A forming manufacturing device for screw production

Abstract

This invention discloses a forming and manufacturing apparatus for screw production, relating to the field of screw processing. It includes a support frame with a base plate fixed to its top surface. A pair of vertical plates, arranged front to back, are mounted on the top surface of the base plate. A horizontal plate is fixed to the top edge of each vertical plate. A lifting plate slides between the two horizontal plates, carrying several screws. A lifting mechanism is provided between the vertical plates to drive the lifting plate to reciprocate. An intermittent shaft is rotatably inserted into the front of the front vertical plate, which is driven by a triangular chain to the fixed shaft of the lifting mechanism. A servo motor is mounted on the front of the front vertical plate, and its output end is equipped with an intermittent mechanism to drive the intermittent shaft to rotate intermittently. Four stamping seats are equidistantly arranged above the vertical plates, and four stamping mechanisms are mounted on the back of the rear vertical plate to drive the corresponding stamping seats to rise and fall. This invention achieves continuous automated screw production through the coordinated operation of these three mechanisms, reducing manual intervention, lowering the scrap rate, ensuring forming accuracy and efficiency, and meeting the needs of large-scale production.

Description

Technical Field

[0001] This invention relates to the field of screw processing technology, and in particular to a forming and manufacturing apparatus for screw production. Background Technology

[0002] In traditional screw production, head forming largely relies on manual assistance for conveying and positioning. Workers must manually place the screws onto the stamping station, which is not only inefficient but also prone to positioning errors due to hand fatigue, resulting in misaligned screw heads and incomplete outlines after stamping. Furthermore, manual handling poses safety hazards and fails to meet the demands of large-scale production for consistent output and quality, thus hindering improvements in production efficiency.

[0003] While some screw forming equipment achieves semi-automation, it lacks precise intermittent transmission and synchronous positioning structures. Jamming and displacement easily occur during the conveying stage, and the screws tend to wobble during stamping, resulting in low head forming accuracy. Furthermore, due to the lack of an elastic demolding structure after stamping, screws often stick to the mold, requiring manual cleaning, extending the production cycle, increasing labor costs, and making it difficult to meet the high-efficiency, high-precision requirements of modern screw mass production. Summary of the Invention

[0004] The purpose of this invention is to solve the problem of poor stamping effect of screw heads in the prior art, and to propose a forming and manufacturing device for screw production.

[0005] To address the problems existing in the prior art, the present invention adopts the following technical solution:

[0006] A forming and manufacturing apparatus for producing screws includes a support frame, a base plate fixedly provided on the top surface of the support frame, a pair of vertical plates arranged side by side along the front-back direction fixedly provided on the top surface of the base plate, a horizontal plate fixedly provided on the top edge of each vertical plate, and a lifting plate slidably provided between the pair of horizontal plates, a plurality of screws equidistantly distributed on the lifting plate, and a lifting mechanism for driving the lifting plate to perform reciprocating lifting motion between the pair of vertical plates.

[0007] An intermittent shaft is rotatably inserted into the front of the vertical plate located on the front side. The intermittent shaft is connected to a pair of fixed shafts in the lifting mechanism via a triangular chain. A servo motor is fixedly installed on the front of the vertical plate located on the front side. An intermittent mechanism for driving the intermittent shaft to rotate intermittently is installed at the output end of the servo motor. Four stamping seats are equidistantly arranged above the pair of vertical plates. The stamping seats perform stamping forming actions on a number of screws in sequence. Four stamping mechanisms for driving the corresponding stamping seats to perform reciprocating lifting and lowering movements are installed on the back of the vertical plate located on the rear side.

[0008] Preferably, the top surface of the lifting plate is fixed with a plurality of equidistant triangular actuating blocks, and a circular slot is provided between adjacent triangular actuating blocks, and the bottom end of each screw is engaged in the corresponding circular slot.

[0009] Preferably, the lifting mechanism includes a hinged connecting rod, a fixed swing arm, and a fixed shaft. A pair of single-ear seats are fixedly provided on the bottom surface of the lifting plate. A central shaft is rotatably inserted into the bottom end of each single-ear seat. A hinged connecting rod is fixed at both ends of each central shaft.

[0010] Both ends of each of the hinged connecting rods are hinged to a fixed swing arm, and a fixed shaft is fixedly provided at the bottom end of each of the fixed swing arms. Each fixed shaft is rotatably inserted into the vertical plate on the corresponding side.

[0011] Preferably, a sprocket one is fixedly sleeved in the middle of the intermittent shaft, and the front ends of the first and third fixed shafts on the front vertical plate both extend forward and are fixedly sleeved with sprocket two. The sprocket one is driven by meshing with the two sprocket twos through a triangular chain belt.

[0012] Preferably, the intermittent mechanism includes a limiting turntable, a crank arm, and an intermittent plate. The limiting turntable is fixedly sleeved on the end of the output shaft of the servo motor. A limiting notch is formed on the limiting turntable. A crank arm is fixedly mounted in the middle of the output shaft of the servo motor. The crank arm faces the same direction as the limiting notch, and a limiting pin is fixedly mounted on the outer end of the crank arm.

[0013] An intermittent disk is fixedly sleeved at the front end of the intermittent shaft. The outer ring surface of the intermittent disk is alternately provided with several U-shaped notches and arc-shaped notches. The limiting pin can slide into the corresponding U-shaped notch and rotate the intermittent disk. The limiting turntable can also be inserted into the corresponding arc-shaped notch during rotation.

[0014] Preferably, each of the stamping seats has an inverted T-shaped groove in the middle of its bottom surface, and the depth of the four inverted T-shaped grooves increases sequentially according to the stamping stage of the screw. A tension spring is fixed to the top of each inverted T-shaped groove, and a stamping head is fixed to the bottom of each tension spring. The bottom shape of the four stamping heads changes sequentially according to the stamping requirements of the screw.

[0015] Preferably, a plurality of T-shaped sliding holes are provided on the opposite surfaces of the pair of horizontal plates, and a T-shaped sliding rod is slidably inserted into each T-shaped sliding hole. An arc-shaped groove is provided on the inner end of each T-shaped sliding rod. A pair of arc-shaped grooves on the same side are respectively engaged with the front and rear sides of the corresponding screw. A U-shaped lug is fixed on the outer end of each T-shaped sliding rod, and a fixing pin is fixed in the opening of each U-shaped lug.

[0016] Preferably, the stamping mechanism includes a T-shaped connecting rod and an L-shaped connecting rod. Four equidistant fixed seats are fixed on the back of the vertical plate located at the rear. Each fixed seat has a rectangular sliding hole, and a T-shaped connecting rod is slidably inserted into each rectangular sliding hole. A bent connecting rod and an L-shaped connecting rod are fixed on the front and rear sides of each stamping seat, respectively. The bottom end of each L-shaped connecting rod is fixedly connected to the T-shaped connecting rod on the corresponding side.

[0017] Preferably, each of the bent connecting rods has a first oblique pin hole at its bottom end, each of the L-shaped connecting rods has a triangular connecting plate fixed on it, and each of the triangular connecting plates has a second oblique pin hole. The fixing pins in the U-shaped lugs on the front side are slidably inserted into the corresponding first oblique pin hole, and the fixing pins in the U-shaped lugs on the rear side are slidably inserted into the corresponding second oblique pin hole.

[0018] Preferably, each of the T-shaped connecting rods has an elliptical pin hole at its top, and the rear end of the fixed shaft on the rear vertical plate extends backward and is fixedly fitted with a fixed turntable. Each fixed turntable is fixed with an eccentrically arranged eccentric pin, and each eccentric pin is slidably engaged in the corresponding elliptical pin hole.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. In this invention, the lifting mechanism drives the lifting plate to reciprocate through a fixed shaft, a fixed swing arm, and a hinged connecting rod, and works in conjunction with a triangular actuating block to move the screw, with the circular slot providing precise positioning; in actual production, it can achieve continuous screw conveying, avoid manual handling deviations, improve conveying efficiency, ensure accurate positioning in subsequent stamping, and reduce scrap rate caused by inaccurate positioning;

[0021] 2. In this invention, in the intermittent mechanism, the servo motor drives the crank arm, the limiting turntable and the intermittent plate to cooperate, the limiting pin shaft moves the intermittent plate to rotate, and the arc-shaped notch achieves rigid limiting; during production, the screw is kept stably in the stamping stage and moves accurately in the conveying stage, which solves the problem of insufficient transmission accuracy, ensures that the screw does not shift during stamping, and improves the head forming accuracy.

[0022] 3. In this invention, the fixed turntable and eccentric pin of the stamping mechanism drive the T-shaped connecting rod and L-shaped connecting rod to raise and lower the stamping seat, and the bending connecting rod and triangular connecting plate are linked to the T-shaped sliding rod for clamping; in production, stamping and positioning are synchronized, tension springs assist in demolding, avoid screw offset and adhesion, improve forming efficiency and quality, and adapt to multi-stage stamping requirements;

[0023] In summary, this invention, through the coordinated use of lifting, intermittent, and stamping mechanisms, achieves continuous and automated production of screws in actual production, reduces manual intervention, lowers the scrap rate, and simultaneously ensures forming accuracy and efficiency, meeting the requirements of large-scale production for screw quality and output. Attached Figure Description

[0024] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the overall structure of the present invention from another perspective;

[0027] Figure 3 This is a schematic cross-sectional view of the overall structure of the present invention;

[0028] Figure 4 This is a schematic diagram of the lifting mechanism and intermittent mechanism of the present invention;

[0029] Figure 5 This is an exploded view of the lifting mechanism and intermittent mechanism of the present invention;

[0030] Figure 6 This is a schematic cross-sectional view of the lifting plate and four stamping blocks of the present invention;

[0031] Figure 7 This is an exploded cross-sectional view of the lifting plate and four stamping blocks structure of the present invention;

[0032] Figure 8 This is a schematic diagram of the stamping mechanism of the present invention;

[0033] Figure 9 This is an exploded view of the stamping mechanism of the present invention;

[0034] Figure 10 This is a schematic diagram illustrating the trajectory of the lifting plate of the present invention lifting several screws.

[0035] In the diagram: 100, Support frame; 101, Base plate; 102, Vertical plate; 103, Horizontal plate; 104, T-shaped sliding hole; 105, T-shaped sliding rod; 106, Arc-shaped slot; 107, U-shaped lug; 108, Fixed pin; 200, Lifting plate; 201, Triangular actuating block; 202, Circular slot; 203, Single lug; 204, Screw; 205, Fixed shaft; 206, Fixed swing arm; 207, Hinge connecting rod; 208, Central shaft; 300, Servo motor; 301, Crank swing arm; 302, Limit pin; 303, Limit... Positioning turntable; 304, Limiting notch; 305, Intermittent shaft; 306, Sprocket 1; 307, Sprocket 2; 308, Triangular chain belt; 309, Intermittent disc; 310, U-shaped notch; 311, Arc-shaped notch; 400, Stamping seat; 401, Bending connecting rod; 402, L-shaped connecting rod; 403, Triangular connecting plate; 404, Fixed seat; 405, T-shaped connecting rod; 406, Elliptical pin hole; 407, Fixed turntable; 408, Eccentric pin shaft; 409, Tension spring; 410, Stamping forming head; 411, Angled pin hole 1; 412, Angled pin hole 2. Detailed Implementation

[0036] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0037] Example 1: This example provides a forming and manufacturing apparatus for screw production. See [link to example]. Figures 1 to 10 Specifically, it includes a support frame 100, which is used to fix and support the base plate 101 and all components above it to ensure the overall structural stability. The base plate 101 is fixed on the top surface of the support frame 100. The base plate 101 serves as the mounting base for the vertical plate 102, thereby connecting and fixing the vertical plate 102 to the support frame 100. A pair of vertical plates 102 arranged side by side along the front-back direction are fixed on the top surface of the base plate 101. A horizontal plate 103 is fixed on the top edge of each vertical plate 102. A lifting plate 200 is slidably arranged between the pair of horizontal plates 103. Several equally spaced screws 204 are placed on the lifting plate 200. A lifting mechanism is provided between the pair of vertical plates 102 to drive the lifting plate 200 to perform reciprocating lifting motion.

[0038] The top surface of the lifting plate 200 is fixed with several equidistant triangular actuating blocks 201. When the lifting plate 200 falls, the triangular actuating blocks 201 push the screws 204 to the right by one station to complete precise alignment. A circular slot 202 is provided between adjacent triangular actuating blocks 201, and the bottom end of each screw 204 is locked in the corresponding circular slot 202.

[0039] An intermittent shaft 305 is rotatably inserted into the front of the vertical plate 102 located on the front side. The intermittent shaft 305 receives power from the intermittent mechanism and transmits it to the fixed shaft 205 via a triangular chain belt 308, thus realizing power transmission. The intermittent shaft 305 is connected to a pair of fixed shafts 205 in the lifting mechanism via the triangular chain belt 308. A servo motor 300 is fixedly mounted on the front of the vertical plate 102 located on the front side. The servo motor 300 drives the intermittent mechanism to operate through its output shaft, providing power for the intermittent rotation of the intermittent shaft 305. The output end of the servo motor 300 is equipped with an intermittent mechanism for driving the intermittent shaft 305 to rotate intermittently; four stamping seats 400 are equidistantly arranged above a pair of vertical plates 102. The stamping seats 400 drive the stamping head 410 to perform stamping action on the screws 204 through reciprocating lifting motion. The stamping seats 400 perform stamping action on a number of screws 204 in sequence. Four stamping mechanisms are installed on the back of the vertical plate 102 located at the rear side for driving the corresponding stamping seats 400 to perform reciprocating lifting motion.

[0040] In the specific implementation process, such as Figure 3 and Figure 5 As shown, the lifting mechanism includes a hinged link 207, a fixed swing arm 206, and a fixed shaft 205. A pair of single ear seats 203 are fixedly provided on the bottom surface of the lifting plate 200. A central shaft 208 is rotatably inserted into the bottom end of each single ear seat 203. The central shaft 208 receives the force of the hinged link 207 and drives the lifting plate 200 to rise and fall as a whole. A hinged link 207 is fixed at both ends of each central shaft 208. The hinged link 207 converts the swing of the fixed swing arm 206 into the reciprocating lifting motion of the lifting plate 200.

[0041] Both ends of each hinged link 207 are hinged to the fixed swing arm 206. The fixed swing arm 206 swings by rotating the fixed shaft 205, thereby pulling the hinged link 207. The bottom end of each fixed swing arm 206 is fixedly provided with a fixed shaft 205. The fixed shaft 205 receives the power from the intermittent shaft 305 and transmits it to the fixed swing arm 206, driving the lifting plate 200 to move. Each fixed shaft 205 is rotatably inserted into the vertical plate 102 on the corresponding side.

[0042] A sprocket 306 is fixedly mounted in the middle of the intermittent shaft 305. The sprocket 306 meshes with the triangular chain belt 308 to transmit the rotational power of the intermittent shaft 305 to the sprocket 307. The front ends of the first and third fixed shafts 205 on the front vertical plate 102 extend forward and are fixedly mounted with sprockets 307. The sprocket 306 meshes with the two sprockets 307 through the triangular chain belt 308. The triangular chain belt 308 is used to transmit the power between the sprocket 306 and the sprockets 307 to ensure that they rotate synchronously.

[0043] It should be noted that: in this embodiment, as Figure 6 and Figure 7 As shown, each stamping base 400 has an inverted T-shaped groove in the middle of its bottom surface, and the depth of the four inverted T-shaped grooves increases sequentially according to the stamping stage of the screw 204. A tension spring 409 is fixed to the top of each inverted T-shaped groove. The tension spring 409 provides elastic support for the stamping head 410 to avoid damage to the screw 204 shank by rigid stamping. At the same time, it releases elastic force to assist in demolding during demolding. A stamping head 410 is fixed to the bottom of each tension spring 409, and the shape of the bottom of the stamping head 410 changes according to the stamping stage, sequentially completing the initial indentation, contour shaping, detail trimming, and final shaping of the screw 204 head. The bottom shape of the four stamping heads 410 changes sequentially according to the stamping requirements of the screw 204.

[0044] A pair of horizontal plates 103 each have several equidistantly distributed T-shaped sliding holes 104 on their opposite surfaces. A T-shaped sliding rod 105 is slidably inserted into each T-shaped sliding hole 104. The T-shaped sliding rod 105 clamps and releases the screw 204 by sliding, assisting in positioning. Each T-shaped sliding rod 105 has an arc-shaped groove 106 at its inner end. A pair of arc-shaped grooves 106 on the same side respectively engage with the front and rear sides of the corresponding screw 204. The outer end of the T-shaped slide bar 105 is fixedly provided with a U-shaped ear seat 107. The U-shaped ear seat 107 provides a mating part for the first oblique pin hole 411 and the second oblique pin hole 412 to realize the linkage between the T-shaped slide bar 105 and the stamping mechanism. A fixed pin 108 is fixedly provided in the opening of each U-shaped ear seat 107. The fixed pin 108 is slidably inserted into the first oblique pin hole 411 or the second oblique pin hole 412 to transmit the force of the stamping mechanism and drive the T-shaped slide bar 105 to slide.

[0045] The working principle of this embodiment is as follows: The screw 204 to be processed is placed on the leftmost side of the lifting plate 200. The stamped screw 204 is taken away from the rightmost side of the lifting plate 200. Through the reciprocating lifting action of the lifting plate 200, the screw 204 is driven to move to the right along a pair of horizontal plates 103.

[0046] After the servo motor 300 starts, it drives the intermittent shaft 305 to rotate intermittently through the intermittent mechanism. The sprocket 306 fixedly sleeved in the middle of the intermittent shaft 305 will mesh with the sprocket 307 at the front end of the first and third fixed shafts 205 on the front vertical plate 102 through the triangular chain belt 308, thereby driving the two fixed shafts 205 to rotate synchronously and intermittently.

[0047] When the fixed shaft 205 rotates, it will drive the fixed swing arm 206 to swing intermittently. The fixed swing arm 206 then pulls the central shaft 208 on the single ear seat 203 on the bottom surface of the lifting plate 200 through the hinged connecting rod 207. At the same time, it drives the other fixed swing arms 206 to rotate in coordination with the fixed shaft 205. Finally, the lifting plate 200 and the screws 204 positioned above it will perform intermittent cyclic motion along the trajectory ABCD. This motion provides continuous conveying power for the stamping of the screws 204.

[0048] like Figure 10 As shown, the functions of the lifting plate 200 at different trajectory stages and the states of the screw 204 are as follows:

[0049] Point A: Initial Loading and Positioning Calibration

[0050] When the lifting plate 200 and screws 204 are at point A, several screws 204 are placed on both sides of the top surface of a pair of horizontal plates 103. At this stage, the workers can check whether the screws 204 are accurately positioned and ensure that each screw 204 is in a horizontally aligned state, in preparation for the first stage of stamping.

[0051] Point A - Point B: Lift off the horizontal plate 103 and enter the stamping preparation position.

[0052] When the lifting plate 200 moves from point A to point B, under the linkage of the hinged connecting rod 207 and the fixed swing arm 206, the lifting plate 200 drives several screws 204 to gradually rise until they are completely detached from the top surface of the horizontal plate 103 and suspended above the pair of horizontal plates 103. During this process, the screws 204 always remain vertical to avoid friction between the screws 204 and the horizontal plate 103 during the movement, which would affect the subsequent processing accuracy.

[0053] Point B to Point C: Lower and reset horizontal plate 103 to complete a single workstation movement.

[0054] As the lifting plate 200 moves from point B to point C, it causes several screws 204 to fall downwards, eventually landing back between a pair of horizontal plates 103. The screws 204 then rest on both sides of the top surface of the horizontal plates 103. During this descent, the triangular actuating block 201 pushes the screws 204 from the side, shifting them one position to the right for precise alignment during the first stage of stamping. Simultaneously, the stamping seat 400 presses downwards onto the top of the screws 204, and the T-shaped sliding rod 105 slides synchronously within the T-shaped sliding hole 104 as the screws 204 move, maintaining their positioning.

[0055] Points C-D: Lifting plate 200 disengages from screw 204 to avoid interfering with stamping.

[0056] When the lifting plate 200 moves from point C to point D, it will gradually detach from the screw 204. At this time, the screw 204 is only positioned with the top surface of the horizontal plate 103 through the arc-shaped slot 106 of the T-shaped slide bar 105, so as to avoid interference between the lifting plate 200 and the stamping seat 400 or the screw 204 that is stamping during the reset process, and ensure that the stamping action is carried out smoothly.

[0057] Point D-Point A: Lifting plate 200 resets bearing capacity, enters the next cycle.

[0058] When the lifting plate 200 moves from point D to point A, it gradually returns to its initial height. The circular slot 202 on its top surface re-engages with the bottom end of the corresponding screw 204, thus supporting the screw 204 again. At this time, several screws 204 have completed one rightward movement and are ready to enter the processing range of the next stamping seat 400, starting the next cycle.

[0059] When a number of screws 204 pass directly below four stamping blocks 400 in sequence under the drive of the lifting plate 200, the corresponding stamping blocks 400 are driven to perform reciprocating lifting and lowering motion to realize the staged forming of the screws 204.

[0060] The depth of the inverted T-shaped groove in the middle of the bottom surface of each stamping seat 400 increases sequentially according to the stamping stage of the screw 204. From the initial shaping to the final forming, the groove depth gradually increases to accommodate the change in the thickness of the screw head 204. At the same time, the tension spring 409 fixed to the top of the inverted T-shaped groove provides elastic support to the stamping head 410 at the bottom, preventing rigid stamping from damaging the shank of the screw 204.

[0061] The bottom shapes of the four stamping heads 410 change sequentially according to the forming requirements of the screw head 204. The first stamping head 410 is a preliminary indentation type, which completes the initial pressing of the head; the second is a contour shaping type, which determines the basic contours such as the cross on the head; the third is a detail trimming type, which optimizes the edges and corners of the head; and the fourth is a final shaping type, which ensures that the head size and precision meet the standards. When the screw 204 moves to the bottom of the corresponding stamping seat 400, the stamping seat 400 is driven to descend. Under the buffering action of the tension spring 409, the stamping head 410 performs precise stamping on the head of the screw 204. After the stamping is completed, the stamping seat 400 rises and resets, and the lifting plate 200 continues to drive the screw 204 to move to the next stamping seat 400. After passing through four stamping seats 400, the head of the screw 204 completes a complete stamping cycle.

[0062] The lifting plate 200 drives the screw 204 to complete the full trajectory cycle of ABCD, that is, to realize one station movement and one stamping operation; the device, through the continuous drive of the servo motor 300 and the precise control of the intermittent mechanism, makes the lifting plate 200 continuously cycle, driving the new screws 204 to be processed to enter the stamping process in sequence, while the screws 204 with completed head forming are taken out from the end, ultimately realizing the continuous and automated production of screw heads 204.

[0063] Example 2: Based on Example 1, this example adds an intermittent mechanism consisting of a limiting turntable 303, a crank swing arm 301, and an intermittent disc 309. This solves the problem of insufficient intermittent transmission accuracy and the resulting misalignment during screw head stamping in Example 1, further improving the stability and processing accuracy of screw head forming. It also includes:

[0064] In the specific implementation process, such as Figure 4 and Figure 5 As shown, the intermittent mechanism includes a limiting turntable 303, a crank arm 301, and an intermittent disk 309. The limiting turntable 303 is fixedly sleeved at the end of the output shaft of the servo motor 300. The limiting turntable 303 rotates with the servo motor 300. When the limiting pin 302 disengages from the U-shaped notch 310, it engages with the arc-shaped notch 311, thereby achieving rigid limiting of the intermittent disk 309. A limiting notch 304 is provided on the limiting turntable 303. The crank arm 301 is fixedly mounted in the middle of the output shaft of the servo motor 300. The crank arm 301 rotates with the servo motor 300 and drives the intermittent disk 309 to rotate through the limiting pin 302, thus transmitting power. The crank arm 301 and the limiting notch 304 are aligned. The limiting pin 302 is fixedly mounted at the outer end of the crank arm 301. The limiting pin 302 drives the intermittent disk 309 to rotate through physical thrust, which is the core of power transmission in the intermittent drive.

[0065] An intermittent disk 309 is fixedly sleeved at the front end of the intermittent shaft 305. The intermittent disk 309 receives the thrust of the limiting pin 302 and drives the intermittent shaft 305 to rotate. At the same time, it achieves static limiting through the arc-shaped notch 311 and the limiting turntable 303. The outer ring surface of the intermittent disk 309 is alternately provided with several U-shaped notches 310 and arc-shaped notches 311. The limiting pin 302 can slide into the corresponding U-shaped notch 310 and push the intermittent disk 309 to rotate. The limiting turntable 303 can be inserted into the corresponding arc-shaped notch 311 during rotation.

[0066] The working principle of this embodiment is as follows: When the device starts to process the head of the screw 204, the servo motor 300 drives its motor shaft to rotate, which synchronously drives the crank arm 301 in the middle of the output shaft and the limit turntable 303 at the end to rotate. The two always maintain the same direction and speed of rotation, providing a stable power source for subsequent intermittent transmission.

[0067] As the crank arm 301 rotates, the limiting pin 302 at its outer end will periodically slide into the U-shaped notch 310 on the outer ring surface of the intermittent plate 309. When the limiting pin 302 is engaged in the U-shaped notch 310, it will drive the intermittent plate 309 to rotate around the axis of the intermittent shaft 305 through physical thrust, thereby driving the intermittent shaft 305 to rotate synchronously. This process corresponds to the conveying stage of the screw head processing, providing power for the lifting plate 200 to move the screw 204, ensuring that the screw 204 can move accurately to the next stamping station.

[0068] After the limit pin 302 disengages from the current U-shaped notch 310, the limit turntable 303 will continue to rotate with the output shaft of the servo motor 300 until it is engaged in the arc-shaped notch 311 of the intermittent plate 309. At this time, the limit turntable 303 and the arc-shaped notch 311 form a rigid limit, preventing the intermittent plate 309 and the intermittent shaft 305 from continuing to rotate, so that the entire transmission system enters the dwell stage. This stage corresponds to the stamping stage of the screw head 204, ensuring that when the stamping seat 400 drives the stamping head 410 to stamp the top of the screw 204, the screw 204 will not be displaced due to the shaking of the transmission system, thus ensuring the dimensional accuracy and contour integrity of the head stamping.

[0069] The first sprocket 306 engages with the second sprocket 307 at the front end of the first and third fixed shafts 205 on the front vertical plate 102 via the triangular chain belt 308, thereby driving the two fixed shafts 205 to rotate synchronously and intermittently, completing the intermittent power transmission to the lifting mechanism.

[0070] Example 3: Based on Example 2, this example adds a stamping mechanism composed of a T-shaped connecting rod 405, an L-shaped connecting rod 402, and a fixed turntable 407. This solves the problem in Example 2 where the stamping action and the screw 204 clamping and positioning were not synchronized, easily leading to screw 204 displacement during stamping or difficulty in detaching from the mold after stamping. It achieves linkage control between stamping and positioning, further improving the efficiency and quality of screw 204 head forming. It also includes:

[0071] In the specific implementation process, such as Figure 2 and Figure 9As shown, the stamping mechanism includes a T-shaped connecting rod 405 and an L-shaped connecting rod 402. Four equidistant fixed seats 404 are fixed to the back of the rear vertical plate 102. The fixed seats 404 provide sliding tracks for the T-shaped connecting rods 405, restricting their movement direction. Each fixed seat 404 has a rectangular sliding hole, and a T-shaped connecting rod 405 is slidably inserted into each rectangular sliding hole. The T-shaped connecting rod 405 converts the circular motion of the eccentric pin 408 into linear motion. The movement causes the stamping seat 400 to rise and fall. Each stamping seat 400 has a bending connecting rod 401 and an L-shaped connecting rod 402 fixed on its front and rear sides respectively. The bending connecting rod 401 rises and falls with the stamping seat 400 and cooperates with the fixed pin 108 through the oblique pin hole 411, which drives the T-shaped slide rod 105 to slide. The bottom end of each L-shaped connecting rod 402 is fixedly connected to the corresponding T-shaped connecting rod 405 on the same side. The L-shaped connecting rod 402 transmits the power of the T-shaped connecting rod 405, which drives the stamping seat 400 to rise and fall.

[0072] Each bent connecting rod 401 has a first oblique pin hole 411 at its bottom end. Each L-shaped connecting rod 402 has a triangular connecting plate 403 fixed on it. The triangular connecting plate 403 moves up and down with the L-shaped connecting rod 402. It cooperates with the fixed pin 108 through the second oblique pin hole 412 to assist in driving the T-shaped slide rod 105 to slide. Each triangular connecting plate 403 has a second oblique pin hole 412. The fixed pin 108 in the U-shaped ear seat 107 on the front side is slidably inserted into the corresponding first oblique pin hole 411. The fixed pin 108 in the U-shaped ear seat 107 on the rear side is slidably inserted into the corresponding second oblique pin hole 412.

[0073] Each T-shaped connecting rod 405 has an elliptical pin hole 406 at its top. The rear end of the fixed shaft 205 on the rear vertical plate 102 extends backward and is fixedly fitted with a fixed turntable 407. The fixed turntable 407 rotates with the fixed shaft 205 and is fixedly fitted with an eccentric pin 408, which converts the rotation of the fixed shaft 205 into the eccentric motion of the eccentric pin 408. Each fixed turntable 407 is fixedly fitted with an eccentrically arranged eccentric pin 408. The eccentric pin 408 pushes the T-shaped connecting rod 405 up and down through eccentric circumferential motion, providing power for the lifting and lowering of the stamping seat 400. Each eccentric pin 408 is slidably engaged in the corresponding elliptical pin hole 406.

[0074] The working principle of this embodiment is as follows: When the device is in the head processing state of screw 204, the fixed shaft 205 on the rear vertical plate 102 rotates intermittently under the drive of the intermittent mechanism of embodiment two, and synchronously drives the fixed turntable 407 fixedly sleeved at its end to rotate, and the eccentric pin 408 on the fixed turntable 407 moves eccentrically with it.

[0075] During rotation, the eccentric pin 408 is always slidably engaged in the elliptical pin hole 406 at the top of the T-shaped connecting rod 405. Through the force of the eccentric motion, the T-shaped connecting rod 405 is pushed to slide up and down along the rectangular sliding hole on the fixed seat 404. This process converts the circular motion into linear motion, providing stable power for the lifting and lowering of the stamping seat 400.

[0076] When the T-shaped connecting rod 405 slides back and forth, it drives the stamping seat 400 and the bending connecting rod 401 on the front side of the stamping seat 400 to move up and down in a synchronous manner through the L-shaped connecting rod 402 fixed to it. The rising and falling rhythm of the stamping seat 400 is precisely matched with the dwell and rotation stages of the intermittent mechanism in Embodiment 2, ensuring that stamping is performed when the screw 204 is stably stopped and reset is completed when moving.

[0077] When the stamping seat 400 descends, the oblique pin hole 411 at the bottom of the bending connecting rod 401 forms a sliding fit with the fixed pin 108 in the front and rear U-shaped ear seats 107. At the same time, the oblique pin hole 412 of the triangular connecting plate 403 on the L-shaped connecting rod 402 also fits with the corresponding fixed pin 108. Through the guiding effect of the oblique hole, the U-shaped ear seat 107 is pushed to drive the T-shaped slide rod 105 to slide inward along the T-shaped slide hole 104 on the horizontal plate 103.

[0078] When the T-shaped slide bar 105 slides inward, the arc-shaped groove 106 at its end gradually approaches and engages with the front and rear sides of the screw 204. A pair of adjacent T-shaped slide bars 105 form a rigid clamping of the screw 204. This state corresponds to the stamping seat 400 descending to its lowest point, ensuring that the screw 204 will not shift left or right or wobble up or down when the head is stamped, thus ensuring stamping accuracy.

[0079] After the T-shaped slide bar 105 stably clamps the screw 204, the stamping head 410 in the inverted T-shaped groove on the bottom surface of the stamping seat 400 contacts the top of the screw 204. As the stamping seat 400 continues to descend, the stamping head 410, guided by the inverted T-shaped groove, stamps the top of the screw 204 according to the head forming requirements. At the same time, the tension spring 409 at the top of the inverted T-shaped groove is compressed to store elasticity for subsequent demolding.

[0080] After the head stamping is completed, the fixed shaft 205 continues to rotate, driving the fixed turntable 407 and the eccentric pin 408 to move, causing the T-shaped connecting rod 405 to drive the stamping seat 400 to rise and reset. At this time, the compressed tension spring 409 releases its elasticity, pushing the stamping head 410 downward to push the screw 204, preventing the screw 204 from sticking in the inverted T-shaped groove due to stamping, thus achieving smooth demolding. At the same time, the stamping seat 400 rises, driving the bending connecting rod 401 and the triangular connecting plate 403 to rise. The oblique pin hole one 411 and oblique pin hole two 412 pull the T-shaped slide rod 105 to slide outward through the fixed pin 108, and the arc-shaped slot 106 disengages from the screw 204, releasing the clamp and completing a complete head stamping operation.

[0081] As the fixed shaft 205 rotates intermittently under the drive of the intermittent mechanism, in conjunction with the lifting plate 200 in Embodiment 2 driving the screw 204 to move its work position, the screw 204 passes through four stamping seats 400 in sequence, gradually completing the initial indentation, contour shaping, detail trimming, and final shaping of the head, ultimately achieving continuous and high-quality production of the screw 204 head.

[0082] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A forming and manufacturing apparatus for screw production, comprising a support frame (100), characterized in that: The top surface of the support frame (100) is fixed with a base plate (101), and the top surface of the base plate (101) is fixed with a pair of vertical plates (102) arranged side by side along the front-back direction. The top edge of each vertical plate (102) is fixed with a horizontal plate (103), and a lifting plate (200) is slidably arranged between the pair of horizontal plates (103). The lifting plate (200) carries and places a number of equally spaced screws (204), and a lifting mechanism for driving the lifting plate (200) to perform reciprocating lifting motion is arranged between the pair of vertical plates (102). An intermittent shaft (305) is rotatably inserted on the front of the vertical plate (102) located on the front side. The intermittent shaft (305) is connected to a pair of fixed shafts (205) in the lifting mechanism via a triangular chain belt (308). A servo motor (300) is fixedly installed on the front of the vertical plate (102) located on the front side. An intermittent mechanism for driving the intermittent shaft (305) to rotate intermittently is installed at the output end of the servo motor (300). Four stamping seats (400) are equidistantly arranged above the pair of vertical plates (102). The stamping seats (400) perform stamping forming actions on a number of screws (204) in sequence. Four stamping mechanisms for driving the corresponding stamping seats (400) to perform reciprocating lifting and lowering movements are installed on the back of the vertical plate (102) located on the rear side. The top surface of the lifting plate (200) is fixed with a number of equidistant triangular actuating blocks (201), and a circular slot (202) is provided between adjacent triangular actuating blocks (201). The bottom end of each screw (204) is locked in the corresponding circular slot (202). The lifting mechanism includes a hinged connecting rod (207), a fixed swing arm (206), and a fixed shaft (205). A pair of single ear seats (203) are fixedly provided on the bottom surface of the lifting plate (200). A central shaft (208) is rotatably inserted into the bottom end of each single ear seat (203). A hinged connecting rod (207) is fixedly provided at both ends of each central shaft (208). The two ends of each of the hinged connecting rods (207) are respectively hinged to the fixed swing arm (206), and the bottom end of each of the fixed swing arms (206) is fixedly provided with a fixed shaft (205), and each of the fixed shafts (205) is rotatably inserted into the vertical plate (102) on the corresponding side. A plurality of T-shaped sliding holes (104) are provided on the opposite surfaces of the pair of horizontal plates (103). A T-shaped sliding rod (105) is slidably inserted into each T-shaped sliding hole (104). An arc-shaped slot (106) is provided at the inner end of each T-shaped sliding rod (105). A pair of arc-shaped slots (106) on the same side are respectively engaged with the front and rear sides of the corresponding screws (204). A U-shaped ear seat (107) is fixed at the outer end of each T-shaped sliding rod (105). A fixing pin (108) is fixed in the opening of each U-shaped ear seat (107). The stamping mechanism includes a T-shaped connecting rod (405) and an L-shaped connecting rod (402). Four equally spaced fixed seats (404) are fixed on the back of the vertical plate (102) located at the rear. Each fixed seat (404) has a rectangular sliding hole, and a T-shaped connecting rod (405) is slidably inserted into each rectangular sliding hole. A bent connecting rod (401) and an L-shaped connecting rod (402) are fixed on the front and rear sides of each stamping seat (400), respectively. The bottom end of each L-shaped connecting rod (402) is fixedly connected to the T-shaped connecting rod (405) on the corresponding side. Each of the bent connecting rods (401) has a first oblique pin hole (411) at its bottom end. Each of the L-shaped connecting rods (402) has a triangular connecting plate (403) fixed on it. Each of the triangular connecting plates (403) has a second oblique pin hole (412). The fixing pin (108) in the U-shaped ear (107) on the front side is slidably inserted into the corresponding first oblique pin hole (411). The fixing pin (108) in the U-shaped ear (107) on the rear side is slidably inserted into the corresponding second oblique pin hole (412). Each of the T-shaped connecting rods (405) has an elliptical pin hole (406) at its top. The rear end of the fixed shaft (205) on the rear vertical plate (102) extends backward and is fixedly fitted with a fixed turntable (407). Each fixed turntable (407) is fixed with an eccentrically arranged eccentric pin (408). Each eccentric pin (408) is slidably engaged in the corresponding elliptical pin hole (406).

2. The forming and manufacturing apparatus for screw production according to claim 1, characterized in that: The intermittent shaft (305) is fixedly fitted with a sprocket one (306) in the middle. The front ends of the first and third fixed shafts (205) on the front vertical plate (102) both extend forward and are fixedly fitted with sprocket two (307). The sprocket one (306) is driven by meshing with the two sprocket two (307) through a triangular chain belt (308).

3. The forming and manufacturing apparatus for screw production according to claim 2, characterized in that: The intermittent mechanism includes a limiting turntable (303), a crank arm (301), and an intermittent plate (309). The limiting turntable (303) is fixedly sleeved at the end of the output shaft of the servo motor (300). A limiting notch (304) is provided on the limiting turntable (303). The crank arm (301) is fixedly mounted in the middle of the output shaft of the servo motor (300). The crank arm (301) and the limiting notch (304) are aligned. A limiting pin (302) is fixedly mounted at the outer end of the crank arm (301). The intermittent shaft (305) is fixedly fitted with an intermittent disc (309) at its front end. The outer ring surface of the intermittent disc (309) is alternately provided with a number of U-shaped notches (310) and arc-shaped notches (311). The limiting pin (302) can slide into the corresponding U-shaped notch (310) and rotate the intermittent disc (309). The limiting turntable (303) can be inserted into the corresponding arc-shaped notch (311) during rotation.

4. The forming and manufacturing apparatus for screw production according to claim 3, characterized in that: Each of the stamping bases (400) has an inverted T-shaped groove in the middle of its bottom surface. The depth of the four inverted T-shaped grooves increases sequentially according to the stamping stage of the screw (204). A tension spring (409) is fixedly installed at the top of each inverted T-shaped groove. A stamping head (410) is fixedly installed at the bottom of each tension spring (409). The shape of the bottom of the four stamping heads (410) changes sequentially according to the stamping requirements of the screw (204).

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