polyester product side cutting edges 801 of two adjacent outer frame die cutting edges 8, and a spacing is provided between the polyester product end face cutting edges 802 of two adjacent outer frame die cutting edges 8. The spacing between the polyester product end face cutting edges 802 of two adjacent outer frame die cutting edges 8 is 0.56mm.

[0031] The product die-cutting and separation unit comprises a second upper die base 10 and a second lower die base 11 adapted to the second upper die base 10. A product die-cutting die 12 is disposed at the bottom of the second upper die base 10. Figure 5 As shown, the product die-cutting die 12 includes a plurality of product die-cutting edges 13 arranged in sequence on the bottom surface of the second upper die base 10 along the length direction of the second upper die base 10, and the product die-cutting edges 13 are adapted to the interval between two adjacent outer frame die-cutting edges 8. The product die-cutting edges 13 include a pair of polyester product end face cutting portions 14 arranged in parallel on the bottom surface of the second upper die base 10.

[0032] In actual application, the polyester material 3 strip is first die-cut in the outer frame die-cutting waste discharge unit, and the outer frame waste of the polyester product is die-cut by the outer frame die-cutting blade 8. The die-cut outer frame waste directly falls into the outer frame waste material drop groove 7. Since there is a gap between two adjacent outer frame die-cutting blades 8, the two ends of the polyester product on the remaining polyester material 3 strip after the outer frame waste is discharged are still connected to the rest of the polyester material 3 strip, and the polyester product will not be separated from the polyester material 3 strip. The structure of the polyester material 3 strip after the outer frame die-cutting waste discharge is as shown in FIG. Figure 6 As shown, the oblique line portion is the remaining portion on the polyester material 3 strip after the outer frame die-cutting and waste discharge; then the polyester material 3 strip enters the product die-cutting separation unit, and the two ends of the polyester product are cut off at the connection with the polyester material 3 strip in the product die-cutting separation unit, so that the polyester product is separated from the polyester material 3 strip, and then individual polyester products are obtained.

[0033] Embodiment 2:

[0034] In this embodiment, the distance between the polyester product end surface edge portions 802 of two adjacent outer frame die-cutting edges 8 is 0.5 mm, and the rest is the same as in Embodiment 1.

[0035] Embodiment 3:

[0036] In this embodiment, the distance between the polyester product end surface edge portions 802 of two adjacent outer frame die-cutting edges 8 is 0.6 mm, and the rest is the same as in Embodiment 1.

[0037] The above description of the embodiments is to facilitate the understanding and use of the invention by those skilled in the art. It is obvious that those skilled in the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the present invention is not limited to the above embodiments, and improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the present invention should be within the scope of protection of the present invention.

Claims

1. A high-flatness die-cutting device for polyester products, characterized in that: The device comprises an outer frame die-cutting waste discharge unit and a product die-cutting separation unit which are sequentially arranged along the moving direction of the material belt, the outer frame die-cutting waste discharge unit comprising a first upper die seat (4) and a first lower die seat (5) adapted to the first upper die seat (4), the bottom of the first upper die seat (4) is provided with an outer frame die-cutting knife die (6), the first lower die seat (5) is provided with an outer frame waste material drop groove (7), the outer frame die-cutting knife die (6) comprises a plurality of outer frame die-cutting cutting edges (8) sequentially arranged on the bottom surface of the first upper die seat (4) along the length direction of the first upper die seat (4), and a gap is provided between two adjacent outer frame die-cutting cutting edges (8); The outer frame die cutting edge (8) comprises a pair of polyester product side cutting edges (801) arranged in parallel on the bottom surface of the first upper die base (4) and a pair of polyester product end cutting edges (802) respectively arranged at both ends of the polyester product side cutting edges (801), and a closed space is formed between the two polyester product end cutting edges (802) and the two polyester product side cutting edges (801); A polyester product clearance cavity (9) is provided between the polyester product side edge portions (801) of two adjacent outer frame die cutting edges (8), and a gap is provided between the polyester product end edge portions (802) of two adjacent outer frame die cutting edges (8); The product die-cutting separation unit comprises a second upper die base (10) and a second lower die base (11) adapted to the second upper die base (10), and a product die-cutting die (12) is provided at the bottom of the second upper die base (10); The product die-cutting die (12) comprises a plurality of product die-cutting edges (13) arranged in sequence on the bottom surface of the second upper die base (10) along the length direction of the second upper die base (10), and the product die-cutting edges (13) are adapted to the interval between two adjacent outer frame die-cutting edges (8).

2. A high-flatness die-cutting device for polyester products according to claim 1, characterized in that: The spacing between the polyester product end face cutting edges (802) of two adjacent outer frame die cutting edges (8) is 0.5-0.6 mm.

3. A high-flatness die-cutting device for polyester products according to claim 1, characterized in that: The longitudinal section of the outer frame waste material chute (7) is trapezoidal.

4. A high-flatness die-cutting device for polyester products according to claim 1, characterized in that: A vacuum suction nozzle is arranged in the outer frame waste material dropping chute (7).

5. A high-flatness die-cutting device for polyester products according to claim 1, characterized in that: The product die-cutting edge (13) comprises a pair of polyester product end face cutting portions (14) arranged in parallel on the bottom surface of the second upper die base (10).

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