Stainless steel water pipe composite forming die
By designing stainless steel water pipe composite forming molds, using the cooperation of sliders and limit blocks, a single forming of different shapes at both ends of the water pipe is achieved, solving the problems of poor positioning accuracy and low production efficiency in the prior art, and improving product quality and production efficiency.
Patent Information
- Application Number
- CN202420642576.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-29
- Publication Date
- 2025-03-04
- Estimated Expiration
- 2034-03-29
AI Technical Summary
When processing water pipes of different shapes at both ends, the prior art has poor positioning accuracy, low product qualification rate, low production efficiency and equipment utilization rate.
A stainless steel water pipe composite forming mold is designed, including a lower mold, an upper mold, a slider, a limit block, a punch and a limit pin. Through the cooperation of the slider and a limit block, a single forming of different shapes at both ends of the water pipe is achieved.
It realizes one-time molding of different shapes at both ends of the water pipe, improves production efficiency, enhances positioning accuracy, and ensures product quality.
Smart Images
Figure CN222551819U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of water pipe processing, in particular to a composite forming die for a stainless steel water pipe. Background Art
[0002] like Figures 1 to 3 As shown, currently when processing water pipes with different shapes at both ends, one end of the water pipe is usually formed into a trumpet shape (such as Figure 2 As shown), and then clamp it again to form the other end of the pipe (as shown Figure 3 As shown), a step is machined.
[0003] However, the use of secondary clamping will result in poor positioning accuracy, low product qualification rate, low production efficiency and low equipment utilization. Utility Model Content
[0004] The utility model aims to overcome the shortcomings of the prior art and provide a stainless steel water pipe composite forming die, which can realize one-time forming of water pipes with different processing requirements at both ends, thereby improving production efficiency.
[0005] The purpose of the utility model is achieved through the following technical solutions: This stainless steel water pipe composite forming die includes:
[0006] The lower die is fixed on the lower base, and the lower slider is axially slidably installed on the lower die;
[0007] The upper mold is fixed on the upper base, and an upper slider is slidably installed on the upper mold along the axial direction. When the upper mold and the lower mold are closed, the upper slider cooperates with the lower slider to form a combination body, and a molding cavity for placing the water pipe to be processed is provided in the combination body, and a second molding groove is provided in the molding cavity. The combination body extends outward along the axial direction to form a flange, and the front end of the water pipe extends out of the flange;
[0008] A punch is axially slidably disposed on one side close to the flange and matched with the flange concave-convex to drive the assembly to slide relative to the upper die and the lower die, and a first forming groove is provided in the punch; and
[0009] The limiting pin is fixedly mounted on the lower base, and one end of the limiting pin extends into the forming cavity to support the rear end of the water pipe.
[0010] As a further technical solution, the lower die and the upper die are both provided with sliding grooves, and the lower slider and the upper slider are placed in the corresponding sliding grooves and are slidably connected by springs.
[0011] As a further technical solution, a limit block is provided on one side of the lower die and the upper die facing the punch, and the limit block is stopped at the mouth of the slide groove.
[0012] As a further technical solution, slider strips are fixedly installed on the inner walls on both sides of the slide groove, and the lower slider, the upper slider and the corresponding slider strips are limited by steps.
[0013] As a further technical solution, first slots are provided at corresponding positions of the lower base and the upper base, wherein a base positioning block is installed on the first slot of the lower base, which is used to cooperate with the first slot of the upper base to achieve positioning of the lower base and the upper base when the mold is closed; large pin holes are provided at corresponding positions of the lower mold and the upper mold, wherein large positioning pins are installed in the large pin holes of the lower mold, which are used to cooperate with the large pin holes of the upper mold to achieve positioning of the lower mold and the upper mold when the mold is closed; small pin holes are provided at corresponding positions of the lower slider and the upper slider, wherein small positioning pins are installed in the small pin holes of the lower slider, which are used to cooperate with the small pin holes of the upper slider to achieve positioning of the lower slider and the upper slider when the mold is closed.
[0014] As a further technical solution, the forming cavity is formed by closing water pipe accommodating grooves provided on the lower slider and the upper slider, and a second forming groove is provided on the inner wall of the water pipe accommodating groove.
[0015] As a further technical solution, one end of the punch is fixedly connected to the punch base through a punch cover, and the other end of the punch is provided with a flange positioning groove matching the flange; a core rod mounting hole for inserting the punch core rod is provided in the punch, and the core rod mounting hole is connected with the flange positioning groove through a connecting hole, and the first forming groove is arranged at the connection between the connecting hole and the flange positioning groove; when the punch is molded with the flange, the tip of the punch core rod passes through the connecting hole and the first forming groove in turn and extends into the water pipe accommodating groove to position the center of the water pipe.
[0016] As a further technical solution, a first pin groove is opened at the corresponding positions of the lower mold and the upper mold, and a second pin groove is opened at the corresponding positions of the lower slider and the upper slider. The first pin groove and the second pin groove are used to position the first diameter narrowing section of the limit pin, and the second diameter narrowing section of the limit pin extends into the water pipe accommodating groove.
[0017] As a further technical solution, a second slot is provided on the lower base for fixing and installing a limit pin fixing block, and the limit pin is connected and fixed to the limit pin fixing block via a threaded section.
[0018] As a further technical solution, the first forming groove is a trumpet-shaped groove, and the second forming groove is a step-shaped pit.
[0019] The beneficial effects of the utility model are:
[0020] 1. The first forming groove and the second forming groove are respectively arranged in the forming cavity and the punch, which can realize the forming of different shapes at both ends of the water pipe in one stamping process without secondary clamping, greatly improving the production efficiency;
[0021] 2. The upper and lower sliders are limited by the limit blocks, and the slider pressure strips are used to tighten the limit, which ensures the stability of the mold during operation and ensures smooth stamping production;
[0022] 3. The mold is equipped with large and small positioning pins and base positioning blocks to achieve positioning during mold closing, improve positioning accuracy and ensure product quality;
[0023] 4. The tip of the punch core rod can be inserted into the water pipe accommodating groove to locate the center of the water pipe to prevent shaking when the water pipe is punched. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 It is a schematic diagram of the structure of a water pipe to be processed in the prior art.
[0025] Figure 2 This is a schematic diagram of the structure of the water pipe after one-time molding.
[0026] Figure 3 This is a schematic diagram of the structure of the water pipe after secondary molding.
[0027] Figure 4 It is a three-dimensional structural schematic diagram of the utility model.
[0028] Figure 5 It is a cross-sectional structural schematic diagram of the utility model.
[0029] Figure 6 It is a structural schematic diagram of the lower base in the utility model.
[0030] Figure 7 It is a structural schematic diagram of the upper base in the utility model.
[0031] Figure 8 It is a structural schematic diagram of the lower die (upper die) in the utility model.
[0032] Fig. 9 The structure of the lower slider (upper slider) in the utility model is shown in FIG. Figure 1 .
[0033] Fig.10 The structure of the lower slider (upper slider) in the utility model is shown in FIG. Figure 2 .
[0034] Fig.11 It is a structural schematic diagram of the limit pin in the utility model.
[0035] Fig.12 It is a schematic diagram of the assembly structure of the punch and the punch base in the utility model.
[0036] Fig.13 It is a structural schematic diagram of the punch in the utility model.
[0037] Fig.14 It is a schematic diagram of the structure when the punch and the flange cooperate with each other in the utility model.
[0038] Explanation of the accompanying drawings: lower base 1, upper base 2, base positioning block 3, lower die 4, upper die 5, lower slider 6, upper slider 7, small positioning pin 8, large positioning pin 9, slider pressure strip 10, limit block 11, limit pin 13, punch base 14, punch 15, punch core rod 16, punch cover 17, spring 18, upper die pressing plate 19, limit pin fixing block 20, first card slot 21, second card slot 22, slide slot 23, spring hole 24, large pin hole 25, small pin hole 26, flange 27, first pin slot 28, second pin slot 29, water pipe accommodating slot 30, second molding slot 31, flange positioning slot 32, core rod mounting hole 33, connecting hole 34, first molding slot 35, threaded section 36, first diameter narrowing section 37, second diameter narrowing section 38, tip 39. DETAILED DESCRIPTION
[0039] The utility model will be described in detail below with reference to the accompanying drawings:
[0040] Example: As attached Figures 4 to 14 As shown, the stainless steel water pipe composite forming mold includes a lower base 1, an upper base 2, a base positioning block 3, a lower die 4, an upper die 5, a lower slider 6, an upper slider 7, a small positioning pin 8, a large positioning pin 9, a slider pressure strip 10, a limit block 11, a limit pin 13, a punch base 14, a punch 15, a punch core rod 16, a punch cover 17, a spring 18, an upper die pressing plate 19, a limit pin fixing block 20, a first card slot 21, a second card slot 22, a slide slot 23, a spring hole 24, a large pin hole 25, a small pin hole 26, a flange 27, a first pin slot 28, a second pin slot 29, a water pipe accommodating groove 30, a second molding groove 31, a flange positioning groove 32, a core rod mounting hole 33, a connecting hole 34, a first molding groove 35, a threaded section 36, a first diameter narrowing section 37, a second diameter narrowing section 38 and a tip 39.
[0041] Reference Figure 4 , 5 , the lower die 4 is fixedly installed on the lower base 1 by bolts, and the upper die 5 is fixedly installed on the upper base 2 by bolts. Figure 8 As shown, the surface of the lower mold 4 and the upper mold 5 (the two structures are symmetrical) are provided with a slide groove 23, and the inner walls on both sides of each slide groove 23 are fixedly installed with a slider strip 10, and the lower slider 6 and the upper slider 7 are placed in the corresponding slide groove 23, and are stepped with the corresponding slider strip 10 to prevent up and down shaking during the sliding process. Figure 8 , 10As shown, two spring holes 24 are provided on each slide groove 23, and two spring holes 24 are also provided on the surface of the lower slider 6 and the upper slider 7. The springs 18 are installed in the spring holes 24, so that the lower slider 6 / upper slider 7 and the lower mold 4 / upper mold 5 (slide groove 23) are slidingly connected through the spring 18, and the sliding direction is axial, that is, the length direction of the lower base 1.
[0042] Preferably, in Figure 4 , 5 As shown, two limit blocks 11 are threadedly connected and fixed on the surface of the lower die 4 and the upper die 5 facing the punch 15, and the limit blocks 11 are stopped at the mouth of the slide groove 23, thereby limiting the outward axial sliding stroke of the lower slider 6 / upper slider 7, which can effectively prevent the slider from escaping from the slide groove 23. The upper base 2 is connected to an external driving device through the upper die plate 19.
[0043] Reference Figure 4 , 6 7, a first slot 21 is provided at the corresponding position of the lower base 1 and the upper base 2, wherein the base positioning block 3 is fixedly installed on the first slot 21 of the lower base 1, and can cooperate with the first slot 21 of the upper base 2 to realize the positioning of the lower base 1 and the upper base 2 when the mold is closed. Figure 4 , 8 As shown in FIGS. 9 and 10, two large pin holes 25 are provided at corresponding positions of the lower mold 4 and the upper mold 5, wherein a large positioning pin 9 is installed in the large pin hole 25 of the lower mold 4, which can cooperate with the large pin hole 25 of the upper mold 5 to achieve positioning when the lower mold 4 and the upper mold 5 are closed. Two small pin holes 26 are provided at corresponding positions of the lower slider 6 and the upper slider 7, wherein a small positioning pin 8 is installed in the small pin hole 26 of the lower slider 6, which can cooperate with the small pin hole 26 of the upper slider 7 to achieve positioning when the lower slider 6 and the upper slider 7 are closed.
[0044] Furthermore, when the upper mold 5 and the lower mold 4 are closed, the upper slider 7 and the lower slider 6 cooperate to form a combination, and a molding cavity is provided in the combination to prevent the water pipe to be processed from being formed. Fig. 9 , 10 As shown in FIGS. 14 and 15 , the forming cavity is formed by closing the water pipe receiving grooves 30 provided on the lower slider 6 and the upper slider 7, and a second forming groove 31 is provided on the inner wall of the water pipe receiving groove 30. At the same time, the assembly (the lower slider 6 and the upper slider 7) extends outward along its axial direction (i.e., the side where the punch 15 is located) to form a flange 27 (cylindrical when closed and semi-cylindrical when separated), and the front end of the water pipe to be processed is exposed outside the flange 27.
[0045] like Figure 4 , 12As shown in Figures 1 to 14, the punch 15 is driven by an external pneumatic device. It is set on the side close to the flange 27 and can slide relative to the flange 27 along the axial direction, and cooperate with the flange 27 in a concave-convex manner. One end of the punch 15 is threadedly connected and fixed to the punch base 14 through the punch cover 17, and the other end of the punch 15 is provided with a flange positioning groove 32 that matches the flange 27. At the same time, a core rod mounting hole 33 for placing the punch core rod 16 is also provided in the punch 15. The core rod mounting hole 33 is connected to the flange positioning groove 32 through the connecting hole 34, and the first molding groove 35 is provided at the connection between the connecting hole 34 and the flange positioning groove 32. According to the requirements of the processing drawings, the first molding groove 35 is designed as a trumpet-shaped groove, and the second molding groove 31 is designed as a step-shaped pit. When the punch 15 is molded with the flange 27, the tip 39 of the punch core rod 16 passes through the connecting hole 34 and the first forming groove 35 in sequence and extends into the water pipe accommodating groove 30 to locate the center of the water pipe to be processed. At this time, the punch 15 first uses the first forming groove 35 to punch the front end of the water pipe into a trumpet shape, and then the punch 15 continues to move axially, pushing the assembly (lower slider 6 and upper slider 7) to slide relative to the upper mold 5 and the lower mold 4, and squeezes out a step at the rear end of the water pipe through the second forming groove 31.
[0046] Preferably, refer to the attached Figure 4 , 6 , 11, a second slot 22 is provided on the lower base 1 for embedding and installing the limit pin fixing block 20, and the limit pin fixing block 20 is threadedly connected and fixed to the lower base 1, such as Fig.11 As shown, the diameter of the limit pin 13 gradually decreases from right to left, which is a threaded section 36, a first diameter narrowing section 37 and a second diameter narrowing section 38. Among them, the limit pin 13 is connected and fixed to the screw hole on the limit pin fixing block 20 through the threaded section 36. Furthermore, a first pin groove 28 is provided at the corresponding positions of the lower mold 4 and the upper mold 5, and a second pin groove 29 is provided at the corresponding positions of the lower slider 6 and the upper slider 7. The first pin groove 28 and the second pin groove 29 can locate the first diameter narrowing section 37 of the limit pin 13, and the second diameter narrowing section 38 of the limit pin 13 extends into the water pipe accommodating groove 30 (molding cavity), so as to support the rear end of the water pipe during processing, as shown in FIG. Fig.14 shown.
[0047] The working process of this utility model:
[0048] Before the processing begins, the unformed water pipe is placed on the lower slider 6 (in the water pipe receiving groove 30), and the end face of the second diameter narrowing section 38 of the positioning pin 13 is pressed against the rear end of the water pipe, and the front end of the water pipe extends outward from the flange 27. Then, the start device controls the upper base 2 to descend, so that the lower base 1 and the upper base 2 are molded together, and the lower slider 6 and the upper slider 7 form a combination to clamp the water pipe to be processed. After clamping, the punch 15 is driven forward by the pneumatic device. The punch 15 first uses the first molding groove 35 to cold-extrude the front end of the water pipe into a trumpet shape, and then the punch 15 continues to advance axially, and the lower slider 6 and the upper slider 7 in the molded state are continuously pushed inward, driving the combination to slide relative to the upper mold 5 and the lower mold 4. During the advancement process, since the limit pin 13 presses the rear end of the water pipe, a step can be squeezed out at the rear end of the water pipe through the second molding groove 31.
[0049] It is understandable that, for those skilled in the art, any equivalent replacement or change to the technical solution and the concept of the utility model should fall within the protection scope of the claims attached to the utility model.
Claims
1. A stainless steel water pipe composite forming die, characterized in that: include: The lower die (4) is fixed on the lower base (1), and a lower slider (6) is axially slidably mounted on the lower die (4); The upper mold (5) is fixed on the upper base (2). An upper slider (7) is slidably mounted on the upper mold (5) in the axial direction. When the upper mold (5) and the lower mold (4) are closed, the upper slider (7) and the lower slider (6) cooperate to form a combined body. A molding cavity for placing the water pipe to be processed is provided in the combined body. A second molding groove (31) is provided in the molding cavity. The combined body extends outward in the axial direction to form a flange (27). The front end of the water pipe extends out of the flange (27). A punch (15) is axially slidably disposed on a side close to the flange (27) and is concavely and convexly matched with the flange (27) to drive the assembly to slide relative to the upper die (5) and the lower die (4). A first forming groove (35) is provided in the punch (15); and The limiting pin (13) is fixedly mounted on the lower base (1), and one end of the limiting pin (13) extends into the molding cavity, thereby supporting the rear end of the water pipe.
2. The stainless steel water pipe composite forming die according to claim 1, characterized in that: The lower die (4) and the upper die (5) are both provided with a slide groove (23), and the lower slider (6) and the upper slider (7) are placed in the corresponding slide grooves (23) and are slidably connected via a spring (18).
3. The stainless steel water pipe composite forming die according to claim 2, characterized in that: A stop block (11) is provided on one side of the lower die (4) and the upper die (5) facing the punch (15), and the stop block (11) is stopped at the mouth of the slide groove (23).
4. The stainless steel water pipe composite forming die according to claim 2, characterized in that: Slider strips (10) are fixedly mounted on the inner walls on both sides of the slide groove (23), and the lower slider (6) and the upper slider (7) are limited by the corresponding slider strips (10) in a stepped manner.
5. The stainless steel water pipe composite forming die according to claim 1, characterized in that: The lower base (1) and the upper base (2) are both provided with first slots (21) at corresponding positions, wherein a base positioning block (3) is installed on the first slot (21) of the lower base (1) for cooperating with the first slot (21) of the upper base (2) to achieve positioning of the lower base (1) and the upper base (2) when the mold is closed; large pin holes (25) are both provided at corresponding positions of the lower mold (4) and the upper mold (5), wherein a large positioning pin (9) is installed in the large pin hole (25) of the lower mold (4) for cooperating with the large pin hole (25) of the upper mold (5) to achieve positioning of the lower mold (4) and the upper mold (5) when the mold is closed; small pin holes (26) are both provided at corresponding positions of the lower slider (6) and the upper slider (7), wherein a small positioning pin (8) is installed in the small pin hole (26) of the lower slider (6) for cooperating with the small pin hole (26) of the upper slider (7) to achieve positioning of the lower slider (6) and the upper slider (7) when the mold is closed.
6. The stainless steel water pipe composite forming die according to claim 1, characterized in that: The forming cavity is formed by closing the water pipe accommodating grooves (30) provided on the lower slider (6) and the upper slider (7), and a second forming groove (31) is provided on the inner wall of the water pipe accommodating groove (30).
7. The stainless steel water pipe composite forming die according to claim 6, characterized in that: One end of the punch (15) is fixedly connected to the punch base (14) through a punch gland (17), and the other end of the punch (15) is provided with a flange positioning groove (32) matching the flange (27); a core rod mounting hole (33) for inserting a punch core rod (16) is provided in the punch (15), and the core rod mounting hole (33) is connected to the flange positioning groove (32) through a connecting hole (34), and a first forming groove (35) is provided at the connection between the connecting hole (34) and the flange positioning groove (32); when the punch (15) and the flange (27) are molded together, the tip (39) of the punch core rod (16) passes through the connecting hole (34) and the first forming groove (35) in sequence and extends into the water pipe accommodating groove (30) to position the center of the water pipe.
8. The stainless steel water pipe composite forming die according to claim 6, characterized in that: The lower mold (4) and the upper mold (5) are both provided with a first pin groove (28) at corresponding positions, and the lower slider (6) and the upper slider (7) are both provided with a second pin groove (29) at corresponding positions. The first pin groove (28) and the second pin groove (29) are used to locate a first diameter narrowing section (37) of a limiting pin (13), and the second diameter narrowing section (38) of the limiting pin (13) extends into the water pipe receiving groove (30).
9. The stainless steel water pipe composite forming die according to claim 1, characterized in that: The lower base (1) is provided with a second slot (22) for fixing and installing a limit pin fixing block (20); the limit pin (13) is connected and fixed to the limit pin fixing block (20) via a threaded section (36).
10. The stainless steel water pipe composite forming die according to claim 1, characterized in that: The first forming groove (35) is a trumpet-shaped groove, and the second forming groove (31) is a step-shaped pit.