CN205200333U - Elastic unloading structure applied to multi-station progressive die - Google Patents

Abstract

The utility model relates to an elastic unloading structure applied to a multi-station progressive die, which has a rectangular spring installed on an upper die base, an unloading spring top block arranged at the bottom of the rectangular spring, and an unloading spring top block arranged on the unloading spring top. The top block of the unloading plate at the bottom of the block, the unloading fixed plate fixed on the bottom of the unloading spring top block through fasteners, the unloading plate located at the bottom of the unloading fixed plate and fixed on the lower mold base through fasteners, and the unloading plate located at the bottom of the unloading fixed plate The L-shaped stop block on the periphery of the material fixing plate is fixed on the upper mold base through fasteners. The section of the unloading fixing plate is T-shaped, and the unloading fixing plate and the L-shaped stop block are attached to each other; the elastic unloading structure also has Precision ball guide assemblies. When the multi-station progressive die is stamped on a high-speed punching machine, it can meet the requirements of smooth unloading, stable pressing, high mold guiding precision, small punch protection, and partial forming of formed stamping parts. At the same time, it can achieve precision stamping. The technical requirements of product parts and the purpose of extending the service life of the mold.

Description

An Elastic Unloading Structure Applied to Multi-station Progressive Die

technical field

The utility model relates to the technical field of moulds, in particular to an elastic unloading structure applied to a multi-station progressive die.

Background technique

In the multi-station progressive die, the unloading structure mainly plays the role of unloading, pressing and guiding. The unloading structure mainly has two forms: elastic unloading structure and fixed unloading structure.

The materials for stamping products with multi-station progressive dies for high-speed punching machines generally use strips or strips. Before high-speed stamping, the strips or strips must be completely compressed to prevent displacement and plasticity of stamping materials during high-speed stamping. Deformation, so most of the multi-station progressive die structure adopts elastic unloading structure, and less uses fixed unloading structure. The elastic unloading structure is suitable for high-speed automatic stamping product parts, and the punched products have the characteristics of good flatness and high dimensional accuracy.

Utility model content

The technical problem to be solved by the utility model is to provide an elastic unloading structure applied to the multi-station progressive die. Stability, high mold guiding precision, small punch for protection, partial forming of formed stamping parts, etc., at the same time, it can meet the technical requirements of precision stamping product parts and prolong the service life of the mold.

The technical scheme adopted by the utility model to solve the technical problem is: an elastic unloading structure applied to the multi-station progressive die, which has a rectangular spring installed on the upper die base, and a discharge valve arranged at the bottom of the rectangular spring. Spring top block, unloading plate top block arranged at the bottom of the unloading spring top block, unloading fixed plate fixed on the bottom of the unloading spring top block by fasteners, located at the bottom of the unloading fixed plate and fixed on the bottom by fasteners The unloading plate on the mold base and the L-shaped stop block located on the periphery of the unloading fixed plate and fixed on the upper mold base by fasteners. The type limit blocks are attached to each other; the elastic unloading structure also has a precision ball guide assembly.

Further, in the above technical solution, when the high-speed punch press reaches the bottom dead center, that is, the mold is in a closed state, the unloading spring top block and the unloading plate top block transmit the pressure of the rectangular spring to the punching bar for pressing The unloading fixed plate and the unloading plate of the material, at this time, the unloading fixed plate is not in contact with the L-shaped limit block.

Further, in the above technical solution, when the high-speed punch leaves the bottom dead center and returns to the top dead point, that is, the mold is in an open state, and the unloading spring top block and the unloading plate top block drive the unloading under the heavy load of the rectangular spring. The fixed plate and the unloading plate unload the punched strips that are stuck on the punching punch during punching. At this time, the unloading fixed plate is in contact with the L-shaped stop block.

Further, in the above technical solution, the precision ball guide assembly includes a guide post connecting the upper die base and the lower die base, an upper guide sleeve and a lower guide sleeve respectively sleeved on the upper and lower ends of the guide post, The upper retaining ring between the guide sleeves, the lower retaining ring between the guide post and the lower guide sleeve, the upper spring located on the upper part of the upper retaining ring and the lower spring located at the lower part of the lower retaining ring.

The beneficial effects of the utility model are: it is specifically applied in the structure of high-speed stamping precision multi-station progressive die, and is also applicable to the structure of other common cold stamping dies, and the elastic unloading structure is adopted on the multi-station progressive die, which can When stamping precision product parts on a high-speed punching machine, it is especially suitable for mass production of thin metal material parts with high flatness requirements. The punched products have the characteristics of good flatness and high dimensional accuracy; unloading The structure adopts the elastic element of strong rectangular spring suitable for high-speed stamping, adopts the L-shaped limit block of the contour limit block and the guide assembly of precision ball-type guide post and guide sleeve, so that the unloading structure can play a role in pressing the material during high-speed stamping. Stability, local forming, precise guidance, protection of the punch, precise unloading, etc., to ensure the stability of the unloading structure, large pressing force, and smooth unloading of the multi-station progressive die during high-speed stamping. To ensure the dimensional accuracy requirements of stamping parts, it is also suitable for the needs of mass production of stamping parts, and is conducive to improving the service life of multi-station progressive dies.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Fig. 1 is a structural representation one of the utility model;

Fig. 2 is the second structural diagram of the utility model.

The labels in the accompanying drawings are: 1, upper mold base, 2, L-shaped stop block, 3, unloading fixed plate, 4, unloading plate, 5, guide push rod, 6, spring, 7, screw plug, 8, Lower mold seat, 9, lower spring, 10, lower mold guide sleeve, 11, lower retaining ring, 12, lower backing plate, 13, die fixing plate, 14, punching die, 15, guide post, 16, pressing plate , 17, punching punch, 18, upper retaining ring, 19, upper die guide sleeve, 20, upper spring, 21, washer, 22, pad head, 23, screw plug, 24, punch fixing plate, 25, upper backing plate , 26, rectangular spring, 27, screw plug, 28, unloading spring top block, 29, unloading plate top block, 30, punching strip material.

detailed description

Now in conjunction with accompanying drawing, the utility model is described in further detail. These drawings are all simplified schematic diagrams, and only schematically illustrate the basic structure of the utility model, so they only show the configurations related to the utility model.

See Figure 1 and Figure 2, the utility model is an elastic unloading structure applied to a multi-station progressive die, which has a rectangular spring 26 installed on the upper die base 1, and an unloading spring arranged at the bottom of the rectangular spring 26 Top block 28, the discharge plate top block 29 that is arranged on the bottom of the discharge spring top block 28, the discharge fixed plate 3 fixed on the bottom of the discharge spring top block 28 by fasteners, is located at the bottom of the discharge fixed plate 3 and passes through Fasteners are fixed on the unloading plate 4 on the lower mold base 8 and the L-shaped stop block 2 located on the periphery of the unloading fixed plate 3 and fixed on the upper mold base 1 by fasteners. The section of the unloading fixed plate 3 is T font, the unloading fixed plate 3 and the L-shaped stop block 2 are attached to each other; the elastic unloading structure also has a precision ball-type guide assembly. The precision ball guide assembly includes a guide post 15 connecting the upper die base 1 and the lower die base 8, an upper guide sleeve 19 and a lower guide sleeve 10 respectively sleeved on the upper and lower ends of the guide post 15, and a guide post 15 and an upper guide sleeve 19. The upper retaining ring 18 between them, the lower retaining ring 11 between the guide post 15 and the lower guide sleeve 10, the upper spring 20 located on the upper retaining ring 18 and the lower spring 9 located at the lower retaining ring 11 bottom.

As shown in Fig. 1, when the high-speed punch press reaches the bottom dead center, that is, the mold is in a closed state, and the punched strip 30 is tightly pressed by the unloading structure composed of the unloading fixed plate 3 and the unloading plate 4. The tightening force comes from the rectangular spring 26 in the upper die base 1. The rectangular spring 26 is a strong spring used for high-speed stamping. The pressure of the rectangular spring 26 is transmitted to the discharge structure through the discharge spring top block 28 and the discharge plate top block 29. , That is, the discharge spring top block 28 and the discharge plate top block 29 transmit the pressure of the rectangular spring 26 to the discharge fixed plate 3 and the discharge plate 4 for compressing the punched strip. After the punching strip 30 is compressed, the punching punch 17 on the mold enters the punching die 14 under the action of the punching force, and the material is punched. Lower mold guide sleeve 10, upper mold guide sleeve 19, lower retaining ring 11, upper retaining ring 18, lower spring 9 and upper spring 20 form a precision ball guide structure to ensure. At this time, the unloading device is in a free state, and the unloading fixed plate 3 is not in contact with the L-shaped stop block 2, so that the punched product parts have the characteristics of high flatness and good dimensional accuracy of stamped parts.

As shown in Figure 2, when the high-speed punch leaves the bottom dead point and returns to the top dead point, the mold is in the open state. At this time, the unloading structure is stuck on the punching punch 17 when punching under the action of the heavy load of the unloading rectangular spring 26. The punched strip 30 on the top is unloaded, that is, the unloading spring top block 28 and the unloading plate top block 29 drive the unloading fixed plate 3 and the unloading plate 4 under the heavy load of the rectangular spring 26 to be stuck in the The strip material on the punching punch 17 is unloaded, and the purpose of unloading quickly and smoothly under the situation of high-speed stamping is reached. At this time, the unloading fixed plate 3 contacts with the L-shaped stop block 2.

Inspired by the above-mentioned ideal embodiment according to the utility model, and through the above-mentioned description content, relevant staff can completely make various changes and modifications within the scope of not deviating from the technical idea of the utility model. The technical scope of this utility model is not limited to the content in the description, but must be determined according to the scope of the claims.

Claims (4)

1. An elastic unloading structure applied to a multi-station progressive die, characterized in that it has a rectangular spring (26) installed on the upper die base (1), an unloading spring (26) arranged at the bottom of the rectangular spring (26) Material spring top block (28), the discharge plate top block (29) that is arranged on the bottom of the discharge spring top block (28), the discharge fixed plate (29) fixed on the bottom of the discharge spring top block (28) by fasteners 3), the unloading plate (4) located at the bottom of the unloading fixed plate (3) and fixed on the lower mold base (8) by fasteners, and the unloaded fixed plate (3) located on the periphery and fixed on the upper die base by fasteners The L-shaped stop block (2) on the mold base (1), the section of the unloading fixed plate (3) is T-shaped, and the unloaded fixed plate (3) and the L-shaped stop block (2) are attached to each other; The elastic unloading structure also has a precision ball guide assembly. 2. An elastic unloading structure applied to a multi-station progressive die according to claim 1, characterized in that: when the high-speed punch press reaches the bottom dead point, the mold is in a closed state, and the unloading spring tops The block (28) and the stripping plate top block (29) transmit the pressure of the rectangular spring (26) to the unloading fixed plate (3) and the unloading plate (4) for compressing the punched strip (30), At this moment, the unloading fixed plate (3) does not contact with the L-shaped stop block (2). 3. A kind of elastic unloading structure applied to the multi-station progressive die according to claim 1, characterized in that: when the high-speed punch leaves the bottom dead point and returns to the top dead point, the mold is in an open state, and the unloading The material spring top block (28) and the discharge plate top block (29) drive the discharge fixed plate (3) and the discharge plate (4) under the heavy load of the rectangular spring (26) to be stuck on the punching punch during punching. The punching strip (30) on (17) is unloaded, and at this moment, the unloading fixed plate (3) contacts with the L-type stop block (2). 4. An elastic unloading structure applied to a multi-station progressive die according to claim 1, characterized in that: the precision ball guide assembly includes a connection between the upper mold base (1) and the lower mold base (8 ), the upper guide sleeve (19) and the lower guide sleeve (10) respectively sleeved at the upper and lower ends of the guide post (15), and the upper guide sleeve (10) located between the guide post (15) and the upper guide sleeve (19) The upper retaining ring (18), the lower retaining ring (11) between the guide post (15) and the lower guide sleeve (10), the upper spring (20) on the upper part of the upper retaining ring (18) and the lower retaining ring ( 11) lower spring (9) at the bottom.