Injection molding device and injection molding system

Abstract

The utility model discloses an injection molding device and an injection molding system. The injection molding device comprises an injection molding body and a pressing block, an insert containing cavity, an injection molding cavity and a compression containing cavity which communicate with one another are formed in the injection molding body, the insert containing cavity is used for containing inserts, and the injection molding cavity is used for conducting injection molding on the inserts; the pressing block can move in the compression containing cavity in the compression direction, and the pressing block and the insert are oppositely arranged in the compression direction. In the initial state, the pressing block is partially located in the injection molding cavity so as to abut against the insert in the compression direction. And in the injection molding state, the pressing block can be far away from the insert in the compression direction, so that the injection molding solution passes through the space between the pressing block and the insert. Through the arrangement of the pressing block, in the initial state, the pressing block abuts against the insert so as to fix the insert; in the injection molding state, the pressing block can be separated from the insert by a certain distance, and injection molding is not affected.

Description

Technical Field

[0001] The present application relates to the technical field of injection molds, and particularly to an injection device and an injection system. Background Art

[0002] In actual manufacturing, in order to achieve the installation and connection between various components or the installation and fixation of each part as a whole, some connecting parts such as screws and nuts are often embedded in plastic products to achieve effective fixation between components. To meet the installation strength and various mechanical properties between components, insert injection molding process is usually adopted to obtain injection products.

[0003] Insert injection molding is a process in which inserts are pre-fixed at appropriate positions in an injection mold, and then plastic is injected for molding. After the mold is opened, the inserts are tightly wrapped by the cooled and solidified plastic and buried in the plastic to obtain products with inserts such as threads and electrodes.

[0004] Generally, in order to facilitate the insertion of inserts into the injection mold, a certain clearance is set in the injection mold, which may cause the inserts to tilt when placed in the mold. Therefore, it is very crucial to fix the inserts in the correct position in the mold during the injection process, which affects the quality of the formed injection products. In blind-hole injection molding, in order to fix the inserts, magnets are usually used for adsorption or vacuum is used for adsorption to fix the inserts on the mold. However, the former has limitations on the material of the inserts, and the latter has greater limitations on the layout of other structures on the mold. Summary of the Utility Model

[0005] The main purpose of the present application is to provide an injection device and an injection system, aiming to solve the above-mentioned technical problems existing in the prior art.

[0006] To solve the above problems, the present application provides an injection device, which includes an injection main body and a pressing block. The injection main body is formed with an insert accommodating cavity, an injection cavity and a compression accommodating cavity that communicate with each other. The insert accommodating cavity is used to accommodate inserts, and the injection cavity is used to inject plastic into the inserts. The pressing block can move in the compression direction in the compression accommodating cavity, and the pressing block is disposed opposite to the insert in the compression direction. Wherein, in the initial state, the pressing block is partially located in the injection cavity to abut against the insert in the compression direction; in the injection state, the pressing block can move away from the insert along the compression direction so that the injection solution can pass between the pressing block and the insert.

[0007] Preferably, an extrusion inclined surface is provided on one side of the pressing block facing the insert. In the injection state, the extrusion inclined surface causes the pressing block to move away from the insert along the compression direction under the extrusion of the injection solution.

[0008] Preferably, the extrusion inclined surface is arranged around the compression direction, and the radial dimension of the extrusion inclined surface near one end of the insert is smaller than the radial dimension of the extrusion inclined surface far from one end of the insert.

[0009] Preferably, the injection molding device includes an elastic member, and the elastic member is elastically supported between the injection molding body and the pressing block so that the elastic member can be switched between the initial state and the injection molding state.

[0010] Preferably, the pressing block includes an extrusion part and a socket part which are connected to each other. The radial dimension of the extrusion part is larger than the radial dimension of the socket part. The elastic member is sleeved on the outer peripheral side of the socket part, and the elastic member is elastically supported between the injection molding body and the extrusion part.

[0011] Preferably, the pressing block further includes an abutting part, and the abutting part is connected to the side of the extrusion part far from the socket part. The radial dimension of the abutting part is smaller than the radial dimension of the extrusion part, and the abutting part is used for abutting against the insert.

[0012] Preferably, the pressing block includes an extrusion part and an abutting part which are connected to each other. The compression accommodating cavity includes a first chamber and a second chamber which communicate with each other. The abutting part is partially located in the first chamber, and the extrusion part is located in the second chamber. The dimension of the second chamber in the compression direction is larger than the dimension of the extrusion part in the compression direction, and the second chamber is used for limiting the pressing block in the compression direction.

[0013] Preferably, the moving length of the extrusion part moving along the compression direction in the second chamber is smaller than the length of the abutting part located in the injection molding cavity in the compression direction in the initial state.

[0014] Preferably, the injection molding body includes a first mold core, a second mold core and a fixing block. The first mold core and the second mold core are buckled with each other to form an insert accommodating cavity and the injection molding cavity, and the fixing block and the second mold core are buckled with each other to form the compression accommodating cavity.

[0015] To solve the above problems, the present application further provides an injection molding system, and the injection molding system includes an insert and the above-mentioned injection molding device.

[0016] Compared with the prior art, the injection molding device of the present application includes an injection molding body and a pressing block; the injection molding body is formed with an insert accommodating cavity, an injection molding cavity, and a compression accommodating cavity that communicate with each other. The insert accommodating cavity is used to accommodate the insert, and the injection molding cavity is used to inject the insert; the pressing block can move in the compression direction within the compression accommodating cavity, and the pressing block is disposed opposite to the insert in the compression direction. Among them, in the initial state, the pressing block is partially located in the injection molding cavity to abut against the insert in the compression direction; in the injection molding state, the pressing block can move away from the insert along the compression direction so that the injection molding solution passes between the pressing block and the insert. Through the above implementation manner, the pressing block can approach or move away from the insert in the compression direction to switch between the initial state and the injection molding state. In the initial state, the insert can be positioned by abutting the pressing block against the insert to achieve the fixing effect of insert injection molding, and in the injection molding state, a certain distance is separated between the pressing block and the insert to complete the purpose of injection molding between the pressing block and the insert, so as to be able to achieve the purpose of fixing and injection molding the insert in a simple manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 is a schematic structural diagram of the injection molding device provided by the present application in the initial state;

[0019] Figure 2 is a schematic structural diagram of the injection molding device provided by the present application in the injection molding state;

[0020] Figure 3 is a schematic structural diagram of the injection molding body provided by the present application.

[0021] BRIEF DESCRIPTION OF THE DRAWINGS: Injection molding device 1; Injection molding body 10; Insert accommodating cavity 110; Injection molding cavity 120; Positioning groove 121; Clearance groove 122; Compression accommodating cavity 130; First chamber 131; Second chamber 132; Fixed groove 133; First mold core 140; Second mold core 150; Fixed block 160; Pressing block 20; Abutting portion 210; Extrusion inclined surface 211; Elastic member 220; Sleeve portion 230; Extrusion portion 240; Compression direction X. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The following will describe in detail the embodiments of the technical solutions of the present application with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, so they are only examples and cannot be used to limit the protection scope of the present application.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terms used herein are for the purpose of describing specific embodiments only and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion.

[0024] In the description of the embodiments of this application, technical terms such as "first" and "second" are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity, specific order, or primary-secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "a plurality of" is more than two, unless otherwise specifically defined.

[0025] Reference to "embodiment" herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of this application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0026] In the description of the embodiments of this application, the term "and / or" is merely a description of the association relationship between associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " herein generally represents an "or" relationship between the associated objects before and after.

[0027] In the description of the embodiments of this application, the term "a plurality of" refers to more than two (including two). Similarly, "a plurality of groups" refers to more than two groups (including two groups), and "a plurality of pieces" refers to more than two pieces (including two pieces).

[0028] In the description of the embodiments of this application, the orientation or positional relationship indicated by technical terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the embodiments of this application and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of this application.

[0029] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can also be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific situations.

[0030] Insert molding is a process in which inserts are pre-fixed in appropriate positions in an injection mold, and then plastic is injected to form. After the mold is opened, the inserts are tightly wrapped by the cooled and solidified plastic and buried in the plastic to obtain products with inserts such as threads and electrodes.

[0031] Usually, in order to facilitate the insertion of inserts into the injection mold, a certain clearance is set in the injection mold, which may cause the inserts to tilt when placed in the mold. Therefore, it is very crucial to fix the inserts in the mold during the injection process, which affects the quality of the formed injection products. In blind-hole injection molding, in order to fix the inserts, magnets are usually used for adsorption or vacuum pumping for vacuum adsorption to fix the inserts on the mold. However, the former has limitations on the material of the inserts, and the latter has greater limitations on the layout of other structures on the mold.

[0032] To solve the technical problems existing in the related art, the present application provides an injection molding device 1, see Figure 1 、 Figure 2 and Figure 3 . Figure 1 is a schematic structural diagram of the injection molding device 1 provided by the present application in the initial state, Figure 2 is a schematic structural diagram of the injection molding device 1 provided by the present application in the injection molding state, Figure 3 is a schematic structural diagram of the injection molding body 10 provided by the present application.

[0033] The injection molding device 1 includes an injection molding body 10 and a pressing block 20; the injection molding body 10 is formed with an insert accommodating cavity 110, an injection cavity 120, and a compression accommodating cavity 130 that communicate with each other. The insert accommodating cavity 110 is used to accommodate inserts, and the injection cavity 120 is used to inject plastic into the inserts; the pressing block 20 can move in the compression direction X in the compression accommodating cavity 130, and the pressing block 20 is disposed opposite to the insert in the compression direction X. Among them, in the initial state, a part of the pressing block 20 is located in the injection cavity 120 to abut against the insert in the compression direction X; in the injection molding state, the pressing block 20 can move away from the insert along the compression direction X so that the injection solution can pass between the pressing block 20 and the insert.

[0034] When performing insert molding, first place the insert into the insert receiving cavity 110 in the injection molding body 10 for preliminary fixation. To facilitate placing the insert in the injection molding device 1, usually a clearance groove 122 of a certain size is provided in the insert receiving cavity 110, that is, the volume of the insert receiving cavity 110 is slightly larger than the volume of the insert. Therefore, the insert may tilt. So, using the pressing block 20 to press against the insert can forcibly correct and fix its position. Part of the pressing block 20 extends into the injection cavity 120 and presses against the surface of the insert. During injection molding, the pressing block 20 can be separated from the insert by a certain distance along the compression direction X, thereby releasing a certain injection space, so that the injection on the surface of the insert is not affected. The part of the insert located in the insert receiving cavity 110 is blocked and thus will not be injected. The part of the insert exposed in the injection cavity 120 has its surface filled with the injection solution to achieve injection molding. Since the clearance groove 122 communicates with the injection cavity 120, the injection solution will flow into it to inject the surface of the exposed part of the insert.

[0035] The pressing block 20 is provided with an extrusion inclined surface 211 on the side facing the insert. In the injection molding state, the extrusion inclined surface causes the pressing block 20 to move away from the insert along the compression direction X under the extrusion of the injection solution. The part of the pressing block 20 in contact with the insert is set in the shape of an inclined surface, so that during injection molding, as the injection solution fills the injection cavity 120, the fluid pressure is applied to the extrusion inclined surface 211, causing the pressing block 20 to automatically move along the compression direction X to separate the insert and the pressing block 20 by a certain distance, and thus the surface of the insert exposed in the injection cavity 120 can all be injected. It should be noted that during injection molding, even though the pressing block 20 is separated from the insert by a certain distance, the insert can still be fixed because the fluid pressure of the injection solution is applied not only to the extrusion inclined surface 211 but also to the surface of the insert.

[0036] The extrusion inclined surface 211 is arranged around the compression direction X. The radial dimension of the end of the extrusion inclined surface 211 close to the insert is smaller than the radial dimension of the end far from the insert. The diameter of the contact surface between the pressing block 20 and the insert gradually increases from small to large towards the part extending away from the insert, thus forming a cylindrical inclined surface. Furthermore, the fluid pressure can be applied to the circumferential inclined surface of the pressing block 20, causing the pressing block 20 to move away from the insert along the compression direction X under the extrusion of the fluid pressure.

[0037] The injection molding device 1 includes an elastic member 220, and the elastic member 220 is elastically supported between the injection molding body 10 and the pressing block 20, so that the elastic member 220 can be switched between the initial state and the injection molding state. Specifically, the elastic member 220 can be a spring. In the initial state, the elastic member 220 is in a certain compressed state, so that the elastic pressure of the elastic member 220 is applied to the pressing block 20, and then the pressing block 20 presses the insert along the compression direction X. In the injection molding state, the fluid pressure of the injection molding solution is applied to the extrusion inclined surface 211 of the pressing block 20, so that the pressing block 20 moves in the compression direction X to extrude the elastic member 220. It should be noted that the elastic pressure of the elastic member 220 set in the initial state should not be too large, otherwise the fluid pressure cannot extrude the pressing block 20 to make it move in the injection molding state. The elastic pressure of the elastic member 220 in the initial state should be less than the fluid pressure applied by the injection molding solution to the pressing block 20, so as to better enable the fluid pressure to extrude the pressing block 20 and further compress the elastic member 220.

[0038] The pressing block 20 includes an extrusion part 240 and a socket part 230 which are connected to each other. The radial dimension of the extrusion part 240 is larger than that of the socket part 230. The elastic member 220 is sleeved on the outer peripheral side of the socket part 230, and the elastic member 220 is elastically supported between the injection molding body 10 and the extrusion part 240. The elastic member 220 is sleeved on the socket part 230 of the pressing block 20 and fixed on the injection molding body 10. Because the diameter of the extrusion part 240 is larger than that of the socket part 230, the extrusion part 240 can limit the elastic member 220. The elastic member 220 can apply elastic pressure to the pressing block 20 through the extrusion part 240 to make it move, and the pressing block 20 can also apply a force to the elastic member 220 through the extrusion part 240 to compress it.

[0039] The pressing block 20 further includes an abutting part 210. The abutting part 210 is connected to the side of the extrusion part 240 away from the socket part 230. The radial dimension of the abutting part 210 is smaller than that of the extrusion part 240. The abutting part 210 is used to abut against the insert. The pressing block 20 is composed of three parts: the abutting part 210, the extrusion part 240, and the socket part 230. The abutting part 210 and the socket part 230 are respectively located on both sides of the extrusion part 240. The abutting part 210 is mainly used to press the insert and receive the fluid pressure applied by the injection molding solution through the extrusion inclined surface 211.

[0040] The compression accommodation cavity 130 includes a first chamber 131 and a second chamber 132 that communicate with each other. The abutting portion 210 is partially located in the first chamber 131, and the pressing portion 240 is located in the second chamber 132. The size of the second chamber 132 in the compression direction X is larger than the size of the pressing portion 240 in the compression direction X. The second chamber 132 is used to limit the pressing block 20 in the compression direction X. The abutting portion 210 can move in the first chamber 131 along the compression direction X to press the pressing block 20 against the insert or separate from the insert. In the initial state, the elastic pressure of the elastic member 220 is applied to the pressing portion 240, causing the pressing portion 240 to move to the side of the second chamber 132 away from the elastic member 220. In the injection molding state, it can move to the side of the second chamber 132 close to the elastic member 220, thereby compressing the elastic member 220. It is not difficult to understand that the side walls on both sides of the second chamber 132 in the compression direction X limit the movement of the pressing portion 240, and thus the movement of the pressing block 20 is also restricted.

[0041] The moving length of the pressing portion 240 moving in the second chamber 132 along the compression direction X is less than the length of the abutting portion 210 in the injection molding cavity 120 in the compression direction X in the initial state. In the initial state, the abutting portion 210 will rise into the injection molding cavity 120 in the compression direction X to press the insert. In the injection molding state, the abutting portion 210 will move in the first chamber 131 to separate from the insert. To prevent the abutting portion 210 from completely retracting into the first chamber 131 under the action of the fluid pressure, so that the injection molding solution enters the first chamber 131, resulting in injection molding failure. Therefore, it is necessary to limit the movement of the abutting portion 210 so that the abutting portion 210 can still partially rise into the injection molding cavity 120 under the action of the fluid pressure, thereby closing the first chamber 131. By setting the size of the second chamber 132 in the compression direction X, under the extrusion of the fluid pressure, the pressing portion 240 cannot move anymore when it moves to the side of the second chamber 132 close to the elastic member 220, so that the movement of the abutting portion 210 is also restricted, and the abutting portion 210 will not completely move into the first chamber 131. Preferably, by setting the size of the second chamber 132, it is appropriate that the abutting portion 210 can just still lift the extrusion inclined surface 211 into the injection molding cavity 120 under the action of the fluid pressure.

[0042] The injection molding body 10 includes a first mold core 140, a second mold core 150, and a fixing block 160. The first mold core 140 and the second mold core 150 are buckled with each other to form an insert accommodating cavity 110 and an injection molding cavity 120, and the fixing block 160 and the second mold core 150 are buckled with each other to form a compression accommodating cavity 130. The insert accommodating cavity 110 is mainly located on one side of the first mold core 140 and is mainly used to accommodate a fixed part of the insert. This part of the insert is closed by the insert surface and will not be injection molded. The injection molding cavity 120 is formed at the junction of the first mold core 140 and the second mold core 150. The surface part of the insert exposed in the injection molding cavity 120 will be injection molded. For the convenience of installing the insert, an avoidance groove 122 is provided in the injection molding cavity 120. In order to avoid the influence of the injection molding of the avoidance groove 122 on the installation and positioning of the subsequent obtained injection molded product, preferably, a positioning groove 121 is provided in the injection molding cavity 120. The length of the positioning groove 121 in the compression direction X is greater than the length of the avoidance groove 122 in the compression direction X, so that the installation and positioning of the injection molded product will not be affected by the injection molding of the avoidance groove 122. The compression accommodating cavity 130 includes a fixing groove 133. The fixing groove 133 is arranged on the fixing block 160 along the compression direction X. The elastic member 220 and the socket part 230 are accommodated in the fixing groove 133 and can move in the fixing groove 133. The fixing block 160 is fixed to the second mold core 150 by screws.

[0043] In summary, an injection molding device 1 provided by the present application uses the elastic pressure of a spring to make the pressing block 20 press against the insert, so that when the insert is inclined when installed in the insert accommodating cavity 110, it can be automatically corrected and fixed. The pressing block 20 can approach or move away from the insert in the compression direction to switch between the initial state and the injection molding state. In the initial state, the insert can be positioned by the pressing block 20 pressing against the insert to achieve the fixing effect of insert injection molding, and in the injection molding state, a certain distance is separated between the pressing block 20 and the insert to complete the injection molding between the pressing block 20 and the insert, so as to achieve the purpose of fixing and injection molding the insert in a simple manner.

[0044] The present application also provides an injection molding system. The injection molding system includes an insert and the above-mentioned injection molding device 1. Using the injection molding device 1 and the injection molding system of the present application for injection molding can improve the quality of the injection molded product, and the applicable range of the injection molded product is large.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be covered within the scope of the claims and the specification of the present application. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions that fall within the scope of the claims.

Claims

1. An injection molding device, characterized in that: The injection molding device comprises: An injection molding body is formed with an insert accommodating cavity, an injection molding cavity and a compression accommodating cavity which are interconnected, wherein the insert accommodating cavity is used to accommodate the insert, and the injection molding cavity is used to perform injection molding on the insert; A compression block, the compression block being movable in the compression accommodating cavity in a compression direction, the compression block being arranged opposite to the insert in the compression direction; Wherein, in the initial state, the clamping block is partially located in the injection cavity to abut against the insert in the compression direction; in the injection state, the clamping block can move away from the insert along the compression direction to allow the injection solution to pass between the clamping block and the insert.

2. The injection molding device according to claim 1, characterized in that: The pressing block is provided with an extrusion slope on one side facing the insert. In the injection molding state, the extrusion slope causes the pressing block to move away from the insert along the compression direction under the extrusion of the injection molding solution.

3. The injection molding device according to claim 2, characterized in that: The extrusion slope is arranged around the compression direction, and the radial dimension of the extrusion slope close to one end of the insert is smaller than the radial dimension of the extrusion slope away from one end of the insert.

4. The injection molding device according to any one of claims 1 to 3, characterized in that: The injection molding device comprises an elastic member, and the elastic member is elastically supported between the injection molding body and the pressing block so that the elastic member can be switched between the initial state and the injection molding state.

5. The injection molding device according to claim 4, characterized in that: The clamping block includes an extrusion portion and a sleeve portion connected to each other, the radial dimension of the extrusion portion is larger than the radial dimension of the sleeve portion, the elastic member is sleeved on the outer peripheral side of the sleeve portion, and the elastic member is elastically supported between the injection molding body and the extrusion portion.

6. The injection molding device according to claim 5, characterized in that: The pressing block further comprises an abutting portion, which is connected to a side of the extrusion portion away from the sleeve portion, has a radial dimension smaller than that of the extrusion portion, and is used for abutting against the insert.

7. The injection molding device according to any one of claims 1 to 3, characterized in that: The pressing block includes an extrusion portion and an abutment portion that are connected to each other, the compression accommodating chamber includes a first chamber and a second chamber that are connected to each other, the abutment portion is partially located in the first chamber, the extrusion portion is located in the second chamber, the size of the second chamber in the compression direction is larger than the size of the extrusion portion in the compression direction, and the second chamber is used to limit the pressing block in the compression direction.

8. The injection molding device according to claim 7, characterized in that: The moving length of the extrusion portion in the second cavity along the compression direction is smaller than the length of the abutment portion in the injection cavity in the compression direction in the initial state.

9. The injection molding device according to claim 1, characterized in that: The injection molding body comprises a first mold core, a second mold core and a fixing block. The first mold core and the second mold core are buckled together to form an insert accommodating cavity and the injection molding cavity. The fixing block and the second mold core are buckled together to form the compression accommodating cavity.

10. An injection molding system, characterized in that: The injection molding system comprises an insert and an injection molding device as claimed in any one of claims 1 to 9.

Images