Novel riveting structure of square top cover
By coordinating the design of the lower riveting die, the top cover positioning fixture, and the upper riveting die, the problems of skewness and damage to the riveting block assembly were solved, improving riveting quality and efficiency and reducing production costs.
Patent Information
- Application Number
- CN202520385528.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-06
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-03-06
AI Technical Summary
Traditional riveting processes suffer from problems such as misalignment, damage, and low efficiency of riveting block components, leading to substandard product quality and increased costs.
The design employs a coordinated approach involving a lower riveting die, a top cover positioning fixture, and an upper riveting die to ensure precise riveting positions, prevent skewing and damage, and improve riveting efficiency.
It improved the quality and reliability of riveting, reduced scrap rate and labor costs, and increased production efficiency and economic benefits.
Smart Images
Figure CN223819580U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to power battery top cover assembly field, specifically, relate to a square top cover new riveting structure. BACKGROUND
[0002] Riveting technology as an important connection process is widely used in the assembly process of various products. Riveting top cover as one of the common riveting applications, its main role is to connect the top cover and other components firmly together through riveting, to ensure the overall structure and functional integrity of the product.
[0003] In the traditional riveting top cover assembly and riveting process, positive and negative riveting block assemblies are usually used to realize the connection of the top cover and other components. These riveting block assemblies are formed during the injection molding process and have a certain thinness and flexibility. In the riveting process, the riveting block assembly is pressed into the reserved hole of the top cover and other components by applying external force, thereby realizing the connection. This process meets the needs of product assembly to some extent, with the advantages of simple operation and low cost.
[0004] However, with the continuous development of manufacturing industry, the quality and performance requirements of products are also increasing. The traditional riveting process has been difficult to meet the needs of modern manufacturing industry in some aspects. Especially in the application of riveting top cover, due to the thinness of positive and negative riveting block assemblies and the bending of parts during the injection molding process, as well as the small size of the top cover sheet fixing step, a series of problems are prone to occur during riveting.
[0005] Riveting block assembly skew: due to the thinness of positive and negative riveting block assemblies and the bending of parts during the injection molding process, the upper riveting block assembly is prone to skew during riveting. This skew not only affects the appearance quality of the product, but more importantly, it leads to unsatisfactory symmetry, thereby affecting the overall performance and reliability of the product.
[0006] Crushing problem: when the riveting block assembly is skewed, continuing to apply external force for riveting will cause crushing of the upper riveting block assembly. This crushing not only reduces the strength and service life of the riveting block assembly, but also may cause other potential quality problems.
[0007] Low efficiency: the traditional riveting process needs manual adjustment and correction several times during riveting to ensure the correct position of the riveting block assembly. This not only increases the operation difficulty and time cost, but also reduces the production efficiency.
[0008] Cost increase: due to the quality problems prone to occur during riveting, the scrap rate and rework rate increase, which not only increases the production cost, but also affects the economic benefit and market competitiveness of the enterprise.
[0009] In summary, the traditional riveting top cover assembly and riveting process has obvious defects and deficiencies in the prior art, and therefore, a new type of riveting mechanism and technical scheme needs to be developed. Utility model content
[0010] The utility model provides a square top cover novel riveting structure, riveting block skewing phenomenon and bruise problem in riveting down -pressing process are solved, riveting quality, efficiency and reliability are improved, and production cost is reduced.
[0011] The utility model uses technical scheme as follows:
[0012] A square top cover novel riveting structure sequentially includes riveting lower mould, top cover positioning fixture and riveting upper mould,
[0013] The riveting lower mould includes lower mould fixed plate, rivet fixed plate fixed on the lower mould fixed plate and lower mould backing plate connected on the rivet fixed plate, the upper surface of rivet fixed plate is equipped with inlay block, the inlay block passes through the lower mould backing plate, the rivet fixed plate is fixed with rivet for riveting top cover,
[0014] The top cover positioning fixture is placed on the lower mould backing plate, and the top cover positioning fixture includes positioning carrier and backing plate, the backing plate is fixed on the positioning carrier, and the backing plate is provided with rivet avoiding hole corresponding to the position of the rivet;
[0015] The riveting upper mould includes upper mould fixed plate, upper mould backing plate and pole riveting pressing plate, the upper mould backing plate is fixed at the bottom of the upper mould fixed plate, and the pole riveting pressing plate is fixed at the bottom of the upper mould backing plate.
[0016] Further, the upper surface of the lower mould backing plate is fixedly connected with limit blocks at both ends.
[0017] Further, guide column fixing holes are formed around the lower mould backing plate, lower mould guide sleeves are fixed in the guide column fixing holes, lower mould guide columns are arranged around the rivet fixed plate, and the lower mould guide sleeves and the lower mould guide columns are positionally corresponding and connected in cooperation.
[0018] Further, a positioning pin is fixedly installed on the lower mould backing plate, a positioning hole is formed in a corresponding position on the top cover positioning fixture, the positioning pin cooperates with the positioning hole, and accurate placement and positioning of the top cover positioning fixture on the lower mould backing plate are realized.
[0019] Further, the riveting lower mould further includes demoulding spring, spring fixing holes are formed in corresponding positions of the rivet fixed plate and the lower mould backing plate, and the both ends of the demoulding spring are fixedly connected in the spring fixing holes of the rivet fixed plate and the lower mould backing plate respectively.
[0020] Further, the riveting lower die further comprises a stepped guide sleeve, a counter-sunk positioning hole is formed on the lower die backing plate, the head of the stepped guide sleeve is sunk into the counter-sunk positioning hole, and the bottom of the stepped guide sleeve is connected with the rivet needle fixing plate through the lower die backing plate.
[0021] Further, the upper die backing plate is provided with upper die guide columns around the bottom, the upper die guide columns are in position correspondence with and cooperatively connected with the stepped guide sleeves.
[0022] Further, a riveting block limiting step is arranged between the backing plate and the positioning carrier for limiting the parts.
[0023] Further, the material of the positioning carrier is bakelite.
[0024] Further, the material of the backing plate is 45# steel.
[0025] The utility model discloses a riveting structure of square top cover, which is characterized by the following beneficial effects.
[0026] 1. The positioning carrier of the top cover positioning jig is used for loading and preliminarily positioning the parts to be riveted, the riveting lower die is accurately set, the rivet needle fixed in the insert block is aligned with the rivet needle avoiding hole on the backing plate, and the riveting position is ensured to be accurate in the riveting process. Meanwhile, the riveting lower die, the top cover positioning jig and the riveting upper die work cooperatively, so that the parts only produce vertical displacement during riveting, the problems of skewing caused by the thin riveting block assembly and the injection molding bending in the traditional process are avoided, the problems of unsatisfactory symmetry and bruising are effectively solved, the riveting quality is ensured, and the overall performance and reliability of the product are improved.
[0027] 2. The top cover positioning jig is rationally designed, the parts are conveniently placed and positioned, the operation of adjusting and correcting the positions of the parts by workers is reduced, and the operation difficulty and time cost are reduced. The parts are closely matched during the riveting process, the riveting action is cooperatively completed by the pole riveting pressing plate, the rivet needle and the like, the riveting process is more smooth and efficient, the riveting time is significantly shortened, and therefore the overall production efficiency is improved.
[0028] 3. The utility model reduces the waste product rate and the rework rate of the product, reduces the cost loss caused by the defective products. In addition, the labor cost is effectively reduced and the economic benefit is improved in combination with the improvement of the production efficiency due to the reduction of the manual adjustment process. DRAWINGS
[0029] Figure 1 The utility model provides a structure schematic view of novel riveting structure of square top cover;
[0030] Figure 2 The utility model provides a structure schematic view of novel riveting structure of square top cover;
[0031] Figure 3 The utility model provides a structure schematic view of novel riveting structure of square top cover;
[0032] Figure 4 For Figure 3 The structure of the A area is enlarged;
[0033] Figure 5 The riveting upper die structure schematic diagram provided by the utility model;
[0034] Figure 6 The top cover positioning jig structure schematic diagram provided by the utility model;
[0035] Figure 7 The riveting lower die structure schematic diagram provided by the utility model;
[0036] Figure 8 The riveting lower die explosion view provided by the utility model.
[0037] In the drawings, the component list represented by each sign is as follows:
[0038] 1, riveting lower die; 2, top cover positioning jig; 3, riveting upper die; 4, part; 11, lower die fixed plate; 12, rivet fixed plate; 13, lower die backing plate; 14, limit block; 15, insert block; 16, rivet; 17, lower die guide sleeve; 18, demolding spring; 19, step guide sleeve; 110, positioning pin; 111, lower die guide column; 21, positioning carrier; 22, backing plate; 23, riveting block limit step; 24, rivet avoidance hole; 25, positioning hole; 31, upper die fixed plate; 32, upper die backing plate; 33, pole riveting pressure plate; 34, upper die guide column; 41, square top cover; 42, riveting block assembly; 43, sealing ring. DETAILED DESCRIPTION
[0039] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.
[0040] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.
[0041] The embodiment provides a square top cover novel riveting structure, is used for riveting part 4, as Figures 2-4 The square top cover 41 is provided with two riveting block assemblies 42 of positive and negative respectively at the bottom, and the sealing ring 43 is arranged in the interior at the riveting block assembly 42 connected with the square top cover 41.
[0042] As Figure 1As shown, the embodiment successively includes a riveting lower die 1, a top cover positioning jig 2 and a riveting upper die 3, the riveting lower die 1 is used for supporting and positioning a part 4, the top cover positioning jig 2 is used for loading the part 4 to be riveted, and the riveting upper die 3 can be driven downward by a machine to complete a riveting action.
[0043] Specifically, as shown in Figure 7 and Figure 8 , the riveting lower die 1 includes a lower die fixed plate 11, a rivet fixed plate 12 and a lower die backing plate 13. The lower die fixed plate 11 is firmly fixed on the riveting machine by means of bolts or the like to provide a stable support basis for the entire riveting lower die 1; the bottom surface of the rivet fixed plate 12 is fixed on the lower die fixed plate 11 by means of bolts or the like, and the upper surface is provided with an insert block 15 which penetrates the lower die backing plate 13, and the insert block 15 is fixedly provided with a rivet 16 for riveting a square top cover 41; the lower die backing plate 13 is connected with the rivet fixed plate 12 through a demolding spring 18 and a stepped guide sleeve 19, the corresponding positions of the rivet fixed plate 12 and the lower die backing plate 13 are provided with spring fixing holes, the two ends of the demolding spring 18 are fixedly connected in the spring fixing holes of the rivet fixed plate 12 and the lower die backing plate 13 respectively, the lower die backing plate 13 is provided with a countersunk positioning hole, the head of the stepped guide sleeve 19 is sunk into the countersunk positioning hole, and the bottom of the stepped guide sleeve 19 is connected with the rivet fixed plate 12 through the lower die backing plate 13; the upper surface of the lower die backing plate 13 is fixedly connected with a limiting block 14 at both ends, the lower die backing plate 13 is provided with guide column fixing holes around, the guide column fixing holes are fixedly provided with lower die guide sleeves 17, the rivet fixed plate 12 is provided with lower die guide columns 111 around, the lower die guide sleeves 17 and the lower die guide columns 111 are positionally corresponding and cooperatively connected, and the lower die backing plate 13 is fixedly provided with a positioning pin 110.
[0044] Specifically, as shown in Figure 6 and Figure 7 , the top cover positioning jig 2 is placed on the lower die backing plate 13, the top cover positioning jig 2 is provided with a positioning hole 25 corresponding to the position of the positioning pin 110, the positioning pin 110 cooperates with the positioning hole 25 to realize accurate placement and positioning of the top cover positioning jig 2 on the lower die backing plate 13, the top cover positioning jig 2 includes a positioning carrier 21 and a backing plate 22, the material of the positioning carrier 21 is bakelite which can prevent scratching of the part 4 during assembly, the backing plate 22 is fixed on the positioning carrier 21, the material of the backing plate 22 is 45# steel which can prevent the positive and negative riveting block assemblies 42 from falling during riveting assembly, and since the 45# steel has high strength and rigidity, it can ensure that it will not be deformed after being pressed, thereby ensuring the stability of the part 4 during riveting, the backing plate 22 is provided with rivet avoiding holes 24 corresponding to the positions of the rivets 16 to ensure that the rivets 16 can smoothly penetrate during riveting, and the riveting block limiting steps 23 are arranged between the backing plate 22 and the positioning carrier 21 to limit the riveting block assemblies 42 of the part 4.
[0045] Specifically, as shown in Figure 5As shown, the riveting upper die 3 includes an upper die fixed plate 31, an upper die backing plate 32 and a pole riveting pressure plate 33, the upper die fixed plate 31 is fixed on the upper structure of the riveting machine table through bolts, providing stable fixed support for the whole riveting upper die 3, the upper die backing plate 32 is fixed on the bottom of the upper die fixed plate 31 through bolts, the bottom of the upper die backing plate 32 is provided with upper die guide columns 34 around, the upper die guide columns 34 are correspondingly connected with the stepped guide sleeves 19, ensuring the accuracy and stability of the riveting upper die 3 during the up-down movement, the pole riveting pressure plate 33 is fixed on the bottom of the upper die backing plate 32 through bolts, during the riveting process, when the riveting upper die 3 is driven downward by the machine table, the pole riveting pressure plate 33 first contacts the pole part of the square top cover 41, driving the square top cover 41 to compress the internal sealing ring 43.
[0046] The use principle of the utility model is as follows.
[0047] The preparation stage: the positioning pin 110 on the lower die backing plate 13 cooperates with the corresponding positioning hole 25 on the top cover positioning jig 2, ensuring that the top cover positioning jig 2 is accurately placed on the riveting lower die 1.
[0048] The riveting stage
[0049] 1. The riveting machine table drives the riveting upper die 3 to move downward. The pole riveting pressure plate 33 first contacts the pole part of the square top cover 41, and as the riveting upper die 3 continues to press downward, the square top cover 41 compresses the internal sealing ring 43.
[0050] 2. The riveting upper die 3 continues to move downward, and when the upper die backing plate 32 contacts the limiting block 14 on the lower die backing plate 13, each part 4 of the square top cover 41 enters the specified size position. The limiting block 14 ensures that the internal sealing ring 43 in the top cover is compressed to the specified compression position during the riveting process, ensuring product quality.
[0051] 3. The riveting upper die 3 continues to move downward, which will compress the demolding spring 18 between the riveting needle fixed plate 12 and the lower die backing plate 13. As the riveting upper die 3 further presses downward, the square top cover 41 contacts the riveting needle 16 of the lower die, the riveting needle 16 passes through the riveting needle avoiding hole 24 on the backing plate 22, and the riveting needle 16 performs riveting on the riveting block assembly 42 and the square top cover 41, completing the riveting action.
[0052] The demolding and taking stage
[0053] 1. After riveting is completed, the riveting machine table drives the riveting upper die 3 to move upward, at this time the elastic restoring force of the demolding spring 18 separates the riveting needle fixed plate 12 from the lower die backing plate 13, realizing the demolding function. The stepped guide sleeve 19 ensures that the riveting needle fixed plate 12 and the fixed plate of the top cover positioning jig 2 are separated to the specified displacement after demolding, ensuring that the parts 4 will not be excessively pulled.
[0054] 2. The top cover positioning jig 2 is moved away from the riveting lower die 1, and then the qualified product which has completed riveting is taken out from the top cover positioning jig 2, and the whole process is completed.
[0055] The above describes one embodiment of the present application in detail, but the content is only the preferred embodiment of the present application, and cannot be considered to limit the implementation range of the present application. Any equivalent changes and improvements made according to the application range of the present application should still belong to the patent coverage range of the present application.
Claims
1. A novel riveting structure for a square top cover, characterized in that, It includes, in sequence, a lower riveting mold (1), a top cover positioning fixture (2), and an upper riveting mold (3). The riveting lower die (1) includes a lower die fixing plate (11), a rivet fixing plate (12) fixed on the lower die fixing plate (11), and a lower die support plate (13) connected to the rivet fixing plate (12). The upper surface of the rivet fixing plate (12) is provided with an insert (15), the insert (15) passes through the lower die support plate (13), and a rivet (16) for riveting the top cover is fixed inside the insert (15). The top cover positioning fixture (2) is placed on the lower mold support plate (13). The top cover positioning fixture (2) includes a positioning carrier (21) and a support plate (22). The support plate (22) is fixed on the positioning carrier (21). The support plate (22) has a rivet clearance hole (24) corresponding to the position of the rivet (16). The riveting upper mold (3) includes an upper mold fixing plate (31), an upper mold support plate (32), and a pole post riveting pressure plate (33). The upper mold support plate (32) is fixed to the bottom of the upper mold fixing plate (31), and the pole post riveting pressure plate (33) is fixed to the bottom of the upper mold support plate (32).
2. The novel riveting structure for a square top cover according to claim 1, characterized in that, Limiting blocks (14) are fixedly connected to both ends of the upper surface of the lower mold plate (13).
3. The novel riveting structure for a square top cover according to claim 1, characterized in that, The lower mold support plate (13) has guide post fixing holes around its perimeter. A lower mold guide sleeve (17) is fixed inside the guide post fixing holes. A lower mold guide post (111) is provided around the rivet fixing plate (12). The lower mold guide sleeve (17) and the lower mold guide post (111) are positioned and connected.
4. The novel riveting structure for a square top cover according to claim 1, characterized in that, A positioning pin (110) is fixedly installed on the lower mold support plate (13), and a positioning hole (25) is opened at the corresponding position on the top cover positioning fixture (2). The positioning pin (110) cooperates with the positioning hole (25) to realize the accurate placement and positioning of the top cover positioning fixture (2) on the lower mold support plate (13).
5. A novel riveting structure for a square top cover according to claim 1, characterized in that, The riveting lower mold (1) also includes a demolding spring (18). Spring fixing holes are provided at corresponding positions of the rivet fixing plate (12) and the lower mold support plate (13). The two ends of the demolding spring (18) are respectively fixedly connected to the spring fixing holes of the rivet fixing plate (12) and the lower mold support plate (13).
6. The novel riveting structure for a square top cover according to claim 1, characterized in that, The riveting lower die (1) also includes a stepped guide sleeve (19). The lower die support plate (13) has a countersunk positioning hole. The head of the stepped guide sleeve (19) is sunk into the countersunk positioning hole, and the bottom of the stepped guide sleeve (19) passes through the lower die support plate (13) and is connected to the rivet fixing plate (12).
7. A novel riveting structure for a square top cover according to claim 6, characterized in that, The upper mold support plate (32) is provided with upper mold guide pillars (34) around its bottom perimeter. The upper mold guide pillars (34) correspond to and are connected to the stepped guide sleeve (19).
8. A novel riveting structure for a square top cover according to claim 1, characterized in that, A rivet block limiting step (23) is provided between the pallet (22) and the positioning carrier (21) to limit the part (4).
9. A novel riveting structure for a square top cover according to claim 1, characterized in that, The positioning vehicle (21) is made of bakelite.
10. A novel riveting structure for a square top cover according to claim 1, characterized in that, The pallet (22) is made of 45# steel.