Opening and closing mold with ejector pin automatic reset structure

Abstract

The utility model relates to the technical field of opening and closing molds, and discloses an opening and closing mold with an automatic ejector pin resetting structure, which comprises a lower layer plate, four corners of the lower layer plate are fixedly connected with return pin columns, the return pin columns are sleeved with return pin springs, the exteriors of the return pin columns are connected with a secondary ejector pin plate in a sliding manner, and the secondary ejector pin plate is sleeved with a return pin spring. A plurality of pin supporting springs are arranged in the secondary ejector pin plate, a plurality of middle supporting bushes are connected in the secondary ejector pin plate in a sliding manner, a plurality of supporting columns are connected in the secondary ejector pin plate in a sliding manner, and a secondary ejector pin lower plate is fixedly connected to the bottom side of the secondary ejector pin plate. According to the utility model, the thimble can be quickly and accurately reset through the thimble return spring and the thimble holding spring. Therefore, in the continuous production process, the reset operation of the ejector pin does not need to be manually intervened, the time is saved, the circulation efficiency of mold opening and closing and product production is improved, and the production efficiency is integrally improved.

Description

Technical Field

[0001] The utility model relates to the technical field of opening and closing molds, in particular to an opening and closing mold with an ejector pin automatic resetting structure. Background Art

[0002] A mold opening and closing system with an automatic ejector pin reset mechanism automatically resets the ejector pin during the mold opening and closing process. This mechanism typically refers to a mechanism that automatically returns the ejector pin plate to its initial position during the mold opening and closing process, facilitating the next injection molding operation. This mechanism improves production efficiency while ensuring safety and stability during operation.

[0003] However, in existing technologies, most mold opening and closing features with automatic ejector pin reset mechanisms rely on manual adjustment. After ejecting a product, the ejector pins in traditional molds must be manually reset by pushing the ejector plate back into place. This is time-consuming and labor-intensive. Furthermore, during continuous production, manual adjustments are required each time, extending production cycles and reducing overall production efficiency. Therefore, a mold opening and closing feature with an automatic ejector pin reset mechanism has been proposed to address this issue. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides an opening and closing mold with an automatic reset structure of an ejector pin, aiming to improve the problem that most opening and closing molds with automatic reset structures of an ejector pin in the existing technology are reset manually, and this process requires waiting, resulting in reduced work efficiency.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] The top end of the lower plate is fixedly connected to the bottom plate, and the front end of the lower plate is fixedly connected to the bottom plate.

[0007] As a further description of the above technical solution:

[0008] The ejection assembly includes two inclined ejector seats, each two of the inclined ejector seats are slidably connected to an inclined ejector guide block on the outside, the top side of the lower plate is fixedly connected to the lower plate, the front and rear ends of the lower plate are respectively fixedly connected to the outside of the two inclined ejector guide blocks, the bottom side of the inclined ejector guide block is fixedly connected to a plurality of ejector pins, the top side of each two ejector pins is fixed with a rear mold core, the top side of the rear mold core is fixedly connected with an inclined ejector plate, the top side of the bottom plate is fixedly connected with a plurality of slider strips, the top sliding assembly of each two slider strips has a slider seat, and the top front end of the top side of the bottom plate is fixed A fixed connection limit block, a plurality of bottom wear-resistant plates are fixedly connected to the top side of the bottom plate, a back wear-resistant plate is fixedly connected to the top side of the slider seat, a sliding block is fixedly connected to the outside of the slider seat, the bottom end of the sliding block is fixedly connected to a fixed plate, the inner wall of the fixed plate is fixedly connected to a bearing protection sleeve, the inner wall of the bearing protection sleeve is rotatably connected to a bearing column, the outside of the bearing column is fixedly connected to a gear, the top side of the gear is fixedly connected to a circular arc core insert, the top side of the fixed plate is slidably connected to a sliding rack, and the outside of the sliding block is fixedly connected to a slider insert;

[0009] As a further description of the above technical solution:

[0010] The outer portion of the arc core-pulling insert is rotatably connected to the inner wall of the slider insert, and the sliding rack is meshed with the gear;

[0011] As a further description of the above technical solution:

[0012] The four corners of the bottom plate are slidably connected to guide rods, the top sides of multiple guide rods are fixedly connected to the middle plate, the front and rear ends of the bottom side of the middle plate are fixedly connected to two guide sleeves, the rear end of the bottom side of the middle plate is installed with a front mold core, the left and right ends of the bottom side of the middle plate are fixedly connected to rack shovels, the left and right ends of the bottom side of the middle plate are fixedly connected to slider shovels, a backhoe is installed in the middle of the bottom side of the middle plate, and multiple inclined guide column pressure plates are installed on the top of the middle plate;

[0013] As a further description of the above technical solution:

[0014] The top side of the middle plate is fixedly connected to the top plate, the top end of the top plate is fixedly connected to the upper plate, the middle part of the upper plate is fixedly connected to a positioning ring, the front side of the positioning ring is fixedly connected to the front mold mechanical plate, the front side of the top plate is fixedly connected to the hot runner plate, the front right end of the hot runner plate is installed with a solenoid valve, the middle part of the front side of the hot runner plate is installed with a temperature sensor, the front left end of the hot runner plate is installed with a wiring slot, the far side of the middle plate is fixedly connected to the front mold plate, the far side of the bottom plate is fixedly connected to the lock module, the far side of the lower plate is fixedly connected to the left and right ends of the far side, and the far bottom end of the lower plate is installed with a travel switch;

[0015] As a further description of the above technical solution:

[0016] The middle plate and the left front end are equipped with a lock module, and the front bottom end of the lower plate is fixedly connected to the rear template;

[0017] As a further description of the above technical solution:

[0018] Two oblique guide rods are fixedly connected to the bottom side of the middle plate, a front mold insert is installed at the front end of the bottom side of the primary ejector lower plate, and a counter is installed at the left end of the bottom plate.

[0019] The utility model has the following beneficial effects:

[0020] 1. This utility model features an automatic ejector pin reset mechanism during mold opening and closing. After the ejector ejects the product, a return spring and a support spring ensure the ejector pin is quickly and accurately reset. This eliminates the need for manual intervention in ejector pin reset operations during continuous production, saving time and improving the efficiency of mold opening and closing and product production cycles, thereby increasing overall production efficiency.

[0021] 2. In this utility model, accurate return of the ejector pin is crucial to product quality. The return pin guides the ejector pin during its ejection and retraction, ensuring that the ejector plate retracts into place after the front and rear molds are closed. Combined with the synergistic effect of the return pin spring and the support pin spring, the ejector pin accurately returns to its initial position each time, thereby ensuring product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a three-dimensional schematic diagram of an opening and closing mold with an ejector pin automatic reset structure proposed by the present invention;

[0023] Figure 2 This is a schematic structural diagram of a support column for an opening and closing mold with an ejector pin automatic reset structure proposed by the present invention;

[0024] Figure 3This is a structural diagram of a garbage nail with an opening and closing mold and an automatic ejector pin reset structure proposed by the present invention;

[0025] Figure 4 This is a structural schematic diagram of a bottom plate of an opening and closing mold with an ejector pin automatic reset structure proposed by the present invention;

[0026] Figure 5 This is a structural schematic diagram of a sliding block for an opening and closing mold with an ejector pin automatic reset structure proposed by the present invention;

[0027] Figure 6 This is a structural schematic diagram of a bearing column of an opening and closing mold with an ejector pin automatic reset structure proposed by the present invention;

[0028] Figure 7 This is a structural schematic diagram of an ejector pin column for an opening and closing mold with an ejector pin automatic reset structure proposed by the present invention;

[0029] Figure 8 This is a structural schematic diagram of a guide rod for an opening and closing mold with an ejector pin automatic reset structure proposed by the present invention;

[0030] Figure 9 This is a structural schematic diagram of an inclined guide column pressure plate of an opening and closing mold with an automatic ejector pin reset structure proposed by the utility model.

[0031] Legend:

[0032] 1. Locating ring; 101. Upper plate; 102. Top plate; 103. Middle plate; 104. Bottom plate; 105. Lower plate; 2. Front mold mechanical plate; 3. Solenoid valve; 4. Hot runner plate; 5. Front mold plate; 6. Locking module; 7. Locking plate; 8. Mold foot; 9. Secondary ejector plate; 10. Secondary ejector lower plate; 11. Travel switch; 12. Rear mold plate; 13. Primary ejector lower plate; 14. Primary ejector plate; 15. Water transport; 16. Wiring slot; 17. Temperature sensor; 18. Guide sleeve; 19. Inclined guide rod; 20. Front mold core; 21. Rack scraper; 22. Front mold insert; 23. Backshovel; 24. Slider scraper ; 25. Guide rod; 26. Inclined guide column pressure plate; 27. Back mold core; 28. Inclined top plate; 29. ​​Back wear-resistant plate; 30. Bottom wear-resistant plate; 31. Limit block; 32. Counter; 33. Slider pressure strip; 34. Inclined top guide block; 35. Ejector column; 36. Inclined top seat; 37. Sliding block; 38. Slider insert; 39. Arc core insert; 40. Gear; 41. Bearing column; 42. Bearing protection sleeve; 43. Fixed plate; 44. Sliding rack; 45. Slider seat; 46. Return needle spring; 47. Middle support; 48. Support column; 49. Dustproof plate; 50. Return needle column; 51. Support needle spring; 52. Garbage nail. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] Reference Figure 1 、 Figure 8 and Figure 9 , the utility model provides an embodiment: the top side of the middle plate 103 is fixedly connected to the top plate 102, the left side of the top plate 102 is fixedly connected to the water transport 15, which is used for effective cooling of the mold to keep the mold temperature within a certain range, the top of the top plate 102 is fixedly connected to the upper plate 101, the middle of the upper plate 101 is fixedly connected to the positioning ring 1, so that the center of the injection nozzle and the center of the mold gate sleeve can be quickly connected, the front side of the positioning ring 1 is fixedly connected to the front mold mechanical plate 2, which is used to fix the front mold template 5 on the injection molding machine table when opening and closing the mold, and the front of the top plate 102 is fixedly connected to the heat exchanger 11. The flow channel plate 4 is used to place the hot runner. The solenoid valve 3 is installed on the right front end of the hot runner plate 4. If it controls the gas circuit, the opening and closing of the valve needle is controlled by controlling the inflow and outflow of the gas circuit. A temperature sensor 17 is installed in the middle of the front side of the hot runner plate 4 to obtain the temperature change of the hot film, thereby obtaining the real temperature and flow of the fluid. The wiring groove 16 is installed on the left front end of the hot runner plate 4 to connect the heating line and temperature sensing line of the hot runner system, and to connect with the connection line of the temperature control box through the temperature control box. The far side of the middle plate 103 is fixedly connected with the front template 5, and the product is formed together with the locking template 7;

[0035] The left front end of the middle plate 103 and the bottom plate 104 is equipped with a locking module 6. The movable and fixed molds are not allowed to open during the lifting, loading and unloading and transportation of the mold to protect the mold. The far side of the bottom plate 104 is fixedly connected with a locking plate 7, which is used to form the product together with the front plate 5. The left and right ends of the far side of the lower plate 105 are fixedly connected with mold feet 8, so that the mold can be placed flat to protect the ejector pins, inclined ejectors and other parts. The bottom end of the far side of the lower plate 105 is equipped with a travel switch 11 to control the ejection stroke. The front bottom end of the lower plate 105 is fixedly connected with the rear template 12 for opening and closing the mold on the injection molding machine table to fix the rear template 12 of the mold. The bottom side of the middle plate 103 is fixedly connected with two oblique guide rods 19, which drive the subsequent components to retreat when the mold is opened. The bottom front end of the lower plate 13 of the ejector pin is installed with a front mold insert 22. Due to the characteristics of the plastic material, the glue surface needs to use special metal.

[0036] The four corners of the bottom plate 104 are slidably connected with guide rods 25 to ensure that the mold can be moved and guide the mold stroke with precise positioning. The top side of multiple guide rods 25 is fixedly connected with the middle plate 10, and the front and rear ends of the bottom side of the middle plate 103 are fixedly connected with two guide sleeves 18 to protect the shaft from wear and make the solid lubrication feature permanent. The front mold core 20 is installed at the rear end of the bottom side of the middle plate 103, and the mold shape structure of the product's appearance and appearance surface. The left and right ends of the bottom side of the middle plate 103 are fixedly connected with rack shovels 21, which drive the sliding rack for transmission when the mold is opened. The left and right ends of the bottom side of the middle plate 103 are fixedly connected with slider shovels 24, which drive the slider to fully reset and drive the slider to retreat when the mold is opened. A backhoe 23 is installed in the middle of the bottom side of the middle plate 103 to prevent the slider from retreating when the injection pressure is large, press the guide sleeve 18, and prevent the guide sleeve 18 from sliding. The top of the middle plate 103 is equipped with multiple inclined guide column pressure plates 26.

[0037] Reference Figures 1 to 3 , a counter 32 is installed on the left end of the bottom plate 104 to accurately count, position and monitor the produced molds. The four corners of the lower plate 105 are fixedly connected with return pins 50, which play a guiding role when the ejector is ejected and retreated, and ensure that after the front and rear molds are closed, the ejector plate can be retreated into place due to the contact between the return pin and the front mold base. The outer sleeve of the return pin 50 is provided with a return pin spring 46 to ensure that the ejector is reset after ejecting the product. The outer side of multiple return pins 50 is slidably connected with a secondary ejector plate 9 to place the ejected parts and fix them for secondary ejection. The interior of the secondary ejector plate 9 is provided with multiple supporting pin springs 51 to straighten the ejector for reset. The interior of the secondary ejector plate 9 is slidably connected with multiple middle supports 47, which play a guiding role in the reciprocating motion of the ejector plate. 9 is internally slidably connected with a plurality of support columns 48, which bear and transmit the gravity load of the mold and guide these loads to the foundation. The bottom side of the secondary ejector plate 9 is fixedly connected with the secondary ejector lower plate 10, which supports the ejection parts and moves upward through the ejector rod to achieve the detachment of the product from the template. The external sliding connection of multiple return pin columns 50 is connected with the primary ejector lower plate 13 to support the ejection parts. The top side of the primary ejector lower plate 13 is fixedly connected with the primary ejector plate 14 to place the ejection parts and fix them. The rear side of the lower plate 105 is fixedly connected with the dustproof plate 49 to prevent dust from falling and affecting the balance of the mold. The bottom end of the primary ejector lower plate 13 is equipped with a plurality of garbage nails 52 to support the ejector plate. Due to its small area, it can prevent garbage from accumulating on it, making the ejector plate uneven or deformed.

[0038] Reference Figures 4 to 6The top side of the lower plate 105 is fixedly connected to the bottom plate 104, and the front and rear ends of the top of the secondary ejector plate 9 are fixedly connected to the ejection assembly of the ejection mold. The ejection assembly includes two inclined ejector seats 36, which complete the lateral movement of the subsequent components through their up and down movement. The outside of each two inclined ejector seats 36 is slidably connected to an inclined ejector guide block 34 to ensure stability and accuracy during the movement. The top side of the lower plate 105 is fixedly connected to the lower plate 105, and the front and rear ends of the lower plate 105 are respectively fixedly connected to the outside of the two inclined ejector guide blocks 34. The bottom side of the inclined ejector guide block 34 is fixedly connected to a plurality of ejector columns 35 to eject the product. The top side of each two ejector columns 35 is fixed with a rear mold core 27, the most precise part of the mold processing. The important dimensions and structures of the product are all in the rear mold core 27. The rear mold core 2 The top side of 7 is fixedly connected with an inclined top plate 28, which is undercut. Secondly, it can replace the ejector to eject the product. The top side of the bottom plate 104 is fixedly connected with multiple slider strips 33, which suppress and position the movement track of the slider seat 45 to prevent the slider seat 45 from offsetting, friction, etc. during use. The top sliding assembly of every two slider strips 33 has a slider seat 45. When the front and rear molds are opened horizontally, they move sideways to drive the slider to disengage from the product buckle position. The front end of the top side of the bottom plate 104 is fixedly connected with a limiting block 31 to limit the stroke of the sliding block. The top side of the bottom plate 104 is fixedly connected with multiple bottom wear-resistant plates 30 to reduce the wear of large parts and reduce replacement costs. The top side of the slider seat 45 is fixedly connected with a back wear-resistant plate 29 to reduce the wear of large parts and reduce replacement costs.

[0039] Reference Figures 6 and 7 The outside of the slider seat 45 is fixedly connected with a sliding block 37, which can slide perpendicular to the mold opening and closing direction or at a certain angle to the mold opening and closing direction. The bottom end of the sliding block 37 is fixedly connected with a fixed plate 43, which is used to fix parts such as the gear 40 and the sliding rack. The inner wall of the fixed plate 43 is fixedly connected with a bearing protection sleeve 42 to prevent the bearing from being contaminated and damaged by the external environment. The inner wall of the bearing protection sleeve 42 is rotatably connected with a bearing column 41, which is driven by the gear 40 to provide rotational motion for the arc core-pulling insert 39. The outer fixed portion of the bearing column 41 is fixed with a fixed plate 43 to fix the gear 40 and the sliding rack. It is fixedly connected with a gear 40 to transmit power, support equipment, and adjust speed and torque. The top side of the gear 40 is fixedly connected with an arc core-pulling insert 39, which can form a special structure of the product by moving in an arc trajectory to produce an undercut. The top side of the fixed plate 43 is slidably connected with a sliding rack 44 to provide rotational force for the gear 40. The outside of the sliding block 37 is fixedly connected with a slider insert 38 to facilitate processing and assembly. The outside of the arc core-pulling insert 39 is rotatably connected to the inner wall of the slider insert 38, and the sliding rack 44 and the gear 40 are meshed.

[0040] Working Principle: When the injection molding machine begins to open and close the mold, the front mold mechanical plate 2 firmly fixes the front mold plate 5 to the injection molding machine table, and the primary ejector plate 14 fixes the rear mold plate 12 to the injection molding machine table. The front mold core 20 in the front mold plate 5 and the rear mold core 27 in the rear mold plate 12 cooperate with each other to form the product. When the mold is opened, the inclined guide rod 19 plays a key role. It drives the slider seat 45 backward according to the designed angle and direction. At the same time, the slider shovel 24 drives the slider 37 backward to create space for the ejection and removal of the product. During this process, the inclined guide column pressure plate 26 tightly presses the inclined guide rod 19 to prevent it from sliding, the slider pressure strip 33 suppresses and positions the moving track of the slider seat 45, and the limit block 31 strictly limits the slider stroke to ensure the accurate operation of the slider-related structures. For the arc core-pulling structure, the gear 40 drives the bearing column 41, and the bearing column 41 provides the rotational force for the arc core-pulling insert 39. The fixed plate 43 is used to fix the gear 40 and the rack 44 and other parts. The rack 44 provides the rotational force for the gear 40 to ensure the molding of the special structure of the product.

[0041] When the product needs to be ejected after molding, the primary ejector lower plate 13 and the primary ejector plate 14, the secondary ejector lower plate 10 and the front template 5 will move upward under the lifting action of the ejector rod, and the ejector column 35 will move upward to eject the product from the mold. The travel switch 11 accurately controls the ejection stroke to prevent excessive ejection from causing damage to the product or mold.

[0042] After the product is ejected, the mold closes. The return pin 50 plays a crucial role here, guiding the ejector pin 35 during ejection and retraction. It also ensures that the ejector plate can be retracted into place after the front and rear molds are closed, thanks to the return pin 50's contact with the front mold base. The return pin spring 46 provides the primary return force, while the support spring 51 assists in restoring the ejector pin 35. Together, these two components enable the ejector pin 35 to quickly and accurately return to its initial position, preparing for the next product molding and ejection. Simultaneously, the center support 47 guides the ejector plate during its reciprocating motion, while the debris pin 52 supports the ejector plate. Its small footprint prevents debris from accumulating and causing unevenness or deformation. The dust shield 49 prevents dust from falling and affecting the mold's balance. The support pin 48 absorbs and transmits the mold's gravity load, channeling this load into the foundation. Through the synergistic effect of these structures, the mold can efficiently and accurately open and close, eject the product, and reposition the ejector pin, ensuring product quality and efficiency.

[0043] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An opening and closing mold with an automatic ejector pin reset structure, comprising a lower plate (105), characterized in that: The four corners of the lower plate (105) are fixedly connected with a return needle column (50), the outer sleeve of the return needle column (50) is provided with a return needle spring (46), the outer sides of the plurality of return needle columns (50) are slidably connected with a secondary ejector plate (9), the interior of the secondary ejector plate (9) is provided with a plurality of supporting needle springs (51), the interior of the secondary ejector plate (9) is slidably connected with a plurality of middle supports (47), the interior of the secondary ejector plate (9) is slidably connected with a plurality of support columns (48), and the bottom side of the secondary ejector plate (9) is fixedly connected with a secondary ejector plate (9). The ejector lower plate (10) is connected to a primary ejector lower plate (13) by sliding on the outside of the plurality of return pin columns (50), the top side of the primary ejector lower plate (13) is fixedly connected to a primary ejector plate (14), the rear side of the lower plate (105) is fixedly connected to a dustproof plate (49), the bottom end of the primary ejector lower plate (13) is installed with a plurality of garbage nails (52), the top side of the lower plate (105) is fixedly connected to a bottom plate (104), and the front and rear ends of the top of the secondary ejector plate (9) are fixedly connected to the ejection assembly of the ejection mold.

2. The opening and closing mold with an automatic ejector pin reset structure according to claim 1, characterized in that: The ejection assembly includes two inclined ejector seats (36), the outside of each two inclined ejector seats (36) is slidably connected to an inclined ejector guide block (34), the top side of the lower plate (105) is fixedly connected to the lower plate (105), the front and rear ends of the lower plate (105) are respectively fixedly connected to the outside of the two inclined ejector guide blocks (34), the bottom side of the inclined ejector guide block (34) is fixedly connected to a plurality of ejector pins (35), the top sides of each two ejector pins (35) are fixedly connected to a rear mold core (27), the top side of the rear mold core (27) is fixedly connected to an inclined ejector plate (28), the top side of the bottom plate (104) is fixedly connected to a plurality of slider strips (33), the top sliding assembly of each two slider strips (33) has a slider seat (45), the front end of the top side of the bottom plate (104) is fixedly connected to A limit block (31), the top side of the bottom plate (104) is fixedly connected to a plurality of bottom wear-resistant plates (30), the top side of the slider seat (45) is fixedly connected to a back wear-resistant plate (29), the outside of the slider seat (45) is fixedly connected to a sliding block (37), the bottom end of the sliding block (37) is fixedly connected to a fixed plate (43), the inner wall of the fixed plate (43) is fixedly connected to a bearing protection sleeve (42), the inner wall of the bearing protection sleeve (42) is rotatably connected to a bearing column (41), the outside of the bearing column (41) is fixedly connected to a gear (40), the top side of the gear (40) is fixedly connected to a circular arc core insert (39), the top side of the fixed plate (43) is slidably connected to a sliding rack (44), and the outside of the sliding block (37) is fixedly connected to a slider insert (38).

3. The opening and closing mold with an ejector pin automatic reset structure according to claim 2, characterized in that: The outer portion of the arc core-pulling insert (39) is rotatably connected to the inner wall of the slider insert (38), and the sliding rack (44) and the gear (40) are meshingly connected.

4. The opening and closing mold with an automatic ejector pin reset structure according to claim 1, characterized in that: The four corners of the bottom plate (104) are slidably connected to guide rods (25), the top sides of the plurality of guide rods (25) are fixedly connected to the middle plate (103), the front and rear ends of the bottom side of the middle plate (103) are fixedly connected to two guide sleeves (18), the rear end of the bottom side of the middle plate (103) is installed with a front mold core (20), the left and right ends of the bottom side of the middle plate (103) are fixedly connected to rack shovels (21), the left and right ends of the bottom side of the middle plate (103) are fixedly connected to slider shovels (24), a back shovel (23) is installed in the middle of the bottom side of the middle plate (103), and the top of the middle plate (103) is installed with a plurality of inclined guide column pressure plates (26).

5. The opening and closing mold with an ejector pin automatic reset structure according to claim 4, characterized in that: The top side of the middle plate (103) is fixedly connected to the top plate (102), the left side of the top plate (102) is fixedly connected to the water transport (15), the top of the top plate (102) is fixedly connected to the upper plate (101), the middle of the upper plate (101) is fixedly connected to the positioning ring (1), the front side of the positioning ring (1) is fixedly connected to the front mold mechanical plate (2), the front side of the top plate (102) is fixedly connected to the hot runner plate (4), and the front right end of the hot runner plate (4) is equipped with an electromagnetic The hot runner plate (4) is provided with a temperature sensor (17) at the middle of the front side, the hot runner plate (4) is provided with a wiring slot (16) at the left end of the front side, the middle plate (103) is fixedly connected to the front template (5) at the far side, the bottom plate (104) is fixedly connected to the locking template (7) at the far side, the left and right ends of the far side of the lower plate (105) are fixedly connected to the mold feet (8), and the bottom end of the far side of the lower plate (105) is fixedly connected to the travel switch (11).

6. The opening and closing mold with an ejector pin automatic reset structure according to claim 5, characterized in that: The left front ends of the middle plate (103) and the bottom plate (104) are installed with locking modules (6), and the front bottom end of the lower plate (105) is fixedly connected with a rear template (12).

7. The opening and closing mold with an automatic ejector pin reset structure according to claim 5, characterized in that: Two oblique guide rods (19) are fixedly connected to the bottom side of the middle plate (103), a front mold insert (22) is installed at the front end of the bottom side of the primary ejector lower plate (13), and a counter (32) is installed at the left end of the bottom plate (104).

Images