Die for pressing weld joint after butt welding of stainless steel soup ladle

Abstract

The utility model discloses a stainless steel soup ladle butt welding post pressure weld mould, the soup ladle comprises a handle part, a handle head precision casting and a ladle head, the two ends of the handle head precision casting are respectively welded and fixed with the handle part and the ladle head, the joint of the handle head precision casting and the ladle head is provided with two arc-shaped weld joints, and the arc-shaped weld joints are welded and fixed with the handle part. According to the die for pressing the weld joints after butt welding of the stainless steel soup ladle, the two arc-shaped weld joints are extruded through the supporting piece and the pressing block correspondingly, local tiny dislocation caused by welding heat shrinkage can be corrected easily, the two sides of the arc-shaped weld joints tend to be flush, perfect smooth transition can be achieved only through extremely small cutting in subsequent grinding, and the production efficiency is improved. The thickness reduction of a handle head precision casting and a spoon head caused by subsequent excessive polishing is avoided, meanwhile, the applied pressure is beneficial to grain refinement, microstructure densification promotion and closing of tiny air holes or looseness, after an arc-shaped welding seam is compacted, internal defects of the arc-shaped welding seam are greatly reduced, the density is remarkably improved, and the welding quality is improved. And black seams caused by internal defects or looseness are not easy to appear any more.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to a mold for pressing the weld seam after butt welding of a stainless steel soup spoon. Background Technology

[0002] Metal tableware is an essential part of our daily lives. Currently, metal tableware on the market includes spoons, spatulas, etc.

[0003] There is a Chinese invention patent published on January 10, 2025, with publication number CN119017030B, which describes an automatic production process for metal soup spoons. The soup spoons produced include, for example, […]. Figure 5 The handle, the precision-cast stem, and the spoon head shown are shown. The two ends of the precision-cast stem are welded to the handle and the spoon head respectively, forming two arc-shaped welds. Therefore, the welds need to be polished and ground afterward.

[0004] If the weld is polished directly after welding, the weld seam may be misaligned or raised during welding, which will require a large amount of cutting to polish the weld seam, resulting in a weak product. If not pre-treated, the surface of the spoon will have obvious black seams, black spots or unevenness after polishing, which does not meet the customer's appearance quality requirements and has an extremely high defect rate. Utility Model Content

[0005] In order to overcome the shortcomings of the existing technology, this utility model provides a mold for pressing the weld seam after butt welding of stainless steel soup spoons, so as to solve the problem that when the weld seam is misaligned or raised during welding, the amount of cutting required for grinding and polishing of the weld seam will be large, resulting in the product being weak. If it is not pre-treated, obvious black seams, black spots or step differences will appear on the surface of the soup spoon after grinding and polishing.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a mold for pressing the weld seam after butt welding of a stainless steel soup spoon, the soup spoon including a handle part, a precision-cast handle head and a spoon head, the two ends of the precision-cast handle head being welded and fixed to the handle part and the spoon head respectively, the connection between the precision-cast handle head and the spoon head having two arc-shaped weld seams, the mold including:

[0007] Download template;

[0008] A support component is fixed to the lower template. The size of the top surface of the support component is larger than the size of the precision casting of the shank. The top surface of the support component is provided with the shape of the precision casting of the shank.

[0009] The punch has a notch at one end facing the support member;

[0010] A pressure block, which is fixed in the notch and is located directly above the support member;

[0011] When the mold is closed, the two arc-shaped welds abut against the pressure block and the support member, respectively.

[0012] Preferably, the support member is detachably fixed to the side wall of the lower template, and the side wall of the lower template is detachably fixed with a support block for supporting the spoon head.

[0013] Preferably, the top surface of the lower template is provided with two positioning posts, and the gap between the two positioning posts is adapted to the width of the handle.

[0014] Preferably, it also includes a clamping mechanism for fixing the spoon head to the support block.

[0015] Preferably, it further includes a lower mold base, an upper mold base, a pad, and a guide post. The top surface of the pad has an movable hole adapted to the guide post. The lower mold plate and the pad are both fixed to the surface of the lower mold base facing the upper mold base. The punch and the guide post are both fixed to the surface of the upper mold base facing the lower mold base. The clamping mechanism is fixed to the side wall of the pad.

[0016] Preferably, the pressing mechanism includes a first support plate, a first connecting rod, a second connecting rod, a third connecting rod, and a fixing block. The first support plate is detachably fixed to the side wall of the pad block. The first connecting rod and the third connecting rod are respectively hinged to the first support plate. The two ends of the second connecting rod are respectively hinged to the first connecting rod and the third connecting rod. When the two hinge points of the second connecting rod with the first connecting rod and the third connecting rod, and the hinge point of the third connecting rod with the first support plate are in a straight line, the pressing mechanism is in a locked and fixed state.

[0017] Compared with the prior art, the beneficial effects that this utility model can achieve are:

[0018] This invention uses a support and a pressure block to compress two arc-shaped welds, which helps correct minor local misalignments caused by welding heat shrinkage. This makes the two sides of the arc-shaped welds more even, allowing for a perfectly smooth transition with minimal cutting during subsequent grinding. This avoids the thinning of the handle and spoon head caused by excessive grinding. The applied pressure also helps refine the grains, promotes the densification of the microstructure, and closes tiny pores or looseness. After compaction, the internal defects of the arc-shaped welds are significantly reduced, and the density is significantly improved, making it less likely for internal defects or looseness to cause "black seams." At the same time, the flattening process also helps remove some surface oxide scale, significantly reducing protruding foreign objects (spatters) and shallow defects on the surface. During subsequent grinding, the surface is more uniform and less prone to pits or bumps caused by spatter or defects, thus preventing these areas from becoming sources of dirt and grime that appear as "black spots." Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the upper mold base, punch, notch, pressure block and guide post structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the lower mold base, lower template, support member, support block, positioning column, pad block and clamping mechanism of this utility model;

[0022] Figure 4 This is a schematic diagram of the pressing mechanism of this utility model;

[0023] Figure 5 A schematic diagram of the structure of the spoon after assembly, showing the precision casting of the handle and the spoon head;

[0024] The components are: 1. Lower mold base; 2. Lower template; 3. Upper mold base; 4. Punch; 41. Groove; 42. Pressure block; 5. Support component; 6. Support block; 7. Positioning post; 8. Pad block; 9. Guide post; 10. Clamping mechanism; 101. First support plate; 102. First connecting rod; 103. Second connecting rod; 104. Third connecting rod; 105. Fixing block. Detailed Implementation

[0025] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model is further described below in conjunction with specific embodiments. However, the following embodiments are only preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of this utility model.

[0026] like Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, this utility model provides a mold for pressing the weld seam after butt welding of a stainless steel soup spoon. The soup spoon includes a handle, a precision-cast handle head, and a spoon head. The two ends of the precision-cast handle head are welded and fixed to the handle and the spoon head respectively. The connection between the precision-cast handle head and the spoon head has two arc-shaped weld seams (e.g., ...). Figure 5 (At point A), the mold includes a lower template 2, a support 5, a punch 4, and a pressure block 42;

[0027] The support 5 is fixed on the lower template 2. The top surface of the support 5 is provided with a shape similar to the precision casting of the handle. The size of the support 5 here is larger than the size of the precision casting of the handle, so that it can support part of the spoon head.

[0028] The punch 4 has a notch 41 at one end facing the support 5;

[0029] The pressure block 42 is fixed in the notch 41, and the pressure block 42 is located directly above the support member 5;

[0030] When the mold is closed, the two arc-shaped welds abut against the pressure block 42 and the support 5 respectively, and the precision casting of the handle will not contact the inner wall of the notch 41, so as to avoid damaging the precision casting.

[0031] After the two ends of the precision-cast handle are welded and fixed to the handle and the spoon head respectively, the connection between the precision-cast handle and the spoon head is placed on the support 5. At this time, the punch 4 is facing an arc-shaped weld at the connection between the precision-cast handle and the spoon head. By adjusting the punch 4 to move closer to the support 5, until the pressure block 42 contacts the arc-shaped weld, the support 5 and the pressure block 42 squeeze the two arc-shaped welds respectively. The pressure helps to correct the local minor misalignment caused by welding heat shrinkage, making the two sides of the arc-shaped weld more even. Subsequent grinding only requires a very small amount of cutting to achieve a perfect and smooth transition, avoiding the damage to the precision-cast handle caused by excessive grinding later. Thinning of the casting and spoon head, along with the applied pressure, helps refine the grains, promotes the densification of the microstructure, and closes tiny pores or looseness. After compaction, the internal defects of the arc weld are greatly reduced, and the density is significantly improved. It is no longer easy for the "black seam" caused by internal defects or looseness to appear. At the same time, the flattening process also helps to remove some of the surface oxide scale, significantly reducing the protruding foreign objects (spatters) and shallow defects on the surface. During subsequent grinding, the surface is more uniform and less likely to produce pits or bumps caused by spatter or defects, thus preventing these areas from becoming the source of dirt and grime that appears as "black spots".

[0032] like Figure 3 As shown, the support 5 is detachably fixed to the side wall of the lower template 2. The side wall of the lower template 2 is detachably fixed with a support block 6 for supporting the spoon head. The support block 6 can position and support the spoon head, so as to facilitate quick placement of the soup spoon. Here, the support 5 and the support block 6 can be locked and fixed to the lower template 2 by screws, so as to facilitate disassembly, maintenance or replacement of the support 5 and the support block 6.

[0033] like Figure 3 As shown, the top surface of the lower template 2 is provided with two positioning posts 7. The gap between the two positioning posts 7 is adapted to the width of the handle. By setting two positioning posts 7, the ladle can be positioned quickly, and the handle is locked between the two positioning posts 7 to ensure that it will not shake, thereby ensuring the stability of the pressure welding work.

[0034] like Figures 1-3As shown, it also includes a lower die base 1, an upper die base 3, a pad block 8, and a guide post 9. The upper die base 3 can be driven by a cylinder to move closer to or away from the lower die base 1 (the cylinder is not shown in the figure, which is relative to the prior art and will not be described in detail here). The top surface of the pad block 8 has an movable hole that matches the guide post 9. The lower die plate 2 and the pad block 8 are both fixed to the surface of the lower die base 1 facing the upper die base 3. The punch 4 and the guide post 9 are both fixed to the surface of the upper die base 3 facing the lower die base 1. The clamping mechanism 10 is fixed to the side wall of the pad block 8. By setting the guide post 9 and the pad block 8, it plays a guiding role, so that the punch 4 moves stably closer to or away from the support member 5.

[0035] like Figure 1 , Figure 3 and Figure 4 As shown, it also includes a clamping mechanism 10 for fixing the spoon head to the support block 6. Specifically, the clamping mechanism 10 includes a first support plate 101, a first connecting rod 102, a second connecting rod 103, a third connecting rod 104, and a fixing block 105. The first support plate 101 is detachably fixed to the side wall of the pad block 8. The first connecting rod 102 and the third connecting rod 104 are respectively hinged to the first support plate 101. The two ends of the second connecting rod 103 are respectively hinged to the first connecting rod 102 and the third connecting rod 104. When the two hinge points of the second connecting rod 103 with the first connecting rod 102 and the third connecting rod 104, and the hinge point of the third connecting rod 104 with the first support plate 101 are in a straight line (e.g., Figure 4 As shown, when the clamping mechanism 10 is in a locked and fixed state, the mechanism is in a dead point position. At this time, no matter how much reaction force (except for destructive reaction force) the clamped workpiece has, it cannot loosen the fixed block 105. This is the dead point clamping principle in mechanical mechanics. The specific operating principle of this type of clamping mechanism 10 will not be described in detail here.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mold for pressing the weld seam after butt welding of a stainless steel soup spoon, the soup spoon comprising a handle part, a precision-cast handle head, and a spoon head, wherein the two ends of the precision-cast handle head are respectively welded and fixed to the handle part and the spoon head, and the connection between the precision-cast handle head and the spoon head has two arc-shaped weld seams, characterized in that, The mold includes: Template (2) is below; Support (5), the support (5) is fixed on the lower template (2), the size of the top surface of the support (5) is larger than the size of the shank precision casting, and the top surface of the support (5) is provided with the shape of the shank precision casting; Punch (4), the punch (4) has a notch (41) at one end facing the support (5); A pressure block (42) is fixed in a notch (41) and is located directly above the support member (5); When the mold is closed, the two arc-shaped welds abut against the pressure block (42) and the support member (5), respectively.

2. The mold for pressing the weld seam after butt welding of a stainless steel soup spoon according to claim 1, characterized in that: The support member (5) is detachably fixed to the side wall of the lower template (2), and the side wall of the lower template (2) is detachably fixed with a support block (6) for supporting the spoon head.

3. The mold for pressing the weld seam after butt welding of a stainless steel soup spoon according to claim 2, characterized in that: The top surface of the lower template (2) is provided with two positioning posts (7), and the gap between the two positioning posts (7) is adapted to the width of the handle.

4. The mold for pressing the weld seam after butt welding of a stainless steel soup spoon according to claim 2, characterized in that: It also includes a clamping mechanism (10) for fixing the spoon head to the support block (6).

5. The mold for pressing the weld seam after butt welding of a stainless steel soup spoon according to claim 4, characterized in that: It also includes a lower mold base (1), an upper mold base (3), a pad (8) and a guide post (9). The top surface of the pad (8) is provided with an movable hole that matches the guide post (9). The lower mold plate (2) and the pad (8) are both fixed to the surface of the lower mold base (1) facing the upper mold base (3). The punch (4) and the guide post (9) are both fixed to the surface of the upper mold base (3) facing the lower mold base (1). The clamping mechanism (10) is fixed to the side wall of the pad (8).

6. The mold for pressing the weld seam after butt welding of a stainless steel soup spoon according to claim 4, characterized in that: The pressing mechanism (10) includes a first support plate (101), a first connecting rod (102), a second connecting rod (103), a third connecting rod (104), and a fixing block (105). The first support plate (101) is detachably fixed to the side wall of the pad block (8). The first connecting rod (102) and the third connecting rod (104) are respectively hinged to the first support plate (101). The two ends of the second connecting rod (103) are respectively hinged to the first connecting rod (102) and the third connecting rod (104). When the two hinge points of the second connecting rod (103) with the first connecting rod (102) and the third connecting rod (104) and the hinge point of the third connecting rod (104) with the first support plate (101) are in a straight line, the pressing mechanism (10) is in a locked and fixed state.

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