Motor for electric glue melting

Abstract

The present application proposes an electric motor for melting glue, comprising a body and a heat dissipation dust cover, wherein the heat dissipation dust cover is mounted at the rear end of the body, and a fan is mounted in the heat dissipation dust cover. An assembly cavity is provided in the fan, and a forward transmission component, a reverse transmission component and a switching component are mounted in the assembly cavity. The forward transmission component, the reverse transmission component and the fan are assembled and fixed, and the switching component is assembled on the rotating shaft. The above design ensures that the fan rotates in one direction regardless of the forward or reverse rotation of the motor, which can effectively avoid the problem of reduced heat dissipation efficiency and heat accumulation caused by wind direction change, and ensure a stable heat dissipation effect.

Description

Technical Field

[0001] The invention belongs to the technical field of electric glue melting power units, and in particular relates to a motor for electric glue melting. Background Art

[0002] The motor is the core component of the plastic machinery power unit, and its heat dissipation performance directly affects the motor's operating efficiency and life. Traditional motors are usually equipped with cooling fans to help the motor dissipate heat during operation. However, the existing cooling fan design has some significant disadvantages:

[0003] 1. In many existing designs, the cooling fan is directly connected to the motor shaft. When the motor rotates forward, the fan also rotates forward, thus creating an effective cooling air duct. However, when the motor needs to reverse, the fan also reverses. This reversal will cause the cooling air duct to become disordered and the air flow direction to change, thus affecting the cooling effect. Especially for designs that rely on a specific wind direction for heat dissipation, fan reversal may cause local heat accumulation, seriously affecting the heat dissipation performance of the motor.

[0004] 2. To overcome the above problems, some designs use additional counter-rotating fans. This design adds a fan that is connected to the motor shaft in the opposite direction to ensure that no matter how the motor rotates, at least one fan always rotates in one direction. However, this solution increases the complexity of the system, requiring not only more components and space, but also increased manufacturing costs and maintenance difficulties. In addition, a multi-fan system may result in increased noise and increased energy consumption.

[0005] In summary, the existing motor heat dissipation design has obvious deficiencies in dealing with the heat dissipation problem when the motor is rotated forward and reversely. Therefore, there is an urgent need for a heat dissipation fan design that can simplify the structure, improve the heat dissipation efficiency and is suitable for the forward and reverse rotation of the motor. Summary of the invention

[0006] The present application proposes an electric motor for melting glue. Through a unique switching component design, the fan can maintain unidirectional rotation regardless of whether the motor rotates forward or reverse, effectively avoiding the decrease in heat dissipation efficiency and heat accumulation caused by wind direction changes, and ensuring a stable heat dissipation effect.

[0007] In order to solve the above technical problems, the present invention is solved by the following technical solutions.

[0008] An electric motor for melting adhesive comprises a body and a heat dissipation dust cover, wherein the heat dissipation dust cover is mounted at the rear end of the body, a fan is mounted in the heat dissipation dust cover, and a rotating shaft of the body extends from the rear end and is connected and assembled with the fan. Heat dissipation fins are distributed on the sides of the body, and air ducts are formed between the heat dissipation fins, and the air ducts are connected to the heat dissipation dust cover. An assembly cavity is provided in the fan, and a forward transmission component, a reverse transmission component and a switching component are assembled in the assembly cavity. The forward transmission component and the reverse transmission component are assembled and fixed with the fan, and the switching component is assembled on the rotating shaft.

[0009] The switching assembly includes an annular switching seat, and the switching seat is assembled between the forward transmission assembly and the reverse transmission assembly through a first bearing. A shift block is assembled in the switching seat, and the shift block includes a passive end, a connecting section and an active end. A switching cavity is arranged in the switching seat, and the passive end is located in the switching cavity. The connecting section is hinged to the switching seat, and a groove is arranged on the rotating shaft, and the active end is located in the groove. A forward rotation position and a reverse rotation position are respectively arranged on both sides of the switching cavity. A forward connecting piece is assembled in the forward rotation position, and a reverse connecting piece is assembled in the reverse position. When the body rotates forward, the passive end of the shift block is connected to the forward connecting piece, and the forward connecting piece is connected to the forward transmission assembly, and the fan rotates forward; when the body reverses, the passive end of the shift block is connected to the reverse connecting piece, and the reverse connecting piece is connected to the reverse transmission assembly, and the fan rotates forward. The above design ensures that the fan rotates in one direction regardless of whether the motor rotates forward or reverse, which can effectively avoid the problem of reduced heat dissipation efficiency and heat accumulation caused by wind direction change, and ensure a stable heat dissipation effect.

[0010] As a preferred technical solution of an electric melt-adhesive motor, specifically, the forward connector and the reverse connector both include a push rod and a spring. Through holes are provided on the two side end surfaces of the switching seat along the axial direction, and the top of the push rod is located in the through holes. A base is provided at the bottom of the push rod, and a first inclined surface is provided on the side of the base facing the shift block, and a second inclined surface abutting against the first inclined surface is correspondingly provided on the shift block. One end of the spring abuts against the base, and the other end abuts against the inner wall of the switching cavity. When the body rotates forward, the passive end moves to the forward rotation position, and the push rod of the forward connector is pushed out to connect with the forward transmission assembly; when the body reverses, the passive end moves to the reverse position, and the push rod of the reverse connector is pushed out to connect with the reverse transmission assembly. The cooperation of the spring and the push rod can ensure the reliability and stability of the forward connector and the reverse connector when switching between the extended and retracted states, and is conducive to ensuring the rapid response of the switching between the forward and reverse states.

[0011] As an optimal technical solution for an electric motor for melting glue, specifically, a limiting protrusion is arranged on the side of the base, and a limiting groove cooperating with the limiting protrusion is arranged on the side wall of the forward rotation position or the reverse rotation position, which is beneficial to prevent the push rod from shifting during the switching process and ensure the reliability of the connection.

[0012] As a preferred technical solution for an electric melt-adhesive motor, specifically, the forward transmission assembly includes a transmission plate, and the transmission plate is fixed on the fan. The transmission plate is provided with a forward connection hole that cooperates with the top rod of the forward connection member. The forward transmission structure and the forward connection member are connected by the cooperation of the top rod and the forward connection hole, and the structure is simple and the connection is reliable.

[0013] As a preferred technical solution for an electric melt-adhesive motor, specifically, the reverse transmission assembly is a planetary transmission structure, including a sun gear, a planetary gear and a ring gear. The sun gear and the transmission plate are assembled on the rotating shaft through a second bearing, the planetary gear is assembled on a planetary carrier, the planetary carrier is fixedly arranged, and the ring gear is assembled and fixed to the fan. The sun gear is provided with a reverse connection hole that cooperates with the top rod of the reverse connection member. The connection between the reverse transmission structure and the reverse connection member is realized by the cooperation between the top rod and the reverse connection hole, which has a simple structure and reliable connection.

[0014] As a preferred technical solution for an electric melt-adhesive motor, specifically, the planet carrier includes a fixed seat and a fixed ring, and the planetary gear is assembled between the fixed seat and the fixed ring. This design is conducive to ensuring the stable operation of the planetary gear and the reliability of the connection of the planetary gear.

[0015] As a preferred technical solution for an electric melt-adhesive motor, specifically, a dustproof groove is provided on the fixing seat, and a dustproof protrusion is provided at the bottom of the fan to cooperate with the dustproof groove. This design forms a relatively closed structure inside the fan, thereby preventing external dust and impurities from entering the assembly cavity, reducing malfunctions caused by dust accumulation.

[0016] As a preferred technical solution for an electric melter motor, specifically, an elastic cushion is installed in the groove, and the active end is wrapped in the elastic cushion. The elastic cushion is used to reduce vibration and noise, reduce wear of the shaft and the shift block, and extend the service life.

[0017] Compared with the prior art, the present application has the following beneficial effects: the fan is made to always rotate in one direction when the motor is rotating forward or reversely, which is conducive to ensuring a stable heat dissipation effect and effectively avoiding the problem of reduced heat dissipation efficiency and heat accumulation due to wind direction changes. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the motor structure.

[0019] Figure 2 This is a cross-sectional view of the motor at the fan.

[0020] Figure 3 This is a schematic diagram of the structure of the motor (without the heat dissipation dust cover).

[0021] Figure 4 This is an exploded diagram of the fan structure.

[0022] Figure 5 This is a cross-sectional view of the fan structure.

[0023] Figure 6 for Figure 5 Cross-sectional view at AA in the middle.

[0024] Figure 7 for Figure 5 Cross-sectional view at BB in the middle.

[0025] Figure 8 A schematic diagram of the fan structure.

[0026] Fig. 9 It is an assembly diagram of the shift block and the rotating shaft, the forward connecting part, and the reverse connecting part.

[0027] Fig.10 It is a three-dimensional schematic diagram of the dial block.

[0028] Fig.11 It is a three-dimensional schematic diagram of a forward connector or a reverse connector.

[0029] Fig.12 This is a three-dimensional schematic diagram of the planet carrier.

[0030] The following is a description of the markings in the accompanying drawings of the specification:

[0031] 100, body; 110, heat sink; 120, air duct; 130, rotating shaft; 131, groove; 132, elastic cushion layer; 140, heat dissipation dust cover;

[0032] 200, fan; 201, dust-proof protrusion;

[0033] 300, forward transmission assembly; 310, transmission plate; 311, forward connection hole; 320, second bearing;

[0034] 400, reverse transmission assembly; 410, sun gear; 411, reverse connection hole; 420, planetary gear; 430, ring gear; 440, planet carrier; 441, fixed seat; 442, fixed ring; 443, dustproof groove;

[0035] 500, switching assembly; 510, switching seat; 511, switching cavity; 512, positive rotation; 513, reverse rotation; 514, limiting slide groove; 520, first bearing; 530, shift block; 531, passive end; 532, connecting section; 533, active end; 534, second inclined surface; 540, positive connecting member; 550, reverse connecting member; 551, push rod; 552, spring; 553, base; 554, first inclined surface; 555, limiting protrusion. DETAILED DESCRIPTION

[0036] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0037] In the following embodiments, the same or similar reference numerals throughout represent the same or similar components or components with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0038] In the description of the present invention, it should be understood that the terms: center, longitudinal, transverse, length, width, thickness, up, down, front, back, left, right, vertical, horizontal, top, bottom, inside, outside, clockwise, counterclockwise, etc. indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, and therefore cannot be understood as limiting the present invention. In addition, the terms: first, second, etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features shown. In the description of the present invention, unless otherwise clearly specified and limited, the terms: install, connect, connect, etc. should be understood in a broad sense, and ordinary technicians in this field can understand the specific meaning of the above terms in this practicality according to the specific circumstances.

[0039] Reference Figures 1 to 12 , an electric motor for melting glue, comprising a body 100 and a heat dissipation dust cover 140, wherein the heat dissipation dust cover 140 is assembled at the rear end of the body 100, wherein a fan 200 is assembled in the heat dissipation dust cover 140, wherein a rotating shaft 130 of the body 100 extends from the rear end and is connected and assembled with the fan 200. Heat dissipation fins 110 are evenly distributed on the sides of the body 100, wherein an air duct 120 is formed between the heat dissipation fins 110, wherein the air duct 120 is connected to the heat dissipation dust cover 140. An assembly cavity is provided in the fan 200, wherein a forward transmission assembly 300, a reverse transmission assembly 400 and a switching assembly 500 are assembled in the assembly cavity, wherein the forward transmission assembly 300, the reverse transmission assembly 400 and the fan 200 are assembled and fixed, and the switching assembly 500 is assembled on the rotating shaft 130.

[0040] The switching assembly 500 includes an annular switching seat 510, and the switching seat 510 is assembled between the forward transmission assembly 300 and the reverse transmission assembly 400 through a first bearing 520. A shift block 530 is assembled in the switching seat 510, and the shift block 530 includes a passive end 531, a connecting section 532 and an active end 533. A switching cavity 511 is arranged in the switching seat 510, and the passive end 531 is located in the switching cavity 511. The connecting section 532 is hinged to the switching seat 510. A groove 131 is arranged on the rotating shaft 130, and the active end 533 is located in the groove 131. An elastic cushion layer 132 is arranged in the groove 131, and the active end 533 is wrapped in the elastic cushion layer 132. The function of the elastic cushion layer 132 is to reduce vibration and noise, reduce the wear of the rotating shaft 130 and the shift block 530, and extend the service life. A forward rotation position 512 and a reverse rotation position 513 are respectively provided on both sides of the switching cavity 511, and a forward connecting member 540 is installed in the forward rotation position 512, and a reverse connecting member 550 is installed in the reverse rotation position 513. When the main body 100 rotates forward, the passive end 531 of the shift block 530 is connected to the forward connecting member 540, the forward connecting member 540 is connected to the forward transmission assembly 300, and the fan 200 rotates forward; when the main body 100 reverses, the passive end 531 of the shift block 530 is connected to the reverse connecting member 550, the reverse connecting member 550 is connected to the reverse transmission assembly 400, and the fan 200 rotates forward. The above design ensures that the fan 200 rotates in one direction regardless of whether the motor rotates forward or reverse, which can effectively avoid the problem of reduced heat dissipation efficiency and heat accumulation caused by wind direction change, and ensure a stable heat dissipation effect.

[0041] Specifically, the forward connecting member 540 and the reverse connecting member 550 each include a push rod 551 and a spring 552. Through holes are provided on both side end faces of the switching seat 510 in the axial direction, and the top of the push rod 551 is located in the through hole. A base 553 is provided at the bottom of the push rod 551, and a first inclined surface 554 is provided on the side of the base 553 facing the shift block 530, and a second inclined surface 534 abutting against the first inclined surface 554 is correspondingly provided on the shift block 530. One end of the spring 552 abuts against the base 553, and the other end abuts against the inner wall of the switching chamber 511. When the body 100 rotates forward, the passive end 531 moves into the forward rotation position 512, and the push rod 551 of the forward connecting member 540 is pushed out to connect with the forward transmission assembly 300; when the body 100 rotates reversely, the passive end 531 moves into the reverse rotation position 513, and the push rod 551 of the reverse connecting member 550 is pushed out to connect with the reverse transmission assembly 400. The cooperation between the spring 552 and the push rod 551 can ensure the reliability and stability of the forward connecting member 540 and the reverse connecting member 550 when switching between the extended and retracted states, and is conducive to ensuring the rapid response of the switching between the forward and reverse states. A limiting protrusion 555 is provided on the side of the base 553, and a limiting sliding groove 514 cooperating with the limiting protrusion 555 is provided on the side wall of the forward rotation position 512 or the reverse rotation position 513, which is conducive to preventing the push rod 551 from deflecting during the switching process and ensuring the reliability of the connection.

[0042] In the present application, the forward transmission assembly 300 includes a transmission plate 310, and the transmission plate 310 is fixed on the fan 200. The transmission plate 310 is provided with a forward connection hole 311 that cooperates with the top rod 551 of the forward connection member 540. The forward transmission structure and the forward connection member 540 are connected by the cooperation of the top rod 551 and the forward connection hole 311, which has a simple structure and reliable connection.

[0043] In the present application, the reverse transmission assembly 400 is a planetary transmission structure, including a sun gear 410, a planetary gear 420 and a ring gear 430. The sun gear 410 and the transmission plate 310 are assembled on the rotating shaft 130 through the second bearing 320, the planetary gear 420 is assembled on the planetary carrier 440, the planetary carrier 440 is fixedly arranged, and the ring gear 430 is assembled and fixed with the fan 200. The sun gear 410 is provided with a reverse connection hole 411 that cooperates with the top rod 551 of the reverse connection member 550. The connection between the reverse transmission structure and the reverse connection member 550 is realized by the cooperation between the top rod 551 and the reverse connection hole 411, which has a simple structure and reliable connection.

[0044] The working principle of the heat dissipation mechanism described in the present application is as follows: when the body 100 is in the forward rotation state, the rotating shaft 130 rotates forward, driving the shift block 530 to rotate, the passive end 531 of the shift block 530 moves to the forward rotation position 512, the push rod 551 of the forward connecting member 540 is pushed out and inserted into the forward connection hole 311 of the transmission plate 310 in the forward transmission assembly 300, and the fan 200 is driven to rotate forward. When the body 100 is switched to the reverse state, the rotating shaft 130 reverses, driving the passive end 531 of the shift block 530 to move to the reverse position 513, the push rod 551 of the reverse connecting member 550 is pushed out and inserted into the reverse connection hole 411 of the sun gear 410 of the reverse transmission assembly 400, and the push rod 551 of the forward connecting member 540 retracts. The sun gear 410 is driven to rotate in the reverse direction, the rotation of the sun gear 410 drives the planetary gear 420 to rotate, and the rotation of the planetary gear 420 drives the ring gear 430 to rotate in the forward direction. Since the ring gear 430 is fixedly assembled with the fan 200, the fan 200 is driven to rotate in the forward direction.

[0045] In addition, the planetary frame 440 includes a fixing seat 441 and a fixing ring 442, and the planetary gear 420 is assembled between the fixing seat 441 and the fixing ring 442. This design is conducive to ensuring the stable operation of the planetary gear 420 and the reliability of the connection of the planetary gear 420. A dustproof groove 443 is provided on the fixing seat 441, and a dustproof protrusion 201 that cooperates with the dustproof groove 443 is provided at the bottom of the fan 200. This design allows the fan 200 to form a relatively closed structure inside, thereby preventing external dust and impurities from entering the assembly cavity and reducing malfunctions caused by dust accumulation.

[0046] The protection scope of the present invention includes but is not limited to the above embodiments. The protection scope of the present invention shall be based on the claims. Any replacement, deformation, and improvement of the technology that can be easily thought of by technicians in this field shall fall within the protection scope of the present invention.

Claims

1. An electric motor for melting glue, comprising a body (100) and a heat dissipation dust cover (140), wherein the heat dissipation dust cover (140) is mounted at the rear end of the body (100), a fan (200) is mounted in the heat dissipation dust cover (140), a rotating shaft (130) of the body (100) extends from the rear end and is connected and assembled with the fan (200); heat dissipation fins (110) are distributed on the side of the body (100), air ducts (120) are formed between the heat dissipation fins (110), and the air ducts (120) are connected to the heat dissipation dust cover (140); characterized in that: An assembly cavity is provided in the fan (200), and a forward transmission assembly (300), a reverse transmission assembly (400) and a switching assembly (500) are assembled in the assembly cavity; the forward transmission assembly (300), the reverse transmission assembly (400) and the fan (200) are assembled and fixed, and the switching assembly (500) is assembled on the rotating shaft (130); The switching assembly (500) comprises an annular switching seat (510), the switching seat (510) being assembled between the forward transmission assembly (300) and the reverse transmission assembly (400) via a first bearing (520); a shift block (530) is assembled in the switching seat (510), the shift block (530) comprising a passive end (531), a connecting section (532) and an active end (533); a switching cavity (511) is arranged in the switching seat (510), the passive end ( The switching chamber (511) is located in the switching chamber (511), the connecting section (532) is hinged to the switching seat (510), the rotating shaft (130) is provided with a groove (131), and the active end (533) is located in the groove (131); a positive rotation position (512) and a reverse rotation position (513) are respectively provided on both sides of the switching chamber (511), a positive connecting member (540) is installed in the positive rotation position (512), and a reverse connecting member (550) is installed in the reverse rotation position (513); When the body (100) rotates forward, the passive end (531) of the shift block (530) is connected to the forward connecting member (540), the forward connecting member (540) is connected to the forward transmission assembly (300), and the fan (200) rotates forward; when the body (100) rotates reversely, the passive end (531) of the shift block (530) is connected to the reverse connecting member (550), the reverse connecting member (550) is connected to the reverse transmission assembly (400), and the fan (200) rotates forward.

2. The electric motor for melting adhesive according to claim 1, characterized in that: The forward connecting member (540) and the reverse connecting member (550) both comprise a push rod (551) and a spring (552); through holes are provided on both side end surfaces of the switching seat (510) along the axial direction, and the top of the push rod (551) is located in the through hole; a base (553) is provided at the bottom of the push rod (551); a first inclined surface (554) is provided on the side of the base (553) facing the shift block (530); and a second inclined surface (534) abutting against the first inclined surface (554) is correspondingly provided on the shift block (530); one end of the spring (552) abuts against the base (553), and the other end abuts against the inner wall of the switching chamber (511); When the body (100) rotates forward, the passive end (531) moves to the forward rotation position (512), and the push rod (551) of the forward connecting member (540) is pushed out to connect with the forward transmission assembly (300); when the body (100) rotates reversely, the passive end (531) moves to the reverse rotation position (513), and the push rod (551) of the reverse connecting member (550) is pushed out to connect with the reverse transmission assembly (400).

3. The electric motor for melting glue according to claim 2, characterized in that: A limiting protrusion (555) is provided on the side of the base (553), and a limiting sliding groove (514) cooperating with the limiting protrusion (555) is provided on the side wall of the positive rotation position (512) or the reverse rotation position (513).

4. The electric motor for melting adhesive according to claim 2, characterized in that: The forward transmission assembly (300) comprises a transmission plate (310), wherein the transmission plate (310) is fixed on the fan (200); the transmission plate (310) is provided with a forward connection hole (311) that cooperates with a top rod (551) of a forward connection member (540).

5. The electric motor for melting adhesive according to claim 4, characterized in that: The reverse transmission assembly (400) is a planetary transmission structure, comprising a sun gear (410), a planet gear (420) and a ring gear (430); the sun gear (410) and the transmission plate (310) are assembled on the rotating shaft (130) via a second bearing (320); the planet gear (420) is assembled on a planet carrier (440); the planet carrier (440) is fixedly arranged; the ring gear (430) is assembled and fixedly arranged on the fan (200); and a reverse connection hole (411) is arranged on the sun gear (410) and is matched with a top rod (551) of a reverse connection member (550).

6. The electric motor for melting adhesive according to claim 5, characterized in that: The planet carrier (440) comprises a fixing seat (441) and a fixing ring (442), and the planet gear (420) is assembled between the fixing seat (441) and the fixing ring (442).

7. The electric motor for melting adhesive according to claim 6, characterized in that: The fixing seat (441) is provided with a dustproof groove (443), and the bottom of the fan (200) is provided with a dustproof protrusion (201) that cooperates with the dustproof groove (443).

8. The electric motor for melting adhesive according to claim 1, characterized in that: An elastic cushion layer (132) is installed in the groove (131), and the active end (533) is wrapped in the elastic cushion layer (132).

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