Inner and outer ring chamfering clamping plate for shading ring punching

Abstract

The utility model belongs to the field of shading rings, and discloses an inner and outer ring chamfering clamping plate for shading ring punching, which comprises an upper die and a lower die, the upper die is mounted on a punch die, and the lower die is mounted on a punch base and corresponds to the upper die; a lower punch is installed on the lower die and used for punching the outer circle of the shading ring, a small hole is formed in the lower punch, and the ejector pin is used for controlling the chamfering depth. The upper die comprises an upper die plate, an upper clamping plate, an upper base plate and a female die plate, and the upper die plate, the upper clamping plate, the upper base plate and the female die plate are sequentially arranged from top to bottom. According to the scheme, the upper punch used for punching the inner circle and the lower punch used for punching the outer circle are integrated, the upper punch is punched into the small hole of the lower punch during punching, chamfering machining of the inner ring and the outer ring of the shading ring can be completed at the same time in the one-time punching process, production procedures and operation procedures are reduced, the production period is greatly shortened, and the production efficiency is remarkably improved; and the requirement of large-scale production is met.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of light shielding ring, more specifically, to a light shielding ring punching inner and outer ring chamfering clamping plate. BACKGROUND

[0002] In the field of optical equipment, photographic equipment, etc., the light shielding ring is a commonly used component, which mainly blocks stray light and improves the imaging quality of the optical system. In the production process, the inner and outer rings of the light shielding ring need to be chamfered to meet the assembly and use requirements.

[0003] The traditional light shielding ring inner and outer ring chamfering processing method usually adopts two stamping processes to chamfer the inner and outer rings respectively. This processing method has the following problems:

[0004] 1. Low production efficiency: Since two stamping processes are required, the production process and time are increased, resulting in low production efficiency, which cannot meet the needs of large-scale production.

[0005] 2. Difficulty in ensuring precision: In the two stamping processes, due to factors such as positioning error, it is difficult to ensure the concentricity and dimensional accuracy of the inner and outer ring chamfers, which can easily lead to unstable product quality and high scrap rate.

[0006] 3. Complex die structure: In order to achieve two stamping, the die structure is usually complex, increasing the difficulty of die design and manufacturing, and also increasing the cost and maintenance difficulty of the die.

[0007] Therefore, a die is needed that can complete the chamfering of the inner and outer rings of the light shielding ring in one stamping process to improve production efficiency and product quality and reduce production cost. SUMMARY

[0008] The utility model aims at solving the shortcomings in the prior art and provides a light shielding ring punching inner and outer ring chamfering clamping plate.

[0009] To solve the above problems, the utility model adopts the following technical scheme:

[0010] A light shielding ring punching inner and outer ring chamfering clamping plate, comprising an upper die and a lower die, the upper die is installed on the punch die, and the lower die is installed on the punch base and corresponds to the upper die;

[0011] A lower punch is installed on the lower die, the lower punch is used for punching the outer circle of the light shielding ring, a small hole is opened in the lower punch, a thimble is arranged in the small hole, and the thimble is used for controlling the depth of the chamfer;

[0012] The upper die comprises an upper die plate, an upper clamping plate, an upper backing plate and a female die plate, which are sequentially arranged from top to bottom, a die handle hole is formed in the top center of the upper die plate, the upper die plate is connected with the punch die through the die handle hole, and the upper die plate, the upper clamping plate, the upper backing plate and the female die plate are connected together through a connecting structure.

[0013] An upper punch is mounted on the upper clamping plate and used for punching an inner circle, the upper punch extends to the bottom of the female die plate through the upper backing plate, and a material stripping structure is arranged on the female die plate.

[0014] As a further description of the above technical solution, the connecting structure comprises bolts which are arranged through the upper die plate, the upper clamping plate and the upper backing plate, the bolts are threadedly connected with the female die plate, and the upper die plate is movably connected with the bolts.

[0015] As a further description of the above technical solution, bolt through holes are formed in the upper die plate, the upper clamping plate and the upper backing plate, and the bolts are arranged through the bolt through holes.

[0016] Threaded holes are formed in the upper clamping plate and the female die plate corresponding to the bolts, and the bolts are threadedly connected with the female die plate through the threaded holes.

[0017] As a further description of the above technical solution, pin holes are formed in the upper clamping plate, the upper backing plate and the female die plate, and pins are arranged in the pin holes, and the upper clamping plate, the upper backing plate and the female die plate are fixedly connected through the pins.

[0018] As a further description of the above technical solution, the material stripping structure comprises an inner stripper which is movably mounted on the female die plate, a square hole is formed in the top of the upper backing plate, an upper striking block is arranged in the square hole, the upper punch penetrates through the upper striking block, elastic rubber columns which are adapted to elastic rubber holes are arranged in the elastic rubber holes which are formed in the front and rear sides of the upper punch on the upper clamping plate, and the elastic rubber columns are connected with the upper striking block.

[0019] As a further description of the above technical solution, recesses are formed in the top of the upper clamping plate and the female die plate, and hanging tables of the upper punch and the inner stripper are arranged in the recesses, respectively.

[0020] As a further description of the above technical solution, guide columns are arranged on the lower die, and guide holes which are adapted to the guide columns are formed in the bottom of the female die plate.

[0021] Compared with the prior art, the upper die has the following advantages:

[0022] The upper punch of the scheme is integrated with the structure for punching the inner circle and the structure for punching the outer circle, the upper punch is punched into the small hole of the lower punch during stamping, the chamfering of the inner and outer circles of the diaphragm can be simultaneously completed in one stamping process, the production process and operation process are reduced, the production cycle is greatly shortened, the production efficiency is significantly improved, the demand of large-scale production is met, the chamfering of the inner and outer circles can be processed based on the same reference under the same mold structure, the size deviation and position deviation caused by multiple clamping and different processing processes in the traditional step-by-step processing are effectively avoided, the size precision and relative position precision of the chamfering of the inner and outer circles of the diaphragm can be accurately ensured, the overall quality and performance of the product are improved, the defective product rate is reduced, and the qualified product rate is improved.

[0023] The recess of the female mold plate is provided with a stripping structure composed of an inner stripper, an elastic glue column and an upper block for stripping the diaphragm, the inner stripper can smoothly strip the diaphragm from the mold after stamping is completed, the continuity of the production process is ensured, and the production efficiency is improved.

[0024] The upper clamping plate, the upper backing plate and the female mold plate are fixedly connected together and stably connected through bolts, and the upper mold plate is movably connected to the bolts, the structure ensures the overall stability of the mold during stamping, the guide structure of the guide column and the guide hole ensures the size precision and quality stability of the processing and chamfering of the inner and outer circles, and the defective product rate of the product is effectively reduced. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a structural schematic view of the utility model;

[0026] Figure 2 It is an explosion view of the upper mold of the utility model;

[0027] Figure 3 It is a structural schematic view of the lower mold of the utility model

[0028] Figure 4 It is a structural schematic view of the female mold plate of the utility model.

[0029] Explanation of reference numerals in the drawing:

[0030] 1, upper mold; 101, upper mold plate; 102, upper clamping plate; 103, upper backing plate; 104, female mold plate; 105, mold handle hole; 106, upper punch;

[0031] 2, lower mold; 21, lower punch; 22, ejector pin;

[0032] 3, bolt; 4, bolt via hole; 5, threaded hole; 6, pin hole; 7, pin; 8, inner stripper; 9, square hole; 10, upper block; 11, elastic glue hole; 12, elastic glue column; 13, recess; 14, guide column; 15, guide hole. DETAILED DESCRIPTION

[0033] 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 of 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. EMBODIMENT

[0034] Please refer to Figures 1-4 A light-shielding ring punching inner and outer ring chamfer clamping plate, comprising an upper die 1 and a lower die 2, the upper die 1 is installed on the punch die, and the lower die 2 is installed on the punch base and corresponds to the upper die 1.

[0035] A lower punch 21 is installed on the lower die 2, and the lower punch 21 is used for punching the outer circle of the light-shielding ring. A small hole is formed in the lower punch 21, and a thimble 22 is arranged in the small hole. The thimble 22 is used for controlling the depth of the chamfer. In the stamping process, the lower punch 21 cooperates with the upper die 1 to punch the outer circle and the inner circle, and at the same time, the thimble 22 performs chamfering operation on the outer circle of the light-shielding ring according to the preset depth.

[0036] As Figure 2 shown, the upper die 1 comprises an upper die plate 101, an upper clamping plate 102, an upper pad plate 103 and a female die plate 104. The upper die plate 101, the upper clamping plate 102, the upper pad plate 103 and the female die plate 104 are sequentially arranged from top to bottom. A die handle hole 105 is formed in the top center of the upper die plate 101. The upper die plate 101 is connected with the punch die through the die handle hole 105. The upper die plate 101, the upper clamping plate 102, the upper pad plate 103 and the female die plate 104 are connected together through a connecting structure. The upper clamping plate 102 is provided with an upper punch 106. The upper punch 106 is used for punching the inner circle. The upper punch 106 extends to the bottom of the female die plate 104 through the upper pad plate 103.

[0037] The lower die 2 is provided with a guide column 14, and the bottom of the female die plate 104 is provided with a guide hole 15 matched with the guide column 14.

[0038] When chamfering the light-shielding ring, the light-shielding ring material to be processed is placed on the lower die 2, and the position of the plate is ensured to be accurate and corresponds to the stamping position of the lower punch 21 and the upper punch 106. Then the punch is started, and the upper die 1 moves downward under the driving of the punch. In the movement process, the upper punch 106 extends into the small hole of the lower punch 21 and punches the inner circle of the light-shielding ring plate; at the same time, the lower punch 21 punches the outer circle of the plate, and the thimble 22 synchronously completes the outer circle chamfering operation in the process of punching the outer circle. The punching of the inner and outer circles and the chamfering of the outer circle can be completed in one stroke. EMBODIMENT

[0039] Based on the above embodiment, the stripper structure is arranged on the master template 104. The stripper structure includes an inner stripper 8 movably mounted on the master template 104, a square hole 9 is opened on the top of the upper backing plate 103, the square hole 9 is provided with an upper block 10, the upper punch 106 penetrates through the upper block 10, the upper clamping plate 102 is provided with an elastic rubber hole 11 on the front and rear sides of the upper punch 106, an elastic rubber column 12 matched with the elastic rubber hole 11 is inserted into the elastic rubber hole 11, and the elastic rubber column 12 is connected with the upper block 10. The top of the upper clamping plate 102 and the master template 104 is provided with a groove 13, and the hanging table of the upper punch 106 and the inner stripper 8 is arranged in the two grooves 13 respectively.

[0040] After stamping, the upper die 1 moves upward. At this time, the elastic rubber column 12 pushes the upper block 10 due to elastic recovery, the upper block 10 drives the inner stripper 8 to separate the stamped shading ring workpiece from the master template 104, and a complete stamping processing cycle is completed.

[0041] Specifically, the connecting structure includes a bolt 3 inserted into the upper die plate 101, the upper clamping plate 102 and the upper backing plate 103, the bolt 3 is threadedly connected with the master template 104, and the upper die plate 101 is movably connected with the bolt 3. The upper die plate 101, the upper clamping plate 102 and the upper backing plate 103 are all provided with a bolt through hole 4, and the bolt 3 is inserted into the bolt through hole 4 of the upper die plate 101, the upper clamping plate 102 and the upper backing plate 103. The master template 104 is provided with a threaded hole 5 corresponding to the bolt 3, and the bolt 3 is threadedly connected with the master template 104 through the threaded hole 5. The upper clamping plate 102, the upper backing plate 103 and the master template 104 are all provided with a pin hole 6, and the pin hole 6 is provided with a pin 7, and the upper clamping plate 102, the upper backing plate 103 and the master template 104 are fixedly connected through the pin 7. The bolt 3 and the pin 7 are both provided with a plurality of ones. This connecting mode not only ensures the firmness of the connection between the clamping plate components, but also enables the upper die plate 101 to move flexibly to a certain extent, meeting the movement requirements of the mold during work.

[0042] Working principle:

[0043] I. Mold installation and debugging: first, accurately install the lower die 2 on the punch base to ensure that its position is fixed and horizontal. Then connect the upper die 1 with the punch die through the die handle hole 105, use the bolt 3 to pass through the bolt through hole 4 of the upper die plate 101, the upper clamping plate 102 and the upper backing plate 103 in turn, and tighten it with the threaded hole 5 of the master template 104, and at the same time, insert the pin 7 into the pin hole 6 of the upper clamping plate 102, the upper backing plate 103 and the master template 104 for positioning. After installation is completed, according to the processing requirements, adjust the protruding length of the ejector pin 22 in the small hole to determine the depth of the outer ring chamfer.

[0044] II. Punching preparation: place the light-shielding ring plate to be processed in the designated position of the lower die 2, ensure the plate position is accurate, and corresponds to the punching position of the lower punch 21 and the upper punch 106.

[0045] III. Punching process: start the punch, the upper die 1 is driven by the punch to move downward along the guide column 14. During the movement, the upper punch 106 punches the inner circle of the light-shielding ring plate, and the lower punch 21 punches the outer circle of the plate at the same time. The ejector pin 22 completes the chamfering operation of the outer ring synchronously during the punching of the outer circle. One punching stroke can complete the punching of the inner and outer rings and the chamfering of the outer ring.

[0046] IV. Material removal process: after the punching is completed, the upper die 1 moves upward. At this time, the elastic rubber column 12 pushes the upper block 10 due to elastic recovery, the upper block 10 drives the inner ejector 8 to remove the punched light-shielding ring workpiece from the female die plate 104, and a complete punching processing cycle is completed.

[0047] The above is only the preferred specific embodiment of the present application; however, the protection scope of the present application is not limited to this. Any person skilled in the art within the technical range disclosed by the present application, according to the technical scheme and improvement concept of the present application, should be covered in the protection scope of the present application.

Claims

1. A chamfered clamp for inner and outer rings used in punching light-shielding rings, characterized in that: Including upper die (1) and lower die (2), the upper die (1) is installed on the punch die, the lower die (2) is installed on the punch base and corresponds to the upper die (1); The lower punch (21) is used for punching the outer circle of the diaphragm, a small hole is formed in the lower punch (21), a ejector pin (22) is arranged in the small hole, and the ejector pin (22) is used for controlling the depth of the chamfer; The upper die (1) comprises an upper die plate (101), an upper clamping plate (102), an upper backing plate (103) and a female die plate (104), the upper die plate (101), the upper clamping plate (102), the upper backing plate (103) and the female die plate (104) are sequentially arranged from top to bottom, a die handle hole (105) is formed in the top center of the upper die plate (101), the upper die plate (101) is connected with the punch die through the die handle hole (105), and the upper die plate (101), the upper clamping plate (102), the upper backing plate (103) and the female die plate (104) are connected together through a connecting structure. The upper clamping plate (102) is provided with an upper punch (106), and the upper punch (106) is used for punching the inner circle; the upper punch (106) extends to the bottom of the female die plate (104) through the upper backing plate (103); and the female die plate (104) is provided with a stripping structure.

2. The chamfering jig for inner and outer rings of an aperture of a sun shade according to claim 1, wherein: The connecting structure comprises a bolt (3) penetratingly arranged in the upper die plate (101), the upper clamping plate (102) and the upper backing plate (103), the bolt (3) is threadedly connected with the female die plate (104), and the upper die plate (101) is movably connected with the bolt (3).

3. The chamfering jig for inner and outer rings of an aperture of a diaphragm according to claim 2, wherein: Screw through holes (4) are formed in the upper die plate (101), the upper clamping plate (102) and the upper backing plate (103), and the bolt (3) is penetratingly arranged in the screw through holes (4) of the upper die plate (101), the upper clamping plate (102) and the upper backing plate (103). Threaded holes (5) are formed in the female die plate (104) corresponding to the bolt (3), and the bolt (3) is threadedly connected with the female die plate (104) through the threaded holes (5).

4. The chamfering jig for inner and outer rings of an aperture of a diaphragm according to claim 2, wherein: Pin holes (6) are formed in the upper clamping plate (102), the upper backing plate (103) and the female die plate (104), and pins (7) are arranged in the pin holes (6), and the upper clamping plate (102), the upper backing plate (103) and the female die plate (104) are fixedly connected through the pins (7).

5. The chamfering jig for inner and outer rings of an aperture of a sun gear according to claim 1, wherein: The stripping structure comprises an inner stripper (8) movably arranged on the female die plate (104), square holes (9) are formed in the top of the upper backing plate (103), upper knockers (10) are arranged in the square holes (9), the upper punch (106) penetrates through the upper knockers (10), elastic rubber columns (12) which are matched with the elastic rubber holes (11) are penetratingly arranged in the elastic rubber holes (11) which are formed in the upper clamping plate (102) and located on the front and back sides of the upper punch (106), and the elastic rubber columns (12) are connected with the upper knockers (10).

6. The chamfering jig for inner and outer rings of an aperture of a sun gear according to claim 5, wherein: Recesses (13) are formed in the top of the upper clamping plate (102) and the female die plate (104), and hanging tables of the upper punch (106) and the inner stripper (8) are arranged in the two recesses (13) respectively.

7. The chamfering jig for inner and outer rings of an aperture of a sun gear according to claim 1, wherein: The lower mold (2) is provided with a guide column (14), and the bottom of the female mold plate (104) is provided with a guide hole (15) corresponding to the guide column (14).

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