Plastic product processing injection mold

Abstract

The utility model relates to the technical field of molds, in particular to a plastic product processing injection mold. Comprising a base, a lower mold, an upper mold and a cooling mechanism, the cooling mechanism comprises a mounting plate, a positioning block, a quick connector, a liquid guide pipe, a spray head, a sealing plate, a discharge pipe and a descending device, and during injection molding, cooling liquid is conveyed into the liquid guide pipe through a movable pipeline and the quick connector; cooling liquid is sprayed to the top of a water passing cavity, not communicated with a forming cavity of the lower mold, of the lower mold through the multiple spray heads, so that the temperature of the lower mold can be reduced through spraying of the cooling liquid, and then rapid cooling forming of internal workpieces is facilitated; therefore, the problems that an existing mold does not have a rapid cooling function, and the molding speed of a product in the mold is low due to the fact that the temperature of injection molding raw materials is high can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, and particularly relates to an injection mold for plastic product processing. Background Art

[0002] When the current injection mold is in use, the workpiece after plastic injection molding of the plastic product is likely to get stuck in the lower mold, resulting in inconvenient demoulding and affecting production efficiency.

[0003] After retrieval, the prior art CN219213984U discloses an injection mold for plastic product processing, which relates to the technical field of injection molds. It includes a lower mold, an upper mold is arranged at the top of the lower mold, limit rods are installed at the four corners of the top of the lower mold, one end of the limit rod penetrates through the bottom of the upper mold, and the upper mold is slidably connected with the limit rod. A support plate is arranged inside the lower mold, vertical rods are slidably connected to both sides of the top of the lower mold, support rods are installed on both sides of the bottom of the support plate, a cross bar is connected to the bottom of the support rod, springs are installed on both sides of the bottom of the cross bar, and the bottom of the spring is connected to the inner bottom of the lower mold. The bottom of the vertical rod is connected to the top of the cross bar, and a sealing plate is installed at the bottom of the upper mold. This utility model can effectively prevent the workpiece after plastic molding from getting stuck in the lower mold and improve the demoulding efficiency, and has high practical value.

[0004] However, the above mold has the following problems during processing: it does not have the function of rapid cooling. Due to the high temperature of the injection molding raw material, the product forming speed in the mold is slow. Summary of the Utility Model

[0005] The purpose of the utility model is to provide an injection mold for plastic product processing to solve the problem that the existing mold does not have the function of rapid cooling, and due to the high temperature of the injection molding raw material, the product forming speed in the mold is slow.

[0006] To achieve the above purpose, the technical scheme adopted by the utility model is as follows: The utility model provides an injection mold for plastic product processing, including a base, a lower mold is detachably installed on the base, an upper mold is arranged above the lower mold, an injection hole is arranged on the upper mold, and a cooling mechanism is further included;

[0007] The cooling mechanism includes a mounting plate, positioning blocks, quick connectors, liquid guide pipes, spray nozzles, a sealing plate, a discharge pipe, and a downward movement device. The mounting plate is detachably connected to the lower mold and is located on the front side of the water passage cavity at the bottom of the lower mold. The water passage cavity is not connected to the molding cavity of the lower mold. The positioning blocks are integrally formed with the mounting plate, are slidably connected to the lower mold, and are symmetrically arranged. A plurality of the quick connectors are screwed and installed on the inlet side of the threaded water inlets on the mounting plate and are connected to the liquid distribution valve of an external refrigeration device through movable pipes. A plurality of the liquid guide pipes are threadedly connected to the mounting plate, are communicated with the quick connectors, and are located in the water passage cavity of the lower mold. A plurality of the spray nozzles are screwed and installed on the liquid guide pipes, and their liquid outlets face the top of the water passage cavity of the lower mold. The sealing plate is fixed at the opening of the water passage cavity on the side of the lower mold away from the mounting plate. The discharge pipe is welded to the water outlet of the sealing plate and is connected to a coolant collection device through a movable pipe. The downward movement device is arranged on the base close to the upper mold side.

[0008] Among them, the downward movement device includes a mounting bracket, a cylinder, and a guiding component. The mounting bracket is detachably connected to the base and is located on the left side of the base. The cylinder is fixed on the top of the mounting bracket, and its output end is connected to the upper mold. The guiding component is arranged on the right side of the upper mold.

[0009] Among them, the guiding component includes a fixed bracket and a matching component. The fixed bracket is fixed on the right side of the base. The matching component is arranged on the side of the fixed bracket close to the upper mold.

[0010] Among them, the matching component includes a guiding rod and a first sliding sleeve. The guiding rod is threadedly connected to the upper mold and is slidably connected to the first sliding sleeve. The first sliding sleeve is fixed on the fixed bracket and has a T-shaped structure.

[0011] Among them, the downward movement device further includes a connecting block, a second sliding sleeve, and a stabilizing rod. The connecting block is integrally formed with the upper mold and is located on the left side of the upper mold. The second sliding sleeve is fixed on the mounting bracket. The stabilizing rod is threadedly connected to the connecting block and is slidably connected to the second sliding sleeve.

[0012] An injection mold for processing plastic products of the present utility model drives the upper mold to move downward through controlling the action of the downward device during processing to cooperate with the lower mold to form a closed molding cavity. Then, the injection plastic liquid is injected into the molding cavity through the injection hole on the upper mold. Finally, after waiting for cooling, the plastic product is taken out to complete the processing. Meanwhile, during injection molding, the coolant can be conveyed into the liquid guide pipe through the movable pipe via the quick connector, and the coolant is sprayed through multiple nozzles onto the top of the water passing cavity of the lower mold that is not communicated with its molding cavity, so that the temperature of the lower mold can be reduced through the spraying of the coolant, and thus it is beneficial for the internal workpiece to be quickly cooled and formed. The temperature-bearing coolant after heat exchange treatment flows back to the external collection device through the discharge pipe, thereby being able to solve the problem that the existing mold does not have the function of rapid cooling, and due to the high temperature of the injection molding raw material, the product forming speed in the mold is slow. Description of the Drawings

[0013] The present utility model can be further illustrated by the non-limiting embodiments given in the drawings.

[0014] Figure 1 It is a schematic diagram of the overall structure of the injection mold for processing plastic products of the first embodiment of the present utility model.

[0015] Figure 2 It is a cross-sectional view of the lower mold of the first embodiment of the present utility model.

[0016] Figure 3 It is a schematic diagram of the overall structure of the injection mold for processing plastic products of the second embodiment of the present utility model.

[0017] In the figure: 101 - base, 102 - lower mold, 103 - upper mold, 104 - injection hole, 105 - mounting plate, 106 - positioning block, 107 - quick connector, 108 - liquid guide pipe, 109 - nozzle, 110 - sealing plate, 111 - discharge pipe, 112 - mounting bracket, 113 - cylinder, 114 - fixed bracket, 115 - guiding rod, 116 - first sliding sleeve, 201 - connecting block, 202 - second sliding sleeve, 203 - stabilizing rod. Detailed Description of the Embodiments

[0018] In order to enable those skilled in the art to better understand the present utility model, the technical solutions of the present utility model will be further described below in conjunction with the drawings and embodiments.

[0019] Embodiment 1:

[0020] As Figure 1 and Figure 2 shown, where Figure 1 is a schematic diagram of the overall structure of the injection mold for processing plastic products, Figure 2It is a cross-sectional view of the lower mold 102. The present utility model provides an injection mold for plastic product processing, which includes a base 101, a lower mold 102, an upper mold 103, and a cooling mechanism. The cooling mechanism includes a mounting plate 105, a positioning block 106, a quick connector 107, a liquid guide pipe 108, a spray head 109, a sealing plate 110, a discharge pipe 111, and a downward movement device. The downward movement device includes a mounting bracket 112, a cylinder 113, and a guiding component. The guiding component includes a fixed bracket 114 and a mating component. The mating component includes a guiding rod 115 and a first sliding sleeve 116. Through the foregoing solution, the problem that the existing mold does not have the function of rapid cooling and the slow forming speed of products in the mold due to the high temperature of the injection molding raw material can be solved. It can be understood that the foregoing solution is beneficial to the rapid cooling and forming of plastic products during injection molding processing.

[0021] In this embodiment, the lower mold 102 is detachably mounted on the base 101. An upper mold 103 is arranged above the lower mold 102. An injection hole 104 is arranged on the upper mold 103. The base 101 can be fixed by positioning pins and bolts. The lower mold 102 is fixed by positioning pins and bolts. Four positioning holes are arranged on the top end surface of the lower mold 102, and the positioning holes can be matched with the positioning pins arranged on the upper mold 103 for positioning. The injection hole 104 is used for injecting the processing liquid.

[0022] Among them, the mounting plate 105 is detachably connected to the lower die 102 and is located on the front side of the water passing cavity at the bottom of the lower die 102. The water passing cavity is not communicated with the molding cavity of the lower die 102. The positioning block 106 is integrally formed with the mounting plate 105, is slidably connected to the lower die 102, and is symmetrically arranged. A plurality of quick connectors 107 are screwed and installed on the inlet side of the threaded water inlet on the mounting plate 105 and are connected to the liquid distribution valve of the external refrigeration device through a movable pipe. A plurality of liquid guide pipes 108 are threadedly connected to the mounting plate 105, are communicated with the quick connectors 107, and are located in the water passing cavity of the lower die 102. A plurality of spray heads 109 are screwed and installed on the liquid guide pipes 108, and their liquid outlet faces the top of the water passing cavity of the lower die 102. The sealing plate 110 is fixed on the orifice of the water passing cavity on the side of the lower die 102 away from the mounting plate 105. The discharge pipe 111 is welded to the water outlet of the sealing plate 110 and is connected to the coolant collection device through a movable pipeline. The downward movement device is arranged on the base 101 close to the upper die 103 side. The mounting plate 105 is fixed by a positioning pin and a bolt. A plurality of through threaded holes are provided on the mounting plate 105. The quick connector 107 is installed on the inlet side of the through threaded hole, and the liquid guide pipe 108 is installed on the outlet side. The quick connector 107 can be directly connected to a movable air pipe. The coolant delivery pipe of this application can directly adopt a rubber movable air pipe. The coolant refrigeration device matched in this application can adopt the refrigeration device structure disclosed in the prior art CN218803823U. The principle is refrigeration by a refrigeration sheet, and it is pumped and transported to the liquid distribution valve through a pumping pump. At the same time, the coolant collection device can adopt a collection tank, and the temperature-bearing coolant is pumped to the refrigeration device by a pumping pump for refrigeration again to realize recycling. The outer threaded end of the bottom of the spray head 109 is directly installed in the threaded liquid outlet of the liquid guide pipe 108. The sealing plate 110 is fixed by bolts. The discharge pipe 111 is welded on the sealing plate 110 for discharging the coolant after heat exchange work. Heat-resistant rubber gaskets are respectively arranged at the contact surfaces of the mounting plate 105 and the sealing plate 110 with the lower die 102 for preventing water leakage. The downward movement device is used to drive the upper die 103 to move vertically. A stepped groove is arranged at the end of the liquid guide pipe 108 close to the quick connector 107, and a filter screen is installed in the stepped groove through a countersunk head bolt. This structure is beneficial to reducing impurities in the coolant from entering the spray head 109.

[0023] Secondly, the mounting bracket 112 is detachably connected to the base 101 and is located on the left side of the base 101; the cylinder 113 is fixed to the top of the mounting bracket 112, and its output end is connected to the upper mold 103; the guiding assembly is arranged on the right side of the upper mold 103. The mounting bracket 112 is fixed by positioning pins and bolts. The front cylinder head of the cylinder 113 is fixed to the mounting bracket 112 by bolts. The external threaded end on the piston rod on the output end side of the cylinder 113 is directly engaged with the threaded connection hole on the upper mold 103 to achieve connection. The guiding assembly is used for the vertical movement cooperation of the upper mold 103.

[0024] Then, the fixing bracket 114 is fixed to the right side of the base 101; the mating member is arranged on the side of the fixing bracket 114 close to the upper mold 103. The fixing bracket 114 is fixed by positioning pins and bolts. The mating member is used for guiding and cooperation.

[0025] Finally, the guiding rod 115 is threadedly connected to the upper mold 103 and is slidably connected to the first sliding sleeve 116; the first sliding sleeve 116 is fixed to the fixing bracket 114 and has a T-shaped structure. The first sliding sleeve 116 is fixed by bolts. The external threaded end at the bottom of the guiding rod 115 is directly engaged with the threaded connection hole on the upper mold 103 to achieve connection and can be slidably mated with the first sliding sleeve 116.

[0026] When using the present utility model to solve the problem that the existing mold does not have the function of rapid cooling, and due to the high temperature of the injection molding raw material, the product forming speed in the mold is slow, during processing, the downward device is controlled to act to drive the upper mold 103 to move downward to cooperate with the lower mold 102 to form a closed molding cavity, then the injection molding liquid is injected into the molding cavity from the injection hole 104 on the upper mold 103, and finally the plastic product is taken out after cooling to complete the processing. At the same time, during injection molding, the cooling liquid can be conveyed into the liquid guide pipe 108 through the movable pipe through the quick connector 107. The cooling liquid is sprayed on the top of the water passing cavity of the lower mold 102 that is not communicated with its molding cavity through a plurality of nozzles 109, so that the temperature of the lower mold 102 can be reduced by the spraying of the cooling liquid, and thus it is beneficial for the workpiece inside the molding cavity to be rapidly cooled and formed. The temperature-bearing cooling liquid after heat exchange treatment flows back to the external collection device through the discharge pipe 111, and thus the problem that the existing mold does not have the function of rapid cooling and the product forming speed in the mold is slow due to the high temperature of the injection molding raw material can be solved.

[0027] Embodiment Two:

[0028] As Figure 3 shown, wherein Figure 3It is a schematic diagram of the overall structure of an injection mold for plastic product processing. On the basis of the first embodiment, the present utility model provides an injection mold for plastic product processing. The downward device further includes a connecting block 201, a second sliding sleeve 202, and a stabilizing guide rod 203.

[0029] Among them, the connecting block 201 is integrally formed with the upper mold 103 and is located on the left side of the upper mold 103; the second sliding sleeve 202 is fixed on the mounting bracket 112; the stabilizing guide rod 203 is threadedly connected to the connecting block 201 and is slidably connected to the second sliding sleeve 202. A vertically penetrating threaded hole is provided on the connecting block 201 to facilitate the installation and connection of the external threaded end of the bottom of the stabilizing guide rod 203. The second sliding sleeve 202 is fixedly installed on the mounting bracket 112 by bolts and is slidably engaged with the stabilizing guide rod 203 after installation.

[0030] In this embodiment, further through the cooperation of the provided connecting block 201, the second sliding sleeve 202, and the stabilizing guide rod 203, the stability of the cooperation between the downward movement of the upper mold 103 and the lower mold 102 can be improved.

[0031] The above embodiments only exemplarily illustrate the principles and effects of the present utility model and are not used to limit the present utility model. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present utility model. Therefore, all equivalent modifications or changes completed by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present utility model should still be covered by the claims of the present utility model.

Claims

1. A plastic product processing injection mold, comprising a base, a lower mold is detachably mounted on the base, an upper mold is arranged above the lower mold, and an injection hole is arranged on the upper mold, characterized in that: Also includes a cooling mechanism; The cooling mechanism includes a mounting plate, a positioning block, a quick connector, a liquid guide tube, a nozzle, a sealing plate, a discharge pipe and a descending device. The mounting plate is detachably connected to the lower mold and is located at the front side of the water passage cavity at the bottom of the lower mold. The water passage cavity is not connected to the molding cavity of the lower mold. The positioning block is integrally formed with the mounting plate and is slidably connected to the lower mold and symmetrically arranged. A plurality of the quick connectors are screwed on the inlet side of the threaded water inlet on the mounting plate and are connected to the liquid separation valve of an external refrigeration device through a movable pipe. A plurality of the liquid guide tubes are threadedly connected to the mounting plate and are connected to the quick connector and are located in the water passage cavity of the lower mold. A plurality of the nozzles are screwed on the liquid guide tube and their liquid outlets face the top of the water passage cavity of the lower mold. The sealing plate is fixed on the cavity opening of the water passage cavity on the side of the lower mold away from the mounting plate. The discharge pipe is welded to the water outlet of the sealing plate and is connected to the coolant collecting device through a movable pipe. The descending device is arranged on the side of the base close to the upper mold.

2. The plastic product processing injection mold according to claim 1, characterized in that: The downward device includes a mounting bracket, a cylinder and a guide assembly. The mounting bracket is detachably connected to the base and is located on the left side of the base; the cylinder is fixed on the top of the mounting bracket, and its output end is connected to the upper mold; the guide assembly is arranged on the right side of the upper mold.

3. The plastic product processing injection mold according to claim 2, characterized in that: The guide assembly includes a fixed bracket and a matching component. The fixed bracket is fixed on the right side of the base; the matching component is arranged on a side of the fixed bracket close to the upper mold.

4. The plastic product processing injection mold according to claim 3, characterized in that: The matching component includes a guide rod and a first sliding sleeve. The guide rod is threadedly connected to the upper mold and is slidably connected to the first sliding sleeve. The first sliding sleeve is fixed on the fixed bracket and is a T-shaped structure.

5. The plastic product processing injection mold according to claim 2, characterized in that: The downward device also includes a connecting block, a second sliding sleeve and a stabilizing guide rod. The connecting block is integrally formed with the upper mold and is located on the left side of the upper mold; the second sliding sleeve is fixed on the mounting bracket; the stabilizing guide rod is threadedly connected to the connecting block and slidably connected to the second sliding sleeve.

Images