Glue gun capable of reducing idle stroke

Abstract

The utility model belongs to the technical field of glue guns, and particularly relates to a glue gun capable of reducing idle stroke, which comprises a handle and a glue cylinder frame, a push rod is arranged on the handle, a push block is arranged on the handle, a driving block is arranged on the push rod, the push block abuts against the driving block, a first elastic piece is arranged in front of the driving block, a locking piece is arranged on the push rod, and an abutting part is arranged on the handle. The lower end of the locking piece is located at the rear end of the abutting part, a second elastic piece is arranged on the abutting part, the other end of the second elastic piece abuts against the locking piece, a linkage plate is arranged between the driving block and the locking piece, the rear end of the linkage plate abuts against the locking piece, and the driving block is in an inclined state and is connected with the push rod in a clamped mode. During resetting, the pressing part at the lower end of the locking piece is driven to extrude the upper end of the driving block through the linkage plate to be separated from the clamping connection with the push rod, so that the pushing part can be driven to move forwards to further drive the driving block to move forwards; and the idle stroke that the driving block is vertical, inclined relative to the push rod and clamped by the push rod is eliminated.

Description

Technical Field

[0001] The utility model belongs to the technical field of glue guns, in particular to a glue gun with reduced idle stroke. Background Art

[0002] The glue gun is a glue squeezing tool commonly used by individuals, families and factories. It can completely seal the gap to prevent water leakage. The glue gun uses the glue gun's propulsion mechanism to propel the glue cartridge filled with glue. The glue gun basically includes a handle, a push rod and a propulsion device. The push rod runs through the handle. A glue cartridge rack is also provided at the front end of the glue cartridge rack. The glue cartridge is provided on the glue cartridge rack. When the handle is pressed, the handle drives the propulsion device to move the push rod along the axial direction of the glue cartridge rack toward the glue outlet of the gun head. The glue in the glue cartridge is discharged from the glue outlet. The propulsion device includes a push rod and a drive block and a locking member arranged on the push rod. The push rod rotates forward to push the rubber tube, thereby achieving Now the glue is applied gradually. The locking part can limit the linear movement of the push rod without affecting the rotation of the push rod. At present, most of the glue guns on the market have a limit part at the rear end of the drive block to keep the drive block and the push rod vertical and in an unlocked state. When applying glue, the handle is required to drive the lower end of the drive block to rotate around the push rod until it is engaged with the push rod, and then continue to squeeze to drive the push rod to move forward. Therefore, the drive block generally has a certain amount of idle stroke, which reduces the efficiency of the caulking gun construction, and makes the amount of glue squeezed out by a single trigger pull fail to meet the expected requirements, thereby increasing the number of trigger pulls and labor intensity, affecting the effect of use, and easily affecting the scope of application of the device. Summary of the invention

[0003] The utility model aims to provide a glue gun with reduced idle stroke, which has a simple structure and reduces the idle stroke of a driving block, so that the operator can start to move the push rod every time he pulls the trigger, thereby reducing labor intensity.

[0004] The purpose of the utility model is achieved in this way:

[0005] A glue gun for reducing idle travel, comprising a handle and a cartridge holder provided at the front end of the handle. A push rod passing through the handle is provided on the handle. The front end of the push rod is located within the cartridge holder and can move back and forth relative to the cartridge holder. A driving handle is provided on the handle, a pushing block is provided on the driving handle, a driving block is provided on the push rod, the pushing block abuts against the driving block, the driving block is inclined relative to the push rod and is clamped with the push rod. Squeezing the driving handle can drive the driving block to move forward through the pushing block. A first elastic member is provided in front of the driving block, and the elastic member is sleeved on the push rod. Pressing the driving handle can squeeze the lower end of the driving block through the pushing block, so that the driving block moves forward and drives the push rod to move forward. A locking member is provided on the push rod, and an abutting portion is provided on the handle. The lower end of the locking member is located at the rear end of the abutting portion, and a second elastic member is provided on the abutting portion. The other end of the second elastic member abuts against the locking member. The locking member is inclined and clamped with the push rod. A linkage plate is provided between the driving block and the locking member. The front end of the linkage plate is close to the driving block and there is a gap behind the upper end of the driving block. The front end of the linkage plate abuts against the driving block. The rear end of the linkage plate abuts against the locking member and there is a gap in front of the upper end of the locking member. When the locking member is unlocked, by pressing the lower end of the locking member, the locking member is rotated to disengage from the clamping with the push rod, and at the same time, the linkage plate is driven to move forward and push the upper end of the driving block, and the upper end of the driving block is squeezed to disengage the driving block from the clamping with the push rod. At this time, the push rod is unlocked.

[0006] Further, a limiting portion is provided on the handle. The limiting portion is located at the front end of the locking member. When controlling the driving handle to drive the push rod to move forward, the locking member is driven to move forward in parallel. The lower end of the lock presses the second elastic member. When the upper end of the locking member moves to abut against the limiting block, the locking member disengages from the clamping with the push rod, and the push rod moves forward alone to complete glue application.

[0007] Further, a limiting member is provided at the upper end of the handle. The limiting member is located behind the locking member and abuts against the upper end of the locking member. There is a gap between the limiting member and the limiting block. The upper end of the locking member is located within the gap between the limiting member and the limiting block.

[0008] Further, a guiding plate is provided on the locking member. The guiding plate is located in front of the locking member. A guiding hole is provided in the guiding plate, and the guiding hole is sleeved on the push rod. A connecting portion is provided on the guiding plate. A connecting block is provided at the rear end of the connecting portion. A connecting groove is provided in the locking member. The connecting portion passes through the connecting groove, and the connecting block is clamped with the rear surface of the locking member.

[0009] Further, a through hole adapted to the linkage plate is provided in the guiding plate, and the linkage plate passes through the through hole.

[0010] Further, a pressing portion is provided on the locking member. The pressing portion is provided at the rear end of the locking member. A clamping hole is formed in the locking member. A clamping block is provided on the pressing portion. The clamping block is connected to the clamping hole. The pressing portion is connected to the locking member through a clamping portion. Clamping portions are bent and provided on both sides of the front end of the pressing portion. The clamping portions are clamped with the lower end of the locking member.

[0011] Further, the handle is provided with a mounting hole. The lower end of the locking member and the rear end of the push rod both pass through the mounting hole and are exposed outside the handle. The abutting portion is located at the lower end of the mounting hole.

[0012] The prominent and beneficial technical effects of the present utility model compared with the prior art are:

[0013] The object of the present utility model is to provide a glue gun with a simple structure, which reduces the dead stroke of the driving block, enables the operator to make the push rod start to move every time the trigger is pulled, reduces the labor intensity, and reduces the dead stroke. The glue gun includes a handle and a glue cylinder holder arranged at the front end of the handle. A push rod penetrating through the handle is arranged on the handle. The front end of the push rod is located in the glue cylinder holder and can move back and forth relative to the glue cylinder holder. A driving handle is arranged on the handle, a pushing block is arranged on the driving handle, a driving block is arranged on the push rod, the pushing block abuts against the driving block, the driving block is inclined relative to the push rod and is clamped with the push rod. Squeezing the driving handle can drive the driving block to move forward through the pushing block. A first elastic member is arranged in front of the driving block, and the elastic member is sleeved on the push rod. Pressing the driving handle can squeeze the lower end of the driving block through the pushing block, so that the driving block moves forward and drives the push rod to move forward. A locking member is arranged on the push rod, and an abutting portion is arranged on the handle. The lower end of the locking member is located at the rear end of the abutting portion. A second elastic member is arranged on the abutting portion, and the other end of the second elastic member abuts against the locking member. The locking member is inclined and clamped with the push rod. A linkage plate is arranged between the driving block and the locking member. The rear end of the linkage portion abuts against the locking member and has a gap in front of the upper end of the locking member. When the locking member is unlocked, by pressing the lower end of the locking member, the locking member is rotated to disengage from the clamping with the push rod, and at the same time, the linkage portion is driven to move forward and push the upper end of the driving block, and the upper end of the driving block is squeezed to disengage the driving block from the clamping with the push rod. At this time, the push rod is unlocked. The difference between the present utility model and most glue guns on the market at present is that a limiting portion is arranged at the rear end of the driving block in the previous glue gun, so that the driving block is kept perpendicular to the push rod and in an unlocked state. When applying glue, it is necessary to drive the lower end of the driving block to rotate around the push rod to be clamped with the push rod by the handle, and then continue to squeeze to drive the push rod to move forward. Therefore, there is generally a certain dead stroke in the driving block, which reduces the construction efficiency of the glue gun. In the present utility model, the driving block itself is in an inclined state and is clamped with the push rod. Just pressing the driving handle can push the driving block and drive the push rod to move forward. When resetting, pressing the pressing portion at the lower end of the locking member can squeeze the upper end of the driving block through the linkage plate, so that it disengages from the clamping with the push rod, and then the pushing portion can be driven to move forward to further drive the driving block to move forward, eliminating the dead stroke of the driving block changing from vertical to inclined relative to the push rod and being clamped with the push rod. This enables the operator to directly drive the push rod to move forward through the driving block every time the trigger is pulled, reducing the influence of the dead stroke on the operator and greatly improving the construction efficiency of the glue gun. Description of the Drawings

[0014] Figure 1 is a perspective view of the present utility model.

[0015] Figure 2 is a cross-sectional view of the present utility model.

[0016] Figure 3 is an exploded view of the present utility model.

[0017] Figure 4 It is a schematic structural diagram of the present utility model with one side handle removed.

[0018] Figure 5 It is a schematic structural diagram of the present utility model with the handle and the rubber cylinder holder removed.

[0019] Figure 6 It is a schematic connection structural diagram of the locking member, the driving block and the push rod of the present utility model.

[0020] Figure 7 It is a schematic structural diagram of the locking member, the driving block, the linkage plate and the limiting portion of the present utility model.

[0021] Figure 8 It is a schematic structural diagram of the locking member, the driving block and the linkage plate of the present utility model.

[0022] Figure 9 It is a schematic connection structural diagram of the locking member, the guide plate and the pressing portion of the present utility model.

[0023] Figure 10 It is a schematic connection structural diagram of the locking member and the guide plate of the present utility model.

[0024] Figure 11 It is a schematic structural diagram of the locking member of the present utility model.

[0025] Figure 12 It is a schematic structural diagram of the pressing portion of the present utility model.

[0026] Figure 13 It is one of the schematic structural diagrams of the guide plate of the present utility model.

[0027] Figure 14 It is another schematic structural diagram of the guide plate of the present utility model.

[0028] The meanings represented by the reference numerals in the figure:

[0029] 1 - handle; 2 - rubber cylinder holder; 3 - push rod; 4 - driving handle; 5 - pushing block; 6 - driving block; 7 - first elastic member; 8 - locking member; 10 - limiting portion; 11 - abutting portion; 12 - linkage plate; 14 - limiting member; 15 - guide plate; 16 - guide hole; 17 - connecting portion; 18 - connecting block; 19 - connecting groove; 21 - pressing portion; 22 - clamping hole; 23 - clamping block; 24 - clamping portion; 25 - mounting hole; 28 - second elastic member. Specific embodiments

[0030] The present utility model will be further described below in conjunction with specific embodiments:

[0031] A glue gun for reducing idle travel, comprising a handle 1 and a cartridge holder 2 provided at the front end of the handle 1. A push rod 3 passing through the handle 1 is provided on the handle 1. The front end of the push rod 3 is located inside the cartridge holder 2 and can move back and forth relative to the cartridge holder 2. A driving handle 4 is provided on the handle 1. A pushing block 5 is provided on the driving handle 4. A driving block 6 is provided on the push rod 3. The pushing block 5 abuts against the driving block 6. The driving block is inclined relative to the push rod 3 and is clamped with the push rod 3. Squeezing the driving handle 4 can drive the driving block 6 to move forward through the pushing block 5. A first elastic member 7 is provided in front of the driving block 6. The elastic member is sleeved on the push rod 3. Pressing the driving handle 4 can squeeze the lower end of the driving block 6 through the pushing block 5, so that the driving block 6 moves forward and drives the push rod 3 to move forward. A locking member 8 is provided on the push rod 3. An abutting portion 11 is provided on the handle 1. The lower end of the locking member 8 is located at the rear end of the abutting portion 11. A second elastic member 28 is provided on the abutting portion 11. The other end of the second elastic member 28 abuts against the locking member 8. The locking member 8 is inclined and clamped with the push rod 3. A linkage plate 12 is provided between the driving block 6 and the locking member 8. The front end of the linkage plate 12 abuts against the driving block 6. The rear end of the linkage plate 12 abuts against the locking member 8 and there is a gap in front of the upper end of the locking member 8. When the locking member 8 is unlocked, by pressing the lower end of the locking member 8, the locking member is rotated to disengage from the clamping with the push rod 3, and at the same time, the linkage plate 12 is driven to move forward and push the upper end of the driving block 6, and the upper end of the driving block 6 is squeezed to disengage the driving block 6 from the clamping with the push rod 3. At this time, the push rod is unlocked.

[0032] The purpose of the present utility model is to provide a glue gun with a simple structure, which reduces the dead stroke of the driving block 6, enables the push rod 3 to start moving every time the operator pulls the trigger, reduces the labor intensity, and reduces the dead stroke. The glue gun includes a handle 1 and a glue cylinder holder 2 provided at the front end of the handle 1. A push rod 3 passing through the handle 1 is provided on the handle 1. The front end of the push rod 3 is located inside the glue cylinder holder 2 and can move back and forth relative to the glue cylinder holder 2. A driving handle 4 is provided on the handle 1, and a pushing block 5 is provided on the driving handle 4. A driving block 6 is provided on the push rod 3. The pushing block 5 abuts against the driving block 6. The driving block is inclined relative to the push rod 3 and is clamped with the push rod 3. Squeezing the driving handle 4 can drive the driving block 6 to move forward through the pushing block 5. A first elastic member 7 is provided in front of the driving block 6. The elastic member is sleeved on the push rod 3. Pressing the driving handle 4 can squeeze the lower end of the driving block 6 through the pushing block 5, so that the driving block 6 moves forward and drives the push rod 3 to move forward. A locking member 8 is provided on the push rod 3, and an abutting portion 11 is provided on the handle 1. The lower end of the locking member 8 is located at the rear end of the abutting portion 11. A second elastic member 28 is provided on the abutting portion 11, and the other end of the second elastic member 28 abuts against the locking member 8. The locking member 8 is inclined and clamped with the push rod 3. A linkage plate 12 is provided between the driving block 6 and the locking member 8. The front end of the linkage plate 12 abuts against the driving block 6. The rear end of the linkage plate 12 abuts against the locking member 8 and has a gap in front of the upper end of the locking member 8. When the locking member 8 is unlocked, by pressing the lower end of the locking member 8, the locking member is rotated to disengage from the clamping with the push rod 3, and at the same time, the linkage plate 12 is driven to move forward and push the upper end of the driving block 6, and the upper end of the driving block 6 is squeezed to disengage the driving block 6 from the clamping with the push rod 3. At this time, the push rod is unlocked. Different from most glue guns on the current market, a limiting portion 10 is provided at the rear end of the driving block 6 in the previous glue gun, so that the driving block 6 is perpendicular to the push rod 3 and in an unlocked state. When applying glue, the handle 1 needs to drive the lower end of the driving block 6 to rotate around the push rod 3 to be clamped with the push rod 3, and then continue to squeeze to drive the push rod 3 to move forward. Therefore, there is generally a certain dead stroke in the driving block 6, which reduces the construction efficiency of the glue gun. In the present utility model, the driving block 6 itself is in an inclined state and is clamped with the push rod 3. Only by pressing the driving handle 4 can the driving block 6 be pushed and the push rod 3 be driven to move forward. When resetting, the pressing portion 21 at the lower end of the locking member 8 can squeeze the upper end of the driving block 6 through the linkage plate 12 to disengage it from the clamping with the push rod 3, and then the pushing portion can be driven to move forward to further drive the driving block 6 to move forward, eliminating the dead stroke of the driving block 6 changing from vertical to inclined relative to the push rod 3 and being clamped with the push rod 3. This enables the operator to directly drive the push rod 3 to move forward through the driving block 6 every time the trigger is pulled, reducing the impact of the dead stroke on the operator and greatly improving the construction efficiency of the glue gun.

[0033] Preferably, a limiting portion 10 is provided on the handle 1. The limiting portion 10 is located at the front end of the locking member 8. When controlling the driving handle 4 to drive the push rod 3 to move forward, the locking member 8 is driven to move forward in parallel. The lower end of the lock presses the second elastic member 28. When the upper end of the locking member 8 moves to abut against the limiting block, the locking member 8 disengages from the clamping connection with the push rod 3, and the push rod 3 moves forward alone to complete caulking. When controlling to release the driving handle 4, the locking member 8 inclines to be clamped with the push rod 3, and the resilience of the second elastic member 28 drives the locking member 8 and the push rod 3 to retract, avoiding the phenomenon that glue continues to flow out from the glue outlet of the glue cartridge, solving the problem that when the glue gun stops caulking and the push rod 3 is still in the feeding position, part of the glue can still drip onto the outside workbench, effectively preventing the dripping and waste of the glue and ensuring the cleanliness of the workbench.

[0034] Preferably, a limiting member 14 is provided at the upper end of the handle 1. The limiting member 14 is located behind the locking member 8 and abuts against the upper end of the locking member 8. There is a gap between the limiting member 14 and the limiting block. The upper end of the locking member 8 is located in the gap between the limiting member 14 and the limiting block, restricting the position of the upper end of the locking member 8 and preventing the upper end of the locking member 8 from rotating backward.

[0035] Preferably, a guiding plate 15 is provided on the locking member 8. The guiding plate 15 is located in front of the locking member 8. The guiding plate 15 is provided with a guiding hole 16, and the guiding hole 16 is sleeved on the push rod 3. A connecting portion 17 is provided on the guiding plate 15. A connecting block 18 is provided at the rear end of the connecting portion 17. A connecting groove 19 is provided on the locking member 8. The connecting portion 17 is inserted into the connecting groove 19, and the connecting block 18 is clamped with the rear surface of the locking member 8. The connection between the guiding plate 15 and the locking member 8 is to play a guiding role when the locking member 8 moves back and forth relative to the push rod 3, preventing the locking member 8 from shifting.

[0036] Preferably, a through hole adapted to the linkage plate 12 is provided on the guiding plate 15, and the linkage plate 12 is inserted into the through hole.

[0037] Preferably, a pressing portion 21 is provided on the locking member 8. The pressing portion 21 is provided at the rear end of the locking member 8. A clamping hole 22 is provided on the locking member 8. A clamping block 23 is provided on the pressing portion 21. The clamping block 23 is connected to the clamping hole 22. The pressing portion 21 is connected to the locking member 8 through a clamping portion 24. The clamping portions 24 are bent on both sides at the front end of the pressing portion 21, and the clamping portions 24 are clamped with the lower end of the locking member 8. By pressing the pressing portion 21, the locking member 8 can be driven to rotate to disengage from the clamping connection with the push rod 3, and the driving block 6 can be driven to rotate to disengage from the clamping connection with the push rod 3 through the linkage plate 12, so that the push rod 3 is unlocked, facilitating pressing the locking member 8 to release the lock.

[0038] Preferably, the handle 1 is provided with a mounting hole 25. The lower end of the locking member 8 and the rear end of the push rod 3 both pass through the mounting hole 25 and are exposed outside the handle 1, and the abutting portion 11 is located at the lower end of the mounting hole 25.

[0039] The above embodiments are only preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. A glue gun with reduced idle stroke, characterized in that: The invention comprises a handle (1) and a rubber cartridge frame (2) arranged at the front end of the handle (1); a push rod (3) penetrating the handle (1) is arranged on the handle (1); the front end of the push rod (3) is located in the rubber cartridge frame (2) and can move forward and backward relative to the rubber cartridge frame (2); a driving handle (4) is arranged on the handle (1); a pushing block (5) is arranged on the driving handle (4); a driving block (6) is arranged on the push rod (3); the pushing block (5) abuts against the driving block (6); the driving block (6) is mutually The push rod (3) is tilted and engaged with the push rod (3); the driving handle (4) is squeezed to drive the driving block (6) to move forward through the pushing block (5); a first elastic member (7) is provided in front of the driving block (6); the elastic member is sleeved on the push rod (3); the driving handle (4) is pressed to squeeze the lower end of the driving block (6) through the pushing block (5), so that the driving block (6) moves forward and drives the push rod (3) to move forward; a locking member (8) is provided on the push rod (3) The handle (1) is provided with an abutting portion (11), the lower end of the locking member (8) is located at the rear end of the abutting portion (11), the abutting portion (11) is provided with a second elastic member (28), the other end of the second elastic member (28) abuts against the locking member (8), the locking member (8) is obliquely engaged with the push rod (3), a linkage plate (12) is provided between the driving block (6) and the locking member (8), the front end of the linkage plate (12) abuts against the driving block (6), the The rear end of the linkage plate (12) abuts against the locking member (8) and is spaced apart from the front of the upper end of the locking member (8). When the locking member (8) is unlocked, the locking member (8) is rotated to disengage from the engagement with the push rod (3) by pressing the lower end of the locking member (8). At the same time, the linkage plate (12) is driven to move forward and push the upper end of the driving block (6), and squeeze the upper end of the driving block (6) to disengage from the engagement with the push rod (3). At this time, the push rod is unlocked.

2. A glue gun with reduced idle stroke according to claim 1, characterized in that: The handle (1) is provided with a limiting portion (10), and the limiting portion (10) is located at the front end of the locking member (8). When the driving handle (4) is controlled to drive the push rod (3) to move forward, the locking member (8) is driven to move forward in parallel, and the lower end of the lock squeezes the second elastic member (28). The upper end of the locking member (8) moves to abut against the limiting block, so that the locking member (8) is disengaged from the clamping connection with the push rod (3), and the push rod (3) moves forward alone to complete the gluing.

3. A glue gun with reduced idle stroke according to claim 2, characterized in that: A limiting member (14) is provided at the upper end of the handle (1), the limiting member (14) being located behind the locking member (8) and abutting against the upper end of the locking member (8), a gap being present between the limiting member (14) and the limiting block, and the upper end of the locking member (8) being located within the gap between the limiting member (14) and the limiting block.

4. A glue gun with reduced idle stroke according to claim 1, characterized in that: The locking member (8) is provided with a guide plate (15), the guide plate (15) is located in front of the locking member (8), the guide plate (15) is provided with a guide hole (16), the guide hole (16) is sleeved on the push rod (3), the guide plate (15) is provided with a connecting portion (17), the rear end of the connecting portion (17) is provided with a connecting block (18), the locking member (8) is provided with a connecting groove (19), the connecting portion (17) is inserted into the connecting groove (19), and the connecting block (18) is snap-connected with the rear surface of the locking member (8).

5. A glue gun with reduced idle stroke according to claim 4, characterized in that: The guide plate (15) is provided with a through hole matched with the linkage plate (12), and the linkage plate (12) is inserted into the through hole.

6. A glue gun with reduced idle stroke according to any one of claims 1 to 4, characterized in that: The locking member (8) is provided with a pressing portion (21), the pressing portion (21) is arranged at the rear end of the locking member (8), the locking member (8) is provided with a clamping hole (22), the pressing portion (21) is provided with a clamping block (23), the clamping block (23) is connected to the clamping hole (22), the pressing portion (21) is connected to the locking member (8) via a clamping portion (24), the two sides of the front end of the pressing portion (21) are bent to provide clamping portions (24), the clamping portions (24) are clamped with the lower end of the locking member (8).

7. A glue gun with reduced idle stroke according to claim 6, characterized in that: The handle (1) is provided with a mounting hole (25), the lower end of the locking member (8) and the rear end of the push rod (3) are both inserted into the mounting hole (25) and exposed outside the handle (1), and the abutment portion (11) is located at the lower end of the mounting hole (25).

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