A hand butt welder

Abstract

The application belongs to the technical field of welding equipment, and discloses a manual butt welding machine. The manual butt welding machine comprises a rack, a left electrode clamping device, a right electrode clamping device and a position adjusting mechanism; the left electrode clamping device, the right electrode clamping device and the position adjusting mechanism are arranged on the rack; the position adjusting mechanism comprises a sliding shaft and a hand crank assembly; the sliding shaft is arranged on the rack and slides along the left-right direction; the sliding shaft is connected with the right electrode clamping device; the hand crank assembly is arranged on the rack and rotates; the hand crank assembly is sleeved on the sliding shaft and is threadedly connected with the sliding shaft; the hand crank assembly can drive the sliding shaft to move leftward and rightward by rotating relative to the rack. The sliding shaft and the hand crank assembly form a screw nut pair, which is compact in structure, occupies a small space and is beneficial to reducing the size of the manual butt welding machine, so that the manual butt welding machine is more flexible in movement and use; on the other hand, the right electrode clamping device can be driven to move by rotating the hand crank assembly, which is convenient and labor-saving and is beneficial to reducing the labor intensity of the operator.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of welding equipment, in particular to a manual butt welding machine. BACKGROUND

[0002] The butt welding machine includes a movable electrode and a fixed electrode, the movable electrode can be close to or away from the fixed electrode to clamp the bars. When the ends of two bars are contacted together, the short-circuit resistance generates heat, so that the ends of the bars are heated. After the ends of the bars are heated to high plasticity, force is applied to extrude, so that the ends of the two bars are firmly butt-jointed.

[0003] The existing butt welding machine generally clamps two bars to be welded by two electrode clamping devices respectively, and drives the two bars to approach each other to abut against each other for welding. The existing driving structure for driving the two electrode clamping devices to approach each other has a large volume, a dispersed structure, occupies a large space, and is laborious to operate. SUMMARY

[0004] The present application aims to provide a manual butt welding machine, which can solve the problems of large volume, dispersed structure, large space occupation, and laborious operation of the existing driving structure.

[0005] To achieve this purpose, the present application adopts the following technical solutions:

[0006] A manual butt welding machine, comprising:

[0007] a rack;

[0008] a left electrode clamping device fixedly arranged on the rack;

[0009] a right electrode clamping device arranged on the rack;

[0010] a position adjusting mechanism arranged on the rack, the position adjusting mechanism comprising a sliding shaft and a hand crank assembly, the sliding shaft being slidingly arranged on the rack in the left-right direction, the sliding shaft being connected with the right electrode clamping device, the hand crank assembly being rotationally arranged on the rack, the hand crank assembly being sleeved on the outside of the sliding shaft and being threadedly connected with the sliding shaft, the hand crank assembly being capable of driving the sliding shaft to move leftward or rightward relative to the rack when the hand crank assembly is rotated relative to the rack.

[0011] As an optional solution of the above-mentioned manual butt welding machine, the rack comprises:

[0012] a box body, the left electrode clamping device being fixedly arranged on the box body;

[0013] The left and right supports are provided on the housing. The left electrode clamping device and the right electrode clamping device are located between the left and right supports. The two ends of the sliding shaft are slidably connected to the left and right supports respectively. The sliding shaft passes through the left electrode clamping device.

[0014] As an optional solution for the aforementioned manual welding machine, both the left and right supports are equipped with linear bearings, and the two ends of the sliding shaft are respectively connected to the corresponding linear bearings.

[0015] As an optional solution for the aforementioned manual welding machine, the position adjustment mechanism further includes a clamping assembly, which comprises:

[0016] A central shaft, which is fixedly connected to the frame, passes through the sliding shaft;

[0017] A spiral sleeve is fitted around the central shaft and threadedly connected to the central shaft. The spiral sleeve passes through the hand crank assembly, which can drive the spiral sleeve to rotate. The spiral sleeve can move relative to the hand crank assembly along the axial direction of the central shaft.

[0018] The first elastic element has one end abutting against the sliding shaft, and the first elastic element can be compressed under the action of the spiral sleeve.

[0019] As an alternative to the aforementioned manual welding machine, one of the spiral sleeve and the hand crank assembly is provided with a key, and the other is provided with a keyway extending axially along the central axis. The key is disposed in the keyway and can slide along the keyway.

[0020] As an alternative to the aforementioned manual butt welding machine, the clamping assembly further includes:

[0021] A sliding sleeve is slidably disposed outside the central shaft. One end of the sliding sleeve abuts against the first elastic element, and the other end abuts against the spiral sleeve.

[0022] As an optional solution for the aforementioned manual welding machine, the right electrode clamping device includes a mounting base, one end of which is sleeved on the slide shaft;

[0023] The slide shaft is provided with two retaining rings, and the mounting base is located between the two retaining rings.

[0024] As an optional solution to the aforementioned manual butt welding machine, the manual butt welding machine further includes:

[0025] A leveling mechanism is provided on the frame and is used to adjust the height of the other end of the mounting base.

[0026] As an optional solution for the aforementioned manual welding machine, the leveling mechanism includes:

[0027] The height adjustment component can slide vertically relative to the frame. The height adjustment component is provided with two guide portions spaced apart vertically, and part of the mounting base can extend between the two guide portions.

[0028] The second elastic element has one end abutting or connected to the frame, and the other end abutting or connected to the height adjustment element;

[0029] An adjusting shaft is vertically set and rotatably connected to the frame, and the adjusting shaft is threadedly connected to the height adjusting component.

[0030] As an alternative to the aforementioned manual welding machine, the second elastic element is sleeved outside the adjusting shaft.

[0031] As an alternative to the aforementioned manual welding machine, the guide part is a bearing.

[0032] As an optional solution for the aforementioned manual welding machine, both the left electrode clamping device and the right electrode clamping device include:

[0033] Mounting base;

[0034] A fixed electrode block is disposed on the mounting base;

[0035] The movable electrode block is located above the fixed electrode block;

[0036] A clamping mechanism is provided on the mounting base. The clamping mechanism is connected to the movable electrode block and is used to drive the movable electrode block to press down toward the fixed electrode block or to lift it up.

[0037] As an optional solution for the aforementioned manual welding machine, the clamping mechanism includes a cam, a handle, and a pressing assembly. The cam is rotatably mounted on the mounting base, and the handle is connected to the cam to drive the cam to rotate. The pressing assembly is elastically connected to the mounting base in the vertical direction. The outer peripheral surface of the cam abuts against the upper end of the pressing assembly, and the lower end of the pressing assembly is connected to the movable electrode block. The size of the pressing assembly in the vertical direction is adjustable.

[0038] As an alternative to the aforementioned manual butt welding machine, the pressing assembly includes:

[0039] The pressure sleeve abuts against the cam at its top and is elastically connected to the mounting base;

[0040] A pressure rod, the bottom end of which is connected to the movable electrode block, and the top end of which extends into and is connected to the pressure sleeve. The length of the pressure rod extending into the pressure sleeve is adjustable.

[0041] As an alternative to the aforementioned manual welding machine, the pressure rod is threadedly connected to the pressure sleeve.

[0042] As an alternative to the aforementioned manual welding machine, the mounting base is provided with a vertically extending sliding hole and an oil injection hole communicating with the sliding hole, and the pressure sleeve is slidably disposed within the sliding hole.

[0043] As an alternative to the aforementioned manual welding machine, the pressure sleeve includes a pressure plate and a sleeve body. The pressure plate is fixed to the top of the sleeve body, the cam abuts against the pressure plate, and the sleeve body is slidably disposed within the sliding hole.

[0044] As an alternative to the aforementioned manual welding machine, the clamping mechanism further includes an elastic element that connects the pressing assembly and the mounting base. The elastic element is used to drive the pressing assembly to move upward relative to the mounting base.

[0045] As an optional solution for the aforementioned manual welding machine, the clamping mechanism further includes a spring pin, which is disposed on the mounting base and parallel to the axis of the cam;

[0046] The outer peripheral surface of the cam has a plane that can abut against the spring pin to limit the rotational limit position of the cam.

[0047] As an optional solution for the aforementioned manual welding machine, the mounting base includes an upper electrode base and a lower electrode base that can be detachably connected. The clamping mechanism is disposed on the upper electrode base, the fixed electrode block is disposed on the lower electrode base, and the sliding shaft passes through the lower electrode base.

[0048] The beneficial effects of this invention are:

[0049] In the manual welding machine provided by this invention, the sliding shaft and the hand crank assembly form a screw and nut kinematic pair. On the one hand, the structure is compact and occupies less space, which helps to reduce the size of the manual welding machine and make it more flexible to move and use. On the other hand, the right electrode clamping device can be driven to move by rotating the hand crank assembly, which is convenient and labor-saving, and helps to reduce the labor intensity of the operator. Attached Figure Description

[0050] Figure 1 This is a structural schematic diagram of the manual welding machine provided by the present invention;

[0051] Figure 2 This is a schematic diagram of the structure of the left electrode clamping device provided by the present invention;

[0052] Figure 3 This is a side view of the manual welding machine provided by the present invention;

[0053] Figure 4 This is a partial structural schematic diagram of the manual welding machine provided by the present invention;

[0054] Figure 5 This is a cross-sectional view of the electrode clamping device and position adjustment mechanism provided by the present invention;

[0055] Figure 6 This is a schematic diagram of the leveling mechanism provided by the present invention;

[0056] Figure 7 This is a schematic diagram of the structure of the right electrode clamping device provided by the present invention;

[0057] Figure 8 This is a cross-sectional view of the electrode clamping device provided by the present invention.

[0058] In the picture:

[0059] 10. Frame; 11. Movable base; 111. Wheels; 12. Housing; 13. Protective cover;

[0060] 20. Electrode clamping device; 21. Mounting base; 211. Upper electrode seat; 212. Lower electrode seat; 2121. Height adjustment shaft; 213. Oil nozzle; 22. Clamping mechanism; 221. Handle; 222. Cam; 2221. Plane; 223. Spring pin; 224. Lower pressing assembly; 2241. Pressure sleeve; 22411. Pressure plate; 22412. Sleeve body; 2242. Pressure rod; 22421. Outer sleeve; 22422. Inner rod; 225. Third elastic element; 23. Fixed electrode block; 24. Movable electrode block;

[0061] 30. Position adjustment mechanism; 31. Sliding shaft; 32. Hand crank assembly; 321. Hand crank wheel sleeve; 322. Thrust bearing; 323. Hand crank wheel seat; 331. Central shaft; 332. Helical sleeve; 333. Sliding sleeve; 334. First elastic element;

[0062] 40. Leveling mechanism; 41. Adjusting shaft; 42. Handwheel; 43. Height adjustment component; 44. Guide part; 45. Second elastic component; 46. Fixing plate. Detailed Implementation

[0063] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0064] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0065] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0066] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0067] like Figure 1 As shown, this embodiment provides a manual butt welding machine, which can be used for special working situations requiring manual welding of two rods. Specifically, the manual butt welding machine includes a frame 10 and an electrode clamping device 20. The frame 10 includes a movable base 11 and a housing 12 mounted on the movable base 11. The movable base 11 and the housing 12 are welded and fixed. The bottom end of the movable base 11 is provided with a traveling wheel 111. The rotation of the traveling wheel 111 can drive the housing 12 and the electrode clamping device 20 mounted on the housing 12 to move, thereby adjusting the position of the manual butt welding machine.

[0068] Furthermore, the frame 10 also includes a protective cover 13, which covers the top of the housing 12. At least part of the electrode clamping device 20 is disposed between the top surface of the housing 12 and the protective cover 13 to protect the electrode clamping device 20.

[0069] In this embodiment, two electrode clamping devices 20 are provided, each clamping one rod to ensure that the ends of the two rods can contact and be firmly joined. For ease of explanation, the two electrode clamping devices 20 are referred to as the left electrode clamping device and the right electrode clamping device, respectively.

[0070] Specifically, the structures of the left electrode clamping device and the right electrode clamping device are basically the same. Taking the left electrode clamping device as an example, such as... Figure 2 As shown, the left electrode clamping device includes a mounting base 21, a movable electrode block 24, a fixed electrode block 23, and a clamping mechanism 22. The fixed electrode block 23 is mounted on the mounting base 21, and the movable electrode block 24 is located above the fixed electrode block 23. The clamping mechanism 22 is connected to the movable electrode block 24 and is used to drive the movable electrode block 24 to press against the fixed electrode block 23 to clamp the rod to be welded, or to drive the movable electrode block 24 upward to loosen the fixation on the rod.

[0071] To avoid sparks flying during welding, such as Figure 3 As shown, a baffle is hinged to the top of the electrode clamping device. The baffle can block the front of the movable electrode block 24 and the fixed electrode block 23, thereby blocking the splashing sparks and ensuring the safety of the operator. Optionally, the bottom of the baffle is an inclined plate that is tilted towards the fixed electrode block 23, which helps to improve the spark blocking effect.

[0072] To improve the welding effect of the two rods, the ends of the two rods need to be pressed together during welding. Therefore, in this embodiment, as follows: Figure 4 As shown, the left electrode clamping device is fixed to the housing 12, and the right electrode clamping device can slide relative to the housing 12 in the left and right directions under the drive of the position adjustment mechanism 30, so as to adjust the distance between the left electrode clamping device and the right electrode clamping device during welding, and ensure that the rod can be clamped.

[0073] Specifically, such as Figure 5 As shown, the position adjustment mechanism 30 is mounted on the frame 10. The position adjustment mechanism 30 includes a sliding shaft 31 and a hand crank assembly 32. The sliding shaft 31 is slidably mounted on the housing 12 in the left-right direction and is connected to the right electrode clamping device. The hand crank assembly 32 is rotatably mounted on the frame 10 and is sleeved on the outside of the sliding shaft 31 and threadedly connected to the sliding shaft 31. The rotation of the hand crank assembly 32 relative to the frame 10 can drive the sliding shaft 32 to move left and right. In this embodiment, the sliding shaft 31 and the hand crank assembly 32 form a screw-nut kinematic pair. On the one hand, the structure is compact and occupies less space, which helps to reduce the size of the manual welding machine and make it more flexible in movement and use. On the other hand, the right electrode clamping device can be driven to move by rotating the hand crank assembly 32, which is convenient and labor-saving, and helps to reduce the labor intensity of the operator.

[0074] Specifically, the hand crank assembly 32 includes a hand crank sleeve 321, a thrust bearing 322, and a hand crank seat 323. The hand crank sleeve 321 is threadedly connected to the sliding shaft 31, and the hand crank seat 323 can rotate relative to the frame 10. The hand crank seat 3223 is fixedly connected to the hand crank sleeve 321, and a thrust bearing 322 is provided between the two.

[0075] Furthermore, the outer fixing sleeve of the hand crank assembly 32 is provided with a handle, which drives the hand crank assembly 32 to rotate, making operation more effortless. In this embodiment, the operating handle includes a base and a handle part connected to the base. The base is rotatably connected to the right support 15, and the hand crank wheel sleeve 321 is fixedly inserted into the base.

[0076] Furthermore, the frame 10 also includes a left support 14 and a right support 15 disposed on the top surface of the housing 12. The left support 14 and the right support 15 are arranged opposite each other in the left-right direction. The left electrode clamping device and the right electrode clamping device are located between the left support 14 and the right support 15 to make the structural arrangement more compact. The two ends of the sliding shaft 31 are slidably connected to the left support 14 and the right support 15 respectively. The sliding shaft 31 passes through the left electrode clamping device and the right electrode clamping device. The sliding shaft 31 can slide axially relative to the left electrode clamping device and can drive the right electrode clamping device to move together axially to achieve adjustment of the distance between the left electrode clamping device and the right electrode clamping device. The above arrangement makes the structure of the electrode clamping device 20 and the position adjustment mechanism 30 more compact, makes reasonable use of the space on the top surface of the housing 12, and helps to reduce the size of the manual welding machine.

[0077] To ensure that the sliding shaft 31 can only move axially relative to the frame 10 and cannot rotate, both the left support 14 and the right support 15 are equipped with linear bearings, and both ends of the sliding shaft 31 are connected to the corresponding linear bearings. By setting linear bearings, the movement of the sliding shaft 31 relative to the frame 10 can be restricted, and the frictional force experienced by the sliding shaft 31 during sliding can be reduced, allowing the sliding shaft 31 to drive the right electrode clamping device to move more smoothly, thereby reducing the force required for the operator to rotate the hand crank assembly 32.

[0078] To further enhance the clamping force between the two bars during welding, the position adjustment mechanism 30 also includes a clamping component, such as... Figure 5 As shown, the clamping assembly includes a central shaft 331, a threaded sleeve 332, and a first elastic element 334. The central shaft 331 is fixedly connected to the frame 10 and passes through the sliding shaft 31 to make the structure more compact. The threaded sleeve 332 is sleeved on the outside of the central shaft 331 and threadedly connected to the central shaft 331. The threaded sleeve 331 passes through the hand crank assembly 32, which can drive the threaded sleeve 331 to rotate. The threaded sleeve 331 can move relative to the hand crank assembly 32 along the axial direction of the central shaft 331. One end of the first elastic element 334 abuts against the sliding shaft 31, and the first elastic element 334 can be compressed under the action of the threaded sleeve 332.

[0079] In this embodiment, the first elastic element 334 is always in a compressed state, which can apply an elastic force to the left to the slide shaft 31, so that the slide shaft 31 has a tendency to move to the left, thereby providing a preload force to the right electrode clamping device to ensure that the two rods are pressed together.

[0080] When placing two rods, in order to facilitate the relative placement of the ends of the two rods, for example, the hand crank assembly 32 is rotated clockwise. Through the threaded engagement between the hand crank assembly 32 and the sliding shaft 31, the sliding shaft 31 will be moved to the right. The sliding shaft 31 will then move the right electrode clamping device to the right, thereby increasing the distance between the left electrode clamping device and the right electrode clamping device, making it easier to place the two rods.

[0081] During this process, the hand crank assembly 32 can drive the threaded sleeve 331 to rotate clockwise synchronously. At the same time, since the threaded sleeve 332 and the central shaft 331 form a screw and nut pair and the central shaft is fixed, the threaded sleeve 332 will move to the left along the axis. The threaded sleeve 332 can drive the first elastic element 334 to be further compressed.

[0082] After the two rods are placed and clamped and fixed by the left electrode clamping device and the right electrode clamping device respectively, rotate the hand crank assembly 32 counterclockwise. Through the threaded engagement between the hand crank assembly 32 and the sliding shaft 31, the sliding shaft 31 will be driven to move to the left. The sliding shaft 31 will drive the right electrode clamping device to move to the left, so as to reduce the distance between the left electrode clamping device and the right electrode clamping device, so as to facilitate the end of the two rods to abut and maintain a certain abutting force.

[0083] During this process, the hand crank assembly 32 can drive the threaded sleeve 331 to rotate counterclockwise synchronously. At the same time, since the threaded sleeve 332 and the central shaft 331 form a screw and nut pair, and the central shaft is fixed, the threaded sleeve 332 will move to the right along the axis, and the elastic force of the first elastic element 334 will be released, but it is still in a compressed state, so as to apply a leftward elastic force to the right electrode clamping device, and provide a clamping force for the clamping of the two rods.

[0084] To enable the screw sleeve 332 to rotate together with the hand crank assembly 32 and to move axially relative to the hand crank assembly 32, the screw sleeve 332 is provided with a keyway extending axially along the central axis 331. The hand crank assembly 32 is provided with a key that engages with the keyway and can slide along the keyway. This configuration is simple in structure and can meet the aforementioned motion requirements.

[0085] In some embodiments, the key can be set on the spiral sleeve 332, and correspondingly, the keyway is set on the hand crank assembly 32, which can also meet the above-mentioned movement requirements.

[0086] Optionally, the key can be fixedly connected to the hand crank assembly 32 by screws to ensure the positioning and fixing effect of the key and the hand crank assembly 32.

[0087] Because the screw sleeve 332 is threadedly fitted to the central shaft 331 and needs to be fitted with a key, requiring high precision and strength, the clamping assembly also includes a sliding sleeve 333 to reduce machining and maintenance costs. The sliding sleeve 333 is slidably fitted outside the central shaft 331, with one end abutting against the first elastic element 334 and the other end abutting against the screw sleeve 332. By setting the sliding sleeve 333, the axial dimension of the screw sleeve 332 can be reduced, and in the case of severe wear of the threaded pair, only the screw sleeve 332 needs to be replaced, which helps to reduce manufacturing and maintenance costs.

[0088] In this embodiment, the first elastic element 334 is a spring, which has the advantages of simple structure and low cost. The first elastic element is sleeved outside the central shaft 331, making the structure more compact, and the central shaft 331 can guide the first elastic element 334, preventing the first elastic element 334 from bending during compression and ensuring the direction of the elastic force provided by the first elastic element 334.

[0089] like Figure 5 As shown, the mounting bases 21 of both electrode clamping devices include an upper electrode seat 211 and a lower electrode seat 212 connected to each other. The lower electrode seats 212 of both electrode clamping devices are sleeved on the slide shaft 31. In order to enable the right electrode clamping device 21 to move axially together with the slide shaft 31, two retaining rings are provided on the slide shaft 31. The lower electrode seat 212 of the right electrode clamping device is located between the two retaining rings, so as to achieve axial positioning of the lower electrode seat 212 on the slide shaft 31 by means of the retaining rings.

[0090] Because the right electrode clamping device can slide relative to the housing 12 and is sleeved outside the sliding shaft 31, in order to ensure that the right electrode clamping device is placed horizontally, the manual welding machine also includes a leveling mechanism. The leveling mechanism is set on the frame and is used to adjust the height of the other end of the lower electrode seat 212 in the right electrode clamping device so that the right electrode clamping device is kept horizontal, thereby ensuring the butt joint and welding effect of the two rods.

[0091] like Figure 6 and Figure 7As shown, the leveling mechanism includes a height adjustment component 43, a second elastic component 45, and an adjusting shaft 41. The height adjustment component 43 can slide vertically relative to the frame 10. Two guide portions 44 are provided on the height adjustment component 43, spaced apart vertically. A portion of the lower electrode seat 212 of the right electrode clamping device can extend between the two guide portions. One end of the second elastic component 45 abuts or connects to the frame 10, and the other end abuts or connects to the height adjustment component 43. The adjusting shaft 41 is vertically arranged and rotatably connected to the frame 10. The adjusting shaft 41 is threadedly connected to the height adjustment component 43. When the adjusting shaft 41 is rotated, it drives the height adjustment component 43 to rise or fall, thereby changing the height of the two guide portions 44. By changing the height of the two guide portions 44, the right electrode clamping device can rotate around the sliding shaft 31, thereby adjusting the right electrode clamping device to a horizontal state.

[0092] In this embodiment, the second elastic element 45 is sleeved outside the adjusting shaft 41 so that the adjusting shaft 41 guides the second elastic element 45. Optionally, the second elastic element 45 is a spring.

[0093] To reduce the friction between the right electrode clamping device and the guide part 44, the guide part 44 is a bearing.

[0094] To facilitate the rotation of the adjusting shaft 41, a handwheel 42 is connected to the top of the adjusting shaft 41. By operating the handwheel 42, the adjusting shaft 41 can be rotated, making the operation easier.

[0095] Furthermore, the leveling mechanism 40 also includes a fixing plate 46, which is fixed to the top surface of the housing 12. The adjusting shaft 41 passes through the fixing plate 46, and the upper end of the second elastic member 45 abuts against the height adjusting member 43, while the lower end abuts against the fixing plate 46.

[0096] To facilitate the cooperation between the right electrode clamping device and the leveling mechanism 40, the lower electrode seat 212 of the right electrode clamping device is provided with a height adjustment shaft 2121, which extends between the two guide parts 44.

[0097] To make it easier for operators to manually drive the movable electrode block 24 to press against the fixed electrode block 23, such as Figure 2 , Figure 7 and Figure 8As shown, the clamping mechanism 22 includes a cam 222, a handle 221, and a pressing assembly 224. The cam 222 is rotatably mounted on the mounting base 21. The handle 221 is connected to the cam 222 to drive the cam 222 to rotate. The pressing assembly 224 is elastically connected to the mounting base 21 in the vertical direction. The outer peripheral surface of the cam 222 abuts against the upper end of the pressing assembly 224, and the lower end of the pressing assembly 224 is connected to the movable electrode block 24. When the operator operates the handle 221, the cam 222 can be rotated by rotating the handle 221, so that the cam 222 can drive the pressing assembly 224 to move downward, thereby causing the movable electrode block 24 to press against the fixed electrode block 23 to clamp the rod. When the operator releases the handle 221, because the pressing assembly 224 is elastically connected to the mounting base 21, the pressing assembly 224 will move upward under the action of elastic restoring force to release the rod. In this embodiment, the movable electrode block 24 is driven to move downward by rotating the handle 221, which makes it easier for the operator to operate.

[0098] With cam 222 remaining unchanged, the travel distance of the pressing component 224 driven by cam 222 when it rotates is fixed. Because there are various types of bars, when replacing them with bars of smaller diameter, after cam 222 drives the pressing component 224 to move downward, it may be unable to properly hold the bar, thus affecting the welding and fixing effect of the two bars.

[0099] To solve the above problems, the vertical dimension of the pressing component 224 is adjustable so that, with the cam 222 unchanged, the minimum height of the bottom end of the pressing component 224 can be adjusted according to the diameter of the rod to ensure the clamping effect of the movable electrode block 24 and the fixed electrode block 23 on the rod.

[0100] Specifically, such as Figure 8 As shown, the pressing assembly 224 includes a pressure sleeve 2241 and a pressure rod 2242. The top end of the pressure sleeve 2241 abuts against the cam 222 and is elastically connected to the mounting base 21; the bottom end of the pressure rod 2242 is connected to the movable electrode block 24, and the top end of the pressure rod 2242 extends into the pressure sleeve 2241 and is connected to the pressure sleeve 2241. The distance by which the pressure rod 2242 extends into the pressure sleeve 2241 is adjustable. By adjusting the adjustable length of the pressure rod 2242 extending into the pressure sleeve 2241, the overall vertical dimension of the pressing assembly 224 can be changed, so as to change the minimum height of the movable electrode block 24, so as to ensure the clamping effect of the movable electrode block 24 and the fixed electrode block 23 on the rod.

[0101] In this embodiment, the pressure rod 2242 is threadedly connected to the pressure sleeve 2241. The length of the pressure rod 2242 extending into the pressure sleeve 2241 can be adjusted by rotating the pressure rod 2242, making adjustment more convenient.

[0102] To further facilitate adjustment of the vertical dimensions of the pressing assembly 224, the pressure rod 2242 includes an outer sleeve 22421, an inner rod 22422, and a retaining spring. The inner rod 22422 passes inside the outer sleeve 22421 and can rotate relative to the outer sleeve 22421. The outer sleeve 22421 is threadedly connected to the pressure sleeve 2241. The top end of the inner rod 22422 extends out of the outer sleeve 22421 and is provided with a retaining spring. The retaining spring abuts against the top end face of the outer sleeve 22421 to prevent the inner rod 22422 from disengaging downward from the outer sleeve 22421. The bottom end of the inner rod 22422 forms a limiting portion, which abuts against the bottom end face of the outer sleeve 22421 to prevent the inner rod 22422 from disengaging upward from the outer sleeve 22421. By rotating the outer sleeve 22421 and the inner rod 22422, when adjusting the vertical dimension of the pressing assembly 224, only the outer sleeve 22421 rotates while the inner rod 22422 does not rotate. This prevents the inner rod 22422 from driving the movable electrode block 24 to rotate, thus avoiding interference between the movable electrode block 24 and the mounting base 21.

[0103] In other embodiments, the pressure rod 2242 and the pressure sleeve 2241 can also be connected by screws. Exemplarily, the pressure sleeve 2241 is provided with a mounting hole, and the pressure rod 2242 is provided with a plurality of threaded holes in the vertical direction. After the screw passes through the mounting hole, it can be connected to any one of the threaded holes to adjust the length of the pressure rod 2242 extending into the pressure sleeve 2241.

[0104] To make the pressing component 224 more stable when moving vertically, the mounting base 21 is provided with a vertically extending sliding hole, in which the pressing component 224 is slidably disposed, so as to provide guidance for the sliding of the pressing component 224.

[0105] Furthermore, the mounting base 21 is provided with an oil injection hole that communicates with the sliding hole, so that lubricating oil or other lubricating substances can be injected into the sliding hole through the oil injection hole, thereby reducing the friction between the pressing component 224 and the sliding hole, so that the sliding of the pressing component 224 is smoother and the pressing component 224 is prevented from getting stuck.

[0106] Optionally, the oil filling hole may be provided with an oil filling nozzle 213 to facilitate the introduction of lubricating oil or other lubricating substances.

[0107] To prevent the pressing component 224 from disengaging from the sliding hole, the pressure sleeve 2241 includes a pressure plate 22411 and a sleeve body 22412. The pressure plate 22411 is fixed to the top of the sleeve body 22412, the cam 222 abuts against the pressure plate 22411, and the sleeve body 22412 is slidably disposed in the sliding hole so that the sliding hole guides the sleeve body 22412.

[0108] In order for the pressing component 224 to be able to reset upward under the action of elastic restoring force, the pressing mechanism 22 also includes a third elastic element 225. The two ends of the third elastic element 225 are connected to the pressure plate 22411 and the mounting base 21, respectively. The third elastic element 225 can drive the pressing component 224 to move upward relative to the mounting base 21.

[0109] Optionally, the mounting base 21 is provided with a vertically extending guide hole. One end of the third elastic element 225 is located inside and connected to the guide hole, while the other end of the third elastic element 225 extends out of the guide hole and is connected to the pressure plate 22411. By placing the third elastic element 225 inside the guide hole, a guiding function is provided for the third elastic element 225, ensuring that the force exerted by the third elastic element 225 on the pressure plate 22411 is in the vertical direction. The third elastic element 225 is a spring, which has a simple structure and low cost.

[0110] To limit the rotation angle of the cam 222, the clamping mechanism 22 also includes a spring pin 223, which is mounted on the mounting base 21 and is parallel to the axis of the cam 222. The outer peripheral surface of the cam 222 has a plane 2221, which can slide against the spring pin 223 to limit the rotation limit position of the cam 222.

[0111] When it is necessary to clamp the bar, the operator presses down the handle 221, which in turn drives the cam 222 along... Figure 3 As shown, rotating counterclockwise, cam 222 pushes the pressing assembly 224 downward. When the plane 2221 on cam 222 rotates as shown... Figure 3 When the movable electrode block 24 is in contact with the spring pin 223, it is at its lowest position, and the spring pin 223 prevents the cam 222 from continuing to rotate.

[0112] When the operator releases handle 221, pressure plate 22411 moves upward under the action of elastic element 225, pushing cam 222 along... Figure 3 As shown, rotating clockwise disengages the spring pin 223 from the plane 2221. Optionally, the pressure plate 22411 moves upward under the action of the elastic element 225 until it reaches equilibrium.

[0113] In this embodiment, when the pressure plate 22411 moves upward under the action of the elastic member 225, the spring pin 223 abuts against the top surface of the pressure plate 22411 to limit the pressure plate 22411 from continuing to move upward. The abutment between the pressure plate 22411 and the spring pin 223 can limit the highest position of the pressure plate 22411.

[0114] Furthermore, when the spring pin 223 abuts against the top surface of the pressure plate 22411, the plane 2221 on the cam 222 also abuts against the pressure plate 22411 to restrict the rotation of the cam 222. Specifically, the radius of the spring pin 223 plus the distance between the axis of the spring pin 223 and the axis of the cam 222 is equal to the minimum distance between the axis of the cam 222 and the plane 2221, so that when the plane 2221 on the cam 222 abuts against the pressure plate 22411, the spring pin 223 also abuts against the pressure plate 22411.

[0115] Furthermore, the spring pin 223 extends out of the mounting base 21 so as to abut against the handle 221. When the pressure plate 22411 moves upward under the action of the elastic element 225, initially the pressure plate 22411 will push the cam 222 to rotate, thereby driving the handle 221 to rotate; after the handle 221 abuts against the spring pin 223, the spring pin 223 restricts the handle 221 from continuing to rotate, thereby restricting the cam 222 from continuing to rotate clockwise.

[0116] In some embodiments, the mounting base 21 is provided with a limiting member. When the pressure plate 22411 moves upward under the action of the elastic member 225, the handle 221 will abut against the limiting member to limit the highest position of the pressure plate 22411 by limiting the rotation of the handle 221.

[0117] To facilitate the assembly and disassembly of the electrode clamping device 20, the mounting base 21 includes an upper electrode base 211 and a lower electrode base 212 that can be detachably connected. The clamping mechanism 22 is disposed on the upper electrode base 211, and the fixed electrode block 23 is disposed on the lower electrode base 212. When assembling the electrode clamping device 20, the fixed electrode block 23 can be installed with the lower electrode base 212 first, the movable electrode block 24 can be installed with the clamping mechanism with the upper electrode base 211, and then the upper electrode base 211 and the lower electrode base 212 can be fixed, thereby reducing the assembly difficulty.

[0118] Optionally, the upper electrode holder 211 and the lower electrode holder 212 can be fixedly connected by bolts.

[0119] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A manual butt welding machine, characterized in that, include: Rack (10); The left electrode clamping device is fixedly mounted on the frame (10); A right electrode clamping device is mounted on the frame (10); A position adjustment mechanism (30) is provided on the frame (10). The position adjustment mechanism (30) includes a sliding shaft (31) and a hand crank assembly (32). The sliding shaft (31) is slidably provided on the frame (10) in the left and right direction. The sliding shaft (31) is connected to the right electrode clamping device. The hand crank assembly (32) is rotatably provided on the frame (10). The hand crank assembly (32) is sleeved on the outside of the sliding shaft (31) and threadedly connected to the sliding shaft (31). The rotation of the hand crank assembly (32) relative to the frame (10) can drive the sliding shaft (31) to move left and right. The position adjustment mechanism (30) further includes a clamping assembly, the clamping assembly comprising: A central shaft (331) is fixedly connected to the frame (10) and passes through the sliding shaft (31). A spiral sleeve (332) is sleeved outside the central shaft (331) and threadedly connected to the central shaft (331). The spiral sleeve (332) passes through the hand crank assembly (32). The hand crank assembly (32) can drive the spiral sleeve (332) to rotate. The spiral sleeve (332) can move relative to the hand crank assembly (32) along the axial direction of the central shaft (331). The first elastic element (334) abuts against the sliding shaft (31) at one end, and the first elastic element (334) can be compressed under the action of the spiral sleeve (332); One of the spiral sleeve and the hand crank assembly (32) is provided with a key, and the other is provided with a keyway extending axially along the central axis (331). The key is disposed in the keyway and can slide along the keyway. The clamping assembly also includes: The sliding sleeve (333) is slidably disposed outside the central shaft (331). One end of the sliding sleeve (333) abuts against the first elastic member (334), and the other end abuts against the spiral sleeve (332).

2. The manual butt welding machine according to claim 1, characterized in that, The rack (10) includes: The left electrode clamping device is fixedly mounted on the housing (12); The left support (14) and the right support (15) are provided on the housing (12). The left electrode clamping device and the right electrode clamping device are located between the left support (14) and the right support (15). The two ends of the sliding shaft (31) are slidably connected to the left support (14) and the right support (15) respectively. The sliding shaft (31) passes through the left electrode clamping device.

3. The manual butt welding machine according to claim 2, characterized in that, Both the left support (14) and the right support (15) are provided with linear bearings, and the two ends of the sliding shaft (31) are respectively connected to the corresponding linear bearings.

4. The manual butt welding machine according to claim 1, characterized in that, The right electrode clamping device includes a mounting base (21), one end of which is sleeved on the outside of the sliding shaft (31); Two retaining rings are provided on the slide shaft (31), and the mounting base is located between the two retaining rings.

5. The manual butt welding machine according to claim 4, characterized in that, The manual welding machine also includes: A leveling mechanism (40) is provided on the frame (10) and is used to adjust the height of the other end of the mounting base.

6. The manual butt welding machine according to claim 5, characterized in that, The leveling mechanism (40) includes: The height adjustment component (43) can slide vertically relative to the frame (10). The height adjustment component (43) is provided with two guide portions (44) spaced apart vertically. Part of the mounting base can extend between the two guide portions (44). The second elastic element (45) has one end abutting or connected to the frame (10) and the other end abutting or connected to the height adjustment element (43); The adjusting shaft (41) is vertically set and rotatably connected to the frame (10), and the adjusting shaft (41) is threadedly connected to the height adjusting component (43).

7. The manual butt welding machine according to claim 6, characterized in that, The second elastic element (45) is sleeved on the outside of the adjusting shaft (41).

8. The manual butt welding machine according to claim 6, characterized in that, The guide part (44) is a bearing.

9. The manual butt welding machine according to claim 1, characterized in that, Both the left electrode clamping device and the right electrode clamping device include: Mounting bracket (21); A fixed electrode block (23) is disposed on the mounting base (21); The movable electrode block (24) is located above the fixed electrode block (23); A clamping mechanism (22) is provided on the mounting base (21). The clamping mechanism (22) is connected to the movable electrode block (24) and is used to drive the movable electrode block (24) to press down on the fixed electrode block (23) or lift up.

10. The manual butt welding machine according to claim 9, characterized in that, The pressing mechanism (22) includes a cam (222), a handle (221), and a pressing assembly (224). The cam (222) is rotatably mounted on the mounting base (21). The handle (221) is connected to the cam (222) to drive the cam (222) to rotate. The pressing assembly (224) is elastically connected to the mounting base (21) in the vertical direction. The outer peripheral surface of the cam (222) abuts against the upper end of the pressing assembly (224). The lower end of the pressing assembly (224) is connected to the movable electrode block (24). The size of the pressing assembly (224) in the vertical direction is adjustable.

11. The manual butt welding machine according to claim 10, characterized in that, The pressing assembly (224) includes: The pressure sleeve (2241) abuts against the cam (222) at its top end and is elastically connected to the mounting base (21); A pressure rod (2242) is provided, the bottom end of which is connected to the movable electrode block (24), and the top end of which extends into the pressure sleeve (2241) and is connected to the pressure sleeve (2241). The length of the pressure rod (2242) extending into the pressure sleeve (2241) is adjustable.

12. The manual butt welding machine according to claim 11, characterized in that, The pressure rod (2242) is threadedly connected to the pressure sleeve (2241).

13. The manual butt welding machine according to claim 11, characterized in that, The mounting base (21) is provided with a vertically extending sliding hole and an oil injection hole communicating with the sliding hole, and the pressure sleeve (2241) is slidably disposed in the sliding hole.

14. The manual butt welding machine according to claim 13, characterized in that, The pressure sleeve (2241) includes a pressure plate (22411) and a sleeve (22412). The pressure plate (22411) is fixed to the top of the sleeve (22412). The cam (222) abuts against the pressure plate (22411). The sleeve (22412) is slidably disposed in the sliding hole.

15. The manual butt welding machine according to claim 10, characterized in that, The pressing mechanism (22) further includes an elastic element (225) that connects the pressing assembly (224) and the mounting base (21). The elastic element (225) is used to drive the pressing assembly (224) to move upward relative to the mounting base (21).

16. The manual butt welding machine according to claim 10, characterized in that, The clamping mechanism (22) further includes a spring pin (223), which is disposed on the mounting base (21) and is parallel to the axis of the cam (222); The outer peripheral surface of the cam (222) has a plane (2221) that can abut against the spring pin (223) to limit the rotational limit position of the cam (222).

17. The manual butt welding machine according to claim 10, characterized in that, The mounting base (21) includes an upper electrode base (211) and a lower electrode base (212) that can be detachably connected. The clamping mechanism (22) is disposed on the upper electrode base (211), the fixed electrode block (23) is disposed on the lower electrode base (212), and the sliding shaft (31) passes through the lower electrode base (212).

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