CN211436870U

CN211436870U - Electric glue gun control device

Info

Publication number: CN211436870U
Application number: CN201922291548.7U
Authority: CN
Inventors: 逯红亮
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-19
Filing date: 2019-12-19
Publication date: 2020-09-08
Anticipated expiration: 2029-12-19

Abstract

The utility model relates to the technical field of electric glue gun control, in particular to an electric glue gun control device, which is characterized in that a limit mechanism is arranged, the limit mechanism comprises a magnetic sensor, a limit sensing piece on the magnetic sensor is arranged on a motion path of a push rod and a gun shell which are retracted, so that the relative motion between the push rod and the gun shell can be limited, the magnetic sensor is electrically connected with a power supply, if the power is not cut off in time in the glue injection process, when the push rod runs to the limit sensing piece within a sensing distance, a circuit between the operating mechanism and the power is disconnected, the push rod and the gun shell can not collide, the structure solves the problem of collision between the gun shell and the push rod caused by the power failure in time and the problem of easy damage of each part of the electric glue gun caused by the power failure in time, and avoids the problem of collision or friction of each part of the electric glue gun caused by the, the safety and the service life of the electric glue gun are improved.

Description

Electric glue gun control device

Technical Field

The utility model relates to an electronic rifle control technology field of gluing, especially an electronic rifle controlling means that glues.

Background

The electric glue gun is a hardware tool for gluing, and is powered by a motor, and a transmission device is used for driving a push rod to extrude a rubber tube, so that glue liquid flows out of the head of the rubber tube. For manual gluey rifle, electronic gluey rifle efficient, it is even to go out to glue, by wide application, current electronic gluey rifle uses also has a problem, for example at the injecting glue in-process, can only stop the injecting glue through the switch outage, if the push rod has not yet cut off the power when the afterbody of rifle shell is reachd soon, then the rifle shell can collide with the push rod after the outage, each part of electronic gluey rifle can take place vibrations, especially can bump or rub between the gear, each part damages easily, life hangs down.

SUMMERY OF THE UTILITY MODEL

The invention of the utility model aims to: the utility model provides an electronic rifle controlling means that glues to the problem that the injecting glue in-process that prior art exists does not in time cut off the power supply and the collision of rifle shell and push rod that arouses to and the easy damage of electronic gluey rifle each part that it leads to.

In order to realize the purpose, the utility model discloses a technical scheme be:

a control device of an electric glue gun comprises a limiting mechanism for limiting relative movement between a push rod and a gun shell, wherein the limiting mechanism comprises a magnetic sensor, and a limiting induction part on the magnetic sensor is arranged on a retraction movement path of the push rod and the gun shell;

the electric glue gun control device further comprises an operating mechanism connected with a power supply, the magnetic sensor is electrically connected with the power supply, and when the push rod retracts to the position-limiting sensing piece within the sensing distance, a circuit between the operating mechanism and the power supply is disconnected.

The limit sensing part on the magnetic sensor is arranged on the moving path of the push rod and the gun shell, so that the relative movement between the push rod and the gun shell is limited, the magnetic sensor is electrically connected with the power supply, in the glue injection process, if the power is not timely cut off, when the push rod runs to the limit sensing part in the sensing distance, a circuit between the running mechanism and the power is disconnected, the push rod and the gun shell cannot collide, the structure solves the problem that the gun shell and the push rod collide due to the power failure in time and the problem that each part of the electric glue gun is easily damaged due to the collision or friction of each part of the electric glue gun caused by the power failure in time, and improves the safety and the service life of the electric glue gun.

As the utility model discloses a preferred scheme, spacing response piece includes the magnetic induction circuit board or is provided with the inductive probe of magnetic induction circuit board, the push rod is corresponding be provided with magnetism on the surface of gun case and be surveyed the piece.

As a preferable scheme of the utility model, the gun shell comprises a gun shell main body and a side cover arranged circumferentially, and the side cover and the gun shell main body form an accommodating space for accommodating the running mechanism; the gun case further comprises an upper cover;

the side cover is an independent component or a structural component integrally prepared with the upper cover.

As the preferred scheme of the utility model, the operating mechanism is arranged in the gun shell and is sequentially connected with an actuator, a planetary gear speed reducing mechanism and a transmission gear set in a transmission way from bottom to top; the transmission gear set is in meshing transmission with the push rod;

the planetary gear speed reducing mechanism comprises an inner gear ring, and a plurality of cutting grooves are annularly arranged on the outer wall of the inner gear ring; the gun shell is also provided with a locking block;

when the locking block is located at the first position, the locking block is located in any one of the cutting grooves to lock the inner gear ring; when the locking piece is at the second position, the locking piece is separated from the cutting groove so that the inner gear ring is free in the circumferential direction.

As the preferred scheme of the utility model, the inner wall of rifle shell is provided with and is used for spacingly ring gear axial motion's fixed part.

As the utility model discloses a preferred scheme, the fixed part includes the edge a plurality of mountings of ring gear circumference distribution, all the mounting all with the ring gear is pressed close to mutually and contactless.

As a preferable aspect of the present invention, the planetary gear speed reduction mechanism includes a first planetary gear set and a second planetary gear set; the first planetary gear set is connected with the actuator, and the second planetary gear set is connected with the transmission gear set; the first planetary gear set and the second planetary gear set are both provided with inner gear rings; the first planetary gear set is provided with a planetary gear carrier, and the second planetary gear set is arranged on the planetary gear carrier; a washer is arranged between the first planetary gear set and the second planetary gear set;

the second planetary gear set is provided with a transmission gear rack, and the transmission gear set is arranged on the transmission gear rack.

As a preferred scheme of the utility model, a bearing part for accommodating the planetary gear speed reducing mechanism is arranged in the gun shell, and a magnetic gasket with a smooth surface is arranged on the end surface of the bearing part which is contacted with the first planetary gear set; the inner wall of the gun shell is provided with a fixing part for limiting the second planetary gear set;

the locking piece is articulated with bearing the piece, and holds and set up the opening that supplies the locking piece activity to wear to establish on the piece.

As the preferred scheme of the utility model, spacing response piece sets up hold on the piece.

As a preferred scheme of the utility model, the gun shell is also provided with a push key exposed outside the gun shell; the push key is mutually abutted with the locking block, and the push key is pressed under the action of external force to drive the locking block to be switched between the first position and the second position.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. the limit sensing part on the magnetic sensor is arranged on the moving path of the push rod and the gun shell, so that the relative movement between the push rod and the gun shell is limited, the magnetic sensor is electrically connected with the power supply, in the glue injection process, if the power is not timely cut off, when the push rod runs to the limit sensing part in the sensing distance, a circuit between the running mechanism and the power is disconnected, the push rod and the gun shell cannot collide, the structure solves the problem that the gun shell and the push rod collide due to the power failure in time and the problem that each part of the electric glue gun is easily damaged due to the collision or friction of each part of the electric glue gun caused by the power failure in time, and improves the safety and the service life of the electric glue gun.

2. The setting of side cap can make and just can observe inside parts such as transmission gear group not dismantling the rifle shell main part, when operating device broke down, because the whole preparation of side cap and upper cover, upper cover and side cap just can be opened very easily to parts such as transmission gear group are maintained inside, and need not dismantle other parts of rifle shell.

3. The actuator and the planetary gear speed reducing mechanism are used for meshing the transmission push rod to realize automatic extrusion of the rubber tube. And a plurality of cutting grooves are additionally arranged on the outer wall of the inner gear ring of the planetary gear speed reducing mechanism. According to the transmission principle of the planetary gear speed reducing mechanism, when the locking block is located at the first position, namely the inner gear ring is locked, the planetary gear speed reducing mechanism has only one degree of freedom and is used for transmitting the push rod; at the moment, the switch of the electric glue gun is closed, so that the push rod can be driven to move forward to push and inject glue. When the locking block is at the second position, the locking block leaves the cutting groove to enable the inner gear ring to be free in the circumferential direction, the planetary gear speed reducing mechanism has two degrees of freedom, the push rod stops immediately due to resistance force, the glue gun stops glue discharging, meanwhile, the actuator drives the inner gear ring to rotate, and in the state, the push rod can be easily returned to any required position.

Drawings

Fig. 1 is a schematic perspective view of an electric glue gun control device of the present invention;

FIG. 2 is a schematic view of the control device of the electric glue gun according to the present invention;

FIG. 3 is a schematic view of the connection between the carrier and the transmission gear set according to the present invention;

FIG. 4 is an exploded schematic view of the four stage reduction gearbox, planetary reduction mechanism and drive gear set of the present invention;

fig. 5 is a schematic cross-sectional view of the carrier of the present invention;

fig. 6 is a schematic structural view of the push key, the lock block and the planetary gear reduction mechanism of the present invention;

fig. 7 is a planetary gear reduction mechanism of the present invention;

fig. 8 is a schematic structural view of the fixing portion of the present invention;

fig. 9 is a top view of the electric glue gun control device of the present invention;

fig. 10 is a schematic view of the connection relationship between the limit sensor and the bearing member according to the present invention.

The labels in the figure are: 10-gun shell, 11-bearing piece, 12-push key, 13-side cover, 14-fixing part and 15-limit induction piece;

20-planetary reduction, 21-first planetary gear set, 211-planetary carrier, 22-second planetary gear set, 221-transmission carrier, 23-ring gear, 231-notch, 24-washer, 25-magnetic washer;

30-locking piece, 31-lug;

41-four-stage reduction gear box and 42-transmission gear set;

50-push rod, 51-limit pull block;

60-gun stock.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Examples

Specific embodiments are as follows, and as shown in fig. 1-10, an electric glue gun control device structure is disclosed.

As shown in fig. 2, the electric glue gun includes a gun housing 1, a butt 60 provided at a front end of the gun housing 1, and a push rod 50 forming a moving pair with the gun housing 1. Wherein, an actuator, a planetary gear speed reducing mechanism 20 and a driven gear set are arranged in the cavity of the gun case 1. The transmission gear set 42 is in meshing transmission with the push rod 50, the actuator drives the planetary gear speed reducing mechanism 20, and the planetary gear speed reducing mechanism 20 drives the transmission gear set 42 to enable the push rod 50 to advance forwards so as to extrude a rubber pipe on the gun stock 60.

As shown in fig. 2, the gun case 1 is a gun-shaped hollow case. The stock 60 is fixed at the top of the front end of the gun shell 1, and a gun type key of the stock 60 is arranged below the stock 60. The gun housing 1 and butt stock 60 are conventional in the art and will not be described in excessive detail herein.

As shown in fig. 1, the gun case 10 includes a gun case main body and a side cover 13 circumferentially disposed, the side cover 13 and the gun case main body forming an accommodating space for accommodating the operation mechanism; the gun housing 10 further comprises an upper cover;

the side cover 13 is a separate member or a structural member integrally formed with the upper cover. The side cover 13 is shown as a structural member integrally formed with the upper cover for ease of maintenance. As can be seen from fig. 1 and 2, the main body of the gun case includes a left cover and a right cover, and the upper cover and the side cover 13 are arranged to repair the components such as the transmission gear set 42 without disassembling the left cover and the right cover.

The push rod 50 is a rigid rack, and one end surface of the push rod 50 is provided with continuous convex teeth. The push rod 50 extends completely through the top of the gun housing 1. One end of the push rod 50 is suspended in the area of the stock 60, and the end of the end is provided with a press block for pushing the hose. The other end of the push rod 50 is suspended behind the gun housing 1, and the end part is connected with a limit pull block 51.

In this embodiment, the limit pulling block 51 is abutted against the outer wall of the gun housing 1, so that the push rod 50 can be prevented from being separated from the gun housing 1 due to over-position during use. On the other hand, the limiting pull block 51 facilitates the user to pull the push rod 50 back to the initial position.

As shown in fig. 8, the inner wall of the gun housing 10 is provided with a fixing portion 14 for limiting the axial movement of the inner gear ring 23.

The fixing portion 14 includes a plurality of fixing members circumferentially distributed along the ring gear 23, and all the fixing members are close to and do not contact the ring gear 23. Close to each other, the two are close to each other but not in contact with each other.

The number of the fixing pieces can be 3 as shown in the figure, and can also be any number of the fixing pieces distributed in the circumferential direction.

As an embodiment, the push rod 50 may be made of a high strength plastic, such as ABS; or may be made magnetically, such as aluminum or aluminum alloys.

In another embodiment, as shown in fig. 3, the electric glue gun of the present invention employs a propelling structure with two push rods 50. The two push rods 50 are arranged at a distance, and the two push rods 50 are parallel to each other. The convex teeth of the two are oppositely arranged.

It should be noted that the driving structure using one push rod 50 or two push rods 50 is realized by those skilled in the art. As shown in fig. 3, the transmission gear set 42 drives one of the push rods 50 through two gears engaged with each other, and the other gear engaged with the other push rod 50.

Further, an independent power supply is arranged in the gun housing 1, and the power supply is connected with the actuator and the gun type key. The power supply is arranged at the bottom of the grip of the gun shell 1. Further, as shown in fig. 1, a speed adjusting knob is further disposed at the bottom of the grip of the gun housing 1, and the speed adjusting knob is used for controlling the rotation speed of the actuator so as to control the glue squeezing speed. The speed regulating knob is respectively connected with the actuator and the power supply. On the other hand, an electronic display board for displaying the power amount is provided on the side wall of the gun case 1.

As shown in fig. 4, the actuator includes a motor and a four-stage reduction gear box 41; specifically, the four-stage reduction gear box 41 incorporates a four-stage planetary gear reduction group. The four-stage reduction gearbox 41 is conventional in the art and will not be described in excessive detail herein.

As shown in fig. 6, the planetary gear reduction mechanism 20 includes a first planetary gear set 21 and a second planetary gear set 22. The first planetary gear set 21 and the second planetary gear set 22 are substantially the same in configuration.

Through the design, the combination of the four-stage reduction gear box 41 and the planetary gear reduction mechanism 20 has the advantages of novel structure, reasonable process speed, large output thrust, environment temperature of more than 15 ℃ below zero or the use of materials with higher viscosity, and the glue can be easily extruded.

Further, the first planetary gear set 21 includes a ring gear 23, and four planetary gears and a planetary carrier 211 engaged in the ring gear 23. The carrier 211 is connected with four planetary gears, and the second planetary gear set 22 is spanned on the carrier 211, and a washer 24 is arranged between the first planetary gear set 21 and the second planetary gear set 22; the top of the planet carrier 211 is drivingly connected to the second planetary gear set 22.

As shown in fig. 7, the second gear set is different in that it further includes a transmission gear carrier 221, and the transmission gear carrier 221 is used for driving and connecting the transmission gear set 42. The planet carrier 211 is conventional and the gear carrier 221 is within the skill of those in the art and will not be described in excessive detail herein.

Further, as shown in fig. 6, a plurality of cutting grooves 231 are annularly formed on an outer wall of the ring gear 23, and the cutting grooves 231 are recessed grooves through which upper and lower end surfaces thereof penetrate.

In one embodiment, the plurality of slots 231 are equally spaced.

As shown in fig. 2, in order to facilitate the installation of the actuator and the planetary gear reduction mechanism 20, a carrier 11 is further provided in the gun housing 1, and the bottom of the carrier 11 has a multi-step columnar structure with a diameter length gradually decreasing downward. And specifically, the layout is that, in the vertical direction, the motor, the four-stage reduction gear box 41, the first planetary gear set 21, the second planetary gear set 22 and the driven gear set are arranged in this order from bottom to top. And the limit sensing member 15 is disposed on the carrier member 11.

Further, the top inner wall of the gun housing 1 is provided with a fixing portion 14 extending downward. During installation, the inner wall of the bottom of the bearing piece limits the first planetary gear set 21, the fixing part 14 abuts against the top of the second planetary gear set 22, and the two limit the up-down direction of the planetary gear speed reducing mechanism 20 respectively, so that the planetary gear speed reducing mechanism 20 is ensured to be installed in a matched mode and operate stably.

Further, the motor is fixedly connected to the outer wall of the bottom of the carrier 11, the four-stage reduction gear box 41 is placed at the bottommost position of the carrier 11, and the output shaft of the motor penetrates through the carrier 11 and is connected with the four-stage reduction gear box 41. The planetary gear speed reduction mechanism 20 is placed on the stepped end surface of the upper stage, and the end surface of the carrier 11 that contacts the first planetary gear set 21 is provided with a magnetic spacer 25 having a smooth surface to facilitate circumferential rotation of the first planetary gear.

As shown in fig. 6, the gun housing 1 is further provided with a lock piece 30 at one side of the planetary gear reduction mechanism 20. Further, the locking piece 30 is used for locking the ring gear 23 of the planetary gear speed reducing mechanism 20, and may be the ring gear 23 of the first planetary gear set 21 or the ring gear 23 of the second planetary gear set 22. The present embodiment locks the ring gear 23 of the second planetary gear set 22.

Specifically, the lock 30 has two positions, when the lock 30 is in the first position, the lock 30 is located in any one of the slots 231 to lock the ring gear 23; when the lock 30 is in the second position, the lock 30 is disengaged from the cut groove 231 to circumferentially free the ring gear 23.

In one example, the top of the lock block 30 is provided with a laterally extending lug 31, and in the first position, the lug 31 is located in the slot 231. As shown in fig. 2, an opening for the lock block 30 to movably penetrate is formed on the bearing member 11, and the lock block 30 is hinged at the opening.

For the convenience of the user, the gun housing 1 is also provided with a push key 12. The rear shell of the gun shell 1 is provided with another opening, namely the end surface far away from the gun type key. As shown in fig. 2, the push key 12 is cylindrical, and the push key 12 protrudes out of the gun case for pressing.

The push key 12 and the lock block 30 are based on the principle that the outer wall of the push key 12 and the bottom of the lock block 30 abut against each other, and the lock block 30 is driven to switch between the first position and the second position by pressing the push key 12. This is achievable by a person skilled in the art and is not overrepresented here.

As shown in fig. 9 and 10, in order to avoid the excessive forward stroke of the push rod 50 of the electric glue gun and damage to the internal transmission structure, the control device of the electric glue gun comprises a limiting mechanism for limiting the relative movement between the push rod 50 and the gun shell 10, and the limiting mechanism comprises a magnetic sensor.

The limit induction piece 15 on the magnetic sensor is arranged on the retraction motion path of the push rod 50 and the gun shell 10; the position-limiting sensing member 15 may be disposed on the carrier 11.

The limit sensing part 15 comprises a magnetic sensing circuit board or a sensing probe provided with the magnetic sensing circuit board, and a magnetic part to be measured is arranged on the outer surface of the push rod 50 corresponding to the gun shell 10.

The electric glue gun control device further comprises an operating mechanism connected with a power supply, the magnetic sensor is electrically connected with the power supply, and when the push rod 50 retracts to the position limiting induction part 15 within the induction distance, a circuit between the operating mechanism and the power supply is disconnected. The distance value of the induction distance and the magnetic induction circuit board are known technologies, such as a hall sensor, a corresponding measured piece is a magnetic measured piece, and also such as a magnetoelectric proximity sensor in an inductive proximity sensor, at the moment, the magnetic measured piece is replaced by a metal measured piece.

Because the detected object of the hall sensor needs to be a magnetic part, a magnetic part to be detected is arranged on the outer surface of the push rod 50 corresponding to the gun case 10, namely the magnetic part to be detected is arranged on one surface of the limiting pull block 51 close to the gun case 10; the tested piece can be a sheet, a plate or a block; the magnetic measured piece is a structural piece with magnetism, such as a magnet. When the Hall sensor is replaced by a magnetoelectric proximity sensor, the corresponding magnetic measured piece is replaced by a structural piece comprising a metal conductor.

The working principle of the locking block and the planetary gear speed reducing mechanism of the embodiment is as follows:

the utility model discloses an actuator and planetary gear reduction gears, meshing transmission push rod is in order to realize the automatic extrusion to the rubber tube. And a plurality of cutting grooves are additionally arranged on the outer wall of the inner gear ring of the planetary gear speed reducing mechanism. According to the transmission principle of the planetary gear speed reducing mechanism, when the locking block is located at the first position, namely the inner gear ring is locked, the planetary gear speed reducing mechanism has only one degree of freedom and is used for transmitting the push rod; at the moment, the switch of the electric glue gun is closed, so that the push rod can be driven to move forward to push and inject glue. When the locking block is at the second position, the locking block leaves the cutting groove to enable the inner gear ring to be free in the circumferential direction, the planetary gear speed reducing mechanism has two degrees of freedom, the push rod stops immediately due to resistance force, the glue gun stops glue discharging, meanwhile, the actuator drives the inner gear ring to rotate, and in the state, the push rod can be easily returned to any required position. The utility model discloses properly solve the problem that prior art exists simultaneously with simple ingenious structure, make the use of electronic gluey rifle more handy.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The control device of the electric glue gun is characterized by comprising a limiting mechanism for limiting the relative movement between a push rod (50) and a gun shell (10), wherein the limiting mechanism comprises a magnetic sensor, and a limiting induction part (15) on the magnetic sensor is arranged on a movement path for retracting the push rod (50) and the gun shell (10);

the electric glue gun control device further comprises an operating mechanism connected with a power supply, the magnetic sensor is electrically connected with the power supply, and when the push rod (50) retracts to the position limiting sensing piece (15) within a sensing distance, a circuit between the operating mechanism and the power supply is disconnected.

2. The electric glue gun control device according to claim 1, wherein the limit sensor (15) comprises a magnetic sensor circuit board or a sensor probe provided with a magnetic sensor circuit board, and a magnetic measured element is arranged on the outer surface of the push rod (50) corresponding to the gun case (10).

3. The control device of the electric glue gun according to claim 1, characterized in that the gun housing (10) comprises a gun housing main body and a side cover (13) arranged circumferentially, the side cover (13) and the gun housing main body forming a receiving space for receiving the operating mechanism; the gun case (10) further comprises an upper cover;

the side cover (13) is a separate member or a structural member integrally prepared with the upper cover.

4. The electric glue gun control device according to any one of claims 1-3, characterized in that the operating mechanism arranged in the gun housing (10) comprises an actuator, a planetary gear reduction mechanism (20) and a transmission gear set (42) which are in transmission connection from bottom to top, and the transmission gear set (42) is in meshing transmission with the push rod (50);

the planetary gear speed reducing mechanism (20) comprises an inner gear ring (23), and a plurality of cutting grooves (231) are annularly arranged on the outer wall of the inner gear ring (23); the gun shell (10) is also provided with a locking block (30);

when the locking block (30) is at the first position, the locking block (30) is positioned in any one of the cutting grooves (231) to lock the inner gear ring (23); when the locking block (30) is at the second position, the locking block (30) is separated from the cutting groove (231) to enable the inner gear ring (23) to be free in the circumferential direction.

5. The electric glue gun control device according to claim 4, characterized in that the inner wall of the gun housing (10) is provided with a fixing part (14) for limiting the axial movement of the inner gear ring (23).

6. The electric glue gun control device according to claim 5, characterized in that the fixing part (14) comprises a plurality of fixing elements distributed along the circumference of the inner ring gear (23), all the fixing elements are close to and not in contact with the inner ring gear (23).

7. The electric glue gun control device according to claim 6, wherein said planetary gear reduction mechanism (20) comprises a first planetary gear set (21) and a second planetary gear set (22); the first planetary gear set (21) is connected with the actuator, and the second planetary gear set (22) is connected with the transmission gear set (42); the first planetary gear set (21) and the second planetary gear set (22) are both provided with an inner gear ring (23);

the first planetary gear set (21) is provided with a planetary gear carrier (211), and the second planetary gear set (22) is arranged on the planetary gear carrier (211); a washer (24) is arranged between the first planetary gear set (21) and the second planetary gear set (22);

the second planetary gear set (22) is provided with a transmission gear carrier (221), and the transmission gear set (42) is arranged on the transmission gear carrier (221).

8. The control device of the electric glue gun according to claim 7, characterized in that a carrier (11) for accommodating the planetary gear reduction mechanism (20) is provided in the gun housing (10), and the end face of the carrier (11) contacting the first planetary gear set (21) is provided with a magnetic gasket (25) with a smooth surface; the inner wall of the gun shell (10) is provided with a fixed part (14) for limiting the second planetary gear set (22);

the locking piece (30) is hinged with the bearing piece (11), and an opening for the locking piece (30) to movably penetrate is formed in the bearing piece (11).

9. The control device of an electric glue gun according to claim 8, characterized in that the limit sensor (15) is arranged on the carrier (11).

10. The control device of the electric glue gun according to the claim 9, characterized in that the gun shell (10) is also provided with a push key (12) exposed outside the gun shell (10); the push key (12) is abutted against the locking block (30), and the push key (12) is pressed under the action of external force to drive the locking block (30) to switch between the first position and the second position.