Punching knife edge of automobile rack product die

Abstract

The utility model discloses an automobile rack product die punching knife edge which comprises a female die and a male die, the female die is located at the top of the male die, a transition part is arranged outside the protruding part of the male die and located at the bottom of the male die, the thickness of the transition part is gradually increased from top to bottom, a transition angle is arranged at the bottom of the female die, and the transition angle is located at the bottom of the male die. A transition angle is arranged on the upper portion of the female die, the transition angle is located on the outer side of a cutting edge of the female die, a material ejecting assembly is installed in the female die and comprises a plurality of guide rods which are inserted into the female die in a sliding mode, and one end of the top of each guide rod is fixedly connected with the same top plate. According to the design, the problem of poor edge sealing is effectively solved, and the undesirable phenomena that the non-woven fabric of the rack shrinks after being subjected to edge cutting due to the lack of the edge pre-pressing design, the surface of a product is white and the material is expanded and layered are avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to die technical field, concretely is a kind of automobile shelf product die cutting knife edge. BACKGROUND

[0002] With the vigorous development of automobile industry and the promotion of consumer's demand for automobile interior space utilization and storage, automobile shelf market presents steady growth trend, in production process, die is often used for punching processing.

[0003] Through search, the utility model with china patent announcement No.CN201519984U discloses a kind of automobile interior part punching die, containing upper die, lower die and blade, the upper die is fixed with blade, the blade is sawtooth, the area corresponding to blade on the lower die is embedded with polyurethane strip.The utility model has the advantages that: the blade of upper die is set as sawtooth, and polyurethane strip is inlaid in the corresponding position of lower die.

[0004] The die knife edge on the market is generally adopted to chop off technology, and the structure is as shown in the following figure, which often leads to the appearance of obvious white edge, edge cracking and delamination phenomenon of product edge sealing.Therefore, a large number of edge sealing defective products need to be repaired, which not only wastes manpower and material resources, but also increases cost, and even causes product scrap seriously. Figure 1 Utility model content The utility model is to provide a kind of automobile shelf product die cutting knife edge, to solve the problem raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of automobile shelf product die cutting knife edge, including female die and male die, the female die is at the top position of male die, the male die protruding portion is provided with transition portion outside, the transition portion is at the bottom position of male die, and transition portion gradually increases in thickness from top to bottom, the bottom position of female die is provided with transition angle, and the transition angle is at the outside of female die blade edge.

[0006]

[0007] ​Compared with the traditional knife edge, the design more effectively solves the problem of poor edge sealing, avoids the phenomenon of heat shrinkage of the shelf non-woven fabric after cutting, white surface exposure and material expansion and layering due to lack of pre-pressing edge design, the transition part can change the geometry of the product in the edge sealing area, the stress originally concentrated near the right angle is dispersed on the arc surface, in the punching process, the round corner transition makes the material force more uniform, reduces the material tearing and breaking phenomenon caused by stress concentration, thereby improving the edge sealing quality, the transition angle can reduce the contact area and friction between the knife edge and the material, reduce the wear of the knife edge on the material, slow down the wear speed of the knife edge, and keep the sharpness for a long time, ensure the stability and consistency of the edge sealing in the punching process.

[0008] As a further preferred embodiment of the present technical solution, a material ejecting assembly is mounted inside the concave die, the material ejecting assembly comprises a plurality of guide rods slidingly inserted into the concave die, and a same top plate is fixedly connected to the top end of the plurality of guide rods, and a moving sleeve is fixedly mounted outside the concave die, and the moving sleeve is located directly below the plurality of guide rods.

[0009] The moving sleeve fixed outside the concave die is synchronously moved upward, and when the concave die and the convex die are opened, the moving sleeve also extrudes the counterweight upward, the counterweight drives the top plate to move out of the avoiding groove through the guide rods, and the finished product located at the top of the convex die is lifted up, facilitating the taking of the finished product.

[0010] As a further preferred embodiment of the present technical solution, a same horizontally arranged counterweight is fixedly connected to the bottom end of the plurality of guide rods.

[0011] As a further preferred embodiment of the present technical solution, an avoiding groove adapted to the top plate is formed in the top outer wall of the concave die.

[0012] As a further preferred embodiment of the present technical solution, a same finished product is arranged between the concave die and the convex die.

[0013] As a further preferred embodiment of the present technical solution, a round corner is formed in the bottom of the outer wall of the side of the transition part close to the outside.

[0014] The utility model provides a kind of automobile shelf product die punching cutter edge, with following

[0015] Beneficial effects:

[0016] (1)The utility model discloses a transition angle and transition part are set up, and compared with traditional knife edge, this design more effectively solves the problem of edge sealing, avoids the phenomenon of no -woven fabric heat shrinkage of the shelf after cutting, product surface exposes white and material expansion delamination caused by the lack of pre -pressing edge design, and the transition part can change the product geometry of the edge sealing area, and the stress concentrated in the place close to the right angle is dispersed to the arc surface, in the punching process, the round angle transition makes the stress of material more uniform, reduces the material tearing and rupture phenomenon caused by stress concentration, thereby improving the edge sealing quality, and the transition angle can reduce the contact area and friction between the knife edge and the material, reduces the wear of the knife edge to the material, slows down the wear speed of the knife edge, can keep the sharpness for a long time, and ensures the stability and consistency of the edge sealing in the punching process.

[0017] (2)The utility model discloses a material pushing subassembly is set up, and the moving sleeve fixed at the outside of the female die will go up simultaneously, when the female die and the male die open, the moving sleeve will also extrude the counterweight block upwards, and the counterweight block drives the top plate to move out of the avoiding groove through the guide rod, and the finished product at the top of the male die will be lifted, and the finished product is convenient to take. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the existing die structure schematic diagram of the utility model;

[0019] Figure 2 It is the whole first visual angle structure schematic diagram of the utility model;

[0020] Figure 3 It is the whole second visual angle structure schematic diagram of the utility model;

[0021] Figure 4 It is the Figure 3 enlarged structure schematic diagram of A place in the utility model;

[0022] Figure 5 It is the Figure 3 enlarged structure schematic diagram of B place in the utility model;

[0023] In the drawing: 1, female die;2, male die;3, transition angle;4, transition part;5, material pushing subassembly;6, finished product;501, guide rod;502, top plate;503, avoiding groove;504, counterweight block;505, moving sleeve. DETAILED DESCRIPTION

[0024] The technical scheme in the embodiments of the utility model will be clearly and completely described in combination with the drawings in the embodiments of the utility model.

[0025] The utility model provides technical scheme: as Figure 3 , Figure 4 and Figure 5As shown, in this embodiment, a die cutting notch of a car shelf product mold includes a concave die 1 and a convex die 2, the concave die 1 is at the top of the convex die 2, the convex die 2 is provided with a transition part 4 outside the convex die 2, the transition part 4 is at the bottom of the convex die 2, and the thickness of the transition part 4 gradually increases from top to bottom, the concave die 1 is provided with a transition angle 3 at the bottom, the transition angle 3 is outside the blade of the concave die 1, and the outer wall of the transition part 4 near the outside is provided with a round corner at the bottom.

[0026] The transition part 4 and the transition angle 3 work together to achieve better edge sealing effect, the transition part 4 can change the geometry of the product in the sealing area, and the stress originally concentrated near the right angle is dispersed to the arc surface, in the punching process, the round corner transition makes the material force more uniform, reduces the material tearing and cracking phenomenon caused by stress concentration, thereby improving the sealing quality, the transition angle 3 can reduce the contact area and friction between the blade and the material, reduce the wear of the blade on the material, slow down the wear speed of the blade, and keep the sharpness for a long time, ensure the stability and consistency of the sealing in the punching process, when the device works, the wall thickness of the product will decrease from the middle position to the bottom, and the arc transition makes the product edge closing effect better, and the white is not exposed.

[0027] As shown in Figure 2 and Figure 3 , the inside of the concave die 1 is provided with a material lifting assembly 5, the material lifting assembly 5 includes a plurality of guide rods 501 slidingly inserted into the inside of the concave die 1, the top end of the plurality of guide rods 501 is fixedly connected with the same top plate 502, the outside of the concave die 1 is fixedly provided with a moving sleeve 505, and the moving sleeve 505 is located below the plurality of guide rods 501.

[0028] The moving sleeve 505 fixed outside the concave die 1 will move up synchronously, when the concave die 1 and the convex die 2 are opened, the moving sleeve 505 will also press the counterweight 504 upwards, the counterweight 504 drives the top plate 502 to move out of the avoiding groove 503 through the guide rod 501, and the finished product 6 at the top of the convex die 2 will be lifted, facilitating the taking of the finished product 6.

[0029] As shown in Figure 3 , the bottom end of the plurality of guide rods 501 is fixedly connected with the same horizontally arranged counterweight 504, under the action of the counterweight 504, the guide rod 501 will automatically move down under the action of gravity.

[0030] As shown in Figure 3 , the top outer wall of the concave die 1 is provided with an avoiding groove 503 matched with the top plate 502, and the top plate 502 will completely enter the inside of the avoiding groove 503 during processing, without affecting the punching work.

[0031] As shown in Figure 3 , the concave die 1 and the convex die 2 are provided with the same finished product 6.

[0032] The utility model provides a kind of automobile shelf product die cutting knife edge, specific working principle as follows:

[0033] Transition part 4 and transition angle 3 work cooperatively to realize better cutting edge sealing effect, transition part 4 can change the geometric shape of product B face in sealing zone, and the stress originally concentrated near the right angle is dispersed to the arc surface, in the cutting process, the rounded transition makes the stress of material more uniform, reduces the material tearing and rupture phenomenon caused by stress concentration, thereby improving the sealing quality, transition angle 3 can reduce the contact area and friction between knife edge and material, reduce the wear of material by knife edge, slow down the wear speed of knife edge, can maintain sharpness for a long time, ensure the stability and consistency of sealing in cutting process, when the device works, the wall thickness of product will decrease from the middle position, and transition is circular arc, so that the product edge closing effect is better, and there is no white, as shown below Figure 5 When work is completed, the driving structure outside drives the concave die 1 to move upwards. The moving sleeve 505 fixed outside the concave die 1 will move upwards synchronously, when the concave die 1 and the convex die 2 are opened, the moving sleeve 505 will also extrude the counterweight 504 upwards, the counterweight 504 drives the top plate 502 to move out of the avoiding slot 503 through the guide rod 501, the finished product 6 on the top of the convex die 2 will be lifted, facilitating the taking of the finished product 6.

[0034] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A die cutting blade for an automotive shelf product mould comprising a female die (1) and a male die (2) characterised in that: The concave die (1) is in the top position of the convex die (2), the convex die (2) is provided with a transition part (4) outside the convex die (2), the transition part (4) is in the bottom position of the convex die (2), and the thickness of the transition part (4) gradually increases from top to bottom, the bottom position of the concave die (1) is provided with a transition angle (3), and the transition angle (3) is outside the cutting edge of the concave die (1).

2. A die kiss for an automotive tray product mold according to claim 1, wherein: The concave die (1) is internally provided with a material ejecting assembly (5), the material ejecting assembly (5) comprises a plurality of guide rods (501) which are slidingly inserted into the concave die (1), one end of the top of the plurality of guide rods (501) is fixedly connected with the same top plate (502), the concave die (1) is externally fixedly provided with a moving sleeve (505), and the moving sleeve (505) is located below the plurality of guide rods (501).

3. An automotive tray product mold die kiss cut trim according to claim 2, wherein: One end of the bottom of the plurality of guide rods (501) is fixedly connected with the same horizontally arranged counterweight (504).

4. An automotive tray product mold die kiss cut trim according to claim 2, wherein: The top outer wall of the concave die (1) is provided with an avoiding groove (503) matched with the top plate (502).

5. An automotive tray product mold die kiss cut trim according to claim 1, wherein: The concave die (1) and the convex die (2) are provided with the same finished product (6).

6. An automotive tray product mold die kiss cut trim according to claim 1, wherein: The transition part (4) is provided with a round corner at the bottom of the outer wall of one side close to the outside.

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