An assembly device for a sliding core and a locking tooth plate return spring

Abstract

The present invention discloses an assembly device for a sliding core and a locking tooth plate return spring, comprising a pressing mechanism, a positioning mechanism and an assembly mechanism, wherein the pressing mechanism is used to press the locking tooth plate into the lock tooth of the sliding core; the return spring comprises a spring body and mounting sections at both ends thereof, wherein the mounting section comprises an end and a neck, wherein the end is located at an end of the mounting section away from the spring body, wherein the outer diameter and the inner diameter of the mounting section gradually decrease from the end to the neck and gradually increase from the neck to an end close to the spring body; the assembly mechanism comprises two lever assemblies, wherein each lever assembly comprises a lever, wherein a notch is provided on one side of the lever, and the outer diameter of the end of the lever close to the sliding core is smaller than the inner diameter of the neck; the assembly mechanism is used to assemble an installation section into a corresponding first hole portion. The assembly device of the present invention utilizes the lever to drive the installation section to pass through the second hole portion and move from the second hole portion to the first hole portion, thereby realizing automatic assembly of the return spring, thereby ensuring assembly quality and improving production efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile seat slide rail assembly, and in particular relates to an assembly device for a slide core and a locking tooth plate return spring. Background Art

[0002] The car seat slide rail is composed of a slide core and a slide rail that are nested together. The slide core and the slide rail move relative to each other to adjust the seat position. In addition, the slide rail also includes a locking tooth plate, a locking tooth plate return spring, a guide sleeve, and an unlocking pin. The manual locking and unlocking between the slide core and the slide rail can be achieved through the cooperation between these components.

[0003] With the update of product structure, the structure of the locking tooth plate reset spring has also been changed accordingly. The neck sizes of the two ends of the original locking tooth plate reset spring are different. For example, the Chinese invention patent with application number 201810040038.X and the name of the slide rail and slide rail locking spring assembly device can use the different neck sizes at both ends to stretch from the inside of the reset spring, so as to facilitate assembly. However, such a structure requires error prevention when assembling the reset spring, which increases the difficulty of assembly and the difficulty of spring production. The neck sizes of the two ends of the existing updated locking tooth plate reset spring are the same, which can reduce the difficulty of reset spring production, and there is no need for positive and negative error prevention during assembly. However, such a structure will increase the difficulty of assembly when the spring is installed on the slide core, resulting in the existing assembly device being no longer applicable. At present, the assembly is performed manually using needle-nosed pliers, which takes a long time to assemble and has low production efficiency. In addition, improper operation sometimes easily damages the reset spring, resulting in unqualified assembly quality. Therefore, a new assembly device needs to be developed. Summary of the invention

[0004] In view of this, in order to overcome the defects of the prior art, the purpose of the present invention is to provide an assembly device for a sliding core and a locking tooth plate return spring, which can realize the automatic assembly of the locking tooth plate return spring, not only ensuring the assembly quality but also improving production efficiency.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A device for assembling a sliding core and a locking tooth plate return spring, the sliding core having a lock tooth and two first mounting holes, the locking tooth plate having second mounting holes at both ends, each of the first mounting holes comprising a first hole portion and a second hole portion that are connected, the aperture of the first hole portion being smaller than the aperture of the second hole portion, the center of the second mounting holes on the same side and the center of the first hole portion being in the same vertical direction, the distance between the two second hole portions being greater than the distance between the two first hole portions, the assembly device comprising a clamping mechanism, a positioning mechanism and an assembly mechanism, the clamping mechanism being located above the positioning mechanism and the assembly mechanism, the positioning mechanism being used to place and position the sliding core, and the clamping mechanism being used to clamp the locking tooth plate in the lock tooth of the sliding core;

[0007] The return spring comprises a spring body and mounting sections at both ends of the spring body, each of the mounting sections comprises an end and a neck, the end is located at an end of the mounting section away from the spring body, the outer diameter and the inner diameter of the mounting section both gradually decrease from the end to the neck and gradually increase from the neck to the end close to the spring body;

[0008] The assembly mechanism comprises two lever assemblies corresponding to the two first mounting holes, a first driving assembly for driving the two lever assemblies to move simultaneously in the vertical direction, and a second driving assembly for driving the two lever assemblies to move closer to and / or farther from each other in the horizontal direction, each lever assembly comprises a lever, a notch is provided on one side of the lever, an outer diameter of an end of the lever close to the sliding core is smaller than an inner diameter of the neck; the lever is used to be inserted into the mounting section from an end of the return spring away from the locking tooth plate, and the notch is used to hook the return spring;

[0009] A mounting section of the return spring close to the locking tooth plate is located in one of the second mounting holes, and the assembly mechanism is used to assemble another of the mounting sections into a corresponding one of the first hole portions.

[0010] According to some preferred embodiments of the present invention, the aperture of the first hole portion is smaller than the outer diameter of the end portion and larger than the outer diameter of the neck portion; the outer diameter of the spring body is equal to or larger than the outer diameter of the end portion, and the inner diameter of the neck portion is smaller than the inner diameter of the spring body; the difference between the outer diameter of one end of the lever close to the sliding core and the inner diameter of the neck portion is 0.2~0.3 mm.

[0011] According to some preferred implementation aspects of the present invention, the return spring has a first state, a second state, a third state and a fourth state, the lengths of the return springs in the second state and the third state are greater than the lengths of the return springs in the first state and the fourth state, the length of the return spring in the first state is less than the length of the return spring in the fourth state, the two return springs in the first state and the fourth state are parallel to each other, the two return springs in the second state are obtained by stretching the two return springs in the first state outwards, the two return springs in the third state are obtained by stretching the two return springs in the second state downwards, and the two return springs in the fourth state are obtained by retracting the two return springs in the third state inwards;

[0012] When the return spring is in the first state, the bottom surface of a mounting section away from the locking tooth plate is located on the top surface of the first hole portion; when the return spring is in the second state, the bottom surface of a mounting section away from the locking tooth plate is located on the top surface of the second hole portion; when the return spring is in the third state, a mounting section away from the locking tooth plate is located in the second hole portion; when the return spring is in the fourth state, a mounting section away from the locking tooth plate is located in the first hole portion.

[0013] According to some preferred embodiments of the present invention, one side of the lever is provided with the notch from its outer wall inward to form a first section, a second section and a third section, the second section is located between the first section and the third section, the depth of the notch is smaller than the diameter of the lever, the length of the notch is smaller than the length of the lever, and the first section, the second section and the third section are all arc surfaces.

[0014] According to some preferred embodiments of the present invention, each of the lever assembly further includes a fixed rod fixedly connected to one end of the lever away from the sliding core, and a fixed block fixedly connected to one end of the fixed rod, and the length direction of the fixed rod is parallel to the length direction of the lever and the fixed block; the first driving assembly includes a first fixed plate, a second fixed plate, a first slide rail fixedly arranged on one side of the first fixed plate, a first slider fixedly arranged on one side of the second fixed plate, and a first driver connected to one end of the second fixed plate, the first slider is slidably connected to the first slide rail, the first fixed plate is parallel to the second fixed plate and the slide rail, and the slide rail is parallel to the fixed rod.

[0015] According to some preferred embodiments of the present invention, the second driving assembly includes a third fixed plate, a second slide rail and a third slide rail fixedly arranged on the other side of the second fixed plate, a second slider fixedly arranged on one side of each of the fixed blocks, a third slider fixedly arranged on one side of the third fixed plate, and a second driver connected to one end of the third fixed plate, the second slide rail is located at the top of the second fixed plate, the second driver is close to the bottom of the second fixed plate, the third slide rail is located below the second slide rail and the fixed block and the second slide rail is perpendicular to the third slide rail, and the third slide rail is parallel to the first slide rail; the second slider is slidably connected to the second slide rail, and the third slider is slidably connected to the third slide rail.

[0016] According to some preferred implementation aspects of the present invention, two waist-shaped holes are provided at one end of the third fixing plate away from the second driver, which run through the third fixing plate in its thickness direction, and the two waist-shaped holes are symmetrically and inclinedly arranged, and the distance between the two ends of the waist-shaped holes away from the second driver is greater than the distance between the two ends of the waist-shaped holes close to the second driver; a cam is fixedly arranged on one side of the two fixing blocks close to the third fixing plate, and the waist-shaped hole is used to accommodate the cam, and the outer periphery of the cam is in contact with the inner wall of the waist-shaped hole.

[0017] According to some preferred embodiments of the present invention, the positioning mechanism includes a fourth fixed plate and support seats fixedly arranged at both ends of the top surface of the fourth fixed plate, the fourth fixed plate is provided with a through groove running through its thickness direction, and the through groove is parallel to the second slide rail; the distance between the two support seats is smaller than the length of the slide core, and each of the support seats is provided with a groove downwardly on the top surface, and the groove is used to clamp with the bottom of the slide core.

[0018] According to some preferred embodiments of the present invention, each of the fixing blocks includes a first part and a second part that are connected, the first part is located above the second part, a side of the first part of one of the fixing blocks close to the other fixing block is flush with a side of the second part close to the other fixing block, a width of the first part is smaller than a width of the second part, the through groove is used for allowing the two first parts to pass through, and a length of the through groove is greater than a distance between two side surfaces of the two first parts that are far away from each other and less than a distance between two side surfaces of the two second parts that are far away from each other.

[0019] According to some preferred embodiments of the present invention, the clamping mechanism includes a clamping driver, a first clamping block connected to the clamping driver, a second clamping block located below the first clamping block, and positioning pins fixedly arranged at both ends of the bottom of the second clamping block, an elastic member is arranged between the first clamping block and the second clamping block, one end of the elastic member is fixedly connected to the bottom of the first clamping block, and the other end of the elastic member is fixedly connected to the top of the second clamping block, one end of the two positioning pins extends downward from the bottom surface of the second clamping block, the positioning pins are perpendicular to the sliding core, and the positioning pins are used to insert into an installation section of the reset spring located in the second mounting hole, and the distance between the axial centers of the two positioning pins is equal to the distance between the centers of the two second mounting holes on the locking tooth plate.

[0020] According to some preferred embodiments of the present invention, the first fixing frame and the second fixing frame are further included, the bottom surface of the first fixing frame is fixedly connected to the top surface of the second fixing frame, the clamping mechanism is fixedly arranged on one side of the first fixing frame, the assembly mechanism is fixedly arranged on one side of the second fixing frame, and the clamping mechanism and the assembly mechanism are both located on the same side of the first fixing frame and the second fixing frame; one side of the housing of the clamping driver is fixedly connected to one side of the first fixing frame, and the side of the first fixing plate away from the second fixing plate is fixedly connected to one side of the second fixing frame.

[0021] Compared with the prior art, the advantages of the present invention lie in that: an assembly device for a sliding core and a locking tooth plate return spring of the present invention, through the arrangement and mutual cooperation of a clamping mechanism, a positioning mechanism and an assembly mechanism, can utilize the lever of the assembly mechanism to extend into the mounting section at the bottom of the return spring to stretch it, so that the mounting section can pass through the second hole portion with a larger aperture and move from the second hole portion to the first hole portion, thereby realizing automatic assembly of the return spring on the sliding core and the locking tooth plate, which can not only ensure the assembly quality, but also effectively improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 It is a three-dimensional structural schematic diagram of an assembly device of a sliding core and a locking tooth plate return spring in a preferred embodiment of the present invention;

[0024] Figure 2 It is a three-dimensional structural schematic diagram of an assembly mechanism in a preferred embodiment of the present invention;

[0025] Figure 3 It is a schematic diagram of the three-dimensional structure of the shifting rod and the fixing rod in the preferred embodiment of the present invention;

[0026] Figure 4 It is a schematic diagram of the three-dimensional structure of the return spring in the preferred embodiment of the present invention;

[0027] Figure 5 It is a schematic diagram of the three-dimensional structure of the cooperation between the sliding core, the locking tooth plate and the return spring (one return spring is hidden) in the preferred embodiment of the present invention;

[0028] Figure 6 It is a schematic diagram of the three-dimensional structure of the two levers cooperating with the positioning mechanism when the return spring is in the first state in the preferred embodiment of the present invention;

[0029] Figure 7 It is a schematic cross-sectional structure diagram of the reset spring in the preferred embodiment of the present invention when it is in the first state and cooperates with the locking tooth plate and the sliding core;

[0030] Figure 8 It is a schematic cross-sectional structure diagram of the reset spring in the preferred embodiment of the present invention cooperating with the locking tooth plate and the sliding core when the reset spring is in the second state;

[0031] Fig. 9 It is a schematic cross-sectional structure diagram of the reset spring in the preferred embodiment of the present invention cooperating with the locking tooth plate and the sliding core when the reset spring is in the third state;

[0032] Fig.10 It is a schematic cross-sectional structure diagram of the reset spring in the fourth state cooperating with the locking tooth plate and the sliding core in the preferred embodiment of the present invention;

[0033] Wherein, the accompanying drawings are marked as follows:

[0034] Assembly mechanism-1, lever-11, notch-111, first section-112, second section-113, third section-114, fixed rod-12, first part-131, second part-132, cam-133, first fixing plate-141, second fixing plate-142, first slide rail-151, first slider-152, first driver-161, first fixing seat-162, third fixing plate-17, waist hole-171, second slide rail-181, second slider-182, third slide rail-183, third slider-184, second driver-191, second fixing seat -192, positioning mechanism-2, fourth fixed plate-21, through groove-211, support seat-22, groove-221, first sensor-23, clamping mechanism-3, clamping driver-31, first pressure block-32, second pressure block-33, positioning pin-34, elastic member-35, second sensor-36, first fixed frame-4, second fixed frame-5, sliding core-6, locking tooth-61, first hole portion-621, second hole portion-622, locking tooth plate-7, second mounting hole-71, reset spring-8, spring body-81, mounting section-82, end portion-821, neck-822. DETAILED DESCRIPTION

[0035] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0036] like Figure 5As shown, the car seat slide rail is composed of a slide core 6 and a slideway (not shown) nested together, and relative movement occurs between the slide core 6 and the slideway to achieve the adjustment of the seat position. A locking tooth plate 7, a guide sleeve, an unlocking pin and a reset spring 8 are installed between the slide core 6 and the slideway. Among them, the slide core 6 has a locking tooth 61 and two first mounting holes, and the two ends of the locking tooth plate 7 have second mounting holes 71. The first mounting hole and the second mounting hole 71 are correspondingly arranged, and each first mounting hole includes a first hole portion 621 and a second hole portion 622 that are connected, and the aperture of the first hole portion 621 is smaller than that of the second hole portion 622. The center of the second mounting hole 71 on the same side and the center of the first hole portion 621 are located in the same vertical direction, and the distance between the two second hole portions 622 is greater than the distance between the two first hole portions 621; two return springs 8 are also correspondingly provided, one end of a return spring 8 is installed in a second mounting hole 71, and the other end thereof needs to be installed in a first hole portion 621 of a first mounting hole. This embodiment provides an assembly device for the return spring 8 on the sliding core 6 and the locking tooth plate 7, which can install the other end of the return spring 8 in the first hole portion 621 of the first mounting hole.

[0037] like Figures 1 to 10 As shown, the assembly device of this embodiment includes a clamping mechanism 3, a positioning mechanism 2, an assembly mechanism 1, a first fixing frame 4 and a second fixing frame 5. The bottom surface of the first fixing frame 4 is fixedly connected to the top surface of the second fixing frame 5. The clamping mechanism 3 is located above the positioning mechanism 2 and the assembly mechanism 1. The clamping mechanism 3 is fixedly arranged on one side of the first fixing frame 4. The assembly mechanism 1 is fixedly arranged on one side of the second fixing frame 5. The clamping mechanism 3 and the assembly mechanism 1 are both located on the same side of the first fixing frame 4 and the second fixing frame 5; the positioning mechanism 2 is used to place and position the sliding core 6, and the clamping mechanism 3 is used to press the locking tooth plate 7 into the locking tooth 61 of the sliding core 6.

[0038] Specifically, Figure 4As shown, the return spring 8 of this embodiment has a spring body 81 and mounting sections 82 located at both ends of the spring body 81, the two mounting sections 82 have the same size, each mounting section 82 includes an end 821 and a neck 822, the end 821 is located at the end of the mounting section 82 away from the spring body 81, the outer diameter and the inner diameter of the mounting section 82 gradually decrease from the end 821 to the neck 822 and gradually increase from the neck 822 to the end close to the spring body 81, the aperture of the first hole portion 621 is smaller than the outer diameter of the end 821 and larger than the outer diameter of the neck 822, the outer diameter of the spring body 81 is equal to or larger than the outer diameter of the end 821, and the inner diameter of the neck 822 is smaller than the inner diameter of the spring body 81. In addition, the second mounting hole 71 provided on the locking tooth plate 7 passes through a side edge of the locking tooth plate 7, and the second mounting hole 71 is an inverted tapered hole, the aperture of the second mounting hole 71 gradually decreases downward from its top surface, the aperture of the bottom surface of the second mounting hole 71 is larger than the outer diameter of the neck 822, and the aperture of the top surface of the second mounting hole 71 is larger than the outer diameter of the end 821. In this embodiment, when the reset spring 8 is assembled, a mounting section 82 of the reset spring 8 close to the locking tooth plate 7 is placed in a second mounting hole 71, and under the action of the pressing mechanism 3, the portion from the end 821 to the neck 822 of the mounting section 82 can be pressed in the second mounting hole 71 of the locking tooth plate 7, and the assembly mechanism 1 is used to assemble the mounting section 82 at the other end of the reset spring 8 into a corresponding first hole portion 621.

[0039] like Figures 1 to 3 As shown, the assembly mechanism 1 includes two lever assemblies corresponding to the two first mounting holes, a first driving assembly for driving the two lever assemblies to move simultaneously in the vertical direction, and a second driving assembly for driving the two lever assemblies to move closer to and / or farther from each other in the horizontal direction. Specifically, each lever assembly includes a lever 11, a fixed rod 12 fixedly connected to the end of the lever 11 away from the sliding core 6, and a fixed block fixedly connected to one end of the fixed rod 12, and the length direction of the fixed rod 12 is parallel to the length direction of the lever 11 and the fixed block. The outer diameter of the end of the lever 11 close to the sliding core 6 is smaller than the inner diameter of the neck 822, and the difference between the two is 0.2-0.3 mm, so as to ensure that the lever 11 can be inserted into the mounting section 82 from the end of the reset spring 8 away from the locking tooth plate 7. A notch 111 is provided on one side of the lever 11 from its outer wall inwardly to form a first section 112, a second section 113 and a third section 114. The second section 113 is located between the first section 112 and the third section 114. The depth of the notch 111 is less than the diameter of the lever 11. The length of the notch 111 is less than the length of the lever 11. The first section 112, the second section 113 and the third section 114 are all arc surfaces. The notch 111 is provided to ensure that the mounting section 82 can be hooked from the inside of the mounting section 82 when the first driving assembly drives it to move downward, so that the return spring 8 moves downward accordingly.

[0040] Each fixing block includes a first portion 131 and a second portion 132 connected to each other, the first portion 131 is located above the second portion 132, and the fixing rod 12 is fixedly connected to the first portion 131. A side of the first portion 131 of a fixing block close to another fixing block is flush with a side of the second portion 132 close to another fixing block, and a width of the first portion 131 is smaller than a width of the second portion 132.

[0041] The first driving assembly includes a first fixed plate 141, a second fixed plate 142, a first slide rail 151 fixedly arranged on one side of the first fixed plate 141, a first slider 152 fixedly arranged on one side of the second fixed plate 142, and a first driver 161 connected to one end of the second fixed plate 142. The side of the first fixed plate 141 away from the second fixed plate 142 is fixedly connected to one side of the second fixed frame 5. In this embodiment, two first slide rails 151 are arranged in parallel on one side of the first fixed plate 141, the first slider 152 on one side of the second fixed plate 142 is arranged corresponding to the first slide rail 151, the first slider 152 is slidably connected to the first slide rail 151, the first fixed plate 141 is parallel to the second fixed plate 142 and the first slide rail 151, and the first slide rail 151 is parallel to the fixed rod 12. A first fixing seat 162 is fixedly provided at one end of the first fixing plate 141 away from the sliding core 6 , a shell of the first driver 161 is fixedly connected to the first fixing seat 162 , and a telescopic shaft of the first driver 161 is fixedly connected to one end of the second fixing plate 142 away from the sliding core 6 .

[0042] The second driving assembly includes a third fixed plate 17, a second slide rail 181 and a third slide rail 183 fixedly arranged on a side of the second fixed plate 142 away from the first fixed plate 141, a second slider 182 fixedly arranged on a side of each fixed block, a third slider 184 fixedly arranged on a side of the third fixed plate 17, and a second driver 191 connected to one end of the third fixed plate 17. In this embodiment, one second slide rail 181 and one third slide rail 183 are each provided, the second slide rail 181 is located at the top of the second fixed plate 142, and the second driver 191 is close to the bottom of the second fixed plate 142; the third slide rail 183 is located below the second slide rail 181 and the fixed block, and the second slide rail 181 is perpendicular to the third slide rail 183, and the third slide rail 183 is parallel to the first slide rail 151. The second slider 182 is slidably connected to the second slide rail 181. The length of the second slide rail 181 is greater than the sum of the widths of the second parts 132 of the two fixed blocks, ensuring that the two second parts 132 can be separated by a sufficient distance to drive the two levers 11 away from each other. The third slider 184 is slidably connected to the third slide rail 183. A second fixed seat 192 is fixedly disposed at one end of the second fixed plate 142 away from the slide core 6. The housing of the second driver 191 is fixedly connected to the second fixed seat 192. The telescopic shaft of the second driver 191 is fixedly connected to one end of the third fixed plate 17 away from the slide core 6.

[0043] In addition, the end of the third fixing plate 17 away from the second driver 191 is provided with two waist-shaped holes 171 penetrating the thickness direction thereof, the two waist-shaped holes 171 are symmetrically and tiltedly arranged, and the distance between the ends of the two waist-shaped holes 171 away from the second driver 191 is greater than the distance between the ends of the two waist-shaped holes 171 close to the second driver 191. Cams 133 are fixedly arranged on one side of the second portion 132 of the two fixing blocks close to the third fixing plate 17, the waist-shaped holes 171 and the cams 133 are arranged one by one, one waist-shaped hole 171 is used to accommodate one cam 133, and the width of the waist-shaped hole 171 matches the outer diameter of the cam 133, so that the outer periphery of the cam 133 can fit with the inner wall of the waist-shaped hole 171. Under the driving action of the second driver 191, the third fixing plate 17 is driven to move up and down in the vertical direction, and then the cam 133 cooperates with the waist-shaped hole 171 to drive the two fixing blocks to move away from and / or closer to each other along the length direction of the second slide rail 181, and finally drives the two levers 11 to move away from and / or closer to each other, so as to facilitate the adjustment of the distance between the two levers 11 to pull the reset spring 8 outward or retract it inward. Since the lever assembly and the second driving assembly are integrally fixedly arranged on the second fixing plate 142, when the first driver 161 drives the second fixing plate 142 and the first slider 152 to slide up and down on the first slide rail 151 in the vertical direction, the lever assembly can be driven to move up and down in the vertical direction as a whole, so that the lever 11 can be inserted into or removed from the mounting section 82.

[0044] Furthermore, if Figure 1 and Figure 6 As shown, the positioning mechanism 2 includes a fourth fixing plate 21 and support seats 22 fixedly arranged at both ends of the top surface of the fourth fixing plate 21. The fourth fixing plate 21 is provided with a through slot 211 that runs through the thickness direction thereof for the two first parts 131 to pass through. The through slot 211 is parallel to the second slide rail 181. The length of the through slot 211 is greater than the distance between the two side surfaces of the two first parts 131 that are away from each other and less than the distance between the two side surfaces of the two second parts 132 that are away from each other. Such a setting can limit the second part 132 by using the through slot 211 to avoid the lever 11 from moving upward too far under the driving action of the first driver 161 and causing interference with the clamping mechanism 3. In addition, the distance between the two support seats 22 is less than the length of the slide core 6. A groove 221 is provided downward on the top surface of each support seat 22. The groove 221 is used to engage with the bottom of the slide core 6. Before assembly, the slide core 6 is first placed in the grooves 221 of the two support seats 22. A first sensor 23 is fixedly provided on the inner side of one of the two support seats 22 . The first sensor 23 is used to detect whether the sliding core 6 is placed on the support seat 22 . If the sliding core 6 is not placed, an alarm will be sounded to prompt the staff.

[0045] like Figure 1 As shown, the clamping mechanism 3 includes a clamping driver 31, a first clamping block 32 connected to the clamping driver 31, a second clamping block 33 located below the first clamping block 32, and positioning pins 34 fixedly arranged at both ends of the bottom of the second clamping block 33. One side of the shell of the clamping driver 31 is fixedly connected to one side of the first fixed frame 4, and a second sensor 36 is fixedly arranged on the side of the first fixed plate 141. The second sensor 36 is located above the sliding core 6 to detect whether the locking tooth plate 7 is installed on the sliding core 6. If the locking tooth plate 7 is not installed, an alarm will be triggered to prompt the staff. The two locating pins 34 are both perpendicular to the sliding core 6, and the distance between the axial centers of the two locating pins 34 is equal to the distance between the centers of the two second mounting holes 71 on the locking tooth plate 7; one end of the two locating pins 34 extends downward from the bottom surface of the second pressure block 33 to ensure that the locating pins 34 can be inserted into an installation section 82 of the reset spring 8 located in the second mounting hole 71 under the driving action of the clamping driver 31, thereby ensuring that when the lever 11 pulls the reset spring 8 outward obliquely, the reset spring 8 will not slide out from one side of the second mounting hole 71 of the locking tooth plate 7.

[0046] A plurality of elastic members 35 are arranged between the first pressing block 32 and the second pressing block 33. A receiving groove is provided at the bottom of the first pressing block 32 and the top of the second pressing block 33 for accommodating the elastic member 35 together. One end of the elastic member 35 is fixedly connected to the bottom of the first pressing block 32, and the other end of the elastic member 35 is fixedly connected to the top of the second pressing block 33. Before the clamping mechanism 3 clamps the locking tooth plate 7, the elastic member 35 is in a natural state or a stretched state so that there is a gap between the first pressing block 32 and the second pressing block 33. When the clamping driver 31 drives the positioning pin 34 to be inserted into the mounting plate 7, the elastic member 35 is in a natural state or a stretched state so that there is a gap between the first pressing block 32 and the second pressing block 33. When the segment 82 is installed, the bottom surface of the second pressing block 33 is in contact with the top surface of the locking toothed plate 7 and the first pressing block 32 presses down the elastic member 35 so that the elastic member 35 is in a compressed state, and the first pressing block 32 and the second pressing block 33 are in contact with each other; as the first driving component drives the reset spring 8 to move downward, the clamping driver 31 no longer acts, and the reset spring 8 moves downward so that the locking toothed plate 7 also moves downward, and the second pressing block 33 continues to move downward together with the locking toothed plate 7 under the action of the resilience of the compressed elastic member 35 to continue to clamp the locking toothed plate 7. The setting of the elastic member 35 can ensure that when the second pressing block 33 moves downward with the locking toothed plate 7 (a small downward movement), the clamping driver 31 does not need to be started, so as to avoid the clamping driver 31 from having an excessively large force that is difficult to control, which may damage the locking toothed plate 7.

[0047] In this embodiment, the return spring 8 has a first state, a second state, a third state and a fourth state. The length of the return spring 8 in the second state and the third state is greater than the length of the return spring 8 in the first state and the fourth state. The length of the return spring 8 in the first state is less than the length of the return spring 8 in the fourth state. The two return springs 8 in the first state and the fourth state are parallel to each other. Figure 6 and Figure 7 As shown, the first state is the initial state before assembly. When the reset spring 8 is in the first state, since the diameter of the first hole portion 621 is smaller than the outer diameter of the end portion 821 of the mounting segment 82, the bottom surface of a mounting segment 82 away from the locking tooth plate 7 is located on the top surface of the first hole portion 621. At this time, the reset spring 8 has a supporting force on the locking tooth plate 7 on its top to prevent the locking tooth plate 7 from falling downward. The two reset springs 8 in the second state are obtained by stretching the two reset springs 8 in the first state outward. When the reset spring 8 is in the second state, the bottom surface of a mounting segment 82 away from the locking tooth plate 7 is located on the top surface of the second hole portion 622, as shown in FIG. Figure 8 The two return springs 8 in the third state are obtained by stretching the two return springs 8 in the second state downward. When the return springs 8 are in the third state, a mounting section 82 away from the locking tooth plate 7 is located in the second hole 622, as shown in FIG. Fig. 9 The two return springs 8 in the fourth state are obtained by retracting the two return springs 8 in the third state. When the return spring 8 is in the fourth state, a mounting section 82 away from the locking tooth plate 7 is located in the first hole 621, as shown in FIG. Fig.10 The process of the return spring 8 changing from the first state to the second state and from the second state to the third state will stretch it, so that the length of the assembled return spring 8 in the fourth state will increase compared with the length in the first state.

[0048] The following briefly describes the working process of the assembly device of the sliding core 6 and the return spring 8 on the locking tooth plate 7 in this embodiment:

[0049] The operator places the sliding core 6 into the grooves 221 of the two support seats 22 of the positioning mechanism 2, then places the locking tooth plate 7 into the locking teeth 61 on the sliding core 6, and respectively installs the mounting segments 82 at the top of the two reset springs 8 into the two second mounting holes 71 on the sliding core 6, and ensures that the axis of the reset spring 8 and the axis of the second mounting holes 71 are located in the same vertical direction. At this time, the bottom surface of the mounting segment 82 at the bottom of the reset spring 8 contacts the top surface of the first hole portion 621.

[0050] The clamping driver 31 drives the first clamping block 32 and the second clamping block 33 to move downward so that the two positioning pins 34 are respectively inserted into the interior of a mounting section 82 of the reset spring 8 located in the second mounting hole 71. At the same time, the bottom surface of the second clamping block 33 is in contact with the top surface of the locking tooth plate 7. The first driver 161 is actuated to drive the second fixing plate 142 to move upward, thereby driving the two levers 11 to be respectively inserted into the interior of the corresponding mounting section 82 at the bottom of the reset spring 8; then, the second driver 191 is actuated to drive the third fixing plate 17 to move upward, thereby driving the two levers 11 on the two fixing blocks to move away from each other to stretch the two reset springs 8 outward. Since the mounting section 82 at the top of the reset spring 8 is fixed, the entire reset spring 8 is obliquely pulled outward by the lever 11, as shown in FIG. Figure 8 As shown, until the mounting section 82 at the bottom of the return spring 8 moves to the top of the second hole portion 622 , at which time the notch 111 of the lever 11 just hooks the inside of the mounting section 82 at the bottom of the return spring 8 .

[0051] The first driver 161 operates again to drive the second fixing plate 142 to move downward, thereby driving the two levers 11 to move downward to drive the mounting section 82 at the bottom of the return spring 8 to move downward until the neck 822 of the mounting section 82 is located in the second hole portion 622. During this process, the locking tooth plate 7 moves downward together with the return spring 8.

[0052] The second driver 191 operates again to drive the third fixed plate 17 to move downward, thereby driving the two levers 11 on the two fixed blocks to approach each other to retract the two return springs 8 inward until the mounting sections 82 at the bottom of the two return springs 8 enter the first hole 621 from the second hole 622, thereby completing the assembly of the return spring 8.

[0053] Subsequently, the pressing driver 31 can drive the first pressing block 32 and the second pressing block 33 to be lifted and reset upwards, so as to ensure that the operator can unload the finished product in time.

[0054] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the contents of the present invention and implement them accordingly. They cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. An assembly device for a sliding core and a locking tooth plate return spring, the sliding core having a locking tooth and two first mounting holes, the locking tooth plate having second mounting holes at both ends, each of the first mounting holes comprising a first hole portion and a second hole portion connected to each other, the aperture of the first hole portion being smaller than the aperture of the second hole portion, the center of the second mounting hole located on the same side and the center of the first hole portion being located in the same vertical direction, the distance between the two second hole portions being greater than the distance between the two first hole portions, characterized in that: The assembly device comprises a clamping mechanism, a positioning mechanism and an assembly mechanism, wherein the clamping mechanism is located above the positioning mechanism and the assembly mechanism, the positioning mechanism is used to place and position the slide core, and the clamping mechanism is used to press the locking tooth plate into the locking tooth of the slide core; The return spring comprises a spring body and mounting sections at both ends of the spring body, each of the mounting sections comprises an end and a neck, the end is located at an end of the mounting section away from the spring body, the outer diameter and the inner diameter of the mounting section both gradually decrease from the end to the neck and gradually increase from the neck to the end close to the spring body; The assembly mechanism comprises two lever assemblies corresponding to the two first mounting holes, a first driving assembly for driving the two lever assemblies to move simultaneously in the vertical direction, and a second driving assembly for driving the two lever assemblies to move closer to and / or farther from each other in the horizontal direction, each lever assembly comprises a lever, a notch is provided on one side of the lever, an outer diameter of an end of the lever close to the sliding core is smaller than an inner diameter of the neck; the lever is used to be inserted into the mounting section from an end of the return spring away from the locking tooth plate, and the notch is used to hook the return spring; A mounting section of the return spring close to the locking tooth plate is located in one of the second mounting holes, and the assembly mechanism is used to assemble another of the mounting sections into a corresponding one of the first hole portions.

2. The assembly device according to claim 1, characterized in that: The aperture of the first hole portion is smaller than the outer diameter of the end portion and larger than the outer diameter of the neck portion; the outer diameter of the spring body is equal to or larger than the outer diameter of the end portion, and the inner diameter of the neck portion is smaller than the inner diameter of the spring body; the difference between the outer diameter of one end of the lever close to the sliding core and the inner diameter of the neck portion is 0.2 to 0.3 mm.

3. The assembly device according to claim 2, characterized in that: The return spring has a first state, a second state, a third state and a fourth state. The lengths of the return springs in the second state and the third state are greater than the lengths of the return springs in the first state and the fourth state. The length of the return spring in the first state is less than the length of the return spring in the fourth state. The two return springs in the first state and the fourth state are parallel to each other. The two return springs in the second state are obtained by stretching the two return springs in the first state outward. The two return springs in the third state are obtained by stretching the two return springs in the second state downward. The two return springs in the fourth state are obtained by retracting the two return springs in the third state inward. When the return spring is in the first state, the bottom surface of a mounting section away from the locking tooth plate is located on the top surface of the first hole portion; when the return spring is in the second state, the bottom surface of a mounting section away from the locking tooth plate is located on the top surface of the second hole portion; when the return spring is in the third state, a mounting section away from the locking tooth plate is located in the second hole portion; when the return spring is in the fourth state, a mounting section away from the locking tooth plate is located in the first hole portion.

4. The assembly device according to claim 2, characterized in that: The notch is opened inwardly from the outer wall of one side of the lever to form a first section, a second section and a third section, the second section is located between the first section and the third section, the depth of the notch is smaller than the diameter of the lever, the length of the notch is smaller than the length of the lever, and the first section, the second section and the third section are all arc surfaces.

5. The assembly device according to claim 1, characterized in that: Each of the lever assembly also includes a fixed rod fixedly connected to one end of the lever away from the sliding core, and a fixed block fixedly connected to one end of the fixed rod, and the length direction of the fixed rod is parallel to the length direction of the lever and the fixed block; the first driving assembly includes a first fixed plate, a second fixed plate, a first slide rail fixedly arranged on one side of the first fixed plate, a first slider fixedly arranged on one side of the second fixed plate, and a first driver connected to one end of the second fixed plate, the first slider is slidably connected to the first slide rail, the first fixed plate is parallel to the second fixed plate and the slide rail, and the slide rail is parallel to the fixed rod.

6. The assembly device according to claim 5, characterized in that: The second driving assembly includes a third fixed plate, a second slide rail and a third slide rail fixedly arranged on the other side of the second fixed plate, a second slider fixedly arranged on one side of each of the fixed blocks, a third slider fixedly arranged on one side of the third fixed plate, and a second driver connected to one end of the third fixed plate, the second slide rail is located at the top of the second fixed plate, the second driver is close to the bottom of the second fixed plate, the third slide rail is located below the second slide rail and the fixed block and the second slide rail is perpendicular to the third slide rail, and the third slide rail is parallel to the first slide rail; the second slider is slidably connected to the second slide rail, and the third slider is slidably connected to the third slide rail.

7. The assembly device according to claim 6, characterized in that: The third fixing plate is provided with two waist-shaped holes penetrating through the thickness direction at one end away from the second driver, the two waist-shaped holes are symmetrically and inclinedly arranged, and the distance between the two ends of the waist-shaped holes away from the second driver is greater than the distance between the two ends of the waist-shaped holes close to the second driver; a cam is fixedly arranged on one side of the two fixing blocks close to the third fixing plate, the waist-shaped hole is used to accommodate the cam, and the outer periphery of the cam is in contact with the inner wall of the waist-shaped hole.

8. The assembly device according to claim 6, characterized in that: The positioning mechanism includes a fourth fixed plate and support seats fixedly arranged at both ends of the top surface of the fourth fixed plate, the fourth fixed plate is provided with a through groove running through its thickness direction, and the through groove is parallel to the second slide rail; the distance between the two support seats is less than the length of the slide core, and a groove is provided downward on the top surface of each support seat, and the groove is used to clamp with the bottom of the slide core.

9. The assembly device according to claim 8, characterized in that: Each of the fixing blocks includes a first part and a second part connected to each other, the first part is located above the second part, a side of the first part of one of the fixing blocks close to the other fixing block is flush with a side of the second part close to the other fixing block, a width of the first part is smaller than a width of the second part, the through groove is used for allowing the two first parts to pass through, and a length of the through groove is greater than a distance between two side surfaces of the two first parts that are far away from each other and less than a distance between two side surfaces of the two second parts that are far away from each other.

10. The assembly device according to claim 1, characterized in that: The clamping mechanism includes a clamping driver, a first clamping block connected to the clamping driver, a second clamping block located below the first clamping block, and positioning pins fixedly arranged at both ends of the bottom of the second clamping block, an elastic member is arranged between the first clamping block and the second clamping block, one end of the elastic member is fixedly connected to the bottom of the first clamping block, and the other end of the elastic member is fixedly connected to the top of the second clamping block, one end of the two positioning pins extends downward from the bottom surface of the second clamping block, the positioning pins are perpendicular to the sliding core, and the positioning pins are used to be inserted into an installation section of the return spring located in the second mounting hole, and the distance between the axial centers of the two positioning pins is equal to the distance between the centers of the two second mounting holes on the locking tooth plate.

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