Tin furnace cover plate locking device

Abstract

The utility model discloses a tin furnace cover plate locking device which comprises a lock catch lower base, a lock catch upper base and a lock catch pull rod, a handle is arranged at the top of the lock catch pull rod, a lock catch pin is arranged at the position, close to the end of the bottom, of the lock catch pull rod, and the lock catch pin penetrates through the lock catch pull rod and extends out of one side or two sides of the lock catch pull rod. And the lock catch lower base is provided with an unlocking through hole corresponding to the lock catch pin. The requirement that the tin furnace cover plate is rapidly and conveniently assembled and disassembled when the tin furnace needs to be maintained is met, excessive equipment space outside the tin furnace body is not occupied, safety space does not need to be additionally arranged among a plurality of tin furnaces, the utilization rate of the equipment space is effectively improved, and the requirement for the overall size of the equipment is lowered. Meanwhile, all parts adopted by the utility model are not easy to damage in a high-temperature environment, so that the maintenance time and the cost expenditure of the equipment can be effectively reduced.

Description

Technical Field

[0001] This utility model relates to the field of electronic circuit board soldering technology, and in particular to a solder furnace cover locking device. Background Technology

[0002] Selective wave soldering (SWS) involves continuously ejecting molten solder from individual soldering nozzles via a mechanical or electromagnetic pump to create solder waves, thus soldering through-hole components on PCBs. Due to the characteristics of SWS, current SWS equipment typically consists of two main parts: the solder pot body and the solder pot lid. The lid is usually secured to the solder pot using snap-fit ​​or screw fasteners. Among these:

[0003] The locking mechanism requires at least two latches to secure the solder pot lid to the pot body via the outer wall of the pot. The latch design must allow sufficient safety space for easy and safe disassembly and assembly during high-temperature solder pot maintenance, which will increase the overall size of the soldering equipment. Furthermore, the placement of the latches outside the pot will also affect the design of multi-pot configurations on a single unit.

[0004] The screw tightening method does not require much additional equipment space, but the solder pot needs to be opened regularly to clean solder dross and maintain the drive pump. Repeated tightening and loosening of screws in a high-temperature environment can easily cause thread wear and screw breakage. If abnormalities such as thread wear or breakage residue occur when tightening screws, the machine needs to be stopped and the entire solder pot needs to be disassembled for repair. This will increase production costs, reduce production efficiency, and increase equipment maintenance expenses.

[0005] Therefore, existing technologies have shortcomings and need to be improved. Utility Model Content

[0006] The purpose of this invention is to overcome the shortcomings of the prior art and provide a tin furnace cover locking device.

[0007] The technical solution of this utility model is as follows: A tin furnace cover locking device is provided, including: a lower locking base disposed on the tin furnace body, an upper locking base disposed on the tin furnace cover, and a locking rod that can be rotatably passed through the upper locking base and the lower locking base in sequence. A handle is provided at the top of the locking rod, and a locking pin is provided at the position near the bottom end of the locking rod. The locking pin passes through the locking rod and extends out from one or both sides of the locking rod. The lower locking base is provided with an unlocking through hole corresponding to the locking pin. When the locking pin rotates with the locking rod to the position corresponding to the unlocking through hole, it can pass through the lower locking base through the unlocking through hole.

[0008] Furthermore, a step is provided in the inner hole of the base of the latch, and a spring is sleeved on the latch rod. One end of the spring contacts the step, and the other end contacts the bottom of the handle.

[0009] Furthermore, a locking groove is provided on the lower base of the latch, and the locking groove forms a 90° angle with the unlocking through hole. When the spring pushes the handle to lift the latch lever upward, it pushes the latch pin into the locking groove.

[0010] Furthermore, the base of the latch is provided with a positioning groove at the position corresponding to the unlocking through hole. The spring pushes the handle to lift the latch lever upward, so that the latch pin passes through the unlocking through hole and moves upward to be embedded in the positioning groove.

[0011] Furthermore, the spring is a high-temperature resistant spring.

[0012] Furthermore, the handle is a T-shaped handle, and the T-shaped handle and the locking pin are perpendicular or parallel to each other in space. The base of the locking pin is marked with corresponding markings for the orientation of the T-shaped handle when it is in the unlocked and locked states.

[0013] Furthermore, the handle is provided with a positioning pin fixing hole, and the locking rod is provided with a positioning through hole corresponding to the positioning pin fixing hole. The positioning pin of the rod passes through the positioning pin fixing hole and the positioning through hole in sequence, so that the two ends of the positioning pin of the rod are located in the positioning pin fixing hole, thereby connecting and fixing the handle and the locking rod.

[0014] By adopting the above solution, this utility model meets the need for quick and convenient installation and removal of the solder pot cover when maintenance is required, without occupying excessive equipment space outside the solder pot itself, and without requiring additional safety spaces between multiple solder pots, effectively improving equipment space utilization and reducing the requirements for the overall size of the equipment. Furthermore, the components used in this utility model are not easily damaged in high-temperature environments, effectively reducing equipment maintenance time and costs. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the assembly structure of the present invention with the tin furnace body and the tin furnace cover.

[0016] Figure 2 This is a schematic diagram of the structure of this utility model.

[0017] Figure 3 This is an exploded view of the present invention.

[0018] Figure 4 This is a structural diagram of the base of the lock.

[0019] Figure 5This is a schematic diagram of the bottom structure of the locking base.

[0020] Figure 6 This is a schematic diagram of the bottom structure of the base of the lock. Detailed Implementation

[0021] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] Please see Figures 1 to 3 This utility model provides a locking device for a tin furnace cover plate 2, including: a lower locking base 32 disposed on the tin furnace body 1, an upper locking base 31 disposed on the tin furnace cover plate 2, and a locking rod 33 that can be rotatably passed through the upper locking base 31 and the lower locking base 32 in sequence. The top of the locking rod 33 is provided with a handle 34, and a locking pin 35 is provided near the bottom end of the locking rod 33. The locking pin 35 passes through the locking rod 33 and extends out from one or both sides of the locking rod 33. The lower locking base 32 is provided with an unlocking through hole 321 corresponding to the locking pin 35. When the locking pin 35 rotates with the locking rod 33 to the position corresponding to the unlocking through hole 321, it can pass through the lower locking base 32 through the unlocking through hole 321.

[0023] When the latch pin 35 rotates to the position corresponding to the unlocking through hole 321, this position is the unlocked state. When the latch pin 35 does not correspond to the unlocking through hole 321, it is called the locked state. Generally, the optimal locked state is when the latch pin 35 is at a 90° angle to the unlocking through hole 321. To lock, align the latch pin 35 with the unlocking through hole 321 and press the handle 34 downwards, causing the latch pin 35 to pass through the unlocking through hole 321 and move below the latch base 32. Then, turn the handle 34, causing the latch lever 33 to rotate the latch pin 35 to the locked state. Release the handle 34 to lock the solder pot body 1 and the solder pot cover 2. When unlocking is required, simply turn the handle 34 or press down the handle 34 and turn the handle 34 to rotate the locking pin 35 to the position corresponding to the unlocking through hole 321. Pull the handle 33 upward to move the locking pin 35 through the unlocking through hole 321 to the top of the locking pin lower base 32, thereby separating it from the lower base. This unlocks the tin furnace body 1 and the tin furnace cover 2, making it easier to remove the tin furnace cover 2.

[0024] In some embodiments, please refer to Figure 3 , Figure 4The inner hole of the base 31 of the latch has a stepped position 311. A spring 36 is sleeved on the latch lever 33. One end of the spring 36 contacts the stepped position 311, and the other end contacts the bottom of the handle 34. When locking, pressing the handle 34 downwards causes the latch pin 35 to move downwards through the unlocking through hole 321, compressing the spring 36. Then, turning the handle 34 rotates the latch pin 35 to the locked position, releasing the handle 34. Under the elastic action of the spring 36, the handle 34 pushes the latch lever 33 upwards, thus pressing the latch pin 35 against the inner top surface of the lower base 32 of the latch, restricting the rotation of the latch pin 35, thereby satisfying the locking requirement. When unlocking, directly turning the handle 34, or pressing the handle 34 downwards to compress the spring 36, and then turning the handle 34 rotates the latch pin 35 to the unlocked position. Then, release the handle 34. Under the elastic action of the spring 36, the handle 34 will be pushed and the latch rod 33 will move upward, so that the latch pin 35 passes through the unlocking through hole 321 and is pressed against the bottom surface of the upper base 31 of the latch. This prevents the latch rod 33 from falling downward after the handle 34 is released, which would cause the latch pin 35 to fall back into the lower base 32 of the latch and affect the unlocking operation.

[0025] In some embodiments, please refer to Figure 5 The lower base 32 of the latch is provided with a locking groove 322, which forms a 90° angle with the unlocking through hole 321. When the spring 36 pushes the handle 34 to lift the latch lever 33 upward, it pushes the latch pin 35 into the locking groove 322. When in the locked state, the elasticity of the spring 36 pushes the handle 34 to lift the latch lever 33 upward, causing the latch pin 35 to move upward and embed into the locking groove 322. This limits the rotation of the handle 34, thus preventing accidental unlocking due to manual twisting or external forces such as vibration, which could cause the latch pin 35 to rotate to the position corresponding to the unlocking through hole 321. This ensures the stability and safety of the solder pot during soldering operations.

[0026] In some embodiments, please refer to Figure 6The base 31 of the latch has a positioning groove 312 corresponding to the unlocking through hole 321. The spring 36 pushes the handle 34 to lift the latch lever 33 upward, so that the latch pin 35 passes through the unlocking through hole 321 and moves upward to embed into the positioning groove 312. When unlocking, the elasticity of the spring 36 pushes the handle 34 and the latch lever 33 upward, so that the latch pin 35 moves upward and embeds into the positioning groove 312, thereby limiting the rotation state of the handle 34. This makes it easy to press down and turn the handle 34 to complete the locking work when it is necessary to close and lock, effectively ensuring the speed of the locking operation. It also avoids the situation where the latch pin 35 is not pushed into the unlocking through hole 321 and moved to the bottom of the locking base, but the handle 34 rotates accidentally, which may cause the operator to mistakenly judge that it has been locked, thus causing a safety accident during the processing.

[0027] In some embodiments, the spring 36 is a high-temperature resistant spring. Since the tin furnace body 1 is exposed to high temperatures during operation, using a high-temperature resistant spring can effectively ensure that the working performance of the spring 36 does not change under high-temperature conditions, thereby ensuring the stable operation of unlocking and unlocking.

[0028] In some embodiments, the handle 34 is a T-shaped handle 34, which is spatially perpendicular or parallel to the locking pin 35. The base 31 of the locking pin has corresponding markings indicating the orientation of the T-shaped handle 34 in the unlocked and locked states. By cooperating with the markings on the base 31 of the locking pin, operators can quickly determine whether the locking pin 35 is in a locked or unlocked state, thus making related operations faster and facilitating safety checks before processing.

[0029] In some embodiments, please refer to Figure 3 The handle 34 is provided with a positioning pin fixing hole 341, and the locking rod 33 is provided with a positioning through hole 331 corresponding to the positioning pin fixing hole 341. The rod positioning pin 37 passes through the positioning pin fixing hole 341 and the positioning through hole 331 in sequence, so that both ends of the rod positioning pin 37 are located in the positioning pin fixing hole 341, thereby connecting and fixing the handle 34 and the locking rod 33. By inserting the rod positioning pin 37 into the positioning through hole 331, and making both ends of the rod positioning pin 37 located in the positioning pin fixing hole 341 on the handle 34, the assembly and fixing requirements between the handle 34 and the locking rod 33 are met. Compared with the traditional threaded connection method, this utility model uses the rod positioning pin 37 to connect and fix the handle 34 and the locking rod 33, thereby ensuring that the relative angle relationship between each set of handle 34 and locking pin 35 is stable and reliable, so as to facilitate accurate indication of the locked and unlocked states through the markings on the handle 34 and the base 31 of the locking rod.

[0030] In summary, this invention meets the need for quick and convenient installation and removal of the solder pot cover during solder pot maintenance, without occupying excessive space outside the solder pot itself, and without requiring additional safety spaces between multiple solder pots, effectively improving equipment space utilization and reducing the requirements for the overall equipment size. Furthermore, the components used in this invention are not easily damaged in high-temperature environments, effectively reducing equipment maintenance time and costs.

[0031] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A tin furnace cover locking device, characterized in that, include: A lower locking base is installed on the solder pot body, an upper locking base is installed on the solder pot cover, and a locking lever is rotatably passed through the upper locking base and the lower locking base in sequence. The top of the locking lever is provided with a handle, and a locking pin is provided near the bottom end of the locking lever. The locking pin passes through the locking lever and extends out from one or both sides of the locking lever. The lower locking base is provided with an unlocking through hole corresponding to the locking pin. When the locking pin rotates with the locking lever to the position corresponding to the unlocking through hole, it can pass through the lower locking base through the unlocking through hole.

2. The tin furnace cover locking device according to claim 1, characterized in that, The base of the latch has a stepped position in the inner hole, and a spring is sleeved on the latch rod. One end of the spring contacts the stepped position, and the other end contacts the bottom of the handle.

3. The tin furnace cover locking device according to claim 2, characterized in that, The base of the latch is provided with a locking groove, which forms a 90° angle with the unlocking through hole. When the spring pushes the handle to lift the latch lever upward, it pushes the latch pin into the locking groove.

4. The tin furnace cover locking device according to claim 2, characterized in that, The base of the latch is provided with a positioning groove at the position corresponding to the unlocking through hole. The spring pushes the handle to lift the latch rod upward, so that the latch pin passes through the unlocking through hole and moves upward to be embedded into the positioning groove.

5. The tin furnace cover locking device according to any one of claims 2 to 4, characterized in that, The spring is a high-temperature resistant spring.

6. The tin furnace cover locking device according to claim 1, characterized in that, The handle is a T-shaped handle, and the T-shaped handle and the locking pin are perpendicular or parallel to each other in space. The base of the locking pin is marked with corresponding markings for the orientation of the T-shaped handle in the unlocked and locked states.

7. The tin furnace cover locking device according to claim 1, characterized in that, The handle is provided with a positioning pin fixing hole, and the locking rod is provided with a positioning through hole corresponding to the positioning pin fixing hole. The positioning pin of the rod passes through the positioning pin fixing hole and the positioning through hole in sequence, so that the two ends of the positioning pin of the rod are located in the positioning pin fixing hole, thereby connecting and fixing the handle and the locking rod.

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