Forming die for special-shaped limiting plate of exhaust valve of variable-frequency refrigerator compressor

Abstract

The forming die comprises an upper die assembly and a lower die assembly, and the upper die assembly comprises an upper cover plate, an upper die base, an upper die base plate, an upper clamping plate, a discharging base plate and a discharging plate which are sequentially arranged from top to bottom; the upper clamping plate is fixedly connected with a process hole punching male die, a first edge hole cutting male die, a first boss punching male die, a second boss punching male die, a second edge hole cutting male die, a third boss punching male die and a third edge hole cutting male die in sequence from left to right. A plurality of procedures such as process hole punching, primary side hole cutting, primary raising, secondary raising, secondary side hole cutting, third raising and third side hole cutting can be completed in the primary punching process, and the situation that a plurality of dies and devices need to be used and clamping needs to be conducted for multiple times in a traditional production mode is avoided; the number of carrying and positioning times of workpieces among different dies is reduced, errors caused by multiple times of positioning are reduced, the production process is simplified, and the production cycle is shortened.

Description

Technical Field

[0001] The invention relates to the technical field of moulds, and in particular to a forming mould for a special-shaped limiting plate of an exhaust valve of a variable frequency refrigerator compressor. Background Art

[0002] In the manufacturing of variable frequency refrigerator compressors, the exhaust valve special-shaped limit plate is a key component, and its quality and precision play a vital role in the performance of the compressor. In the traditional processing of variable frequency refrigerator compressor exhaust valve special-shaped limit plates, multiple sets of molds and multiple processes are usually used for production. This production method is complicated and requires frequent handling and clamping of workpieces between different molds and equipment, which not only wastes a lot of time and manpower, but also multiple clampings are prone to positioning errors, making it difficult to ensure processing accuracy and affecting the stability of product quality.

[0003] Based on the above situation, the present invention proposes a forming die for a special-shaped limit plate of an exhaust valve of a variable frequency refrigerator compressor, which can effectively solve the above problems. Summary of the invention

[0004] The present invention aims at the prior art, overcomes the above defects and provides a forming die for a special-shaped limit plate of an exhaust valve of a variable frequency refrigerator compressor.

[0005] The present invention is achieved through the following technical solutions:

[0006] A forming die for a special-shaped limit plate of an exhaust valve of a variable frequency refrigerator compressor, comprising an upper die assembly and a lower die assembly, wherein:

[0007] The upper die assembly comprises an upper cover plate, an upper die seat, an upper die pad, an upper clamping plate, a discharge pad and a discharge plate arranged in sequence from top to bottom; the upper clamping plate is fixedly connected with a punching hole punch, a first trimming hole punch, a first boss punch, a second boss punch, a second trimming hole punch, a third boss punch and a third trimming hole punch in sequence from left to right;

[0008] The lower die assembly includes a lower supporting plate, a lower pad, a lower die seat, a lower die pad and a concave die plate which are arranged in sequence from bottom to top; the concave die plate is fixedly connected with a punching hole die, a first trimming hole die, a first boss die, a second boss die, a second trimming hole die, a third boss die and a third trimming hole die from left to right; a push rod is connected below the second boss die, and a push rod spring is connected below the push rod.

[0009] According to the above technical solution, as a further preferred technical solution of the above technical solution, the unloading plate is connected with a guide needle for positioning the feeding distance of the steel strip.

[0010] According to the above technical solution, as a further preferred technical solution of the above technical solution, the front and rear sides of the lower mold pad are connected with a plurality of floating pins for placing the steel strip, and the top of the floating pin passes through the concave mold plate; the bottom of the floating pin is fixedly connected with a floating pin spring.

[0011] According to the above technical solution, as a further preferred technical solution of the above technical solution, a discharge spring is arranged between the upper die seat and the discharge pad, and the discharge plate and the discharge pad are movably connected to the upper die assembly through a discharge screw.

[0012] According to the above technical solution, as a further preferred technical solution of the above technical solution, the unloading pad is connected to the unloading plate by a plurality of unloading pad fixing screws.

[0013] According to the above technical solution, as a further preferred technical solution of the above technical solution, the four corners of the lower die base are respectively fixedly connected with outer guide pillars, and the four corners of the upper die base are respectively fixedly connected with outer guide sleeves that cooperate with the outer guide pillars.

[0014] According to the above technical solution, as a further preferred technical solution of the above technical solution, the four corners of the upper clamping plate are respectively fixedly connected with inner guide pillars, and the unloading plate and the concave mold plate are both fixedly connected with inner guide sleeves that cooperate with the inner guide pillars.

[0015] According to the above technical solution, as a further preferred technical solution of the above technical solution, the upper cover plate, the upper die seat, the upper die pad and the upper clamping plate are connected by a plurality of upper die fixing screws and upper die fixing pins.

[0016] According to the above technical solution, as a further preferred technical solution of the above technical solution, the lower die base, the lower die pad and the concave die plate are connected by a plurality of lower die fixing screws and lower die fixing pins.

[0017] According to the above technical solution, as a further preferred technical solution of the above technical solution, the upper and lower ends of the lower foot are fixedly connected to the lower mold base and the lower support plate by lower foot fixing screws respectively.

[0018] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0019] The present invention provides a forming die for a special-shaped limit plate of an exhaust valve of a variable frequency refrigerator compressor. By setting an upper die assembly and a lower die assembly, multiple processes such as punching a process hole, a primary trimming hole, a primary embossing, a secondary embossing, a secondary trimming hole, a tertiary embossing and a tertiary trimming hole can be completed in one stamping process, thereby avoiding the need to use multiple dies, multiple devices and multiple clamping in traditional production methods, reducing the number of times the workpiece is carried and positioned between different dies, reducing the errors caused by multiple positioning, simplifying the production process and shortening the production cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a perspective schematic diagram of the main viewing direction of the present invention;

[0022] Figure 3 It is a perspective schematic diagram of the present invention in a top view. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the technical solution of the present invention, the preferred implementation scheme of the present invention is described below in conjunction with specific embodiments. However, it should be understood that the drawings are only used for exemplary description and cannot be understood as a limitation on this patent. In order to better illustrate this embodiment, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted. The positional relationship described in the drawings is only for exemplary description and cannot be understood as a limitation on this patent.

[0024] A forming die for a special-shaped limit plate of an exhaust valve of a variable frequency refrigerator compressor, comprising an upper die assembly and a lower die assembly, wherein:

[0025] The upper die assembly comprises an upper cover plate 1, an upper die seat 2, an upper die pad 3, an upper clamping plate 4, a discharge pad 5 and a discharge plate 6 which are arranged in sequence from top to bottom; the upper clamping plate 4 is fixedly connected with a punching hole punch 7, a first trimming hole punch 8, a first boss punch 9, a second boss punch 10, a second trimming hole punch 11, a third boss punch 12 and a third trimming hole punch 13 in sequence from left to right;

[0026] The lower die assembly includes a lower support plate 14, a lower pad 15, a lower die base 16, a lower die pad 17 and a concave die plate 18 which are arranged in sequence from bottom to top; the concave die plate 18 is fixedly connected with a punching hole die 19, a first trimming hole die 20, a first boss die 21, a second boss die 22, a second trimming hole die 23, a third boss die 24 and a third trimming hole die 25 in sequence from left to right; a push rod 26 is connected below the second boss die 22, and a push rod spring 27 is connected below the push rod 26.

[0027] The present invention, by providing an upper die assembly and a lower die assembly, can complete multiple processes such as punching process holes, primary trimming holes, primary embossing, secondary embossing, secondary trimming holes, tertiary embossing and tertiary trimming holes in one stamping process, thereby avoiding the need to use multiple dies, multiple devices and multiple clamping in traditional production methods, reducing the number of times the workpiece is carried and positioned between different dies, reducing errors caused by multiple positioning, simplifying the production process and shortening the production cycle.

[0028] The present invention, by arranging an upper die assembly and a lower die assembly, can complete multiple processes such as punching process holes, pre-cutting the shape, three consecutive convex forming middle bosses, one blank step, punching the middle hole of the boss, drawing the hole, two blank steps, punching the product shape, punching four side holes, leveling, three blank steps, cutting and blanking in one stamping process, thereby avoiding the need to use multiple molds, multiple equipments and multiple clamping in traditional production methods, reducing the number of times the workpiece is carried and positioned between different molds, reducing the errors caused by multiple positioning, simplifying the production process and shortening the production cycle.

[0029] Furthermore, in another embodiment, the stripping plate 6 is connected with a guide pin 29 for positioning the feeding distance of the steel strip 28 .

[0030] By setting the guide pin 29, it is possible to ensure that the position of the steel strip is accurately fed in the mold each time, thereby ensuring the precision of the stamping process and the stability of the product quality, and avoiding processing errors and defective products caused by deviations in the feeding position of the steel strip.

[0031] Furthermore, in another embodiment, a plurality of floating pins 30 for placing the steel strip 28 are connected to the front and rear sides of the lower mold pad 17, and the top of the floating pin 30 passes through the concave mold plate 18; the bottom of the floating pin 30 is fixedly connected with a floating pin spring 31.

[0032] By providing a floating pin 30 and a floating pin spring 31, the steel strip 28 can be kept in a certain suspended state under the action of the floating pin 30 during the stamping process. This can avoid friction damage to the steel strip 28 due to direct contact with the concave template 18 during the stamping process. At the same time, it is convenient for the steel strip 28 to be unloaded smoothly after stamping, thereby improving production efficiency and product surface quality.

[0033] Furthermore, in another embodiment, a discharge spring 32 is provided between the upper die base 2 and the discharge pad 5 , and the discharge plate 6 and the discharge pad 5 are movably connected to the upper die assembly via a discharge screw 33 .

[0034] By setting the unloading spring 32 and the unloading screw 33, the unloading plate 6 and the unloading pad 5 can apply a certain elastic force to the stamped steel strip 28 under the action of the unloading spring 46 during the stamping process, so as to facilitate the stripping of the stamped steel strip 28 from the punch, realize the unloading function, ensure the continuity of the stamping process, and improve production efficiency.

[0035] Furthermore, in another embodiment, the unloading pad 5 is connected to the unloading plate 6 by a plurality of unloading pad fixing screws 34 .

[0036] At the same time, the connection stability between the unloading pad 5 and the unloading plate 6 is increased by the unloading pad fixing screws 34.

[0037] Furthermore, in another embodiment, the four corners of the lower die base 16 are respectively fixedly connected with outer guide pillars 35 , and the four corners of the upper die base 2 are respectively fixedly connected with outer guide sleeves 36 that cooperate with the outer guide pillars 35 .

[0038] By setting the cooperation of the outer guide pin 35 and the outer guide sleeve 36, precise guidance is provided for the closing process of the upper mold assembly and the lower mold assembly, ensuring that the upper and lower molds can be accurately aligned during the stamping process, avoiding misalignment of the mold during stamping, and improving the stamping accuracy and the service life of the mold.

[0039] Furthermore, in another embodiment, the four corners of the upper clamping plate 4 are respectively fixedly connected with inner guide pillars 37 , and the unloading plate 6 and the concave mold plate 18 are both fixedly connected with inner guide sleeves 38 that cooperate with the inner guide pillars 37 .

[0040] By providing the inner guide pin 37 and the inner guide sleeve 38, the guiding accuracy between the internal components of the mold is enhanced, especially during the relative movement between the stripper plate 6 and the concave mold plate 18, the movement accuracy and stability of the stripper plate 6 and the concave mold plate 18 are guaranteed, thereby improving the reliability of the stamping process and the product quality.

[0041] Furthermore, in another embodiment, the upper cover plate 1 , the upper die base 2 , the upper die pad 3 and the upper clamping plate 4 are connected by a plurality of upper die fixing screws 39 and upper die fixing pins 40 .

[0042] By providing the upper die fixing screws 39 and the upper die fixing pins 40, it is possible to ensure that the connection between the various components of the upper die assembly is firm and reliable, and no loosening or displacement occurs during the stamping process, thereby ensuring the stability of the die and the accuracy of the stamping process.

[0043] Furthermore, in another embodiment, the lower die base 16 , the lower die pad 17 and the concave die plate 18 are connected by a plurality of lower die fixing screws 41 and lower die fixing pins 42 .

[0044] By providing the lower die fixing screws 55 and the lower die fixing pins 56, it is possible to ensure that the connection between the various components of the lower die assembly is firm and reliable, and no loosening or displacement occurs during the stamping process, thereby ensuring the stability of the die and the accuracy of the stamping process.

[0045] Furthermore, in another embodiment, the upper and lower ends of the lower foot 15 are fixedly connected to the lower die base 16 and the lower supporting plate 14 through lower foot fixing screws 43 respectively.

[0046] By setting the lower foot fixing screws 43, the stability of the support of the lower foot 15 on the lower die base 16 is ensured, so that the lower die base 16 can be firmly installed on the lower support plate 14, providing a stable foundation for the entire mold, which helps to improve the stability and reliability of the mold during the stamping process.

[0047] The working principle of one embodiment of the present invention is as follows:

[0048] First, the steel strip 28 is placed on the floating pins 30 on the front and rear sides of the lower die pad 17 of the lower die assembly, and the floating pin spring 31 at the bottom of the floating pin 30 is in a natural state to provide support for the steel strip 28. The guide pin 29 on the unloading plate 6 is used to position the feeding distance of the steel strip 28 later.

[0049] The press drives the upper die assembly to move downward. During this process, the outer guide pins 35 at the four corners of the lower die base 16 cooperate with the outer guide sleeves 36 at the four corners of the upper die base 2, and the inner guide pins 37 at the four corners of the upper clamping plate 4 cooperate with the inner guide sleeves 38 on the stripper plate 6 and the concave die plate 18. These two sets of guide structures work together to ensure that the upper die assembly and the lower die assembly are accurately aligned to achieve high-precision mold closing. As the upper die assembly continues to descend, the stripper plate 6 first contacts the steel strip 28, and under the pressure of the stripper spring 32, the steel strip 28 is pressed tightly against the concave die plate 18, so that the steel strip 28 remains stable during the processing process.

[0050] At this point the stamping process begins:

[0051] Punching process hole step: Under the interaction between the punching punch 7 and the punching die 19, the punch 7 punches a process hole on the steel strip 28 to facilitate the insertion of the guide pin 29 on the unloading plate 5 to position the steel strip 28.

[0052] The first trimming hole processing step: the first trimming hole punch 8 and the first trimming hole die 20 cooperate closely to cut the steel strip 28, process two special-shaped trimming holes on the steel strip 28, remove the excess part of the steel strip 28, and make the edge shape of the product meet the design requirements.

[0053] First bossing process: The first bossing punch 9 cooperates with the first bossing die 21 to punch the first boss at a designated position of the steel strip 28 .

[0054] Second embossing process: The second embossing punch 10 cooperates with the second embossing die 22 to punch a second embossing on the steel strip 28. At this time, the ejector pin 26 and the ejector pin spring 27 connected below the second embossing die 22 play a role, transmitting the elastic force of the ejector pin spring 27 to the second embossing die 22, thereby increasing the embossing effect at this location.

[0055] Second trimming hole processing step: The second trimming hole punch 11 cooperates with the second trimming hole die 23 to perform a second trimming hole processing on the steel strip 28 to further trim the shape of the steel strip 28.

[0056] The third bossing process: The third bossing punch 12 and the third bossing die 24 cooperate to punch a third boss on the steel strip 28 to meet the structural design requirements of the product.

[0057] The third trimming hole processing step: the third trimming hole punch 13 cooperates with the third trimming hole die 25 to complete the third trimming hole processing, and the processed special-shaped limiting plate is cut off and separated from the steel belt 28.

[0058] After the forming process is completed, the press drives the upper die assembly to move upward. The unloading spring 32 restores its elastic deformation, generates an upward elastic force, pushes the unloading plate 6 upward, and pushes the processed special-shaped limit plate out of the die to a certain height. At the same time, the floating pin 30 moves upward under the action of the floating pin spring 31, and pushes up the steel strip 28, which is convenient for the subsequent feeding of the steel strip 28. After that, the steel strip 28 is fed forward a certain distance through the external feeding device to prepare for the next stamping process, and the cycle is repeated to achieve continuous production of special-shaped limit plates.

[0059] According to the description and drawings of the present invention, a person skilled in the art can easily manufacture or use a variable frequency refrigerator compressor exhaust valve special-shaped limit plate forming mold of the present invention, and can produce the positive effects recorded in the present invention.

[0060] Unless otherwise specified, in the present invention, the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicating orientation or positional relationships are based on the orientation or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the orientation or positional relationship in the present invention are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood in conjunction with the drawings and according to specific circumstances.

[0061] Unless otherwise clearly specified and limited, in the present invention, the terms "disposed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0062] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification or equivalent change made to the above embodiment based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A forming die for a special-shaped limit plate of an exhaust valve of a variable frequency refrigerator compressor, characterized in that: It includes an upper mold assembly and a lower mold assembly, wherein: The upper die assembly comprises an upper cover plate, an upper die seat, an upper die pad, an upper clamping plate, a discharge pad and a discharge plate arranged in sequence from top to bottom; the upper clamping plate is fixedly connected with a punching hole punch, a first trimming hole punch, a first boss punch, a second boss punch, a second trimming hole punch, a third boss punch and a third trimming hole punch in sequence from left to right; The lower die assembly includes a lower supporting plate, a lower pad, a lower die seat, a lower die pad and a concave die plate which are arranged in sequence from bottom to top; the concave die plate is fixedly connected with a punching hole die, a first trimming hole die, a first boss die, a second boss die, a second trimming hole die, a third boss die and a third trimming hole die from left to right; a push rod is connected below the second boss die, and a push rod spring is connected below the push rod.

2. The forming die of the special-shaped limit plate of the exhaust valve of the variable frequency refrigerator compressor according to claim 1, characterized in that: The unloading plate is connected with a guide pin for positioning the feeding distance of the steel strip.

3. The forming die of the special-shaped limit plate of the exhaust valve of the variable frequency refrigerator compressor according to claim 2, characterized in that: A plurality of floating pins for placing steel strips are connected to both the front and rear sides of the lower die pad, and the top ends of the floating pins penetrate through the concave die plate; and the bottoms of the floating pins are fixedly connected with floating pin springs.

4. The forming die of the special-shaped limit plate of the exhaust valve of the variable frequency refrigerator compressor according to claim 1, characterized in that: A discharge spring is arranged between the upper die seat and the discharge pad, and the discharge plate and the discharge pad are movably connected to the upper die assembly through a discharge screw.

5. The forming die of the special-shaped limit plate of the exhaust valve of the variable frequency refrigerator compressor according to claim 1, characterized in that: The unloading pad is connected to the unloading plate by a plurality of unloading pad fixing screws.

6. The forming die of the special-shaped limit plate of the exhaust valve of the variable frequency refrigerator compressor according to claim 1, characterized in that: The four corners of the lower die seat are respectively fixedly connected with outer guide pillars, and the four corners of the upper die seat are respectively fixedly connected with outer guide sleeves that cooperate with the outer guide pillars.

7. The forming die of the special-shaped limit plate of the exhaust valve of the variable frequency refrigerator compressor according to claim 1, characterized in that: The four corners of the upper clamping plate are respectively fixedly connected with inner guide pillars, and the unloading plate and the concave mold plate are both fixedly connected with inner guide sleeves that cooperate with the inner guide pillars.

8. The forming die of the special-shaped limit plate of the exhaust valve of the variable frequency refrigerator compressor according to claim 1, characterized in that: The upper cover plate, the upper die seat, the upper die pad and the upper clamping plate are connected by a plurality of upper die fixing screws and upper die fixing pins.

9. The forming die of the special-shaped limit plate of the exhaust valve of the variable frequency refrigerator compressor according to claim 1, characterized in that: The lower die base, the lower die pad and the concave die plate are connected by a plurality of lower die fixing screws and lower die fixing pins.

10. The forming die of the special-shaped limit plate of the exhaust valve of the variable frequency refrigerator compressor according to claim 1, characterized in that: The upper and lower ends of the lower pad foot are fixedly connected to the lower die base and the lower supporting plate through lower pad foot fixing screws respectively.

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