Stamping apparatus feed device

Abstract

The utility model relates to stamping feeding equipment technical field especially a stamping equipment feeding device, including the material discharging frame of installation roll stock, and feeding device includes support roller group, second traction roller group, first traction roller group, the material of roll stock release has second reverse folding part in support roller group, second reverse folding part is opposite with the winding direction of roll stock, the material of roll stock release has positive folding part in second traction roller group downstream, positive folding part is same with the winding direction of roll stock, first traction roller group is located in the stamping station, and the material between first traction roller group and positive folding part has first reverse folding part, first reverse folding part is opposite with the winding direction of roll stock, and first reverse folding part is natural bending state. The device sets up second reverse folding part, effectively releases the initial curl stress of roll stock, avoids the deformation of material band rebound, and the first reverse folding part before first traction roller group plays the flexible traction buffer effect of near mould end, prevents the phenomenon of pulling or jumping material in the stamping process.

Description

Technical Field

[0001] This utility model relates to the field of stamping feeding equipment technology, and in particular to a stamping feeding device. Background Technology

[0002] Stamping is a common metal forming method widely used in the automotive, home appliance, and hardware industries. In continuous stamping production, to achieve high-efficiency and high-precision automated operation, coiled material is typically used for feeding, and a feeding device gradually delivers the coiled material into the stamping station. However, due to residual stress in the coiled material during the coiling process, the material often exhibits significant springback, warping, and vibration in the initial release phase. In severe cases, this can affect the stability of feeding and stamping accuracy, and even cause die damage or the generation of stamping defects.

[0003] Existing coil feeding structures are mostly linear or single-fold designs, lacking the ability to effectively level and buffer the coil material in multiple stages. During feeding, uneven tension release occurs, and the strip is easily affected by interference from preceding and following cycles, leading to positional errors and affecting the synchronization accuracy of the stamping station. Furthermore, some equipment lacks a flexible buffer structure near the stamping end, causing sudden changes in force on the strip during traction, resulting in material jumping or slippage, which is detrimental to improving the consistency and dimensional stability of stamped products. Utility Model Content

[0004] The purpose of this invention is to solve the problems of poor buffering effect and easy warping of the feeding device in the prior art, and to propose a feeding device for stamping equipment.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A feeding device for a stamping machine includes a feeding rack for mounting coiled material. The feeding device includes a support roller group, a second traction roller group, and a first traction roller group. When the coiled material is released, the material located in the support roller group has a second reverse fold portion, which is opposite to the winding direction of the coiled material. When the coiled material is released, the material located downstream of the second traction roller group has a forward fold portion, which is in the same winding direction as the coiled material. The material located in the first traction roller group at the stamping station and between the first traction roller group and the forward fold portion has a first reverse fold portion, which is opposite to the winding direction of the coiled material and is in a naturally curved state.

[0007] The curvature of the second fold is less than that of the first fold.

[0008] The support roller group includes at least three support rollers, and the multiple support rollers are distributed in an arc shape. The second folded portion is bent around the multiple support rollers.

[0009] A guide rail is provided between the first reverse folding section and the second traction roller group, and the forward folding section is confined within the guide rail.

[0010] The feeding device includes a gravity traction component, which includes a support base plate and a weighting roller. A first vertical support and a second vertical support are installed on the support base plate. A vertical track is located between the first vertical support and the second vertical support. The weighting roller is supported on the side of the material away from the main body of the roll. Support shafts are installed at both ends of the weighting roller, and the support shafts are limited within the vertical track.

[0011] The gravity traction assembly includes a slide block slidably connected above a support base plate. A fixing block is fixedly connected above the support base plate on the side of the slide block near the main body of the coil. A tension spring is connected between the fixing block and the slide block. The first vertical bracket and the second vertical bracket are fixedly installed on the slide block. The second vertical bracket directly or indirectly abuts against the outside of the main body of the coil.

[0012] A stop roller is rotatably connected to one side of the upper part of the second vertical support, and the stop roller abuts against the outside of the coil body.

[0013] The weighting roller is equipped with counterweights at both ends.

[0014] The present invention discloses a feeding device for stamping equipment, which has the following advantages: This device, by setting up a support roller group to form a second reverse fold, effectively releases the initial curling stress of the coiled material, preventing the strip from rebounding and deforming; the forward fold after the second traction roller group further adjusts the strip tension and simultaneously forms the downstream first reverse fold; the first reverse fold before the first traction roller group acts as a flexible traction buffer near the die end, preventing pulling or material jumping during the stamping process. The entire structure can achieve gradual leveling and multi-stage buffering of the coiled material, significantly improving feeding stability and the accuracy of the stamped product. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the coil during release according to this utility model;

[0016] Figure 2 This is a schematic diagram of the gravity traction component structure of this utility model.

[0017] In the figure: 1. First traction roller group; 2. First reverse folding part; 3. Forward folding part; 4. Guide rail; 5. Second traction roller group; 6. Conveying part; 7. Feeding rack; 8. Support roller group; 9. Second reverse folding part; 10. Abutting roller; 11. Weighting roller; 12. Support shaft; 13. First vertical bracket; 14. Slide seat; 15. Support base plate; 16. Fixing block; 17. Tension spring; 18. Second vertical bracket. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] Reference Figures 1-2 A feeding device for a stamping equipment includes a feeding rack 7 for mounting coiled material. The feeding device includes a support roller group 8, a second traction roller group 5, and a first traction roller group 1. When the coiled material is released, the material located in the support roller group 8 has a second reverse fold 9, which is opposite to the winding direction of the coiled material. When the coiled material is released, the material located downstream of the second traction roller group 5 has a forward fold 3, which is in the same direction as the winding direction of the coiled material. The material located in the first traction roller group 1 at the stamping station and between the first traction roller group 1 and the forward fold 3 has a first reverse fold 2, which is opposite to the winding direction of the coiled material and is in a naturally curved state.

[0020] The feeding device of this stamping equipment sets a series of traction roller groups and guides the bending path so that after the coil is released from the unloading frame 7, it passes through the support roller group 8, the second traction roller group 5, and the first traction roller group 1 in sequence, and forms a reasonable bending structure in the path, so as to realize the release of coiling stress and stable control of feeding tension.

[0021] After the coil is released, it first passes through the support roller group 8, which forms a path with a reverse folding effect, causing the coil to form a second reverse fold 9 at this point. The bending direction of the second reverse fold 9 is opposite to the original winding direction of the coil, thereby initially releasing the residual stress inside the coil and making it tend to be straight.

[0022] Continuing forward, the coil enters the second traction roller group 5. Downstream of the second traction roller group 5, the coil forms a positive fold 3, the bending direction of which is the same as the winding direction of the coil, to further buffer tension fluctuations.

[0023] The first traction roller group 1 is located at the stamping station, and the material strip between its front section and the forward fold 3 forms the first reverse fold 2. The first reverse fold 2 is also opposite to the winding direction and is in a natural bending state, so that the roll material forms a flexible buffer again near the stamping station, effectively absorbing the tension changes generated by the stamping cycle, and ensuring smooth and accurate feeding.

[0024] This device, by setting up a support roller group 8 to form a second reverse fold section 9, effectively releases the initial curling stress of the coiled material and avoids the material strip rebounding and deforming; the forward fold section 3 after the second traction roller group 5 further adjusts the material strip tension and simultaneously forms the downstream first reverse fold section 2; the first reverse fold section 2 before the first traction roller group 1 acts as a flexible traction buffer near the die end, preventing pulling or material jumping during the stamping process. The entire structure can achieve gradual leveling and multi-stage buffering of the coiled material, significantly improving feeding stability and stamping precision.

[0025] The curvature of the second fold 9 is less than that of the first fold 2. By setting a large fold radius, i.e., the second fold 9, the coil stress of the rolled material can be released slowly, reducing the probability of deformation during subsequent stamping.

[0026] The support roller group 8 includes at least three support rollers, which are arranged in an arc shape, and the second folding part 9 is bent around the multiple support rollers.

[0027] The coiled material is first released from the unloading frame 7 and passes through the support roller group 8 before entering the subsequent traction system. The support roller group 8 includes at least three support rollers arranged along a large arc shape to form a curved path, causing the coiled material to naturally form a second fold 9 at this position. The bending direction of the second fold 9 is opposite to the original winding direction. This structure allows for preliminary flattening of the coiled material and release of curling stress.

[0028] A guide rail 4 is provided between the first reverse folding part 2 and the second traction roller group 5, and the forward folding part 3 is limited within the guide rail 4.

[0029] The coiled material enters the second traction roller group 5. In the feeding path between the second traction roller group 5 and the first traction roller group 1, the coiled material naturally forms a positive fold 3. The direction of the positive fold 3 is consistent with the winding direction and is limited and covered by the guide rail 4, thereby ensuring that the coiled material does not deviate or twist during this section of operation, and ensuring the stability of the material feeding.

[0030] Next, the coiled material continues forward and enters the first traction roller group 1. The coiled material path located between the first traction roller group 1 and the forward folding section 3 forms the first reverse folding section 2. The bending direction of the first reverse folding section 2 is also opposite to the winding direction and is in a natural bending state. It is used to alleviate the tension fluctuation generated by the front-end traction moment during stamping, and plays a buffering and stabilizing role to ensure the feeding accuracy at the stamping station.

[0031] The feeding device includes a gravity traction component, which includes a support base plate 15 and a weighting roller 11. A first vertical support 13 and a second vertical support 18 are installed on the support base plate 15. A vertical track is located between the first vertical support 13 and the second vertical support 18. The weighting roller 11 is supported on the side of the material away from the main body of the roll. Support shafts 12 are installed at both ends of the weighting roller 11, and the support shafts 12 are limited within the vertical track.

[0032] During the feeding process, the second traction roller group 5 continuously pulls the coiled material towards the first traction roller group 1. To ensure a smooth and powerful release of the coiled material, the feeding device is equipped with a gravity traction component to assist in the active unfolding of the coiled material from the core section.

[0033] The gravity traction assembly includes a support base plate 15 and a weighting roller 11 mounted thereon. The weighting roller 11 is supported on the side of the coil away from the main body of the coil, and has support shafts 12 at both ends. The support shafts 12 are confined in a vertical track formed between a first vertical support 13 and a second vertical support 18, ensuring that the weighting roller 11 can float up and down in the vertical direction. At the start of traction, the weighting roller 11 presses down on the outer layer of the coil by its own weight and pulls the coil vertically downward from the tangent direction of the coil. As traction continues, the weighting roller 11 remains attached to the surface of the coil under its own weight, providing a stable and flexible traction force, allowing the coil to smoothly detach from the core during release.

[0034] The gravity traction assembly includes a slide block 14 slidably connected above the support base plate 15. A fixing block 16 is fixedly connected above the support base plate 15 on the side of the slide block 14 near the main body of the coil. A tension spring 17 is connected between the fixing block 16 and the slide block 14. A first vertical bracket 13 and a second vertical bracket 18 are fixedly installed on the slide block 14. The second vertical bracket 18 directly or indirectly abuts against the outside of the main body of the coil.

[0035] The first vertical support 13 and the second vertical support 18 are fixedly mounted on the slide block 14. The side of the second vertical support 18 closest to the main body of the roll can directly or indirectly abut against the surface of the roll, forming a limiting support. This structure can automatically move forward when the roll diameter decreases, ensuring that the weighting roller 11 is always in a suitable pressing position.

[0036] The upper side of the second vertical support 18 is rotatably connected to the abutment roller 10, which abuts against the outside of the coil body; the weighting roller 11 has counterweights installed at both ends.

[0037] During the feeding process, to further stabilize the release path of the coil and maintain the outer edge posture of the coil, an abutment roller 10 is rotatably connected to one side of the upper part of the second vertical support 18. The abutment roller 10 contacts the outer side of the coil body and rolls in contact with the coil in the direction of rotation by its own rotation; the rotatable connection between the abutment roller 10 and the second vertical support 18 allows it to maintain continuous adhesion as the outer diameter of the coil gradually decreases, thereby achieving effective guidance and support for the edge of the coil body. Counterweights are installed at both ends of the weighting roller 11. By increasing the mass of the roller body, the counterweights increase the pressing force of the weighting roller 11 on the surface of the coil, forming a more stable and effective gravity traction effect during the feeding process.

[0038] To improve the stability of the weighting roller 11 floating up and down, a slider that can slide up and down can be set between the support shaft 12 and the first vertical support 13 and the second vertical support 18.

[0039] In one embodiment, a conveying section 6 is provided between the second folding section 9 and the second traction roller group 5, and this conveying section 6 can be stretched into a straight state.

[0040] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any technical solution, concept, or design obtained by those skilled in the art by making equivalent substitutions or changes based on the technical solution and utility model concept disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A feeding device for a stamping equipment, comprising a feeding rack (7) for mounting coiled material, characterized in that, The feeding device includes a support roller group (8), a second traction roller group (5), and a first traction roller group (1). When the roll is released, the material located in the support roller group (8) has a second reverse fold (9), which is opposite to the winding direction of the roll. When the roll is released, the material located downstream of the second traction roller group (5) has a forward fold (3), which is the same as the winding direction of the roll. The first traction roller group (1) is located at the stamping station, and the material located between the first traction roller group (1) and the forward fold (3) has a first reverse fold (2), which is opposite to the winding direction of the roll and is in a naturally curved state.

2. The feeding device for a stamping equipment according to claim 1, characterized in that, The curvature of the second fold (9) is less than that of the first fold (2).

3. The feeding device for a stamping equipment according to claim 1, characterized in that, The support roller group (8) includes at least three support rollers, and the multiple support rollers are distributed in an arc shape. The second reverse fold (9) is bent around the multiple support rollers.

4. The feeding device for a stamping equipment according to claim 1, characterized in that, A guide rail (4) is provided between the first reverse fold (2) and the second traction roller group (5), and the forward fold (3) is limited within the guide rail (4).

5. A feeding device for stamping equipment according to any one of claims 1-4, characterized in that, The feeding device includes a gravity traction component, which includes a support base plate (15) and a weighting roller (11). A first vertical support (13) and a second vertical support (18) are installed on the support base plate (15). A vertical track is located between the first vertical support (13) and the second vertical support (18). The weighting roller (11) is supported on the side of the material away from the main body of the roll. Support shafts (12) are installed at both ends of the weighting roller (11). The support shafts (12) are limited within the vertical track.

6. A feeding device for stamping equipment according to claim 5, characterized in that, The gravity traction assembly includes a slide (14) slidably connected above the support base plate (15). A fixing block (16) is fixedly connected above the support base plate (15) on the side of the slide (14) near the main body of the coil. A tension spring (17) is connected between the fixing block (16) and the slide (14). The first vertical bracket (13) and the second vertical bracket (18) are fixedly installed on the slide (14). The second vertical bracket (18) directly or indirectly abuts against the outside of the main body of the coil.

7. A feeding device for stamping equipment according to claim 6, characterized in that, The upper side of the second vertical support (18) is rotatably connected to an abutment roller (10), which abuts against the outside of the coil body.

8. A feeding device for stamping equipment according to claim 5, characterized in that, The weighting roller (11) has counterweights installed at both ends.

Images