Guide pillar accessory structure of hardware stamping die

Abstract

The utility model discloses a guide pillar accessory structure of a hardware stamping die, relates to the technical field of stamping dies, and aims to solve the problems that partial stress of a guide pillar is concentrated due to unbalance loading in the working process of the current die, the friction coefficient between a guide sleeve of an upper die and the guide pillar is large, and the service life of the guide pillar is prolonged. The device comprises a guide mechanism and a sliding mechanism arranged on the guide mechanism, the guide mechanism comprises a base plate, a positioning column is arranged at the upper end of a fixed column, a guide head is arranged at the upper end of the positioning column, and the sliding mechanism is arranged on the base plate. Auxiliary positioning rods are installed between the guide head and the fixing column in an array mode. The guide pillar has the advantages that lateral force and torque generated in the stamping process of the die can be better resisted, local stress concentration is avoided, deformation or damage caused by uneven stress of the guide pillar is reduced, serious local abrasion caused by long-term one-way friction can be avoided, and adaptability and reliability of the die are improved.

Description

Technical Field

[0001] This utility model relates to the field of stamping die technology, and more specifically, to a guide post accessory structure for a metal stamping die. Background Technology

[0002] Stamping dies are technological equipment that use the power of a press to plastically deform sheet metal under the action of the die's working parts, thereby obtaining parts of specific shapes and sizes. They are widely used in the automotive, electronics, and hardware industries. A set of stamping dies typically consists of two parts: an upper die and a lower die, including working parts, positioning parts, and unloading and ejection devices. Based on the nature of the process, stamping dies are classified into blanking dies, bending dies, drawing dies, etc.

[0003] In stamping dies, guide pillars guide and position the upper die during operation. However, uneven loading can occur, resulting in inconsistent force distribution on the die. This leads to localized stress concentration on the guide pillars, increasing the friction coefficient between the upper die's guide sleeve and the guide pillars, and potentially causing cracks and deformation that render the guide pillars unusable. Therefore, we propose a guide pillar accessory structure for metal stamping dies. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology, adapt to the needs of reality, and provide a guide post accessory structure for metal stamping dies. This solves the technical problem that the current die operation will have an off-center load phenomenon, which will lead to local stress concentration on the guide post. This not only makes the friction coefficient between the upper die guide sleeve and the guide post large, but also easily causes cracks and deformation of the guide post, making it unable to be used normally.

[0005] To solve the above technical problems, this utility model provides the following technical solution: a guide post accessory structure for a metal stamping die, including a guide mechanism and a sliding mechanism provided on the guide mechanism. The guide mechanism includes a base plate, a mounting end at the lower end of the base plate, a fixing post at the upper end of the base plate, a positioning post at the upper end of the fixing post, a guide head at the upper end of the positioning post, the guide head being tapered from top to bottom, and auxiliary positioning rods being arranged in an array between the guide head and the fixing post. The sliding mechanism includes a ball sleeve sleeved on the outside of the positioning post, a first ball arranged in an array on the outer surface of the ball sleeve, and a positioning plate provided on the lower outer surface of the ball sleeve.

[0006] Preferably, the ball bearing sleeve has a positioning hole, the size of which is adapted to the size of the positioning post, and the positioning post is located inside the positioning hole.

[0007] Preferably, the auxiliary positioning rod has a circular cross-section, and the auxiliary positioning rod is spirally arranged along its long axis, with the spiral degree of the auxiliary positioning rod from top to bottom forming a complete spiral.

[0008] Preferably, an upper rotating ring is rotatably mounted on the upper end of the positioning disk, and a lower rotating ring is rotatably mounted on the lower end of the positioning disk. A second ball bearing is provided between the upper rotating ring and the lower rotating ring and the positioning disk.

[0009] Preferably, a mating ring is rotatably mounted on the upper end of the base plate, a third ball bearing is provided between the mating ring and the base plate, and a buffer spring is installed between the mating ring and the lower rotating ring.

[0010] Preferably, the ball bearing sleeve has an array of spiral holes, which are located outside the positioning holes and inside the upper and lower rotating rings, and the auxiliary positioning rod is located inside the spiral holes.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. This utility model, through the design of a ball sleeve structure, uses an array of first balls arranged on the outer surface of the ball sleeve to transform the sliding friction between the ball sleeve and the upper die guide sleeve into rolling friction, greatly reducing the coefficient of friction. The ball sleeve rotates during descent, forming a structure similar to a lead screw and nut, which better resists the lateral forces and torques generated by the die during stamping, evenly distributing stress, avoiding localized stress concentration, and reducing deformation or damage to the guide post due to uneven stress. Secondly, the rotational movement of the ball sleeve can, to a certain extent, compensate for minor offsets between the guide post and guide sleeve caused by die manufacturing errors, installation errors, etc., improving the adaptability and reliability of the die. Finally, the rotating ball sleeve ensures that the inner circumferential surface of the guide sleeve receives relatively even wear, avoiding severe localized wear due to long-term unidirectional friction, thus maintaining high guiding accuracy. This solves the problem of uneven loading in current die operation, which leads to localized stress concentration on the guide post, not only resulting in a high coefficient of friction between the upper die guide sleeve and guide post but also easily causing cracks and deformation in the guide post, rendering it unusable.

[0013] 2. This utility model also incorporates an auxiliary positioning rod structure. The auxiliary positioning rod provides secondary positioning for the ball sleeve, ensuring the stability of the ball sleeve's guidance of the guide sleeve. Furthermore, the auxiliary positioning rod reduces the friction between the ball sleeve and the positioning post, minimizing wear. Finally, the auxiliary positioning rod is spirally arranged along the long axis, causing the ball sleeve to rotate during descent, thus ensuring the stability of the guide post. Attached Figure Description

[0014] Figure 1 This is a front view structural diagram of the present utility model;

[0015] Figure 2 This is a schematic diagram of the guiding mechanism structure of this utility model;

[0016] Figure 3This is a schematic diagram of the sliding mechanism structure of this utility model;

[0017] Figure 4 This is a bottom view schematic diagram of the ball bearing sleeve structure of this utility model;

[0018] Figure 5 This is a schematic diagram of one usage state of the present invention.

[0019] The following are the labels in the diagram: 100, guide mechanism; 101, fixed column; 102, base plate; 103, mounting end; 104, positioning column; 105, guide head; 106, auxiliary positioning rod; 200, sliding mechanism; 201, ball sleeve; 202, spiral hole; 203, positioning hole; 204, first ball; 205, positioning plate; 206, upper rotating ring; 207, lower rotating ring; 208, buffer spring; 209, mating ring; 210, second ball. Detailed Implementation

[0020] like Figures 1 to 5 As shown, this utility model relates to a guide post accessory structure for a metal stamping die, including a guide mechanism 100 and a sliding mechanism 200 provided on the guide mechanism 100. The guide mechanism 100 includes a base plate 102, with an installation end 103 at the lower end of the base plate 102, a fixing post 101 at the upper end of the base plate 102, a positioning post 104 at the upper end of the fixing post 101, and a guide head 105 at the upper end of the positioning post 104. The guide head 105 is tapered from top to bottom. An auxiliary positioning rod 106 is arranged in an array between the guide head 105 and the fixing post 101. The sliding mechanism 200 includes a ball sleeve 201 sleeved on the outside of the positioning post 104. A first ball 204 is arranged in an array on the outer surface of the ball sleeve 201, and a positioning plate 205 is provided on the lower outer surface of the ball sleeve 201. This invention can better resist the lateral force and torque generated by the mold during the stamping process, evenly distribute the stress, avoid local stress concentration, reduce the deformation or damage of the guide post caused by uneven force, and also avoid severe local wear caused by long-term unidirectional friction, thus improving the adaptability and reliability of the mold.

[0021] Specifically, the ball sleeve 201 has a positioning hole 203, the size of which is adapted to the size of the positioning post 104, and the positioning post 104 is located inside the positioning hole 203. The positioning post 104 is used to position the ball sleeve 201.

[0022] Furthermore, the auxiliary positioning rod 106 has a circular cross-section and is spirally arranged along its long axis, forming a complete spiral from top to bottom. The auxiliary positioning rod 106 provides secondary positioning for the ball sleeve 201, ensuring the stability of the ball sleeve 201's guidance of the guide sleeve. Secondly, the support and positioning provided by the auxiliary positioning rod 106 reduces the friction between the ball sleeve 201 and the positioning post 104, minimizing wear. Finally, the spiral arrangement of the auxiliary positioning rod 106 along its long axis causes the ball sleeve 201 to rotate during descent, ensuring the stability of the guide post.

[0023] It is worth noting that an upper rotating ring 206 is rotatably mounted on the upper end of the positioning disk 205, and a lower rotating ring 207 is rotatably mounted on the lower end of the positioning disk 205. Second ball bearings 210 are provided between both the upper and lower rotating rings 206 and the positioning disk 205. The upper rotating ring 206 facilitates the rotation of the ball bearing sleeve 201 when the guide sleeve contacts the upper rotating ring 206, preventing wear on the bottom of the guide sleeve.

[0024] It is worth mentioning that a mating ring 209 is rotatably mounted on the upper end of the base plate 102. A third ball bearing is provided between the mating ring 209 and the base plate 102, and a buffer spring 208 is installed between the mating ring 209 and the lower rotating ring 207. The arrangement of the mating ring 209 and the lower rotating ring 207 allows the ball bearing sleeve 201 to rotate, enabling the buffer spring 208 to rotate with it, thus facilitating the buffering and shock absorption of the buffer spring 208.

[0025] It is worth noting that the ball sleeve 201 has an array of spiral holes 202. The spiral holes 202 are located outside the positioning holes 203 and inside the upper rotating ring 206 and the lower rotating ring 207. The auxiliary positioning rod 106 is located inside the spiral holes 202. The spiral holes 202, together with the auxiliary positioning rod 106, allow the ball sleeve 201 to rotate during its descent. This enables the guide post to better resist the lateral forces and torques generated by the die during the stamping process, evenly distribute stress, avoid local stress concentration, and prevent severe local wear caused by long-term unidirectional friction.

[0026] Working Principle: This embodiment provides a guide post accessory structure for a metal stamping die. When the die is closed, the tapered design of the guide head 105 plays a guiding role, helping the ball sleeve 201 to quickly and accurately align with the guide sleeve. When the upper die descends, the guide head 105 first enters the guide sleeve of the upper die, guiding the die to initial positioning. Then, the outer surface of the ball sleeve 201 contacts the inner wall of the guide sleeve, and the upper rotating ring 206 at the upper end of the positioning plate 205 limits the guide sleeve, allowing the ball sleeve 201 to descend with the guide sleeve. The first ball 204 on the outer surface of the ball sleeve 201 can rotate to reduce the friction between the guide sleeve and the ball sleeve 201. The ball sleeve 201 is positioned by the positioning post 104, and then by the auxiliary positioning rod 106, which can reduce the friction between the ball sleeve 201 and the positioning post 104, further improving the positioning accuracy. The two positioning operations ensure that the ball sleeve 201 is aligned with the guide sleeve. Firstly, the auxiliary positioning rod 106 is spirally arranged, and the ball sleeve 201 has a spiral hole 202, which allows the ball sleeve 201 to rotate during descent, forming a structure similar to a lead screw nut. This structure can better resist the lateral force and torque generated by the die during stamping. The rotational movement can also compensate for the slight offset between the guide post and the guide sleeve caused by factors such as die manufacturing errors and installation errors, evenly distributing stress, avoiding local stress concentration, and reducing the deformation or damage of the guide post caused by uneven force. Finally, the rotating ball sleeve 201 ensures that the circumferential surface of the guide sleeve receives relatively even wear, avoiding severe local wear caused by long-term unidirectional friction, thereby improving the maintenance of guiding accuracy. During the stamping process, the buffer spring 208 can absorb part of the impact force during die stamping, reducing the stress on the guide post and extending the service life of the guide post.

[0027] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. A guide pillar accessory structure for a metal stamping die, characterized in that, The system includes a guide mechanism (100) and a sliding mechanism (200) mounted on the guide mechanism (100). The guide mechanism (100) includes a base plate (102), with a mounting end (103) at the lower end of the base plate (102), a fixing post (101) at the upper end of the base plate (102), a positioning post (104) at the upper end of the fixing post (101), and a guide head (100) at the upper end of the positioning post (104). 05), the guide head (105) is tapered from top to bottom, and auxiliary positioning rods (106) are arranged in an array between the guide head (105) and the fixed post (101). The sliding mechanism (200) includes a ball sleeve (201) sleeved on the outside of the positioning post (104). The outer surface of the ball sleeve (201) is arranged with a first ball (204), and the lower outer surface of the ball sleeve (201) is provided with a positioning disk (205).

2. The guide pillar accessory structure of a metal stamping die according to claim 1, characterized in that, The ball sleeve (201) has a positioning hole (203) which is adapted to the size of the positioning post (104) and the positioning post (104) is located inside the positioning hole (203).

3. The guide pillar accessory structure of a metal stamping die according to claim 2, characterized in that, The auxiliary positioning rod (106) has a circular cross-section and is spirally arranged along its long axis. The spiral degree of the auxiliary positioning rod (106) from top to bottom is a complete spiral.

4. The guide pillar accessory structure of a metal stamping die according to claim 3, characterized in that, An upper rotating ring (206) is rotatably mounted on the upper end of the positioning disk (205), and a lower rotating ring (207) is rotatably mounted on the lower end of the positioning disk (205). A second ball bearing (210) is provided between the upper rotating ring (206) and the lower rotating ring (207) and the positioning disk (205).

5. The guide pillar accessory structure of a metal stamping die according to claim 4, characterized in that, A mating ring (209) is rotatably mounted on the upper end of the base plate (102). A third ball bearing is provided between the mating ring (209) and the base plate (102). A buffer spring (208) is installed between the mating ring (209) and the lower rotating ring (207).

6. The guide pillar accessory structure of a metal stamping die according to claim 5, characterized in that, The ball sleeve (201) has an array of spiral holes (202). The spiral holes (202) are located outside the positioning hole (203) and inside the upper rotating ring (206) and lower rotating ring (207). The auxiliary positioning rod (106) is located inside the spiral holes (202).

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