Die with material returning structure

Abstract

The utility model discloses a die with a material returning structure, which comprises an upper die and a lower die, the upper die is provided with a punching rod, the lower die is provided with a punching hole matched with the punching rod, the upper die is further provided with a movable material returning device, the material returning device comprises a material returning block and an ejector rod, the material returning block is connected to one end of the ejector rod, and the ejector rod is connected to the other end of the ejector rod. The ejector rod is connected with the upper die in a sliding mode and drives the material returning block to move in the axial direction of the punching rod, and the material returning block is matched with the outer wall of the punching rod in a sliding mode. The movable material returning device is arranged on the upper die, and the material returning device can be used for returning materials to workpieces on the punching rods after each time of punching. The ejector rod drives the material returning block to move, the material returning block axially slides along the outer wall of the punching rod, a workpiece clamped on the punching rod can fall off, and therefore the punching efficiency is improved.

Description

Technical Field

[0001] The present application relates to a stamping die, and in particular to a die with a material stripping structure. Background Art

[0002] Stamping dies are often used on cold heading machines to shape workpieces during stamping. In existing stamping dies, after punching a hole in a workpiece, the workpiece will fit tightly on the punch rod, and the workpiece needs to be removed before the next stamping, which seriously affects the efficiency of stamping. Therefore, improvements are needed. Utility Model Content

[0003] The utility model discloses a die with a material-removing structure, which solves the problem that the existing stamping die is inconvenient to remove the workpiece after stamping, which leads to reduced processing efficiency.

[0004] A mold with a material stripping structure comprises an upper mold and a lower mold, wherein the upper mold has a punch rod, and the lower mold has a punch hole adapted to the punch rod. The upper mold also has a movable material stripping device, wherein the material stripping device comprises a material stripping block and a push rod, wherein the material stripping block is connected to one end of the push rod, and the push rod is slidably connected to the upper mold and drives the material stripping block to move axially along the punch rod, and the material stripping block slidably cooperates with the outer wall of the punch rod.

[0005] In the present application, a movable material removal device is provided on the upper die, and the material removal device can remove the workpiece on the punch rod after each punching. The ejector block is driven to move by the ejector rod, and the ejector block slides axially along the outer wall of the punch rod, so that the workpiece stuck on the punch rod can fall off, thereby improving the punching efficiency.

[0006] Several optional methods are also provided below, but they are not intended to be additional limitations on the above-mentioned overall solution, but are merely further supplements or preferences. Under the premise that there are no technical or logical contradictions, each optional method can be combined with the above-mentioned overall solution separately, and multiple optional methods can also be combined.

[0007] Optionally, the upper die includes an upper die sleeve, a punch rod fixing seat and a push rod fixing seat, the punch rod fixing seat is fixed on the upper die sleeve, the push rod fixing seat is movably connected to the upper die sleeve, one end of the punch rod is connected to the punch rod fixing seat, and the end of the push rod away from the material return block is connected to the push rod fixing seat.

[0008] Optionally, an accommodating cavity is provided in the upper die sleeve, and the punch fixing seat and the push rod fixing seat are installed in the accommodating cavity and avoid each other.

[0009] Optionally, the punch rod fixing seat includes a first fixing part and a second fixing part, the punch rod is connected to one side of the first fixing part, the second fixing part is connected to the other side of the first fixing part, the second fixing part is provided with an avoidance space adapted to the push rod fixing seat, and the push rod fixing seat is movably connected in the avoidance space.

[0010] Optionally, there are at least two push rods, and the first fixing portion and the upper mold sleeve are both provided with channels for the push rods to pass through.

[0011] Optionally, the stripping block is annular and has a through hole thereon that slidably fits with the outer periphery of the punch rod.

[0012] Optionally, the movable range of the material removal device is adapted to the length of the punch shaft.

[0013] The beneficial effects of this application are as follows:

[0014] 1. The material removal device in the present application can act on the workpiece at the end of the punch rod to make it fall off quickly, thereby improving the punching efficiency;

[0015] 2. The material removal device in the present application adopts a combined transmission method of a material removal block and a push rod. The push rod is partially arranged in the upper die sleeve and passes through the upper die sleeve to connect with the material removal block. As a result, the push rod is relatively close to the punch rod, thereby reducing the size of the material removal block. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A cross-sectional view of the present application;

[0017] Figure 2 It is a schematic diagram of the local structure of the upper mold in this application;

[0018] Figure 3 It is a structural schematic diagram of the upper mold sleeve in this application;

[0019] Figure 4 This is a schematic diagram of the connection between the second cushion block and the mandrel fixing seat in this application.

[0020] The reference numerals in the figures are described as follows:

[0021] 1. Upper die; 11. Punch rod; 12. Upper die sleeve; 121. Accommodating cavity; 13. Material withdrawal device; 131. Material withdrawal block; 132. Ejector rod; 133. Through hole; 14. First cushion block; 15. Second cushion block; 16. Ejector rod fixing seat; 17. Activity space; 18. Channel; 2. Lower die; 21. Punch hole. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0023] It should be noted that when a component is referred to as being "connected" to another component, it may be directly connected to the other component or there may be a central component. When a component is referred to as being "disposed on" another component, it may be directly disposed on the other component or there may be a central component at the same time.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0025] refer to Figure 1 In one embodiment of the present application, a mold with a material stripping structure is disclosed, comprising an upper mold 1 and a lower mold 22 that can be relatively close to and away from each other. The upper mold has a punch 11, and the lower mold 2 has a punch hole 21 adapted to the punch 11. Under the action of a cold heading machine, the punch 11 cooperates with the punch hole 21 to allow the workpiece to be extruded.

[0026] The upper die 1 has a movable material-removing device 13 , which moves along the outer wall of the punch 11 and can act on the formed workpiece to make it fall off the punch 11 .

[0027] The material stripping device 13 comprises a material stripping block 131 and a push rod 132. The material stripping block 131 is connected to one end of the push rod 132, and the push rod 132 pushes the material stripping block 131 to move. The material stripping block 131 is slidably matched with the outer wall of the punch 11.

[0028] like Figures 1 to 3 As shown in , the upper die includes an upper die sleeve 12 , and the upper die sleeve 12 has a receiving cavity 121 , and the receiving cavity 121 is used to install a punch rod fixing seat connected to the punch rod 11 and a push rod fixing seat 16 .

[0029] Among them, the push rod fixing seat 16 is movably connected in the accommodating cavity 121, the punch fixing seat and the push rod fixing seat 16 avoid each other in the accommodating cavity 121, and the push rod fixing seat 16 is connected through the cold heading machine to drive the push rod 132 to extend and retract to control the material withdrawal block 131 to withdraw the material.

[0030] Furthermore, the upper die sleeve 12 has a first end and a second end opposite to each other, the punch 11 is disposed at the first end of the upper die sleeve 12 , and the opening of the accommodating cavity 121 is disposed at the second end of the upper die sleeve 12 .

[0031] refer to Figures 2 to 3 In order to achieve the mutual avoidance of the punch rod fixing seat with the push rod fixing seat 16 during the movement, the punch rod fixing seat includes a first pad 14 and a second pad 15. The first pad 14 is circumferentially connected to the cavity wall of the accommodating cavity 121, and one side of the first pad 14 is connected to the punch rod 11, and the other side is connected to the second pad 15. The second pad 15 is tubular, and the outer wall of the second pad 15 is connected to the cavity wall of the accommodating cavity 121. The interior of the second pad 15 is an activity space 17 for the push rod fixing seat 16 to move.

[0032] Furthermore, in some embodiments, the second cushion block 15 and the top rod fixing seat 16 can be as follows: Figure 4 As shown, the cross section of the top rod fixing seat 16 can be "dish-shaped". Figure 1 and Figure 4 In the embodiment, the lower end of the push rod fixing seat 16 is used to connect the push rod 132.

[0033] Furthermore, there are at least two push rods 132 , and the first cushion block 14 and the upper mold sleeve 12 are both provided with channels 18 for the push rods 132 to pass through.

[0034] The material stripping block 131 is annular and has a through hole 133 thereon that is slidably matched with the outer circumference of the punch rod 11 , and the movable range of the material stripping device 13 is adapted to the length of the axis of the punch rod 11 .

[0035] The technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification. When the technical features in different embodiments are embodied in the same figure, it can be regarded that the figure also discloses the combination examples of the various embodiments involved.

[0036] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application.

Claims

1. A mold with a material stripping structure, comprising an upper mold and a lower mold, wherein the upper mold has a punching rod, and the lower mold has a punching hole adapted to the punching rod, wherein the mold is characterized in that: The upper mold is also provided with a movable material-removing device, which includes a material-removing block and a push rod. The material-removing block is connected to one end of the push rod, and the push rod is slidably connected to the upper mold and drives the material-removing block to move axially along the punch rod, and the material-removing block is slidably matched with the outer wall of the punch rod; The upper die comprises an upper die sleeve, a punch rod fixing seat and a push rod fixing seat, the punch rod fixing seat is fixed on the upper die sleeve, the push rod fixing seat is movably connected to the upper die sleeve, one end of the punch rod is connected to the punch rod fixing seat, and one end of the push rod away from the stripping block is connected to the push rod fixing seat; An accommodating cavity is provided in the upper die sleeve, and the punch fixing seat and the ejector fixing seat are installed in the accommodating cavity and avoid each other; The punch rod fixing seat comprises a first cushion block and a second cushion block, wherein the first cushion block is circumferentially connected to the cavity wall of the accommodating cavity, and one side of the first cushion block is connected to the punch rod, and the other side is connected to the second cushion block, the second cushion block is tubular, and the outer wall of the second cushion block is connected to the cavity wall of the accommodating cavity, and the interior of the second cushion block is an activity space for the movement of the push rod fixing seat; The cross section of the push rod fixing seat is "dish-shaped".

2. A mold with a material stripping structure according to claim 1, characterized in that: There are at least two push rods, and the first cushion block and the upper die sleeve are both provided with channels for the push rods to pass through.

3. A mold with a material stripping structure according to claim 2, characterized in that: The stripping block is annular and has a through hole thereon which is slidably matched with the outer periphery of the punching rod.

4. A mold with a material stripping structure according to claim 3, characterized in that: The movable range of the material stripping device is adapted to the length of the punch shaft.

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