SMT (Surface Mount Technology) chip mounting jig
By designing an SMT patch fixture with an L-shaped plate and an adjustment rod structure, the problem of the adjustment rod occupying space is solved, the space utilization efficiency of the fixture is improved, and debris is prevented from entering, which is suitable for the SMT patch process.
Patent Information
- Application Number
- CN202422518777.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-18
- Publication Date
- 2025-09-16
- Estimated Expiration
- 2034-10-18
AI Technical Summary
When existing SMT patch fixtures clamp large-sized components, the adjustment rods occupy a large amount of workstation space, affecting space utilization efficiency.
An SMT patch fixture is designed, which adopts an L-shaped plate and an adjustment rod structure. The adjustable limit of the SMT patch is achieved through the combination of positioning screws and clamping screws. The adjustment rod can be hidden outside the base to reduce the occupied space.
It effectively reduces the space occupied by the fixture at the workstation, improves space utilization efficiency, and prevents small debris from entering the threaded connection part by hiding the adjustment rod.
Smart Images
Figure CN223348989U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an SMT patch fixture, belonging to the field of fixtures. Background Art
[0002] SMT, or surface mount technology, is the most popular technique and process in the electronics assembly industry. SMT refers to a series of processes performed on a PCB (printed circuit board). Jigs are commonly used in the SMT process. To adapt jigs to the clamping needs of SMT patches of varying sizes, the position of the stopper structure used to limit the end position of the SMT patch is adjustable. This stopper structure is often connected to the jig base using a combination of set screws and an adjustment rod. To enable the stopper structure to move a considerable distance, the adjustment rod needs to be long. When clamping and limiting larger SMT patches, the longer portion of the adjustment rod is located outside the jig base. This outside position of the adjustment rod takes up considerable space, hindering the utilization of workstation space. Therefore, it is necessary to design an SMT jig with adjustable workstation space. Utility Model Content
[0003] In view of the deficiencies in the prior art, the present invention aims to provide an SMT patch jig to solve the problems raised in the above-mentioned background technology. The present invention enables the jig to adjust the workstation space occupied.
[0004] In order to achieve the above-mentioned purpose, the present invention is implemented through the following technical solutions: an SMT patch fixture, comprising a base, two L-shaped plates for limiting the end position of the SMT patch are slidably installed on the upper surface of the base, the horizontal part of the L-shaped plate is threadedly connected with a plurality of clamping screws for limiting the relative position of the SMT patch and the base, two supports are symmetrically installed on the upper surface of the base, the two L-shaped plates are arranged between the two supports, the opposite surfaces of the two supports are provided with circular holes, and the back surfaces of the vertical parts of the two L-shaped plates are provided with detachable adjustment rods, the adjustment rod passes through the circular hole, a threaded blind hole is provided in the middle of one side of the adjustment rod, the end of the adjustment rod away from the threaded blind hole is connected and fixed with a first threaded head that matches the threaded blind hole, the first threaded head on one adjusting rod is threadedly connected to the threaded blind hole on the other adjusting rod, and the upper surface of the support is threadedly connected with a positioning screw for limiting the relative position of the support and the adjustment rod.
[0005] Furthermore, a vertical hole is opened in the middle position of the upper surface of the support, and the vertical hole is communicated with the circular hole. A straight cylinder is provided on the upper side of the vertical hole, and the lower end of the straight cylinder is connected and fixed to the support. A positioning ring is connected and fixed at the lower position inside the straight cylinder, and the inner surface of the positioning ring is processed with an internal thread. One end of the positioning screw is threadedly connected to the positioning ring, and a column rod is connected and fixed to the lower end of the positioning screw. The lower end of the column rod is inserted in the vertical hole, and the outer diameter of the column rod is the same as the inner diameter of the vertical hole. A blocking ring is provided on the upper side of the positioning ring, and the blocking ring is sleeved on the positioning screw and fixed to the positioning screw, and the blocking ring is slidably installed in the straight cylinder.
[0006] Furthermore, the outer surface of the upper end of the straight cylinder is processed with an external thread, one end of the straight cylinder with the external thread is threadedly connected to a threaded cover, a through hole is opened in the middle of the upper surface of the threaded cover, and the upper end of the clamping screw passes through the through hole.
[0007] Furthermore, a first knob head is connected and fixed to the upper end of the clamping screw, and a second knob head is connected and fixed to the upper end of the positioning screw.
[0008] Furthermore, a clamping plate is provided at the end of the horizontal portion of the L-shaped plate, and the clamping plate is connected and fixed to the L-shaped plate through a connecting piece. A plurality of semicircular first thread grooves are evenly provided on a side of the L-shaped plate facing the clamping plate, and a plurality of semicircular second thread grooves are evenly provided on a side of the clamping plate facing the L-shaped plate. The positioning screw is threadedly connected in the annular space formed by the first thread groove and the second thread groove.
[0009] Furthermore, the connecting member includes a first lug, both ends of the splint are connected and fixed with the first lug, a second lug is provided on one side of the first lug, the second lug is connected and fixed to the L-shaped plate, and the first lug is connected to the second lug by means of a bolt and a nut.
[0010] Furthermore, a second threaded head is installed on the back surfaces of the vertical portions of the two L-shaped plates, and the second threaded head is threadedly connected to a threaded blind hole on an adjusting rod.
[0011] Beneficial effects of the utility model:
[0012] 1. Place the SMT patch on the base, then adjust the distance between the two L-shaped plates so that the two L-shaped plates are in contact with the two ends of the SMT patch respectively. At this time, the L-shaped plate drives the adjustment rod to move along the circular hole on the support. The positioning screw is used to limit the relative position of the adjustment rod and the support so that the relative position of the L-shaped plate and the base remains unchanged. The relative position of the L-shaped plate and the SMT patch is limited by multiple clamping screws to complete the clamping limit of the SMT patch.
[0013] 2. Select an appropriate number of adjusting rods according to the size of the SMT patch, so that the first thread head on one adjusting rod is screwed into the threaded blind hole on another adjusting rod, and so on, to complete the assembly of multiple adjusting rods, so that the structure formed by the multiple adjusting rods is connected to the L-shaped plate. After adjusting the relative position of the L-shaped plate and the base, the length of the structure formed by the multiple adjusting rods on the outside of the base is shorter, so the overall space occupied by the fixture is reduced.
[0014] 3. Make one end of the positioning screw threadedly connected to the positioning ring, and make the barrier ring and positioning ring installed on the positioning screw both in the straight tube. At this time, one end of the column is in the vertical hole. At this time, the threaded connection between the positioning screw and the positioning ring is in a hidden state to prevent small debris from entering the threaded connection between the positioning screw and the positioning ring.
[0015] 4. Use a bolt and a nut to connect the first ear and the second ear to complete the assembly of the splint and the L-shaped plate, so that the clamping screw is threadedly connected in the space formed by the first thread groove and the second thread groove. When the tightening of the clamping screw is affected by the adhesion of small debris, the splint and the L-shaped plate can be separated after separating the nut and the bolt, which makes it convenient to remove the clamping screw from the space formed by the first thread groove and the second thread groove for cleaning. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Other features, objects and advantages of the present invention will become more apparent from the detailed description of the non-limiting embodiments with reference to the following drawings:
[0017] Figure 1 This is a structural diagram of an SMT patch fixture of the present utility model;
[0018] Figure 2 This is a schematic diagram of the assembly of the support, L-shaped plate and base in an SMT patch fixture of the present invention;
[0019] Figure 3 This is a schematic diagram of the assembly of the first thread head and the adjustment rod in an SMT patch fixture of the present invention;
[0020] Figure 4 This is a schematic diagram of the assembly of a column, positioning screws, threaded cover and straight barrel in an SMT patch fixture of the present invention;
[0021] Figure 5 This is a schematic diagram of the assembly of a positioning ring, a barrier ring, and positioning screws in an SMT patch fixture of the present invention;
[0022] Figure 6 This is a three-dimensional diagram of a clamping plate in an SMT patch fixture of the present utility model;
[0023] In the figure: 1-base, 2-first support ear, 3-second support ear, 4-bolt, 5-support, 6-first threaded head, 7-adjusting rod, 8-straight cylinder, 9-threaded cover, 10-positioning screw, 11-clamping screw, 12-clamping plate, 13-L-shaped plate, 14-nut, 15-first thread groove, 16-second threaded head, 17-round hole, 18-vertical hole, 19-column, 20-positioning ring, 21-blocking ring, 22-second threaded groove, 23-threaded blind hole. DETAILED DESCRIPTION
[0024] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.
[0025] See also Figure 1 、 Figure 2 and Figure 6 The utility model provides a technical solution: an SMT patch fixture, comprising a base 1, two L-shaped plates 13 for limiting the end position of the SMT patch are slidably installed on the upper surface of the base 1, the horizontal part of the L-shaped plate 13 is threadedly connected with a plurality of clamping screws 11 for limiting the relative position of the SMT patch and the base 1, wherein the horizontal end of the L-shaped plate 13 is provided with a clamping plate 12, both ends of the clamping plate 12 are connected and fixed with a first ear 2, a second ear 3 is provided on one side of the first ear 2, the second ear 3 is connected and fixed to the L-shaped plate 13, the first ear 2 is connected to the second ear 3 by a bolt 4 and a nut 14, a plurality of semicircular first thread grooves 15 are evenly opened on the side of the L-shaped plate 13 facing the clamping plate 12, and a plurality of semicircular second thread grooves are evenly opened on the side of the clamping plate 12 facing the L-shaped plate 13 The groove 22 makes the positioning screw 10 threadedly connected in the annular space formed by the first thread groove 15 and the second thread groove 22, completing the threaded connection of the positioning screw 10 with the clamping plate 12 and the L-shaped plate 13. The first support ear 2 and the second support ear 3 are connected by matching the bolt 4 and the nut 14 to complete the assembly of the clamping plate 12 and the L-shaped plate 13, so that the clamping screw 11 is threadedly connected in the space formed by the first thread groove 15 and the second thread groove 22. When the tightening of the clamping screw 11 is affected by the adhesion of small debris, the clamping plate 12 and the L-shaped plate 13 can be separated after separating the nut 14 and the bolt 4, so that the clamping screw 11 can be conveniently removed from the space formed by the first thread groove 15 and the second thread groove 22 for cleaning. By connecting and fixing the first knob head to the upper end of the clamping screw 11, it is convenient to tighten the clamping screw 11.
[0026] See Figure 1-Figure 3Two supports 5 are symmetrically installed on the upper surface of the base 1, and two L-shaped plates 13 are arranged between the two supports 5. Circular holes 17 are provided on the opposite surfaces of the two supports 5. Removable adjusting rods 7 that pass through the circular holes 17 are installed on the back sides of the vertical parts of the two L-shaped plates 13. A threaded blind hole 23 is provided in the middle of one side of the adjusting rod 7. The end of the adjusting rod 7 away from the threaded blind hole 23 is connected and fixed with a first threaded head 6 that matches the threaded blind hole 23. A positioning screw 10 for limiting the relative position of the support 5 and the adjusting rod 7 is threadedly connected to the upper end of the positioning screw 10. A second knob head is connected and fixed. A second threaded head 16 is installed on the back sides of the vertical parts of the two L-shaped plates 13, so that the second threaded head 16 is threadedly connected to the threaded blind hole 23 on an adjusting rod 7 to complete the assembly of the L-shaped plate 13 and the adjusting rod 7. The appropriate number of adjusting rods 7 is selected according to the size of the SMT patch so that one adjusting rod The first threaded head 6 on 7 is screwed into the threaded blind hole 23 on the other adjusting rod 7, and so on, to complete the assembly of multiple adjusting rods 7, so that the structure formed by the multiple adjusting rods 7 is connected to the L-shaped plate 13. After adjusting the relative position of the L-shaped plate 13 and the base 1, the length of the structure formed by the multiple adjusting rods 7 on the outside of the base 1 is shorter, so the overall workstation space occupied by the fixture is reduced, so that the SMT patch is placed on the base 1, and then the spacing between the two L-shaped plates 13 is adjusted so that the two L-shaped plates 13 contact the two ends of the SMT patch respectively. At this time, the L-shaped plate 13 drives the adjusting rod 7 to move along the circular hole 17 on the support 5, and the positioning screw 10 is used to limit the relative position of the adjusting rod 7 and the support 5, so that the relative position of the L-shaped plate 13 and the base 1 remains unchanged, and multiple clamping screws 11 are used to limit the relative position of the L-shaped plate 13 and the SMT patch to complete the clamping and limiting of the SMT patch.
[0027] See Figure 1-Figure 5A vertical hole 18 is provided in the middle of the upper surface of the support 5. The vertical hole 18 is communicated with the circular hole 17. A straight cylinder 8 is provided on the upper side of the vertical hole 18, which is arranged concentrically with the vertical hole 18. The lower end of the straight cylinder 8 is connected and fixed to the support 5. A positioning ring 20 is connected and fixed to the lower position of the straight cylinder 8. The inner surface of the positioning ring 20 is processed with an internal thread. One end of the positioning screw 10 is threadedly connected to the positioning ring 20. The lower end of the positioning screw 10 is connected and fixed with a column 19. The lower end of the column 19 is inserted into the vertical hole 18. The outer diameter of the column 19 is the same as the inner diameter of the vertical hole 18. A blocking ring 21 is provided on the upper side of the positioning ring 20. The blocking ring 21 is sleeved on the positioning screw 10 and connected to the positioning screw 10 Fixed, the barrier ring 21 is slidably installed in the straight cylinder 8, the outer surface of the upper end of the straight cylinder 8 is processed with an external thread, and one end of the straight cylinder 8 with the external thread is threadedly connected to the threaded cover 9, and a through hole is opened in the middle position of the upper surface of the threaded cover 9. The upper end of the clamping screw 11 passes through the through hole, so that one end of the positioning screw 10 is threadedly connected to the positioning ring 20, and the barrier ring 21 and the positioning ring 20 installed on the positioning screw 10 are both in the straight cylinder 8. At this time, one end of the column 19 is in the vertical hole 18. At this time, the threaded connection part of the positioning screw 10 and the positioning ring 20 is in a hidden state, preventing small debris from entering the threaded connection part of the positioning screw 10 and the positioning ring 20 at will.
[0028] Although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.
Claims
1. An SMT patch fixture, comprising a base (1), characterized in that: Two L-shaped plates (13) for limiting the end position of the SMT patch are slidably mounted on the upper surface of the base (1). The horizontal portion of the L-shaped plate (13) is threadedly connected with a plurality of clamping screws (11) for limiting the relative position of the SMT patch and the base (1). Two supports (5) are symmetrically mounted on the upper surface of the base (1). The two L-shaped plates (13) are arranged between the two supports (5). The opposite surfaces of the two supports (5) are provided with circular holes (17). The vertical portions of the two L-shaped plates (13) are provided with detachable adjustment rods on their opposite sides. (7), the adjusting rod (7) passes through the circular hole (17), a threaded blind hole (23) is provided at the middle position of one side of the adjusting rod (7), one end of the adjusting rod (7) away from the threaded blind hole (23) is connected and fixed with a first threaded head (6) that matches the threaded blind hole (23), the first threaded head (6) on one adjusting rod (7) is threadedly connected to the threaded blind hole (23) on the other adjusting rod (7), and a positioning screw (10) for limiting the relative position of the support (5) and the adjusting rod (7) is threadedly connected on the upper surface of the support (5).
2. The SMT patch fixture according to claim 1, characterized in that: A vertical hole (18) is provided in the middle of the upper surface of the support (5), and the vertical hole (18) is communicated with the circular hole (17). A straight tube (8) is provided on the upper side of the vertical hole (18) and is arranged concentrically with the vertical hole (18). The lower end of the straight tube (8) is connected and fixed to the support (5). A positioning ring (20) is connected and fixed to the lower position of the straight tube (8). The inner surface of the positioning ring (20) is processed with an internal thread. One end of the positioning screw (10) is threadedly connected to the In the positioning ring (20), the lower end of the positioning screw (10) is connected and fixed with a column (19), the lower end of the column (19) is inserted into the vertical hole (18), the outer diameter of the column (19) is the same as the inner diameter of the vertical hole (18), and a blocking ring (21) is provided on the upper side of the positioning ring (20), the blocking ring (21) is sleeved on the positioning screw (10) and connected and fixed with the positioning screw (10), and the blocking ring (21) is slidably installed in the straight cylinder (8).
3. The SMT patch fixture according to claim 2, characterized in that: The outer surface of the upper end of the straight cylinder (8) is processed with an external thread, and one end of the straight cylinder (8) processed with the external thread is threadedly connected to a threaded cover (9), and a through hole is opened in the middle of the upper surface of the threaded cover (9), and the upper end of the clamping screw (11) passes through the through hole.
4. The SMT patch fixture according to claim 1, characterized in that: The upper end of the clamping screw (11) is connected and fixed with a first knob head, and the upper end of the positioning screw (10) is connected and fixed with a second knob head.
5. The SMT patch fixture according to claim 1, characterized in that: The horizontal end of the L-shaped plate (13) is provided with a clamping plate (12), and the clamping plate (12) is connected and fixed to the L-shaped plate (13) through a connecting piece. A plurality of semicircular first thread grooves (15) are evenly opened on the side of the L-shaped plate (13) facing the clamping plate (12), and a plurality of semicircular second thread grooves (22) are evenly opened on the side of the clamping plate (12) facing the L-shaped plate (13). The positioning screw (10) is threadedly connected in the ring-shaped space formed by the first thread groove (15) and the second thread groove (22).
6. The SMT patch fixture according to claim 5, characterized in that: The connecting member comprises a first lug (2), both ends of the clamping plate (12) are connected and fixed with the first lug (2), a second lug (3) is provided on one side of the first lug (2), the second lug (3) is connected and fixed to the L-shaped plate (13), and the first lug (2) is connected to the second lug (3) by means of a bolt (4) and a nut (14) in cooperation.
7. The SMT patch fixture according to claim 1, characterized in that: The back surfaces of the vertical parts of the two L-shaped plates (13) are both provided with second thread heads (16), and the second thread heads (16) are threadedly connected to a threaded blind hole (23) on an adjusting rod (7).