Lift-locking mold welding machine

Abstract

This application discloses a lifting self-locking mold welding machine, relating to the field of lifting platforms, including a machine top plate, a lifting mechanism, a stroke adjustment mechanism, and a mold carrier plate; the lifting mechanism and the stroke adjustment mechanism are suspended from the machine top plate; the stroke adjustment mechanism includes a rotary screw, a rotary mechanism, and a locking mechanism; the upper end of the rotary screw passes through the machine top plate, and the lower end is equipped with a stroke adjustment block; the rotary mechanism and the locking mechanism are sleeved on the rotary screw above the machine top plate; the rotary mechanism and the locking mechanism are respectively provided with a first toothed ring and a second toothed ring that cooperate with each other; this welding machine can quickly change the stroke range of the lifting mechanism according to needs and automatically lock it. Compared with the locking structure of traditional bolts and nuts, its adjustment process is more convenient. It is only necessary to pick up the rotary handwheel to rotate it, and release it to automatically lock it, eliminating the step of manually turning the nut to tighten it. The method of locking the rotary handwheel by gravity can prevent it from falling off, improving the flexibility of the equipment.

Description

Technical Field

[0001] This application relates to the field of lifting platforms, and particularly to a lifting self-locking mold welding platform used in automated welding equipment. Background Technology

[0002] The adjusting lifting device is a component on automated welding equipment that controls the stroke size or position of a certain mechanical part. Unlike high-precision multi-axis robotic arms, the lifting device itself has a simple reciprocating stroke and is mostly controlled by control circuits such as motors and cylinders.

[0003] On automated welding machines, the lifting device requires frequent reciprocating motion, with its vertical stroke adjusted based on the part type. Since the welding arm itself needs high-precision, multi-degree-of-freedom welding, and the integrated welding arm structure doesn't require frequent adjustments, using a separate electrical control system would not only increase the machine size and space utilization but also raise costs. Furthermore, on machines with high precision requirements, the lifting mechanism must also have a locking function to ensure all components are locked, preventing high-frequency vibrations from causing loose parts that could alter the stroke or position, ultimately affecting the machine's accuracy. Using a bolt-and-nut locking structure requires manual disassembly and adjustment during lifting, resulting in low operational efficiency. Summary of the Invention

[0004] This application provides a lifting self-locking mold welding machine, including a machine top plate, a lifting mechanism, a stroke adjustment mechanism, and a mold carrier plate; welding equipment is mounted on the mold carrier plate, and the lifting mechanism and the stroke adjustment mechanism are suspended through the machine top plate and connected to the mold carrier plate respectively; wherein, the lifting mechanism is used to control the lifting of the mold carrier plate, and the stroke adjustment mechanism is used to change the stroke range of the lifting mechanism;

[0005] The stroke adjustment mechanism includes a rotary screw, a rotary mechanism, and a locking mechanism; the upper end of the rotary screw passes through the top plate of the machine base, and the lower end is equipped with a stroke adjustment block;

[0006] The rotary adjustment mechanism and the locking mechanism are sleeved on the top of the rotary adjustment screw, the top of the rotary adjustment screw passes through the top plate of the machine base, and the locking mechanism is fixed on the top plate of the machine base.

[0007] The adjusting mechanism and the locking mechanism are respectively equipped with a first toothed ring and a second toothed ring that cooperate with each other; when the first toothed ring and the second toothed ring are engaged, the travel range of the lifting mechanism is locked; when the first toothed ring and the second toothed ring are separated, the travel range of the lifting mechanism is changed by rotating the adjusting mechanism to adjust the position of the travel adjusting block on the adjusting screw.

[0008] Optionally, the adjusting mechanism includes an adjusting sleeve and an adjusting handwheel; the upper end of the adjusting screw is provided with a keyway, and a flat key protruding from the hole is embedded in the keyway;

[0009] The lower end of the rotary sleeve is provided with a first fixing groove that is adapted to the rotary screw and the protruding part of the flat key, and the upper end is provided with a second fixing groove that communicates with the first fixing groove. The outer ring is provided with a rotary tooth ring.

[0010] When the rotary screw is connected, the flat key is placed into the keyway in the first fixed groove area.

[0011] Optionally, the locking mechanism includes a mounting plate and a gear seat sleeved on the rotary screw; the mounting plate is fixed to the top plate of the machine base, and the gear seat is fastened to the mounting plate by a connector.

[0012] Optionally, the upper part of the gear seat is provided with the second gear ring, the size of the second gear ring is the same as the size of the rotary gear ring, and the number and spacing of the tooth grooves are the same.

[0013] Optionally, the inner ring of the rotary handwheel is provided with a protruding first toothed ring, and the size of the first toothed ring and the rotary toothed ring are adapted to each other.

[0014] Specifically, a sealing plug is inserted into the second fixing groove, and a compression spring is sleeved between the rotary toothed ring and the sealing plug.

[0015] Specifically, a support plate is also provided below the top plate of the machine base. The support plate is parallel to the mold carrier plate, and the stroke adjustment mechanism is located between the support plate and the mold carrier plate.

[0016] The end of the rotary screw is inserted into a fixing block through a bushing, and the fixing block is fixedly installed on the support plate.

[0017] Optionally, the lifting mechanism includes a cylinder, a push rod, a guide rail, and a slider; the cylinder is installed above the top plate of the machine base and is connected to the mold carrier plate through the push rod;

[0018] The guide rail is mounted on the support plate and is parallel to the rotary screw; the slider is slidably mounted on the guide rail and installed on the back of the mold carrier plate.

[0019] Optionally, the lifting mechanism further includes a limiting block, which is installed on the back of the mold carrier plate and is in the same vertical direction as the stroke adjustment block.

[0020] Optionally, the guide rails are symmetrically arranged on both sides of the support plate.

[0021] The beneficial effects of the technical solution provided in this application include at least the following: Using a lifting mechanism with a cylinder-guide rail combination instead of motor control reduces costs, eliminates the need for a complex electrical control system, and reduces the equipment's spatial volume. For different parts requiring different lifting strokes, a stroke adjustment mechanism is used. This involves two cooperating toothed rings on the rotary adjustment mechanism and the locking mechanism. When the toothed rings align, the rotary handwheel engages with the two toothed rings under gravity, achieving self-locking. When the toothed ring on the locking mechanism separates from the rotary adjustment ring, the position of the adjusting block on the lead screw is changed by rotating the rotary adjustment mechanism. After determining the target height, only a fine adjustment of the rotary sleeve is needed to align the two racks before releasing the handwheel, which is then lowered and locked by gravity. Compared to the traditional bolt and nut locking structure, this structure offers greater convenience in adjustment. Simply lift the rotary handwheel to rotate it, and release it to automatically lock it, eliminating the need for manual tightening of the nut. Furthermore, the gravity-based locking mechanism prevents the handwheel from falling off, improving equipment flexibility. Attached Figure Description

[0022] Figure 1 This is a structural diagram of the lifting self-locking mold welding machine provided in the embodiments of this application;

[0023] Figure 2 These are detailed drawings of the lifting mechanism, stroke adjustment mechanism, and machine top plate;

[0024] Figure 3 This is a connection structure diagram of the mold carrier plate and the stroke adjustment mechanism;

[0025] Figure 4 yes Figure 3 Enlarged view of point A in the middle;

[0026] Figure 5 This is an exploded view of the stroke adjustment mechanism;

[0027] Figure 6 Here is a detailed view of the rotary lead screw;

[0028] Figure 7 This is a diagram showing the connection relationship between the rotary sleeve and the gear seat;

[0029] Figure 8 This is a diagram showing the connection relationship between the adjusting sleeve and the gear seat in another embodiment;

[0030] Figure 9 Here is a detailed view of the rotary sleeve;

[0031] Figure 10 This is a schematic diagram of assembling the adjustment handwheel.

[0032] Reference numerals: Machine base top plate-10, lifting mechanism-20, stroke adjustment mechanism-30, mold carrier plate-40, support plate-50, cylinder-21, push rod-22, guide rail-23, slider-24, limit block-25, rotary screw-31, rotary mechanism-32, locking mechanism-33, stroke adjustment block-34, fixing block-35, keyway-311, flat key-312, first gear ring-321, rotary sleeve-322, rotary handwheel-323, second gear ring-331, gear seat-332, mounting plate-333, rotary handwheel-334, first fixing groove-3221, second fixing groove-3222, rotary gear ring-3223, sealing plug-3224, compression spring-3225. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0034] In this article, "multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0035] Figure 1 The lifting self-locking mold welding machine provided in this application embodiment includes a machine top plate 10, a lifting mechanism 20, a stroke adjustment mechanism 30, and a mold carrier plate 40. The mold carrier plate 40 is the panel for mounting welding equipment (such as welding arms and clamp arms, stamping mechanisms, and mold assemblies). The welding arms and clamp arms and the mold assembly themselves are adapted to corresponding electrical control systems according to the specific functions they perform, such as a control system composed of high-precision motors, sensors, and various electrical control components. The lifting mechanism 20 and the stroke adjustment mechanism 30 are suspended and installed through the machine top plate 10 and are respectively connected to the mold carrier plate 40. The lifting process of the mold carrier plate 40 is controlled by the lifting mechanism 20, which can be motor-controlled or cylinder-controlled. The stroke adjustment mechanism 30 is a structure that changes the stroke of the lifting mechanism 20 according to different part models to change the maximum travel distance.

[0036] like Figure 4 and Figure 5 As shown, the stroke adjustment mechanism 30 includes a rotary lead screw 31, a rotary mechanism 32, and a locking mechanism 33. The upper end of the rotary lead screw 31 passes through the top plate 10 of the machine base, and the lower end is equipped with a stroke adjustment block 34. This stroke adjustment block 34 is used to limit the maximum travel distance of the stroke adjustment mechanism 30.

[0037] The adjusting mechanism 32 and the locking mechanism 33 are sleeved on the adjusting screw 31 above the machine base top plate 10, and the locking mechanism 33 is fixed on the machine base top plate 10. The adjusting mechanism 32 and the locking mechanism 40 are respectively provided with a first toothed ring 321 and a second toothed ring 331 that cooperate with each other. (Refer to...) Figure 7 and Figure 10 When the first gear ring 321 and the second gear ring 331 are engaged, the stroke is locked. When the first gear ring 321 and the second gear ring 331 are disengaged, the stroke adjustment block 35 is changed at the position of the adjustment screw 31 by rotating the adjustment mechanism 32, thereby changing the stroke distance of the lifting mechanism 20.

[0038] To increase the stability of the stroke adjustment mechanism 30 and the lifting mechanism 20 during operation, such as Figures 2-4 As shown, a support plate 50 is also provided below the top plate 10 of the machine base. The support plate 50 is parallel to the mold carrier plate 40, and the stroke adjustment mechanism 30 is located between the support plate 50 and the mold carrier plate 40. The end of the rotary screw 31 is inserted into the fixing block 35 through a bushing, and the fixing block 35 is fixedly installed on the support plate 50 through a connector. The stroke adjustment block 34 is sleeved on the rotary screw 31 and located between the two plates. Its width is greater than the distance between the two plates, and its purpose is to adjust the height of the stroke adjustment block 35 on the screw.

[0039] The limiting block 25 is fixedly installed on the back of the mold carrier plate 40 and is in the same vertical direction as the stroke adjusting block 34. It is controlled by the cylinder 21 to move directly above the stroke adjusting block 34 along with the mold carrier plate 40. In one possible embodiment, the limiting block 25 is designed to be the same size as the stroke adjusting block 34, and has an arc-shaped notch surrounding the lead screw to achieve a blocking effect. Figure 2 As can be seen from the diagram, the height between the bottom of the machine top plate 10 and the stroke adjustment block 34 is the effective stroke of the lifting mechanism.

[0040] The lifting mechanism 20 includes a cylinder 21, a push rod 22, a guide rail 23, a slider 24, and a limit block 25. The cylinder 21 is mounted above the machine base top plate 10 and connects to the mold carrier plate 40 via the push rod 22, driving it to move up and down. The guide rail 23 is mounted on the support plate 50 and is parallel to the adjusting screw 31. The slider 24 is slidably mounted on the guide rail 23 and fixedly installed on the back of the mold carrier plate 40. To avoid vibration caused by simply lifting the mold carrier plate 40 via the push rod 22, the guide rail 23 and slider 24 are provided on the support plate 50 to connect the mold carrier plate 40, improving stability. In one embodiment, a pair of guide rails and several sets of sliders are symmetrically arranged on both sides of the support plate 50 to improve the lifting and sliding effect. Because this lifting mechanism 20 uses a small-volume cylinder drive instead of a motor, it not only reduces equipment space but also avoids the use of complex electrical control systems, reducing cost investment.

[0041] Figure 5This is an exploded schematic diagram of the stroke adjustment mechanism 30. Figure 6 This is a detailed drawing of the adjusting screw. The stroke adjustment mechanism 30 includes an adjusting screw 31, an adjusting mechanism 32, and a locking mechanism 33. A keyway 311 is formed at the upper end of the adjusting screw 31, and a flat key 312 protruding from a hole is embedded within the keyway 311. The adjusting mechanism 32 includes an adjusting sleeve 322 and an adjusting handwheel 323. (The last sentence appears to be incomplete and possibly refers to a different drawing.) Figure 9 As shown, the lower end of the rotary sleeve 322 has a first fixing groove 3221 that matches the protruding part of the rotary screw 31 and the flat key 312, and the upper end has a second fixing groove 3222 that communicates with the first fixing groove 3221. An integrated rotary gear ring 3223 is provided on the outer ring of the rotary sleeve 322. The rotary handwheel 323 is sleeved on the outside of the rotary sleeve 322. When the rotary handwheel 323 is sleeved on the rotary screw 31, the flat key 312 is inserted into the keyway 311 in the area of ​​the first fixing groove 3221, as shown. Figure 10 As shown, in this installation mode, the lead screw 10 can be rotated simply by applying the adjusting sleeve 32.

[0042] like Figure 5 and Figure 7 As shown, the locking mechanism 33 includes a second gear ring 331, a gear seat 332, and a mounting plate 333. The gear seat 332 is located above the mounting plate 331, and the two are fixed to the machine base top plate 10 by bolts or other connecting parts. The gear seat 332 and the mounting plate 333 are sleeved on the outside of the rotary sleeve 322 through a centrally opened shaft hole. Gear rings are respectively provided on the rotary sleeve 322 and the locking mechanism 33. The gear seat 332 includes a lower mounting part and an upper gear part. The size of the mounting part is the same as the size of the mounting plate 331. The second gear ring 331 of the gear part is directly opened on the outer wall, while the outer ring of the rotary sleeve 322 is a rotary gear ring 3223. However, the two gear rings are the same size, the racks are vertically distributed, and the number and spacing of the tooth grooves are the same.

[0043] The rack of the first toothed ring 321 in the rotary handwheel 334 is also vertically distributed. This vertically distributed rack does not need to be tightened by hand. It can rely on the gravity of the rotary handwheel 334 to fall and engage the second toothed ring and the rotary toothed ring.

[0044] Because the adjusting sleeve 322 directly engages with the adjusting screw 31, and the locking mechanism 33 is fixed to the top plate 10 of the machine and cannot rotate, and the outer diameter and rack spacing of the two gear rings are consistent with the first gear ring 321 inside the adjusting handwheel 323. Because the second gear ring 331 has a toothed groove on the gear section, while the adjusting gear ring 3223 has a toothed groove protruding from the outside of the rotating sleeve 322, and they have the same diameter, they will not cross-mesh no matter how the adjusting sleeve 322 rotates. Therefore, when the adjusting handwheel 323 is installed on the adjusting sleeve 322, the height of the stroke adjusting block 34 on the adjusting screw 31 can be adjusted arbitrarily.

[0045] In the embodiment of the application, the outer diameter of the rotary handwheel is larger than that of the rotary sleeve. It can be designed as a metal structure with increased thickness to increase its weight. Under the action of the rotary sleeve 322, when the grooves of the second toothed ring 331 and the rotary toothed ring 3223 are aligned, the rack of the first toothed ring 321 slides into the grooves of the second and rotary toothed rings under gravity, engaging with them. At this time, the rotary screw 31 is in a locked state. When the first toothed ring 321 is withdrawn from the groove of the second toothed ring 331 and engages with the rack of the rotary toothed ring 3223, the worker rotates the rotary handwheel 323, indirectly driving the rotary screw 31 to rotate through the rotary sleeve 322, thereby changing the height of the stroke adjustment block 35. After determining the target height, only a fine adjustment of the rotary sleeve 322 is needed to align the two racks before releasing the handwheel, and gravity lowers and locks the rotary handwheel 323.

[0046] Compared to the locking mechanism of traditional bolts and nuts, this structure is more convenient to adjust. Simply pick up the adjustment handwheel to rotate it, and release it to lock automatically, eliminating the need to manually tighten the nut. The handwheel's gravity-based locking mechanism also prevents it from falling off.

[0047] In some other embodiments, because the machine tool generates high-frequency movements when welding parts or performing other mechanical actions, and to prevent locking failure caused by some misoperation that completely pulls the rotary handwheel out of the rotating sleeve 322, this application provides an anti-detachment device on the rotary sleeve.

[0048] like Figures 8-10 As shown, because the first gear ring 321 is convex, this application connects the first fixing groove 3221 and the second fixing groove 3222, and inserts a sealing plug 3224 into the second fixing groove 3222. A compression spring 3225 is fitted between the adjusting gear ring 3223 and the sealing plug 3224. For the adjusting handwheel 323, the same hole as the sealing plug 3224 is opened at the top, and it is installed into the second fixing groove 3222 through this hole. Connecting the two fixing grooves in this way facilitates installation and removal. The flat key is inserted from the second fixing groove 3222 into the keyway, and the compression spring 3225 is fitted onto the outside of the adjusting sleeve. After tightening the sealing plug 3224, the adjusting handwheel can be prevented from falling off, and even high-frequency vibration will not cause the lead screw to rotate. When the worker needs to make adjustments, the adjustment handwheel is pulled up, and the compression spring 3225 is in a compressed state. When the handwheel is released, it is locked again under the action of gravity and the compression spring, which improves the installation and reliability of the device.

[0049] The preferred embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above. The devices and structures not described in detail should be understood as being implemented in a conventional manner in the art. Any person skilled in the art can make many possible changes and modifications, or equivalent changes to equivalent embodiments without departing from the technical solution of the present invention. This does not affect the substantive content of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the protection scope of the technical solution of the present invention.

Claims

1. A lifting self-locking mold welding machine, characterized in that, The system includes a machine base plate (10), a lifting mechanism (20), a stroke adjustment mechanism (30), and a mold carrier plate (40). Welding equipment is mounted on the mold carrier plate (40). The lifting mechanism (20) and the stroke adjustment mechanism (30) are suspended from the machine base plate (10) and connected to the mold carrier plate (40) respectively. The lifting mechanism (20) is used to control the lifting of the mold carrier plate (40), and the stroke adjustment mechanism (30) is used to change the stroke range of the lifting mechanism (20). The stroke adjustment mechanism (30) includes a rotary screw (31), a rotary mechanism (32), and a locking mechanism (33); the upper end of the rotary screw (31) passes through the top plate (10) of the machine base, and the lower end is equipped with a stroke adjustment block (34); The rotary adjustment mechanism (32) and the locking mechanism (33) are sleeved on the top end of the rotary adjustment screw (31), the top end of the rotary adjustment screw (31) passes through the top plate (10) of the machine base, and the locking mechanism (33) is fixed on the top plate (10) of the machine base; The rotary adjustment mechanism (32) and the locking mechanism (33) are respectively provided with a first toothed ring (321) and a second toothed ring (331) that cooperate with each other; when the first toothed ring (321) and the second toothed ring (331) are engaged, the travel range of the lifting mechanism (20) is locked; when the first toothed ring (321) and the second toothed ring (331) are separated, the travel range of the lifting mechanism (20) is changed by rotating the rotary adjustment mechanism (32) to adjust the position of the travel adjustment block (34) on the rotary screw (31); The rotary adjustment mechanism (32) includes a rotary adjustment sleeve (322) and a rotary adjustment handwheel (323); the upper end of the rotary adjustment screw (31) is provided with a keyway (311), and a flat key (312) protruding from the hole is embedded in the keyway (311); The lower end of the rotary sleeve (322) is provided with a first fixing groove (3221) that is adapted to the protruding part of the rotary screw (31) and the flat key (312), and the upper end is provided with a second fixing groove (3222) that communicates with the first fixing groove (3221). A rotary toothed ring (3223) is provided on the outer ring. The rotary handwheel (323) is sleeved on the outside of the rotary sleeve (322). When the rotary screw (31) is connected, the flat key (312) is placed into the keyway (311) in the area of ​​the first fixing groove (3221).

2. The lifting self-locking mold welding machine according to claim 1, characterized in that, The locking mechanism (33) includes a gear seat (332) and a mounting plate (333) sleeved on the rotary screw (31); the mounting plate (333) is fixed on the top plate (10) of the machine base, and the gear seat (332) is fastened to the mounting plate (333) by a connector.

3. The lifting self-locking mold welding machine according to claim 2, characterized in that, The upper part of the gear seat (332) is provided with the second gear ring (331). The size of the second gear ring (331) is the same as that of the rotary gear ring (3223), and the number and spacing of the tooth grooves are the same.

4. The lifting self-locking mold welding machine according to claim 3, characterized in that, The inner ring of the rotary handwheel (323) is provided with a protruding first toothed ring (321), and the size of the first toothed ring (321) and the rotary toothed ring (3223) are adapted to each other.

5. The lifting self-locking mold welding machine according to claim 2, characterized in that, A sealing plug (3224) is inserted into the second fixing groove (3222), and a compression spring (3225) is sleeved between the rotary toothed ring (3223) and the sealing plug (3224).

6. The lifting self-locking mold welding machine according to claim 1, characterized in that, A support plate (50) is also provided below the top plate (10) of the machine base. The support plate (50) and the mold carrier plate (40) are parallel. The stroke adjustment mechanism (30) is located between the support plate (50) and the mold carrier plate (40). The end of the rotary screw (31) is inserted into the fixing block (35) through the bushing, and the fixing block (35) is fixedly installed on the support plate (50).

7. The lifting self-locking mold welding machine according to claim 6, characterized in that, The lifting mechanism (20) includes a cylinder (21), a push rod (22), a guide rail (23), and a slider (24); the cylinder (21) is installed above the top plate (10) of the machine base and is connected to the mold carrier plate (40) through the push rod (22); The guide rail (23) is disposed on the support plate (50) and is parallel to the rotary screw (31); the slider (24) is slidably disposed on the guide rail (23) and is installed on the back of the mold carrier plate (40).

8. The lifting self-locking mold welding machine according to claim 7, characterized in that, The lifting mechanism (20) also includes a limiting block (25), which is installed on the back of the mold carrier plate (40) and is in the same vertical direction as the stroke adjustment block (34).

9. The lifting self-locking mold welding machine according to claim 7, characterized in that, The guide rails (23) are symmetrically arranged on both sides of the support plate (50).

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