Batch forming device for precise metal parts
By using intermittent movement of the tape and the coordination of multiple sets of upper punches and lower mold seats in the batch forming device of precision metal parts, combined with the design of push rods and guide pins, the problem of difficult to efficiently process three-dimensional structural precision parts in the prior art is solved, and high-efficiency and high-precision forming processing is achieved.
Patent Information
- Application Number
- CN202411549326.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2022-04-20
- Publication Date
- 2025-02-25
AI Technical Summary
The prior art is difficult to efficiently process precision parts with three-dimensional structural characteristics and small sizes. Especially while ensuring high precision and high efficiency, there are problems such as inability to open the forging and pressing and low yield and high cost.
A batch forming device for precision metal parts is adopted, the device includes a lower substrate and an upper substrate mounted on the base, and a feeding mechanism with a tape mounted thereon. Through intermittent movement of the tape and the cooperation of multiple sets of upper punches with lower die seats with inserts, the tape is continuously extruded on multiple stations, and combined with the design of push rods and guide pins, the tape is accurately positioned and pre-pressed to ensure molding accuracy.
High efficiency and high precision processing of precision parts with three-dimensional structural characteristics and small sizes is achieved, the production efficiency of cold forged products is improved, the problems of tape offset and inconsistent molding position are avoided, and the accuracy of multi-stage molding is ensured.
Smart Images
Figure CN119500857A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to a batch forming device for precision metal parts, belonging to the technical field of precision machining. Background Art
[0002] The cold forging process is based on the principle of metal plastic deformation. Under the action of a certain speed and high pressure given by a suitable mold, the metal blank undergoes plastic flow deformation in the mold cavity, thereby obtaining the required shape, size and parts with certain mechanical properties. Its advantages are good product organization and performance, high material utilization, but relatively low efficiency. The progressive die is composed of multiple stations, each station is linked in sequence to complete different processing, and a series of different stamping processes are completed in one stroke of the punch press. After one stroke is completed, multiple processes can be completed on a pair of molds, generally punching, blanking, bending, trimming, stretching, etc., with the characteristics of high precision and high efficiency. However, the main feature of its products is that they are mainly sheet-shaped and cannot be used for processing products with 3D features.
[0003] For products with small size, high precision and complex three-dimensional structural features, forging and pressing cannot be used to open the mold because the size is too small. However, using CNC technology will encounter problems such as low yield, thin side walls that are easy to deform, and high unit product processing costs. Summary of the invention
[0004] The purpose of the present invention is to provide a batch forming device for precision metal parts, which can realize the efficient processing of precision parts with three-dimensional structural characteristics and small size, and can also ensure the accuracy of multi-stage forming processing of parts.
[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a batch molding device for precision metal parts, used for precision parts processing, comprising: a lower base plate installed on the upper surface of a base, an upper base plate installed on the lower surface of a top plate, and a feeding mechanism with a material belt installed; The precision part further includes a body and a hollow cylindrical portion formed in the center of the lower part of the body, the wall thickness of the hollow cylindrical portion close to one end of the body is greater than the wall thickness of the other end, the thickness of the body and the thickness of the material belt are 1:4, the feeding mechanism is located outside the feeding end of the lower substrate and the upper substrate, one end of the material belt is installed on the feeding mechanism, and the other end of the material belt intermittently moves from the feeding end of the lower substrate and the upper substrate to the discharging end thereof, and a leveling mechanism is arranged between the feeding mechanism and the feeding end, and the material belt passes through the leveling mechanism; A movable plate is arranged below the upper base plate, and the movable plate arranged parallel to the upper base plate can move in the vertical direction so that the upper surface of the movable plate is in contact with or away from the lower surface of the upper base plate, and a plurality of push rods are arranged between the upper base plate and the movable plate, and the upper ends of the push rods which can move in the vertical direction are embedded in the second mounting holes on the upper base plate and connected to a second elastic member arranged vertically, and the lower ends of the push rods are in compression contact with the upper surface of the movable plate; The upper base plate is provided with a plurality of upper punches arranged at intervals along the advancing direction of the material belt. When the movable plate is away from the upper base plate, the lower end of the upper punch arranged vertically is immersed in the movable plate. When the movable plate is attached to the upper base plate, the second elastic member is in an extrusion state and the lower end of the upper punch passes through the movable plate and is in extrusion contact with the upper surface of the material belt. The upper surface of the lower base plate is embedded with a plurality of lower die seats corresponding to the upper punches. A vertically arranged insert hole is provided on the upper surface of each lower die seat and is located directly below the upper punch. The lower end of an insert is embedded in the lower part of the insert hole. A forming gap is formed between the upper end of the insert and the inner wall of the upper end of the insert hole, into which the lower part of the material belt is squeezed. The upper surface of the lower substrate is provided with a plurality of guide holes on both sides of the material strip, the lower end of a guide pin which can move up and down is embedded in the guide hole and is connected to a first elastic member, the upper end of the guide pin extends upward from the upper surface of the lower substrate and is provided with a groove in which the edge of the material strip is embedded, when the first elastic member is in a naturally relaxed state, the material strip whose edge is embedded in the groove on the guide pin is spaced apart from the upper surface of the lower substrate.
[0006] The further improved scheme in the above technical scheme is as follows: 1. In the above solution, the thickness of the body is 2 mm, and the thickness of the material strip is 8 mm.
[0007] 2. In the above scheme, two punching punches are installed on the upper base plate and located on the rear side of the upper punch. The two punching punches are arranged perpendicularly to the forward direction of the material strip and are located above the two edges of the material strip, respectively, and are used to punch two positioning holes on the material strip. A number of punching dies corresponding to the punching punches are embedded and installed on the upper surface of the lower base plate. The upper ends of a number of positioning pins used to be embedded in the positioning holes on the material strip are respectively installed on the upper base plate, and a number of positioning pins that cooperate with the positioning holes on the same side of the material strip are arranged at equal intervals along the forward direction of the material strip.
[0008] 3. In the above solution, the lower end surface of the positioning pin is lower than the lower end surfaces of the upper punch and the punching punch.
[0009] 4. In the above scheme, the leveling mechanism includes a plurality of upper rollers arranged along the forward direction of the material belt and a plurality of lower rollers arranged along the forward direction of the material belt.
[0010] 5. In the above scheme, the upper roller and the lower roller are arranged correspondingly.
[0011] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: 1. The progressive die precision cold forging processing device of the present invention combines the advantages of two processes, performs precision cold forging through a progressive die, thereby improving the production efficiency of cold forged products, and performs continuous extrusion molding of the material strip at multiple stations through the intermittent movement of the material strip and the cooperation of multiple groups of upper punches with a lower die seat with an insert, and realizes high-efficiency and high-precision processing of precision parts with three-dimensional structural characteristics and small size through the gradual flow and plastic deformation of the material of the material strip; further, a plurality of push rods movable in the vertical direction are arranged between the upper base plate and the movable plate, the upper end of the push rod is embedded in the second mounting hole on the upper base plate and connected to a vertically arranged second elastic member, the lower end of the push rod is in compression contact with the upper surface of the movable plate, and the upper punch can be protected by the telescopic movement of the upper punch relative to the movable plate through the action of the second elastic member, and the material strip can be pre-pressed on the entire surface through the movable plate to avoid the deviation of the material strip, thereby further improving the precision of forging and pressing the material strip.
[0012] 2. The progressive die precision cold forging processing device of the present invention has a plurality of guide holes on the upper surface of the lower substrate and on both sides of the material strip, the lower end of a guide pin is embedded in the guide hole, the upper end of the guide pin extends upward from the upper surface of the lower substrate and has a groove in which the edge of the material strip is embedded, thereby improving the position accuracy of the material strip during movement, avoiding the inconsistent forming position caused by the deviation of the material strip during movement between multiple forming stations, and ensuring the accuracy of multi-stage forming processing of parts; further, the lower end of the guide pin that can move up and down is embedded in the guide hole and connected to an elastic member, when the elastic member is in a naturally relaxed state, the material strip with the edge embedded in the groove on the guide pin is spaced from the upper surface of the lower substrate, and the material strip can be lifted by resetting the elastic member after each forming operation is completed, thereby avoiding the material strip being partially retained in the forming gap and unable to move to the next station, thereby further ensuring the processing accuracy and efficiency.
[0013] 3. The progressive die precision cold forging processing device of the present invention has a plurality of punching dies corresponding to the punching convex dies embedded and installed on the upper surface of the lower base plate, and the upper ends of a plurality of positioning pins for embedding in the positioning holes on the material strip are respectively installed on the upper base plate, and a plurality of positioning pins matched with the positioning holes on the same side of the material strip are arranged at equal intervals along the forward direction of the material strip. Through the matching of the positioning pins with the positioning holes on the material strip, the consistency of the forward distance of the material strip each time can be ensured, and the material strip can be positioned at each work station before the forming process, so as to prevent the material strip from being offset due to force during the forming process, thereby further improving the processing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Attached Figure 1 It is a schematic diagram of the overall structure of the batch forming device for precision metal parts of the present invention; Attached Figure 2 It is a schematic diagram of the overall structure of the precision parts used for processing of the present invention; Attached Figure 3 It is a transverse cross-sectional perspective view of a batch forming device for precision metal parts of the present invention; Attached Figure 4 It is a longitudinal sectional front view of a batch forming device for precision metal parts of the present invention; Attached Figure 5 The present invention is attached Figure 4 A magnified image of point A; Attached Figure 6 It is a front view of a partial structural section of a batch forming device for precision metal parts of the present invention.
[0015] In the above drawings: 1. base; 2. lower substrate; 3. top plate; 301. third mounting hole; 4. upper substrate; 401. first upper substrate layer; 402. second upper substrate layer; 403. second mounting hole; 5. material strip; 501. positioning hole; 6. upper punch; 7. lower die seat; 8. inlay hole; 9. inlay; 10. forming gap; 11. guide pin; 12. groove; 13. guide hole; 14. first elastic member; 15. second elastic member; 161. punching punch; 162. punching die; 17. positioning pin; 18. movable plate; 19. push rod; 20. precision parts; 201. main body; 202. hollow cylindrical part; 21. feeding mechanism; 22. leveling mechanism; 221. upper roller; 222. lower roller; 231. guide column; 232. guide sleeve. DETAILED DESCRIPTION
[0016] The present invention can be further understood through the specific embodiments given below, but they are not intended to limit the present invention.
[0017] Embodiment 1: A batch molding device for precision metal parts, used for processing precision parts 20, comprising: a lower base plate 2 mounted on the upper surface of a base 1, an upper base plate 4 mounted on the lower surface of a top plate 3, and a feeding mechanism 21 with a material belt 5 installed; The precision part 20 further includes a body 201 and a hollow cylindrical portion 202 formed in the center of the lower part of the body 201. The wall thickness of the hollow cylindrical portion 202 close to one end of the body 201 is greater than the wall thickness of the other end. The feeding mechanism 21 is located outside the feeding end of the lower substrate 2 and the upper substrate 4. One end of the material belt 5 is installed on the feeding mechanism 21. The other end of the material belt 5 moves intermittently from the feeding end of the lower substrate 2 and the upper substrate 4 to the discharging end thereof. A leveling mechanism 22 is provided between the feeding mechanism 21 and the feeding end, and the material belt 5 passes through the leveling mechanism 22. A movable plate 18 is arranged below the upper base plate 4. The movable plate 18 arranged parallel to the upper base plate 4 can move in the vertical direction so that the upper surface of the movable plate 18 is in contact with or away from the lower surface of the upper base plate 4. A plurality of push rods 19 are arranged between the upper base plate 4 and the movable plate 18. The upper ends of the push rods 19 that can move in the vertical direction are embedded in the second mounting holes 403 on the upper base plate 4 and connected to a second elastic member 15 arranged vertically. The lower ends of the push rods 19 are in compression contact with the upper surface of the movable plate 18. The upper substrate 4 is provided with a plurality of upper punches 6 arranged at intervals along the advancing direction of the material belt 5. When the movable plate 18 is away from the upper substrate 4, the lower end of the vertically arranged upper punch 6 is immersed in the movable plate 18. When the movable plate 18 is attached to the upper substrate 4, the second elastic member 15 is in an extrusion state and the lower end of the upper punch 6 passes through the movable plate 18 and is in extrusion contact with the upper surface of the material belt 5. The upper surface of the lower substrate 2 is embedded with a plurality of lower die seats 7 corresponding to the upper punches 6. A vertically arranged insert hole 8 is provided on the upper surface of each lower die seat 7 and is located directly below the upper punch 6. The lower end of an insert 9 is embedded in the lower part of the insert hole 8. A molding gap 10 for squeezing the lower part of the material belt 5 is formed between the upper end of the insert 9 and the inner wall of the upper end of the insert hole 8. A plurality of guide holes 13 are provided on the upper surface of the lower substrate 2 and on both sides of the material strip 5. The lower end of a guide pin 11 which can move up and down is embedded in the guide hole 13 and connected to a first elastic member 14. The upper end of the guide pin 11 extends upward from the upper surface of the lower substrate 2 and has a groove 12 in which the edge of the material strip 5 is embedded. When the first elastic member 14 is in a naturally relaxed state, the material strip 5 whose edge is embedded in the groove 12 on the guide pin 11 is spaced apart from the upper surface of the lower substrate 2.
[0018] Two punching dies 161 are installed on the upper substrate 4 and at the rear side of the upper punch 6. The two punching dies 161 are arranged perpendicular to the forward direction of the material strip 5 and are respectively located above the two edges of the material strip 5, and are used to punch two positioning holes 501 on the material strip 5. A plurality of punching dies 162 corresponding to the punching dies 161 are embedded and installed on the upper surface of the lower substrate 2. The upper ends of a plurality of positioning pins 17 used to be embedded in the positioning holes 501 on the material strip 5 are respectively installed on the upper substrate 4. A plurality of positioning pins 17 matching the positioning holes 501 on the same side of the material strip 5 are arranged at equal intervals along the forward direction of the material strip 5. The leveling mechanism 22 includes a plurality of upper rollers 221 arranged along the forward direction of the material belt 5 and a plurality of lower rollers 222 arranged along the forward direction of the material belt 5 .
[0019] The upper roller 221 and the lower roller 222 are disposed correspondingly.
[0020] The guide pins 11 located on the same side of the material strip 5 are arranged at equal intervals.
[0021] The guide pin 11 is located between two adjacent lower die seats 7 .
[0022] The base 1 and the top plate 3 that can move up and down are connected by a plurality of groups of guide posts 231 and guide sleeves 232 .
[0023] A downwardly extending guide sleeve 232 is installed at each of the four corners of the top plate 3 , and a guide column 231 cooperating with the guide sleeve 232 is installed at each of the four corners of the upper surface of the base 1 , and the upper end of each guide column 231 is embedded in the corresponding guide sleeve 232 .
[0024] Embodiment 2: A batch molding device for precision metal parts, used for processing precision parts 20, comprising: a lower base plate 2 mounted on the upper surface of a base 1, an upper base plate 4 mounted on the lower surface of a top plate 3, and a feeding mechanism 21 with a material belt 5 installed; The precision part 20 further includes a body 201 and a hollow cylindrical portion 202 formed in the center of the lower part of the body 201. The wall thickness of the hollow cylindrical portion 202 close to one end of the body 201 is greater than the wall thickness of the other end. The feeding mechanism 21 is located outside the feeding end of the lower substrate 2 and the upper substrate 4. One end of the material belt 5 is installed on the feeding mechanism 21. The other end of the material belt 5 moves intermittently from the feeding end of the lower substrate 2 and the upper substrate 4 to the discharging end thereof. A leveling mechanism 22 is provided between the feeding mechanism 21 and the feeding end, and the material belt 5 passes through the leveling mechanism 22. A movable plate 18 is arranged below the upper base plate 4. The movable plate 18 arranged parallel to the upper base plate 4 can move in the vertical direction so that the upper surface of the movable plate 18 is in contact with or away from the lower surface of the upper base plate 4. A plurality of push rods 19 are arranged between the upper base plate 4 and the movable plate 18. The upper ends of the push rods 19 that can move in the vertical direction are embedded in the second mounting holes 403 on the upper base plate 4 and connected to a second elastic member 15 arranged vertically. The lower ends of the push rods 19 are in compression contact with the upper surface of the movable plate 18. The upper substrate 4 is provided with a plurality of upper punches 6 arranged at intervals along the advancing direction of the material belt 5. When the movable plate 18 is away from the upper substrate 4, the lower end of the vertically arranged upper punch 6 is immersed in the movable plate 18. When the movable plate 18 is attached to the upper substrate 4, the second elastic member 15 is in an extrusion state and the lower end of the upper punch 6 passes through the movable plate 18 and is in extrusion contact with the upper surface of the material belt 5. The upper surface of the lower substrate 2 is embedded with a plurality of lower die seats 7 corresponding to the upper punches 6. A vertically arranged insert hole 8 is provided on the upper surface of each lower die seat 7 and is located directly below the upper punch 6. The lower end of an insert 9 is embedded in the lower part of the insert hole 8. A molding gap 10 for squeezing the lower part of the material belt 5 is formed between the upper end of the insert 9 and the inner wall of the upper end of the insert hole 8. A plurality of guide holes 13 are provided on the upper surface of the lower substrate 2 and on both sides of the material strip 5. The lower end of a guide pin 11 which can move up and down is embedded in the guide hole 13 and connected to a first elastic member 14. The upper end of the guide pin 11 extends upward from the upper surface of the lower substrate 2 and has a groove 12 in which the edge of the material strip 5 is embedded. When the first elastic member 14 is in a naturally relaxed state, the material strip 5 whose edge is embedded in the groove 12 on the guide pin 11 is spaced apart from the upper surface of the lower substrate 2.
[0025] Two punching dies 161 are installed on the upper substrate 4 and at the rear side of the upper punch 6. The two punching dies 161 are arranged perpendicular to the forward direction of the material strip 5 and are respectively located above the two edges of the material strip 5, and are used to punch two positioning holes 501 on the material strip 5. A plurality of punching dies 162 corresponding to the punching dies 161 are embedded and installed on the upper surface of the lower substrate 2. The upper ends of a plurality of positioning pins 17 used to be embedded in the positioning holes 501 on the material strip 5 are respectively installed on the upper substrate 4. A plurality of positioning pins 17 matching the positioning holes 501 on the same side of the material strip 5 are arranged at equal intervals along the forward direction of the material strip 5. The lower end surface of the positioning pin 17 is lower than the lower end surfaces of the upper punch 6 and the punching punch 161 .
[0026] The leveling mechanism 22 includes a plurality of upper rollers 221 arranged along the forward direction of the material belt 5 and a plurality of lower rollers 222 arranged along the forward direction of the material belt 5 .
[0027] The upper substrate 4 further comprises a first upper substrate layer 401 and a second upper substrate layer 402 stacked one above the other. The second upper substrate layer 402 at the lower layer is provided with a mounting through hole for the upper end of the upper punch 6 to be embedded.
[0028] The first upper substrate layer 401 and the second upper substrate layer 402 are connected by bolts.
[0029] The top plate 3 is provided with a plurality of third mounting holes 301 communicating with the second mounting holes 403 , and the upper end of the second elastic member 15 , whose lower end is connected to the push rod 19 in the second mounting hole 403 , is embedded in the third mounting hole 301 .
[0030] The ratio of the thickness of the main body 201 to the thickness of the material strip 5 is 1:4.
[0031] The thickness of the main body 201 is 2 mm, and the thickness of the material strip 5 is 8 mm.
[0032] The further explanation of the above embodiment is as follows: This patented technical solution is mainly derived from the development process of one of the explosion-proof battery components - the pole, as shown in the attached Figure 2As shown, the maximum outline size of the product processed by this patent is only 4.40mm×3.20mm×1.65mm, with two-level 3D features. The raw material is AL3003, which has good plasticity and is conducive to 3D feature forming; Based on the characteristics of small size, high precision and complex features of the product, the initial evaluation of its production process is forging or CNC. However, due to its small size, forging cannot open the mold. After adopting the CNC process, it encountered problems such as low yield, thin sidewalls that are easy to deform, and high single PCS costs, and the project came to a standstill. For the above-mentioned products with high precision, small size and complex structural features, a multi-step continuous die forging production method is proposed. If progressive die cold forging is to be achieved, the key point is to accurately control the material flow and reduce the forming force; this patent mainly focuses on the metal filling capacity and forming capacity in progressive die cold forging; For a single product, the molding process is designed. The geometric model is processed first, and a multi-step molding process is adopted. That is, each step of the gradual process is derived from the plastic forming theory. The geometric solid model is constructed using the UG software. The feasibility of its molding is analyzed using the finite element software Deform-3D, and then the finite element software Deform-3D is used to analyze and verify its process. The material is 0.8mm AL3003 coil. The material is stored in the thickness direction in both forming one and forming two. In forming three, the material thickness is cut to 0.2mm of the final product. The inner and outer R angles are gradually formed from large to small. These two countermeasures can minimize the phenomenon of incomplete forming of the product's 3D features. Considering that the product size is too small, there is a risk that the product may break in the mold cavity during demoulding. Therefore, the draft angle of 1~3° is increased on the inner and outer walls of Forming 1 and Forming 2 respectively to facilitate demoulding; According to the above analysis of single process forming, the result has the feasibility of forming, so the single forging forming process is introduced into the continuous die belt.
[0033] When the batch forming device of the precision metal parts is used, the working principle is as follows: when working, the feeding mechanism is started, the material strip is placed at the feeding end, the edge of the material strip is embedded in the groove of the guide pin and moves from the feeding end to the net discharge end, and when the material strip moves to the bottom of the punching punch, the punching punch cooperates with the punching die to form positioning holes at both ends of the edge of the material strip; During the bonding process between the movable plate and the upper substrate, the positioning pins can cooperate with the positioning holes to position the strip and prevent the strip from shifting. When the movable plate is fitted with the upper base plate, the upper punch cooperates with the lower die base to squeeze the corresponding area of the material strip into the molding gap. During the movement, continuous extrusion at multiple stations causes the strip material to gradually flow and shape and deform to obtain a preliminary molded product.
[0034] The lower end of the vertically arranged upper punch is exposed from the lower surface of the upper base plate and is used for extrusion contact with the upper surface of the material strip. A plurality of lower die seats corresponding to the upper punch are embedded and installed on the upper surface of the lower base plate. A vertically arranged insert hole is provided on the upper surface of each lower die seat and is located directly below the upper punch. The lower end of an insert is embedded in the lower part of the insert hole. A forming gap is formed between the upper end of the insert and the inner wall of the upper end of the insert hole for the lower part of the material strip to be squeezed into. Through the intermittent movement of the material strip and the cooperation of multiple groups of upper punches and the lower die seat with inserts, the material strip is continuously extruded and formed at multiple stations. Through the gradual flow and plastic deformation of the material strip, high-efficiency and high-precision processing of precision parts with three-dimensional structural characteristics and small size is achieved. In addition, a plurality of push rods are arranged between the upper base plate and the movable plate, the upper ends of the push rods movable in the vertical direction are embedded in the second mounting holes on the upper base plate and connected to a second elastic member arranged vertically, the lower ends of the push rods are in extrusion contact with the upper surface of the movable plate, and the movable plate can move up and down under the action of the second elastic member, so that the upper punch can be protected by the telescopic movement of the upper punch relative to the movable plate, and the entire surface of the material strip can be pre-pressed by the movable plate to avoid the deviation of the material strip, thereby further improving the accuracy of forging and forming the material strip; In addition, a plurality of guide holes are provided on the upper surface of the lower substrate and on both sides of the material belt, the lower end of a guide pin is embedded in the guide hole, and the upper end of the guide pin extends upward from the upper surface of the lower substrate and is provided with a groove into which the edge of the material belt is embedded, thereby improving the position accuracy of the material belt during movement, avoiding the situation in which the molding position is inconsistent due to the deviation of the material belt during movement between multiple molding stations, and ensuring the accuracy of multi-stage molding processing of parts; Furthermore, the lower end of the guide pin that can move up and down is embedded in the guide hole and connected to an elastic member. When the elastic member is in a naturally relaxed state, the edge of the material strip embedded in the groove on the guide pin is spaced apart from the upper surface of the lower substrate. The material strip can be lifted by resetting the elastic member after each molding operation is completed, so as to avoid the material strip being partially retained in the molding gap and unable to move to the next station, thereby further ensuring the processing accuracy and efficiency. Furthermore, two punching punches are arranged at intervals perpendicular to the forward direction of the material strip, respectively, and are located above the two edges of the material strip, for punching out two positioning holes on the material strip. A number of punching dies corresponding to the punching punches are embedded in the upper surface of the lower substrate, and the upper ends of a number of positioning pins for embedding in the positioning holes on the material strip are respectively installed on the upper substrate. A number of positioning pins that cooperate with the positioning holes on the same side of the material strip are arranged at equal intervals along the forward direction of the material strip. Through the cooperation between the positioning pins and the positioning holes on the material strip, the consistency of the forward distance of the material strip each time can be ensured, and the material strip can be positioned at each workstation before the molding process, to prevent the material strip from being offset due to force during the molding process, thereby further improving the processing accuracy.
[0035] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.
Claims
1. A batch molding device for precision metal parts, used for processing precision parts (20), comprising: A lower substrate (2) mounted on the upper surface of a base (1), an upper substrate (4) mounted on the lower surface of a top plate (3), and a feeding mechanism (21) mounted with a material belt (5), characterized in that: the precision part (20) further comprises a body (201) and a hollow cylindrical portion (202) formed at the center of the lower portion of the body (201), the wall thickness of the hollow cylindrical portion (202) close to one end of the body (201) is greater than the wall thickness of the other end, and the thickness of the body (201) is greater than the thickness of the The ratio of the thickness of the material belt (5) to the thickness of the material belt (5) is 1:4, the feeding mechanism (21) is located outside the feeding ends of the lower substrate (2) and the upper substrate (4), one end of the material belt (5) is mounted on the feeding mechanism (21), and the other end of the material belt (5) intermittently moves from the feeding ends of the lower substrate (2) and the upper substrate (4) to their discharging ends, and a leveling mechanism (22) is provided between the feeding mechanism (21) and the feeding ends, and the material belt (5) passes through the leveling mechanism (22); A movable plate (18) is arranged below the upper base plate (4); the movable plate (18) arranged parallel to the upper base plate (4) can move in a vertical direction so that the upper surface of the movable plate (18) is in contact with or away from the lower surface of the upper base plate (4); a plurality of push rods (19) are arranged between the upper base plate (4) and the movable plate (18); the upper ends of the push rods (19) that can move in the vertical direction are embedded in second mounting holes (403) on the upper base plate (4) and are connected to a second elastic member (15) arranged vertically; and the lower ends of the push rods (19) are in compression contact with the upper surface of the movable plate (18); The upper substrate (4) is provided with a plurality of upper punches (6) arranged at intervals along the advancing direction of the material strip (5); when the movable plate (18) is away from the upper substrate (4), the lower end of the vertically arranged upper punch (6) is immersed in the movable plate (18); when the movable plate (18) is in contact with the upper substrate (4), the second elastic member (15) is in an extrusion state and the lower end of the upper punch (6) passes through the movable plate (18) and is in extrusion contact with the upper surface of the material strip (5); the upper surface of the lower substrate (2) is embedded with a plurality of lower die seats (7) corresponding to the upper punches (6); a vertically arranged insert hole (8) is provided on the upper surface of each lower die seat (7) and is located directly below the upper punch (6); the lower end of an insert (9) is embedded in the lower part of the insert hole (8); a forming gap (10) is formed between the upper end of the insert (9) and the inner wall of the upper end of the insert hole (8) into which the lower part of the material strip (5) is squeezed; A plurality of guide holes (13) are provided on the upper surface of the lower substrate (2) and on both sides of the material strip (5); the lower end of a guide pin (11) which can move up and down is embedded in the guide hole (13) and connected to a first elastic member (14); the upper end of the guide pin (11) extends upward from the upper surface of the lower substrate (2) and is provided with a groove (12) in which the edge of the material strip (5) is embedded; when the first elastic member (14) is in a naturally relaxed state, the material strip (5) whose edge is embedded in the groove (12) on the guide pin (11) is spaced apart from the upper surface of the lower substrate (2).
2. The batch forming device for precision metal parts according to claim 1 is characterized in that: The thickness of the main body (201) is 2 mm, and the thickness of the material strip (5) is 8 mm.
3. The batch forming device for precision metal parts according to claim 1, characterized in that: Two punching dies (161) are installed on the upper substrate (4) and located at the rear side of the upper punch (6). The two punching dies (161) are arranged perpendicular to the forward direction of the material strip (5) and are respectively located above the two edges of the material strip (5) for punching two positioning holes (501) on the material strip (5). A plurality of punching dies (162) corresponding to the punching dies (161) are embedded and installed on the upper surface of the lower substrate (2). The upper ends of a plurality of positioning pins (17) for embedding in the positioning holes (501) on the material strip (5) are respectively installed on the upper substrate (4). A plurality of positioning pins (17) matching the positioning holes (501) on the same side of the material strip (5) are arranged at equal intervals along the forward direction of the material strip (5).
4. The batch forming device for precision metal parts according to claim 3 is characterized in that: The lower end surface of the positioning pin (17) is lower than the lower end surfaces of the upper punch (6) and the punching punch (161).
5. The batch forming device for precision metal parts according to claim 1 or 3, characterized in that: The leveling mechanism (22) comprises a plurality of upper rollers (221) arranged along the forward direction of the material belt (5) and a plurality of lower rollers (222) arranged along the forward direction of the material belt (5).
6. The batch forming device for precision metal parts according to claim 5, characterized in that: The upper roller (221) and the lower roller (222) are arranged correspondingly.