CN114226604A

CN114226604A - Automatic tin ring forming device and forming method

Info

Publication number: CN114226604A
Application number: CN202111552657.5A
Authority: CN
Inventors: 宋平
Original assignee: Wuhan Lingyun Photoelectronic System Co ltd
Current assignee: Wuhan Lingyun Photoelectronic System Co ltd
Priority date: 2021-12-17
Filing date: 2021-12-17
Publication date: 2022-03-25

Abstract

The invention discloses an automatic tin ring forming device, which comprises a box body, wherein a cavity is arranged in the box body, a push plate capable of translating relative to the cavity is arranged in the cavity, the push plate is elastically connected with a preforming cutter, a preforming groove is formed in the preforming cutter, a preforming stop lever capable of sliding in the vertical direction of the box body is also arranged in the cavity, a preforming boss is arranged at the bottom of the preforming stop lever, and the preforming groove and the preforming boss are in extrusion fit to extrude a tin wire into a U shape; the preforming groove is matched with a first forming female die fixedly connected with the push plate in a sliding mode, the push plate is further connected with a second forming female die through a connecting rod mechanism, and the connecting rod mechanism is used for driving the second forming female die to move opposite to the first forming female die and extruding the U-shaped tin wire into a ring shape. The invention also discloses a molding method based on the automatic tin ring molding device, which comprises the steps of cutting, preforming, molding and ring implanting. The invention automatically realizes the molding and ring planting of the tin ring and improves the production efficiency.

Description

Automatic tin ring forming device and forming method

Technical Field

The invention relates to the technical field of material forming, in particular to an automatic forming device and a forming method for a tin ring.

Background

For laser welding circuit boards, the traditional welding methods include solder paste welding, automatic wire feeding welding and solder ball welding. For the welding of the contact pin type circuit board, the solder paste for laser welding is special solder paste which has special requirements, and the solder paste has strict requirements on the storage and the use environmental temperature, and the defects of tin explosion, splashing, tin bead, solvent volatilization and the like are easy to occur in the welding process. The automatic wire feeding welding is easy to have the defects of wire sticking, wire floating, wire blocking, wire tip pulling and the like. The defects of poor welding stability and quality consistency and low welding efficiency exist.

At present, a tin soldering process that a tin plate is firstly punched into a tin ring, the tin ring is manually placed on a workpiece needing tin soldering, and then a tin wire is melted on the workpiece by a welding gun is also provided, and the welding quality and the welding efficiency of the process are obviously improved. However, the cost is high, the dependence on the labor is improved, a special flux-dispensing device is additionally required, and the automatic molding of the tin ring and the implantation of the tin ring on the contact pin needing soldering cannot be realized.

Disclosure of Invention

The invention aims to overcome the defects in the prior art, and provides an automatic tin ring forming device and a forming method, which can automatically realize the forming and ring planting of tin rings and improve the production efficiency.

In order to achieve the purpose, the invention provides an automatic tin ring forming device which comprises a box body, wherein a cavity is arranged in the box body, a push plate capable of translating relative to the cavity is arranged in the cavity, the push plate is elastically connected with a preforming cutter, a preforming groove is formed in the preforming cutter, a preforming stop lever capable of sliding in the vertical direction of the box body is further arranged in the cavity, a preforming boss is arranged at the bottom of the preforming stop lever, and the preforming groove and the preforming boss are in extrusion fit to extrude a tin wire into a U shape; the tin wire pre-forming device is characterized in that a first forming female die fixedly connected with the push plate is arranged in the pre-forming groove in a sliding fit mode, the push plate is further connected with a second forming female die through a connecting rod mechanism, and the connecting rod mechanism is used for driving the second forming female die to move opposite to the first forming female die and extruding the U-shaped tin wire into a ring shape.

Further, the preforming groove is arranged at the bottom of the preforming cutter along the translation direction of the preforming cutter, a limiting boss used for positioning tin wires is arranged at the end of an opening of the preforming groove, an inclined plane is arranged above the limiting boss and connected with a vertical limiting surface, the preforming stop lever vertically slides in a sliding barrel fixed on the box body, and the preforming boss and the preforming groove are in extrusion fit and then slide relative to the inclined plane until the outer wall of the lower end of the sliding barrel is in limiting fit with the vertical limiting surface.

Further, the fixed stand that is equipped with in upper end of box, be equipped with the vertical guide ring dabber of placing in the stand, the lower extreme of guide ring dabber is located the position when first shaping die extrudees with the second shaping die, fixedly connected with plants the ring cylinder on the stand, it is connected with the overcoat and plants the ring slider at the guide ring dabber to plant the ring cylinder.

Furthermore, a tin wire feeding hole is formed in the side wall of the box body, and an annular cutter is arranged on the inner wall of the tin wire feeding hole.

Further, preforming cutter fixedly connected with guide bar, guide bar and push pedal sliding fit, the cover is equipped with the second spring on the guide bar, the both ends of second spring respectively with push pedal and preforming cutter fixed connection.

Furthermore, the middle part of the push plate is fixedly connected with a power cylinder, one end of the push plate along the length direction is connected with the connecting rod mechanism, and the other end of the push plate is connected with the first forming female die.

Further, link mechanism includes the push rod with push pedal articulated, the one end of push rod and the one end sliding fit of pendulum rod, it has first spring to be equipped with the spacing boss of spring and overcoat on the push rod, the first spring both ends are spacing with the tip of the spacing boss of spring and pendulum rod, the middle part of pendulum rod is articulated with the fixed stub axle of fixing on the box, the other end of pendulum rod is articulated with second shaping die through the activity round pin axle.

Furthermore, one end of the swing rod is provided with a sliding hole, the other end of the swing rod is provided with a hinge hole, the diameter of the sliding hole is larger than the width of the end part of the push rod, and the hinge hole is a long waist hole.

The invention also provides a molding method using the automatic tin ring molding device, which comprises the following steps:

(1) inserting the tin wire into a tin wire feeding hole, pushing the push plate to enable the limiting boss and the annular cutter to extrude together to cut off redundant parts at two ends of the tin wire;

(2) continuously pushing the push plate to enable the preforming boss to be in limit fit with the preforming groove to extrude the tin wire into a U shape; then the lower end of the preforming boss is abutted against the inclined plane to drive the preforming blocking rod to ascend, so that the U-shaped tin wire is separated from the preforming boss;

(3) continuously pushing the push plate, limiting the preforming cutter, pushing the open end of the U-shaped tin wire to insert into the guide ring mandrel by the first forming female die, and moving relative to the second forming female die to extrude the tin wire into a ring shape;

(4) the ring implanting sliding block is driven to move downwards, the tin ring sleeved on the guide ring mandrel is pushed downwards and falls on the contact pin, and the ring implanting sliding block and the push plate return to the initial position.

The invention has the beneficial effects that: the molding and ring planting of the tin ring are automatically realized, and the production efficiency is improved. According to the invention, the limiting boss and the annular cutter are jointly extruded by pushing the push plate to cut off redundant parts at two ends of the tin wire, the tin wire is extruded into a U shape by limiting and matching the pre-forming boss and the pre-forming groove and then automatically separated from the pre-forming boss, the open end of the U-shaped tin wire is pushed by the first forming female die to be inserted into the guide ring mandrel and moves relative to the second forming female die to extrude the tin wire into an annular shape, and finally the tin ring is pushed out from the guide ring mandrel and falls onto the contact pin, so that the whole cutting, pre-forming, forming and ring implanting processes are automatically and continuously carried out, the forming time is greatly shortened, and the forming efficiency is improved; and all the structures are arranged in the box body, so that the structure is compact.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a front sectional view of the present invention.

Fig. 3 is a top sectional view of the present invention.

Fig. 4 is a bottom sectional view of the present invention.

Fig. 5 is a first schematic view of the preform and form construction of the present invention.

Fig. 6 is a second schematic view of the preforming and forming structure of the invention.

The components in the figures are numbered as follows: 1. a box body; 2. a swing rod; 2.1, a sliding hole; 2.2, hinging holes; 3. fixing a pin shaft; 5. a push rod; 5.1, limiting a boss by a spring; 6. a first spring; 7. A ring-implanting sliding block; 8. a ring planting cylinder; 9. a guide ring mandrel; 10. a column; 11. pre-forming a stop lever; 11.1, pre-forming a boss; 12. a preforming cutter; 12.1, pre-forming a groove; 12.2, limiting bosses; 12.3, inclined plane; 12.4, a vertical limiting surface; 13. a second spring; 14. a guide bar; 15. a pin shaft; 16. pushing the plate; 17. a power cylinder; 18. a first molding female die; 19. A ring-shaped cutter; 20. tin wire; 21. a second forming female die, a sliding cylinder 22, a movable pin shaft 23 and a tin wire feeding hole 24.

Detailed Description

The following detailed description is provided to further explain the claimed embodiments of the present invention in order to make it clear for those skilled in the art to understand the claims. The scope of the invention is not limited to the following specific examples. It is intended that the scope of the invention be determined by those skilled in the art from the following detailed description, which includes claims that are directed to this invention.

As shown in fig. 1 to 6, an automatic tin ring forming device comprises a rectangular box body 1, a cavity is arranged in the box body 1, a push plate 16 capable of sliding relative to the inner wall of the cavity is arranged in the cavity, the push plate 16 is elastically connected with a preforming cutter 12, a preforming groove 12.1 is arranged on the preforming cutter 12, a sliding cylinder 22 is vertically arranged on the box body 1, a preforming stop lever 11 capable of sliding in the vertical direction is further arranged in the sliding cylinder 22, a cylindrical preforming boss 11.1 is arranged at the bottom of the preforming stop lever 11, and the preforming groove 12.1 and the preforming boss 11.1 are in extrusion fit to extrude a tin wire into a U shape; the preforming groove 12.1 is matched with a first forming concave die 18 fixedly connected with the push plate 16 in a sliding mode, the end portion of the first forming concave die 18 is in a semicircular arc shape, the push plate 16 is further connected with a second forming concave die 21 through a connecting rod mechanism, the end portion of the second forming concave die is in a semicircular arc shape, and the connecting rod mechanism is used for driving the second forming concave die 21 to move opposite to the first forming concave die 18 and extrude the U-shaped tin wire into a ring shape.

The side wall of the box body 1 is provided with a tin wire feeding hole 24, and the inner wall of the tin wire feeding hole 24 is provided with an annular cutter 19. Preforming recess 12.1 sets up in the bottom of preforming cutter 12 along preforming cutter 12 translation direction, the opening tip of preforming recess 12.1 is equipped with spacing boss 12.2 that is used for fixing a position the tin silk, the top of spacing boss 12.2 is equipped with inclined plane 12.3, inclined plane 12.3 is connected with vertical spacing face 12.4, preforming pin 11 is vertical slip in the slide cartridge 22 of fixing on box 1, preforming boss 11.1 slides with inclined plane 12.3 relatively after 12.1 extrusion fit with preforming recess, until slide cartridge 22 lower extreme outer wall and the spacing cooperation of vertical spacing face 12.4. Thus, the tin wire firstly enters the inner cavity from the tin wire feeding hole, then the push plate pushes the preforming cutter to enable the limiting boss to be in limiting abutting joint with the tin wire, two ends of the tin wire are cut off under the shearing force of the annular cutter, the residual tin wire is continuously pushed along with the preforming cutter until the residual tin wire is in limiting abutting joint with the preforming boss, the preforming boss extrudes the tin wire to enter the preforming groove, the two ends of the tin wire are bent to form a U shape after being subjected to extrusion force, then the bottom of the preforming boss slides relative to the inclined plane, the preforming boss does not ascend in section to enable the U-shaped tin wire to be separated from the preforming boss, the U-shaped tin wire is still located in the preforming groove, the preforming cutter stops moving when moving to limit with the sliding cylinder, and the preforming cutter is elastically connected with the push plate, and the first forming die is fixedly connected with the push plate, so that the preforming cutter does not move any more when the push plate continues to be pushed, and the first forming female die can push the U-shaped tin wire to move continuously to finish the next forming process. The fine completion of whole device is from feeding, excision preforming to fashioned continuity linking like this, and the station of tin silk is the station that next process begins promptly when each process is accomplished, need not between the process through processes such as transportation, and the inside spatial layout of simplification box has very big improvement fashioned efficiency simultaneously.

Fixed stand 10 that is equipped with in the upper end of box 1, be equipped with the vertical guide ring dabber 9 of placing in the stand 10, the guide ring dabber includes the first dabber of first half and the second dabber of latter half, first dabber diameter is greater than the second dabber, first dabber and stand fixed mounting, the position when second dabber is located first forming die 18 and the extrusion of second forming die 21, the bottom of second dabber is vertical to the contact pin, fixedly connected with plants ring cylinder 8 on the stand 10, it is connected with overcoat and plants ring slider 7 on guide ring dabber 9 to plant ring cylinder 8. In the forming process, the first forming female die drives the U-shaped tin wire to move towards the second forming female die, the second mandrel enters the U-shaped groove of the U-shaped tin wire from the opening end, the arc-shaped groove of the first forming male die is abutted to the bottom of the U-shaped tin wire, the arc-shaped groove of the second forming female die is abutted to the opening end of the U-shaped tin wire, the second forming male die is extruded to be annular under the action of extrusion force, then the ring planting cylinder is started to drive the ring planting sliding block to move downwards, the tin ring is pushed out from the bottom of the second mandrel and falls onto the contact pin, and the ring planting process is completed.

The preforming cutter 12 is fixedly connected with a guide rod 14, the guide rod 14 is in sliding fit with the push plate 16, a second spring 13 is sleeved on the guide rod 14, and two ends of the second spring 13 are respectively fixedly connected with the push plate 16 and the preforming cutter 12. Therefore, in the process of cutting and preforming the tin wire, the push plate always pushes the second spring and the first forming female die, the second spring is pushed to move by restoring force after being compressed, and meanwhile the guide rod slides relative to the push plate. Adopt this kind of elastic connection mode to provide tin silk excision and preforming required top thrust between push pedal and preforming cutter on the one hand, on the other hand can make preforming cutter again can continue to push away in the time of no longer moving after accomplishing preforming still, provides thrust for accomplishing the shaping process.

The middle part of the push plate 16 is fixedly connected with a power cylinder 17, one end of the push plate 16 along the length direction is connected with a connecting rod mechanism, and the other end is connected with a first forming female die 18. Therefore, in the pushing process of the push plate, the reaction forces of the connecting mechanism and the first forming female die can be respectively received, the stress points of the two reaction forces are respectively arranged at the two ends of the length direction of the push plate to play a balance role, the extrusion forces of the push plate 16 and the inner wall of the cavity are distributed along the translation direction in a balanced manner, and the sliding resistance of the push plate is reduced.

The connecting rod mechanism comprises a push rod 5 hinged with a push plate 16 through a pin shaft 15, one end of the push rod 5 is in sliding fit with one end of a swing rod 2, a spring limiting boss 5.1 and a first spring 6 are arranged on the push rod 5 in a sleeved mode, two ends of the first spring 6 are limited with the spring limiting boss 5.1 and the end portion of the swing rod 2, the middle of the swing rod 2 is hinged with a fixed pin shaft 3 fixed on a box body 1, and the other end of the swing rod 2 is hinged with a second forming female die 21 through a movable pin shaft 23. One end of the swing rod 2 is provided with a sliding hole 2.1, the other end of the swing rod is provided with a hinge hole 2.2, the diameter of the sliding hole 2.1 is larger than the width of the end part of the push rod 5, and the hinge hole 2.2 is a long waist hole. Therefore, the pushing direction of the push plate is opposite to the moving direction of the second forming female die, so that the first forming female die and the second forming female die can move oppositely to extrude the U-shaped tin wire, when the swing rod 2 rotates around the middle fixing pin shaft, the two ends of the swing rod move in an arc shape, the push rod and the second forming female die need to move linearly, the two ends of the swing rod cannot be hinged with the push rod and the second forming female die in a fixed mode, the sliding hole is arranged to be larger than the width of the push rod, the hinge hole can move for a certain moving space for a long waist hole, and the two ends of the swing rod can swing in an arc shape when the push rod and the second forming female die move linearly.

The forming and ring-implanting process of the automatic tin ring forming device is as follows:

1. inserting the tin wire into the tin wire feeding hole 24, pushing the push plate 16, and abutting the limiting lug boss 12.2 with the tin wire and extruding the limiting lug boss and the annular cutter 19 together to cut off the redundant parts at the two ends of the tin wire.

2. Continuously pushing the push plate 16 to enable the preforming boss 11.1 to be abutted against the tin wire and drive the tin wire to enter the preforming groove 12.1, and bending and extruding two ends of the tin wire into a U shape; then the lower end of the preforming boss 11.1 is abutted to the inclined plane 12.3, the inclined plane translates to drive the preforming blocking rod 11 to ascend, so that the U-shaped tin wire is separated from the lower end of the preforming boss 11.1, and the U-shaped tin wire is still positioned in the preforming groove.

3. Continuously pushing the push plate 16, wherein the vertical limit surface 12.4 on the preforming cutter 12 is in limit abutting connection with the lower end surface of the sliding barrel 22, the preforming cutter stops moving, the first spring is continuously compressed, so that the push plate can still be continuously pushed, the first forming female die 18 pushes the open end of the U-shaped tin wire to be inserted into the guide ring mandrel 9 and moves relative to the second forming female die 21 to extrude the tin wire into a ring shape;

4. and driving the ring implanting sliding block 7 to move downwards, pushing out the tin ring sleeved on the guide ring mandrel 9 downwards and dropping on the insertion pin, and controlling the ring implanting sliding block 7 and the push plate 16 to return to the initial position.

According to the tin wire feeding and cutting device, the tin wire feeding and cutting structure, the preforming structure, the forming structure and the ring implanting structure are arranged in the narrow box body, the structure is compact, the space arrangement is reasonable, the station of the tin wire is the station at the beginning of the next procedure when each procedure is finished, the adjacent stations are in seamless connection without transfer, and the production efficiency is greatly improved.

Claims

1. The utility model provides a tin ring automatic molding device which characterized in that: the tin wire extrusion molding box comprises a box body (1), wherein a cavity is formed in the box body (1), a push plate (16) capable of translating relative to the cavity is arranged in the cavity, the push plate (16) is elastically connected with a preforming cutter (12), a preforming groove (12.1) is formed in the preforming cutter (12), a preforming stop lever (11) capable of sliding in the vertical direction of the box body (1) is further arranged in the cavity, a preforming boss (11.1) is arranged at the bottom of the preforming stop lever (11), and the preforming groove (12.1) and the preforming boss (11.1) are in extrusion fit to extrude a tin wire into a U shape; a first forming female die (18) fixedly connected with a push plate (16) is arranged in the preforming groove (12.1) in a sliding fit mode, the push plate (16) is further connected with a second forming female die (21) through a connecting rod mechanism, and the connecting rod mechanism is used for driving the second forming female die (21) to move opposite to the first forming female die (18) and extruding the U-shaped tin wire into a ring shape.

2. The automatic tin ring molding device according to claim 1, characterized in that: preforming recess (12.1) sets up in the bottom of preforming cutter (12) along preforming cutter (12) translation direction, the opening tip of preforming recess (12.1) is equipped with spacing boss (12.2) that are used for fixing a position the tin silk, the top of spacing boss (12.2) is equipped with inclined plane (12.3), inclined plane (12.3) are connected with vertical spacing face (12.4), preforming pin (11) is vertical slip in fixing slide cartridge (22) on box (1), preforming boss (11.1) and preforming recess (12.1) extrusion fit back slide with inclined plane (12.3) relatively, until slide cartridge (22) lower extreme outer wall and vertical spacing face (12.4) spacing cooperation.

3. The automatic tin ring molding device according to claim 2, characterized in that: the fixed stand (10) that is equipped with in upper end of box (1), be equipped with vertical guide ring dabber (9) of placing in stand (10), the position when the lower extreme of guide ring dabber (9) is located first shaping die (18) and second shaping die (21) extrusion, fixedly connected with plants ring cylinder (8) on stand (10), it encircles slider (7) to plant ring cylinder (8) and be connected with the overcoat on guide ring dabber (9).

4. The automatic tin ring molding device according to claim 3, characterized in that: the tin wire feeding device is characterized in that a tin wire feeding hole (24) is formed in the side wall of the box body (1), and an annular cutter (19) is arranged on the inner wall of the tin wire feeding hole (24).

5. The automatic tin ring molding device according to claim 4, wherein: preforming cutter (12) fixedly connected with guide bar (14), guide bar (14) and push pedal (16) sliding fit, the cover is equipped with second spring (13) on guide bar (14), the both ends of second spring (13) respectively with push pedal (16) and preforming cutter (12) fixed connection.

6. The automatic tin ring molding device according to claim 4, wherein: the middle part of the push plate (16) is fixedly connected with a power cylinder (17), one end of the push plate (16) along the length direction is connected with a connecting rod mechanism, and the other end of the push plate is connected with a first forming female die (18).

7. The automatic tin ring molding device according to claim 4, wherein: link mechanism include with push pedal (16) articulated push rod (5), the one end of push rod (5) and the one end sliding fit of pendulum rod (2), it has first spring (6) to be equipped with spacing boss of spring (5.1) and overcoat on push rod (5), first spring (6) both ends are spacing with the tip of spacing boss of spring (5.1) and pendulum rod (2), the middle part of pendulum rod (2) is articulated with fixed pin axle (3) of fixing on box (1), the other end of pendulum rod (2) is articulated with second shaping die (21) through activity round pin axle (23).

8. The automatic tin ring molding device according to claim 7, wherein: one end of the swing rod (2) is provided with a sliding hole (2.1), the other end of the swing rod is provided with a hinge hole (2.2), the diameter of the sliding hole (2.1) is larger than the width of the end part of the push rod (5), and the hinge hole (2.2) is a long waist hole.

9. A molding method using the automatic tin ring molding device according to any one of claims 4 to 8, characterized in that:

(1) inserting the tin wire into a tin wire feeding hole (24), pushing a push plate (16) to enable a limiting boss (12.2) and an annular cutter (19) to extrude together to cut off redundant parts at two ends of the tin wire;

(2) continuously pushing the push plate (16) to enable the preforming boss (11.1) to be in limit fit with the preforming groove (12.1) to extrude the tin wire into a U shape; then the lower end of the preforming boss (11.1) is abutted against the inclined plane (12.3) to drive the preforming blocking rod (11) to ascend, so that the U-shaped tin wire is separated from the preforming boss (11.1);

(3) continuously pushing the push plate (16), limiting the preforming cutter (12), pushing the open end of the U-shaped tin wire to be inserted into the guide ring mandrel (9) by the first forming female die (18), and moving relative to the second forming female die (21) to extrude the tin wire into a ring shape;

(4) the ring implanting sliding block (7) is driven to move downwards, the tin ring sleeved on the guide ring mandrel (9) is pushed downwards and falls on the contact pin, and the ring implanting sliding block (7) and the push plate (16) return to the initial position.