Initial feeding position error prevention method and continuous fine punching die
By designing the initial feed position error prevention mechanism on a continuous fine die, the limiting surface and transition surface mechanism of the tie rod and the stop pin are used to solve the problem of mold damage caused by the error in the initial feed position, ensuring the safety and continuous production , realizes the protection of molds and normal production operation.
Patent Information
- Application Number
- CN202011048685.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2020-09-29
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2040-09-29
AI Technical Summary
During the production process, continuous fine dies often cause mold damage due to the error in the initial feeding position, which affects production and causes economic losses.
Design an initial feed position error-proof mechanism, including installing a tie rod and a stop pin on the upper die, through the limiting surface and transition surface mechanism, to ensure that the material can be punched when the initial feed position is correct. If the position is wrong, the machine tool will be The protection value increases to prevent mold damage and allow adjustment of the material position until it is correct before punching.
Effectively prevent mold damage caused by wrong initial feed position, ensure safe production, simple structure and convenient operation, and avoid production interruptions and economic losses caused by wrong initial feed position.
Smart Images
Figure CN112191739B_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the field of stamping dies, and in particular relates to an initial feeding position error prevention method and a continuous fine stamping die. Background Art
[0002] The stamping die is a device used for pressure processing of materials. Its working principle is generally to drive the opening and closing surfaces of the upper die and the lower die under the action of stamping to cut, punch, extrude, bend and other shapes of the raw materials between them to form stamped parts. The precision stamping die is a new type of die in the current product manufacturing field. It is usually composed of a combination of upper and lower matching punches and dies. The punch is fixed by an upper pad and guided by a gear ring plate. The upper pad and the upper template are fixed, the gear ring plate and the middle support plate are fixed, and the die and the lower template are connected. When working, the lower die moves upward to complete the production. Continuous precision stamping die refers to a cold stamping die that, based on the precision stamping die, uses a strip of stamping raw materials in one stamping stroke on a pair of dies to complete multiple stamping processes at the same time using several different stations. After each stamping of the die, the material strip moves once at a fixed distance until the product is completed.
[0003] In the production process of continuous fine stamping dies, initial feeding position errors often occur, resulting in damage to mold parts, delaying production, affecting production delivery, and causing losses to the company. Summary of the invention
[0004] The purpose of the present invention is to provide an initial feeding position error prevention method and a continuous precision punching die. The present invention can ensure the safety of the die when the initial feeding position is wrong, has a simple structure and is easy to operate.
[0005] The technical solution adopted by the present invention is:
[0006] An initial feeding position error prevention mechanism adopts an initial feeding position error prevention mechanism, which is installed on the upper die of a continuous fine stamping die and is located between two workstations, including a pull rod and a stop pin, the pull rod can be horizontally slidably arranged on the bottom surface of the upper die plate, the stop pin can be vertically slidably arranged on the through hole of the gear ring plate, the upper end of the stop pin penetrates into the upper pad and contacts the bottom surface of the pull rod, the bottom surface of the pull rod is provided with a retreat groove corresponding to the stop pin, one side of the retreat groove in its own horizontal sliding direction is a limiting surface, and the other side is a transition surface, when the retreat groove slides horizontally, the upper end of the stop pin can slide into and out of the retreat groove along the transition surface, and the stop pin When the upper end of the pin slides out of the retreat groove, the lower end protrudes from the gear ring plate; when the upper end slides into the retreat groove, the lower end does not protrude from the gear ring plate. After the upper end of the stop pin slides into the retreat groove, it is limited by the limiting surface on one side; during the initial feeding, the lower end of the stop pin protrudes from the gear ring plate, and the material is sent to the upstream station of the initial feeding position anti-error mechanism. If the initial feeding is in the required initial feeding position, the lower end of the stop pin will not press against the material, and the machine tool protection value will be normal. After that, the lower end of the stop pin is kept retracted, and the continuous fine punching die can punch normally. If the initial feeding is not in the required initial feeding position, the lower end of the stop pin will press against the material, the machine tool protection value will increase, and punching cannot be performed.
[0007] Furthermore, at least two stop pins are provided on the gear ring plate, the stop pins are arranged perpendicular to the processing direction, and the retreat grooves correspond to the stop pins one by one.
[0008] Furthermore, two ends of the pull rod are respectively located on two sides of the gear ring plate, and operating handles are respectively provided at the two ends of the pull rod.
[0009] Furthermore, the limiting surface is a vertical surface, and the transition surface is an inclined surface.
[0010] Furthermore, the inclination angle of the transition surface is 155°.
[0011] Furthermore, the inclination angle of the transition surface adopts a rounded transition.
[0012] A continuous fine stamping die comprises an upper die and a lower die, wherein the initial feed position error prevention mechanism is installed between two workstations on the upper die.
[0013] Furthermore, the upper die and the lower die are provided with a punching station, a first trimming station, a flattening station, a second trimming station, a chamfering station, a bending station and a blanking station in sequence along the processing direction, and the initial feeding position error prevention mechanism is located between the second trimming station and the chamfering station.
[0014] The beneficial effects of the present invention are:
[0015] The present invention can ensure the safety of the mold when the initial feeding position is wrong, has a simple structure and is easy to operate. During the initial feeding, the lower end of the stop pin is first allowed to protrude from the gear ring plate, and the material is sent to the upstream station of the initial feeding position anti-error mechanism. If the initial feeding is at the required initial feeding position, the lower end of the stop pin will not press against the material, and the machine tool protection value is normal. Thereafter, the lower end of the stop pin is kept retracted, and the continuous fine punching die can punch normally. If the initial feeding is not at the required initial feeding position, the lower end of the stop pin presses against the material, the machine tool protection value increases, and the punching cannot be performed, thereby protecting the mold from damage. Thereafter, the position of the material is adjusted until the machine tool protection value is normal, and then the lower end of the stop pin is kept retracted, and the continuous fine punching die can punch normally. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a layout diagram of the continuous fine punching die in an embodiment of the present invention.
[0017] Figure 2 It is a schematic diagram of the operation of the initial feeding position error prevention mechanism during the first feeding in an embodiment of the present invention.
[0018] Figure 3 It is a schematic diagram of the operation of the initial feed position error prevention mechanism in normal production in an embodiment of the present invention.
[0019] Figure 4 It is a schematic structural diagram of a continuous fine punching die in an embodiment of the present invention.
[0020] In the figure: 1-pull rod; 2-operating handle; 3-stop pin; 4-gear ring plate; 5-upper template; 6-upper pad; 7-middle support plate; 8-die; 9-lower template; 10-upper chamfering punch; 11-lower chamfering punch; a-initial feed line position; b-wrong initial feed line position; c-stop pin position. DETAILED DESCRIPTION
[0021] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0022] like Figure 1 and Figure 4As shown, a continuous fine punching die includes an upper die and a lower die, the upper die includes an upper die plate 5, an upper pad plate 6, a middle support plate 7 and a gear ring plate 4, the lower die includes a lower die plate 9 and a concave die 8, and the upper die and the lower die are provided with a punching station, a first trimming station, a flattening station, a second trimming station, a chamfering station, a bending station and a blanking station in sequence along the processing direction; the cutting position of the punching station has an initial feed line position a, and the head of each roll of material in production is sent to the initial feed position a for punching, and the upper chamfering punch 10 and the lower chamfering punch 11 of the chamfering station protrude from the gear ring plate 4 and fall on the cutting position of the second trimming station. If the head is at the wrong initial feed line position b, when the second trimming station cuts, the upper chamfering punch 10 and the lower chamfering punch 11 of the chamfering station will partially press on the material that is not cut, causing damage to the die.
[0023] In order to prevent the mold from being damaged by the initial feeding, an initial feeding position error prevention mechanism is added between the second trimming station and the chamfering station, such as Figures 2 to 4 As shown, the initial feeding position error prevention mechanism includes a pull rod 1 and a stop pin 3. The pull rod 1 can slide horizontally on the bottom surface of the upper template 5, and the stop pin 3 can slide vertically on the through hole of the gear ring plate 4. The upper end of the stop pin 3 penetrates into the upper pad 6 and contacts with the bottom surface of the pull rod 1. The bottom surface of the pull rod 1 is provided with a retreat groove corresponding to the stop pin 3. The side surface of the retreat groove in its own horizontal sliding direction is a limiting surface and the other side surface is a transition surface. When the retreat groove slides horizontally, the upper end of the stop pin 3 can slide in and out of the retreat groove along the transition surface. When the upper end of the stop pin 3 slides out of the retreat groove, the lower end protrudes from the gear ring plate 4, and when the upper end slides into the retreat groove, the lower end does not protrude from the gear ring plate 4. After the upper end of the stop pin 3 slides into the retreat groove, it is limited by the limiting surface on one side.
[0024] like Figure 2 and Figure 3 As shown, in this embodiment, at least two stop pins 3 are provided on the gear ring plate 4, the stop pins 3 are arranged perpendicular to the processing direction, and the retreat grooves correspond to the stop pins 3 one by one.
[0025] like Figure 2 and Figure 3 As shown, in this embodiment, two ends of the pull rod 1 are respectively located on two sides of the gear ring plate 4, and operating handles 2 are respectively provided at two ends of the pull rod 1.
[0026] like Figure 2 and Figure 3 As shown, in this embodiment, the limiting surface is a vertical surface, and the transition surface is an inclined surface. In this embodiment, the inclination angle of the transition surface is 155°, and the inclination angle of the transition surface adopts a rounded transition.
[0027] The initial feed position error prevention mechanism can ensure the safety of the mold when the initial feed position a is wrong. It has a simple structure and is easy to operate. During the initial feed, first let the lower end of the stop pin 3 protrude from the gear ring plate 4, and the material is sent to the upstream station of the initial feed position error prevention mechanism. If the initial feed is in the required initial feed position, the lower end of the stop pin 3 will not press against the material, and the machine tool protection value is normal. Thereafter, the lower end of the stop pin 3 is kept retracted, and the continuous fine punching die is punched normally. If the initial feed is not in the required initial feed position, the lower end of the stop pin 3 presses against the material, the machine tool protection value increases, and the punching cannot be performed, thereby protecting the mold from damage. Thereafter, the position of the material is adjusted until the machine tool protection value is normal, and then the lower end of the stop pin 3 is kept retracted, and the continuous fine punching die is punched normally.
[0028] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the appended claims of the present invention.
Claims
1. A method for preventing errors in the initial feeding position, characterized in that: An initial feeding position error prevention mechanism is adopted, and the initial feeding position error prevention mechanism is installed on the upper die of the continuous fine stamping die and is located between two workstations, including a pull rod and a stop pin. The pull rod can slide horizontally and is arranged on the bottom surface of the upper die plate, and the stop pin can slide vertically and is arranged on the through hole of the gear ring plate. The upper end of the stop pin penetrates into the upper pad and contacts the bottom surface of the pull rod. The bottom surface of the pull rod is provided with a retreat groove corresponding to the stop pin, and one side of the retreat groove in its own horizontal sliding direction is a limiting surface and the other side is a transition surface. When the retreat groove slides horizontally, the upper end of the stop pin can slide into and out of the retreat groove along the transition surface, and the upper end of the stop pin slides out When the material is in the retreat groove, the lower end protrudes from the gear ring plate, and when the upper end slides into the retreat groove, the lower end does not protrude from the gear ring plate. After the upper end of the stop pin slides into the retreat groove, it is limited by the limit surface on one side; during the initial feeding, the lower end of the stop pin protrudes from the gear ring plate, and the material is sent to the upstream station of the initial feeding position anti-error mechanism. If the initial feeding is in the required initial feeding position, the lower end of the stop pin will not press against the material, and the machine tool protection value will be normal. After that, the lower end of the stop pin is kept retracted, and the continuous fine punching die can punch normally. If the initial feeding is not in the required initial feeding position, the lower end of the stop pin will press against the material, the machine tool protection value will increase, and punching cannot be performed.
2. The method for preventing the initial feeding position from being wrong according to claim 1, characterized in that: At least two stop pins are arranged on the gear ring plate, the stop pins are arranged perpendicular to the processing direction, and the retreat grooves correspond to the stop pins one by one.
3. The method for preventing the initial feeding position from being wrong according to claim 1, characterized in that: The two ends of the pull rod are respectively located on both sides of the gear ring plate, and the two ends of the pull rod are respectively provided with operating handles.
4. The method for preventing the initial feeding position from being wrong according to claim 1, characterized in that: The limiting surface is a vertical surface, and the transition surface is an inclined surface.
5. The method for preventing the initial feeding position from being wrong according to claim 4, characterized in that: The inclination angle of the transition surface is 155°.
6. The method for preventing the initial feeding position from being wrong according to any one of claims 1 to 5, characterized in that: The continuous fine stamping die comprises an upper die and a lower die, and the upper die and the lower die are provided with a punching station, a first trimming station, a flattening station, a second trimming station, a chamfering station, a bending station and a blanking station in sequence along the processing direction, and the initial feeding position error prevention mechanism is located between the second trimming station and the chamfering station.