Continuous machining device for precision parts

Abstract

The continuous machining device is characterized in that a vertically-arranged insert hole is formed in the position, located under an upper punch, of the upper surface of each lower die base, and a forming gap allowing the lower portion of a material belt to be squeezed in is formed between the upper end of an insert and the inner wall of the upper end of each insert hole; a plurality of guide holes are formed in the upper surface of the lower base plate and located on the two sides of the material belt, the lower end of a guide pin capable of moving up and down is embedded into the guide holes and connected with a first elastic piece, and the upper end of the guide pin extends upwards from the upper surface of the lower base plate and is provided with a groove allowing the edge of the material belt to be embedded. The grooves are annular grooves extending in the circumferential direction of the guide pins, and when the first elastic pieces are in a natural relaxation state, the material belt with the edge embedded into the grooves in the guide pins and the upper surface of the lower base plate are arranged in a spaced mode. According to the invention, high-efficiency and high-precision machining of precise parts with three-dimensional structural characteristics and small sizes can be realized.

Description

Technical Field

[0001] The invention relates to a continuous processing device for precision parts, belonging to the technical field of electronic products. 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., but 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 object of the present invention is to provide a continuous processing device for precision parts, which can realize high-efficiency and high-precision processing of precision parts with three-dimensional structural characteristics and small size.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a continuous processing device for precision 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 thereof, 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; The upper base plate is provided with a plurality of upper punches arranged at intervals along the advancing direction of the material strip, the lower ends of the vertically arranged upper punches are exposed from the lower surface of the upper base plate and are used for extrusion contact with the upper surface of the material strip, the upper surface of the lower base plate is embedded with a plurality of lower die seats corresponding to the upper punches, the upper surface of each lower die seat is provided with a vertically arranged insert hole located directly below the upper punch, the lower end of an insert is embedded in the lower part of the insert hole, and 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; A plurality of guide holes are provided on the upper surface of the lower substrate and on both sides of the material strip. The lower end of a guide pin that can move up and down is embedded in the guide hole and 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. The groove is an annular groove extending along the circumference of the guide pin. When the first elastic member is in a naturally relaxed state, the material strip with the edge embedded in the groove on the guide pin is spaced apart from the upper surface of the lower substrate. 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.

[0006] The further improved scheme in the above technical scheme is as follows: 1. In the above scheme, a movable plate is arranged below the upper base plate, and the movable plate arranged parallel to the upper base plate can be moved in a 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 movable in the vertical direction are embedded in the second mounting holes on the upper base plate and connected to a vertically arranged second elastic member, and the lower ends of the push rods are in compression contact with the upper surface of the movable plate, and when the movable plate is away from the upper base plate, the lower end of the vertically arranged upper punch is immersed in the movable plate, and when the movable plate is in contact with 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 compression contact with the upper surface of the material strip.

[0007] 2. In the above solution, the ratio of the thickness of the body to the thickness of the material strip is 1:4.

[0008] 3. In the above solution, a limit block is detachably installed on the top of the third mounting hole that passes through from top to bottom.

[0009] 4. In the above solution, the limit block is connected to the third mounting hole through threads.

[0010] 5. 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.

[0011] 6. In the above solution, the upper surface of the lower substrate is provided with a avoidance hole corresponding to the positioning pin.

[0012] 7. In the above solution, the first elastic member is a spring.

[0013] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: 1. The continuous processing device for precision parts of the present invention combines the advantages of two processes, performs precision cold forging through progressive dies, thereby improving the production efficiency of cold forged products, and performs continuous extrusion molding on the material strip at multiple stations through the intermittent movement of the material strip and the cooperation of multiple sets of upper punches and a lower die seat with inserts. After 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; further, a plurality of guide holes are opened on the upper surface of the lower substrate and located on both sides of the material strip, and 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 opened with a feeding hole The groove embedded in the edge of the belt improves the positioning accuracy of the material belt during movement, avoids the inconsistent molding position caused by the deviation of the material belt during movement between multiple molding stations, and ensures the accuracy of multi-stage molding processing of parts; in addition, 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 belt with the edge embedded in the groove on the guide pin is spaced apart from the upper surface of the lower substrate. After each molding operation is completed, the material belt can be lifted by resetting the elastic member to avoid the material belt being partially retained in the molding gap and unable to move to the next station, thereby further ensuring the processing accuracy and efficiency.

[0014] 2. The continuous processing device of precision parts of the present invention has a plurality of punching dies corresponding to the punching convex dies embedded on the upper surface of the lower substrate, 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 substrate, 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 station before the molding process, so as to prevent the material strip from being offset by force during the molding process, and further The processing accuracy is improved; further, a plurality of push rods movable in the vertical direction are arranged between the upper base plate and the movable plate, the upper ends of the push rods are embedded in the second mounting holes on the upper base plate and connected to a vertically arranged second elastic member, and the lower ends of the push rods are in extrusion contact with the upper surface of the movable plate. Through the up and down movement of the movable plate under the action of the second elastic member, 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 forging accuracy of the material strip. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Attached Figure 1 It is a schematic diagram of the structure of the precision parts used for processing of the present invention; Attached Figure 2 It is a schematic diagram of the overall structure of the continuous processing device for precision parts of the present invention; Attached Figure 3 It is a longitudinal sectional front view of the continuous processing device for precision parts of the present invention; Attached Figure 4 The present invention is attached Figure 3 A magnified image of point A; Attached Figure 5 It is a transverse sectional front view of the continuous processing device for precision parts of the present invention; Attached Figure 6 The present invention is attached Figure 5 The enlarged view of point B; Attached Figure 7 It is a partial structural stereogram of the continuous processing device for precision parts of the present invention.

[0016] In the above drawings: 1, base; 2, lower substrate; 201, first lower substrate; 202, second lower substrate; 3, top plate; 301, third mounting hole; 4, upper substrate; 401, second mounting hole; 5, material strip; 501, positioning hole; 6, upper punch; 7, lower die seat; 8, inlay hole; 9, inlay block; 10, forming gap; 11, guide pin; 12, groove; 13, guide hole; 14, first elastic member; 15, mounting hole; 161, punching punch; 162, punching die; 17, positioning pin; 18, movable plate; 19, push rod; 20, second elastic member; 21, avoidance groove; 22, limit block; 23, avoidance hole; 100, precision parts; 101, main body; 102, hollow cylindrical part; 200, feeding mechanism. DETAILED DESCRIPTION

[0017] The present invention can be further understood through the specific embodiments given below, but they are not intended to limit the present invention.

[0018] Embodiment 1: A continuous processing device for precision parts, used for processing precision parts 100, 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 200 mounted with a material belt 5; The precision part 100 further includes a body 101 and a hollow cylindrical portion 102 formed in the center of the lower portion of the body 101. The wall thickness of the hollow cylindrical portion 102 close to one end of the body 101 is greater than the wall thickness of the other end. The feeding mechanism 200 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 200. The other end of the material belt 5 intermittently moves from the feeding end of the lower substrate 2 and the upper substrate 4 to the discharging end thereof. 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. The lower ends of the vertically arranged upper punches 6 are exposed from the lower surface of the upper substrate 4 and are used for extrusion contact with the upper surface of the material strip 5. The upper surface of the lower substrate 2 is provided 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 inserted into the lower part of the insert hole 8. A forming gap 10 for the lower part of the material strip 5 to be squeezed in 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 that 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. Two punching punches 161 are installed on the upper base plate 4 and located on the rear side of the upper punch 6. The two punching punches 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 out two positioning holes 501 on the material strip 5. A plurality of punching dies 162 corresponding to the punching punches 161 are embedded and installed on the upper surface of the lower base plate 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 base plate 4, and a plurality of positioning pins 17 that cooperate with 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.

[0019] A movable plate 18 is arranged below the upper substrate 4. The movable plate 18 arranged parallel to the upper substrate 4 can be moved 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 substrate 4. A plurality of push rods 19 are arranged between the upper substrate 4 and the movable plate 18. The upper ends of the push rods 19 which can move in the vertical direction are embedded in the second mounting holes 401 on the upper substrate 4 and are connected to a vertically arranged second elastic member 20. The lower ends of the push rods 19 are in compression contact with the upper surface of the movable plate 18. 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 20 is in an extruded state and the lower end of the upper punch 6 passes through the movable plate 18 and is in compression contact with the upper surface of the material strip 5.

[0020] The lower substrate 2 further comprises a first lower substrate layer 201 and a second lower substrate layer 202 stacked one above the other. The first lower substrate layer 201 located on the upper layer is provided with a mounting through hole for the lower mold base 7 to be embedded.

[0021] The first lower substrate layer 201 and the second lower substrate layer 202 are connected by bolts.

[0022] A limiting block is detachably mounted on the top of the third mounting hole 301 that passes through from top to bottom.

[0023] The limiting block is connected to the third mounting hole 301 via threads.

[0024] 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 .

[0025] The upper surface of the lower substrate 2 is provided with a avoiding hole 23 corresponding to the positioning pin 17 .

[0026] The groove 12 is an annular groove extending along the circumference of the guide pin 11 .

[0027] A surface of the upper substrate 4 facing the guide pin 11 is provided with an avoidance groove 21 for the upper end of the guide pin 11 to be inserted.

[0028] Embodiment 2: A continuous processing device for precision parts, used for processing precision parts 100, 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 200 mounted with a material belt 5; The precision part 100 further includes a body 101 and a hollow cylindrical portion 102 formed in the center of the lower portion of the body 101. The wall thickness of the hollow cylindrical portion 102 close to one end of the body 101 is greater than the wall thickness of the other end. The feeding mechanism 200 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 200. The other end of the material belt 5 intermittently moves from the feeding end of the lower substrate 2 and the upper substrate 4 to the discharging end thereof. 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. The lower ends of the vertically arranged upper punches 6 are exposed from the lower surface of the upper substrate 4 and are used for extrusion contact with the upper surface of the material strip 5. The upper surface of the lower substrate 2 is provided 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 inserted into the lower part of the insert hole 8. A forming gap 10 for the lower part of the material strip 5 to be squeezed in 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 that 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. Two punching punches 161 are installed on the upper base plate 4 and located on the rear side of the upper punch 6. The two punching punches 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 out two positioning holes 501 on the material strip 5. A plurality of punching dies 162 corresponding to the punching punches 161 are embedded and installed on the upper surface of the lower base plate 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 base plate 4, and a plurality of positioning pins 17 that cooperate with 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.

[0029] A movable plate 18 is arranged below the upper substrate 4. The movable plate 18 arranged parallel to the upper substrate 4 can be moved 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 substrate 4. A plurality of push rods 19 are arranged between the upper substrate 4 and the movable plate 18. The upper ends of the push rods 19 which can move in the vertical direction are embedded in the second mounting holes 401 on the upper substrate 4 and are connected to a vertically arranged second elastic member 20. The lower ends of the push rods 19 are in compression contact with the upper surface of the movable plate 18. 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 20 is in an extruded state and the lower end of the upper punch 6 passes through the movable plate 18 and is in compression contact with the upper surface of the material strip 5.

[0030] The upper surface of the base 1 is provided with a mounting hole 15 corresponding to the guide hole 13 , the lower end of the first elastic member 14 is embedded in the mounting hole 15 , the upper end of the first elastic member 14 is embedded in the guide hole 13 connected to the mounting hole 15 and connected to the lower end of the guide pin 11 .

[0031] The lower substrate 2 further comprises a first lower substrate layer 201 and a second lower substrate layer 202 stacked one above the other. The first lower substrate layer 201 located on the upper layer is provided with a mounting through hole for the lower mold base 7 to be embedded.

[0032] The first lower substrate layer 201 and the second lower substrate layer 202 are connected by bolts.

[0033] A limiting block is detachably mounted on the top of the third mounting hole 301 that passes through from top to bottom.

[0034] 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 .

[0035] The first elastic member 14 is a spring.

[0036] The groove 12 is an annular groove extending along the circumference of the guide pin 11 .

[0037] The ratio of the thickness of the main body 101 to the thickness of the material strip 5 is 1:4.

[0038] The above embodiment is further explained 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 2 As 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.

[0039] When the above-mentioned continuous processing device for precision 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 entire surface of the material strip is pre-pressed by the movable plate, and the positioning pins can cooperate with the positioning holes to position the material strip to avoid deviation of the material strip; 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.

[0040] 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 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. In addition, two punching convex dies arranged at intervals perpendicular to the forward direction of the material belt are respectively located above the two edges of the material belt, and are used to punch two positioning holes on the material belt. A plurality of punching dies corresponding to the punching convex dies are embedded and installed on the upper surface of the lower substrate. The upper ends of a plurality of positioning pins used to be embedded in the positioning holes on the material belt are respectively installed on the upper substrate. A plurality of positioning pins matched with the positioning holes on the same side of the material belt are arranged at equal intervals along the forward direction of the material belt. Through the matching of the positioning pins with the positioning holes on the material belt, the consistency of the forward distance of the material belt each time can be ensured, and the material belt can be positioned at each work station before the forming process, so as to prevent the force of the material belt from being offset during the forming process, and further improve the processing accuracy. Furthermore, a plurality of push rods are arranged between the upper base plate and the movable plate. 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 are connected to a vertically arranged second elastic member. The lower ends of the push rods are in extrusion contact with the upper surface of the movable plate. Through the up and down movement of the movable plate under the action of the second elastic member, 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.

[0041] 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 continuous processing device for precision parts, used for processing precision parts (100), 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 (200) mounted with a material belt (5), characterized in that: the precision part (100) further comprises a body (101) and a hollow cylindrical portion (102) formed at the center of the lower portion of the body (101), the wall thickness of the hollow cylindrical portion (102) close to one end of the body (101) is greater than the wall thickness of the other end thereof, the feeding mechanism (200) 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 (200), 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; 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); the lower ends of the vertically arranged upper punches (6) are exposed from the lower surface of the upper substrate (4) and are used for extrusion contact with the upper surface of the material strip (5); the upper surface of the lower substrate (2) is provided with a plurality of lower die seats (7) corresponding to the upper punches (6); the upper surface of each lower die seat (7) is provided with a vertically arranged insert hole (8) 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) that 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; the groove (12) is an annular groove extending along the circumference of the guide pin (11); 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); 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).

2. The continuous processing device for precision parts according to claim 1, characterized in that: 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 a vertical direction are embedded in second mounting holes (401) on the upper base plate (4) and are aligned with a vertical guide. The second elastic member (20) is vertically arranged and connected, the lower end of the push rod (19) is in compression contact with the upper surface of the movable plate (18), when the movable plate (18) is away from the upper base plate (4), the lower end of the vertically arranged upper punch (6) is immersed in the movable plate (18), and when the movable plate (18) is in contact with the upper base plate (4), the second elastic member (20) is in an extruded state and the lower end of the upper punch (6) passes through the movable plate (18) and is in compression contact with the upper surface of the material strip (5).

3. The continuous processing device for precision parts according to claim 1, characterized in that: The ratio of the thickness of the main body (101) to the thickness of the material strip (5) is 1:

4.

4. The continuous processing device for precision parts according to claim 1, characterized in that: A limiting block (22) is detachably mounted on the top of the third mounting hole (301) which passes through from top to bottom.

5. The continuous processing device for precision parts according to claim 4, characterized in that: The limiting block (22) is connected to the third mounting hole (301) via threads.

6. The continuous processing device for precision parts according to claim 1, 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).

7. The continuous processing device for precision parts according to claim 1, characterized in that: The upper surface of the lower base plate (2) is provided with a position avoidance hole (23) corresponding to the positioning pin (17).

8. The continuous processing device for precision parts according to claim 1, characterized in that: The first elastic member (14) is a spring.

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