Injection mold ejection test bench

Abstract

The utility model discloses an injection mold ejection testboard which comprises a testboard base, a hydraulic telescopic cylinder is fixedly connected to the middle of the upper surface of the testboard base, and two limiting assemblies are fixedly connected to one side of the upper surface of the testboard base side by side at equal intervals. According to the scheme, the injection mold ejection test board is provided with the limiting assembly, before the test board is used, the second limiting frame in the limiting assembly is pulled upwards firstly, then the second limiting frame drives the limiting telescopic rod and the reset spring to move upwards, and after the limiting telescopic rod and the reset spring move to a certain distance, the limiting telescopic rod and the reset spring are reset. At the moment, one end of a connecting pipe penetrates through the middle position of a first pulley and a second pulley, then a second limiting frame is slowly loosened, and then a reset spring is combined with a limiting telescopic rod to restore the second limiting frame to the original position, so that the position of the penetrating connecting pipe is limited; the phenomenon that the connecting pipe is wound with other assemblies is avoided, and therefore the difficulty of later maintenance work is lowered.

Description

Technical Field

[0001] The utility model relates to the technical field of injection mold ejection test benches, and more specifically, to an injection mold ejection test bench. Background Art

[0002] At present, when performing ejector pin ejection tests on injection molds, the following operating methods are used: 1. Lifting and fixing the mold onto the injection molding machine, and using the ejector mechanism of the injection molding machine to perform ejector pin ejection tests; 2. Fixing the lower mold base, and using a crane to pull the ejector plate to perform ejector pin ejection tests; 3. Using other non-dedicated mechanical equipment to push the ejector plate to perform ejector pin ejection tests.

[0003] For example, CN206056632U discloses an injection mold ejection test bench. Its technical solution mainly includes a main platform, a hydraulic pump station, and a hydraulic ejector assembly. The hydraulic ejector assembly includes an ejector rod, an ejector rod fixing plate, a hydraulic support flange, and a hydraulic cylinder assembly. The main platform's tabletop is provided with an ejector rod through-hole. The hydraulic cylinder assembly's piston is connected to the hydraulic support flange, which is connected to the ejector rod fixing plate. The ejector rod is fixed to the ejector rod fixing plate. The hydraulic cylinder assembly drives the ejector rod up and down under the control of the hydraulic pump station, thereby completing the ejection and retraction operations. This is mainly achieved by controlling the electromagnetic control valve of the hydraulic device, which can achieve continuous and stepless forward and backward ejection test actions, making operation convenient and flexible. Seven detachable ejector rods are arranged according to the ejector rod position of the injection molding machine. The ejector rods can be added or removed according to the mold size and the standard ejection hole position. It has a wide range of applications and is easy to replace.

[0004] The above-mentioned injection mold ejection test bench still has certain shortcomings: since the injection mold ejection test bench does not have an anti-entanglement function, once entanglement occurs between pipes, it will increase the difficulty of subsequent maintenance work, thereby reducing the practicality of the device. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, an embodiment of the present utility model provides an injection mold ejection test bench to solve the problems existing in the prior art.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: an injection mold ejection test bench, comprising a test bench base, a hydraulic telescopic cylinder fixedly connected to the middle of the upper surface of the test bench base, two limit assemblies fixedly connected to one side of the upper surface of the test bench base in equal distances and side by side, the bottom end of the side wall of the hydraulic telescopic cylinder is connected to a connecting pipe through the limit assembly, the top of the hydraulic telescopic cylinder is fixedly connected to an ejection test plate, the top of the test bench base is fixedly connected to a plurality of support rods in a rectangular array, the top of the support rods is fixedly connected to a stabilizing block, the top of the stabilizing block is provided with a plurality of through holes in a rectangular array, and an ejector pin is provided inside the through hole.

[0007] Wherein, the bottom end of the ejector pin contacts the top end of the ejection test plate, and the cross-sectional area of ​​the ejection test plate is larger than the cross-sectional area of ​​the hydraulic telescopic cylinder.

[0008] Among them, the limiting assembly includes a stable connecting seat and a first limiting frame, the first limiting frame is fixedly connected to the middle of the upper surface of the stable connecting seat, the bottom end of the stable connecting seat is connected to one side of the upper surface of the test bench base, and the number of the stable connecting seats is two.

[0009] Two first bearings are symmetrically mounted on the surface of the first limiting frame along the center, a first pulley is fixedly sleeved inside the first bearing, and the top end of the first pulley is adapted to the surface of the connecting pipe.

[0010] The top of the first limiting frame is provided with a plurality of limiting holes in a rectangular array, the bottom of the limiting hole is detachably mounted with a limiting telescopic rod, and a return spring is fixedly sleeved on the surface of the limiting telescopic rod.

[0011] The top end of the reset spring is fixedly connected to a second limiting frame, and two second bearings are symmetrically inlaid on the surface of the second limiting frame along the center.

[0012] A second pulley is fixedly sleeved inside the second bearing, and the bottom end of the second pulley is adapted to the surface of the connecting pipe.

[0013] The beneficial effects of the above technical solution of the utility model are as follows:

[0014] 1. In the above solution, the injection mold ejection test bench is provided with a limit assembly. Before the test bench is used, the second limit frame inside the limit assembly is first pulled upward, and then the second limit frame drives the limit telescopic rod and the return spring to move upward. When it moves to a certain distance, one end of the connecting pipe is passed through the middle position of the first pulley and the second pulley, and then the second limit frame is slowly released. Then the return spring combines with the limit telescopic rod to restore the second limit frame to its original position, so that the position of the connecting pipe passing through is restricted to avoid the connection pipe from being entangled with other components, thereby reducing the difficulty of subsequent maintenance work;

[0015] 2. In the above scheme, the injection mold ejection test bench is provided with a first bearing, a first pulley, a second bearing and a second pulley. When the connecting tube needs to be pulled, because the surface of the connecting tube is respectively adapted to the top end of the first pulley and the bottom end of the second pulley, and the first pulley is connected to the first limit frame through the first bearing, and the second pulley is connected to the second limit frame through the second bearing, the original static friction method can be replaced by sliding friction to reduce the friction force on the connecting tube when pulling the connecting tube, thereby ensuring the quality of the connecting tube and reducing losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the overall structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the disassembly of the limit assembly of the utility model.

[0019] [reference numerals]

[0020] 1. Test bench base; 2. Hydraulic telescopic cylinder; 3. Limit assembly; 4. Connecting pipe; 5. Ejector test plate; 6. Support rod; 7. Stabilizing block; 8. Through hole; 9. Ejector pin; 31. Stable connecting seat; 32. First limit frame; 33. First bearing; 34. First pulley; 35. Limit hole; 36. Limit telescopic rod; 37. Return spring; 38. Second limit frame; 39. Second bearing; 30. Second pulley. DETAILED DESCRIPTION

[0021] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, a detailed description will be given below with reference to the accompanying drawings and specific embodiments.

[0022] Example 1:

[0023] See also Figure 1-3, an injection mold ejection test bench, including a test bench base 1, a hydraulic telescopic cylinder 2 is fixedly connected to the middle of the upper surface of the test bench base 1, two limit assemblies 3 are fixedly connected to one side of the upper surface of the test bench base 1 at equal distances, the bottom end of the side wall of the hydraulic telescopic cylinder 2 is connected to a connecting pipe 4 through the limit assembly 3, the top of the hydraulic telescopic cylinder 2 is fixedly connected to an ejection test plate 5, the top of the test bench base 1 is fixedly connected to a plurality of support rods 6 in a rectangular array, the top of the support rods 6 is fixedly connected to a stabilizing block 7, the top of the stabilizing block 7 is penetrated by a plurality of through holes 8 in a rectangular array, and an ejector pin 9 is arranged inside the through hole 8;

[0024] The bottom end of the ejector pin 9 contacts the top of the ejection test plate 5. The cross-sectional area of ​​the ejection test plate 5 is larger than the cross-sectional area of ​​the hydraulic telescopic cylinder 2. The limiting assembly 3 includes a stable connection seat 31 and a first limiting frame 32. The middle of the upper surface of the stable connection seat 31 is fixedly connected to the first limiting frame 32. The bottom end of the stable connection seat 31 is connected to one side of the upper surface of the test bench base 1. There are two stable connection seats 31. Two first bearings 33 are symmetrically inlaid on the surface of the first limiting frame 32 along the center. The first pulley 34 is fixedly sleeved inside the first bearing 33. The top of the first pulley 34 is adapted to the surface of the connecting tube 4, and a plurality of limiting holes 35 are opened on the top of the first limiting frame 32 in a rectangular array. The bottom end of the limiting hole 35 is detachably installed with a limiting telescopic rod 36, and a return spring 37 is fixedly sleeved on the surface of the limiting telescopic rod 36. The top of the return spring 37 is fixedly connected to the second limiting frame 38, and two second bearings 39 are symmetrically inlaid and installed on the surface of the second limiting frame 38 along the center. The second pulley 30 is fixedly sleeved inside the second bearing 39, and the bottom end of the second pulley 30 is adapted to the surface of the connecting tube 4.

[0025] Benefits: The provision of the connecting pipe 4 facilitates the delivery of oil to the interior of the hydraulic telescopic cylinder 2 , thereby facilitating the ejection test of the injection mold.

[0026] The working process of this utility model is as follows:

[0027] When the injection mold ejection test bench is in use, in order to avoid the connection pipe 4 from being entangled with other components, a limit assembly 3 is provided. Before the test bench is used, the second limit frame 38 inside the limit assembly 3 is first pulled upward, and then the second limit frame 38 will drive the limit telescopic rod 36 and the return spring 37 to move upward. When it moves to a certain distance, one end of the connecting pipe 4 is passed through the middle position of the first pulley 34 and the second pulley 30, and then the second limit frame 38 is slowly released. Then the return spring 37 will combine with the limit telescopic rod 36 to restore the second limit frame 38 to its original position, so that the position of the passing connecting pipe 4 is limited to avoid the connection pipe 4 from being entangled with other components, thereby reducing the difficulty of later maintenance work.

[0028] In the above scheme, in order to reduce the cost of use, the injection mold ejection test bench is provided with a first bearing 33, a first pulley 34, a second bearing 39 and a second pulley 30 when in use. When it is necessary to pull the connecting tube 4, because the surface of the connecting tube 4 is respectively adapted to the top end of the first pulley 34 and the bottom end of the second pulley 30, and the first pulley 34 is connected to the first limit frame 32 through the first bearing 33, and the second pulley 30 is connected to the second limit frame 38 through the second bearing 39, the original static friction method can be replaced by sliding friction to reduce the friction force on the connecting tube 4 when pulling the connecting tube 4, thereby ensuring the quality of the connecting tube 4 and reducing losses.

[0029] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense, and may refer to mechanical or electrical connections, internal communication between two components, or direct connection. "Up," "down," "left," and "right" are only used to indicate relative positional relationships. When the absolute positions of the objects being described change, the relative positional relationships may also change.

[0030] Secondly: The drawings of the embodiments disclosed in this utility model only involve structures related to the embodiments disclosed in this utility model. Other structures can refer to common designs. In the absence of conflicts, the same embodiment and different embodiments of the utility model can be combined with each other.

[0031] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. 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 injection mold ejection test bench, comprising a test bench base (1), characterized in that: A hydraulic telescopic cylinder (2) is fixedly connected to the middle of the upper surface of the test bench base (1); two limit assemblies (3) are fixedly connected to one side of the upper surface of the test bench base (1) at equal distances and in parallel; the bottom end of the side wall of the hydraulic telescopic cylinder (2) is connected to a connecting pipe (4) through the limit assemblies (3); the top end of the hydraulic telescopic cylinder (2) is fixedly connected to an ejection test plate (5); the top end of the test bench base (1) is fixedly connected to a plurality of support rods (6) in a rectangular array; the top end of the support rods (6) is fixedly connected to a stabilizing block (7); the top end of the stabilizing block (7) is provided with a plurality of through holes (8) in a rectangular array, and an ejector pin (9) is provided inside the through hole (8).

2. The injection mold ejection test bench according to claim 1, characterized in that: The bottom end of the ejector pin (9) contacts the top end of the ejection test plate (5), and the cross-sectional area of ​​the ejection test plate (5) is larger than the cross-sectional area of ​​the hydraulic telescopic cylinder (2).

3. The injection mold ejection test bench according to claim 1, characterized in that: The limiting assembly (3) comprises a stable connection seat (31) and a first limiting frame (32); the first limiting frame (32) is fixedly connected to the middle of the upper surface of the stable connection seat (31); the bottom end of the stable connection seat (31) is connected to one side of the upper surface of the test bench base (1); and there are two stable connection seats (31).

4. The injection mold ejection test bench according to claim 3, characterized in that: Two first bearings (33) are symmetrically mounted on the surface of the first limiting frame (32) along the center, a first pulley (34) is fixedly sleeved inside the first bearing (33), and the top end of the first pulley (34) is adapted to the surface of the connecting pipe (4).

5. The injection mold ejection test bench according to claim 3, characterized in that: The top of the first limiting frame (32) is provided with a plurality of limiting holes (35) in a rectangular array, and a limiting telescopic rod (36) is detachably mounted at the bottom end of each limiting hole (35), and a return spring (37) is fixedly sleeved on the surface of the limiting telescopic rod (36).

6. The injection mold ejection test bench according to claim 5, characterized in that: The top end of the return spring (37) is fixedly connected to a second limiting frame (38), and two second bearings (39) are symmetrically mounted on the surface of the second limiting frame (38) along the center.

7. The injection mold ejection test bench according to claim 6, characterized in that: A second pulley (30) is fixedly sleeved inside the second bearing (39), and the bottom end of the second pulley (30) is adapted to the surface of the connecting pipe (4).

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