Double-sided punching die for pipe fitting

Abstract

The utility model relates to mould technical field, concretely is a kind of disposable punching die for pipe double-sided punching, including lower die holder, the upper die holder is installed in lower die holder top by first elastic member, lower die holder top one end is equipped with fixed seat, and the core rod is installed in fixed seat side surface, and the core rod top is penetrated and is equipped with several punch holes along length direction, and the punch head assembly that is mutually matched with punch hole is installed in upper die holder bottom, and two guide columns are fixedly connected in upper die holder bottom, and fixed seat is equipped with the guide slot that is mutually matched with guide column, the utility model is penetrated and is equipped with punch hole and the punch head assembly that is matched with it by setting core rod, realizes the disposable double-sided punching of pipe, need not secondary positioning, improves production efficiency, while through the cooperation of guide column and guide slot, the accuracy of upper die holder movement is guaranteed, punch precision is improved, mould abrasion is reduced, and mould service life is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, specifically a disposable punching mold for double-sided punching of pipe fittings. Background Technology

[0002] In the field of pipe fittings processing, punching is a common processing step, especially for pipe fittings that require double-sided punching, where traditional processing methods have many problems. Currently, double-sided punching of pipe fittings usually requires two positioning and two punching operations, which is not only cumbersome and inefficient, but also prone to positioning deviations due to the two punching operations, resulting in misalignment of the upper and lower holes and affecting product quality.

[0003] In addition, the poor guiding performance of traditional punching dies will affect the matching accuracy between the punch and the hole, aggravate die wear, and shorten service life. In order to solve the above problems, this utility model provides a disposable punching die for double-sided punching of pipe fittings. Utility Model Content

[0004] The purpose of this utility model is to provide a disposable punching die for double-sided punching of pipe fittings, which can realize double-sided punching of pipe fittings in one go, improve production efficiency and punching accuracy, and at the same time have good guiding performance and convenient replacement function.

[0005] To achieve the above objectives, the technical solution provided by this utility model is as follows: A disposable punching die for double-sided punching of pipe fittings includes a lower die base, an upper die base mounted on the top of the lower die base via a first elastic element, a fixed seat mounted on one end of the top of the lower die base, a mandrel mounted on one side of the fixed seat, a plurality of punch holes extending through the top of the mandrel along its length, a punch assembly cooperating with the punch holes mounted on the bottom of the upper die base, two guide posts fixedly connected to the bottom of the upper die base, and a guide groove cooperating with the guide posts provided on the fixed seat.

[0006] Preferably, one end of the mandrel is inserted into the inner cavity of the fixing seat, and a fixing bolt is threadedly connected to the top of the fixing seat, with the fixing bolt inserted into the mandrel.

[0007] Preferably, the mandrel sidewall is provided with a positioning shoulder for positioning the mandrel.

[0008] Preferably, a second elastic element is connected between the upper mold base and the fixed base.

[0009] Preferably, a lower fixing plate is installed on the top of the lower die base, and several limiting blocks are symmetrically installed on the top of the lower fixing plate on both sides. An upper fixing plate is fixedly connected to the top of the limiting blocks. The mandrel is located between the lower fixing plate, the upper fixing plate and the limiting blocks on both sides. Both the upper fixing plate and the lower fixing plate are provided with a first through hole that cooperates with the punching.

[0010] Preferably, the top side of the lower fixing plate and the side of the two limiting blocks that are close to each other are provided with chamfers to facilitate the insertion of the pipe fittings.

[0011] Preferably, the lower die base includes a base plate, two vertical plates are installed parallel to each other on the top of the base plate, a support plate is installed on the top of the vertical plates, and the support plate has a second through hole that cooperates with the punching hole.

[0012] Preferably, the top of the lower mold base is detachably equipped with several abutment blocks for limiting the ends of the tube fittings along the length of the mandrel.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention achieves one-time double-sided punching of pipe fittings by setting a punch through the mandrel and a matching punch assembly, eliminating the need for secondary positioning and improving production efficiency. At the same time, the cooperation between the guide post and the guide groove ensures the accuracy of the upper die base movement, improves punching precision, reduces die wear, and extends the die's service life. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the first angle structure of the punching die of this utility model; Figure 2 This is a schematic diagram of the second angle structure of the punching die of this utility model; Figure 3 This is a schematic diagram of the front section structure of the punching die of this utility model; Figure 4 for Figure 3 A magnified schematic diagram of the structure at point A in the middle.

[0016] The attached diagram lists the components represented by each number as follows: 1. Lower die base; 101. Base plate; 102. Vertical plate; 103. Support plate; 2. First elastic element; 3. Upper die base; 4. Fixed base; 41. Fixing bolt; 5. Mandrel; 6. Punch; 7. Guide post; 8. Second elastic element; 9. Lower fixed plate; 10. Limiting block; 11. Upper fixed plate; 12. Abutting block; 13. Punch assembly. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0018] like Figure 1-4 As shown: Embodiment 1 of this utility model is as follows: A disposable punching die for double-sided punching of pipe fittings includes a lower die base 1, an upper die base 3 mounted on the top of the lower die base 1 via a first elastic element 2, a fixed seat 4 mounted on one end of the top of the lower die base 1, a mandrel 5 mounted on one side of the fixed seat 4, a plurality of punch holes 6 extending through the top of the mandrel 5 along its length, a punch assembly 13 (consisting of a mounting plate and a plurality of punches, with the mounting plate mounted on the bottom of the upper die base and the punches mounted on the mounting plate) and two guide posts 7 fixedly connected to the bottom of the upper die base 3, and the fixed seat 4 having openings that cooperate with the guide posts 7.

[0019] As can be seen from the above description, this utility model achieves one-time double-sided punching of pipe fittings by setting a punch through the mandrel and a matching punch assembly, eliminating the need for secondary positioning and improving production efficiency; at the same time, the cooperation between the guide post and the guide groove ensures the accuracy of the upper die base movement, improves punching precision, reduces die wear, and extends the die service life.

[0020] Specifically, one end of the mandrel 5 is inserted into the inner cavity of the fixing seat 4, and the top of the fixing seat 4 is threaded with a fixing bolt 42, which is inserted into the mandrel 5.

[0021] As can be seen from the above description, the mandrel is inserted into the inner cavity of the fixed seat and fixed by the fixing bolt, making the installation of the mandrel more stable. At the same time, it is easy to disassemble and replace the mandrel, which can adapt to the punching requirements of different specifications of pipe fittings and improve the versatility of the mold.

[0022] Specifically, the side wall of the mandrel 5 is provided with a positioning shoulder for positioning the mandrel 5.

[0023] As can be seen from the above description, the positioning shoulder can quickly locate the installation position of the mandrel in the fixed seat, ensure the consistency of mandrel installation, and reduce punching errors caused by deviations in the mandrel installation position.

[0024] Specifically, a second elastic element 8 connects the upper mold base 3 and the fixed base 4.

[0025] As can be seen from the above description, the second elastic element can provide auxiliary elastic force when the upper die seat is reset, making the upper die seat reset faster and more smoothly. At the same time, it can buffer the punching force during the punching process and protect the die parts.

[0026] Specifically, a lower fixing plate 9 is installed on the top of the lower mold base 1. Several limiting blocks 10 are symmetrically installed on the top of the lower fixing plate 9 on both sides. An upper fixing plate 11 is fixedly connected to the top of the limiting blocks 10. The mandrel 5 is located between the lower fixing plate 9, the upper fixing plate 11 and the limiting blocks 10 on both sides. The upper fixing plate 11 and the lower fixing plate 9 are both provided with a first through hole that cooperates with the punching hole 6.

[0027] As can be seen from the above description, the space formed by the lower fixed plate, the upper fixed plate, and the limiting block provides good support and limitation for the pipe fitting, preventing it from shifting during the punching process and further improving the punching accuracy; the setting of the first through hole provides a movement channel for the punch, ensuring the smooth progress of the punching process.

[0028] Specifically, the top side of the lower fixing plate 9 and the side of the two limiting blocks 10 that are close to each other are provided with chamfers to facilitate the insertion of pipe fittings.

[0029] As can be seen from the above description, the chamfering facilitates the insertion of pipe fittings, reduces friction and collision between pipe fittings and fixed plates and limit blocks, makes it easier for operators to load materials quickly, and improves operating efficiency.

[0030] Specifically, the lower mold base 1 includes a base plate 101, two vertical plates 102 are installed parallel to each other on the top of the base plate 101, a support plate 103 is installed on the top of the vertical plates 102, and the support plate 103 has a second through hole that cooperates with the punching hole 6.

[0031] As can be seen from the above description, the lower die base adopts a combination structure of base plate, vertical plate and support plate, which reduces the weight of the die and lowers the material cost while ensuring the overall strength of the lower die base; the second through hole on the support plate provides a discharge channel for punching waste, avoiding the accumulation of waste and affecting the punching process.

[0032] Specifically, the top of the lower mold base 1 is detachably equipped with several abutment blocks 12 for limiting the ends of the tube fittings along the length of the mandrel 5.

[0033] As can be seen from the above description, the abutment block can limit the end of the pipe fitting, ensuring the positioning accuracy of the pipe fitting on the mandrel. At the same time, the abutment block is detachable and can be adjusted or replaced according to pipe fittings of different lengths, which improves the applicability of the mold.

[0034] The specific usage process of the above mold is as follows: In use, the pipe to be punched is placed on the mandrel 5, and the end of the pipe abuts against the abutment block 12 to achieve axial positioning. The lower fixing plate 9, the upper fixing plate 11 and the limiting block 10 limit the pipe radially to prevent the pipe from shaking.

[0035] The stamping equipment is started (the mold is fixedly mounted on the stamping machine). The upper mold base 3 moves downward under the driving force, and the first elastic element 2 is compressed. The guide post 7 at the bottom of the upper mold base 3 slides along the fixed seat 4 to ensure the accuracy of the movement of the upper mold base 3. At the same time, the second elastic element 8 is compressed, generating a reverse elastic force.

[0036] As the upper die holder 3 descends, the punch assembly at the bottom of the upper die holder 3 passes through the first through hole of the upper fixed plate 11 and punches the tube fitting sleeved on the mandrel 5. After passing through the tube fitting, the punch enters the punch hole 6 of the mandrel 5 to complete the punching action. The waste generated by punching is discharged through the first through hole of the lower fixed plate 9 and the second through hole of the support plate 103.

[0037] After punching is completed, the driving force disappears, and the upper die holder 3 returns to its original position upward under the elastic force of the first elastic element 2 and the second elastic element 8. The guide post 7 slides upward, and the punch assembly disengages from the tube and the mandrel 5.

[0038] When it is necessary to replace the mandrel 5 with a different specification, unscrew the fixing bolt 42 on the top of the fixing seat 4 to pull the mandrel 5 out of the inner cavity of the fixing seat 4. After replacing the new mandrel 5, fix it with the fixing bolt 42. The positioning shoulder of the mandrel 5 ensures the accuracy of its installation position.

[0039] When processing pipe fittings of different lengths, the position of the abutment block 12 can be disassembled and adjusted to achieve precise positioning of pipe fittings of different lengths.

[0040] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that modifications may be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A disposable punching die for double-sided punching of pipe fittings, comprising a lower die base (1), wherein an upper die base (3) is mounted on the top of the lower die base (1) via a first elastic element (2), characterized in that: The lower die base (1) is equipped with a fixed seat (4) at one end of its top. A mandrel (5) is installed on one side of the fixed seat (4). Several punch holes (6) are opened through the top of the mandrel (5) along its length. A punch assembly (13) that cooperates with the punch holes (6) is installed at the bottom of the upper die base (3). Two guide posts (7) are fixedly connected to the bottom of the upper die base (3). A guide groove that cooperates with the guide posts (7) is opened on the fixed seat (4).

2. The disposable punching die for double-sided punching of pipe fittings according to claim 1, characterized in that: One end of the core rod (5) is inserted into the inner cavity of the fixing seat (4), and the top of the fixing seat (4) is threaded with a fixing bolt (42), and the fixing bolt (42) is inserted into the core rod (5).

3. The disposable punching die for double-sided punching of pipe fittings according to claim 2, characterized in that: The mandrel (5) has a positioning shoulder on its side wall for positioning the mandrel (5).

4. A disposable punching die for double-sided punching of pipe fittings according to claim 1, characterized in that: A second elastic element (8) is connected between the upper mold base (3) and the fixed base (4).

5. A disposable punching die for double-sided punching of pipe fittings according to claim 1, characterized in that: The lower die base (1) is equipped with a lower fixing plate (9) on the top. Several limiting blocks (10) are symmetrically installed on the top of the lower fixing plate (9) on both sides. An upper fixing plate (11) is fixedly connected to the top of the limiting blocks (10). The mandrel (5) is located between the lower fixing plate (9), the upper fixing plate (11) and the limiting blocks (10) on both sides. The upper fixing plate (11) and the lower fixing plate (9) are both provided with a first through hole that cooperates with the punch (6).

6. A disposable punching die for double-sided punching of pipe fittings according to claim 5, characterized in that: The top side of the lower fixing plate (9) and the side of the two limiting blocks (10) that are close to each other are all provided with chamfers to facilitate the insertion of pipe fittings.

7. A disposable punching die for double-sided punching of pipe fittings according to claim 1, characterized in that: The lower mold base (1) includes a base plate (101), and two vertical plates (102) are installed parallel to each other on the top of the base plate (101). A support plate (103) is installed on the top of the vertical plate (102), and the support plate (103) has a second through hole that cooperates with the punch (6).

8. A disposable punching die for double-sided punching of pipe fittings according to claim 1, characterized in that: The lower mold base (1) has several abutment blocks (12) that are detachably installed on the top along the length of the mandrel (5) for limiting the ends of the pipe fittings.

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