Automatic assembly machine for refrigerator door switches and automatic torsion spring feeding mechanism

Abstract

The present invention relates to an automatic assembly machine for refrigerator door switches and an automatic torsion spring feeding mechanism thereof, and relates to the technical field of refrigerator door switch production and manufacturing, and comprises a mounting plate and an automatic torsion spring feeder for automatically feeding torsion springs, wherein a transfer assembly for transferring torsion springs at an outlet of the automatic torsion spring feeder, a ejection assembly for ejecting torsion springs on the transfer assembly, a positioning clamping assembly for clamping torsion springs ejected by the ejection assembly, a loading clamping assembly for loading and clamping torsion springs on the positioning clamping assembly, and a displacement assembly for performing lateral and longitudinal reciprocating motion on the loading clamping assembly are respectively installed on the mounting plate. The present invention has the effects of improving the production and processing efficiency of refrigerator door switches and reducing labor costs.

Description

Technical Field

[0001] The invention relates to the technical field of refrigerator door switch production and manufacturing, in particular to an automatic assembly machine for refrigerator door switches and an automatic torsion spring feeding mechanism thereof. Background Art

[0002] The refrigerator door light switch is a common switch installed inside the refrigerator. It controls the indoor light inside the refrigerator by sensing the opening / closing of the door. For example, if the refrigerator door is closed, the indoor light is turned off; if the refrigerator door is opened, the indoor light is automatically turned on to provide a certain amount of lighting inside the refrigerator.

[0003] For example, a Chinese patent with authorization announcement number CN201655605U and publication date November 24, 2010 discloses a refrigerator door switch, including: a base, a button is arranged at the upper end of the base, a mounting hole is arranged in the base cavity, a torsion spring is arranged in the mounting hole, the torsion spring arm on the torsion spring is against the lower end of the button, a fixed terminal is arranged on one side of the bottom of the cavity of the base, a static contact is arranged on the fixed terminal, a moving spring is arranged on the other side of the bottom of the cavity of the base, a moving contact cooperating with the static contact is arranged on the moving spring, one end of the moving spring leading out of the base is a terminal, the other end of the moving spring cooperates with one end of a positioning pin arranged in the base cavity, an arc-shaped clearance groove and a contact boss are arranged on the end where the positioning pin and the moving spring cooperate with each other, the other end of the positioning pin is connected to the lower end of the button, and a cover plate is arranged on the cavity hole of the base.

[0004] The processing and manufacturing of traditional refrigerator door switches are all done by manually installing torsion springs and the like in the base, which greatly reduces the production and processing efficiency of the refrigerator door switches and increases labor costs. Summary of the invention

[0005] In view of the deficiencies in the prior art, one of the purposes of the present invention is to provide an automatic feeding mechanism for torsion springs, which has the effect of improving the production and processing efficiency of refrigerator door switches and reducing labor costs.

[0006] The first object of the present invention is achieved through the following technical solutions:

[0007] A torsion spring automatic feeding mechanism comprises a mounting frame and an automatic torsion spring feeder for automatically conveying torsion springs, wherein a transfer assembly for transferring torsion springs at an outlet of the automatic torsion spring feeder, a ejection assembly for ejecting torsion springs on the transfer assembly, a positioning clamping assembly for clamping the torsion springs ejected by the ejection assembly, a feeding clamping assembly for feeding and clamping the torsion springs on the positioning clamping assembly, and a displacement assembly for causing the feeding clamping assembly to perform lateral and longitudinal reciprocating motion are respectively mounted on the mounting frame.

[0008] By adopting the above technical scheme, first, the torsion spring is placed in the torsion spring automatic feeder to realize the process of automatic and orderly conveying of the torsion spring; when the torsion spring is transmitted to the transfer component, the torsion spring is transferred to the ejecting component by the transfer component; then, the torsion spring on the transfer component is ejected by the ejecting component to complete the process of ejecting the torsion spring on the transfer component; next, the positioning clamping component clamps one end of the torsion spring to complete the process of positioning and clamping the torsion spring ejected by the ejecting component; finally, the loading clamping component is driven by the displacement component to move horizontally and vertically, and then the other end of the torsion spring is clamped or released by the loading clamping component to realize the process of automatic loading of the torsion spring; through the torsion spring automatic feeder, the transfer component, the ejecting component, the positioning clamping component, the displacement component and the loading clamping component, the corresponding automatic loading operation process of the torsion spring is realized, which has the effect of improving the production and processing efficiency of the refrigerator door switch and reducing the labor cost.

[0009] In a preferred example, the present invention can be further configured as follows: the automatic torsion spring feeder includes a vibrating plate and a feed pipe installed at the discharge port of the vibrating plate, a feed port for conveying torsion springs is provided on the feed pipe, and the transfer component is connected to or blocked from the feed port through reciprocating rotation.

[0010] By adopting the above technical solution, the torsion spring is placed in the vibration plate of the torsion spring automatic feeder. Through the interaction between the vibration plate and the conveying pipe, the torsion spring is automatically and orderly conveyed to the transfer component in the conveying port on the conveying pipe.

[0011] In a preferred example, the present invention can be further configured as follows: the transfer assembly includes a transfer plate rotatably arranged on a mounting frame and a driving member for driving the transfer plate to rotate on the mounting frame, and a mounting opening for accommodating a torsion spring is provided on the transfer plate, and the driving member drives the transfer plate to connect or block the mounting opening with the feed port.

[0012] By adopting the above technical solution, when the installation port and the feed port are connected, the torsion spring is transmitted to the installation port of the transfer plate in the transfer assembly, and then the transfer plate is driven to rotate by the driving member, which on the one hand blocks the feed port, and on the other hand completes the process of transferring the torsion spring on the installation port to the top material assembly.

[0013] In a preferred example, the present invention can be further configured as follows: the driving member includes a driving cylinder installed on a mounting frame, a rack connected to a piston rod of the driving cylinder, and a gear fixedly installed on a transfer plate, wherein the rack is directional-slidably arranged on the mounting frame and is meshingly connected to the gear.

[0014] By adopting the above technical solution, the rack is driven to reciprocate by driving the air cylinder, so that the gear drives the transfer plate to reciprocate on the mounting frame, so that the transfer plate can block the feed port on the one hand to limit the conveying of the torsion spring, and on the other hand to complete the process of transferring the torsion spring on the mounting port to the top material assembly.

[0015] In a preferred example, the present invention may be further configured as follows: a sensor for sensing whether the torsion spring is located on the mounting opening is mounted on the mounting frame, and the sensor is electrically connected to the driving member.

[0016] By adopting the above technical solution, when the torsion spring is normally transmitted to the installation port on the transfer plate, the sensor senses it, so that the driving part works normally; when the torsion spring is not in the installation port during the transmission process, the sensor senses it and feeds back its signal to the driving cylinder, causing it to stop working.

[0017] In a preferred example, the present invention can be further configured as follows: the lifting assembly includes a lifting cylinder fixedly mounted on a mounting frame and a lifting rod fixedly connected to the piston rod of the lifting cylinder, and an annular groove is provided on the circumferential surface of the free end of the lifting rod, and the diameter of the annular groove is smaller than the inner diameter of the torsion spring.

[0018] By adopting the above technical solution, when the rotating assembly transfers the torsion spring to the ejecting assembly, the ejecting rod is driven by the ejecting cylinder to move toward the transfer plate and pass through the installation port, and the torsion spring in the installation port is sleeved on the annular groove at the free end of the ejecting rod, thereby completing the process of ejecting the torsion spring on the transfer plate.

[0019] In a preferred example, the present invention can be further configured as follows: the positioning and clamping assembly includes a positioning and clamping cylinder fixedly mounted on the mounting frame, a sliding clamping plate mounted on the piston rod of the positioning and clamping cylinder, and a fixed clamping plate fixedly mounted on the mounting frame; the positioning and clamping cylinder drives the sliding clamping plate to reciprocate toward the fixed clamping plate to clamp or feed one end of the torsion spring; a receiving groove is provided on the end surface of the fixed clamping plate facing the ejecting rod; when the ejecting rod ejects the torsion spring from the transfer assembly, the free end of the ejecting rod abuts against the fixed clamping plate, and the torsion spring is located in the receiving groove.

[0020] By adopting the above technical solution, when the pushing rod in the pushing assembly pushes the torsion spring out of the transfer plate, the torsion spring is located in the receiving groove, and the free end of the pushing rod abuts against the fixed clamping plate. The positioning and clamping cylinder drives the sliding clamping plate to move toward the fixed clamping plate. One end of the torsion spring is clamped between the fixed clamping plate and the sliding clamping plate, completing the process of positioning and clamping the torsion spring in the receiving groove.

[0021] In a preferred example, the present invention can be further configured as follows: the feeding clamping assembly includes a double-headed cylinder installed on the displacement assembly and a first clamping plate and a second clamping plate respectively connected to the two piston rods of the double-headed cylinder, the first clamping plate and the second clamping plate are arranged above the positioning clamping assembly, and the double-headed cylinder drives the first clamping plate and the second clamping plate to clamp or release the other end of the torsion spring.

[0022] By adopting the above technical solution, the loading clamping assembly is driven by the displacement assembly to move horizontally and vertically above the positioning clamping assembly, and then the first clamping plate and the second clamping plate are driven to move by the double-headed cylinder to complete the clamping or releasing process of the other end of the torsion spring.

[0023] In a preferred example, the present invention can be further configured as follows: the displacement assembly includes a horizontal cylinder installed on a mounting frame, a horizontal slide connected to the piston rod of the horizontal cylinder, a vertical cylinder installed on the horizontal slide, and a vertical slide connected to the piston rod of the vertical cylinder; the horizontal slide is horizontally slidably arranged on the mounting frame, the vertical slide is vertically slidably arranged on the horizontal slide, and the loading clamping assembly is installed on the vertical slide.

[0024] By adopting the above technical solution, the horizontal slide is driven by the horizontal cylinder to slide horizontally and reciprocatingly and is arranged on the mounting frame, and the vertical slide is driven by the vertical cylinder to slide vertically and reciprocatingly and is arranged on the horizontal slide, so as to achieve the effect that the displacement component drives the loading clamping component to move horizontally and vertically above the positioning clamping component.

[0025] The second object of the present invention is achieved through the following technical solutions:

[0026] A refrigerator door switch automatic assembly machine comprises a frame and the above-mentioned torsion spring automatic feeding mechanism installed on the frame.

[0027] By adopting the above technical solution, the torsion spring is automatically fed through the torsion spring automatic feeding mechanism, which has the effect of improving the production and processing efficiency of the refrigerator door switch and reducing labor costs.

[0028] In summary, the present invention includes the following beneficial technical effects:

[0029] 1. Through the torsion spring automatic feeder, transfer assembly, ejector assembly, positioning clamping assembly, displacement assembly and loading clamping assembly, the corresponding automatic loading operation process of the torsion spring is realized, which has the effect of improving the production and processing efficiency of the refrigerator door switch and reducing the labor cost;

[0030] 2. The transfer plate is driven to rotate by the driving member, which blocks the feeding port and restricts the feeding of the torsion spring. On the other hand, the torsion spring on the installation port is transferred to the ejection assembly. When the torsion spring is not in the installation port during the feeding process, the sensor senses and feeds back its signal to the driving cylinder to stop it from working.

[0031] 3. When the torsion spring is pushed out of the transfer plate by the ejecting rod in the ejecting assembly, the torsion spring is located in the accommodating groove, and the torsion spring in the installation mouth is sleeved on the annular groove at the free end of the ejecting rod. The free end of the ejecting rod is in contact with the fixed clamping plate, and the positioning and clamping cylinder drives the sliding clamping plate to move toward the fixed clamping plate, so that the torsion spring is positioned and clamped after being ejected. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a structural diagram of the torsion spring automatic feeding mechanism;

[0033] Figure 2 It is a structural diagram of the torsion spring automatic feeding mechanism without the vibrating plate;

[0034] Figure 3 It is a structural schematic diagram of the transfer component and the ejector component in the torsion spring automatic feeding mechanism;

[0035] Figure 4 It is a structural schematic diagram of the positioning clamping component and the displacement component in the torsion spring automatic feeding mechanism;

[0036] Figure 5 It is a structural schematic diagram of a displacement component and a feeding clamping component in a torsion spring automatic feeding mechanism.

[0037] In the figure, 1. mounting frame; 2. torsion spring automatic feeder; 21. vibration plate; 22. feeding pipe; 23. detector; 3. transfer assembly; 31. transfer plate; 311. mounting port; 32. driving member; 33. driving cylinder; 34. rack; 35. gear; 36. sensor; 4. ejecting assembly; 41. ejecting cylinder; 42. ejecting rod; 421. annular groove; 5. positioning clamping assembly; 51. positioning clamping cylinder; 52. sliding clamping plate; 53. fixed clamping plate; 531. receiving groove; 6. feeding clamping assembly; 61. double-headed cylinder; 62. first clamping plate; 63. second clamping plate; 64. connecting rod; 641. arc-shaped slot; 7. displacement assembly; 71. horizontal cylinder; 72. horizontal slide; 73. vertical cylinder; 74. vertical slide. DETAILED DESCRIPTION

[0038] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0039] Example 1: Reference Figure 1, which is an automatic torsion spring feeding mechanism disclosed in the present invention, includes a mounting frame 1, an automatic torsion spring feeder 2 for automatically conveying torsion springs, and a transfer assembly 3 respectively installed on the mounting frame 1 for transferring the torsion springs at the outlet of the automatic torsion spring feeder 2, a ejection assembly 4 for ejecting the torsion springs on the transfer assembly 3, a positioning clamping assembly 5 for clamping the torsion springs ejected by the ejection assembly 4, a feeding clamping assembly 6 for feeding and clamping the torsion springs on the positioning clamping assembly 5, and a displacement assembly 7 for causing the feeding clamping assembly 6 to perform lateral and longitudinal reciprocating motion.

[0040] Reference Figure 1 , Figure 2 The torsion spring automatic feeder 2 includes a vibration plate 21 and a feeding pipe 22 installed at the discharge port of the vibration plate 21; a feeding port for conveying torsion springs is provided on the feeding pipe 22, and a detector 23 for detecting the conveying of torsion springs in the feeding port is installed on the feeding pipe 22, and the detector 23 is electrically connected to the vibration plate 21; through the vibration plate 21 and the feeding pipe 22, the process of automatically and orderly conveying the torsion springs at the conveying port is completed.

[0041] Reference Figure 3 The transfer assembly 3 includes a transfer plate 31 rotatably arranged on the mounting frame 1 and a driving member 32 for driving the transfer plate 31 to rotate on the mounting frame 1; the driving member 32 includes a driving cylinder 33 fixedly mounted on the mounting frame 1, a rack 34 fixedly connected to the piston rod of the driving cylinder 33, and a gear 35 fixedly mounted on the transfer plate 31, the rack 34 is directional slidingly arranged on the mounting frame 1, and is meshingly and transmission-connected with the gear 35.

[0042] Reference Figure 2 , Figure 3 A mounting opening 311 for accommodating a torsion spring is provided on the transfer plate 31, and the end surface of the transfer plate 31 contacts the end of the feed pipe 22 away from the vibration plate 21. The driving cylinder 33 drives the transmission through the driving gear 35 and the rack 34, so that the transfer plate 31 reciprocates on the mounting frame 1. The reciprocating circumferential surface of the transfer plate 31 is arranged perpendicular to the conveying direction of the feed pipe 22, so that the mounting opening 311 on the transfer plate 31 can communicate with or block the feed port; that is, when the mounting opening 311 is connected with the feed port, the torsion spring is transmitted to the mounting opening 311 of the transfer plate 31, and then through the rotation of the transfer plate 31, on the one hand, the feed port is blocked, and on the other hand, the torsion spring on the mounting opening 311 is transferred to the top material assembly 4.

[0043] Reference Figure 2 , Figure 3In order to improve the conveying accuracy of the torsion spring, a sensor 36 for sensing whether the torsion spring is located on the mounting port 311 is installed on the mounting frame 1, and the sensor 36 is electrically connected to the driving cylinder 33 in the driving member 32; when the torsion spring is not in the mounting port 311 during the conveying process, the sensor 36 senses and feeds back its signal to the driving cylinder 33 to stop it from working.

[0044] Reference Figure 2 , Figure 3 The ejection assembly 4 includes a ejection cylinder 41 fixedly mounted on the mounting frame 1 and a ejection rod 42 fixedly connected to the piston rod of the ejection cylinder 41; at the same time, an annular groove 421 is opened on the circumferential surface of the free end of the ejection rod 42, and the diameter of the annular groove 421 is smaller than the inner diameter of the torsion spring, and the driving direction of the ejection cylinder 41 is arranged perpendicular to the rotating circumferential surface of the transfer plate 31; when the mounting port 311 of the transfer plate 31 and the ejection rod 42 are in the same straight line, the ejection rod 42 is driven by the ejection cylinder 41 to move toward the transfer plate 31 and pass through the mounting port 311, and the torsion spring in the mounting port 311 is sleeved on the annular groove 421 at the free end of the ejection rod 42, thereby completing the process of ejecting the torsion spring on the transfer plate 31.

[0045] Reference Figure 4 The positioning and clamping assembly 5 includes a positioning and clamping cylinder 51 fixedly mounted on the mounting frame 1, a sliding clamping plate 52 mounted on the piston rod of the positioning and clamping cylinder 51, and a fixed clamping plate 53 fixedly mounted on the mounting frame 1; the fixed clamping plate 53 and the conveying pipe are respectively located on both sides of the transfer plate 31, and the positioning and clamping cylinder 51 drives the sliding clamping plate 52 to reciprocate in the direction of the fixed clamping plate 53 to clamp or feed one end of the torsion spring. A receiving groove 531 is provided on the end surface of the fixed clamping plate 53 in the direction of the ejecting rod 42. When the ejecting rod 42 ejects the torsion spring from the mounting opening 311 of the transfer plate, the torsion spring is located in the receiving groove 531, and the free end of the ejecting rod 42 abuts against the fixed clamping plate 53. The positioning and clamping cylinder 51 drives the sliding clamping plate 52 to move in the direction of the fixed clamping plate 53, thereby completing the process of positioning and clamping the torsion spring in the receiving groove 531.

[0046] Reference Figure 4 The displacement assembly 7 includes a horizontal cylinder 71 fixedly mounted on the mounting frame 1, a horizontal slide 72 connected to the piston rod of the horizontal cylinder 71, a vertical cylinder 73 mounted on the horizontal slide 72, and a vertical slide 74 connected to the piston rod of the vertical cylinder 73; the horizontal slide 72 is horizontally slidably arranged on the mounting frame 1, the vertical slide 74 is vertically slidably arranged on the horizontal slide 72, the driving direction of the horizontal cylinder 71 is horizontally arranged with the driving direction of the positioning clamping cylinder, and the driving direction of the vertical cylinder 73 is vertically arranged with the driving direction of the horizontal cylinder 71.

[0047] Reference Figure 4 , Figure 5 The feeding clamping assembly 6 includes a double-headed cylinder 61 fixedly mounted on the vertical slide 74 and a first clamping plate 62 and a second clamping plate 63 respectively connected to the two piston rods of the double-headed cylinder 61; the first clamping plate 62 and the second clamping plate 63 are arranged above the fixed clamping plate 53, and a connecting rod 64 is integrally connected to the second clamping plate 63, and an arc-shaped groove 641 is provided at the free end of the connecting rod 64. When clamping, the arc portion of the torsion spring is located in the arc-shaped groove 641; the double-headed cylinder 61 is driven by the displacement assembly 7 to move in the horizontal and vertical directions, and then the first clamping plate 62 and the second clamping plate 63 are driven to move by the double-headed cylinder 61 to complete the clamping or discharge process of the other end of the torsion spring.

[0048] The implementation principle of this embodiment is as follows: first, the torsion spring is placed in the vibration plate 21 of the torsion spring automatic feeder 2, and the torsion spring is automatically and orderly transported on the conveying port through the action of the vibration plate 21 and the conveying pipe 22; when the installation port 311 is connected to the conveying port, the torsion spring is transmitted to the installation port 311 of the transfer plate 31 in the transfer assembly 3, and then the gear 35 and rack 34 are driven by the driving cylinder 33 to transmit, so that the transfer plate 31 rotates, on the one hand, the conveying port is blocked, and on the other hand, the torsion spring on the installation port 311 is transported to the ejecting assembly 4; then, when the installation port 311 of the transfer plate 31 and the ejecting rod 42 in the ejecting assembly 4 are in the same straight line, the ejecting rod 42 is driven by the ejecting cylinder 41 to move toward the transfer plate 31 and pass through the installation port 311, and the torsion spring in the installation port 311 is sleeved on the annular groove 421 at the free end of the ejecting rod 42, and the torsion spring is located in the accommodating groove 53. 1, the free end of the ejecting rod 42 abuts against the fixed clamping plate 53, completing the process of ejecting the torsion spring on the transfer plate 31; then, the positioning and clamping cylinder 51 in the positioning and clamping assembly 5 drives the sliding clamping plate 52 to move toward the fixed clamping plate 53, and one end of the torsion spring is clamped between the fixed clamping plate 53 and the sliding clamping plate 52, completing the process of positioning and clamping the torsion spring in the accommodating groove 531; finally, the loading and clamping assembly 6 is driven by the displacement assembly 7 to move in the horizontal and vertical directions, and then the first clamping plate 62 and the second clamping plate 63 are driven to move by the double-headed cylinder 61 to complete the process of clamping or releasing the other end of the torsion spring; through the torsion spring automatic feeder 2, the transfer assembly 3, the ejecting assembly 4, the positioning and clamping assembly 5, the displacement assembly 7 and the loading and clamping assembly 6, the corresponding automatic loading operation process of the torsion spring is realized, which has the effect of improving the production and processing efficiency of the refrigerator door switch and reducing the labor cost.

[0049] Embodiment 2: A refrigerator door switch automatic assembly machine comprises a frame and an automatic torsion spring feeding mechanism as in Embodiment 1 installed on the frame.

[0050] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A torsion spring automatic feeding mechanism, characterized in that: The invention comprises a mounting frame (1) and an automatic torsion spring feeder (2) for automatically conveying torsion springs, wherein the mounting frame (1) is respectively provided with a transfer assembly (3) for transferring torsion springs at the outlet of the automatic torsion spring feeder (2), a ejection assembly (4) for ejecting torsion springs on the transfer assembly (3), a positioning clamping assembly (5) for clamping the torsion springs ejected by the ejection assembly (4), a loading clamping assembly (6) for loading and clamping the torsion springs on the positioning clamping assembly (5), and a displacement assembly (7) for causing the loading clamping assembly (6) to perform lateral and longitudinal reciprocating motion, wherein the ejection assembly (4) comprises an ejection cylinder (41) fixedly mounted on the mounting frame (1) and a displacement assembly (7) fixedly connected to the ejection cylinder (41). 1) A push rod (42) on a piston rod, an annular groove (421) is provided on the circumferential surface of the free end of the push rod (42), and the diameter of the annular groove (421) is smaller than the inner diameter of the torsion spring, the positioning clamping assembly (5) comprises a positioning clamping cylinder (51) fixedly mounted on the mounting frame (1), a sliding clamping plate (52) mounted on the piston rod of the positioning clamping cylinder (51), and a fixed clamping plate (53) fixedly mounted on the mounting frame (1), the positioning clamping cylinder (51) drives the sliding clamping plate (52) to reciprocate in the direction of the fixed clamping plate (53) to clamp or feed one end of the torsion spring, and an accommodating groove (53) is provided on the end surface of the fixed clamping plate (53) in the direction of the push rod (42). 1), when the ejector rod (42) ejects the torsion spring onto the transfer assembly (3), the free end of the ejector rod (42) contacts the fixed clamping plate (53), and the torsion spring is located in the accommodating groove (531). The loading clamping assembly (6) comprises a double-headed cylinder (61) mounted on the displacement assembly (7) and a first clamping plate (62) and a second clamping plate (63) respectively connected to two piston rods of the double-headed cylinder (61). The first clamping plate (62) and the second clamping plate (63) are arranged above the positioning clamping assembly (5). The double-headed cylinder (61) drives the first clamping plate (62) and the second clamping plate (63) to clamp or release the other end of the torsion spring. The second clamping plate (63) is connected to a connecting rod (64). ), and an arc-shaped groove (641) is provided at the free end of the connecting rod (64), and when clamped, the arc portion of the torsion spring is located in the arc-shaped groove (641), the torsion spring automatic feeder (2) comprises a vibration plate (21) and a feeding pipe (22) installed at the discharge port of the vibration plate (21), a feeding port for feeding the torsion spring is provided on the feeding pipe (22), the transfer component (3) is connected to or blocked from the feeding port by reciprocating rotation, the transfer component (3) comprises a transfer plate (31) rotatably arranged on the mounting frame (1) and a driving member (32) for driving the transfer plate (31) to rotate on the mounting frame (1), and a mounting port (311) for accommodating the torsion spring is provided on the transfer plate (31),The driving member (32) drives the transfer plate (31) to connect or block the installation opening (311) and the material delivery opening. The driving member (32) comprises a driving cylinder (33) mounted on the mounting frame (1), a rack (34) connected to the piston rod of the driving cylinder (33), and a gear (35) fixedly mounted on the transfer plate (31). The rack (34) is directional and slidably arranged on the mounting frame (1) and is meshed and transmission-connected with the gear (35). A sensor (36) for sensing whether the torsion spring is located on the installation opening (311) is mounted on the mounting frame (1). The sensor (36) is electrically connected to the driving member (32).

2. The automatic torsion spring feeding mechanism according to claim 1 is characterized in that: The displacement assembly (7) comprises a horizontal cylinder (71) mounted on a mounting frame (1), a horizontal slide plate (72) connected to a piston rod of the horizontal cylinder (71), a vertical cylinder (73) mounted on the horizontal slide plate (72), and a vertical slide plate (74) connected to a piston rod of the vertical cylinder (73); the horizontal slide plate (72) is horizontally slidably arranged on the mounting frame (1); the vertical slide plate (74) is vertically slidably arranged on the horizontal slide plate (72); and the loading clamping assembly (6) is mounted on the vertical slide plate (74).

3. A refrigerator door switch automatic assembly machine, characterized in that: It comprises a frame and an automatic torsion spring feeding mechanism as described in any one of claims 1 to 2 installed on the frame.

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