Stamping die switchable positioning device

Abstract

The utility model relates to a switchable positioning device of a stamping die, which comprises at least one group of positioning device bodies, each positioning device body comprises a guide pillar sleeve and an air cylinder which are arranged in the same plane in parallel, the bottoms of the guide pillar sleeve and the air cylinder are fixed on a lower die holder of the die, and the tops of the guide pillar sleeve and the air cylinder are fixedly connected with a guide mechanism after penetrating through a mounting base which is perpendicular to the guide pillar sleeve and the air cylinder; the guide mechanism is driven by a guide column sleeve and an air cylinder and has a rising state and a falling state. According to the utility model, the functions of quick switching of mold states and multiple purposes of one mold are realized. Safety risks and shutdown losses such as manual switching, entering of people into the impression and automatic line man-machine mixed operation are avoided. And meanwhile, the requirement that multiple types of parts share the die is met, the die development cost is greatly reduced, and the product remodeling efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to a positioning device, in particular to a switchable positioning device for a stamping die, and belongs to the technical field of automobile stamping die manufacturing. Background Art

[0002] In the production process of automobile stamping parts, the stamping parts need to be drawn, trimmed, shaped, punched and other processes from steel sheet blanks under the joint action of dies and machine tools, and finally formed into parts of various shapes required. This requires the blank to be well positioned in the die to ensure the consistency of the blank position, thereby ensuring the dimensional consistency of the stamping parts. The existing positioning methods are basically fixed, connected by screws, fixed to the die body, and cannot be quickly adjusted. Only one blank size can be satisfied at a time, such as Figure 1 shown.

[0003] However, with this structure, one die can only accommodate one blank size. Even for multiple stamping parts with the same blanking dimensions and very similar external dimensions, such as left and right parts with similar shapes, or similar parts with similar appearances but different wheelbases or door types (such as sliding or non-sliding doors), multiple dies must be developed or the positioning system must be manually adjusted using screws. This results in low production efficiency, high development costs, and poor economic efficiency. Utility Model Content

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the existing technology and provide a switchable positioning device for stamping dies with a reasonable structure and convenient use, which can avoid the safety risks and the risk of downtime losses caused by workers entering the interior of the machine tool to retrieve materials, thereby greatly improving production efficiency.

[0005] In order to achieve the above purpose, the specific technical solution of the utility model is as follows: a switchable positioning device for a stamping die, comprising at least one set of positioning device bodies, wherein the positioning device bodies include guide pin sleeves and cylinders placed in parallel in the same plane, the bottoms of the two are fixed on the lower die base of the die, and the tops pass through the mounting base arranged perpendicular to the two and are connected and fixed to the guide mechanism; the guide mechanism is driven by the guide pin sleeves and the cylinder, and has a raised state and a fallen state to obtain process parts of different sizes.

[0006] Furthermore, the shape of the mounting base is the same as the mold space structure, and is designed to follow the shape to avoid interference with the mold body, including but not limited to rectangular, and can also be a special shape. The mounting base is symmetrically provided with openings for the guide column sleeve and the cylinder to pass through.

[0007] Furthermore, the guide post sleeve is composed of a guide sleeve and a guide post inside the guide sleeve. After the guide post passes through the guide post sleeve opening on the mounting base plate, the top of the guide post abuts against the bottom of the guide mechanism.

[0008] Furthermore, guide sleeve fixing nuts are provided around the guide pillars on the mounting base.

[0009] Furthermore, a connecting plate for securing the guide post and cylinder piston rod is provided between the mounting base and the guide mechanism. The connecting plate is arranged parallel to the mounting base. The guide post and cylinder piston rod are passed through the connecting plate and then welded to the bottom of the guide mechanism and secured with screws. The guide post, cylinder piston rod, and connecting plate are fixedly connected, preventing relative movement. This ensures that the piston rod is guided during reciprocating motion and does not deviate from its position during lifting and lowering.

[0010] Furthermore, the guide mechanism includes a positioning guide plate and a guide plate mounting seat; the guide plate is fixed in position by the guide plate mounting seat, and the bottom of the guide plate mounting seat is welded and fixed to the top of the guide column.

[0011] Furthermore, the guide plate consists of a faceplate, a baseplate, and reinforcing ribs. The baseplate is symmetrically provided with waist-shaped holes on either side, and is secured to the guide plate mounting base via bolts installed in the waist-shaped holes, thus allowing for adjustment. Furthermore, one end of the baseplate protrudes beyond the guide plate mounting base and connects perpendicularly to the lower portion of the faceplate, with the upper portion of the faceplate being bent inward. The reinforcing ribs are arranged along the centerline of the baseplate.

[0012] Furthermore, the bending angle is 35°.

[0013] Furthermore, the shape of one end of the reinforcing rib connected to the panel is the same as the bend.

[0014] Furthermore, the positioning device comprises at least two groups, which are arranged along the edge of the blank position on the die surface to limit the movement of the blank and ensure the blank position accuracy.

[0015] Compared with existing technologies, the present invention offers the following advantages: The positioning device of this application features stable installation, smooth guidance, and precise positioning. By rationally utilizing pneumatic and guiding principles, it enables rapid mold state switching and multi-purpose functionality. This eliminates the safety risks and downtime associated with manual switching, human entry into the mold cavity, and mixed human and machine operations on automated production lines. Furthermore, it allows for the sharing of molds for multiple parts, significantly reducing mold development costs and improving product changeover efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of an existing positioning device.

[0017] Figure 2 It is a structural diagram of the present utility model.

[0018] Figure 3 This is a diagram of the usage state of the utility model.

[0019] Figure 4 This is a usage state diagram of an embodiment of the present utility model.

[0020] Figure 5 for Figure 4 Top view of .

[0021] Description of the drawings: 1-cylinder, 2-cylinder piston rod, 3-connecting plate, 4-guide plate mounting seat, 5-positioning guide plate, 6-guide column, 7-guide sleeve fixing nut, 8-mounting base, 9-guide column sleeve. DETAILED DESCRIPTION Example

[0022] This embodiment provides a switchable positioning device for a stamping die. The structure of the device is as follows: Figure 2 As shown, it comprises nine parts, namely, a cylinder 1, a cylinder piston rod 2, a connecting plate 3, a guide plate mounting seat 4, a positioning guide plate 5, a guide post 6, a guide sleeve fixing nut 7, a mounting base 8 and a guide post sleeve 9.

[0023] The number of positioning devices in this embodiment is set according to actual production requirements, and can be one or more. They are set along the edge of the blank position on the mold surface to limit the movement of the blank and ensure the blank position accuracy.

[0024] Among them, the guide pin sleeve and the cylinder are placed parallel in the same plane, the bottom of the two are fixed on the lower mold base of the mold, and the top passes through the mounting base set perpendicular to the two and is connected and fixed to the guide mechanism; the guide mechanism is driven to rise and fall by the guide pin sleeve and the cylinder to obtain process parts of different sizes.

[0025] The shape of the mounting base is consistent with the mold space structure and is designed to follow the mold body to avoid interference. It can be rectangular or irregular. The mounting base is symmetrically provided with openings for the guide pin sleeve and the cylinder to pass through.

[0026] The guide pin sleeve consists of a guide sleeve and a guide pin inside it. After the guide pin passes through the guide sleeve opening on the mounting base, the top of the guide pin abuts against the bottom of the guide mechanism. At the same time, guide sleeve fixing nuts are also provided along the four sides of the guide pin on the mounting base.

[0027] A connecting plate, used to secure the guide post and cylinder piston rod, is located between the mounting base and the guide mechanism. After passing through the connecting plate, the guide post and cylinder piston rod are welded to the bottom of the guide mechanism and secured with screws. The guide post, cylinder piston rod, and connecting plate are fixedly connected, preventing relative movement. This ensures that the piston rod is guided during reciprocating motion and does not deviate from its position during lifting and lowering.

[0028] The guide mechanism consists of a positioning guide plate and a guide plate mounting seat. The guide plate is fixed in position by the guide plate mounting seat, and the bottom of the guide plate mounting seat is welded and fixed to the top of the guide column.

[0029] The working process of this embodiment is as follows: during mold production, the positioning device can be set to the raised state first, and a blank 11 of a certain specification is put in. The edge of the blank falls into the die cavity along the positioning guide plate. Multiple sets of positioning devices can be set around the blank, and the position is limited at the same time to ensure that the position of the blank is fixed and cannot be moved, thereby ensuring positioning stability and consistency. Then the machine tool slide moves downward, a punch is performed, and the stamping process is completed to obtain a complete process part. When producing another blank product, the positioning device can be set to the lowered state, and the blank support surface is left empty to ensure that blanks of different sizes can smoothly fall into the die cavity without interference, and the position of the other blank is limited around. Thus, stamping is carried out to obtain another complete process part.

[0030] like Figure 3 and Figure 4 As shown, this embodiment is applied in the side guard plate blanking die. The auxiliary mold adopts the pneumatic positioning device. By installing 6 sets of pneumatic switchable positioning devices, 8 sets of common positioning combinations realize the positioning of the blank in various states. The blanking molds of the left and right upper side guard plates of the V37 standard car and the right upper side guard plate of the V37 side sliding door model are shared by three products. One mold for three products greatly reduces the mold development cost. At present, the mold has passed verification and debugging and fully meets the production requirements and beat requirements. Product switching only takes a few seconds. Ordinary mold switching takes 13 minutes, which greatly reduces the product changeover time.

[0031] In addition to the above embodiments, the present invention may also have other implementations. Any technical solution formed by equivalent replacement or equivalent transformation falls within the scope of protection required by the present invention.

Claims

1. A switchable positioning device for a stamping die, characterized in that: It comprises at least one group of positioning device bodies, which include guide column sleeves and cylinders placed in parallel in the same plane, the bottoms of which are fixed on the lower die base of the mold, and the tops of which are connected and fixed to the guide mechanism after passing through a mounting base vertically arranged thereto; the guide mechanism is driven by the guide column sleeves and the cylinder, and has a raised state and a fallen state to obtain process parts of different sizes.

2. The switchable positioning device for a stamping die according to claim 1, characterized in that: The shape of the mounting base is the same as the spatial structure of the mold, including but not limited to a rectangle, and openings for the guide column sleeve and the cylinder to pass through are symmetrically opened thereon.

3. The switchable positioning device for a stamping die according to claim 2, characterized in that: The guide post sleeve is composed of a guide sleeve and a guide post inside the guide sleeve. After the guide post passes through the guide post sleeve opening on the mounting base plate, the top of the guide post abuts against the bottom of the guide mechanism.

4. The switchable positioning device for a stamping die according to claim 3 is characterized in that: On the installation base, guide sleeve fixing nuts are also arranged around the guide column.

5. The switchable positioning device for a stamping die according to claim 2, characterized in that: A connecting plate for fixing the guide column and the cylinder piston rod is also provided between the mounting base and the guide mechanism. The connecting plate is arranged parallel to the mounting base. After the guide column and the cylinder piston rod pass through the connecting plate, they are respectively welded and fixed to the bottom of the guide mechanism and fixed by screws.

6. The switchable positioning device for a stamping die according to claim 5, characterized in that: The guide mechanism comprises a positioning guide plate, a guide plate mounting seat and a connecting plate; the guide plate is fixed and positioned by the guide plate mounting seat, and the bottom of the guide plate mounting seat is fixedly welded to the top of the guide column.

7. The switchable positioning device for a stamping die according to claim 6, characterized in that: The guide plate is composed of a panel, a base plate and reinforcing ribs; waist-shaped holes are symmetrically opened on both sides of the base plate, and it is fixed to the guide plate mounting seat by bolts installed in the waist-shaped holes. One end of the guide plate protrudes out of the guide plate mounting seat and is vertically connected to the lower part of the panel, and the upper part of the panel is bent inward; the reinforcing ribs are arranged along the center line of the base plate.

8. The switchable positioning device for a stamping die according to claim 7, characterized in that: The bending angle is 35°.

9. The switchable positioning device for a stamping die according to claim 7, characterized in that: The end of the reinforcing rib connected to the panel has the same shape as the bend.

10. The switchable positioning device for a stamping die according to claim 1, characterized in that: The positioning devices are at least two groups, which are arranged along the edge of the blank position on the die surface.

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