A stainless steel rod bending device

Abstract

This utility model relates to the field of stamping die technology, and in particular to a stainless steel bar bending device, including an upper die assembly and a lower die assembly; the upper die assembly includes a first die base, a forming pressure head, and a side pressure trigger, and the lower die assembly includes a second die base and a side pressure member, the second die base having an upward-facing closing notch; the first die base is sequentially configured with a first descending stroke and a second descending stroke, the bottom end of the forming pressure head descends synchronously into the closing notch with the first descending stroke of the first die base, and the forming pressure head remains stationary relative to the second die base during the second descending stroke of the first die base; the side pressure trigger descends synchronously with the first descending stroke and the second descending stroke of the first die base, and the side pressure trigger drives the side pressure member to move horizontally towards the forming pressure head during the second descending stroke, causing the side pressure member to press against the stainless steel bar for secondary bending, so that multiple bends can be formed in one die closing, eliminating the need to bend the stainless steel bar one by one, resulting in higher work efficiency and facilitating batch processing of products.

Description

Technical Field

[0001] This utility model relates to the field of stamping die technology, and in particular to a stainless steel bar bending device. Background Technology

[0002] Currently, bending machines are used to bend stainless steel bars. For example, some existing CNC bending machines push the stainless steel bar forward a certain distance via a feeding mechanism, then raise the bending head. The bending head's chuck clamps the section of the stainless steel bar near the end, and the bending head rotates, thus creating a bend angle on the stainless steel bar. Then, the chuck opens and the bending head lowers. This bending process is repeated to create another bend angle on the stainless steel bar, and so on until the desired bent stainless steel bar part is obtained. It is evident that such bending machines bend each angle one by one before moving on to the next, resulting in low operating efficiency and making them unsuitable for mass production. Utility Model Content

[0003] The main purpose of this utility model is to provide a stainless steel bar bending device, which aims to eliminate the need to bend stainless steel bars one by one, thereby increasing work efficiency and facilitating batch processing of products.

[0004] To achieve the above objectives, this utility model proposes a stainless steel bar bending device, comprising an upper die assembly and a lower die assembly. The upper die assembly includes a first die base, a forming pressure head, and a side pressure trigger. The forming pressure head and the side pressure trigger are respectively disposed below the first die base. The side pressure triggers are spaced apart on one side of the forming pressure head in the lateral direction, with the bottom end of the side pressure trigger higher than the bottom end of the forming pressure head. The lower die assembly includes a second die base and a side pressure member. The second die base has an upward-facing mold closing notch, which is vertically opposite to the forming pressure head. The side pressure member is located at the opening of the mold closing notch. On the side of the forming head, the side pressure member and the side pressure trigger member are arranged opposite each other vertically. The side pressure member is arranged to move horizontally to approach and move away from the forming head. The first mold base is arranged with a first descent stroke and a second descent stroke in sequence. The bottom end of the forming head descends synchronously into the mold closing notch with the first descent stroke of the first mold base. The forming head remains stationary relative to the second mold base during the second descent stroke of the first mold base. The side pressure trigger member descends synchronously with the first descent stroke and the second descent stroke of the first mold base. During the second descent stroke, the side pressure trigger member drives the side pressure member to move horizontally towards the forming head.

[0005] Optionally, the bottom end of the side pressure trigger is provided with a first inclined surface, the top end of the first inclined surface is positioned close to the forming pressure head relative to the bottom end of the first inclined surface, and the upper end of each side pressure member is provided with a second inclined surface that cooperates with the first inclined surface.

[0006] Optionally, the side pressure trigger is movably raised and lowered relative to the first mold base, and a limiting member is provided in the first mold base to limit the height of the side pressure trigger relative to the first mold base.

[0007] Optionally, the first mold base is provided with a first slide and a second slide. The first slide is vertically arranged, and the side pressure trigger can be slidably arranged in the first slide. The second slide is horizontally arranged and located above the first slide. The top end of the first slide is connected to the second slide. The limiting member is slidably arranged in the second slide. The lower end face of the limiting member is provided with a third inclined surface. The top end of the third inclined surface is close to the forming pressure head relative to the bottom end of the third inclined surface. The top end of the side pressure trigger is provided with a fourth inclined surface that cooperates with the third inclined surface.

[0008] Optionally, the first mold base is provided with an adjustment mechanism, which includes a first connecting rod and a fixing block. The first connecting rod is connected to a limiting member, and the fixing block is fixedly connected to the first mold base. The first connecting rod passes through the second slide and is detachably fixedly connected to the fixing block to lock and unlock the limiting member.

[0009] Optionally, the upper mold assembly also includes a first elastic element, and the forming pressure head is disposed below the first mold base through the first elastic element.

[0010] Optionally, the forming pressure head includes a bending head and a bending column. The bending head is detachably disposed at the bottom end of the forming pressure head, and the lower end surface of the bending head is an arc surface. The central axis of the bending column is arranged horizontally and longitudinally, and the height of the lower surface of the bending column is higher than the arc surface of the bending head. The bending column is located on one side of the bending head in the lateral direction. The side pressure component includes a slider and a roller. The surface of the roller has a first groove, and the roller is rotatably disposed on the side of the slider close to the forming pressure head. During the second downward stroke of the first mold base, the roller is higher than the bending column.

[0011] Optionally, the lower mold assembly further includes a support block and a second elastic member. The support block is disposed vertically opposite to the forming pressure head and is floatingly disposed in the mold closing notch. The second elastic member is disposed within the mold closing notch. The top end of the second elastic member is connected to the support block, and the bottom end of the second elastic member is connected to the second mold base. During the second downward stroke of the first mold base, the support block abuts and is fixed to the bottom of the mold closing notch. The upper end surface of the support block is provided with a horizontally extending second groove. The second groove is horizontally aligned with the first groove, and the bottom end of the second groove is at the same horizontal height as the bottom end of the first groove.

[0012] Optionally, the slider is provided with a positioning block, which protrudes from the upper end face of the slider.

[0013] Optionally, a recovery mechanism is provided on the side of the slider away from the roller. The recovery mechanism includes a pressure cap, a second connecting rod, and a recovery spring. The second connecting rod is horizontally and laterally slidably disposed on the second mold base. One end of the second connecting rod is connected to the slider, and the other end of the second connecting rod passes through the second mold base and is connected to the pressure cap. The recovery spring is sleeved on the second connecting rod. One end of the recovery spring is connected to the pressure cap, and the other end of the recovery spring is connected to the second mold base.

[0014] The technical solution provided by this utility model can include the following beneficial effects:

[0015] In the stainless steel bar bending device provided by this utility model, after the forming pressure head presses down on the stainless steel bar from top to bottom to form the first bending part, the side pressure trigger can drive the side pressure member to move towards the forming pressure head, so that the side pressure member abuts against the stainless steel bar for a second bending, so that multiple bends can be formed in one mold closing, without having to bend the stainless steel bar one by one, which has high work efficiency and is conducive to batch processing of products. Attached Figure Description

[0016] 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 the structures shown in these drawings without creative effort.

[0017] Figure 1 This is a cross-sectional structural diagram of the stainless steel bar bending device of this utility model;

[0018] Figure 2 This is a schematic diagram showing the state of the first mold base at the end of the first descent stroke of this utility model;

[0019] Figure 3 This is a schematic diagram of the state of the first mold base at the end of the first descent stroke according to another embodiment of the present invention;

[0020] Figure 4 This is a schematic diagram showing the state of the first mold base at the end of the second descent stroke of this utility model;

[0021] Figure 5 This is a three-dimensional structural diagram of the bending component in the stainless steel bar bending device of this utility model;

[0022] Figure 6 This is a three-dimensional structural diagram of the stainless steel bar bending device of this utility model;

[0023] Figure 7 This is a schematic diagram showing the change in the first descent stroke of the first mold base of this utility model;

[0024] Figure 8 This is a schematic diagram showing the change in the second descent stroke of the first mold base of this utility model;

[0025] Figure 9 This is a schematic diagram of the U-shaped buckle structure;

[0026] Figure 10 This is a diagram showing the U-shaped buckle before and after its springback mechanism.

[0027] In the attached diagram: 1-Upper mold assembly, 11-First mold base, 111-First slide rail, 112-Second slide rail, 12-Forming pressure head, 121-Bending head, 122-Bending column, 13-Side pressure trigger, 131-First inclined surface, 132-Fourth inclined surface, 14-Limiting component, 141-Third inclined surface, 15-Adjusting mechanism, 151-First connecting rod, 152-Fixing block, 16-First elastic component, S1-First S2 - Second downward stroke, 2 - Lower mold assembly, 21 - Second mold base, 211 - Mold closing notch, 22 - Side pressure member, 221 - Second inclined surface, 222 - Slider, 223 - Roller, 224 - First groove, 225 - Positioning block, 23 - Support block, 231 - Second groove, 24 - Second elastic member, 25 - Restoration mechanism, 251 - Pressure cap, 252 - Second connecting rod, 253 - Restoration spring. Detailed Implementation

[0028] 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.

[0029] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0030] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication 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.

[0031] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the word "and / or" throughout the text means including three parallel solutions; taking "A and / or B" as an example, it includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0032] The following is combined Figures 1 to 10 This invention describes a stainless steel bar bending device according to an embodiment of the present invention, comprising: an upper die assembly 1 and a lower die assembly 2;

[0033] The upper mold assembly 1 includes a first mold base 11, a forming head 12, and a side pressure trigger 13. The forming head 12 and the side pressure trigger 13 are respectively disposed below the first mold base 11. The side pressure trigger 13 is spaced apart on one side of the forming head 12 in the lateral direction, and the bottom end of the side pressure trigger 13 is higher than the bottom end of the forming head 12. The first mold base 11 can be driven by a hydraulic system or a cylinder to achieve vertical lifting.

[0034] The lower mold assembly 2 includes a second mold base 21 and a side pressure member 22. The second mold base 21 is provided with an upward-facing mold closing notch 211. The mold closing notch 211 is vertically opposite to the forming pressure head 12. The side pressure member 22 is located beside the opening of the mold closing notch 211. The side pressure member 22 is vertically opposite to the side pressure trigger member 13. The side pressure member 22 is horizontally movable to move horizontally closer to and further away from the forming pressure head 12.

[0035] like Figure 7 and Figure 8 As shown, the first mold base 11 is sequentially configured with a first descending stroke S1 and a second descending stroke S2. The bottom end of the forming pressure head 12 descends synchronously with the first descending stroke S1 of the first mold base 11 into the mold closing notch 211. The forming pressure head 12 remains stationary relative to the second mold base 21 during the second descending stroke S2 ​​of the first mold base 11. The side pressure trigger 13 descends synchronously with the first descending stroke S1 and the second descending stroke S2 ​​of the first mold base 11. During the second descending stroke S2, the side pressure trigger 13 drives the side pressure member 22 to move horizontally towards the forming pressure head 12 to bend the stainless steel rod.

[0036] In the stainless steel bar bending device provided by this utility model, after the forming pressure head 12 presses down on the stainless steel bar from top to bottom to form the first bending part, the side pressure trigger 13 can drive the side pressure member 22 to move towards the forming pressure head 12, so that the side pressure member 22 abuts against the stainless steel bar to perform a second bending, so that multiple bends can be formed in one mold closing, without having to bend the stainless steel bar one by one, which has high work efficiency and is conducive to batch processing of products.

[0037] Specifically, such as Figure 9 The U-shaped buckle shown is made of a stainless steel bar, featuring a central V-shaped bend and U-shaped bends on both sides. Some existing CNC bending machines push the stainless steel bar forward a distance via a feeding mechanism, then raise the bending head 121. The bending head 121 clamps the section of the stainless steel bar near the end, and the bending head 121 rotates, thus creating a U-shaped bend on one side of the stainless steel bar. Then the clamps open, and the bending head 121 lowers. Repeating this bending process creates a central V-shaped bend on the stainless steel bar, and repeating the bending process again creates a U-shaped bend on the other side. It is evident that such bending machines process each bend individually before moving on to the next, resulting in low efficiency and unsuitability for mass production.

[0038] In one specific embodiment of this utility model, such as Figure 1 , Figure 2 and Figure 4 As shown, two side-pressure triggers 13 and two side-pressure members 22 are provided. The two side-pressure triggers 13 are spaced apart in the lateral direction, and the forming head 12 is located between the two side-pressure triggers 13. The two side-pressure members 22 are arranged vertically corresponding to the side-pressure triggers 13 on the same side. The section of the stainless steel rod near the end abuts against the two side-pressure members 22, so that the stainless steel rod crosses the mold closing notch 211. In the first downward stroke S1 of the first mold base 11, the forming head 12 abuts against the middle of the stainless steel rod and gradually presses down, so that the stainless steel rod forms a V-shaped bend in the middle. In the second downward stroke S2 ​​of the second mold base 21, the side-pressure triggers 13 abut against the side-pressure members 22 and drive the side-pressure members 22 to move towards the forming head 12. The side-pressure members 22 abut against the section of the stainless steel rod near the end, causing the section of the stainless steel rod near the end to bend, forming a U-shaped bend on the side. In this embodiment, U-shaped buckles can be produced simply by closing the mold, without having to bend the stainless steel bars one by one, which improves work efficiency and facilitates mass production.

[0039] Optionally, such as Figure 2As shown, the bottom end of the side pressure trigger 13 is provided with a first inclined surface 131, and the top end of the first inclined surface 131 is positioned close to the forming pressure head 12 relative to the bottom end of the first inclined surface 131. The upper end of each side pressure member 22 is provided with a second inclined surface 221 that cooperates with the first inclined surface 131. Specifically, the second inclined surface 221 is parallel to the first inclined surface 131. In this embodiment, through the contact between the first inclined surface 131 and the second inclined surface 221, the side pressure member 22 moves horizontally towards the forming pressure head 12 as the side pressure trigger 13 descends, causing the side pressure member 22 to bend laterally against the stainless steel rod.

[0040] Due to the properties of stainless steel, it has a certain springback after bending. If the stainless steel bar is bent at the target bending angle, the springback will not meet the standard. Therefore, when bending stainless steel bars, the actual bending angle is greater than the target bending angle to compensate for the springback. Figure 10 As shown, the dashed outline represents the actual profile of the stainless steel bar after bending, while the solid outline represents the profile after springback. Adjusting the actual bending angle to control springback compensation has become a key technical challenge in bending stainless steel bars.

[0041] Therefore, in a preferred embodiment of the present invention, the side pressure trigger 13 is movably arranged to rise and fall relative to the first mold base 11, and the first mold base 11 is provided with a limiting member 14, which is used to limit the height of the side pressure trigger 13 relative to the first mold base 11.

[0042] In this embodiment, the side-pressure trigger 13 can rise and fall relative to the first mold base 11 in the height direction. When the side-pressure trigger 13 contacts the side-pressure member 22, the side-pressure trigger 13 rises relative to the first mold base 11 due to the supporting force of the side-pressure member 22, and then continues to fall with the first mold base 11 against the limiting member 14. In this way, by changing the height of the bottom end of the side-pressure trigger 13 through the limiting member 14, the displacement of the side-pressure trigger 13 out of the side-pressure member 22 is changed, thereby controlling the angle of lateral bending of the stainless steel bar.

[0043] For example, such as Figure 3 In one optional embodiment, the limiting member 14 can be a bolt, threadedly connected to the first mold base 11. The limiting member 14 is vertically positioned, and rotating it allows it to rise or fall relative to the first mold base 11. The limiting member 14 is located above the side pressure trigger 13. Thus, by adjusting the height of the limiting member 14, the rising height of the side pressure trigger 13 is limited, thereby adjusting the displacement of the side pressure trigger 13 outward from the side pressure member 22. This controls the angle of lateral bending of the stainless steel bar, and consequently, facilitates control over the amount of springback compensation for the lateral bending of the stainless steel bar.

[0044] Optionally, the first mold base 11 is provided with a first slide rail 111 and a second slide rail 112. The first slide rail 111 is vertically arranged, and the side pressure trigger 13 is slidably disposed within the first slide rail 111. The second slide rail 112 is horizontally arranged and located above the first slide rail 111. The top end of the first slide rail 111 is connected to the second slide rail 112. The limiting member 14 is slidably disposed within the second slide rail 112. The lower end surface of the limiting member 14 is provided with a third inclined surface 141. The top end of the third inclined surface 141 is positioned close to the forming pressure head 12 relative to the bottom end of the third inclined surface 141. The top end of the side pressure trigger 13 is provided with a fourth inclined surface 132 that cooperates with the third inclined surface 141. Specifically, the fourth inclined surface 132 is parallel to the third inclined surface 141. In this embodiment, the limiting member 14 is block-shaped, and the bottom surface is provided with the third inclined surface 141. The limiting member 14 can slide lockably within the second slide rail 112, changing the position of the third inclined surface 141, thus changing the height to which the side-pressure trigger member 13 can rise. Figure 2 As shown, when the limiting member 14 moves inward, the height that the side pressure trigger 13 can rise gradually decreases; when the limiting member 14 moves outward, the height that the side pressure trigger 13 can rise increases. Thus, by changing the position of the limiting member 14 in the second slide rail 112, the displacement of the side pressure trigger 13 pushing out the side pressure member 22 can be adjusted, thereby controlling the angle of the lateral bending of the stainless steel bar, and further facilitating the control of the amount of springback compensation for the lateral bending of the stainless steel bar.

[0045] Specifically, when the side pressure trigger 13 rises upward within the first slide rail 111, the fourth inclined surface 132 at the top of the side pressure trigger 13 abuts against the third inclined surface 141 of the limiting member 14. Since the limiting member 14 is locked within the second slide rail 112, the limiting member 14 will not slide or shift under the action of the side pressure trigger 13. The side pressure trigger 13 continues to descend with the first mold base 11, pushing out the side pressure member 22.

[0046] Furthermore, the first mold base 11 is provided with an adjustment mechanism 15, which includes a first connecting rod 151 and a fixing block 152. The first connecting rod 151 is connected to the limiting member 14, and the fixing block 152 is fixedly connected to the first mold base 11. The first connecting rod 151 passes through the second slide rail 112 and is detachably fixedly connected to the fixing block 152 to lock and unlock the limiting member 14.

[0047] like Figure 4 As shown, by pulling out and inserting the first connecting rod 151, the lateral position of the limiting member 14 within the second slide rail 112 can be adjusted, thereby changing the position of the third inclined plane 141. More specifically, as... Figure 4As shown, the first connecting rod 151 has external threads and can be locked by clamping the fixing block 152 with two nuts, thereby locking the position of the limiting member 14.

[0048] Specifically, the upper mold assembly 1 further includes a first elastic element 16, and the forming pressure head 12 is disposed below the first mold base 11 via the first elastic element 16. Optionally, the first elastic element 16 can be a nitrogen spring. The first elastic element 16 has a preload, so that during the first downward stroke S1 of the first mold base 11, the compression of the first elastic element 16 is extremely small. The compression process of the first elastic element 16 is the second downward stroke S2 ​​of the first mold base 11.

[0049] Specifically, such as Figure 4 As shown, one end of the first elastic element 16 is connected to the first mold base 11, and the other end is connected to the forming pressure head 12. During the first descending stroke S1 of the first mold base 11, the second mold base 21 fails to provide sufficient support force to compress the first elastic element 16, so the forming pressure head 12 descends with the first mold base 11. When the second mold base 21 provides sufficient support force, during the second descending stroke S2 ​​of the first mold base 11, the forming pressure head 12 remains stationary relative to the second mold base 21 and compresses the first elastic element 16. In this way, the forming pressure head 12 descends synchronously with the first mold base 11 during the first descending stroke S1, and the forming pressure head 12 remains stationary relative to the second mold base 21 during the second descending stroke S2 ​​of the first mold base 11.

[0050] Of course, in some alternative embodiments, the first mold base 11 may be divided into two layers: an upper fixed layer and a lower floating layer. The fixed layer and the floating layer are connected by a nitrogen spring. The fixed layer is connected to the side pressure trigger 13, and the floating layer is connected to the forming head 12. This allows the forming head 12 to descend synchronously with the first mold base 11 during its first descending stroke S1, and to remain relatively stationary with the second mold base 21 during the second descending stroke S2 ​​of the first mold base 11. The side pressure trigger 13 descends synchronously with the first mold base 11 during its first descending stroke S1 and its second descending stroke S2.

[0051] Specifically, the forming pressure head 12 includes a bending head 121 and a bending column 122. The bending head 121 is detachably disposed at the bottom end of the forming pressure head 12, and the lower end surface of the bending head 121 is an arc surface. The central axis of the bending column 122 is arranged horizontally and longitudinally, and the height of the lower surface of the bending column 122 is higher than the arc surface of the bending head 121. The bending column 122 is located on one side of the bending head 121 in the lateral direction.

[0052] The side pressure member 22 includes a slider 222 and a roller 223. The surface of the roller 223 has a first groove 224. The roller 223 is rotatably disposed on the side of the slider 222 near the forming pressure head 12. In the second downward stroke S2 ​​of the first mold base 11, the roller 223 is higher than the bending column 122.

[0053] The bending head 121 is detachable, making it easy to replace bending heads 121 with different arc surfaces to meet different V-bending angles. For example, when a larger V-bending angle is required, a bending head 121 with a more convex arc surface can be replaced.

[0054] The roller 223 is rotatably mounted on the slider 222. When the stainless steel bar shifts due to bending, the roller 223 rotates, reducing friction with the stainless steel bar. The second inclined surface 221 is provided on the upper end face of the slider 222. Furthermore, the first groove 224 enables longitudinal positioning of the stainless steel bar.

[0055] like Figure 5 As shown, before bending, the forming pressure head 12 is located above the two side pressure members 22, and the two side pressure members 22 are located on both sides of the forming pressure head 12 in the lateral direction. The stainless steel rod is placed inside the first groove 224 of the two side rollers 223 to achieve longitudinal positioning.

[0056] like Figure 2 As shown, when the first mold base 11 reaches the end of the first descent stroke S1, the bending head 121 abuts against the middle of the stainless steel bar, causing the stainless steel bar to bend in a V-shape. At this time, since the roller 223 is higher than the bending column 122, the section of the stainless steel bar near the end also bends accordingly under the action of the bending column 122 and the roller 223.

[0057] like Figure 4 As shown, when the first mold base 11 reaches the end of the second descending stroke S2, the side pressure member 22 moves laterally closer to the forming head 12 under the action of the side pressure trigger member 13. At this time, the roller 223 abuts against the section near the end of the stainless steel rod and pushes the section near the end of the stainless steel rod inward at a negative angle to achieve springback compensation.

[0058] Specifically, the lower mold assembly 2 further includes a support block 23 and a second elastic element 24. The support block 23 is vertically opposite to the forming head 12 and is floatingly disposed in the mold closing notch 211. The second elastic element 24 is disposed within the mold closing notch 211, with its top end connected to the support block 23 and its bottom end connected to the second mold base 21. During the second downward stroke S2 ​​of the first mold base 11, the support block 23 is fixedly abutted against the bottom of the mold closing notch 211. The second elastic element 24 can specifically be a spring. The second mold base 21 has a recessed hole at the bottom of the mold closing notch 211. The bottom of the second elastic element 24 is connected to the bottom wall of the recessed hole, and the top end of the second elastic element 24 protrudes through the recessed hole and connects to the support block 23.

[0059] The upper surface of the support block 23 is provided with a second groove 231 that extends horizontally. The second groove 231 is horizontally aligned with the first groove 224, and the bottom end of the second groove 231 is at the same horizontal height as the bottom end of the first groove 224.

[0060] Specifically, such as Figure 5 As shown, the support block 23 is suspended above the second mold base 21 by a spring. The total load of the first elastic element 16 is greater than the sum of the downward pressure of the second elastic element 24 and twice the pressure of the forming head 12 bending the stainless steel rod. During the first downward stroke S1 of the first mold base 11, when the forming head 12 abuts against the stainless steel rod, the support block 23 and the forming head 12 clamp the stainless steel rod, preventing it from moving laterally and ensuring that the stainless steel rod is V-shaped bent in the middle, thus improving the symmetry of the stainless steel rod.

[0061] More specifically, such as Figure 5 As shown, the first groove 224 and the second groove 231 are arc-shaped grooves to accommodate stainless steel bars.

[0062] Optionally, the slider 222 is provided with a positioning block 225, which protrudes from the upper end face of the slider 222. This allows the end of the stainless steel rod to be aligned and positioned against the positioning block 225.

[0063] Preferably, a recovery mechanism 25 is provided on the side of the slider 222 away from the roller 223. The recovery mechanism 25 includes a pressure cap 251, a second connecting rod 252, and a recovery spring 253. The second connecting rod 252 is horizontally slidably disposed on the second mold base 21. One end of the second connecting rod 252 is connected to the slider 222, and the other end of the second connecting rod 252 extends out of the second mold base 21 and is connected to the pressure cap 251. The recovery spring 253 is sleeved on the second connecting rod 252. One end of the recovery spring 253 is connected to the pressure cap 251, and the other end of the recovery spring 253 is connected to the second mold base 21.

[0064] In this embodiment, when the side-pressure trigger 13 presses down on the second inclined surface 221 of the slider 222, the slider 222 slides towards the forming pressure head 12, causing the roller 223 to push the stainless steel rod inward at a negative lateral angle. During this process, the movement of the slider 222 drives the second connecting rod 252 and the pressure cap 251 to move synchronously, causing the restoring spring 253 to compress and store elastic potential energy. When the side-pressure trigger 13 rises, the side-pressure trigger 13 and the slider 222 separate, the restoring spring 253 releases its elastic potential energy, and drives the pressure cap 251, the second connecting rod 252, and the slider 222 to slide and return to their original position away from the forming pressure head 12. Thus, when the bending is completed and the first mold base 11 rises, the slider 222 resets, causing the roller 223 to leave the stainless steel rod, achieving automatic reset of the side-pressure trigger 22.

[0065] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the concept of the present utility model and using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included in the patent protection scope of the present utility model.

Claims

1. A stainless steel bar bending device, characterized in that: include: Upper mold assembly and lower mold assembly; The upper mold assembly includes a first mold base, a forming head, and a side pressure trigger. The forming head and the side pressure trigger are respectively disposed below the first mold base. The side pressure triggers are spaced apart on one side of the forming head in the lateral direction, and the bottom end of the side pressure trigger is higher than the bottom end of the forming head. The lower mold assembly includes a second mold base and a side pressure member. The second mold base has an upward-facing mold closing notch, which is vertically opposite to the forming pressure head. The side pressure member is located beside the opening of the mold closing notch and is vertically opposite to the side pressure trigger member. The side pressure member is horizontally movable to move horizontally closer to and further away from the forming pressure head. The first mold base is sequentially configured with a first descent stroke and a second descent stroke. The bottom end of the forming pressure head descends synchronously into the mold closing notch with the first descent stroke of the first mold base. The forming pressure head remains stationary relative to the second mold base during the second descent stroke of the first mold base. The side pressure trigger descends synchronously with the first descent stroke and the second descent stroke of the first mold base, and the side pressure trigger drives the side pressure member to move horizontally towards the forming pressure head during the second descent stroke.

2. The stainless steel bar bending device according to claim 1, characterized in that: The bottom end of the side pressure trigger is provided with a first inclined surface, and the top end of the first inclined surface is located close to the forming pressure head relative to the bottom end of the first inclined surface. The upper end of each side pressure component is provided with a second inclined surface that cooperates with the first inclined surface.

3. The stainless steel bar bending device according to claim 2, characterized in that: The side pressure trigger is movably arranged to rise and fall relative to the first mold base. The first mold base is provided with a limiting member, which is used to limit the height of the side pressure trigger relative to the first mold base.

4. A stainless steel bar bending device according to claim 3, characterized in that: The first mold base is provided with a first slide rail and a second slide rail. The first slide rail is vertically arranged, and the side pressure trigger can be slidably arranged in the first slide rail. The second slide rail is horizontally arranged and located above the first slide rail. The top end of the first slide rail is connected to the second slide rail. The limiting member is slidably and lockably disposed within the second slide rail; the lower end face of the limiting member is provided with a third inclined surface, the top end of the third inclined surface is disposed close to the forming pressure head relative to the bottom end of the third inclined surface, and the top end of the side pressure trigger member is provided with a fourth inclined surface that cooperates with the third inclined surface.

5. A stainless steel bar bending device according to claim 4, characterized in that: The first mold base is provided with an adjustment mechanism, which includes a first connecting rod and a fixing block. The first connecting rod is connected to the limiting member, and the fixing block is fixedly connected to the first mold base. The first connecting rod passes through the second slide and is detachably fixedly connected to the fixing block to lock and unlock the limiting member.

6. A stainless steel bar bending device according to any one of claims 1-5, characterized in that: The upper mold assembly further includes a first elastic element, and the forming pressure head is disposed below the first mold base through the first elastic element.

7. A stainless steel bar bending device according to any one of claims 1-5, characterized in that: The forming head includes a bending head and a bending column. The bending head is detachably disposed at the bottom end of the forming head, and the lower end surface of the bending head is an arc surface. The central axis of the bending column is arranged horizontally and longitudinally, and the height of the lower surface of the bending column is higher than the arc surface of the bending head. The bending column is located on one side of the bending head in the transverse direction. The side pressure component includes a slider and a roller. The surface of the roller has a first groove. The roller is rotatably disposed on the side of the slider near the forming pressure head. During the second downward stroke of the first mold base, the roller is higher than the bending column.

8. A stainless steel bar bending device according to claim 7, characterized in that: The lower mold assembly also includes a support block and a second elastic element. The support block is disposed opposite to the forming pressure head and is floatingly disposed in the mold closing notch. The second elastic element is disposed in the mold closing notch. The top end of the second elastic element is connected to the support block and the bottom end of the second elastic element is connected to the second mold base. During the second downward stroke of the first mold base, the support block abuts and is fixed to the bottom of the mold closing notch. The upper surface of the support block is provided with a second groove that extends horizontally. The second groove is horizontally aligned with the first groove, and the bottom end of the second groove is at the same horizontal height as the bottom end of the first groove.

9. A stainless steel bar bending device according to claim 7, characterized in that: The slider is provided with a positioning block, which protrudes from the upper surface of the slider.

10. A stainless steel bar bending device according to claim 7, characterized in that: A recovery mechanism is provided on the side of the slider away from the roller. The recovery mechanism includes a pressure cap, a second connecting rod, and a recovery spring. The second connecting rod is horizontally slidably disposed on the second mold base. One end of the second connecting rod is connected to the slider, and the other end of the second connecting rod passes through the second mold base and is connected to the pressure cap. The recovery spring is sleeved on the second connecting rod. One end of the recovery spring is connected to the pressure cap, and the other end of the recovery spring is connected to the second mold base.

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