Automatic assembly equipment for single-phase terminal block copper nut sealing strip

Abstract

The invention discloses an automatic assembly device for a single-phase terminal row copper nut sealing strip, and specifically relates to the technical field of electric energy meter production equipment. The device comprises an equipment main body and a single-phase terminal. The equipment main body comprises a conveying device and an extrusion part. The extrusion part comprises a top pressure plate, and a top pressure groove is provided on the top pressure plate. The extrusion part is located at a lifting block behind the top pressure plate, and side pressure plates are fixedly connected to the side walls of the lifting block respectively. The stretching part comprises a yielding groove, and the stretching part also comprises a moving box arranged in the yielding groove, and a clamping plate is slidably connected to the upper side of the moving box. The torsion part comprises four accommodating grooves with openings facing upwards, and the accommodating groove is provided at the inflection point of the top pressure plate. The torsion part comprises a supporting block arranged in the accommodating groove, and a torsion plate is hinged on the upper end of the supporting block. During the installation process of the sealing strip, the invention prevents the sealing strip from having a gap with the long strip groove after installation, and optimizes the situation that the sealing strip is not easily installed in place at the inflection point, thereby improving the assembly qualification rate of the product.

Description

Technical Field

[0001] The invention relates to the technical field of electric energy meter production equipment, and more specifically to automatic assembly equipment for single-phase terminal block copper nut sealing strips. Background Art

[0002] An electric energy meter is an instrument used to measure the amount of electricity used, also known as an watt-hour meter. As a settlement and metering terminal for electric energy use, it is an indispensable measuring instrument in daily life. Existing electric energy meters usually include a shell, a PCB board arranged in the shell, and a single-phase terminal connected to the PCB board. The main function of the single-phase terminal is to connect the internal current coil and voltage coil of the electric energy meter with the external circuit. It is an output port facing the user. The single-phase terminal usually includes a terminal box, a box cover, a wiring terminal, a special-shaped nut and a screw. The wiring terminal is installed in the terminal hole, and the special-shaped nut is embedded in the blind hole on the top surface of the box body. In order to prevent dust and water, a multi-bend and continuous long groove will be opened from the bottom surface to the side surface of the single-phase terminal, and a special-shaped sealing strip will be installed in the long groove.

[0003] For example, a Chinese patent document with application number 202210455277.8 discloses a terminal button box parts assembly machine, which relates to the technical field of electric energy meter production equipment, and solves the problem of low assembly efficiency caused by relying on manual assembly of sealing strips and nuts at this stage. It includes a positioning device, a wire clamping and traction device, a front forming device, a rear forming device, a top pressure device and a side pressure device; the positioning device is used to position the terminal button box to the positioning station, the wire clamping mechanism clamps the sealing line at the wire entry port and crosses the positioning station, the front forming plate and the rear forming plate approach each other to shape the sealing line, the top pressure plate enters the cavity to press the shaped sealing line into the long groove on the bottom surface of the terminal button box, and the side pressure plate rises to press the sealing line from bottom to top into the long groove on the side of the bottom of the terminal button box. At the same time, the sealing line is cut off by the cutting device to realize the automatic assembly of special-shaped sealing strips, which greatly improves production efficiency, has high and stable assembly quality, and improves product qualification rate.

[0004] Although the above patent can improve the efficiency of assembly, in the actual sealing strip assembly process, since the shape of the long groove is a "J" shape with four inflection points, the sealing strip needs to be squeezed first so that the sealing strip is squeezed into a "J" shape before being installed in the long groove. In the process of pushing the sealing strip into the long groove, since the sealing strip and the long groove are interference fit and the sealing strip is a cylindrical rubber strip, the top pressure plate will push the major diameter of the sealing strip to contact the side wall of the long groove first. The diameter of the sealing strip is larger than the width of the long groove. The side wall of the long groove will generate friction on the sealing strip. At the same time, the top pressure plate pushes the lower end face of the sealing strip to deform, so that the sealing strip is pressed into the long groove, and then when the top pressure plate After the pressure plate completes the lifting step, it moves down. When it moves down and removes the external force, the sealing strip is deformed and reset. There is a situation where the sealing strip is not properly assembled, especially at the four inflection points of the long groove. Since the sealing strip is bent first, the volume of the bending part increases, and the friction between the bending part of the sealing strip and the side wall of the long groove is relatively large. During the installation of the sealing strip, the sealing strip cannot be installed to the bottom of the long groove due to the obstruction of the side wall of the long groove. It is very easy for the sealing strip to be not properly assembled, and the sealing strip will be partially bent during the installation process. When the partially bent sealing strip is installed in the long groove, there will be a gap between the long groove and the sealing strip, which affects the sealing effect of the sealing strip, thereby reducing the qualified rate of the finished product. Summary of the invention

[0005] In order to overcome the above defects of the prior art, the present invention provides an automatic assembly device for a single-phase terminal block copper nut sealing strip to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: comprising a device body and a single-phase terminal, wherein the device body comprises a conveying device for conveying a sealing strip, and further comprises:

[0007] An extrusion part, the extrusion part includes a top pressure plate, the top pressure plate is provided with a top pressure groove with an opening facing upward, the extrusion part includes a lifting block located behind the top pressure plate, two side pressure plates are fixedly connected to the side walls of the lifting block, and the extrusion part also includes a front forming plate and a rear forming plate;

[0008] The stretching part includes two symmetrically arranged yielding grooves with openings facing upwards, the two yielding grooves are both arranged on the top pressure plate, the stretching part also includes a moving box arranged in the yielding groove, the two moving boxes can move back to back as the top pressure plate moves upwards, and the upper side of each moving box is slidably connected to two clamping plates symmetrically arranged front and back, and the two clamping plates are used to clamp the sealing strip;

[0009] The twisting part includes four upward-opening receiving grooves, the receiving grooves are opened at the inflection points of the top pressure plate, the twisting part includes a support block arranged in the receiving groove, the upper end of the support block is hinged with a twisting plate, the upper end of the twisting plate can contact the sealing strip, and the twisting plate is used to drive the sealing strip to twist during the upward movement.

[0010] Preferably, a long slot is provided on the single-phase terminal, and the long slot consists of an I-shaped slot opening downward and two vertical slots, and the lower end of each vertical slot is connected to the I-shaped slot.

[0011] Preferably, the front forming plate is concave, the rear forming plate is convex, and the upper end of the top pressure plate corresponds to the "J"-shaped groove and is arranged in an "J" shape.

[0012] Preferably, each of the clearance grooves is slidably connected with a slide rail with an upward opening, the upper end of the slide rail is slidably connected to the movable box, the lower end of the slide rail is connected to the bottom of the clearance groove via a first spring, and the end of the movable box away from the center of the top pressure plate is connected to the side wall of the clearance groove via a second spring.

[0013] Preferably, a pre-elevating block is slidably connected inside the moving box, the upper end of the pre-elevating block passes through the moving box, and the lower end of the pre-elevating block is connected to the lower side wall of the moving box via a third spring.

[0014] Preferably, two groups of swing rods are hinged on the pre-elevating block, the two groups of swing rods are symmetrically arranged, each group of swing rods is V-shaped, and the two free ends of each group of swing rods are respectively hinged to the clamping plate on the corresponding side.

[0015] Preferably, each of the give way grooves is provided with a push block at one end close to the center of the top pressure plate, and the upper end surface of the push block is an inclined surface. Each of the movable boxes is provided with a pressure block at one end close to the center of the top pressure plate, and the lower end surface of the pressure block is an inclined surface.

[0016] Preferably, the top pressure plate is provided with four circular grooves corresponding to the accommodating grooves one by one, the upper ends of the circular grooves are connected to the accommodating grooves on the corresponding sides, a sliding column is slidably connected in the circular groove, the lower end of the sliding column is connected to the bottom of the circular groove via a fourth spring, the upper end of the sliding column extends out of the circular groove and is fixedly connected to a guide plate, the upper end of the guide plate is hinged with a connecting rod, and the upper end of the connecting rod is hinged to the torsion plate.

[0017] Preferably, the top pressure plate is provided with four through grooves corresponding to the accommodating grooves one by one, and a fixing plate is slidably connected in each of the through grooves. The lower end of the fixing plate passes through the lifting block, and the lower ends of the four fixing plates are fixedly connected via a U-shaped bottom plate, and the lower end of the bottom plate is fixedly connected to the equipment body.

[0018] Preferably, the fixed plate is provided with a plurality of triangular contact blocks evenly distributed in the up and down directions at one end close to the guide plate, the guide plate is provided with a transverse groove with an opening toward the fixed plate, a transverse block is slidably connected in the transverse groove, the transverse block is arranged in a triangular shape at one end facing the fixed plate, and the end of the transverse block away from the fixed plate is connected to the side wall of the transverse groove via a fifth spring.

[0019] Technical effects and advantages of the present invention:

[0020] 1. The present invention cooperates with the top pressure plate, the yield groove, the moving box, the clamping plate, the slide rail, the pressure block and the push block to make the pre-top block contact with the sealing strip in the first stage during the pre-installation of the sealing strip. The sealing strip exerts downward pressure on the pre-top block so that the clamping plate first clamps the sealing strip. In the second stage, as the moving box moves downward relative to the pre-top block, the two moving boxes drive the sealing strip to be straightened via the clamping plate. Before the sealing strip is installed in the long groove, the sealing strip is straightened to avoid partial folding of the sealing strip, which is convenient for the subsequent installation of the sealing strip and avoids the existence of an installation gap between the sealing strip and the long groove, thereby improving the sealing performance of the sealing strip. The straightening operation is a continuous operation, and the straightening state continues until the sealing strip is installed in the long groove.

[0021] 2. The present invention causes the torsion plate to twist up and down through the coordinated arrangement of the accommodating groove, the fixing plate, the contact block, the supporting block, the torsion plate, the connecting rod, the guide plate, the cross block, the fourth spring and the fifth spring. At the same time, during this process, the torsion plate is in an upward state relative to the long groove of the single-phase terminal, so that the torsion plate pushes the sealing strip inflection point to twist when it enters the "J"-shaped groove in the long groove. The torsion plate drives the sealing strip inflection point to twist, and continuously changes the contact position between the sealing strip inflection point and the side wall of the "J"-shaped groove. At the same time, during the torsion of the sealing strip, the position of the major diameter of the sealing strip can be elastically deformed to compress the major diameter of the sealing strip instead of simply compressing the lower end surface of the sealing strip, so as to avoid the sealing strip being stuck at the inflection point of the side wall of the "J"-shaped groove due to its excessive volume at the inflection point, so that the sealing strip can be completely pushed into the long groove, which can effectively avoid the situation where the sealing strip is not installed in place. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0023] Figure 2 It is a schematic structural diagram of the extrusion part, the stretching part, the twisting part and the single-phase terminal of the present invention.

[0024] Figure 3 It is a structural schematic diagram of a single-phase terminal of the present invention.

[0025] Figure 4 It is a schematic structural diagram of the front forming block, the rear forming block and the top pressure plate of the present invention.

[0026] Figure 5 It is a schematic structural diagram of the top pressure plate and the sealing strip of the present invention.

[0027] Figure 6 For the present invention Figure 5 A magnified view of the structure in the middle.

[0028] Figure 7 It is a cutaway front axonometric view of the stretching portion of the present invention.

[0029] Figure 8 It is a cutaway left axonometric view of the stretching portion of the present invention.

[0030] Fig. 9 It is a schematic structural diagram of the pre-elevating block, the clamping plate and the swing rod of the present invention.

[0031] Fig.10 It is a structural schematic diagram of the torsion part of the present invention.

[0032] Fig.11 It is a full-section front axonometric view of the torsion portion of the present invention.

[0033] The accompanying drawings are marked as follows: 1. Equipment body; 2. Single-phase terminal; 21. Long strip groove; 22. I-shaped groove; 23. Vertical groove; 3. Conveying device; 4. Extrusion part; 41. Top pressure plate; 42. Top pressure groove; 43. Lifting block; 44. Side pressure plate; 45. Front forming plate; 46. Rear forming plate; 5. Stretching part; 51. Displacement groove; 52. Moving box; 53. Clamp; 54. Slide rail; 55. First spring; 56. Second Spring; 57, pre-top block; 58, third spring; 59, rocker arm; 510, push block; 511, pressure block; 6, torsion portion; 61, accommodating groove; 62, support block; 63, torsion plate; 64, circular groove; 65, slide column; 66, guide plate; 67, connecting rod; 68, fixed plate; 69, bottom plate; 610, contact block; 611, transverse groove; 612, transverse block; 613, fourth spring; 614, fifth spring. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] Embodiment 1

[0036] During the assembly process of the sealing strip, since the sealing strip is cylindrical and made of rubber, the sealing strip and the long groove are interference fit, the sealing strip will be partially bent during the installation process. When the partially bent sealing strip is installed into the long groove, the volume of the bent part of the sealing strip increases due to the bending, which will increase the difficulty of installing the sealing strip on the one hand, and on the other hand, the increased volume of the bent part of the sealing strip will cause a gap between the bent part of the sealing strip and the side wall of the long groove, affecting the sealing effect of the sealing strip.

[0037] To solve the above technical problems, please refer to Figures 1 to 3 As shown, the first embodiment of the present invention provides an automatic assembly device for a single-phase terminal block copper nut sealing strip, including an equipment body 1 and a single-phase terminal 2. The equipment body 1 includes a conveying device 3 for conveying the sealing strip, and also includes an extrusion part 4, a stretching part 5 and a twisting part 6.

[0038] See also Figures 2 to 9 As shown, the extrusion portion 4 includes a top pressure plate 41, on which a top pressure groove 42 opening upward is provided, the extrusion portion 4 includes a lifting block 43 located behind the top pressure plate 41, and two side pressure plates 44 are fixedly connected to the side walls of the lifting block 43, respectively, the extrusion portion 4 also includes a front forming plate 45 and a rear forming plate 46, the stretching portion 5 includes two symmetrically arranged yielding grooves 51 with openings facing upward, the two yielding grooves 51 are both provided on the top pressure plate 41, the stretching portion 5 also includes a moving box 52 arranged in the yielding groove 51, the two moving boxes 52 can move back to back as the top pressure plate 41 moves upward, each moving box 52 is slidably connected to the upper side with two clamping plates 53 symmetrically arranged front and back, the two clamping plates 53 are used to clamp the sealing strip, and a long strip groove 21 is provided on the single-phase terminal 2, the long strip groove 21 is composed of a "J"-shaped groove 22 opening downward and two vertical grooves 23, and the lower end of each vertical groove 23 is connected to the "J"-shaped groove 22.

[0039] The front forming plate 45 is concave, the rear forming plate 46 is convex, and the upper end of the top pressing plate 41 corresponds to the "X"-shaped groove 22 and is arranged in an "X" shape.

[0040] Each clearance groove 51 is slidably connected with a slide rail 54 with an upward opening, the upper end of the slide rail 54 is slidably connected to the moving box 52, the lower end of the slide rail 54 is connected to the bottom of the clearance groove 51 via a first spring 55, and the end of the moving box 52 away from the center of the top pressure plate 41 is connected to the side wall of the clearance groove 51 via a second spring 56.

[0041] A pre-elevating block 57 is slidably connected inside the moving box 52 . The upper end of the pre-elevating block 57 passes through the moving box 52 , and the lower end of the pre-elevating block 57 is connected to the lower side wall of the moving box 52 via a third spring 58 .

[0042] Two groups of swing rods 59 are hinged on the pre-elevating block 57. The two groups of swing rods 59 are symmetrically arranged. Each group of swing rods 59 is V-shaped. The two free ends of each group of swing rods 59 are respectively hinged to the clamping plate 53 on the corresponding side.

[0043] The elastic force of the third spring 58 is much smaller than the elastic force of the first spring 55. During the pre-assembly process of the sealing strip, the front forming plate 45 cooperates with the rear forming plate 46 to squeeze the sealing strip into a "F" shape, and then the top pressing plate 41 moves upward. During the upward movement of the top pressing plate 41, the two stretching parts 5 are driven to move upward through the giving way groove 51. The pre-top block 57 on the upper side of the stretching part 5 contacts the lower end surface of the sealing strip. As the stretching part 5 drives the moving box 52 and the pre-top block 57 to move upward, the sealing strip has a downward effect on the pre-top block 57. The force causes the pre-top block 57 to move downward relative to the moving box 52, the pre-top block 57 moves downward and compresses the third spring 58, and at the same time, the pre-top block 57 drives the two sets of swing rods 59 to swing relative to each other, and the two sets of swing rods 59 drive the clamping plates 53 to move relative to each other. When the pre-top block 57 moves downward relative to the moving box 52 to the limit position, the two clamping plates 53 move relative to the limit position to clamp the sealing strip, and the two sets of clamping plates 53 on the two stretching parts 5 clamp the sealing strip. As the top pressure plate 41 continues to move upward, the pre-top block 57 has After moving downward to the limit position, the third spring 58 is compressed to the limit position, and the downward force exerted by the sealing strip on the pre-elevating block 57 is transmitted to the moving box 52 and the slide rail 54, so that the moving box 52 drives the slide rail 54 to move downward relative to the top pressure plate 41 and compress the first spring 55, and the moving box 52 drives the pressing block 511 to move downward, and the lower end surface of the pressing block 511 contacts the upper end surface of the pushing block 510, and the pushing block 510 pushes the pressing block 511 to move in the direction away from the pushing block 510 and compresses the second spring 56, so that The pressing blocks 511 in the two give way grooves 51 drive the moving boxes 52 on the corresponding sides to move in the direction away from the pushing blocks 510 during the downward movement, so that the two moving boxes 52 move in opposite directions. The moving boxes 52 stretch the sealing strip through the clamping plate 53 to straighten the sealing strip. The sealing strip is straightened before being installed in the long groove 21 to avoid partial folding of the sealing strip, facilitate the subsequent installation of the sealing strip, and at the same time avoid the existence of an installation gap between the sealing strip and the long groove 21, thereby improving the sealing performance of the sealing strip.

[0044] When the top pressure plate 41 moves downward, since the elastic force of the third spring 58 is much smaller than the elastic force of the first spring 55, as the top pressure plate 41 moves downward, the third spring 58 begins to reset, so that the pre-top block 57 moves upward relative to the moving box 52, and the pre-top block 57 drives the two groups of rocker rods 59 to swing away from each other, so that each group of clamps 53 moves away from each other, so that the clamps 53 no longer clamp the sealing strip, and the clamps 53 are out of contact with the sealing strip. When the pre-top block 57 moves upward to the limit position relative to the moving box 52, as the top pressure plate 41 continues to move downward, the first spring 55 begins to drive the slide rail 54 to reset upward, and the slide rail 54 drives the moving box 52 to move upward relative to the top pressure plate 41. In this process, the moving box 52 resets under the action of the second spring 56, so that the two moving boxes 52 move relative to each other to the limit position, and the straightening of the sealing strip is completed.

[0045] Embodiment 2

[0046] In the actual sealing strip assembly process, since the shape of the long groove 21 is a "J" shape, which has four inflection points, the sealing strip needs to be squeezed first so that the sealing strip is squeezed into a "J" shape before being installed into the long groove 21. In the process of pushing the sealing strip into the long groove 21, the top pressure plate 41 will push the major diameter of the sealing strip to contact the side wall of the long groove 21 first because the sealing strip and the long groove 21 are interference fit and the sealing strip is a cylindrical rubber strip. The diameter of the sealing strip is greater than the width of the long groove 21, and the side wall of the long groove 21 will generate friction on the sealing strip. At the same time, the top pressure plate 41 pushes the lower end surface of the sealing strip to deform, so that the sealing strip is pressed into the long groove 21. Then, when the top pressure plate 41 completes the pushing step, it moves down. The external force is removed and the sealing strip is deformed and reset. There is a situation where the sealing strip is not assembled in place, which affects the qualified rate of finished products.

[0047] See also Figure 5 , Fig.10 and Fig.11 As shown, the torsion portion 6 includes four upwardly opening receiving grooves 61, the receiving grooves 61 are opened at the inflection points of the top pressure plate 41, the torsion portion 6 includes a support block 62 arranged in the receiving groove 61, the upper end of the support block 62 is hinged with a torsion plate 63, the upper end of the torsion plate 63 can contact with the sealing strip, and the torsion plate 63 is used to drive the sealing strip to twist during the upward movement.

[0048] A push block 510 is provided at one end of each clearance groove 51 close to the center of the top pressure plate 41, and the upper end surface of the push block 510 is an inclined surface. A pressure block 511 is provided at one end of each moving box 52 close to the center of the top pressure plate 41, and the lower end surface of the pressure block 511 is an inclined surface. The upper end surfaces of the two push blocks 510 are arranged in an eight-shaped shape, and the lower end surfaces of the two pressure blocks 511 are arranged in an inverted eight-shaped shape.

[0049] Four circular grooves 64 corresponding to the accommodating grooves 61 are provided on the top pressure plate 41. The upper ends of the circular grooves 64 are connected to the accommodating grooves 61 on the corresponding sides. A sliding column 65 is slidably connected in the circular grooves 64. The lower end of the sliding column 65 is connected to the bottom of the circular grooves 64 via a fourth spring 613. The upper end of the sliding column 65 extends out of the circular grooves 64 and is fixedly connected to a guide plate 66. A connecting rod 67 is hinged to the upper end of the guide plate 66. The upper end of the connecting rod 67 is hinged to the torsion plate 63.

[0050] The top pressure plate 41 is provided with four through grooves corresponding to the accommodating grooves 61 , and a fixing plate 68 is slidably connected in each through groove. The lower end of the fixing plate 68 passes through the lifting block 43 , and the lower ends of the four fixing plates 68 are fixedly connected via a U-shaped bottom plate 69 , and the lower end of the bottom plate 69 is fixedly connected to the equipment body 1 .

[0051] A plurality of triangular contact blocks 610 are provided at one end of the fixed plate 68 close to the guide plate 66 and are evenly distributed in the up-down direction. A transverse groove 611 with an opening toward the fixed plate 68 is provided on the guide plate 66. A transverse block 612 is slidably connected in the transverse groove 611. The end of the transverse block 612 facing the fixed plate 68 is triangularly arranged, and the end of the transverse block 612 away from the fixed plate 68 is connected to the side wall of the transverse groove 611 via a fifth spring 614.

[0052] During the installation of the sealing strip, the top pressure plate 41 moves upward, and the top pressure plate 41 pushes the sealing strip upward through the top pressure groove 42. At this time, the sealing strip has been squeezed into a "J" shape by the front forming plate 45 and the rear forming plate 46. The top pressure plate 41 drives the torsion portion 6 to move upward through the accommodating groove 61. The torsion portion 6 moves upward relative to the fixed plate 68. The torsion portion 6 drives the torsion plate 63 to contact the inflection point of the sealing strip. Under the joint action of the torsion plate 63 and the top pressure plate 41, the sealing strip is pushed up to the long strip groove 21 of the single-phase terminal 2. When the sealing strip begins to enter the "J"-shaped groove 22 The receiving groove 61 drives the connecting rod 67 and the guide plate 66 to move upward through the support block 62 and the torsion plate 63, and the guide plate 66 drives the cross block 612 to move upward through the cross groove 611, so that the cross block 612 contacts the contact block 610 on the fixed plate 68. As the cross block 612 moves upward relative to the contact block 610, it can be known from the force analysis that the inclined surface at the lower end of the contact block 610 will push the cross block 612 to move in two directions. In the horizontal direction, the cross block 612 moves toward the direction close to the support block 62 and compresses the fifth spring 614, and in the vertical direction, the cross block 61 The guide plate 66 is driven to move downward relative to the support block 62 through the transverse groove 611, and the guide plate 66 drives the slide column 65 to move downward and compress the fourth spring 613. The guide plate 66 drives the torsion plate 63 to swing downward through the connecting rod 67. As the guide plate 66 moves upward, when the guide plate 66 drives the transverse block 612 to be located at the gap between the two contact blocks 610, the transverse block 612 moves to the limit position in the direction away from the support block 62 under the action of the fifth spring 614, and the guide plate 66 moves relative to the support block 62 under the action of the fifth spring 614 and the action of the slide column 65. As the support block 62 moves upward, the guide plate 66 drives the torsion plate 63 to swing upward via the connecting rod 67, causing the torsion plate 63 to twist up and down. At the same time, during this process, the torsion plate 63 is in an upward state relative to the long groove 21 of the single-phase terminal 2, so that the torsion plate 63 pushes the sealing strip inflection point to enter the "J"-shaped groove 22 in the long groove 21, and twists, constantly changing the contact between the sealing strip inflection point and the side wall of the "J"-shaped groove 22, avoiding the sealing strip from being stuck at the inflection point of the side wall of the "J"-shaped groove due to its excessive volume at the inflection point, which can effectively avoid the situation where the sealing strip is not installed in place.

[0053] When the top pressure plate 41 moves downward, the top pressure plate 41 drives the torsional part 6 to break contact with the sealing strip, and the cutting device cuts the sealing strip. Then the lifting block 43 drives the two side pressure plates 44 to rise, and the side pressure plates 44 squeeze the two sides of the sealing strip into the vertical grooves 23 in the long grooves 21, so that the sealing strip is installed in the long grooves 21.

[0054] In summary, during the installation process of the sealing strip, the present invention can straighten the sealing strip first to avoid partial folding of the sealing strip and prevent the sealing strip from having a gap with the long groove 21 after installation. In addition, during the installation process of the I-shaped sealing strip, the sealing strip can be optimized for the situation where the I-shaped inflection point of the sealing strip is large and the inflection point of the sealing strip is easy to be installed improperly, thereby improving the assembly qualification rate of the product.

[0055] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An automatic assembly device for a single-phase terminal block copper nut sealing strip, comprising a device body and a single-phase terminal, wherein the device body comprises a conveying device for conveying the sealing strip, characterized in that: Also includes: The extrusion part includes a top pressing plate, a top pressing groove with an opening facing upward is formed on the top pressing plate, a lifting block is provided behind the top pressing plate, and two side pressing plates are fixedly connected to the side walls of the lifting block; The stretching part includes two symmetrically arranged yielding grooves with openings facing upwards, the two yielding grooves are both opened on the top pressure plate, and movable boxes are arranged in the yielding grooves. The two movable boxes can move back to back with the upward movement of the top pressure plate, and the upper side of each movable box is slidably connected to two clamping plates symmetrically arranged front and back, and the two clamping plates are used to clamp the sealing strip; The torsion part includes four accommodating grooves with openings facing upwards, the accommodating grooves are arranged at the inflection points of the top pressure plate, a supporting block is arranged in the accommodating groove, the upper end of the supporting block is hingedly connected to the torsion plate, four circular grooves corresponding to the accommodating grooves are arranged on the top pressure plate, the upper end of the circular grooves is connected to the accommodating grooves on the corresponding sides, a sliding column is slidably connected in the circular groove, the lower end of the sliding column is connected to the bottom of the circular groove via a fourth spring, the upper end of the sliding column extends out of the circular groove and is fixedly connected with a guide plate, the upper end of the guide plate is hinged with a connecting rod, the upper end of the connecting rod is hinged with the torsion plate, four through grooves corresponding to the accommodating grooves are arranged on the top pressure plate, the through grooves are all slidably connected with a fixing plate, a plurality of triangular contact blocks uniformly distributed in the up and down directions are arranged on one end of the fixing plate close to the guide plate, a transverse groove is arranged on the guide plate, a transverse block is slidably connected in the transverse groove, the end of the transverse block facing the fixing plate is triangularly arranged, and the end of the transverse block away from the fixing plate is connected to the side wall of the transverse groove via a fifth spring.

2. The single-phase terminal block copper nut sealing strip automatic assembly equipment according to claim 1, characterized in that: A long slot is provided on the single-phase terminal. The long slot consists of an I-shaped slot with an opening facing downward and two vertical slots. The lower end of each vertical slot is connected to the I-shaped slot.

3. The single-phase terminal block copper nut sealing strip automatic assembly equipment according to claim 2, characterized in that: The extrusion part also includes a front forming plate and a rear forming plate, the front forming plate is concave, the rear forming plate is convex, and the upper end of the top pressing plate corresponds to the "J"-shaped groove and is arranged in an "J" shape.

4. The single-phase terminal block copper nut sealing strip automatic assembly equipment according to claim 3, characterized in that: Each of the clearance grooves is slidably connected with a slide rail with an upward opening, the upper end of the slide rail is slidably connected to the moving box, the lower end of the slide rail is connected to the bottom of the clearance groove via a first spring, and the end of the moving box away from the center of the top pressure plate is connected to the side wall of the clearance groove via a second spring.

5. The single-phase terminal block copper nut sealing strip automatic assembly equipment according to claim 4, characterized in that: A pre-elevating block is slidably connected in the moving box, the upper end of the pre-elevating block penetrates the moving box, and the lower end of the pre-elevating block is connected to the lower side wall of the moving box via a third spring.

6. The single-phase terminal block copper nut sealing strip automatic assembly equipment according to claim 5, characterized in that: Two groups of swing rods are hinged on the pre-elevating block. The two groups of swing rods are symmetrically arranged. Each group of swing rods is V-shaped. The two free ends of each group of swing rods are respectively hinged to the clamping plates on the corresponding sides.

7. The single-phase terminal block copper nut sealing strip automatic assembly equipment according to claim 6, characterized in that: A push block is arranged at one end of each displacement groove near the center of the top pressure plate, and the upper end surface of the push block is an inclined surface. A pressure block is arranged at one end of each moving box near the center of the top pressure plate, and the lower end surface of the pressure block is an inclined surface.

8. The single-phase terminal block copper nut sealing strip automatic assembly equipment according to claim 7, characterized in that: The lower end of the fixed plate passes through the lifting block, the lower ends of the four fixed plates are fixedly connected via a U-shaped bottom plate, and the lower end of the bottom plate is fixedly connected to the equipment body.

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