A compression mechanism of a connector automatic assembly machine

Abstract

The application relates to the technical field of connector assembly, in particular to a pressing mechanism of an automatic connector assembly machine, the bottom end of a movable frame is fixedly connected with a fixed seat, the bottom end of the fixed seat is slidably connected with a pressing head, the upper end of the pressing head is provided with a spring, one end of the spring is fixedly connected to the inner upper end of the fixed seat, the upper end of the pressing head is provided with an extrusion column, the inner upper end of the fixed seat is provided with a pressure sensor, and the upper end of the extrusion column is in contact with the lower surface of the pressure sensor. After the pressing head moves downward by a distance and contacts the connector accessory and presses the same, the reaction force generated in the pressing process pushes the pressing head upward, the pressing head drives the extrusion column to move upward, the extrusion column extrudes the pressure sensor after moving upward, the extrusion force of the pressing head on the connector accessory is detected through the pressure sensor, the pressing strength on the connector accessory is accurately controlled, the connector accessory is prevented from being damaged, and therefore the pressing effect is improved.

Description

Technical Field

[0001] This invention relates to the field of connector assembly technology, and more particularly to a pressing mechanism for an automatic connector assembly machine. Background Technology

[0002] With the rapid development of high-end manufacturing industries such as new energy vehicles, communications, and medical equipment, the demand for connectors, as core electronic connection components, continues to surge. At the same time, the requirements for product precision, reliability, and production efficiency are becoming increasingly stringent. The assembly quality of connectors directly determines the signal transmission stability and service life of electronic devices. Among them, the press-fitting process, as the core link in connector assembly, has become a key factor restricting the quality of connector products.

[0003] In existing technologies, the pressing mechanism of automatic connector assembly machines generally uses fixed-stroke cylinders or simple electric cylinders as driving elements. Since cylinder driving depends on the stability of the air source, air pressure fluctuations will directly lead to changes in output force. Ordinary electric cylinders mostly use position control mode, which is difficult to respond to changes in load resistance in real time. In the actual pressing process, if the pressure applied is insufficient, the interfering amount between the terminal and the plastic shell is too low, resulting in the connector insertion and extraction force not meeting the standard, the contact resistance of the conductive terminal increasing, and affecting the reliability of the electrical connection. If the pressure is too high, it may cause plastic deformation of precision terminals, cracking of the plastic shell, or crushing of the sealing structure, causing functional damage to the parts. The pressure control of the press head on the connector accessories is not accurate, thereby reducing the pressing effect. Summary of the Invention

[0004] The purpose of this invention is to solve the shortcomings of the prior art, which is that the pressure applied by the pressure head to the connector accessories is not accurately controlled, thereby reducing the pressing effect. Therefore, a pressing mechanism for an automatic connector assembly machine is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] Design a pressing mechanism for an automatic connector assembly machine, including a support frame, a movable frame slidably mounted on the support frame, a fixed base fixedly connected to the bottom end of the movable frame, a pressing head slidably connected to the bottom end of the fixed base, a threaded rod mounted on the upper end of the pressing head, the upper end of the threaded rod passing through the fixed base and threadedly connected to a fixing nut, a spring provided at the upper end of the pressing head, one end of the spring fixedly connected to the upper inner end of the fixed base, an extrusion column provided at the upper end of the pressing head, a pressure sensor provided at the upper inner end of the fixed base, and the upper end of the extrusion column contacting the lower surface of the pressure sensor.

[0007] Preferably, the bottom end of the pressing head is provided with a hard alloy layer.

[0008] Preferably, it further includes an air-flushing mechanism, which includes an air pump installed on the upper end of the support frame. The outlet end of the air pump is connected to a first connecting pipe. One end of the first connecting pipe passes through the support frame and is connected to a second connecting pipe. One end of the second connecting pipe is connected to a horizontal pipe, and a nozzle for cleaning the bottom of the press head is connected to the horizontal pipe.

[0009] Preferably, the nozzles are provided in a plurality of them and are distributed at equal intervals along the length of the horizontal tube.

[0010] Preferably, each of the nozzles is inclined upward toward the bottom end of the press head.

[0011] Preferably, one end of each nozzle is connected to a silencer.

[0012] Preferably, it also includes a temperature control mechanism, which includes a cylinder connected between a first connecting pipe and a second connecting pipe. A heating pipe is inserted into the upper end of the cylinder, and a temperature measuring instrument for measuring temperature is provided on one side of the cylinder.

[0013] Preferably, it also includes a collection mechanism, which includes a connecting seat that is inserted into a support frame. A baffle is fixedly connected to one side of the connecting seat, and a collection hopper is fixedly connected to the bottom end of the baffle. A first filter screen is provided on the baffle.

[0014] Preferably, the baffle and the collecting hopper are an integral structure.

[0015] Preferably, the baffle is provided with side frames on both sides, and each side frame is provided with a second filter screen.

[0016] The pressing mechanism of the automatic connector assembly machine proposed in this invention has the following advantages:

[0017] After the pressing head moves downward a certain distance, it contacts the connector accessory and presses it. The reaction force generated during the pressing process pushes the pressing head upward, which in turn drives the extrusion column to move upward. After the extrusion column moves upward, it squeezes the pressure sensor. The pressure sensor detects the extrusion force applied to the connector accessory by the pressing head, and precisely controls the pressing intensity applied to the connector accessory to avoid damaging the connector accessory, thereby improving the pressing effect. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the pressing mechanism of an automatic connector assembly machine proposed in this invention. Figure 1 ;

[0019] Figure 2 This is a schematic diagram of the pressing mechanism of an automatic connector assembly machine proposed in this invention. Figure 2 ;

[0020] Figure 3 This is a schematic diagram of the connection between the fixed base and the pressing head in the pressing mechanism of an automatic connector assembly machine proposed in this invention;

[0021] Figure 4 This is a schematic diagram of the connection between the support frame and the air-pressing mechanism in the pressing mechanism of an automatic connector assembly machine proposed in this invention;

[0022] Figure 5 This is a cross-sectional view of the connection between the support frame and the air-pressing mechanism in the pressing mechanism of an automatic connector assembly machine proposed in this invention.

[0023] Figure 6 This is a schematic diagram of the connection between the air-pressing mechanism and the temperature control mechanism in the pressing mechanism of an automatic connector assembly machine proposed in this invention;

[0024] Figure 7 This is a schematic diagram of the connection between the support frame and the collection mechanism in the pressing mechanism of an automatic connector assembly machine proposed in this invention.

[0025] In the diagram: 1. Support frame; 2. Rotary table; 3. Movable frame; 4. Fixed seat; 5. Mounting plate; 6. Servo motor; 7. Lead screw; 8. Press head; 9. Threaded rod; 10. Fixing nut; 11. Spring; 12. Extrusion column; 13. Pressure sensor; 14. Air-pressing mechanism; 15. Temperature control mechanism; 16. Collection mechanism; 141. Air pump; 142. First connecting pipe; 143. Second connecting pipe; 144. Horizontal pipe; 145. Nozzle; 146. Silencer; 151. Cylinder; 152. Heating tube; 153. Thermometer; 161. Connecting seat; 162. Baffle; 163. Collection hopper; 164. First filter screen; 165. Side frame; 166. Second filter screen. Detailed Implementation

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0027] Example 1: Refer to Figure 1-4A pressing mechanism for an automatic connector assembly machine includes a support frame 1, a rotary table 2 on the support frame 1, a movable frame 3 slidably mounted through the support frame 1, a fixed seat 4 fixedly connected to the bottom end of the movable frame 3, an mounting plate 5 mounted on the upper end of the support frame 1, a servo motor 6 mounted on the upper end of the mounting plate 5, a threaded rod 9 at the output end of the servo motor 6 driving the movable frame 3 to move vertically, a pressing head 8 slidably connected to the bottom end of the fixed seat 4, a hard alloy layer at the bottom end of the pressing head 8, a threaded rod 9 mounted on the upper end of the pressing head 8, the upper end of the threaded rod 9 passing through the fixed seat 4 and threadedly connected to a fixing nut 10, a spring 11 at the upper end of the pressing head 8, one end of the spring 11 fixedly connected to the upper inner end of the fixed seat 4, a pressing column 12 at the upper end of the pressing head 8, a pressure sensor 13 at the upper inner end of the fixed seat 4, and the upper end of the pressing column 12 contacting the lower surface of the pressure sensor 13.

[0028] Work process:

[0029] The connector parts are placed on the rotary table 2 by the loading robot. After the rotary table 2 is started, it drives the connector parts to rotate to the bottom of the pressing head 8.

[0030] After the servo motor 6 is powered on, it drives the threaded rod 9 to rotate. The rotation of the threaded rod 9 causes the movable frame 3 to move downward. The movable frame 3 drives the pressing head 8 to move downward. After the pressing head 8 moves downward a certain distance, it contacts the connector accessory and presses it. The reaction force generated during the pressing process pushes the pressing head 8 upward. The pressing head 8 drives the extrusion column 12 to move upward. After the extrusion column 12 moves upward, it extrudes the pressure sensor 13. The pressure sensor 13 generates pressure after being pressed, thereby measuring the extrusion force applied to the connector accessory by the pressing head 8.

[0031] When the pressure value detected by the pressure sensor 13 reaches the set range, the servo motor 6 drives the threaded rod 9 to rotate in the opposite direction, thereby causing the pressing head 8 to move upward and reset. The pressure sensor 13 detects the squeezing force applied to the connector accessories by the pressing head 8, and accurately controls the pressing intensity applied to the connector accessories to avoid damage to the connector accessories, thereby improving the pressing effect.

[0032] Example 2: When the press-fit head 8 presses the connector parts, softer materials or plating on the surface of the connector parts transfer to the surface of the press-fit head 8, thus affecting the pressing effect of the press-fit head 8. (Refer to...) Figure 3-6As another preferred embodiment of the present invention, the difference from embodiment 1 is that it also includes an air-pumping mechanism 14. The air-pumping mechanism 14 includes an air pump 141, which is installed on the upper end of the support frame 1. The outlet end of the air pump 141 is connected to a first connecting pipe 142. One end of the first connecting pipe 142 passes through the support frame 1 and is connected to a second connecting pipe 143. One end of the second connecting pipe 143 is connected to a horizontal pipe 144. The horizontal pipe 144 is connected to a nozzle 145 for cleaning the bottom of the press head 8. The nozzle 145 is provided in a plurality of them and is evenly distributed along the length of the horizontal pipe 144. Each nozzle 145 is inclined upward toward the bottom end of the press head 8. One end of each nozzle 145 is connected to a silencer 146.

[0033] After the pressing is completed, the pressing head 8 moves upward and resets. After the air pump 141 is powered on and starts, it draws in air. The drawn air passes through the first connecting pipe 142 and the second connecting pipe 143 in sequence and enters the horizontal pipe 144. The gas in the horizontal pipe 144 is released from several nozzles 145. The gas released from the nozzles 145 flushes the bottom of the pressing head 8 to prevent debris from sticking to the bottom of the pressing head 8. At the same time, the silencer 146 silences the nozzles 145 to reduce the noise generated during gas flushing.

[0034] Example 3: When gas is released through nozzle 145 to flush the bottom of the pressing head 8, continuous air purging will cause the temperature of the pressing head 8 to drop significantly. During long-term continuous operation, the length of the pressing head 8 will change due to thermal expansion and contraction, thus affecting the pressing effect. (Refer to...) Figure 4-6 As another preferred embodiment of the present invention, the difference from embodiment 2 is that it also includes a temperature control mechanism 15. The temperature control mechanism 15 includes a cylinder 151, which is connected between the first connecting pipe 142 and the second connecting pipe 143. A heating pipe 152 is inserted into the upper end of the cylinder 151, and a thermometer 153 for measuring temperature is provided on one side of the cylinder 151.

[0035] When the gas is flushed, the heating tube 152 is powered on and started. After the heating tube 152 is started, it heats the gas in the cylinder 151. The temperature measuring instrument 153 detects the temperature of the gas in the cylinder 151. The air is heated when it passes through the cylinder 151, and the purging gas is heated and stabilized at the machine ambient temperature, eliminating the temperature drop of the pressure head 8 caused by the air blowing and maintaining thermal stability.

[0036] Example 4: When gas is used to flush the bottom of the press-fit head 8, debris splashes, and some of the debris falls onto the connector fittings on the rotary table 2, thus affecting the press-fitting of the connector fittings. (Refer to...) Figure 6-7As another preferred embodiment of the present invention, the difference from embodiment 3 is that it also includes a collection mechanism 16. The collection mechanism 16 includes a connecting seat 161, which is inserted into the support frame 1. A baffle 162 is fixedly connected to one side of the connecting seat 161, and a collection hopper 163 is fixedly connected to the bottom end of the baffle 162. The baffle 162 and the collection hopper 163 are integral structures. A first filter screen 164 is provided on the baffle 162, and side frames 165 are provided on both sides of the baffle 162. A second filter screen 166 is provided on each side frame 165.

[0037] The bottom of the gas-purge pressing head 8 is purged, and the debris at the bottom flows with the gas. The gas containing debris comes into contact with the first filter screen 164, which filters the debris in the gas. The filtered debris falls into the collection hopper 163. A portion of the gas containing debris comes into contact with the second filter screen 166, which filters the debris in the gas. The filtered debris falls into the collection hopper 163. By filtering the debris in the gas through the first filter screen 164 and the second filter screen 166, the debris is prevented from falling onto the connector accessories on the rotary table 2, thus not affecting the pressing of the connector accessories.

[0038] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A pressing mechanism for an automatic connector assembly machine, comprising a support frame (1), wherein a movable frame (3) is slidably mounted through the support frame (1), and a fixed base (4) is fixedly connected to the bottom end of the movable frame (3), characterized in that, in: The bottom end of the fixed seat (4) is slidably connected to a press head (8), and the upper end of the press head (8) is equipped with a threaded rod (9). The upper end of the threaded rod (9) passes through the fixed seat (4) and is threadedly connected to a fixing nut (10). The upper end of the press head (8) is provided with a spring (11). One end of the spring (11) is fixedly connected to the upper inner end of the fixed seat (4). The upper end of the press head (8) is provided with an extrusion column (12). The upper inner end of the fixed seat (4) is provided with a pressure sensor (13). The upper end of the extrusion column (12) is in contact with the lower surface of the pressure sensor (13).

2. The pressing mechanism of the connector automatic assembly machine according to claim 1, characterized in that, The bottom end of the press head (8) is provided with a hard alloy layer.

3. The pressing mechanism of the connector automatic assembly machine according to claim 1, characterized in that, It also includes an air-pumping mechanism (14), which includes an air pump (141) installed on the upper end of the support frame (1). The outlet end of the air pump (141) is connected to a first connecting pipe (142). One end of the first connecting pipe (142) passes through the support frame (1) and is connected to a second connecting pipe (143). One end of the second connecting pipe (143) is connected to a horizontal pipe (144). A nozzle (145) for cleaning the bottom of the press head (8) is connected to the horizontal pipe (144).

4. The pressing mechanism of the connector automatic assembly machine according to claim 3, characterized in that, The nozzles (145) are provided in several portions and are evenly distributed along the length of the horizontal tube (144).

5. The pressing mechanism of the connector automatic assembly machine according to claim 4, characterized in that, Each of the nozzles (145) is inclined upward toward the bottom end of the press head (8).

6. The pressing mechanism of the connector automatic assembly machine according to claim 5, characterized in that, Each of the nozzles (145) is connected to a silencer (146) at one end.

7. The pressing mechanism of the connector automatic assembly machine according to claim 6, characterized in that, It also includes a temperature control mechanism (15), which includes a cylinder (151) connected between a first connecting pipe (142) and a second connecting pipe (143). A heating pipe (152) is inserted into the upper end of the cylinder (151), and a thermometer (153) for measuring temperature is provided on one side of the cylinder (151).

8. The pressing mechanism of the connector automatic assembly machine according to claim 1, characterized in that, It also includes a collection mechanism (16), which includes a connecting seat (161) that is inserted into a support frame (1). A baffle (162) is fixedly connected to one side of the connecting seat (161), and a collection hopper (163) is fixedly connected to the bottom of the baffle (162). A first filter screen (164) is provided on the baffle (162).

9. The pressing mechanism of the connector automatic assembly machine according to claim 8, characterized in that, The baffle (162) and the collection hopper (163) are an integral structure.

10. The pressing mechanism of the connector automatic assembly machine according to claim 9, characterized in that, The baffle (162) is provided with side frames (165) on both sides, and each side frame (165) is provided with a second filter screen (166).

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