Machining method of windscreen wiper base
By using a progressive die continuous stamping method to process the wiper base, the problems of high cost and low efficiency of casting are solved, achieving high strength and low cost production results.
Patent Information
- Application Number
- CN202510778892.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-11
- Publication Date
- 2025-11-07
Smart Images
Figure CN120901160A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to a processing method of a wiper base. BACKGROUND
[0002] The wiper generally comprises a wiper blade, a wiper arm and a joint, wherein the joint is a mechanism connecting the wiper blade and the wiper arm, and an important component in the joint is a base. Figure 1-2 In the prior art, a conventional wiper base 100 is shown, which comprises an upper part 101 and a lower part 102, the upper part 101 comprises two vertical side walls 103, the two side walls 103 are connected by a connecting block 104, the bottom of the connecting block 104 is provided with a semicircular arc-shaped groove. The lower part 102 comprises two left and right clamping grooves 105 and a recess 106 at the middle position.
[0003] Referring to Figure 1 and 2 In use, the clamping grooves 105 on the base are matched with the steel bars 201 on the wiper blade 200, the recess 106 is matched with the protrusion 202 at the back of the wiper blade 200, and the middle position of the base 100 is further provided with a protrusion 107 towards the middle, which is clamped into the gap 203 on the wiper blade.
[0004] This kind of base is usually made by casting in the past, which has high cost, and the quality of the product is not high, and the production efficiency is very low. It is relatively easy to think of using stamping to process this product, but if the base is completely according to the structure shown in Figure 1 , it is impossible to stamp it out, especially the connecting block of the upper part is impossible to stamp out, so it is necessary to improve. SUMMARY
[0005] The present application aims to provide a processing method of a wiper base, which is made by stamping, greatly improving the production efficiency and the product quality.
[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a processing method of a wiper base, comprising the following steps: 1) stamping out a half frame on a material belt, the half frame has a first protruding part on one side, the first protruding part is provided with a second protruding part on one side, the first protruding part and the second protruding part are separated by a first recess, the first protruding part is provided with a through hole, the second protruding part is provided with a circular clamping groove, and the clamping groove is provided with a gap; 2) punch out another half frame on the material strip, the other side of the frame is symmetrically distributed with the half frame punched out in the previous step, a protrusion is arranged on the second protruding part of the other side of the frame, the protrusion is matched with the notch, and the frame and the material strip are communicated through the connecting strip; 3) punch the second protruding part into a semicircular component, punch out three special-shaped grooves at the middle position of the frame, a partition strip is arranged on both sides of the three special-shaped grooves, and inwardly protruding baffles are formed on the two opposite end faces of the special-shaped grooves; 4) bend the component by 90° to one side through punching, which is perpendicular to the frame, to form a semicircular groove coaxial with the through hole, and the middle part of the partition strip is bent upward, and a plane is formed at the top; 5) fold the baffles downward and keep the end part horizontal; 6) bend the end part of the baffles on both sides upward to form a hook part.
[0007] 7) bend the two ends of the frame by 90° along the end part of the special-shaped groove, the frame after bending forms a side wall of the base, the hook part and the positioning part are also rotated by 90°, meanwhile, the protrusion is inserted into the clamping groove, and the two second protruding parts are combined into a semicircular clamping opening; 8) punch the end part of the hook part into a horizontal part, and the end part of the hook part forms a clamping groove; 9) punch the connecting strip to form a base.
[0008] The base is made by punching, the made base has higher strength, higher production efficiency, and greatly reduced production cost.
[0009] As a preferred embodiment of the application, in step 2, the outer circle of the protrusion is circular.
[0010] As a preferred embodiment of the application, the frame width of the outer circle of the through hole is equal to the thickness of the material strip.
[0011] Compared with the prior art, the application has the following beneficial effects: The base is made by punching, the made base has higher strength, higher production efficiency, and greatly reduced production cost. BRIEF DESCRIPTION OF DRAWINGS
[0012] Figure 1 It is a schematic view of the cooperation of the existing base and the wiper strip.
[0013] Figure 2 It is a schematic view of the back of Figure 1
[0014] Figure 3 A schematic diagram of the material belt of the present application.
[0015] Figure 4 A schematic diagram when step 1.
[0016] Figure 5 A schematic diagram when step 2.
[0017] Figure 6 A schematic diagram when step 3.
[0018] Figure 7 A schematic diagram when step 4.
[0019] Figure 8 A schematic diagram when step 5.
[0020] Figure 9 A schematic diagram when step 6.
[0021] Figure 10 A schematic diagram when step 7.
[0022] Figure 11 A schematic diagram when step 8.
[0023] Figure 12 A schematic diagram when step 9. DETAILED DESCRIPTION
[0024] In order to make the technical means, creative features, purposes and effects of the present application easy to understand, the present application will be further described below in conjunction with specific embodiments.
[0025] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.
[0026] Please refer to Figure 3 The present application provides a technical solution: a processing method of a wiper base, which gradually punches a material belt into a base through a progressive die continuous punching mode.
[0027] 1) Please refer to Figure 4, the first extension part 11 is provided with a second extension part 12 on one side, the first extension part and the second extension part are separated by a first groove 13, a through hole 111 is arranged on the first extension part, a circular clamping groove 121 is arranged on the second extension part 12, and a notch 12a is arranged on the clamping groove 121; 2) see Figure 5 , another half frame body 1a is punched out on the material strip, the other side of the frame body is symmetrically distributed with the half frame body punched out in the previous step, a protrusion 12b is arranged on the second extension part of the other side of the frame body, the outer circle of the protrusion is circular, the protrusion matches the notch, and the frame body and the material strip are communicated through a connecting strip 1b; 3) see Figure 6 The second extension part is punched into a semicircular component 12', and three special-shaped grooves 14 are punched out in the middle of the frame body, the two sides of the three special-shaped grooves 14 are provided with a partition strip 16, and inwardly protruding baffles 17 are formed on the two opposite end faces of the special-shaped grooves 14; 4) see Figure 7 The component 12' is bent 90° to one side by punching, perpendicular to the frame body, forming a semicircular groove coaxial with the through hole 111, the frame width of the outer circle of the through hole is equal to the thickness of the material strip, and the middle part of the partition strip 16 is bent upward, and a plane 16a is formed at the top; 5) see Figure 8 The end of the baffle 17 is folded downward, and the end part is kept horizontal; 6) see Figure 9 The end of the baffle 17 on both sides is bent upward to form a hook part 171.
[0028] 7) see Figure 10 The two ends of the frame body 1a are bent 90° along the end of the special-shaped groove 14, the frame body after bending forms the side wall of the base, the hook part and the positioning part are also rotated 90°, and the protrusion is inserted into the clamping groove, and the two second extension parts are combined into a semicircular clamping groove; 8) see Figure 11 The end of the hook part is punched into a horizontal state, and the end of the hook part forms a clamping groove 17'; 9) Figure 12 The connecting strip 1b is punched off to form a base.
[0029] The base is made by punching, the made base has higher strength, higher production efficiency, and greatly reduced production cost.
Claims
1. A method of processing a wiper blade base, characterized in that The method comprises the following steps: 1) punching out a half frame on a material strip, the half frame having a first extension on one side, the first extension having a second extension on one side, the first extension and the second extension being separated by a first groove, the first extension having a through hole, the second extension having a circular clamping slot, the clamping slot having a notch; 2) punching out another half frame on the material strip, the other side of the half frame being symmetrically distributed with the half frame punched out in the previous step, the second extension on the other side of the half frame having a protrusion, the protrusion matching the notch, the half frame and the material strip being connected by a connecting strip; 3) punching the second extension into a semicircular component, and punching three special-shaped grooves in the middle of the half frame, the two sides of the special-shaped grooves having a separation strip, the two opposite end faces of the special-shaped grooves having an inwardly extending baffle; 4) bending the component 90° to the side by punching, perpendicular to the half frame, forming a semicircular slot coaxial with the through hole, and bending the middle part of the separation strip upward, the top forming a flat surface; 5) folding the baffle downward and keeping the end part horizontal; 6) bending the end part of the baffle on both sides upward to form a hook part; 7) bending the two ends of the half frame 90° along the end part of the special-shaped groove, the bent half frame forming a side wall of a base, the hook part and the positioning part also rotating 90°, while the protrusion is inserted into the clamping slot, and the two second extensions combine into a semicircular clamping slot; 8) punching the end part of the hook part into a horizontal part, the end part of the hook part forming a clamping slot; 9) punching the connecting strip to form a base.
2. The method of claim 1, wherein In step 2, the outer circle of the protrusion is circular.
3. The method of claim 1, wherein the step of forming the base of the wiper blade includes the step of: The frame width of the outer circle of the through hole is equal to the thickness of the material strip.