Sheet punching machine

Abstract

The utility model discloses a sheet punching machine, which belongs to the technical field of rubber product sampling and comprises a base, a guide rod, a top plate, a pressing plate, a guide sleeve, a driving rod and a gland, the guide rod is mounted at the upper end of the base, the top plate is fixedly connected to the guide rod, the pressing plate is slidably sleeved on the guide rod, and the pressing plate is used for applying pressure for cutting sheets to a lower cutting tool. The guide sleeve is connected to the pressing plate and slidably sleeves the outer side of the guide rod, the driving rod is provided with a threaded section and a ball head end, the threaded section is vertically arranged and is in threaded connection with the top plate, the ball head end is rotationally connected with the pressing plate, and the pressing cover is connected to the pressing plate and rotationally limits the ball head end on the pressing plate. The contact position of the driving rod and the pressing plate is designed to be of a spherical hinge structure, friction and abrasion at the connecting joint are reduced, the usability of the product is improved, and the service life of the joint is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of rubber product sampling, in particular to a sheet punching machine. Background Art

[0002] The punching machine is a device used by rubber factories and scientific research institutions to punch out standard rubber test pieces before tensile testing. It can also be used to punch out similar materials such as thin sheets and films made of plastic, leather, paper, or non-ferrous metals such as copper and aluminum.

[0003] The Chinese Patent Database has disclosed a patent titled "Rubber Experimental Punching Machine", application number: 202223382476.5, application date: 2022.12.16. This rubber experimental punching machine is provided with a bracket, which is vertically fixed on one side of the base, and a lifting sleeve is fixed on the inner side of the upper end of the bracket, and a vertical threaded through hole is machined in the lifting sleeve, and a threaded rod is screwed into the threaded through hole. A turntable is fixed above the threaded rod, and a cavity is opened axially inside the threaded rod, and an extrusion rod is inserted into the cavity, and an extrusion handle is fixed on the top of the extrusion rod, and a stamping plate is fixed at the lower end of the extrusion rod, and a cutting tool is connected below the stamping plate; a through hole perpendicular to the base is opened inside the turntable, threaded rod, stamping part, stamping plate and cutting tool, and the diameter of the extrusion rod is smaller than the diameter of the through hole and completely passes through the through hole. The extrusion pressing sheet is installed below the extrusion rod, and its diameter is slightly smaller than the diameter of the through hole of the cutting tool.

[0004] The shortcoming of the above patent solution is that the lower end of the screw only drives the stamping part to rise and fall with the threaded rod through a groove without rotating, that is, the lower end of the screw is in direct hard contact with the groove wall of the groove, and the resistance during the rotation of the screw is large, which makes the use of the stamping machine more laborious. At the same time, the large resistance will also lead to increased wear and tear, reducing the service life of the structure at this location. Utility Model Content

[0005] The embodiment of the present application provides a sheet punching machine to improve the usability of the device and reduce wear on the moving joints of the device.

[0006] The present application provides a film punching machine, comprising:

[0007] base;

[0008] A guide rod is mounted on the upper end of the base;

[0009] a top plate fixedly connected to the guide rod;

[0010] A pressure plate is slidably mounted on the guide rod, and is used to apply pressure to the cutting tool below to cut the material;

[0011] A guide sleeve connected to the pressure plate, wherein the guide sleeve is slidably sleeved on the outside of the guide rod;

[0012] A driving rod having a threaded section and a ball end, wherein the threaded section is vertically arranged and threadedly connected to the top plate, and the ball end is rotatably connected to the pressure plate;

[0013] The pressure cover is connected to the pressure plate and is used to limit the rotation of the ball head end on the pressure plate.

[0014] The beneficial effect of the above embodiment is that by designing the contact point between the drive rod and the pressure plate as a ball hinge structure, the friction and wear at the connection joint are reduced, thereby improving the usability of the product and the service life of the joint.

[0015] Based on the above embodiment, the embodiment of the present application can also be improved as follows:

[0016] In one embodiment of the present application, a locking member is further provided. The guide rod has a positioning surface at its upper end, and a positioning end extends upward from the positioning surface. The positioning end passes through a corresponding through-hole in the pressure plate and is then locked by the locking member. This step has the beneficial effect of accurately positioning the pressure plate using the positioning surface, and locking the pressure plate at the positioning end using the locking member, thereby facilitating assembly of the pressure plate.

[0017] In one embodiment of the present application, the invention further comprises: a threaded sleeve connected to the pressing plate, wherein the threaded section is threadedly connected to the threaded sleeve. The beneficial effect of this step is that the pressing plate can move up and down through the threaded connection structure.

[0018] In one embodiment of the present application, a limiting groove is defined between the pressure plate and the pressure cover, corresponding to the ball head end. The limiting groove has a first oil groove and a second oil groove defined in the wall thereof. Multiple first oil grooves are provided and spaced apart in sequence, and the second oil grooves connect to the first oil grooves. This step advantageously stores lubricating grease in the first and second oil grooves, thereby ensuring smooth rotation of the ball head end.

[0019] In one embodiment of the present application, the first seal is provided between the drive rod and the gland, and the second seal is provided between the gland and the pressure plate. Advantageous effects of this step include: the first and second seals improve the sealing effect of the lubricating oil at the ball head end.

[0020] In one embodiment of the present application, a pad is further included. The base has a groove, and the pad is placed in the groove. The pad is used to place the rubber sheet to be cut. The beneficial effect of this step is that the groove improves the stability of the pad's positioning and prevents damage to the knife edge.

[0021] In one embodiment of the present application, the apparatus further comprises: an upper cutting blade connected to the lower end surface of the pressing plate; a lower die sleeve connected to a through hole corresponding to the groove, the lower die sleeve having a blanking hole corresponding to the outer diameter of the upper cutting blade; and a receiving frame located below the blanking hole for collecting the cut sheets. The beneficial effect of this step is that the receiving frame can collect multiple sheets in a centralized manner, avoiding the problem of manually collecting each punched sheet one by one. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly describes the drawings required for the specific embodiments or the description of the prior art. Similar elements or parts are generally identified by similar reference numerals throughout the drawings. Elements or parts in the drawings are not necessarily drawn to scale.

[0023] Figure 1 This is a structural diagram of Example 1;

[0024] Figure 2 for Figure 1 A partial enlarged view of middle A;

[0025] Figure 3 This is a structural diagram of Example 2.

[0026] Among them, 1 base, 101 positioning hole, 102 groove, 2 guide rod, 201 positioning surface, 202 positioning end, 3 top plate, 4 pressure plate, 5 guide sleeve, 6 drive rod, 601 threaded segment, 602 ball head end, 603 polished rod segment, 7 pressure cover, 8 locking piece, 9 threaded sleeve, 10 limit groove, 1001 first oil groove, 1002 second oil groove, 11 first seal, 12 second seal, 13 gasket, 14 upper cutting knife, 15 lower die sleeve, 1501 blanking hole, 16 material connection frame. DETAILED DESCRIPTION

[0027] In this application, unless otherwise specified or limited, the terms used in this application should be understood broadly. For example, a connection can be a fixed connection, a detachable connection, or an integral connection. It can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of different terms in this utility model can be understood according to specific circumstances. The scope of the specific meanings should be limited to achieving the functions of this application.

[0028] In the description of this application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0029] Example 1

[0030] like Figure 1 、 2 As shown, a sheet punching machine includes: a base 1, a guide rod 2, a top plate 3, a pressure plate 4, a guide sleeve 5, a drive rod 6, and a pressure cover 7. The guide rod 2 is installed on the upper end of the base 1, the top plate 3 is fixedly connected to the guide rod 2, the pressure plate 4 is slidably sleeved on the guide rod 2, the pressure plate 4 is used to apply pressure to the cutting tool below to cut the sheet material, the guide sleeve 5 is connected to the pressure plate 4, the guide sleeve 5 is slidably sleeved on the outside of the guide rod 2, the drive rod 6 has a threaded section 601 and a ball head end 602, the threaded section 601 is vertically arranged and threadedly connected to the top plate 3, the ball head end 602 is rotatably connected to the pressure plate 4, and the pressure cover 7 is connected to the pressure plate 4 and rotationally limits the ball head end 602 on the pressure plate 4.

[0031] Specifically, such as Figure 1 As shown, there are two guide rods 2 and they are installed on the upper end of the base 1 in a left-right symmetrical structure. The base 1 is provided with positioning holes 101 corresponding to the guide rods 2. After the ends of the guide rods 2 are inserted into the positioning holes 101, they are threadedly connected with the bolts set on the base 1, so that the guide rods 2 can be stably positioned on the base 1.

[0032] Specifically, such as Figure 1 As shown, the punching machine further includes a locking member 8. The upper end of the guide rod 2 has a positioning surface 201, and the positioning surface 201 extends upward to form a positioning end 202. The positioning end 202 passes through a corresponding through-hole in the pressure plate 4 and is then locked by the locking member 8. The structure of accurately positioning the pressure plate 4 by the positioning surface 201 and locking the pressure plate 4 at the positioning end 202 by the locking member 8 facilitates assembly of the pressure plate 4.

[0033] Specifically, such as Figure 1 As shown, the positioning end 202 forms a concentric stepped shaft structure at the upper end of the guide rod 2 , and the locking member 8 is a cap nut, which is threadedly connected to the positioning end 202 and pressed against the upper surface of the top plate 3 .

[0034] Specifically, such as Figure 1As shown, the punching machine also includes a threaded sleeve 9, which is connected to the pressure plate 4. The threaded section 601 is threadedly connected to the threaded sleeve 9. A handwheel is installed on the upper end of the screw. By rotating the screw with the handwheel, the screw drives the pressure plate 4 to move up and down, guided by the thread limit between the screw and the threaded sleeve 9.

[0035] Specifically, such as Figure 2 As shown, a limiting groove 10 is defined between the pressure plate 4 and the pressure cover 7, corresponding to the ball end 602. The wall of the limiting groove 10 defines a first oil groove 1001 and a second oil groove 1002. Multiple first oil grooves 1001 are provided, spaced apart in sequence, and the second oil grooves 1002 connect the first oil grooves 1001. Lubricating grease is stored in the first and second oil grooves 1001, thereby ensuring smooth rotation of the ball end 602.

[0036] Specifically, such as Figure 2 As shown, the punching machine further includes: a first seal 11 and a second seal 12. The first seal 11 is disposed between the drive rod 6 and the gland 7, and the second seal 12 is disposed between the gland 7 and the pressure plate 4. Both the first seal 11 and the second seal 12 are sealing rings, and the sealing rings are inserted into corresponding sealing ring grooves provided in the gland 7. A polished rod section 603 is further disposed between the screw and the ball end 602. The polished rod section 603 is a smooth surface with no threads on the outer periphery, and the first seal is sleeved on the outer side of the polished rod section 603. The first seal 11 and the second seal 12 improve the sealing effect of the lubricating oil at the ball end 602.

[0037] Specifically, such as Figure 1 As shown, the punching machine also includes a pad 13. The base 1 has a groove 102, and the pad 13 is placed in the groove 102. The pad 13 is used to place the rubber sheet to be cut. The pad 13 is made of hardwood or rubber board. The pad 13 is provided with handles on both sides to facilitate manual movement of the pad 13. The groove 102 improves the positioning stability of the pad 13. The pad 13 prevents the blade from directly contacting the surface of the base 1, thereby increasing the service life of the cutting blade.

[0038] When this punching machine is in use, the rubber sheet is placed on the pad 13, the cutting edge of the cutting knife is placed downward on the surface of the rubber sheet, and the hand wheel is turned to make the pressure plate 4 move downward and squeeze the cutting knife. The cutting knife cuts the rubber sheet downward, cutting the rubber sheet into a sample in the shape of the cutting edge, and removing the sample to complete a material collection operation.

[0039] Example 2

[0040] Based on the first embodiment, Figure 3As shown, the punching machine also includes: an upper cutting knife 14, an upper cutting knife 15, and a material receiving frame 16. The upper cutting knife 14 is connected to the lower end surface of the pressure plate 4, and the upper cutting knife 15 is connected to the through hole corresponding to the groove 102. The upper cutting knife 15 matches the outer diameter of the upper cutting knife 14 and is provided with a blanking hole 1501. The material receiving frame 16 is located below the blanking hole 1501. A slot is provided on the front side of the base 1, and the material receiving frame 16 is slidably inserted into the slot. The material receiving frame 16 is used to collect the cut sheets.

[0041] The cutting blade used in Example 2 is a fixed cutting blade. This type of cutting blade is usually used to cut out multiple small circular samples. The material collection frame 16 is used for all-in-one collection. This avoids the problem of the operator having to pick up each sample one by one, which improves the operator's work convenience. In addition, the cutting process is a process in which the upper cutting blade 14 and the lower mold sleeve cooperate to cut the rubber strip. The cut samples generally do not get stuck in the upper cutting blade 14, and the cutting blade does not come into contact with hard objects, further increasing the service life of the cutting blade. The above is only an embodiment of the present invention. The specific structures and characteristics of the scheme are generally not described in detail here. Those skilled in the art are aware of all common technical knowledge in the field of the technology to which the utility model belongs before the filing date or priority date, have access to all existing technologies in the field, and have the ability to apply conventional experimental methods before that date. Those skilled in the art can improve and implement this scheme based on the guidance provided by this application and their own abilities. Some typical known structures or methods should not become obstacles for those skilled in the art to implement this application. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the utility model, and these should also be regarded as the scope of protection of the utility model. These will not affect the effect of the implementation of the utility model and the practicality of the patent.

Claims

1. A film punching machine, characterized in that: include: base; A guide rod is mounted on the upper end of the base; a top plate fixedly connected to the guide rod; A pressure plate is slidably mounted on the guide rod, and is used to apply pressure to the cutting tool below to cut the material; A guide sleeve connected to the pressure plate, wherein the guide sleeve is slidably sleeved on the outside of the guide rod; A driving rod having a threaded section and a ball end, wherein the threaded section is vertically arranged and threadedly connected to the top plate, and the ball end is rotatably connected to the pressure plate; The pressure cover is connected to the pressure plate and is used to limit the rotation of the ball head end on the pressure plate.

2. The sheet punching machine according to claim 1, characterized in that: Also includes: The locking piece has a positioning surface on the upper end of the guide rod, and a positioning end extends upward from the positioning surface. The positioning end passes through the corresponding through hole of the pressure plate and is locked by the locking piece.

3. The sheet punching machine according to claim 1, characterized in that: Also includes: The threaded sleeve is connected to the pressing plate, and the threaded section is threadedly connected to the threaded sleeve.

4. The sheet punching machine according to claim 1, characterized in that: A limiting groove is provided between the pressure plate and the pressure cover corresponding to the ball head end, and a first oil groove and a second oil groove are provided on the groove wall of the limiting groove. There are multiple first oil grooves which are arranged in sequence at intervals, and the second oil groove connects the first oil groove.

5. The sheet punching machine according to claim 1, characterized in that: Also includes: a first sealing member, disposed between the driving rod and the gland; The second sealing member is arranged between the pressure cover and the pressure plate.

6. The sheet punching machine according to claim 1, characterized in that: Also includes: The base is provided with a groove, the pad is placed in the groove, and the pad is used to place the rubber sheet to be cut.

7. The sheet punching machine according to claim 6, characterized in that: Also includes: An upper cutting knife connected to the lower end surface of the pressing plate; The lower die sleeve is connected to the through hole corresponding to the groove, and the lower die sleeve is provided with a blanking hole matching the outer diameter of the upper cutting knife; The material receiving frame is located below the blanking hole and is used to collect the cut sheets.

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