An automatic positioning device for evaporator fin assembly

Abstract

This utility model relates to the field of evaporator fin technology and discloses an automatic positioning device for evaporator fin assembly. The device includes a positioning component for assembling and positioning the fins. The positioning component includes a base, a movable frame, a limiting block, a connecting rod, and a spline shaft. Through the cooperation of the internal components of the positioning component, the limiting block is flipped upwards at a certain angle, and the distance between the limiting blocks is widened. This avoids the problem of the spacing between the limiting blocks being too small, which would affect the insertion of subsequent fins after the initial fin insertion. Furthermore, by tilting the limiting block at a certain angle, it eliminates the need to insert a hand into the device. After the fin is inserted, the space inside the device is occupied. With the limiting block tilted upwards, when the fin is inserted first, part of the sidewall where the fin contacts the limiting block is exposed, eliminating the need for workers to insert their hands into the device to adjust the fin position.

Description

Technical Field

[0001] This utility model belongs to the field of evaporator fin technology, specifically, it relates to an automatic positioning device for evaporator fin assembly. Background Technology

[0002] The evaporator consists of a coil and several fins. The fins have mounting grooves corresponding to the coils, and the coils are inserted into the mounting grooves.

[0003] A document with publication number (CN221910697U) discloses a semi-automatic assembly device for finned evaporators used in refrigerators, belonging to the technical field of refrigerator evaporator production. The device includes a frame on which a coil pushing mechanism and a fin placement platform are mounted. The coil pushing mechanism includes a base, a first cylinder, a second cylinder, a pushing frame, and a fixing block. The fixing block is fixed to the end of the base, and its surface has insertion holes. The device has a simple structure, low manufacturing cost, and is easy to use. Operators only need to place the coil onto the pushing frame and evenly insert the fins onto the fin placement platform. The first cylinder then pushes the coil into the fins, making assembly relatively simple. Furthermore, to improve production efficiency, the device has two fin placement platforms that assemble the fins alternately, thereby greatly improving production efficiency.

[0004] During installation, the operator inserts the fins into the limiting groove of the installation device, and then pushes the condenser tube to install multiple fins onto it. After installation, the condenser is removed. When placing the fins, to prevent deformation during installation, they are held in grooves. However, this method causes several inconveniences in inserting the fins. This is because the small spacing between fins after the initial insertion hinders the insertion of subsequent fins; furthermore, different fin models have different lengths.

[0005] In view of this, this utility model is hereby proposed. Utility Model Content

[0006] To solve the technical problems of fin assembly, the basic concept of the technical solution adopted by this utility model is as follows:

[0007] An automatic positioning device for evaporator fin assembly includes a positioning component for positioning the fins during assembly. The positioning component includes a base, a movable frame, a limiting block, a connecting rod, and a splined shaft. The movable frame is movably connected to the base. An array of limiting blocks is arranged on the base. Multiple connecting rods are connected by transmission, and the middle of each connecting rod is connected to the corresponding limiting block. The splined shaft is rotatably connected to the side of the base, and the limiting block is connected to the splined shaft by transmission.

[0008] In a preferred embodiment of this utility model, mounting blocks are symmetrically arranged on the base, each mounting block is fixedly connected to the base, the end of the spline shaft is rotatably connected to the mounting block, and one end of the spline shaft is fixedly connected to a lever.

[0009] In a preferred embodiment of this utility model, a sliding frame is slidably connected to one end of the mounting block, the sliding frame abuts against the lever, and the connecting part between the lever and the spline shaft passes through the corresponding mounting block and is rotatably connected to the mounting block.

[0010] In a preferred embodiment of the present invention, the ends of each connecting rod are rotatably connected, a transmission frame is rotatably connected to the middle of each connecting rod, each transmission frame is slidably connected to a spline shaft, and a connecting shaft is rotatably connected to the middle of one end of the connecting rod, the connecting shaft being rotatably connected to the corresponding lever.

[0011] In a preferred embodiment of this utility model, a fixing block is fixedly connected to the corresponding lever, a limiting rod is slidably connected to the fixing block, a spring is sleeved on the limiting rod, the ends of the spring are fixedly connected to the limiting rod and the fixing block respectively, and the limiting rod is engaged with the connecting shaft.

[0012] In a preferred embodiment of this utility model, the base has an installation position, a lead screw is rotatably connected to the base, the movable frame is threadedly connected to the lead screw, and the movable frame has a parallel sliding groove.

[0013] In a preferred embodiment of this utility model, the movable frame is provided with a plurality of limiting plates arranged in an array, each limiting plate being slidably connected to the movable frame.

[0014] In a preferred embodiment of this utility model, each of the limiting plates is symmetrically provided with fastening bolts, and each fastening bolt is locked to the limiting plate by threads.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] 1. This automatic positioning device for evaporator fin assembly, through the cooperation of internal components of the positioning assembly, flips and tilts the limiting blocks upward at a certain angle, and widens the gap between the limiting blocks. This avoids the problem that if the gap between the limiting blocks is too small, subsequent fin insertion will be affected by the small gap between the fins. Furthermore, tilting the limiting blocks at a certain angle eliminates the need to insert a hand into the device. After the fins are inserted, the space inside the device is occupied. With the limiting blocks tilted upward, when the fins are inserted first, the sidewalls of the fins in contact with the limiting blocks are partially exposed, eliminating the need for workers to insert their hands into the device to adjust the position of the fins.

[0017] 2. This automatic positioning device for evaporator fin assembly involves a fixed block that deforms and applies the deformation force to a spring. The spring is then pushed to engage with the connecting shaft again, thereby limiting the position of the connecting shaft and interlocking the position of the connecting rod. This ensures stability after the connecting rod position is adjusted. The limiting plate maintains the spacing between the fins, preventing the fins from being too close and affecting the subsequent fin performance.

[0018] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0019] In the attached diagram:

[0020] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0021] Figure 2 This is a schematic diagram showing the disassembled parts of this utility model;

[0022] Figure 3 This is a schematic diagram of the upper structure of the limiting block of this utility model;

[0023] Figure 4 This utility model Figure 2 Enlarged schematic diagram of the structure at point A in the middle;

[0024] Figure 5 This is a schematic diagram of the movable frame structure of this utility model.

[0025] In the diagram: 1. Base; 2. Movable frame; 21. Limiting plate; 22. Fastening bolt; 23. Lead screw; 3. Limiting block; 31. Transmission frame; 32. Connecting rod; 33. Connecting shaft; 34. Limiting rod; 35. Spring; 36. Fixing block; 4. Mounting block; 41. Sliding frame; 42. Lever; 43. Splined shaft. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model.

[0027] Please see Figure 1-5An automatic positioning device for evaporator fin assembly includes a positioning component for positioning the fins during assembly. The positioning component includes a base 1, a movable frame 2, limiting blocks 3, connecting rods 32, and a splined shaft 43. The movable frame 2 is movably connected to the base 1. The limiting blocks 3 are arrayed on the base 1. Multiple connecting rods 32 are connected via a transmission mechanism, with the middle of each connecting rod 32 transmitting power to its corresponding limiting block 3. The splined shaft 43 is rotatably connected to the side of the base 1, and the limiting blocks 3 are transmitted to the splined shaft 43. Through the cooperation of the internal components of the positioning component, the limiting blocks 3 are flipped upwards and tilted at a certain angle, thus widening the spacing between the limiting blocks 3. This avoids the problem of the spacing between the limiting blocks 3 being too small, which would affect the insertion of subsequent fins after the initial fin insertion. Furthermore, by tilting the limiting blocks 3 at a certain angle, it is not necessary to insert a hand into the device. After inserting the fins, the space inside the device is occupied. With the limiting blocks 3 tilted upwards, when the fins are inserted first, part of the side wall where the fins contact the limiting blocks 3 is exposed. This eliminates the need for workers to put their hands into the device to adjust the position of the fins. Moreover, with the movable frame 2 and the limiting blocks 3 as fulcrums, it is only necessary to align them first, without fully inserting them. After assembly, the limiting blocks 3 are then reset to fully insert the fins.

[0028] It is worth noting that this optimization scheme is aimed at the assembly and positioning of the fins. Therefore, the coil installation part in the semi-automatic assembly device for a finned evaporator for a refrigerator (CN221910697U) is not shown in the accompanying drawings and is fully disclosed in the prior art. Therefore, it is not described in detail in this article and will not be elaborated here.

[0029] The base 1 is symmetrically equipped with mounting blocks 4, each fixedly connected to the base 1. The end of a splined shaft 43 is rotatably connected to a mounting block 4. One end of the splined shaft 43 is fixedly connected to a lever 42. A sliding frame 41 is slidably connected to the mounting block 4 at one end, abutting against the lever 42. The connection between the lever 42 and the splined shaft 43 passes through the corresponding mounting block 4 and is rotatably connected to it. The ends of each connecting rod 32 are rotatably connected, and a transmission frame 31 is rotatably connected to the middle of each connecting rod 32. Each transmission frame 31 is slidably connected to the splined shaft 43, and a connecting shaft 33 is rotatably connected to the middle of one connecting rod 32. The connecting shaft 33 is rotatably connected to the corresponding lever 42. After the sliding frame 41 slides on the mounting block 4 and separates from the lever 42, the lever 42 is no longer restricted. The lever 42 can then be manually rotated upwards. The sliding frame 41 is stabilized at the end of the mounting block 4, and the bottom wall of the lever 42 abuts against the sliding frame 41. The position of the lever 42 is supported by the restriction of the sliding frame 41. As the lever 42 rotates, it drives the spline shaft 43, which in turn drives the transmission frame 31 to rotate. As the transmission frame 31 rotates, it causes the limiting block 3 to tilt upward. The limiting block 3 is tilted at a certain angle, eliminating the need for workers to put their hands into the device. After the fins are inserted, the space inside the device is occupied. With the limiting block 3 tilted upward, the side wall of the fins in contact with the limiting block 3 is partially exposed. This eliminates the need for workers to put their hands into the device to adjust the position of the fins, thus improving the portability of fin position adjustment. Furthermore, it eliminates the need for adjustment in the internal area of ​​the device, avoiding fin deformation caused by excessive force in a confined area, which would otherwise waste fins and reduce work efficiency.

[0030] A fixed block 36 is fixedly connected to the corresponding lever 42. A limit rod 34 is slidably connected to the fixed block 36. A spring 35 is sleeved on the limit rod 34. The ends of the spring 35 are fixedly connected to the limit rod 34 and the fixed block 36 respectively. The limit rod 34 is engaged with the connecting shaft 33. When the limit rod 34 is pulled outward manually, the limit rod 34 is separated from the connecting shaft 33. When the connecting rod 32 at the end is rotated manually, the connecting rod 32 at the end tilts and pushes the next connecting rod 32, thus realizing the transmission between the connecting rods 32. Due to the transmission principle between the connecting rods 32, the corresponding transmission frame 31 is driven. The transmission frame 31 drives the limit block 3 to move. The distance between each limit block 3 during and after movement is always the same, thus controlling the movement of the limit block 3. The spacing between the limit blocks 3 is adjusted uniformly and synchronously. Under the premise that the spacing between the limit blocks 3 is adjustable, the steps required for adjustment are reduced and the spacing between the limit blocks 3 is expanded. This avoids the situation where the spacing between the limit blocks 3 is too small. When inserting the fins after inserting the fins, the small spacing between the fins will affect the insertion of the fins. After the adjustment is completed, the force on the spring 35 is released. As the spring 35 moves, it compresses the fixing block 36, which deforms and applies the deformation force to the spring 35. The spring 35 is pushed to engage with the connecting shaft 33 again, thereby restricting the position of the connecting shaft 33 and interlocking the position of the connecting rod 32 to ensure the stability of the connecting rod 32 after the position adjustment.

[0031] The end of the connecting shaft 33 has a polygonal groove, and the end of the limiting rod 34 is polygonal. The connecting shaft 33 is locked by the polygonal fit between the connecting shaft 33 and the limiting rod 34, and the limiting rod 34 slides linearly with the fixing block 36 and cannot rotate.

[0032] The base 1 has an installation position, and a lead screw 23 is rotatably connected to the base 1. The movable frame 2 is threadedly connected to the lead screw 23. The movable frame 2 has a parallel sliding groove, and multiple limiting plates 21 are arranged in an array inside the movable frame 2. Each limiting plate 21 is slidably connected to the movable frame 2, and each limiting plate 21 is symmetrically provided with a fastening bolt 22. Each fastening bolt 22 is locked to the limiting plate 21 by threads. Before the fins are inserted, each fastening bolt 22 is loosened, and the limiting plates 21 are sequentially connected to the limiting plate 21. With the corresponding limiting blocks 3 positioned relative to each other, first insert one end of the fin into the space between the limiting plates 21, then insert the other end of the fin into the corresponding position on the limiting block 3 until the fin is fully inserted, reducing the gap between the limiting blocks 3. Then, manually push the limiting plate 21 inward to maintain the gap between the fins, preventing the fins from being too close and affecting the subsequent use of the fins. After adjusting the position of the limiting plate 21, tighten the corresponding fastening bolts 22 to fix the position of the limiting plate 21.

[0033] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. An evaporator fin assembly automatic positioning device, characterized by, include: The positioning component is used to position the fins during assembly. The positioning component includes a base (1), a movable frame (2), a limiting block (3), a connecting rod (32), and a spline shaft (43). The movable frame (2) is movably connected to the base (1). The limiting blocks (3) are arranged in an array on the base (1). Multiple connecting rods (32) are connected by transmission, and the middle part of each connecting rod (32) is connected to the corresponding limiting block (3). The spline shaft (43) is rotatably connected to the side of the base (1), and the limiting block (3) is connected to the spline shaft (43) by transmission.

2. The automatic positioning device for evaporator fin assembly according to claim 1, characterized in that, The base (1) is symmetrically provided with mounting blocks (4), each mounting block (4) is fixedly connected to the base (1), the end of the spline shaft (43) is rotatably connected to the mounting block (4), and one end of the spline shaft (43) is fixedly connected to a lever (42).

3. The automatic positioning device for evaporator fin assembly according to claim 2, characterized in that, A sliding frame (41) is slidably connected to one end of the mounting block (4). The sliding frame (41) abuts against the lever (42). The connection between the lever (42) and the spline shaft (43) passes through the corresponding mounting block (4) and is rotatably connected to the mounting block (4).

4. The automatic positioning device for evaporator fin assembly according to claim 3, characterized in that, The ends of each of the connecting rods (32) are rotatably connected, and a transmission frame (31) is rotatably connected to the middle of each connecting rod (32). Each transmission frame (31) is slidably connected to a spline shaft (43), and a connecting shaft (33) is rotatably connected to the middle of one end of the connecting rod (32). The connecting shaft (33) is rotatably connected to the corresponding lever (42).

5. The automatic positioning device for evaporator fin assembly according to claim 4, characterized in that, A fixing block (36) is fixedly connected to the corresponding lever (42). A limiting rod (34) is slidably connected to the fixing block (36). A spring (35) is sleeved on the limiting rod (34). The ends of the spring (35) are fixedly connected to the limiting rod (34) and the fixing block (36) respectively. The limiting rod (34) is engaged with the connecting shaft (33).

6. The automatic positioning device for evaporator fin assembly according to claim 1, characterized in that, The base (1) has an installation position, and a lead screw (23) is rotatably connected to the base (1). The movable frame (2) is threadedly connected to the lead screw (23), and a parallel sliding groove is provided on the movable frame (2).

7. The automatic positioning device for evaporator fin assembly according to claim 6, characterized in that, The movable frame (2) is provided with multiple limiting plates (21) arranged in an array, and each limiting plate (21) is slidably connected to the movable frame (2).

8. The automatic positioning device for evaporator fin assembly according to claim 7, characterized in that, Each of the limiting plates (21) is symmetrically provided with fastening bolts (22), and each fastening bolt (22) is locked to the limiting plate (21) by means of threads.

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