CN219968638U

CN219968638U - Terminal grabbing device

Info

Publication number: CN219968638U
Application number: CN202320734214.6U
Authority: CN
Inventors: 何富泉; 陈祖发
Original assignee: Kunshan Changying Precision Technology Co ltd
Current assignee: Kunshan Changying Precision Technology Co ltd
Priority date: 2023-04-06
Filing date: 2023-04-06
Publication date: 2023-11-07
Anticipated expiration: 2033-04-06

Abstract

The utility model discloses a terminal grabbing device which is used for grabbing each terminal in a terminal assembly, wherein each terminal is provided with a plurality of holes, and the terminal grabbing device comprises a needle plate and contact pins arranged on the needle plate at least two positions corresponding to the holes of each terminal; an expansion part is formed at one end of the contact pin, which is close to the terminal, and can be outwards opened and inwards contracted along the radial direction of the opening, the radial dimension of the expansion part in the outwards opened state is larger than the inner diameter of the opening, and the radial dimension in the contracted state is smaller than the inner diameter of the opening. The terminal grabbing device can grab the terminal assembly at one time, and the external driving components such as the manipulator, the moving module and the like can move the terminal assembly to the injection mold at one time through the terminal grabbing device, so that the production efficiency is greatly improved, the action frequency of the external driving components is greatly reduced, and the service life of the external driving components is prolonged.

Description

Terminal grabbing device

Technical Field

The utility model relates to the field of terminal grabbing, in particular to a terminal grabbing device.

Background

In the process of grabbing the terminal assembly to the injection mold and injection molding the terminal assembly with the injection molding part, since the terminal assembly is composed of a plurality of terminals having the same shape and/or different shapes, it is generally necessary for some terminal assemblies composed of terminals having different shapes to be respectively grabbed to the injection mold by adopting grabbing devices corresponding to the various shapes.

For example, when the terminal assembly is composed of a plurality of first terminals having the same shape and a plurality of second terminals having different shapes from the first terminals, it is necessary to grasp the plurality of first terminals and the plurality of second terminals into the injection mold by using a first terminal grasping means for grasping the first terminals and a second terminal grasping means for grasping the second terminals, respectively. The first terminal grabbing device and the second grabbing device comprise a stripper plate, positioning pins arranged on the stripper plate and two mechanical clamping arms. The mechanical clamping arm of the first terminal grabbing device is set according to the shape of the first terminal and used for clamping a plurality of first terminals positioned by the positioning needle, when the plurality of first terminals are sent into the injection mold, the mechanical clamping arm loosens the plurality of first terminals, and the stripper plate drives the positioning needle to separate from the plurality of first terminals. The mechanical clamping arm of the second terminal grabbing device is set according to the shape of the second terminal and used for clamping a plurality of second terminals positioned by the positioning needle, when the plurality of second terminals are sent into the injection mold, the mechanical clamping arm loosens the plurality of second terminals, and the stripper plate drives the positioning needle to separate from the plurality of second terminals.

According to the terminal grabbing device, due to the fact that the two mechanical clamping arms are adopted to clamp the corresponding terminals, if the force is excessive, the terminals are easy to damage, if the force is too light, the terminals are easy to separate from the positioning pins, and when the terminal assembly comprises a plurality of terminals in various shapes, one terminal grabbing device cannot grab the terminals in various shapes in the terminal assembly to the injection mold at one time, a plurality of terminal grabbing devices in one-to-one correspondence with the various shapes are needed, the manufacturing cost is too high, the grabbing times are high and frequent, the production time is increased, and the production efficiency is reduced.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model aims to solve the technical problems that: a terminal gripping device capable of gripping all terminals in a terminal assembly at one time is provided.

In order to solve the technical problems, the utility model adopts a technical scheme that: providing a terminal grabbing device, which is used for grabbing each terminal in a terminal assembly, wherein each terminal is provided with a plurality of holes, and the terminal grabbing device comprises a needle plate and contact pins arranged on the needle plate at least two hole positions corresponding to each terminal; an expansion part is formed at one end of the contact pin, which is close to the terminal, and can be outwards opened and inwards contracted along the radial direction of the opening, the radial dimension of the expansion part in the outwards opened state is larger than the inner diameter of the opening, and the radial dimension in the contracted state is smaller than the inner diameter of the opening.

Further, the expansion part is provided with a large-diameter section with a diameter larger than the inner diameter of the opening, a conical section which extends from the large-diameter section to the opening direction and has a gradually smaller diameter, and at least one slit which penetrates through the conical section and the expansion section along the axial direction and the radial direction of the pin, and the slit divides the expansion section and the conical section into at least two supporting parts.

Further, the slit is a V-shaped slit with the small end facing the needle plate; the slots are defined in a plurality, and the slots pass through the axes of the terminals and penetrate through the conical section and the expansion section in the radial direction and the axial direction.

Further, the terminal assembly comprises a first terminal and a second terminal, wherein the first terminal comprises a left first terminal arranged on the left side of a central line and a right first terminal arranged on the right side of the central line, and the left first terminal and the right first terminal comprise two independent terminals; one of the left first terminals is positioned on the left side of the neutral line, one part of the other terminal is positioned on the left side of the neutral line, and the other part extends to the right side and is mutually spaced from two independent terminals on the right side; one of the terminals of the first right terminal is located on the right side of the neutral line, and one part of the other terminal is located on the right side of the neutral line, and the other part extends to the left side and is spaced from the two independent terminals on the left side; the second terminal has a left side portion and a right side portion symmetrically disposed along a center line; and a plurality of holes are formed in each of the first terminal and the second terminal, and at least two pins are arranged at least two holes of the needle plate corresponding to each of the first terminal and the second terminal.

Further, the device also comprises a fixed plate, a stripper plate and a driving mechanism; the needle plate is arranged on one side of the fixed plate, which faces the terminal assembly, through a first sliding guide assembly so as to be capable of sliding back and forth relative to the fixed plate along the axial direction; the stripper plate is arranged on one side of the needle plate, which faces the terminal assembly, through a second sliding guide assembly so as to be capable of sliding back and forth along the axial direction, and a position, corresponding to each contact pin, of the stripper plate is provided with a through hole for each contact pin to movably pass through; the driving mechanism is used for driving the needle plate to push the stripper plate to move and reset towards the terminal assembly under the sliding guide effect of the first sliding guide assembly; the contact pin can penetrate through the perforation in the direction of the terminal assembly under the movement of the needle plate in the corresponding direction, the expansion part is highlighted on one side surface of the stripping plate, which faces the terminal assembly, and the contact pin can retract in the direction away from the terminal assembly under the movement of the needle plate in the other corresponding direction.

Further, a first elastic piece is arranged between the needle fixing plate and the fixing plate, and the first elastic piece is used for limiting the movement freedom degree of the needle fixing plate and resetting the needle fixing plate; and/or

The second elastic piece is arranged between the stripper plate and the main body plate and used for limiting the movement freedom degree of the stripper plate and resetting the stripper plate.

Further, the needle plate comprises a main body plate and a needle fixing plate which is arranged on one side of the main body plate facing the fixing plate in a split mode, and a jack for the movable penetration of the contact pin is arranged at the position, corresponding to each contact pin, of the main body plate; the first sliding guide assembly comprises a first sliding guide part for enabling the needle fixing plate to be in sliding connection with the fixing plate and a second sliding guide part for enabling the main body plate to be in sliding connection with the fixing plate, and the needle fixing plate and the main body plate can move relative to the fixing plate along the axial direction through the first sliding guide part and the second sliding guide part respectively; the output end of the driving mechanism is connected with the main body plate so as to enable the main body plate to reciprocate along the axial direction, when the terminal is grasped, the driving mechanism enables the main body plate to be close to the needle fixing plate, and the expansion part of the contact pin is highlighted on one side surface of the stripper plate, which faces the terminal assembly, so that the contact pin can be inserted into the opening; when the material is removed, the driving mechanism enables the main body plate to move towards the direction of the terminal assembly so as to be far away from the needle head fixing plate, the main body plate drives the material removing plate to push the terminal assembly, and the contact pins are passively retracted to be separated from the holes due to the pushing force of the material removing plate.

Further, the needle fixing plate comprises a bearing plate and a pressing plate which is detachably arranged on the bearing plate and faces one side face of the fixing plate, a needle mounting hole for mounting a needle of the contact pin is formed in the bearing plate in a penetrating manner along the axial direction, the needle mounting hole is provided with a large hole section which is closer to the fixing plate and a small hole section which is closer to the main body plate, and a bearing platform is formed by the small hole section adjacent to a horizontal plane of the large hole section; the needle head is provided with a large-diameter section assembled in the large-hole section and a small-diameter section assembled in the small-hole section, and a plane of the large-diameter section, which is close to the small-diameter section, is supported at the bearing platform; the pressing plate is used for pressing and holding the bearing plate when the needle head of the contact pin is placed in the needle head mounting hole so as to prevent the needle head from moving towards the direction of the fixing plate.

Further, an accommodating groove is formed in the main body plate at a position corresponding to the needle fixing plate, and a plurality of positioning columns used for positioning the needle fixing plate are arranged at the bottom of the accommodating groove.

Further, the driving mechanism is defined as a driving cylinder with a cylinder body connected with the fixed plate, and a piston rod of the driving cylinder movably penetrates through the fixed plate along the axial direction; the second sliding guide piece comprises a second sliding sleeve penetrating through the fixed plate along the axial direction, a second guide rod movably penetrating through the second sliding sleeve and a connecting plate arranged outside one side, far away from the terminal assembly, of the fixed plate, the connecting plate is connected with a piston rod of the driving cylinder and is connected with one end, penetrating out of the fixed plate, of the second guide rod, and one end, facing the terminal assembly, of the second guide rod is connected with the main body plate; when a piston rod of the driving cylinder moves along an axis line in the direction of the terminal assembly, the connecting plate and the second guide rod are driven to move in the direction of the terminal assembly, so that the main body plate pushes the stripper plate in the direction of the terminal assembly, the stripper plate compresses the terminal assembly at a target position, and the contact pin is passively retracted due to the movement of the piston rod so as to enable the expansion part to be separated from the opening; when the piston rod of the driving cylinder moves along the axis in a direction away from the terminal assembly, the main body plate drives the stripper plate to return so that the expansion part of the pin is highlighted on the stripper plate towards one side surface of the terminal.

The terminal grabbing device has the following beneficial effects: according to the contact pin of the corresponding group number of quantity design of terminal subassembly, every contact pin of group includes two at least contact pins that correspond with two at least trompils of every terminal, inserts the one end design of trompil with the contact pin and be expansion portion, makes contact pin and the pore wall tight fit of trompil through the structure of expansion portion, prevents effectively that the terminal from dropping. The design of the contact pin solves the problem that in the prior art, a plurality of terminal grabbing devices which respectively clamp terminals with different shapes are required to be designed because of different shapes of the terminals, and because each terminal grabbing device has a plurality of parts, a mechanical clamping arm for clamping the terminals, a driving part for driving the mechanical clamping arm to clamp and loosen, and the like, the terminal grabbing device greatly reduces the manufacturing cost, can grab a terminal assembly at one time, and outer driving parts such as a manipulator, a mobile module and the like can move the terminal assembly to an injection mold at one time through the terminal grabbing device, so that the production efficiency is greatly improved, the action frequency of the outer driving parts is greatly reduced, and the service life of the outer driving parts is prolonged. According to the grabbing device, the design of the first sliding guide assembly, the second sliding guide assembly and the split needle plate is different from the stripping mode of the ejection in the prior art, and the contact pins are automatically retracted to be separated from the openings, so that the damage to the terminals caused by the ejection mode is avoided, and the terminals are effectively protected.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a limitation on the utility model. In the drawings:

fig. 1 is a top view of a terminal assembly in one embodiment.

Fig. 2 is a schematic view of the structure of the terminal gripping device in a gripping state.

Fig. 3 and 4 are schematic structural views of the pin of fig. 2.

Fig. 5 is a schematic view of the structure of the terminal grabbing device in the state of glue.

Fig. 6 is a longitudinal cross-sectional view of the needle mount plate and body plate of fig. 5.

Fig. 7 is a top view of fig. 5 with all pins removed.

Fig. 8 is a cross-sectional view of A-A in fig. 7.

Fig. 9 is a cross-sectional view of B-B of fig. 7.

The meaning of the reference numerals in the drawings are:

a terminal assembly A; a midline L1; a left first terminal A1; one of the terminals a11; another terminal a12; a right first terminal A2; one of the terminals a21; another terminal a22; a second terminal A3; opening a hole A4;

a fixing plate 100; a first elastic member 110; a second through hole 120;

a first slide guide assembly 200; a first slide guide 210; a first sliding sleeve 211; a first guide bar 212; an inner screw hole 212a; a first stopper 213; a retainer ring 2131; a bolt 2132; a first connector 214; a baffle 2141; a bolt 2142; a second slide guide 220; a second sliding sleeve 221; a small outer diameter section 221a; a large outer diameter section 221b; a second guide bar 222; a connection plate 223; a third connector 224;

a needle plate 300; a body plate 310; needle fixing plate 320; a receiving groove 311; a positioning post 312; a jack 313; needle fixing plate 320; a carrier plate 321; a pressing plate 322; a needle mounting hole 323; a macroporous section 323a; a small hole section 323b; an insertion hole 324; a first through hole 325;

a second slide guide assembly 400; a third runner 410; a third guide bar 420; a second stopper 430;

a stripper plate 500; a perforation 510;

a drive mechanism 600;

pin 700; a needle 710; a large diameter section 711; a small diameter section 712; an expansion unit 720; a large diameter section 721; a tapered section 722; a slit 723; a strut 724.

Detailed Description

In order to make the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to specific embodiments of the present utility model and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

Referring to fig. 1, taking an injection molding process of an injection molding part as an example, the terminal grabbing device according to the embodiment of the utility model can grab the terminal assembly a to an injection mold (a destination position) at one time. Whether the terminal assembly a is composed of a plurality of terminals with the same shape, or the terminal assembly a is composed of a plurality of terminals with different shapes, or the terminal assembly a is composed of a plurality of terminals with the same shape and a plurality of terminals with different shapes, the terminal grabbing assembly of the embodiment can grab the terminal assembly a in the above situation into the injection mold at one time. A terminal assembly a such as that shown in fig. 1 is composed of two sets of almost symmetrical first terminals and a set of second terminals A3 having a shape completely different from that of the first terminals. The left first terminal A1 and the right first terminal A2 each include two independent terminals, one of the terminals a11 of the left first terminal A1 is located entirely on the left side of the center line L1, and the other terminal a12 has a portion located on the left side of the center line L1, and the other portion extends to the right terminal and is spaced apart from the two independent terminals on the right side; one of the terminals a21 of the right-hand first terminal A2 is located entirely on the right side of the center line L1, and the other terminal a22 has a portion located on the right side of the center line L1, and another portion extending to the left-hand terminal and spaced from the two independent terminals on the left side. The second terminal A3 has a left side portion and a right side portion symmetrically disposed along the center line L1. In either configuration, the terminal assembly A is shown with a plurality of openings A4 in each terminal.

Referring to fig. 2, the terminal grabbing device according to the embodiment of the utility model includes a fixing plate 100, a needle plate 300 slidably disposed on a side of the fixing plate 100 facing the terminal assembly a through a first sliding guide assembly 200, a stripper plate 500 slidably disposed on a side of the needle plate 300 near the terminal assembly a through a second sliding guide assembly 400, and a driving mechanism 600 for driving the needle plate 300 and the stripper plate 500 to reciprocate along an axial direction, wherein the driving mechanism 600 is specifically configured to drive the needle plate 300 to push the stripper plate 500 to move and reset toward the terminal assembly a under the sliding guide effect of the first sliding guide assembly 200. The fixing plate 100 is used for being connected with an external driving component (such as a manipulator, a moving module and the like) and enabling the terminal grabbing assembly to move back and forth between the terminal assembly jig table and the injection mold, so that grabbing and moving of the terminal assembly A are achieved. The pin 700 is assembled on the pin plate 300, the pin 700 movably penetrates through the stripper plate 500, and the tail of the pin 700 can be exposed on the stripper plate 500 and face to one side of the terminal assembly a, and is used for being inserted into the corresponding hole A4 and tightly matched with the hole A4 when needed, so that the terminal can be grasped. The pin 700 is specifically configured to be able to pass through the through hole in the direction of the terminal assembly a when the pin plate 300 is moved in the corresponding direction, and to make the expansion portion protrude from a side surface of the stripper plate 500 facing the terminal assembly a, and the pin 700 is able to return in a direction away from the terminal assembly a when the pin plate 300 is moved in the other corresponding direction. The stripper plate 500 is used to remove the pins 700 from the openings A4 when the terminal assembly a is moved into the injection mold, so as to achieve the stripping function. As can be seen from the above description, the component for realizing the terminal grabbing function is provided with a needle plate 300 and pins 700 disposed on the needle plate 300 at least at two openings A4 corresponding to each terminal. The fixed plate 100 is a component for connecting with a mobile device, and is configured to realize the function of the mobile terminal assembly a, the first sliding guide assembly 200, the stripper plate 500 and the second sliding guide assembly 400 are components configured to realize that the pins 700 are highlighted by the stripper plate 500 and the retracting function during stripping, and belong to optional, more optimized and better functional components, and in different embodiments, the functional components can be omitted or replaced by other functional components.

Referring to fig. 3 and 4, the pin 700 is defined as having a needle 710 mounted on the needle plate 300 and a tail movably penetrating through the stripper plate 500, and the tail can penetrate out of the stripper plate 500 to protrude from a side surface of the stripper plate 500 near the terminal assembly a, so as to form an expansion portion 720 closely matching with the opening A4 of the terminal. The expansion portion 720 is capable of expanding outward and contracting inward in the radial direction of the opening A4, and the radial dimension of the expansion portion 720 in the outwardly expanded state is larger than the inner diameter of the opening A4 and in the contracted state is smaller than the inner diameter of the opening A4.

The expansion portion 720 has a large diameter section 721 having a diameter larger than the inner diameter of the opening A4, a tapered section 722 extending from the large diameter section 721 toward the opening A4 and having a diameter decreasing gradually, and at least one slit 723 penetrating the tapered section 722 and the expansion section in both the axial direction and the radial direction of the pin 700, the slit 723 being a V-shaped slit having a small end facing the direction of the needle plate 300. The slit 723 separates the expansion section and the conical section 722 into at least two struts 724. In the illustrated embodiment, the slot 723 is defined as a plurality of slots 723 each passing through the axial center of the terminal and extending radially and axially through the tapered section 722 and the expansion section. For example, two slits 723 may be formed, the two slits 723 may be in a cross shape on a horizontal projection plane, the two slits 723 partition the expansion portion 720 into four supporting portions 724, and the radial dimensions of the four supporting portions 724 are larger than the inner diameter of the opening A4, that is, the four supporting portions 724 may be supported outwards on the wall of the opening A4 to prevent the terminal from falling off. When the four supporting parts 724 are all folded inwards, the gaps of the two slits 723 are gradually reduced, so that the radial dimensions of the four supporting parts 724 are gradually reduced, and the four supporting parts 724 can be easily inserted into or separated from the opening A4 when being smaller than the inner diameter of the opening A4. For another example, three slits 723 may be formed, the three slits 723 may be in an "x" shape in a horizontal projection plane, and the three slits 723 partition the expansion portion 720 into six stay portions 724.

Referring to fig. 5, the needle plate 300 is disposed on the side of the fixing plate 100 facing the terminal assembly a through the first sliding guide assembly 200 so as to be capable of sliding reciprocally with respect to the fixing plate 100 along the axial direction. The needle plate 300 includes a main body plate 310 and a needle fixing plate 320 detachably disposed on one side of the main body plate 310 facing the fixing plate 100, a first elastic member 110 is disposed between the needle fixing plate 320 and the fixing plate 100, and the first elastic member 110 is used for limiting the movement freedom of the needle fixing plate 320 and resetting the needle fixing plate 320. The output end of the driving mechanism 600 is connected to the main body plate 310 to reciprocate the main body plate 310 along the axial direction, when the terminal is gripped, the driving mechanism 600 brings the main body plate 310 close to the needle fixing plate 320, and the expansion portion 720 of the pin 700 protrudes from the side surface of the stripper plate 500 facing the terminal assembly a to be capable of being inserted into the opening A4; in the stripping process, the driving mechanism 600 moves the main body plate 310 towards the direction of the terminal assembly a to be away from the needle fixing plate 320, the main body plate 310 drives the stripping plate 500 to push the terminal assembly a, and the pins 700 are passively retracted to be separated from the openings A4 due to the pushing force of the stripping plate 500.

The size of the main body plate 310 is larger than that of the needle fixing plate 320, a receiving groove 311 for receiving the needle fixing plate 320 is provided on the main body plate 310 at a position corresponding to the needle fixing plate 320, the receiving groove 311 penetrates through the main body plate 310 along a width direction (front-rear direction in the drawing) of the fixing plate 100, a plurality of positioning posts 312 for positioning the needle fixing plate 320 are provided on a bottom surface of the receiving groove 311, and the plurality of positioning posts 312 are used for positioning the needle fixing plate 320 in a horizontal direction. The body plate 310 is provided with a plurality of insertion holes 313 for the movable insertion of the pins 700 at positions corresponding to each pin 700, the insertion holes 313 penetrate through the body plate 310 from the bottom of the accommodating groove 311 toward the terminal assembly a, and the aperture of the insertion holes 313 is larger than the outer diameter of a section of the insertion holes 313 into which the pins 700 are inserted, so that the pins 700 can be movably inserted into the insertion holes 313 along the axial direction.

Referring to fig. 6, the needle fixing plate 320 includes a carrier plate 321 and a pressing plate 322 detachably disposed on the carrier plate 321 and facing a side of the fixing plate 100, a needle mounting hole 323 for mounting the needle 710 of the needle 700 is formed on the carrier plate 321 in a penetrating manner along an axial direction, the needle mounting hole 323 has a large hole section 323a closer to the fixing plate 100 and a small hole section 323b closer to the main plate 310, the small hole section 323b forms a bearing platform adjacent to a horizontal plane of the large hole section 323a, and in correspondence with this, referring to fig. 3, the needle 710 of the needle 700 has a large diameter section 711 fitted in the large hole section 323a and a small diameter section 712 fitted in the small hole section 323b, and the large diameter section 711 is carried at the bearing platform adjacent to a plane of the small diameter section 712. The pressing plate 322 may be detachably connected to the carrier plate 321 by a detachable connection member such as a screw, a rivet, or the like. When the tail of the pin 700 passes through the carrier plate 321, the main body plate 310 and the stripper plate 500 along the axial direction of the terminal assembly a, and the pin 710 is embedded in the pin mounting hole 323, a plane of the pin 710 facing the fixing plate 100 is located on the same plane as a corresponding plane of the carrier plate 321, and the pressing plate 322 presses the pin 710 into the pin mounting hole 323, so as to prevent the pin 700 from moving in the pin fixing plate 320 along the axial direction.

With continued reference to fig. 2 and 5, the first sliding guide assembly 200 includes a first sliding guide 210 for slidably connecting the needle fixing plate 320 to the fixing plate 100 and a second sliding guide 220 for slidably connecting the body plate 310 to the fixing plate 100, and the needle fixing plate 320 and the body plate 310 can move relative to the fixing plate 100 along the axial direction by the first sliding guide 210 and the second sliding guide 220, respectively.

Referring to fig. 7, 8 and 9, the first sliding guide 210 includes a plurality of (e.g. four) first sliding sleeves 211 penetrating the fixing plate 100 along the axial direction, a plurality of (e.g. four) first guide rods 212 movably penetrating each of the first sliding sleeves 211, a first blocking member 213 for preventing the first guide rods from being separated from the first sliding sleeves 211 toward the terminal assembly a, and a first connecting member 214 for connecting the first guide rods 212 with the needle fixing plate 320. Both ends of the first guide rod 212 are provided with inner screw holes 212a, and the first blocking member 213 and the first connecting member 214 each comprise a blocking ring 2131, 2141 and bolts 2132, 2142 threaded through the blocking rings 2131, 2141 and the corresponding inner screw holes 212 a. The inner diameter of the baffle ring 2131 of the first baffle 213 is smaller than the inner diameter of the first sliding sleeve 211, and the outer diameter of the baffle ring 2131 of the first baffle 213 is larger than the outer diameter of the sliding hole of the first sliding sleeve 211. The needle fixing plate 320 is provided with an insertion hole 324 into which the first guide rod 212 is inserted, and a first through hole 325 coaxially arranged with the insertion hole 324 and penetrating through the carrier plate 321 toward the direction of the terminal assembly a, the aperture of the first through hole 325 is smaller than that of the insertion hole 324 and larger than that of the inner screw hole 212a, the bolt 2142 of the first connecting piece 214 has a large diameter section matched with the first through hole 325 and a small diameter section matched with the insertion hole 324, the bolt 2142 of the first connecting piece 214 passes through the first through hole 325 and is then screwed into the inner screw hole 212a of the first guide rod 212, and the baffle ring 2141 of the first connecting piece 214 is sleeved on the large diameter section of the bolt 2142 and is positioned on the carrier plate 321 toward one side of the terminal assembly a.

The second sliding guide 220 includes a plurality of (e.g., two) second sliding sleeves 221 penetrating the fixing plate 100 along the axial direction, a plurality of (e.g., two) second guide rods 222 movably penetrating each of the second sliding sleeves 221, a connection plate 223 (see fig. 2) disposed on the fixing plate 100 outside the side far from the terminal assembly a and connected to the output end of the driving mechanism 600, a second connection member (not shown) for connecting one end of the second guide rod 222 penetrating the fixing plate 100 to the connection plate 223, and a third connection member 224 for connecting the other end of the second guide rod 222 to the main body plate 310. The fixing plate 100 has a second through hole 120 penetrating along the axial direction, the second sliding sleeve 221 has a small outer diameter section 221a penetrating into the second through hole 120, and a large outer diameter section 221b pressed on a side surface of the fixing plate 100 far away from the terminal assembly a, and the small outer diameter section 221a protrudes from a corresponding side surface of the fixing plate 100 toward one end of the terminal assembly a. The structures of the second connecting member and the third connecting member 224 are the same as or similar to those of the first connecting member 214, and will not be described in detail.

The driving mechanism 600 may be defined as a driving cylinder having a cylinder body connected to the fixing plate 100, a piston rod of the driving cylinder movably penetrates the fixing plate 100 in an axial direction, and one end penetrating the fixing plate 100 is connected to the connection plate 223. When the piston rod of the driving cylinder moves along the axis direction toward the terminal assembly a, the connecting plate 223 and the second guide rod 222 are driven to move toward the terminal assembly a, so that the main body plate 310 pushes the stripper plate 500 toward the terminal assembly a, the stripper plate 500 presses the terminal assembly a at the injection mold, and the pins 700 are passively retracted due to the pushing force of the stripper plate 500 to disengage the expansion part 720 from the opening A4; when the piston rod of the driving cylinder moves along the axis in a direction away from the terminal assembly a, the main body plate 310 drives the stripper plate 500 to return so that the expansion portion 720 of the pin 700 protrudes from a side surface of the stripper plate 500 facing the terminal.

The stripper plate 500 is disposed on the side of the needle plate 300 facing the terminal assembly a through a second sliding guide assembly 400 so as to be capable of sliding reciprocally along the axial direction, and a second elastic member is disposed between the stripper plate 500 and the main body plate 310, and the second elastic member is used for limiting the movement freedom of the stripper plate 500 and resetting the stripper plate 500. The stripper plate 500 is provided with a perforation 510 for each pin 700 to movably pass through, and the aperture of the perforation 510 is larger than the outer diameter of a section of the perforation 510 through which the pin 700 passes, so that the pin 700 can movably pass through the perforation 510 along the axial direction, and the tail of the pin 700 has a transverse offset space, so that the position can be finely adjusted when the pin 700 is inserted into the perforation A4.

The second sliding guide assembly 400 includes a plurality of (e.g., four) third sliding sleeves 410 penetrating the main body plate 310 along an axial direction, a plurality of (e.g., four) third guide rods 420 movably penetrating each of the third sliding sleeves 410, a second blocking member 430 for preventing the third guide rods 420 from being separated from the third sliding sleeves 410 along the axial direction of the terminal assembly a, and a fourth connecting member (not shown) for connecting the third guide rods 420 with the stripper plate 500. The main body plate 310 has a third through hole penetrating along the axial direction, the third sliding sleeve 410 has a small outer diameter section penetrating the third through hole, and a large outer diameter section pressed on a side surface of the main body plate 310 far away from the terminal assembly a, and the small outer diameter section protrudes from a corresponding side surface of the main body plate 310 toward one end of the terminal assembly a. The second blocking member 430 and the fourth connecting member have the same or similar structure as the first blocking member 213 and the first connecting member 214, and will not be described in detail.

The principle of the terminal grabbing device of the embodiment of the utility model is as follows: in a state that the expansion part 720 protrudes from the stripper plate 500 in the direction of the terminal assembly a (downward in the drawing), the main body plate 310 is attached to the lower surface of the needle fixing plate 320 away from the terminal assembly a (upward in the drawing), the needle fixing plate 320 is accommodated in the accommodating groove 311 on the main body plate 310, the positioning post 312 of the accommodating groove 311 is inserted into the positioning hole on the needle fixing plate 320, the first elastic member 110 is in a compressed state, the reaction force of the first elastic member 110 can prevent the needle fixing plate 320 and the main body plate 310 from moving upwards, the main body plate 310 drives the stripper plate 500 to move upwards when upwards, and the expansion part 720 is exposed downwards on the lower surface of the stripper plate 500; (II) inserting the expansion portion 720 of each pin 700 downward into the corresponding opening A4, wherein the outer diameter of the small end of the conical section 722 of the expansion portion 720 is smaller than the inner diameter of the opening A4, and the conical section 722 is gradually larger in the direction away from the terminal assembly A, so that the expansion portion 720 can be quickly and correctly inserted into the opening A4; the V-shaped slit 723 makes the outer diameter of the expansion portion 720 larger toward the opening A4, so that after the expansion portion 720 is inserted into the opening A4, the expansion portion located at the lower stage has larger outward tension, and is more tightly matched with the wall of the opening A4, thereby effectively preventing the terminal from falling down; and third, when the terminal assembly a needs to be loosened, for example, when an external driving component such as a manipulator, a moving module and the like moves the terminal grabbing device to the injection mold to place the terminal assembly a, and the stripper plate 500 carries the terminal to be pressed on the injection mold, the driving mechanism 600 moves the main body plate 310 downwards, the main body plate 310 moves upwards away from the needle 710 mounting plate in the direction of the terminal assembly a, and in the process of moving the main body plate 310 downwards, the small diameter section of the third sliding sleeve 410 is pressed downwards against the stripper plate 500, and because the stripper plate 500 is pressed on the injection mold at this time, after the main body plate 310 is pressed against the stripper plate 500, the main body plate 310 and the stripper plate 500 are both in a static state, so that the needle fixing plate 320 is moved upwards relative to the terminal assembly a, the needle fixing plate 320 drives the needle 700 to move upwards, and further the needle 700 is retracted upwards into the perforation 510 of the stripper plate 500, and the needle 700 is separated from the perforation 700 A4.

The foregoing examples only represent preferred embodiments of the present utility model, which are described in more detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims

1. A terminal grabbing device for grabbing each terminal in a terminal assembly, each terminal having a plurality of openings therein, characterized in that: comprises a needle plate and contact pins arranged on the needle plate at least two opening positions corresponding to each terminal; an expansion part is formed at one end of the contact pin, which is close to the terminal, and can be outwards opened and inwards contracted along the radial direction of the opening, the radial dimension of the expansion part in the outwards opened state is larger than the inner diameter of the opening, and the radial dimension in the contracted state is smaller than the inner diameter of the opening; the expansion part is provided with a large-diameter section with a diameter larger than the inner diameter of the opening, a conical section which extends from the large-diameter section to the opening direction and has a gradually smaller diameter, and at least one slit which penetrates through the conical section and the expansion section along the axial direction and the radial direction of the contact pin, and the slit divides the expansion section and the conical section into at least two supporting parts; the slotting is a V-shaped slot with the small end facing the direction of the needle plate; the slots are defined in a plurality, and the slots pass through the axes of the terminals and penetrate through the conical section and the expansion section in the radial direction and the axial direction.

2. The terminal grasping device according to claim 1, wherein: the terminal assembly comprises a first terminal and a second terminal, wherein the first terminal comprises a left first terminal arranged on the left side of a neutral line and a right first terminal arranged on the right side of the neutral line, and the left first terminal and the right first terminal comprise two independent terminals; one of the left first terminals is positioned on the left side of the neutral line, one part of the other terminal is positioned on the left side of the neutral line, and the other part extends to the right side and is mutually spaced from two independent terminals on the right side; one of the terminals of the first right terminal is located on the right side of the neutral line, and one part of the other terminal is located on the right side of the neutral line, and the other part extends to the left side and is spaced from the two independent terminals on the left side; the second terminal has a left side portion and a right side portion symmetrically disposed along a center line;

and a plurality of holes are formed in each of the first terminal and the second terminal, and at least two pins are arranged at least two holes of the needle plate corresponding to each of the first terminal and the second terminal.

3. The terminal gripping device according to claim 1 or 2, characterized in that: the device also comprises a fixed plate, a stripper plate and a driving mechanism; the needle plate is arranged on one side of the fixed plate, which faces the terminal assembly, through a first sliding guide assembly so as to be capable of sliding back and forth relative to the fixed plate along the axial direction; the stripper plate is arranged on one side of the needle plate, which faces the terminal assembly, through a second sliding guide assembly so as to be capable of sliding back and forth along the axial direction, and a position, corresponding to each contact pin, of the stripper plate is provided with a through hole for each contact pin to movably pass through; the driving mechanism is used for driving the needle plate to push the stripper plate to move and reset towards the terminal assembly under the sliding guide effect of the first sliding guide assembly; the contact pin can penetrate through the perforation in the direction of the terminal assembly under the movement of the needle plate in the corresponding direction, the expansion part is highlighted on one side surface of the stripping plate, which faces the terminal assembly, and the contact pin can retract in the direction away from the terminal assembly under the movement of the needle plate in the other corresponding direction.

4. A terminal gripping device according to claim 3, wherein: the needle plate comprises a main body plate and a needle fixing plate which is arranged on one side of the main body plate, which faces the fixing plate, in a split mode; a first elastic piece is arranged between the needle fixing plate and the fixing plate and is used for limiting the movement freedom degree of the needle fixing plate and resetting the needle fixing plate; and/or

5. A terminal gripping device according to claim 3, wherein: the needle plate comprises a main body plate and a needle head fixing plate which is arranged on one side of the main body plate, which faces the fixing plate, and the position, corresponding to each contact pin, of the main body plate is provided with a jack for the contact pin to movably pass through; the first sliding guide assembly comprises a first sliding guide part for enabling the needle fixing plate to be in sliding connection with the fixing plate and a second sliding guide part for enabling the main body plate to be in sliding connection with the fixing plate, and the needle fixing plate and the main body plate can move relative to the fixing plate along the axial direction through the first sliding guide part and the second sliding guide part respectively; the output end of the driving mechanism is connected with the main body plate so as to enable the main body plate to reciprocate along the axial direction, when the terminal is grasped, the driving mechanism enables the main body plate to be close to the needle fixing plate, and the expansion part of the contact pin is highlighted on one side surface of the stripper plate, which faces the terminal assembly, so that the contact pin can be inserted into the opening; when the material is removed, the driving mechanism enables the main body plate to move towards the direction of the terminal assembly so as to be far away from the needle head fixing plate, the main body plate drives the material removing plate to push the terminal assembly, and the contact pins are passively retracted to be separated from the holes due to the pushing force of the material removing plate.

6. The terminal grasping device according to claim 5, wherein: the needle fixing plate comprises a bearing plate and a pressing plate which is detachably arranged on the bearing plate and faces one side face of the fixing plate, a needle mounting hole for mounting a needle of the contact needle is formed in the bearing plate in a penetrating mode along the axial direction, the needle mounting hole is provided with a large hole section which is closer to the fixing plate and a small hole section which is closer to the main body plate, and a bearing platform is formed on the small hole section adjacent to a horizontal plane of the large hole section; the needle head is provided with a large-diameter section assembled in the large-hole section and a small-diameter section assembled in the small-hole section, and a plane of the large-diameter section, which is close to the small-diameter section, is supported at the bearing platform; the pressing plate is used for pressing and holding the bearing plate when the needle head of the contact pin is placed in the needle head mounting hole so as to prevent the needle head from moving towards the direction of the fixing plate.

7. The terminal grasping device according to claim 5, wherein: the needle fixing device is characterized in that an accommodating groove is formed in the main body plate at a position corresponding to the needle fixing plate, and a plurality of positioning columns used for positioning the needle fixing plate are arranged at the bottom surface of the accommodating groove.

8. The terminal grasping device according to claim 5, wherein: the driving mechanism is defined as a driving air cylinder with a cylinder body connected with the fixed plate, and a piston rod of the driving air cylinder movably penetrates through the fixed plate along the axial direction; the second sliding guide piece comprises a second sliding sleeve penetrating through the fixed plate along the axial direction, a second guide rod movably penetrating through the second sliding sleeve and a connecting plate arranged outside one side, far away from the terminal assembly, of the fixed plate, the connecting plate is connected with a piston rod of the driving cylinder and is connected with one end, penetrating out of the fixed plate, of the second guide rod, and one end, facing the terminal assembly, of the second guide rod is connected with the main body plate; when a piston rod of the driving cylinder moves along an axis line in the direction of the terminal assembly, the connecting plate and the second guide rod are driven to move in the direction of the terminal assembly, so that the main body plate pushes the stripper plate in the direction of the terminal assembly, the stripper plate compresses the terminal assembly at a target position, and the contact pin is passively retracted due to the movement of the piston rod so as to enable the expansion part to be separated from the opening; when the piston rod of the driving cylinder moves along the axis in a direction away from the terminal assembly, the main body plate drives the stripper plate to return so that the expansion part of the pin is highlighted on the stripper plate towards one side surface of the terminal.