CN114083491A

CN114083491A - Spring mounting equipment

Info

Publication number: CN114083491A
Application number: CN202111474164.4A
Authority: CN
Inventors: 潘俐; 邵文宇; 董淑文
Original assignee: Hangzhou Yinhu Mechanical Spring Co ltd
Current assignee: Hangzhou Yinhu Mechanical Spring Co ltd
Priority date: 2021-12-06
Filing date: 2021-12-06
Publication date: 2022-02-25
Anticipated expiration: 2041-12-06
Also published as: CN114083491B

Abstract

The invention belongs to the field of spring installation, and particularly relates to spring installation equipment which comprises an impact mechanism, a switching mechanism, a nailing mechanism and a pressing mechanism, wherein the switching mechanism matched with the impact mechanism is installed at the tail end of the impact mechanism in the prior art; according to the invention, firstly, a plurality of U-shaped nail needles are uniformly fixed on a wooden working surface along the circumferential direction of a spring to be installed through a nailing mechanism in impact transmission with an impact mechanism, so that a nail is inserted into the wooden working surface in an n-shaped arch shape, after the tail end of the spring is rotated and inserted into all the U-shaped nail needles uniformly distributed in the circumferential direction, the hoop and a circle of U-shaped nail needles at the tail end of the spring are further jacked towards the wooden working surface through a gap on the spring through a pressing mechanism in impact transmission with the impact mechanism, so that the tail end of the spring is tightly fixed on the wooden working surface through the U-shaped nail needles, and the installation and the fixation of the spring in the wooden structure are completed.

Description

Spring mounting equipment

Technical Field

The invention belongs to the field of spring installation, and particularly relates to spring installation equipment.

Background

In the design process of many mechanical structures, it is often necessary to verify the performance or operation of the mechanical structures by using an equal-proportion mechanical structure made of low-cost materials such as wood, and if a wooden verification mechanical structure is provided with a spring component, the spring installation efficiency of the spring on the verification structure can be greatly reduced if the spring is still installed and fixed by using the traditional steel structure such as punching, welding and bolt-on-board lamp.

Aiming at the characteristic that a wooden structure is easy to process, the invention designs the spring mounting equipment so that the mounting and fixing of the compression spring in the verification mechanical structure are simpler.

Disclosure of Invention

In order to solve the defects in the prior art, the invention discloses spring mounting equipment which is realized by adopting the following technical scheme.

In the description of the present invention, it should be noted that the terms "inside", "outside", "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention conventionally use, which are merely for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, or be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

A spring mounting device comprises an impact mechanism, a switching mechanism, a nailing mechanism and a pressing mechanism, wherein the switching mechanism matched with the impact mechanism is mounted at the tail end of the impact mechanism in the prior art; the tail end of the switching mechanism is provided with a nailing mechanism for nailing the U-shaped nail into the working surface and a pressing mechanism for pressing the U-shaped nail which is not completely nailed into the working surface and clamps the end part of the spring; the switching mechanism transmits the impact of the impact mechanism to the nailing mechanism or the pressing mechanism, and switches the impact transmission between the nailing mechanism and the impact transmission between the pressing mechanism and the impact mechanism.

The nailing mechanism comprises a shell B, U A, an insert rod and a U seat B, wherein the shell B for mounting the U-shaped nail inside is provided with a through nail outlet groove which is matched with the switching mechanism and nails the single U-shaped nail into the working surface; a U seat A sliding along the direction parallel to the working surface and a U seat B sliding along the direction vertical to the working surface are arranged in a chute C surrounding the outer side of the shell B; two inserted bars symmetrically arranged on the end wall of the U seat A are respectively matched with two slots on the end wall of the U seat B, so that the U seat B is fixed along the position in the direction vertical to the working surface.

The pressing mechanism comprises a shell C, a translation block, a trapezoidal sliding strip, a pressing lath and a spring B, wherein the translation block matched with the switching mechanism slides in the shell C in a translation mode along a plane vertical to the working surface; the shell C is internally provided with a structure for resetting the translational motion of the translational block; a trapezoidal sliding strip slides in the trapezoidal guide groove on the translation block along the direction parallel to the working surface, and the tail end of the trapezoidal sliding strip is provided with a pressing plate strip matched with the top of a U-shaped nail pin which is not completely nailed into wood and clamps the end part of an installed spring; and a spring B for resetting the trapezoidal slide bar is installed on the translation block.

As a further improvement of the technology, the switching mechanism comprises a shell a, impact columns and a spring a, wherein the impact columns slide in two through chutes B on the shell a along a direction perpendicular to the working surface, and the two impact columns are respectively matched with an impact block which rotates and swings on an impact head of the impact mechanism; each impact column is nested with a spring A for resetting the impact column; an impact plate arranged at the tail end of one impact column is matched with a nail outlet groove on the shell B, and the tail end of the other impact column is matched with a translation block in the pressing mechanism;

as a further improvement of the technology, the impact mechanism is provided with a handle which is convenient to grasp and a switch button for starting the operation of the handle; the impact head is rotatably matched with a ring sleeve with the diameter smaller than the distance between the two impact columns, so that the ring sleeve and the two impact columns are prevented from acting simultaneously. The circular ring arranged on the impact head rotates in the circular groove A on the inner wall of the ring sleeve. The matching of the circular ring and the annular groove A ensures that only relative rotation motion is generated between the ring sleeve and the impact head. The impact block is arranged on the side wall of the ring sleeve, a manual driving lever is arranged on the side wall of the impact block, and the driving lever is matched with a swing groove on the side wall of the shell A and sliding grooves A at two ends of the swing groove.

As a further improvement of the present technology, the spring a is a compression spring; the spring A is positioned in the ring groove B on the inner wall of the corresponding sliding groove B; one end of the spring A is connected with the inner wall of the corresponding ring groove B, and the other end of the spring A is connected with a pressure spring ring arranged on the corresponding impact column; the top of the housing C has an impact hole for passing a corresponding impact post.

As a further improvement of the technology, two guide blocks A are symmetrically arranged on the inner side of the U seat A, and the two guide blocks A respectively slide in two guide grooves A on the side wall of the sliding groove C. The cooperation of guide block A and guide way A plays the location guide effect to the slip of U seat A in spout C. Two guide blocks B are symmetrically arranged on the inner wall of the U seat B and respectively slide in two guide grooves B on the side wall of the sliding groove C. The guide block B is matched with the guide groove B to play a positioning and guiding role in the sliding of the U seat B in the sliding groove C. The surface of the abutting-pressing lath, which is matched with the top of the U-shaped nail needle, is an inward concave cambered surface, so that the U-shaped nail needle is ensured to form a covering state on the end part of the installed spring under the action of the abutting-pressing lath, and the U-shaped nail is effectively fixed on the end part of the spring.

As a further improvement of the technology, one end of the spring B is connected with a pulling and pressing plate arranged at one end of the trapezoidal slide bar, and the other end of the spring B is connected with the side end of the translation block. The translation block and the inner side wall perpendicular to the working surface on the shell C form a parallelogram four-bar linkage through two pairs of connecting bars which are symmetrically distributed in parallel, so that the translation block is ensured to complete translation motion in the shell C. Two plate springs for resetting the translation block are symmetrically arranged in the shell C; one end of each plate spring is connected with the corresponding side connecting rod, and the other end of each plate spring is connected with the inner wall of the shell C.

Compared with the traditional equipment for installing the spring on the wooden structure, the nailing mechanism in impact transmission with the impact mechanism uniformly fixes a plurality of U-shaped nails on the wooden working surface along the circumferential direction of the spring to be installed, so that the nail insertion and the U-shaped nails on the wooden working surface form an n-shaped arch, after the tail end of the spring is rotated and inserted into all the U-shaped nails uniformly distributed in the circumferential direction, the pressing mechanism in impact transmission with the impact mechanism further presses the hoop sleeve and a circle of U-shaped nails at the tail end of the spring towards the wooden working surface through a gap on the spring, so that the tail end of the spring is tightly fixed on the wooden working surface by the U-shaped nails to complete the installation and fixation of the spring in the wooden structure.

Compared with the traditional spring mounting mode of matching the electric welding and the bolt with the wrapping plate, the spring mounting device has higher mounting efficiency on the spring and has good use effect. In addition, the pneumatic setting nail gun can play the same function as the traditional pneumatic setting nail gun when the spring is not installed, so that the pneumatic setting nail gun is fully utilized, and the utilization rate of the pneumatic setting nail gun is improved. The invention has simple structure and better use effect.

Drawings

Fig. 1 is an overall schematic view of the present invention.

FIG. 2 is a schematic cross-sectional view of the striking mechanism, the switching mechanism, the nailing mechanism and the pressing mechanism.

FIG. 3 is a schematic cross-sectional view of the bushing, impact block, and toggle.

Fig. 4 is a schematic cross-sectional view of the switching mechanism.

Fig. 5 is a schematic cross-sectional view of the housing a.

Fig. 6 is a schematic cross-sectional view of the hold-down mechanism and its components.

FIG. 7 is a schematic view of the trapezoidal shaped slide in cooperation with the hold-down bar.

Fig. 8 is a schematic cross-sectional view of the housing C, the translation block, and the linkage in cooperation.

FIG. 9 is a schematic view of the nailing mechanism.

FIG. 10 is a cross-sectional view of the nailing mechanism from two viewing angles.

Fig. 11 is a partial schematic view of the housing B.

FIG. 12 is a schematic view of a U seat A and a U seat B.

Number designation in the figures: 1. an impact mechanism; 2. a grip; 3. a switch button; 4. an impact head; 5. a circular ring; 6. sleeving a ring; 7. a ring groove A; 8. an impact block; 9. a deflector rod; 10. a switching mechanism; 11. a housing A; 12. a chute A; 13. a chute B; 14. a ring groove B; 15. an impact column; 16. a spring A; 17. a compression spring ring; 18. an impact plate; 19. a nailing mechanism; 20. a housing B; 21. a chute C; 22. a guide groove A; 23. a guide groove B; 24. a nail outlet groove; 25. a U seat A; 26. a guide block A; 27. inserting a rod; 28. a U seat B; 29. a slot; 30. a guide block B; 31. a hold-down mechanism; 32. a housing C; 33. an impingement hole; 34. a translation block; 35. a trapezoidal guide groove; 36. a trapezoidal slide bar; 37. pressing the lath; 38. pulling the pressing plate; 39. a spring B; 40. a connecting rod; 41. a plate spring; 42. and (5) swinging the groove.

Detailed Description

The drawings are schematic illustrations of the implementation of the present invention to facilitate understanding of the principles of structural operation. The specific product structure and the proportional size are determined according to the use environment and the conventional technology.

As shown in fig. 1 and 2, it comprises an impact mechanism 1, a switching mechanism 10, a nailing mechanism 19 and a pressing mechanism 31, wherein as shown in fig. 1 and 2, the switching mechanism 10 matched with the end of the impact mechanism 1 is arranged at the end of the prior art; the tail end of the switching mechanism 10 is provided with a nailing mechanism 19 for nailing the staple into the working surface and a pressing mechanism 31 for pressing the staple which is not completely nailed into the working surface and clamps the end part of the spring; the switching mechanism 10 transmits the impact of the impact mechanism 1 to the nailing mechanism 19 or the pressing mechanism 31, and switches between the transmission of the impact between the nailing mechanism 19 and the impact mechanism 1 and the transmission of the impact between the pressing mechanism 31 and the impact mechanism 1.

As shown in fig. 9 and 10, the nailing mechanism 19 comprises a housing B20, a staple holder a25, an insertion rod 27, and a staple holder B28, wherein, as shown in fig. 2 and 11, a housing B20 for mounting staples therein has a through staple discharging groove 24 which is engaged with the switching mechanism 10 and into which a single staple is driven; as shown in fig. 9, 11 and 12, a sliding groove C21 surrounding the outer side of the shell B20 is provided with a U seat a25 sliding in the direction parallel to the working surface and a U seat B28 sliding in the direction perpendicular to the working surface; the two insertion rods 27 symmetrically arranged on the end wall of the U seat A25 are respectively matched with the two insertion grooves 29 on the end wall of the U seat B28 to realize the position fixing of the U seat B28 in the direction vertical to the working surface.

As shown in fig. 6 and 8, the pressing mechanism 31 includes a housing C32, a translation block 34, a trapezoidal slide bar 36, a pressing bar 37, and a spring B39, wherein as shown in fig. 2, 6, and 8, the translation block 34 engaged with the switching mechanism 10 slides in a translation manner in the housing C32 along a plane perpendicular to the working plane; housing C32 has structure therein to reset the translational movement of translation block 34; as shown in fig. 6, 7 and 8, a trapezoidal sliding strip 36 slides in the trapezoidal guide groove 35 on the translation block 34 along the direction parallel to the working surface, and the tail end of the trapezoidal sliding strip 36 is provided with a pressing plate strip 37 which is matched with the top of a U-shaped nail which is not completely nailed into wood and clamps the end part of the installed spring; translation block 34 is fitted with a spring B39 that returns trapezoidal slide 36.

As shown in fig. 4, the switching mechanism 10 includes a housing a11, a striking post 15, and a spring a16, wherein as shown in fig. 2, 4, and 5, the striking post 15 slides in two through chutes B13 of the housing a11 in a direction perpendicular to the working surface, and the two striking posts 15 are respectively engaged with a striking block 8 that rotates and swings on a striking head 4 of the striking mechanism 1; each impact post 15 is nested with a spring A16 for resetting the impact post; the impact plate 18 arranged at the tail end of one impact column 15 is matched with the nail outlet groove 24 on the shell B20, and the tail end of the other impact column 15 is matched with the translation block 34 in the pressing mechanism 31;

as shown in fig. 1, 2 and 3, the impact mechanism 1 is provided with a grip 2 which is convenient to grasp and a switch button 3 for starting the operation of the grip; the impact head 4 is rotatably matched with a ring sleeve 6 with the diameter smaller than the distance between the two impact columns 15, so that the ring sleeve 6 and the two impact columns 15 are prevented from acting simultaneously. The circular ring 5 installed on the impact head 4 rotates in the ring groove A7 on the inner wall of the ring sleeve 6. The cooperation of the ring 5 and the ring groove a7 ensures that only relative rotational movement is generated between the ring sleeve 6 and the impact head 4. As shown in fig. 2, 3 and 5, the impact block 8 is mounted on the side wall of the ring sleeve 6, the manual shift lever 9 is mounted on the side wall of the impact block 8, and the shift lever 9 is matched with the swing groove 42 on the side wall of the shell a11 and the sliding grooves a12 at two ends of the swing groove 42.

As shown in fig. 2, 4 and 5, the spring a16 is a compression spring; the spring A16 is positioned in a ring groove B14 on the inner wall of the corresponding sliding groove B13; one end of the spring A16 is connected with the inner wall of the corresponding ring groove B14, and the other end of the spring A16 is connected with a pressure spring ring 17 arranged on the corresponding impact column 15; as shown in fig. 2, 6 and 8, the top of the housing C32 has impact holes 33 for passage of the corresponding impact posts 15.

As shown in fig. 10, 11 and 12, two guide blocks a26 are symmetrically mounted inside the U-shaped seat a25, and the two guide blocks a slide in two guide grooves a22 on the side wall of the sliding chute C21. The cooperation of the guide block A26 and the guide groove A22 plays a positioning and guiding role for the sliding of the U seat A25 in the sliding groove C21. Two guide blocks B30 are symmetrically installed on the inner wall of the U seat B28, and the two guide blocks B30 slide in two guide grooves B23 on the side wall of the sliding groove C21 respectively. The cooperation of the guide block B30 and the guide groove B23 plays a positioning and guiding role for the sliding of the U seat B28 in the sliding groove C21. As shown in fig. 6 and 7, the surface of the pressing strip 37, which is engaged with the top of the staple, is an inward concave surface, so that the staple is ensured to form a covering state on the end of the installed spring under the action of the pressing strip 37, and the staple is effectively fixed on the end of the spring.

As shown in fig. 6, the spring B39 is connected at one end to the tension/compression plate 38 mounted at one end of the trapezoidal slide 36 and at the other end to the side end of the translation block 34. As shown in fig. 8, the translation block 34 forms a parallelogram four-bar linkage 40 mechanism with the inner side wall perpendicular to the working surface of the housing C32 through two pairs of parallel symmetrically distributed links 40 to ensure that the translation block 34 performs a translation motion in the housing C32. Two leaf springs 41 for resetting the translation block 34 are symmetrically arranged in the shell C32; each leaf spring 41 is connected at one end to the corresponding side link 40 and at the other end to the inner wall of the casing C32.

The housing B20 of the nailing mechanism 19 of the present invention has a structure for pushing a full row of staple toward the staple discharging slot 24, and the specific structure design thereof refers to the prior art.

The working process of the invention is as follows: in the initial state, the impact block 8 is opposite to the upper end of the impact column 15 provided with the impact plate 18, the shift lever 9 is positioned in the range of the sliding groove A12 at one end of the swinging groove 42, a certain gap is reserved between the impact block 8 and the upper end of the corresponding impact column 15, the two springs A16 are both in a compressed state, and the impact plate 18 is contracted in the corresponding sliding groove B13. The lower end of the impact column 15 opposite to the hold-down mechanism 31 has a certain clearance from the translation block 34. A certain distance is reserved between the U seat A25 and the U seat B28, two inserting rods 27 on the U seat A25 are inserted into corresponding inserting grooves 29 on the U seat B28, the spring B39 is in a natural state, the upper end of the translation block 34 is abutted to the top in the shell C32, the four connecting rods 40 are all in a horizontal state, and the two plate springs 41 are all in a compression state.

When the compression spring is required to be installed on a working surface of a wooden structure by using the invention, the U seat B28 firstly protrudes towards the sliding chute C21 along a direction vertical to the wooden working surface and slides to a limit position, so that the two inserting slots 29 on the U seat B28 are respectively opposite to the two inserting rods 27 on the U seat A25, and then the U seat A25 is pushed to slide towards the U seat B28 direction, so that the two inserting rods 27 are respectively inserted into the two inserting slots 29 on the U seat B28, and the U seat B28 keeps the position state of the lowest end of the protruding shell B20 unchanged.

According to the circumference radius of the compression spring that will install, insert a plurality of circumference evenly distributed's round "arched door" form U type nail through nailing mechanism 19 on wooden work face at the operation spring installation position of wooden work face, the flow that nailing mechanism 19 inserted U type nail to wooden work face is followed:

the U-shaped seat B28 is abutted against the wooden work surface, so that a certain distance is formed between the lower end surface of the housing B20 of the nailing mechanism 19 and the wooden work surface, the distance is slightly larger than the diameter of the steel bar of the installed spring, and the switch button 3 on the impact mechanism 1 is pressed down when one U-shaped nail is nailed. When the switch button 3 is pressed, the impact mechanism 1 is started, the impact mechanism 1 drives the impact block 8 to impact the impact column 15 provided with the impact plate 18 through the impact head 4 and the ring sleeve 6, the impacted impact column 15 drives the impact plate 18 to insert the staple which is ejected into the staple discharging groove 24 onto the wooden working surface instantly, and the staple which is inserted onto the wooden working surface forms an arch door which allows a spring to be installed to be inserted in a rotating mode due to the fact that the shell B20 is supported by the U seat B28 to be at a certain distance from the wooden working surface.

After all the U-shaped nails which are uniformly distributed in the circumferential direction are inserted, the tail ends of the springs to be installed are inserted into the U-shaped nails which are uniformly distributed in the circumferential direction in a rotating mode, and therefore the U-shaped nails in the arch door state form a hoop state for the annular steel bars at the tail ends of the springs to be installed.

After the pressing force of the switch button 3 is removed, the switch mechanism automatically rebounds to the initial state, the impact head 4 of the impact mechanism 1 drives the impact block 8 and the shift lever 9 to axially reset through the ring sleeve 6, and the impact columns 15 provided with the impact plates 18 are respectively and instantly reset under the reset action of the corresponding springs A16.

Then, the shift lever 9 is shifted to swing 180 degrees, and the shift lever 9 drives the impact block 8 and the ring sleeve 6 to rotate and swing 180 degrees relative to the impact head 4 in the impact mechanism 1 to the range of the slide groove A12 at the extreme position, so that the impact block 8 is opposite to the upper end of the impact column 15 without the impact plate 18.

Then, the pressing lath 37 is inserted into the gap of the installed spring and abuts against the top end of the staple, the impact mechanism 1 is started by pressing the switch button 3, the impact head 4 of the impact mechanism 1 drives the pressing mechanism 31 to further press and fix the staple towards the wooden working surface through a series of transmissions, and the pressing process of the pressing mechanism 31 on the staple is as follows:

the switch button 3 on the impact mechanism 1 is pressed to start the impact mechanism 1 again, the impact head 4 of the impact mechanism 1 drives the impact block 8 to impact the impact column 15 without the impact plate 18 through the ring sleeve 6, the deflector rod 9 slides in the corresponding sliding groove A12, the spring A16 for resetting the impact column 15 without the impact plate 18 is further compressed, the impact column 15 instantaneously impacts the translation block 34 through the impact hole 33 on the shell C32, the translation block 34 moves towards the wooden working surface in the shell C32, the translation block 34 drives the pressing lath 37 to be positioned in the concave arc range of the pressing lath 37 through the trapezoidal slide bar 36 and further inserts the U-shaped nail of the hoop sleeve for the tail end of the installed spring towards the wooden working surface, so that the installed spring is tightly pressed and fixed on the wooden working surface by the U-shaped nail needle, and the installation and fixation of the tail end of the spring are realized.

When the translation block 34 drives the pressing strip 37 to move, a parallelogram four-bar 40 mechanism is formed between the translation block 34 and the four-bar 40 and the vertical inner wall of the shell C32, so that the translation block 34 compresses the spring B39 through the pulling and pressing plate 38 while moving in translation towards the wooden working surface, and since the pressing strip 37 tightly presses against the upper end of the U-shaped nail, the pressing strip 37 drives the trapezoidal sliding strip 36 and the translation block 34 to slide relatively, and simultaneously the translation block 34 drives the four-bar 40 to swing synchronously, and the two plate springs 41 are further compressed.

When the acting force on the switch button 3 is removed, the impact mechanism 1 stops running, the impact head 4 of the impact mechanism 1 resets instantly, and the impact head 4 drives the impact block 8 and the deflector rod 9 to reset through the ring sleeve 6. The impact column 15 without the impact plate 18 is instantaneously reset in the shell a11 under the reset action of the corresponding spring a16 and is separated from the translation block 34, the four connecting rods 40 instantaneously drive the translation block 34 to instantaneously reset under the reset action of the two plate springs 41, the translation block 34 drives the abutting-pressing lath 37 to reset through the trapezoidal sliding strip 36 in sliding fit with the translation block, and simultaneously, the trapezoidal sliding strip 36 drives the abutting-pressing lath 37 to instantaneously reset under the reset action of the spring B39.

After the fixed installation of the tail end of the installed spring is finished, the pressing lath 37 is separated from the gap of the installed spring.

While the present invention is no longer used to mount springs to wooden verification structures but is used to perform the same stapling function as a conventional pneumatic stapling gun, firstly, the deflector rod 9 is pulled, the deflector rod 9 drives the impact block 8 to swing back and reset relative to the impact head 4 and is opposite to the upper end of the impact column 15 provided with the impact plate 18, then the U seat A25 is slid to the initial position, so that the two insert rods 27 slide out of the corresponding slide slots and the position locking of the U seat B28 is released, so that the U-shaped seat B28 can be completely inserted into the sliding chute C21 when the shell B20 is pressed against the working face without forming a support for the shell B20 with a distance from the working face, so that the invention drives the staple needles in the nailing mechanism 19 to be completely inserted into the working surface through the impact mechanism 1 and the switching mechanism 10, therefore, the function of the traditional pneumatic nail gun is exerted, the invention is fully utilized, and the utilization rate of the invention is improved.

In conclusion, the beneficial effects of the invention are as follows: according to the invention, firstly, a plurality of U-shaped nail needles are uniformly fixed on a wooden working surface along the circumferential direction of a spring to be installed through a nailing mechanism 19 in impact transmission with an impact mechanism 1, so that a nail is inserted into the wooden working surface to form an n-shaped arch, after the tail end of the spring is rotated and inserted into all the U-shaped nail needles uniformly distributed in the circumferential direction, a pressing mechanism 31 in impact transmission with the impact mechanism 1 further presses a hoop sleeve and a circle of U-shaped nail needles at the tail end of the spring towards the wooden working surface through a gap on the spring, so that the tail end of the spring is tightly fixed on the wooden working surface through the U-shaped nail needles, and the installation and the fixation of the spring in the wooden structure are completed.

Compared with the traditional spring mounting mode of matching the electric welding and the bolt with the wrapping plate, the spring mounting device has higher mounting efficiency on the spring and has good use effect. In addition, the pneumatic setting nail gun can play the same function as the traditional pneumatic setting nail gun when the spring is not installed, so that the pneumatic setting nail gun is fully utilized, and the utilization rate of the pneumatic setting nail gun is improved.

Claims

1. A spring mounting apparatus characterized by: the nailing machine comprises an impact mechanism, a switching mechanism, a nailing mechanism and a pressing mechanism, wherein the switching mechanism matched with the impact mechanism is arranged at the tail end of the impact mechanism in the prior art; the tail end of the switching mechanism is provided with a nailing mechanism for nailing the U-shaped nail into the working surface and a pressing mechanism for pressing the U-shaped nail which is not completely nailed into the working surface and clamps the end part of the spring; the switching mechanism transmits the impact of the impact mechanism to the nailing mechanism or the pressing mechanism and switches the impact transmission between the nailing mechanism and the impact transmission between the pressing mechanism and the impact mechanism;

the nailing mechanism comprises a shell B, U A, an insert rod and a U seat B, wherein the shell B for mounting the U-shaped nail inside is provided with a through nail outlet groove which is matched with the switching mechanism and nails the single U-shaped nail into the working surface; a U seat A sliding along the direction parallel to the working surface and a U seat B sliding along the direction vertical to the working surface are arranged in a chute C surrounding the outer side of the shell B; the two inserting rods symmetrically arranged on the end wall of the U seat A are respectively matched with the two inserting grooves in the end wall of the U seat B, so that the U seat B is fixed along the direction vertical to the working surface;

2. A spring mounting apparatus as claimed in claim 1, wherein: the switching mechanism comprises a shell A, impact columns and a spring A, wherein the impact columns slide in two through chutes B on the shell A along the direction vertical to the working surface, and the two impact columns are respectively matched with an impact block which rotates and swings on an impact head of the impact mechanism; each impact column is nested with a spring A for resetting the impact column; and the tail end of one impact column is matched with a nail outlet groove on the shell B, and the tail end of the other impact column is matched with a translation block in the pressing mechanism.

3. A spring mounting apparatus as claimed in claim 2, wherein: the impact mechanism is provided with a handle convenient to grasp and a switch button for starting the operation of the impact mechanism; the impact head is rotatably matched with a ring sleeve with the diameter smaller than the distance between the two impact columns, and a circular ring arranged on the impact head rotates in a circular groove A on the inner wall of the ring sleeve; the impact block is arranged on the side wall of the ring sleeve, a manual driving lever is arranged on the side wall of the impact block, and the driving lever is matched with a swing groove on the side wall of the shell A and sliding grooves A at two ends of the swing groove.

4. A spring mounting apparatus as claimed in claim 2, wherein: the spring A is a compression spring; the spring A is positioned in the ring groove B on the inner wall of the corresponding sliding groove B; one end of the spring A is connected with the inner wall of the corresponding ring groove B, and the other end of the spring A is connected with a pressure spring ring arranged on the corresponding impact column; the top of the housing C has an impact hole for passing a corresponding impact post.

5. A spring mounting apparatus as claimed in claim 1, wherein: two guide blocks A are symmetrically arranged on the inner side of the U seat A, and the two guide blocks A respectively slide in two guide grooves A on the side wall of the sliding groove C; two guide blocks B are symmetrically arranged on the inner wall of the U seat B and respectively slide in two guide grooves B on the side wall of the sliding groove C; the surface of the pressing lath matched with the top of the U-shaped nail is an inward concave cambered surface.

6. A spring mounting apparatus as claimed in claim 1, wherein: one end of the spring B is connected with a pulling and pressing plate arranged at one end of the trapezoidal sliding strip, and the other end of the spring B is connected with the side end of the translation block; the translation block and the inner side wall vertical to the working surface on the shell C form a parallelogram four-bar linkage through two pairs of connecting bars which are symmetrically distributed in parallel; two plate springs for resetting the translation block are symmetrically arranged in the shell C; one end of each plate spring is connected with the corresponding side connecting rod, and the other end of each plate spring is connected with the inner wall of the shell C.