CN207026387U - Full automatic screw spring transverse direction preformer - Google Patents

Abstract

A fully automatic coil spring transverse precompressor, which belongs to the technical field of spring manufacturing equipment. The fully automatic coil spring transverse precompressor includes: a transverse press device, which is horizontally oppositely provided with a first main hydraulic cylinder and a second main hydraulic cylinder. The first inner hole is arranged in the axial direction of the first piston rod of the main hydraulic cylinder, and the second inner hole is arranged in the axial direction of the second piston rod of the second main hydraulic cylinder; the lifting device is arranged on the lower side of the horizontal pressure device , used to lift the spring workpiece into the horizontal pressure device, or connect the spring workpiece from the horizontal pressure device; the mandrel is axially slidably connected with the first inner hole or the second inner hole, when the lifting device lifts the spring workpiece When lifting and sending into the horizontal pressing device, the mandrel can pass through the inner hole of the spring workpiece to support the spring workpiece. The utility model automatic coil spring transverse pre-pressing machine can automatically lift the spring workpiece to the pre-pressing station, and the working efficiency is relatively high. High and safe.

Description

Fully automatic coil spring transverse preloading machine

technical field

The utility model relates to the technical field of manufacturing vibration damping springs of high-speed EMUs, in particular to a full-automatic helical spring transverse pre-pressing machine.

Background technique

When producing high-stress compression spring products, it is necessary to use pre-compression treatment in the production process to eliminate the residual stress of the spring product, otherwise the spring product will have dimensional deformation after a period of use, which will affect the quality of the spring product.

The wire diameter of the damping spring of the high-speed EMU is large and the weight is heavy, and the load of the pre-pressing machine is relatively high. In the prior art, a vertical hydraulic press is generally used to pre-press the spring. During the pre-pressing process, one or more spring workpieces need to be manually transported to the platform, and then the operator manually operates the hydraulic press for pre-pressing treatment. After the pre-pressing is completed, the operator removes the spring workpieces from the platform. The labor intensity is bigger, and work efficiency is lower.

Chinese patent application CN200910096654.8 discloses a spring pre-pressing machine, which consists of a workbench, a cylinder, and a stopper. The cylinder and the stopper are arranged on the workbench. A telescopic arm is arranged on the cylinder, and a forearm is arranged at the end of the telescopic arm. The size and shape of the forearm are matched with the spring, the stopper is provided with a stopper hole, and the size of the stopper hole matches the spring and the forearm. In this technical solution, the operator is required to manually put the spring workpiece on the forearm, which still has a relatively high labor intensity and low work efficiency for the operator. This technical solution cannot be applied to the preloading of heavy springs, especially for large quantities Preloading of heavy duty springs.

Chinese patent CN201310533338.9 discloses a spring force press, including a workbench and a driving device. The driving device drives a driving disc whose center axis is horizontal. A pressure head is arranged at a position corresponding to a workpiece string. The technical solution of this patent has the following technical problems: 1. It is only suitable for spring preloading with light weight. For heavy springs such as damping springs for high-speed EMUs, free-fall blanking has potential safety hazards. 2. The operator is required to move the spring workpiece, and the spring workpiece is set on the workpiece string rod, which still has the technical problem that the labor intensity of the operator is large.

In summary, it is urgent to design a fully automatic coil spring transverse preloading machine suitable for high-speed EMU spring preloading, which does not require operators to move the spring workpiece to the preloading station and has high work efficiency. technical problem.

Utility model content

The utility model aims at the deficiencies of the prior art, and provides a fully automatic helical spring horizontal pre-pressing machine. The spring workpiece is lifted and sent to the laterally arranged horizontal pressing device through the lifting device. Positioning, the cross-pressing device pre-presses the spring workpiece multiple times. After the pre-pressing is completed, the lifting device takes the workpiece from the cross-pressing device, so that the operator is not required to move the spring workpiece, which improves the automation of the pre-pressing machine and work efficiency.

In order to solve the above problems, the specific embodiment of the utility model proposes a fully automatic coil spring lateral pre-pressing machine, including: a lateral pressing device, a first main hydraulic cylinder and a second main hydraulic cylinder are horizontally oppositely arranged, the first main hydraulic A first inner hole is arranged in the axial direction of the first piston rod of the cylinder, and a second inner hole is arranged in the axial direction of the second piston rod of the second main hydraulic cylinder; It is used to lift the spring workpiece into the horizontal pressing device, or connect the spring workpiece from the horizontal pressing device; the mandrel is axially slidably connected with the first inner hole and/or the second inner hole, when the lifting device lifts the spring workpiece When lifting and sending into the transverse pressing device, the mandrel can pass through the inner hole of the spring workpiece to support the spring workpiece.

According to the above specific implementation of the utility model, it can be seen that the fully automatic coil spring lateral pre-pressing machine has at least the following beneficial effects: the horizontal pressing device is arranged horizontally, the mandrel is penetrated in the piston rod of the main hydraulic cylinder, and when the mandrel is stretched out, the The support and positioning of the spring workpiece is ensured, and the mandrel also has a guiding and supporting effect on the spring workpiece when the spring workpiece is pre-pressed; The above-mentioned horizontal pressing device, or connecting the spring workpiece from the horizontal pressing device, does not require the operator to hold the spring workpiece for installation and positioning, which reduces the labor intensity of the operator and improves work efficiency and safety; the two ends of the main body The first end cover and the second end cover are connected by a guide bar. On the one hand, the guide bar can support the first movable platen and the second movable platen, and on the other hand, it is also used for preloading the spring workpiece by the main hydraulic cylinder. Provide support and withstand tension; the mandrel drive unit can drive the mandrel to reciprocate and linearly move, flexibly realize the support and positioning of the spring workpiece or release the spring workpiece; the synchronization unit is used to correct the synchronization between the first movable platen and the second movable platen, Ensure that when the first movable pressing plate and the second movable pressing plate pre-press the spring workpiece, the spring workpiece is located directly above the top of the lifting device, so that the lifting device can lift the spring workpiece into or take it out of the horizontal pressing device; it is convenient Adaptive adjustment is made according to the diameter and length of the coil spring, and it is suitable for the preloading treatment requirements of coil springs with various diameters and lengths.

It should be understood that the above general description and the following specific embodiments are only exemplary and explanatory, and cannot limit the scope of the present utility model.

Description of drawings

Fig. 1 is the perspective view of an embodiment provided by the specific implementation of the utility model full-automatic coil spring transverse pre-pressing machine;

Fig. 2 is a perspective view of an embodiment provided by the specific implementation of the utility model full-automatic coil spring transverse pre-pressing machine;

Fig. 3 is the right side view of an embodiment provided by the specific implementation of the utility model fully automatic coil spring transverse pre-pressing machine;

Fig. 4 is the A-A cross-sectional view of the embodiment shown in Fig. 3 provided by the specific embodiment of the utility model full-automatic coil spring transverse pre-pressing machine;

Fig. 5 is a front view of an embodiment provided by the specific implementation of the utility model fully automatic coil spring transverse pre-pressing machine;

Fig. 6 is a structural schematic diagram of the second piston rod of an embodiment provided by the specific embodiment of the fully automatic coil spring transverse pre-pressing machine of the present invention;

Fig. 7 is the B-B sectional view of the embodiment shown in Fig. 5 provided by the specific embodiment of the utility model full-automatic coil spring transverse pre-pressing machine;

Fig. 8 is a schematic diagram of the mandrel structure of an embodiment provided by the specific embodiment of the fully automatic coil spring transverse pre-pressing machine of the present invention;

Fig. 9 is a schematic structural diagram of the first limiting unit of an embodiment provided by the specific embodiment of the fully automatic coil spring transverse pre-pressing machine of the present invention;

Fig. 10 is a C-C cross-sectional view of the embodiment shown in Fig. 5 provided by the specific embodiment of the utility model full-automatic coil spring transverse pre-pressing machine;

Fig. 11-Fig. 15 are schematic diagrams of the working process of the feeding device provided by the specific embodiment of the fully automatic helical spring transverse pre-pressing machine of the present invention;

Fig. 16 is a front view of the third limiting unit of an embodiment provided by the specific embodiment of the fully automatic coil spring transverse pre-pressing machine of the present invention;

Fig. 17 is a right view of the third limiting unit of the embodiment shown in Fig. 16 provided by the specific embodiment of the fully automatic coil spring transverse pre-pressing machine of the present invention;

Fig. 18 is a top view of an embodiment provided by the specific implementation of the fully automatic coil spring transverse pre-pressing machine of the present invention;

Fig. 19 is a working flow chart of an embodiment provided by the specific implementation of the fully automatic coil spring lateral preloading method;

Fig. 20 is a working flow chart of the preloading treatment of an embodiment provided by the specific implementation of the fully automatic coil spring lateral preloading method;

Fig. 21 is a schematic diagram of the electrical control principle of an embodiment provided by the specific implementation of the fully automatic coil spring transverse pre-pressing machine of the present invention.

Explanation of reference signs

1-horizontal pressure device,

11-main body, 111-first end cover, 112-second end cover, 113-guide bar, 1131-shaft shoulder, 114-first movable pressure plate, 115-second movable pressure plate, 1141, 1151-hole in pressure plate , 1142, 1152-guide hole, 116-nut,

12-the first main hydraulic cylinder, 121-the first cylinder, 122-the first piston rod, 1221-the first inner hole,

13-second main hydraulic cylinder, 131-second cylinder, 132-second piston rod, 1321-second inner hole, 1322-first rod part, 1323-second rod part, 1324-piston part, 133- end cap,

14-the first limit unit, 141-position transmission rod, 142-the first limit bracket, 1421-the first long slot, 143-the first induction block, 144-set screw, 145-bracket, 146-the first A sensor, 147-the second sensor, 148-the third sensor,

15-spindle drive unit, 151-housing, 152-driver, 153-transmission assembly, 1531-first gear, 1532-second gear, 1533-transmission shaft, 1534-third gear,

16-the second limit unit, 161-the second limit bracket, 162-the fourth sensor, 163-the fifth sensor,

17-mandrel, 171-first cylindrical part, 1711-rack part, 1712-radial protrusion, 172-second cylindrical part;

2-rack,

21-support column, 22-accommodating space;

3- lifting device,

31-workpiece supporting plate, 32-lifting outer cylinder, 33-lifting inner cylinder, 34-lifting drive cylinder, 35-swing drive cylinder,

36-third limit unit, 361-third limit bracket, 3611-vertical section, 3612-transverse connection section, 36111-second long slot, 362-second induction block, 363-sixth sensor, 364- seventh sensor,

37-first pin shaft, 38-second pin shaft,

39-the fourth limit unit,

391, 391 '-the eighth sensor, 392-the ninth sensor, 393-the tenth sensor,

4- Feeding device,

41-feeding plate, 411-pressure contact surface, 412-curved concave surface, 43-return tension spring, 44-cushion block;

5-feeding platform,

50-centering device, 51-platform panel, 511-first groove, 512-second groove,

52-the first centering plate, 53-the second centering plate, 54-the first leading screw, 55-the second leading screw, 56-the first sprocket, 57-the second sprocket, 58-the first chain, 59 - bump;

6-Output platform;

7 - synchronization unit,

71-the third sprocket, 72-the second chain;

8, 8a, 8b-spring workpiece;

9 - Controller.

detailed description

Other objects and advantages of the present invention will become clear by explaining the following preferred embodiments of the present application.

As shown in Figure 1, the fully automatic coil spring horizontal pre-pressing machine mainly includes a horizontal pressing device 1, a frame 2, a lifting device 3, a feeding device 4, a feeding platform 5 and a discharging platform 6; the lower right side in Figure 1 The reference directions of up, down, front, back, left and right are marked in the form of coordinate axes, and the direction descriptions in the following figures are all the same as those marked in Figure 1, where the frame 2 is set on the horizontal The lower side of the device 1 is used to support the horizontal pressing device 1, and a support column 21 is provided on both sides of the frame 2, and the middle of the two support columns 21 is left empty to form an accommodating space 21, and the lifting device 3 is arranged in this accommodating space. Inside space 21. The feeding platform 5 is arranged on the rear side of the frame 2 , and the discharging platform 6 is arranged on the front side of the frame 2 .

As shown in FIG. 2 , a feeding device 4 is provided between the feeding platform 5 and the lifting device 3 , and the feeding device 4 is used to supply spring workpieces 8 to the lifting device 3 .

As shown in Figures 1 to 3, the working process of the automatic coil spring transverse pre-pressing machine is roughly as follows: arrange the spring workpieces 8 to be pre-pressed (hereinafter referred to as workpieces 8) on the feeding platform 5, and roll the workpieces 8 into the On the feeding device 4, the feeding device 4 sends the workpiece 8 into the lifting device 3, and the lifting device 3 lifts the workpiece 8 and sends it to the horizontal pressing device 1. The mandrel 17 passes through the inner hole of the workpiece 8, and the lifting device 3 Exit the horizontal pressing device 1, the workpiece falls on the mandrel 17, the horizontal pressing device 1 pre-presses the workpiece 8 several times, and the lifting device 3 takes the workpiece 8 from the horizontal pressing device 1 and sends it to the discharge platform 6 , to complete the preload.

The detailed structure and working principle of each component are introduced in detail below.

As shown in Figure 1, the lateral pressing device 1 includes a main body 11, a first main hydraulic cylinder 12 and a second main hydraulic cylinder 13 symmetrically arranged on both sides of the main body 11, a first limit unit 14, a spindle driving unit 15, a first Two limiting units 16 and mandrel 17, wherein, the first main hydraulic cylinder 12 and the second main hydraulic cylinder 13 are horizontally oppositely arranged, that is to say, the piston rods of the first main hydraulic cylinder 12 and the second main hydraulic cylinder 13 are both It can protrude toward the center direction of the transverse pressing device 1 for pre-pressing the workpiece 8 .

As shown in Figures 3 and 4, the main body 11 includes a first end cover 111 and a second end cover 112, the first end cover 111 and the second end cover 112 are in the shape of a square disc, the first end cover 111 and the second end cover 112 Each of the four corners has a flange hole. The first end cover 111 and the second end cover 112 are connected by four guide bars 113 . The diameter of the two ends of the guide bar 113 is smaller than the diameter of the middle part to form a shaft shoulder 1131, and the parts with smaller diameters at both ends penetrate into the flange holes of the first end cover 111 and the second end cover 112, and the two shaft shoulders 1131 Respectively against the end surfaces of the first end cover 111 and the second end cover 112 , the two ends of the guide bar 113 are respectively connected with a nut 116 to fix the first end cover 111 and the second end cover 112 .

As shown in Figures 1 and 4, the main body 11 also includes a first movable pressing plate 114 and a second movable pressing plate 115, the first movable pressing plate 114 and the second movable pressing plate 115 are also in the shape of a square disc, the first and second movable pressing plates 114, The center of 115 has pressing plate middle hole 1141,1151 respectively, and the four corners of the first and second movable pressing plates 114,115 are provided with four guide holes 1142,1152, and guide holes 1142,1152 are horizontally slidably connected with guide bar 113.

The first and second movable platens 114 and 115 can support and guide the first and second piston rods 122 and 132 of the first and second master hydraulic cylinders 12 and 13, that is to say, preload the workpiece 8 During processing, if the workpiece 8 deviates from the central axis of the first and second piston rods 122 and 132, then the first and second piston rods 122 and 132 will be subjected to a deflection moment, which is for the first and second piston rods 122 and 132. The piston rod seal of 132 is unfavorable, and the first and second movable pressure plates 114, 115 and the guide bar 113 can be horizontally slidably connected, which can balance the above-mentioned deflection moment, can play a role in protecting the piston rod seal, and prolong the life of the piston rod seal. service life.

As shown in FIG. 4 , the left end of the main body 11 is provided with a first main hydraulic cylinder 12 , and the right end of the main body 11 is provided with a second main hydraulic cylinder 13 , wherein the first main hydraulic cylinder 12 and the second main hydraulic cylinder 13 are arranged symmetrically.

Wherein, the first main hydraulic cylinder 12 includes a first cylinder barrel 121, a first piston rod 122 arranged in the first cylinder barrel 121, the right end of the first cylinder barrel 121 is connected with the left end flange of the first end cover 111, and the second The center of a piston rod 122 has a first axial inner hole 1221 .

The second main hydraulic cylinder 13 includes a second cylinder barrel 131, a second piston rod 132 arranged in the second cylinder barrel 131, the left end of the second cylinder barrel 131 is connected with the right end flange of the second end cover 112, and the second piston The center of the rod 132 has an axial second inner hole 1321 .

The structure of the first piston rod 122 is substantially the same as that of the second piston rod 132. The structure of the second piston rod 132 is used as an example below. As shown in FIG. The left side is the first rod part 1322, and the right side of the piston part 1324 is the second rod part 1323, wherein the first rod part 1322, the second rod part 1323 and the piston part 1324 are coaxially arranged. In addition, the first rod part The dimensions such as diameter and length of 1322 and the second rod part 1323 may be the same or different. The right end of the second cylinder 131 is provided with a tail end cap 133 , and the second rod portion 1323 is sealingly connected with the tail end cap 133 , and passes through the hole of the tail end cap 133 , and extends outward for a section.

As shown in FIG. 4 and FIG. 6 , the first rod part 1322 faces the inner side of the lateral pressing device 1 and is flange-connected with the first and second movable platens 114 and 115; the second rod part 1323 faces the outer side of the lateral pressing device 1 , It is connected with the housing 151 of the spindle drive unit 15 .

As shown in Figure 4, the right end of the second piston rod 132 is connected with the mandrel drive unit 15, the mandrel 17 is arranged in the second inner hole 1321 of the second piston rod 132, the mandrel drive unit 15 can drive the mandrel 17 along the Reciprocate linearly along the second inner hole 1321.

The specific structure of an embodiment of the spindle drive unit 15 is shown in Figure 7, wherein the spindle drive unit 15 includes a housing 151, the housing 151 is connected to the right end flange of the second piston rod 132, the housing 151 The bottom is provided with a driving member 152 , and the driving member 152 is connected to the mandrel 171 through a transmission assembly 153 . Fig. 7 shows a preferred structure of the transmission assembly 153 of an embodiment, the transmission assembly 153 includes a first gear 1531, a second gear 1532, a transmission shaft 1533 and a third gear 1534, specifically, the first gear 1531 and the driving member The output shaft of 152 is connected, the first gear 1531 meshes with the second gear 1532, the second gear 1532 and the third gear 1534 are transmitted through the transmission shaft 1533, the third gear 1534 is transmission connected with the core shaft 17, and the two ends of the transmission shaft 1533 are respectively It is connected with the housing 151 bearing.

It should be noted that the driving member 152 may be a hydraulic motor or a servo motor. In addition, the number of teeth of the first gear 1531 and the third gear 1534 is less than the number of teeth of the second gear 1532, so that the transmission assembly 153 can play a deceleration role.

The specific structure of an embodiment of the mandrel 17 is shown in FIG. 8 , wherein the mandrel 17 includes a first cylindrical portion 171 and a second cylinder arranged at the left end of the first cylindrical portion 171 and coaxially connected with the first cylindrical portion 171 Section 172. The lower side of the outer cylindrical surface of the first cylindrical part 171 is axially provided with a rack part 1711, and the right end of the first cylindrical part 171 is provided with a radial protrusion 1712 whose diameter is larger than that of the first cylindrical part 171. The first cylindrical part 171 and The second inner hole 1321 can be linearly slidably connected, and the rack portion 1711 is meshed with the third gear 1534 of the spindle driving unit 15 . The diameter of the second cylindrical portion 172 is smaller than that of the first cylindrical portion 171 , so that it can penetrate into the inner hole of the workpiece 8 and support the workpiece 8 in a horizontal state.

As shown in FIG. 4 , the driving member 152 drives the mandrel 17 to reciprocate linearly along the second inner hole 1321 of the second piston rod 132 through the transmission assembly 153 . The second cylindrical portion 172 of the mandrel 17 can pass through the middle hole 1151 of the pressure plate, the middle hole 1141 of the pressure plate and the first inner hole 1221 of the first piston rod 122 sequentially from right to left.

During the pre-compression process, the center hole 1141 of the first movable platen 114 and the first inner hole 1221 of the first piston rod 122 provide a receiving space for the second cylindrical portion 172 of the mandrel 17 .

As shown in Figure 5, in order to enable the first end cap 111 and the second end cap 112 to move inwards/outwards synchronously, the utility model also provides a synchronous unit 7 of an embodiment, the synchronous unit 7 includes a third The sprocket 71 and the second chain 72, wherein the third sprocket 171 is pivotally connected with the first end cover 111, the second chain 72 goes around the third sprocket 71, and one end of the second chain 72 is connected with the first movable platen 114 connected, and the other end is connected with the second movable platen 115.

As shown in Figure 5, when the first piston rod 122 of the first master hydraulic cylinder 12 pushes the first movable platen 114 to move toward the center of the lateral pressing device 1, the first movable platen 114 pulls the second chain 72, and the second chain 72 Change the direction on the third sprocket 71, pull the second movable platen 115 and move to the center of the lateral pressing device 1 synchronously. Similarly, when the second piston rod 132 of the second master hydraulic cylinder 13 pulls the second end cover 112 to move to the right, the second chain 72 can pull the first movable platen 114 to move to the left.

The synchronization unit 7 can correct the synchronization of the telescopic movement of the first piston rod 122 and the second piston rod 132 .

As a further preferred embodiment, the synchronizing unit 7 is divided into two groups, which are arranged symmetrically on the front and rear sides of the main body 11 , which is beneficial to the uniform internal force of the lateral pressing device 1 . The manufacturing cost of the aforementioned synchronizing unit 7 is low, and the synchronization between the first movable platen 114 and the second movable platen 115 is good.

In addition, the synchronizing unit 7 can also be a hydraulic synchronizing valve, which communicates with the oil inlet port and the oil outlet port of the first master hydraulic cylinder 12 and the second master hydraulic cylinder 13 respectively, but the cost of this solution is relatively high.

In order to control the coordination of the movement of each part, the utility model also includes a controller 9, which can be a PLC, an industrial computer, or the like. There are many options for the PLC model, such as Siemens S7-300 and S7-400; the industrial computer can be selected as Advantech IPC-610L and so on.

As shown in Figure 21, the controller 9 communicates with the first sensor 146, the second sensor 147, the third sensor 148, the fourth sensor 162, the fifth sensor 163, the sixth sensor 363, the seventh sensor 364, and the eighth sensor 391 respectively. , the ninth sensor 392 and the tenth sensor 393 are connected.

As shown in FIG. 21 , the controller 9 is connected with the first master hydraulic cylinder 12 , the second master hydraulic cylinder 13 , the lifting drive cylinder 34 and the swing drive cylinder 35 through a hydraulic system. In addition, when the driving member 152 is a hydraulic motor, the controller 9 is connected to the hydraulic motor through a hydraulic system; when the driving member 152 is a servo motor, the controller 9 can be directly connected to the servo motor, by controlling the direction of rotation and the number of revolutions of the servo motor To control the moving direction and position of the mandrel 17.

As shown in Figure 1, Figure 5 and Figure 9, in order to facilitate the control of the inward and outward limit positions of the first movable platen 114 and the second movable platen 115, the utility model also provides a first limiting unit of an embodiment 14. Specifically, the first limit unit 14 includes a position transmission rod 141 and a first limit bracket 142 . As shown in FIG. 5 , the left end of the position transmission rod 141 is connected with the second movable platen 115 by screws. When the second movable platen 115 reciprocates left and right, the position transmission rod 141 moves left and right along with the second movable platen 115 . Preferably, a bracket 145 is provided on the second end cover 112, and the bracket 145 is used to support the position transmission rod 141, so that when the position transmission rod 141 moves left and right, the position transmission rod 141 is always kept in a horizontal state. As shown in Figure 5, the left end of the first limit bracket 142 is connected with the second end cover 112 by screws, the first limit bracket 142 is provided with a first long groove 1421, the first sensor 146, the second sensor 147 and the second The three sensors 148 all pass through the first long slot 1421, and the first, second and third sensors 146, 147, and 148 external threads are respectively provided with two nuts, and the first, second and second sensors can be connected by the two above-mentioned nuts. The three sensors 146, 147, 148 are respectively fixed on the first limit bracket 142, and the first, second and third sensors 146, 146, 148 and 148 can also be adjusted along the first long groove 1421 according to the preloading requirements of workpieces 8 of different lengths. 147, 148 positions.

As shown in Figure 9, the first, second and third sensors 146, 147, 148 have different functions, the first sensor 146 is used to indicate the left limit position of the second movable platen 115; the third sensor 148 is used to indicate The right limit position of the second movable pressing plate 115, and the second sensor 147 is positioned between the first sensor 146 and the third sensor 148, adjusts the position according to the length of the workpiece 8, and indicates that the second movable pressing plate 115 presses the workpieces 8 together. s position.

Specifically, as shown in FIGS. 5 and 9 , when the second movable platen 115 moves toward the center of the lateral pressing device 1 , the position transmission rod 141 moves to the left along with the second movable platen 115 , and the second movable platen 141 on the position transmission rod 141 moves to the left. An induction block 143 also moves to the left, and when the second sensor 147 detects the first induction block 143, it sends a signal to the controller 9, and the controller 9 controls the first master hydraulic cylinder 12 and the second master hydraulic cylinder 12 through the hydraulic system. The piston rod of the cylinder 13 stops moving, and after keeping for several seconds, the controller 9 controls the piston rods of the first master hydraulic cylinder 12 and the second master hydraulic cylinder 13 to retract through the hydraulic system, and then drives the second movable platen 115 to move to the right.

If the second sensor 147 fails, the second movable platen 115 continues to move to the left, the first sensor 146 can detect the first sensing block 143, the first sensor 146 sends a signal to the controller 9, and the controller 9 passes the hydraulic pressure The system controls the first master hydraulic cylinder 12 and the second master hydraulic cylinder 13 to stop moving or move to the right, and also controls the alarm device to give an alarm.

In addition, a pressure sensor (not shown in the figure) can also be set in the hydraulic system, and the pressure sensor is used to detect the pressure in the oil supply line of the first master hydraulic cylinder 12 and/or the second master hydraulic cylinder 13, if The pressure in the oil supply pipeline detected by the pressure sensor suddenly rises. At this time, the workpiece 8 is pressed together, and a pressure signal can be sent to the controller 9. The controller 9 controls the first master hydraulic cylinder after a delay of several seconds. 12 and the piston rod of the second master hydraulic cylinder 13 are retracted, driving the second movable platen 115 to move to the right.

During the movement of the second movable platen 115 to the right, when the third sensor 148 detects the first sensing block 143, the third sensor 148 sends a signal to the controller 9, and the controller 9 controls the The piston rods of the first master hydraulic cylinder 12 and the second master hydraulic cylinder 13 return or stop.

It should be noted that the aforementioned position transmission rod 141 can also be arranged on the first movable platen 114. At this time, the first limit bracket 142 is also correspondingly arranged on the first end cover 111. The position and connection relationship are the same as those of the position transmission rod. 141 is symmetrical when it is arranged on the second movable platen 115 .

As a preferred embodiment, as shown in FIG. 9 , the position transmission rod 141 is also provided with a first induction block 143 with adjustable left and right positions. Specifically, the first induction block 143 is provided with a through hole through which the position transmission rod 141 passes. Through the through hole, a set screw 144 is provided on the lower side of the first sensing block 143 , and the front end of the set screw 144 abuts against the position transmission rod 141 . When the set screw 144 is loosened, the position of the first induction block 143 can be adjusted along the position transmission rod 141. After the adjustment is completed, the relative position of the position transmission rod 141 and the first induction block 143 can be fixed by tightening the set screw 144 . By adjusting the relative position of the first induction block 143 relative to the position transmission rod 141 , the preloading requirements of the workpiece 8 with different specifications (mainly the length of the spring workpiece) can also be met.

As shown in Figure 5, in order to be able to control the left and right limit positions of the mandrel 17, this embodiment is also provided with a second limiting unit 16, the second limiting unit 16 includes a second limiting bracket 161, a fourth sensor 162 and a second limiting bracket 162. The fifth sensor 163, the left end of the second limit bracket 161 is connected to the housing 151 of the spindle drive unit 15, the fourth sensor 162 and the fifth sensor 163 are fixed on the second limit bracket 161 at a certain distance. The fourth sensor 162 and the fifth sensor 163 are preferably proximity sensors, which can detect the position of the mandrel 17 by detecting the radial protrusion 1712 at the end of the mandrel 17 . In the technical solution shown in Figure 5, when the fourth sensor 162 detects the radial protrusion 1712, the mandrel 17 is at the left limit position; when the fifth sensor 163 detects the radial protrusion 1712, the core The shaft 17 is in the right extreme position.

As shown in Figure 10 and Figure 11, the present embodiment also provides a lifting device 3 with a preferred structure, the lifting device 3 includes a workpiece pallet 31, a lifting outer cylinder 32 and a lifting inner cylinder 33, wherein the lifting outer cylinder 32 The bottom is connected with the frame 2, and the lifting inner cylinder 33 and the lifting outer cylinder 32 can be slid up and down. The plane perpendicular to the central axis of the first pin shaft 37 can swing within a certain angle range.

It should be noted that the width of the front and rear directions of the workpiece carriage 31 is smaller than the minimum distance between the outer contours of the two guide bars 113 on the lower side of the horizontal pressing device 1, so that the workpiece pallet 31 can enter the horizontal pressing device 1 when it is raised. Inside.

The lifting drive cylinder 34 provides power for the workpiece pallet 31 to lift up and down, and the swing drive cylinder 35 provides power for the swing of the workpiece pallet. Wherein, the lower end of the cylinder barrel of the lifting drive cylinder 34 is connected with the frame 2 or the lifting outer cylinder 32, and the top end of the piston rod of the lifting drive cylinder 34 is rotatably connected with the first pin shaft 37; The barrel 33 is pivotally connected, and the top of the piston rod of the swing drive cylinder 35 is connected to the bottom side of the workpiece supporting plate 31 through a second pin shaft 38 .

The piston of the lifting drive cylinder 34 has two positions, the upper limit position and the lower limit position, as shown in Figures 10, 16 and 17, the top of the lifting inner cylinder 33 is connected with the third limit bracket 361, and the third limit position The bracket 361 has a vertical section 3611 and a horizontal connecting section 3612 connected with the lifting inner tube 33 , and a second long slot 36111 is provided on the vertical section 3611 . The second long slot 36111 is provided with a second sensing block 362, and the second sensing block 362 and the second long slot 36111 can be connected by bolts and nuts, so as to facilitate the adjustment of the height of the second sensing block 362. This embodiment also includes a sixth sensor 363 and a seventh sensor 364 connected to the frame 2, both of which are preferably proximity sensors, wherein the sixth sensor 363 is used to detect the transverse connecting section 3612, and the seventh sensor 364 is used to detect the second Induction block 362 .

The piston rod of the swing driving cylinder 35 has three states: extended state, intermediate state and retracted state. When the piston rod of the swing driving cylinder 35 is in the middle state, the workpiece supporting plate 31 is in a horizontal state; State: when the piston rod of the swing drive cylinder 35 is in the extended state, the workpiece pallet 31 is inclined to the discharge platform 6 side, and is in the discharge state.

As shown in Figures 10 and 11, the present embodiment can also include a feeding device 4 of a preferred structure, the feeding device 4 is located between the feeding platform 5 and the lifting device 3, and the feeding device 4 includes a feeding plate 41. The upper side of the feeding plate 41 has an arc-shaped concave surface 412. On the side of the arc-shaped concave surface 412 facing the lifting device 3, an upwardly inclined pressing contact surface 411 is provided. The lower side of the feeding plate 41 is pivoted to the frame 2. Connection, feeding plate 42 is also provided with reset extension spring 43 near the side of feeding platform 5, and one end of reset extension spring 43 is connected with feeding plate 42, and the other end is connected with frame 2.

As shown in Figure 10, a cushion block 44 is also provided near the end of the return tension spring 43 on the lower side of the feeding plate 41, the cushion block 44 is connected with the frame 2, and when the workpiece supporting plate 31 does not touch the pressing contact surface 411, The spacer 44 supports the feeding plate 41 in a horizontal state.

As a preferred embodiment, as shown in FIG. 21 , a fourth limit unit 39 is further included, and the fourth limit unit 39 includes an eighth sensor 391 , a ninth sensor 392 and a tenth sensor 393 .

The working principles of the lifting device 3 and the feeding device 4 are shown in Figures 11 to 15, and their working process will be described in detail below.

As shown in FIG. 11 , the workpiece 8 a is located on the arc-shaped concave surface 412 of the feeding plate 41 , and the piston rod of the lifting drive cylinder 34 is retracted downward.

As shown in Figure 12, the piston rod of the lifting drive cylinder 34 retracts to the lower limit position (the edge of the workpiece supporting plate 31 is in contact with the pressure-contact surface 411 of the feeding plate 41, or is positioned at the upper side of the pressure-contact surface 411 and is in contact with the pressure-contact surface 411). close to each other), the piston rod of the lifting drive cylinder 34 stops moving. At this time, the workpiece supporting plate 31 is in a horizontal state; the ninth sensor 392 is connected with the frame 2, and is used to detect the above-mentioned workpiece supporting plate 31 in a horizontal state ( FIG. 5 also shows the position of the ninth sensor 392, which is located on the right side of the workpiece support plate 31). When the ninth sensor 392 detects the workpiece supporting plate 31 , the ninth sensor 392 sends a signal to the controller 9 that the workpiece supporting plate 31 is in a horizontal state.

As shown in Figure 13, the piston rod 35 of the swing drive cylinder 35 is retracted to drive the workpiece supporting plate 31 to rotate, and the edge of the workpiece supporting plate 31 is in contact with the pressure-contact surface 411 and presses one side of the feeding plate 41 to rotate, with this Simultaneously, the other side of feeding plate 41 is tilted up, and back-moving spring 43 is elongated, and feeding plate 41 is tilted toward workpiece supporting plate 31 side, and workpiece supporting plate 31 is in feeding state, and workpiece 8a is lifted from feeding plate 41. Roll onto the workpiece pallet 31. The eighth sensor 391 is connected with the frame 2, and is used to indicate that the workpiece supporting plate 31 rotates to the limit position toward the feeding plate 41 side. The eighth sensor 391 can be arranged on the lower side of the feeding plate 41. When the feeding plate 41 When being pressed down by the workpiece supporting plate 31, the eighth sensor 391 can detect the feeding plate 41 and send a signal to the controller 9. After the controller 9 receives the signal, the piston rod of the swing hydraulic cylinder 35 is controlled by the hydraulic system to stop moving. In addition, the eighth sensor 391' can also be arranged on the lower side of the end of the workpiece pallet 31 close to the feeding plate 41, and the above-mentioned function can also be realized by detecting the position of the workpiece pallet 31.

As shown in FIG. 14 , the piston rod of the swing driving cylinder 35 is in the middle state, and the workpiece supporting plate 31 is in the horizontal state. The piston rod of the lifting drive cylinder 34 stretches out upwards to drive the workpiece supporting plate 31 to move upwards, and the workpiece 8a is lifted into the horizontal pressing device 1 for pre-compression. At the same time, under the elastic force of the return tension spring 43, the feeding plate 41 rotates back to the horizontal state.

As shown in Figure 4, in the lateral pressing device 1, first the mandrel driving unit 15 drives the mandrel 17 to protrude to the inside of the lateral pressing device 1, and the second cylindrical portion 172 of the mandrel 17 passes through the inner hole of the workpiece 8a, Then, the piston rod of the lifting drive cylinder 34 is retracted, the workpiece supporting plate 31 is withdrawn from the horizontal pressing device 1 , and the workpiece 8a stays in the horizontal pressing device 1 under the support of the second cylindrical portion 172 . The first piston rod 122 of the first master hydraulic cylinder 12 pushes the first movable platen 114 to move toward the middle, and at the same time, the second piston rod 132 of the second master hydraulic cylinder 13 also pushes the second movable platen 115 to move toward the middle. The first movable pressing plate 114 and the second movable pressing plate 115 pre-press the workpiece 8a, and the workpiece 8a is pressed together. The movable platens 114, 115 move to the outside to complete a pre-compression.

According to the requirements of the spring preloading process, after several times of preloading, when the first and second movable platens 114, 115 are located on the outside, as shown in Figure 14, the lifting drive cylinder 34 drives the workpiece supporting plate 31 to move upward to move the workpiece 8a Hold up a certain distance, the workpiece 8a is no longer in contact with the mandrel 17, the mandrel drive unit 15 drives the mandrel 17 to withdraw to the outside, and the lifting drive cylinder 34 drives the workpiece supporting plate 31 to move downward to the lower limit position.

As shown in Figure 15, the piston rod of the swing drive cylinder 35 stretches out, pushing the workpiece supporting plate 31 to tilt toward the discharge platform 6, and it is in a discharge state. On the feeding plate 41, the transverse pre-pressing machine enters into the workflow of pre-pressing the workpiece 8b.

Fig. 15 also shows the position of the tenth sensor 393, the tenth sensor 393 can be connected with the lifting inner cylinder 33, also can be connected with the frame 2, the tenth sensor 393 is used for detecting whether the workpiece supporting plate 31 moves to the place in the upper section. In the above-mentioned discharging state, when the tenth sensor 393 detects the workpiece pallet 31, it sends a signal to the controller 9 that the workpiece pallet is in the discharging state, and the controller 9 controls the swing drive cylinder 35 to stop or reverse action through the hydraulic system .

In addition, the tenth sensor 393 may not be provided, but the following technical solution may be used instead. The controller 9 controls the piston rod of the swing drive cylinder 35 to stretch out for a few seconds and then stops. The position of the workpiece supporting plate 31 is controlled by the amount of oil supplied, and this scheme can also realize the above-mentioned functions.

As a preferred embodiment, as shown in Figure 18, the feeding platform 5 also includes a centering device 50. A preferred technical solution of the centering device 50 is that the upper surface of the platform panel 51 of the feeding platform 5 is provided with a second A groove 511 and a second groove 512, wherein, the first leading screw 54 is arranged in the first groove 511, the second leading screw 55 is arranged in the second groove 512; the first leading screw 54 and the second The leading screws 55 are all separated from the middle: one half is a left-handed thread, and the other half is a right-handed thread. As shown in FIG. 10 , the lower sides of the first centering plate 52 and the second centering plate 53 have holes embedded in the first groove 511 and the second groove 512 and engaged with the first lead screw 54 and the second lead screw 55 . Bump 59.

As shown in Figure 18, a first sprocket 56 is provided at the end of the first leading screw 54, a second sprocket 57 is provided at the end of the second leading screw 55, and the first sprocket 56 and the second sprocket 57 is connected by the transmission of the first chain 58. When the first lead screw 54 is rotated, the second lead screw 55 rotates synchronously in the same direction, and then drives the first centering plate 52 and the second centering plate 53 to move synchronously to the inside or outside of the feeding platform 5, thereby different The length center plane of the long workpiece 8 is aligned with the center plane of the horizontal pressing device 1 .

As shown in Figure 19, a fully automatic coil spring lateral preloading method mainly includes the following steps:

S1, the lifting device 3 moves upward from the initial position to lift the spring workpiece 8 into the horizontal pressing device 1;

S2, the mandrel 17 passes through the inner hole of the spring workpiece 8;

S3, the lifting device 3 moves downward and withdraws from the horizontal pressing device 1, and the spring workpiece 8 falls on the mandrel 17;

S4, the transverse pressing device 1 pre-presses the spring workpiece 8;

S5, the lifting device 3 moves upward to lift the spring workpiece 8 for a certain distance;

S6, the mandrel 17 withdraws from the inner hole of the spring workpiece 8;

S7, the lifting device 3 receives the spring workpiece 8 and moves down to the initial position.

As a preferred embodiment, as shown in FIG. 20 , the step of preloading the spring workpiece 8 by the transverse pressing device 1 specifically includes:

S41, the piston rods of the first main hydraulic cylinder 12 and the second main hydraulic cylinder 13 stretch out to press the spring workpiece 8 together;

S42, keep the pressing state for 3 seconds, of course, according to the needs of the pre-pressing process, you can also adjust the length of the holding time, such as 1 second, 2 seconds, 5 seconds, 6 seconds, 8 seconds, 10 seconds, etc.;

S43, the piston rods of the first master hydraulic cylinder 12 and the second master hydraulic cylinder 13 retract.

As a preferred embodiment, the following steps S41-S43 are repeatedly executed multiple times, taking three pressings as an example, specifically,

The piston rods of the first master hydraulic cylinder 12 and the second master hydraulic cylinder 13 are stretched out for the first time, and the spring workpiece 8 is pressed together for the first time;

Keep pressing the state for the first time, such as 3 seconds;

The piston rods of the first master hydraulic cylinder 12 and the second master hydraulic cylinder 13 can be retracted until they are separated from the spring workpiece 8, and it is not necessary to retract completely at this moment;

The piston rods of the first master hydraulic cylinder 12 and the second master hydraulic cylinder 13 are stretched out for the second time, and the spring workpiece 8 is pressed together for the second time;

Keep pressing the state for the first time, such as 3 seconds;

The piston rods of the first main hydraulic cylinder 12 and the second main hydraulic cylinder 13 can be retracted until they are separated from the spring workpiece 8, and it is not necessary to fully retract now;

The piston rods of the first master hydraulic cylinder 12 and the second master hydraulic cylinder 13 are stretched out for the third time, and the spring workpiece 8 is pressed together for the third time;

Keep pressing the state for the first time, such as 3 seconds;

The piston rods of the first master hydraulic cylinder 12 and the second master hydraulic cylinder 13 are fully retracted, and the pre-compression treatment cycle is ended.

The device of the present application has been described in detail with reference to the preferred technical solutions of the present application. However, it should be noted that, without departing from the spirit of the present application, those skilled in the art can make any modifications, Modifications and changes. This application includes the specific embodiments described above and any equivalents thereof.

Claims (9)

1. A kind of 1. full automatic screw spring transverse direction preformer, it is characterised in that including：

   Horizontal pressure device, level are relatively set with the first main hydraulic cylinder and the second main hydraulic cylinder, and the first of first main hydraulic cylinder The first endoporus being axially arranged with piston rod, the second endoporus is axially arranged with the second piston bar of second main hydraulic cylinder；

   Lowering or hoisting gear, located at the downside of the horizontal pressure device, for the lifting of spring workpiece to be sent into the horizontal pressure device, Huo Zhecong The lower spring workpiece is connect on the horizontal pressure device；

   Mandrel, it can be in axial sliding connection with first endoporus and/or the second endoporus, when the lowering or hoisting gear is by the spring work When part lifting is sent into the horizontal pressure device, the mandrel can support the spring work through the endoporus of the spring workpiece Part.
2. 2. full automatic screw spring transverse direction preformer according to claim 1, it is characterised in that the horizontal pressure device includes Main body, first main hydraulic cylinder and second main hydraulic cylinder are symmetrically set in the both ends of the main body；The main body includes the One end cap and the second end cap, first end cap and second end cap are connected by horizontally disposed guiding thick stick；Described first First cylinder barrel of main hydraulic cylinder is connected with first end cap, the second cylinder barrel of second main hydraulic cylinder and second end cap Connection.
3. 3. full automatic screw spring transverse direction preformer according to claim 2, it is characterised in that also including the first activity pressure Plate and the second movable pressing board, first movable pressing board and second movable pressing board are oriented to the horizontally slidable company of thick stick with described Connect, first movable pressing board is connected with the end of the First piston bar of first main hydraulic cylinder, second movable pressing board It is connected with the end of the second piston bar of second main hydraulic cylinder, first movable pressing board, second movable pressing board are equal With pressing plate mesopore.
4. 4. full automatic screw spring transverse direction preformer according to claim 1, it is characterised in that described first, second lives The middle part of stopper rod has the first bar portion, piston portion and the second bar portion being coaxially disposed, and the side of the piston portion is the first bar portion, The opposite side of the piston portion is the second bar portion, and first bar portion is towards the inner side of the horizontal pressure device, second bar portion Towards the outside of the horizontal pressure device；Also include mandrel driver element, the mandrel driver element and the First piston bar or Second bar portion of second piston bar described in person end connection, the mandrel driver element be used for drive the mandrel along First endoporus or second endoporus move back and forth.
5. 5. full automatic screw spring transverse direction preformer according to claim 4, it is characterised in that one section on the mandrel There is axially arranged tooth-strip part on outline；

   The mandrel driver element has actuator and transmission component, and the actuator passes through the transmission component and the rack Portion is connected.
6. 6. full automatic screw spring transverse direction preformer according to claim 3, it is characterised in that also include being symmetrically set in institute The synchronization unit of horizontal pressure device front and rear sides is stated, the synchronization unit includes：

   3rd sprocket wheel, it is pivotally connected with first end cap；

   Second chain, around the 3rd sprocket wheel, one end of second chain is connected with first movable pressing board, and described The other end of two chains is connected with second movable pressing board.
7. 7. full automatic screw spring transverse direction preformer according to claim 3, it is characterised in that also including the first spacing list Member, first position-limiting unit include：

   Position transmission lever, be connected with first movable pressing board or second movable pressing board, the position transmission lever with First movable pressing board or second movable pressing board move horizontally；

   First limiting bracket, it is connected with first end cap or second end cap, first limiting bracket is horizontally disposed with；

   First sensor block, it is connected with the position transmission lever；And

   At least two sensors, it is connected with first limiting bracket, for detecting first sensor block.
8. 8. full automatic screw spring transverse direction preformer according to claim 7, it is characterised in that on first sensor block Provided with through hole, the position transmission lever passes through the through hole, and holding screw is threaded with first sensor block, described tight The front end face for determining screw is butted in the position transmission lever.
9. 9. full automatic screw spring transverse direction preformer according to claim 5, it is characterised in that the mandrel is provided with footpath To lug boss, the horizontal preformer also includes the second position-limiting unit, and second position-limiting unit includes：

   Second limiting bracket, it is connected with the housing of the mandrel driver element；

   4th sensor, on second limiting bracket, for detect the mandrel the radial protrusion portion whether position In left side extreme position；

   5th sensor, on second limiting bracket, for detect the mandrel the radial protrusion portion whether position In right limit position.