Press fitting device for needle bed

Abstract

The utility model provides a needle bed press-fitting device which comprises a base, a pressing assembly, a driving assembly and a product tray, and the driving assembly comprises a handle, a rack and an elastic reset piece; a supporting seat is arranged on the base, the handle is installed on the supporting seat, the handle comprises a rod part, a holding part and a gear part, the gear part and the holding part are arranged at the two ends of the rod part respectively, the axis of the gear part extends in the left-right direction, and the rack is in sliding fit with the supporting seat and engaged with the gear part; after being stressed, the holding part drives the gear part to rotate, the gear part drives the rack to move, and the rack drives the pressing assembly to vertically move downwards; after the acting force applied to the holding part is cancelled, the elastic reset piece drives the rack to move reversely, and the pressing assembly and the driving assembly are reset; a limiting piece is arranged on the rack and matched with the supporting base in the vertical direction in a limiting mode so as to limit the maximum stroke of the downward pressing assembly. The needle bed press-fitting device is simple in structure, the needle bed is not prone to being damaged, and product quality is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of PCB production, in particular to a needle seat press-fitting device. Background Art

[0002] The multi-pin needle holder of the display board in the air conditioner needs to be fixed on the printed circuit board (PCB). In order to be fixed on the PCB, some pins of the needle holder are designed in a V shape so that they can be fixed on the PCB for welding. Therefore, the needle holder needs to be pressed into the pin hole of the PCB with a large force. At present, manual pressing is often used. The problem with this is that long-term manual pressing of the needle holder can easily cause pain in the hands due to repeated operations, high labor intensity and low efficiency. In addition, there is a hidden danger that the needle holder will float high due to failure to press it in place, resulting in poor quality.

[0003] In addition, the existing needle seat press-fitting tooling has a complex structure and many parts, which can easily cause problems such as incorrect installation or missing installation. The pressing head is made of hard material, which can easily damage the needle seat. In addition, there is no unlimited structure in the pressing stroke, which can easily cause excessive pressing or insufficient pressure, affecting product quality. Utility Model Content

[0004] The utility model aims to provide a needle seat press-fitting device which has a simple structure, is not easy to damage the needle seat and ensures product quality.

[0005] To achieve the above-mentioned purpose, the utility model provides a needle seat pressing device, including a base, a pressing assembly, a driving assembly and a product tray, the pressing assembly and the driving assembly are both installed on the base, the driving assembly drives the pressing assembly to move in the vertical direction, the product tray is located below the pressing assembly and slides with the base in the front-rear direction; the driving assembly includes a handle, a rack and an elastic reset member; a support seat is provided on the base, the handle is installed on the support seat, the handle includes a rod portion, a gripping portion and a gear portion, the gear portion and the gripping portion are respectively arranged at both ends of the rod portion, the axis of the gear portion extends in the left-right direction, the rack slides with the support seat and meshes with the gear portion; after the gripping portion is subjected to force, it drives the gear portion to rotate, the gear portion drives the rack to move, and the rack drives the pressing assembly to move vertically downward; after the force applied to the gripping portion is cancelled, the elastic reset member drives the rack to move in the opposite direction, and the pressing assembly and the driving assembly are reset; a limiting member is provided on the rack, and the limiting member and the support seat are limited in the vertical direction to limit the maximum stroke of the pressing assembly.

[0006] It can be seen from the above scheme that when using the needle holder press-fitting device to fix the multi-pin needle holder on the printed circuit board, first, pull the product tray to the outside of the device, and place the PCB board with the pre-positioned multi-pin needle holder in the product tray; then, push the product tray to the bottom of the pressing assembly; then, pull the gripping part of the handle, the gear part rotates, the gear part drives the rack to move, and the rack drives the pressing assembly to move vertically downward until the limiter abuts against the support seat, and at the same time, the pressing assembly applies force to the multi-pin needle holder, so that the multi-pin needle holder is completely pressed into the pin hole of the PCB board.

[0007] The needle seat pressing device has a simple structure, and the gear part of the handle cooperates with the rack to realize the pressing of the pin needle seat by the pressing component. At the same time, the cooperation between the limiter and the support seat is used to limit the pressing position, thereby ensuring the consistency of the assembly of each pin needle seat, thereby ensuring the quality of the product and greatly improving the production efficiency.

[0008] A preferred solution is that the base is also provided with guide columns extending in the vertical direction, the number of the guide columns is more than two, and the multiple guide columns are arranged along the circumference of the down-pressing component; the down-pressing component is provided with guide holes, the number of the guide holes is greater than or equal to the number of the guide columns, and one guide column and one guide hole are slidably matched in the vertical direction.

[0009] It can be seen that the guidance of the pressing assembly is achieved through the cooperation between the guide column and the guide hole, ensuring that the pressing assembly can move up and down stably.

[0010] A further solution is that the pressing assembly includes a guide plate, a lower pressing plate and a pressing head, the guide hole is arranged on the guide plate, the lower pressing plate is arranged on the bottom wall of the guide plate, and the pressing head is fixed to the guide plate through the lower pressing plate; a positioning groove is opened on the lower pressing plate, the pressing head is arranged in the positioning groove, and the bottom wall of the positioning groove is provided with a positioning hole penetrating in the vertical direction, the bottom wall of the positioning groove cooperates with the guide plate to press the pressing head in the vertical direction, and the bottom end of the pressing head passes through the positioning hole and extends downward.

[0011] It can be seen that the pressure head and the multi-pin needle holder are arranged opposite to each other, so that a force can be applied to the multi-pin needle holder more stably.

[0012] A further solution is that the number of pressing heads is more than two, the product tray is provided with more than two product positioning grooves, the number of product positioning grooves is greater than or equal to the number of pressing heads, one pressing head can correspond to one product positioning groove in the vertical direction; the product positioning groove runs through the product tray in the vertical direction.

[0013] It can be seen that multiple pressing heads can press multiple multi-pin needle holders at the same time, thereby further improving assembly efficiency. The product positioning groove runs through the product tray in the vertical direction, that is, the bottom of the product tray is hollowed out, which can prevent residual foreign matter from colliding with components and causing damage to the multi-pin needle holder.

[0014] A further solution is that the pressing head is provided with a pressing portion, the pressing portion is located at the lower end of the pressing head, and the pressing portion is made of PU.

[0015] It can be seen that the pressing part that contacts the needle seat on the substrate is made of PU, which can achieve soft contact between the pressure head and the needle seat to avoid scratching the needle seat. At the same time, PU has the rigidity of plastic, good strength, small compression deformation, wear resistance and reliable quality.

[0016] A preferred solution is that at least one limit member is respectively provided on the left and right sides of the rack, and two limit surfaces are provided on the support seat, the two limit surfaces are respectively provided on the left and right sides of the rack, and one limit surface and at least one limit member are arranged opposite to each other in the vertical direction.

[0017] It can be seen that the multiple limit members can ensure the force balance on both sides of the rack.

[0018] A preferred solution is that a fixing rod is provided on the support seat, the top end of the elastic reset member is connected to the fixing rod, and the bottom end of the elastic reset member is connected to the top end of the rack.

[0019] It can be seen that this ensures that the direction of the elastic restoring force of the elastic reset member is along the vertical direction. In this way, when the force applied to the gripping portion of the handle is withdrawn, the pressing component can be reset upward by the vertical upward force.

[0020] A preferred solution is that the base is also provided with a slide rail extending along the front-to-back direction, and a front stopper and a rear stopper are respectively provided near both ends of the slide rail, and the product tray is located between the front stopper and the rear stopper; when the product tray contacts the rear stopper, the pressing assembly is opposite to the product tray in the vertical direction.

[0021] It can be seen that the front stopper and the rear stopper can limit the product tray to prevent the product tray from sliding out of the track. At the same time, the product tray can be accurately positioned to facilitate the placement of the circuit board and the positioning between the press-down assembly and the product tray.

[0022] A further solution is that a suction portion is provided on the rear stopper, and a suction portion is provided on the rear wall of the product tray. When the product tray moves to a position in contact with the rear stopper, the suction portion and the suction portion are fixed by suction.

[0023] It can be seen that when the product tray is pushed into the needle seat press-fitting device, the attracted portion at the rear end of the product tray is attracted and positioned with the attracting portion of the rear stopper.

[0024] A preferred solution is that a positioning pin is provided on the product tray, and the top end of the positioning pin is conical; the number of the positioning pins is more than two, and the plurality of positioning pins are arranged along the circumference of the product tray.

[0025] It can be seen that the product tray is positioned by tapered locating pins, which conveniently and simply locates the position of the printed circuit board on the tray. At the same time, the tapered top facilitates the assembly of the printed circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural diagram of the needle seat press-fitting device embodiment of the utility model from the first viewing angle.

[0027] Figure 2 It is a structural diagram of the needle seat press-fitting device embodiment of the utility model from a second viewing angle.

[0028] Figure 3 It is a cross-sectional view of an embodiment of the needle seat press-fitting device of the utility model.

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments. DETAILED DESCRIPTION

[0030] See also Figures 1 to 3 The needle seat pressing device includes a base 1, a pressing component 2, a driving component 3 and a product tray 4.

[0031] The pressing assembly 2, the driving assembly 3 and the product tray 4 are all installed on the base 1. The driving assembly 3 drives the pressing assembly 2 to move in the vertical direction. The product tray 4 is located below the pressing assembly 2 and slides with the base 1 in the front-rear direction.

[0032] The driving assembly 3 includes a handle 31 , a rack 32 and an elastic reset member 33 . A support seat 11 is arranged on the base 1 . The support seat 11 includes a support column 112 and a seat portion 113 . The seat portion 113 is fixed on the support column 112 .

[0033] The handle 31 is mounted on the seat 113. The handle 31 includes a rod 311, a grip 312 and a gear 313. The gear 313 and the grip 312 are respectively arranged at both ends of the rod 311. The axis of the gear 313 extends in the left-right direction. The rack 32 is slidably matched with the seat 113 of the support seat 11 and meshes with the gear 313. After the grip 312 is subjected to force, the gear 313 is driven to rotate, the gear 313 drives the rack 32 to move, and the rack 32 drives the pressing assembly 2 to move vertically downward; after the force applied to the grip 312 is cancelled, the elastic reset member 33 drives the rack 32 to move in the opposite direction, and the pressing assembly 2 and the driving assembly 3 are reset.

[0034] A fixing rod 12 is disposed on the support seat 11 , the top end of the elastic reset member 33 is connected to the fixing rod 12 , and the bottom end of the elastic reset member 33 is connected to the top end of the rack 32 .

[0035] A limit piece 34 is respectively provided on the left and right sides of the rack 32. The limit piece 34 in this embodiment is a screw. Two limit surfaces 111 are provided on the support seat 11. The two limit surfaces 111 are respectively provided on the left and right sides of the rack 32. A limit surface 111 and a limit piece 34 are arranged opposite to each other in the vertical direction. The two limit pieces cooperate in the vertical direction to limit the maximum stroke of the pressing component 2.

[0036] The pressing assembly 2 includes a guide plate 21, a pressing plate 22 and a pressing head 23. Four guide holes 211 are opened on the guide plate 21. The four guide holes 211 are respectively arranged at the four corners of the guide plate 21. The base 1 is also provided with a guide column 13 extending in the vertical direction. There are four guide columns 13. The four guide columns 13 are arranged along the circumference of the pressing assembly 2. One guide column 13 slides with one guide hole 211 in the vertical direction.

[0037] like Figure 3 As shown, the lower pressure plate 22 is arranged on the bottom wall of the guide plate 21, and the pressure head 23 is fixed on the guide plate 21 through the lower pressure plate 22. A plurality of positioning grooves 221 are opened on the lower pressure plate 22, and one pressure head 23 is arranged in one positioning groove 221. The bottom wall of each positioning groove 221 is provided with a positioning hole 222 in the vertical direction. The bottom wall of the positioning groove 221 cooperates with the guide plate 21 to press the pressure head 23 in the vertical direction. The pressing portion 231 at the bottom end of the pressure head 23 passes through the positioning hole 222 and extends downward.

[0038] The number of the pressing heads 23 is more than two, and the product tray 4 is provided with more than two product positioning grooves 41. The number of the product positioning grooves 41 is greater than or equal to the number of the pressing heads 23. One pressing head 23 can correspond to one product positioning groove 41 in the vertical direction. Multiple pressing heads 23 can simultaneously press multiple multi-pin needle seats, thereby further improving assembly efficiency. The product positioning groove 41 passes through the product tray 4 in the vertical direction. Specifically, a through hole 411 is provided on the bottom wall of the product positioning groove 41, that is, the bottom of the product tray 4 is hollowed out, which can prevent residual foreign matter from colliding with components and causing damage to the multi-pin needle seat.

[0039] The pressure head 23 is provided with a pressing portion 231, which is located at the lower end of the pressure head 23, and is made of PU. Preferably, in this embodiment, the entire pressure head 23 is made of PU. By making the pressing portion 231 that contacts the needle seat on the substrate with PU, soft contact between the pressure head 23 and the needle seat can be achieved to avoid scratching the needle seat. At the same time, PU has the rigidity of plastic, has good strength, small compression deformation, and is wear-resistant and reliable in quality.

[0040] The base 1 is also provided with a slide rail 14 extending in the front-to-back direction, and a front stopper 15 and a rear stopper 16 are respectively provided near both ends of the slide rail 14, and the product tray 4 is located between the front stopper 15 and the rear stopper 16. When the product tray 4 contacts the rear stopper 16, the pressing assembly 2 and the product tray 4 are opposite to each other in the vertical direction. The front stopper 15 and the rear stopper 16 can limit the product tray 4 to prevent the product tray 4 from sliding out of the slide rail 14, and at the same time, can accurately position the product tray 4, which is convenient for the placement of the printed circuit board and the positioning between the pressing assembly 2 and the product tray 4.

[0041] The rear block 16 is provided with an attracting portion 161, and the rear wall of the product tray 4 is provided with an attracted portion 42. When the product tray 4 moves to a position in contact with the rear block 16, the attracting portion 161 and the attracted portion 42 are attracted and fixed, thereby achieving the positioning of the product tray 4. In this embodiment, the attracted portion 42 is a magnet, and the material of the attracting portion 161 is a ferromagnetic material, such as metal materials such as iron and nickel.

[0042] Two positioning pins 43 are provided on the product tray 4, and the top ends of the positioning pins 43 are both tapered, and the two positioning pins 43 are arranged along the diagonal lines of the rectangular product tray 4. The product tray 4 is positioned by the tapered positioning pins 43, which conveniently and simply locates the position of the printed circuit board on the product tray 4, and the tapered top ends facilitate the assembly of the printed circuit board.

[0043] When the needle holder press-fitting device is used to fix the multi-pin needle holder on the printed circuit board, first, pull the product tray 4 to the outside of the device, and place the PCB board with the pre-positioned multi-pin needle holder in the product tray 4; then, push the product tray 4 to the bottom of the pressing component 2, at this time, a pressing head 23 and a multi-pin needle holder and a product positioning groove 41 are arranged relative to each other in the vertical direction; then, pull the gripping part 312 of the handle 31, the gear part 313 rotates, the gear part 313 drives the rack 32 to move, and the rack 32 drives the pressing component 2 to move vertically downward until the limiter 34 abuts against the support seat 11, and at the same time, the pressing component 2 applies a force to the multi-pin needle holder, so that the multi-pin needle holder is completely pressed into the pin hole of the PCB board. Then, release the handle 31, and under the action of the elastic restoring force of the elastic reset member 33, the rack 32 is driven to move vertically upward, and the rack 32 drives the pressing component 2 to reset.

[0044] As can be seen from the above, the needle seat pressing device has a simple structure, and through the cooperation between the gear part of the handle and the rack, the pressing assembly can be pressed on the pin needle seat. At the same time, through the cooperation between the limiter and the support seat, the pressing position is limited to ensure the consistency of the assembly of each pin needle seat, thereby ensuring the quality of the product and greatly improving production efficiency.

[0045] In addition, the number of limit members can also be one or more than two. When the number of limit members is more than one, at least one limit member is respectively provided on the left and right sides of the rack, and two limit surfaces are provided on the support seat, and the two limit surfaces are respectively provided on the left and right sides of the rack, and one limit surface is arranged opposite to at least one limit member in the vertical direction. The number of guide columns can also be more than two, and the multiple guide columns are arranged along the circumference of the pressing assembly. The number of guide holes can also be greater than the number of guide columns. The number of positioning pins can also be more than two, and the multiple positioning pins are arranged along the circumference of the product tray. The above changes can also achieve the purpose of the utility model.

[0046] Finally, it should be emphasized that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A needle holder press-fitting device, comprising a base, a pressing assembly, a driving assembly and a product tray, wherein the pressing assembly, the driving assembly and the product tray are all mounted on the base, the driving assembly drives the pressing assembly to move in a vertical direction, and the product tray is located below the pressing assembly and slides with the base in a front-rear direction; Features: The driving assembly includes a handle, a rack and an elastic reset member; The base is provided with a support seat, the handle is installed on the support seat, the handle comprises a rod portion, a grip portion and a gear portion, the gear portion and the grip portion are respectively provided at two ends of the rod portion, the axis of the gear portion extends in the left-right direction, the rack is slidably matched with the support seat and meshed with the gear portion; When the gripping part is subjected to force, the gear part is driven to rotate, the gear part drives the rack to move, and the rack drives the pressing assembly to move vertically downward; After the force applied to the gripping portion is cancelled, the elastic reset member drives the rack to move in the opposite direction, and the pressing assembly and the driving assembly are reset; A limit piece is arranged on the rack, and the limit piece cooperates with the support seat in the upper limit position in the vertical direction to limit the maximum stroke of the pressing assembly.

2. The needle seat press-fitting device according to claim 1, characterized in that: The base is also provided with guide columns extending in the vertical direction, the number of the guide columns is more than two, and the plurality of guide columns are arranged along the circumference of the pressing assembly; The pressing assembly is provided with guide holes, the number of which is greater than or equal to the number of the guide posts, and one guide post is slidably matched with one guide hole in the vertical direction.

3. The needle seat press-fitting device according to claim 2, characterized in that: The pressing assembly comprises a guide plate, a pressing plate and a pressing head; The guide hole is arranged on the guide plate, the lower pressing plate is arranged on the bottom wall of the guide plate, and the pressing head is fixed on the guide plate through the lower pressing plate; A positioning groove is provided on the lower pressure plate, and the pressure head is arranged in the positioning groove. A positioning hole is provided through the bottom wall of the positioning groove in the vertical direction. The bottom wall of the positioning groove cooperates with the guide plate to press the pressure head in the vertical direction, and the bottom end of the pressure head passes through the positioning hole and extends downward.

4. The needle seat press-fitting device according to claim 3, characterized in that: The number of the pressing heads is more than two, the product tray is provided with more than two product positioning grooves, the number of the product positioning grooves is greater than or equal to the number of the pressing heads, and one pressing head can correspond to one product positioning groove in the vertical direction; The product positioning groove passes through the product tray in a vertical direction.

5. The needle seat press-fitting device according to claim 3, characterized in that: The pressing head is provided with a pressing portion, the pressing portion is located at the lower end portion of the pressing head, and the pressing portion is made of PU.

6. The needle seat press-fitting device according to any one of claims 1 to 5, characterized in that: At least one of the limit members is disposed on the left and right sides of the rack respectively, and two limit surfaces are disposed on the support seat, the two limit surfaces are disposed on the left and right sides of the rack respectively, and one limit surface is disposed opposite to at least one of the limit members in the vertical direction.

7. The needle seat press-fitting device according to any one of claims 1 to 5, characterized in that: A fixing rod is arranged on the support seat, the top end of the elastic reset member is connected to the fixing rod, and the bottom end of the elastic reset member is connected to the top end of the rack.

8. The needle seat press-fitting device according to any one of claims 1 to 5, characterized in that: The base is also provided with a slide rail extending along the front-rear direction, and a front stopper and a rear stopper are respectively provided near both ends of the slide rail, and the product tray is located between the front stopper and the rear stopper; When the product tray contacts the rear stopper, the pressing assembly is opposite to the product tray in a vertical direction.

9. The needle seat press-fitting device according to claim 8, characterized in that: The rear block is provided with a suction portion, and the rear wall of the product tray is provided with a suction portion. When the product tray moves to a position in contact with the rear block, the suction portion and the suction portion are sucked and fixed.

10. The needle seat press-fitting device according to any one of claims 1 to 5, characterized in that: The product tray is provided with a positioning pin, and the top end of the positioning pin is tapered; The number of the positioning pins is more than two, and the plurality of positioning pins are arranged along the circumference of the product tray.

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