Multi-station machining clamp

Abstract

The utility model discloses a multi-station processing clamp which comprises a connecting rod arranged on a rotating seat and a plurality of connecting arms, the plurality of connecting arms are uniformly distributed along the circumferential direction of the connecting rod, each connecting arm is provided with a plurality of groups of clamping parts, the clamping parts are used for clamping products, and when the clamping parts clamp the products, the clamping parts are clamped by the clamping parts. The thickness direction of the product is consistent with the length direction of the connecting arm; the multiple sets of clamping parts on each connecting arm are connected through clamping parts so that the multiple clamping parts can be arranged on the connecting arm in a laminated mode, the clamping part closest to the connecting rod is detachably connected with the end of the connecting arm, and the number of the clamping parts between every two adjacent clamping parts is not less than two. The mobile phone shell spraying device has the advantages that spraying materials sprayed to the same direction by the spraying gun can be sprayed to a plurality of mobile phone shells at a time, the situation that the spraying materials penetrate through the two sides of the mobile phone shells in the thickness direction to cause material waste is reduced, and the effect that the production efficiency can be improved under the situation that the material waste is reduced through the arrangement mode is achieved.

Description

Technical Field

[0001] This utility model relates to the field of mobile phone manufacturing, and in particular to a multi-station machining fixture. Background Technology

[0002] In today's mobile phone manufacturing industry, the appearance quality of the phone casing plays a crucial role in the product's market competitiveness. As a key step in enhancing the aesthetics and protective performance of the phone casing, the efficiency and quality of the spraying process directly impact the production cycle and cost of the phone.

[0003] Currently, the coating technology for the peripheral walls of mobile phone casings in the manufacturing process has significant shortcomings. Existing coating equipment includes a rotating base and connecting rods. The connecting rods extend circumferentially with three to five connecting arms, each holding one product. A spray gun is located on the side of the rotating base. During processing, the spray gun sprays material towards the rotating base, which rotates multiple products, ensuring that all products are evenly coated with material. When processing the peripheral walls, a baffle plate is also placed along the thickness direction of the mobile phone casing to prevent the front of the casing from being coated.

[0004] Each processing run only allows for the coating of three to five phone casings at a time, necessitating frequent loading, coating, and unloading operations in large-scale production. This not only consumes significant time and labor costs but also severely limits production efficiency, extending the overall phone production cycle and making it difficult to meet the market's ever-increasing demand. Furthermore, frequent operations may increase the defect rate due to human factors, further raising production costs. Summary of the Invention

[0005] To improve the production efficiency of mobile phone casings, this utility model provides a multi-station processing fixture.

[0006] This utility model provides a technical solution that adopts the following approach:

[0007] A multi-station machining fixture includes a connecting rod and multiple connecting arms mounted on a rotating base. The multiple connecting arms are evenly distributed along the circumference of the connecting rod. Each connecting arm is provided with multiple sets of clamping parts, which are used to clamp products. When the clamping parts clamp the product, the thickness direction of the product is consistent with the length direction of the connecting arm.

[0008] Multiple clamping parts on each connecting arm are connected by snap-fit ​​connectors, so that multiple clamping parts are stacked on the connecting arm. The clamping part closest to the connecting rod is detachably connected to the end of the connecting arm. The number of snap-fit ​​connectors between adjacent clamping parts is not less than two.

[0009] The first clamping part with the product is installed at the end of the connecting arm. Then, multiple clamping parts are connected to the end of the connecting arm through snap-fit ​​devices, forming a multi-layered stack. At least two snap-fit ​​devices are provided between adjacent clamping parts to prevent relative rotation between them. This ensures that the multiple clamping parts are stably set at the end of the connecting arm. The thickness direction of the clamping parts is consistent with the length direction of the connecting arm, ensuring that adjacent products do not block the peripheral wall to be sprayed after multiple products are installed on the connecting arm. When the rotating seat drives the connecting rod to rotate, the spray gun sprays the coating material in the same direction, which can spray multiple mobile phone shells at once. This helps to reduce the waste caused by the coating material passing through the sides of the thickness direction of the mobile phone shell. This setup can improve production efficiency while reducing material waste.

[0010] Preferably, the clamping part includes a first clamping plate and a second clamping plate, and the product is clamped between the first clamping plate and the second clamping plate. The snap-fit ​​component includes a snap-fit ​​block provided on the first clamping plate and a snap-fit ​​hole provided on the second clamping plate. The snap-fit ​​block of the clamping part closer to the connecting arm is inserted into the snap-fit ​​hole of the adjacent clamping part farther away from the connecting arm. The second clamping plate closest to the connecting arm does not have a snap-fit ​​hole. The snap-fit ​​hole is directly opposite the hollow part of the product.

[0011] In products like mobile phone casings, there is a cutout in the middle for setting up the screen or buttons. The snap-fit ​​hole is aligned with the cutout so that the snap-fit ​​block can pass through the second clamping plate and avoid the product. The clamping device is designed using the product's own structure to make rational use of space.

[0012] Preferably, the card block has an inclined guide surface, and a transition portion is connected between the card block and the first clamping plate. The transition portion passes through the snap-fit ​​hole and abuts against the peripheral wall of the snap-fit ​​hole. The card block abuts against the side of the second clamping plate away from the adjacent clamping portion and closer to the product. The guide surfaces of multiple card blocks snapped onto the same second clamping plate are opposite to each other.

[0013] The guide surface makes it easier to connect adjacent clamping parts together, and the opposing guide surfaces of multiple clamping blocks make the connection between adjacent clamping parts tighter. Align the snap-fit ​​holes of the first clamping plate with the multiple clamping blocks on the second clamping plate, and then push the clamping part closer to the clamping part already installed on the connecting arm. Under the guidance of the guide surface, the clamping block can be pushed into the snap-fit ​​hole, making the connection between multiple clamping parts easier to operate and improving efficiency.

[0014] Preferably, the snap-fit ​​component further includes a locking bolt, with limiting blocks at both ends of the locking bolt. The locking bolt passes through the hollow part of the product, and the first clamping plate and the second clamping plate have limiting holes through which the locking bolt passes. The shape of the limiting holes is adapted to the limiting blocks.

[0015] Align one of the limiting blocks with the clearance hole and insert the locking bolt into the clearance hole until the locking bolt passes through all the clamping parts on the connecting arm. Then rotate the locking bolt to make the limiting block and the limiting hole misalign, so that the limiting block is difficult to pass through the limiting hole. This achieves the mutual misalignment of the two limiting blocks and the limiting hole, so that both ends of the locking bolt clamp all the clamping parts. This makes it difficult for all the clamping parts on the connecting arm to separate from each other, which helps to improve the installation stability of the clamping parts.

[0016] Preferably, each connecting arm has at least two locking bolts.

[0017] Preferably, the first clamping plate has at least two support portions on the side near the second clamping plate belonging to the same group of snap-fit ​​components. The support portions are inserted into the product cutout and abut against the side wall of the cutout.

[0018] The second clamp has two mounting parts on the side of the first clamp that belongs to the same group of clips. The product has multiple mounting structures for connecting mobile phones on the side away from the first clamp. The two mounting parts respectively mount and support two of the mounting structures.

[0019] Preferably, the second clamping plate closest to the end of the connecting arm is provided with a plug-in tube on the side away from the first clamping plate. The plug-in tube has a polygonal cross-section, and the end of the connecting arm is shaped to match the shape of the plug-in tube. When the end of the connecting arm is inserted into the plug-in tube, the peripheral wall of the end of the connecting arm abuts against the inner wall of the plug-in tube.

[0020] The polygonal connecting arm prevents the plug-in cylinder from rotating around the connecting arm, which helps improve the installation stability of the clamping part at the end of the connecting arm.

[0021] Preferably, the end of the connecting arm is provided with two insert plates, which are arranged opposite to each other and are used to insert into the insert tube.

[0022] The spacing between the insert plates provides deformation space for the end of the connecting arm, making it less prone to wear and breakage when the end of the connecting arm is inserted into the insert cylinder.

[0023] Preferably, the side of the insert plates that is far apart from each other has a rounded corner, which is located at the end of the insert plates.

[0024] The rounded corners guide the insertion cylinder, making it easier to insert the insertion plate into the insertion cylinder and making it easier to install the clamping part on the connecting arm.

[0025] In summary, this utility model has the following beneficial technical effects:

[0026] The first clamping part with the product is installed at the end of the connecting arm. Then, multiple clamping parts are connected to the end of the connecting arm through snap-fit ​​devices, forming a multi-layered stack. At least two snap-fit ​​devices are provided between adjacent clamping parts to prevent relative rotation between them. This ensures that the multiple clamping parts are stably set at the end of the connecting arm. The thickness direction of the clamping parts is consistent with the length direction of the connecting arm, ensuring that adjacent products do not block the peripheral wall to be sprayed after multiple products are installed on the connecting arm. When the rotating seat drives the connecting rod to rotate, the spray gun sprays the coating material in the same direction, which can spray multiple mobile phone shells at once. This helps to reduce the waste caused by the coating material passing through the sides of the thickness direction of the mobile phone shell. This setup can improve production efficiency while reducing material waste. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of a multi-station machining fixture according to this utility model.

[0028] Figure 2 This is a cross-sectional view of the clamping part.

[0029] Figure 3 This is an exploded view of the clamping part.

[0030] Explanation of reference numerals in the attached drawings: 1. Connecting rod; 2. Connecting arm; 3. Clamping part; 4. Product; 5. First clamping plate; 6. Second clamping plate; 7. Locking block; 8. Snap-fit ​​hole; 9. Insert plate; 10. Guide surface; 11. Transition part; 12. Locking bolt; 13. Restriction hole; 14. Restriction block; 15. Support part; 16. Insert tube. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1-3 The present invention will be described in further detail below.

[0032] This utility model discloses a multi-station machining fixture.

[0033] Reference Figure 1 as well as Figure 2 A multi-station processing fixture includes a connecting rod 1 and multiple connecting arms 2 disposed on a rotating seat. The multiple connecting arms 2 are evenly distributed along the circumference of the connecting rod 1. Each connecting arm 2 is provided with multiple sets of clamping parts 3. The clamping parts 3 are used to clamp the product 4. When the clamping parts 3 clamp the product 4, the thickness direction of the product 4 is consistent with the length direction of the connecting arm 2.

[0034] Multiple clamping parts 3 on each connecting arm 2 are connected by snap-fit ​​components, so that multiple clamping parts 3 are stacked on the connecting arm 2. The clamping part 3 closest to the connecting rod 1 is detachably connected to the end of the connecting arm 2, and the number of snap-fit ​​components between adjacent clamping parts 3 is not less than two.

[0035] The first clamping part 3 with product 4 is installed at the end of the connecting arm 2. Then, multiple clamping parts 3 are connected to the end of the connecting arm 2 by snap-fit ​​devices between the clamping parts 3, forming a multi-layer stacked state. At least two snap-fit ​​devices are provided between adjacent clamping parts 3, making it difficult for adjacent clamping parts 3 to rotate relative to each other. This allows multiple clamping parts 3 to be stably set at the end of the connecting arm 2. The thickness direction of the clamping parts 3 is consistent with the length direction of the connecting arm 2, ensuring that after multiple products 4 are installed on the connecting arm 2, adjacent products 4 will not block each other from the peripheral wall to be sprayed. When the rotating seat drives the connecting rod 1 to rotate, the spray gun sprays the spraying material in the same direction, which can spray multiple mobile phone shells at once. This helps to reduce the waste caused by the spraying material passing through both sides of the thickness direction of the mobile phone shell. This setting method can improve production efficiency while reducing material waste.

[0036] Reference Figure 2 as well as Figure 3 In this embodiment, the clamping part 3 includes a first clamping plate 5 and a second clamping plate 6. The product 4 is clamped between the first clamping plate 5 and the second clamping plate 6. The snap-fit ​​component includes a snap-fit ​​block 7 provided on the first clamping plate 5 and a snap-fit ​​hole 8 provided on the second clamping plate 6. The snap-fit ​​block 7 of the clamping part 3 closer to the connecting arm 2 is inserted into the snap-fit ​​hole 8 of the adjacent clamping part 3 farther away from the connecting arm 2. The second clamping plate 6 closest to the connecting arm 2 does not have a snap-fit ​​hole 8. The snap-fit ​​hole 8 is directly opposite the hollow part of the product 4.

[0037] The middle of the mobile phone casing product 4 has a cutout for setting the screen or buttons. The card hole 8 is directly opposite the cutout so that the card block 7 can avoid the product 4 after passing through the second clamping plate 6. The clamp is designed by utilizing the structure of the product 4 to make reasonable use of space.

[0038] Reference Figure 2 as well as Figure 3 In this embodiment, the card block 7 is provided with an inclined guide surface 10, and a transition part 11 is connected between the card block 7 and the first clamping plate 5. The transition part 11 passes through the card hole 8 and abuts against the peripheral wall of the card hole 8. The card block 7 abuts against the side of the second clamping plate 6 away from the adjacent clamping part 3 and the side of the first clamping plate 5 close to the product 4. The guide surfaces 10 of the multiple card blocks 7 that are engaged with the same second clamping plate 6 are opposite to each other.

[0039] The guide surface 10 makes it easier to connect adjacent clamping parts 3 together, and the guide surfaces 10 of the multiple clamping blocks 7 are opposite to each other, making the connection between adjacent clamping parts 3 tighter. Align the snap-fit ​​holes 8 of the first clamping plate 5 with the multiple clamping blocks 7 on the second clamping plate 6, and then push the clamping part 3 close to the clamping part 3 already installed on the connecting arm 2. Under the guidance of the guide surface 10, the clamping block 7 can be pushed into the snap-fit ​​hole 8, making the connection between the multiple clamping parts 3 easier to operate and improving efficiency.

[0040] Reference Figure 2 as well as Figure 3 In this embodiment, the snap-fit ​​component also includes a locking bolt 12, with limiting blocks 14 at both ends of the locking bolt 12. The locking bolt 12 passes through the hollow part of the product 4. The first clamping plate 5 and the second clamping plate 6 have limiting holes 13 through which the locking bolt 12 passes. The shape of the limiting holes 13 is adapted to the limiting blocks 14.

[0041] Align one of the limiting blocks 14 with the clearance hole and insert the locking bolt 12 into the clearance hole until the locking bolt 12 passes through all the clamping parts 3 on the connecting arm 2. Then rotate the locking bolt 12 so that the limiting block 14 is misaligned with the limiting hole 13, making it difficult for the limiting block 14 to pass through the limiting hole 13. This achieves the mutual misalignment of the two limiting blocks 14 with the limiting hole 13, thereby clamping all the clamping parts 3 at both ends of the locking bolt 12. This makes it difficult for all the clamping parts 3 on the connecting arm 2 to separate from each other, which helps to improve the installation stability of the clamping parts 3.

[0042] Reference Figure 2 as well as Figure 3 In this embodiment, each connecting arm 2 has at least two locking bolts 12.

[0043] Reference Figure 2 as well as Figure 3 In this embodiment, the first clamping plate 5 is provided with at least two support parts 15 on the side near the second clamping plate 6 which belongs to the same group of snap-fit ​​parts. The support parts 15 are inserted into the hollow part of the product 4 and abut against the side wall of the hollow part into which they are inserted.

[0044] The second clamping plate 6 has two mounting parts on the side near the first clamping plate 5 which belongs to the same group of card connectors. The product 4 has multiple installation structures for connecting mobile phones on the side away from the first clamping plate 5. The two mounting parts respectively mount and support two of the installation structures.

[0045] The support part 15 is configured as a right-angle plate, with two right-angle plates respectively located at the top and bottom cutouts of the product 4. The other side of the right-angle plate abuts against the other side wall of the cutout. When installing the fixture, the second clamping plate 6 is first installed on the connecting arm 2 or on the clamping part 3 already installed at the end of the connecting arm 2. Then, the product 4 is pre-installed on the first clamping plate 5 through the support part 15. The installation structure of the product 4 is then aligned with the two mounting parts. The product 4 itself is used to set up a structure with multiple supports to pre-fix the product 4 from both sides. At the same time, the product 4 pre-fixes the first clamping plate 5 and the second clamping plate 6, making the subsequent installation of the locking bolt 12 simpler and faster, which helps to improve the efficiency of installing the product 4 on the fixture, thereby improving the processing efficiency of the product 4.

[0046] Reference Figure 2 as well as Figure 3 In this embodiment, the second clamping plate 6 closest to the end of the connecting arm 2 is provided with a plug tube 16 on the side away from the first clamping plate 5. The plug tube 16 has a polygonal cross section, and the end of the connecting arm 2 is shaped to match the shape of the plug tube 16. When the end of the connecting arm 2 is inserted into the plug tube 16, the peripheral wall of the end of the connecting arm 2 abuts against the inner wall of the plug tube 16.

[0047] The polygonal connecting arm 2 prevents the plug-in cylinder 16 from rotating around the connecting arm 2, which helps to improve the installation stability of the clamping part 3 at the end of the connecting arm 2.

[0048] Reference Figure 2 as well as Figure 3 In this embodiment, the end of the connecting arm 2 is provided with two insert plates 9, which are arranged opposite to each other and are used to insert into the insert tube 16.

[0049] The spacing between the insert plates 9 provides deformation space for the end of the connecting arm 2, making it less prone to wear and breakage when the end of the connecting arm 2 is inserted into the insert cylinder 16.

[0050] Reference Figure 2 as well as Figure 3 In this embodiment, the side of the insert plate 9 that is far apart from each other is provided with a rounded corner, which is located at the end of the insert plate 9.

[0051] The rounded corners guide the insertion cylinder 16, making it easier for the insertion plate 9 to be inserted into the insertion cylinder 16, and making it easier for the clamping part 3 to be installed on the connecting arm 2.

[0052] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A multi-station machining fixture, characterized by: The connecting rod is arranged on the rotating base, and a plurality of connecting arms are uniformly distributed along the circumference of the connecting rod. The plurality of clamping portions on each connecting arm are connected by clamping pieces to be stacked on the connecting arm.

2. The multi-station machining jig according to claim 1, characterized by: The clamping portion includes a first clamping plate and a second clamping plate, and the product is clamped between the first clamping plate and the second clamping plate.

3. The multi-station machining jig according to claim 2, characterized by: The clamping piece includes a clamping block arranged on the first clamping plate and a clamping hole arranged on the second clamping plate.

4. The multi-station machining jig according to claim 2, characterized by: The clamping block of the clamping portion closest to the connecting arm is inserted into the clamping hole of the clamping portion farthest from the connecting arm.

5. The multi-station machining jig according to claim 4, characterized by: The clamping block is provided with an inclined guide surface, and a transition portion is connected between the clamping block and the first clamping plate.

6. The multi-station machining jig according to claim 4, characterized by: The transition portion penetrates the clamping hole and abuts against part of the clamping hole wall. The clamping block abuts against the side of the second clamping plate farthest from the first clamping plate of the adjacent clamping portion and closest to the product.

7. The multi-station machining jig according to claim 6, characterized by: The guide surfaces of the plurality of clamping blocks clamped on the same second clamping plate are mutually opposite.

8. The multi-station machining jig according to claim 7, characterized by: The clamping piece further includes a locking pin, both ends of the locking pin are provided with limiting blocks, the locking pin penetrates the hollow portion of the product, the first clamping plate and the second clamping plate are provided with limiting holes for the locking pin to penetrate.

9. The multi-station machining jig according to claim 8, characterized by: Each connecting arm is provided with at least two locking pins. The first clamping plate is provided with at least two support portions on the side close to the second clamping plate of the same group of clamping pieces. The second clamping plate is provided with two support portions on the side close to the first clamping plate of the same group of clamping pieces. The side of the second clamping plate farthest from the first clamping plate is provided with an insertion cylinder, the cross section of the insertion cylinder is a polygon, and the end of the connecting arm is a shape adapted to the shape of the insertion cylinder. The end of the connecting arm is provided with two insertion plates, the two insertion plates are oppositely arranged, and the two insertion plates are used for being inserted into the insertion cylinder. The side of the insertion plate farthest from each other is provided with a round corner, and the round corner is arranged at the end of the insertion plate.

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