Pull rod plug plate manufacturing tool

Abstract

The utility model discloses a kind of pull rod plugboard manufacturing tool, belong to metal plate forming technical field, including upper die, lower die and horizontal positioning piece, upper die is fixedly connected with the column head of press machine;Lower die is set below the column head of press machine;Horizontal positioning piece is set in lower die side, for limiting the horizontal position of material board one end;Setting positioning pin on the platen of upper die, positioning pin is corresponding with the position of plugboard hole on the forming pull rod plugboard.This utility model sets positioning pin on the platen of upper die, in the stamping process, with the bending of material board, plugboard hole opened on material board will gradually be in positioning pin, on the one hand, whether pull rod plugboard is bent in place can be tested, whether the position of plugboard hole is correct, on the other hand, positioning pin can hook pull rod plugboard when the column head of press machine rises, it is taken out from lower die, save manpower.

Description

Technical Field

[0001] This utility model relates to the field of metal plate forming technology, specifically to a tooling for manufacturing a pull rod insert plate. Background Technology

[0002] Tie rod inserts are critical connectors on pipe towers, typically made by bending sheet metal into a specific bent shape (such as a U-shape). They have insert holes on their sides for mounting fixing pins or tie rods. Traditional bending dies usually consist of an upper die fixed to the press head and a lower die fixed to the worktable. The operation is roughly as follows: the sheet metal with the punched shape and insert holes is placed on the lower die; the press drives the upper die downwards to bend the sheet metal into shape, and then the upper die moves upwards. During this process, operators rely on experience to judge whether the pressure is sufficient and whether the forming is accurate. Furthermore, the formed tie rod insert gets stuck on the lower die, making manual removal very laborious. Utility Model Content

[0003] To address the aforementioned technical shortcomings, the purpose of this utility model is to provide a tooling for manufacturing pull rod inserts. By setting positioning pins, it is easy to determine whether the forming is accurate and to easily remove the workpiece.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: The present invention provides a tooling for manufacturing a pull rod insert plate, comprising: The upper mold is fixedly connected to the head of the press. The upper mold includes a vertical pressure plate, and the bottom of the pressure plate is provided with rounded corners. The lower die is located below the head of the press, and the lower die includes a base and two parallel rollers rotatably mounted on the base; A lateral positioning component is located on one side of the lower die to limit the lateral position of one end of the material plate; The pressure plate is provided with a positioning pin, which corresponds to the position of the insertion hole on the forming tie rod insert plate.

[0005] Preferably, the lateral positioning element includes: Adjustment frame, which is fixed to one side of the base; A positioning baffle, the positioning baffle having the degree of freedom to slide on the adjusting frame; A locking mechanism is installed on the positioning baffle to lock the position of the positioning baffle on the adjustment frame.

[0006] Preferably, the adjusting frame has a strip-shaped groove, the bottom of the positioning baffle is inserted into the groove, a wing plate is fixed on the positioning baffle, and the wing plate abuts against the surface of the adjusting frame.

[0007] Preferably, the locking mechanism includes: The locking groove is located on the adjusting frame and is parallel to the slide groove. An adjusting bolt is inserted into the wing plate and the locking groove, and a nut that is threadedly engaged with the adjusting bolt is provided below the locking groove.

[0008] Preferably, the base includes: The base plate has a groove formed on its edge; Two parallel upright plates are fixed to a base plate; a bearing seat is fixed on the upright plate, a bearing is installed inside the bearing seat, and a bearing baffle is fixed on the side of the bearing seat away from the upright plate.

[0009] Preferably, the roller is a stepped roller, the diameters at both ends of the roller are smaller than the diameter at the middle of the roller, and the two ends of the roller pass through two vertical plates and are inserted into the bearings in the bearing housing.

[0010] Preferably, the pressure plate has multiple mounting holes, and the positioning pin is inserted into any one of the mounting holes.

[0011] Preferably, the mounting hole is a stepped hole, and an inner groove is formed at the larger diameter end of the mounting hole, and a limiting member that cooperates with the inner groove is provided on the positioning pin.

[0012] Preferably, the limiting member is elastic, and U-shaped segments are provided at both ends of the limiting member, the U-shaped segments are engaged in the inner groove, and a V-shaped segment is provided between the middle part of the limiting member and the U-shaped segments.

[0013] Preferably, a limiting bolt is threaded onto one end of the positioning pin, the limiting bolt passes through the center of the limiting member, and a washer is provided between the end of the limiting bolt and the limiting member.

[0014] The beneficial effects of this utility model are as follows: This invention features a positioning pin on the upper die's pressure plate. During the stamping process, as the material plate bends, the insertion holes on the material plate gradually fit into the positioning pin. This serves two purposes: firstly, it allows verification that the pull rod insertion plate is bent correctly and that the insertion hole is in the correct position; secondly, when the press head rises, the positioning pin can hook the pull rod insertion plate and remove it from the lower die, saving manpower. A transverse positioning component on the side of the lower die assists in positioning the material plate, ensuring its correct placement. The positioning baffle in this invention can be moved on the adjusting frame to change its positioning position, allowing for the positioning of workpieces of different sizes. Adjusting bolts can fix the positioning baffle on the adjusting frame, preventing accidental movement. Multiple mounting holes are provided on the pressure plate, and the positioning pin can be fixed in any one of these holes using limiting components. This allows the fixture to assist in processing pull rod insertion plates with different insertion hole positions, further expanding its application range. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0016] Figure 1 This is a three-dimensional view of the overall structure of a tooling for manufacturing a pull rod insert plate, provided in Embodiment 1 of this utility model.

[0017] Figure 2 This is a schematic diagram of the tooling used to manufacture a pull rod insert plate according to Embodiment 1 of this utility model, showing the material plate being placed in place.

[0018] Figure 3 This is a schematic diagram of a tooling for making a pull rod insert plate according to Embodiment 1 of this utility model, which presses a material plate into a pull rod insert plate.

[0019] Figure 4 This is a schematic diagram of the pressure plate in a tooling for manufacturing a pull rod insert plate, provided in Embodiment 2 of this utility model.

[0020] Figure 5 This is a schematic diagram illustrating the fit between the limiting component and the positioning pin in a tooling for manufacturing a pull rod insert, provided in Embodiment 2 of this utility model.

[0021] Figure 6 for Figure 5 A magnified view of a portion of point A in the middle.

[0022] Figure 7 This is a three-dimensional cross-sectional view of the pressure plate in a tooling for manufacturing a tie rod insert, provided in Embodiment 2 of this utility model.

[0023] Figure 8 for Figure 7 A magnified view of a section at point B in the middle.

[0024] Explanation of reference numerals in the attached figures: 1. Connecting plate, 2. Pressure plate, 3. Positioning pin, 4. Roller, 5. Base plate, 6. Vertical plate, 7. Adjusting bolt, 8. Bearing seat, 9. Bearing baffle, 10. Positioning baffle, 11. Adjusting frame, 12. Slide groove, 13. Wing plate, 14. Locking groove, 15. Strip groove, 16. Mounting hole, 17. Inner groove, 18. Limiting component, 19. U-shaped section, 20. V-shaped section, 21. Limiting bolt, 22. Material plate. Detailed Implementation

[0025] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Example 1: like Figures 1 to 3 As shown, Embodiment 1 of this utility model provides a tooling for manufacturing a tie rod insert, including an upper mold and a lower mold. The upper mold includes a pressure plate 2 and a connecting plate 1. The connecting plate 1 is welded to the top of the pressure plate 2 and is rigidly fixedly connected to the head of the press (generally by bolts). It moves up and down with the head, driving the pressure plate 2 to rise and fall. The pressure plate 2 is rectangular and vertically welded below the connecting plate 1. It is made of high-strength steel, and its bottom edge is machined with a rounded corner of a specific radius. The rounded corner matches the bending inner angle radius of the final tie rod insert, directly acting on the material plate 22 to perform bending deformation.

[0027] A positioning pin 3 is provided on the side wall of the pressure plate 2, perpendicular to the pressure plate 2. The axis of the positioning pin 3 precisely corresponds to the ideal center position of the insertion hole on the pull rod insert plate to be formed. The positioning pin 3 is installed on the pressure plate 2 by welding or by detachment.

[0028] The lower die is positioned on the press's worktable, below the upper die. The lower die includes a base and two rollers 4 mounted on it, providing overall support. The base comprises a horizontally placed bottom plate 5 and two vertical plates 6 welded to it. These plates 6 are parallel and vertical, with space reserved between them for placing a material plate 22. Slots 15 are provided on both sides of the bottom plate 5 for mounting bolts to secure it to the worktable. Two bearing seats 8 are fixedly installed on the outer side of each vertical plate 6. Bearings are housed within the bearing seats 8. To constrain the axial position of the bearings, bearing baffles 9 are also fixedly installed on the outer end face of the bearing seats 8 away from the vertical plates 6.

[0029] Two parallel rollers 4 are arranged between two vertical plates 6. The two rollers 4 are horizontally installed, parallel to each other, and have the same axial direction. The rollers 4 are preferably stepped shaft structures that are thinner at both ends and thicker in the middle. The middle part is a cylindrical rolling working section with a larger diameter; its two ends extend into smooth shaft sections with smaller diameters. The smooth shaft sections pass precisely through the through holes on the vertical plates 6 and then into the inner rings of the bearings in the bearing seats 8 on both sides.

[0030] In use, the pre-cut rectangular blank 22 (i.e., the flat blank for making the tie rod insert) is first placed on the two rollers 4 of the lower die. The operator manually positions one end of the blank 22 close to the lateral positioning part on the side of the tooling to ensure that the blank 22 is correctly positioned laterally when it is fed into the bending position, preventing misalignment that could cause asymmetry in the workpiece. Its longitudinal position can be positioned by the vertical plate 6, which rests against the inner wall of the vertical plate 6. Then, the press is started, and the press head drives the upper die downward. The rounded corners at the bottom of the pressure plate 2 press the blank 22 between the two rollers 4, forcing the blank 22 to bend and deform. During this process, as the blank 22 is gradually bent, the pre-punched insert holes in the blank 22 at the corresponding positions will gradually move upward, and when the bending is completed or nearly completed, they will precisely fit into the positioning pins 3 extending from the pressure plate 2. The positioning pin 3 can be used to determine whether the material plate 22 is bent in place. Only when the bending angle is correct and the position of the insertion plate hole is correct can the insertion plate hole be smoothly fitted into the positioning pin 3.

[0031] After the bending process is completed, the press head rises. When the pressure plate 2 begins to lift upwards, since the positioning pin 3 is now inserted into the insertion hole of the formed tie rod insert, it will naturally hook the workpiece, lifting the tie rod insert, which might otherwise be stuck between the two rollers 4 due to elastic recovery or friction, upwards from the lower mold. The operator only needs to catch it from below or let the workpiece slide down automatically to complete the removal, significantly saving manpower and improving operational safety. Since the inner wall of the formed tie rod insert is not completely attached to the surface of the pressure plate 2, leaving a certain gap, the positioning pin 3 can be disengaged from the insertion hole by moving the tie rod insert, allowing the finished product to be easily removed.

[0032] Example 2: Based on Example 1, Example 2 provides a more specific design for the lateral positioning component.

[0033] like Figure 1 and Figure 2 As shown, the lateral positioning component is mainly used to constrain the lateral position of one end of the material plate 22 when it is placed on the rollers 4 of the lower die, ensuring that the bending line (usually in the middle of the material plate 22) is always directly above the center of the two rollers 4. The lateral positioning component is installed on one side of the base and includes an adjusting bracket 11 and a positioning baffle 10. The adjusting bracket 11 is made of metal sheet, and its length direction is perpendicular to the axis direction of the two rollers 4. A long strip groove 12 is machined along the length direction of the adjusting bracket 11.

[0034] The positioning baffle 10 is a rectangular metal block with sufficient height and thickness. The bottom of the positioning baffle 10 matches the slide groove 12, allowing it to be inserted into the groove and slide smoothly along its length on the adjusting frame 11. To increase the rigidity of the positioning baffle 10 and prevent it from tipping over on the surface of the adjusting frame 11, outwardly extending horizontal wing plates 13 are welded to both sides of the positioning baffle 10. When the bottom of the positioning baffle 10 is inserted into the slide groove 12, the lower surface of the wing plate 13 directly abuts against the upper surface of the adjusting frame 11, forming a stable support.

[0035] The adjusting frame 11 has symmetrical slots or elongated holes on both sides, parallel to the sliding groove 12, called locking grooves 14. The wing plate 13 of the positioning baffle 10 has a vertical guide hole. The screw of the adjusting bolt 7 passes through the guide hole of the wing plate 13 and the locking groove 14 on the adjusting frame 11 in sequence. A nut, threaded with the adjusting bolt 7, is screwed into the screw from the back of the locking groove 14, thereby fixing the position of the positioning baffle 10.

[0036] When the lateral positioning position of the material plate 22 needs to be adjusted to accommodate material plates 22 of different widths, the operator first loosens the adjusting bolt 7, so that the clamping force between the wing plate 13 and the adjusting frame 11 is released, allowing the positioning baffle 10 to slide smoothly within the slide groove 12 of the adjusting frame 11. After determining the corresponding position, the adjusting bolt 7 is tightened to securely lock the positioning baffle 10 in the set position. The sliding range of the positioning baffle 10 (i.e., the length of the adjusting frame 11) can be designed as needed to cover the target workpiece size range.

[0037] Example 3: like Figures 4 to 8 As shown, in order to achieve flexible position adjustment of the positioning pin 3, this embodiment, based on Embodiment 1 and Embodiment 2, provides multiple mounting holes 16 on the pressure plate 2 for installing the positioning pin 3. The mounting holes 16 have the same specifications. Each mounting hole 16 is a stepped hole that penetrates the thickness of the pressure plate 2.

[0038] At the transition step where the diameter of the stepped hole changes, i.e., in the area where the large-diameter hole section is close to the small-diameter hole opening, a concave annular groove, i.e., an inner groove 17, is formed circumferentially. The locating pin 3 is a cylindrical pin. A limiting element 18 is provided at the end of the locating pin 3. The limiting element 18 has elastic deformation capability and is usually made of spring steel.

[0039] The limiting member 18 is elongated, with both ends formed into specific U-shaped segments 19, whose shape and size are designed to fit precisely into the inner groove 17 in the mounting hole 16. A V-shaped transition section, called the V-shaped segment 20, is provided between the U-shaped segment 19 and the middle of the limiting member 18. The V-shaped segment 20 provides deformation space for the displacement of the U-shaped segment 19. The middle of the limiting member 18 is fixed to the tail of the locating pin 3 by a limiting bolt 21. To increase the contact area, a washer can be placed between the screw head of the limiting bolt 21 and the limiting member 18.

[0040] When it is necessary to install the positioning pin 3, insert the positioning pin 3 into the mounting hole 16 from the end with the larger diameter. Under the elastic action, the two ends of the limiting member 18 are engaged in the inner groove 17, forming an axial limit on the positioning pin 3.

[0041] When it is necessary to remove the positioning pin 3, push the positioning pin 3 along the axial direction of the positioning pin 3 to cause the U-shaped segment 19 to elastically contract inward along the radial direction of the positioning pin 3. At this time, the V-shaped segment 20 further contracts and bends, so that the limiting member 18 is disengaged from the inner groove 17, thereby smoothly removing the positioning pin 3 from the mounting hole 16.

[0042] When machining a pull rod insert plate with a different insert plate hole position than the previous workpiece, the operator only needs to remove the locating pin 3 from the pressure plate 2 to change its position. Then, the removed locating pin 3 is reinstalled into another mounting hole 16 on the pressure plate 2 that corresponds to the insert plate hole position of the new product. The entire process does not require replacing the entire upper or lower mold's main components; only the position of the locating pin 3 needs to be adjusted to quickly switch product types, greatly expanding the tooling's versatility and economic benefits.

[0043] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A tooling for manufacturing a pull rod insert plate, characterized in that, include: The upper mold is fixedly connected to the head of the press. The upper mold includes a vertical pressure plate, and the bottom of the pressure plate is provided with rounded corners. The lower die is located below the head of the press, and the lower die includes a base and two parallel rollers rotatably mounted on the base; A lateral positioning component is located on one side of the lower die to limit the lateral position of one end of the material plate; The pressure plate is provided with a positioning pin, which corresponds to the position of the insertion hole on the forming tie rod insert plate.

2. The tooling for manufacturing a pull rod insert plate as described in claim 1, characterized in that, The lateral positioning component includes: Adjustment frame, which is fixed to one side of the base; A positioning baffle, the positioning baffle having the degree of freedom to slide on the adjusting frame; A locking mechanism is installed on the positioning baffle to lock the position of the positioning baffle on the adjustment frame.

3. The tooling for manufacturing a pull rod insert plate as described in claim 2, characterized in that, The adjusting frame has a strip-shaped sliding groove, the bottom of the positioning baffle is inserted into the sliding groove, and a wing plate is fixed on the positioning baffle, the wing plate abutting against the surface of the adjusting frame.

4. The tooling for manufacturing a pull rod insert plate as described in claim 3, characterized in that, The locking mechanism includes: The locking groove is located on the adjusting frame and is parallel to the slide groove. An adjusting bolt is inserted into the wing plate and the locking groove, and a nut that is threadedly engaged with the adjusting bolt is provided below the locking groove.

5. The tooling for manufacturing a pull rod insert plate as described in claim 1, characterized in that, The base includes: The base plate has a groove formed on its edge; Two parallel upright plates are fixed to a base plate; a bearing seat is fixed on the upright plate, a bearing is installed inside the bearing seat, and a bearing baffle is fixed on the side of the bearing seat away from the upright plate.

6. The tooling for manufacturing a pull rod insert plate as described in claim 5, characterized in that, The roller is a stepped roller, with the diameters at both ends of the roller being smaller than the diameter at the middle. The two ends of the roller pass through two vertical plates and are inserted into the bearings in the bearing housings.

7. The tooling for manufacturing a pull rod insert plate as described in claim 1, characterized in that, The pressure plate has multiple mounting holes, and the positioning pin is inserted into any of the mounting holes.

8. The tooling for manufacturing a pull rod insert plate as described in claim 7, characterized in that, The mounting hole is a stepped hole, and an inner groove is provided at the larger diameter end of the mounting hole. A limiting member that cooperates with the inner groove is provided on the positioning pin.

9. The tooling for manufacturing a pull rod insert plate as described in claim 8, characterized in that, The limiting member is elastic, and U-shaped segments are provided at both ends of the limiting member. The U-shaped segments are locked in the inner groove, and a V-shaped segment is provided between the middle part of the limiting member and the U-shaped segments.

10. The tooling for manufacturing a pull rod insert plate as described in claim 8, characterized in that, One end of the positioning pin is threaded with a limiting bolt, which passes through the center of the limiting member, and a washer is provided between the end of the limiting bolt and the limiting member.

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