Mold for injection molding of an automobile part with positioning structure

Abstract

This utility model relates to the field of injection molding technology, specifically to an automotive injection molding mold with a positioning structure, including an upper mold assembly, a lower mold assembly, a first hydraulic rod, a base, a third hydraulic rod, and a control box. The upper end of the base is connected to the first and third hydraulic rods, and the control box is connected to the upper end of the base near the front. The lower mold assembly is connected between the first and third hydraulic rods, and the upper mold assembly is connected to the upper end of the first and third hydraulic rods. During overall mold closing and mold opening, multiple pressure sensors are used to detect the pressure at the mold closing point to ensure that the pressure at each point is consistent. Then, the mold closing offset is automatically compensated by controlling the contraction force of the first and third hydraulic rods. When the first inner mold and the second inner mold are installed in the first and second outer molds, the limiting groove and the limiting post are correspondingly sleeved to form internal positioning. The upper mold assembly and the lower mold assembly are positioned on all four sides by locking blocks and locking grooves.

Description

Technical Field

[0001] This utility model relates to the field of injection molding technology, specifically to an automotive injection molding mold with a positioning structure. Background Technology

[0002] Most automotive parts have irregular structures and require injection molding.

[0003] Existing automotive injection molds have many shortcomings: 1. When the mold is closed and opened, the pressure at different points is inconsistent, affecting the stability of the mold. 2. Different molds are required to make automotive injection molds with different structures, and the practicality of a single mold is low. 3. Due to the irregular structure of automotive injection molds, it is inconvenient for the injection plastic to flow, and deformation is easily caused by a single force during demolding.

[0004] Therefore, it is necessary to design an automotive injection mold with a positioning structure to solve the problems mentioned in the background art. Utility Model Content

[0005] The purpose of this utility model is to solve the problems in the prior art by proposing an automotive injection mold with a positioning structure.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An automotive injection mold with a positioning structure includes an upper mold assembly, a lower mold assembly, a first hydraulic rod, a base, a third hydraulic rod, and a control box. The upper end of the base is connected to the first hydraulic rod and the third hydraulic rod. The control box is connected to the upper end of the base near the front. The lower mold assembly is connected between the first hydraulic rod and the third hydraulic rod. The upper end of the first hydraulic rod and the third hydraulic rod is connected to the upper mold assembly.

[0008] The upper module consists of a first outer mold, a top cover, and a first inner mold. The top cover is connected to the upper end of the first outer mold, and the first inner mold is connected to the middle of the lower end of the first outer mold.

[0009] The first outer mold has an external feed port on the front side, a locking block is provided at the lower end of the first outer mold near the edge, and a first insertion groove is provided in the middle of the interior of the first outer mold;

[0010] The upper end of the first inner mold is provided with multiple sets of inner feed ports;

[0011] The lower module consists of a second outer mold, a lower cover, and a second inner mold. The lower end of the second outer mold is connected to the lower cover, and the middle of the upper end of the second outer mold is connected to the second inner mold.

[0012] The first and second outer molds are each connected to a second hydraulic rod near the four corners inside. The upper end of the second hydraulic rod is connected to a locking plate. The first and second outer molds are each connected to a pressure sensor near the upper edge inside. The first and second outer molds are each provided with multiple sets of limiting posts near the lower part inside. The first and second outer molds are each provided with a connecting seat on the outside.

[0013] The upper cover and the lower cover are both provided with a coolant inlet and a coolant outlet.

[0014] The upper cover is provided with a sleeve at the lower end and the lower cover is provided near the edge;

[0015] Multiple sets of limiting grooves are provided on the outside of the first inner mold and the second inner mold, and pressure grooves are provided at the lower end of the first inner mold near the four corners and the lower end of the second inner mold near the four corners.

[0016] The upper end of the second inner mold is provided with multiple sets of hydraulic demolding columns;

[0017] A locking groove is provided on the upper part of the outer surface of the second outer mold near the edge.

[0018] Furthermore, the first hydraulic rod, the third hydraulic rod, and the base are connected by bolts; the lower parts of the first hydraulic rod and the third hydraulic rod are connected by a sleeve and locked by bolts to limit their position; the upper ends of the first hydraulic rod and the third hydraulic rod are connected by a sleeve and locked by bolts to limit their position; and the locking block and the locking groove are connected by a snap-fit ​​connection.

[0019] With the above technical solution, during overall mold closing and mold opening, the upper mold assembly is moved up and down by the upper part of the first hydraulic rod and the third hydraulic rod. The pressure sensor is used to detect the pressure at various points of mold closing. Then, the mold closing offset is automatically compensated by controlling the contraction force of the first hydraulic rod and the third hydraulic rod.

[0020] Furthermore, the first outer mold and the upper cover are connected by a sleeve and locked by bolts, and the first outer mold and the first inner mold are connected by a sleeve.

[0021] The above technical solution forms an upper module structure with internal and external components, which is convenient for replacement.

[0022] Furthermore, the second outer mold and the lower cover are connected by a sleeve and locked by bolts, and the second outer mold and the second inner mold are connected by a sleeve.

[0023] The above technical solution forms a lower module structure with internal and external components, which is convenient for replacement.

[0024] Furthermore, the limiting groove and the limiting post are connected by a sleeve, the second hydraulic rod and the second outer mold are connected by bolts, and the locking plate and the pressure groove are connected by a sleeve.

[0025] With the above technical solution, before manufacturing automotive injection molded parts, the corresponding first inner mold and second inner mold can be selected and installed in the first outer mold and second outer mold according to the requirements. Then, the locking plate is pressed down into the pressure groove by the second hydraulic rod. When the first inner mold and second inner mold are installed in the first outer mold and second outer mold, the limiting groove and the limiting post are correspondingly sleeved to form internal positioning. When the upper mold and lower mold are combined, the four sides of the upper mold and lower mold are positioned by the locking block and locking groove.

[0026] Furthermore, the inner feed port and the first insertion slot are connected by a pipe, and the first insertion slot and the outer feed port are connected by a pipe.

[0027] With the above technical solution, during injection molding, the injection molten plastic is injected into the injection groove between the first inner mold and the second inner mold through the outer inlet, the first insertion groove and the inner inlet. The multiple inner inlets make the injection of plastic more smooth and uniform.

[0028] Furthermore, the second outer mold and the pressure sensor are connected by bolts.

[0029] Through the above technical solution, multiple pressure sensors are used to detect pressure at the mold closing point to ensure that the pressure at each point at the mold closing point remains consistent.

[0030] Furthermore, the lower part of the hydraulic demolding column is embedded in the lower part of the second inner mold, and the upper part of the hydraulic demolding column is sleeved on the upper part of the second inner mold.

[0031] With the above technical solution, the injection molded part can be ejected by the upper part of the hydraulic ejection column during demolding. The hydraulic ejection column with multiple points makes demolding of the injection molded part more convenient.

[0032] Furthermore, the control box is electrically connected to the first hydraulic rod, the third hydraulic rod, the pressure sensor, the second hydraulic rod, and the hydraulic demolding column.

[0033] The above technical solutions form an overall control structure.

[0034] Compared with the prior art, the beneficial effects of this utility model are:

[0035] In this utility model, by setting a positioning structure for an automotive injection mold, the following effects can be achieved: 1. During overall mold closing and opening, the upper mold assembly is moved up and down by the upper part of the first and third hydraulic rods. Multiple pressure sensors are used to detect the mold closing point to ensure that the pressure at each point is consistent. Then, the mold closing offset is automatically compensated by controlling the contraction force of the first and third hydraulic rods; 2. Before the automotive injection mold is manufactured, the corresponding first inner mold and second inner mold can be selected and installed in the first outer mold and second outer mold according to the requirements. Then, the locking plate is pressed down by the second hydraulic rod. Within the pressure groove, when the first inner mold and the second inner mold are installed within the first outer mold and the second outer mold, the limiting groove and the limiting post are correspondingly fitted to form internal positioning. When the upper mold assembly and the lower mold assembly are combined, the four sides of the upper mold assembly and the lower mold assembly are positioned by locking blocks and locking grooves. 3. During injection molding, the injection molding liquid is injected into the injection groove between the first inner mold and the second inner mold through the external inlet, the first insertion groove and the internal inlet. The multiple internal inlets make the injection molding liquid enter more smoothly and evenly. 4. During demolding, the upper part of the hydraulic demolding column pushes out to eject the injection molded part. The hydraulic demolding column with multiple points makes demolding of the injection molded part more convenient. Attached Figure Description

[0036] Figure 1 This is an overall structural diagram of the present invention;

[0037] Figure 2 This is a structural diagram of the lower module of this utility model;

[0038] Figure 3 This is a structural diagram of the upper module of this utility model;

[0039] Figure 4 This is a structural diagram of the second inner mold of this utility model;

[0040] Figure 5 This is a structural diagram of the second outer mold of this utility model;

[0041] Figure 6 This is a structural diagram of the base of this utility model;

[0042] Figure 7 This is a structural diagram of the first inner mold of this utility model;

[0043] Figure 8 This is a structural diagram of the first outer mold of this utility model.

[0044] In the diagram: 1. Upper module; 101. First outer mold; 102. Top cover; 103. Coolant inlet; 104. Coolant outlet; 105. External feed port; 106. First inner mold; 107. Internal feed port; 108. Locking block; 109. First insertion slot; 2. Lower module; 201. Second outer mold; 202. Lower cover; 203. Second inner mold; 204. Pressure sensor; 205. Locking plate; 206. Hydraulic demolding column; 207. Limiting groove; 208. Pressing groove; 209. Locking groove; 210. Limiting column; 211. Connecting seat; 212. Second hydraulic rod; 213. Jacket; 3. First hydraulic rod; 4. Base; 5. Third hydraulic rod; 6. Control box. Detailed Implementation

[0045] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0046] Example 1

[0047] Reference Figures 1-8A positioning structure automotive injection mold includes an upper mold assembly 1, a lower mold assembly 2, a first hydraulic rod 3, a base 4, a third hydraulic rod 5, and a control box 6. The upper end of the base 4 is connected to the first hydraulic rod 3 and the third hydraulic rod 5. The control box 6 is connected to the upper end of the base 4 near the front. The lower mold assembly 2 is connected between the first hydraulic rod 3 and the third hydraulic rod 5. The upper end of the first hydraulic rod 3 and the third hydraulic rod 5 is connected to the upper mold assembly 1. The upper mold assembly 1 consists of a first outer mold 101, a top cover 102, and a first inner mold 106. The upper end of the first outer mold 101... The upper cover 102 is connected to the first outer mold 101, and the lower middle part of the first inner mold 106 is connected to the first outer mold 101; the front of the first outer mold 101 is provided with an outer feed port 105, the lower end of the first outer mold 101 is provided with a locking block 108 near the edge, and the middle of the interior of the first outer mold 101 is provided with a first insertion groove 109; the upper end of the first inner mold 106 is provided with multiple sets of inner feed ports 107; the lower mold assembly 2 consists of a second outer mold 201, a lower cover 202, and a second inner mold 203, and the lower end of the second outer mold 201 is connected to the lower cover 202, and the second outer mold 201 is connected to the lower cover 202. A second inner mold 203 is connected to the middle of the upper end; a second hydraulic rod 212 is connected to the inside of the first outer mold 101 and the second outer mold 201 near the four corners, and a locking plate 205 is connected to the upper end of the second hydraulic rod 212; a pressure sensor 204 is connected to the inside of the first outer mold 101 and the second outer mold 201 near the upper edge; multiple sets of limiting posts 210 are provided inside the first outer mold 101 and the second outer mold 201 near the lower part; a connecting seat 211 is provided on the outside of the first outer mold 101 and the second outer mold 201; the upper cover 10 2. Coolant inlet 103 and coolant outlet 104 are provided at the lower end of the upper cover 102 and the lower end of the lower cover 202 near the edge; a jacket 213 is provided at the lower end of the upper cover 102 and the upper end of the lower cover 202 near the edge; multiple sets of limiting grooves 207 are provided on the outside of the first inner mold 106 and the second inner mold 203; pressure grooves 208 are provided at the lower end of the first inner mold 106 near the four corners and the lower end of the second inner mold 203 near the four corners; multiple sets of hydraulic demolding pillars 206 are provided at the upper end of the second outer mold 201 near the edge. A locking groove 209 is provided on the upper part of the outer part of the second outer mold 201 near the edge.

[0048] like Figures 1-8As shown, the control box 6 is electrically connected to the first hydraulic rod 3, the third hydraulic rod 5, the pressure sensor 204, the second hydraulic rod 212, and the hydraulic demolding column 206. The first hydraulic rod 3, the third hydraulic rod 5, and the base 4 are connected by bolts. The lower parts of the first hydraulic rod 3 and the third hydraulic rod 5 are connected to the connecting seat 211 on the second outer mold 201 by a sleeve and are locked by bolts. The upper ends of the first hydraulic rod 3 and the third hydraulic rod 5 are connected to the first outer mold 101 by a sleeve and are locked by bolts. The second outer mold 201 and the pressure sensor 204 are connected by bolts. When the mold is closed and opened, the upper part of the first hydraulic rod 3 and the third hydraulic rod 5 drives the upper mold assembly 1 to move up and down. Multiple pressure sensors 204 detect the mold closure points to ensure that the pressure at each point is consistent. Then, the mold closure offset is automatically compensated by controlling the contraction force of the first hydraulic rod 3 and the third hydraulic rod 5.

[0049] like Figures 1-8 As shown, the locking block 108 and the locking groove 209 are connected by a snap-fit ​​connection; the first outer mold 101 and the upper cover 102 are connected by a sleeve connection and locked by bolts; the first outer mold 101 and the first inner mold 106 are connected by a sleeve connection; the second outer mold 201 and the lower cover 202 are connected by a sleeve connection and locked by bolts; the second outer mold 201 and the second inner mold 203 are connected by a sleeve connection; the limiting groove 207 and the limiting post 210 are connected by a sleeve connection; the second hydraulic rod 212 and the second outer mold 201 are connected by bolts; and the locking plate 205 and the pressure groove 208 are connected by a... Before manufacturing automotive injection molded parts, the corresponding first inner mold 106 and second inner mold 203 can be selected and installed in the first outer mold 101 and second outer mold 201 according to the requirements. Then, the locking plate 205 is pressed down into the pressure groove 208 by the second hydraulic rod 212. When the first inner mold 106 and second inner mold 203 are installed in the first outer mold 101 and second outer mold 201, the limiting groove 207 and the limiting post 210 are correspondingly sleeved to form internal positioning. When the upper mold group 1 and the lower mold group 2 are closed, the four sides of the upper mold group 1 and the lower mold group 2 are positioned by the locking block 108 and the locking groove 209.

[0050] like Figure 1 , Figure 3 , Figure 7 and Figure 8 As shown, the inner feed port 107 and the first insertion groove 109 are connected by a pipe, and the first insertion groove 109 and the outer feed port 105 are connected by a pipe. During injection molding, the injection molding liquid is injected into the injection groove between the first inner mold 106 and the second inner mold 203 through the outer feed port 105, the first insertion groove 109 and the inner feed port 107. The multiple inner feed ports 107 can make the injection of plastic more smooth and uniform.

[0051] like Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 6 As shown, the lower part of the hydraulic ejection column 206 is embedded in the lower part of the second inner mold 203, and the upper part of the hydraulic ejection column 206 is sleeved on the upper part of the second inner mold 203. When demolding, the upper part of the hydraulic ejection column 206 pushes out to eject the injection molded part. The hydraulic ejection column 206 with multiple points makes it easier to demold the injection molded part.

[0052] Example 2

[0053] This embodiment is basically the same as Embodiment 1 in terms of overall structure and working principle. The main difference lies in the structure of the internal injection groove of the first inner mold 106 and the second inner mold 203. In this embodiment, both the first inner mold 106 and the second inner mold 203 are detachable structures that can be replaced as needed, thus making them suitable for the production of different automotive injection molded parts. When producing different automotive injection molded parts, different first inner molds 106 and second inner molds 203 need to be assembled. Then, the second hydraulic rod 212 drives the locking plate 205 to press down into the pressure groove 208, thereby pressing the four corners of the first inner mold 106 and the second inner mold 203 tightly. The structure and function of other components are consistent with those of Embodiment 1.

[0054] The working process of this utility model is as follows: When using this automotive injection molding mold with a positioning structure, before manufacturing the automotive injection mold, the corresponding first inner mold 106 and second inner mold 203 can be selected and installed in the first outer mold 101 and second outer mold 201 according to requirements. Then, the locking plate 205 is pressed down into the pressure groove 208 by the second hydraulic rod 212. When the first inner mold 106 and second inner mold 203 are installed in the first outer mold 101 and second outer mold 201, the limiting groove 207 and the limiting post 210 are correspondingly sleeved to form internal positioning. When the upper mold group 1 and the lower mold group 2 are closed, the four sides of the upper mold group 1 and the lower mold group 2 are positioned by the locking block 108 and the locking groove 209. When the overall mold is closed and separated, the locking plate 205 is pressed down into the pressure groove 208 by the locking block 108 and the locking groove 209. The upper parts of the first hydraulic rod 3 and the third hydraulic rod 5 drive the upper mold assembly 1 to move up and down. Multiple pressure sensors 204 detect the mold closing point to ensure that the pressure at each point is consistent. Then, the mold closing offset is automatically compensated by controlling the contraction force of the first hydraulic rod 3 and the third hydraulic rod 5. During injection molding, the injection molten plastic is injected into the injection groove between the first inner mold 106 and the second inner mold 203 through the outer feed port 105, the first insertion groove 109 and the inner feed port 107. The multiple inner feed ports 107 make the injection of plastic smoother and more uniform. During demolding, the upper part of the hydraulic demolding column 206 pushes out to eject the injection molded part. The multi-point hydraulic demolding column 206 makes demolding of the injection molded part more convenient.

[0055] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A positioning structure for automotive injection molds, comprising an upper mold assembly (1), a lower mold assembly (2), a first hydraulic rod (3), a base (4), a third hydraulic rod (5), and a control box (6), characterized in that: The upper end of the base (4) is connected to the first hydraulic rod (3) and the third hydraulic rod (5). The upper end of the base (4) is connected to the control box (6) near the front. The lower module (2) is connected between the first hydraulic rod (3) and the third hydraulic rod (5). The upper end of the first hydraulic rod (3) and the third hydraulic rod (5) is connected to the upper module (1). The upper module (1) is composed of a first outer mold (101), an upper cover (102) and a first inner mold (106), and the upper end of the first outer mold (101) is connected to the upper cover (102), and the lower middle part of the first outer mold (101) is connected to the first inner mold (106). The first outer mold (101) has an external feed port (105) on the front side, a locking block (108) is provided at the lower end of the first outer mold (101) near the edge, and a first insertion groove (109) is provided in the middle of the interior of the first outer mold (101). The upper end of the first inner mold (106) is provided with multiple sets of inner feed ports (107); The lower module (2) consists of a second outer mold (201), a lower cover (202), and a second inner mold (203). The lower end of the second outer mold (201) is connected to the lower cover (202), and the middle of the upper end of the second outer mold (201) is connected to the second inner mold (203). The first outer mold (101) and the second outer mold (201) are each connected to a second hydraulic rod (212) near the four corners. The upper end of the second hydraulic rod (212) is connected to a locking plate (205). The first outer mold (101) and the second outer mold (201) are each connected to a pressure sensor (204) near the upper edge. The first outer mold (101) and the second outer mold (201) are each provided with multiple sets of limiting posts (210) near the lower part. The first outer mold (101) and the second outer mold (201) are each provided with a connecting seat (211) on the outside. The upper end of the upper cover (102) and the lower end of the lower cover (202) are both provided with a coolant inlet (103) and a coolant outlet (104); The lower end of the upper cover (102) and the upper end of the lower cover (202) near the edge are both provided with a sleeve (213); Multiple sets of limiting grooves (207) are provided on the outside of the first inner mold (106) and the second inner mold (203). Pressure grooves (208) are provided at the lower end of the first inner mold (106) near the four corners and at the lower end of the second inner mold (203) near the four corners. The upper end of the second inner mold (203) is provided with multiple sets of hydraulic demolding pillars (206); A locking groove (209) is provided on the upper part of the outer surface of the second outer mold (201) near the edge.

2. The automotive injection mold with a positioning structure according to claim 1, characterized in that: The first hydraulic rod (3), the third hydraulic rod (5) and the base (4) are connected by bolts. The lower part of the first hydraulic rod (3) and the third hydraulic rod (5) are connected by a sleeve and locked by bolt limit. The upper end of the first hydraulic rod (3) and the third hydraulic rod (5) and the first outer mold (101) are connected by a sleeve and locked by bolt limit. The locking block (108) and the locking groove (209) are connected by a snap-fit.

3. The automotive injection mold with a positioning structure according to claim 1, characterized in that: The first outer mold (101) and the upper cover (102) are connected by a sleeve and locked by bolts. The first outer mold (101) and the first inner mold (106) are connected by a sleeve.

4. The automotive injection mold with a positioning structure according to claim 1, characterized in that: The second outer mold (201) and the lower cover (202) are connected by a sleeve and locked by bolts. The second outer mold (201) and the second inner mold (203) are connected by a sleeve.

5. The automotive injection mold with a positioning structure according to claim 1, characterized in that: The limiting groove (207) and the limiting post (210) are connected by a sleeve, the second hydraulic rod (212) and the second outer mold (201) are connected by bolts, and the locking plate (205) and the pressure groove (208) are connected by a sleeve.

6. The automotive injection mold with a positioning structure according to claim 1, characterized in that: The inner feed port (107) and the first insertion slot (109) are connected by a pipe, and the first insertion slot (109) and the outer feed port (105) are connected by a pipe.

7. The automotive injection mold with a positioning structure according to claim 1, characterized in that: The second outer mold (201) and the pressure sensor (204) are connected by bolts.

8. The automotive injection mold with a positioning structure according to claim 1, characterized in that: The lower part of the hydraulic demolding column (206) is embedded in the lower part of the second inner mold (203), and the upper part of the hydraulic demolding column (206) is sleeved on the upper part of the second inner mold (203).

9. The automotive injection mold with a positioning structure according to claim 1, characterized in that: The control box (6) is electrically connected to the first hydraulic rod (3), the third hydraulic rod (5), the pressure sensor (204), the second hydraulic rod (212), and the hydraulic demolding column (206).

Images