Positioning and clamping device and electroplating equipment

Abstract

The utility model provides a positioning and clamping device and electroplating equipment, and relates to the technical field of chip sealing and testing process equipment. The positioning and clamping device comprises a positioning wheel, a pressing wheel, a base, a first connecting plate, a second connecting plate and an extension spring; the first connecting plate is fixedly connected with the base, and the second connecting plate is hinged to the base. The positioning wheel is rotatably mounted on the first connecting plate, and the pressing wheel is rotatably mounted on the second connecting plate; and the positioning wheel is parallel to a rotating shaft of the pressing wheel. The two ends of the extension spring are connected with the first connecting plate and the second connecting plate correspondingly, so that the positioning wheel and the pressing wheel tend to get close to each other, and the steel belt between the positioning wheel and the pressing wheel is clamped. And an extension part is arranged on the positioning wheel, when the steel belt moves, the positioning wheel and the pressing wheel synchronously rotate, the extension part can also be tightly attached to the surface of the steel belt, the contact area with the steel belt is increased, the clamping stability of the steel belt is improved, and then the conveying stability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of chip packaging and testing process equipment, in particular to a positioning and clamping device and electroplating equipment. Background Technique

[0002] Chip packaging and testing is the last process in the integrated circuit manufacturing process. Its main task is to package the chip and conduct various tests such as functions, performance, and reliability to ensure that the quality and performance of the chip meet the design requirements. Chip packaging and testing is one of the key links in integrated circuit manufacturing, directly affecting the quality and cost of the chip. As the chip carrier of the integrated circuit, the lead frame is a key structural component that realizes the electrical connection between the internal circuit leads of the chip and the external leads with the help of bonding materials (gold wire, aluminum wire, copper wire) to form an electrical loop, and it plays a role as a bridge for external connection. The feeding, transporting, and clamping integrated feeding equipment of the lead frame electroplating equipment includes a bin feeding mechanism, a track conveying mechanism, a steel strip conveying mechanism, and a flipping and clamping mechanism that flips and clamps the lead frame of the track conveying mechanism to the steel strip conveying mechanism for forward conveying. Among them, the steel strip conveying mechanism includes a positioning and clamping device for positioning and clamping the steel strip.

[0003] However, the clamping stability of the positioning wheel assembly for the steel strip in the prior art is relatively low, reducing the stability of conveying. Content of the Utility Model

[0004] The purpose of the utility model is to provide a positioning and clamping device and electroplating equipment to alleviate the technical problem that the clamping stability of the positioning wheel assembly for the steel strip in the prior art is relatively low, reducing the stability of conveying.

[0005] The positioning and clamping device provided by the utility model includes a positioning wheel, a pressing wheel, a base, a first connecting plate, a second connecting plate, and a tension spring;

[0006] The first connecting plate is fixedly connected to the base, and the second connecting plate is hinged to the base; the positioning wheel is rotatably installed on the first connecting plate, and the pressing wheel is rotatably installed on the second connecting plate;

[0007] The rotation axes of the positioning wheel and the pressing wheel are arranged in parallel;

[0008] Both ends of the tension spring are respectively connected to the first connecting plate and the second connecting plate, so that the positioning wheel and the pressing wheel have a tendency to approach each other to clamp the steel strip between the positioning wheel and the pressing wheel;

[0009] An extension part is provided on the positioning wheel. The extension part is coaxial with the positioning wheel and has the same diameter as the positioning wheel. An annular groove is provided on the extension part, and the annular groove is arranged along the circumferential direction of the extension part.

[0010] Further, a plurality of positioning protrusions are evenly spaced along the circumferential direction of the positioning wheel, and the plurality of positioning protrusions are used for meshing with the transmission holes on the steel belt.

[0011] Further, an avoidance groove is provided on the pressing wheel. The avoidance groove is annularly arranged along the circumferential direction of the pressing wheel. The avoidance groove is correspondingly arranged with the plurality of positioning protrusions.

[0012] Further, the positioning and clamping device further includes a first rotating shaft and a first connecting plate. The first connecting plate is fixedly connected to the first rotating shaft and the base respectively. The positioning wheel is connected to the first connecting plate through the first rotating shaft.

[0013] Further, both ends of the tension spring are detachably and fixedly connected to the positioning wheel and the pressing wheel through a first connecting portion and a second connecting portion respectively.

[0014] Further, the first connecting portion and / or the second connecting portion each include one or more connection points.

[0015] Further, the first connecting portion and / or the second connecting portion each include a plurality of connection points spaced along the extending direction of the tension spring.

[0016] Further, a fixing ring is provided at the connection point, and the tension spring is hooked on the fixing ring.

[0017] Further, the first connecting portion and / or the second connecting portion each include a fixing snap ring and one or more fixing grooves for cooperating with the fixing snap ring.

[0018] Further, a rubber ring is sleeved on the pressing wheel along the circumferential direction.

[0019] An electroplating device includes a frame and at least two of the above-mentioned positioning and clamping devices, and at least two of the positioning and clamping devices are installed on the frame.

[0020] For the positioning and clamping device and the electroplating device provided by the present utility model, the positioning wheel and the pressing wheel are respectively arranged on two sides of the steel belt. Under the pulling force of the tension spring, both the positioning wheel and the pressing wheel are tightly attached to the surface of the steel belt. During the movement of the steel belt, the positioning wheel and the pressing wheel rotate synchronously. Since the extension part is coaxial with the positioning wheel and has the same diameter as the positioning wheel, the extension part can also be tightly attached to the surface of the steel belt, increasing the contact area with the steel belt, thereby improving the clamping stability of the steel belt and further improving the conveying stability. In addition, the setting of the annular groove can prevent the extension part from interfering with the protrusions on the steel belt, enabling the steel belt to be smoothly conveyed. Description of the Drawings

[0021] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 The front view of the positioning and clamping device provided by the embodiment of the present invention;

[0023] Figure 2 The side view of the positioning and clamping device provided by the embodiment of the present invention;

[0024] Figure 3 The top view of the positioning and clamping device provided by the embodiment of the present invention;

[0025] Figure 4 Provided by the embodiment of the present invention Figure 3 The cross-sectional view at A-A in

[0026] Reference numerals: 1 - positioning wheel; 2 - pressing wheel; 3 - base; 4 - tension spring; 5 - extension part; 6 - annular groove; 7 - positioning protrusion; 8 - lead frame; 9 - transmission hole; 10 - avoidance groove; 11 - first rotating shaft; 12 - first connecting plate; 13 - second rotating shaft; 14 - second connecting plate; 15 - first connecting part; 16 - second connecting part; 17 - connection point; 18 - fixing ring; 19 - rubber ring; 20 - clip spring; 21 - hole; 22 - steel strip. Specific embodiments

[0027] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments. Obviously, the described embodiments are some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0028] As Figures 1-4 shown, the positioning and clamping device provided by the embodiment of the present invention includes a positioning wheel 1, a pressing wheel 2, a base 3, a first connecting plate 12, a second connecting plate 14, and a tension spring 4; the first connecting plate 12 is fixedly connected to the base 3, and the second connecting plate 14 is hinged to the base 3; the positioning wheel 1 is rotatably installed on the first connecting plate 12, and the pressing wheel 2 is rotatably installed on the second connecting plate 14; the rotating shafts of the positioning wheel 1 and the pressing wheel 2 are arranged in parallel.

[0029] Both ends of the tension spring 4 are respectively connected to the first connecting plate 12 and the second connecting plate 14, so that the positioning wheel 1 and the pressing wheel 2 tend to approach each other, thereby being able to clamp and convey the steel strip between the positioning wheel 1 and the pressing wheel 2. An extension part 5 is arranged on the positioning wheel 1. The extension part 5 is coaxial with the positioning wheel 1 and has the same diameter as the positioning wheel 1; an annular groove 6 is arranged on the extension part 5, and the annular groove 6 is arranged along the circumferential direction of the extension part 5. Among them, the extension part 5 and the positioning wheel 1 can be integrally formed.

[0030] The length of the extension part 5 should be such that it does not contact the clip spring 20 on the steel strip 22.

[0031] The reason for setting the annular groove 6 is to avoid the steel strip joint (such as a rivet) of the steel strip 22.

[0032] A plurality of holes 21 are arranged on the steel strip 22. On the one hand, it can facilitate stress release, and on the other hand, it can assist in the connection of the steel strip, so as to fix the steel strip through the connecting piece.

[0033] Exemplarily, the plurality of holes 21 are dispersedly arranged in one row, two rows or more rows along the length direction of the steel strip 22.

[0034] Furthermore, a rubber ring 19 is sleeved on the pressing wheel 2 along the circumferential direction. The setting of the rubber ring 19 can prevent the pressing wheel 2 from directly contacting the steel strip 22 and causing wear of the steel strip 22.

[0035] For the positioning and clamping device provided by the embodiment of the present utility model, the positioning wheel 1 and the pressing wheel 2 are respectively arranged on two sides of the steel strip 22. Under the action of the tension of the tension spring 4, both the positioning wheel 1 and the pressing wheel 2 are closely attached to the surface of the steel strip 22. During the movement of the steel strip 22, the positioning wheel 1 and the pressing wheel 2 rotate synchronously. Since the extension part 5 is coaxial with the positioning wheel 1 and has the same diameter as the positioning wheel 1, the extension part 5 can also be closely attached to the surface of the steel strip 22, increasing the contact area with the steel strip 22, thereby improving the clamping stability of the steel strip 22 and further improving the conveying stability. In addition, the setting of the annular groove 6 can prevent the extension part 5 from interfering with the steel strip joint of the steel strip 22, enabling the steel strip 22 to be conveyed smoothly.

[0036] On the basis of the above embodiment, further, a plurality of positioning protrusions 7 are evenly spaced along the circumferential direction of the positioning wheel 1, and the plurality of positioning protrusions 7 are used to engage with the transmission holes 9 on the steel strip 22.

[0037] The positioning protrusion 7 is hemispherical to prevent the edge from scratching the steel strip 22.

[0038] In this embodiment, the movement of the steel strip 22 and the rotation of the positioning wheel 1 are carried out synchronously, and the plurality of positioning protrusions 7 are sequentially engaged with the transmission holes 9 of the steel strip 22, thereby realizing the positioning of the steel strip 22.

[0039] On the basis of the above embodiments, further, an avoidance groove 10 is provided on the pressing wheel 2; the avoidance groove 10 is annularly arranged along the circumferential direction of the pressing wheel 2; the avoidance groove 10 is correspondingly arranged with a plurality of positioning protrusions 7.

[0040] Among them, the groove width of the avoidance groove 10 should be greater than the width of the positioning protrusion 7 on the steel strip 22, and the depth should be greater than the height of the positioning protrusion 7 on the steel strip 22.

[0041] In this embodiment, when the positioning protrusion 7 meshes with the transmission hole 9, the positioning protrusion 7 will pass through and protrude from the transmission hole 9. The setting of the avoidance groove 10 can prevent the pressing wheel 2 from colliding with the positioning protrusion 7 to generate interference, and can smoothly convey the steel strip 22.

[0042] On the basis of the above embodiments, further, the positioning and clamping device further includes a first rotating shaft 11 and a first connecting plate 12; the first connecting plate 12 is fixedly connected to the first rotating shaft 11 and the base 3 respectively; the positioning wheel 1 is connected to the first connecting plate 12 through the first rotating shaft 11.

[0043] Specifically, the first connecting plate 12 is fixedly connected to the base 3 through one or more bolts.

[0044] The positioning wheel 1 is sleeved on the first rotating shaft 11 and can rotate axially along the first rotating shaft 11.

[0045] Further, the positioning and clamping device further includes a second rotating shaft 13 and a second connecting plate 14; the second rotating shaft 13 is fixedly connected to the second connecting plate 14, the second connecting plate 14 is hinged to the base 3, and the pressing wheel 2 is connected to the second connecting plate 14 through the second rotating shaft 13.

[0046] Specifically, the second connecting plate 14 is hinged to the base 3 through a hinge shaft.

[0047] The pressing wheel 2 is sleeved on the second rotating shaft 13 and can rotate axially along the second rotating shaft 13.

[0048] In this embodiment, during the operation of the device, the positioning wheel 1 and the pressing wheel 2 rotate along the first rotating shaft 11 and the second rotating shaft 13 respectively. Since the positioning wheel 1 is fixedly connected to the base 3 and the pressing wheel 2 is movably connected to the base 3, under the pulling force of the tension spring 4, the pressing wheel 2 approaches the positioning wheel 1 as much as possible, so as to clamp the steel strip 22.

[0049] On the basis of the above embodiments, further, the two ends of the tension spring 4 are detachably fixedly connected to the positioning wheel 1 and the pressing wheel 2 through a first connecting portion 15 and a second connecting portion 16 respectively.

[0050] The detachable fixed connection method can facilitate the user to disassemble, assemble and replace the tension spring 4 according to actual needs.

[0051] Specifically, the first connecting portion 15 and the second connecting portion 16 are respectively arranged on the first connecting plate 12 and the second connecting plate 14.

[0052] The first connecting portion 15 and / or the second connecting portion 16 includes a fixed snap ring and one or more fixing grooves for cooperating with the fixed snap ring. In the case of multiple fixing grooves, the multiple fixing grooves are arranged at intervals along the extending direction of the tension spring 4 on the first connecting plate 12. The user can embed and snap the fixed snap ring into one of the fixing grooves, with a part of the fixed snap ring protruding from the fixing groove, and then hook the tension spring 4 on the fixed snap ring to fixedly connect the tension spring 4 with the first connecting plate 12, fixing the relative positions of the tension spring 4 and the positioning wheel 1.

[0053] The second connecting portion 16 can be arranged in the same way as above, and will not be elaborated here.

[0054] Alternatively, the first connecting portion 15 and / or the second connecting portion 16 includes one or more connection points 17.

[0055] When there are multiple connection points 17 on the first connecting portion 15 or the second connecting portion 16, the multiple connection points 17 are arranged at intervals along the extending direction of the tension spring 4.

[0056] Furthermore, a fixing buckle for fixing one end of the tension spring 4 can be arranged at the connection point 17, or a fixing ring 18 is arranged at the connection point 17, and the tension spring 4 is fixed on the fixing buckle or hooked on the fixing ring 18.

[0057] It should be noted that either the first connecting portion 15 or the second connecting portion 16 can be selected to set multiple connection points 17, or both can set multiple connection points 17, as long as the fixed position change of the tension spring 4 can be achieved.

[0058] In this embodiment, during the use process, the user can fix both ends of the tension spring 4 on the preset connection points 17 according to actual needs to ensure that during the rotation of the positioning wheel 1 and the pressing wheel 2, the steel strip 22 is always in an extruded state, and thus better plays a role in pressing and clamping the steel strip 22. This setting enables the device to be applicable to steel strips 22 of different thicknesses and tension springs 4 of different models, with more convenient operation and stronger applicability.

[0059] The following briefly describes the working process of the present utility model:

[0060] See Figures 1-4, in addition to the transmission holes 9 and the holes 21, the steel strip 22 is also provided with a hollowed-out part for connecting the lead frame 8. At the same time, the lead frame 8 is also provided with a hollowed-out part. The clip spring fixes the connection between the lead frame 8 and the steel strip 22 by passing through the hollowed-out part on the lead frame 8 and the hollowed-out part on the steel strip, so that when the steel strip moves, the lead frame 8 is driven to move.

[0061] On the other hand, the present utility model provides an electroplating device, which includes a frame and at least one of the foregoing positioning and clamping devices, and at least one of the foregoing positioning and clamping devices is installed on the frame. Preferably, the number of the positioning and clamping devices is at least two.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and are not intended to limit them; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present utility model.

Claims

1. A positioning and clamping device, characterized in that: The positioning and clamping device comprises a positioning wheel, a pressing wheel, a base, a first connecting plate, a second connecting plate and a tension spring; The first connecting plate is fixedly connected to the base, and the second connecting plate is hinged to the base; the positioning wheel is rotatably mounted on the first connecting plate, and the pressing wheel is rotatably mounted on the second connecting plate; The positioning wheel is arranged parallel to the rotating shaft of the pressing wheel; The two ends of the tension spring are respectively connected to the first connecting plate and the second connecting plate, so that the positioning wheel and the pressing wheel have a tendency to approach each other to clamp the steel belt between the positioning wheel and the pressing wheel; The positioning wheel is provided with an extension portion, which is coaxial with the positioning wheel and has the same diameter as the positioning wheel; the extension portion is provided with an annular groove, which is arranged along the circumference of the extension portion.

2. The positioning and clamping device according to claim 1, characterized in that: A plurality of positioning protrusions are evenly spaced along the circumference of the positioning wheel, and the plurality of positioning protrusions are used to engage with the transmission holes on the steel belt.

3. The positioning and clamping device according to claim 2, characterized in that: The pressure wheel is provided with an avoidance groove; the avoidance groove is arranged in a ring shape along the circumference of the pressure wheel; the avoidance groove is arranged corresponding to the plurality of positioning protrusions.

4. The positioning and clamping device according to any one of claims 1 to 3, characterized in that: Two ends of the tension spring are detachably fixedly connected to the first connecting plate and the second connecting plate through a first connecting portion and a second connecting portion, respectively.

5. The positioning and clamping device according to claim 4, characterized in that: The first connection portion and / or the second connection portion each include one or more connection points.

6. The positioning and clamping device according to claim 5, characterized in that: The first connection portion and / or the second connection portion each include a plurality of connection points spaced apart along an extension direction of the tension spring.

7. The positioning and clamping device according to claim 5, characterized in that: A fixing ring is arranged at the connection point, and the tension spring is hooked on the fixing ring.

8. The positioning and clamping device according to claim 4, characterized in that: The first connecting portion and / or the second connecting portion both include a fixing snap ring and one or more fixing grooves for matching with the fixing snap ring.

9. The positioning and clamping device according to claim 1, characterized in that: A rubber ring is sleeved on the pressing wheel along the circumferential direction.

10. An electroplating device, characterized in that: The electroplating equipment includes a frame and a positioning and clamping device as described in any one of claims 1-9.

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