CN210679546U

CN210679546U - Air condition compressor cylinder body runner excision mould

Info

Publication number: CN210679546U
Application number: CN201921163976.5U
Authority: CN
Inventors: 杨朝晖; 王小满; 刘煜
Original assignee: Changsha Boda Science And Engineering Co Ltd
Current assignee: Changsha Boda Science And Engineering Co Ltd
Priority date: 2019-07-24
Filing date: 2019-07-24
Publication date: 2020-06-05
Anticipated expiration: 2029-07-24

Abstract

The utility model discloses an air condition compressor cylinder body runner excision mould, it includes the die body, the die body down, be located and be provided with guider and stop device between last die body and the lower die body, upward be provided with the cutter between die body and the lower die body, the cutter down, the embossing mold and support the mould, the air condition compressor cylinder body is located the embossing mold and is supported between the mould, go up the cutter and locate between first runner and the second runner with the cutter down, the top of embossing mold is provided with the spring, the bottom of going up the die body is provided with the stopper, the embossing mold sets up in the stopper, the spring sets up between the embossing mold and last die body, the top of embossing mold is provided with and is used for preventing from following the flange that deviates from in the stopper. The utility model replaces the traditional manual operation, can realize the automatic cutting of the double gates of the air condition compressor cylinder body in the mould, improves the production efficiency and meets the requirement of large-scale production; meanwhile, the notch can be prevented from being torn, the smoothness of sprue cutting is improved, and the phenomenon of multiple material cutting is prevented.

Description

Air condition compressor cylinder body runner excision mould

Technical Field

The invention relates to a cutting die for a cylinder sprue of an air conditioner compressor.

Background

The die-casting forming process mainly comprises 6 stages of die assembly, filling, cooling, die opening, demoulding and the like. These 6 stages directly determine the quality of the product being formed and these 6 stages are a complete continuous process.

And (3) filling stage:

filling is the first step in the overall die casting cycle, from the time the die is closed to start die casting until the die cavity is approximately 95% filled. Theoretically, the shorter the filling time, the higher the molding efficiency; however, in actual production, the molding time (or the die casting speed) is limited by many conditions.

And (4) high-speed filling. The shear rate is high during high-speed filling, and the viscosity of the plastic is reduced due to the shear thinning effect, so that the overall flow resistance is reduced; localized viscous heating effects also thin the thickness of the cured layer. Thus, in the flow control phase, the filling behavior tends to depend on the volume size to be filled. That is, during the flow control phase, the shear-thinning effect of the melt tends to be large due to the high-speed filling, while the cooling effect of the thin wall is not significant, so that the effect of the velocity dominates the upwind.

And (4) filling at a low speed. When the heat conduction controls low-speed filling, the shear rate is low, the local viscosity is high, and the flow resistance is high. Because the hot plastic is supplemented at a slow speed and flows slowly, the heat conduction effect is obvious, and the heat is rapidly taken away by the cold die wall. With a smaller amount of viscous heating, the solidified layer is thicker, which further increases the flow resistance where the wall is thinner.

Due to the fountain flow, the plastic polymer chains in front of the flow wave are aligned to the almost parallel flow front. Therefore, when the two plastic melt adhesives are intersected, the polymer chains of the contact surfaces are parallel to each other; in addition, the two strands of molten glue have different properties (different residence time in a die cavity, different temperature and pressure), so that the structural strength of a molten glue intersection area on a micro scale is poor. When the parts are placed at a proper angle under light and observed by naked eyes, the generation of obvious bonding lines can be found, and the mechanism is the formation mechanism of the welding marks. The weld marks not only affect the appearance of the plastic part, but also loose microstructure and easy to cause stress concentration, so that the strength of the part is reduced and the part is broken.

Generally, the weld mark strength at which welding occurs in a high temperature region is better. Because the mobility of the polymer chains is relatively good under the high-temperature condition, the polymer chains can penetrate and wind each other, and in addition, the temperatures of two melts in a high-temperature area are relatively close, the thermal properties of the melts are almost the same, and the strength of a welding area is increased; on the contrary, in the low temperature region, the welding strength is poor.

II, pressure maintaining stage:

the effect of the dwell phase is to continuously apply pressure to compact the melt and increase the density of the plastic (densification) to compensate for the shrinkage behaviour of the plastic. During the dwell process, the back pressure is high because the mold cavity is already filled with plastic. During the pressure-maintaining compaction process, the screw of the die-casting machine can only slightly move forward slowly, the flowing speed of the plastic is slow, and the flowing is called pressure-maintaining flowing. In the pressure maintaining stage, the cooling and solidification of the plastic mold wall is accelerated, and the viscosity of the melt is increased quickly, so that the resistance in the mold cavity is high. In the later stage of pressure maintaining, the material density is continuously increased, the plastic part is gradually formed, the pressure maintaining stage is continued until the sprue is solidified and sealed, and the pressure of the mold cavity in the pressure maintaining stage reaches the highest value.

During the dwell phase, the plastic exhibits partially compressible properties due to the relatively high pressure. In the area with higher pressure, the plastic is more compact and has higher density; in the lower pressure areas, the plastic is more porous and less dense, thus causing the density distribution to change with location and time. The plastic flow rate is extremely low in the pressure maintaining process, and the flow does not play a leading role any more; pressure is a major factor affecting the pressure holding process. During the holding process, the plastic already fills the mold cavity, and the gradually solidified melt serves as a medium for transmitting pressure. The pressure in the mold cavity is transmitted to the mold wall surface by the plastic, and there is a tendency to open the mold, so that a proper mold clamping force is required for mold clamping. The mold expanding force slightly expands the mold under normal conditions, and the mold expanding force has an assisting effect on the exhaust of the mold; however, if the mold expansion force is too large, burrs and flashes of the molded product are easily caused, and even the mold is expanded. Therefore, when selecting a die casting machine, the die casting machine with a sufficiently large clamping force should be selected to prevent the die expansion phenomenon and to effectively maintain the pressure.

Under the new die-casting environmental conditions, some new die-casting processes need to be considered, such as gas-assisted forming, water-assisted forming, foaming die-casting and the like

And thirdly, cooling stage:

in the die casting mold, the design of the cooling system is very important. The reason is that the formed plastic product can not be deformed due to external force after being demoulded until the formed plastic product is cooled and solidified to certain rigidity. The cooling time accounts for about 70% -80% of the whole forming period, so that the well designed cooling system can greatly shorten the forming time, improve the die casting production rate and reduce the cost. An improperly designed cooling system can prolong the forming time and increase the cost; uneven cooling further causes warpage of the plastic article.

According to the experiment, the heat entering the mould from the melt is dissipated mainly in two parts, one of which is 5% transferred to the atmosphere by radiation and convection, the remaining 95% being transferred from the melt to the mould. The plastic product is in the mould, and due to the action of the cooling water pipe, heat is transferred to the cooling water pipe from the plastic in the mould cavity through the mould frame through heat conduction, and then is taken away by cooling liquid through heat convection. A small amount of heat which is not taken away by the cooling water is continuously conducted in the mold and is scattered in the air after contacting the outside.

The molding cycle of the die-casting molding is composed of mold closing time, filling time, pressure maintaining time, cooling time and demolding time. Wherein the proportion of the cooling time is the largest, and is about 70-80%. Therefore, the cooling time directly affects the molding cycle length and the yield of the plastic products. The temperature of the plastic product in the demolding stage should be cooled to be lower than the thermal deformation temperature of the plastic product so as to prevent the plastic product from being warped and deformed due to the relaxation phenomenon caused by residual stress or the external force of demolding.

Factors that affect the rate of cooling of the article are:

plastic product design. Mainly the wall thickness of the plastic product. The greater the thickness of the article, the longer the cooling time. Generally, the cooling time is proportional to the square of the thickness of the plastic or 1.6 times the maximum flow channel diameter. I.e. the plastic article is doubled in thickness and the cooling time is increased by a factor of 4.

The material of the mould and the cooling method thereof. The cooling rate of the mold material, including the mold core, cavity material, and mold frame material, is greatly affected. The higher the thermal conductivity of the mold material, the better the effect of transferring heat from the plastic per unit time and the shorter the cooling time.

And a cooling water pipe configuration mode. The closer the cooling water pipe is to the die cavity, the larger the pipe diameter is, the more the number is, the better the cooling effect is, and the shorter the cooling time is.

The flow rate of the cooling liquid. The greater the cooling water flow (generally preferred to achieve turbulence), the better the cooling water will carry away heat by thermal convection.

The nature of the cooling fluid. The viscosity and heat transfer coefficient of the cooling fluid also affect the heat transfer efficiency of the mold. The lower the viscosity of the cooling liquid, the higher the heat transfer coefficient, and the lower the temperature, the better the cooling effect.

And (4) selecting plastic. Plastic refers to a measure of the rate at which plastic conducts heat from a hot place to a cold place. The higher the heat conduction coefficient of the plastic is, the better the heat conduction effect is, or the specific heat of the plastic is low, the temperature is easy to change, so that the heat is easy to dissipate, the heat conduction effect is better, and the required cooling time is shorter.

And setting processing parameters. The higher the material temperature, the higher the mold temperature, the lower the ejection temperature, and the longer the cooling time required.

Design rules of the cooling system:

the cooling channels are designed to ensure uniform and rapid cooling.

The cooling system is designed to maintain proper and efficient cooling of the mold. The cooling holes should be of standard size for ease of machining and assembly.

When designing a cooling system, the mold designer must determine the following design parameters-the location and size of the cooling holes, the length of the holes, the type of holes, the arrangement and connection of the holes, and the flow rate and heat transfer properties of the cooling fluid-based on the wall thickness and volume of the plastic part.

Fourthly, demolding:

demolding is the last step in a die-casting cycle. Although the product is formed by cold setting, demoulding still has important influence on the quality of the product, and improper demoulding mode can cause the defects of uneven stress of the product during demoulding, deformation of the product during ejection and the like. The demolding mode mainly comprises two modes: ejector pin drawing of patterns and stripper plate drawing of patterns. When the mold is designed, a proper demolding mode is selected according to the structural characteristics of the product so as to ensure the product quality.

For the mold adopting the ejector rods for demolding, the ejector rods are arranged uniformly as much as possible, and the positions of the ejector rods are selected to be the places with the largest demolding resistance and the largest strength and rigidity of the plastic part so as to prevent the plastic part from deforming and damaging.

The demoulding plate is generally used for demoulding a deep-cavity thin-wall container and a transparent product which is not allowed to have push rod traces, and the mechanism has the characteristics of large and uniform demoulding force, stable movement and no obvious trace left.

The die-casting pressure, the die-casting time, the die-casting temperature, the pressure maintaining pressure and time, and the back pressure are very important to the quality of the die-casting piece.

1. Die casting pressure:

the die casting pressure is provided by a hydraulic system of the die casting system. The pressure of the hydraulic cylinder is transmitted to the plastic melt through a screw of the die casting machine, the plastic melt enters a vertical runner (a main runner for partial dies) of the die, a main runner and a branch runner through a nozzle of the die casting machine under the pushing of the pressure, and enters a die cavity through a pouring gate, and the process is a die casting process or a filling process. The pressure is present to overcome the resistance of the melt during flow or, conversely, the resistance of the flow needs to be offset by the pressure of the die casting machine to ensure that the filling process is successful.

During die casting, the pressure at the die casting machine nozzle is highest to overcome the flow resistance of the melt throughout the entire process. Thereafter, the pressure is gradually reduced along the flow length toward the front of the melt front, which is the atmospheric pressure if the cavity interior is vented well.

There are many factors that affect melt fill pressure, and there are 3 categories in summary: (1) material factors such as type of plastic, viscosity, etc.; (2) structural factors such as the type, number and location of the gating system, the shape of the cavity of the mold, and the thickness of the product; (3) and (4) forming process elements.

2. Die casting time:

the die casting time is the time required for the plastic melt to fill the cavity, and does not include the auxiliary time for opening and closing the die. Although the die-casting time is short and has little influence on the molding cycle, the adjustment of the die-casting time has great effect on the pressure control of a sprue, a runner and a cavity. Reasonable die casting times facilitate the desired filling of the melt and are of great importance for improving the surface quality of the product and for reducing dimensional tolerances.

The die-casting time is far shorter than the cooling time, and is about 1/10-1/15 of the cooling time, and the rule can be used as a basis for predicting the whole forming time of the plastic part. When the die flow analysis is carried out, the die casting time in the analysis result is equal to the die casting time set in the process condition only under the condition that the melt is completely pushed by the rotation of the screw to fill the die cavity. If the holding pressure switching of the screw occurs before the cavity is filled, the analysis result will be greater than the setting of the process conditions.

3. Die casting temperature:

the die casting temperature is an important factor affecting the die casting pressure. The charging barrel of the die casting machine has 5-6 heating sections, and each raw material has a proper processing temperature (the detailed processing temperature can be referred to data provided by a material supplier). The die casting temperature must be controlled within a certain range. The temperature is too low, the melt plastication is poor, the quality of a formed part is influenced, and the process difficulty is increased; the temperature is too high and the raw material is easily decomposed. In the actual die-casting process, the die-casting temperature is often higher than the barrel temperature, and the higher value is related to the die-casting speed and the material performance, and can reach 30 ℃ at most. This is due to the high heat generated by the shear experienced by the melt as it passes through the sprue. This difference can be compensated for in the mold flow analysis by trying to measure the temperature of the molten material as it is being cast empty and by including the nozzle in the modeling.

4. Pressure and time for pressure holding:

near the end of the die casting process, the screw stops rotating and only advances forward, at which point the die casting enters a dwell phase. And continuously feeding materials to the cavity by a nozzle of the die casting machine in the pressure maintaining process to fill the volume vacated by the shrinkage of the workpiece. If the mold cavity is not kept pressure after being filled, the product shrinks by about 25% in a large scale, and particularly, shrinkage marks are formed at the ribs due to excessive shrinkage. The holding pressure is generally about 85% of the maximum filling pressure, and is determined according to actual conditions.

5. Back pressure:

the back pressure refers to the pressure which needs to be overcome when the screw rotates reversely and retreats for storing materials. The use of high back pressure facilitates dispersion of the colorant and melting of the plastic, but at the same time extends the screw retraction time, reduces the length of the plastic fibers, and increases the pressure of the die casting machine, so that the back pressure should be lower, typically not more than 20% of the die casting pressure. When the foam is die cast, the back pressure should be higher than the pressure created by the gas, otherwise the screw would be pushed out of the barrel. Some die casting machines can program the back pressure to compensate for the reduction in screw length during melting, which reduces the heat input and lowers the temperature. However, since the result of such a change is difficult to estimate, it is not easy to make a corresponding adjustment to the machine.

The pouring gate of the die-casting die is a section of passage from the runner to the die cavity and is the part with the smallest section and the shortest section in the pouring system. The location, number, shape and size of the gates have a direct impact on the quality of the plastic article and the appearance of the product.

The removal of pressure casting runner adopts and to accomplish through the mode of artifical shearing mostly among the prior art, and this has increased artificial amount of labour, and production efficiency is low, and the shearing mouth is inconsistent moreover, and the rejection rate is high, and the quality of product does not guarantee.

For example: the cutting of the gate of the windscreen wiper is usually completed manually, and the manual cutting of the gate has the problems of high labor intensity, low production efficiency and the like, and cannot meet the requirement of large-scale production.

At present, the cutting of the die casting pouring gate is mostly finished by a manual shearing mode, so that the manual labor amount is increased, the production efficiency is low, the shearing mouths are inconsistent, the rejection rate is high, and the quality of products is not guaranteed.

For example: when the air conditioner compressor cylinder body 1 is processed, in order to improve the pouring effect, a first pouring gate 2 and a second pouring gate 3 (shown in fig. 3) are respectively arranged at a part a 101 and a part B102 of the air conditioner compressor cylinder body, at present, the first pouring gate 3 and the second pouring gate 2 are usually cut off manually, and the manual cutting of the pouring gates has the problems of high labor intensity, low production efficiency and the like, and the requirement of large-scale production cannot be met.

Disclosure of Invention

The invention aims to solve the problems, provides the air-conditioner compressor cylinder body sprue cutting die, replaces the traditional manual operation, can realize the automatic cutting of the double sprue of the air-conditioner compressor cylinder body in the die, improves the production efficiency, and meets the requirement of large-scale production; meanwhile, the notch can be prevented from being torn, the smoothness of sprue cutting is improved, and the phenomenon of multiple material cutting is prevented.

In order to realize the purpose, the invention adopts the technical scheme that: it includes the die body, down the die body, be located and be provided with guider and stop device between last die body and lower die body, upward be provided with the cutter between die body and the lower die body, the lower cutter, the embossing mold and support the mould, the air condition compressor cylinder body is located the embossing mold and is supported between the mould, go up the cutter and locate between first runner and the second runner with lower cutter, the top of embossing mold is provided with the spring, the bottom of going up the die body is provided with the stopper, the embossing mold sets up in the stopper, the spring setting is at the embossing mold and last between the die body.

When the upper die body and the lower die body move relatively, the pressing die drives the air conditioner compressor cylinder body to move downwards, and the upper cutter and the lower cutter move relatively to cut off the first pouring gate and the second pouring gate.

Furthermore, the guiding device comprises a guiding sleeve and a guiding shaft which are matched with each other, and the guiding sleeve and the guiding shaft are respectively fixed on the upper die body and the lower die body.

Further, stop device is including mutually supporting use last stop lever and lower stop lever, goes up stop lever and lower stop lever and do not fix on last die body and lower die body, goes up the coaxial alternate setting between stop lever and the lower stop lever.

Furthermore, a sprue gate supporting piece is arranged at the top of the lower die body.

Furthermore, the pressing die is of a circular structure, and the inner side surface of the limiting block is provided with an arc limiting surface matched with the pressing die.

Further, the top of the pressing module is provided with a flange for preventing the pressing module from being separated from the limiting block.

The invention has the beneficial effects that: the invention provides an air-conditioner compressor cylinder body sprue cutting die which replaces the traditional manual operation, can realize the automatic cutting of double sprues of an air-conditioner compressor cylinder body in a die, improves the production efficiency and meets the requirement of large-scale production.

1. When the upper cutter and the lower cutter move relatively, the position of the cylinder body of the air-conditioning compressor is kept unchanged, and the upper cutter and the lower cutter cut the first sprue and the second sprue quickly, so that the incisions are prevented from being torn, the sprue cutting smoothness is improved, and the phenomenon of multiple material cutting is prevented.

2. When the air compressor cylinder body pouring gate is cut off, the cutting speed is high, the cutting is crisp and falls off, and the cut is smooth and has no sawtooth.

3. A guide device and a limiting device are arranged between the upper die body and the lower die body, the guide device realizes the precision of the relative motion of the upper die body and the lower die body, and the precise cutting can be completed; the limiting device can realize accurate control of the lower stroke, and perfect cutting of the pouring gate is realized.

Drawings

FIG. 1 is a schematic perspective view of the present invention with a gate cut.

Fig. 2 is a schematic cross-sectional structure of the present invention.

Fig. 3 is a schematic structural diagram of the air conditioner compressor cylinder body, the first gate and the second gate.

The text labels in the figures are represented as: 1. a cylinder body of an air-conditioning compressor; 2. a first gate; 3. a second gate; 4. a lower die body; 5. a guide shaft; 6. supporting the mold; 7. a lower limit lever; 8. an upper limiting rod; 9. feeding a mold body; 10. pressing a die; 11. a guide sleeve; 12. an upper cutter; 13. a lower cutter; 14. a spring; 15. a limiting block; 16. a sprue gate support.

Detailed Description

The following detailed description of the present invention is given for the purpose of better understanding technical solutions of the present invention by those skilled in the art, and the present description is only exemplary and explanatory and should not be construed as limiting the scope of the present invention in any way.

Example 1: the concrete structure of the invention is as follows: the air conditioner compressor cylinder body 1 is arranged between the pressing die 10 and the supporting die 6, the upper cutter 12 and the lower cutter 13 are arranged between the first pouring gate 2 and the second pouring gate 3, the top of the pressing die 10 is provided with a spring 14, the bottom of the upper die body 9 is provided with a limiting block 15, the pressing die 10 is arranged in the limiting block 15, and the spring 14 is arranged between the pressing die 10 and the upper die body 9; when the upper mold body and the lower mold body move relatively, the pressing mold 10 drives the air conditioner compressor cylinder body 1 to move downwards, the upper cutter 12 and the lower cutter 13 move relatively, and the first sprue 2 and the second sprue 3 are cut off. When the upper cutter 12 and the lower cutter 13 cut off the cylinder pouring gate of the air compressor, the lower cutter has the advantages of high speed, crisp and drop, flat and flat notch without sawteeth and the like, and can prevent the pouring gate from being torn.

Example 2: the concrete structure of the invention is as follows: the air conditioner compressor cylinder body 1 is arranged between the pressing die 10 and the supporting die 6, the upper cutter 12 and the lower cutter 13 are arranged between the first pouring gate 2 and the second pouring gate 3, the top of the pressing die 10 is provided with a spring 14, the bottom of the upper die body 9 is provided with a limiting block 15, the pressing die 10 is arranged in the limiting block 15, and the spring 14 is arranged between the pressing die 10 and the upper die body 9; when the upper mold body and the lower mold body move relatively, the pressing mold 10 drives the air conditioner compressor cylinder body 1 to move downwards, the upper cutter 12 and the lower cutter 13 move relatively, and the first sprue 2 and the second sprue 3 are cut off. When the upper cutter 12 and the lower cutter 13 cut off the cylinder pouring gate of the air compressor, the lower cutter has the advantages of high speed, crisp and drop, flat and flat notch without sawteeth and the like, and can prevent the pouring gate from being torn.

Preferably, the guiding device comprises a guiding sleeve 11 and a guiding shaft 5 which are matched with each other, and the guiding sleeve 11 and the guiding shaft 5 are respectively fixed on the upper die body 9 and the lower die body 4.

Example 3: the concrete structure of the invention is as follows: it includes the die body 9, the die body 4 down, it is provided with guider and stop device to be located between last die body 9 and the die body 4 down, it is provided with cutter 12 to go up between die body 9 and the die body 4 down, lower cutter 13, the embossing mold 10 and support mould 6, air condition compressor cylinder body 1 locates between embossing mold 10 and the support mould 6, go up cutter 12 and lower cutter 13 and locate between first runner 2 and second runner 3, the top of embossing mold 10 is provided with spring 14, the bottom of going up the die body 9 is provided with stopper 15, the embossing mold 10 sets up in stopper 15, spring 14 activity sets up between embossing mold 10 and last die body 9.

When the upper mold body and the lower mold body move relatively, the pressing mold 10 drives the air conditioner compressor cylinder body 1 to move downwards, the upper cutter 12 and the lower cutter 13 move relatively, and the first sprue 2 and the second sprue 3 are cut off. When the upper cutter 12 and the lower cutter 13 cut off the cylinder pouring gate of the air compressor, the lower cutter has the advantages of high speed, crisp and drop, flat and flat notch without sawteeth and the like, and can prevent the pouring gate from being torn.

Preferably, stop device uses including mutually supporting and goes up spacing pole 8 and spacing pole 7 down, goes up spacing pole 8 and spacing pole 7 down and fixes respectively on last die body 9 and lower die body 4, goes up for coaxial alternate setting between spacing pole 8 and the spacing pole 7 down.

The guide device realizes the precision of the relative motion of the upper die body and the lower die body, and can finish the precise cutting; the limiting device can realize accurate control of the lower stroke, and perfect cutting of the pouring gate is realized.

Preferably, the top of the pressing die is provided with a flange for preventing the pressing die from being removed from the stopper.

Example 4: the concrete structure of the invention is as follows: it includes the die body 9, the die body 4 down, it is provided with guider and stop device to be located between last die body 9 and the die body 4 down, it is provided with cutter 12 to go up between die body 9 and the die body 4 down, lower cutter 13, the embossing mold 10 and support mould 6, air condition compressor cylinder body 1 locates between embossing mold 10 and the support mould 6, go up cutter 12 and lower cutter 13 and locate between first runner 2 and second runner 3, the top of embossing mold 10 is provided with spring 14, the bottom of going up the die body 9 is provided with stopper 15, the embossing mold 10 sets up in stopper 15, spring 14 activity sets up between embossing mold 10 and last die body 9.

In order to make the pouring gate more stable when cutting off and ensure the tangent plane to be flat, the top of the lower die body 4 is provided with a pouring gate support piece 16.

Example 5: the concrete structure of the invention is as follows: it includes the die body 9, the die body 4 down, it is provided with guider and stop device to be located between last die body 9 and the die body 4 down, it is provided with cutter 12 to go up between die body 9 and the die body 4 down, lower cutter 13, the embossing mold 10 and support mould 6, air condition compressor cylinder body 1 locates between embossing mold 10 and the support mould 6, go up cutter 12 and lower cutter 13 and locate between first runner 2 and second runner 3, the top of embossing mold 10 is provided with spring 14, the bottom of going up the die body 9 is provided with stopper 15, the embossing mold 10 sets up in stopper 15, spring 14 activity sets up between embossing mold 10 and last die body 9.

Preferably, the pressing die 10 is of a circular structure, and the inner side surface of the limiting block 15 is provided with an arc limiting surface matched with the pressing die 10.

Example 6: the concrete structure of the invention is as follows: it includes the die body 9, the die body 4 down, it is provided with guider and stop device to be located between last die body 9 and the die body 4 down, it is provided with cutter 12 to go up between die body 9 and the die body 4 down, lower cutter 13, the embossing mold 10 and support mould 6, air condition compressor cylinder body 1 locates between embossing mold 10 and the support mould 6, go up cutter 12 and lower cutter 13 and locate between first runner 2 and second runner 3, the top of embossing mold 10 is provided with spring 14, the bottom of going up the die body 9 is provided with stopper 15, the embossing mold 10 sets up in stopper 15, spring 14 activity sets up between embossing mold 10 and last die body 9.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts of the present invention. The foregoing is only a preferred embodiment of the present invention, and it should be noted that there are objectively infinite specific structures due to the limited character expressions, and it will be apparent to those skilled in the art that a plurality of modifications, decorations or changes may be made without departing from the principle of the present invention, and the technical features described above may be combined in a suitable manner; such modifications, variations, combinations, or adaptations of the invention using its spirit and scope, as defined by the claims, may be directed to other uses and embodiments.

Claims

1. A cutting die for a cylinder sprue of an air conditioner compressor is characterized by comprising an upper die body (9), a lower die body (4), a guide device and a limiting device which are arranged between the upper die body (9) and the lower die body (4), an upper cutter (12) is arranged between the upper die body (9) and the lower die body (4), lower cutter (13), embossing mold (10) and support mould (6), air condition compressor cylinder body (1) is located between embossing mold (10) and support mould (6), go up between cutter (12) and lower cutter (13) and locate between first runner (2) and second runner (3), the top of embossing mold (10) is provided with spring (14), the bottom of going up mould (9) is provided with stopper (15), embossing mold (10) set up in stopper (15), spring (14) set up between embossing mold (10) and last mould (9).

2. The air condition compressor cylinder block sprue cutting die according to claim 1, wherein the guiding device comprises a guiding sleeve (11) and a guiding shaft (5) which are matched with each other, and the guiding sleeve (11) and the guiding shaft (5) are respectively fixed on the upper die body (9) and the lower die body (4).

3. The air condition compressor cylinder block sprue cutting die according to claim 1, wherein the limiting device comprises an upper limiting rod (8) and a lower limiting rod (7) which are matched with each other for use, the upper limiting rod (8) and the lower limiting rod (7) are respectively fixed on the upper die body (9) and the lower die body (4), and the upper limiting rod (8) and the lower limiting rod (7) are coaxially arranged at intervals.

4. The air condition compressor cylinder block gate cutting die according to any one of claims 1-3, characterized in that the top of the lower die body (4) is provided with a gate support (16).

5. The air condition compressor cylinder body sprue cutting die according to claim 4 is characterized in that the pressing die (10) is of a circular structure, and the inner side surface of the limiting block (15) is provided with a circular arc limiting surface matched with the pressing die (10).

6. The air condition compressor cylinder block sprue cutting die according to claim 5, wherein a flange (1001) for preventing the pressing die (10) from being removed from a limiting block (15) is arranged at the top of the pressing die.