Hardware stamping die for flip forward driving side punching

Abstract

The utility model discloses a hardware punch press die of upside-down normal drive side face punching, including step shaft punch, one end has the blade mouth that can punch to the material belt, drive block, with the other end fixed of step shaft punch existence blade mouth, drive block surface has the inclined plane, guide block, for step shaft punch to pass through, step shaft punch has the linear reciprocating freedom degree in guide block, power block, power block and the inclined plane contact of drive block, and utilize the oblique component force of inclined plane and make drive block move, blocking piece, and guide block common clamping material belt together, wherein, blocking piece, power block have the linear reciprocating freedom degree of mutual parallel, and the movement direction of blocking piece, power block is perpendicular with the axial direction of step shaft punch. Adopt this utility model can steady clamping material belt, prevent its displacement, and the local material of material belt around punching is still clamped when punching, so the hole punched out will not stretch deformation again, thereby reducing product failure rate.

Description

Technical Field

[0001] This utility model relates to the field of stamping dies, specifically to a hardware stamping die with inverted forward drive side punching. Background Technology

[0002] In the field of metal stamping, especially in stamping processes where the product hole is close to the forming edge, conventional movable stripping die structures, while simple in structure and high in production efficiency, are prone to deformation and elongation of the intended round hole into an elliptical hole during punching and bending. This makes it difficult to guarantee the shape and positional accuracy requirements of the hole and bending features, resulting in a high product defect rate. Existing technologies have limitations in precision control due to limitations in stamping sequence and die structure; therefore, a new type of driving and blanking structure is urgently needed to improve forming quality and stability. Utility Model Content

[0003] The problem to be solved by this utility model is to provide a metal stamping die for inverted forward drive side punching.

[0004] To solve the above problems, this utility model provides a metal stamping die with inverted forward drive side punching. To achieve the above objectives, the technical solution adopted by this utility model to solve its technical problems is as follows: A metal stamping die for inverted forward-driven side punching includes: a stepped shaft punch, one end of which has a cutting edge capable of punching a strip of material; a driving block, fixed to the other end of the stepped shaft punch with the cutting edge, the surface of the driving block having a ramp surface; a guide block through which the stepped shaft punch passes, the stepped shaft punch having a linear reciprocating degree of freedom within the guide block; a power block, the power block contacting the ramp surface of the driving block, and using the oblique component force of the ramp surface to cause the driving block to move; and a blocking block, which, together with the guide block, clamps the strip of material; wherein the blocking block and the power block have parallel linear reciprocating degrees of freedom, and the movement direction of the blocking block and the power block is perpendicular to the axial direction of the stepped shaft punch.

[0005] As a further improvement of this utility model, the stepped shaft punch includes, in one direction along the axis, a flange portion, a first cylindrical segment, a frustum segment, and a second cylindrical segment, the diameters of the flange portion, the first cylindrical segment, and the second cylindrical segment gradually decrease, and the frustum segment transitions between the first cylindrical segment and the second cylindrical segment.

[0006] As a further improvement of this utility model, the driving block includes a middle block and a tail block that are fixed to each other, and the middle block and the tail block fix the flange portion; the guide block includes a head block, and the head block includes a through head step hole, and the head step hole has a frustum cavity that can fit into the concave and convex sections of the frustum.

[0007] As a further improvement of this utility model, the material strip is L-shaped, and the same side of the driving block and the guiding block can make surface contact with the material strip.

[0008] As a further improvement of this utility model, the blocking block has a through hole to avoid the cutting edge of the step shaft punch.

[0009] As a further improvement of this utility model, the plane containing the slope surface forms a non-right angle with the axis of the step shaft punch, and the plane containing the slope surface forms a non-right angle with the direction of motion of the power block.

[0010] As a further improvement of this utility model, the edge of the guide block has an outer rounded corner to avoid the material strip.

[0011] As a further improvement of this utility model, the surface roughness of the side of the blocking block and the guide block that holds the material strip is greater than the surface roughness of the slope surface.

[0012] The advantages of using the inverted forward-driven side-punching hardware stamping die of this application are: The blocking block and the guide block together hold the strip, which can stably position the strip before punching, prevent the strip from shifting during the punching process, thereby reducing hole position deviation, helping to ensure the positional accuracy requirements of hole features and bending features, and reducing the product defect rate caused by positioning problems.

[0013] In addition, the power block, through contact with the ramp surface of the drive block, uses the oblique component force to push the drive block to move, thereby driving the step shaft punch to move. At the same time, the step shaft punch can make linear reciprocating motion within the guide block. The guide block provides precise guidance for the punch, which can effectively prevent the punch from deviating and prevent the round hole from deforming and elongating into an elliptical hole during punching, thus ensuring the integrity of the hole shape.

[0014] Finally, the movement directions of the blocking block and the power block are parallel to each other and perpendicular to the axis of the stepped punch. This design ensures that the actions of each component do not interfere with each other, the power transmission is more direct and efficient, and it can also be adapted to stamping scenarios where the hole is close to the forming edge, thus improving the processing adaptability of the mold. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a perspective view of the material strip according to one embodiment of the present invention; Figure 2 This is a structural schematic diagram of one embodiment of the present invention; Figure 3 This is a structural schematic diagram of one embodiment of the present invention; Figure 4 This is a structural schematic diagram of one embodiment of the present invention; Figure 5 This is a structural schematic diagram of one embodiment of the present invention; Figure 6 This is a structural schematic diagram of one embodiment of the present invention; Figure 7 This is a structural schematic diagram of one embodiment of the present invention.

[0017] 1-Material strip; 11-Hole; 12-Transverse section; 13-Longitudinal section; 2-Upper punch; 21-Protrusion; 3-Tail block; 31-Sloping surface; 4-Middle block; 41-Middle stepped hole; 5-Head block; 51-Head stepped hole; 511-Frustum cavity; 6-Lower punch; 61-Through hole; 7-Stepped shaft punch; 71-Flange; 72-First cylindrical section; 73-Frustum section; 74-Second cylindrical section; 8-First gap; 9-Second gap. Detailed Implementation

[0018] The present invention will be further described in detail below with reference to specific embodiments: To achieve the purpose of this utility model, a metal stamping die for inverted forward-driven side punching includes: a stepped shaft punch 7, one end of which has a cutting edge capable of punching a strip 1; a driving block, fixed to the other end of the stepped shaft punch 7 with the cutting edge, the surface of the driving block having a ramp surface 31; a guide block through which the stepped shaft punch 7 passes, the stepped shaft punch 7 having a linear reciprocating degree of freedom within the guide block; a power block, the power block contacting the ramp surface 31 of the driving block, and using the oblique component of the ramp surface 31 to propel the driving block to move; and a blocking block and the guide block together clamping the strip 1. The blocking block and the power block have parallel linear reciprocating degrees of freedom, and the movement direction of the blocking block and the power block is perpendicular to the axial direction of the stepped shaft punch 7.

[0019] The power block is the upper punch 2, which has a protrusion 21 that can contact the ramp surface 31. The blocking block is the lower punch 6. Both the upper punch 2 and the lower punch 6 are elongated blocks.

[0020] To facilitate the explanation of the structural principles Figure 2 , Figure 3 For a three-dimensional perspective, Figures 4 to 7 This is a positive perspective.

[0021] Figure 2 This represents the retracted state of the punch when the mold is open. Figure 3This represents the shape of the hole after punching is completed in the closed mold state.

[0022] The advantages of adopting the above technical solution are: it facilitates the inverted installation of the mold, utilizing the normal downward driving force of the punch press, and converting the vertical motion into horizontal motion through the internal wedge mechanism, thereby completing the punching from the side of the workpiece. This structure is particularly suitable for processing the sidewalls of parts and can improve production safety and efficiency. The blocking block and the guide block together clamp the strip 1, which can achieve stable positioning before punching, prevent the strip 1 from shifting, reduce hole position deviation, ensure the positional accuracy requirements of hole features and bending features, and reduce the product defect rate.

[0023] In some other embodiments of this utility model, the stepped shaft punch 7 includes a flange portion 71, a first cylindrical section 72, a frustum section 73, and a second cylindrical section 74 in one direction along the axis. The diameters of the flange portion 71, the first cylindrical section 72, and the second cylindrical section 74 gradually decrease, and the frustum section 73 transitions between the first cylindrical section 72 and the second cylindrical section 74.

[0024] The beneficial effects of adopting the above technical solution are: the stepped shaft punch 7 adopts a gradual structure of flange 71, first cylindrical section 72, frustum section 73 and second cylindrical section 74, which makes it easier to limit the extreme position of the stepped shaft punch movement and improves the punching stability and punch life.

[0025] In some other embodiments of this utility model, the drive block includes a middle block 4 and a tail block 3 that are fixed to each other, and the middle block 4 and the tail block 3 fix the flange portion 71. The guide block includes a head block 5, and the head block 5 includes a through head step hole 51, such as... Figure 5 As shown, the head stepped hole 51 has a frustum cavity 511 that can fit into the concave and convex sections of the frustum.

[0026] The middle block 4 has a middle stepped hole 41 that can fix the flange 71 and part of the first cylindrical section 72 in a concave-convex fit.

[0027] To clearly show the outline of the stepped shaft punch 7, and to avoid overlap and interference between the outline of the head stepped hole 51 and the outline of the stepped shaft punch 7, Figure 2 , Figure 3 The outline of the head step hole 51 is hidden within. Figure 4 , Figure 5 , Figure 6 The outline of the head stepped hole 51 is shown in the figure.

[0028] The beneficial effects of adopting the above technical solution are: the driving block fixes the flange 71 through the middle block 4 and the tail block 3, and the head block 5 of the guide block is provided with a frustum cavity 511 that matches the frustum section 73, which plays a centering role, enhances the guiding accuracy, and prevents deviation.

[0029] like Figure 1 , Figure 2 As shown, in some other embodiments of this utility model, the material strip 1 is L-shaped, and the same side of the driving block and the guide block can make surface contact with the material strip 1.

[0030] like Figure 1 As shown, the material strip 1 includes a transverse section 12 and a longitudinal section 13 that are integrally connected vertically. The hole is located on the transverse section 12, and the length of the longitudinal section 13 is greater than the length of the transverse section 12. The longitudinal section 13 is in surface contact with the head block 5, the middle block 4, and the tail block 3.

[0031] The beneficial effects of adopting the above technical solution are: the strip 1 is L-shaped, and the driving block and guide block achieve surface contact with the strip 1, which improves the positioning stability and structural rigidity during the stamping process, and is especially suitable for processing workpieces with complex shapes.

[0032] In some other embodiments of this utility model, the blocking block has a through hole 61 for avoiding the cutting edge of the step shaft punch 7.

[0033] The beneficial effects of adopting the above technical solution are: the blocking block, i.e. the lower punch 6, is provided with a through hole 61, which can effectively avoid the cutting edge of the stepped shaft punch 7, prevent interference, ensure a smooth punching process, and protect the cutting edge from damage.

[0034] In some other embodiments of this utility model, the plane containing the ramp surface 31 forms a non-right angle with the axis of the step shaft punch 7, and the plane containing the ramp surface 31 forms a non-right angle with the direction of motion of the power block.

[0035] The beneficial effects of adopting the above technical solution are: the inclined surface 31 and the axis of the step shaft punch 7 and the direction of motion of the power block are all at non-right angles, which optimizes the transmission efficiency of the inclined component force.

[0036] In some other embodiments of this utility model, the edge of the head block 5 has an outer rounded corner to avoid the material strip 1.

[0037] The L-shaped strip 1 must have a certain rounded corner at its bend, so the outer rounded corner of the head block 5 serves to avoid the outer rounded corner of the strip 1.

[0038] The beneficial effects of adopting the above technical solution are: the outer rounded corner can avoid the bend of the material strip 1, preventing interference and wear.

[0039] In some other embodiments of this utility model, the surface roughness of the side of the blocking block and the guide block that holds the material belt 1 is greater than the surface roughness of the slope surface 31.

[0040] The beneficial effects of adopting the above technical solution are: the rougher surface enhances the clamping friction, and the smoother surface ensures the sliding performance of the ramp surface 31.

[0041] The operation steps of the inverted forward-driven side punching hardware stamping die of this application are as follows: Step 1, as... Figure 4 As shown, at this point, the mold opening stroke is at its maximum, and all mold parts leave the material strip 1. Step Two: As... Figure 5 As shown, the mold begins to close, and the upper mold parts begin to contact strip 1, but the drive punch has not yet contacted the guide block. Step 3: As... Figure 6 As shown, the mold begins to close, the upper and lower molds begin to move closer together, and strip 1 is completely pressed down. Step 4: As... Figure 7 As shown, the mold is fully closed, with the upper and lower molds completely pressing the material strip 1, and the drive block drives the stepped shaft punch 7 to complete the punching.

[0042] Before doing the assignment, such as Figure 2 , Figure 4 As shown, the middle block 4 separates from the head block 5, forming a first gap 8. The presence of the first gap 8 facilitates the increase of impact force. A second gap 9, accommodating the material strip 1, is also provided between the head block 5 and the lower punch 6. As the operation progresses, the width of the second gap 9 narrows, thereby achieving partial clamping of the material strip 1. Based on this tight clamping, the stepped shaft punch 7 is used to punch holes in the clamped portion of the material strip 1. This results in the material strip 1 being punched into holes 11, while the material strip 1 material around the holes 11 is less prone to stretching and deformation because it is tightly clamped.

[0043] The inverted forward-driven side-punching hardware stamping die of this application ensures the size of the strip 1 product and improves the product yield.

[0044] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it. They should not be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the protection scope of this utility model.

Claims

1. A metal stamping die for inverted forward-driven side punching, characterized in that, include: A stepped shaft punch, one end of which has a cutting edge capable of punching holes in the strip material; A drive block is fixed to the other end of the stepped shaft punch with a cutting edge, and the surface of the drive block has a slope. A guide block through which a stepped shaft punch passes, the stepped shaft punch having linear reciprocating freedom within the guide block; The power block contacts the ramp surface of the drive block and uses the oblique component force of the ramp surface to make the drive block move. The blocking block, together with the guide block, clamps the material strip; The blocking block and the power block have parallel linear reciprocating degrees of freedom, and the movement direction of the blocking block and the power block is perpendicular to the axial direction of the step shaft punch.

2. The metal stamping die for inverted forward-driving side punching according to claim 1, characterized in that: The stepped shaft punch includes, in a unidirectional direction along the axis, a flange, a first cylindrical section, a frustum section, and a second cylindrical section. The diameters of the flange, the first cylindrical section, and the second cylindrical section gradually decrease, and the frustum section transitions between the first cylindrical section and the second cylindrical section.

3. The metal stamping die for inverted forward-driving side punching according to claim 2, characterized in that: The drive block includes a middle block and a tail block that are fixed to each other, and the middle block and the tail block fix the flange portion. The guide block includes a head block, the head block having a through head step hole, the head step hole having a frustum cavity that can fit into the concave and convex sections of the frustum.

4. The metal stamping die for inverted forward-driving side punching according to claim 1, characterized in that: The material strip is L-shaped, and the same side of the driving block and the guide block can make surface contact with the material strip.

5. The metal stamping die for inverted forward-driving side punching according to claim 1, characterized in that: The blocking block has a through hole to avoid the cutting edge of the step shaft punch.

6. The metal stamping die for inverted forward-driving side punching according to claim 1, characterized in that: The plane containing the ramp surface forms a non-right angle with the axis of the step shaft punch, and the plane containing the ramp surface forms a non-right angle with the direction of motion of the power block.

7. The metal stamping die for inverted forward-driving side punching according to claim 1, characterized in that: The guide block has rounded edges to avoid the material strip.

8. The metal stamping die for inverted forward-driving side punching according to claim 1, characterized in that: The surface roughness of the side of the blocking block and guide block that holds the material belt is greater than the surface roughness of the slope.

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