CN118253689A - Die for top cover of air conditioner external unit - Google Patents

Abstract

The invention relates to the field of dies, and provides a die for an air conditioner outdoor unit top cover. The die for the top cover of the air conditioner external unit comprises a lower die, wherein a bearing table for bearing the top cover of the air conditioner external unit is arranged on the lower die, and a driving device is also arranged on the lower die; the upper die is connected with the driving device and is provided with a die cavity suitable for pressing the top cover of the air conditioner external unit, and the structural size of the die cavity is larger than that of the top cover of the air conditioner external unit so that the edge of the top cover of the air conditioner external unit is provided with partial discharge. According to the air conditioner external unit top cover, the upper die is arranged, and the die cavity with the structural size larger than that of the air conditioner external unit top cover is arranged on the upper die, so that when the upper die and the lower die are closed under the action of the driving device, partial discharge is formed between the die cavity and the edge of the air conditioner external unit top cover, uneven material flow at the edge of the air conditioner external unit top cover is avoided, the defect of stress concentration is avoided, the spraying-free process of the air conditioner external unit top cover is realized, the product cost of the air conditioner external unit top cover is reduced, and the environmental pollution caused by the spraying process is eliminated.

Description

Die for top cover of air conditioner external unit

Technical Field

The invention relates to the field of dies, and provides a die for an air conditioner outdoor unit top cover.

Background

At present, in the shaping air conditioner outer unit top cap outward appearance spare, because of the problem that the moulding material had flowing in the stretch forming process, consequently, in stretching process, four corner positions of air conditioner outer unit top cap appear the inhomogeneous condition of material flow easily, and this can lead to four corner positions of air conditioner outer unit top cap to produce defects such as stress gathering, can't realize exempting from spraying technology, need the product punching press to accomplish the back, carry out spraying again and handle, increased process cost and product rejection rate, lead to the product cost to rise, and cause environmental pollution easily.

Disclosure of Invention

The present invention is directed to solving at least one of the technical problems existing in the related art. Therefore, the invention provides the die for the top cover of the air conditioner external unit, which can avoid the problem of uneven material flow at the edge of the top cover of the air conditioner external unit and eliminate the pollution of the spraying process to the environment.

The invention provides a die for an air conditioner external unit top cover, which comprises:

the lower die is provided with a bearing table for bearing the top cover of the air conditioner external unit, and the lower die is also provided with a driving device;

And the upper die is connected with the driving device, and is provided with a die cavity suitable for pressing the top cover of the air conditioner external unit, and the structural size of the die cavity is larger than that of the top cover of the air conditioner external unit so as to form partial discharge on the edge of the top cover of the air conditioner external unit.

According to the air conditioner external unit top cover provided by the embodiment of the invention, the upper die and the pressing die cavity with the structural size larger than that of the air conditioner external unit top cover are arranged on the upper die, so that when the upper die and the lower die are matched under the action of the driving device, the partial discharge amount can be formed between the pressing die cavity and the edge of the air conditioner external unit top cover, the problem of uneven material flow at the edge of the air conditioner external unit top cover is further avoided, the defect of stress concentration is avoided, the spraying-free process of the air conditioner external unit top cover is realized, the cost of an air conditioner external unit top cover product is reduced, the pollution of the spraying process to the environment is eliminated, and the air conditioner external unit top cover is more green and environment-friendly.

According to one embodiment of the invention, the die cavity comprises two sets of first die plates and second die plates which are oppositely arranged, and a reverse angle plate is formed between the adjacent first die plates and the second die plates;

A first gap is formed between the first pressing die plate and the second pressing die plate and the side edge of the top cover of the air conditioner external unit respectively;

and a second gap is formed between the chamfer plate and the corner of the top cover of the air conditioner external unit.

According to one embodiment of the present invention, the first gap has a value ranging from 0.02 mm to 0.08 mm;

the value of the second gap ranges from 0.02 mm to 0.08 mm.

According to one embodiment of the invention, a stop block is formed on the edge of the lower die, and the stop block is suitable for abutting with the side edge of the air conditioner external unit top cover so as to enable the side edge of the air conditioner external unit top cover to form a folded edge.

According to one embodiment of the invention, a guide plate is arranged on one side of the lower die, facing the upper die, a guide surface is formed on the guide plate, and the guide surface gradually approaches to the center position of the lower die from the top of the guide plate to the bottom of the guide plate;

The stop block is arranged on one side of the guide plate, which faces the lower die.

According to one embodiment of the invention, the first end of the stop block gradually approaches the lower die from the guide plate to the direction away from the guide plate, and a bending gap is formed between the second end of the stop block and the guide plate.

According to one embodiment of the invention, at least one of the upper die and the lower die is provided with a limit post, and the upper die and the lower die are adapted to realize limit between the upper die and the lower die by the limit post.

According to one embodiment of the invention, at least one of the upper and lower dies is provided with a guiding post by which the upper and lower dies are adapted to be guided.

According to one embodiment of the invention, a concave cavity is formed on one side of the upper die facing the lower die, a protrusion corresponding to the concave cavity is formed on one side of the lower die facing the upper die, and the concave cavity and the protrusion are suitable for forming convex ribs on the top cover of the air conditioner external unit under the condition that the upper die and the lower die are matched.

According to one embodiment of the invention, the lower die is provided with a positioning structure suitable for positioning the top cover of the air conditioner external unit.

The above technical solutions in the embodiments of the present invention have at least one of the following technical effects:

According to the air conditioner external unit top cover provided by the embodiment of the invention, the upper die and the pressing die cavity with the structural size larger than that of the air conditioner external unit top cover are arranged on the upper die, so that when the upper die and the lower die are matched under the action of the driving device, the partial discharge amount can be formed between the pressing die cavity and the edge of the air conditioner external unit top cover, the problem of uneven material flow at the edge of the air conditioner external unit top cover is further avoided, the defect of stress concentration is avoided, the spraying-free process of the air conditioner external unit top cover is realized, the cost of an air conditioner external unit top cover product is reduced, the pollution of the spraying process to the environment is eliminated, and the air conditioner external unit top cover is more green and environment-friendly.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

In order to more clearly illustrate the invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic block diagram of a mold for an air conditioner outdoor unit top cover provided by an embodiment of the present invention;

FIG. 2 is a schematic block diagram of an upper die provided by an embodiment of the present invention;

fig. 3 is a partial enlarged view at a in fig. 1.

Reference numerals:

100. A lower die; 102. an upper die; 104. a first die plate; 106. a second die plate; 108. chamfering plates; 110. a stop block; 112. a guide plate; 114. a guide surface; 116. a guide post; 118. a cavity.

Detailed Description

Embodiments of the present invention are described in further detail below with reference to the accompanying drawings and examples. The following examples are illustrative of the invention but are not intended to limit the scope of the invention.

In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In describing embodiments of the present invention, it should be noted that, unless explicitly stated and limited otherwise, the terms "coupled," "coupled," and "connected" should be construed broadly, and may be either a fixed connection, a removable connection, or an integral connection, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in embodiments of the present invention will be understood in detail by those of ordinary skill in the art.

In embodiments of the invention, unless expressly specified and limited otherwise, a first feature "up" or "down" on a second feature may be that the first and second features are in direct contact, or that the first and second features are in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the embodiments of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

As shown in fig. 1 to 3, the present invention provides a mold for an air conditioner external unit top cover, comprising:

The lower die 100 is provided with a bearing table for bearing the top cover of the air conditioner external unit, and the lower die 100 is also provided with a driving device;

The upper die 102 is connected with the driving device, and the upper die 102 is formed with a die cavity suitable for pressing the top cover of the air conditioner external unit, and the structural size of the die cavity is larger than that of the top cover of the air conditioner external unit so that the edge of the top cover of the air conditioner external unit is formed with partial discharge.

According to the air conditioner external unit top cover provided by the embodiment of the invention, the upper die 102 and the die cavity with the structural size larger than the size of the air conditioner external unit top cover are arranged on the upper die 102, so that when the upper die 102 and the lower die 100 are matched under the action of the driving device, partial discharge can be formed between the die cavity and the edge of the air conditioner external unit top cover, the problem of uneven material flow at the edge of the air conditioner external unit top cover is further avoided, the defect of stress concentration is avoided, the spraying-free process of the air conditioner external unit top cover is realized, the product cost of the air conditioner external unit top cover is reduced, the pollution of the spraying process to the environment is eliminated, and the air conditioner external unit top cover is more environment-friendly.

With continued reference to fig. 1 to 3, the lower mold 100 is used for carrying an air conditioner outdoor unit top cover, and in order to achieve this, a carrying table for carrying an air conditioner outdoor unit top cover is formed on the lower mold 100, it will be appreciated that when the upper mold 102 and the lower mold 100 are closed, the upper mold 102 may be pressed against the carrying table to achieve forging and forming of the air conditioner outdoor unit top cover.

The lower die 100 is also provided with a driving device, the driving device is connected with the upper die 102 at the same time, along with the action of the driving device, the upper die 102 can be driven to move towards a direction approaching or away from the lower die 100, when the upper die 102 approaches the lower die 100, the forging and pressing of the top cover of the air conditioner external unit can be realized, and when the upper die 102 moves away from the lower die 100, the purpose of taking out the top cover of the air conditioner external unit after forging and pressing is finished can be realized, or the purpose of loading the top cover of the air conditioner external unit without forging and pressing can be realized.

In the embodiment of the invention, the driving device can be a hydraulic cylinder, an electric cylinder and the like.

According to one embodiment of the present invention, the lower mold 100 is provided with a positioning structure adapted to position the top cover of the air conditioner.

It can be understood that, in order to satisfy the installation location of the air conditioner external unit top cover and the lower die 100, the installation accuracy and efficiency of the air conditioner external unit top cover and the lower die 100 are improved, a positioning structure is arranged on the lower die 100, and when the air conditioner external unit top cover is arranged on the lower die 100, the positioning structure arranged on the lower die 100 can realize the accurate positioning of the air conditioner external unit top cover. For example, the positioning structure may be a plurality of positioning blocks formed on the lower die 100, or may be a plurality of positioning pins formed on the lower die 100, and correspondingly, positioning pieces adapted to the positioning blocks and the positioning pins may be formed on the top cover of the air conditioner. The positioning member formed on the top cover of the air conditioner external unit is required to satisfy the requirement that the appearance of the top cover of the air conditioner external unit is not affected.

According to one embodiment of the present invention, the edge of the lower mold 100 is formed with a stopper 110, and the stopper 110 is adapted to abut against the side edge of the air conditioner external unit top cover, so that the side edge of the air conditioner external unit top cover forms a folded edge.

As shown in fig. 3, in order to achieve the edge folding effect on the edge of the top cover of the air conditioner external unit, the edge of the top cover of the air conditioner external unit is prevented from having sharp burrs, a stop block 110 is further formed on the lower die 100, and when the upper die 102 and the lower die 100 are closed, the stop block 110 can abut against the edge of the top cover of the air conditioner external unit, so that the edge position of the top cover of the air conditioner external unit can be folded inwards to form a folded edge. Therefore, after the forging and pressing of the top cover of the air conditioner outer unit are finished, operators can directly buckle the position of the folded edge to carry the top cover of the air conditioner outer unit, the situation that the edges of the top cover of the air conditioner outer unit are scratched by the operators is avoided, and the safety of carrying the top cover of the air conditioner outer unit by the operators is improved.

According to one embodiment of the present invention, a guide plate 112 is disposed on a side of the lower die 100 facing the upper die 102, a guide surface 114 is formed on the guide plate 112, and the guide surface 114 gradually approaches to the center position of the lower die 100 from the top of the guide plate 112 to the bottom of the guide plate 112;

The stopper 110 is disposed at a side of the guide plate 112 facing the lower die 100.

Referring to fig. 3, in order to improve accuracy in clamping the lower mold 100 and the upper mold 102, a guide plate 112 is further provided on a side of the lower mold 100 facing the upper mold 102, and a guide surface 114 is further formed on a side of the guide plate 112 facing the upper mold 102. It will be appreciated that when the upper die 102 deflects during the approach of the upper die 102 to the lower die 100, the upper die 102 may abut against the guide surface 114 to align the upper die 102 with the lower die 100 for precise clamping.

To achieve this, as shown in fig. 3, the guide surface 114 gradually approaches the center position of the lower die 100 from the top of the guide plate 112 toward the bottom of the guide plate 112, and it is understood that the center position of the lower die 100 may be the left end of the lower die 100 as shown in fig. 3. In the embodiment of the present invention, the guide plates 112 are disposed around the lower mold 100, that is, the guide plates 112 are disposed at the positions corresponding to the upper mold 102 on the four sides of the lower mold 100, respectively, and the bottom of the guide surface 114 on each guide plate 112 is inclined toward the center position of the lower mold 100.

The above-mentioned stop 110 is disposed on the side of the guide plate 112 facing the lower die 100, and by this arrangement, when the upper die 102 approaches the lower die 100, the upper die 102 can press the top cover of the air conditioner, so that the edge of the top cover of the air conditioner contacts with the stop 110, and then the edge of the top cover of the air conditioner is stressed to form a folded edge by the abutting action between the stop 110 and the top cover of the air conditioner.

According to an embodiment of the present invention, the first end of the stopper 110 gradually approaches the lower die 100 from the guide plate 112 in a direction away from the guide plate 112, and a bending gap is formed between the second end of the stopper 110 and the guide plate 112.

Referring to fig. 3, in order to form an upwardly bent folded edge at an edge position of the top cover of the air conditioner external unit, a first end of the stopper 110 is inclined toward the direction of the lower die 100 from the guide plate 112, and a bending gap is formed between a second end of the stopper 110 and the guide plate 112. The reason why the first end of the stopper 110 is disposed to be inclined toward the lower die 100 is that if the first end of the stopper 110 is disposed to be inclined toward the upper die 102, a dead point is formed between the stopper 110 and the guide plate 112, and if the upper die 102 is disposed to be inclined toward the upper die 102, a wrinkle is easily formed at the edge of the air conditioner external cover instead of the overlapping structure during the process of forging the air conditioner external cover, so that the stopper 110 has a certain guiding effect on the edge of the air conditioner external cover.

The bending gap formed between the second end of the stopper 110 and the guide block enables the edge of the air conditioner external unit top cover to be guided by the bending gap after entering the bending gap so that the edge of the air conditioner external unit top cover forms a folded edge.

According to one embodiment of the present invention, at least one of the upper mold 102 and the lower mold 100 is provided with a guide post 116, and the upper mold 102 and the lower mold 100 are adapted to be guided by the guide post 116.

As described above, in order to achieve the guiding function of the upper die 102 and the lower die 100, a guide post 116 is further provided on at least one of the upper die 102 and the lower die 100. By arranging the guide posts 116, stable guide in the die assembly process of the upper die 102 and the lower die 100 can be realized, and further forging precision and accuracy of the upper die 102 in the forging and forming process of the top cover of the air conditioner external unit are ensured. For example, the guide posts 116 may be provided on the upper mold 102 and the lower mold 100, respectively, the upper mold 102 may be provided with guide inner posts, the lower mold 100 may be provided with guide outer posts, and the guide inner posts may be inserted into the guide outer posts, by which the guide action on the upper mold 102 and the lower mold 100 may be achieved by the guide of the guide outer posts and the guide inner posts when the upper mold 102 and the lower mold 100 are clamped.

According to one embodiment of the present invention, at least one of the upper die 102 and the lower die 100 is provided with a limiting post, and the upper die 102 and the lower die 100 are adapted to achieve limiting between the upper die 102 and the lower die 100 by the limiting post.

In order to prevent the over-positioning of the upper and lower molds 102 and 100 during the mold clamping process, a limit post is provided on at least one of the upper and lower molds 102 and 100, it is understood that the over-positioning of the upper and lower molds 102 and 100 can be prevented by the limit of the limit post after the upper and lower molds 102 and 100 are clamped in place. For example, a stopper post may be provided on the upper die 102, by which the over-positioning of the upper die 102 and the lower die 100 can be prevented by the stopper of the stopper post when the upper die 102 approaches the lower die 100. Alternatively, the stopper post may be provided on the lower die 100, and by this arrangement, the function of preventing the upper die 102 and the lower die 100 from being positioned excessively is also achieved. Or the limit posts can be arranged in the upper die 102 and the lower die 100 at the same time, and the function can be achieved. The limiting column can be a columnar bulge structure or other structures which can play a limiting role.

In the embodiment of the present invention, the upper die 102 is used for forging and pressing the top cover of the air conditioner external unit, and thus, in order to realize the forging and pressing function, a die cavity is formed on the upper die 102. The structural dimensions of the die cavity are greater than the dimensions of the edges of the air conditioner external unit top cover, i.e. a certain partial discharge is formed between the die cavity and the edges of the air conditioner external unit top cover.

According to one embodiment of the present invention, the die cavity includes two sets of first die plates 104 and second die plates 106 disposed opposite to each other, and a chamfer plate 108 is formed between the adjacent first die plates 104 and second die plates 106;

A first gap is formed between the first die plate 104 and the second die plate 106 and the side edge of the top cover of the air conditioner external unit respectively;

A second gap is formed between the chamfer plate 108 and the corner of the top cover of the air conditioner external unit.

In the embodiment of the present invention, the die cavity includes two sets of first die plates 104 and second die plates 106 disposed opposite to each other, and it is understood that the die cavity includes two first die plates 104 and two second die plates 106 disposed opposite to each other, that is, the two first die plates 104 and the two second die plates 106 enclose the die cavity.

A chamfer plate 108 is disposed between the first platen 104 and the second platen 106 disposed adjacently, and the chamfer plate 108 may be a round chamfer plate 108 or a square chamfer plate 108. By providing the chamfer 108 between the adjacently disposed first die plate 104 and second die plate 106, a die cavity with smooth corner transitions can be formed.

As described above, a certain partial discharge is formed between the die cavity and the air conditioner external unit top cover, that is, a first gap is formed between the first die plate 104 and the air conditioner external unit top cover, and a second gap is formed between the second die plate 106 and the air conditioner external unit top cover.

According to one embodiment of the present invention, the first gap has a value ranging from 0.02 mm to 0.08 mm; the value of the second gap ranges from 0.02 mm to 0.08 mm.

It is understood that in the embodiment of the present invention, the value range of the first gap may be other values, and similarly, the value range of the second gap may be other values. Of course, it should be noted that the first gap and the second gap should not be too large, so as to avoid that the die cavity can not forge and mold the top cover of the air conditioner external unit.

According to an embodiment of the present invention, a concave cavity 118 is formed on a side of the upper die 102 facing the lower die 100, a protrusion corresponding to the concave cavity 118 is formed on a side of the lower die 100 facing the upper die 102, and the concave cavity 118 and the protrusion are adapted to form a bead on the air conditioner external cover when the upper die 102 and the lower die 100 are clamped.

Referring to fig. 1, in the embodiment of the present invention, a cavity 118 is formed on an upper mold 102, a protrusion is provided on a lower mold 100 at a position corresponding to the cavity 118, and when the upper mold 102 and the lower mold 100 are closed, the cavity 118 and the protrusion are adapted to form a structural strength bead on an air conditioner external unit top cover for improving the air conditioner external unit top cover. Of course, in the embodiment of the present invention, the shapes of the concave cavity 118 and the convex are not particularly limited, as long as the purpose of improving the structural strength of the top cover of the air conditioner external unit can be satisfied.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. A mold for an air conditioner outdoor unit top cover, comprising:

The lower die (100) is provided with a bearing table for bearing the top cover of the air conditioner external unit, and the lower die (100) is also provided with a driving device;

The upper die (102) is connected with the driving device, the upper die (102) is provided with a die cavity suitable for pressing the top cover of the air conditioner external unit, and the structural size of the die cavity is larger than that of the top cover of the air conditioner external unit so that the edge of the top cover of the air conditioner external unit is provided with partial discharge.

2. The die for the top cover of the air conditioner external unit according to claim 1, wherein the die cavity comprises two sets of a first die plate (104) and a second die plate (106) which are oppositely arranged, and a reverse angle plate (108) is formed between the adjacent first die plate (104) and second die plate (106);

a first gap is formed between the first pressing die plate (104) and the second pressing die plate (106) and the side edge of the top cover of the air conditioner external unit respectively;

A second gap is formed between the chamfer plate (108) and the corner of the top cover of the air conditioner external unit.

3. The die for an air conditioner external unit top cover according to claim 2, wherein the value of the first gap ranges from 0.02mm to 0.08 mm;

the value of the second gap ranges from 0.02 mm to 0.08 mm.

4. The mold for an air conditioner external unit top cover according to claim 2, wherein a stopper (110) is formed at an edge of the lower mold (100), and the stopper (110) is adapted to abut against a side edge of the air conditioner external unit top cover so that the side edge of the air conditioner external unit top cover forms a folded edge.

5. The mold for the top cover of the air conditioner outdoor unit according to claim 4, wherein a guide plate (112) is arranged on one side of the lower mold (100) facing the upper mold (102), a guide surface (114) is formed on the guide plate (112), the guide surface (114) gradually approaches to the center position of the lower mold (100) from the top of the guide plate (112) to the bottom of the guide plate (112);

the stop block (110) is arranged on one side of the guide plate (112) facing the lower die (100).

6. The mold for the top cover of an air conditioner outdoor unit according to claim 5, wherein a first end of the stopper (110) gradually approaches the lower mold (100) from the guide plate (112) toward a direction away from the guide plate (112), and a bending gap is formed between a second end of the stopper (110) and the guide plate (112).

7. The mold for an air conditioner external top cover according to any one of claims 1 to 6, wherein at least one of the upper mold (102) and the lower mold (100) is provided with a limit post, and the upper mold (102) and the lower mold (100) are adapted to achieve limit between the upper mold (102) and the lower mold (100) through the limit post.

8. The mold for an air conditioner external top cover according to any one of claims 1 to 6, wherein at least one of the upper mold (102) and the lower mold (100) is provided with a guide post (116), and the upper mold (102) and the lower mold (100) are adapted to be guided by the guide post (116).

9. The mold for an air conditioner external head cover according to any one of claims 1 to 6, wherein a cavity (118) is formed in a side of the upper mold (102) facing the lower mold (100), a protrusion corresponding to the cavity (118) is formed in a side of the lower mold (100) facing the upper mold (102), and the cavity (118) and the protrusion are adapted to form a bead on the air conditioner external head cover in a state where the upper mold (102) and the lower mold (100) are clamped.

10. The mold for an air conditioner external unit top cover according to any one of claims 1 to 6, wherein a positioning structure adapted to position the air conditioner external unit top cover is provided on the lower mold (100).